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Manufacturing device and method for lithium-ion laminated battery

A manufacturing device, lithium ion technology, applied in the direction of electrolyte battery manufacturing, secondary battery, final product manufacturing, etc., can solve the problem of difficult to ensure positioning accuracy, difficult to grasp, etc., to improve production efficiency, good performance, stacking positioning high precision effect

Active Publication Date: 2019-01-08
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both the stacking method and the four-layer unit stacking method require multiple manipulators to work together, but because the diaphragm or pole piece is a flexible body, it is not easy to grasp, and the positioning accuracy during placement is difficult to guarantee

Method used

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  • Manufacturing device and method for lithium-ion laminated battery
  • Manufacturing device and method for lithium-ion laminated battery
  • Manufacturing device and method for lithium-ion laminated battery

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Embodiment Construction

[0057] The present invention will be further described below in conjunction with accompanying drawing:

[0058] figure 1 A three-dimensional structural schematic diagram of a four-layer unit 1 of a lithium-ion laminated battery in the present invention is shown. The four-layer unit 1 is formed by thermally compounding after the diaphragm 11-negative electrode sheet 12-diaphragm 11-positive electrode sheet 13 is laminated, wherein the negative electrode sheet 12 has a negative tab 121, and the positive tab 13 has a positive tab 131. Since the separator 11, the negative electrode sheet 12, and the positive electrode sheet 13 have different sizes, the centers of the negative electrode sheet 12 and the positive electrode sheet 13 must be kept aligned when stacking the sheets.

[0059] figure 2 It is a schematic diagram of the structure of lithium-ion laminated battery cells in the present invention. The cells of laminated batteries are composed of several four-layer units 1 and...

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Abstract

The invention discloses a manufacturing device and a manufacturing method of a lithium-ion laminated battery. The device includes a pole piece cutting and stacking mechanism, a hot-pressing roller, a unit feeding mechanism and a unit stacking mechanism for stacking four-layer units to a predetermined number of layers. The raw material belt is formed into a laminated belt by the pole piece cutting and stacking mechanism, and then sent to the hot-pressing roller, which is thermally compounded by the hot-pressing roller to form a unit material belt, and then sent to the unit feeding mechanism, which is controlled by the unit feeding mechanism. The unit strip is cut into four-layer units and transported to the unit stacking mechanism. The invention can conveniently realize the slicing, stacking, hot pressing and diaphragm cutting processes of the four-layer unit, the stacking method of the four-layer unit is simple and efficient, can be stacked while pressing, and has high stacking positioning accuracy. The recycling of multiple stacking stations will not cause stacking waiting time, which greatly improves production efficiency.

Description

technical field [0001] The invention relates to the technical field of lithium-ion batteries, in particular to a manufacturing device and method for lithium-ion laminated batteries. Background technique [0002] At present, lithium-ion battery cells mainly adopt two processes of winding and stacking. Since the cross-section of the winding type cell is circular or oval, the expansion and contraction of the electrode will cause the gap between the electrodes during the charging and discharging of the battery. The gap between them is not uniform, and the electrode active material is easy to fall off at the bend, which will lead to uneven internal reaction, which will directly cause the performance of the battery to decline. At the same time, there are also disadvantages such as long pole pieces, large internal resistance of the battery, which are not conducive to high-rate charge and discharge, low specific power, and low space utilization. [0003] Compared with the tradition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/058H01M10/0525
CPCH01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 高冲左龙龙许涛李干钱涛
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY
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