WO2021047651A1 - 电动工具供电系统 - Google Patents

电动工具供电系统 Download PDF

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Publication number
WO2021047651A1
WO2021047651A1 PCT/CN2020/114837 CN2020114837W WO2021047651A1 WO 2021047651 A1 WO2021047651 A1 WO 2021047651A1 CN 2020114837 W CN2020114837 W CN 2020114837W WO 2021047651 A1 WO2021047651 A1 WO 2021047651A1
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WIPO (PCT)
Prior art keywords
voltage
power supply
switch
electric tool
electrically connected
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PCT/CN2020/114837
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English (en)
French (fr)
Inventor
张煜
孙云红
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苏州宝时得电动工具有限公司
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Publication of WO2021047651A1 publication Critical patent/WO2021047651A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Definitions

  • the invention relates to the field of electric tools, in particular to a power supply system for electric tools.
  • the power supply module composed of batteries is provided inside.
  • the output port can be installed with a suitable connection line, such as a cable, so that it can be connected to the tool through the cable to supply power to the tool.
  • the power supply device can output a variety of working voltages, and is applied to a variety of electric tools with different rated working voltages, and has strong versatility.
  • power tools with different rated voltages are usually connected to the power supply device with different connecting wires, which is costly and cumbersome to operate.
  • a power supply system for an electric tool includes: a power supply device including a power supply, a power supply interface electrically connected to the power supply, and a voltage conversion switch; the voltage conversion switch is electrically connected between the power supply interface and the power supply, To control the output voltage of the power supply interface; the cable includes a first end and a second end electrically connected to the first end; the first end is electrically connected to the power supply interface; the second end An adapter is provided to adapt to different electric tools; the electric tool is electrically connected with the adapter.
  • the second end of the cable is provided with adapters for adapting to different electric tools, so that the cable can be applied to different electric tools.
  • the power supply device is also provided with a voltage conversion switch to control the output voltage of the power supply device. This setting can avoid accidents caused by the mismatch between the input voltage of the electric tool and the rated voltage of the electric tool when the same power supply device and cable are adapted to different electric tools.
  • the power supply system of the electric tool allows different electric tools to be used universally with only one cable, which saves the purchase cost of the cable and is more convenient to use, thereby improving the user experience effect.
  • the electric tool includes an input connector, a controller electrically connected to the input connector, and a motor electrically connected to the controller and controlled by the controller; the input connector and The adapter is electrically connected.
  • the electric tool further includes a voltage detector electrically connected between the input connector and the controller to detect the input voltage of the input connector.
  • the voltage detector controls the on and off of the circuit between the input connector and the controller according to the detected input voltage; the voltage detector is provided with a voltage threshold; when the input of the input connector When the voltage meets the voltage threshold, the voltage detector controls the circuit between the input connector and the controller to conduct.
  • a voltage detector is also provided between the input connector of the power tool and the controller to detect the output voltage of the power supply device to the power tool.
  • the setting of the voltage detector can further avoid the possibility that the input voltage does not match the rated voltage during the use of the electric tool, thereby enhancing the safety of the electric tool and improving the user experience effect.
  • the electric tool further includes an alarm device; when the input voltage of the input connector exceeds the voltage threshold, the voltage detector controls the circuit between the input connector and the controller to disconnect , And control the alarm device to work.
  • the voltage detector transmits the detection structure of the input voltage to the controller, and the controller controls the motor according to the detection result;
  • the electric tool further includes a first voltage conversion module ,
  • the first voltage conversion module is electrically connected between the controller and the input connector, so as to supply power to the controller through the first voltage conversion module.
  • the voltage detector is electrically connected to the controller.
  • the voltage detector detects the input voltage of the power supply device in real time, and the controller controls the operation of the motor according to the input voltage.
  • the setting of the voltage detector can avoid the possibility that the input voltage does not match the rated voltage during the use of the electric tool, thereby improving the safety of the electric tool and improving the user experience effect.
  • a first switch is electrically connected in series between the first voltage conversion module and the input connector; a switch control circuit is electrically connected to the first switch; when the switch control circuit is turned on , The first switch is closed.
  • the switch control circuit is electrically connected to the input connector, and a main switch is also provided between the switch control circuit and the input connector, so that the switch control can be controlled by the main switch. Whether the circuit is on or off.
  • the power supply system of the above electric tool controls the conduction of the switch control circuit through the main switch, thereby controlling the power supply of the controller through the main switch, which is more convenient to use and improves the user experience.
  • a second switch is electrically connected between the controller and the motor to control the on-off of the circuit where the motor is located; the second switch is controlled by the controller.
  • the electric tool further includes a second voltage conversion module; the second voltage conversion module is electrically connected between the input connector and the second switch, so as to pass the second voltage conversion The module and the second switch supply power to the motor; the second voltage conversion module is controlled by the controller.
  • the second voltage conversion module can convert the voltage to be equal to the rated voltage.
  • the power supply system of the electric tool can further ensure that the voltage of the electric tool is equal to the rated voltage, thereby improving the convenience and safety of the electric tool in use, and improving the user experience effect.
  • Fig. 1 is a schematic structural diagram of a power supply system for an electric tool in the first embodiment of the application.
  • FIG. 2 is a schematic diagram of the circuit structure of the electric tool in the first embodiment of the application.
  • FIG. 3 is a schematic diagram of another circuit structure of the electric tool in the first embodiment of the application.
  • FIG. 4 is a schematic diagram of the circuit structure of the electric tool in the second embodiment of the application.
  • FIG. 5 is a schematic diagram of the circuit structure of the electric tool in the third embodiment of the application.
  • the present application provides an electric tool power supply system 10 to adapt to different electric tools 300 through a cable 200.
  • the electric tool power supply system 10 includes: a power supply device 100, an electric tool 300, and a cable 200 electrically connected between the power supply device 100 and the electric tool 300.
  • the power supply device 100 includes a housing 101, a power supply module 102, a power supply interface 104 electrically connected to the power supply module 102, a voltage switching circuit 105, and a voltage conversion switch 106.
  • the power supply module 102 is located in the housing and includes a plurality of electrically connected batteries, which are connected in series and/or in parallel, and the output power of the power supply module 102 is connected to the power supply interface 104;
  • the power supply interface 104 is arranged on the housing, so
  • the cable 200 is installed on the power supply interface 104 to obtain power from the power supply module 102 and supply power to the electric tool 300;
  • the voltage switching circuit 105 is located between the power supply module 102 and the power supply interface 104, and is connected to the housing on the housing and is operated by the user.
