CN211959746U - Controller - Google Patents

Abstract

A controller comprises a shell, a first sealing ring, a second sealing ring and a sealing ring, wherein the shell is provided with a top wall and a side wall connected with the top wall, the top wall and the side wall define an installation space, the side wall is provided with continuously distributed grooves at the edges far away from the top wall, and the sealing ring is installed in the grooves; a printed circuit board mounted in the mounting space; one end of each binding post is fixed on the printed circuit board, and the other end of each binding post extends out of the shell; a connector mounted on the housing and electrically connected to the printed circuit board, the connector having a length direction parallel to a board surface of the printed circuit board; the radiator has the heat dissipation wall of heat dissipation base and perpendicular to heat dissipation base, and the radiator is by aluminium or aluminum alloy stretch forming, and the direction that a plurality of terminal extends is on a parallel with the heat dissipation base is arranged, and the length direction of connector sets up on a parallel with the direction of heat dissipation wall, and the heat dissipation base is installed to casing cover installation space and the sealing member supports and leans on the surface that has heat dissipation wall one side in the heat dissipation base. The controller has simple structure, easy manufacture, good heat dissipation and low cost.

Description

Controller

Technical Field

The utility model relates to a controller technical field especially relates to be applied to controller of electronic equipment of riding.

Background

The electric riding device is powered by a battery to enable a motor (of the type of direct current, alternating current, series excitation, independent excitation and the like) to drive the electric riding device to run. The controller is a core component in the electric riding device, the controller is used for inverting direct current output by the battery into alternating current to drive the motor to work, and the input end and the output end of the controller are respectively connected to the corresponding battery and the corresponding motor through the wiring terminals.

The controller usually includes the casing and installs the printed circuit board in the installation space that the casing formed, and the high-power electronic component such as field effect transistor is born to the last printed circuit board, and field effect transistor during operation need bear heavy current and lead to calorific capacity great, consequently designs complicated structure on the casing and guarantees that the controller has good heat dispersion, waterproof shell performance and good anti-seismic performance. In order to adapt to these structures, the housing of the controller is usually manufactured by die-casting or injection molding, however, the controller in the prior art is not only complicated in structure and large in volume, but also high in manufacturing cost, so that it is necessary to overcome the technical problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome above-mentioned one or more weak points, the utility model discloses a particular embodiment has solved the complicated and not good problem of electronic component heat dissipation in the controller of the controller structure in the prior art.

In some embodiments of the present invention, there is provided a controller assembly, comprising:

the sealing device comprises a shell, a first sealing element and a second sealing element, wherein the shell is provided with a top wall and a side wall connected with the top wall, the top wall and the side wall define a mounting space, the side wall is provided with a continuously distributed sealing groove at the edge far away from the top wall, and the first sealing element is mounted in the sealing groove;

a printed circuit board mounted in the mounting space;

one end of each wiring terminal is fixed on the printed circuit board, and the other end of each wiring terminal extends out of the shell;

a connector mounted on the housing and electrically connected to the printed circuit board, the connector having a length direction parallel to a board surface of the printed circuit board;

the radiator is formed by stretching aluminum or aluminum alloy, the plurality of binding posts are parallel to the extending direction of the radiating wall, the length direction of the connector is parallel to the extending direction of the radiating wall, the radiating base is installed on the shell, and the first sealing element abuts against the surface of one side of the radiating wall, wherein the radiating base is provided with the radiating wall perpendicular to the radiating wall.

Furthermore, the shell is provided with a first opening and a second opening which are communicated with the installation space, the top wall is provided with a first protruding portion and a second protruding portion which protrude from the outer surface of the top wall, the first protruding portion and the second protruding portion are different in height, the first opening and the second opening are respectively arranged on the first protruding portion and the second protruding portion, the first opening and the second opening are approximately parallel to each other, the connector is installed on the first opening, and the plurality of wiring terminals extend out of the shell through the second opening.

Further, the controller has a connector support fixed on the heat dissipation base, the connector is mounted on the connector support, the housing has a first side wall surrounding the first opening at the first protruding portion, the first side wall abuts against the connector, and a second sealing member is further arranged between the first side wall and the connector.

