BMS Woking Environment

Discover In-depth Insights into BMS Environment Characteristics

An in-depth understanding of the environmental characteristics of the BMS (Battery Management System) is essential to ensure its performance and safety. Below are some key points that provide insight into the environmental characteristics of your BMS:

1. Environmental Adaptability:

As the controller of an in-vehicle power battery system, the BMS needs to maintain operational stability in a variety of in-vehicle environments.The GB/T 38661-2020 and QC/T 897-2011 standards both put forward requirements for the environmental adaptability of the BMS, including the mechanical safety test and the climatic safety test. In the mechanical safety test, GB/T 38661-2020 adds mechanical impact and random vibration tests, while the temperature gradient test is added to the climatic safety test program, and these tests help to ensure the adaptability and stability of the BMS in practical applications.

2. Temperature management:

Temperature management of the BMS is critical to its performance and lifetime. Changes in ambient temperature can affect the performance and stability of the BMS. High temperatures may cause the temperature of the internal components of the BMS to rise, affecting normal operation, while extreme low temperatures may lead to errors or failures in the battery monitoring and control functions. Therefore, reasonable control of the ambient temperature of the BMS is essential to ensure its normal operation and reliability.

3. Storage temperature:

The effect of storage temperature on BMS should not be ignored. Excessive storage temperature may lead to an increase in the self-discharge rate of the battery pack, shortening the effective life of the battery, while extreme low temperature storage of the battery may cause electrolyte freezing problems, damaging the battery and the BMS system.

4. Electromagnetic compatibility performance:

BMS works in the harsh electromagnetic environment of electric vehicles, and improving the anti-electromagnetic interference performance of BMS is crucial to ensure the safe and reliable operation of the whole vehicle. The in-vehicle electromagnetic environment and its coupling interference mechanism to the BMS are studied, and the effective electromagnetic compatibility design technology of the BMS is researched, focusing on improving the anti-interference performance of the BMS.

5. System framework and communication:

The BMS system architecture includes a master-slave topology involving local ECU layer, voltage monitoring, multi-point temperature monitoring, passive balancing or active balancing, etc., which are realized by MCU or ASIC.The BMS needs to avoid the over-range abuse of the power electric and ensure the safe, reliable, high efficiency and long-life operation of the power battery.

6. Safety control and alarm:

BMS includes thermal system control, high-voltage power safety control, as well as notifying the vehicle controller through the network after diagnosing a fault and requesting effective treatment to prevent damage to the battery and human beings caused by high temperature, low temperature, overcharging, over-discharging, over-current and leakage.

7. Electrical adaptability performance:

The BMS needs to meet a series of electrical adaptability performance tests, including DC supply voltage, overvoltage, superimposed AC voltage, supply voltage slow drop and slow rise, supply voltage transients, reverse voltage, and short-circuit protection, etc., in order to ensure basic functionality under a variety of supply conditions.

These in-depth insights provide a better understanding of the operating characteristics of a BMS under different environmental conditions and how to ensure its performance and safety through design and testing.

Shenzhen Kinglisheng New Energy Eechnology .,Ltd

Discover In-depth Insights into BMS Environment Characteristics

1. Environmental Adaptability:

2. Temperature management:

3. Storage temperature:

4. Electromagnetic compatibility performance:

5. System framework and communication:

6. Safety control and alarm:

7. Electrical adaptability performance:

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