Electronic control unit for vehicle-mounted compressor, vehicle-mounted compressor and vehicle

Abstract

The utility model relates to an electronic control unit for a vehicle-mounted compressor, the vehicle-mounted compressor and a vehicle. The vehicle-mounted compressor comprises a first cavity used for containing an electronic control unit and a second cavity used for containing a motor, the electronic control unit comprises a shell, the shell comprises a partition plate used for isolating the first cavity from the second cavity, and a heat conduction positioning groove is formed in the side, facing the first cavity, of the partition plate; cooling fins are arranged on the sides, facing the second cavity, of the partition plates, and the heat conduction positioning grooves extend into the cooling fins; a printed circuit board located within the housing; the packaging transistor comprises a packaging body and a pin, the packaging body is provided with a first end and a second end, the first end of the packaging body is inserted into the heat conduction positioning groove of the partition plate, and the pin extends outwards from the second end of the packaging body in the direction of the plane where the packaging body is located and is fixedly connected with the printed circuit board. The electronic control unit has the advantages of being compact in structure, good in heat dissipation and the like.

Description

Technical Field

[0001] This application belongs to the field of automotive parts. Specifically, it relates to an electronic control unit for an in-vehicle compressor, an in-vehicle compressor provided with the electronic control unit, and a vehicle configured with the in-vehicle compressor. Background Art

[0002] The information provided in this section is for the purpose of generally presenting the background of the present disclosure. To the extent described in this section, the work of the currently named inventors and aspects that may not constitute prior art descriptions at the time of filing are neither expressly nor implicitly considered prior art to the present disclosure.

[0003] In existing vehicle electric air-conditioning compressors, the electronic control unit mostly uses encapsulated transistors to control the on / off of the motor. If the encapsulated transistors cannot dissipate heat in time, the normal operation of the electronic control unit cannot be guaranteed. Therefore, higher requirements are imposed on the heat dissipation method, positioning method, installation position, etc. of the encapsulated transistors.

[0004] Application Content

[0005] According to the present application, there is provided an electronic control unit for an in-vehicle compressor. The in-vehicle compressor includes a first cavity for accommodating the electronic control unit and a second cavity for accommodating the motor, and the first cavity and the second cavity are hermetically isolated from each other. The electronic control unit includes:

[0006] A housing, which includes a partition for isolating the first cavity and the second cavity. The partition is provided with a heat-conducting positioning groove on the side facing the first cavity, and the partition is provided with cooling fins on the side facing the second cavity, wherein the heat-conducting positioning groove extends into the interior of the cooling fins;

[0007] A printed circuit board, which is located inside the housing; and

[0008] An encapsulated transistor, which includes an encapsulation body and pins. The encapsulation body has a first end and a second end facing each other. Wherein, the first end of the encapsulation body is inserted into the heat-conducting positioning groove of the partition, and the pins extend outward from the second end of the encapsulation body along the direction of the plane where the encapsulation body is located and are fixedly connected to the printed circuit board.

[0009] Optionally, in the electronic control unit as described above, a heat-conducting insulating glue or a heat-conducting insulating gasket is provided in the heat-conducting positioning groove.

[0010] Optionally, in the electronic control unit as described above, the plane where the encapsulation body is located is perpendicular to the plane where the printed circuit board is located.

[0011] Optionally, in the electronic control unit as described above, the depth of the heat-conducting positioning groove is the same as the height of the encapsulation body.

[0012] Optionally, in the electronic control unit as described above, the encapsulated transistor is an insulated gate bipolar transistor, and the insulated gate bipolar transistor includes a first pin, a second pin, and a third pin extending outward from the same side of the encapsulation body.

[0013] Optionally, in the electronic control unit as described above, the motor includes a motor shaft, and the number of the encapsulated transistors is six. The six encapsulated transistors are of the same size and are arranged around the motor shaft.

[0014] Optionally, in the electronic control unit as described above, the cooling fins are integrally formed with the partition; and / or

[0015] The cooling fins have a rectangular cross-sectional shape.

[0016] Optionally, in the electronic control unit as described above, the housing is made of cast aluminum; and / or

[0017] The pins are fixedly connected to the printed circuit board by welding.

