Motor thermal management system, control method thereof and vehicle

Abstract

The embodiment of the invention discloses a motor thermal management system, a control method thereof and a vehicle. The motor heat management system comprises a power module, a heat exchanger and a heater which are arranged in the motor, and the power module and the heater are connected in series to form a first motor internal loop; the power module, the heat exchanger and the heater are connected in series to form a second motor internal loop; wherein the power module comprises a stator, a rotor and a speed reducer gear box which are connected in parallel to an internal loop of the first motor and an internal loop of the second motor. According to the motor thermal management system, the control method thereof and the vehicle, the endurance mileage can be increased in a low-temperature environment.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a motor thermal management system, a control method thereof, and a vehicle. Background Art

[0002] At present, for oil-cooled motors, the lubricating oil of the reducer gearbox and the cooling oil of the motor are usually the same medium. Due to the physical properties of the lubricating oil, its viscosity will increase in low temperature environments, which will bring additional oil stirring resistance to the reducer gearbox and additional load to the motor. At this time, more electrical energy is needed to overcome the load, resulting in a decrease in cruising range in low temperature environments. Summary of the invention

[0003] In order to solve the above technical problems, the embodiments of the present application provide a motor thermal management system and a control method thereof and a vehicle, which can improve the cruising range in a low temperature environment.

[0004] According to one aspect of an embodiment of the present application, a motor thermal management system is provided, which includes a power module, a heat exchanger and a heater arranged in the motor, the power module and the heater are connected in series to form a first motor internal loop; the power module, the heat exchanger and the heater are connected in series to form a second motor internal loop; wherein the power module includes a stator, a rotor and a reducer gear box connected in parallel to the first motor internal loop and the second motor internal loop.

[0005] In an exemplary embodiment of the present application, the heater includes a tube body and a heating plate disposed in the tube body; the heating plate is in a spiral structure.

[0006] In an exemplary embodiment of the present application, the motor thermal management system also includes a controller component and a bypass pipe, the controller component is electrically connected to the heat exchanger and the heater; the controller component and the heat exchanger are connected in series to form an external circuit of the motor; one end of the bypass pipe is connected to the pipeline between the controller component and the heat exchanger, and the other end is connected to the outside of the external circuit of the motor.

[0007] According to another aspect of an embodiment of the present application, a vehicle is provided, including a vehicle body and the above-mentioned motor thermal management system, wherein the motor thermal management system is connected to the vehicle body.

[0008] According to another aspect of an embodiment of the present application, a control method for a motor thermal management system is provided, the method comprising: acquiring temperature information of the motor; and controlling a heater to start and stop based on the temperature information.

[0009] In an exemplary embodiment of the present application, the temperature information includes the ambient temperature value of the motor and the temperature value of the first flow medium in the internal circuit of the first motor or the internal circuit of the second motor. The method for controlling the heater to start and stop based on the temperature information includes: if the ambient temperature value is greater than the ambient temperature threshold, the first flow medium is controlled to circulate in the internal circuit of the second motor, and the heater is controlled to stop heating; and\or, if the temperature value of the first flow medium is greater than the first cooling temperature threshold, the first flow medium is controlled to circulate in the internal circuit of the second motor, and the heater is controlled to stop heating.

[0010] In an exemplary embodiment of the present application, the method further includes: if the ambient temperature value is not greater than the ambient temperature threshold and the temperature value of the first flow medium is not greater than the first cooling temperature threshold, controlling the first flow medium to circulate in the internal loop of the first motor.

[0011] In an exemplary embodiment of the present application, the method further includes: if the temperature value of the first flow medium is less than a second cooling temperature threshold, controlling the heater to start heating; wherein the second cooling temperature threshold is less than the first cooling temperature threshold.

[0012] In an exemplary embodiment of the present application, the temperature information includes the ambient temperature value of the motor and the temperature value of the second flow medium in the external circuit of the motor. The method for controlling the start and stop of the heater based on the temperature information includes: if the ambient temperature value is greater than the ambient temperature threshold; and\or, the temperature value of the second flow medium is greater than the third cooling temperature threshold, then controlling the second flow medium to circulate in the external circuit of the motor, and controlling the heater to stop heating.

[0013] In an exemplary embodiment of the present application, the method further includes: if the ambient temperature value is not greater than the ambient temperature threshold, and the temperature value of the second flow medium is not greater than the third cooling temperature threshold, controlling the second flow medium to flow to the outside of the motor external circuit through a bypass pipe before flowing through the heat exchanger.

