Controller housing

Abstract

The utility model provides a controller housing, which comprises a top cover, the top cover comprises a top plate and a plurality of side plates which are sequentially connected around the peripheral side of the top plate to form an accommodating cavity, the plurality of side plates comprise cooling liquid inlet and outlet side plates, and the cooling liquid inlet and outlet side plates are provided with a liquid inlet through hole and a liquid outlet through hole which are used for communicating the inside and the outside of the accommodating cavity; the cooling runner is arranged on the top plate, an inlet section and an outlet section are arranged at the two ends of the cooling runner respectively, and the inlet section and the outlet section extend to the liquid inlet through hole and the liquid outlet through hole respectively; the width, in the direction parallel to the top plate, of the inlet section and the width, in the direction parallel to the top plate, of the outlet section are gradually reduced in the direction close to the cooling liquid inlet and outlet side plate. The height of the inlet section in the direction perpendicular to the top plate and the height of the outlet section in the direction perpendicular to the top plate are gradually increased in the direction close to the cooling liquid inlet and outlet side plate, and the problems that in the prior art, a controller shell is large in thickness and cumbersome in size are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of controllers, in particular to a controller housing. Background Art

[0002] With the rapid development of the power electronics industry, the power density of controllers is getting higher and higher, which makes the heat generated by controllers also increase. In order to ensure the normal operation of electronic equipment, it is necessary to increase the cooling capacity of the controller.

[0003] In the prior art, the controller usually uses coolant to dissipate heat. For example, a cooling channel, a liquid inlet joint and a liquid outlet joint are set on the shell of the controller shell. In order to ensure that the flow rate of the coolant in the cooling channel will not be greatly distorted, the height of the cooling channel will be consistent with the height of the liquid inlet joint and the liquid outlet joint. The remaining height in the shell except the cooling channel is the position for installing structures such as the PCB board. This results in the controller being thicker and bulkier. Utility Model Content

[0004] The main purpose of the utility model is to provide a controller housing to solve the problem that the controller housing in the prior art is relatively thick and bulky.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a controller housing, including a top cover, the top cover includes: a top plate and a plurality of side plates connected in sequence around the circumference of the top plate to enclose a accommodating cavity, the plurality of side plates include a coolant inlet and outlet side plate, the coolant inlet and outlet side plate is provided with a liquid inlet through hole and a liquid outlet through hole for connecting the inside and outside of the accommodating cavity; a cooling flow channel, the cooling flow channel is arranged on the top plate, the two ends of the cooling flow channel are respectively an inlet section and an outlet section, the inlet section and the outlet section extend to the liquid inlet through hole and the liquid outlet through hole respectively; wherein, the width of the inlet section in a direction parallel to the top plate and the width of the outlet section in a direction parallel to the top plate both gradually decrease along the direction close to the coolant inlet and outlet side plate, and the height of the inlet section in a direction perpendicular to the top plate and the height of the outlet section in a direction perpendicular to the top plate both gradually increase along the direction close to the coolant inlet and outlet side plate.

[0006] Furthermore, the top surface of the inlet section and the top surface of the outlet section are parallel to the top plate, and the distance between the bottom surface of the inlet section and the top plate and the distance between the bottom surface of the outlet section and the top plate gradually increase in the direction approaching the coolant inlet and outlet side plate.

[0007] Furthermore, the top plate includes a main plate body and a cover plate body, the main plate body is provided with a groove and an opening portion connected to the groove and located on a side of the groove away from the accommodating cavity, and the cover plate body is covered at the opening portion to form a cooling channel together with the main plate body.

[0008] Furthermore, the main plate body and the cover plate body are connected by welding.

[0009] Furthermore, a first strip-shaped protrusion is arranged in the groove, and one end of the first strip-shaped protrusion close to the coolant inlet and outlet side plate is connected to the groove side surface of the groove, and one end of the first strip-shaped protrusion away from the coolant inlet and outlet side plate is spaced apart from the groove side surface of the groove, so as to separate the cooling flow channel into an inlet flow channel and an outlet flow channel; wherein, one end of the inlet flow channel close to the coolant inlet and outlet side plate and one end of the outlet flow channel close to the coolant inlet and outlet side plate are spaced apart, one end of the inlet flow channel away from the coolant inlet and outlet side plate and one end of the outlet flow channel away from the coolant inlet and outlet side plate are connected, the inlet flow channel includes an inlet section and a main liquid inlet cooling section located at one end of the inlet section away from the coolant inlet and outlet side plate, and the outlet flow channel includes an outlet section and a main liquid outlet cooling section located at one end of the outlet section away from the coolant inlet and outlet side plate.

