Electronic control device and electric air-conditioning compressor for vehicle
By using a design that combines a limiting part and a clamping part with an insulating heat dissipation component in the automotive electric air conditioning compressor, the heat dissipation problem of the packaged transistor is solved, ensuring the normal operation of the electronic control device and simplifying the installation process.
Patent Information
- Application Number
- CN202520329610.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-26
AI Technical Summary
In existing automotive electric air conditioning compressors, the heat dissipation problem of the packaged transistors has not been effectively solved, causing the electronic control unit to malfunction.
The device employs a limiting part inside the housing and a clamping member made of elastic metal. A clamping spring is used to apply elastic force to the second side of the packaged transistor, which is then fastened to the housing. An insulating heat sink is also used to achieve rapid heat dissipation.
It achieves efficient heat dissipation of packaged transistors, ensuring the normal operation of electronic control devices, and the installation process is simple and convenient.
Smart Images
Figure CN223899698U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electrical connection technology, and more specifically, to an electronic control device and an automotive electric air conditioning compressor equipped with the electronic control device. Background Technology
[0002] The information provided in this section is for the purpose of generally presenting the background of this disclosure. To the extent described in this section, the work of the currently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly considered to be prior art of this disclosure.
[0003] In automotive electric air conditioning compressors, the electronic control unit (ECU) typically uses packaged transistors to control the motor's switching. Currently, the installation of these packaged transistors is generally done manually. If the packaged transistors cannot dissipate heat effectively, the ECU cannot function properly. Therefore, high demands are placed on the heat dissipation methods and installation efficiency of the packaged transistors. Utility Model Content
[0004] According to this application, an electronic control device is provided, comprising:
[0005] The housing has a limiting part provided on its inner wall;
[0006] The retainer is positioned within the housing;
[0007] A packaged transistor includes a package body and leads extending outwardly from the package body, wherein the package body is positioned on a retaining bracket and has a first side and a second side opposing each other, the first side of the package body abutting against the housing; and
[0008] A clamping member made of elastic metal is located within the housing and includes a clamping body and a clamping spring extending outward from the clamping body. The clamping member has a fastened position in which the clamping body abuts against the limiting portion and is detachably fixed to the housing, and the clamping spring applies a spring force to a second side of the encapsulation body to press the encapsulation body against the housing.
[0009] Optionally, in the electronic control device as described above, the top of the limiting portion is provided with a slope structure, wherein the clamping member has an initial position in which the clamping body is located at the slope structure of the limiting portion and the clamping spring is separated from the encapsulation body.
[0010] Optionally, in the electronic control device as described above, the bottom wall of the housing is provided with a positioning post, the height of which is greater than or equal to the height of the limiting part. The end of the clamping body is provided with a waist-shaped hole for positioning the clamping spring. The waist-shaped hole has a first end and a second end opposite to the first end along the length direction of the waist-shaped hole. In the fastened position, the positioning post is located at the first end of the waist-shaped hole, and in the initial position, the positioning post is located at the second end of the waist-shaped hole.
[0011] Optionally, in the electronic control device as described above, an insulating heat sink is provided between the first side of the encapsulation body and the housing.
[0012] Optionally, in the electronic control device as described above, the number of packaged transistors is three, the three packaged transistors are the same size, the retaining bracket is provided with three grooves corresponding to the three packaged transistors, and the number of clamping springs is three, the three clamping springs respectively corresponding to the three packaged transistors.
[0013] Optionally, in the electronic control device as described above, a first positioning pin for positioning within the housing is provided on one side of the retaining bracket, and a second positioning pin for positioning the encapsulation body is provided in each of the three grooves of the retaining bracket.
[0014] Optionally, in the electronic control device as described above, the limiting portion is integrally formed with the housing; and / or
[0015] The housing is made of aluminum; and / or
[0016] The retainer is made of plastic; and / or
[0017] The clamping body has a U-shaped cross-section.
[0018] Alternatively, in the electronic control device as described above, in the fastened position, the clamping body is fixed to the housing by bolts.
[0019] Optionally, in the electronic control device as described above, the end of the clamping body is provided with a bolt hole for the bolt to pass through.
[0020] In addition, according to this application, an electric air conditioning compressor for vehicles is also provided, wherein the electric air conditioning compressor for vehicles is equipped with the above-mentioned electronic control device.
