Heat exchange assembly and battery pack

Abstract

The utility model provides a heat exchange assembly and a battery pack, the heat exchange assembly comprises a liquid collecting pipe and a heat exchange plate arranged on one side of the liquid collecting pipe, and the water inlet end and the water outlet end of the heat exchange plate are both located on one side of the liquid collecting pipe. Wherein the liquid collecting pipe comprises a pipe body, a first partition plate and a second partition plate, the first partition plate is arranged in the pipe body and extends in the length direction of the pipe body, the first partition plate divides the pipe body into a first liquid collecting cavity and a second liquid collecting cavity, and the first liquid collecting cavity is used for being communicated with a cooling liquid supply part; the second partition plate is arranged in the second liquid collection cavity and at least divides the second liquid collection cavity into a first sub-containing cavity and a second sub-containing cavity, the first sub-containing cavity communicates with the first liquid collection cavity and is used for providing cooling liquid for the heat exchange plate, the second sub-containing cavity is used for recycling the cooling liquid subjected to heat exchange through the heat exchange plate, and the water inlet end of the heat exchange plate communicates with the first sub-containing cavity; the water outlet end of the heat exchange plate communicates with the second sub-containing cavity. Therefore, heat exchange does not occur when the cooling liquid enters or exits, and the heat exchange effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery manufacturing technology, and specifically relates to a heat exchange component and a battery pack. Background Technology

[0002] Due to the limited internal space of the battery, the close arrangement of the cells inside the battery inevitably leads to heat accumulation. Therefore, heat exchange components are needed to dissipate heat from the battery. The heat exchange components mainly include a liquid collecting pipe and a heat exchange plate. The liquid collecting pipe mainly includes an inlet chamber and an outlet chamber. The inlet end of the heat exchange plate is connected to the outlet chamber of the liquid collecting pipe, and the outlet end of the heat exchange plate is connected to the inlet chamber of the liquid collecting pipe.

[0003] Currently, when the inlet and outlet ends of the heat exchange plate are connected to the liquid collection pipe, the inlet end of the heat exchange plate needs to pass through the inlet chamber when it is connected to the outlet chamber of the liquid collection pipe, or the outlet end of the heat exchange plate needs to pass through the outlet chamber when it is connected to the inlet chamber of the liquid collection pipe. This causes the coolant to exchange heat during inlet or outlet, thereby reducing the heat exchange effect. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a heat exchange component that can effectively improve the heat exchange effect.

[0005] Another objective of this invention is to provide a battery pack.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A heat exchange assembly, characterized in that it includes a liquid collecting pipe and a heat exchange plate disposed on one side of the liquid collecting pipe, wherein the inlet and outlet ends of the heat exchange plate are both located on one side of the liquid collecting pipe.

[0008] The liquid collection tube includes:

[0009] tube body;

[0010] A first partition is disposed inside the tube and extends along the length of the tube. The first partition divides the tube into a first liquid collection chamber and a second liquid collection chamber. The first liquid collection chamber is used to communicate with the coolant supply unit.

[0011] A second partition is disposed within the second liquid collection chamber, dividing the second liquid collection chamber into at least a first sub-accommodating chamber and a second sub-accommodating chamber. The first sub-accommodating chamber is connected to the first liquid collection chamber and is used to provide coolant to the heat exchange plate. The second sub-accommodating chamber is used to recover the coolant after heat exchange by the heat exchange plate. The water inlet end of the heat exchange plate is connected to the first sub-accommodating chamber, and the water outlet end of the heat exchange plate is connected to the second sub-accommodating chamber.

[0012] As can be seen from the above technical solution, the coolant enters the first liquid collection chamber and the first sub-receiving chamber sequentially from the coolant supply section, enters the heat exchange plate through the first sub-receiving chamber, provides coolant to the heat exchange plate to reduce the temperature of the heat exchange plate, and the coolant flowing through the heat exchange plate finally flows back to the second sub-receiving chamber and then flows out from the second sub-receiving chamber.

