Side rising type cooling board, processing method for side rising type cooling board, and battery pack

Abstract

To provide a side rising type cooling board for performing a thermal conversion with a cell by being adhered to a side surface along a thickness direction of a body itself in the cell, a processing method for the side rising type cooling board, and a battery pack.SOLUTION: A side rising type cooling board 100 for performing a thermal conversion with a cell by being adhered to a side surface along a thickness direction itself in the cell, comprises: a flow channel pipe 10; and a heat conduction board 20. The flow channel pipe is a thermal conductive member in a plastic type, and the heat conduction board is a flexible heat conduction member, and is directly implanted and molded to an outer surface of the flow channel pipe so as to enable a coating of the flow channel pipe. In the flow channel pipe, a flow channel cavity 101 for introducing a thermal conversion medium is opened, and the thermal conductive board is adhered to the cell so that the heat conversion medium receives heat from the cell via the heat transmission board and the flow channel pipe.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present application relates to the technical field of battery cooling, and particularly to a side-standing cold plate, a processing method of the side-standing cold plate, and a battery pack.

Background Art

[0002] In the operating process of a battery pack, the internal cells release a large amount of heat. If heat dissipation is not carried out in a timely manner, the service life of the cells will be reduced. Conventionally, in order to dissipate heat from the cells, it is common to provide a liquid cooling plate at the bottom of the cells.

[0003] In the prior art, the liquid cooling plate is usually a press brazing type liquid cooling plate. Since its material is an aluminum alloy, it not only has a large weight and is disadvantageous for weight reduction, but also has a high cost. And after the aluminum alloy parts are brazed and connected to each other, the generated welding defects not only affect the flatness of the liquid cooling plate and reduce the heat exchange efficiency of the liquid cooling plate, but also significantly reduce the material strength of the liquid cooling plate, and there are certain security risks in the use process of the liquid cooling plate.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Based on this, in order to solve the problems of high cost and poor safety in the conventional liquid cooling plate, it is necessary to provide a side-standing cold plate, a processing method of the side-standing cold plate, and a battery pack.

Means for Solving the Problems

[0005] According to the present application, it is for performing heat exchange with the cell by being attached to a side surface along the thickness direction of the cell itself, and includes a flow path tube and a heat conduction plate. The flow path tube is a plastic heat conduction member, and the heat conduction plate is a flexible heat conduction member. The heat conduction plate is directly injection molded onto the outer surface of the flow path tube so as to be able to cover the flow path tube. A flow path cavity for introducing a heat exchange medium is opened in the flow path tube. The heat conduction plate is for being attached to the cell so that the heat exchange medium can receive the heat transferred from the cell through the heat conduction plate and the flow path tube, and a side-standing cold plate is provided.

[0006] In one embodiment, the material of the flow path tube is a heat conductive plastic, and the flow path tube is extrusion molded by the heat conductive plastic.

[0007] With such a configuration, it can be understood that the molding of the flow path tube becomes simple, and the cost can be reduced while effectively improving the processing speed of the flow path tube.

[0008] In one embodiment, the flow path tube includes branch pipes and a curved pipe. The number of the branch pipes is plural, and the plural branch pipes are arranged at intervals along the width direction of the side-standing cold plate. The curved pipe is connected to the same-side ends of two adjacent branch pipes and communicates the two branch pipes.

[0009] With such a configuration, it can be understood that the flow length and flow area of the heat exchange medium are further increased, and the heat exchange effect of the cell by the side-standing cold plate is effectively improved.

[0010] In one embodiment, the branch pipe and the curved pipe are integrally bent and formed.

[0011] With such a configuration, it can be understood that the structural strength of the flow path tube is greatly improved, the processing difficulty of the branch pipe and the curved pipe is reduced, and the assembly efficiency of the branch pipe and the curved pipe is improved.

[0012] In one embodiment, the branch pipe and the curved pipe have a separate structure, and the branch pipe and the curved pipe are fixed by welding.

[0013] With such a configuration, it can be understood that the connection and fixation between the branch pipe and the curved pipe can be similarly realized, and the bending radius of the curved pipe can be more easily controlled, improving the accuracy of component processing and combination.

