Drive control method of hybrid power drive system

A drive system and hybrid technology, which is applied to the arrangement of multiple different prime movers and power plants of hybrid vehicles and general power plants, can solve problems such as complex control methods, meet the demand power, and achieve maximum energy efficiency. the effect of using

Active Publication Date: 2009-06-03
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this mode, a part of the engine output power is always used by the first motor to charge the battery or used by the second motor for electric use. The control method in this mode is quite complicated

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0033] 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.

[0034] 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 .

[0035] Such as Figure...

no. 2 example

[0046] 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.

[0047] 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

[0049] 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.

[0050] 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 drive control method of a hybrid power drive system. The drive system comprises an energy storage device, a first motor, a second motor, an engine, a clutch and a drive shaft, the engine is interconnected with the first motor in series; output shafts of the first motor and the second motor are connected to the clutch; the first motor and the second motor are electrically connected to the energy storage device; the drive shaft is connected to the output shaft of the second motor, wherein, the clutch is a tristate overrunning clutch. The method comprises the following steps: controlling the drive system to be in a pure electromotive operating condition, a serial connection operating condition, a series parallel connection operating condition or a parallel connection operating condition according to power demand of the drive system and an energy storage condition of the energy storage device, and controlling power outputs of the first motor, the second motor and the engine in the series parallel connection operating condition or the parallel connection operating condition. The drive control method helps effectively exert the efficiency of the hybrid power drive system and reduce pollutants discharge, which is good for environmental protection.

Description

technical field [0001] The invention relates to a drive control method of a hybrid power 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 eng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60K6/383B60K6/44B60W20/10B60W20/20B60W20/40
CPCY02T10/623Y02T10/6243Y02T10/62
Inventor 龚剑
Owner BYD CO LTD
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