  • the user operates the voltage conversion switch 106 to control the voltage switching circuit 105 to adjust the output voltage of the power supply interface 104.
  • the voltage conversion switch 106 is a multi-position knob switch with three positions of 20, 40, and 60V.
  • the voltage switching circuit 105 is a series-parallel switching circuit, which can change the series-parallel relationship of the power supply module 102 so that the output power of the power supply module 102 is reduced. The voltage can be switched among 20V, 40V, and 60V.
  • the voltage switching circuit 105 When the user rotates the voltage conversion switch 106 to select 20V, the voltage switching circuit 105 is triggered to change the series-parallel relationship, and the power module 102 outputs 20V power, so that the power supply interface 104 obtains a 20V voltage and transmits it to the external cable 200.
  • the power supply interface 104 is made of conductive metal and is electrically connected to the power module 102 for outputting electrical energy of the power module 102.
  • the voltage switching circuit 105 may also be a DC/DC module with adjustable output, the output voltage may be adjusted according to the voltage conversion switch 106, or other implementation manners.
  • the cable 200 includes a first end 202 and a second end 204 electrically connected to the first end 202.
  • the first end 202 of the cable 200 is electrically connected to the power supply interface 104 of the power source 102, and the second end 204 is electrically connected to the power input port of the power tool 300, so that the power supply device 100, the cable 200 and the power tool 300 are A current loop is formed inside.
  • the power input port of the electric tool to obtain the input voltage is a cable interface
  • the second end 204 of the corresponding cable 200 is a common cable port, which can be universally installed on the cable interfaces of multiple electric tools with different rated working voltages. Its power supply.
  • the second end 204 of the corresponding cable 200 can be provided with an adapter, which can be compatible with power tools 300 with different rated working voltages. It is adapted so that the cable 200 can be electrically connected to different electric tools 300.
  • the power tool 300 is electrically connected to the second end 204 of the cable 200 to receive power from the power supply device 100.
  • the power tool 300 works when driven by electric energy.
  • the cable 200 is electrically connected between the power supply device 100 and the power tool 300.
  • the output voltage of the power supply device 100 is adjusted through the voltage conversion switch 106 operated by the user, so that the input voltage of the power tool 300 is matched with the rated voltage of the power tool 300, and then the power supply device 100 is controlled to output electrical energy to the power tool 300.
  • the power tool 300 can be made to work.
  • a same cable 200 is applied to a variety of electric tools 300 with different rated working voltages.
  • the power supply device 100 is also provided with a voltage conversion switch 106 operated by the user to control the output voltage of the power supply device 100, avoiding that the same power supply device 100 and cable 200 are adapted to multiple power tools 300 with different rated working voltages.
  • the input voltage of the tool 300 does not match the rated voltage of the electric tool 300 and an accident occurs.
  • the power supply system 10 of the electric tool can be used for different electric tools 300 with only one cable 200, saves the purchase cost of the cable 200, and is more convenient to use, thereby improving the user experience effect.
  • the electric tool 300 includes an input interface 302 (the above-mentioned power input port), and a voltage matching detection circuit electrically connected to the input interface 302 400 and a tool working circuit 500 connected to the voltage matching detection circuit 400 to obtain power.
  • the voltage matching detection circuit 400 obtains power from the input interface 302 and has a power output, which is transmitted to the tool working circuit 500 through the power supply line.
  • the tool working circuit 500 includes the main switch 312, the controller 304, the motor 306 and other necessary circuits for the tool operated by the user.
  • the controller 304 When the tool working circuit 500 receives power from the power line and the user presses the main switch to start the tool, the controller 304 is powered to work And control the operation of the motor 306.
  • the input interface 302 is a conductive metal, and is used to electrically connect and physically join the second end 204 of the cable 200. .
  • the power supply wire of the motor 306 is connected to the power supply line through a discharge switch.
  • a control signal is issued to control the on and off of the discharge switch.
  • the discharge switch is disconnected, the motor is disconnected from the power line, and the motor stops. That is, the motor 306 works or stops working according to the control signal sent by the controller 304.
  • the voltage matching detection circuit 400 is used to detect the input voltage of the input interface 302 and control the on/off of the circuit between the input interface 302 and the tool working circuit 500.
  • the line between the tool working circuit 500 and the input interface 302 is unique, and the line is provided with a voltage matching detection circuit 400, so that the voltage matching detection circuit 400 can control the tool working circuit 500 and the input interface 302.
  • the lines between the interfaces 302 are on and off.
  • the voltage matching detection circuit 400 may be provided with a voltage threshold.
  • the voltage matching detection circuit 400 controls the circuit between the input interface 302 and the tool working circuit 500 to conduct, that is, the voltage matching detection circuit 400 normally outputs power to the power supply line Otherwise, when the input voltage of the input interface 302 exceeds the voltage threshold, the voltage matching detection circuit 400 controls the circuit between the input interface 302 and the tool working circuit 500 to disconnect, that is, the voltage matching detection circuit 400 stops outputting power to the power supply line, The tool working circuit 500 does not work when it is powered off.
  • the voltage threshold of the voltage matching detection circuit 400 can be set as the rated voltage threshold of the electric tool 300. At this time, when the input voltage of the electric tool 300 is within the rated voltage threshold of the electric tool 300, the electric tool 300 can be energized to work. Otherwise, the power tool 300 cannot be energized to work.
  • the setting of the voltage matching detection circuit 400 can further avoid the possibility that the input voltage does not match the rated voltage during the use of the electric tool 300, and prevent the output of the power supply interface 104 from being mismatched by the user's choice due to the failure of the power supply device 100 and damaging the electric tool. , Thereby enhancing the safety of the electric tool 300 and enhancing the user experience effect.
  • the electric tool 300 may further include an alarm device 311.
  • the alarm device 311 is connected to and controlled by the voltage matching detection circuit 400. At this time, when the voltage matching detection circuit 400 detects that the input voltage of the input interface 302 exceeds the voltage threshold, it can control the alarm device 311 to work and issue an alarm.
  • the alarm device 311 can be an electro-sounding or electro-luminescent device such as a buzzer or an indicator light to provide an alarm.
  • FIG. 4 a circuit diagram of the electric tool 300 in the second embodiment of this application.
  • the difference from the above-mentioned first embodiment is that the second embodiment does not have the above-mentioned voltage matching detection circuit 400.
  • the alarm device 311 is connected to the controller 304 and is controlled by the controller 304.
  • the power supply line of the input interface 302 is directly connected to the working circuit 500 to supply power to it.
  • the working circuit 500 includes the controller 304, the first switch 316 (the above-mentioned discharge Switch), the motor 306 is connected in the same way as above.
