CN106785195A - A kind of lithium-ion-power cell and lithium battery module - Google Patents
A kind of lithium-ion-power cell and lithium battery module Download PDFInfo
- Publication number
- CN106785195A CN106785195A CN201611120162.4A CN201611120162A CN106785195A CN 106785195 A CN106785195 A CN 106785195A CN 201611120162 A CN201611120162 A CN 201611120162A CN 106785195 A CN106785195 A CN 106785195A
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- Prior art keywords
- lithium
- cavity
- ion
- containment vessel
- battery
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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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- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/058—Construction or manufacture
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a kind of lithium-ion-power cell and lithium battery module,The battery includes containment vessel and battery core bodies,The end of containment vessel is provided with seal cover board,Multiple radiating grooves for caving inward are provided with the outside of containment vessel,Battery core bodies are installed in containment vessel and are in contact with the bottom of radiating groove,Heat dissipation channel is formed between two neighboring radiating groove on the inside of battery core bodies and containment vessel,Cavity and gas channel are provided with seal cover board,One end of gas channel communicates with inside containment vessel,The other end of gas channel is communicated with cavity,Piston body and spring are provided with cavity,Piston body is provided with the sealing-plug for blocking gas channel,One end of spring is fixed on the piston body,The other end of spring is fixed on the side wall of cavity,Cavity is communicated by vertical through hole with outside,The bottom of vertical through hole is provided with ring-shaped step,The upper surface of ring-shaped step is welded with the metal film of covering ring-shaped step.The battery can be in battery gas release after keep battery normally use.
Description
Technical field
The present invention relates to power battery technology field, more particularly to a kind of lithium-ion-power cell and lithium battery module.
Background technology
Lithium ion battery is after the rechargeable battery of new generation grown up after MH-Ni batteries, because with operating voltage is high, energy
Metric density is big, security is good, lightweight, self discharge is small, have extended cycle life, memory-less effect, it is pollution-free the advantages of turn into new energy
The priority research areas of source automotive development.
With the progress and the appearance of new material of lithium ion battery technology, lithium ion battery security than conventional lithium from
Sub- battery improves a lot.Therefore, lithium ion battery increasingly develops toward maximization.Especially lithium-ion electric used for electric vehicle
Pond, typically using large-scale rectangular cell.And large-scale rectangular cell is big due to area, meteorism resistent ability is weak, is often led because of deformation
Cause whole bag impaired, security incident occur, cause battery life to terminate in advance, it is impossible to meet use requirement.While current all kinds of lithiums
The electrolyte of ion battery substantially uses carbonate group electrolyte.And filled using the lithium ion battery of carbonate group electrolyte
Electric discharge can produce heat when using, and electrolyte decomposition is produced a large amount of gases, with the carrying out of charge and discharge cycles, accumulation in battery
Amount of gas it is more and more, cause inner pressure of battery to rise, the security to battery brings hidden danger.
At present, general lithium-ion-power cell can set in shell end and sheet metal is set in safety valve, safety valve, when
After inner pressure of battery exceedes setting value, sheet metal can rupture so that energy sheds, so as to avoid battery explosion etc.
Peril occurs.But such safety valve once opening, also scrap therewith, it is impossible to reuses by battery.
The content of the invention
The present invention solves the technical problem of a kind of lithium-ion-power cell is provided, gas that can be in battery is let out
Battery is kept normally to use after putting.
In order to solve the above technical problems, one aspect of the present invention is：A kind of lithium-ion-power cell is provided,
Including containment vessel and battery core bodies, the end of the containment vessel is provided with seal cover board, is provided with multiple inside on the outside of the containment vessel
The radiating groove of depression, the battery core bodies are installed in the containment vessel and are in contact with the bottom of the radiating groove, the battery core
Heat dissipation channel is formed between two neighboring radiating groove on the inside of body and the containment vessel, it is gentle to be provided with cavity in the seal cover board
Circulation road, one end of the gas channel communicates with inside the containment vessel, the other end of the gas channel and the cavity
Communicate, piston body and spring be provided with the cavity, the piston body is provided with the sealing-plug for blocking the gas channel,
One end of the spring is fixed on the piston body, the other end of the spring is fixed on the side wall of the cavity, described
Cavity is communicated by vertical through hole with outside, and the bottom of the vertical through hole is provided with ring-shaped step, the ring-shaped step it is upper
Surface soldered has the metal film for covering the ring-shaped step.
Wherein, the A/F of the radiating groove is less than bottom width.
Wherein, one end that the gas channel is communicated with the cavity is set to flare openings, the sealing-plug be set to
The frustum shape that the flare openings match.
Wherein, it is additionally provided with cushion pad on the cavity side wall relative with the piston body.
