CN210433405U - Machine working circuit and dust collector comprising same - Google Patents
Machine working circuit and dust collector comprising same Download PDFInfo
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- CN210433405U CN210433405U CN201920947360.0U CN201920947360U CN210433405U CN 210433405 U CN210433405 U CN 210433405U CN 201920947360 U CN201920947360 U CN 201920947360U CN 210433405 U CN210433405 U CN 210433405U
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Protection Of Static Devices (AREA)
Abstract
The utility model discloses a machine work circuit reaches dust catcher including it, machine work circuit includes the power, the power includes the power protection circuit who closes the power according to power working parameter and is used for output power working parameter's signal output port, machine work circuit still includes: a load powered by the power source; the driving protection circuit comprises a signal acquisition port which is connected with the signal output port and used for receiving power supply working parameters, and the driving protection circuit is electrically connected between the power supply and the load and disconnects the power supply from the load according to the power supply working parameters received from the signal acquisition port. The utility model discloses in, this machine work circuit's signal acquisition port is direct to be connected with the signal output port of power and controls the load again in order to acquire power operating parameter, and need not set up detection device in addition again, and simple structure, cost are lower.
Description
Technical Field
The utility model provides a machine work circuit, especially a can directly acquire power operating parameter's machine work circuit and reach dust catcher including it.
Background
Typically, a load is connected to a battery to operate the load. Electric motors are required in household appliances, such as suction cleaners, lawn mowers, etc., and are also typically powered by batteries.
In the current production environment, the manufacturer of the production machine does not usually produce the batteries alone, but by purchasing on the market suitable batteries that meet the conditions of the machine. After the battery is purchased, in order to keep the battery and the machine to work normally all the time, a separate current or voltage and temperature protection device is usually required to be arranged on the battery, and meanwhile, a protection device is also required to be designed in the dust collector separately to achieve double protection. However, this protection is costly and the process is complicated.
Therefore, it is necessary to design a low-cost machine operating circuit capable of protecting a battery and a load and a vacuum cleaner including the same.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a machine work circuit, it includes the power, the power includes the power protection circuit who closes the power according to power working parameter and is used for output power working parameter's signal output part, machine work circuit still includes: a load powered by the power source; the driving protection circuit comprises a signal acquisition port which is connected with the signal output port and used for receiving power supply working parameters, and the driving protection circuit is electrically connected between the power supply and the load and disconnects the power supply from the load according to the power supply working parameters received from the signal acquisition port.
As a further improvement of the utility model, the drive protection circuit includes first switch, the input and the output of first switch are connected between power negative pole port and load, the control end of first switch is connected in the break-make of signal acquisition port in order to control first switch.
As a further improvement, the machine operating circuit is still including connecting in the first power end of the anodal port of power, drive protection circuit still includes the second switch, the control end of second switch acquires the port with the signal and is connected, and the input is connected in first power end, and the output connects power negative pole port through first resistance, the control end of first switch is connected in the output of second switch.
As a further improvement of the present invention, the driving protection circuit further includes a third switch and a fourth switch connected between the first switch and the second switch, and control terminals of the third switch and the fourth switch are connected to an output terminal of the second switch; the input end of the third switch is connected with a first power supply end, the output end of the third switch is connected with the input end of the fourth switch, and the output end of the fourth switch is connected with the negative electrode port of the power supply; the control end of the first switch is connected between the output end of the third switch and the input end of the fourth switch.
As a further improvement of the present invention, the driving protection circuit further includes a second resistor and a third resistor, the second resistor and the third resistor are connected in series and have one end connected to the negative port of the power supply and the other end connected between the third switch and the fourth switch; and the control end of the first switch is connected between the second resistor and the third resistor.
As a further improvement of the present invention, the machine working circuit further comprises a low power consumption protection part, the low power consumption protection part comprises a fifth switch and a voltage detection part for detecting the power supply electric quantity, the input end of the fifth switch is connected to the positive terminal of the power supply, and the output end of the fifth switch is connected to the first power supply end; the voltage detection part is connected to the control end of the fifth switch to control the on-off of the fifth switch.
As a further improvement of the utility model, the voltage detection portion includes switch module and partial pressure module, switch module's output with the control end of fifth switch is connected, and switch module's control end is connected with the partial pressure module.
