CN209526155U - A kind of battery for preventing mechanical abuse from causing thermal runaway - Google Patents
A kind of battery for preventing mechanical abuse from causing thermal runaway Download PDFInfo
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- CN209526155U CN209526155U CN201821850722.6U CN201821850722U CN209526155U CN 209526155 U CN209526155 U CN 209526155U CN 201821850722 U CN201821850722 U CN 201821850722U CN 209526155 U CN209526155 U CN 209526155U
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Battery Electrode And Active Subsutance (AREA)
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Abstract
The utility model discloses a kind of battery for preventing mechanical abuse from causing thermal runaway.Positive pole ear and negative lug are located at the side of inside battery unit；The quantity of inside battery unit is N number of, each inside battery unit includes successively from top to bottom diaphragm, positive electrode, plus plate current-collecting body, positive electrode, diaphragm, negative electrode material, negative current collector, negative electrode material and diaphragm, and positive electrode, negative electrode material are respectively coated by the two sides of plus plate current-collecting body, negative current collector；It is respectively arranged with collector on plus plate current-collecting body and negative current collector and reserves piece, collector reserves piece and is used to electric current leading to positive pole ear and negative lug respectively, plus plate current-collecting body, negative current collector use symmetrical fragile structures, and the junction of collector junior unit is relatively fragile, so that battery is when by mechanical damage, collector is partially broken away from, and whole internal short-circuit is limited in and is destroyed in range, battery thermal runaway caused by mechanical damage can be effectively prevent.
Description
Technical field
The utility model relates to battery research fields, more particularly to a kind of electricity for preventing mechanical abuse from causing thermal runaway
Pond.
Background technique
Development has become the deterioration of alleviation current environment as the new-energy automobile of energy source using Vehicular dynamic battery and the energy is tight
Scarce important channel, high activity, the high circulation service life, high-energy density lithium-ion-power cell be pure electric automobile continual mileage
It brings brilliant and is obviously improved, but the even explosion of kindling caused by power battery thermal runaway simultaneously repeated, and threaten
A kind of effective thermal runaway means of defence is badly in need of in the safety of life and property of passenger, the industry application of electric car.
When single battery, battery modules or battery system will generate serious deformation when by mechanical impact, and then lead
The puncture of diaphragm is caused, battery internal short-circuit is caused.When internal short-circuit occurs, inside battery energy is released in moment, and then is caused
The accidents such as battery catches fire, burning even explosion.Since battery diaphragm is very fragile, tolerance of the battery for mechanical damage
It is very low, when battery by collide, needle pierces when, it is easy to trigger the thermal runaway of battery, and there is presently no effectively prevent machinery
The method for destroying the battery thermal runaway accident caused.
Although electrokinetic cell system will pass through stringent test before listing, such as: overcharging, is short-circuit, squeezing etc.,
It is that thermal runaway accident still remains.Meanwhile battery needle thorn and squeeze be also testing standard in be most difficult to by.
Currently, for mechanical damage cause thermal runaway accident prevention and means of defence mainly from the following aspects exhibition
It opens.First is that optimization battery box structure, increases battery case structural strength；Second is that strengthening battery cell structure, such as increase outside battery
Thickness of the shell；Third is that carrying out early warning etc. for the generation of thermal runaway in advance using prediction policy.
Method for strengthening battery box structure and monomer structure, will increase the total quality of battery case, is unfavorable for vehicle
Lightweight, moreover, battery case and single battery are also that can wreck, and thermal runaway accident can not be kept away when impact force is sufficiently large
Exempt from.For the method for early warning, the thing more fled from the time, and the generation of thermal runaway accident can not be changed can only be provided to passenger
It is real.Therefore, above method is all without fundamentally solving battery cell for the tolerance of mechanical damage.
Utility model content
The purpose of the utility model is to provide a kind of batteries for preventing mechanical abuse from causing thermal runaway, can effectively prevent machinery
Destroy caused battery thermal runaway.
