CN112333861A - Battery heating film with variable heating power and lithium ion battery - Google Patents
Battery heating film with variable heating power and lithium ion battery Download PDFInfo
- Publication number
- CN112333861A CN112333861A CN202011286989.9A CN202011286989A CN112333861A CN 112333861 A CN112333861 A CN 112333861A CN 202011286989 A CN202011286989 A CN 202011286989A CN 112333861 A CN112333861 A CN 112333861A
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- heating
- battery
- heating film
- resistance
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 159
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 16
- 239000011247 coating layer Substances 0.000 claims abstract description 20
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 claims description 2
- -1 iron-chromium-aluminum Chemical compound 0.000 claims description 2
- 229910001120 nichrome Inorganic materials 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 2
- 238000000576 coating method Methods 0.000 claims 2
- 238000000605 extraction Methods 0.000 claims 2
- 239000012774 insulation material Substances 0.000 claims 2
- 239000010410 layer Substances 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 7
- 210000004027 cell Anatomy 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 241000270295 Serpentes Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012528 membrane Substances 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
- 238000002360 preparation method Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
-
- 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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Secondary Cells (AREA)
Abstract
The embodiment of the invention provides a variable-power battery heating film and a lithium ion battery, which comprise an upper insulating coating layer, a lower insulating coating layer and a heating layer arranged between the upper insulating coating layer and the lower insulating coating layer, wherein the heating layer comprises a plurality of heating loops, the plurality of heating loops comprise resistance wires and lead-out wires, and the lead-out wires are arranged at the end parts and the middle parts of the resistance wires. According to the technical scheme, the battery in a low-temperature environment is heated through the battery heating film, so that the working range of the battery is expanded; the variable heating power realized by adopting a plurality of heating loops and a connection method can quickly reach the optimal working temperature of the battery in different low-temperature ranges by the most appropriate heating power and heating resistance value; the heating loops are reasonably distributed in the heating film, so that the heating uniformity of the heating film under different heating powers is ensured; the resistance wires forming the heating loop can be selected from resistance wires with different thicknesses, namely different resistance values according to different battery models.
Description
Technical Field
The invention relates to the field of lithium ion batteries, in particular to a battery heating film with variable heating power and a lithium ion battery.
Background
Under low temperature environment, the lithium ion diffusion inside the lithium ion power battery becomes slow, the ionic conductivity in the electrolyte is reduced, the internal contact resistance is increased, and various chemical reaction rates become slow, so that the charge and discharge capacity and the available capacity of the battery are sharply attenuated. Especially, in a low-temperature environment, lithium precipitation can occur, and lithium dendrite growth to a certain extent can puncture the diaphragm, so that some safety accidents can occur. To avoid these accidents, electrically heated membranes have begun to be widely used in power battery systems.
Most of the existing heating films comprise a single heating loop, a heating layer, an insulating layer and the like, and the low-temperature environment contains different temperatures; meanwhile, after actual installation, the function of adapting to different environmental temperatures is difficult to realize by changing the installation position. Patent CN 111355003 a discloses a power battery heating device and a heating method, including a super capacitor, a heating control unit, a main control switch, a power battery, an external heating device, a battery thermal management system, an external heating control switch, a resistance adjustable heating film and a temperature sensor. The heating control unit controls the super capacitor to be connected into the resistance adjustable heating film according to the temperature, the super capacitor is used for discharging and heating, the battery self-discharging heating is not included, and a specific method is not provided for how the resistance adjustable heating film can adjust the resistance. Patent CN 210168248U discloses an electric heating film including a multi-power heating system, which includes an insulating coating layer, a first heating loop and a second heating loop, wherein the first heating loop and the second heating loop are formed by resistance wires distributed in the insulating coating layer. The resistance wires are arranged in a snake shape, but no filling material is used among the resistance wires, so that the resistance wires are contacted under extreme working conditions, and the use reliability of the heating film is reduced; meanwhile, the heating film is provided with only two heating loops, the achievable variable power is less, and the heating film is difficult to adapt to a complex low-temperature environment.
Disclosure of Invention
In order to solve the above problems, the present invention is directed to a battery heating film with variable heating power and a lithium ion battery, so that the power battery can have different heating powers in different low temperature ranges, quickly reach an optimal working temperature, and avoid overheating or insufficient heating.
