Dual-power supply system

Abstract

The utility model relates to the technical field of power supply, and discloses a dual-power supply system, which comprises a main power supply module and a standby power supply module, the main power supply module is connected with the CPS controller and used for converting alternating current output by an internal coil system of the electromagnetic transmission mechanism into stable direct current suitable for working of the CPS controller and inputting the stable direct current into the CPS controller so as to supply power to the CPS controller; and the standby power supply module is respectively connected with the main power supply module and the CPS controller, and is used for converting external alternating current into stable direct current suitable for working of the CPS controller when the main power supply module is powered off, and inputting the stable direct current into the CPS controller so as to supply power to the CPS controller. According to the utility model, automatic switching and switching of the standby power supply module can be realized, and the CPS controller can work normally in any working state.

Description

TECHNICAL FIELD

[0001] The utility model relates to power supply technical field, concretely relates to a dual power supply system. BACKGROUND

[0002] In the related art, the power supply mode of the ZKB type control and protective switching device (CPS) is mainly as follows: when the device handle is in the closed position, the primary winding of the electromagnetic transmission mechanism is loaded with 220V mains power, the secondary winding end outputs 17V alternating current as the working power supply of the CPS controller, and after a series of linkages, the main circuit is connected, and the load is powered on. When a fault occurs or the load is shut down, the device handle is in the tripped or open position, the operating mechanism disconnects the coil of the electromagnetic transmission mechanism from the mains power through relevant linkages, the CPS controller is powered off, the main circuit is powered off, and the load is powered off.

[0003] However, the above power supply mode has the following disadvantages: first, when the main circuit is powered off, the CPS controller is also powered off, and when the main circuit is powered on again, it may cause the load to fail to start normally or run unstably, affecting the normal work and operation efficiency of the load; second, the CPS controller plays a safety protection role, and after being powered off, the safety performance of the load may be reduced, which poses a safety hazard; third, after the CPS controller is powered off, the difficulty of fault diagnosis increases, and more time and labor costs may be required to troubleshoot the fault problem. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model embodiment provides a dual power supply system to solve the technical problem of simultaneous power off of the main circuit and the CPS controller when the device handle is in the tripped or open position in the related art.

[0005] The utility model provides a dual power supply system, the system includes: main power supply module, spare power supply module,

[0006] The main power supply module is connected with the CPS controller, is used for converting alternating current output by the coil system in the electromagnetic transmission mechanism into stable direct current suitable for the work of the CPS controller, and inputting the stable direct current into the CPS controller to supply power to the CPS controller;

[0007] The spare power supply module is connected with the main power supply module and the CPS controller respectively, is used for converting external alternating current into stable direct current suitable for the work of the CPS controller when the main power supply module is powered off, and inputting the stable direct current into the CPS controller to supply power to the CPS controller.

[0008] In an alternative embodiment, the main power supply module is further connected with the communication module, for converting the AC power outputted by the coil system inside the electromagnetic transmission mechanism into stable DC power suitable for the working of the communication module, and inputting the stable DC power into the communication module to power the communication module;

[0009] The backup power supply module is further connected with the communication module, for converting the external AC power into stable DC power suitable for the working of the communication module when the main power supply module is powered off, and inputting the stable DC power into the communication module to power the communication module.

[0010] In an alternative embodiment, the main power supply module comprises a first input terminal, a first rectifier unit, a first filter unit, a voltage stabilizing unit and a second filter unit.

[0011] The first input terminal is connected with the output terminal of the coil system inside the electromagnetic transmission mechanism, for obtaining the AC power outputted by the coil system inside the electromagnetic transmission mechanism.

[0012] The first rectifier unit is connected with the first input terminal, for converting the AC power outputted by the coil system inside the electromagnetic transmission mechanism into DC power.

[0013] The first filter unit is connected with the first rectifier unit, for filtering the DC power.

[0014] The voltage stabilizing unit is connected with the first filter unit, for converting the filtered DC power into DC power suitable for the working of the CPS controller or the communication module.

