CN215419712U - Elevator emergency power supply device - Google Patents
Elevator emergency power supply device Download PDFInfo
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- CN215419712U CN215419712U CN202120365407.XU CN202120365407U CN215419712U CN 215419712 U CN215419712 U CN 215419712U CN 202120365407 U CN202120365407 U CN 202120365407U CN 215419712 U CN215419712 U CN 215419712U
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Abstract
The utility model discloses an elevator emergency power supply device, which comprises: the system comprises a BMS module, a backup battery, a voltage converter, an alternating current power supply output switch, a band-type brake power supply output switch, a three-state switch and an emergency power supply conversion switch; the three-state switch is connected with the alternating current power supply output switch, the band-type brake power supply output switch and the emergency power supply change-over switch through signal lines, and the three-state switch controls the on and off of the alternating current power supply output switch, the band-type brake power supply output switch and the emergency power supply change-over switch based on the set switch mode. In the embodiment of the utility model, two functions of an emergency power supply and a brake release power supply are realized, the cost of the product is greatly reduced, the volume of the product is reduced, and the safety and reliability of the product are improved.
Description
Technical Field
The utility model relates to the technical field of elevators, in particular to an elevator emergency power supply device.
Background
Most elevator systems at present adopt independent emergency devices (emergency power supplies) to provide single-phase power for an elevator control system and a frequency converter, provide emergency operation signals for the elevator control system, and enable the control system to enter emergency operation after receiving the signals to solve emergency operation after power failure. The independent brake release device operates outside the shaft to release the brake to move the elevator so as to solve the emergency operation after electrical failure or power failure. The mechanical band-type brake release device is gradually replaced by an electric brake release device using a backup power supply due to the problems of environment and mechanical force.
Fig. 1 shows a schematic structural diagram of a conventional elevator control system, wherein an automatic emergency device is arranged on an elevator control cabinet, and a brake release button switch is arranged on equipment of the emergency device. The safety state of the elevator is detected when the external power fails, the internal contracting brake is opened, the driving force of the motor is output, and the movement of the elevator car is controlled. When the elevator brake system needs to be opened manually, a brake releasing button on the emergency device is pressed to output a brake power supply, the elevator brake is released, and the elevator car is moved.
Fig. 2 shows a structural schematic diagram of a conventional elevator control system, the emergency device and the brake release device added to the elevator control system are two sets of independent products, an emergency power supply system can provide an emergency power supply for an elevator to an elevator control cabinet when power failure occurs in an external power supply, the elevator control cabinet receives an emergency operation signal under the power supply of the emergency power supply, and then emergency operation is completed according to an emergency operation mode set by the elevator. When the elevator control system is in fault, the elevator brake is released through the other set of brake release device, and the movement of the car is realized.
When the emergency device shown in fig. 1 is in emergency operation after external power outage, a safety loop and a door lock loop of an elevator need to be detected, the driving force of a motor is output under the condition that the door lock and the safety loop are normal, an internal contracting brake is opened, and an elevator car is slowly moved. The emergency device has multiple wiring and complex interfaces. The safety and door lock circuits independent of the elevator control system for detecting the elevator have more wiring, can damage the original elevator circuits, has the risk of increasing faults, is inconvenient to detect when the elevator or an emergency device breaks down, and increases the maintenance cost. The emergency operation mode is unreliable for the emergency operation of the elevator, the states (such as the motor state, the moving speed and the like) of the elevator are greatly influenced, and potential safety hazards exist. The elevator brake control is connected to an elevator emergency device, clear conversion control logic does not exist, and the risk of the brake out of control caused by misoperation when a brake releasing button is manually pressed exists.
The product shown in the figure 2 is relatively simple in wiring, and when the elevator runs in an emergency, the elevator control system can automatically complete the emergency running without the wiring complexity existing in the technology of the figure 1, so that the difficulty of maintenance personnel when the elevator or the emergency device breaks down is reduced. However, the product of the technology of fig. 2 has two sets of independent battery charging and discharging management systems and two sets of DC/DC boosting systems. The wiring control is complex, the cost is high, and the product is not competitive.
SUMMERY OF THE UTILITY MODEL
The emergency power supply device for the elevator, provided by the utility model, has the advantages that two functions of an emergency power supply and a brake releasing power supply are realized through the cooperation of the three-state switch, the alternating-current power supply output switch, the band-type brake power supply output switch, the emergency power supply changeover switch and the like, the cost of the product is greatly reduced, the volume of the product is reduced, and the safety and reliability of the product are improved.
