Heat dissipation water channel structure applied to power module

Abstract

The utility model relates to a heat dissipation water channel structure applied to a power module, and the structure comprises a heat dissipation plate, an internal cavity of the heat dissipation plate is provided with a plurality of first fins which are distributed along the long wall side of the cavity at intervals and have the length smaller than that of the wide wall side, the two first fins on the long wall side are alternately arranged, and the ends, away from the connection positions of the first fins and the corresponding long wall side, of the first fins are provided with chamfer angle parts; a main snakelike water flow channel is formed; a fin II parallel to the fin I is arranged in each direct flow part of the main snakelike water flow channel, so that the main snakelike water flow channel is divided into two sub snakelike water flow channels. Through the structural design and layout of the first fins and the second fins, the main snakelike water flow channels and the sub snakelike water flow channels are formed, the heat transfer process of cooling liquid is optimized, the more efficient heat dissipation effect is achieved, fluid resistance is reduced, and the performance stability of the power module is improved. Therefore, the problems of low heat dissipation efficiency and large flow resistance caused by a poor heat dissipation water channel structure of the power module are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy three-electric technologies, and particularly relates to a heat dissipation water channel structure applied to a power module. Background Art

[0002] Power modules are widely used in the new energy field and generate a large amount of heat during operation, which may affect the lifespan of internal components. Therefore, it is necessary to dissipate heat from high-temperature components to ensure the normal operation of the power module and extend its lifespan.

[0003] During the multi-in-one integrated development process, performance indicators such as heat dissipation efficiency and flow resistance often cannot meet the requirements of the whole vehicle. At the same time, the requirements for heat dissipation and flow resistance are different for different vehicle models and different application scenarios. Therefore, it is necessary to decompose layer by layer to improve the efficiency of each module. For a single power module, it is urgently necessary to improve the heat dissipation efficiency and reduce the flow resistance by optimizing the water channel design. Summary of the Utility Model

[0004] The embodiment of the present application provides a heat dissipation water channel structure applied to a power module to solve the problems of low heat dissipation efficiency and large flow resistance caused by the poor heat dissipation water channel structure of a single power module.

[0005] A heat dissipation water channel structure applied to a power module is provided, which includes: a heat dissipation plate, in the internal cavity of which there are a plurality of fins one with lengths less than the width sides and spaced along the long wall side of the cavity, and the fins one on the two long wall sides are alternately arranged. One end of the fin one far from its connection with the corresponding long wall side is provided with an inclined chamfered part to form a main serpentine water flow channel; in each straight part of the main serpentine water flow channel, there is a fin two parallel to the fin one to divide the main serpentine water flow channel into two sub-serpentine water flow channels.

[0006] In some embodiments, an inlet and an outlet communicating with the cooling equipment pipeline are provided on the long wall side of the heat dissipation plate; the inlet and the outlet are correspondingly communicated with the main serpentine water flow channel of the heat dissipation plate.

[0007] In some embodiments, the projection of the fin two corresponding to the inlet on the plane where the end of the inlet is located is located in the middle of the inlet; the projection of the fin two corresponding to the outlet on the plane where the end of the outlet is located is located in the middle of the outlet.

[0008] In some embodiments, one end of the fin two located upstream in the coolant flow direction is provided with an inclined chamfered part; the fin width of the inclined chamfered part gradually increases along the coolant flow direction to form an inclined chamfer.

[0009] In some embodiments, in the direction from the horizontal plane where the inlet is located to the horizontal plane where the outlet is located, the distance between the inclined chamfered part of the fin one and the corresponding long wall side is less than the distance between the corresponding end of the fin two and the long wall side corresponding to the inclined chamfered part of the fin one.

[0010] In some embodiments, the chamfered portions of fin one and fin two are provided with a chamfer on the side close to the wide wall side near the water inlet, and the other side is a flat surface.

[0011] In some embodiments, the chamfered portion is in the shape of a right triangular prism; or, the fin edges of the chamfered portion are arc-shaped.

