Heat exchange assembly, battery pack and electric device

Abstract

The invention discloses a heat exchange assembly, a battery pack and a power utilization device, the heat exchange assembly comprises a first plate body, a jet flow plate and a second plate body, the first plate body, the jet flow plate and the second plate body are stacked, the jet flow plate is located between the first plate body and the second plate body, and the jet flow plate is located between the first plate body and the second plate body. The first plate body and the jet flow plate form a first flow channel, the second plate body and the jet flow plate form a second flow channel, the jet flow plate is provided with a plurality of jet flow holes, and the jet flow holes are communicated with the first flow channel and the second flow channel; the first flow channel communicates with the first flow channel opening, the second flow channel communicates with the second flow channel opening, and the first flow channel opening and the second flow channel opening are formed in the heat exchange assembly. Therefore, the heat exchange medium in the first flow channel can be jetted into the second flow channel through the jet flow hole, the flow resistance of the heat exchange assembly is reduced, the flow of the heat exchange medium is increased, and the heat dissipation effect of the heat exchange assembly is improved.

Description

Technical Field

[0001] The present invention relates to the field of batteries, and in particular to a heat exchange component, a battery pack and an electrical device. Background Art

[0002] As battery pack capacity increases and the number of cells increases, the amount of heat generated per unit time by a battery pack also increases, placing higher demands on cooling efficiency. Related technologies typically incorporate a curved cooling circuit on the liquid cooling plate to increase the heat exchange time between the coolant and the battery. However, this solution has limited heat exchange efficiency. Given the continuous improvement of battery cell voltage platforms and energy density, this approach struggles to meet this increasing demand, leaving room for improvement. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a heat exchange assembly in which a heat exchange medium in a first flow channel can be ejected into a second flow channel through an ejection hole, thereby reducing flow resistance, increasing the flow rate of the heat exchange medium, and achieving good heat dissipation effect.

[0004] According to an embodiment of the present invention, a heat exchange component includes: a first plate body, a jet plate and a second plate body, the first plate body, the jet plate and the second plate body are stacked, the jet plate is located between the first plate body and the second plate body, the first plate body and the jet plate form a first flow channel, the second plate body and the jet plate form a second flow channel, the jet plate is provided with a plurality of jet holes, the jet holes connect the first flow channel and the second flow channel; the first flow channel is connected to the first flow channel opening, the second flow channel is connected to the second flow channel opening, and the first flow channel opening and the second flow channel opening are arranged in the heat exchange component.

[0005] According to the heat exchange component of the embodiment of the present invention, the heat exchange medium of the first flow channel can be ejected into the second flow channel through the jet hole, which is beneficial to reducing the flow resistance of the heat exchange component, increasing the flow rate of the heat exchange medium, improving the heat dissipation effect of the heat exchange component, and making the heat exchange component have a higher degree of integration, thereby improving the practicality of the heat exchange component.

[0006] According to the heat exchange assembly of some embodiments of the present invention, the first flow channel includes a plurality of first branch flow channels spaced apart along the first direction.

[0007] According to the heat exchange assembly of some embodiments of the present invention, the first flow channel also includes a collecting flow channel, which is located on one side of the first branch flow channel along the second direction, and the collecting flow channel extends along the first direction and is connected with multiple first branch flow channels. The collecting flow channel is provided with the first flow channel opening, and the first direction intersects with the second direction.

[0008] According to the heat exchange assembly of some embodiments of the present invention, the width of the collecting channel decreases in the first direction.

[0009] According to the heat exchange assembly of some embodiments of the present invention, the second flow channel includes a plurality of second branch flow channels spaced apart along the first direction.

[0010] According to the heat exchange assembly of some embodiments of the present invention, the plurality of first branch flow channels and the plurality of second branch flow channels are opposite to each other and are respectively connected through the jet holes.

[0011] According to the heat exchange assembly of some embodiments of the present invention, the second flow channel also includes a converging flow channel, the converging flow channel is provided with the second flow channel opening, the converging flow channel is located on one side of the second branch flow channel along the third direction, the converging flow channel extends along the first direction and is connected with multiple second branch flow channels, and the third direction intersects with the first direction.

[0012] According to the heat exchange assembly of some embodiments of the present invention, the width of the converging flow channel increases in the first direction.

