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battery_compatibility:byd_b-box [2020-03-18 13:35] – guy_stewartbattery_compatibility:byd_b-box [2024-01-22 07:32] (current) – guy_stewart
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-====== Victron & BYD B-Box ===== +====== Victron & BYD ====== 
- +  
-The combination of Victron products with BYD Battery-Box LV lithium batteries has been tested and certified by the Victron and BYD R&D departments. This combination has extensive field experience and is actively supported by both companies. +^  Battery ^  Pro 2.5-10.0 ^  Pro 12.8 & 13.8 ^  L 3.5-14.0 ^ Premium LVL 15.4 ^ Premium LVS 4.0 ^ LV Flex 5 ^ 
- +|  Appearance |  {{ :battery_compatibility:byd-bbox2-5.jpg?nolink&100 |}}|  {{ :battery_compatibility:byd-bbox13-8.jpg?nolink&100 |}}|  {{ :battery_compatibility:byd-l3-5.jpg?nolink&100 |}}| {{:battery_compatibility:byd_premium_lvl.jpg?nolink&150|}}  |  {{:battery_compatibility:byd_lvs.jpg?nolink&80}}  | {{:battery_compatibility:byd_flex.jpg?100|}} | 
-The BYD B-Box includes an integrated Battery Management System (BMS) with each battery cell module, and a Battery Management Unit (BMU) that interfaces with the Victron [[venus-os:start|GX device]] and supports multiple battery modules.  +|  ESS |  yes|  yes|  yes|  yes|  yes|  yes| 
- +|  Grid Backup|  yes|  yes|  yes |   yes|  yes|  yes| 
- +|  Off-Grid|  yes|  yes|  no|  yes|  yes|  yes| 
- +|  Module capacity|  2.5 kWh |  13.8 kWh |  3.5 kWh|   15.36 kWh|  4.0 kWh|  5.0 kWh | 
-^  Battery ^  Pro 2.5-10.0 ^  Pro 12.8 & 13.8 ^  L 3.5-14.0 ^ Premium LVL 15.4 ^ +|  Module limit |  32|  32|  12|  64|  64|  64| 
-|  Appearance |  {{ :battery_compatibility:byd-bbox2-5.jpg?nolink&100 |}}|  {{ :battery_compatibility:byd-bbox13-8.jpg?nolink&100 |}}|  {{ :battery_compatibility:byd-l3-5.jpg?nolink&100 |}}| {{:battery_compatibility:byd_premium_lvl.jpg?nolink&150|}}  | +|  Max capacity|  80 kWh|  441.6 kWh|  42 kWh|  983 kWh|  256 kWh|  320 kWh|
-|  ESS |  yes|  yes|  yes|  yes| +
-|  Grid Backup|  yes|  yes|  yes |   yes| +
-|  Off-Grid|  yes|  yes|  no|  yes| +
-|  Module capacity|  2.5 kWh |  13.8 kWh |  3.5 kWh|   15.36 kWh| +
-|  Module limit |  32|  32|  12|  64| +
-|  Max capacity|  80 kWh|  441.6 kWh|  42 kWh|  983 kWh| +
- +
- +
 ===== 1. Product & System compatibility ===== ===== 1. Product & System compatibility =====
  
-=== 1.1 Offgrid, Backup and Energy Storage Systems are possible ===+=== 1.1 Offgrid, Backup and Energy Storage Systems (ESS) ===
 Victron + BYD B-Box can be used for the following system types: Victron + BYD B-Box can be used for the following system types:
  
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   * Off-grid   * Off-grid
  
 +__Special note for Off-Grid systems__
  
 +For Off-grid systems, its strongly recommend to make sure there is a minimum of DC-Coupled PV (= MPPT Solar Charger) in the system. Ie. not only AC-Coupled PV. Also, minimum battery configuration, and factor 1.0 are always important to adhere to, and even more so in case of Off-grid systems. Both BYD and Victron will be reluctant or even refusing to give support to systems that are not sized according to the minimum battery configuration table.
  
-=== 1.2 A GX device is required, eg Cerbo GX, Color Control GX (CCGX), Venus GX (VGX), etc === +=== 1.2 A GX device is required, eg Cerbo GX, etc === 
  
-It is essential to use the BMS-Can (or CAN-bus) connection of a [[venus-os:start|GX device]] with the BYD batteries for the keep-alive signal, communication of charge and discharge limits, error codes and state of charge. +It is essential to use the BMS-Can (or CAN-bus) connection of a [[venus-os:start|GX device]] with the BYD batteries for the keep-alive signal, communication of charge and discharge limits, error codes and state of charge.  This is set to 500 kbit/s.
  
-When used with B-Box Pro series batteries, the minimum supported firmware version for the [[venus-os:start|GX device]] is v2.42. When used with B-Box Premium LV series, the minimum supported GX device firmware version is v2.52. It is highly recommended to use the latest firmware version on all connected devices, including CCGX/VGX, Inverter/Charger and MPPTs. There are regular updates to improve performance and reliability. +When used with B-Box Pro series batteries, the minimum supported firmware version for the [[venus-os:start|GX device]] is v2.42. When used with B-Box Premium LV series, the minimum supported GX device firmware version is v2.52. It is recommended to use the latest firmware version on new installations and when trouble shooting issues.
  
-=== 1.3 All 48V Multis, MultiPlusses, MultiGrids and Quattros are compatible ===+=== 1.3 All 48V Multis, MultiPlusses, MultiGrids, Quattros and RS models are compatible ===
  
 The minimum supported firmware version is 469. Updating to the latest firmware is recommended for new installations, and troubleshooting issues. The minimum supported firmware version is 469. Updating to the latest firmware is recommended for new installations, and troubleshooting issues.
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 In off-grid systems, the control functions of the BYD Battery Management System (BMS) are built into the latest version of the [[venus-os:start|GX device]]. In off-grid systems, the control functions of the BYD Battery Management System (BMS) are built into the latest version of the [[venus-os:start|GX device]].
  