In order to solve the above problems, the present invention provides an elevator emergency power supply apparatus, including: BMS module, backup battery, voltage converter, alternating current power supply output switch, band-type brake power supply output switch, three state switch, emergency power supply change over switch, wherein:
the emergency power supply device is connected to a circuit where an external power grid and an elevator control system are located based on an emergency power supply change-over switch;
one end of the BMS module is connected with an external power grid, and the other end of the BMS module is connected with a backup battery;
the backup battery is connected with the voltage converter;
the voltage converter is used for generating direct current from the electric energy of the backup battery and connecting the direct current to an elevator brake through the brake power supply output switch, and is used for generating alternating current from the electric energy of the backup battery and connecting the alternating current to the elevator control cabinet through the alternating current power supply output switch;
the three-state switch is connected with the alternating current power supply output switch, the band-type brake power supply output switch and the emergency power supply change-over switch through signal lines, and the three-state switch controls the on and off of the alternating current power supply output switch, the band-type brake power supply output switch and the emergency power supply change-over switch based on the set switch mode.
The alternating current power supply output switch is a contactor or a relay, the band-type brake power supply output switch is a contactor or a relay, and the emergency power supply conversion switch is a contactor or a relay.
The voltage converter includes: the DC/DC module is connected with an elevator brake through a brake power output switch, and the DC/AC module is connected with an elevator control cabinet through an alternating current power output switch.
The DC/DC module comprises a primary side push-pull circuit, a high-frequency isolation boosting transformer, a secondary side rectifying circuit and an output BUS circuit, wherein an LC resonance unit is connected between the high-frequency isolation boosting transformer and the secondary side rectifying circuit in series.
The DC/DC module also comprises a voltage selection change-over switch which controls and selects the connection relation of the windings of the isolation transformer. The voltage selection change-over switch is a relay or a power switch device.
The voltage converter includes: the device comprises a DC/AC module, a step-up transformer and an AC/DC module, wherein the DC/AC module is connected with the step-up transformer, the step-up transformer is connected with the AC/DC module, the DC/AC module is used for carrying out alternating current inversion on electric energy in the backup battery, the step-up transformer is connected with an elevator control cabinet through an alternating current power supply output switch, and the AC/DC module is connected with an elevator band-type brake through a band-type brake power supply output switch.
The voltage converter includes: the power frequency boosting transformer comprises a full-bridge inverter circuit, an inverter driving circuit, a power frequency boosting transformer, a voltage selection change-over switch and a rectifying circuit, wherein the voltage selection change-over switch controls the connection relation of a winding of the power frequency boosting transformer, and the rectifying circuit is connected with an elevator band-type brake through a band-type brake power output switch; and an alternating current power supply output switch is arranged on an alternating current output circuit of the power frequency boosting transformer. The voltage selection change-over switch is a relay or a power switch device.
According to the embodiment of the utility model, through the cooperation of the three-state switch, the alternating-current power supply output switch, the band-type brake power supply output switch, the emergency power supply changeover switch and the like, the pulse width modulation controlled by the DC/DC is adjusted in a matched manner according to the state of K1, so that two functions of an emergency power supply and a brake release power supply are realized. The elevator emergency power supply device in the embodiment of the utility model can realize the functions of the emergency power supply device and the manual brake release device by the position selection control of the three-state switch, the pulse width adjustment of the DC/DC, the control of the related switch and the product adjustment of the feedback DC/DC output voltage through adding one switch and two brake release button switch signals, can meet the use requirements of the elevator under multiple working conditions under the condition of not increasing the cost greatly, greatly reduces the cost of the product, reduces the volume of the product and improves the safety and reliability of the product.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a conventional elevator control system;
fig. 2 is a schematic view of another structure of a conventional elevator control system;
fig. 3 is a schematic structural view of a first embodiment of the emergency power supply device of the elevator of the utility model;
fig. 4 is a schematic structural view of a second embodiment of the emergency power supply device of the elevator of the utility model;
FIG. 5 is a schematic diagram of the circuit structure of the DC/DC module of the present invention;
FIG. 6 is a schematic structural view of an elevator emergency power supply device according to a third embodiment of the present invention
Fig. 7 is a schematic diagram of the voltage converter structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Fig. 3 shows a schematic structural view of a first embodiment of the emergency power supply device of the elevator, which comprises: BMS module, backup battery BAT, voltage converter, alternating current power supply output switch J2, band-type brake power supply output switch J3, tristate switch K1, emergency power supply change over switch J1, wherein: the emergency power supply device is connected to a circuit where an external power grid and an elevator control system are located based on an emergency power supply changeover switch J1; one end of the BMS module is connected with an external power grid, and the other end of the BMS module is connected with a backup battery BAT; the backup battery BAT is connected to the voltage converter; the voltage converter is used for connecting the electric energy of the backup battery to the elevator brake through the brake power supply output switch J3 and connecting the electric energy of the backup battery to the alternating current through the alternating current power supply output switch J2; the three-state switch K1 is connected with the AC power supply output switch J2, the band-type brake power supply output switch J3 and the emergency power supply change-over switch J1 through signal lines, and the three-state switch controls the opening and closing of the AC power supply output switch J2, the band-type brake power supply output switch J3 and the emergency power supply change-over switch J1 based on the set switch mode.
