Motor controller cooling structure and automobile oil cooling system

Abstract

The application provides a motor controller cooling structure and an automobile oil cooling system, and relates to the technical field of automobile cooling systems.The motor controller cooling structure comprises a shell and a spraying structure.The inside of the shell is used for arranging a boost module.The spraying structure is installed in the shell and is used for being in communication with one end of an external oil line to spray cooling oil onto the boost module.The bottom of the shell is used for being in communication with the other end of the external oil line.The cooling oil can be sprayed onto the boost module, so that the boost module can be quickly cooled.The cooling structure can greatly improve the heat dissipation performance of the motor controller, especially the boost module, and can increase the inductance electric density of the boost module in the moving degree on the basis of meeting the heat dissipation demand of the boost module, while ensuring that the volume of the boost module and the motor controller is not too large, so that the motor controller can be conveniently arranged in the engine compartment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile cooling systems, in particular to a motor controller cooling structure and an automobile oil cooling system. BACKGROUND

[0002] At present, a hybrid electric vehicle contains two motors, i.e., a generator and a driving motor, and a motor controller needs to be arranged for control. In order to match different battery schemes, a boost module is added inside the motor controller to improve the power performance of the vehicle. However, the cooling method of the motor controller is mainly water cooling, and the cooling effect is general. However, the inductance of the boost module generates a large amount of heat. If the boost module is cooled according to the current cooling method, in order to meet the heat dissipation requirement of the boost module, the inductance current density of the boost module needs to be made relatively small, which leads to a relatively large volume of the boost module, and further leads to an increase in the volume of the motor controller, and finally causes the motor controller to be difficult to be arranged in the engine compartment. SUMMARY

[0003] The problem solved by the present application is how to improve the heat dissipation performance of the motor controller, so as to increase the inductance current density of the boost module while meeting the heat dissipation requirement of the boost module, so as to make the volume of the boost module smaller, and further reduce the volume of the motor controller, and facilitate the arrangement of the motor controller in the engine compartment.

[0004] To solve the above problems, the present application provides a motor controller cooling structure, which comprises a shell and a spraying structure. The inside of the shell is used for arranging a boost module. The spraying structure is installed in the shell and is used for communicating with one end of an external oil circuit to spray cooling oil onto the boost module. The bottom of the shell is used for communicating with the other end of the external oil circuit.

[0005] The technical effect of the present application is that the boost module can be arranged inside the shell, the spraying structure is installed in the shell and can be located above, beside or at other positions of the boost module, the spraying structure can communicate with one end of the external oil circuit, so that when the motor controller needs to be cooled, the cooling oil can be sprayed onto the boost module. At this time, the cooling oil can absorb the heat generated by the boost module, and the cooling oil can flow from the bottom of the shell to the external oil circuit to take away the absorbed heat, so that the boost module can be quickly cooled. The above cooling structure can greatly improve the heat dissipation performance of the motor controller, especially the boost module, and further increase the inductance current density of the boost module to a certain extent, while ensuring that the volume of the boost module and the motor controller is not too large, so as to facilitate the arrangement of the motor controller in the engine compartment.

[0006] Preferably, the spraying structure comprises an oil cooling plate and an oil cooling baffle arranged in the casing, and the oil cooling plate and the oil cooling baffle form a cooling oil cavity structure for communicating with the external oil circuit, the oil cooling baffle is located on the side of the oil cooling plate close to the boost module, and the oil cooling baffle is provided with a spraying port.

[0007] Preferably, the oil cooling baffle divides the inner cavity of the casing, the oil cooling baffle and the inner wall of the casing form an oil spraying cavity structure, the boost module is located in the oil spraying cavity structure, and the bottom of the oil spraying cavity structure is used for communicating with the external oil circuit.

[0008] Preferably, the inside of the casing is also used for arranging a plurality of power devices, the oil cooling baffle is provided with a plurality of spraying ports, and each spraying port is arranged one-to-one with the power device and the boost module.

[0009] Preferably, the oil cooling plate divides the inner cavity of the casing, the inside of the casing is also used for arranging a control module, the control module is located on the side of the oil cooling plate away from the oil cooling baffle, the power device is provided with a driving pin, and the driving pin penetrates through the oil cooling plate and the oil cooling baffle to be connected with the control module.

