Battery-Management-Systems-BMS-Relay-8~20S-400A
$84.181pcs
8~20S 400A BMS relay module for high-voltage battery pack charge/discharge control and safety protection.
| Dimensions | 173 × 70 × 16 mm |
|---|
2361 in stock
Volume pricing is available starting at quantity 5 pieces. Inquire for details.
Product Overview
The 400A intelligent relay BMS equipped with a comprehensive range of functions. These functions include cell voltage detection, temperature detection, and high-voltage detection for real-time monitoring of battery status; battery balancing to ensure consistent performance across battery cells; customizable communication interfaces supporting CAN (Controller Area Network), 485, and TTL (Transistor-Transistor Logic) protocols to adapt to diverse application scenarios; GPRS and Bluetooth connectivity (with mobile APP compatibility) for remote data transmission and user interaction; sleep-wake-up control and delayed power-off features for energy conservation and operational safety; State of Charge (SOC) estimation to accurately assess remaining battery capacity; and MOSFET control for precise regulation of battery charging, discharging, and overall operation.
Product Display
Label content is subject to the physical product.
Block Diagram
System Topology
Key Components BOM List
| Component Type | Model | Supplier |
|---|---|---|
| Main Control | HC32L072 | Wuxi Huadong MCU |
| Acquisition Chip | AN49522 | Zhongying Electronics |
| Power | 104R0NS | Silan Microelectronics |
Interface Definitions
Battery negative pole
The wiring mark is B-. You need to reconnect the battery to the terminal before performing other operations.
Charge and discharge negative pole
The connection is labeled C-, black. The same-port MOS design uses one port for both charging and discharging.
power output P-
Power output negative, connected to relay.
Wiring Diagram
Typical wiring diagram
Low-cost wiring diagram
Among them: 1 Relay, needs to be purchased by the customer based on actual application; common brands: Tyco, BYD, Kunshan Guoli, etc.
2 DC/DC buck module, 72V to 12V, output current needs to be above 2A, needs to be purchased by the customer based on actual application.
3 Pre-charge resistor, generally choose a 100W, 10 ohm resistor, needs to be purchased by the customer based on actual application.
article: how to design bms
Shipping Cost
We only ship to the United States. Shipping costs are calculated based on the total order amount.
Shipping Method And Delivery Time
All orders will be processed and shipped within 72 hours of placing the order (excluding weekends and holidays). They will ship from Shenzhen, China, primarily via 4PX logistics. Depending on the destination and logistics conditions, other carriers such as DHL, FedEx, UPS, USPS, etc., may also handle the delivery. Estimated shipping time is 7-12 business days, with actual delivery occurring in 10-17 business days, depending on logistics conditions.
Payment:
We accept Visa, Master card, Maestro, American Express, JCB, Dinner's Club, Discover, Paypal, Apple Pay, Google Pay .

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