CN217035787U - Winding type temperature-equalizing heating device for battery - Google Patents
Winding type temperature-equalizing heating device for battery Download PDFInfo
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- CN217035787U CN217035787U CN202220590522.1U CN202220590522U CN217035787U CN 217035787 U CN217035787 U CN 217035787U CN 202220590522 U CN202220590522 U CN 202220590522U CN 217035787 U CN217035787 U CN 217035787U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 124
- 238000004804 winding Methods 0.000 title claims abstract description 13
- 239000000178 monomer Substances 0.000 claims abstract description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000000741 silica gel Substances 0.000 claims abstract description 29
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 239000012528 membrane Substances 0.000 claims description 21
- 229920001721 polyimide Polymers 0.000 claims description 8
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 9
- 229910002804 graphite Inorganic materials 0.000 description 9
- 239000010439 graphite Substances 0.000 description 9
- -1 graphite alkene Chemical class 0.000 description 9
- 230000009286 beneficial effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 6
- 229910001416 lithium ion Inorganic materials 0.000 description 6
- 239000004642 Polyimide Substances 0.000 description 3
- 238000005253 cladding Methods 0.000 description 3
- 230000006355 external stress Effects 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 241000270295 Serpentes Species 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of power batteries, in particular to a winding type temperature-equalizing heating device for a battery, which comprises a heating core, flexible insulating layers fixedly wrapped on two sides of the heating core, a silica gel heat conduction layer fixedly connected to the outer side of the flexible insulating layers and a graphene temperature-equalizing layer fixedly connected to the outer side of the silica gel heat conduction layer. The flexible insulating layer coats the heating core, so that electric leakage is prevented, and the safety is high; the silica gel heat conduction layer has good heat conduction and buffering performance, and the single battery is prevented from being damaged by collision; the graphene has excellent heat conduction and heat conduction performance and high heat transfer efficiency, so that heat is uniformly distributed on the outer surface of the whole heating device, the single battery is uniformly heated, and the temperature consistency of the single battery is effectively improved; the heating device has good flexibility, can be self-supported and is easy to fold, the coating of the battery monomer is realized, and the heating device is suitable for batteries with different shapes, and has strong flexibility and wide application range.
Description
Technical Field
The utility model relates to the technical field of power batteries, in particular to a winding type temperature-equalizing heating device for a battery.
Background
The lithium ion battery is used for the electric automobile, and the performance of the lithium ion battery is obviously influenced by the temperature in all aspects. When the lithium ion battery works under the condition of low temperature, the internal resistance of the battery can be obviously increased, the phenomenon of lithium precipitation of a negative electrode can be caused by low-temperature charging, the capacity of the battery can be rapidly reduced, and even the short circuit of the positive electrode and the negative electrode can be caused under the extreme condition.
In order to make the lithium ion battery work normally at a lower temperature, a heating device needs to be equipped for the lithium ion battery to raise the temperature of the lithium ion battery. At present, chinese patent publication No. CN110631355A discloses a battery heating tray, which includes a heating bottom plate and a plurality of heating vertical plates installed on the heating bottom plate, the plurality of heating vertical plates are arranged at intervals, a heating cavity for accommodating a battery is formed between any two adjacent heating vertical plates, side surfaces of the heating vertical plates are used for contacting with side surfaces of the battery, and an upper surface of the heating bottom plate is used for contacting with a bottom surface of the battery, so as to heat the battery.
However, the heating tray is contacted with the battery to realize heating, and for batteries with different shapes, the heating tray matched with the batteries in shape needs to be manufactured, so that the application range is limited; and the heating tray is heating and the in-process, has the inhomogeneous problem of heat distribution, leads to the battery to be heated inhomogeneous, influences the heat retaining effect of heating.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a winding type uniform-temperature heating device for a battery, which heats the battery by winding the battery on a single battery, so that the battery is uniformly heated, has good heating and heat-preserving effects, and is suitable for batteries with different shapes.
The utility model solves the technical problems through the following technical means:
the utility model provides a wound form samming heating device for battery, is including the core that generates heat, fixed cladding at the flexible insulating layer of the core both sides that generate heat, the silica gel heat-conducting layer of rigid coupling in the flexible insulating layer outside and the graphite alkene samming layer of rigid coupling in the silica gel heat-conducting layer outside.
