Battery cell thermal management system, battery pack and automobile

Abstract

The utility model provides a battery cell thermal management system, a battery pack and an automobile, and relates to the technical field of battery state management. The battery cell thermal management system comprises: a resistance wire, which is used for heating a battery cell of a battery pack; the first heat conduction assembly is used for being connected with a cold plate of the battery pack, a groove is formed in the first heat conduction assembly, the groove is used for containing the resistance wire, and the first heat conduction assembly is used for receiving heat of the resistance wire and transmitting the heat of the resistance wire to the battery cell. According to the battery cell heat management system, the battery pack and the automobile, the heating efficiency of the battery cell is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery state management, and particularly relates to a battery cell thermal management system, a battery pack and an automobile. BACKGROUND

[0002] The battery pack of an automobile is a core component in a new energy automobile and is responsible for storing and providing electric energy. A thermal management system is arranged on the battery pack, and the main purpose of the thermal management system is to maintain the battery pack to work in a suitable temperature range, so as to ensure the performance, safety and service life of the battery cell.

[0003] The battery cell thermal management system in the related art comprises a cold plate and a heating wire, a cooling liquid can circulate in a refrigerant flow channel of the cold plate, so that the cold plate can cool the battery cell, the heating wire is connected between the cold plate and the battery cell, and the heating wire is powered on to heat the battery cell, so that the cold plate and the heating wire can cooperate to maintain the temperature of the battery cell in a suitable range.

[0004] However, since the resistance wire is usually thin, the contact area of the resistance wire with the battery cell is small, which reduces the heating efficiency of the resistance wire on the battery cell. Utility model content

[0005] The present application provides a battery cell thermal management system, a battery pack and an automobile, to solve the technical problem that the contact area of the resistance wire with the battery cell is small in the related art, thereby reducing the heating efficiency of the resistance wire on the battery cell.

[0006] In a first aspect, the present application provides a battery cell thermal management system, comprising:

[0007] a resistance wire, the resistance wire being used for heating a battery cell of a battery pack;

[0008] a first heat conduction component, the first heat conduction component being used for connecting with a cold plate of the battery pack, a recess is arranged on the first heat conduction component, the recess being used for accommodating the resistance wire, the first heat conduction component being used for receiving heat of the resistance wire and transmitting the heat of the resistance wire to the battery cell.

[0009] In some embodiments, a second heat conduction component is further included, the second heat conduction component being used for being arranged between the resistance wire and the battery cell, the second heat conduction component being used for receiving the heat of the resistance wire and transmitting the heat of the resistance wire to the battery cell.

[0010] In some embodiments, the resistance wire comprises:

[0011] a first connecting section;

[0012] A plurality of second connecting segments are provided, one end of the first connecting segment is connected with the second connecting segment at the end of the plurality of second connecting segments, and the plurality of second connecting segments are arranged along the length direction of the first connecting segment.

[0013] A third connecting segment is arranged between adjacent second connecting segments, and the adjacent two second connecting segments are connected through the third connecting segment.

[0014] In some embodiments, the electrically resistive wire is provided with a plurality of segments, and an electrically connecting assembly is arranged between adjacent electrically resistive wires, and the electrically connecting assembly is used for electrically connecting the adjacent electrically resistive wires.

[0015] In some embodiments, the electrically connecting assembly includes a connecting socket and a connecting plug, the connecting socket and the connecting plug are arranged on the adjacent electrically resistive wires respectively, and the connecting plug is used for plugging or unplugging with the connecting socket to electrically connect or disconnect the adjacent electrically resistive wires.

[0016] In some embodiments, one end of the electrically resistive wire is a first electrically connecting end, and the other end of the electrically resistive wire is a second electrically connecting end, the first electrically connecting end and the second electrically connecting end are arranged on the same side of the cold plate, the first electrically connecting end and the second electrically connecting end are arranged in close proximity to each other, and the first electrically connecting end and the second electrically connecting end are used for connecting with the power supply grounding end of the battery pack.

[0017] In some embodiments, the heat conducting assembly includes a heat conducting glue.

[0018] In some embodiments, the second heat conducting assembly includes a heat conducting film.

[0019] In a second aspect, the application provides a battery pack, including a frame and the cell thermal management system arranged in the frame.

[0020] In a third aspect, the application provides an automobile, including a vehicle body and the cell thermal management system arranged on the vehicle body.

