25S~32S Smart BMS 500A High voltage DC relay Communication protocol RS485 CAN BT lithium battery bms
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- Supplier: Dongguan Ouchi Electronic Technology Co. Ltd.
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Product Overview
Description
Product category
Type | Functional differences |
3S~4S BMS | ·Hall Current Sensor ·2-way relay control (charging, discharging). ·UART-BT、RS485、CAN. ·Other functions (12V output, switch). ·4-way temperature control |
8S BMS | ·Hall Current Sensor ·3-way relay control (charging, discharging and precharging). ·UART-BT、RS485、CAN. ·Other functions (12V output, switch). ·4-way temperature control |
10S~24S BMS | ·Hall Current Sensor ·3-way relay control (charging, discharging and precharging). ·UART-BT、RS485、CAN. ·Other functions (12V output, switch). ·8-way temperature control |
25S~32S BMS | ·Hall Current Sensor ·3-way relay control (charging, discharging and precharging). ·UART-BT、RS485、CAN*2. ·Other functions (12V output, switch). ·8-way temperature control |
Product Paramenters
Parameters | Indicators | ||
Current switch conductor | High voltage DC relay | ||
Support battery | Li-ion、Lifepo4、LTO | ||
Discharge current | 500A According to relay selection | ||
peak current | 2000A According to relay selection | ||
Charging current | 500A According to relay selection | ||
Internal resistance | 10mΩ | ||
Input / output mode | Different ports | ||
BMS switch | Passive switch | ||
Working power consumption | 50mA | ||
Sleep power consumption | 30μA | ||
Balance current | 80mA | ||
Communication function | 1 UART serial port, Bluetooth. 1 isolated RS485 interface, support Modbus protocol. 1 isolated CAN2.0B interface. | ||
Single cell voltage | Acquisition range | 0～5V | |
Detection error | ≤±0.1% | ||
Total battery pressure | Acquisition range | Battery voltage range | |
Detection error | ≤±0.2% | ||
Charge discharge current | Acquisition range | Hall Current Sensor 600A | |
Detection error | ±1 % | ||
temperature | Acquisition range | -40～125℃ | |
Detection error | ±1℃ | ||
Products Description
Options include products
Selected BMS, Hall current sensor, relay *2
Company Profile
FAQ
What is the difference between high voltage DC relay (contactor) and MOS transistor?
1. relay: high voltage resistance, high current withstand, not integrated in BMS, easy to replace, less affected by temperature rise, high power consumption, large size, not suitable for small capacity batteries.
2.mos: low voltage withstand, multiple increased current withstand in parallel, such as uneven current distribution, long-term use will damage, low power consumption, small size, and affected by temperature rise.
3. both relay and MOS have their own advantages. MOS is selected for low current and relay is selected for high current.
2.mos: low voltage withstand, multiple increased current withstand in parallel, such as uneven current distribution, long-term use will damage, low power consumption, small size, and affected by temperature rise.
3. both relay and MOS have their own advantages. MOS is selected for low current and relay is selected for high current.
Why do some products have one relay and two relays?
1. a relay product controls charging and discharging. When the battery is fully charged, it is controlled to turn off. In order to prevent overcharging, when there is voltage on the voltage detection line, the relay will not open, and the charger needs to be unplugged before discharging.
When the battery is discharged, the control is turned off. To prevent excessive discharge, the relay is turned on only when the detection line has voltage to charge the battery.
2. for the products of two relays, one controls charging and the other controls discharging. The charging relay is closed only after it is fully charged. In other cases, it is open. The discharging relay is closed only after it is discharged. In other cases, it is open.
When the battery is discharged, the control is turned off. To prevent excessive discharge, the relay is turned on only when the detection line has voltage to charge the battery.
2. for the products of two relays, one controls charging and the other controls discharging. The charging relay is closed only after it is fully charged. In other cases, it is open. The discharging relay is closed only after it is discharged. In other cases, it is open.
Why does the smart BMS support Li ion and LiFePO4?
1. because such chips can compile programs, different voltage range parameters can be set through supporting app or PC software.
2. the specification option exists because we have set the voltage parameters in advance.
2. the specification option exists because we have set the voltage parameters in advance.
Can the communication protocol be used to connect the solar controller?
1. although the communication ports are the same, the communication protocol is not interlinked and cannot be directly connected. Protocol docking is required first.
2. if you have software technicians, we can provide the contents of the agreement.
2. if you have software technicians, we can provide the contents of the agreement.
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