Dual-power supply power supply control system

Abstract

The utility model provides a power supply control system with double power supplies. The power supply control system comprises an execution switch unit, an execution motor, a motor switch unit, a tripping unit and an alarm switch unit, the execution switch unit is used for controlling connection and disconnection of lines between the first power supply and the load and between the second power supply and the load under the driving of the execution motor; the motor switch unit is electrically connected with the first power supply and the second power supply through the alarm switch unit, and is used for controlling the execution motor to carry out corresponding driving control according to the accessed power supply, and is disconnected after the execution motor completes the corresponding driving control; and the tripping unit is used for opening the execution switch unit and disconnecting the alarm switch unit when the power supply fails. When the tripping unit is tripped due to a power supply fault, the alarm switch unit is switched off synchronously, and at the moment, even if the motor switch unit is reset to a closed state, the fault power supply cannot be connected to the execution motor again, so that the execution motor cannot be powered on again based on the fault power supply, and the electrical risk of the execution motor is reduced.

Description

TECHNICAL FIELD

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

[0002] In the power supply scene of dual power supply, the dual power supply is usually accessed through the motor switch unit, and the motor switch unit controls the execution motor to complete the rotation in the corresponding direction according to the accessed power supply, so that the execution motor drives the corresponding execution switch unit to be in the corresponding switch state, thereby realizing the selection of a certain power supply. The motor switch unit, the execution motor and the execution switch unit can constitute an automatic switching switch to realize the purpose of controlling the power supply of the power supply after the power supply is accessed.

[0003] When the main circuit where the load is located fails, for example, the first power supply or the second power supply accessed fails, the corresponding trip unit will trip, so that the execution switch unit is reset to the double-break state, the execution motor is reset to rotate to the double-break position, and the motor switch unit is reset to the closed state. This will cause the execution motor to be powered based on the faulty power supply, increasing the electrical risk of the execution motor. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model provides a power supply control system of dual power supply.

[0005] In one embodiment, the utility model provides a power supply control system of dual power supply, the power supply control system of dual power supply includes execution switch unit, execution motor, motor switch unit, trip unit and alarm switch unit;

[0006] The execution switch unit is respectively electrically connected with the first power supply, the second power supply and the load and mechanically connected with the execution motor, and is used for opening and closing under the drive of the execution motor, controlling the on-off of the line between the first power supply and the second power supply and the load.

[0007] The motor switch unit is respectively electrically connected with the execution motor and the alarm switch unit and mechanically connected with the execution motor, is used for being electrically connected with the first power supply and the second power supply through the alarm switch unit, and is used for controlling the execution motor to drive and control correspondingly according to the first power supply or the second power supply accessed and being disconnected after the execution motor completes the corresponding drive control.

[0008] The trip unit is mechanically connected with the execution switch unit and the alarm switch unit, is used for opening the execution switch unit and disconnecting the alarm switch unit when the first power supply or the second power supply fails.

[0009] In one embodiment, the motor switch unit comprises a first motor switch unit, a second motor switch unit and a rotation unit, and the alarm switch unit comprises a first alarm switch unit and a second alarm switch unit which are mechanically connected to the tripping unit respectively;

[0010] The first access end of the first motor switch unit is configured to access the first power supply through the first alarm switch unit, and the second access end of the first motor switch unit is electrically connected to the first power supply end of the execution motor; the first access end of the second motor switch unit is configured to access the second power supply through the second alarm switch unit, and the second access end of the second motor switch unit is electrically connected to the second power supply end of the execution motor;

[0011] The rotation unit is fixedly connected to the rotating shaft of the execution motor, and is configured to control the first motor switch unit to be disconnected based on the driving of the execution motor in the first rotation direction after the execution motor accesses the first power supply through the first motor switch unit, or to control the second motor switch unit to be disconnected based on the driving of the execution motor in the second rotation direction after the execution motor accesses the second power supply through the second motor switch unit.

[0012] In one embodiment, the first motor switch unit comprises a first micro switch, the second motor switch unit comprises a second micro switch, and the rotation unit comprises a rotation dial;

[0013] The first access end of the first micro switch is configured to be electrically connected to the live wire of the first power supply through the first alarm switch unit, and the second access end of the first micro switch is configured to be electrically connected to the first live power supply end of the execution motor;

[0014] The first access end of the second micro switch is configured to be electrically connected to the live wire of the second power supply through the second alarm switch unit, and the second access end of the second micro switch is configured to be electrically connected to the second live power supply end of the execution motor;

[0015] The zero line power supply end of the execution motor is configured to be electrically connected to the zero line of the first power supply and the zero line of the second power supply respectively.

[0016] In one embodiment, the power supply control system of the dual power supply further comprises a control unit and a channel switching unit;

[0017] The first input end of the channel switching unit is configured to access the first power supply, the second input end of the channel switching unit is configured to access the second power supply, the first output end of the channel switching unit is electrically connected to the first access end of the first alarm switch unit, the second output end of the channel switching unit is electrically connected to the first access end of the second alarm switch unit, and the controlled end of the channel switching unit is electrically connected to the output end of the control unit;

[0018] The control unit is configured to control the switching state of the channel switching unit to output the first power supply to the first alarm switch unit or output the second power supply to the second alarm switch unit.

