A cooling plate

Abstract

The application provides a cooling plate, comprising a flow channel, the flow channel comprising a first flow channel and a second flow channel arranged in parallel, the cooling plate having a first flow collecting portion, the first flow channel comprising a first flow collecting channel and a plurality of first sub-flow channels, the second flow channel comprising a plurality of second sub-flow channels, the first sub-flow channels being closer to the first flow collecting portion than the second sub-flow channels, the first flow collecting channel comprising a first section and a second section, the second section being in communication with the first flow collecting portion, and the flow passage cross-sectional area of the first section being smaller than that of the second section; the flow passage cross-sectional area of the first section being limited to be smaller than that of the second section, so that when the medium flows from the second section into the first section, the resistance to which the medium is subjected is increased, the medium is more difficult to flow from the second section into the first section, the amount of the medium flowing into the second flow channel is increased, the uniformity of the distribution of the medium in the flow channel is improved, and the heat exchange performance of the cooling plate is improved.

Description

Technical Field

[0001] This invention relates to the field of thermal management technology, and in particular to a cooling plate for automobiles. Background Technology

[0002] The cooling plate consists of a main channel and multiple branch channels connected to the main channel. The medium first flows into the main channel and then flows into different branch channels. Since the different branch channels are at different distances from the inlet, more medium flows into the branch channels closer to the inlet, causing uneven distribution of the medium among the multiple branch channels of the cooling plate, which in turn affects the heat exchange effect of the cooling plate. Summary of the Invention

[0003] Therefore, it is necessary to provide a cooling plate that improves the distribution of the medium to address the above problems.

[0004] The technical solution adopted in this invention is as follows:

[0005] A cooling plate includes a flow channel comprising a first flow channel and a second flow channel arranged in parallel. The cooling plate has a first confluence portion. The first flow channel includes a first confluence channel and a plurality of first sub-flow channels. The second flow channel includes a plurality of second sub-flow channels. The first sub-flow channels are closer to the first confluence portion than the second sub-flow channels. The first confluence channel includes a first section and a second section. The second section communicates with the first confluence portion. The flow cross-sectional area of ​​the first section is smaller than the flow cross-sectional area of ​​the second section.

[0006] In the above technical solution, the flow cross-sectional area of ​​the first section is limited to be smaller than that of the second section. Since the second section is connected to the first confluence section, the medium flowing from the first confluence section into the first flow channel first enters the first confluence section and then the second section. After flowing through the second section, it enters the first section. Because the flow cross-sectional area of ​​the first section is smaller than that of the second section, the resistance encountered by the medium when it flows from the second section into the first section increases, making it more difficult for the medium to flow from the second section into the first section. This, in turn, makes it more difficult for the medium to flow from the first confluence section into the first flow channel. Compared to the first section having the same flow cross-sectional area as the second section or the first section having a larger flow cross-sectional area than the second section, the smaller flow cross-sectional area of ​​the first section results in more medium flowing into the second flow channel, improving the uniformity of medium distribution in the flow channel and thus improving the heat exchange performance of the cooling plate. Attached Figure Description

[0007] Figure 1 An exploded structural diagram of one embodiment of the cooling plate provided by the present invention;

[0008] Figure 2 for Figure 1A schematic diagram of the structure of the cooling plate from another direction;

[0009] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0010] Figure 4 for Figure 3 A cross-sectional view of the first and second confluence sections.

[0011] Figure 5 for Figure 2 An enlarged structural diagram of the first embodiment at point B;

[0012] Figure 6 for Figure 5 Enlarged structural diagram at point C;

[0013] Figure 7 for Figure 2 An enlarged structural diagram of the second embodiment at point B;

[0014] Figure 8 for Figure 7 Enlarged schematic diagram of the structure at point DD;

[0015] Figure 9 for Figure 2 An enlarged structural diagram of the second embodiment at point B;

[0016] Figure 10 for Figure 9 Enlarged structural diagram of the EE section;

[0017] Figure 11 for Figure 2 Enlarged structural diagram at the FF position;

[0018] Figure 12 for Figure 2 Enlarged schematic diagram of the structure at the middle GG point;

[0019] Figure 13 for Figure 2 Enlarged structural diagram at point II;

[0020] Figure 14 for Figure 2 Enlarged structural diagram at HH;

[0021] Figure 15 This is a schematic diagram of the cooling plate structure in Example 7;

[0022] Figure 16 for Figure 15 Enlarged schematic diagram of the structure at point J;

[0023] Figure 17for Figure 1 A schematic diagram of the structure of the cooling plate from another direction;

[0024] Figure 18 for Figure 17 A magnified schematic diagram of the structure at point K.

