Connector structure of controller-free electric compressor

Abstract

The invention discloses a connector structure of a controller-free electric compressor, which realizes that an automobile central mainboard directly controls the electric compressor and reduces the cost. Comprising a metal supporting framework, three mounting holes are formed in the metal supporting framework, cylindrical hard insulating glass is arranged in each mounting hole in a matched mode, intercommunication contact pins are arranged in inner holes of the hard insulating glass in a matched mode, and the hard insulating glass is in rigid connection with the intercommunication contact pins and the metal supporting framework; an external plug and a built-in plug are arranged at the two ends of each intercommunication contact pin, a plug-in plastic shell is installed on the upper surface of the metal supporting framework, plastic shell contact pin passages corresponding to the three intercommunication contact pins are arranged on the plug-in plastic shell, and an upper sealing rubber frame is arranged between the plug-in plastic shell and the metal supporting framework, between the hard insulating glass and between the plug-in plastic shell and the intercommunication contact pins; and a lower sealing rubber frame is sleeved on the built-in plugs of the three intercommunicated contact pins.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a connector structure of a controller-free electric compressor. Background Art

[0002] The controllerless electric compressor used in new energy vehicles is commonly known as a "brainless electric compressor". The common method in the market is to set up a special compressor controller to control the compressor. It is also necessary to set up a corresponding controller control board and a structure matching the control board, which is costly. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a connector structure for an electric compressor without a controller, so as to realize direct control of the electric compressor by a central mainboard of an automobile and reduce the cost.

[0004] The object of the present invention is achieved in that:

[0005] A connector structure for a controller-free electric compressor, comprising a metal support frame, three mounting holes arranged side by side on the metal support frame, each mounting hole is matched with a cylindrical hard insulating glass, the inner hole of the hard insulating glass is matched with an intercommunication pin, the hard insulating glass is rigidly connected with the intercommunication pin and the metal support frame, and the hard insulating glass insulates the intercommunication pin and the metal support frame;

[0006] An external plug and an internal plug are provided at both ends of the intercommunication pin, a plug-in plastic shell is installed on the upper surface of the metal support frame, and a plastic shell pin aisle is provided for the plug-in plastic shell corresponding to the three intercommunication pins, and the external plug of each intercommunication pin is located in the corresponding plastic shell pin aisle, and a gap is left between the external plug of the intercommunication pin and the inner wall of the plastic shell pin aisle, and an upper sealing rubber frame is provided between the plug-in plastic shell and the metal support frame, the hard insulating glass, and the intercommunication pin, and the upper sealing rubber frame seals the gap between adjacent components;

[0007] A lower sealing rubber frame is sleeved on the built-in plug of the three intercommunication pins. The lower sealing rubber frame is in contact with the metal support frame and the hard insulating glass. The lower sealing rubber frame is used for sealing the gap between adjacent components.

[0008] Preferably, an error-proofing structure is provided on the plastic housing of the plug-in.

[0009] Preferably, after the intercommunication pins and the metal support frame are fixed in position, the hard insulating glass is molded and connected to the intercommunication pins and the metal support frame. The hard insulating glass is rigidly connected to the intercommunication pins and the metal support frame respectively, and a groove structure can be provided on the intercommunication pins so that the hard insulating glass can limit the axial position of the intercommunication pins. Similarly, a groove structure can also be provided in the mounting hole of the metal support frame.

[0010] Preferably, the plug-in plastic shell is made by an integrated molding process. The plug-in plastic shell is integrally thermoformed on the metal support frame, and during molding, the glass will wrap around the pins and the steel plate, and the connection is hard and will not fall off.

[0011] Preferably, the middle portion of the hard insulating glass is cylindrical, the middle portion of the hard insulating glass cooperates with the mounting hole on the metal support frame, both ends of the hard insulating glass extend out of the mounting holes on the metal support frame, both ends of the hard insulating glass are conical, the upper sealing rubber frame and the lower sealing rubber frame are in contact with the conical surface of the hard insulating glass, and form an axial fixing force.

[0012] Preferably, the metal support frame is provided with screw holes, each screw hole is respectively equipped with a plug-in locking screw, and the plug-in locking screw is connected to and fixed on the surface of the motor housing of the controllerless electric compressor, so that a rigid connection is formed between the metal support frame and the motor housing of the controllerless electric compressor.

