Dual-motor power system and vehicle

Abstract

The dual-motor power system comprises a power mechanism, the power mechanism comprises a first motor assembly, a second motor assembly and a coupling assembly, and the coupling assembly is connected with the first motor assembly and the second motor assembly and used for controlling mechanical energy transmission of the first motor assembly and the second motor assembly; the power supply mechanism is connected with the first motor assembly and the second motor assembly so as to switch a charging mode and a heating mode; when the charging mode is operated, the coupling assembly couples the first motor assembly and the second motor assembly and cuts off mechanical energy output of the first motor assembly and the second motor assembly, so that the first motor assembly operates in an electric mode, and the second motor assembly operates in a power generation mode. When the heating mode is operated, the coupling assembly couples the first motor assembly and the second motor assembly, so that the first motor assembly and the second motor assembly are alternately in an electric mode and a power generation mode. Boost charging, current rising charging and battery heating functions can be realized so as to meet different functional requirements.

Description

Technical Field

[0001] The present application relates to the technical field of power systems, and more specifically, to a dual-motor power system and a vehicle. Background Art

[0002] As society develops, advances in technology and changing tastes in styling have led to significant changes in automobile design. One of these changes involves the power usage and complexity of the various electrical systems within the automobile, especially alternative fuel vehicles such as hybrid vehicles, electric vehicles and fuel cell vehicles.

[0003] As for the development of the electric vehicle industry, the market has put forward new demands on electric vehicles, including boost charging, boost current charging and battery AC heating. Therefore, how to achieve boost charging, boost current charging and battery AC heating is an urgent problem to be solved. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a dual-motor power system and a vehicle that can realize boost charging, boost current charging and battery heating functions to meet different functional requirements.

[0005] In a first aspect, an embodiment of the present application provides a dual-motor power system, comprising: a power mechanism, comprising a first motor component, a second motor component and a coupling component, the coupling component being respectively connected to the first motor component and the second motor component, and being used to control the mechanical energy transfer between the two after coupling the first motor component and the second motor component; a power supply mechanism, which is respectively connected to the first motor component and the second motor component to switch between a charging mode and a heating mode; wherein when the charging mode is operated, the coupling component couples the first motor component and the second motor component, and cuts off the mechanical energy output of the two, so that the first motor component operates in an electric form, and the second motor component operates in a power generation form; when the heating mode is operated, the coupling component couples the first motor component and the second motor component, so that the first motor component and the second motor component are alternately in the electric form and the power generation form.

[0006] In the above implementation process, the first motor assembly and the second motor assembly are coupled through a coupling assembly, and the power supply mechanism is connected to the first motor assembly and the second motor assembly respectively. When the whole vehicle is parked for charging, the first motor assembly and the second motor assembly are disconnected from the mechanical connection between the wheels through the coupling assembly, and then the power supply mechanism is switched so that the first motor assembly and the second motor assembly respectively operate in corresponding modes. Regardless of the high or low supply voltage, it will not affect the power mechanism from entering the electric mode or the power generation mode, so boost charging or current boost charging can be achieved. When the battery needs to be heated, the first motor assembly is connected to the second motor assembly, and the first motor assembly and the second motor assembly are alternately in the electric mode and the power generation mode, thereby realizing alternating charging and discharging of the battery, realizing the heating function, and meeting different functional requirements.

[0007] In some embodiments, the power supply mechanism includes a power battery, a first switch and a second switch, the positive electrode of the power battery is connected to the first switch, the negative electrode of the power battery is connected to the negative terminal of the second motor assembly, the positive terminal of the second motor assembly is connected between the positive electrode of the power battery and the first switch, the negative terminal of the first motor assembly is connected between the negative electrode of the power battery and the negative terminal of the second motor assembly, and the positive terminal of the first motor assembly is connected to the first switch and the second switch, respectively.

[0008] In the above implementation process, the first switch is connected to the first motor assembly, the second switch is respectively connected to the first motor assembly and the second motor assembly, and the power battery is respectively connected to the first switch and the second motor assembly. When the vehicle is parked for charging, the first motor assembly and the second motor assembly are respectively disconnected from the mechanical connection with the wheels through the coupling assembly. The first motor assembly draws power from the charging pile and operates in an electric form, and the second motor assembly operates in a power generation form. The mechanical energy output by the first motor assembly is converted into electrical energy to charge the power battery, realizing the function of boost charging or boost current charging, meeting different functional requirements, and realizing compatible charging without a charging pile.

