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Negative electrode tab structure of three-electrode soft package battery cell and three-electrode soft package battery

A soft pack battery, three-electrode technology, applied in structural parts, battery pack components, circuits, etc., can solve problems such as poor cell packaging, achieve the effect of ensuring quality yield and reducing the risk of damage

Pending Publication Date: 2021-11-30
ENVISION DYNAMICS TECH (JIANGSU) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the reference electrode is directly packaged in aluminum-plastic film PP glue, it may cause poor battery packaging

Method used

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  • Negative electrode tab structure of three-electrode soft package battery cell and three-electrode soft package battery
  • Negative electrode tab structure of three-electrode soft package battery cell and three-electrode soft package battery
  • Negative electrode tab structure of three-electrode soft package battery cell and three-electrode soft package battery

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0027] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...

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Abstract

The invention belongs to the technical field of lithium ion batteries, and discloses a negative electrode tab structure of a three-electrode soft package battery cell and the three-electrode soft package battery. The negative electrode tab structure of the three-electrode soft package battery cell comprises a first metal piece, a second metal piece, a tab film and a reference electrode, wherein the first metal piece and the second metal piece are arranged on the tab film in parallel and at intervals, the two ends of the first metal piece and the two ends of the second metal piece extend out of the tab film, and the reference electrode is electrically connected with one end of the second metal piece. The reference electrode is used as part of the negative electrode tab structure of the three-electrode soft package battery cell, so that the reference electrode is completely arranged in the battery cell, the risk that the reference electrode is exposed outside the battery cell and damaged is reduced, and the influence on the packaging reliability of the battery cell when the reference electrode is packaged in aluminum plastic film PP glue is also eliminated.

Description

technical field [0001] The invention relates to the technical field of lithium-ion batteries, in particular to a negative electrode tab structure of a three-electrode soft-pack battery cell and a three-electrode soft-pack battery. Background technique [0002] Lithium-ion batteries have attracted much attention due to their high energy density and long cycle life. At present, according to different packaging methods, lithium-ion batteries can be divided into three categories: hard-shell batteries, cylindrical batteries and soft-pack batteries. Soft-pack batteries are favored by the market because of their advantages such as simple assembly routes and lighter mechanical parts. [0003] In order to study the charging capacity of the soft-packed battery, the charging capacity of the soft-packed battery is generally analyzed by monitoring the potential between the negative electrode and the reference electrode during the charging and discharging process of the three-electrode b...

Claims

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Application Information

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IPC IPC(8): H01M50/533H01M50/536H01M50/569
CPCH01M50/533H01M50/536H01M50/569Y02E60/10
Inventor 王历川
Owner ENVISION DYNAMICS TECH (JIANGSU) CO LTD
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