Wherein, the spring is tower spring.
Wherein, the gas channel is inShape.
Wherein, the metal film is welded by ultrasonic bonding mode.
In order to solve the above technical problems, another technical solution used in the present invention is：A kind of lithium battery module, institute are provided
Stating lithium battery module includes multiple any of the above-described kind of lithium-ion-power cell, and the multiple lithium-ion-power cell is stacked successively
Fixed, the radiating groove of the two neighboring lithium-ion-power cell aligns to set and forms closed heat dissipation cavity, and the radiating
Insulating heat-conductive colloidal silica is provided with chamber.
Wherein, it is additionally provided with temperature sensor in the heat dissipation cavity.
The situation of prior art is different from, the beneficial effects of the invention are as follows：Concaved by being set in the outside of containment vessel
Sunken radiating groove, forms heat dissipation channel between the two neighboring radiating groove and battery core bodies on the inside of containment vessel, heat dissipation channel be used for be
The heat that inside battery is produced provides Free up Memory so that cell internal pressure tries one's best maintenance within a predetermined range, and if pressure
Power exceedes preset range, the internal pressure of battery is controlled in the range of setting, when inner pressure of battery increases, by gas channel
And the cooperation of piston body and spring, metal film rupture, and then gas of releasing can be caused, after gas of releasing, on piston body
Sealing-plug understands blocking airflow passage again, prevents battery leakage, it is ensured that the normal work of battery, and battery will not be made disposably to scrap.
Only need to weld metal film again, keep battery normally to use after being released therefore, it is possible to the gas in battery, can be with
Increase the meteorism resistent ability of battery, while increasing battery area of dissipation, effectively improve battery safety, and can effectively extend electricity
The working life in pond.
Brief description of the drawings
Fig. 1 is the external structure schematic diagram of embodiment of the present invention lithium-ion-power cell.
Fig. 2 is the schematic cross-sectional view of embodiment of the present invention lithium-ion-power cell.
Fig. 3 is the schematic cross-sectional view of another embodiment of embodiment of the present invention lithium-ion-power cell.
Fig. 4 is the structural representation of the seal cover board of embodiment of the present invention lithium-ion-power cell.
Fig. 5 is the structural representation of another embodiment of the seal cover board of embodiment of the present invention lithium-ion-power cell.
Fig. 6 is the structural representation of embodiment of the present invention lithium battery module.
Fig. 7 is the partial structurtes enlarged diagram of Fig. 6.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Refering to Fig. 1 and Fig. 2, the lithium-ion-power cell of the embodiment of the present invention includes containment vessel 1 and battery core bodies 2.
The end of containment vessel 1 is provided with seal cover board 3, and the outside of containment vessel 1 is provided with multiple radiating grooves 11 for caving inward, electricity
Core body 2 is installed in containment vessel 1 and is in contact with the bottom of radiating groove 11, and battery core bodies 2 dissipate with the two neighboring of the inner side of containment vessel 1
Heat dissipation channel 12 is formed between heat channel 11.
Because radiating groove 11 is to the sunken inside of containment vessel 1, therefore, battery core bodies 2 are in containment vessel 1 except the bottom with radiating groove 11
Outside end in contact, will not with contacting elsewhere in containment vessel 1, i.e. battery core bodies 2 not with the two neighboring radiating groove in the inside of containment vessel 1
Heat dissipation channel 12 between 11 is contacted.Heat dissipation channel 12 is used for providing a Free up Memory for the heat that inside battery is produced, and
Radiating groove 11 also increases the non-deformability of containment vessel 1 in itself, so can reduce inside battery by setting radiating groove 11
The increase of pressure, increases the meteorism resistent ability of battery, while increasing battery area of dissipation, effectively improves battery safety.
Containment vessel 1 can be manufactured using aluminum or steel material, therefore, in the outside of containment vessel 1, radiating groove 11 is set
Processing technology is fairly simple, it is only necessary to which the outside rolling to containment vessel 1 carries out conflict shaping, it is not necessary to increase extra material
Material, does not interfere with the intensity of containment vessel 1, will not increase the weight of containment vessel 1 yet, and low manufacture cost, production efficiency is high.
The contact area of battery core bodies 2 and containment vessel 1 is influenced whether in view of radiating groove 11, therefore, the opening of radiating groove 11
Width can be more than bottom width, as shown in figure 3, in one embodiment, the A/F of radiating groove 11 is more than bottom width,
To increase the contact area of battery core bodies 2 and containment vessel 1 as far as possible.