[0025] Explanation of reference numerals in the attached figures:

[0026] 11. First plate; 111. First protrusion; 1111. Top; 1112. First recess; 1113. Third base; 112. First base; 12. Second plate; 121. Second base; 122. Second protrusion; 13. Flow channel; 131. First flow channel; 1311. First confluence channel; 13111. First section; 13112. Second section; 1312. First sub-flow channel; 132. Second flow channel; 1321. Second sub-flow channel; 1322. Second confluence channel; 134. Third flow channel; 1341. Third confluence channel; 13411. Third section; 13412. Fourth section; 1342. Third sub-flow channel; 14. First confluence section; 141. First side; 142. Second side; 15. Inlet pipe; 16. Outlet pipe; 17. Second confluence section. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and technical solutions. It should be understood that the specific technical solutions described herein are merely illustrative of the invention and are not intended to limit the invention.

[0028] Please see Figures 1-18 The cooling plate provided by the present invention includes a first plate 11 and a second plate 12 stacked together, with a flow channel 13 between the first plate 11 and the second plate 12. The flow channel 13 includes a first flow channel 131 and a second flow channel 132 arranged in parallel. The cooling plate has a first confluence portion 14, with both the first flow channel 131 and the second flow channel 132 communicating with the first confluence portion 14. The cooling plate includes an inlet pipe 15, with the first confluence portion 14 communicating with the cavity of the inlet pipe 15. The medium flows from the inlet pipe 15 into the cavity of the inlet pipe 15, then into the first confluence portion 14, and flows through the first confluence portion 14 into the cavity of the first confluence portion 15. The medium flows through the first flow channel 131 and the second flow channel 132, carrying away the heat generated by the battery module and thus reducing the temperature of the battery module. It should be noted that the parallel arrangement mentioned here refers to the flow sequence of the medium in the first flow channel 131 and the second flow channel 132 being synchronous, rather than sequential. That is, the medium can flow synchronously in the first flow channel 131 and the second flow channel 132, rather than entering the first flow channel 131 first and then the second flow channel 132, or entering the second flow channel 132 first and then the first flow channel 131.

[0029] The first flow channel 131 includes a first manifold 1311 and a plurality of first sub-flow channels 1312, and the second flow channel 132 includes a plurality of second sub-flow channels 1321. The first sub-flow channels 1312 are closer to the first manifold 14 than the second sub-flow channels 1321. Since the medium first flows into the first manifold 14 and then flows from the first manifold 14 to the first flow channel 131 and the second flow channel 132, and the first sub-flow channels 1312 are closer to the first manifold 14 than the second sub-flow channels 1321, therefore, compared to the second sub-flow channels 1321, the first sub-flow channels 1312 are closer to the first manifold 14. 1321, the medium flows more easily into the first sub-channel 1312, resulting in uneven distribution of the medium in the flow channel 13. The first manifold 1311 includes a first section 13111 and a second section 13112. The second section 13112 is connected to the first manifold 14. The flow cross-sectional area of ​​the first section 13111 is smaller than that of the second section 13112. The second section 13112 is connected to the first manifold 14. The medium flows into the first flow channel 131 from the first manifold 14. The medium first enters the first manifold 14, then the second section 13112, and flows through the second section 13112 before entering the first section 13111. Since the flow cross-sectional area of ​​the first section 13111 is smaller than that of the second section 13112, the resistance encountered by the medium increases when it flows from the second section 13112 into the first section 13111. This makes it more difficult for the medium to flow from the second section 13112 into the first section 13111, thus hindering the flow of the medium from the first manifold 14. It is more difficult to enter the first flow channel 131. Compared with the first section 13111 having the same flow cross-sectional area as the second section 13112, or the first section 13111 having a larger flow cross-sectional area than the second section 13112, the flow cross-sectional area of ​​the first section 13111 is smaller than that of the second section 13112. This results in more medium flowing into the second flow channel 132, improving the uniformity of medium distribution in the flow channel 13, and thus improving the heat exchange performance of the cooling plate.

