Electrochemical cell having a safety device
AssigneeJohnson Controls Technology Company
InventorsFeng Li, Thomas M. Watson
Life of this patent
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Abstract
An electrochemical cell is provided including, but not limited to, a can having a side wall that is coupled to a first end and having a cover at a second end of the can to close the second end of the can, a cell element within the can, electrolyte within the can, and a safety device. The can forms a vent at the first end configured to allow gases and/or effluent to exit the can once the pressure inside the can reaches a predetermined amount. The safety device is provided adjacent a first end of the cell element and between the cell element and the first end of the housing. The safety device is configured to exert an additional force on the vent to aid in the deployment of the vent.
Claims40
An electrochemical cell comprising:
- a can having a side wall that is coupled to a first end and having a cover at a second end of the can to close the second end of the can, wherein the can forms a vent at the first end configured to allow gases and/or effluent to exit the can once the pressure inside the can reaches a predetermined amount;
- a cell element within the can;
- electrolyte within the can;
- and
- a safety device provided adjacent a first end of the cell element and between the cell element and the first end of the housing, wherein the safety device is configured to exert an additional force on the vent to aid in the deployment of the vent.
An electrochemical cell comprising:
- a can having a side wall that is coupled to a first end and having a cover at a second end of the can to close the second end of the can, wherein the can forms a first vent at the first end configured to allow gases and/or effluent to exit the can once the pressure inside the can reaches a predetermined amount;
- a cell element within the can;
- electrolyte within the can;
- and
- a safety device in fluid communication with the first vent, wherein the safety device houses a suppressant which inhibits or limits the chance of a flame when electrolyte is released from the cell.
A method for controlling heat within an electrochemical cell, the electrochemical cell having a can having a side wall that is coupled to a first end and having a cover at a second end of the can to close the second end of the can, wherein the can forms a vent at the first end configured to allow gases and/or effluent to exit the can once the pressure inside the can reaches a predetermined amount, a cell element within the can, electrolyte within the can, and a safety device provided adjacent a first end of the cell element and between the cell element and the first end of the housing, the method comprising:
- exerting an additional amount of force onto the vent by the safety device in order to aid in the deployment of the vent.
A method for controlling heat within an electrochemical cell, the electrochemical cell having a can having a side wall that is coupled to a first end and having a cover at a second end of the can to close the second end of the can, wherein the can forms a first vent at the first end configured to allow gases and/or effluent to exit the can once the pressure inside the can reaches a predetermined amount, a cell element within the can, electrolyte within the can, and a safety device provided in fluid communication with the first vent, wherein the safety device houses a suppressant which inhibits or limits the chance of a flame when electrolyte is released from the cell, the method comprising:
- deploying the first vent once the pressure inside the can reaches a predetermined amount to allow gases and/or effluent to exit the can;
- and
- mixing the gases and/or effluent released from the can with suppressant housed by the safety device.
Dependencies are inferred from the claim text.