Furthermore, the controller is provided with a terminal bent frame arranged on the heat dissipation base, the plurality of terminals are fixed on the terminal bent frame, and the shell is provided with a second side wall which surrounds the second opening on the second protruding part; the second side wall is abutted against the terminal bent frame, and a third sealing piece is arranged between the second side wall and the terminal bent frame.

Further, the connector comprises an insulating body and a plurality of conductive terminals mounted on the insulating body, the conductive terminals are electrically connected to the printed circuit board, the insulating body is mounted on the connector support, a first step portion and a plurality of support columns are arranged on the connector support, a second step portion arranged along the extending direction of the heat dissipation wall is arranged on the heat dissipation wall, the first step portion and the second step portion are oppositely arranged, and the printed circuit board is supported by the first step portion, the plurality of support columns and the second step portion.

Furthermore, the field effect transistors are sequentially arranged on one side of the heat dissipation wall; the printed circuit board is further provided with an elastic reed, the elastic reed is provided with a first tongue pressing connector, a plurality of first tongue pressing bodies and a plurality of second tongue pressing bodies, the plurality of first tongue pressing bodies and the plurality of second tongue pressing bodies are respectively connected to two sides of the first tongue pressing connector, the elastic reed surrounds the heat dissipation wall and is fixed on the heat dissipation wall, the first tongue pressing connector is located at the top of the heat dissipation wall, the plurality of first tongue pressing bodies are located on one side provided with the plurality of field effect tubes, the plurality of second tongue pressing bodies are fixed on one side, back to the plurality of field effect tubes, of the heat dissipation wall, the plurality of field effect tubes are located between the plurality of first tongue pressing bodies and the heat dissipation wall, and the plurality of second tongue pressing bodies press the plurality of field effect tubes to be attached to the heat dissipation wall.

Furthermore, the field effect transistors are sequentially arranged on one side of the heat dissipation wall; the printed circuit board is further provided with an elastic reed, the elastic reed is provided with a second tongue pressing connector, a third tongue pressing body and a fourth tongue pressing body, the third tongue pressing body and the fourth tongue pressing body are respectively connected to the two ends of the second tongue pressing connector through bending parts, the elastic reed surrounds the heat dissipation wall and is fixed on the heat dissipation wall, the second tongue pressing connector is located on one side of the plurality of field effect tubes, the third tongue pressing body and the fourth tongue pressing body are fixed on one side, back to the heat dissipation wall, of the plurality of field effect tubes, the plurality of field effect tubes are located between the second tongue pressing connector and the heat dissipation wall, and the second tongue pressing connector compresses the plurality of field effect tubes so that the plurality of field effect tubes are attached to the heat dissipation wall.

Furthermore, the controller also comprises a plurality of mounting brackets which are provided with mounting holes which penetrate through the mounting brackets, the mounting brackets are arranged at the edges of the heat dissipation base which are approximately parallel to the extending direction of the heat dissipation wall, the mounting brackets and the heat sink are integrally formed, and a fastener penetrates through the mounting holes to mount the controller to a mounting position.

Further, the heat dissipation base is provided with a plurality of through holes, the shell is further provided with a plurality of threaded holes, and bolts penetrate through the through holes and are screwed in the threaded holes so that the heat dissipation base covers the installation space.

Further, the controller according to any one of the preceding claims, which is applied to an electric riding device, wherein the heat sink is formed by stretching aluminum or aluminum alloy along the extending direction of the heat dissipation wall, the housing is made of plastic, and the plurality of terminals extend out of the other end of the housing and are electrically connected to a terminal of an external device through fasteners.

From the above, the technical scheme of the utility model the radiator through as the bottom plate is made by aluminium or aluminum alloy through the tensile orientation that tensile work extends along the heat dissipation wall, and the radiator not only has and has better heat dispersion than the device of making through die casting process. Simultaneously, through setting up the elasticity reed with field effect transistor and heat dissipation wall closely laminating each other to the heat dissipation wall sets up on the heat dissipation base, thereby has solved the difficult effective discharge of heat that produces of electronic component work in the prior art controller, and the complicated higher problem of manufacturing cost of structure. Compared with the prior art, the utility model discloses a technical scheme's controller has good heat dispersion, and simple structure has also reduced the manufacturing cost of controller simultaneously.

Drawings

The features, characteristics, advantages and benefits of the present invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.

FIG. 1 shows a schematic diagram of a controller according to an embodiment.