  • the electric tool of the second embodiment includes a voltage detector 310, which is electrically connected between the input interface 302 and the controller 304, for detecting the input voltage of the input interface 302, and transmitting the detection result of the input voltage to Controller 304.
  • the controller 304 After the controller 304 obtains the detection result of the input voltage, it controls the motor 306 to work according to the detection result of the input voltage.
  • the electric tool 300 also includes a first voltage conversion module 308 which is electrically connected between the controller 304 and the input interface 302.
  • the first voltage conversion module 30 converts any voltage output from the input interface 302 to obtain an output voltage, converts the input voltage of the input interface 302, and provides three output voltages to the controller 304.
  • the control The device 304 is powered on to work.
  • the operating voltage of the controller 304 is 5V, that is, the controller 304 can only work under the driving of the 5V voltage.
  • the first voltage conversion module 308 is used to convert the input voltage of the input interface 302 to 5V and feed it to the controller 304 so that the controller 304 can enter the working state.
  • the controller 304 controls the operation of the motor 306 according to the detection result of the voltage detector 310 on the input voltage. After the voltage detector 310 detects the input voltage of the input interface 302, the detection result is transmitted to the controller 304.
  • the controller 304 may be provided with a voltage threshold, and the voltage threshold may correspond to the rated voltage at which the motor 306 operates.
  • the controller 304 obtains the detection result of the input voltage of the input interface 302, the detection result is compared with the voltage threshold.
  • the circuit where the motor 306 is located can be controlled to be turned on, that is, the first switch 316 is turned on, so that the motor 306 is energized to work. Conversely, when the magnitude of the input voltage exceeds the voltage threshold, the circuit where the motor 306 is located can be controlled to be turned off, that is, the first switch 316 is turned off.
  • the voltage detector 310 is electrically connected to the controller 304.
  • the voltage detector 310 detects the input voltage of the power supply device 100 in real time, and the controller 304 controls the motor 306 to work according to the input voltage.
  • the setting of the voltage detector 310 can avoid the possibility that the input voltage does not match the rated voltage during the use of the electric tool 300, and prevent the output of the power supply interface 104 from being mismatched by the user's choice due to the failure of the power supply device 100 and damaging the electric tool, thereby The safety of the electric tool 300 is improved, and the user experience effect is improved.
  • a second switch 318 for controlling whether the circuit where the first voltage conversion module 308 is located is electrically connected in series is also electrically connected in series between the first voltage conversion module 308 and the input interface 302.
  • the first voltage conversion module 308 can perform voltage conversion to supply power to the controller 304.
  • the second switch 318 is turned off, the first voltage conversion module 308 cannot work.
  • a switch control circuit 314 may be provided between the circuits of the electric tool 300.
  • the switch control circuit 314 is electrically connected to the second switch 318, so that when the switch control circuit 314 is turned on, the second switch 318 is closed. When the switch control circuit 314 is not turned on, the second switch 318 is turned off.
  • the switch control circuit 314 is connected to the controller 304, and the controller 304 can output a control signal to control the on/off of the switch control circuit.
  • the main switch 312 is electrically connected between the switch control circuit 314 and the input interface 302.
  • the switch control circuit 314 detects the level change from the input interface.
  • the switch control circuit 314 is turned on instantaneously, and the second switch 318 is controlled to turn on instantaneously.
  • the first voltage conversion module works, the controller is powered on, and controls
  • the device 304 outputs a control signal lock to the switch control circuit 314 to lock the conduction of the switch control circuit 304 and the second switch 318.
  • the controller 304 can be energized to work. At this time, the controller 304 can control whether the motor 306 works according to the input voltage of the input interface 302.
  • the first switch 316 is also electrically connected between the controller 304 and the motor 306.
  • the first switch 316 is used to control whether the circuit where the motor 306 is located is turned on or not, and the first switch 316 is controlled by the controller 304.
  • the controller 304 controls the first switch 316 to close, the circuit where the motor 306 is located is turned on.
  • the controller 304 controls the first switch 316 to be turned off the circuit where the motor 306 is located is turned off.
  • this is a schematic diagram of the electric tool 300 in the third embodiment of this application.
  • the electric tool 300 may further include a second voltage conversion module 320 and a third switch 322.
  • the second voltage conversion module 320 is electrically connected between the input interface 302 and the third switch 322, so that when the third switch 322 is closed, the second voltage conversion module 320 can supply power to the motor 306.
  • the second voltage conversion module 320 is also electrically connected to the controller 304 to be controlled by the controller 304.
  • the second voltage conversion module 320 is used to convert the input voltage of the input interface 302 to a rated voltage for the operation of the motor 306.
  • the voltage detector 310 detects the magnitude of the voltage, and transmits the detection result to the controller 304.
  • the input interface 302 has two power supply lines to supply power to the motor.
  • the input interface 302 on the first power supply line is directly connected to the motor for power supply through the first switch 316, and the input interface 302 on the second power supply line is through the second voltage conversion module 320. It is connected to the third switch 322 and then connected to the motor for power supply.
  • the controller 304 judges the detection result. If the detection result is within the voltage threshold preset by the controller 304, the controller 304 controls the first switch 316 to close and cut off the third switch 322, and the motor 306 can work.
  • the controller 304 controls the second voltage conversion module 320 to work.
  • the second voltage conversion module 320 converts the input voltage to the rated working voltage of the electric tool 300.
  • the third switch 322 is controlled to be turned on, and the first switch 316 is controlled to be turned off, so that the second voltage conversion module 320 supplies power to the motor 306 through the third switch 322, and the motor 306 can work.
  • the second voltage conversion module 320 can convert the voltage to be equal to the rated voltage.
  • the power supply system 10 of the power tool can further ensure that the voltage of the power tool 300 is equal to the rated voltage, thereby improving the convenience and safety of the power tool 300 in use, and improving the user experience.
  • the following describes the power supply system 10 of the electric tool of the present application from two specific embodiments (the above-mentioned first and third embodiments).
  • the second embodiment is basically the same as the third embodiment and will not be repeated.
  • the power supply system 10 of the electric tool of the present application includes a power supply device 100, a cable 200 and an electric tool 300.
  • the power supply device 100 includes a power supply module 102, which is composed of four identical 20V DC batteries.
  • the power supply interface 104 is electrically connected to the power supply module 102 to output electric energy.
