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Author ：Iflowpower – Portable Power Station Supplier
Charging battery evaluation is divided into two parameter systems for self-evaluation and comparison evaluation. Self-evaluation is to evaluate its own performance for a brand's charging lithium battery, and comparative evaluation is compared to the battery of the same nominal capacity of two or more. Charging battery evaluation is an important means to describe the objective situation of batteries.
Under normal circumstances, the rechargeable battery evaluation requires specialized testing equipment, so it is good in the laboratory test, which can reduce the error. Whether it is self-evaluation or comparative evaluation, there must be two prerequisites for charging battery evaluation. First, the working temperature is within normal temperature, and the second is that the charging battery must be a new electricity.
For self-evaluation in rechargeable battery evaluation, the battery manufacturer 's focus is often not exactly the same: some contain all performance parameters, and some will only test the parameters related to capacity, some will add safety performance on this basis. test. However, for comparative evaluation, it is basically surrounded by parameters related to capacity.
At this time, in addition to the new electrical appliances, pay attention to all set conditions, such as temperature, current, voltage, stationary time, cycle number, detection cabinet model, etc., all rechargeable battery evaluation must be the same. of.
In the comparative evaluation, three parameters are mainly tested: 1. The actual capacity of the battery and the difference between the nominal capacity. The evaluation actual capacity is discharged on 0.
2C, within a specified cycle, the more actual capacity and the nominal capacity are closer, the more "real" the actual capacity and the nominal capacity. 2, evaluate battery life. On the basis of the actual capacity evaluation of the battery, the actual capacity of each battery is successfully compared to the nominal capacity, and the capacity attenuation rate is obtained, thus evaluation battery life.
3, evaluation self-discharge: take a certain time for a rechargeable battery evaluation cycle, have been put on the cutoff voltage of the rechargeable battery to see battery capacity changes. This process should pay attention to: Each brand is to select several batteries because there is a battery discharge equalization problem. Even if the overall self-discharge of different brands of charging battery is close to the rechargeable battery evaluation, the consistent battery can also be considered long-term storage capacity.
Charging battery evaluation is a serious and scientific job. Staff will not only record data for rechargeable battery, but also strengthen data processing and digital analysis capabilities of charging battery evaluation, thereby better serving battery users.
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