CN108933585B - Activation circuit and dust collector - Google Patents
Activation circuit and dust collector Download PDFInfo
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- CN108933585B CN108933585B CN201810731058.1A CN201810731058A CN108933585B CN 108933585 B CN108933585 B CN 108933585B CN 201810731058 A CN201810731058 A CN 201810731058A CN 108933585 B CN108933585 B CN 108933585B
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- circuit
- gating
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- switch
- self
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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
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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
- A47L9/2868—Arrangements for power supply of vacuum cleaners or the accessories thereof
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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
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
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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
- H03K2017/226—Modifications for ensuring a predetermined initial state when the supply voltage has been applied in bipolar transistor switches
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0036—Means reducing energy consumption
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0081—Power supply means, e.g. to the switch driver
Abstract
The embodiment of the invention provides an activation circuit and a dust collector. The activation circuit provided by the embodiment of the invention comprises: a gating circuit, a self-locking circuit and an automatic reset switch circuit. By combining the specific connection relationship among the three, when a switch in the automatic reset switch circuit is pressed down, an activation signal can be provided for the gating circuit, the gating circuit is gated to enable the battery to supply power to the host circuit to be activated, the host circuit to be activated outputs a holding signal to the self-locking circuit in the power supply state, and the self-locking circuit enables the gating circuit to be kept in the gating state under the triggering of the holding signal, so that the battery can continuously supply power to the host circuit when the host circuit works; in addition, because the automatic reset switch circuit can automatically reset after the switch is pressed, when the host circuit stops working, even if the switch of the reset circuit is not released and the self-locking circuit fails, the gating circuit can automatically switch from the gating state to the non-gating state and does not supply power to the activation circuit any more, the energy consumption can be saved, and the battery starvation can be avoided as much as possible.
Description
Technical Field
The invention relates to the technical field of battery management, in particular to an activation circuit and a dust collector.
Background
With the development of battery technology, batteries gradually have strong power storage capacity, and therefore, the batteries are widely applied to mobile terminals, intelligent robots, electric vehicles and other equipment which need long-term power supply, so as to ensure long-term endurance.
In a vacuum cleaner powered by a battery, an activation circuit is arranged between the battery and a host machine. The activation circuit comprises a start key, a user presses the start key, the key is locked by the key lock catch, and the battery is communicated with the host and can continuously supply power to the host when the key is locked, so that the host can normally run. When the host does not need to work, the key lock catch is released to enable the starting key to bounce, and the host can be closed.
In practical applications, in case of abnormal automatic shutdown of the host, the user may forget to release the key lock. In this case, if the Battery does not include a Battery Management System (BMS) or the BMS fails, the Battery will always supply power to the activation circuit, which not only wastes energy, but also exhausts the Battery power and finally "starves".
Disclosure of Invention
Various aspects of the present invention provide an activation circuit and a dust collector, so as to avoid the problem that a battery always supplies power to the activation circuit when a host is powered off, thereby not only saving energy consumption, but also avoiding the battery from being starved due to power exhaustion as much as possible.
An embodiment of the present invention provides an activation circuit, including: the automatic reset circuit comprises a gating circuit, a self-locking circuit and an automatic reset switch circuit;
the gating circuit comprises a power supply input end, a gating end and a power supply output end; the power supply input end of the gating circuit is connected with the anode of the battery, the power supply output end of the gating circuit is connected with the power supply end of the host circuit to be activated, and the gating end of the gating circuit is respectively connected with one end of the self-locking circuit and one end of the automatic reset switch circuit; the other end of the automatic reset switch circuit is connected with the ground, and the other end of the self-locking circuit is connected with the host circuit to be activated;
wherein the automatic reset switch circuit is automatically reset after a switch thereof is pressed to provide an activation signal to the gate circuit; the gating circuit is gated by the activation signal so that the battery supplies power to the host circuit to be activated, the host circuit to be activated outputs a holding signal to the self-locking circuit in a power supply state, and the self-locking circuit and the gating circuit form a current loop under the triggering of the holding signal so that the gating circuit keeps a gating state.
