Electric torque converter and vehicle
By using electric torque converters in vehicles and using the combined transmission of planetary gear sets and motors, the problem of low power transmission efficiency caused by the torque converter is solved, and more efficient energy utilization and power transmission are achieved.
Patent Information
- Application Number
- CN202421839326.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The torque converter has a large hydraulic loss during operation, resulting in a low power transmission efficiency of the vehicle.
An electric torque converter is adopted, including a planetary gear set, a motor and a clutch, and through the combination of gear transmission and motor transmission, torque adjustment between the power output terminal and the transmission is achieved.
It reduces power loss, improves transmission efficiency, saves energy, and further improves the torque increase effect and energy utilization through the kinetic energy exchange between the motor and the planetary gear set.
Smart Images
Figure CN222782955U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of vehicle technology, and in particular to an electric torque converter and a vehicle. Background Art
[0002] At present, heavy-duty vehicles such as hydraulic loaders and hydraulic bulldozers use a hydraulic torque converter and a gearbox to form a dual-variator assembly to transmit the power output of the engine to the wheel side.
[0003] However, the hydraulic torque converter has a large hydraulic loss when working, and even if the hydraulic torque converter works at the high efficiency point, its transmission efficiency is only about 85%, and the energy loss is relatively large. As a result, the power transmission efficiency of the vehicle is relatively low. Utility Model Content
[0004] The present application provides an electric torque converter and a vehicle to improve the problem of low power transmission efficiency of the vehicle.
[0005] The specific technical solutions are as follows:
[0006] In a first aspect, the present application provides an electric torque converter connected between a power output end of a vehicle and a transmission. The electric torque converter comprises: a planetary gear set, comprising a sun gear, a ring gear and a planet carrier, one of the sun gear and the ring gear being used to connect to the power output end of the vehicle, and the planet carrier being connected to the input end of the transmission; a motor, the other of the sun gear and the ring gear being connected to the motor, the motor being configured to provide kinetic energy to the planetary gear set or receive kinetic energy from the planetary gear set; and a clutch, the clutch being capable of unlocking or locking the planetary gear set.
[0007] The electric torque converter of the present application can realize the torque adjustment function between the power output end of the vehicle and the transmission under the joint action of the planetary gear set and the motor. Due to the combination of gear transmission and motor transmission, compared with the hydraulic torque converter, the power loss between the power output end of the vehicle and the transmission is reduced, and the transmission efficiency is greatly improved, which is conducive to improving the power transmission efficiency of the vehicle, and then to saving energy. In addition, the motor can provide kinetic energy to the planetary gear set or receive kinetic energy from the planetary gear set. In this way, on the one hand, it is conducive to further improving the torque-increasing effect of the electric torque converter. On the other hand, it can further reduce energy loss and further improve energy utilization.
[0008] In some embodiments, the electric torque converter has a first torque mode and a second torque mode;
[0009] When the electric torque converter is in the first torque mode, the clutch locks the planetary gear set, and the motor receives kinetic energy from the power output end through the planetary gear set to convert the kinetic energy into electrical energy;
[0010] When the electric torque converter is in the second torque mode, the clutch unlocks the planetary gear set, and the motor transfers kinetic energy to the planetary gear set, so that the motor and the power output end transfer kinetic energy to the input end of the transmission through the planetary gear set.
[0011] In some embodiments, the electric torque converter further has a third torque mode, and the electric machine is further configured to lock the other of the sun gear and the ring gear;
[0012] When the electric torque converter is in the third torque mode, the clutch unlocks the planetary gear set, and the motor locks the other of the sun gear and the ring gear, so that the power output end transmits kinetic energy to the input end of the transmission through the planetary gear set.
[0013] In some embodiments, the electric torque converter further includes an electric storage element, which is electrically connected to the motor to supply power to the motor or receive electric energy from the motor.
[0014] In some embodiments, the energy storage element is a battery or a capacitor.
[0015] In some embodiments, the electric torque converter further includes a controller, and the controller is electrically connected to the clutch and the motor.
