Liquid cooling structure of electric turbocharger

Abstract

The utility model provides a liquid cooling structure of an electric turbocharger, which comprises a heat conduction part fixedly connected in an accommodating cavity, and the heat conduction part is fixedly connected with a motor stator, so that heat generated when the motor stator works is transferred to a shell body, and the heat is discharged through the shell body; the motor stator shell further comprises a liquid cooling part, the cooling liquid flow channel is embedded in the side wall of the shell body, circulating cooling liquid is introduced into the cooling liquid flow channel, cooling liquid heat dissipation is added on the basis of heat dissipation through the shell body, heat of a motor stator is effectively discharged, and therefore the temperature of the motor stator is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of turbocharging, in particular to a liquid cooling structure of an electric turbocharger. Background Art

[0002] An electric turbocharger uses an electric motor to directly drive the compressor instead of relying on the energy of the exhaust gas. Since the speed of the electric motor can be adjusted independently of the engine speed, the best boost effect can be achieved throughout the engine speed range.

[0003] During the operation of the electric turbocharger, the ambient temperature of the working environment is relatively high, and the electric motor and its control module also generate a large amount of heat. If this heat cannot be effectively reduced, it may cause the electric turbocharger to overheat, thereby affecting performance or even damaging the equipment. Among them, the temperature of the permanent magnet motor is too high, which will cause the reversible and impossible demagnetization of the permanent magnet, thereby reducing the power density of the motor, and the stator of the motor is often made of permanent magnets. How to effectively reduce the heat of the electric turbocharger and reduce the heating of the stator is a problem that R&D personnel are committed to solving. Utility Model Content

[0004] The problem to be solved by the utility model is to provide a liquid cooling structure capable of reducing the temperature of the stator of the electric turbocharger motor.

[0005] The technical solution adopted by the utility model to solve the above problems is: an electric turbocharger liquid cooling structure, comprising:

[0006] A housing body, wherein the housing body has a receiving cavity for receiving the motor;

[0007] a heat conducting part, wherein the heat conducting part is configured to fix the motor stator in the accommodating cavity; the heat conducting part conducts the heat of the motor stator to the housing body; and

[0008] A liquid cooling part, wherein the liquid cooling part includes a cooling liquid flow channel; the cooling liquid flow channel is buried in the side wall of the shell body so that the cooling liquid circulating in the cooling liquid flow channel can take away the heat conducted from the heat conducting part to the shell body.

[0009] Compared with the prior art, the utility model includes a heat-conducting part fixedly connected to the accommodating cavity, and the heat-conducting part is fixedly connected to the motor stator, so as to transfer the heat generated by the motor stator during operation to the outer shell body, and discharge the heat through the outer shell body; it also includes a liquid cooling part, the coolant flow channel is buried in the side wall of the outer shell body and has circulating coolant inside, on the basis of heat dissipation through the outer shell body, the coolant heat dissipation is increased, so that the heat of the motor stator is effectively discharged, thereby reducing the temperature of the motor stator.

[0010] The utility model discloses an electric turbocharger liquid cooling structure, wherein the shell body comprises a thickened layer arranged on the side; and the coolant flow channel is arranged to be integrally formed with the thickened layer.

[0011] The utility model discloses an electric turbocharger liquid cooling structure, wherein the coolant flow channel is arranged to be formed by hollowing out the inside of the thickened layer; the coolant flow channel is arranged to be distributed in a spiral shape inside the thickened layer.

[0012] The utility model provides an electric turbocharger liquid cooling structure, wherein the liquid cooling part further comprises a liquid inlet interface and a liquid outlet interface which are arranged at both ends of the coolant flow channel; the liquid inlet interface and the liquid outlet interface are arranged to be fixedly connected to the outside of the shell body.

[0013] The utility model provides an electric turbocharger liquid cooling structure, wherein the cross section of the coolant flow channel is arranged to include an arched edge and a parallel edge; the parallel edge faces the heat conducting part.

[0014] The utility model provides an electric turbocharger liquid cooling structure, wherein the heat conducting part is arranged to be integrally formed with the motor stator.