[0013] According to the heat exchange assembly of some embodiments of the present invention, the thickness of the jet plate is smaller than the thickness of the first plate body and the thickness of the second plate body; the thickness of the first plate body and the second plate body are different.

[0014] According to some embodiments of the heat exchange assembly of the present invention, the thickness W1 of the first plate body is 1mm~1.4mm, the thickness W2 of the second plate body is 3.5mm~4.5mm, and the thickness W3 of the jet plate is 0.6mm~0.8mm; at least a portion of the jet holes are configured as circular holes, and the diameter of the circular holes is ≤2mm; or at least a portion of the jet holes are configured as rectangular holes, and the length of the rectangular holes is ≤6mm and the width is ≤1mm.

[0015] According to some embodiments of the heat exchange assembly of the present invention, the first flow channel opening and the second flow channel opening are both located on the first plate body, a connecting hole is provided on the jet plate, and the second flow channel opening is connected to the second flow channel through the connecting hole.

[0016] The present invention also provides a battery pack.

[0017] A battery according to an embodiment of the present invention includes: a battery cell and a heat exchange assembly according to any one of the above embodiments, wherein the heat exchange assembly exchanges heat with the battery cell.

[0018] The present invention further provides an electrical device.

[0019] An electric device according to an embodiment of the present invention includes: a battery pack according to any of the above embodiments.

[0020] The advantages of the battery pack, the electrical device and the heat exchange assembly compared to the prior art are the same and will not be described in detail here.

[0021] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0023] Figure 1 is a schematic diagram of a heat exchange assembly according to an embodiment of the present invention;

[0024] Figure 2 is an exploded view of a heat exchange assembly according to an embodiment of the present invention;

[0025] Figure 3 is a schematic diagram of a first plate according to an embodiment of the present invention;

[0026] Figure 4 is a schematic diagram of a second plate according to an embodiment of the present invention;

[0027] Figure 5 is a schematic diagram of a jet plate according to an embodiment of the present invention.

[0028] Reference numerals:

[0029] Heat exchange component 100,

[0030] The first plate 1, the first flow channel 11, the first branch flow channel 111, the collecting flow channel 112, the first guide section 1121, the second guide section 1122, the third guide section 1123, the first side wall 112a, the second side wall 112b,

[0031] First flow channel opening 12, first partition 13, second partition 14, second flow channel opening 15,

[0032] The jet plate 2 , the jet hole 21 , the communication hole 22 , the second plate body 3 , the second flow channel 31 , the second branch flow channel 311 , the converging flow channel 312 , and the second partition 32 . DETAILED DESCRIPTION

[0033] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0034] Hereinafter, a heat exchange assembly 100 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0035] like Figure 1-Figure 5 As shown, the heat exchange component 100 according to an embodiment of the present invention includes: a first plate body 1, a jet plate 2 and a second plate body 3, the first plate body 1, the jet plate 2 and the second plate body 3 are stacked, the jet plate 2 is located between the first plate body 1 and the second plate body 3, the first plate body 1 and the jet plate 2 form a first flow channel 11, the second plate body 3 and the jet plate 2 form a second flow channel 31, the jet plate 2 is provided with a plurality of jet holes 21, the jet holes 21 connect the first flow channel 11 and the second flow channel 31, the first flow channel 11 is connected to the first flow channel port 12, the second flow channel 31 is connected to the second flow channel port 15, and the first flow channel port 12 and the second flow channel port 15 are arranged in the heat exchange component 100.

[0036] As a result, the flow resistance of the heat exchange assembly 100 can be reduced, the flow rate of the heat exchange medium can be increased, the heat dissipation effect of the heat exchange assembly 100 can be improved, and the integration of the heat exchange assembly 100 can be improved.

[0037] For example, refer to Figure 1-Figure 5 As shown, the battery pack includes a heat exchange assembly 100 and a battery cell. The heat exchange assembly 100 is constructed in a plate shape and is suitable for being attached to the outside of the battery cell to dissipate heat from the battery cell. The heat exchange assembly 100 includes a first plate 1, a jet plate 2, and a second plate 3. The first plate 1, the jet plate 2, and the second plate 3 are constructed to have the same shape. The first plate 1, the jet plate 2, and the second plate 3 are arranged in a thickness direction (i.e., Figure 2 The first plate body 1 and the second plate body 3 are stacked and connected (in the up and down direction), such as by integral brazing, and one of the first plate body 1 and the second plate body 3 is used to fit with the side wall of the battery cell.

