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Method for estimating the temperature at the core of a battery cell

A core and estimated value technology, applied in the field of estimating the temperature at the core of the battery cell, can solve problems affecting the accuracy and reliability of the temperature estimated value

Active Publication Date: 2017-07-04
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this estimation method, which takes into account the heat generated inside the battery, ignores the problem of heat diffusion in the battery, which adversely affects the accuracy and reliability of the obtained temperature estimates

Method used

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  • Method for estimating the temperature at the core of a battery cell
  • Method for estimating the temperature at the core of a battery cell
  • Method for estimating the temperature at the core of a battery cell

Examples

Experimental program
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Embodiment Construction

[0023] figure 1 A battery module 10 is shown in which four charge storage elements 11 or battery cells are packaged. A temperature sensor 12 is placed on an outer wall 13 of the battery module 10 in order to supply a temperature measurement on the outer wall 13 of the battery module 10 . On the other hand, the temperature at the core of the battery module cannot be measured. In order to estimate this temperature, it is proposed according to the invention to use a measurable relevant variable, in this case the temperature of the outer wall of the battery module.

[0024] For this purpose, according to the invention, it is planned to develop a specific processing module or "software sensor", also called an observer, so as to implement a model that reproduces in a virtual way the dynamics of heat dissipation in the battery module ( This model will be described in more detail below). This virtual sensor is connected in a servo control loop with a physical sensor for measuring t...

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PUM

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Abstract

The invention relates to a method for estimating the temperature at the core of a module (10) of a traction battery of an electric or hybrid vehicle in which a plurality of charge accumulating elements (11) are housed, characterized in that The temperature (y) is measured at the level of an outer wall (13) of the battery module (10) and is characterized in that an estimate of the temperature at the core is calculated; based on the temperature measurement (y) for the battery Formulation (I) is performed at the core of the module (10).

Description

technical field [0001] The invention relates to a method for estimating the temperature at the core of a traction battery module of an electric vehicle or a hybrid vehicle, in which a plurality of charge storage elements (commonly called cells) are packaged in one module. [0002] One application of the method according to the invention relates to the management of a battery having a plurality of charge storage elements, notably in an electric vehicle or a hybrid vehicle, during its operation. More specifically, it is intended to be applied in the operation of the battery in order to estimate in real time the internal temperature of these charge storage elements, notably in the context of optimizing energy and thermal management strategies to ensure the safety of the battery and the safety of the battery. Optimal use of energy potential. Background technique [0003] The traction battery used on an electric or hybrid vehicle is one of the most critical components of such a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/48H01M10/613H01M10/633H01M10/635B60L50/16
CPCH01M10/486H01M10/633H01M10/635H01M10/613Y02E60/10G01R31/36H01M10/425H01M10/625H01M2010/4271H01M2220/20Y02T10/70G01K1/20
Inventor M·德贝尔A·凯特菲-谢里夫G·科林Y·沙马亚尔
Owner RENAULT SA