Has the beneficial effects that: when the heating device is used, the heating device is wound on or between single batteries, so that the graphene temperature-equalizing layer is fully contacted with the single batteries, then the heating core is electrified to heat the heating core, and heat is transmitted to the single batteries through the flexible insulating layer, the silica gel heat-conducting layer and the graphene temperature-equalizing layer in sequence, so that the heating and the heat preservation of the single batteries are realized; the heating device has good flexibility, can be self-supported and is easy to turn over, realizes the coating of the battery monomer, is suitable for batteries with different shapes, and has strong flexibility and wide application range; in addition, the flexible insulating layer coats the heating core, so that electric leakage is prevented, and the use safety is high; the silica gel heat conduction layer has good heat conduction performance and a buffering effect, and can prevent the single battery from being damaged due to collision while heating, so that the single battery is well protected; the graphene has the advantages that the heat conductivity coefficient is high, the graphene has very good heat conduction performance, the heat transfer efficiency is high, and when heat is transferred to the graphene temperature equalization layer, the heat is uniformly distributed on the outer surface of the whole heating device, so that the battery monomer is uniformly heated, the temperature uniformity of the battery monomer is effectively improved, the heating effect of the battery monomer is further ensured, the service life of the battery monomer of the battery cell is prolonged, and the capacity attenuation of the battery cell is reduced.
Preferably, the flexible insulating layer is a polyimide film.
Has the beneficial effects that: the polyimide has strong mechanical property, good insulativity and thermal conductivity, and the polyimide film is coated on the heating core and can well protect the heating core; in addition, the polyimide can be used for a long time in the temperature range of-269-280 ℃, so that the heating device is suitable for being used in extremely cold environments.
Preferably, the thickness of the flexible insulating layer is 0.06-0.1mm, the thickness of the silica gel heat conduction layer is 1.0-1.3mm, and the thickness of the graphene temperature equalization layer is 0.05-0.1 mm.
Has the beneficial effects that: the thickness that above-mentioned layer structure adopted has both ensured the heat transfer effect, has played insulating, protection, supported effect again, has obvious cost and weight advantage in addition.
Preferably, the flexible insulating layer is fixed on the heating core through epoxy resin glue in a high-temperature pressing mode.
Has the beneficial effects that: the flexible insulating layer is fixed on the heating core through epoxy resin glue high-temperature pressing, and the connection is firm.
Preferably, the flexible insulating layer and the silica gel heat conduction layer are fixed through adhesive bonding.
Has the beneficial effects that: the flexible insulating layer is fixedly connected with the silica gel heat conducting layer through gluing, and the processing is convenient.
Preferably, the graphene temperature-uniforming layer is formed by coating graphene on a silica gel heat-conducting layer.
Has the advantages that: graphite alkene samming layer is formed by coating on the silica gel heat-conducting layer by graphite alkene, has the advantage that graphite alkene distributes evenly, thickness is easily controlled, and processing is convenient moreover.
Preferably, generate heat core, flexible insulating layer, silica gel heat-conducting layer and graphite alkene samming layer constitute the heating film subassembly jointly, and a plurality of battery monomers are the dislocation arrangement, just the heating film subassembly is snakelike winding between a plurality of battery monomers.
Has the beneficial effects that: the heating membrane assembly is wound among the plurality of battery monomers in a snake shape, and synchronous heating of the plurality of battery monomers is realized.
Preferably, the heating device further comprises a module box, and the plurality of battery cells wound with the heating membrane module are placed inside the module box.
Has the beneficial effects that: the module box forms good protection to the battery monomer, prevents to receive external stress and causes the damage to this forms good protection to the battery monomer.
Preferably, the end part of the heating membrane assembly, which bypasses the battery monomer, is provided with a fixing hole, a fixing strip is fixedly connected in the module box, and the heating membrane assembly is fixedly arranged on the fixing strip through a screw and the fixing hole.
Has the beneficial effects that: the heating membrane assembly is fixedly arranged on the fixing strip through the screws and the fixing holes, so that the heating membrane assembly is fixed in the module box, and the stability of the battery monomer in the module box is improved due to the limitation of the heating membrane assembly.
The utility model has the advantages that:
1. the flexible insulating layer coats the heating core, so that electric leakage is prevented, and the use safety is high; the silica gel heat conduction layer has good heat conduction performance and buffering effect, and can prevent the single battery from being damaged due to collision while heating, so that the single battery is well protected; the coefficient of heat conductivity of graphite alkene is high, has very good heat conductivility, and heat transfer efficiency is high, and when heat transfer to graphite alkene temperature equalization layer, the heat is at whole heating device's surface evenly distributed, makes battery monomer thermally equivalent, has improved the uniformity of battery monomer temperature effectively, has further ensured the free heating effect of battery, is favorable to improving electric core battery monomer and blocks up life and reduce the capacity decay of electric core.
2. This application heating device has good pliability, can self-supporting and easily turn over and roll over, realizes the free cladding of battery, is applicable to the battery of different shapes, and the flexibility is strong, application scope is wide.