[0010] Furthermore, a liquid inlet diversion component is provided in the main liquid inlet cooling section, the liquid inlet diversion component includes a plurality of second strip protrusions, the plurality of second strip protrusions are spaced apart in a direction parallel to the top plate and perpendicular to the flow direction of the coolant, and both ends of each second strip protrusion are spaced apart from the groove side surface of the groove; and / or a liquid outlet diversion component is provided in the main liquid outlet cooling section, the liquid outlet diversion component includes a plurality of third strip protrusions, the plurality of third strip protrusions are spaced apart in a direction parallel to the top plate and perpendicular to the flow direction of the coolant, and both ends of each third strip protrusion are spaced apart from the groove side surface of the groove.

[0011] Furthermore, there are multiple liquid inlet diversion components, and the multiple liquid inlet diversion components are arranged at intervals along the direction away from the coolant inlet and outlet side plates; there are multiple liquid outlet diversion components, and the multiple liquid outlet diversion components are arranged at intervals along the direction away from the coolant inlet and outlet side plates.

[0012] Furthermore, the controller housing includes: a liquid inlet pipe joint, which is located on the side of the coolant inlet and outlet side plate away from the accommodating chamber and is connected to the liquid inlet through hole; a liquid outlet pipe joint, which is located on the side of the coolant inlet and outlet side plate away from the accommodating chamber and is connected to the liquid outlet through hole.

[0013] Furthermore, the liquid inlet pipe joint and the coolant inlet and outlet side plate are integrally die-cast; the liquid outlet pipe joint and the coolant inlet and outlet side plate are integrally die-cast.

[0014] Furthermore, the area of ​​the hole cross section of the liquid inlet pipe joint gradually decreases in the direction away from the coolant inlet and outlet side plate; the area of ​​the hole cross section of the liquid outlet pipe joint gradually decreases in the direction away from the coolant inlet and outlet side plate.

[0015] Applying the technical solution of the utility model, the controller housing of the utility model includes a top cover, which includes: a top plate and a plurality of side plates connected in sequence around the circumference of the top plate to enclose a accommodating cavity, the plurality of side plates include a coolant inlet and outlet side plate, and the coolant inlet and outlet side plates are provided with a liquid inlet through hole and a liquid outlet through hole for connecting the inside and outside of the accommodating cavity; a cooling flow channel, the cooling flow channel is arranged on the top plate, and the two ends of the cooling flow channel are respectively an inlet section and an outlet section, and the inlet section and the outlet section extend to the liquid inlet through hole and the liquid outlet through hole respectively; wherein, the width of the inlet section in a direction parallel to the top plate and the width of the outlet section in a direction parallel to the top plate both gradually decrease along the direction close to the coolant inlet and outlet side plate, and the height of the inlet section in a direction perpendicular to the top plate and the height of the outlet section in a direction perpendicular to the top plate both gradually increase along the direction close to the coolant inlet and outlet side plate. In this way, the controller housing of the utility model, by setting the above-mentioned inlet section and outlet section, increases the width of the portion of the cooling channel located between the inlet section and the outlet section in the direction parallel to the top plate and reduces the height of the portion of the cooling channel located between the inlet section and the outlet section in the direction perpendicular to the top plate, while ensuring that the flow area of ​​the cooling channel changes little. This can ensure that the circulation of the coolant at the inlet section and the outlet section will not be distorted, thereby ensuring that the internal pressure of the cooling channel will not be distorted, and the flow of the coolant is smoother, meeting the flow rate requirements in the cooling channel. The PCB board is installed at the portion of the cooling channel located between the inlet section and the outlet section, and the entire controller housing can achieve a smaller thickness in the direction perpendicular to the top plate, which is conducive to the lightweight setting of the controller and solves the problem of large thickness and bulky volume of the controller housing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the structure of an embodiment of a top cover of a controller housing according to the utility model in one direction is shown;

