Dual voltage battery system and electronic switch therefor
First Claim
1. A dual voltage battery system, comprising:
- (a) first and second batteries of equal voltage rating,(b) first rectifier means interconnecting the positive terminals of the batteries,(c) second rectifier means interconnecting the negative terminals of the batteries,(d) first electrically actuated switch means releasably interconnecting one terminal of the first battery and the opposite polarity terminal of the second battery for connecting the batteries together in series,(e) first switch actuator means having an electric circuit connected to the first battery and operable by an impulse generated from an instantaneous voltage drop across said battery by connection of a load thereacross to activate the first switch means to connect the batteries together in series,(f) one of the rectifier means being arranged to block the higher voltage output of the second battery of the series from the first battery, and the other rectifier means being arranged to isolate the positive and negative terminals of the first battery from each other, and(g) electrical conductors connected across the first switch means and arranged for connection to the positive and negative output terminals of a source of battery charging voltage rated for charging one of said batteries.
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Accused Products
Abstract
A pair of batteries of equal voltage rating are connected together in parallel through isolation diodes and in series through a first silicon controlled rectifier, the gate electrode of which is connected to the positive terminal of the first battery through a second silicon controlled rectifier and the emitter-collector switch circuit of a switching transistor. The gate electrode of the second silicon controlled rectifier is connected to said positive terminal through a capacitor and said transistor switch. The base-emitter switch actuator circuit of the switching transistor is connected across the first battery in a manner to maintain the transistor normally activated, whereby the impulse generated from the instantaneous voltage drop across said first battery, upon energization of an electric load connected thereto, is applied through said transistor switch to the gate electrode of the second silicon controlled rectifier, activating the latter to supply power to the gate electrode of the first silicon controlled rectifier, thereby turning the latter on and connecting the pair of batteries together in series. Conductors connected across the first silicon controlled rectifier are arranged for connection to the output terminals of a conventional battery charging source, rated for charging one of the pair of batteries, the isolation diodes maintaining the batteries in parallel during charging.
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Citations
16 Claims
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1. A dual voltage battery system, comprising:
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(a) first and second batteries of equal voltage rating, (b) first rectifier means interconnecting the positive terminals of the batteries, (c) second rectifier means interconnecting the negative terminals of the batteries, (d) first electrically actuated switch means releasably interconnecting one terminal of the first battery and the opposite polarity terminal of the second battery for connecting the batteries together in series, (e) first switch actuator means having an electric circuit connected to the first battery and operable by an impulse generated from an instantaneous voltage drop across said battery by connection of a load thereacross to activate the first switch means to connect the batteries together in series, (f) one of the rectifier means being arranged to block the higher voltage output of the second battery of the series from the first battery, and the other rectifier means being arranged to isolate the positive and negative terminals of the first battery from each other, and (g) electrical conductors connected across the first switch means and arranged for connection to the positive and negative output terminals of a source of battery charging voltage rated for charging one of said batteries. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A dual voltage switch for connecting a pair of batteries of equal voltage rating selectively in series and in parallel for supplying dual voltages and for connecting the pair of batteries in parallel for charging from a conventional source of charging voltage, the switch comprising:
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(a) first positive and negative connectors arranged for connection of the positive and negative terminals respectively of a first battery, (b) second positive and negative connectors arranged for connection of the positive and negative terminals respectively of a second battery, (c) first rectifier means interconnecting the first and second positive connectors, (d) second rectifier means interconnecting the first and second negative connectors, (e) first electrically actuated switch means releasably interconnecting one of the connectors of the first pair of connectors and the opposite polarity connector of the second pair of connectors for releasably interconnecting a pair of batteries in series, (f) first switch actuator means having an electric circuit connected to the said one connector of the first pair of connectors and operable by an impulse generated from the instantaneous voltage drop across a battery connected thereto by connection of a load thereacross to activate the first switch means to connect the pair of batteries togther in series, (g) one of the rectifier means being arranged to block the higher voltage at one connector of the second pair of connectors from the corresponding polarity connector of the first pair of connectors when the first switch means is activated, and the other rectifier means being arranged to isolate the first positive and negative connectors from each other, (h) third positive and negative connectors arranged for connection of the positive and negative terminals of a source of battery charging voltage rated for charging one of said batteries, and (i) electrical conductors connecting the third positive and negative connectors across the first switch means. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification