Energy-saving system and method for wireless planer in standby state

Abstract

The present invention proposes a system and method for energy saving in standby state of a cordless planer, wherein the system includes: a power switch unit connected to the main power input terminal, used to execute the on-off of the load circuit of the device; a switch control unit, used to control the conduction of the power switch unit; a mechanical control unit, used to control the start and stop of the cordless planer through a physical mechanical switch; a load and control unit, used to receive feedback signals from other functional units, perform logical judgment, and output corresponding control signals; a mechanical button feedback unit, used to detect the on-off state of the physical mechanical switch and feed back to the load and control unit; a control execution unit, used to receive the control signal output by the load and control unit, and perform corresponding control operations. Through the present invention, a switch control circuit based on a triode is proposed, which can greatly reduce the electric energy in the standby state, has a larger withstand voltage value and a wider range of choices, and at the same time reduces the probability of false start-up due to induced voltage.

Description

Technical Field

[0001] The invention relates to the technical field of power supply for wireless planers, and in particular to a standby state energy-saving system and method for wireless planers. Background Art

[0002] In the prior art, for the energy-saving circuit control of the standby state and the working state of the cordless planer, a NOT gate control circuit is often used to control the conduction of the switch control circuit. However, the NOT gate control circuit has an inverter IC chip, which needs to be powered for a long time, so there is a power consumption problem in itself. In addition, the power supply voltage range of the inverter IC chip of the NOT gate control circuit must be relatively wide, otherwise it cannot work normally. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a cordless planer standby state energy-saving system and method to overcome the technical problems of excessive power consumption and inability to work normally when using a NOT gate control circuit to implement cordless planer standby state energy-saving control in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions:

[0005] According to a first aspect of the present invention, there is provided a cordless planer standby state energy saving system, the system comprising:

[0006] A power switch unit, connected to the main power input terminal, used to switch on and off the load circuit of the equipment;

[0007] A switch control unit, connected to the power switch unit, and used to control the conduction of the power switch unit;

[0008] A mechanical control unit, connected to the switch control unit, for controlling the start and stop of the cordless planer through a physical mechanical switch;

[0009] A load and control unit, connected to the power switch unit, for receiving feedback signals from other functional units, performing logical judgment, and outputting corresponding control signals;

[0010] A mechanical button feedback unit, connected to the mechanical control unit and the load and control unit respectively, for detecting the opening and closing state of the physical mechanical switch and feeding back to the load and control unit;

[0011] The control execution unit is connected to the load and control unit, the switch control unit and the mechanical control unit respectively, and is used to receive control signals output by the load and control unit and execute corresponding control operations.

[0012] Optionally, the switch control unit includes a resistor R2, a resistor R3, a capacitor C1, a resistor R4 and a transistor Q2;

[0013] The first end of the resistor R3 is connected to the load power supply VCC_OUT, and the second end is respectively connected to the first end of the capacitor C1, the first end of the resistor R4, the base of the transistor Q2, the mechanical control unit, and the control execution unit;

[0014] The collector of the transistor Q2 is connected to the power switch unit;

[0015] The second end of the capacitor C1 , the second end of the resistor R4 , and the emitter of the transistor Q2 are all grounded.

[0016] Optionally, the power switch unit includes a resistor R1, a resistor R2 and a MOS tube Q1;

[0017] The first end of the resistor R2 is connected to the collector of the transistor Q2, and the second end is respectively connected to the first end of the resistor R1 and the gate of the MOS transistor Q1;

[0018] The second end of the resistor R1 is connected to the main power input terminal VCC_IN and the drain of the MOS tube Q1 respectively;

[0019] The source of the MOS tube Q1 is connected to the load power supply VCC_OUT and the load and control unit respectively.

[0020] Optionally, the load and control unit is a logic-controlled load circuit including an MCU controller;

[0021] The logic control load circuit is used to receive feedback signals from other functional units, perform logic processing on the feedback signals, and output control signals to the control execution unit.

[0022] Optionally, the mechanical control unit includes a mechanical button K1, a resistor R6, a resistor R7 and a diode D1;

[0023] The first end of the mechanical button K1 is connected to the main power input terminal VCC_IN, and the second end is connected to the first end of the resistor R6 and the first end of the resistor R7 respectively;

[0024] The second end of the resistor R6 is connected to the anode of the diode D1;

[0025] The cathode of the diode D1 is connected to the second end of the resistor R3 and the control execution unit respectively;

[0026] The second end of the resistor R7 is connected to the mechanical button feedback unit.