[0009] In some embodiments, when the charging mode is executed, the first switch is open and the second switch is closed.

[0010] In the above implementation process, after the first switch is opened and the second switch is closed, the first motor assembly draws power from the charging pile and operates in an electric form, and the second motor assembly operates in a power generation form, converting the mechanical energy output by the first motor assembly into electrical energy to charge the power battery, realizing the function of boost charging or boost current charging, meeting different functional requirements, and realizing compatible charging of different charging piles.

[0011] In some embodiments, the power supply mechanism further includes a DC charging port, a positive terminal of the DC charging port is connected to the second switch, and a negative terminal of the DC charging port is connected to the negative terminal of the second motor assembly.

[0012] In the above implementation process, when the whole vehicle is parked for charging, if the DC charging port is a low-voltage pile and the power battery is a high-voltage battery, boost charging can be achieved by disconnecting the first switch and closing the second switch. If the DC charging port is a high-voltage pile and the power battery is a low-voltage battery, boost charging can be achieved by disconnecting the first switch and closing the second switch, thereby achieving compatible charging of different charging piles and improving convenience.

[0013] In some embodiments, the power supply mechanism includes a first battery pack and a second battery pack, the first battery pack is connected to the first motor assembly, and the second battery pack is connected to the second motor assembly.

[0014] In the above implementation process, when the heating mode needs to be operated, a mechanical connection is established between the first motor assembly and the second motor assembly, the first battery pack can power the first motor assembly, and the second battery pack can power the second motor assembly. The first motor assembly and the second motor assembly are alternately in the electric mode and the power generation mode, thereby realizing the alternating charging and discharging of the first battery pack and the second battery pack, and finally realizing the heating function.

[0015] In some embodiments, the power supply mechanism includes a first battery group, a second battery group, a first switch and a second switch, the first battery group and the second battery group are connected in series to form a positive pole, a negative pole and an intermediate point, the positive pole is connected to the positive terminal of the first motor component, the negative pole is connected to the negative terminal of the second motor component, the first switch is connected to the negative terminal of the first motor component, the second switch is connected to the positive terminal of the second motor component, and when the heating mode is running, the first switch and the second switch are respectively connected to the intermediate point.

[0016] In the above implementation process, the first battery pack is connected in series with the second battery pack, and the power supply of the first motor assembly and the second motor assembly can be selected from the battery pack composed of the first battery pack and the second battery pack, or can be powered by the first battery pack and the second battery pack respectively. In this way, when the first battery pack and the second battery pack need to be heated, it is possible to choose to draw power from the first battery pack and the second battery pack respectively, thereby shunting energy between the first battery pack and the second battery pack to ultimately achieve the heating function. In normal driving status, it is possible to choose to power the entire battery pack to ensure output power and power performance.

[0017] In some embodiments, the first motor component includes a first inverter and a first motor structure, and the first inverter is connected to the first motor structure.

[0018] In some embodiments, the second motor assembly includes a second inverter and a second motor structure, and the second inverter is connected to the second motor structure.

[0019] In some embodiments, the coupling component includes a first gear, a second gear, a clutch, a reducer and a differential, the first gear is connected to the first motor component, and the first gear is meshed with the second gear, the second gear is connected to the second motor component, the clutch connects the second gear and the reducer, and the differential connects the reducer.

[0020] In the above implementation process, the clutch is disconnected, and the first gear is meshed with the second gear, so that the mechanical connection between the first motor assembly and the second motor assembly can be realized, and the mechanical energy can be transmitted in both directions between the first motor assembly and the second motor assembly. After the clutch is closed, the mechanical energy can be transmitted to the wheels, and finally the rotation of the wheels can be realized. At the same time, the differential can realize a large speed ratio transmission, and has a higher transmission efficiency and torque transmission capability.

[0021] In a second aspect, the present application also provides a vehicle comprising a dual-motor power system as described in any one of the above items.

[0022] Since the vehicle provided in the second aspect includes a dual-motor power system, the vehicle has all the technical effects of the dual-motor power system and will not be repeated here.