[0014] In one embodiment, the material of the heat conduction plate is heat-conductive silica gel.

[0015] With such a configuration, it can be understood that not only the heat conduction needs of the heat conduction plate are satisfied, but also the effective absorption of the tolerance between cells and the expansion force generated in the cycle by the heat conduction plate is guaranteed, effectively improving the overall safety.

[0016] In one embodiment, support holes are provided in the heat conduction plate, and the support holes are for inserting support columns in the injection mold to press the flow path pipe.

[0017] With such a configuration, it can be understood that the generation of a gap between the heat conduction plate and the flow path pipe due to the shaking of the flow path pipe can be avoided, thereby effectively improving the combination accuracy of the heat conduction plate and the flow path pipe while improving the qualified rate of the product.

[0018] In one embodiment, the vertical cold plate further includes an inlet pipe and an outlet pipe, and the inlet pipe and the outlet pipe are respectively connected to both ends of the flow path pipe and communicate with the flow path cavity.

[0019] With such a configuration, it can be understood that it is advantageous for the connection and fixation between the flow path pipe and the external cooling pipeline, and the inflow and outflow of the heat exchange medium are convenient.

[0020] The present application includes a plurality of cells and the side-standing cold plate described in any one of the above embodiments. The plurality of cells are arranged at intervals along the thickness direction of the cells themselves. The side-standing cold plate further provides a battery pack that is sandwiched between two adjacent cells and connected to the two adjacent cells.

[0021] The present application is a processing method for the side-standing cold plate for processing the above side-standing cold plate, including a step of processing a flow path tube having a flow path cavity inside with a thermally conductive plastic, and a step of directly injection molding the thermally conductive plate on the outer surface of the flow path tube using thermally conductive silica gel so that the thermally conductive plate wraps the outer surface of the flow path tube. The present application further provides a processing method for the side-standing cold plate including the above steps.

Effect of the Invention

[0022] According to the vertical cold plate, the processing method of the vertical cold plate, and the battery pack provided by the present application, compared with the prior art, the vertical cold plate is attached to and cooled on the side surface along its own thickness direction in the cell, that is, the large surface of the cell. Compared with the method in which the conventional liquid cooling plate is provided at the bottom of the cell, the contact area between the vertical cold plate and the cell is significantly increased, the cooling intensity for the cell is effectively improved, and the problem of uneven heat dissipation of the cell is reduced, thereby improving the usage reliability of the cell. Furthermore, by using a plastic heat conduction member for the flow path tube, the heat conduction performance of the flow path tube itself is guaranteed, and due to the low cost of plastic, the material cost of the entire vertical cold plate is reduced. Moreover, since the weight of plastic is lighter than that of the conventional aluminum alloy, the weight of the vertical cold plate is effectively reduced, and the need for weight reduction can be satisfied. On the other hand, by using a flexible heat conduction member for the heat conduction plate, the heat conduction plate can be better attached to the cell due to its own flexibility, improving the contact effect between the heat conduction plate and the cell, and significantly improving the heat exchange efficiency between the vertical cold plate and the cell. And providing a flexible heat conduction plate is advantageous for absorbing the tolerance of the cell or the expansion force of the cell after the cell expands in the cycle, and can avoid the expansion force of the cell pressing the flow path tube to rupture the flow path tube and leak the heat exchange medium. Therefore, the vertical cold plate can ensure high safety even after being used for a long time. In addition, if the processing method of directly injecting and molding the heat conduction plate on the surface of the flow path tube is adopted, the molding becomes simple, the assembly steps of the heat conduction plate and the flow path tube are effectively reduced, the molding efficiency of the vertical cold plate can be improved, the disadvantage of high energy consumption in the conventional soldering process can be avoided, and the adverse effect on the flatness of the product caused by soldering can be avoided, further improving the heat exchange efficiency and reducing the cost.

