Heat dissipation structure for automobile electric cabinet shell

Abstract

The utility model discloses a heat dissipation structure for an automobile electric cabinet shell, which comprises a shell and an upward heat dissipation cavity concavely arranged on the lower end face of the shell, a plurality of downwards concavely arranged connecting parts are arranged on the upper end face of the heat dissipation cavity, a heat conduction plate is arranged at the upper end of the heat dissipation cavity, and the upper end of the heat conduction plate extends into an inner cavity of the shell. A plurality of inserting parts which are inserted into the connecting parts are arranged at the lower end; a detachable sealing plate is arranged at the lower end of the heat dissipation cavity. Due to the fact that the heat dissipation cavity is integrally formed in the lower end face of the shell, and the connecting part is integrally formed in the upper end face of the heat dissipation cavity, the mechanical strength of the shell is not affected by the arrangement of the heat dissipation cavity, in addition, due to the arrangement of the connecting part, liquid flowing in the heat dissipation cavity is shielded to a certain degree, and the flow direction of water flow is guided. And the heat conduction plate placed at the upper end of the heat dissipation cavity can be cooled through contact between the liquid and the connecting part, so that the heat dissipation effect of the heat dissipation cavity on the element placed in the inner cavity of the shell is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of electrical control box housing technology, and in particular to a heat dissipation structure for automotive electrical control box housing. Background Technology

[0002] To meet the lightweight requirements, the outer shell of the electrical control box in new energy vehicles generally adopts a thin-walled die-cast structure. It needs to provide mechanical support for components such as PCB and power modules, and also integrate a cooling system to cope with the high heat load under high current conditions.

[0003] Existing technologies mainly achieve liquid cooling by opening a built-in cooling cavity in the outer casing. However, the location of the cooling cavity and the degree of contact with the components placed inside the casing are often difficult to control, resulting in reduced heat dissipation and casing strength. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a heat dissipation structure for the housing of an automotive electronic control box. It solves the problem that the existing technology mainly achieves liquid cooling by opening an internal cooling cavity in the housing body, but the location of the cooling cavity and the degree of contact with the components placed inside the housing are often uncontrollable, resulting in reduced heat dissipation effect and reduced housing strength.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a heat dissipation structure for an automotive electronic control box housing, comprising a housing and a heat dissipation cavity recessed on the lower end face of the housing and facing upward, the upper end face of the heat dissipation cavity being provided with a plurality of downwardly recessed connecting portions, the upper end of the heat dissipation cavity being provided with a heat-conducting plate, the upper end of the heat-conducting plate extending into the inner cavity of the housing, and the lower end being provided with a plurality of insertion portions inserted into the connecting portions; the lower end of the heat dissipation cavity being provided with a detachable sealing plate.

[0006] Furthermore, there is a first gap between the lower end of the connecting part and the upper end of the sealing plate.

[0007] Furthermore, one side wall of the housing is provided with an inlet portion and an outlet portion that communicate with the heat dissipation cavity.

[0008] Furthermore, the heat dissipation cavity includes a first part corresponding to the inlet and a second part corresponding to the outlet, with a partition between the first part and the second part to keep the connecting portion of the first part and the second part away from the inlet and outlet.

[0009] Furthermore, the first part is divided into a first channel that communicates with the second part and a second channel that extends toward the side wall of the shell, with the second channel being adjacent to the inlet part.

[0010] Furthermore, the connecting part includes multiple sets of first strips spaced apart within the second channel. Each set of first strips includes three transverse strips and one longitudinal strip. The longitudinal strip is located at the end of the three transverse strips away from the side wall of the second channel, and one of the three transverse strips in the middle is connected to one side wall of the second channel.

[0011] Furthermore, the length of the three transverse bars at the end adjacent to the longitudinal bar can be increased or decreased adaptively according to the fluid direction.

[0012] Furthermore, the connecting part also includes a second strip disposed in the first channel and a third strip disposed in the second part, wherein the second strip is a long strip disposed in the middle of the first channel.

[0013] Furthermore, the third strip consists of multiple separate longitudinal strips.

[0014] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, since the heat dissipation cavity is integrally formed on the lower end face of the shell and the connecting part is integrally formed on the upper end face of the heat dissipation cavity, the opening of the heat dissipation cavity does not affect the mechanical strength of the shell itself. In addition, due to the setting of the connecting part, while blocking and guiding the flow of liquid in the heat dissipation cavity to a certain extent, it can also dissipate heat from the heat-conducting plate placed on the upper end of the heat dissipation cavity through the contact between the liquid and the connecting part, so as to enhance the heat dissipation effect of the heat dissipation cavity on the components placed in the inner cavity of the shell.

