CN213662065U - Controller for parking air conditioner - Google Patents

Abstract

The utility model relates to a controller for parking air conditioner, through being close to the vertical busbar of radiator installation in PCB, make the power of inputing the controller supply power to these power devices through the busbar, rather than the design that the line of walking through the large tracts of land copper foil on the PCB carries out the power supply to power devices, with this effectual reduction PCB's wiring area, and the busbar of vertical installation is close to the radiator setting, the installation space on the PCB who occupies is few, consequently, can effectual reduction PCB's area, thereby make the automatically controlled casing volume at whole controller place reduce, be favorable to the miniaturization of automatically controlled box, in addition, because the busbar makes power supply circuit intercommunication through the mode of space cross-over connection, also bring the convenience for PCB wiring.

Description

Controller for parking air conditioner

Technical Field

The utility model relates to a controller for parking air conditioner belongs to air conditioner control field.

Background

Present parking air conditioner controller, power device such as MOS pipe is the device that bears of most operating current of whole controller in its controller, its operating current can reach tens of amperes, in order to realize providing so big overflowing to the MOS pipe on PCB, need set up the copper foil region of broad in order to reach the discharge capacity, because the controller needs to use a plurality of MOS pipes, this makes whole PCB need provide great area's copper foil region for this reason, with this area that has increased PCB, lead to the casing volume of whole controller great, and the design degree of difficulty that has increased PCB wiring.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve is that the PCB area of overcoming current parking air conditioner controller is great to this great problem of casing volume that leads to the controller.

The utility model provides a controller for parking air conditioner, a serial communication port, include:

the circuit board comprises a PCB, and a plurality of power devices are mounted on the PCB;

the radiator is fixedly installed with the power device;

the bus bar is close to the radiator and vertically installed on the PCB, and the bus bar supplies power for the work of the power device.

Optionally, the bus bar is sheet-like and includes a sheet body in the shape of a strip and a plurality of pins extending outward toward the same side of the sheet body.

Optionally, the power devices are arranged linearly, the bus bar is disposed close to the power devices, and each pin of the bus bar is close to each power device, so as to supply power to the close power devices through the pins.

Optionally, the number of the bus bars is multiple, the power devices are linearly arranged in multiple rows, and the bus bars are arranged between the linearly arranged power devices at intervals.

Optionally, the heat sink includes a plurality of vertical heat dissipation portions arranged vertically in parallel, and a horizontal heat dissipation portion connected to the same end of the vertical heat dissipation portions, and the power device is mounted on the vertical heat dissipation portions; the bus bar is at least partially located within a projection of the lateral heat dissipation portion on the PCB in a length direction.

Optionally, a heat-conducting insulating gasket is further arranged between the linearly arranged power device and the vertical heat-radiating part, the power device and the heat-conducting insulating gasket are welded and fixed, the heat-conducting insulating gasket is fixed on the vertical heat-radiating part through a first fixing piece, and heat-conducting silicone grease is further arranged between the vertical heat-radiating part and the heat-conducting insulating gasket.

Optionally, the controller further includes a metal casing, an inner wall surface of the casing abuts against a surface of the lateral heat dissipation portion, and a heat conductive silicone grease is provided between the inner wall surface of the casing and the surface of the lateral heat dissipation portion.

Optionally, a first mounting hole is formed in a region, located between the two vertical heat dissipation portions, of the transverse heat dissipation portion, a second mounting hole is formed in a corresponding position of the casing, and the second fixing member penetrates through the second mounting hole and is fixed to the first mounting hole so as to fix the casing and the heat sink.

Optionally, the casing includes casing body and mounting panel, and the casing body is formed with the installation that supplies the circuit board installation uncovered, and the inside wall face of casing body is provided with the guide way that leads when supplying the circuit board assembly, and mounting panel detachable installs in the installation uncovered.

Optionally, the housing further comprises a waterproof gasket sealing gasket mounted between the mounting plate and the mounting opening.

