CN219086865U - Self-cutting circuit applied to wireless sweeper and wireless sweeper - Google Patents
Self-cutting circuit applied to wireless sweeper and wireless sweeper Download PDFInfo
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- CN219086865U CN219086865U CN202223074323.4U CN202223074323U CN219086865U CN 219086865 U CN219086865 U CN 219086865U CN 202223074323 U CN202223074323 U CN 202223074323U CN 219086865 U CN219086865 U CN 219086865U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The embodiment of the utility model discloses a self-cutting circuit applied to a wireless sweeper and the wireless sweeper, wherein the self-cutting circuit comprises a switch S1, a resistor R20, a resistor R21, a resistor R23, a resistor R24, a resistor R26, a resistor R27, a triode Q12, a triode Q13, a triode Q14 and a voltage reference chip 431, wherein the base electrode of the triode Q12 is connected with the anode of a battery pack and the emitter electrode of the triode Q12 through a resistor R21; the collector of the triode Q12 is connected with the base electrode of the triode Q13 through a resistor R24; the emitter of the triode Q14 is grounded; the two ends of the switch S1 are respectively connected with an emitter and a collector of the triode Q14; the emitter of the triode Q13 is used for supplying power for the MCU of the wireless sweeper. The utility model enables the internal MCU chip and the peripheral circuit of the wireless sweeper to be completely powered off under the standby condition, reduces the standby power consumption to zero, prolongs the duration of the sweeper and increases the user experience.
Description
Technical Field
The utility model relates to the technical field of household appliances, in particular to a self-cutting circuit applied to a wireless sweeper and the wireless sweeper.
Background
When the traditional wireless sweeper is in standby, the MCU chip enters a dormant state and waits to be awakened, but the MCU chip is not powered off. Therefore, under the standby condition of the wireless sweeper, the MCU chip still needs a certain power consumption to maintain the sleep state despite entering the sleep state, so that the electric quantity of the battery is lost.
Disclosure of Invention
The technical problem to be solved by the embodiment of the utility model is to provide a self-cutting circuit applied to a wireless sweeper and the wireless sweeper, so that when the MCU enters a dormant state, the power supply of the MCU can be cut off.
In order to solve the above technical problems, an embodiment of the present utility model provides a self-cutting circuit applied to a wireless sweeper, which comprises a switch S1, a resistor R20, a resistor R21, a resistor R23, a resistor R24, a resistor R26, a resistor R27, a triode Q12, a triode Q13, a triode Q14 and a voltage reference chip U3, wherein,
the base electrode of the triode Q12 is connected with the anode of the battery pack and the emitter electrode of the triode Q12 through a resistor R21, and is connected with the collector electrode of the triode Q14 through a resistor R26; the collector of the triode Q12 is connected with the base electrode of the triode Q13 through a resistor R24, and is connected with the collector electrode of the triode Q13 through a resistor R20;
the base electrode of the triode Q14 is used for receiving the signal of the MCU of the wireless sweeper, and the emitter electrode of the triode Q14 is grounded; the two ends of the switch S1 are respectively connected with an emitter and a collector of the triode Q14;
the emitter of the triode Q13 is powered by the MCU of the wireless sweeper, and the emitter of the triode Q13 is grounded through a resistor R23 and a resistor R27 which are connected in series;
the R end of the voltage reference chip U3 is connected between the resistor R23 and the resistor R27, the K end is connected with the base electrode of the triode Q13, and the A end is grounded.
Further, the transistor further comprises a resistor R32, and two ends of the resistor R32 are respectively connected with a base electrode and an emitter electrode of the triode Q14.
Further, the transistor further comprises a resistor R22, and two ends of the resistor R22 are respectively connected with a base electrode and a collector electrode of the triode Q13.
Further, the capacitor C5 is further included, one end of the capacitor C5 is grounded, and the other end of the capacitor C5 is connected with the collector electrode of the triode Q13.
Further, the voltage reference chip also comprises a capacitor C6, wherein two ends of the capacitor C6 are respectively connected with an R end and a K end of the voltage reference chip U3.
Further, the triode Q12 is a PNP triode, the triode Q13 is an NPN triode, and the triode Q14 is an NPN triode.
Correspondingly, the embodiment of the utility model also provides a wireless sweeper, which comprises the MCU and the battery pack, and further comprises the self-cutting circuit applied to the wireless sweeper, wherein the MCU and the battery pack are electrically connected with the self-cutting circuit applied to the wireless sweeper.
The beneficial effects of the utility model are as follows: according to the utility model, the internal MCU chip and the peripheral circuit of the wireless sweeper are completely powered off under the standby condition, so that the standby power consumption is reduced to zero, the duration of the sweeper is prolonged, and the user experience is improved; compared with the traditional technology, the standby power consumption of 0W is realized, and the market competitiveness is improved.
Drawings
Fig. 1 is a circuit diagram of a self-cutting circuit applied to a wireless sweeper according to an embodiment of the present utility model.
Detailed Description
It should be noted that, without conflict, the embodiments and features of the embodiments in the present application may be combined with each other, and the present utility model will be further described in detail with reference to the drawings and the specific embodiments.
The wireless sweeper comprises an MCU, a battery pack and a self-cutting circuit applied to the wireless sweeper.
Referring to fig. 1, the self-cutting circuit applied to the wireless sweeper of the present utility model includes a switch S1, a resistor R20, a resistor R21, a resistor R22, a resistor R23, a resistor R24, a resistor R26, a resistor R27, a transistor Q12, a transistor Q13, a transistor Q14, a voltage reference chip U3, a resistor R32, a capacitor C5, and a capacitor C6.
