CN208873850U - A kind of anti-thermal runaway battery - Google Patents
A kind of anti-thermal runaway battery Download PDFInfo
- Publication number
- CN208873850U CN208873850U CN201821490903.2U CN201821490903U CN208873850U CN 208873850 U CN208873850 U CN 208873850U CN 201821490903 U CN201821490903 U CN 201821490903U CN 208873850 U CN208873850 U CN 208873850U
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- CN
- China
- Prior art keywords
- thermal runaway
- cover board
- cold plate
- battery
- cavity
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- 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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- 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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to a kind of anti-thermal runaway batteries, including shell, electrolyte, core, battery cover board, positive terminal and negative terminal, the electrolyte and core are located in the shell, the battery cover board is sealed on the shell upper end, the positive terminal and negative terminal are located at the battery cover board both ends, the positive terminal is electrically connected with the battery cover board and core respectively, the negative terminal is electrically connected with core, the rotating sheet is located in the battery cover board, when the rotating sheet is in unturned state, the battery cover board and negative terminal insulate, when the rotating sheet is in the state being flipped up, the battery cover board is electrically connected with negative terminal, it further include cold plate, the cold plate is located in the shell or a part of the composition shell, cavity is equipped with inside the cold plate, the cavity It is interior to be filled with refrigerant.The occurrence of implementing a kind of anti-thermal runaway battery of the utility model, can avoid or reduce battery thermal runaway.
Description
Technical field
The utility model relates to battery, in particular to a kind of anti-thermal runaway battery.
Background technique
Lithium ion battery is widely used in vehicle, video camera, pen with its high voltage, the close and good cycle life of high energy
Remember the products such as this and mobile phone, with the extensive use of lithium ion battery, thermal runaway safety problem is also increasingly taken seriously.
Thermal runaway diffusion process is to lead to battery when because disconnected short-circuit or electrically unbalanced when a certain battery in battery pack
The abnormal heating in charge and discharge process, once the battery is more than thermal runaway reaction critical-temperature (generally 150 DEG C or so), battery
Internal material will occur to thermally decompose exothermic reaction successively, and so-called thermal decomposition heat release is a kind of self-catalyzed reaction of self-heating
Journey can sharply raise the temperature of battery, and in thermal runaway, battery temperature can be more than 500 DEG C or more, self-heating temperature rise per minute
It can be more than 20 DEG C or more, so battery can heat up more than after critical runaway temperature and generate so-called thermal runaway moment.Thermal runaway
The heat discharged does not obtain good barrier and heat dissipation design, will the neighbouring battery of laser heating, eventually lead to entire
Comprehensive thermal runaway occurs for other all batteries in battery pack, generates violent combustion heat release reaction, can even generate when serious
Explosion.
Utility model content
In view of the above problems in the prior art, the purpose of this utility model is to provide a kind of anti-thermal runaway batteries, this is anti-
Cold plate built in thermal runaway battery, thus the occurrence of avoiding or reducing battery thermal runaway.
The utility model provides a kind of anti-thermal runaway battery, including shell, electrolyte, core, battery cover board, positive terminal
And negative terminal, the electrolyte and core are located in the shell, the battery cover board is sealed on the shell upper end, described
Positive terminal and the negative terminal are located at the battery cover board both ends, the positive terminal and negative terminal difference
It being electrically connected with the core, further includes cold plate, the cold plate is located in the shell or a part of the composition shell,
It is equipped with cavity inside the cold plate, is filled with refrigerant in the cavity.
It further, further include rotating sheet and positive strap, the positive strap is electrically connected to the positive terminal
Between core, the rotating sheet is located in the battery cover board, when the rotating sheet is in unturned state, the battery
Cover board and the negative terminal insulate, when the rotating sheet is in the state being flipped up, the battery cover board and the cathode
Terminal electrical connection；
The cold plate includes that the cold plate is divided into the first cavity by hot melt interlayer and fuse, the hot melt interlayer
With the second cavity, the fuse is located in the hot melt interlayer, and the fuse is in parallel with the positive strap.
