CN104122803A - Solar standby power supply device - Google Patents

Abstract

The invention discloses a solar standby power supply device which is used for providing a solar power supply when an electric appliance is in a standby state and comprises a solar power supply unit (1), a control unit (2), a relay (3), a power panel (4) and an electric appliance mainboard CPU unit (5), wherein the control unit (2) is connected between the solar power supply unit (1) and a control coil of the relay (3) to control the on-off action of the relay (3). The working principle of the invention is that when the electric appliance is in a standby state, the control unit (2) controls the switching action of the relay (3) to automatically cut off the power supply path between the mains supply input end and the power panel (4), and the solar power supply unit (1) supplies power to the CPU unit (5) of the main board of the electric appliance, thereby realizing the zero-power-consumption standby of the electric appliance.

Description

A solar standby power supply device

technical field

The present invention relates to a solar standby power supply device, more specifically, relates to a device using solar energy power supply when electronic or electrical equipment is in a standby state.

Background technique

When the electrical appliance is in standby, it can receive the start command from the remote control, so the start-up speed is fast and the start-up is more convenient. At this stage, most electrical products generally have a standby function. When the electrical appliance is in the standby state, the functional circuit of the electrical appliance does not work. Only the standby part is working. After the standby state is over, the functional circuit of the electrical appliance will work. Circuits, for electrical appliances, are powered by mains power, but the power consumption is relatively small during standby. In this way, because people have not formed the habit of unplugging the power supply of electrical appliances or turning off the main power supply of electrical appliances, they keep the electrical appliances in the standby state for a long time, and the power supply of the main board of the electrical appliances is always working, so the electrical appliances are also consuming electric energy when they are in the standby state. In the era of tight supply and demand, the standby power consumption of electrical appliances is very large, and it will increase household electricity bills and cause energy waste. This is a very serious and realistic problem. If the standby power consumption of electrical appliances can be reduced or zero power consumption can be achieved , which will have economic and social benefits. In the existing invention, in order to realize energy saving, the power consumption in the standby state is generally reduced, and the implementation circuit is relatively complicated.

Contents of the invention

The purpose of the present invention is to solve the above problems and provide a solar standby power supply device. When the electrical appliance is in the standby state, the solar power supply unit supplies power to the CPU unit of the electrical appliance mainboard, truly realizing zero power consumption standby, and the circuit operation is simple.

The solar standby power supply device of the present invention includes a solar power supply unit, a control unit, a relay, a power supply board, and an electrical mainboard CPU unit, and the control unit is connected between the solar power supply unit and the relay control coil to control the relay. switch action, when the electrical appliance is in the standby state, the control unit controls the switching action of the relay so that the power supply path between the mains input terminal and the power supply board is automatically cut off, and the solar power supply unit supplies power to the electrical main board CPU Unit supplies power.

In the above-mentioned solar standby power supply device of the present invention, when the electrical appliance is in the power-on state, the control unit controls the switching action of the relay so that the input end of the commercial power is connected to the power board, and the power board supplies power to the said electrical appliances.

In the above-mentioned solar standby power supply device of the present invention, the relay is a normally closed relay, one end of the relay contact is connected to the power board, and the other end is connected to the mains.

In the above-mentioned solar standby power supply device of the present invention, the solar power supply unit includes diodes D2 and D3 connected in series, wherein the anode of the diode D2 is connected to the solar battery, and the cathode of the diode D3 is connected to the main board of the electrical appliance to provide low-voltage DC power supply, and the solar power supply unit also It includes resistors R16 and R22 with one end connected to the connection of diodes D2 and D3, and filter capacitors C28 and C31 respectively connected between the negative ends of diodes D2 and D3 and the ground, wherein the other end of resistor R23 is connected to the relay One end of the coil is connected, and the other end of the resistor R16 is connected with the control unit.

In the above-mentioned solar standby power supply device of the present invention, the control unit includes resistors R14 and R13, triodes Q1 and Q3, and diode D1, wherein the base of the triode Q3 is connected to the POWER ON/OFF pin of the main board of the electrical appliance through the resistor R14 so that the electrical appliance is turned on. or standby state, the collector of the triode Q1 is connected to the other end of the resistor R16 of the solar power supply unit, and connected to the base of the triode Q1 through the resistor R13, the collector of the triode Q1 is connected to the other end of the relay coil, and the emitters of the triodes Q1 and Q3 Pole grounded.

Implementing the solar standby power supply device provided by the present invention, when the electrical appliance is in the standby state, the control unit controls the switching action of the relay so that the power supply path between the mains input end and the power supply board is automatically cut off, and the solar energy The power supply unit supplies power to the CPU unit of the mainboard of the electrical appliance; when the electrical appliance is in the power-on state, the control unit controls the switching action of the relay so that the input end of the commercial power is connected to the power supply board, and the power supply board supplies power to the appliance. In this way, the beneficial effect obtained by implementing the solar standby power supply device provided by the present invention is: the electrical appliances are powered by solar energy in the standby state, which not only ensures the convenience of using the electrical appliances in the standby state, but also does not need to plug and unplug the power plug or cut off the main switch of the power supply every time. Without the use of mains electricity, zero power consumption standby is realized, which reduces power consumption and is more beneficial to environmental protection. Moreover, the circuit design of the present invention is simple, and when the solar power supply unit fails to work normally, it will not have any impact on the electrical appliances and can still be used normally.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment of a standby power supply device of the present invention.

