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Device for heating a battery

A heating device and battery technology, applied in battery/fuel cell control devices, secondary batteries, battery temperature control, etc., can solve problems such as energy storage stage limitations

Active Publication Date: 2018-03-09
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regardless, the storage phase of energy in phase change materials is necessarily limited due to outward heat loss

Method used

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  • Device for heating a battery
  • Device for heating a battery
  • Device for heating a battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] figure 1 The diagram shows schematically a heating device 1 associated with a lithium-ion battery 2 on the one hand and with a compartment 3 of a motor vehicle on the other hand.

[0040] The device 1 comprises a reactor 4 and a heat transfer loop 5 . The reactor 4 is arranged in the motor vehicle and away from the battery 2 in order to avoid any interaction between these two systems.

[0041] The heat transfer circuit 5 transports a heat transfer fluid (for example water containing ethylene glycol), which is moved by a pump 6 mounted on the heat transfer circuit 5 .

[0042] The heat transfer circuit 5 comprises a first part 51 passing through the reactor 4 , said first part being equipped with a heat exchanger 7 extending inside the reactor 4 . The heat exchanger 7 thus makes it possible to exchange heat between the heat transfer fluid circulating in the heat transfer circuit 5 and the reactor 4 , especially when an exothermic thermochemical reaction takes place in ...

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PUM

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Abstract

The invention relates to a device for heating a battery (2) comprising at least one metal-ion accumulator, comprising: at least one reactor (4); and at least one circuit (5) transporting a heat-transfer fluid, said circuit (5) including a first portion (51) passing through the reactor (4), which is able to exchange heat with said circuit (5), and a second portion (52) able to exchange heat with the battery (2), said reactor (4) including a first reactant able to react with a second reactant via an exothermal thermochemical reaction.

Description

technical field [0001] The invention relates to a heating device for heating a battery comprising at least one accumulator, more precisely a heating device for heating a battery comprising at least one metal-ion accumulator, for example a lithium-ion accumulator, which heating device is mounted on a motor vehicle, Especially on motor vehicles with hybrid or electric traction chains. Background technique [0002] Lithium-ion batteries contain electrochemical cells whose optimum operating temperature range is limited. [0003] If the temperature is too high (typically greater than 45°C), the electrochemical cell ages prematurely. Conversely, if the temperature is too low, the internal resistance of the electrochemical cell greatly increases. [0004] Furthermore, the extractable power of Li-ion batteries is limited in order to limit lithium deposition in the form of Li dendrites, which can penetrate the separator and thereby promote short circuits. Also applied to the heati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/615H01M10/625H01M10/6568H01M10/6595B60L11/18
CPCB60L58/27H01M10/615H01M10/625H01M10/6568H01M10/6595H01M10/60Y02E60/10Y02T10/70
Inventor A·戴迪耶S·拉利希Z·曼维埃尔F·普拉
Owner RENAULT SA