Mounting structure of control panel in power type controller
By adopting buffered soft rubber strips and tablet structures in the power controller, combined with insulated heat transfer parts and insulated brackets, the problem of power devices being unable to reliably tighten is solved, and reliable heat dissipation and safe operation are achieved.
Patent Information
- Application Number
- CN202420432230.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-06
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-03-06
AI Technical Summary
In existing power controllers, the power devices cannot be reliably pressed against the bottom shell, which affects the heat dissipation effect and has a risk of short circuit.
The buffering soft rubber strip and tablet structure is adopted to lock the power device directly on the bottom shell, and ensure heat dissipation and safe operation through insulated heat transfer parts and insulated brackets, combining positioning protrusions and limiting grooves to achieve precise positioning and sealing.
It realizes reliable heat dissipation of power devices, avoids the risk of short circuits, and ensures safe operation and sealing of the control board.
Smart Images
Figure CN223157440U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a power controller, in particular to an installation structure of a control board in a power controller. Background Art
[0002] As is well known, a row of power devices is usually arranged on the control board in various power controllers such as electric vehicle controllers. During the installation process of the bottom case and the upper case, the power devices are usually pressed against the upper case or the bottom case. In actual use, due to reasons such as assembly accuracy, it is impossible to ensure that all the power devices in the controller are reliably pressed against the upper case or the bottom case, which affects the heat dissipation of the power devices. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide an installation structure of a control board in a power controller that can reliably press the power devices against the bottom case.
[0004] To solve the above technical problem, the technical solution adopted by the utility model is: an installation structure of a control board in a power controller, including: a bottom case and a control board arranged on the bottom case, the control board including: a printed circuit board and a row of power devices arranged on the printed circuit board, the metal bottom surface of the power device faces the bottom case and extends beyond the printed circuit board; a heat dissipation surface is arranged on the bottom case, an insulating heat transfer member is arranged between the metal bottom surface of the row of power devices and the heat dissipation surface of the bottom case, a buffer soft rubber strip and a pressing piece are sequentially arranged on the row of power devices, at least two pressing through holes are opened along the length direction on the pressing piece, and pressing installation holes corresponding to the pressing through holes one by one are opened on the bottom case, and a screw is selected to pass through the pressing through hole on the pressing piece and be screwed into the corresponding pressing installation hole on the bottom case; an insulating bracket is arranged between the printed circuit board and the bottom case.
[0005] As a preferred solution, in the installation structure of the control board in the power controller, positioning convex portions are respectively arranged on one side of the two ends of the pressing piece in its length direction facing the corresponding sides of the bottom case. Correspondingly, positioning pits corresponding to the positioning convex portions one by one are opened on the bottom case, and the positioning convex portions on the pressing piece are arranged in the corresponding positioning pits on the bottom case.
[0006] As a preferred solution, in the installation structure of the control board in the power controller, a bending portion is arranged in the middle of the pressing piece in its width direction.
[0007] As a preferred solution, in the installation structure of the control board in the power controller, the insulating heat transfer member is an insulating pad or an aluminum substrate.
[0008] As a preferred solution, in the mounting structure of the control board in the power type controller, the printed circuit board is respectively provided with limiting grooves on a pair of corresponding edges thereof, and the bottom case is provided with limiting convex portions corresponding to the limiting grooves one by one.
[0009] As a preferred solution, in the mounting structure of the control board in the power type controller, the bottom case is provided with limiting bosses corresponding to the four corners of the insulating bracket, and the insulating bracket is constrained within the area surrounded by the four limiting bosses.
[0010] As a preferred solution, in the mounting structure of the control board in the power type controller, the limiting boss is an L-shaped limiting boss.
[0011] As a preferred solution, in the mounting structure of the control board in the power type controller, the power device is a power MOS transistor.
[0012] As a preferred solution, in the mounting structure of the control board in the power type controller, a plurality of fixed mounting holes are circumferentially arranged on the bottom case, and correspondingly, the pressing piece is provided with avoidance notches for avoiding the corresponding fixed mounting holes.
[0013] As a preferred solution, in the mounting structure of the control board in the power type controller, an annular sealing groove is arranged on the bottom case inside the fixed mounting holes in the circumferential direction, and a sealing ring or a gel-like sealing body is arranged in the annular sealing groove.
[0014] The beneficial effects of the present utility model are as follows:
[0015] 1. By sequentially arranging a buffer soft rubber strip and a pressing piece on the power device, the power device is directly locked on the bottom case, ensuring reliable heat dissipation of the power device through the bottom case.
[0016] 2. By arranging an insulating bracket between the printed circuit board and the bottom case, it is ensured that the components on the control board will not cause a short circuit due to their pins touching the bottom case, providing reliable guarantee for the safe operation of the control board.
