An electric motor system and vehicle

Abstract

The application discloses a motor system and a vehicle, and belongs to the technical field of motor cooling, wherein the motor system comprises a motor body, a liquid cooling loop and a gas cooling loop. The motor body is provided with a liquid inlet, a liquid outlet and an exhaust port; the output end of the liquid cooling loop is connected with the liquid inlet, and the input end of the liquid cooling loop is connected with the liquid outlet. By arranging the gas cooling loop, the gas-phase heat exchange working medium can be extracted from the motor body, thereby effectively avoiding the accumulation of the gas-phase heat exchange working medium in the motor body and affecting the heat dissipation effect of the motor body. Meanwhile, since the gas-phase heat exchange working medium can be discharged from the motor body through the gas cooling loop, the situation that the gas-phase heat exchange working medium is extracted into the liquid cooling loop along with the liquid-phase heat exchange working medium can be relieved, the damage risk of the liquid pump in the liquid cooling loop can be reduced, the normal pressure building of the liquid-phase heat exchange working medium in the liquid cooling loop can be facilitated, and the stability of the liquid-phase heat exchange working medium supply can be improved.

Description

Technical Field

[0001] This application relates to the field of motor cooling technology, and more particularly to a motor system and a vehicle. Background Technology

[0002] With the rapid development of new energy vehicles, the power density of motors is constantly increasing, and the requirements for motor cooling systems are becoming increasingly stringent. Phase change cooling motors, as a new type of motor, utilize the latent heat of vaporization of the phase change heat exchanger to absorb heat, significantly improving the motor's internal heat dissipation and heat exchange capabilities. Currently, most automotive motors use direct oil cooling or indirect water jacket cooling for heat dissipation. Phase change cooling motors are typically equipped with a liquid cooling circuit, which usually includes components such as filters, liquid pipelines, liquid pumps, and heat exchangers, and is only suitable for circulating the liquid phase heat exchanger.

[0003] However, a large amount of gaseous heat exchange medium is generated inside the phase change cooling motor during operation. If only a liquid cooling circuit is used, the gaseous heat exchange medium is prone to accumulate inside the motor, which seriously affects the heat dissipation effect of the motor. Moreover, the gaseous heat exchange medium will enter the liquid cooling circuit under the suction of the liquid pump, which will not only reduce the service life and reliability of the liquid pump, but also affect the normal pressure build-up of the liquid heat exchange medium after the gaseous heat exchange medium enters the liquid cooling circuit, resulting in unstable supply of liquid heat exchange medium. Summary of the Invention

[0004] This application provides an electric motor system and vehicle designed to prevent the accumulation of gaseous heat exchange medium inside the motor body and to mitigate the situation where the gaseous heat exchange medium is drawn into the liquid cooling circuit along with the liquid heat exchange medium.

[0005] To achieve the above objectives, according to a first aspect of this application, an electric motor system is provided, comprising: The motor body has a liquid inlet, a liquid outlet, and a vent. A liquid cooling circuit, wherein the output end of the liquid cooling circuit is connected to the liquid inlet and the input end of the liquid cooling circuit is connected to the liquid outlet, and the liquid cooling circuit is configured to deliver liquid heat exchange medium into the motor body and collect the liquid heat exchange medium after heat exchange with the motor body; A gas cooling circuit, the input end of which is connected to the exhaust port, is configured to collect the gaseous heat exchange medium generated within the motor body.

[0006] Optionally, the gas cooling circuit includes a first pump body, a gas-liquid separator, and a condenser arranged sequentially along the gas flow direction. The input end of the first pump body is connected to the exhaust port, the output end of the first pump body is connected to the input end of the gas-liquid separator, and the gas output end of the gas-liquid separator is connected to the input end of the condenser.

[0007] Optionally, the gas cooling circuit further includes a first storage device, which is disposed between the output end of the first pump body and the input end of the gas-liquid separator.

[0008] Optionally, the gas cooling circuit further includes a manifold, one input end of which is connected to the output end of the condenser, the other input end of which is connected to the liquid output end of the gas-liquid separator, and the output end of which is connected to the liquid cooling circuit.

[0009] Optionally, the motor body is provided with a pressure detection device and a pressure regulating module. The pressure detection device is configured to monitor the internal pressure value of the motor body, and the pressure regulating module is electrically connected to the pressure detection device. The pressure regulating module is used to control the internal pressure of the motor body.

[0010] Optionally, the motor system further includes a pressure regulating circuit, the motor body has a pressure regulating port, the pressure regulating port is connected to the pressure regulating circuit, the pressure regulating circuit is electrically connected to the pressure regulating module, and the pressure regulating module is configured to adjust the internal pressure of the motor body to the rated pressure according to the pressure value of the air pressure detection element when the motor body is started; And / or, the pressure regulating module is electrically connected to the first pump body and is used to adjust the operating power of the first pump body according to the internal pressure value of the motor body.

[0011] Optionally, the pressure regulating circuit includes a second pump body and a second storage device. One end of the second pump body is connected to the pressure regulating port, and the other end of the second pump body is connected to the second storage device. The second pump body is electrically connected to the pressure regulating module. The pressure regulating module is configured to control the second pump body to deliver gas inside the motor body to the second storage device or deliver gas inside the second storage device to the motor body according to the pressure value of the gas pressure detection device, so as to adjust the internal pressure of the motor body to the rated pressure.

