Drive system and vehicle

Abstract

This application belongs to the field of vehicle technology, specifically relating to drive systems and vehicles. The drive system includes a first drive unit connected to an engine, comprising a step-up transformer, a first motor controller, and a first motor assembly. The step-up transformer is connected to the first motor controller, and the first motor controller is connected to the first motor assembly. A second drive unit includes a second motor controller and a second motor assembly, with the second motor controller connected to the second motor assembly. A power battery is electrically connected to both the first and second drive units. Based on the operating mode of the drive system, the step-up transformer is controlled to switch between an off and on state. In this application, the vehicle can be driven without a step-up transformer in pure electric mode, reducing component losses associated with the step-up transformer and increasing the pure electric driving range. Using a step-up transformer can reduce motor size, lower costs, and reduce vehicle weight, achieving overall fuel efficiency.

Description

Technical Field

[0001] This application belongs to the field of vehicle technology, specifically relating to a drive system and a vehicle. Background Technology

[0002] With economic development and technological progress, automobiles not only serve as a means of transportation in our fast-paced, high-efficiency lives, but also as a second mobile home in people's minds. Therefore, cars are becoming increasingly functional, with higher demands for intelligence, comfort, and power. At the same time, the growth in vehicle ownership, the depletion of fossil fuels, and the deterioration of the atmospheric environment have brought about a series of social problems. The government's formulation of emission regulations, the promulgation of incentive policies, and the development of long-term plans to vigorously promote the development of clean and renewable energy present a significant opportunity for the new energy vehicle industry. Meanwhile, the continuous deterioration of the living environment has also awakened people's awareness of energy conservation and environmental protection, directly driving the development of the new energy vehicle market. Given the inadequate supporting infrastructure and short driving range, the widespread adoption of pure electric vehicles is still some time away. Therefore, hybrid vehicles have emerged and gained widespread popularity, with major automakers actively developing related systems.

[0003] Among them, the transformer electric drive technology in hybrid vehicles can reduce the size of the motor and improve the efficiency of the motor to achieve the effect of saving fuel for the whole vehicle. It is now being increasingly used in hybrid vehicles.

[0004] However, under certain operating modes, although the step-up transformer can optimize motor efficiency by selecting the optimal operating voltage, the addition of the step-up transformer in the entire circuit will bring certain losses and reduce the overall fuel-saving effect of the vehicle. Summary of the Invention

[0005] The purpose of this application is to provide a drive system and vehicle that can reduce the size of the motor, improve the efficiency of the motor, and achieve fuel saving for the whole vehicle.

[0006] The first aspect of this application provides a driving system, including:

[0007] engine;

[0008] A first drive unit is connected to the engine. The first drive unit includes a step-up transformer, a first motor controller, and a first motor set. The step-up transformer is connected to the first motor controller, and the first motor controller is connected to the first motor set.

[0009] The second drive device includes a second motor controller and a second motor set, wherein the second motor controller is connected to the second motor set;

[0010] The power battery is electrically connected to the first drive device and the second drive device;

[0011] According to the operating mode of the drive system, the step-up transformer is controlled to switch between the off state and the on state.

[0012] In one exemplary embodiment of this application, when the drive system is operating in pure electric drive mode, the power battery charge is greater than a preset charge threshold, and the accelerator pedal opening is less than a preset pedal opening, the boost transformer is controlled to be in a closed state, and the second drive device is driven in pure electric mode.

[0013] In one exemplary embodiment of this application, when the drive system is operating in parallel drive mode, the power battery charge is greater than a preset charge threshold, the accelerator pedal opening is greater than a preset pedal opening, and the vehicle speed is greater than a preset vehicle speed threshold, the boost transformer is in a closed state, the first drive device is driven in parallel mode, and the second drive device is driven in pure electric mode.

[0014] In one exemplary embodiment of this application, when the drive system is operating in series drive mode, the power battery has a charge greater than a preset charge threshold, the boost transformer is in the on state, the first drive device is driven in series mode, and the second drive device is driven purely electric.

