CN113285425A - Rectifier with protection function - Google Patents
Rectifier with protection function Download PDFInfo
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- CN113285425A CN113285425A CN202110838580.1A CN202110838580A CN113285425A CN 113285425 A CN113285425 A CN 113285425A CN 202110838580 A CN202110838580 A CN 202110838580A CN 113285425 A CN113285425 A CN 113285425A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/125—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers
- H02H7/1252—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for rectifiers responsive to overvoltage in input or output, e.g. by load dump
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/06—Arrangements for supplying operative power
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Abstract
The invention discloses a rectifier with a protection function, which relates to the field of rectifiers, and comprises: the commercial power supply module is used for supplying 220V alternating current; the voltage reduction module is used for converting 220V alternating current into low-voltage alternating current; the rectification filtering module is used for converting low-voltage alternating current into low-voltage direct current; the overvoltage detection module is used for detecting whether the low-voltage alternating current exceeds a threshold value, and controlling the commercial power supply control module to be conducted when the low-voltage alternating current exceeds the threshold value; the battery module is used as a power supply of the commercial power supply control module; compared with the prior art, the invention has the beneficial effects that: the invention detects the input voltage through the transient suppression diode, the transient suppression diode conducts the silicon controlled rectifier when the voltage is overlarge, the relay is controlled to be conducted through the silicon controlled rectifier to disconnect the power supply line of the commercial power supply, and meanwhile, the battery is used as the power supply of the relay, thereby meeting the long-time power supply requirement and effectively preventing the alternating voltage from damaging the circuit.
Description
Technical Field
The invention relates to the field of rectifiers, in particular to a rectifier with a protection function.
Background
The rectifier is a device for converting alternating current into direct current, and can be used for a power supply device, detecting a radio signal and the like. The commercial power supply is generally 220V ac, and when many electric appliances are used, the 220V ac is usually firstly reduced in voltage and then converted into low-voltage dc by a rectifier to be supplied to the electric appliances.
Because the rectifier converts alternating current into direct current, the voltage of its input end generally is the alternating current of sine wave, and its voltage variation range is great, and when the mains voltage fluctuation became big, the sine wave voltage fluctuation range was bigger, probably caused the rectifier to damage, situation 1: the rectifier is disconnected, and only the rectifier is damaged; condition 2: the rectifier does not have a rectification function after being damaged, and the circuit is still conducted, so that the electric appliance is damaged due to the fact that alternating current is input into the electric appliance; therefore, improvements are needed.
Disclosure of Invention
The present invention is directed to a rectifier with protection function to solve the above problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a rectifier having a protection function, comprising:
the commercial power supply module is used for supplying 220V alternating current;
the voltage reduction module is used for converting 220V alternating current into low-voltage alternating current;
the rectification filtering module is used for converting low-voltage alternating current into low-voltage direct current;
the overvoltage detection module is used for detecting whether the low-voltage alternating current exceeds a threshold value, and controlling the commercial power supply control module to be conducted when the low-voltage alternating current exceeds the threshold value;
the battery module is used as a power supply of the commercial power supply control module;
the delay module is used for outputting the voltage corresponding to the battery module to the battery voltage detection module in a delayed manner;
the battery voltage detection module is used for judging whether the battery module needs to be stopped charging according to the voltage input by the time delay module;
the commercial power supply control module is used for disconnecting the commercial power supply;
the output end of the mains supply module is connected with the input end of the voltage reduction module, the first output end of the voltage reduction module is connected with the first input end of the rectification filter module, the second output end of the voltage reduction module is connected with the input end of the overvoltage detection module, the output end of the rectification filter module is connected with the input end of the battery module, the first output end of the battery module is connected with the input end of the delay module, the output end of the delay module is connected with the input end of the battery voltage detection module, the output end of the battery voltage detection module is connected with the second input end of the rectification filter module, the second output end of the battery module is connected with the second input end of the mains supply control module, the output end of the overvoltage detection module is connected with the first input end of the mains supply control module, and the output end of the mains supply control module is connected with the input end of the mains supply module.