[0012] In some embodiments, chamfers are provided on both sides of the chamfered portions of fin one and fin two.

[0013] In some embodiments, the chamfered portion is in the shape of a triangular prism; or, the fin edges of the chamfered portion are arc-shaped.

[0014] In some embodiments, a bending reinforcement is provided at the connection between fin one and the corresponding long wall side, and the fin width of the bending reinforcement gradually increases in the direction close to the long wall side; the bending reinforcements of two adjacent fin ones on the same long wall side fit together to form a bending wall.

[0015] The beneficial effects brought by the technical solutions provided in this application include:

[0016] The embodiments of this application provide a heat dissipation water channel structure applied to a power module. Fin one is distributed at intervals along the long wall side of the chamber, with a length shorter than that of the wide wall side, and is alternately arranged on the two long wall sides. The main serpentine water flow channel formed by this design can increase the contact area between the fins and the coolant, promoting the heat dissipation of the coolant. The chamfered portions provided on fin one help to guide the water flow through smoothly and reduce the fluid resistance; in each straight portion of the main serpentine water flow channel, fin two parallel to fin one is added, which can divide the main serpentine water flow channel into two sub-serpentine water flow channels, further increasing the contact area between the coolant and the fins and improving the heat dissipation efficiency. Therefore, through the structural design and layout of fin one and fin two, the main serpentine water flow channel and the sub-serpentine water flow channel are formed, optimizing the coolant heat transfer process, achieving a more efficient heat dissipation effect and reducing the fluid resistance, and improving the performance stability of the power module. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Schematic diagram of the internal structure of the heat dissipation plate on the power module provided by the embodiments of this application;

[0019] Figure 2Schematic diagram of the overall structure of the power module provided by the embodiment of the present application.

[0020] In the figure: 1, heat dissipation plate; 2, first fin; 3, second fin; 4, chamfered corner; 5, water inlet; 6, water outlet; 7, bending reinforcement; 8, bending wall; 9, DC part. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0022] The embodiment of the present application provides a heat dissipation water channel structure applied to a power module, which can solve the problems of low heat dissipation efficiency and large flow resistance caused by the poor heat dissipation water channel structure of a single power module.

[0023] Since performance indicators such as heat dissipation efficiency and fluid resistance cannot meet the vehicle requirements, a heat dissipation water channel structure of a power module that can not only efficiently improve the heat dissipation efficiency but also reduce the fluid resistance is designed. The heat dissipation water channel structure is composed of fins with relatively high heat absorption efficiency as material units. Secondly, the fins are reasonably arranged so that the coolant can contact the fins more reasonably in the heat dissipation water channel, increasing the heat dissipation area and promoting heat absorption. Therefore, a channel similar to a snake shape is designed, and a fin is added in each DC section to divide the channel into two, increasing the contact area between the coolant and the fins without changing the original channel area, and further improving the heat dissipation efficiency. Further, chamfered corners are provided on the fins along the flow direction of the coolant, which can effectively reduce the flow resistance of the coolant, making the entire heat dissipation channel reach the best state and improving the performance stability of the power module.

[0024] Reference Figure 1-2 , a heat dissipation water channel structure applied to a power module, which includes: a heat dissipation plate 1, in the internal cavity of which there are a plurality of first fins 2 with lengths less than the width side and spaced along the long wall side of the cavity, and the first fins 2 on the two long wall sides are alternately arranged. One end of the first fin 2 far from its connection with the corresponding long wall side is provided with a chamfered corner 4 to form a main snake-shaped water flow channel; in each DC part 9 of the main snake-shaped water flow channel, there is a second fin 3 parallel to the first fin 2 to divide the main snake-shaped water flow channel into two sub-snake-shaped water flow channels.

