Elevator power supply system with energy storage function

Abstract

The utility model provides an elevator power supply system with an energy storage function, a power supply module outputs power supply voltage based on a connection signal, and a carbon-based capacitor module generates capacitor voltage based on the power supply voltage. The control module sequentially outputs a first opening signal, a second opening signal and a third opening signal based on the connection signal. The power grid low-current conduction circuit and the capacitor low-current conduction circuit are switched on based on a first switching-on signal; the power grid large-current conduction circuit is switched on based on the second starting signal; and the capacitor large-current conduction circuit is switched on based on the third opening signal. The control module is powered off based on the third disconnection signal, and the output module outputs the output voltage to the elevator.

Description

Technical Field

[0001] The utility model relates to the field of circuits, in particular to an elevator power supply system with an energy storage function. Background Art

[0002] In modern society, elevators are widely used in a variety of living places, such as residences, shopping malls, etc. Existing elevators are provided with a driving power supply and a control power supply. The driving power supply is used to maintain the operation of the elevator, and the control power supply is used to send control instructions such as the rise and fall of the elevator.

[0003] However, the elevator drive power supply and the elevator control power supply are both powered separately through the power grid; 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 the start-up time of the elevator drive power supply, the elevator will run without control instructions, which may cause safety problems for the elevator.

[0004] Therefore, it is necessary to provide an elevator power supply system with energy storage function to solve the above technical problems. Utility Model Content

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

[0006] The utility model provides an elevator power supply system with energy storage function, which comprises:

[0007] A power supply module, comprising a power supply connection unit, the power supply connection unit is used to generate a connection signal, and the power supply module is used to output a supply voltage based on the connection signal;

[0008] A surge voltage absorption module, connected to the power supply module, for preventing surge voltage from damaging the power supply module;

[0009] A carbon-based capacitor module, used for performing energy storage operation on the supply voltage to generate a capacitor voltage;

[0010] A control module, comprising a first control unit, a second control unit, a third control unit, and a fourth control unit. Based on the switch-on signal, the control module is started, the first control unit and the second control unit output a first start signal, the third control unit outputs a second start signal, and the fourth control unit outputs a third start signal;

[0011] The switch module comprises a grid small current conduction circuit, a capacitor small current conduction circuit, a grid large current conduction circuit and the capacitor large current conduction circuit; the input end of the grid small current conduction circuit is connected to the power supply module, and the output end of the grid small current conduction circuit is connected to the output module; the grid large current conduction circuit is connected in parallel with the grid small current conduction circuit; the input end of the capacitor small current conduction circuit is connected to the power supply module, and the output end of the capacitor small current conduction circuit is connected to the output module; the capacitor large current conduction circuit is connected in parallel with the capacitor small current conduction circuit;

[0012] Based on the first start signal, the grid small current conduction circuit and the capacitor small current conduction circuit are in a conduction state; based on the second start signal, the grid large current conduction circuit is in a conduction state; based on the third start signal, the capacitor large current conduction circuit is in a conduction state;

[0013] 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.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides an elevator power supply system with energy storage function, which includes a power supply module, a carbon-based capacitor module, a control module, and a switch module. The control module includes a first control unit, a second control unit, a third control unit, and a fourth control unit, and the control module can be started based on a connection signal. The control module outputs a first start signal through the first control unit and the second control unit, and the switch module connects the grid small current conduction circuit and the capacitor small current conduction circuit based on the first start signal. Thus, the grid small current conduction circuit and the capacitor small current conduction circuit can transmit the supply voltage to the carbon-based capacitor module. Therefore, the charging operation of the carbon-based capacitor module by the supply voltage enables the carbon-based capacitor to have sufficient power, which can ensure that the control module can be used normally when the power is off. After delaying the first start time, the control module outputs a second start signal through the third control unit, and the switch module connects the grid large current conduction circuit based on the second start signal. Therefore, the power supply module can output the supply voltage to the elevator. Thus, the elevator can start quickly and work normally based on the supply voltage. In the elevator power supply system with energy storage function of the present invention, the control module is turned on first, and then the elevator is powered on, so that the start-up time of the elevator control module is earlier than the start-up time of the elevator. Therefore, the elevator will only run when there is a control instruction. Therefore, it is not easy for the elevator to get out of control during operation, and it is safer for users to use the elevator. The technical problem that the existing elevators have poor safety is effectively solved. After delaying the second start-up time, the control module outputs a third start signal through the fourth control unit. The switch module connects the small current conduction circuit of the power grid based on the third start signal, so that the carbon-based capacitor module can output the capacitor voltage to the elevator. The capacitor voltage can be used to adjust the power supply voltage, so that the voltage output to the elevator is more stable, so that the elevator can maintain a stable working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a block diagram of an elevator power supply system with energy storage function.

[0016] Figure 2 The utility model is a circuit diagram of an elevator power supply system with energy storage function.

[0017] In the figure, 10, an elevator power supply system with energy storage function; 11, a power supply module; 111, a power supply connection unit; 12, a carbon-based capacitor module; 121, a carbon-based capacitor power supply; 13, a control module; 131, a first control unit; 132, a second control unit; 133, a third control unit; 134, a fourth control unit; 135, a first indication unit; 136, a second indication unit; 137, a power grid control unit; 138, a capacitor control unit; 139, a control input unit; 14, a switch module; 141, a power grid small current conduction circuit; 142, a power grid large current conduction circuit; 143, a capacitor small current conduction circuit; 144, a capacitor large current conduction circuit; 15, an output module; 151, a test unit; 152, a brake unit; 153, an inverter unit; 1531, a U-phase branch; 1532, a buffer circuit; 1533, a V-phase branch; 1534, a W-phase branch. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0019] Directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are only used for reference to the directions of the drawings. The directional terms used are used to illustrate and understand the present invention, and are not used to limit the present invention.

