Elevator power supply system with energy storage function

Abstract

The application provides an elevator power supply system with energy storage function, a power supply module outputs a power supply voltage based on an interface communication signal, a carbon-based capacitor module generates a capacitor voltage based on the power supply voltage. A control module sequentially outputs a first opening signal, a second opening signal and a third opening signal based on the interface communication signal. A power grid small current conduction circuit and a capacitor small current conduction circuit are turned on based on the first opening signal; a power grid large current conduction circuit is turned on based on the second opening signal; and a capacitor large current conduction circuit is turned on based on the third opening signal. The control module is powered off based on a third opening signal, and an output module outputs an output voltage to the elevator.

Description

Technical Field

[0001] This invention relates to the field of circuits, and in particular to an elevator power supply system with energy storage function. Background Technology

[0002] In modern society, elevators are widely used in various living spaces, such as residences and shopping malls. Existing elevators are equipped with a drive power supply and a control power supply. The drive power supply is used to maintain the operation of the elevator, while the control power supply is used to send control commands such as the elevator's ascent and descent.

[0003] However, the elevator drive power supply and the elevator control power supply are both supplied by the power grid separately; therefore, the start-up time of the elevator drive power supply will be different. If the start-up time of the elevator control power supply is later than that of the elevator drive power supply, the elevator may run without control commands, which may lead to safety issues.

[0004] Therefore, it is necessary to provide an elevator power supply system with energy storage function to solve the above-mentioned technical problems. Summary of the Invention

[0005] This invention provides an elevator power supply system with energy storage function, which effectively solves the technical problem of poor safety in existing elevators.

[0006] This invention provides an elevator power supply system with energy storage function, comprising:

[0007] The power supply module includes a power supply connection unit, which generates a connection signal, and the power supply module outputs a power supply voltage based on the connection signal.

[0008] A carbon-based capacitor module is used to store energy from the supply voltage to generate a capacitor voltage.

[0009] The control module is configured to activate itself based on the connection signal, output a first activation signal, output a second activation signal after a first activation delay, and output a third activation signal after a second activation delay.

[0010] The switching module is used to connect the low-current conduction circuit of the power grid and the low-current conduction circuit of the capacitor based on the first turn-on signal; to connect the high-current conduction circuit of the power grid based on the second turn-on signal; and to connect the high-current conduction circuit of the capacitor based on the third turn-on signal.

[0011] The output module is used to convert the DC supply voltage and the capacitor voltage into an AC output voltage and output the output voltage to the elevator.

[0012] Compared to existing technologies, the advantages of this invention are as follows: This invention provides an elevator power supply system with energy storage function. This system includes a power supply module, a carbon-based capacitor module, a control module, and a switch module. The control module can connect and output a first start signal based on a connection signal. The switch module connects a small-current conduction circuit of the power grid and a small-current conduction circuit of the capacitor based on the first start signal. Thus, the small-current conduction circuit of the power grid and the small-current conduction circuit of the capacitor can transmit the power supply voltage to the carbon-based capacitor module. Furthermore, the charging operation of the carbon-based capacitor module by the power supply voltage ensures that the carbon-based capacitor has sufficient charge, guaranteeing normal operation of the control module during power outages. After a first start-up delay, the control module outputs a second start signal, and the switch module connects a large-current conduction circuit of the power grid based on the second start signal. Therefore, the power supply module can output power supply voltage to the elevator. Thus, the elevator can quickly start and operate normally based on the power supply voltage. In this elevator power supply system with energy storage function, the control module is connected first, and then power is supplied to the elevator, ensuring that the start-up time of the elevator control module is earlier than the start-up time of the elevator. Therefore, the elevator only operates when a control command is received. This reduces the risk of the elevator going out of control, making it safer for users. This effectively solves the technical problem of poor safety in existing elevators. After a second delay before starting, the control module outputs a third start signal. Based on this third start signal, the switching module connects a small-current conduction circuit to the power grid, allowing the carbon-based capacitor module to regulate the capacitor voltage output to the elevator. This capacitor voltage can be used to adjust the power supply voltage, making the voltage output to the elevator more stable, thus ensuring stable elevator operation. Attached Figure Description

[0013] Figure 1 This is a block diagram of the elevator power supply system with energy storage function according to the present invention.

[0014] Figure 2 This is a circuit diagram of the elevator power supply system with energy storage function according to the present invention.

[0015] In the diagram, 10 is an elevator power supply system with energy storage function; 11 is a power supply module; 111 is a power supply connection unit; 12 is a carbon-based capacitor module; 121 is a carbon-based capacitor power supply; 13 is a control module; 131 is a first control output unit; 132 is a second control output unit; 133 is a third control output unit; 134 is a fourth control output unit; 135 is a first indicator unit; 136 is a second indicator unit; 137 is a power grid control unit; 138 is a capacitor control unit; 139 is a control input unit; 14 is a switch module; 141 is a small current conduction circuit for the power grid; 142 is a large current conduction circuit for the power grid; 143 is a small current conduction circuit for the capacitor; 144 is a large current conduction circuit for the capacitor; 15 is an output module; 151 is a test unit; 152 is a braking unit; 153 is an inverter unit; 1531 is a U-phase branch; 1532 is a buffer circuit; 1533 is a V-phase branch; 1534 is a W-phase branch. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] The directional terms mentioned in this invention, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this invention, and are not intended to limit this invention.

[0018] The terms "first" and "second" used in the terminology of this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance, nor as limiting the order of events.

[0019] In the diagram, units with similar structures are represented by the same labels.

[0020] Please refer to Figure 1 and Figure 2This invention provides an elevator power supply system 10 with energy storage function. The elevator power supply system 10 includes a power supply module 11, a carbon-based capacitor module 12, a control module 13, a switch module 14, and an output module 15. The power supply module is connected to the power grid, which inputs a three-phase 380V AC voltage. The power supply module 11 includes a power supply switch K2, a high-frequency switching power supply U4, a power converter U1, a switching power supply controller U3, and a surge voltage absorption circuit SPD1. One end of the power supply switch K2 is connected to the power grid, and the other end is connected to the input terminal of the high-frequency switching power supply U4. The output terminal of the high-frequency switching power supply U4 is connected to a low-current conduction circuit 141 and a high-current conduction circuit 142 of the power grid, allowing the high-frequency switching power supply U4 to convert the AC voltage input from the power grid into DC voltage. The input terminal of the power converter U1 is connected in parallel between the power supply switch K2 and the input terminal of the high-frequency switching power supply U4, and the output terminal of the power converter U1 is connected to the switching power supply controller U3. Power converter U1 converts AC voltage from the mains input to DC voltage, specifically converting 380V AC voltage to 24V DC voltage. Furthermore, power converter U1 supplies power to switching power supply controller U3. Switching power supply controller U3 is connected to the control terminal of high-frequency switching power supply U4, and can control its on / off state. Surge voltage absorption circuit SPD1 is connected in parallel between power supply switch K2 and high-frequency switching power supply U4, and is used to prevent surge voltage from damaging power supply module 11.

