battery_compatibility:byd_b-box
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battery_compatibility:byd_b-box [2019-02-18 14:08] – guy_stewart | battery_compatibility:byd_b-box [2020-03-18 17:34] – [5. GX device configuration] mvader | ||
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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. | 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. | ||
- | 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: | + | 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: |
- | + | ||
- | + | ||
- | + | ||
- | ^ Battery ^ Pro 2.5-10.0 ^ Pro 12.8 & 13.8 ^ L 3.5-14.0 ^ | + | |
- | | Appearance | {{ : | + | |
- | | ESS | yes| yes| yes| | + | |
- | | Grid Backup| | + | |
- | | Off-Grid| | + | |
- | | Module capacity| | + | |
- | | Module limit | 32| 32| 12| | + | |
- | | Max capacity| | + | |
+ | ^ Battery ^ Pro 2.5-10.0 ^ Pro 12.8 & 13.8 ^ L 3.5-14.0 ^ Premium LVL 15.4 ^ | ||
+ | | Appearance | {{ : | ||
+ | | ESS | yes| yes| yes| yes| | ||
+ | | Grid Backup| | ||
+ | | Off-Grid| | ||
+ | | Module capacity| | ||
+ | | Module limit | 32| 32| 12| 64| | ||
+ | | Max capacity| | ||
===== 1. Product & System compatibility ===== | ===== 1. Product & System compatibility ===== | ||
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* Off-grid | * Off-grid | ||
+ | === 1.2 A GX device is required, eg Cerbo GX, Color Control GX (CCGX), Venus GX (VGX), etc === | ||
+ | It is essential to use the BMS-Can (or CAN-bus) connection of a [[venus-os: | ||
- | === 1.2 A Venus-device is required, either Color Control GX (CCGX) or Venus GX (VGX) === | + | When used with B-Box Pro series |
- | + | ||
- | It is essential to use the CAN-bus connection of the CCGX or VGX with the BYD batteries for the keep-alive signal, communication of charge and discharge limits, error codes and state of charge. | + | |
- | + | ||
- | When used with B-Box batteries, the minimum | + | |
=== 1.3 All 48V Multis, MultiPlusses, | === 1.3 All 48V Multis, MultiPlusses, | ||
- | The minimum firmware version is 422. Though updating | + | The minimum |
- | These inverter/ | + | These inverter/ |
- | In grid connected systems, advanced control functions are configurable in the ESS settings on the [[venus-os: | + | In grid connected systems, advanced control functions are configurable in the ESS settings on the [[venus-os: |
- | In off-grid systems, the control functions of the BYD Battery Management System (BMS) are built into the latest version of the [[venus-os: | + | In off-grid systems, the control functions of the BYD Battery Management System (BMS) are built into the latest version of the [[venus-os: |
+ | === 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 MPPT Chargers are compatible === | + | When planning |
- | + | ||
- | For proper operation, the B-Box battery needs to be able to control the charge current of the solar MPPTs. | + | |
- | It is recommended | + | |
- | + | ||
- | __MPPTs with a VE.Direct port__ | + | |
- | + | ||
- | MPPTs are controlled via the [[venus-os: | + | |
- | + | ||
- | The MPPT requires connection to the [[venus-os: | + | |
- | To test operation, try disconnecting the [[venus-os: | + | |
- | + | ||
- | __MPPTs with a VE.Can | + | |
- | + | ||
- | Firmware should be at least version 2.05. | + | |
- | + | ||
- | When using VE.Can MPPT's, it is recommended to use the Venus GX (VGX), instead of the CCGX. The VGX has two CAN-bus interfaces available and allows communication between | + | |
+ | (*) 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 Compact | | B-BOX Compact | ||
| B-BOX L 3.5-14.0 | | B-BOX L 3.5-14.0 | ||
+ | | B-BOX Premium LVL 15.4 | | ||
- | BYD also releases firmware update for their BMU and BMS. BMU Firmware versions earlier than V4-13 are not compatible with Victron equipment and can cause the battery to not be detected. | + | BYD also releases firmware update for their BMU and BMS. |
- | + | ||
- | Minimum BYD firmware version: BMU_V2_V4-13_15-Mar-2017. | + | |
- | On-screen, or via Remote Console on the [[venus-os: | + | B-Box Pro BMU Firmware versions earlier than V4-13 are not compatible with Victron equipment and can cause the battery to not be detected. |
- | 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: |
+ | 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. | ||
===== 2. Minimum Battery Sizing ===== | ===== 2. Minimum Battery Sizing ===== | ||
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The following information is provided by BYD, it is reproduced here for your convenience and should always be confirmed with the latest BYD manuals and specifications. | The following information is provided by BYD, it is reproduced here for your convenience and should always be confirmed with the latest BYD manuals and specifications. | ||
- | Each battery | + | Each B-Box Pro 2.5 battery |
- | The following charge rates are managed automatically by the BYD BMU and [[venus-os: | + | The following charge rates are managed automatically by the BYD BMU and [[venus-os: |