[0030] In this embodiment, the first flow channel 131 includes a plurality of first sub-flow channels 1312, which are arranged in parallel and connected to the first manifold 1311. The medium first enters the first manifold 1311 in the first flow channel 131, and then enters the plurality of first sub-flow channels 1312. The second flow channel 132 includes a second manifold 1322 and a plurality of second sub-flow channels 1321. The second manifold 1322 is arranged in parallel with the first manifold 1311 and is connected to the first manifold section 14. The plurality of second sub-flow channels 1321 are arranged in parallel and connected to the second manifold 1322. The medium first enters the second manifold 1322 in the second flow channel 132, and then enters the plurality of second sub-flow channels 1321. Since the flow cross-sectional area of ​​the first section 13111 is smaller than that of the second section 13112, eddies are generated when the medium flows from the second section 13112 to the first section 13111 and flows in the first section 13111. Since there is less or no coolant in the area where eddies are generated, the heat exchange effect in the area where eddies are generated is poor. In this embodiment, since the first confluence channel 1311 includes the first section 13111, that is, the position where the flow cross-sectional area of ​​the flow channel 13 is reduced is located in the first confluence channel 1311. Compared with setting the position where the flow cross-sectional area is reduced in the first sub-flow channel 1312, setting the position where the flow cross-sectional area is reduced in the first confluence channel 1311 reduces the area where eddies are generated, reduces the heat exchange area with poor heat exchange effect, and thus improves the heat exchange effect.

[0031] In this embodiment, the cooling plate includes an outlet pipe 16 and a second confluence 17. The second confluence 17 is connected to the cavity of the outlet pipe 16. The first flow channel 131 and the second flow channel 132 are both connected to the second confluence 17. The medium flows from the inlet pipe 15 into the cavity of the inlet pipe 15, then into the first confluence 14, and flows into the first flow channel 131 and the second flow channel 132 through the first confluence 14. Then it flows out from the first flow channel 131 and the second flow channel 132 and into the second confluence 17. From the second confluence 17, it flows into the cavity of the outlet pipe 16. The medium flows in the first flow channel 131 and the second flow channel 132 and carries away the heat generated by the battery module, thereby achieving the effect of reducing the temperature of the battery module.

[0032] The following section focuses on the improvements made to the structure of the first section 13111, and will be explained in detail with reference to the accompanying drawings.

[0033] Example 1

[0034] Please refer to Figures 1-6The first embodiment shown specifically discloses a first plate 11 including a first protrusion 111 and a first base 112. Along the stacking direction of the first plate 11 and the second plate 12, the first protrusion 111 protrudes away from the second plate 12 relative to the first base 112. The second plate 12 includes a second base 121. Since the first protrusion 111 protrudes away from the second plate 12, there is a gap between the first protrusion 111 and the second base 121 to accommodate the medium. That is, the first protrusion 111 and the second base 121 form a first segment 13111, in which the medium flows. The flow occurs in the gap between the two bases 121, thus forming the wall of the first segment 13111, which includes the wall of the first protrusion 111 and the wall of the second base 121. Since the first protrusion 111 and the second base 121 enclose the first segment 13111, the wall of the first segment 13111 is formed along the width direction of the first segment 13111 as the wall of the first protrusion 111. In this embodiment, along the width direction of the first segment 13111, the wall of the first protrusion 111 protrudes inward from the first protrusion 111. Since the wall of the first protrusion 111 protrudes inward from the first protrusion 111, and the first protrusion 111 and the second base 121... The first section 13111 is formed by 121. Therefore, the wall of the first protrusion 111 protrudes inwards, reducing the flow cross-sectional area of ​​the first section 13111. This results in the flow cross-sectional area of ​​the first section 13111 being smaller than that of the second section 13112. Because the flow cross-sectional area of ​​the first section 13111 is smaller than that of the second section 13112, the resistance encountered by the medium when flowing from the second section 13112 into the first section 13111 increases, making it more difficult for the medium to flow from the second section 13112 into the first section 13111. This further reduces the flow of the medium from the first confluence section 14 into the second section 13111. The flow channel 131 is more difficult to construct. Compared to the first section 13111 having the same flow cross-sectional area as the second section 13112, or the first section 13111 having a larger flow cross-sectional area than the second section 13112, in this embodiment, the wall of the first protrusion 111 protrudes inward to reduce the flow cross-sectional area of ​​the first section 13111, thereby making the flow cross-sectional area of ​​the first section 13111 smaller than that of the second section 13112. This allows more medium to flow into the second flow channel 132, improving the uniformity of medium distribution in the flow channel 13, and thus improving the heat exchange performance of the cooling plate.