As a further improvement of the present invention, the voltage dividing module includes a first reference resistor connected between the control end of the switch module and the first power end, a second reference resistor connected between the control end of the switch module and the input end, a third reference resistor, and a sixth switch; the control end and the input end of the sixth switch are both connected to the positive port of the power supply, and the output end of the sixth switch is connected to the third reference resistor; the other end of the third reference resistor is connected between the first reference resistor and the second reference resistor; the third reference resistance is less than the second reference resistance, which is less than the first reference resistance.
As a further improvement of the present invention, the machine operating circuit further includes a second power source terminal connected to the positive port of the power source, and the load is connected to the second power source terminal; the machine working circuit further comprises a fuse, and the fuse is connected between the positive port of the power supply and the second power supply end.
The utility model provides a dust catcher including above-mentioned machine work circuit.
The utility model has the advantages that: the utility model discloses in, the signal that utilizes the inside power protection circuit that sets up of power realizes carrying out protection control to the load, and this machine working circuit's signal acquisition port is direct to be connected in order to acquire power working parameter with the signal output port of power promptly, matches with drive protection circuit again and carries out protection control to the load. Therefore, the load operation parameter detection is carried out without arranging an additional detection device in the machine, the load operation can be directly protected, the structure is simpler, and the cost is lower.
Drawings
Fig. 1 is a schematic diagram of the working circuit of the machine of the present invention.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Moreover, repeated reference numerals or designations may be used in various embodiments. These iterations are merely for simplicity and clarity of describing the present invention, and are not intended to represent any correlation between the different embodiments or structures discussed.
As shown in fig. 1, the present invention provides a machine operating circuit that is connected between a power source and a load 40. Generally, the load 40 is a motor, and general household appliances such as a dust collector, a lawn mower, and the like require a power supply to supply power to the motor so as to operate the motor.
The machine operation circuit includes:
a machine operation circuit, comprising:
the power supply comprises a power supply protection circuit for turning off the power supply according to the working parameters of the power supply and a signal output port for outputting the working parameters of the power supply;
a load powered by the power source;
the driving protection circuit comprises a signal acquisition port which is connected with the signal output port and used for receiving power supply working parameters, and the driving protection circuit is electrically connected between the power supply and the load and disconnects the power supply from the load according to the power supply working parameters received from the signal acquisition port.
The utility model discloses in, this machine work circuit's signal acquisition port is direct to be connected in order to acquire power operating parameter with the signal output port of power, matches with drive protection circuit again and controls the load. Therefore, the load working parameters of the load do not need to be detected by additionally arranging a detection device, the load work can be directly protected, the structure is simpler, and the cost is lower.
In this embodiment, the power supply operating parameter is specifically a parameter signal that is output by detecting the voltage, current, temperature, and the like of the power supply. Specifically, the power supply operating parameter may be represented by a power supply under-voltage protection signal and a temperature protection signal. The power protection circuit is arranged in the power supply and protects the power supply, in the embodiment, the power supply adopts a battery, and the battery is usually provided with the power protection circuit to protect the battery from being damaged due to overcurrent and other reasons.
In addition, the under-voltage protection means that if the internal circuit of the device has a short-circuit fault or other reasons, the voltage of the circuit is greatly reduced or even disappears in a short time, which may cause great damage to the circuit and the load 40, and may even burn the load 40. After the line voltage is recovered, if a large number of loads 40 are started at the same time, the voltage is greatly reduced, and the line and the loads 40 are damaged. Therefore, the line voltage causing the load 40 to collapse is called the threshold voltage, and when the line voltage reaches the threshold voltage, the power supply generates the under-voltage protection signal. The power supply monitors the voltage of the battery core and the current of the charge-discharge loop to output an undervoltage protection signal.
Temperature protection refers to monitoring the temperature of the power supply. When the power supply continuously supplies power, the temperature rises, but if the temperature of the power supply is too high, the internal resistance of the power supply is affected, and the circuit and the power supply cannot work safely. Therefore, the temperature causing the power supply to fail to operate normally is called the critical temperature, and when the temperature of the power supply rises to the critical temperature, the power supply outputs the temperature protection signal.
As shown in fig. 1, the driving protection circuit 20 includes a first switch K1, an input end and an output end of the first switch K1 are connected between the negative terminal of the power supply and the load 40, and a control end of the first switch K1 is connected to the signal obtaining port 10 to receive the operating parameters of the power supply and control the on/off of the first switch K1.
