Heat exchange plate structure, battery pack structure and electric device

Abstract

The utility model provides a kind of heat exchange plate structure, battery package structure and electric device, wherein, heat exchange plate structure, comprising: first plate body, with inlet; Second plate body is set up with first plate body superposition, second plate body and first plate body between being provided with second main flow channel, first main flow channel and branch channel, first main flow channel is communicated with inlet, second main flow channel is communicated with first main flow channel by branch channel, first main road groove is provided on second plate body;Resistance plate, expansion groove is provided on resistance plate, resistance plate is connected with second plate body, to make expansion groove and first main road groove intercommunication and enclose second main flow channel;Wherein, the cross-sectional area S1 of first main road groove, the cross-sectional area S2 of expansion groove and the total cross-sectional area S of branch channel meet: 0.4≤(S1+S2) / S≤1.0.The technical scheme of the application effectively solves the problem that the heat exchange process of the heat exchange plate in the related art is insufficient, which makes the heat exchange efficiency of the heat exchange plate lower.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a heat exchange plate structure, a battery pack structure, and an electrical device. Background Technology

[0002] A heat exchange plate is a heat exchange component widely used in various fields, including but not limited to thermal management systems for electric vehicle battery packs, cooling systems for data centers, and refrigeration cycles for household appliances. In these applications, the function of the heat exchange plate is to transfer heat through the flow of fluids or gases, achieving cooling or heating effects, ensuring stable equipment operation, and extending the service life of the equipment.

[0003] The heat exchange plate in the relevant technology is equipped with flow channels, in which fluid flows to exchange the heat absorbed by the fluid with the heat of the equipment, thereby maintaining the equipment within an ideal temperature range and avoiding performance degradation or safety hazards caused by overheating or overcooling.

[0004] However, in the heat exchange plates of related technologies, there are local flow resistances that are too high in the flow channels, resulting in insufficient local heat exchange and low heat exchange efficiency of the heat exchange plate. Utility Model Content

[0005] The main objective of this invention is to provide a heat exchange plate structure, a battery pack structure, and an electrical device to solve the problem of insufficient local heat exchange in the heat exchange plate in related technologies, which results in low heat exchange efficiency.

[0006] To achieve the above objectives, according to one aspect of the present invention, a heat exchange plate structure is provided, comprising: a first plate having a liquid inlet; a second plate stacked on top of the first plate, wherein a second main channel, a first main channel, and a branch channel are provided between the second plate and the first plate, the first main channel being connected to the liquid inlet, the second main channel being connected to the first main channel through the branch channel, and a first main channel groove being provided on the second plate; and a drag-reducing plate having an expansion groove, the drag-reducing plate being connected to the second plate so that the expansion groove is connected to the first main channel groove and forms the second main channel; wherein the cross-sectional area S1 of the first main channel groove, the cross-sectional area S2 of the expansion groove, and the total cross-sectional area S of the branch channel satisfy the following relationship: 0.4≤(S1+S2) / S≤1.0.

[0007] According to another aspect of the present invention, a battery pack structure is provided, including a heat exchange plate structure and a battery body, wherein the heat exchange plate structure is the heat exchange plate structure described above.

[0008] According to another aspect of the present invention, an electrical device is provided, including a battery pack structure, wherein the battery pack structure is the battery pack structure described above.

[0009] By applying the above technical solution, and by setting up a second main channel, a first main channel, and branch channels, the uniformity of fluid distribution to different areas of the heat exchange plate can be improved, thereby increasing the overall heat exchange efficiency. Furthermore, as the flow rate of the second main channel increases when the fluid in the branch channels enters it, the cross-sectional area of ​​the second main channel can be effectively increased by connecting the expansion groove on the drag-reducing plate to the first main channel groove on the second plate. This reduces local flow obstruction, ensuring that the flow resistance in the second main channel remains within a reasonable range even when the flow rate increases. This prevents a sharp increase in flow resistance within the second main channel, resulting in more complete heat exchange at the second main channel and thus improving the heat exchange efficiency of the heat exchange plate. The cross-sectional area S1 of the first main channel, the cross-sectional area S2 of the expansion channel, and the total cross-sectional area S of the branch channels are limited to 0.4 ≤ (S1 + S2) / S ≤ 1.0. This ensures that the fluid in the second main channel can be evenly distributed into the expansion channel and the first main channel through the branch channels, thereby increasing the contact area and time between the fluid and the heat exchange plate structure, avoiding insufficient local heat exchange, improving heat exchange efficiency, ensuring the uniformity of the internal temperature of the equipment, extending the service life of the equipment, and improving safety. Therefore, the technical solution of this application effectively solves the problem of insufficient local heat exchange process in the heat exchange plate in related technologies, resulting in low heat exchange efficiency of the heat exchange plate. Attached Figure Description

