Novel lithium ion polymer battery thickness control device

Abstract

The invention discloses a novel lithium ion polymer battery thickness control device. The novel lithium ion polymer battery thickness control device comprises a cold press and a cold pressing template (4), wherein a plurality of hollowed-out grooves (40) are formed on the cold pressing template (4); batteries of which the thickness needs to be controlled are placed in the grooves (40); and the cold press performs cold-pressing formalization on the batteries. In the novel lithium ion polymer battery thickness control device disclosed by the invention, during formation and subsequent processing, the thickness of the lithium ion polymer batteries can be controlled well by performing cold-pressing formalization on the batteries placed on the cold pressing template battery without performing battery clamping operation, so that the capacity of each battery is improved, the quality qualification rate and the whole property of each battery are guaranteed, the production efficiency of the batteries is improved effectively, the production cost of each battery is reduced and important production practice significance is achieved.

Description

technical field [0001] The invention relates to the technical field of battery production, in particular to a novel lithium-ion polymer battery thickness control device. Background technique [0002] At present, lithium-ion batteries have the advantages of high specific energy, many cycle times, and long storage time. They are not only widely used in portable electronic devices such as mobile phones, digital cameras, and laptop computers, but also widely used in electric vehicles and electric bicycles. As well as large and medium-sized electric equipment such as electric tools, the requirements for the quality pass rate of lithium-ion batteries are getting higher and higher. [0003] With the continuous research and development of high-end products, new products often require increased capacity while maintaining the same size, which puts more stringent requirements on the size of lithium-ion polymer batteries, especially in terms of thickness. Thickness is an important dim...

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Problems solved by technology

[0006] But, for above-mentioned traditional lithium-ion battery control thickness method, because the operation of controlling thickness is finished manually by battery production worker completely, the difficulty of battery production worker's operation increases when clamping unloading battery and upper and lower equipment; And, each battery requires At least 4 clamping and unloading operations, the efficiency of the battery production workers is too low, which seriously affects the overall production efficiency of the battery

[0007] In addition, the battery clamped by the dovetail clip is very prone to external short circuit when going up and down the equipment. Because the battery is clamped with a metal dovetail clip, and the auxiliary clip and dovetail clip occupy additional equipment space, the two poles of the battery are easy to touch. To the dovetail clip, an external short circuit occurs, and the tabs are prone to breakage when the battery is put on and off at the same time;

[0008] In view of the fact that the general lithium-ion polymer battery has an air bag when it is formed, if the battery is clamped with a dovetail clip when the battery is mounted on the device, the air bag must be bent, and the relatively fragile packaging part is easy to crack, which causes poor cracking of the foot; Moreover, the battery is clamped by multiple dovetail clamps, and the electrolyte is not easy to enter the clamped pole pieces. It is not conducive to the full infiltration and absorption of the electrolyte by the pole pieces during formation and post-processing, and it is easy to produce lithium precipitation in some areas. Therefore, it has a negative impact on battery capacity and cycle performance, and affects the overall performance of the battery.

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