Full
Outline
The initial state of charge (SOC) of the battery is frequently random when users charge the batteries. Therefore, it is difficult to obtain complete charging data of lithium batteries in practical applications. To solve this problem, a state of health (SOH) estimation method of lithium battery based on partial charging data is proposed. Through the established GRU-BP (gated recurrent unit-back propagation) model, a complete charging curve can be obtained from partial charging data. Then the SOH can be estimated by the features extracted from the complete charging curve, which can effectively characterize the aging of battery. This method can achieve SOH estimation under any fixed voltage interval charging data in constant current charging mode. The experimental results show that the proposed method can effectively predict the SOH of lithium batteries with incomplete data, and the estimated root mean square error (RMSE) is below 2%.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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