[0016] In some embodiments, the electric torque converter further includes a speed sensor, which is used to detect the speed of the planet carrier, and the speed sensor is electrically connected to the controller.
[0017] In some embodiments, the clutch is disposed between the sun gear and the ring gear.
[0018] In some embodiments, the clutch is disposed between the sun gear and the planet carrier.
[0019] In some embodiments, the clutch is disposed between the planet carrier and the ring gear.
[0020] In some embodiments, the ring gear is used to connect to the power output end of the vehicle, and the sun gear is connected to the output end of the motor;
[0021] The clutch is arranged between the sun gear and the planet carrier.
[0022] In a second aspect, the present application proposes a vehicle comprising a power output device, a transmission and the electric torque converter described in the first aspect, wherein one of the sun gear and the ring gear is connected to the output end of the power output device, and the planetary carrier is connected to the input end of the transmission. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 A simplified schematic diagram of a power transmission route of a vehicle provided in one embodiment of the present application;
[0024] Figure 2 A simplified structural schematic diagram of an electric torque converter provided in one embodiment of the present application;
[0025] Figure 3 A simplified structural schematic diagram of another electric torque converter provided in an embodiment of the present application.
[0026] The description of the reference numerals in the figures is as follows:
[0027] 1-vehicle, 10-electric torque converter, 11-power output device, 11a-power output end, 12-transmission;
[0028] 100- planetary gear set, 110- sun gear, 120- ring gear, 130- planet carrier, 140- planet gear;
[0029] 200-motor, 210-stator, 220-rotor;
[0030] 300-clutch;
[0031] 400-Electricity storage element. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0033] In the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0035] In the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0036] As described in the background technology, heavy-duty vehicles such as hydraulic loaders and hydraulic bulldozers use a hydraulic torque converter and a gearbox to form a dual-variable assembly to transmit the power output of the engine to the wheel side. The hydraulic torque converter realizes the transmission and conversion of torque through hydraulic transmission, which causes a large hydraulic loss when the hydraulic torque converter is working. Even if the hydraulic torque converter works at the high efficiency point, its transmission efficiency is only about 85%, which makes the power transmission efficiency of the vehicle low, which is not conducive to energy saving.
[0037] Based on the above problems, the embodiments of the present application propose an electric torque converter and a vehicle to improve the problem of low power transmission efficiency of the vehicle, thereby facilitating energy saving.
[0038] In a first aspect, the present application provides an electric torque converter 10. Figure 1 and Figure 2 As shown, the electric torque converter 10 is connected between the power output end 11a of the vehicle 1 and the transmission 12. The electric torque converter 10 includes a planetary gear set 100, a motor 200 and a clutch 300. The planetary gear set 100 includes a sun gear 110, a ring gear 120 and a planet carrier 130. One of the sun gear 110 and the ring gear 120 is used to be connected to the power output end 11a of the vehicle, and the planet carrier 130 is connected to the input end of the transmission 12. The other of the sun gear 110 and the ring gear 120 is connected to the output end of the motor 200. The motor 200 is configured to provide kinetic energy to the planetary gear set 100 or receive kinetic energy from the planetary gear set 100. The clutch 300 can unlock or lock the planetary gear set 100.
[0039] In the present application, an electric torque converter 10 is used to replace the hydraulic torque converter in the related art. Specifically, the electric torque converter 10 of the present application includes a planetary gear set 100, a motor 200 and a clutch 300. Figure 2 As shown, the planetary gear set 100 is a planetary row structure, and the planetary gear set 100 includes a sun gear 110, a ring gear 120 and a planet carrier 130. Generally, the planetary gear set 100 also includes a planetary gear 140 rotatably connected to the planet carrier 130, and the planetary gear 140 is meshed with the sun gear 110 and the ring gear 120 respectively. The sun gear 110 is a pinion gear at the center, and the planetary gear 140 is a pinion gear that rotates around the sun gear 110. The planetary carrier 130 carries the planetary gear 140, and the planetary carrier 130 can make the planetary gear 140 rotate around its own axis, and the planetary carrier 130 can also rotate around the center of the sun gear 110 as a whole. The ring gear 120 surrounds the planetary gear 140 and the sun gear 110, and the rotation centers of the ring gear 120, the sun gear 110 and the planet carrier 130 are all located on the same axis.