[0018] In addition, according to the present application, a vehicle-mounted compressor is further provided, and the vehicle-mounted compressor is provided with the above-mentioned electronic control unit.

[0019] Furthermore, according to the present application, a vehicle is further provided, and the vehicle is configured with the above-mentioned vehicle-mounted compressor. Description of the Drawings

[0020] Referring to the accompanying drawings, the disclosure of the present application will become more understandable. It is easily understood by those skilled in the art that these drawings are only for illustrative purposes and are not intended to limit the protection scope of the present application. In addition, similar numbers in the drawings are used to represent similar components, where:

[0021] Figure 1 Exemplarily shows a partial structural schematic diagram of an electronic control unit for a vehicle-mounted compressor disclosed according to the present application;

[0022] Figure 2 Exemplarily shows a structural schematic diagram of a second cavity of a vehicle-mounted compressor disclosed according to the present application. Detailed Embodiments

[0023] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will provide a detailed description of the specific embodiments of the present application with reference to the accompanying drawings. First of all, it should be noted that the orientation terms such as up, down, left, right, front, back, inner, outer, top, bottom, etc. mentioned or possibly mentioned in this specification are defined relative to the structures shown in the respective drawings. They are relative concepts and may therefore change accordingly depending on their different positions and usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0024] In the present application, unless otherwise clearly specified and limited, terms such as "fixed" should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0025] Figure 1 The structural diagram of an electronic control unit for a vehicle-mounted compressor disclosed according to the present application is shown. The vehicle-mounted compressor includes a first cavity 20 for accommodating the electronic control unit 10 and a second cavity 30 for accommodating a motor (not shown), and the first cavity 20 and the second cavity 30 are hermetically isolated from each other. The second cavity 30 is filled with a refrigerant, and the refrigerant circulates in the second cavity 30. From Figure 1 and Figure 2 it can be clearly seen that the electronic control unit 10 is composed of components such as a housing 100, a printed circuit board 200, and packaged transistors 300. The housing 100 is made of, for example, cast aluminum and includes a partition 110 for isolating the first cavity 20 and the second cavity 30. The partition 110 is provided with a heat-conducting positioning groove 120 on the side facing the first cavity 20, and the partition 110 is provided with cooling fins 130 on the side facing the second cavity 30, wherein the heat-conducting positioning groove 120 extends into the interior of the cooling fins 130. The printed circuit board 200 is located inside the housing 100. The packaged transistor 300 includes a packaged body 310 and pins 320. The packaged body 310 has a first end and a second end opposite to each other. Among them, the first end of the packaged body 310 is inserted into the heat-conducting positioning groove 120 of the partition 110, and the pins 320 extend outward from the second end of the packaged body 310 along the direction of the plane where the packaged body 310 is located and are fixedly connected to the printed circuit board 200 by, for example, welding or other means.

[0026] In other alternative embodiments in combination with the above embodiments, a thermally conductive insulating adhesive or a thermally conductive insulating gasket (not shown) is provided in the thermally conductive positioning groove 120. When the first end of the encapsulation body 310 is inserted into the thermally conductive positioning groove 120 of the partition plate 110, the encapsulated transistor 300 can be fixed to the thermally conductive positioning groove 120 by means of the thermally conductive insulating adhesive or the thermally conductive insulating gasket, so that the heat of the encapsulated transistor 300 can be conducted out in time through the housing 100.

[0027] In the above embodiment, the plane where the encapsulation body 310 is located is perpendicular to the plane where the printed circuit board 200 is located, so that the encapsulated transistor 300 occupies as little space as possible, and further makes the internal structure of the electronic control unit 10 more compact.

[0028] It is easy for those skilled in the art to think that the depth of the thermally conductive positioning groove 120 can be designed to be the same as the height of the encapsulation body 310, so that the encapsulation body 310 can be completely buried in the thermally conductive positioning groove 120, and as much heat as possible of the encapsulation body 310 can be discharged through the housing 100.

