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18650 rechargeable battery lithium 3.7v 3500mah
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R03 Carbon battery.What is the core technology of electric vehicle power battery BMS?

release time:2024-03-12 Hits:     Popular:AG11 battery

  

  The biggest difference between new energy vehicles and traditional cars is that they are driven by batteries, so power battery technology is the core of new energy vehicles.

  What is the core technology of BMS?

  Recently, I saw a promotional sign of a domestic company. Because it uses underlying software such as AUTOSAR software architecture, it claims to have "comprehensive mastery of BMS software and hardware technology," to reach the world's advanced level, and to "adopt multiple equalization control capabilities. It is very eye-catching. These things Is it the core technology of BMS?

  Usually, the BMS system usually includes a detection module and arithmetic control module.

  Detection refers to measuring the voltage, current and temperature of the cell and the voltage of the battery pack, and then transmitting these signals to the computing module for processing and issuing instructions. Therefore, the computing control module is the brain of BMS. The control module generally includes hardware, basic software, runtime environment (RTE) and application software. The most core part - application software. The environment developed with Simulink is generally divided into two parts: battery status estimation algorithm and fault diagnosis and protection. State estimation includes SOC (StateOfCharge), SOP (StateOfPower), SOH (StateofHealth), as well as balancing and thermal management.

  Battery status estimation usually estimates SOC, SOP and SOH. SOC (state of charge) simply means how much power is left in the battery; SOC is the most important parameter in BMS, because everything else is based on SOC, so its accuracy and robustness (also called error correction ability) is extremely important. If there is no accurate SOC, no matter how many protection functions are added, the BMS will not be able to work properly, because the battery will always be in a protected state, and the life of the battery will not be extended.


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