[0038] The jet plate 2 is located between the first plate body 1 and the second plate body 3. A first flow channel 11 is defined between the first plate body 1 and the sidewall of the jet plate 2. A second flow channel 31 is defined between the second plate body 3 and the jet plate 2. At least a portion of the second flow channel 31 overlaps with the first flow channel 11 along the thickness direction of the jet plate 2. The jet plate 2 is provided with a plurality of jet holes 21. The jet holes 21 are located in the region where the first flow channel 11 and the second flow channel 31 overlap. The plurality of jet holes 21 can be evenly or unevenly distributed. The jet holes 21 penetrate the jet plate 2 along the thickness direction to connect the first flow channel 11 with the second flow channel 31.

[0039] The heat exchange assembly 100 may be provided with a first flow channel opening 12 and a second flow channel opening 15, such as a first flow channel opening 12 and a second flow channel opening 15 on the first plate 1; or a first flow channel opening 12 and a second flow channel opening 15 on the second plate 3; or a first flow channel opening 12 on the first plate 1 and a second flow channel opening 15 on the second plate 3, and this application does not limit this. The first flow channel 11 is connected to the external pipeline through the first flow channel opening 12, and the second flow channel 31 is connected to the external pipeline through the second flow channel opening 15.

[0040] Specifically, the second plate 3 can be arranged to fit the battery cell. When the heat exchange component 100 starts working, the heat exchange medium in the external pipeline can flow into the first flow channel 11 from the first flow channel opening 12, and then the heat exchange medium can flow along the first flow channel 11 and be ejected into the second flow channel 31 through the jet hole 21. The heat exchange medium flowing into the second flow channel 31 can flow along the second flow channel 31 and exchange heat with the battery cell. After the heat exchange is completed, the heat exchange medium can flow out to the external pipeline through the second flow channel opening 15 to realize the circulation of the heat exchange medium.

[0041] It can be understood that by providing a jet hole 21 on the jet plate 2, the heat exchange medium in the first flow channel 11 can be ejected into the second flow channel 31 through the jet hole 21, which can reduce the flow resistance of the heat exchange component 100 and increase the flow rate of the heat exchange medium. Moreover, by providing a first flow channel opening 12 and a second flow channel opening 15 on the heat exchange component 100, the integration of the heat exchange component 100 can be improved.

[0042] According to the heat exchange component 100 of an embodiment of the present invention, by setting the heat exchange medium of the first flow channel 11 to be ejected into the second flow channel 31 through the jet hole 21, it is beneficial to reduce the flow resistance of the heat exchange component 100, increase the flow rate of the heat exchange medium, improve the heat dissipation effect of the heat exchange component 100, and make the heat exchange component 100 have a higher degree of integration, thereby improving the practicality of the heat exchange component 100.

[0043] In some embodiments of the present invention, Figure 3 As shown, the first flow channel 11 may include a plurality of first branch flow channels 111, and the plurality of first branch flow channels 111 are arranged along a first direction (ie Figure 3 The plurality of first flow channels 111 are spaced apart and arranged in parallel (in the rear direction in FIG), and the plurality of first flow channels 111 are respectively connected to the first flow channel opening 12 and are all opposite the second flow channel 31. The jet plate 2 is provided with multiple groups of jet holes 21 corresponding to the plurality of first flow channels 111, each group having a plurality of jet holes 21. After being diverted to the plurality of first flow channels 111, the heat exchange medium can be ejected through the jet holes 21 into the second flow channel 31, thereby evenly dissipating heat from the battery cells. This improves the heat dissipation effect of the heat exchange assembly 100.

[0044] In some embodiments of the present invention, the first flow channel 11 also includes a collecting flow channel 112, which is located on one side of the first branch flow channel 111 along the second direction. The collecting flow channel 112 extends along the first direction and is connected to multiple first branch flow channels 111. The collecting flow channel 112 is provided with a first flow channel opening 12, and the first direction intersects with the second direction.