[0018] Figure 2 Shows Figure 1 A schematic diagram of the structure of the top cover shown in another direction;

[0019] Figure 3 Shows Figure 1 a top view of the top cover shown;

[0020] Figure 4 Shows Figure 1 a bottom view of the top cover shown;

[0021] Figure 5 Shows Figure 1 a front view of the top cover shown;

[0022] Figure 6 Shows Figure 5 A cross-sectional view of the top cover along the AA direction shown;

[0023] Figure 7 Shows Figure 5 A cross-sectional view of the top cover shown along direction BB;

[0024] Figure 8 Shows Figure 1 a side view of the top cover shown;

[0025] Fig. 9 Shows Figure 5 A cross-sectional view of the top cover along the CC direction shown;

[0026] Fig.10 Shows Figure 1 The top cover shown is a schematic diagram of the structure when the top plate does not include a cover plate body;

[0027] Fig.11 Shows Fig.10 A top view of the top cover is shown.

[0028] The above drawings include the following reference numerals:

[0029] 1. Top plate; 11. Main plate body; 111. Groove; 112. First strip-shaped protrusion; 113. Second strip-shaped protrusion; 114. Third strip-shaped protrusion; 12. Cover plate body;

[0030] 2. Side panel; 21. Coolant inlet and outlet side panel;

[0031] 3. Cooling channel; 31. Liquid inlet channel; 311. Inlet section; 312. Main liquid inlet cooling section; 32. Liquid outlet channel; 321. Outlet section; 322. Main liquid outlet cooling section;

[0032] 4. Liquid inlet pipe joint;

[0033] 5. Liquid outlet pipe connector. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] like Figure 1 and Fig.11As shown, the utility model provides a controller housing, including a top cover, which includes: a top plate 1 and a plurality of side plates 2 that are sequentially connected around the circumference of the top plate 1 to enclose a accommodating cavity, the plurality of side plates 2 including a coolant inlet and outlet side plate 21, and the coolant inlet and outlet side plate 21 is provided with a liquid inlet through hole and a liquid outlet through hole; a cooling channel 3, the cooling channel 3 is provided on the top plate 1, and the two ends of the cooling channel 3 are respectively an inlet section 311 and an outlet section 321, and the inlet section 311 and the outlet section 321 extend to the liquid inlet through hole and the liquid outlet through hole respectively; wherein, the width of the inlet section 311 in a direction parallel to the top plate 1 and the width of the outlet section 321 in a direction parallel to the top plate 1 are both gradually reduced along the direction close to the coolant inlet and outlet side plate 21, and the height of the inlet section 311 in a direction perpendicular to the top plate 1 and the height of the outlet section 321 in a direction perpendicular to the top plate 1 are both gradually increased along the direction close to the coolant inlet and outlet side plate 21.

[0036] In this way, the controller housing of the present invention is provided with the above-mentioned inlet section 311 and outlet section 321. Under the premise of ensuring that the flow area of ​​the cooling channel 3 changes little, the width of the portion of the cooling channel 3 located between the inlet section 311 and the outlet section 321 in the direction parallel to the top plate 1 is increased and the height of the portion of the cooling channel 3 located between the inlet section 311 and the outlet section 321 in the direction perpendicular to the top plate 1 is reduced. This can ensure that the circulation of the coolant at the inlet section 311 and the outlet section 321 will not be distorted, ensure that the internal pressure of the cooling channel 3 will not be distorted, and the flow of the coolant is smoother, meeting the flow demand in the cooling channel 3. The PCB board is installed at the portion of the cooling channel 3 located between the inlet section 311 and the outlet section 321, and the entire controller housing can achieve a smaller thickness in the direction perpendicular to the top plate 1, which is conducive to the lightweight setting of the controller and solves the problem of large thickness and bulky volume of the controller housing in the prior art.

