CN211656115U - Low standby power consumption circuit and stirrer - Google Patents

Abstract

The application provides a low standby power consumption circuit and a stirrer. The low standby power consumption circuit comprises a power supply, a power supply control circuit, a main control circuit and a standby awakening and locking circuit. The power supply is connected with the main control circuit and used for supplying power to the main control circuit. The standby awakening and locking circuit is connected with the power supply control circuit, and the power supply control circuit is connected with the power supply. And in a standby state, the standby awakening and locking circuit controls the conduction of the power supply and the main control circuit through the power supply control circuit. The application provides a low standby power consumption circuit cuts off being connected of power and master control circuit under standby state to can awaken up and switch on with main control circuit with locking circuit trigger power by the standby, can save the power electric quantity under the standby state, and can the quick response user's operation, convenient to use. The stirrer provided by the application comprises the low standby power consumption circuit.

Description

Low standby power consumption circuit and stirrer

Technical Field

The application relates to the technical field of kitchen appliances, in particular to a low standby power consumption circuit and a stirrer.

Background

Kitchen appliances have become household appliances commonly used in families due to cleanness, safety and convenient use. Some users are used to keep the kitchen appliance in a standby state after using the kitchen appliance, rather than cutting off the power. The kitchen appliance in the standby state can quickly respond to the operation of the user, and the use of the user is convenient. However, in general, the internal circuit of the kitchen appliance in the standby state still consumes power. Especially for some kitchen appliances using batteries as power sources, standby power consumption causes fast consumption of the batteries, and frequent charging or battery replacement is required, which brings inconvenience.

SUMMERY OF THE UTILITY MODEL

The application provides a low standby power consumption circuit and a stirrer.

This application provides a low standby power consumption circuit on the one hand, including power, power control circuit, master control circuit and standby awakening and locking circuit, the power with master control circuit links to each other for master control circuit power supply, standby awakening and locking circuit with power control circuit links to each other, power control circuit with the power links to each other, under the standby state, standby awakening and locking circuit pass through power control circuit control the power with master control circuit's switching on. The application provides a low standby power consumption circuit cuts off being connected of power and master control circuit under standby state to can awaken up and switch on with main control circuit with locking circuit trigger power by the standby, can save the power electric quantity under the standby state, and can the quick response user's operation, convenient to use.

Further, the standby awakening and locking circuit comprises an operation switch, the operation switch is connected with the power control circuit and used for communicating the power supply and the main control circuit through the power control circuit in a standby state, the operation switch is simultaneously connected with the main control circuit, and the main control circuit detects the state of the operation switch in a working state. In some embodiments, the operation switch is connected to both the power control circuit and the main control circuit, and in the standby state, the power control circuit is controlled to conduct the power supply and the main control circuit, and in the working state, the main control circuit detects the state of the operation switch to determine whether to cut off the power supply and the main control circuit to enter the standby state. Namely, one operation switch is adopted, and the functions of standby awakening and standby locking can be realized.

Furthermore, the standby awakening and locking circuit comprises a first diode and a second diode, one end of the operating switch is grounded, the other end of the operating switch is connected with the cathode of the first diode and the cathode of the second diode, the anode of the first diode is connected with the main control circuit, and the anode of the second diode is connected with the power control circuit. In some embodiments, the first diode and the second diode are arranged to perform an isolation function, so as to prevent current from flowing backwards or leakage current.

Furthermore, the standby awakening and locking circuit comprises a first current-limiting resistor connected between the anode of the first diode and the main control circuit, and a first pull-up resistor connected with the main control circuit. In some embodiments, a current limiting resistor and a pull-up resistor are provided to enhance circuit stability.

Furthermore, the power supply control circuit is connected with the main control circuit, and the main control circuit is used for controlling the on-off of the power supply and the main control circuit through the power supply control circuit according to the detected state of the operating switch. In some embodiments, the power control circuit is connected to the main control circuit, and the main control circuit maintains the conduction of the power control circuit when the operation switch is released, and the conduction is maintained by the control of the main control circuit, so that the circuit is more stable.

Furthermore, the power control circuit comprises an MOS tube, the grid electrode of the MOS tube is connected with the standby awakening and locking circuit, and the source electrode and the drain electrode of the MOS tube are connected between the power supply and the main control circuit. In some embodiments, the MOS tube is used for realizing the conduction between the power supply and the main control circuit, so that larger current can be borne, and the reliability of the circuit is ensured.

