Circuit board housing, boards, integrated domain controllers and vehicles

Abstract

This invention relates to a circuit board housing, comprising a housing body for protecting the circuit board and serving as a heat conductor for the circuit board, and a bracket for facilitating insertion and removal of the housing body; the bracket is rotatably connected to the front face of the housing body or pops out from the front face of the housing body. This invention also provides a circuit board, an integrated domain controller, and a vehicle using the above-described circuit board housing. The housing body serves as both a protective housing and a heat conductor for the circuit board, thus eliminating the need for heat sink fins, resulting in a small size and allowing for a regular rectangular shape. This facilitates close contact with heat dissipation devices for heat conduction, offering higher efficiency than air cooling, making it suitable for use in confined spaces, and allowing for convenient centralized insertion and removal onto a cold plate assembly with heat dissipation function, achieving distributed heat dissipation requirements for the circuit board. It also facilitates circuit board replacement during iterative replacement of the integrated domain controller's circuit board.

Description

Technical Field

[0001] This invention relates to an in-vehicle integrated domain controller, and more particularly to a circuit board housing, a board, an integrated domain controller, and a vehicle. Background Technology

[0002] As the automotive industry evolves, the definition of a car has changed from a simple means of transportation to a more diversified in-vehicle information interaction system. These changes mean that standalone in-vehicle controllers can no longer meet the demands of software computing power and resources, making domain integration an inevitable trend. Domain integration enables better software iteration and makes it possible to support a vehicle's use for 10 years with a single hardware setup. However, currently, there is still no specific solution available for vehicles that meets the requirements of a small interior space and high internal heat. Summary of the Invention

[0003] The purpose of this invention is to provide a circuit board housing, board, integrated domain controller and vehicle for use with vehicle integrated domain controllers, which can operate in confined spaces and in environments with temperatures up to 70 degrees Celsius.

[0004] A circuit board housing includes a housing body for protecting the circuit board and serving as a heat conductor for the circuit board, and a bracket for facilitating insertion and removal of the housing body. The bracket is rotatably connected to the front face of the housing body or can be pulled out or popped out from the front face of the housing body.

[0005] In one embodiment, an opening is formed on the rear end face of the housing body for the circuit board interface to extend or be exposed, and at least one opening is formed on the front end face for the wiring harness of the circuit board to extend; an opening is formed on the bracket opposite to the opening on the front end face of the housing body.

[0006] In one embodiment, the circuit board housing further includes an end cap, which is detachably connected to the bracket or housing body to cover at least a portion of the housing body and at least a portion of the bracket.

[0007] In one embodiment, the end cap has a cable outlet.

[0008] In one embodiment, the main body of the shell is generally rectangular, and the surfaces of its bottom plate and top plate are generally flat.

[0009] In one embodiment, the first end of the bracket is rotatably connected to the housing body, and the second end is detachably connected to the front end of the housing body.

[0010] A circuit board includes a circuit board housing as described above and a circuit board fixed inside the circuit board housing, wherein the circuit board is in contact with the inner surface of the circuit board housing to conduct heat to the circuit board housing.

[0011] In one embodiment, the circuit board has a first side end and a second side end disposed opposite to each other. The first side end is formed with a communication interface for communicating with other circuit boards, and the wiring harness of the circuit board is led out from the second side end. An opening is formed on the rear end face of the housing body of the circuit board housing for the communication interface of the circuit board to extend or be exposed, and at least one opening is formed on the front end face for the wiring harness of the circuit board to extend. An opening is formed on the bracket opposite to the opening on the front end face of the housing body.

[0012] An integrated domain controller includes multiple boards as described above and a cooling plate assembly for fixing the multiple boards and dissipating heat from them. The cooling plate assembly includes multiple partitions, and the boards contact the surfaces of the partitions to dissipate heat from the circuit boards inside the boards. The partitions have channels for coolant to flow through them.

[0013] A vehicle includes the aforementioned integrated domain controller, wherein the inlet and outlet of the cold plate assembly of the integrated domain controller are connected to the vehicle's coolant tank.

