A kind of aluminum shell type lithium-ion power battery

A power battery and lithium-ion technology, which is applied in the field of aluminum-shell lithium-ion power batteries, can solve problems such as slowness and difficulty in detection, and achieve the effect of improving safety performance

Active Publication Date: 2017-05-03
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metal shell of the negative short-circuited battery is under high voltage, which is prone to electrochemical corrosion, and electrochemical corrosion is a slow process, which is not easy to be detected during the production process.

Method used

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  • A kind of aluminum shell type lithium-ion power battery
  • A kind of aluminum shell type lithium-ion power battery

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Experimental program
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Effect test

Embodiment Construction

[0017] like figure 1 As shown, the embodiment of the present invention provides an aluminum case type lithium ion power battery, the battery includes a metal case, a cover plate 1, an electrolyte and a winding core 5, and the electrolyte and the winding core are arranged on the metal case Between the cover plate 1 and the cover plate 1, a positive electrode conductive terminal and a negative electrode conductive terminal 2 insulated from the cover plate 1 are provided, and the winding core 5 is provided with a positive electrode tab and a negative electrode tab. ear connection;

[0018] It also includes low voltage protection device 4, such as figure 2 As shown, the low voltage protection device includes an input voltage positive terminal U0, an input voltage negative terminal U1 and an excitation control terminal U2, the input voltage negative terminal U1 is connected to the negative conductive terminal 2, and the excitation control terminal U2 is connected to the The nega...

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Abstract

The invention provides an aluminum casing type lithium-ion power battery. The battery comprises a metal casing, a cover plate, an electrolyte solution and a roll core, and further comprises a low voltage protecting device, wherein the low voltage protecting device comprises an input voltage positive terminal U0, an input voltage negative terminal U1 and a stimulation control terminal U2, the input voltage negative terminal U1 is connected with a negative conductive terminal, the stimulation control terminal U2 is connected with a negative electrode lug of the roll core, and the input voltage positive terminal U0 is connected with the cover plate or the metal casing; when the voltage between the stimulation control terminal U2 and the input voltage positive terminal U0 is lower than the preset lower limit protecting voltage, the circuit between the input voltage negative terminal U1 and the stimulation control terminal U2 is off, and the battery is off. With the usage of the aluminum casing type lithium-ion power battery for a long period, the safe failures that the insulation resistance is low, the metal casing is corroded to cause the solution to be leaked and the like can be avoided, and the usage safety performance of the battery and a battery pack can be improved.

Description

technical field [0001] The invention relates to a lithium ion battery technology, in particular to an aluminum shell type lithium ion power battery. Background technique [0002] With sustainable development and low-carbon environmental protection deeply rooted in the hearts of the people, lithium-ion batteries have been successfully used in various devices, such as mobile phones and notebooks, due to their high operating voltage platform, high energy density, small self-discharge, and long service life. Computers, electric bicycles, electric cars, etc. Power batteries for electric vehicles usually need to combine multiple small-capacity, low-voltage single cells in parallel / series to form a high-capacity, high-voltage battery pack. In order to prevent the deformation of the battery and cope with the actual working conditions, the power lithium-ion single battery usually adopts a metal shell. [0003] There is a certain voltage between the positive and negative poles of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/48
CPCH01M10/0525H01M10/4257H01M2010/4271Y02E60/10
Inventor 马冬梅李缜贺狄龙
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY
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