[0012] Optionally, the liquid cooling circuit includes a third pump body, a liquid cooling component, a third storage component, and a fourth pump body arranged sequentially along the liquid flow direction. The input end of the third pump body is connected to the drain port, the output end of the third pump body is connected to the input end of the liquid cooling component, the output end of the liquid cooling component is connected to the third storage component, the input end of the fourth pump body is connected to the third storage component, and the output end of the fourth pump body is connected to the liquid inlet.

[0013] Optionally, the third storage device is connected to the output terminal of the bus connector; and / or, The liquid cooling circuit also includes a filter element, the input end of which is connected to the drain port, and the output end of which is connected to the input end of the third pump body.

[0014] Optionally, the motor body is provided with a temperature detection element, which is electrically connected to both the third pump body and the fourth pump body. The temperature detection element is configured to detect the temperature of the motor body and adjust the operating power of the third pump body and the fourth pump body according to the temperature of the motor body.

[0015] According to a second aspect of this application, a vehicle is provided, including the aforementioned motor system.

[0016] In the motor system of this application embodiment, by setting up a gas cooling circuit, the gaseous heat exchange medium can be extracted from the motor body, effectively avoiding the accumulation of the gaseous heat exchange medium inside the motor body and affecting the heat dissipation effect of the motor body. At the same time, since the gaseous heat exchange medium can be discharged from the motor body through the gas cooling circuit, the situation where the gaseous heat exchange medium is drawn into the liquid cooling circuit along with the liquid heat exchange medium can be alleviated. This not only reduces the risk of damage to the liquid pump in the liquid cooling circuit, but also helps the liquid heat exchange medium in the liquid cooling circuit to build up pressure normally and improves the stability of the liquid heat exchange medium supply.

[0017] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0020] Figure 1 This is a schematic diagram of the structure of the first embodiment of the motor system provided in the exemplary embodiments of this application; Figure 2 yes Figure 1 A schematic diagram of the structure of the motor body; Figure 3 yes Figure 1 Schematic diagram of the connection structure between the liquid cooling circuit and the gas cooling circuit; Figure 4 This is an internal sectional view of the second embodiment of the motor system provided in the exemplary embodiments of this application; Figure 5 This is a schematic diagram of the structure of the third embodiment of the motor system provided in the exemplary embodiments of this application; Figure 6 This is a schematic diagram of the vehicle structure provided in an exemplary embodiment of this application.

[0021] Explanation of reference numerals in the attached figures: 1. Motor body; 11. Liquid inlet; 12. Liquid outlet; 13. Exhaust outlet; 14. Pressure detection device; 15. Pressure regulating port; 16. Temperature detection device; 2. Liquid cooling circuit; 21. Third pump body; 22. Liquid cooling component; 23. Third storage component; 24. Fourth pump body; 25. Filter component; 3. Gas cooling circuit; 31. First pump body; 32. Gas-liquid separator; 33. Condenser; 34. First storage component; 35. Manifold; 4. Pressure regulating circuit; 41. Second pump body; 42. Second storage component; 5. Vehicle; 6. Fifth pump body. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0023] According to the first aspect of this application, please refer to Figures 1 to 3 This application provides an electric motor system, including an electric motor body 1, a liquid cooling circuit 2, and a gas cooling circuit 3.

[0024] Specifically, the motor body 1 is provided with one or more outlets. The motor body 1 has a liquid inlet 11, a liquid outlet 12, and an exhaust outlet 13. The motor body 1 can be a phase change cooled motor. The motor body 1 is filled with a phase change heat exchange medium. The phase change heat exchange medium can be a fluorine-based phase change coolant or an insulating cooling oil. At least one liquid inlet 11 is provided. The liquid inlet 11 is used to receive the liquid phase heat exchange medium from the liquid cooling circuit 2. After entering the motor body 1, the liquid phase heat exchange medium absorbs the heat generated by the operation of the motor body 1. Part of the liquid phase heat exchange medium undergoes a phase change and transforms into a gas phase heat exchange medium. At least one drain outlet 12 is provided. The drain outlet 12 is used to discharge the liquid phase heat exchange medium after heat exchange inside the motor body 1. The liquid phase heat exchange medium is sent to the liquid cooling circuit 2 for heat dissipation and cooling. At least one exhaust outlet 13 is provided. The exhaust port 13 is used to discharge the gaseous heat exchange medium generated inside the motor body 1 due to the vaporization of the liquid heat exchange medium, so as to prevent the gaseous heat exchange medium from accumulating inside the motor body 1.

[0025] The output end of the liquid cooling circuit 2 is connected to the inlet 11, and the input end is connected to the outlet 12. The liquid cooling circuit 2 is configured to deliver a liquid heat exchange medium into the motor body 1 and collect the liquid heat exchange medium after heat exchange with the motor body 1. Specifically, the liquid cooling circuit 2 receives the liquid heat exchange medium from inside the motor body 1 after heat exchange and temperature rise from the outlet 12. During the flow of the liquid heat exchange medium within the liquid cooling circuit 2, it can be filtered and cooled, and subsequently re-enter the motor body 1 through the inlet 11, enabling the liquid heat exchange medium to provide circulating cooling for the motor body 1.

