battery_compatibility:byd_b-box-steps
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battery_compatibility:byd_b-box-steps [2018-08-22 15:55] – [Inverter/Charger (Multiplus, Quatro etc) firmware and settings] guystewart | battery_compatibility:byd_b-box-steps [2019-01-22 10:41] – external edit 127.0.0.1 | ||
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===== BMU, BMS and internal coms cabling (updated)===== | ===== BMU, BMS and internal coms cabling (updated)===== | ||
- | There are several elements to the BYD system. There is a single central Battery Management Unit (BMU), this is able to communicate to up to 32 individual 2.5kWh battery modules. Each of the battery modules also has their own Battery Management System (BMS) to individually protect the cells, and report back to the BMU, which collects data from all of them and reports it to the Venus-device. | + | There are several elements to the BYD system. There is a single central Battery Management Unit (BMU), this is able to communicate to up to 32 individual 2.5kWh battery modules. Each of the battery modules also has their own Battery Management System (BMS) to individually protect the cells, and report back to the BMU, which collects data from all of them and reports it to the [[venus-os: |
The BYD Battery Management Unit (BMU) is in the bottom section of the cabinet, it is incorrectly labelled BMS in this picture. | The BYD Battery Management Unit (BMU) is in the bottom section of the cabinet, it is incorrectly labelled BMS in this picture. | ||
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The top end of the cable went into the left port of battery#2. Finally the COMout of the third jumper went into the right port of battery #2 and the COMin went into the right port of battery #1. | The top end of the cable went into the left port of battery#2. Finally the COMout of the third jumper went into the right port of battery #2 and the COMin went into the right port of battery #1. | ||
===== BMS to CCGX (or Venus GX) cabling (updated) ===== | ===== BMS to CCGX (or Venus GX) cabling (updated) ===== | ||
- | A custom ethernet cable is required to to connect the BYD BMU to a Victron Venus-device (CCGX or VGX). | + | A custom ethernet cable is required to to connect the BYD BMU to a Victron |
- | 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 BMU. Plug the side labeled Victron VE.Can into the 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 BMU. Plug the side labeled Victron VE.Can into the [[venus-os: |
Then, plug a [[https:// | Then, plug a [[https:// | ||
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===== BMS to Multi/ | ===== BMS to Multi/ | ||
- | The Multi/ | + | The Multi/ |
===== Inverter/ | ===== Inverter/ | ||
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If you already have a power source, you can and should configure all the required settings first. We had a functioning lead acid bank to operate off while setting everything up. If you don’t then this whole procedure may vary a little. | If you already have a power source, you can and should configure all the required settings first. We had a functioning lead acid bank to operate off while setting everything up. If you don’t then this whole procedure may vary a little. | ||
- | This is important to consider that if the BYD battery has not yet been detected by the Venus-device, | + | This is important to consider that if the BYD battery has not yet been detected by the [[venus-os: |
- | If this is not possible, such as a firmware update is required on the CCGX. Then it is possible to temporarily run the battery without shutting down by disconnecting the RS485 cable that connects the battery module to the BMU. This is very temporary situation until you can connect the Venus-device for normal operation. | + | If this is not possible, such as a firmware update is required on the CCGX. Then it is possible to temporarily run the battery without shutting down by disconnecting the RS485 cable that connects the battery module to the BMU. This is very temporary situation until you can connect the [[venus-os: |
[[https:// | [[https:// | ||
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===== Check Parameters ===== | ===== Check Parameters ===== | ||
- | On the Venus-device, | + | On the [[venus-os: |
Scroll down to the **Parameters** menu option. | Scroll down to the **Parameters** menu option. | ||
- | Inside there is some data communicated by the BYD BMU to the Venus-device via the CANBus. | + | Inside there is some data communicated by the BYD BMU to the [[venus-os: |
The Discharge Current Limit should be 35A per cell, eg 70A for 2 cells. | The Discharge Current Limit should be 35A per cell, eg 70A for 2 cells. | ||
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{{ : | {{ : | ||
+ |
battery_compatibility/byd_b-box-steps.txt · Last modified: 2021-04-08 16:01 by boekel