An embodiment of the present invention further provides a vacuum cleaner, including: battery, above-mentioned activation circuit and host computer circuit.
The activation circuit provided by the embodiment of the invention comprises: a gating circuit, a self-locking circuit and an automatic reset switch circuit. In combination with a specific connection relation among the gating circuit, the self-locking circuit and the automatic reset switch circuit, when a switch in the automatic reset switch circuit is pressed down, an activation signal can be provided for the gating circuit, the gating circuit is gated by the activation signal to enable the battery to supply power to the host circuit to be activated, the host circuit to be activated outputs a holding signal to the self-locking circuit in a power supply state, the self-locking circuit and the gating circuit form a current loop under the triggering of the holding signal to enable the gating circuit to be kept in the gating state, and therefore the battery can continuously supply power to the host circuit when the host circuit works; in addition, because the automatic reset switch circuit can automatically reset after the switch is pressed, when the host circuit stops working, the self-locking circuit fails, the gating circuit can automatically switch from the gating state to the non-gating state, the power supply for the activation circuit is not provided any more, the energy consumption can be saved, and the battery starvation can be avoided as much as possible.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of an activation circuit according to an exemplary embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating the circuit operation of an activation circuit according to an exemplary embodiment of the present invention;
fig. 3 is a schematic structural diagram of a vacuum cleaner according to an exemplary embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides an activation circuit, aiming at solving the problem that energy waste is caused by the fact that a battery supplies power for the activation circuit all the time when a host in the conventional activation circuit is shut down. The activation circuit includes a gating circuit, a self-locking circuit, and an automatic reset switch circuit. The gating circuit comprises a power supply input end, a gating end and a power supply output end; the power input end of the gating circuit is connected with the anode of the battery, the power output end of the gating circuit is connected with the power supply end of the host circuit to be activated, and the gating end is respectively connected with one end of the self-locking circuit and one end of the automatic reset switch circuit; the other end of the automatic reset switch circuit is connected with the ground, and the other end of the self-locking circuit is connected with the host circuit to be activated.
For the above-mentioned activation circuit, the automatic reset switch circuit may be automatically reset after its switch is pressed to provide the activation signal to the gate circuit; the gating circuit is gated by the activation signal so that the battery supplies power to the host circuit to be activated, the host circuit to be activated outputs a holding signal to the self-locking circuit in the power supply state, and the self-locking circuit and the gating circuit form a current loop under the triggering of the holding signal so that the gating circuit keeps the gating state and the battery can always supply power to the host circuit to be activated.
The activation circuit provided by the embodiment of the invention comprises: a gating circuit, a self-locking circuit and an automatic reset switch circuit. In combination with a specific connection relation among the gating circuit, the self-locking circuit and the automatic reset switch circuit, when a switch in the automatic reset switch circuit is pressed down, an activation signal can be provided for the gating circuit, the gating circuit is gated by the activation signal to enable the battery to supply power to the host circuit to be activated, the host circuit to be activated outputs a holding signal to the self-locking circuit in a power supply state, the self-locking circuit and the gating circuit form a current loop under the triggering of the holding signal to enable the gating circuit to be kept in the gating state, and therefore the battery can continuously supply power to the host circuit when the host circuit works; in addition, because the automatic reset switch circuit can automatically reset after the switch is pressed, when the host circuit stops working, the self-locking circuit fails, the gating circuit can automatically switch from the gating state to the non-gating state, the power supply for the activation circuit is not provided any more, the energy consumption can be saved, and the battery starvation can be avoided as much as possible.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
It should be noted that: like reference numerals refer to like objects in the following figures and embodiments, and thus, once an object is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 is a schematic structural diagram of an activation circuit according to an exemplary embodiment of the present invention. As shown in fig. 1, the activation circuit 10 includes: a gating circuit 101, a self-locking circuit 102 and an automatic reset switch circuit 103. The gating circuit 101 comprises a power input end A1, a gating end A2 and a power output end A3; the power input end A1 of the gating circuit 101 is connected with the positive pole B + of the battery 11, the power output end A3 of the gating circuit is connected with the power supply end A4 of the host circuit 12 to be activated, and the gating end A2 is respectively connected with one end of the self-locking circuit 102 and one end of the automatic reset switch circuit 103; the other end of the automatic reset switch 103 circuit is connected with the ground, and the other end of the self-locking circuit 102 is connected with the host circuit 12 to be activated.
