CN210430987U - Single-live-wire switch battery charging circuit and power supply device using same - Google Patents
Single-live-wire switch battery charging circuit and power supply device using same Download PDFInfo
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- CN210430987U CN210430987U CN201921876926.1U CN201921876926U CN210430987U CN 210430987 U CN210430987 U CN 210430987U CN 201921876926 U CN201921876926 U CN 201921876926U CN 210430987 U CN210430987 U CN 210430987U
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Abstract
The utility model relates to a single live wire switch battery charging circuit and a power supply device using the same, wherein the charging circuit comprises a charging control circuit, a charging circuit and an energy storage element; the power supply end of the charging circuit is connected with the single live wire power taking circuit, the input end of the charging control circuit is connected with the single live wire power taking circuit, the output end of the charging control circuit is connected with the current adjusting end of the charging circuit, and the output end of the charging circuit is connected with the energy storage element and charges the energy storage element to store energy. Furthermore, a direct current-direct current conversion circuit is added behind the energy storage element, the voltage of the energy storage element is converted into the voltage required by a subsequent control panel, and the energy storage element is connected with the single-live-wire power taking circuit through the enabling control end, so that the power is output and supplied to the NB-IoT or LoRa communication module and the like only under the condition that the single-live-wire switch is electrified. The single-live-wire switch battery charging circuit and the power supply device are self-adaptive to various lamp loads, low in power consumption, simple in circuit topology, low in cost and easy to realize.
Description
Technical Field
The utility model relates to an environmental data measurement fields such as wireless humiture, in particular to single live wire switch battery charging circuit of wireless room temperature collector of switch type and power supply unit who uses this circuit.
Background
At present, a wireless room temperature collector is in charge of collecting user indoor temperature data in a room temperature monitoring system, the collected temperature data are remotely and wirelessly transmitted to a control center in an NB-IoT or LoRa or other modes, and workers of the control center master the change condition of the temperature of a collecting point at any time and any place, so that heating operation monitoring and energy use monitoring are realized, reasonable heating for users is ensured, energy consumption is reduced, cost is lowered, and energy conservation and emission reduction are realized. Current room temperature collector generally adopts the power supply of outside dry battery, is difficult to maintain long-term daily continuous operation, often needs to change the battery, and is very troublesome, and some room temperature collectors have built-in energy storage element power supply, but need the manual work to charge through outside USB, and is very inconvenient.
Disclosure of Invention
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a power supply unit who need not install by the user, change battery and artifical single live wire switch battery charging circuit who charges and use this circuit is provided.
The utility model provides a technical scheme that its technical problem adopted is:
construct a single live wire switch battery charging circuit, get the circuit including the on-state and get the circuit with the off-state, still include: the charging control circuit 2, the charging circuit 1 and the energy storage element 3; the power supply end VCC of the charging circuit 1 is connected with a single live wire power supply circuit, the input end of the charging control circuit 2 is connected with an on-state power supply circuit, the output end of the charging control circuit 2 is connected with the current regulation end PROG of the charging circuit 1, and the output end of the charging circuit 1 is connected with the energy storage element 3 to charge the energy storage element. Further, add DC-DC converter circuit 4, DC-DC converter circuit 4's input VIN is connected with energy storage element 3, DC-DC converter circuit 4's enable control end CE is connected with the single live wire electricity-taking circuit, the Output (OUT) of DC-DC converter circuit (4) is connected with back level control board power end (VOUT).