 +=== 1.4 Solar Charger compatibility ===
  
 +All 48V BlueSolar and SmartSolar VE.Direct MPPT Chargers are compatible (*).
  
 +Some of our Solar Chargers feature a VE.Direct communication port, some feature a VE.Can communication port, and some feature both. Both of these types of communication ports can be used to connect the Solar charger to the GX Device. Such connection is mandatory, because it is used to regulate charge currents and voltages.
  
-=== 1.4 All 48V BlueSolar and SmartSolar VE.Direct MPPT Chargers are compatible === +When planning to use the VE.Can communications port to connect the Solar Charger(s), make sure to select a GX Device that has sufficient CAN-Bus ports. The Color Control GX has only one such port, its VE.Can port, and is therefor not suitable. All other GX Devices can be used, since they have two ports. One can then be used to connect the BYD battery, and the other to connect the Solar Charger.
- +
-For proper operation, the B-Box battery needs to be able to control the charge current of the solar MPPTs. +
-It is recommended to use the MPPTs with VE.Direct port with BYD batteries.  +
- +
-__MPPTs with a VE.Direct port__ +
- +
-MPPTs are controlled via the [[venus-os:start|GX device]]. Make sure the [[venus-os:start|GX device]] runs v2.42 (or v2.52 for LVL) or later, and the MPPTs to 1.46 or the latest available version.  +
- +
-The MPPT requires connection to the [[venus-os:start|GX device]] to regulate charge currents as the batteries require (due to temperature, etc) +
-To test operation, try disconnecting the [[venus-os:start|GX device]] from the MPPT. After a time-out, the MPPT will stop charging and flash an error code on its LEDs. The error code is [[https://www.victronenergy.com/live/mppt-error-codes#err_67_-_no_bms|error #67: no BMS]].  +
- +
-__MPPTs with a VE.Can port and VE.Direct port__ +
- +
-Firmware should be at least version 1.04. +
- +
-When using VE.Can MPPT's, it is recommended to use the a [[venus-os:start|GX device]] with a BMS-Can interface as well as the VE.Can interface (eg Cerbo GX, or Venus GX), instead of the CCGX. This allows communication between the MPPTs, BYD and the GX Device.+
  
-Please note that older model VE.Can MPPTs (without VE.direct and with built in screen) are no longer supported with BYD managed batteries for new installations. Legacy systems that were historically installed with this configuration using the allow to charge contacts are not required to make any changes. +(*) with exception of the models “BlueSolar MPPT 150/70 CAN-bus” and “BlueSolar MPPT 150/85 CAN-bus” which are end-of-life since 2019. Legacy systems, historically installed with this configuration using the allow to charge contacts are not required to make any changes, see the legacy chapter below for details.
  
 === 1.5 Battery compatibility === === 1.5 Battery compatibility ===
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 | B-BOX L 3.5-14.0     | | B-BOX L 3.5-14.0     |
 | B-BOX Premium LVL 15.4     | | B-BOX Premium LVL 15.4     |
 +| B-BOX Premium LVS 4.0     |
 +| B-BOX LV Flex 5.0      |
  
 BYD also releases firmware update for their BMU and BMS.  BYD also releases firmware update for their BMU and BMS. 
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 Minimum BYD firmware version for B-Box Pro: BMU_V2_V4-13_15-Mar-2017. On-screen, or via Remote Console on the [[venus-os:start|GX device]], this version is named v4.13. Batteries with older firmware versions can be updated. Please contact BYD for more information. Minimum BYD firmware version for B-Box Pro: BMU_V2_V4-13_15-Mar-2017. On-screen, or via Remote Console on the [[venus-os:start|GX device]], this version is named v4.13. Batteries with older firmware versions can be updated. Please contact BYD for more information.
  
-BYD Premium LVL batteries firmware should be no less than V1.4, and the BMS firmware should be no less than V1.3. If necessary, this can be updated automatically via the ethernet port on the BMU when connected to the internet.+BYD B-Box Premium batteries firmware should be no less than V1.4, and the BMS firmware should be no less than V1.3. If necessary, this can be updated automatically via the ethernet port on the BMU when connected to the internet.
  
 +Victron is not compatible with the BYD HVS/HVM range of high-voltage batteries. 
 ===== 2. Minimum Battery Sizing ===== ===== 2. Minimum Battery Sizing =====
  
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 === Battery Modules Required - Pro 2.5 === === Battery Modules Required - Pro 2.5 ===
- 
  
