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A battery, a battery pack, an electric vehicle, and an electrical appliance

A battery pack and battery technology, applied in the field of power supply, can solve problems such as battery short circuit, battery heat generation, battery explosion, etc.

Active Publication Date: 2020-09-29
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the battery inside the car is hit by heavy objects, needles and other faults, a short circuit may occur inside the battery, resulting in a large amount of heat generated inside the battery, which may lead to serious accidents such as battery explosion

Method used

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  • A battery, a battery pack, an electric vehicle, and an electrical appliance
  • A battery, a battery pack, an electric vehicle, and an electrical appliance
  • A battery, a battery pack, an electric vehicle, and an electrical appliance

Examples

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Embodiment 1

[0085] The battery of embodiment 1 is as figure 1 shown.

[0086] The battery includes a cell body 10 (in this embodiment, the cell body 10 is a cell with a wound electrode structure, referred to as a winding core) and tabs (a positive tab and a negative tab). The lug is electrically connected to the cell body 10 and protrudes from the cell body 10 , wherein the part where the tab protrudes from the cell body 10 is the tab extension 20 .

[0087] Further, the battery also includes a cell casing 30, which encloses the cell body 10 and a certain length of the tab extension 20, and a certain length of the tab extension 20 extends to the cell outside the housing 30. Wherein, the tab protruding part 20 packaged in the cell casing 30 is an inner tab 21 , and the tab protruding part protruding outside the cell casing 30 is an external tab 22 . The dotted line aa' is the top seal line and also the dividing line between the inner tab and the outer tab. The cell casing is filled wit...

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Abstract

The invention relates to a battery, a battery pack, an electric vehicle and an electric appliance. Wherein, the battery includes a cell body; tabs, the tabs are electrically connected to the cell body and protrude from the cell body, wherein the part of the tab protruding from the cell body is the tab protruding part; the cell shell, which encapsulates the cell body and a tab extension of a certain length, wherein the tab extension that is packaged in the cell shell is an internal tab; and an insulating and heat-conducting layer, the insulating and heat-conducting layer is located inside the cell casing and covers part or all of the inner tab. The battery has improved impact resistance.

Description

technical field [0001] The invention relates to the field of power sources, in particular to a battery, a battery pack, an electric vehicle and an electrical appliance. Background technique [0002] Electric vehicles mainly use electricity instead of oil to drive the power system, including pure electric vehicles, hybrid electric vehicles and plug-in hybrid electric vehicles. [0003] Lithium-ion batteries have the advantages of high operating voltage and high energy density, and are currently widely used as power sources for electric vehicles. Cars may encounter various complicated situations during driving, such as bumps, collisions, etc. When the battery inside the car is hit by heavy objects, needles and other failures, a short circuit may occur inside the battery, resulting in a large amount of heat generated inside the battery, which may lead to serious accidents such as battery explosion. Contents of the invention [0004] The technical problem solved by the inven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0525H01M10/0587H01M10/653H01M10/654H01M10/625H01M10/613H01M2/26
CPCY02E60/10Y02P70/50
Inventor 钟宽吴西燚周志红
Owner GREE ELECTRIC APPLIANCES INC