Further, the overcurrent blowout current of the fuse is less than the overcurrent blowout current of the positive strap.
Further, the positive strap is equipped with elongated transverse opening or thin at the position close to the positive terminal
Long connecting neck portion.
Further, the hot melt interlayer is made of low melting material.
Further, the cold plate further includes the first refrigerant injection orifice and second refrigerant injection orifice, and described first
Refrigerant injection orifice is connected to first cavity, and the second refrigerant injection orifice is connected to second cavity.
Further, first cavity is filled with the first refrigerant, and second cavity is filled with can be with described the
The second refrigerant of the one refrigerant generation endothermic reaction.
Optionally, the refrigerant is decalescence material.
Further, the decalescence material is paraffin, sodium thiosulfate, stearic acid or myristic acid.
Further, the shell of the cold plate is made of corrosion-resistant metal materials.
Due to above-mentioned technical proposal, the utility model has the following beneficial effects:
By adding cold plate in inside battery or a part of battery case being substituted for cold plate, in inside battery temperature
When degree increases or is excessively high, is effectively cooled down to inside battery by cold plate, avoid or reduce the feelings of battery failure
Condition occurs.
After blown fuse, cold plate starts to freeze, and positive strap equally fuses because of overcurrent, cuts off internal electricity
Duplicate protection battery is played the role of on road.
Detailed description of the invention
It, below will be to institute in embodiment or description of the prior art in order to illustrate more clearly of the technical solution of the utility model
Attached drawing to be used is needed to be briefly described.It should be evident that the accompanying drawings in the following description is only some of the utility model
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of anti-thermal runaway battery provided by the utility model；
Fig. 2 is the structural schematic diagram of core in a kind of anti-thermal runaway battery provided by the utility model；
Fig. 3 is the structural schematic diagram of cold plate in a kind of anti-thermal runaway battery of the offer of the utility model embodiment one；
Fig. 4 is the sectional view in a kind of anti-thermal runaway battery of the offer of the utility model embodiment one at cold plate A-A；
Fig. 5 is the structural schematic diagram of cold plate in a kind of anti-thermal runaway battery of the offer of the utility model embodiment two；
Fig. 6 is the sectional view in a kind of anti-thermal runaway battery of the offer of the utility model embodiment two at cold plate A-A.
In attached drawing:
1- shell 2- electrolyte 3- core
31- positive plate 32- diaphragm 33- negative electrode tab
4- cold plate 41- cold plate connection sheet 42- heats interlayer
43- fuse 5- battery cover board 6- rotating sheet
7- positive strap 8- negative straps 9- positive terminal
10- negative terminal
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of the utility model a part, instead of all the embodiments.Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered
When the range for belonging to the utility model protection.
It should be noted that the specification and claims of the utility model and term " first " in attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that the embodiments of the present invention described herein can be in addition to scheming herein
Sequence other than those of showing or describe is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Non-exclusive include in covering.
Embodiment one
Be a kind of anti-thermal runaway battery provided by the embodiment of the utility model referring to attached drawing 1, including shell 1, electrolyte 2,
Core 3, cold plate 4, battery cover board 5, rotating sheet 6, positive strap 7, negative straps 8, positive terminal 9 and negative terminal
10, wherein 1 upper end of shell is equipped with opening, and the electrolyte 2, core 3 and cold plate 4 are located in the shell 1, described
Battery cover board 5 is sealed on the upper end opening of the shell 1, and the rotating sheet 6 is arranged in the battery cover board 5, the overturning
Piece 6 is electrically connected with the battery cover board 5, and the lower surface of described cover board one end is arranged in the positive strap 7, and the anode is even
7 one end of contact pin is electrically connected with the core 3, and the other end is electrically connected with the positive terminal 9, described in the correspondence of positive terminal 9
The position of positive strap 7 is arranged in the upper surface of the cover board, and the positive terminal 9 and the positive strap 7 are and institute
State the electrical connection of battery cover board 5, the negative straps 8 are located at the lower surface of the cover board other end, described negative electrode tab one end and
The core 3 is electrically connected, and the other end is electrically connected with the negative terminal 10, the corresponding negative straps of the negative terminal 10
8 position is located at the upper surface of the cover board, and the negative terminal 10 and the negative straps 8 pass through insulation spacer or other
Insulation system and the battery cover board 5 insulate.
