CN103000967B - Battery safety protection device - Google Patents
Battery safety protection device Download PDFInfo
- Publication number
- CN103000967B CN103000967B CN201210528370.3A CN201210528370A CN103000967B CN 103000967 B CN103000967 B CN 103000967B CN 201210528370 A CN201210528370 A CN 201210528370A CN 103000967 B CN103000967 B CN 103000967B
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- Prior art keywords
- battery
- battery case
- storage container
- hot melt
- cooling agent
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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
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- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to the technical field of battery protection, and especially relates to a battery safety protection device used for preventing combustion due to battery ouverheating and out of control; the device comprises a battery case, and a storage container storing a cooling agent; the battery case is used for accommodating more than one battery; the battery case is connected with the storage container through a connecting pipeline; more than one starting device is disposed on a part of the connecting pipeline in the battery case; A battery or a battery pack is disposed in the battery case; the battery case is communicated with the storage container filled with the cooling agent through the connecting pipeline; the starting device is disposed on the connecting pipeline; when a certain battery is short-out, the released heat can increase the temperature in the battery case, and thus the starting device is turned on; the cooling agent in the storage container enters into the battery case to decrease the temperature in the battery case; therefore thermal out of control can be prevented effectively, and fire breaking out and combustion of the battery are prevented.
Description
Technical field
The present invention relates to battery protection technical field, particularly battery safety protection device, causing burning for preventing battery from crossing thermal runaway.
Background technology
Battery, as the important component part of regenerative resource and new forms of energy, will play vital role.Lithium battery is since succeeding in developing, and due to it, to have operating voltage high, and specific energy is large, and have extended cycle life, the advantages such as self-discharge rate is low, pollution-free, are widely used, and is also the battery that countries nowadays first-selection coordinates new forms of energy development.
Traditional lithium battery mainly coordinates the electronic product such as IT and communication to use, and capacity is less, and technology is quite ripe; Coordinate new forms of energy and stored energy application, lithium battery capacity need be done greatly, battery capacity being done the large thing followed is afterwards the safety issue of product, as, a capacity is the 4.2V lithium battery of 100Ah, and after internal short-circuit, energy can discharge completely about 5 seconds, its internal short-circuit battery will reach 72000 peaces, so high electric current must make internal temperature of battery raise instantaneously, and cause " thermal runaway ", thermal runaway is the main cause causing battery catches fire to burn.The research that current people improve lithium battery safety all concentrates in the mechanism of inside battery and the improvement of material mostly, as added flame-retardant additive, development of new barrier film, change both positive and negative polarity active material etc., because these Improving Measurements relate to technical barrier too many in basic research, or change the current lithium battery resources of production and technical resource, thus the fail safe raising of lithium battery is in progress very slow, produces little effect always.
Now, no matter domestic and international, high-capacity lithium battery is used all to have the accident of catching fire in the new forms of energy pure electric vehicle that pilot is run, make the development of industry cover with shade, some research even has to reduce the specific energy of battery system in order to the safety solving lithium battery, also proposes to adopt the low-down material of some specific energies, as lithium titanate etc., although also can play in some effects, battery is eternal theme toward high-energy development, is also the direction of effort from now on.Thus, the fail safe yet of high-capacity lithium-ion electricity does not singly govern the development of lithium battery technology, seriously governs the utilization of lithium battery on pure electric vehicle yet.
Summary of the invention
The present invention makes the instantaneous rising of internal temperature of battery to solve current battery because of internal short-circuit, the problem causing battery catches fire to burn and the battery safety protection device provided.
For reaching above-mentioned functions, technical scheme provided by the invention is:
A kind of battery safety protection device; comprise battery case, store the storage container of cooling agent; described battery case is for placing more than one battery; described battery case is communicated with described storage container by connecting tube, and the part that described connecting tube is positioned at battery case is provided with more than one starting drive that the cooling agent of described storage container is sprayed.
Preferably, described starting drive is temperature sense switch.
Preferably, described starting drive is hot melt switch.
Preferably, described hot melt switch is hot melt chock plug, and described hot melt chock plug is coordinated with described connecting tube by screw thread, is provided with sealing ring and heat shield between described hot melt chock plug and described connecting tube.
Preferably, described battery case is provided with pressure relief device.
Preferably, described pressure relief device is unidirectional valve.
Preferably, described storage container top is provided with Pressure gauge and valve.
Preferably, described cooling agent is liquid CO
2.
