CN113676168A - Accidental start prevention circuit and electric appliance after power restoration - Google Patents
Accidental start prevention circuit and electric appliance after power restoration Download PDFInfo
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- CN113676168A CN113676168A CN202110803146.XA CN202110803146A CN113676168A CN 113676168 A CN113676168 A CN 113676168A CN 202110803146 A CN202110803146 A CN 202110803146A CN 113676168 A CN113676168 A CN 113676168A
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- 230000002265 prevention Effects 0.000 title description 6
- 238000001514 detection method Methods 0.000 claims abstract description 40
- 239000003990 capacitor Substances 0.000 claims description 45
- 230000004913 activation Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied
- H03K17/223—Modifications for ensuring a predetermined initial state when the supply voltage has been applied in field-effect transistor switches
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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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- Emergency Protection Circuit Devices (AREA)
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Abstract
The invention relates to an accidental start preventing circuit after power supply is recovered and an electric appliance. The control circuit in the accidental start preventing circuit after the power supply is repeated is connected with the power supply circuit through the switch circuit, the control circuit is connected with the power supply circuit through the power supply detection circuit, and the control circuit is connected with the driving circuit. The control circuit detects the output level of the power supply detection circuit after being electrified, and if the output level is a first preset signal, the control circuit controls the driving circuit to work; and if the output level is the second preset signal, the control circuit controls the drive circuit to stop working. The invention can detect the re-power supply in the switch closing state, and requires the user to open the switch and close the switch again after the re-power supply to start the circuit, thereby avoiding the danger caused by sudden start.
Description
Technical Field
The invention relates to the field of electric appliance switch control, in particular to an accidental start preventing circuit after power supply is recovered and an electric appliance.
Background
People inevitably can appear the condition of outage in the use electrical apparatus process, for example supply battery power consumption leads to the outage, and the plug is become flexible to drop leads to the outage etc.. After power failure, a user often forgets to close the switch or cannot determine the on-off state of the switch, and if the switch of the electric appliance is still in the closed state after the power failure, the electric appliance can suddenly work after the power supply battery is replaced or the power supply is switched on again, so that danger exists.
Disclosure of Invention
The invention aims to solve the technical problem of providing an accidental start preventing circuit and an electrical appliance after power supply is restored, aiming at the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the circuit for preventing accidental starting after power supply recovery comprises a control circuit, a power supply detection circuit, a driving circuit and a switch circuit, wherein the control circuit is connected with the power supply circuit through the switch circuit, the control circuit is connected with the power supply circuit through the power supply detection circuit, and the control circuit is connected with the driving circuit;
the control circuit detects the output level of the power supply detection circuit after being electrified, and if the output level is a first preset signal, the control circuit controls the drive circuit to work; and if the output level is a second preset signal, the control circuit controls the drive circuit to stop working.
Further, in the circuit for preventing accidental start after power restoration of the present invention, the first preset signal is a high level, and the second preset signal is a pulse signal.
Further, in the circuit for preventing accidental startup after power supply recovery, the power supply detection circuit comprises a resistor R11, a resistor R12, a resistor R13, a capacitor C11, a pull-up resistor R14 and a MOS transistor Q11;
two ends of the resistor R11 are respectively connected to two ends of the capacitor C11, a first end of the capacitor C11 is connected to the anode of the power supply circuit, a second end of the capacitor C11 is connected to the first end of the resistor R12, a second end of the resistor R12 is grounded through the resistor R13, a second end of the resistor R12 is connected to the gate of the MOS transistor Q11, the source of the MOS transistor Q11 is grounded, the drain of the MOS transistor Q11 is connected to the control circuit, and the drain of the MOS transistor Q11 is connected to the power supply terminal VDD through the pull-up resistor R14.
Further, in the circuit for preventing accidental startup after power supply recovery, the power supply detection circuit comprises a resistor R21, a resistor R22, a resistor R23, a capacitor C21, a pull-up resistor R24 and a MOS transistor Q21;
two ends of the resistor R21 are respectively connected to two ends of the capacitor C21, a first end of the resistor R22 is connected to the positive electrode of the power supply circuit, a second end of the resistor R22 is connected to the first end of the capacitor C21, a second end of the capacitor C21 is grounded through the resistor R23, a second end of the capacitor C21 is connected to the gate of the MOS transistor Q21, the source of the MOS transistor Q21 is grounded, the drain of the MOS transistor Q21 is connected to the control circuit, and the drain of the MOS transistor Q21 is connected to the power supply terminal VDD through the pull-up resistor R24.