[0040] One of the sun gear 110 and the ring gear 120 is used to connect to the power output end 11a of the vehicle, the other of the sun gear 110 and the ring gear 120 is connected to the output end of the motor 200, and the planet carrier 130 is connected to the input end of the transmission 12. Thus, a power transmission route from the power output end of the vehicle to the transmission 12 is constructed. Optionally, as Figure 1 and Figure 2 As shown, the sun gear 110 is connected to the motor 200, and the ring gear 120 is connected to the power output end 11a of the vehicle. Figure 3 As shown, the sun gear 110 is connected to the power output end 11 a of the vehicle, and the ring gear 120 is connected to the motor 200 .
[0041] The motor 200 is a structure for realizing mutual conversion between electrical energy and mechanical energy. In the present application, the motor 200 can be used as an electric motor to provide kinetic energy, and can also be used as a generator to convert the kinetic energy of the power output end 11a of the vehicle 1 received by the planetary gear set 100 into electrical energy. Optionally, the motor 200 includes a stator 210 and a rotor 220, and the other of the sun gear 110 and the ring gear 120 is connected to the rotor 220 of the motor 200.
[0042] The clutch 300 is configured to unlock or lock the planetary gear set 100. The clutch 300 may be, for example, a mechanical clutch, an electromagnetic clutch, etc. When the clutch 300 locks the planetary gear set 100, the planetary gear set 100 rotates as a whole under the action of the power output end 11a of the vehicle. At this time, the transmission ratio between the power output end 11a of the vehicle and the input end of the transmission 12 is 1. When the clutch 300 does not lock the planetary gear set 100, the planetary gear set 100 can be placed in a torque-increasing state according to the operating state of the motor 200. Thus, the electric torque converter 10 of the present application can realize the function of torque regulation.
[0043] The electric torque converter 10 of the present application can realize the torque adjustment function between the power output end 11a of the vehicle and the transmission 12 under the joint action of the planetary gear set 100 and the motor 200. Due to the combination of gear transmission and motor transmission, compared with the hydraulic torque converter, the power loss between the power output end of the vehicle and the transmission 12 is reduced, and the transmission efficiency is greatly improved, which is conducive to improving the power transmission efficiency of the vehicle, and then to saving energy. In addition, the motor 200 can provide kinetic energy to the planetary gear set 100 or receive the kinetic energy of the planetary gear set 100. In this way, on the one hand, the motor 200 can be used as the input end of the planetary gear set 100 at the same time, that is, the planetary gear set 100 is in a state of two input ends and one output end, which is conducive to further improving the torque increase effect of the electric torque converter 10. On the other hand, after the motor 200 receives the kinetic energy of the planetary gear set 100, the kinetic energy can be converted into electrical energy for use, thereby further reducing energy loss and further improving energy utilization.
[0044] In some embodiments, the electric torque converter 10 has a first torque mode and a second torque mode. When the electric torque converter 10 is in the first torque mode, the clutch 300 locks the planetary gear set 100, and the motor 200 receives the kinetic energy of the power output end 11a through the planetary gear set 100 to convert the kinetic energy into electrical energy. When the electric torque converter 10 is in the second torque mode, the clutch 300 unlocks the planetary gear set 100, and the motor 200 transmits kinetic energy to the planetary gear set 100, so that the motor 200 and the power output end 11a transmit kinetic energy to the input end of the transmission 12 through the planetary gear set 100.