[0014] The main body of the circuit board housing of this invention serves as a protective shell and heat conductor for the circuit board. Therefore, it eliminates the need for heat sink fins, is small in size, and can be manufactured into a regular rectangular shape, facilitating close contact with heat dissipation devices for heat conduction. This provides higher heat dissipation efficiency than air cooling and is suitable for use in confined spaces. Due to the inclusion of a bracket for easy plug-and-play operation, multiple circuit boards (with the circuit board housing) can be centrally plugged into and placed on a heat-dissipating cold plate assembly, achieving distributed heat dissipation for the circuit boards. It also facilitates circuit board replacement during iterative replacements of the integrated domain controller's circuit boards. Integrated domain controllers and their boards using the circuit board housing of this invention are suitable for use in confined spaces and in high-temperature environments, such as vehicles. Attached Figure Description

[0015] Figure 1 This is an exploded view of the board in Example 1.

[0016] Figure 2 for Figure 1 A perspective view of a portion of the rear side of the main body of the mid-plate card's casing.

[0017] Figure 3 for Figure 1 Another perspective view of the fixed cover and rotatable pad of the button-locking structure.

[0018] Figure 4 This is a schematic diagram of the board bracket in Embodiment 1 when it is opened.

[0019] Figure 5 for Figure 4Enlarged view of part A in the middle.

[0020] Figure 6 This is an exploded view of the component structure of the integrated domain controller in Example 1.

[0021] Figure 7 for Figure 4 Exploded view of the backplane of the cold plate assembly of the integrated domain controller. Detailed Implementation

[0022] The circuit board housing, board card, integrated domain controller, and vehicle of the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.

[0023] like Figures 1 to 4 As shown, the circuit board 100 of Embodiment 1 of the present invention includes a circuit board housing and a circuit board 10 placed inside the circuit board housing. The circuit board housing mainly includes a housing body 20, a bracket 30, and an end cap 40. The housing body 20 is used to house and protect the circuit board 10, and also serves as a heat conductor for the circuit board 10, making close contact with the circuit board to conduct the heat generated by the circuit board to an external heat sink. In this embodiment, this is a cold plate assembly 50 (see...). Figure 6 The circuit board casing acts as a heat conductor rather than a heat dissipation device, so there is no need to install heat dissipation fins on it. It can be roughly rectangular in shape, small in size, and easy to make close contact with the cold plate assembly to achieve efficient heat conduction.

[0024] In this embodiment, the housing body 20 is made of a metal material, such as aluminum, and mainly includes a bottom shell 201 and a top plate 202 covering the upper end of the bottom shell 201. The bottom shell 201 mainly includes a bottom plate 2011, two side plates 2012 extending vertically from both sides of the bottom plate 2011, and a rear plate 2013 extending vertically from the rear side of the bottom plate 2011. The top plate 202 covers the upper end surfaces of the side plates 2012 and the rear plate 2013, thereby forming the housing body 20 into a cuboid with an open front end. The outer surfaces of the bottom plate and the top plate of this cuboid are generally flat, which allows for easy and close contact with the cold plate assembly, achieving efficient heat dissipation. The rear plate 2013 (i.e., the rear end face of the housing body) has an opening 2014 for the communication interface 11 of the circuit board 10 to extend or be exposed, and the front end face of the housing body 20 serves at least as an opening for the wiring harness of the circuit board 10 to extend. Understandably, the bottom shell 201 has protrusions and grooves for supporting and accommodating various protruding components on the circuit board 10, and the substrate of the circuit board 10 is preferably in contact with the top plate 202 to achieve efficient heat conduction.

[0025] Correspondingly, the circuit board 10 has a first side and a second side disposed opposite to each other. The first side has a communication interface 11 for communicating with other circuit boards, and the wiring harness of the circuit board 10 is led out from various wiring harness interfaces 12 on the second side. In this embodiment, the communication interface 11 extends from the opening 2014 of the housing body 20, and the wiring harness interfaces 12 are exposed on the front end face of the housing body 20.

[0026] The bracket 30 is used to facilitate the insertion and removal of the housing body 20. It is connected to the front face of the housing body 20 in a rotatable manner or in a pop-out manner. When it is necessary to insert or remove the housing body 20, the bracket 30 is rotated out or popped out for easy manual operation. After the insertion or removal operation is completed, the bracket 30 can be reset.

[0027] In this embodiment, the first end of the bracket 30 is rotatably connected to the first side of the front end of the housing body 20, and the second end is detachably connected to the second side of the front end of the housing body 20. An opening is formed on the bracket 30 that is opposite to the opening on the front end face of the housing body 20, which facilitates the routing of the wiring harness of the circuit board 10.

