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Battery

A battery and cell technology, which is applied in the repair/maintenance of battery pack parts, circuits, secondary batteries, etc., and can solve the problems of complex manufacturing process of plastic frame, liquid leakage, excessive gap, etc.

Active Publication Date: 2021-05-18
DONGGUAN NVT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the plastic frame packaging method solves a series of problems around the damage to the battery core, the manufacturing process of the plastic frame is complicated, and there are risks in the process of assembling the battery cell to the plastic frame, such as crushing, excessive gaps, Sharp edges and burrs lead to cell scratches and leakage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] ginseng Figure 1-5 , the battery 100 includes a cell 10 , a first protection body 20 , a flexible circuit board 30 , a printed circuit board 40 , a second protection body 50 and a protection portion 60 .

[0088] The first protection body 20 covers the top surface 101 of the battery cell 10 . The printed circuit board 40 is electrically connected to the battery cell 10 . The printed circuit board 40 is provided with the flexible circuit board 30 and located inside the first protection body 20 . The flexible circuit board 30 is partially exposed outside the first protection body 20 .

[0089] The battery core 10 is provided with tabs 11 . Correspondingly, the flexible circuit board 30 is provided with a connecting piece 301 . The connecting member 301 is connected to the tab 11 so as to realize an electrical connection between the battery core 10 and the printed circuit board 40 . Wherein, the first protective body 20 also completely covers the tab 11 .

[0090] I...

Embodiment 2

[0093] ginseng Image 6 The difference between Embodiment 2 and Embodiment 1 is that the second protective body 50 in Embodiment 2 further includes a third subsection 503 . The third subsection 503 covers part of the first middle region 1021 and is connected to the first subsection 501 .

[0094] Specifically, the first middle area 1021 includes a first subregion 1023 , a second subregion 1024 and a third subregion 1025 located between the first subregion 1023 and the second subregion 1024 . The third subsection 503 covers the third subregion 1025 .

Embodiment 3

[0096] ginseng Figure 7A The difference between embodiment 3 and embodiment 1 is that the second protection body 50 in embodiment 3 further includes five fourth subsections 504 . Five fourth subsections 504 are arranged at intervals in the first middle area 1021 and connected to the first subsections 501 .

[0097]Specifically, the first middle area 1021 includes a first subregion 1023 , a second subregion 1024 and a third subregion 1025 located between the first subregion 1023 and the second subregion 1024 . Wherein, five fourth subsections 504 are arranged at intervals in the third subregion 1025 . There are gaps 1026 between adjacent fourth subsections 504 . Wherein, the gaps 1026 extend toward the corresponding first subsections 501 to separate the first subsections 501 .

[0098] In other embodiments, the number of the fourth subsections 504 can be adaptively adjusted according to the size of the bottom surface 102 and other design requirements.

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Abstract

A battery comprises a battery cell, a first protection body, a printed circuit board, a flexible circuit board and a second protection body. The battery cell comprises a top surface and a bottom surface back to the top surface; the first protection body covers the top surface. The printed circuit board is electrically connected to the battery cell. The flexible circuit board is arranged on the printed circuit board and located in the first protection body. The flexible circuit board is partially exposed outside the first protection body. The second protection body covers part or all of the bottom surface.

Description

technical field [0001] The present application relates to a battery. Background technique [0002] For the large-capacity lithium battery products developed in recent years, due to the special requirements for battery capacity, the battery cells need to be developed in a large thickness and irregular shape, which brings challenges to the design and manufacture of the battery cells. In the process of cell packaging, in order to ensure the electrical connection of the cell, the positive and negative tabs are usually drawn out from the winding layer of the cell, and extend out of the aluminum-plastic film package of the cell for a certain length, and then cut by shaping Finally, weld it with the protective plate to realize the electrical connection between the protective plate and the battery core, then bend the positive and negative tabs so that the protective plate is placed flat on the deep pit surface of the battery core, and then protect it by attaching insulating tape Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/20H01M50/284H01M50/242H01M10/42
CPCH01M10/42Y02E60/10
Inventor 姚明高
Owner DONGGUAN NVT TECH
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