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Battery with metalized film current collector having low internal resistance

A current collector and resistor technology, applied in the battery field of metallized thin film current collectors

Pending Publication Date: 2021-07-30
SOTERIA BATTERY INNOVATION GRP INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, as mentioned above, the only weight savings of such power cells are related to safety only through the increase in high internal resistance

Method used

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  • Battery with metalized film current collector having low internal resistance
  • Battery with metalized film current collector having low internal resistance
  • Battery with metalized film current collector having low internal resistance

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Embodiment Construction

[0069] A significant advantage of the present invention is the ability to provide a mechanism, through structural components, to cut off the conduction path in the event of an internal short circuit, thereby stopping or greatly reducing current flow that may generate heat within the target cell.

[0070] Another advantage is the ability to provide this protective structural form within the lithium battery cell, which also provides beneficial weight and cost improvements for overall battery manufacturing, shipping and utilization. Thus, another advantage is to create and maintain an internal fuse structure within the target cell until it needs to be activated. Another advantage is to provide a low internal resistance high-power battery with a high-resistance thin metal current collector for fast charging and discharging capabilities. Yet another advantage would be the ability to utilize flammable organic electrolyte materials within the battery without any significant propensit...

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Abstract

Provided is a lithium electrochemical energy generating and storage device comprising an anode, a cathode, at least one separator present between said anode and said cathode, an electrolyte, and at least one current collector in contact with at least one of said anode and said cathode; said current collector exhibits a resistivity greater than 0.005 Ohm / square; and said electrochemical device exhibits a 2 C capacity greater than 70% of the capacity measured at 0.5 C, such current collector further comprising an insulating support layer coated with at least one conductive layer, wherein said conductive layer has a thickness that is less than 2 microns.

Description

technical field [0001] The present technology involves improvements in the structural components and physical properties of lithium battery articles to provide lower electrical resistance than standard rechargeable battery types such as high power lithium ion battery types as one example. This structural modification involves a thinner metal current collector structure that increases the internal resistance level of the battery cell and is accompanied by a reduction in the internal resistance of the battery cell by modifying the electrode coating as an adjustment in this regard. Utilize low thickness electrodes, high porosity electrodes, higher conductivity electrode coatings, multilayer electrode coatings with varying levels of conductive material, and patterned coatings with regions of varying resistance for orientation results, all in this regard Works simultaneously with thin metallized current collectors. The present invention also provides battery articles comprising th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/66H01M10/0525H01M10/058
CPCH01M4/667H01M4/661H01M10/058H01M10/0525H01M4/64H01M4/13Y02E60/10
Inventor 布莱恩·G·莫林卡尔·C·胡
Owner SOTERIA BATTERY INNOVATION GRP INC