 |Phases|  Single Phase|  Three Phase|  Single Phase|  Three Phase| |Phases|  Single Phase|  Three Phase|  Single Phase|  Three Phase|
 |  Inverter/Charger |  Self-consumption |  Self-consumption |  Off-grid |  Off-grid | |  Inverter/Charger |  Self-consumption |  Self-consumption |  Off-grid |  Off-grid |
-|  Multiplus 48/3000/35|  1|  3|  2|  6| +|  MultiPlus & MultiPlus II & MP-II GX 48/3000/35|  1|  3|  2|  6| 
-|  Multiplus 48/5000/70|  1|  3|  3|  9|+|  MultiPlus, MultiPlus II, MP-II GX, & Quattro-II 48/5000/70|  1|  3|  3|  9| 
 +|  Inverter RS & Multi RS 48/6000|  1|  -|  4|  -|
 |  Quattro 48/5000/70-100/100|  1|  3|  3|  9| |  Quattro 48/5000/70-100/100|  1|  3|  3|  9|
 |  Quattro 48/8000/110-100/100|  1|  4|  5|  15| |  Quattro 48/8000/110-100/100|  1|  4|  5|  15|
-|  Quattro 48/10000/140- 100/100|  1|  5|  6|  18| +|  Quattro & MultiPlus-II 48/10000/140-100/100|  1|  5|  6|  18| 
-|  Quattro 48/15000/200- 100/100|  1|  6|  9|  27| +|  Quattro & MultiPlus-II 48/15000/200-100/100|  1|  6|  9|  27| 
-|  EasySolar 48/3000/35-50 MPPT150/70|  1|  3|  2|  6| +|  EasySolar & EasySolar-II 48/3000/35-50 MPPT|  1|  3|  2|  6| 
-|  EasySolar 48/5000/70-100 MPPT150/100|  1|  3|  3|  9|+|  EasySolar 48/5000/70-100 MPPT|  1|  3|  3|  9|
  
  
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 |Phases|  Single Phase|  Three Phase|  Single Phase|  Three Phase| |Phases|  Single Phase|  Three Phase|  Single Phase|  Three Phase|
 |  Inverter/Charger |  Self-consumption |  Self-consumption |  Off-grid |  Off-grid | |  Inverter/Charger |  Self-consumption |  Self-consumption |  Off-grid |  Off-grid |
-|  Multiplus 48/3000/35|  1|  1|  1|  2| +|  MultiPlus & MultiPlus II & MP-II GX 48/3000/35|  1|  1|  1|  2| 
-|  Multiplus 48/5000/70|  1|  1|  1|  3|+|  MultiPlus, MultiPlus II, MP-II GX, & Quattro-II 48/5000/70|  1|  1|  1|  3| 
 +|  Inverter RS & Multi RS 48/6000|  1|  -|  1|  -|
 |  Quattro 48/5000/70-100/100|  1|  1|  1|  3| |  Quattro 48/5000/70-100/100|  1|  1|  1|  3|
 |  Quattro 48/8000/110-100/100|  1|  2|  2|  5| |  Quattro 48/8000/110-100/100|  1|  2|  2|  5|
-|  Quattro 48/10000/140- 100/100|  1|  2|  2|  6| +|  Quattro & MultiPlus-II 48/10000/140-100/100|  1|  2|  2|  6| 
-|  Quattro 48/15000/200- 100/100|  1|  3|  3|  7| +|  Quattro & MultiPlus-II 48/15000/200-100/100|  1|  3|  3|  7| 
-|  EasySolar 48/3000/35-50 MPPT150/70|  1|  1|  1|  2|+|  EasySolar & EasySolar-II 48/3000/35-50 MPPT150/70|  1|  1|  1|  2|
 |  EasySolar 48/5000/70-100 MPPT150/100|  1|  1|  1|  3| |  EasySolar 48/5000/70-100 MPPT150/100|  1|  1|  1|  3|
  
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 |Phases|  Single Phase|  Three Phase|  Single Phase|  Three Phase| |Phases|  Single Phase|  Three Phase|  Single Phase|  Three Phase|
 |  Inverter/Charger |  Self-consumption |  Self-consumption |  Grid-backup |  Grid-backup | |  Inverter/Charger |  Self-consumption |  Self-consumption |  Grid-backup |  Grid-backup |
-|  Multiplus 48/3000/35|  1|  2|  2|  6| +|  MultiPlus & MultiPlus II & MP-II GX 48/3000/35|  1|  2|  2|  6| 
-|  Multiplus 48/5000/70|  1|  2|  4|  10|+|  MultiPlus, MultiPlus II, MP-II GX, & Quattro-II 48/5000/70|  1|  2|  4|  10| 
 +|  Inverter RS & Multi RS 48/6000|  1|  -|  4|  -|
 |  Quattro 48/5000/70-100/100|  1|  2|  4|  10| |  Quattro 48/5000/70-100/100|  1|  2|  4|  10|
 |  Quattro 48/8000/110-100/100|  1|  3|  5|  x| |  Quattro 48/8000/110-100/100|  1|  3|  5|  x|
-|  Quattro 48/10000/140- 100/100|  1|  4|  7|  x| +|  Quattro & MultiPlus-II 48/10000/140-100/100|  1|  4|  7|  x| 
-|  Quattro 48/15000/200- 100/100|  1|  5|  10|  x| +|  Quattro & MultiPlus-II 48/15000/200-100/100|  1|  5|  10|  x| 
-|  EasySolar 48/3000/35-50 MPPT150/70|  1|  2|  2|  6|+|  EasySolar & EasySolar-II 48/3000/35-50 MPPT150/70|  1|  2|  2|  6|
 |  EasySolar 48/5000/70-100 MPPT150/100|  1|  2|  4|  10| |  EasySolar 48/5000/70-100 MPPT150/100|  1|  2|  4|  10|
  
