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How to Design the Internal Structure of a Safe Lithium Battery Pack?

Jan. 06, 2021

As an Emergency Lighting Battery Supplier, share it with you.

All lithium battery pack failures are caused by short-circuit faults. The conditions that lead to short-circuit faults experience overcharge, overdischarge, overcurrent, overtemperature, etc., all caused by the internal structure of the lithium battery. The positive and negative levels of the lithium battery pack should be kept clean. The electrolyte and diaphragm of the lithium battery should be crystallized when traveling. However, during the processing, the electrolyte and diaphragm of the lithium battery cannot avoid being stained with metal material dust, copper or aluminum Platinum and other debris.

Lithium-Ion Battery

Lithium-Ion Battery

Lithium battery will over-temperature when it is not in moderate application (overcharging, power loss, overcurrent) or in extreme natural environment (excessive temperature). The slag will get rid of the quiet condition of normal temperature, and make it in hotter Thermal movement of the indoor space of the lithium battery electrolyte. Next, if the debris is close to the diaphragm, the hot debris will harm the isolation of the diaphragm and cause a short-circuit failure. Therefore, now we have a high polymer lithium battery, using a colloidal solution electrolyte solution to replace the liquid electrolyte solution, which can reduce the probability of short-circuit failure.

Lithium battery pack principle: Lithium battery pack is a kind of secondary battery (rechargeable battery). The key to its work is to store and release kinetic energy through the crossover and deintercalation of lithium-ion batteries between positive and negative.

In the whole process of battery charging, the lithium ion battery will be caused in the positive stage of the rechargeable battery, and the resulting lithium ion battery will enter the negative stage according to the lithium battery electrolyte. Carbon as a negative stage has a sheet structure with many microporous plates, so that negative lithium-ion batteries are placed in the carbon microporous plate. The more lithium-ion batteries are inserted, the battery charging capacity will be improved. Bigger. Similarly, when the rechargeable battery is charged and discharged, the lithium ion battery placed in the carbon layer of the negative stage is also taken off and moved back to the positive stage again. The more positive lithium-ion batteries, the larger their volume;

The basic principles of the composition of lithium battery packs.

1. Positive structure. Shape memory alloy 4 (lithium iron phosphate) + conductive agent (acetylene black) + adhesive (PVDF) + liquid collector (aluminum platinum).

2. Negative structure. High-purity graphite + conductive agent (acetylene black) + adhesive (PVDF) + negative current collector (copper pond).

The lithium iron phosphate battery pack is structurally stable during the charging and discharging process of lithium.

Our company also has Lithium-Ion Battery on sale, welcome to contact us.

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