Multi-gear series-parallel type hybrid power system
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A hybrid power system and hybrid technology, which is applied in the direction of hybrid vehicles, power devices, pneumatic power devices, etc., can solve the problems of limiting the vehicle's pure electric drive capability and low transmission efficiency, so as to reduce the speed requirement and improve the transmission efficiency. efficiency effect
Active Publication Date: 2015-07-22
JILIN UNIV
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When the system is running at high speed, there is a power cycle inside the planetary gear train, which results in low transmission efficiency under high-speed conditions; in addition, there is only a fixed speed ratio between the drive motor and the wheels of the system, which seriously limits the vehicle's pure Electric drive capability
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[0026] see figure 1 Shown, is the embodiment of the present invention, and this embodiment is made up of engine 1, input shaft 2, planetary gear train, No. 1 motor 11, No. 2 motor 10, inverter 13, power battery 14, lock, first Gear 21, second gear 20, third gear 18, fourth gear 16, fifth gear 15 and clutch form. The engine 1 is connected to the input shaft 2, and the input shaft 2 is connected to the planet carrier 5; the planetary gear train includes a front row sun gear 4, a front row planetary gear 7, a front row ring gear 6, a planet carrier 5, and a rear planetary gear train. wheel 9 and the rear ring gear 8, wherein the front row planetary gear 7 and the rear row planetary gear 9 are coaxially fixed; the No. 1 motor 11 is connected to the front row sun gear 4, and the No. 2 motor 10 is connected to the rear row ring gear 8 connection; the power battery 14 is electrically connected to the No. 1 motor 11 and the No. 2 motor 10 through the inverter 13; the lock includes a ...
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Abstract
The invention discloses a multi-gear series-parallel type hybrid power system. The system is composed of an engine, an input shaft, a planetary gear train, a first motor, a second motor, an inverter, a power battery, locking devices, a first gear, a second gear, a third gear, a fourth gear, a fifth gear and clutches. The planetary gear train comprises a front-row sun gear, a front-row planet gear, a front-row gear ring, a planet carrier, a rear-row planet gear and a rear-row gear ring; the locking devices comprise a first locking device and a second locking device; the clutches comprise a first clutch and a second clutch. The hybrid power system is large in number of working modes, wherein the pure electric mode is used more, so that the system is applicable to a plug-in hybrid power vehicle as well; by means of the system, when a vehicle is driven at a high speed, the mechanical path is adopted for transmitting the power instead of using the electric path, the transmission efficiency in the high-speed traveling process of the vehicle is raised, meanwhile, the revolving speed requirement for the second motor can be reduced, and the miniaturization of the second motor is facilitated.
Description
technical field [0001] The invention relates to a power transmission system of a hybrid vehicle, in particular to a multi-gear hybrid hybrid system. Background technique [0002] The current hybrid hybrid technology is mainly represented by the Toyota hybrid system. When the system is running at high speed, there is a power cycle inside the planetary gear train, which results in low transmission efficiency under high-speed conditions; in addition, there is only a fixed speed ratio between the drive motor and the wheels of the system, which seriously limits the vehicle's pure Electric drive capability. It can be seen that the structure of the hybrid vehicle power coupling device still needs to be improved. Contents of the invention [0003] The purpose of the present invention is to provide a multi-gear series hybrid power system. [0004] The present invention consists of an engine, an input shaft, a planetary gear train, a No. 1 motor, a No. 2 motor, an inverter, a pow...
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