[0037] like Figure 1 and Fig.11 As shown, the top surface of the inlet section 311 and the top surface of the outlet section 321 are both parallel to the top plate 1, and the distance between the bottom surface of the inlet section 311 and the top plate 1 and the distance between the bottom surface of the outlet section 321 and the top plate 1 gradually increase in the direction approaching the coolant inlet and outlet side plate 21.

[0038] like Figure 1 and Fig.11 As shown, the top plate 1 includes a main plate body 11 and a cover plate body 12. The main plate body 11 is provided with a groove 111 and an opening portion connected to the groove 111 and located on a side of the groove 111 away from the accommodating cavity. The cover plate body 12 is covered at the opening portion to enclose a cooling channel 3 together with the main plate body 11.

[0039] Specifically, the main plate body 11 and the cover plate body 12 are connected by welding.

[0040] like Fig.10 and Fig.11 As shown, a first strip protrusion 112 is provided in the groove 111, and one end of the first strip protrusion 112 close to the coolant inlet and outlet side plate 21 is connected to the groove side of the groove 111, and one end of the first strip protrusion 112 away from the coolant inlet and outlet side plate 21 is spaced from the groove side of the groove 111 to separate the cooling channel 3 into an inlet channel 31 and an outlet channel 32; wherein, one end of the inlet channel 31 close to the coolant inlet and outlet side plate 21 and one end of the outlet channel 32 close to the coolant One end of the liquid inlet and outlet side plate 21 is arranged at intervals, and the end of the liquid inlet channel 31 away from the cooling liquid inlet and outlet side plate 21 is connected to the end of the liquid outlet channel 32 away from the cooling liquid inlet and outlet side plate 21. The liquid inlet channel 31 includes an inlet section 311 and a main liquid inlet cooling section 312 located at the end of the inlet section 311 away from the cooling liquid inlet and outlet side plate 21. The liquid outlet channel 32 includes an outlet section 321 and a main liquid outlet cooling section 322 located at the end of the outlet section 321 away from the cooling liquid inlet and outlet side plate 21.

[0041] like Fig.10 and Fig.11 As shown, a liquid inlet diversion component is arranged in the main liquid inlet cooling section 312, and the liquid inlet diversion component includes a plurality of second strip protrusions 113, and the plurality of second strip protrusions 113 are spaced apart in a direction parallel to the top plate 1 and perpendicular to the flow direction of the coolant, and both ends of each second strip protrusion 113 are spaced apart from the groove side surface of the groove 111; and / or a liquid outlet diversion component is arranged in the main liquid outlet cooling section 322, and the liquid outlet diversion component includes a plurality of third strip protrusions 114, and the plurality of third strip protrusions 114 are spaced apart in a direction parallel to the top plate 1 and perpendicular to the flow direction of the coolant, and both ends of each third strip protrusion 114 are spaced apart from the groove side surface of the groove 111.

[0042] like Fig.10 and Fig.11 As shown, there are multiple liquid inlet diversion components, and the multiple liquid inlet diversion components are arranged at intervals along the direction away from the coolant inlet and outlet side plate 21; there are multiple liquid outlet diversion components, and the multiple liquid outlet diversion components are arranged at intervals along the direction away from the coolant inlet and outlet side plate 21.

[0043] like Figures 1 to 11 As shown, the controller housing includes: a liquid inlet pipe joint 4, which is located on the side of the coolant inlet and outlet side plate 21 away from the accommodating chamber and is connected to the liquid inlet through hole; a liquid outlet pipe joint 5, which is located on the side of the coolant inlet and outlet side plate 21 away from the accommodating chamber and is connected to the liquid outlet through hole.

[0044] Specifically, the liquid inlet pipe joint 4 and the coolant inlet and outlet side plate 21 are integrally die-cast; the liquid outlet pipe joint 5 and the coolant inlet and outlet side plate 21 are integrally die-cast.

[0045] In this way, the welding (or bonding) process between the liquid inlet pipe joint 4 and the liquid outlet pipe joint 5 and the coolant inlet and outlet side plate 21 is eliminated, thereby reducing the manufacturing cost while ensuring the air tightness of the top cover (if welding or bonding technology is used, there is a risk of leakage and failure).