Furthermore, the power control circuit comprises a triode, the base electrode of the triode is connected with the main control circuit, and the collector electrode and the emitter electrode of the triode are connected between the grid electrode of the MOS tube and the grounding point. In some embodiments, a triode is used to control the MOS transistor, so that a large current circuit can be controlled by a small current.

Furthermore, the power control circuit comprises a second current limiting resistor and a second pull-up resistor, the second current limiting resistor is connected between the grid of the MOS tube and the standby wake-up and locking circuit, and the second pull-up resistor is connected with the power and the grid of the MOS tube. In some embodiments, the current limiting resistor is arranged to protect the circuit, the stability of the circuit is enhanced, and the pull-up resistor is arranged to pull the grid of the MOS tube to the power supply voltage when the MOS tube is turned off so as to ensure the turn-off.

Furthermore, the power control circuit comprises a first driving resistor and a second driving resistor, the first driving resistor is connected between the base electrode of the triode and the main control circuit, and the second driving resistor is connected with the base electrode and the emitting electrode of the triode. In some embodiments, the first and second driving resistors are provided to enhance the stability of the circuit.

Another aspect of the present application provides an agitator including a low standby power consumption circuit as described above, wherein the power source in the low standby power consumption circuit includes a battery. The stirrer provided by the application has the beneficial effects as the stirrer is provided with the low standby power consumption circuit.

Drawings

Fig. 1 is a circuit block diagram of an embodiment of a low standby power consumption circuit according to the present application.

Fig. 2 is a circuit diagram of an embodiment of the low standby power consumption circuit of the present application.

FIG. 3 is a schematic view of an embodiment of the agitator of the present application.

FIG. 4 is a control flow diagram of an embodiment of the blender according to the present application.

The reference numbers illustrate: 1-a power supply; 2-a master control circuit; 3-a power supply control circuit; 4-standby wake-up and lock-up circuitry; 5-a stirrer; 51-a speed governor; 52-key; 53-a battery; 54-a circuit board; 55-a motor; 56-stirring blade.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below do not represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The low standby power consumption circuit and the stirrer according to an embodiment of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, a low standby power consumption circuit according to an embodiment of the present application is applied to a kitchen appliance. The low standby function circuit comprises a power supply 1, a power supply control circuit 3, a main control circuit 2 and a standby awakening and locking circuit 4. The power supply 1 is connected with the main control circuit 2 and used for supplying power to the main control circuit 2. The power supply control circuit 3 is connected with the positive electrode V _ BAT of the power supply 1, and the standby awakening and locking circuit 4 is connected with the power supply control circuit 3. In a standby state, the power supply control circuit 3 disconnects the power supply 1 and the main control circuit 2. When a user triggers the standby awakening and locking circuit 4 in a standby state, the standby awakening and locking circuit 4 controls the power supply 1 to be conducted with the main control circuit 2 through the power supply control circuit 3, the circuit is in a normal working state at the moment, and when the user inputs and executes the operation of the corresponding function, the kitchen appliance can execute the corresponding function. According to the low standby power consumption circuit, the power supply 1 and the main control circuit 2 are disconnected in a standby state; when the standby mode is to be switched to the working mode, the standby wake-up and lock circuit 4 triggers the power supply 1 to be conducted with the main control circuit 2. Therefore, the electric quantity of the power supply 1 can be saved in the standby state, the operation of a user can be responded quickly, and the use is convenient.

