CN212210594U - Intelligent dual-power transfer switch - Google Patents
Intelligent dual-power transfer switch Download PDFInfo
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- CN212210594U CN212210594U CN202020793239.XU CN202020793239U CN212210594U CN 212210594 U CN212210594 U CN 212210594U CN 202020793239 U CN202020793239 U CN 202020793239U CN 212210594 U CN212210594 U CN 212210594U
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Abstract
The utility model discloses an intelligent dual supply change-over switch, including main supply circuit, the stand-by power supply circuit that is connected with main supply circuit to and the intelligent switching circuit of power supply that is connected with main supply circuit and stand-by power supply circuit simultaneously. The utility model provides an intelligent dual supply change-over switch, effectual main power supply and stand-by power supply have combined together, can switch over by oneself to stand-by power supply and continuously accomplish external power supply after the power supply disconnection of main power supply, can also effectually externally carry out short period power supply simultaneously in the switching process to can guarantee that external power supply can not break off when the switching circuit.
Description
Technical Field
The utility model relates to a power supply field specifically indicates an intelligent dual supply change-over switch.
Background
The power supply circuit is a commonly used power supply circuit, and functions to supply electric energy to various electric devices.
In the modern society, a simple power supply source is difficult to meet the requirements of people, and many devices need stable power supply when in operation, and meanwhile, when a main power supply is powered off, the power-driven devices also need to be ensured to be capable of maintaining operation.
In order to ensure that the electric equipment can continuously work even when the main power supply of the electric equipment is powered off, people usually add a standby power supply to the electric equipment, but how to complete automatic switching between the main power supply and the standby power supply of the electric equipment is the key point of research and development nowadays.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned problem, provide an intelligent dual power transfer switch, effectually combine main power supply and stand-by power supply together, can switch to stand-by power supply by oneself and continuously accomplish external power supply after the power supply disconnection of main power supply, can also effectually externally carry out short period power supply simultaneously in the switching process to can guarantee that external power supply can not break off when the switching circuit.
The purpose of the utility model is realized through the following technical scheme:
an intelligent dual-power transfer switch comprises a main power supply circuit, a standby power supply circuit connected with the main power supply circuit, and a power supply intelligent switching circuit simultaneously connected with the main power supply circuit and the standby power supply circuit.
Further, the main power supply circuit comprises a transformer T1, a diode bridge rectifier U1, a triode Q1, a triode Q2, a triode Q3, a triode Q4, a capacitor C1 connected in series between the positive output end and the negative output end of the diode bridge rectifier U1, a zener diode D1 with the P pole connected with the negative output end of the diode bridge rectifier U1 and the N pole connected with the positive input end of the diode bridge rectifier U1 through a resistor R1, a resistor R2 with one end connected with the emitter of the triode Q1 and the other end connected with the P pole of the zener diode D1, a capacitor C2 with one end connected with the positive output end of the diode bridge rectifier U1 and the other end connected with the collector of the triode Q1, a zener diode D2 with the N pole connected with the positive output end of the diode bridge rectifier U1 and the P pole connected with the emitter of the triode Q573Q 5, and a zener diode D2 with the P pole of the zener diode D2, A resistor R3 with the other end connected with the emitter of the triode Q3, a capacitor C3 with one end connected with the base of the triode Q4 and the other end connected with the collector of the triode Q3, a slide rheostat RP1 with the slide end connected with the base of the triode Q4, one end connected with the N pole of the zener diode D2 after passing through the resistor R4 and the other end connected with the emitter of the triode Q3 after passing through the resistor R5, and a capacitor C4 with one end connected with the N pole of the zener diode D2 and the other end connected with the emitter of the triode Q3.
Preferably, the primary inductor of the transformer T1 is connected to 220V ac as the power input end of the circuit, two ends of the secondary inductor of the transformer T1 are respectively connected to two power input ends of a diode bridge rectifier U1, the collector of the transistor Q1 is connected to both the base of the transistor Q2 and the collector of the transistor Q4, the collector of the transistor Q2 is connected to the collector of the transistor Q3, and the emitter of the transistor Q2 is connected to the base of the transistor Q3.
Still further, the standby power circuit is composed of a diode D4 and a storage battery pack N with the anode connected with the N pole of the diode D4; the P pole of the diode D4 is connected with the N pole of the voltage stabilizing diode D2, and the negative pole of the storage battery N is connected with the emitting electrode of the triode Q3.
Preferably, the battery pack N is composed of at least one 1.2V rechargeable battery.
Furthermore, the power supply intelligent switching circuit consists of a relay K, a normally open switch K-1 of the relay K, a normally closed switch K-2 of the relay K, a diode D3 of which the P pole is connected with one end of the relay K and the N pole is connected with one end of the normally open switch K-1 of the relay K after passing through a resistor R6, and a resistor R7 of which one end is connected with the N pole of a diode D3 and the other end is connected with one end of the normally closed switch K-2 of the relay K; the other end of the relay K and the other end of the normally open switch K-1 of the relay K are connected with the P pole of the diode D4, and the other end of the normally closed switch K-2 of the relay K is connected with the N pole of the diode D4.
