CN113764781A - Battery package heating system - Google Patents
Battery package heating system Download PDFInfo
- Publication number
- CN113764781A CN113764781A CN202110909365.6A CN202110909365A CN113764781A CN 113764781 A CN113764781 A CN 113764781A CN 202110909365 A CN202110909365 A CN 202110909365A CN 113764781 A CN113764781 A CN 113764781A
- Authority
- CN
- China
- Prior art keywords
- heating
- battery
- film layer
- battery pack
- biaxially oriented
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 109
- 229920006378 biaxially oriented polypropylene Polymers 0.000 claims abstract description 25
- 239000011127 biaxially oriented polypropylene Substances 0.000 claims abstract description 25
- 230000017525 heat dissipation Effects 0.000 claims description 13
- -1 polypropylene Polymers 0.000 claims description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 6
- 239000004962 Polyamide-imide Substances 0.000 claims description 3
- 239000004642 Polyimide Substances 0.000 claims description 3
- 229920002312 polyamide-imide Polymers 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000007770 graphite material Substances 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 238000004381 surface treatment Methods 0.000 claims description 2
- 230000002457 bidirectional effect Effects 0.000 claims 1
- 239000012528 membrane Substances 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
Images
Classifications
-
- 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
- H01M10/615—Heating or keeping warm
-
- 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
-
- 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
Abstract
The invention provides a battery pack heating system which comprises a battery pack heating film, a temperature sensor and a battery management system, wherein the battery pack heating film comprises a biaxially oriented polypropylene film, an insulating waterproof film layer, a heating film layer and electrodes, the biaxially oriented polypropylene film is respectively wrapped inside and outside the heating film layer, and the insulating waterproof film layer is arranged between the heating film layer and the biaxially oriented polypropylene film; the biaxially oriented polypropylene film is wrapped outside the battery, and an electrode is arranged in the heating film layer and used for heating the heating film layer; the temperature sensor is used for detecting the temperature of the battery; and the battery management system controls the electrode to heat the heating film layer according to the value detected by the temperature sensor. The invention can better fit the battery, saves space, has higher heating efficiency, uniform heating and accurate system temperature control compared with a resistance wire, and can effectively solve the problem of low battery efficiency in winter.
Description
Technical Field
The invention relates to the field of electric automobiles or power batteries, in particular to a battery pack heating system.
Background
As the storage of fossil fuels decreases, the number of electric vehicles is increasing. China is wide in territory, temperature difference is obvious, and the temperature has obvious influence on batteries in the electric automobile. In northern and plateau areas of China, the temperature is lower in winter, however, the battery is not as large as an engine to generate heat, the battery is low in efficiency at low temperature and often cannot meet the requirements of drivers, so that the temperature of the battery needs to be controlled within a certain range.
The battery heating system is generally used for directly heating the battery pack by heating elements, most of which are PTC resistors, powered by an internal or external charger, wherein the heating elements are positioned inside the battery, on the outer surface of the battery or exposed to the electrolyte, and the heating is uneven and inefficient. There is also the technique through PTC heating cooling water to the cooling water after the electronic water pump provides circulating power for the heating, heats the battery package, and this kind of heating mode compares and carries out the mode of heating through heating element and can make the battery be heated evenly, but the power consumption is big, heats slowly. In the aspect of heating control, a fixed heating power curve is generally set in the prior art, the control mode cannot enable the temperature of each battery to change along with the curve, and although the overall temperature of the battery is increased in winter, part of the batteries still have lower temperature and cannot fully exert the heating function.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a battery pack heating system which can better attach a battery and save space, and compared with a resistance wire, the battery pack heating system has the advantages of higher heating efficiency, uniform heating and accurate system temperature control, and can effectively solve the problem of low battery efficiency in winter.
The present invention achieves the above-described object by the following technical means.
A battery pack heating system comprises a battery pack heating film, a temperature sensor and a battery management system, wherein the battery pack heating film comprises a biaxially oriented polypropylene film, an insulating waterproof film layer, a heating film layer and electrodes, the biaxially oriented polypropylene film is respectively wrapped inside and outside the heating film layer, and the insulating waterproof film layer is arranged between the heating film layer and the biaxially oriented polypropylene film; the biaxially oriented polypropylene film is wrapped outside the battery, and an electrode is arranged in the heating film layer and used for heating the heating film layer; the temperature sensor is used for detecting the temperature of the battery;
and the battery management system controls the electrode to heat the heating film layer according to the value detected by the temperature sensor.
Further, the insulating waterproof film layer is an organic heat-resistant insulating material, and the organic heat-resistant insulating material is one or more of polyethylene terephthalate, polyimide, polyamide-imide, polymaleimide, polydiphenyl ether or polytetrafluoroethylene layers.
Further, the heating film layer is made of graphite materials.
