Battery Gassing Mitigation Through Catalyzed Precipitation

A battery and catalyst technology, applied in the field of battery gas evolution mitigation through catalytic precipitation, can solve the problem that the battery is no longer usable

Inactive Publication Date: 2016-06-22
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the pressure relief vent is activated, the battery is generally considered to be no longer usable as the external environment may have contaminated the inside of the battery

Method used

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  • Battery Gassing Mitigation Through Catalyzed Precipitation
  • Battery Gassing Mitigation Through Catalyzed Precipitation
  • Battery Gassing Mitigation Through Catalyzed Precipitation

Examples

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Embodiment Construction

[0018] As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.

[0019] Battery gassing in rechargeable or secondary batteries (eg, Li-ion or NiMH) can be very problematic. As described in the background, gassing can lead to internal pressures that can cause degraded cycles. Pressure may also cause rupture of the battery case or may require activation of a disposable pressure relief valve. Activation of the pressure relief vent would essentially re...

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PUM

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Abstract

A secondary battery including a positive and negative electrode, a separator, an electrolyte, and a gas mitigation device is disclosed. The gas mitigation device may include a catalyst configured to catalyze a reaction to form a solid phase material from one or more gases generated during operation of the battery. The battery may also include a protective enclosure surrounding the catalyst, the protective enclosure being gas permeable and liquid impermeable and preventing contact between the catalyst and the electrolyte. The battery may further include a seed material configured to react with the one or more gases to form the solid phase material, which may also be included within the protective enclosure. The catalyst may include nickel nanoparticles or carbonic anhydrase and the seed material may include iron, magnesium, or calcium. In one embodiment, the solid phase material formed is a metal carbonate.

Description

technical field [0001] The present disclosure relates to battery gassing mitigation, eg, via catalyzed precipitation and phase transition. Background technique [0002] Electric vehicles (eg, hybrid electric vehicles, plug-in hybrid electric vehicles, and pure electric vehicles) are one of the transportation industry solutions to meet future increasing fuel economy standards. Electric vehicles typically rely on batteries, such as lithium-ion (Li-ion) and nickel-metal hydride (NiMH) batteries, to replace some or all of the vehicle's traction or auxiliary electrical loads. During use, sealed (eg, Li-ion) or resealable (eg, NiMH) cells can experience gassing as an unintended by-product of proper or improper handling. Over time, this outgassing can create significant internal pressure in the individual cells of the battery. [0003] This internal pressure can lead to a detrimental cycle of degradation as pressure changes will promote electrode damage. Such damage can be espec...

Claims

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Application Information

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IPC IPC(8): H01M10/52
CPCH01M10/523H01M10/4235Y02E60/10
Inventor 阿尔瓦罗·玛西亚
Owner FORD GLOBAL TECH LLC
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