Preferably, the N pole of the diode D3 and the negative pole of the battery pack N constitute a power output terminal.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the utility model discloses effectually combine main power supply and stand-by power supply together, can switch to stand-by power supply by oneself after the power supply disconnection of main power supply and continuously accomplish external power supply, can also effectually externally carry out short period power supply simultaneously switching the in-process to can guarantee that external power supply can not break off when the switching circuit.
Drawings
Fig. 1 is a circuit structure diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
Example 1
As shown in fig. 1, an intelligent dual-power transfer switch includes a main power supply circuit, a backup power supply circuit connected to the main power supply circuit, and an intelligent power supply switching circuit connected to both the main power supply circuit and the backup power supply circuit.
The main power supply circuit comprises a transformer T1, a diode bridge rectifier U1, a triode Q1, a triode Q2, a triode Q3, a triode Q4, a capacitor C1 connected between the positive output end and the negative output end of the diode bridge rectifier U1 in series, a zener diode D1 with the P pole connected with the negative output end of the diode bridge rectifier U1 and the N pole connected with the positive input end of the diode bridge rectifier U1 after passing through a resistor R1, a resistor R2 with one end connected with the emitter of the triode Q1 and the other end connected with the P pole of the zener diode D1, a capacitor C2 with one end connected with the positive output end of the diode bridge rectifier U1 and the other end connected with the collector of the triode Q1, a zener diode D2 with the N pole connected with the positive output end of the diode U1 and the P pole connected with the emitter of the triode Q4, and a zener diode D67 2 with one end connected with the P pole of the zener diode, A resistor R3 with the other end connected with the emitter of the triode Q3, a capacitor C3 with one end connected with the base of the triode Q4 and the other end connected with the collector of the triode Q3, a slide rheostat RP1 with the slide end connected with the base of the triode Q4, one end connected with the N pole of the zener diode D2 after passing through the resistor R4 and the other end connected with the emitter of the triode Q3 after passing through the resistor R5, and a capacitor C4 with one end connected with the N pole of the zener diode D2 and the other end connected with the emitter of the triode Q3.
The primary side inductance coil of the transformer T1 is connected with 220V alternating current as the power input end of the circuit, two ends of the secondary side inductance coil of the transformer T1 are respectively connected with two power input ends of a diode bridge rectifier U1, the collector of a triode Q1 is simultaneously connected with the base of a triode Q2 and the collector of a triode Q4, the collector of a triode Q2 is connected with the collector of a triode Q3, and the emitter of the triode Q2 is connected with the base of a triode Q3.
The main power supply circuit can convert household 220V alternating current into direct current, and the converted direct current is subjected to voltage stabilization and current stabilization treatment, so that the voltage and the current of the external power supply of the main power supply circuit can be kept stable, and the situation that electric equipment cannot be damaged due to the change of the current or the voltage when the main power supply circuit supplies power is reduced.
The capacitor C1 and the capacitor C4 are charged when the main power supply circuit is normally powered on, and the instantaneous normal power supply of power failure is ensured when the main power supply circuit is powered off, so that the time guarantee is provided for the switching of the normally open switch K-1 of the relay K and the normally closed switch K-2 of the relay K, and the influence on use caused by the instantaneous power loss of the electric equipment when the circuit is switched is avoided.
The standby power supply circuit consists of a diode D4 and a storage battery pack N with the anode connected with the N pole of a diode D4; the P pole of the diode D4 is connected with the N pole of the voltage stabilizing diode D2, and the negative pole of the storage battery N is connected with the emitting electrode of the triode Q3.
The storage battery pack N is composed of at least one 1.2V rechargeable battery.
When the main power supply circuit normally supplies power, the main power supply circuit can charge the storage battery pack N, and meanwhile, the diode D4 can ensure that the storage battery pack N cannot supply power to the outside when charging, so that the storage battery pack N is ensured not to lose electric energy when the main power supply circuit normally supplies power, and further the storage battery pack N is ensured to have enough electric energy to supply power to the outside when the main power supply circuit cannot normally supply power.
The power supply intelligent switching circuit consists of a relay K, a normally open switch K-1 of the relay K, a normally closed switch K-2 of the relay K, a diode D3 with a P pole connected with one end of the relay K and an N pole connected with one end of the normally open switch K-1 of the relay K after passing through a resistor R6, and a resistor R7 with one end connected with the N pole of a diode D3 and the other end connected with one end of the normally closed switch K-2 of the relay K; the other end of the relay K and the other end of the normally open switch K-1 of the relay K are connected with the P pole of the diode D4, and the other end of the normally closed switch K-2 of the relay K is connected with the N pole of the diode D4.