Referring to attached drawing 2, the core 3 is sequentially stacked and is wound by positive plate 31, diaphragm 32 and negative electrode tab 33 and formed, and is electrolysed
Liquid 2 is permeated in core 3, and the positive plate 31 of the core 3 is electrically connected with the positive strap 7, the negative electrode tab of the core 3
33 are electrically connected with the negative straps 8.
Referring to attached drawing 3 and attached drawing 4, the position that 4 upper end of cold plate corresponds to anode connection sheet 7 connects equipped with cold plate
Contact pin 41, the cold plate connection sheet 41 are electrically connected with the positive strap 7 of the battery；The is equipped with inside the cold plate 4
One cavity and the second cavity, first cavity and the second cavity are separated by heating interlayer 42, and the hot melt interlayer 42 is by low
Melting material composition, reaching will melt after certain temperature, be equipped with fuse 43 in the hot melt interlayer 42, the fuse 43 and
The positive strap 7 is in parallel, and the overcurrent that the overcurrent blowout current of the fuse 43 is less than the anode connection sheet 7 is molten
Power-off stream, when being formed with guarantee short circuit, the positive strap 7 that fuse 43 is capable of preferential battery fuses, outside the cold plate 4
Surface is respectively equipped with the second refrigeration of the first refrigerating fluid injection orifice for connecting first cavity and connection second cavity
First refrigerant is injected first cavity by the first refrigerant injection orifice, made by described second by liquid injection orifice
Second refrigerant is injected second cavity by cryogen injection orifice, and when the fuse 43 fuses, the hot melt interlayer 42 is heated
When thawing, first refrigerant is contacted with the second refrigerant occurs the endothermic reaction；In order to avoid the cold plate 4 is electric
It solves liquid 2 to corrode, the shell of the cold plate 4 is made of corrosion resistant metal material.
The positive strap 7 is equipped with elongated transverse opening at the position close to the positive terminal 9, with reduction and institute
The connection area for stating positive terminal 9 guarantees that positive strap 7 can fuse from the opening in time when forming short circuit, can
Selection of land can also reduce the connection area of positive strap 7 Yu the positive terminal 9 otherwise, such as be arranged elongated
Connecting neck portion.
The battery cover board 5 is arranged close to one end of negative terminal 10, when the pressure in battery persistently increases in the rotating sheet 6
When the big corresponding pressure value to the rotating sheet 6, the rotating sheet 6 can be overturn upward, rotating sheet 6 abut the abutting end face of column with
The negative terminal 10 abuts, so that the battery cover board 5 and the negative terminal 10 are electrically connected to form short circuit.
Accordingly, when battery because disconnected short circuit or electrically unbalanced when causing inside battery air pressure excessive, rotating sheet 6 is upward
Overturning, the abutting column of rotating sheet 6 are electrically connected with the negative terminal 10, and the battery cover board 5 is electrically connected with the negative terminal 10
It connects, electric current is followed by fuse 43, positive terminal 9, battery cover board 5 and the negative terminal 10 in positive strap 7, cold plate
And short circuit is formed, since the overcurrent blowout current of the anode connection sheet 7 is greater than the overcurrent blowout current of the fuse,
So the preferential fuse wire 43 of electric current, the heat that the fusing of fuse 43 generates continues to cause the fusing of hot melt interlayer 42, makes institute
The second refrigerating fluid contact of the first refrigerating fluid and the second cavity of 4 first cavity of cold plate is stated, and then the endothermic reaction occurs, to inhale
The heat that battery generates is received, battery thermal failure is avoided；Fuse 43 fuse after, the positive strap 7 then fuses, cutting with
The electrical connection of battery roll core 3, double protection battery.