As a still further scheme of the invention: the mains supply module comprises a live wire, a zero wire and a second switch, the live wire is connected with the second switch, the other end of the second switch is connected with one end of the input end of the voltage reduction module, and the zero wire is connected with the other end of the input end of the voltage reduction module.
As a still further scheme of the invention: the utility power supply control module comprises a controlled silicon, a fourth diode, a second relay and a second diode, wherein the anode of the fourth diode is connected with the second output end of the battery module, the cathode of the fourth diode is connected with the anode of the controlled silicon, the control electrode of the controlled silicon is connected with the output end of the overvoltage detection module, the cathode of the controlled silicon is connected with the cathodes of the second relay and the second diode, the other end of the second relay is grounded, and the anode of the second diode is connected with the other end of the second relay.
As a still further scheme of the invention: the voltage reduction module comprises a transformer, the input end of the transformer is connected with the mains supply module, and the output end of the transformer is connected with the first input end of the rectification filter module and the input end of the overvoltage detection module.
As a still further scheme of the invention: the rectifying and filtering module comprises a rectifier, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a first inductor, a first triode, a second triode, a first resistor, a second resistor and a fifth diode, wherein the fourth end of the rectifier is connected with one end of the output end of the voltage reduction module, the second end of the rectifier is connected with the other end of the output end of the voltage reduction module, the first end of the rectifier is connected with the negative electrodes of the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor and the fifth diode, the third end of the rectifier is connected with the other end of the first capacitor, the first inductor, the collector of the first triode and the collector of the second triode, the other end of the first inductor is connected with the other end of the second capacitor and the base of the first triode, the emitter of the first triode is connected with the other end of the third capacitor and the first resistor, and the other end of the first resistor is connected with the other end of the fourth capacitor, And the emitter of the second triode is connected with the other end of the fifth capacitor and the second resistor, and the other end of the second resistor is connected with the anode of the fifth diode and the input end of the battery module.
As a still further scheme of the invention: the overvoltage detection module comprises a transient suppression diode and a third resistor, the cathode of the transient suppression diode is connected with the output end of the voltage reduction module, the anode of the transient suppression diode is connected with the third resistor, and the other end of the third resistor is connected with the first input end of the commercial power supply control module.
As a still further scheme of the invention: the battery module comprises a first switch and a battery, one end of the first switch is connected with the output end of the rectification filter module, and the other end of the first switch is connected with the anode of the battery.
As a still further scheme of the invention: the time delay module comprises a first potentiometer, a fourth resistor, a fifth resistor, a sixth capacitor, an adjustable precision voltage-stabilizing source and a third MOS tube, wherein one end of the first potentiometer is connected with the fifth resistor, the S pole of the third MOS tube and the first output end of the battery module, the other end of the first potentiometer is connected with the fourth resistor, the other end of the fourth resistor is connected with the sixth capacitor and the reference pole of the adjustable precision voltage-stabilizing source, the other end of the sixth capacitor is connected with the anode of the adjustable precision voltage-stabilizing source and the sixth resistor, the cathode of the adjustable precision voltage-stabilizing source is connected with the other end of the fifth resistor and the G pole of the third MOS tube, and the D pole of the third MOS tube is connected with the other end of the sixth resistor and the input end of the battery voltage detection module.
As a still further scheme of the invention: the battery voltage detection module comprises a second potentiometer, a seventh resistor, a first integrated circuit, a third diode and a first relay, one end of the second relay is connected with the output end of the delay module and the first end of the first integrated circuit, the other end of the second potentiometer is connected with the seventh resistor and the fifth end of the first integrated circuit, the other end of the seventh resistor is connected with the fourth end of the first integrated circuit, the first relay and the anode of the third diode, and the second end of the first integrated circuit is connected with the other end of the first relay and the cathode of the third diode.