Based on the activation circuit 10 shown in fig. 1, the automatic reset switch circuit 103 can be automatically reset after its switch is pressed to supply an activation signal to the gate circuit 101; the gating circuit 101 is gated by the activation signal to enable the battery 11 to supply power to the host circuit 12 to be activated, the host circuit 12 to be activated outputs a holding signal to the self-locking circuit 102 in the power supply state, and the self-locking circuit 102 forms a current loop with the gating circuit 101 under the triggering of the holding signal to enable the gating circuit 101 to maintain the gating state, so that the battery 12 can always supply power to the host circuit 12 to be activated. Further, since the automatic reset switch circuit 103 automatically resets after the activation circuit is supplied to the gate circuit 101, the battery 11 does not supply power to the activation circuit 10 any more when the host stops operating.
The activation circuit provided by the embodiment comprises: a gating circuit, a self-locking circuit and an automatic reset switch circuit. In combination with a specific connection relation among the gating circuit, the self-locking circuit and the automatic reset switch circuit, when a switch in the automatic reset switch circuit is pressed down, an activation signal can be provided for the gating circuit, the gating circuit is gated by the activation signal, so that the battery can supply power to the host circuit to be activated, the host circuit to be activated outputs a holding signal to the self-locking circuit in a power supply state, the self-locking circuit and the gating circuit form a current loop under the triggering of the holding signal, the gating circuit can be kept in a gating state, and therefore the battery can continuously supply power to the host circuit when the host circuit works; in addition, because the automatic reset switch circuit can automatically reset after the switch is pressed, when the host circuit stops working, the self-locking circuit fails, the gating circuit can automatically switch from the gating state to the non-gating state, the power supply for the activation circuit is not provided any more, the energy consumption can be saved, and the battery starvation can be avoided as much as possible.
Fig. 2 is a schematic diagram illustrating an operating principle of an activation circuit according to an exemplary embodiment of the present invention. As shown in fig. 2, the automatic reset switch circuit 103 includes an RC parallel circuit and a switch K1, the RC parallel circuit and the switch K1 are connected in series to form a series circuit, and the series circuit is connected between the gate terminal A2 of the gate circuit 101 and the ground. Wherein, the RC parallel circuit is formed by connecting a resistor R4 and a capacitor C1 in parallel. The switch K1 can be an automatic reset switch and also can be a self-locking switch. Optionally, the resistor R4 is a resistor with a resistance of M Ω.
For the automatic reset switch circuit 103, when the switch K1 is turned on, the capacitor C1 is turned on instantaneously to generate an activation signal, so as to provide a base current for the PNP transistor in the gate circuit 101, thereby activating the gate circuit 101. After the gating circuit 101 is activated, the battery 11 charges the capacitor C1, and the capacitor C1 is in an open circuit state; and because the resistance value of the resistor R4 is very large, the open circuit state is also similar. Therefore, for the automatic reset switch circuit, no matter the switch K1 is an automatic reset switch or a self-locking switch, after the power-on circuit 101 is activated, the RC parallel circuit can make the automatic activation switch circuit 103 in an open state, that is, the automatic activation switch circuit 103 is reset.
Alternatively, as shown in fig. 2, the series circuit formed by connecting the RC parallel circuit in series with the switch K1 may be connected to the gate terminal A2 of the gate circuit 101 by connecting a resistor R5 in series.
Alternatively, the RC parallel circuit and K1 may be located relative to each other as shown in fig. 2, one end of the switch K1 is grounded, and the other end thereof is connected to the RC parallel circuit. Or, the relative positions are: one end of the RC parallel loop is grounded, and the other end of the RC parallel loop is connected with the switch K1.