[0021] The application provides an electric core thermal management system, a battery pack and an automobile. The electric core thermal management system provided by the application has the following advantages. The first heat conduction component is arranged, so that the first heat conduction component can transfer the heat generated by the electric resistance wire to the electric core, thereby improving the heating efficiency of the electric resistance wire on the electric core. The recess is arranged, and the electric resistance wire is arranged in the recess. Compared with the related art, the electric resistance wire can have more surfaces in direct contact with the first heat conduction component, thereby increasing the contact area between the electric resistance wire and the first heat conduction component, thereby indirectly improving the heating efficiency of the electric resistance wire on the first heat conduction component, so that the first heat conduction component can more quickly transfer the heat to the electric core, thereby further improving the heating efficiency of the electric resistance wire on the electric core. In addition, the recess is arranged, so that the overall thickness of the first heat conduction component and the electric resistance wire can be reduced, thereby reducing the space occupation of the first heat conduction component and the electric resistance wire in the vertical direction, and indirectly reducing the space occupation of the electric core thermal management system. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0023] Figure 1 A structural schematic view of the first heat conduction component of the electric core thermal management system provided by the embodiment of the application is shown.

[0024] Figure 2 A structural schematic view of the second heat conduction component of the electric core thermal management system provided by the embodiment of the application is shown.

[0025] Figure 3 An enlarged view of part A in Figure 2

[0026] Legend of reference signs:

[0027] 100, electric resistance wire; 110, first connecting section; 120, second connecting section; 130, third connecting section; 140, first power connection end; 150, second power connection end; 160, first wiring end; 170, second wiring end;

[0028] 200, first heat conduction component; 210, recess;

[0029] 300, second heat conduction component;

[0030] 400, electric connection component; 410, connection socket; 420, connection plug;

[0031] 500, cold plate.

[0032] ​The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0034] As described in the background section, the related battery cell thermal management system includes a cold plate and a heating wire. Coolant can circulate in the refrigerant channel of the cold plate, thereby enabling the cold plate to cool the battery cell. The heating wire is connected between the cold plate and the battery cell. By energizing the heating wire, the heating wire can be heated to heat the battery cell, thereby enabling the cold plate and the heating wire to work together to maintain the temperature of the battery cell within a suitable range.

[0035] However, because the resistance wire is usually thin, the contact area between the resistance wire and the battery cell is small, which reduces the heating efficiency of the resistance wire on the battery cell.

[0036] To address the aforementioned technical problems, this application provides a cell thermal management system, a battery pack, and an automobile. By employing thermally conductive adhesive and a thermally conductive film, the adhesive and film can transfer the heat generated by the resistance wire to the cell, thereby improving the heating efficiency of the resistance wire to the cell. By using a groove design, the resistance wire is placed within the groove, increasing the contact area between the resistance wire and the thermally conductive adhesive, thus indirectly improving the heating efficiency of the resistance wire to the thermally conductive adhesive. This allows the thermally conductive adhesive to transfer heat to the cell more quickly, further improving the heating efficiency of the resistance wire to the cell. Furthermore, by employing a first connecting segment, a second connecting segment, and a third connecting segment, with multiple second connecting segments... Furthermore, the multiple second connecting segments are spaced apart along the length of the first connecting segment, which increases the contact area between the multiple second connecting segments and the first and second heat-conducting components, thereby improving the heating efficiency of the multiple second connecting segments on the first and second heat-conducting components, and thus improving the heating efficiency of the first and second heat-conducting components on the battery cell. Because there are multiple third connecting segments, the arrangement of the multiple third connecting segments increases the contact area between the multiple third connecting segments and the first and second heat-conducting components, thereby improving the heating efficiency of the multiple third connecting segments on the first and second heat-conducting components, and thus improving the heating efficiency of the first and second heat-conducting components on the battery cell.

[0037] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes may not be described again in some examples. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0038] In combination Figures 1 to 3 A battery cell thermal management system comprises:

[0039] A resistance wire 100 is used to heat the battery cell of a battery pack.

[0040] A first heat conduction assembly 200 is used to connect with a cold plate 500 of the battery pack. The first heat conduction assembly 200 is provided with a groove 210, which is used to accommodate the resistance wire 100. The first heat conduction assembly 200 is used to receive the heat of the resistance wire 100 and transmit the heat of the resistance wire 100 to the battery cell.

