Battery cell heat exchange integrated structure, battery pack and power utilization device

Abstract

The utility model relates to a battery cell heat exchange integrated structure, a battery pack and an electric device. The battery cell heat exchange integrated structure comprises an integrated heat exchange structure body, the integrated heat exchange structure body is provided with a plurality of arc-shaped parts, each arc-shaped part is used for making contact with the outer wall face of a cylindrical battery cell, and a communicated heat exchange runner is formed in each arc-shaped part of the integrated heat exchange structure body. Therefore, heat exchange of the plurality of cylindrical battery cells can be realized at the same time. The utility model further provides a battery pack which comprises the battery cell heat exchange integrated structure and a cylindrical battery cell, and the two adjacent integrated heat exchange structures jointly realize heat dissipation and fixation of the cylindrical battery cell. The utility model further provides an electric device which comprises the battery pack provided by the utility model. The heat exchange structure solves the problems of low heat exchange efficiency and low integration degree of the heat exchange structure of the existing cylindrical battery cell, and also solves the problem that the existing cylindrical battery cell is difficult to disassemble, assemble, maintain and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a core heat exchange integrated structure, a battery pack and an electric device. Background Art

[0002] With the rapid development of electric vehicle technology, the battery pack, as its core component, has received extensive attention in terms of its performance and safety. During the operation of the cores in the battery pack, it is necessary to keep them within an appropriate temperature range to ensure their stability and safety. At the same time, it is also necessary to fix their positions to prevent displacement or failure caused by factors such as vibration and impact.

[0003] For cylindrical cores, their unique structural characteristics, such as small bottom area and multiple explosion-proof valve structures, make it difficult to directly apply traditional fixing and heat dissipation methods. Therefore, the design of the thermal management system and fixing structure for cylindrical cores is particularly important.

[0004] Currently, for the thermal management system of cylindrical cores, it is mostly achieved by arranging a serpentine tube structure on the large surface of the core. For example, a serpentine tube assembly and a battery module disclosed in CN217589096U. The serpentine tube assembly includes a serpentine tube body and two liquid accumulation tubes. The serpentine tube body is a flexible serpentine tube body. There are multiple serpentine tube bodies, and the serpentine tube bodies are arranged at intervals. The two ends of the serpentine tube body are respectively a first end and a second end. The first ends of the multiple serpentine tube bodies are connected to the first liquid accumulation tube, and the second ends of the multiple serpentine tube bodies are connected to the second liquid accumulation tube. And the two liquid accumulation tubes are respectively communicated with the multiple serpentine tube bodies. The first liquid accumulation tube is used for liquid inlet, and the second liquid accumulation tube is used for liquid outlet. Although this serpentine tube assembly is flexible, it reduces the precision requirements for processing and assembly, etc., and is convenient for installation with cylindrical cores. However, the contact area between this serpentine tube structure and the cylindrical core is limited, resulting in low heat exchange efficiency. Especially under high-current charge and discharge conditions, it is difficult to meet the rapid cooling requirements of the core; in a low-temperature environment, it is also difficult to achieve rapid heating of the core, thereby affecting the overall performance and life of the battery pack. In addition, the currently widely used aluminum serpentine tube has certain limitations in the manufacturing process and is difficult to further increase the contact area with the cylindrical core, thus limiting the improvement of its heat exchange efficiency.

[0005] A cylindrical battery liquid cooling module disclosed in CN115764066A. The battery module includes a battery module protection housing and a number of cell modules disposed within the battery module protection housing. The cell module is composed of a battery single cell and a single cell protection housing, and the single cell protection housing is disposed outside the battery single cell; the cell modules are arranged in a matrix structure, and gaps are provided between adjacent cell modules and between the cell modules and the battery module protection housing, and fillers are filled in the gaps; the positive connection terminals and negative connection terminals of the battery single cells are alternately arranged and connected in series or in parallel to form the total positive and total negative electrodes of the battery module. The outside of the battery module has a battery module protection housing, and the inside has fillers, and the installation structure is stable and firm, improving the firmness of the entire battery module and the ability to resist external forces. However, this filler not only has poor thermal conductivity, but also is difficult to repair and replace once a cell fails, reducing the recycling rate of the cells.