Compared with the prior art, the invention has the beneficial effects that: the invention detects the input voltage through the transient suppression diode, the transient suppression diode conducts the silicon controlled rectifier when the voltage is overlarge, the relay is controlled to be conducted through the silicon controlled rectifier to disconnect the power supply line of the commercial power supply, and meanwhile, the battery is used as the power supply of the relay, thereby meeting the long-time power supply requirement and effectively preventing the alternating voltage from damaging the circuit.
Drawings
Fig. 1 is a schematic diagram of a rectifier with a protection function.
Fig. 2 is a circuit diagram of a rectifier with a protection function.
Fig. 3 is a pin diagram of the tunable precision voltage regulator TL 431.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1, a rectifier T with protection function includes:
the commercial power supply module 1 is used for supplying 220V alternating current;
the voltage reduction module 2 is used for converting 220V alternating current into low-voltage alternating current;
the rectification filtering module 3 is used for converting low-voltage alternating current into low-voltage direct current;
the overvoltage detection module 4 is used for detecting whether the low-voltage alternating current exceeds a threshold value, and controlling the commercial power supply control module 8 to be conducted when the low-voltage alternating current exceeds the threshold value;
the battery module 5 is used as a power supply of the commercial power supply control module 8;
the delay module 6 is used for outputting the voltage corresponding to the battery module 5 to the battery voltage detection module 7 in a delayed manner;
the battery voltage detection module 7 is used for judging whether the battery module 5 needs to be stopped charging according to the voltage input by the time delay module 6;
the commercial power supply control module 8 is used for disconnecting the commercial power supply;
the output end of the mains supply module 1 is connected with the input end of the voltage reduction module 2, the first output end of the voltage reduction module 2 is connected with the first input end of the rectification filter module 3, the second output end of the voltage reduction module 2 is connected with the input end of the overvoltage detection module 4, the output end of the rectification filter module 3 is connected with the input end of the battery module 5, the first output end of the battery module 5 is connected with the input end of the delay module 6, the output end of the delay module 6 is connected with the input end of the battery voltage detection module 7, the output end of the battery voltage detection module 7 is connected with the second input end of the rectification filter module 3, the second output end of the battery module 5 is connected with the second input end of the mains supply control module 8, the output end of the overvoltage detection module 4 is connected with the first input end of the mains supply control module 8, and the output end of the mains supply control module 8 is connected with the input end of the mains supply module 1.
In this embodiment, please refer to fig. 2, the commercial power module 1 includes a live line L, a neutral line N, and a second switch S2, the live line L is connected to the second switch S2, the other end of the second switch S2 is connected to one end of the input end of the voltage-reducing module 2, and the neutral line N is connected to the other end of the input end of the voltage-reducing module 2.
And the live line L and the zero line N form a power supply loop through a second switch S2, and 220V alternating current is output.
In another embodiment: the power can be supplied by any one of three-phase alternating currents matched with the zero line N. Generally, three-phase alternating current is mostly used by high-power electrical appliances in factories.
In this embodiment, referring to fig. 2, the utility power control module 8 includes a thyristor Z1, a fourth diode D4, a second relay J2, and a second diode D2, wherein an anode of the fourth diode D4 is connected to the second output terminal of the battery module 5, a cathode of the fourth diode D4 is connected to an anode of the thyristor Z1, a control electrode of the thyristor Z1 is connected to the output terminal of the overvoltage detection module 4, a cathode of the thyristor Z1 is connected to cathodes of the second relay J2 and the second diode D2, another end of the second relay J2 is grounded, and an anode of the second diode D2 is connected to another end of the second relay J2.
