CN107231006B - AC/DC power supply control device for AC/DC dual-purpose dust collector and dust collector - Google Patents
AC/DC power supply control device for AC/DC dual-purpose dust collector and dust collector Download PDFInfo
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- CN107231006B CN107231006B CN201610831253.2A CN201610831253A CN107231006B CN 107231006 B CN107231006 B CN 107231006B CN 201610831253 A CN201610831253 A CN 201610831253A CN 107231006 B CN107231006 B CN 107231006B
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Abstract
The invention discloses an alternating current and direct current power supply control device for an alternating current and direct current dual-purpose dust collector and the dust collector, which are used for controlling an alternating current power supply and a direct current power supply to supply power to an alternating current and direct current universal load. The invention can realize the automatic switching between alternating current and direct current and can automatically adjust the magnitude of the power supply voltage.
Description
Technical Field
The invention relates to an alternating current and direct current power supply control device for an alternating current and direct current dual-purpose dust collector and the dust collector.
Background
Some ac or dc power tools in the market at present, such as ac cleaners or dc cleaners, usually need to be provided with a long power cord, because the area to be cleaned is large, and the ac socket is limited, the user is bothered in operation; although the direct current dust collector does not need to be provided with a long power cord, the direct current dust collector is limited by the current battery capacity and can work for a relatively short time.
In addition, the following ac/dc dual-purpose machine tool can solve the above problems, such as ac/dc dust collectors or ac/dc gardening tools, but the ac/dc dual-purpose machine tool in the market at present has strict limitations on the ac voltage and the voltage of the dc battery pack, which severely limits the popularization and application of the technology.
Disclosure of Invention
The present invention is directed to an ac/dc power supply control device for an ac/dc dual-purpose vacuum cleaner and a vacuum cleaner, which can automatically switch between ac and dc and automatically adjust the power supply voltage.
In order to achieve the purpose, the invention mainly adopts the following technical scheme: an AC/DC power supply control device for AC/DC dust collector for controlling AC power supply and DC power supply to supply power to AC/DC universal load comprises AC voltage detection circuit, AC controlled circuit, DC voltage detection circuit, DC controlled circuit and control circuit,
the alternating voltage detection circuit is respectively connected with the alternating current power supply and the control circuit and is used for outputting a first detection signal to the control circuit when the alternating voltage is detected;
the direct-current voltage detection circuit is respectively connected with the direct-current power supply and the control circuit and is used for outputting a second detection signal to the control circuit when detecting the direct-current voltage;
the control circuit is further connected with the alternating current controlled circuit and the direct current controlled circuit and used for generating a first control signal or a second control signal according to the first detection signal and the second detection signal, the first control signal is output to the alternating current controlled circuit, and the second control signal is output to the direct current controlled circuit;
the alternating current controlled circuit is connected between the alternating current power supply and the alternating current and direct current universal load and is used for conducting when receiving the first control signal so that the alternating current power supply supplies power to the alternating current and direct current universal load;
and the direct current controlled circuit is connected between the direct current power supply and the alternating current and direct current universal load and is used for conducting when receiving the second control signal so that the direct current power supply supplies power to the alternating current and direct current universal load.
In addition, the invention also provides the following auxiliary technical scheme:
the alternating voltage detection circuit is also used for detecting the size of the alternating voltage and outputting the alternating voltage to the control circuit; the control circuit is also used for generating a first adjusting signal according to the magnitude of the alternating voltage and outputting the first adjusting signal to the alternating current controlled circuit; the alternating current controlled circuit is further used for converting the voltage of the alternating current power supply into a first preset voltage according to the first adjusting signal so as to supply power to the alternating current and direct current universal load.
The direct-current voltage detection circuit is also used for detecting the magnitude of the direct-current voltage and outputting the direct-current voltage to the control circuit; the control circuit is also used for generating a second regulating signal according to the magnitude of the direct-current voltage and outputting the second regulating signal to the direct-current controlled circuit; the direct current controlled circuit is further used for converting the voltage of the direct current power supply into a second preset voltage according to the second adjusting signal so as to supply power to the alternating current and direct current universal load.
The alternating current and direct current power supply control device further comprises an alternating current transformation circuit, wherein the alternating current transformation circuit is connected between the alternating current power supply and the control circuit and used for converting the voltage of the alternating current power supply into the working voltage of the control circuit.
