Range-extending type motorcycle based on front hub motor and rear wheel side motor

Abstract

The invention discloses an extended-range motorcycle based on a front hub motor and a rear wheel side motor. The extended-range motorcycle is composed of a vehicle control unit (VCU), the hub motor, a range extender, a generator, the wheel side motor and the like. According to the vehicle, the range extender, the battery, the motor and the low-voltage circuit are managed in a unified mode through the single VCU. The vehicle can autonomously set the SOC value of the battery, the VCU detects the electric quantity of the battery to control the start and stop of the range extender, the range extender drives the generator to operate to charge the battery, when the vehicle is in a downhill or deceleration state, the battery can be reversely charged through the kinetic energy recovery function of the front motor and the rear motor, and the vehicle detects the opening degree of the electric switch through the VCU to supply power to the front motor and the rear motor. And a whole-vehicle high-voltage circuit is constructed.

Description

Technical Field

[0001] The present invention relates to the field of new energy motorcycles, and in particular to a range-extended motorcycle based on a front hub motor and a rear wheel side motor. Background Art

[0002] Extended-range electric vehicles (RVEVs) use a small engine (range extender) to generate electricity, offsetting the shortcomings of pure electric range. They are a practical path to motorcycle electrification. Addressing the power and space limitations of traditional single-motor solutions, they innovatively employ a dual-motor architecture: a front hub motor + a rear wheel-mounted motor. The front hub motor is highly integrated within the wheel, enabling compact front drive and kinetic energy recovery. The rear wheel-mounted motor independently drives the rear wheel via a reduction gear, providing high-torque primary drive and significantly improving traction and handling stability in complex road conditions. The range extender (typically a high-efficiency internal combustion engine) is solely responsible for generating electricity, operating consistently within its high-efficiency range. This electricity is used to both drive the motor and replenish the battery, completely eliminating range anxiety. This configuration combines the layout advantages of a hub motor with the performance potential of a wheel-mounted motor, while leveraging the range-enhancing capabilities of a RVEV system. This provides a new direction for technological integration in the development of high-performance, long-range RVs. Summary of the Invention

[0003] The purpose of this invention is to overcome the limitations of traditional fuel-powered and pure electric systems, and a range-extended hybrid system consisting of a front-wheel hub motor and a rear-wheel side motor has been developed. As a distributed drive solution, the front-wheel hub motor can achieve precise steering assistance and active safety control; the rear-wheel side motor can provide a more direct power response while reducing the complexity of the transmission system. This layout uses a collaborative mode in which the front drive achieves efficient cruising and the rear drive is responsible for instantaneous acceleration. In conjunction with a small and efficient range extender, it retains the low noise and high efficiency advantages of pure electric drive while solving the problem of range anxiety. The system improves handling stability through torque vectoring and realizes intelligent switching between energy recovery and power distribution. It represents the technological trend of two-wheeled vehicles towards modularization and intelligence, and provides an innovative solution for future urban travel that combines environmental performance with driving pleasure.

[0004] The present invention solves the above technical problems through the following technical means: A range-extended motorcycle based on a front hub motor and a rear wheel-side motor comprises a frame (1), a hub motor (2), a suspension system (3), a steering system (4), vehicle accessories (5), a fuel tank (6), a range extender (7), a large pulley (8), a common V-belt (9), a small pulley (10), a generator (11), a VCU (12), a wheel-side motor (13), a small sprocket (14), a chain (15), a large sprocket (16), a rear wheel (17), a braking system (18), a battery (19), and a storage battery (20), wherein the vehicle accessories include an instrument panel, vehicle lights, and spark plugs; The hub motor (2), suspension system (3), steering system (4), vehicle accessories (5), fuel tank (6), range extender (7), generator (11), VCU (12), wheel motor (13), rear wheel (17), brake system (18), battery (19) are as follows: Figure 1 The vehicle is mounted on a vehicle frame (1); the large pulley (8) is mounted on a range extender (7); the small pulley (10) is mounted on a generator (11); the range extender (7) and the generator (11) are driven by a common V-belt (9); the small sprocket (14) is mounted on a wheel-side motor (13); the large sprocket (16) is mounted on a rear wheel (17); the wheel-side motor (13) and the rear wheel (17) are driven by a chain (15); the battery (20) is mounted on the battery (19); The parameters of the extended-range motorcycle based on the front hub motor and the rear wheel side motor are: top speed 140km / h, pure electric range 90km, low-power fuel consumption 1.6L / 100km, and comprehensive range 650km.

