battery_compatibility:byd_b-box
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| battery_compatibility:byd_b-box [2018-10-23 13:59] – [1. Product & system compatibility] guy_stewart | battery_compatibility:byd_b-box [2024-01-22 07:32] (current) – guy_stewart | ||
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| - | ====== Victron & BYD B-Box ===== | + | ====== Victron & BYD ====== |
| + | |||
| + | ^ 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 | {{ : | ||
| + | | ESS | yes| yes| yes| yes| yes| yes| | ||
| + | | Grid Backup| | ||
| + | | Off-Grid| | ||
| + | | Module capacity| | ||
| + | | Module limit | 32| 32| 12| 64| 64| 64| | ||
| + | | Max capacity| | ||
| + | ===== 1. Product & System compatibility | ||
| - | The combination of Victron | + | === 1.1 Offgrid, Backup and Energy Storage Systems (ESS) === |
| + | Victron | ||
| - | The BYD B-Box includes an integrated Battery Management System | + | * Energy Storage Systems |
| + | * Grid Backup | ||
| + | * Off-grid | ||
| - | ==== 1. Product & system compatibility ==== | + | __Special note for Off-Grid systems__ |
| - | === 1.1 Offgrid, Backup | + | 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. |
| - | Victron + BYD B-Box can be used for the following system types: | + | |
| - | * Off-grid | + | === 1.2 A GX device is required, eg Cerbo GX, etc === |
| - | * Backup | + | |
| - | * Energy Storage Systems ([[ess: | + | |
| - | === 1.2 A Venus-device | + | It is essential to use the BMS-Can |
| - | 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 Pro series |
| - | When used with B-Box batteries, the minimum required firmware version for the [[https:// | + | === 1.3 All 48V Multis, MultiPlusses, MultiGrids, Quattros |
| - | === 1.3 All 48V Multis, MultiPlusses, | + | The minimum supported firmware version is 469. Updating to the latest firmware is recommended for new installations, and troubleshooting issues. |
| - | The minimum firmware version is 422. Though updating | + | These inverter/ |
| - | These inverter/ | + | In grid connected |
| - | In grid connected | + | In off-grid systems, |
| - | In off-grid systems, the control functions of the BYD Battery Management System (BMS) are built into the latest version of the Venus-device. | + | === 1.4 Solar Charger compatibility === |
| - | == 1.3.1 Minimum Battery Sizing == | + | 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. | ||
| + | |||
| + | 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. | ||
| + | |||
| + | (*) 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 === | ||
| + | |||
| + | The following batteries are supported: | ||
| + | ^ B-BOX LV series type ^ | ||
| + | | B-BOX Pro 2.5-10.0 | ||
| + | | B-BOX Pro 12.8 | | ||
| + | | B-BOX Pro 13.8 | | ||
| + | | B-BOX Res 2.5-10.0 | ||
| + | | B-BOX Compact | ||
| + | | B-BOX L 3.5-14.0 | ||
| + | | 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. | ||
| + | |||
| + | 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. | ||
| + | |||
| + | 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 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 | ||
| 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-device. Temperature effects on charge rates should be considered in the design stage in hot and cold climates. | + | |
| + | 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. | ||
| - | The table below shows the minimum number of 2.5 kWh battery cells required for the specified inverter/ | ||
| - | ^ | + | The table below shows the minimum number of battery modules required for the specified inverter/ |
| - | | | + | |
| - | | | + | === Battery Modules Required - Pro 2.5 === |
| + | |||
| + | |Phases| | ||
| + | | | ||
| + | | | ||
| + | | | ||
| + | | Inverter RS & Multi RS 48/ | ||
| | Quattro 48/ | | Quattro 48/ | ||
| | Quattro 48/ | | Quattro 48/ | ||
| - | | Quattro 48/ | + | | Quattro |
| - | | Quattro 48/ | + | | Quattro |
| - | | EasySolar 48/ | + | | EasySolar |
| - | | EasySolar 48/ | + | | EasySolar 48/ |
| - | The specification for these minimum battery sizes was obtained from [[http:// | ||
| + | === Battery Modules Required - Pro 12.8 & 13.8 === | ||