[0013] Preferably, a plurality of bosses are provided on the edge of the upper surface of the metal support frame, each boss is provided with the screw hole in the vertical direction, and the edge portion of the plug-in plastic shell is sleeved on the plurality of bosses for positioning.

[0014] Preferably, the width of the external plug of the intercommunication pin is greater than the diameter of the middle part of the intercommunication pin, and the upper sealing rubber frame forms an axial limit for the external plug.

[0015] Preferably, the external plug of the interconnecting pins is directly connected to the external wiring harness plug to receive three-phase input voltage, the external wiring harness is electrically connected to the automobile central motherboard, and the built-in plug of the three interconnecting pins is directly connected to the power motor of the controllerless electric compressor to output three-phase voltage, so that the automobile central motherboard controls the power motor to work.

[0016] Preferably, the lower sealing rubber frame cooperates with the motor plug-in on the power motor of the controllerless electric compressor for sealing, and a sealing ring is provided between the lower surface of the metal support frame and the motor housing of the controllerless electric compressor, and the sealing ring surrounds the lower sealing rubber frame.

[0017] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0018] The function of directly controlling the operation of the electric compressor by the automobile central motherboard is realized, which saves the controller control board and the structure matching the control board, greatly reduces the cost, ensures that the whole structure can meet the insulation requirements of the voltage of 1000V, and the waterproof performance meets the requirements of IP67. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the present invention;

[0021] Figure 3 It is a cross-sectional schematic diagram of the present invention;

[0022] Figure 4 It is a schematic diagram of the decomposition of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the plug-in plastic shell;

[0024] Figure 6 It is a schematic diagram of the structure of the intercommunication pins;

[0025] Figure 7 It is the position and installation matching mode of the present invention during use.

[0026] Reference numerals

[0027] In the attached drawings, 101-plug-in locking screw, 102-plug-in plastic housing, 103-intercommunication pins, 104-upper sealing rubber frame, 105-metal supporting frame, 106-sealing ring, 107-hard insulating glass, 108-lower sealing rubber frame;

[0028] 201- plastic shell bottom plate structure, 202- plastic shell sealing groove structure, 203- plastic shell fixed yielding structure, 204- plastic shell interlocking structure, 205- plastic shell error prevention structure, 206- plastic shell pin aisle;

[0029] 301-intercommunication pin guide structure, 302-intercommunication pin magnetic sheet structure (external plug), 303-intercommunication pin steel pin middle, 304-intercommunication pin steel pin bottom (built-in plug);

[0030] 401-external wiring harness plug, 402-connector structure, 403-controllerless electric compressor, 404-motor plug-in. DETAILED DESCRIPTION

[0031] A connector structure for a controller-free electric compressor includes a metal support frame 105. The metal support frame 105 is provided with three mounting holes side by side. A cylindrical hard insulating glass 107 is provided in each mounting hole. An intercommunication pin 103 is provided in the inner hole of the hard insulating glass 107. The hard insulating glass 107 is rigidly connected to the intercommunication pin 103 and the metal support frame 105 (under normal conditions, no movement or deformation will occur). The hard insulating glass 107 insulates the intercommunication pin 103 and the metal support frame 105.

[0032] External plugs and internal plugs are provided at both ends of the interconnecting pin 103. A plug-in plastic shell 102 is installed on the upper surface of the metal support frame 105. The plug-in plastic shell 102 is provided with plastic shell pin aisles 206 corresponding to the three interconnecting pins 103. The external plug of each interconnecting pin 103 is located in the corresponding plastic shell pin aisle 206, and a gap is left between the external plug of the interconnecting pin 103 and the inner wall of the plastic shell pin aisle 206. An upper sealing rubber frame 104 is provided between the plug-in plastic shell 102 and the metal support frame 105, the hard insulating glass 107, and the interconnecting pin 103. The upper sealing rubber frame 104 seals the gap between adjacent components.

[0033] A lower sealing rubber frame 108 is sleeved on the built-in plug of the three intercommunication pins 103. The lower sealing rubber frame 108 is in contact with the metal support frame 105 and the hard insulating glass 107. The lower sealing rubber frame 108 is used to seal the gap between adjacent components.