The alternating current and direct current power supply control device further comprises a direct current voltage transformation circuit, wherein the direct current voltage transformation circuit is connected between the direct current power supply and the control circuit and used for converting the voltage of the direct current power supply into the working voltage of the control circuit.
The alternating voltage detection circuit comprises a first resistor R16 and a second resistor R17, wherein one end of the first resistor R16 is connected with a first pole of the alternating current power supply, and the other end of the first resistor R3526 is respectively connected with one end of the second resistor R17 and a first detection signal input end of the control circuit; the other end of the second resistor R17 is connected with the second pole of the alternating current power supply and is grounded.
The direct-current voltage detection circuit comprises a third resistor R14 and a fourth resistor R15, wherein one end of the third resistor R14 is connected with the first pole of the direct-current power supply, and the other end of the third resistor R3526 is respectively connected with one end of the fourth resistor R15 and a second detection signal input end of the control circuit; the other end of the fourth resistor R15 is connected to the second pole of the dc power supply and is also connected to ground.
The alternating current controlled circuit comprises a first resistor R18, a photoelectric coupler U2, a second resistor R19, a third resistor R1 and a controlled silicon BTA12, wherein one end of the first resistor R18 is connected with the first control signal output end of the control circuit, and the other end of the first resistor R18 is connected with the positive electrode of the input end of the photoelectric coupler U2; the negative electrode of the input end of the photoelectric coupler U2 is grounded, the first pole of the output end is connected with the first pole of the alternating current power supply through the second resistor R19, and the second pole of the output end is connected with the gate pole of the controlled silicon BTA12 through the third resistor R1; the first pole of the controlled silicon BTA12 is connected with the second pole of the alternating current power supply, and the second pole of the controlled silicon BTA12 is connected with the alternating current and direct current universal load.
The direct current controlled circuit comprises a first triode Q5, a second triode QB9, a resistor R2 and an MOS transistor Q2; a base of the first triode Q5 is connected to the second control signal output terminal of the control circuit and a base of the second triode QB9, respectively, a collector of the first triode Q5 is connected to a power supply positive electrode VCC, and an emitter of the first triode Q5 is connected to an emitter of the second triode QB9 and one end of the resistor, respectively; the collector of the second triode QB9 is grounded; the other end of the resistor R2 is connected with the grid electrode of the MOS tube; the source electrode of the MOS transistor Q2 is connected with the negative electrode of the direct current power supply, and the drain electrode of the MOS transistor Q2 is connected with the alternating current-direct current universal load.
Further, the present invention provides a machine tool having the ac/dc power supply control apparatus according to the above technical aspect, wherein the machine tool includes a housing and an ac/dc universal load, and the ac/dc universal load is accommodated in the housing.
Further, the invention also provides a control method of the alternating current and direct current power supply, which is used for controlling the alternating current power supply and the direct current power supply to supply power to the alternating current and direct current universal load, and the control method comprises the following steps:
detecting whether a power supply is alternating current;
if the power supply is detected to be alternating current, enabling the alternating current power supply to supply power to the alternating current/direct current universal load, and adjusting the voltage of the alternating current power supply to a first preset value suitable for the universal load; and
and if the detection power supply is direct current, enabling the direct current power supply to supply power to the alternating current and direct current universal load, and adjusting the voltage of the direct current power supply to a second preset value suitable for the universal load.
Further, the present invention also provides an ac/dc vacuum cleaner, comprising:
a housing;
an AC power supply interface;
a DC power supply interface;
a series motor housed in the housing; and
the AC/DC power supply control device is used for controlling an AC power supply accessed by an AC power supply interface and a DC power supply accessed by a DC power supply interface to supply power to the series excited motor, and comprises an AC voltage detection circuit, an AC controlled circuit, a DC voltage detection circuit, a DC controlled circuit and a control circuit,
the alternating voltage detection circuit is respectively connected with the alternating power supply interface and the control circuit and is used for outputting a first detection signal to the control circuit when the alternating voltage is detected;
the direct-current voltage detection circuit is respectively connected with the direct-current power supply interface and the control circuit and is used for outputting a second detection signal to the control circuit when detecting the direct-current voltage;
the control circuit is further connected with the alternating current controlled circuit and the direct current controlled circuit and used for generating a first control signal or a second control signal according to the first detection signal and the second detection signal, the first control signal is output to the alternating current controlled circuit, and the second control signal is output to the direct current controlled circuit;
the alternating current controlled circuit is connected between the alternating current power supply interface and the series excited motor and is used for conducting when receiving the first control signal so that an alternating current power supply accessed by the alternating current power supply interface supplies power to the series excited motor;
and the direct current controlled circuit is connected between the direct current power supply interface and the series excited motor and is used for conducting when receiving the second control signal so as to enable the direct current power supply accessed by the direct current power supply interface to supply power to the series excited motor.