[0045] For example, refer to Figure 2-Figure 3 As shown, the second direction is set to intersect with the first direction, such as the first direction can be set to Figure 3 The rear direction shown, and the second direction is Figure 3 The first flow channel 11 also includes a collecting channel 112, which is located on one side of the multiple first branch channels 111 along the second direction. At least a portion of the collecting channel 112 extends along the first direction and is connected to the ends of the multiple first branch channels 111. The collecting channel 112 is provided with a first channel opening 12. The heat exchange medium can flow into the collecting channel 112 from the first channel opening 12 and be diverted along the collecting channel 112 to the multiple first branch channels 111 to uniformly dissipate heat from the battery cells. This helps simplify the structure of the first flow channel 11 and improves the practicality of the heat exchange assembly 100.

[0046] In some embodiments of the present invention, the width of the collecting channel 112 is reduced in the first direction. Figure 3 As shown, the first flow channel opening 12 can be provided at an end of the collecting channel 112 that is away from the first direction, and the width of the collecting channel 112 can be configured to decrease in the first direction, such as by gradually decreasing the width of the collecting channel 112 in the first direction. Of course, the present application is not limited thereto, and a collecting channel 112 that decreases in the first direction and has a partial expansion section is also within the scope of protection of the present application.

[0047] Through the above arrangement, the flow rate of the heat exchange medium diverted from the collecting channel 112 to the plurality of first diverter channels 111 can be made uniform, which is beneficial to improving the heat dissipation effect of the heat exchange component 100 .

[0048] In some embodiments of the present invention, in the second direction, the collecting channel 112 includes a first side wall 112a and a second side wall 112b arranged opposite to each other, the first side wall 112a extends obliquely toward the second side wall 112b, and the first side wall 112a forms an angle α with the first direction, wherein 0<α≤2°.

[0049] For example, refer to Figure 3As shown, the collecting channel 112 includes a first side wall 112a and a second side wall 112b. In the second direction, the first side wall 112a and the second side wall 112b are arranged relative to each other. The first side wall 112a can be located on the side of the collecting channel 112 away from the first branch channel 111 toward the second direction, or on the side of the collecting channel 112 away from the second direction. This application does not impose any restrictions on this.

[0050] The second sidewall 112b can be configured to extend along the first direction, and the first sidewall 112a can be configured to extend obliquely along the first direction toward the second sidewall 112b, with the first sidewall 112a forming an angle α with the first direction, where 0 < α ≤ 2°. Specifically, the angle α between the first sidewall 112a and the first direction can be set to 0.5°; alternatively, the angle α between the first sidewall 112a and the first direction can be set to 1°; alternatively, the angle α between the first sidewall 112a and the first direction can be set to 1.5°, and this application does not impose any restrictions on this. This helps improve the design rationality of the first plate body 1 and enhances the practicality of the heat exchange assembly 100.

[0051] In some embodiments of the present invention, the heat exchange assembly 100 of the embodiment of the present invention further includes a plurality of first partitions 13, which are spaced apart along the first direction to define a plurality of first branch channels 111, and the ends of the plurality of first partitions 13 define a first side wall 112a.

[0052] For example, refer to Figure 3 As shown, the heat exchange assembly 100 also includes multiple first partitions 13, which are plate-like structures. The multiple first partitions 13 are spaced apart along the first direction and define multiple first branch channels 111. The multiple first branch channels 111 are spaced apart along the first direction. A second sidewall 112b is provided on the side of the collecting channel 112 facing the second direction. The end of the first partition 13 in the second direction forms a first end surface, which extends obliquely toward the second sidewall 112b along the first direction. The multiple first end surfaces collectively define the first sidewall 112a. This facilitates simplifying the structure of the heat exchange assembly 100.

[0053] In some embodiments of the present invention, the first plate body 1 is provided with a second partition 14, the second partition 14 is used to separate the collecting channel 112 into a first guide section 1121, a second guide section 1122 and a third guide section 1123, the first guide section 1121 and the second guide section 1122 are connected with the third guide section 1123 along the first direction, the first guide section 1121 is used to connect with several of the multiple first branch channels 111, and the third guide section 1123 is used to connect with the remaining several of the multiple first branch channels 111.