[0034] The middle part of the hard insulating glass 107 is cylindrical, the middle part of the hard insulating glass 107 is matched with the mounting hole on the metal support frame 105, the two ends of the hard insulating glass 107 extend out of the mounting holes on the metal support frame 105, the two ends of the hard insulating glass 107 are conical, the upper sealing rubber frame 104 and the lower sealing rubber frame 108 are in contact with the conical surface of the hard insulating glass 107, and form an axial fixing force. The elastic fixing prevents the hard insulating glass 107 from being damaged and can also resist earthquakes.

[0035] The metal support frame 105 is provided with screw holes, each screw hole is matched with a plug-in locking screw 101, and the plug-in locking screw 101 is connected to the surface of the motor housing of the controllerless electric compressor 403 to form a rigid connection between the metal support frame 105 and the motor housing of the controllerless electric compressor 403. The upper surface edge of the metal support frame 105 is provided with a plurality of bosses, each boss is provided with the screw hole in the vertical direction, and the edge portion of the plug-in plastic shell 102 is positioned on the plurality of bosses.

[0036] The width of the external plug of the interconnecting pin 103 is greater than the diameter of the middle part of the interconnecting pin 103, and the upper sealing rubber frame 104 forms an axial limit for the external plug. The external plug of the interconnecting pin 103 is directly plugged into the external wiring harness plug to accept the three-phase input voltage. The external wiring harness is electrically connected to the central motherboard of the automobile. The built-in plugs of the three interconnecting pins 103 are directly plugged into the power motor of the controllerless electric compressor 403 to output the three-phase voltage so that the central motherboard of the automobile controls the power motor to work. The lower sealing rubber frame 108 cooperates with the motor plug-in 404 on the power motor of the controllerless electric compressor 403 to seal. A sealing ring 106 is provided between the lower surface of the metal support frame 105 and the motor housing of the controllerless electric compressor 403, and the sealing ring 106 surrounds the lower sealing rubber frame 108.

[0037] The present invention realizes the function of directly controlling the operation of the electric compressor by the automobile central mainboard, replacing the control method of the compressor controller commonly used in the market to control the compressor, ensuring that the entire structure can meet the insulation requirements of the voltage of 1000V and the waterproof performance meets the requirements of IP67.

[0038] Control principle:

[0039] 1. This structure uses the intercommunication pin 103, the upper end of which is directly connected to the external wiring harness plug to receive the three-phase input voltage, and the lower end is directly connected to the power motor to output the three-phase voltage to make the motor work. The intercommunication pin 103 is integrated from top to bottom, and is directly plugged with the corresponding structure, which is convenient for installation and disassembly, and is easy to assemble and maintain;

[0040] 2. This structure uses the plug-in plastic shell 102 as the plastic skeleton of the entire connector. Its internal structure allows all parts to be installed in its internal space. Its exterior is matched with the external plug, has an error-proof structure, and insulates the inside and outside. The plug-in adopts an integrated molding process, has good sealing, and ensures insulation;

[0041] 3. This structure uses the metal support frame 105 as the metal support frame of the entire connector, and its lower surface is the sealing surface, which forms a sealing structure with the sealing ring 106 and the surface of the motor housing to ensure that the entire plug-in meets IP67 after assembly;

[0042] 4. This structure is composed of an intercommunication pin 103, a metal support frame 105, and a hard insulating glass 107. The intercommunication pin 103 is rigidly connected to the hard insulating glass 107, and the metal support frame 105 is also rigidly connected to the hard insulating glass 107, so that the three intercommunication pins 103 are completely fixed, ensuring the structural requirements for their insertion with the external plug and the built-in motor. The hard insulating glass 107 is made of insulating material, and the hard insulating glass 107 completely wraps the middle part of the intercommunication pin 103, ensuring the insulation performance of the intercommunication pin 103 and the metal support frame 105;

[0043] 5. This structure ensures the electrical clearance between the three inter-connecting pins 103 through the inter-connecting pins 103, the upper sealing rubber frame 104, the metal support frame 105, the hard insulating glass 107, and the lower sealing rubber frame 108;

[0044] 6. This structure ensures that after the structure is installed on the compressor, lubricating oil will not enter between the interconnecting pins 103 and the metal supporting frame 105 through the interconnecting pins 103, the metal supporting frame 105, the hard insulating glass 107, and the lower sealing rubber frame 108, thereby ensuring the creepage distance therebetween, so that this structure can be applied to the vehicle system with a voltage platform of more than 1000V;

[0045] 7. This structure ensures the electrical clearance between the interconnecting pins 103 and the compressor housing after the structure is assembled through the lower sealing rubber frame 108, the plastic shell pin channel 206, and the motor plug-in 404, so that this structure can be applied to the vehicle system with a voltage platform above 1000V.