[0006] Another example is a cylindrical battery liquid cooling module disclosed in CN115764066A. The battery liquid cooling module includes a battery module, and the battery module includes multiple rows of stacked cell groups. Each row of cell groups includes several cylindrical cells. The battery module also includes a liquid cooling sleeve connected to the cylindrical cells; the liquid cooling sleeve has an installation cavity with one end open, and the cylindrical cells are disposed in the installation cavity; a liquid cooling chamber for the heat exchange medium to flow is provided within the liquid cooling sleeve, the liquid cooling chamber surrounds the installation cavity, and liquid inlets and outlets are respectively provided on two side surfaces of the liquid cooling sleeve in the radial direction of the installation cavity, and the liquid inlets and outlets are respectively connected to the liquid cooling chamber; adjacent two liquid cooling sleeves on the cell group are connected to each other through the liquid inlets and outlets. Through the setting of the liquid cooling sleeve, the outer surface of the cylindrical cell can be fully contacted, so as to achieve high-efficiency heat dissipation for the cylindrical cell; the liquid cooling chambers on multiple liquid cooling sleeves on the cell group are connected in series in sequence, and all the cylindrical cells in the entire battery module can be efficiently cooled. However, setting a liquid cooling sleeve for each single cell separately has a large number of components and low integration level, resulting in low assembly efficiency and assembly accuracy. Summary of the Invention

[0007] In view of this, the purpose of the present utility model is to provide a cell heat exchange integrated structure, a battery pack and an electrical device using the same, so as to solve the problems of low heat exchange efficiency and low integration level existing in the existing heat exchange structure of cylindrical cells, and also solve the problems of difficult disassembly, repair and replacement existing in the existing cylindrical cells.

[0008] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0009] A cell heat exchange integrated structure includes an integrated heat exchange structure. The integrated heat exchange structure has a plurality of arc-shaped parts, and each arc-shaped part is used to contact the outer wall surface of a cylindrical cell. The integrated heat exchange structure forms a communicating heat exchange flow channel inside each arc-shaped part to simultaneously realize the heat exchange of a plurality of the cylindrical cells.

[0010] According to the above technical means, by arranging a plurality of arc-shaped parts on the heat exchange structure, each arc-shaped part contacts the outer wall surface of a cylindrical cell respectively, and a heat exchange flow channel is formed inside the arc-shaped part, thereby simultaneously realizing the heat exchange of a plurality of cylindrical cells, improving the heat exchange efficiency. At the same time, the arc-shaped parts of two adjacent integrated heat exchange structures jointly realize the fixing of the cylindrical cell in the X direction and the Y direction, so that the integrated heat exchange structure is used as a fixing structure at the same time, effectively realizing the integration, and solving the problems of low heat exchange efficiency and low integration degree existing in the heat exchange structure of the existing cylindrical cells.

[0011] Preferably, the cell heat exchange integrated structure further includes a fixing bracket, and a plurality of the integrated heat exchange structures are assembled and fixed together through the fixing bracket.

[0012] By setting the fixing bracket, a plurality of integrated heat exchange structures are assembled and fixed together, ensuring the assembly stability of the cell heat exchange integrated structure. And the assembly of the fixing bracket is a mechanical assembly, effectively solving the problems of difficult disassembly, repair and replacement existing in the existing cylindrical cell structure that dissipates heat by setting fillers, as well as the problems of high filling process difficulty, low efficiency and high cost, and improving the utilization rate of cell recycling.

[0013] Preferably, the integrated heat exchange structure forms a limiting platform at one end of the arc-shaped part.

[0014] By forming a limiting platform at one end of the arc-shaped part, the Z-direction limiting of the cylindrical cell is effectively realized.

[0015] Preferably, the integrated heat exchange structure also forms a limiting platform at the other end of the arc-shaped part.

[0016] By also forming a limiting platform at the other end of the arc-shaped part, two ends of the limiting sleeve are formed at one end, and the two limiting platforms jointly realize the Z-direction fixing of the cylindrical cell. Two adjacent integrated heat exchange structures jointly realize the X-direction and Y-direction fixing of the cylindrical cell, and further make the cell heat exchange integrated structure be used as a heat exchange component and a fixing component at the same time, further improving the integration degree.

