CN216120501U - High-temperature-resistant lithium ion battery structure - Google Patents
High-temperature-resistant lithium ion battery structure Download PDFInfo
- Publication number
- CN216120501U CN216120501U CN202121738558.1U CN202121738558U CN216120501U CN 216120501 U CN216120501 U CN 216120501U CN 202121738558 U CN202121738558 U CN 202121738558U CN 216120501 U CN216120501 U CN 216120501U
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- CN
- China
- Prior art keywords
- heat dissipation
- aluminum
- temperature
- packaging mechanism
- plastic
- 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.)
- Expired - Fee Related
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 19
- 230000017525 heat dissipation Effects 0.000 claims abstract description 47
- 239000004033 plastic Substances 0.000 claims abstract description 41
- 229920003023 plastic Polymers 0.000 claims abstract description 41
- 239000004743 Polypropylene Substances 0.000 claims abstract description 30
- -1 polypropylene Polymers 0.000 claims abstract description 30
- 229920001155 polypropylene Polymers 0.000 claims abstract description 30
- 239000006260 foam Substances 0.000 claims abstract description 29
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 24
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000004806 packaging method and process Methods 0.000 claims abstract description 21
- 229920000098 polyolefin Polymers 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 239000002985 plastic film Substances 0.000 claims abstract description 17
- 229920006255 plastic film Polymers 0.000 claims abstract description 17
- 239000003792 electrolyte Substances 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 11
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 11
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 11
- 239000010439 graphite Substances 0.000 claims abstract description 11
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims 2
- 230000005611 electricity Effects 0.000 abstract description 4
- 230000003068 static effect Effects 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
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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
-
- 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
Landscapes
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a high-temperature-resistant lithium ion battery structure which comprises an external packaging mechanism, wherein two polyolefin porous diaphragms are arranged in an inner cavity of the external packaging mechanism, a graphite cathode is arranged between every two adjacent polyolefin porous diaphragms, a lithium cobaltate anode is arranged on the outer wall of one polyolefin porous diaphragm, fluoride electrolyte is arranged in the inner cavity of the external packaging mechanism, a cathode terminal and an anode terminal are arranged at the top of the external packaging mechanism, and the external packaging mechanism comprises an aluminum-plastic film, two polypropylene foam plastics, a heat dissipation aluminum-plastic composite film, a plurality of first heat dissipation holes and a plurality of second heat dissipation holes. The utility model utilizes the arrangement mode of the aluminum-plastic film, the polypropylene foam plastic, the first heat dissipation hole, the second heat dissipation hole and the heat dissipation aluminum-plastic composite film which are matched, thereby being convenient for isolating external high temperature, preventing static electricity and ultraviolet rays, being convenient for temperature dissipation, and being convenient for improving the working high temperature resistance of the battery through the fluoride electrolyte.
Description
Technical Field
The utility model relates to the field of lithium batteries, in particular to a high-temperature-resistant lithium ion battery structure.
Background
Lithium batteries are batteries which use lithium metal or lithium alloy as positive and negative electrode materials and use non-aqueous electrolyte solution, and because the chemical characteristics of the lithium metal are very active, the lithium batteries are processed, stored and used, and along with the development of scientific technology, the lithium batteries become mainstream, and the lithium batteries can be roughly divided into two types: lithium metal batteries and lithium ion batteries, lithium ion batteries do not contain lithium in the metallic state, are rechargeable and can be reused.
When using lithium ion battery, because summer belongs to high temperature season, current lithium ion battery's extranal packing is the plastic-aluminum material, although can cold-resistant oily high temperature resistant, nevertheless because the material list is thin, make external high temperature influence the inside temperature of lithium cell easily, also can not make inside temperature give off fast simultaneously, make the lithium cell because of outside temperature's influence and inside chemical reaction influence when the electricity generation, make the inside temperature of lithium cell rise, influence the generating performance of battery, lead to the generating performance reduction of lithium cell.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a high temperature resistant lithium ion battery structure to solve the above problems in the background art.
In order to achieve the purpose, the utility model provides the following technical scheme: a high-temperature-resistant lithium ion battery structure comprises an outer packaging mechanism, wherein two polyolefin porous diaphragms are arranged in an inner cavity of the outer packaging mechanism, a graphite cathode is arranged between every two adjacent polyolefin porous diaphragms, a lithium cobaltate anode is arranged on the outer wall of one polyolefin porous diaphragm, a fluoride electrolyte is arranged in the inner cavity of the outer packaging mechanism, and a cathode terminal and an anode terminal are arranged at the top of the outer packaging mechanism;
the outer packaging mechanism comprises an aluminum-plastic film, two polypropylene foam plastics, a heat dissipation aluminum-plastic composite film, a plurality of first heat dissipation holes and a plurality of second heat dissipation holes, and the polypropylene foam plastics are arranged between the aluminum-plastic film and the heat dissipation aluminum-plastic composite film.
Preferably, a plurality of the first heat dissipation holes are equidistantly arranged on the outer wall of one of the polypropylene foam plastics, and a plurality of the second heat dissipation holes are equidistantly arranged on the outer wall of the other one of the polypropylene foam plastics.