  • the voltage switching circuit 105 is provided between the power supply interface 104 and the power supply 102. The user operates the voltage switching switch 106 to control the voltage switching circuit 105, thereby changing the output voltage of the power supply device 100 by changing the connection mode of the four DC batteries. For example, when the power supply device 100 needs to output a voltage of 20V, multiple 20V DC batteries can be connected in parallel through the voltage switching circuit 105; when the power supply device 100 needs to output a voltage of 80V, four 20V DC batteries can be connected in series through the voltage switch circuit 105.
  • the first end 202 of the cable 200 is electrically connected to the output interface of the power supply device 100.
  • the second end 204 of the cable 200 is used to electrically connect with the electric tool 300, so that the power supply device 100 and the electric tool 300 are connected.
  • the second end 204 of the cable 200 may be provided with an adapter.
  • the adapter is adapted to the input interface 302 of different electric tools 300.
  • the electric tool includes at least a first tool and a second tool with different rated working voltages.
  • the cable can be connected to the first tool and the second tool, and output the corresponding rated working voltage.
  • the electric tool 300 includes an input interface 302, a voltage matching detection circuit 400 and a tool working circuit 500 connected in series; and an alarm device 311 connected to the voltage matching detection circuit 400.
  • the voltage matching detection circuit 400 is provided with a voltage threshold, and the voltage threshold is equal to the rated working voltage range of the electric tool 300.
  • the output voltage of the power supply device 100 is adjusted through the voltage conversion switch 106, and the power supply device 100 and the power tool 300 are connected through the cable 200.
  • the voltage matching detection circuit 400 is used to detect the input voltage of the input interface 302. When the input voltage value of the input interface 302 meets the voltage threshold, the voltage matching detection circuit 400 controls the circuit between the input interface 302 and the tool working circuit 500 to conduct. The motor 306 is energized to work.
  • the voltage matching detection circuit 400310 controls the tool to work
  • the circuit between the circuit 500 and the input interface 302 is disconnected, and the circuit where the alarm device 311 is controlled is turned on. At this time, the alarm device 311 operates.
  • the power supply system 10 for an electric tool of the present application includes a power supply device 100, a cable module 200 and an electric tool 300.
  • the power supply device 100 includes a power module 102, which is composed of four identical 20V DC batteries.
  • the power supply interface 104 is electrically connected to the power supply module 102 to output electric energy.
  • the voltage switching circuit 105 is provided between the power supply interface 104 and the power supply 102.
  • the user operates the voltage switching switch 106 to control the voltage switching circuit 105, and changes the output voltage of the power supply device 100 by changing the connection mode of the four DC batteries. For example, when the power supply device 100 needs to output a voltage of 20V, multiple 20V DC batteries can be connected in parallel through the voltage switching circuit 105; when the power supply device 100 needs to output a voltage of 80V, four 20V DC batteries can be connected in series through the voltage switch circuit 105.
  • the first end 202 of the cable 200 is electrically connected to the output connector of the power supply device 100.
  • the second end 204 of the cable 200 is used to electrically connect with the electric tool 300, so that the power supply device 100 and the electric tool 300 are connected.
  • the second end 204 of the cable 200 may be provided with an adapter.
  • the adapter is adapted to the input interface 302 of different electric tools 300.
  • the electric tool includes at least a first tool and a second tool with different rated working voltages.
  • the cable can be connected to the first tool and the second tool, and output the corresponding rated working voltage.
  • the electric tool 300 includes an input interface 302, a voltage detector 310, a controller 304, a first switch 316, and a motor 306; it also includes a first voltage conversion module 308, a second switch 318, a switch control circuit 314, and a main switch 312; The second voltage conversion module 320 and the third switch 322. Wherein, a voltage threshold is set in the controller 304, and the voltage threshold is equal to the rated working voltage range of the electric tool 300.
  • the connection mode of each device in the electric tool 300 is: the input interface 302, the voltage detector 310, and the controller 304 form a loop, and the loop is used to detect the magnitude of the input voltage and transmit the detection result to the controller 304.
  • the input interface 302, the second switch 318, the first voltage conversion module 308, and the controller 304 form a second loop, which is used to provide the controller 304 with working power.
  • the input interface 302, the main switch 312, the switch control circuit 314, and the controller 304 form a third loop, which is used to control the second loop, so that the power tool 300 is completely powered off when the main switch 312 is turned off.
  • the first switch 316 of the input interface 302 and the motor 306 form a fourth loop. The first switch 316 is controlled by the controller 304.
  • This loop is used to energize the motor 306 when the input voltage meets the aforementioned voltage threshold.
  • the input interface 302, the second voltage conversion module 320, the third switch 322 and the motor 306 form a fifth loop, and the second voltage conversion module 320 and the third switch 322 are controlled by the controller 304.
  • the voltage is converted by the second voltage conversion module 320, and the motor 306 is energized to work.
  • the output voltage of the power supply device 100 is adjusted through the voltage conversion switch 106, and the power supply device 100 and the power tool 300 are connected through the cable 200.
  • the input interface 302 of the electric tool 300 has voltage. Press the main switch 312 to energize the switch control circuit 314 and control the second switch 318 to close.
  • the first voltage conversion module 308 converts the voltage into a working voltage of the controller 304, such as 5V, and supplies power to the controller 304 to make the controller 304 work.
  • the voltage detector 310 is used to detect the input voltage of the input interface 302 and transmit the detection result to the controller 304.
  • the controller 304 compares the detection result of the input voltage with the voltage threshold preset in the controller 304.
  • the voltage detector 310 controls the first switch 316 to close. At this time, the fourth loop formed by the input interface 302, the first switch 316, and the motor 306 is closed, and the motor 306 is energized to work.
  • the controller 304 controls the second voltage conversion module 320 to work and controls the third switch 322 to close.
  • the fifth loop formed by the input interface 302, the second voltage conversion module 320, the third switch 322 and the motor 306 is closed, and the motor 306 is energized to work.