[0023] Other features and advantages of the present disclosure will be set forth in the following description, or some features and advantages may be inferred or unambiguously determined from the description, or may be learned by implementing the above-mentioned technology of the present disclosure.

[0024] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of a dual-motor power system provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structure of a coupling component of a dual-motor power system provided in an embodiment of the present application;

[0028] Figure 3 A schematic diagram of the structure of the charging mode of the dual-motor power system provided in an embodiment of the present application;

[0029] Figure 4 A structural schematic diagram of a heating mode of a dual-motor power system provided in an embodiment of the present application;

[0030] Figure 5 A structural schematic diagram of another heating mode of the dual-motor power system provided in an embodiment of the present application.

[0031] Reference numerals

[0032] 100. Power mechanism; 101. First motor assembly; 1011. First inverter; 1012. First motor structure; 102. Second motor assembly; 1021. Second inverter; 1022. Second motor structure; 103. Coupling assembly; 1031. First gear; 1032. Second gear; 1033. Clutch; 1034. Speed ​​reducer; 1035. Differential; 200. Power mechanism; 201. Power battery; 202. First switch; 203. Second switch; 204. DC charging port; 205. First battery pack; 206. Second battery pack. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0034] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0035] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0036] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or a point connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0038] Example

[0039] During the design process, the inventor discovered that with the development of the electric vehicle industry, the market has put forward new demands on electric vehicles, including:

[0040] Boost charging: High-end electric vehicles are gradually adopting 800V high-voltage batteries, but there are still many old charging piles on the market whose maximum output voltage is lower than the battery voltage. Therefore, electric vehicles need to use certain technical means to achieve compatible charging with old low-voltage charging piles;

[0041] Boosting charging: For charging piles with a higher maximum output voltage, if the voltage of the electric vehicle power battery is too low, the voltage can only be reduced to the battery voltage to charge the vehicle, and the charging power cannot be fully utilized. At the battery end, the battery charging current is less than the maximum allowable charging current of the battery. Therefore, it is hoped that there will be a certain technical solution that allows the charging pile to charge at a higher output voltage when the battery voltage is lower than the charging pile voltage, thereby increasing the battery charging current;

[0042] Battery AC heating: Power batteries have weak discharge capacity at low temperatures and need to be heated quickly to resume normal use. AC heating is a technology that passes alternating current through the battery to generate Joule heat on the battery's internal resistance to heat the battery. It has the characteristic of fast heating speed and is an important battery rapid heating technology.

[0043] In view of this, if Figure 1-Figure 5As shown, in the first aspect, an embodiment of the present application provides a dual-motor power system, including: a power mechanism 100, including a first motor component 101, a second motor component 102 and a coupling component 103, wherein the coupling component 103 is respectively connected to the first motor component 101 and the second motor component 102, and is used to control the mechanical energy transfer between the two after coupling the first motor component 101 and the second motor component 102; a power supply mechanism 200, which is respectively connected to the first motor component 101 and the second motor component 102 to switch between a charging mode and a heating mode; wherein when the charging mode is operated, the coupling component 103 couples the first motor component 101 and the second motor component 102, and cuts off the mechanical energy output of the two, so that the first motor component 101 operates in an electric form, and the second motor component 102 operates in a power generation form; when the heating mode is operated, the coupling component 103 couples the first motor component 101 and the second motor component 102, so that the first motor component 101 and the second motor component 102 are alternately in the electric form and the power generation form.

[0044] Exemplarily, the first motor assembly 101 and the second motor assembly 102 are connected to the wheels via the coupling assembly, and the power supply mechanism 200 can serve as a power supply structure, respectively connecting the first motor assembly 101 and the second motor assembly 102 to provide electrical energy. Of course, the first motor assembly 101 and the second motor assembly 102 can also convert the recovered mechanical energy into electrical energy to charge the power supply mechanism 200, etc.

