CN203157694U - Extended range hybrid power city coach - Google Patents

Abstract

The utility model discloses a range-extended hybrid electric city bus, which comprises a body (1), an air conditioner (2) arranged on the top of the body (1), a chassis (3) arranged at the bottom of the body (1), and the chassis (3) An air compressor, a steering oil pump, and a water pump are installed on the chassis (3), and a power system is installed on the chassis (3). The power system includes a drive axle (4), a transmission shaft (5), a direct drive motor (6) and a power battery pack ( 8), the output shaft of the direct drive motor (6) is connected to the drive axle (4) through the transmission shaft (5), the power battery pack (8) is electrically connected to the direct drive motor (6), and the power system also includes a set The range extender (9) at the rear of the chassis (3), the fuel tank (10) providing fuel for the range extender (9), and the on-board charger (7) electrically connected to the power battery pack (8). The utility model has a long continuous driving mileage and can meet the daily running mileage requirements.

Description

An extended-range hybrid electric city bus

technical field

The utility model relates to the field of hybrid electric vehicles, in particular to a hybrid electric city bus equipped with a range extender.

Background technique

Compared with traditional cars, electric vehicles have less impact on the environment, so they have been used more and more widely. At present, there is an electric city bus that uses power lithium batteries to provide power for the drive motor. Because the current power lithium batteries have a small specific energy , and at present, the infrastructure such as the power station along the city bus has not been established, resulting in the short continuous mileage of the city bus, which cannot meet the needs of the daily operating mileage of the city bus.

Contents of the invention

The technical problem to be solved by the utility model is to provide an extended-range hybrid city bus with a long continuous mileage and can meet the needs of the daily mileage.

The technical solution adopted by the utility model is: a range-extended hybrid electric city bus, including a body, an air conditioner arranged on the top of the body, and a chassis arranged at the bottom of the body. An air compressor for air, a steering oil pump for the steering system, a water pump for circulating cooling water, and a power system installed on the chassis, the power system includes drive axles, drive shafts, direct drive motors and power battery packs The output shaft of the motor is connected to the drive axle through the transmission shaft, and the power battery pack is electrically connected to the direct drive motor. The power system also includes a range extender arranged at the rear of the chassis, a fuel tank for providing fuel for the range extender, and a The on-board charger electrically connected to the power battery pack.

Compared with the prior art by adopting the above structure, the utility model has the following advantages:

When the vehicle is driving for a long distance, when the energy of the power battery pack is exhausted or the set state is used, the range extender on the vehicle starts to work, and generates electric energy for the direct drive motor to keep the vehicle running, making the continuous driving mileage of the vehicle shorter. It can meet the needs of the vehicle’s daily running mileage, and the excess power generated by the range extender for the vehicle’s driving can be stored in the power battery pack for backup. When the vehicle starts and accelerates, it will be supplied to the drive motor together with the electric energy provided by the range extender. It improves the power performance of the vehicle, and cancels the clutch and transmission of the traditional car, and the direct drive motor is directly connected to the drive axle through the transmission shaft to drive the vehicle.

When the power of the power battery pack is insufficient, the power battery pack can be charged slowly by connecting the external mains power supply through the on-board charger, so as to avoid the loss of the power battery pack due to fast charging.

As an improvement, the air conditioner, air compressor, steering oil pump and water pump are all electrically connected to the power battery pack; the air conditioner, air compressor, steering oil pump and water pump are all electric, and the pollution is small.

As an improvement, the fuel tank can be a fuel tank for storing gasoline or diesel, or a gas cylinder for storing natural gas; by supplementing the fuel in the fuel tank or gas cylinder, the range extender can be supplied to generate electricity, and the driving range of the vehicle will not be affected. The vehicle power battery pack is limited in the amount of power obtained from the outside, and the range of fuel options is wide.

Description of drawings

Fig. 1 is the structural representation of a kind of range-extended hybrid city bus of the utility model;

Fig. 2 is a schematic structural diagram of a power system of an extended-range hybrid city bus of the present invention.

As shown in the figure: 1. Body; 2. Air conditioner; 3. Chassis; 4. Drive axle; 5. Drive shaft; 6. Direct drive motor; 7. On-board charger; 8. Power battery pack; 9. Range extender; 10. Fuel tank.

Detailed ways

The utility model is further described below in conjunction with the accompanying drawings and specific embodiments, but the utility model is not limited to the following specific embodiments.