[0028] Specifically, the bracket 30 is also made of metal and is shaped like a bracket with a groove in the middle (communicating with the opening of the bracket). The groove provides space for the wire harness to extend and bend. A protruding card 31 is formed at the second end of the bracket 30, and two spaced-apart pillars 32 protrude from the first end toward the front face of the housing body 20. Through holes 33 are formed on the pillars 32. Correspondingly, two blades 2015 protrude from the first side of the front face of the housing body 20 toward the bracket 30, and through holes 2016 are formed on the blades 2015. The two pillars 32 are inserted between the two blades 2015, and both ends of a rotating shaft 34 are inserted into the through holes 33 and 2016, rotatably connecting the bracket 30 and the housing body 20. A torsion spring 35 is fitted onto the rotating shaft 34, and the arms of the torsion spring 35 abut against the front face of the housing body and the pillars 32. When no external force is applied to the bracket 30, the torsion spring 35 pushes the bracket 30 away from the front end face of the housing body 20, and the bracket 30 is in a rotated-out state.

[0029] In addition, a button locking structure is fixed on the front face of the housing body 20, opposite to the card 31 of the bracket 30. This button locking structure, from front to back, includes a fixed cover 2031, a button 2032, a rotatable washer 2033, and a spring 2034. The rotatable washer 2033 includes a baffle 20331, a rotating arm 20332 extending from the rear of the baffle 20331, and a rotating shaft 20333 connected to the end of the rotating arm 20332. The rotating shaft 20333 is inserted into two holes in the fixed cover 2031 and is rotatably connected to the fixed cover 2031.

[0030] A groove 2017 for receiving a spring 2034 is formed on the front end face of the housing body 20, and a locking structure 2018 for connecting a fixing cover 2031 is also formed. The fixing cover 2031 is fastened to the housing body 20 by the locking structure 2018, pressing the rotating washer 2033 and the button 2032 between the end of the spring 2034 and the fixing cover 2031. This causes the spring 2034 to be compressed and deformed by the baffle 20331 of the rotating washer 2033. An opening is formed on the fixing cover 2031 to expose the center of the button 2032. When the bracket 30 is pushed from the extended state to the reset state, the card 31 of the bracket 30 can pass through the side of the fixed cover 2031 and move the end of the baffle 20331 of the rotatable pad 20331 near the rotating arm 20332, causing the rotatable pad 2033 to rotate. This allows the card 31 to slide from one side of the baffle 20331 to the other side, where it is locked in place. When it is necessary to extend the bracket 30, pressing the button 2032 pushes the rotatable pad 2033 to a position where the baffle 20331 can no longer lock the card 31. The bracket 30 then pops out under the action of the torsion spring 34, resuming its extended state. This facilitates the insertion and removal of the board 100 by the operator.

[0031] The column 32 of the bracket 30 also has a limiting protrusion 38 extending outward toward the side plate 2012 (when the bracket 30 is closed). Viewed from a direction perpendicular to the front end face of the housing body 20, the limiting protrusion 38 protrudes outward beyond the side plate 2012 when the bracket is closed, and when the bracket 30 pops open, the limiting protrusion 38 can rotate to a position that does not protrude beyond the side plate 2012. Thus, the bracket 30 also has the function of limiting the board 100 when closed. In addition, when the bracket 30 rotates from the closed position to a preset angle, the limiting protrusion 38 will collide with the housing body 20 and cannot continue to rotate. That is, the limiting protrusion 38, in cooperation with the housing body 20, can limit the maximum angle of the bracket opening, which can prevent the bracket 30 from accidentally injuring personnel when it pops out.

[0032] In addition, a boss or step 20121 extending in the insertion / removal direction of the circuit board housing may be formed on one of the side plates 2012 of the bottom shell 201 as a foolproof design and a limiting design during installation and fixing.

[0033] The end cap 40 is detachably connected to the front end of the bracket 30. It covers at least a portion of the button locking structure and the bracket to prevent accidental button activation and to conceal the wiring of the circuit board, improving its appearance. It also protects the wiring harness of the circuit board 10, preventing accidental pulling of the harness during operation that could cause the board to malfunction. When the end cap 40 does not cover the entire front end of the bracket 30, the uncovered portion can serve as the cable outlet for the circuit board 100. When the end cap 40 covers the entire front end of the bracket 30, an opening can be formed on the end cap 40 as a cable outlet hole.