[0005] The size of the hub motor (2) is 14 inches, the rated power is 4 kW, and the peak power is 5 kW.

[0006] The range extender (7) is a V2 gasoline engine with a cylinder angle of 60 degrees, and its parameters are: displacement 250cc, rated power 20kw, and peak power 22kw.

[0007] The rated power generation of the generator (11) is 18 kW, and the peak power generation is 20 kW. The VCU (12) can be used to control different powers to shunt power to the hub motor (2), the wheel side motor (13), the battery (19), and the storage battery (20).

[0008] The VCU (12) can monitor the vehicle status in real time through wheel-end sensors on the wheel hub motor (2) and the wheel side motor (13); when the vehicle is in a high-load and slippery road condition, the wheel hub motor (2) and the wheel side motor (13) are used to distribute power to the front and rear axles; when the vehicle is in a low-load condition, only the wheel hub motor (15) is started.

[0009] The wheel-side motor (13) is a permanent magnet synchronous motor with a rated power of 12 kW and a peak power of 15 kW.

[0010] The battery (19) uses a lithium iron phosphate cell, and its parameters are: length 320mm, width 280mm, thickness 190mm, voltage 96V, and capacity 40Ah.

[0011] The battery (20) uses a lithium iron phosphate battery cell, and its parameters are: length 159mm, width 90mm, thickness 78mm, voltage 12V, and capacity 5.5Ah.

[0012] The battery (19) can independently set the SOC value, and the start and stop of the range extender (7) is controlled by detecting the power of the battery (19) through the VCU (12). The range extender (7) drives the generator (11) to operate through the belt drive for charging the battery (19); when the vehicle is in a downhill or decelerating state, the kinetic energy recovery function of the hub motor (2) and the wheel side motor (13) can also be used to realize reverse charging of the motor to the battery (19); in a non-driving state, 220V AC can be used for slow charging with a power less than 7kw and high-voltage DC can be used for fast charging with a power greater than 7kw; and an external discharge function with a power of 6kw is supported.

[0013] The battery (20) can be charged by controlling the generator (11) by detecting the amount of electricity through the VCU (12). When the battery (20) is depleted due to long-term parking of the vehicle, the battery (19) can be controlled by the VCU (12) to directly supply power to the battery (20).

[0014] This technical solution has the following advantages: 1. The front wheel hub motor is highly integrated, saving space and realizing front drive energy recovery; the rear wheel side motor is independently arranged to provide strong main driving force, optimizing vehicle space utilization and transmission efficiency; 2. Independent control of the dual motors dynamically distributes front and rear torque, adapting to complex road conditions, improving handling responsiveness and energy efficiency, and overcoming the limitations of a single-drive architecture. 3. The high-efficiency range extender focuses on power generation and operates in the optimal range, completely eliminating range anxiety; combined with the advantages of the dual-motor configuration, it provides a fusion solution of long battery life and high performance for motorcycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the range-extended motorcycle based on the front hub motor and the rear wheel side motor of the present invention.

[0016] Figure 2 The present invention is a circuit diagram of a range-extended motorcycle based on a front wheel hub motor and a rear wheel side motor.

[0017] Figure 3 It is a schematic diagram of the frame structure of the range-extended motorcycle based on the front hub motor and the rear wheel side motor of the present invention.

[0018] Figure 4 This is a partial installation diagram of the range-extended motorcycle based on the front hub motor and the rear wheel side motor of the present invention. Figure 1 .

[0019] Figure 5 This is a partial installation diagram of the range-extended motorcycle based on the front hub motor and the rear wheel side motor of the present invention. Figure 2 .

