TEMPERATURE DETECTION DEVICE AND BATTERY PACK
First Claim
1. A temperature detection device provided in a battery pack for electric power tool and configured to detect a temperature inside of the battery pack, the temperature detection device comprising:
- a signal output circuit configured to output an output signal for use other than for indicating an ambient temperature thereof, the output signal being a signal that changes a state of the output signal depending on the ambient temperature; and
an output signal-based temperature detection unit configured to detect the temperature inside of the battery pack based on the state of the output signal from the signal output circuit.
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Abstract
A temperature detection device of the present invention is provided in a battery pack for electric power tool and detects a temperature inside the battery pack. The temperature detection device includes a signal output circuit and an output signal-based temperature detection unit. The signal output circuit is configured to output an output signal for use other than for indicating an ambient temperature thereof. A state of the output signal changes depending on the ambient temperature. The output signal-based temperature detection unit is configured to detect the temperature inside of the battery pack based on the state of the output signal from the signal output circuit.
29 Citations
13 Claims
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1. A temperature detection device provided in a battery pack for electric power tool and configured to detect a temperature inside of the battery pack, the temperature detection device comprising:
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a signal output circuit configured to output an output signal for use other than for indicating an ambient temperature thereof, the output signal being a signal that changes a state of the output signal depending on the ambient temperature; and an output signal-based temperature detection unit configured to detect the temperature inside of the battery pack based on the state of the output signal from the signal output circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A battery pack for electric power tool comprising:
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a battery having at least one battery cell; and a temperature detection device provided in the battery pack and configured to detect a temperature inside of the battery pack, wherein the temperature detection device includes; a signal output circuit configured to output an output signal for use other than for indicating an ambient temperature thereof, the output signal being a signal that changes a state of the output signal depending on the ambient temperature; and an output signal-based temperature detection unit configured to detect the temperature inside of the battery pack based on the state of the output signal from the signal output circuit.
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Specification