FIG. 2 is a schematic circuit diagram of an embodiment of the standby power supply device of the present invention.

Detailed ways

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of an embodiment of a standby power supply device of the present invention. As shown in the figure, the standby power supply device includes a solar power supply unit 1 , a control unit 2 , a relay 3 , a power board 4 and a CPU unit of an electrical main board, and the power board 4 is used to supply power to standby electrical appliances. The control unit 2 is connected between the solar power supply unit 1 and the control coil of the relay 3 to control the switching action of the relay 3. When the electrical appliance is in a standby state, the control unit 2 controls the switching action of the relay 3 so that the mains input end and the power board 4 The power supply path is automatically cut off, and at this time, the solar power supply unit 1 supplies power to the CPU unit 5 of the main board of the electrical appliance; The power supply board 4 supplies power to electrical and electronic products such as television sets and stereos.

The relay 3 is a normally closed relay, one end of the contact of the relay 3 is connected to the power board 4, and the other end is connected to the mains.

When the electrical appliance is in the power-on state, the mains input terminal has an AC voltage with a voltage of 220V and a frequency of 50HZ. The control unit 2 is connected to the control coil of the relay 3, and the control unit 2 controls the switching action of the relay 3, so that the relay 3 The two ends of the coil do not form a loop, and the relay 3 is in a non-working state. At this time, the mains input terminal is directly connected with the power supply board 4, and the 220V AC power is supplied to the power supply board by the mains input terminal.

When the electrical appliance is in the standby state, the control unit 2 controls the switching action of the relay 3, so that the two ends of the control coil of the relay 3 form a loop, and the relay 3 is in the working state. At this time, the normally closed contact of the relay 3 is opened. The AC voltage with a voltage of 220V and a frequency of 50HZ is provided, but it cannot be connected to the power board 4, so the power supply path between the mains input terminal and the power board 4 is automatically cut off, and at this time, the solar power supply unit 1 supplies power to the electrical mainboard CPU unit 5 powered by.

Fig. 2 is a circuit diagram of the standby power supply device of the present invention. As shown in the figure, the solar power supply unit 1 includes diodes D2 and D3 connected in series, mainly using the unidirectional conductivity of the diodes to prevent current backflow, wherein the anode of the diode D2 is connected to the solar battery , the negative electrode of diode D3 is connected to the CPU of the mainboard of the electrical appliance, and the control voltage of +5V is output to supply power to the stand-by pin of the mainboard of the electrical appliance. The solar power supply unit 1 also includes resistors R16, R22 and The filter capacitors C28 and C31 are respectively connected between the negative terminals of the diodes D2 and D3 and the ground. The filter capacitors are used to filter out the existing impurity signals or AC signals. The other end of the resistor R22 is connected to one end of the coil of the relay 3 The other end of the resistor R16 is connected to the control unit 2.

The control unit 2 includes resistors R14 and R13, transistor Q1 and transistor Q3, wherein the base of the transistor Q3 is connected to the POWER ON/OFF pin of the main board of the electrical appliance through the resistor R14 to make the electrical appliance in a power-on or standby state, and the collector of the transistor Q2 is connected to the solar power supply unit 1 The other end of the resistor R16 is connected to the base of the transistor Q1 through the resistor R13, the collector of the transistor Q1 is connected to the other end of the coil of the relay 3, the emitters of the transistor Q1 and the transistor Q3 are both grounded, and the control unit 2 also includes two NC capacitors C29 and C31, after the two capacitors are connected in parallel, one end is connected to the collector of the transistor Q3, and the other end is grounded.

A diode D1 is also connected in parallel to both ends of the coil of the relay 3, and the diode D1 can prevent reverse voltage from being generated when the switching action of the relay 3 changes and damage other components.

In this embodiment, the relay adopts a normally closed relay with a specification of 220V8A and is driven by a 5V voltage. The solar battery module contains a rechargeable battery, and the output specification is +5V0.2mA. The resistance value of each resistor can be set as required. In the embodiment, the control unit 2 only needs to be able to control the switching action of the relay.

When the electrical appliance is not connected to the solar power supply, because the relay 3 is normally closed, there is no control voltage at both ends of the relay coil, and the relay is in a non-working state. Pin 1 and pin 3, pin 2 and pin 4 are connected, and the mains input terminal directly passes through the relay. It is connected with the power board, and then the power board supplies power to the electrical appliance CPU unit 5, and the electrical appliance is normally on standby.