[0034] In this embodiment, the front end of the bracket 30 has multiple L-shaped notches 39, and the end cap 40 has multiple L-shaped latches 41. By inserting the latches 41 into the notches 39 and then sliding them horizontally, the end cap 40 can be latched onto the bracket 30. Furthermore, a flexible tab 43 extending toward the bracket can also be formed on one side of the end cap 40 (see...). Figure 6 The end of the paddle 43 may have a hook 36, and a matching hook 36 may be formed on the bracket 30. When the end cap 40 is connected by the snap fastener 41 and the notch 39, the hook of the paddle 43 is also connected to the hook 36, forming a snap-fit ​​relationship. When it is necessary to remove the end cap 40, first press the paddle 43 to separate the paddle 43 from the hook 36, and then move the end cap 40 to disengage the snap fastener 41 from the notch 39.

[0035] In this embodiment, the end cap 40 has an opening 42 near the support column 32 as a cable outlet.

[0036] When it is necessary to insert or remove the board, the end cover 40 must be removed first before the button locking structure can be operated and the bracket 30 can be unscrewed.

[0037] Figure 6 The diagram illustrates the combination relationship between multiple boards 100 and the cold plate assembly 50 of the integrated domain controller when the board 100 of Embodiment 1 of the present invention is applied to an integrated domain controller.

[0038] The cold plate assembly 50 mainly includes a bottom plate 51 at the bottom, a top plate 52 at the top, partitions 53 between the bottom plate 51 and the top plate 52, first side plates 54 and second side plates 55 on both sides, and a back plate 56 disposed at the rear of the cold plate assembly. The bottom plate 51, the partitions 53, and the top plate 52 are spaced apart, forming gaps between adjacent plates for inserting circuit boards 100. The two ends of the bottom plate 51, the partitions 53, and the top plate 52 are connected to the side walls of the first side plates 54 and the second side plates 55, and the back plate 52 is connected to the rear ends of the other plates, thus the cold plate assembly is frame-like. In this embodiment, the cold plate assembly 50 can dissipate heat for at least six circuit boards 100. For a clearer view, Figure 6 Only two boards 100 are shown in the image.

[0039] The cold plate assembly 50 is a liquid-cooled radiator. Both its first side plate 54 and second side plate 55 have cavities (i.e., hollow, forming an inner cavity). A flow channel is formed on the partition plate 53 that communicates with the inner cavities of the first side plate 54 and second side plate 55. A liquid inlet 541 is formed at the lower part of the front end face of the first side plate 54, and a liquid outlet 542 is formed at the upper part. During operation, to rapidly cool the partition plate 53, coolant needs to flow from the liquid inlet 541 into the cavity of the first side plate 54, then through the flow channel of the lower partition plate 53, into the cavity of the second side plate 55, then through the flow channel of the upper partition plate 53, into the cavity of the first side plate 54, and finally out through the liquid outlet 542. To guide the coolant flow in this manner, a flow-guiding structure should be provided within the inner cavities of the first side plate 54 and second side plate 55.

[0040] The main body of the cold plate assembly of the present invention (including a partition, a first side plate, and a second side plate) can be manufactured by die casting. Openings are provided on the first and second side plates for inserting a flow guide plate. The flow guide plate can be fixed inside the first and second side plates by welding, and then the openings on the first and second side plates are sealed. The entire cold plate assembly can be made of a metal or alloy with good thermal conductivity.

[0041] When the board 100 is inserted into the cold plate assembly 50, the top plate 202 and / or bottom plate 2011 of the circuit board housing of the board 100 preferably contacts the surface of the partition 53, and one of the side plates 2012 of the board 100 contacts the first side plate 54 or the second side plate 55. Because the cold plate assembly has a large contact area with the board, the heat dissipation effect is better, the overall utilization rate of the cold plate assembly is high, and the overall volume is smaller. This allows the board to be used normally in environments with high ambient temperatures, such as inside vehicles. Furthermore, the cold plate assembly has a multi-layer support structure, which facilitates the distributed heat dissipation of multiple boards in the integrated domain controller while maintaining centralized placement. It also facilitates replacement when a single board in the integrated domain controller needs to be replaced. When the integrated domain controller needs to add boards, the number of cooling components can be increased by connecting multiple cooling components in series through the liquid inlet 541 and the liquid outlet 542, or by connecting multiple cooling components in parallel to achieve product extension. The product can also be extended by increasing the length or width of the partition 53, thereby easily meeting the heat dissipation requirements of different integrated domain controllers. Therefore, the cold plate assembly of the present invention can meet the heat dissipation requirements of multi-card integrated domain controllers, and can also meet the cold plate assembly expansion requirements caused by product extension. In addition, the structure of the cold plate assembly of the present invention allows it to be die-cast, facilitating mass production.