In this embodiment, the standby wake-up and lock circuit 4 may be configured to wake up the main control circuit 2 when the kitchen appliance is in a standby state, and lock the kitchen appliance in the standby state when the kitchen appliance is in an operating state. The waking up of the main control circuit 2 means that the power supply 1 and the main control circuit 2 are connected to enable the main control circuit 2 to work normally. The locking in the standby state means that the power supply 1 is disconnected from the main control circuit 2, so that the main control circuit 2 cannot normally operate, and the main control circuit 2 can normally operate only after being awakened again. The standby wake-up and lock circuit 4 includes an operation switch, and the operation switch is operated by a user to implement wake-up and lock. In some embodiments, the operating switch is a push button switch, the depression of which is used to wake up or lock. When the kitchen appliance is in a standby state, the button switch is pressed, and the main control circuit 2 is awakened to enter a normal working state; when the machine is in a working state, the button switch is pressed, the connection between the main control circuit 2 and the power supply 1 is cut off, and the kitchen appliance enters a standby state. In this embodiment, the operation switch is connected to the power control circuit 3, and is used to communicate the power supply 1 and the main control circuit 2 through the power control circuit 3 in a standby state. The operation switch is simultaneously connected with the main control circuit 2, the main control circuit 2 detects the state of the operation switch in a working state, and when the operation switch is detected to be in a pressed state, the main control circuit 2 controls the power control circuit 3 to disconnect the power supply 1 from the main control circuit 2. The operation switch is simultaneously connected with the power supply control circuit 3 and the main control circuit 2, and in a standby state, the operation switch is connected with hardware to control the power supply control circuit 3 to conduct the power supply 1 and the main control circuit 2; in the operating state, the main control circuit 2 detects the state of the operation switch, and the software controls whether to cut off the power supply 1 and the main control circuit 2 to enter the standby state according to the state of the operation switch. Namely, one operation switch is adopted, the functions of standby awakening and standby locking can be realized, the number of switches is saved, the complexity of circuit connection is reduced, and the circuit is more stable and reliable. In this embodiment, the power control circuit 3 is connected to the main control circuit 2, and the main control circuit 2 is configured to control the on/off of the power supply 1 and the main control circuit 2 through the power control circuit 3 according to the detected state of the operation switch. The power control circuit 3 is connected with the main control circuit 2, and can be kept conducted by the main control circuit 2 after the main control circuit 2 is awakened by the operating switch, and the power control circuit does not need to be kept conducted by the operating switch, and the power supply 1 and the main control circuit 2 are still continuously conducted after the operating switch is released. The power control circuit 3 is controlled by the main control circuit 2 in a software control mode to maintain conduction, and compared with the hardware conduction of an operation switch, the circuit stability is better.

Referring to fig. 2, in a specific circuit, the standby wake-up and lock circuit 4 includes an operating switch K1, a first diode D1, a second diode D2, a first current limit R1 and a first pull-up resistor R2. One end of the operating switch K1 is connected to the ground GND, and the other end is connected to the cathode of the first diode D1 and the cathode of the second diode D2. The anode of the first diode D1 is connected with the main control circuit through a first current limiting resistor R1. In some embodiments, the main control circuit 2 includes a control chip, which may be a single chip microcomputer, for example. The anode of the first diode D1 is connected to a port Lock of the control chip through a first current limiting resistor R1, and the port Lock is used for detecting the state of the operating switch K1 in a working state. The first pull-up resistor R2 is connected between the port Lock of the control chip of the main control circuit and the voltage VDD. The first current limiting resistor R1 and the first pull-up resistor R2 are arranged, so that the stability of the circuit can be enhanced. The anode of the second diode D2 is connected to the power supply control circuit 3. The first diode D1 is provided to isolate the current and prevent the current from flowing back to the voltage VDD through the positive electrode V _ BAT of the power supply 1. The second diode D2 is provided to isolate the current and prevent leakage current from the voltage VDD to the ground GND.