[0015] In one exemplary embodiment of this application, when the drive system is operating in series drive mode, the power battery charge is less than a preset charge threshold, the boost transformer is in the on state, and the first drive device is driven in series mode.

[0016] In one exemplary embodiment of this application, the power battery and the step-up transformer are electrically connected via a DC high-voltage line; the power battery and the second motor controller are electrically connected via a DC high-voltage line.

[0017] In one exemplary embodiment of this application, the boost transformer and the first motor controller are connected in parallel to the power battery. When the boost transformer is in the off state, the first motor group is driven by pure electric power alone, or the second motor group is driven by pure electric power alone, or the first motor group and the second motor group are driven by pure electric power together.

[0018] In one exemplary embodiment of this application, the first motor set includes a first drive motor and a generator, the first motor controller is a dual-motor controller, the dual-motor controller is electrically connected to the first drive motor and the generator, the generator is electrically connected to the power battery, or both the generator and the first drive motor are electrically connected to the power battery.

[0019] In one exemplary embodiment of this application, the first motor assembly includes a first drive motor, the first motor controller is a single motor controller, the first motor controller is electrically connected to the first drive motor, and the first drive motor is electrically connected to the power battery.

[0020] In one exemplary embodiment of this application, the second motor assembly includes a second drive motor, the second motor controller is a single motor controller, and the second motor controller is electrically connected to the second drive motor.

[0021] In one exemplary embodiment of this application, the boost transformer is connected in series between the power battery and the first motor controller. When the boost transformer is in the off state, the first motor set is not driven, and the second motor set is driven solely by pure electric power.

[0022] A second aspect of this application provides a vehicle comprising the drive system described in any of the preceding claims.

[0023] The proposed solution has the following beneficial effects:

[0024] This application includes a drive system and a vehicle. The drive system comprises an engine, a first drive unit, a second drive unit, and a power battery. The first drive unit is connected to the engine and includes a step-up transformer, a first motor controller, and a first motor assembly. The step-up transformer is connected to the first motor controller, which in turn is connected to the first motor assembly, controlling the operating state of the first motor assembly. One end of the power battery is connected to the step-up transformer, and the other end is connected to the second motor controller in the second drive unit. The second motor controller is in turn connected to the second motor assembly, allowing the second motor assembly to be driven by the power battery. Depending on the operating mode of the drive system, the step-up transformer is controlled to switch between an off and on state. The second motor assembly can drive the vehicle under the action of the power battery, thus reducing the need for the power battery to pass through the step-up transformer before controlling the first motor assembly. In other words, in pure electric mode, the vehicle can be driven without passing through the step-up transformer, reducing component losses associated with the step-up transformer and increasing the pure electric driving range (D). Furthermore, the use of a step-up transformer in this application reduces motor size, lowers costs, reduces vehicle weight, and improves motor efficiency, achieving overall fuel savings.

[0025] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0028] Figure 1 A schematic diagram of the structural block of the power system provided in Embodiment 1 or Embodiment 2 of this application is shown.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100. Engine; 200. First drive unit; 201. Transformer; 202. First motor controller; 203. First drive motor; 204. Generator; 300. Power battery; 400. Second drive unit; 401. Second motor controller; 402. Second motor set. Detailed Implementation

[0031] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0032] In 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0035] Example 1

[0036] Embodiment 1 of this application provides a drive system applied to a vehicle. See also... Figure 1 As shown, this drive system includes:

[0037] Engine 100;

[0038] A first drive unit 200 is connected to an engine 100. The first drive unit 200 includes a step-up transformer 201, a first motor controller 202, and a first motor assembly. The step-up transformer 201 is connected to the first motor controller 202, and the first motor controller 202 is connected to the first motor assembly.

[0039] The power battery 300 has one end connected to the step transformer 201 in the first drive device 200, and the other end connected to the second motor controller 401 described below.