FIG. 2 illustrates an exploded view of a controller according to one embodiment.

FIG. 3 is a schematic cross-sectional view of a controller according to an embodiment.

FIG. 4 is a schematic diagram illustrating another perspective exploded view of a controller according to one embodiment.

Fig. 5 is a partial schematic diagram of a controller according to another embodiment.

Detailed Description

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 4, a controller 10 according to an embodiment is shown, the controller 10 being applied to an electric riding device such as an electric bicycle, a two-wheeled electric vehicle, etc., and as shown, the controller 10 includes a housing, a heat sink 12, a PCB (Printed circuit board) 13, a connector 14, a connector bracket 15, and a terminal block 16. Wherein the housing includes an upper housing 11 and a bottom plate, the upper housing 11 is made of a plastic material, the upper housing 11 includes a top wall 111 and a side wall 112 continuously protruded along an edge of the top wall 111, the top wall 111 and the side wall 112 define a mounting space, and the bottom plate is mounted to the top wall 111 from a side opposite to the top wall 111 so as to cover the mounting space. The outer surface of the upper case 11 has a first opening 113 and a second opening 114 communicating with the mounting space, and the first opening 113 and the second opening 114 are arranged substantially parallel to each other. Specifically, the top wall 111 has a first protrusion 115 and a second protrusion 116 protruding from an outer surface of the top wall 111, the first protrusion 115 and the second protrusion 116 may have different heights, and in the present embodiment, the first opening 113 and the second opening 114 are respectively disposed on the first protrusion 115 and the second protrusion 116. The first and second openings 113 and 114 of different heights allow the controller 10 to accommodate electronic components of different heights carried on the PCB board 13.

The PCB 13 is installed in the installation space, the PCB 13 comprises an aluminum substrate and a copper-clad plate which are used as metal insulation substrates, electronic elements such as a plurality of field effect tubes 131 are loaded on the PCB 13 and are installed on the PCB 13 in a pin plugging mode to be electrically connected with conductive tracks in the copper-clad plate, and the PCB 13 is further connected with a connector 14 and a plurality of binding posts (not shown in the figure). Specifically, the chassis includes a connector holder 15 fixed thereto, and the connector 14 is mounted on and fixed to the connector holder 15. As shown, the connector 14 includes a dielectric body 141 and a plurality of conductive terminals (not shown), and the dielectric body 141 of the connector 14 is mounted at the first opening 113. The insulating body 141 and the plurality of conductive terminals are soldered together to the PCB board 13 and the conductive terminals are electrically connected to conductive traces in the copper clad laminate of the PCB board 13. Meanwhile, the insulation body 141 is arranged at the edge of the PCB 13, the insulation body 141 has a stopping part at the edge of the PCB 13, and the PCB 13 abuts against the stopping part, which is beneficial to the relative installation between the insulation body 141 and the PCB 13. In addition, the connector holder 15 is made of plastic material and has several supporting surfaces for supporting the PCB 13, in this embodiment, the connector holder 15 has a side wall 151 and a first step portion 152 formed on the side wall 151, and the connector holder 15 further has at least two supporting posts 153. The first step portion 152 and the support columns 153 realize supporting and fixing of the PCB 13 when the connector 14 is mounted to the connector holder 15. Further, the connector 14 has a longitudinal direction parallel to the board surface of the PCB. The controller 10 is connected to and communicates with an external device through the connector 14. And the terminal bent 16 is respectively fixed on the bottom plate, and a plurality of terminals are installed on the PCB 13 through the terminal bent 15, wherein one ends of the terminals are fixed on the PCB 13 in a welding mode and are electrically connected with the conductive tracks in the copper-clad plate. The other end of the terminal post extends out of the controller housing, for example, through a second opening 114 formed on the surface of the upper housing 11 of the controller, and the other end of the terminal post is electrically connected and fixed to a terminal for connecting an external device by a fastener, for example, a screw, a clip, or a spring. The terminals are used for carrying large current, and the controller 10 is electrically connected to other parts of the riding device through the terminals. In the present embodiment, the controller 10 includes 5 terminals, wherein 2 terminals are electrically connected to the positive and negative electrodes of the battery, and the remaining 3 terminals are electrically connected to the three-phase terminal UVW of the motor, respectively. Further, the upper case 11 has a first side wall 117 surrounding the first opening 113 at the first boss 115 and a second side wall 118 surrounding the second opening 114 at the second boss 116, and when the PCB board 13 is fixed to the upper case 11 of the controller, the first side wall 117 and the second side wall 118 abut against the connector holder 15 and the terminal strip holder 16, respectively, and there are also a second seal 17, a third seal 18, and a third seal 18 between the first side wall 117 and the connector holder 15 and between the second side wall 118 and the terminal strip holder 16, respectively, and the third seal 18 prevents external liquid from entering the installation space of the controller 10 through the gaps at the first opening 113 and the second opening 114 of the upper case 11 by the second seal 17.

