CN201154662Y - Hybrid vehicles powered by engine front drive hub motors rear - Google Patents

Abstract

The utility model discloses a hybrid vehicle which is provided with an engine for front drive and a hub motor for rear drive, comprising a body, a steering mechanism, a braking device, the engine and a transmission device; the output ends of the engine and the transmission device are connected with a wheel axle of a front wheel, the hub motor is arranged in a rear wheel and is connected with a power battery and a motor controller. As only one front drive axle is adopted, the entire vehicle has concise arrangement and simple structure, the increment of the cost of the entire vehicle is estimated to be about the same with a mechanical type 4 multiplied by 4 full drive vehicle. Compared with an original vehicle, the fuel consumption and tail gas emission drop by 20%-30%, and the power loss of a motive power coupling hybrid vehicle during coupling can be avoided.

Description

Hybrid vehicles powered by engine front drive hub motors rear

technical field

The utility model belongs to vehicles, in particular to a hybrid electric vehicle driven by an engine at the front and driven by a hub motor at the rear.

Background technique

Existing hybrid vehicles mostly adopt electric drive and engine drive. The power output by the motor and the engine share a set of transmission devices. This increases the requirement for power coupling, that is, it is necessary to use a power coupling device to realize a common set of transmission devices for electric drive and engine drive. The requirements for power coupling are high and the structure is relatively complicated. This makes the power loss of the prime mover coupled hybrid vehicle when coupling; while the fuel consumption and exhaust emission of traditional 4×2 vehicles are relatively high.

Contents of the invention

The purpose of the utility model is to provide a hybrid electric vehicle in which the engine and the electric motor are respectively driven by the front drive of the engine and the rear drive of the hub motor.

The technical scheme of the utility model is: a hybrid vehicle driven by the front of the engine and driven by the hub motor, which includes a car body, a steering mechanism, a braking device, an engine and a transmission, and the output ends of the engine and the transmission are connected to the front wheel axle , the hub motor is arranged in the rear wheel, and the hub motor is connected to the power battery and the motor controller.

Compared with the prior art, the utility model has the beneficial effects that: on the basis of the traditional 4×2 automobile, a rear wheel device directly driven by the hub motor is added, which not only realizes 4×4 full drive, but also realizes Hybrid, can achieve fuel consumption and exhaust emissions are less than 4 × 2 drive the traditional car. Since there is only one front drive axle, the layout of the whole vehicle is simple and the structure is simple. It is estimated that the cost increase of the whole vehicle is similar to that of a mechanical 4×4 full drive. The fuel consumption and tail gas emission can be reduced by 20% to 30% compared with the original model, and at the same time, the power loss of the hybrid vehicle coupled with the driving force can be avoided.

Description of drawings

Fig. 1 is a schematic diagram of a hybrid electric vehicle driven by the front of the engine and the rear of the hub motor.

Fig. 2 Schematic diagram of engine front drive/wheel hub motor rear drive hybrid vehicle transmission.

Detailed ways

As shown in Figures 1 and 2, the car body of the hybrid electric vehicle is the same as the existing car body, and has mechanisms such as a steering mechanism and a braking device, and its structure is not repeated here. The output of the engine 1 is connected to the clutch 2, the clutch 2 is connected to the gearbox 3, the output of the gearbox 3 is connected to the differential drive axle 10, the output end of the differential drive axle 10 is connected to the front wheel axle, and the front wheel axle is connected to the front wheel 4. The hub motor 8 is connected to the rear wheel 9, and the input of the hub motor 8 is connected to the power battery 7 and the motor controller 6. The vehicle controller 5 is used for controlling the vehicle.

The utility model is composed of a set of traditional power drive device and a set of electric drive device, which are independent of each other in structure without mechanical connection, and transmit control information between the engine, motor and power storage battery through CAN bus communication.

The three drive modes of pure engine drive, pure motor drive and engine/motor hybrid drive front/rear wheels can be manually set, and are realized by the vehicle controller. Therefore, the vehicle drive system has high reliability. When the car is in the hybrid driving mode, it can be manually set that when the vehicle speed is low (for example <10km/h), the car is only driven by the in-wheel motor, and when the vehicle speed is higher than the set value, the engine is controlled by the vehicle controller Ignite and start, and the hybrid drive vehicle accelerates. When the vehicle slows down, slides or brakes, the vehicle controller controls the motor controller, and the hub motor switches from electric to power generation, recovering part of the kinetic energy of the vehicle, and charging the power battery; when the battery When the management system detects that the remaining charge (SOC) of the power battery is too low, the vehicle controller can also switch the motor from electric to power generation, and the vehicle drives the hub motor to generate electricity, and automatically keeps the power battery (SOC) at a minimum. Fluctuates within the range; when the car is parked, the vehicle controller controls the engine to cut off the fuel, so it can save the fuel consumption when the car is parked and the engine is idling.

When the car is driving in the urban center with dense vehicles and population, it can be manually set to the pure electric drive mode, and the emission of the car is zero at this time. If the power battery capacity is appropriately increased, the Plug-In HEV (external charging type) hybrid power mode can be easily realized, and the hybrid power drive mode is only used when driving in the suburbs or long distances. When the electric drive system fails, the pure engine drive mode can be manually set, and at this time, the vehicle controller cuts off the electric drive circuit and the wheel hub motors run idly.

Claims (1)

1. A hybrid vehicle driven by the front of the engine to drive the wheel hub motor. It includes a car body, a steering mechanism, a braking device, an engine and a transmission, and the output ends of the engine and the transmission are connected to the front wheel axle. It is characterized in that the rear A hub motor is arranged inside the wheel, and the hub motor is connected to a power battery and a motor controller.

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