Preferably, the first heat dissipation holes and the second heat dissipation holes are arranged in a staggered mode, and the aluminum plastic film is fixedly connected with the outer wall of one polypropylene foam plastic through a high-temperature-resistant adhesive.
Preferably, the heat dissipation aluminum-plastic composite film is fixedly connected with the inner wall of the other polypropylene foam plastic through a high-temperature-resistant adhesive.
Preferably, the polyolefin porous diaphragm, the graphite cathode, the lithium cobaltate anode and the fluoride electrolyte are all arranged in an inner cavity of the heat dissipation aluminum-plastic composite film.
Preferably, the negative terminal and the positive terminal are fixedly, alternately and alternately connected with the top ends of the aluminum-plastic film, the two polypropylene foam plastics and the heat dissipation aluminum-plastic composite film.
The utility model has the technical effects and advantages that:
(1) the utility model utilizes the arrangement mode of the aluminum-plastic film, the polypropylene foam plastic, the first heat dissipation hole, the second heat dissipation hole and the heat dissipation aluminum-plastic composite film which are matched, thereby being convenient for isolating external high temperature, preventing static electricity and ultraviolet rays, simultaneously being convenient for temperature dissipation, simultaneously leading the temperature of the battery to rise to sixty ℃ through fluoride electrolyte, also being capable of normally working, and being convenient for improving the working high temperature resistance of the battery;
(2) the utility model utilizes the arrangement mode of the polyolefin porous diaphragm, is convenient for improving the high temperature resistance of the device and reducing the expansion rate, ensures that the battery is safer to use, and improves the stability between structures through the adhesion and the connection of the high temperature resistant adhesive.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic side sectional view of the polypropylene foam of the present invention.
FIG. 3 is a schematic sectional view of the polypropylene foam of the present invention.
In the figure: 1. an outer packaging mechanism; 101. an aluminum-plastic film; 102. polypropylene foam; 103. a heat-dissipating aluminum-plastic composite film; 104. a first heat dissipation hole; 105. a second heat dissipation hole; 2. a polyolefin porous separator; 3. a graphite negative electrode; 4. a lithium cobaltate positive electrode; 5. a fluoride electrolyte; 6. a negative terminal; 7. and a positive terminal.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a high-temperature-resistant lithium ion battery structure as shown in figures 1-3, which comprises an outer packaging mechanism 1, wherein two polyolefin porous diaphragms 2 are arranged in the inner cavity of the outer packaging mechanism 1, the polyolefin porous diaphragms 2 are used for improving the conductivity between ions and reducing the internal resistance of the battery, the transfer coefficient of lithium ions is basically unchanged, the polarization of concentration can be eliminated, the electronic conductivity is lower, the effective isolation between electrodes is ensured, and the high chemical and electrochemical stability of electrode materials can be ensured, a graphite cathode 3 is arranged between two adjacent polyolefin porous diaphragms 2, the lithium ions are conveniently de-embedded during discharging and are conveniently embedded during charging, a lithium cobaltate anode 4 is arranged on the outer wall of one polyolefin porous diaphragm 2, the lithium ions are conveniently embedded during discharging and are de-embedded during charging, a fluoride electrolyte 5 is arranged in the inner cavity of the outer packaging mechanism 1, the fluorine compound replaces flammable electrolyte components, so that the electrolyte can normally work even if the temperature is raised to sixty ℃, the high-temperature resistance of the mechanism is improved, and the top of the external packaging mechanism 1 is provided with a negative terminal 6 and a positive terminal 7;
the external packaging mechanism 1 comprises an aluminum-plastic film 101, two polypropylene foam plastics 102, a heat dissipation aluminum-plastic composite film 103, a plurality of first heat dissipation holes 104 and a plurality of second heat dissipation holes 105, wherein the aluminum-plastic film 101 is made of aluminum-plastic materials, is convenient for static electricity prevention, ultraviolet resistance, moisture resistance, oxygen insulation and shading, cold resistance, oil resistance and high temperature resistance, and has strong preservation, oxygen insulation and easy sealing performance, the polypropylene foam plastics 102 is made of polypropylene resin as a main body and added with foaming agent and other additives, has excellent tensile strength, flexibility and heat insulation performance, can reduce the influence of external temperature on the inner cavity of the battery, the heat dissipation aluminum-plastic composite film 103 is formed by compounding aluminum plastic and heat conduction silica gel, has excellent cold and hot alternation resistance, aging resistance and electric insulation performance, excellent moisture resistance, shock resistance, corona resistance, electric leakage resistance and chemical medium resistance, and can improve the heat resistance and the like of the battery, the two polypropylene foams 102 are arranged between the aluminum-plastic film 101 and the heat dissipation aluminum-plastic composite film 103, so that the high temperature resistance is better;
the first heat dissipation holes 104 are equidistantly formed in the outer wall of one of the polypropylene foam plastics 102, the second heat dissipation holes 105 are equidistantly formed in the outer wall of the other one of the polypropylene foam plastics 102, the first heat dissipation holes 104 and the second heat dissipation holes 105 are arranged in a staggered mode, so that internal heat can be dissipated through the first heat dissipation holes 104 and the second heat dissipation holes 105, dissipation of the internal heat is accelerated, the aluminum-plastic film 101 is fixedly connected with the outer wall of one of the polypropylene foam plastics 102 through a high-temperature-resistant adhesive, the heat dissipation aluminum-plastic composite film 103 is fixedly connected with the inner wall of the other one of the polypropylene foam plastics 102 through a high-temperature-resistant adhesive, and stability of a battery structure is improved through the high-temperature-resistant adhesive;
the polyolefin porous diaphragm 2, the graphite cathode 3, the lithium cobaltate anode 4 and the fluoride electrolyte 5 are all arranged in an inner cavity of the heat dissipation aluminum-plastic composite film 103, the polyolefin porous diaphragm 2, the graphite cathode 3 and the lithium cobaltate anode 4 are connected through a high-temperature-resistant adhesive, so that the stability of the structure is improved conveniently, and the cathode terminal 6 and the anode terminal 7 are fixedly and alternately connected with the top ends of the aluminum-plastic film 101, the two polypropylene foams 102 and the heat dissipation aluminum-plastic composite film 103.