[0027] Optionally, the mechanical button feedback unit includes a resistor R10, a resistor R5 and a transistor Q4;

[0028] The first end of the resistor R10 is respectively connected to the second end of the resistor R7 and the base of the transistor Q4, and the second end is grounded;

[0029] The emitter of the transistor Q4 is grounded, and the collector is connected to the first end of the resistor R5 and the load and the control unit respectively;

[0030] The second end of the resistor R5 is connected to the power supply voltage VDD.

[0031] Optionally, the control execution unit includes a resistor R8, a resistor R9 and a transistor Q3;

[0032] The first end of the resistor R8 is connected to the load and the control unit, and the second end is connected to the first end of the resistor R9 and the base of the transistor Q3 respectively;

[0033] The second end of the resistor R9 and the emitter of the transistor Q3 are both grounded;

[0034] The collector of the transistor Q3 is connected to the cathode of the diode D1 and the second end of the resistor R3 respectively.

[0035] Optionally, the mechanical control unit is further used to control the switch control unit to be turned on when the physical mechanical switch is pressed when the cordless planer is in standby mode;

[0036] The switch control unit is used to control the total power input of the power switch unit to be connected with the load power supply when it is turned on, so that the load circuit of the equipment is powered and the cordless planer enters the working state.

[0037] Optionally, the mechanical button feedback unit is further used to detect the closing state and closing times of the current physical mechanical switch when the cordless planer is in working state, and feed back the closing state and closing times to the load and control unit;

[0038] The mechanical button feedback unit is used to detect the current on state of the physical mechanical switch when the physical mechanical switch is long pressed, and to feed back the on state to the load and control unit;

[0039] The load and control unit is also used to control the control execution unit to be turned on based on the closed state of the physical mechanical switch;

[0040] The control execution unit is also used to receive the control signal output by the load and control unit, and control the switch control unit to disconnect, so that the power switch unit performs a power disconnection action, and the cordless planer enters a standby state.

[0041] According to a second aspect of the present invention, a method for energy saving in a standby state of a cordless shaver is provided, which is applied to the standby state energy saving system of a cordless shaver as described in any one of the first aspects of the present invention, and the method comprises:

[0042] When the cordless planer is in standby mode, the switch control unit is turned on by pressing the physical mechanical switch;

[0043] The switch control unit is used to control the total power input of the power switch unit to be connected with the load power supply, so that the load circuit of the device is powered, and the cordless planer enters a working state;

[0044] and / or,

[0045] When the cordless planer is in working state, a mechanical button feedback unit is used to detect the closing state and closing times of the current physical mechanical switch, and the closing state and closing times are fed back to the load and control unit;

[0046] When the physical mechanical switch is long pressed, the mechanical button feedback unit is used to detect the current on state of the physical mechanical switch, and the on state is fed back to the load and control unit;

[0047] Using the load and the control unit to control the control execution unit to be turned on based on the closed state of the physical mechanical switch;

[0048] The control execution unit receives the control signal output by the load and control unit, controls the switch control unit to disconnect, so that the power switch unit performs a power disconnection action, and the cordless shaver enters a standby state.

[0049] The above one or more technical solutions provided by the present invention may have the following advantages or at least achieve the following technical effects:

[0050] The present invention proposes a cordless planer standby state energy-saving system and method, comprising: a power switch unit connected to a main power input terminal and used to execute the on-off of a load circuit of an equipment; a switch control unit connected to the power switch unit and used to control the conduction of the power switch unit; a mechanical control unit connected to the switch control unit and used to control the start and stop of the cordless planer through a physical mechanical switch; a load and control unit connected to the power switch unit and used to receive feedback signals from other functional units, perform logical judgment, and output corresponding control signals; a mechanical button feedback unit connected to the mechanical control unit and the load and control unit, respectively, and used to detect the on-off state of the physical mechanical switch and feed back to the load and control unit; a control execution unit connected to the load and control unit, the switch control unit, and the mechanical control unit, respectively, and used to receive the control signals output by the load and control unit and perform corresponding control operations. The technical solution of the present invention redesigns and optimizes the circuit for the energy-saving system of the cordless planer in the standby state, and proposes a switching control circuit based on a transistor, which can ensure that the loss in the shutdown state is reduced by at least three orders of magnitude compared with the existing technical solution, and at the same time greatly reduces the probability of false startup caused by induced voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0052] Figure 1 A schematic diagram of a standby energy-saving system for a cordless planer according to an embodiment of the present invention;

[0053] Figure 2 A schematic diagram of a flow chart of a method for saving energy in a standby state of a cordless planer proposed in one embodiment of the present invention;

[0054] Figure 3 This is a flow chart of a method for saving energy in standby state for a cordless planer according to another embodiment of the present invention.

