TWI416059B - Combined cooling device for electric vehicle controller - Google Patents

Abstract

An assembled heat-dissipating device of an electric vehicle controller is disclosed, which includes at least one casing, an inner cover, an outer cover and a heat-dissipating board; inside the casing there is an accommodating space, at the opposite sides of which are formed with a first and a second opening coupled to the accommodating space; the inner cover and outer cover are detachably locked on the first and second openings of the casing; a heat-dissipating board can be set within the accommodating space, and a control circuit board is mounted on the heat-dissipating board. By separately replacing the inner cover or outer cover, the heat-dissipating device can be used in a variety of vehicle frames, and one of the mounting holes on the casing can be used to mount the upper and lower clips made of slightly flexible plastic material, wherein a terminal seat is clipped between the upper and lower clips in order to have a good sealing effect between the terminal seat and the mounting holes for preventing external moisture, dust and other foreign objects from entering into the casing through the mounting holes.

Description

Combined heat sink for electric vehicle controller

The present invention relates to a heat sink, and more particularly to a combined heat sink for an electric vehicle controller.

In general, if the general public wants to commute to work, go to class, or go out, in addition to using mass transit vehicles, it is most common to use steam and locomotive as the main means of transportation. With the advancement of technology, electric vehicles have been developed, using electric energy as Its source of power.

A general electric vehicle has a control circuit board that connects a plurality of power lines and control signal lines. When the control circuit board is in operation, high temperature is generated, and if the temperature is too high, the electronic components on the control circuit board are damaged.

Referring to FIG. 4, in order to prevent the control circuit board 92 from being damaged by high temperature, the control circuit board 92 is usually housed inside a heat sink, and the heat sink mainly comprises a box body 90 and a box cover 91.

The box body 90 is an integrally formed member having an accommodating space therein and a side surface forming an opening communicating with the accommodating space. The box cover 91 is detachably locked to the opening of the box body 90. And the control circuit board 92 is housed in the accommodating space. A heat dissipation plate 903 is integrally formed on the inner surface of the casing 90, and a side wall 902 is formed in one of the side walls of the casing 90 so that the power line and the control signal line of the control circuit board 92 can pass through a lead frame. The set aperture 902 is externally connected to a corresponding electronic device. In order to improve the heat dissipation efficiency, heat dissipation fins 901 and 911 may be further formed on the outer surface of the casing 90 and the cover 91.

When the control circuit board 92 is placed inside the casing 90 and coupled to the heat dissipation plate 903, the control circuit board 92 and the heat dissipation plate 903 can be in contact with each other, so that the high temperature generated by the control circuit board 92 can be conducted to the box. The body 90, the cover 91 and the heat dissipating fins 901 and 911 are provided with a heat dissipating function by the heat dissipating device to prevent the control circuit board 92 from being damaged due to high temperature.

However, conventional heat sinks have the following disadvantages:

1. The conventional lead frame is generally made of a metal material, and the lead frame and the frame 90 are not tightly coupled, which may cause foreign matter such as moisture, dust, and the like to enter the inside of the case through the gap between the lead frame and the case 90, possibly This causes the control circuit board to malfunction 92.

2. The heat dissipation efficiency of the control circuit board 92 of each electric vehicle is different. The arrangement density, height, thickness or material of the heat dissipation fins also have different designs. However, the casing 90, the heat dissipation plate 903 and the heat dissipation thereof are provided. The tabs 901 are integrally formed and are not detachable, so that only a fixed heat dissipation efficiency can be provided. Therefore, the existing heat sink cannot adjust the heat dissipation efficiency according to different control circuit boards.

3. Since each electric vehicle is designed with a separate heat sink for locking on the frame, and different styles of frames and heat sinks cannot be used interchangeably, the vehicle manufacturer must develop different heat sinks for different electric vehicles. Therefore, different molds must be designed to manufacture different casings 90 and lids 91 for locking on different frames, resulting in increased costs.