[0045] In the above implementation process, the first motor component 101 and the second motor component 102 are coupled through the coupling component 103, and the power supply mechanism 200 is connected to the first motor component 101 and the second motor component 102 respectively. When the whole vehicle is parked for charging, the first motor component 101 and the second motor component 102 are disconnected from the mechanical connection with the wheels through the coupling component 103, and then the power supply mechanism 200 is switched so that the first motor component 101 and the second motor component 102 respectively operate in corresponding modes. Regardless of the high or low supply voltage, it will not affect the power mechanism 100 from entering the electric mode or the power generation mode, so boost charging or current boost charging can be achieved. When the battery needs to be heated, the first motor component 101 is connected to the second motor component 102, and the first motor component 101 and the second motor component 102 are alternately in the electric mode and the power generation mode, thereby realizing the alternating charging and discharging of the battery, realizing the heating function, and meeting different functional requirements.

[0046] like Figure 3As shown, the power supply mechanism 200 includes a power battery 201, a first switch 202 and a second switch 203, the positive electrode of the power battery 201 is connected to the first switch 202, the negative electrode of the power battery 201 is connected to the negative terminal of the second motor assembly 102, the positive terminal of the second motor assembly 102 is connected between the positive electrode of the power battery 201 and the first switch 202, the negative terminal of the first motor assembly 101 is connected between the negative electrode of the power battery 201 and the negative terminal of the second motor assembly 102, and the positive terminal of the first motor assembly 101 is connected to the first switch 202 and the second switch 203 respectively.

[0047] Exemplarily, the power battery 201 is a battery pack, which is installed in the vehicle to provide electrical energy, and the first switch 202 and the second switch 203 are respectively connected to the positive terminal of the first motor assembly 101. Because no matter how high or low the power supply voltage is, it will not affect whether the motor of the power mechanism 100 enters the electric mode or the power generation mode. Therefore, after the first motor assembly 101 draws power from the DC charging pile, it can operate in the electric mode, and the second motor assembly 102 can operate in the power generation mode, ultimately realizing the functions of boost charging and boost current charging.

[0048] In the above implementation process, the first switch 202 is connected to the first motor assembly 101, the second switch 203 is connected to the first motor assembly 101 and the second motor assembly 102 respectively, and the power battery 201 is connected to the first switch 202 and the second motor assembly 102 respectively. When the whole vehicle is parked for charging, the first motor assembly 101 and the second motor assembly 102 are disconnected from the mechanical connection with the wheels through the coupling assembly. The first motor assembly 101 draws power from the charging pile and operates in an electric form, and the second motor assembly 102 operates in a power generation form. The mechanical energy output by the first motor assembly 101 is converted into electrical energy to charge the power battery 201, realizing the function of boost charging or boost current charging, meeting different functional requirements, and realizing compatible charging without a charging pile.

[0049] In some embodiments, when the charging mode is executed, the first switch 202 is opened and the second switch 203 is closed.

[0050] In the above implementation process, after the first switch 202 is disconnected and the second switch 203 is closed, the first motor assembly 101 draws power from the charging pile and operates in an electric form, and the second motor assembly 102 operates in a power generation form, converting the mechanical energy output by the first motor assembly 101 into electrical energy to charge the power battery 201, realizing the function of boost charging or boost current charging, meeting different functional requirements, and realizing compatible charging of different charging piles.

[0051] In some embodiments, the power supply mechanism 200 further includes a DC charging port 204 , a positive terminal of the DC charging port 204 is connected to the second switch 203 , and a negative terminal of the DC charging port 204 is connected to the negative terminal of the second motor assembly 102 .

[0052] In the above implementation process, when the whole vehicle is parked for charging, if the DC charging port 204 is a low-voltage pile and the power battery 201 is a high-voltage battery, boost charging can be achieved by disconnecting the first switch 202 and closing the second switch 203. If the DC charging port 204 is a high-voltage pile and the power battery 201 is a low-voltage battery, boost charging can be achieved by disconnecting the first switch 202 and closing the second switch 203, thereby achieving compatible charging of different charging piles and improving convenience.

[0053] like Figure 4 As shown, the power supply mechanism 200 includes a first battery pack 205 and a second battery pack 206, the first battery pack 205 is connected to the first motor assembly 101, and the second battery pack 206 is connected to the second motor assembly 102, that is, the first battery pack 205 and the second battery pack 206 can be set as independent battery packs. It is worth mentioning that as long as energy exchange is ensured between the first battery pack 205 and the second battery pack 206, AC heating can be achieved. For example, at this time, the first motor assembly 101 can output energy for driving the motor and charging the second battery pack 206 at the same time, and then switch to the second motor assembly 102 outputting energy for driving the motor and charging the first battery pack 205 at the same time. The two modes are alternated, thereby achieving AC heating of the battery while the vehicle is operating normally, without requiring the motor (first motor assembly 101, second motor assembly 102) and the wheel axle to be disconnected.

