Method for controlling balance of power lithium ion battery
A lithium-ion battery and control method technology, which is applied in the field of battery equalization control, can solve the problems of inability to protect the service life of batteries, outdated equalization means, and low equalization efficiency, so as to improve battery consistency, increase cruising range, The effect of prolonging the service life
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[0033] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0034] Specific as figure 1 shown.
[0035] (1) Online determination of battery cells that need to be balanced under charging or discharging state
[0036] Specifically include:
[0037] Pre-measure the capacity index SOC of each battery cell i And the balanced capacity index SOC of the entire battery pack A ;
[0038] Get the capacity index SOC of each battery cell i with balanced capacity index SOC A The capacity deviation value ΔSOC between i , where ΔSOC i = SOC i -SOC A ;
[0039] According to the capacity deviation value ΔSOC i and balanced capacity index SOC A Identify the battery cells that need to be balanced.
[0040] Determine the battery cells that need to be balanced according to the capacity deviation value ...
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