[0010] Preferably, the inside of the casing is provided with a fixing support, and a plurality of power devices and / or the boost module are mounted on the fixing support.

[0011] Preferably, the boost module comprises an inductor winding and an inductor magnetic core, the inductor winding is wound around the inductor magnetic core, the spraying structure is provided with a plurality of spraying ports, and each spraying port is arranged corresponding to the inductor magnetic core and the inductor winding.

[0012] Preferably, the motor controller cooling structure further comprises an oil inlet structure and an oil outlet structure, one end of the oil inlet structure communicates with the spraying structure, the other end of the oil inlet structure is used for communicating with one end of the external oil circuit, one end of the oil outlet structure communicates with the bottom of the casing, and the other end of the oil outlet structure is used for communicating with the other end of the external oil circuit.

[0013] The application also provides an automobile oil cooling system comprising a hybrid box, an oil pump, an oil cooler and the motor controller cooling structure, the hybrid box communicates with the bottom of the casing of the motor controller cooling structure, the spraying structure of the motor controller cooling structure communicates with the oil cooler, the oil cooler communicates with the oil pump, and the oil pump communicates with the hybrid box.

[0014] The automobile oil cooling system has the same beneficial effects as the motor controller cooling structure, which will not be repeated here.

[0015] Preferably, the inside of the motor controller cooling structure is provided with a control module, and the oil pump is electrically connected with the control module. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic diagram of a motor controller cooling structure according to an embodiment of the present application.

[0017] KEY

[0018] 1, housing; 2, spraying structure; 21, oil cooling plate; 22, oil cooling partition; 3, boost module; 31, inductor winding; 32, inductor magnetic core; 4, spraying port; 5, cooling oil cavity structure; 6, oil spraying cavity structure; 7, power device; 8, control module; 9, driving pin; 10, fixing support; 11, oil inlet structure; 12, oil outlet structure; 13, hybrid box; 14, oil pump; 15, oil cooler. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0020] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0021] Referring to Figure 1 FIG. 1, which is a structural schematic diagram of a motor controller cooling structure according to an embodiment of the present application, includes a housing 1 and a spraying structure 2. The inside of the housing 1 is used to set a boost module 3. The spraying structure 2 is installed in the housing 1 and is used to communicate with one end of an external oil line to spray cooling oil onto the boost module 3. The bottom of the housing 1 is used to communicate with the other end of the external oil line.

[0022] Specifically, the motor controller cooling structure can include a housing 1 and a spraying structure 2. The housing 1 can be a sealed cavity structure. The inside of the housing 1 can be used to set a boost module 3, for example, the boost module 3 is installed on the inner bottom wall of the housing 1. The spraying structure 2 can be installed in the inside of the housing 1 and can be located above, beside, etc. of the boost module, preferably, the spraying structure 2 is installed on the inner side wall of the housing 1 and is located directly above the boost module 3.

[0023] The spray structure 2 can be in communication with one end of the external oil circuit, for example, the external oil circuit is a heat exchanger, the spray structure 2 is in communication with one end of the heat exchanger, and the low-temperature cooling oil can flow into the spray structure 2 through the external oil circuit. When the motor controller needs to be cooled, the cooling oil can be sprayed onto the boost module 3, at which time the cooling oil can absorb the heat generated by the boost module 3, and the cooling oil after absorbing the heat can flow from the bottom of the shell 1 to the external oil circuit, taking away the absorbed heat, so that the boost module 3 can be quickly cooled.

[0024] Therefore, the above cooling structure can greatly improve the heat dissipation performance of the motor controller, especially the boost module 3, thereby increasing the inductance density of the boost module 3 to a certain extent. It needs to be explained that the inductance density refers to the winding density around the magnetic core, and at the same time, the volume of the boost module 3 and the motor controller is not too large, so as to facilitate the arrangement of the motor controller in the engine compartment.

