Heat exchanger, power module and electric equipment

Abstract

The utility model discloses a heat exchanger, power module and electric equipment, the heat exchanger comprises a body, a heat exchange medium inlet, a heat exchange medium outlet, a first heat exchange flow channel and a second heat exchange flow channel are formed on the body, the first heat exchange flow channel and the second heat exchange flow channel are located at the two sides of the heat exchange medium inlet along the first direction; the first heat exchange flow channel and the second heat exchange flow channel respectively comprise a first flow channel section and a plurality of second flow channel sections, one end of the first flow channel section is communicated with the heat exchange medium inlet, the first flow channel section and the plurality of second flow channel sections extend along the first direction, and the plurality of second flow channel sections are respectively positioned on two sides of the first flow channel section along the second direction; one end of each second flow channel section communicates with the other end of the first flow channel section, the other end of each second flow channel section communicates with the heat exchange medium outlet, and the first direction is perpendicular to the second direction. According to the heat exchanger, the heat exchange effect of the heat exchanger is good, and the heat exchange uniformity of the heat exchanger is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, in particular to a heat exchanger, a power module and an electrical device. Background Art

[0002] As power semiconductor modules develop towards miniaturization and integration, the power consumption per unit area also increases, that is, the heat generated by the chip increases. If the heat generated by the chip cannot be transferred in time, the chip junction temperature will be too high, which will not only affect the product's working performance, but may even cause the power module to fail directly, thereby affecting the use of the system using the power module.

[0003] In the related art, a heat sink is usually used to transfer the heat generated by the chip to a cooling medium. However, the current heat sink has the defect of uneven distribution of heat dissipation capacity. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a heat exchanger with good heat exchange effect and improved heat exchange uniformity of the heat exchanger.

[0005] Another object of the present invention is to provide a power module using the above heat exchanger.

[0006] Another object of the present utility model is to provide an electrical device using the power module.

[0007] According to the heat exchanger of the first aspect of the utility model, the embodiment includes: a body, on which a heat exchange medium inlet, a heat exchange medium outlet, a first heat exchange channel and a second heat exchange channel are formed, the first heat exchange channel and the second heat exchange channel are located on both sides of the heat exchange medium inlet along the first direction, the first heat exchange channel and the second heat exchange channel respectively include a first channel section and a plurality of second channel sections, one end of the first channel section is connected to the heat exchange medium inlet, the first channel section and the plurality of second channel sections all extend along the first direction, the plurality of second channel sections are respectively located on both sides of the first channel section along the second direction, one end of each of the second channel sections is connected to the other end of the first channel section, the other end of each of the second channel sections is connected to the heat exchange medium outlet, and the first direction is perpendicular to the second direction.

[0008] According to the heat exchanger of the embodiment of the utility model, by setting the first heat exchange flow channel and the second heat exchange flow channel, the heat exchange medium flowing in from the heat exchange medium inlet can be split, so that the heat exchange capacity at the first heat exchange medium flow channel and the second heat exchange flow channel of the heat exchanger are roughly the same, thereby making the heat exchange capacity of the heat exchanger more balanced, improving the heat exchange effect of the heat exchanger, and improving the heat exchange uniformity of the heat exchanger. In addition, the flow path of the heat exchange medium in the first direction is shortened, further improving the heat exchange effect, and also making the heat exchange on both sides of the length direction of the heat exchanger more uniform. In addition, by setting the second flow channel section, the heat exchange uniformity of the heat exchanger opposite to the first heat exchange flow channel is improved, thereby further improving the heat exchange effect and heat exchange uniformity of the first heat exchange flow channel and the second heat exchange flow channel.

[0009] According to some embodiments of the present invention, the heat exchange medium inlet is located in the middle of the body along the first direction; the heat exchange medium outlet is arranged adjacent to the heat exchange medium inlet, and the heat exchange medium outlet is located on any side of the heat exchange medium inlet along the first direction.

[0010] According to some embodiments of the present invention, the ends of the first flow channel sections of the first heat exchange channel and the second heat exchange channel that are adjacent to each other are connected to the heat exchange medium inlet, the ends of the first flow channel sections of the first heat exchange channel and the second heat exchange channel that are away from each other are respectively connected to the ends of the corresponding multiple second flow channel sections that are away from the heat exchange medium inlet, and the ends of the multiple second flow channel sections of the first heat exchange channel and the second heat exchange channel that are adjacent to each other are all connected to the heat exchange medium outlet.

[0011] According to some embodiments of the utility model, the main body includes: a main body, one side of which is open, and the heat exchange medium inlet and the heat exchange medium outlet are formed on the main body; a heat exchange plate, which is arranged on the one side of the main body, and the first heat exchange channel and the second heat exchange channel are jointly defined between the heat exchange plate and the main body.

[0012] According to some embodiments of the present invention, a plurality of first partitions are provided on a surface of the heat exchange plate on one side facing the main body, the plurality of first partitions extend along the first direction, the plurality of first partitions are arranged at intervals along the second direction, and the plurality of first partitions divide the space between the heat exchange plate and the main body into the first flow channel section and a plurality of second flow channel sections.

[0013] According to some embodiments of the utility model, a second partition is provided on the surface of the heat exchange plate on one side facing the main body, the second partition extends along the second direction, the second partition intersects with multiple first partitions, and the second partition divides the space between the heat exchange plate and the main body into the first heat exchange channel and the second heat exchange channel.

[0014] According to some embodiments of the present invention, a plurality of heat sinks are provided on a surface of the heat exchange plate facing the main body, and the plurality of heat sinks extend into the corresponding first heat exchange channel and the second heat exchange channel respectively.

[0015] According to some embodiments of the present invention, a return flow channel is formed between the other end of the first flow channel section and the one end of the second flow channel section; the plurality of heat sinks extend into the first flow channel section and the plurality of the second flow channel sections respectively, and the return flow channel is located on the side of the plurality of heat sinks away from the heat exchange medium inlet; or the plurality of heat sinks extend into the first flow channel section, the plurality of the second flow channel sections and the return flow channel respectively.

[0016] According to some embodiments of the present invention, the heat sink is a heat sink.

[0017] According to some embodiments of the present invention, the cross-sectional shape of the heat sink is circular, elliptical, oblong or polygonal.

[0018] According to some embodiments of the utility model, the heat sink is a heat sink, one end of the heat sink is located in the first flow channel section and adjacent to the second partition, the other end of the heat sink extends around the first partition into the second flow channel section and adjacent to the second partition, and a plurality of the heat sinks are arranged at intervals in a direction away from the corresponding first partition.

[0019] According to some embodiments of the present invention, the main body and the heat exchange plate are separate structural parts.

