Heat exchange system and battery pack

Abstract

The application discloses a heat exchange system and a battery pack. The heat exchange system comprises a connecting pipe and a heat exchange plate joint which are connected and matched. The connecting pipe comprises an outer pipe and an inner pipe which are matched. The inner pipe is nested in the inner part of the outer pipe, and the inner pipe is a flexible pipe. A through hole is formed in the outer pipe. The through hole can communicate with the inner pipe. The through hole is located on the corresponding section of the inner pipe on the outer pipe and the heat exchange plate joint. In the assembling process of the connecting pipe and the heat exchange plate joint, the heat exchange plate joint extrudes the flexible inner pipe. Because the through hole is formed in the outer pipe, the flexible inner pipe can form a deformed protrusion through the through hole, so that the frictional resistance in the assembling process of the inner pipe of the connecting pipe and the heat exchange plate joint is reduced, and the assembling efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a heat exchange system and a battery pack. Background Technology

[0002] In existing technologies, heat exchange plates are typically installed on the bottom and sides of the battery module to exchange heat and cool the battery module. Since there are multiple battery modules, in order to ensure the heat exchange effect, multiple side heat exchange plates need to be distributed sequentially between adjacent battery modules, and connecting pipes are needed to connect the side heat exchange plates sequentially so that the heat exchange medium can flow between the heat exchange plates through the connecting pipes. However, the current assembly resistance between the connecting pipe and the heat exchange plate joint is relatively large, resulting in low assembly efficiency.

[0003] In summary, how to reduce assembly resistance and improve assembly efficiency during the connection process of connecting pipes is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a heat exchange system and battery pack that reduces assembly resistance during the connection of connecting pipes and improves assembly efficiency.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A heat exchange system includes a connecting pipe and a heat exchange plate joint that are connected and mated.

[0007] The connecting pipe includes an outer pipe and an inner pipe; the outer pipe is adapted to the shape of the inner pipe, and the inner pipe is nested inside the outer pipe; the inner pipe is a flexible pipe; a through hole is provided on the outer pipe, the through hole is connected to the inner pipe, and the through hole is located on the corresponding section of the outer pipe where the inner pipe and the heat exchange plate joint are assembled.

[0008] The heat exchange system provided in this application includes a connecting pipe and a heat exchange plate joint that are connected and fitted together. The connecting pipe includes an outer pipe and an inner pipe that are adapted to each other. The inner pipe is nested inside the outer pipe and is a flexible pipe. A through hole is provided on the outer pipe, which can connect to the inner pipe. The through hole is located on the corresponding section of the outer pipe where the inner pipe and the heat exchange plate joint are assembled. In this way, during the assembly process of the connecting pipe and the heat exchange plate joint, the heat exchange plate joint squeezes the flexible inner pipe. Because the outer pipe has a through hole, the flexible inner pipe can form a deformable protrusion through the through hole, which reduces the frictional resistance during the assembly process of the inner pipe of the connecting pipe and the heat exchange plate joint and improves the assembly efficiency. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the connecting pipe provided in an embodiment of this application;

[0011] Figure 2 This is a structural schematic diagram of the connecting pipe provided in an embodiment of this application from another perspective;

[0012] Figure 3 A cross-sectional view of the connecting pipe provided in an embodiment of this application;

[0013] Figure 4 This is a schematic diagram of the connection between the connecting pipe and the heat exchange plate joint provided in an embodiment of this application;

[0014] Figure 5 for Figure 4 A cross-sectional view of the schematic diagram of the connecting pipe and heat exchanger plate joint shown;

[0015] Figure 6 This is a schematic diagram of a heat exchange system provided in an embodiment of this application.

[0016] Explanation of reference numerals in the attached figures:

[0017] 100-Outer tube, 110-Through hole, 120-Outer tube body, 130-First flared mouth;

[0018] 200-Inner pipe, 210-Exhaust section, 220-Inner pipe body, 230-Second bell mouth;

[0019] 300 - Heat exchanger plate connector; 310 - Connector body;

