CN110148693A - Anti- overheat lithium battery - Google Patents
Anti- overheat lithium battery Download PDFInfo
- Publication number
- CN110148693A CN110148693A CN201910487902.5A CN201910487902A CN110148693A CN 110148693 A CN110148693 A CN 110148693A CN 201910487902 A CN201910487902 A CN 201910487902A CN 110148693 A CN110148693 A CN 110148693A
- Authority
- CN
- China
- Prior art keywords
- battery
- expansion chamber
- dry ice
- battery cavities
- oil pocket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The present invention provides a kind of anti-overheat lithium battery, includes the battery cavities containing battery inner core in shell；Insulation oil pocket, expansion chamber, dry ice chamber are successively arranged below battery cavities；By divides between battery cavities and insulation oil pocket, and relief hole is formed on demarcation plate；It insulate and is separated between oil pocket and expansion chamber by piston plate；It is connected between expansion chamber and dry ice chamber by ejector pin valve；A hydraulic cylinder straight down is equipped in battery cavities, envelope has the liquid that expands with heat and contract with cold in hydraulic cylinder, piston in hydraulic cylinder connects downwards the mandril extended to above ejector pin valve, liquid expand with heat and contract with cold when temperature is greater than 70 DEG C, piston and mandril is pushed to open ejector pin valve, the dry ice for keeping dry ice intracavitary enters expansion chamber, and vaporized expanding, the piston plate above expansion chamber is pushed, the intracavitary insulating oil of insulating oil is pressed into battery cavities by relief hole.The lithium battery can make a response in time when overheat condition occurs in inside battery, eliminate safe hidden trouble, and improve the safety coefficient of battery.
Description
Technical field
The present invention relates to field of batteries, particularly, are related to a kind of lithium battery.
Background technique
People usually will use battery in daily life, and wherein lithium battery is because having energy density height, cycle life
The advantages that high and enjoy great popularity；However at it in use, cell degradation, using due to lack of standardization etc., will appear lithium once in a while
Battery overheat causes the case where burning is even exploded, and has some potential safety problems.
Summary of the invention
In view of the above-mentioned problems, the lithium battery can be in battery the purpose of the present invention is to provide a kind of anti-overheat lithium battery
Making a response in time when overheat condition occurs in inside, eliminates and generates the burning even hidden danger of explosion, improves the safety coefficient of battery.
The technical solution adopted by the present invention to solve the technical problems is: the anti-overheat lithium battery includes shell, the shell
It include in vivo the battery cavities containing battery inner core；The insulation oil pocket that envelope has insulating oil is equipped with below the battery cavities；The insulation
Expansion chamber, dry ice chamber are successively arranged below oil pocket；Pass through divides, and the separation between the battery cavities and insulation oil pocket
Relief hole is formed on plate；Separated between the insulation oil pocket and the expansion chamber by piston plate；The expansion chamber and dry ice chamber
Between pass through ejector pin valve connect；A hydraulic cylinder straight down is equipped in the battery cavities, envelope has heat expansion in the hydraulic cylinder
Shrinkage liquid, the piston in the hydraulic cylinder connects downwards the mandril extended to above the ejector pin valve, described to expand with heat and contract with cold
Liquid temperature be greater than 70 DEG C when, push the piston and mandril to open the ejector pin valve, the dry ice for keeping the dry ice intracavitary into
Enter the expansion chamber, and vaporized expanding, pushes the piston plate above expansion chamber, the intracavitary insulating oil of the insulating oil is passed through into institute
It states in relief hole indentation battery cavities.
Preferably, the liquid that expands with heat and contract with cold is mercury or kerosene.
Preferably, the relief hole is the hole that envelope has film, which is pressurized after breakage, and insulating oil is flowed from hole
To battery cavities.
The beneficial effects of the present invention are: the anti-overheat lithium battery in use, overheats if generating failure
Situation, when the liquid that expands with heat and contract with cold is heated beyond 70 DEG C, the liquid that expands with heat and contract with cold will expand and push the piston and top
Bar opens the ejector pin valve, so that the intracavitary dry ice of the dry ice enters the expansion chamber, and vaporized expanding, pushes expansion chamber
The intracavitary insulating oil of the insulating oil is pressed into battery cavities, to stop battery by the piston plate of top by the relief hole
The burning even security risk of explosion are eliminated in reaction.Simultaneously because dry ice sublimation can absorb a large amount of heat, it can be to overheat
Battery effective temperature-reducing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of this anti-overheat lithium battery.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
In the embodiment shown in fig. 1, which includes shell 1, includes containing battery inner core 20 in the shell 1
Battery cavities 2；The insulation oil pocket 3 that envelope has insulating oil is equipped with below the battery cavities 2；It is successively arranged below the insulation oil pocket 3
Expansion chamber 4, dry ice chamber 5；Separated between the battery cavities 2 and insulation oil pocket 3 by demarcation plate 7, and is formed with and lets out on the demarcation plate 7
Press hole 70；Separated between the insulation oil pocket 3 and the expansion chamber 4 by piston plate 8；Between the expansion chamber 4 and dry ice chamber 5
It is connected by ejector pin valve 50；A hydraulic cylinder 6 straight down is equipped in the battery cavities 2, envelope has heat expansion in the hydraulic cylinder 6
Shrinkage liquid, the connection one downwards of piston 61 in the hydraulic cylinder 6 extend to the mandril 62 of 50 top of ejector pin valve, the heat
Swollen shrinkage liquid pushes the piston 61 and mandril 62 to open the ejector pin valve 50, makes the dry ice when temperature is greater than 70 DEG C
Dry ice in chamber 5 enters the expansion chamber 4, and vaporized expanding, the piston plate 8 of 4 top of expansion chamber is pushed, by the insulation oil pocket
Insulating oil in 3 is pressed into battery cavities by the relief hole 70.