[0017] Preferably, the integrated heat exchange structure is of a strip-shaped structure, and a plurality of the arc-shaped parts are arranged on both sides of the integrated heat exchange structure along the length direction.

[0018] By setting the integrated heat exchange structure in a strip-shaped configuration and arranging a plurality of arc-shaped portions on both sides of the strip-shaped configuration along the length direction, the heat dissipation and fixation of a plurality of cylindrical battery cells are simultaneously achieved, the heat dissipation effect and assembly efficiency are improved, and the number of components is reduced.

[0019] Preferably, the integrated heat exchange structure is in a strip-shaped configuration, and a plurality of the arc-shaped portions are provided on one side of the integrated heat exchange structure along the length direction.

[0020] By setting the integrated heat exchange structure in a strip-shaped configuration and arranging a plurality of arc-shaped portions on one side of the strip-shaped configuration along the length direction, the heat dissipation and fixation of a plurality of cylindrical battery cells are simultaneously achieved, the heat dissipation effect and assembly efficiency are improved, and the number of components is reduced.

[0021] Preferably, the arc-shaped portion is in a semi-cylindrical configuration.

[0022] Preferably, an inlet and an outlet are provided at the end of the integrated heat exchange structure, and the inlet and the outlet are communicated with the heat exchange flow channel.

[0023] By providing an inlet and an outlet at the end of the integrated heat exchange structure, the coolant or heating medium flows in from the inlet, passes through the heat exchange flow channel, and then flows out from the outlet, ensuring the smooth circulation of the heat exchange liquid.

[0024] The present invention also provides a battery pack, including the battery cell heat exchange integrated structure and the cylindrical battery cells of the present invention, and adjacent two of the integrated heat exchange structures jointly achieve the heat dissipation and fixation of the cylindrical battery cells.

[0025] The present invention also provides an electrical device, including the battery pack of the present invention.

[0026] Advantages of the present invention:

[0027] In the battery cell heat exchange integrated structure of the present invention, by cleverly arranging a plurality of arc-shaped portions on the heat exchange structure, each arc-shaped portion is in close contact with the outer wall surface of the cylindrical battery cell, and a heat exchange flow channel is formed inside the arc-shaped portion, so that not only the simultaneous heat exchange of a plurality of cylindrical battery cells is achieved, but also the heat exchange efficiency is improved. At the same time, the arc-shaped portions of adjacent two integrated heat exchange structures work together to achieve the stable fixation of the cylindrical battery cells in the X direction and the Y direction, so that the integrated heat exchange structure simultaneously serves as a fixing structure, realizing high integration, and solving the problems of low heat exchange efficiency and low integration degree existing in the existing heat exchange structures of cylindrical battery cells. Moreover, it has the advantages of simple structure and low manufacturing cost, improves its market competitiveness, and has the value of popularization and application in the battery technology field. Description of the Drawings

[0028] Figure 1It is a schematic structural diagram of the battery cell heat exchange integrated structure of the present utility model;

[0029] Figure 2 It is a schematic structural diagram of the integrated heat exchange structure (with arc-shaped parts on both sides);

[0030] Figure 3 It is a schematic structural diagram of the integrated heat exchange structure (with an arc-shaped part on one side);

[0031] Figure 4 It is another schematic structural diagram of the integrated heat exchange structure (with arc-shaped parts on both sides);

[0032] Figure 5 It is a partial view of the assembly of the integrated heat exchange structure and the fixing bracket;

[0033] Figure 6 It is a partial view of the integrated heat exchange structure;

[0034] Figure 7 It is a cross-sectional view of the assembly of the battery cell heat exchange integrated structure and the cylindrical battery cell;

[0035] Figure 8 It is a schematic structural diagram of the fixing bracket;

[0036] Wherein, 1 - integrated heat exchange structure, 11 - arc-shaped part, 12 - limiting platform, 13 - inlet, 14 - outlet; 2 - fixing bracket; 3 - cylindrical battery cell. Specific embodiments

[0037] The following will describe the embodiments of the present utility model with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be understood that the preferred embodiments are only for explaining the present utility model, rather than for limiting the protection scope of the present utility model.

