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Battery module

A battery module and power technology, applied in secondary batteries, battery pack components, circuits, etc.

Active Publication Date: 2017-05-10
GOOGLE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, the failure of the Li-ion cell can cause the discharge of the corrosive, conductive and flammable electrolyte at the vent member of the Li-ion cell, as well as the discharge of a small amount of molten aluminum at the vent member of the Li-ion cell, The emissions can affect the equipment in which it is installed
This emission can lead to a combustion event where the flammable fluid burns causing a fire in the power unit package which can spread to other packages and further afield

Method used

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Embodiment Construction

[0037] In some aspects, the present disclosure describes battery modules that include one or more flame arrestors that, in the event of a fire event (eg, one or more flammable fluids such as oxygen, electrolyte, or other) combustion due to overheating in the module) to prevent or reduce the flow of burning fluid from the module. Figure 1A A schematic plan view of the battery module 100 is shown. Generally speaking, the battery module 100 includes and encloses a plurality of power cells 102 and a battery management system (BMS) 104 located in a controlled environment.

[0038]In some aspects, the battery module 100 can maintain the power unit 102 and the BMS 104 in certain environmental conditions (eg, temperature and others) suitable for operation, such as the ambient environment. For example, the illustrated battery module 100 includes cooling equipment and power supply equipment, such as electrical connections, electrically coupled to the plurality of power cells 102 and e...

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Abstract

A battery module includes a housing that defines an inner volume and includes an airflow path from an aperture formed in a first end member of the housing, through the inner volume, and to an aperture formed in a second end member of the housing; a plurality of power cells mounted in the inner volume of the housing, each of the power cells including a vent member at an end of the power cell; and a flame arrestor mounted across the airflow path and between the plurality of power cells and the aperture formed in the second end member of the housing. The flame arrestor includes a screen that includes a plurality of fluid pathways sized to allow an airflow from the airflow path through the fluid pathways and sized to impede a combusted fluid to pass therethrough.

Description

technical field [0001] The present disclosure relates to a battery module, and more particularly, to a battery module for one or more power cells including a flame arrester. Background technique [0002] Power cells, such as lithium-ion cells, are a common type of rechargeable cell characterized by high energy density, no memory effect, and slow charge loss in idle state. Because of these advantages, lithium-ion cells are commonly used not only in consumer electronics devices, but also in military, electric vehicle, and aerospace applications. The performance of lithium-ion cells depends on both temperature and operating voltage. One concern with lithium-ion cells is that there are several failure mechanisms that can lead to catastrophic failure followed by a combustion event of a flammable fluid such as electrolyte. In fact, the failure of the Li-ion cell can cause the discharge of the corrosive, conductive and flammable electrolyte at the vent member of the Li-ion cell, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/12H01M10/6563H01M10/613
CPCH01M10/613H01M10/6563H01M50/383H01M50/394Y02E60/10H01M50/213H01M10/6566
Inventor R.L.布兰科D.亚历山大W.L.戴利P.H.高
Owner GOOGLE LLC
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