In order to achieve the above object, in one aspect, the present invention provides a battery heating film with variable heating power, including an upper insulating coating layer, a lower insulating coating layer, and a heating layer disposed between the upper insulating coating layer and the lower insulating coating layer, where the heating layer includes a plurality of heating loops, the plurality of heating loops are composed of resistance wires and lead-out wires, and the lead-out wires are disposed at end portions and middle portions of the resistance wires.
In another aspect, the present invention provides a lithium ion battery comprising a plurality of battery cells and a battery heating film as described above disposed between and/or outside the battery cells.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the technical scheme, the battery in a low-temperature environment is heated through the battery heating film, so that the working range of the battery is expanded; the variable heating power realized by adopting a plurality of heating loops and a connection method can quickly reach the optimal working temperature of the battery in different low-temperature ranges by the most appropriate heating power and heating resistance value; the heating loops are reasonably distributed in the heating film, so that the heating uniformity of the heating film under different heating powers is ensured; the resistance wires forming the heating loop can be selected from resistance wires with different thicknesses, namely different resistance values according to different battery models.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a heating layer structure of a variable power battery heating film according to an embodiment of the present invention.
Wherein the names corresponding to the reference numbers are as follows: 1-leading out a lead, 2-heating a loop, and 3-upper and lower insulating coating layers; 4-a connector; 5-insulating material.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.
As shown in fig. 1, in order to solve the problem that the low-temperature performance of the lithium ion battery is poor in different low-temperature ranges, the present embodiment provides a battery heating film with variable heating power, which includes an upper insulating coating layer 3, a lower insulating coating layer 3, and a heating layer disposed between the upper insulating coating layer 3 and the lower insulating coating layer 3, and is characterized in that the heating layer includes a plurality of heating loops 2, the plurality of heating loops 2 are formed by resistance wires and lead-out wires, and the end portions and the middle portions of the resistance wires are both provided with lead-out wires 1. The upper and lower insulating coating layers 3 are arranged on the upper and lower surfaces of the heating film, so that the heating film and the lithium ion battery are insulated, and the heating film is prevented from causing short circuit of the battery. The heating layer is arranged in the middle, the middle heating layer is composed of a plurality of heating loops, and the number of the heating loops is determined according to the specific battery model.
Preferably, the resistance wires are arranged in a symmetrical serpentine arrangement, and the lead-out wires 1 in the middle of the resistance wires are arranged at serpentine inflection points of the resistance wires close to the edges of the heating film. In order to ensure the heating uniformity of the heating film when operating at different heating powers, the heating loops are arranged in a symmetrical manner, as shown in fig. 1, the heating loops on both sides are arranged in an alternating manner and should comply with the rule that the heating loops participating in the operation are uniformly distributed in the heating film when the heating film is switched on.
Preferably, the resistance wire is provided as one or more.
Preferably, when the resistance wire is many, each resistance wire is arranged in parallel at equal distance. The distance between the resistance wires is set to be a fixed value, which can be determined according to the type of the assembled battery, which can help the arrangement of the heating loop in the heating film and make the surface of the packaged heating film smoother when the insulating material is filled. Preferably, the arrangement gap of the resistance wire is 5 mm.
The number of the heating circuits in the heating film is not fixed, and in this embodiment, 10 heating circuits shown in fig. 1 are taken as an example, and if the number of the heating circuits needs to be increased, the heating circuits may be uniformly arranged according to an arrangement rule.
Preferably, the thickness of the upper and lower insulating coating layers 3 is set between 0.08mm and 0.12 mm.
Preferably, the resistance wire material includes, but is not limited to, nichrome, iron-chromium-aluminum alloy, copper-nickel alloy, and thermocouple wires.
Preferably, the resistance wire is filled with an insulating material 5 around the resistance wire, and the insulating material 5 includes, but is not limited to, polyamide and silicone gel. After the insulating coating layer is coated on the intermediate heating layer, the surface smoothness of the heating film is ensured, the anti-vibration performance under the bad driving road condition is improved, and the short circuit phenomenon caused by the contact between the heating loops due to vibration is prevented.
Preferably, the lead-out wire 1 is wrapped in the silica gel sleeve, and the tail end of the lead-out wire 1 is connected to the plug connector 4. The plug-in unit 4 is connected with a switch, a power supply, an external power supply including but not limited to a super capacitor and the like, and the lithium ion battery. The length of the lead-out wire 1 matches the position of the battery management system BMS control board. The switch includes, but is not limited to, a diode, a MOS transistor, etc.
