CN201931986U - Hybrid type mixed power driving system - Google Patents

Abstract

The utility model relates to a hybrid driving system, in particular to a hybrid hybrid driving system, which includes a battery pack, a front wheel, an engine, a controller, a wheel hub motor capable of generating electricity, a rear wheel, a controller and a battery The two front wheels are connected to each other, a transmission mechanism is provided between the two front wheels, an integrated motor and an automatic transmission of a motor and a generator are provided between the engine and the transmission mechanism, the engine is connected to the integrated motor, and the The integrated motor is connected with the automatic transmission and the controller, the automatic transmission is connected with the transmission mechanism, the battery pack is connected with the wheel hub motor capable of generating electricity, and the battery pack is connected with the integrated motor. The advantage of the utility model is that there is greater flexibility in the control of power flow, and the optimal control of fuel consumption and emission can be realized.

Description

A hybrid drive system

technical background

The utility model relates to a hybrid driving system, in particular to a hybrid hybrid driving system.

Background technique

At present, cars are playing an increasingly important role in people's daily life. At the same time, people have higher and higher requirements for the performance of the cars they ride, and the hybrid drive system is an important part of the car. Different drive The system has a great influence on the performance of the car. Usually, the hybrid generally refers to a hybrid electric vehicle, that is, a mixture of fuel and electric energy, and a hybrid vehicle has an electric motor as the auxiliary power of the engine to drive the vehicle. According to the connection mode of the hybrid drive, the hybrid system is mainly divided into three categories: one is the series hybrid system, the other is the parallel hybrid system, and the third is the hybrid hybrid system. The Chinese patent publication number is CN1552591A, and the disclosure date is December 8, 2004. The name of the invention is a hybrid electric vehicle drive system, which includes an engine, a front wheel, a storage battery, a wheel motor, a rear wheel, a generator, and a rear axle. There is a central control unit, a generator and a storage battery between the wheels and the rear wheels. The engine and the generator are connected in series. The central control unit is located between the generator and the storage battery. There is a wheel base motor, the stator of the wheel base motor is fixed on the rear axle, and its rotor is fixed to the hub of the rear wheel. Although the economic efficiency of the patent of the present invention is good and the engine efficiency is improved to a certain extent, it is flexible in the control of power flow Insufficient performance, fuel consumption and emissions can not achieve the expected results.

Contents of the invention

The purpose of this utility model is to overcome the above-mentioned technical problems of the existing hybrid drive system, to provide a hybrid drive with greater flexibility in the control of power flow, which can realize the optimal control of fuel consumption and emissions system.

The above-mentioned technical problems of the utility model are solved by the following technical solutions: a parallel hybrid drive system, comprising a battery pack and sequentially connected front wheels, an engine, a controller, a hub motor capable of generating electricity, and a rear wheel, The controller is connected to the battery pack, a transmission mechanism is provided between the two front wheels, an integrated motor of a motor generator and an automatic transmission are provided between the engine and the transmission mechanism, and the engine is connected to the integrated motor , the integrated motor is connected with the automatic transmission and the controller, the automatic transmission is connected with the transmission mechanism, the battery pack is connected with the hub motor capable of generating electricity, and the battery pack is connected with the integrated motor. The transmission mechanism arranged between the two front wheels can reduce the speed, increase the torque and change the direction of the torque, and play an auxiliary role when the car brakes, accelerates and reverses. The integrated motor of the engine and generator can convert electrical energy into mechanical energy to start the engine and convert the mechanical energy of the engine into electrical energy, and at the same time transmit the electrical energy to the battery pack to charge the battery pack. The hub motor that can generate electricity can recover the energy of braking when reversing, and does not need another generator, which saves cost and space.

Preferably, the transmission mechanism includes a final reducer and a differential, and the driven gear of the final reducer is connected to the differential housing. The main reducer has the function of decelerating and increasing the torque, and the differential has the function of changing the direction of the torque.

Preferably, the integrated motor is an ISG motor. ISG is an integrated starter and engine, which effectively saves space and improves work efficiency.

Preferably, the controller is connected with the battery pack, the hub motor, the engine and the integrated motor through sensors. The controller checks the working conditions of the battery pack, hub motor, engine and integrated motor in real time through sensors, and controls them in real time. It can effectively control the power flow of the engine and battery pack, increase flexibility, and achieve optimal control of fuel consumption and emissions.

Therefore, the utility model has the following advantages: 1. There is greater flexibility in the control of power flow, which can realize the final control of fuel consumption and emission and good power performance. 2. When the car is braking, the braking energy can be recovered through the hub motor to charge the battery pack, which improves the recovery of braking energy. 3. Save cost and space.

Description of drawings

Fig. 1 is a structural block diagram of a series hybrid drive system of the present invention.

1-rear wheel, 2-hub motor, 3-controller, 4-battery pack, 5-engine, 6-automatic transmission, 7-ISG motor, 8-final reducer, 9-differential, 10-front wheel .

Detailed ways

Below through embodiment, in conjunction with accompanying drawing, the technical scheme of utility model is described further in detail.