The embodiment of the utility model can output power supply to provide emergency power supply for the elevator control cabinet when external power fails, so that the elevator can realize emergency operation, and can also realize manual brake release and release of the contracting brake to move the elevator car in the elevator failure state. The cost of the elevator emergency power supply and the brake release device is greatly reduced, and the field use is more convenient.
The elevator control cabinet and the elevator band-type brake in the embodiment of the utility model share one voltage converter, so that the functions of an emergency power supply device and a manual brake release device can be realized, and the voltage converter provides required power supply for the elevator control cabinet and the elevator band-type brake through the supported booster circuit.
The battery is charged through the charge management module, namely the BMS module, when the external power is normal, K1 is a three-state switch, when the switch K1 is arranged in the automatic emergency mode, press the release button, the button does not work, the J1 switch is disconnected after the power failure, the backup battery can carry out DC/DC boost through the voltage converter and then outputs an alternating current single-phase power supply through DC/AC voltage stabilization, the J2 switch is closed and gives the elevator system, meanwhile, the communication interface outputs an emergency request signal and shields a phase sequence signal and gives the elevator, the elevator does emergency rescue operation under the single-phase power supply state and the emergency operation signal, the elevator car is dragged to the door position from the non-door position and is opened, the passenger is released, and the automatic emergency rescue is completed.
When the switch K1 is in a brake release mode, the J1 switch is disconnected, the J2 switch is in a disconnected state, no matter whether external electricity exists or not, an elevator control system has no external electricity input, the brake release button is pressed at the moment, the communication interface outputs a low-voltage power supply to only supply power to the elevator speed detection and display system, when two brake release buttons are operated simultaneously, the backup battery carries out DC/DC boosting processing through the voltage converter to generate a brake release power supply, then the elevator brake is supplied with power through the J3 switch to release the elevator brake, the elevator car is moved, and the brake output is stopped after the elevator car enters a door zone or the brake release button is released, so that the manual brake release function is realized.
When the switch K1 is in a shutdown mode, the power supply can only charge the battery, and at the moment, the power is cut off, the J2 can not output an emergency power supply to the elevator system and can not give an emergency operation request signal; and when the brake release button is pressed, J3 can not output brake release power to supply power to the brake system. The elevator state can be detected quickly and conveniently, the difficulty of troubleshooting problems of maintenance personnel due to the access of an emergency power supply is avoided, and the operation of the maintenance personnel is facilitated while the cost is reduced.
In practical application, the J1, J2 and J3 switches can adopt contactors, and can also adopt relays to realize functions in the scheme.
Example 2
Fig. 4 shows a schematic structural view of a second embodiment of the elevator emergency power supply device of the utility model, which comprises: power supply detection and charge-discharge management (BMS module), a backup battery BAT, a DC/DC module, a DC/AC module, a three-state switch K1, an alternating current output switch J2, a brake-contracting output switch J3, a brake-releasing button and the like.
The power supply detection and charge-discharge management module works when the external power is normal, charges the battery according to the environmental state, detects the capacity state of the battery, and outputs a battery fault signal through the communication module when the capacity of the battery is reduced or the battery fails; when the elevator is in a non-door area, emergency operation is carried out at a low speed in the direction of saving electric energy, and the elevator car is opened to release passengers when the elevator car reaches the door area.