3. The polyimide film is coated on the heating core, so that the heating core can be well protected; in addition, the polyimide can be used for a long time in the temperature range of-269-280 ℃, so that the heating device is suitable for being used in extremely cold environments, and has obvious cost and weight advantages.
4. The heating membrane module is wound among the plurality of battery monomers in a snake shape, so that the plurality of battery monomers are synchronously heated; and the module box forms good protection to the battery monomer, prevents to receive external stress and causes the damage to this forms good protection to the battery monomer.
Drawings
FIG. 1 is a cross-sectional view of a heated membrane module of example 1 of the present application.
Fig. 2 is a diagram illustrating a state in which a heated film assembly is wound around a battery cell according to example 2 of the present application.
Fig. 3 is a diagram showing a state in which a heating film module and a battery cell are placed in a module case in example 2 of the present application.
Description of the reference numerals: 1. heating the membrane module; 11. a heat generating core; 12. a flexible insulating layer; 13. a silica gel heat conducting layer; 14. a graphene temperature equalization layer; 15. a fixing hole; 2. a battery cell; 3. a module box; 31. and (5) fixing the strip.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Example 1
The embodiment of the application discloses wound form samming heating device for battery. Referring to fig. 1, the winding type temperature-equalizing heating device for a battery includes a heating core 11, a flexible insulating layer 12, a silica gel heat-conducting layer 13, and a graphene temperature-equalizing layer 14. The heating core 11 is a copper sheet heating core, which is connected with a power supply, and can generate heat when the power supply is switched on. The flexible insulating layer 12, the silica gel heat conduction layer 13 and the graphene temperature-uniforming layer 14 are respectively provided with two layers and are oppositely arranged on two sides of the heating core 11.
Referring to fig. 1, the flexible insulating layer 12 is a polyimide film having a thickness of 0.08 mm. The flexible insulating layer 12 is fixed on the upper and lower sides of the heating core 11 by epoxy resin glue through high-temperature press fit, so as to coat the heating core 11, and the flexible insulating layer has the effects of insulation and heat conduction, prevents the electric leakage of the heating core 11, and is safe and reliable; and the heating core 11 can be well protected, and the service life of the heating device is prolonged.
Referring to fig. 1, the silicone heat conducting layer 13 is made of silicone, has good heat conducting performance, and is fixed on the outer side of the flexible insulating layer 12 through adhesive bonding. In this embodiment, the thickness of the silicone heat-conducting layer 13 is 1.2 mm. The graphene temperature equalization layer 14 is formed by coating graphene on the silica gel heat conduction layer 13 and is located on the outer side of the silica gel heat conduction layer 13, and the graphene temperature equalization layer has the advantages of being even in distribution, easy in thickness control and convenient to process. In this embodiment, the thickness of the graphene temperature-uniforming layer 14 is 0.08 mm. When the heating core 11 is electrified and heated, the heat is transmitted to the graphene temperature equalizing layer 14 through the flexible insulating layer 12 and the silica gel heat conducting layer 13 in sequence, the excellent heat conducting performance of the graphene temperature equalizing layer 14 enables the heat to be uniformly dispersed on the surface of the heating device, the cladding can heat and preserve the heat of the battery monomer 2, the temperature consistency is good, and the temperature difference is smaller than 5 ℃ through detection. In addition, the heating device has good flexibility, can be self-supported and is easy to turn over, the coating of the battery monomer 2 is realized, the heating device is suitable for batteries with different shapes, and the heating device has strong flexibility and wide application range.
The use principle and the advantages are as follows: when the heating device is used, the heating device is wound on the single batteries 2 or between the single batteries 2, so that the graphene temperature-equalizing layer 14 is fully contacted with the single batteries 2, then the heating core 11 is electrified to heat the heating core, and heat is transmitted to the single batteries 2 through the flexible insulating layer 12, the silica gel heat-conducting layer 13 and the graphene temperature-equalizing layer 14 in sequence, so that the single batteries 2 are heated and insulated; the heating device has good flexibility, can be self-supported and is easy to fold, the coating of the battery monomer 2 is realized, and the heating device is suitable for batteries with different shapes, strong in flexibility and wide in application range; in addition, the flexible insulating layer 12 coats the heating core 11, so that electric leakage is prevented, and the use safety is high; the silica gel heat conduction layer 13 has good heat conduction performance and a buffering effect, and prevents the single battery 2 from being damaged due to collision while heating, so that the single battery 2 is well protected; graphene's coefficient of heat conductivity is high, has very good heat conductivility, and heat transfer efficiency is high, and when heat transfer to graphene temperature equalization layer 14, the heat is at whole heating device's surface evenly distributed, makes battery monomer 2 thermally equivalent, has improved the uniformity of battery monomer 2 temperature effectively, has further ensured battery monomer 2's heating effect, is favorable to improving electric core battery monomer 2 and blocks up life and reduce the capacity decay of electric core.