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 |Phases|  Single Phase|  Three Phase|  Single Phase|  Three Phase| |Phases|  Single Phase|  Three Phase|  Single Phase|  Three Phase|
 |  Inverter/Charger |  On-Grid \ with Full Backup |  On-Grid \ with inrush |  Off-grid |  Off-grid \ with inrush | |  Inverter/Charger |  On-Grid \ with Full Backup |  On-Grid \ with inrush |  Off-grid |  Off-grid \ with inrush |
-|  Multiplus 48/3000/35|  1|  1 \ 2|  1|  1 \ 2| +|  MultiPlus & MultiPlus II & MP-II GX 48/3000/35|  1|  1 \ 2|  1|  1 \ 2| 
-|  Multiplus 48/5000/70|  1|  2 \ 2|  1|  2|+|  MultiPlus, MultiPlus II, MP-II GX, & Quattro-II 48/5000/70|  1|  2 \ 2|  1|  2| 
 +|  Inverter RS & Multi RS 48/6000|  1|  -|  1|  -|
 |  Quattro 48/5000/70-100/100|  1|  2 \ 2|  1|  2| |  Quattro 48/5000/70-100/100|  1|  2 \ 2|  1|  2|
 |  Quattro 48/8000/110-100/100|  1|  2 \ 3|  1|  2| |  Quattro 48/8000/110-100/100|  1|  2 \ 3|  1|  2|
-|  Quattro 48/10000/140- 100/100|  1|  3 \ 4|  1|  3 \ 4| +|  Quattro & MultiPlus-II 48/10000/140-100/100|  1|  3 \ 4|  1|  3 \ 4| 
-|  Quattro 48/15000/200- 100/100|  1 \ 2|  4 \ 6|  2|  4 \ 6| +|  Quattro & MultiPlus-II 48/15000/200-100/100|  1 \ 2|  4 \ 6|  2|  4 \ 6| 
-|  EasySolar 48/3000/35-50 MPPT150/70|  1|  1|  1|  1|+|  EasySolar & EasySolar-II 48/3000/35-50 MPPT150/70|  1|  1|  1|  1|
 |  EasySolar 48/5000/70-100 MPPT150/100|  1|  2 \ 2|  1|  2| |  EasySolar 48/5000/70-100 MPPT150/100|  1|  2 \ 2|  1|  2|
-  
-**"With inrush"** - this is the advice for systems that have load profiles that use the full surge capacity of the inverter, eg Multiplus 48/5000/70 providing 10 kW for 5 seconds to start an electric motor.  
  
-The specification for these minimum battery sizes was obtained from [[http://alpspower.com.au/wp-content/uploads/2018/05/Battery-Box-LV-Res-2.510.0-Mini-configuration-list.pdf|BYD’s 2018 minimum specification guide.]] There is an [[http://alpspower.com.au/wp-content/uploads/2017/10/B-BOX-LV-Pro-13.8-Minimum-configuration-list.pdf|additional guide here]] for the 12.8 and 13.8 models, and [[https://secureservercdn.net/198.71.233.41/x4m.ee6.myftpupload.com/wp-content/uploads/2020/03/BYD-Battery-Box-Premium-LVL-Minimum-Configuration-List-V1.0.pdf|here for the Premium LVL 15.4 model.]]  
  
 +=== Battery Modules Required - Premium LVS 4.0 ===
  
 +|Phases|          Single Phase| Three Phase| Single Phase|   Three Phase|
 +|  Inverter/Charger |  On-Grid |  On-Grid |  Off-grid |  Off-grid \ with inrush |
 +|  MultiPlus & MultiPlus II & MP-II GX 48/3000/35|  1|  2|  1|  4 \ 6|
 +|    MultiPlus, MultiPlus II, MP-II GX, & Quattro-II 48/5000/70|  1|  2|  2|  6 \ 8|
 +|  Inverter RS & Multi RS 48/6000|  1|  -|  3|  -|
 +|             Quattro 48/5000/70-100/100|  1|  2|  2|  6 \ 8|
 +|            Quattro 48/8000/110-100/100|  1|  2|  4|  8 \ 12|
 +|          Quattro & MultiPlus-II 48/10000/140-100/100|  1|  4|  5|  12 \ 16|
 +|          Quattro & MultiPlus-II 48/15000/200-100/100|  1|  4|  7*|  16 \ 24|
 +|     EasySolar & EasySolar-II 48/3000/35-50 MPPT150/70|  1|  2|  1|  4 \ 4|
 +|   EasySolar 48/5000/70-100 MPPT150/100|  1|  2|  2|  8 \ 8|
  
 +* Note for 7 units two stacks are required. One stack is 4 battery modules, the other is 3.
  
-===== 3. CANBus Wiring =====+=== Battery Modules Required - Premium LV Flex 5.0 ===
  
-Use the //VE.Can to CAN-bus BMS type A Cable//, part number ASS030710018. Plug the side which is labeled Battery BMS into the BYD BMS. Plug the side labeled Victron VE.Can into the [[venus-os:start|GX device]].+|Phases|          Single Phase| Three Phase| Single Phase|   Three Phase| 
 +|  Inverter/Charger |  On-Grid |  On-Grid |  Off-grid |  Off-grid | 
 +|  MultiPlus 48/500 & 48/800|  1|  1|  1|  1| 
 +|  MultiPlus 48/1200 & 48/1600|  1|  2|  1|  2| 
 +|  MultiPlus 48/2000|  1|  2|  1|  3| 
 +|  MultiPlus & MultiPlus II & MP-II GX 48/3000/35|  1|  3|  2|  4| 
 +|    MultiPlus, MultiPlus II, MP-II GX, & Quattro-II 48/5000/70|  2|  5|  3|  6| 
 +|  Inverter RS & Multi RS 48/6000|  2|  -|  3|  -| 
 +|             Quattro 48/5000/70-100/100|  2|  5|  3|  6| 
 +|            Quattro 48/8000/110-100/100|  3|  8|  4|  10| 
 +|          Quattro & MultiPlus-II 48/10000/140-100/100|  4|  10|  5|  13| 
 +|          Quattro & MultiPlus-II 48/15000/200-100/100|  5|  14|  6|  16| 
 +|     EasySolar & EasySolar-II 48/3000/35-50 MPPT150/70|  1|  3|  2|  4| 
 +|   EasySolar 48/5000/70-100 MPPT150/100|  2|  5|  2|  6|
  
-Then, plug a [[https://www.victronenergy.com/accessories/ve-can-rj45-terminator|VE.Can terminator]] in the other VE.Can socket on the [[venus-os:start|GX device]]. Two VE.Can terminators are included with the package of the [[venus-os:start|GX device]] as an accessory, only one is used. Keep the other one as a spare. 
  
