A heating structure based on cylindrical battery cells

Abstract

This utility model relates to the field of cylindrical battery cells and discloses a heating structure based on cylindrical battery cells. It includes a heating unit for heating an object to be heated, and an installation unit. The installation unit includes a support component and an auxiliary component disposed inside the support component. The support component is used to install the heating unit. The heating unit includes a heating film with strip-shaped gaps cut inside. The heating film includes heating wires, which can be heated by energizing them. While ensuring good heating effect on the cylindrical battery cell, the amount of heating film used can be reduced by cutting the heating film, thereby reducing costs. Furthermore, by setting a heating mounting plate, the heating film does not need to be directly installed on the bottom of the battery box, thus ensuring the flatness of the heating film after installation, facilitating the assembly of the cylindrical battery cell.

Description

Technical Field

[0001] This utility model relates to the field of cylindrical battery cells, and in particular to a heating structure based on cylindrical battery cells. Background Technology

[0002] As a key component for regulating battery temperature, the battery heating film is mainly installed on the outer surface of the battery. When electricity is applied, it converts electrical energy into heat energy, thereby rapidly heating the power battery from a low temperature to the optimal temperature, improving battery performance, lifespan, and safety.

[0003] In the CTP (Cell to Pack) solution for cylindrical cells, adding a heating film to the bottom of the cylindrical cell facilitates assembly and reduces the risk of the heating film detaching and burning out. However, using a single heating film to heat the cylindrical cell is still slightly more expensive. Furthermore, the bottom of the battery pack is usually uneven due to reinforcing ribs, solder joints, and other structures, which affects the arrangement and installation of the heating film and cylindrical cells. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is that the cost of the whole heating film is slightly high and the uneven bottom of the battery box makes it difficult to arrange and install the heating film and cylindrical battery cells.

[0005] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes a heating structure based on a cylindrical battery cell, which includes,

[0006] A heating unit, wherein the heating unit is used to heat the item to be heated;

[0007] The installation unit includes a support component and an auxiliary component disposed inside the support component;

[0008] The support component is used to mount the heating unit.

[0009] In a preferred embodiment of the heating structure based on cylindrical battery cells described in this utility model: the heating unit includes a heating film, and the heating film has strip-shaped gaps cut inside.

[0010] In a preferred embodiment of the heating structure based on a cylindrical battery cell described in this utility model: the heating film includes a heating wire, and energizing the heating wire can cause the heating wire to heat up.

[0011] In a preferred embodiment of the heating structure based on cylindrical battery cells described in this utility model: the heating film further includes a first insulating film disposed on one side of the heating wire, and a second insulating film disposed on the other side of the heating wire.

[0012] In a preferred embodiment of the heating structure based on cylindrical battery cells described in this utility model: the supporting component includes a heating mounting plate and a bottom surface disposed on the outer side of the heating mounting plate.

[0013] In a preferred embodiment of the heating structure based on cylindrical battery cells described in this utility model: the auxiliary component includes a groove formed inside the heating mounting plate and a reinforcing rib plate fixedly connected to the outside of the heating mounting plate.

[0014] In a preferred embodiment of the heating structure based on a cylindrical battery cell described in this utility model: the heating film is disposed inside the groove, and the heating film is bonded and fixed to the groove by thermally conductive adhesive.

[0015] In a preferred embodiment of the heating structure based on cylindrical battery cells described in this utility model: the reinforcing rib is disposed inside the strip-shaped gap, and both sides of the reinforcing rib are in contact with the heating film.

[0016] The beneficial effects of this utility model are as follows: while ensuring good heating effect on cylindrical cells, the amount of heating film used can be reduced by cutting the heating film, thereby reducing costs. In addition, by setting a heating mounting plate, the heating film does not need to be directly installed on the bottom of the battery box, thus ensuring the flatness of the heating film after installation, which facilitates the assembly of cylindrical cells. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein:

[0018] Figure 1 A schematic diagram of the heating unit of this utility model is shown;

[0019] Figure 2 A schematic diagram of the heating film of this utility model is shown;

[0020] Figure 3 A schematic diagram of the installation unit of this utility model is shown;

[0021] Figure 4 A schematic diagram of the heating mounting plate of this utility model is shown;

[0022] Figure 5 An assembly diagram of this utility model is shown;

[0023] Figure 6 A schematic diagram of the cylindrical battery cell installation according to this utility model is shown. Detailed Implementation

[0024] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0025] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0026] Reference Figures 1-6 This embodiment provides a heating structure based on a cylindrical battery cell, including:

[0027] Heating unit 1 is used to heat the item to be heated;

[0028] Installation unit 2 includes a support component 21 and an auxiliary component 22 disposed inside the support component 21;

[0029] The support component 21 is used to mount the heating unit 1.

[0030] In use, the mounting unit 2 is installed inside the battery box, the heating unit 1 is placed outside the support component 21, and the cylindrical battery cell A is placed outside the heating unit 1. By energizing the heating unit 1, the heating unit 1 can generate heat, thereby heating the cylindrical battery cell A.

[0031] As one embodiment provided in this application, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 The heating unit 1 includes a heating film 11, and the heating film 11 has strip-shaped gaps 12 cut inside.

