Cooling system

Abstract

The utility model discloses a cooling system which comprises an electric control shell, two motor shells, an electric control cooling loop and a motor cooling loop, the two motor shells are symmetrically distributed, one electric control shell is located in the middle of the upper portion of the two motor shells, and the other electric control shell is located in the middle of the lower portion of the two motor shells. The electric control cooling loop comprises a first electric control cooling loop and a second electric control cooling loop, the motor cooling loop comprises a first motor cooling loop and a second motor cooling loop, and the first electric control cooling loop and the second electric control cooling loop are both arranged in the electric control shell. The first motor cooling loop and the second motor cooling loop are respectively arranged in the two motor shells, the first electric control cooling loop is communicated with the first motor cooling loop, and the second electric control cooling loop is communicated with the second motor cooling loop. The cooling device has the advantages of being high in cooling efficiency, compact in structure and small in occupied space.

Description

Technical Field

[0001] The utility model relates to the technical field of electric drive systems, and in particular to a cooling system for cooling electric drive systems. Background Art

[0002] A vehicle's electric drive system typically includes a motor, a reducer, and a motor controller, requiring cooling devices to cool the motor, reducer, and motor controller separately. In some electric drive systems, the motor and motor controller share a single cooling device. However, this arrangement is not ideal for cooling dual motors. After the coolant passes through the first motor and then flows into the other motor, the temperature of the coolant has already risen, resulting in poor cooling for the other motor. Furthermore, existing cooling devices require external cooling pipes to be arranged between the electronic control housing and the motor housing to transfer the coolant. This results in a complex structure, occupies a lot of space, is costly, and has low cooling efficiency.

[0003] Therefore, it is necessary to design a cooling system with high cooling efficiency, compact structure and small space occupation. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a cooling system with high cooling efficiency, compact structure and small space occupation.

[0005] The technical solution of the present utility model provides a cooling system, including an electronic control housing, a motor housing, an electronic control cooling circuit and a motor cooling circuit. There are two motor housings and they are symmetrically distributed. One electronic control housing is located in the upper middle part of the two motor housings. The electronic control cooling circuit includes a first electronic control cooling circuit and a second electronic control cooling circuit. The motor cooling circuit includes a first motor cooling circuit and a second motor cooling circuit. The first electronic control cooling circuit and the second electronic control cooling circuit are both arranged in the electronic control housing. The first motor cooling circuit and the second motor cooling circuit are respectively arranged in the two motor housings. The first electronic control cooling circuit is connected to the first motor cooling circuit, and the second electronic control cooling circuit is connected to the second motor cooling circuit.

[0006] Furthermore, it also includes a cooling main pipeline, which is arranged in the electronic control housing and is communicated with the inlets of the first electronic control cooling circuit and the second electronic control cooling circuit respectively.

[0007] Furthermore, the main cooling pipeline includes an access pipe and a branch pipe, the access pipe is used to connect to an external cooling source, the access pipe is connected to the branch pipe, and the branch pipe is respectively connected to the inlet of the first electronically controlled cooling circuit and the second electronically controlled cooling circuit.

[0008] Furthermore, the electric control housing includes a cover plate and a bottom shell;

[0009] The first electrically controlled cooling circuit and the second electrically controlled cooling circuit both include an input pipe, a cooling trough, and an output pipe. The two input pipes are connected to the branch pipe. The input pipe and the output pipe are formed inside the bottom plate of the bottom shell. The cooling trough is opened on the inner side surface of the bottom plate, and the two cooling troughs are arranged side by side.

[0010] Furthermore, the inlet of the access pipe is opened on the side of the bottom shell.

[0011] Furthermore, a power module is installed in the electric control housing, a side surface of the power module is provided with a plurality of heat sinks, the heat sinks are inserted into the cooling grooves, and the power module and the edge of the cooling groove are sealed by a sealing ring.

[0012] Furthermore, a plurality of hexagonal reinforcing ribs are provided on the inner side surface of the bottom plate of the electronic control housing.

[0013] Furthermore, the hexagonal reinforcement ribs and the cooling grooves are connected via slash reinforcement ribs.

[0014] Furthermore, the motor housing includes a first end cover, a main shell and a second end cover, the main shell is cylindrical, the first end cover is provided on one side of the main shell, and the second end cover is provided on the other side of the main shell;

[0015] The first motor cooling circuit and the second motor cooling circuit both include a liquid inlet, a spiral cooling channel and a liquid outlet, the liquid inlet is connected to the output pipe, the spiral cooling channel is arranged inside the main shell, and the liquid inlet and the liquid outlet are arranged on the outer wall of the main shell and are connected to the spiral cooling channel.