[0046] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A connector structure for a controllerless electric compressor, characterized in that: It comprises a metal support frame, three mounting holes are arranged side by side on the metal support frame, each mounting hole is matched with a cylindrical hard insulating glass, the inner hole of the hard insulating glass is matched with an intercommunication pin, the hard insulating glass is rigidly connected with the intercommunication pin and the metal support frame, and the hard insulating glass insulates the intercommunication pin and the metal support frame; An external plug and an internal plug are provided at both ends of the intercommunication pin, a plug-in plastic shell is installed on the upper surface of the metal support frame, and a plastic shell pin aisle is provided for the plug-in plastic shell corresponding to the three intercommunication pins, and the external plug of each intercommunication pin is located in the corresponding plastic shell pin aisle, and a gap is left between the external plug of the intercommunication pin and the inner wall of the plastic shell pin aisle, and an upper sealing rubber frame is provided between the plug-in plastic shell and the metal support frame, the hard insulating glass, and the intercommunication pin, and the upper sealing rubber frame seals the gap between adjacent components; A lower sealing rubber frame is sleeved on the built-in plug of the three intercommunication pins. The lower sealing rubber frame is in contact with the metal support frame and the hard insulating glass. The lower sealing rubber frame is used for sealing the gap between adjacent components.

2. The connector structure of a controller-free electric compressor according to claim 1, characterized in that: After the interconnecting pins and the metal supporting frame are fixed in position, the hard insulating glass is formed and connected to the interconnecting pins and the metal supporting frame.

3. The connector structure of a controller-free electric compressor according to claim 1, characterized in that: The plug-in plastic shell is integrally formed on the metal support frame.

4. The connector structure of a controller-less electric compressor according to claim 1, characterized in that: The middle part of the hard insulating glass is cylindrical, the middle part of the hard insulating glass cooperates with the mounting hole on the metal support frame, both ends of the hard insulating glass extend out of the mounting holes on the metal support frame, both ends of the hard insulating glass are conical, the upper sealing rubber frame and the lower sealing rubber frame are in contact with the conical surface of the hard insulating glass, and form an axial fixing force.

5. The connector structure of a controller-less electric compressor according to claim 1, characterized in that: The metal support frame is provided with screw holes, each screw hole is respectively matched with a plug-in locking screw, and the plug-in locking screw is connected and fixed to the surface of the motor housing of the controllerless electric compressor, so that a rigid connection is formed between the metal support frame and the motor housing of the controllerless electric compressor.

6. The connector structure of a controller-less electric compressor according to claim 5, characterized in that: The upper surface edge of the metal support frame is provided with a plurality of bosses, each boss is provided with the screw hole in the vertical direction, and the edge part of the plug-in plastic shell is sleeved on the plurality of bosses for positioning.

7. The connector structure of a controller-less electric compressor according to claim 1, characterized in that: The width of the external plug of the intercommunication pin is greater than the diameter of the middle part of the intercommunication pin, and the upper sealing rubber frame forms an axial limit for the external plug.

8. The connector structure of a controller-less electric compressor according to claim 1, characterized in that: The external plug of the interconnecting pins is directly connected to the external wiring harness plug to accept three-phase input voltage. The external wiring harness is electrically connected to the vehicle central motherboard. The built-in plug of the three interconnecting pins is directly connected to the power motor of the controllerless electric compressor to output three-phase voltage, so that the vehicle central motherboard controls the power motor to work.

9. The connector structure of a controller-less electric compressor according to claim 8, characterized in that: The lower sealing rubber frame cooperates with the motor plug-in on the power motor of the controllerless electric compressor for sealing. A sealing ring is arranged between the lower surface of the metal support frame and the motor housing of the controllerless electric compressor, and the sealing ring surrounds the lower sealing rubber frame.

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