[0038] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0039] In the following description, a large number of details are explored to provide a more thorough explanation of the embodiments of the present application. However, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details. Embodiment

[0040] As Figures 1 to 8 shown, a heat exchange integrated structure of an electric core includes an integrated heat exchange structure 1. The integrated heat exchange structure 1 has a plurality of arc-shaped portions 11, and each arc-shaped portion 11 is used to contact the outer wall surface of a cylindrical electric core 3. The integrated heat exchange structure 1 forms a communicating heat exchange flow channel inside each arc-shaped portion 11 to simultaneously realize the heat exchange of a plurality of cylindrical electric cores 3.

[0041] By providing a plurality of arc-shaped portions on the heat exchange structure, each arc-shaped portion contacts the outer wall surface of a cylindrical electric core respectively, and a heat exchange flow channel is formed inside the arc-shaped portion, thereby simultaneously realizing the heat exchange of a plurality of cylindrical electric cores, improving the heat exchange efficiency. At the same time, the arc-shaped portions of two adjacent integrated heat exchange structures jointly realize the fixation of the cylindrical electric core in the X direction and the Y direction, so that the integrated heat exchange structure can be used as a fixing structure at the same time, effectively realizing the integration, and solving the problems of low heat exchange efficiency and low integration degree existing in the heat exchange structure of the existing cylindrical electric core.

[0042] In some embodiments, in order to ensure the stability of the heat exchange integrated structure of the electric core, the heat exchange integrated structure of the electric core is further provided with a fixing bracket 2, so that a plurality of integrated heat exchange structures 1 are assembled and fixed together through the fixing bracket 2. And the assembly using the fixing bracket 2 is a mechanical assembly, which has the advantages of convenient disassembly, repair and replacement, effectively solving the problems of difficult disassembly, repair and replacement existing in the existing cylindrical electric core structure that dissipates heat by setting fillers. It also solves the problems of high filling process difficulty, low efficiency and high cost, and improves the utilization rate of electric core recycling.

[0043] Exemplarily, the positions of a plurality of integrated heat exchange structures 1 close to the ends are assembled and fixed with the fixing bracket 2. The assembly methods of the plurality of integrated heat exchange structures 1 and the fixing bracket 2 can be carried out by means such as clamping, screwing and riveting. For the assembly methods of clamping, screwing and riveting, when one of the integrated heat exchange structures and / or the fixing bracket and / or the cylindrical electric core is damaged, the damaged integrated heat exchange structure and / or the fixing bracket and / or the cylindrical electric core can be directly replaced without damaging other integrated heat exchange structures, fixing brackets and cylindrical batteries, increasing the feasibility of local replacement and repair of the battery.

[0044] In some embodiments, in order to realize the Z-direction limit of the cylindrical electric core, a limit platform 12 is formed at one end of the arc-shaped portion 11 of the integrated heat exchange structure 1, so that one end of the cylindrical electric core 3 abuts against the limit platform 12 to realize the Z-direction limit of one end of the cylindrical electric core 3.

[0045] In some embodiments, in order to further achieve the Z-direction limit of the cylindrical battery cell, a limiting platform 12 is also formed at the other end of the arc-shaped portion 11 of the integrated heat exchange structure 1, so that the other end of the cylindrical battery cell 3 also abuts against the limiting platform 12. The two limiting platforms 12 at both ends of the arc-shaped portion 11 jointly achieve the Z-direction fixation of the cylindrical battery cell 3, and adjacent two integrated heat exchange structures jointly achieve the X-direction and Y-direction fixation of the cylindrical battery cell 3. Furthermore, the battery cell heat exchange integrated structure is used as both a heat exchange component and a fixing component at the same time, further improving the integration, reducing the number of components, and improving the assembly efficiency. Moreover, through the wrapping structure in multiple directions of the upper, lower, and side surfaces, the cylindrical battery cell is effectively prevented from moving in the X-direction, Y-direction, and Z-direction. Among them, the limiting platform 12 provided at the top of the arc-shaped portion 11 of the integrated heat exchange structure 1 can also be used as a tool clamping part.

[0046] In some embodiments, in order to simultaneously achieve the heat dissipation and fixation of multiple cylindrical battery cells 3, the integrated heat exchange structure 1 is arranged in a long strip shape, and a plurality of arc-shaped portions 11 are arranged on both sides of the integrated heat exchange structure 1 along the length direction. With such a design, one integrated heat exchange structure can simultaneously achieve the heat dissipation and fixation of multiple cylindrical battery cells 3, improving the heat dissipation effect and assembly efficiency, and reducing the number of components.