| - | === 1.4 All 48V BlueSolar and SmartSolar MPPT Chargers are compatible === | + | |Phases| |
| + | | Inverter/ | ||
| + | | MultiPlus & MultiPlus II & MP-II GX 48/ | ||
| + | | MultiPlus, MultiPlus II, MP-II GX, & Quattro-II 48/ | ||
| + | | Inverter RS & Multi RS 48/ | ||
| + | | Quattro 48/ | ||
| + | | Quattro 48/ | ||
| + | | Quattro & MultiPlus-II 48/ | ||
| + | | Quattro & MultiPlus-II 48/ | ||
| + | | EasySolar & EasySolar-II 48/ | ||
| + | | EasySolar 48/ | ||
| - | 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__ | + | ===Battery Modules Required - L 3.5 === |
| + | |Phases| | ||
| + | | Inverter/ | ||
| + | | MultiPlus & MultiPlus II & MP-II GX 48/ | ||
| + | | MultiPlus, MultiPlus II, MP-II GX, & Quattro-II 48/ | ||
| + | | Inverter RS & Multi RS 48/ | ||
| + | | Quattro 48/ | ||
| + | | Quattro 48/ | ||
| + | | Quattro & MultiPlus-II 48/ | ||
| + | | Quattro & MultiPlus-II 48/ | ||
| + | | EasySolar & EasySolar-II 48/ | ||
| + | | EasySolar 48/ | ||
| - | MPPTs are controlled via the Venus-device. Make sure the Venus-device runs v2.15 or later, and the MPPTs to 1.30 or the latest available version. | + | Minimum discharge SOC for 1 single Battery Box L 3.5 is 12%; for 2 or more (7kWh+) it can be 10%. |
| - | The MPPT requires connection | + | Up to 4 L modules can be installed per L series BCU; 5 or more will require |
| - | To test operation, try disconnecting the Venus-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:// | + | |
| - | __MPPTs with a VE.Can port__ | ||
| - | Firmware should be at least version 2.05. | + | === Battery Modules Required - Premium LVL 15.4 === |
| - | When using VE.Can MPPT' | + | |Phases| |
| + | | Inverter/ | ||
| + | | MultiPlus & MultiPlus II & MP-II GX 48/ | ||
| + | | MultiPlus, MultiPlus II, MP-II GX, & Quattro-II 48/ | ||
| + | | Inverter RS & Multi RS 48/ | ||
| + | | Quattro 48/ | ||
| + | | Quattro 48/ | ||
| + | | Quattro & MultiPlus-II 48/ | ||
| + | | Quattro & MultiPlus-II 48/ | ||
| + | | EasySolar & EasySolar-II 48/ | ||
| + | | EasySolar 48/ | ||
| - | === 1.5 Battery compatibility === | ||
| - | The following batteries are supported: | + | === Battery Modules Required |
| - | ^ B-BOX LV series type ^ | + | |
| - | | B-BOX Pro 2.5-10.0 | | + | |
| - | | B-BOX Pro 12.8 | | + | |
| - | | B-BOX Pro 13.8 | | + | |
| - | | B-BOX Res 2.5-10.0 | + | |
| - | | B-BOX Compact | + | |
| - | Minimum BYD firmware version: BMU_V2_V4-13_15-Mar-2017. | + | |Phases| |
| + | | Inverter/ | ||
| + | | MultiPlus & MultiPlus II & MP-II GX 48/ | ||
| + | | MultiPlus, MultiPlus II, MP-II GX, & Quattro-II 48/ | ||
| + | | Inverter RS & Multi RS 48/ | ||
| + | | | ||
| + | | Quattro 48/ | ||
| + | | Quattro & MultiPlus-II 48/ | ||
| + | | Quattro & MultiPlus-II 48/ | ||
| + | | | ||
| + | | | ||
| - | On-screen, or via Remote Console on the Venus-device, | + | * Note for 7 units two stacks are required. One stack is 4 battery modules, the other is 3. |
| - | Batteries with older firmware versions can be updated. Please contact BYD for more information. | + | === Battery Modules Required - Premium LV Flex 5.0 === |
| - | ==== 2. Wiring of CAN-bus cable between B-Box and Venus-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-device. | + | |Phases| |
| + | | Inverter/Charger | On-Grid | On-Grid | Off-grid | Off-grid | | ||
| + | | MultiPlus 48/500 & 48/ | ||
| + | | MultiPlus 48/1200 & 48/ | ||
| + | | MultiPlus 48/ | ||
| + | | MultiPlus & MultiPlus II & MP-II GX 48/3000/35| 1| 3| 2| 4| | ||
| + | | MultiPlus, MultiPlus II, MP-II GX, & Quattro-II 48/ | ||
| + | | Inverter RS & Multi RS 48/ | ||
| + | | | ||
| + | | Quattro 48/ | ||
| + | | Quattro & MultiPlus-II 48/ | ||
| + | | Quattro & MultiPlus-II 48/ | ||
| + | | | ||
| + | | | ||
| - | Then, plug a [[https:// | ||
| - | More information about the cable can be found in [[battery_compatibility: | + | **" |
| - | Without properly connecting this cable, the battery | + | The specification for these minimum |
| - | It is important to ensure this connection and display of the battery on the Venus-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-device has not been received. This is a temporary measure, DO NOT attempt to operate | + | ===== 3. CAN-Bus wiring between |