[0025] Referring to Figure 1 In some embodiments, the spray structure 2 includes an oil cooling plate 21 and an oil cooling partition plate 22 arranged in the shell 1, and the oil cooling plate 21 and the oil cooling partition plate 22 form a cooling oil cavity structure 5 for communication with the external oil circuit. The oil cooling partition plate 22 is located on the side of the oil cooling plate 21 close to the boost module 3, and the oil cooling partition plate 22 is provided with a spray port 4.

[0026] Specifically, the spray structure 2 can include an oil cooling plate 21 and an oil cooling partition plate 22, both of which are arranged inside the shell 1 and above the boost module 3. In this embodiment, the oil cooling plate 21 and the oil cooling partition plate 22 can be arranged at intervals, and preferably, the oil cooling plate 21 and the oil cooling partition plate 22 are arranged in parallel at intervals. The oil cooling plate 21 and the oil cooling partition plate 22 can form a cooling oil cavity structure 5, which can be in communication with the oil outlet of the external oil circuit, so that the cooling oil of the external oil circuit can flow into the cooling oil cavity structure 5.

[0027] In this embodiment, the oil cooling partition plate 22 can be located on the side of the oil cooling plate 21 close to the boost module 3, and the oil cooling partition plate 22 can be provided with a spray port 4. Preferably, the spray port 4 can be arranged opposite to the boost module 3, that is, the spray port 4 can be located directly above the boost module 3. When the spray port 4 sprays cooling oil, the cooling oil can be sprayed directly onto the boost module 3, which can better cool the boost module 3.

[0028] Referring to Figure 1As shown, in some embodiments, the oil cooling partition plate 22 is arranged to separate the inner cavity of the shell 1, and the oil cooling partition plate 22 and the inner wall of the shell 1 form an oil spraying cavity structure 6, and the boost module 3 is located in the oil spraying cavity structure 6, and the bottom of the oil spraying cavity structure 6 is used to communicate with the external oil circuit.

[0029] Specifically, the oil cooling partition plate 22 can be arranged to separate the inner cavity of the shell 1, that is, the circumferential side of the oil cooling partition plate 22 can be connected with the inner side wall of the shell 1, so that the oil cooling partition plate 22, the inner side wall of the shell 1 and the inner bottom wall of the shell 1 can enclose the oil spraying cavity structure 6, the boost module 3 can be located in the oil spraying cavity structure 6, and the bottom of the oil spraying cavity structure 6 can communicate with the external oil circuit.

[0030] Therefore, when the cooling oil is sprayed from the spray port 4 to the boost module 3, the cooling oil after absorbing heat can flow out from the bottom of the oil spraying cavity structure 6, taking away the heat. By enclosing the oil spraying cavity structure 6 by the oil cooling partition plate 22 and the inner wall of the shell 1, the cooling oil sprayed on the boost module 3 can be concentrated in one area, facilitating the outflow of the cooling oil after collection, and the boost module 3 can also be sprayed with cooling oil more accurately.

[0031] Referring to Figure 1 As shown, in some embodiments, the inside of the shell 1 is also used to arrange a plurality of power devices 7, the oil cooling partition plate 22 is provided with a plurality of spray ports 4, and each spray port 4 is arranged one by one with the power device 7 and the boost module 3.

[0032] Specifically, the inside of the shell 1 can be arranged with a plurality of power devices 7, and in the embodiment, the plurality of power devices 7 can be arranged in the inside of the oil spraying cavity structure 6. The oil cooling partition plate 22 can be provided with a plurality of spray ports 4, and similarly, the plurality of spray ports 4 can also be arranged in an array, and the plurality of spray ports 4 can be arranged one by one with the power device 7 and the boost module 3, that is, one spray port 4 can correspond to one component that needs to be cooled, so that the spray port 4 can be precisely controlled to spray cooling oil to cool the component according to different heat dissipation requirements, so as to achieve the best cooling effect.

[0033] Referring to Figure 1 As shown, in some embodiments, the oil cooling partition plate 22 is arranged to separate the inner cavity of the shell 1, and the inside of the shell 1 is also used to arrange a control module 8, the control module 8 is located on the side of the oil cooling plate 21 away from the oil cooling partition plate 22, the power device 7 is provided with a driving pin 9, and the driving pin 9 penetrates through the oil cooling plate 21 and the oil cooling partition plate 22 to connect with the control module 8.