[0047] In some embodiments, in order to simultaneously achieve the heat dissipation and fixation of multiple cylindrical battery cells 3, the integrated heat exchange structure 1 is arranged in a long strip shape, and a plurality of arc-shaped portions 11 are arranged on one side of the integrated heat exchange structure 1 along the length direction. With such a design, one integrated heat exchange structure can simultaneously achieve the heat dissipation and fixation of multiple cylindrical battery cells 3, improving the heat dissipation effect and assembly efficiency, and reducing the number of components.

[0048] Among them, the integrated heat exchange structure 1 with arc-shaped portions 11 arranged on both sides is located in the middle of the two integrated heat exchange structures 1 with arc-shaped portions 11 arranged on one side. The integrated heat exchange structure 1 with arc-shaped portions 11 arranged on both sides can simultaneously achieve the heat exchange and fixation of the cylindrical battery cells 3 on both sides, and the integrated heat exchange structure 1 with arc-shaped portions 11 arranged on one side can achieve the heat exchange and fixation of the cylindrical battery cells 3 on one side, avoiding the problems of space waste and reduced heat exchange efficiency caused by arranging the integrated heat exchange structure with arc-shaped portions on both sides on the outermost side.

[0049] Exemplarily, the arc-shaped portion 11 is in a semi-cylindrical structure. The arc-shaped portion 11 in the semi-cylindrical structure can be completely and closely attached to half of the outer wall surface of the cylindrical battery cell 3, thereby improving the heat exchange efficiency.

[0050] Through experimental tests, compared with the heat exchange structure of an aluminum serpentine tube structure, the heat exchange structure of the arc-shaped portion in the semi-cylindrical structure can increase the contact area with the outer wall surface of the cylindrical battery cell from 40% to 80%, greatly improving the heat exchange capacity between the thermal management system and the battery cell under high current and low temperature.

[0051] Exemplarily, the interior of the arc portion 11 is a thin-walled cavity structure with an arc-shaped configuration to serve as a heat exchange flow channel. The wall thickness of the thin-walled cavity structure is less than 1 mm to improve space utilization and heat exchange efficiency. Reinforcing ribs can be arranged in the thin-walled cavity according to actual requirements to ensure the strength of the heat exchange flow channel.

[0052] Exemplarily, the integrated heat exchange structure 1 is made of plastic materials such as polyamide (PA), polyketone (PK), etc.

[0053] In some embodiments, in order to ensure the smooth flow of the heat exchange liquid, an inlet 13 and an outlet 14 are provided at the end of the integrated heat exchange structure 1. The inlet 13 and the outlet 14 are connected to the heat exchange flow channel, so that the coolant or the heating medium flows in from the inlet and then flows out from the outlet after passing through the heat exchange flow channel, ensuring the smooth flow of the heat exchange liquid.

[0054] Exemplarily, an inlet 13 can be provided at one end of the integrated heat exchange structure 1, and an outlet 14 can be provided at the other end. With such a design, the flow distance of the coolant or the heating medium inside the integrated heat exchange structure 1 is approximately equal to the length of the integrated heat exchange structure 1.

[0055] An inlet 13 and an outlet 14 can also be provided at the same end of the integrated heat exchange structure 1. In the case of being provided at the same end, the inlet 13 and the outlet 14 can be arranged at intervals along the height direction of the end of the integrated heat exchange structure 1. With such a design, the flow distance of the coolant or the heating medium inside the integrated heat exchange structure 1 is approximately equal to twice the length of the integrated heat exchange structure 1, thereby effectively improving the heat exchange efficiency.

[0056] In some embodiments, a battery is provided, including the cell heat exchange integrated structure and the cylindrical cell 3 in any of the above embodiments. Two adjacent integrated heat exchange structures 1 jointly realize the heat dissipation and fixation of the cylindrical cell 3.

[0057] Exemplarily, after the integrated heat exchange structure 1 of the cell heat exchange integrated structure in any of the above embodiments is fixedly connected to the battery box body by gluing or other forms, the problem of axial movement of the cell caused by the recoil during thermal runaway eruption of the cell can be solved, and the battery safety can be improved.

