Decommissioned battery sorting method and device
A sorting and battery technology, applied in the direction of measuring devices, sorting, measuring electricity, etc., can solve the problems of time-consuming energy consumption, no economic value, etc., achieve the effect of fast sorting and reduce the cost of battery sorting
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Embodiment 1
[0095] In Example 1, the maximum operating voltage difference ΔU of a battery module sample decommissioned from an electric vehicle ten minutes before the end of charging max The relationship with its health state value SOH is as follows image 3 shown, from image 3 It can be seen that the maximum operating voltage difference ΔU of the battery module sample ten minutes before the end of charging max It is linearly correlated with its state of health value SOH, ΔU max =0.3441-0.00369×SOH, the degree of fit R 2 = 0.9736.
Embodiment 2
[0096] In Example 2, the maximum operating voltage difference ΔU of the battery module sample decommissioned from an electric vehicle in the fifth minute before the end of charging max The relationship with its health state value SOH is as follows Figure 4 shown, from Figure 4 It can be seen that the maximum operating voltage difference ΔU of the battery module sample ten minutes before the end of charging max It is linearly correlated with its state of health value SOH, ΔU max = 0.4708-0.00453 × SOH, the degree of fit R 2 = 0.9684.
Embodiment 3
[0097] In Example 3, the maximum operating voltage difference ΔU in the first minute before the end of charging of a battery module sample decommissioned from an electric vehicle max The relationship with its health state value SOH is as follows Figure 5 shown, from Figure 5 It can be seen that the maximum operating voltage difference ΔU of the battery module sample ten minutes before the end of charging max It is linearly correlated with its state of health value SOH, ΔU max =0.4763-0.00275×SOH, the degree of fitting R 2 = 0.8964.
[0098] Based on the same idea of the above method, the present invention also provides a decommissioned battery sorting device, such as Image 6 As shown, the device includes:
[0099] The first obtaining module is used to charge the battery module to be tested, and obtain the working voltage of each battery unit in the battery module to be tested for a preset period of time before the end of charging;
[0100] A determining module, conf...
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