Further, in the circuit for preventing accidental start after power restoration of the present invention, the first preset signal is a low level, and the second preset signal is a pulse signal.
Further, in the circuit for preventing accidental startup after power supply recovery, the power supply detection circuit (30) comprises a resistor R31, a resistor R32, a capacitor C31, a pull-up resistor R33 and a MOS transistor Q31;
a first end of the resistor R31 is connected with the anode of the power supply circuit, a second end of the resistor R31 is connected with the gate of the MOS transistor Q31, the source of the MOS transistor Q31 is grounded, and the drain of the MOS transistor Q31 is connected with the control circuit; the second end of the resistor R31 is grounded through the resistor R32; the second end of the resistor R31 is grounded through the capacitor C31, and the drain of the MOS transistor Q31 is connected with the power supply end VDD through the pull-up resistor R33.
Further, in the circuit for preventing accidental start after power restoration, the driving circuit is a motor driving circuit.
Further, in the circuit for preventing accidental startup after power restoration, the power supply circuit is a battery pack or a direct current power supply circuit.
In addition, the invention also provides an electric appliance which comprises the circuit for preventing the accidental starting after the power supply is recovered.
Further, in the electric appliance of the present invention, the electric appliance is an electric power tool.
The circuit and the electric appliance for preventing the accidental starting after the power supply is recovered have the following beneficial effects: the invention can detect the re-power supply in the switch closing state, and requires the user to open the switch and close the switch again after the re-power supply to start the circuit, thereby avoiding the danger caused by sudden start.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a circuit diagram of an accidental start prevention circuit after power supply is restored according to an embodiment of the present invention;
FIG. 2 is a circuit diagram of a power supply detection circuit according to an embodiment of the present invention;
FIG. 3 is a circuit diagram of a power supply detection circuit according to an embodiment of the present invention;
fig. 4 is a circuit diagram of a power supply detection circuit according to an embodiment of the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
In a preferred embodiment, referring to fig. 1, the circuit for preventing accidental start after power supply is resumed in this embodiment includes a control circuit 10, a power supply circuit 20, a power supply detection circuit 30, a driving circuit 40, and a switch circuit 50, where the control circuit 10 is connected to the power supply circuit 20 through the switch circuit 50, the control circuit 10 is connected to the power supply circuit 20 through the power supply detection circuit 30, and the control circuit 10 is connected to the driving circuit 40. The control circuit 10 is configured to control an operating state of the driving circuit 40 according to a detection signal of the power supply detection circuit 30, the power supply circuit 20 is configured to provide power, the power supply detection circuit 30 is configured to detect a power supply state of the power supply circuit 20, the driving circuit 40 is configured to drive a load, and the switching circuit 50 has two operating states of on and off.
The working principle of the circuit for preventing accidental starting after power restoration is as follows: when the power supply circuit 20 supplies power normally, the control circuit 10 is powered on and enters a working state after the switch circuit 50 is closed, and the control circuit 10 is powered off after the switch circuit 50 is disconnected. In the prior art, after the switch circuit 50 is closed, the control circuit 10 can directly control the driving circuit 40 to enter a working state to drive the load to work, and the working mode can cause potential safety hazards when the power supply circuit 20 is replaced, that is, the switch circuit 50 is in the closed state, after the power supply circuit 20 is replaced, the driving circuit 40 directly enters the working state, and potential safety hazards exist in the accidental starting.
In order to avoid the potential safety hazard caused by the accidental start, the power supply detection circuit 30 is provided in this embodiment, and the power supply detection circuit 30 is configured to detect the power supply state of the power supply circuit 20. Specifically, the control circuit 10 does not directly control the driving circuit 40 to operate after each power-on, but first detects the output level of the power supply detection circuit 30, and then determines whether to start the driving circuit 40 according to the output level of the power supply detection circuit 30. That is, after the control circuit 10 is powered on, the output level of the power supply detection circuit 30 is detected, and if the output level is the first preset signal, the control circuit 10 controls the driving circuit 40 to operate; if the output level is the second preset signal, the control circuit 10 controls the driving circuit 40 not to operate.