The object of the present invention is to provide a hardware configuration different from the prior art, enabling the technician to implement further development under such hardware configuration.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the single-live-wire switch type room temperature collector is directly upgraded by using a ubiquitous wall switch, the problem of 'wiring-free' installation of the room temperature collector is solved by using a single-live-wire electricity taking technology, the long-term power supply reliability and the temperature measurement accuracy are ensured, and the single-live-wire switch battery charging circuit which is self-adaptive to various lamp loads, free of maintenance, low in power consumption, simple in circuit topology, low in cost and easy to implement is provided;
2. the on/off of the direct current-direct current circuit is automatically switched according to the power supply voltage VDD of the single live wire power-taking circuit, the energy storage element is enabled to supply power to the rear-stage control board only under the condition that the single live wire switch is electrified, and the waste of stored electric energy in the transportation or storage process of the single live wire switch is avoided;
3. the charging current of the charging circuit is automatically adjusted according to the power of the external lamp load (the power supply voltage VCC1 of the on-state power taking circuit is high or low), and the phenomenon of flicker of the lamp load in the charging process is avoided.
Drawings
Fig. 1 is a schematic block diagram of a single-live-wire switch battery charging circuit and a power supply device using the same according to an embodiment of the present invention.
Fig. 2 is a circuit structure diagram of a single live wire switch battery charging circuit and a power supply device using the same according to an embodiment of the present invention.
Fig. 3 is a circuit configuration diagram of a second embodiment of the charging control circuit of the present invention.
Fig. 4 is a circuit configuration diagram of a second embodiment of the charging circuit of the present invention.
Fig. 5 is a circuit configuration diagram of a third embodiment of the charging circuit of the present invention.
Fig. 6 is a circuit configuration diagram of a fourth embodiment of the charging circuit of the present invention.
Detailed Description
For the understanding of those skilled in the art, the present invention will be further described with reference to the accompanying drawings, which are not intended to limit the present invention.
As shown in fig. 1, the utility model discloses single live wire switch battery charging circuit gets circuit and off-state including the on-state and gets the circuit, still includes charge control circuit 2, charging circuit 1, energy storage element 3.
The power supply end VCC of the charging circuit 1 is connected with a single live wire power supply circuit, the input end of the charging control circuit 2 is connected with an on-state power supply circuit, the output end of the charging control circuit 2 is connected with the current regulation end PROG of the charging circuit 1, and the output end of the charging circuit 1 is connected with the energy storage element 3 to charge the energy storage element.
The charging control circuit 2 realizes automatic adjustment of the charging current of the charging circuit 1 according to the magnitude of the external lamp load power (the power supply voltage VCC1 of the on-state power taking circuit is high or low).
The charging circuit 1 includes a battery charger chip, or a charging circuit composed of discrete devices.
The single live wire power taking circuit is a power supply circuit consisting of an on-state power taking circuit and an off-state power taking circuit,
the on-state electricity taking circuit is a power supply circuit for taking electricity when the lamp load is turned on.
The connection mode of getting the electric circuit with single live wire includes but not limited to: the direct connection is connected after passing through the voltage converter and connected after passing through the LDO.
The connection mode connected with the on-state power-taking circuit includes but is not limited to: the direct connection is connected after passing through the voltage converter and connected after passing through the LDO.
The energy storage element 3 includes but is not limited to: a rechargeable battery, or a super capacitor.
Furthermore, a direct current-direct current circuit 4 is added on the basis of the single-live-wire switch battery charging circuit, so that the single-live-wire switch battery power supply device is realized.
The input end VIN of the DC-DC converter circuit 4 is connected with the energy storage element 3, the enabling control end CE of the DC-DC converter circuit 4 is connected with the single live wire power taking circuit, and the output end OUT of the DC-DC converter circuit 4 is connected with the power end VOUT of the rear-stage control board.
The following describes in detail the implementation of each part of the circuit with reference to the schematic block diagram and the circuit structure diagram of the embodiment.