Abstract

一种电动工具供电系统，包括：供电装置（100），包括电源模块（102）、与所述电源模块（102）电性连接的供电接口（104）及电压转换开关（106）；所述电压转换开关（106）电性连接于所述供电接口（104）与所述电源模块（102）之间，以控制所述供电接口（104）的输出电压；电缆（200），包括第一端（202）和与所述第一端（202）电性连接的第二端（204）；所述第一端（202）与所述供电接口（104）电性连接；所述第二端（204）设有转接头，以适配不同的电动工具；电动工具（300），与所述转接头电性连接。该电动工具供电系统，只需一根电缆即可通用不同的电动工具，节省电缆购买成本，使用更加方便，从而提升了用户的体验效果。

Description

电动工具供电系统
本申请要求了申请日为2019年09月12日，申请号为201910864163.7的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及电动工具领域，特别是涉及电动工具供电系统。
背景技术
现有的手持式电动工具，例如链据、修枝机等，均采用可拆卸的电池包给电动工具供电。不同种类的电动工具有相同或不同的额定工作电压，对应配置有相同或不同额定电压的电池包，额定电压不同的电池包在工具之间是不能混用的。
随技术发展，出现一种大容量的、用户可背负的电源装置，内部设置有电池组成的电源模块供电，有多个电力输出口输出不同的工作电压，例如20V、40V、60V，每个电力输出口可安装适配的连接线，如电缆，从而通过电缆连接到工具上对工具供电。相比于传统的电池包，该电源装置可输出多种工作电压，应用于多种不同额定工作电压的电动工具，通用性强。但是，为避免电力适配错误，不同额定电压的电动工具通常采用不同的连接线与电源装置进行连接，成本高且操作麻烦。
发明内容
基于此，有必要针对传统技术中存在的不同电动工具需要购买多种连接线的问题，提供一种电动工具供电系统。
一种电动工具供电系统，包括：供电装置，包括电源、与所述电源电性连接的供电接口及电压转换开关；所述电压转换开关电性连接于所述供电接口与所述电源之间，以控制所述供电接口的输出电压；电缆，包括第一端和与所述第一端电性连接的第二端；所述第一端与所述供电接口电性连接；所述第二端设有转接头，以适配不同的电动工具；电动工具，与所述转接头电性连接。
上述电动工具供电系统，电缆的第二端设有用于适配不同电动工具的转接头，可以使该电缆应用于不同的电动工具。同时，供电装置上还设有电压转换开关，从而控制供电装置的输出电压。该设置可以避免同一供电装置和电缆适配不同电动工具时，因电动工具的输入电压与电动工具的额定电压不匹配而产生事故。该电动工具供电系统，只需一根电缆即可通用不同的电动工具，节省电缆购买成本，使用更加方便，从而提升了用户的体验效果。
在一个实施例中，所述电动工具包括输入接头、与所述输入接头电性连接的控制器及与所述控制器电性连接、且受所述控制器控制的电机；所述输入接头与所述转接头电性连接。
在一个实施例中，所述电动工具还包括电压检测器，所述电压检测器电性连接于所述输入接头与所述控制器之间，以对所述输入接头的输入电压进行检测。
在一个实施例中，所述电压检测器根据检测的输入电压控制所述输入接头与所述控制器之间的电路通断；所述电压检测器设有电压阈值；当所述输入接头的输入电压满足所述电压阈值，所述电压检测器控制所述输入接头与所述控制器之间的电路导通。
上述电动工具供电系统，在电动工具的输入接头和控制器之间还设有电压检测器，以检测供电装置对电动工具的输出电压。该电压检测器的设置可以进 一步避免电动工具使用过程中输入电压与额定电压不匹配的可能性，从而提升电动工具的安全性，提升用户体验效果。
在一个实施例中，所述电动工具还包括警报装置；当所述输入接头的输入电压超出所述电压阈值，所述电压检测器控制所述输入接头与所述控制器之间的电路断开，并控制所述警报装置工作。
在一个实施例中，所述电压检测器向所述控制器传递所述输入电压的检测结构，所述控制器根据所述检测结果控制所述电机；所述电动工具还包括第一电压转换模块，所述第一电压转换模块电性连接于所述控制器与所述输入接头之间，以通过所述第一电压转换模块为所述控制器供电。
上述电动工具供电系统，电压检测器与控制器电性连接。该电压检测器实时检测供电装置的输入电压大小，且控制器根据该输入电压大小控制电机工作。该电压检测器的设置可以避免电动工具使用过程中输入电压与额定电压不匹配的可能性，从而提升电动工具的安全性，提升用户体验效果。
在一个实施例中，所述第一电压转换模块与所述输入接头之间还电性串联有第一开关；所述第一开关电性连接有开关控制电路；所述开关控制电路导通时，所述第一开关闭合。
在一个实施例中，所述开关控制电路与所述输入接头电性连接，且所述开关控制电路与所述输入接头之间还设有主开关，以通过所述主开关控制所述开关控制电路的导通与否。
上述电动工具供电系统，通过主开关控制开关控制电路的导通与否，从而通过主开关控制控制器的供电，使用更加方便，提升了用户的体验效果。
在一个实施例中，所述控制器与所述电机之间电性连接有第二开关，以控制所述电机所在电路的通断；所述第二开关受所述控制器控制。
在一个实施例中，所述电动工具还包括第二电压转换模块；所述第二电压转换模块电性连接于所述输入接头与所述第二开关之间，以通过所述第二电压转换模块和所述第二开关向所述电机供电；所述第二电压转换模块受所述控制器控制。
上述电动工具供电系统，当电动工具的输入电压不等于电动工具的额定电压时，第二电压转换模块可以将该电压进行转换是指与额定电压相等。该电动工具供电系统，可以进一步确保电动工具的电压与额定电压相等，从而提升电动工具的使用便捷性和安全性，提升用户的体验效果。
附图说明
图1为本申请第一实施例中电动工具供电系统的结构示意图。
图2为本申请第一实施例中电动工具的电路结构示意图。
图3为本申请第一实施例中电动工具的另一种电路结构示意图。
图4为本申请第二实施例中电动工具的电路结构示意图。
图5为本申请第三实施例中电动工具的电路结构示意图。
具体实施方式
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合附图对本发明的具体实施方式做详细的说明。在下面的描述中阐述了很多具体细节以便于充分理解本发明。但是本发明能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本发明内涵的情况下做类似改进，因此本发明不受下面公开的具体实施例的限制。
第一实施例：
本申请提供一种电动工具供电系统10，以通过一根电缆200适配不同的电动工具300。如图1所示，该电动工具供电系统10包括：供电装置100、电动工具300及电性连接于供电装置100和电动工具300之间的电缆200。