[0020] According to some embodiments of the utility model, the main body includes: a base, one side of the base is open, and the heat exchange medium inlet and the heat exchange medium outlet are formed on the base; a partition, the partition is arranged in the base, and a connecting inlet and a plurality of connecting outlets are formed on the partition, the heat exchange plate is arranged on the side of the partition away from the base, and the first heat exchange channel and the second heat exchange channel are defined between the heat exchange plate and the partition, the first heat exchange channel and the second heat exchange channel are connected to the heat exchange medium inlet through the connecting inlet, and the first heat exchange channel and the second heat exchange channel are connected to the heat exchange medium outlet through a plurality of connecting outlets.

[0021] According to some embodiments of the present invention, the plurality of communication outlets are respectively located on both sides of the communication inlet along the second direction, and the plurality of second flow channel sections along the second direction and located on the same side of the first flow channel section are connected to the corresponding communication outlets.

[0022] According to some embodiments of the utility model, an inlet flow channel and a plurality of outlet flow channels are defined between the partition and the base, the connecting inlet is connected to the heat exchange medium inlet through the inlet flow channel, and the plurality of connecting outlets are connected to the heat exchange medium outlets through the plurality of outlet flow channels, respectively.

[0023] According to some embodiments of the present invention, the inlet flow channel extends along the first direction. And / or one end of the outlet flow channel is connected to the heat exchange medium inlet, and the other end of the outlet flow channel extends in directions away from each other and is respectively connected to the corresponding communication outlets.

[0024] According to some embodiments of the present invention, the base, the partition and the heat exchange plate are connected as one body.

[0025] According to some embodiments of the present invention, the heat exchange medium inlet and the heat exchange medium outlet are respectively located on two side surfaces of the heat exchanger along the first direction.

[0026] According to some embodiments of the present invention, the heat exchanger is a copper part or an aluminum part.

[0027] A power module according to an embodiment of the second aspect of the utility model comprises the heat exchanger according to the embodiment of the first aspect.

[0028] An electrical device according to an embodiment of the third aspect of the utility model includes a power module according to the embodiment of the second aspect.

[0029] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 is a schematic diagram of a heat exchanger according to an embodiment of the utility model;

[0032] Figure 2 is a schematic diagram of a heat exchange plate of a heat exchanger according to an embodiment of the utility model, wherein no second separator is provided;

[0033] Figure 3is a schematic diagram of a heat exchange plate of a heat exchanger according to an embodiment of the utility model;

[0034] Figure 4 is a top view of a heat exchanger according to an embodiment of the utility model;

[0035] Figure 5 is a schematic diagram of a heat exchange plate of a heat exchanger according to another embodiment of the utility model, wherein the second partition is not provided;

[0036] Figure 6 is a schematic diagram of a heat exchange plate of a heat exchanger according to another embodiment of the utility model;

[0037] Figure 7 is a top view of a heat exchanger according to another embodiment of the utility model;

[0038] Figure 8 is a schematic diagram of a heat sink of a heat exchanger according to an embodiment of the utility model, wherein the cross-sectional shape of the heat sink is circular;

[0039] Fig. 9 is a schematic diagram of a heat sink of a heat exchanger according to an embodiment of the utility model, wherein the cross-sectional shape of the heat sink is an ellipse;

[0040] Fig.10 is a schematic diagram of a heat sink of a heat exchanger according to an embodiment of the utility model, wherein the cross-sectional shape of the heat sink is a quadrilateral;

[0041] Fig.11 is a schematic diagram of a heat sink of a heat exchanger according to an embodiment of the utility model, wherein the cross-sectional shape of the heat sink is an oblong;

[0042] Fig.12 is a schematic diagram of a heat sink of a heat exchanger according to an embodiment of the utility model, wherein the heat sink is a heat sink;

[0043] Fig.13 is a bottom view of a heat sink of a heat exchanger according to an embodiment of the utility model;

[0044] Fig.14 is an exploded diagram of a heat exchanger according to an embodiment of the utility model;

[0045] Fig.15 is a schematic diagram of a heat exchanger according to another embodiment of the utility model;

[0046] Fig.16 is an exploded view of a heat exchanger according to yet another embodiment of the utility model;

[0047] Fig.17 is a perspective view of an exploded state of a heat exchanger according to another embodiment of the utility model;

[0048] Fig.18 It is a schematic diagram of the flow of heat exchange medium in a heat exchanger according to an embodiment of the utility model.

[0049] Reference numerals:

[0050] 100. Heat exchanger;

[0051] 1. Main body; 11. Heat exchange medium inlet; 12. Heat exchange medium outlet;

[0052] 13. first heat exchange flow channel; 131. first flow channel section; 132. second flow channel section;

[0053] 14. second heat exchange flow channel; 15. main body; 151. base body; 152. partition;

[0054] 1521, connected to the inlet; 1522, connected to the outlet; 153, inlet flow channel; 154, outlet flow channel;

[0055] 16, heat exchange plate; 161, first partition; 162, second partition;

[0056] 163. heat sink; 1631. heat sink; 1632. heat sink; 17. return flow channel. DETAILED DESCRIPTION

[0057] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 18 The heat exchanger 100 according to the first embodiment of the present invention is described. In the following description of the present application, the heat exchanger 100 is mainly used for heat dissipation, but is not limited thereto.

[0058] like Figure 1 As shown, the heat exchanger 100 according to the first embodiment of the utility model includes a body 1.

[0059] Specifically, the body 1 is formed with a heat exchange medium inlet 11, a heat exchange medium outlet 12, a first heat exchange channel 13 and a second heat exchange channel 14. The first heat exchange channel 13 and the second heat exchange channel 14 are located along a first direction (for example, Figure 1 The first heat exchange channel 13 and the second heat exchange channel 14 respectively include a first channel segment 131 and a plurality of second channel segments 132. One end of the first channel segment 131 is connected to the heat exchange medium inlet 11. The first channel segment 131 and the plurality of second channel segments 132 extend along the first direction. The plurality of second channel segments 132 are respectively located at the first channel segment 131 along the second direction (for example, Figure 1The first direction and the second direction are perpendicular to each other. In the description of the present utility model, "multiple" means two or more.