[0010] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0011] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the heat exchanger plate structure according to the present invention is shown;

[0012] Figure 2 It shows Figure 1 A top view of the heat exchanger plate structure;

[0013] Figure 3 It shows Figure 2 A cross-sectional view of the heat exchanger plate structure at point AA;

[0014] Figure 4 It shows Figure 3 A magnified view of a portion of the heat exchanger plate structure at point C;

[0015] Figure 5 It shows Figure 2 A cross-sectional view of the heat exchanger plate structure at point BB;

[0016] Figure 6 It shows Figure 5 A magnified view of a portion of the heat exchanger plate structure at point D;

[0017] Figure 7 It shows Figure 1 A cross-sectional schematic diagram of the liquid inlet device with a heat exchanger plate structure;

[0018] Figure 8 It shows Figure 1 A schematic diagram showing the connection between the first main channel, the second main channel, and the branch channels of the heat exchanger plate structure.

[0019] The above figures include the following reference numerals:

[0020] 10. First plate; 11. Liquid inlet; 12. Connecting hole;

[0021] 20. Second plate; 21. First main road channel;

[0022] 30. Resistance reducing plate; 31. Expansion slot;

[0023] 41. First main channel; 42. Second main channel; 43. Tributary channel;

[0024] 50. Liquid inlet; 51. Liquid inlet body; 511. Liquid inlet channel; 512. Connecting channel; 513. Liquid outlet channel; 514. Fluid outlet; 52. Liquid inlet pipe; 521. Fluid inlet; 53. Connecting gap. Detailed Implementation

[0025] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0028] In this embodiment, as Figures 1 to 4 as well as Figure 8 As shown, the heat exchange plate structure includes: a first plate body 10, a second plate body 20, and a drag-reducing plate 30. The first plate body 10 has a liquid inlet 11. The second plate body 20 is stacked on top of the first plate body 10, and a first main channel 41 and a branch channel 43 are provided between the second plate body 20 and the first plate body 10. The first main channel 41 is connected to the liquid inlet 11, and a first main channel groove 21 is provided on the second plate body 20. An expansion groove 31 is provided on the drag-reducing plate 30, and the drag-reducing plate 30 is connected to the second plate body 20 so that the expansion groove 31 is connected to the first main channel groove 21 and forms a second main channel 42. The second main channel 42 is connected to the first main channel 41 through the branch channel 43. The cross-sectional area S1 of the first main channel groove 21, the cross-sectional area S2 of the expansion groove 31, and the total cross-sectional area S of the branch channel 43 satisfy the following relationship: 0.4≤(S1+S2) / S≤1.0.

[0029] In this way, by setting up the second main channel 42, the first main channel 41, and the branch channel 43, the uniformity of fluid distribution to different areas of the heat exchange plate can be improved, thereby increasing the overall efficiency of heat exchange. Furthermore, since the flow rate of the second main channel 42 increases when the fluid in the branch channel 43 enters the second main channel 42, the cross-sectional area of ​​the second main channel 42 can be effectively increased by connecting the expansion groove 31 on the drag-reducing plate 30 with the first main channel groove 21 on the second plate 20. This reduces local flow obstruction, ensuring that the flow resistance within the second main channel 42 remains within a reasonable range even when the flow rate increases. This avoids a sharp increase in flow resistance within the second main channel 42, resulting in more complete heat exchange at the second main channel 42 and thus improving the heat exchange efficiency of the heat exchange plate. The cross-sectional area S1 of the first main channel trough 21, the cross-sectional area S2 of the expansion channel 31, and the total cross-sectional area S of the branch channel 43 are limited to 0.4 ≤ (S1 + S2) / S ≤ 1.0. This ensures that the fluid in the second main channel 42 can be evenly distributed into the expansion channel 31 and the first main channel trough 21 through the branch channel 43, thereby increasing the contact area and time between the fluid and the heat exchange plate structure, avoiding insufficient local heat exchange, improving heat exchange efficiency, ensuring the consistency of the internal temperature of the equipment, extending the service life of the equipment, and improving safety. Therefore, the technical solution of this embodiment effectively solves the problem of insufficient local heat exchange process in the heat exchange plate in related technologies, resulting in low heat exchange efficiency of the heat exchange plate.