[0020] The words "first", "second" and the like in the terminology of the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, and should not be construed as limiting the order of precedence.

[0021] In the figures, structurally similar elements are denoted by the same reference numerals.

[0022] Please refer to Figure 1 and Figure 2The utility model provides an elevator power supply system 10 with energy storage function, which 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, and the power grid 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, and a switching power supply controller U3. One end of the power supply switch K2 is connected to the power grid, and the other end of the power supply switch K2 is connected to the input end of the high-frequency switching power supply U4. The output end of the high-frequency switching power supply U4 is connected to the power grid small current conduction circuit 141 and the power grid large current conduction circuit 142, and the high-frequency switching power supply U4 can convert the AC voltage input from the power grid into a DC voltage. The input end of the power converter U1 is connected in parallel between the power supply switch K2 and the input end of the high-frequency switching power supply U4, and the output end of the power converter U1 is connected to the switching power supply controller U3. The power converter U1 is used to convert the AC voltage input from the power grid into a DC voltage. The power converter U1 can convert the 380V AC voltage into a 24V DC voltage. In addition, the power converter U1 can also supply power to the switching power supply controller U3. The switching power supply controller U3 is connected to the control end of the high-frequency switching power supply U4, and the switching power supply controller U3 can control the opening and closing of the switching power supply controller U3. The elevator power supply system 10 with energy storage function also includes a surge voltage absorption module SPD1, and the surge voltage absorption module SPD1 is connected to the power supply module 11. Specifically, the surge voltage absorption module SPD1 is connected in parallel between the power switch K2 and the high-frequency switching power supply U4, and the surge voltage absorption circuit SPD1 is used to prevent the surge voltage from damaging the power supply module 11.

[0023] Please refer to Figure 1 and Figure 2 The power supply module 11 includes a power supply connection unit 111, which is used to generate a connection signal and a shutdown signal. The power supply connection unit 111 includes a connection switch SA1, which is connected to the output end of the power converter U1. When the connection switch SA1 is closed, the power supply connection unit 111 generates a connection signal. When the connection switch SA1 is disconnected, the power supply connection unit 111 generates a shutdown signal. Based on the connection signal, the power supply module 11 can output a supply voltage through the high-frequency switching power supply U4.

[0024] Please refer to Figure 1 and Figure 2, the carbon-based capacitor module 12 is used to store energy for the power supply voltage, and the carbon-based capacitor module 12 can generate a 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 pole of the carbon-based capacitor power supply 121 is connected to the capacitor low current conduction circuit 143 and the capacitor high current conduction circuit 144, and the negative pole of the carbon-based capacitor power supply 121 is grounded. The first fuse switch FU1 is connected between the positive pole of the carbon-based capacitor power supply 121 and the capacitor low current conduction circuit 143, the DC transformer CT is connected between the negative pole of the carbon-based capacitor power supply 121 and the ground terminal, and the second fuse switch FU2 is connected between the negative pole of the carbon-based capacitor power supply 121 and the DC transformer CT. In addition, one end of the first DC surge protector SPD2 is connected to the positive pole of the carbon-based capacitor power supply 121, and the other end of the first DC surge protector SPD2 is grounded.

[0025] Please refer to Figure 1 and Figure 2 , the control module 13 includes a first control unit 131, a second control unit 132, a third control unit 133, and a fourth control unit 134. Moreover, the switch module 14 includes a power grid small current conduction circuit 141, a capacitor small current conduction circuit 143, a power grid large current conduction circuit 142, and a capacitor large current conduction circuit 144. The input end of the power grid small current conduction circuit 141 is connected to the power supply module 11, the output end of the power grid small current conduction circuit 141 is connected to the output module 15, and the power grid large current conduction circuit 142 is connected in parallel with the power grid small current conduction circuit 141. The input end of the capacitor small current conduction circuit 143 is connected to the power supply module 11, the output end of the capacitor small current conduction circuit 143 is connected to the output module 15, and the capacitor large current conduction circuit 144 is connected in parallel with the capacitor small current conduction circuit 143.

[0026] Please refer to Figure 1 and Figure 2 , the control module 13 can be started based on the switch-on signal. Thus, the control module 13 can output a first start-up signal through the first control unit 131 and the second control unit 132. Based on the first start-up signal, the switch module 14 can connect the grid small current conduction circuit 141 and the capacitor small current conduction circuit 143. After delaying the first start-up time, the control module 13 can output a second start-up signal through the third control unit 133. Based on the second start-up signal, the switch module 14 can connect the grid large current conduction circuit 142. After delaying the second start-up time, the control module 13 can output a third start-up signal through the fourth control unit 144. Based on the third start-up signal, the switch module 14 can connect the capacitor large current conduction circuit 144.

[0027] Please refer to Figure 1 and Figure 2When the elevator power supply system 10 with energy storage function is normally shut down, the control module 13 outputs a first normal disconnection signal. Based on the first normal disconnection signal, the switch module 14 disconnects the grid large current conduction circuit 142 and the capacitor large current conduction circuit 144. After the normal shutdown time is delayed, the control module 13 outputs a second normal disconnection signal. Based on the second normal disconnection signal, the switch module 14 disconnects the grid small current conduction circuit 141 and the capacitor small current conduction circuit 143.

[0028] Please refer to Figure 1 and Figure 2 When the power grid is out of power, the power supply connection unit is used to output 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 power grid large current conduction circuit 142 and the power grid small current conduction circuit 141. After delaying 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 capacitor large current conduction circuit 144. After delaying 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 capacitor small current conduction circuit 143.