[0019] In one embodiment, the channel switching unit comprises a driving subunit and a relay;

[0020] The input end of the driving subunit is electrically connected with the output end of the control unit, the output end of the driving subunit is electrically connected with the coil part of the relay, the first input end of the contact part of the relay is used for accessing the first power supply, the second input end of the contact part of the relay is used for accessing the second power supply, the first output end of the contact part of the relay is electrically connected with the first access end of the first alarm switch unit, and the second output end of the contact part of the relay is electrically connected with the first access end of the second alarm switch unit.

[0021] In one embodiment, the driving subunit comprises a transistor and a driving chip;

[0022] The base of the transistor is electrically connected with the output end of the control unit, the collector of the transistor is electrically connected with the input end of the driving chip, the emitter of the transistor is used for grounding, and the output end of the driving chip is used for electrically connecting with the coil part of the relay.

[0023] In one embodiment, the power supply control system of the dual power supply further comprises a switching power supply unit;

[0024] The input end of the switching power supply unit is used for accessing the first power supply and / or the second power supply, and the output end of the switching power supply unit is electrically connected with the power supply end of the control unit;

[0025] The switching power supply unit is used for converting and processing the alternating current input by the first power supply or the second power supply, and outputting corresponding direct current to the control unit.

[0026] In one embodiment, the switching power supply unit comprises a pressure sensitive resistor, a rectifier diode, an input filter assembly, a switching power supply chip and an output filter assembly;

[0027] The first end of the pressure sensitive resistor is electrically connected with the anode of the rectifier diode and is used for being electrically connected with the live wire of the first power supply and / or the live wire of the second power supply, and the second end of the pressure sensitive resistor is electrically connected with the second input end of the input filter assembly and is used for being electrically connected with the zero line of the first power supply and / or the zero line of the second power supply;

[0028] The cathode of the rectifier diode is electrically connected with the first input end of the input filter assembly, the first output end of the input filter assembly is electrically connected with the input end of the switching power supply chip, the output end of the switching power supply chip is electrically connected with the first input end of the output filter assembly, and the output end of the output filter assembly is electrically connected with the power supply end of the control unit;

[0029] The second output end of the input filter assembly, the grounding end of the switching power supply chip, the second input end of the output filter assembly and the second output end of the output filter assembly are respectively used for grounding.

[0030] In one embodiment, the dual power supply control system further comprises a collection unit;

[0031] The collection unit is electrically connected with the input end of the control unit, for collecting power supply signals of the first power supply and / or the second power supply and feeding back to the control unit.

[0032] In one embodiment, the collection unit comprises a first voltage dividing resistor, a second voltage dividing resistor, a filter capacitor and a clamping device;

[0033] The first end of the first voltage dividing resistor is used for being electrically connected with the live wire of the first power supply and / or the live wire of the second power supply, and the second end of the first voltage dividing resistor is electrically connected with the first end of the filter capacitor, the first end of the clamping device and the first end of the second voltage dividing resistor respectively and used for being electrically connected with the input end of the control unit;

[0034] The second end of the filter capacitor is used for grounding, the second end of the clamping device is used for inputting a clamping voltage, and the second end of the second voltage dividing resistor is used for inputting a reference voltage.

[0035] Through the dual power supply control system, the alarm switch unit is added in series with the motor switch unit and mechanically linked with the tripping unit, when the tripping unit performs tripping action due to power failure, the alarm switch unit will be disconnected synchronously, at this time, even if the motor switch unit is reset to the closed state, the fault power supply will not be reconnected to the execution motor, so that the execution motor will not be powered on based on the fault power supply, and the electrical risk of the execution motor is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0037] Figure 1 It is a structural schematic view of the dual power supply control system in one embodiment of the present application;

[0038] Figure 2 It is a structural schematic view of the alarm switch unit and the motor switch unit in one embodiment of the present application;

[0039] Figure 3 It is a structural schematic view of the motor switch unit comprising a micro switch in one embodiment of the present application;

[0040] Figure 4 It is a structural schematic view of the dual power supply control system further comprising a channel switching unit and a control unit in one embodiment of the present application;

[0041] Figure 5 A specific circuit schematic diagram of the power supply control system of the dual power supply in an embodiment of the present application is shown in the figure;

[0042] Figure 6 A structure schematic diagram of the switching power supply unit and the acquisition unit in an embodiment of the present application is shown in the figure;

[0043] Figure 7 A specific circuit schematic diagram of the switching power supply unit in an embodiment of the present application is shown in the figure;

[0044] Figure 8 A specific circuit schematic diagram of the acquisition unit in an embodiment of the present application is shown in the figure;

[0045] Figure 9 A specific circuit schematic diagram of the first indication unit in an embodiment of the present application is shown in the figure;

[0046] Figure 10 A specific circuit schematic diagram of the second indication unit in an embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0048] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified. In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use this invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of this invention with unnecessary detail. Therefore, this invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0049] Firstly, such as Figure 1 As shown, in one embodiment, the present invention provides a dual-power supply control system, which includes an execution switch unit, an execution motor, a motor switch unit, a trip unit, and an alarm switch unit.

