battery_compatibility:pylontech_phantom
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battery_compatibility:pylontech_phantom [2019-05-06 11:28] – [3. CAN-bus Wiring] guystewart | battery_compatibility:pylontech_phantom [2019-08-15 11:40] – replace Venus-device with GX device guy_stewart | ||
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- | ====== Victron & Pylontech | + | ====== Victron & Pylontech |
The combination of Victron products with Pylontech lithium batteries has been tested and certified by the Victron and Pylontech R&D departments. | The combination of Victron products with Pylontech lithium batteries has been tested and certified by the Victron and Pylontech R&D departments. | ||
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This manual is intended to be used in conjunction with the product manual supplied by Pylontech. It provides additional and specific information regarding integration with Victron systems. | This manual is intended to be used in conjunction with the product manual supplied by Pylontech. It provides additional and specific information regarding integration with Victron systems. | ||
- | The Pylontech includes a Battery Management System (BMS) with each battery module. This interfaces with the Victron [[venus-os: | + | The Pylontech includes a Battery Management System (BMS) with each battery module. This interfaces with the Victron [[venus-os: |
===== 1. Product & system compatibility ===== | ===== 1. Product & system compatibility ===== | ||
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{{: | {{: | ||
- | ^ Battery ^ | + | ^ Battery ^ |
- | | Module capacity| | + | | Module capacity| |
=== 1.1 Offgrid, Backup and Energy Storage Systems are possible === | === 1.1 Offgrid, Backup and Energy Storage Systems are possible === | ||
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- | === 1.2 A Venus-device is required, eg Color Control GX (CCGX) or Venus GX (VGX) === | + | === 1.2 A GX-device is required, eg Color Control GX (CCGX) or Venus GX (VGX) === |
- | It is essential to use the CAN-bus connection of the [[venus-os: | + | It is essential to use the CAN-bus connection of the [[venus-os: |
The minimum required firmware version for the [[https:// | The minimum required firmware version for the [[https:// | ||
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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/ | + | These inverter/ |
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__MPPTs with a VE.Direct port__ | __MPPTs with a VE.Direct port__ | ||
- | MPPTs are controlled via the [[venus-os: | + | MPPTs are controlled via the [[venus-os: |
- | The MPPT requires connection to the [[venus-os: | + | The MPPT requires connection to the [[venus-os: |
- | To test operation, try disconnecting the [[venus-os: | + | To test operation, try disconnecting the [[venus-os: |
__MPPTs with a VE.Can port__ | __MPPTs with a VE.Can port__ | ||
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Each US2000B Plus battery module is approximately 50Ah at 48V, can provide 25A continuous charge and discharge and 100A peak for 1 minute. | Each US2000B Plus battery module is approximately 50Ah at 48V, can provide 25A continuous charge and discharge and 100A peak for 1 minute. | ||
- | The charge and discharge rates are managed automatically by the Pylontech battery and [[venus-os: | + | The charge and discharge rates are managed automatically by the Pylontech battery 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 BMS 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 BMS triggering over-current alarms. | ||
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Plug the type B cable with the side which is labeled Battery BMS into the Pylontech CAN port of the master battery. Plug the side labeled Victron VE.Can into the [[venus-os: | Plug the type B cable with the side which is labeled Battery BMS into the Pylontech CAN port of the master battery. Plug the side labeled Victron VE.Can into the [[venus-os: | ||
- | Then, plug a [[https:// | + | 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: | + | It is important to ensure this connection and display of the battery on the [[venus-os: |
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=== Hardware Protection Points === | === Hardware Protection Points === | ||
- | In normal operation, the charge parameter limits are set by the Pylontech battery and communicated through the system by the [[venus-os: | + | In normal operation, the charge parameter limits are set by the Pylontech battery and communicated through the system by the [[venus-os: |
* Low Voltage: When the battery discharges to 44.5V or less, battery protection will turn on. | * Low Voltage: When the battery discharges to 44.5V or less, battery protection will turn on. | ||
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If operation is attempted outside the operating range, the battery will disconnect to protect itself. | If operation is attempted outside the operating range, the battery will disconnect to protect itself. | ||
- | ===== 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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===== 6. VE-Direct MPPT Settings ===== | ===== 6. VE-Direct MPPT Settings ===== | ||
- | In normal operation the MPPT charge characteristics are governed by the [[venus-os: | + | In normal operation the MPPT charge characteristics are governed by the [[venus-os: |
This section presumes familiarity with [[victronconnect: | This section presumes familiarity with [[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/ | + | === 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 Pylontech battery is visible on the Venus-device list === | + | === Step 1. Check that the Pylontech battery is visible on the GX device list === |
{{ : | {{ : | ||
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If its not visible, check: | If its not visible, check: | ||
- | * [[venus-os: | + | * [[venus-os: |
* CAN-bus communication cabling between Pylontech and Victron system. Make sure that it is in the right way around. | * CAN-bus communication cabling between Pylontech and Victron system. Make sure that it is in the right way around. | ||
* Pylontech system is up and running (LEDs are on) | * Pylontech system is up and running (LEDs are on) | ||
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=== Step 2. Check that the Pylontech battery is ready for use === | === Step 2. Check that the Pylontech 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, |
=== Step 3. Check the Pylontech manual === | === Step 3. Check the Pylontech manual === | ||
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Pylontech' | Pylontech' | ||
- | You can confirm if this is affecting your installation be entering the Pylontech Battery menu on your Venus-device, and then the Parameters Menu. This will report the Charge Current Limit (CCL) and Discharge Current Limit (DCL). | + | You can confirm if this is affecting your installation be entering the Pylontech Battery menu on your GX device, and then the Parameters Menu. This will report the Charge Current Limit (CCL) and Discharge Current Limit (DCL). |
+ | ==== My system only charges the battery to 52V ==== | ||
+ | When DVCC is enabled, the battery (via the CAN-bms) is responsible for the charge voltage. The Pylontech battery requests a charge voltage of 53.2V. We have however found that in practice this is too high. | ||
+ | |||
+ | The Pylontech battery has 15 cells in series, so 53.2V equates to 3.55V per cell. This is very highly charged and makes the system prone to go overvoltage. | ||
+ | |||
+ | It should also be noted that a LiFePO4 cell stores very little additional energy above 3.45V. | ||
+ | |||
+ | For this reason we opted to override the BMS and cap the voltage at 52V. This sacrifices almost none of the capacity and greatly improves the stability of the system. | ||
+ | |||
+ | ==== The battery won't charge to 100% ==== | ||
+ | Also see the question above. The state of charge of the battery is estimated based on the overall voltage and on how well balanced the internal cells are. Because we cap the battery voltage at 52V, the state of charge will sometimes rise very slowly once it reaches the mid-90s. This is normal and usually resolves over time. | ||
===== 10. Further Information ===== | ===== 10. Further Information ===== | ||
battery_compatibility/pylontech_phantom.txt · Last modified: 2023-11-13 14:41 by guy_stewart