[0035] Example 2

[0036] Please refer to Figure 7 , Figure 8The second embodiment shown in this embodiment specifically discloses that the first plate 11 includes a first protrusion 111 and a first base 112. Along the stacking direction of the first plate 11 and the second plate 12, the first protrusion 111 protrudes away from the second plate 12 relative to the first base 112. The second plate 12 includes a second base 121. Since the first protrusion 111 protrudes away from the second plate 12, there is a gap between the first protrusion 111 and the second base 121 to accommodate the medium. That is, the first protrusion 111 and the second base 121 form a first segment 13111, and the medium flows in the first segment 13111. The flow occurs in the gap between the two parts, thus forming the wall portion of the first segment 13111, which includes the wall portion of the first protrusion 111 and the wall portion of the second base 121. In this embodiment, the first protrusion 111 includes a top 1111, which includes a first recess 1112 and a third base 1113. Along the stacking direction of the first plate 11 and the second plate 12, the first recess 1112 is recessed relative to the third base 1113 towards the second plate 12. The wall portion forming the first segment 13111 includes the wall portion of the first recess 1112. Since the wall portion forming the first segment 13111 includes the wall portion of the first protrusion 111 and the wall portion of the second base 121, in this embodiment, the first... The recess 1112 is recessed towards the second plate 12. This recess reduces the gap between the first protrusion 111 and the second base 121, thus reducing the flow cross-sectional area of ​​the first section 13111. Consequently, the flow cross-sectional area of ​​the first section 13111 is smaller than that of the second section 13112. Because the flow cross-sectional area of ​​the first section 13111 is smaller than that of the second section 13112, the resistance encountered by the medium when flowing from the second section 13112 into the first section 13111 increases, making it more difficult for the medium to flow from the second section 13112 into the first section 13111. This further reduces the flow of the medium from the first confluence... It is more difficult for the medium to flow into the first flow channel 131 at part 14. Compared with the first section 13111 having the same flow cross-sectional area as the second section 13112, or the first section 13111 having a larger flow cross-sectional area than the second section 13112, in this embodiment, the wall of the first protrusion 111 protrudes inward to reduce the flow cross-sectional area of ​​the first section 13111, thereby making the flow cross-sectional area of ​​the first section 13111 smaller than that of the second section 13112. This allows more medium to flow into the second flow channel 132, improving the uniformity of medium distribution in the flow channel 13, and thus improving the heat exchange performance of the cooling plate.

[0037] Example 3

[0038] Please refer to Figure 9 , Figure 10The third embodiment shown in this embodiment specifically discloses that the first plate 11 includes a first protrusion 111 and a first base 112. Along the stacking direction of the first plate 11 and the second plate 12, the first protrusion 111 protrudes away from the second plate 12 relative to the first base 112. Since the first protrusion 111 protrudes away from the second plate 12, there is a gap between the first protrusion 111 and the second plate 12 to accommodate the medium. That is, the first protrusion 111 and the second plate 12 form a first segment 13111, in which the medium flows, i.e., in the gap between the first protrusion 111 and the second plate 12. The second plate 12 includes a second protrusion 122 and a second base 121. Along the stacking direction of the first plate 11 and the second plate 12, the second protrusion 122 protrudes towards the first plate 11 relative to the second base 121. A first surface is defined that is perpendicular to the stacking direction of the first plate 11 and the second plate 12. The orthographic projection of the first protrusion 122 on the first surface at least partially coincides with the orthographic projection of the second protrusion 122 on the first surface. Since the orthographic projections of the first protrusion 121 and the second protrusion 122 at least partially coincide, and the second protrusion 122 protrudes towards the first plate 11, the second protrusion 122 reduces the size of the first protrusion. The gap between plate 111 and plate 12, i.e., the second protrusion 122, reduces the flow cross-sectional area of ​​the first section 13111, making the flow cross-sectional area of ​​the first section 13111 smaller than that of the second section 13112. Because the flow cross-sectional area of ​​the first section 13111 is smaller than that of the second section 13112, the resistance encountered by the medium when flowing from the second section 13112 into the first section 13111 increases, making it more difficult for the medium to flow from the second section 13112 into the first section 13111. This, in turn, makes it more difficult for the medium to flow from the first confluence section 14 into the first flow channel 131. Compared to situations where the flow cross-sectional area of ​​the first section 13111 is the same as or the flow cross-sectional area of ​​the second section 13112 is larger than that of the second section 13112, in this embodiment, the wall of the first protrusion 111 protrudes inward to reduce the flow cross-sectional area of ​​the first section 13111, thereby making the flow cross-sectional area of ​​the first section 13111 smaller than that of the second section 13112. This allows more medium to flow into the second flow channel 132, improving the uniformity of medium distribution in the flow channel 13, and thus improving the heat exchange performance of the cooling plate.

[0039] The following section focuses on the improvements made to the structure of the flow channel 13, which will be explained in detail with reference to the accompanying drawings.

