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Current collector assembly, battery cell and battery pack

A technology for current collectors and components, applied in battery pack components, electrode carriers/current collectors, circuits, etc., can solve the problems of vulnerable welding parts, and achieve the effect of avoiding danger, ensuring reliability, and improving safety performance.

Pending Publication Date: 2021-09-21
XIAMEN HAICHEN NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After welding, the welded part is vulnerable to damage

Method used

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  • Current collector assembly, battery cell and battery pack
  • Current collector assembly, battery cell and battery pack
  • Current collector assembly, battery cell and battery pack

Examples

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Embodiment Construction

[0060]Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0061] Refer below Figure 1-Figure 31 A current collector assembly 200 according to an embodiment of the first aspect of the present invention is described.

[0062] Such as Figure 1-Figure 31 As shown, the current collector assembly 200 according to the embodiment of the first aspect of the present invention includes: a current collector 202 and a conductive connection assembly 100 .

[0063] Specifically, the current collector assembly 200 includes: a current collector 202 and a conductive connection assembly 100, the curren...

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Abstract

The invention discloses a current collector assembly, a battery cell and a battery pack. The current collector assembly comprises a current collector, wherein the current collector comprises a plurality of layers of tabs, a conductive connection assembly comprises a protection plate and a connection plate, the protection plate is arranged on one side of the plurality of layers of tabs in the thickness direction, and the connection plate is arranged on the other side of the plurality of layers of tabs in the thickness direction; and one of the connecting plate and the protection plate is provided with bulges, the bulges penetrate through the plurality of layers of tabs through high-frequency vibration and are electrically connected with the plurality of layers of tabs, and the frequency of the high-frequency vibration is in a range of 15KHz to 40KHz. According to the current collector assembly, the bulges pierce the plurality of layers of tabs through high-frequency vibration, the high-frequency vibration acts on the contact surfaces of welded objects, the surfaces of the two objects rub against each other to generate heat, fusion between molecular layers is formed, and then the welding speed between the bulges and the plurality of layers of tabs is increased; by arranging the protection plate covering the bulges, the top parts of the bulges are prevented from exceeding a protective cover, the bulges are prevented from being damaged, and the service life of the current collector assembly is prolonged.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a current collector assembly, a battery cell and a battery pack. Background technique [0002] It is pointed out in the related art that the single-layer tab is welded with copper foil on both sides of the composite tab by means of ultrasonic roll welding, and the welded copper foil is welded on the soft connection. In this welding method, each layer of tabs needs to be welded, thus increasing the welding cost and the material cost of the copper foil. After welding, the welded part is vulnerable to damage. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes a current collector assembly, a battery cell and a battery pack. The current collector assembly is ingeniously designed, which can increase the welding speed and protect the protrusions from dama...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/536H01M50/528H01M50/54H01M4/64
CPCH01M50/536H01M50/528H01M50/54H01M4/64Y02E60/10
Inventor 周龙吴聪苗郭敏蓝金花
Owner XIAMEN HAICHEN NEW ENERGY TECH CO LTD
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