-More information about the cable can be found in [[battery_compatibility:can-bus_bms-cable|its manual]].+**"With inrush"** - this is the advice for systems that have load profiles that use the full surge capacity of the inverter, eg MultiPlus 48/5000/70 providing 10 kW for 5 seconds to start an electric motor. 
  
-Without properly connecting this cable, the battery will not show up on the display of the [[venus-os:start|GX device]]. The battery will also turn itself off after several minutes.+The specification for these minimum battery sizes was obtained from [[http://alpspower.com.au/wp-content/uploads/2018/05/Battery-Box-LV-Res-2.510.0-Mini-configuration-list.pdf|BYD’s 2018 minimum specification guide.]] There is an [[http://alpspower.com.au/wp-content/uploads/2017/10/B-BOX-LV-Pro-13.8-Minimum-configuration-list.pdf|additional guide here]] for the 12.8 and 13.8 models, and [[https://secureservercdn.net/198.71.233.41/x4m.ee6.myftpupload.com/wp-content/uploads/2020/03/BYD-Battery-Box-Premium-LVL-Minimum-Configuration-List-V1.0.pdf|here for the Premium LVL 15.4 model.]]
  
-It is important to ensure this connection and display of the battery on the [[venus-os:start|GX device]] display before attempting firmware updates or settings changes on other devices if they depend on the power supply from the battery. Without this connection, the battery may turn off unexpectedly. If a reliable DC power supply is required, you can temporarily disconnect the individual BYD battery cells inside their cabinet from the internal Battery Management Unit (BMU). It is the BMU that signals the battery cells to shut down if the signal from the [[venus-os:start|GX device]] has not been received. This is a temporary measure, DO NOT attempt to operate the battery cells normally without connection to the BMU. +===== 3. CAN-Bus wiring between the battery and GX Device =====
  
 +Use the //VE.Can to CAN-bus BMS type A Cable//, part number ASS030710018. Plug the side which is labeled Battery BMS into the BYD BMS. Plug the side labeled Victron VE.Can into the [[venus-os:start|GX device]].
  
 +Then, plug a [[https://www.victronenergy.com/accessories/ve-can-rj45-terminator|VE.Can terminator]] in the other VE.Can socket on the [[venus-os:start|GX device]]. Two VE.Can terminators are included with the package of the [[venus-os:start|GX device]] as an accessory, only one is used. Keep the other one as a spare.
  
 +More information about the cable can be found in [[battery_compatibility:can-bus_bms-cable|its manual]].
  
-=== 3.1 Legacy Systems using Allow-to-charge and allow-to-discharge contacts === +Without properly connecting this cable, the battery will not show up on the display of the [[venus-os:start|GX device]]. The battery will also turn itself off after several minutes.
- +
-This section is for Legacy systems that have VE.Can MPPTs without a VE.Direct port, and BYD B-Box Pro batteries. These systems were configured using Allow-to-charge contacts. This configuration is not supported with Premium LVL, or other BYD batteries. +
- +
-If you have an existing system that is configured using the Allow-to-charge contacts, and it is operating correctly, you do not need to make any changes.  +
- +
-The BlueSolar MPPTs with a VE.Can (and no VE.Direct port) port have a dedicated Remote On/Off input. It needs to be connected to battery positive to enable the charger. Leaving the Remote On/Off input floating or pulling it to ground will disable the charger. +
- +
-B-Box relays: +
- +
-  * Relay T1-T2: closed if allowed to discharge +
-  * Relay T4-T5: closed if allowed to charge +
- +
-{{:battery_compatibility:byd_bmu.jpg?nolink&400|}}+
  
 +It is important to ensure this connection and display of the battery on the [[venus-os:start|GX device]] display before attempting firmware updates or settings changes on other devices if they depend on the power supply from the battery. Without this connection, the battery may turn off unexpectedly. It is possible to bypass this automatic shutdown, and other protections temporarily by disconnecting the individual BYD battery cells inside their cabinet from the internal Battery Management Unit (BMU). It is the BMU that signals the battery cells to shut down if the signal from the [[venus-os:start|GX device]] has not been received. This is a temporary measure for use only when troubleshooting to resume normal operation, DO NOT attempt to operate the battery cells normally without connection to the BMU. 
  
 ===== 4. VEConfigure settings ===== ===== 4. VEConfigure settings =====
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 | Charge curve           | Fixed   |  | Charge curve           | Fixed   | 
 | Absorption voltage     | 55.2 V  | | Absorption voltage     | 55.2 V  |
-| Float voltage          | 55 V  | +| Absorption voltage off-grid systems  (2)| 56.5 V  | 
 +| Float voltage (1)         | 55 V  | 
 | Absorption time        | 1 Hr    | | Absorption time        | 1 Hr    |
  
-Note: make sure to double check the float voltage after completing Assistants, and if necessary set it back to 55 V.+Notes: 
 + 
 +  - make sure to double check the float voltage after completing Assistants, and if necessary set it back to 55 V. 
 +  - Setting the Absorption voltage for off-grid systems to 56.5V is to ensure the PV Inverter Assistant works properly. Setting this voltage to 56.5V, ie a bit higher than the default 55.2V, prevents the Frequency shift algorithm to lock at 52.7 or 53 Hz, and thereby disabling AC-Coupled PV Inverters. The setting has no effect on the actual charge voltage as used by the inverter and other components in the system, since these are directed directly by the battery via DVCC.
  
