CN215989013U - Low-temperature self-heating lithium ion battery cell outer membrane - Google Patents
Low-temperature self-heating lithium ion battery cell outer membrane Download PDFInfo
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- CN215989013U CN215989013U CN202121785207.6U CN202121785207U CN215989013U CN 215989013 U CN215989013 U CN 215989013U CN 202121785207 U CN202121785207 U CN 202121785207U CN 215989013 U CN215989013 U CN 215989013U
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- China
- Prior art keywords
- fixedly connected
- battery cell
- shell
- wall
- temperature
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 42
- 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
- 239000012528 membrane Substances 0.000 title claims abstract description 15
- 210000004027 cell Anatomy 0.000 claims abstract description 21
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 15
- 239000004917 carbon fiber Substances 0.000 claims abstract description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 210000005056 cell body Anatomy 0.000 claims abstract description 12
- 239000011258 core-shell material Substances 0.000 claims abstract description 12
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 239000010445 mica Substances 0.000 claims description 5
- 229910052618 mica group Inorganic materials 0.000 claims description 5
- 229920001721 polyimide Polymers 0.000 claims description 5
- 210000002808 connective tissue Anatomy 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 231100000681 Certain safety factor Toxicity 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008054 signal transmission Effects 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
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Abstract
The utility model discloses a low-temperature self-heating lithium ion battery cell outer membrane which comprises a shell, wherein a waterproof layer is fixedly connected to the outer wall of the shell, an electric core shell is fixedly connected to the inner wall of the bottom of the shell, a protective sponge is fixedly connected to the inner wall of the electric core shell, an insulating filling layer is fixedly connected to the inner side of the protective sponge, a heat insulation layer is fixedly connected to the inner side of the insulating filling layer, a heating piece is fixedly connected to the inner wall of the heat insulation layer, and a carbon fiber heat conduction layer is fixedly connected to the inner part of the heating piece. According to the utility model, firstly, the temperature relay is matched with the temperature sensor to enable the heating sheet to supply power to generate heat energy, the heat energy is distributed on the battery cell body through the carbon fiber heat conduction layer, the temperature rise can be accelerated by matching with the heat insulation layer, the battery cell body is effectively protected by the protection sponge and the waterproof layer, the service life of the battery cell body is prolonged by matching with the insulation filling layer, and the battery cell is worth of being widely popularized.
Description
Technical Field
The utility model relates to the field of electric cores, in particular to a low-temperature self-heating lithium ion battery core outer film.
Background
The electric core indicates that singly contains just, the electrochemistry electric core of negative pole, generally not direct use, it contains protection circuit and shell to be distinguished from the battery, can directly use, its particle diameter is little, specific surface area is big, the colour is white, high purity, electrochemical performance obviously improves, can use among lithium titanate battery material and the lithium cobaltate battery material, the electric core divide into aluminium shell electricity core, laminate polymer electricity core (also known as "polymer electricity core"), three kinds of cylinder electricity core, what mobile phone batteries adopted usually is aluminium shell electricity core, digital products such as bluetooth adopt laminate polymer electricity core more, notebook computer's battery adopts the series-parallel combination of cylinder electricity core.
Chinese patent document CN208336400U discloses a self-heating lithium ion battery, which comprises an electric core group formed by connecting a plurality of electric cores in series and in parallel, and a housing for loading and protecting the electric core group, wherein the top end of the housing is provided with a cover plate; heating plates are respectively arranged on two sides of the electric core group, each heating plate comprises a heating plate body, and a first lug and a second lug are connected to the heating plate bodies; the cover plate is provided with a positive electrode and a negative electrode which are respectively connected with the positive pole column and the negative pole column of the electric core group, and the cover plate is also provided with a third electrode; the positive electrode and the third electrode are connected sequentially through a temperature sensor and a relay; the first electrode lug is connected with the negative electrode, and the second electrode lug is connected with the third electrode. Although above-mentioned device need not external load or energy, only need control the closure/disconnection of relay through temperature sensor induction temperature, the reuse is used for controlling the switch-on/disconnection of anodal electrode and third electrode, and then control battery inner loop and open a way, convenient operation, but have the inhomogeneous and heat electric core that to make the speed that electric core temperature risees slow, at the bottom of the effect, lack the protection to inside components and parts simultaneously, have life and factor of safety lower risk.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art, and provides a low-temperature self-heating lithium ion battery cell outer membrane.
In order to achieve the purpose, the utility model adopts the following technical scheme: a low-temperature self-heating lithium ion battery cell outer membrane comprises a shell, wherein a waterproof layer is fixedly connected to the outer wall of the shell, a battery cell shell is fixedly connected to the inner wall of the bottom of the shell, a protective sponge is fixedly connected to the inner wall of the battery cell shell, an insulating filling layer is fixedly connected to the inner side of the protective sponge, a heat insulating layer is fixedly connected to the inner side of the insulating filling layer, a heating sheet is fixedly connected to the inner wall of the heat insulating layer, a carbon fiber heat-conducting layer is fixedly connected to the inner part of the heating sheet, the inner part of the carbon fiber heat-conducting layer is fixedly connected to the outer wall of a battery cell body, binding posts are fixedly connected to the left side and the right side of the top end of the battery cell body, the top ends of the binding posts sequentially penetrate through a control box and the shell, a temperature relay is arranged in the middle of the bottom end of the control box, the bottom end of the temperature relay is fixedly connected to the inner wall of the bottom end of the control box, and a temperature sensor is arranged in the middle of the top end of the temperature relay.