[0050] in, Figure 1 The solid lines shown represent the electrical connections between the components, while the dashed lines represent the mechanical connections between the components.

[0051] The actuator switch unit is used to electrically connect to the first power supply, the second power supply and the load and to mechanically connect to the actuator motor. It is used to open and close the circuit under the drive of the actuator motor and to control the connection and disconnection of the lines between the first power supply and the second power supply and the load, respectively.

[0052] When the motor is rotated in the first rotating direction after being powered on, the motor and the execution switch unit are mechanically connected, and based on the rotation of the motor, the execution switch unit can be driven to connect the circuit between the first input end and the output end, so that the power output by the first power supply is transmitted to the load. At this time, it can be understood that the closing of the power supply circuit of the first power supply is realized. Similarly, when the motor is rotated in the second rotating direction after being powered on, based on the rotation of the motor, the execution switch unit can be driven to connect the circuit between the second input end and the output end, so that the power output by the second power supply is transmitted to the load. At this time, it can be understood that the closing of the power supply circuit of the second power supply is realized.

[0053] The motor switch unit is electrically connected with the execution motor and the alarm switch unit and mechanically connected with the execution motor, is used for being electrically connected with the first power supply and the second power supply through the alarm switch unit, and is used for controlling the execution motor to perform corresponding driving control according to the accessed first power supply or second power supply and being disconnected after the execution motor completes the corresponding driving control.

[0054] When the alarm switch unit is connected, the motor switch unit can output the accessed first power supply or second power supply to the execution motor.

[0055] Specifically, the execution motor includes a first power supply end and a second power supply end. The first power supply end of the execution motor can be rotated in the first rotating direction after the power supply is accessed. The second power supply end of the execution motor can be rotated in the second rotating direction after the power supply is accessed. That is to say, the execution motor will rotate in different rotating directions according to the accessed first power supply and second power supply.

[0056] In the above process, when the motor switch unit accesses the first power supply through the alarm switch unit, the first power supply end of the execution motor can be powered on, so as to control the execution motor to rotate in the first rotating direction. Combined with the action of the execution switch unit, the closing of the power supply circuit of the first power supply can be realized, so as to realize the effective power supply of the first power supply to the load. Similarly, when the motor switch unit accesses the second power supply through the alarm switch unit, the second power supply end of the execution motor can be powered on, so as to control the execution motor to rotate in the second rotating direction. Combined with the action of the execution switch unit, the closing of the power supply circuit of the second power supply can be realized, so as to realize the effective power supply of the second power supply to the load.

[0057] It should be noted that the motor switch unit is also mechanically connected with the execution motor. The motor switch unit can be understood as a normally closed state. When the first power supply or the second power supply is accessed and output to the execution motor, the execution motor is rotated, and when the execution switch unit is closed, the motor switch unit can be driven to be disconnected, so as to avoid the continuous rotation of the execution motor, so as to realize the stability of the closing.

[0058] In summary, the execution switch unit, the execution motor, and the motor switch unit constitute the "automatic transfer switch" in the dual - power scenario, which can control the closing of the power supply circuit of the corresponding power supply according to the connected power supply.

[0059] The tripping unit is mechanically connected to the execution switch unit and the alarm switch unit respectively, and is used to trip the execution switch unit and disconnect the alarm switch unit when a fault occurs in the first power supply or the second power supply.

[0060] Among them, the tripping unit is used to implement the protection function of load power supply. When a fault occurs in the first power supply or the second power supply used to supply power to the load, it trips. Its tripping action can, based on the mechanical connection with the execution switch unit, cause the execution switch unit to switch from the closed state to the open state. As mentioned above, the execution switch unit is also mechanically connected to the execution motor, so the execution motor also rotates correspondingly. It is also mentioned above that the execution motor is also mechanically connected to the motor switch unit, so the motor switch unit also switches from the open state after closing to the closed state. If the alarm switch unit is in the conducting state at this time, the faulty power supply will be output to the execution motor through the alarm switch unit and the motor switch unit, posing a relatively high electrical risk to the execution motor.

[0061] To address the above - mentioned problem, in this embodiment, the added alarm switch unit is mechanically connected to the tripping unit and has the ability to联动. When the tripping unit performs the tripping action, it will simultaneously drive the alarm switch unit to act. After the tripping unit completes the tripping action, the alarm switch unit switches from the closed state to the open state. At this time, although the motor switch unit is in the closed state, the alarm switch unit is connected in series in the power supply circuit of the execution motor, so the faulty power supply cannot be output to the execution motor.

