CN201165194Y - A drive system for a multi-shaft drive hybrid electric vehicle - Google Patents

Abstract

The utility model discloses a drive system for a multi-shaft drive hybrid electric vehicle, which comprises a first power source of an engine, the output of the engine is connected to a speed change mechanism, the output of the speed change mechanism is connected to a transmission mechanism to drive the first drive shaft, and it also includes at least one set of motors connected with the engine. For different power sources, the output of the set of power sources is connected to the speed change transmission mechanism, and the output of the speed change transmission mechanism is connected to a drive shaft different from the first drive shaft. Due to the establishment of multiple axles, the carrying capacity of the vehicle is greatly improved, and it is not limited; the structure is simple, and the complicated transfer device is cancelled; the motor drive and engine drive are combined in various forms, and the control is flexible; this ensures the off-road and passability of the vehicle. Under the premise, it can greatly improve the carrying capacity of the vehicle, realize the optimization of energy utilization, reduce the complexity of the system, improve the power and braking performance of the vehicle, reduce energy consumption and emissions, reduce vehicle weight and reduce manufacturing costs.

Description

A drive system for a multi-shaft drive hybrid electric vehicle

technical field

The utility model belongs to a hybrid power device, in particular to a hybrid power driving system, that is, a multi-shaft driving hybrid power vehicle driving system.

Background technique

Most of the existing multi-axle drive vehicles are a power source that transmits power to multiple drive shafts through the transfer device to realize power distribution, and use the road surface adhesion as much as possible to improve the off-road performance, power performance, braking performance and passability of the vehicle. At the same time, the axle load distribution is improved, but the energy utilization efficiency of this scheme is very low, resulting in the need for a high-power power plant to meet the requirements, which makes the vehicle structure complex, weight increases, energy consumption increases, emissions deteriorate, and the cost is high No more.

Using hybrid drive technology can better solve the above problems. The hybrid drive system can be composed of several mechanically independent drive systems. Relying on the electronic control device of the whole vehicle, it can coordinate the working status and energy distribution between the various systems, thereby realizing the optimization of energy utilization and reducing the complexity of the system. , Reduce energy consumption and emissions, reduce weight and cost.

Invention patent (application number 03128810.3) and utility model (patent number 03132507.4) use the engine and electric motor to drive the front axle in series, and the hub motor to drive the rear axle to realize four-wheel drive. The manufacturing process is very demanding.

The invention patent (application number 200510046014.8) uses at least 2 engines to drive one shaft in combination, and the motor drives the other shaft, which is a more complex application and complicated to implement.

Contents of the invention

The purpose of this utility model is to provide a multi-shaft drive hybrid electric vehicle drive system with at least three drive shafts, so as to solve the above problems.

The technical scheme of the utility model is: a drive system for a multi-shaft drive hybrid electric vehicle, which includes the first power source of the engine, the output of the engine is connected to the speed change mechanism, the output of the speed change mechanism is connected to the transmission mechanism to drive the first drive shaft, and it also includes at least one set and The power source of the engine is different from the power source, and the output of the set of power sources is connected to the speed change transmission mechanism, and the output of the speed change transmission mechanism is connected to a drive shaft different from the first drive shaft.

The power source different from the engine power source is an electric drive device.

It includes one or more sets of electric driving devices, the electric driving device is an integrated generator and motor, and the output of each generator and motor integrated machine is respectively connected to different drive shafts.

The engine transmits power through a transmission to a drive shaft, which spins the wheels and moves the vehicle.

The motor transmits power to another drive shaft through a variable speed transmission mechanism or directly to drive the wheels to rotate to make the vehicle move. At the same time, when the vehicle is moving, the motor can generate electricity under the control of the motor controller, so as to recover braking energy or absorb excess energy from the engine to ensure the highest energy efficiency.

According to needs, one or more motor drive devices can be set up to form multi-axis drive.

There is no mechanical connection between the drive shafts, and the power is combined or split through the ground.

In addition to the drive shaft, one or several follower shafts can be added to achieve a reasonable distribution of vehicle loads.

The engine is one of gasoline engine, diesel engine, natural gas engine and liquefied petroleum gas engine.

The advantages of this structure are: due to the establishment of multiple axles, the vehicle's carrying capacity is greatly improved, and it is not limited; the structure is simple, and the complicated transfer device is cancelled; The control system can achieve optimal driving force distribution and recover braking energy. In this way, on the premise of ensuring the cross-country and passability of the vehicle, the carrying capacity of the vehicle can be greatly improved, the optimization of energy utilization can be realized, the complexity of the system can be reduced, the power and braking performance of the vehicle can be improved, energy consumption and emissions can be reduced, and Reduce vehicle weight and lower manufacturing costs.

Description of drawings

Figure 1 Schematic diagram of three-axis drive hybrid drive system

Figure 2 Schematic diagram of the drive system of a multi-axis drive hybrid electric vehicle with an integrated generator and electric machine

Figure 3 Schematic diagram of the connection structure between the engine and the integrated motor for starting and generating

Figure 4 is a schematic diagram of a three-axis drive hybrid drive system and an additional follower shaft.