[0029] 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, and the DC control power supply U2 is used to power the control module. The DC control power supply U2 can output a DC voltage of 24V. The control input unit 139 includes a power grid input contactor 1DJ, and the input end of the power grid input contactor 1DJ is connected to the power supply module 11 and the carbon-based capacitor module 12. The control end of the power grid input contactor 1DJ is connected to the switch SA1, and the output end of the power grid input contactor 1DJ is connected to the DC control power supply U2.

[0030] Please refer to Figure 1 and Figure 2 , the first control unit 131 includes a grid low current time relay 1SJ. The switch module 14 includes a grid low current conduction circuit 141, and the grid low current conduction circuit includes a grid low current contactor DJ1 B and a first current limiting resistor R1. One end of the capacitor low current time relay DJ1B is connected to the DC control power supply U2, and the other end of the grid low current time relay 1SJ is connected to the control end of the grid low current contactor DJ1B. One end of the grid low current contactor DJ1B is connected to the power supply module, and the other end of the grid low current contactor DJ1B is connected to the first current limiting resistor R1, and the first current limiting resistor R1 is connected to the output module 15.

[0031] Please refer to Figure 1 and Figure 2, the second control unit 132 includes a capacitor low current time relay 3SJ. The switch module 14 includes a capacitor low current conduction circuit 143, and the capacitor low current conduction circuit 143 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 of the capacitor low current time relay DJ2B is connected to the control end 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 of the capacitor low current contactor 3SJ is connected to the second current limiting resistor R2, and the second current limiting resistor R2 is connected to the output module 15.

[0032] 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 grid input contactor 1DJ. The input end of the capacitor input contactor 2DJ is connected to the power supply module 11 and the carbon-based capacitor module 12, the output end of the capacitor input contactor 2DJ is connected to the DC control power supply U2, and the control end of the capacitor input contactor 2DJ is connected to the capacitor low current time relay DJ2B.

[0033] Please refer to Figure 1 and Figure 2 , the third control unit 133 includes a power grid high current time relay 2SJ. The switch module 14 includes a power grid high current conduction circuit 142, and the power grid high current conduction circuit 142 includes a power grid high current contactor DJ1A. One end of the capacitor high current time relay 2SJ is connected to the DC control power supply U2, and the other end of the power grid high current time relay 2SJ is connected to the control end of the power grid high current contactor DJ1A. One end of the power grid high current contactor DJ1A is connected to the power supply module 11, and the other end of the power grid high current contactor DJ1A is connected to the output module 15.

[0034] Please refer to Figure 1 and Figure 2, the fourth control unit 134 includes a capacitor high current time relay 4SJ. The switch module 14 includes a capacitor high current conduction circuit 144, and the capacitor high current conduction circuit 144 includes a capacitor high current contactor DJ2A. One end of the capacitor high current time relay 4SJ is connected to the DC control power supply U2, and the other end of the capacitor high current time relay 4SJ is connected to the control end of the capacitor high current contactor DJ2A. One end of the capacitor high current contactor DJ2A is connected to the power supply module 11, and the other end of the capacitor high current contactor DJ2A is connected to the output module 11. The control module 13 includes a third fuse switch K4, one end of the third fuse switch K4 is connected to the first fuse switch K1, and the other end of the third fuse switch K4 is connected to the grid 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 .

[0035] Please refer to Figure 1 and Figure 2 The control module 13 also includes a first indication unit 135, and the first indication unit 135 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, the other end of the first intermediate relay 20ZJ is connected to the first indicator light L0, and the control end of the first intermediate relay 20ZJ is connected to the power grid. When the power grid inputs voltage, the first intermediate relay 20ZJ will be turned on, so that the first indicator light will light up. In addition, the lighting of the first indicator light L0 indicates that the voltage of the power grid has been connected to the elevator power supply system 10 with energy storage function.

[0036] Please refer to Figure 1 and Figure 2 , the control module 13 also includes a second indication unit 136, and the second indication unit 136 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 of the second intermediate relay 21ZJ is connected to the second indicator light L1. The control end of the second intermediate relay 21ZJ is connected between the control end of the power grid high current time relay 2SJ and the control end of the power grid high current contactor DJ1A. When the power grid high current time relay 2SJ is turned on, the power grid high current time relay 2SJ outputs a second start signal. The control end of the second intermediate relay 21ZJ receives the second start signal, and the second start signal can drive the second intermediate relay 21ZJ to turn on, so that the second indicator light L1 will light up. In addition, the lighting of the second indicator light L1 indicates that the output module 15 has received the power supply voltage.

[0037] Please refer to Figure 1 and Figure 2 The control module 13 also includes a power grid control unit 137, and the power grid control unit 137 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 of the power grid control relay 6ZJ is connected to the control end of the power grid high current time relay 2SJ and the control end of the power grid 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 of the first buzzer control switch 6ZJA is connected to the buzzer HA.

[0038] When the power grid fails, the power grid control relay 6ZJ will be disconnected, so that the power grid control relay 6ZJ outputs a first disconnection signal. The control end of the power grid high current time relay 2SJ and the control end of the power grid low current time relay 1SJ receive the first disconnection signal, and then the power grid high current time relay 2SJ and the power grid low current time relay 1SJ will be disconnected. Further, the power grid high current time relay 2SJ outputs a first disconnection signal. The control end of the power grid high current contactor DJ1A receives the first disconnection signal, and the power grid high current conduction circuit 142 can be disconnected based on the first disconnection signal. And, the power grid low current time relay 1SJ will output a second disconnection signal. The control end of the power grid low current contactor DJ1B receives the second disconnection signal, and the power grid low current conduction circuit 142 is disconnected based on the second disconnection signal. At the same time, the first buzzer control switch 6ZJA will be closed, so that the buzzer HA is turned on and an alarm is sounded.

