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battery_compatibility:byd_b-box [2019-03-16 06:38]
guy_stewart
battery_compatibility:byd_b-box [2019-08-15 11:37] (current)
guy_stewart replaced Venus-device with GX device
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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:​start|Venus-device]] and supports multiple battery modules. ​+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. ​
  
  
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-=== 1.2 A Venus-device is required, eg Color Control GX (CCGX), Venus GX (VGX), etc === +=== 1.2 A GX device is required, eg Color Control GX (CCGX), Venus GX (VGX), etc === 
  
-It is essential to use the CAN-bus connection of a [[venus-os:​start|Venus-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 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. ​
  
-When used with B-Box batteries, the minimum required firmware version for the [[venus-os:​start|Venus-device]] is v2.15. 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 batteries, the minimum required firmware version for the [[venus-os:​start|GX device]] is v2.15. 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. ​
  
 === 1.3 All 48V Multis, MultiPlusses,​ MultiGrids and Quattros are compatible === === 1.3 All 48V Multis, MultiPlusses,​ MultiGrids and Quattros are compatible ===
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 The minimum firmware version is 422. Though updating to the latest firmware is recommended where possible. The minimum firmware version is 422. Though updating to the latest firmware is recommended where possible.
  
-These inverter/​charger units must be connected to the [[venus-os:​start|Venus-device]] via the VE.Bus connection port. +These inverter/​charger units must be connected to the [[venus-os:​start|GX device]] via the VE.Bus connection port. 
  
-In grid connected systems, advanced control functions are configurable in the ESS settings on the [[venus-os:​start|Venus-device]].+In grid connected systems, advanced control functions are configurable in the ESS settings on 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|Venus-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]].
  
  
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 __MPPTs with a VE.Direct port__ __MPPTs with a VE.Direct port__
  
-MPPTs are controlled via the [[venus-os:​start|Venus-device]]. Make sure the [[venus-os:​start|Venus-device]] runs v2.15 or later, and the MPPTs to 1.39 or the latest available version. ​+MPPTs are controlled via the [[venus-os:​start|GX device]]. Make sure the [[venus-os:​start|GX device]] runs v2.15 or later, and the MPPTs to 1.39 or the latest available version. ​
  
-The MPPT requires connection to the [[venus-os:​start|Venus-device]] to regulate charge currents as the batteries require (due to temperature,​ etc) +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|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://​www.victronenergy.com/​live/​mppt-error-codes#​err_67_-_no_bms|error #67: no BMS]]. ​+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__ __MPPTs with a VE.Can port__
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 Minimum BYD firmware version: BMU_V2_V4-13_15-Mar-2017. Minimum BYD firmware version: BMU_V2_V4-13_15-Mar-2017.
  
-On-screen, or via Remote Console on the [[venus-os:​start|Venus-device]], this version is named v4.13. ​+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. Batteries with older firmware versions can be updated. Please contact BYD for more information.
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 Each battery cell is approximately 50Ah at 48V (51.2V nominal). Each battery cell is approximately 50Ah at 48V (51.2V nominal).
  
-The following charge rates are managed automatically by the BYD BMU and [[venus-os:​start|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:​start|GX device]]. Temperature effects on charge rates should be considered in the design stage in hot and cold climates. ​
  
 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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 ===== 3. CANBus Wiring ===== ===== 3. CANBus Wiring =====
  
-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|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-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|Venus-device]]. Two VE.Can terminators are included with the package of the [[venus-os:​start|Venus-device]] as an accessory, only one is used. Keep the other one as a spare.+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]]. More information about the cable can be found in [[battery_compatibility:​can-bus_bms-cable|its manual]].
  
-Without properly connecting this cable, the battery will not show up on the display of the [[venus-os:​start|Venus-device]]. The battery will also turn itself off after several minutes.+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.
  
-It is important to ensure this connection and display of the battery on the [[venus-os:​start|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-os:​start|Venus-device]] has not been received. This is a temporary measure, DO NOT attempt to operate the battery cells normally without connection to the BMU. +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. 
  
  
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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:​start|Venus-device]] to the inverter/​charger and MPPT. However as a precaution it is advised to set these as suggested below. ​+In normal operation, the charge parameters are controlled by the BYD BMU and communicated through the system by the [[venus-os:​start|GX device]] to the inverter/​charger and MPPT. However as a precaution it is advised to set these as suggested below. ​
  
 === Charger tab === === Charger tab ===
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-===== 5. Venus-device Configuration =====+===== 5. GX device Configuration =====
  
-On the [[venus-os:​start|Venus-device]], go to Settings, System setup:+On the [[venus-os:​start|GX device]], go to Settings, System setup:
  
 ^Venus Settings -> System Setup Parameter ^ Value ^  ^Venus Settings -> System Setup Parameter ^ Value ^ 
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 ===== 6. VE-Direct MPPT Settings ===== ===== 6. VE-Direct MPPT Settings =====
  
-In normal operation the MPPT charge characteristics are governed by the [[venus-os:​start|Venus-device]] connected to the BYD battery. ​+In normal operation the MPPT charge characteristics are governed by the [[venus-os:​start|GX device]] connected to the BYD battery. ​
  
 This section presumes familiarity with [[victronconnect:​start|VictronConnect]] This section presumes familiarity with [[victronconnect:​start|VictronConnect]]
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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/​Charger or Venus-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|Venus-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|Venus-device]]. ​+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]]. ​
  
-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|Venus-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|Venus-device]].+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 Venus-device list ===+=== Step 1. Check that the BYD battery is visible on the GX device list ===
  
 {{:​battery_compatibility:​byd_in_devicelist.png?​direct&​600|}} {{:​battery_compatibility:​byd_in_devicelist.png?​direct&​600|}}
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 If its not visible, check: If its not visible, check:
  
-  * [[venus-os:​start|Venus-device]] firmware version (update to latest version, v2.15 or later)+  * [[venus-os:​start|GX device]] firmware version (update to latest version, v2.15 or later)
   * 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, ​ by the BYD system via the CAN-bus cable. They are visible on the [[venus-os:​start|Venus-device]]: Device List -> BYD B-Box battery -> Parameters menu.+Check the Max Charge Voltage parameter. This voltage parameter is sent, together with the other three parameters, ​ by the BYD system via the CAN-bus cable. They are visible on the [[venus-os:​start|GX device]]: Device List -> BYD B-Box battery -> Parameters menu.
  
 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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 === 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:​start|Venus-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. ​
  
 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:​start|Venus-device]] to use it for the displayed State of Charge. ​+If precise state of charge is important, it is possible to install a Victron BMV shunt, and program the [[venus-os:​start|GX device]] to use it for the displayed State of Charge. ​
 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. 
  
battery_compatibility/byd_b-box.1552714706.txt.gz · Last modified: 2019-03-16 06:38 by guy_stewart