CN112040755A

CN112040755A - Controller

Info

Publication number: CN112040755A
Application number: CN202011206409.0A
Authority: CN
Inventors: 王在辉
Original assignee: TIANJIN SANTROLL ELECTRIC SCIENCE & TECHNOLOGY CO LTD
Current assignee: TIANJIN SANTROLL ELECTRIC SCIENCE & TECHNOLOGY CO LTD
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2020-12-04
Anticipated expiration: 2040-11-03
Also published as: CN112040755B

Abstract

The invention discloses a controller, and relates to the technical field of electric vehicles. The controller comprises a shell, a circuit board, an MOS tube and a clamp spring, wherein the shell is of an internal hollow structure, and openings are formed in two ends of the shell; the circuit board is arranged in the shell; the MOS tube is arranged on the circuit board and can be abutted against the inner wall of the shell; the clamp spring comprises a U-shaped body, limiting parts connected to two opposite side walls of the U-shaped body and an elastic part, wherein one end of the elastic part is connected to the U-shaped body, and the other end of the elastic part inclines towards the direction of the opening of the U-shaped body; the limiting part can be inserted into the shell, and the elastic part can elastically deform to enable the MOS tube to be abutted against the inner wall of the shell. The MOS pipe can support the inner wall tightly at the casing through the elasticity portion, can improve the radiating effect of MOS pipe, prevents that the MOS pipe from burning out.

Description

Controller

Technical Field

The invention relates to the technical field of electric vehicles, in particular to a controller.

Background

The electric vehicle controller is a core control device used for controlling the starting, running, advancing and retreating, speed and stopping of a motor of the electric vehicle and other electronic devices of the electric vehicle. At present, electric vehicle controllers are all provided with a shell, the shell can protect a controller circuit board inside the shell and can also play a role in heat dissipation, and MOS (metal oxide semiconductor) tubes on the circuit board can dissipate heat. Most electric vehicle controller's MOS pipe can not closely laminate with the casing when fixed among the prior art, leads to the radiating effect of MOS pipe not good, can lead to the MOS pipe to burn out finally.

Disclosure of Invention

The invention aims to provide a controller, which can improve the heat dissipation effect of an MOS tube of the controller.

In order to achieve the purpose, the invention adopts the following technical scheme:

a controller, comprising:

the shell is of an internal hollow structure, and two ends of the shell are provided with openings;

a circuit board disposed within the housing;

the MOS tube is mounted on the circuit board and can be abutted against the inner wall of the shell;

the clamp spring comprises a U-shaped body, limiting parts connected to two opposite side walls of the U-shaped body and an elastic part, one end of the elastic part is connected to the U-shaped body, and the other end of the elastic part inclines towards the direction of the opening of the U-shaped body; the limiting portion can be connected with the shell in an inserting mode, and the elastic portion can elastically deform to enable the MOS tube to be tightly abutted to the inner wall of the shell.

Optionally, the inner wall of the housing is provided with a slot inserted into the U-shaped body, and the limiting portion is limited in the slot.

Optionally, the U-shaped body includes a first plate and two second plates connected to both sides of the first plate, the MOS transistor is located between the first plate and the inner wall of the housing, the elastic portion is disposed on the first plate, and the limiting portion is connected to the second plates.

Optionally, the elastic parts are multiple and arranged at intervals along the connecting line direction of the two second plates.

Optionally, the controller further comprises an upper cover and a lower cover, the upper cover and the lower cover are respectively located at two opposite ends of the housing and used for blocking the opening;

one of the upper cover and the lower cover is provided with a clamping protrusion, the other one is provided with a clamping groove, and the clamping protrusion can be connected with the clamping groove in a clamped mode.

Optionally, the upper cover interval is provided with a plurality of to the first extension that the lower cover direction extends, each first extension all is provided with the draw-in groove, the lower cover interval is provided with a plurality of to the second extension that the upper cover direction extends, each all be provided with on the outer wall of second extension the card is protruding, the draw-in groove with the protruding one-to-one of card, work as the card protruding with during the draw-in groove joint, the inner wall of first extension with the outer wall laminating of second extension.

Optionally, the inner wall of casing is provided with a plurality of first logical grooves, and is a plurality of first logical groove is with a plurality of first extension one-to-one, works as the card is protruding with when the draw-in groove joint, first extension is located first logical inslot.