[0015] The second filter unit is connected with the voltage stabilizing unit, for performing secondary filtering on the DC power suitable for the working of the CPS controller or the communication module to obtain stable DC power suitable for the working of the CPS controller or the communication module.

[0016] In an alternative embodiment, the backup power supply module comprises a second input terminal, a second rectifier unit, a power switching unit, a first filter unit, a voltage stabilizing unit and a second filter unit.

[0017] The second input terminal is used for obtaining external AC power.

[0018] The second rectifier unit is connected with the second input terminal, for converting the external AC power into DC power.

[0019] The power switching unit is connected with the second rectifier unit and the first filter unit respectively, for outputting the DC power to the first filter unit.

[0020] The first filter unit is configured to filter the direct current output by the power switching unit.

[0021] The voltage stabilizing unit is connected with the first filter unit and is configured to convert the filtered direct current into direct current suitable for the operation of the CPS controller or the communication module.

[0022] The second filter unit is connected with the voltage stabilizing unit and is configured to perform secondary filtering on the direct current suitable for the operation of the CPS controller or the communication module to obtain stable direct current suitable for the operation of the CPS controller or the communication module.

[0023] In an optional embodiment, the first input terminal comprises a first power input interface terminal; and the first rectifying unit comprises a first rectifying bridge and a first diode.

[0024] The first power input interface terminal is connected with an output end of an internal coil system of the electromagnetic transmission mechanism, a first pin and a second pin of the first rectifying bridge respectively; a third pin of the first rectifying bridge is connected with one end of the first diode; the other end of the first diode and a fourth pin of the first rectifying bridge are connected with the first filter unit; and the fourth pin of the first rectifying bridge is directly grounded.

[0025] The second input terminal comprises a second power input interface terminal; and the second rectifying unit comprises a second rectifying bridge.

[0026] The second power input interface terminal is connected with an external alternating current output end, a first pin and a second pin of the second rectifying bridge; a third pin and a fourth pin of the second rectifying bridge are connected with the power switching unit; and the fourth pin of the first rectifying bridge is also directly grounded.

[0027] In an optional embodiment, the first filter unit comprises a first capacitor and a second capacitor.

[0028] One end of the first capacitor is connected with the other end of the first diode and one end of the second capacitor; the other end of the first capacitor is connected with the fourth pin of the first rectifying bridge and the other end of the second capacitor respectively and is directly grounded; and both ends of the first capacitor and both ends of the second capacitor are also connected with the voltage stabilizing unit.

[0029] In an optional embodiment, the voltage stabilizing unit comprises a three-terminal voltage stabilizer, a first resistor and a second resistor.

[0030] The Vin end of the three-terminal voltage stabilizer is connected with one end of the first capacitor, one end of the second capacitor and the other end of the first diode; the ADJ end of the three-terminal voltage stabilizer is connected with one end of the first resistor and one end of the second resistor respectively, and the other end of the second resistor is connected with the Vout end of the three-terminal voltage stabilizer and the second filter circuit respectively; the other end of the first resistor is connected with the second filter circuit, the other end of the first capacitor, the other end of the second capacitor, the fourth pin of the first rectifier bridge and the ground directly.

[0031] In an alternative embodiment, the second filter unit comprises a third capacitor, a fourth capacitor and a third resistor.

[0032] One end of the third capacitor is connected with the Vout end of the three-terminal voltage stabilizer, the other end of the second resistor, one end of the fourth capacitor and one end of the third resistor respectively, and the other end of the third capacitor is connected with the other end of the fourth capacitor, the other end of the third resistor, the other end of the first resistor, the other end of the first capacitor, the other end of the second capacitor and the fourth pin of the first rectifier bridge directly and grounded.

[0033] In an alternative embodiment, the power switching unit comprises a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first NPN transistor, a second NPN transistor, a fifth capacitor and a second diode.