Adopt the utility model discloses a controller for parking air conditioner, through being close to the vertical busbar of radiator installation in PCB, make the power of inputing the controller supply power to these power devices through the busbar, but not the wiring that the large tracts of land copper foil on the PCB formed supplies power to power device, with this effectual reduction PCB's wiring area, and the busbar of vertical installation is close to the radiator setting, the installation space on the PCB who occupies is few, consequently, can effectual reduction PCB's area, thereby make the automatically controlled casing volume at whole controller place reduce, be favorable to the miniaturization of automatically controlled box, and also make the PCB wiring bring conveniently.

Drawings

Fig. 1 is a schematic structural diagram of a controller for a parking air conditioner according to an embodiment of the present invention;

fig. 2 is a partially exploded schematic view of a controller for a parking air conditioner according to an embodiment of the present invention;

fig. 3 is a partial schematic view of a circuit board portion of a controller for a parking air conditioner according to an embodiment of the present invention;

FIG. 4 is a schematic view of another view orientation of FIG. 3;

FIG. 5 is a partially exploded schematic view of FIG. 4;

fig. 6 is a front view of a bus bar of a controller for a parking air conditioner according to an embodiment of the present invention;

fig. 7 is a top view of a controller for a parking air conditioner according to an embodiment of the present invention;

fig. 8 is a cross-sectional view a-a of fig. 7.

Reference numerals:

the heat dissipation structure comprises a shell 10, a shell body 11, a second mounting hole 12, a guide groove 13, a mounting plate 14, a fixing mounting hole 141, a heat dissipation fin 15, a first side plate 16, a bottom plate 17, a top plate 18, a second side plate 19, a circuit board 20, a binding post 21, an electric connecting wire 22, a power device 23, a bus bar 24, a sheet body 241, a pin 242, a PCB27, an electrolytic capacitor 28, a control chip 2B, a heat sink 30, a vertical heat dissipation part 31, a transverse heat dissipation part 32, a first mounting hole 33, a wire protection sleeve 40, a waterproof gasket sealing gasket 50, a first fixing part 61, a second fixing part 62, a heat conduction insulating gasket 70 and heat conduction silicone grease 80.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict in structure or function. The present invention will be described in detail below with reference to examples.

The utility model provides a controller for parking air conditioner, as shown in fig. 1 to 8, including circuit board 20, radiator 30 and busbar 24, wherein circuit board 20 includes PCB27, has installed a plurality of electronic component on the PCB27, forms the control circuit of air conditioner through the wiring that combines on PCB27, inverter circuit including the operation of drive compressor, the current detection circuit that detects the compressor phase current has output control signal's control chip 2B's relevant circuit etc. wherein inverter circuit includes a plurality of power device 23, with circuit such as constitution inverter, work such as the compressor of drive parking air conditioner. The current passing through the device is large and can reach dozens of amperes when the device works. The heat sink 30 is fixedly mounted to the power device 23 to dissipate heat generated by the power device 23. The bus bar 24 is mounted on the PCB27 in a vertical position adjacent the heat sink 30, the bus bar 24 providing power for operation of the power device 23. Through setting up the busbar 24 of vertical installation, make the power of inputing the controller supply power to these power device 23 through busbar 24, but not the wiring that the large tracts of land copper foil on PCB27 formed supplies power to power device 23, with this effectual reduction PCB 27's wiring area, and the busbar 24 of vertical installation is close to radiator 30 and sets up, installation space on the PCB27 that occupies is few, consequently, can effectual reduction PCB 27's area, thereby make the automatically controlled casing volume at whole controller place reduce, be favorable to the miniaturization of automatically controlled box, and also make PCB27 wiring bring conveniently.