The heat sink 12 has a heat radiation base 121 and a heat radiation wall 122, and the heat radiation wall 122 is disposed perpendicular to the heat radiation base 121. The heat dissipation base 121 and the heat dissipation wall 122 are integrally formed by stretching a metal material with good heat conductivity, such as aluminum or an aluminum alloy, and further, the heat dissipation base 121 and the heat dissipation wall 122 are formed by stretching aluminum or an aluminum alloy along the extending direction of the heat dissipation wall 122. The heat sink 12 formed by the drawing process is simple in process and low in cost, and the manufacturing cost of the controller 10 is reduced. In addition, the heat sink 12 manufactured by the drawing process has a uniform distribution of internal molecular structures, and has a better heat conductivity than a device manufactured by a die casting process. In the present embodiment, the heat dissipation base 121 is substantially rectangular, and the heat dissipation base 121 serves as a bottom plate to cover the installation space, and the heat dissipation wall 122 is also located in the installation space. The edge of the heat dissipation wall 122 near the shorter side of the heat dissipation base 121 is disposed on the heat dissipation base 121. This facilitates the stretching of the heat sink 12 from aluminum or aluminum alloy along the extending direction of the heat dissipating wall 122 by the stretching process, and also facilitates the arrangement of the electronic components by leaving a larger area on the heat dissipating base 121. In the present embodiment, the plurality of posts and the connector 14 are respectively arranged in parallel to each other along a direction substantially parallel to the extending direction of the heat dissipation wall 122, specifically, the plurality of posts are arranged along a direction parallel to the extending direction of the heat dissipation wall 122, and the length direction of the connector 14 is arranged parallel to the extending direction of the heat dissipation wall 122.

Meanwhile, the heat dissipation wall 122 further has a second step 1221 for supporting the PCB 13, the second step 1221 and the first step 152 are oppositely disposed, when the PCB 13 is fixedly installed in the installation space, the PCB 13 is fixed on the second step 1221 and the first step 152, and at this time, the PCB 13 is located above the heat dissipation base 121 and abuts against the heat dissipation wall 122.

In addition, referring to fig. 4, the sidewall 112 of the upper housing 11 has a continuously distributed sealing groove 119 at its edge away from the top wall 111, the first sealing member 19 is installed in the sealing groove 119, and when the heat dissipation base 121 covers the installation space, the first sealing member 19 abuts against the surface of the flat heat dissipation base 121, preventing external liquid from entering the installation space of the controller 10 through a gap between the upper housing 11 and the bottom plate.

With continued reference to fig. 2 and 3, a plurality of fets 131 are sequentially disposed on one side of the heat dissipation wall 122, and the other side of the heat dissipation wall 122 has a card slot 1222 on its surface. The heat dissipation wall 122 is used for transferring heat generated by the plurality of field effect transistors 131 during operation to the heat dissipation base 121 so as to dissipate the heat to an external space, thereby achieving good heat dissipation performance of the controller 10. Therefore, the elastic spring 20 is used to ensure the adhesion between the fets 131 and the heat dissipation wall 122, and the elastic spring 20 surrounds the heat dissipation wall 122 and is fixed on the heat dissipation wall 122 to achieve the adhesion between the fets 131 and the heat dissipation wall 122. Specifically, the plurality of field effect transistors 131 are sequentially disposed on one side of the heat dissipation wall 122; the PCB further has an elastic spring 20 made of a metal material such as an alloy containing manganese, and the elastic spring 20 has a first tongue pressing connector 21, a plurality of first tongue pressing 22 and a plurality of second tongue pressing 23, the plurality of first tongue pressing 22 and the plurality of second tongue pressing 23 are respectively connected to two sides of the first tongue pressing connector 21, the elastic spring 20 surrounds the heat dissipating wall 122 and is fixed on the heat dissipating wall 122, wherein the first tongue pressing connector 21 is located at a top of the heat dissipating wall 122, the plurality of first tongue pressing 22 is located at a side where the plurality of field effect transistors 131 are disposed, the plurality of second tongue pressing 23 is fixed at a side of the heat dissipating wall 122 opposite to the plurality of field effect transistors 131, the plurality of field effect transistors 131 are located between the plurality of first tongue pressing 22 and the heat dissipating wall 122, and the plurality of second tongue pressing 22 presses the plurality of field effect transistors 131 so that the plurality of field effect transistors 131 are attached to the heat dissipating wall 122. Meanwhile, the PCB 13 further includes an insulating plate 132, and the insulating plate 132 is disposed between the fet 131 and the heat dissipation wall 122 to insulate the fet 131 and the heat dissipation wall 122 from each other.