[0015] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a perspective view of Embodiment 1 of this utility model.

[0017] Figure 2 This is a bottom view of Embodiment 1 of this utility model.

[0018] Figure 3 This is an end view of Embodiment 1 of this utility model.

[0019] Explanation of reference numerals in the attached diagram:

[0020] First spacing 1;

[0021] 10. Shell; 11. Inlet section; 12. Outlet section;

[0022] Heat dissipation cavity 20, connecting part 21, first strip 211, transverse strip 2111, longitudinal strip 2112, second strip 212, third strip 213, sealing plate 22, first part 23, first channel 231, second channel 232, second part 24, partition 25;

[0023] Heat-conducting plate 30, plug-in part 31. Detailed Implementation

[0024] Please refer to Figure 1-3 As shown, it illustrates the specific structure of a preferred first embodiment of the present invention, which is a heat dissipation structure for an automotive electronic control box housing. It includes a housing 10 and a heat dissipation cavity 20 recessed on the lower end face of the housing 10 and facing upward. The upper end face of the heat dissipation cavity 20 is provided with a plurality of downwardly recessed connecting portions 21. The upper end of the heat dissipation cavity 20 is provided with a heat-conducting plate 30, the upper end of which extends into the inner cavity of the housing 10, and the lower end is provided with a plurality of insertion portions 31 inserted into the connecting portions 21. The lower end of the heat dissipation cavity 20 is provided with a detachable sealing plate 22. Because the heat dissipation cavity 20 is integrally formed on the lower end face of the housing 10, and the connecting part 21 is integrally formed on the upper end face of the heat dissipation cavity 20, the opening of the heat dissipation cavity 20 does not affect the mechanical strength of the housing 10 itself. In addition, due to the setting of the connecting part 21, while blocking and guiding the flow of liquid flowing in the heat dissipation cavity 20 to a certain extent, it can also dissipate heat from the heat-conducting plate 3 placed on the upper end of the heat dissipation cavity 20 through the contact between the liquid and the connecting part 21, thereby enhancing the heat dissipation effect of the heat dissipation cavity 20 on the components placed in the inner cavity of the housing 10.

[0025] It should be noted that installing a heat-conducting plate 30 on the heat dissipation cavity 20 can reduce the risk of the heat dissipation cavity 20 communicating with the inner cavity of the housing 10 due to external force shaking and impact when electrical components installed inside the housing 10 are damaged and fall to the ground.

[0026] For example, there is a first gap 1 between the lower end of the connecting part 21 and the upper end of the sealing plate 22. The length of the first gap 1 can be more than 1 mm or less. By opening the first gap 1, a portion of the liquid flowing in the sealing plate 22 can flow directly without being blocked and guided by the connecting part 21, and the flow rate of the water is accelerated in this way, so as to achieve a better cooling effect.

[0027] For example, one side wall of the housing 10 is provided with an inlet portion 11 and an outlet portion 12 that communicate with the heat dissipation cavity 20. The inlet portion 11 is a liquid inlet, and the outlet portion 12 is a liquid outlet.

[0028] For example, the heat dissipation cavity 20 includes a first portion 23 corresponding to the inlet portion 11 and a second portion 24 corresponding to the outlet portion 12. A partition 25 is provided between the first portion 23 and the second portion 24 so that the connecting portion of the first portion 23 and the second portion 24 is away from the inlet portion 11 and the outlet portion 12. The partition 25 separates the liquid, allowing it to flow from the inlet portion 11 into the first portion 23 until it reaches the connecting portion of the first portion 23 and the second portion 24, before entering the second channel 24 and being discharged directly into the outlet portion 12. During this process, the liquid makes full contact with the inner wall of the heat dissipation cavity 20 to increase the heat dissipation effect.

[0029] For example, the first part 23 is divided into a first channel 231 communicating with the second part 24 and a second channel 232 extending towards the side wall of the housing 10, with the second channel 232 adjacent to the inlet part 11. Since the first part 23 corresponds to the inlet part 11, when it is necessary to cool the high heat source inside the housing 10, the first part 23 is divided into a narrower first channel 231 and a wider second channel 232. The narrower first channel 231 is used to increase the liquid flow rate and enhance turbulence, while the second channel 232 increases the contact area with the high heat source to enhance the cooling effect.