[0062] Through the above - mentioned dual - power supply control system, an alarm switch unit connected in series with the motor switch unit and mechanically linked with the tripping unit is added. When the tripping unit performs the tripping action due to a power supply fault, the alarm switch unit will synchronously disconnect. At this time, even if the motor switch unit resets to the closed state, the faulty power supply will not be re - connected to the execution motor, preventing the execution motor from being re - powered on based on the faulty power supply and reducing the electrical risk of the execution motor.

[0063] [[ID=IS]]As Figure 2 shown, in one embodiment, the motor switch unit includes a first motor switch unit, a second motor switch unit, and a rotating unit, and the alarm switch unit includes a first alarm switch unit and a second alarm switch unit that are respectively mechanically connected to the tripping unit.

[0064] The first access end of the first motor switch unit is used to access the first power supply through the first alarm switch unit, and the second access end of the first motor switch unit is electrically connected with the first power supply end of the execution motor; the first access end of the second motor switch unit is used to access the second power supply through the second alarm switch unit, and the second access end of the second motor switch unit is electrically connected with the second power supply end of the execution motor;

[0065] The rotation unit is fixedly connected with the rotating shaft of the execution motor, and is used to control the first motor switch unit to be disconnected based on the driving of the execution motor in the first rotation direction after the execution motor accesses the first power supply through the first motor switch unit, or is used to control the second motor switch unit to be disconnected based on the driving of the execution motor in the second rotation direction after the execution motor accesses the second power supply through the second motor switch unit.

[0066] Wherein, since the rotation unit is fixedly connected with the rotating shaft of the execution motor, when the execution motor is powered on and rotates, the rotation unit is also driven to rotate. The rotation unit has a mechanical connection relationship with the first motor switch unit and the second motor switch unit, respectively, so that when the rotation unit rotates in the first rotation direction, a mechanism on the first motor switch unit is driven to act, thereby triggering the first motor switch unit to be disconnected; similarly, when the rotation unit rotates in the second rotation direction, a mechanism on the second motor switch unit is driven to act, thereby triggering the second motor switch unit to be disconnected.

[0067] Wherein, from the above analysis, it can be known that the rotation direction of the execution motor is related to the accessed power supply, and the access of the power supply is related to the corresponding motor switch unit. Taking the access of the first power supply as an example, the first motor switch unit is in a closed state by default, and when the first power supply has an electric energy output, the execution motor accesses the first power supply through the first motor switch unit to be powered on. Since the execution motor accesses through the first power supply end, it rotates in the first rotation direction, driving the rotation unit to rotate. The rotation unit triggers the first motor switch unit to be disconnected after rotating to a certain extent, at which time the execution motor is powered off. Similarly, taking the access of the second power supply as an example, the second motor switch unit is in a closed state by default, and when the second power supply has an electric energy output, the execution motor accesses the second power supply through the second motor switch unit to be powered on. Since the execution motor accesses through the second power supply end, it rotates in the second rotation direction, driving the rotation unit to rotate. The rotation unit triggers the second motor switch unit to be disconnected after rotating to a certain extent, at which time the execution motor is powered off.

[0068] With the above analysis, when the execution motor rotates in the first rotation direction after being powered on, based on the rotation of the execution motor, the execution switch unit can be driven to conduct the circuit between the first input end and the output end, so as to transmit the electric energy output by the first power supply to the load. Similarly, when the execution motor rotates in the second rotation direction after being powered on, based on the rotation of the execution motor, the execution switch unit can be driven to conduct the circuit between the second input end and the output end, so as to transmit the electric energy output by the second power supply to the load.

[0069] As can be seen, the execution motor changes the switching state of the execution switch unit to realize the selection of the power supply for supplying power to the corresponding load, and the rotation of the execution motor is based on the accessed power supply. That is, when the first power supply is accessed, under the action of the first motor switch unit and the rotation unit, the execution motor is automatically driven to conduct the circuit between the first input end and the output end of the execution switch unit, and after conduction, power is cut off to maintain the current state, and of course, the continuous rotation of the execution motor can be avoided to damage related devices. Similarly, when the second power supply is accessed, under the action of the second motor switch unit and the rotation unit, the execution motor is automatically driven to conduct the circuit between the second input end and the output end of the execution switch unit, and after conduction, power is cut off.

[0070] As shown in Figure 3 In one embodiment, the first motor switch unit includes a first micro switch, the second motor switch unit includes a second micro switch, and the rotation unit includes a rotation dial.

[0071] The first access end of the first micro switch is used to be electrically connected with the live wire of the first power supply through the first alarm switch unit, and the second access end of the first micro switch is used to be electrically connected with the first live wire power supply end of the execution motor.

[0072] The first access end of the second micro switch is used to be electrically connected with the live wire of the second power supply through the second alarm switch unit, and the second access end of the second micro switch is used to be electrically connected with the second live wire power supply end of the execution motor.

[0073] The zero line power supply end of the execution motor is used to be electrically connected with the zero line of the first power supply or the zero line of the second power supply, respectively.

