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Energy flow controlling method for parallel type mixed power system

A technology of a hybrid power system and a control method, applied in the field of energy flow control of a parallel hybrid power system, can solve the problem of not considering the state of battery storage and the like

Inactive Publication Date: 2008-02-20
NANJING VOCATIONAL UNIV OF IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it only considers controlling the engine, not the state of charge of the battery

Method used

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  • Energy flow controlling method for parallel type mixed power system
  • Energy flow controlling method for parallel type mixed power system
  • Energy flow controlling method for parallel type mixed power system

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Embodiment Construction

[0092] Fig. 1 is a block diagram of the control structure of the parallel hybrid power system according to the present invention. The entire control structure is divided into three layers: ① The required power controller is a high-level control layer, which is composed of a vehicle speed controller and a torque sensor. According to the road conditions and the current status of the vehicle, it sends out the command of the current required power of the vehicle in real time; ② The energy flow controller is The coordination management layer coordinates and distributes the power to the execution controller of the next layer according to the current power demanded by the upper control layer and the current running parameters of the car fed back from the lower control layer. ③Executive controller includes engine controller, which is responsible for providing information about the current working state of the engine, controlling engine speed and torque command; battery controller: incl...

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Abstract

The present invention discloses an energy control method for parallel power system combination that made up by an engine and storage batteries. The method is based on the considering of the engine and the storage batteries works on respective optimum working points and takes maintaining the charge status of the storage batteries as the priority for the distribution of energy flow, and then takes the most economic fuel of the whole vehicle as the goal to coordinate so as to realize the optimum energy of the combination energy system and the best of performance of the whole vehicle. The present invention can carry out optimum energy flow distribution between the engine and the storage batteries effectively, namely, the engine and the storage batteries are leaded to work on respective optimum working points, which increases the overall energy efficiency of the combination power system.

Description

technical field [0001] The invention relates to a power optimization selection of a hybrid power system composed of an engine and a storage battery, in particular to an energy flow control method of a parallel hybrid power system. Background technique [0002] A hybrid vehicle uses a traditional internal combustion engine and a battery as a power source, and drives the vehicle by mixing two different power systems. If the hybrid power is well matched, it can achieve the purpose of saving fuel and reducing exhaust pollution. Facing the depletion of global oil resources and the huge pressure of environmental protection, hybrid electric vehicles have become the research focus of domestic and foreign automobile manufacturers. [0003] The biggest difference between a hybrid system consisting of two energy sources and conventional cars and electric cars is that the energy flow through the propeller shaft to drive the wheels can come from the engine, the battery, or both at the sa...

Claims

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Application Information

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IPC IPC(8): B60W20/00B60W20/15B60W20/20
Inventor 王爱华杨微子
Owner NANJING VOCATIONAL UNIV OF IND TECH
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