Battery system for a power tool, as well as battery holder therefor, charger, and charging system
First Claim
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1. A power tool charger that charges a battery pack of a power tool comprising:
- a charging unit that supplies direct current power to at least one battery cell of the battery pack for charging a rechargeable battery of a power tool;
a condition detection unit that measures the voltage of the battery pack to detect condition information of the battery pack; and
an information processing unit that receives the condition information of the battery pack from the condition detection unit and outputs the received condition information of the battery pack to a communication unit that is configured to perform wireless communication with another device in accordance with a near field communication standard,further comprising a charger body that accommodates the charging unit, the condition detection unit, and the information processing unit,the charger body includes;
a plurality of terminals of the charger body that are respectively connectable to a plurality of electrodes of the battery pack,wherein the condition information includes information specifying that the charging of the battery pack is completed to, andwhen determining that the state of charge of the battery pack is the predetermined value, the information processing unit has the charging unit terminate charging of the rechargeable battery and outputs the information specifying that the charging of the battery pack is completed to the communication unit.
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Abstract
A battery system for a power tool includes two or more battery packs (12), at least one battery holder (14) adapted to detachably engage two or more of the battery packs and a charger (16, 216, 316, 416) adapted to detachably engage the battery holder and to simultaneously electrically communicate with two or more of the battery packs while the at least one battery holder engages both the charger and the battery packs.
252 Citations
21 Claims
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1. A power tool charger that charges a battery pack of a power tool comprising:
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a charging unit that supplies direct current power to at least one battery cell of the battery pack for charging a rechargeable battery of a power tool; a condition detection unit that measures the voltage of the battery pack to detect condition information of the battery pack; and an information processing unit that receives the condition information of the battery pack from the condition detection unit and outputs the received condition information of the battery pack to a communication unit that is configured to perform wireless communication with another device in accordance with a near field communication standard, further comprising a charger body that accommodates the charging unit, the condition detection unit, and the information processing unit, the charger body includes; a plurality of terminals of the charger body that are respectively connectable to a plurality of electrodes of the battery pack, wherein the condition information includes information specifying that the charging of the battery pack is completed to, and when determining that the state of charge of the battery pack is the predetermined value, the information processing unit has the charging unit terminate charging of the rechargeable battery and outputs the information specifying that the charging of the battery pack is completed to the communication unit. - View Dependent Claims (2, 3, 12, 13)
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4. A power tool charging system comprising:
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a battery pack of a power tool; a power tool charger that charges a battery pack of a power tool, wherein the power tool charger includes; a charging unit that supplies direct current power to at least one battery cell of the battery pack for charging a rechargeable battery of a power tool, a condition detection unit that measures the voltage of the battery pack to detect condition information of the battery pack when the battery is being charged, and an information processing unit that receives the condition information of the battery pack from the condition detection unit; and a communication unit that is configured to perform wireless communication with another device in accordance with a near field communication standard when the battery is being charged, wherein the information processing unit outputs the received condition information of the battery pack to the communication unit, the power tool charger further including a charger body that accommodates the charging unit, the condition detection unit, and the information processing unit, the charger body includes; a plurality of terminals of the charger body that are respectively connectable to a plurality of electrodes of the battery pack, wherein the condition information includes information specifying that the charging of the battery pack is completed, and when determining that the state of charge of the battery pack is the predetermined value, the information processing unit has the charging unit terminate charging of the rechargeable battery and outputs the information specifying that the charging of the battery pack is completed to the communication unit. - View Dependent Claims (14, 15, 16)
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5. A charger configured to charge a battery pack for a power tool, the charger comprising:
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at least one battery interface configured to detachably attach to the battery pack; a charging circuit configured to charge the battery pack attached to the battery interface; and a charger controller configured to acquire information related to the battery pack attached to the battery interface, wherein the charger controller is connectable to a wireless communication circuit and is configured to transmit the acquired information to an external device via the wireless communication circuit, and the acquired information includes battery information of the battery pack, the battery information including a unique identification code of the battery pack, further comprising a charger housing on which the battery interface is disposed, wherein the charger housing is configured to accommodate the wireless communication circuit inside the charger housing. - View Dependent Claims (6, 7, 8, 17)
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9. A charging system configured to charge a battery pack for a power tool, the system comprising:
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a charger comprising; a charger housing; at least one battery interface on an exterior of the charger housing, the battery interface being configured to detachably engage the battery pack, a charging circuit inside the charger housing, the charging circuit being configured to charge the battery pack attached to the battery interface, and a charger controller inside the charger housing configured to acquire information related to the battery pack attached to the battery interface; a housing containing a wireless communication circuit; the wireless communication circuit being located outside the charger housing and being connected to the charger controller, wherein the charger controller is configured to transmit the acquired information to an external device via the wireless communication circuit, and wherein the charger housing is configured to detachably engage the housing containing the wireless communication circuit such that the housing containing the wireless communication circuit is fixed at a prescribed position relative to the charger housing. - View Dependent Claims (10, 11, 18, 19, 20)
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21. A power tool charger that charges a battery pack of a power tool comprising:
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a charging unit that supplies direct current power to at least one battery cell of the battery pack for charging a rechargeable battery of a power tool; a condition detection unit that measures the voltage of the battery pack to detect condition information of the battery pack; and an information processing unit that receives the condition information of the battery pack from the condition detection unit and outputs the received condition information of the battery pack to a communication unit that is configured to perform wireless communication with another device in accordance with a near field communication standard, further comprising a charger body that accommodates the charging unit, the condition detection unit, and the information processing unit, the charger body includes; a plurality of terminals of the charger body that are respectively connectable to a plurality of electrodes of the battery pack, wherein the condition information includes information specifying that the charging of the battery pack is completed to a predetermined value, and when charging of the battery pack is completed to the predetermined value, the information processing unit has the charging unit terminate charging of the rechargeable battery and outputs the information specifying that the charging of the battery pack is completed to the predetermined value to the communication unit.
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Specification