Four-wheel drive hybrid electric vehicle thermal management system and control method thereof

A technology for hybrid electric vehicles and thermal management systems, applied to vehicle components, air handling equipment, heating/cooling equipment, etc., can solve the problems of dispersion, complex cooling and heating control, and the inability to fully utilize the mileage of hybrid vehicles, etc., to achieve shortening Development cycle, improvement of heating efficiency, effect of improvement of development efficiency

Active Publication Date: 2018-05-01
CHONGQING UNIV OF POSTS & TELECOMM
View PDF6 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For plug-in four-wheel drive hybrid vehicles that are between gasoline and pure electric vehicles, the number of components that need to be cooled increases, and there will be cross-control, and the control of cooling and heating becomes more complicated
The subsystems of the existing hybrid vehicle thermal management system are relatively scattered and isolated, and the waste heat of each subsystem cannot be effectively used for unified and integrated management
At present, most of the air-conditioning systems of hybrid electric vehicles use single cooling, and heating equipment (PTC) is used to heat the passenger compartment in winter. Give full play to the advantages of hybrid vehicle mileage and low emissions
At the same time, when the ambient temperature is relatively low, the battery cannot be charged and discharged normally, making it difficult to drive the motor to work

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Four-wheel drive hybrid electric vehicle thermal management system and control method thereof
  • Four-wheel drive hybrid electric vehicle thermal management system and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Example 1: When the ambient temperature is high in summer: the system switches from the standby state to the cooling demand state. At this time, when the passenger compartment needs to be cooled, the heat pump air-conditioning refrigeration circuit is turned on. At this time, the external heat exchanger 1 two-way valve 3 electric Compressor 4 liquid storage tank 5 internal evaporator 7 electronic expansion valve 8 water-cooled condenser 13 constitutes a heat pump refrigeration cycle. The low-temperature and low-pressure superheated gas from the internal evaporator 7 enters the liquid storage tank 5 for gas-liquid separation. After the liquid is separated, the dry superheated gas is sucked by the electric compressor 4 and compressed into high-temperature and high-pressure gas, which is discharged and then enters the outdoor heat exchanger to release heat. Condensation becomes supercooled liquid. The supercooled liquid becomes a low-temperature and low-pressure two-phase ...

example 2

[0049] Example 2: When the temperature is low in winter: the system state is switched from standby to heating mode. When the temperature of the battery temperature module is low, the battery preheating circuit is started to control the heating PTC: battery cooler 9 battery circuit water pump 10 heating PTC11 battery module 12 . Carry out preheating treatment to meet the battery operating temperature requirements. When the battery power is low and the car is in the engine mode, the system switches to the engine heating mode at this time, and the starting circuit: water-cooled condenser 13 engine module 14 engine circuit three-way valve 15 water pump 16 heating warm air core 17. Use the heat of the engine to The passenger compartment is heated.

[0050] When the battery is fully charged, the car is in pure electric mode, and the ambient temperature T Amb When ≥10°C, start the heat pump heating circuit: external heat exchanger 1 two-way valve 3 electric compressor 4 liquid stor...

example 3

[0053] Example 3: Ambient temperature T Amb When ≥10°C, adopt the corresponding mode according to the required heat load. When in the hybrid mode, when the load demand is large: start the heat pump air conditioning system and the waste heat recovery circuit for maximum heating; when the load demand is small: use start The waste heat recovery circuit reduces the start-up of the heat pump air-conditioning circuit and reduces energy consumption. If it is in pure electric mode at this ambient temperature, the compressor speed and temperature damper are controlled by starting the heat pump air-conditioning circuit and the motor waste heat recovery circuit, so as to achieve the purpose of precise and effective heating. When -5℃Amb When Amb When <-5°C, the heating efficiency of the heat pump air conditioner is low at this time. At this time, effective heating is carried out by starting the engine and heating the PTC.

[0054] 1. The present invention aims at the disadvantages that t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a four-wheel drive hybrid electric vehicle thermal management system and a control method thereof. The four-wheel drive hybrid electric vehicle thermal management system is mainly divided into four parts, namely, the heat pump air-conditioner part, a battery cooling part, a motor cooling part and an engine heating part. According to the four-wheel drive hybrid electric vehicle thermal management system, thermal management of refrigeration, heating, a battery and a motor of a hybrid electric vehicle adopts unified and integrated management, a heat pump technology is adopted, heat of a driving unit is recycled, a refrigeration mode and battery cooling are simultaneously taken into account; the motor cooling part is divided into cooling of a precursor motor part whichcomprises an electric generator and an IPU unit 1 and a cooling part of a precursor motor and a rear drive motor which comprises the rear drive motor, a charger and the IPU unit; an engine module represents a module with an engine cooling loop; and an internal evaporator and a heating heater core body are used as a part of the interior of a HVAC of an air hundling unit assembly. The four-wheel drive hybrid electric vehicle thermal management system is efficient, energy is saved, and the failure rate is reduced.

Description

technical field [0001] The invention belongs to the technical field of new energy electric vehicles, and in particular relates to a heat management system and a control method for a four-wheel-drive hybrid electric vehicle. Background technique [0002] Energy and environmental protection issues are global problems today. With global warming and environmental pollution gradually attracting people's attention, various countries have also put forward corresponding measures and development strategies for environmental protection. The governments and vehicle manufacturers of various countries are also paying more attention to the energy-saving and emission-reduction effects of vehicles. The energy consumption and pollution emissions of traditional fuel vehicles can no longer meet the increasingly stringent regulatory requirements. From now to around 2030, petroleum energy will gradually transform to clean energy, and new energy vehicles will surely become an important developmen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/00B60H1/03
CPCB60H1/00278B60H1/004B60H1/03B60H1/034Y02T10/88
Inventor 冯辉宗郎仲令袁荣棣禇良宇侯小康张芹
Owner CHONGQING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap