CN216795308U - Heating device, battery module, battery pack and electronic equipment - Google Patents
Heating device, battery module, battery pack and electronic equipment Download PDFInfo
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- CN216795308U CN216795308U CN202220236707.2U CN202220236707U CN216795308U CN 216795308 U CN216795308 U CN 216795308U CN 202220236707 U CN202220236707 U CN 202220236707U CN 216795308 U CN216795308 U CN 216795308U
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- heating device
- battery module
- insulating films
- resistance wire
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Abstract
The utility model discloses a heating device, a battery module, a battery pack and electronic equipment. In the present invention, a heating device of a battery module includes: the resistance wire is arranged between the pair of insulating films in a surrounding mode, and the density of the resistance wire is gradually reduced from the edges of the pair of insulating films to the middle of the pair of insulating films; wherein, two ends of the resistance wire extend out of the pair of insulating films, and the two ends of the resistance wire are respectively connected with a connector clip. Compared with the prior art, the battery module heating device has the advantages that the battery module is uniformly heated, the heating device is more flexibly connected, and the battery module heating device is convenient to install.
Description
Technical Field
The utility model relates to the field of batteries, in particular to a heating device, a battery module, a battery pack and electronic equipment.
Background
The battery module performance is comparatively sensitive to the temperature, and work can effectively guarantee the working property of charging and life-span at suitable temperature interval, and prior art often adopts the mode of external heating to make the module be in suitable temperature interval. Laminate heating device is the mode comparatively commonly used as the most basic constitutional unit of laminate battery module in laminate battery core, and heating device comprises the inside resistance wire of surface insulation layer cladding. The existing heating device adopts the resistance wire design with equal distance and uniform distribution in structural design, and the heating device also adopts the resistance wire design scheme with double paths and uniform distribution, so as to realize multi-power heating of the battery cell.
Heating device is in electric core stack inside, and the heating power of heating device to the module of resistance wire equidistance equipartition is the same from inside to outside. Because the module surface contacts with air or outside spare part, the regional heat loss that is close to the module surface is more serious to there is temperature gradient in making the module temperature from inside to outside, can't realize the purpose of even heating. And the heating device is fixedly connected with the bus circuit on the battery module and cannot be disassembled, so that the heating device cannot be replaced and is troublesome to install.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a heating device, a battery module, a battery pack and electronic equipment, which can uniformly heat the battery module, and the heating device is more flexible in connection and convenient to install.
In order to solve the above technical problems, an embodiment of the present invention provides a heating device for a battery module, including: the resistance wire is arranged between the pair of insulating films in a surrounding mode, and the density of the resistance wire is gradually reduced from the edges of the pair of insulating films to the middle of the pair of insulating films;
the two ends of the resistance wire extend out of the pair of insulating films, and the two ends of the resistance wire are respectively connected with a connector clip.
In one embodiment, each of the insulating films is a polyimide film. The resistance wire is clamped and fixed through the pair of insulating films, the resistance wire can be positioned, the resistance wire is convenient to install and protected, and meanwhile, the resistance wire cannot be in contact with the battery cell to cause interference.
In one embodiment, one side of the pair of insulating films, which faces away from the resistance wire, is adhered with a back adhesive. The heating device can be conveniently fixed between the two electric cores.
In one embodiment, the connectors extend from the same side of the pair of insulating films. The connection of plug connectors is convenient, and the overall layout is more convenient.
In one embodiment, each insulating film is rectangular, and the resistance wires are distributed between the pair of insulating films in a surrounding mode along the shape of the insulating films.
In one embodiment, the two end portions extend in parallel from the resistance wire at the outermost peripheral portions of the pair of insulating films.
An embodiment of the present invention provides a battery module including: the battery comprises a plurality of battery cores which are arranged in sequence, and at least one heating device as above is clamped between two adjacent battery cores.
In one embodiment, the plug-in unit of each heating device protrudes from the same end side of the battery module.
An embodiment of the present invention provides a battery pack including: the battery module as described above.
An embodiment of the present invention provides an electronic device including: a battery pack as described above.
Compared with the prior art, the density of the resistance wires is gradually reduced from the edges of the pair of insulation films to the middle of the pair of insulation films, the resistance wires are distributed at unequal intervals, and the distribution density of the resistance wires is increased from inside to outside, so that the external heating power is high, the internal heating power is low, the heat loss of the battery module close to the outside is compensated, the battery module is uniformly heated, and the heating efficiency is improved. In addition, the plug connector is arranged, the heating device is more convenient to connect, the heating device can be replaced, the connection of the heating device is not limited to the bus circuit in the battery module, and the plug connector of the heating device can be plugged into an external circuit, so that the use is more flexible.
Drawings
FIG. 1 is a schematic structural view of a resistance wire disposed within an insulating film according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a heating device clamped between cells according to an embodiment of the present invention;
wherein, 1, an insulating film; 2. a resistance wire; 3. a plug-in connector; 4. and (5) battery cores.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solutions claimed in the claims of the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.
Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.
Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.
In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms are used, but the terms "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be interpreted as words of convenience and should not be interpreted as limiting terms.
Embodiments of the present invention are described below with reference to the drawings.