[0034] The emitter of the second NPN transistor is connected with the third pin of the second rectifier bridge and one end of the fourth resistor respectively, the base of the second NPN transistor is connected with the other end of the fourth resistor and one end of the fifth resistor respectively, the other end of the fifth resistor is connected with the collector of the first NPN transistor, the collector of the second NPN transistor is connected with one end of the second diode, the other end of the second diode is connected with one end of the first diode, the base of the first NPN transistor is connected with one end of the sixth resistor, the other end of the sixth resistor is connected with one end of the seventh resistor and one end of the eighth resistor respectively, the other end of the seventh resistor is connected with one end of the fifth capacitor, the emitter of the first NPN transistor is connected with the first pin of the second rectifier bridge, the other end of the eighth resistor and the other end of the fifth capacitor directly and grounded, and one end of the seventh resistor and one end of the fifth capacitor are also connected with the other end of the first diode.

[0035] From the above technical solutions, the utility model has the following advantages:

[0036] The utility model embodiment increases the standby power supply module as the standby power supply on the basis that the main power supply module is used as the main power supply to supply power to the CPS controller, when the main power supply module is disconnected due to the main circuit failure or load shutdown state, the standby power supply module is automatically switched and put into, ensures that the CPS controller can work normally under any working state, avoids the problems of data loss, other equipment failure, security risks and the like caused by the power failure of the CPS controller, greatly improves the reliability and stability of the equipment, and simultaneously reduces the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0038] Figure 1 It is a structure schematic diagram of a dual power supply system provided by the utility model embodiment.

[0039] Figure 2 It is a circuit principle diagram of the main power supply module provided by the utility model embodiment.

[0040] Figure 3 It is a partial circuit principle diagram of the standby power supply module provided by the utility model embodiment.

[0041] BRIEF DESCRIPTION OF DRAWINGS

[0042] 1, main power supply module;101, first input terminal;102, first rectifier unit;103, first filter unit;104, voltage stabilizing unit;105, second filter unit;2, standby power supply module;201, second input terminal;202, second rectifier unit;203, power supply switching unit;P1, first power input interface terminal;P2, second power input interface terminal;D2, second rectifier bridge;VD9, first diode;VD8, second diode;C1, first capacitor;C2, second capacitor;C3, third capacitor;C4, fourth capacitor;C19, fifth capacitor;IC1, three-terminal voltage regulator;R26, first resistor;R27, second resistor;R1, third resistor;R28, fourth resistor;R32, fifth resistor;R29, sixth resistor;R30, seventh resistor;R31, eighth resistor;Q1, first NPN triode;Q2, second NPN triode. DETAILED DESCRIPTION

[0043] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0044] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements, it can be wireless connection, or it can be wired connection. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0047] The embodiment of the present application provides a dual power supply system, which is suitable for providing stable power supply for various electronic devices, and is especially suitable for providing stable power supply for a CPS controller in a ZKB type control and protective switching device (CPS for short).

[0048] Figure 1 The structure diagram of a dual power supply system according to the embodiment of the present application is shown in FIG. Figure 1 As shown in FIG. 1, the embodiment of the present application provides a dual power supply system, which comprises a main power supply module 1 and a backup power supply module 2.

[0049] Specifically, the main power supply module 1 is connected with the CPS controller, the main power supply module 1 is used for converting alternating current output by a coil system in the electromagnetic transmission mechanism into stable direct current suitable for the CPS controller to work, and inputting the stable direct current into the CPS controller to supply power to the CPS controller. The standby power supply module 2 is connected with the main power supply module and the CPS controller respectively, the standby power supply module 2 is used for converting external alternating current into stable direct current suitable for the CPS controller to work when the main power supply module 1 is powered off, and inputting the direct current into the CPS controller to supply power to the CPS controller.

[0050] The alternating current output by the coil system in the electromagnetic transmission mechanism is used to provide power input for the main power supply module 1, and can be alternating current output by a secondary winding end of the coil of the electromagnetic transmission mechanism when the device handle is in a closed position. In an example, when the device handle is in the closed position, a primary winding of the coil of the electromagnetic transmission mechanism can be selectively loaded with multiple voltages such as AV220V, AC380V or DC36V, and the secondary winding end outputs alternating current of about 17V.

[0051] The external alternating current is used to provide power input for the standby power supply module 2, and can be alternating current or direct current of about 12V from an external industrial alternating current source.