[0014] In the technical solution provided in the embodiments of the present application, a heater is provided in the motor, so that the first flow medium in the motor can be heated in a low-temperature environment, so that the temperature of the first flow medium can be quickly increased, the viscosity of the first flow medium can be reduced, and its fluidity can be increased, thereby reducing the oil stirring loss of the reducer gearbox of the power module, reducing the motor load, and improving low-temperature endurance. At the same time, a first motor internal circuit that is not connected to the heat exchanger is added inside the motor, so that the motor can control the first flow medium to circulate in the first motor internal circuit in a low-temperature environment, and no longer flow to the heat exchanger, and thus not connect with the external cooling circuit, which can reduce the heat exchange capacity between the first flow medium and the outside and improve the overall temperature of the motor. Therefore, the motor thermal management system can improve the cruising range in a low-temperature environment.

[0015] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 It is a schematic diagram of the flow path of the first flow medium inside the motor at low temperature of the motor thermal management system shown in an exemplary embodiment of the present application.

[0018] Figure 2 It is a schematic diagram of the flow path of the first flow medium inside the motor at high temperature of the motor thermal management system shown in an exemplary embodiment of the present application.

[0019] Figure 3 It is a schematic diagram of the flow path of the first flow medium inside the motor at high temperature of the motor thermal management system shown in an exemplary embodiment of the present application.

[0020] Figure 4 It is a schematic diagram of the flow path of the first flow medium inside the motor at low temperature of the motor thermal management system shown in an exemplary embodiment of the present application.

[0021] Figure 5 It is a structural schematic diagram of a heater shown in an exemplary embodiment of the present application.

[0022] Figure 6 It is a control logic diagram of a control method of a motor thermal management system shown in an exemplary embodiment of the present application.

[0023] Figure 7 is a block diagram of a control device of a motor thermal management system shown in an exemplary embodiment of the present application.

[0024] Figure 8 A schematic diagram of the structure of a computer system suitable for implementing an electronic device of an embodiment of the present application is shown. DETAILED DESCRIPTION

[0025] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0026] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0027] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0028] The term "multiple" as used in this application refers to two or more than two. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0029] At present, in the field of electric vehicle technology, due to the output characteristics of the motor, most automotive motors use reducers to change the motor output characteristics. In order to improve the working environment of the reducer, lubricating oil is usually added to the reducer gearbox as a lubricating medium. Among them, for oil-cooled motors, the lubricating oil of the reducer gearbox and the cooling oil of the motor are usually the same medium. Due to the physical properties of the lubricating oil, its viscosity will increase in low temperature environments, which will bring additional oil stirring resistance to the reducer and additional load to the motor. At this time, more electrical energy needs to be provided to overcome the load, resulting in a decrease in cruising range in low temperature environments.

[0030] In addition, the test results show that the drag resistance of the reducer with different temperatures at the same speed is increased by about 25N when the lubricating oil temperature is 0℃ compared with that of the lubricating oil temperature of 25℃. Based on the -7℃ endurance test data of a certain model under the CLTC-P working condition, the lubricating oil temperature is always between 5 and 10℃ during the test. The lower lubricating oil temperature will increase the resistance of the transmission system. After evaluation, raising the lubricating oil temperature to 25℃ can optimize the low-temperature endurance by 15km to 19km.

[0031] It can be seen that increasing the temperature of the lubricating oil can improve the vehicle's low-temperature cruising range.

[0032] Based on this, combined Figures 1 to 8 As shown, this embodiment provides a motor thermal management system for improving the low-temperature cruising range of a vehicle.

[0033] Figure 1 FIG. 1 is a schematic diagram of the flow path of the first flow medium inside the motor at low temperature of the motor thermal management system according to an exemplary embodiment of the present application. Figure 1 As shown, the motor thermal management system includes a power module 13, a heat exchanger 12 and a heater 11 arranged in the motor, the power module 13 and the heater 11 are connected in series to form a first motor internal loop; the power module 13, the heat exchanger 12 and the heater 11 are connected in series to form a second motor internal loop. Among them, the power module 13 includes a stator 131, a rotor 132 and a reducer gearbox 133 connected in parallel to the first motor internal loop and the second motor internal loop. In this embodiment, the first flow medium (lubricating oil or cooling oil) can circulate in the first motor internal loop or the second motor internal loop. In addition, no matter when the first flow medium circulates in the first motor internal loop or the second motor internal loop and flows to the power module 13, it will pass through the stator 131, the rotor 132 and the reducer gearbox 133. Among them, when the first flow medium passes through the stator 131 and the rotor 132, it plays the role of cooling oil, and when the first flow medium passes through the reducer gearbox 133, it plays the role of lubricating oil.

