Hybrid vehicle and hybrid power system

Abstract

A hybrid vehicle is provided with an engine, a starter generator motor, a traction motor, an automatic manual transmission system, a battery, an automatic-switching clutch, and a control unit assembly. The starter generator motor is coupled and synchronously rotates with the engine for starting the engine and serving as an assistant power. The automatic manual transmission system is coupled with the traction motor and performs a gear-shifting / speed changing by controlling the rotation speed of the starter generator motor and the traction motor. The automatic-switching clutch is coupled between the starter generator motor and the automatic manual transmission system to make them be engaged / disengaged so as to switch the power type. The hybrid vehicle control device gives a signal to the torque / rotation speed control device to control the automatic-switching clutch to engage / disengage the engine and the traction motor according to the running state of the vehicle.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the priority benefit of Taiwan application serial no. 95149455, filed Dec. 28, 2006. All disclosure of the Taiwan application is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a hybrid vehicle and a hybrid power system.[0004]2. Description of Related Art[0005]With the continuous decrease of global crude oil resources and the increase of petroleum price, all the countries actively seek for other alternative energies and the energy conservation methods to alleviate the impact of petroleum crisis.[0006]Currently, the power sources that can be used in the automobile include fuel (diesel fuel, gasoline) engines, solar energy power systems, and electric drive systems, and so on. Among the above power sources, some have a preferred power effect and superior durability, but actually does not conform to the environmental protection requirement...

AI Technical Summary

Benefits of technology

[0012]In order to solve the above conventional problems, the present invention is directed to a hybrid power system and vehicle, which has a smooth gear-shifting by controlling the rotation speed with a dual-motor. The gear-shifting can be performed when the clutch is not disengaged (definitely, the gear-shifting can also be performed when the clutch is disengaged), so that the speed changes more smoothly, and the abrasion of the gear-shifting device is reduced, thus improving the power transmission efficiency of the automatic manual transmission system.

[0013]And, the present invention is directed to a hybrid power system and vehicle, which has a simple clutch mechanism, a lower cost of parts as compared with the conventional art, easy to assemble and maintain, smooth engagement and disengagement of the clutch, thus alleviating the damage caused by an unsmooth engagement of the gear during the gear-shifting.

[0022]According to the features of the present invention, the gear-shifting of the automatic manual transmission system is achieved by controlling the rotation speed of the starter generator motor and the traction motor, so that the speed changing of the transmission system becomes smoother.

[0023]According to the features of the present invention, the automatic-switching clutch can be used in the hybrid power system / hybrid vehicle to switch to different energy flow. The power-type-controlling unit (control unit assembly) then selects an optimal power type according to the operation state of the hybrid system / the running state of the vehicle, thus achieving the effect of power saving, low pollution, and output enhancement.

[0024]According to the features of the present invention, when an electromagnetic disc clutch or a centrifugal clutch is used as the automatic-switching clutch, due to the small volume, it is easy for the hybrid power system to arrange the relative position of each component, such that different types of hybrid power systems are assembled in a modularized way, and different hybrid vehicles are produced according to the requirement on the vehicle application and cost. It is preferred that, when the electromagnetic disc clutch is used as a clutch for changing power mode, the disengagement or engagement can be performed at any rotation speed, and the velocity of engaging or disengaging can be controlled accurately, so as to avoid the torque impact.

Problems solved by technology

Among the above power sources, some have a preferred power effect and superior durability, but actually does not conform to the environmental protection requirement, while others conforms to the environmental protection requirement, but cannot achieve the required power effect.

For example, although an electric automobile and a solar energy automobile do not adopt the conventional fuel engine, the power efficiency of these new power sources is limited.

Therefore, it is unfeasible to merely use a single power source.

1. The gear-shifting is completed by controlling the rotation speed of a single motor, such that the speed of the shifting is not quick, and the shifting is not smooth, so that it is difficult to improve the efficiency of the transmission.

2. The disc clutches according to the prior art can be substantially classified into two types, namely a mechanical type and a hydraulic type. The mechanical type uses an actuation lever to manipulate the engage and disengage of the clutch mechanically, which has a complicated mechanism and high cost of parts. The hydraulic type directly actuates the clutch by using an oil hydraulic pump to drive the oil cylinder instead of using the lever to actuate the clutch, which has a high cost of the oil hydraulic system, possibly has the oil leakage problem, and is difficult to be assembled and maintained. Moreover, the actuations of the two types are slow, such that the engage and disengage of the clutch are not smooth, and the transmission efficiency is reduced.

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