[0030] In this embodiment, the cross-sectional area S1 of the first main channel trough 21 satisfies: 20mm 2 ≤S1≤130mm 2 The cross-sectional area of ​​the expansion slot 31, S2, satisfies: 20mm. 2 ≤S2≤130mm 2 The total cross-sectional area S of branch channel 43 satisfies: 40mm 2 ≤S≤650mm 2 .

[0031] The above S1 can be 20mm 2 32mm 2 44mm 2 56mm 2 68mm 2 80mm 2 92mm 2 104mm 2 116mm 2 Or 130mm 2 .

[0032] The above S2 can be 20mm 2 32mm 2 44mm2 56mm 2 68mm 2 80mm 2 92mm 2 104mm 2 116mm 2 Or 130mm 2 .

[0033] The aforementioned S3 can be 40mm 2 80mm 2 120mm 2 160mm 2 200mm 2 240mm 2 280mm 2 320mm 2 360mm 2 400mm 2 440mm 2 480mm 2 520mm 2 560mm 2 600mm 2 640mm 2 Or 650mm 2 .

[0034] Preferably, (S1+S2) / S equals 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, or 1.0.

[0035] It should be noted that there are multiple branch channels 43, which are connected between the first main channel 41 and the second main channel 42. The total cross-sectional area S of the branch channels 43 refers to the sum of the cross-sectional areas of all branch channels 43 in a plane perpendicular to the extension direction of the multiple branch channels 43.

[0036] like Figures 1 to 4 As shown, the drag-reducing plate 30 is located on the side of the first plate 10 away from the second plate 20. The drag-reducing plate 30 is connected to the second plate 20 through the first plate 10. The first plate 10 is provided with a connecting hole 12, and the expansion groove 31 is connected to the first main channel groove 21 through the connecting hole 12. This facilitates the processing of the heat exchange plate structure. First, the first plate 10 and the second plate 20 are attached together to form the first main channel 41 and the branch channel 43. Then, the drag-reducing plate 30 is placed on the side of the first plate 10 away from the second plate 20 so that the drag-reducing plate 30 can be connected to the first plate 10 and connected through the connecting hole 12. This also reduces the splicing gaps between the first plate 10, the second plate 20, and the drag-reducing plate 30, thereby improving the reliability of the heat exchange plate structure.

[0037] In an embodiment not shown, the drag-reducing plate and the first plate are both directly attached to the second plate. The drag-reducing plate and the first plate are adjacent to each other on the second plate, and the edge of the drag-reducing plate is attached to and sealed with the edge of the first plate, so that the second main channel and the branch channel can be sealed.

[0038] Furthermore, the cross-sectional area B of the connecting hole 12 satisfies: 100 mm 2 ≤B≤800mm 2 The cross-sectional area B of the connecting hole 12 ensures smooth fluid flow between the expansion groove 31 and the first main channel groove 21, reduces the increase in fluid flow resistance, further improves the continuity and uniformity of fluid flow, and makes heat exchange more complete, thereby improving heat exchange efficiency.

[0039] Preferably, the cross-sectional area B of the connecting hole 12 is 100 mm. 2 Or 200mm 2 Or 300mm 2 Or 400mm 2 Or 500mm 2 Or 600mm 2 Or 700mm 2 Or 800mm 2 .

[0040] Furthermore, the depth C of the expansion groove 31 satisfies: 1.00mm ≤ C ≤ 5.00mm. The selection of the depth C of the expansion groove 31 ensures that the fluid maintains sufficient flowability for heat exchange while avoiding the negative impact of an excessively deep expansion groove 31 on the structural strength and processing cost of the material. An appropriate depth C of the expansion groove 31 optimizes the balance between heat transfer efficiency and structural strength.

[0041] Preferably, the depth C of the expansion slot 31 is 1.00mm, 2.00mm, 3.00mm, 4.00mm, or 5.00mm.

[0042] like Figures 5 to 7 As shown, the first plate 10 is provided with multiple liquid inlets 11 that communicate with the first main flow channel 41. The design of multiple liquid inlets 11 allows the fluid to enter the first main flow channel 41 from multiple locations, increasing the total liquid inlet area, realizing rapid fluid dispersion, reducing the initial flow resistance accumulation of the fluid entering the heat exchange plate structure, thereby reducing the overall flow resistance of the fluid within the heat exchange plate structure, allowing the fluid to reach other heat exchange areas more smoothly, improving the overall temperature regulation speed and efficiency of the heat exchange plate structure, and also reducing the energy consumption required for the fluid to flow within the heat exchange plate structure.

