CN107732035A - A kind of thermal runaway defends battery case - Google Patents
A kind of thermal runaway defends battery case Download PDFInfo
- Publication number
- CN107732035A CN107732035A CN201710910639.7A CN201710910639A CN107732035A CN 107732035 A CN107732035 A CN 107732035A CN 201710910639 A CN201710910639 A CN 201710910639A CN 107732035 A CN107732035 A CN 107732035A
- Authority
- CN
- China
- Prior art keywords
- battery case
- thermal runaway
- battery
- defends
- adhesive capacity
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 33
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims abstract description 3
- 238000010276 construction Methods 0.000 claims abstract description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical group [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 16
- 229910001416 lithium ion Inorganic materials 0.000 claims description 16
- 229920002379 silicone rubber Polymers 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 229910052744 lithium Inorganic materials 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000001467 acupuncture Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- -1 siloxanes Chemical class 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000002305 electric material Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001843 polymethylhydrosiloxane Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
-
- 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
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/1243—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the internal coating on the casing
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a kind of thermal runaway to defend battery case, the battery case is different from traditional metal battery shell, the inspiration influenceed by windshield PVB films and puncture thing insulation degree on thermal runaway, the excellent thin layer of adhesion property is coated in the internal surface of battery shell of arbitrary shape, material, so as to form a kind of composite construction.Battery case principle of the present invention is simple, easy to operate, practicability and effectiveness.The propagation of thermal runaway equally can be effectively prevented in the case where battery is accumulated using the battery case of the present invention, reduces the harm of lithium battery, beneficial to its further development and application.
Description
Technical field
The present invention relates to lithium ion battery and automotive crash safety field, more particularly to thermal runaway defence lithium ion battery
Shell.
Background technology
Lithium ion battery has relatively broad application in Aero-Space, automobile and portable set, its safety problem
It is of great interest.
Lithium ion battery case plays vital effect in battery protection, protects battery core, reduces and is carried outside its stand under load
The injury of lotus, contact of the isolation battery core with outside air, can safely and effectively work.
During lithium ion battery use, the hair that lithium ion battery thermal runaway can be caused to react inevitably is punctured
It is raw, cause the dangerous working conditions such as on fire or even blast, have impact on its further popularization.Research shows that lithium battery is in different conductions
The severe degree to be reacted in the case of material acupuncture is different.Electric conductivity is better, and thermal runaway reaction is more violent, when puncture thing
For thermal runaway reaction does not occur during insulator then.
The content of the invention
The technology of the present invention solves problem：Overcome the deficiencies in the prior art, there is provided a kind of thermal runaway defends battery case.Completely cutting off
While battery core is with outside air, it can effectively be wrapped up when lithium ion battery is by outside acupuncture load and puncture thing, play insulation
Effect, the generation of thermal runaway is effectively prevented, expanded the function of battery case.
The technical solution adopted by the present invention is：A kind of thermal runaway defends battery case, and its feature is：Based on it is variously-shaped,
The internal surface of battery shell of material property coats one layer of material with adhesive capacity, forms a kind of thermal runaway of one side composite construction and prevents
Imperial battery case.
The material with adhesive capacity is the normal direction maximum adhesion power under radius 1.87mm spherical indenter loading
For 1.46-5.36mN, tangential maximum adhesion power is 19.89-38.14mN material, and it can effectively wrap up puncture thing, make puncture
Thing reaches insulation effect.
The material with adhesive capacity is silicon rubber.
The coating thickness of the material with adhesive capacity is 0.1-0.5mm, preferably 0.3mm.
The battery is lithium ion battery.
The basic material of the battery case is aluminium or steel.
The battery case is used to encapsulate cylindrical battery core or square electric cell.
The material with adhesive capacity is with the increase of its adhesiving effect, it is possible to increase to the effective of thermal runaway defence
Property.
The beneficial effect of the present invention compared with prior art：
(1) battery case of the present invention has anti-thermal runaway function, can effectively protect lithium ion battery.