Example 2
The embodiment of the application discloses wound form samming heating device for battery, its difference with embodiment 1 lies in: this heating device still includes module box 3, and a plurality of battery monomer 2 are the dislocation and arrange in module box 3. Heating core 11, flexible insulating layer 12, silica gel heat-conducting layer 13 and graphite alkene samming layer 14 in embodiment 1 constitute heating membrane subassembly 1 jointly, and heating membrane subassembly 1 is snakelike winding between a plurality of battery monomer 2, and graphite alkene samming layer 14 and battery monomer 2 contact, realize keeping warm the heating to a plurality of batteries in step, reach the purpose that improves electric core life and reduce electric core capacity decay. The module case 3 provides a good protection for the battery cells 2 against damage caused by external stress.
After the heating membrane assembly 1 bypasses the single battery 2, a fixing hole 15 is formed at the end part thereof. The fixing strip 31 is fixedly connected in the module box 3, the heating membrane assembly 1 is fixedly mounted on the fixing strip 31 through the screws and the fixing holes 15, the heating membrane assembly 1 is fixed in the module box 3, the stability of the battery monomer 2 in the module box 3 is improved due to the limitation of the heating membrane assembly 1, and the reliability of the battery during heating is further improved.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides a wound form samming heating device for battery which characterized in that: the heating device comprises a heating core (11), flexible insulating layers (12) fixedly coated on two sides of the heating core (11), a silica gel heat conducting layer (13) fixedly connected to the outer side of the flexible insulating layers (12), and a graphene temperature-equalizing layer (14) fixedly connected to the outer side of the silica gel heat conducting layer (13).
2. The wound form temperature equalization heating device for the battery according to claim 1, characterized in that: the flexible insulating layer (12) is a polyimide film.
3. The winding type temperature-equalizing heating device for the battery according to claim 1, wherein: the thickness of the flexible insulating layer (12) is 0.06-0.1mm, the thickness of the silica gel heat conduction layer (13) is 1.0-1.3mm, and the thickness of the graphene temperature equalization layer (14) is 0.05-0.1 mm.
4. The winding type temperature-equalizing heating device for the battery according to claim 1, wherein: the flexible insulating layer (12) is fixed on the heating core (11) through epoxy resin glue in a high-temperature pressing mode.
5. The winding type temperature-equalizing heating device for the battery according to claim 1, wherein: the flexible insulating layer (12) is fixedly connected with the silica gel heat conducting layer (13) through gluing.
6. The winding type temperature-equalizing heating device for the battery according to claim 1, wherein: the graphene temperature-equalizing layer (14) is formed by coating graphene on a silica gel heat-conducting layer (13).
7. The wound temperature-equalizing heating device for the battery according to any one of claims 1 to 6, wherein: the heating module is characterized in that the heating core (11), the flexible insulating layer (12), the silica gel heat conducting layer (13) and the graphene temperature-equalizing layer (14) jointly form a heating membrane assembly (1), the plurality of single batteries (2) are arranged in a staggered mode, and the heating membrane assembly (1) is wound among the plurality of single batteries (2) in a snake-shaped mode.
8. The wound form temperature equalization heating apparatus for battery of claim 7, wherein: the heating device further comprises a module box (3), and the plurality of battery monomers (2) wound with the heating membrane module (1) are placed in the module box (3).
9. The wound form temperature equalization heating apparatus for battery of claim 8, wherein: the heating membrane module (1) is provided with a fixing hole (15) at the end part bypassing the battery monomer (2), a fixing strip (31) is fixedly connected in the module box (3), and the heating membrane module (1) is fixedly arranged on the fixing strip (31) through a screw and the fixing hole (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220590522.1U CN217035787U (en) | 2022-03-17 | 2022-03-17 | Winding type temperature-equalizing heating device for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220590522.1U CN217035787U (en) | 2022-03-17 | 2022-03-17 | Winding type temperature-equalizing heating device for battery |
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| Publication Number | Publication Date |
|---|---|
| CN217035787U true CN217035787U (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220590522.1U Active CN217035787U (en) | 2022-03-17 | 2022-03-17 | Winding type temperature-equalizing heating device for battery |
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| Country | Link |
|---|---|
| CN (1) | CN217035787U (en) |
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- 2022-03-17 CN CN202220590522.1U patent/CN217035787U/en active Active
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