As an auxiliary technical solution, the alternating voltage detection circuit is further configured to detect a magnitude of the alternating voltage and output the detected magnitude to the control circuit; the control circuit is also used for generating a first adjusting signal according to the magnitude of the alternating voltage and outputting the first adjusting signal to the alternating current controlled circuit; the alternating current controlled circuit is further used for converting the voltage of the alternating current power supply into a first preset voltage according to the first adjusting signal so as to supply power to the series motor.
As an auxiliary technical solution, the dc voltage detection circuit is further configured to detect a magnitude of the dc voltage and output the detected magnitude to the control circuit; the control circuit is also used for generating a second regulating signal according to the magnitude of the direct-current voltage and outputting the second regulating signal to the direct-current controlled circuit; and the direct current controlled circuit is also used for converting the voltage of the direct current power supply into a second preset voltage according to the second adjusting signal so as to supply power to the series motor.
Compared with the prior art, the alternating current and direct current power supply control device and the control method thereof are used for controlling the alternating current power supply and the direct current power supply to supply power to the alternating current and direct current universal load, and comprise an alternating current voltage detection circuit, an alternating current controlled circuit, a direct current voltage detection circuit, a direct current controlled circuit and a control circuit, so that the following advantages are achieved: firstly, the automatic switching between alternating current and direct current of the alternating current and direct current dual-purpose machine tool can be realized, and a user can continuously use the machine in places with or without an alternating current power supply; secondly, the voltage can be automatically adjusted, so that a user can realize seamless switching to a proper preset voltage in environments with different voltages without worrying about the problem of power supply voltage; in addition, the use of the battery pack is not required, and a user can use the existing direct current battery pack with any voltage to drive the tool machine, so that great convenience in use is provided, and the cost for buying the battery pack again is saved.
Drawings
Fig. 1 is a circuit block diagram of an ac/dc power supply control apparatus according to the present invention.
Fig. 2 is a circuit diagram of the ac voltage detection circuit of fig. 1.
Fig. 3 is a circuit diagram of the dc voltage detection circuit of fig. 1.
Fig. 4 is a circuit diagram of connections between the ac controlled circuit, the dc controlled circuit, and the general load of fig. 1.
Fig. 5 is a control flow chart of a main program of the ac/dc power supply control device in fig. 1.
Detailed Description
The present invention will be described in further non-limiting detail with reference to the following preferred embodiments and accompanying drawings.
Referring to fig. 1, the ac/dc power supply control apparatus according to the preferred embodiment of the present invention is used for controlling an ac power supply 1 and a dc power supply 3 (i.e., a battery pack) to supply power to an ac/dc universal load 5 (i.e., a motor assembly), and is suitable for an ac/dc power tool (not shown), such as an ac/dc vacuum cleaner or an ac/dc gardening tool. In general, a power tool includes a housing, an ac power source interface, a battery pack, and a universal load 5 housed in the housing, and in an ac-dc vacuum cleaner, the universal load 5 may be a series motor including a stator having a field winding and a rotor having an armature winding, the field winding and the armature winding being connected in series. The alternating current/direct current power supply control device can be applied to the alternating current/direct current dual-purpose machine tool.
In one embodiment, the alternating current and direct current power supply control device comprises an alternating current voltage detection circuit 2, an alternating current controlled circuit 4, a direct current voltage detection circuit 6, a direct current controlled circuit 8 and a control circuit 10.
Further referring to fig. 2, an ac voltage detection circuit 2 is connected to the ac power supply 1 and the control circuit 10, respectively, for detecting the magnitude of the ac voltage and outputting a first detection signal to the control circuit 10 when the ac voltage is detected. The alternating voltage detection circuit 2 comprises a first resistor R16 and a second resistor R17, wherein one end of the first resistor R16 is connected with the first pole L of the alternating current power supply 1, and the other end of the first resistor R16 is respectively connected with one end of the second resistor R17 and a first detection signal input end P1 of the control circuit 10; the other end of the second resistor R17 is connected to the second pole N of the ac power supply 1 and is also grounded.