[0040] Example 4

[0041] Please refer to Figures 1-4 , Figure 11 , Figure 12The fourth embodiment shown in this embodiment specifically discloses that the first plate 11 includes a first protrusion 111 and a first base 112. Along the stacking direction of the first plate 11 and the second plate 12, the first protrusion 111 protrudes away from the second plate 12 relative to the first base 112. The second plate 12 includes a second base 121. Since the first protrusion 111 protrudes away from the second plate 12, there is a gap between the first protrusion 111 and the second base 121 to accommodate the medium. That is, the first protrusion 111 and the second base 121 form a flow channel 13, in which the medium flows. The flow occurs in the gap between the first plate 11 and the second base 121, forming the walls of the first flow channel 131 and the second flow channel 132, including the walls of the first protrusion 111 and the second base 121. The first protrusion 111 includes a top 1111. Along the stacking direction of the first plate 11 and the second plate 12, the distance between the top 1111 at the first sub-flow channel 1312 and the second base 121 is d1, and the distance between the top 1111 at the first confluence channel 1311 and the second base 121 is D1, where d1 < D1. Since the distance between the top 1111 at the first sub-flow channel 1312 and the second base 121 is less than... The distance between the top 1111 of the first manifold 1311 and the second base 121 is equal to or greater than the distance between the top 1111 of the first sub-channel 1312 and the second base 121, where d1 < D1. This allows the medium to enter the first sub-channel 1312, increasing the medium velocity and thus improving the heat exchange effect and the heat exchange performance of the cooling plate. The distance between the top 1111 of the second sub-channel 1321 and the second base 121 is d2. The distance between the top 1111 of the second manifold 1322 and the second base 121 is d2. The distance between the bases 121 is D2, d2 < D2. Since the distance between the top 1111 of the second sub-channel 1321 and the second base 121 is less than the distance between the top 1111 of the second confluence channel 1322 and the second base 121, compared to the distance between the top 1111 of the second sub-channel 1321 and the second base 121 being equal to or greater than the distance between the top 1111 of the second confluence channel 1322 and the second base 121, d2 < D2 causes the medium to enter the second sub-channel 1321, increasing the flow rate of the medium, thereby increasing the heat exchange effect and improving the heat exchange performance of the cooling plate.

[0042] In this embodiment, the distance between the top 1111 of the first sub-channel 1312 and the second base 121 is less than the distance between the top 1111 of the first confluence channel 1311 and the second base 121, and the distance between the top 1111 of the second sub-channel 1321 and the second base 121 is less than the distance between the top 1111 of the second confluence channel 1322 and the second base 121. In other embodiments, only the distance between the top 1111 of the first sub-channel 1312 and the second base 121 may be less than the distance between the top 1111 of the first confluence channel 1311 and the second base 121, or only the distance between the top 1111 of the second sub-channel 1321 and the second base 121 may be less than the distance between the top 1111 of the second confluence channel 1322 and the second base 121.

[0043] Example 5

[0044] Please refer to Figures 1-4 , Figure 13The fifth embodiment shown is based on the previous embodiment. Specifically, it defines the side of the cooling plate closest to the first junction 14 as the first side 141, and the other side of the cooling plate as the second side 142. The direction from the second side 142 to the first side 141 is defined as the first direction. Along the first direction, the first sub-channel 1312 is closer to the first junction 14 than the second sub-channel 1321. Because the first sub-channel 1312 is closer to the first junction 14 than the second sub-channel 1321 along the first direction... Therefore, compared to the second sub-channel 1321, the medium flows more easily into the first sub-channel 1312, resulting in uneven distribution of the medium in the flow channel 13. The first protrusion 111 includes a top 1111. Along the stacking direction of the first plate 11 and the second plate 12, the distance between the top 1111 and the second base 121 at the first sub-channel 1312 is d1, and the distance between the top 1111 and the second base 121 at the second sub-channel 1321 is d2, where d1 < d2. The smaller the distance between the top 1111 and the second base 121 at location 1312 or the second sub-channel 1321, the greater the resistance encountered by the medium when flowing into the first sub-channel 1312 or the second sub-channel 1321. In this embodiment, the distance between the top 1111 and the second base 121 at the first sub-channel 1312 is smaller than the distance between the top 1111 and the second base 121 at the second sub-channel 1321. Compared to the distance between the top 1111 and the second base 121 at the first sub-channel 1312, the resistance encountered by the medium when flowing into the first sub-channel 1312 or the second sub-channel 1321 is greater. The distance between the second bases 121 is greater than or equal to the distance between the top 1111 of the second sub-channel 1321 and the second base 121. The distance between the top 1111 of the first sub-channel 1312 and the second base 121 is less than the distance between the top 1111 of the second sub-channel 1321 and the second base 121. This increases the resistance to the flow of the medium into the first sub-channel 1312, resulting in more medium flowing into the second sub-channel 1321, thereby improving the distributability of the medium.