[0040] The second drive device 400 includes a second motor controller 401 and a second motor assembly 402. One end of the second motor controller 401 is connected to the second motor assembly 402, and the other end of the second motor controller 401 is connected to the power battery 300. That is, the second motor controller 401 can control the working state of the second motor assembly 402 according to the power battery 300.

[0041] The system controls the transformer 201 to switch between a closed state and an open state according to the working mode of the drive system. In addition, the second motor set 402 can drive the vehicle under the action of the power battery 300. This drive system includes a pure electric drive mode, that is, the electrical energy output by the power battery 300 can be transmitted to the second motor set 402 through the second motor controller 401, and the second motor set 402 drives the rear wheels to drive the vehicle.

[0042] In other words, when this drive system is in pure electric operating mode, it can achieve pure electric mode through the power battery 300 and the second drive device 400, and control the step-up transformer 201 to be in the off state, instead of using the power battery 300, step-up transformer 201, first motor controller 202 and first motor set to achieve pure electric mode. This reduces the operation of step-up transformer 201, avoids the component losses caused by step-up transformer 201, achieves fuel saving effect for the whole vehicle, and increases pure electric driving range.

[0043] Understandably, this transformer 201 allows for a reduction in the size of the motor in the first motor unit while maintaining the same power requirements, thereby lowering costs and reducing vehicle weight. Furthermore, it improves motor efficiency, resulting in overall fuel savings. The power output of the transformer 201 can be matched to the size of the power battery 300, for example, from 70kW to 180kW.

[0044] It should be noted that this first motor controller 202 is a dual-motor controller. This first motor set includes a first drive motor 203 and a generator 204. Both the first drive motor 203 and the generator 204 are connected to the aforementioned dual-motor controller (i.e., the first motor controller 202). The generator 204 is electrically connected to the power battery 300, or both the generator 204 and the first drive motor 203 are electrically connected to the power battery 300, so as to charge the power battery 300. When the power battery 300 is connected to the first drive motor 203, it can also drive the first drive motor 203 to propel the vehicle.

[0045] In some embodiments, the first motor controller 202 may also be a single motor controller, and the first motor group may only include the first drive motor 203. The first motor controller 202 is electrically connected to the first drive motor 203, and the first drive motor 203 is electrically connected to the power battery 300.

[0046] Furthermore, since the step-up transformer 201 and the first motor controller 202 are connected in parallel to the power battery 300, when the step-up transformer 201 is in the off state, the first motor set can be driven in pure electric mode alone, or the second motor set 402 can be driven in pure electric mode alone, or the first motor set and the second motor set 402 can be driven in pure electric mode together, so that the vehicle is in pure electric mode.

[0047] In this embodiment of the application, the second motor group 402 includes a second drive motor, and the second motor controller 401 is a single motor controller, which is electrically connected to the second drive motor.

[0048] It is worth mentioning that the power battery 300 can be electrically connected to the step transformer 201 and the second motor controller 401 via DC high-voltage lines, so as to transfer the power of the power battery 300 to the step transformer 201 and the second motor controller 401.

[0049] The first drive device 200 can be connected to the engine 100 by a spline mechanical connection or other connection methods, as long as the first drive device 200 and the engine 100 can be connected. The specific connection method can be implemented according to different embodiments.

[0050] For example, taking a plug-in hybrid electric vehicle (PHEV) with a pure electric range of 100km as an example, by using the above drive system to drive the vehicle in pure electric mode via rear-wheel drive, the device losses caused by the operation of the step-up transformer 201 can be reduced, achieving the effect of saving electricity and fuel for the whole vehicle, and the pure electric range can be increased to 101 to 110km.

[0051] In one possible embodiment of this application, when the battery charge is greater than a preset charge threshold, the drive system uses a rear-drive pure electric mode to drive the vehicle, thereby reducing the device losses caused by the transformer 201 and achieving fuel saving for the whole vehicle.