[0017] 3. By respectively arranging positioning convex portions on the outer sides of both ends of the pressing piece and providing positioning pits corresponding to the positioning convex portions one by one on the bottom case, the installation of the pressing piece is more convenient and the positioning is more accurate and reliable.
[0018] 4. By respectively arranging limiting grooves on a pair of corresponding edges of the printed circuit board and arranging limiting convex portions corresponding to the limiting grooves one by one on the bottom case, the control board is accurately positioned on the bottom case without sliding.
[0019] 5. The utility model binds the insulating bracket within the area enclosed by four limiting bosses provided on the bottom case corresponding to the four corners of the insulating bracket, so that the position of the insulating bracket corresponds to that of the control board.
[0020] 6. The utility model provides a reliable seal between the bottom case and the upper case by providing an annular sealing groove on the bottom case and arranging a sealing ring or a gel-like sealing body in the annular sealing groove, which can effectively prevent water vapor from entering the controller and ensure the reliable operation safety of the control board. Description of the Drawings
[0021] Figure 1 is a three-dimensional structural schematic diagram of the power type controller of the utility model.
[0022] Figure 2 is an exploded structural schematic diagram of the power type controller of the utility model.
[0023] Figure 3 is a partial three-dimensional structural schematic diagram of the power type controller of the utility model.
[0024] Figure 4 is a partial exploded structural schematic diagram of the power type controller of the utility model.
[0025] Figure 5 is a three-dimensional structural schematic diagram of the power type controller of the utility model with a protective cover.
[0026] Figures 1 to 5 The reference numerals in are: 1. Protective cover; 2. Upper case; 3. Metal pressing sheet, 31. Positioning convex part, 32. Pressing through hole, 33. Avoidance notch; 4. Control board, 40 Printed circuit board, 44. Limiting groove, 48. Power MOS tube; 5. Buffer soft rubber strip; 6. Insulating bracket; 7. Aluminum substrate; 8. Sealing ring; 9. Bottom case, 91. Heat dissipation surface, 92. L-shaped limiting boss, 93. Fixed installation hole, 94. Limiting convex part, 96. Annular sealing groove, 97. Positioning pit, 98. Heat dissipation fin, 99. Installation edge. Detailed Embodiment
[0027] The following combines with the drawings to describe in detail the specific implementation scheme of the installation structure of the control board in the power type controller of the utility model.
[0028] As Figure 1 and Figure 2As shown, an installation structure of a control board in a power type controller of the present utility model includes: a bottom case 9 and a control board 4 disposed on the bottom case 9. The specific structure of the control board 4 includes: a printed circuit board 40 and a row of twelve power MOS transistors 48 disposed on the printed circuit board 40. The metal bottom surface of the power MOS transistor 48 faces the bottom case 9 and extends beyond the corresponding side edge of the printed circuit board 40. A heat dissipation surface 91 is provided on the bottom case 9. An aluminum substrate 7 serving as an insulating heat transfer member is disposed between the metal bottom surfaces of this row of power MOS transistors 48 and the heat dissipation surface 91 of the bottom case 9. A buffer soft rubber strip 5 and a metal pressing sheet 3 are sequentially disposed on this row of power MOS transistors 48. The metal pressing sheet 3 is provided with three equally spaced and outwardly opening pressing through holes 32 along the length direction (see Figure 4 shown). Pressing installation holes corresponding to the pressing through holes 32 one by one are provided on the bottom case 9 (which belongs to the conventional technology in the art and will not be described in detail here). Screws are selected to pass through the pressing through holes 32 on the metal pressing sheet 3 and be screwed into the corresponding pressing installation holes on the bottom case 9. Positioning convex portions 31 are respectively disposed on one side of the two ends of the metal pressing sheet 3 in its length direction facing the corresponding sides (adjacent sides) of the bottom case 9. Correspondingly, positioning pits 97 corresponding to the positioning convex portions 31 one by one are provided on the bottom case 9 (see Figure 3 and Figure 4 shown). The positioning convex portions 31 on the metal pressing sheet 3 are disposed in the corresponding positioning pits 97 on the bottom case 9. An insulating bracket 6 is disposed between the printed circuit board 40 and the bottom case 9. The specific installation method of the insulating bracket 6 is: L-shaped limiting bosses 92 corresponding to the four corners of the insulating bracket 6 are provided on the bottom case 9. The insulating bracket 6 is constrained within the area surrounded by these four L-shaped limiting bosses 92. In this embodiment, a plurality of fixed installation holes 93 are circumferentially provided on the bottom case 9. Correspondingly, avoidance notches 33 for avoiding the corresponding fixed installation holes 93 are provided on the metal pressing sheet 3. Limiting grooves 44 are respectively provided on a pair of corresponding edges of the printed circuit board 40 (a pair of edges adjacent to the edge where a row of power MOS transistors 48 are installed). Limiting convex portions 94 corresponding to the limiting grooves 44 one by one are provided on the bottom case 9. During installation, the limiting grooves 44 on the printed circuit board 40 are clamped on the corresponding limiting convex portions 94 on the bottom case 9.