[0020] Figure 6 The diagram is a schematic diagram of the battery installation of a range-extended motorcycle based on a front wheel hub motor and a rear wheel side motor according to the present invention. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments: like Figures 1-6 As shown, the present invention is based on a range-extended motorcycle with a front wheel hub motor and a rear wheel side motor, comprising a frame (1), a wheel hub motor (2), a suspension system (3), a steering system (4), vehicle accessories (5), a fuel tank (6), a range extender (7), a large pulley (8), a common V-belt (9), a small pulley (10), a generator (11), a VCU (12), a wheel side motor (13), a small sprocket (14), a chain (15), a large sprocket (16), a rear wheel (17), a braking system (18), a battery (19), and a storage battery (20), wherein the vehicle accessories include an instrument panel, vehicle lights, and spark plugs, etc. Hub motor (2), suspension system (3), steering system (4), vehicle accessories (5), fuel tank (6), range extender (7), generator (11), VCU (12), wheel motor (13), rear wheel (17), brake system (18), battery (19) Figure 1 The vehicle is mounted on a vehicle frame (1); the large pulley (8) is mounted on a range extender (7); the small pulley (10) is mounted on a generator (11); the range extender (7) and the generator (11) are driven by a common V-belt (9); the small sprocket (14) is mounted on a wheel-side motor (13); the large sprocket (16) is mounted on a rear wheel (17); the wheel-side motor (13) and the rear wheel (17) are driven by a chain (15); the battery (20) is mounted on the battery (19); The parameters of the extended-range motorcycle based on the front hub motor and the rear wheel side motor are: top speed 140km / h, pure electric range 90km, low-battery fuel consumption 1.6L / 100km, and comprehensive range 650km.

[0022] The size of the hub motor (2) is 14 inches, the rated power is 4 kW, and the peak power is 5 kW.

[0023] The range extender (7) is a V2 gasoline engine with a cylinder angle of 60 degrees, and its parameters are: displacement 250cc, rated power 20kw, and peak power 22kw.

[0024] The rated power generation of the generator (11) is 18 kW, and the peak power generation is 20 kW. The VCU (12) can be used to control different powers to shunt power to the hub motor (2), the wheel side motor (13), the battery (19), and the storage battery (20).

[0025] The VCU (12) can monitor the vehicle status in real time through the wheel-end sensors on the wheel hub motor (2) and the wheel side motor (13). When the vehicle is in a high-load and slippery road condition, the wheel hub motor (2) and the wheel side motor (13) are used to distribute the power to the front and rear axles; when the vehicle is in a low-load condition, only the wheel hub motor (15) is started.

[0026] The wheel side motor (13) is a permanent magnet synchronous motor with a rated power of 12 kW and a peak power of 15 kW.

[0027] The battery (19) uses a lithium iron phosphate cell with the following parameters: length 320 mm, width 280 mm, thickness 190 mm, voltage 96 V, and capacity 40 Ah.

[0028] The battery (20) uses a lithium iron phosphate battery cell, and its parameters are: length 159mm, width 90mm, thickness 78mm, voltage 12V, and capacity 5.5Ah.

[0029] The battery (19) can independently set the SOC value, and the VCU (12) detects the battery (19) power to control the start and stop of the range extender (7), and the range extender (7) drives the generator (11) to operate through the belt drive for charging the battery (19); when the vehicle is in a downhill or deceleration state, the kinetic energy recovery function of the hub motor (2) and the wheel side motor (13) can also be used to realize the reverse charging of the motor to the battery (19); in the non-driving state, 220V AC can be used for slow charging with a power of less than 7kw and high-voltage DC can be used for fast charging with a power of more than 7kw; and an external discharge function with a power of 6kw is supported.

[0030] The battery (20) can be charged by the generator (11) by detecting the amount of electricity through the VCU (12). When the battery (20) is depleted due to long-term parking of the vehicle, the battery (19) can be controlled by the VCU (12) to directly supply power to the battery (20).

[0031] The above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that the technical solutions of the present invention may be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, and such modifications or equivalents shall be encompassed by the claims of the present invention. Any techniques, shapes, and structures not described in detail herein are well known.