Referring to fig. 5, in another embodiment, a spring reed 20 'of a different structure is shown, the spring reed 20' having a second spatula connector 21 ', a third spatula 22' and a fourth spatula 23 ', the third spatula 22' and the fourth spatula 23 'being connected to both ends of the second spatula connector 21' respectively by a bent portion 24 ', and the third spatula 22' and the fourth spatula 23 'each further having a protruding portion 25' protruding toward the spatula connector. The protrusion 25 ' may be only disposed at the interface of the third and/or fourth pressing tongue 22 ' and the bent portion 24 ', and the protrusion 25 ' may increase the strength of the bent portion 24 '. The protruding portion 25 'may also extend from the bent portion 24' along the surface of the third and/or fourth tongue 22 ', 23'. When spring reed 20 'is installed on heat dissipation wall 122, spring reed 20' is located on one side of heat dissipation wall 122 where the plurality of fets 131 are located, and protrusion 25 'is inserted into card slot 1222 on the other side of heat dissipation wall 122 opposite to the plurality of fets 131, so as to install spring reed 20' on heat dissipation wall 122. At this time, the plurality of fets 131 are located between the resilient springs 20 'and the heat dissipating wall 122, and the second tongue-depressing connector 21' compresses the plurality of fets 131 so as to attach the plurality of fets 131 to the heat dissipating wall 122. When the spring reed 20 'is installed, it is optionally installed from the top of the heat dissipation wall 122 to the bottom, and it is understood that in some scenarios, the spring reed 20' may also be installed to the heat dissipation wall 122 from the side of the heat dissipation wall 122 having the fet 131. It will be appreciated that spring reed 20 'may also be secured to the heat sink wall in other ways, such as in other embodiments spring reed 20' is secured to the heat sink wall by fasteners such as bolts from the side of heat sink wall 122 or from the surface of heat sink wall 122 facing away from fet 131.

The edge of the second tongue depressor connector 21 ' further has a plurality of fins 211 ' distributed continuously, the fins 211 ' extend out of the edge of the second tongue depressor connector 21 ', when the protrusion 25 ' is clamped in the clamping groove 1222 of the heat dissipating wall 122, the plurality of fins 211 ' respectively press each fet 131, further, the fixed ends of the plurality of fins 211 ' are connected to the edge of the second tongue depressor connector 21 ', and the free ends of the plurality of fins 211 ' are bent in the direction of the third tongue depressor 22 ' and the fourth tongue depressor 23 ', so as to sufficiently press each fet 131 to the heat dissipating wall 122. Meanwhile, the PCB 13 further includes an insulating plate 132 ', and the insulating plate 132' is disposed between the fet 131 and the heat dissipation wall 122 to insulate the fet 131 and the heat dissipation wall 122 from each other. In addition, the inner surface of the bent portion 24 ' of the spring reed 20 ' also has an insulating pad 133 ', and the insulating pad 133 ' is located between the bent portion 24 ' and the side wall of the heat dissipation wall 122. This prevents the spring reed 20' from being displaced when it is attached, which could be too close to the side of the fet 131 or even short circuit when it hits the lead of the fet 131.

The fet 131 generates a large amount of heat when the controller assembly is operating, the elastic springs 20, 20' press the fet 131 against the heat dissipating wall 122, and the heat generated by the fet 131 can be transferred to the heat dissipating wall 122 and then transferred from the heat dissipating wall 122 to the heat dissipating base 121, thereby forming a heat dissipating channel of the fet 131.