[0034] Specifically, the oil cooling plate 21 can be arranged to separate the inner cavity of the shell 1, that is, the circumferential side of the oil cooling plate 21 can be connected with the inner side wall of the shell 1, and the inner part of the shell 1 can further be provided with the control module 8. The control module 8 can be located on the side of the oil cooling plate 21 away from the oil cooling baffle 22, and the power device 7 is located on the side of the oil cooling baffle 22 away from the oil cooling plate 21, that is, the power device 7 can be separated from the control module 8. The control module 8 can be arranged away from the heat source, and the temperature of the area where the control module 8 is located can be prevented from being too high.

[0035] More clearly, the control module 8 can be located above the cooling oil cavity structure 5 and the oil injection cavity structure 6, so that the control module 8 can be located above the cooling oil flow path, and the control module 8 can be prevented from being sprayed by the cooling oil. In turn, the control module 8 can avoid the failure of components with poor oil resistance, such as printed circuit boards, caused by oil immersion.

[0036] The power device 7 can be provided with a driving pin 9, one end of the driving pin 9 can be welded with the power device 7, and the driving pin 9 can pass through the oil cooling baffle 22 and the oil cooling plate 21 in sequence, so that the other end of the driving pin 9 can be welded with the control module 8. Thus, part of the driving pin 9 is immersed in the cooling oil, and the opposite ends of the driving pin 9 can respectively transmit the heat of the power device 7 and the control module 8 to the cooling oil. After absorbing heat, the cooling oil can reduce the temperature of the control module 8 and the power device 7, and thus the heat dissipation performance of the motor controller cooling structure can be further improved.

[0037] In the embodiment, the connection between the driving pin 9 and the oil cooling baffle 22 and the oil cooling plate 21 can be sealed by sealing glue, so that the cooling oil can be prevented from leaking from the position where the driving pin 9 is arranged. In other embodiments, the connection between the driving pin 9 and the oil cooling baffle 22 and the oil cooling plate 21 can also be sealed by sealing rings or other sealing forms.

[0038] Referring to Figure 1 In some embodiments, the inner part of the shell 1 is provided with a fixing support 10, and a plurality of power devices 7 and / or boost modules 3 are mounted on the fixing support 10.

[0039] Specifically, the inner part of the oil injection cavity structure 6 of the shell 1 can further be provided with a fixing support 10, the fixing support 10 can be mounted on the inner bottom wall of the shell 1, and a plurality of power devices 7 and / or boost modules 3 can be mounted on the fixing support 10 in a spaced manner. The power devices 7 and the boost modules 3 can be conveniently mounted in the oil injection cavity structure 6, so that the power devices 7 and the boost modules 3 can be more firmly mounted, and the power devices 7 and the boost modules 3 can be raised. This can facilitate the welding of the power devices 7 and the driving pins 9, and can also facilitate the flow of cooling oil from the lower part of the power devices 7 and the boost modules 3.

[0040] Referring to Figure 1 As shown in the drawings, in some embodiments, the boost module 3 comprises an inductor winding 31 and an inductor magnetic core 32, the inductor winding 31 is wound on the inductor magnetic core 32, and the spray structure 2 is provided with a plurality of spray openings 4, and the plurality of spray openings 4 are respectively arranged corresponding to the inductor magnetic core 32 and the inductor winding 31.

[0041] Specifically, the boost module 3 can comprise an inductor winding 31 and an inductor magnetic core 32, the inductor winding 31 can be wound on the inductor magnetic core 32, and the oil-cooled partition plate 22 can be provided with a plurality of spray openings 4, and the plurality of spray openings 4 can be respectively arranged corresponding to the inductor winding 31 and the inductor magnetic core 32. In this embodiment, the oil-cooled partition plate 22 can be provided with three spray openings 4, and the three spray openings 4 can be respectively arranged corresponding to the opposite ends of the inductor magnetic core 32 and the inductor winding 31, so that the boost module 3 can be uniformly cooled, and the cooling oil can be fully sprayed onto the boost module 3, further improving the heat dissipation performance of the motor controller cooling structure.