Embodiment two
Referring to attached drawing 1, the utility model embodiment two provides a kind of anti-thermal runaway battery, including shell 1, electrolyte 2,
Core 3, cold plate 4, battery cover board 5, rotating sheet 6, positive strap 7, negative straps 8, positive terminal 9 and negative terminal
10, wherein 1 upper end of shell is equipped with opening, and the electrolyte 2, core 3 and cold plate 4 are located in the shell 1, described
Battery cover board 5 is sealed on the upper end opening of the shell 1, and the rotating sheet 6 is arranged in the battery cover board 5, the overturning
Piece 6 is electrically connected with the battery cover board 5, and the lower surface of described cover board one end is arranged in the positive strap 7, and the anode is even
7 one end of contact pin is electrically connected with the core 3, and the other end is electrically connected with the positive terminal 9, described in the correspondence of positive terminal 9
The position of positive strap 7 is arranged in the upper surface of the cover board, and the positive terminal 9 and the positive strap 7 are and institute
State the electrical connection of battery cover board 5, the negative straps 8 are located at the lower surface of the cover board other end, described negative electrode tab one end and
The core 3 is electrically connected, and the other end is electrically connected with the negative terminal 10, the corresponding negative straps of the negative terminal 10
8 position is located at the upper surface of the cover board, and the negative terminal 10 and the negative straps 8 pass through insulation spacer or other
Insulation system and the battery cover board 5 insulate.
The structure of the core 3 is the same as example 1, and details are not described herein again.
The positive strap 7 is equipped with hatch frame identical with the embodiment one or elongated neck structure, herein
It repeats no more.
The setting position of the rotating sheet 6 and working principle are as in the first embodiment, details are not described herein again.
Referring to attached drawing 5 and attached drawing 6, it is equipped with third cavity inside the cold plate 4, the outer surface of the cold plate 4 is equipped with
Third refrigerant is injected institute by the third refrigerant injection orifice by the third refrigerating fluid injection orifice for connecting the third cavity
Third cavity is stated, the third refrigerant is decalescence material, and the decalescence material can be paraffin, thiosulfuric acid
Sodium, stearic acid or myristic acid etc., when battery temperature is increased to certain value, phase-change material starts decalescence, drops to battery
Temperature, and then achieve the purpose that prevent battery high-temperature from failing；In order to avoid the cold plate 4 is corroded by electrolyte 2, the cold plate
4 are made of corrosion resistant metal material.
Accordingly, when battery because disconnected short circuit or electrically unbalanced when causing inside battery air pressure excessive, rotating sheet 6 is upward
Overturning, the abutting column of rotating sheet 6 are electrically connected with the negative terminal 10, and the battery cover board 5 is electrically connected with the negative terminal 10
It connects, electric current forms short circuit, fusing anode followed by positive strap 7, positive terminal 9, battery cover board 5 and negative terminal 10
Connection sheet 7 protects battery so that cutting is electrically connected with battery roll core 3；At the same time, the phase transformation of the third cavity is inhaled
Hot material starts phase transformation, to absorb the heat of battery generation, avoids battery thermal failure.