(2) battery case of the present invention is upgraded in prior art, the selection of battery case shape, processing technology and material
Unrestricted, no technical difficulty, Simple And Practical are processed in manufacture.
(3) using the battery of battery case of the invention in groups in use, because the thermal runaway of cell is effectively controlled
System, the probability of battery pack thermal runaway propagation can be substantially reduced.
(4) anti-thermal runaway battery case of the invention, the shape of battery case is not limited to, suitable for the lithium ion of any shape
Battery.
(5) battery thermal runaway defence capability of the invention can arbitrarily change with the change of adhesion material.
(6) the battery case of the invention coating silicon rubber on the basis of existing, method is simple, while the adhesion property of silicon rubber
A range of regulation can be realized by the proportioning of material, the change of silicon rubber thickness influences to imitate the parcel for puncturing thing
Fruit, therefore the present invention obtains the silicon rubber of certain adhesion property by the rational proportion of material, chooses suitable silicon rubber thickness, both
There is preferable solar heat protection performance out of control, again will not be too heavy.
In a word, battery case principle of the present invention is simple, easy to operate, practicability and effectiveness.Using the battery case of the present invention in battery
The propagation of thermal runaway equally can be effectively prevented in the case of accumulation, reduces the harm of lithium battery, further develops and answers beneficial to it
With.
Brief description of the drawings
Fig. 1 is column-shaped battery case in the present invention；
Fig. 2 is cubic battery in the present invention.
Wherein：1 is battery case of different shapes, and 2 be the cohesive material of internal coat.
Embodiment
With reference to diagram, the present invention is described in detail.
The application of the present invention is lithium ion battery case.The acupuncture experiment of lithium ion battery shows, is to lead when puncturing thing
During electric material, lithium ion battery easily occurs thermal runaway and then triggers catching fire or even explode, and is insulation material when puncturing thing
During material, only there is hydraulic performance decline in lithium ion battery, without thermal runaway occurs.Therefore if the electric conductivity of thing is punctured if can effectively control
The generation of thermal runaway and the propagation of thermal runaway between battery pack can effectively be suppressed.The present invention base batteries shell using into
Ripe cold-rolling process or Sheet Metal Forming Technology is processed, and shape has cylindrical, square, and material is aluminium or steel, without special, using city
The battery case sold on field.Existing winding battery core or square laminated plates battery core can be selected in the battery core that battery case is wrapped up,
Similarly, battery core does not need additional designs.Due to designed battery case simple shape so the technique of cell package is constant.
Battery case of the present invention uses the technique of single layer coating, has in the internal coat of base batteries shell compared with strongly adherent energy
Material, such as silicon rubber, its normal direction maximum adhesion power under radius 1.87mm spherical indenter loading is 1.46-5.36mN,
Tangential maximum adhesion power is 19.89-38.14mN.Coating thickness is 0.1-0.5mm, and the too small puncture resistant effect of thickness is limited, if
It is blocked up to increase the thickness of battery, therefore select the thickness range.When it is material with good conductivity to puncture thing, its puncture process
In puncture battery case first, but be not directly contacted with positive and negative pole material.Silicon rubber effectively stops the entrance for puncturing thing, while is puncturing
During be tightly adhered to puncture thing, due to the insulating properties of silicon rubber can effectively suppress because materials conductive bring it is unnecessary
High current, it can effectively suppress the generation of thermal runaway.
The specific embodiment of the present invention is as follows：
The present invention is according to enlightenment of the thing insulation effect to the thermal runaway extent of reaction is punctured, by being applied in original internal surface of battery shell
The method of adhesion material is covered, thermal runaway reaction, which occurs, by acupuncture operating mode to lithium ion battery suppresses.