| - | ==== 3. Wiring of the Allow-to-charge and allow-to-discharge contacts ==== | + | Use the // |
| - | Using the latest firmware on all devices, the BYD allow to charge contacts are only required when using VE.Can | + | Then, plug a [[https:// |
| - | 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. | + | More information about the cable can be found in [[battery_compatibility: |
| - | B-Box relays: | + | 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. |
| - | * Relay T1-T2: closed | + | 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 |
| - | * Relay T4-T5: closed if allowed | + | |
| - | {{: | + | ===== 4. VEConfigure settings |
| - | ==== 4. VEConfigure settings ==== | + | |
| This section presumes familiarity with [[https:// | This section presumes familiarity with [[https:// | ||
| Line 117: | Line 203: | ||
| === 4.1 General tab === | === 4.1 General tab === | ||
| * Check the " | * Check the " | ||
| - | * Set the battery capacity to the total capacity of the battery: 50Ah times the number of battery modules. | + | * Set the battery capacity to the total capacity of the battery: |
| * The other parameters (" | * The other parameters (" | ||
| === 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-device to the inverter/ | + | In normal operation, the charge parameters are controlled by the BYD BMU and communicated through the system by the [[venus-os: |
| + | |||
| + | === Charger tab === | ||
| ^ VEConfigure Charge Parameter | ^ VEConfigure Charge Parameter | ||
| Line 128: | Line 216: | ||
| | Charge curve | Fixed | | Charge curve | Fixed | ||
| | Absorption voltage | | Absorption voltage | ||
| - | | Float voltage | + | | Absorption voltage off-grid systems |
| + | | Float voltage | ||
| | 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 === | ||
| + | |||
| + | In the Inverter tab of VEConfigure | ||
| + | ^VEConfigure Inverter Parameter | ||
| + | |DC input low shut-down | 47V| | ||
| + | |DC input low restart | ||
| + | |DC input low pre-alarm* | 51V| | ||
| + | |||
| + | * The pre-alarm setting is dependant on your preference and on site specific requirements. You may wish for this to be activated earlier (eg 53V) in an off grid situation to allow time to start a backup generator. If the system is configured in ESS mode, you may not wish to have this alarm trigger until below the Sustain threshold voltage (eg 49V), as this system is in no danger normally and will ' | ||
| + | |||
| + | |||
| + | === ESS System Settings === | ||
| + | |||
| + | If you are using the battery as part of a [[ess: | ||
| - | === Option A: ESS Assistant | + | The settings that are specific to the BYD battery in the VEConfigure |
| - | Use this option for ESS systems. | + | |
| - | Select the fifth battery | + | Select the externally managed Lithium |
| - | {{ : | + | {{: |
| ^ ESS Parameter ^ Settings ^ | ^ ESS Parameter ^ Settings ^ | ||
| |Sustain voltage. | |Sustain voltage. | ||
| |Dynamic cut-off values | set all values to 47V.| | |Dynamic cut-off values | set all values to 47V.| | ||
| - | |Restart offset: | + | |Restart offset: |
| - | === Option B: Off-grid system using CAN-bus cable. ==== | ||
| - | You will need the latest firmware on all connected devices. | ||
| - | On the Venus-device, go to Settings, System setup: | + | |
| + | ===== 5. GX device configuration ===== | ||
| + | |||
| + | On the [[venus-os: | ||
| ^Venus Settings -> System Setup Parameter ^ Value ^ | ^Venus Settings -> System Setup Parameter ^ Value ^ | ||
| Line 156: | Line 263: | ||
| - | In the Inverter tab of VEConfigure | + | * Select the //CAN-bus BMS (500 kbit/s)// CAN-profile in the GX device. Menu path: //Settings -> Services -> CAN-profile// |
| - | ^VEConfigure Inverter Parameter | + | |
| - | |DC input low shut-down | 47V| | + | |
| - | |DC input low restart | + | |
| - | |DC input low pre-alarm* | 51V| | + | |
| - | + | ||
| - | * The pre-alarm setting is dependant on your preference and on site specific requirements. You may wish for this to be activated earlier (eg 53V) in an off grid situation to allow time to start a backup generator. If the system is configured in ESS mode, you may not wish to have this alarm trigger until below the Sustain threshold voltage (eg 49V), as this system is in no danger normally and will ' | + | |