With continued reference to fig. 2, the power control circuit 3 includes a MOS (Metal Oxide Semiconductor field effect) transistor Q2. In this embodiment, the MOS transistor Q2 is a p-channel MOS transistor, the gate of the MOS transistor Q2 is connected to the standby wake-up and lockout 4 circuit, and the source and the drain of the MOS transistor Q2 are connected between the power supply 1 and the main control circuit 2. Specifically, the source of the MOS transistor Q2 is connected to the positive electrode V _ BAT of the power supply 1, and the drain of the MOS transistor Q2 is connected to the main control circuit 2. The V _ POWER terminal in fig. 2 is connected to the main control circuit 2, and is a POWER supply terminal of the main control circuit 2 from the POWER supply 1. In this embodiment, the MOS transistor Q2 is used to realize the conduction between the power supply 1 and the main control circuit 2, so as to carry a large current and ensure the reliability of the circuit. And a second pull-up resistor R6 is connected between the grid of the MOS transistor Q2 and the positive electrode V _ BAT of the power supply. The second pull-up resistor R6 is used to pull the gate of the MOS transistor Q2 to the positive power supply V _ BAT potential when the transistor is turned off, ensuring that the transistor is turned off. A second current limiting resistor R5 is connected between the gate of the MOS transistor Q2 and the standby wake-up and lock circuit 4 to prevent the current from impacting the MOS transistor Q2, thereby enhancing the stability of the circuit. When the kitchen appliance is in a standby state, the MOS transistor Q2 is cut off, and when a user needs to use the kitchen appliance, the operation switch K1 is pressed, so that the power supply 1 forms a conducting loop through the operation switch K1. In one embodiment, the voltage of the positive POWER supply V _ BAT is set to be about 7.4V, the resistance of the second pull-up resistor R6 is about 10K Ω, the resistance of the second current-limiting resistor R5 is about 1K Ω, the voltage drop of the second diode D2 is about 0.6V, the gate voltage of the MOS transistor Q2 is (V _ BAT-0.6)/11+0.6, and is calculated to be about 1.2V, at this time, the MOS transistor Q2 is normally turned on, the POWER supply 1 normally supplies POWER to the main control circuit 2 through the POWER supply terminal V _ POWER, and at this time, the kitchen appliance can normally respond to the input of the user. In order to maintain the conduction of the MOS transistor Q2 after the power is supplied to the master control circuit 2, the power control circuit 3 further includes a transistor Q1, a base of the transistor Q1 is connected to the master control circuit 2, and a collector and an emitter of the transistor Q1 are connected between the gate of the MOS transistor Q2 and the ground. In this embodiment, the transistor Q1 is an NPN transistor, a collector of which is connected to the gate of the MOS transistor Q2 through the second current limiting resistor R5, and an emitter of which is grounded. The base of the triode Q1 is connected to the control chip port Power _ on of the main control circuit 2 through a first driving resistor R3, and a second driving resistor R4 is connected between the base and the emitter of the triode Q1. The transistor control MOS transistor Q2 is adopted, so that the large current can be controlled through small current. As described above, when the main control circuit 2 is powered by operating the switch K1, the Power _ on of the chip port of the main control circuit 2 outputs a high level, the transistor Q1 is turned on, the Power supply 1 forms a conduction loop through the transistor Q1, the gate voltage of the MOS transistor Q2 is V _ BAT/11, which is approximately equal to 0.7V, the MOS transistor Q2 is normally turned on, and V _ Power and V _ BAT have the same potential, so that the main control circuit 2 can normally operate. That is, when the operation switch K1 is released, the main control circuit 2 maintains the power supply control circuit 3 in conduction, and the circuit stability is better than when the hardware of the operation switch K1 is in conduction.

In normal operation of the main control circuit 2, the main control circuit 2 continuously detects the level of the Lock port, and when the level of the Lock port is detected to be low, it indicates that the operation switch K1 is pressed, and the user wants to turn off the kitchen appliance. At this time, the port Power _ on of the main control circuit 2 outputs a low level, the triode Q1 is cut off, the gate voltage of the MOS transistor Q2 is equal to the Power supply voltage V _ BAT, the MOS transistor Q2 is cut off and is not turned on at this time, and the Power supply voltage V _ BAT cannot supply Power to the main control circuit 2 through the MOS transistor Q2, so that the main control circuit 2 does not generate Power consumption and consume electric energy, and the kitchen appliance enters a standby low Power consumption state.

Referring to fig. 3, the present application provides a blender 5 including the low standby power consumption circuit as described above. The stirrer 5 comprises a speed regulator 51, a key 52, a battery 53, a circuit board 54, a motor 55 and a stirring blade 56. The low standby power consumption circuit is disposed on the circuit board 54, the battery 53 is used as the power source 1 of the circuit, and the button 52 is used as the operation switch K1 in the circuit for waking up and locking the stirrer 5. In one embodiment, the stirrer 5 is a cordless stirrer, and even though the battery 53 is used as a power supply, the user does not need to connect with the mains supply through a power line during use, so that the mobile use is convenient for the user. Because the energy storage of the battery is limited and the battery has the service life of the charging and discharging times, the use time of the battery after one-time charging can be prolonged, the charging and discharging frequency is reduced, and the service life of the battery is prolonged by applying the low standby power consumption circuit.