Optionally, the lower cover is further provided with a plurality of first positioning posts at intervals, the inner wall of the shell is provided with a plurality of second through grooves, the second through grooves are in one-to-one correspondence with the first positioning posts, and when the clamping protrusion is clamped with the clamping groove, the first positioning posts are inserted into the second through grooves.

Optionally, the inner wall of the housing is provided with a plurality of second through grooves, the plurality of second through grooves correspond to the plurality of second positioning columns one to one, and when the clamping protrusions are clamped with the clamping grooves, the second positioning columns are inserted into the second through grooves.

Optionally, the housing is made of an aluminum profile.

The invention has the beneficial effects that: according to the controller provided by the invention, the MOS tube is arranged on the circuit board, and the MOS tube can be tightly abutted against the inner wall of the shell through the elastic part of the clamp spring, so that the heat dissipation effect of the MOS tube can be improved, the MOS tube is prevented from being burnt out, the elastic part can be elastically deformed, and the disassembly of the clamp spring can not be influenced under the condition of ensuring enough abutting force.

Drawings

FIG. 1 is an exploded view of a controller provided by an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of a controller provided by an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a clamp spring of a controller according to an embodiment of the present invention.

In the figure:

1-a shell; 11-a first through slot; 12-a second through slot; 13-a slot;

2-a circuit board;

3-covering the cover; 31-a card slot; 32-a first extension; 33-a second positioning column;

4-lower cover; 41-convex block; 42-a second extension; 43-a first positioning column;

5-MOS tube;

6-clamp spring; a 61-U-shaped body; 611-a first plate; 612-a second plate; 62-a limiting part; 63-elastic part.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1-3, the controller includes a housing 1, a circuit board 2, a MOS transistor 5 and a clamp spring 6, wherein the housing 1 is a hollow structure and has openings at two ends; the circuit board 2 is arranged in the shell 1; the MOS transistor 5 is mounted on the circuit board 2 and can abut against the inner wall of the housing 1; the clamp spring 6 comprises a U-shaped body 61, limiting parts 62 connected to two opposite side walls of the U-shaped body 61 and elastic parts 63, one end of each elastic part 63 is connected to the U-shaped body 61, and the other end of each elastic part is inclined towards the opening of the U-shaped body 61; the limiting portion 62 can be inserted into the housing 1 and the elastic portion 63 can tightly support the MOS transistor 5 against the inner wall of the housing 1. It can be understood that the MOS tube 5 is mounted on the circuit board 2, and the MOS tube 5 can be tightly abutted against the inner wall of the housing 1 through the elastic part 63 of the snap spring 6, so that the heat dissipation effect of the MOS tube 5 can be improved, and the MOS tube 5 is prevented from being burned out; in addition, the elastic part 63 can be elastically deformed to abut against the MOS transistor 5, and the detachment of the snap spring 6 can be prevented from being affected while ensuring sufficient abutting force.

In this embodiment, the housing 1 is configured as a rectangular structure, and the circuit board 2 is also configured as a rectangle. The specific structure of the circuit board 2 is already the prior art, and will not be described herein. In other embodiments, the housing 1 may have other shapes.

Optionally, the housing 1 is made of an aluminum profile. It can be understood that the aluminum profile is light in weight and good in heat conduction performance, and when the MOS tube 5 abuts against the inner wall of the shell 1, the heat dissipation of the MOS tube 5 is facilitated through the shell 1. In other embodiments, other materials may be selected for the housing 1.

Optionally, as shown in fig. 1, the controller further includes an upper cover 3 and a lower cover 4, where the upper cover 3 and the lower cover 4 are respectively located at two opposite ends of the housing 1 for blocking the opening; one of the upper cover 3 and the lower cover 4 is provided with a clamping protrusion 41, the other is provided with a clamping groove 31, and the clamping protrusion 41 can be clamped with the clamping groove 31. It can be understood that the circuit board 2 is placed in the hollow shell 1, and the openings at the two ends of the shell 1 are sealed by the upper cover 3 and the lower cover 4, so that the circuit board 2 can be prevented from being exposed outside the shell 1, and as the circuit board 2 is fixed with a plurality of wiring terminals and other structures, the circuit board 2 can be sealed in a containing cavity formed by the upper cover 3, the lower cover 4 and the shell 1 to play a role in protecting the circuit board 2, and the wiring terminals and other structures on the circuit board 2 are prevented from being damaged due to mistaken touch; meanwhile, the clamping cooperation of the clamping protrusion 41 and the clamping groove 31 can ensure simple and convenient installation between the upper cover 3 and the lower cover 4. In this embodiment, the locking protrusion 41 is provided on the lower cover 4, and the locking groove 31 is provided on the upper cover 3. In other embodiments, the locking protrusion 41 may be disposed on the upper cover 3, and the locking groove 31 may be disposed on the lower cover 4.