Optionally, a switch in the automatic reset switch circuit 103 is an automatic reset switch, and one end of the automatic reset switch is connected in series with a resistor and then connected with the gating end A2 of the gating circuit; the other end of the automatic reset switch is connected with the ground. Such an automatic reset switch circuit is not shown in the drawings of the present invention. For the automatic reset switch circuit 103, when the automatic reset switch K1 is turned on, an activation signal is generated to provide a base current for the PNP transistor in the gate circuit 101, thereby activating the gate circuit 101. After the gating circuit 101 is activated, the automatic reset switch K1 is automatically turned off, i.e., automatically reset, so that the automatic reset switch circuit 103 is in an open state, i.e., the automatic activation switch circuit 103 is reset.
In an alternative embodiment, as shown in fig. 1 and 2, the activation circuit further includes a switch detection circuit 104. Further, as shown in fig. 2, the switch detection circuit 104 may include: a diode D1; the cathode of the diode D1 is connected to one end of the automatic reset switch circuit 103, which is far from the ground, of the switch K1, and for the automatic reset switch circuit shown in fig. 2, the cathode of the diode D1 is connected to the series connection point of the RC parallel circuit and the switch K1; the anode of the diode D1 is connected to the power output terminal A3 of the gate circuit 101 and the switch detection port A6 of the host circuit 12 to be activated, and a resistor R9 and a resistor R10 are connected in series between the anode of the diode D1 and the power output terminal A3 of the gate circuit 101 and the switch detection port A6 of the host circuit 12 to be activated.
The switch detection circuit 104 is used to detect whether the switch K1 is pressed. The specific working principle is as follows: when the switch K1 is turned off, the diode D1 is not turned on, and the port A6 of the switch detection port A6 of the host circuit 12 to be activated is pulled up to a high level under the action of the pull-up resistor R9; when the switch K1 is closed, the cathode of the diode D1 is grounded, and the diode D1 is turned on, so that the level of the switch detection port A6 of the host circuit 12 to be activated becomes a low level. Therefore, by detecting a change in the level of the switch detection port A6 of the host circuit 12 to be activated, it is possible to detect whether the switch K1 is closed. And when the host circuit 12 to be activated detects that K1 is closed, a self-locking signal is output to the self-locking circuit 102, so that the self-locking circuit 102 works in a self-locking state. Alternatively, the latch signal may be a high level "1". The operation of the self-locking circuit 102 will be described below.
In another alternative embodiment, as shown in fig. 2, the gating circuit 101 includes a first PNP triode Q1 and a second PNP triode Q2 connected in series; wherein, the emitter of the first PNP triode Q1 is connected to the positive electrode B + of the battery 11 as the power input terminal A1, and the collector of the first PNP triode Q1 is connected to the power supply terminal (not shown in fig. 2, i.e., A4 shown in fig. 1) of the host circuit to be activated as the power output terminal A3; optionally, the collector of the first PNP triode Q1 is connected to the power supply terminal of the host circuit 12 to be activated through a resistor R1. Two resistors R2 and R3 are connected in series between the emitting electrode of the second PNP triode Q2 and the positive electrode B + of the battery 11, and the base electrode of the first PNP triode Q1 is connected with the series connection point of the two resistors R2 and R3; the base of the second PNP triode Q2 is connected to the self-locking circuit 102 and the automatic reset switch circuit 103, and the emitter of the second PNP triode Q2 is grounded.
In order to more clearly describe the operation principle of the gating circuit 101, an exemplary description is given in conjunction with the circuit operation principle diagram shown in fig. 2. As shown in fig. 2, when the switch K1 is turned on, the capacitor C1 turns on the automatic reset switch circuit 103, so that the base of the second PNP transistor Q2 is connected to the ground through the resistor R5, the capacitor C1 and the switch K1, and the emitter of the second PNP transistor Q2 is connected to the positive electrode of the battery 11 through the resistors R2 and R3, therefore, the voltage between the emitter and the base of the second PNP transistor Q2 is greater than the conduction voltage of the second PNP transistor Q2, and the second PNP transistor Q2 is turned on. When the second PNP triode Q2 is turned on, the collector of the second PNP triode Q2 is grounded, so that the base of the first PNP triode Q1 connected to the second PNP triode Q2 is grounded through the resistor R3; and the emitting electrode of the first PNP triode Q1 is connected to the positive electrode of the battery 11, and further, the voltage between the emitting electrode and the base electrode of the first PNP triode Q1 is greater than the conduction voltage of the first PNP triode Q1, and the first PNP triode Q1 is conducted. Since the first PNP transistor Q1 and the second PNP transistor Q2 are both turned on, the gate circuit 101 is gated, and the battery 11 supplies power to the host circuit 12 to be activated.