When the electrical appliance is connected to the solar power supply, if the electrical appliance is in the standby state, the solar power supply unit 1 provides an input voltage of +5V. At this time, the "B" point in the circuit is at a high level, the transistor Q1 is in a conducting state, and then the "A" point is Low level, so the triode Q3 is not conducting, and the two ends of the coil of the relay 3 form a loop and are in working condition. Pin 1 and pin 3, and pin 2 and pin 4 are open. At this time, the input voltage of the mains cannot supply power to the power board 4 through the relay. , the power supply path between the mains input and the power board 4 is automatically cut off, and at the same time the "②" position in the solar power supply unit 1 outputs +5V voltage, which supplies power to the +5V stand-by pin of the electrical main board, realizing the use of solar energy by the electrical main board standby.

If the electrical appliance is in the power-on state, the "③" position of the POWER ON/OFF pin of the electrical appliance mainboard inputs the +5V control voltage provided by the stand-by pin of the electrical mainboard. At this time, the transistor Q3 is turned on, and then the "B" point is low. , so Q1 is not conducting, "A" point is high level, and there is no loop formed at both ends of the coil of relay 3. At this time, relay 3 is in a non-working state, and pin 1 and pin 3, pin 2 and pin 4 are connected and kept normally closed state, the mains input is 220V, alternating current with a frequency of 50HZ, which is directly connected to the power board 4 through a relay to supply the power board with 220V alternating current, and then the power board 4 supplies electrical appliances, and the electrical appliances start normally.

When the solar power supply unit 1 is abnormal, it cannot supply power to the CPU unit 5 of the main board of the electrical appliance. At this time, it is equivalent to that there is no control voltage at both ends of the coil of the relay 3, and the relay 3 is in a non-working state. Pin 1 and pin 3, and pin 2 and pin 4 are connected. Keep the normally closed state, the mains input terminal directly supplies power to the power board 4 through the relay 3, and then the power board 4 supplies power to the electrical appliances, and the electrical appliances work normally. Therefore, when the solar power supply unit 1 fails to supply power normally, the electrical appliances can still be used normally.

When the electric appliance is not connected to the solar power supply, the mains input terminal directly supplies power to the power board through the relay, and then the power board supplies power to the electric appliance, and after the solar power supply is connected, the solar power supply unit supplies power to the CPU unit of the electric appliance motherboard, and the electric appliance The main board uses solar energy standby, which truly realizes zero power consumption standby, and responds to the requirements of the European Union for energy efficiency.

In this embodiment, the solar power supply unit may include a rechargeable battery, which is used to supply power to the CPU unit of the main board of the electrical appliance when the solar battery module fails to work normally.

The solar standby power supply device provided by the present invention is applicable to all electronic and electrical products, such as refrigerators, washing machines, televisions, microwave ovens, audio and other products.

Although the present invention has been described with reference to the accompanying drawings and embodiments, the protection scope of the present invention is not limited thereto. For those skilled in the art, without departing from the spirit and scope of the present invention, they can Various modifications and changes are made in the invention, but easily conceivable changes or replacements should be covered within the protection scope of the present invention.

Claims (5)

1. a sun power standby electric supply installation, for sun-generated electric power is provided in the time of electric appliance standby, it is characterized in that, comprise solar powered unit (1), control module (2), relay (3), power panel (4) and mainboard CPU element (5), described control module (2) is connected between described solar powered unit (1) and described relay (3) control coil to control the switch motion of described relay (3), when described electrical equipment is during in holding state, the switch motion that described control module (2) is controlled described relay (3) is cut off the supply access of mains electricity input end and described power panel (4) automatically, described mainboard CPU element (5) power supply is given in described solar powered unit (1).

2. sun power standby electric supply installation according to claim 1, it is characterized in that, when electrical equipment is during in open state, the switch motion that described control module (2) is controlled described relay (3) makes described mains electricity input end be connected with described power panel (4), is powered to described electrical equipment by described power panel (4).

3. sun power standby electric supply installation according to claim 1 and 2, is characterized in that, described relay (3) is normally closed mould assembly relay, and one end of described relay (3) contact connects described power panel (4), another termination civil power.

4. sun power standby electric supply installation according to claim 1 and 2, it is characterized in that, described solar powered unit (1) comprises the diode D2 and the D3 that are connected in series, wherein, the anodal solar cell that connects of diode D2, diode D3 negative pole connects described mainboard CPU element (5) provides low-voltage DC, described solar powered unit (1) also comprises has respectively one end to be connected to diode D2, the resistance R 16 of D3 junction, resistance R 22 and be connected on respectively diode D2, filter capacitor C28 and C31 between D3 two negative pole ends and ground, wherein the other end of resistance R 23 is connected with described relay (3) coil one end, the other end of resistance R 16 is connected with described control module (2).

5. sun power standby electric supply installation according to claim 4, it is characterized in that, described control module (3) comprises resistance R 14 and R13, triode Q1 and Q3 and diode D1, wherein, described triode Q3 base stage is passed through resistance R 14 connecting circuit mainboard POWER ON/OFF pin to obtain electrical equipment in start or holding state, described triode Q2 collector is connected with resistance R 16 other ends of described solar powered unit (1), and by resistance R 13 connecting triode Q1 base stages, triode Q1 collector is connected with described relay (3) the coil other end, the grounded emitter of described triode Q1 and Q3.