To achieve the above object, the utility model provides following scheme:
A kind of battery for preventing mechanical abuse from causing thermal runaway, the battery include: shell, positive pole ear, negative lug,
Inside battery unit and electrolyte；The positive pole ear and the negative lug are located at the side of the inside battery unit；Institute
State inside battery unit quantity be it is N number of, each inside battery unit successively includes diaphragm, positive electrode, just from top to bottom
Pole collector, positive electrode, diaphragm, negative electrode material, negative current collector, negative electrode material and diaphragm, it is the positive electrode, described negative
Pole material is respectively coated by the two sides of the plus plate current-collecting body, the negative current collector；The plus plate current-collecting body and the cathode
It is respectively arranged with collector on collector and reserves piece, the collector reserves piece for electric current to be led to the positive pole respectively
Ear and the negative lug, the plus plate current-collecting body and the negative current collector are all made of symmetrical fragile structures, and afflux
The junction of body junior unit is relatively fragile；The shell is set to the outside of multiple inside battery units fitted closely,
The electrolyte is perfused between each inside battery unit inside the housing before cell package.
Optionally, the plus plate current-collecting body, the negative current collector surface use engraved structure, the engraved structure filling
There are the positive electrode, the negative electrode material.
Optionally, the plus plate current-collecting body, the negative current collector surface use scoring structure, the scoring structure filling
There are the positive electrode, the negative electrode material.
Optionally, the shape of the engraved structure or scoring structure is arbitrarily variable.
Optionally, the engraved structure or the scoring structure divide the plus plate current-collecting body, the negative current collector
At several plus plate current-collecting body junior units, negative current collector junior unit；The collector reserves piece and the plus plate current-collecting body is small
Unit, the negative current collector junior unit are connected.
Optionally, it is fitted closely between each inside battery unit.
Optionally, inside battery unit number is determined according to capacitance and cell thickness.
Optionally, the plus plate current-collecting body and the negative current collector use the metal material with satisfactory electrical conductivity.
According to specific embodiment provided by the utility model, the utility model discloses following technical effects: this is practical new
Type provides a kind of battery for preventing mechanical abuse from causing thermal runaway, and wherein plus plate current-collecting body, negative current collector are using symmetrical easy
Broken structure, when by mechanical damage, the current collector structure near breakdown point will be disengaged from plus plate current-collecting body, negative current collector master
Body prevents battery to be destroyed the extension of part thermal runaway to cut off the internal short-circuit electric current near breakdown point.Therefore this is practical new
Whole internal short-circuit can be limited in and be destroyed in range, without causing electricity when by mechanical damage by the battery in type
The internal short-circuit and thermal runaway of pond entirety.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is outside batteries structure chart in the utility model；
Fig. 2 is inside battery cellular construction three-view diagram in the utility model；
Fig. 3 is the partial enlarged view of Fig. 2 in the utility model；
Fig. 4 is inside battery cellular construction axonometric drawing in the utility model；
Fig. 5 is the partial enlarged view of Fig. 4 in the utility model；
Fig. 6 is battery plus plate current-collecting body structural schematic diagram in the utility model；
Fig. 7 is battery cathode current collector structure schematic diagram in the utility model；
Fig. 8 is the utility model principle figure；
Fig. 9 is a kind of schematic diagram of the collector embodiment with rectangular engraved structure in the utility model；
Figure 10 is a kind of schematic diagram of the collector embodiment with rectangular scoring structure in the utility model；
Figure 11 is a kind of schematic diagram of the collector embodiment with arc scoring structure in the utility model；
Figure 12 is a kind of schematic diagram of the collector embodiment with staggeredly engraved structure in the utility model；
Figure 13 is a kind of schematic diagram of the collector embodiment with staggeredly scoring structure in the utility model；
Figure 14 is a kind of schematic diagram of the collector embodiment with round scoring structure in the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of batteries for preventing mechanical abuse from causing thermal runaway, can effectively prevent machinery
Destroy caused battery thermal runaway.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Fig. 1 is outside batteries structure chart in the utility model；Fig. 2 is that inside battery cellular construction three regards in the utility model
Figure；Fig. 3 is the partial enlarged view of Fig. 2 in the utility model；Fig. 4 is inside battery cellular construction axonometric drawing in the utility model；
Fig. 5 is the partial enlarged view of Fig. 4 in the utility model；Fig. 6 is battery plus plate current-collecting body structural schematic diagram in the utility model；Figure
7 be battery cathode current collector structure schematic diagram in the utility model.As shown in figs. 1-7, one kind prevents mechanical abuse from causing heat mistake
The battery of control, the battery include: shell 101, positive pole ear 102, negative lug 103, inside battery unit 200 and electrolysis
