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Battery heating control method and system in an electric vehicle

An electric vehicle and battery heating technology, which is applied in battery temperature control, battery/fuel cell control devices, electric vehicles, etc., can solve problems such as accidental failure of components, lack of battery heating function, and ensure the performance of the whole vehicle, so as to avoid The risk of not being able to heat the battery, improve adaptability, and ensure the effect of vehicle performance

Active Publication Date: 2018-09-14
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no effective control method for the heating function of the battery, and the accidental failure of related components is not considered when heating the battery, which is not conducive to ensuring the performance of the whole vehicle

Method used

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  • Battery heating control method and system in an electric vehicle
  • Battery heating control method and system in an electric vehicle
  • Battery heating control method and system in an electric vehicle

Examples

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Embodiment Construction

[0022] The content of the present invention will be further described in detail below in conjunction with preferred embodiments and accompanying drawings. Apparently, the embodiments described below are only used to explain the present invention, not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. It should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.

[0023] figure 1 It is a schematic flowchart of an embodiment of the method for controlling battery heating in an electric vehicle according to the present invention, and the method in this embodiment can be executed by a vehicle controller of the electric vehicle. Such as figure 1 As shown, the battery heating control method in the electr...

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Abstract

The invention relates to a battery heating control method in an electrically driven vehicle, and a system thereof. The method comprises the following steps: turning on a water pump and a heater when the lowest temperature of a battery cell is smaller than a first temperature threshold and the fault frequency of every preset part used for heating a battery in the current key period is smaller than a corresponding set value in order to enter a heating mode and heat the battery; and turning off the heater and the water pump if the lowest temperature of the battery cell is greater than a second temperature threshold or the parts used for heating the battery go wrong after the water pump and the heater are turned on in order to exit the heating mode and stop battery heating. The method and the system consider the fault frequencies of the parts used for heating the battery in the battery heating process control process, so the risk of unable battery heating caused by random failure of the parts is avoided, the use performance of the battery in low temperature environment can be maximally guaranteed through restarting the parts, and the adaptation ability of the electrically driven vehicle is improved.

Description

technical field [0001] The invention relates to the technical field of batteries of electric vehicles, in particular to a battery heating control method and system in electric vehicles. Background technique [0002] With the development of battery technology and the encouragement of the national electric vehicle policy, various electric vehicle models are launched in the automobile market. Reducing energy consumption and extending the driving mileage of electric vehicles has become the top priority of research and development by various automobile manufacturers. Among various technologies, the temperature control management system that actively cools the battery can realize the heating function of the battery at low temperature through the liquid cooling circulation system, the internal water pump and the heater connected in series, which is helpful for improving the range of use of electric vehicles and overcoming the impact of electric vehicles. It has a significant effect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/615H01M10/625H01M10/63B60L11/18
CPCB60L58/27H01M10/615H01M10/625H01M10/63Y02E60/10Y02T10/70
Inventor 岳彬彬王俊华魏丹肖凯张雄黄少堂
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
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