Further, the biaxially oriented polypropylene film encapsulates the insulating waterproof film layer, the heating film layer and the electrode, and is adhered to the surface of the battery through 3M double-sided adhesive after surface treatment.
Furthermore, the biaxially oriented polypropylene film is 20-40 μm thick and has high tensile strength, impact strength, tear strength and flexural strength, so that the biaxially oriented polypropylene film can adapt to batteries of different shapes, is attached to the batteries and wraps the batteries.
Further, the electrode is connected with a battery, and the battery management system controls the connection or disconnection of the electrode and the battery according to a value detected by the temperature sensor.
The battery management system controls the heat dissipation module to work according to the value detected by the temperature sensor, and the heat dissipation module is a heat dissipation fan.
Further, the battery pack comprises a plurality of dry batteries, and a temperature sensor and a battery pack heating film are arranged near each battery.
The invention has the beneficial effects that:
the battery pack heating system can better attach the battery, saves space, has higher heating efficiency and uniform heating and accurate system temperature control compared with a resistance wire, and can effectively solve the problem of low battery efficiency in winter. And all set up temperature sensor with every battery, every battery all wraps up outward and has heated the membrane, and every heating membrane is connected the battery electrode of parcel, and the independence heats, can make every battery all reach suitable temperature, and the heating is even moreover, full play heating performance, light in weight is also to protection battery that can be better. The battery is heated in this way, the speed is high, and the occupied space is small. The rapid and uniform heating mode is comprehensively considered, and the development of the electric automobile is better met.
Drawings
Fig. 1 is a schematic view of a heating film for a battery pack according to the present invention.
Fig. 2 is a schematic structural view of a battery pack heating film according to the present invention when mounted on a cylindrical battery.
Fig. 3 is a schematic structural view of a battery pack heating film according to the present invention mounted on a prismatic battery.
Fig. 4 is a schematic cross-sectional view of a battery pack heating film according to the present invention mounted on a battery.
Fig. 5 is a schematic diagram of a battery management system according to the present invention.
In the figure:
1-biaxially oriented polypropylene film; 2-insulating waterproof membrane layer; 3-a heating film layer; 4-an electrode; 10-a battery pack heating membrane; 20-battery.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, but the scope of the invention is not limited thereto.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be 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 by those skilled in the art according to specific situations.
As shown in fig. 1, the battery pack heating system according to the present invention includes a battery pack heating film 10, a temperature sensor and a battery management system,
the battery pack heating film 10 comprises a biaxially oriented polypropylene film 1, an insulating waterproof film layer 2, a heating film layer 3 and electrodes 4, the biaxially oriented polypropylene film 1 is respectively wrapped inside and outside the heating film layer 3, and the insulating waterproof film layer 2 is arranged between the heating film layer 3 and the biaxially oriented polypropylene film 1; the biaxially oriented polypropylene film 1 is wrapped outside the battery 20, and an electrode is arranged in the heating film layer 3 and used for heating the heating film layer 3; the temperature sensor is used for detecting the temperature of the battery 20; the battery management system controls the electrode heating film layer 3 according to the value detected by the temperature sensor.
As shown in fig. 2, 3 and 4, the battery pack heating film 10 is wrapped around the outer surface of each battery 20, and the batteries 20 are contained in the battery pack case. The structure of the heating film of the invention is shown in figure 1, which comprises a biaxial stretching polypropylene film 1, an insulating waterproof film layer 2 and a heating film layer 3; a conductive carbon paste layer is pasted on the insulating waterproof film layer 2 to serve as a heating film layer 3 of a heating material; a plurality of electrodes 4 are arranged in the heating film layer 3, and one side surface of each electrode 4 is in contact with the outer insulating waterproof film layer 4; two sides of the other surface of the heating film layer 3 are pasted with conductive aluminum strips near the edges, and the conductive aluminum strips are electrically connected with electrodes 4 arranged in the heating film layer 3; the conductive aluminum strip is connected with the heating controller through a lead;
laminating an insulating waterproof film layer 2 on the other surface of the heating film layer 3; the two insulating waterproof film layers 4 are both made of organic heat-resistant insulating materials, and the organic heat-resistant insulating materials are one or more of polyethylene terephthalate, polyimide, polyamide-imide, polymaleimide, polydiphenyl ether or polytetrafluoroethylene layers adhered with one layer of polyester-imide film.
And a biaxially oriented polypropylene film 1 is laminated on the other surface of the insulating waterproof film layer 2, and the heating film is encapsulated by the two biaxially oriented polypropylene films. The problems of water inflow and electric leakage can be effectively avoided through the insulating waterproof film layer 2 of the biaxially oriented polypropylene film 1.