Liquid；The positive pole ear 102 and the negative lug 103 are located at the side of the inside battery unit；The inside battery list
The quantity of member be it is N number of, regularly units alternately inside battery unit occurs, and each inside battery unit is from top to bottom successively
Including diaphragm 203, positive electrode 204, plus plate current-collecting body 206, positive electrode 204, diaphragm 203, negative electrode material 205, cathode collection
Fluid 207, negative electrode material 205 and diaphragm 203, the positive electrode 204, the negative electrode material 205 be respectively coated by it is described just
The two sides of pole collector 206, the negative current collector 207；Divide on the plus plate current-collecting body 206 and the negative current collector 207
It is not provided with plus plate current-collecting body and reserves piece 201 and the reserved piece 202 of negative current collector, the collector is reserved piece and is used for electric current point
The positive pole ear 102 and the negative lug 103, the plus plate current-collecting body 206 and the negative current collector 207 are not led to
It is all made of symmetrical fragile structures；When by mechanical damage, current collector structure near breakdown point together with positive electrode 204,
Negative electrode material 205 will be detached from from battery main body, to cut off the internal short-circuit electric current near breakdown point, battery be prevented to be destroyed portion
Divide the extension of thermal runaway.Battery afflux liquid with the structure can limit whole internal short-circuit when by mechanical damage
It is being destroyed in range, internal short-circuit and thermal runaway without causing battery entirety.
The shell 101 is set to the outside of multiple inside battery units fitted closely, and the electrolyte is in electricity
Before the encapsulation of pond between each inside battery unit of perfusion inside the housing.
Fig. 8 is the utility model principle figure.206-1 indicates that collector junior unit 1,206-2 indicate the small list of collector in figure
Member 2.
The plus plate current-collecting body 206,207 surface of the negative current collector are all made of engraved structure or scoring structure, described
Engraved structure is filled with the positive electrode 204, the negative electrode material 205.The shape of the engraved structure or scoring structure is
Arbitrarily variable, but it is to ensure that the structure and electric current handling capacity of battery entirety.In the base for not increasing cell thickness and weight
On plinth, the capacity of positive and negative anodes active material in single battery can be increased, to increase battery whole volume, improve the energy content of battery
Density.
The plus plate current-collecting body 206, the negative current collector 207 are divided by the engraved structure or the scoring structure
At several plus plate current-collecting body junior units, negative current collector junior unit；The collector reserves piece and the plus plate current-collecting body is small
Unit, the negative current collector junior unit are connected.Electric current can pass freely through each plus plate current-collecting body junior unit, negative pole currect collecting
Body junior unit.Fig. 9 is a kind of schematic diagram of the collector embodiment with rectangular engraved structure in the utility model；Figure 10 is this
A kind of schematic diagram of the collector embodiment with rectangular scoring structure in utility model；Figure 11 is a kind of tool in the utility model
There is the schematic diagram of the collector embodiment of arc scoring structure；Figure 12 is a kind of with staggeredly engraved structure in the utility model
The schematic diagram of collector embodiment；Figure 13 is that a kind of collector embodiment with staggeredly scoring structure is shown in the utility model
It is intended to；Figure 14 is a kind of schematic diagram of the collector embodiment with round scoring structure in the utility model.
It is fitted closely between each inside battery unit.
Inside battery unit number is determined according to capacitance and cell thickness.
The plus plate current-collecting body 206 and the negative current collector 207 are using the metal material with satisfactory electrical conductivity.
A kind of battery for preventing mechanical abuse from causing thermal runaway provided by the utility model, wherein plus plate current-collecting body, cathode
Collector uses symmetrical fragile structures, and the junction of collector junior unit is relatively fragile, when by mechanical damage, breaks
Current collector structure near bad point will be disengaged from plus plate current-collecting body, negative pole currect collecting phosphor bodies, to cut off interior short near breakdown point
Road electric current prevents battery to be destroyed the extension of part thermal runaway.Therefore the battery in the utility model is when by mechanical damage,
Whole internal short-circuit can be limited in and be destroyed in range, internal short-circuit and thermal runaway without causing battery entirety.Meanwhile
Since positive and negative anodes collector uses hollow out or scoring structure, on the basis of not increasing cell thickness and weight, Ke Yizeng
The capacity of positive and negative anodes active material in polymeric monomer battery improves battery energy density to increase battery whole volume.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Specific case used herein is expounded the principles of the present invention and embodiment, above embodiments
Explanation be merely used to help understand the system and its core concept of the utility model；Meanwhile for the general technology of this field
Personnel, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.In conclusion
The content of the present specification should not be construed as a limitation of the present invention.