[0043] like Figures 1 to 7As shown, the heat exchanger plate structure also includes a liquid inlet 50 disposed on the first plate body 10. The liquid inlet 50 includes a liquid inlet body 51, and a plurality of liquid outlet channels 513 are disposed within the liquid inlet body 51. The second ends of the plurality of liquid outlet channels 513 penetrate through the surface of the liquid inlet body 51 and form a plurality of fluid outlets 514. Each fluid outlet 514 has a communication gap 53 between it and the surface of the first plate body 10 facing the liquid inlet body 51. The plurality of fluid outlets 514 are connected through the communication gap 53, and the plurality of liquid inlets 11 are connected to the communication gap 53. In this way, by setting the communication gap 53, the plurality of fluid outlets 514 can be connected, so that the fluid in the fluid outlets 514 can converge in the communication gap 53, avoiding the accumulation and uneven distribution of fluid at a single fluid outlet 514. This allows the fluid to enter the plurality of liquid inlets 11 evenly, ensuring that each liquid inlet 11 receives sufficient fluid supply, making the flow rate of the plurality of liquid inlets 11 more uniform, thereby further improving the consistency of heat exchange and temperature uniformity.

[0044] Specifically, a connecting groove is provided on the surface of the liquid inlet body 51 facing the first plate 10, and multiple fluid outlets 514 are provided on the bottom wall of the connecting groove. A connecting gap 53 is provided between the bottom wall of the connecting groove and the surface of the first plate 10 facing the liquid inlet body 51.

[0045] like Figures 5 to 7 As shown, the inlet device 50 also includes an inlet pipe 52 disposed on the inlet body 51. The inlet device 50 has a fluid inlet 521 communicating with a fluid outlet 514. The fluid inlet 521 is disposed at the end of the inlet pipe 52. The inlet body 51 is provided with a connecting channel 512, an inlet channel 511, and an outlet channel 513. The first end of the inlet channel 511 is connected to the inlet pipe 52, and the second end of the inlet channel 511 is connected to the connecting channel 512. There are multiple outlet channels 513, the first ends of which are all connected to the connecting channel 512, and the second ends of which penetrate the surface of the inlet body 51 and form multiple fluid outlets 514. The design of the connecting channel 512, the inlet channel 511, and the outlet channel 513 inside the inlet device 50 provides an orderly path for the flow of fluid and reduces the velocity loss of fluid during turning and distribution processes. Furthermore, by setting up the connecting channel 512, the liquid inlet channel 511 and multiple liquid outlet channels 513 can be connected, which simplifies the structure of the liquid inlet 50, makes the structure of the liquid inlet 50 more compact, and reduces the volume of the heat exchange plate structure.

[0046] In an embodiment not shown, the heat exchange plate structure further includes a liquid inlet disposed on the first plate. The liquid inlet has a fluid inlet and multiple fluid outlets communicating with the fluid inlet, with each fluid outlet corresponding to a different liquid inlet. This arrangement of the fluid inlet and multiple fluid outlets enables more accurate fluid distribution, ensuring sufficient fluid supply to each liquid inlet and resulting in more uniform flow rates across the multiple liquid inlets. This further improves the consistency of heat exchange and temperature uniformity.

[0047] like Figures 5 to 7 As shown, multiple liquid inlets 11 are spaced apart along the extension direction of the first main flow channel 41. This spaced arrangement of multiple liquid inlets 11 along the extension direction of the first main flow channel 41 ensures uniform distribution of fluid along this direction. Furthermore, this arrangement facilitates the processing and arrangement of the multiple liquid inlets 11, improving the spatial layout efficiency of the heat exchanger structure and reducing its volume.

[0048] Furthermore, the second main flow channel 42 is positioned opposite to the first main flow channel 41 at both ends of the branch flow channel 43. The opposite arrangement of the first main flow channel 41 and the second main flow channel 42, located at the ends of the branch flow channel 43, forms a fluid circulation system. By installing the drag-reducing plate 30, the cross-sectional area of ​​the main flow channel at the end furthest from the inlet 11 is increased, thereby reducing the flow resistance of the main flow channel at that end. This allows for smoother fluid flow within the heat exchanger plate structure, thus improving heat exchange efficiency.

[0049] This application also provides a battery pack structure, which includes a heat exchange plate structure and a battery body, wherein the heat exchange plate structure is the aforementioned heat exchange plate structure. Because the aforementioned heat exchange plate structure can solve the problem of insufficient local heat exchange in the heat exchange plate in related technologies, resulting in low heat exchange efficiency, the battery pack structure with this heat exchange plate structure can solve the same technical problem.

