Electrochemical device and electronic device

A technology of electrochemical and conductive parts, applied in the direction of circuits, electrical components, battery pack components, etc., can solve the problem of many solder joints, achieve the effect of reducing solder joints, simplifying the process, and reducing the risk of puncture

Pending Publication Date: 2021-06-15
DONGGUAN POWERAMP TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present application provides an electrochemical device and an electronic device to at least so

Method used

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  • Electrochemical device and electronic device
  • Electrochemical device and electronic device
  • Electrochemical device and electronic device

Examples

Experimental program
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Effect test

no. 1 example

[0041] Please also refer to Figure 1 to Figure 5 As shown, the electrochemical device 30 includes a first casing 31 , an electrode assembly 32 , a protector 33 , a first tab 341 and a second tab 342 .

[0042] The electrode assembly 32 is located inside the first case 31 . The electrode assembly 32 can be formed by winding or stacking several pole pieces. These pole pieces are arranged in layers. One end of the first tab 341 and the second tab 342 extend into the first shell 31 and are aligned with the corresponding polarity. The other ends of the first tab 341 and the second tab 342 protrude from one side of the first housing 31 respectively.

[0043] According to the design that the electrochemical device 30 has positive and negative polarities, the pole piece of the electrode assembly 32 includes a positive pole piece and a negative pole piece and a separator arranged between the positive pole piece and the negative pole piece. Adaptively, the first tab 341 and the second...

no. 2 example

[0063] To facilitate description and distinguish differences between various embodiments, structural elements with the same name are identified with the same reference numerals herein. On the basis of the description of the first embodiment, but different from it, please also refer to Figure 8 , Figure 9 , Figure 10 , Figure 11 with Figure 12 In this embodiment, the electrochemical device 30 is not provided with the first tab 341 , and the first conductive member 332 of the protector 33 extends into the first housing 31 and is electrically connected to the electrode assembly 32 . It can be seen that this embodiment integrates the first conductive member 332 and the first tab 341 of the first embodiment, and the first conductive member 332 of this embodiment is not only the first conductive member 332 of the protector 33, but also Used as the first tab 341 .

[0064] In one implementation, if the direction in which the first conductive member 332 extends from the outs...

no. 3 example

[0072] On the basis of the description of the first embodiment, but different from it, please also refer to Figure 13 with Figure 14 , in this embodiment, the direction in which the first conductive member 332 protrudes from the second housing 331 is the same as the direction in which the second conductive member 333 protrudes from the second housing 331 . It should be understood that in Figure 13 In the state shown, the first conductive member 332 protrudes from the second housing 331 along the negative direction of the z-axis, and the second conductive member 333 protrudes from the second housing 331 along the negative direction of the z-axis and then faces the second shell The body 331 is turned over at a certain angle, and the third conductive member 343 is welded to the second conductive member 333 and followed by the second conductive member 333 to be turned over synchronously.

[0073] Such as Figure 14 As shown, when the electrode assembly 32 is not overheated, ...

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PUM

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Abstract

The invention discloses an electrochemical device and an electronic device. A first conductive part of a protector extends into a first shell and is electrically connected with an electrode assembly, or a first tab electrically connected with the electrode assembly extends from the inside of the first shell to the outside of the first shell and is connected with the first conductive part; the protector and the electrode assembly are electrically connected by multiplexing the existing first conductive part and/or the first tab; and welding spots are few, so that timely action of the protector is facilitated, the risk that the shell is punctured can be reduced, and the safety performance of the electrochemical device and the electronic device is improved.

Description

technical field [0001] The present application relates to the field of battery protection, in particular to an electrochemical device and an electronic device. Background technique [0002] Charging and discharging of the battery under abnormal use will cause the temperature to rise, and the battery protector cuts off the current to ensure safe use. In a traditional battery, when the protector is electrically connected to the electrode assembly, the tab is electrically connected to the electrode assembly. One end of the protector is welded to the tab through a metal sheet, and the other end is welded to another metal sheet as the output end of the battery. , when the battery has a safety risk, such as the temperature of the electrode assembly is too high, the heat is conducted to the protector, and the protector acts to cut off the current between the metal sheets at both ends, so that the battery stops outputting current. For this structure, there are multiple solder joint...

Claims

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Application Information

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IPC IPC(8): H01M50/536H01M50/581
CPCY02E60/10
Inventor 李雪蔡光兰
Owner DONGGUAN POWERAMP TECH LTD
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