[0034] For example, a first valve a is set on the pipeline between the heater 11 and the heat exchanger 12. The first valve a is a three-way valve. Two valve ports in the three-way valve are used to connect the heater 11 and the heat exchanger 12 to form a second motor internal loop. The other valve port in the three-way valve directly connects the heater 11 and the power module 13 through the pipeline to form a first motor internal loop.

[0035] It should be understood that the difference between the first motor internal loop and the second motor internal loop is that in the first motor internal loop, the first flow medium does not pass through the heat exchanger 12 , while in the second motor internal loop, the first flow medium passes through the heat exchanger 12 .

[0036] In the present invention, by arranging a heater 11 in the motor, the first flow medium in the motor can be heated in a low-temperature environment, so that the temperature of the first flow medium can be quickly increased, the viscosity of the first flow medium can be reduced, and its fluidity can be increased, thereby reducing the oil stirring loss of the reducer gearbox 133 of the power module 13, reducing the motor load, and improving low-temperature endurance. At the same time, a first motor internal circuit that is not connected to the heat exchanger 12 is added inside the motor, so that the motor can control the first flow medium to circulate in the first motor internal circuit in a low-temperature environment, and no longer flow to the heat exchanger 12, and thus not connect to the external cooling circuit, which can reduce the heat exchange capacity between the first flow medium and the outside and improve the overall temperature of the motor. Therefore, the motor thermal management system can improve the cruising range in a low-temperature environment.

[0037] Figure 5 FIG. 1 is a schematic diagram of the structure of a heater 11 according to an exemplary embodiment of the present application. Figure 5 As shown, the heater 11 includes a tube body 111 and a heating plate 112 disposed in the tube body 111; the heating plate 112 has a spiral structure. In this embodiment, the tube body 111 is a hollow tubular body connected to the internal circuit of the first motor and the internal circuit of the second motor. The heating plate 112 with a spiral structure is disposed in the middle of the tube body 111. The heating plate 112 with a spiral structure can increase the contact surface with the first flow medium to improve the heating efficiency. One side of the tube body 111 is a power line, and the power line is extended to the heater controller 15.

[0038] Of course, in other embodiments, the heating plate 112 may also be in other shapes.

[0039] It should be understood that, compared to the prior art, which increases the temperature of the first fluid medium by friction work of the gears in the gearbox, the present invention heats the first fluid medium by setting a heater 11 in the motor, which can further increase the temperature of the first fluid medium in the reducer gearbox 133 when the vehicle is at low speed, small load and extremely low temperature, and avoid the situation where the first fluid medium is in a passive temperature increase and cannot be actively controlled. And compared to the prior art, which generates heat by using the motor stall, which makes it impossible for the vehicle to heat the first fluid medium during driving, the present invention heats the first fluid medium by setting a heater 11 in the motor, which can achieve heating of the first fluid medium in both parking and driving situations.

[0040] Combination Figures 1 to 4As shown, the motor thermal management system further includes an oil pump 22, a filter 21, a temperature sensor 19 and an oil pan 18 connected in series to the first motor internal circuit and the second motor internal circuit. In this embodiment, the first flow medium flowing out of the power module 13 will flow through the oil pan 18, the temperature sensor 19, the filter 21 and the oil pump 22 in sequence, and then flow into the heater 11.

[0041] The motor thermal management system further includes a controller assembly and a bypass pipe 17, and the controller assembly is electrically connected to the heat exchanger 12 and the heater 11. In this embodiment, the controller assembly includes an oil pump controller 14, a heater controller 15, and a motor controller 16, the oil pump controller 14 is electrically connected to the oil pump 22, the heater controller 15 is electrically connected to the heater 11, and the motor controller 16 is electrically connected to the heat exchanger 12.