In yet another alternative embodiment, as shown in fig. 2, the self-locking circuit 102 includes: an NPN triode Q3; the collector of the NPN triode Q3 is connected to the gate terminal A2 of the gate circuit 101, the emitter is connected to ground, the base is connected to the host circuit 12 to be activated and ground, and a resistor R8 is connected in series between the base and ground. Optionally, a resistor R7 is connected in series between the base of the NPN triode Q3 and the self-locking signal output terminal A5 of the host circuit 12 to be activated.
The self-locking circuit 102 works in a self-locking state, and after the automatic reset switch circuit 103 is reset, the gating circuit 101 can be maintained in a gating state, so that the battery 11 can continuously supply power to the host circuit 12 to be activated. To facilitate understanding of the working principle, the self-locking circuit shown in fig. 2 is exemplified below.
As shown in fig. 2, when the switch K1 is closed, the gating circuit 101 is gated, so that the battery 11 supplies power to the host circuit 12 to be activated, the host circuit 12 to be activated is activated, and the switch detection circuit 104 detects that the switch K1 is closed, and outputs a high level to the base of the NPN transistor Q3 of the self-locking circuit 102 through the self-locking signal output port A5, and the emitter of the NPN transistor Q3 is grounded, so that the voltage between the base and the emitter of the NPN transistor Q3 is greater than the turn-on voltage of the NPN transistor Q3, and the NPN transistor Q3 is turned on. When the NPN triode Q3 is turned on, the voltage between the emitter and the base of the second PNP triode Q2 of the gate circuit 101 is greater than the turn-on voltage of the second PNP triode Q2, and the second PNP triode Q2 is turned on; similarly, the first PNP transistor Q1 is turned on, so that the battery 11 supplies power to the host circuit 12 to be activated.
On the other hand, even when the self-locking circuit 102 works in the self-locking state when the automatic reset switch circuit 103 is reset, the host circuit 12 to be activated continuously sends out a holding signal for maintaining self-locking, in the circuit schematic diagram shown in fig. 2, the holding signal is a high level signal, and then the NPN transistor in the self-locking circuit 102 is in the conducting state, so that the first PNP transistor Q1 and the first PNP transistor Q2 are also in the conducting state, that is, the gating circuit 102 keeps gating, and the battery 11 always supplies power to the host circuit 12 to be activated. Preferably, the NPN triode in the self-locking circuit 102 and the second PNP triode Q2 in the gating circuit 102 can operate in an amplified or saturated state; the first PNP transistor Q2 in the gating circuit 102 can operate in saturation.
In yet another alternative embodiment, the required voltage of the host circuit 12 to be activated is not adapted to the voltage provided by the battery 11, and generally the required voltage of the host circuit 12 to be activated is smaller than the voltage provided by the battery 11. In order to prevent the host circuit 12 to be activated from being burned out due to the excessive voltage supplied by the battery 11, as shown in fig. 1, the power output terminal of the optional circuit 101 is connected to the power management chip circuit 105 to convert the voltage supplied by the battery 11 into the voltage required by the host circuit 12 to be activated.
Further, as shown in fig. 2, the input terminal of the power management chip circuit 105 is connected to the collector of the first PNP transistor Q1, and the output terminal thereof is connected to the power supply terminal of the circuit to be activated.