Therefore, in the present embodiment, when the control terminal of the first switch K1 receives the power supply operating parameter that is normal, the first switch K1 keeps the connected state, and the load 40 also keeps the connected state; when the control end of the first switch K1 receives power supply working parameters abnormal, the first switch K1 is turned off, and the load 40 is powered off, so as to protect the load 40. Thus, the first switch K1 is employed as the main controller in the present embodiment, and as shown in fig. 1, the first switch K1 is a mos tube. Of course, if the first switch K1 is a triode or other structure, the object of the present invention can be achieved as long as it can receive the power supply operating parameters and turn on or off the first switch K1.
Further, in order to make the on/off of the first switch K1 more stable and better adapt to the operating parameters of the power supply, the control terminal of the first switch K1 is not directly connected to the signal obtaining port 10, the driving protection circuit 20 further includes a second switch K2, and the control terminal of the first switch K1 is connected to the signal obtaining port 10 through a second switch K2. Specifically, the machine operating circuit further includes a first power supply terminal V1 connected to a positive terminal V + of the power supply, the control terminal of the second switch K2 is connected to the signal acquisition port 10, the input terminal of the second switch K2 is connected to the first power supply terminal V1, the output terminal of the second switch K2 is connected to the negative terminal of the power supply through a first resistor R1, that is, the output terminal of the second switch K2 is grounded, and the control terminal of the first switch K1 is connected to the output terminal of the second switch K36. Specifically, in this embodiment, the first power supply terminal V1 is not directly connected to the positive power supply terminal V +, which will be described later.
Therefore, in the present embodiment, when the received power supply operating parameter of the signal obtaining port 10 is normal, the second switch K2 is turned on, so that a current flows through the first resistor R1, and the control terminal of the first switch K1 is connected to the output terminal of the second switch K2, so that a voltage is input to the control terminal of the first switch K1, and therefore the first switch K1 is also turned on. When the received power supply operating parameters are abnormal, the signal acquisition port 10 turns off the second switch K2, so the first switch K1 also turns off, and the load 40 also turns off. In the present embodiment, the second switch K2 is a transistor, but the object of the present invention can be achieved if the second switch K2 is a mos transistor or the like.
Further, in order to make the whole driving protection circuit 20 more stable, the first switch K1 and the second switch K2 are not directly connected, the driving protection circuit 20 further includes a third switch K3 and a fourth switch K4, and the third switch K3 and the fourth switch K4 are connected between the first switch K1 and the second switch K2. The control ends of the third switch K3 and the fourth switch K4 are connected to the output end of the second switch K2, the input end of the third switch K3 is connected with the first power supply end V1, the output end of the third switch K3 is connected with the input end of the fourth switch K4, and the output end of the fourth switch K4 is connected with the negative port of the power supply. The control end of the first switch K1 is connected between the output end of the third switch K3 and the input end of the fourth switch K4. In this embodiment, the third switch K3 and the fourth switch K4 are also triodes, and the object of the present invention can be achieved if they are mos transistors or the like.
As described above, the output terminal of the second switch K2 is connected to the first resistor R1, so that the control terminals of the third switch K3 and the fourth switch K4 are also connected to the first resistor R1, and after the first switch K1 is turned on, the voltage of the first resistor R1 is applied to the control terminals of the third switch K3 and the fourth switch K4, so that the third switch K3 and the fourth switch K4 are also turned on, and the control terminal of the first switch K1 is connected between the third switch K3 and the fourth switch K4, so that the voltage is also applied to the first switch K1, so that the first switch K1 is turned on.
In this embodiment, the driving protection circuit 20 further includes a second resistor R2 and a third resistor R3, the second resistor R2 and the third resistor R3 are connected in series and have one end connected to the negative power port and the other end connected between the third switch K3 and the fourth switch K4. And the control end of the first switch K1 is connected between the second resistor R2 and the third resistor R3. Therefore, in order to further control the on/off of the first switch K1 and make the control more accurate and stable, the second resistor R2 and the third resistor R3 are used for voltage division in the embodiment, so that the first switch K1 can be turned on within a suitable voltage range, and the power supply operating parameter can realize more accurate control on the first switch K1.
Therefore, in the utility model discloses in machine working circuit's drive protection circuit 20 can directly obtain the power operating parameter that the signal acquisition port 10 received to carry out on-off control to first switch K1, make the power after sending power operating parameter, can make load 40 break off, thereby protect load 40. In addition, in this embodiment, a second switch K2 and a first resistor R1 are further provided, and a third switch K3, a fourth switch K4, a second resistor R2, and a third resistor R3 are further provided to improve the accuracy of the power supply operating parameter in controlling the first switch K1, and directly control the on/off of the load.
