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Novel lithium ion battery and battery module

A lithium-ion battery, a new type of technology, applied in the direction of lithium batteries, battery pack components, secondary batteries, etc., can solve problems such as thermal runaway of lithium-ion batteries, and achieve economic benefits, avoid combustion, and avoid abnormal temperature rise. Effect

Active Publication Date: 2019-08-09
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve this problem in the prior art, most of them monitor the gas concentration, content and battery temperature inside the lithium-ion battery, and perform fire extinguishing and cooling treatment on the lithium-ion battery, but the problem of thermal runaway of the lithium-ion battery cannot be solved from the source

Method used

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  • Novel lithium ion battery and battery module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The embodiment of the present invention provides a novel lithium-ion battery, including a casing 15, in which a positive electrode 401, a negative electrode 402, and an electrolyte 5 are provided; a part of the casing 15 is made of a fusible material made; the design principle of the positive electrode 401, the negative electrode 402 and the electrolyte 5 adopts the prior art, therefore, the present invention does not repeat too much; the positive electrode 401 and the negative electrode 402 are all connected with the shell The top wall of the body 15 is connected;

[0058] When the temperature inside the housing 15 exceeds the set threshold, the area made of the meltable material on the housing 15 is penetrated, the electrolyte 5 flows out from the penetration, and the positive electrode 401 It is completely separated from the negative electrode 402, and under the isolation of the cooling and flame-retardant gas, the electrolyte 5 will not decompose and generate H 2 ,...

Embodiment 2

[0066] Based on the same inventive concept as in Embodiment 1, the embodiment of the present invention provides a new type of lithium-ion battery module, including:

[0067] A sealed box 1, the sealed box 1 is filled with flame retardant gas;

[0068] Novel lithium-ion battery 2, the novel lithium-ion battery 2 is located in the sealed box 1, it includes a housing 15, the housing 15 is provided with a positive electrode 401, a negative electrode 402 and an electrolyte 5, its There is a distance between the bottom and the bottom of the sealed box 1, which is used as an electrolyte storage area 3 for storing the electrolyte 5 flowing out of the casing 15, and the bottom of the new lithium-ion battery 2 is connected to the bottom of the sealed box 1. The distance between the bottoms needs to ensure that the electrolyte 5 flowing out from the housing 15 must be completely separated from the positive electrode 401 and the negative electrode 402; part of the housing 15 is made of a ...

Embodiment 3

[0080] Based on embodiment 2, the difference between the embodiment of the present invention and embodiment 2 is:

[0081] In order to realize the continuous circulation of flame retardant gas in the sealed box 1, and to better reduce the temperature in the novel lithium-ion battery and the sealed box 1, the novel lithium-ion battery module also includes a gas circulation loop; the gas circulation The circuit is arranged on the outside of the sealed box 1;

[0082] The sealed box 1 is provided with a first through hole 6 and a second through hole 7, preferably, the first through hole 6 is located on the upper part of the sealed box 1, and the second through hole 7 Set in the lower part of the sealed box 1;

[0083] Both ends of the gas circulation loop are respectively connected to the first through hole 6 and the second through hole 7 to realize the circulation of the flame retardant gas; in a specific implementation manner of the embodiment of the present invention, the gas...

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PUM

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Abstract

The invention discloses a novel lithium ion battery and a battery module. The novel lithium ion battery includes a casing, wherein the casing is internally provided with a positive electrode, a negative electrode and electrolyte, a part of the casing is made of a fusible material; when the temperature inside the casing exceeds a set threshold, the region of the casing made of the fusible materialis penetrated, and the electrolyte flows out from a through portion and is separated from the positive electrode and the negative electrode. The novel lithium ion battery is advantaged in that when the temperature of the single lithium ion battery abnormally increases, the electrolyte in the single lithium ion battery is separated in time, ignition or decomposition of the electrolyte is effectively prevented, fire explosion of the novel lithium ion battery is prevented, and damage to other novel lithium ion batteries due to chain reaction caused by abnormal temperature rising of the single novel lithium ion battery is further avoided.

Description

technical field [0001] The invention belongs to the technical field of batteries, relates to a novel lithium ion battery and a battery module, and more specifically relates to a lithium ion battery and a flame retardant device in which an electrolyte can be separated from an electrode. Background technique [0002] The important feature of power generation, transmission and power consumption systems in the power industry is that they cannot store electric energy. Therefore, a large-scale energy storage system is introduced to coordinate the balance between power load and power generation, so that the grid operation can achieve the best economic efficiency. Lithium-ion batteries have become the most widely used battery type in power storage systems due to their high energy density and no pollution. Electrolyte is the blood of lithium-ion batteries, and its thermal stability is the primary factor restricting the safety performance of lithium-ion batteries. The solvent used in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M10/42H01M10/48H01M10/613H01M10/6563
CPCH01M10/4207H01M10/482H01M10/486H01M10/613H01M10/6563H01M50/116H01M50/131Y02E60/10Y02P70/50H01M10/4235H01M10/052H01M50/383H01M50/358H01M10/6556H01M10/0525
Inventor 朱洪斌张晓琴余翔
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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