[0054] For example, refer to Figure 3As shown, the first plate body 1 is provided with a second partition 14, the second partition 14 is located in the collecting channel 112 and extends along the extension direction of the collecting channel 112, the second partition 14 is provided in the part of the collecting channel 112 close to the first channel opening 12, and the second partition 14 is used to separate the collecting channel 112 into a first guide section 1121, a second guide section 1122 and a third guide section 1123. The first guide section 1121 and the second guide section 1122 are spaced apart and connected with the third guide section 1123 along the first direction. The first guide section 1121 is located on one side of the second partition 14 close to the first branch channel 111, and the second guide section 1122 is located on the other side of the second partition 14. The first guide section 1121 and the second guide section 1122 are respectively connected with the first channel opening 12. The first guide section 1121 is used to connect with several of the multiple first branch channels 111, and the third guide section 1123 is used to connect with the remaining several of the multiple first branch channels 111.

[0055] During operation, the heat exchange medium can flow from the first flow channel opening 12 into the first guide section 1121 and the second guide section 1122, respectively. The heat exchange medium flowing into the first guide section 1121 can be divided into two parts: one part flows into the plurality of first branch channels 111, and the other part flows directly into the third guide section 1123; the heat exchange medium flowing into the second guide section 1122 flows directly into the third guide section 1123 along the second guide section 1122; and the heat exchange medium flowing into the third guide section 1123 can flow into the remaining plurality of first branch channels 111. Through the above arrangement, the plurality of first branch channels 111 can each have a sufficient flow rate, thereby improving the heat dissipation effect of the heat exchange assembly 100.

[0056] In some embodiments of the present invention, the first branch channels 111 are divided into multiple groups. The multiple groups of first branch channels 111 are arranged sequentially along the first direction and are respectively connected to the collecting channel 112. The multiple first branch channels 111 in each group are connected sequentially.

[0057] For example, the first flow channel 11 may include multiple groups of first branch flow channels 111, which are sequentially arranged along the first direction and respectively communicate with the collecting flow channel 112. Each group of first branch flow channels 111 includes a plurality of, for example, one or more, first branch flow channels 111. The multiple first branch flow channels 111 in the same group are spaced apart and sequentially communicated along the first direction, so that the heat exchange medium can sequentially flow through the multiple first branch flow channels 111 in the same group. This facilitates meeting different working conditions.

[0058] Of course, multiple first branch channels 111 may be provided to be connected in sequence, so that the heat exchange medium can flow through the multiple first branch channels 111 in sequence, and this application does not impose any limitation on this.

[0059] In some embodiments of the present invention, the second flow channel 31 includes a plurality of second branch flow channels 311 spaced apart and arranged along the first direction. Figure 2 and Figure 4 As shown, the second flow channel 31 can be configured to include a plurality of second branch flow channels 311, which are spaced apart and arranged along the first direction, and the plurality of second branch flow channels 311 correspond one-to-one with at least some of the first branch flow channels 111. Furthermore, jet holes 21 can be provided on the jet plate 2 corresponding to the second branch flow channels 311, and the second branch flow channels 311 communicate with the corresponding first branch flow channels 111 through the jet holes 21.

[0060] Specifically, when the heat exchange assembly 100 begins operation, the heat exchange medium in the external pipeline can flow from the first flow channel opening 12 into the plurality of first branch flow channels 111. The heat exchange medium in the plurality of first branch flow channels 111 can then be ejected through the ejection holes 21 into the corresponding second branch flow channels 311. The heat exchange medium can then flow along the second branch flow channels 311 and out through the second flow channel opening 15 to the external pipeline. This arrangement improves the flow stability of the heat exchange medium and enhances the reliability of the heat exchange assembly 100.

[0061] In some embodiments of the present invention, the plurality of first branch channels 111 and the plurality of second branch channels 311 are opposite to each other and are connected through the jet holes 21. Figure 4 As shown, the same number of first and second diverter channels 111 and 311 can be provided, with the plurality of first and second diverter channels 111 corresponding one-to-one to each other, and the jet plate 2 is provided with a plurality of groups of jet holes 21 corresponding to the plurality of second diverter channels 311, respectively. The plurality of groups of jet holes 21 correspond one-to-one to the plurality of second diverter channels 311, so that the plurality of second diverter channels 311 can be connected to the corresponding first diverter channels 111 through the jet holes 21, respectively, so that the heat exchange medium in the first diverter channels 111 can flow into the corresponding second diverter channels 311 and flow directly to the second channel opening 15 along the second diverter channels 311. Through the above arrangement, the flow path of the heat exchange medium in the heat exchange assembly 100 can be shortened, which is conducive to improving the heat exchange efficiency and enhancing the practicality of the heat exchange assembly 100.