The alternating current controlled circuit 4 is connected between an alternating current power supply 1 and an alternating current/direct current universal load 5, and is used for conducting when receiving the first control signal, so that the alternating current power supply 1 supplies power to the alternating current/direct current universal load 5. Specifically, as shown in fig. 4, the ac controlled circuit 4 includes a first resistor R18, a photocoupler U2, a second resistor R19, a third resistor R1 and a thyristor BTA12, wherein one end of the first resistor R18 is connected to the first control signal output terminal P3 of the control circuit 10, and the other end is connected to the positive terminal of the input terminal of the photocoupler U2; the negative electrode of the input end of the photoelectric coupler U2 is grounded, the first pole of the output end is connected with the first pole L of the alternating current power supply 1 through the second resistor R19, and the second pole of the output end is connected with the gate pole of the controlled silicon BTA12 through the third resistor R1; the first pole of the controlled silicon BTA12 is connected with the second pole N of the alternating current power supply 1, and the second pole of the controlled silicon BTA12 is connected with the alternating current/direct current universal load 5. Further, the second pole of the thyristor BTA12 is connected to one end of the power input terminal of the ac/dc universal load 5, and the other end of the power input terminal of the ac/dc universal load 5 is connected to the first pole L of the ac power supply 13.
Referring to fig. 3, the dc voltage detection circuit 6 is respectively connected to the dc power supply 3 and the control circuit 10, and is configured to detect a magnitude of the dc voltage and output a second detection signal to the control circuit 10 when the dc voltage is detected. Specifically, the dc voltage detection circuit 6 includes a third resistor R14 and a fourth resistor R15, wherein one end of the third resistor R14 is connected to the positive electrode of the dc power supply 3, and the other end is connected to one end of the fourth resistor R15 and the second detection signal input terminal P2 of the control circuit 10; the other end of the fourth resistor R15 is connected to the negative electrode of the dc power supply 3 and is also grounded.
The direct current controlled circuit 8 is connected between the direct current power supply 3 and the alternating current/direct current universal load 5, and is used for conducting when receiving the second control signal, so that the direct current power supply 3 supplies power to the alternating current/direct current universal load 5. Specifically, as shown in fig. 4, the dc controlled circuit 8 includes a first transistor Q5, a second transistor QB9, a resistor R2, and a MOS transistor Q2; a base of the first transistor Q5 is connected to the second adjusting signal output terminal P4 of the control circuit 10 and a base of the second transistor QB9, respectively, a collector of the first transistor Q5 is connected to a power supply positive electrode VCC, and an emitter of the first transistor Q5 is connected to an emitter of the second transistor QB9 and one end of the resistor R2, respectively; the collector of the second triode QB9 is grounded; the other end of the resistor R2 is connected with the gate of the MOS transistor Q2; the source electrode of the MOS transistor Q2 is connected with the negative electrode of the direct current power supply 3, and the drain electrode of the MOS transistor Q2 is connected with the alternating current/direct current universal load 5. Further, the drain of the MOS transistor Q2 is connected to one end of the power input end of the ac/dc universal load 5, and the other end of the power input end of the ac/dc universal load 5 is connected to the anode of the dc power supply 3.
The control circuit 10 is further connected to the ac controlled circuit 4 and the dc controlled circuit 8, respectively, and configured to generate a first control signal or a second control signal according to the first detection signal and the second detection signal, where the first control signal is output to the ac controlled circuit 4, and the second control signal is output to the dc controlled circuit 8. As a preferred embodiment, the first control signal is generated when the control circuit 10 receives only the first detection signal or receives the first detection signal and the second detection signal at the same time; when the control circuit 10 receives only the second detection signal, the second control signal is generated; when the control circuit does not receive the first detection signal or the second detection signal, the control circuit does not generate the first control signal or the second control signal.