[0016] Furthermore, the outlet of the output pipe is opened on the bottom surface of the bottom shell, and the liquid inlet is arranged on the top surface of the main shell.

[0017] The above technical solution has the following beneficial effects:

[0018] The utility model provides a motor cooling circuit for each motor, and the two motor cooling circuits operate independently, resulting in higher cooling efficiency and better cooling effects. Furthermore, the motor cooling circuit and the electronic control cooling circuit are both located within the motor and electronic control housings, eliminating the need for external cooling piping. This results in a compact structure, minimal space consumption, and further improved cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the drawings:

[0020] Figure 1 This is a three-dimensional diagram of a cooling system in one embodiment of the present invention;

[0021] Figure 2 This is an exploded view of a cooling system in one embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of a motor housing in one embodiment of the present utility model;

[0023] Figure 4 It is a schematic diagram of an electric control housing in one embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the electric control housing in one embodiment of the present utility model;

[0025] Figure 6 It is a schematic diagram of the electronically controlled cooling circuit and the motor cooling circuit in one embodiment of the present invention.

[0026] Reference table of accompanying symbols:

[0027] Electronic control housing 1: cover plate 11, bottom shell 12, hexagonal reinforcement ribs 13;

[0028] Motor housing 2: first end cover 21, main housing 22, second end cover 23;

[0029] Electronically controlled cooling circuit 3: input pipe 31, cooling tank 32, output pipe 33;

[0030] Motor cooling circuit 4: liquid inlet 41, spiral cooling channel 42, liquid outlet 43;

[0031] Cooling main pipeline 5: access pipe 51, branch pipe 52;

[0032] Reducer housing 6. DETAILED DESCRIPTION

[0033] The specific implementation of the present utility model will be further described below with reference to the accompanying drawings.

[0034] It is easy to understand that according to the technical solution of the present invention, a variety of structural methods and implementation methods can be replaced by those skilled in the art without changing the essential spirit of the present invention. Therefore, the following specific embodiments and drawings are only illustrative of the technical solution of the present invention and should not be regarded as the entire present invention or as a limitation or restriction of the technical solution of the utility model.

[0035] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to the structure shown in the drawings. They are relative concepts and may vary depending on the location and usage of the device. Therefore, these or other directional terms should not be interpreted as restrictive.

[0036] In some embodiments of the present invention, Figure 1 and Figure 6 As shown, the cooling system includes an electronic control housing 1, a motor housing 2, an electronic control cooling circuit 3 and a motor cooling circuit 4. There are two motor housings 2 and they are symmetrically distributed. One electronic control housing 1 is located in the upper middle part of the two motor housings 2. The electronic control cooling circuit 3 includes a first electronic control cooling circuit and a second electronic control cooling circuit. The motor cooling circuit 4 includes a first motor cooling circuit and a second motor cooling circuit. The first electronic control cooling circuit and the second electronic control cooling circuit are both arranged in the electronic control housing 1. The first motor cooling circuit and the second motor cooling circuit are respectively arranged in the two motor housings 2. The first electronic control cooling circuit is connected to the first motor cooling circuit, and the second electronic control cooling circuit is connected to the second motor cooling circuit.

[0037] like Figure 1 As shown, this embodiment includes two motor housings 2 , a reducer housing 6 is provided in the middle of the two motor housings 2 , and the electronic control housing 1 is located in the upper middle part of the two motor housings 2 and also above the reducer housing 6 .

[0038] like Figure 6 As shown, there are two electronic control cooling circuits 3, arranged symmetrically on both sides; there are two motor cooling circuits 4, also arranged symmetrically on both sides. Both electronic control cooling circuits 3 are located within a single electronic control housing 1, while the two motor cooling circuits 4 are located within two motor housings 2, respectively. The electronic control cooling circuits 3 and motor cooling circuits 4 on the same side are connected.

[0039] Since the electronic control cooling circuit 3 and the motor cooling circuit 4 are both arranged inside the shell, no external pipes are required for connection, making the overall structure compact and occupying little space. It also reduces the heat exchange loss of the external pipes, shortens the path of the cooling circuit, and improves the cooling efficiency.

[0040] In this embodiment, each motor is provided with a motor cooling circuit, and the two motor cooling circuits operate independently, so the cooling efficiency is higher and the cooling effect is better.

[0041] Further, if Figure 6 As shown, a cooling main pipeline 5 is also included. The cooling main pipeline 5 is arranged in the electronic control housing 1 and is communicated with the inlets of the first electronic control cooling circuit and the second electronic control cooling circuit respectively.