[0060] For example, in Figure 1 and Fig.18 In the example, the body 1 extends in the first direction, and the width direction of the body 1 is also the second direction. The first heat exchange channel 13 and the second heat exchange channel 14 are located on the left and right sides of the heat exchange medium inlet 11. The structures of the first heat exchange channel 13 and the second heat exchange channel 14 can be set to be the same. The first heat exchange channel 13 located on the left side of the heat exchange medium inlet 11 is used as an example for detailed description. The first heat exchange channel 13 includes a first channel section 131 and two second channel sections 132. The first channel section 131 and the second channel section 132 both extend in the left-right direction. The two second channel sections 132 are respectively located on the left and right sides of the first channel section 131. Figure 1 The front and rear sides shown. The right end of the first flow channel section 131 is connected to the heat exchange medium inlet 11, and the left end of the first flow channel section 131 is connected to the left ends of the two second flow channel sections 132 respectively, and the right ends of the two second flow channel sections 132 are connected to the heat exchange medium outlet 12. Of course, the second flow channel sections 132 can also be set to three or more, which is not specifically limited here. It should be noted that the heat exchange medium can be water or coolant, and refrigerant can also be used as the cooling medium. The heat exchanger 100 has strong versatility. The multiple second flow channel sections 132 are respectively located along the second direction (for example, Figure 1 The two sides of the front-to-back direction in the figure refer to: when there are two second flow channel sections 132, one second flow channel section 132 is located at the first flow channel section 131. Figure 1 On the front side shown in FIG. 1 , another second flow channel section 132 is located at the first flow channel section 131. Figure 1 When the second flow channel segment 132 includes three or more, the third and other second flow channel segments 132 are not specifically limited and can be arranged at the first flow channel segment 131. Figure 1 Front or rear side shown.

[0061] Combination Fig.18 , the flow process of the heat exchange medium in the heat exchanger 100 (such as Fig.18The heat exchange medium (indicated by the arrow in the middle) is roughly as follows: after the heat exchange medium flows into the body 1 from the heat exchange medium inlet 11, a part of the heat exchange medium flows through the first heat exchange channel 13 and then flows to the heat exchange medium outlet 12, and the other part of the heat exchange medium flows through the second heat exchange channel 14 and flows to the heat exchange medium outlet 12. During the flow of the heat exchange medium, the heat exchange medium exchanges heat with the heat exchange components to be contacted with the body 1 through the body 1 to reduce or increase the temperature of the heat exchange components to be contacted with the body 1. The heat exchange medium flowing into the first heat exchange channel 13 and the second heat exchange channel 14 flows through the corresponding first channel section 131 and multiple second channel sections 132 in sequence, flows to the heat exchange medium outlet 12, and then flows out to the outside of the heat exchanger 100.

[0062] In this arrangement, by setting the first heat exchange flow channel 13 and the second heat exchange flow channel 14, and the heat exchange medium inlet 11 is arranged between the first heat exchange flow channel 13 and the second heat exchange flow channel 14, the heat exchange medium flowing in from the heat exchange medium inlet 11 can be divided, and the state of the heat exchange medium flowing into the first heat exchange flow channel 13 and the second heat exchange flow channel 14, such as the temperature, is roughly the same, so that the heat exchange capacity at the first heat exchange medium flow channel and the second heat exchange flow channel 14 of the heat exchanger 100 is roughly the same, thereby making the heat exchange capacity of the heat exchanger 100 more balanced, improving the heat exchange effect of the heat exchanger 100, and improving the heat exchange uniformity of the heat exchanger 100. In addition, compared with the arrangement in which the heat exchange medium flows in from one side in the length direction of the body 1 and flows out from the other side, the flow path of the heat exchange medium in the first direction is shortened, further improving the heat exchange effect, and making the heat exchange on both sides in the length direction of the heat exchanger 100 more uniform. In addition, by setting the second flow channel section 132, taking the left part of the main body 1 as an example, the heat exchange uniformity of the heat exchanger 100 opposite to the first heat exchange flow channel 13 is improved, thereby further improving the heat exchange effect and heat exchange uniformity of the first heat exchange flow channel 13 and the second heat exchange flow channel 14.

[0063] According to the heat exchanger 100 of the embodiment of the utility model, by setting the first heat exchange channel 13 and the second heat exchange channel 14, the heat exchange medium flowing in from the heat exchange medium inlet 11 can be divided, so that the heat exchange capacity at the first heat exchange medium channel 13 and the second heat exchange channel 14 of the heat exchanger 100 is roughly the same, thereby making the heat exchange capacity of the heat exchanger 100 more balanced, improving the heat exchange effect of the heat exchanger 100, and improving the heat exchange uniformity of the heat exchanger 100. In addition, the flow path of the heat exchange medium in the first direction is shortened, further improving the heat exchange effect, and also making the heat exchange on both sides of the length direction of the heat exchanger 100 more uniform. In addition, by setting the second channel section 132, the heat exchange uniformity of the heat exchanger 100 opposite to the first heat exchange channel 13 is improved, thereby further improving the heat exchange effect and heat exchange uniformity of the first heat exchange channel 13 and the second heat exchange channel 14.

[0064] According to some embodiments of the present invention, Figure 1 and Fig.18 , the heat exchange medium inlet 11 is located in the middle of the body 1 along the first direction. Figure 1 and Fig.18 In the example, the heat exchange medium inlet 11 is opposite to the center position of the length direction of the body 1. In this way, the first heat exchange flow channel 13 and the second heat exchange flow channel 14 have the same or nearly the same length in the first direction. Compared with the conventional technology in which the heat exchange medium flows in from one side of the length direction of the body 1 and flows out from the other side, the flow span of the heat exchange medium (or the cold end and the hot end) in the first direction is reduced by half, and the temperature difference between the place near the heat exchange medium inlet 11 and the end of the body 1 far away from the heat exchange medium inlet 11 in the first direction is reduced, thereby increasing the temperature equalization effect of the heat exchanger 100. In addition, the heat exchange medium flowing in from the heat exchange medium inlet 11 can flow quickly into the first heat exchange flow channel 13 and the second heat exchange flow channel 14, shortening the flow distance of the heat exchange medium between the heat exchange medium inlet 11 and the end of the first heat exchange flow channel 13 near the heat exchange medium inlet 11 and the end of the second heat exchange flow channel 14 near the heat exchange medium inlet 11, thereby ensuring the heat exchange effect of the heat exchange medium. In addition, when the heat exchanger 100 is used in a power module, the middle portion of the main body 1 of the heat exchanger 100 is the position with the strongest thermal coupling, and the thermal coupling effects at the two ends in the length direction and the two sides in the width direction are the lowest. The heat exchange medium of the present application, such as water, enters from the middle and flows out from both sides, which can effectively offset the thermal coupling effect and optimize the heat exchange efficiency.

[0065] Combination Figure 1 and Fig.18 , the heat exchange medium outlet 12 is disposed adjacent to the heat exchange medium inlet 11, and the heat exchange medium outlet 12 is located on any side of the heat exchange medium inlet 11 along the first direction. Figure 1 and Fig.18 In the example, the heat exchange medium outlet 12 is located on the right side of the heat exchange medium inlet 11, and the heat exchange medium of the plurality of second flow channel sections 132 converges to the heat exchange medium outlet 12 and then flows out. Therefore, by setting the heat exchange medium outlet 12 adjacent to the heat exchange medium inlet 11, the distance between the other end of the plurality of second flow channel sections 132 and the heat exchange medium inlet 11 is reduced, which is more conducive to the convergence of the heat exchange medium at the heat exchange medium outlet 12, shortening the time for the heat exchange medium to flow on the main body 1 after heat exchange with the heat exchange component, and ensuring the heat exchange effect of the heat exchanger 100. In addition, the heat exchange medium outlet 12 is located on either side of the heat exchange medium inlet 11 along the first direction, and the positions of the heat exchange medium inlet 11 and the heat exchange medium outlet 12 are reasonably arranged, which is conducive to the flow of the heat exchange medium in the main body 1.