[0052] It is worth mentioning that, in addition to driving the vehicle in pure electric mode, this drive system can also drive the vehicle in series drive, parallel drive and other modes.

[0053] The following is a detailed introduction to each mode:

[0054] When the drive system is operating in pure electric drive mode, the power battery 300 has a charge greater than the preset charge threshold, and the accelerator pedal opening is less than the preset pedal opening. That is, when the battery charge is high, the throttle is low, and the vehicle speed is low, the control transformer 201 is in the off state, and the second drive device 400 is driven in pure electric mode.

[0055] In other words, when the power battery 300 has a high charge, the throttle opening is small, and the vehicle speed is low, this drive system adopts a rear-wheel drive pure electric mode. That is, the battery charge of the power battery 300 is sent to the second motor controller 401, which then sends it to the second motor assembly 402. The second motor assembly 402 drives the rear wheels to rotate, thereby driving the vehicle to move.

[0056] In addition, when the power battery 300 has a high charge, the throttle opening is small, and the vehicle speed is high, this drive system can also adopt a rear-wheel drive pure electric mode. That is, when the power battery 300 has a charge that meets the conditions for high-speed driving, the power battery 300 can directly transmit the battery charge to the second motor controller 401, and the second motor controller 401 then transmits it to the second motor assembly 402. The second motor assembly 402 drives the rear wheels to rotate, thereby driving the vehicle to move.

[0057] When the drive system is operating in parallel drive mode, the power battery 300 has a charge greater than a preset charge threshold, the accelerator pedal opening is greater than a preset pedal opening, and the vehicle speed is greater than a preset vehicle speed threshold. In this case, the boost transformer 201 is in a closed state, the first drive device 200 is driven in parallel mode, and the second drive device 400 is driven in pure electric mode.

[0058] In other words, when the power battery 300 has a high charge, the throttle opening is large, and the vehicle speed is high, this drive system uses a combination of front-wheel drive in parallel and rear-wheel drive in pure electric mode to move the vehicle. It should be noted that front-wheel drive in parallel means that the first drive unit 200 drives the front wheels in parallel mode, thereby driving the vehicle. Furthermore, parallel mode also means that the engine 100 and the power battery 300 output power to the wheels together, thereby driving the vehicle. That is to say, when the throttle opening is large, the vehicle is driven by both parallel mode (driving the front wheels) and pure electric mode (driving the rear wheels).

[0059] Furthermore, the power battery 300 will prioritize allocating the required power to the second drive unit 400, and then allocate power to the first drive unit 200. That is, the power of the power battery 300 is preferentially allocated to the second drive unit 400. When the second drive unit 400 can complete pure electric mode driving, the remaining power is then allocated to the first drive unit 200, which drives the front wheels to rotate in parallel mode.

[0060] In other words, the power of the power battery 300 is mainly used to drive the rear wheels in the pure electric mode of the second drive unit 400, while the parallel mode of the first drive unit 200 assists in driving the front wheels. By prioritizing the allocation of power from the power battery 300 to the second drive unit 400, the vehicle's drive is primarily determined by the pure electric drive of the second motor unit 402 within the second drive unit 400. This reduces the power input to the step-up transformer 201 (used in parallel mode), thereby reducing device losses caused by the step-up transformer 201 in the first drive unit 200 and achieving overall vehicle fuel efficiency.

[0061] When the drive system is operating in series drive mode, the power battery 300 has a charge greater than the preset charge threshold, the step-up transformer 201 is turned on, the first drive device 200 is driven in series mode, and the second drive device 400 is driven in pure electric mode.