The base electrode of the triode Q12 is connected with the anode of the battery pack and the emitter electrode of the triode Q12 through a resistor R21, and is connected with the collector electrode of the triode Q14 through a resistor R26; the collector of the triode Q12 is connected with the base electrode of the triode Q13 through a resistor R24, and is connected with the collector electrode of the triode Q13 through a resistor R20.
The base electrode of the triode Q14 is used for receiving the signal of the MCU of the wireless sweeper, and the emitter electrode of the triode Q14 is grounded; the two ends of the switch S1 are respectively connected with the emitter and the collector of the triode Q14.
The emitter of the triode Q13 is powered by the MCU of the wireless sweeper, and the emitter of the triode Q13 is grounded through a resistor R23 and a resistor R27 which are connected in series. The triode Q12 is a PNP triode, the triode Q13 is an NPN triode, and the triode Q14 is an NPN triode. The resistance of the resistor R23 is the same as that of the resistor R27.
The R end of the voltage reference chip U3 is connected between the resistor R23 and the resistor R27, the K end is connected with the base electrode of the triode Q13, and the A end is grounded.
The two ends of the resistor R32 are respectively connected with the base electrode and the emitter electrode of the triode Q14. The two ends of the resistor R22 are respectively connected with the base electrode and the collector electrode of the triode Q13. One end of the capacitor C5 is grounded, and the other end of the capacitor C is connected with the collector electrode of the triode Q13. Two ends of the capacitor C6 are respectively connected with the R end and the K end of the voltage reference chip U3.
The working principle of the utility model is as follows:
when the switch S1 is pressed, a current flows through the resistor R21, the resistor R26 and the switch S1 to ground, the potential of the B pole of the transistor Q12 is divided by the resistor R21 and the resistor R26, and at this time, the voltage of the E pole of the transistor Q12 is higher than the voltage of the B pole, and the transistor Q12 is turned on. Transistor Q12 is turned on and current flows through resistor R24 to turn on transistor Q13. At this time, the current of the positive electrode of the battery pack flows through the triode Q12, the resistor R20 and the triode Q13 to supply power to the MCU. The resistor R23 and the resistor R27 divide the voltage by 47K to the voltage reference chip U3, so that the working state of the triode Q13 is controlled, and the E pole voltage of the triode Q13 is relatively constant at 5V. The MCU is electrified to work to give a high level to the MCU-SWI pin at the first time, and the triode Q14 is conducted, so that an MCU power supply circuit is maintained, and the system works normally. When in standby, the MCU-SWI outputs a low level, the triode Q14 is not conducted, so that the triode Q12 is not conducted, the whole system does not form a loop, and is in a power-off state, the power consumption is 0W, and the system is activated from the moment of newly pressing the switch S1.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.
Claims (7)
1. The self-cutting circuit applied to the wireless sweeper is connected between an MCU and a battery pack of the wireless sweeper and is characterized by comprising a switch S1, a resistor R20, a resistor R21, a resistor R23, a resistor R24, a resistor R26, a resistor R27, a triode Q12, a triode Q13, a triode Q14 and a voltage reference chip U3, wherein,
the base electrode of the triode Q12 is connected with the anode of the battery pack and the emitter electrode of the triode Q12 through a resistor R21, and is connected with the collector electrode of the triode Q14 through a resistor R26; the collector of the triode Q12 is connected with the base electrode of the triode Q13 through a resistor R24, and is connected with the collector electrode of the triode Q13 through a resistor R20;
the base electrode of the triode Q14 is used for receiving the signal of the MCU of the wireless sweeper, and the emitter electrode of the triode Q14 is grounded; the two ends of the switch S1 are respectively connected with an emitter and a collector of the triode Q14;
the emitter of the triode Q13 is powered by the MCU of the wireless sweeper, and the emitter of the triode Q13 is grounded through a resistor R23 and a resistor R27 which are connected in series;
the R end of the voltage reference chip U3 is connected between the resistor R23 and the resistor R27, the K end is connected with the base electrode of the triode Q13, and the A end is grounded.
2. The self-cutting circuit for a wireless sweeper of claim 1 further comprising a resistor R32, the resistor R32 having two ends connected to the base and emitter of the transistor Q14, respectively.
3. The self-cutting circuit for a wireless sweeper of claim 1 further comprising a resistor R22, wherein the resistor R22 is connected to the base and collector of the transistor Q13 at each end.
4. The self-cutting circuit for a wireless sweeper of claim 1 further comprising a capacitor C5, the capacitor C5 being grounded at one end and the collector of transistor Q13 at the other end.
5. The self-cutting circuit for a wireless sweeper of claim 1 further comprising a capacitor C6, wherein two ends of the capacitor C6 are connected to the R and K ends of the voltage reference chip U3, respectively.
6. The self-turn-off circuit of claim 1, wherein the transistor Q12 is a PNP transistor, the transistor Q13 is an NPN transistor, and the transistor Q14 is an NPN transistor.
7. A wireless sweeper comprising an MCU and a battery pack, and further comprising a self-disconnecting circuit according to any one of claims 1-6 for use on a wireless sweeper, wherein the MCU and battery pack are electrically connected to the self-disconnecting circuit for use on a wireless sweeper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223074323.4U CN219086865U (en) | 2022-11-21 | 2022-11-21 | Self-cutting circuit applied to wireless sweeper and wireless sweeper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223074323.4U CN219086865U (en) | 2022-11-21 | 2022-11-21 | Self-cutting circuit applied to wireless sweeper and wireless sweeper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219086865U true CN219086865U (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223074323.4U Active CN219086865U (en) | 2022-11-21 | 2022-11-21 | Self-cutting circuit applied to wireless sweeper and wireless sweeper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219086865U (en) |
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2022
- 2022-11-21 CN CN202223074323.4U patent/CN219086865U/en active Active
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