[0074] When the execution motor is in the automatic switching mode (i.e., automatically performing the corresponding closing operation according to the accessed power supply), the zero line power supply end thereof is electrically connected with the zero line of the first power supply or the zero line of the second power supply.

[0075] Further, in the first aspect, only the first micro switch is needed to realize the on-off of the line between the first live wire power supply end of the execution motor and the live wire of the first power supply. When the first micro switch is closed, the live wire and the zero line of the first power supply form a loop with the first live wire power supply end and the zero line power supply end of the execution motor, so that the execution motor rotates in the first rotation direction. Similarly, in the second aspect, only the second micro switch is needed to realize the on-off of the line between the second live wire power supply end of the execution motor and the live wire of the second power supply. When the second micro switch is closed, the live wire and the zero line of the second power supply form a loop with the second live wire power supply end and the zero line power supply end of the execution motor, so that the execution motor rotates in the second rotation direction.

[0076] As shown in the drawings, Figure 4 In one embodiment, the dual-power supply control system further includes a control unit and a channel switching unit.

[0077] The first input end of the channel switching unit is used to access the first power supply, the second input end of the channel switching unit is used to access the second power supply, the first output end of the channel switching unit is electrically connected with the first access end of the first alarm switch unit, the second output end of the channel switching unit is electrically connected with the first access end of the second alarm switch unit, and the controlled end of the channel switching unit is electrically connected with the output end of the control unit.

[0078] The control unit is used to control the switching state of the channel switching unit to output the first power supply to the first alarm switch unit or output the second power supply to the second alarm switch unit.

[0079] The control unit can select the execution motor to access the first power supply or the second power supply by controlling the channel state of the channel switching unit. When the first power supply is selected to be accessed, the first motor switch in the motor switch unit and the rotation unit can control the execution motor to rotate in the first rotation direction according to the specific process mentioned in the above embodiment, so as to realize the conduction of the line between the first power supply and the load. When the second power supply is selected to be accessed, the second motor switch and the rotation unit can control the execution motor to rotate in the second rotation direction according to the specific process mentioned in the above embodiment, so as to realize the conduction of the line between the second power supply and the load.

[0080] In this embodiment, the first power supply can be a normal power supply, and the second power supply can be a backup power supply. When the control unit is not powered on, the channel selection unit accesses the backup power supply by default.

[0081] As shown in the drawings, Figure 5As shown, in one embodiment, the channel switching unit includes a driving subunit and a relay K2, the driving subunit includes a transistor Q2 and a driving chip U4, the first motor switch unit includes a switch SW3, the second motor switch unit includes a switch SW2, the first alarm switch unit includes a switch SW5, and the second alarm switch unit includes a switch SW4.

[0082] The base of the transistor Q2 is electrically connected with the output end of the control unit to access the control signal N_OFF, the collector of the transistor Q2 is electrically connected with the input end (i.e. pin 2) of the driving chip U4, and the emitter of the transistor Q2 is grounded, and the output end (i.e. pins 4 and 6) of the driving chip U4 is electrically connected with the coil part of the relay K2.

[0083] The first input end of the contact part of the relay K2 is used to access the first power supply (including the live wire LA1 and the neutral wire LN1), the second input end of the contact part of the relay K2 is used to access the second power supply (including the live wire LA2 and the neutral wire LN2), the first output end of the contact part of the relay K2 is electrically connected with the first access end of the switch SW5, the second output end of the contact part of the relay K2 is electrically connected with the first access end of the switch SW4, and the output end of the contact part of the relay K2 is further electrically connected with the neutral wire power supply end MN of the execution motor M through the hand-automatic switch S1.

[0084] The second access end of the switch SW5 is electrically connected with the first live wire power supply end M+ of the execution motor M through the switch SW3, and the second access end of the switch SW4 is electrically connected with the second live wire power supply end M- of the execution motor M through the switch SW2.

[0085] When the hand-automatic switch S1 is closed, the execution motor M is in the automatic switching control mode.

[0086] Taking the low-level driving mode of the driving chip U4 as an example:

[0087] On this basis, when the control unit outputs the high-level control signal N_OFF, the transistor Q2 is turned on, the driving chip U4 accesses the low-level, so that the pin 6 and the pin 4 of the driving chip U4 are turned on, at this time, the live wire LA1 of the first power supply forms a current loop through the coil of the relay K2, the pin 6 and the pin 4 of the driving chip U4, and the neutral wire LN1 of the first power supply, the relay K2 is actuated, at this time, the live wire LA1 and the neutral wire LN1 of the first power supply form a loop through the switch SW5, the switch SW3, the hand-automatic switch S1, the second live wire power supply end M+ of the execution motor M, and the neutral wire power supply end MN of the execution motor M, so that the first power supply supplies power to the execution motor M, and the execution motor M rotates in the first rotating direction.