[0026] The input end of the gas cooling circuit 3 is connected to the exhaust port 13. The gas cooling circuit 3 is configured to collect the gaseous heat exchange medium generated inside the motor body 1. The gas cooling circuit 3 can actively extract the gaseous heat exchange medium inside the motor body 1, preventing the accumulation of the gaseous heat exchange medium from affecting the heat dissipation of the motor body 1, and reducing the amount of gaseous heat exchange medium entering the liquid cooling circuit 2 along with the liquid heat exchange medium. Furthermore, during the flow of the gaseous heat exchange medium inside the gas cooling circuit 3, it can condense into a liquid heat exchange medium and re-enter the liquid cooling circuit 2, entering the motor body 1 along with the liquid heat exchange medium in the liquid cooling circuit 2, thus jointly achieving cyclic cooling of the motor body 1.

[0027] Thus, by setting up the gas cooling circuit 3, the gaseous heat exchange medium can be extracted from the motor body 1, effectively preventing its accumulation inside the motor body 1 and affecting its heat dissipation. Simultaneously, since the gaseous heat exchange medium can be discharged from the motor body 1 through the gas cooling circuit 3, the possibility of it being drawn into the liquid cooling circuit 2 along with the liquid heat exchange medium can be mitigated. This not only reduces the risk of damage to the liquid pump in the liquid cooling circuit 2 but also facilitates the normal pressure build-up of the liquid heat exchange medium in the liquid cooling circuit 2, improving the stability of the liquid heat exchange medium supply.

[0028] Please refer to Figures 1 to 3 The gas cooling circuit 3 includes a first pump body 31, a gas-liquid separator 32 and a condenser 33 arranged sequentially along the gas flow direction. The input end of the first pump body 31 is connected to the exhaust port 13, the output end of the first pump body 31 is connected to the input end of the gas-liquid separator 32, and the gas output end of the gas-liquid separator 32 is connected to the input end of the condenser 33.

[0029] Specifically, the first pump body 31 can be in the form of, but is not limited to, a vacuum pump. The input end of the first pump body 31 is connected to the exhaust port 13 of the motor body 1. When the first pump body 31 is running, it generates a negative pressure at the input end, and under the action of the negative pressure, it can extract the gaseous heat exchange medium inside the motor body 1 through the exhaust port 13.

[0030] The gas-liquid separator 32 can be in the form of, but is not limited to, a gas-liquid separator. The output end of the first pump body 31 is connected to the input end of the gas-liquid separator 32. The gas-liquid separator 32 can separate a small amount of liquid heat exchange medium entrained in the gas phase heat exchange medium. Since the gas phase heat exchange medium may carry liquid heat exchange medium entrained during its extraction from the motor and flow in the gas cooling circuit 3, in order to avoid the gas phase heat exchange medium carrying liquid heat exchange medium being directly fed into the condenser 33 and affecting the condensation effect of the condenser 33 on the gas phase heat exchange medium, thus reducing the condensation efficiency of the gas phase heat exchange medium, the gas-liquid separator 32 is provided to separate the liquid heat exchange medium from the gas phase heat exchange medium, which helps to ensure the normal operation of the condenser 33.

[0031] The condenser 33 can be in the form of, but is not limited to, a condenser. The gas-liquid separator 32 has a gas outlet. The gas outlet of the gas-liquid separator 32 is connected to the inlet of the condenser 33. In practical applications, the condenser 33 can be connected to the thermal management system of the vehicle 5, allowing the cooling medium within the condenser 33 to exchange heat with the cooling medium as the gaseous heat exchange medium passes through, releasing its latent heat of vaporization and condensing into a liquid heat exchange medium. The condensed liquid heat exchange medium can then flow out through the outlet of the condenser 33.

[0032] Thus, by setting up the gas-liquid separator 32 between the first pump body 31 and the condenser 33, the liquid phase heat exchange medium entrained in the gas phase heat exchange medium can be separated before the gas phase heat exchange medium enters the condenser 33. This ensures the condensation effect of the condenser 33 on the gas phase heat exchange medium and prevents the liquid phase heat exchange medium from entering the condenser 33 along with the gas phase heat exchange medium and clogging the condenser 33, thus preventing the condenser 33 from experiencing a decrease in condensation efficiency.

[0033] Please refer to Figure 1 and Figure 3 The gas cooling circuit 3 also includes a first storage component 34, which is disposed between the output end of the first pump body 31 and the input end of the gas-liquid separator 32.

[0034] Specifically, the first storage component 34 can be in the form of, but is not limited to, a buffer tank or a gas storage chamber. By placing the first storage component 34 between the output end of the first pump body 31 and the input end of the gas-liquid separator 32, the pressure of the gas-phase heat exchange medium entering the gas cooling circuit 3 can be balanced, airflow pulsations in the gas cooling circuit 3 can be buffered, and the gas-phase heat exchange medium airflow drawn from the motor body 1 by the first pump body 31 can be prevented from directly impacting the gas-liquid separator 32, reducing the risk of failure and damage to the gas-liquid separator 32. In addition, when the operating load of the motor body 1 or the power of the first pump body 31 fluctuates, the first storage component 34 can play a stabilizing role, ensuring the stable operation of the gas cooling circuit 3. Furthermore, the gas-phase heat exchange medium can be briefly retained in the first storage component 34, and part of the gas-phase heat exchange medium can be cooled in the first storage component 34, which can reduce the temperature of the gas-phase heat exchange medium to a certain extent, which is beneficial to the subsequent condensation of the gas-phase heat exchange medium.