[0055] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] It should be noted that in the present invention, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a device or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a device or system. In the absence of further restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the device or system including the element. In the present invention, unless otherwise clearly specified and defined, the terms "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0058] like Figure 1 As shown, it is a structural schematic diagram of a cordless planer standby state energy-saving system proposed by the present invention, and the system may include: a power switch unit, a switch control unit, a mechanical control unit, a load and control unit, a mechanical button feedback unit and a control execution unit.

[0059] Specifically, the power switch unit is connected to the main power input terminal (i.e., VCC_IN), and can be used to execute the on-off of the device load circuit for the cordless planer; the switch control unit is connected to the power switch unit, and can be used to control the conduction of the power switch unit; the mechanical control unit is connected to the switch control unit, and can be used to control the start and stop of the cordless planer through a physical mechanical switch; the load and control unit is connected to the power switch unit, and can be used to receive feedback signals from other functional units, perform logical judgments, and output corresponding control signals; the mechanical button feedback unit is respectively connected to the mechanical control unit and the load and control unit, and can be used to detect the opening and closing state of the physical mechanical switch and feedback to the load and control unit; the control execution unit is respectively connected to the load and control unit, the switch control unit, and the mechanical control unit, and can be used to receive the control signals output by the load and control unit, and perform corresponding control operations.

[0060] It can be understood that the main power input terminal VCC_IN is input from the power switch unit, and the power switch unit is equivalent to the execution body of the power switch, which is controlled by the switch control unit. The switch control unit is an electronic switch with multiple control terminals, and its control terminal is composed of the feedback voltage of the power switch unit (i.e., VCC_OUT, also known as the load power supply), the control execution unit and the mechanical control unit. Among them, the feedback voltage of the power switch unit and the mechanical control unit control the conduction of the main power supply, and the control execution unit controls the disconnection of the main power supply. The control end of the control execution unit is controlled to be turned on or off by the load and the control unit. The function of the mechanical button feedback unit is to feed back the pressing signal of the physical mechanical button of the mechanical control unit to the load and the control unit, so that the load and the control unit can make logical judgments and control the control execution unit to perform corresponding control operations.

[0061] like Figure 1 As shown, the circuit structure and connection relationship of each functional module are as follows:

[0062] The switch control unit includes a resistor R2, a resistor R3, a capacitor C1, a resistor R4 and a transistor Q2; the first end of the resistor R3 is connected to the load power supply VCC_OUT, and the second end is respectively connected to the first end of the capacitor C1, the first end of the resistor R4, the base of the transistor Q2 and the mechanical control unit, and the control execution unit; the collector of the transistor Q2 is connected to the power switch unit; the second end of the capacitor C1, the second end of the resistor R4 and the emitter of the transistor Q2 are all grounded.

[0063] The power switch unit includes a resistor R1, a resistor R2 and a MOS tube Q1; the first end of the resistor R2 is connected to the collector of the transistor Q2, and the second end is respectively connected to the first end of the resistor R1 and the gate of the MOS tube Q1; the second end of the resistor R1 is respectively connected to the main power input terminal VCC_IN and the drain of the MOS tube Q1; the source of the MOS tube Q1 is respectively connected to the load power supply VCC_OUT and the load and control unit.

[0064] The load and control unit is a logic-controlled load circuit including a load (motor, resistors and capacitors, etc.) and an MCU controller, a logic gate IC, etc.; the logic-controlled load circuit is used to receive feedback signals from other functional units, perform logic processing on the feedback signals, and output control signals to the control execution unit.

[0065] The mechanical control unit includes a mechanical button K1, a resistor R6, a resistor R7 and a diode D1; the first end of the mechanical button K1 is connected to the main power input terminal VCC_IN, and the second end is respectively connected to the first end of the resistor R6 and the first end of the resistor R7; the second end of the resistor R6 is connected to the positive electrode of the diode D1; the negative electrode of the diode D1 is respectively connected to the second end of the resistor R3 and the control execution unit; the second end of the resistor R7 is connected to the mechanical button feedback unit.