In view of the conventionally formed heat dissipating device, the lead seat and the casing are made of a metal material and cannot be closely engaged, so that foreign matter such as moisture, dust, and the like enters the inside of the casing through the gap between the lead frame and the casing, and The utility model can only be locked on a single style frame, and the heat dissipation plate and the heat dissipation fin integrally formed on the casing cannot be replaced separately, and different heat dissipation devices must be developed for different styles of the frame, which is costly, and the invention provides A combined heat dissipating device for an electric vehicle controller includes: a casing made of a metal material having an accommodating space therein and forming a first opening and a second opening respectively on opposite sides, the casing The side wall defines a first installation hole and a second installation hole; an inner cover is detachably assembled to the first opening of the housing; and an outer cover is detachably assembled to the housing a second opening, the outer surface of the outer cover is formed with a heat dissipating portion; a heat dissipating plate is disposed inside the casing and can be assembled and assembled on the inner side surface of the outer cover, the heat dissipating plate is for contacting a control circuit Board, the control The plate includes a heating element; an upper clamping portion and a lower clamping portion are disposed in the first setting hole, and a terminal seat is sandwiched between the upper clamping portion and the lower clamping portion, wherein the upper clamping portion and the lower portion The clip portion is made of a plastic material; a lead frame is connected to the power supply line in the second setting hole.

Thereby, the combined heat sink of the electric vehicle controller of the present invention has at least the following advantages:

1. The terminal block and the casing are made of metal material, and the upper clamping part and the lower clamping part are slightly elastic plastic materials, because the terminal seat is sandwiched by the slightly elastic upper and lower clamping parts in the casing. The first hole is disposed in the first hole, so that the joint relationship can achieve a tight joint effect, and the upper clamp portion and the lower clamp portion can prevent foreign matter such as moisture, dust and the like from entering the inside of the casing through the first installation hole.

2. Since the heat dissipating device is locked on the frame by the threaded holes of the fixing studs on the inner cover, and the inner cover and the shell are detachably locked to each other, the inner cover can be adapted according to the requirements of various frames. The size, shape or position of the threaded hole of the fixing stud is changed, so that the invention can easily integrate the heat sink into the corresponding frame by simply replacing the inner cover.

3. The shape of the heat dissipating part on the outer cover is independently designed and manufactured according to the heat dissipation requirements of different control circuit boards, and the outer cover and the shell are detachably locked to each other, so that the heat dissipation requirements of the different control circuit boards can be separately Disassemble the replacement cover to meet the heat dissipation requirements of different control boards.

Referring to FIG. 1 , the present invention is a combined heat sink of an electric vehicle controller, which can accommodate a control circuit board 80 for providing heat dissipation operation. The combined heat sink of the present invention comprises: a housing 10 , which is The metal material, for example, an aluminum alloy, has a first opening 11 and a second opening 12 formed in a space with an accommodating space therebetween. The side wall of the housing 10 has a heat dissipation fin 13 and one of the side walls 14 can be formed. a first setting hole 15 and a second setting hole 16, wherein a circumference of the first setting hole 15 is formed with a groove 17; an inner cover 20 is made of a metal material such as an aluminum alloy, and the inner cover 20 is detachable The first opening 11 of the housing 10 is formed in a group. The two sides of the inner cover 20 are formed with a plurality of fixing protrusions 21, and the end faces of the fixing protrusions 21 on the outer side surface of the inner cover 20 are formed with screw holes. 22, the threaded hole 22 is oriented toward a frame for locking on the frame; An outer cover 30 is made of a metal material, such as an aluminum alloy, and the outer cover 30 is detachably locked to the second opening 12 of the housing 10, and a heat dissipation portion 31 is formed on the outer side of the outer cover 30. The inner side surface is formed with a plurality of positioning protrusions 32 having a threaded hole 33. The heat dissipating portion 31 is a plurality of metal tabs in the embodiment, such as an aluminum alloy tab. A plurality of locking holes 34 are formed. A heat dissipation plate 40 is made of a metal material, such as an aluminum alloy. The heat dissipation plate 40 includes a plurality of positioning holes 41 and a plurality of locking holes 42. The heat dissipation plate 40 is disposed on the housing. The position of the locking hole 42 corresponds to the locking hole 34 on the outer cover 30; an upper clamping portion 50 and a lower clamping portion 51 are a slightly elastic plastic material block, and are disposed on the shell In the first setting hole 15 of the body 10, a terminal block 52 is sandwiched between the upper clamping portion 50 and the lower clamping portion 51. The terminal block 52 is made of a metal material, such as an aluminum alloy, and has an outer connecting portion. 521 and an inner connecting portion 522, between the two connecting portions 521, 522 has a card slot 523; wherein the top of the upper clamping portion 50 and The upper side of the lower clamping portion 50 is inserted into the groove 17 of the terminal portion 52; The bottom portion is formed with the lower rib 511 so as to be inserted into the groove 17 of the opposite side of the first installation hole 15. The top edge of the lower nip 51 is inserted into the slot 523 of the terminal block; a lead frame 60 is fastened to In the second installation hole 16, a plurality of through-hole holes 61 are formed in the lead frame 60, and at least three lead holes 61 are provided in this embodiment.