[0066] According to some embodiments of the present invention, referring to Figure 1 and Fig.18The ends of the first flow channel sections 131 of the first heat exchange channel 13 and the second heat exchange channel 14 that are adjacent to each other are connected to the heat exchange medium inlet 11, and the ends of the first flow channel sections 131 of the first heat exchange channel 13 and the second heat exchange channel 14 that are away from each other are respectively connected to the ends of the corresponding multiple second flow channel sections 132 that are away from the heat exchange medium inlet 11, and the ends of the multiple second flow channel sections 132 of the first heat exchange channel 13 and the second heat exchange channel 14 that are adjacent to each other are all connected to the heat exchange medium outlet 12.

[0067] For example, in Figure 1 and Fig.18 In the example, the first flow channel section 131 and the second flow channel section 132 both extend in the first direction. After the heat exchange medium flows in from the heat exchange medium inlet 11, it flows to the ends of the first flow channel sections 131 of the first heat exchange flow channel 13 and the second heat exchange flow channel 14 that are adjacent to each other (that is, the ends close to the heat exchange medium inlet 11), and then flows along the extension direction of the first flow channel section 131 in the direction away from the heat exchange medium inlet 11, flows to the ends of the first flow channel sections 131 of the first heat exchange flow channel 13 and the second heat exchange flow channel 14 that are away from each other, and then flows back to the corresponding multiple second flow channel sections 132, flows along the extension direction of the second flow channel section 132 to the ends of the multiple second flow channel sections 132 of the first heat exchange flow channel 13 and the second heat exchange flow channel 14 that are adjacent to each other, and then flows to the heat exchange medium outlet 12.

[0068] With such a configuration, the heat exchange medium flowing to both ends of the length direction of the body 1 can flow back at the corresponding ends of the length direction of the body 1, further increasing the temperature equalization effect of the heat exchanger 100 and improving the heat dissipation uniformity of the heat exchanger 100. Compared with the conventional heat exchanger 100, the heat exchanger 100 of the present application not only has a lower junction temperature under the same simulation settings, but also reduces the temperature difference within each phase of the three phases of the power module in contact with the heat exchanger 100 by about 50%, and reduces the temperature difference between the phases by about 80%, so that the heat exchange performance of the heat exchanger 100 is better.

[0069] According to some embodiments of the present invention, referring to Figure 1 The body 1 includes a main body 15 and a heat exchange plate 16. One side of the main body 15 is open, and a heat exchange medium inlet 11 and a heat exchange medium outlet 12 are formed on the main body 15. The heat exchange plate 16 is arranged on one side of the main body 15, and the heat exchange plate 16 and the main body 15 jointly define a first heat exchange channel 13 and a second heat exchange channel 14. For example, in Figure 1In the example, the upper side of the main body 15 is open, the heat exchange plate 16 is located above the main body 15, and the lower surface of the heat exchange plate 16 faces the open side of the main body 15. After the heat exchange plate 16 is connected to the main body 15, the space between the heat exchange plate 16 and the main body 15 can be divided into a first heat exchange channel 13 and a second heat exchange channel 14. When the heat exchanger 100 is used for a power module, the upper surface of the heat exchange plate 16 can contact the three phases of the power module so that the heat exchange medium exchanges heat with the three phases. In this way, the positions of the heat exchange medium inlet 11 and the heat exchange medium outlet 12 are reasonably set, which can avoid mutual interference with the components of the power module, and is conducive to the use of the heat exchanger 100. In addition, the heat exchanger 100 has a simple structure, convenient production and processing, and high production efficiency.

[0070] According to some embodiments of the present invention, Figure 2-Figure 6 A plurality of first partitions 161 are provided on the surface of the heat exchange plate 16 on one side facing the main body 15. The plurality of first partitions 161 extend along the first direction, and the plurality of first partitions 161 are arranged at intervals along the second direction. The plurality of first partitions 161 divide the space between the heat exchange plate 16 and the main body 15 into a first flow channel section 131 and a plurality of second flow channel sections 132.

[0071] For example, in Figure 2-Figure 6 In the example, two first separators 161 are provided, and both of the two first separators 161 extend along the length direction of the heat exchange plate 16, and the two first separators 161 are arranged at intervals along the width direction of the heat exchange plate 16. When the main body 15 and the heat exchange plate 16 are assembled, the first separator 161 can separate the space between the heat exchange plate 16 and the main body 15 into a first flow channel section 131 and two second flow channel sections 132 of the first heat exchange channel 13, and at the same time, the second heat exchange channel 14 is separated into a first flow channel section 131 and two second flow channel sections 132. With such an arrangement, the first separator 161 has a simple structure, low production difficulty, and high production efficiency. In addition, by setting the first separator 161, the first flow channel section 131 and the second flow channel section 132 can be defined, which is beneficial to the flow of the heat exchange medium in the first flow channel section 131 and the second flow channel section 132, and reduces the mutual interference of the heat exchange medium in the first flow channel section 131 and the second flow channel section 132. For example, the first partition 161 extends linearly along the first direction to facilitate the smooth flow of the heat exchange medium in the first heat exchange channel 13 or the second heat exchange channel 14, with a small flow resistance. It should be noted that the first partition 161 and the heat exchange plate 16 can be an integral structural member to facilitate the use and installation of the heat exchange plate 16. Of course, the first partition 161 and the heat exchange plate 16 can also be separately arranged to facilitate the use of the first partition 161 and the heat exchange plate 16.

[0072] According to some embodiments of the present invention, referring to Figure 3 and Figure 6A second partition 162 is provided on the surface of the heat exchange plate 16 facing the main body 15. The second partition 162 extends along the second direction and intersects with the plurality of first partitions 161. The second partition 162 divides the space between the heat exchange plate 16 and the main body 15 into a first heat exchange channel 13 and a second heat exchange channel 14. For example, Figure 3 and Figure 6 In the example, the second separator 162 is provided on the lower surface of the heat exchange plate 16, and the extension direction of the second separator 152 is perpendicular to the extension direction of the first separator 152. Thus, under the joint action of the first separator 161 and the second separator 162, the space between the heat exchange plate 16 and the main body 15 can be divided into two first flow channel sections 131 and four second flow channel sections 132, so as to facilitate the smooth flow of the heat exchange medium in the corresponding flow channel. In addition, by providing the second separator 162, it is ensured that the heat exchange medium flowing in from the heat exchange medium inlet 11 can be divided into two parts, one part flows into the first heat exchange flow channel 13, and the other part flows into the second heat exchange flow channel 14, thereby ensuring the heat exchange uniformity in the first heat exchange flow channel 13 and the second heat exchange flow channel 14. In addition, the second separator 162 has a simple structure, which can simplify the structure of the heat exchanger 100, reduce the production difficulty of the heat exchanger 100, and improve the production efficiency. For example, the second separator 162 extends linearly along the second direction.