[0066] The mechanical key feedback unit includes a resistor R10, a resistor R5 and a transistor Q4; the first end of the resistor R10 is respectively connected to the second end of the resistor R7 and the base of the transistor Q4, and the second end is grounded; the emitter of the transistor Q4 is grounded, and the collector is respectively connected to the first end of the resistor R5 and the load and control unit; the second end of the resistor R5 is connected to the power supply voltage VDD.

[0067] The control execution unit includes a resistor R8, a resistor R9 and a transistor Q3; the first end of the resistor R8 is connected to the load and the control unit, and the second end is respectively connected to the first end of the resistor R9 and the base of the transistor Q3; the second end of the resistor R9 and the emitter of the transistor Q3 are both grounded; the collector of the transistor Q3 is respectively connected to the cathode of the diode D1 and the second end of the resistor R3.

[0068] Thus, the energy-saving system for the cordless planer in standby state proposed in the embodiment of the present invention is constituted, and its working principle is as follows:

[0069] The mechanical control unit can also be used to control the switch control unit to turn on when the physical mechanical switch is pressed when the cordless planer is in standby mode; the switch control unit can also be used to control the total power input of the power switch unit and the load power supply to be turned on when turned on, so that the load circuit of the equipment is powered and the cordless planer enters the working state.

[0070] It should be noted that when the cordless planer device is in standby mode, the main power input terminal VCC_IN is connected to the source of the transistor Q1 and the first end of the physical mechanical button. At this time, it can only be turned on by the physical mechanical switch. If the mechanical button K1 in the mechanical control unit is pressed, the mechanical control unit will control the switch control unit to turn on. The switch control unit is the only control terminal of the power switch unit, and the load power supply is also a control start signal of the switch control unit. Therefore, the power switch unit can maintain the power on state, so that the main power input terminal VCC_IN will be connected to the load power supply VCC_OUT at this time, so that the entire device load circuit of the cordless planer is powered. While controlling the switch control unit, the mechanical control unit also provides feedback to the mechanical button feedback unit, so that the load and the logic control load circuit inside the control unit also receive the closing signal of the mechanical button K1, which provides support for logical judgment. It should be noted that due to the presence of the diode D1 in the mechanical control unit, the mechanical control unit has a one-way control over the switch control unit, and there is no feedback. In other words, the load power supply VCC_OUT will not have any influence on the mechanical button feedback unit, thus ensuring the uniqueness of the mechanical control unit's control over the load and control unit buttons.

[0071] Furthermore, the mechanical button feedback unit can also be used to detect the current closed state and closing times of the physical mechanical switch when the physical mechanical switch is long pressed in the working state of the cordless planer, and feed back the closed state and closing times to the load and control unit; the mechanical button feedback unit can be used to detect the current open state of the physical mechanical switch when the physical mechanical switch is long pressed, and feed back the open state to the load and control unit; the load and control unit can also be used to control the control execution unit to be turned on based on the closed state of the physical mechanical switch; the control execution unit can also be used to receive the control signal output by the load and the control unit, and control the switch control unit to control the disconnection, so that the power switch unit performs the power disconnection operation, and the cordless planer enters the standby state.

[0072] That is to say, when the cordless planer device is in working state and needs to enter standby state, by long pressing the mechanical button K1, the signal will be fed back to the load and control unit. After receiving the feedback signal, the load and control unit will output a control signal after logical judgment to control the transistor Q3 of the control execution unit to turn on. The control execution unit, as a disconnect control terminal of the switch control unit, can control the switch control unit to control the power switch unit to cut off the power after receiving the control signal.

