CN217740644U - Heating plate and battery module - Google Patents
Heating plate and battery module Download PDFInfo
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- CN217740644U CN217740644U CN202221383330.XU CN202221383330U CN217740644U CN 217740644 U CN217740644 U CN 217740644U CN 202221383330 U CN202221383330 U CN 202221383330U CN 217740644 U CN217740644 U CN 217740644U
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- heating
- heating plate
- battery module
- heating operation
- patch according
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a heating plate and battery module, heating plate (1) is integrated into one piece, heating plate (1) includes insulating layer (2) and inlays and establish heating circuit (3) in insulating layer (2), heating plate (1) is equipped with connecting portion (5) including heating operation portion (4) that a plurality of is established ties between two adjacent heating operation portions (4). The utility model adopts the integrally formed heating plate, realizes the solderless series connection of a plurality of heating operation parts, avoids adopting the wire welding series connection mode, has a solderless series connection structure, has higher stability, and can bear the extrusion, stretching and even bending of external force; the expansion hole design can effectively improve the phenomenon that the heating sheet expands and deforms under the heated state, further improve the safety and prolong the service life of the heating sheet; the battery module adopting the heating plate has better safety.
Description
Technical Field
The utility model relates to a heating plate technical field especially relates to a heating plate and battery module.
Background
Currently, lithium ion batteries are widely used in power battery systems or household energy storage systems, but the charging and discharging performance of the batteries is greatly limited in a low-temperature environment. In order to improve the charge and discharge performance of the lithium ion battery in a low-temperature environment, the lithium ion battery needs to be heated, and the common heating modes in the market at present include a water heating heater, a PTC heating sheet, a silica gel heating sheet and a polyimide heating sheet.
The heating sheet is widely applied because of the advantages of small space occupation, uniform heating, high heat conduction rate, low cost and the like. In the practical application process, the battery module adopts and is heated by a plurality of heating plates series connection, and adjacent heating plate passes through the wire and establishes ties together, and the wire passes through welded connection with the heat-generating body, and the welding point is receiving external force extrusion, tensile or receive the condition of buckling for a long time under, in whole product life cycle, has the risk of virtual short circuit that connects, has certain potential safety hazard.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art's shortcoming, the utility model aims to provide a heating plate and battery module for there is the problem of the risk of steadiness difference, virtual short circuit that connects through the connected mode of wire welding series connection between the current heating plate to solve.
To achieve the above objects and other related objects, the present invention provides a solution including the following features.
The utility model provides a heating plate, including the heating plate, the heating plate is integrated into one piece, the heating plate includes the insulating layer and inlays to be established intraformational heating circuit of insulating layer, the heating plate includes the heating operation portion that a plurality of is established ties, is equipped with connecting portion between two adjacent heating operation portions.
Preferably, the heating device further comprises heating terminals, and two ends of the heating sheet are electrically connected with the two heating terminals respectively.
Preferably, the heating operation part is provided with a plurality of expansion holes penetrating through the insulating layer.
Preferably, the outer surface of the joint of the connecting part and the heating operation part is provided with a first insulating protection sticking ear.
Preferably, the cross section of the expansion hole is a rounded rectangle.
Preferably, the heating sheet further comprises a heat-conducting adhesive layer located on the outer surface of the insulating layer.
Preferably, both ends of the heating wire are electrically connected to the two heating terminals, respectively.
Preferably, the heating device further comprises a lead, and two ends of the heating line are electrically connected with the two heating terminals through the lead respectively.
Preferably, the shape of the heating operation part is matched with the side surface of a battery core in the battery module to be heated.
Preferably, the length of connecting portion matches with the length of the terminal surface of electric core in the battery module of waiting to heat.
Preferably, the thickness of the heating plate is 0.3 to 1.2mm.
Preferably, in the heating operation portion, the heating line is bent in a continuous U-shape.
Preferably, the power density of the connecting portion is smaller than the power density of the heating work portion.
Preferably, the power density of the heating operation part is 0.2 to 0.4W/cm 2 。
The utility model also provides a battery module, battery module adopts the heating plate.
As described above, the utility model discloses a heating plate and battery module has following beneficial effect: the heating sheet is integrally formed, so that the solderless series connection of a plurality of heating operation parts is realized, the series connection mode of wire welding is avoided, the heating sheet has a solderless series connection structure, the stability is higher, and the heating sheet can bear external force extrusion, stretching and even bending; the expansion hole design can effectively improve the phenomenon that the heating sheet expands and deforms under the heated state, further improve the safety and prolong the service life of the heating sheet; the battery module adopting the heating plate has better safety.