Brief Description of the Drawings

[0023] To more clearly explain the technical solutions in the embodiments of the present application or the prior art, the drawings necessary for the description of the embodiments or the prior art will be briefly described. However, the drawings described below only relate to some embodiments of the present application, and it is obvious that those skilled in the art can obtain other drawings from these drawings without performing inventive labor.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0024] Hereinafter, to make the above objects, features, and advantages of the present application clearer and easier to understand, specific embodiments of the present application will be described in detail with reference to the drawings. To fully understand the present application, many specific details will be described in the following description. However, the present application can be implemented in many other forms different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0025] In addition, when a component is referred to as being "fixed to" or "provided on" another component, the component may be directly located on the other component or a component may be interposed therebetween. When a component is considered to be "connected to" another component, it may be directly connected to the other component or a component may be interposed therebetween at the same time. Terms such as "vertical", "horizontal", "upper", "lower", "left", and "right" and similar expressions used in the specification of the present application are merely for the purpose of explanation and do not indicate the only embodiment.

[0026] Also, terms such as "first" and "second" are merely for the purpose of explanation and do not indicate or imply relative importance or implicitly indicate the quantity of the technical features indicated. Accordingly, the features defined by "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "a plurality" means at least two, for example two or three, unless otherwise clearly and specifically defined.

[0027] In the present application, unless otherwise clearly specified or limited, the fact that the first feature is "above" or "below" the second feature means that the first feature may be in direct contact with the second feature or the first feature may be in indirect contact with the second feature via an intermediate medium. And the fact that the first feature is "above", "above and over" and "upper surface" of the second feature means that the first feature may be directly above or obliquely above the second feature, or may only indicate that the horizontal height of the first feature is higher than that of the second feature. The fact that the first feature is "below", "below and under" and "lower surface" of the second feature means that the first feature may be directly below or obliquely below the second feature, or may only indicate that the horizontal height of the first feature is lower than that of the second feature.

[0028] Unless otherwise defined, all technical and scientific terms used in the specification of this application shall have the same meaning as commonly understood by those skilled in the technical field to which this application pertains. The terms used in the specification of this application are merely for the purpose of explaining specific embodiments and do not limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the listed items.

[0029] In the operating process of the battery pack, if the internal cells release a large amount of heat and heat dissipation is not carried out in a timely manner, the service life of the cells will be reduced. Conventionally, in order to dissipate heat from the cells, it is common to provide a liquid cooling plate at the bottom of the cells.

[0030] In the prior art, the liquid cooling plate is usually a press brazing type liquid cooling plate. Since its material is an aluminum alloy, it not only has a large weight and is disadvantageous for weight reduction, but also has a high cost. And after the aluminum alloy parts are brazed and connected to each other, the generated welding defects will not only affect the flatness of the liquid cooling plate and reduce the heat exchange efficiency of the liquid cooling plate, but also significantly reduce the material strength of the liquid cooling plate, resulting in certain security risks in the use process of the liquid cooling plate.

[0031] Referring to FIGS. 1 to 5, in order to solve the problems of high cost and poor safety in the conventional liquid cooling plate, the present application provides a side-standing type cold plate 100 used in a battery pack. Specifically, a plurality of cells (not shown) are provided in the battery pack, and the side-standing type cold plate 100 is for attaching to the side surface of the cell along the thickness direction of the cell itself to perform heat exchange with the cell.

[0032] Note that the side surface along the thickness direction of the cell itself can be understood as the large surface of the cell, that is, the side surface with the largest area in the cell. By attaching the side-mounted cold plate 100 to the large surface of the cell for cooling, compared with the conventional method where the liquid cooling plate is provided at the bottom of the cell, the contact area between the side-mounted cold plate 100 and the cell is significantly increased, the cooling intensity for the cell is effectively improved, and the problem of uneven heat dissipation of the cell is reduced, thereby improving the reliability of the cell in use.

[0033] Referring to FIGS. 2 to 4, the side-mounted cold plate 100 according to the present application includes a flow channel pipe 10 and a heat conduction plate 20. The flow channel pipe 10 is a plastic heat conduction member, the heat conduction plate 20 is a flexible heat conduction member, and the heat conduction plate 20 is directly injection-molded on the outer surface of the flow channel pipe 10 so as to cover the flow channel pipe 10. Among them, a flow channel cavity 101 for introducing a heat exchange medium is opened in the flow channel pipe 10, and the heat conduction plate 20 is for being bonded to the cell so that the heat exchange medium can receive the heat transferred from the cell through the heat conduction plate 20 and the flow channel pipe 10.