Preferably, the plug connector 4 is respectively connected with the positive and negative terminals of the heating circuit, is connected with the switch firstly, and is then connected with the power supply through the switch. The switch is directly controlled by the BMS board, so that the intermediate links of control are reduced, and the reliability of the heating system is improved. The switch can be connected with the connector on either side.
The heating circuits 2 may, in use, be switched on individually for each heating circuit 2 or simultaneously for several heating circuits 2 to achieve different heating powers. The heating loops 2 are all distributed in the heating film, and the symmetry axis in the length direction of the heating film is used as the symmetry axis, so that the heat generated when each heating loop 2 is respectively started is uniformly distributed on the surface of the heating film.
In this embodiment, the resistance values of the heating circuits 2 are matched with the low-temperature heating test result according to the capacity of the lithium ion battery before installation. In the low temperature range of-50 ℃ to 0 ℃, one temperature range every 10 ℃ corresponds to a switch-on protocol. The connection scheme of T being more than or equal to-50 ℃ and less than-40 ℃ is as follows: leading out wires a1 and j1 are connected, a2 and j2 are connected, namely all resistance wires of the intermediate heating layer participate in working; the connection scheme of T being more than or equal to 40 ℃ and less than-30 ℃ is as follows: a1 and d1 are switched on, g1 and c1 are switched on, and a2 and j2 are switched on; the connection scheme of T being more than or equal to-30 ℃ and less than-20 ℃ is as follows: b1 and c1 are switched on, e1 and f1 are switched on, h1 and i1 are switched on, and a2 and j2 are switched on; the connection scheme that T is more than or equal to-20 ℃ and less than-10 ℃ is as follows: a2, j2 is switched on; the connection scheme that T is more than or equal to-10 ℃ and less than 0 ℃ is as follows: b2 and c2 are switched on, e2 and f2 are switched on, and h2 and i2 are switched on.
In the embodiment, the diameter range of each heating loop resistance wire is 0.03 mm-0.08 mm, the diameter range of the resistance wire is ensured to be smaller than the thickness range of the heat insulation coating layer by 0.08 mm-0.12 mm, and the smoothness of the surface of the heating film after hot pressing in the preparation process is favorably ensured.
In this embodiment, when the temperature sensor detects that the current ambient temperature is-23 ℃, the BMS system turns on a2 and a2 by controlling the switches to rapidly heat the power battery to 0 ℃ or more at the fastest speed. The BMS system then turns off the control switch and the lithium ion battery begins to operate at normal operating temperatures.
The heating loops of the technical scheme are reasonably distributed in the intermediate heating layer, and in actual use, the heating loops are symmetrically connected according to the rule of the heating loops so as to reduce the problem of uneven heating of the heating film. When the heating power supply is an external power supply or the heating power supply is a power battery, the heating film can obtain the optimal heating power at the current temperature by simultaneously switching on or respectively switching on different heating loops. The resistance wire can be used for heating the battery on one hand, and has the function of protecting the battery by voltage division on the other hand. The heating film and the power battery can well solve the problems of overheating of a common heating film and uneven heating, the utilization rate of energy is improved, the energy consumption is further reduced, and the safety of the battery is improved.
The embodiment of the invention also provides a lithium ion battery which comprises a plurality of battery cells and a battery heating film arranged between the battery cells and/or at the outer side of the battery cells.
It should be understood that, the sequence numbers of the steps in the embodiments of the present invention do not mean the execution sequence, and the execution sequence of each process should be determined by the function and the inherent logic of the process, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a variable heating power's battery heating film, includes upper and lower insulating coating and sets up the zone of heating in the middle of upper and lower insulating coating, its characterized in that, the zone of heating contains a plurality of heating circuit, a plurality of heating circuit comprise resistance wire and extraction wire the tip and the mid portion of resistance wire all set up extraction wire.
2. The variable heating power battery heating film as defined in claim 1, wherein the resistance wires are arranged in a symmetrical serpentine arrangement, and the lead-out wires of the middle portion of the resistance wires are arranged at serpentine corners of the resistance wires near the edges of the heating film.
3. The variable heating power battery heating film according to claim 2, wherein the resistance wire is provided in one or more.
4. The variable heating power battery heating film according to claim 3, wherein when the resistance wires are plural, each of the resistance wires is arranged in parallel at an equal distance.