[0088] Similarly, when the control unit outputs a low-level control signal N_OFF, transistor Q2 is cut off, and driver chip U4 is connected to a high-impedance state, thereby disconnecting its pins 6 and 4. At this time, the live wire LA1 of the first power supply cannot form a current loop through the coil of relay K2, pins 6 and 4 of driver chip U4, and the neutral wire LN1 of the first power supply. Relay K2 does not operate. At this time, the live wire LA2 and the neutral wire LN2 of the second power supply form a loop with the second live wire power terminal M- and the neutral wire power terminal MN of the actuator motor M through switches SW4, SW2, and manual / automatic switch S1, respectively, so that the second power supply supplies power to the actuator motor M, and the actuator motor M rotates in the second rotation direction.

[0089] like Figure 6 As shown, in one embodiment, the dual-power supply control system further includes a switching power supply unit.

[0090] The input terminal of the switching power supply unit is used to connect to the first power supply and the second power supply, and the output terminal of the switching power supply unit is electrically connected to the power supply terminal of the control unit.

[0091] The switching power supply unit is used to convert the AC power input from the first or second power source and output the corresponding DC power to the control unit.

[0092] Among them, the use of a switching power supply can effectively reduce the size of the circuit board compared with the transformer step-down and RC step-down methods, and can be adapted to CB-level control schemes.

[0093] In other embodiments, the switching power supply unit may also be used only to connect to a first power supply or a second power supply.

[0094] like Figure 7 As shown, in one embodiment, the switching power supply unit includes a varistor RV1, a rectifier diode D6, an input filter component, a switching power supply chip U2, and an output filter component. The input filter component includes a capacitor CE1, an inductor L1, and a capacitor CE2, and the output filter component includes a capacitor CE3.

[0095] The first end of the varistor RV1 is electrically connected to the anode of the rectifier diode D6 and is used to electrically connect to the live wire LA1 of the first power supply. The second end of the varistor RV1 is used to electrically connect to the neutral wire LN1 of the first power supply.

[0096] The cathode of rectifier diode D6 is electrically connected to the first terminal of capacitor CE1 and the first terminal of inductor L1, respectively. The second terminal of inductor L1 and the first terminal of capacitor CE2 are electrically connected to the input terminal SW of switching power supply chip U2, respectively. The output terminal Vout of switching power supply chip U2 is electrically connected to the first terminal of capacitor CE3 and to the power supply terminal of control unit to output a +5V operating voltage.

[0097] The second end of the capacitor CE1, the second end of the capacitor CE2, the ground end GND of the switching power chip U2, and the second end of the capacitor CE3 are respectively used for grounding.

[0098] The voltage surge protection resistor RV1 is used for surge protection to avoid damage to the subsequent devices by a large voltage.

[0099] The rectifier diode D6 is used for converting alternating current output by the first power supply into direct current.

[0100] The capacitor CE1, the inductor L1, and the capacitor CE2 are used for filtering on the input side of the switching power chip U2.

[0101] The switching power chip U2 is used for controlling the on-off of the output loop by the pulse width modulation method and based on the built-in switching tube, thereby playing a role in adjusting the voltage.

[0102] The capacitor CE3 is used for filtering on the output side of the switching power chip U2.

[0103] As shown in FIG. 1, Figure 6 In one embodiment, the power supply control system of the dual power supply further includes a collection unit.

[0104] The collection unit is electrically connected with the input end of the control unit, and is used for collecting the power supply signals of the first power supply and the second power supply and feeding back to the control unit.

[0105] The collection unit collects the power supply signals of the first power supply and the second power supply at the same time. In other embodiments, only the power supply signals of the first power supply or the second power supply can be collected to reduce the cost.

[0106] Based on the collection unit, the control unit can determine whether the first power supply or the second power supply is suitable for selection according to the feedback power supply signals, and then output the corresponding control signal to the channel switching unit.

[0107] As shown in FIG. 1, Figure 8 In one embodiment, for the live wire LA1 of the first power supply, the collection unit includes the resistor R3, the resistor R4, the resistor R7, the filter capacitor C1, and the clamping device (including the clamping diode D3). The first end of the resistor R4 is used for being electrically connected with the live wire LA1 of the first power supply through the resistor R3, the second end of the resistor R4 is electrically connected with the first end of the filter capacitor C1, the first end of the clamping diode D3, and the first end of the resistor R7 respectively and is used for being electrically connected with the input end of the control unit to output the sampled power supply signal IN_ADC_A1. The second end of the filter capacitor C1 is used for grounding, the second end of the clamping diode D3 is used for being connected with the clamping voltage (including GND and +5V), and the second end of the second voltage dividing resistor R7 is used for being connected with the reference voltage Vref.

[0108] The ratio between the resistance value of the resistor R7 and the total resistance value of the resistor R3, the resistor R4 and the resistor R7 is the voltage division ratio.

[0109] The clamping diode D3 can be turned on when the amplitude of the output power signal IN_ADC_A1 is higher than +5V or lower than GND, respectively, to short-circuit the subsequent circuit and realize voltage clamping.