When the main power supply circuit normally supplies power, the relay K is electrified, and then the normally open switch K-1 of the relay K is closed, so that the main power supply circuit can supply power to the outside, and meanwhile, the normally closed switch K-2 of the relay K is disconnected, and the electric energy of the storage battery N is prevented from being lost. When the main power supply circuit is powered off or cannot normally supply power, the relay K is powered off, the normally open switch K-1 of the relay K is switched off, and the normally closed switch K-2 of the relay K is switched on, so that the power supply circuit is automatically switched to the standby power supply circuit from the main power supply circuit, and the outward normal power supply of the circuit is ensured.
And the N pole of the diode D3 and the negative pole of the storage battery pack N form a power supply output end.
As described above, the utility model discloses alright fine realization.
Claims (6)
1. An intelligent dual power transfer switch, its characterized in that: the intelligent power supply switching circuit comprises a main power supply circuit, a standby power supply circuit connected with the main power supply circuit, and an intelligent power supply switching circuit simultaneously connected with the main power supply circuit and the standby power supply circuit; the main power supply circuit comprises a transformer T1, a diode bridge rectifier U1, a triode Q1, a triode Q2, a triode Q3, a triode Q4, a capacitor C1 connected between the positive output end and the negative output end of the diode bridge rectifier U1 in series, a zener diode D1 with the P pole connected with the negative output end of the diode bridge rectifier U1 and the N pole connected with the positive input end of the diode bridge rectifier U1 after passing through a resistor R1, a resistor R2 with one end connected with the emitter of the triode Q1 and the other end connected with the P pole of the zener diode D1, a capacitor C2 with one end connected with the positive output end of the diode bridge rectifier U1 and the other end connected with the collector of the triode Q1, a zener diode D2 with the N pole connected with the positive output end of the diode U1 and the P pole connected with the emitter of the triode Q4, and a zener diode D67 2 with one end connected with the P pole of the zener diode, A resistor R3 with the other end connected with the emitter of the triode Q3, a capacitor C3 with one end connected with the base of the triode Q4 and the other end connected with the collector of the triode Q3, a slide rheostat RP1 with the slide end connected with the base of the triode Q4, one end connected with the N pole of the zener diode D2 after passing through the resistor R4 and the other end connected with the emitter of the triode Q3 after passing through the resistor R5, and a capacitor C4 with one end connected with the N pole of the zener diode D2 and the other end connected with the emitter of the triode Q3.
2. The intelligent dual-power transfer switch of claim 1, wherein: the primary side inductance coil of the transformer T1 is connected with 220V alternating current as the power input end of the circuit, two ends of the secondary side inductance coil of the transformer T1 are respectively connected with two power input ends of a diode bridge rectifier U1, the collector of a triode Q1 is simultaneously connected with the base of a triode Q2 and the collector of a triode Q4, the collector of a triode Q2 is connected with the collector of a triode Q3, and the emitter of the triode Q2 is connected with the base of a triode Q3.
3. The intelligent dual-power transfer switch of claim 2, wherein: the standby power supply circuit consists of a diode D4 and a storage battery pack N with the anode connected with the N pole of a diode D4; the P pole of the diode D4 is connected with the N pole of the voltage stabilizing diode D2, and the negative pole of the storage battery N is connected with the emitting electrode of the triode Q3.
4. The intelligent dual-power transfer switch of claim 3, wherein: the storage battery pack N is composed of at least one 1.2V rechargeable battery.
5. The intelligent dual-power transfer switch of claim 4, wherein: the power supply intelligent switching circuit consists of a relay K, a normally open switch K-1 of the relay K, a normally closed switch K-2 of the relay K, a diode D3 with a P pole connected with one end of the relay K and an N pole connected with one end of the normally open switch K-1 of the relay K after passing through a resistor R6, and a resistor R7 with one end connected with the N pole of a diode D3 and the other end connected with one end of the normally closed switch K-2 of the relay K; the other end of the relay K and the other end of the normally open switch K-1 of the relay K are connected with the P pole of the diode D4, and the other end of the normally closed switch K-2 of the relay K is connected with the N pole of the diode D4.
6. The intelligent dual-power transfer switch of claim 5, wherein: and the N pole of the diode D3 and the negative pole of the storage battery pack N form a power supply output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020793239.XU CN212210594U (en) | 2020-05-14 | 2020-05-14 | Intelligent dual-power transfer switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020793239.XU CN212210594U (en) | 2020-05-14 | 2020-05-14 | Intelligent dual-power transfer switch |
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| Publication Number | Publication Date |
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| CN212210594U true CN212210594U (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020793239.XU Active CN212210594U (en) | 2020-05-14 | 2020-05-14 | Intelligent dual-power transfer switch |
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| CN (1) | CN212210594U (en) |
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- 2020-05-14 CN CN202020793239.XU patent/CN212210594U/en active Active
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