The charge control circuit 2:
the charge control circuit 2 is mainly used for controlling the magnitude of the charge current, and comprises a regulating tube circuit formed by a transistor or a field effect tube, and the specific embodiment is as follows:
first embodiment of the charge control circuit 2:
as shown in fig. 2, the charge control circuit 2 includes a fourth resistor R4, a fifth resistor R5, and a third transistor Q3; the basic connection relationship is as follows: one end of a fourth resistor R4, the input end VIN of the charging control circuit 2 is connected with an on-state power taking circuit, the other end of the fourth resistor R4 is connected with the base B of a third triode Q3, the emitter E of the third triode Q3 is connected with a common ground GND of a system direct-current power supply, the collector C of the third triode Q3 is connected with one end of a fifth resistor R5, and the other end of the fifth resistor R5 is connected with the output end OUT of the charging control circuit 2 and the current regulation end PROG of the charging circuit (1).
The third triode Q3 is an NPN triode or an N-channel field effect transistor.
Second embodiment of the charge control circuit 2:
as shown in fig. 3, the charge control circuit 2 includes a zener diode Z1, a resistor R3, a resistor R4, a resistor R5, and a transistor Q3, and the basic connection relationships are as follows: the cathode of the first zener diode Z1 and the input end VIN of the charging control circuit 2 are connected with an on-state power taking circuit, the anode of the first zener diode Z1 is connected with one end of a third resistor R3 and one end of a fourth resistor R4, the other end of the fourth resistor R4 is connected with the base B of a third triode Q3, the other end of the third resistor R3 and the emitter E of the third triode Q3 are connected with a common ground GND of a system direct-current power supply, the collector C of the third triode Q3 is connected with one end of a fifth resistor R5, and the other end of the fifth resistor R5 is connected with the output end OUT of the charging control circuit 2 and the current regulation end PROG of the charging circuit (1).
The third triode Q3 is an NPN triode or an N-channel field effect transistor.
Charging circuit 1:
the charging circuit 1 mainly realizes charging of the battery.
First embodiment of the charging circuit 1:
as shown in fig. 2, the charging circuit 1 includes a first resistor R1, a second resistor R2, a first diode D1, a first transistor Q1, and a second transistor Q2; the basic connection relationship is as follows: the collector C of the first triode Q1, the base B of the second triode Q2 are connected with the current regulation end PROG of the charging circuit 1, the emitter E of the first triode Q1, one end of the second resistor R2, one end of the first resistor R1 and the power supply end VCC of the charging circuit 1 are connected with a single-live-wire power supply circuit, the other end of the second resistor R2 is connected with the emitter E of the second triode Q2 and the base B of the first triode Q1, the other end of the first resistor R1 and the collector C of the second triode Q2 are connected with the anode of a first diode D1, and the cathode of the first diode D1 is connected with the output end BAT of the charging circuit 1 and the positive end BAT + of the energy storage element 3.
The first triode Q1 and the second triode Q2 are PNP triodes.
as shown in fig. 4, the charging circuit 1 includes a battery charger chip U1, a first diode D1, and a first resistor R1; the basic connection relationship is as follows: the programmable charging current setting pin PROG of the battery charger chip U1 is connected with the current regulation end PROG of the charging circuit 1, the grounding pin GND of the battery charger chip U1 is connected with the common ground GND of a system direct-current power supply, the power supply pin VCC of the battery charger chip U1, one end of a first resistor R1 and the power supply end VCC of the charging circuit 1 are connected with a single-live wire power supply circuit, the other end of the first resistor R1 is connected with the anode of a first diode D1, the cathode of a first diode D1 is connected with the battery pin BAT of the battery charger chip U1, the output end BAT of the charging circuit 1 and the positive end BAT + of the energy storage element 3.
Preferred models of the battery charger chip U1 include, but are not limited to: ME4055, or TP 4065.
as shown in fig. 5, the charging circuit 1 includes a battery charger chip U1, a first resistor R1; the basic connection relationship is as follows: the programmable charging current setting pin PROG of the battery charger chip U1 is connected with one end of a first resistor R1 and a current regulation end PROG of the charging circuit 1, the other end of the first resistor R1 is connected with a grounding pin GND of the battery charger chip U1 and a system direct-current power supply common ground GND, a power supply pin VCC of the battery charger chip U1 and a power supply end VCC of the charging circuit 1 are connected with a single-live-wire power supply circuit, and a battery pin BAT of the battery charger chip U1 is connected with an output end BAT of the charging circuit 1 and a positive electrode terminal BAT + of the energy storage element 3.