[0035] It should be noted that the first storage unit 34 is a buffer tank or gas storage chamber with a constant pressure structure, which can maintain the stability of the internal gas pressure, so that the gas phase heat exchange medium enters the gas-liquid separator 32 from the first storage unit 34 at a constant or approximately constant flow rate. This prevents the gas phase heat exchange medium from entering the gas-liquid separator 32 at uneven flow rates due to pressure changes in the first storage unit 34, thus ensuring the stability of the gas-liquid separator 32 and reducing the risk of malfunction of the gas-liquid separator 32.

[0036] Please refer to Figure 1 and Figure 3 The gas cooling circuit 3 also includes a manifold 35, one input end of which is connected to the output end of the condenser 33, the other input end of which is connected to the liquid output end of the gas-liquid separator 32, and the output end of the manifold 35 is connected to the liquid cooling circuit 2.

[0037] Specifically, the manifold 35 can be in the form of, but is not limited to, a tee connector. The manifold 35 has two input terminals and one output terminal. In this embodiment, the gas-liquid separator 32 can also have a liquid output terminal. One input terminal of the manifold 35 is connected to the output terminal of the condenser 33, thereby receiving the liquid-phase heat exchange medium discharged from the condenser 33. The other input terminal of the manifold 35 is connected to the liquid output terminal of the gas-liquid separator 32, thereby receiving the liquid-phase heat exchange medium separated by the gas-liquid separator 32. The output terminal of the manifold 35 is connected to the liquid cooling circuit 2, thereby allowing the liquid-phase heat exchange medium discharged from the condenser 33 and the gas-liquid separator 32 to be collected and transported together to the liquid cooling circuit 2.

[0038] Thus, by setting the manifold 35, the liquid heat exchange medium separated in the gas-liquid separator 32 and the liquid heat exchange medium condensed in the condenser 33 can be combined simultaneously and further transported to the liquid cooling circuit 2 to participate in the cooling cycle of the motor body 1. This helps to ensure that the heat exchange medium in the motor system remains constant and prevents the problem of heat exchange medium reduction in the motor system due to the setting of the gas cooling circuit 3. In addition, by setting the manifold 35, the liquid heat exchange medium flowing out of the condenser 33 and the gas-liquid separator 32 is prevented from flowing back into the pipeline of the gas cooling circuit 3, which helps to simplify the structure of the gas cooling circuit 3 and reduce the risk of leakage in the gas cooling circuit 3.

[0039] It should be noted that the manifold 35 can be a solenoid three-way valve. By setting the manifold 35 as a solenoid three-way valve, the manifold 35 can adjust the opening of the input and output ends according to the flow rate of the gas-liquid separator 32 and the condenser 33, so that the liquid heat exchange medium can flow from the gas-liquid separator 32 and the condenser 33 to the liquid cooling circuit 2 in a timely manner.

[0040] Please refer to Figure 1 and Figure 2 The motor body 1 is equipped with a pressure detection element 14 and a pressure regulating module. The pressure detection element 14 is configured to monitor the internal pressure value of the motor body 1. The pressure regulating module is electrically connected to the pressure detection element 14 and is used to control the internal pressure of the motor body.

[0041] Specifically, the air pressure detection element 14 can be in the form of, but is not limited to, a pressure sensor. The detection end of the air pressure detection element 14 extends into the motor body 1, thereby enabling real-time monitoring of the pressure value inside the motor body 1. In this embodiment, the air pressure detection element 14 is electrically connected to the pressure regulating module. It should be noted that the pressure regulating module is a general-purpose vehicle electronic control unit, which is conventional technology in this field and will not be described in detail here.

[0042] Furthermore, in this embodiment, the pressure regulating module can be electrically connected to the first pump body 31. The pressure regulating module can be used to adjust the operating power of the first pump body 31 according to the internal pressure value of the motor body 1. During the operation of the motor body 1, the air pressure detection element 14 continuously collects the internal pressure signal of the motor body 1 and transmits the pressure signal to the pressure regulating module. The pressure regulating module can adjust the operating power of the first pump body 31 according to a preset pressure threshold. When the internal pressure of the motor body 1 increases, it indicates that the generation rate of the gas phase heat exchange medium increases or the exhaust of the gas phase heat exchange medium is not smooth. At this time, the pressure regulating module increases the operating power of the first pump body 31, thereby increasing the rate at which the gas phase heat exchange medium enters the gas cooling circuit 3, thereby reducing the internal pressure of the motor body 1. When the internal pressure of the motor body 1 decreases to the preset pressure threshold, the pressure regulating module reduces the operating power of the first pump body 31, which helps to save energy consumption of the motor system while ensuring the normal operation of the motor body 1.

[0043] It should be noted that when the internal pressure of the motor body 1 is too high, the boiling point temperature of the liquid heat exchange medium will increase; conversely, when the internal pressure of the motor body 1 is too low, the boiling point temperature of the liquid heat exchange medium will decrease. When the internal pressure of the motor body 1 is at a preset pressure threshold, it indicates that the internal pressure of the motor body 1 is within the normal operating range. The liquid heat exchange medium inside the motor body 1 has a normal boiling point temperature, and the liquid heat exchange medium can perform normal evaporative cooling within the motor body 1.

[0044] Thus, by setting the air pressure detection element 14, the internal pressure of the motor body 1 can always be kept within the normal operating range. This ensures that the gas phase heat exchange medium is discharged from the motor body 1 in a timely manner, and also ensures that the boiling point temperature of the liquid phase heat exchange medium inside the motor body 1 is kept within the normal temperature range. This allows the liquid phase heat exchange medium to evaporate and cool normally inside the motor body 1, avoiding abnormal heat dissipation of the motor body 1.