Further, as shown in fig. 2, the power management chip circuit 105 includes: a first filter circuit 105a, a second filter circuit 105b and a power management chip U1. Optionally, the ground terminal 1 of the power management chip U1 is connected to ground; an input end 2 of the power management chip U1 is connected with a collector electrode of a first PNP triode Q1 through a resistor R1, and a first filter circuit 105a is connected between the input end 2 of the power management chip U1 and the ground in series; the second filter circuit 105b is connected in series between the output end 3 of the power management chip U1 and the ground; and the output end 3 of the power management chip U1 is connected with the power supply end of the host circuit to be activated. The first filter circuit 105a can not only prevent the voltage from dropping due to sudden change of the current output by the battery 11, which is equivalent to filtering the ripple of the voltage output by the battery 11, but also filter the noise in the voltage output by the battery 11. Accordingly, the second filter circuit 105b can not only prevent the voltage from dropping due to sudden change of the current output by the power management chip U1, which is equivalent to filtering the ripple of the voltage output by the power management chip U1, but also filter the noise in the voltage output by the power management chip U1.
Alternatively, as shown in fig. 2, the first filter circuit 105a and the second filter circuit 105b each include: and the capacitor with electrodes and the capacitor without electrodes are connected in parallel. As shown in fig. 2, the first filter circuit 105a is formed by connecting an active capacitor EC1 and an electrodeless capacitor C2 in parallel; the second filter circuit 105b is formed by connecting an active capacitor EC2 and an electrodeless capacitor C3 in parallel. The active capacitors EC1 and EC2 have a large capacity, and are used for filtering low-frequency ripples, such as ripple voltages of dc voltages output by the battery 11 and the power management chip U1. The capacitors of the electrodeless capacitors C2 and C3 are small and used for filtering high-frequency noise, such as high-frequency noise in the dc voltage output by the battery 11 and the power management chip U1. The capacities of the active capacitors EC1 and EC2 and the non-active capacitors C2 and C3 may be adaptively adjusted according to actual situations, and are not limited in the present invention.
Alternatively, when the activation circuit includes the power chip management circuit 105, as shown in fig. 2, the anode of the diode D1 of the switch detection circuit 104 is connected to the output terminal of the power chip management circuit 105, and the resistor R9 is connected in series between the anode of the diode D1 and the output terminal of the power chip management circuit 105.
It should be noted that, in the circuit structure diagram provided in the embodiment of the present invention, each component may be replaced by a component having the same or similar function. For example, the first PNP transistor and the second PNP transistor in the gating circuit 101 may be replaced with a first NPN transistor and a second NPN transistor, and correspondingly, the NPN transistor in the self-locking circuit 102 may be replaced with a PNP transistor; and the connection relationship between the devices is adaptively adjusted by referring to the circuit operation principle diagram shown in fig. 2. For another example, the first PNP transistor and the second PNP transistor in the gating circuit 101 may be replaced with a first P-MOS transistor and a second P-MOS transistor, and correspondingly, the NPN transistor in the self-locking circuit 102 may be replaced with an N-MOS transistor; and the connection relationship between the devices is adaptively adjusted by referring to the circuit operation principle diagram shown in fig. 2.
The following description will exemplarily describe an activation circuit formed by replacing the first PNP transistor in the gating circuit 101 with a first P-MOS transistor.
For the gating circuit, the source electrode of the first P-MOS tube is used as a power supply input end and connected with the anode of the battery, and the drain electrode of the first P-MOS tube is used as a power supply output end and connected with the power supply end of the host circuit to be activated; two resistors are connected in series between the source electrode of the PNP triode and the anode of the battery, and the grid electrode of the first P-MOS tube is connected with the series connection point of the two resistors; the base electrode of the PNP triode is connected with the self-locking circuit and the automatic reset switch circuit, and the collector electrode of the PNP triode is grounded.
Correspondingly, for the self-locking circuit, the collector of the NPN triode is connected with the base of the PNP triode in the gating circuit, the emitter of the NPN triode is connected with the ground, the base of the NPN triode is respectively connected with the host circuit to be activated and the ground, and a resistor is connected between the base of the NPN triode and the ground in series.