As shown in fig. 5, the schematic diagram of the heating system of the battery pack according to the present invention;
a battery pack heating control system comprises a battery management system, a temperature sensor and a battery pack heating film 10. The temperature sensor is arranged in the battery pack and used for collecting the temperature of the battery pack, and the temperature sensor is connected with the input end of the battery management system through a signal wire; the battery management system processes the temperature information of the battery pack collected by the temperature sensor, and if the temperature of the battery 20 in the battery pack is lower than 15 ℃, the battery management system controls the switch to be closed to electrify the electrode 4 to work, so that the temperature of the battery 20 is increased. When the temperature of the battery is heated to 30 ℃, the battery management system controls the switch to be switched off, so that the electrode 4 is powered off and stops working. The temperature of each cell 20 can be independently controlled to avoid uneven heating.
Command information can be preset in a battery management system; the command information includes a start heating temperature (, a stop heating temperature, a heat radiation temperature, and the like.
The battery pack comprises a battery pack, a battery management system, a battery, a vent, a heat dissipation module and a heat dissipation fan, wherein the battery pack is provided with a shell, the vent can be arranged on the shell of the battery pack, the battery dissipates heat when the temperature is too high, the heat dissipation module comprises a heat dissipation fan and a switch, the switch is connected with the battery management system, the battery management system controls the switch to be closed and disconnected, the work of the heat dissipation fan is further controlled, the heat dissipation fan can enable air to flow, and therefore the battery dissipates heat.
The heating film designed by the invention can be suitable for batteries with various shapes, and the heating film is used for cylindrical batteries as shown in figure 2. The heating film of the present invention is used for a prismatic battery as shown in fig. 3. Because no metal resistance wire is arranged in the heating film, and the biaxially oriented polypropylene film has small thickness, high tensile strength, impact strength, tearing strength and bending strength, the heating film has good fitting property.
It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (8)
1. A battery pack heating system is characterized by comprising a battery pack heating film (10), a temperature sensor and a battery management system,
the heating film (10) of the battery pack comprises a biaxially oriented polypropylene film (1), an insulating waterproof film layer (2), a heating film layer (3) and electrodes (4), the biaxially oriented polypropylene film (1) is respectively wrapped inside and outside the heating film layer (3), and the insulating waterproof film layer (2) is arranged between the heating film layer (3) and the biaxially oriented polypropylene film (1); the bidirectional stretching polypropylene film (1) is wrapped outside the battery (20), and an electrode is arranged in the heating film layer (3) and used for heating the heating film layer (3); the temperature sensor is used for detecting the temperature of the battery (20);
the battery management system controls the electrode to heat the heating film layer (3) according to the value detected by the temperature sensor.
2. The battery pack heating system according to claim 1, wherein the insulating waterproof film layer (2) is an organic heat-resistant insulating material, and the organic heat-resistant insulating material is one or more of a polyethylene terephthalate, a polyimide, a polyamideimide, a polymaleimide, a polydiphenyl ether, or a polytetrafluoroethylene layer.
3. The battery pack heating system of claim 1, wherein the heat-generating film layer is a graphite material.
4. The battery pack heating system according to claim 1, wherein the biaxially oriented polypropylene film (1) encapsulates the insulating waterproof film layer (2), the heating film layer (3) and the electrode (4), and the surface of the battery pack is adhered to the surface of the battery by 3M double-sided adhesive after surface treatment.
5. The battery pack heating system according to claim 1, wherein the biaxially oriented polypropylene film (1) has a thickness of 20 to 40 μm.
6. The battery pack heating system according to claim 1, wherein the electrode (4) is connected to a battery, and the battery management system controls the connection or disconnection of the electrode (4) to the battery based on a value detected by the temperature sensor.
7. The battery pack heating system according to claim 1, further comprising a heat dissipation module, wherein the battery management system controls the heat dissipation module to operate according to the value detected by the temperature sensor, and the heat dissipation module is a heat dissipation fan.