[0046] like Fig.10 and Fig.11 As shown, the area of ​​the hole cross section of the liquid inlet pipe joint 4 gradually decreases in the direction away from the coolant inlet and outlet side plate 21; the area of ​​the hole cross section of the liquid outlet pipe joint 5 gradually decreases in the direction away from the coolant inlet and outlet side plate 21.

[0047] In addition, the controller housing of the present invention further comprises a bottom cover, and the top cover and the bottom cover together form a housing installation space for installing a PCB board and the like.

[0048] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0049] The controller housing of the utility model includes a top cover, which includes: a top plate 1 and a plurality of side plates 2 connected in sequence around the circumference of the top plate 1 to enclose a receiving cavity, the plurality of side plates 2 including a coolant inlet and outlet side plate 21, the coolant inlet and outlet side plate 21 is provided with a liquid inlet through hole and a liquid outlet through hole for connecting the inside and outside of the receiving cavity; a cooling flow channel 3, the cooling flow channel 3 is arranged on the top plate 1, the two ends of the cooling flow channel 3 are respectively an inlet section 311 and an outlet section 321, the inlet section 311 and the outlet section 321 extend to the liquid inlet through hole and the liquid outlet through hole respectively; wherein, the width of the inlet section 311 in a direction parallel to the top plate 1 and the width of the outlet section 321 in a direction parallel to the top plate 1 are gradually reduced along the direction close to the coolant inlet and outlet side plate 21, and the height of the inlet section 311 in a direction perpendicular to the top plate 1 and the height of the outlet section 321 in a direction perpendicular to the top plate 1 are gradually increased along the direction close to the coolant inlet and outlet side plate 21. In this way, the controller housing of the present invention is provided with the above-mentioned inlet section 311 and outlet section 321. Under the premise of ensuring that the flow area of ​​the cooling channel 3 changes little, the width of the portion of the cooling channel 3 located between the inlet section 311 and the outlet section 321 in the direction parallel to the top plate 1 is increased and the height of the portion of the cooling channel 3 located between the inlet section 311 and the outlet section 321 in the direction perpendicular to the top plate 1 is reduced. This can ensure that the circulation of the coolant at the inlet section 311 and the outlet section 321 will not be distorted, ensure that the internal pressure of the cooling channel 3 will not be distorted, and the flow of the coolant is smoother, meeting the flow demand in the cooling channel 3. The PCB board is installed at the portion of the cooling channel 3 located between the inlet section 311 and the outlet section 321, and the entire controller housing can achieve a smaller thickness in the direction perpendicular to the top plate 1, which is conducive to the lightweight setting of the controller and solves the problem of large thickness and bulky volume of the controller housing in the prior art.

[0050] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0051] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0052] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0053] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0054] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0055] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A controller housing, characterized in that: A top cover is included, the top cover comprising: A top plate (1) and a plurality of side plates (2) sequentially connected around the circumference of the top plate (1) to enclose a receiving cavity, wherein the plurality of side plates (2) include a cooling liquid inlet and outlet side plate (21), and the cooling liquid inlet and outlet side plate (21) is provided with a liquid inlet through hole and a liquid outlet through hole for connecting the inside and outside of the receiving cavity; A cooling channel (3), the cooling channel (3) being arranged on the top plate (1), the two ends of the cooling channel (3) being an inlet section (311) and an outlet section (321), respectively, the inlet section (311) and the outlet section (321) respectively extending to the liquid inlet through hole and the liquid outlet through hole; The width of the inlet section (311) in a direction parallel to the top plate (1) and the width of the outlet section (321) in a direction parallel to the top plate (1) both gradually decrease in a direction close to the coolant inlet and outlet side plate (21), and the height of the inlet section (311) in a direction perpendicular to the top plate (1) and the height of the outlet section (321) in a direction perpendicular to the top plate (1) both gradually increase in a direction close to the coolant inlet and outlet side plate (21).

2. The controller housing according to claim 1, characterized in that: The top surface of the inlet section (311) and the top surface of the outlet section (321) are both parallel to the top plate (1), and the distance between the bottom surface of the inlet section (311) and the top plate (1) and the distance between the bottom surface of the outlet section (321) and the top plate (1) both gradually increase in a direction approaching the coolant inlet and outlet side plate (21).