When the second relay J2 works, the second switch S2 springs open; when the second relay J2 does not work, the second switch S2 is closed; when the transient suppression diode TVS is turned on, the reference electrode of the thyristor Z1 is turned on, so that the thyristor Z1 is turned on, the fourth diode D4 emits light, the display circuit is over-voltage and in a protection state, the second relay J2 works, and the second switch S2 is turned off, so that the commercial power supply module 1 stops supplying power, and the circuit safety is ensured.
In another embodiment, a bidirectional thyristor can be used to replace the thyristor Z1, and in the scheme, the single-phase thyristor Z1 can meet the use requirement.
In this embodiment, referring to fig. 2, the voltage-reducing module 2 includes a transformer W, an input end of the transformer W is connected to the commercial power module 1, and an output end of the transformer W is connected to the first input end of the rectifying-filtering module 3 and the input end of the overvoltage-detecting module 4.
The transformer W reduces the low voltage of the 220V alternating current through the turns ratio at two sides, so that the low-voltage electrical appliance can work conveniently.
In another embodiment, the capacitive buck may replace the transformer W for buck, but the conversion efficiency is lower than the transformer W.
In this embodiment, referring to fig. 2, the rectifying and filtering module 3 includes a rectifier T, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a first inductor L1, a first triode V1, a second triode V2, a first resistor R1, a second resistor R2, and a fifth diode D5, wherein a fourth end of the rectifier T is connected to one end of the output end of the buck module 2, a second end of the rectifier T is connected to the other end of the output end of the buck module 2, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, and a negative electrode of a fifth diode D5, a third end of the rectifier T is connected to the other end of the first capacitor C1, a first inductor L1, a collector of the first triode V1, a collector of the second triode V2, and a collector of the other end of the first inductor L1 is connected to the second capacitor C2, The base of the first triode V1, the emitter of the first triode V1 are connected with the other end of the third capacitor C3 and the first resistor R1, the other end of the first resistor R1 is connected with the other end of the fourth capacitor C4 and the base of the second triode V2, the emitter of the second triode V2 is connected with the other end of the fifth capacitor C5 and the second resistor R2, and the other end of the second resistor R2 is connected with the positive electrode of the fifth diode D5 and the input end of the battery module 5.
The rectifier T is composed of a bridge rectifier circuit and converts alternating current into direct current, a first inductor L1, a first capacitor C1 and a second capacitor C2 form a first filter circuit for carrying out first filtering, and the effect after filtering is amplified through a triode V1; the first resistor R1, the third capacitor C3 and the fourth capacitor C4 form a second filter circuit for second filtering, and the effect after filtering is amplified through the triode V2, so that filtering effect of the capacitors and the inductors can be effectively filtered when the filtering effect is weak. The fifth diode D5 is a light emitting diode, and indicates the output voltage of the rectifying and filtering module 3 when in operation.
In another embodiment, in the rectification function of the rectification filter module 3, the rectifier T may be replaced by a half-wave rectification circuit formed by a current-limiting diode, but the half-wave rectification circuit cannot rectify the half-cycle sinusoidal alternating current. The filtering function of the rectifying and filtering module 3 can be replaced by a conventional filtering circuit, and the conventional filtering circuit has high requirements on the filtering capability of a filtering device.
In this embodiment, referring to fig. 2, the overvoltage detection module 4 includes a transient suppression diode TVS and a third resistor R3, a cathode of the transient suppression diode TVS is connected to the output terminal of the voltage reduction module 2, an anode of the transient suppression diode TVS is connected to the third resistor R3, and another end of the third resistor R3 is connected to the first input terminal of the commercial power supply control module 8.
The transient suppression diode TVS is in a high resistance state when the voltage on the transient suppression diode TVS is lower than the rated voltage and in a low resistance state when the voltage on the transient suppression diode TVS is higher than the rated voltage, and is used for detecting whether the alternating current of the mains supply module 1 after passing through the voltage reduction module 2 is too large or not, and when the alternating current is too large, the transient suppression diode TVS is conducted.