[0029] It should be noted that the encapsulated transistor 300 is an insulated gate bipolar transistor, and the insulated gate bipolar transistor includes a first lead, a second lead, and a third lead extending outward from the same side of the encapsulation body 310. Further, the motor includes a motor shaft (not shown), the number of the encapsulated transistors 300 is six, and the six encapsulated transistors 300 are of the same size and are arranged around the motor shaft.

[0030] For the purpose of facilitating manufacturing, the cooling fins 130 and the partition plate 110 are integrally formed. As Figure 2 shown, the cooling fins 130 have a rectangular cross-sectional shape.

[0031] In addition, the present application also provides a vehicle-mounted compressor, and the vehicle-mounted compressor is provided with the above-mentioned electronic control unit 10. The technical improvements and beneficial effects of the vehicle-mounted compressor are the same as those of the electronic control unit, so the vehicle-mounted compressor will not be described in detail herein.

[0032] In addition, the present application also provides a vehicle. The vehicle is equipped with the above-mentioned vehicle-mounted compressor. The vehicle can be various vehicles such as a private car, a taxi, a bus, a minibus or a bus.

[0033] The above lists several specific embodiments to elaborate in detail the electronic control unit for a vehicle-mounted compressor, the vehicle-mounted compressor provided with the electronic control unit, and the vehicle configured with the vehicle-mounted compressor. These examples are only for explaining the principle and its implementation of the present application, rather than limiting the present application. Without departing from the spirit and scope of the present application, those of ordinary skill in the art can also make various deformations and improvements. Therefore, all equivalent technical solutions should fall within the scope of the present application and be defined by the various claims of the present application.

Claims

1. An electronic control unit for a vehicle-mounted compressor, the vehicle-mounted compressor comprising a first cavity (20) for accommodating the electronic control unit (10) and a second cavity (30) for accommodating a motor, wherein the first cavity (20) and the second cavity (30) are sealed and isolated from each other, characterized in that: The electronic control unit (10) comprises: A housing (100), comprising a partition (110) for isolating the first cavity (20) and the second cavity (30), wherein the partition (110) is provided with a heat conduction positioning groove (120) on a side facing the first cavity (20), and the partition (110) is provided with a cooling fin (130) on a side facing the second cavity (30), wherein the heat conduction positioning groove (120) extends to the interior of the cooling fin (130); a printed circuit board (200), which is located in the housing (100); and A packaged transistor (300) comprises a package body (310) and a pin (320), wherein the package body (310) has a first end and a second end opposite to each other, wherein the first end of the package body (310) is inserted into the heat conductive positioning groove (120) of the partition (110), and the pin (320) extends outward from the second end of the package body (310) along the direction of the plane where the package body (310) is located and is fixedly connected to the printed circuit board (200).

2. The electronic control unit according to claim 1, characterized in that: A thermally conductive insulating adhesive or a thermally conductive insulating gasket is arranged in the thermally conductive positioning groove (120).

3. The electronic control unit according to claim 2, characterized in that: The plane where the packaging body (310) is located is perpendicular to the plane where the printed circuit board (200) is located.

4. The electronic control unit according to any one of claims 1 to 3, characterized in that: The depth of the heat-conducting positioning groove (120) is the same as the height of the packaging body (310).

5. The electronic control unit according to any one of claims 1 to 3, characterized in that: The packaged transistor (300) is an insulated gate bipolar transistor, comprising a first pin, a second pin and a third pin extending outward from the same side of the package body (310).

6. The electronic control unit according to any one of claims 1 to 3, characterized in that: The motor comprises a motor shaft, and the number of the packaged transistors (300) is six, the six packaged transistors (300) are of the same size and are arranged around the motor shaft.

7. The electronic control unit according to any one of claims 1 to 3, characterized in that: The cooling fin (130) and the partition (110) are integrally formed; and / or The cooling fin (130) has a rectangular cross-sectional shape.

8. The electronic control unit according to any one of claims 1 to 3, characterized in that: The housing (100) is made of cast aluminum; and / or The pin (320) is fixedly connected to the printed circuit board (200) by welding.

9. A vehicle-mounted compressor, characterized in that: The on-board compressor is provided with an electronic control unit (10) according to any one of claims 1-8.

10. A vehicle, characterized in that: The vehicle is equipped with the on-vehicle compressor according to claim 9.

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