[0052] The main power supply module 1 normally supplies power to the CPS controller in a normal working state of the main circuit and the load.

[0053] When the main circuit fails or the load is in a shutdown state, the main power supply module 1 is disconnected. At this time, the dual power supply system can automatically switch to the standby power supply module 2 to supply power to the CPS controller.

[0054] The utility model embodiment increases the standby power supply module as the standby power supply on the basis of the main power supply module as the main power supply to supply power to the CPS controller, when the main power supply module is disconnected due to the failure of the main circuit or the shutdown state of the load, the standby power supply module is automatically switched and put into, ensures that the CPS controller can normally work in any working state, avoids the problems of data loss, other equipment failure, safety hidden trouble and the like caused by the power failure of the CPS controller, greatly improves the reliability and stability of the equipment, and reduces the maintenance cost.

[0055] In an alternative embodiment, the main power supply module 1 is also connected with the communication module, and the main power supply module 1 is used to convert the alternating current output by the coil system inside the electromagnetic transmission mechanism into stable direct current suitable for the working of the communication module, and input the stable direct current into the communication module to supply power to the communication module. The backup power supply module 2 is also connected with the communication module, and the backup power supply module 2 is used to convert the external alternating current into stable direct current suitable for the working of the communication module when the main power supply module 1 is powered off, and input the stable direct current into the communication module to supply power to the communication module.

[0056] The communication module is used for information interaction between the CPS controller and the upper computer. The upper computer can send control instructions to the CPS controller through the communication module to set parameters of each module in the CPS or perform related operations on the CPS. The CPS controller can also feed back related information to the upper computer through the communication module to realize real-time monitoring of the parameters and working states of each module in the CPS by the upper computer.

[0057] The utility model embodiment increases the backup power supply module as the backup power supply on the basis of the main power supply module as the main power supply for supplying power to the communication module. When the main power supply module is disconnected due to the failure of the main circuit or the load shutdown state, the backup power supply module automatically switches and is put into operation, realizes the continuous communication state between the CPS control and the upper computer, ensures that the upper computer can monitor the states and parameters of the CPS controller and other modules in the CPS in any working state, is favorable to the troubleshooting and maintenance of the relevant equipment by the background personnel, and makes the equipment can continuously and safely and reliably work.

[0058] In an alternative embodiment, as shown in Figure 2 The main power supply module 1 comprises a first input terminal 101, a first rectifier unit 102, a first filter unit 103, a voltage stabilizing unit 104 and a second filter unit 105.

[0059] Specifically, the first input terminal 101 is connected with the output terminal of the internal coil system of the electromagnetic transmission mechanism, and is used to obtain the alternating current output by the internal coil system of the electromagnetic transmission mechanism; the first rectifying unit 102 is connected with the first input terminal 101, and is used to convert the alternating current output by the internal coil system of the electromagnetic transmission mechanism into direct current; the first filtering unit 103 is connected with the first rectifying unit 102, and is used to filter the direct current; the voltage stabilizing unit 104 is connected with the first filtering unit 103, and is used to convert the filtered direct current into direct current suitable for the working of the CPS controller or the communication module; and the second filtering unit 105 is connected with the voltage stabilizing unit 104, and is used to perform secondary filtering on the direct current suitable for the working of the CPS controller or the communication module, so as to obtain stable direct current suitable for the working of the CPS controller or the communication module.

[0060] In an alternative embodiment, as shown in FIG. 2, the backup power supply module 2 comprises a second input terminal 201, a second rectifying unit 202, a power supply switching unit 203, the first filtering unit 103, the voltage stabilizing unit 104 and the second filtering unit 105. Figure 3

[0061] Specifically, the second input terminal 201 is used to obtain external alternating current; the second rectifying unit 202 is connected with the second input terminal 201, and is used to convert the external alternating current into direct current; the power supply switching unit 203 is connected with the second rectifying unit 202 and the first filtering unit 103 respectively, and is used to output the direct current to the first filtering unit 103; the first filtering unit 103 is used to filter the direct current output by the power supply switching unit 203; the voltage stabilizing unit 104 is connected with the first filtering unit 103, and is used to convert the filtered direct current into direct current suitable for the working of the CPS controller or the communication module; and the second filtering unit 105 is connected with the voltage stabilizing unit 104, and is used to perform secondary filtering on the direct current suitable for the working of the CPS controller or the communication module, so as to obtain stable direct current suitable for the working of the CPS controller or the communication module.