Alternatively, the first predetermined signal is a high level, and the second predetermined signal is a pulse signal, which is a short-time pulse signal. That is, the power supply detection circuit 30 outputs a high level when the power supply circuit 20 is not replaced, and the power supply detection circuit 30 outputs a pulse signal when the power supply circuit 20 is replaced.
Referring to fig. 2, in the accidental start prevention circuit after power supply is restored in some embodiments, the power supply detection circuit 30 includes a resistor R11, a resistor R12, a resistor R13, a capacitor C11, a pull-up resistor R14, and a MOS transistor Q11, two ends of the resistor R11 are respectively connected to two ends of the capacitor C11, a first end of the capacitor C11 is connected to the positive electrode of the power supply circuit 20, a second end of the capacitor C11 is connected to a first end of the resistor R12, a second end of the resistor R12 is grounded through the resistor R13, a second end of the resistor R12 is connected to the gate of the MOS transistor Q11, a source of the MOS transistor Q11 is grounded, a drain of the MOS transistor Q11 is connected to the control circuit 10, and a drain of the MOS transistor Q11 is connected to the power supply terminal VDD through the pull-up resistor R14; alternatively, pull-up resistor R14 may be integrated into control circuit 10. The working principle of the power supply detection circuit 30 is as follows: in this embodiment, the resistance relationships among the resistor R11, the resistor R12, and the resistor R13 should satisfy: when the capacitor C11 is fully charged, the divided voltage of the resistor R11, the resistor R12 and the resistor R13 at the gate of the MOS transistor Q11 cannot turn on the MOS transistor Q11, and when the capacitor C11 is not fully charged, the divided voltage at the gate of the MOS transistor Q11 can turn on the MOS transistor Q11. That is, when the power supply circuit 20 stops supplying power and then supplies power again, for example, a battery pack is replaced, the voltage dividing circuit composed of the resistor R12 and the resistor R13 charges the capacitor C11, and at the same time, the voltage dividing circuit formed by the resistor R12 and the resistor R13 turns on the MOS transistor Q11, and the MOS transistor Q11 is turned off after the capacitor C11 is fully charged. That is, after the power supply circuit 20 is replaced, the MOS transistor Q11 changes from the off state to the on state and then to the off state, and this process generates a pulse signal, and the control circuit 10 receives the pulse signal, which indicates that the power supply circuit 20 is replaced this time. If the power supply circuit 20 is not replaced, the switch circuit 50 is closed, the control circuit 10 is powered on to operate, and at this time, the MOS transistor Q11 remains in an off state, i.e., remains in a high state, and no pulse signal is detected. As can be seen from the above principle, the power supply detection circuit 30 can recognize that the power supply circuit 20 is powered again, thereby avoiding the danger of sudden start-up.
Referring to fig. 3, in the accidental start prevention circuit after power supply is restored in some embodiments, the power supply detection circuit 30 includes a resistor R21, a resistor R22, a resistor R23, a capacitor C21, a pull-up resistor R24, and a MOS transistor Q21, two ends of the resistor R21 are respectively connected to two ends of the capacitor C21, a first end of the resistor R22 is connected to the positive electrode of the power supply circuit 20, a second end of the resistor R22 is connected to the first end of the capacitor C21, a second end of the capacitor C21 is grounded through the resistor R23, a second end of the capacitor C21 is connected to the gate of the MOS transistor Q21, a source of the MOS transistor Q21 is grounded, a drain of the MOS transistor Q21 is connected to the control circuit 10, and a drain of the MOS transistor Q21 is connected to the power supply terminal VDD through the pull-up resistor R24; alternatively, pull-up resistor R24 may be integrated into control circuit 10. The working principle of the power supply detection circuit 30 is as follows: in this embodiment, the resistance relationships among the resistor R21, the resistor R22, and the resistor R23 should satisfy: when the capacitor C21 is fully charged, the divided voltage of the resistor R21, the resistor R22 and the resistor R23 at the gate of the MOS transistor Q21 cannot turn on the MOS transistor Q21, and when the capacitor C21 is not fully charged, the divided voltage at the gate of the MOS transistor Q21 can turn on the MOS transistor Q21. That is, when the power supply circuit 20 stops supplying power and then supplies power again, for example, a battery pack is replaced, the voltage dividing circuit composed of the resistor R22 and the resistor R23 charges the capacitor C21, and at the same time, the voltage dividing circuit formed by the resistor R22 and the resistor R23 turns on the MOS transistor Q21, and the MOS transistor Q21 is turned off after the capacitor C21 is fully charged. That is, after the power supply circuit 20 is replaced, the MOS transistor Q21 changes from the off state to the on state and then to the off state, and this process generates a pulse signal, and the control circuit 10 receives the pulse signal, which indicates that the power supply circuit 20 is replaced this time. If the power supply circuit 20 is not replaced, the switch circuit 50 is closed, and the control circuit 10 is powered on to operate, at this time, the MOS transistor Q21 remains in an off state, i.e., remains in a high state, and no pulse signal is detected. As can be seen from the above principle, the power supply detection circuit 30 can recognize that the power supply circuit 20 is powered again, thereby avoiding the danger of sudden start-up.