As shown in fig. 1, the machine operating circuit of the present invention further includes a low power consumption protection unit 30, and the low power consumption protection unit 30 is connected to the drive protection circuit 20 and is controlled in preference to the drive protection circuit 20. Specifically, the low power consumption protection unit 30 includes a fifth switch K5 and a voltage detection unit for detecting the power of the power supply, wherein an input terminal of the fifth switch K5 is connected to a positive power port of the power supply, an output terminal of the fifth switch K5 is connected to the first power terminal V1, and a control terminal of the fifth switch K is connected to the voltage detection unit. In the present embodiment, the fifth switch K5 is also a transistor, and the object of the present invention can be achieved if it is a mos transistor or the like.
When the voltage detection part detects that the electric quantity of the power supply is low and is in a low-voltage state, the fifth switch K5 is switched off; when the voltage detection part detects that the power supply electric quantity is high and is in a normal working state, the fifth switch K5 is conducted. Accordingly, the low power consumption protection unit 30 receives the power supply capacity signal detected by the voltage detection unit, and turns off the fifth switch K5 when the power supply capacity is insufficient, so that the first power supply terminal V1 is also de-energized, the drive protection circuit 20 is also directly de-energized, the first switch K1 is turned off, and the load 40 is also de-energized. Therefore, after the load 40 is stopped due to insufficient power of the power supply, the situation that the battery cell is over-discharged due to continuous discharge of the power supply is prevented.
Further, voltage detection portion includes switch module KN and partial pressure module, switch module KN's output with fifth switch K5's control end is connected, and switch module KN's control end is connected with the partial pressure module. The voltage division module is used for changing the voltage of the control end of the switch module KN and accordingly controlling the on-off of the switch module KN.
Specifically, in this embodiment, the voltage dividing module includes a first reference resistor RS1 connected between the control terminal of the switch module KN and the first power terminal V1, a second reference resistor RS2 connected between the control terminal and the input terminal of the switch module KN, a third reference resistor RS3, and a sixth switch K6; the control end and the input end of the sixth switch K6 are both connected to the positive electrode port of the power supply, and the output end of the sixth switch K6 is connected to the third reference resistor RS 3; the other end of the third reference resistor RS3 is connected between the first reference resistor RS1 and the second reference resistor RS 2. In the present embodiment, the sixth switch K6 is also a transistor, and the object of the present invention can be achieved if it is a mos transistor or the like.
Therefore, when the voltage at the positive power port V + is still higher, the sixth switch K6 is turned on, and the voltage at the control terminal of the switch module KN is the divided voltage of the second reference resistor RS2, so that the switch module KN is turned on, and the fifth switch K5 is also turned on. And at the same time, a current also flows through the first reference resistor RS 1. When the voltage at the positive power port V + is low, the sixth switch K6 is turned off, the voltage at the control terminal of the switch module KN is still the divided voltage of the second reference resistor RS2, but since the sixth switch K6 is turned off, the divided voltage of the second reference resistor RS2 changes, and the fifth switch K5 is turned off. Thus, the above-described low power consumption protection effect can be achieved.
Specifically, the third reference resistor RS3 is smaller than the second reference resistor RS2, and the second reference resistor RS2 is smaller than the first reference resistor RS 1. Therefore, as described above, when the voltage at the positive power port V + is large, so that the sixth switch K6 is turned on, current flows through the third reference resistor RS3 and the second reference resistor RS 2; since the resistance of the second reference resistor RS2 is greater than that of the third reference resistor RS3, the voltage division on the second reference resistor RS2 is large, so that the switch module KN is turned on. Moreover, even after the fifth switch K5 is turned on, a current also flows through the first reference resistor RS1, which is equivalent to the first reference resistor RS1 and the third reference resistor RS3 being connected in parallel, and the resistance of the first reference resistor RS1 is the largest, so that the voltage division on the second reference resistor RS2 is not greatly affected.