The working principle of the utility model is as follows:
isolated to graphite negative pole 3 and lithium cobaltate positive pole 4 through polyolefin porous diaphragm 2, make graphite negative pole 3 and lithium cobaltate positive pole 4 can carry out stable isolation, improve the intensity of diaphragm simultaneously more frivolous through polyolefin porous diaphragm 2, through fluoride electrolyte 5, be convenient for improve the high temperature resistance of mechanism, even make the electrolyte rise to sixty degrees and also can normally work, through plastic-aluminum film 101 and heat dissipation plastic-aluminum complex film 103, be convenient for improve the dampproofing of battery structure, put ultraviolet ray and electrical insulation, through polypropylene foam 102, a plurality of first louvres 104 and a plurality of second louvres 105, be convenient for isolate external high temperature, make the internal temperature dissipate fast simultaneously, make the high temperature resistance of battery structure higher.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (6)
1. A high-temperature-resistant lithium ion battery structure comprises an outer packaging mechanism (1), and is characterized in that two polyolefin porous diaphragms (2) are arranged in an inner cavity of the outer packaging mechanism (1), a graphite cathode (3) is arranged between every two adjacent polyolefin porous diaphragms (2), a lithium cobaltate anode (4) is arranged on the outer wall of one polyolefin porous diaphragm (2), a fluoride electrolyte (5) is arranged in the inner cavity of the outer packaging mechanism (1), and a cathode terminal (6) and an anode terminal (7) are arranged at the top of the outer packaging mechanism (1);
the outer packaging mechanism (1) comprises an aluminum-plastic film (101), two polypropylene foam plastics (102), a heat dissipation aluminum-plastic composite film (103), a plurality of first heat dissipation holes (104) and a plurality of second heat dissipation holes (105), wherein the polypropylene foam plastics (102) are arranged between the aluminum-plastic film (101) and the heat dissipation aluminum-plastic composite film (103).
2. The lithium ion battery structure of claim 1, wherein the first plurality of heat dissipation holes (104) are equidistantly formed in an outer wall of one of the polypropylene foams (102), and the second plurality of heat dissipation holes (105) are equidistantly formed in an outer wall of another one of the polypropylene foams (102).
3. The structure of claim 1, wherein the first heat dissipation holes (104) and the second heat dissipation holes (105) are arranged in a staggered manner, and the aluminum-plastic film (101) is fixedly connected with the outer wall of one of the polypropylene foams (102) through a high-temperature-resistant adhesive.
4. The high-temperature-resistant lithium ion battery structure according to claim 1, wherein the heat-dissipating aluminum-plastic composite film (103) is fixedly connected with the inner wall of the other polypropylene foam plastic (102) through a high-temperature-resistant adhesive.
5. The high-temperature-resistant lithium ion battery structure according to claim 1, wherein the polyolefin porous membrane (2), the graphite negative electrode (3), the lithium cobaltate positive electrode (4) and the fluoride electrolyte (5) are all arranged in an inner cavity of the heat-dissipation aluminum-plastic composite membrane (103).
6. The high-temperature-resistant lithium ion battery structure according to claim 1, wherein the negative terminal (6) and the positive terminal (7) are fixedly inserted and connected with the top ends of the aluminum-plastic film (101), the two polypropylene foams (102) and the heat dissipation aluminum-plastic composite film (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121738558.1U CN216120501U (en) | 2021-07-28 | 2021-07-28 | High-temperature-resistant lithium ion battery structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121738558.1U CN216120501U (en) | 2021-07-28 | 2021-07-28 | High-temperature-resistant lithium ion battery structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216120501U true CN216120501U (en) | 2022-03-22 |
Family
ID=80723480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121738558.1U Expired - Fee Related CN216120501U (en) | 2021-07-28 | 2021-07-28 | High-temperature-resistant lithium ion battery structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216120501U (en) |
-
2021
- 2021-07-28 CN CN202121738558.1U patent/CN216120501U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20220322 |