[0034] By using the flow path pipe 10 as a plastic heat conduction member, the heat conduction performance of the flow path pipe 10 itself is guaranteed, and due to the low cost of plastic, the material cost of the entire side-standing cold plate 100 is reduced. Moreover, since the weight of plastic is lighter than that of the conventional aluminum alloy, the weight of the side-standing cold plate 100 can be effectively reduced to meet the need for weight reduction. On the other hand, by using the heat conduction plate 20 as a flexible heat conduction member, the heat conduction plate 20 can be better bonded to the cell due to its own flexibility, improving the contact effect between the heat conduction plate 20 and the cell, and greatly improving the heat exchange efficiency between the side-standing cold plate 100 and the cell. And providing the flexible heat conduction plate 20 is advantageous for absorbing the tolerance of the cell or the expansion force of the cell after the cell expands in the cycle, and can avoid the expansion force of the cell pressing the flow path pipe 10 to rupture the flow path pipe 10 and leak the heat exchange medium. Therefore, the side-standing cold plate 100 can ensure high safety even after being used for a long time. Also, if the processing method of directly injection molding the heat conduction plate 20 on the surface of the flow path pipe 10 is adopted, the molding becomes simple, the assembly steps of the heat conduction plate 20 and the flow path pipe 10 can be effectively reduced, the molding efficiency of the side-standing cold plate 100 can be improved, the disadvantage of high energy consumption in the conventional soldering process can be avoided, and the adverse effect on the flatness of the product caused by soldering can be avoided, further improving the heat exchange efficiency while reducing the cost.

[0035] Specifically, the heat generated in the cell is transmitted to the heat exchange medium in the flow path cavity 101 through the heat conduction plate 20 and the flow path pipe 10 in sequence, and the heat transfer is realized by the flow of the heat exchange medium. Here, the heat exchange medium may be a cooling medium or a high-temperature medium in order to realize the cooling or heat preservation of the cell.

[0036] In one embodiment, the material of the flow channel tube 10 is a thermally conductive plastic, and the flow channel tube 10 is extruded from the thermally conductive plastic. In the process of extruding the flow channel tube 10 with the thermally conductive plastic, first, the thermally conductive plastic is heated to a molten state, and then, when the molten thermally conductive plastic is passed through a mold, it can be processed into the required shape. In this way, the forming of the flow channel tube 10 becomes simple, and the cost can be reduced while effectively improving the processing speed of the flow channel tube 10. Here, the flow channel tube 10 can be processed and formed by a mold of a corresponding size manufactured according to the actual thermal management needs of different battery packs.

[0037] In addition, the thermally conductive plastic is a material formed by using plastic as a base and filling a thermally conductive material in the plastic base. Its weight is light, and compared with the conventional aluminum alloy, the weight can be reduced by 40 - 50%. And the thermally conductive plastic has good thermal conductivity performance, insulation performance and processing performance, and can meet different usage needs. Therefore, the flow channel tube 10 made of the thermally conductive plastic can overcome the problem that the thermal conductivity efficiency of the conventional plastic is low.

[0038] In addition, the thermal conductivity performance of the material is usually represented by the thermal conductivity. By filling different contents of thermally conductive materials in the plastic base, the thermal conductivity of the thermally conductive plastic can be correspondingly changed to meet different heat exchange needs.

[0039] Here, the plastic base may be PPS, PA6, PA66, LCP, TPE, PC, PP, PPA, PEEK, etc., and the thermally conductive material to be filled may be AlN, SiC, Al2O3, graphite, fibrous high-thermal-conductivity carbon powder, flaky high-thermal-conductivity carbon powder, etc., but they are not listed here one by one.

[0040] Furthermore, in one embodiment, as shown in FIG. 3, the flow path tube 10 includes branch tubes 11 and a curved tube 12. The number of branch tubes 11 is plural, and the plural branch tubes 11 are arranged at intervals along the width direction of the vertical cold plate 100. The curved tube 12 is connected to the same-side ends of two adjacent branch tubes 11 and communicates with the two branch tubes 11.

