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Method for mitigating thermal propagation of batteries using heat pipes

A heat pipe and battery module technology, applied in battery/battery traction, electrical devices, secondary batteries, etc., can solve problems such as heat pipe operation failure

Active Publication Date: 2013-05-29
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One way of dealing with this challenge pursues post-process filling of heat transfer fluid into heat pipes; however, such methods are susceptible to heat transfer medium or component contamination, either of which can lead to failure of heat pipe operation

Method used

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  • Method for mitigating thermal propagation of batteries using heat pipes
  • Method for mitigating thermal propagation of batteries using heat pipes
  • Method for mitigating thermal propagation of batteries using heat pipes

Examples

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Embodiment Construction

[0053] First refer to figure 1. Vehicle 1 includes a hybrid propulsion system in the form of a battery pack 10 and a conventional ICE 20 . As mentioned above, such vehicles are called HEVs. Battery pack 10 utilizes a plurality of battery modules 100, typically arranged in a repeating array as shown. In a typical example, battery pack 1 may contain approximately 200 individual battery cells (discussed in more detail below), although those skilled in the art will understand that more or fewer battery cells may be required, which may Depends on the power required. Those skilled in the art will further appreciate that the vehicle 1 may also not require the ICE 20; in such a case, not an HEV, but an EV; either way is within the scope of the invention.

[0054] Next refer to Figure 2A , shows an exploded view showing the majority of a battery module 100 with passive heat spread mitigation features in accordance with one embodiment of the present invention. Those skilled in th...

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Abstract

A battery module with one or more battery cells and a heat exchange member placed in thermal communication with the battery cell, and a method of making a heat pipe system from the heat exchange member. The heat exchange member includes a container with a heat transfer fluid disposed therein. In one form, the heat transfer fluid is capable of going through a phase change as a way to absorb at least a portion of heat present in or generated by battery cell. A pressure control device cooperates with the container and heat transfer fluid such that upon attainment of a predetermined thermal event within the battery cell, the pressure control device permits liberation of at least a portion of the heat transfer fluid to an ambient environment, thereby relieving pressure on the container and removing some of the excess heat caused by the thermal event.

Description

technical field [0001] The present invention relates generally to passive thermal management of batteries and parts thereof, and in particular to the use of heat pipes with pressure relief means to reduce the risk of heat spread within the battery during thermal events. Background technique [0002] Collectively known as Rechargeable Energy Storage Systems (RESS), lithium-ion and associated batteries are used in automotive applications as a supplement in the case of hybrid electric vehicles (HEV), or in pure electric vehicles (EV), conventional internal combustion engines (ICE) case as an alternative. The ability to store energy passively from stationary and portable sources, as well as from recaptured kinetic energy provided by the vehicle and its components, makes batteries ideal as batteries for use in cars, trucks, buses, motorcycles and Part of the propulsion system of the relevant vehicle platform. In the context of this article, a battery cell is a single electroche...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/50B60L11/18
CPCY02E60/12B60L11/1877H01M10/5004Y02T10/7005H01M10/5055H01M10/5016H01M10/5032B60L3/0046B60L11/1874H01M10/5065Y02T90/16H01M10/5048B60L11/1879Y02T10/705B60L11/18B60L11/1875B60L2240/545H01M10/50F28D15/0233F28D15/06F28F2265/12H01M10/625H01M10/647H01M10/6552H01M10/6555H01M10/613H01M10/6562B60L58/27B60L50/66B60L50/64Y10T29/49353F28D15/0283B60L58/18B60L58/26Y02T10/70Y02E60/10
Inventor A.T.蒂蒙斯B.R.奇里斯蒂安
Owner GM GLOBAL TECH OPERATIONS LLC
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