Lithium ion battery synchronous lamination diaphragm cutting device and lithium ion battery manufacturing method

A lithium-ion battery cutting technology, applied to secondary batteries, circuits, electrical components, etc., can solve problems such as deviation, high repair rate, poor alignment, etc., to ensure quality, reduce repair rate, and reduce operation effect of difficulty

Pending Publication Date: 2021-08-24
SHENZHEN HONCELL ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the winding process, the winding needles generally used are prismatic, oval, and circular. Since the wound positive electrode sheet, negative electrode sheet, and film are all flexible strips, during the winding process, due to the tension control There are many strips and coils, and there are often deviations, poor alignment, etc., and the repair rate remains high.

Method used

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  • Lithium ion battery synchronous lamination diaphragm cutting device and lithium ion battery manufacturing method
  • Lithium ion battery synchronous lamination diaphragm cutting device and lithium ion battery manufacturing method
  • Lithium ion battery synchronous lamination diaphragm cutting device and lithium ion battery manufacturing method

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Embodiment 1

[0033] see figure 1 , the present invention provides a lithium-ion battery synchronous bonding diaphragm cutting device through improvement, including a support plate 1 and a cutting device 9, a first bracket 2 is installed on the left side of the top of the support plate 1, and the first bracket 2 has two upper and lower sides. The separator support roller 3 and the battery pole piece support roller 4 are respectively installed on the side, the second bracket 5 is installed in the middle of the top of the support plate 1, and the support roller 6 and the winding roller 7 are installed on the top of the left and right sides of the inner side of the second bracket 5. The middle part of the inner bottom end of the second bracket 5 is equipped with a pressure roller 8, and the right end of the second bracket 5 is provided with a cutting device 9, and the bottom end of the cutting device 9 is fixedly connected with the support plate 1, and the pressure roller 8 is provided with tw...

Embodiment 2

[0044] Another aspect of the present invention is to protect the lithium-ion battery manufacturing method using the above-mentioned lithium-ion battery synchronously laminating diaphragm cutting device, comprising the following steps:

[0045] S1. Preparation of the positive electrode sheet: take the strip-shaped positive electrode original roll and the first separator, use the above-mentioned lithium-ion battery synchronously laminating separator cutting device, and attach the first separator to the positive electrode original roll and according to the predetermined length Cutting to obtain the positive electrode sheet of the first shape;

[0046] S2. Preparation of the negative electrode sheet: Take the strip-shaped negative electrode original roll and the second separator, use the above-mentioned lithium-ion battery synchronously laminating the separator cutting device, attach the second separator to the negative electrode original roll and follow the schedule Length cuttin...

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Abstract

The invention discloses a lithium ion battery synchronous lamination diaphragm cutting device and a lithium ion battery manufacturing method. The device comprises a supporting plate, a first support, an isolation film supporting roller, a battery pole piece supporting roller, a second support, a supporting roller, a winding roller, a pressing roller and a cutting device. The pressing roller is arranged on the supporting frame, and the cutting device is arranged; a driving mechanism is arranged at the front end of the cutting device, the left side and the right side of the rear end of the driving mechanism are connected with a pressing roller and the cutting mechanism respectively, the pressing roller and the cutting mechanism are driven at the same time, the pressing roller rotates to attach an isolating membrane to a battery pole piece and convey the battery pole piece, and a cutter of the cutting mechanism reciprocates to cut the battery pole piece. The device has the advantages of being high in process operability, good in quality consistency and high in energy density.

Description

technical field [0001] The invention relates to the technical field of battery production, in particular to a lithium-ion battery synchronous laminating diaphragm cutting device and a lithium-ion battery manufacturing method. Background technique [0002] The winding process is an important process in the production of lithium-ion batteries. The specific process is to roll the pole piece after slitting and cutting into a core shape wrapped by layers through the rotation of the winding needle. The normal wrapping method is Separator, positive electrode, separator, negative electrode. Its specific winding process is as follows: Image 6 shown in Image 6 Among them, 100 is the positive electrode sheet unwinding shaft, 200 is the negative electrode sheet unwinding shaft, 300 is the diaphragm unwinding shaft, and 400 is the winding needle. [0003] During the winding process, the winding needles generally used are prismatic, oval, and circular. Since the wound positive electrod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0587B26D1/08B26D7/27
CPCB26D1/085B26D7/27H01M10/0587Y02E60/10Y02P70/50
Inventor 范海满肖文杰汪汉勤吴银华师贵荣
Owner SHENZHEN HONCELL ENERGY CO LTD
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