[0025] Through the design of the above-mentioned heat dissipation water channel structure, a more efficient heat dissipation effect is achieved and the fluid resistance is reduced. Among them, the long wall side is the inner wall of the heat dissipation plate 1 in the length direction, and the wide wall side is the inner wall of the heat dissipation plate 1 in the width direction; the first fins 2 are arranged at equal intervals and alternately on both long wall sides, that is, for two adjacent first fins 2, one is located on one long wall side and the other is located on the other long wall side. The length of the first fin 2 is less than the length of the wide wall side, that is, a notch is defined for the coolant to pass through the first fin 2. An inclined chamfer 4 is provided at one end of the first fin 2 away from its connection with the corresponding long wall side, that is, an inclined chamfer 4 is provided on the first fin 2 along the flowing direction of the coolant, which can effectively reduce the flow resistance of the coolant; secondly, a second fin 3 parallel to the first fin 2 is added to each straight section 9 of the main serpentine water flow channel, which can divide the main serpentine water flow channel into two sub-serpentine water flow channels, further increasing the contact area between the coolant and the fins and improving the heat dissipation efficiency. Thus, the problems of low heat dissipation efficiency and large flow resistance caused by the poor heat dissipation water channel structure of a single power module are solved.

[0026] In some preferred embodiments, an inlet 5 and an outlet 6 communicating with the cooling equipment pipeline are provided on the long wall side of the heat dissipation plate 1; the inlet 5 and the outlet 6 are correspondingly communicated with the main serpentine water flow channel of the heat dissipation plate 1. Through this structure, it can be ensured that the coolant smoothly enters the main serpentine water flow channel and passes through the fin structure designed on the heat dissipation plate 1 to achieve effective heat transfer and heat dissipation effect with the heat source. Through this communication design, it can be ensured that the coolant can fully contact the fin structure inside the heat dissipation plate 1 and effectively take away the generated heat, thereby achieving the heat dissipation effect.

[0027] In some preferred embodiments, the projection of the second fin 3 corresponding to the inlet 5 on the plane where the end of the inlet 5 is located is located in the middle of the inlet 5, guiding the coolant evenly into the two sub-serpentine water flow channels; the projection of the second fin 3 corresponding to the outlet 6 on the plane where the end of the outlet 6 is located is located in the middle of the outlet 6, guiding the coolant in the two sub-serpentine water flow channels out of the outlet 6 evenly. In this structure, the second fins 3 located at the inlet 5 and the outlet 6 are designed and placed in the middle of the corresponding inlet 5 and outlet 6, and their function is to guide the coolant evenly into the main serpentine water flow channel and out of the sub-serpentine water flow channel evenly. Through the design and arrangement position of the second fin 3, the uniform flow and distribution of the coolant can be effectively realized, effectively reducing the accumulation and stagnation of the coolant, thereby improving the efficiency and performance of the heat dissipation system. It helps to optimize the heat dissipation effect of the entire heat dissipation system.

[0028] In some preferred embodiments, an end of the second fin 3 located upstream in the coolant flow direction is provided with an inclined chamfer portion 4; the fin width of the inclined chamfer portion 4 gradually increases along the coolant flow direction, forming an inclined chamfer. The design of the inclined chamfer portion 4 is intended to guide the coolant into the heat dissipation channel smoothly, ensure that the coolant can effectively contact the fins, and improve the heat transfer efficiency. It reduces the resistance when the coolant flows through the fins, and at the same time can also reduce the flow turbulence and eddy current, reduce energy loss, and improve the flow efficiency of the coolant in the fins.

[0029] In some preferred embodiments, in the direction from the horizontal plane where the water inlet 5 is located towards the horizontal plane where the water outlet 6 is located, the distance between the inclined chamfer portion 4 of the first fin 2 and the corresponding long wall side is smaller than the distance between the corresponding end of the second fin 3 and the long wall side corresponding to the inclined chamfer portion 4 of the first fin 2. There is a certain fluid resistance when the coolant passes through the curved wall 8 and rushes down to the next straight portion 9. By this distance limitation, it can help optimize the flow path of the water flow, effectively guide the coolant to flow smoothly to the next straight portion 9, can make full use of the design of the inclined chamfer to guide the coolant flow, and effectively reduce the fluid resistance, promoting the overall heat dissipation performance.