Further, on the one hand, the control circuit 10 also detects the alternating voltage by the alternating voltage detection circuit 2 and generates a first adjustment signal according to the magnitude of the alternating voltage, and outputs the first adjustment signal to the alternating current controlled circuit 4; then the alternating current controlled circuit 4 converts the voltage of the alternating current power supply 1 into a first preset voltage according to the first adjusting signal so as to supply power to the alternating current-direct current universal load 5; on the other hand, the control circuit 10 also detects the dc voltage through the dc voltage detection circuit 6, generates a second adjustment signal according to the magnitude of the dc voltage, and outputs the second adjustment signal to the dc controlled circuit 8; and then the direct current controlled circuit 8 converts the voltage of the direct current power supply 3 into a second preset voltage according to the second adjusting signal so as to supply power to the alternating current and direct current universal load 5. For those skilled in the art, the control circuit 10 is designed conventionally in the art, and therefore, the detailed circuit structure thereof is omitted.
The alternating current and direct current power supply control device further comprises an alternating current transformation circuit 7 and a direct current transformation circuit 9. The alternating current transformation circuit 7 is connected between the alternating current power supply 1 and the control circuit 10, and is configured to transform a voltage of the alternating current power supply 1 into a working voltage of the control circuit 10, wherein an output end (not shown) of the alternating current transformation circuit 7 after transformation is connected to an input end (not shown) of the control circuit 10. The dc transformer circuit 9 is connected between the dc power supply 3 and the control circuit 10, and is configured to convert a voltage of the dc power supply 3 into a working voltage of the control circuit 10, wherein an output end (not shown) of the dc transformer circuit 9 after transformation is also connected to an input end of the control circuit 10. It can be seen that, for those skilled in the art, the above-mentioned ac and dc transforming circuits 7 and 9 can be realized by conventional design in the prior art, and therefore, the detailed circuit configuration thereof is omitted here.
In another embodiment, the present invention further provides a power tool having the ac/dc power supply control apparatus according to the above technical solution, the power tool including a housing and a universal ac/dc load, the universal ac/dc load being accommodated in the housing.
In another embodiment, the present invention further provides an ac/dc vacuum cleaner, including: the device comprises a shell, an alternating current power supply interface, a direct current power supply interface, a series motor and an alternating current and direct current power supply control device, wherein the series motor is accommodated in the shell. Wherein the series-wound machine comprises a stator having a field winding and a rotor having an armature winding, the field winding and the armature winding being connected in series.
And the alternating current and direct current power supply control device is used for controlling an alternating current power supply accessed by an alternating current power supply interface and a direct current power supply accessed by a direct current power supply interface to supply power to the series excited motor. Specifically, the alternating current and direct current power supply control device comprises an alternating current voltage detection circuit, an alternating current controlled circuit, a direct current voltage detection circuit, a direct current controlled circuit and a control circuit.
The alternating voltage detection circuit is respectively connected with the alternating power supply interface and the control circuit and is used for outputting a first detection signal to the control circuit when the alternating voltage is detected.
The direct-current voltage detection circuit is respectively connected with the direct-current power supply interface and the control circuit and is used for outputting a second detection signal to the control circuit when detecting the direct-current voltage.
The control circuit is further connected with the alternating current controlled circuit and the direct current controlled circuit and used for generating a first control signal or a second control signal according to the first detection signal and the second detection signal, the first control signal is output to the alternating current controlled circuit, and the second control signal is output to the direct current controlled circuit.
The alternating current controlled circuit is connected between the alternating current power supply interface and the series motor and is used for being conducted when the first control signal is received, so that the alternating current power supply accessed by the alternating current power supply interface supplies power to the series motor.
And the direct current controlled circuit is connected between the direct current power supply interface and the series excited motor and is used for conducting when receiving the second control signal so as to enable the direct current power supply accessed by the direct current power supply interface to supply power to the series excited motor.
The alternating voltage detection circuit is also used for detecting the magnitude of the alternating voltage and outputting the magnitude to the control circuit; the control circuit is also used for generating a first adjusting signal according to the magnitude of the alternating voltage and outputting the first adjusting signal to the alternating current controlled circuit; the alternating current controlled circuit is further used for converting the voltage of the alternating current power supply into a first preset voltage according to the first adjusting signal so as to supply power to the alternating current and direct current universal load.
The direct-current voltage detection circuit is further used for detecting the magnitude of the direct-current voltage and outputting the direct-current voltage to the control circuit; the control circuit is also used for generating a second regulating signal according to the magnitude of the direct-current voltage and outputting the second regulating signal to the direct-current controlled circuit; the direct current controlled circuit is further used for converting the voltage of the direct current power supply into a second preset voltage according to the second adjusting signal so as to supply power to the alternating current and direct current universal load.
