Portable Vehicle Battery Jump Start Apparatus With Safety Protection
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Apr 10, 2025
app pub date -
Dec 17, 2024
filing date -
Dec 17, 2024
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Abstract
A hand held, portable jump starter device includes a housing having a multi-cell rechargeable battery including at least three battery cells connected in series, a USB input port for receiving a charging current from an external source to recharge the multi-cell rechargeable battery, and an output port for providing jump starting current to an external vehicle; a USB charge circuit connected to the USB input port, the USB charge circuit including a DC-to-DC converter circuit for upconverting an input voltage on the USB input port to a higher charging voltage for recharging the multi-cell rechargeable battery; a pair of series connected transistor devices coupled between the USB charge circuit and the multi-cell rechargeable battery for controlling current flow into and out of the multi-cell rechargeable battery; a control circuit for detecting the voltage of the multi-cell rechargeable battery and configured to turn off the USB charge circuit to prevent over charging of the multi-cell rechargeable battery if the detected voltage exceeds a threshold value; and a battery charge controller coupled to the multi-cell rechargeable battery and the pair of series connected transistor devices and configured to prevent over discharging of the multi-cell rechargeable battery.
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