[0042] Furthermore, the controller assembly is connected in series with the heat exchanger 12 to form an external circuit of the motor; that is, the oil pump controller 14, the heater controller 15, the motor controller 16 and the heat exchanger 12 are connected in series to form an external circuit of the motor.

[0043] Furthermore, one end of the bypass pipe 17 is connected to the pipeline between the motor controller 16 and the heat exchanger 12, and the other end is connected to the outside of the motor external circuit.

[0044] For example, the pipeline between the motor controller 16 and the heat exchanger 12 is provided with a second valve b, and the second valve b is a three-way valve, two of the three valve ports in the three-way valve are connected between the motor controller 16 and the heat exchanger 12, and the other valve port in the three-way valve is connected to the bypass pipeline 17, and is connected to the external circuit of the motor through the bypass pipeline 17.

[0045] It should be understood that a bypass pipe 17 is added to the outside of the motor, and then in a low temperature environment, the second flow medium can be controlled to flow out of the external circuit of the motor through the bypass pipe 17 and no longer flow to the heat exchanger 12, so that the motor cooling circuit is not connected to the heat exchanger 12, which can reduce the heat exchange capacity between the motor and the outside and increase the overall temperature of the motor. Specifically: at high temperatures, the second flow medium flows into the oil pump controller 14, the heater controller 15, and the motor controller 16 to take away the heat of the controller, and then flows to the heat exchanger 12 through the second valve b to exchange heat with the lubricating oil and take away the heat. At low temperatures, the second flow medium flows into the oil pump controller 14, the heating controller, and the motor controller 16 and then flows out directly through the second valve b. Among them, the second flow medium is a coolant.

[0046] In summary, combined Figures 1 to 4As shown, the motor thermal management system of the present application can heat the first flow medium in the motor in a low-temperature environment by setting a heater 11 in the motor, so that the temperature of the first flow medium can be quickly increased, the viscosity of the first flow medium can be reduced, and its fluidity can be increased, thereby reducing the oil stirring loss of the reducer gearbox 133 of the power module 13, reducing the motor load, and improving low-temperature endurance. At the same time, a first motor internal loop that is not connected to the heat exchanger 12 is added inside the motor, so that the motor can control the first flow medium to circulate in the first motor internal loop in a low-temperature environment, and no longer flow to the heat exchanger 12, and then not connect to the external cooling loop, which can reduce the heat exchange capacity between the first flow medium and the outside and increase the overall temperature of the motor.

[0047] In addition, by adding a bypass pipe 17 outside the motor, the second flow medium can be controlled to flow out of the external circuit of the motor through the bypass pipe 17 in a low temperature environment and no longer flow to the heat exchanger 12, so that the motor cooling circuit is not connected to the heat exchanger 12, which can reduce the heat exchange capacity between the motor and the outside and increase the overall temperature of the motor.

[0048] Therefore, the motor thermal management system can improve the driving range in low temperature environments.

[0049] The present application also provides a vehicle, which includes a vehicle body and the motor thermal management system in the above embodiment, wherein the motor thermal management system is connected to the vehicle body to improve the vehicle's cruising range in a low temperature environment.

[0050] Combination Figures 1 to 6 As shown, the present application also provides a control method of a motor thermal management system, which is used to control the motor thermal management system in the above embodiment. The implementation environment of the control method of the motor thermal management system at least includes a terminal, which is used to receive the temperature information collected by the temperature sensor 19 in the motor thermal management system, and control the opening and closing of the first valve a, the opening and closing of the second valve b, and the switch of the heater 11 according to the temperature information. In this embodiment, the terminal is a vehicle-mounted terminal.

[0051] The method proposed in the embodiment of the present application will be described in detail below using the terminal as an exemplary execution subject. In an exemplary embodiment, the method includes steps S210 to S220, which are described in detail as follows:

[0052] Step S210: Acquire the temperature information of the motor.

[0053] In an exemplary embodiment of the present application, the temperature information of the motor can be obtained by a temperature sensor 19 arranged in the motor, wherein the temperature information includes the ambient temperature value of the motor, the temperature value of the first flow medium in the first motor internal loop or the second motor internal loop, and the temperature value of the second flow medium in the motor external loop.

[0054] Step S220: Control the heater 11 to start and stop based on the temperature information.

