Safe lithium ion battery

A lithium-ion battery and safety technology, applied in secondary batteries, battery pack parts, non-aqueous electrolyte storage batteries, etc., can solve problems such as unreasonable structural design, achieve low production cost, reasonable structural configuration, and reduce production costs Effect

Inactive Publication Date: 2014-07-09
成都鼎恒新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of unreasonable structural design of current lithium-ion batteries, which cannot all pass the seven tests of short-circuit, over-discharge, over-charge, drop, heating, acupuncture and extrusion, and provide a battery that is not only simple in structure, but also able to A safe lithium-ion battery that passes all the above seven tests at one time

Method used

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Embodiment

[0028] Such as Figure 1-7 As shown, the structure of the present invention includes a casing 11, a loam cake 3 matched with the casing 11, a positive pole 1, a negative pole 2 and an air release valve 4 arranged on the loam cake 3, which are connected with the positive pole 1 and the negative pole respectively. 2 connected positive inner bus bar 5 and negative inner bus bar 6, and a subunit 12 arranged inside the housing 11 and connected to the positive inner bus bar 5 and the negative inner bus bar 6.

[0029] In order to reduce the production cost as much as possible and ensure the effect of use, the shell 11 and the upper cover 3 are both made of 17% reinforced glass fiber through integral injection molding, and the inner cavity size of the shell 11 is preferably made to be 45×160× 240mm, the cavity size of the inner shell 2 is preferably made to be 42×150×200mm, wherein the wall thickness of the outer shell 1 is 6.6mm, and the wall thickness of the inner shell 2 is 1.2mm....

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Abstract

The invention discloses a safe lithium-ion battery, which is characterized in that it comprises an outer shell (11), an inner shell (20) arranged inside the outer shell (11), and a positive pole (1) sealingly connected with the outer shell (11). and the upper cover (3) of the negative pole (2), the vent valve (4) arranged on the upper cover (3) and the positive internal confluence respectively connected with the positive pole (1) and the negative pole (2) bar (5) and negative inner bus bar (6), and a sub-unit (12) connected to the positive inner bus bar (5) and the negative inner bus bar (6) is also arranged inside the inner shell (20) . The present invention not only has a very simple overall structure and low manufacturing cost, but also has a positive inner bus bar and a negative inner bus bar, so it can ensure that the heat dissipation of the pole pieces in the battery cell of the present invention is very balanced, and can pass through short circuit, over discharge, and over charge. , drop, heating, acupuncture and extrusion seven tests.

Description

technical field [0001] The invention relates to a lithium ion battery, in particular to a safe lithium ion battery. Background technique [0002] Lithium-ion battery production technology has matured, and China has certain advantages in the direction of lithium-ion power battery technology. China is determined to become the world's leader in electric vehicles, and the number of pure electric vehicles will also rank first in the world in the future. Lithium-ion battery is especially suitable for mobile vehicle power supply, and is the preferred battery for vehicle power supply. [0003] However, due to the unreasonable structural design of lithium-ion batteries currently on the market, all existing lithium-ion batteries cannot pass through short circuit, over-discharge, over-charge, drop, heating, acupuncture and extrusion. This test has seriously hindered the development and progress of lithium-ion technology. Contents of the invention [0004] The purpose of the present...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/20H01M2/30H01M2/34H01M10/058H01M10/0525
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 黄河清
Owner 成都鼎恒新能源有限公司
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