[0042] Please also refer to Figure 7The backplate 56 of the cold plate assembly 50 has a three-layer sandwich structure. A circuit board with multiple communication interfaces 561 is fixed inside the backplate 56, and the multiple communication interfaces 561 are electrically connected to each other. When the board 100 is inserted into the cold plate assembly 50, the communication interface 11 of the circuit board 10 is plugged into the corresponding communication interface 561, realizing communication between the boards. When the board needs to be replaced or repaired, the corresponding board can be simply removed, which can realize standardized design and management and facilitate product upgrades and iterations.

[0043] Furthermore, the inner sides of the first side plate 54 and the second side plate 55 of the cold plate assembly 50 are also formed with grooves or guide rails that are adapted to the bosses or steps 20121 on the side plate 2012 of the board 100, to prevent the board from being installed backwards. The inner sides of the first side plate 54 and the second side plate 55 of the cold plate assembly 50 are also formed with grooves corresponding to the limiting protrusions 38 of the bracket 30. These grooves cooperate with the limiting protrusions 38. When the bracket 30 is closed, the limiting protrusions 38 are inserted into the corresponding grooves, limiting each board within the cold plate assembly 50, so that it will not slip out of the cold plate assembly 50 even if shaken. When the bracket 30 is opened, the limiting protrusions 38 are moved out of the corresponding grooves, thereby releasing the limitation between the board and the cold plate assembly.

[0044] A cover plate 57 can also be installed on the top plate 52 of the cold plate assembly 50. An input / output device such as a display, indicator light, alarm device, or input device can be installed between the top plate 52 and the cover plate 58 to facilitate the control and status display of the integrated domain controller.

[0045] When the aforementioned integrated domain controller is the integrated domain controller of the vehicle, the inlet 541 and outlet 542 of the cold plate assembly are adjacent to the vehicle's coolant tank. The liquid pump that controls the coolant flow rate and volume can be controlled by the integrated domain controller or by other on-board controllers.

[0046] In summary, the main body of the circuit board housing of this invention serves as a protective shell and heat conductor for the circuit board. Therefore, it eliminates the need for heat dissipation fins, has a small size, and can be manufactured into a regular rectangular shape, facilitating close contact with heat dissipation devices for heat conduction. This results in higher heat dissipation efficiency than air cooling and suitability for use in confined spaces. Due to the inclusion of a bracket for easy plug-and-play operation, multiple circuit boards (with the circuit board housing) can be centrally plugged into and placed on a cold plate assembly with heat dissipation function, achieving distributed heat dissipation for the circuit boards. It also facilitates circuit board replacement during iterative replacements of the integrated domain controller's circuit boards. Integrated domain controllers and their boards using the circuit board housing of this invention are suitable for use in confined spaces and in high-temperature environments, such as vehicles.

[0047] In the first embodiment described above, the circuit board housing includes an end cap 40, and the end cap 40 is detachably connected to the bracket 30. It is understood that in other embodiments, the end cap may be omitted or the end cap may be detachably connected to the housing body 20.

[0048] In the first embodiment described above, the main body of the circuit board housing is generally rectangular. It is understood that in other embodiments, the shape of the main body of the housing is not limited to a rectangular prism, but can also be a regular shape such as a hexagonal body, as long as it is convenient for it to contact the cold plate assembly to achieve good heat conduction efficiency.

[0049] In the first embodiment described above, the circuit board housing is sealed to the main body 20 of the housing via the top plate 202, and the circuit board 10 is inserted into the main body 20 of the housing from above. It is understood that in other embodiments, the side of the main body of the housing can be used as an opening for the circuit board to enter, in which case the main body of the housing is sealed to the circuit board via a side plate.

[0050] In the first embodiment described above, the communication interface 11 of the circuit board 10 of the board 100 for communicating with other boards is formed on the first side. This facilitates the insertion and removal of the board 100 and allows for better iteration, as well as standardized design and maintenance. It is understood that in other embodiments, communication interfaces can be provided at both ends of the circuit board to achieve the corresponding functions as needed. The first side of the circuit board may also have other interfaces besides the communication interface; correspondingly, the backplate of the cold plate assembly can have corresponding interfaces, as long as it does not affect the overall assembly of the board and the cold plate assembly.

[0051] In the first embodiment described above, the bracket 30 is rotatably connected to the front end of the housing body 20. It is understood that in other embodiments, the bracket 30 may also be inserted into the housing of the circuit board and pulled out for use when needed, or it may be locked inside the housing by a button locking device, and the bracket can be popped out when needed by pressing the button. In this case, the bracket 30 may include a column that extends out of the circuit board housing as an operating handle.