[0041] By providing a plurality of branch tubes 11 and realizing the turning connection between adjacent branch tubes 11 by means of the curved tube 12, the flow direction of the heat exchange medium in the flow path cavity 101 can be changed, and within the same spatial region, the flow length and flow area of the heat exchange medium can be further increased, effectively improving the heat exchange effect of the cells by the vertical cold plate 100.

[0042] Specifically, the branch tube 11 is provided as a long tube, the curved tube 12 is provided as a U-shaped tube, and both the branch tube 11 and the curved tube 12 are provided in a flat shape. Here, the thickness direction of the branch tube 11 and the curved tube 12 is the same as the thickness direction of the heat conduction plate 20, and both are in the thickness direction of the cells. It should be noted that, as can be easily understood, the branch tube 11 and the curved tube 12 realize indirect contact with the cells by means of their large surfaces, further increasing the contact area and reducing the heat transfer distance between the flow path tube 10 and the cells, realizing effective heat transfer, and greatly improving the heat exchange efficiency. And the thickness of the heat conduction plate 20 can be reduced to improve the space utilization rate.

[0043] In one embodiment, the branch tube 11 and the curved tube 12 are integrally bent and formed. That is, the curved tube 12 can be bent and formed by utilizing the thermoplasticity of the plastic. In this way, while greatly improving the structural strength of the flow path tube 10, the processing difficulty of the branch tube 11 and the curved tube 12 is reduced, and the assembly efficiency of the branch tube 11 and the curved tube 12 is improved.

[0044] In another embodiment, the branch pipe 11 and the curved pipe 12 have a separate structure, and the branch pipe 11 and the curved pipe 12 are fixed by welding. The connection and fixation between the branch pipe 11 and the curved pipe 12 can also be realized by the welding connection method, and the bending radius of the curved pipe 12 can be more easily controlled, improving the accuracy of component processing and combination.

[0045] In one embodiment, as shown in FIG. 2, the vertical cold plate 100 further includes an inlet pipe 30 and an outlet pipe 40. Each of the inlet pipe 30 and the outlet pipe 40 is connected to both ends of the flow path pipe 10 and communicates with the flow path cavity 101.

[0046] Specifically, the inlet pipe 30 and the outlet pipe 40 are fixed to the flow path pipe 10 by welding.

[0047] Note that the inlet pipe 30 is the inlet of the heat exchange medium, and the outlet pipe 40 is the outlet of the heat exchange medium. When the heat exchange medium flows, it flows into the flow path cavity 101 through the inlet pipe 30 and flows out of the flow path cavity 101 through the outlet pipe 40. Providing the inlet pipe 30 and the outlet pipe 40 is advantageous for the connection and fixation between the flow path pipe 10 and the external cooling pipeline, and facilitates the inflow and outflow of the heat exchange medium.

[0048] Furthermore, in one embodiment, the inlet pipe 30 and the outlet pipe 40 are provided on opposite sides along the length direction of the branch pipe 11 of the vertical cold plate 100. In this way, interference is less likely to occur between the external cooling pipeline connected to the inlet pipe 30 and the external cooling pipeline connected to the outlet pipe 40, the arrangement of the pipelines is convenient, and the reliability of the device is improved.

[0049] In one embodiment, the material of the heat conduction plate 20 is heat-conductive silica gel.

[0050] The conventional silica gel material only has good elasticity but poor thermal conductivity. The thermal conductive silica gel provided in the present application is a material formed by filling a thermal conductive material into a silica gel matrix with the silica gel as the matrix, and has good thermal conductivity and elasticity. Therefore, the heat conduction plate 20 made of the thermal conductive silica gel also has good elasticity and heat conduction performance similarly. It not only satisfies the heat conduction needs of the heat conduction plate 20, but also effectively absorbs the tolerance between cells and the expansion force generated in the cycle by the heat conduction plate 20, and effectively improves the overall safety.

[0051] In the process of introducing silica gel to form the heat conduction plate 20, first, the thermal conductive silica gel is heated to a molten state, and then the molten thermal conductive silica gel is injected into the mold to which the flow channel tube 10 is fixed. As the thermal conductive silica gel cools and hardens, the thermal conductive silica gel adheres to the outer surface of the flow channel tube 10. Then, by cutting off the excess thermal conductive silica gel, the structure of the heat conduction plate 20 of the present application can be obtained. In this way, the forming of the heat conduction plate 20 becomes simple, and the processing speed of the heat conduction plate 20 can be effectively improved while reducing the cost. Here, the elasticity of the thermal conductive silica gel can be adjusted by changing the quantity of the injected material and the magnitude of the pressure.

