锂电池产品对标技术方案
发布日期：2024年10月09日
编制单位：厦门海辰储能科技股份有限公司
参编单位：
方案编号：CS4538-20240924
标准号：IEC 62620:2023
| 序号 | 关键指标名称 | 指标值 | 试验/评价方法标准 |
|---|---|---|---|
| 1 | High rate permissible current | Step 1 – The cell or battery fully charged in accordance with 6.2; Step 2 – The cell or battery stored for not less than 1 h and not more than 4 h in an ambient temperature of 25 °C ± 5 °C; Step 3 – It then be discharged for 5 ± 0,1 s at 25 °C ± 5 °C and at the currents specified in Table 4 and during the discharge the terminal voltage was recorded; Step 4 – The capacity at 0,2 It A of the cell or battery was measured according to 6.3.1. | IEC 62620:2023中6.3.3 |
| 2 | Discharge performance at +25 °C | This test verifies the rated capacity of a cell or battery Step 1 – The cell or battery was fully charged in accordance with 6.2； Step 2 – The cell or battery was stored in an ambient temperature of 25 °C ± 5 °C, for not less than 1 h and not more than 4 h； Step 3 – The cell or battery was then discharged in the same ambient temperature and as specified in Table 2 to the final voltage specified by the manufacturer in 6.2； Step 4 – The capacity (Ah), delivered during step 3, was not less than that specified for this characteristic in Table 2. | IEC 62620:2023中6.3.1 |
| 3 | Charge (capacity) retention and recovery | 1、The charge retention value which is the value of the discharged capacity obtained at Step 3 was not less than 85 % of the rated capacity； 2、The charge recovery value which is the value of the discharged capacity obtained at Step 6 was not less than 90 % of the rated capacity. | IEC 62620:2023中6.4 |
| 4 | Endurance in cycles | Capacity of the cell or battery was not less than 60 % of the rated capacity after 500 cycles | IEC 62620:2023中6.6.1 |
| 5 | Endurance in storage at constant voltage (permanent charge life) | 1、Capacity of the cell or battery was not less than 85 % of the rated capacity after 90 days； 2、Declared temperature was in the range of the target test temperature and target test temperature minus 10 °C. | IEC 62620:2023中6.6.2 |
| 6 | Discharge performance at low temperature | No fusing, no deformation of the cell or battery case, and no leakage shall be observed. In addition, the cell or battery voltage during the discharge shall show no discontinuity. The capacity of the cell or battery shall be not less than 95 % of the rated capacity. | IEC 62620:2023中6.3.2 |
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