[0062] It should be noted that the first filtering unit 103, the voltage stabilizing unit 104 and the second filtering unit 105 are common circuit parts of the main power supply module 1 and the backup power supply module 2.

[0063] ​In the main circuit, the load is in normal working state, the main power supply module 1 obtains the alternating current output by the coil system inside the electromagnetic transmission mechanism, rectifies, filters, stabilizes and filters again the alternating current output by the coil system inside the electromagnetic transmission mechanism, obtains the stable direct current suitable for the working of the CPS controller or the communication module, and then supplies power to the CPS controller and the communication module. When the main circuit fails or the load is in a shutdown state, the main power supply module 1 is disconnected, that is, the first rectifier unit 102 and the first filter unit 103 are disconnected, at this time, the second input terminal 201, the second rectifier unit 202 and the power switching unit 203 of the standby power supply module 2 are connected to the output end of the first filter unit 103, the external alternating current is rectified, filtered, stabilized and filtered again, the stable direct current suitable for the working of the CPS controller or the communication module is obtained, and then the CPS controller and the communication module are powered, thereby realizing the automatic switching of the dual power supply system.

[0064] In an alternative embodiment, as shown in Figure 2 and Figure 3 The first input terminal 101 includes a first power input interface terminal P1, and the first rectifier unit 102 includes a first rectifier bridge D1 and a first diode VD9.

[0065] The first power input interface terminal P1 is connected with the output end of the coil system inside the electromagnetic transmission mechanism, the first pin and the second pin of the first rectifier bridge D1, the third pin of the first rectifier bridge D1 is connected with one end of the first diode VD9, the other end of the first diode VD9 and the fourth pin of the first rectifier bridge D1 are connected with the first filter unit 103, and the fourth pin of the first rectifier bridge D1 is directly grounded.

[0066] The input ends of the first power input interface terminal P1 are connected with the output ends of the coil system inside the electromagnetic transmission mechanism, which can be used as the power input of the main power supply module 1.

[0067] In an alternative embodiment, the first output port of the first power input interface terminal P1 is connected with the second pin of the first rectifier bridge D1, and the second output port of the first power input interface terminal P1 is connected with the first pin of the first rectifier bridge D1.

[0068] The second input terminal 201 includes a second power input interface terminal P2, and the second rectifier unit 202 includes a second rectifier bridge D2;

[0069] The second power input interface terminal P2 is connected with the output end of the external alternating current, the first pin and the second pin of the second rectifier bridge, the third pin and the fourth pin of the second rectifier bridge are connected with the power switching unit 203, and the fourth pin of the first rectifier bridge is also directly grounded.

[0070] The input ends of the second power input interface terminal P2 are connected to the output ends of an external industrial AC power supply, and can be used as the power input for the backup power supply module 2.

[0071] In one alternative implementation, the first output port of the second power input interface terminal P2 is connected to the second pin of the second rectifier bridge D2, and the second output port of the second power input interface terminal P2 is connected to the first pin of the second rectifier bridge D2.

[0072] In one alternative implementation, such as Figure 2 As shown, the first filter unit 103 includes: a first capacitor C1 and a second capacitor C2;

[0073] One end of the first capacitor C1 is connected to the other end of the first diode VD9 and one end of the second capacitor C2. The other end of the first capacitor C1 is connected to the fourth pin of the first rectifier bridge D1 and the other end of the second capacitor C2 and is directly grounded. Both ends of the first capacitor C1 and the second capacitor C2 are also connected to the voltage regulator unit 104.

[0074] Wherein, the first capacitor C1 is preferably an electrolytic capacitor, and the second capacitor C2 is preferably a regular capacitor.

