CN103490023A - Safety device of lithium ion battery - Google Patents
Safety device of lithium ion battery Download PDFInfo
- Publication number
- CN103490023A CN103490023A CN201310452357.9A CN201310452357A CN103490023A CN 103490023 A CN103490023 A CN 103490023A CN 201310452357 A CN201310452357 A CN 201310452357A CN 103490023 A CN103490023 A CN 103490023A
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- safety device
- battery safety
- cap
- 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.)
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- 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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
- H01M50/124—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure
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- 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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
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- 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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/155—Lids or covers characterised by the material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
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- 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
Abstract
The invention provides a safety device of a lithium ion battery. The device comprises a case and a case cover. The device is improved as follows: the case and the case cover comprise metal layers and organic membrane layers, and dry powder is used for filling between the metal layers and the organic membrane layers. Compared with the prior art, the safety device of the lithium ion battery is simple in structure, easy to realize and capable of performing active protection and cutting off a circuit timely, quickly and effectively to prevent the lithium ion battery from explosion and combustion due to high temperatures, so that the safety of the lithium ion battery is significantly improved.
Description
Technical field
The present invention relates to a kind of safety device, be specifically related to a kind of lithium ion battery safety device.
Background technology
Along with the development of microelectric technique, the equipment of miniaturization is increasing, and power supply has been proposed to very high requirement.Lithium battery by feat of its all many-sided remarkable performances by people be widely used in a lot of aspect, for example mobile phone, palmtop PC, notebook computer, electric tool, electric motor car, street lamp stand-by power supply, navigation lights, video camera, camera, family expenses small electric apparatus are even on military equipment and satellite.Lithium battery also is referred to as " chemical power source of application future is arranged most " by people, even be called " limit battery " or " last battery eliminator ".
In addition; from the environmental protection angle; due to the existence of the cadmium of the battery raw materials such as lead acid accumulator, mercury, lead and other elements, the world environments protective tissue is classified these materials in this battery as harmful substance already, based on this lithium battery, can deserve to be called " green " battery fully.
The appearance of lithium ion battery and afterwards update and perfect, driven the development of related industry, as developing rapidly of mobile phone, palmtop PC, camera, notebook computer and other small portable electrical equipments.Increasing rapidly of portable consuming device particularly, for wide prospect has been opened up in the application of lithium ion battery.At present, in the battery used of these products more than 60%, be all lithium ion battery.
Most widely used on electric automobile at present is lead acid accumulator, along with the development of electric vehicle engineering, except environmental angle is considered, because the lead acid accumulator energy density is lower, many drawbacks such as charging rate is slower, and the life-span is shorter, by other, to replace be trend of the times to more outstanding storage battery.
The power supply of new research and development mainly contains sodium-sulphur battery, nickel-cadmium cell, lithium battery, fuel cell, flying wheel battery etc., and the application of these novel power supplies, for more wide prospect has been opened up in the development of electric automobile.
Along with improving constantly of environmental requirement, lot of domestic and international major company has all stepped up the research to electric automobile.And most important in the research to electric automobile be exactly research to power supply.It is medium-and-large-sized, high-power Ni H accumulator, large-scale lithium ion battery and large-scale ultracapacitor all successively become the important motivity source of electric automobile.People are according to the distinct advantages that the lithium ion battery volume is little, lightweight, energy is large, using it as the first-selected power supply of following used for electric vehicle light high-energy electrokinetic cell.Just at present, people are the most good, visible to the prospect of lithium ion battery, to the lithium battery research space that still grows a lot.Through the in a few years more deep research to lithium ion battery, also obtained larger progress now.Particularly, since this century, large-scale lithium-ions battery starts to be applied to pure electric automobile and hybrid electric vehicle.These electric motor cars have vast potential for future development, and flourish due to electric motor car also just promoted the development of lithium-ion electric pool technology.
Have a same lithium ion battery of dual character with anything degree no exception, not perfect, also there are some shortcomings in it, and for example cost is also higher, and during low temperature, discharge rate is yet not high.Along with updating of preparation technology, the advantage of lithium ion battery can be day by day obvious.