[0054] In the above-mentioned implementation process, when the heating mode needs to be operated, a mechanical connection is established between the first motor assembly 101 and the second motor assembly 102, the first battery group 205 can power the first motor assembly 101, and the second battery group 206 can power the second motor assembly 102. The first motor assembly 101 and the second motor assembly 102 are alternately in the electric mode and the power generation mode, thereby realizing the alternating charging and discharging of the first battery group 205 and the second battery group 206, and finally realizing the heating function.

[0055] like Figure 5As shown, the power supply mechanism 200 includes a first battery group 205, a second battery group 206, a first switch 202 and a second switch 203. The first battery group 205 and the second battery group 206 are connected in series to form a positive pole, a negative pole and a midpoint. The positive pole is connected to the positive terminal of the first motor component 101, the negative pole is connected to the negative terminal of the second motor component 102, the first switch 202 is connected to the negative terminal of the first motor component 101, and the second switch 203 is connected to the positive terminal of the second motor component 102. When the heating mode is running, the first switch 202 and the second switch 203 are respectively connected to the midpoint.

[0056] In the above implementation process, the first battery pack 205 is connected in series with the second battery pack 206, and the power supply of the first motor assembly 101 and the second motor assembly 102 can be selected from the battery pack composed of the first battery pack 205 and the second battery pack 206, or can be powered by the first battery pack 205 and the second battery pack 206 respectively. In this way, when the first battery pack 205 and the second battery pack 206 need to be heated, it is possible to choose to draw power from the first battery pack 205 and the second battery pack 206 respectively, so that energy is transferred between the first battery pack 205 and the second battery pack 206 to finally realize the heating function. In the normal driving state, it is possible to choose to supply power from the entire battery pack to ensure the output power and the dynamic performance.

[0057] In some embodiments, the first motor assembly 101 includes a first inverter 1011 and a first motor structure 1012, and the first inverter 1011 is connected to the first motor structure 1012. Exemplarily, the first inverter 1011 is a three-phase inverter. When the charging mode is running, the positive terminal of the first inverter 1011 is connected to the first switch 202 and the second switch 203, respectively, and the negative terminal of the first inverter 1011 is connected to the negative electrode of the power battery 201; when the heating mode is running, the positive and negative terminals of the first inverter 1011 are connected to the positive and negative electrodes of the first battery group 205, respectively, or the positive terminal of the first inverter 1011 is connected to the positive pole, and the negative terminal of the first inverter 1011 is connected to the first switch 202 (i.e., corresponding to the scheme of connecting the first battery group 205 and the second battery group 206 in series).

[0058] In some embodiments, the second motor assembly 102 includes a second inverter 1021 and a second motor structure 1022, and the second inverter 1021 is connected to the second motor structure 1022. Exemplarily, the second inverter 1021 includes a three-phase inverter, when the charging mode is running, the positive terminal of the second inverter 1021 is connected between the power battery 201 and the first switch 202, and the negative terminal of the second inverter 1021 is connected to the negative electrode of the power battery 201; when the heating mode is running, the positive and negative terminals of the second inverter 1021 are respectively connected to the positive and negative electrodes of the second battery group 206, or the positive terminal of the second inverter 1021 is connected to the second switch 203, and the negative terminal of the second inverter 1021 is connected to the negative pole (i.e., corresponding to the scheme in which the first battery group 205 and the second battery group 206 are connected in series).

[0059] like Figure 2 As shown, the coupling assembly includes a first gear 1031, a second gear 1032, a clutch 1033, a reducer 1034 and a differential 1035, the first gear 1031 is connected to the first motor assembly 101, and the first gear 1031 is meshed with the second gear 1032, the second gear 1032 is connected to the second motor assembly 102, the clutch 1033 is connected to the second gear 1032 and the reducer 1034, the differential 1035 is connected to the reducer 1034, and the differential 1035 is connected to the wheels for transmitting torque to the wheels.