 === 4.3 Inverter Settings === === 4.3 Inverter Settings ===
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-===== 5. GX device Configuration =====+===== 5. GX device configuration =====
  
 On the [[venus-os:start|GX device]], go to Settings, System setup: On the [[venus-os:start|GX device]], go to Settings, System setup:
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 |Shared Voltage Sense |OFF|  |Shared Voltage Sense |OFF| 
  
-If you have a VE.Can MPPT, it is advised to use the Venus GX in place of the CCGX. 
  
-* Select the //CAN-bus BMS (500 kbit/s)// CAN-profile in the CCGX. Menu path: //Settings -> Services -> CAN-profile//. +* Select the //CAN-bus BMS (500 kbit/s)// CAN-profile in the GX device. Menu path: //Settings -> Services -> CAN-profile//. 
  
   * After properly wiring and setting up, the B-Box will be visible as a battery in the device list:   * After properly wiring and setting up, the B-Box will be visible as a battery in the device list:
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 Note these limits have been adjusted higher by BYD during firmware updates, so the charge and discharge current limit figure may appear slightly higher. Note these limits have been adjusted higher by BYD during firmware updates, so the charge and discharge current limit figure may appear slightly higher.
- 
-=== Color Control GX Configuration === 
-   
-The CCGX only has one available VE.Can port. It is not possible to connect both CAN products such as VE.Can MPPT (250 kbit/s) and an B-Box battery CAN-bus (500 kbit/s) together on the CCGX. As the BYD Battery MUST be connected, you will need to use the port for that. This will mean no data is collected from the VE.Can MPPT, nor can the CCGX control it. This means you are required to use the "Allow to Charge" wire configuration for the MPPT.    
  
 === GX Device with multiple CAN-bus port configuration === === GX Device with multiple CAN-bus port configuration ===
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 The CAN-bus connections are galvanically isolated at the BYD BMU. There is no issues using the non-isolated connection of the VGX.  The CAN-bus connections are galvanically isolated at the BYD BMU. There is no issues using the non-isolated connection of the VGX. 
  
-===== 6. VE-Direct MPPT Settings =====+=== Color Control GX Configuration - Not Recommended === 
 +   
 +The CCGX only has one available VE.Can interface. It is not possible to connect both CAN products such as VE.Can MPPT (250 kbit/s) and an B-Box battery BMS-Can CAN-bus (500 kbit/s) together on the CCGX. As the BYD Battery MUST be connected, you will need to use the port for that. This will mean no data is collected from the VE.Can MPPT, nor can the CCGX control it. This means you are required to use the "Allow to Charge" wire configuration for the MPPT.   
  
-In normal operation the MPPT charge characteristics are governed by the [[venus-os:start|GX device]] connected to the BYD battery. +For this reason it is recommended to use the Cerbo GX instead.  
  
-This section presumes familiarity with [[victronconnect:start|VictronConnect]]+===== 6. Solar Charging =====
  
-The settings below are a precautionary measure. +==== 6.1 Victron MPPT charger settings ====
  
-^MPPT Parameter ^ Setting ^ +Victron MPPT charge characteristics are automatically configured & governed by the [[venus-os:start|GX device]]. The settings below are a precautionary measure only: 
-|Battery voltage.     |48V|+ 
 +^ MPPT Parameter ^ Setting ^ 
 +|Battery voltage     |48V|
 |Absorption voltage   |56.5V| |Absorption voltage   |56.5V|
  
 +Use [[victronconnect:start|VictronConnect]] for Solar Charger configuration.
 +
 +==== 6.2 Self-Startup from Low voltage shutdown modes ====
 +
 +In a correctly configured system, the inverter will shut itself down before the batteries enter a self protective shut down state. 
 +
 +Therefore it is essential that there is also either a generator or DC MPPT charge controller for overall system stability. If your system is charged only with an AC-coupled PV inverter, this may prevent the AC-coupled PV inverter from starting up to recharge the batteries. 
 +
 +Even a single 100/20 48V MPPT charger unit with 2 x 60 cell solar panels would be sufficient to add this self correcting mechanism able to maintain the DC bus voltage and improve longterm system reliability considerably from accidental deep discharge and subsequent shut down.  
 ===== 7. Example Wiring Diagram ===== ===== 7. Example Wiring Diagram =====
  
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 === Step 0. If the Inverter/Charger or GX device does not switch on === === Step 0. If the Inverter/Charger or GX device does not switch on ===
  
-As a safety precaution, the inverter/charger will not switch on if the [[venus-os:start|GX device]] is not on. If you are unable to start the system due to a total system blackout / battery shutdown due to low voltage, you may need to disconnect the VE.BUS connection cable between the inverter/charger and [[venus-os:start|GX device]]. +When the grid is connected there are two software controls to sustain voltage. The Minimum SOC (while grid is connected) set in the GX device, and the sustain voltage (set in the ESS assistant). 
 + 
 +If the grid fails and no AC supply is available, in this deeply discharged state, and the battery has set the Discharge Current Limit (DCL) to 0A, then the inverter will turn off in a software off state. 
 + 
 +The GX device will remain on, as there is still DC voltage provided by the batteries for a while. 
 +Note in this state an AC PV inverter will not produce any power, and will not start up, as it requires the inverter to create the sine wave to synchronise. 
 + 
 +If the AC grid or generator, or DC MPPT is connected, then the battery will begin to charge and then the inverter will start itself again automatically, also resuming charge from an AC PV inverter. 
 +If instead the battery becomes completely discharged the battery will further protect itself by not just sending the 0A discharge limit, but also disconnecting DC voltage from the battery terminals (via internal MOSFETS). As there is no DC voltage available on the terminals any more the GX device will also shut down, and the inverter will also then be hard off (not just software off). 
 + 
 +If you then reconnect a DC charge source, or AC input supply (grid or generator), after approximately 2 minutes the inverter will start up again, power the DC bus, powering up the GX device, and then powering up the battery, and the system will recover.
  