[0041] In the present application, by adopting the arrangement of the first heat conduction assembly 200, the first heat conduction assembly 200 can transmit the heat generated by the resistance wire 100 to the battery cell, thereby improving the heating efficiency of the resistance wire 100 on the battery cell. By adopting the arrangement of the groove 210, the resistance wire 100 is arranged in the groove 210. Compared with the related art, the resistance wire 100 can have more surfaces in direct contact with the first heat conduction assembly 200, thereby increasing the contact area between the resistance wire 100 and the first heat conduction assembly 200, thereby indirectly improving the heating efficiency of the resistance wire 100 on the first heat conduction assembly 200, so that the first heat conduction assembly 200 can transmit the heat to the battery cell more quickly, thereby further improving the heating efficiency of the resistance wire 100 on the battery cell. And by adopting the arrangement of the groove 210, the overall thickness of the first heat conduction assembly 200 and the resistance wire 100 can be reduced, thereby reducing the space occupation of the first heat conduction assembly 200 and the resistance wire 100 in the vertical direction, and indirectly reducing the space occupation of the battery cell thermal management system.

[0042] In combination Figures 1 to 3 The battery cell thermal management system further comprises a second heat conduction assembly 300, which is arranged between the resistance wire 100 and the battery cell. The second heat conduction assembly 300 is used to receive the heat of the resistance wire 100 and transmit the heat of the resistance wire 100 to the battery cell.

[0043] In the present application, by adopting the arrangement of the second heat conduction assembly 300, the second heat conduction assembly 300 can transmit the heat generated by the resistance wire 100 to the battery cell, thereby indirectly increasing the contact area between the resistance wire 100 and the battery cell, and further improving the heating efficiency of the resistance wire 100 on the battery cell; and when the resistance wire 100 transmits heat to the first heat conduction assembly 200, the second heat conduction assembly 300 can transmit the heat of the first heat conduction assembly 200 to the battery cell, thereby further improving the heating efficiency of the resistance wire 100 on the battery cell.

[0044] In combination Figures 1 to 3 , the resistance wire 100 comprises:

[0045] a first connecting section 110;

[0046] a plurality of second connecting sections 120, one end of the first connecting section 110 is connected to the second connecting section 120 at the end of the plurality of second connecting sections 120, and the plurality of second connecting sections 120 are arranged in the length direction of the first connecting section 110;

[0047] a third connecting section 130, the third connecting section 130 is arranged between adjacent second connecting sections 120, and the adjacent two second connecting sections 120 are connected through the third connecting section 130.

[0048] In the present embodiment, the second connecting section 120 is provided with ten, the distance between adjacent second connecting sections 120 in the ten second connecting sections 120 can be set to be the same or different, the second connecting section 120 is arranged perpendicular to the first connecting section 110, adjacent third connecting sections 130 are arranged at both ends of the same second connecting section 120, the third connecting section 130 is parallel to the first connecting section 110, and the third connecting section 130 is perpendicular to the second connecting section 120, the position where the third connecting section 130 is connected to the second connecting section 120 is arranged in an arc shape, and the ten second connecting sections 120 are connected end to end through a plurality of third connecting sections 130.

[0049] In other embodiments, the shape and number of the second connecting section 120 and the third connecting section 130 can be adjusted as needed, for example, the second connecting section 120 is provided with twelve, or the third connecting section 130 is arranged in an arc shape, thereby further increasing the contact area between the resistance wire 100 and the battery cell.

[0050] In the present application, by adopting the arrangement of the first connecting section 110, the second connecting section 120 and the third connecting section 130, because the second connecting section 120 is arranged in multiple, and the multiple second connecting sections 120 are arranged in the length direction of the first connecting section 110, the arrangement of the multiple second connecting sections 120 increases the contact area between the first heat conduction assembly 200 and the second heat conduction assembly 300, thereby improving the heating efficiency of the multiple second connecting sections 120 on the first heat conduction assembly 200 and the second heat conduction assembly 300, and thereby improving the heating efficiency of the first heat conduction assembly 200 and the second heat conduction assembly 300 on the battery cell; because the third connecting section 130 is arranged in multiple, the arrangement of the multiple third connecting sections 130 increases the contact area between the first heat conduction assembly 200 and the second heat conduction assembly 300, thereby improving the heating efficiency of the multiple third connecting sections 130 on the first heat conduction assembly 200 and the second heat conduction assembly 300, and thereby improving the heating efficiency of the first heat conduction assembly 200 and the second heat conduction assembly 300 on the battery cell.