Detailed ways

As shown in Figure 1, the vehicle controller 5 controls the engine controller 9 through the wire harness 8, and the engine controller 9 controls the engine 14 to work through the wire harness 7; the output of the engine 14 is connected to the speed change mechanism 15 and the transmission mechanism 10 to drive the drive shaft 16, The drive shaft 16 drives the wheels to move the vehicle.

The vehicle controller 5 controls the motor controller 3 through the wiring harness 4, the motor controller 3 controls the driving motor 12 through the wiring harness, drives the driving shaft 1 through the transmission mechanism 11, and the driving shaft 1 is connected to the wheels and rotates to move the vehicle. This is the first electric drive system. The motor controller 3 controls the drive motor 19 through the wiring harness 20, drives the drive shaft 17 through the speed change transmission mechanism 18, and the drive shaft 17 is connected to the wheels; rotating to make the vehicle move. This is the second electric drive system; the battery 6 provides power to the motor controller through the wiring harness 13 . When the vehicle is moving, the motor 12 can stop working, or be in the state of generating electricity, and absorb braking energy or excess energy of the engine through the ground. The engine here is one of a gasoline engine, a diesel engine, a natural gas engine and a liquefied petroleum gas engine, and it has a starter and a generator.

As shown in FIG. 2 , the engine 32 is connected to the starter and generator integrated motor 31 through the belt 30 ; the latter is controlled by the motor controller 3 through the wiring harness 13 , which is the engine drive system. When starting, the integrated motor 31 for starting and generating will pull the engine 12 to a higher speed in a very short time before starting to supply oil, and the idling process is canceled. When the engine 32 was running normally, the motor 31 integrating starter and power generation could stop working or generate electricity. During vehicle braking, deceleration or coasting, the engine can interrupt fuel supply. This enables the engine working process to be optimized, reducing fuel consumption and emissions. The integrated motor 31 for starting and generating can adopt the power supply of the vehicle-mounted high-voltage battery 6, and can also adopt the power supply of the auxiliary battery. Engine 32 does not have starter and generator. Other structures are the same as in Fig. 1 . The belt 30 is provided with a tensioning device.

As shown in FIG. 3 , the crankshaft pulley 29 of the engine is connected to the pulley 26 of the integrated starter and generator motor 31 through a belt 30 , and the belt 30 is tensioned bidirectionally by means of the tension pulley 24 and the tension pulley 28 .

As shown in FIG. 4 , the working condition of the hybrid drive system is the same as that in FIG. 1 , the difference is that a follower shaft 21 is added, and the dotted line 22 indicates that the follower shaft 21 is not mechanically connected with other shafts. The purpose of adding the follower shaft 21 is to make the axle load distribution of the vehicle reasonable, which is very beneficial for the application of large vehicles.

Based on the above Figure 4, it can also be extended to more than three shafts, but the engine drive is only one of the drive systems, and the other drive systems can be one, two or multiple electric drive systems, with or without follower shafts.

There are many options for the working mode of the vehicle. Taking the combination of engine drive system and two motor drive shaft systems as an example, a combination of working modes of the vehicle is shown in the table below.

Claims (7)

1, a kind of multiple shaft driving mixed power automobile driving system, it comprises driving engine first propulsion source, driving engine output connects speed-changing mechanism, speed-changing mechanism output connects transmission device and drives first axle drive shaft, it is characterized in that it also comprises the propulsion source that at least one cover is different with the engine power source, this cover propulsion source output connects variable transmission mechanism, and variable transmission mechanism output is connected to the axle drive shaft different with first axle drive shaft.

2, multiple shaft driving mixed power automobile driving system according to claim 1, it is characterized in that the propulsion source different with the engine power source for electricity drives moving device.

3, multiple shaft driving mixed power automobile driving system according to claim 1 is characterized in that described driving engine is a kind of in spark ignition engine, diesel engine, natural gas engine and the liquefied-petroleum-gas engine.

4, multiple shaft driving mixed power automobile driving system according to claim 1 is characterized in that described driving engine is the driving engine that does not have electrical generator and starter, connects starting and generating integrated motor on the driving engine.

5, multiple shaft driving mixed power automobile driving system according to claim 1, it is characterized in that it comprises a cover or the above electric driver of a cover, described electric driver is generating and electronic all-in-one, and every cover generating is connected respectively to different axle drive shafts with the output of electronic all-in-one.

6, multiple shaft driving mixed power automobile driving system according to claim 1 is characterized in that it also comprises servo axis.

7, as multiple shaft driving mixed power automobile driving system as described in the claim 4, it is characterized in that described driving engine and starting and being connected of generating integrated motor be: engine crankshaft belt pulley is connected by belt with the belt pulley of starting and generating integrated motor, and belt relies on tension wheel and tension wheel to carry out two-way tensioning.

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