In some embodiments of the present invention, as shown in fig. 4 to 6, the bus bar 24 is in a sheet shape, and the sheet body 241 including a bar shape is a main body, and a plurality of fixing legs are extended outwards from the same side of the sheet body 241 to form the pins 242. The length of the sheet 241 is determined according to the arrangement of the power devices 23, the material of the sheet is copper, aluminum and the like, the pins 242 are plated with tin so as to be conveniently welded and fixed with the PCB27, the number of the pins 242 is specifically related to the number of the power devices 23, and in order to meet the requirement of the current capacity of the bus bar 24, the thickness of the bus bar can be generally set to 0.5-2mm, for example, 1 mm. So as to realize a current capacity of more than a few tens of amperes, for example, more than 100A at most, and meet the supply current demand of the power device 23.

In some embodiments of the present invention, as shown in fig. 3 to fig. 4, the power devices 23 mounted on the PCB27 are plural, and are linearly arranged, and can form plural columns, and as shown in fig. 4, the power devices 23 are linearly arranged into two columns, and are respectively fixed to two sides of the heat sink 30, and each pin 242 of the bus bar 24 is respectively close to each power device 23, so as to supply power to the close power devices 23 through the pin 242. The power supply to the power device 23 may specifically be a positive voltage that provides an input to the power device 23, and a negative voltage that provides an output to the power device 23, i.e., a common ground. Taking the power device 23 as an MOS transistor as an example, in an inverter circuit formed by three-phase upper and lower bridge arms formed by MOS transistors, drains of three MOS transistors of the upper bridge arm need to input a positive voltage respectively, and sources of three MOS transistors of the lower bridge arm need to be connected to an output common ground respectively, as shown in fig. 4, different bus bars 24 are arranged close to the MOS transistors through pins 242 thereof, the pins 242 of the bus bars 24 are connected to drains of the MOS transistors respectively, or the pins 242 are connected to sources of the MOS transistors respectively, so as to provide positive voltage power supply or common ground power supply respectively. By arranging the power devices 23 in a linear arrangement, the strip-shaped bus bar 24 can be arranged as close as possible to the power devices 23, and is connected to one of the poles of the power devices 23 through the pins 242 thereof on the wiring of the PCB27, so that power is supplied thereto, and thus, the space of the PCB27 occupied by the bus bar 24 can be further reduced.

In some embodiments of the present invention, the bus bar 24 is plural, the power devices 23 are arranged in multiple rows, and the plurality of bus bars 24 are arranged between the linearly arranged power devices 23 at intervals. In addition to the bus bars 24 mentioned in the above embodiment for providing the positive or common ground terminal for the power devices 23 of the inverter, there is also a power device 23 for providing power for other circuits such as the reverse-connection prevention circuit of the power input terminal, where the power devices 23 are also linearly arranged together with the other power devices 23 and fixed with the heat sink 30, and at this time, a plurality of bus bars 24 are required, and these plurality of bus bars 24 are sequentially arranged between the linearly arranged power devices 23 at intervals, as shown in fig. 4 and 5, three bus bars 24 are arranged, the power devices 23 are arranged in two rows, and three bus bars 24 are arranged between the power devices 23 arranged in two rows at intervals, so that the arrangement of the bus bars 24 and the power devices 23 is compact, and the space occupation of the PCB27 is reduced.