[0073] According to some embodiments of the present invention, Figure 2 A plurality of heat sinks 163 are disposed on the surface of the heat exchange plate 16 facing the main body 15, and the plurality of heat sinks 163 extend into the corresponding first heat exchange channel 13 and the second heat exchange channel 14 respectively. Figure 2 In the example, a plurality of heat sinks 163 are provided on the lower side of the heat exchange plate 16, and the plurality of heat sinks 163 extend along the thickness direction of the heat exchange plate 16. The heat sinks 163 can extend into the corresponding first heat exchange channel 13 and the second heat exchange channel 14 to contact the heat exchange medium. Thus, the heat exchange components to be exchanged, such as power modules, can be in contact with the heat exchange medium through the plurality of heat sinks 163 to exchange heat, thereby increasing the contact area between the heat sink 163 and the heat exchange medium, thereby improving the heat exchange efficiency of the heat exchange between the power module and the heat exchange medium, and further improving the heat exchange performance of the heat exchanger 100, which is more conducive to the use of the heat exchanger 100. It should be noted that the shape and size of the heat sink 163 can be set according to the actual situation to better meet the actual application.

[0074] Optionally, the free end surface of the heat sink 163 is flush with the surface of the first partition 161 and / or the second partition 162 facing the main body 15, or the surface of the first partition 161 and / or the second partition 162 facing the main body 15 protrudes from the free end surface of the heat sink 163. Figure 2In the example, the surface of the first partition 161 facing the main body 15 protrudes from the free end surface of the heat sink 163. In this way, the separation effect of the first partition 161 is ensured, thereby preventing the heat exchange medium from flowing through the first flow channel section 131 and the second flow channel section 132, so that the heat exchange medium in the first flow channel section 131 can only flow to the end of the first flow channel section 131 away from the heat exchange medium inlet 11 and then flow into the second flow channel section 132, thereby ensuring that the heat exchange medium flows along the extension direction of the first flow channel section 131 or the second flow channel section 132 to fully contact and exchange heat with the heat sink 163. For example, in Figure 5 In the example, the free end surface of the heat sink 163 is flush with the surface of the first partition 161 on one side facing the main body 15. This is beneficial to the production and processing of the heat exchange plate 16 and improves production efficiency. For example, the first partition may be composed of a plurality of heat sinks 163 connected together, and the second partition 162 may also be composed of a plurality of heat sinks 163 connected together, but is not limited thereto.

[0075] According to some embodiments of the present invention, Figure 2-Figure 7 , a return flow channel 17 is formed between the other end of the first flow channel section 131 and the one end of the second flow channel section 132. The plurality of heat sinks 163 extend into the first flow channel section 131 and the plurality of second flow channel sections 132, respectively, and the return flow channel 17 is located on a side of the plurality of heat sinks 163 away from the heat exchange medium inlet 11. Alternatively, the plurality of heat sinks 163 extend into the first flow channel section 131, the plurality of second flow channel sections 132, and the return flow channel 17, respectively.

[0076] For example, in Figure 2-Figure 4 In the example, two return flow channels 17 are defined in the body 1, and the two return flow channels 17 are respectively formed at both ends of the plurality of heat sinks 163 along the first direction. That is, when the heat exchange medium flows in the first flow channel section 131 and the second flow channel section 132, it contacts the plurality of heat sinks 163, and when the heat exchange medium flows in the return flow channel 17, it contacts the portions of the body 15 and the heat exchange plate 16 where no heat sink 163 is provided (the flow path of the heat exchange medium is as shown in FIG. Figure 4 In this way, the heat exchange medium has a larger flow space and a smaller flow resistance when flowing in the return flow channel 17, which can reduce the pressure drop, and has low requirements on the pressure system of the water pump matched with the heat exchanger 100, which is more conducive to the return of the heat exchange medium, thereby being more conducive to the use of the heat exchanger 100. Under the premise of greatly improving the temperature uniformity, the pressure drop of the present application is kept at the same level as that of the existing radiator.

[0077] For example, in Figure 5-Figure 7In the example, the length of the first partition 161 in the first direction is smaller than the arrangement length of the multiple heat sinks 163 arranged along the first direction, and the multiple heat sinks 163 at both ends of the heat exchange plate 16 along the first direction together with the heat exchange plate 16 and the main body 15 define two return flow channels 17. That is to say, after the heat exchange medium in the first heat exchange flow channel 13 flows out of the first flow channel section 131, it flows back from the gaps between the multiple heat sinks 163 to the corresponding multiple second flow channel sections 132. Therefore, by arranging the positions of the multiple heat sinks 163 at both ends of the heat exchange plate 16 along the first direction, the flow path of the heat exchange medium can be changed, so that the flow direction of the heat exchange medium in the first flow channel section 131 is changed to flow into the second flow channel section 132 (the flow path of the heat exchange medium is as shown in FIG. 1 ). Figure 7 In addition, by forming the return flow channel 17 at a position opposite to the plurality of heat sinks 163, the volume of the main body 15 can be reduced, thereby reducing the volume of the heat exchanger 100, which is beneficial to the installation and use of the heat exchanger 100, and can also ensure the heat exchange performance of the heat exchanger 100. In addition, the pressure drop of the heat exchange medium flow is small, and the flow of the heat exchange medium is smoother.

[0078] According to some embodiments of the present invention, Figure 8-Figure 11 , the heat sink 163 is a heat sink 1631. For example, Figure 2 In the example, one end of the heat dissipation column 1631 is connected to the surface of the heat exchange plate 16, and the other end extends along the thickness direction of the heat exchange plate 16 into the corresponding first heat exchange channel 13 and second heat exchange channel 14. With such a configuration, on the one hand, the structure of the heat dissipation element 163 is simple and convenient for production and processing. On the other hand, it is conducive to the full contact between the heat dissipation element 163 and the heat exchange medium, thereby improving the heat dissipation performance of the heat dissipation element 163. In addition, the use of a columnar heat dissipation element 163 has a small pressure drop, which is conducive to the use of the heat exchanger 100.