[0021] Please refer to Figure 1 and Figure 2 The power supply module 11 includes a power supply activation unit 111, which generates activation and deactivation signals. The power supply activation unit 111 includes an activation switch SA1 connected to the output terminal of the power converter U1. When the activation switch SA1 is closed, the power supply activation unit 111 generates an activation signal. When the activation switch SA1 is open, the power supply activation unit 111 generates a deactivation signal. Based on the activation signal, the power supply module 11 can output a supply voltage through the high-frequency switching power supply U4.

[0022] Please refer to Figure 1 and Figure 2The carbon-based capacitor module 12 is used for energy storage of the supply voltage and can generate capacitor voltage. The carbon-based capacitor module 12 also includes a carbon-based capacitor power supply 121, a DC transformer CT, a first fuse switch FU1, a second fuse switch FU2, and a first DC surge protector SPD2. The positive terminal of the carbon-based capacitor power supply 121 is connected to a small-current capacitor conducting circuit 143 and a large-current capacitor conducting circuit 144, and the negative terminal of the carbon-based capacitor power supply 121 is grounded. The first fuse switch FU1 is connected between the positive terminal of the carbon-based capacitor power supply 121 and the small-current capacitor conducting circuit 143. The DC transformer CT is connected between the negative terminal of the carbon-based capacitor power supply 121 and the ground terminal. The second fuse switch FU2 is connected between the negative terminal of the carbon-based capacitor power supply 121 and the DC transformer CT. Furthermore, one end of the first DC surge protector SPD2 is connected to the positive terminal of the carbon-based capacitor power supply 121, and the other end of the first DC surge protector SPD2 is grounded.

[0023] Please refer to Figure 1 and Figure 2 The control module 13 can be activated based on an on signal, thereby outputting a first on signal. Based on the first on signal, the switch module 14 can connect the mains low-current conducting circuit 141 and the capacitor low-current conducting circuit 143. After a first start-up delay, the control module 13 outputs a second on signal. Based on the second on signal, the switch module 14 can connect the mains high-current conducting circuit 142. After a second start-up delay, the control module 13 outputs a third on signal. Based on the third on signal, the switch module 14 can connect the capacitor high-current conducting circuit 144.

[0024] Please refer to Figure 1 and Figure 2 The control module 13 can be shut down based on a shutdown signal, thereby outputting a first disconnect signal. Based on the first disconnect signal, the switch module 14 can disconnect the mains high-current conducting circuit 142 and the capacitor high-current conducting circuit 144. After a third delay, the control module 13 outputs a second disconnect signal. Based on the second disconnect signal, the switch module 14 can disconnect the mains low-current conducting circuit 141. After a fourth delay, the control module 13 outputs a third disconnect signal. Based on the third disconnect signal, the switch module 14 can disconnect the capacitor low-current conducting circuit 143. Furthermore, the control module 13 can de-energize based on the third disconnect signal.

[0025] Please refer to Figure 1 and Figure 2When the elevator power system 10 with energy storage function is normally shut down, the control module 13 outputs a first normal disconnect signal. Based on the first normal disconnect signal, the switch module 14 disconnects the mains high-current conducting circuit 142 and the capacitor high-current conducting circuit 144. After a delay of the normal shutdown time, the control module 13 outputs a second normal disconnect signal. Based on the second normal disconnect signal, the switch module 14 disconnects the mains low-current conducting circuit 141 and the capacitor low-current conducting circuit 143.

[0026] Please refer to Figure 1 and Figure 2 When the power grid fails, the power supply connection unit outputs a shutdown signal, and the control module 13 outputs a first abnormal disconnection signal based on the shutdown signal. Based on the first abnormal disconnection signal, the switch module 14 disconnects the high-current power supply circuit 142 and the low-current power supply circuit 141. After a delay of the first abnormal shutdown time, the control module 13 outputs a second abnormal disconnection signal. Based on the second abnormal disconnection signal, the switch module 14 disconnects the high-current capacitor power supply circuit 144. After a delay of the second abnormal shutdown time, the control module 13 outputs a third abnormal disconnection signal. Based on the third abnormal disconnection signal, the switch module 14 disconnects the low-current capacitor power supply circuit 143.

[0027] Please refer to Figure 1 and Figure 2 The control module 13 includes a control input unit 139 and a DC control power supply U2, which supplies power to the control module. The DC control power supply U2 can output a 24V DC voltage. The control input unit 139 includes a mains input contactor 1DJ, whose input terminal is connected to the power supply module 11 and the carbon-based capacitor module 12. The control terminal of the mains input contactor 1DJ is connected to a switch SA1, and the output terminal of the mains input contactor 1DJ is connected to the DC control power supply U2.

[0028] Please refer to Figure 1 and Figure 2 The control module 13 includes a first control output unit 131, which includes a low-current time relay 1SJ. The switch module 14 includes a low-current conduction circuit 141, which includes a low-current contactor DJ1B and a first current-limiting resistor R1. One end of the low-current time relay DJ1B is connected to the DC control power supply U2, and the other end of the low-current time relay 1SJ is connected to the control terminal of the low-current contactor DJ1B. One end of the low-current contactor DJ1B is connected to the power supply module, and the other end is connected to the first current-limiting resistor R1, which is connected to the output module 15.

[0029] Please refer to Figure 1 and Figure 2 The control module 13 includes a second control output unit 132, which includes a capacitor low-current time relay 3SJ. The switch module 14 includes a capacitor low-current conduction circuit 143, which includes a capacitor low-current contactor DJ2B and a second current-limiting resistor R2. One end of the capacitor low-current time relay DJ2B is connected to the DC control power supply U2, and the other end is connected to the control terminal of the capacitor low-current contactor 3SJ. One end of the capacitor low-current contactor 3SJ is connected to the power supply module 15, and the other end is connected to the second current-limiting resistor R2, which is connected to the output module 15.

[0030] Please refer to Figure 1 and Figure 2 The control input unit 139 also includes a capacitor input contactor 2DJ, which is connected in parallel with the mains input contactor 1DJ. The input terminal of the capacitor input contactor 2DJ is connected to the power supply module 11 and the carbon-based capacitor module 12, the output terminal of the capacitor input contactor 2DJ is connected to the DC control power supply U2, and the control terminal of the capacitor input contactor 2DJ is connected to the capacitor low-current time relay DJ2B.