In addition, the liquid that expands with heat and contract with cold is mercury or kerosene, thermal expansion coefficient is higher.
In addition, the relief hole 70 is the hole that envelope has film, which is pressurized after breakage, and insulating oil is flowed to from hole
Battery cavities 2.
Above-mentioned anti-overheat lithium battery in use, if generate failure there is overheat condition, the liquid quilt that expands with heat and contract with cold
When being heated to more than 70 DEG C, the liquid that expands with heat and contract with cold will expand and the piston 61 and mandril 62 pushed to push up the ejector pin valve 50
It opens, so that the dry ice in the dry ice chamber 5 enters the expansion chamber 4, and vaporized expanding, pushes the piston plate of 4 top of expansion chamber
8, the insulating oil in the insulation oil pocket 3 is pressed into battery cavities 2 by the relief hole 70, to stop cell reaction, is disappeared
Except the burning even security risk of explosion.Simultaneously because dry ice sublimation can absorb a large amount of heat, can have to the battery of overheat
Effect cooling.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, made any modification, equivalent replacement be should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of anti-overheat lithium battery, including shell (1), it includes the battery cavities containing battery inner core (20) that the shell (1) is interior
(2)；It is characterized by: being equipped with the insulation oil pocket (3) that envelope has insulating oil below the battery cavities (2)；Under the insulation oil pocket (3)
Side is successively arranged expansion chamber (4), dry ice chamber (5)；Pass through demarcation plate (7) point between the battery cavities (2) and insulation oil pocket (3)
Every, and relief hole (70) are formed on the demarcation plate (7)；Pass through piston plate between the insulation oil pocket (3) and the expansion chamber (4)
(8) separate；It is connect between the expansion chamber (4) and dry ice chamber (5) by ejector pin valve (50)；One is equipped in the battery cavities (2)
A hydraulic cylinder (6) straight down, the interior envelope of the hydraulic cylinder (6) have the liquid that expands with heat and contract with cold, the piston (61) in the hydraulic cylinder (6)
A piece mandril (62) extended to above the ejector pin valve (50) of connection downwards, the liquid that expands with heat and contract with cold are greater than 70 DEG C in temperature
When, it pushes the piston (61) and mandril (62) to open the ejector pin valve (50), enters the dry ice in the dry ice chamber (5)
The expansion chamber (4), and vaporized expanding push the piston plate (8) above expansion chamber (4), will be exhausted in insulation oil pocket (3)
Edge oil is pressed into battery cavities by the relief hole (70).
2. anti-overheat lithium battery according to claim 1, it is characterised in that: the liquid that expands with heat and contract with cold is mercury or coal
Oil.
3. anti-overheat lithium battery according to claim 1, it is characterised in that: the relief hole (70) is the hole that envelope has film
Hole, the film are pressurized after breakage, and insulating oil flows to battery cavities (2) from hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910487902.5A CN110148693A (en) | 2019-06-05 | 2019-06-05 | Anti- overheat lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910487902.5A CN110148693A (en) | 2019-06-05 | 2019-06-05 | Anti- overheat lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110148693A true CN110148693A (en) | 2019-08-20 |
Family
ID=67590556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910487902.5A Withdrawn CN110148693A (en) | 2019-06-05 | 2019-06-05 | Anti- overheat lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110148693A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477991A (en) * | 2020-03-10 | 2020-07-31 | 安徽潜川动力锂电科技有限公司 | Treasured charges based on lithium ion battery cell |
| CN114122562A (en) * | 2022-01-25 | 2022-03-01 | 河南工学院 | Explosion-proof protection structure of large capacity lithium cell |
-
2019
- 2019-06-05 CN CN201910487902.5A patent/CN110148693A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477991A (en) * | 2020-03-10 | 2020-07-31 | 安徽潜川动力锂电科技有限公司 | Treasured charges based on lithium ion battery cell |
| CN111477991B (en) * | 2020-03-10 | 2022-10-04 | 安徽潜川动力锂电科技有限公司 | Treasured charges based on lithium ion battery cell |
| CN114122562A (en) * | 2022-01-25 | 2022-03-01 | 河南工学院 | Explosion-proof protection structure of large capacity lithium cell |
| CN114122562B (en) * | 2022-01-25 | 2022-04-19 | 河南工学院 | Explosion-proof protection structure of large capacity lithium cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190820 |