[0042] Specifically, Figure 1 and Figure 6 As shown, the cooling main pipeline 5 includes an access pipe 51 and a branch pipe 52. The access pipe 51 is used to connect to an external cooling source. The access pipe 51 is connected to the branch pipe 52, and the branch pipe 52 is respectively connected to the inlet of the first electronically controlled cooling circuit and the second electronically controlled cooling circuit.

[0043] like Figure 1 As shown, the inlet of the access pipe 51 is opened on the outer side of the electronic control housing 1 , and the coolant enters from the access pipe 51 and flows into the branch pipe 52 .

[0044] like Figure 6 As shown, the branch pipe 52 is perpendicular to the access pipe 51 and extends horizontally through the left and right sides of the electronic control housing 1. The middle portion of the branch pipe 52 connects to the access pipe 51, and then connects to the inlets of the first and second electronic control cooling circuits on the left and right sides, respectively. Both ends of the branch pipe 52 extend through the left and right sides of the electronic control housing 1 and are sealed to facilitate drilling of the disassembly pipe 52.

[0045] Further, if Figure 1 As shown, the electronic control housing 1 includes a cover plate 11 and a bottom shell 12 .

[0046] like Figure 5 and Figure 6 As shown, the first electronically controlled cooling circuit and the second electronically controlled cooling circuit both include an input pipe 31, a cooling groove 32 and an output pipe 33. The two input pipes 31 are connected to the branch pipe 52. The input pipe 31 and the output pipe 33 are formed inside the bottom plate of the bottom shell 12. The cooling groove 32 is opened on the inner side surface of the bottom plate, and the two cooling grooves 32 are arranged side by side.

[0047] Specifically, Figure 6 As shown, the inlet pipe 31 is communicated with the branch pipe 52 in a direction perpendicular to the branch pipe 52 .

[0048] like Figure 4 As shown, two input pipes 31 are drilled from the side wall of the bottom shell 12 into the interior of the bottom shell 12. When in use, the outer holes of the input pipes 31 are blocked. This arrangement of the input pipes 31 is also convenient for processing.

[0049] like Figure 5 As shown, the cooling groove 32 is opened on the inner side surface of the bottom plate of the bottom shell 12, and the input pipe 31 is connected to one side of the cooling groove 32. After the coolant flows into the cooling groove 32, it cools the power module inserted into the cooling groove 32, and then flows out from the output pipe 33 connected to the other side of the cooling groove 32. Figure 5The two cooling slots 32 are arranged side by side to cool the two power modules arranged in the electronic control housing 1 respectively. The first electronic control cooling circuit and the second electronic control cooling circuit do not interfere with each other.

[0050] Preferably, a power module is installed in the electric control housing 1 , and a plurality of heat sinks are provided on one side of the power module. The heat sinks are inserted into the cooling grooves 32 , and the power module and the edges of the cooling grooves 32 are sealed by sealing rings.

[0051] To facilitate the representation of connections between cooling circuits, Figure 6 It actually represents the entity of the coolant in the electronic control cooling circuit 3 and the motor cooling circuit 4. Figure 6 The middle cooling slot 32 is actually the shape of the coolant flowing around the plurality of heat sinks in the cooling slot 32 .

[0052] Further, if Figure 5 As shown, a plurality of hexagonal reinforcing ribs 13 are provided on the inner side surface of the bottom plate of the electronic control housing 1 .

[0053] Specifically, Figure 5 As shown, the hexagonal reinforcement ribs 13 are arranged on the upper part, the middle part and between the two cooling grooves 32 of the inner side surface of the bottom plate. The hexagonal reinforcement ribs 13 can improve the rigidity and strength of the electronic control housing 1.

[0054] Further, if Figure 5 As shown, the hexagonal reinforcement ribs 13 and the cooling grooves 32 are connected by the slash reinforcement ribs 14, and the two work together to further improve the rigidity and strength of the electronic control housing 1. Compared with a single honeycomb structure, the process is simpler.

[0055] Further, if Figure 1 As shown, the motor housing 2 includes a first end cover 21, a main housing 22 and a second end cover 23. The main housing 22 is cylindrical. The first end cover 21 is provided on one side of the main housing 22, and the second end cover 23 is provided on the other side of the main housing 22.

[0056] like Figure 6 As shown, the first motor cooling circuit and the second motor cooling circuit both include a liquid inlet 41, a spiral cooling channel 42 and a liquid outlet 43. The liquid inlet 41 is connected to the output pipe 33, the spiral cooling channel 42 is arranged inside the main shell 22, and the liquid inlet 41 and the liquid outlet 43 are arranged on the outer wall of the main shell 22 and are connected to the spiral cooling channel 42.