[0042] Referring to Figure 1 As shown in the drawings, in some embodiments, the motor controller cooling structure further comprises an oil inlet structure 11 and an oil outlet structure 12, one end of the oil inlet structure 11 is in communication with the spray structure 2, the other end of the oil inlet structure 11 is used to communicate with one end of the external oil circuit, one end of the oil outlet structure 12 is in communication with the bottom of the shell 1, and the other end of the oil outlet structure 12 is used to communicate with the other end of the external oil circuit.

[0043] Specifically, the motor controller cooling structure can further comprise an oil inlet structure 11 and an oil outlet structure 12, preferably, the oil inlet structure 11 and the oil outlet structure 12 are respectively pipeline structures. The oil inlet structure 11 can be inserted into the shell 1, and one end of the oil inlet structure 11 can be in communication with the spray structure 2, and the other end of the oil inlet structure 11 can be in communication with one end of the external oil circuit, so that the cooling oil can flow into the spray structure 2 through the oil inlet structure 11, which can facilitate the cooling oil to flow into the spray structure 2.

[0044] Similarly, the oil outlet structure 12 can also be inserted into the bottom of the shell 1, more specifically, one end of the oil outlet structure 12 can be in communication with the bottom of the shell 1, and the other end of the oil outlet structure 12 can be in communication with the other end of the external oil circuit, so that the cooling oil sprayed onto the boost module 3 can be collected at the bottom of the shell 1 after absorbing heat, and then flow out of the shell 1 through the oil outlet structure 12 and into the external oil circuit, and the cooling oil absorbing heat can be heat-exchanged in the external oil circuit, and then flow into the spray structure 2 again through the oil inlet structure 11 to cool the boost module 3, so that the cooling of the boost module 3 can be circulated, further improving the heat dissipation performance of the motor controller cooling structure.

[0045] Referring to Figure 1 As shown in FIG. 13, the automobile oil cooling system according to another embodiment of the present application comprises a hybrid box 13, an oil pump 14, an oil cooler 15 and the motor controller cooling structure as described above, the bottom of the shell 1 of the motor controller cooling structure is communicated with the oil inlet of the hybrid box 13, the spraying structure 2 of the motor controller cooling structure is communicated with the oil outlet of the oil cooler 15, the oil inlet of the oil cooler 15 is communicated with the oil outlet of the oil pump 14, and the oil inlet of the oil pump 14 is communicated with the oil outlet of the hybrid box 13.

[0046] Specifically, the automobile oil cooling system can comprise the hybrid box 13, the oil pump 14, the oil cooler 15 and the motor controller cooling structure as described above, in the embodiment, the oil inlet of the hybrid box 13 can be communicated with the bottom of the shell 1 of the motor controller cooling structure, the spraying structure 2 of the motor controller cooling structure can be communicated with the oil outlet of the oil cooler 15, the oil inlet of the oil cooler 15 can be communicated with the oil outlet of the oil pump 14, and the oil inlet of the oil pump 14 can be communicated with the oil outlet of the hybrid box 13.

[0047] In other embodiments, the oil outlet of the hybrid box 13 can be communicated with the spraying structure 2 of the motor controller cooling structure, and the bottom of the shell 1 of the motor controller cooling structure can be communicated with the oil inlet of the hybrid box 13. Thus, the hybrid box 13, the oil pump 14, the oil cooler 15 and the motor controller cooling structure can form a complete cooling oil circuit, so that the cooling oil can circulate and flow in the automobile oil cooling system for cooling.

[0048] The automobile oil cooling system in the embodiment and the motor controller cooling structure as described above are based on the same inventive concept, have the same or similar embodiments and beneficial effects, and thus will not be described here.

[0049] Referring to Figure 1 As shown in FIG. 14, in some embodiments, a control module 8 is arranged in the interior of the motor controller cooling structure, and the oil pump 14 is electrically connected with the control module 8.