[0045] This embodiment proposes one of the torque conversion modes of the electric torque converter 10. Specifically, the electric torque converter 10 can switch between a first torque mode and a second torque mode. When the electric torque converter 10 is in the first torque mode, the clutch 300 locks the planetary gear set 100. In this case, on the one hand, the transmission ratio of the planetary gear set 100 is 1, and the planetary gear set 100 rotates as a whole, so that the power at the power output end of the vehicle can be directly transmitted to the transmission 12 to ensure the normal operation of the vehicle. At the same time, since the motor 200 is connected to one of the sun gear 110 and the ring gear 120, the planetary gear set 100 can also transmit power to the motor 200, and the motor 200 can be used as a generator to generate electrical energy, which can be supplied to other components of the vehicle, which is also conducive to improving the energy utilization rate of the vehicle. It is easy to understand that the first torque mode is a low-load torque mode with direct torque transmission.
[0046] When the electric torque converter 10 is in the second torque mode, the clutch 300 does not lock the planetary gear set 100. In this case, the motor 200 transmits kinetic energy to the planetary gear set 100, and the power output end 11a also transmits kinetic energy to the planetary gear set 100, which is equivalent to the input end of the planetary gear set 100 being both the sun gear 110 and the ring gear 120, and the output end being the planetary carrier 130. The transmission ratio of the planetary gear set 100 is greater than 1, thereby realizing the torque adjustment function of the electric torque converter 10. In addition, the motor 200 can adjust the output torque and speed of the components connected thereto, so that the output torque of the electric torque converter 10 in the second torque mode can also be flexibly adjusted. As a result, it is also beneficial to improve the convenience of torque adjustment of the electric torque converter 10. It is easy to understand that the second torque mode is a high load torque mode.
[0047] In some embodiments, the electric torque converter 10 also has a third torque mode, and the motor 200 is further configured to lock the other of the sun gear 110 and the ring gear 120. When the electric torque converter 10 is in the third torque mode, the clutch 300 unlocks the planetary gear set 100, and the motor 200 locks the other of the sun gear 110 and the ring gear 120, so that the power output end 11a transmits kinetic energy to the input end of the transmission 12 through the planetary gear set 100.
[0048] This embodiment proposes another torque conversion method of the electric torque converter 10. The motor 200 locks the other of the sun gear 110 and the ring gear 120, which means that if the sun gear 110 is connected to the motor 200, the motor 200 locks the sun gear 110, and the sun gear 110 is in a fixed state; if the ring gear 120 is connected to the motor 200, the motor 200 locks the ring gear 120, and the ring gear 120 is in a fixed state.
[0049] Furthermore, when the electric torque converter 10 is in the third torque mode, the clutch 300 unlocks the planetary gear set 100, and the motor 200 locks the sun gear 110 or the ring gear 120. That is, in this embodiment, among the sun gear 110, the ring gear 120 and the planetary carrier 130 equivalent to the planetary gear set 100, the planetary carrier 130 is the output end, one of the ring gear 120 and the planetary carrier 130 is fixed, and the other is the input end. In this way, the transmission ratio of the planetary gear set 100 is also greater than 1, and the electric torque converter 10 is also in a torque-increasing state. As a result, the electric torque converter 10 can also realize the function of torque regulation.
[0050] It is easy to understand that when the electric torque converter 10 is in the third torque mode, the magnitude of its output torque is determined by the transmission ratio of the planetary gear set 100. When the electric torque converter 10 is in the second torque mode, the magnitude of its output torque is determined by both the transmission ratio of the planetary gear set 100 and the output torque of the motor 200.
[0051] Optionally, the motor 200 can lock the sun gear 110 or the ring gear 120 in a variety of ways. For example, the motor 200 itself has a self-locking structure, and a brake module is provided in the motor 200. When the power is off, the brake module can lock the output shaft of the motor 200 so that it does not rotate, thereby achieving the locking of the sun gear 110 or the ring gear 120 by the motor 200. Alternatively, the motor 200 can be connected to the sun gear 110 or the ring gear 120 through an additionally provided locking structure, thereby achieving the locking of the sun gear 110 or the ring gear 120 by the motor 200 through an external locking structure, and the present application does not limit this.
