A method for repairing laminated short-circuit cells
A technology of laminated and battery cells, which is applied in the repair field of laminated short-circuit batteries, to achieve the effects of reducing production costs, simplifying repair operations, and simple operations
Active Publication Date: 2018-05-29
CALB CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to provide a method for repairing laminated short-circuit cells that is easy to operate and does not cause additional damage to the cell
Method used
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Embodiment Construction
[0018] Embodiment of the repair method of laminated short-circuit cell of the present invention:
[0019] The laminated short-circuit battery cell in this embodiment is a Z-shaped laminated battery cell, including a positive electrode sheet, a negative electrode sheet, and a diaphragm arranged between the positive electrode sheet and the negative electrode sheet. The diaphragm is a continuous diaphragm, folded in a Z shape and A plurality of folding spaces for accommodating positive electrode sheets or negative electrode sheets are formed, and the positive electrode sheets and negative electrode sheets are arranged alternately in these folding spaces.
[0020] Such as figure 1 As shown, the embodiment of the repair method of laminated short-circuit cell of the present invention comprises the following steps:
[0021] 1) Disassemble the short-circuited battery so that the lugs are in a loose state, and use the following method to find the short-circuited electrode group 2: Use...
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Abstract
The invention relates to a method for repairing laminated short-circuit batteries, which belongs to the technical field of battery manufacturing. The method for repairing laminated short-circuit cells of the present invention includes: separating the short-circuited pole piece group from the normal pole piece group in the short-circuit battery cell, and superimposing the qualified pole piece group with the normal pole piece group to obtain a qualified battery cell ; The short-circuit pole piece group, the normal pole piece group and the qualified pole piece group all include diaphragms, and the pole pieces of the qualified pole piece group and the opposite pole pieces of the normal pole piece group do not contact each other. The method for repairing the laminated short-circuit cell of the present invention is to separate the short-circuit pole piece group in the short-circuit battery cell from the normal pole piece components in the short-circuit battery cell except for the short-circuit pole piece group, and then replace it with a qualified pole piece group Short-circuit the electrode group to form a new qualified battery cell, which is easy to operate and high in efficiency, and it is not easy to cause additional damage to the battery cell during the repair process, which reduces the battery production cost.
Description
technical field [0001] The invention relates to a method for repairing laminated short-circuit batteries, which belongs to the technical field of battery manufacturing. Background technique [0002] The high production cost of lithium-ion batteries is an important factor restricting its large-scale application. How to effectively reduce production costs has always been a difficult problem in the production and manufacturing of lithium-ion batteries. [0003] There are many reasons for the high cost of lithium-ion batteries, among which the low yield of batteries is an important factor leading to the high cost of lithium-ion batteries. There are also many reasons for the occurrence of unqualified batteries, among which the internal short circuit of the battery cell is the main reason, such as burrs on the pole piece or dust particles on the surface of the pole piece, etc. will cause the internal short circuit of the battery cell. If the short-circuit battery continues to be ...
Claims
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IPC IPC(8): H01M10/54
CPCY02W30/84
Inventor 梁梦伟李晓坡雷蕾张凌寒张振朋田鹏飞
Owner CALB CO LTD