[0020] 400 - Heat exchange plate. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The terminology used in the following embodiments is for the purpose of describing specific embodiments only and is not intended to be a limitation of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise. It should also be understood that in the embodiments of this application, "one or more" refers to one, two, or more; "and / or" describes the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0023] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0024] The "multiple" mentioned in the embodiments of this application refers to two or more. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0025] like Figure 1As shown, the heat exchange system provided in this application embodiment includes a connecting pipe and a heat exchange plate joint 300 that are connected and fitted together. The connecting pipe structure includes an outer pipe 100 and an inner pipe 200, wherein the outer pipe 100 and the inner pipe 200 are adapted in shape, and the inner pipe 200 is nested inside the outer pipe 100. The inner pipe 200 is a flexible pipe, and a through hole 110 is provided on the outer pipe 100. The through hole 110 can connect the inner pipe 200, and the through hole 110 is located on the corresponding section of the inner pipe 200 on the outer pipe 100 where it is assembled with the heat exchange plate joint 300. In this way, during the assembly process of the connecting pipe and the heat exchange plate joint 300, the heat exchange plate joint 300 squeezes the flexible inner pipe 200. Since the outer pipe 100 has a through hole 110, the flexible inner pipe 200 can form a deformable protrusion through the through hole 110. The deformation of the inner pipe 200 reduces the frictional resistance during the assembly process of the connecting pipe and the heat exchange plate joint 300, thereby improving the assembly efficiency.

[0026] like Figures 2-3 As shown, the outer tube 100 includes an outer tube body 120 and first flared openings 130 disposed at both ends of the outer tube body 120. The first flared openings 130 guide the connection to the heat exchange plate joint 300, and the through hole 110 is opened on the first flared opening 130. The through hole 110 can continuously provide deformation space for the inner tube 200 during the connection process between the connecting tube and the heat exchange plate joint 300, so as to further improve the assembly efficiency.

[0027] In some embodiments, such as Figures 1-3 As shown, at least one through hole 110 is provided on the first flared opening 130 at one end of the outer tube 100, and the deformable space of the inner tube 200 is provided through the through hole 110.

[0028] In some other embodiments, at least two through holes 110 are provided on the first flared opening 130 at one end of the outer tube 100, and the at least two through holes 110 are distributed sequentially along the circumference of the first flared opening 130, so that the at least two through holes 110 can provide more deformable space for the inner tube 200, further reducing frictional resistance during assembly and improving assembly efficiency.

[0029] For example, two, three, four or more through holes 110 may be distributed sequentially along the circumference of the first flared opening 130 to further reduce the frictional resistance during the assembly process. The selection can be made according to actual needs, and this application embodiment does not limit this.

[0030] To further reduce frictional resistance during assembly, such as Figure 3As shown, the inner tube 200 has an exhaust section 210 corresponding to the through hole 110. The exhaust section 210 allows the air bubbles generated during the assembly process of the heat exchange plate joint 300 and the inner tube 200 to have a movable space, so as to further reduce the frictional resistance during the assembly process.

[0031] In some embodiments, the exhaust portion 210 is a recessed groove, which is recessed from the outer tube 100 toward the inner tube 200, or from the inner tube 200 toward the outer tube 100, so that the exhaust portion 210 forms a thinned area. The thickness of the thinned area is smaller than the thickness of other areas of the inner tube 200, so that the air bubbles generated during the assembly and extrusion process of the inner tube 200 and the heat exchange plate joint 300 can move more towards the thinned exhaust portion 210. The exhaust portion 210 corresponds to the through hole 110, so that the air bubbles can push up the exhaust portion 210 to form a protrusion protruding toward the through hole 110, thereby reducing the frictional resistance during the assembly process and improving the assembly efficiency.

[0032] In this application, when the exhaust section 210 is a sink, the depth of the sink is greater than or equal to 0.3 mm. For example, the depth of the sink can be 0.3 mm, 0.4 mm, 0.5 mm, etc., so that the sink has a certain depth to ensure the exhaust effect of the exhaust section 210 and avoid ineffective exhaust due to the sink being too small.

[0033] In some other embodiments, such as Figure 3 As shown, the exhaust section 210 is a through hole, and the through hole is connected to the through hole 110, so that the air bubbles generated by friction and extrusion during the assembly of the inner tube 200 and the heat exchange plate joint 300 can be discharged through the exhaust section 210 and the through hole 110 in sequence, further reducing the frictional resistance during the assembly process.

[0034] In this application, the area ratio of the exhaust section 210 to the through hole 110 is 0.8-1.5. For example, the area ratio of the exhaust section 210 to the through hole 110 can be any one of 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5 or any value between the two. If the ratio is too large, it will affect the sealing effect between the inner tube 200 and the heat exchange plate joint 300. If the ratio is too small, it will affect the smoothness of exhaust during installation. By setting the area ratio of the exhaust section 210 to the through hole 110 to 0.8-1.5, the sealing connection between the connecting pipe and the heat exchange plate joint 300 is ensured, while the exhaust effect during the installation of the connecting pipe and the heat exchange plate joint 300 is also ensured.

[0035] In this application, such as Figure 3As shown, the inner tube 200 includes an inner tube body 220 and second flared openings 230 disposed at both ends of the inner tube body 220. The second flared openings 230 guide and connect with the heat exchange plate joint 300, and the exhaust part 210 is located on the second flared openings 230, so that the exhaust part 210 can continuously provide space for bubble movement during the connection process between the connecting tube and the heat exchange plate joint 300, thereby further improving the assembly efficiency.