[0030] For example, the connecting portion 21 includes multiple sets of first strips 211 spaced apart within the second channel 232. Each set of first strips 211 includes three transverse strips 2111 and one longitudinal strip 2112. The longitudinal strip 2112 is located at the end of the three transverse strips 2111 away from the side wall of the second channel 232, and one of the middle transverse strips 2111 is connected to a side wall of the second channel 232. Figure 2 As shown, there are three sets of three horizontal bars 2111 and one vertical bar 2112. The three sets of three horizontal bars 2111 and one vertical bar 2112 extend in an S-shape, so that the liquid entering the second channel 231 is divided into multiple water streams by the three horizontal bars 2111 and one vertical bar 2112 to contact and cool different positions in the second channel 232.

[0031] For example, the length of the three transverse strips 2111 at the end adjacent to the longitudinal strip 2112 can be adaptively increased or decreased according to the fluid direction. Figure 2 As shown, by changing the length of the three horizontal strips 2111, the flow direction of the liquid passing through the three horizontal strips 2111 is changed, thereby increasing the contact area between the liquid and the inner wall of the second channel 232.

[0032] The connecting part 21 also includes a second strip 212 disposed in the first channel 231 and a third strip 213 disposed in the second part 24. The second strip 212 is a long strip and is disposed in the middle of the first channel 231.

[0033] The third strip 213 consists of multiple separate longitudinal strips.

[0034] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A heat dissipation structure for an automotive electronic control box housing, comprising a housing (10) and a heat dissipation cavity (20) recessed in the lower end face of the housing (10) and facing upwards, characterized in that: The upper surface of the heat dissipation cavity (20) is provided with a plurality of downwardly recessed connecting parts (21), the upper end of the heat dissipation cavity (20) is provided with a heat-conducting plate (30), the upper end of the heat-conducting plate (30) extends to the inner cavity of the shell (10), and the lower end is provided with a plurality of plug-in parts (31) inserted into the connecting parts (21); the lower end of the heat dissipation cavity (20) is provided with a detachable sealing plate (22).

2. The heat dissipation structure for the electric control box shell of an automobile according to claim 1, characterized in that: There is a first gap (1) between the lower end of the connecting part (21) and the upper end of the sealing plate (22).

3. The heat dissipation structure for the electric control box shell of an automobile according to claim 1, characterized in that: The housing (10) has an inlet portion (11) and an outlet portion (12) on one side wall that communicate with the heat dissipation cavity (20).

4. The heat dissipation structure for the electric control box shell of an automobile according to claim 3, characterized in that: The heat dissipation cavity (20) includes a first part (23) corresponding to the inlet part (11) and a second part (24) corresponding to the outlet part (12). A partition (25) is provided between the first part (23) and the second part (24) so ​​that the connecting part of the first part (23) and the second part (24) is away from the inlet part (11) and the outlet part (12).

5. The heat dissipation structure for an automobile electric control box shell according to claim 4, characterized in that: The first part (23) is divided into a first channel (231) that communicates with the second part (24) and a second channel (232) that extends toward the side wall of the housing (10), and the second channel (232) is adjacent to the inlet part (11).

6. The heat dissipation structure for an automobile electric control box shell according to claim 5, characterized in that: The connecting part (21) includes multiple sets of first strips (211) spaced apart within the second channel (232). Each set of first strips (211) includes three transverse strips (2111) and one longitudinal strip (2112). The longitudinal strip (2112) is located at one end of the three transverse strips (2111) away from the side wall of the second channel (232), and one of the three transverse strips (2111) is connected to one side wall of the second channel (232).

7. The heat dissipation structure for an automobile electric control box shell according to claim 6, characterized in that: The length of the three transverse strips (2111) at the end adjacent to the longitudinal strip (2112) is adaptively increased or decreased according to the fluid direction.

8. The heat dissipation structure for an automobile electric control box shell according to claim 5, characterized in that: The connecting part (21) further includes a second strip (212) disposed in the first channel (231) and a third strip (213) disposed in the second part (24). The second strip (212) is a long strip and is disposed in the middle of the first channel (231).

9. The heat dissipation structure for an automobile electric control box shell according to claim 8, characterized in that: The third strip (213) consists of multiple separate longitudinal strips.

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