The battery charger chip U1 is preferably of the type: ME4055, or TP 4065.
as shown in fig. 6, the charging circuit 1 includes a first resistor R1, a second resistor R2, a first diode D1, and a second transistor Q2; the basic connection relationship is as follows: the base B of the second triode Q2 is connected with the current regulation end PROG of the charging circuit 1, one end of the second resistor R2, one end of the first resistor R1 and the power supply end VCC of the charging circuit 1 are connected with a single live wire power taking circuit, the other end of the second resistor R2 is connected with the emitter E of the second triode Q2, the other end of the first resistor R1 and the collector C of the second triode Q2 are connected with the anode of the first diode D1, and the cathode of the first diode D1 is connected with the output end BAT of the charging circuit 1 and the positive electrode BAT + of the energy storage element 3.
The first triode Q1 and the second triode Q2 are PNP triodes.
Dc-dc converter circuit 4:
the dc-dc circuit 4 is mainly used to convert the voltage of the energy storage element into a voltage matched with a subsequent control board.
As shown in fig. 2, the DC-DC circuit 4 includes a DC-DC conversion power chip U2, and the power chip U2 includes or is formed by a DC/DC converter chip or a CMOS low dropout regulator chip LDO; the basic connection relationship is as follows: a power input pin VIN of a power chip U2 is connected with an input terminal VIN of the dc-dc converter circuit 4, a power output pin OUT of a power chip U2 is connected with an output terminal OUT of the dc-dc converter circuit 4 and a power terminal VOUT of a rear-stage control board, an enable pin CE of a power chip U2 and an enable control terminal CE of the dc-dc converter circuit 4 are connected with a single-live-wire power-taking circuit, and a ground pin VSS of the power chip U2 is connected with a common ground GND of a system dc power supply.
The direct current-to-direct current circuit 4 realizes that the direct current-to-direct current circuit 4 is automatically switched on or off according to the power supply voltage VDD of the single live wire power-taking circuit, and the energy storage element 3 is enabled to supply power to the rear-stage control panel only under the condition that the single live wire switch is electrified.
The preferred types of the power chip U2 in the dc-dc circuit 4 include, but are not limited to: ME6215, or S-8521, or TPS62120, or HT 7533.
The above description is only the specific embodiment of the preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and although the present invention has been disclosed with the preferred embodiment, but not limited to the present invention, any skilled person familiar with the art can make some changes or modifications to equivalent embodiments with equivalent changes within the technical scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical essence (technical solution and its utility model concept) of the present invention do not depart from the technical scope of the present invention.
Claims (10)
1. A single live wire switch battery charging circuit (5) comprises an on-state power taking circuit and an off-state power taking circuit; the on-state electricity-taking circuit is a power supply circuit for taking electricity when the lamp load is turned on and lightened, the off-state electricity-taking circuit is a power supply circuit for taking electricity when the lamp load is turned off,
the method is characterized in that: the charging circuit also comprises a charging control circuit (2), a charging circuit (1) and an energy storage element (3);
the power supply end (VCC) of the charging circuit (1) is connected with the single-live-wire power taking circuit, the input end of the charging control circuit (2) is connected with the on-state power taking circuit, the output end of the charging control circuit (2) is connected with the current regulating end (PROG) of the charging circuit (1), and the output end (BAT) of the charging circuit (1) is connected with the energy storage element (3) to charge the energy storage element so as to store energy;
the single live wire power taking circuit is a power supply circuit consisting of an on-state power taking circuit and an off-state power taking circuit;
the energy storage element (3) comprises a rechargeable battery or a super capacitor;
the charging control circuit (2) comprises an adjusting tube circuit composed of a transistor or a field effect tube, and the charging current of the charging circuit (1) is automatically adjusted according to the load power of an external lamp;
the charging circuit (1) comprises a battery charger chip or a charging circuit composed of discrete devices.