Beneficial effect of the present invention is: a kind of battery safety protection device; by battery or battery pack are arranged in a battery case; again the storage container that described battery case and is equipped with cooling agent is connected by connecting tube; described connecting tube is provided with starting drive; the heat discharged when some battery short circuits can cause the temperature in described battery case to raise; thus described starting drive can be opened; cooling agent in described storage container can spray and the temperature in described battery case is declined; thus effectively prevent thermal runaway, avoid battery catches fire to burn.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment one;
Fig. 2 is the structural representation of embodiment two;
Fig. 3 is the schematic diagram that hot melt chock plug coordinates with connecting tube.
Embodiment
Below in conjunction with accompanying drawing 1 to accompanying drawing 3, the present invention is further elaborated:
Embodiment one:
Battery safety protection device as shown in Figure 1, comprise battery case 1, be arranged at the storage container 2 that battery case 1 external memory contains cooling agent, in the present embodiment, battery case 1 is that the seal case adopting stainless steel material to make (represents internal structure of the present invention for clear in FIG, the one side of seal case does not represent), more than one battery 3 or battery pack series connection are fixedly installed in the annular seal space of battery case 1, battery case 1 is connected with the storage container 2 storing cooling agent by metal connecting tube road 4, the part that connecting tube 4 is positioned at battery case 1 is provided with more than one starting drive 41.
Starting drive 41, for opening connecting tube 4, makes the cooling agent in storage container 2 enter in battery case 1.In the present embodiment, starting drive 41 adopts hot melt switch, and after hot melt switch refers to and reaches uniform temperature, described hot melt switch just can melt automatically; Certain starting drive 41 also can adopt miscellaneous equipment, as required as temperature sense switch etc.
As shown in Figure 3, hot melt switch in the present embodiment adopts fusing point to be 120 DEG C--the hot melt chock plug 5 that the material of 300 DEG C is made, hot melt chock plug 5 is provided with external screw thread, connecting tube 4 is provided with the internal thread matched with the external screw thread of hot melt chock plug 5, hot melt chock plug 5 is tightened on connecting tube 4 by threaded engagement, for making the cooling agent in connecting tube 4 leak, between hot melt chock plug 5 and connecting tube 4, be also provided with sealing ring 7; Hot melt chock plug 5 can be caused lower with the temperature of cooling agent contact position owing to there being the existence of cooling agent in connecting tube 4, even if so the temperature in battery case 1 has reached the fusing point of hot melt chock plug 5, hot melt chock plug 5 also can not melt, thus lost efficacy, be also provided with a heat shield (6) for preventing this from occurring between hot melt chock plug 5 and connecting tube 4.
Due to liquid CO
2in the vaporescence being converted into gaseous state, need to absorb a large amount of heats makes environment temperature reduce rapidly, and CO
2itself there is fire-retardant effect, simultaneously liquid CO
2price is also cheap, and therefore the present embodiment preferentially adopts liquid CO
2as cooling agent.
Liquid CO in storage container 2
2enter after in battery case 1, the pressure in battery case 1 can be caused to rise rapidly, cracked for preventing battery case 1 or there is other potential safety hazard due to hypertonia, battery case 1 is provided with pressure relief device 11, in the present embodiment, adopt unidirectional valve as pressure relief device 11.
The pressure condition in storage container 2 can be known for convenience of user or maintenance personal at a glance, determine whether that the top needing to change storage container 2 is provided with Pressure gauge 21; Simultaneously in order to close this storage container 2 when changing storage container 2, the top of storage container 2 is also provided with controlled valve 22.
Embodiment two:
As shown in Figure 2, in the present embodiment, storage container 2 is arranged in battery case 1, so that maintenance personal carries out integral replacing.Other parts in the present embodiment are identical with embodiment one, no longer describe in detail here.
Operation principle of the present invention is as follows: in use, when a certain battery 3 or battery pack are short-circuited, the heat discharged can cause the temperature in battery case 1 to raise, when the fusion temperature of temperature higher than hot melt chock plug 5, hot melt chock plug 5 melts, the liquid CO in storage container 2
2can enter rapidly in battery case 1, liquid CO
2in the process of vaporization, absorb a large amount of heats thus the temperature in battery case 1 is declined, thus effectively prevent thermal runaway, avoiding battery 3 catching fire.
The above embodiment, just preferred embodiments of the present invention, be not limit practical range of the present invention, therefore all equivalences done according to structure, feature and the principle described in the present patent application the scope of the claims change or modify, and all should be included in patent claim of the present invention.