Embodiment three
The utility model embodiment three provides a kind of anti-thermal runaway battery, including shell, electrolyte, core, battery cover
Plate, rotating sheet, positive strap, negative straps, positive terminal and negative terminal, the shell are made of cold plate, specifically
Two sides on ground, the shell are made of cold plate, and the cold plate is one described in the embodiment one or embodiment two
Kind cold plate, the shell, electrolyte, core, battery cover board, rotating sheet, positive strap, negative straps, positive terminal
It is similar with embodiment one or embodiment two with the working principle of the structure of negative terminal, connection relationship and battery, herein no longer
It repeats.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
Above embodiments only express the several embodiments of the utility model, and the description thereof is more specific and detailed, but simultaneously
The limitation to utility model patent range therefore cannot be interpreted as.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this reality
With novel protection scope.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of anti-thermal runaway battery, including shell (1), electrolyte (2), core (3), battery cover board (5), positive terminal (9),
Negative terminal (10) and rotating sheet (6), the electrolyte (2) and core (3) are located in the shell (1), the battery cover board
(5) it is sealed on the shell (1) upper end, the positive terminal (9) and the negative terminal (10) are located at the battery cover
Plate (5) both ends, the positive terminal (9) are electrically connected with the battery cover board (5) and core (3) respectively, the negative terminal
(10) it is electrically connected with the core (3)；
The rotating sheet (6) is located in the battery cover board (5), when the rotating sheet (6) is in unturned state, the electricity
Pond cover board (5) and the negative terminal (10) are insulated, when the rotating sheet (6) is in the state being flipped up, the battery cover
Plate (5) is electrically connected with the negative terminal (10)；It is characterized in that,
It further include cold plate (4), the cold plate (4) is located in the shell (1) or a part of the composition shell (1),
It is equipped with cavity inside the cold plate (4), is filled with refrigerant in the cavity.
2. a kind of anti-thermal runaway battery according to claim 1, which is characterized in that it further include positive strap (7), it is described
Positive strap (7) is electrically connected between the positive terminal (9) and core (3)；
The cold plate (4) includes hot melt interlayer (42) and fuse (43), and the hot melt interlayer (42) is by the cold plate (4)
It is divided into the first cavity and the second cavity, the fuse (43) is located in the hot melt interlayer (42), the fuse (43)
It is in parallel with the positive strap (7).
3. a kind of anti-thermal runaway battery according to claim 2, which is characterized in that the overcurrent of the fuse (43) fuses
Electric current is less than the overcurrent blowout current of the positive strap (7).
4. a kind of anti-thermal runaway battery according to claim 3, which is characterized in that the positive strap (7) is close
The position of the positive terminal (9) is equipped with elongated transverse opening or elongated connecting neck portion.
5. a kind of anti-thermal runaway battery according to claim 4, which is characterized in that the hot melt interlayer (42) is by low melting point
Material composition.
6. a kind of anti-thermal runaway battery according to claim 5, which is characterized in that the cold plate (4) further includes first
Refrigerant injection orifice and second refrigerant injection orifice, the first refrigerant injection orifice are connected to first cavity, and described
Two refrigerant injection orifices are connected to second cavity.
7. a kind of anti-thermal runaway battery according to claim 6, which is characterized in that first cavity is filled with the first system
Cryogen, second cavity is filled with the second refrigerant that the endothermic reaction can occur with first refrigerant.
8. a kind of anti-thermal runaway battery according to claim 1, which is characterized in that the refrigerant is decalescence material
Material.
9. a kind of anti-thermal runaway battery according to claim 8, which is characterized in that the decalescence material be paraffin,
Sodium thiosulfate, stearic acid or myristic acid.
10. a kind of anti-thermal runaway battery according to claim 1, which is characterized in that the shell of the cold plate (4) is by resistance to
Corrode metal material composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821490903.2U CN208873850U (en) | 2018-09-12 | 2018-09-12 | A kind of anti-thermal runaway battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821490903.2U CN208873850U (en) | 2018-09-12 | 2018-09-12 | A kind of anti-thermal runaway battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208873850U true CN208873850U (en) | 2019-05-17 |
Family
ID=66467486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821490903.2U Expired - Fee Related CN208873850U (en) | 2018-09-12 | 2018-09-12 | A kind of anti-thermal runaway battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208873850U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022237068A1 (en) * | 2021-05-11 | 2022-11-17 | 江苏正力新能电池技术有限公司 | Structure for preventing thermal runaway of battery, battery case and battery |
-
2018
- 2018-09-12 CN CN201821490903.2U patent/CN208873850U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022237068A1 (en) * | 2021-05-11 | 2022-11-17 | 江苏正力新能电池技术有限公司 | Structure for preventing thermal runaway of battery, battery case and battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190517 Termination date: 20210912 |