Electronic water pump for an automotive thermal management integrated module

Abstract

The utility model discloses an electronic water pump for automobile heat management integrated module, including the shell body, the shell body one end is equipped with the pump head, and the other end is equipped with the back cover, be provided with the impeller in the pump head, just the impeller with the rotor assembly in the shell body fixed connection makes the impeller with the rotor assembly synchronous rotation, be equipped with the middle casing in the shell body, one side of the middle casing with the pump head constitute wet cavity, to accommodate the impeller and the rotor assembly, the other side of the middle casing with the shell body constitute dry cavity, to accommodate stator assembly. The impeller in this electronic water pump is directly connected with the fixed rotor assembly, and adopts eight blade structure, and compared with the traditional central shaft impeller, the noise is smaller, and the power consumption is lower.

Description

Technical Field

[0001] This utility model relates to the field of electronic water pump technology, and in particular to an electronic water pump for an automotive thermal management integrated module. Background Technology

[0002] In the thermal management system of new energy vehicles, the electronic water pump is a crucial component. The water pump powers the water circulation within the system, ensuring the required hydraulic performance and facilitating heat exchange between various components. In practical applications, due to the functional requirements of the thermal management system and the overall vehicle comfort, a comprehensive consideration must be given to the water pump's hydraulic performance, power consumption, heat dissipation, noise, and reliability.

[0003] Existing electric water pumps are mostly connected to an impeller via a central shaft, and the impeller is driven to rotate by the rotor. This traditional structure has high power consumption and noise, so there is an urgent need for a new type of electric water pump to meet the comfort requirements of the entire vehicle. Utility Model Content

[0004] The purpose of this invention is to provide an electronic water pump for an automotive thermal management integrated module, which adopts a new structural design to solve the problems of high power consumption and high noise in electronic water pumps.

[0005] To solve the above-mentioned technical problems, this utility model provides an electronic water pump for an automotive thermal management integrated module, including a housing, a pump head installed at one end of the housing, and a rear cover installed at the other end; An impeller is provided inside the pump head, and the impeller is fixedly connected to the rotor assembly inside the outer casing, so that the impeller rotates synchronously with the rotor assembly. The outer casing is provided with a middle casing. One side of the middle casing and the pump head form a wet cavity for accommodating the impeller and the rotor assembly. The other side of the middle casing and the outer casing form a dry cavity for accommodating the stator assembly.

[0006] Preferably, an inlet is provided at the center of the pump head along the central axis, and an outlet is provided on the side wall. Under the action of the impeller, water flows in from the inlet of the pump head, is pressurized by the impeller, and is discharged from the outlet.

[0007] Preferably, the inlet and outlet of the pump head are directly connected and fixed to the interface of the water-side flow channel plate of the thermal management integrated module.

[0008] Preferably, the stator assembly is fixedly installed in the housing, while the rotor assembly is mounted on the pump shaft via a bearing sleeve.

[0009] Preferably, one end of the pump shaft is fixedly connected to the middle housing, and the other end extends into the process hole of the impeller.

[0010] Preferably, a friction pad is provided on the end face of the bearing, and the friction pad is embedded in the pump head, and abuts against the bearing on the pump shaft through the friction pad.

[0011] Preferably, the friction pad is a ceramic friction pad.

[0012] Preferably, the impeller has eight blades evenly distributed on it, and each blade is provided with a welding post, which is welded and fixed to the rotor assembly.

[0013] Preferably, the stator frame of the stator assembly has a pre-set winding groove, so that the winding is neatly arranged in the winding groove; and multiple three-phase pins are provided on the stator frame for welding connections.

[0014] Preferably, a waterproof and breathable valve is installed on the rear cover, and the waterproof and breathable valve is connected to the dry cavity inside the outer shell.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. The impeller in this electronic water pump is directly and fixedly connected to the rotor assembly, and adopts an eight-blade structure, which results in lower noise and lower power consumption compared with traditional central shaft impellers; 2. The electronic water pump has a middle shell in the outer casing. One side of the middle shell and the pump head form a wet chamber to accommodate the impeller and rotor assembly; the other side of the middle shell and the outer casing form a dry chamber to accommodate the stator assembly. The middle shell is used to achieve dry and wet separation. Compared with the traditional sealing ring and screw structure, it simplifies the assembly process, reduces costs, and increases sealing reliability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an electronic water pump for an automotive thermal management integrated module provided by this utility model; Figure 2 This is a top view of an electronic water pump for an automotive thermal management integrated module provided by this utility model; Figure 3 This is a bottom view of an electronic water pump for an automotive thermal management integrated module provided by this utility model; Figure 4 This is a cross-sectional view of an electronic water pump for an automotive thermal management integrated module provided by this utility model; Figure 5 This is a schematic diagram of the impeller structure provided by this utility model; Figure 6 This is a structural schematic diagram of the stator assembly provided by this utility model.

[0017] In the diagram: 1. Outer casing; 2. Pump head; 201. Inlet; 202. Outlet; 3. Rear cover; 4. Impeller; 401. Blade; 402. Welded column; 5. Rotor assembly; 6. Middle casing; 7. Stator assembly; 701. Three-phase pin; 8. Bearing; 9. Pump shaft; 10. Friction pad; 11. Waterproof and breathable valve. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0021] This utility model provides an electronic water pump for an integrated automotive thermal management module. Please refer to [link / reference]. Figure 1-4 The system includes an outer casing 1, with a pump head 2 mounted at one end and a rear cover 3 mounted at the other end. An impeller 4 is disposed inside the pump head 2 and is fixedly connected to a rotor assembly 5 inside the outer casing 1, so that the impeller 4 rotates synchronously with the rotor assembly 5. The outer casing 1 is provided with a middle casing 6, one side of which forms a wet cavity with the pump head 2 to accommodate the impeller 4 and the rotor assembly 5; the other side of which forms a dry cavity with the outer casing 1 to accommodate a stator assembly 7.