In another embodiment, a negative resistance light emitting diode may be used to replace the TVS, and when the voltage applied to the negative resistance light emitting diode exceeds the rated voltage, the voltage applied to the negative resistance light emitting diode is still the rated voltage, and the surplus voltage is supplied to the subsequent circuit.
In the embodiment, referring to fig. 2, the battery module 5 includes a first switch S1 and a battery E1, one end of the first switch S1 is connected to the output end of the rectifying and smoothing module 3, and the other end of the first switch S1 is connected to the positive electrode of the battery E1.
The rectifying and filtering module 3 charges the battery E1 through the first switch S1.
In another embodiment, an interlocked key switch may be used in place of the first switch S1, the first switch S1 being simpler than the interlocked key switch.
In this embodiment, please refer to fig. 2 and 3, the delay module 6 includes a first potentiometer RP1, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a sixth capacitor C6, an adjustable precision regulator TL, and a third MOS transistor V3, one end of the first potentiometer RP1 is connected to the fifth resistor R5, the S-pole of the third MOS transistor V3, and the first output end of the battery module 5, the other end of the first potentiometer RP1 is connected to the fourth resistor R4, the other end of the fourth resistor R4 is connected to the sixth capacitor C6 and the reference pole of the adjustable precision regulator TL, the other end of the sixth capacitor C6 is connected to the positive pole of the adjustable precision regulator TL, the sixth resistor R6, the negative pole of the adjustable precision regulator TL is connected to the other end of the fifth resistor R5, the G-pole of the third MOS transistor V3, and the D-pole of the third MOS transistor V3 is connected to the other end of the sixth resistor R6, and the input end of the battery voltage detection module.
The voltage of the battery E1 is the sum of the voltages of the first potentiometer RP1, the fourth resistor R4 and the sixth capacitor C6, in the charging process of the battery E1, the voltage of the sixth capacitor C6 is gradually increased, so that the reference voltage of the adjustable precision voltage-stabilizing source TL is increased, the negative voltage of the controllable precision voltage-stabilizing source TL is decreased until the third MOS transistor V3 (PMOS transistor) is conducted, and the time from when the sixth capacitor C6 starts to store electric energy until the third MOS transistor V3 is conducted is the delay time. The resistance of the first potentiometer RP1 can be adjusted to adjust the charging time of the capacitor C6.
In another embodiment, a delay circuit formed by a 555 timer may be selected to replace the delay module 6, and the power supply voltage range of the 555 timer is smaller than that of the delay module 6 in the present embodiment.
In this embodiment, referring to fig. 2, the battery voltage detection module 7 includes a second potentiometer RP2, a seventh resistor R7, a first integrated circuit U1, a third diode D3, and a first relay J1, wherein one end of the second relay J2 is connected to the output end of the delay module 6 and the first end of the first integrated circuit U1, the other end of the second potentiometer RP2 is connected to the seventh resistor R7 and the fifth end of the first integrated circuit U1, the other end of the seventh resistor R7 is connected to the fourth end of the first integrated circuit U1, the first relay J1 and the anode of the third diode D3, and the second end of the first integrated circuit U1 is connected to the other end of the first relay J1 and the cathode of the third diode D3.
When the first relay J1 works, the first switch S1 springs open; when the first relay J1 does not work, the first switch S1 is closed; the model of the first integrated circuit U1 is TWH8778, the pin No. 5 of the first integrated circuit U1 is a reference voltage, when the reference voltage is larger than or equal to 1.6V, the pin No. 2 of the first integrated circuit U1 is conducted, and the first relay J1 works; when the reference voltage is less than 1.6V, the No. 2 pin of the first integrated circuit U1 is cut off, and the first relay J1 does not work;
the voltage on the battery E1 is detected through the first integrated circuit U1, the battery E1 is prevented from being overcharged, and when the voltage on the battery E1 is directly detected, the voltage on the battery E1 just reaches a measurement threshold value, the reference voltage of the first integrated circuit U1 rises to 1.6V, and the first switch S1 is immediately opened; at this time, the battery E1 continuously consumes electric energy, the reference voltage of the first integrated circuit U1 is lower than 1.6V in a short time, the first switch S1 is closed, and the first switch S1 and the first relay J1 are easily damaged when being frequently closed; therefore, the time delay circuit is matched to prolong the disconnection time of the first switch S1, so that the service life of the component is ensured, normal charging and discharging of the battery E1 can be ensured, and the capacity reduction of the battery E1 caused by too many positive charges of the positive electrode is prevented.