Using very large solar arrays with battery banks that are too small can exceed the limits of the batteries ability to charge and possibly lead to the BMU triggering over-current alarms. | Using very large solar arrays with battery banks that are too small can exceed the limits of the batteries ability to charge and possibly lead to the BMU triggering over-current alarms. | ||
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=== Battery Modules Required - Pro 2.5 === | === Battery Modules Required - Pro 2.5 === | ||
- | |||
|Phases| | |Phases| | ||
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+ | === Battery Modules Required - Premium LVL 15.4 === | ||
+ | |Phases| | ||
+ | | Inverter/ | ||
+ | | Multiplus 48/ | ||
+ | | Multiplus 48/ | ||
+ | | Quattro 48/ | ||
+ | | Quattro 48/ | ||
+ | | Quattro 48/ | ||
+ | | Quattro 48/ | ||
+ | | EasySolar 48/ | ||
+ | | EasySolar 48/ | ||
+ | |||
+ | **" | ||
- | The specification for these minimum battery sizes was obtained from [[http:// | + | The specification for these minimum battery sizes was obtained from [[http:// |
+ | ===== 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: | ||
- | ===== 3. CANBus Wiring ===== | + | Then, plug a [[https:// |
- | + | ||
- | 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: | + | |
- | + | ||
- | Then, plug a [[https:// | + | |
More information about the cable can be found in [[battery_compatibility: | More information about the cable can be found in [[battery_compatibility: | ||
- | Without properly connecting this cable, the battery will not show up on the display of the [[venus-os: | + | Without properly connecting this cable, the battery will not show up on the display of the [[venus-os: |
- | + | ||
- | It is important to ensure this connection and display of the battery on the [[venus-os: | + | |
- | + | ||
- | + | ||
- | + | ||
- | + | ||
- | === 3.1 Wiring of the Allow-to-charge and allow-to-discharge contacts === | + | |
- | + | ||
- | Using the latest firmware on all devices, the BYD allow to charge contacts are only required when using VE.Can MPPT' | + | |
- | 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 MPPTs with a VE.Can 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 | + | |
- | + | ||
- | {{: | + | |
+ | It is important to ensure this connection and display of the battery on the [[venus-os: | ||
===== 4. VEConfigure settings ===== | ===== 4. VEConfigure settings ===== | ||
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=== 4.2 Charge parameters === | === 4.2 Charge parameters === | ||
- | In normal operation, the charge parameters are controlled by the BYD BMU and communicated through the system by the [[venus-os: | + | In normal operation, the charge parameters are controlled by the BYD BMU and communicated through the system by the [[venus-os: |
=== Charger tab === | === Charger tab === | ||
Line 237: | Line 210: | ||
- | ===== 5. Venus-device | + | ===== 5. GX device |
- | On the [[venus-os: | + | On the [[venus-os: |
^Venus Settings -> System Setup Parameter ^ Value ^ | ^Venus Settings -> System Setup Parameter ^ Value ^ | ||
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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 CCGX. Menu path: //Settings -> Services -> CAN-profile// | ||
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{{ : | {{ : | ||
- | This parameters page is also a good place to check that all batteries are connected and working properly. In normal working conditions, for the 2.5 model, the current limit is 35A per cell. For example, 140A charge current limit ( 140 / 35 = 4 ) means there are 4 BYD battery cells connected. | + | This parameters page is also a good place to check that all batteries are connected and working properly. In normal working conditions, for the 2.5 model, the charge |
- | Note this figure has been increased in recent | + | |
+ | Note these limits have been adjusted higher by BYD during | ||
=== Color Control GX Configuration === | === Color Control GX Configuration === | ||
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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" | 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" | ||
- | === Venus GX Configuration | + | === GX Device with multiple CAN-bus port configuration |
- | The VGX has two CAN-bus interfaces available. The VE.Can MPPT will remain connected to the VE.Can port, while the BYD CAN-bus cable should use the specific CAN-bus connections (H, L, GND). | + | With GX devices that have two CAN-bus interfaces available |
- | This allows data from the MPPT and BYD battery simultaneously. You will only need to connect the Allow-to-charge wires if using the VE.Can MPPT and VGX. | + | |
- | The CAN-bus connections are galvanically isolated at the BYD BMU. There is no issues using the non-isolated connection of the VGX. | + | This allows data from the MPPT and BYD battery simultaneously. |