[0058] Among them, the design of the limiting platform of the integrated heat exchange structure 1 located at the top of the cylindrical cell can also limit the axial movement of the cell during the bottom eruption of thermal runaway, avoiding the pulling and cracking of the high-voltage connectors between the cells and also avoiding safety risks such as the contact between the cell and the upper cover. The design of the limiting platform of the integrated heat exchange structure 1 located at the bottom of the cylindrical cell is fixedly connected to the battery box body using structural adhesive, further effectively limiting the axial movement of the cell. At the same time, the limiting platform of the integrated heat exchange structure 1 located at the bottom of the cylindrical cell avoids the explosion-proof valve at the bottom of the cylindrical cell, and together with the exhaust channel structure on the battery box body, enables the gas to erupt normally when the cell is in thermal runaway and be discharged out of the battery pack along the box body.

[0059] In some embodiments, an electrical device is further provided, including the battery in any of the above embodiments.

[0060] In summary, for the core heat exchange integrated structure of the present utility model, by ingeniously arranging a plurality of arc portions on the heat exchange structure, each arc portion is in close contact with the outer wall surface of the cylindrical core, and a heat exchange flow channel is formed inside the arc portion. Thus, not only simultaneous heat exchange of a plurality of cylindrical cores is achieved, but also the heat exchange efficiency is improved. At the same time, the arc portions of two adjacent integrated heat exchange structures cooperate to achieve stable fixation of the cylindrical core in the X direction and the Y direction, so that the integrated heat exchange structure also serves as a fixing structure, realizing high integration, and solving the problems of low heat exchange efficiency and low integration degree existing in the heat exchange structure of the existing cylindrical core. Moreover, it has the advantages of simple structure and low manufacturing cost, enhancing its market competitiveness and having the value of popularization and application in the field of battery technology.

[0061] The above embodiments are only illustrative of the principles and effects of the present utility model, rather than limiting the present application. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present application should still be covered by the claims of the present application.

Claims

1. A battery core heat exchange integrated structure, characterized in that: The integrated heat exchange structure (1) comprises a plurality of arc-shaped portions (11), each of the arc-shaped portions (11) being used to contact the outer wall surface of a cylindrical battery core (3), and the integrated heat exchange structure (1) is provided with a connected heat exchange flow channel formed inside each of the arc-shaped portions (11) so as to realize heat exchange for the plurality of cylindrical battery cores (3) at the same time.

2. The battery core heat exchange integrated structure according to claim 1, characterized in that: The battery core heat exchange integrated structure further comprises a fixing bracket (2), and a plurality of the integrated heat exchange structures (1) are assembled and fixed together via the fixing bracket (2).

3. The battery core heat exchange integrated structure according to claim 1, characterized in that: The integrated heat exchange structure (1) forms a limiting platform (12) at one end of the arc-shaped portion (11).

4. The battery core heat exchange integrated structure according to claim 3, characterized in that: The integrated heat exchange structure (1) also forms a limiting platform (12) at the other end of the arc-shaped portion (11).

5. The battery core heat exchange integrated structure according to claim 1, characterized in that: The integrated heat exchange structure (1) is of a long strip-shaped structure, and a plurality of arc-shaped portions (11) are provided on both sides of the integrated heat exchange structure (1) along the length direction.

6. The battery core heat exchange integrated structure according to claim 1, characterized in that: The integrated heat exchange structure (1) is of a long strip-shaped structure, and a plurality of arc-shaped portions (11) are provided on one side of the integrated heat exchange structure (1) along the length direction.

7. The battery core heat exchange integrated structure according to claim 1, characterized in that: The arc-shaped portion (11) is in a semi-cylindrical structure.

8. The battery core heat exchange integrated structure according to claim 1, characterized in that: An inlet (13) and an outlet (14) are provided at the end of the integrated heat exchange structure (1), and the inlet (13) and the outlet (14) are connected to the heat exchange flow channel.

9. A battery pack, characterized in that: It comprises a battery core heat exchange integrated structure and a cylindrical battery core (3) according to any one of claims 1 to 8, wherein two adjacent integrated heat exchange structures (1) jointly achieve heat dissipation and fixation of the cylindrical battery core (3).

10. An electrical device, characterized in that: Comprising the battery pack as claimed in claim 9.

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