Power-supplying device
First Claim
Patent Images
1. A power-supplying device comprising:
- a terminal having a plus side and a minus side, configured to be connected to an external device;
a rechargeable battery configured to output electrical power to the external device via the terminal;
a first shutdown circuit positioned at a plus side of the rechargeable battery, the first shutdown circuit being configured to interrupt electricity over a first path between the rechargeable battery and the plus side of the terminal;
a second shutdown circuit positioned at a minus side of the rechargeable battery, the second shutdown circuit being configured to interrupt electricity over a second path between shutdown output of the rechargeable battery and the minus side of the terminal;
a controller configured to control the first shutdown circuit and the second shutdown circuit;
a step-down circuit configured to apply a prescribed voltage to the controller, the stepdown circuit configured to be connected to an external charging device through a third path; and
a first switching circuit, wherein the step-down circuit is further configured to be connected to the rechargeable battery via the first switching circuit, and the controller is configured to control the first switching circuit to turn on and off electrical connection between the rechargeable battery and the step-down circuit, wherein the step-down circuit receives power supply from one of the external charging device and the rechargeable battery when the first shutdown circuit interrupts electricity over the first path.
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Accused Products
Abstract
A power-supplying device includes a terminal, a rechargeable battery, a first shutdown circuit, and a second shutdown circuit. The terminal is configured to be connected to a power tool. The rechargeable battery is configured to output electrical power to the power tool via the terminal. The first shutdown circuit is positioned at a plus side of the rechargeable battery, the first shutdown circuit being configured to shutdown output of the rechargeable battery. The second shutdown circuit is positioned at a minus side of the rechargeable battery. The second shutdown circuit is configured to shutdown output of the rechargeable battery.
17 Citations
20 Claims
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1. A power-supplying device comprising:
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a terminal having a plus side and a minus side, configured to be connected to an external device; a rechargeable battery configured to output electrical power to the external device via the terminal; a first shutdown circuit positioned at a plus side of the rechargeable battery, the first shutdown circuit being configured to interrupt electricity over a first path between the rechargeable battery and the plus side of the terminal; a second shutdown circuit positioned at a minus side of the rechargeable battery, the second shutdown circuit being configured to interrupt electricity over a second path between shutdown output of the rechargeable battery and the minus side of the terminal; a controller configured to control the first shutdown circuit and the second shutdown circuit; a step-down circuit configured to apply a prescribed voltage to the controller, the stepdown circuit configured to be connected to an external charging device through a third path; and a first switching circuit, wherein the step-down circuit is further configured to be connected to the rechargeable battery via the first switching circuit, and the controller is configured to control the first switching circuit to turn on and off electrical connection between the rechargeable battery and the step-down circuit, wherein the step-down circuit receives power supply from one of the external charging device and the rechargeable battery when the first shutdown circuit interrupts electricity over the first path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system comprising:
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at least one of a power tool and a charging device; and a power-supplying device having; a terminal configured to be connected to the at least one of a power tool and a charging device; a rechargeable battery including a plurality of battery cells; a first path positioned at a plus side of the rechargeable battery and configured to be connected to the at least one of the power tool and the charging device via the terminal; a second path positioned at a minus side of the rechargeable battery and configured to be connected to the at least one of the power tool and the charging device via the terminal; a third path; a fourth path; a first shutdown circuit positioned at the plus side of the rechargeable battery, the first shutdown circuit being configured to interrupt electricity over the first path; a second shutdown circuit positioned at the minus side of the rechargeable battery, the second shutdown circuit being configured to interrupt electricity over the second path; a controller; a step-down circuit configured to apply a prescribed voltage to the controller, the step-down circuit configured to be connected to the charging device through the third path and the terminal, and configured to be connected to the rechargeable battery via the fourth path; and a third shutdown circuit configured to interrupt electricity over the fourth path, wherein the controller is configured to control the first shutdown circuit, the second shutdown circuit, and the third shutdown circuit, wherein when the terminal is connected to the charging device, the third path supplies the prescribed voltage to the controller via the step-down circuit, wherein when the controller detects overdischarge of at least one of the plurality of battery cells, at least one of the first shutdown circuit and the second shutdown circuit interrupts electricity over at least one of the first path and the second path corresponding to the at least one of the first shutdown circuit and the second shutdown circuit, and wherein the step-down circuit receives power supply from one of the external charging device and the rechargeable battery when the first shutdown circuit interrupts electricity over the first path.
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Specification