Power tool and discharging system
AssigneeJiangsu Dongcheng Tools Technology Co., Ltd.
InventorMinming Liu
Life of this patent
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Abstract
Disclosed in the present application are a power tool and a discharging system. A battery pack includes a first positive terminal, a first negative terminal, a first controller, and a first state detection terminal. The power tool includes a second positive terminal, a second negative terminal, a second controller, a power supply module for supplying power to the second controller, and a power-on module connected to the power supply module. When the battery pack is connected to the power tool by insertion, the power-on module is connected to the first state detection terminal; and the first state detection terminal controls on/off of the power-on module according to the state of the battery pack, so as to control whether to power on the power tool.
Claims20
A discharging system comprising a battery pack and a power tool, wherein,
- the battery pack comprises a first positive terminal, a first negative terminal, a first controller and a first state detection terminal connected to the first controller;
- and
- the power tool comprises a second positive terminal and a second negative terminal;
- the second positive terminal and the second negative terminal are electrically in contact with the first positive terminal and the first negative terminal of the battery pack, respectively, wherein:
- the power tool comprises a second controller, a power supply module for supplying power to the second controller and a power-on module connected to the power supply module, the power-on module is connected to the first state detection terminal when the battery pack is assembled to the power tool, and the first state detection terminal controls on/off of the power-on module based on a state of the battery pack to control whether the power tool is powered on;
- wherein the power-on module comprises a second state detection terminal connected to the first state detection terminal, the second state detection terminal is connected to a first switch, the first switch is connected to a second switch, and the second switch is connected to the second positive terminal and the power supply module, the power supply module comprises a switch circuit, the switch circuit comprises a third switch and a fourth switch, and the third switch is connected to the second switch and the fourth switch;
- wherein when the battery pack is in an abnormal state, the first controller outputs a signal to the second state detection terminal through the first state detection terminal, to control the first switch and the second switch to be turned off and the third switch and the fourth switch to be turned off so that the power tool is not powered on.
A power tool detachably connected to a battery pack, the power tool comprising a second positive terminal electrically connected to a first positive terminal of the battery pack, and a second negative terminal electrically connected to a first negative terminal of the battery pack;
- wherein the power tool comprises:
- a second controller;
- a power supply module configured to supply power to the second controller;
- a power-on module connected to the power supply module, and configured to control on/off of the power-on module according to a state of the battery pack to control whether the power tool is powered on;
- wherein the power-on module comprises a second state detection terminal connected to the first state detection terminal, the second state detection terminal is connected to a first switch, the first switch is connected to a second switch, and the second switch is connected to the second positive terminal and the power supply module, the power supply module comprises a switch circuit, the switch circuit comprises a third switch and a fourth switch, and the third switch is connected to the second switch and the fourth switch;
- and wherein when the battery pack is in an abnormal state, the second state detection terminal receives a signal outputted by a first controller of the battery pack through the first state detection terminal, to control the first switch and the second switch to be turned off and the third switch and the fourth switch to be turned off, so that the power tool is not powered on.
Dependencies are inferred from the claim text.