When the elevator trouble, can't remove the elevator car through normal power operation, need be through opening the band-type brake again this moment, the mode operation of removal car, then need the maintainer to arrange tristate switch K1 in the mode 2 that declutches, the automatic disconnection of J1 switch this moment, outer electricity can't give the elevator power supply, avoid the interference of outer net power supply, through operating two declutching buttons, pass through DC/DC module with reserve battery's electric energy, boost output DC110V BUS voltage, rethread J3 relay gives the elevator band-type brake power supply, open the elevator band-type brake, the elevator car upwards or moves downwards according to the weight relation with to heavy, the maintainer removes the elevator car through simple operation, realize quick rescue operation.
When maintainer overhauls the elevator, avoid emergency power supply device to the operation of elevator, then arrange tristate switch K1 in power off state 3 in, inspect the elevator circuit this moment, do not receive emergency power supply's influence, whether have a power failure or operate the release button and can not export emergency power supply, improved the security of power, make things convenient for maintainer's use.
Fig. 5 shows a schematic circuit structure diagram of the DC/DC module of the present invention, the DC/DC module adopts a resonant soft switching converter, and includes a primary side push-pull circuit, a high frequency isolation step-up transformer T1, a secondary side rectifying circuit and an output BUS circuit, and an LC resonance unit is connected in series between the isolation transformer and the secondary side rectifying circuit. By setting a proper charging and discharging capacitance value of a power switch tube of the primary side push-pull circuit and a proper capacitance value of an LC series resonance inductor, the converter works in a soft switching state, the power switch tube is switched on at zero voltage and switched off at zero current, and the switching-off peak of a secondary side rectifying unit can be eliminated. Therefore, the conversion efficiency is improved, the switching noise is reduced, the weight of the converter is reduced, and the conversion efficiency is high.
The DC/DC module in the embodiment of the utility model adopts a resonant soft switching converter mode to realize DC/DC boosting, and can realize DC/DC boosting in modes of full-bridge conversion and the like in practical application, but the scope of the utility model is not influenced.
The circuit shown in fig. 5 outputs two kinds of BUS output voltages with different voltage levels through the detection control of the three-state switch K1, the voltage selection change-over switch J4 and the BUS voltage, and the high-voltage BUS is used for the input of the DC/AC inverter power supply to generate an alternating current emergency power supply; the low-voltage BUS is used for inputting band-type brake voltage to generate a brake release power supply. The voltage selection change-over switch J4 can be a relay or a power switch device, the connection relation of the windings of the isolation transformer is controlled and selected through the voltage selection change-over switch J4, and the output use control of the rectified output voltage is realized, so that the function of a brake release power supply can be added to a single emergency power supply. The brake release button switch can be arranged on an emergency power supply, can also be independently arranged on elevator equipment, and is suitable for different elevators.
The elevator control cabinet and the elevator brake share one set of high-frequency isolation step-up transformer T1, so that the functions of an emergency power supply device and a manual brake release device can be realized, and the required power supply is provided for the elevator brake and the elevator control cabinet based on a DC/DC step-up circuit and an inverter circuit.
In summary, the embodiment of the utility model can realize the integration of the traditional emergency power supply and the brake release power supply through the configuration selection of the coil of the isolation transformer T1 of the DC/DC boosting power supply and the control logic of the output switch J4, and the cost is obviously reduced. Compared with the brake releasing function and the automatic emergency function of the traditional elevator emergency device, the emergency device has the advantages of simpler wiring and lower cost. Through the matching of the state switches K1 and J1-J4, the pulse width modulation controlled by the DC/DC is adjusted according to the state matching of K1, and the emergency power supply function and the brake release power supply function are realized.
K1 is placed in an automatic emergency state 1, a DC/DC boost BUS needs to be increased to DC600V, J4 is in a release state, the number of connected windings is the number of multiple windings, the pulse width adjustment output of the DC/DC is DC600V, J3 is controlled by the position of K1, and the work cannot be carried out. The DC/AC can invert and output AC380V alternating current power supply under the condition that the input is DC600V, J2 is connected, an alternating current stabilized voltage power supply is output to an elevator system, meanwhile, a communication interface controls the elevator to enter an emergency operation mode, the elevator operates at a low speed in an emergency mode, and a door is opened to release passengers after the elevator arrives at a door area.
K1 is in the open state 2, the J1 and J2 contactors are controlled by the K1 position to be unable to work, and the connection between the external power and the elevator room is disconnected. The control module controls the J4 switch to work when detecting that K1 is in a brake release position, the brake release button switch is pressed down and the like, a winding with low winding number is switched on, the pulse width of the DC/DC is adjusted and driven, the DC/DC boosting BUS is output to the stable DC110V, the J3 works, the DC110V is output to an elevator brake, the elevator opens the brake, an elevator car moves upwards or downwards according to the weight relation with a counterweight, and the rescue operation of the brake release slide ladder is realized.
