Metal-air battery power supply
AssigneeDreisbach Electromotive, Inc.
InventorMichael C. Cheiky
Life of this patent
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Abstract
A metal-air battery power supply for powering a device includes an enclosed container having an air inlet, an air outlet, and an array of connected metal-air battery cells therein. The container is sealed during non-use. When a power switch is turned on, the air inlet and air outlet are opened. At the same time, the residual low power of the battery cells is used to start a fan positioned near the air inlet. The fan initiates an air flow across the battery cells to further increase the power supply output. The power supply output is limited to the use requirement of the device by varying the fan speed in response to instructions from the device. Precise control of the battery cells' exposure to air extends the lifetimes of the cells.
Claims15
A metal-air battery power supply for powering a device, comprising:
- an enclosed power supply container, including:
- an air inlet for allowing air to flow into the power supply container;
- an air outlet for allowing air to flow out of the power supply container;
- baffle means for alternately opening and closing the air inlet and the air outlet;
- at least one metal-air battery cell located inside the power supply container for generating electrical power, said battery having a low level of residual power when said outlet is closed and the container is depleted of oxygen;
- a switch means for controlling the operation of the baffle means;
- a fan located near the air inlet that causes air to flow into the power supply container when the air inlet is open and the fan is running said fan being capable of start-up at the low, residual power level of said cell;
- fan starting means, in circuit connection with the fan and the switch means, for starting the operation of the fan solely by means of the low residual power in said cell in response to said switch means;
- and
- a first output means, in circuit connection with said battery cell, for outputting electrical power generated by the battery cell.
A method of supplying electrical power to a device, comprising:
- turning on a power switch;
- opening an air inlet and an air outlet in an enclosed sealed, oxygen depleted power supply container in response to the turning on of the power switch, the container having at least one metal-air battery cell having a low level of residual power therein;
- starting a fan positioned near the air inlet in response to the turning on of said switch using only the residual low power output by the battery cell, said fan creating an air flow into said container to increase the power output by the battery cell;
- and
- outputting the increased power output by the battery cell to the device to power the device.
Dependencies are inferred from the claim text.