CN211557840U

CN211557840U - Controller

Info

Publication number: CN211557840U
Application number: CN202020488659.7U
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: 2020-04-07
Filing date: 2020-04-07
Publication date: 2020-09-22
Anticipated expiration: 2030-04-07

Abstract

The utility model relates to the technical field of controllers, and discloses a controller, which comprises a shell, a printed circuit board arranged in the shell, a heating element welded on the printed circuit board, and a heat dissipation element arranged in the shell and fixed relative to the shell; and the elastic fixing piece can generate elastic deformation so as to clamp the heating element and the heat dissipation element in the elastic fixing piece and enable the heating element and the heat dissipation element to be mutually abutted. The heating element is welded on the printed circuit board, the elastic deformation of the elastic fixing piece is utilized to clamp the heating element and the radiating element in the elastic fixing piece, so that the heating element and the radiating element are mutually abutted, and the heat generated by the working of the heating element is transferred to the shell through the radiating element and then radiated to the outer side of the shell, thereby improving the radiating stability and prolonging the service life of the heating element; the fixing mode of the heating element is simple, the stability is good, and the problem that the connection between the heating element and the radiating element is easy to loose due to vibration is avoided.

Description

Controller

Technical Field

The utility model relates to a controller technical field especially relates to a controller.

Background

An electric vehicle controller generally mainly comprises a housing and a printed circuit board disposed in the housing, and the controller often includes many heat-generating elements, such as MOS transistors.

In the prior art, the MOS transistor is generally fixed to a heat dissipation element on the housing by screws or pressing bars, so as to achieve heat dissipation of the MOS transistor. However, the screws or the battens are easily loosened due to frequent vibration during the driving of the electric vehicle, so that the connection between the MOS transistor and the heat dissipation element is loosened, the relative position between the MOS transistor and the heat dissipation element is changed, and the heat dissipation effect of the MOS transistor is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a controller to solve because of the vibration makes the connection between heating element and the radiating element not hard up and reduce the problem of radiating effect.

To achieve the purpose, the utility model adopts the following technical proposal:

a controller, includes the shell, locates the printed circuit board in the shell, and weld in the heating element of printed circuit board, still includes:

the heat dissipation element is arranged in the shell, is fixed relative to the shell and is used for dissipating heat of the heating element;

the elastic fixing piece can elastically deform so as to clamp the heating element and the heat dissipation element in the elastic fixing piece and enable the heating element and the heat dissipation element to be mutually abutted.

As a preferable technical solution of the controller, the heat generating element and the heat dissipating element are parallel to each other and have a zero interval.

As a preferred technical solution of the above controller, the elastic fixing member includes a positioning portion, a connecting portion and an elastic portion, which are connected in sequence, and the positioning portion and the elastic portion are disposed on the same side of the connecting portion and are disposed opposite to each other to form an abutting cavity with an opening at one end;

one end of the heating element and one end of the radiating element are inserted into the abutting cavity and clamped between the positioning part and the elastic part.

As a preferable technical solution of the above controller, one of the heat dissipation element and the positioning portion is provided with a slot, and the other is provided with a protrusion capable of being inserted into the slot.

As a preferable technical solution of the controller, one end of the elastic portion, which is not connected to the connecting portion, is inclined to a side where the positioning portion is located.

As a preferable technical solution of the controller, the heat dissipation element abuts against an inner wall of the connection portion that encloses the abutment cavity.

As a preferable aspect of the controller, one end of the elastic portion, which is not connected to the connecting portion, is provided with a guide portion for guiding the heating element when the heating element is inserted into the abutting cavity.

As a preferred technical solution of the above controller, the heating element includes a plurality of MOS transistors arranged in sequence;

the elastic part comprises at least one antenna, and each antenna is mutually abutted with at least one MOS tube.

As a preferable technical solution of the above controller, the elastic fixing member is provided with at least two.

As a preferable technical solution of the above controller, the housing includes an upper housing and a lower housing that is engaged with the upper housing to form an installation space.