[0110] The reference voltage Vref is set according to requirements and can also be connected to the zero line LN1 of the first power supply.

[0111] Similarly, for the live wire LB1 of the first power supply, the acquisition unit includes the resistor R10, the resistor R11, the resistor R16, the filter capacitor C2 and the clamping device (including the clamping diode D4). The first end of the resistor R11 is used to be electrically connected to the live wire LB1 of the first power supply through the resistor R10, the second end of the resistor R11 is electrically connected to the first end of the filter capacitor C2, the first end of the clamping diode D4 and the first end of the resistor R16 respectively and is used to be electrically connected to the input end of the control unit to output the sampled power signal IN_ADC_B1. The second end of the filter capacitor C2 is used to be grounded, the second end of the clamping diode D4 is used to be connected to the clamping voltage (including GND and +5V), and the second end of the resistor R16 is used to be connected to the reference voltage Vref.

[0112] Similarly, for the live wire LC1 of the first power supply, the acquisition unit includes the resistor R17, the resistor R18, the resistor R22, the filter capacitor C3 and the clamping device (including the clamping diode D5). The first end of the resistor R18 is used to be electrically connected to the live wire LC1 of the first power supply through the resistor R17, the second end of the resistor R18 is electrically connected to the first end of the filter capacitor C3, the first end of the clamping diode D5 and the first end of the resistor R22 respectively and is used to be electrically connected to the input end of the control unit to output the sampled power signal IN_ADC_C1. The second end of the filter capacitor C3 is used to be grounded, the second end of the clamping diode D5 is used to be connected to the clamping voltage (including GND and +5V), and the second end of the resistor R22 is used to be connected to the reference voltage Vref.

[0113] Based on the above sampling unit, when the control unit has acquired the relevant data of the first power supply through the sampling unit, the state of the first power supply can be indicated through the first indication unit shown. Figure 9 The first indication unit includes the resistor R1 and the light-emitting diode LED1. When the first power supply has power output, the control unit outputs a voltage of +5V to the resistor R1, thereby driving the light-emitting diode LED1 to emit light and realizing the indication of the first power supply.

[0114] As a difference, when the control unit does not acquire the relevant data of the second power supply through the sampling unit, the state of the second power supply can be indicated through the second indication unit shown. Figure 10The second indication unit is shown to indicate the state of the second power supply. Specifically, the second indication unit comprises a rectifier diode D2, a resistor R8, a resistor R9, a resistor R2 and a light emitting diode LED2, the second indication unit is electrically connected with the second power supply through the terminal P3, when the second power supply has power output, the alternating current output by the second power supply is applied to the light emitting diode LED2 after rectification processing of the rectifier diode D2 and voltage division processing of the resistor R8, the resistor R9 and the resistor R2, so as to drive the light emitting diode LED2 to emit light, thereby realizing indication of the second power supply.

[0115] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the detailed description of other embodiments above, which will not be repeated here.

[0116] The above describes in detail the power supply control system of the dual power supply provided by the utility model, the principle and implementation mode of the utility model are described by applying specific examples in this paper, the above embodiment is only used to help understand the method and core idea of the utility model; at the same time, for the skilled in the art, according to the idea of the utility model, the specific implementation mode and application range will be changed, and the above is not understood as the limitation of the utility model.

[0117] The technical features of the above embodiments can be combined arbitrarily, in order to make the description simple, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combination of the technical features does not exist contradictory, it should be considered that it is within the scope of the present application.

Claims

1. A dual power supply control system, characterized by comprising: The power supply control system of the dual power supply comprises an execution switch unit, an execution motor, a motor switch unit, a tripping unit and an alarm switch unit; The execution switch unit is electrically connected with the first power supply, the second power supply and the load respectively and mechanically connected with the execution motor, and is used for controlling the on-off of the line between the first power supply, the second power supply and the load under the driving of the execution motor; The motor switch unit is electrically connected with the execution motor and the alarm switch unit and mechanically connected with the execution motor, and is used for being electrically connected with the first power supply and the second power supply through the alarm switch unit and being controlled to drive the execution motor according to the first power supply or the second power supply and being disconnected after the execution motor completes the corresponding driving control; The tripping unit is mechanically connected with the execution switch unit and the alarm switch unit, and is used for disconnecting the execution switch unit and disconnecting the alarm switch unit when the first power supply or the second power supply fails.

2. The dual power supply control system of claim 1, wherein The motor switch unit comprises a first motor switch unit, a second motor switch unit and a rotating unit, and the alarm switch unit comprises a first alarm switch unit and a second alarm switch unit which are mechanically connected with the tripping unit; The first access end of the first motor switch unit is used for accessing the first power supply through the first alarm switch unit, and the second access end of the first motor switch unit is electrically connected with the first power supply end of the execution motor; the first access end of the second motor switch unit is used for accessing the second power supply through the second alarm switch unit, and the second access end of the second motor switch unit is electrically connected with the second power supply end of the execution motor; The rotating unit is fixedly connected with the rotating shaft of the execution motor, and is used for controlling the first motor switch unit to be disconnected based on the driving of the execution motor in the first rotating direction after the execution motor accesses the first power supply through the first motor switch unit; Or is used for controlling the second motor switch unit to be disconnected based on the driving of the execution motor in the second rotating direction after the execution motor accesses the second power supply through the second motor switch unit.

