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Battery temperature control method and device for new energy vehicle

A new energy vehicle and battery technology, applied in battery temperature control, secondary batteries, circuits, etc., can solve the problems of poor battery temperature control, affecting battery working efficiency, etc., and achieve fast control response, low cost, and accurate temperature control. Effect

Active Publication Date: 2021-04-06
BAIC MOTOR CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The battery temperature control of existing new energy vehicles is poor, which affects the working efficiency of the battery

Method used

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  • Battery temperature control method and device for new energy vehicle
  • Battery temperature control method and device for new energy vehicle

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Embodiment

[0073] Such as figure 1 with figure 2 As shown, the present invention provides a battery temperature control method for a new energy vehicle, including:

[0074] Obtain the refrigerant flow base value of the battery cooler according to the water inlet temperature value of the battery and the cell temperature value of the battery;

[0075] Obtain the refrigerant flow correction value of the battery cooler according to the superheat degree of the refrigerant outlet of the battery cooler;

[0076] The final value of the refrigerant flow of the battery cooler is obtained according to the basic value of the refrigerant flow and the correction value of the refrigerant flow.

[0077] In this embodiment, the basic value of the refrigerant flow rate of the battery cooler is obtained according to the temperature value of the water inlet of the battery and the temperature value of the battery cell, including:

[0078] Use the larger temperature value of the water inlet temperature va...

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Abstract

The invention discloses a battery temperature control method and device for a new energy vehicle, belonging to the technical field of battery temperature control. The method comprises the following steps: acquiring a basic value of refrigerant flow of a battery cooler according to a water inlet temperature value of a battery and a cell temperature value of the battery; acquiring a correction value of the refrigerant flow of the battery cooler according to the superheat degree of the refrigerant outlet of the battery cooler; and acquiring a final value of the refrigerant flow of the battery cooler according to the basic value of the refrigerant flow and the correction valuere of the frigerant flow. According to the method, the refrigerant flow of the battery cooler is dynamically adjusted according to the water inlet temperature value of the battery, the cell temperature value of the battery and the superheat degree of the refrigerant outlet of the battery cooler so as to meet requirements on thermal management of the battery.

Description

technical field [0001] The invention belongs to the technical field of battery temperature control, and more specifically relates to a battery temperature control method and device for a new energy vehicle. Background technique [0002] In pure electric vehicles and hybrid vehicles, the battery cooling cycle generally uses the refrigerant of the cockpit air-conditioning system to cool the battery, and the flow rate of the refrigerant directly determines the temperature of the battery. Since the battery must be able to work within a certain temperature range, In order to ensure the efficient operation of the battery, the control of the amount of refrigerant is particularly important in the control of new energy vehicles. The battery temperature control of existing new energy vehicles is poor, which affects the working efficiency of the battery. Contents of the invention [0003] The purpose of the present invention is to address the deficiencies in the prior art and provid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/625H01M10/63H01M10/635H01M10/6567H01M10/663
CPCH01M10/613H01M10/625H01M10/63H01M10/635H01M10/6567H01M10/663Y02E60/10
Inventor 刘欣李海生
Owner BAIC MOTOR CORP LTD
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