[0015] The utility model discloses an electric turbocharger liquid cooling structure, wherein the heat conducting part is arranged in a circular ring shape; the inner side wall of the heat conducting part is fixedly connected to the outer side wall of the motor, and the outer side wall of the heat conducting part is fixedly connected to the inner side wall of the accommodating cavity.

[0016] The utility model discloses an electric turbocharger liquid cooling structure, wherein the accommodating chamber further comprises a conical wall, a first cylindrical wall and a second cylindrical wall which are arranged inside and continuously; the outer wall of the heat conducting part is arranged to fit tightly with the first cylindrical wall; one end of the heat conducting part is limited by the connection between the first cylindrical wall and the second cylindrical wall.

[0017] The utility model provides an electric turbocharger liquid cooling structure, wherein the cooling liquid flow channel is distributed outside the first cylindrical wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the utility model from a side perspective;

[0019] Figure 2 It is a three-dimensional schematic diagram of the utility model from another side perspective;

[0020] Figure 3 It is a side view schematic diagram of the utility model;

[0021] Figure 4 It is a cross-sectional schematic diagram of the utility model;

[0022] Figure 5 is a schematic cross-sectional view of a coolant flow channel;

[0023] Figure 6 Schematic diagrams of some embodiments of the heat conducting part;

[0024] Figure 7 are schematic diagrams of other embodiments of the heat conducting portion;

[0025] Figure 8 It is a structural schematic diagram of the runner blank mold;

[0026] Fig. 9 It is a schematic diagram of the runner blank mold and the exploded view of the runner blank. DETAILED DESCRIPTION

[0027] Before describing in detail any embodiment of the utility model, it should be understood that the utility model is not limited in its application to the construction and arrangement details of the components described below or illustrated in the following figures. The utility model can have other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used here are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and its variations herein is intended to cover the items and their equivalents and additional items displayed below. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are widely used and cover direct installation and indirect installation, connection, support and connection. In addition, "connect" and "couple" are not limited to physical or mechanical connections or connections.

[0028] Furthermore, on the first aspect, in the disclosure of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second aspect, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0029] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0030] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0031] See also Figure 1-7 The electric turbocharger liquid cooling structure shown in the figure comprises a housing body 1, a heat conducting part 2 and a liquid cooling part 3. The housing body 1 has a receiving cavity 11 for receiving the motor; the heat conducting part 2 is configured to fix the motor stator in the receiving cavity 11; the heat conducting part 2 conducts the heat of the motor stator to the housing body 1; the liquid cooling part 3 comprises a cooling liquid flow channel 31; the cooling liquid flow channel 31 is buried in the side wall of the housing body 1, so that the cooling liquid circulating in the cooling liquid flow channel 31 can take away the heat conducted from the heat conducting part 2 to the housing body 1.

[0032] In actual use, the utility model includes a heat-conducting part 2 fixedly connected to the accommodating cavity 11, and the heat-conducting part 2 is fixedly connected to the motor stator so as to transfer the heat generated by the motor stator during operation to the outer shell body 1, and discharge the heat through the outer shell body 1; it also includes a liquid cooling part 3, and a coolant flow channel 31 is buried in the side wall of the outer shell body 1 and has circulating coolant inside. On the basis of heat dissipation through the outer shell body 1, the heat dissipation of the coolant is increased, so that the heat of the motor stator is effectively discharged, thereby reducing the temperature of the motor stator.

[0033] Please continue reading Figure 4 , wherein the shell body 1 includes a thickened layer 12 arranged on the side; the coolant flow channel 31 is configured to be integrally formed with the thickened layer 12.

[0034] Through the design of the thickened layer 12, a design space is provided for the coolant flow channel 31, and the coolant flow channel 31 and the thickened layer 12 are integrally formed, so that the contact between the shell body 1 and the coolant is more sufficient and the heat dissipation effect is better; and, compared with independently arranged coolant pipelines, the number of parts is less and the installation is easier. In addition, since the coolant flow channel 31 is isolated from the motor, it can effectively prevent the coolant from leaking into the motor and causing damage to the motor.

[0035] Please read further Figure 4 , wherein the coolant flow channel 31 is configured to be formed by hollowing out the inside of the thickened layer 12 ; the coolant flow channel 31 is configured to be distributed in a spiral shape inside the thickened layer 12 .