[0032] The heating film 11 includes a heating wire 111, which can be heated by energizing the heating wire 111.

[0033] The heating wire 111 can be made of copper.

[0034] The heating film 11 also includes a first insulating film 112 disposed on one side of the heating wire 111, and a second insulating film 113 disposed on the other side of the heating wire 111;

[0035] The first insulating film 112 and the second insulating film 113 may be made of polyimide.

[0036] As attached Figure 1As shown, during the preparation of the heating film 11, the complete heating film can be cut to create strip-shaped gaps 12 inside the heating film 11. The cut-off portion of the heating film can be fitted with wires before being used.

[0037] Therefore, when heating cylindrical cell A, this application does not require the use of a complete heating film, but only a partial heating film, which can significantly reduce the cost of heating film.

[0038] When the heating wire 111 inside the heating film 11 is energized, the heating wire 111 will generate heat, thereby enabling the heating film 11 to heat the cylindrical battery cell A.

[0039] During installation, thermally conductive adhesive should be applied to the top of the heating film 11, and an epoxy board should be laid on top of the heating film 11. Then, thermally conductive adhesive should be applied to the top of the epoxy board, and cylindrical battery cell A modules should be stacked on top of the epoxy board so that the cylindrical battery cell A is adhered to the top of the epoxy board through the thermally conductive adhesive.

[0040] It is worth noting that when cylindrical cell A is placed on top of the epoxy board, the bottom of cylindrical cell A should be in contact with the epoxy board.

[0041] As one embodiment provided in this application, such as Figures 3-5 The support component 21 includes a heating mounting plate 211 and a bottom surface 212 disposed on the outer side of the heating mounting plate 211;

[0042] The heating mounting plate 211 is a sheet metal part.

[0043] The auxiliary component 22 includes a groove 221 formed inside the heating mounting plate 211, and a reinforcing rib plate 222 fixedly connected to the outside of the heating mounting plate 211.

[0044] The heating film 11 is disposed inside the groove 221, and the heating film 11 is fixed to the groove 221 by thermally conductive adhesive.

[0045] When using the heating mounting plate 211, ensure that the bottom surface 212 is in contact with the bottom of the battery box.

[0046] Apply thermally conductive adhesive to the inside of groove 221 and attach heating film 11 to the inside of groove 221, and then assemble epoxy board and cylindrical cell A.

[0047] As one embodiment provided in this application, such as Figures 1-6 The reinforcing rib 222 is set inside the strip-shaped gap 12, and both sides of the reinforcing rib 222 are in contact with the heating film 11.

[0048] It is worth noting that, as shown in the attached document Figure 5As shown, when the heating film 11 is pasted inside the groove 221, the reinforcing rib 222 is set inside the strip-shaped gap 12, and both sides of the reinforcing rib 222 are in contact with the heating film 11, so the position of the heating film 11 can be limited to prevent deviation in the laying position of the heating film 11.

[0049] In addition, when installing the heating mounting plate 211 inside the battery box, it should be ensured that the heating mounting plate 211 will not tilt due to unevenness at the bottom of the battery box.

[0050] In summary, while ensuring good heating effect on cylindrical cell A, the amount of heating film 11 used can be reduced by cutting the heating film 11, thereby reducing costs. In addition, by setting the heating mounting plate 211, the heating film 11 does not need to be directly installed on the bottom of the battery box, thus ensuring the flatness of the heating film 11 after installation, which is convenient for the assembly of cylindrical cell A.

[0051] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A heating structure based on a cylindrical battery cell, characterized in that: include, Heating unit (1), the heating unit (1) is used to heat the item to be heated; The installation unit (2) includes a support component (21) and an auxiliary component (22) disposed inside the support component (21); The support component (21) is used to mount the heating unit (1).

2. The heating structure based on a cylindrical battery cell according to claim 1, characterized in that: The heating unit (1) includes a heating film (11), and the heating film (11) has strip-shaped gaps (12) cut inside.

3. The heating structure based on a cylindrical battery cell according to claim 2, characterized in that: The heating film (11) includes a heating wire (111), and energizing the heating wire (111) can cause the heating wire (111) to heat up.

4. The heating structure based on a cylindrical battery cell according to claim 3, characterized in that: The heating film (11) further includes a first insulating film (112) disposed on one side of the heating wire (111) and a second insulating film (113) disposed on the other side of the heating wire (111).

5. The heating structure based on a cylindrical battery cell according to claim 4, characterized in that: The support component (21) includes a heating mounting plate (211) and a bottom surface (212) disposed on the outside of the heating mounting plate (211).

6. The heating structure based on a cylindrical battery cell according to claim 5, characterized in that: The auxiliary component (22) includes a groove (221) formed inside the heating mounting plate (211) and a reinforcing rib plate (222) fixedly connected to the outside of the heating mounting plate (211).

7. The heating structure based on a cylindrical battery cell according to claim 6, characterized in that: The heating film (11) is disposed inside the groove (221), and the heating film (11) is fixed to the groove (221) by thermally conductive adhesive.

8. The heating structure based on a cylindrical battery cell according to claim 6 or 7, characterized in that: The reinforcing rib (222) is disposed inside the strip-shaped gap (12), and both sides of the reinforcing rib (222) are in contact with the heating film (11).

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