As shown in figure 4, cavity 31 and gas channel 32 are provided with seal cover board 3, one end and the containment vessel 1 of gas channel 32
Inside is communicated, and the other end of gas channel 32 is communicated with cavity 31, and gas channel 32 is preferably and is inShape.In cavity 31
Piston body 33 and spring 34 are provided with, piston body 33 is provided with the sealing-plug 35 for blocking gas channel 32, one end of spring 34
Be fixed on piston body 33, the other end of spring 34 is fixed on the side wall of cavity 31, cavity 31 by vertical through hole 36 with it is outer
Portion communicates, and the bottom of vertical through hole 36 is provided with ring-shaped step 37, and the upper surface of ring-shaped step 37 is welded with covering ring-shaped step
37 metal film 38.In the present invention, metal film 38 is welded preferably by ultrasonic bonding mode, to ensure welding quality.
Seal cover board 3 seals the upper end open of containment vessel 1, and when cell internal pressure is in normal range (NR), piston body 33 is received
Elastic force to spring 34 is tight against gas channel 32 so that the sealing gas channel 32 of sealing-plug 35 on piston body 33.When in battery
After portion's pressure exceedes setup pressure value, gas is discharged from gas channel 32, produces opposition to sealing-plug 35 so that piston
The compression spring 34 of body 33, after piston body 33 moves a segment distance, vertical through hole 36 is communicated with gas channel 32, too high air pressure
So that metal film 38 ruptures, so that gas discharge battery, can reduce the pressure of inside battery so that battery will not explode.And
Gas will not be discharged moment outward after being subject to the stop of metal film 38, can reduce the injury caused by the gas that moment goes out.
Release after gas, piston body 33 is subject to the elastic force of spring 34 tight against gas channel 32 again so that gas channel 32 is close again
Blocking 35 is sealed, and can prevent electrolyte from leaking outside, and will not scrap battery.But reuse battery if desired, it is necessary to
A piece of new metal film 38 is welded again in the upper surface of the ring-shaped step 37 in vertical through hole 36.
Further, in the present embodiment, cushion pad 39 is additionally provided with the side wall relative with piston body 33 of cavity 31, is delayed
Rushing cushion block 39 has certain elasticity, can play spacing and cushioning effect to piston body 33, prevents piston body 34 from colliding cavity 31
Side wall.
Spring 34 can be tower spring, and tower spring will not be stuck by debris after entering debris in cavity 31, in order to avoid
The risk for bringing gas to release.
In view of the sealing of gas channel 32, as shown in figure 5, one end that gas channel 32 is communicated with cavity 31 can set
It is flare openings, sealing-plug 35 is set to the frustum shape matched with flare openings.Ensure that sealing-plug 35 can be completely close
Block gas channel 32.
The present invention also provides a kind of lithium battery module, and as shown in Figure 6 and Figure 7, lithium battery module includes multiple above-mentioned implementations
The lithium-ion-power cell 100 of example, multiple lithium-ion-power cells 100 stack fixation, two neighboring lithium ion power electricity successively
The radiating groove 11 in pond 100 aligns to set and forms closed heat dissipation cavity 101, and is provided with insulating heat-conductive silica gel in heat dissipation cavity 101
Body 102.That is, the outside of multiple lithium-ion-power cells 100 is connected with each other, two neighboring lithium-ion-power cell 100
On radiating groove 11 it is corresponding so that just formed 2 times of heat dissipation cavities of radiating groove 11 101 of volume.
Due to not being to completely attach between multiple lithium-ion-power cells 100, heat dissipation cavity 101 forms conductive structure, increases
The heat-dissipating space of battery, improves security performance, increases the service life.
As shown in fig. 7, being additionally provided with temperature sensor 103 in heat dissipation cavity 101, detect adjacent by temperature sensor 103
Temperature between two lithium-ion-power cells 100, so for battery intermediate position points enter trip temperature sampling, improves temperature sampling
Precision, is conducive to the radiating treatment of battery.
Through the above way, the lithium-ion-power cell of the embodiment of the present invention and lithium battery module set by containment vessel
Radiating groove is put, while setting seal cover board in the end of containment vessel, Free up Memory can be provided for the heat that inside battery is produced,
And it is sub- when exceeding predetermined value in battery, carry out gas and release but will not waste battery such that it is able to the gas in battery
Battery is kept normally to use after releasing.