| - | + | ||
| - | ==== 5. Venus-device Configuration ==== | + | |
| - | + | ||
| - | 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// | + | |
| * 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: | ||
| Line 176: | Line 271: | ||
| {{ : | {{ : | ||
| - | This parameters page is also a good place to check that all batteries are connected and working properly. In normal working conditions, 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, |
| - | === Color Control GX Configuration === | + | Note these limits have been adjusted higher by BYD during firmware updates, so the charge and discharge current limit figure may appear slightly higher. |
| - | + | ||
| - | 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 still need to connect the Allow-to-charge wires if using the VE.Can MPPT and VGX. | + | |
| - | Be aware that this additional CAN-bus interface is not electrically isolated. | + | This allows data from the MPPT and BYD battery simultaneously. |
| - | ===== 6. Configure VE-Direct MPPT ===== | + | The CAN-bus connections are galvanically isolated at the BYD BMU. There is no issues using the non-isolated connection of the VGX. |
| - | In normal operation | + | === 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 | ||
| - | This section presumes familiarity with [[victronconnect: | + | For this reason it is recommended to use the Cerbo GX instead. |
| - | The settings below are a precautionary measure. | + | ===== 6. Solar Charging ===== |
| - | ^MPPT Parameter ^ Setting ^ | + | ==== 6.1 Victron MPPT charger settings ==== |
| - | |Battery voltage. |48V| | + | |
| + | Victron MPPT charge characteristics are automatically configured & governed by the [[venus-os: | ||
| + | |||
| + | ^ MPPT Parameter ^ Setting ^ | ||
| + | |Battery voltage | ||
| |Absorption voltage | |Absorption voltage | ||
| + | Use [[victronconnect: | ||
| + | |||
| + | ==== 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 ===== | ||
| Line 209: | Line 316: | ||
| 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/ |
| + | |||
| + | 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, | ||
| + | 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). | ||
| - | As a safety precaution, the inverter/ | + | If you then reconnect |
| - | 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 221: | Line 337: | ||
| If its not visible, check: | If its not visible, check: | ||
| - | * Venus-device firmware version (update to latest version, v2.15 or later) | + | * [[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. | ||
| Line 228: | Line 344: | ||
| === 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: | ||
| {{: | {{: | ||
| + | |||
| + | Also check that your are seeing the expected 35-40 A of discharge current per installed module. | ||
| Locally on-site, you can check the Run LED on the BYD BMU, it needs to be lit up continuously: | Locally on-site, you can check the Run LED on the BYD BMU, it needs to be lit up continuously: | ||
| Line 265: | Line 383: | ||
| * Could be an external issue, unacceptable voltage or current. | * Could be an external issue, unacceptable voltage or current. | ||
| - | ===== 9. Step by Step Guide ===== | + | ===== 9. Step by Step Installation |
| - | If you need further details, | + | There is a step by step installation |
| - | ===== 10. Known Issues ===== | + | [[https:// |
| - | ==== 10.1 Inaccurate State of Charge (SoC) Readings ==== | + | 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, |
| - | 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-device and reported to the user and the system. | + | ==== Introduction to the new BYD Premium range LVL and LVS ==== |
| + | |||
| + | [[https:// | ||
| + | |||
| + | ==== 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:// | ||
| + | |||
| + | Victron presented more information that was specific to our integration as part of that webinar - available here - https:// | ||
| + | |||
| + | ==== User contributed installation guide ==== | ||
| + | |||