In another embodiment, the first integrated circuit U1 can be replaced by a zener diode to detect whether the battery E1 voltage needs to stop charging, the first integrated circuit U1 can effectively adjust the voltage of the battery E1 to stop charging by adjusting the second potentiometer RP2, and the zener diode is cumbersome to adjust the voltage of the battery E1 to stop charging.
The working principle of the invention is as follows: commercial power supply module 1 supplies with the 220V alternating current, step-down module 2 steps down the 220V alternating current, whether overvoltage detection module 4 detects the alternating voltage after stepping down and is excessive pressure, switch on commercial power supply control module 8 during excessive pressure, make commercial power supply control module 8 control commercial power supply module 1 disconnection power supply, commercial power supply control module 8 supply with voltage by battery module 5, battery module 5 supplies power through rectification filter module 3, battery module 5 prevents the overcharge through time delay module 6 and battery voltage detection module 7 when guaranteeing to charge, extension battery E1's life. The scheme can effectively prevent the electric appliance from being damaged by overlarge alternating current.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. A rectifier with a protection function is characterized in that:
this rectifier with protect function includes:
the commercial power supply module is used for supplying 220V alternating current;
the voltage reduction module is used for converting 220V alternating current into low-voltage alternating current;
the rectification filtering module is used for converting low-voltage alternating current into low-voltage direct current;
the overvoltage detection module is used for detecting whether the low-voltage alternating current exceeds a threshold value, and controlling the commercial power supply control module to be conducted when the low-voltage alternating current exceeds the threshold value;
the battery module is used as a power supply of the commercial power supply control module;
the delay module is used for outputting the voltage corresponding to the battery module to the battery voltage detection module in a delayed manner;
the battery voltage detection module is used for judging whether the battery module needs to be stopped charging according to the voltage input by the time delay module;
the commercial power supply control module is used for disconnecting the commercial power supply;
the output end of the mains supply module is connected with the input end of the voltage reduction module, the first output end of the voltage reduction module is connected with the first input end of the rectification filter module, the second output end of the voltage reduction module is connected with the input end of the overvoltage detection module, the output end of the rectification filter module is connected with the input end of the battery module, the first output end of the battery module is connected with the input end of the delay module, the output end of the delay module is connected with the input end of the battery voltage detection module, the output end of the battery voltage detection module is connected with the second input end of the rectification filter module, the second output end of the battery module is connected with the second input end of the mains supply control module, the output end of the overvoltage detection module is connected with the first input end of the mains supply control module, and the output end of the mains supply control module is connected with the input end of the mains supply module.
2. The rectifier of claim 1, wherein the commercial power module comprises a live line L, a neutral line N, and a second switch S2, the live line L is connected to the second switch S2, the other end of the second switch S2 is connected to one end of the input end of the voltage-reducing module, and the neutral line N is connected to the other end of the input end of the voltage-reducing module.
3. The rectifier with protection function as claimed in claim 2, wherein the mains control module comprises a thyristor Z1, a fourth diode D4, a second relay J2 and a second diode D2, wherein the anode of the fourth diode D4 is connected to the second output terminal of the battery module, the cathode of the fourth diode D4 is connected to the anode of a thyristor Z1, the control electrode of the thyristor Z1 is connected to the output terminal of the over-voltage detection module, the cathode of the thyristor Z1 is connected to the cathodes of the second relay J2 and the second diode D2, the other end of the second relay J2 is grounded, and the anode of the second diode D2 is connected to the other end of the second relay J2.