Alternatively, the first predetermined signal is a low level, and the second predetermined signal is a pulse signal, which is a short-time pulse signal. That is, the operation principle will be described below with an example of a circuit in which the power supply detection circuit 30 outputs a low level when the power supply circuit 20 is not replaced and the power supply detection circuit 30 outputs a pulse signal when the power supply circuit 20 is replaced.
Referring to fig. 4, in the circuit for preventing accidental start after power supply is restored in some embodiments, the power supply detection circuit 30 includes a resistor R31, a resistor R32, a capacitor C31, a pull-up resistor R33, and a MOS transistor Q31, a first end of the resistor R31 is connected to the positive electrode of the power supply circuit 20, a second end of the resistor R31 is connected to the gate of the MOS transistor Q31, the source of the MOS transistor Q31 is grounded, and the drain of the MOS transistor Q31 is connected to the control circuit 10; the second end of the resistor R31 is grounded through a resistor R32; the second end of the resistor R31 is grounded through a capacitor C31, and the drain electrode of the MOS transistor Q31 is connected with the power supply end VDD through a pull-up resistor R33; alternatively, pull-up resistor R33 may be integrated into control circuit 10. The working principle of the power supply detection circuit 30 is as follows: when the power supply circuit 20 stops supplying power and supplies power again, for example, a battery pack is replaced, the voltage dividing circuit composed of the resistor R31 and the resistor R32 charges the capacitor C31, the gate of the MOS transistor Q31 is at a low level before the capacitor C31 is charged, the MOS transistor Q31 is disconnected, and the control circuit 10 detects a high level; after the capacitor C31 is charged, the gate of the MOS transistor Q31 is at a high level, the MOS transistor Q31 is turned on, and the control circuit 10 detects the low level, that is, the power supply detection circuit 30 generates a pulse signal before and after the capacitor C31 is charged. When the control circuit 10 detects the pulse signal, it means that the power supply circuit 20 supplies power again after stopping supplying power, and in order to avoid an accident, the control circuit 10 controls the driving circuit 40 not to operate. If the power supply circuit 20 is not replaced, the switch circuit 50 is closed again, the control circuit 10 is powered on to operate, at this time, the MOS transistor Q31 is kept in the on state, that is, kept in the low level state, and when the control circuit 10 detects the low level, it indicates that the power supply circuit 20 is not replaced, and the control circuit 10 controls the drive circuit 40 to operate.
Alternatively, because the special operating principle of this embodiment is easy to cause the user to misunderstand that the electrical appliance is damaged, when the control circuit 10 detects that the power supply circuit 20 is powered off and then supplies power again, the user may be prompted to turn off and turn on the control circuit 10 again by sending a prompt message, for example, sending a voice prompt message through an audio playing module, or displaying a text prompt message, a picture prompt message, or a video prompt message using a display screen.
This embodiment can detect the power resupply under switch closure state, requires the user to break the switch and close again after the power resupply just can start circuit, avoids the danger that the sudden start brought.
In some embodiments, the power restoration and then accidental start prevention circuit 40 is a motor driving circuit for driving a motor. Alternatively, the driving circuit 40 may be another load driving circuit.