[0045] Example 6

[0046] Please refer to Figures 1-4 , Figure 14The sixth embodiment shown is based on the above embodiments. Specifically, it defines the side of the cooling plate closest to the first manifold 14 as the first side 141, the other side of the cooling plate as the second side 142, and the direction from the second side 142 to the first side 141 as the first direction. Along the first direction, multiple first sub-channels 1312 are arranged in parallel. Since all the multiple first sub-channels 1312 are connected to the first manifold 1311, and the multiple first sub-channels 1312 are arranged in parallel along the first direction, the medium flows more easily into the first sub-channel 1312 closer to the first manifold 14 compared to the first sub-channel 1312 farther from the first manifold 14. The first sub-channel 1312 of the manifold 14 causes uneven distribution of the medium in the flow channel 13. Therefore, along the first direction, the distance between the top 1111 and the second base 121 of the first sub-channel 1312 near the first manifold 14 is small. This reduced distance increases the resistance encountered by the medium when flowing into the first sub-channel 1312. Therefore, the first sub-channel 1312 near the first manifold 14 is designed to have a smaller distance between its top 1111 and the second base 121 along the first direction, thus reducing the resistance to flow away from the first sub-channel 1312. The increased medium in the first sub-channel 1312 of the manifold 14 improves the uniformity of medium distribution and thus enhances the heat exchange performance of the cooling plate. Along the first direction, multiple second sub-channels 1321 are arranged in parallel. Since all the second sub-channels 1321 are connected to the second manifold 1322, and these multiple second sub-channels 1321 are arranged in parallel along the first direction, the medium flows more easily into the second sub-channels 1321 closer to the first manifold 14 compared to the second sub-channels 1321 farther from the first manifold 14. This results in uneven distribution of the medium in the flow channel 13. Therefore, along the first direction, the medium closer to the first manifold 14... The distance between the top 1111 and the second base 121 of the second sub-channel 1321 of the first confluence 14 is small, and the resistance encountered by the medium when flowing into the second sub-channel 1321 is increased. Therefore, the distance between the top 1111 and the second base 121 of the second sub-channel 1321 near the first confluence 14 is small along the first direction, which increases the amount of medium flowing into the second sub-channel 1321 away from the first confluence 14, thereby improving the uniformity of medium distribution and improving the heat exchange performance of the cooling plate.

[0047] Example 7

[0048] Please refer to Figure 15 , Figure 16The seventh embodiment shown is based on the above embodiments and specifically discloses that the side of the cooling plate near the first confluence portion 14 is defined as the first side 141, the other side of the cooling plate is defined as the second side 142, the direction from the second side 142 to the first side 141 is defined as the first direction, the flow channel 13 includes a third flow channel 134 arranged in parallel with the first flow channel 131 and the second flow channel 132, the third flow channel 134 includes a third confluence channel 1341 and a third sub-flow channel 1342, the third confluence channel 1341 is connected to the first confluence portion 14, the third sub-flow channel 1342 is connected to the third confluence channel 1341, and the first confluence channel 1311... At least a portion of the second flow channel 1322 extends along a first direction, and the first sub-flow channel 1312 extends along a direction perpendicular to the first direction. The medium flows from the inlet pipe 15 into the cavity of the inlet pipe 15, then into the first manifold 14, and through the first manifold 14 into the first manifold 1311. It flows along the first direction in the first manifold 1311, and then into the first sub-flow channel 1312, flowing along a direction perpendicular to the first direction. The medium flowing in the first flow channel 1311 carries away the heat generated by the battery module, thereby reducing the temperature of the battery module. At least a portion of the second flow channel 1322 extends along the first direction, and the second sub-flow channel 1321 extends along a direction perpendicular to the first direction. Extending in the first direction, the medium flows from the inlet pipe 15 into the cavity of the inlet pipe 15 and then into the first manifold 14, and flows through the first manifold 14 into the second manifold 1322, where it flows in the first direction. Then it enters the second sub-channel 1321 and flows in a direction perpendicular to the first direction. The medium flowing in the second channel 132 carries away the heat generated by the battery module, thereby reducing the temperature of the battery module. At least a portion of the third manifold 1341 extends in the first direction, and the third sub-channel 1342 extends in a direction perpendicular to the first direction. The medium flows from the inlet pipe 15 into the inlet pipe 1... The medium flows through the cavity of the 5th tube, then into the first manifold 14, and through the first manifold 14 into the third manifold 1341, where it flows in the first direction. Then it flows into the third sub-channel 1342 in a direction perpendicular to the first direction. The medium flows in the third sub-channel 134 and carries away the heat generated by the battery module, thereby achieving the effect of reducing the temperature of the battery module. Along the first direction, the first sub-channel 1312 is located on one side of the second sub-channel 1321, and the third sub-channel 1342 is located on the other side of the second sub-channel 1321. The first sub-channel 1312 is closer to the first manifold 14 than the second sub-channel 1321.