In addition, the heat dissipation base 121 as a bottom plate further includes a mounting bracket 31 of several controllers located outside the mounting space and connected to the heat dissipation base, the mounting bracket 31 has a mounting hole 30 penetrating through the mounting bracket 31, and a fastener such as a bolt passes through the mounting hole 30 to mount the controller 10 on the mounting portion of the electric riding device. In this embodiment, the mounting brackets 31 are connected to the edges of the heat dissipation base 121 substantially parallel to the extending direction of the heat dissipation wall 122, and a plurality of the mounting brackets 31 are integrally formed with the heat dissipation wall 122 along the extending direction of the heat dissipation wall 122 through, for example, a stretching process.

In the present embodiment, the first sealing member 19 has a fixing hole 40 penetrating through the first sealing member 19, the heat dissipation base 121 as a base plate also has a through hole 50 penetrating through the heat dissipation base 121, the upper case 11 of the controller has a plurality of screw holes 60, and a fastener such as a bolt is screwed into the screw hole 60 through the fixing hole 40 and the through hole 50 to mount the heat dissipation base 121 to the upper case 11 so as to cover the mounting space, and fix the PCB 13 to the upper case 11 of the controller.

Therefore, compare with prior art, the utility model discloses the radiator as the bottom plate among the controller among the technical scheme is made by aluminium or aluminum alloy through tensile work along the direction tensile that the heat dissipation wall extends, and it has smooth tensile cross-section, conveniently arranges various structures on it. The radiator not only has better heat dispersion than the device that makes through the die casting technology to controller mounting hole and the second step portion on the heat dissipation wall that are connected to the heat dissipation base can all form through tensile technology, and it still has smooth sealed working face, is favorable to realizing good leakproofness. Simultaneously, through setting up the elasticity reed with field effect transistor and heat dissipation wall closely laminating each other to the heat dissipation wall sets up on the heat dissipation base, thereby realizes effectively discharging the heat that produces field effect transistor work. The controller is simple in structure, easy to produce and assemble, low in manufacturing cost and good in heat dissipation performance.

Claims (10)

1. A controller, comprising:

a housing having a top wall (111) and a side wall (112) connected to the top wall (111), the top wall (111) and the side wall (112) defining an installation space, the side wall (112) having a continuously distributed sealing groove (119) at an edge thereof remote from the top wall (111), a first sealing member (19) being installed in the sealing groove (119);

a printed circuit board (13) mounted in the mounting space;

one end of each binding post is fixed on the printed circuit board (13), and the other end of each binding post extends out of the shell;

a connector (14) mounted on the housing and electrically connected to the printed circuit board (13), the connector (14) having a length direction parallel to a board surface of the printed circuit board (13);

a heat sink (12) having a heat dissipation base (121) and a heat dissipation wall (122) perpendicular to the heat dissipation base (121), the heat sink (12) being stretch-formed of aluminum or an aluminum alloy, the plurality of posts being arranged parallel to a direction in which the heat dissipation wall (122) extends, a length direction of the connector (14) being parallel to a direction in which the heat dissipation wall (122) extends, the heat dissipation base (121) being mounted to the housing and the first seal member (19) abutting against a surface of the heat dissipation base (121) having the side of the heat dissipation wall (122).

2. The controller of claim 1, wherein the housing has a first opening (113) and a second opening (114) communicating with the mounting space, the top wall (111) has a first protrusion (115) and a second protrusion (116) protruding from an outer surface of the top wall (111), the first protrusion (115) and the second protrusion (116) have different heights, the first opening (113) and the second opening (114) are respectively disposed on the first protrusion (115) and the second protrusion (116), the first opening (113) and the second opening (114) are parallel to each other, the connector (14) is mounted to the first opening (113), and the plurality of terminals protrude from the second opening (114) out of the housing.

3. The controller of claim 2, wherein the controller (10) has a connector holder (15) fixed to the heat sink base (121), the connector (14) is mounted on the connector holder (15), the housing has a first sidewall (117) surrounding the first opening (113) at the first protrusion (115), the first sidewall (117) abuts against the connector (14), and a second seal (17) is provided between the first sidewall (117) and the connector (14).

