Hybrid power system and vehicle

Abstract

The utility model provides a hybrid power system and a vehicle. The hybrid power system comprises a battery unit, an electric drive unit and an engine, the battery unit is connected with the electric drive unit and used for supplying power to the electric drive unit, the engine is connected with the electric drive unit, and the battery unit comprises a first battery and a second battery which are connected. The electric drive unit comprises a front drive motor arranged at a front drive axle of the vehicle and a rear drive motor arranged at a rear drive axle of the vehicle. According to the hybrid power system and the vehicle, the transmission efficiency can be improved, and spatial distribution can be optimized.

Description

Technical Field

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

[0002] To reduce fuel consumption and emissions and meet existing dual-carbon policies, more and more automakers are developing and promoting hybrid vehicles. Hybrid systems combine an engine and an electric drive unit to achieve more efficient and environmentally friendly energy use. However, in current technologies, battery packs typically occupy significant interior space, especially when adapting to traditional models. The battery pack may conflict with other components, limiting the flexibility and optimization space of the vehicle's interior design. Furthermore, current technologies require the transmission of power to the front wheels via an engine, transmission, drive motor, drive shaft, and drive axle, resulting in a long power transmission path and low transmission efficiency.

[0003] Therefore, it is necessary to provide an improved hybrid power system and vehicle to solve the above problems. Utility Model Content

[0004] This application provides a hybrid power system and vehicle that improves transmission efficiency and optimizes spatial distribution.

[0005] This application discloses a hybrid power system, including a battery unit, an electric drive unit, and an engine. The battery unit is connected to the electric drive unit and is used to supply power to the electric drive unit. The engine is connected to the electric drive unit. The battery unit includes a first battery and a second battery connected together. The electric drive unit includes a front drive motor disposed at the front drive axle of the vehicle and a rear drive motor disposed at the rear drive axle of the vehicle.

[0006] Furthermore, the battery unit is located between the front drive motor and the rear drive motor, the first battery is connected to the front drive motor, and the second battery is connected to the rear drive motor.

[0007] Furthermore, the first battery is positioned close to the front drive motor, and the second battery is positioned close to the rear drive motor.

[0008] Furthermore, it also includes a clutch that connects the electric drive unit to the engine, the clutch being used to enable power transmission between the electric drive unit and the engine when closed.

[0009] Furthermore, the engine is located in front of the front drive motor, and the engine is connected to the front drive motor via the clutch, with the front drive motor supplying power to the engine.

[0010] Furthermore, the battery cell also includes at least one third battery, which is connected to the first battery and / or the second battery, and the first battery, the second battery and the third battery are distributed separately.

[0011] Furthermore, it also includes a control unit, which is communicatively connected to the battery unit, the electric drive unit, and the engine.

[0012] Furthermore, the hybrid power system has a pure electric drive mode, an engine drive mode, a hybrid drive mode, a regenerative braking mode, and a regenerative braking mode.

[0013] Furthermore, it also includes an on-board charging unit connected to the battery unit, the on-board charging unit including a DC charging port and an AC charging port.

[0014] This application also discloses a vehicle including a hybrid power system as described above, a front drive axle, a rear drive axle, front wheels and rear wheels, wherein the front wheels are connected to both ends of the front drive axle and the rear wheels are connected to both ends of the rear drive axle.

[0015] The hybrid power system and vehicle of this application, by setting a front-drive motor located at the front drive axle and a rear-drive motor located at the rear drive axle, can achieve separate drive for the front and rear wheels, thereby reducing the transmission chain of electric drive force. Furthermore, the front-drive motor and the rear-drive motor can respectively cooperate with the engine to achieve multiple drive modes, which is beneficial for optimizing energy distribution according to actual operating conditions and providing more flexible and efficient drive output. In addition, the battery unit includes a connected first battery and a second battery, which facilitates a decentralized design of the battery unit, allowing for a more flexible and rational distribution of the first and second batteries.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0018] Figure 1 This is a schematic diagram of one embodiment of the hybrid power system of this application.

[0019] Figure 2 This is a schematic diagram of another embodiment of the hybrid power system of this application.

[0020] Figure 3 This is a schematic diagram of yet another embodiment of the hybrid power system of this application.

[0021] Explanation of icon numbers:

[0022] 10. Battery unit; 11. First battery; 12. Second battery; 13. Third battery; 20. Electric drive unit; 21. Front drive motor; 22. Rear drive motor; 30. Engine; 40. Clutch; 50. Control unit; 60. On-board charging unit; 71. Front drive axle; 72. Rear drive axle; 73. Front wheel; 74. Rear wheel. Detailed Implementation

[0023] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0024] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0025] The embodiments of this application will now be described in detail.

[0026] like Figure 1 and Figure 2 As shown, this application provides a hybrid power system including a battery unit 10, an electric drive unit 20, an engine 30, a clutch 40, a control unit 50, and an on-board charging unit 60. The battery unit 10 is connected to the electric drive unit 20 and supplies power to the electric drive unit 20. The engine 30 is connected to the electric drive unit 20.