A first embodiment of the present invention relates to a heating device of a battery module. The heating device includes: the resistance wire 2 is arranged between the pair of insulating films 1 in a surrounding mode, and the density of the resistance wire 2 is gradually reduced from the edges of the pair of insulating films 1 to the middle of the pair of insulating films 1. Wherein, two ends of resistance wire 2 stretch out to outside a pair of insulating film 1, and are connected with the plug connector respectively on two ends of resistance wire 2. The plug connector can be connected with a plug or a metal insert and a main circuit of the battery module, and the plug connector is also connected to an external circuit.
Through the above, it is not difficult to find that the density of the resistance wire 2 is gradually reduced from the edges of the pair of insulating films 1 to the middle of the pair of insulating films 1, the resistance wire 2 is distributed at unequal intervals, and the distribution density of the resistance wire 2 is increased from inside to outside, so that the external heating power is high, the internal heating power is low, the heat loss of the battery module close to the outside is compensated, the uniform heating of the battery module is realized, and the heating efficiency is improved. In addition, the plug connector is arranged, the heating device is more convenient to connect, the heating device can be replaced, the connection of the heating device is not limited to the bus circuit in the battery module, and the plug connector of the heating device can be plugged into an external circuit, so that the use is more flexible.
Implementation details of the present embodiment are specifically described below, and the following description is provided only for the sake of understanding and is not necessary for implementing the present embodiment.
Further, each of the insulating films 1 is a polyimide film. Understandably, the insulating film 1 can also use other material films in the field, and the resistance wire 2 is clamped and fixed through the pair of insulating films 1, so that the resistance wire 2 can be positioned, the resistance wire 2 is convenient to mount, the resistance wire 2 is also protected, and meanwhile, the resistance wire 2 and the battery cell 4 cannot be contacted to cause interference.
In addition, a back glue is adhered to one side of the pair of insulating films 1, which is far away from the resistance wire 2. So that the heating device can be conveniently fixed between the two electric cores 4.
Further, the connectors protrude from the same side of the pair of insulating films 1.
Furthermore, each insulating film 1 is rectangular, and the resistance wires 2 are circumferentially distributed between a pair of insulating films 1 along the shape of the insulating films 1, that is, the resistance wires 2 are folded into two parallel wires and then are circumferentially wound into a plurality of rectangular spiral shapes. It is understood that in other embodiments, the insulating film 1 may also be circular or in other shapes, and the layout shape of the resistance wire 2 may also be changed. Of course, the resistance wire 2 may be in a plurality of layouts, but is not limited to one in the embodiment, and when the resistance wire 2 is in a plurality, a plurality of connectors 3 may be correspondingly connected with the resistance wire 2.
Further, both end portions are extended in parallel from the resistance wire 2 at the outermost peripheral portions of the pair of insulating films 1.
A second embodiment of the present invention relates to a battery module including: a plurality of electric cores 4 are arranged in sequence, and at least one heating device as in the first embodiment is clamped between two adjacent electric cores 4.
Further, the plug-in members of the respective heating devices are extended from the same end side of the battery module.
A third embodiment of the present invention relates to a battery pack including: such as the battery module of the second embodiment.
A fourth embodiment of the present invention relates to an electronic apparatus including: such as the battery pack of the third embodiment. The electronic equipment can be vehicles such as automobiles and electric trains or other equipment needing battery packs.
While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.
These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the utility model, and that various changes in form and details may be made therein without departing from the spirit and scope of the utility model in practice.
Claims (10)
1. A heating device of a battery module, comprising: the resistance wire is arranged between the pair of insulating films in a surrounding mode, and the density of the resistance wire is gradually reduced from the edges of the pair of insulating films to the middle of the pair of insulating films;
the two ends of the resistance wire extend out of the pair of insulating films, and the two ends of the resistance wire are respectively connected with a connector clip.
2. The heating device for battery module according to claim 1, wherein each of the insulating films is a polyimide film.
3. The heating device for a battery module according to claim 1, wherein a back adhesive is adhered to one side of the pair of insulating films, which faces away from the resistance wire.
4. The heating device for a battery module according to claim 1, wherein the plug-in unit protrudes from the same side as the pair of insulating films.
5. The heating device for a battery module according to claim 4, wherein each of the insulating films has a rectangular shape, and the resistance wire is circumferentially distributed between the pair of insulating films along the shape of the insulating films.
6. The heating device for a battery module according to claim 5, wherein the two end portions are extended in parallel from portions of the resistance wire at the outermost peripheries of the pair of insulating films.
7. A battery module, comprising: a plurality of cells arranged in sequence, wherein at least one heating device as claimed in any one of claims 1 to 6 is clamped between two adjacent cells.
8. The battery module according to claim 7, wherein the plug-in unit of each heating device protrudes from the same end side of the battery module.
9. A battery pack, comprising: the battery module according to claim 7 or 8.
10. An electronic device, comprising: the battery pack according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220236707.2U CN216795308U (en) | 2022-01-27 | 2022-01-27 | Heating device, battery module, battery pack and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220236707.2U CN216795308U (en) | 2022-01-27 | 2022-01-27 | Heating device, battery module, battery pack and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216795308U true CN216795308U (en) | 2022-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220236707.2U Active CN216795308U (en) | 2022-01-27 | 2022-01-27 | Heating device, battery module, battery pack and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216795308U (en) |
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2022
- 2022-01-27 CN CN202220236707.2U patent/CN216795308U/en active Active
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