The inventor finds that redox reaction easily occurs lithium ion battery when high temperature, and the precipitating metal lithium, directly contact and can cause burning with air in the situation that housing breaks, and the electrolyte that simultaneously ignites, strong flame occurs, and the gas rapid expansion, blast.
The inventor finds through long-term observation, research, has designed a kind of lithium ion battery safety device, can effectively prevent blast, the burning of lithium ion battery.
Summary of the invention
The purpose of this invention is to provide a kind of lithium ion battery safety device, effectively solve lithium ion battery in charge and discharge process, because of phenomenons such as self internal problem is generated heat, flatulence, blasts.
The objective of the invention is to adopt following technical proposals to realize:
A kind of lithium ion battery safety device provided by the invention, described device comprises: shell 2 and cap 6; Its improvements are, described shell 2 and cap 6 comprise metal level 3 and organic film 5, fill dry powder 4 between described metal level 3 and organic film 5.
Wherein, described shell 2 is cuboid, and a side is provided with opening.
Wherein, described cap 6 is arranged on the setting corresponding with the opening of described shell 2.
Wherein, lithium ion battery 1 is arranged in the closed cavity of described shell 2 and 6 formation of described cap.
Wherein, described lithium ion battery 1 is cuboid, on its same side, is provided with side by side positive and negative electrode.
Wherein, described cap 6 is provided with the lug hole 7 corresponding with described lithium ion battery 1 positive and negative electrode.
Wherein, the positive and negative electrode of described lithium ion battery 1 is arranged on the outside of described cap 6 through described lug hole 7.
Wherein, the positive and negative electrode of described lithium ion battery 1 is connected with external circuit.
Wherein, described organic film 5 is low density polyethylene (LDPE), and fusing point is 120～125 degrees centigrade.
Wherein, described dry powder 4 comprises phosphate, ammonium sulfate and ammonium phosphate salt.
Compared with the prior art, the beneficial effect that the present invention reaches is:
1, lithium ion battery safety device provided by the invention is simple in structure, is easy to realize.
2, lithium ion battery safety device provided by the invention can effectively solve lithium ion battery in charge and discharge process, because of phenomenons such as self internal problem is generated heat, flatulence, blasts.
3, lithium ion battery safety device provided by the invention can effectively prevent the injury that external impact causes lithium ion battery.
4, lithium ion battery safety device provided by the invention can effectively be realized initiatively protection, and when the temperature of lithium ion battery reaches the fusion temperature of organic film, organic film melt and spills dry powder keeps apart battery and oxygen, and the prevention battery further burns.
Even 5, lithium ion battery safety device provided by the invention can guarantee that battery, after the burning that heats up is impaired, can not damage external equipment yet.
The accompanying drawing explanation
Fig. 1 is: lithium ion battery structure schematic diagram provided by the invention;
Fig. 2 is: shell mechanism schematic diagram provided by the invention;
Fig. 3 is: shell cross-sectional schematic provided by the invention;
Fig. 4 is: shell cover structure schematic diagram provided by the invention;
Fig. 5 is: lug provided by the invention hole cross-sectional schematic;
Fig. 6 is: lithium ion battery safety device general assembly structural representation provided by the invention;
Wherein: 1, lithium ion battery; 2, shell; 3, metal level; 4, dry powder; 5, organic film; 6, cap; 7, lug hole.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
The present embodiment be take the lithium ion battery safety device as example, as shown in Figures 1 to 6, the lithium ion battery safety device that the embodiment of the present invention provides comprises: lithium ion battery 1, shell 2, metal level 3, dry powder 4, organic film 5, cap 6, lug hole 7.
The shell 2 of lithium ion battery safety device and cap 6 are divided into metal level 3 and organic film 5, be filled with dry powder 4 between this is two-layer, be provided with lug hole 7 on cap 6, the positive and negative electrode of lithium ion battery 1 is arranged on outside safety device, and can be connected with external circuit, as accompanying drawing 2 to as shown in accompanying drawing 5.
