Control device and electric power tool system

An electric power tool system comprising:

• an electric power tool;
• and
• a control device coupling the electric power tool to a battery pack to provide electric power to the electric power tool,
• wherein the control device comprises:
• a first shell,
• a first control unit provided in the first shell, the first shell configured to be connected to a battery pack mounting part of the battery pack,
• a user operation unit to control the electric power tool, and
• a first interface electrically connected to the user operation unit;
• wherein the electric power tool comprises:
• a second shell,
• a working component,
• a second control unit disposed in the second shell and configured to control the working component, and
• a second interface electrically connected to the second control unit;
• wherein the battery pack mounting part comprises a pair of guide rails, and the battery pack is able to slide along the pair of guide rails to be engaged or disengaged with the control device;
• wherein the first interface is connected to the second interface via a cable, thus electrically connecting the electric power tool to the control device;
• and
• wherein the second control unit is electrically connected to the user operation unit via the cable, is configured to obtain an operation on the user operation unit and controls the working component according to the user operation unit.

A control device configured to selectively couple one of at least two types of electric power tools, each of the at least two types of electric power tools comprising a second control unit, the control device comprising:

• a shell;
• a battery pack mounting part on the shell, the battery pack mounting part comprising a pair of guide rails configured to be detachably connected to a battery pack such that the battery pack is slidable along the pair of guide rails, whereby the battery pack is engageable with the control device;
• a control unit disposed in the shell and configured to detect at least one of parameters of a voltage, a current, and a temperature of the battery pack to determine a working state of the battery pack, and to cut off power transmission from the battery pack to an electric power tool when the battery pack is abnormal;
• and
• an interface electrically connected to the electric power tool via a cable, the control device transmitting electric energy to the electric power tool via the interface,
• wherein a respective electric power tool of the at least two types of electric power tools is configured to measure a value of a current flowing into a working component and to stop an output of the working component when a current value is greater than a predetermined current value.

A control device configured to couple an electric power tool to a battery pack, the electric power tool comprising a working component and a first interface, wherein the control device comprises:

• a shell;
• a battery pack mounting part on the shell, the battery pack mounting part comprising a pair of guide rails configured to be detachably connected to the battery pack such that the battery pack is slidable along the pair of guide rails, whereby the battery pack is engageable with the control device;
• a first control unit disposed in the shell and configured to detect at least one of parameters of a voltage, a current, and a temperature of the battery pack to determine a working state of the battery pack, and to cut off power transmission from the battery pack to the electric power tool when the battery pack is abnormal;
• a user operation unit;
• and
• a second interface electrically connected to the user operation unit, the second interface being connected to the first interface of the electric power tool, via a cable, such that the electric power tool is electrically connected to the control device to control the working component according to an operation on the user operation unit,
• wherein the electric power tool further comprises a second control unit electrically connected to the user operation unit via the cable to obtain an operation on the user operation unit.