After the implementation of the strong standard, the safety protection technology of power lithium battery becomes the new focus of competition for car manufacturers
EV battery
How to choose iron lithium battery protection board
by：Vglory
2021-03-19
1. First, calculate the continuous current that the battery needs to supply according to the power of your own motor. 2. The major taboo of using lithium batteries in series is the serious imbalance of battery self-discharge. Imbalance is okay. The problem is that this state is a rapidly unstable state. A good battery has a small self-discharge, and a bad battery has a large self-discharge. The state with a large self-discharge is generally a state from good to bad. This process Is unstable. Therefore, the batteries with large self-discharge should be screened out, and only batteries with small self-discharge should be kept. 3. Determine the current value required by the protection board: Method one: 1. Divide the working rate of the motor by the voltage of the battery pack, and then multiply it by two to get the maximum current required by the motor. Method 2: 2. The current value of the protection board must be greater than the maximum current value marked on the controller. 4. Equalization means that when the voltages of the batteries in each string of the lithium battery pack are not much different, the voltages of the batteries in each string tend to be consistent through the equalization resistance. 5. The temperature control protection is to protect the battery pack by detecting the temperature of the battery in an environment such as exposure to the sun. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: How often does the car battery change?
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