[0031] Please refer to Figure 1 and Figure 2 The control module 13 includes a third control output unit 133, which includes a high-current time relay 2SJ. The switch module 14 includes a high-current conduction circuit 142, which includes a high-current contactor DJ1A. One end of the high-current time relay 2SJ is connected to the DC control power supply U2, and the other end is connected to the control terminal of the high-current contactor DJ1A. One end of the high-current contactor DJ1A is connected to the power supply module 11, and the other end is connected to the output module 15.

[0032] Please refer to Figure 1 and Figure 2The control module 13 includes a fourth control output unit 134, which includes a high-current capacitor time relay 4SJ. The switch module 14 includes a high-current capacitor conduction circuit 144, which includes a high-current capacitor contactor DJ2A. One end of the high-current capacitor time relay 4SJ is connected to the DC control power supply U2, and the other end is connected to the control terminal of the high-current capacitor contactor DJ2A. One end of the high-current capacitor contactor DJ2A is connected to the power supply module 11, and the other end is connected to the output module 11. The control module 13 includes a third fuse switch K4, one end of which is connected to the first fuse switch K1, and the other end is connected to the mains input contactor 1DJ and the capacitor input contactor 2DJ. The switch module 14 also includes a second DC surge protector SPD3. One end of the second DC surge protector SPD3 is connected to the first fuse switch, and the other end of the second DC surge protector SPD3 is grounded. The second DC surge protector SPD3 is used to prevent surge voltage from damaging the switch module 14.

[0033] Please refer to Figure 1 and Figure 2 The control module 13 also includes a first indicator unit 135, which includes a first intermediate relay 20ZJ and a first indicator light L0. One end of the first intermediate relay 20ZJ is connected to the DC control power supply U2, and the other end is connected to the first indicator light L0. The control terminal of the first intermediate relay 20ZJ is connected to the power grid. When the power grid inputs voltage, the first intermediate relay 20ZJ will conduct, thereby illuminating the first indicator light. Furthermore, the illumination of the first indicator light L0 indicates that the power grid voltage has been connected to the elevator power system 10 with energy storage function.

[0034] Please refer to Figure 1 and Figure 2 The control module 13 also includes a second indicator unit 136, which includes a second intermediate relay 21ZJ and a second indicator light L1. One end of the second intermediate relay 21ZJ is connected to the DC control power supply U2, and the other end is connected to the second indicator light L1. The control terminal of the second intermediate relay 21ZJ is connected between the control terminals of the high-current time relay 2SJ and the high-current contactor DJ1A. When the high-current time relay 2SJ is turned on, it outputs a second turn-on signal. The control terminal of the second intermediate relay 21ZJ receives the second turn-on signal, which drives the second intermediate relay 21ZJ to turn on, thereby illuminating the second indicator light L1. The illumination of the second indicator light L1 indicates that the output module 15 has received the power supply voltage.

[0035] Please refer to Figure 1 and Figure 2 The control module 13 also includes a power grid control unit 137, which includes a power grid control relay 6ZJ. One end of the power grid control relay 6ZJ is connected to the DC control power supply U2, and the other end is connected to the control terminals of the high-current time relay 2SJ and the low-current time relay 1SJ. The control module 13 also includes a buzzer and a first buzzer control switch 6ZJA. One end of the first buzzer control switch 6ZJA is connected to the DC control power supply U2, and the other end is connected to the buzzer HA.

[0036] When a power grid fault occurs, the power grid control relay 6ZJ will disconnect, thus outputting a first disconnection signal. The control terminals of the high-current time relay 2SJ and the low-current time relay 1SJ receive this first disconnection signal, causing both relays to disconnect. Furthermore, the high-current time relay 2SJ outputs a first disconnection signal. The control terminal of the high-current contactor DJ1A receives this first disconnection signal, and the high-current conduction circuit 142 can disconnect based on this signal. Additionally, the low-current time relay 1SJ outputs a second disconnection signal. The control terminal of the low-current contactor DJ1B receives this second disconnection signal, and the low-current conduction circuit 142 disconnects based on this signal. Simultaneously, the first buzzer control switch 6ZJA closes, activating the buzzer HA and triggering an alarm.

[0037] Please refer to Figure 1 and Figure 2 The control module 13 also includes a capacitor control unit 138, which includes a capacitor control relay 7ZJ. One end of the capacitor control relay 7ZJ is connected to the DC control power supply U2, and the other end is connected to the control terminals of the high-current capacitor time relay 4SJ and the low-current capacitor time relay 3SJ. The control module 13 also includes a second buzzer control switch 7ZJA, one end of which is connected to the DC control power supply U2, and the other end is connected to a buzzer HA. The control module 13 also includes a toggle switch SA2, one end of which is connected to the DC control power supply U2, and the other end of which is connected between the voltage control relay 6ZJ and the capacitor control relay 7ZJ.

[0038] When the carbon-based capacitor fails, the capacitor control relay 7ZJ will disconnect, thus outputting a second cut-off signal. The control terminals of the high-current capacitor time relay 4SJ and the low-current capacitor time relay 3SJ receive this second cut-off signal, causing both relays to disconnect. Further, the high-current capacitor time relay 4SJ will output a first disconnect signal. The control terminal of the high-current capacitor contactor DJ2A receives this first disconnect signal, and the high-current capacitor conducting circuit 144 can disconnect based on this signal. Additionally, the low-current capacitor time relay 3SJ will output a third disconnect signal. The control terminal of the low-current capacitor contactor DJ2B receives this third disconnect signal, and the low-current capacitor conducting circuit 143 can disconnect based on this signal. Simultaneously, the second buzzer control switch 7ZJA will close, activating the buzzer HA and triggering an alarm.

[0039] Please refer to Figure 1 and Figure 2 The output module 15 converts the DC supply voltage and capacitor voltage into an AC output voltage, which can then be transmitted to the elevator. The output module 15 includes a test unit 151, which comprises a first charging capacitor Cp, a second charging capacitor Cn, a third charging capacitor Cp1, a fourth charging capacitor Cn1, a first charging current-limiting resistor Rp, and a second charging current-limiting resistor Rn. One end of the first charging capacitor Cp is connected to a low-current contactor DJ1A, and the other end of the first charging capacitor Cp is connected to one end of the second charging capacitor Cn, which is grounded. One end of the third charging capacitor Cp1 is connected to the low-current contactor DJ1A, and the other end of the third charging capacitor Cp1 is connected to one end of the fourth charging capacitor Cn1, which is grounded. The connection terminals of the third charging capacitor Cp1 and the fourth charging capacitor Cn1 are connected to the connection terminals of the first charging capacitor Cp and the second charging capacitor Cn.