[0051] In combination Figures 1 to 3 , the resistance wire 100 is arranged in multiple sections, and the electric connection assembly 400 is arranged between the adjacent resistance wires 100, and the electric connection assembly 400 is used for electrically connecting the adjacent resistance wires 100.

[0052] In the present embodiment, two sections of resistance wires 100 are arranged on the same cold plate 500, and the two ends of the resistance wire 100 are arranged in sequence in the width direction of the cold plate 500; in other embodiments, the number of resistance wires 100 can be adjusted according to the position of the battery cell, for example, four sections of resistance wires 100 are arranged on the same cold plate 500.

[0053] In the present application, by arranging the resistance wire 100 in multiple sections, the multiple sections of resistance wire 100 can cover more battery cells, thereby improving the heating efficiency on different numbers of battery cells; and when one of the multiple sections of resistance wire 100 is damaged, only the corresponding damaged resistance wire 100 needs to be replaced, without the need to install and replace all the resistance wires 100, thereby improving the convenience of installing and replacing the resistance wire 100; by adopting the arrangement of the electric connection assembly 400, thereby facilitating the power supply to the resistance wire 100 between the adjacent resistance wires 100, and shortening the line length when the resistance wire 100 is powered.

[0054] In combination Figures 1 to 3 , the electric connection assembly 400 includes a connecting socket 410 and a connecting plug 420, the connecting socket 410 and the connecting plug 420 are arranged on the adjacent resistance wires 100 respectively, and the connecting plug 420 is used for plugging or unplugging with the connecting socket 410, so as to electrically connect or disconnect the adjacent resistance wires 100.

[0055] In the embodiment, the first connecting section 110 of one of the resistance wires 100 is disconnected, the opposite ends of the disconnected first connecting section 110 are respectively provided with the first connecting terminals 160 extending towards the other resistance wire 100, one of the groups of adjacent second connecting sections 120 of the other resistance wire 100 is not provided with the third connecting section 130, and the two second connecting sections 120 are respectively provided with the second connecting terminals 170 extending towards the first connecting terminals 160. The connecting sockets 410 are provided with two, and the two connecting sockets 410 are respectively arranged on the two first connecting terminals 160. The connecting plugs 420 are provided with two, and the two connecting plugs 420 are respectively arranged on the two second connecting terminals 170. The two connecting plugs 420 are inserted into the two connecting sockets 410, so that the two resistance wires 100 are connected in series.

[0056] In other embodiments, the two resistance wires 100 can also be connected in parallel through the connecting sockets 410 and the connecting plugs 420.

[0057] In the application, through the arrangement of the connecting sockets 410 and the connecting plugs 420, the electrical connection of the adjacent resistance wires 100 can be realized by inserting or disengaging the connecting plugs 420 from the connecting sockets 410. When the resistance wires 100 are installed and replaced, the installation efficiency and the replacement efficiency of the installer are improved, so that the convenience of the electrical connection or disengagement of the adjacent resistance wires 100 is improved.

[0058] In combination Figures 1 to 3 , one end of the resistance wire 100 is the first electrical terminal 140, and the other end of the resistance wire 100 is the second electrical terminal 150. The first electrical terminal 140 and the second electrical terminal 150 are arranged on the same side of the cold plate 500, and are arranged close to each other. The first electrical terminal 140 and the second electrical terminal 150 are used to connect with the power supply ground terminal of the battery pack.

[0059] In the embodiment, the first electrical terminal 140 is arranged at the end of the first connecting section 110 of one of the resistance wires 100 away from the second connecting section 120, and the second electrical terminal 150 is arranged at the end of the second connecting section 120 of the plurality of second connecting sections 120 of the resistance wire 100 away from the third connecting section 130. The first electrical terminal 140 and the second electrical terminal 150 are arranged in parallel with each other.

[0060] In the present application, by arranging the first power connection end 140 and the second power connection end 150 on the same side of the cold plate 500, and arranging the first power connection end 140 and the second power connection end 150 close to each other, when it is necessary to connect the resistance wire 100 to the power supply ground end of the battery pack, by connecting the first power connection end 140 and the second power connection end 150 on the same side of the cold plate 500 to the power supply ground end of the battery pack, the power supply ground of the resistance wire 100 can be realized, thereby improving the convenience of the power supply ground of the resistance wire 100.