The utility model has the advantages that: the heating element is welded on the printed circuit board, the elastic deformation of the elastic fixing piece is utilized to clamp the heating element and the radiating element in the elastic fixing piece, so that the heating element and the radiating element are mutually abutted, and the heat generated by the working of the heating element is transferred to the shell through the radiating element and then radiated to the outer side of the shell, thereby improving the radiating stability and prolonging the service life of the heating element; the fixing mode of the heating element is simple, and the stability is good, so that the problem that the connection between the heating element and the radiating element is easy to loose due to vibration is effectively avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

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

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

fig. 3 is a partial cross-sectional view of a controller provided by an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an elastic fixing member according to an embodiment of the present invention.

In the figure:

1. a housing; 11. an upper housing; 111. a clamping hole; 12. a lower housing; 121. clamping convex; 13. a heat dissipating element; 14. an installation space;

2. a heating element;

3. a printed circuit board;

4. an elastic fixing member; 41. a positioning part; 411. a protrusion; 42. a connecting portion; 43. an elastic portion; 431. an installation part; 432. an antenna; 433. a guide portion; 44. abutting the cavity.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

As shown in fig. 1 to 4, the present embodiment provides a controller, which is applied to an electric vehicle as an example, and includes a housing 1, a printed circuit board 3 disposed in the housing 1, and a heating element 2 soldered to the printed circuit board 3. Wherein, shell 1 includes upper casing 11 and rather than the joint with form installation space 14's lower casing 12, and printed circuit board 3 is located in installation space 14, is favorable to printed circuit board 3's heat dissipation, has further improved printed circuit board 3's operational environment, has improved printed circuit board 3's life. The upper shell 11 and the lower shell 12 are connected in a clamping mode, so that the installation time is shortened, the installation efficiency is improved, and the disassembly is convenient.

Specifically, the upper housing 11 is provided with a plurality of circumferentially distributed fastening holes 111, and the lower housing 12 is provided with fastening protrusions 121 corresponding to the fastening holes 111 one to one. When the upper housing 11 and the lower housing 12 are connected, each of the locking protrusions 121 is inserted into the corresponding locking hole 111. In other embodiments, the locking hole 111 may be disposed on the lower case 12, and the locking protrusion 121 may be disposed on the upper case 11.

Further, the controller further comprises a heat dissipation element 13 and an elastic fixing member 4, and the heat dissipation element 13 and the elastic fixing member 4 are both arranged in the installation space 14. Wherein, the heat dissipation element 13 is used for dissipating heat of the heating element 2, and is made of a material with heat dissipation performance, and the heat dissipation element 13 is arranged in the shell 1 and fixed relative to the shell 1; the elastic fixing member 4 is elastically deformable to sandwich the heat generating element 2 and the heat radiating element 13 in the elastic fixing member 4, and to bring the heat generating element 2 and the heat radiating element 13 into abutment with each other. The heat dissipation element 13 is disposed on the lower housing 12, and may be integrally formed with the lower housing 12, or the heat dissipation element 13 and the lower housing 12 may be connected by welding, clamping, or the like. In other embodiments, the heat dissipation element 13 may be disposed on the upper housing 11.

The heating element 2 and the heat dissipation element 13 are clamped in the elastic fixing piece 4 by utilizing the elastic deformation of the elastic fixing piece 4, so that the heating element 2 and the heat dissipation element 13 are mutually abutted, and the heat generated by the working of the heating element 2 is transferred to the shell 1 through the heat dissipation element 13 and then is dissipated to the outer side of the shell 1, thereby improving the heat dissipation stability and prolonging the service life of the heating element 2; the fixing mode of the heating element 2 is simple, and the stability is good, so that the problem that the connection between the heating element 2 and the radiating element 13 is easy to loose due to vibration is effectively avoided.

In this embodiment, the heating element 2 and the heat dissipation element 13 are parallel to each other and have zero interval, so as to increase the contact area between the heating element 2 and the heat dissipation element 13 and improve the heat dissipation effect of the heating element 2.