Specifically, the controller further comprises two sealing members which are respectively arranged on the opposite sides of the upper cover 3 and the lower cover 4 from the housing 1, and when the upper cover 3 and the lower cover 4 block the opening of the housing 1, the upper cover 3 and the housing 1 and the lower cover 4 and the housing 1 can respectively clamp the two sealing members. It can be understood that, after the upper cover 3, the lower cover 4 and the housing 1 are installed, the sealing and waterproof effects of the controller can be improved by providing the sealing member, and the internal circuit board 2 and other structures can be further protected. In this embodiment, the sealing member is a rubber ring, and in other embodiments, the sealing member may have other structures.

Optionally, the upper cover 3 is provided with a plurality of first extension portions 32 extending towards the lower cover 4 at intervals, each first extension portion 32 is provided with a clamping groove 31, the lower cover 4 is provided with a plurality of second extension portions 42 extending towards the upper cover 3 at intervals, each outer wall of each second extension portion 42 is provided with a clamping protrusion 41, the clamping grooves 31 correspond to the clamping protrusions 41 one by one, and when the clamping protrusions 41 are clamped with the clamping grooves 31, the inner wall of the first extension portion 32 is attached to the outer wall of the second extension portion 42. Specifically, since the housing 1 has a rectangular shape, the upper cover 3 and the lower cover 4 are also rectangular and have a size that can close the opening of the housing 1. In this embodiment, two first extending portions 32 are respectively arranged at intervals at the edges of two short sides and one long side of the upper cover 3, the other long side is provided with one first extending portion 32, each first extending portion 32 is vertically connected with the upper cover 3, and a second extending portion 42 is arranged at a position on the lower cover 4 opposite to the first extending portion 32, when the upper cover 3 and the lower cover 4 are clamped and matched, the first extending portion 32 and the second extending portion 42 can both extend into the belt housing 1, so that the clamping groove 31 and the clamping protrusion 41 can be positioned in the housing 1 after being clamped and connected, the appearance of the external structure of the controller can be ensured, and the upper cover 3 and the lower cover 4 can be prevented from being separated from the housing 1 due to mistaken touch after the clamping of the clamping groove 31 and the clamping protrusion 41; in addition, when the protruding portion 41 is engaged with the slot 31, the inner wall of the first extension portion 32 and the outer wall of the second extension portion 42 are attached to each other, so that the reliability of the protruding portion 41 and the slot 31 after engagement can be ensured. In other embodiments, the number of first and

second extensions

32, 42 may also be adapted.

In this embodiment, the edge of the upper cover 3, which is provided with the long sides of the two first extending portions 32, is further provided with a notch, the notch is located between the two first extending portions 32, and the notch is used for a lead of the circuit board 2. In other embodiments, the notch may be disposed at other positions of the upper cover 3.

Optionally, as shown in fig. 1, in order to further ensure the clamping effect of the clamping groove 31 and the clamping protrusion 41 and improve the structural stability of the controller, the inner wall of the housing 1 is provided with a plurality of first through grooves 11, the plurality of first through grooves 11 are in one-to-one correspondence with the plurality of first extending portions 32, and when the clamping protrusion 41 is clamped with the clamping groove 31, the first extending portions 32 are located in the first through grooves 11. It can be understood that, the number and the position of the first through grooves 11 correspond to the first extending portions 32 one by one, when the first extending portions 32 and the second extending portions 42 move towards each other and enter the housing 1, the first extending portions 32 can enter the corresponding first through grooves 11, the first through grooves 11 can guide the movement of the first extending portions 32 and also can limit the movement, and the structural stability of the controller is further improved. In the present embodiment, since the first extending portion 32 has a rectangular structure, the first through groove 11 is also provided with a rectangular groove. In other embodiments, the number and shape of the first through slots 11 may be adapted according to the first extension 32.