[0049] Furthermore, the second manifold 1322 includes a third section 13411 and a fourth section 13412. Along the first direction, the fourth section 13412 is closer to the first manifold 14 than the third section 13411. Therefore, compared to the third section 13411, the medium flows more easily into the fourth section 13412, resulting in uneven distribution of the medium in the flow channel 13. Therefore, the flow cross-sectional area of ​​the third section 13411 is set to be larger than that of the fourth section 13412, so that the amount of medium entering the third section 13411 increases, thereby improving the distribution of the medium and improving the heat exchange performance of the cooling plate.

[0050] The technical features of the above-described technical solutions can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above-described technical solutions are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-described technical solutions merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications without departing from the concept of the present invention, and these modifications all fall within the protection scope of the present invention.

Claims

1. A cooling plate, characterized in that, The cooling plate includes a flow channel (13), which includes a first flow channel (131) and a second flow channel (132) arranged in parallel. The cooling plate has a first confluence portion (14). The first flow channel (131) includes a first confluence channel (1311) and a plurality of first sub-flow channels (1312). The second flow channel (132) includes a plurality of second sub-flow channels (1321). The first sub-flow channels (1312) are closer to the first confluence portion (14) than the second sub-flow channels (1321). The first confluence channel (1311) includes a first section (13111) and a second section (13112). The second section (13112) is connected to the first confluence portion (14). The flow cross-sectional area of ​​the first section (13111) is smaller than the flow cross-sectional area of ​​the second section (13112).

2. The cooling plate according to claim 1, characterized in that, The system includes a first plate (11) and a second plate (12) stacked together, with the flow channel (13) between the first plate (11) and the second plate (12). The first plate (11) includes a first protrusion (111) and a first base (112). Along the stacking direction of the first plate (11) and the second plate (12), the first protrusion (111) protrudes away from the second plate (12) relative to the first base (112). The second plate (12) includes a second base (121). The wall portion forming the first segment (13111) includes the wall portion of the first protrusion (111) and the wall portion of the second base (121). Along the width direction of the first segment (13111), the wall portion of the first segment (13111) is formed as the wall portion of the first protrusion (111), and along the width direction of the first segment (13111), the wall portion of the first protrusion (111) protrudes inward to the first protrusion (111).

3. The cooling plate according to claim 1, characterized in that, The system includes a first plate (11) and a second plate (12) stacked together, with the flow channel (13) between the first plate (11) and the second plate (12). The first plate (11) includes a first protrusion (111) and a first base (112). Along the stacking direction of the first plate (11) and the second plate (12), the first protrusion (111) protrudes away from the second plate (12) relative to the first base (112). The second plate (12) includes a second base (121). The wall portion forming the first segment (13111) includes the wall portion of the first protrusion (111) and the wall portion of the second base (121). The first protrusion (111) includes a top (1111), the top (1111) includes a first recess (1112) and a third base (1113). Along the stacking direction of the first plate (11) and the second plate (12), the first recess (1112) is recessed relative to the third base (1113) towards the second plate (12), and the wall portion forming the first segment (13111) includes the wall portion of the first recess (1112).

4. The cooling plate according to claim 1, characterized in that, The system includes a first plate (11) and a second plate (12) stacked together, with the flow channel (13) between the first plate (11) and the second plate (12). The first plate (11) includes a first protrusion (111) and a first base (112). Along the stacking direction of the first plate (11) and the second plate (12), the first protrusion (111) protrudes away from the second plate (12) relative to the first base (112). The second plate (12) includes a second protrusion (122) and a second base (121). Along the stacking direction of the first plate (11) and the second plate (12), the second protrusion (122) protrudes towards the first plate (11) relative to the second base (121). A first surface is defined perpendicular to the stacking direction of the first plate (11) and the second plate (12). The orthographic projection of the first protrusion (111) on the first surface and the orthographic projection of the second protrusion (122) on the first surface at least partially coincide.

