Energy-saving-control-oriented hybrid electric vehicle energy and heat integrated model

A hybrid electric vehicle, energy-saving control technology, applied in the direction of hybrid electric vehicles, motor vehicles, control devices, etc., can solve the difficult control system design of partial differential equations, difficult to ensure model consistency, unsuitable for real-time control algorithm design and development, etc. question

Active Publication Date: 2021-02-19
JILIN UNIV
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Problems solved by technology

This invention effectively improves the single-stage accuracy of the lumped parameter dynamic mathematical model, but the complex partial differential equation considering heat transfer is difficult to apply to the design of the control system
Moreover, for hybrid electric vehicles, it is difficult to accurately describe the optimal control indicators that are highly related to temperature, such as the instantaneous fuel consumption of the engine and the thermal d

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  • Energy-saving-control-oriented hybrid electric vehicle energy and heat integrated model
  • Energy-saving-control-oriented hybrid electric vehicle energy and heat integrated model
  • Energy-saving-control-oriented hybrid electric vehicle energy and heat integrated model

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specific Embodiment approach

[0114] The established hybrid vehicle model receives the driver's power demand under actual driving conditions, and the power demand is used as the input of the power chain dimension of the integrated model of energy and heat, which includes engine speed and torque information, as well as the power of the generator and motor. Power requirement information. As the source of the power chain and heat chain, the engine not only receives power drive information, but also serves as the only source of heat supply for the air-conditioning heat transfer model, so that its fuel consumption and heat chain circuit show a strong coupling relationship. The integrated model of energy and heat proposed by the present invention not only receives the driver’s power demand, but also receives the cockpit setting temperature information and air-conditioning fan command information under the driver’s heating demand as the input of the thermal chain dimension of the model, and takes into account the ...

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Abstract

The invention discloses an energy-saving control-oriented hybrid electric vehicle energy and heat integrated model, and belongs to the technical field of hybrid electric vehicle modeling. The invention aims to provide the energy-saving-control-oriented hybrid electric vehicle energy and heat integrated model of each power transmission node module in a power chain from a power driving device such as an engine and a motor to wheels. A model establishing method comprises the steps of determining power chain input, describing an energy flow state in the power chain, establishing a battery model, establishing an engine energy consumption and temperature model, establishing an air conditioner heat transfer model, receiving a heat chain input instruction and establishing a cockpit temperature model. According to the method, the coupling relation among the cab heat supply requirement, the driver power requirement and the vehicle energy consumption under the high and cold weather condition is established, the soft measurement of part of important thermodynamic variables is achieved, and support is provided for driver comfort evaluation.

Description

technical field [0001] The invention belongs to the technical field of hybrid electric vehicle modeling. Background technique [0002] A hybrid electric vehicle is a complex "mechanical-electrical-thermal" integrated system that realizes energy flow and heat transfer. Among them, "energy" refers to the mechanical energy provided by the vehicle power chain (engine, motor, etc.) to drive the vehicle, and "heat" refers to the heat energy transferred in the vehicle thermal chain (engine cooling system, air conditioning system, etc.). In a hybrid vehicle, the power drive device (such as an engine) is not only the source of the power chain that provides mechanical energy for the vehicle to travel, but also the source of the heat chain that transfers heat. The unsteady operation of the vehicle in cold weather is normal, and the energy consumption of the vehicle is not only directly related to the power demand of the driver in the transient driving state, but also seriously coupled...

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Application Information

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IPC IPC(8): B60W20/11B60W50/00G06F30/15G06F119/08G06F119/14
CPCB60W50/00B60W2050/0034B60W2050/0037B60W2050/0039B60W20/11G06F30/15G06F2119/08G06F2119/14
Inventor 宫洵汪介瑜麻宝林胡云峰刘奇芳高炳钊陈虹
Owner JILIN UNIV
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