[0062] In other words, when the power battery 300 has a high charge, the throttle opening is large, and the vehicle speed is low, this drive system uses a combination of front-wheel drive series and rear-wheel drive pure electric modes to move the vehicle. It should be noted that front-wheel drive series means that the first drive unit 200 uses a series mode to drive the front wheels, thereby driving the vehicle. Furthermore, the series mode also means that the engine 100 drives one motor in the first motor group to generate electricity, which is then transmitted to the power battery 300, and the power battery 300 transmits the electricity to the other motor in the first motor group to drive the front wheels. That is, when the throttle opening is large, the vehicle is driven by a combination of two methods: driving the front wheels in series mode and driving the rear wheels in pure electric mode. In addition, the power battery 300 will prioritize allocating the required power to the second drive unit 400, and then allocate power to the first drive unit 200. That is, the power of the power battery 300 is first allocated to the second drive unit 400. When the second drive unit 400 can complete the pure electric mode drive, the remaining power is then allocated to the first drive unit 200, where the front wheels are driven in series mode.

[0063] In other words, the power of the power battery 300 is mainly used to drive the rear wheels in the pure electric mode of the second drive unit 400, while the series mode of the first drive unit 200 assists in driving the front wheels. By prioritizing the allocation of power from the power battery 300 to the second drive unit 400, the vehicle's drive is primarily determined by the pure electric drive of the second motor set 402 within the second drive unit 400. This reduces the power input to the step-up transformer 201 (used in the series mode), thereby reducing device losses caused by the step-up transformer 201 in the first drive unit 200 and achieving overall fuel efficiency.

[0064] When the drive system is operating in series drive mode, if the power battery 300 has a charge level lower than the preset charge threshold, the step-up transformer 201 is turned on, and the first drive device 200 is driven in series mode.

[0065] In other words, when the power battery 300 has a low charge and the vehicle is at a low speed, regardless of the throttle opening, the operating mode of this drive system is always front-wheel drive series mode. This means that the first drive unit 200 drives the front wheels in series, thereby driving the vehicle. As described above, this series mode means that the engine 100 drives one of the motors in the first motor assembly to generate electricity. The generated electricity is transmitted through the wiring harness to the first motor controller 202, and then through the step-up transformer 201 to the power battery 300 to charge it. After charging, the power battery 300 provides electrical energy to the other motor in the first motor assembly to drive the wheels, thereby driving the vehicle.

[0066] However, when the battery charge of the power battery 300 is less than the preset charge threshold and the vehicle speed is greater than the preset speed threshold, the working mode of the drive system is determined by the opening of the accelerator pedal.

[0067] That is, when the power battery 300 has low charge and the vehicle is at high speed, the working mode of this drive system is determined by the throttle opening.

[0068] When the accelerator pedal opening is less than the preset pedal opening (i.e., the throttle opening is small), this drive system adopts a front-wheel drive series mode, that is: the first drive unit 200 drives the front wheels in series mode, thereby driving the vehicle. The series mode is as described above, and will not be elaborated on here.

[0069] When the accelerator pedal opening is greater than the preset pedal opening (i.e., the throttle opening is large), this drive system uses the engine 100 direct drive mode to drive the vehicle. It should be noted that this engine 100 direct drive mode means that the engine 100 directly outputs power to the front wheels of the vehicle, and the engine 100's power is not used for power generation.

[0070] Table 1 below shows the various operating modes of the drive system:

[0071]

[0072] Table 1

[0073] It is worth mentioning that the step-up transformer 201 is set in the first drive unit 200, which can reduce the space occupied by the first motor unit, so that the front drive has a larger space environment and can be more rationally laid out.

[0074] It is understood that the preset vehicle speed threshold, preset pedal opening, and preset battery level threshold can be designed with different thresholds for different vehicles, and are not specifically limited in this application embodiment.

[0075] In some embodiments of this application, the boost transformer 201 is connected in series between the power battery 300 and the first motor controller 202. When the boost transformer 201 is in the off state, the first motor group is not driven, and the second motor group 402 is driven by pure electric power alone.