[0075] In one alternative implementation, such as Figure 2 As shown, the voltage regulator unit 104 includes: a three-terminal voltage regulator IC1, a first resistor R26, and a second resistor R27;

[0076] The Vin terminal (input terminal) of the three-terminal regulator IC1 is connected to one end of the first capacitor C1, one end of the second capacitor C2, and the other end of the first diode VD9. The ADJ terminal (adjustment terminal) of the three-terminal regulator IC1 is connected to one end of the first resistor R26 and one end of the second resistor R27. The other end of the second resistor R27 is connected to the Vout terminal (output terminal) of the three-terminal regulator IC1 and the second filter unit 105. The other end of the first resistor R26 is connected to the second filter unit 105, the other end of the first capacitor C1, the other end of the second capacitor C2, and the fourth pin of the first rectifier bridge and is directly grounded.

[0077] In one alternative implementation, such as Figure 2 As shown, the second filter unit 105 includes: a third capacitor C3, a fourth capacitor C4, and a third resistor R1;

[0078] One end of the third capacitor C3 is connected with the Vout end of the three-terminal voltage regulator IC1, the other end of the second resistor R27, one end of the fourth capacitor C4 and one end of the third resistor R1 respectively, as the working power supply of the CPS controller and the communication module; the other end of the third capacitor C3 is connected with the other end of the fourth capacitor C4, the other end of the third resistor R1, the other end of the first resistor R26, the other end of the first capacitor C1, the other end of the second capacitor C2 and the fourth pin of the first rectifier bridge D1 respectively and grounded directly.

[0079] In an alternative embodiment, as shown in Figure 3 Figure 3 The power switching unit 203 includes a fourth resistor R28, a fifth resistor R32, a sixth resistor R29, a seventh resistor R30, an eighth resistor R31, a first NPN transistor Q1, a second NPN transistor Q2, a fifth capacitor C19 and a second diode VD8.

[0080] The emitter of the second NPN transistor Q2 is connected with the third pin of the second rectifier bridge D2 and one end of the fourth resistor R28 respectively, the base of the second NPN transistor Q2 is connected with the other end of the fourth resistor R28 and one end of the fifth resistor R32 respectively, the other end of the fifth resistor R32 is connected with the collector of the first NPN transistor Q1, the collector of the second NPN transistor Q2 is connected with one end of the second diode VD8, the other end of the second diode VD8 is connected with one end of the first diode VD9, for switching the standby power supply module 2 as the input working power supply, the base of the first NPN transistor Q1 is connected with one end of the sixth resistor R29, the other end of the sixth resistor R29 is connected with one end of the seventh resistor R30 and one end of the eighth resistor R31 respectively, the other end of the seventh resistor R30 is connected with one end of the fifth capacitor C19, the emitter of the first NPN transistor Q1 is connected with the first pin of the second rectifier bridge D2, the other end of the eighth resistor R31 and the other end of the fifth capacitor C19 respectively and grounded directly, one end of the seventh resistor R30 and the fifth capacitor C19 are also connected with the other end of the first diode VD9.

[0081] In an alternative embodiment, the cathode of the second diode VD8 is connected with the cathode of the first diode VD9, one end of the seventh resistor R30 and the fifth capacitor C19 are also connected with the anode of the first diode VD9.

[0082] The working principle of the automatic switching of the standby power supply module is described as follows:

[0083] The main power supply module is put into: the power output by the secondary winding of the coil in the electromagnetic transmission mechanism is used as the main power supply of the CPS controller, and after a direct current voltage output by the first rectifier bridge D1, the direct current voltage acts on the eighth resistor R31 (also called a sampling resistor) in the standby power supply module, and after a certain current flows through the base of the first NPN triode Q1, the first NPN triode Q1 is turned on; the external industrial alternating current power supply is obtained by the standby power supply module, and after a direct current voltage output by the second rectifier bridge D2, the direct current voltage acts on the emitter of the second NPN triode Q2, at this time, the base current of the second NPN triode Q2 is small and insufficient to turn on the second NPN triode Q2, and the cathode of the second diode VD8 has no voltage output, at this time, the voltage at the input end (Vin end) of the three-terminal voltage regulator IC1 is only from the main power supply module, and then after filtering, voltage regulation, and secondary filtering, the CPS controller and the communication module are provided with stable and reliable working power supply.