[0061] In combination Figures 1 to 3 , the first heat conduction component 200 includes heat conduction glue.

[0062] In the present embodiment, the heat conduction glue is provided in two pieces, and the two-end resistance wire 100 is arranged on the two pieces of heat conduction glue, and the heat conduction glue is arranged in a rectangular shape; the heat conduction glue is made of silica gel; the heat conduction glue is in a liquid state in the initial state, and can be solidified into a solid state after being applied by the installer at the designated position; in other embodiments, the shape of the heat conduction glue can be adaptively adjusted as needed, for example, the heat conduction glue is arranged in a circular shape.

[0063] In the present application, the heat conduction glue has good heat conduction performance, can effectively transfer the heat generated by the resistance wire 100 to the battery cell, thereby improving the heating efficiency; the heat conduction glue can fill the small gaps between the resistance wire 100 and the battery cell, ensuring uniform distribution of heat energy and avoiding local overheating or uneven heating; the heat conduction glue has good adhesive strength to electronic components and metals, and can firmly fix the resistance wire 100 and the battery cell, reducing the risk of damage caused by vibration or impact; the heat conduction glue usually has good electrical insulation performance, which can prevent short circuit or electrical failure and improve the safety of the battery cell thermal management system; the heat conduction glue has excellent high and low temperature resistance, which can maintain stable performance under extreme temperature conditions that the battery pack may encounter; the heat conduction glue is an elastomer after solidification, which can absorb and reduce vibration, and protect the resistance wire 100 and the battery cell from mechanical impact; the heat conduction glue is easy to extrude and does not flow, which can be applied manually or mechanically, meeting different working environments and process requirements, simplifying the production process compared with traditional heating films, and improving the installation efficiency of the heat conduction glue and the resistance wire 100 by the installer; since the heat conduction glue can be quickly solidified and can be automatically operated, the production efficiency can be improved and the production cost can be reduced.

[0064] In combination Figures 1 to 3 , the second heat conduction component 300 includes a heat conduction film.

[0065] In this embodiment, the heat-conducting film is provided with two pieces, and the resistance wire 100 is arranged on each of the two pieces of heat-conducting film. The heat-conducting film is in a rectangular shape. The material of the heat-conducting film can be graphite, graphene, or metal (such as copper or aluminum). The graphite and graphene heat-conducting film is widely used in heat conduction due to its high temperature resistance, small thermal expansion coefficient, good thermal and electrical conductivity, stable chemical properties, and large plasticity. In other embodiments, the shape of the heat-conducting film can be adjusted as needed, for example, the heat-conducting film can be in a circular shape.

[0066] In this application, the heat-conducting film generally has high thermal conductivity, which can quickly transfer the heat generated by the resistance wire 100 to the battery cell, thereby improving the heating efficiency. The heat-conducting film can uniformly distribute heat and reduce the temperature difference between the battery cells, ensuring the consistency of the internal temperature of the battery pack. The heat-conducting film is generally thin, which helps to reduce the weight of the battery pack and improve the energy efficiency ratio. The heat-conducting film is easy to process and install, and can adapt to different shapes and sizes of the battery pack, facilitating large-scale production and application. The heat-conducting film has good flexibility and can adapt to the irregular shape inside the battery pack to ensure full contact with the battery cell. The heat-conducting film can quickly respond to temperature changes and adjust the heating in a timely manner to adapt to the rapid changes in the temperature of the battery pack.

[0067] The embodiments of the present application also provide a battery pack, which comprises a frame and the battery cell thermal management system of any of the above embodiments arranged in the frame.

[0068] The specific structure of the battery cell thermal management system has been described in detail in the above embodiments, and will not be repeated here.

[0069] The embodiments of the present application also provide an automobile, which comprises a vehicle body and the battery cell thermal management system of any of the above embodiments arranged on the vehicle body.

[0070] The specific structure of the battery cell thermal management system has been described in detail in the above embodiments, and will not be repeated here.