[0079] Optionally, combined Figure 8-Figure 11 The cross-sectional shape of the heat sink 163 can be set to be circular, elliptical, oblong or polygonal. Figure 5-Figure 7In the example, the cross-sectional shape of the multiple heat sinks 163 near the two ends of the heat exchange plate 16 in the length direction is set to a circle, that is, the cross-sectional shape of the multiple heat sinks 163 extending into the return flow channel 17 is set to a circle, and the cross-sectional shape of the multiple heat exchangers extending into the first heat exchange flow channel 13 and the second heat exchange flow channel 14 can be set to an ellipse. With such a configuration, the heat sink 163 with an elliptical cross-sectional shape has a good heat dissipation effect, and the heat exchanger 100 has a small pressure drop. The heat sink 163 with a circular cross-sectional shape is easy to arrange, which is conducive to the formation of the return flow channel 17, and is also conducive to the smooth flow of the heat exchange medium in the return flow channel 17, and the flow resistance is also small. Of course, the heat sink 163 can also be set to other shapes according to the use requirements, or it can also be set to a combination of multiple heat sinks 163 with multiple cross-sectional shapes.

[0080] According to some embodiments of the present invention, referring to Fig.12 and Fig.13 The heat sink 163 is a heat sink 1632, one end of the heat sink 163 is located in the first flow channel section 131 and adjacent to the second partition 162, the other end of the heat sink 163 extends around the first partition 161 to the second flow channel section 132 and adjacent to the second partition 162, and multiple heat sinks 163 are arranged at intervals in a direction away from the corresponding first partition 161.

[0081] For example, in Fig.12 and Fig.13 In the example, the shape of the heat sink 163 is roughly "U"-shaped. Taking the multiple heat sinks 163 in the first heat exchange channel 13 as an example, one end of the heat sink 163 is located in the first channel section 131 and close to the left side of the second partition 162. The other end of the heat sink 163 first extends along the first direction, then bends around the free end of the first partition 161 and extends into the second channel section 132, and then extends along the first direction to the left side of the second partition 162 opposite to the second channel section 132. The multiple heat sinks 163 around the same first partition 161 are arranged in sequence from close to the first partition toward the direction away from the first partition 161. The multiple heat sinks 163 extending around the two first partitions 161 are symmetrically arranged about the first direction. The heat exchange medium flowing into the first channel section 131 can flow between any two adjacent heat sinks 163, and then flow into the second channel section 132 along the extension direction of the corresponding heat sink 163 and then flow out through the heat exchange medium outlet 12.

[0082] With such a configuration, the flow of the heat exchange medium in the first heat exchange channel 13 and the second heat exchange channel 14 is more orderly, and the distribution of the heat exchange medium in the first heat exchange channel 13 and the second heat exchange channel 14 (for example, the distribution along the second direction) is more uniform. In addition, the heat sink 163 also defines the extension direction of the return channel 17, and the heat exchange medium in the first channel section 131 can flow smoothly along the extension direction of the heat sink 163 to the corresponding second channel section 132, and the return of the heat exchange medium is smoother, and the flow resistance is also smaller. At the same time, the volume of the heat exchanger 100 can also be set smaller. In addition, the heat sink 1632 is also conducive to the full contact between the heat exchange medium and the heat sink 163, so as to facilitate the full heat exchange of the heat exchanger 100.

[0083] According to some embodiments of the present invention, Figure 1 , the main body 15 and the heat exchange plate 16 are separate structural parts. Such a configuration is conducive to the separate processing of the heat exchange plate 16 and the main body 15, and improves the processing accuracy of the heat exchange plate 16 and the main body 15, thereby improving the processing accuracy of the heat exchanger 100 and extending the performance of the heat exchanger 100. In addition, it is also conducive to the assembly and disassembly of the heat exchanger 100, so as to be more conducive to the use of the heat exchanger 100. For example, the heat exchanger 100 of the present application can be manufactured by CNC processing, stamping molding, die casting molding, etc., and its manufacturing cost is low.

[0084] According to some embodiments of the present invention, referring to Fig.14 The main body 15 includes a base 151 and a partition 152. Specifically, one side of the base 151 is open, and a heat exchange medium inlet 11 and a heat exchange medium outlet 12 are formed on the base 151. The partition 152 is arranged in the base 151, and a connecting inlet 1521 and a plurality of connecting outlets 1522 are formed on the partition 152. The heat exchange plate 16 is arranged on a side of the partition 152 away from the base 151. The first heat exchange channel 13 and the second heat exchange channel 14 are defined between the heat exchange plate 16 and the partition 152. The first heat exchange channel 13 and the second heat exchange channel 14 are connected to the heat exchange medium inlet 11 through the connecting inlet 1521, and the first heat exchange channel 13 and the second heat exchange channel 14 are connected to the heat exchange medium outlet 12 through the plurality of connecting outlets 1522.

[0085] For example, in Fig.14In the example, the heat exchanger 100 is composed of a heat exchange plate 16, a partition 152 and a base 151 from top to bottom. The partition 152 is a substantially flat plate structure, and a connecting inlet 1521 and two connecting outlets 1522 are formed on the partition 152. The heat exchange medium is suitable for flowing between the base 151 and the partition 152 through the heat exchange medium inlet 11 on the base 151, and then flowing into the corresponding first flow channel section 131 of the first heat exchange flow channel 13 and the second heat exchange flow channel 14 through the connecting inlet 1521. The heat exchange medium in the second flow channel section 132 flows between the partition 152 and the base 151 through the corresponding connecting outlet 1522, and then flows out from the heat exchange medium outlet 12. Such a configuration facilitates the separate processing and molding of the heat exchange plate 16, the base 151 and the partition 152, improves the manufacturability of the heat exchange plate 16, the base 151 and the partition 152, and thus improves the manufacturability of the heat exchange plate 16, the base 151 and the partition 152, thereby improving the manufacturability of the heat exchanger 100. In addition, the heat exchanger 100 is convenient to assemble and mold, and the production efficiency is high. In addition, the space between the partition 152 and the base 151 can be used to store heat exchange medium, so as to facilitate the supply of heat exchange medium to the first heat exchange channel 13 and the second heat exchange channel 14, thereby ensuring the normal use of the heat exchanger 100.