[0052] Preferably, the flow channel tube 10 is provided at the central part along the thickness direction of the heat conduction plate 20 itself in the heat conduction plate 20, so as to further ensure the uniformity of heat conduction and the uniformity of the force received by the heat conduction plate 20 by the flow channel tube 10.

[0053] In one embodiment, as shown in FIG. 4, in order to improve the reliability of the connection between the heat conduction plate 20 and the flow path pipe 10, a support hole 201 is formed in the heat conduction plate 20. The support hole 201 is for inserting a support post in an injection mold to press the flow path pipe 10. In this way, when the heat conduction plate 20 is injection-molded using thermally conductive silica gel, the firm fixation between the flow path pipe 10 and the mold can be effectively ensured, and the generation of a gap between the heat conduction plate 20 and the flow path pipe 10 due to the shaking of the flow path pipe 10 can be avoided. Thereby, while effectively improving the combination accuracy of the heat conduction plate 20 and the flow path pipe 10, the qualified rate of the product is improved.

[0054] Specifically, the number of the support holes 201 is plural, and by providing the plural support holes 201 at intervals in the heat conduction plate 20, the fixing effect between the flow path pipe 10 and the mold can be further improved.

[0055] The present application further provides a battery pack including a plurality of cells and a side-standing cold plate 100 described in any one of the above embodiments. The plurality of cells are arranged at intervals along their own thickness directions, and the side-standing cooling plate 100 is sandwiched between two adjacent cells and connected to the two adjacent cells.

[0056] That is, along the thickness direction of the cell, the cells and the side-standing cold plate 100 in the battery pack are sequentially stacked and provided. In this way, the side-standing cold plate 100 can be simultaneously bonded to the large surfaces of the two cells to achieve cooling, while improving the heat exchange efficiency and ensuring the uniformity of heat exchange. And, since the side-standing cold plate 100 can absorb the tolerance of the cell by the elasticity of the heat conduction plate 20, the assembly of the cell becomes easy, the difficulty of assembling the cell is reduced, and when the cell expands during a long-term cycle to increase the thickness of the cell, the side-standing cold plate 100 can similarly absorb the expansion force by the externally flexible heat conduction plate 20, and avoid the leakage caused by the cell pressing the flow path pipe 10 located inside the side-standing cold plate 100 to damage the flow path pipe 10, and greatly improve the safety performance of the battery pack.

[0057] Between a conventional liquid cooling plate and a cell, they are often adhered by a thermally conductive structural adhesive. However, with this adhesion method, it is difficult to disassemble, and subsequent maintenance becomes difficult. There is a risk that the entire module or the entire battery pack may become waste due to a slight carelessness.

[0058] In one embodiment of the present application, the standing cooling plate 100 is adhered to the cell by a double-sided tape 200. In this way, the connection between the standing side plate 100 and the cell becomes simple, and the adhesion and fixation of both can be easily realized. And even when maintenance is required later, it is only necessary to remove the double-sided tape 200 provided between the standing cooling plate 100 and the cell, improving the convenience of disassembly.

[0059] The present application further provides a processing method for the standing cooling plate 100 for processing the standing cooling plate 100. The processing method of the standing cooling plate 100 is a step S1 of processing a flow path tube 10 having a flow path cavity 101 inside with a thermally conductive plastic; a step S2 of directly injection molding a heat conduction plate 20 on the outer surface of the flow path tube 10 using thermally conductive silica gel so that the heat conduction plate 20 wraps the outer surface of the flow path tube 10; a step S3 of welding an inlet tube 30 and an outlet tube 40 to both ends of the flow path tube 10.