[0045] Please refer to Figure 1 and Figure 2 The motor system also includes a pressure regulating circuit 4. The motor body 1 has a pressure regulating port 15, which is connected to the pressure regulating circuit 4. The pressure regulating circuit 4 is electrically connected to the pressure regulating module. The pressure regulating module is configured to adjust the internal pressure of the motor body 1 to the rated pressure according to the pressure value of the air pressure detection element 14 when the motor body 1 is started.

[0046] Specifically, the rated pressure can be a preset pressure threshold calculated based on the boiling point temperature of the liquid heat exchange medium. When the internal pressure of the motor body 1 is at the preset pressure threshold, the liquid heat exchange medium has a normal boiling point temperature. When the internal temperature of the motor body 1 reaches the normal boiling point temperature, the liquid heat exchange medium can normally evaporate and cool inside the motor body 1.

[0047] Before the motor body 1 starts, the liquid heat exchange medium will naturally evaporate inside the motor body 1, and the gaseous heat exchange medium will naturally condense inside the motor body 1, which may cause the internal pressure of the motor body 1 to differ from the rated pressure. When the pressure detection element 14 detects that the internal pressure of the motor body 1 is greater than the rated pressure, the pressure regulating circuit 4 can extract the gas inside the motor body 1 until the internal pressure of the motor body 1 is adjusted to the rated pressure, at which point the pressure regulating circuit 4 stops working. When the pressure detection element 14 detects that the internal pressure of the motor body 1 is less than the rated pressure, the pressure regulating circuit 4 can supply gas into the motor body 1 until the internal pressure of the motor body 1 is adjusted to the rated pressure, at which point the pressure regulating circuit 4 stops working.

[0048] Thus, by setting up the pressure regulating circuit 4, the internal pressure of the motor body 1 can be adjusted to the rated pressure, so that the liquid heat exchange medium inside the motor body 1 has a normal boiling point temperature when the motor body 1 starts, and the liquid heat exchange medium can carry out normal evaporation and cooling when the motor body 1 starts, preventing abnormal heat dissipation of the motor body 1 in the initial stage of startup.

[0049] Please refer to Figure 1 and Figure 2 The pressure regulating circuit 4 includes a second pump body 41 and a second storage unit 42. One end of the second pump body 41 is connected to the pressure regulating port 15, and the other end of the second pump body 41 is connected to the second storage unit 42. The second pump body 41 is electrically connected to the pressure regulating module. The pressure regulating module is configured to control the second pump body 41 to deliver the gas inside the motor body 1 to the second storage unit 42 or deliver the gas inside the second storage unit 42 to the motor body 1 according to the pressure value of the gas pressure detection element 14, so as to adjust the internal pressure of the motor body 1 to the rated pressure.

[0050] Specifically, the second pump body 41 can be, but is not limited to, a bidirectional pump. The second storage unit 42 can be, but is not limited to, a gas storage cylinder. The second storage unit 42 is pre-filled with at least one of an inert gas and a gas-phase heat exchange medium at a certain pressure. The second pump body 41 is electrically connected to a pressure regulating module. The pressure regulating module is configured to control the second pump body 41 to deliver gas from inside the motor body 1 to the second storage unit 42, or to deliver gas from inside the second storage unit 42 to inside the motor body 1, based on the pressure value of the pressure detection element 14, thereby adjusting the internal pressure of the motor body 1 to the rated pressure.

[0051] Before the motor body 1 starts, the air pressure detection device 14 monitors the internal pressure of the motor body 1. If the internal pressure of the motor body 1 is higher than the rated pressure, the pressure regulating module controls the second pump body 41 to operate in air extraction mode. The second pump body 41 extracts excess gas from the motor body 1 and sends it to the second storage container 42 for storage. If the internal pressure of the motor body 1 is lower than the rated pressure, the pressure regulating module controls the second pump body 41 to operate in air filling mode. The second pump body 41 fills the motor body 1 with gas from the second storage container 42. When the internal pressure of the motor body 1 reaches the rated pressure, the second pump body 41 stops working.

[0052] It should be noted that the second pump 41 can only be started after the pressure detection element 14 detects that the internal pressure of the motor body 1 is greater than or less than the rated pressure by a certain value. In practical applications, the rated pressure of the motor body 1 can be atmospheric pressure. Before the motor body 1 is started, it is in a stationary state, and the pressure detection element 14 monitors the internal pressure of the motor body 1 in real time. When the pressure detection element 14 detects that the internal pressure of the motor body 1 is greater than atmospheric pressure by 1 kPa, the pressure regulating module controls the second pump 41 to operate in the air extraction mode, extracting excess gas from the motor body 1 and sending it to the second storage unit 42. When the internal pressure of the motor body 1 drops to atmospheric pressure, the second pump 41 is controlled to stop working. When the pressure detection element 14 detects that the internal pressure of the motor body 1 is less than atmospheric pressure by 1 kPa, the pressure regulating module controls the second pump 41 to operate in the air filling mode, filling the motor body 1 with gas from the second storage unit 42. When the internal pressure of the motor body 1 rises to atmospheric pressure, the second pump 41 is controlled to stop working.