[0086] According to some embodiments of the present invention, Fig.14 , the plurality of communication outlets 1522 are respectively located on both sides of the communication inlet 1521 along the second direction, and the plurality of second flow channel sections 132 located on the same side of the first flow channel section 131 along the second direction are connected to the corresponding communication outlets 1522. Fig.14 In the example, two communication outlets 1522 are provided, and the two communication outlets 1522 are respectively located at the front and rear sides of the communication inlet 1521, and the two second flow channel sections 132 located at the rear side of the first flow channel section 131 are communicated with the communication outlet 1522 located at the rear side of the communication inlet 1521, and the two second flow channel sections 132 located at the front side of the first flow channel section 131 are communicated with the communication outlet 1522 located at the front side of the communication inlet 1521. In this configuration, the communication inlet 1521 is located at the center of the partition 152, and the two communication outlets 1522 are located at both sides of the width direction of the communication inlet 1521. The heat exchange medium can flow into the first heat exchange channel 13 and the second heat exchange channel 14 from the center of the partition 152, and then flow out from the communication outlet 1522 close to the edge of the partition 152 in the width direction. When the heat exchanger 100 is used in a power module, the middle of the body 1 of the heat exchanger 100 is the position with the strongest thermal coupling, and the two ends in the length direction and the two sides in the width direction have the lowest thermal coupling effect. Therefore, by setting the heat exchange medium to enter from the middle and exit from the two sides, the thermal coupling effect can be effectively offset to achieve the best heat exchange efficiency. It should be noted that the number and arrangement of the connecting outlets 1522 can be specifically set according to the use requirements to better meet the actual application.

[0087] According to some embodiments of the present invention, referring to Fig.14 and Fig.16 An inlet channel 153 and multiple outlet channels 154 are defined between the partition 152 and the base 151 . The connecting inlet 1521 is connected to the heat exchange medium inlet 11 through the inlet channel 153 , and the multiple connecting outlets 1522 are connected to the heat exchange medium outlet 12 through the multiple outlet channels 154 .

[0088] For example, in Fig.14 In the example, the heat exchange medium inlet 11 and the heat exchange medium outlet 12 are respectively formed on the bottom surface of the base 151, the heat exchange medium inlet 11 and the heat exchange medium outlet 12 are arranged along the first direction, and two outlet flow channels 154 are provided. The heat exchange medium flowing in from the heat exchange medium inlet 11 first flows into the inlet flow channel 153, flows through the connecting inlet 1521 along the extension direction of the inlet flow channel 153 and flows into the first flow channel section 131, and after heat exchange with the heat exchange plate 16, the heat exchange medium flowing out from the second flow channel section 132 is suitable for flowing into the corresponding outlet flow channel 154 through the corresponding connecting outlet 1522, and then the heat exchange medium flowing out from the multiple outlet flow channels 154 converges to the heat exchange medium outlet 12 and then flows out. With such a configuration, the positions of the heat exchange medium inlet 11 and the heat exchange medium outlet 12 may not be specifically limited, as long as the heat exchange medium flows into the inlet flow channel 153 and the heat exchange medium in the outlet flow channel 154 converges to the heat exchange medium outlet 12, which increases the flexibility of the configuration of the heat exchanger 100. The positions of the heat exchange medium inlet 11 and the heat exchange medium outlet 12 may be correspondingly configured according to the use and installation conditions of the heat exchanger 100, so as to facilitate the use of the heat exchanger 100. In addition, the space between the base 151 and the partition 152 may be used to form the inlet flow channel 153 and the outlet flow channel 154, so as to define the flow path of the heat exchange medium, so as to ensure the orderly flow of the heat exchange medium.

[0089] According to some embodiments of the present invention, Fig.14 The inlet channel 153 extends in the first direction. And / or, one end of the outlet channel 154 is connected to the heat exchange medium inlet 11, and the other end of the outlet channel 154 extends in directions away from each other and is connected to the corresponding communication outlets 1522 respectively.

[0090] For example, in Fig.14 In the example, the inlet flow channel 153 extends straightly along the first direction. The end of the outlet flow channel 154 away from the inlet flow channel 153 is connected to the heat exchange medium inlet 11, and the end of the outlet flow channel 154 close to the inlet flow channel 153 is located on both sides of the inlet flow channel 153 along the second direction, so as to be respectively connected to the connecting outlets 1522 on both sides of the connecting inlet 1521. Therefore, it is not only conducive to the smooth flow of the heat exchange medium, but also the structures of the inlet flow channel 153 and the outlet flow channel 154 are simple, which can simplify the structure of the main body 15 and facilitate production and processing.

[0091] According to some embodiments of the utility model, the base 151, the partition 152 and the heat exchange plate 16 are connected as one body. For example, the heat exchange plate 16 can be made by stamping, and the base 151 and the partition 152 can be set as sheet metal parts. After the base 151, the partition 152 and the heat exchange plate 16 are assembled, they can be welded to form an integrated heat exchanger 100. Therefore, the processing method of the heat exchanger 100 is simple, the processing cost is low, and the manufacturability is strong. Moreover, the structural strength of the heat exchanger 100 is strong, which is conducive to the long-term use of the heat exchanger 100.

[0092] According to some optional embodiments of the present invention, referring to Fig.16 The heat exchange medium inlet 11 and the heat exchange medium outlet 12 are respectively located on the two side surfaces of the heat exchanger 100 along the first direction. Fig.16 In the example, the heat exchange medium inlet 11 is located on the left side of the heat exchanger 100, and the heat exchange medium outlet 12 is located on the right side of the heat exchanger 100. The heat exchange medium flowing in from the heat exchange medium outlet 12 flows along the inlet channel 153 to the first heat exchange channel 13 and the second heat exchange channel 14 The corresponding first channel section 131, the heat exchange medium flowing out of the plurality of second channel sections 132 flows through the connecting outlets 1522 located on both sides of the connecting inlet 1521 to the corresponding outlet channel 154. Thus, the positions of the heat exchange medium inlet 11 and the heat exchange medium outlet 12 of the heat exchanger 100 can be flexibly adjusted to meet the requirements of the use and installation position of the heat exchanger 100, which is conducive to installing the heat exchanger 100 at different use positions. It is possible to achieve that the heat exchange medium flows in between the first heat exchange channel 13 and the second heat exchange channel 14, and flows out from both sides of the width direction of the body 1.

[0093] According to some optional embodiments of the utility model, the heat exchanger 100 can be set as a copper part or an aluminum part. For example, when the heat exchanger 100 of the present application adopts a copper part, it can reduce 10°C compared with the existing radiator, and the heat dissipation effect and heat dissipation performance are better. For example, when the heat exchanger 100 adopts a lighter and cheaper aluminum part, it can maintain the same junction temperature as the heat exchanger 100 of the copper part, and the production cost is lower. Of course, the heat exchanger 100 can also be made of other materials to meet the heat exchange performance of the heat exchanger 100 while being more conducive to reducing the production cost of the heat exchanger 100.

[0094] A power module (not shown) according to an embodiment of the second aspect of the utility model comprises the heat exchanger 100 according to the embodiment of the first aspect.

[0095] According to the power module of the embodiment of the utility model, by adopting the above-mentioned heat exchanger 100, the heat exchange effect is good and the heat exchange uniformity is high. The temperature difference between the three phases of the power module can be reduced, and the temperature difference within a single phase can also be reduced to better exert the performance of the power module.