[0073] As a key innovation of the present invention, the embodiment of the present invention proposes a switch control unit based on transistor Q2. In the prior art, a non-gate control circuit is generally used to control the conduction of the switch control circuit, and there is an inverter IC in the non-gate control circuit. The inverter IC is a voltage-controlled device, which can be understood as that when one of the input ends of the inverter IC reaches the turn-on threshold voltage, the P-channel MOS of the switch control circuit will be turned on. Although there is no problem in an ideal electromagnetic environment, in actual circuits, the electromagnetic environment is often not ideal. For example, under common induced voltage environments, the non-gate control circuit is prone to false triggering and turning on the machine. However, the transistor Q2 used in the embodiment of the present invention is a current-controlled device. Only when the base of the transistor Q2 reaches a turn-on voltage of 0.7V (the PN junction conduction voltage value of the silicon tube) and a certain current passes through, can the saturation conduction condition of the transistor be achieved, thereby greatly reducing the probability of false triggering caused by the induced voltage. In addition, the inverter IC itself needs power supply, so even in the shutdown state, the inverter IC itself needs a static current to maintain its normal operation, which is generally in the microampere to milliampere level, depending on the chip selected. However, the transistor Q2 in the embodiment of the present invention does not require a static current. Since the transistor Q2 works in the saturated conduction region and the cut-off region, when VCC_OUT has voltage and driving current capability, the transistor Q2 works in the saturated conduction region, and the device is in the power-on state; when the voltage of VCC_OUT is zero, the transistor Q2 works in the cut-off region, and the current flowing through the collector and emitter of the transistor Q2 is in the nanoampere or picoampere level, which is almost negligible. Therefore, when the transistor Q2 is in the cut-off region, the device has almost no loss of battery power. Experiments have shown that the solution of using the transistor Q2 in the embodiment of the present invention saves at least three orders of magnitude of power loss in the shutdown state compared to the solution of using the inverter IC, and the transistor has a larger withstand voltage and a wider range of choices than the NOT gate IC, while greatly reducing the probability of false startup caused by the induced voltage.

[0074] Furthermore, the embodiment of the present invention also provides a method for applying Figure 1 The energy saving method of the wireless planer standby state of the wireless planer standby state energy saving system shown comprises steps S201-S202:

[0075] Step S201, when the cordless planer is in a standby state, the switch control unit is turned on by pressing a physical mechanical switch;

[0076] Step S202, using the switch control unit to control the total power input of the power switch unit and the load power supply to be turned on, so that the load circuit of the device is powered and the cordless planer enters a working state.

[0077] Furthermore, the embodiment of the present invention also provides another method for applying Figure 1 The energy saving method of the wireless planer standby state of the wireless planer standby state energy saving system shown comprises steps S301 to S304:

[0078] Step S301, when the cordless planer is in working state, the closing state and closing times of the current physical mechanical switch are detected by using the mechanical button feedback unit, and the closing state and closing times are fed back to the load and control unit;

[0079] Step S302, when the physical mechanical switch is long pressed, the mechanical button feedback unit is used to detect the current on state of the physical mechanical switch, and the on state is fed back to the load and the control unit;

[0080] Step S303, using the load and the control unit to control the execution unit to be turned on based on the closed state of the physical mechanical switch;

[0081] Step S304, using the control execution unit to receive the control signal output by the load and the control unit, the switch control unit is controlled to be disconnected, so that the power switch unit performs a power disconnection action, and the cordless planer enters a standby state.

[0082] It should be noted that the specific implementation methods of the steps in the two cordless planer standby state energy saving methods provided in the embodiments of the present invention can be referred to. Figure 1 The corresponding description of the functional modules in the shown system will not be repeated here.

[0083] It should be noted that the serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the concept of the present invention, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

[0084] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A cordless planer standby state energy saving system, characterized in that: The system comprises: A power switch unit, connected to the main power input terminal, used to switch on and off the load circuit of the equipment; A switch control unit, connected to the power switch unit, and used to control the conduction of the power switch unit; A mechanical control unit, connected to the switch control unit, for controlling the start and stop of the cordless planer through a physical mechanical switch; A load and control unit, connected to the power switch unit, for receiving feedback signals from other functional units, performing logical judgment, and outputting corresponding control signals; The mechanical button feedback unit is connected to the mechanical control unit and the load and control unit respectively, and is used to detect the opening and closing state of the physical mechanical switch and feed back to the load and control unit; A control execution unit, connected to the load and control unit, the switch control unit and the mechanical control unit, respectively, for receiving control signals output by the load and control unit and executing corresponding control operations; The switch control unit includes a resistor R2, a resistor R3, a capacitor C1, a resistor R4 and a transistor Q2; The first end of the resistor R3 is connected to the load power supply VCC_OUT, and the second end is respectively connected to the first end of the capacitor C1, the first end of the resistor R4, the base of the transistor Q2, the mechanical control unit, and the control execution unit; The collector of the transistor Q2 is connected to the power switch unit; The second end of the capacitor C1, the second end of the resistor R4 and the emitter of the transistor Q2 are all grounded; The power switch unit includes a resistor R1, a resistor R2 and a MOS tube Q1; The first end of the resistor R2 is connected to the collector of the transistor Q2, and the second end is respectively connected to the first end of the resistor R1 and the gate of the MOS transistor Q1; The second end of the resistor R1 is connected to the main power input terminal VCC_IN and the drain of the MOS tube Q1 respectively; The source of the MOS tube Q1 is connected to the load power supply VCC_OUT and the load and control unit respectively.

