Automobile BMS (battery management system) assembly technology

Automotive BMS (battery management system) assembly technology involves many aspects, including hardware design, software programming, system integration and quality control.


BMS is the abbreviation of battery management system. It is a system that manages batteries and is regarded as the “brain” of the power battery system:

  • Function: Mainly monitors and manages the status of the battery, including battery voltage, current, temperature, SOC (state of charge), SOH (state of health), etc., to ensure the safe and efficient operation of the battery.
  • Composition: Usually includes hardware parts such as sensors, controllers, actuators, and corresponding software algorithms.
  • Importance: In new energy vehicles, the performance of BMS directly affects the performance, cruising range, safety and other aspects of the vehicle.

Main technical

Hardware Design

  • Sensor Selection: Used to collect various parameters of the battery, such as voltage, current, temperature, etc. It is necessary to choose a sensor with high accuracy and good stability.
  • Controller Selection: Responsible for processing sensor data, executing control algorithms, and sending instructions to actuators. It is necessary to choose a controller with powerful performance and high reliability.
  • Actuator design: Such as battery balancing module, thermal management module, etc., used to adjust the battery status according to the instructions of the controller.

Software Programming

  • Data Acquisition and Processing: Write a program to read data from the sensor and perform necessary preprocessing and filtering.
  • State Estimation: Estimate the SOC, SOH and other state parameters of the battery through algorithms.
  • Safety Control: Based on the battery status, determine whether safety measures need to be taken, such as disconnecting the battery, adjusting charging and discharging power, etc.
  • Energy Management: Optimize battery energy usage and improve the vehicle’s cruising range and performance.

System Integration

  • Hardware connection: Ensure that all hardware components are correctly connected to achieve data transmission and control instruction delivery.
  • Software debugging: Ensure that all parts of the software can work together to achieve the expected functions.
  • System Test: Test the performance and reliability of the BMS in the vehicle environment.

Quality Control

  • Raw material inspection: Ensure that all raw materials meet quality requirements.
  • Process Control: Quality inspection and control are carried out during the assembly process to ensure that every step meets the process requirements.
  • Finished product testing: Conduct a comprehensive test on the assembled BMS to ensure that its performance and quality meet the requirements.

In conclusion

Automotive BMS assembly technology is a complex and critical technical field involving multiple aspects of knowledge and skills.

Through reasonable hardware design, precise software programming, effective system integration and strict quality control, the performance and reliability of BMS can be ensured, and the safe and efficient operation of new energy vehicles can be guaranteed.

The above is just an overview and a brief introduction to the main technical aspects. If you need more detailed information or in-depth discussion of specific aspects, please let me know and I will further assist you.

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