[0062] In some embodiments of the present invention, the second flow channel 31 also includes a converging flow channel 312, which is provided with a second flow channel opening 15. The converging flow channel 312 is located on one side of the second branch channel 311 along the third direction. The converging flow channel 312 extends along the first direction and is connected with multiple second branch channels 311. The third direction intersects with the first direction.

[0063] For example, refer to Figure 2 and Figure 4 As shown, the third direction intersects the first direction, such as the first direction can be set to Figure 4The rear direction shown, and the third direction is set to Figure 4 The second flow channel 31 also includes a converging flow channel 312, which is located on one side of the second branch flow channel 311 along the third direction. The converging flow channel 312 extends along the first direction and is connected to the plurality of second branch flow channels 311, so that the heat exchange medium in the plurality of second branch flow channels 311 can be converging into the converging flow channel 312. The converging flow channel 312 is provided with a second flow channel opening 15, so that the heat exchange medium flowing into the converging flow channel 312 can flow directly out of the second flow channel opening 15 to an external pipeline. In this way, the flow path of the second flow channel 31 can be simplified, and the design rationality of the second flow channel 31 can be improved.

[0064] In addition, by setting the collecting channel 112 on one side of the multiple first branch channels 111 along the second direction, and setting the converging channel 312 on one side of the second branch channel 311 along the third direction, the converging channel 312 and the collecting channel 112 can be kept apart, which is beneficial to reducing the heat exchange between the first channel 11 and the second channel 31, and improving the heat dissipation effect of the heat exchange component 100.

[0065] In some embodiments of the present invention, the width of the confluence channel 312 can be increased in the first direction. Figure 4 As shown, one end of the converging channel 312 along the first direction can be connected to the second channel opening 15, and the width of the converging channel 312 can be set to increase in the first direction, such as setting the width of the converging channel 312 to gradually increase in the first direction. Of course, the present application is not limited to this, and the width of the converging channel 312 that increases in the first direction and has a partial contraction section is also within the scope of protection of the present application.

[0066] Through the above arrangement, the width of the converging channel 312 can be adapted to the flow rate of the heat exchange medium, so that turbulence is less likely to form in the converging channel 312, thereby improving the design rationality of the heat exchange component 100.

[0067] It should be noted that the converging flow channel 312 and the collecting flow channel 112 may be arranged in parallel so that the plurality of first branch flow channels 111 (or the plurality of second branch flow channels 311 ) have the same length, thereby improving the flow uniformity of the heat exchange medium.

[0068] In some embodiments of the present invention, Figure 4 As shown, a third partition 32 can be provided within the converging flow channel 312. The third partition 32 is located in the region of the converging flow channel 312 close to the first direction. The third partition 32 is used to guide the heat exchange medium to reduce the possibility of turbulence in the heat exchange medium. This improves the reliability of the heat exchange assembly 100.

[0069] In some embodiments of the present invention, Figure 2 As shown, the thickness of the jet plate 2 can be set to be smaller than the thickness of the first plate body 1 and the thickness of the second plate body 3. In this way, the axial length of the jet hole 21 can be shortened, which is beneficial to improving the jet effect and the heat dissipation effect of the heat exchange component 100.

[0070] In some embodiments of the present invention, the first plate 1 and the second plate 3 have different thicknesses. For example, the second plate 3 can be positioned against the outer wall of a battery cell and perform heat exchange with the battery cell. Furthermore, the second plate 3 can be thicker than the first plate 1 to provide greater structural strength. This improves the overall structural strength of the heat exchange assembly 100, preventing deformation during operation and enhancing the stability of the heat exchange assembly 100.

[0071] In some embodiments of the present invention, the thickness W1 of the first plate body 1 is 1 mm to 1.4 mm, the thickness W2 of the second plate body 3 is 3.5 mm to 4.5 mm, and the thickness W3 of the jet plate 2 is 0.6 mm to 0.8 mm.