[0039] Please refer to Figure 1 and Figure 2 The control module 13 also includes a capacitor control unit 138, and the capacitor control unit 138 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 of the capacitor control relay 7ZJ is connected to the control end of the capacitor large current time relay 4SJ and the control end of the capacitor small current time relay 3SJ. The control module 13 also includes a second buzzer control switch 7ZJA, one end of the second buzzer control switch 7ZJA is connected to the DC control power supply U2, and the other end of the second buzzer control switch 7ZJA is connected to the buzzer HA. The control module 13 also includes a switching switch SA2, one end of the switching switch SA2 is connected to the DC control power supply U2, and the other end of the switching switch SA2 is connected between the voltage control relay 6ZJ and the capacitor control relay 7ZJ.

[0040] When the carbon-based capacitor fails, the capacitor control relay 7ZJ will be disconnected, so that the capacitor control relay 7ZJ will output a second disconnection signal. The control end of the capacitor high current time relay 4SJ and the control end of the capacitor low current time relay 3SJ receive the second disconnection signal, and then the capacitor high current time relay 4SJ and the capacitor low current time relay 3SJ are disconnected. Further, the capacitor high current time relay 4SJ will output a first disconnection signal. The control end of the capacitor high current contactor DJ2A receives the first disconnection signal, and the capacitor high current conduction circuit 144 can be disconnected based on the first disconnection signal. And, the capacitor network low current time relay 3SJ will output a third disconnection signal. The control end of the capacitor low current contactor DJ2B will receive the third disconnection signal, and the capacitor low current conduction circuit 143 can be disconnected based on the third disconnection signal. At the same time, the second buzzer control switch 7ZJA will be closed, so that the buzzer HA is turned on and an alarm is sounded.

[0041] Please refer to Figure 1 and Figure 2 , the output module 15 is used to convert the DC supply voltage and capacitor voltage into an AC output voltage, and the output module 15 can transmit the output voltage to the elevator. The output module 15 includes a test unit 151, and the test unit 151 includes 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 the grid low-current contactor DJ1A, the other end of the first charging capacitor Cp is connected to one end of the second charging capacitor Cn, and the other end of the second charging capacitor Cn is grounded. One end of the third charging capacitor is connected to the grid low-current contactor DJ1A, the other end of the third charging capacitor Cp1 is connected to one end of the fourth charging capacitor Cn1, and the other end of the fourth charging capacitor Cn1 is grounded. Among them, the connection end of the third charging capacitor Cp1 and the fourth charging capacitor Cn1 is connected to the connection end of the first charging capacitor Cp and the second charging capacitor Cn.

[0042] Please refer to Figure 1 and Figure 2 , one end of the first charging current limiting resistor Rp is connected to the grid low current contactor DJ1A, and the other end of the first charging current limiting resistor 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, wherein the connection end of the first charging current limiting resistor Rp and the second charging current limiting resistor Rn is connected to the connection end of the third charging capacitor Cp1 and the fourth charging capacitor Cn1. In theory, this part of the charging capacitor can be cancelled, but it is recommended to keep it first during the test phase. During the test process, it can be used to compare the difference between canceling and retaining this capacitor on the circuit.

[0043] Please refer to Figure 1 and Figure 2, the output module includes a braking unit 152 and an inverter unit 153, and 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 the low-current contactor DJ1A of the power grid, and the other end of the braking resistor Ra 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 suspended. The positive pole of the diode D1 is connected to the low-current contactor DJ1A of the power grid, and the negative pole of the diode D1 is connected to the collector of the transistor Ta. The resistor FU is connected to the positive pole of the diode D1. Because the braking unit 152 is provided with a braking resistor Ra, when the elevator is in danger, the elevator power supply system 10 with energy storage function can perform emergency braking on the elevator through the braking unit 152. Therefore, it is safer for users to use an elevator with this drive circuit.

[0044] Please refer to Figure 1 and Figure 2 , the inverter unit 153 is used to invert the DC voltage into an AC voltage. In addition, the inverter unit 153 is connected to the elevator, so that the inverter unit 153 can transmit the 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 the resistor FU, the other end of one end of the U-phase branch 1531 is connected to the buffer circuit 1532, and the connection end of the U-phase branch 1531 and the buffer circuit 1532 is connected to the elevator. The U-phase branch 1531, the V-phase branch 1533 and the W-phase branch 1534 are connected in parallel, and the V-phase branch 1533 and the W-phase branch 1534 are respectively connected to the elevator.

[0045] Please refer to Figure 1 and Figure 2 , when the grid input voltage is on, the switch SA1 will be closed, and the switch SA1 can generate a switch-on signal. The control end of the grid input contactor 1DJ can receive the switch-on signal, and the switch-on signal can drive the grid input contactor 1DJ to turn on. Thus, the control module 13 is started, and the control module 13 drives the capacitor small current time relay 1SJ and the grid small current time relay 3SJ to turn on. The capacitor small current time relay 1SJ and the grid small current time relay 3SJ can output a first start signal, and the control end of the grid small current contactor DJ2B receives the first start signal, and the first start signal drives the grid small current conduction circuit 141 to turn on. At the same time, the control end of the capacitor small current contactor DJ1B receives the first start signal, and the first start signal drives the capacitor small current conduction circuit 143 to turn on. The switch module 14 transmits the power supply voltage to the carbon-based capacitor module 12 through the grid small current conduction circuit 141 and the capacitor small current conduction circuit 143, and the control end of the capacitor input contactor 2DJ receives a first start signal, which can drive the capacitor input contactor 2DJ to conduct.

