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US 9,287,725 B2Granted
Circuit and method enabling the sharing of a battery charger with multiple batteries
AssigneePulseTech Products Corporation
InventorsJames Earl Huffman, Johnny Lyman Wise
Life of this patent
Estimating the term…
Abstract
A circuit includes a first port configured for connection to a battery charger and a plurality of second ports each configured for connection to a battery to be charged. The circuit includes a corresponding switchable circuit path provided between the first port and each of the second ports. A control circuit is configured to selectively activate the switchable circuit paths so as to connect the first port to selected ones of the second ports for charging of the connected battery by the connected battery charger.
Claims26
A circuit, comprising:
- a first port having a first positive line and a first negative line configured for connection to terminals of a battery charger;
- a second port having a second positive line and a second negative line configured for connection to terminals of a battery to be charged;
- a third port having a third positive line and third negative line configured for connection to a further battery to be charged;
- a switchable circuit provided between the first port, the second port and the third port, said switchable circuit including a first positive switch selectively connecting the first positive line to the second positive line and a first negative switch selectively connecting the first negative line to the second negative line and a second positive switch selectively connecting the first positive line to the third positive line and a second negative switch selectively connecting the first negative line to the third negative line;
- a first power supply rectifier connected between the second positive line and second negative line to generate a first rectified voltage from said battery to be charged;
- a second power supply rectifier connected between the third positive line and the third negative line to generate a second rectified voltage from said further battery to be charged;
- a power supply circuit coupled to receive said first and second rectified voltages and operable to generate a first regulated supply voltage;
- and
- a control circuit powered from the first regulated supply voltage and operable to selectively activate the first and second positive switches and first and second negative switches in the switchable circuit so as to selectively connect the first port to the second and third ports for charging of the connected battery and further battery from the connected battery charger.
6 more elements
A circuit, comprising:
- a first port having a first positive line and a first negative line configured for connection to terminals of a battery charger;
- a second port having a second positive line and a second negative line configured for connection to terminals of a battery to be charged;
- a third port having a third positive line and a third negative line configured for connection to terminals of a further battery to be charged;
- a first relay switching circuit including first switches selectively connecting the first positive line to the second positive line and connecting the first negative line to the second negative line and a coil operating to control actuation of said first switches;
- a second relay switching circuit including second switches selectively connecting the first positive line to the third positive line and connecting the first negative line to the third negative line and a coil operating to control actuation of said second switches;
- a first rectification circuit coupled between the second positive line and the second negative line and operating to generate a first rectified voltage;
- a second rectification circuit coupled between the third positive line and the third negative line and operating to generate a second rectified voltage;
- a first regulator circuit powered from the first and second rectified voltages and configured to generate a first regulated power supply voltage applied to a first terminal of the coils of the first and second relay switching circuits;
- a second regulator circuit powered from the first regulated power supply voltage to generate a second power supply voltage;
- a control circuit powered by the second power supply voltage and connected to a second terminal of the coils of the first and second relay switching circuits so as to control actuation thereof to connect the first port to the second port for charging of the connected battery by the connected battery charger and connect the first port to the third port for charging of the connected further battery by the connected battery charger.
7 more elements
Dependencies are inferred from the claim text.