Optionally, in order to further ensure the clamping effect of the upper cover 3 and the lower cover 4, the lower cover 4 is further provided with a plurality of first positioning posts 43 at intervals, the inner wall of the housing 1 is provided with a plurality of second through grooves 12, the plurality of second through grooves 12 correspond to the plurality of first positioning posts 43 one by one, and when the clamping protrusion 41 is clamped with the clamping groove 31, the first positioning posts 43 are inserted into the second through grooves 12. Specifically, the upper cover 3 is provided with a plurality of second positioning columns 33 at intervals, the plurality of first positioning columns 43 correspond to the plurality of second positioning columns 33 one by one, and when the clamping protrusion 41 is clamped with the clamping groove 31, the second positioning columns 33 are inserted into the second through grooves 12. In this embodiment, two short sides of the upper cover 3 are provided with one second positioning column 33, the second positioning columns 33 are located between the two first extending portions 32 at intervals, the long sides provided with the two first extending portions 32 are provided with two second positioning columns 33, the two second positioning columns 33 and the two first extending portions 32 are located at intervals, and the two second positioning columns 33 are located between the two first extending portions 32 and located on two sides of the gap; correspondingly, the first positioning posts 43 are disposed at the positions of the lower cover 4 corresponding to the second positioning posts 33, wherein the first positioning posts 43 are vertically connected with the lower cover 4, the second positioning posts 33 are vertically connected with the upper cover 3, and the extending directions of the first positioning posts 43 and the second positioning posts 33 are respectively the same as the extending directions of the second extending portions 42 and the first extending portions 32. When draw-in groove 31 and the protruding 41 joint of card, first reference column 43 and second reference column 33 homoenergetic insert the second and lead to the groove 12 in, can further lead and fix a position draw-in groove 31 and the protruding 41 joint cooperation of card, guarantee the joint effect.

In this embodiment, the first positioning column 43 and the second positioning column 33 are both circular positioning columns with the same size, and the second through groove 12 is a circular groove. In other embodiments, the first positioning column 43 and the second positioning column 33 may also be selected from other shapes such as a square shape, and the shape of the second through slot 12 may be adaptively set according to the shapes of the first positioning column 43 and the second positioning column 33.

Optionally, the inner wall of the housing 1 is provided with a slot 13 inserted into the U-shaped body 61, and the position-limiting portion 62 is limited in the slot 13. It can be understood that the limiting part 62 is matched with the slot 13 in an inserting manner, so that the clamp spring 6 can be conveniently disassembled and assembled.

Alternatively, as shown in fig. 3, the U-shaped body 61 includes a first plate 611 and two second plates 612 connected to both sides of the first plate 611, the MOS transistor 5 is located between the first plate 611 and the inner wall of the housing 1, the elastic part 63 is disposed on the first plate 611, and the position-limiting part 62 is connected to the second plate 612. It can be understood that the first plate 611 and the two second plates 612 form a U-shaped body 61, and the MOS transistor 5 is placed in the accommodating space of the U-shaped body 61 and can abut against the elastic portion 63, and abuts against the inner wall of the housing 1 under the abutting force of the elastic portion 63. Specifically, the elastic portion 63 is plural and is provided at intervals in the direction of connecting the two second plates 612. In this embodiment, the elastic portions 63 are two, and the two elastic portions 63 can act on the two MOS transistors 5 simultaneously, or can ensure that the abutting force is larger when acting on one MOS transistor 5, so that the MOS transistor 5 is not easily separated from the housing 1, and the heat dissipation effect is ensured. In other embodiments, the number of the elastic portions 63 may be adaptively adjusted to one, three, four, or the like according to the use case.

In this embodiment, the extending directions of the two limiting portions 62 are the same as the extending direction of the first plate 611, and the orientations of the two limiting portions 62 are opposite, that is, the limiting portion 62 and the connected second plate 612 form an L-shaped structure, and relatively, the slot 13 is also set to an L-shaped structure, that is, the slot includes a first groove and a second groove which are vertically connected, when the snap spring 6 is in inserting fit with the housing 1, the limiting portion 62 is in inserting fit with the first groove, and the second plate 612 is in inserting fit with the second groove, and when the snap spring 6 is in inserting fit with the housing 1, the L-shaped structure formed by the limiting portion 62 and the second plate 612 can ensure that the snap spring 6 is not separated from the housing 1. In other embodiments, the position-limiting portion 62 and the connected second plate 612 may also form a T-shaped structure, and correspondingly, the slot 13 may also be a T-shaped slot. In this embodiment, the slot 13 is disposed on the side wall of the casing 1 where the first through groove 11 is disposed, and is disposed at an interval from the first through groove 11 and the second through groove 12, so that when the limiting portion 62 of the snap spring 6 is located in the slot 13, the clamping between the upper cover 3 and the lower cover 4 is not affected. In other embodiments, the position of the slot 13 may also be adapted.