[0050] This application also provides an electrical device, which includes a battery pack structure, as described above. Because the aforementioned battery pack structure can solve the problem of insufficient local heat exchange in the heat exchange plate in related technologies, resulting in low heat exchange efficiency, the electrical device with this battery pack structure can solve the same technical problem.

[0051] In the description of this utility model, it should be understood that "multiple" means two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0052] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0053] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0054] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heat exchange plate structure, characterized in that, include: The first plate (10) has a liquid inlet (11); The second plate (20) is stacked on top of the first plate (10). A first main channel (41) and a branch channel (43) are provided between the second plate (20) and the first plate (10). The first main channel (41) is connected to the liquid inlet (11). A first main channel groove (21) is provided on the second plate (20). A drag-reducing plate (30) is provided with an expansion groove (31). The drag-reducing plate (30) is connected to the second plate body (20) so that the expansion groove (31) communicates with the first main channel groove (21) and forms a second main channel (42). The second main channel (42) is connected to the first main channel (41) through the branch channel (43). The relationship between the cross-sectional area S1 of the first main channel (21), the cross-sectional area S2 of the expansion channel (31), and the total cross-sectional area S of the branch channel (43) satisfies: 0.4≤(S1+S2) / S≤1.

0.

2. The heat exchange plate structure according to claim 1, characterized in that, The resistance-reducing plate (30) is located on the side of the first plate (10) away from the second plate (20). The resistance-reducing plate (30) is connected to the second plate (20) through the first plate (10). A connecting hole (12) is provided on the first plate (10). The expansion slot (31) is connected to the first main channel slot (21) through the connecting hole (12).

3. The heat exchange plate structure according to claim 2, characterized in that, The cross-sectional area of ​​the connecting hole (12) B satisfies: 100mm 2 ≤B≤800mm 2 .

4. The heat exchange plate structure according to claim 2, characterized in that, The depth C of the expansion slot (31) satisfies: 1.00mm≤C≤5.00mm.

5. The heat exchange plate structure according to any one of claims 1 to 4, characterized in that, The first plate (10) is provided with a plurality of liquid inlets (11) that communicate with the first main channel (41).

6. The heat exchange plate structure according to claim 5, characterized in that, The heat exchange plate structure also includes a liquid inlet (50) disposed on the first plate body (10). The liquid inlet (50) includes a liquid inlet body (51). The liquid inlet body (51) is provided with a plurality of liquid outlet channels (513). The second ends of the plurality of liquid outlet channels (513) penetrate through the surface of the liquid inlet body (51) and form a plurality of fluid outlets (514). Each fluid outlet (514) has a communication gap (53) between it and the surface of the first plate body (10) facing the liquid inlet body (51). The plurality of fluid outlets (514) are connected through the communication gap (53). The plurality of liquid inlets (11) are connected to the communication gap (53).

7. The heat exchange plate structure according to claim 6, characterized in that, The inlet device (50) further includes an inlet pipe (52) disposed on the inlet body (51). The inlet device (50) has a fluid inlet (521) communicating with the fluid outlet (514). The fluid inlet (521) is disposed at the end of the inlet pipe (52). The inlet body (51) is provided with a connecting channel (512), an inlet channel (511), and an outlet channel (513). The first end of the inlet channel (511) is communicating with the inlet pipe (52), and the second end of the inlet channel (511) is communicating with the connecting channel (512). There are multiple outlet channels (513). The first end of each of the multiple outlet channels (513) is connected to the connecting channel (512), and the second end of each of the multiple outlet channels (513) penetrates the surface of the inlet body (51) and forms multiple fluid outlets (514).

8. The heat exchange plate structure according to claim 5, characterized in that, The heat exchange plate structure also includes a liquid inlet (50) disposed on the first plate body (10). The liquid inlet (50) has a fluid inlet (521) and a plurality of fluid outlets (514) communicating with the fluid inlet (521). The plurality of fluid outlets (514) are connected to the plurality of liquid inlets (11) in a one-to-one correspondence.

9. The heat exchange plate structure according to claim 5, characterized in that, The plurality of liquid inlets (11) are spaced apart along the extension direction of the first main channel (41).

10. The heat exchange plate structure according to any one of claims 1 to 4, characterized in that, The second main channel (42) is disposed opposite to the first main channel (41) at both ends of the branch channel (43).

11. A battery pack structure, comprising a heat exchange plate structure and a battery body, characterized in that, The heat exchange plate structure is the heat exchange plate structure according to any one of claims 1 to 10.

12. An electrical device, comprising a battery pack structure, characterized in that, The battery pack structure is the battery pack structure as described in claim 11.

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