[0040] Please refer to Figure 1 and Figure 2 One end of the first charging current-limiting resistor Rp is connected to the mains low-current contactor DJ1A, and the other end of Rp is connected to one end of the second charging current-limiting resistor Rn. The other end of the second charging current-limiting resistor Rn is grounded. The connection point between the first and second charging current-limiting resistors Rp and Rn is connected to the connection points of the third and fourth charging capacitors Cp1 and Cn1. Theoretically, this part of the charging capacitors can be eliminated, but it is recommended to retain them during the testing phase. During testing, it can be used to compare the differences in circuit effects between eliminating and retaining this capacitor.

[0041] Please refer to Figure 1 and Figure 2The output module includes a braking unit 152 and an inverter unit 153. The braking unit 152 includes a braking resistor Ra, a diode D1, a transistor Ta, and a resistor FU. One end of the braking resistor Ra is connected to a low-current contactor DJ1A, and the other end is connected to the collector of the transistor Ta. The emitter of the transistor Ta is grounded, and the base of the transistor Ta is left floating. The anode of the diode D1 is connected to the low-current contactor DJ1A, and the cathode of the diode D1 is connected to the collector of the transistor Ta. The resistor FU is connected to the anode of the diode D1. Because the braking unit 152 is equipped with the braking resistor Ra, the elevator power system 10 with energy storage function can perform emergency braking on the elevator through the braking unit 152 when the elevator is in danger. Therefore, it is safer for users to use elevators with this drive circuit.

[0042] Please refer to Figure 1 and Figure 2 The inverter unit 153 is used to convert DC voltage into AC voltage. Furthermore, the inverter unit 153 is connected to the elevator, allowing it to transmit its output voltage to the elevator. The inverter unit 153 includes a U-phase branch 1531, a buffer circuit 1532, a V-phase branch 1533, and a W-phase branch 1534. One end of the U-phase branch 1531 is connected to a resistor FU, and the other end of the U-phase branch 1531 is connected to the buffer circuit 1532. The connection between the U-phase branch 1531 and the buffer circuit 1532 is connected to the elevator. The U-phase branch 1531, V-phase branch 1533, and W-phase branch 1534 are connected in parallel, with V-phase branch 1533 and W-phase branch 1534 respectively connected to the elevator.

[0043] Please refer to Figure 1 and Figure 2 When the mains input voltage is applied, the switching switch SA1 will close, generating a connection signal. The control terminal of the mains input contactor 1DJ receives this connection signal, which drives the mains input contactor 1DJ to conduct. This activates the control module 13, which drives the capacitor low-current time relay 3SJ and the mains low-current time relay 1SJ to conduct. The capacitor low-current time relay 3SJ and the mains low-current time relay 1SJ output a first opening signal. The control terminal of the mains low-current contactor DJ1B receives this first opening signal, which drives the mains low-current conduction circuit 141 to conduct. Simultaneously, the control terminal of the capacitor low-current contactor DJ2B receives this first opening signal, which drives the capacitor low-current conduction circuit 143 to conduct. The switch module 14 transmits the power supply voltage to the carbon-based capacitor module 12 through the mains low current conduction circuit 141 and the capacitor low current conduction circuit 143, and the control terminal of the capacitor input contactor 2DJ receives the first opening signal, which can drive the capacitor input contactor 2DJ to conduct.

[0044] Please refer to Figure 1 and Figure 2 When the capacitor low-current time relay 3SJ and the mains low-current time relay 1SJ are turned on, the control module 13 will delay the first start-up time. Afterwards, the control module 13 can drive the mains high-current time relay 2SJ to turn on. This first start-up time can be 2 seconds. The mains high-current time relay 2SJ can output a second turn-on signal, which is received by the control terminal of the mains high-current contactor DJ1A. The turn-on signal can drive the mains high-current conduction circuit 142 to turn on, and the switch module 14 transmits the supply voltage to the output module 15 through the mains high-current conduction circuit 142.

[0045] Please refer to Figure 1 and Figure 2 When the high-current time relay 2SJ is turned on, the control module 13 delays the second start-up time. Then, the control module 13 drives the high-current time relay 4SJ to turn on, where the second start-up time can be 1 second. The high-current time relay 4SJ outputs a third turn-on signal, which is received by the control terminal of the high-current contactor DJ2A. The third turn-on signal can drive the high-current conduction circuit 144 to turn on, and the switch module 14 transmits the capacitor voltage to the output module 15 through the high-current conduction circuit 144.

[0046] Please refer to Figure 1 and Figure 2 When the elevator power system 10 with energy storage function is normally shut off, the capacitor high-current time relay 4SJ and the mains high-current time relay 2SJ output a first normal disconnect signal. The control terminal of the mains high-current contactor DJ1A receives the first normal disconnect signal, and the mains high-current conduction circuit 142 disconnects based on this first normal disconnect signal. The control terminal of the capacitor high-current contactor 4SJ receives the first normal disconnect signal, and the capacitor high-current conduction circuit 144 can disconnect based on this first normal disconnect signal. Moreover, the switching module 14 transmits the capacitor voltage to the output module 15 through the capacitor low-current conduction circuit 143.

[0047] After the high-current capacitor time relay 4SJ and the high-current grid time relay 2SJ are disconnected, the control module 13 can delay the normal shutdown time. Then, the control module 13 controls the low-current grid time relay 1SJ to disconnect. The low-current grid time relay 1SJ outputs a second normal shutdown signal, which is received by the control terminal of the low-current grid contactor DJ1B, causing the low-current grid conduction circuit 141 to disconnect based on the second normal shutdown signal. Furthermore, the control module 13 controls the low-current capacitor time relay 3SJ to disconnect. The low-current capacitor time relay 3SJ outputs a second normal shutdown signal, which is received by the control terminal of the low-current capacitor contactor DJ2B, causing the low-current capacitor conduction circuit 143 to disconnect based on the second shutdown signal. The control terminal of the capacitor input contactor 2DJ also receives the second normal shutdown signal, causing the capacitor input contactor 2DJ to disconnect based on the second normal shutdown signal. Normal elevator shutdown means that the power supply to the elevator is manually shut off, allowing people to perform maintenance on the elevator. At this time, the power grid supplies power normally, and the power grid can provide power to the control module 13 based on the power grid input contactor 1DJ. Therefore, even if the high-current conduction circuit, the low-current conduction circuit, the low-current conduction circuit, and the high-current conduction circuit of the capacitor are all disconnected, the control module will not lose power. The control module continues to work after a normal power outage, thus ensuring the stability of subsequent power-on. With the control module 13 working normally, the elevator can also quickly and normally operate after power-on.