- | ===== 6. VE-Direct MPPT Settings ===== | + | The CAN-bus connections |
- | + | ||
- | In normal operation the MPPT charge characteristics | + | |
- | This section presumes familiarity with [[victronconnect: | + | ===== 6. Solar Charger configuration ===== |
- | The settings below are a precautionary measure. | + | The MPPT charge characteristics are automatically configured & governed by the [[venus-os: |
- | ^MPPT Parameter ^ Setting ^ | + | ^ MPPT Parameter ^ Setting ^ |
- | |Battery voltage. |48V| | + | |Battery voltage |
|Absorption voltage | |Absorption voltage | ||
+ | Use [[victronconnect: | ||
===== 7. Example Wiring Diagram ===== | ===== 7. Example Wiring Diagram ===== | ||
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If the system is not operating correctly, go through these steps. | If the system is not operating correctly, go through these steps. | ||
- | === Step 0. If the Inverter/ | + | === Step 0. If the Inverter/ |
- | As a safety precaution, the inverter/ | + | As a safety precaution, the inverter/ |
- | You can then start the inverter/ | + | You can then start the inverter/ |
- | === Step 1. Check that the BYD battery is visible on the Venus-device list === | + | === Step 1. Check that the BYD battery is visible on the GX device list === |
{{: | {{: | ||
Line 301: | Line 272: | ||
If its not visible, check: | If its not visible, check: | ||
- | * [[venus-os: | + | * [[venus-os: |
* BYD firmware version (see requirement above) | * BYD firmware version (see requirement above) | ||
* CAN-bus communication cabling between BYD and Victron system. Make sure that it is in the right way around. If the special cable is plugged in reversed it won't work. | * CAN-bus communication cabling between BYD and Victron system. Make sure that it is in the right way around. If the special cable is plugged in reversed it won't work. | ||
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=== Step 2. Check that the BYD battery is ready for use === | === Step 2. Check that the BYD battery is ready for use === | ||
- | Check the Max Charge Voltage parameter. This voltage parameter is sent, together with the other three parameters, | + | Check the Max Charge Voltage parameter. This voltage parameter is sent, together with the other three parameters, |
When ready for use, the Max Charge Voltage will read 56.5 V. In case there is an error in the BYD system (wiring, addressing, or other), it will be 42 V: | When ready for use, the Max Charge Voltage will read 56.5 V. In case there is an error in the BYD system (wiring, addressing, or other), it will be 42 V: | ||
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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 Guide ===== | ||
- | If you need further details, a user contributed [[battery_compatibility: | + | ===== 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:// | ||
+ | |||
+ | [[https:// | ||
+ | |||
+ | 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: | ||
+ | |||
===== 10. Known Issues ===== | ===== 10. Known Issues ===== | ||
=== 10.1 Inaccurate State of Charge (SoC) Readings === | === 10.1 Inaccurate State of Charge (SoC) Readings === | ||
- | 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: | + | 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: |
Each BYD module BMS has a threshold current of 1A (~50W) before it begins to report. For multiple modules, this is additive. So 4 modules could supply a 180W load and report it as 0 W. | Each BYD module BMS has a threshold current of 1A (~50W) before it begins to report. For multiple modules, this is additive. So 4 modules could supply a 180W load and report it as 0 W. | ||
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=== Work-arounds === | === Work-arounds === | ||
- | If precise state of charge is important, it is possible to install a Victron BMV shunt, and program the [[venus-os: | + | If precise state of charge is important, it is possible to install a Victron BMV shunt, and program the [[venus-os: |
The limitations of this method are if cells are added, removed or shut down, the BMV will continue to report SoC based on the total Ah of storage set. | The limitations of this method are if cells are added, removed or shut down, the BMV will continue to report SoC based on the total Ah of storage set. | ||
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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. | 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. | ||
- | ===== 11. Further Information ===== | + | ===== 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: | ||
+ | |||
+ | {{: | ||
+ | |||
+ | |||
+ | ===== 12. Further Information ===== | ||
For information about where to buy or find suitably qualified installers, visit the [[https:// | For information about where to buy or find suitably qualified installers, visit the [[https:// |
battery_compatibility/byd_b-box.txt · Last modified: 2024-01-22 07:32 by guy_stewart