As shown in Figure 1 and Figure 2, it is respectively that cylindrical and cubic battery, inwall blacking part are adhesion material.Adhere to material
Expect for silicon rubber, the proportioning of the poly- hydrogen-based siloxanes (PMHS) of crosslinking agent and host polyene radical siloxane (PMVS) is 1:30, its
Normal direction maximum adhesion power under radius 1.87mm spherical indenter loading is 5.36mN, and tangential maximum adhesion power is 38.14mN, is applied
Cover thickness selection 0.3mm.
This battery case is punctured before thing is pierced into battery core and punctured first inside battery case when being reacted by acupuncture, powerful
Adhesion wraps up rapidly puncture thing, reaches insulation effect, so as to effectively suppress the generation of thermal runaway reaction.Similarly, exist
In battery pack, the propagation of thermal runaway, the security of effective guarantee battery pack will not be caused because of the failure of cell.
Above example is provided just for the sake of the description purpose of the present invention, rather than limitation the scope of the present invention.The present invention
Scope be defined by the following claims.The various equivalent alterations and modifications for not departing from spirit and principles of the present invention and making,
It all should cover within the scope of the present invention.
Claims (8)
1. a kind of thermal runaway defends battery case, it is characterised in that：Based on variously-shaped, material property internal surface of battery shell coating one
Layer has the material of adhesive capacity, forms a kind of thermal runaway defence battery case of one side composite construction.
2. thermal runaway according to claim 1 defends battery case, it is characterised in that：The material with adhesive capacity is
Normal direction maximum adhesion power under radius 1.87mm spherical indenter loading is 1.46-5.36mN, and tangential maximum adhesion power is
19.89-38.14mN material, it can effectively wrap up puncture thing, puncture thing is reached insulation effect.
3. thermal runaway according to claim 2 defends battery case, it is characterised in that：The material with adhesive capacity is
Silicon rubber.
4. thermal runaway according to claim 1 defends battery case, it is characterised in that：The material with adhesive capacity
Coating thickness is 0.1-0.5mm, preferably 0.3mm.
5. thermal runaway according to claim 1 defends battery case, it is characterised in that：The battery is lithium ion battery.
6. thermal runaway according to claim 1 defends battery case, it is characterised in that：The basic material of the battery case is aluminium
Or steel.
7. thermal runaway according to claim 1 defends battery case, it is characterised in that：The battery case is used to encapsulate cylinder
Battery core or square electric cell.
8. thermal runaway according to claim 1 or 2 defends battery case, it is characterised in that：The material with adhesive capacity
Material is with the increase of its adhesiving effect, it is possible to increase to the validity of thermal runaway defence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710910639.7A CN107732035A (en) | 2017-09-29 | 2017-09-29 | A kind of thermal runaway defends battery case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710910639.7A CN107732035A (en) | 2017-09-29 | 2017-09-29 | A kind of thermal runaway defends battery case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107732035A true CN107732035A (en) | 2018-02-23 |
Family
ID=61209226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710910639.7A Pending CN107732035A (en) | 2017-09-29 | 2017-09-29 | A kind of thermal runaway defends battery case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107732035A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325987A (en) * | 2013-05-30 | 2013-09-25 | 苏州启智机电技术有限公司 | Punching-resistant lithium battery |
| JP2015041523A (en) * | 2013-08-22 | 2015-03-02 | 株式会社豊田自動織機 | Power storage device and method of manufacturing power storage device |
| CN205452455U (en) * | 2015-12-25 | 2016-08-10 | 广东精进能源有限公司 | Safe high power capacity cylinder battery |
-
2017
- 2017-09-29 CN CN201710910639.7A patent/CN107732035A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325987A (en) * | 2013-05-30 | 2013-09-25 | 苏州启智机电技术有限公司 | Punching-resistant lithium battery |
| JP2015041523A (en) * | 2013-08-22 | 2015-03-02 | 株式会社豊田自動織機 | Power storage device and method of manufacturing power storage device |
| CN205452455U (en) * | 2015-12-25 | 2016-08-10 | 广东精进能源有限公司 | Safe high power capacity cylinder battery |
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| 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180223 |
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| WD01 | Invention patent application deemed withdrawn after publication |