4. The controller of claim 2, wherein the controller (10) has a terminal strip rack (16) mounted on the heat sink base (121), the plurality of terminals being secured to the terminal strip rack (16), the housing having a second sidewall (118) at the second boss (116) surrounding the second opening (114); the second side wall (118) abuts against the terminal bent (16), and a third sealing element (18) is arranged between the second side wall (118) and the terminal bent (16).

5. The controller of claim 3, wherein the connector (14) comprises an insulating body (141) and a plurality of conductive terminals mounted thereon, the plurality of conductive terminals being electrically connected to the printed circuit board (13), the insulating body (141) being mounted to the connector holder (15), the connector holder (15) having a first step portion (152) and a plurality of support columns (153) thereon, the heat dissipation wall (122) having a second step portion (1221) thereon disposed along a direction in which the heat dissipation wall (122) extends, the first step portion (152) and the second step portion (1221) being oppositely disposed, the first step portion (152), the plurality of support columns (153), and the second step portion (1221) supporting the printed circuit board (13).

6. The controller of claim 1, wherein the plurality of field effect transistors (131) are sequentially disposed at one side of the heat dissipation wall (122); the printed circuit board (13) is further provided with an elastic reed (20) which is provided with a first tongue pressing connecting body (21), a plurality of first tongue pressing bodies (22) and a plurality of second tongue pressing bodies (23), the plurality of first tongue pressing bodies (22) and the plurality of second tongue pressing bodies (23) are respectively connected to two sides of the first tongue pressing connecting body (21), the elastic reed (20) surrounds the heat dissipation wall (122) and is fixed on the heat dissipation wall (122), the first tongue pressing connecting body (21) is located at the top of the heat dissipation wall (122), the plurality of first tongue pressing bodies (22) are located on one side provided with the plurality of field effect tubes (131), the plurality of second tongue pressing bodies (23) are fixed on one side, opposite to the plurality of field effect tubes (131), of the plurality of field effect tubes (131) are located between the plurality of first tongue pressing bodies (22) and the heat dissipation wall (122), the second pressing tongues (23) press the field effect transistors (131) so that the field effect transistors (131) are attached to the heat dissipation wall (122).

7. The controller of claim 1, wherein the plurality of field effect transistors (131) are sequentially disposed at one side of the heat dissipation wall (122); the printed circuit board (13) further comprises an elastic spring (20 ') which is provided with a second tongue pressing connecting body (21 '), a third tongue pressing (22 ') and a fourth tongue pressing (23 '), wherein the third tongue pressing (22 ') and the fourth tongue pressing (23 ') are respectively connected to two ends of the second tongue pressing connecting body (21 ') through bending parts (24 '), the elastic spring (20 ') surrounds the heat dissipation wall (122) and is fixed on the heat dissipation wall (122), the second tongue pressing connecting body (21 ') is positioned on one side provided with the plurality of field effect transistors, the third tongue pressing (22 ') and the fourth tongue pressing (23 ') are fixed on one side of the heat dissipation wall (122) opposite to the plurality of field effect transistors (131), and the plurality of field effect transistors (131) are positioned between the second tongue pressing connecting body (21 ') and the heat dissipation wall (122), the second tongue-depressing connecting body (21') compresses the field effect transistors (131) so that the field effect transistors (131) are attached to the heat dissipation wall (122).

8. The controller of claim 1, wherein the controller (10) further comprises a plurality of mounting brackets (31) having mounting holes (30) therethrough, the plurality of mounting brackets (31) being disposed at edges of the heat dissipating base (121) parallel to an extending direction of the heat dissipating wall (122), the plurality of mounting brackets (31) being integrally formed with the heat sink (12), and fasteners passing through the mounting holes (30) to mount the controller (10) to a mounting location.

9. The controller of claim 1, wherein the heat-dissipating base (121) has a plurality of through holes (50), and the housing further has a plurality of threaded holes (60), and a bolt is inserted through the through holes (50) and screwed into the threaded holes (60) so that the heat-dissipating base (121) covers the installation space.

10. The controller according to any one of claims 1 to 9, applied to an electric riding device, wherein the heat sink (12) is formed by stretching aluminum or an aluminum alloy in a direction in which the heat dissipation wall (122) extends, the housing is made of plastic, and the plurality of terminals are electrically connected to terminals of an external device through fasteners, protruding from the other end of the housing.

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