Claims (5)
1. a battery safety protection device, it is characterized in that: comprise battery case (1), store the storage container (2) of cooling agent, described battery case (1) is for placing more than one battery (3), described battery case (1) is connected with described storage container (2) by connecting tube (4), and the part that described connecting tube (4) is positioned at battery case (1) is provided with more than one starting drive (41) that the cooling agent of described storage container (2) is sprayed; Described starting drive (41) is hot melt switch; Described hot melt switch is hot melt chock plug (5), described hot melt chock plug (5) is coordinated with described connecting tube (4) by screw thread, is provided with sealing ring (7) and heat shield (6) between described hot melt chock plug (5) and described connecting tube (4).
2. battery safety protection device as claimed in claim 1, is characterized in that: described battery case (1) is provided with pressure relief device (11).
3. battery safety protection device as claimed in claim 2, is characterized in that: described pressure relief device (11) is unidirectional valve.
4. battery safety protection device as claimed in claim 3, is characterized in that: described storage container (2) top is provided with Pressure gauge (21) and valve (22).
5. battery safety protection device as claimed in claim 4, is characterized in that: described cooling agent is liquid CO
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210528370.3A CN103000967B (en) | 2012-12-10 | 2012-12-10 | Battery safety protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210528370.3A CN103000967B (en) | 2012-12-10 | 2012-12-10 | Battery safety protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103000967A CN103000967A (en) | 2013-03-27 |
| CN103000967B true CN103000967B (en) | 2015-07-08 |
Family
ID=47929270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210528370.3A Active CN103000967B (en) | 2012-12-10 | 2012-12-10 | Battery safety protection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN103000967B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104882639A (en) * | 2015-04-28 | 2015-09-02 | 湖北长海新能源科技有限公司 | Method and device for restraining and preventing thermal runaway of lithium ion battery |
| CN105977572B (en) * | 2016-06-16 | 2018-09-18 | 广东合一新材料研究院有限公司 | The working medium cooling system by contact and its working method of capacity cell |
| CN107453001A (en) * | 2017-07-12 | 2017-12-08 | 浙江谷神能源科技股份有限公司 | A kind of lithium battery fire-retarding device |
| CN111384341A (en) * | 2019-05-07 | 2020-07-07 | 国网电力科学研究院武汉南瑞有限责任公司 | Lithium battery box with fireproof function and using method thereof |
| CN110350139A (en) * | 2019-06-05 | 2019-10-18 | 国网江苏省电力有限公司电力科学研究院 | A kind of extinguishing device of energy-storage battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761353A (en) * | 2009-12-18 | 2010-06-30 | 大连海事大学 | Air cooling system for mine rescue capsule |
| CN201868523U (en) * | 2010-10-29 | 2011-06-15 | 中航锂电（洛阳）有限公司 | Lithium ion power battery with safety valve |
| CN202434667U (en) * | 2011-10-12 | 2012-09-12 | 浙江南都电源动力股份有限公司 | Cooling and safety protection device for large-sized assembled lithium ion battery |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10233237A (en) * | 1997-02-17 | 1998-09-02 | Nissan Motor Co Ltd | Nonaqueous electrolyte secondary battery |
| CN202997005U (en) * | 2012-12-10 | 2013-06-12 | 东莞市伊动新能源科技有限公司 | Battery safety protection device |
-
2012
- 2012-12-10 CN CN201210528370.3A patent/CN103000967B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761353A (en) * | 2009-12-18 | 2010-06-30 | 大连海事大学 | Air cooling system for mine rescue capsule |
| CN201868523U (en) * | 2010-10-29 | 2011-06-15 | 中航锂电（洛阳）有限公司 | Lithium ion power battery with safety valve |
| CN202434667U (en) * | 2011-10-12 | 2012-09-12 | 浙江南都电源动力股份有限公司 | Cooling and safety protection device for large-sized assembled lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103000967A (en) | 2013-03-27 |
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Owner name: DONGGUAN LONGXING AERONAUTICS SCIENCE + TECHNOLOGY Effective date: 20130402 |
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Effective date of registration: 20130402 Address after: 523808, building 1, building 113, Songshan science and Technology Industrial Park, building 4, Songshan Lake, Guangdong, Dongguan Applicant after: Dongguan Yidong New Energy Technology Co., Ltd. Applicant after: Dongguan Longxing Aeronautics Science & Technology Co., Ltd. Address before: 523808, building 1, building 113, Songshan science and Technology Industrial Park, building 4, Songshan Lake, Guangdong, Dongguan Applicant before: Dongguan Yidong New Energy Technology Co., Ltd. |
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