Embodiments of the invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (9)
1. a kind of lithium-ion-power cell, it is characterised in that including containment vessel and battery core bodies, the end of the containment vessel is provided with close
Capping plate, is provided with multiple radiating grooves for caving inward on the outside of the containment vessel, the battery core bodies are installed in the containment vessel
And be in contact with the bottom of the radiating groove, formed between the two neighboring radiating groove on the inside of the battery core bodies and the containment vessel
Heat dissipation channel, is provided with cavity and gas channel in the seal cover board, inside one end of the gas channel and the containment vessel
Communicate, the other end of the gas channel is communicated with the cavity, piston body and spring, the piston body are provided with the cavity
It is provided with the sealing-plug for blocking the gas channel, one end of the spring is fixed on the piston body, the spring
The other end be fixed on the side wall of the cavity, the cavity is communicated by vertical through hole with outside, the vertical through hole
Bottom is provided with ring-shaped step, and the upper surface of the ring-shaped step is welded with the metal film for covering the ring-shaped step.
2. lithium-ion-power cell according to claim 1, it is characterised in that the A/F of the radiating groove is less than bottom
End width.
3. lithium-ion-power cell according to claim 1, it is characterised in that the gas channel is communicated with the cavity
One end be set to flare openings, the sealing-plug is set to the frustum shape matched with the flare openings.
4. lithium-ion-power cell according to claim 1, it is characterised in that the cavity is relative with the piston body
Cushion pad is additionally provided with the wall of side.
5. the lithium-ion-power cell according to claim 1,3 or 4, it is characterised in that the spring is tower spring.
6. lithium-ion-power cell according to claim 1, it is characterised in that the gas channel is inShape.
7. lithium-ion-power cell according to claim 1, it is characterised in that the metal film passes through ultrasonic bonding side
Formula is welded.
8. a kind of lithium battery module, it is characterised in that the lithium battery module includes multiple according to any one of claim 1 to 7
Described lithium-ion-power cell, the multiple lithium-ion-power cell stacks fixation successively, and the two neighboring lithium ion is moved
The radiating groove of power battery aligns to set to be formed and insulating heat-conductive colloidal silica is provided with closed heat dissipation cavity, and the heat dissipation cavity.
9. lithium battery module according to claim 8, it is characterised in that be additionally provided with temperature sensor in the heat dissipation cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611120162.4A CN106785195A (en) | 2016-12-08 | 2016-12-08 | A kind of lithium-ion-power cell and lithium battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611120162.4A CN106785195A (en) | 2016-12-08 | 2016-12-08 | A kind of lithium-ion-power cell and lithium battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106785195A true CN106785195A (en) | 2017-05-31 |
Family
ID=58881300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611120162.4A Pending CN106785195A (en) | 2016-12-08 | 2016-12-08 | A kind of lithium-ion-power cell and lithium battery module |
Country Status (1)
| Country | Link |
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| CN (1) | CN106785195A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108573810A (en) * | 2018-05-22 | 2018-09-25 | 安徽普和电子有限公司 | A kind of interior explosion-proof capacitor device |
| CN110168772A (en) * | 2017-08-29 | 2019-08-23 | 株式会社Lg化学 | Pouch-typed secondary battery including air discharge guide device |
| CN112002959A (en) * | 2020-09-07 | 2020-11-27 | 南通鼎鑫电池有限公司 | Phase change material for thermal management of communication base station battery |
| CN116111270A (en) * | 2023-04-13 | 2023-05-12 | 北京前景无忧消防科技有限公司 | Battery capable of discharging reaction gas |
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| CN203013810U (en) * | 2012-12-21 | 2013-06-19 | 海芝通电子(深圳)有限公司 | Cover plate structure of lithium battery |
| CN105006537A (en) * | 2015-06-12 | 2015-10-28 | 唐海航 | Cover plate of lithium-ion power battery |
| CN205752317U (en) * | 2016-05-19 | 2016-11-30 | 深圳市金宇宙能源有限公司 | A kind of easy heat radiation lithium battery |
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| JP2005216776A (en) * | 2004-01-30 | 2005-08-11 | Yuasa Corp | Sealed storage battery and charger for the same |
| CN102290538A (en) * | 2011-07-22 | 2011-12-21 | 奇瑞汽车股份有限公司 | Lithium-ion power battery shell and power battery |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110168772A (en) * | 2017-08-29 | 2019-08-23 | 株式会社Lg化学 | Pouch-typed secondary battery including air discharge guide device |
| CN110168772B (en) * | 2017-08-29 | 2021-11-09 | 株式会社Lg化学 | Pouch-shaped secondary battery including exhaust gas guide device |
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| CN108573810A (en) * | 2018-05-22 | 2018-09-25 | 安徽普和电子有限公司 | A kind of interior explosion-proof capacitor device |
| CN112002959A (en) * | 2020-09-07 | 2020-11-27 | 南通鼎鑫电池有限公司 | Phase change material for thermal management of communication base station battery |
| CN116111270A (en) * | 2023-04-13 | 2023-05-12 | 北京前景无忧消防科技有限公司 | Battery capable of discharging reaction gas |
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Application publication date: 20170531 |