As shown in fig. 1 and 2, the controller in this embodiment is further provided with connecting lugs at two opposite sides of the lower cover 4, the connecting lugs are provided with connecting holes, and the controller can be fixed by bolts passing through the connecting holes. In other embodiments, the controller may be directly fixed by the lower cover 4 without providing the engaging lug.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A controller, comprising:

the shell (1) is of an internal hollow structure, and two ends of the shell (1) are provided with openings;

a circuit board (2), the circuit board (2) being disposed within the housing (1);

the MOS tube (5) is mounted on the circuit board (2) and can be abutted against the inner wall of the shell (1);

the clamp spring (6) comprises a U-shaped body (61), limiting parts (62) connected to two opposite side walls of the U-shaped body (61), and elastic parts (63), one end of each elastic part (63) is connected to the U-shaped body (61), and the other end of each elastic part inclines towards the direction of an opening of the U-shaped body (61); the limiting portion (62) can be connected with the shell (1) in an inserting mode, and the elastic portion (63) can elastically deform to enable the MOS tube (5) to be tightly abutted to the inner wall of the shell (1).

2. The controller according to claim 1, characterized in that the inner wall of the housing (1) is provided with a slot (13) which is inserted into the U-shaped body (61), and the limiting part (62) is limited in the slot (13).

3. The controller according to claim 1, wherein the U-shaped body (61) comprises a first plate (611) and two second plates (612) connected to both sides of the first plate (611), the MOS transistor (5) is located between the first plate (611) and an inner wall of the case (1), the elastic part (63) is provided to the first plate (611), and the stopper part (62) is connected to the second plate (612).

4. A controller according to claim 3, wherein the elastic part (63) is plural and arranged at intervals along a direction of a line connecting the two second plates (612).

5. The controller according to claim 1, further comprising an upper cover (3) and a lower cover (4), wherein the upper cover (3) and the lower cover (4) are respectively located at two opposite ends of the housing (1) for blocking the opening;

the upper cover (3) with be equipped with card protruding (41) on one of them of lower cover (4), be equipped with draw-in groove (31) on another, card protruding (41) can with draw-in groove (31) joint.

6. The controller according to claim 5, characterized in that a plurality of first extending portions (32) extending towards the lower cover (4) are arranged on the upper cover (3) at intervals, each first extending portion (32) is provided with the clamping groove (31), a plurality of second extending portions (42) extending towards the upper cover (3) are arranged on the lower cover (4) at intervals, each clamping protrusion (41) is arranged on the outer wall of each second extending portion (42), the clamping grooves (31) correspond to the clamping protrusions (41) in a one-to-one mode, and when the clamping protrusions (41) are clamped with the clamping grooves (31), the inner walls of the first extending portions (32) are attached to the outer walls of the second extending portions (42).

7. The controller according to claim 6, wherein the inner wall of the housing (1) is provided with a plurality of first through grooves (11), the plurality of first through grooves (11) correspond to the plurality of first extending portions (32) one by one, and when the clamping protrusion (41) is clamped with the clamping groove (31), the first extending portions (32) are located in the first through grooves (11).

8. The controller according to claim 5, wherein the lower cover (4) is further provided with a plurality of first positioning posts (43) at intervals, the inner wall of the housing (1) is provided with a plurality of second through grooves (12), the plurality of second through grooves (12) correspond to the plurality of first positioning posts (43) one by one, and when the clamping protrusion (41) is clamped with the clamping groove (31), the first positioning posts (43) are inserted into the second through grooves (12).

9. The controller according to claim 8, wherein a plurality of second positioning posts (33) are arranged on the upper cover (3) at intervals, a plurality of first positioning posts (43) correspond to the plurality of second positioning posts (33) one by one, and when the clamping protrusions (41) are clamped with the clamping grooves (31), the second positioning posts (33) are inserted into the second through grooves (12).

10. A control according to claim 1, characterised in that the housing (1) is made of aluminium section.