具体的，该供电装置100包括外壳101、电源模块102、和电源模块102电性连接的供电接口104、电压切换电路105及电压转换开关106。其中，电源模块102位于外壳内，包括多个电连接的电池，电池之间串联和/或并联连接，电源模块102的输出电力连接到供电接口104；所述供电接口104设置在外壳上，所述电缆200安装到供电接口104上获得电源模块102的电力，向电动工具300供电；所述电压切换电路105位于电源模块102和供电接口104之间，并连接到位于外壳上的、由用户操作的电压转换开关106，用户操作电压转换开关106从而控制电压切换电路105调整供电接口104的输出电压。例如，电压转换开关106为一个多档旋钮开关，有20、40、60V三档，电压切换电路105为串并联切换电路，可改变电源模块102的串并联关系，使得电源模块102的输出电力的电压在20V、40V、60V中切换。当用户旋转电压转换开关106选择20V时，触发电压切换电路105改变串并联关系，电源模块102输出20V的电力，从而供电接口104获得20V电压，对外部的电缆200传输。供电接口104为导电金属，与电源模块102电性连接，以用于输出电源模块102的电能。本领域技术人员可以理解的是，电压切换电路105也可以是一个可调节输出的DC/DC模块，可根据电压转换开关106调整输出电压，或者其他实施方式。
电缆200包括第一端202和与第一端202电性连接的第二端204。电缆200的第一端202与电源102的供电接口104电性连接，第二端204与电动工具300的电力输入口电性连接，从而使供电时，在供电装置100、电缆200和电动工具300内形成电流回路。电动工具的获得输入电压的电力输入口为一个电缆接口， 对应的电缆200的第二端204是一个普通的电缆口，可通用的安装到不同额定工作电压的多个电动工具的电缆接口上对其供电。电动工具的电力输入口为其它形式时，如可安装电池包的滑轨安装口，对应的电缆200的第二端204可以设有转接头，该转接头可以与不同额定工作电压的电动工具300相适配，以使电缆200可以与不同的电动工具300电性连接。
电动工具300与电缆200的第二端204电性连接，以受供电装置100的供电。电动工具300受电能驱动时工作。
该电动工具供电系统10工作时，电缆200电性连接于供电装置100与电动工具300之间。此时，通过用户操作的电压转换开关106来调节供电装置100的输出电压，使电动工具300的输入电压与电动工具300的额定电压相适配，再控制供电装置100向电动工具300输出电能即可使电动工具300工作。
该电动工具供电系统10，一根相同的电缆200应用于额定工作电压不同的多种电动工具300。同时，供电装置100上还设有用户操作的电压转换开关106，从而控制供电装置100的输出电压，避免同一供电装置100和电缆200适配额定工作电压不同的多种电动工具300时，因电动工具300的输入电压与电动工具300的额定电压不匹配而产生事故。该电动工具供电系统10，只需一根电缆200即可通用不同的电动工具300，节省电缆200购买成本，使用更加方便，从而提升了用户的体验效果。
进一步的，如图2所示，为本申请的第一实施例的电动工具300的电路图上述电动工具300包括输入接口302(上述电力输入口)、与输入接口302电性连接的电压匹配检测电路400和与电压匹配检测电路400连接来获得电力的工具工作电路500。所述电压匹配检测电路400从输入接口302获得电力，并有一个电力输出，该电力输出通过供电线传递给所述工具工作电路500。所述工具工 作电路500包括用户操作的主开关312、控制器304、电机306等工具必须的电路，当工具工作电路500从电力线获得电力且用户按下主开关启动工具，控制器304获电工作并控制电机306的运行。其中，输入接口302为导电金属，用于和电缆200的第二端204电性连接并物理接合。。电机306的供电导线通过一个放电开关连接到所述供电线上，控制器304工作时发出控制信号控制放电开关的通断，放电开关断开，电机与电力线断开，电机停机。即电机306根据控制器304发出的控制信号工作或停止工作。
所述电压匹配检测电路400用于检测所述输入接口302的输入电压，并控制输入接口302与工具工作电路500之间的电路通断。
具体来说，该实施例中，工具工作电路500与输入接口302之间的线路唯一，且该线路上设有电压匹配检测电路400，以使电压匹配检测电路400可以控制工具工作电路500与输入接口302之间的线路通断。此时，该电压匹配检测电路400内可以设有一电压阈值。当输入接口302的输入电压值满足该电压阈值，电压匹配检测电路400则控制输入接口302与工具工作电路500之间的电路导通，即电压匹配检测电路400正常的向所述供电线输出电力；否则，当输入接口302的输入电压超出该电压阈值，电压匹配检测电路400则控制输入接口302与工具工作电路500之间的电路断开，即电压匹配检测电路400停止向供电线输出电力，工具工作电路500断电不工作。
在该实施例中，电压匹配检测回路400的电压阈值可以设为电动工具300的额定电压阈值。此时，当电动工具300的输入电压在电动工具300的额定电压阈值内时，电动工具300可通电工作。否则，电动工具300无法通电工作。该电压匹配检测电路400的设置可以进一步避免电动工具300使用过程中输入电压与额定电压不匹配的可能性，避免因供电装置100的故障导致供电接口104 的输出不匹配用户的选择而损坏电动工具，从而提升电动工具300的安全性，提升用户体验效果。
进一步的，如图3所示，该电动工具300还可以包括警报装置311。
警报装置311连接电压匹配检测电路400，且受其控制。此时，当电压匹配检测电路400检测到输入接口302的输入电压超出电压阈值时，可以控制警报装置311工作，发出警报。
该警报装置311可以是蜂鸣器或指示灯等电致发声或电致发光器件，以起到警报作用。
如图4所示，为本申请的第二实施例中的电动工具300的电路图，与上述第一实施例不同的是，第二实施例无上述电压匹配检测电路400，第二实施例中的所述警报装置311连接到控制器304，由控制器304控制，输入接口302的供电线直接连接到工作电路500对其供电，工作电路500包括所述控制器304、第一开关316(上述放电开关)、所述电机306，连接方式同上。进一步的，第二实施例的电动工具包括电压检测器310，电性连接于输入接口302与控制器304之间，用于检测输入接口302的输入电压，并将该输入电压的检测结果传递至控制器304。控制器304获取该输入电压的检测结果后，根据该输入电压的检测结果控制电机306工作。
同时，该电动工具300还包括第一电压转换模块308，第一电压转换模块308电性连接于控制器304与输入接口302之间。所述第一电压转换模块30将输入接口302的输任一电压转进行转换，得到一个输出电压，将输入接口302的输入电压进行转换，并将三输出电压提供于控制器304，此时控制器304上电工作。例如，控制器304的工作电压为5V，即控制器304在5V电压的驱动下才可以工作。此时，第一电压转换模块308即用于将输入接口302的输入电压转 换至5V，并馈电于控制器304，使控制器304得以进入工作状态。