Specifically, the heat generating element 2 has a first surface and a second surface which are arranged opposite to each other, and the heat dissipating element 13 has a plate-like structure having a third surface and a fourth surface which are arranged opposite to each other, and the second surface and the third surface are abutted against each other.

Further, the elastic fixing member 4 includes a positioning portion 41, a connecting portion 42 and an elastic portion 43 connected in sequence, the positioning portion 41 and the elastic portion 43 are disposed on the same side of the connecting portion 42 and are disposed opposite to each other to form an abutting cavity 44 with one open end; one end of the heat generating element 2 and one end of the heat radiating element 13 are inserted into the abutting cavity 44 and interposed between the positioning portion 41 and the elastic portion 43. Specifically, the positioning portion 41 and the fourth surface of the heat radiating element 13 abut against each other, and the elastic portion 43 and the first surface of the heat generating element 2 abut against each other.

In this embodiment, the heating element 2 is disposed at the edge of the printed circuit board 3, so that one end of the heating element 2 can be inserted into the abutting cavity 44.

Further, a slot is disposed on a side of the heat dissipating element 13 opposite to the heat generating element 2, and a protrusion 411 capable of being inserted into the slot is disposed on the positioning portion 41. Specifically, the protrusion 411 is formed by protruding an inner wall of the positioning portion 41 at an end not connected to the connecting portion 42 toward the side where the elastic portion 43 is located. In this embodiment, the protrusion 411 has a plate-shaped structure, one protrusion 411 may be provided, or two or more protrusions may be provided, and the card slot and the protrusion 411 may be one-to-many or one-to-one, and this embodiment takes one protrusion 411 and one card slot as an example. Because the heat dissipation element 13 is fixed relative to the housing 1, the elastic fixing member 4 is positioned in a manner of matching the clamping groove and the protrusion 411. In other embodiments, the slot may be disposed on the positioning portion 41, and the protrusion 411 may be disposed on the heat dissipation element 13.

In another embodiment, the positioning portion 41 and the first surface of the heat generating element 2 may be in contact with each other, and the elastic portion 43 and the fourth surface of the heat dissipating element 13 may be in contact with each other. This case is only for the heating element 2 with its own protrusion 411 or card slot.

Further, the heat dissipating element 13 abuts against the inner wall of the connecting portion 42 surrounding the abutting cavity 44. When the heat radiating element 13 abuts against the inner wall of the abutting cavity 44 surrounded by the connecting portion 42 when the heat generating element 2 is fixed by the elastic fixing member 4, the elastic fixing member 4 will already abut against the heat generating element 2 against the heat radiating element 13 at this time. By adopting the arrangement, the installation mode of the elastic fixing piece 4 is simplified, and the installation efficiency is improved. Specifically, when the printed circuit board 3 is placed horizontally, the top surface of the heat radiating element 13 is higher than the top surface of the heat generating element 2.

Further, in order to ensure the elastic deformation capability of the elastic portion 43 and ensure the stability of the heat generating element 2 and the heat dissipating element 13 clamped in the elastic fixing member 4, in the present embodiment, the end of the elastic portion 43 not connected to the connecting portion 42 is inclined toward the positioning portion 41. The angle formed by the elastic portion 43 and the connecting portion 42 is preferably, but not limited to 68 °, and may be determined according to various factors such as the thickness of the heat dissipation element 13 and the heat generating element 2 that are actually used.

Further, an end of the elastic portion 43 not connected to the connection portion 42 is provided with a guide portion 433 for guiding the heating element 2 when the heating element 2 is inserted into the abutment cavity 44.

Further, the heating element 2 includes a plurality of MOS transistors arranged in sequence; the elastic portion 43 includes at least one antenna 432, and each antenna 432 abuts against at least one MOS transistor.

In this embodiment, the antennas 432 are disposed in one-to-one correspondence with the MOS transistors, and each antenna 432 abuts against the corresponding MOS transistor. Preferably, the antenna 432 is formed in a sheet shape to increase the contact between the antenna 432 and the heat generating element 2, thereby improving stability.