2. The single fire wire switch battery charging circuit (5) of claim 1, characterized in that: the charging control circuit (2) comprises a fourth resistor (R4), a fifth resistor (R5) and a third triode (Q3), wherein: one end of a fourth resistor (R4) and the input end of the charging control circuit (2) are connected with an on-state power taking circuit, the other end of the fourth resistor (R4) is connected with a base electrode (B) of a third triode (Q3), an emitter electrode (E) of the third triode (Q3) is connected with a system direct-current power supply common Ground (GND), a collector electrode (C) of the third triode (Q3) is connected with one end of a fifth resistor (R5), and the other end of the fifth resistor (R5) is connected with the output end of the charging control circuit (2) and a current regulation end (PROG) of the charging circuit (1);
the third triode (Q3) is an NPN triode or an N-channel field effect transistor.
3. The single fire wire switch battery charging circuit (5) of claim 1, characterized in that: the charging control circuit (2) comprises a first voltage stabilizing diode (Z1), a third resistor (R3), a fourth resistor (R4), a fifth resistor (R5) and a third triode (Q3), wherein: the cathode of the first zener diode (Z1) and the input end of the charging control circuit (2) are connected with an on-state power taking circuit, the anode of the first zener diode (Z1) is connected with one end of a third resistor (R3) and one end of a fourth resistor (R4), the other end of the fourth resistor (R4) is connected with the base (B) of a third triode (Q3), the other end of the third resistor (R3) and the emitter (E) of the third triode (Q3) are connected with a common Ground (GND) of a system direct current power supply, the collector (C) of the third triode (Q3) is connected with one end of a fifth resistor (R5), and the other end of the fifth resistor (R5) is connected with the output end of the charging control circuit (2) and the current regulation end (PROG) of the charging circuit (1);
the third triode (Q3) is an NPN triode or an N-channel field effect transistor.
4. The single fire wire switch battery charging circuit (5) of claim 1, characterized in that: the charging circuit (1) comprises a first resistor (R1), a second resistor (R2), a first diode (D1), a first triode (Q1) and a second triode (Q2); wherein: the collector (C) of the first triode (Q1) and the base (B) of the second triode (Q2) are connected with the current regulation end (PROG) of the charging circuit (1), an emitting electrode (E) of a first triode (Q1), one end of a second resistor (R2), one end of a first resistor (R1), a power supply end (VCC) of the charging circuit (1) are connected with a single live wire power taking circuit, the other end of the second resistor (R2) is connected with the emitting electrode (E) of the second triode (Q2) and a base electrode (B) of a first triode (Q1), the other end of the first resistor (R1) and a collector electrode (C) of a second triode (Q2) are connected with an anode of a first diode (D1), the cathode of the first diode (D1) is connected with the output end (BAT) of the charging circuit (1) and the positive end (BAT +) of the energy storage element (3);
the first triode (Q1) and the second triode (Q2) are PNP triodes.
5. The single fire wire switch battery charging circuit (5) of claim 1, characterized in that: the charging circuit (1) comprises a first resistor (R1), a second resistor (R2), a first diode (D1) and a second triode (Q2); wherein: the base (B) of the second triode (Q2) is connected with the current regulation end (PROG) of the charging circuit (1), one end of the second resistor (R2), one end of the first resistor (R1) and the power supply end (VCC) of the charging circuit (1) are connected with a single live wire power-taking circuit, the other end of the second resistor (R2) is connected with the emitter (E) of the second triode (Q2), the other end of the first resistor (R1) and the collector (C) of the second triode (Q2) are connected with the anode of the first diode (D1), and the cathode of the first diode (D1) is connected with the output end (BAT) of the charging circuit (1) and the positive end (BAT +) of the energy storage element (3);
the first triode (Q1) and the second triode (Q2) are PNP triodes.