控制器304在工作状态中，根据电压检测器310对输入电压的检测结果来控制电机306工作与否。电压检测器310对输入接口302的输入电压进行检测后，将检测结果传递至控制器304。控制器304内可以设有一电压阈值，该电压阈值可以对应于电机306工作的额定电压。当控制器304获取到输入接口302的输入电压的检测结果，将该检测结果与电压阈值进行对比。当输入电压的大小在电压阈值内，则可以控制电机306所在电路导通即第一开关316导通，使电机306通电工作。反之，当输入电压的大小超出电压阈值，则可以控制电机306所在电路断开即第一开关316断开。
该电动工具供电系统10，电压检测器310与控制器304电性连接。该电压检测器310实时检测供电装置100的输入电压大小，且控制器304根据该输入电压大小控制电机306工作。该电压检测器310的设置可以避免电动工具300使用过程中输入电压与额定电压不匹配的可能性，避免因供电装置100的故障导致供电接口104的输出不匹配用户的选择而损坏电动工具，从而提升电动工具300的安全性，提升用户体验效果。
进一步的，仍然如图4所示，第一电压转换模块308与输入接口302之间还电性串联有用于控制第一电压转换模块308所在电路导通与否的第二开关318。该第二开关318闭合时，第一电压转换模块308可以进行电压转换，从而为控制器304供电。反之，该第二开关318断开时，第一电压转换模块308无法工作。
为对该第二开关318进行控制，可以在电动工具300的回路之间设有一开关控制电路314。该开关控制电路314与第二开关318电性连接，以当开关控制电路314导通时，第二开关318闭合。开关控制电路314未导通时，第二开关 318断开。所述开关控制电路314连接到所述控制器304，所述控制器304可输出一个控制信号控制开关控制电路的通断。
进一步地，为方便对该电动工具供电系统10进行控制，所述主开关312电性连接于开关控制电路314与输入接口302之间，当用户操作主开关312由断开变为闭合时，所述开关控制电路314从输入接口检测到电平变化，此时开关控制电路314瞬时导通，控制第二开关318瞬时导通，此时第一电压转换模块工作，控制器得电工作，同时控制器304输出一个控制信号lock给所述开关控制电路314，锁定开关控制电路304和第二开关318的导通。
由上，当主开关312闭合时，控制器304即可通电工作。此时，控制器304可以根据输入接口302的输入电压大小，控制电机306是否工作。
在一个实施例中，如图4所示，控制器304与电机306之间还电性连接有所述第一开关316。第一开关316用于控制电机306所在电路的导通与否，且第一开关316受控制器304控制。当控制器304控制第一开关316闭合时，电机306所在电路导通。反之，当控制器304控制第一开关316断开时，电机306所在电路断开。
如图4所示，为本申请的第三实施例中的电动工具300的示意图，与上述第二实施例不同的是，该电动工具300还可以包括第二电压转换模块320和第三开关322。第二电压转换模块320电性连接于输入接口302和第三开关322之间，以当第三开关322闭合时，第二电压转换模块320可以向电机306供电。第二电压转换模块320也与控制器304电性连接，以受控制器304控制。
具体来说，该第二电压转换模块320用于将输入接口302的输入电压转换至电机306工作的额定电压。
当供电装置100向电动工具300的输入接口302供电时，电压检测器310 检测到电压大小，并将该检测结果传递至控制器304。输入接口302有两条供电线路对电机供电，第一供电线路上所述输入接口302通过第一开关316直接连接到电机供电，第二供电线路上所述输入接口302通过第二电压转换模块320连接到第三开关322再连接到电机供电。控制器304对该检测结果进行判断。若该检测结果在控制器304预设的电压阈值内，则控制器304控制第一开关316闭合，切断第三开关322，电机306即可工作。若该检测结果超出电压阈值，则控制器304控制第二电压转换模块320工作。第二电压转换模块320将输入电压转换至电动工具300的额定工作电压。此时，再控制控制第三开关322导通，控制第一开关316断开，使第二电压转换模块320通过第三开关322向电机306供电，电机306即可工作。
该电动工具供电系统10，当电动工具300的输入电压不等于电动工具300的额定电压时，第二电压转换模块320可以将该电压进行转换是指与额定电压相等。该电动工具供电系统10，可以进一步确保电动工具300的电压与额定电压相等，从而提升电动工具300的使用便捷性和安全性，提升用户的体验效果。
以下从两个具体实施例(上述第一、第三实施例)对本申请的电动工具供电系统10进行描述，第二实施例基本同第三实施例，不再赘述。
在一个具体实施例中，结合图1和图3，本申请的电动工具供电系统10，包括供电装置100、电缆200及电动工具300。
其中，供电装置100包括电源模块102，电源模块102由四个完全相同的20V直流电池组成。供电接口104与电源模块102电性连接，以输出电能。电压切换电路105设于供电接口104与电源102之间，用户操作电压转换开关106来控制电压切换电路105，从而通过改变四个直流电池的连接方式改变供电装置 100的输出电压。例如，当供电装置100需要输出20V电压时，可以通过电压切换电路105使多个20V直流电池并联；当供电装置100需要输出80V电压时，可以通过电压切换电路105使四个20V直流电池串联。
电缆200的第一端202与供电装置100的输出接口电性连接。电缆200的第二端204用于与电动工具300电性连接，从而使供电装置100与电动工具300之间导通。为使供电装置100与电缆200可以适配不同的电动工具300，电缆200的第二端204可以设有转接头。该转接头与不同电动工具300的输入接口302相适配。电动工具至少包括额定工作电压不同的第一工具和第二工具。该电缆可连接到第一工具和第二工具上，输出对应的额定工作电压。
电动工具300包括输入接口302及串联的电压匹配检测电路400、工具工作电路500；还包括与电压匹配检测电路400连接的警报装置311。电压匹配检测电路400内设有电压阈值，且电压阈值与电动工具300的额定工作电压范围相等。
当该电动工具供电系统10工作时，通过电压转换开关106调节供电装置100的输出电压，并使用电缆200连通供电装置100与电动工具300。电压匹配检测电路400用于检测输入接口302的输入电压，当输入接口302的输入电压值满足该电压阈值，电压匹配检测电路400则控制输入接口302与工具工作电路500之间的电路导通，电机306通电工作。
若用户忘记调节供电装置100的输出电压，致使电动工具300的输入电压不满足额定工作电压范围时，此时，输入接口302的输入电压值不满足电压阈值，电压匹配检测电路400310则控制工具工作电路500与输入接口302之间的电路断开，并控制警报装置311所在电路导通。此时，警报装置311工作。
在另一个具体的实施例中，结合图1和图5，本申请的电动工具供电系统 10，包括供电装置100、电缆模块200及电动工具300。