[0048] Please refer to Figure 1 and Figure 2 When the power grid stops inputting voltage, the power supply module 11 can disconnect the on / off switch SA1. Thus, the on / off switch SA1 generates a shutdown signal. The control terminal of the power grid input contactor 1DJ receives the shutdown signal, and the power grid input contactor 1DJ disconnects based on this shutdown signal. Furthermore, the control module 13 can control the power grid low-current time relay 1SJ and the power grid high-current time relay 2SJ to shut down. The power grid low-current time relay 1SJ and the power grid high-current time relay 2SJ output a first abnormal disconnection signal. The control terminal of the power grid high-current contactor DJ1A receives the first abnormal disconnection signal, and the power grid high-current conduction circuit 142 disconnects based on this first disconnection signal. Moreover, the control terminal of the power grid low-current contactor DJ1B also receives the first disconnection signal, and the power grid low-current conduction circuit 141 disconnects based on this first abnormal disconnection signal. At this time, the switch module 14 transmits the capacitor voltage to the output module 15 through the capacitor low-current conduction circuit 143.

[0049] Please refer to Figure 1 and Figure 2When the low-current time relay 1SJ and the high-current time relay 2SJ are disconnected, the control module 13 can delay the first abnormal shutdown time. Afterwards, the control module 13 controls the high-current time relay 4SJ to disconnect. The high-current time relay 4SJ outputs a second abnormal disconnect signal, and the control terminal of the high-current contactor DJ2A receives the second disconnect signal. The low-current conduction circuit 144 can then disconnect based on this second abnormal disconnect signal.

[0050] Please refer to Figure 1 and Figure 2 When the high-current capacitor time relay 4SJ is disconnected, the control module 13 can delay the second abnormal shutdown time. Afterwards, the control module 13 controls the low-current capacitor time relay 3SJ to disconnect. The low-current capacitor time relay 3SJ outputs a third disconnect signal, and the control terminal of the low-current capacitor contactor DJ2B receives the third abnormal disconnect signal. The low-current capacitor conduction circuit 143 can disconnect based on this third abnormal disconnect signal. Furthermore, the control terminal of the capacitor input contactor 2DJ also receives the third abnormal disconnect signal and will disconnect based on it. In the event of a power outage, the control module 13 can also drive the low-current capacitor conduction circuit 143 and the capacitor input trigger 2DJ to conduct, ensuring that the carbon-based capacitor module continues to supply power to the elevator and the control module 13. Even if there is no current in the high-current capacitor conduction circuit and the low-current capacitor conduction circuit, the above power outage process ensures that the capacitor input trigger 2DJ is the last to close. Moreover, the carbon-based capacitor power supply 121 can maintain the normal operation of the control module 13 and the elevator during a power outage. After a power outage, the carbon-based capacitor power supply 121 provides enough power for the elevator to run its entire length twice consecutively. This ensures the elevator can promptly transport all passengers during a power outage. After all passengers have been transported, the control module 13 de-energizes, causing the capacitor input trigger 2DJ and the capacitor low-current conduction circuit 143 to disconnect. Only then does the elevator stop operating. In other words, the control module 13 will only stop operating after the elevator has delivered passengers to a safe location. Alternatively, the control module 13 may stop operating if the carbon-based capacitor power supply 121 has insufficient power.

[0051] The working principle of this invention is as follows: When the mains input voltage is present, the elevator power supply system 10 with energy storage function can drive the power supply switch K2 to close, at which time the third fuse switch K4 is in the closed state. Furthermore, the power supply module 11 can drive the connection switch SA1 to close, and the elevator power supply system 10 with energy storage function can also drive the switching switch SA2, the mains control relay 6ZJ, and the capacitor control relay 7ZJ to close. Simultaneously, the control terminal of the first intermediate relay 20ZJ can receive the mains input voltage. Therefore, the first intermediate relay 20ZJ will conduct. After the first intermediate relay 20ZJ conducts, the first indicator light L0 will illuminate.

[0052] Then, the switch SA1 generates an on signal, which is received by the control terminal of the mains input contactor 1DJ. Subsequently, the mains input contactor 1DJ conducts and activates the control module 13. Because the control module 13 is activated, it drives the capacitor low-current time relay 1SJ and the mains low-current time relay 3SJ to conduct. Next, the capacitor low-current time relay 1SJ and the mains low-current time relay 3SJ output a first on signal. The control terminal of the mains low-current contactor DJ1B receives this first on signal, and the mains low-current conduction circuit 141 is activated based on this first on signal. Simultaneously, the control terminal of the capacitor low-current contactor DJ2B receives the first on signal, and the capacitor low-current conduction circuit 143 is activated based on this first on signal. The switch module 14 can transmit the supply voltage to the carbon-based capacitor module 12 through the capacitor low-current conduction circuit 143 and the mains low-current conduction circuit 141; therefore, the carbon-based capacitor module 12 performs energy storage operation on the supply voltage. Thus, the carbon-based capacitor module 12 can generate a capacitor voltage. Furthermore, the control terminal of the capacitor input contactor 2DJ also receives the first activation signal, and the capacitor input contactor 2DJ can be turned on based on the first activation signal.

[0053] After the capacitor low-current time relay 3SJ and the mains low-current time relay 1SJ are turned on, the control module 13 can delay the first start time. Then, the control module 13 drives the mains high-current time relay 2SJ to conduct. Then, the mains high-current time relay 2SJ outputs a second start signal. Subsequently, the control terminal of the mains high-current contactor 2SJ receives the second start signal. Then, the mains high-current conduction circuit 142 can be turned on based on the second start signal. Simultaneously, the control terminal of the second intermediate relay 21ZJ receives the second start signal. Thus, the second intermediate relay 21ZJ can be turned on based on the second start signal. After the second intermediate relay 21ZJ is turned on, the second indicator light L1 will illuminate. Since the mains high-current conduction circuit 142 is connected between the power supply module 11 and the output module 15, the switch module 14 can transmit the power supply voltage to the output module 15 through the mains high-current conduction circuit 142. The output module 15 can convert the DC power supply voltage into an AC output voltage, and the output module 15 can output the output voltage to the elevator. Therefore, the elevator can operate normally.

[0054] After the high-current time relay 2SJ is turned on, the control module 13 can delay the second start time. Then, the control module 13 drives the high-current time relay 4SJ to conduct, and the high-current time relay 4SJ outputs a third turn-on signal. Then, the control terminal of the high-current contactor DJ2A receives this third turn-on signal. Thus, the high-current conduction circuit 144 is turned on based on this third turn-on signal. Since the high-current conduction circuit 144 is connected between the carbon-based capacitor module 12 and the output module 15, the switching module 14 can transmit the capacitor voltage to the output module 15 through the high-current conduction circuit 144. The output module 15 can convert the DC capacitor voltage into an AC output voltage, and this capacitor voltage effectively regulates the output voltage.