As a further description of the above technical solution:
the bottom of the electric core body is fixedly connected to the inner wall of the middle part of the bottom end of the electric core shell.
As a further description of the above technical solution:
and the top end of the binding post on the left side of the shell is provided with a positive binding post.
As a further description of the above technical solution:
and a negative wiring terminal is arranged at the top end of the wiring terminal on the right side of the shell.
As a further description of the above technical solution:
the bottom end of the control box is fixedly connected to the top of the electric core shell, and the top of the control box is fixedly connected to the inner wall of the top of the shell.
As a further description of the above technical solution:
both ends are all fixed all to be connected respectively in the left and right sides at piece top that generates heat through the wire about temperature relay.
As a further description of the above technical solution:
the insulating filling layer is made of mica tapes, and the heat insulation layer is made of polyimide films.
As a further description of the above technical solution:
the temperature relay is electrically connected with the temperature sensor.
The utility model has the following beneficial effects:
1. according to the utility model, firstly, the connection between the electric core body and the heating sheet is controlled through the temperature relay, and when the external temperature is too low, the heating sheet is powered to generate heat energy by matching with the temperature sensor, and the heat conducting property of the carbon fiber is good, so that the heat energy generated by the heating sheet is distributed on the electric core body through the carbon fiber heat conducting layer to be heated.
2. According to the utility model, the protective sponge can effectively protect the internal battery cell body from being damaged, the waterproof layer can prevent rainwater from entering, internal components are protected, the insulating filling layer of the mica tape is matched, electric leakage and accidents caused by electric leakage can be prevented, the service life of the battery cell body is prolonged, and a certain safety coefficient is ensured, so that the battery cell is worthy of great popularization.
Drawings
Fig. 1 is a perspective view of a low-temperature self-heating lithium ion battery cell outer membrane according to the present invention;
FIG. 2 is a schematic diagram of a low-temperature self-heating lithium ion battery cell outer membrane middle shell according to the present invention;
fig. 3 is an internal structural view of a low-temperature self-heating lithium ion battery cell according to the present invention.
Illustration of the drawings:
1. a waterproof layer; 2. a positive terminal; 3. a negative terminal; 4. a temperature sensor; 5. a binding post; 6. a temperature relay; 7. a control box; 8. a wire; 9. a housing; 10. an insulating filling layer; 11. a thermal insulation layer; 12. a heat generating sheet; 13. a carbon fiber heat conduction layer; 14. a cell body; 15. a protective sponge; 16. An electrical core shell.
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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, one embodiment of the present invention is provided: a low-temperature self-heating lithium ion battery cell outer membrane comprises a shell 9, a waterproof layer 1 is fixedly connected to the outer wall of the shell 9, an electric core shell 16 is fixedly connected to the inner wall of the bottom of the shell 9, a protective sponge 15 is fixedly connected to the inner wall of the electric core shell 16, the protective sponge 15 can effectively protect an internal battery cell body 14 from being damaged, an insulating filling layer 10 is fixedly connected to the inner side of the protective sponge 15, accidents caused by electric leakage can be prevented, a certain safety coefficient is improved, a heat insulation layer 11 is fixedly connected to the inner side of the insulating filling layer 10, heat energy generated by a heat generating sheet 12 is prevented from losing, a heat generating sheet 12 is fixedly connected to the inner wall of the heat insulation layer 11, the heat generating sheet 12 is electrified to generate heat, so that the battery cell body 14 is heated, a carbon fiber heat conduction layer 13 is fixedly connected to the inside of the heat generating sheet 12, the heat conduction performance of carbon fiber is good, and the inside of the carbon fiber heat conduction layer 13 is fixedly connected to the outer wall of the battery cell body 14, on carbon fiber heat-conducting layer 13 distributes the heat energy that piece 12 produced to electric core body 14 of being convenient for, the equal fixed connection terminal 5 in the left and right sides on the top of electric core body 14, the top of terminal 5 runs through control box 7 and casing 9 and the middle part of terminal 5 in proper order is provided with temperature relay 6, temperature relay 6 controls electric core body 14 and the contact between the piece 12 that generates heat, 6 bottom fixed connection of temperature relay is on the inner wall at 7 bottom middle parts of control box, the top middle part of temperature relay 6 is provided with temperature sensor 4, temperature sensor 4 can detect outside temperature.