Lithium ion battery is arranged in the confined space of shell 2 and cap 6 compositions, connects circuit, lithium ion battery 1 is started working, as shown in Figure 6.
After the temperature of lithium ion battery rises to the melting temperature of organic film 5, organic film 5 fusings, dry powder 4 spills and covers lithium ion battery 1, by lithium ion battery 1 and air insulated, stops its continue to heat up burning, blast.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment, the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present invention, and do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. a lithium ion battery safety device, described device comprises: shell (2) and cap (6); It is characterized in that, described shell (2) and cap (6) comprise metal level (3) and organic film (5), between described metal level (3) and organic film (5), fill dry powder (4).
2. lithium ion battery safety device as claimed in claim 1, is characterized in that, described shell (2) is cuboid, and a side is provided with opening.
3. lithium ion battery safety device as claimed in claim 2, is characterized in that, described cap (6) is arranged on the setting corresponding with the opening of described shell (2).
4. lithium ion battery safety device as claimed in claim 3, is characterized in that, lithium ion battery (1) is arranged in the closed cavity of described shell (2) and described cap (6) formation.
5. lithium ion battery safety device as claimed in claim 4, is characterized in that, described lithium ion battery (1) is cuboid, on its same side, is provided with side by side positive and negative electrode.
6. lithium ion battery safety device as claimed in claim 5, is characterized in that, described cap (6) is provided with the lug hole (7) corresponding with described lithium ion battery (1) positive and negative electrode.
7. lithium ion battery safety device as claimed in claim 6, is characterized in that, the positive and negative electrode of described lithium ion battery (1) is arranged on the outside of described cap (6) through described lug hole (7).
8. lithium ion battery safety device as claimed in claim 7, is characterized in that, the positive and negative electrode of described lithium ion battery (1) is connected with external circuit.
9. lithium ion battery safety device as claimed in claim 8, is characterized in that, described organic film (5) is low density polyethylene (LDPE), and fusing point is 120～125 degrees centigrade.
10. lithium ion battery safety device as claimed in claim 9, is characterized in that, described dry powder (4) comprises phosphate, ammonium sulfate and ammonium phosphate salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310452357.9A CN103490023B (en) | 2013-09-27 | 2013-09-27 | A kind of safety device of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310452357.9A CN103490023B (en) | 2013-09-27 | 2013-09-27 | A kind of safety device of lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103490023A true CN103490023A (en) | 2014-01-01 |
| CN103490023B CN103490023B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310452357.9A Active CN103490023B (en) | 2013-09-27 | 2013-09-27 | A kind of safety device of lithium ion battery |
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| CN (1) | CN103490023B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064692A (en) * | 2014-02-18 | 2014-09-24 | 浙江超威创元实业有限公司 | Lithium battery having fire extinguishing apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101107731A (en) * | 2005-03-25 | 2008-01-16 | 株式会社Lg化学 | Small battery pack having frame retardant adhesive member |
| CN101997102A (en) * | 2009-08-26 | 2011-03-30 | 比亚迪股份有限公司 | Lithium ion battery diaphragm and manufacturing method thereof |
| CN102202883A (en) * | 2008-11-03 | 2011-09-28 | 栗村化学株式会社 | Cell pack and manufacturing method thereof |
-
2013
- 2013-09-27 CN CN201310452357.9A patent/CN103490023B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101107731A (en) * | 2005-03-25 | 2008-01-16 | 株式会社Lg化学 | Small battery pack having frame retardant adhesive member |
| CN102202883A (en) * | 2008-11-03 | 2011-09-28 | 栗村化学株式会社 | Cell pack and manufacturing method thereof |
| CN101997102A (en) * | 2009-08-26 | 2011-03-30 | 比亚迪股份有限公司 | Lithium ion battery diaphragm and manufacturing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064692A (en) * | 2014-02-18 | 2014-09-24 | 浙江超威创元实业有限公司 | Lithium battery having fire extinguishing apparatus |
| CN104064692B (en) * | 2014-02-18 | 2016-03-02 | 浙江超威创元实业有限公司 | With the lithium battery of extinguishing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103490023B (en) | 2016-07-06 |
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