Key technical standards for 1.5V rechargeable battery phosphate power lithium battery packs for communications

　　Key technical specifications for 1.5V rechargeable battery phosphate power lithium battery packs for communications:

　　1. Operating temperature range.

　　Lithium battery components are used under the following operating temperature standards:

　　Battery charging environment temperature: −10~55℃;

　　Discharge ambient temperature: −20~60℃;

　　Second, it is the characteristics of electric equipment.

　　The key characteristics are consistent inside the lithium battery pack.

　　Each lithium cell in the lithium battery pack should be manufactured by the same factory, have the same structure and composition, and comply with the following requirements:

　　1. The difference between the maximum value and the minimum value of the electrostatic induction short-circuit working voltage between each lithium battery cell in the rechargeable battery pack cannot exceed;

　　2. The difference between the maximum value and the minimum value of the static data internal resistance of each lithium battery cell in the rechargeable battery control module should be: less than ten meters W, and the square root of the error does not exceed ten meters W, and 5% of the average value if it exceeds ten meters W;

　　3. The difference between the maximum volume and the minimum volume of each core in the rechargeable battery pack must not exceed ±1% of the average value.

　　3. Ownership of energy storage technology.

　　The battery capacity should be no less than 95% of the short circuit capacity.

　　4. Cycle life.

　　The cycle life of the battery should be 800 to 2000 times.

　　5. High temperature will accelerate the embrittlement period.

　　After the battery is charged and discharged in accordance with regulations, the appearance should have no obvious deformation, rust, smoke or explosion, and the test cycle should be no less than 52 times.

　　6. Electromagnetic compatibility testing.

　　1. Anti-interference of electrostatic induction charge and discharge. The lithium battery pack should comply with GB/Level 4 regulations. After testing, the appearance should have no obvious deformation, leakage, smoke or explosion, and should be able to work normally.

　　2. The degree of transmission interference. The lithium battery pack should comply with the requirements of YD/T983-1998 Class B. After the test, the appearance should have no obvious deformation, leakage, smoke, explosion, etc., and should be able to work normally.

　　3. Limitations on interference from radiation sources. The lithium battery pack should comply with the requirements of YD/T983-1998 Class B. After the test, the appearance should have no obvious deformation, leakage, smoke, explosion, etc., and should be able to work normally.

　　4. Impact resistance (impact resistance). The lithium battery pack should comply with GB/Level 4 regulations. After testing, the appearance should have no obvious deformation, leakage, smoke or explosion, and should be able to work normally.

　　7) Battery management function.

　　7. Accuracy of displayed information. The lithium battery pack is equipped with a dedicated battery intelligent management system (BMS). The deviation between the various variable values displayed by the BMS and the actual variable values of the battery should meet the requirements of Table 1.

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