[0060] In the above-mentioned implementation process, the clutch 1033 is disconnected, and the first gear 1031 is meshed with the second gear 1032, so as to realize the mechanical connection between the first motor assembly 101 and the second motor assembly 102, and complete the bidirectional transmission of mechanical energy between the first motor assembly 101 and the second motor assembly 102. After the clutch 1033 is closed, the mechanical energy can be transmitted to the wheels, and finally the rotation of the wheels can be realized. At the same time, the differential 1035 can realize a large speed ratio transmission, and has a higher transmission efficiency and torque transmission capability.

[0061] In a second aspect, the present application also provides a vehicle comprising the dual-motor power system as described above.

[0062] Since the vehicle provided in the second aspect includes a dual-motor power system, the vehicle has all the technical effects of the dual-motor power system and will not be repeated here.

[0063] In all the embodiments of the present application, "big" and "small" are relative, "more" and "less" are relative, and "up" and "down" are relative. The expressions of such relative terms are not elaborated in the embodiments of the present application.

[0064] It should be understood that the "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in this embodiment", "in the embodiment of the present application" or "as an optional implementation" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required for the present application.

[0065] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the above-mentioned processes does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0066] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A dual-motor power system, characterized in that: include: A power mechanism, comprising a first motor assembly, a second motor assembly and a coupling assembly, wherein the coupling assembly is respectively connected to the first motor assembly and the second motor assembly, and is used to control the mechanical energy transmission between the first motor assembly and the second motor assembly after coupling the first motor assembly and the second motor assembly; A power supply mechanism, which is respectively connected to the first motor assembly and the second motor assembly to switch between a charging mode and a heating mode; When the charging mode is operated, the coupling component couples the first motor component and the second motor component and cuts off the mechanical energy output of the two, so that the first motor component operates in an electric form and the second motor component operates in a power generation form; when the heating mode is operated, the coupling component couples the first motor component and the second motor component, so that the first motor component and the second motor component are alternately in the electric form and the power generation form.

2. The dual-motor power system according to claim 1, characterized in that: The power supply mechanism includes a power battery, a first switch and a second switch, the positive electrode of the power battery is connected to the first switch, the negative electrode of the power battery is connected to the negative terminal of the second motor assembly, the positive terminal of the second motor assembly is connected between the positive electrode of the power battery and the first switch, the negative terminal of the first motor assembly is connected between the negative electrode of the power battery and the negative terminal of the second motor assembly, and the positive terminal of the first motor assembly is connected to the first switch and the second switch respectively.

3. The dual-motor power system according to claim 2, characterized in that: When the charging mode is executed, the first switch is opened and the second switch is closed.

4. The dual-motor power system according to claim 2, characterized in that: The power supply mechanism further includes a DC charging port, a positive terminal of the DC charging port is connected to the second switch, and a negative terminal of the DC charging port is connected to the negative terminal of the second motor assembly.

5. The dual-motor power system according to claim 1, characterized in that: The power supply mechanism includes a first battery group and a second battery group, the first battery group is connected to the first motor assembly, and the second battery group is connected to the second motor assembly.

6. The dual-motor power system according to claim 1, characterized in that: The power supply mechanism includes a first battery group, a second battery group, a first switch and a second switch. The first battery group and the second battery group are connected in series to form a positive pole, a negative pole and an intermediate point. The positive pole is connected to the positive terminal of the first motor component, the negative pole is connected to the negative terminal of the second motor component, the first switch is connected to the negative terminal of the first motor component, and the second switch is connected to the positive terminal of the second motor component. When the heating mode is running, the first switch and the second switch are respectively connected to the intermediate point.

7. The dual-motor power system according to claim 1, characterized in that: The first motor component includes a first inverter and a first motor structure, and the first inverter is connected to the first motor structure.

8. The dual-motor power system according to claim 1, characterized in that: The second motor assembly includes a second inverter and a second motor structure, and the second inverter is connected to the second motor structure.

9. The dual-motor power system according to any one of claims 1 to 8, characterized in that: The coupling assembly includes a first gear, a second gear, a clutch, a reducer and a differential, the first gear is connected to the first motor assembly, and the first gear is meshed with the second gear, the second gear is connected to the second motor assembly, the clutch is connected to the second gear and the reducer, and the differential is connected to the reducer.

10. A vehicle, characterized in that: Comprising a dual-motor power system as described in any one of claims 1-9.

Images