[0013] The heat exchange assembly disclosed in this utility model, due to the arrangement of the first and second partitions, ensures that the liquid inlet end of the heat exchange plate does not pass through the second sub-receiving cavity when it is connected to the first sub-receiving cavity that provides coolant, and the liquid outlet end of the heat exchange plate does not pass through the first sub-receiving cavity when it is connected to the second sub-receiving cavity that recovers coolant. Therefore, when the coolant enters, it passes through the first liquid collection cavity and only flows through the first sub-receiving cavity, and when it exits, it only flows through the second sub-receiving cavity. Thus, no heat exchange occurs when the coolant enters or exits, thereby further improving the heat exchange effect. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the liquid collection tube disclosed in the embodiments of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the liquid collecting tube disclosed in the embodiment of this utility model;

[0017] Figure 3 This is a schematic diagram of the front structure of the first partition plate disclosed in the embodiment of this utility model;

[0018] Figure 4 This is a partial structural diagram of the front of the first partition plate disclosed in the embodiment of the present utility model;

[0019] Figure 5 This is a schematic diagram of the back side of the first partition disclosed in the embodiment of this utility model;

[0020] Figure 6 This is a schematic diagram of the back side of the first partition disclosed in an embodiment of the present utility model.

[0021] Figure 7 This is a schematic diagram of the structure of the second plate disclosed in the embodiment of this utility model;

[0022] Figure 8 This is a schematic diagram of the heat exchange component disclosed in the embodiments of this utility model;

[0023] Figure 9 This is a front view of the heat exchange component disclosed in the embodiments of this utility model;

[0024] Figure 10 This is a schematic diagram of the battery pack structure disclosed in the embodiments of this utility model;

[0025] Figure 11 This is a schematic diagram of the battery pack (without the casing) disclosed in the embodiment of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Heat collecting tube; 101. Tube body; 102. First partition; 1021. Partition body; 1021a. First protrusion; 1021b. Second protrusion; 1021c. Through hole; 1022. First transition section; 1023. Second transition section; 103. Second partition; 1031. First snap-fit ​​surface; 1032. Second snap-fit ​​surface; 1033. Fitting surface; 104. First liquid collecting cavity; 105. Second liquid collecting cavity; 1051. First sub-receiving cavity; 1052. Second sub-receiving cavity;

[0028] 200. Heat exchange plate;

[0029] 300. Coolant pipe;

[0030] 400. Box body;

[0031] 500, battery unit. Detailed Implementation

[0032] In view of this, the purpose of this utility model is to provide a heat exchange component that can effectively improve the heat exchange effect.

[0033] Another objective of this invention is to provide a battery pack.

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Please refer to... Figures 1 to 11 .

[0035] Please refer to Figures 1 to 3 , Figures 8-9 The heat exchange assembly disclosed in this embodiment of the present invention includes a liquid collecting pipe 100 and a heat exchange plate 200 disposed on one side of the liquid collecting pipe 100. The inlet and outlet ends of the heat exchange plate 200 are both located on one side of the liquid collecting pipe 100.

[0036] The liquid collecting pipe 100 includes a pipe body 101, a first partition 102, and a second partition 103. The first partition 102 is disposed inside the pipe body 101 and extends along the length of the pipe body 101, dividing the pipe body 101 into a first liquid collecting chamber 104 and a second liquid collecting chamber 105. The first liquid collecting chamber 104 is used to communicate with the coolant supply unit. The second partition 103 is disposed inside the second liquid collecting chamber 105, dividing the second liquid collecting chamber 105 into at least a first sub-receiving chamber 1051 and a second sub-receiving chamber 1052. The first sub-receiving chamber 1051 is connected to the first liquid collecting chamber 104 and is used to provide coolant to the heat exchange plate 200. The second sub-receiving chamber 1052 is used to recover the coolant after heat exchange by the heat exchange plate 200. The water inlet end of the heat exchange plate 200 is connected to the first sub-receiving chamber 1051, and the water outlet end of the heat exchange plate 200 is connected to the second sub-receiving chamber 1052.

[0037] Coolant enters the first collection chamber 104 and the first sub-receiving chamber 1051 sequentially from the coolant supply section. It then enters the heat exchange plate 200 through the first sub-receiving chamber 1051 to provide coolant for the heat exchange plate 200 and reduce its temperature. The coolant flowing through the heat exchange plate 200 finally flows back into the second sub-receiving chamber 1052 and then flows out from the second sub-receiving chamber 1052.

[0038] The heat exchange assembly disclosed in this embodiment of the present invention, due to the arrangement of the first partition 102 and the second partition 103, ensures that the liquid inlet end of the heat exchange plate 200 does not pass through the second sub-receiving cavity 1052 when it is connected to the first sub-receiving cavity 1051 that provides coolant, and the liquid outlet end of the heat exchange plate 200 does not pass through the first sub-receiving cavity 1051 when it is connected to the second sub-receiving cavity 1052 that recovers coolant. Therefore, when the coolant enters, it passes through the first liquid collection cavity 104 and only flows through the first sub-receiving cavity 1051, and when it exits, it only flows through the second sub-receiving cavity 1052. Thus, no heat exchange occurs when the coolant enters or exits, thereby further improving the heat exchange effect.