[0036] By hollowing out the thickened layer 12 to provide the coolant flow channel 31, it is also possible to save materials and reduce the overall weight of the electric turbocharger; the spiral coolant flow channel 31 can achieve uniform heat dissipation.

[0037] Please continue reading Figure 1 , Figure 2 The liquid cooling part 3 further includes a liquid inlet interface 32 and a liquid outlet interface 33 arranged at both ends of the cooling liquid flow channel 31; the liquid inlet interface 32 and the liquid outlet interface 33 are arranged to be fixedly connected to the outside of the shell body 1.

[0038] When in use, the liquid inlet interface 32 and the liquid outlet interface 33 are connected to an externally provided coolant circulation device, so that the coolant circulation device drives the coolant to circulate in the coolant flow channel 31 .

[0039] Please continue reading Figure 5 , wherein the cross section of the coolant flow channel 31 is configured to include an arched edge 311 and a parallel edge 312 ; the parallel edge 312 faces the heat conducting portion 2 .

[0040] When in use, since the parallel edges 312 face the heat conducting part 2 , the parallel edges 312 are more likely to absorb the heat transferred from the heat conducting part 2 than the arched edges 311 , thereby achieving a better heat dissipation effect.

[0041] Please continue reading Figure 6 In some embodiments, the heat conducting portion 2 is configured to be integrally formed with the motor stator.

[0042] Under this setting, the heat conducting part 2 is covered on the outer wall of the motor stator and is formed integrally with the motor stator, which is conducive to reducing the installation steps and reducing the difficulty of assembly. The heat conducting part 2 is in full contact with the motor stator, which can greatly improve the heat conduction efficiency and the heat dissipation effect.

[0043] Please continue reading Figure 7 , wherein the heat conducting part 2 is arranged in a circular ring shape; the inner wall of the heat conducting part 2 is fixedly connected to the outer wall of the motor, and the outer wall of the heat conducting part 2 is fixedly connected to the inner wall of the accommodating cavity 11.

[0044] The circular heat-conducting part 2 is designed to wrap the motor stator from the side in all directions, which not only provides a stable installation carrier for the motor stator, but also can conduct the heat of the motor stator in all directions and evenly transfer the heat to the outer shell body 1 so that the outer shell body 1 can play a heat dissipation role.

[0045] It is worth mentioning that, since the heat conducting part 2 and the motor stator are two independently arranged parts, the heat conducting part 2 can be made of a material with a better thermal conductivity than the motor stator, so as to increase the heat transfer effect and further improve the heat dissipation effect.

[0046] Please continue reading Figure 4 , wherein the accommodating cavity 11 further includes a conical wall 111, a first cylindrical wall 112 and a second cylindrical wall 113 which are arranged inside and continuously; the outer wall of the heat-conducting part 2 is arranged to fit tightly with the first cylindrical wall 112; one end of the heat-conducting part 2 is limited by the connection between the first cylindrical wall 112 and the second cylindrical wall 113.

[0047] During installation, the conical wall 111 is provided so that the installer can load the heat conducting part 2 into the accommodating cavity 11, and clamp the heat conducting part 2 through the first cylindrical wall 112. In addition, the second cylindrical wall 113 is smaller than the first cylindrical wall 112, so that a limit is formed at the connection between the two, and one end of the heat conducting part 2 is supported by the limit, so that the installer can judge whether the heat conducting part 2 is installed in place.

[0048] Please read further Figure 4 , wherein the coolant flow channel 31 is distributed outside the first cylindrical wall 112 .

[0049] When in use, since the outer wall of the heat-conducting portion 2 is arranged to fit closely with the first cylindrical wall 112 , distributing the coolant flow channel 31 outside the first cylindrical wall 112 has a better heat-conducting effect.

[0050] For further information, see Figure 8 , Fig. 9 The aforementioned coolant flow channel 31 can be processed by the following method:

[0051] Step A, manufacturing a runner blank mold: manufacturing a runner blank mold 6, the runner blank mold 6 having a cavity 61 consistent with the shape of the coolant flow channel 31, for molding a runner blank 7;

[0052] Step B, manufacturing the runner blank; casting the sandy raw material in the mold cavity 61 so as to manufacture the runner blank 7 with the same shape as the coolant flow channel 31 through the mold cavity 61;

[0053] Step C, processing the runner blank: cutting off the casting channel 71 of the runner blank 7;

[0054] Step D, manufacturing the motor housing: placing the runner blank 7 in the mold of the housing body 1, and casting molten metal in the mold of the housing body 1, and after the molten metal is cooled and solidified, taking out the housing body 1;

[0055] Step E, taking out the flow channel blank: crushing the flow channel blank 7 and pouring the crushed flow channel blank 7 out of the shell body 1.