[0072] Specifically, the thickness W1 of the first plate 1 can be set to 1.1 mm; or, the thickness W1 of the first plate 1 can be set to 1.2 mm; or, the thickness W1 of the first plate 1 can be set to 1.3 mm, and this application does not impose any restrictions on this. The thickness W2 of the second plate 3 can be set to 3.6 mm; or, the thickness W2 of the second plate 3 can be set to 4 mm; or, the thickness W2 of the second plate 3 can be set to 4.4 mm, and this application does not impose any restrictions on this. The thickness W3 of the jet plate 2 can be set to 0.65 mm; or, the thickness W3 of the jet plate 2 can be set to 0.7 mm; or, the thickness W3 of the jet plate 2 can be set to 0.75 mm, and this application does not impose any restrictions on this.

[0073] It should be noted that the first plate 1 is processed by stamping; the jet plate 2 is cut and formed, followed by CNC machining to form the jet holes 21; and the second plate 3 is cut and formed, followed by CNC machining to form the second flow channel 31. Furthermore, the materials for the first plate 1, jet plate 2, and second plate 3 can be 3003MOD or 3003+6061+300.

[0074] Through the above arrangement, the heat exchange component 100 can have both structural stability and lightness, thereby improving the design rationality of the heat exchange component 100.

[0075] In some embodiments of the present invention, at least a portion of the jet holes 21 may be configured as circular holes with a diameter of ≤2 mm, such as 1.5 mm, 1 mm, etc. This configuration ensures the jet effect of the jet holes 21 and improves the reliability of the heat exchange assembly 100.

[0076] In some embodiments of the present invention, at least a portion of the jet holes 21 can be configured as rectangular holes, with a length of ≤6 mm and a width of ≤1 mm. For example, the length of the rectangular holes can be 5 mm and the width can be 1 mm; alternatively, the length of the rectangular holes can be 4.5 mm and the width can be 0.8 mm. This is not a limitation of the present application. This configuration ensures the jet effect of the jet holes 21 and improves the reliability of the heat exchange assembly 100.

[0077] In some embodiments of the present invention, the first flow channel opening 12 and the second flow channel opening 15 are both located on the first plate body 1 , a connecting hole 22 is provided on the jet plate 2 , and the second flow channel opening 15 is connected to the second flow channel 31 through the connecting hole 22 .

[0078] For example, refer to Figure 2 and Figure 3 As shown, both the first flow channel opening 12 and the second flow channel opening 15 can be provided on the first plate body 1. The first flow channel opening 12 and the second flow channel opening 15 are constructed to penetrate the first plate body 1 along the thickness direction. The first flow channel opening 12 is opposite and connected to the first flow channel 11. The second flow channel opening 15 is staggered with the first flow channel 11 and opposite the second flow channel 31. The jet plate 2 is provided with a connecting hole 22 corresponding to the second flow channel opening 15. The connecting hole 22 is used to connect the second flow channel 31 with the second flow channel opening 15. This helps reduce the difficulty of processing and layout of the heat exchange assembly 100 and improves the practicality of the heat exchange assembly 100.

[0079] In some embodiments of the present invention, Figure 3 As shown, the first flow channel opening 12 and the second flow channel opening 15 can be arranged on the same side of the first plate body 1 away from the first direction (ie Figure 3 Through the above arrangement, the external pipe can be easily connected to the heat exchange assembly 100, which reduces the difficulty of installing the heat exchange assembly 100 and improves the practicality of the heat exchange assembly 100.

[0080] The present invention also provides a battery pack.

[0081] A battery pack according to an embodiment of the present invention includes: a battery cell and a heat exchange assembly 100 according to any of the above embodiments, wherein the heat exchange assembly 100 exchanges heat with the battery cell.

[0082] According to the battery pack of an embodiment of the present invention, by setting the heat exchange medium of the first flow channel 11, it can be ejected into the second flow channel 31 through the jet hole 21, which is beneficial to reducing the flow resistance of the heat exchange component 100, increasing the flow rate of the heat exchange medium, and improving the heat dissipation effect of the heat exchange component 100. It can also make the heat exchange component 100 have a higher degree of integration, improve the practicality of the heat exchange component 100, and improve the overall performance of the battery pack.

[0083] The present invention further provides an electrical device.

[0084] An electric device according to an embodiment of the present invention includes: a battery pack according to any one of the above embodiments.

[0085] According to the electrical device of an embodiment of the present invention, by setting the heat exchange medium of the first flow channel 11, it can be ejected into the second flow channel 31 through the jet hole 21, which is beneficial to reducing the flow resistance of the heat exchange component 100, increasing the flow rate of the heat exchange medium, and improving the heat dissipation effect of the heat exchange component 100. It can also make the heat exchange component 100 have a higher degree of integration, improve the practicality of the heat exchange component 100, improve the overall performance of the battery pack, and improve the reliability of the electrical device.