[0030] In some preferred embodiments, the inclined chamfer portion 4 of the first fin 2 and the second fin 3 is provided with an inclined chamfer on one side close to the wide wall side of the water inlet 5, and the other side is a plane. Through this structural setting, the inclined chamfer of the inclined chamfer portion is provided on the side close to the wide wall side of the water inlet, which can better guide the coolant flow. The inclined chamfer portion can help accelerate the flow of the coolant between the fins, increase the contact area between the coolant and the fins, and improve the cooling efficiency.

[0031] In some preferred embodiments, the inclined chamfer portion 4 is in the shape of a right-angled triangular prism; or, the fin edge of the inclined chamfer portion 4 is arc-shaped. It should be noted that this design is a further limitation based on the above embodiments. The inclined chamfer portion 4 can be in the shape of a right-angled triangular prism to achieve the design of the inclined chamfer structure; secondly, the inclined chamfer portion 4 can also be in the design form with an arc-shaped fin edge, which can reduce the resistance when the fluid flows through. The arc shape can more smoothly guide the coolant flow, reduce the possibility of generating turbulence, and at the same time reduce the resistance, which helps to improve the energy efficiency of the system.

[0032] In some preferred embodiments, inclined chamfers are provided on both sides of the inclined chamfer portion 4 of the first fin 2 and the second fin 3. This embodiment is an improvement on the above embodiment where an inclined chamfer is provided only on one side. This design can effectively guide the coolant to flow through the fins, improve the heat exchange efficiency, and can reduce the resistance and the possibility of generating turbulence when the fluid flows. By providing inclined chamfers on both sides of the inclined chamfer portion 4, the fluid can pass through the fins more smoothly, further reducing the fluid resistance, increasing the heat exchange surface area, and improving the heat dissipation effect.

[0033] In some preferred embodiments, the chamfered portion 4 is in the shape of a triangular prism; or, the wing edges of the chamfered portion 4 are arc-shaped. It should be noted that this design is a further limitation based on the above embodiments. Compared with the chamfer provided on one side, in this embodiment, chamfers are provided on both sides of the fin, and the structure is optimized and limited. The chamfered portion is in the shape of a triangular prism: this design can achieve the design of the chamfer structure; secondly, the wing edges of the chamfered portion are arc-shaped: the chamfered portion with an arc-shaped design can reduce the resistance of the fluid during the flow process, improve the flow characteristics of the fluid, and thus improve the heat transfer efficiency. The arc-shaped design can also reduce the turbulence generated during the fluid flow process, reduce energy loss, and further improve the heat exchange performance. This design is applicable to occasions where it is required to reduce fluid resistance and improve heat transfer efficiency.

[0034] In some preferred embodiments, a bending reinforcement 7 is provided at the connection between the first fin 2 and the corresponding long wall side, and the fin width of the bending reinforcement 7 gradually increases in the direction close to the long wall side. The bending reinforcements 7 of two adjacent first fins 2 located on the same long wall side fit together to form a bending wall 8. Although the bending reinforcement 7 is provided at the connection between the first fin 2 and the long wall side, and the bending wall 8 formed by two adjacent bending reinforcements 7 reduces the contact area between the coolant and the fin to a certain extent and slightly reduces the heat dissipation function, it effectively reduces the fluid resistance when the coolant enters the next straight portion 9 through the straight portion 9 and improves the overall performance of the heat dissipation structure.

[0035] The present utility model optimizes the heat transfer process of the coolant through the structural design and layout of the fins, realizes a more efficient heat dissipation effect and reduces fluid resistance, thereby improving the performance stability of the power module. Specifically, this design scheme has the following advantages:

[0036] 1. Increase the contact area between the fins and the coolant: The design of the main serpentine water flow channel and the sub-serpentine water flow channel can effectively increase the contact area between the fins and the coolant, improve the heat transfer efficiency, and thus dissipate heat more effectively.