3. The controller housing according to claim 1, characterized in that: The top plate (1) comprises a main plate body (11) and a cover plate body (12); the main plate body (11) is provided with a groove (111) and an opening portion which is connected to the groove (111) and is located on a side of the groove (111) away from the accommodating cavity; the cover plate body (12) is covered at the opening portion to enclose the cooling channel (3) together with the main plate body (11).

4. The controller housing according to claim 3, characterized in that: The main plate body (11) and the cover plate body (12) are connected by welding.

5. The controller housing according to claim 3, characterized in that: A first strip-shaped protrusion (112) is arranged in the groove (111), one end of the first strip-shaped protrusion (112) close to the coolant inlet and outlet side plate (21) is connected to the groove side surface of the groove (111), and one end of the first strip-shaped protrusion (112) away from the coolant inlet and outlet side plate (21) is spaced apart from the groove side surface of the groove (111), so as to separate the cooling flow channel (3) into a liquid inlet flow channel (31) and a liquid outlet flow channel (32); The end of the liquid inlet channel (31) close to the coolant inlet and outlet side plate (21) and the end of the liquid outlet channel (32) close to the coolant inlet and outlet side plate (21) are arranged at intervals, and the end of the liquid inlet channel (31) away from the coolant inlet and outlet side plate (21) and the end of the liquid outlet channel (32) away from the coolant inlet and outlet side plate (21) are connected. The liquid inlet channel (31) includes the inlet section (311) and a main liquid inlet cooling section (312) located at an end of the inlet section (311) away from the coolant inlet and outlet side plate (21), and the liquid outlet channel (32) includes the outlet section (321) and a main liquid outlet cooling section (322) located at an end of the outlet section (321) away from the coolant inlet and outlet side plate (21).

6. The controller housing according to claim 5, characterized in that: A liquid inlet flow splitter assembly is arranged in the main liquid inlet cooling section (312), the liquid inlet flow splitter assembly comprises a plurality of second strip-shaped protrusions (113), the plurality of second strip-shaped protrusions (113) are arranged at intervals in a direction parallel to the top plate (1) and perpendicular to the flow direction of the coolant, and both ends of each of the second strip-shaped protrusions (113) are arranged at intervals from the groove side surface of the groove (111); and / or A liquid outlet diversion component is arranged in the main liquid outlet cooling section (322), and the liquid outlet diversion component includes a plurality of third strip-shaped protrusions (114). The plurality of third strip-shaped protrusions (114) are arranged at intervals in a direction parallel to the top plate (1) and perpendicular to the flow direction of the coolant, and both ends of each of the third strip-shaped protrusions (114) are arranged at intervals from the groove side surface of the groove (111).

7. The controller housing according to claim 6, characterized in that: The number of the liquid inlet flow splitter components is multiple, and the multiple liquid inlet flow splitter components are arranged at intervals in a direction away from the coolant inlet and outlet side plate (21); The number of the liquid outlet flow splitting components is multiple, and the multiple liquid outlet flow splitting components are arranged at intervals in a direction away from the cooling liquid inlet and outlet side plate (21).

8. The controller housing according to claim 1, characterized in that: The controller housing comprises: A liquid inlet pipe joint (4), the liquid inlet pipe joint (4) being located on a side of the coolant inlet and outlet side plate (21) away from the accommodating cavity and connected to the liquid inlet through hole; A liquid outlet pipe joint (5), the liquid outlet pipe joint (5) is located on a side of the coolant inlet and outlet side plate (21) away from the accommodating cavity and is connected to the liquid outlet through hole.

9. The controller housing according to claim 8, characterized in that: The liquid inlet pipe joint (4) and the coolant inlet and outlet side plate (21) are integrally die-cast; The liquid outlet pipe joint (5) and the coolant inlet and outlet side plate (21) are integrally die-cast.

10. The controller housing according to claim 8, characterized in that: The area of ​​the hole cross section of the liquid inlet pipe joint (4) gradually decreases in a direction away from the coolant inlet and outlet side plate (21); The area of ​​the hole cross section of the liquid outlet pipe joint (5) gradually decreases in a direction away from the coolant inlet and outlet side plate (21).

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