[0060] Furthermore, the molding of the heat conduction plate 20 in step S2 is a step S21 of attaching the flow path tube 10 to an injection molding die and bringing a support post in the injection molding die into contact with the outer surface of the flow path tube 10; a step S22 of injecting a predetermined amount of molten thermally conductive silica gel into the injection molding die so that the thermally conductive silica gel wraps the outer surface of the flow path tube 10 and adjusting the pressure received by the thermally conductive silica gel by a pressure adjusting device; a step S23 of cutting off the excess thermally conductive silica gel after the curing of the thermally conductive silica gel is completed.

[0061] Each technical feature of the above embodiments can be arbitrarily combined. For the sake of brevity, not all combinations of the technical features in the above embodiments are described. However, these combinations of technical features should be considered to be included within the scope described in this specification as long as they do not conflict with each other.

[0062] The above embodiments merely show some embodiments of the present application and are described in detail, but it should not be understood that they limit the scope of the claims of the present invention. Those skilled in the art can make various modifications and improvements without departing from the gist of the present invention, and all of them are included in the protection scope of the present invention. Therefore, the patent protection scope of the present application should be considered with reference to the scope of the claims.

Description of Reference Numerals

[0063] 100: Side-standing cold plate, 10: Flow path pipe, 101: Flow path cavity, 11: Branch pipe, 12: Curved pipe, 20: Heat conduction plate, 201: Support hole, 30: Inlet pipe, 40: Outlet pipe, 200: Double-sided tape.

Claims

1. It is for performing heat exchange with the cell by being attached to a side surface along the thickness direction of the cell itself, including a flow path tube (10) and a heat conduction plate (20), the flow path tube (10) being a plastic heat conduction member, the heat conduction plate (20) being a flexible heat conduction member, and the heat conduction plate (20) being directly injection molded onto the outer surface of the flow path tube (10) so as to be able to cover the flow path tube (10), a flow path cavity (101) for introducing a heat exchange medium is opened in the flow path tube (10), and the heat conduction plate (20) is for being bonded to the cell so as to be able to receive heat transferred from the cell through the heat conduction plate (20) and the flow path tube (10), A side-standing cold plate characterized by the above.

2. The material of the flow path tube (10) is a heat conductive plastic, The flow path tube (10) is extrusion molded by the heat conductive plastic, The side-standing cold plate according to Claim 1, characterized by the above.

3. The flow path tube (10) includes branch pipes (11) and a curved pipe (12), The number of the branch pipes (11) is plural, The plural branch pipes (11) are arranged at intervals along the width direction of the side-standing cold plate, The curved pipe (12) is connected to the same-side ends of two adjacent branch pipes (11) and communicates the two branch pipes (11), The side-standing cold plate according to Claim 1, characterized by the above.

4. The branch pipe (11) and the curved pipe (12) are integrally bent and formed, The side-standing cold plate according to Claim 3, characterized by the above.

5. The branch pipe (11) and the curved pipe (12) have a separate structure, and the branch pipe (11) and the curved pipe (12) are fixed by welding, The side-standing cold plate according to Claim 3, characterized by the above.

6. The material of the heat conduction plate (20) is heat conductive silica gel, The side-standing cold plate according to Claim 1, characterized by the above.

7. Support holes (201) are opened in the heat conduction plate (20), The support holes (201) are for inserting support columns in an injection molding die to press the flow path tube (10), The side-standing cold plate according to Claim 1, characterized by the above.

8. Further including an inlet pipe (30) and an outlet pipe (40), The inlet pipe (30) and the outlet pipe (40) are respectively connected to both ends of the flow path pipe (10) and communicate with the flow path cavity (101). The vertical cold plate according to claim 1, characterized in that.

9. A plurality of cells; A vertical cold plate according to any one of claims 1 to 8, and includes. The plurality of cells are arranged at intervals along the thickness direction of the cells themselves. The vertical cold plate is sandwiched between two adjacent cells and connected to the two adjacent cells. A battery pack, characterized in that.

10. A method for processing a vertical cold plate for processing the vertical cold plate according to claim 1, comprising: Processing a flow path pipe (10) having a flow path cavity (101) inside with a thermally conductive plastic; Directly injection molding the heat conduction plate (20) using thermally conductive silica gel on the outer surface of the flow path pipe (10) so that the heat conduction plate (20) wraps the outer surface of the flow path pipe (10). A method for processing a vertical cold plate, characterized in that.

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