6. The single fire wire switch battery charging circuit (5) of claim 1, characterized in that: the charging circuit (1) comprises a battery charger chip (U1), a first diode (D1) and a first resistor (R1); wherein: a programmable charging current setting pin of the battery charger chip (U1) is connected with a current regulation end (PROG) of the charging circuit (1), a grounding pin of the battery charger chip (U1) is connected with a system direct-current power supply common Ground (GND), a power supply pin of the battery charger chip (U1), one end of a first resistor (R1) and a power supply end (VCC) of the charging circuit (1) are connected with a single-live wire power supply circuit, the other end of the first resistor (R1) is connected with an anode of a first diode (D1), a cathode of the first diode (D1) is connected with a battery pin of the battery charger chip (U1), an output end (BAT) of the charging circuit (1) and a positive electrode end (BAT +) of the energy storage element (3);
the battery charger chip (U1) model: ME4055, or TP 4065.
7. The single fire wire switch battery charging circuit (5) of claim 1, characterized in that: the charging circuit (1) comprises a battery charger chip (U1) and a first resistor (R1); wherein: a programmable charging current setting pin of the battery charger chip (U1) is connected with one end of a first resistor (R1) and a current regulation end (PROG) of the charging circuit (1), the other end of the first resistor (R1) is connected with a grounding pin of the battery charger chip (U1) and a system direct current power supply common Ground (GND), a power supply pin of the battery charger chip (U1) and a power supply end (VCC) of the charging circuit (1) are connected with a single live wire power supply circuit, and a battery pin of the battery charger chip (U1) is connected with an output end (BAT) of the charging circuit (1) and a positive end (BAT +) of the energy storage element (3);
the battery charger chip (U1) model: ME4055, or TP 4065.
8. A single live wire switch battery power supply comprising a single live wire switch battery charging circuit (5) as claimed in any one of claims 1 to 7, wherein: the device also comprises a direct current-direct current circuit (4); the input end of the direct current-to-direct current circuit (4) is connected with the energy storage element (3), the enabling Control End (CE) of the direct current-to-direct current circuit (4) is connected with the single live wire power taking circuit, and the output end of the direct current-to-direct current circuit (4) is connected with the power supply end (VOUT) of the rear-stage control board.
9. The single fire wire switching battery power supply of claim 8, wherein: the direct current-direct current circuit (4) comprises a direct current-direct current conversion power chip (U2), and the power chip (U2) comprises a DC/DC converter chip or a CMOS low dropout linear regulator chip LDO or a combination thereof; wherein: a power input pin (VIN) of a power chip (U2) is connected with an input end of the direct current-to-direct current circuit (4), a power output pin of the power chip (U2) is connected with an output end of the direct current-to-direct current circuit (4) and a power end (VOUT) of a rear-stage control board, an enabling pin of the power chip (U2) and an enabling Control End (CE) of the direct current-to-direct current circuit (4) are connected with a single live wire power taking circuit, and a grounding pin VSS of the power chip (U2) is connected with a common Ground (GND) of a system direct current power supply;
the direct current-to-direct current circuit (4) realizes automatic switching on or off according to the power supply Voltage (VDD) of the single-live-wire power taking circuit, and ensures that the energy storage element (3) supplies power to the rear-stage control board only under the condition that the single-live-wire switch is electrified.
10. The single fire wire switching battery power supply of claim 8, wherein:
the type of a power chip (U2) in the DC-DC circuit (4) is as follows: ME6215, or S-8521, or TPS62120, or HT 7533.
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| CN110676911A (en) * | 2019-11-04 | 2020-01-10 | 东莞市迅迪电子有限公司 | Single-live-wire switch battery charging circuit and power supply device using same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110676911A (en) * | 2019-11-04 | 2020-01-10 | 东莞市迅迪电子有限公司 | Single-live-wire switch battery charging circuit and power supply device using same |
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