Microprocessor controlled booster apparatus with polarity protection
First Claim
Patent Images
1. A booster apparatus, comprising:
- a first battery having a positive terminal and a negative terminal,a first cable coupled to the positive terminal of the first battery and being provided with means for connecting to a terminal of a depleted battery;
a second cable coupled to the negative terminal of the first battery and being provided with means for connecting to another terminal of the depleted battery;
a solid state switch coupled in series with one of the cables and the first battery;
a polarity sensing circuit coupled between the first cable and the second cable, the polarity sensing circuit providing an enable signal to place the solid state switch in a conducting state when a correct polarity connection is made between the first battery and the depleted battery;
a momentary switch connected between the first and second cable; and
means for interrupting current flow to the depleted battery when the momentary switch is depressed, wherein the means for interrupting current flow comprises a resistor and a capacitor coupled in series with the momentary switch between the first cable and the second cable and another switch having a control electrode coupled between the resistor and the capacitor and providing a disabling signal to the solid state switch when the momentary switch is depressed.
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Abstract
A polarity protection circuit for a battery booster device is provided. According to an exemplary embodiment, the polarity protection circuit is comprised of solid-state devices. Preferably no mechanical or electro-mechanical devices, such as solenoids are included in the polarity protection circuit. The polarity protection circuit is electrically connected to the battery to be charged and to the boosting battery. The polarity protection circuit prevents current flow between the batteries unless proper polarity is achieved.
120 Citations
39 Claims
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1. A booster apparatus, comprising:
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a first battery having a positive terminal and a negative terminal, a first cable coupled to the positive terminal of the first battery and being provided with means for connecting to a terminal of a depleted battery; a second cable coupled to the negative terminal of the first battery and being provided with means for connecting to another terminal of the depleted battery; a solid state switch coupled in series with one of the cables and the first battery; a polarity sensing circuit coupled between the first cable and the second cable, the polarity sensing circuit providing an enable signal to place the solid state switch in a conducting state when a correct polarity connection is made between the first battery and the depleted battery; a momentary switch connected between the first and second cable; and means for interrupting current flow to the depleted battery when the momentary switch is depressed, wherein the means for interrupting current flow comprises a resistor and a capacitor coupled in series with the momentary switch between the first cable and the second cable and another switch having a control electrode coupled between the resistor and the capacitor and providing a disabling signal to the solid state switch when the momentary switch is depressed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A booster apparatus, comprising:
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a first battery having a positive terminal and a negative terminal, a first cable coupled to the positive terminal of the first battery and being provided with means for connecting to a terminal of a depleted battery; a second cable coupled to the negative terminal of the first battery and being provided with means for connecting to another terminal of the depleted battery; a solid state switch coupled in series with one of the cables and the first battery; a polarity sensing circuit coupled between the first cable and the second cable, the polarity sensing circuit providing an enable signal to place the solid state switch in a conducting state when a correct polarity connection is made between the first battery and the depleted battery; and a user actuated safety switch having a normally open contact coupled between the first and second cables and providing a disabling signal to the solid state switch when actuated to a closed contact position, thereby placing the solid state switch in a non-conducting state. - View Dependent Claims (35, 36, 37, 38, 39)
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Specification