[0039] It should be noted that the coolant supply unit includes a coolant source and a coolant pipe 300, wherein one end of the coolant pipe 300 is connected to the coolant source and the other end is connected to the first liquid collection chamber 104.

[0040] As a further embodiment, please refer to Figure 3In this embodiment of the invention, there are multiple second partitions 103, which are arranged sequentially along the length of the tube 101. This arrangement divides the second liquid collection chamber 105 into multiple first sub-receiving chambers 1051 and second sub-receiving chambers 1052. Since the first sub-receiving chambers 1051 and 1052 are respectively used to provide coolant and to recover coolant after heat exchange through the heat exchange plate 200, the arrangement of multiple first sub-receiving chambers 1051 and second sub-receiving chambers 1052 can increase the heat dissipation area.

[0041] The first sub-accommodating cavity 1051 and the second sub-accommodating cavity 1052 are arranged alternately along the length of the tube body 101.

[0042] Specifically, the first sub-receiving cavity 1051 is denoted as A, and the second sub-receiving cavity 1052 is denoted as B. The arrangement of the first sub-receiving cavity 1051 and the second sub-receiving cavity 1052 is ABABAB (not shown in the figure). With this arrangement, a second partition 103 needs to be provided between each pair of adjacent first sub-receiving cavities 1051 and second sub-receiving cavities 1052 to separate the coolant that does not enter the heat exchange plate 200 from the coolant that has increased in temperature flowing out of the heat exchange plate 200 into different chambers.

[0043] To simplify the structure of the liquid collecting tube, the arrangement of the first sub-receiving cavity 1051 and the second sub-receiving cavity 1052 disclosed in this embodiment of the invention is ABBABB. Please refer to the following for details. Figure 1 It is understood that this configuration can eliminate the need for the second partition 103 located between the two second sub-cavities 1052. In other words, the two second sub-cavities 1052 are combined into one chamber. The coolant enters the heat inlet end of different heat exchange plates 200 from the first sub-cavities 1051 on both sides of the second sub-cavities 1052, and flows out from the liquid outlet end of the heat exchange plates 200 before entering the common chamber formed by the two second sub-cavities 1052.

[0044] Of course, the arrangement of the first sub-cavity 1051 and the second sub-cavity 1052 can also be BAABAA (not shown in the figure). Please refer to... Figure 1 ,Will Figure 1 The first sub-receiving cavity 1051 and the second sub-receiving cavity 1052 are interchanged. That is, the two first sub-receiving cavities 1051 are combined into one chamber. After the coolant enters the first sub-receiving cavity 1051, it enters the inlet end of the two heat exchange plates 200 respectively. After the coolant is heated by the heat exchange plates 200, it enters the second sub-receiving cavities 1052 located on both sides of the first sub-receiving cavity 1051 respectively. This structural arrangement can also achieve the effect of simplifying the liquid collection pipe structure.

[0045] As a further embodiment, the ratio of the length of the first sub-receiving cavity 1051 to the total length of the tube body 101 disclosed in this embodiment of the present invention ranges from 0.2 to 0.5, wherein the ratio of the length of the first sub-receiving cavity 1051 to the total length of the tube body 101 is specifically 0.25, 0.3, or 0.4; and the ratio of the length of the second sub-receiving cavity to the total length of the tube body 101 ranges from 0.5 to 0.8, wherein the ratio of the length of the second sub-receiving cavity to the total length of the tube body 101 is specifically 0.55, 0.6, or 0.7. With this configuration, the ratios of the lengths of the first sub-receiving cavity 1051 and the second sub-receiving cavity 1052 to the total length of the tube body 101 are substantially the same, thereby maintaining a balance between the inflow and outflow of coolant.

[0046] The first sub-receiving cavity 1051 is provided with a liquid outlet for communicating with the liquid inlet end of the heat exchange plate 200, and the second sub-receiving cavity 1052 is provided with a liquid inlet for communicating with the liquid outlet end of the heat exchange plate 200. Specifically, both the liquid inlet and the liquid outlet are located on the side wall of the tube body 101, with the liquid inlet end of the heat exchange plate 200 communicating with the liquid outlet, and the liquid outlet end of the heat exchange plate 200 communicating with the liquid inlet.