A first sealing gasket 70 may be further disposed between the inner cover 20 and the casing 10; a second sealing gasket 71 may be disposed between the outer cover 30 and the casing 10, and the sealing gaskets 70 and 71 may be The inner cover 20, the casing 10 and the outer cover 30 are more closely joined to prevent foreign matter such as moisture, dust, and the like from entering the accommodating space.

Since the terminal block 52 and the housing 10 are made of a metal material, and the upper clamping portion 50 and the lower clamping portion 51 are made of a resilient plastic material, a tight bonding effect can be achieved by the bonding relationship, and the terminal block 52 passes through the upper clamping portion. The lower clamping portion 51 can be more stably disposed in the first installation hole 15 , and the upper clamping portion 50 and the lower clamping portion 51 can prevent foreign matter such as moisture, dust and the like from entering the shell through the first setting hole 15 . Inside the body 10.

Referring to FIG. 2, the positioning hole 41 of the heat dissipation plate 40 is disposed through the positioning protrusion 32 of the outer cover 30. The locking hole 42 of the heat dissipation plate 40 is used to lock the heat dissipation plate 40 by using a locking component. The locking hole 34 of the outer cover 30. Since the control circuit board 80 includes a plurality of locking holes 81 and electronic components 82, such as a power transistor (MOS), the electronic component 82 is a heat generating component, and the locking member 83 can be locked through the control circuit board 80. The hole 81 is locked to the threaded hole 33 of the positioning post 32 of the outer cover 30, wherein the electronic components 82 (heat generating elements) are in contact with the heat dissipation plate 40, and the heat dissipation plate The other side of the cover 40 also contacts the inner side of the outer cover 30.

Referring to FIG. 3 , in actual application, the present invention comprises the housing 10 , the inner cover 20 and the outer cover 30 being combined into a heat dissipating device 100 . The heat dissipating device 100 is locked and fixed by a fixing post 21 on the inner cover 20 . The side surface of the frame 101 is located below the seat cushion 102. The heat dissipating portion 31 of the outer cover 30 faces the outer side of the frame 101. After assembling the vehicle body cover 103, the heat dissipating portion 31 of the heat dissipating device 100 has a large area. Exposed to the body cover 103, and has a good ventilation and heat dissipation effect.

Since the electronic component 82 (heating component) generates thermal energy when the control circuit board 80 is energized, the generated thermal energy can transmit thermal energy to the housing 10, the outer cover 30, and through the housing 10 through the heat dissipation plate 40. The heat dissipating fins 11 increase the heat dissipating area, so that the heat generated by the control circuit board 80 can be conducted to the outside of the heat dissipating device 100 to achieve a good heat dissipating effect.

The inner cover 20 of the present invention is a single component that can be independently designed and manufactured. The heat dissipating device 100 is fixed to the frame 101 by the fixing protrusions 21 on the inner cover 20, and the inner cover 20 and the housing 10 are detachably locked to each other. The inner cover 20 can change the size, shape or position of the fixing protrusions 21 according to the requirements of various frames 101 to produce a plurality of different types of inner covers 20. Therefore, only a suitable inner cover 20 is required. It is convenient to incorporate the heat sink into the corresponding frame 101.