Drawings
Fig. 1 shows a schematic structural view of the heating sheet of the present invention.
Fig. 2 is a schematic sectional view of the heating operation portion.
Fig. 3 is a schematic cross-sectional view of the connecting portion.
Fig. 4 is a schematic view showing the structure of the heating circuit.
FIG. 5 is a schematic view showing the structure of the expansion hole.
Description of the reference numerals
1. Heating plate
2. Insulating layer
3. Heating circuit
4. Heating operation part
5. Connecting part
6. Heating terminal
7. Expansion hole
8. First insulating protective sticking ear
9. Heat-conducting adhesive layer
10. Conducting wire
11. Second insulation protection sticking ear
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 to 5. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope covered by the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in fig. 1 to 3, the utility model provides a specific heating plate, heating plate 1 is integrated into one piece, heating plate 1 includes insulating layer 2 and inlays and establish heating circuit 3 in insulating layer 2, heating plate 1 includes the heating operation portion 4 of a plurality of series connection, is equipped with connecting portion 5 between two adjacent heating operation portions 4.
Among the above-mentioned technical scheme of this application, the heating plate adopts integrated into one piece's heating plate, realizes the solderless series connection of a plurality of heating operation portions, avoids adopting wire welded tandem mode, and this heating plate has the tandem structure of solderless, and stability is higher, can bear external force extrusion, tensile, buckles even.
In a specific embodiment, the heating plate further comprises heating terminals 6, and two ends of the heating plate 1 are electrically connected to the two heating terminals 6 respectively.
In a particular embodiment as shown in fig. 5, the heating work section 4 is provided with a number of expansion holes 7 penetrating the insulating layer 2. The phenomenon that the heating operation part 4 expands to deform in a heated state can be effectively improved, the safety is further improved, and the service life of the heating sheet is prolonged.
In a specific embodiment, the outer surface of the connecting portion 5 where it meets the heating operation portion 4 is provided with a first insulating protection tab 8. Heating plate 1 is integrated into one piece's flexible construction, and when operating condition, connecting portion 5 with the department of meeting of heating operation portion 4 can be bent wantonly in order to realize fixed with the laminating of battery module according to the shape of waiting to heat the battery module, first insulation protection pastes ear 8 and can effectively protect the portion of bending, takes place impaired, increase of service life after avoiding repetitious usage.
In a particular embodiment, the cross-section of the expansion holes 7 is rounded rectangular.
In a specific embodiment, in the heating operation portion 4, the heating sheet 1 further includes a heat conductive adhesive layer 9, and the heat conductive adhesive layer 9 is located on an outer surface of the insulating layer 2. And the heat-conducting adhesive layer 9 is used for adhering and fixing the heating operation part 5 to the side surface of the electric core in the battery module to be heated.
In a specific embodiment, the thermally conductive adhesive layer may be a double-sided adhesive, and the thickness of the thermally conductive adhesive layer is 0.10 to 0.15mm, such as 0.10 to 0.12mm, and 0.12 to 0.15mm.
In a specific embodiment, both ends of the heating wire 3 are electrically connected to the two heating terminals 6, respectively.
In a specific embodiment, the heating wire system further comprises a conducting wire 10, and both ends of the heating wire 3 are electrically connected to the two heating terminals 6 through the conducting wire 10 respectively.
In a specific embodiment as shown in fig. 1, a second insulation protection sticking ear 11 is disposed on an outer surface of a connection portion between the heating circuit 3 and the lead 10, so as to effectively protect the connection portion and prevent the lead from falling off and cutting off the heating power supply during the use process.
In a specific embodiment, the shape of the heating operation part 4 is matched with the side surface of the battery cell in the battery module to be heated.
In a specific embodiment, the length of the connecting portion 5 matches the length of the end face of the battery core in the battery module to be heated.
In a specific embodiment, the thickness of the heat patch 1 is 0.3 to 1.2mm, such as 0.3 to 0.34mm,0.34 to 0.45mm,0.45 to 0.6mm,0.6 to 1.0mm,1.0 to 1.2mm.
In a specific embodiment, in the heating operation part 4, the heating line 3 is bent in a continuous U shape so as to be uniformly distributed in the insulating layer, thereby increasing the power density.
In a specific embodiment, the power density of the connection part 5 is smaller than the power density of the heating operation part 4. The connection part 5 is mainly used for connecting the heating operation parts 4 in series, but since a heating line is provided therein, heat is inevitably generated, and heat generation at this part is reduced as much as possible by reducing the power density thereof.
