Battery pack SOC evaluation method and system
A battery pack and battery module technology, which is applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve the problem that the SOC value of the battery pack cannot reflect the actual state of the battery pack very smoothly and smoothly, and achieve a smooth SOC value of the battery pack. , the effect of true reflection
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[0051] Example 1
[0052] This embodiment provides a method for estimating the SOC value of a battery pack, such as figure 1 As shown, including the following steps:
[0053] S1: Obtain the deviation value between the SOC value of each battery module and the average SOC of the battery module, and determine the maximum deviation value.
[0054] S2: Determine whether the maximum deviation value is within the corresponding allowable deviation range; if yes, go to step S3, otherwise go to step S4.
[0055] S3: Use the average SOC of the battery module as the battery pack SOC value.
[0056] S4: If the largest deviation from the average SOC of the battery module is the maximum SOC value of the battery module, obtain the SOC value of the battery pack according to the maximum SOC value and the average SOC of the battery module; otherwise, according to the The minimum SOC value and the average SOC value of the battery module obtain the battery pack SOC value.
[0057] In the above scheme, whe...
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[0083] Example 2
[0084] This embodiment provides a system for estimating the SOC value of a battery pack, such as Figure 4 As shown, it includes a data acquisition module, a first judgment module, a first processing module, a second judgment module, and a second processing module.
[0085] The data acquisition module is used to obtain the deviation value between the SOC value of each battery module and the average value of the battery module SOC, and determine the maximum deviation value. The first judgment module is used to judge whether the maximum deviation value is within a corresponding allowable deviation range. The first processing module is configured to output the battery module SOC average value as the battery pack SOC value when the maximum deviation value is within a corresponding allowable deviation range. The second judgment module is used for judging whether the maximum deviation from the average value of the battery module SOC is the maximum SOC value of the b...
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