8. A battery pack heating system as claimed in claim 1, wherein the battery pack includes a plurality of dry cells (20), and a temperature sensor and a battery pack heating film (10) are mounted adjacent each cell (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110909365.6A CN113764781A (en) | 2021-08-09 | 2021-08-09 | Battery package heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110909365.6A CN113764781A (en) | 2021-08-09 | 2021-08-09 | Battery package heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113764781A true CN113764781A (en) | 2021-12-07 |
Family
ID=78788763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110909365.6A Pending CN113764781A (en) | 2021-08-09 | 2021-08-09 | Battery package heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113764781A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012068116A (en) * | 2010-09-23 | 2012-04-05 | Mitsubishi Materials Corp | Battery with temperature sensor |
| CN105449313A (en) * | 2015-12-25 | 2016-03-30 | 北京新能源汽车股份有限公司 | Heating element for power battery |
| CN109950664A (en) * | 2019-03-29 | 2019-06-28 | 杜武浩 | A kind of heating sheet and the new energy battery pack equipped with the heating sheet |
| CN110492201A (en) * | 2019-08-30 | 2019-11-22 | 长沙优力电驱动系统有限公司 | Electric car and its power battery |
| CN110828942A (en) * | 2019-10-25 | 2020-02-21 | 荣盛盟固利新能源科技有限公司 | Planar heating film for lithium ion power battery and lithium ion power battery |
| CN210956923U (en) * | 2019-12-24 | 2020-07-07 | 安徽宇航派蒙健康科技股份有限公司 | Battery for electric vehicle with heating function |
| CN210984899U (en) * | 2019-09-19 | 2020-07-10 | 碳翁(北京)科技有限公司 | Heating sheet for automobile battery |
| CN111600061A (en) * | 2019-02-21 | 2020-08-28 | 中信国安盟固利动力科技有限公司 | Soft package lithium ion power battery with heating film |
| CN212033194U (en) * | 2020-03-18 | 2020-11-27 | 湖南烯源新材科技有限公司 | Battery heating device based on graphene |
| CN113183720A (en) * | 2021-05-07 | 2021-07-30 | 江苏大学 | Electric automobile floor type heating system |
-
2021
- 2021-08-09 CN CN202110909365.6A patent/CN113764781A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012068116A (en) * | 2010-09-23 | 2012-04-05 | Mitsubishi Materials Corp | Battery with temperature sensor |
| CN105449313A (en) * | 2015-12-25 | 2016-03-30 | 北京新能源汽车股份有限公司 | Heating element for power battery |
| CN111600061A (en) * | 2019-02-21 | 2020-08-28 | 中信国安盟固利动力科技有限公司 | Soft package lithium ion power battery with heating film |
| CN109950664A (en) * | 2019-03-29 | 2019-06-28 | 杜武浩 | A kind of heating sheet and the new energy battery pack equipped with the heating sheet |
| CN110492201A (en) * | 2019-08-30 | 2019-11-22 | 长沙优力电驱动系统有限公司 | Electric car and its power battery |
| CN210984899U (en) * | 2019-09-19 | 2020-07-10 | 碳翁(北京)科技有限公司 | Heating sheet for automobile battery |
| CN110828942A (en) * | 2019-10-25 | 2020-02-21 | 荣盛盟固利新能源科技有限公司 | Planar heating film for lithium ion power battery and lithium ion power battery |
| CN210956923U (en) * | 2019-12-24 | 2020-07-07 | 安徽宇航派蒙健康科技股份有限公司 | Battery for electric vehicle with heating function |
| CN212033194U (en) * | 2020-03-18 | 2020-11-27 | 湖南烯源新材科技有限公司 | Battery heating device based on graphene |
| CN113183720A (en) * | 2021-05-07 | 2021-07-30 | 江苏大学 | Electric automobile floor type heating system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6047810B2 (en) | Secondary battery, secondary battery module including the same, and secondary battery pack | |
| US10122054B2 (en) | Battery pack systems that include polymers | |
| US9005801B2 (en) | Battery module, electronic apparatus, electric power storage system, electric power system, and electric vehicle | |
| CA2951202C (en) | Battery module, electricity storage device, electricity storage system, electronic device, electric-powered vehicle, and power system | |
| US20170025722A1 (en) | Heater for electric vehicle batteries | |
| EP1526601A1 (en) | Battery module having lithium battery, and vehicle control system employing battery module having lithium battery | |
| CN109066002B (en) | Power battery automatic control heat management system based on phase change energy storage and thermoelectric effect | |
| EP3065205A1 (en) | Electrode and cell having electrode | |
| EP2456003A1 (en) | Battery Pack | |
| CN206293500U (en) | A kind of electrostrictive polymer core power battery module for collecting radiating heating one | |
| EP4311011A1 (en) | Battery cell and power consuming apparatus | |
| EP4358239A1 (en) | Battery pack, thermal management system of battery, and electric device | |
| CN110649193A (en) | Low temperature resistant battery module | |
| KR20140148121A (en) | Pouch case and secondary battery including the same | |
| CN210350043U (en) | Electric automobile and power battery thereof | |
| CN111129413B (en) | Battery module heating and collecting device, battery module and vehicle | |
| CN113764781A (en) | Battery package heating system | |
| CN211208629U (en) | Battery, battery module, battery pack and electric vehicle | |
| CN214797562U (en) | Heating device of soft package lithium battery | |
| CN216905343U (en) | Heating film, battery module, battery and power consumption device | |
| CN215451549U (en) | Heating film and battery pack | |
| CN113097568B (en) | Electrochemical device and electronic device using the same | |
| CN216529037U (en) | Composite insulating heat-conducting film and battery cell | |
| CN210744114U (en) | Power battery heating structure | |
| CN211238443U (en) | A intelligent battery heating device for unmanned aerial vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211207 |