[0036] like Figures 4-5 As shown, the heat exchange plate joint 300 includes a joint body 310. The heat exchange plate joint 300 is inserted into the connecting pipe through the joint body 310. The joint body 310 includes a tapered section. The large end of the tapered section abuts and seals against the inner side of the inner pipe 200 to ensure a sealed fit between the heat exchange plate joint 300 and the connecting pipe.

[0037] In this application, the number of exhaust portions 210 corresponds to the number of through holes 110, and the exhaust portions 210 can be at least one or at least two.

[0038] At least two exhaust sections 210 are distributed sequentially along the circumference of the second flared opening 230, and the exhaust sections 210 correspond one-to-one with the through holes 110, so that the air bubbles generated during the assembly process can move through the exhaust sections 210 and the through holes 110, thereby reducing frictional resistance.

[0039] In practice, the inner tube 200 is usually formed by injection molding through an injection chamber formed by the outer tube 100 and the mold. Therefore, the outer tube 100 is usually provided with an injection port to form the inner tube 200 by injection molding. In this application, the injection hole can be directly used as the through hole 110 to reduce the number of processes and reduce costs.

[0040] In this application, the through hole 110 is a stamped hole, which can be formed by stamping so that the venting part 210 can be formed simultaneously during the stamping process. The venting part 210 can be formed into a groove or through hole by controlling the stamping stroke. Through stamping, the through hole 110 and the venting part 210 are formed simultaneously and correspond one-to-one, so as to reduce the manufacturing process and improve efficiency.

[0041] In some embodiments, the through hole 110 can be a round hole or a square hole, which can be selected according to the actual situation. This application embodiment does not limit this.

[0042] In some embodiments, the exhaust portion 210 can be circular or square, so that the shape of the exhaust portion 210 is adapted to the through hole 110. The choice can be made according to the actual situation, and this application embodiment does not limit this.

[0043] In this application, the inner tube 200 can be a type of tube with a certain degree of flexibility, such as a rubber tube, a plastic tube, or a silicone tube. The flexible inner tube 200 has the functions of being deformable, wear-resistant, and compression-resistant, thereby improving the connection strength and sealing effect between the connecting tube and the heat exchange plate joint 300.

[0044] In this application, the outer tube 100 is a plastic tube, and the hardness of the outer tube 100 is greater than that of the inner tube 200, so as to provide good pressure protection through the outer tube 100 and ensure the reliability of the entire connecting pipe during use.

[0045] The heat exchange system provided in this application embodiment, by opening a through hole 110 on the outer tube 100 and providing an exhaust part 210 corresponding to the through hole 110 on the inner tube 200, allows the air bubbles generated by friction and extrusion during the assembly of the connecting pipe and the heat exchange plate joint 300 to move toward the exhaust part 210 and the through hole 110, thereby reducing the frictional resistance during the assembly process and improving the assembly efficiency.

[0046] This application also provides a battery pack that includes the heat exchange system described in the above embodiments.

[0047] Since the heat exchange system described above has the aforementioned technical effects, and the battery pack includes the aforementioned heat exchange system, the battery pack also has the corresponding technical effects, which will not be elaborated here.

[0048] The battery pack provided in this embodiment also includes a housing, which is divided into an independent battery compartment and an electrical compartment by a partition beam. The battery compartment contains a plurality of batteries. Figure 6 As shown, a heat exchange plate 400 is provided between two opposite surfaces of the battery. A water inlet is provided at the end of the heat exchange plate 400, and the water inlet is connected to the heat exchange plate joint 300. Adjacent heat exchange plates 400 are connected to adjacent heat exchange plate joints 300 through connecting pipes, so that the heat exchange medium can be sequentially transferred to each heat exchange plate 400 through the connecting pipes to ensure the heat exchange effect of the battery.

[0049] It should be noted that the battery pack enclosure refers to a closed or semi-closed structure made of materials such as metal and plastic. It is the physical carrier of the battery pack, and its design and manufacturing must meet the safety, reliability, and functionality requirements of the battery pack in different usage scenarios.

[0050] The enclosure provides installation space for the battery pack, battery management system (BMS), heat exchange system, electrical connection components, etc., and through reasonable structural design, it fixes these components in the enclosure to ensure that they maintain a relatively stable position during battery pack operation, and avoid damage to components or loosening of connections due to vibration, impact or other factors.