Claims

1. A range-extended motorcycle based on a front hub motor and a rear wheel motor, comprising a frame (1), a hub motor (2), a suspension system (3), a steering system (4), vehicle accessories (5), a fuel tank (6), a range extender (7), a large pulley (8), a common V-belt (9), a small pulley (10), a generator (11), a VCU (12), a wheel motor (13), a small sprocket (14), a chain (15), a large sprocket (16), a rear wheel (17), a braking system (18), a battery (19), and a storage battery (20), wherein the vehicle accessories include an instrument panel, vehicle lights, and spark plugs; The wheel hub motor (2), suspension system (3), steering system (4), vehicle accessories (5), fuel tank (6), range extender (7), generator (11), VCU (12), wheel side motor (13), rear wheel (17), brake system (18), and battery (19) are mounted on the vehicle frame (1) as shown in FIG1 ; the large pulley (8) is mounted on the range extender (7); the small pulley (10) is mounted on the generator (11); the range extender (7) and the generator (11) are driven by a common V-belt (9); the small sprocket (14) is mounted on the wheel side motor (13); the large sprocket (16) is mounted on the rear wheel (17); the wheel side motor (13) and the rear wheel (17) are driven by a chain (15); and the battery (20) is mounted on the battery (19); The parameters of the extended-range motorcycle based on the front hub motor and the rear wheel side motor are: top speed 140km / h, pure electric range 90km, low-power fuel consumption 1.6L / 100km, and comprehensive range 650km.

2. The range-extended motorcycle based on a front hub motor and a rear wheel side motor according to claim 1, characterized in that: The size of the hub motor (2) is 14 inches, the rated power is 4 kW, and the peak power is 5 kW.

3. The range-extended motorcycle based on a front hub motor and a rear wheel side motor according to claim 1, characterized in that: The range extender (7) is a V2 gasoline engine with a cylinder angle of 60 degrees, and its parameters are: displacement 250cc, rated power 20kw, and peak power 22kw.

4. The range-extended motorcycle based on a front hub motor and a rear wheel side motor according to claim 1, characterized in that: The rated power generation of the generator (11) is 18 kW, and the peak power generation is 20 kW. The VCU (12) can be used to control different powers to shunt power to the hub motor (2), the wheel side motor (13), the battery (19), and the storage battery (20).

5. The range-extended motorcycle based on a front hub motor and a rear wheel side motor according to claim 1, characterized in that: The VCU (12) can monitor the vehicle status in real time through wheel-end sensors on the wheel hub motor (2) and the wheel side motor (13); when the vehicle is in a high-load and slippery road condition, the wheel hub motor (2) and the wheel side motor (13) are used to distribute power to the front and rear axles; when the vehicle is in a low-load condition, only the wheel hub motor (15) is started.

6. The range-extended motorcycle based on a front hub motor and a rear wheel side motor according to claim 1, characterized in that: The wheel-side motor (13) is a permanent magnet synchronous motor with a rated power of 12 kW and a peak power of 15 kW.

7. The range-extended motorcycle based on a front hub motor and a rear wheel side motor according to claim 1, characterized in that: The battery (19) uses a lithium iron phosphate cell, and its parameters are: length 320mm, width 280mm, thickness 190mm, voltage 96V, and capacity 40Ah.

8. The range-extended motorcycle based on a front hub motor and a rear wheel side motor according to claim 1, characterized in that: The battery (20) uses a lithium iron phosphate battery cell, and its parameters are: length 159mm, width 90mm, thickness 78mm, voltage 12V, and capacity 5.5Ah.

9. The battery (19) according to claim 7, characterized in that: The battery (19) can independently set the SOC value, and the start and stop of the range extender (7) is controlled by detecting the power of the battery (19) through the VCU (12). The range extender (7) drives the generator (11) to operate through the belt drive for charging the battery (19); when the vehicle is in a downhill or decelerating state, the kinetic energy recovery function of the hub motor (2) and the wheel side motor (13) can also be used to realize reverse charging of the motor to the battery (19); in a non-driving state, 220V AC can be used for slow charging with a power less than 7kw and high-voltage DC can be used for fast charging with a power greater than 7kw; and an external discharge function with a power of 6kw is supported.

10. The battery (20) according to claim 8, characterized in that: The battery (20) can be charged by controlling the generator (11) by detecting the amount of electricity through the VCU (12). When the battery (20) is depleted due to long-term parking of the vehicle, the battery (19) can be controlled by the VCU (12) to directly supply power to the battery (20).

Images