[0057] Specifically, Figure 3 As shown, the liquid inlet 41 is provided with an opening along the longitudinal direction to enter the main shell 22, the spiral cooling channel 42 surrounds the circumference of the main shell 22 to form multiple circles of continuous channels, and the liquid outlet 43 is provided on the outer wall of the main shell 22, and the liquid outlet 43 is connected to an external coolant recovery device.

[0058] Further, if Figure 2-Figure 4 As shown, the outlet of the output pipe 33 is opened on the bottom surface of the bottom shell 12 , and the liquid inlet 41 is set on the top surface of the main shell 22 .

[0059] Because electronic control housing 1 is positioned above motor housing 2, the outlet of output pipe 33 aligns perfectly with liquid inlet 41. Output pipe 33 and liquid inlet 41 can be connected via threads and sealed with a rubber ring. No external piping is required between electronic control cooling circuit 3 and motor cooling circuit 4. All cooling circuits are located within electronic control housing 1 and motor housing 2, improving cooling efficiency while reducing space requirements.

[0060] The utility model provides a motor cooling circuit for each motor, and the two motor cooling circuits operate independently, resulting in higher cooling efficiency and better cooling effects. Furthermore, the motor cooling circuit and the electronic control cooling circuit are both located within the motor and electronic control housings, eliminating the need for external cooling piping. This results in a compact structure, minimal space consumption, and further improved cooling efficiency.

[0061] The above description is only the principle and preferred embodiment of the present invention. It should be noted that, for those skilled in the art, on the basis of the principle of the present invention, several other variations can be made, which should also be considered as the scope of protection of the present invention.

Claims

1. A cooling system comprising an electric control housing, a motor housing, an electric control cooling circuit and a motor cooling circuit, characterized in that: There are two motor housings and they are symmetrically distributed. One of the electric control housings is located in the upper middle part of the two motor housings. The electric control cooling circuit includes a first electric control cooling circuit and a second electric control cooling circuit. The motor cooling circuit includes a first motor cooling circuit and a second motor cooling circuit. The first electric control cooling circuit and the second electric control cooling circuit are both arranged in the electric control housing. The first motor cooling circuit and the second motor cooling circuit are respectively arranged in the two motor housings. The first electric control cooling circuit is connected to the first motor cooling circuit, and the second electric control cooling circuit is connected to the second motor cooling circuit.

2. The cooling system according to claim 1, characterized in that It also includes a cooling main pipeline, which is arranged in the electronic control housing and is communicated with the inlets of the first electronic control cooling circuit and the second electronic control cooling circuit respectively.

3. The cooling system according to claim 2, characterized in that The main cooling pipeline includes an inlet pipe and a branch pipe. The inlet pipe is used to connect to an external cooling source. The inlet pipe is connected to the branch pipe. The branch pipes are respectively connected to the inlets of the first electronically controlled cooling circuit and the second electronically controlled cooling circuit.

4. The cooling system according to claim 3, characterized in that The electric control housing includes a cover plate and a bottom shell; The first electrically controlled cooling circuit and the second electrically controlled cooling circuit both include an input pipe, a cooling trough, and an output pipe. The two input pipes are connected to the branch pipe. The input pipe and the output pipe are formed inside the bottom plate of the bottom shell. The cooling trough is opened on the inner side surface of the bottom plate, and the two cooling troughs are arranged side by side.

5. The cooling system according to claim 4, characterized in that The inlet of the access pipe is opened on the side of the bottom shell.

6. The cooling system according to claim 4, characterized in that A power module is installed in the electric control housing. A plurality of heat sinks are provided on one side of the power module. The heat sinks are inserted into the cooling grooves. The power module and the edges of the cooling grooves are sealed by sealing rings.

7. The cooling system according to claim 4, characterized in that A plurality of hexagonal reinforcing ribs are provided on the inner side surface of the bottom plate of the electronic control housing.

8. The cooling system according to claim 7, characterized in that The hexagonal reinforcement ribs are connected to the cooling grooves via slash reinforcement ribs.

9. The cooling system according to claim 4, characterized in that The motor housing includes a first end cover, a main shell and a second end cover, the main shell is cylindrical, the first end cover is arranged on one side of the main shell, and the second end cover is arranged on the other side of the main shell; The first motor cooling circuit and the second motor cooling circuit both include a liquid inlet, a spiral cooling channel and a liquid outlet, the liquid inlet is connected to the output pipe, the spiral cooling channel is arranged inside the main shell, and the liquid inlet and the liquid outlet are arranged on the outer wall of the main shell and are connected to the spiral cooling channel.

10. The cooling system according to claim 9, characterized in that The outlet of the output pipe is opened on the bottom surface of the bottom shell, and the liquid inlet is arranged on the top surface of the main shell.

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