A pitting abrasive tool for a large-capacity polymer lithium battery
A polymer and lithium battery technology, applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, climate sustainability, etc., can solve the problem of low space utilization, low efficiency of double-pit four-sided edge banding, and inability to enlarge the size, etc. problem, achieve the effect of reducing stretching, avoiding deformation and reducing damage
Active Publication Date: 2019-04-30
南通鼎鑫电池有限公司
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Problems solved by technology
[0004] In order to overcome the problems existing in the prior art that the size cannot be enlarged, the efficiency of the double-pit four-sided edge sealing mode is low, and the size and space utilization rate is low, the present invention provides a large-capacity polymer lithium electronic battery
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[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0031] The invention discloses a punching die for a large-capacity polymer lithium battery. The casing of the lithium battery adopts an aluminum-plastic composite film. A punching die is required in the punching process, and the punching die in the aluminum-plastic film forming machine is improved in this embodiment. The shell is made of aluminum-plastic composite film. The punching die is divided into a patrix and a lower die, and the patrix and the lower die are in relative positions; as Figure 8 As shown, the upper die includes a punch 5, an upper die base 1 and a hydraulic cylinder a; the hydraulic cylinder a includes a cylinder 4 and a piston rod 2, and the piston rod 2 is located insi...
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Abstract
The invention provides a punching die for a large-capacity polymer lithium battery. The punching die is divided into an upper die and a lower die, and the upper die and the lower die are in corresponding positions. The upper die includes a punch, an upper die Die base and hydraulic cylinder a; said hydraulic cylinder a includes a cylinder body and a piston rod, and the piston rod is arranged inside the cylinder body; said hydraulic cylinder a is installed in the middle of the bottom surface of the upper die; said punch is arranged on hydraulic cylinder a directly below; the lower mold includes a lower mold base, a hydraulic cylinder b and a cooling device; the upper surface of the lower mold base is a working plane, and the middle of the upper surface of the lower mold is provided with a punching pit, and the shape of the punching pit is a square The shape and dimensions of the punching pit are the same as those of the punch. A square frame is provided directly below the bottom of the punching pit; the cooling device is installed directly below the punching pit and is inside the square frame. The beneficial effect of the invention is that the depth of the punching hole can be changed according to the requirements of lithium battery casings of different specifications, so that the aluminum-plastic film can be quickly finalized after punching the hole.
Description
technical field [0001] The invention relates to the technical field of pitting abrasive tools for lithium batteries, in particular to a pitting abrasive tool for large-capacity polymer lithium batteries. Background technique [0002] With the further development of the new energy industry, especially the rapid development of the energy storage industry and the electric vehicle industry, higher requirements are placed on large-capacity lithium-ion batteries, such as lighter weight, higher specific energy, and better safety. , longer service life, better high-rate discharge performance, better heat dissipation performance, and convenient assembly, especially put forward higher requirements for the energy density and safety performance of large-capacity lithium-ion batteries. Existing high-capacity lithium-ion batteries that use polymer aluminum-plastic film shells have the following problems: (1) The depth of the aluminum-plastic film is insufficient, generally below 6mm, resu...
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IPC IPC(8): B29C51/30H01M10/058
CPCB29C51/30H01M10/058Y02E60/10Y02P70/50
Inventor 李中彦丁燕丽卢峰汤留俊张静
Owner 南通鼎鑫电池有限公司