It should be further noted that the host circuit to be activated in the embodiment of the present invention includes a processor, and optionally, the processor may be a Micro Controller Unit (MCU). The processor performs the functions of the host circuit to be activated, such as outputting a self-locking signal to the self-locking circuit and detecting whether a switch in the automatic reset switch circuit is closed or not by the switch detection circuit.
Fig. 3 is a schematic structural diagram of a vacuum cleaner according to an exemplary embodiment of the present invention. As shown in fig. 3, the vacuum cleaner 30 includes: a battery 301, an activation circuit 302, and a host circuit 303. The schematic structural diagram of the activation circuit 302 is shown in fig. 1, wherein the activation circuit 10 shown in fig. 1 represents the activation circuit 302 in fig. 3, the battery 11 shown in fig. 1 represents the battery 301 in fig. 3, and the host circuit to be activated 12 shown in fig. 1 represents the host circuit 302 in fig. 3; wherein the activation circuit 302 includes: a gating circuit 101, a self-locking circuit 102 and an automatic reset switch circuit 103. The gating circuit 101 comprises a power input end A1, a gating end A2 and a power output end A3; the power input end A1 of the gating circuit 101 is connected with the positive pole B + of the battery 301, the power output end A3 of the gating circuit is connected with the power supply end A4 of the host circuit 303, and the gating end A2 is respectively connected with one end of the self-locking circuit 102 and one end of the automatic reset switch circuit 103; the other end of the automatic reset switch 103 circuit is connected to ground, and the other end of the self-locking circuit 102 is connected to the host circuit 303.
Based on the activation circuit 10 shown in fig. 1, the automatic reset switch circuit 103 can be automatically reset after its switch is pressed to supply an activation signal to the gate circuit 101; the gating circuit 101 is gated by the activation signal to enable the battery 301 to supply power to the host circuit 303, the host circuit 303 outputs a holding signal to the self-locking circuit 102 in a power supply state, and the self-locking circuit 102 forms a current loop with the gating circuit 101 under the triggering of the holding signal to enable the gating circuit 101 to maintain a gating state, so that the battery 12 can always supply power to the host circuit 12 to be activated. Also, since the automatic reset switch circuit 103 automatically resets after the activation circuit is supplied to the gate circuit 101, the battery 301 does not supply power to the activation circuit 302 any more when the host stops operating.
It should be noted that, for a detailed description of the activation circuit 302 in this embodiment, reference may be made to the related description in fig. 1 and fig. 2 in the foregoing embodiments, and details are not repeated here.
The dust collector provided by the embodiment comprises: a battery, an activation circuit, and a host circuit. Wherein, activation circuit includes: a gating circuit, a self-locking circuit and an automatic reset switch circuit. In combination with a specific connection relation among the gating circuit, the self-locking circuit and the automatic reset switch circuit, when a switch in the automatic reset switch circuit is pressed down, an activation signal can be provided for the gating circuit, the gating circuit is gated by the activation signal to enable the battery to supply power to the host circuit, the host circuit outputs a holding signal to the self-locking circuit in a power supply state, the self-locking circuit and the gating circuit form a current loop under the triggering of the holding signal to enable the gating circuit to keep the gating state, and therefore the battery can continuously supply power to the host circuit when the host circuit works; in addition, because the automatic reset switch circuit can automatically reset after the switch is pressed down, when the host circuit stops working, the self-locking circuit fails, the gating circuit can automatically switch from the gating state to the non-gating state and does not supply power to the activation circuit any more, the energy consumption can be saved, and the battery starvation can be avoided as much as possible.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or cleaner that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or cleaner. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another like element in a process, method, article, or cleaner that comprises the element.