In addition, the outer cover 30 itself is also a single component, which can be independently designed and manufactured, and the outer cover 30 and the housing 10 are detachably locked to each other, so that the outer cover 30 can control the heat dissipation required by the circuit board 80 according to various different conditions. The structure of the heat dissipating portion 31 is changed according to the demand for efficiency, and a plurality of different outer covers 30 are formed. For example, when the heat dissipating portion 31 is a metal rib, the arrangement density, height, thickness, or material of the metal rib can be changed. The utility model can cooperate with the structural appearance and the heat dissipation requirement of the frame 101 to be installed, and prevents the heat dissipation device 100 from damaging the overall design of the frame 101 and improving the heat dissipation requirement.

The control circuit board 80 of the electric vehicle is housed inside the casing 10 and fixedly coupled to the heat dissipation plate 40. The control circuit board 80 can electrically connect a plurality of power lines and control signal lines, wherein the power lines can pass through the outside. The lead hole 61 on the lead frame 60 is connected to the control circuit board 80, and the sealant can be further applied between the power supply line and the lead hole 61 to obtain a better waterproof adhesion effect.

Since the terminal block 52 is electrically connected to the control circuit board 80 disposed inside the casing 10, the control signal line located outside the casing 10 can be directly connected to the terminal block 52 to be controlled with the control circuit board 80. The signal transmission, for example, the ends of the control signal lines can be collectively connected to a connector, and the connector is correspondingly inserted into the terminal block 52. Since the power lines and the control signal lines are separately disposed with the lead frame 60 and the terminal block 52, the arrangement of the circuit of the control circuit board 80 can be more planned, which is beneficial to subsequent repair operations. When performing the test, it is judged by visual condition that the wire or control signal line should be checked.

In summary, the present invention achieves at least the following advantages:

1. The terminal block and the casing are made of metal material, and the upper clamping part and the lower clamping part are slightly elastic plastic materials, because the terminal seat is sandwiched by the slightly elastic upper and lower clamping parts in the casing. The first hole is disposed in the hole, so that the bonding relationship can achieve a close effect, and the upper clamping portion and the lower clamping portion can prevent foreign matter such as moisture, dust and the like from entering the inside of the casing through the first installation hole.

2. Since the heat dissipating device is locked on the frame by the threaded holes of the fixing studs on the inner cover, and the inner cover and the shell are detachably locked to each other, the inner cover can be adapted according to the requirements of various frames. The size, shape or position of the threaded hole of the fixing stud is changed, so that the invention can easily integrate the heat sink into the corresponding frame by simply replacing the inner cover.

3. The shape of the heat dissipating portion on the outer cover is independently designed and manufactured according to the heat dissipation requirements of different control circuit boards, and the outer cover and the shell are detachably locked to each other. Solid, so the replacement cover can be separately removed according to the heat dissipation requirements of different control boards to meet the heat dissipation requirements of different control boards.

10‧‧‧shell

11‧‧‧ first opening

12‧‧‧ second opening

13‧‧‧heating fins

14‧‧‧ side wall

15‧‧‧First setting hole

16‧‧‧Second setting hole

17‧‧‧ trench

20‧‧‧ inner cover

21‧‧‧Fixed studs

22‧‧‧Threaded holes

30‧‧‧ Cover

31‧‧‧ Department of heat dissipation

32‧‧‧Positioning studs

33‧‧‧Threaded holes

34‧‧‧Lock hole

40‧‧‧heating plate

41‧‧‧Positioning holes

42‧‧‧Lock hole

50‧‧‧Upper section

501‧‧‧With ribs

51‧‧‧ lower clip

511. . . Lower rib

52. . . Terminal Block

521. . . External connection

522. . . Inner connection

523. . . Card slot

60. . . Lead frame

61. . . Lead hole

70. . . First sealing washer

71. . . Second sealing gasket

80. . . Control board

81. . . Locking hole

82. . . Electronic component

83. . . Lock firmware

90. . . Box

901. . . Heat sink tab

902. . . Set hole

903. . . Radiating plate

91. . . Cover

911. . . Heat sink tab

92. . . Control board

100. . . Heat sink

101. . . Frame

102. . . Seat cushion

103. . . Body cover

Figure 1 is an exploded perspective view of a combined heat sink of the electric vehicle controller of the present invention.

2 is a cross-sectional view of a combined heat sink of the electric vehicle controller of the present invention.

Figure 3 is a diagram showing the state of use of the combined heat sink of the electric vehicle controller of the present invention.