[0052] In some embodiments, Figures 1 to 3 As shown, the electric torque converter 10 further includes an electric storage element 400 , which is electrically connected to the motor 200 to supply power to the motor 200 or receive electric energy from the motor 200 .
[0053] In this embodiment, when the planetary gear set 100 transfers kinetic energy to the motor 200, the motor 200 can convert the kinetic energy into electrical energy and transfer it to the energy storage element 400, and the energy storage element 400 can store the electrical energy. When the motor 200 transfers kinetic energy to the planetary gear set 100 as an electric motor, the energy storage element 400 can be used as a power source to provide electrical energy to the motor 200. As a result, the electrical energy of the energy storage element 400 can be stored by the power source of the vehicle, so that there is no need to set up an additional power supply device to supply power to the motor 200, which is conducive to improving the energy utilization rate of the vehicle 1.
[0054] Optionally, the electricity storage element 400 is a battery or a capacitor. Both batteries and capacitors can store and release electrical energy.
[0055] In some embodiments, the electric torque converter 10 further includes a controller (not shown in the figure), which is electrically connected to the clutch 300 and the motor 200. By providing the controller, the operating states of the clutch 300 and the motor 200 can be automatically controlled by a switch signal, thereby enabling the electric torque converter 10 to switch between multiple torque modes, thereby facilitating the improvement of the intelligence and automation of the electric torque converter 10.
[0056] In some embodiments, the electric torque converter 10 further includes a speed sensor (not shown in the figure), which is used to detect the speed of the planet carrier 130 , and the speed sensor is electrically connected to the controller.
[0057] In this embodiment, the electric torque converter 10 is further provided with a speed sensor. The speed sensor can monitor the speed of the planetary carrier 130, that is, the output speed of the electric torque converter 10. When the vehicle's workload is small, the controller controls the clutch 300 to lock the planetary gear set 100, so that the electric torque converter 10 operates with a transmission ratio of 1. At this time, the motor 200 is used as a generator to convert the vehicle's extra kinetic energy into electrical energy and supply the storage element 400 to store electrical energy. The electric torque converter 10 is in the first torque mode.
[0058] When the speed sensor detects that the speed of the planetary carrier 130 decreases, it indicates that the workload of the vehicle increases. In this case, the controller controls the clutch 300 to unlock the planetary gear set 100. At this time, the power storage element 400 serves as the power source of the motor 200 and supplies power to the motor 200. Optionally, the motor 200 can be used as an electric motor to provide kinetic energy to the planetary gear set 100, so that the electric torque converter 10 is in the second torque mode. The motor 200 can lock the components connected to it in the planetary gear set 100, so that the electric torque converter 10 is in the third torque mode. As a result, the electric torque converter 10 realizes the torque conversion function, which is conducive to further improving the automation and intelligence of the operation of the electric torque converter 10.
[0059] In some embodiments, the clutch 300 is disposed between the sun gear 110 and the ring gear 120. Alternatively, the clutch 300 is disposed between the sun gear 110 and the planetary carrier 130. Alternatively, the clutch 300 is disposed between the planetary carrier 130 and the ring gear 120. In the above-mentioned multiple structures, when the clutch 300 is engaged, the overall locking of the planetary gear set 100 can be achieved, which is conducive to improving the convenience of the clutch 300.
[0060] In a specific embodiment, Figure 1 and Figure 2As shown, the ring gear 120 is used to connect with the power output end 11a of the vehicle, the sun gear 110 is connected with the output end of the motor 200, and the clutch 300 is arranged between the sun gear 110 and the planetary carrier 130. This embodiment proposes a specific way of connecting the motor 200, the planetary gear set 100 and the clutch 300, thereby enabling the electric torque converter 10 of the present application to replace the hydraulic torque converter in the related art to realize the torque conversion function, thereby facilitating the improvement of the power transmission efficiency of the vehicle and further facilitating energy saving.