5. The cooling plate according to any one of claims 1-4, characterized in that, The system includes a first plate (11) and a second plate (12) stacked together, with a flow channel (13) between the first plate (11) and the second plate (12). A plurality of first sub-flow channels (1312) are arranged in parallel and are connected to the first confluence channel (1311). The second flow channel (132) includes a second confluence channel (1322). A plurality of second sub-flow channels (1321) are arranged in parallel and are connected to the first confluence channel (1311). The second confluence channel (1322) is connected to the first confluence section (14). A plurality of second sub-flow channels (1321) are arranged in parallel and are connected to the second confluence channel (1322).

6. The cooling plate according to claim 5, characterized in that, The first plate (11) includes a first protrusion (111) and a first base (112). Along the stacking direction of the first plate (11) and the second plate (12), the first protrusion (111) protrudes away from the second plate (12) relative to the first base (112). The second plate (12) includes a second base (121). The wall portion forming the first flow channel (131) and the second flow channel (132) includes the wall portion of the first protrusion (111) and the wall portion of the second base (121). The first protrusion (111) includes a top (1111). Along the stacking direction of the first plate (11) and the second plate (12), the distance between the top (1111) at the first sub-channel (1312) and the second base (121) is d1, the distance between the top (1111) at the first confluence channel (1311) and the second base (121) is D1, d1 < D1, and / or, the distance between the top (1111) at the second sub-channel (1321) and the second base (121) is d2, and the distance between the top (1111) at the second confluence channel (1322) and the second base (121) is D2, d2 < D2.

7. The cooling plate according to claim 5 or 6, characterized in that, The side of the cooling plate near the first confluence portion (14) is defined as the first side (141), and the other side of the cooling plate relative to the first side (141) is defined as the second side (142). The direction from the second side (142) to the first side (141) is defined as the first direction. The first plate (11) includes a first protrusion (111) and a first base (112). Along the stacking direction of the first plate (11) and the second plate (12), the first protrusion (111) protrudes away from the second plate (12) relative to the first base (112). The second plate (12) includes a second base (121). The wall portion forming the first flow channel (131) and the second flow channel (132) includes the wall portion of the first protrusion (111) and the wall portion of the second base (121). Along the first direction, the first sub-flow channel (1312) is closer to the first confluence portion (14) than the second sub-flow channel (1321). The first protrusion (111) includes a top (1111). Along the stacking direction of the first plate (11) and the second plate (12), the distance between the top (1111) at the first sub-channel (1312) and the second base (121) is d1, and the distance between the top (1111) at the second sub-channel (1321) and the second base (121) is d2, where d1 < d2.

8. The cooling plate according to claim 6 or 7, characterized in that, The side of the cooling plate near the first confluence portion (14) is defined as the first side (141), and the other side of the cooling plate relative to the first side (141) is defined as the second side (142). The direction from the second side (142) to the first side (141) is defined as the first direction. Along the first direction, a plurality of first sub-channels (1312) are arranged in parallel. Along the first direction, the distance between the top (1111) of the first sub-channel (1312) near the first confluence portion (14) and the second base (121) is small. And / or, along the first direction, a plurality of second sub-channels (1321) are arranged in parallel. Along the first direction, the distance between the top (1111) of the second sub-channel (1321) near the first confluence portion (14) and the second base (121) is small.

9. The cooling plate according to any one of claims 5-8, characterized in that, The side of the cooling plate near the first confluence portion (14) is defined as the first side (141), and the other side of the cooling plate relative to the first side (141) is defined as the second side (142). The direction from the second side (142) to the first side (141) is defined as the first direction. The flow channel (13) includes a third flow channel (134) arranged in parallel with the first flow channel (131) and the second flow channel (132). The third flow channel (134) includes a third confluence channel (1341) and a third sub-flow channel (1342). At least a portion of the first confluence channel (1311) extends along the first direction, and the first sub-flow channel (1312) extends along a direction perpendicular to the first direction. The direction extends in the first direction, at least a portion of the second manifold (1322) extends along the first direction, the second sub-channel (1321) extends along a direction perpendicular to the first direction, at least a portion of the third manifold (1341) extends along the first direction, the third sub-channel (1342) extends along a direction perpendicular to the first direction, along the first direction, the first sub-channel (1312) is located on one side of the third sub-channel (1342), the second sub-channel (1321) is located on the other side of the third sub-channel (1342), and the first sub-channel (1312) is closer to the first manifold (14) than the third sub-channel (1342).

10. The cooling plate according to claim 9, characterized in that, The second manifold (1322) includes a third section (13411) and a fourth section (13412). Along the first direction, the fourth section (13412) is closer to the first manifold (14) than the third section (13411). The flow cross-sectional area of ​​the third section (13411) is larger than the flow cross-sectional area of ​​the fourth section (13412).

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