This standard specifies the lithium ion power for electric vehicles The requirements, test methods, testing rules, signs, packaging, transportation and storage of batteries (hereinafter referred to as battery). This standard is suitable for electric vehicles for lithium ion power batteries.
The accuracy of the measurement instrument and instrument should meet the following requirements: >
1. Voltage Measurement device: accuracy is not less than 0.5, its internal resistance is at least 1k2/v;2. The current measurement device: accuracy is not less than 0.5;
3. Temperature measurement device: Have
Appropriate range , the degree of division is not greater than LC, the accuracy of the calibration is not less than 0.5 ℃; > 4. Timer: on time, division, second degree, accuracy is +0.1%;
5. Measurement size The amount of tools: the point value is not greater than 1mm;
6. The weighing device for weighing quality: accuracy is+0.05%.
The battery charging requirements before the test:
At room temperature, the battery module is discharged at 1i1 (a) to the current to the current to The voltage of any cell battery is lower than the discharge termination voltage. Hanging 60 minutes (or the shelter ) provided by the enterprise is not higher than 60min), and then charged according to the charging method provided by the enterprise. >
Short -circuit test follows the following steps:
1. The battery module is according to the above method according to the above method.充电；>2.将蓄电池模块经外部短路10min，
3. Observe 1h. >
This machine is used to test the battery in the case where the battery is connected with a certain resistance short connection. Whether it will explode and fire, and at the same time, the short -connecting large current is displayed through the relevant instrument.
Battery short -circuit trialExamination machine
The comprehensive multiple battery short -circuit test standards are designed and designed. The short -circuit device in accordance with the standard requirements must meet the internal resistance range ≤5MΩ, so as to obtain a large short -circuit current in the test requirements;The design must also be able to withstand the impact of large currents, so we have selected industrial -grade DC electromagnetic contactors and all -copper wiring columns and internal copper plates. The wide copper plates effectively improve the heat dissipation effect, make large current short -circuit devices safer, and effectively reduceThe loss of the test equipment ensures the accuracy of the test data.
Except QC/T 743-201X test standards also meet IOS 31485-2015, IOS 31241-2014, UN38.3, IEC62133, QC/T743-201X, IOS 8897.4-2008 and other test standards. >