[0055] In an exemplary embodiment of the present application, if the ambient temperature value is greater than the ambient temperature threshold, the first flow medium is controlled to circulate in the internal loop of the second motor, and the heater 11 is controlled to stop heating; and\or, if the temperature value of the first flow medium is greater than the first cooling temperature threshold, the first flow medium is controlled to circulate in the internal loop of the second motor, and the heater 11 is controlled to stop heating.

[0056] For example, combining Figure 2 As shown, the ambient temperature threshold is 10°C, and the first cooling temperature threshold is 70°C. When the ambient temperature value is greater than 10°C, the first valve a is controlled to open the channel between the heater 11 and the heat exchanger 12, and the channel from the heater 11 to the power module 13 is closed, and the heater 11 is controlled to stop heating; when the temperature value of the first flow medium is greater than 70°C, the first valve a is also controlled to open the channel between the heater 11 and the heat exchanger 12, and the channel from the heater 11 to the power module 13 is closed, so that the first flow medium circulates in the internal loop of the second motor, and the heater 11 is controlled to stop heating.

[0057] It should be understood that when the ambient temperature value and the temperature value of the first flow medium are high (greater than the corresponding ambient temperature threshold or the first cooling temperature threshold), the first valve a is opened to connect the valve port between the heater 11 and the heat exchanger 12, so that the first flow medium flows to the heat exchanger 12 for heat exchange and cooling. At this time, there is no need to open the heater 11 to heat the first flow medium.

[0058] In an exemplary embodiment of the present application, if the ambient temperature value is not greater than the ambient temperature threshold and the temperature value of the first flow medium is not greater than the first cooling temperature threshold, the first flow medium is controlled to circulate in the internal loop of the first motor.

[0059] For example, combining Figure 1As shown, the ambient temperature threshold is 10°C and the first cooling temperature threshold is 70°C. When the ambient temperature value is less than or equal to 10°C, the first valve a is controlled to open the channel between the heater 11 and the power module 13, and close the channel from the heater 11 to the heat exchanger 12; when the temperature value of the first flow medium is less than or equal to 70°C, the first valve a is also controlled to open the channel between the heater 11 and the power module 13, and close the channel from the heater 11 to the heat exchanger 12, so that the first flow medium circulates in the internal loop of the first motor.

[0060] It should be understood that when the ambient temperature value and the temperature value of the first flow medium are low (lower than the corresponding ambient temperature threshold or the first cooling temperature threshold), the first valve a is opened to connect the valve port between the heater 11 and the power module 13, so that the first flow medium flows directly to the power module 13 without exchanging heat with the external environment.

[0061] In an exemplary embodiment of the present application, if the temperature value of the first flow medium is less than the second cooling temperature threshold, the heater 11 is controlled to start heating to further heat the first flow medium; wherein the second cooling temperature threshold is less than the first cooling temperature threshold. If the temperature value of the first flow medium is greater than the second cooling temperature threshold and less than the first cooling temperature threshold, the heater 11 is controlled to stop heating.

[0062] For example, the second cooling temperature threshold is 25°C.

[0063] In an exemplary embodiment of the present application, if the ambient temperature value is greater than the ambient temperature threshold; or the temperature value of the second flow medium is greater than the third cooling temperature threshold, the second flow medium is controlled to circulate in the external circuit of the motor, and the heater 11 is controlled to stop heating.

[0064] For example, combining Figure 3 As shown, the ambient temperature threshold is 10°C and the third cooling temperature threshold is 70°C. When the ambient temperature value is greater than 10°C, the second valve b is controlled to open the channel between the motor controller 16 and the heat exchanger 12; when the temperature value of the first flow medium is greater than 70°C, the three-way valve is also controlled to open the channel between the motor controller 16 and the heat exchanger 12, so that the second flow medium circulates in the motor external loop, and the heater 11 is controlled to stop heating.

[0065] In an exemplary embodiment of the present application, in combination Figure 4 As shown, if the ambient temperature value is not greater than the ambient temperature threshold and the temperature value of the second flow medium is not greater than the third cooling temperature threshold, the second flow medium is controlled to flow to the outside of the motor external circuit through the bypass pipe 17 before flowing through the heat exchanger 12.

[0066] It should be understood that if the ambient temperature value is not greater than the ambient temperature threshold, and the temperature value of the second flow medium is not greater than the third cooling temperature threshold, it means that the temperature of the second flow medium is relatively low at this time, and the vehicle is in a low temperature environment. In this case, the second flow medium is controlled to flow to the outside of the motor external circuit through the bypass pipe 17 before flowing through the heat exchanger 12, so as to avoid heat exchange between the second flow medium and the heat exchanger 12.