[0052] In the first embodiment described above, a torsion spring 35 is provided on the pivot 34 of the bracket 30, and one end of the bracket can be detachably connected to the housing body 20 via a button locking structure. It is understood that the torsion spring and the button locking structure can be omitted.

[0053] In the description of this invention, it should be understood that terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0055] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] Although the description of the invention has been given in conjunction with the specific embodiments described above, it will be apparent to those skilled in the art that many substitutions, modifications, and variations can be made based on the foregoing. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A circuit board housing, characterized in that, include: The housing body used to protect the circuit board and serve as a heat conductor for the circuit board is a cuboid with an open front end. A bracket for facilitating insertion and removal of the housing body has a first end rotatably connected to a first side of the front end of the housing body, and a second end detachably connected to a second side of the front end of the housing body. An opening is formed on the bracket that is opposite to the open opening on the front end face of the housing body for leading out the wiring harness of the circuit board. as well as End caps, which can be detachably attached to the bracket or housing body; The bracket has a protruding card at its second end, and a button locking structure is fixed on the front face of the housing body at a position opposite to the card. The end cap covers at least a portion of the button locking structure and the bracket to prevent the button locking structure from being accidentally triggered and to block the wiring portion of the circuit board.

2. The circuit board housing according to claim 1, characterized in that, An opening is formed on the rear end face of the housing body for the circuit board interface to extend or be exposed.

3. The circuit board housing according to claim 1, characterized in that, The button locking structure, from front to back, includes a fixed cover, a button, a rotatable washer, and a spring. The rotatable washer includes a baffle, a rotating arm extending from the rear of the baffle, and a rotating shaft connected to the end of the rotating arm. The rotating shaft is inserted into two holes in the fixed cover and rotatably connected to the fixed cover. A groove for receiving the spring is formed on the front end face of the housing body, and a locking structure for connecting the fixed cover is also formed. The fixed cover is fastened to the housing body by the locking structure, pressing the rotatable washer and the button between the end of the spring and the fixed cover, so that the spring is compressed and deformed by the baffle of the rotatable washer. An opening is formed on the fixed cover to expose the center of the button.

4. The circuit board housing according to claim 1, characterized in that, The end cap has a cable outlet.

5. The circuit board housing according to claim 1, characterized in that, The bottom and top plates of the main body of the shell are generally flat.

6. The circuit board housing according to claim 1, characterized in that, The first end of the bracket protrudes from the front end of the housing body with two spaced columns, each column having a through hole. Correspondingly, the first side of the front end of the housing body protrudes from the bracket with two blades, each blade having a through hole. The two columns are inserted between the two blades, and the two ends of a rotating shaft are inserted into the through holes on the blades and columns, rotatably connecting the bracket and the housing body. A torsion spring is fitted on the rotating shaft, with its arms abutting against the front end of the housing body and the columns. When no external force is applied to the bracket, the torsion spring pushes the bracket away from the front end of the housing body, and the bracket is in a rotated-out state.

7. A circuit board, characterized in that, Includes a circuit board housing as described in claim 1 and a circuit board fixed inside the circuit board housing, wherein the circuit board is in contact with the inner surface of the circuit board housing to conduct heat to the circuit board housing.

8. The board according to claim 7, characterized in that, The circuit board has a first side end and a second side end arranged opposite to each other. The first side end has a communication interface for communicating with other circuit boards. The wiring harness of the circuit board is led out from the second side end. An opening is formed on the rear end face of the housing body of the circuit board housing for the communication interface of the circuit board to extend or be exposed. At least one opening is formed on the front end face for the wiring harness of the circuit board to extend. An opening is formed on the bracket opposite to the opening on the front end face of the housing body.

9. An integrated domain controller, characterized in that, The device includes multiple circuit boards as described in claim 7 or 8 and a cooling plate assembly for fixing the multiple circuit boards and dissipating heat from them. The cooling plate assembly includes multiple partitions, and the circuit boards are in contact with the surfaces of the partitions to dissipate heat from the circuit boards inside the circuit boards. The partitions have channels for coolant to flow through them.

10. A vehicle, characterized in that, Includes the integrated domain controller as described in claim 9, wherein the inlet and outlet of the cold plate assembly of the integrated domain controller are connected to the vehicle's coolant tank.

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