-You can then start the inverter/charger from an external charge source such as a generator or grid connection. Once the inverter/charger has started, it should supply power to the DC terminals and this should start the [[venus-os:start|GX device]] and BYD battery again. You will need to then reconnect the VE.Bus Communications cable back to the inverter/charger and [[venus-os:start|GX device]]. 
  
 === Step 1. Check that the BYD battery is visible on the GX device list === === Step 1. Check that the BYD battery is visible on the GX device list ===
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   * Could be a temporary issue, that corrects self automatically after a short while (matter of minutes).   * Could be a temporary issue, that corrects self automatically after a short while (matter of minutes).
   * Could be an external issue, unacceptable voltage or current.   * Could be an external issue, unacceptable voltage or current.
 +
 ===== 9. Step by Step Installation Guide ===== ===== 9. Step by Step Installation Guide =====
  
 There is a step by step installation video that demonstrates the essential connections and programming that is required for installation of a BYD battery in a Victron system. It is accessible via the [[https://professional.victronenergy.com/api/accounts/e-learning/?service=https%3A//www.easy-lms.com/victronenergy/login|E-Learning section in Victron Professional]], and a [[https://professional.victronenergy.com/accounts/sign-up/|free Victron Professional Installer Account]] is required.  There is a step by step installation video that demonstrates the essential connections and programming that is required for installation of a BYD battery in a Victron system. It is accessible via the [[https://professional.victronenergy.com/api/accounts/e-learning/?service=https%3A//www.easy-lms.com/victronenergy/login|E-Learning section in Victron Professional]], and a [[https://professional.victronenergy.com/accounts/sign-up/|free Victron Professional Installer Account]] is required. 
- 
- 
  
 [[https://professional.victronenergy.com/api/accounts/e-learning/?service=https%3A//www.easy-lms.com/victronenergy/login|{{:battery_compatibility:byd_installation.jpg?400|}}]] [[https://professional.victronenergy.com/api/accounts/e-learning/?service=https%3A//www.easy-lms.com/victronenergy/login|{{:battery_compatibility:byd_installation.jpg?400|}}]]
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 This written manual should be assumed to be the more accurate and up-to-date, if there are any discrepancies between the video and the written manual,  This written manual should be assumed to be the more accurate and up-to-date, if there are any discrepancies between the video and the written manual, 
  
-A user contributed [[battery_compatibility:byd_b-box-steps|step by step installation guide is available here.]] Please be aware that this guide is no longer current. It should not be considered a best practice, but provides further detail and insights from an actual installation.  +==== Introduction to the new BYD Premium range LVL and LVS  ==== 
-===== 10. Known Issues =====+ 
 +[[https://www.easy-lms.com/course-47826|{{:battery_compatibility:byd_lvl_video.jpg?400|}}]] 
 + 
 +==== Introduction to the new BYD Flex 5.0  ==== 
 + 
 +BYD recorded a webinar introducing their Flex 5.0 battery - it is available to watch here - https://www.youtube.com/watch?v=wRVdlmGh3Fc 
 + 
 +Victron presented more information that was specific to our integration as part of that webinar - available here - https://youtu.be/wRVdlmGh3Fc?t=1065 
 + 
 +==== User contributed installation guide ====  
 + 
 +A user contributed [[battery_compatibility:byd_b-box-steps|step by step installation guide is available here.]] Please be aware that this guide is no longer current. It recommends legacy practices and should not be considered current best practice, but provides further detail and insights from an actual installation. 
 +  
 +===== 10. Known Issues with B-Box Pro models ===== 
 + 
 +The following information only applies to the B-Box Pro models, and not to the B-Box Premium models.
  
-=== 10.1 Inaccurate State of Charge (SoC) Readings ===+=== 10.1 Inaccurate State of Charge (SoC) Readings with B-Box Pro models ===
  
 Each BYD battery module has it’s own BMS. This BMS reports it’s battery information to the BMU which is connected to the [[venus-os:start|GX device]] and reported to the user and the system.  Each BYD battery module has it’s own BMS. This BMS reports it’s battery information to the BMU which is connected to the [[venus-os:start|GX device]] and reported to the user and the system. 
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 There has been a firmware revision for the BYD battery modules and BMU that improves cold weather performance slightly. This manual will be updated with the new (slightly improved) specifications when stock supplied with the new firmware has had sufficient time to enter the market. Contact your BYD distributor for further information about this. There has been a firmware revision for the BYD battery modules and BMU that improves cold weather performance slightly. This manual will be updated with the new (slightly improved) specifications when stock supplied with the new firmware has had sufficient time to enter the market. Contact your BYD distributor for further information about this.
  