[0046] Please refer to Figure 1 and Figure 2 When the capacitor low current time relay 3SJ and the grid low current time relay 1SJ are connected, the control module 13 will delay the first start time. After that, the control module 13 can drive the grid high current time relay 2SJ to turn on. Among them, the first start time can be 2 seconds. The grid high current time relay 2SJ can output a second start signal, and the control end of the grid high current contactor DJ1A receives the second start signal. The start signal can drive the grid high current conduction circuit 142 to turn on, and the switch module 14 transmits the power supply voltage to the output module 15 through the grid high current conduction circuit 142.

[0047] Please refer to Figure 1 and Figure 2 , when the grid high current time relay 2SJ is turned on, the control module 13 delays the second start time. Afterwards, the control module 13 drives the capacitor high current time relay 4SJ to turn on, wherein the second start time can be 1 second. The capacitor high current time relay 4SJ outputs a third start signal, and the control end of the capacitor high current contactor DJ2A receives the third start signal. The third start signal can drive the capacitor high current conduction circuit 144 to turn on, and the switch module 14 transmits the capacitor voltage to the output module 15 through the capacitor high current conduction circuit 144.

[0048] Please refer to Figure 1 and Figure 2 When the elevator power supply system 10 with energy storage function is shut down normally, the capacitor high current time relay 4SJ and the grid high current time relay 2SJ output the first normal disconnection signal. The control end of the grid high current contactor DJ1A receives the first normal disconnection signal, and the grid high current conduction circuit 142 is disconnected based on the first normal disconnection signal. The control end of the capacitor high current contactor 4SJ receives the first normal disconnection signal, and the capacitor high current conduction circuit 144 can be disconnected based on the first normal disconnection signal. Moreover, the switch module 14 transmits the capacitor voltage to the output module 15 through the capacitor low current conduction circuit 143.

[0049] When the capacitor high current time relay 4SJ and the grid high current time relay 2SJ are disconnected, the control module 13 can delay the normal shutdown time. After that, the control module 13 controls the grid low current time relay 1SJ to disconnect. The grid low current time relay 1SJ outputs a second normal disconnection signal, the control end of the grid low current contactor DJ1B receives the second normal disconnection signal, and the grid low current conduction circuit 141 disconnects based on the second normal disconnection signal. In addition, the control module 13 controls the capacitor low current time relay 3SJ to disconnect. The capacitor low current time relay 3SJ outputs a second normal disconnection signal, the control end of the capacitor low current contactor DJ2B receives the second normal disconnection signal, and the capacitor low current conduction circuit 143 can be disconnected based on the second disconnection signal. And the control end of the capacitor input contactor 2DJ receives the second normal disconnection signal, and the capacitor input contactor 2DJ can be disconnected based on the second normal disconnection signal. The normal shutdown of the elevator means that the elevator power supply is manually shut down, so that people can repair the elevator. At this time, the power grid is supplying 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 power grid high current conduction circuit, the power grid low current conduction circuit, the capacitor low current conduction circuit, and the capacitor high current conduction circuit are all disconnected, the control module will not be powered off. The control module continues to work after normal power failure, thereby ensuring the stability of subsequent power-on. When the control module 13 is working normally, the elevator can also work normally quickly after power is turned on.

[0050] Please refer to Figure 1 and Figure 2 , when the grid stops inputting voltage, the power supply module 11 can disconnect the switch SA1. Thus, the switch SA1 can generate a shutdown signal. The control end of the grid input contactor 1DJ receives the shutdown signal, and the grid input contactor 1DJ disconnects based on the shutdown signal. In addition, the control module 13 can control the grid low current time relay 1SJ and the grid high current time relay 2SJ to shut down. The grid low current time relay 1SJ and the grid high current time relay 2SJ output a first abnormal disconnection signal, the control end of the grid high current contactor DJ1A receives the first abnormal disconnection signal, and the grid high current conduction circuit 142 disconnects based on the first disconnection signal. Moreover, the control end of the grid low current contactor DJ1B also receives the first disconnection signal, and the grid low current conduction circuit 141 can be disconnected based on the 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.

[0051] Please refer to Figure 1 and Figure 2When the grid low current time relay 1SJ and the grid high current time relay 2SJ are disconnected, the control module 13 can delay the first abnormal shutdown time. After that, the control module 13 controls the capacitor high current time relay 4SJ to disconnect. The capacitor high current time relay 4SJ outputs a second abnormal disconnection signal, the control end of the capacitor high current contactor DJ2A receives the second disconnection signal, and the grid low current conduction circuit 144 can be disconnected based on the second abnormal disconnection signal.

[0052] Please refer to Figure 1 and Figure 2 , when the capacitor high current time relay 4SJ is disconnected, the control module 13 can delay the second abnormal shutdown time. After that, the control module 13 controls the capacitor low current time relay 3SJ to disconnect. The capacitor low current time relay 3SJ outputs a third disconnection signal, the control end of the capacitor low current contactor DJ2B receives the third abnormal disconnection signal, and the capacitor low current conduction circuit 143 can be disconnected based on the third abnormal disconnection signal. In addition, the control end of the capacitor input contactor 2DJ receives the third abnormal disconnection signal, and the capacitor input contactor 2DJ will also be disconnected based on the third abnormal disconnection signal. If a power outage occurs in the power grid, the control module 13 can also drive the capacitor low current conduction circuit 143 and the capacitor input trigger 2DJ to conduct, so 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 capacitor high current conduction circuit and the capacitor low current conduction circuit, the above power-off process can ensure that the capacitor input trigger 2DJ is the last to be closed. Moreover, the carbon-based capacitor power supply 121 can maintain the normal use of the control module 13 and the elevator during the power outage stage of the power grid. After the power grid is powered off, the power of the carbon-based capacitor power supply 121 can meet the elevator's continuous full-length operation for two times. Thus, the elevator can ensure that all passengers are sent out in time when the power grid is powered off. After the elevator sends out all the passengers, the control module 13 will power off and drive the capacitor input trigger 2DJ and the capacitor small current conduction circuit 143 to disconnect. At this time, the elevator will stop working. That is, the control module 13 will stop working after the elevator sends the passengers to a safe location. Or when the power of the carbon-based capacitor power supply 121 is insufficient, the control module 13 will stop working.

