What factors should be considered when designing a lithium battery pack?

The following factors need to be considered in the design of lithium-ion battery packs:
1. Explosion-proof: Once the thermal runaway of the lithium-ion battery pack occurs, the air pressure in the battery pack PACK will rise sharply. At this time, the battery pack may explode, so the PUW explosion-proof valve becomes a breakthrough, which can release the pressure in time and quickly.
2. Maintain the air pressure balance inside and outside the lithium-ion battery pack: Because the temperature of the battery pack will change during charging and discharging, the air pressure inside the battery pack will change, and the PUW explosion-proof valve can breathe without leaking, so it can maintain the air pressure in the pack It has always been the same as the outside world.
3. Consider the design of the lithium-ion battery pack PACK management system: Overshoot, over-discharge, over-temperature, detection accuracy, battery balance, etc. should be considered. To ensure the safety and reliability of the battery, it must go through reasonable design and market confirmation.
4. Consider the mechanical structure design of the energy storage lithium-ion battery pack: strength, shock resistance, heat dissipation/heating, waterproof, dustproof, etc. should be considered; electrical design, safety regulations, EMC safety regulations and other factors should be considered.
5. Waterproof and shockproof in the structure of the lithium-ion battery pack: After the lithium battery cell is soaked, the positive and negative poles are short-circuited and continuously discharged, which will cause damage to the internal structure of the battery. The waterproof and dustproof performance should be considered in the design of the battery pack.
6. Material selection for lithium-ion battery pack structure: high-voltage insulation performance is one of the most important technical requirements for battery pack structural design. The battery pack structure is loaded with various lithium-ion batteries. After the batteries are grouped, the total voltage and total current will be very large. Plastic has good high-voltage insulation. Generally, nylon with high strength and plasticity can be used as a raw material. 5% to 45% glass fiber is added to the material, and GF reinforcement can improve the structural strength and vibration resistance.