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Battery cell, battery and electric equipment

A cell and electrode assembly technology, applied in the field of battery manufacturing, can solve problems such as cell short circuit

Pending Publication Date: 2021-07-06
DONGGUAN POWERAMP TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the manufacturing process of multi-tab cells, such as in the tab folding process, there is a risk that the cathode tab is inserted into the cell and directly contacts the anode of the inner ring, resulting in a short circuit of the cell

Method used

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  • Battery cell, battery and electric equipment
  • Battery cell, battery and electric equipment
  • Battery cell, battery and electric equipment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0068] see figure 1 , the present application provides an electric core 1, the electric core 1 includes an electrode assembly 100 and a first insulating member 500, and the first insulating member 500 is arranged on the electrode assembly 100 for separating the electrode assembly 100 , to avoid the short circuit of the battery cell 1 during the manufacturing process of the battery cell 1 .

[0069] The overall outer surface of the electrode assembly 100 includes a first surface M, a first end surface K and a second surface N formed in sequence. Wherein, the first surface M and the second surface N are two opposite surfaces of the electrode assembly 100, and the first end surface K is formed between the first surface M and the second surface N , and the first end face K is perpendicular to the first surface M and the second surface N respectively.

[0070] The electrode assembly 100 includes a first pole piece 10 and a first pole lug 20 , one end of the first pole piece 20 is...

no. 2 example

[0094] see figure 2 The structure of the cell 1 provided in the second embodiment of the present application is substantially the same as that of the cell 1 in the first embodiment, the difference is that the surface of the first end 61a of the second insulator 600 is pasted on the first part O is the outermost surface of the second pole piece 30, and the other surface of the first end 61a of the second insulating member 600 is pasted on the outermost surface of the diaphragm 40 of the second part P. Wherein, the outermost second pole piece 30 of the first part O refers to the second pole piece 30 closest to the second part P in the first part O. The outermost membrane 40 surface of the second part P refers to the membrane 40 closest to the first part O in the second part P.

[0095] The structure of the cell 1 is the same as that in the first embodiment, the second end 61b of the second insulating member 600 is connected to the second end 51b of the first insulating member ...

no. 3 example

[0098] see image 3 The structure of the cell 1 provided by the third embodiment of the present application is substantially the same as that of the cell 1 in the first embodiment, the difference is that, along the first direction Z, the first end 61a of the second insulating member 600 Extending to the second surface N and sticking on the second surface N. The structure of the cell 1 is the same as that in the first embodiment, the second end 61b of the second insulating member 600 is connected to the second end 51b of the first insulating member 500 .

[0099] Specifically, the first end 51a of the first insulator 500 starts from the surface of the third straight section 25, extends around the second bent portion 24, and surrounds the second bent portion. The portion 24 faces away from the surface of the groove 241 . The first insulating member 500 continues to extend along the second straight section 23 and is disposed on the surface of the second straight section 23 unti...

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Abstract

A battery cell comprises: an electrode assembly, wherein the outer surface of the electrode assembly comprises a first surface, a first end face and a second surface in sequence, the first surface is opposite to the second surface, the electrode assembly comprises a first pole piece and a first pole lug, one end of the first pole lug is electrically connected with the first pole piece, the other end of the first pole lug penetrates out of the first end face, and in the thickness direction of the electrode assembly, the first tab extends towards the second surface and sequentially forms a first bending part and a second bending part, the bending directions of the first bending part and the second bending part are opposite, and a groove is formed in the second bending part in the direction facing the first surface; and a first insulating part, wherein the first end of the first insulating part surrounds the surface, deviating from the groove, of the second bending part, the second end of the first insulating part extends to be close to the first bending part from the second bending part, and the second end of the first insulating part exceeds the corresponding end part of the first bending part in the direction opposite to the penetrating-out direction of the first tab. The invention also relates to a battery and electric equipment. By adopting the battery cell, the condition of short circuit caused by contact between the tab and a pole piece with another polarity when the tab is inserted can be improved.

Description

technical field [0001] The present application relates to the technical field of battery manufacturing, and in particular to a battery cell, battery and electrical equipment. Background technique [0002] With the rapid development of the electronic industry, it has been integrated into people's lives. At the same time, as consumers' requirements are getting higher and higher, batteries that can be charged and discharged quickly have become one of the main concerns of consumers. Among them, the application of multi-tab is a way to achieve fast charging and discharging. The battery cell with multi-tab structure is used, and the pole pieces between them are connected in parallel through the tab. Compared with the conventional battery using a single tab, The internal resistance of the cell with the multi-tab structure is reduced, for example, it can improve the charging and discharging rate. [0003] However, in the manufacturing process of multi-tab cells, such as in the tab ...

Claims

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Application Information

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IPC IPC(8): H01M50/533H01M50/536
CPCY02E60/10
Inventor 程亚蕊
Owner DONGGUAN POWERAMP TECH LTD
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