K1 is in shutdown state, J1 is not controlled, J2 and J3 can not work, and the elevator is not affected by emergency power supply. The position of a switch is selected and controlled through K1 state, the DC/DC pulse width is adjusted, the J4 switch is controlled, and the DC/DC output voltage is fed back to be adjusted. The functions of an emergency power supply device and a manual brake release device can be realized only by additionally adding a switch J2 and two brake release button switch signals, the use requirements under multiple working conditions of the elevator can be met under the condition that the cost is not increased greatly, the cost of the product is greatly reduced, the size of the product is reduced, and the safety and reliability of the product are improved.
Example 3
Fig. 6 shows a schematic structural view of a third embodiment of the emergency power supply device of the elevator, which comprises: power supply detection and charge-discharge management (BMS module), a backup battery BAT, a DC/AC module, a step-up transformer, an AC/DC module, a three-state switch K1, an alternating current power supply output switch J2, a band-type brake power supply output switch J3, a brake release button and the like. Fig. 7 shows a schematic diagram of a voltage converter in an embodiment of the present invention, which is described in detail below with reference to fig. 3 and 6.
The voltage converter herein includes: the device comprises a DC/AC module, a step-up transformer and an AC/DC module, wherein the DC/AC module is connected with the step-up transformer, the step-up transformer is connected with the AC/DC module, the DC/AC module is used for carrying out alternating current inversion on electric energy in the backup battery, the step-up transformer is connected with an elevator control cabinet through an alternating current power supply output switch J2, and the AC/DC module is connected with an elevator band-type brake through a band-type brake power supply output switch J3.
The voltage converter includes: and the DC/AC module is used for carrying out alternating current inversion on the electric energy in the backup battery and outputting alternating current through the power frequency step-up transformer. The voltage converter includes: the power frequency boosting transformer comprises a full-bridge inverter circuit, an inverter driving circuit, a power frequency boosting transformer, a voltage selection change-over switch and a rectifying circuit, wherein the voltage selection change-over switch controls the connection relation of windings of the power frequency boosting transformer, and the rectifying circuit is connected with an elevator band-type brake through a band-type brake power supply output switch J3; and an alternating current power supply output switch J2 is arranged on an alternating current output line of the power frequency boosting transformer.
The voltage converter shown in fig. 7 can generate an alternating current power supply for the backup battery through the DC/AC alternating current inverter bridge, and then generate an alternating current power supply required by the elevator through a boosting mode of the power frequency step-up transformer T1. When the product is used for emergency power supply to be supplied to an elevator control cabinet, the input voltage of the transformer is adjusted, the output voltage of the isolation boosting transformer is AC380V, the J2 switch is closed, AC of AC380V is output to the elevator control cabinet, the elevator is informed to operate in an emergency power supply mode through the communication interface, the elevator operates to a door area at a low speed, and the elevator exits after opening the door and releasing passengers.
The elevator control cabinet and the elevator band-type brake share one set of inverter circuit and a power frequency step-up transformer T1, functions of an emergency power supply device and a manual brake release device can be achieved, and required power is provided for the elevator control cabinet and the elevator band-type brake based on DC/AC alternating current inversion and the step-up transformer.
When an elevator control system fails, a product enters a brake release mode through a state switch, a backup battery generates an alternating current power supply through a DC/AC (direct current/alternating current) alternating current inverter bridge, the alternating current power supply is boosted through a power frequency boosting transformer T1, a tap is additionally arranged in the middle of the transformer and is connected with a change-over switch J4, terminal voltage and feedback control are adjusted, the alternating current power supply is boosted through a T1 transformer and is output, at the moment, a J4 switch is closed, the alternating current power supply generates a DC110V direct current power supply through rectification of D1-D4, after a brake release button is pressed, the J3 switch is switched on, the DC110V power supply is connected with a brake through a B + port and a B-port, the elevator brake is opened, and the elevator moves an elevator car through the relationship between the car and a counterweight. The voltage selection changeover switch J4 can be a relay or a power switch device, and the connection relation of the isolation transformer winding is controlled and selected through the voltage selection changeover switch J4.