[0076] This application employs a non-step-up transformer electric drive in both pure electric and parallel modes, i.e., rear-drive pure electric drive, avoiding the component losses caused by the step-up transformer 201 and achieving overall vehicle energy and fuel savings. Furthermore, in series mode, the first drive unit 200 with a front-drive step-up transformer is preferentially used. The step-up transformer 201 improves motor efficiency, and the power consumption and losses through the step-up transformer 201 are low, achieving overall vehicle fuel savings.

[0077] Example 2

[0078] Embodiment 2 of this application provides a vehicle that includes any of the drive systems described in Embodiment 1. This drive system has any of the technical effects described in Embodiment 1. Through the drive system described in Embodiment 1, costs can be reduced, weight can be reduced, motor efficiency can be improved, motor size can be reduced, and the overall vehicle can achieve energy and fuel saving effects.

[0079] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0080] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.

Claims

1. A drive system characterized by, The application relates to a drive system, comprising: an engine; a first driving device connected with the engine, the first driving device comprising a step-up transformer, a first motor controller and a first motor set, the step-up transformer being connected with the first motor controller, and the first motor controller being connected with the first motor set; a second driving device comprising a second motor controller and a second motor set, the second motor controller being connected with the second motor set; a power battery electrically connected with the first driving device and the second driving device; controlling the step-up transformer to switch between a closed state and an open state according to the working mode of the drive system; wherein the power battery is configured to preferentially allocate power to the second driving device and then to the first driving device.

2. The drive system of claim 1, wherein, when the drive system works in a pure electric driving mode, the power of the power battery is greater than a preset power threshold, and the opening degree of an accelerator pedal is less than a preset pedal opening degree, the step-up transformer is in the closed state, and the second driving device is driven in the pure electric mode.

3. The drive system of claim 1, wherein, when the drive system works in a parallel driving mode, the power of the power battery is greater than a preset power threshold, the opening degree of an accelerator pedal is greater than a preset pedal opening degree, and the vehicle speed is greater than a preset vehicle speed threshold, the step-up transformer is in the closed state, the first driving device is driven in the parallel mode, and the second driving device is driven in the pure electric mode.

4. The drive system of claim 1, wherein, when the drive system works in a series driving mode, the power of the power battery is greater than a preset power threshold, the step-up transformer is in the open state, the first driving device is driven in the series mode, and the second driving device is driven in the pure electric mode.

5. The drive system of claim 1, wherein, when the drive system works in the series driving mode, the power of the power battery is less than a preset power threshold, the step-up transformer is in the open state, and the first driving device is driven in the series mode.

6. The drive system of claim 1, wherein, the power battery is electrically connected with the step-up transformer through a direct-current high-voltage line, and the power battery is electrically connected with the second motor controller through the direct-current high-voltage line.

7. The drive system of claim 1, wherein, the step-up transformer and the first motor controller are electrically connected in parallel to the power battery, when the step-up transformer is in the closed state, the first motor set is driven in the pure electric mode alone, or the second motor set is driven in the pure electric mode alone, or the first motor set and the second motor set are driven in the pure electric mode together.

8. The drive system of claim 1, wherein, the first motor set comprises a first driving motor and a generator, the first motor controller is a double-motor controller, the double-motor controller is electrically connected with the first driving motor and the generator, the generator is electrically connected with the power battery or the generator and the first driving motor are both electrically connected with the power battery.

9. The drive system of claim 1, wherein, the first motor set comprises a first driving motor, the first motor controller is a single-motor controller, the first motor controller is electrically connected with the first driving motor, and the first driving motor is electrically connected with the power battery.

10. The drive system of claim 7 or 8, wherein, the second motor set comprises a second driving motor, the second motor controller is a single-motor controller, and the second motor controller is electrically connected with the second driving motor.

11. The drive system of claim 1, wherein, The step-up transformer is connected in series electrically between the power battery and the first motor controller, and when the step-up transformer is in an off state, the first motor set is not driven, and the second motor set is driven independently and purely by electricity.

12. A vehicle characterized by comprising: The vehicle comprises the drive system according to any one of claims 1 to 11.

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