In another embodiment, the present invention further provides a method for controlling an ac/dc power supply, which is used to control the ac power supply and the dc power supply to supply power to an ac/dc universal load, and the method includes the following steps: detecting whether a power supply is alternating current; if the power supply is detected to be alternating current, enabling the alternating current power supply to supply power to the alternating current/direct current universal load, and adjusting the voltage of the alternating current power supply to a first preset value suitable for the universal load; and if the power supply is detected to be direct current, enabling the direct current power supply to supply power to the alternating current and direct current universal load, and adjusting the voltage of the direct current power supply to a second preset value suitable for the universal load. Specifically, referring to fig. 5, there is shown a control flow chart of a main program of the ac/dc power supply control device according to the present invention, and the control method thereof is substantially as follows: when the alternating current and direct current dual-purpose machine tool is used, an alternating current power supply 1 powers on a machine through an alternating current transformation circuit 7 or a direct current power supply 3 through a direct current transformation circuit 9, the machine enters a main program after being initialized, then a control circuit 10 judges whether the machine tool is alternating current or not according to the fact that a first detection signal sent by an alternating current voltage detection circuit 2 or a second detection signal sent by a direct current voltage detection circuit 6 is received, if the machine tool is alternating current, the control circuit 10 sends a first control signal and a first adjusting signal to an alternating current controlled circuit 4 and sends a second control signal to a direct current controlled circuit 8, wherein the first control signal conducts a silicon controlled BTA12 of the alternating current controlled circuit 4; the first adjusting signal is sent by an alternating voltage frequency detection subprogram set by the control circuit 10 and automatically controls the chopping proportion of the controlled silicon BTA12, and the voltage passing through the universal load 5 is adjusted to a first preset voltage; the second control signal causes the dc controlled circuit 8 to turn off the MOS transistor Q2; if the power supply is not alternating current, the control circuit 10 also sends another first control signal to the alternating current controlled circuit 4, and sends another second control signal and another second adjusting signal to the direct current controlled circuit 8, the first control signal enables the alternating current controlled circuit 4 to close the silicon controlled rectifier BTA12, and the direct current controlled circuit 8 turns on the MOS transistor Q2 according to the second control signal; the second adjustment signal is sent by the dc voltage detection subroutine set by the control circuit 10 and automatically adjusts the on-ratio of the MOS transistor Q2, so that the voltage across the universal load 5 is adjusted to a second preset voltage.
In summary, the ac/dc power control apparatus and the control method thereof provided by the present invention have at least the following advantages: firstly, the automatic switching between alternating current and direct current of the alternating current and direct current dual-purpose machine tool can be realized, and a user can continuously use the machine in places with or without an alternating current power supply; secondly, the voltage can be automatically adjusted, so that a user can realize seamless switching to a proper preset voltage in environments with different voltages without worrying about the problem of power supply voltage; in addition, the use of the battery pack is not required, and a user can use the existing direct current battery pack with any voltage to drive the tool machine, so that great convenience in use is provided, and the cost for buying the battery pack again is saved.
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts 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 according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. The utility model provides an alternating current and direct current power supply controlling means for alternating current and direct current dual-purpose dust catcher for control alternating current power supply and direct current power supply for the general load power supply of alternating current and direct current, its characterized in that: the AC/DC power supply control device comprises an AC voltage detection circuit, an AC controlled circuit, a DC voltage detection circuit, a DC controlled circuit and a control circuit,
the alternating voltage detection circuit is respectively connected with the alternating current power supply and the control circuit and is used for outputting a first detection signal to the control circuit when the alternating voltage is detected; the alternating voltage detection circuit is also used for detecting the size of the alternating voltage and outputting the alternating voltage to the control circuit;
the direct-current voltage detection circuit is respectively connected with the direct-current power supply and the control circuit and is used for outputting a second detection signal to the control circuit when detecting the direct-current voltage; the direct-current voltage detection circuit is also used for detecting the magnitude of the direct-current voltage and outputting the direct-current voltage to the control circuit;
the control circuit is further connected with the alternating current controlled circuit and the direct current controlled circuit and used for generating a first control signal or a second control signal according to the first detection signal and the second detection signal, the first control signal is output to the alternating current controlled circuit, the second control signal is output to the direct current controlled circuit, and when the control circuit receives only the first detection signal or simultaneously receives the first detection signal and the second detection signal, the first control signal is generated; generating the second control signal when the control circuit receives only the second detection signal; when the control circuit does not receive the first detection signal or the second detection signal, the control circuit does not generate the first control signal or the second control signal; the control circuit is also used for generating a first adjusting signal according to the magnitude of the alternating voltage and outputting the first adjusting signal to the alternating current controlled circuit; the control circuit is also used for generating a second regulating signal according to the magnitude of the direct-current voltage and outputting the second regulating signal to the direct-current controlled circuit;
the alternating current controlled circuit is connected between the alternating current power supply and the alternating current and direct current universal load and is used for conducting when receiving the first control signal so that the alternating current power supply supplies power to the alternating current and direct current universal load; the alternating current controlled circuit is also used for converting the voltage of the alternating current power supply into a first preset voltage according to the first adjusting signal so as to supply power to the alternating current and direct current universal load;
the direct-current controlled circuit is connected between the direct-current power supply and the alternating-current and direct-current universal load and is used for conducting when receiving the second control signal so that the direct-current power supply supplies power to the alternating-current and direct-current universal load; the direct current controlled circuit is further used for converting the voltage of the direct current power supply into a second preset voltage according to the second adjusting signal so as to supply power to the alternating current and direct current universal load.