[0071] The automobile provided by the embodiment of the application has the following advantages: the heat management system of the battery is arranged, the heat-conducting glue and the heat-conducting film are arranged, the heat-conducting glue and the heat-conducting film can transmit the heat generated by the resistance wire 100 to the battery, and the heating efficiency of the resistance wire 100 on the battery is improved; the recess 210 is arranged, the resistance wire 100 is arranged in the recess 210, the contact area between the resistance wire 100 and the heat-conducting glue is increased, the heating efficiency of the resistance wire 100 on the heat-conducting glue is indirectly improved, the heat-conducting glue can transmit the heat to the battery more quickly, and the heating efficiency of the resistance wire 100 on the battery is further improved; the first connecting section 110, the second connecting section 120 and the third connecting section 130 are arranged, the second connecting section 120 is arranged in multiple, the multiple second connecting sections 120 are arranged along the length direction of the first connecting section 110 at intervals, the arrangement of the multiple second connecting sections 120 increases the contact area between the first heat-conducting assembly 200 and the second heat-conducting assembly 300, the heating efficiency of the multiple second connecting sections 120 on the first heat-conducting assembly 200 and the second heat-conducting assembly 300 is improved, and the heating efficiency of the first heat-conducting assembly 200 and the second heat-conducting assembly 300 on the battery is improved; the third connecting section 130 is arranged in multiple, the arrangement of the multiple third connecting sections 130 increases the contact area between the first heat-conducting assembly 200 and the second heat-conducting assembly 300, the heating efficiency of the multiple third connecting sections 130 on the first heat-conducting assembly 200 and the second heat-conducting assembly 300 is improved, and the heating efficiency of the first heat-conducting assembly 200 and the second heat-conducting assembly 300 on the battery is improved.

[0072] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0073] It is to be understood that the application is not limited to the precise construction here described and as shown in the attached drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is to be indicated by the appended claims, rather than the examples described herein.

Claims

1. An electric cell thermal management system, characterized by, include: A resistance wire (100) is used to heat the cells of the battery pack; A first heat-conducting component (200) is used to connect to the cold plate (500) of the battery pack. The first heat-conducting component (200) is provided with a groove (210) for accommodating the resistance wire (100). The first heat-conducting component (200) is used to receive the heat of the resistance wire (100) and transfer the heat of the resistance wire (100) to the battery cell.

2. The cell thermal management system of claim 1, wherein, It also includes a second heat-conducting component (300), which is disposed between the resistance wire (100) and the battery cell. The second heat-conducting component (300) is used to receive the heat of the resistance wire (100) and transfer the heat of the resistance wire (100) to the battery cell.

3. The cell thermal management system of claim 1, wherein, The resistance wire (100) comprises: First connecting segment (110); The second connecting segment (120) is provided in multiple ways. One end of the first connecting segment (110) is connected to the end of the second connecting segment (120) among the multiple second connecting segments (120). The multiple second connecting segments (120) are spaced apart along the length direction of the first connecting segment (110). The third connecting segment (130) is provided between adjacent second connecting segments (120), and two adjacent second connecting segments (120) are connected through the third connecting segment (130).

4. The cell thermal management system of any of claims 1-3, wherein, The resistance wire (100) is provided with multiple segments, and an electrical connection component (400) is provided between adjacent resistance wires (100). The electrical connection component (400) is used to electrically connect adjacent resistance wires (100).

5. The cell thermal management system of claim 4, wherein, The electrical connection assembly (400) includes a connection socket (410) and a connection plug (420), the connection socket (410) and the connection plug (420) being respectively disposed on adjacent resistance wires (100), the connection plug (420) being used to plug into or disconnect from the connection socket (410) to electrically connect or disconnect adjacent resistance wires (100).

6. The cell thermal management system of any of claims 1-3, wherein, One end of the resistance wire (100) is a first power terminal (140), and the other end of the resistance wire (100) is a second power terminal (150). The first power terminal (140) and the second power terminal (150) are disposed on the same side of the cold plate (500). The first power terminal (140) and the second power terminal (150) are disposed close to each other. The first power terminal (140) and the second power terminal (150) are used to connect to the power supply grounding terminal of the battery pack.

7. The cell thermal management system of any of claims 1-3, wherein, The first thermally conductive component (200) includes thermally conductive adhesive.

8. The cell thermal management system of claim 2, wherein, The second thermally conductive component (300) includes a thermally conductive film.

9. A battery pack, characterized by, It includes a frame and a cell thermal management system as described in any one of claims 1-8, disposed within the frame.

10. An automobile characterized by comprising: It includes a vehicle body and a cell thermal management system as described in any one of claims 1-8, which is disposed on the vehicle body.

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