[0053] The working principle of the utility model is as follows: when the power grid inputs voltage, the elevator power supply system 10 with energy storage function can drive the power supply switch K2 to close, and the third fuse switch K4 is in a closed state. In addition, the power supply module 11 can drive the switch SA1 to close, and the elevator power supply system 10 with energy storage function can also drive the switching switch SA2, the power grid control relay 6ZJ and the capacitor control relay 7ZJ to close. At the same time, the control end of the first intermediate relay 20ZJ can receive the voltage input from the power grid. Thus, the first intermediate relay 20ZJ will be turned on. After the first intermediate relay 20ZJ is turned on, the first indicator light L0 will light up.

[0054] Then, the switch SA1 can generate a connection signal, and the control end of the grid input contactor 1DJ receives the connection signal. Subsequently, the grid input contactor 1DJ will be turned on and start the control module 13. Because the control module 13 is started, the control module 13 can drive the capacitor small current time relay 1SJ and the grid small current time relay 3SJ to turn on. Then, the capacitor small current time relay 1SJ and the grid small current time relay 3SJ output the first start signal. The control end of the grid small current contactor DJ1B receives the first start signal, and the grid small current conduction circuit 141 can be turned on based on the first start signal. At the same time, the control end of the capacitor small current contactor DJ2B receives the first start signal, and the capacitor small current conduction circuit 143 can be turned on based on the first start signal. The switch module 14 can transmit the power supply voltage to the carbon-based capacitor module 12 through the capacitor small current conduction circuit 143 and the grid small current conduction circuit 141, so the carbon-based capacitor module 12 performs energy storage operation on the power supply voltage. Thus, the carbon-based capacitor module 12 can generate a capacitor voltage. Furthermore, the control end of the capacitor input contactor 2DJ also receives the first start-up signal, and thus the capacitor input contactor 2DJ can be turned on based on the first start-up signal.

[0055] After the capacitor low current time relay 3SJ and the grid low current time relay 1SJ are connected, the control module 13 can delay the first start time. Then, the control module 13 drives the grid high current time relay 2SJ to turn on. Then, the grid high current time relay 2SJ outputs a second start signal. Subsequently, the control end of the grid high current contactor 2SJ receives the second start signal. Then, the grid high current conduction circuit 142 can be turned on based on the second start signal. At the same time, the control end 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 light up. Since the grid 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 grid 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. Then, the elevator can work normally.

[0056] After the grid 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 capacitor high current time relay 4SJ to turn on, and the capacitor high current time relay 4SJ can output a third start signal. Then, the control end of the capacitor high current contactor DJ2A receives the third start signal. Thus, the capacitor high current conduction circuit 144 is turned on based on the third start signal. Since the capacitor high current conduction circuit 144 is connected between the carbon-based capacitor module 12 and the output module 15, the switch module 14 can transmit the capacitor voltage to the output module 15 through the capacitor high current conduction circuit 144. The output module 15 can convert the DC capacitor voltage into an AC output voltage, and the capacitor voltage effectively regulates the output voltage.

[0057] When the elevator power supply system 10 with energy storage function is shut down normally, the capacitor high current time relay 4SJ and the grid high current time relay 2SJ output the first normal disconnection signal. Subsequently, the control end of the grid high current contactor DJ1A receives the first normal disconnection signal, and the grid high current conduction circuit 142 is disconnected based on the first normal disconnection signal. Next, the control end of the capacitor high current contactor 4SJ receives the first normal disconnection signal, and the capacitor high current conduction circuit 144 can be disconnected based on the first normal disconnection signal. Moreover, the switch module 14 transmits the capacitor voltage to the output module 15 through the capacitor low current conduction circuit 143.

[0058] When the capacitor high current time relay 4SJ and the grid high current time relay 2SJ are disconnected, the control module 13 can delay the normal shutdown time. After that, the control module 13 controls the grid low current time relay 1SJ to disconnect. Subsequently, the grid low current time relay 1SJ outputs a second normal disconnection signal, the control end of the grid low current contactor DJ1 B receives the second normal disconnection signal, and the grid low current conduction circuit 141 disconnects based on the second normal disconnection signal. In addition, the control module 13 controls the capacitor low current time relay 3SJ to disconnect. Subsequently, the capacitor low current time relay 3SJ outputs a second normal disconnection signal. Then, the control end of the capacitor low current contactor DJ2B receives the second normal disconnection signal, and the capacitor low current conduction circuit 143 can be disconnected based on the second disconnection signal. And the control end of the capacitor input contactor 2DJ receives the second normal disconnection signal, and the capacitor input contactor 2DJ can be disconnected based on the second normal disconnection signal.