When the voltage of the positive electrode port V + of the power supply is small, the sixth switch K6 is turned off, the third reference resistor RS3 is not connected to the circuit, and current passes through the first reference resistor RS1 and the second reference resistor RS 2. At this time, the voltage at the control terminal of the switching module KN is still the voltage at the second reference resistor RS 2. However, the resistance of the first reference resistor RS1 is much larger than that of the second reference resistor RS2, so that the voltage across the second reference resistor RS2 is small enough not to turn on the switch module KN, and thus turn off the fifth switch K5.
Therefore, the present invention provides low power consumption protection for the power supply and the load 40 by the cooperation of the fifth switch K5 and the voltage detection unit, so as to prevent the power supply from being too low but still discharging. And the voltage detection part enables accurate measurement to be carried out on the voltage of the power supply positive electrode port V + through the matching of the switch module KN and the voltage division module. In addition, in the present embodiment, the switch module KN employs a reference voltage chip, and the object of the present invention can be achieved if the switch module KN employs another circuit structure.
In addition, the utility model discloses a machine work circuit is still including connecting in the second power end V2 of the anodal port V + of power, above-mentioned the input of fifth switch K5, sixth switch K6's control end is the input and all connects in second power end V2. The two ends of the load 40 are respectively connected to the second power supply terminal V2 and the power supply negative terminal, and the first power supply terminal V1 is connected to the power supply positive terminal V + through the second power supply terminal V2. The utility model discloses a machine work circuit still includes fuse F1, and fuse F1 is connected between anodal port V + of power and second power end V2. In order to prevent the load 40 from being locked, if the torque is still output when the rotation speed of the load 40 is 0, the current is extremely large, and the fuse F1 is disconnected to further protect the load 40 and the power supply.
Therefore, in the machine operating circuit of the present invention, the control of the fuse F1 is prioritized over the drive protection circuit 20 and the low power consumption protection unit 30. After the fuse F1 is opened, the drive protection circuit 20 and the low power consumption protection unit 30 do not operate, and the load 40 is opened. When the fuse F1 is not opened and the fifth switch K5 of the low power consumption protection unit 30 is opened, the drive protection circuit 20 is not operated any more and the load 40 is turned off. In the case where the fuse F1 is not opened and the low power consumption protection part 30 is also normally operated, the driving protection circuit 20 turns off the load 40 by receiving the power supply operation parameter and turning off the first switch K1 at the time of voltage abnormality and temperature abnormality.
It should be noted that, as shown in fig. 1, the machine working circuit of the present invention further includes devices such as a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a first diode D1, a second diode D2, a third diode D3, and a first capacitor C1, and the effect of the implementation of the structure of the circuit is low, so the connection mode and the effect thereof are not repeated.
Therefore, in summary, the present invention provides a machine working circuit, which mainly includes a driving protection circuit 20, and the driving protection circuit 20 can directly receive the power working parameters through the signal acquisition port 10 and control the load 40, so as to perform under-voltage protection and temperature protection on the power; moreover, the power supply working parameters are directly obtained and then matched with the drive protection circuit 20 to control the load 40, namely, the power supply working parameters do not need to be additionally detected, so that the structure is simpler, and the cost is lower; secondly, the machine working circuit also comprises a low-power consumption protection part 30 which can disconnect the load 40 when the power supply electric quantity is too low, so as to realize low-power consumption protection; finally, the machine working circuit also comprises a fuse F1, so that the locked-rotor protection of the power supply and the load 40 can be realized.
It should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.
The above detailed description of a series of embodiments is only for the purpose of illustration, and is not intended to limit the scope of the invention, which is intended to include all equivalent embodiments or modifications that do not depart from the spirit of the invention.
Claims (10)
1. A machine operating circuit comprising a power supply including a power protection circuit for shutting down the power supply in accordance with a power supply operating parameter and a signal output port for outputting the power supply operating parameter, the machine operating circuit further comprising:
a load powered by the power source;
the driving protection circuit comprises a signal acquisition port which is connected with the signal output port and used for receiving power supply working parameters, and the driving protection circuit is electrically connected between the power supply and the load and disconnects the power supply from the load according to the power supply working parameters received from the signal acquisition port.
2. The machine operating circuit of claim 1, wherein the drive protection circuit comprises a first switch, an input end and an output end of the first switch are connected between a negative power port and a load, and a control end of the first switch is connected to the signal acquisition port to control the first switch to be turned on or off.
3. The machine operating circuit of claim 2, further comprising a first power supply terminal connected to the positive power supply terminal, wherein the drive protection circuit further comprises a second switch, wherein a control terminal of the second switch is connected to the signal acquisition terminal, an input terminal of the second switch is connected to the first power supply terminal, an output terminal of the second switch is connected to the negative power supply terminal through a first resistor, and a control terminal of the first switch is connected to an output terminal of the second switch.