[0047] As a further embodiment, please refer to Figure 3 and Figure 5 It is understood that the distance between the second partition 103 and the liquid outlet disclosed in this embodiment of the present invention is 60mm to 120mm, specifically 70mm, 80mm, or 100mm. This arrangement avoids both excessively large distances leading to wasted space and excessively small distances causing excessive impact when the coolant flows back from the heat exchange plate 200 to the first sub-receiving cavity 1051, thus preventing sealing failure of the second partition 103.

[0048] The present invention does not limit the specific arrangement of the first partition 102. The first partition 102 can be arranged vertically inside the tube 101 or inclined inside the tube 101. Those skilled in the art can make the arrangement according to actual needs.

[0049] As a specific embodiment of this utility model, please refer to... Figures 2 to 4 It is understood that the first partition 102 disclosed in this embodiment of the present invention is inclinedly disposed inside the tube body 101, wherein the first partition 102 and the bottom wall of the tube body 101 form an angle, the angle of which ranges from 45° to 75°, specifically 50°, 60° or 70°. This arrangement not only facilitates the installation of the second partition 103, but also allows for adjustment of the relative sizes of the first liquid collecting chamber 104 and the second liquid collecting chamber 105, ensuring a balanced flow of coolant.

[0050] It should be noted that there are many ways to connect the first liquid collection chamber 104 and the first sub-accommodating chamber 1051. For example, the coolant in the first liquid collection chamber 104 can be introduced into the first sub-accommodating chamber 1051 through a connecting pipe, or it can be connected through a through hole. Of course, other connection methods can also be used. This utility model embodiment will not be listed one by one here.

[0051] For specific embodiments of this utility model, please refer to the following: Figure 5 and Figure 6 In this embodiment of the invention, a through hole 1021c is provided in the area corresponding to the first partition 102 and the first sub-accommodating cavity 1051, allowing coolant to enter the first sub-accommodating cavity 1051 from the first liquid collection cavity 104 through the through hole 1021c. This design not only simplifies the structure but also facilitates manufacturing.

[0052] Please refer to Figures 4 to 6 In this embodiment of the invention, the first partition 102 facing the first liquid collection chamber 104 is provided with a first protrusion 1021a and a second protrusion 1021b. The first protrusion 1021a corresponds to the first sub-receiving chamber 1051, and the second protrusion 1021b corresponds to the second sub-receiving chamber 1052. A through hole 1021c is provided on the first protrusion 1021a. The coolant in the first liquid collection chamber 104 enters the first sub-receiving chamber 1051 through the through hole 1021c and then enters the heat exchange plate 200. After passing through the heat exchange plate 200, the coolant is heated and flows back to the second sub-receiving chamber 1052. Then, it flows out of the second sub-receiving chamber 1052 through other connecting pipes to achieve coolant circulation. The arrangement of the first protrusion 1021a and the second protrusion 1021b can further improve the diversion effect.

[0053] It should be noted that the first partition 102 disclosed in this embodiment of the present invention includes a partition body 1021, a first transition portion 1022, and a second transition portion 1023. The first transition portion 1022 and the second transition portion 1023 are respectively disposed at both ends of the partition body 1021 perpendicular to the length direction of the tube body 101, and the first transition portion 1022 and the second transition portion 1023 are respectively connected to the inner wall of the tube body 101. Since both the first transition portion 1022 and the second transition portion 1023 have a certain width, this arrangement structure can not only improve the connection strength between the first partition 102 and the tube body 101, but also improve the convenience of connecting the first partition 102 and the tube body 101.

[0054] The first transition portion 1022 and the second transition portion 1023 may extend in the same direction or in opposite directions. In a specific embodiment of this utility model, the first transition portion 1022 and the second transition portion 1023 extend in opposite directions. This structural arrangement can further improve the ease of installation of the first partition 102 and the tube body 101.

[0055] As a further embodiment, please refer to Figure 7 The contact surfaces between the second partition 103 and the first partition 102 disclosed in this embodiment of the invention include a first engaging surface 1031, a second engaging surface 1032, and a fitting surface 1033. The first engaging surface 1031 engages with the first transition portion 1022, the second engaging surface 1032 engages with the second transition portion 1023, and the fitting surface 1033 fits against the partition body 1021. This configuration further enhances the connection strength between the second partition 103 and the first partition 102, preventing coolant exchange between the first sub-receiving cavity 1051 and the second sub-receiving cavity 1052 due to the difference in connection strength of the second partition 103.