Figure 4: An exploded perspective view of a conventional heat sink.

10‧‧‧shell

11‧‧‧ first opening

12‧‧‧ second opening

13‧‧‧heating fins

14‧‧‧ side wall

15‧‧‧First setting hole

16‧‧‧Second setting hole

17‧‧‧ trench

20‧‧‧ inner cover

21‧‧‧Fixed studs

22‧‧‧Threaded holes

30‧‧‧ Cover

31‧‧‧ Department of heat dissipation

32‧‧‧Positioning studs

33‧‧‧Threaded holes

34‧‧‧Lock hole

40‧‧‧heating plate

41‧‧‧Positioning holes

42‧‧‧Lock hole

50‧‧‧Upper section

501‧‧‧With ribs

51‧‧‧ lower clip

511‧‧‧Under ribs

52‧‧‧ terminal block

521‧‧‧External connection

522‧‧‧Internal connection

523‧‧‧ card slot

60‧‧‧ lead frame

61‧‧‧ lead hole

70‧‧‧First sealing gasket

71‧‧‧Second sealing gasket

80‧‧‧Control Board

81‧‧‧Lock hole

82‧‧‧Electronic components

83‧‧‧Locker

Claims (9)

A combined heat sink for an electric vehicle controller is a control circuit board for accommodating an electric vehicle. The heat dissipating device comprises: a casing, which is made of metal and has an accommodation space therein. And forming a first opening and a second opening respectively on the opposite sides, the sidewall of the housing forming a first installation hole and a second installation hole; an inner cover is detachably assembled to the housing a first opening, and a plurality of fixing protrusions are formed, each fixing protrusion is provided with a threaded hole in a direction of a frame of the electric vehicle for locking on the frame; and an outer cover is detachably assembled a heat dissipation portion is formed on the outer surface of the outer cover; the heat dissipation plate is disposed on the inner side of the outer cover and is coupled to the inner side of the outer cover. Providing contact with the control circuit board; an upper clamping portion and a lower clamping portion are disposed in the first setting hole, and a terminal block is sandwiched between the upper clamping portion and the lower clamping portion, wherein the upper clamping portion And the lower clip is made of plastic material; a lead seat is set in the second setting In the power supply line is connected. The combined heat sink of the electric vehicle controller according to the first aspect of the invention, wherein: the inner side of the outer cover is formed with a plurality of positioning protrusions, and each positioning protrusion is provided with a threaded hole toward the control circuit board; The heat dissipation plate includes a plurality of positioning holes and a plurality of locking holes, wherein the positioning holes are provided through the positioning protrusions of the outer cover, and the locking holes are used for locking the heat dissipation plate to the outer cover; Wherein, the control circuit board includes a plurality of locking holes, and is locked by the locking holes of the control circuit board to the threaded holes of the positioning protrusions of the outer cover, and the control circuit board The heating element is in contact with the heat sink. The combined heat sink of the electric vehicle controller of claim 1 or 2, wherein a first sealing gasket is disposed between the casing and the inner cover; a second is disposed between the casing and the outer cover Sealing gasket. The combined heat sink of the electric vehicle controller according to claim 1, wherein the inner cover, the outer cover and the heat dissipation plate are made of metal. The combined heat sink of the electric vehicle controller according to claim 1 or 4, wherein the casing, the inner cover and the outer cover are made of an aluminum alloy. The combined heat sink of the electric vehicle controller according to claim 1, wherein the terminal block has a card slot. The combined heat sink of the electric vehicle controller according to the sixth aspect of the invention, wherein the top portion and the two sides of the upper clamping portion form upper coupling ribs corresponding to the grooves embedded in the first installation hole, and The bottom edge of the upper clamping portion is inserted into the slot of the terminal block; the two sides of the lower clamping portion form a lower coupling rib to fit into the groove of the first installation hole, and the top edge of the lower clamping portion is Insert into the slot of the terminal block. The combined heat sink of the electric vehicle controller according to claim 1, wherein the lead frame is formed with a plurality of lead wires through which the power supply wires are passed. The heat dissipating device of the electric vehicle controller according to the first aspect of the invention, wherein the heat dissipating portion of the outer cover is a heat dissipating fin, and the side wall of the casing is provided with a heat dissipating fin.