Please refer to fig. 4, which is a control flow chart of an embodiment of the agitator 5 of the present application. When the stirrer 5 is in a standby state, the MOS tube Q2 is in a disconnected state, so that the discharge of a main control circuit at the rear end is prevented, at the moment, when the operation switch K1 is pressed, the hardware of the MOS tube Q2 is switched on, the main control circuit is electrified to normally work, the main control circuit controls the Power _ on port to output a high level through software, and at the moment, the MOS tube Q2 is continuously switched on through software control; furthermore, the electric quantity of the battery is detected through the peripheral circuit, and a user can normally use the stirrer when the electric quantity is normal; when the user does not use the stirrer within a certain time (such as 3s-1min), or the user presses the operation switch K1 again, the stirrer is locked again to enter a standby state; if the battery electric quantity is detected to be too low, the user is reminded of needing to charge through the UI interactive interface, the main control circuit controls the Power _ on port to output low level through software, the MOS tube Q2 is disconnected, and the stirrer enters a standby state to prevent the battery from being damaged due to over-discharge of the battery under low electric quantity.

As can be seen from the above description, the low standby power consumption circuit and the stirrer 5 including the low standby power consumption circuit provided by the present application cut off the connection between the power supply 1 and the main control circuit 2 in the standby state, and can trigger the conduction between the power supply 1 and the main control circuit 2 by the standby wake-up and lock circuit 4, so that the power supply capacity in the standby state can be saved, and the operation of the user can be quickly responded, which is convenient to use.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims (10)

1. The utility model provides a low standby power consumption circuit, its characterized in that, including power (1), power control circuit (3), master control circuit (2) and standby awakening and locking circuit (4), power (1) with master control circuit (2) link to each other for master control circuit (2) power supply, standby awakening and locking circuit (4) with power control circuit (3) link to each other, power control circuit (3) with power (1) links to each other, and under standby state, standby awakening and locking circuit (4) pass through power control circuit (3) control power (1) with switching on of master control circuit (2).

2. The low standby power consumption circuit according to claim 1, wherein the standby wake-up and lock circuit (4) comprises an operation switch, the operation switch is connected to the power control circuit (3) for connecting the power supply (1) and the main control circuit (2) through the power control circuit (3) in the standby state, the operation switch is simultaneously connected to the main control circuit (2), and the main control circuit (2) detects the state of the operation switch in the working state.

3. The low standby power consumption circuit according to claim 2, wherein the standby wake-up and lock circuit (4) comprises a first diode and a second diode, one end of the operation switch is grounded, the other end of the operation switch is connected to the cathode of the first diode and the cathode of the second diode, the anode of the first diode is connected to the main control circuit (2), and the anode of the second diode is connected to the power control circuit (3).

4. A low standby power consumption circuit according to claim 3, wherein the standby wake-up and lock-out circuit (4) comprises a first current limiting resistor connected between the first diode anode and the main control circuit, and a first pull-up resistor connected to the main control circuit (2).

5. A circuit with low standby power consumption according to claim 2, wherein the power control circuit (3) is connected to the main control circuit (2), and the main control circuit (2) is configured to control the power supply (1) and the main control circuit (2) to be turned on or off through the power control circuit (3) according to the detected state of the operating switch.

6. Low standby power consumption circuit according to claim 5, characterized in that the power control circuit (3) comprises a MOS transistor, the gate of which is connected to the standby wake-up and lockout circuit (4), and the source and drain of which are connected between the power supply (1) and the main control circuit (2).

7. The low standby power consumption circuit according to claim 6, wherein the power control circuit (3) comprises a triode, a base of the triode is connected with the main control circuit (2), and a collector and an emitter of the triode are connected between the gate of the MOS transistor and a grounding point.

8. The low standby power consumption circuit according to claim 6, wherein the power control circuit (3) comprises a second current limiting resistor and a second pull-up resistor, the second current limiting resistor is connected between the gate of the MOS transistor and the standby wake-up and lock-up circuit (4), and the second pull-up resistor is connected between the power supply and the gate of the MOS transistor.

9. The low standby power consumption circuit according to claim 7, wherein the power control circuit (3) comprises a first driving resistor and a second driving resistor, the first driving resistor is connected between the base of the triode and the main control circuit (2), and the second driving resistor is connected between the base and the emitter of the triode.

10. A whisk, comprising a low standby power consumption circuit according to any of claims 1 to 9, wherein the power supply (1) in the low standby power consumption circuit comprises a battery.

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