[0067] In summary, combined Figures 1 to 6 As shown, after obtaining the ambient temperature value of the motor and the temperature value of the first flow medium in the first motor internal circuit or the second motor internal circuit, the motor thermal management system of the present application controls the first flow medium to flow to the heat exchanger 12, and the heater 11 does not work if at least one of the ambient temperature value and the temperature value of the first flow medium is greater than the corresponding ambient temperature threshold and the first cooling temperature threshold; if both the ambient temperature value and the temperature value of the first flow medium are less than the corresponding ambient temperature threshold and the first cooling temperature threshold of the first flow medium, the first flow medium is controlled not to flow to the heat exchanger 12, thereby reducing the heat loss of the first flow medium in heat exchange with the outside world, and when the temperature value of the first flow medium is less than the second cooling temperature threshold, the heater 11 starts to work to heat the first flow medium, thereby increasing the overall temperature of the motor.

[0068] In addition, if at least one of the ambient temperature value and the temperature value of the first flow medium is greater than the corresponding ambient temperature threshold and the third cooling temperature threshold, the second flow medium is controlled to circulate in the motor external circuit to exchange heat through the heat exchanger 12, and the heater 11 is controlled to stop heating. If both the ambient temperature value and the temperature value of the first flow medium are less than the corresponding ambient temperature threshold and the third cooling temperature threshold, the second flow medium is controlled to flow to the outside of the motor external circuit through the bypass pipe 17 before flowing through the heat exchanger 12, thereby reducing the heat exchange between the second flow medium and the external environment. Therefore, the motor thermal management system can improve the cruising range in low temperature environments.

[0069] Figure 7 FIG. 3 is a schematic diagram showing a structure of a control device 300 of a motor thermal management system provided in an embodiment of the present application. Figure 7 As shown, in this embodiment, a control device 300 of a motor thermal management system is also provided, which is used to execute the control method of the motor thermal management system in the above embodiment.

[0070] Furthermore, the control device 300 of the motor thermal management system includes: an acquisition module 310, which is used to acquire temperature information of the motor.

[0071] Furthermore, the control device 300 of the motor thermal management system also includes a control module 320 for controlling the heater 11 to start and stop based on the temperature information.

[0072] It should be noted that the control device 300 of the motor thermal management system provided in the above embodiment and the control method of the motor thermal management system provided in the above embodiment belong to the same concept, and the specific way in which each module and unit performs operations has been described in detail in the method embodiment and will not be repeated here.

[0073] Another aspect of the present application provides an electronic device, including: a controller; a memory for storing one or more programs, when the one or more programs are executed by the controller, to execute the above-mentioned control method of the motor thermal management system.

[0074] The present application also provides a computer-readable storage medium on which computer-readable instructions are stored. When the computer-readable instructions are executed by a processor of a computer, the computer executes the control method of the motor thermal management system described above.

[0075] See also Figure 8 , Figure 8 1 is a schematic diagram of the structure of the computer system of the electronic device of the embodiment of the present application. It shows a schematic diagram of the structure of the computer system of the electronic device suitable for implementing the embodiment of the present application.

[0076] It should be noted that Figure 8 The computer system 400 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0077] like Figure 8As shown, the computer system 400 includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 402 or the program loaded from the storage part 408 to the random access memory (RAM) 403, such as executing the method in the above embodiment. In the RAM 403, various programs and data required for system operation are also stored. The CPU 401, ROM 402 and RAM 403 are connected to each other through a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404. The following components are connected to the I / O interface 405: an input section 406 including a keyboard, a mouse, etc.; an output section 407 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage section 408 including a hard disk, etc.; and a communication section 409 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to the I / O interface 405 as needed. A removable medium 411, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 410 as needed so that a computer program read therefrom is installed into the storage section 408 as needed.

[0078] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 409, and / or installed from a removable medium 411. When the computer program is executed by a central processing unit (CPU) 401, various functions defined in the system of the present application are executed.

[0079] It should be noted that the computer-readable medium shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as a part of a carrier wave, wherein a computer-readable computer program is carried. This propagated data signal can take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program used by or in combination with an instruction execution system, device, or device. The computer program contained on the computer-readable medium can be transmitted by any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above. The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions, and operations of the systems, methods, and computer program products according to various embodiments of the present application. Among them, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above module, program segment, or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each block in the block diagrams or flowcharts, and combinations of blocks in the block diagrams or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0080] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not, in some cases, constitute limitations on the units themselves.