In some embodiments of the present invention, as shown in fig. 2 to 8, the heat sink 30 includes a plurality of vertical heat dissipation portions 31 arranged in parallel and vertically, and a horizontal heat dissipation portion 32 connected to the same end of the vertical heat dissipation portions 31, and the power device 23 is mounted on the vertical heat dissipation portion 31. Wherein the number of the vertical heat dissipation parts 31 is consistent with the number of the rows of the linearly arranged power devices 23, as shown in fig. 5, the power devices 23 are arranged in two rows, the number of the corresponding vertical heat dissipation parts 31 is also two, the two vertical heat dissipation parts 31 and the horizontal heat sink 30 form a pi letter shape together at one end, the vertical heat dissipation parts 31 and the horizontal heat sink 30 can be connected in an integrated manner or in other manners such as welding or riveting, and are connected in the integrated manner in fig. 5, the two rows of the power devices 23 are respectively fixed at the outer sides of the vertical heat dissipation parts 31, and by arranging the horizontal heat dissipation parts 32 and the vertical heat dissipation parts 31, the whole heat sink does not form installation interference with other electronic elements with larger volume such as electrolytic capacitors 28 installed on the PCB27, so that the heat dissipation area of the heat sink 30 can be effectively increased, and the installation space of the heat sink 30 can be reduced as much as possible, the miniaturization of the electric control box where the controller is located is facilitated. Further, the bus bar 24 is at least partially located lengthwise within the projection of the lateral heat sink portion 32 onto the PCB 27. As shown in fig. 4 and 5, most of the length of the three bus bars 24 is located below the lateral heat dissipation portions 32, so that the mounting space where the bus bars 24 are located is mostly located within the mounting space of the heat sink 30, so that the mounting spaces of the bus bars 24 and the heat sink 30 are further overlapped to make the components compact to mount, further reducing the mounting space.

In some embodiments of the present invention, as shown in fig. 4 and fig. 5, a heat conducting insulating gasket 70 is further disposed between the power device 23 and the vertical heat dissipating portion 31, the power device 23 is welded to the heat conducting insulating gasket 70, the heat conducting insulating gasket 70 is fixed to the vertical heat dissipating portion 31 through the first fixing member 61, and the vertical heat dissipating portion 31 is further provided with a heat conducting silicone grease 80 between the heat conducting insulating gasket 70. The heat conductive insulating pad 70 is preferably an aluminum substrate, the aluminum substrate is provided with a plurality of copper foil regions to form a pad to be welded to the heat generating surface of the power device 23, and then the aluminum substrate is fixed to the outer surface of the vertical heat dissipating portion 31 of the heat sink 30 by a first fixing member 61 such as a screw. Here, the power devices 23 linearly arranged are fixedly connected by adding the heat-conducting insulating gasket 70, so that the installation of the power devices 23 and the heat sink 30 is simplified, it is not necessary that each power device 23 needs a fixing member such as a screw for fixing with the heat sink 30, the aluminum substrate is fixedly connected with the power device 23 through welding and can be uniformly completed on the welding production line of the power device 23 and the PCB27, and then the aluminum substrate is fixed with the vertical heat dissipation part 31 only through a small number of fixing members such as screws, so that the installation process is effectively saved. And the heating of the power device 23 is reliably conducted to the aluminum substrate by welding the aluminum substrate and the power device 23, and then the heat conducting silicone grease 80 is coated between the aluminum substrate and the vertical heat radiating part 31, so that the heating of the power device 23 is uniformly conducted to the heat radiator 30 through the aluminum substrate, and the heat conduction efficiency between the power device 23 and the heat radiator 30 can be improved.

In some embodiments of the present invention, as shown in fig. 2 to 8, the controller further includes a housing 10 made of a metal material, an inner wall surface of the housing 10 abuts against a surface of the transverse heat dissipation portion 32, and a heat conductive silicone grease 80 is disposed between the inner wall surface of the housing 10 and the surface of the transverse heat dissipation portion 32. The housing 10 may be made of iron or aluminum, preferably aluminum, of sheet metal. The housing 10 has a certain thickness so as to have a certain heat dissipation function, and the inner wall surface of the housing 10 is abutted and fixed with the surface of the transverse heat dissipation part 32, so that the heat sink 30 and the housing 10 are integrated in heat dissipation, and thus the heat dissipation surface is greatly increased, heat generated by the power device 23 is conducted to the surface of the housing 10 through the transverse heat dissipation part 32, and thus the heat dissipation capability of the power device 23 is improved, and the working temperature of the power device 23 is not too high. Contributing to the operational reliability of the power device 23. The surface of the transverse heat dissipation part 32 and the inner wall surface of the shell 10 are added with a heat conduction silicone grease 80 layer, so that the heat conduction silicone grease 80 can realize better heat transfer.

