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Method for operating cooling system for hybrid electric vehicle comprising liquid coolant transfer circuit

A hybrid vehicle and cooling circuit technology, applied in the control of coolant flow, electric vehicles, cooling device control devices, etc., can solve problems such as inability to start in electric mode, reduce pollutant emissions, and accelerate temperature rise High and efficient effect

Active Publication Date: 2019-09-03
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the temperature is low, usually below -20°C, it sometimes happens that starting in electric mode is not possible due to atmospheric conditions

Method used

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  • Method for operating cooling system for hybrid electric vehicle comprising liquid coolant transfer circuit
  • Method for operating cooling system for hybrid electric vehicle comprising liquid coolant transfer circuit
  • Method for operating cooling system for hybrid electric vehicle comprising liquid coolant transfer circuit

Examples

Experimental program
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Effect test

Embodiment Construction

[0070] figure 1 An exemplary embodiment of a cooling system 10 for a hybrid vehicle (not depicted) is depicted.

[0071] Such a hybrid vehicle is also called “PHEV”, which stands for “plug-in hybrid electric vehicle”, and is characterized in that it comprises, on the one hand, an internal combustion engine 12 and, on the other hand, an electric motor 14 .

[0072] Hybrid vehicles can be used in various modes of operation, including:

[0073] - electric mode, sometimes referred to as "ZEV" (which stands for Zero Emission Vehicle) mode, in which the vehicle is propelled and / or driven by the electric motor without the intervention of the internal combustion engine;

[0074] - Internal combustion engine mode, in which the vehicle is driven and / or propelled solely by the internal combustion engine without the intervention of the electric motor;

[0075] - Hybrid mode, in which the vehicle is simultaneously driven and / or propelled by the internal combustion engine and the electri...

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PUM

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Abstract

A method for operating a cooling system comprises at least the following steps carried out when a vehicle is started: a first step (E1) which consists in checking whether the temperature of the liquidcoolant in a low-temperature cooling circuit is lower than a working temperature of a high-voltage battery of an electric motor; when the temperature of the liquid coolant in the low-temperature cooling circuit is lower than the working temperature of the battery, a second step (E2) which consists in starting a heat engine; a third step (E3) consisting in opening control means of a transfer circuit in order to cause liquid coolant to flow between a high-temperature cooling circuit and the low-temperature cooling circuit, thus causing the temperature of the liquid coolant in the low-temperature cooling circuit to rise faster in order to heat the battery until it reaches at least the working temperature.

Description

technical field [0001] The invention relates to a method for operating a hybrid vehicle cooling system comprising a liquid coolant transfer circuit. [0002] The invention relates more particularly to a method for operating a cooling system of a hybrid vehicle comprising at least an internal combustion engine and an electric motor, the cooling system comprising at least: [0003] - a high-temperature cooling circuit for cooling the internal combustion engine and a low-temperature cooling circuit for cooling the electric motor and associated high-voltage battery, and [0004] - A liquid coolant transfer circuit connecting the high temperature cooling circuit and the low temperature cooling circuit and comprising regulating means for controlling the circulation of liquid coolant in the transfer circuit. Background technique [0005] Such cooling systems fitted to hybrid vehicles, also known as "PHEV", which stands for "Plug-in Hybrid Electric Vehicle", are known from the prio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/00B60L58/26F01P7/16H01M10/625H01M10/663H01M10/6568H01M10/613
CPCB60H1/00278F01P7/165F01P2037/02F01P2050/24H01M10/625H01M10/663H01M10/6568H01M10/613B60H1/00885B60H2001/00307B60L58/26Y02T10/70Y02E60/10
Inventor E·安德烈斯O·贝斯巴尔特
Owner RENAULT SA
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