2. The ac/dc power supply control device according to claim 1, wherein: the alternating current and direct current power supply control device further comprises an alternating current transformation circuit, wherein the alternating current transformation circuit is connected between the alternating current power supply and the control circuit and used for converting the voltage of the alternating current power supply into the working voltage of the control circuit.
3. The ac/dc power supply control device according to claim 2, wherein: the alternating current and direct current power supply control device further comprises a direct current voltage transformation circuit, wherein the direct current voltage transformation circuit is connected between the direct current power supply and the control circuit and used for converting the voltage of the direct current power supply into the working voltage of the control circuit.
4. An ac/dc power supply control apparatus according to claim 3, wherein: the alternating voltage detection circuit comprises a first resistor R16 and a second resistor R17, wherein,
one end of the first resistor R16 is connected with the first pole of the alternating current power supply, and the other end of the first resistor R16 is respectively connected with one end of the second resistor R17 and the first detection signal input end of the control circuit;
the other end of the second resistor R17 is connected with the second pole of the alternating current power supply and is grounded.
5. An ac/dc power supply control apparatus according to claim 3, wherein: the direct current voltage detection circuit comprises a third resistor R14 and a fourth resistor R15, wherein,
one end of the third resistor R14 is connected with the first pole of the DC power supply, and the other end of the third resistor R14 is respectively connected with one end of the fourth resistor R15 and the second detection signal input end of the control circuit;
the other end of the fourth resistor R15 is connected to the second pole of the dc power supply and is also connected to ground.
6. An ac/dc power supply control apparatus according to claim 3, wherein: the alternating current controlled circuit comprises a first resistor R18, a photoelectric coupler U2, a second resistor R19, a third resistor R1 and a controlled silicon BTA12, wherein,
one end of the first resistor R18 is connected with the first control signal output end of the control circuit, and the other end of the first resistor R18 is connected with the positive electrode of the input end of the photoelectric coupler U2;
the negative electrode of the input end of the photoelectric coupler U2 is grounded, the first pole of the output end is connected with the first pole of the alternating current power supply through the second resistor R19, and the second pole of the output end is connected with the gate pole of the controlled silicon BTA12 through the third resistor R1;
the first pole of the controlled silicon BTA12 is connected with the second pole of the alternating current power supply, and the second pole of the controlled silicon BTA12 is connected with the alternating current and direct current universal load.
7. An ac/dc power supply control apparatus according to claim 3, wherein: the direct current controlled circuit comprises a first triode Q5, a second triode QB9, a resistor R2 and an MOS transistor Q2; wherein
A base of the first triode Q5 is connected to the second control signal output terminal of the control circuit and a base of the second triode QB9, respectively, a collector of the first triode Q5 is connected to a power supply positive electrode VCC, and an emitter of the first triode Q5 is connected to an emitter of the second triode QB9 and one end of the resistor R2, respectively;
the collector of the second triode QB9 is grounded;
the other end of the resistor R2 is connected with the gate of the MOS transistor Q2;
the source electrode of the MOS transistor Q2 is connected with the negative electrode of the direct current power supply, and the drain electrode of the MOS transistor Q2 is connected with the alternating current-direct current universal load.