In some embodiments of the present invention, as shown in fig. 1 to 8, the first mounting hole 33 is opened in the region of the horizontal heat dissipating portion 32 between the two vertical heat dissipating portions 31, the second mounting hole 12 is opened in the corresponding position of the housing 10, and the second fixing member 62 is fixed to the first mounting hole 33 through the second mounting hole 12 to fix the housing 10 and the heat sink 30. As shown in fig. 2 and 8 in particular, it is preferable that a plurality of first mounting holes 33 are provided in a middle region of the lateral heat dissipating portion 32 between the two vertical heat dissipating portions 31, and the first mounting holes 33 are internally threaded and then fixed to the first mounting holes 33 by a second fixing member 62 such as a screw from the housing 10 through the second mounting holes 12, thereby fixing the housing 10 and the heat sink 30.

Further, the heat dissipation fins 15 are densely distributed on the outer surface of the housing 10, thereby achieving good heat dissipation of the housing 10 from the heat conducted from the power device 23. The second fixing members 62 are distributed between the heat dissipating fins 15, and the outer surface of the housing 10 after the second fixing members 62 are fixed is not higher than the height of the heat dissipating fins 15, so that the second fixing members 62 do not protrude from the housing 10.

In some embodiments of the present invention, as shown in fig. 1, fig. 2 and fig. 8, the casing 10 includes a casing body 11 and a mounting plate 14, the casing body 11 is formed with an opening for installing the circuit board 20, the inner side wall surface of the casing body 11 is provided with a guide groove 13 for guiding the circuit board 20 during assembling, and the mounting plate 14 is detachably installed in the opening for installation. A mounting opening is formed at one end or both ends of the case 10 for the circuit board 20 to be inserted therein, and a mounting chamber is formed in the case body 11 for accommodating the circuit board 20. In order to facilitate the circuit board 20 to be placed in the housing body 11, the inner side wall surface of the housing body 11 is further provided with a guide groove 13, and the height of the guide groove 13 is consistent with the thickness of the PCB27, so that the PCB27 can be conveniently inserted into the guide groove 13 to place the circuit board 20 in the accommodating cavity, and the guide groove 13 also plays a role in positioning the circuit board 20 to prevent the circuit board 20 from moving in the vertical direction during installation and use. After the circuit board 20 is installed in the housing body 11, the mounting plate 14 is closed to the mounting opening, thereby closing the circuit board 20 in the housing 10. The fixing of the mounting hole 141 is also started on the mounting plate 14 to facilitate the fixing of the entire housing 10 to the existing equipment, such as a parking air conditioner, through the fixing mounting hole 141.

Specifically, the shell body 11 includes bottom plate 17, roof 18 that the interval set up relatively to and set up in first curb plate 16 and the second curb plate 19 of bottom plate 17 and roof 18 both sides, and bottom plate 17, roof 18, first curb plate 16 and second curb plate 19 enclose to close and form shell body 11, and the both ends of shell body 11 form the installation and open.

In this embodiment, the shell body 11 may be an integrally formed shell, and may be integrally formed in a stretching and stamping manner, so that the shell 10 is more firm and convenient to install. Of course, the split type bottom plate 17, the top plate 18, the first side plate 16 and the second side plate 19 can be spliced together.

Preferably, the housing body 11 is integrally formed by a stretching process, and the two mounting openings located at the two ends are stretched out and completely consistent in size, so that any one of the mounting openings in the two ends can be selected when the circuit board 20 is mounted, and the mounting is more convenient and faster.

In some embodiments of the present invention, as shown in fig. 2, the housing 10 further comprises a waterproof gasket sealing gasket 50, the waterproof gasket sealing gasket 50 being mounted between the mounting plate 14 and the mounting opening. The waterproof gasket sealing gasket 50 may be made of soft rubber or silica gel, which provides a sealing and waterproof effect for the installation of the installation plate 14 when the installation plate is fixed on the opening. The mounting plate 14 may be fixed to the end surface of the mounting opening by self-tapping screws.