[0055] When the elevator power system 10 with energy storage function is normally shut off, the capacitor high-current time relay 4SJ and the mains high-current time relay 2SJ output a first normal disconnect signal. Subsequently, the control terminal of the mains high-current contactor DJ1A receives the first normal disconnect signal, and the mains high-current conduction circuit 142 disconnects based on this first normal disconnect signal. Next, the control terminal of the capacitor high-current contactor 4SJ receives the first normal disconnect signal, and the capacitor high-current conduction circuit 144 can disconnect based on this first normal disconnect signal. Moreover, the switching module 14 transmits the capacitor voltage to the output module 15 through the capacitor low-current conduction circuit 143.

[0056] After the high-current capacitor time relay 4SJ and the high-current grid time relay 2SJ are disconnected, the control module 13 can delay the normal shutdown time. Then, the control module 13 controls the low-current grid time relay 1SJ to disconnect. Subsequently, the low-current grid time relay 1SJ outputs a second normal disconnect signal, which is received by the control terminal of the low-current grid contactor DJ1B, causing the low-current grid conduction circuit 141 to disconnect based on the second normal disconnect signal. Furthermore, the control module 13 controls the low-current capacitor time relay 3SJ to disconnect. Subsequently, the low-current capacitor time relay 3SJ outputs a second normal disconnect signal. Next, the control terminal of the low-current capacitor contactor DJ2B receives this second normal disconnect signal, causing the low-current capacitor conduction circuit 143 to disconnect based on this second disconnect signal. Also, the control terminal of the capacitor input contactor 2DJ receives the second normal disconnect signal, causing the capacitor input contactor 2DJ to disconnect based on this second normal disconnect signal.

[0057] When the power grid stops inputting voltage, the power supply module 11 can disconnect the on / off switch SA1. Thus, the on / off switch SA1 generates a shutdown signal. The control terminal of the power grid input contactor 1DJ receives the shutdown signal, and the power grid input contactor 1DJ disconnects based on this shutdown signal. Furthermore, the control module 13 can control the power grid low-current time relay 1SJ and the power grid high-current time relay 2SJ to turn off. Subsequently, the power grid low-current time relay 1SJ and the power grid high-current time relay 2SJ output a first abnormal disconnection signal. Then, the control terminal of the power grid high-current contactor DJ1A receives the first abnormal disconnection signal, and the power grid high-current conduction circuit 142 disconnects based on this first disconnection signal. Moreover, the control terminal of the power grid low-current contactor DJ1B also receives the first disconnection signal, and the power grid low-current conduction circuit 141 disconnects based on this first abnormal disconnection signal. At this time, the switch module 14 transmits the capacitor voltage to the output module 15 through the capacitor low-current conduction circuit 143. The output module 15 can supply power to the elevator, allowing the elevator to maintain normal operation for a period of time. Furthermore, the carbon-based capacitor module 12 can supply power to the control module 13 through the capacitor input contactor 2DJ, so that the control module 13 can also maintain normal operation for a period of time.

[0058] After the low-current time relay 1SJ and the high-current time relay 2SJ are disconnected, the control module 13 can delay the first abnormal shutdown time. Then, the control module 13 controls the high-current time relay 4SJ to disconnect. Next, the high-current time relay 4SJ outputs a second abnormal shutdown signal. The control terminal of the high-current contactor DJ2A receives the second shutdown signal, and the low-current conduction circuit 144 can disconnect based on this second abnormal shutdown signal.

[0059] When the high-current capacitor time relay 4SJ is disconnected, the control module 13 can delay the second abnormal shutdown time. Then, the control module 13 controls the low-current capacitor time relay 3SJ to disconnect. Next, the low-current capacitor time relay 3SJ outputs a third disconnect signal. The control terminal of the low-current capacitor contactor DJ2B receives the third abnormal disconnect signal, and the low-current capacitor conduction circuit 143 can disconnect based on this signal. Furthermore, the control terminal of the capacitor input contactor 2DJ also receives the third abnormal disconnect signal and disconnects based on it. Because the low-current capacitor conduction circuit 143 is disconnected, the carbon-based capacitor module 12 stops supplying power to the elevator, causing the elevator to stop operating. Also, because the capacitor input contactor 2DJ is disconnected, the carbon-based capacitor module 12 also stops supplying power to the control module 13, causing the control module 13 to stop operating.

[0060] When a power grid failure occurs, control module 13 can disconnect the power grid control relay 6ZJ. Then, the power grid control relay 6ZJ outputs a first disconnect signal, which is received by the control terminals of the high-current time relay 2SJ and the low-current time relay 2SJ. Subsequently, the high-current time relay 2SJ and the low-current time relay 1SJ can both disconnect based on the first disconnect signal. Then, the high-current time relay 2SJ outputs a first disconnect signal. The control terminal of the high-current contactor DJ1A receives the first disconnect signal, and the high-current conduction circuit 142 can disconnect based on this signal. Simultaneously, the low-current time relay 1SJ outputs a second disconnect signal. The control terminal of the low-current contactor DJ1B receives the second disconnect signal, and the low-current conduction circuit 141 can disconnect based on this signal. Therefore, if a power grid failure occurs, the user can manually disconnect the high-current conduction circuit 142 and the low-current conduction circuit 141, effectively preventing damage to the drive circuit or elevator caused by the power grid failure.

[0061] When the carbon-based capacitor fails, control module 13 can disconnect the capacitor control relay 7ZJ. Then, capacitor control relay 7ZJ outputs a second disconnect signal, which is received by the control terminals of high-current capacitor time relay 4SJ and low-current capacitor time relay 3SJ. Subsequently, high-current capacitor time relay 4SJ and low-current capacitor time relay 3SJ disconnect. Then, high-current capacitor time relay 4SJ outputs a first disconnect signal. The control terminal of high-current capacitor contactor DJ2A receives the first disconnect signal, and high-current capacitor conduction circuit 144 can disconnect based on this first disconnect signal. Simultaneously, low-current capacitor time relay 3SJ outputs a third disconnect signal, which is received by the control terminal of low-current capacitor contactor DJ2B, and low-current capacitor conduction circuit 143 can disconnect based on this third disconnect signal. Therefore, if a power grid failure occurs, the user can manually disconnect high-current capacitor conduction circuit 144 and low-current capacitor conduction circuit 143, effectively preventing damage to the drive circuit or elevator caused by the carbon-based capacitor failure.