[0081] Another aspect of the present application further provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the control method of the motor thermal management system as described above is implemented. The computer-readable storage medium may be included in the electronic device described in the above embodiment, or may exist independently without being assembled into the electronic device.

[0082] Another aspect of the present application also provides a computer program product or a computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the control method of the motor thermal management system provided in each of the above embodiments.

[0083] According to one aspect of an embodiment of the present application, a computer system is also provided, including a central processing unit (CPU), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) or a program loaded from a storage portion into a random access memory (RAM), such as executing the method in the above embodiment. In RAM, various programs and data required for system operation are also stored. CPU, ROM and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0084] The following components are connected to the I / O interface: an input part including a keyboard, a mouse, etc.; an output part including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage part including a hard disk, etc.; and a communication part including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication part performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface as needed. Removable media, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., are installed on the drive as needed so that the computer program read therefrom is installed into the storage part as needed.

[0085] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation scheme of the present application. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection required by the claims.

Claims

1. A motor thermal management system, characterized in that: The motor thermal management system comprises a power module, a heat exchanger and a heater arranged in the motor, wherein the power module and the heater are connected in series to form a first motor internal loop; the power module, the heat exchanger and the heater are connected in series to form a second motor internal loop; The power module includes a stator, a rotor and a reducer gearbox connected in parallel to the internal circuit of the first motor and the internal circuit of the second motor.

2. The motor thermal management system according to claim 1, characterized in that: The heater comprises a tube body and a heating plate arranged in the tube body; The heating plate is in a spiral structure.

3. The motor thermal management system according to claim 1, characterized in that: The motor thermal management system further comprises a controller component and a bypass pipe, wherein the controller component is electrically connected to the heat exchanger and the heater; The controller assembly is connected in series with the heat exchanger to form an external circuit for the motor; One end of the bypass pipeline is connected to the pipeline between the controller component and the heat exchanger, and the other end is connected to the outside of the motor external circuit.

4. A vehicle, characterized in that: It comprises a vehicle body and a motor thermal management system according to any one of claims 1 to 3, wherein the motor thermal management system is connected to the vehicle body.

5. A control method for a motor thermal management system, characterized in that: The method comprises: Get the temperature information of the motor; The heater is controlled to start and stop based on the temperature information.

6. The method according to claim 5, characterized in that The temperature information includes the ambient temperature of the motor and the temperature of the first flowing medium in the first motor internal circuit or the second motor internal circuit. The method for controlling the heater to start and stop based on the temperature information includes: If the ambient temperature value is greater than the ambient temperature threshold, the first flow medium is controlled to circulate in the internal loop of the second motor, and the heater is controlled to stop heating; and\or, If the temperature value of the first flow medium is greater than the first cooling temperature threshold, the first flow medium is controlled to circulate in the internal loop of the second motor, and the heater is controlled to stop heating.

7. The method according to claim 6, characterized in that The method further comprises: If the ambient temperature value is not greater than the ambient temperature threshold, and the temperature value of the first flow medium is not greater than the first cooling temperature threshold, the first flow medium is controlled to circulate in the internal loop of the first motor.

8. The method according to claim 6, characterized in that The method further comprises: If the temperature value of the first flow medium is less than a second cooling temperature threshold, the heater is controlled to start heating; wherein the second cooling temperature threshold is less than the first cooling temperature threshold.

9. The method according to claim 5, characterized in that The temperature information includes the ambient temperature of the motor and the temperature of the second flow medium in the external circuit of the motor. The method for controlling the heater to start and stop based on the temperature information includes: If the ambient temperature value is greater than the ambient temperature threshold; and\or, the temperature value of the second flow medium is greater than the third cooling temperature threshold, the second flow medium is controlled to circulate in the external circuit of the motor, and the heater is controlled to stop heating.

10. The method according to claim 9, characterized in that The method further comprises: If the ambient temperature value is not greater than the ambient temperature threshold and the temperature value of the second flow medium is not greater than the third cooling temperature threshold, the second flow medium is controlled to flow to the outside of the motor external circuit through a bypass pipe before flowing through the heat exchanger.

Images