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公开(公告)号：US12113245B1
公开(公告)日：2024-10-08
申请号：US18643134
申请日：2024-04-23
IPC分类号： H01M50/572 , H01M50/166 , H01M50/342
CPC分类号： H01M50/572 , H01M50/166 , H01M50/342 , H01M2200/20
摘要： The present invention discloses an electrochemical cell design that safely discharges after cell venting. The cell includes a housing and a lid assembly connected to the housing via a vent. The housing houses an electrode assembly with a first electrode separated from a second electrode by a separator. The first electrode is electrically connected to the housing, and the second electrode is electrically connected to the lid assembly structure. The cell has a non-venting configuration characterized by the vent connecting the lid assembly to the housing such that the internal pressure is maintained at a pressure above atmospheric pressure. A venting configuration is characterized by (A) the vent releasing the housing from the lid assembly when a predetermined internal pressure is exceeded; (B) venting the internal pressure; and (C) the venting dislodging the lid assembly such that it makes electrical contact with the housing, thus discharging the cell.
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公开(公告)号：US20240304865A1
公开(公告)日：2024-09-12
申请号：US18597828
申请日：2024-03-06
IPC分类号： H01M10/0569
CPC分类号： H01M10/0569 , H01M2300/0037
摘要： The present invention discloses ionically conducting electrolytes that include a liquefied gas solvent displaying low global warming potential (GWP) and low flammability while also generating favorable solid-electrolyte interphases in an electrochemical device to maintain high performance and cycle life. Ionically conducting electrolytes include a multi-component solvent mixture with a low-GWP solvent and non-low GWP solvent. The overall GWP of the multi-component solvent mixture is at least 50% less than the GWP of the non-low GWP solvent alone.
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公开(公告)号：US20240356182A1
公开(公告)日：2024-10-24
申请号：US18643134
申请日：2024-04-23
IPC分类号： H01M50/572 , H01M50/166 , H01M50/342
CPC分类号： H01M50/572 , H01M50/166 , H01M50/342 , H01M2200/20
摘要： The present invention discloses an electrochemical cell design that safely discharges after cell venting. The cell includes a housing and a lid assembly connected to the housing via a vent. The housing houses an electrode assembly with a first electrode separated from a second electrode by a separator. The first electrode is electrically connected to the housing, and the second electrode is electrically connected to the lid assembly structure. The cell has a non-venting configuration characterized by the vent connecting the lid assembly to the housing such that the internal pressure is maintained at a pressure above atmospheric pressure. A venting configuration is characterized by (A) the vent releasing the housing from the lid assembly when a predetermined internal pressure is exceeded; (B) venting the internal pressure; and (C) the venting dislodging the lid assembly such that it makes electrical contact with the housing, thus discharging the cell.
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公开(公告)号：US20240291049A1
公开(公告)日：2024-08-29
申请号：US18584244
申请日：2024-02-22
IPC分类号： H01M10/42 , H01M10/0567
CPC分类号： H01M10/4235 , H01M10/0567
摘要： The present invention discloses methods and materials to add a polymer material to a liquified gas electrolyte solution for use in an electrochemical energy storage device such as a lithium-ion battery or related technology to further improve the battery cell's safety properties. An example device includes an ionically conducting electrolyte comprised of a liquefied gas solvent, a salt, and a polymer. The liquefied gas solvent has a vapor pressure above 100 kPa at a temperature of 293.15 K, and the polymer is at low enough concentration that it is fully dissolved in the liquefied gas solvent. The device may include an anode, a cathode, and a separator layer in contact with the ionically conducting electrolyte. A housing may enclose the ionically conducting electrolyte, the anode, the cathode and the separator layer.
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公开(公告)号：US12125989B2
公开(公告)日：2024-10-22
申请号：US18584244
申请日：2024-02-22
IPC分类号： H01M10/42 , H01M10/0567
CPC分类号： H01M10/4235 , H01M10/0567
摘要： The present invention discloses methods and materials for adding a polymer material to a liquified gas electrolyte solution for use in an electrochemical energy storage device such as a lithium-ion battery or a related technology to further improve the battery cell's safety properties. An example device includes an ionically conducting electrolyte comprised of a liquefied gas solvent, a salt, and a polymer. The liquefied gas solvent has a vapor pressure above 100 kPa at a temperature of 293.15 K, and the polymer is at a low enough concentration that it is fully dissolved in the liquefied gas solvent. The device may include an anode, a cathode, and a separator layer in contact with the ionically conducting electrolyte. A housing may enclose the ionically conducting electrolyte, the anode, the cathode and the separator layer.
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公开(公告)号：US12080851B1
公开(公告)日：2024-09-03
申请号：US18597828
申请日：2024-03-06
IPC分类号： H01M10/00 , H01M10/0569
CPC分类号： H01M10/0569 , H01M2300/0037
摘要： The present invention discloses ionically conducting electrolytes that include a liquefied gas solvent displaying low global warming potential (GWP) and low flammability while also generating favorable solid-electrolyte interphases in an electrochemical device to maintain high performance and cycle life. Ionically conducting electrolytes include a multi-component solvent mixture with a low-GWP solvent and non-low GWP solvent. The overall GWP of the multi-component solvent mixture is at least 50% less than the GWP of the non-low GWP solvent alone.
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