[0050] Specifically, the control module 8 can be arranged in the interior of the motor controller cooling structure, and the oil pump 14 can be electrically connected with the control module 8. Preferably, the control module 8 and the oil pump 14 are connected through wires, the control module 8 can control the rotating speed of the oil pump 14, so that the flow of the cooling oil pumped into the motor controller cooling structure can be precisely controlled through the control of the oil pump 14, and thus the cooling effect can be more precisely controlled.

[0051] Although the present application is disclosed as above, the protection scope of the present application is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, and these changes and modifications shall fall within the protection scope of the present application.

Claims

1. A cooling structure for a motor controller, characterized in that, Includes a housing (1) and a spray structure (2). The interior of the housing (1) is used to house a booster module (3). The spray structure (2) is installed inside the housing (1) and is used to connect to one end of an external oil circuit to spray cooling oil onto the booster module (3). The bottom of the housing (1) is used to connect to the other end of the external oil circuit. The spray structure (2) includes an oil cooling plate (21) and an oil cooling baffle (22) spaced apart within the housing (1), and the oil cooling plate (21) and the oil cooling baffle (22) form a cooling oil cavity structure (5), which is used to communicate with the external oil circuit, and the oil cooling baffle (22) is located on the side of the oil cooling plate (21) closer to the boost module (3); The housing (1) is further provided with multiple power devices (7) and a control module (8). The oil cooling plate (21) is arranged to separate the inner cavity of the housing (1). The control module (8) is located on the side of the oil cooling plate (21) facing away from the oil cooling partition (22). The power devices (7) are located on the side of the oil cooling partition (22) facing away from the oil cooling plate (21). The power devices (7) are provided with drive pins (9). The drive pins (9) pass through the oil cooling plate (21) and the oil cooling partition (22) to connect with the control module (8). The connection between the drive pins (9) and the oil cooling partition (22) and the oil cooling plate (21) is provided with sealant or sealing ring.

2. The motor controller cooling structure according to claim 1, characterized in that, The oil cooling baffle (22) is provided with a spray nozzle (4).

3. The motor controller cooling structure according to claim 2, characterized in that, The oil cooling baffle (22) is provided to separate the inner cavity of the housing (1). The oil cooling baffle (22) and the inner wall of the housing (1) form an oil injection cavity structure (6). The boost module (3) is located inside the oil injection cavity structure (6). The bottom of the oil injection cavity structure (6) is used to communicate with the external oil circuit.

4. The motor controller cooling structure according to claim 2, characterized in that, The oil cooling baffle (22) is provided with a plurality of spray nozzles (4), and each spray nozzle (4) is respectively configured to correspond one-to-one with the power device (7) and the boost module (3).

5. The motor controller cooling structure according to claim 4, characterized in that, The housing (1) is provided with a fixed bracket (10) inside, and multiple power devices (7) and / or the boost module (3) are mounted on the fixed bracket (10).

6. The motor controller cooling structure according to claim 1, characterized in that, The boost module (3) includes an inductor winding (31) and an inductor core (32). The inductor winding (31) is wrapped around the inductor core (32). The spray structure (2) is provided with a plurality of spray nozzles (4). The plurality of spray nozzles (4) are respectively provided corresponding to the inductor core (32) and the inductor winding (31).

7. The motor controller cooling structure according to claim 1, characterized in that, It also includes an oil inlet structure (11) and an oil outlet structure (12). One end of the oil inlet structure (11) is connected to the spray structure (2), and the other end of the oil inlet structure (11) is connected to one end of the external oil circuit. One end of the oil outlet structure (12) is connected to the bottom of the housing (1), and the other end of the oil outlet structure (12) is connected to the other end of the external oil circuit.

8. An automotive oil cooling system, characterized in that, The device includes a hybrid housing (13), an oil pump (14), an oil cooler (15), and a motor controller cooling structure as described in any one of claims 1-7. The hybrid housing (13) is connected to the bottom of the housing (1) of the motor controller cooling structure. The spray structure (2) of the motor controller cooling structure is connected to the oil cooler (15). The oil cooler (15) is connected to the oil pump (14). The oil pump (14) is connected to the hybrid housing (13).

9. The automotive oil cooling system according to claim 8, characterized in that, The motor controller cooling structure is equipped with a control module (8), and the oil pump (14) is electrically connected to the control module (8).

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