[0062] This invention provides an elevator power supply system with energy storage function. The system includes a power supply module, a carbon-based capacitor module, a control module, and a switch module. The control module can activate and output a first activation signal based on an activation signal. The switch module, based on this first activation signal, activates a small-current conduction circuit in the power grid and a small-current conduction circuit in the capacitor. Thus, the small-current conduction circuit in the power grid and the small-current conduction circuit in the capacitor can transmit the power supply voltage to the carbon-based capacitor module. Furthermore, the charging operation of the carbon-based capacitor module by the power supply voltage ensures that the carbon-based capacitor has sufficient charge, guaranteeing normal operation of the control module during power outages. After a first start-up delay, the control module outputs a second activation signal, and the switch module, based on this second activation signal, activates a large-current conduction circuit in the power grid. Therefore, the power supply module can output power supply voltage to the elevator. Thus, the elevator can quickly start and operate normally based on the power supply voltage. In this elevator power supply system with energy storage function, the control module is activated first, and then power is supplied to the elevator, ensuring that the elevator control module's start-up time is earlier than the elevator's start-up time. Therefore, the elevator only operates when a control command is received. Therefore, the elevator is less prone to loss of control during operation, making it safer for users. This effectively solves the technical problem of poor safety in existing elevators. After a second delay in the start-up time, the control module outputs a third start signal. Based on this third start signal, the switching module connects the small current conduction circuit of the power grid, allowing the carbon-based capacitor module to regulate the capacitor voltage output by the elevator. This capacitor voltage can be used to adjust the power supply voltage, making the voltage output to the elevator more stable, thus enabling the elevator to maintain a stable operating state.

[0063] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. An elevator power supply system with energy storage function, characterized in that, It includes: The power supply module includes a power supply connection unit, which generates a connection signal, and the power supply module outputs a power supply voltage based on the connection signal. A carbon-based capacitor module is used to store energy from the supply voltage to generate a capacitor voltage. The control module is configured to activate the control module based on the connection signal, output a first activation signal, output a second activation signal after a first activation time delay, and output a third activation signal after a second activation time delay. The switching module is used to connect the low-current conduction circuit of the power grid and the low-current conduction circuit of the capacitor based on the first turn-on signal; to connect the high-current conduction circuit of the power grid based on the second turn-on signal; and to connect the high-current conduction circuit of the capacitor based on the third turn-on signal. An output module is used to convert the DC power supply voltage and the capacitor voltage into an AC output voltage, and output the output voltage to the elevator; The power grid is supplying power normally, and the power grid provides power to the control module based on the power grid input contactor. Therefore, even if the high-current power grid circuit, the low-current power grid circuit, the low-current capacitor circuit, and the high-current capacitor circuit are all disconnected, the control module will not lose power; the control module will continue to work after a normal power outage, thus ensuring the stability of subsequent power supply. The control module includes a control input unit and a DC control power supply; the control input unit also includes a capacitor input contactor, which is connected in parallel with a power grid input contactor. In the event of a power outage, the control module will also activate the capacitor low-current conduction circuit and the capacitor input contactor to ensure that the carbon-based capacitor module continues to supply power to the elevator and the control module. Even if there is no current in the capacitor high-current conduction circuit and the capacitor low-current conduction circuit, the above power outage process ensures that the capacitor input contactor is the last to close. After all passengers have been transported out of the elevator, the control module will de-energize and disconnect the capacitor input contactor and the capacitor small current conduction circuit, at which point the control module will stop working.

2. The elevator power supply system with energy storage function according to claim 1, characterized in that, When the elevator power system with energy storage function is normally shut down, the control module outputs a first normal disconnection signal and outputs a second normal disconnection signal after a delay of the normal shutdown time. Based on the first normal disconnection signal, the switching module disconnects the high-current power grid circuit and the high-current capacitor circuit. Based on the second normal disconnect signal, the switching module disconnects the power grid low-current conduction circuit and the capacitor low-current conduction circuit.

3. The elevator power supply system with energy storage function according to claim 2, characterized in that, When the power grid fails, the power supply connection unit outputs a shutdown signal, the control module outputs a first abnormal disconnection signal based on the shutdown signal, the control module outputs a second abnormal disconnection signal after a delay of the first abnormal shutdown time, and the control module outputs a third abnormal disconnection signal after a delay of the second abnormal shutdown time. Based on the first abnormal disconnection signal, the switching module disconnects the high current conduction circuit and the low current conduction circuit of the power grid; Based on the second abnormal disconnection signal, the switching module disconnects the capacitor high-current conduction circuit; based on the third abnormal disconnection signal, the switching module disconnects the capacitor low-current conduction circuit.

4. The elevator power supply system with energy storage function according to claim 3, characterized in that, The switching unit includes a switching switch, which generates a switching signal when closed and a switching signal when open. The DC control power supply is used to power the control module. The control input unit includes a power grid input contactor, the input terminal of which is connected to the power supply module and the carbon-based capacitor module, the control terminal of which is connected to the switching switch, and the output terminal of which is connected to the DC control power supply. The control module includes a first control output unit, which includes a low-current time relay. The switching module includes a low-current conduction circuit, which includes a low-current contactor and a first current-limiting resistor. One end of the low-current time relay is connected to a DC control power supply, and the other end is connected to the control terminal of the low-current contactor. One end of the low-current contactor is connected to a power supply module, and the other end is connected to the first current-limiting resistor. The first current-limiting resistor is connected to the output module. The control module further includes a second control output unit, which includes a capacitor low-current time relay. The switch module includes the capacitor low-current conduction circuit, which includes a capacitor low-current contactor and a second current-limiting resistor. One end of the capacitor low-current time relay is connected to a DC control power supply, and the other end of the capacitor low-current time relay is connected to the control terminal of the capacitor low-current contactor. One end of the capacitor low-current contactor is connected to the power supply module, and the other end of the capacitor low-current contactor is connected to the second current-limiting resistor, which is connected to the output module. The input terminal of the capacitor input contactor is connected to the power supply module and the carbon-based capacitor module, the output terminal of the capacitor input contactor is connected to the DC control power supply, and the control terminal of the capacitor input contactor is connected to the capacitor low-current time relay. The control module further includes a third control output unit, which includes a high-current time relay for the power grid. The switching module includes a high-current conduction circuit for the power grid, which includes a high-current contactor for the power grid. One end of the high-current time relay for the power grid is connected to a DC control power supply, and the other end of the high-current time relay for the power grid is connected to the control terminal of the high-current contactor for the power grid. One end of the high-current contactor for the power grid is connected to the power supply module, and the other end of the high-current contactor for the power grid is connected to the output module. The control module further includes a fourth control output unit, which includes a high-current capacitor time relay. The switching module includes a high-current capacitor conduction circuit, which includes a high-current capacitor contactor. One end of the high-current capacitor time relay is connected to a DC control power supply, and the other end of the high-current capacitor time relay is connected to the control terminal of the high-current capacitor contactor. One end of the high-current capacitor contactor is connected to the power supply module, and the other end of the high-current capacitor contactor is connected to the output module.