As shown in Fig. 1 and Fig. 2: a kind of range-extended hybrid power city bus, comprises body 1, the air conditioner 2 that is arranged on the top of body 1, the chassis 3 that is arranged on the bottom of body 1, and chassis 3 is provided with for opening and closing car door and The brake system provides an air compressor for compressing air, a steering oil pump for the steering system, and a water pump for circulating cooling water. A power system is installed on the chassis 3. The power system includes a drive axle 4, a transmission shaft 5, a direct drive The motor 6 and the power battery pack 8, the output shaft of the direct drive motor 6 is connected with the drive axle 4 through the transmission shaft 5, the clutch and transmission of the traditional car are canceled, and the motor direct drive mode is used to drive the vehicle to run, the power battery pack 8 and the direct drive The drive motor 6 is electrically connected, and the power system also includes a range extender 9 arranged at the rear of the chassis 3 and a fuel tank 10 providing fuel for the range extender 9, and the range extender includes an engine and a generator , the engine works with fuel provided by the fuel tank, and converts mechanical energy into electrical energy through the generator. The engine speed is fixed, and it always works in the range of low emission and low fuel consumption. Charger 7. the

Described air conditioner 2, air compressor, steering oil pump and water pump are all electrically connected with power battery pack 8, that is to say described air conditioner 2, air compressor, steering oil pump, water pump are all electric.

The fuel tank 10 is a fuel tank for storing gasoline or diesel.

The fuel tank 10 is a cylinder for storing natural gas.

The working principle of the utility model is: when the system is powered on, the vehicle controller through the switch data acquisition, CAN1 and CAN2 bus data communication and switch output control and power output control, through the vehicle control strategy and the control system actuator Realize various functions related to driving. The details are as follows: a. switch data acquisition function, b. analog quantity acquisition function, c. electric water pump, electric oil pump, electric air pump, electric air conditioner management and control function, d. range extender start-stop and power output control function, e. Drive motor control and state information collection function, f, power battery pack management system state information collection function, g, driving control function.

When the vehicle starts to work, the vehicle controller automatically selects the vehicle working mode according to the collected data. When the vehicle runs in pure electric mode, the vehicle controller transmits a signal to the motor controller, and the motor controller controls the direct drive motor 6 to convert the electric energy of the power battery pack 8 into kinetic energy, and drives the vehicle through the drive axle 4. When the power battery pack 8 is consumed to the set DOD state, the vehicle controller transmits a signal to the range extender 9, and the range extender 9 starts to generate electricity, and provides electric energy to the direct drive motor 6 to keep the vehicle running continuously, and will keep The excess electric energy required for the operation of the vehicle is stored in the power battery pack 8 for backup, and when the vehicle starts and accelerates, the driver steps on the accelerator, and the accelerator signal transmitter sends a signal to the vehicle controller. When it is determined that the power battery pack 8 is required to participate in the work according to the collected instant state of the vehicle, a signal is sent to the battery management system, so that the power battery pack 8 releases electric energy, and the electric energy generated by the range extender 9 is simultaneously supplied to the direct drive motor 6 to jointly drive the vehicle run.

When the vehicle travels only using the electric energy of the vehicle-mounted power battery pack 8, it is the pure electric vehicle working mode. When the vehicle travels using the electric energy sent by the range extender 9, it is the hybrid power working mode. After the energy of group 8 is used to the set state, the range extender 9 is started to participate in the work to maintain the power consumption of the vehicle. The switching between the three modes is automatically controlled by the vehicle controller, or it can be set by the driver on the vehicle The manual switch realizes human control.

When the power battery pack 8 needs to be recharged, it can be charged in two modes of fast and slow through an external charging pile and an on-board charger.

When the oil or gas in the fuel tank or gas cylinder needs to be supplemented, the fuel tank or gas cylinder is added through an external gas station or gas filling station.

Claims (4)

1. extended-range hybrid electric urban bus, comprise vehicle body (1), be arranged on the air-conditioning (2) at vehicle body (1) top, be arranged on the chassis (3) of vehicle body (1) bottom, chassis (3) is provided with to opening and closing car door and brake system compressed-air actuated Air compressor is provided, the power steerig pump that is used for steering swivel system, the water pump that is used for recirculated cooling water, the chassis is equipped with power system on (3), described power system comprises drive axle (4), transmission shaft (5), direct driving motor (6) and power battery pack (8), the output shaft of direct driving motor (6) is connected with drive axle (4) by transmission shaft (5), power battery pack (8) is electrically connected with direct driving motor (6), it is characterized in that: described power system also comprises the distance increasing unit (9) that is arranged on rear portion, chassis (3), for distance increasing unit (9) provides the Fuel Tank (10) of fuel and the vehicle-mounted charge machine (7) that is electrically connected with power battery pack (8).

2. a kind of extended-range hybrid electric urban bus according to claim 1, it is characterized in that: described air-conditioning (2), Air compressor, power steerig pump, water pump all are electrically connected with power battery pack (8).

3. a kind of extended-range hybrid electric urban bus according to claim 1 is characterized in that: described Fuel Tank (10) is for storing the fuel tank of gasoline or diesel oil.

4. a kind of extended-range hybrid electric urban bus according to claim 1, it is characterized in that: described Fuel Tank (10) is the gas cylinder of natural gas-storing.

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