[0051] It should be noted that the partition beam is fixedly connected to the side wall of the enclosure. The partition beam divides the internal space of the enclosure into at least two sub-spaces: the battery compartment and the electrical compartment. The electrical compartment is used to house electrical components, which are electronic components used to electrically connect with individual battery cells to cooperate with the operation of the battery cells, including but not limited to battery management units, relays, fuses, etc. The battery compartment holds multiple batteries.

[0052] It should be noted that the heat exchange plate 400 can be used as a component to regulate the battery temperature.

[0053] (1) The heat exchange plate 400 is provided with a heat exchange channel inside. The heat exchange channel is used to circulate the heat exchange medium. The heat exchange medium can be gas (air), liquid (such as water, alcohol, refrigerant, oil, etc.) or solid (such as thermal conductive adhesive, thermal conductive solder paste, etc.). The heat exchange channel has an inlet and an outlet for the heat exchange medium. The heat exchange medium can enter the heat exchange channel through the inlet, and after heat exchange with the battery cell, it is discharged from the outlet to realize the heat exchange of the battery cell.

[0054] (2) The heat exchange plate 400 can exchange heat with the battery cell. The heat exchange plate 400 can be made of materials with high thermal conductivity such as copper; or, the heat exchange plate 400 is equipped with a heat pipe, which can quickly transfer heat through the principle of heat convection; or, the heat exchange plate 400 is equipped with a channel, which connects to the heating device or cooling device, and a liquid medium flows in the channel, through which efficient heat exchange can be carried out.

[0055] The above description of the embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat exchange system, characterized in that, This includes the connecting pipes and heat exchanger plate joints that make up the connection: The connecting pipe includes an outer pipe and an inner pipe; The outer tube is adapted to the shape of the inner tube, and the inner tube is nested inside the outer tube; The inner tube is a flexible tube; The outer tube has a through hole that connects to the inner tube, and the through hole is located on the outer tube at the corresponding section where the inner tube and the heat exchange plate joint are assembled.

2. The heat exchange system according to claim 1, characterized in that, The outer tube includes an outer tube body and first flared openings at both ends of the outer tube body, with the through hole opened at the first flared opening.

3. The heat exchange system according to claim 2, characterized in that, At least one through hole is provided on the first flared opening at one end of the outer tube.

4. The heat exchange system according to claim 2, characterized in that, At least two through holes are provided on the first flared opening at one end of the outer tube, and the at least two through holes are distributed sequentially along the circumference of the first flared opening.

5. The heat exchange system according to claim 2, characterized in that, The inner tube has an exhaust section corresponding to the through hole.

6. The heat exchange system according to claim 5, characterized in that, The exhaust section is a settling tank; The settling trough is recessed from the outer tube to the inner tube, or the settling trough is recessed from the inner tube to the outer tube.

7. The heat exchange system according to claim 6, characterized in that, The depth of the settling tank is greater than or equal to 0.3 mm.

8. The heat exchange system according to claim 5, characterized in that, The exhaust section is a through hole, and the through hole is connected to the through hole.

9. The heat exchange system according to any one of claims 5-8, characterized in that, The ratio of the area of ​​the exhaust section to the area of ​​the through hole is 0.8-1.

5.

10. The heat exchange system according to claim 1, characterized in that, The heat exchange plate joint includes a joint body, and the heat exchange plate joint is inserted into the connecting pipe through the joint body; The connector body includes a tapered section, the large end of which abuts and seals against the inner tube.

11. The heat exchange system according to claim 5, characterized in that, The inner tube includes an inner tube body and second flared openings located at both ends of the inner tube body, with the exhaust section located at the second flared opening.

12. The heat exchange system according to claim 11, characterized in that, There are at least two exhaust sections, which are distributed sequentially along the circumference of the second flared opening, and each exhaust section corresponds to one of the through holes.

13. The heat exchange system according to claim 1, characterized in that, The through hole is an injection molding hole used to form the inner tube by injection molding; or, the through hole is a stamping hole.

14. The heat exchange system according to claim 1, characterized in that, The through hole can be round or square.

15. The heat exchange system according to claim 5, characterized in that, The exhaust section is circular or square.

16. The heat exchange system according to claim 1, characterized in that, The outer tube is a plastic tube, and the hardness of the outer tube is greater than that of the inner tube.

17. A battery pack, characterized in that, Includes the heat exchange system as described in any one of claims 1-16; The battery pack also includes a housing, which is divided into an independent battery compartment and an electrical compartment by a partition beam. The battery compartment contains a number of batteries. A heat exchange plate is provided between two opposite sides of the battery. A water inlet is provided at the end of the heat exchange plate. The water inlet is connected to the heat exchange plate joint. Adjacent heat exchange plates are connected to adjacent heat exchange plate joints through connecting pipes.

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