[0037] 2. Reduce fluid resistance: The setting of the chamfered portion 4 of the first fin 2 and the second fin 3 helps to guide the water flow through smoothly, reduce fluid resistance, reduce energy loss, and improve the overall heat dissipation efficiency.

[0038] 3. Improve heat dissipation efficiency: By dividing the main serpentine water flow channel into two sub-serpentine water flow channels and adding the second fin 3 therein, the contact area is further increased, enabling the heat exchange between the coolant and the fins to be more sufficient and improving the heat dissipation efficiency.

[0039] 4. Improve the performance stability of the power module: By optimizing the heat transfer process and reducing fluid resistance, the temperature of the power module can be effectively reduced, its performance stability and reliability can be improved, and its service life can be extended.

[0040] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0041] It should be noted that in the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0042] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A heat dissipation water channel structure applied to a power module, characterized in that It includes: A heat dissipation plate (1) with a plurality of fins one (2) which are less in length than the width side and are spaced along the long wall side of the internal chamber, and the fins one (2) on the two long wall sides are arranged alternately. An inclined chamfer part (4) is provided at one end of the fin one (2) away from its connection with the corresponding long wall side, forming a main serpentine water flow channel; In each direct current part (9) of the main serpentine water flow channel, a fin two (3) parallel to the fin one (2) is provided to divide the main serpentine water flow channel into two sub - serpentine water flow channels.

2. The heat dissipation water channel structure applied to a power module according to claim 1, characterized in that: An inlet (5) and an outlet (6) communicating with the cooling device pipeline are provided on the long wall side of the heat dissipation plate (1); The inlet (5) and the outlet (6) are correspondingly communicated with the main serpentine water flow channel of the heat dissipation plate (1).

3. The heat dissipation water channel structure applied to a power module according to claim 2, characterized in that: The projection of the fin two (3) corresponding to the inlet (5) on the plane where the end of the inlet (5) is located is located in the middle of the inlet (5); The projection of the fin two (3) corresponding to the outlet (6) on the plane where the end of the outlet (6) is located is located in the middle of the outlet (6).

4. The heat dissipation water channel structure applied to a power module according to claim 2, characterized in that: An inclined chamfer part (4) is provided at one end of the fin two (3) located upstream in the coolant flow direction; the fin width of the inclined chamfer part (4) gradually increases along the coolant flow direction, forming an inclined chamfer.

5. The heat dissipation water channel structure applied to a power module according to claim 4, characterized in that: In the direction from the horizontal plane where the inlet (5) is located towards the horizontal plane where the outlet (6) is located, the distance between the inclined chamfer part (4) of the fin one (2) and the corresponding long wall side is less than the distance between the corresponding end of the fin two (3) and the long wall side corresponding to the inclined chamfer part (4) of the fin one (2).

6. The heat dissipation water channel structure applied to a power module according to claim 4, characterized in that: The inclined chamfer part (4) of the fin one (2) and the fin two (3) is provided with an inclined chamfer on the side close to the wide wall side where the inlet (5) is located, and the other side is a plane.

7. The heat dissipation water channel structure applied to a power module according to claim 6, characterized in that: The inclined chamfer part (4) is in the shape of a right - angled triangular prism; or, The fin edge of the inclined chamfer part (4) is arc - shaped.

8. The heat dissipation water channel structure applied to a power module according to claim 4, characterized in that: Both sides of the inclined chamfer part (4) of the fin one (2) and the fin two (3) are provided with the inclined chamfer.

9. The heat dissipation water channel structure applied to a power module according to claim 8, characterized in that: The inclined chamfer part (4) is in the shape of a triangular prism; or, The fin edge of the inclined chamfer part (4) is arc - shaped.

10. The heat dissipation water channel structure applied to a power module according to claim 1, characterized in that: A bending reinforcement member (7) is provided at the connection between the first fin (2) and the corresponding long wall side, and the fin width of the bending reinforcement member (7) gradually increases in the direction close to the long wall side; The bending reinforcement members (7) of two adjacent first fins (2) located on the same long wall side fit together to form a bending wall (8).

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