The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (7)
1. An activation circuit, comprising: the automatic reset circuit comprises a gating circuit, a self-locking circuit and an automatic reset switch circuit;
the gating circuit comprises a power supply input end, a gating end and a power supply output end; the power supply input end of the gating circuit is connected with the anode of the battery, the power supply output end of the gating circuit is connected with the power supply end of the host circuit to be activated, and the gating end of the gating circuit is respectively connected with one end of the self-locking circuit and one end of the automatic reset switch circuit; the other end of the automatic reset switch circuit is connected with the ground, and the other end of the self-locking circuit is connected with the host circuit to be activated;
wherein the automatic reset switch circuit is automatically reset after a switch thereof is pressed to provide an activation signal to the gate circuit; the gating circuit is gated by the activation signal so that the battery supplies power to the host circuit to be activated, the host circuit to be activated outputs a holding signal to the self-locking circuit in a power supply state, and the self-locking circuit and the gating circuit form a current loop under the triggering of the holding signal so that the gating circuit keeps a gating state;
wherein the automatic reset switch circuit comprises: an RC parallel loop and a switch; the RC parallel loop is connected with the switch in series to form a series circuit, and the series circuit is connected between the gating end of the gating circuit and the ground;
the self-locking circuit includes: an NPN triode; the collector of the NPN triode is connected with the gating end of the gating circuit, the emitter of the NPN triode is connected with the ground, the base of the NPN triode is respectively connected with the host circuit to be activated and the ground, and a resistor is connected between the base and the ground in series;
the gating circuit comprises a first PNP triode and a second PNP triode which are connected in series;
an emitting electrode of the first PNP triode is used as a power supply input end and connected with the anode of the battery, and a collecting electrode of the first PNP triode is used as a power supply output end and connected with a power supply end of the host circuit to be activated; two resistors are connected in series between the emitting electrode of the second PNP triode and the positive electrode of the battery, and the base electrode of the first PNP triode is connected with the series connection point of the two resistors; the base electrode of the second PNP triode is connected with the self-locking circuit and the automatic reset switch circuit, and the emitting electrode of the second PNP triode is grounded.
2. The activation circuit of claim 1, wherein the switch in the automatic reset switch circuit is an automatic reset switch; one end of the automatic reset switch is connected with the gating end of the gating power after being connected with the resistor in series; the other end of the automatic reset switch is connected with the ground.
3. The activation circuit of claim 1 or 2, further comprising: a switch detection circuit, the switch detection circuit comprising: a diode; the cathode of the diode is connected with one end of the automatic reset switch circuit far away from the ground, the anode of the diode is connected with the power output end of the gating circuit and the switch detection port of the host circuit to be activated respectively, and resistors are connected in series between the anode and the power output end and between the anode and the switch detection port respectively.
4. The activation circuit of claim 1, further comprising: a power management chip circuit; the input end of the power management chip circuit is connected with the collector electrode of the first PNP triode, and the output end of the power management chip circuit is connected with the power supply end of the host circuit to be activated.
5. The activation circuit of claim 4, wherein the power management chip circuit comprises: the power supply comprises a first filter circuit, a second filter circuit and a power supply management chip;
the input end of the power management chip is connected with the collector electrode of the first PNP triode through a resistor, and the first filter circuit is connected between the input end of the power management chip and the ground in series; the second filter circuit is connected between the output end of the power management chip and the ground in series; the output end of the power management chip is connected with the power supply end of the host circuit to be activated; and the grounding end of the power management chip is connected with the ground.
6. The activation circuit of claim 5, wherein the first filter circuit and the second filter circuit each comprise: and the capacitor with electrodes and the capacitor without electrodes are connected in parallel.
7. A vacuum cleaner, comprising: a battery, an activation circuit as claimed in any one of claims 1 to 6 and a host circuit to be activated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810731058.1A CN108933585B (en) | 2018-07-05 | 2018-07-05 | Activation circuit and dust collector |
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| CN201810731058.1A CN108933585B (en) | 2018-07-05 | 2018-07-05 | Activation circuit and dust collector |
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| CN108933585A CN108933585A (en) | 2018-12-04 |
| CN108933585B true CN108933585B (en) | 2022-12-13 |
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| CN108933585A (en) | 2018-12-04 |
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Effective date of registration: 20200828 Address after: 215168, No. 108 West Lake Road, Suzhou, Jiangsu, Wuzhong District Applicant after: TINECO INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: 215168, No. 108 West Lake Road, Suzhou, Jiangsu, Wuzhong District Applicant before: ECOVACS ROBOTICS Co.,Ltd. |
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