[0056] Please refer to Figure 10 and Figure 11 This utility model embodiment also discloses a battery pack, including a housing 400, a heat exchange component and a battery unit 500. The heat exchange component and the battery unit are both disposed inside the housing 400. The heat exchange component is used to exchange heat for the battery unit 500. The heat exchange component is the heat exchange component disclosed in the above embodiment.

[0057] Since the battery pack uses the heat exchange component disclosed in the present invention, the battery pack also has the technical advantages of the heat exchange component disclosed in the present invention, and the present invention will not elaborate on these advantages further.

[0058] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0059] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0060] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. 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 the present invention. Therefore, the present invention 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 component, characterized in that, It includes a liquid collecting pipe and a heat exchange plate disposed on one side of the liquid collecting pipe, wherein the inlet and outlet of the heat exchange plate are both located on one side of the liquid collecting pipe; The liquid collection tube includes: tube body; A first partition is disposed inside the tube and extends along the length of the tube. The first partition divides the tube into a first liquid collection chamber and a second liquid collection chamber. The first liquid collection chamber is used to communicate with the coolant supply unit. A second partition is disposed within the second liquid collection chamber, dividing the second liquid collection chamber into at least a first sub-accommodating chamber and a second sub-accommodating chamber. The first sub-accommodating chamber is connected to the first liquid collection chamber and is used to provide coolant to the heat exchange plate. The second sub-accommodating chamber is used to recover the coolant after heat exchange by the heat exchange plate. The water inlet end of the heat exchange plate is connected to the first sub-accommodating chamber, and the water outlet end of the heat exchange plate is connected to the second sub-accommodating chamber.

2. The heat exchange assembly according to claim 1, characterized in that, There are multiple second partitions, which are arranged sequentially along the length of the tube.

3. The heat exchange assembly according to claim 2, characterized in that, The first and second sub-receiving cavities are arranged alternately along the length of the tube.

4. The heat exchange assembly according to claim 1, characterized in that, The ratio of the length of the first sub-accommodating cavity to the total length of the tube body ranges from 0.2 to 0.5, and the ratio of the length of the second sub-accommodating cavity to the total length of the tube body ranges from 0.5 to 0.

8.

5. The heat exchange assembly according to claim 1, characterized in that, The first sub-cavity is provided with a liquid outlet for communicating with the liquid inlet end of the heat exchange plate, and the second sub-cavity is provided with a liquid inlet for communicating with the liquid outlet end of the heat exchange plate.

6. The heat exchange assembly according to claim 5, characterized in that, The distance between the second baffle and the liquid outlet is 60mm to 120mm.

7. The heat exchange assembly according to claim 1, characterized in that, The first partition is inclinedly disposed inside the tube, and there is an angle between the first partition and the bottom wall of the tube, the angle being 45° to 75°.

8. The heat exchange assembly according to claim 1, characterized in that, The first partition plate has a through hole in the area corresponding to the first sub-receiving cavity, so that the coolant can enter the first sub-receiving cavity through the through hole.

9. The heat exchange assembly according to claim 8, characterized in that, The first partition plate has a first protrusion and a second protrusion on the side facing the first liquid collection cavity. The first protrusion is corresponding to the first sub-accommodating cavity, and the second protrusion is corresponding to the second sub-accommodating cavity. The through hole is provided on the first protrusion.

10. The heat exchange assembly according to claim 1, characterized in that, The first partition includes a partition body, a first transition portion and a second transition portion. The first transition portion and the second transition portion are respectively disposed at both ends of the partition body perpendicular to the length direction of the tube, and the first transition portion and the second transition portion are respectively connected to the inner wall of the tube.

11. The heat exchange assembly according to claim 10, characterized in that, The contact surface between the second partition and the first partition includes a first snap-fit ​​surface, a second snap-fit ​​surface, and a bonding surface. The first snap-fit ​​surface snaps into the first transition portion, the second snap-fit ​​surface snaps into the second transition portion, and the bonding surface is bonded to the partition body.

12. A battery pack, characterized in that, It includes a housing, a heat exchange component, and a battery unit. The heat exchange component and the battery unit are both disposed in the housing. The heat exchange component can exchange heat for the battery unit. The heat exchange component is the heat exchange component as described in claims 1-11.

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