[0053] Thus, through the cooperation of the second pump body 41 and the second storage component 42, bidirectional adjustment of the internal pressure of the motor body 1 can be achieved, ensuring that the motor body 1 can start and run with the best internal pressure under various ambient temperatures and initial conditions. This can solve the problem of excessive difference between the internal pressure and the rated pressure of the motor body 1 before startup, and improve the operational stability and reliability of the motor system.

[0054] It should be noted that in this embodiment, the first storage unit 34 has a maximum storage capacity threshold, and the condenser 33 has a maximum condensation power threshold. When the first storage unit 34 reaches its maximum storage capacity threshold, and / or the condenser 33 reaches its maximum condensation power threshold, it indicates that the gas cooling circuit 3 is in its maximum processing condition. Before the gas cooling circuit 3 reaches its maximum processing condition, the pressure regulating module can adjust the power of the first pump 31 to resolve the overpressure problem inside the motor body 1. When the first storage unit reaches its maximum storage capacity threshold, and / or the condenser 33 reaches its maximum condensation power threshold, the pressure regulating module can adjust the operation of the second pump 41 to draw excess gas inside the motor body 1 into the second storage unit 42 for storage. Thus, when the internal pressure of the motor body 1 rises too quickly or exceeds the processing limit of the gas cooling circuit 3, the pressure regulating circuit 4 can be controlled to intervene to prevent overpressure problems from occurring inside the motor body 1 during operation. Please refer to... Figures 1 to 3 The liquid cooling circuit 2 includes a third pump body 21, a liquid cooling component 22, a third storage component 23, and a fourth pump body 24 arranged sequentially along the liquid flow direction. The input end of the third pump body 21 is connected to the drain port 12, the output end of the third pump body 21 is connected to the input end of the liquid cooling component 22, the output end of the liquid cooling component 22 is connected to the third storage component 23, the input end of the fourth pump body 24 is connected to the third storage component 23, and the output end of the fourth pump body 24 is connected to the liquid inlet 11.

[0055] Specifically, both the third pump body 21 and the fourth pump body 24 can be in the form of, but are not limited to, liquid pumps. The input end of the third pump body 21 is connected to the drain port 12 of the motor body 1. The output end of the third pump body 21 is connected to the input end of the liquid cooling component 22. The third pump body 21 can extract the liquid heat exchange medium flowing out of the motor body 1 and transport it to the downstream liquid cooling component 22. The liquid cooling component 22 can be in the form of, but is not limited to, a heat exchanger. The heat exchanger can be connected to the cooling system of the vehicle 5. The heat exchanger contains a cooling medium, which can cool the high-temperature liquid heat exchange medium flowing out of the motor body 1. Through the cooling of the liquid cooling component 22, the temperature of the liquid heat exchange medium decreases, and it can then be transported back to the interior of the motor body 1 for circulating cooling. The third storage component 23 can be in the form of, but is not limited to, a liquid storage tank. The output end of the liquid cooling component 22 is connected to the third storage component 23. The third storage component 23 can temporarily store the liquid heat exchange medium cooled by the liquid cooling component 22. The third storage unit 23 buffers the flow fluctuations of the liquid heat exchange medium entering the liquid cooling circuit 2 via the third pump body 21. The input end of the fourth pump body 24 is connected to the third storage unit 23, and the output end of the fourth pump body 24 is connected to the liquid inlet 11 of the motor body 1. Through the cooperation of the fourth pump body 24 and the third storage unit 23, the liquid heat exchange medium in the third storage unit 23 can be pumped back into the motor body 1, and the fourth pump body 24 can continuously draw out the bubble-free liquid heat exchange medium, ensuring that the liquid cooling circuit 2 can provide a stable supply of liquid heat exchange medium to the motor body 1.

[0056] Thus, by using the third pump body 21, liquid cooling component 22, third storage component 23 and fourth pump body 24, not only can the liquid phase heat exchange medium be cooled and temporarily stored, but also when the third pump body 21 causes air suction due to the intake of a small amount of gas, the fourth pump body 24 can still draw out the air-free liquid phase heat exchange medium from the third storage component 23, ensuring the reliability of the liquid cooling circuit 2 supplying liquid to the motor body 1.

[0057] Please refer to Figure 1 and Figure 3 The third storage unit 23 is connected to the output end of the manifold 35. Specifically, the liquid heat exchange medium recovered from the gas cooling circuit 3, from the condenser 33 and the gas-liquid separator 32, is collected by the manifold 35 and then transported to the third storage unit 23. The liquid heat exchange medium from the gas cooling circuit 3 is mixed with the liquid heat exchange medium from the liquid cooler 22 and temporarily stored together in the third storage unit 23. In the third storage unit 23, the liquid heat exchange medium from the liquid cooler 22 and the liquid heat exchange medium from the gas cooling circuit 3 are mixed, making the temperature of the liquid heat exchange medium drawn by the fourth pump 24 from the third storage unit 23 more uniform.

[0058] The liquid cooling circuit 2 also includes a filter element 25. The input end of the filter element 25 is connected to the drain port 12, and the output end of the filter element 25 is connected to the input end of the third pump body 21. Specifically, the filter element 25 can be in the form of a filter, including but not limited to a filter. The filter element 25 can filter impurities such as iron filings generated inside the motor body 1 during operation. By placing the filter element 25 upstream of the third pump body 21, the cleanliness of the liquid phase heat exchange medium in the liquid cooling circuit 2 can be maintained, preventing impurities inside the motor body 1 from entering the third pump body 21 and the liquid cooling component 22, protecting the downstream structure of the third pump body 21 and the liquid cooling component 22 from damage, and helping to extend the service life of the liquid cooling circuit 2.