8. An AC/DC vacuum cleaner, comprising:
a housing;
an AC power supply interface;
a DC power supply interface;
a series motor housed in the housing; and
the alternating current-direct current power supply control device is used for controlling an alternating current power supply accessed by the alternating current power supply interface and a direct current power supply accessed by the direct current power supply interface to supply power to the series excited motor;
the method is characterized in that:
the AC/DC power supply control device comprises an AC voltage detection circuit, an AC controlled circuit, a DC voltage detection circuit, a DC controlled circuit and a control circuit,
the alternating voltage detection circuit is respectively connected with the alternating power supply interface and the control circuit and is used for outputting a first detection signal to the control circuit when the alternating voltage is detected; the alternating voltage detection circuit is also used for detecting the size of the alternating voltage and outputting the alternating voltage to the control circuit;
the direct-current voltage detection circuit is respectively connected with the direct-current power supply interface and the control circuit and is used for outputting a second detection signal to the control circuit when detecting the direct-current voltage; the direct-current voltage detection circuit is also used for detecting the magnitude of the direct-current voltage and outputting the direct-current voltage to the control circuit;
the control circuit is further connected with the alternating current controlled circuit and the direct current controlled circuit and used for generating a first control signal or a second control signal according to the first detection signal and the second detection signal, the first control signal is output to the alternating current controlled circuit, the second control signal is output to the direct current controlled circuit, and when the control circuit does not receive the first detection signal or the second detection signal, the first control signal or the second control signal is not generated; the control circuit is also used for generating a first adjusting signal according to the magnitude of the alternating voltage and outputting the first adjusting signal to the alternating current controlled circuit; the control circuit is also used for generating a second regulating signal according to the magnitude of the direct-current voltage and outputting the second regulating signal to the direct-current controlled circuit;
the alternating current controlled circuit is connected between the alternating current power supply interface and the series excited motor and is used for conducting when receiving the first control signal so that an alternating current power supply accessed by the alternating current power supply interface supplies power to the series excited motor; the alternating current controlled circuit is also used for converting the voltage of the alternating current power supply into a first preset voltage according to the first adjusting signal so as to supply power to the series excited motor;
the direct-current controlled circuit is connected between the direct-current power supply interface and the series excited motor and is used for conducting when receiving the second control signal so that a direct-current power supply accessed by the direct-current power supply interface supplies power to the series excited motor; and the direct current controlled circuit is also used for converting the voltage of the direct current power supply into a second preset voltage according to the second adjusting signal so as to supply power to the series motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/100096 WO2018041242A1 (en) | 2016-08-31 | 2017-08-31 | Vacuum cleaner |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016107837105 | 2016-08-31 | ||
| CN201610783710 | 2016-08-31 |
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| CN107231006B true CN107231006B (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610831253.2A Active CN107231006B (en) | 2016-08-31 | 2016-09-19 | AC/DC power supply control device for AC/DC dual-purpose dust collector and dust collector |
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| CN108169640A (en) * | 2017-12-29 | 2018-06-15 | 中国电力科学研究院有限公司 | One kind is based on gas isolated combined high-voltage generating means and method |
| CN110607613B (en) * | 2019-10-23 | 2021-12-24 | 浙江众邦机电科技有限公司 | Power-off system and method of sewing machine electric control system |
| CN114633640B (en) * | 2022-01-17 | 2023-09-26 | 中车青岛四方机车车辆股份有限公司 | Power switching system and method of railway vehicle and railway vehicle |
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| CN201131241Y (en) * | 2007-12-12 | 2008-10-15 | 广东金莱特电器股份有限公司 | Charged alternating-current/direct-current moveable mosquito eradication lamp |
| CN201490962U (en) * | 2009-06-17 | 2010-05-26 | 苏州市华隆电器有限责任公司 | Signal sampling device used for controlling power of controlled silicon of alternating-current motor |
| CN103730946B (en) * | 2012-10-12 | 2016-04-06 | 台达电子工业股份有限公司 | Have and exchange and the server cooling system of direct current supply and method of operation thereof |
| CN103346678B (en) * | 2013-07-11 | 2015-09-23 | 广州金升阳科技有限公司 | A kind of auxiliary switch pipe isolated drive circuit of active clamp circuit of reversed excitation |
| CN105338871B (en) * | 2013-08-21 | 2017-10-24 | 松下知识产权经营株式会社 | Electric dust collector |
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