3. The dual power supply control system of claim 2, wherein The first motor switch unit comprises a first micro switch, the second motor switch unit comprises a second micro switch, and the rotating unit comprises a rotating dial; The first access end of the first micro switch is used for being electrically connected with the live wire of the first power supply through the first alarm switch unit, and the second access end of the first micro switch is used for being electrically connected with the first live power supply end of the execution motor; The first access end of the second micro switch is used for being electrically connected with the live wire of the second power supply through the second alarm switch unit, and the second access end of the second micro switch is used for being electrically connected with the second live power supply end of the execution motor; The zero line power supply end of the execution motor is used for being electrically connected with the zero line of the first power supply and the zero line of the second power supply respectively.

4. The dual power supply control system of claim 2, wherein The power supply control system of the dual power supply further comprises a control unit and a channel switching unit; The first input end of the channel switching unit is used for accessing the first power supply, the second input end of the channel switching unit is used for accessing the second power supply, the first output end of the channel switching unit is electrically connected with the first access end of the first alarm switch unit, the second output end of the channel switching unit is electrically connected with the first access end of the second alarm switch unit, and the controlled end of the channel switching unit is electrically connected with the output end of the control unit; The control unit is used for controlling the switching state of the channel switching unit to output the first power supply to the first alarm switch unit or output the second power supply to the second alarm switch unit.

5. The dual power supply control system of claim 4, wherein, The channel switching unit comprises a driving subunit and a relay; The input end of the driving subunit is electrically connected with the output end of the control unit, the output end of the driving subunit is electrically connected with the coil part of the relay, the first input end of the contact part of the relay is used for accessing the first power supply, the second input end of the contact part of the relay is used for accessing the second power supply, the first output end of the contact part of the relay is electrically connected with the first access end of the first alarm switch unit, and the second output end of the contact part of the relay is electrically connected with the first access end of the second alarm switch unit.

6. The dual power supply control system of claim 5, wherein, The driving subunit comprises a triode and a driving chip; The base of the triode is electrically connected with the output end of the control unit, the collector of the triode is electrically connected with the input end of the driving chip, the emitter of the triode is used for grounding, and the output end of the driving chip is used for being electrically connected with the coil part of the relay.

7. The dual power supply control system of claim 4, wherein, The power supply control system of the dual power supply further comprises a switching power supply unit; The input end of the switching power supply unit is used for accessing the first power supply and / or the second power supply, and the output end of the switching power supply unit is electrically connected with the power supply end of the control unit; The switching power supply unit is used for converting and processing alternating current input by the first power supply or the second power supply to output corresponding direct current to the control unit.

8. The dual power supply control system of claim 7, wherein, The switching power supply unit comprises a pressure-sensitive resistor, a rectifier diode, an input filter assembly, a switching power supply chip and an output filter assembly; The first end of the pressure-sensitive resistor is electrically connected with the anode of the rectifier diode and is used for being electrically connected with the live wire of the first power supply and / or the live wire of the second power supply, and the second end of the pressure-sensitive resistor is electrically connected with the second input end of the input filter assembly and is used for being electrically connected with the zero line of the first power supply and / or the zero line of the second power supply; The cathode of the rectifier diode is electrically connected with the first input end of the input filter assembly, the first output end of the input filter assembly is electrically connected with the input end of the switching power supply chip, the output end of the switching power supply chip is electrically connected with the first input end of the output filter assembly, and the output end of the output filter assembly is electrically connected with the power supply end of the control unit; The second output end of the input filter assembly, the grounding end of the switching power supply chip, the second input end of the output filter assembly and the second output end of the output filter assembly are respectively used for grounding.

9. The dual power supply control system of claim 4, wherein, The power supply control system of the dual power supply further comprises an acquisition unit; The acquisition unit is electrically connected with an input end of the control unit, and is configured to acquire a power supply signal of the first power supply and / or the second power supply and feed back to the control unit.

10. The dual power supply control system of claim 9, wherein, The acquisition unit comprises a first voltage dividing resistor, a second voltage dividing resistor, a filter capacitor and a clamping device. A first end of the first voltage dividing resistor is configured to be electrically connected with a live wire of the first power supply and / or a live wire of the second power supply, a second end of the first voltage dividing resistor is respectively electrically connected with a first end of the filter capacitor, a first end of the clamping device and a first end of the second voltage dividing resistor, and is configured to be electrically connected with the input end of the control unit; A second end of the filter capacitor is configured to be grounded, a second end of the clamping device is configured to be connected with a clamping voltage, and a second end of the second voltage dividing resistor is configured to be connected with a reference voltage.

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