-=== 10.4 Self-Startup from Low voltage shutdown modes === 
  
-In a correctly configured system, the inverter will shut itself down before the batteries enter a self protective shut down state. +===== 11. Legacy systems using allow-to-charge and allow-to-discharge contacts ===== 
 + 
 +For proper operation, the B-Box battery needs to be able to control the charge current of the solar MPPTs. Which for all modern models is arranged via the VE.Can and VE.Direct digital communication protocols. The very first two BlueSolar Chargers made by Victron, the “BlueSolar MPPT 150/70 CAN-bus” and “BlueSolar MPPT 150/85 CAN-bus” models, do no support such control, and were therefor controlled with a wire: the allow-to-charge wire. 
 + 
 +The purpose of this chapter is to serve as reference guide for legacy systems using those two solar charger models. If you have an existing system that is configured using the Allow-to-charge contacts, and it is operating correctly, you do not need to make any changes.  
 + 
 +Note that these charges cannot be used with the BYD Premium LV batteries, since they do not feature the required free contacts. 
 + 
 +=== Legacy system wiring details === 
 + 
 +The Remote On/Off input of the two mentioned solar charger models is used to signal that they can or cannot charge the battery. It needs to be connected to battery positive to enable the charger. Leaving the Remote On/Off input floating or pulling it to ground will disable the charger. 
 + 
 +B-Box relays: 
 + 
 +  * Relay T1-T2: closed if allowed to discharge 
 +  * Relay T4-T5: closed if allowed to charge 
 + 
 +Picture showing these connections on the BYD B-Box battery: 
 + 
 +{{:battery_compatibility:byd_bmu.jpg?nolink&400|}} 
 + 
 +===== 12. High voltage warning or alarm shown on battery status ===== 
 + 
 +The 'high voltage' warning or alarm is not unusual on new batteries that are not yet balanced. While less common, It can also occur on systems that have been installed and previously working reliably as well.   
 + 
 +It is easiest to confirm this diagnosis in VRM in the Advanced Widget for the Battery Monitor as it logs this data over time.  
 +{{:battery_compatibility:vrm-enable_maxmin.jpg?600|}} 
 + 
 +It is also possible to see an instantaneous cell max/min on the GX device in the Menu -> BYD Battery -> Details 
 + 
 + 
 +In a normal well balanced battery installation, you can see the minimum and maximum cell voltages rising together through most of the charge cycle (within 10%), and power spikes are absorbed by both min and max cells when the battery is full. Once the battery is at 100%, the max cell voltage should fall back closely in line with the minimum cell voltage.  
 + 
 +{{:battery_compatibility:byd-balance_cells.jpg?600|}} 
 + 
 +In an imbalanced battery installation, you can see the minimum cell voltage does not rise as much (if at all), compared to the maximum cell voltage. Once the battery is at 100%, the maximum cell voltage does not fall back closely in line with the minimum cell voltage. Any power spikes are disproportionately affecting the high voltage cells, generating alarms, and putting the system at risk of shutting the battery down.  
 + 
 +{{:battery_compatibility:byd-imbalanced_cells.jpg?600|}} 
 + 
 +To help the batteries balance quickly, keep the batteries fully charged and the system voltage stable until the errors go away. In an ESS system, set it to 'keep batteries charged', in an off-grid system the fastest way is to either charge / balance the battery before installation, or to fully charge with a generator if not enough solar is available to keep the batteries fully charged. 
 + 
 +If you are unable to maintain the target voltage to balance the batteries without the 'high voltage' alarm occurring, you may need to temporarily enable and set the “Limit managed battery charge voltage” setting in the DVCC menu of the GX device. Reduce this voltage as necessary until the alarm stops. After sufficient time to balance the batteries, try increasing this value until it can be disabled again for normal operation. 
 + 
 +{{:battery_compatibility:byd-highvoltage.jpg?400|}} 
 + 
 +Another method that may also help is limiting the maximum charge current that is provided by the solar chargers. In some cases this can allow a better charge without needing to reduce the overall battery charge voltage as much (or at all), by reducing the high current spikes. Charge current limits can be applied at a system level in DVCC - however they will be much more effective and quicker to react to changing conditions if applied at an individual unit level within the MPPT settings in VictronConnect: 
 + 
 +{{:battery_compatibility:vc_set_max_current.jpg?600|}} 
 + 
 +Start with a severe current limit (i.e 50%) and then see if that resolves the issue (while still making sure the system receives a full charge). If the issue is still not resolved, continue to restrict further.  
 +Once the alarms stop, then increase Max Charge Current back to the point where the issue reappears, and then reduce it again by 10%. Note this may also be seasonally affected (if solar window is limited with the changing sun angle). 
 + 
 +All of these values can be monitored, and the settings adjustments can be performed remotely with an internet connected system via VRM and VictronConnect Remote. 
 + 
 +If it is not possible to raise the voltage or current limits over time, and eventually disable the manual overrides without the alarms reoccurring;
  
-If your system is supplied only with AC-bus solar charging, this may prevent the solar inverter from starting up to recharge the batteries. Therefore it is strongly recommended that there is also either a generator or DC MPPT charge controller to provide DC bus power to bring the inverter back online to allow normal recharging to resume. +1: If you have 2 or more batteries in your system, you can try shutting down the system once it is as close to fully charged as possible, and then physically connecting the batteries in smaller groups (or even individually) so that balancing can occur on each individual battery without it being masked by the others connected in parallel. It may help you to see the indicator lights on the battery (if available on that model) to find which battery might be out of balance with the others. You can also monitor this in VRM and the GX device using the min/max cell voltage reporting. 
  
-Even a single 100/20 48V MPPT charger unit with 2 x 60 cell solar panels would be sufficient to add this self correcting mechanism able to maintain the DC bus voltage and improve longterm system reliability considerably from accidental deep discharge and subsequent shut down. +2: Contact your BYD dealer for further assistance (they can provide additional software to see even more detailed individual cell level data), or assist with other potential solutions.
  
-===== 11. Further Information =====+===== 13. Further Information =====
  
 For information about where to buy or find suitably qualified installers, visit the [[https://www.victronenergy.com/where-to-buy|Where to Buy Page.]] For information about where to buy or find suitably qualified installers, visit the [[https://www.victronenergy.com/where-to-buy|Where to Buy Page.]]
battery_compatibility/byd_b-box.1584534927.txt.gz · Last modified: 2020-03-18 13:35 by guy_stewart
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