Embodiment: as shown in Fig. 1, a kind of parallel hybrid drive system, it comprises battery pack 4 and front wheel 10, motor 5, controller 3, wheel hub motor 2, rear wheel 1 that are connected successively, in two A transmission mechanism is provided between the front wheels 10, and the transmission mechanism includes a final drive 8 and a differential 9, the driven gear of the final drive 8 is connected with the housing of the differential 9, and the final drive 8 has the functions of decelerating and increasing torque. The differential gear 9 has the function of changing the torque direction, and the ISG motor 7 and the automatic transmission 6 are connected between the transmission mechanism composed of the final reducer 8 and the differential gear 9 and the engine 5, and the engine 5 is connected with the ISG motor 7 , the ISG motor 7 is connected with the controller 3, the automatic transmission 6 and the battery pack 4, the automatic transmission 6 is connected with the transmission mechanism, the engine 5, the ISG motor 7, the automatic transmission 6, the final drive 8 and the differential 9 are all mechanical structures Connected, ISG motor 7 is an integrated car starter and generator, which replaces the traditional starter motor with a motor with a large transient power, replaces the engine to drive the car for a short time in the starting stage, and starts the engine at the same time, reducing the idle speed of the engine Loss and pollution, during normal driving, the engine drives the vehicle, and the motor is disconnected or plays the role of generating electricity. The hub motor has a power generation function, which can recover braking energy when the car is braking, and can drive the car independently or jointly with the engine through the power supply of the battery pack. The controller 3 is connected to the battery pack 4, the ISG motor 7, the engine 5, and the in-wheel motor 2 through sensors. The controller 3 needs to monitor the SOC value of the battery pack 4 in real time, the charge and discharge of the battery pack 4, the disconnection of the ISG motor 7 and Power generation, the speed of the engine 5, start and stop control, some important devices such as the start and stop of the hub motor 2 and power generation, and then make adjustments in time.

The hybrid hybrid drive system adopted by the utility model can realize three driving forms: all-wheel drive, independent drive of the front wheel and independent drive of the hub motor of the rear wheel, which can meet the driving requirements of various working conditions, and can also realize pure Electric driving and recovery of braking energy. At the starting stage of the car, when the SOC value of the battery pack is higher than the set low limit value, the in-wheel motor is used to start in pure electric mode. When the battery pack SOC value is lower than the set low limit value When the engine starts, the engine starts and charges the battery pack; when the car is climbing, when the SOC value of the battery pack is higher than the set low limit value, the engine and the hub motor jointly drive to realize four-wheel drive, when the battery pack When the SOC value is lower than the set low limit value, the engine starts and the engine provides climbing power; during the acceleration phase of the vehicle, when the battery pack SOC value is higher than the set low limit value, the engine and the electric motor jointly provide peak power. To meet the driving power required for acceleration, when the SOC value of the battery pack reaches the low limit value, the driving power is provided by the engine; in the constant speed stage of the vehicle, when the SOC value of the battery pack is higher than the set low limit value and the driving speed is at the set When the pure electric vehicle is within the maximum driving speed range, the car is driven by the battery pack, and the engine does not work. When the SOC value of the battery pack is low, the car is driven by the engine, and the battery pack is charged when the engine power is surplus, and the engine is always kept on. Work in the high-efficiency zone; in the braking or deceleration phase, when the brake pedal is slightly depressed, the engine is turned off. If the SOC allows, the motor works in the power generation state, and the hub motor performs braking energy recovery to charge the battery pack. When both are pedaled, the hub motor provides torque, and the mechanical brake also participates in braking. Through the alternate use of different drive forms, the fuel economy of the vehicle is greatly improved and emissions are reduced.

Claims (4)

1. hybrid drive system in type of multiple series connection, comprise battery pack and the front-wheel that links to each other successively (10), driving engine (5), controller (3), wheel hub motor (2), trailing wheel (1), controller (3) links to each other with battery pack (4), it is characterized in that, be provided with transmission device between described two front-wheels (10), be provided with the integrate motor and the automatic transmission with hydraulic torque converter (6) of electrical motor and electrical generator between described driving engine (5) and the transmission device, described driving engine (5) links to each other with integrate motor, described integrate motor links to each other with controller (3) with automatic transmission with hydraulic torque converter (6), described automatic transmission with hydraulic torque converter (6) links to each other with transmission device, described battery pack (4) links to each other with the wheel hub motor that can generate electricity (2), and described battery pack (4) links to each other with integrate motor.

2. a kind of hybrid drive system in type of multiple series connection according to claim 1 is characterized in that, described transmission device comprises main reduction gear (8) and diff (9), and the driven gear of main reduction gear (8) is connected with the housing of diff (9).

3. a kind of hybrid drive system in type of multiple series connection according to claim 1 is characterized in that, described integrate motor is ISG motor (7).

4. according to claim 1 or 2 or 3 described a kind of hybrid drive system in type of multiple series connection, it is characterized in that described controller (3) is connected with integrate motor with battery pack (4), wheel hub motor (2), driving engine (5) by sensor.

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