[0059] Please refer to Figure 1 and Figure 2 The motor body 1 is equipped with a temperature detection element 16, which is electrically connected to the third pump body 21 and the fourth pump body 24. The temperature detection element 16 is configured to detect the temperature of the motor body 1 and adjust the operating power of the third pump body 21 and the fourth pump body 24 according to the temperature of the motor body 1.

[0060] Specifically, the temperature detection element 16 can be in the form of, but is not limited to, a temperature sensor. The temperature detection element 16 can detect the actual operating temperature of the motor body 1. The temperature detection element 16 can be installed on the stator winding, stator core, or housing of the motor body 1, without specific limitations. In this embodiment, the temperature detection element 16, the third pump body 21, and the fourth pump body 24 are all electrically connected to the voltage regulating module.

[0061] Temperature sensor 16 is configured to detect the temperature of motor body 1 and adjust the operating power of third pump body 21 and fourth pump body 24 according to the temperature of motor body 1. When temperature sensor 16 detects an increase in the temperature of motor body 1, it indicates an increase in the heat dissipation demand of motor body 1. The voltage regulating module increases the operating power of third pump body 21 and fourth pump body 24, and the rotation speed of third pump body 21 and fourth pump body 24 increases, thereby increasing the circulation flow rate of the liquid heat exchange medium, so that the liquid heat exchange medium can carry away more heat when flowing inside motor body 1. When temperature sensor 16 detects that the temperature of motor body 1 drops below the set temperature value, the voltage regulating module reduces the operating power of third pump body 21 and fourth pump body 24, and the rotation speed of third pump body 21 and fourth pump body 24 decreases, thereby saving energy consumption of the motor system.

[0062] It should be noted that the third pump body 21 and the fourth pump body 24 are adjusted simultaneously, which can keep the inflow and outflow of the third storage unit 23 roughly matched, which helps to keep the liquid level inside the third storage unit 23 stable.

[0063] Thus, by setting the temperature detection element 16, the operating power of the third pump body 21 and the fourth pump body 24 can be adaptively adjusted according to the changes in the heat load of the motor system. This ensures that the motor system is adequately cooled under high-temperature conditions and reduces the energy consumption of the motor system under low-temperature conditions, further enhancing the intelligence of the motor system.

[0064] In other embodiments, please refer to Figure 4 and Figure 5 The motor system can also be configured with multiple motor bodies 1. The following explanation uses two motor bodies 1 as an example.

[0065] Specifically, please refer to Figure 4 The two motor bodies 1 can be connected in parallel. The two motor bodies 1 share a common gas cooling circuit 3 and liquid cooling circuit 2. Furthermore, each motor body 1 is independently equipped with a pressure sensor 14 and a temperature sensor 16 to monitor the pressure and temperature of each motor body 1 individually. Each motor body 1 is also independently equipped with a pressure regulating circuit 4 to adjust the internal pressure of each motor body 1 individually.

[0066] In practical applications, the liquid inlets 11 of the two motor bodies 1 can be connected in parallel to the same fourth pump body 24, the liquid outlets 12 of the two motor bodies 1 can be connected in parallel to the same filter element 25, and the exhaust ports 13 of the two motor bodies 1 can be connected in parallel to the same first pump body 31. By connecting the motor bodies 1 in parallel, the normal operation of other motor bodies 1 will not be affected when a single motor body 1 fails. This method is suitable for use scenarios where multiple motor bodies 1 with similar power and spatial arrangement are used.

[0067] Please refer to Figure 5 The two motor bodies 1 can be connected in series. Both motor bodies 1 also share a single set of liquid cooling circuit 2 and gas cooling circuit 3. Compared to the case where the two motor bodies 1 are connected in parallel, in the case of two motor bodies 1 connected in series, the first motor body 1 (e.g., Figure 5 The drain port 12 of the motor body 1 on the right is not directly connected to the liquid cooling circuit 2, but is connected to the second motor body 1 (such as the fifth pump body 6) through the fifth pump body 6. Figure 5The liquid inlet 11 of the motor body 1 on the left is connected. The liquid outlet 12 of the second motor body 1 is connected to the liquid cooling circuit 2. Furthermore, both motor bodies 1 are independently equipped with a pressure sensor 14 and a temperature sensor 16 to monitor the pressure and temperature of each motor body 1 individually. Both motor bodies 1 are independently equipped with a pressure regulating circuit 4 to adjust the internal pressure of each motor body 1 individually. It should be noted that the operating power of the fifth pump body 6, connected to the liquid outlet 12 of the first motor body 1, can be controlled by the temperature sensor on the second motor body 1. This allows for adaptive adjustment of the operating power of the fifth pump body 6 based on the heat load of the second motor body 1, ensuring sufficient cooling of the motor body 1 under high-temperature conditions and reducing the energy consumption of the fifth pump body 6 under low-temperature conditions.

[0068] In practical applications, the inlet 11 of the first motor body 1 can be connected to the fourth pump body 24, the outlet 12 of the second motor body 1 can be connected to the filter element 25, and the exhaust ports 13 of the two motor bodies 1 can be connected in parallel to the first pump body 31. By connecting the motor bodies 1 in series, the structure of the motor system can be simplified, the installation space requirement is smaller, and it is suitable for scenarios where the motor bodies 1 are far apart and the operating power and losses differ greatly.

