Drive method of hybrid power drive system

A driving method and driving system technology, which are applied to the arrangement of multiple different prime movers and power plants of hybrid vehicles and general power plants, can solve problems affecting normal operation, etc., achieve convenient control, avoid speed control, The effect of improving energy utilization

Active Publication Date: 2009-02-25
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the outer ring of the overrunning clutch is reversed, such as when the vehicle is in reverse, the overrunning clutch may also automatically switch from the overrunning state to the engaged state, thereby affecting normal operation
When the inner ring needs to work, it may rotate faster than the outer ring and be in a state of engagement, making the inner ring and outer ring interfere with each other

Method used

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  • Drive method of hybrid power drive system
  • Drive method of hybrid power drive system
  • Drive method of hybrid power drive system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0036] figure 1 is a sectional view of the three-state overrunning clutch according to the first embodiment of the present invention. The three-state overrunning clutch includes an outer ring 1, an inner ring 2, and a plurality of sprags 3 located between the outer ring 1 and the inner ring 2, which are located between the outer ring 1 and the inner ring 2 and hold the plurality of wedges through holding holes. A cage 4 for the wedge 3 . The first working surfaces 31 of the plurality of wedges 3 permanently contact the working surface of the outer ring 1 , and the second working surfaces 32 of the plurality of wedges 3 can contact or leave the inner ring 2 through rotation. working surface.

[0037] Specifically, the working surface of the outer ring 1 has a plurality of arc grooves 11, and each arc groove 11 is matched with the first working surface 31 of a corresponding wedge 3, and the first The working surface 31 is held in the arc groove 11 .

[0038] Such as Figur...

no. 2 example

[0049] figure 2 Shown is a three-state overrunning clutch according to a second embodiment of the invention. Compared with the above-mentioned first embodiment, the difference is that: an arc groove 21 is provided on the working surface of the inner ring 2, and the first working surface 31 of the wedge 3 is also held in the arc groove 21, so that by holding The frame 4 can rotate the wedge 3 around its first working surface 31, and its working method is the same as that of the above-mentioned first embodiment.

[0050] In addition, in this second embodiment, the pre-tension spring 5 can simply use a contracted coil spring, the coil spring 5 passes through the through hole provided in the wedge 3, and the first working surface 31 of the wedge 3 Firmly held in the arc groove 21, and through the design of the position of the through hole on the wedge 3, the pre-tightening spring 5 can make the wedge 3 have a tendency to rotate towards the wedging direction.

no. 3 example

[0052] image 3 Shown is a three-state overrunning clutch according to a third embodiment of the present invention. Compared with the first embodiment above, the difference is that the cage 4 is a double cage structure, including an outer cage 41 and an inner cage 42 . Through this double cage structure, the bearing capacity of the three-state overrunning clutch of the present invention can be improved and its service life can be prolonged.

[0053] Wherein the plurality of tabs 6 protruding outward in the axial direction from the inner cage 42 are the same as the first embodiment. When the inner cage 42 rotates relative to each other, the outer cage 41 can rotate correspondingly with the wedge 3 without affecting the rotation of the wedge 3 .

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PUM

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Abstract

The invention provides a method for driving a hybrid drive system, wherein the drive system comprises a first drive source with an outputting shaft, a second drive source with an outputting shaft, a drive shaft connected to the outputting shaft of the second drive source, and a clutch connecting the outputting shaft of the first drive source and the outputting shaft of the second drive source, wherein, the clutch is a three-state outrunning clutch with an outrunning state, a jointing state and a two-way separating state. The method comprises the following steps: according to different operating conditions of the drive system, the three-state outrunning clutch is controlled to be in the outrunning state, the joint state and the two-way separating state respectively; and when the three-state outrunning clutch is in the two-way separating state, the two drive sources can run independently without interference or resistance, thereby increasing the utility rate of energy and facilitating control.

Description

technical field [0001] The invention relates to a driving method of a hybrid drive system. Background technique [0002] Hybrid vehicles use two different power sources at the same time. According to the different connection methods of the power system, they can be mainly divided into three structural forms, namely series, parallel and hybrid. [0003] The feature of the series structure is compounding in the form of electricity, the engine directly drives the generator to supply power to the energy storage device and the motor, and the motor is used to drive the wheels; the feature of the parallel structure is compounding in the form of mechanical, the engine is connected to the drive shaft, and the motor can simultaneously Used as a motor and generator to balance the load on the engine. [0004] One of the hybrid modes that appear in practice is to realize the power distribution of each power unit through a planetary gear mechanism. In this structure, the engine is conne...

Claims

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Application Information

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IPC IPC(8): F16D41/07B60K6/20
CPCY02T10/6243Y02T10/623
Inventor 王传福罗红斌汤小华宋佑川廖云浩刘亮
Owner BYD CO LTD
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