4. The rectifier with protection function of claim 1, wherein the voltage-reducing module comprises a transformer W, an input terminal of the transformer W is connected to the mains supply module, and an output terminal of the transformer W is connected to the first input terminal of the rectifying and filtering module and the input terminal of the overvoltage detection module.
5. The rectifier of claim 1, wherein the rectifying and filtering module comprises a rectifier T, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a first inductor L1, a first transistor V1, a second transistor V2, a first resistor R1, a second resistor R2, and a fifth diode D5, the fourth end of the rectifier T is connected to one end of the output terminal of the buck module, the second end of the rectifier T is connected to the other end of the output terminal of the buck module, the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, and the negative electrode of the fifth diode D5, the third end of the rectifier T is connected to the other end of the first capacitor C1, the first inductor L1, the collector of the first transistor V1, the collector of the second capacitor V2, and the other end of the first inductor L1 is connected to the other end of the second capacitor C2, The base of a first triode V1, the emitter of a first triode V1 is connected with the other end of a third capacitor C3 and a first resistor R1, the other end of the first resistor R1 is connected with the other end of a fourth capacitor C4 and the base of a second triode V2, the emitter of a second triode V2 is connected with the other end of a fifth capacitor C5 and a second resistor R2, and the other end of the second resistor R2 is connected with the positive electrode of a fifth diode D5 and the input end of the battery module.
6. The rectifier of claim 1, wherein the overvoltage detection module comprises a transient suppression diode TVS and a third resistor R3, a cathode of the transient suppression diode TVS is connected to the output terminal of the voltage reduction module, an anode of the transient suppression diode TVS is connected to the third resistor R3, and another end of the third resistor R3 is connected to the first input terminal of the mains control module.
7. The rectifier of claim 1, wherein the battery module comprises a first switch S1 and a battery E1, one end of the first switch S1 is connected to the output end of the rectifying and filtering module, and the other end of the first switch S1 is connected to the positive electrode of the battery E1.
8. The rectifier of claim 1, wherein the delay module comprises a first potentiometer RP1, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a sixth capacitor C6, an adjustable precision voltage regulator TL, and a third MOS transistor V3, one end of the first potentiometer RP1 is connected to the fifth resistor R5, the S-pole of the third MOS transistor V3, and the first output end of the battery module, the other end of the first potentiometer RP1 is connected to the fourth resistor R4, the other end of the fourth resistor R4 is connected to the sixth capacitor C6 and the reference pole of the adjustable precision voltage regulator TL, the other end of the sixth capacitor C6 is connected to the positive pole of the adjustable precision voltage regulator TL and the sixth resistor R6, the negative electrode of the adjustable precise voltage-stabilizing source TL is connected with the other end of the fifth resistor R5 and the G pole of the third MOS tube V3, and the D pole of the third MOS tube V3 is connected with the other end of the sixth resistor R6 and the input end of the battery voltage detection module.
9. The rectifier with protection function according to claim 1, wherein the battery voltage detection module comprises a second potentiometer RP2, a seventh resistor R7, a first integrated circuit U1, a third diode D3, a first relay J1, one end of the second relay J2 is connected to the output end of the time delay module and the first end of the first integrated circuit U1, the other end of the second potentiometer RP2 is connected to the seventh resistor R7 and the fifth end of the first integrated circuit U1, the other end of the seventh resistor R7 is connected to the fourth end of the first integrated circuit U1, the positive electrode of the first relay J1 and the positive electrode of the third diode D3, and the second end of the first integrated circuit U1 is connected to the other end of the first relay J1 and the negative electrode of the third diode D3.
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| CN113285425B (en) | 2021-11-09 |
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