5. The elevator power supply system with energy storage function according to claim 4, characterized in that, When the grid input voltage is applied, the switch closes, the switch generates the connection signal, the control terminal of the grid input contactor receives the connection signal, the grid input contactor is turned on, the control module is started, and the control module drives the capacitor low-current time relay and the grid low-current time relay to turn on. The capacitor low-current time relay and the grid low-current time relay output the first opening signal. The control terminal of the grid low-current contactor receives the first opening signal. The grid low-current conduction circuit is turned on. The control terminal of the capacitor low-current contactor receives the first opening signal. The capacitor low-current conduction circuit is turned on. The switching module transmits the power supply voltage to the carbon-based capacitor module through the capacitor low-current conduction circuit and the grid low-current conduction circuit. Furthermore, the control terminal of the capacitor input contactor receives the first activation signal, and the capacitor input contactor is turned on.

6. The elevator power supply system with energy storage function according to claim 4, characterized in that, After the capacitor low-current time relay and the grid low-current time relay are connected, the first start time is delayed. The control module drives the grid high-current time relay to conduct. The grid high-current time relay outputs a second start signal. The control terminal of the grid high-current contactor receives the second start signal. The grid high-current conduction circuit is connected. The switch module transmits the power supply voltage to the output module through the grid high-current conduction circuit.

7. The elevator power supply system with energy storage function according to claim 4, characterized in that, After the high-current time relay of the power grid is turned on, the second start time is delayed. The control module drives the high-current time relay of the capacitor to conduct. The high-current time relay of the capacitor outputs a third start signal. The control terminal of the high-current contactor of the capacitor receives the third start signal. The high-current conduction circuit of the capacitor is turned on. The switching module transmits the capacitor voltage to the output module through the high-current conduction circuit of the capacitor.

8. The elevator power supply system with energy storage function according to claim 4, characterized in that, When the elevator power system with energy storage function is normally shut down, the capacitor high-current time relay and the grid high-current time relay output the first normal disconnection signal. The control terminal of the grid high-current contactor receives the first normal disconnection signal, and the grid high-current conduction circuit is disconnected. The control terminal of the capacitor high-current contactor receives the first normal disconnection signal, and the capacitor high-current conduction circuit is disconnected. The switching module transmits the capacitor voltage to the output module through the capacitor low-current conduction circuit. After the high-current capacitor time relay and the high-current grid time relay are disconnected, the normal shutdown time is delayed. The control module then controls the low-current grid time relay to disconnect, and the low-current grid time relay outputs the second normal disconnect signal. The control terminal of the low-current grid contactor receives the second normal disconnect signal, and the low-current grid conduction circuit is disconnected. Furthermore, the control module controls the low-current capacitor time relay to disconnect, and the low-current capacitor time relay outputs the second normal disconnect signal. The control terminal of the low-current capacitor contactor receives the second normal disconnect signal, and the low-current capacitor conduction circuit is disconnected. The control terminal of the capacitor input contactor also receives the second normal disconnect signal, and the capacitor input contactor disconnects.

9. The elevator power supply system with energy storage function according to claim 4, characterized in that, When the power grid stops input voltage, the switching switch opens, generating a shutdown signal. The control terminal of the power grid input contactor receives the shutdown signal, causing the power grid input contactor to open. The control module controls the power grid low-current time relay and the power grid high-current time relay to close. The power grid low-current time relay and the power grid high-current time relay output the first abnormal disconnection signal. The control terminal of the power grid high-current contactor receives the first abnormal disconnection signal, causing the power grid high-current conduction circuit to open. The control terminal of the power grid low-current contactor receives the first abnormal disconnection signal, causing the power grid low-current conduction circuit to open. The switching module transmits the capacitor voltage to the output module through the capacitor low-current conduction circuit. After the low current time relay and the high current time relay of the power grid are disconnected, the first abnormal shutdown time is delayed. The control module controls the high current time relay of the capacitor to disconnect. The high current time relay of the capacitor outputs the second abnormal disconnect signal. The control terminal of the high current contactor of the capacitor receives the second abnormal disconnect signal. The high current conduction circuit of the capacitor is disconnected. After the high-current capacitor time relay is disconnected, the second abnormal shutdown time is delayed. The control module controls the low-current capacitor time relay to disconnect, and the low-current capacitor time relay outputs the third abnormal disconnect signal. The control terminal of the low-current capacitor contactor receives the third abnormal disconnect signal, the low-current capacitor conduction circuit is disconnected, and the control terminal of the capacitor input contactor receives the third abnormal disconnect signal, and the capacitor input contactor is disconnected.

10. The elevator power supply system with energy storage function according to claim 4, characterized in that, The control module also includes a power grid control unit, which includes a power grid control relay. One end of the power grid control relay is connected to a DC control power supply, and the other end of the power grid control relay is connected to the control terminal of the high current time relay and the control terminal of the low current time relay. When a power grid fault occurs, the power grid control relay disconnects and outputs a first disconnection signal. The control terminals of the high-current time relay and the low-current time relay receive the first disconnection signal, causing both the high-current and low-current time relays to disconnect. The high-current time relay outputs a first abnormal disconnection signal, and the control terminal of the high-current contactor receives the first abnormal disconnection signal, causing the high-current conduction circuit to disconnect. The low-current time relay outputs a second abnormal disconnection signal, and the control terminal of the low-current contactor receives the second abnormal disconnection signal, causing the low-current conduction circuit to disconnect. The control module further includes a capacitor control unit, which includes a capacitor control relay. One end of the capacitor control relay is connected to a DC control power supply, and the other end of the capacitor control relay is connected to the control terminal of the high-current capacitor time relay and the control terminal of the low-current capacitor time relay. When the carbon-based capacitor fails, the capacitor control relay disconnects and outputs a second cut-off signal. The control terminals of the high-current capacitor time relay and the low-current capacitor time relay receive the second cut-off signal, causing both the high-current capacitor time relay and the low-current capacitor time relay to disconnect. The high-current capacitor time relay outputs a first abnormal disconnect signal, and the control terminal of the high-current capacitor contactor receives the first abnormal disconnect signal, thus disconnecting the high-current capacitor conduction circuit. The low-current capacitor time relay outputs a third abnormal disconnect signal, and the control terminal of the low-current capacitor contactor receives the third abnormal disconnect signal, thus disconnecting the low-current capacitor conduction circuit.

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