The bottom of the electric core body 14 is fixedly connected to the inner wall of the middle part of the bottom end of the electric core shell 16, the top end of the terminal 5 on the left side of the shell 9 is provided with a positive terminal 2, the top end of the terminal 5 on the right side of the shell 9 is provided with a negative terminal 3, the bottom end of the control box 7 is fixedly connected to the top part of the electric core shell 16, the top part of the control box 7 is fixedly connected to the inner wall of the top part of the shell 9, the left end and the right end of the temperature relay 6 are both fixedly connected to the left side and the right side of the top part of the heating plate 12 through wires 8, the insulating filling layer 10 is made of mica tape, electric leakage can be prevented, accidents caused by electric leakage can be avoided, the polyimide film which is made of the insulating layer 11 is matched with the insulating layer 11 of the polyimide film, the heat energy generated by the heating plate 12 can be effectively prevented from losing, the temperature rise of the electric core body 14 is accelerated, the heating efficiency of the electric core body 14 is improved, and the temperature relay 6 is electrically connected with the temperature sensor 4, can detect external temperature through temperature sensor 4 when low, convert heat signal into electrical signal transmission for temperature relay 6, when reaching temperature relay 6 action condition, electric core body 14 begins to generate heat piece 12 power supply to the heating generates heat piece 12.
The working principle is as follows: the connection between the electric core body 14 and the heating sheet 12 is controlled by the temperature relay 6, when the external temperature is too low, the heating sheet 12 is powered to generate heat energy by matching with the temperature sensor 4, because the heat conducting property of the carbon fiber is good, the heat energy generated by the heating sheet 12 is distributed on the electric core body 14 through the carbon fiber heat conducting layer 13 to be heated, the heat energy generated by the heating sheet 12 can be effectively prevented from losing by matching with the heat insulating layer 11 of the polyimide film, the temperature rise of the electric core body 14 is accelerated, the heating efficiency of the electric core body 14 is improved, meanwhile, the protective sponge 15 can effectively protect the internal electric core body 14 from being damaged, the insulating filling layer 10 of the mica tape is matched, the electric leakage can be prevented, the accident caused by the electric leakage can be prevented, the service life of the electric core body 14 is prolonged, and a certain safety factor is ensured, is worthy of being widely popularized.
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 (8)
1. The utility model provides a low temperature self-heating lithium ion battery cell adventitia, includes casing (9), its characterized in that: the waterproof layer (1) is fixedly connected to the outer wall of the shell (9), the electric core shell (16) is fixedly connected to the inner wall of the bottom of the shell (9), the protective sponge (15) is fixedly connected to the inner wall of the electric core shell (16), the insulating filling layer (10) is fixedly connected to the inner side of the protective sponge (15), the insulating layer (11) is fixedly connected to the inner side of the insulating filling layer (10), the heating sheet (12) is fixedly connected to the inner wall of the insulating layer (11), the carbon fiber heat-conducting layer (13) is fixedly connected to the inner part of the heating sheet (12), the carbon fiber heat-conducting layer (13) is fixedly connected to the outer wall of the electric core body (14), the binding posts (5) are fixedly connected to the left side and the right side of the top end of the electric core body (14), the top end of the binding posts (5) sequentially penetrates through the control box (7) and the shell (9), and the middle part of the binding posts (5) is provided with the temperature relay (6), temperature relay (6) bottom fixed connection is on the inner wall at control box (7) bottom middle part, the top middle part of temperature relay (6) is provided with temperature sensor (4).
2. The low-temperature self-heating lithium ion battery cell outer membrane according to claim 1, wherein: the bottom of the battery cell body (14) is fixedly connected to the inner wall of the middle part of the bottom end of the battery cell shell (16).
3. The low-temperature self-heating lithium ion battery cell outer membrane according to claim 1, wherein: the top end of the binding post (5) on the left side of the shell (9) is provided with a positive binding post (2).
4. The low-temperature self-heating lithium ion battery cell outer membrane according to claim 1, wherein: and a negative wiring terminal (3) is arranged at the top end of the wiring terminal (5) on the right side of the shell (9).
5. The low-temperature self-heating lithium ion battery cell outer membrane according to claim 1, wherein: the bottom end of the control box (7) is fixedly connected to the top of the electric core shell (16), and the top of the control box (7) is fixedly connected to the inner wall of the top of the shell (9).
6. The low-temperature self-heating lithium ion battery cell outer membrane according to claim 1, wherein: both ends all are fixed all to be connected respectively in the left and right sides at piece (12) top that generate heat through wire (8) about temperature relay (6).
7. The low-temperature self-heating lithium ion battery cell outer membrane according to claim 1, wherein: the insulating filling layer (10) is made of mica tapes, and the heat insulation layer (11) is made of polyimide films.
8. The low-temperature self-heating lithium ion battery cell outer membrane according to claim 1, wherein: the temperature relay (6) is electrically connected with the temperature sensor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121785207.6U CN215989013U (en) | 2021-08-03 | 2021-08-03 | Low-temperature self-heating lithium ion battery cell outer membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121785207.6U CN215989013U (en) | 2021-08-03 | 2021-08-03 | Low-temperature self-heating lithium ion battery cell outer membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215989013U true CN215989013U (en) | 2022-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121785207.6U Expired - Fee Related CN215989013U (en) | 2021-08-03 | 2021-08-03 | Low-temperature self-heating lithium ion battery cell outer membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215989013U (en) |
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2021
- 2021-08-03 CN CN202121785207.6U patent/CN215989013U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220308 |