Specifically, the elastic fixing member 4 is provided with one, as shown in fig. 4, the elastic portion 43 includes a mounting portion 431, an antenna 432 and a guide portion 433 which are connected in sequence, the mounting portion 431 is provided with one, each antenna 432 is connected to the mounting portion 431, and the guide portion 433 is in one-to-one correspondence with the antenna 432. In other embodiments, one antenna 432 may abut two, three or more MOS transistors, so as to reduce the number of the antennas 432. In other embodiments, two, three or more elastic fixing members 4 may be further provided, for example, the elastic fixing members 4 are disposed in one-to-one correspondence with the MOS transistors, where the elastic portion 43 of each elastic fixing member 4 includes an antenna 432; alternatively, when the number of the elastic fixing members 4 is less than the number of the MOS transistors, the elastic portion 43 of at least one elastic fixing member 4 includes at least two tentacles 432. When setting up two at least elastic fixation spare 4, mutual independence between each elastic fixation spare 4, elastic fixation spare 4's simple structure, convenient shaping.

In this embodiment, the guiding portion 433 includes a first guiding portion connected to the end of the antenna 432 not connected to the mounting portion 431 and a second guiding portion connected to the end of the first guiding portion not connected to the antenna 432. The first guide portion is inclined to the side where the positioning portion 41 is located, and the second guide portion is inclined to the side facing away from the positioning portion 41. When the heating element 2 and the heat radiating element 13 are connected by the elastic fixing member 4, the heating element 2 is guided by the first guide portion and the second guide portion so that the heating element 2 is inserted into the abutment cavity 44.

It is obvious that the above embodiments of the present invention are only 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. A controller, includes shell (1), locates printed circuit board (3) in shell (1), and weld in heating element (2) of printed circuit board (3), its characterized in that still includes:

a heat dissipation element (13) which is provided in the housing (1), is fixed to the housing (1), and dissipates heat from the heating element (2);

the elastic fixing piece (4) can elastically deform, so that the heating element (2) and the heat dissipation element (13) are clamped in the elastic fixing piece (4), and the heating element (2) and the heat dissipation element (13) are mutually abutted.

2. A control according to claim 1, characterised in that the heating element (2) and the heat-radiating element (13) are parallel to each other and are at zero spacing.

3. The controller according to claim 2, characterized in that the elastic fixing member (4) comprises a positioning portion (41), a connecting portion (42) and an elastic portion (43) which are connected in sequence, wherein the positioning portion (41) and the elastic portion (43) are arranged on the same side of the connecting portion (42) and are arranged oppositely to form an abutting cavity (44) with one open end;

one end of the heating element (2) and one end of the heat dissipation element (13) are inserted into the abutting cavity (44) and are clamped between the positioning part (41) and the elastic part (43).

4. A controller according to claim 3, wherein one of the heat-radiating member (13) and the positioning portion (41) is provided with a slot, and the other is provided with a projection (411) which can be inserted into the slot.

5. A controller according to claim 3, wherein an end of the elastic portion (43) not connected to the connecting portion (42) is inclined to a side of the positioning portion (41).

6. A control according to claim 3, characterized in that the heat-radiating element (13) abuts against an inner wall of the connection portion (42) enclosing the abutment cavity (44).

7. A control according to claim 3, characterised in that the end of the resilient part (43) not connected to the connection part (42) is provided with a guide part (433) for guiding the heating element (2) when the heating element (2) is inserted into the abutment cavity (44).

8. A controller according to claim 3, wherein the heating element (2) comprises a plurality of MOS transistors arranged in sequence;

the elastic part (43) comprises at least one antenna (432), and each antenna (432) is mutually abutted with at least one MOS tube.

9. A control according to any of claims 3 to 8, characterised in that the resilient fixing (4) is provided in at least two.

10. A control according to claim 1, characterized in that the housing (1) comprises an upper shell (11) and a lower shell (12) which snaps into place to form a mounting space (14).