2. The system according to claim 1, characterized in that The load and control unit is a logic-controlled load circuit including an MCU controller; The logic control load circuit is used to receive feedback signals from other functional units, perform logic processing on the feedback signals, and output control signals to the control execution unit.

3. The system according to claim 1, characterized in that The mechanical control unit includes a mechanical button K1, a resistor R6, a resistor R7 and a diode D1; The first end of the mechanical button K1 is connected to the main power input terminal VCC_IN, and the second end is connected to the first end of the resistor R6 and the first end of the resistor R7 respectively; The second end of the resistor R6 is connected to the anode of the diode D1; The cathode of the diode D1 is connected to the second end of the resistor R3 and the control execution unit respectively; The second end of the resistor R7 is connected to the mechanical button feedback unit.

4. The system according to claim 3, characterized in that The mechanical key feedback unit includes a resistor R10, a resistor R5 and a transistor Q4; The first end of the resistor R10 is respectively connected to the second end of the resistor R7 and the base of the transistor Q4, and the second end is grounded; The emitter of the transistor Q4 is grounded, and the collector is connected to the first end of the resistor R5 and the load and the control unit respectively; The second end of the resistor R5 is connected to the power supply voltage VDD.

5. The system according to claim 3, characterized in that The control execution unit includes a resistor R8, a resistor R9 and a transistor Q3; The first end of the resistor R8 is connected to the load and the control unit, and the second end is connected to the first end of the resistor R9 and the base of the transistor Q3 respectively; The second end of the resistor R9 and the emitter of the transistor Q3 are both grounded; The collector of the transistor Q3 is connected to the cathode of the diode D1 and the second end of the resistor R3 respectively.

6. The system according to claim 1, characterized in that The mechanical control unit is also used to control the switch control unit to conduct when the physical mechanical switch is pressed when the cordless planer is in standby mode; The switch control unit is used to control the total power input of the power switch unit to be connected with the load power supply when it is turned on, so that the load circuit of the equipment is powered and the cordless planer enters the working state.

7. The system according to claim 1, characterized in that The mechanical button feedback unit is also used to detect the current closing state and closing times of the physical mechanical switch when the cordless planer is in working state, and feed back the closing state and closing times to the load and control unit; The mechanical button feedback unit is used to detect the current on state of the physical mechanical switch when the physical mechanical switch is long pressed, and to feed back the on state to the load and control unit; The load and control unit is also used to control the control execution unit to be turned on based on the closed state of the physical mechanical switch; The control execution unit is also used to receive the control signal output by the load and control unit, and control the switch control unit to disconnect, so that the power switch unit performs a power disconnection action, and the cordless planer enters a standby state.

8. A method for saving energy in standby state of a cordless planer, characterized in that: Applied to the energy-saving system for a cordless shaver in standby state as claimed in any one of claims 1 to 7, the method comprising: When the cordless planer is in standby mode, the switch control unit is turned on by pressing the physical mechanical switch; The switch control unit is used to control the total power input of the power switch unit to be connected with the load power supply, so that the load circuit of the device is powered, and the cordless planer enters a working state; and / or, When the cordless planer is in working state, a mechanical button feedback unit is used to detect the closing state and closing times of the current physical mechanical switch, and the closing state and closing times are fed back to the load and control unit; When the physical mechanical switch is long pressed, the mechanical button feedback unit is used to detect the current on state of the physical mechanical switch, and the on state is fed back to the load and control unit; Using the load and the control unit to control the control execution unit to be turned on based on the closed state of the physical mechanical switch; The control execution unit receives the control signal output by the load and control unit, controls the switch control unit to disconnect, so that the power switch unit performs a power disconnection action, and the cordless shaver enters a standby state.

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