[0084] The main power supply module is disconnected, and the standby power supply module is put into: when the main power supply module is disconnected, the eighth resistor R31, that is, the sampling resistor, has no voltage between the two ends, and the base of the first NPN triode Q1 has no current, so the first NPN triode Q1 is not turned on, and the above-mentioned standby power supply module is rectified by the second rectifier bridge D2 to output a direct current voltage, and then the direct current voltage acts on the emitter of the second NPN triode Q2, at this time, a certain current flows through the base of the second NPN triode Q2 to turn on the second NPN triode Q2, and the cathode of the second diode VD8 outputs a voltage, at this time, the voltage at the input end (Vin end) of the three-terminal voltage regulator IC1 is only from the standby power supply module, and then after filtering, voltage regulation, and secondary filtering, the CPS controller and the communication module are provided with stable and reliable working power supply, so as to achieve the purpose of continuous work.

[0085] In summary, in the embodiment of the utility model, the main power supply module is used as the main power supply to supply power to the CPS controller, and the standby power supply module is added as the standby power supply, when the main circuit fails or the main power supply module is disconnected due to load shutdown, the standby power supply module is automatically switched and put into, so that the CPS controller can work normally in any working state, the problems of data loss, other equipment failure, and safety hazards caused by power failure of the CPS controller are avoided, the reliability and stability of the equipment are greatly improved, and the maintenance cost is also reduced.

[0086] Although the example embodiments and their advantages have been described in detail, those skilled in the art can make various changes, replacements and modifications to the embodiments without departing from the spirit of the utility model and the protection scope defined, and such modifications and variations fall within the scope defined.

Claims

1. A dual power supply system, characterized by comprising: The system comprises a main power supply module and a backup power supply module; The main power supply module is connected with the CPS controller and is used to convert AC power output by the coil system inside the electromagnetic transmission mechanism into stable DC power suitable for the operation of the CPS controller and input the stable DC power into the CPS controller to supply power to the CPS controller; The backup power supply module is connected with the main power supply module and the CPS controller and is used to convert external AC power into stable DC power suitable for the operation of the CPS controller when the main power supply module is powered off and input the stable DC power into the CPS controller to supply power to the CPS controller.

2. The system of claim 1, wherein, The main power supply module is also connected with a communication module and is used to convert AC power output by the coil system inside the electromagnetic transmission mechanism into stable DC power suitable for the operation of the communication module and input the stable DC power into the communication module to supply power to the communication module; The backup power supply module is also connected with the communication module and is used to convert external AC power into stable DC power suitable for the operation of the communication module when the main power supply module is powered off and input the stable DC power into the communication module to supply power to the communication module.

3. The system of claim 2, wherein, The main power supply module comprises a first input terminal, a first rectifier unit, a first filter unit, a voltage stabilizing unit and a second filter unit; The first input terminal is connected with an output terminal of the coil system inside the electromagnetic transmission mechanism and is used to obtain AC power output by the coil system inside the electromagnetic transmission mechanism; The first rectifier unit is connected with the first input terminal and is used to convert the AC power output by the coil system inside the electromagnetic transmission mechanism into DC power; The first filter unit is connected with the first rectifier unit and is used to filter the DC power; The voltage stabilizing unit is connected with the first filter unit and is used to convert the filtered DC power into DC power suitable for the operation of the CPS controller or the communication module; The second filter unit is connected with the voltage stabilizing unit and is used to perform secondary filtering on the DC power suitable for the operation of the CPS controller or the communication module to obtain stable DC power suitable for the operation of the CPS controller or the communication module.