[0056] In the aforementioned method processing of the coolant flow channel 31, the flow channel blank mold 6 has a simple structure, low manufacturing difficulty and low manufacturing cost, and the flow channel blank 7 is made of sandy material, which has low material cost and is easy to obtain; when manufacturing the outer shell body 1, the pre-made flow channel blank 7 is used, so that the mold structure of the outer shell body 1 is simplified, and there is no need to form the coolant flow channel 31 through complex structures such as core pulling, and the removal of the flow channel blank 7 is relatively simple. It is only necessary to shatter the flow channel blank 7 made of sandy material and pour it out from multiple sand discharge channels, thereby reducing the mold cost and manufacturing difficulty of the outer shell body 1.

[0057] The above description is only for the best embodiment of the utility model, but it cannot be understood as a limitation of the claims. The utility model is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the protection scope of the independent claims of the utility model are within the protection scope of the utility model.

Claims

1. A liquid cooling structure for an electric turbocharger, It is characterized in that include: A housing body (1), wherein the housing body (1) has a receiving chamber (11) for receiving the motor; a heat conducting portion (2), wherein the heat conducting portion (2) is configured to fix the motor stator in the accommodating cavity (11); the heat conducting portion (2) conducts the heat of the motor stator to the housing body (1); and A liquid cooling part (3), wherein the liquid cooling part (3) comprises a cooling liquid flow channel (31); the cooling liquid flow channel (31) is buried in the side wall of the shell body (1), so that the cooling liquid circulating in the cooling liquid flow channel (31) can carry away the heat conducted from the heat conducting part (2) to the shell body (1).

2. The electric turbocharger liquid cooling structure according to claim 1, Features: The shell body (1) comprises a thickened layer (12) arranged on a side surface; the coolant flow channel (31) is arranged to be integrally formed with the thickened layer (12).

3. The electric turbocharger liquid cooling structure according to claim 2, Features: The coolant flow channel (31) is configured to be formed by hollowing out the interior of the thickened layer (12); the coolant flow channel (31) is configured to be distributed in a spiral shape inside the thickened layer (12).

4. The electric turbocharger liquid cooling structure according to claim 3, Features: The liquid cooling part (3) further comprises a liquid inlet interface (32) and a liquid outlet interface (33) arranged at both ends of the cooling liquid flow channel (31); the liquid inlet interface (32) and the liquid outlet interface (33) are arranged to be fixedly connected to the outside of the shell body (1).

5. The electric turbocharger liquid cooling structure according to claim 1, Features: The cross section of the coolant flow channel (31) is configured to include an arched edge (311) and a parallel edge (312); the parallel edge (312) faces the heat conducting portion (2).

6. The electric turbocharger liquid cooling structure according to claim 1, Features: The heat conducting part (2) is configured to be integrally formed with the motor stator.

7. The electric turbocharger liquid cooling structure according to claim 1, Features: The heat conducting part (2) is arranged in a circular ring shape; the inner wall of the heat conducting part (2) is fixedly connected to the outer wall of the motor, and the outer wall of the heat conducting part (2) is fixedly connected to the inner wall of the accommodating cavity (11).

8. The electric turbocharger liquid cooling structure according to claim 6 or 7, Features: The accommodating cavity (11) further comprises a conical wall (111), a first cylindrical wall (112) and a second cylindrical wall (113) which are arranged inside and are arranged continuously; the outer wall of the heat conducting part (2) is arranged to be closely fitted with the first cylindrical wall (112); and one end of the heat conducting part (2) is limited by the connection between the first cylindrical wall (112) and the second cylindrical wall (113).

9. The electric turbocharger liquid cooling structure according to claim 8, Features: The coolant flow channel (31) is distributed outside the first cylindrical wall (112).

Images