[0059] When the grid stops inputting voltage, the power supply module 11 can disconnect the switch SA1. Thus, the switch SA1 can generate a shutdown signal. The control end of the grid input contactor 1DJ receives the shutdown signal, and the grid input contactor 1DJ disconnects based on the shutdown signal. In addition, the control module 13 can control the grid low current time relay 1SJ and the grid high current time relay 2SJ to shut down. Subsequently, the grid low current time relay 1SJ and the grid high current time relay 2SJ output the first abnormal disconnection signal. Then, the control end of the grid high current contactor DJ1A receives the first abnormal disconnection signal, and the grid high current conduction circuit 142 disconnects based on the first disconnection signal. Moreover, the control end of the grid low current contactor DJ1 B also receives the first disconnection signal, and the grid low current conduction circuit 141 can be disconnected based on the 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, and the elevator can maintain normal operation for a period of time. Furthermore, the carbon-based capacitor module 12 can supply power to the control module 13 via the capacitor input contactor 2DJ, so that the control module 13 can also maintain normal operation for a period of time.

[0060] When the grid low current time relay 1SJ and the grid high current time relay 2SJ are disconnected, the control module 13 can delay the first abnormal shutdown time. After that, the control module 13 controls the capacitor high current time relay 4SJ to disconnect. Then, the capacitor high current time relay 4SJ outputs a second abnormal disconnection signal. The control end of the capacitor high current contactor DJ2A receives the second disconnection signal, and the grid low current conduction circuit 144 can be disconnected based on the second abnormal disconnection signal.

[0061] When the capacitor high current time relay 4SJ is disconnected, the control module 13 can delay the second abnormal shutdown time. After that, the control module 13 controls the capacitor low current time relay 3SJ to disconnect. Then, the capacitor low current time relay 3SJ outputs a third disconnection signal. The control end of the capacitor low current contactor DJ2B receives the third abnormal disconnection signal, and the capacitor low current conduction circuit 143 can be disconnected based on the third abnormal disconnection signal. In addition, the control end of the capacitor input contactor 2DJ receives the third abnormal disconnection signal, and the capacitor input contactor 2DJ will also be disconnected based on the third abnormal disconnection signal. Because the capacitor low current conduction circuit 143 is disconnected, the carbon-based capacitor module 12 stops supplying power to the elevator, and then the elevator stops working. In addition, because the capacitor input contactor 2DJ is disconnected, the carbon-based capacitor module 12 also stops supplying power to the control module 13, and the control module 13 also stops working.

[0062] When the power grid fails, the control module 13 can disconnect the power grid control relay 6ZJ. Then the power grid control relay 6ZJ outputs a first disconnection signal, and the control end of the power grid high current time relay 2SJ and the control end of the power grid low current time relay 2SJ receive the first disconnection signal. Subsequently, the power grid high current time relay 2SJ can be disconnected based on the first disconnection signal, and the power grid low current time relay 1SJ can be disconnected based on the first disconnection signal. Then, the power grid high current time relay 2SJ outputs a first disconnection signal. The control end of the power grid high current contactor DJ1A receives the first disconnection signal, and the power grid high current conduction circuit 142 can be disconnected based on the first disconnection signal. At the same time, the power grid low current time relay 1SJ outputs a second disconnection signal. The control end of the power grid low current contactor DJ1 B receives the second disconnection signal, and the power grid low current conduction circuit 141 can be disconnected based on the second disconnection signal. Therefore, if the power grid fails, the user can manually disconnect the power grid high current conduction circuit 142 and the power grid low current conduction circuit 141, which effectively avoids the power grid failure from causing damage to the drive circuit or the elevator.

[0063] When the carbon-based capacitor fails, the control module 13 can disconnect the capacitor control relay 7ZJ. Then the capacitor control relay 7ZJ outputs a second disconnection signal, and the control end of the capacitor high current time relay 4SJ and the control end of the capacitor low current time relay 3SJ receive the second disconnection signal. Subsequently, the capacitor high current time relay 4SJ and the capacitor low current time relay 3SJ are disconnected. Then, the capacitor high current time relay 4SJ outputs a first disconnection signal. The control end of the capacitor high current contactor DJ2A receives the first disconnection signal, and the capacitor high current conduction circuit 144 can be disconnected based on the first disconnection signal. At the same time, the capacitor network low current time relay 3SJ outputs a third disconnection signal, and the control end of the capacitor low current contactor DJ2B receives the third disconnection signal, and the capacitor low current conduction circuit 143 can be disconnected based on the third disconnection signal. Therefore, if the power grid fails, the user can manually cut off the capacitor high current conduction circuit 144 and the capacitor low current conduction circuit 143, which effectively avoids the failure of the carbon-based capacitor from causing damage to the drive circuit or elevator.

[0064] The utility model provides an elevator power supply system with an energy storage function, which includes a power supply module, a carbon-based capacitor module, a control module, and a switch module. The control module includes a first control unit, a second control unit, a third control unit, and a fourth control unit, and the control module can be started based on a connection signal. The control module outputs a first start signal through the first control unit and the second control unit, and the switch module connects the grid small current conduction circuit and the capacitor small current conduction circuit based on the first start signal. Thus, the grid small current conduction circuit and the capacitor small current conduction circuit can transmit the power supply voltage to the carbon-based capacitor module. Therefore, the charging operation of the carbon-based capacitor module by the power supply voltage enables the carbon-based capacitor to have sufficient power, which can ensure that the control module can be used normally when the power is off. After delaying the first start time, the control module outputs a second start signal through the third control unit, and the switch module connects the grid large current conduction circuit based on the second start signal. Therefore, the power supply module can output the power supply voltage to the elevator. Thus, the elevator can start quickly and work normally based on the power supply voltage. In the elevator power supply system with energy storage function of the present invention, the control module is turned on first, and then the elevator is powered on, so that the start-up time of the elevator control module is earlier than the start-up time of the elevator. Therefore, the elevator will only run when there is a control instruction. Therefore, it is not easy for the elevator to get out of control during operation, and it is safer for users to use the elevator. The technical problem that the existing elevators have poor safety is effectively solved. After delaying the second start-up time, the control module outputs a third start signal through the fourth control unit. The switch module connects the small current conduction circuit of the power grid based on the third start signal, so that the carbon-based capacitor module can output the capacitor voltage to the elevator. The capacitor voltage can be used to adjust the power supply voltage, so that the voltage output to the elevator is more stable, so that the elevator can maintain a stable working state.

