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A hybrid power circuit based on machine-hydraulic combined energy regeneration

A technology of energy regeneration and hybrid power, which is applied in the direction of hybrid vehicles, fluid hybrid vehicles, motor vehicles, etc., can solve the problem of affecting the driving performance and comfort of vehicles, low specific energy of hydraulic energy storage devices, and energy release of hydraulic energy storage devices. Fast speed and other issues to achieve the effect of improving driving performance

Inactive Publication Date: 2015-09-02
HANGZHOU DIANZI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As the energy storage element of hybrid power, the hydraulic energy storage device has the advantages of high specific power, long-term energy storage, and strong full charge and full discharge capabilities, but it also has two major disadvantages: 1. The specific energy of the hydraulic energy storage device is very low
2. The energy release speed of the hydraulic energy storage device is too fast, which affects the driving performance and comfort of the vehicle

Method used

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  • A hybrid power circuit based on machine-hydraulic combined energy regeneration
  • A hybrid power circuit based on machine-hydraulic combined energy regeneration
  • A hybrid power circuit based on machine-hydraulic combined energy regeneration

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Embodiment Construction

[0023] Such as figure 2 As shown, a hybrid power circuit with machine-hydraulic combined energy regeneration includes an engine EM, a two-way hydraulic pump / motor PM1, a flywheel energy storage device, a safety valve group, an oil supplement module, a hydraulic energy storage device, and a hydraulic motor PM2. The output shaft of the engine EM is connected to the input shaft of the first clutch CL1, the output shaft of the first clutch CL1 is connected to the input shaft of the two-way hydraulic pump / motor PM1, the output shaft of the two-way hydraulic pump / motor PM1 is connected to the input shaft of the second clutch CL2 connection, the output shaft of the second clutch CL2 is connected to the flywheel FL1, the safety valve group, the oil supply module, and the hydraulic motor are connected across the closed circuit, the hydraulic motor PM2 is connected to the load FL2, and the main circuit between the oil supply module and the hydraulic motor Bridge the hydraulic energy st...

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Abstract

The invention discloses a hybrid power loop based on machine-hydraulic joint energy regeneration. The existing technology has two disadvantages: firstly, a hydraulic energy storage device has very low specific energy; secondly, the hydraulic energy storage device releases energy too fast, which influences the drivability and comfort. The loop comprises an engine, a two-way hydraulic pump or motor, a flywheel energy storage device, a relief valve group, an oil-filling module, a hydraulic energy storage device, and a hydraulic motor. In the hydraulic hybrid power loop, the invention combines with a flywheel to store energy, which improves the specific energy of the hydraulic energy storage device and makes the specific energy of the joint energy storage device greater than that of an individual hydraulic energy storage device. Speed of releasing the oil liquid is controlled through a valve-controlled hydraulic energy storage device to improve the drivability of a vehicle. Additionally, the capacity adjusting valve and the energy storage device constitute a self-adaptive energy storage device loop to absorb the system fluid pulsation.

Description

technical field [0001] The invention relates to a hydraulic hybrid power circuit, which is a hydraulic hybrid power circuit based on machine-hydraulic combined energy regeneration. Background technique [0002] In hybrid vehicles and construction machinery, in addition to the main power source (engine), there is also an auxiliary power source. The auxiliary power source is essentially a braking energy recovery and reuse device, including energy storage components, related control devices and braking energy regeneration strategies. When the vehicle brakes, the auxiliary power source recovers the kinetic energy of the vehicle and stores it in the energy storage element; when the vehicle starts or accelerates, the auxiliary power source releases energy to speed up the vehicle's start or acceleration process. According to the physical form of energy stored in the energy storage components, hybrid power mainly includes three categories: electric hybrid (battery energy storage), ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K6/12
CPCY02T10/92Y02T10/6208Y02T10/62
Inventor 许明倪敬陈国金
Owner HANGZHOU DIANZI UNIV
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