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　　A positive pole material:

　　In terms of the safety of the material itself, thermal stability linio2

　　Secondly, from the perspective of the theoretical capacity of the positive target and the actual performance, the more lithium ion without dehydration. The more likely to generate the crystal when it is charged, the piercing septum causes a short circuit. The smaller the theoretical value and the actual value, the higher the safety. The lithium lithium 270-140

　　B lithium battery diaphragm: The thermal closure of the diaphragm has a great impact on the safety of the battery. When the temperature exceeds 120-135 degrees, if the diaphragm does not have a closed hole, the battery continues to rise, the internal pressure increases to the limit, and the battery will explode. If the temperature is too high, the diaphragm will melt, which will cause a short circuit of the battery, which requires a high melting point.

　　C lithium battery electrolyte: The electrolyte is a conductive role in the battery, and at the same time, it must play a protective role. When the charging voltage reaches a certain value, it forms a complex and forms a large area of disconnection inside the battery to make positive positive. The negative electrode decreases through the current and the battery temperature decreases.

　　D pole ear (aluminum nickel belt): When designing, maybe everyone does not think much about this factor. In fact, polar ear is a bridge connecting inside and outside the battery. When a short circuit, it will bear a large current. When the current density exceeds the maximum current density of the polar ear, a large amount of heat will be generated, and the internal temperature of the battery increases and the internal pressure increases.

　　E shell: Steel shell aluminum shell soft bag, material storage high -pressure capacity comparison: steel shell

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