[0027] The battery unit 10 includes a first battery 11 and a second battery 12 connected together. The electric drive unit 20 includes a front drive motor 21 and a rear drive motor 22. The front drive motor 21 is located at the front drive axle 71 of the vehicle and can output driving force to the front drive axle 71. The rear drive motor 22 is located at the rear drive axle 72 of the vehicle and can output driving force to the rear drive axle 72.

[0028] The configuration of the front-drive motor 21 and the rear-drive motor 22 allows the hybrid system to adjust the drive ratio of the front and rear electric drives according to the vehicle's load and driving environment, improving the flexibility and adaptability of the hybrid system. This provides a good response for both high-power driving situations (such as acceleration and hill climbing) and low-load situations (such as city driving).

[0029] Battery cell 10 is located between front drive motor 21 and rear drive motor 22. First battery 11 is connected to front drive motor 21, and second battery 12 is connected to rear drive motor 22. First battery 11 can supply power to at least one of the front drive motor 21 and rear drive motor 22, and second battery 12 can supply power to at least one of the front drive motor 21 and rear drive motor 22. When one of the first battery 11 and second battery 12 fails, the other can continue to supply power, thereby reducing the impact of the failure on the overall vehicle performance.

[0030] like Figure 1 As shown, the first battery 11 and the second battery 12 are arranged along the longitudinal direction of the vehicle. The first battery 11 is positioned near the front drive motor 21, and the second battery 12 is positioned near the rear drive motor 22. In some cases, such as Figure 2 As shown, the first battery 11 and the second battery 12 can also be arranged along the left and right directions of the vehicle.

[0031] The model, size, capacity, and energy density of the first battery 11 and the second battery 12 can be flexibly set according to actual needs. The positions of the first battery 11 and the second battery 12 can also be flexibly distributed between the front drive motor 21 and the rear drive motor 22 to adapt to the layout requirements of the hybrid power system and improve vehicle stability and thermal management.

[0032] Furthermore, such as Figure 3 As shown, the battery unit 10 also includes at least one third battery 13. The third battery 13 is connected to the first battery 11 and / or the second battery 12. The first battery 11, the second battery 12, and the third battery 13 are distributed separately. The third battery 13 can supply power to at least one of the front drive motor 21 and the rear drive motor 22.

[0033] The hybrid power system of this application distributes the battery cell 10 into several batteries, which can effectively optimize the layout of the hybrid power system and improve vehicle stability and thermal management. By distributing the batteries at different positions at the front, rear, left, and right of the vehicle, the vehicle's center of gravity can be balanced, reducing stability problems that may be caused by concentrated battery layout, while improving the system's heat dissipation efficiency and extending battery life. In addition, the distributed arrangement of batteries can also reduce the impact on vehicle performance in the event of a failure, increasing system redundancy and reliability.

[0034] Clutch 40 connects electric drive unit 20 and engine 30. When clutch 40 is closed, power transmission between electric drive unit 20 and engine 30 is realized. Specifically, engine 30 is located in front of front drive motor 21. Engine 30 and front drive motor 21 are connected through clutch 40. Front drive motor 21 is used to supply power to engine 30 and start engine 30.

[0035] The control unit 50 is communicatively connected to the battery unit 10, the electric drive unit 20, and the engine 30, and is used to send control signals to the battery unit 10, the electric drive unit 20, and the engine 30.

[0036] The on-board charging unit 60 is connected to the battery unit 10 and includes both a DC charging port and an AC charging port. It can be used with external charging devices to provide power to the battery unit 10. The DC charging port directly transmits current to the first battery 11 and / or the second battery 12, charging with a higher current, enabling fast charging of the battery unit 10, suitable for long-distance travel or situations requiring urgent charging. The AC charging port converts AC power to DC power before transmitting it to the first battery 11 and / or the second battery 12, enabling slow charging of the battery unit 10, suitable for daily use or situations with long parking times.

[0037] The hybrid system features pure electric drive mode, engine drive mode, hybrid drive mode, regenerative braking mode, and driving-to-energy mode. Control unit 50 can control the switching between these different modes.

[0038] In pure electric drive mode, the control unit 50 controls at least one of the first battery 11 and the second battery 12 to supply power to at least one of the front drive motor 21 and the rear drive motor 22, and at least one of the front drive motor 21 and the rear drive motor 22 outputs driving force. The pure electric drive mode relies entirely on the battery unit 10 for driving, improving fuel economy and reducing environmental pollution.

[0039] The motor can be driven by either the front drive motor 21 or the rear drive motor 22 individually, or by both motors simultaneously. When driven individually, either the front drive motor 21 or the rear drive motor 22 can be powered by either the first battery 11 or the second battery 12 individually, or by both batteries simultaneously. When driven simultaneously, either the first battery 11 or the second battery 12 can power both the front drive motor 21 and the rear drive motor 22 individually, or by both batteries simultaneously.