[0021] It is understood that the electronic control device of this application has a simple structure, flexible layout, and is highly conducive to automated installation. Furthermore, this electronic control device can quickly dissipate the heat from the packaged transistor through the casing, thereby achieving efficient cooling. Attached Figure Description
[0022] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the drawings are used to denote similar components, wherein:
[0023] Figure 1 A partial structural schematic diagram of the electronic control device disclosed in this application is shown as an example;
[0024] Figure 2 An exemplary schematic diagram of the packaged transistor and retaining bracket of the electronic control device disclosed in this application is shown when they are mounted together;
[0025] Figure 3 An exemplary cross-sectional schematic diagram of the packaged transistor and retaining bracket of the electronic control device disclosed in this application when they are mounted together;
[0026] Figure 4 An exemplary view is shown of a partial cross-sectional view of the electronic control device disclosed in this application when the clamping member is in the fastened position, taken along the height direction of the first locating pin;
[0027] Figure 5 An exemplary view is shown of a partial cross-sectional view of the electronic control device disclosed in this application when the clamping member is in the fastened position, taken along the height direction of the positioning post;
[0028] Figure 6 An exemplary view is shown of a partial cross-sectional view of the electronic control device disclosed in this application when the clamping member is in the initial position, taken along the height direction of the first locating pin;
[0029] Figure 7 An exemplary view is shown of a partial cross-sectional schematic diagram taken along the height direction of the positioning post when the clamping member is in the initial position of the electronic control device disclosed in this application;
[0030] Figure 8 An exemplary schematic diagram of the clamping member of the electronic control device disclosed in this application is shown; and
[0031] Figure 9 An exemplary schematic diagram of the structure of the retaining bracket of the electronic control device disclosed in this application is shown. Detailed Implementation
[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. First, it should be noted that the directional terms such as up, down, left, right, front, back, inner, outer, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive terms.
[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0034] Figure 1 The structure of the electronic control device according to this application is shown. From Figure 2 and Figure 3 As clearly seen, the electronic control device 10 comprises components such as a housing 100, a retaining bracket 200, a packaged transistor 300, and a clamping member 400. A limiting portion 110 is provided on the inner wall of the housing 100, and the retaining bracket 200 is positioned within the housing 100. The packaged transistor 300 includes a package body 310 and pins 320 extending outward from the package body 310. The package body 310 is positioned on the retaining bracket 200 and has a first side 311 and a second side 312 facing each other. The first side 311 of the package body 310 abuts against the housing 100. The clamping member 400 is made of elastic metal and is located within the housing 100. The clamping member 400 includes a clamping body 410 with a U-shaped cross-section and a clamping spring 420 extending outward from the clamping body 410. The clamping member 400 has a fastening position. Figure 4-5In the fastening position shown, the clamping body 410 abuts against the limiting part 110 and is detachably fixed to the housing 100, for example, by bolts (not shown) to the threaded hole 130 of the housing 100, and the clamping spring 420 applies a spring force to the second side 312 of the package body 310 to press the package body 310 against the housing 100. Thus, the electronic control device according to this application can rapidly conduct the heat of the packaged transistor to the housing, thereby efficiently solving the heat dissipation problem and ensuring the normal operation of the electronic control device. Furthermore, the pins 320 of the packaged transistor 300 can be substantially parallel to the package body 310, allowing the packaged transistor to be mounted vertically within the housing, thereby reducing the space occupied by the packaged transistor within the housing.
[0035] In other optional embodiments, in conjunction with the above embodiments, the top of the limiting portion 110 is provided with a sloped structure, wherein the clamping member 400 has an initial position. Figure 6-7 In the initial position shown, the clamping body 410 is located at the inclined structure of the limiting part 110 and the clamping spring 420 is separated from the encapsulation body 310.
[0036] Also refer to Figure 5 , Figure 7 and Figure 8 The bottom wall of the housing 100 is provided with a positioning post 120, the height of which is greater than or equal to the height of the limiting part 110. The end of the clamping body 410 is provided with a waist-shaped hole 411 for positioning the clamping spring 420. The waist-shaped hole 411 has a first end 411a and a second end 411b opposite to the first end 411a along the length direction of the waist-shaped hole 411. In the fastened position, the positioning post 120 is located at the first end 411a of the waist-shaped hole 411 (see reference). Figure 5 In the initial position, the positioning post 120 is located at the second end 411b of the oblong hole 411 (see reference). Figure 7 ).
[0037] To better dissipate heat from the packaged transistor 300, an insulating heat sink 500 is provided between the first side 311 of the package body 310 and the housing 100, thereby allowing the heat from the packaged transistor 300 to be rapidly conducted to the housing 100 through the insulating heat sink 500. Specifically, the insulating heat sink 500 can be made of a high-performance heat-dissipating material with insulating properties, such as TIM or thermal pads, and is fixed to the first side 311 of the package body 310 by means of adhesive bonding or other methods. Furthermore, the insulating heat sink 500 has no voltage and cannot conduct electricity with the heat-generating element, so that the insulating heat sink 500 can ensure the insulation between different heat-generating elements in the electronic control device 10 that require insulation.
[0038] In such Figure 2 and Figure 8 In the embodiment shown, there are three packaged transistors 300, all three being the same size. The retaining bracket 200 has three grooves 210 corresponding to the three packaged transistors 300, and there are three clamping springs 420, each corresponding to one of the three packaged transistors 300.
[0039] Continue to refer to Figure 9 The retaining bracket 200 has a first positioning pin 220 for positioning within the housing 100 on one side, and the retaining bracket 200 has a second positioning pin 230 for positioning the encapsulation body 310 in each of the three grooves 210.