In a more specific embodiment, as shown in fig. 4, the cross-section of the heating line at the connecting portion 5 is larger than the cross-section of the heating line at the heating work portion 4. Because the heating lines are made of the same material, the heating power (R = rho L/S; Q = I2R) of the part can be reduced by increasing the width of the heating lines at the connecting part to increase the area, and the power density of the heating lines is reduced, so that the heating of the part is reduced as much as possible.
In a specific embodiment, the power density of the heating operation part 4 is 0.2 to 0.4W/cm 2 E.g., 0.2 to 0.25W/cm 2 ，0.25～0.3W/cm 2 ，0.3～0.35W/cm 2 ，0.35～0.4W/cm 2 . The distribution of the heating line 3 in the heating operation section 4 is not limited as long as the power density is ensured, and high heating efficiency and heating uniformity can be ensured.
The utility model also provides a battery module, battery module adopts the heating plate.
The utility model discloses a working principle of heating plate as follows:
when the operating condition of heating plate, set up heating plate 1 round battery module to make the side of heating operation portion 5 and treating interior electric core of heated battery module laminate mutually, the terminal surface of electric core laminates mutually in connecting portion and the battery module, is connected heating terminal 2 and external power supply.
An external power supply connected to the heating terminal 2 is used to supply power to the heating wire 4 to generate heat, and then the heating operation part 5, which is electrically heated, is used to heat the battery module.
To sum up, the utility model adopts the integrally formed heating plate, realizes the solderless series connection of a plurality of heating operation parts, avoids adopting the series connection mode of wire welding, has a solderless series connection structure, has higher stability, and can bear the extrusion, stretching and even bending of external force; the expansion hole design can effectively improve the phenomenon that the heating sheet expands and deforms under the heated state, further improve the safety and prolong the service life of the heating sheet; the battery module adopting the heating plate has better safety. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a heating plate, its characterized in that, includes heating plate (1), heating plate (1) is integrated into one piece, heating plate (1) includes insulating layer (2) and inlays and establishes heating circuit (3) in insulating layer (2), heating plate (1) includes heating operation portion (4) that a plurality of is established ties, is equipped with connecting portion (5) between two adjacent heating operation portions (4).
2. A heat patch according to claim 1, wherein: the heating device is characterized by further comprising heating terminals (6), wherein two ends of the heating sheet (1) are electrically connected with the two heating terminals (6) respectively.
3. A heat patch according to claim 1, wherein: the heating operation part (4) is provided with a plurality of expansion holes (7) penetrating through the insulating layer (2);
and/or a first insulating protection sticking ear (8) is arranged on the outer surface of the joint of the connecting part (5) and the heating operation part (4).
4. A heat patch according to claim 3, wherein: the section of the expansion hole (7) is in a round-corner rectangular shape.
5. A heat patch according to claim 1, wherein: heating operation portion (4), heating plate (1) still includes heat conduction viscose layer (9), heat conduction viscose layer (9) are located the surface of insulating layer (2).
6. A heat patch according to claim 2, wherein: and two ends of the heating circuit (3) are respectively and electrically connected with the two heating terminals (6).
7. A heat patch according to claim 6, wherein: the heating circuit is characterized by further comprising a lead (10), wherein two ends of the heating circuit (3) are electrically connected with the two heating terminals (6) through the lead (10) respectively.
8. A heat patch according to claim 7, wherein: and a second insulating protection sticking ear (11) is arranged on the outer surface of the joint of the heating circuit (3) and the lead (10).
9. A heat patch according to claim 1, wherein: the shape of the heating operation part (4) is matched with the side surface of the battery core in the battery module to be heated;
and/or the length of the connecting part (5) is matched with the length of the end face of the battery core in the battery module to be heated;
and/or the thickness of the heating sheet (1) is 0.3-1.2 mm;
and/or, in the heating operation part (4), the heating line (3) is bent in a continuous U shape;
and/or the power density of the connecting part (5) is less than the power density of the heating operation part (4);
and/or the power density of the heating operation part (4) is 0.2-0.4W/cm 2 。
10. A battery module, its characterized in that: the battery module employs the heating sheet according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221383330.XU CN217740644U (en) | 2022-06-02 | 2022-06-02 | Heating plate and battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221383330.XU CN217740644U (en) | 2022-06-02 | 2022-06-02 | Heating plate and battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217740644U true CN217740644U (en) | 2022-11-04 |
Family
ID=83840654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221383330.XU Active CN217740644U (en) | 2022-06-02 | 2022-06-02 | Heating plate and battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217740644U (en) |
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2022
- 2022-06-02 CN CN202221383330.XU patent/CN217740644U/en active Active
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