4. The machine operating circuit of claim 3, wherein the drive protection circuit further comprises third and fourth switches connected between the first and second switches, control terminals of the third and fourth switches being connected to the output terminal of the second switch; the input end of the third switch is connected with a first power supply end, the output end of the third switch is connected with the input end of the fourth switch, and the output end of the fourth switch is connected with the negative electrode port of the power supply; the control end of the first switch is connected between the output end of the third switch and the input end of the fourth switch.
5. The machine working circuit according to claim 4, wherein the driving protection circuit further comprises a second resistor and a third resistor, the second resistor and the third resistor are connected in series and have one end connected to the negative power port and the other end connected between the third switch and the fourth switch; and the control end of the first switch is connected between the second resistor and the third resistor.
6. The machine operating circuit according to claim 3, further comprising a low power consumption protection unit, wherein the low power consumption protection unit comprises a fifth switch and a voltage detection unit for detecting the power of the power supply, an input terminal of the fifth switch is connected to the positive terminal of the power supply, and an output terminal of the fifth switch is connected to the first power supply terminal; the voltage detection part is connected to the control end of the fifth switch to control the on-off of the fifth switch.
7. The machine-working circuit of claim 6, wherein the voltage detection unit comprises a switch module and a voltage dividing module, an output terminal of the switch module is connected to a control terminal of the fifth switch, and a control terminal of the switch module is connected to the voltage dividing module.
8. The machine-operating circuit of claim 7, wherein the voltage divider module comprises a first reference resistor connected between the control terminal of the switch module and the first power terminal, a second reference resistor connected between the control terminal of the switch module and the input terminal, a third reference resistor, and a sixth switch; the control end and the input end of the sixth switch are both connected to the positive port of the power supply, and the output end of the sixth switch is connected to the third reference resistor; the other end of the third reference resistor is connected between the first reference resistor and the second reference resistor; the third reference resistance is less than the second reference resistance, which is less than the first reference resistance.
9. The machine-operated circuit of claim 1, further comprising a second power supply terminal connected to the positive power supply port, the load being connected to the second power supply terminal; the machine working circuit further comprises a fuse, and the fuse is connected between the positive port of the power supply and the second power supply end.
10. A vacuum cleaner including a machine operating circuit according to any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920947360.0U CN210433405U (en) | 2019-06-21 | 2019-06-21 | Machine working circuit and dust collector comprising same |
| PCT/CN2019/117543 WO2020253047A1 (en) | 2019-06-21 | 2019-11-12 | Machine operation circuit, and vacuum cleaner comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920947360.0U CN210433405U (en) | 2019-06-21 | 2019-06-21 | Machine working circuit and dust collector comprising same |
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| Publication Number | Publication Date |
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| CN210433405U true CN210433405U (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920947360.0U Active CN210433405U (en) | 2019-06-21 | 2019-06-21 | Machine working circuit and dust collector comprising same |
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| CN (1) | CN210433405U (en) |
| WO (1) | WO2020253047A1 (en) |
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| US7166990B2 (en) * | 2003-05-12 | 2007-01-23 | Kare Hong Kong Limited | Battery low-voltage protecting device |
| US7402869B2 (en) * | 2004-09-29 | 2008-07-22 | Agere Systems Inc | Apparatus and method for breakdown protection of a source follower circuit |
| CN102195324B (en) * | 2011-05-18 | 2014-04-16 | 张兴发 | Battery protection chip, circuit and method |
| CN104078923B (en) * | 2013-03-28 | 2017-07-21 | 海洋王（东莞）照明科技有限公司 | Over under-voltage protection circuit and lighting device |
| CN207994604U (en) * | 2018-01-29 | 2018-10-19 | 广州视源电子科技股份有限公司 | Less voltage protector |
| CN208739094U (en) * | 2018-09-17 | 2019-04-12 | 深圳市诚芯微科技有限公司 | Trigger-type low power consumption switch circuit |
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2019
- 2019-06-21 CN CN201920947360.0U patent/CN210433405U/en active Active
- 2019-11-12 WO PCT/CN2019/117543 patent/WO2020253047A1/en active Application Filing
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| WO2020253047A1 (en) | 2020-12-24 |
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