In some embodiments, the power supply circuit 20 is a battery or a dc power supply circuit.
In a preferred embodiment, the electric appliance of the present embodiment includes the circuit for preventing the accidental start after the power supply is restored as in the above embodiments. Alternatively, the appliance is a power tool.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. The circuit is characterized by comprising a control circuit (10), a power supply circuit (20), a power supply detection circuit (30), a drive circuit (40) and a switch circuit (50), wherein the control circuit (10) is connected with the power supply circuit (20) through the switch circuit (50), the control circuit (10) is connected with the power supply circuit (20) through the power supply detection circuit (30), and the control circuit (10) is connected with the drive circuit (40);
the control circuit (10) is powered on and then detects the output level of the power supply detection circuit (30), and if the output level is a first preset signal, the control circuit (10) controls the driving circuit (40) to work; and if the output level is a second preset signal, the control circuit (10) controls the drive circuit (40) to stop working.
2. The circuit of claim 1, wherein the first predetermined signal is high and the second predetermined signal is a pulse signal.
3. The circuit for preventing the accidental start after the power supply is restored as claimed in claim 2, wherein the power supply detection circuit (30) comprises a resistor R11, a resistor R12, a resistor R13, a capacitor C11, a pull-up resistor R14 and a MOS transistor Q11;
two ends of the resistor R11 are respectively connected to two ends of the capacitor C11, a first end of the capacitor C11 is connected to the anode of the power supply circuit (20), a second end of the capacitor C11 is connected to the first end of the resistor R12, a second end of the resistor R12 is grounded through the resistor R13, a second end of the resistor R12 is connected to the gate of the MOS transistor Q11, the source of the MOS transistor Q11 is grounded, the drain of the MOS transistor Q11 is connected to the control circuit (10), and the drain of the MOS transistor Q11 is connected to the power supply terminal VDD through the pull-up resistor R14.
4. The circuit for preventing the accidental start after the power supply is restored as claimed in claim 2, wherein the power supply detection circuit (30) comprises a resistor R21, a resistor R22, a resistor R23, a capacitor C21, a pull-up resistor R24 and a MOS transistor Q21;
two ends of the resistor R21 are respectively connected to two ends of the capacitor C21, a first end of the resistor R22 is connected to the positive electrode of the power supply circuit (20), a second end of the resistor R22 is connected to the first end of the capacitor C21, a second end of the capacitor C21 is grounded through the resistor R23, a second end of the capacitor C21 is connected to the gate of the MOS transistor Q21, the source of the MOS transistor Q21 is grounded, the drain of the MOS transistor Q21 is connected to the control circuit (10), and the drain of the MOS transistor Q21 is connected to the power supply terminal VDD through the pull-up resistor R24.
5. The circuit of claim 1, wherein the first predetermined signal is low and the second predetermined signal is a pulse signal.
6. The circuit for preventing the accidental start after the power supply is restored as claimed in claim 5, wherein the power supply detection circuit (30) comprises a resistor R31, a resistor R32, a capacitor C31, a pull-up resistor R33 and a MOS transistor Q31;
the first end of the resistor R31 is connected with the anode of the power supply circuit (20), the second end of the resistor R31 is connected with the gate of the MOS transistor Q31, the source of the MOS transistor Q31 is grounded, and the drain of the MOS transistor Q31 is connected with the control circuit (10); the second end of the resistor R31 is grounded through the resistor R32; the second end of the resistor R31 is grounded through the capacitor C31, and the drain of the MOS transistor Q31 is connected with the power supply end VDD through the pull-up resistor R33.
7. The circuit of claim 1, wherein the drive circuit (40) is a motor drive circuit.
8. The circuit of claim 1, wherein the power supply circuit (20) is a battery or a dc power supply circuit.
9. An electrical appliance comprising a circuit as claimed in any one of claims 1 to 8 which is protected against accidental activation after power is restored.