[0061] Second, as Figure 1 As shown, the present application proposes a vehicle 1, comprising a power output device 11, a transmission 12 and the electric torque converter 10 described in the first aspect, one of the sun gear 110 and the ring gear 120 is connected to the output end of the power output device 11, and the planetary carrier 130 is connected to the input end of the transmission 12.
[0062] The vehicle 1 of the present application uses the electric torque converter 10 described in the first aspect, and adopts a combination of gear transmission and motor transmission. Compared with the hydraulic torque converter, the power loss between the power output end of the vehicle and the transmission 12 is reduced, and the transmission efficiency is greatly improved, which is conducive to improving the power transmission efficiency of the vehicle 1, and then to saving energy. In addition, the motor 200 can provide kinetic energy to the planetary gear set 100 or receive kinetic energy from the planetary gear set 100. In this way, on the one hand, it is conducive to further improving the torque-increasing effect of the electric torque converter 10. On the other hand, it can further reduce energy loss and further improve energy utilization.
[0063] Optionally, the power output device 11 may be an internal combustion engine, an electric motor, etc., which is not limited in the present application. The vehicle 1 may be, for example, a fuel vehicle, a new energy vehicle, etc., which is not limited in the present application.
[0064] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the 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. An electric torque converter connected between the power output end and the transmission of a vehicle, characterized in that: The electric torque converter comprises: A planetary gear set, comprising a sun gear, a ring gear and a planet carrier, wherein one of the sun gear and the ring gear is used to be connected to a power output end of the vehicle, and the planet carrier is connected to an input end of the transmission; a motor, the other of the sun gear and the ring gear being connected to the motor, the motor being configured to provide kinetic energy to the planetary gear set or receive kinetic energy from the planetary gear set; and A clutch is capable of unlocking or locking the planetary gear set.
2. The electric torque converter according to claim 1, characterized in that: The electric torque converter has a first torque mode and a second torque mode; When the electric torque converter is in the first torque mode, the clutch locks the planetary gear set, and the motor receives kinetic energy from the power output end through the planetary gear set to convert the kinetic energy into electrical energy; When the electric torque converter is in the second torque mode, the clutch unlocks the planetary gear set, and the motor provides kinetic energy to the planetary gear set, so that the motor and the power output end transmit kinetic energy to the input end of the transmission through the planetary gear set.
3. The electric torque converter according to claim 2, characterized in that: The electric torque converter also has a third torque mode, and the electric machine is further configured to lock the other of the sun gear and the ring gear; When the electric torque converter is in the third torque mode, the clutch unlocks the planetary gear set, and the motor locks the other of the sun gear and the ring gear, so that the power output end transmits kinetic energy to the input end of the transmission through the planetary gear set.
4. The electric torque converter according to claim 1, characterized in that: The electric torque converter further includes an electric storage element, which is electrically connected to the motor to supply power to the motor or receive electric energy from the motor.
5. The electric torque converter according to claim 4, characterized in that: The electricity storage element is a battery or a capacitor.
6. The electric torque converter according to claim 1, characterized in that: The electric torque converter further includes a controller, and the controller is electrically connected to the clutch and the motor.
7. The electric torque converter according to claim 6, characterized in that: The electric torque converter further includes a rotation speed sensor, which is used to detect the rotation speed of the planet carrier, and the rotation speed sensor is electrically connected to the controller.
8. The electric torque converter according to claim 1, characterized in that: The clutch is arranged between the sun gear and the ring gear; Alternatively, the clutch is disposed between the sun gear and the planet carrier; Alternatively, the clutch is arranged between the planet carrier and the ring gear.
9. The electric torque converter according to claim 1, characterized in that: The ring gear is used to be connected to the power output end of the vehicle, and the sun gear is connected to the output end of the motor; The clutch is arranged between the sun gear and the planet carrier.
10. A vehicle, characterized in that: It comprises a power output device, a transmission and an electric torque converter as claimed in any one of claims 1 to 9, wherein one of the sun gear and the ring gear is connected to the output end of the power output device, and the planet carrier is connected to the input end of the transmission.