Battery heat preservation method of electric vehicle

A technology for electric vehicle batteries and electric vehicles, which is applied to secondary batteries, circuits, electrical components, etc., can solve the problems of reduced discharge efficiency, reduced battery charge and discharge performance, and increased internal resistance, so as to improve thermal insulation efficiency and prolong thermal insulation time. , to ensure the effect of working temperature

Inactive Publication Date: 2021-03-19
福州市长乐区古槐星际商务咨询服务部
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a low temperature environment, the electrolyte moves slowly, which affects the movement activity of the electrolyte between the positive and negative electrodes, resulting in a decrease in batt

Method used

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  • Battery heat preservation method of electric vehicle
  • Battery heat preservation method of electric vehicle

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Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0028] It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0030] In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "...

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Abstract

The invention relates to a battery heat preservation method of an electric vehicle. The method comprises the steps: when a battery control system judges that a received temperature value is higher than a rated working temperature value of a battery, transmitting heat of the battery to a first phase change energy storage layer; when the temperature of a second phase change energy storage layer is higher than the external environment temperature, conducting the heat of the second phase change energy storage layer to a water tank through a heat exchange device; and when the temperature of the second phase change energy storage layer is lower than the temperature of the external environment, heating liquid in the water tank through a heating device, enabling the heated liquid to circularly heat a heat exchange pipeline through a water pump, and releasing heat to the second phase change energy storage layer. Heat is absorbed, stored and released through a heat preservation layer, the heat can be provided for the battery without additionally consuming electric energy, and the working temperature of the battery is maintained.

Description

technical field [0001] The invention relates to the technical field of battery heat management, in particular to a battery heat preservation method for an electric vehicle. Background technique [0002] The cruising range and battery life of electric vehicles are greatly affected by the ambient temperature, because chemical batteries, especially lithium batteries, the internal electrolyte undergoes chemical reactions, and a potential difference appears between the positive and negative electrodes to generate current. In a low temperature environment, the electrolyte moves slowly, which affects the mobility of the electrolyte between the positive and negative electrodes, resulting in a decrease in battery charge and discharge performance, a decrease in battery capacity, an increase in internal resistance, and a decrease in discharge efficiency, which in turn cannot guarantee the cruising range. Contents of the invention [0003] The purpose of the present invention is to pr...

Claims

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Application Information

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IPC IPC(8): H01M10/613H01M10/615H01M10/625H01M10/637H01M10/643H01M10/647H01M10/659H01M10/6554H01M10/6556H01M10/6568H01M10/657
CPCH01M10/613H01M10/615H01M10/625H01M10/637H01M10/643H01M10/647H01M10/6554H01M10/6556H01M10/6568H01M10/657H01M10/659Y02E60/10
Inventor 林雅娟
Owner 福州市长乐区古槐星际商务咨询服务部
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