4. The system of claim 3, wherein, The backup power supply module comprises a second input terminal, a second rectifier unit, a power switching unit, a first filter unit, a voltage stabilizing unit and a second filter unit; The second input terminal is used to obtain external AC power; The second rectifier unit is connected with the second input terminal and is used to convert the external AC power into DC power; The power switching unit is connected with the second rectifier unit and the first filter unit and is used to output the DC power to the first filter unit; The first filter unit is used to filter the DC power output by the power switching unit; The voltage stabilizing unit is connected with the first filter unit and is used to convert the filtered DC power into DC power suitable for the operation of the CPS controller or the communication module; The second filter unit is connected with the voltage stabilizing unit, and is used for performing secondary filtering on the direct current suitable for the CPS controller or the communication module to work, so as to obtain stable direct current suitable for the CPS controller or the communication module to work.

5. The system of claim 4, wherein, The first input terminal comprises a first power input interface terminal; and the first rectifying unit comprises a first rectifying bridge and a first diode. The first power input interface terminal is connected with an output end of an internal coil system of the electromagnetic transmission mechanism, a first pin and a second pin of the first rectifying bridge respectively; a third pin of the first rectifying bridge is connected with one end of the first diode; the other end of the first diode and a fourth pin of the first rectifying bridge are connected with the first filter unit; and the fourth pin of the first rectifying bridge is directly grounded. The second input terminal comprises a second power input interface terminal; and the second rectifying unit comprises a second rectifying bridge. The second power input interface terminal is connected with an external alternating current output end, a first pin and a second pin of the second rectifying bridge; a third pin and a fourth pin of the second rectifying bridge are connected with the power switching unit; and the fourth pin of the first rectifying bridge is also directly grounded.

6. The system of claim 5, wherein, The first filter unit comprises a first capacitor and a second capacitor. One end of the first capacitor is connected with the other end of the first diode and one end of the second capacitor; the other end of the first capacitor is connected with the fourth pin of the first rectifying bridge and the other end of the second capacitor respectively and is directly grounded; and the two ends of the first capacitor and the two ends of the second capacitor are also connected with the voltage stabilizing unit.

7. The system of claim 6, wherein, The voltage stabilizing unit comprises a three-terminal voltage stabilizer, a first resistor and a second resistor. A Vin end of the three-terminal voltage stabilizer is connected with one end of the first capacitor, one end of the second capacitor and the other end of the first diode; an ADJ end of the three-terminal voltage stabilizer is connected with one end of the first resistor and one end of the second resistor respectively; the other end of the second resistor is connected with a Vout end of the three-terminal voltage stabilizer and a second filter circuit respectively; and the other end of the first resistor is connected with the second filter circuit, the other end of the first capacitor, the other end of the second capacitor, the fourth pin of the first rectifying bridge and is directly grounded.

8. The system of claim 7, wherein, The second filter unit comprises a third capacitor, a fourth capacitor and a third resistor. One end of the third capacitor is connected with the Vout end of the three-terminal voltage stabilizer, the other end of the second resistor, one end of the fourth capacitor and one end of the third resistor respectively; the other end of the third capacitor is connected with the other end of the fourth capacitor, the other end of the third resistor, the other end of the first resistor, the other end of the first capacitor, the other end of the second capacitor and the fourth pin of the first rectifying bridge respectively and is directly grounded.

9. The system of claim 8, wherein, The power switching unit comprises a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first NPN transistor, a second NPN transistor, a fifth capacitor and a second diode. The emitter of the second NPN triode is connected with the third pin of the second rectifier bridge and one end of the fourth resistor respectively, the base of the second NPN triode is connected with the other end of the fourth resistor and one end of the fifth resistor respectively, the other end of the fifth resistor is connected with the collector of the first NPN triode, the collector of the second NPN triode is connected with one end of the second diode, the other end of the second diode is connected with one end of the first diode, the base of the first NPN triode is connected with one end of the sixth resistor, the other end of the sixth resistor is connected with one end of the seventh resistor and one end of the eighth resistor respectively, the other end of the seventh resistor is connected with one end of the fifth capacitor, the emitter of the first NPN triode is connected with the first pin of the second rectifier bridge, the other end of the eighth resistor and the other end of the fifth capacitor and is directly grounded, and one end of the seventh resistor and the fifth capacitor are also connected with the other end of the first diode.

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