The difference between battery reliability test and safety test

Voltage, internal resistance, capacity, internal pressure, self-discharge rate, cycle life, sealing performance, safety performance, storage performance, appearance, etc., others are overcharge, overdischarge, solderability, corrosion resistance, etc

What are the main aspects of secondary battery performance?

Voltage, internal resistance, capacity, internal pressure, self-discharge rate, cycle life, sealing performance, safety performance, storage performance, appearance, etc., others are overcharge, overdischarge, solderability, corrosion resistance, etc.

dgbell battery test

What are the electrical performance indicators of mobile phone battery blocks?

There are many electrical performance indexes of the battery block. Only the main electrical characteristics are introduced here:

Battery block capacity: This indicator reflects the amount of electrical energy that the battery block can store in milliampere hours, for example: 1600mAH means that the battery can be continuously discharged for one hour at 1600mA.

Battery block life: This indicator reflects the number of repeated charge and discharge cycles of the battery block.

Internal resistance of the battery block: the smaller the internal resistance of the battery block, the better, but it cannot be zero.

Battery block charging upper limit protection performance: When charging a lithium battery, the upper limit of its voltage has a rating. In any case, the voltage of the lithium battery is not allowed to exceed this rating. It is determined and guaranteed by the IC selected on the PCB.

Battery block discharge lower limit protection performance: When the lithium battery block is discharged, the voltage of the lithium battery is not allowed to be lower than a certain rating under any circumstances. The rating is determined and guaranteed by the IC selected on the PCB. It should be noted that, when the general lithium battery block in the mobile phone is discharged, the lower limit protection value has not been reached, and the mobile phone is shut down due to insufficient battery power.

Battery block short-circuit protection characteristics: When the exposed positive and negative plates of the lithium battery block are short-circuited, the IC on the PCB board should be immediately judged and reacted to turn off the MOSFET. When the short-circuit fault is eliminated, the battery can immediately output electrical energy. These are identified and executed by the IC on the PCB.

What are the battery reliability test items?

Generally includes:

Cycle life

Different rate discharge characteristics

Different temperature discharge characteristics

Charging characteristics

Self-discharge characteristics

Different temperature self-discharge characteristics

Storage characteristics

Over-discharge characteristics

Internal resistance characteristics at different temperatures

Hightemperature test

Temperature cycle test

Drop test

Vibration test

Capacity distribution test

Internal resistance distribution test

Static discharge test ESD.

What are the battery safety test items?

Generally includes:

Internal short circuit test

Continuous charging test

Overcharge

High current charging

Forced discharge

Drop test

Drop test from a height

Penetration test

Plane crushing test

Cutting experiment

Shelf test in low pressure

Thermal abuse experiment

Water immersion experiment

Burning experiment

High pressure experiment

Baking experiment

Electronic furnace experiment.