Claims (6)
1. a kind of battery for preventing mechanical abuse from causing thermal runaway, which is characterized in that the battery include: shell, positive pole ear,
Negative lug, inside battery unit and electrolyte；The positive pole ear and the negative lug are located at the inside battery unit
Side；The quantity of the inside battery unit be it is N number of, each inside battery unit successively includes diaphragm, just from top to bottom
Pole material, plus plate current-collecting body, positive electrode, diaphragm, negative electrode material, negative current collector, negative electrode material and diaphragm, the anode material
Material, the negative electrode material are respectively coated by the two sides of the plus plate current-collecting body, the negative current collector；The plus plate current-collecting body and
It is respectively arranged with collector on the negative current collector and reserves piece, the collector reserves piece for electric current to be led to institute respectively
Positive pole ear and the negative lug are stated, the plus plate current-collecting body and the negative current collector are all made of symmetrical fragile structures,
And the junction of collector junior unit is relatively fragile；The shell is set to multiple inside battery units fitted closely
Outside, the electrolyte is perfused between each inside battery unit inside the housing before cell package.
2. the battery according to claim 1 for preventing mechanical abuse from causing thermal runaway, which is characterized in that the anode collection
Body, the negative current collector surface are all made of engraved structure, and the engraved structure is filled with the positive electrode, the cathode material
Material, the shape of the engraved structure be it is arbitrarily variable, the engraved structure is by the plus plate current-collecting body, the negative current collector
It is divided into several plus plate current-collecting body junior units, negative current collector junior unit；The collector reserves piece and the anode collection
Body junior unit, the negative current collector junior unit are connected.
3. the battery according to claim 1 for preventing mechanical abuse from causing thermal runaway, which is characterized in that the anode collection
Body, the negative current collector surface use scoring structure, and the scoring structure is filled with the positive electrode, the cathode material
Material, the shape of the scoring structure be it is arbitrarily variable, the scoring structure is by the plus plate current-collecting body, the negative current collector
It is divided into several plus plate current-collecting body junior units, negative current collector junior unit；The collector reserves piece and the anode collection
Body junior unit, the negative current collector junior unit are connected.
4. the battery according to claim 1 for preventing mechanical abuse from causing thermal runaway, which is characterized in that in each battery
It is fitted closely between portion's unit.
5. the battery according to claim 1 for preventing mechanical abuse from causing thermal runaway, which is characterized in that inside battery unit
Number is determined according to capacitance and cell thickness.
6. the battery according to claim 1 for preventing mechanical abuse from causing thermal runaway, which is characterized in that the anode collection
Body and the negative current collector use the metal material with satisfactory electrical conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821850722.6U CN209526155U (en) | 2018-11-12 | 2018-11-12 | A kind of battery for preventing mechanical abuse from causing thermal runaway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821850722.6U CN209526155U (en) | 2018-11-12 | 2018-11-12 | A kind of battery for preventing mechanical abuse from causing thermal runaway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209526155U true CN209526155U (en) | 2019-10-22 |
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ID=68213356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821850722.6U Active CN209526155U (en) | 2018-11-12 | 2018-11-12 | A kind of battery for preventing mechanical abuse from causing thermal runaway |
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| CN (1) | CN209526155U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494339A (en) * | 2018-11-12 | 2019-03-19 | 北京理工大学 | A kind of battery for preventing mechanical abuse from causing thermal runaway |
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2018
- 2018-11-12 CN CN201821850722.6U patent/CN209526155U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494339A (en) * | 2018-11-12 | 2019-03-19 | 北京理工大学 | A kind of battery for preventing mechanical abuse from causing thermal runaway |
| CN109494339B (en) * | 2018-11-12 | 2024-04-16 | 北京理工大学 | Battery for preventing thermal runaway caused by mechanical abuse |
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