[0086] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0087] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0088] In the description of the present invention, "plurality" means two or more.

[0089] In the description of the present invention, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features not being in direct contact with each other but being in contact with each other via another feature therebetween.

[0090] In the description of the present invention, “on”, “above” and “above” a first feature of a second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0091] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0092] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A heat exchange component (100), characterized in that: include: A first plate body (1), a jet plate (2) and a second plate body (3), wherein the first plate body (1), the jet plate (2) and the second plate body (3) are stacked, the jet plate (2) is located between the first plate body (1) and the second plate body (3), the first plate body (1) and the jet plate (2) form a first flow channel (11), the second plate body (3) and the jet plate (2) form a second flow channel (31), the jet plate (2) is provided with a plurality of jet holes (21), and the jet holes (21) communicate with the first flow channel (11) and the second flow channel (31); The first flow channel (11) is in communication with a first flow channel opening (12), the second flow channel (31) is in communication with a second flow channel opening (15), and the first flow channel opening (12) and the second flow channel opening (15) are arranged in the heat exchange component (100).

2. The heat exchange assembly (100) according to claim 1, characterized in that: The first flow channel (11) comprises a plurality of first branch flow channels (111) arranged at intervals along a first direction.

3. The heat exchange assembly (100) according to claim 2, characterized in that: The first flow channel (11) further comprises a collecting flow channel (112), wherein the collecting flow channel (112) is located on one side of the first branch flow channel (111) along the second direction, the collecting flow channel (112) extends along the first direction and is connected with a plurality of the first branch flow channels (111), the collecting flow channel (112) is provided with the first flow channel opening (12), and the first direction intersects with the second direction.

4. The heat exchange assembly (100) according to claim 3, characterized in that: The width dimension of the collecting flow channel (112) decreases in a first direction.

5. The heat exchange assembly (100) according to any one of claims 2 to 4, characterized in that: The second flow channel (31) includes a plurality of second branch flow channels (311) arranged at intervals along the first direction.

6. The heat exchange assembly (100) according to claim 5, characterized in that: The plurality of first branch flow channels (111) and the plurality of second branch flow channels (311) are opposite to each other and are respectively connected through the jet holes (21).

7. The heat exchange assembly (100) according to claim 5, characterized in that: The second flow channel (31) further comprises a converging flow channel (312), the converging flow channel (312) being provided with the second flow channel opening (15), the converging flow channel (312) being located on one side of the second branch flow channel (311) along a third direction, the converging flow channel (312) extending along the first direction and being connected to a plurality of the second branch flow channels (311), the third direction intersecting with the first direction.

8. The heat exchange assembly (100) according to claim 7, characterized in that: The converging flow channel (312) is configured such that a width dimension increases in a first direction.

9. The heat exchange assembly (100) according to claim 1, characterized in that: The thickness of the jet plate (2) is respectively smaller than the thickness of the first plate body (1) and the thickness of the second plate body (3); The first plate body (1) and the second plate body (3) have different thicknesses.

10. The heat exchange assembly (100) according to claim 9, characterized in that: The thickness W1 of the first plate body (1) is 1 mm to 1.4 mm, the thickness W2 of the second plate body (3) is 3.5 mm to 4.5 mm, and the thickness W3 of the jet plate (2) is 0.6 mm to 0.8 mm; At least a portion of the jet holes (21) are configured as circular holes, and the diameter of the circular holes is ≤2 mm; or At least a portion of the jet holes (21) are configured as rectangular holes, wherein the length of the rectangular holes is ≤6 mm and the width of the rectangular holes is ≤1 mm.

11. The heat exchange assembly (100) according to claim 1, characterized in that: The first flow channel opening (12) and the second flow channel opening (15) are both located on the first plate body (1), a connecting hole (22) is provided on the jet plate (2), and the second flow channel opening (15) is connected to the second flow channel (31) through the connecting hole (22).

12. A battery pack, characterized in that: include: A battery cell and a heat exchange assembly (100) according to any one of claims 1 to 11, wherein the heat exchange assembly (100) exchanges heat with the battery cell.

13. An electrical device, characterized in that: include: The battery pack according to claim 12.

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