5. The variable heating power battery heating film according to claim 4, wherein the upper and lower insulating coating layers are set to have a thickness of 0.08mm to 0.12 mm.
6. The variable heating power battery heating film according to claim 5, wherein the resistance wire material includes but is not limited to nichrome, iron-chromium-aluminum, copper-nickel, and thermocouple wires.
7. The variable heating power battery heating film according to claim 6, wherein the resistance wire is filled with insulation material around it, the insulation material including but not limited to polyamide and silicone gel.
8. The variable heating power battery heating film according to claim 7, wherein the lead-out wire is wrapped in a silicone sleeve, and an end section of the lead-out wire is connected to a plug connector.
9. The variable heating power battery heating film according to claim 8, wherein the arrangement gap of the resistance wire is 5 mm.
10. A lithium ion battery comprising a plurality of battery cells and a battery heating film according to any of claims 1 to 9 arranged between and/or outside the battery cells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011286989.9A CN112333861A (en) | 2020-11-17 | 2020-11-17 | Battery heating film with variable heating power and lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011286989.9A CN112333861A (en) | 2020-11-17 | 2020-11-17 | Battery heating film with variable heating power and lithium ion battery |
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| Publication Number | Publication Date |
|---|---|
| CN112333861A true CN112333861A (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011286989.9A Pending CN112333861A (en) | 2020-11-17 | 2020-11-17 | Battery heating film with variable heating power and lithium ion battery |
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| Country | Link |
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| CN (1) | CN112333861A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113782872A (en) * | 2021-09-15 | 2021-12-10 | 珠海冠宇电源有限公司 | Lithium battery pack and heating method thereof |
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| CN103085430A (en) * | 2013-01-07 | 2013-05-08 | 上海申科技术有限公司 | Electric heating laminating machine for uniformly heating solar cell module and heating method thereof |
| JP2017191762A (en) * | 2016-04-15 | 2017-10-19 | 株式会社 アジアスター | Film type heater |
| DE102016213159A1 (en) * | 2016-07-19 | 2018-01-25 | Robert Bosch Gmbh | Hybrid lithium ion battery with liquid electrolyte area and locally heated solid electrolyte area |
| CN206992752U (en) * | 2017-08-02 | 2018-02-09 | 山东电力建设第三工程公司 | A kind of Battery Discharging Device |
| CN208352365U (en) * | 2017-12-29 | 2019-01-08 | 桑德集团有限公司 | A kind of vertical battery modules of battery core |
| CN109841926A (en) * | 2019-04-08 | 2019-06-04 | 北京理工大学 | A kind of quick self-heating method of power battery low temperature and device |
| CN210168248U (en) * | 2018-12-28 | 2020-03-20 | 桑顿新能源科技有限公司 | Electric heating film containing multi-power heating system |
| 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 |
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2020
- 2020-11-17 CN CN202011286989.9A patent/CN112333861A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103085430A (en) * | 2013-01-07 | 2013-05-08 | 上海申科技术有限公司 | Electric heating laminating machine for uniformly heating solar cell module and heating method thereof |
| JP2017191762A (en) * | 2016-04-15 | 2017-10-19 | 株式会社 アジアスター | Film type heater |
| DE102016213159A1 (en) * | 2016-07-19 | 2018-01-25 | Robert Bosch Gmbh | Hybrid lithium ion battery with liquid electrolyte area and locally heated solid electrolyte area |
| CN206992752U (en) * | 2017-08-02 | 2018-02-09 | 山东电力建设第三工程公司 | A kind of Battery Discharging Device |
| CN208352365U (en) * | 2017-12-29 | 2019-01-08 | 桑德集团有限公司 | A kind of vertical battery modules of battery core |
| CN210168248U (en) * | 2018-12-28 | 2020-03-20 | 桑顿新能源科技有限公司 | Electric heating film containing multi-power heating system |
| 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 |
| CN109841926A (en) * | 2019-04-08 | 2019-06-04 | 北京理工大学 | A kind of quick self-heating method of power battery low temperature and device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113782872A (en) * | 2021-09-15 | 2021-12-10 | 珠海冠宇电源有限公司 | Lithium battery pack and heating method thereof |
| CN113782872B (en) * | 2021-09-15 | 2023-03-10 | 珠海冠宇电源有限公司 | Lithium battery pack and heating method thereof |
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Application publication date: 20210205 |