[0022] This electronic water pump uses a middle shell to achieve dry and wet separation. Compared with the traditional sealing ring and screw structure, it simplifies the assembly process, reduces costs, and increases sealing reliability.

[0023] Specifically, an inlet 201 is provided at the center of the pump head 2 along the central axis, and an outlet 202 is provided on the side wall. Under the action of the impeller 4, water flows into the pump head 2 from the inlet 201, and after being pressurized by the impeller 4, it is discharged from the outlet 202.

[0024] In this embodiment, the inlet 201 and outlet 202 of the pump head 2 are directly plugged into and fixed to the interface of the water-side flow channel plate of the thermal management integrated module, making the electronic water pump an insertion type water pump.

[0025] For further details, please refer to Figure 4 The stator assembly 7 is fixedly installed inside the outer casing 1, while the rotor assembly 5 is mounted on the pump shaft 9 via a bearing 8.

[0026] In this embodiment, one end of the pump shaft 9 is fixedly connected to the middle housing 6, and the other end extends into the process hole of the impeller 4; a friction pad 10 is provided on the end face of the bearing 8, and the friction pad 10 is embedded in the pump head 2, and abuts against the bearing 8 on the pump shaft 9 through the friction pad 10.

[0027] When the rotor assembly 5 rotates around the pump shaft 9, since the impeller 4 is fixedly connected to the rotor assembly 5, the impeller 4 rotates relative to the pump shaft 9. At this time, the friction pad 10 on the impeller 4 contacts and rubs against the bearing 8. Since the friction pad is a ceramic friction pad, its wear resistance can be improved.

[0028] In this embodiment, the friction pad 10 is a ceramic friction pad.

[0029] For details, please refer to Figure 5 The impeller 4 has eight blades 401 evenly distributed on it, and each blade 401 is provided with a welding post 402. The blades are welded and fixed to the rotor assembly 5 through the welding post 402, which has excellent hydraulic and NVH performance.

[0030] For details, please refer to Figure 6 The stator frame of the stator assembly 7 has a pre-set winding groove, which allows the winding to be neatly arranged in the winding groove; and multiple three-phase pins 701 are provided on the stator frame for welding connections.

[0031] For details, please refer to Figure 3 The rear cover 3 is equipped with a waterproof and breathable valve 11, which is connected to the dry cavity inside the outer shell 1 to ensure protection while reducing the risk of condensation short circuit in the dry cavity.

[0032] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. An electronic water pump for an automotive thermal management integrated module, characterized in that, Includes an outer shell (1), one end of which is fitted with a pump head (2) and the other end with a rear cover (3); An impeller (4) is provided inside the pump head (2), and the impeller (4) is fixedly connected to the rotor assembly (5) inside the outer casing (1), so that the impeller (4) rotates synchronously with the rotor assembly (5); The outer casing (1) is provided with a middle casing (6). One side of the middle casing (6) forms a wet cavity with the pump head (2) to accommodate the impeller (4) and the rotor assembly (5); the other side of the middle casing (6) forms a dry cavity with the outer casing (1) to accommodate the stator assembly (7).

2. The electronic water pump for an automotive thermal management integrated module as described in claim 1, characterized in that, An inlet (201) is provided at the center of the pump head (2) along the central axis, and an outlet (202) is provided on the side wall. Under the action of the impeller (4), water flows into the pump head (2) from the inlet (201), and is discharged from the outlet (202) after being pressurized by the impeller (4).

3. The electronic water pump for an automotive thermal management integrated module as described in claim 2, characterized in that, The inlet (201) and outlet (202) of the pump head (2) are directly connected and fixed to the interface of the water-side flow channel plate of the thermal management integrated module.

4. The electronic water pump for an automotive thermal management integrated module as described in claim 1, characterized in that, The stator assembly (7) is fixedly installed inside the outer casing (1), while the rotor assembly (5) is mounted on the pump shaft (9) via a bearing (8).

5. The electronic water pump for an automotive thermal management integrated module as described in claim 4, characterized in that, One end of the pump shaft (9) is fixedly connected to the middle housing (6), and the other end extends into the process hole of the impeller (4).

6. The electronic water pump for an automotive thermal management integrated module as described in claim 5, characterized in that, A friction pad (10) is provided on the end face of the bearing (8), and the friction pad (10) is embedded in the pump head (2), and the friction pad (10) abuts against the bearing (8) on the pump shaft (9).

7. The electronic water pump for an automotive thermal management integrated module as described in claim 6, characterized in that, The friction pad (10) is a ceramic friction pad.

8. The electronic water pump for an automotive thermal management integrated module as described in claim 1, characterized in that, The impeller (4) has eight blades (401) evenly distributed on it, and each blade (401) is provided with a welding post (402), which is welded and fixed to the rotor assembly (5) through the welding post (402).

9. The electronic water pump for an automotive thermal management integrated module as described in claim 1, characterized in that, The stator frame of the stator assembly (7) has a pre-set winding groove, so that the winding is neatly arranged in the winding groove; and multiple three-phase pins (701) are provided on the stator frame for welding connections.

10. The electronic water pump for an automotive thermal management integrated module as described in claim 1, characterized in that, A waterproof and breathable valve (11) is installed on the rear cover (3), and the waterproof and breathable valve (11) is connected to the dry cavity inside the outer shell (1).

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