[0040] For ease of manufacturing, the limiting portion 110 is integrally formed with the housing 100. For example, the housing 100 may be made of aluminum. As another example, the retaining bracket 200 may be made of plastic.
[0041] The following is a brief description of the installation process of the electronic control device 10 of this application. First, the packaged transistor 300 is positioned on the retaining bracket 200, and the insulating heat sink 500 is attached to the first side 311 of the package body 310 of the packaged transistor 300, thereby forming a packaged module. Then, the clamping member 400 is placed on the limiting part 110 of the housing 100, so that the clamping member 400 is in the initial position, at which time the positioning post 120 on the housing 100 is located at the second end 411b of the oblong hole 411. After that, the packaged module is positioned inside the housing 100, and then the clamping member 400 is pushed down into the fastened position, at which time the positioning post 120 on the housing 100 is located at the first end 411a of the oblong hole 411. Finally, the clamping member 400 is fixed to the threaded hole 130 of the housing 100 by bolts, thereby completing the assembly.
[0042] In addition, this application also provides an automotive electric air conditioning compressor, which is equipped with the aforementioned electronic control device 10. The technical improvements and beneficial effects of the automotive electric air conditioning compressor are the same as those of the electronic control device 10, therefore, a detailed description of the automotive electric air conditioning compressor is not provided here.
[0043] The above examples illustrate the electronic control device and automotive electric air conditioning compressor of this application. These examples are for illustrative purposes only and are not intended to limit the scope of this application. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and scope of this application. For example, the end of the clamping body 410 is provided with a bolt hole 412 for the bolt to pass through. Therefore, all equivalent technical solutions should fall within the scope of this application and are defined by the claims of this application.
Claims
1. An electronic control device, characterized in that, It includes: The housing (100) has a limiting part (110) on its inner wall; A retainer (200) is positioned within the housing (100); A packaged transistor (300) includes a package body (310) and leads (320) extending outwardly from the package body (310), wherein the package body (310) is positioned on the retaining bracket (200) and has a first side (311) and a second side (312) opposite to each other, the first side (311) of the package body (310) abutting against the housing (100); and A clamping member (400) made of elastic metal is located within the housing (100) and includes a clamping body (410) and a clamping spring (420) extending outward from the clamping body (410). The clamping member (400) has a fastened position in which the clamping body (410) abuts against the limiting portion (110) and is detachably fixed to the housing (100), and the clamping spring (420) applies a spring force to a second side (312) of the encapsulation body (310) to press the encapsulation body (310) against the housing (100).
2. The electronic control device according to claim 1, characterized in that, The top of the limiting part (110) is provided with a slope structure, wherein the clamping member (400) has an initial position in which the clamping body (410) is located at the slope structure of the limiting part (110) and the clamping spring (420) is separated from the encapsulation body (310).
3. The electronic control device according to claim 2, characterized in that, The bottom wall of the housing (100) is provided with a positioning post (120), the height of the positioning post (120) is greater than or equal to the height of the limiting part (110), wherein the end of the pressing body (410) is provided with a waist-shaped hole (411) for positioning the pressing spring (420), the waist-shaped hole (411) has a first end (411a) and a second end (411b) opposite to the first end (411a) along the length direction of the waist-shaped hole (411). In the fastened position, the positioning post (120) is located at the first end (411a) of the waist-shaped hole (411), and in the initial position, the positioning post (120) is located at the second end (411b) of the waist-shaped hole (411).
4. The electronic control device according to any one of claims 1-3, characterized in that, An insulating heat sink (500) is provided between the first side (311) of the encapsulation body (310) and the housing (100).
5. The electronic control device according to any one of claims 1-3, characterized in that, The number of packaged transistors (300) is three, the three packaged transistors (300) are the same size, the retaining bracket (200) is provided with three grooves (210) corresponding to the three packaged transistors (300), and the number of clamping springs (420) is three, the three clamping springs (420) respectively correspond to the three packaged transistors (300).
6. The electronic control device according to claim 5, characterized in that, The retaining bracket (200) has a first positioning pin (220) on one side for positioning within the housing (100), and the retaining bracket (200) has a second positioning pin (230) in each of the three grooves (210) for positioning the encapsulation body (310).
7. The electronic control device according to any one of claims 1-3, characterized in that, The limiting part (110) is integrally formed with the housing (100); and / or The housing (100) is made of aluminum; and / or The retaining bracket (200) is made of plastic; and / or The clamping body (410) has a U-shaped cross-section.
8. The electronic control device according to claim 3, characterized in that, In the fastened position, the clamping body (410) is fixed to the housing (100) by bolts.
9. The electronic control device according to claim 8, characterized in that, The end of the clamping body (410) is provided with a bolt hole (412) for the bolt to pass through.
10. A vehicle electric air conditioning compressor, characterized in that, The vehicle electric air conditioning compressor is equipped with an electronic control device (10) according to any one of claims 1-9.