[0065] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. An elevator power supply system with energy storage function, characterized in that: It includes: A power supply module, comprising a power supply connection unit, the power supply connection unit is used to generate a connection signal and a shutdown signal, and the power supply module is used to output a supply voltage based on the connection signal; A surge voltage absorption module, connected to the power supply module, for preventing surge voltage from damaging the power supply module; A carbon-based capacitor module, used for performing energy storage operation on the supply voltage to generate a capacitor voltage; A control module, comprising a first control unit, a second control unit, a third control unit, and a fourth control unit. Based on the switch-on signal, the control module is started, the first control unit and the second control unit output a first start signal, the third control unit outputs a second start signal, and the fourth control unit outputs a third start signal; Based on the shutdown signal, the third control unit and the fourth control unit output a first disconnection signal, and the first control unit outputs a second disconnection signal; The second control unit outputs a third disconnection signal; The switch module comprises a grid small current conduction circuit, a capacitor small current conduction circuit, a grid large current conduction circuit and a capacitor large current conduction circuit; the input end of the grid small current conduction circuit is connected to the power supply module, and the output end of the grid small current conduction circuit is connected to the output module; the grid large current conduction circuit is connected in parallel with the grid small current conduction circuit; the input end of the capacitor small current conduction circuit is connected to the power supply module, and the output end of the capacitor small current conduction circuit is connected to the output module; the capacitor large current conduction circuit is connected in parallel with the capacitor small current conduction circuit; Based on the first start signal, the grid small current conduction circuit and the capacitor small current conduction circuit are in a conduction state; Based on the second start signal, the grid high current conduction circuit is in a conducting state; Based on the third start signal, the capacitor large current conduction circuit is in a conduction state; 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.

2. The elevator power supply system with energy storage function according to claim 1, characterized in that: The connection unit includes a connection switch, and the connection switch is used to generate a connection signal when closed. The control module includes a control input unit and a DC control power supply, and the DC control power supply is used to power the control module. The control input unit includes a power grid input contactor, and the input end of the power grid input contactor is connected to the power supply module and the carbon-based capacitor module, the control end of the power grid input contactor is connected to the connection switch, and the output end of the power grid input contactor is connected to the DC control power supply; The control input unit also includes a capacitor input contactor, an input end of the capacitor input contactor is connected to the power supply module and the carbon-based capacitor module, an output end of the capacitor input contactor is connected to the DC control power supply, the capacitor input contactor and the grid input contactor are connected in parallel, and a control end of the capacitor input contactor is connected to the second control unit.

3. The elevator power supply system with energy storage function according to claim 2, characterized in that: The first control unit includes a grid low-current time relay, the grid low-current conduction circuit includes a grid low-current contactor and a first 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 grid low-current time relay is connected to the control end of the grid low-current contactor; one end of the grid low-current contactor is connected to a power supply module, and the other end of the grid low-current contactor is connected to a first current limiting resistor, and the first current limiting resistor is connected to the output module.

4. The elevator power supply system with energy storage function according to claim 3, characterized in that: The second control unit includes a capacitor low current time relay, the capacitor low current conduction circuit 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 a control end 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, and the second current limiting resistor is connected to the output module.

5. The elevator power supply system with energy storage function according to claim 4, characterized in that: The third control unit includes a power grid high-current time relay, the power grid high-current conduction circuit includes a power grid high-current contactor, one end of the capacitor high-current time relay is connected to a DC control power supply, and the other end of the power grid high-current time relay is connected to the control end of the power grid high-current contactor; one end of the power grid high-current contactor is connected to a power supply module, and the other end of the power grid high-current contactor is connected to the output module.

6. The elevator power supply system with energy storage function according to claim 5, characterized in that: The fourth control unit includes a capacitor high-current time relay, and the capacitor high-current conduction circuit includes a capacitor high-current contactor. One end of the capacitor high-current time relay is connected to a DC control power supply, and the other end of the capacitor high-current time relay is connected to the control end of the capacitor high-current contactor; one end of the capacitor high-current contactor is connected to a power supply module, and the other end of the capacitor high-current contactor is connected to the output module.

7. The elevator power supply system with energy storage function according to claim 2, characterized in that: The control module also includes a first indication unit, which includes a first intermediate relay and a first indicator light, one end of the first intermediate relay is connected to the DC control power supply, the other end of the first intermediate relay is connected to the first indicator light, and the control end of the first intermediate relay is connected to the power grid.

8. The elevator power supply system with energy storage function according to claim 5, characterized in that: The control module also includes a second indication unit, which includes a second intermediate relay and a second indicator light, one end of the second intermediate relay is connected to the DC control power supply, the other end of the second intermediate relay is connected to the second indicator light, and the control end of the second intermediate relay is connected between the control ends of the power grid high-current time relay and the power grid high-current contactor.

9. The elevator power supply system with energy storage function according to claim 5, characterized in that: The control module also includes a power grid control unit, which includes a power grid control relay, one end of which is connected to a DC control power supply, and the other end of which is connected to a control end of the power grid high current time relay and a control end of the power grid low current time relay.

10. The elevator power supply system with energy storage function according to claim 6, characterized in that: The control module also includes a capacitor control unit, and the capacitor control unit includes the control module also includes a capacitor control unit, and the capacitor control unit 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 end of the capacitor high current time relay and the control end of the capacitor low current time relay.

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