In some embodiments of the present invention, as shown in fig. 1 to 8, the casing 10 further includes a wire sheath 40, the mounting plate 14 is provided with a mounting through hole, the wire sheath 40 is mounted on the mounting through hole, and the electrical connection wire 22 on the circuit board 20 extends from the casing 10 through the wire sheath 40. As the controller of the parking air conditioner has large current which can reach about 50A at most when in work, the overcurrent of a power supply cable and a driving wire of an output control compressor is large, the wire diameter is thick, and the controller is also provided with a communication wire which is connected with other control panels such as an indoor machine control panel of the air conditioner, so that the total connecting wires are more, in order to realize the assembly of the point connecting wires, a plurality of outlets can be arranged on the shell 10, as shown in figure 2, two outlets are arranged on the shell 10 to form a mounting through hole, one outlet is used for the driving wire of the compressor to pass through, the other outlet is used for the power supply wire and other control line communication wires to pass through, the outlets are arranged at one end of the shell 10, and are particularly arranged on the mounting plate 14, in order to avoid the outlets of sheet metal parts from damaging an insulating layer of the connecting wires, plastic wire protecting wire sleeves 40 are also arranged on the outlets, and the protecting wire sleeves, the electrical connection wires 22 respectively extend from these grommet 40 out of the housing 10.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. A controller for a parking air conditioner, comprising:

a circuit board comprising a PCB having a plurality of power devices mounted thereon;

the radiator is fixedly installed with the power device;

the bus bar is close to the radiator and vertically installed on the PCB, and the bus bar supplies power for the work of the power device.

2. The controller of claim 1, wherein the bus bar is laminar and includes a strip-shaped body and a plurality of pins that extend outward toward a same side of the body.

3. The controller according to claim 2, wherein the power devices are plural and arranged linearly, the bus bar is disposed close to the power devices, and each pin of the bus bar is close to each power device respectively, so as to supply power to the close power devices through the pin.

4. The controller according to claim 3, wherein the bus bar is plural, the power devices are linearly arranged in plural rows, and the plural bus bars are spaced between the linearly arranged power devices.

5. The controller of claim 4, wherein the heat sink comprises a plurality of vertical heat dissipation parts arranged vertically in parallel, and a transverse heat dissipation part connected to the same end of the vertical heat dissipation parts and far away from the PCB, and the power device is mounted on the vertical heat dissipation parts; the bus bar is at least partially located within a projection of the lateral heat sink portion on the PCB in a length direction.

6. The controller according to claim 5, wherein a heat conducting insulating gasket is further disposed between the linearly arranged power devices and the vertical heat dissipating part, the power devices and the heat conducting insulating gasket are fixed by welding, the heat conducting insulating gasket is fixed to the vertical heat dissipating part through a first fixing member, and a heat conducting silicone grease is further disposed between the vertical heat dissipating part and the heat conducting insulating gasket.

7. The controller according to claim 5, further comprising a metal casing, wherein an inner wall surface of the casing abuts against a surface of the lateral heat dissipating portion, and a heat conductive silicone grease is provided between the inner wall surface of the casing and the surface of the lateral heat dissipating portion.

8. The controller according to claim 7, wherein a first mounting hole is formed in a region of the transverse heat dissipating portion between the two vertical heat dissipating portions, a second mounting hole is formed in a corresponding position of the housing, and a second fixing member is fixed to the first mounting hole through the second mounting hole to fix the housing and the heat sink.

9. The controller of claim 7, wherein the housing comprises a housing body and a mounting plate, the housing body is formed with a mounting opening for mounting the circuit board, a guide groove for guiding the circuit board during assembly is formed on an inner side wall of the housing body, and the mounting plate is detachably mounted on the mounting opening.

10. The controller of claim 9, wherein said housing further comprises a waterproof gasket sealing gasket mounted between said mounting plate and said mounting opening.

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