[0029] In actual application, the insulating heat transfer member may also be an insulating pad; the metal pressing sheet 3 is provided with a bending portion in the middle of its width direction; an annular sealing groove 96 is formed on the bottom shell 9 along the circumferential direction inside the fixed mounting hole 93, and a sealing ring 8 is arranged in the annular sealing groove 96, or sealant may be injected into the annular sealing groove 96 to form a gel-like sealing body; a plurality of connectors and connection seats are further arranged on the printed circuit board 40, and installation windows corresponding to the connectors and connection seats are formed on the upper shell 2. After the connectors and connection seats are sleeved with sealing rings, they are installed together with the upper shell 2 (which belongs to the conventional technology in the art and will not be described in detail here); installation edges 99 are respectively arranged on both sides of the bottom shell 9 in its length direction, and fixed mounting holes are formed in the installation edges 99 (usually one round hole and multiple long round holes, which belongs to the conventional technology in the art and will not be described in detail here); heat dissipation fins 98 are further arranged on the bottom shell 9.
[0030] During actual use, unless the protective cover 1 needs to be removed during wiring, under normal circumstances, the protective cover 1 should be covered (see Figure 5 as shown).
[0031] In summary, the above are only the preferred embodiments of the present invention, and are not used to limit the scope of implementation of the present invention. Any equal changes and modifications made to the shape, structure, features and spirit described in the claims of the present invention shall be included within the scope of the claims of the present invention.
Claims
1. An installation structure of a control board in a power type controller, comprising: The bottom case and a control board disposed on the bottom case, characterized in that the control board includes: a printed circuit board and a row of power devices disposed on the printed circuit board, the metal bottom surface of the power device facing the bottom case and extending beyond the printed circuit board; a heat dissipation surface is provided on the bottom case, an insulating heat transfer member is provided between the metal bottom surface of the row of power devices and the heat dissipation surface of the bottom case, a buffer soft rubber strip and a pressing piece are sequentially provided on the row of power devices, at least two pressing through holes are formed in the pressing piece along the length direction, and pressing mounting holes corresponding to the pressing through holes one by one are formed on the bottom case, and a screw is selected to pass through the pressing through hole on the pressing piece and be screwed into the corresponding pressing mounting hole on the bottom case; an insulating bracket is provided between the printed circuit board and the bottom case.
2. The mounting structure of the control board in a power type controller according to claim 1, characterized in that, Positioning convex portions are respectively provided on one side of the two ends of the pressing piece in its length direction facing the corresponding sides of the bottom case. Correspondingly, positioning pits corresponding to the positioning convex portions one by one are formed on the bottom case, and the positioning convex portions on the pressing piece are arranged in the corresponding positioning pits on the bottom case.
3. The mounting structure of the control board in a power type controller according to claim 2, characterized in that, A bending portion is provided in the middle of the pressing piece in its width direction.
4. The mounting structure of the control board in a power type controller according to claim 1, characterized in that, The insulating heat transfer member is an insulating pad or an aluminum substrate.
5. The mounting structure of the control board in a power type controller according to claim 1, characterized in that, Limiting grooves are respectively formed on a pair of corresponding edges of the printed circuit board, and limiting convex portions corresponding to the limiting grooves one by one are provided on the bottom case.
6. The mounting structure of the control board in a power type controller according to claim 1, characterized in that, Limiting bosses corresponding to the four corners of the insulating bracket are provided on the bottom case, and the insulating bracket is constrained within the area surrounded by the four limiting bosses.
7. The mounting structure of the control board in a power type controller according to claim 6, characterized in that The limiting boss is an L-shaped limiting boss.
8. The mounting structure of the control board in a power type controller according to any one of claims 1 to 7, characterized in that A plurality of fixed mounting holes are circumferentially provided on the bottom case. Correspondingly, avoiding notches for avoiding the corresponding fixed mounting holes are formed on the pressing piece.
9. The mounting structure of the control board in a power type controller according to claim 8, characterized in that, An annular sealing groove is formed on the bottom case along the circumference inside the fixed mounting hole, and a sealing ring or a colloidal sealing body is provided in the annular sealing groove.