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Lithium battery

A lithium battery and cell technology, applied in secondary batteries, battery pack components, circuits, etc., can solve problems such as potential safety hazards and large battery thickness.

Inactive Publication Date: 2019-10-01
江苏博煦电池科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the thickness of the battery is too large and there are potential safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1, such as figure 1 As shown, the lithium ion battery 1 of the present application includes a substantially rectangular case 10, a battery cell 14 (for example, JR (jacket cell)) disposed inside the case 10, and a pole embedded in the top end of the case 10. 12 and the tab 16 arranged between the pole 12 and the battery core 14 .

[0023] Specifically, one end of the pole 12 protrudes into the housing 10 and the other end protrudes out of the housing 10 . The tab 16 includes a base 160 extending directly from the battery core 14 , a connecting section 164 extending from the base and forming a connecting section 164 , and extending from the base 160 approximately in the middle and forming between the base 160 and the connecting section. 164 between the bent section 162. The connection section 164 and the bent section 162 are formed by pressing the cathode tab or the anode tab together, for example by merging and compacting by ultrasonic welding.

[0024] The c...

Embodiment 2

[0026] Embodiment 2, with reference to figure 2 and Figure 5 , in order to avoid repetition, only the differences from the above are described in detail. The lithium electron 1' of the second embodiment of the present application includes a pole 12', a first cell 14'a and a second cell 14'b oppositely arranged, and The first tab 16'a and the second tab 16'b are formed by extending and merging the two battery cells 14'b. The first tab 16'a has a first base 160'a and a first connecting section 161'a, and the second tab 16'b includes a second base 160'b and a second connecting section 161'b. The first base portion 160'a is opposite to the second base portion 160'b, and the first connecting section 161'a and the second connecting section 161'b overlap each other and are directly electrically connected to the bottom of the pole 12'. sexual connection. Thereby, it is possible to improve the mounting space of the battery and improve the reliability of the battery. In addition,...

Embodiment 3

[0027] Example 3, such as Image 6 As shown, wherein, the lithium battery 1 "includes a pole 12", a third electric cell 14"a and a fourth electric cell 14"b arranged side by side, and from the third electric cell 14"a and the fourth electric cell 14" ”b are extended and combined to form the third tab 16”a and the fourth tab 16”b. The third tab 16"a includes a third base portion 160"a, a third bent portion 162"a vertically connected to the third base portion 160"a, and a third bent portion 162"a vertically connected to the third bent section 162"a. Three connecting segments 161"a. The fourth lug 16"b has a fourth base portion 160"b, a fourth connecting section 161"b and a fourth bending section 162"b. Since its specific structure is the same as that of the third lug 16"a, it will not be described here. To repeat, the third connection section 161 ″a and the fourth connection section 161 ″b overlap each other and are directly electrically connected to the bottom of the pole 12 ...

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PUM

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Abstract

The invention relates to a lithium battery which comprises a casing, an electric core disposed inside the casing, a pole which is disposed on the casing and extends from the casing, a tab which comprises a base extending from the battery core and a connecting portion formed by extending from the base to be combined, and the connecting portion is directly and electrically connected to a bottom of the pole. According to the lithium battery provided by the present invention, the open area of the battery core can be increased, the heat generated during the charging and discharging of a large current is reduced, the influence on the performance of the battery core is reduced, and therefore, the battery reliability is improved. In addition, since the size in the thickness direction can be reduced, the realization of the miniaturization and thinning of a product is facilitated, and the space utilization rate is improved.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a lithium battery. Background technique [0002] At present, due to the advantages of high energy density, high power density, many cycle times, and long storage time, lithium-ion batteries are widely used in portable electronic devices such as mobile phones, digital cameras, and laptop computers, and are also used in street lamps, projectors, etc. Lighting tools such as lamps have broad application prospects. [0003] With the development of science and technology, people have put forward higher requirements for the performance of lithium-ion batteries, especially in small and medium-sized products, which itself has very high requirements for the size of the battery cell, especially the thickness direction of the battery cell. If the thickness direction size If it is larger, it is often difficult to achieve thinning of the product. In addition, the power requirements for hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26H01M10/0525
CPCH01M10/0525H01M50/531Y02E60/10
Inventor 乔在祥
Owner 江苏博煦电池科技有限公司