The emergency power supply needs to additionally output a band-type brake power supply, J3 and J4 are added, and rectifier diodes D1-D4 need to be added on the basis of the emergency power supply. J3 is an isolation output switch, which can be a contactor in actual products or a relay.
The state switch K1 can use a switch with three states, or can use two switches to realize logic control of three states, the two states of one switch control the difference between the emergency power supply and the brake release output, and the other switch is used for closing the emergency power supply and has the same function as the three-state switch.
The above embodiments of the present invention are described in detail, and the principle and the implementation of the present invention are described herein by using specific embodiments, and the description of the above embodiments is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. An elevator emergency power supply device, comprising: BMS module, backup battery, voltage converter, alternating current power supply output switch, band-type brake power supply output switch, three state switch, emergency power supply change over switch, wherein:
the emergency power supply device is connected to a circuit where an external power grid and an elevator control system are located based on an emergency power supply change-over switch;
one end of the BMS module is connected with an external power grid, and the other end of the BMS module is connected with a backup battery;
the backup battery is connected with the voltage converter;
the voltage converter is used for generating direct current from the electric energy of the backup battery and connecting the direct current to an elevator brake through the brake power supply output switch, and is used for generating alternating current from the electric energy of the backup battery and connecting the alternating current to the elevator control cabinet through the alternating current power supply output switch;
the three-state switch is connected with the alternating current power supply output switch, the band-type brake power supply output switch and the emergency power supply change-over switch through signal lines, and the three-state switch controls the on and off of the alternating current power supply output switch, the band-type brake power supply output switch and the emergency power supply change-over switch based on the set switch mode.
2. The elevator emergency power supply device according to claim 1, wherein the ac power supply output switch is a contactor or a relay, the band-type brake power supply output switch is a contactor or a relay, and the emergency power supply changeover switch is a contactor or a relay.
3. The elevator emergency power supply apparatus of claim 1, wherein the voltage converter comprises: the DC/DC module is connected with an elevator brake through a brake power output switch, and the DC/AC module is connected with an elevator control cabinet through an alternating current power output switch.
4. The emergency power supply device of elevator as claimed in claim 3, wherein said DC/DC module comprises a primary side push-pull circuit, a high frequency isolation step-up transformer, a secondary side rectification circuit and an output BUS circuit, and an LC resonance unit is connected in series between said high frequency isolation step-up transformer and said secondary side rectification circuit.
5. The elevator emergency power supply apparatus according to claim 4, further comprising a voltage selection changeover switch on the DC/DC module, the voltage selection changeover switch controlling the connection relationship of the windings of the isolation transformer selected.
6. The elevator emergency power supply apparatus according to claim 5, wherein the voltage selection changeover switch is a relay or a power switching device.
7. The elevator emergency power supply apparatus of claim 1, wherein the voltage converter comprises: the device comprises a DC/AC module, a step-up transformer and an AC/DC module, wherein the DC/AC module is connected with the step-up transformer, the step-up transformer is connected with the AC/DC module, the DC/AC module is used for carrying out alternating current inversion on electric energy in the backup battery, the step-up transformer is connected with an elevator control cabinet through an alternating current power supply output switch, and the AC/DC module is connected with an elevator band-type brake through a band-type brake power supply output switch.
8. The elevator emergency power supply apparatus of claim 7, wherein the voltage converter comprises: the power frequency boosting transformer comprises a full-bridge inverter circuit, an inverter driving circuit, a power frequency boosting transformer, a voltage selection change-over switch and a rectifying circuit, wherein the voltage selection change-over switch controls the connection relation of a winding of the power frequency boosting transformer, and the rectifying circuit is connected with an elevator band-type brake through a band-type brake power output switch; and an alternating current power supply output switch is arranged on an alternating current output circuit of the power frequency boosting transformer.
9. The elevator emergency power supply apparatus according to claim 8, wherein the voltage selection changeover switch is a relay or a power switching device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120365407.XU CN215419712U (en) | 2021-02-07 | 2021-02-07 | Elevator emergency power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120365407.XU CN215419712U (en) | 2021-02-07 | 2021-02-07 | Elevator emergency power supply device |
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| CN215419712U true CN215419712U (en) | 2022-01-04 |
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| CN202120365407.XU Active CN215419712U (en) | 2021-02-07 | 2021-02-07 | Elevator emergency power supply device |
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| CN (1) | CN215419712U (en) |
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2021
- 2021-02-07 CN CN202120365407.XU patent/CN215419712U/en active Active
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