[0040] In engine-driven mode, control unit 50 controls battery unit 10 to supply power to electric drive unit 20. Electric drive unit 20 then supplies power to engine 30 to start engine 30, which then outputs driving force independently. Specifically, first battery 11 and / or second battery 12 supply power to front drive motor 21, which starts engine 30. Engine-driven mode relies on engine 30 to provide stable power output, making it suitable for long-term high-speed driving and extending driving range.

[0041] In hybrid drive mode, control unit 50 controls battery unit 10 to supply power to electric drive unit 20, which in turn supplies power to engine 30 and starts it. Clutch 40 is engaged, and engine 30 and electric drive unit 20 jointly output driving force. In this mode, either front drive motor 21 or rear drive motor 22 can jointly output driving force with engine 30, or front drive motor 21, rear drive motor 22, and engine 30 can work together to output driving force. First battery 11 and / or second battery 12 supply power to electric drive unit 20. Hybrid drive mode can combine the advantages of battery unit 10 and engine 30, improving power performance and fuel efficiency, and adapting to various driving conditions.

[0042] In regenerative braking mode, the control unit 50 controls at least one of the front drive motor 21 and the rear drive motor 22 to generate electricity through braking, and stores the electrical energy in the battery cell 10. Regenerative braking mode improves energy utilization efficiency and increases battery range by recovering energy through braking.

[0043] In driving power generation mode, control unit 50 controls clutch 40 to close, and engine 30 outputs driving force while driving at least one of the front drive motor 21 and rear drive motor 22 to reverse and generate electricity, which is then stored in battery cell 10. Driving power generation mode can rely on engine 30 to drive electric drive unit 20 to recover electrical energy and charge battery cell 10, ensuring energy supply during long-term driving.

[0044] Hybrid systems can switch between different operating modes according to driving needs and different road conditions, which not only improves the vehicle's economy and environmental performance, but also optimizes the driving experience and convenience.

[0045] This application also provides a vehicle including the hybrid power system described above, a front drive axle 71, a rear drive axle 72, front wheels 73, and rear wheels 74. The front wheels 73 are connected to both ends of the front drive axle 71, and the rear wheels 74 are connected to both ends of the rear drive axle 72.

[0046] The hybrid power system and vehicle of this application, by setting a front drive motor 21 located at the front drive axle 71 and a rear drive motor 22 located at the rear drive axle 72, can achieve separate driving of the front and rear wheels, thereby reducing the transmission chain of electric drive force. Furthermore, the front drive motor 21 and the rear drive motor 22 can respectively cooperate with the engine 30 to achieve multiple driving modes, which is beneficial for optimizing energy distribution according to actual operating conditions and providing more flexible and efficient drive output. In addition, the battery unit 10 includes a first battery 11 and a second battery 12 connected together, which facilitates the decentralized design of the battery unit 10, making the positional distribution of the first battery 11 and the second battery 12 more flexible and reasonable.

[0047] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A hybrid power system, characterized in that, The device includes a battery unit, an electric drive unit, and an engine. The battery unit is connected to the electric drive unit and is used to supply power to the electric drive unit. The engine is connected to the electric drive unit. The battery unit includes a first battery and a second battery connected together. The electric drive unit includes a front drive motor located at the front drive axle of the vehicle and a rear drive motor located at the rear drive axle of the vehicle.

2. The hybrid power system according to claim 1, characterized in that, The battery unit is located between the front drive motor and the rear drive motor. The first battery is connected to the front drive motor, and the second battery is connected to the rear drive motor.

3. The hybrid power system according to claim 2, characterized in that, The first battery is positioned close to the front drive motor, and the second battery is positioned close to the rear drive motor.

4. The hybrid power system according to claim 1, characterized in that, It also includes a clutch that connects the electric drive unit to the engine, and the clutch is used to enable power transmission between the electric drive unit and the engine when closed.

5. The hybrid power system according to claim 4, characterized in that, The engine is located in front of the front drive motor, and the engine is connected to the front drive motor via the clutch. The front drive motor is used to supply power to the engine.

6. The hybrid power system according to claim 1, characterized in that, The battery cell further includes at least one third battery, which is connected to the first battery and / or the second battery, and the first battery, the second battery and the third battery are distributed separately.

7. The hybrid power system according to claim 1, characterized in that, It also includes a control unit, which is communicatively connected to the battery unit, the electric drive unit and the engine.

8. The hybrid power system according to claim 1, characterized in that, The hybrid system has a pure electric drive mode, an engine drive mode, a hybrid drive mode, a regenerative braking mode, and a regenerative braking mode.

9. The hybrid power system according to claim 1, characterized in that, It also includes an on-board charging unit connected to the battery unit, the on-board charging unit including a DC charging port and an AC charging port.

10. A vehicle, characterized in that, The system includes a hybrid power system as described in any one of claims 1-9, a front drive axle, a rear drive axle, a front wheel, and a rear wheel, wherein the front wheel is connected to both ends of the front drive axle, and the rear wheel is connected to both ends of the rear drive axle.

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