| + | A user contributed [[battery_compatibility: | ||
| + | |||
| + | ===== 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 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: | ||
| 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. | ||
| Line 281: | Line 419: | ||
| This limitation also applies to charge currents as well as loads. However it is more common to have low powered loads for long periods of time than low charge currents. | This limitation also applies to charge currents as well as loads. However it is more common to have low powered loads for long periods of time than low charge currents. | ||
| - | The reported State of Charge will self correct when the battery is 100% full or near 10% empty, and this can appear as sudden jumps in the VRM from very little load or charge. | + | The reported State of Charge will self correct when it reaches |
| This has no impact on actual usable capacity of battery, only on the how it is reported to the user and other systems (such as alarms or triggers). | This has no impact on actual usable capacity of battery, only on the how it is reported to the user and other systems (such as alarms or triggers). | ||
| Line 287: | Line 425: | ||
| === Work-arounds === | === Work-arounds === | ||
| - | If precise state of charge is important, | + | If precise state of charge is important, it is possible |
| 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. | ||
| Line 302: | Line 440: | ||
| {{: | {{: | ||
| - | ==== 10.2 125A cabinet limit ==== | + | === 10.2 125A cabinet limit === |
| The IP55 BYD cabinets are designed to take 4 battery modules and are supplied with 125A circuit breakers. Each battery module is able to supply and receive a continuous 35A, all together a combined 140A. This means it is possible to overload the circuit breaker. | The IP55 BYD cabinets are designed to take 4 battery modules and are supplied with 125A circuit breakers. Each battery module is able to supply and receive a continuous 35A, all together a combined 140A. This means it is possible to overload the circuit breaker. | ||
| Line 313: | Line 451: | ||
| - | ==== 10.3 Cold Weather Performance | + | === 10.3 Cold Weather Performance === |
| The BYD cells will limit the charge current allowed at lower temperatures. | The BYD cells will limit the charge current allowed at lower temperatures. | ||
| Line 326: | Line 464: | ||
| Cells will also heat themselves up when charged and discharged. | Cells will also heat themselves up when charged and discharged. | ||
| - | ===== 11. DISQUS ===== | + | 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. |
| + | |||
| + | |||
| + | ===== 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. High voltage warning or alarm shown on battery status ===== | ||
| + | |||
| + | The 'high voltage' | ||
| + | |||
| + | It is easiest to confirm this diagnosis in VRM in the Advanced Widget for the Battery Monitor as it logs this data over time. | ||
| + | {{: | ||
| + | |||
| + | 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, | ||
| + | |||
| + | {{: | ||
| + | |||
| + | In an imbalanced battery installation, | ||
| + | |||
| + | {{: | ||
| + | |||
| + | 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', | ||
| + | |||
| + | If you are unable to maintain the target voltage to balance the batteries without the 'high voltage' | ||
| + | |||
| + | {{: | ||
| + | |||
| + | 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: | ||
| + | |||
| + | {{: | ||
| + | |||
| + | 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; | ||
| + | |||
| + | 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. | ||
| + | |||
| + | 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. | ||
| + | |||
| + | ===== 13. Further Information ===== | ||
| + | |||
| + | For information about where to buy or find suitably qualified installers, visit the [[https:// | ||
| + | |||
| + | Further community discussion about installing and using BYD and Victron can found at [[https:// | ||
| + | |||
| + | |||
| + | ===== DISQUS ===== | ||
| ~~DISQUS~~ | ~~DISQUS~~ | ||
battery_compatibility/byd_b-box.1540295943.txt.gz · Last modified: 2018-10-23 13:59 by guy_stewart