[0096] An electrical device (not shown) according to an embodiment of the third aspect of the utility model comprises a power module according to the embodiment of the second aspect.

[0097] According to the electric equipment of the embodiment of the utility model, by adopting the above-mentioned power module, it is beneficial to use the electric equipment, reduce the impact of uneven heat dissipation and excessive temperature on the electric equipment, and improve the performance of the electric equipment. For example, the electric equipment includes vehicles, aircraft, ships, computers, energy storage cabinets, etc.

[0098] Other structures and operations of the power module and the electrical equipment according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0099] 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 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, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0100] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0101] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A heat exchanger, characterized in that: include: A body, wherein a heat exchange medium inlet, a heat exchange medium outlet, a first heat exchange channel and a second heat exchange channel are formed on the body, the first heat exchange channel and the second heat exchange channel are located on both sides of the heat exchange medium inlet along the first direction, the first heat exchange channel and the second heat exchange channel respectively include a first channel section and a plurality of second channel sections, one end of the first channel section is connected to the heat exchange medium inlet, the first channel section and the plurality of second channel sections all extend along the first direction, the plurality of second channel sections are respectively located on both sides of the first channel section along the second direction, one end of each of the second channel sections is connected to the other end of the first channel section, the other end of each of the second channel sections is connected to the heat exchange medium outlet, and the first direction is perpendicular to the second direction.

2. The heat exchanger according to claim 1, characterized in that: The heat exchange medium inlet is located in the middle of the body along the first direction; The heat exchange medium outlet is disposed adjacent to the heat exchange medium inlet, and the heat exchange medium outlet is located on any one side of the heat exchange medium inlet along the first direction.

3. The heat exchanger according to claim 1, characterized in that: The ends of the first flow channel sections of the first heat exchange channel and the second heat exchange channel that are adjacent to each other are connected to the heat exchange medium inlet, the ends of the first flow channel sections of the first heat exchange channel and the second heat exchange channel that are away from each other are respectively connected to the ends of the corresponding multiple second flow channel sections that are away from the heat exchange medium inlet, and the ends of the multiple second flow channel sections of the first heat exchange channel and the second heat exchange channel that are adjacent to each other are all connected to the heat exchange medium outlet.

4. The heat exchanger according to claim 1, characterized in that: The body comprises: A main body, one side of which is open, and the heat exchange medium inlet and the heat exchange medium outlet are formed on the main body; A heat exchange plate, wherein the heat exchange plate is arranged on the one side of the main body, and the first heat exchange channel and the second heat exchange channel are jointly defined between the heat exchange plate and the main body.

5. The heat exchanger according to claim 4, characterized in that: A plurality of first partitions are provided on a surface of the heat exchange plate on one side facing the main body, the plurality of first partitions extend along the first direction, the plurality of first partitions are arranged at intervals along the second direction, and the plurality of first partitions divide the space between the heat exchange plate and the main body into the first flow channel section and a plurality of second flow channel sections.

6. The heat exchanger according to claim 5, characterized in that A second partition is provided on a surface of the heat exchange plate on one side facing the main body. The second partition extends along the second direction. The second partition intersects with multiple first partitions. The second partition divides the space between the heat exchange plate and the main body into the first heat exchange channel and the second heat exchange channel.

7. The heat exchanger according to claim 6, characterized in that A plurality of heat sinks are disposed on a surface of the heat exchange plate facing the main body, and the plurality of heat sinks extend into the corresponding first heat exchange channel and the second heat exchange channel respectively.

8. The heat exchanger according to claim 7, characterized in that A return flow channel is formed between the other end of the first flow channel section and the one end of the second flow channel section; The plurality of heat sinks extend into the first flow channel section and the plurality of second flow channel sections respectively, and the return flow channel is located at a side of the plurality of heat sinks away from the heat exchange medium inlet; or The plurality of heat sinks extend into the first flow channel section, the plurality of the second flow channel sections and the return flow channel respectively.

9. The heat exchanger according to claim 7, characterized in that: The heat sink is a heat sink column.

10. The heat exchanger according to claim 9, characterized in that The cross-sectional shape of the heat sink is circular, elliptical, oblong or polygonal.

11. The heat exchanger according to claim 7, characterized in that The heat sink is a heat sink. One end of the heat sink is located in the first flow channel section and adjacent to the second partition, and the other end of the heat sink extends around the first partition into the second flow channel section and adjacent to the second partition. Multiple heat sinks are arranged at intervals in a direction away from the corresponding first partition.

12. The heat exchanger according to claim 4, characterized in that The main body and the heat exchange plate are separate structural parts.

13. The heat exchanger according to claim 4, characterized in that The subject includes: A base, one side of the base is open, and the heat exchange medium inlet and the heat exchange medium outlet are formed on the base; A partition, wherein the partition is arranged in the base, and a connecting inlet and a plurality of connecting outlets are formed on the partition, the heat exchange plate is arranged on a side of the partition away from the base, and the first heat exchange channel and the second heat exchange channel are defined between the heat exchange plate and the partition, the first heat exchange channel and the second heat exchange channel are connected to the heat exchange medium inlet through the connecting inlet, and the first heat exchange channel and the second heat exchange channel are connected to the heat exchange medium outlet through a plurality of connecting outlets.

14. The heat exchanger according to claim 13, characterized in that The plurality of communication outlets are respectively located on both sides of the communication inlet along the second direction, and the plurality of second flow channel sections located on the same side of the first flow channel section along the second direction are communicated with the corresponding communication outlets.

15. The heat exchanger according to claim 13, characterized in that An inlet channel and a plurality of outlet channels are defined between the partition plate and the base body. The communication inlet is communicated with the heat exchange medium inlet through the inlet channel, and the plurality of communication outlets are communicated with the heat exchange medium outlets through the plurality of outlet channels, respectively.

16. The heat exchanger according to claim 15, characterized in that The inlet flow channel extends along the first direction; and / or One end of the outlet flow channel is communicated with the heat exchange medium inlet, and the other end of the outlet flow channel extends in directions away from each other and is respectively communicated with the corresponding communication outlets.

17. The heat exchanger according to claim 13, characterized in that The base, the partition and the heat exchange plate are connected as one body.

18. The heat exchanger according to claim 1, characterized in that The heat exchange medium inlet and the heat exchange medium outlet are respectively located on two side surfaces of the heat exchanger along the first direction.

19. The heat exchanger according to any one of claims 1 to 18, characterized in that: The heat exchanger is a copper or aluminum part.

20. A power module, characterized in that: Comprising a heat exchanger according to any one of claims 1-19.

21. An electrical equipment, characterized in that: Comprising a power module according to claim 20.

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