[0069] According to the second aspect of this application, please refer to Figure 6 A vehicle 5 is provided, which includes the aforementioned motor system. The vehicle 5 possesses all the beneficial effects of the aforementioned motor system, which will not be elaborated further herein.

[0070] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0071] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0072] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0073] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A motor system, characterized in that, include: The motor body (1) has a liquid inlet (11), a liquid outlet (12) and a vent (13). Liquid cooling circuit (2), the output end of the liquid cooling circuit (2) is connected to the liquid inlet (11), the input end of the liquid cooling circuit (2) is connected to the liquid outlet (12), the liquid cooling circuit (2) is configured to deliver liquid heat exchange medium into the motor body (1), and collect the liquid heat exchange medium after heat exchange with the motor body (1); A gas cooling circuit (3) is provided, the input end of which is connected to the exhaust port (13). The gas cooling circuit (3) is configured to collect the gaseous heat exchange medium generated inside the motor body (1). The gas cooling circuit (3) includes a first pump body (31), a first storage device (34), a gas-liquid separator (32), and a condenser (33) arranged sequentially along the gas flow direction. The input end of the first pump body (31) is connected to the exhaust port (13). The motor body (1) is provided with a gas pressure detection device (14) and a pressure regulating module. The pressure regulating port (15) and the pressure detection device (14) are configured to monitor the internal pressure value of the motor body (1); the motor system also includes a pressure regulating circuit (4), the pressure regulating circuit (4) includes a second pump body (41) and a second storage device (42), one end of the second pump body (41) is connected to the pressure regulating port (15), the other end of the second pump body (41) is connected to the second storage device (42), and the pressure regulating module is electrically connected to the pressure detection device (14), the first pump body (31) and the second pump body (41) respectively; The first storage unit (34) has a maximum storage capacity threshold, and the condenser (33) has a maximum condensation power threshold. Before the gas cooling circuit (3) reaches the maximum processing condition, the pressure regulating module resolves the overpressure inside the motor body (1) by adjusting the power of the first pump (31). When the first storage unit (34) reaches the maximum storage capacity threshold, and / or the condenser (33) reaches the maximum condensation power threshold, the pressure regulating module controls the second pump (41) to deliver the gas inside the motor body (1) to the second storage unit (42).

2. The motor system according to claim 1, characterized in that, The output end of the first pump body (31) is connected to the input end of the gas-liquid separator (32), and the gas output end of the gas-liquid separator (32) is connected to the input end of the condenser (33).

3. The motor system according to claim 2, characterized in that, The first storage device (34) is disposed between the output end of the first pump body (31) and the input end of the gas-liquid separator (32).

4. The motor system according to claim 2, characterized in that, The gas cooling circuit (3) also includes a manifold (35), one input end of which is connected to the output end of the condenser (33), the other input end of which is connected to the liquid output end of the gas-liquid separator (32), and the output end of which is connected to the liquid cooling circuit (2).

5. The motor system according to claim 2, characterized in that, The pressure regulating module is electrically connected to the air pressure detection element (14) and is used to control the internal air pressure of the motor body (1).

6. The motor system according to claim 5, characterized in that, The pressure regulating port (15) is connected to the pressure regulating circuit (4), the pressure regulating circuit (4) is electrically connected to the pressure regulating module, and the pressure regulating module is configured to adjust the internal pressure of the motor body (1) to the rated pressure according to the pressure value of the air pressure detection element (14) when the motor body (1) is started. And / or, the pressure regulating module is electrically connected to the first pump body (31) and is used to adjust the operating power of the first pump body (31) according to the internal pressure value of the motor body (1).

7. The motor system according to claim 6, characterized in that, The pressure regulating module is configured to control the second pump body (41) to deliver the gas inside the motor body (1) to the second storage unit (42) or deliver the gas inside the second storage unit (42) to the motor body (1) according to the pressure value of the gas pressure detection element (14), so as to adjust the internal pressure of the motor body (1) to the rated pressure.

8. The motor system according to claim 4, characterized in that, The liquid cooling circuit (2) includes a third pump body (21), a liquid cooling component (22), a third storage component (23), and a fourth pump body (24) arranged sequentially along the liquid flow direction. The input end of the third pump body (21) is connected to the drain port (12), the output end of the third pump body (21) is connected to the input end of the liquid cooling component (22), the output end of the liquid cooling component (22) is connected to the third storage component (23), the input end of the fourth pump body (24) is connected to the third storage component (23), and the output end of the fourth pump body (24) is connected to the liquid inlet (11).

9. The motor system according to claim 8, characterized in that, The third storage unit (23) is connected to the output end of the bus connector (35); and / or, The liquid cooling circuit (2) also includes a filter element (25), the input end of which is connected to the drain port (12), and the output end of which is connected to the input end of the third pump body (21).

10. The motor system according to claim 8, characterized in that, The motor body (1) is provided with a temperature detection element (16), which is electrically connected to the third pump body (21) and the fourth pump body (24). The temperature detection element (16) is configured to detect the temperature of the motor body (1) and adjust the operating power of the third pump body (21) and the fourth pump body (24) according to the temperature of the motor body (1).

11. A vehicle, characterized in that, Includes the motor system as described in any one of claims 1 to 10.

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