10. The electrical appliance according to claim 9, characterized in that the electrical appliance is a power tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110803146.XA CN113676168B (en) | 2021-07-15 | 2021-07-15 | Unexpected start-up circuit and electrical apparatus are prevented after recovering power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110803146.XA CN113676168B (en) | 2021-07-15 | 2021-07-15 | Unexpected start-up circuit and electrical apparatus are prevented after recovering power supply |
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| CN113676168A true CN113676168A (en) | 2021-11-19 |
| CN113676168B CN113676168B (en) | 2024-09-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117748691A (en) * | 2024-02-20 | 2024-03-22 | 荣耀终端有限公司 | Resume power supply circuit, battery control module and electronic equipment |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201490717U (en) * | 2009-08-31 | 2010-05-26 | 南京德朔实业有限公司 | Multiple protection of electric tool |
| CN101924363A (en) * | 2010-08-31 | 2010-12-22 | 深圳拓邦股份有限公司 | Protection circuit for preventing misoperations and solar power generation system applying same |
| CN203660533U (en) * | 2014-01-22 | 2014-06-18 | 科都电气有限公司 | Power-off protection circuit |
| CN204538696U (en) * | 2015-05-04 | 2015-08-05 | 苏州百微成智能科技有限公司 | Power-off protection control device, power-off protection control circuit and electric tool |
| CN205407252U (en) * | 2016-02-02 | 2016-07-27 | 苏州百微成智能科技有限公司 | Unexpected power supply detected equipment, unexpected power supply protection device reach electric tool including it |
| CN109361205A (en) * | 2018-12-10 | 2019-02-19 | 深圳和而泰智能控制股份有限公司 | A kind of power-down protection circuit and electric tool |
| CN209001611U (en) * | 2018-09-28 | 2019-06-18 | 浙江特康电子科技有限公司 | The battery pack of signaling switch control detects control circuit |
| US20190207403A1 (en) * | 2017-12-28 | 2019-07-04 | Nanjing Chervon Industry Co., Ltd. | Power tool |
| WO2020094548A1 (en) * | 2018-11-05 | 2020-05-14 | Metabowerke Gmbh | Restart protection device |
| CN210577798U (en) * | 2019-09-10 | 2020-05-19 | 深圳和而泰智能控制股份有限公司 | Power-on protection circuit and electric tool |
-
2021
- 2021-07-15 CN CN202110803146.XA patent/CN113676168B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201490717U (en) * | 2009-08-31 | 2010-05-26 | 南京德朔实业有限公司 | Multiple protection of electric tool |
| CN101924363A (en) * | 2010-08-31 | 2010-12-22 | 深圳拓邦股份有限公司 | Protection circuit for preventing misoperations and solar power generation system applying same |
| CN203660533U (en) * | 2014-01-22 | 2014-06-18 | 科都电气有限公司 | Power-off protection circuit |
| CN204538696U (en) * | 2015-05-04 | 2015-08-05 | 苏州百微成智能科技有限公司 | Power-off protection control device, power-off protection control circuit and electric tool |
| CN205407252U (en) * | 2016-02-02 | 2016-07-27 | 苏州百微成智能科技有限公司 | Unexpected power supply detected equipment, unexpected power supply protection device reach electric tool including it |
| US20190207403A1 (en) * | 2017-12-28 | 2019-07-04 | Nanjing Chervon Industry Co., Ltd. | Power tool |
| CN109980625A (en) * | 2017-12-28 | 2019-07-05 | 南京德朔实业有限公司 | A kind of electric tool |
| CN209001611U (en) * | 2018-09-28 | 2019-06-18 | 浙江特康电子科技有限公司 | The battery pack of signaling switch control detects control circuit |
| WO2020094548A1 (en) * | 2018-11-05 | 2020-05-14 | Metabowerke Gmbh | Restart protection device |
| CN112955285A (en) * | 2018-11-05 | 2021-06-11 | 麦太保有限公司 | Restarting a protection device |
| CN109361205A (en) * | 2018-12-10 | 2019-02-19 | 深圳和而泰智能控制股份有限公司 | A kind of power-down protection circuit and electric tool |
| CN210577798U (en) * | 2019-09-10 | 2020-05-19 | 深圳和而泰智能控制股份有限公司 | Power-on protection circuit and electric tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117748691A (en) * | 2024-02-20 | 2024-03-22 | 荣耀终端有限公司 | Resume power supply circuit, battery control module and electronic equipment |
| CN117748691B (en) * | 2024-02-20 | 2024-07-05 | 荣耀终端有限公司 | Resume power supply circuit, battery control module and electronic equipment |
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