其中，供电装置100包括电源模块102，电源模块102为四个完全相同的20V直流电池组成。供电接口104与电源模块102电性连接，以输出电能。电压切换电路105设于供电接口104与电源102之间，用户操作电压转换开关106来控制电压切换电路105，通过改变四个直流电池的连接方式改变供电装置100的输出电压。例如，当供电装置100需要输出20V电压时，可以通过电压切换电路105使多个20V直流电池并联；当供电装置100需要输出80V电压时，可以通过电压切换电路105使四个20V直流电池串联。
电缆200的第一端202与供电装置100的输出接头电性连接。电缆200的第二端204用于与电动工具300电性连接，从而使供电装置100与电动工具300之间导通。为使供电装置100与电缆200可以适配不同的电动工具300，电缆200的第二端204可以设有转接头。该转接头与不同电动工具300的输入接口302相适配。电动工具至少包括额定工作电压不同的第一工具和第二工具。该电缆可连接到第一工具和第二工具上，输出对应的额定工作电压。
电动工具300包括输入接口302、电压检测器310、控制器304、第一开关316和电机306；还包括第一电压转换模块308、第二开关318、开关控制电路314和主开关312；以及第二电压转换模块320、第三开关322。其中，控制器304内设有电压阈值，且电压阈值与电动工具300的额定工作电压范围相等。
电动工具300内各器件的连接方式为：输入接口302、电压检测器310和控制器304形成一条回路，该回路用于检测输入电压的大小，并将该检测结果传递至控制器304。输入接口302、第二开关318、第一电压转换模块308、控制器304形成第二条回路，该回路用于为控制器304提供工作电能。输入接口302、主开关312、开关控制电路314及控制器304形成第三条回路，该回路用于控制 第二条回路，以实现主开关312断开时电动工具300完全断电。输入接口302第一开关316及电机306形成第四条回路，第一开关316受控制器304控制，该回路用于输入电压符合上述电压阈值时，向电机306内通电工作。输入接口302、第二电压转换模块320、第三开关322与电机306形成第五条回路，且第二电压转换模块320、第三开关322受控制器304控制，该回路用于输入电压不符合上述电压阈值时，经第二电压转换模块320转换电压，向电机306内通电工作。
当该电动工具供电系统10工作时，通过电压转换开关106调节供电装置100的输出电压，并使用电缆200连通供电装置100与电动工具300。此时，电动工具300的输入接口302具有电压。按下主开关312，使开关控制电路314通电，控制第二开关318闭合。第一电压转换模块308将该电压转换为控制器304的工作电压，如5V，并向控制器304供电，使控制器304工作。电压检测器310用于检测输入接口302的输入电压，并将该检测结果传递至控制器304。控制器304将输入电压的检测结果与控制器304内预设的电压阈值进行对比。
当输入接口302的输入电压值满足该电压阈值，电压检测器310则控制第一开关316闭合。此时，由输入接口302、第一开关316及电机306形成的第四条回路闭合，电机306得以通电工作。
若用户忘记调节供电装置100的输出电压，致使电动工具300的输入电压不满足额定工作电压范围时，此时，控制器304控制第二电压转换模块320工作，并控制第三开关322闭合。此时，由输入接口302、第二电压转换模块320、第三开关322与电机306形成的第五条回路闭合，电机306得以通电工作。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技 术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (7)

  1. 一种电动工具供电系统，其特征在于，包括：
    供电装置，包括电源、与所述电源电性连接的供电接口、电压切换电路及电压转换开关；所述电源包括多个电连接的电池，电池之间串联和/或并联连接，所述电压切换电路与电压转换开关电性连接于所述供电接口与所述电源之间，通过操作电压转换开关控制电压转换电路切换电池之间的连接状态，以控制所述供电接口的输出不同的电压；所述电压转换开关包括至少两个档位，第一档位对应第一电池连接状态，输出第一电压，第二档位对应第二电池连接状态，输出第二电压，调节所述电压转换开关的档位可切换电源的多个电池之间的串并联关系，；
    电缆，包括第一端和与所述第一端电性连接的第二端；所述第一端与所述供电接口电性连接；所述第二端设有转接头，所述转接头可通用地与第一电动工具配接，也可与第二电动工具配接，所述第一电动工具与所述第二电动工具的额定工作电压不同；
    电动工具，与所述转接头电性连接，接收所述供电装置的电能；所述电动工具包括：输入接头，所述输入接头与所述电缆的转接头电性连接，输入供电装置的电能；电压检测器以及与电压检测器连接来获得电力工具工作电路；所述电压检测器电性连接于所述输入接头与电动工具的工作电路之间，所述电压检测器设有电压阈值，接收输入接头传输的电能后，检测所述输入接头的输入电压值并与预设电压阈值比较，当所述输入接头的输入电压满足电压阈值，所述电压检测器控制所述输入接头与所述工具工作电路之间的电路导通；
    所述工具工作电路包括：用户操作的主开关、控制器及电机；当工具工作电路从所述输入接头获得电力且用户按下主开关启动工具时，控制器发出控制信号控制电机工作或停止工作。
  2. 根据权利要求1所述的电动工具供电系统，其特征在于，所述电动工具还包括警报装置；当所述输入接头的输入电压超出所述电压阈值，所述电压检测器控制所述输入接头与所述控制器之间的电路断开，并控制所述警报装置工作。
  3. 根据权利要求1所述的电动工具供电系统，其特征在于，所述电压检测器向所述控制器传递所述输入电压的检测结果，所述控制器根据所述检测结果控制所述电机；所述电动工具还包括第一电压转换模块，所述第一电压转换模块电性连接于所述控制器与所述输入接头之间，以通过所述第一电压转换模块为所述控制器供电。
  4. 根据权利要求3所述的电动工具供电系统，其特征在于，所述第一电压转换模块与所述输入接头之间还电性串联有第一开关；所述第一开关电性连接有开关控制电路；所述开关控制电路导通时，所述第一开关闭合。
  5. 根据权利要求4所述的电动工具供电系统，其特征在于，所述开关控制电路与所述输入接头电性连接，且所述开关控制电路与所述输入接头之间还设有主开关，以通过所述主开关控制所述开关控制电路的导通与否。
  6. 根据权利要求3所述的电动工具供电系统，其特征在于，所述控制器与所述电机之间电性连接有第二开关，以控制所述电机所在电路的通断；所述第二开关受所述控制器控制。
  7. 根据权利要求6所述的电动工具供电系统，其特征在于，所述电动工具还包括第二电压转换模块；所述第二电压转换模块电性连接于所述输入接头与所述第二开关之间，以通过所述第二电压转换模块和所述第二开关向所述电机供电；所述第二电压转换模块受所述控制器控制。
PCT/CN2020/114837 2019-09-12 2020-09-11 电动工具供电系统 WO2021047651A1 (zh)

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