CN209982171U - Elevator emergency power supply system - Google Patents
Elevator emergency power supply system Download PDFInfo
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- CN209982171U CN209982171U CN201921145119.2U CN201921145119U CN209982171U CN 209982171 U CN209982171 U CN 209982171U CN 201921145119 U CN201921145119 U CN 201921145119U CN 209982171 U CN209982171 U CN 209982171U
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- storage battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model discloses an elevator emergency power supply system, which comprises a power grid power supply, a charging circuit, a storage battery, an inverter circuit and a power supply switching unit; the charging circuit is respectively connected with the power grid power supply and the storage battery, and the charging circuit is used for charging the storage battery when the power grid power supply is normal; the inverter circuit is connected with the storage battery and is used for converting the direct current of the storage battery into alternating current used by an elevator load; the power supply switching unit is respectively connected with the power grid power supply and the inverter circuit and used for switching to the storage battery to supply power to the elevator load when the power grid power supply fails and switching to the power grid power supply to supply power to the elevator load when the power grid power supply is normal. When the power supply of the power grid is normal, the utility model enters a standby charging state; after the power grid is cut off, the system automatically enters an inversion state to provide an emergency power supply for an elevator control system; and when the power supply of the power grid is recovered, the power grid is recovered to a standby charging state. The utility model discloses can provide emergency power supply, the safe operation of guarantee elevator for elevator control system.
Description
Technical Field
The utility model relates to an emergent power supply technical field especially relates to an emergent power supply system of elevator.
Background
With the building of high-rise buildings becoming more and more, the application of the elevator is becoming more and more extensive. An elevator is a permanent transport device serving a number of specific floors in a building, the cars of which travel in at least two rigid tracks perpendicular to the horizontal or inclined at an angle of less than 15 ° to the vertical. The elevator can be divided into a low-speed elevator (below 4 m/s), a high-speed elevator (4-12 m/s) and a high-speed elevator (above 12 m/s) according to the speed.
At present, the elevator is generally directly supplied with power by a power grid, and a power supply adopts 380V alternating current. However, if the power supply of the power grid fails during the use of the elevator and the elevator cannot be normally supplied with power, the elevator is stopped during the use of the elevator, and great potential safety hazards are brought to users.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The to-be-solved technical problem of the utility model is to provide an elevator emergency power supply system to overcome prior art because the grid power can not cause the defect of shutting down in the elevator use for the elevator normal power supply.
(II) technical scheme
In order to solve the technical problem, the utility model provides an elevator emergency power supply system, which comprises a power grid power supply, a charging circuit, a storage battery, an inverter circuit and a power supply switching unit;
the charging circuit is respectively connected with the power grid power supply and the storage battery, and the storage battery is charged by the power grid power supply through the charging circuit when the power grid power supply is normal;
the inverter circuit is connected with the storage battery and is used for converting the direct current of the storage battery into alternating current used by an elevator load;
the power supply switching unit is respectively connected with the power grid power supply and the inverter circuit and used for switching to the storage battery to supply power to the elevator load when the power grid power supply fails and switching to the power grid power supply to supply power to the elevator load when the power grid power supply is normal.
The system further comprises a switching time setting unit which is used for setting the time from the power source of the power grid to the starting output of the storage battery when the power source of the power grid fails.
The switching time setting unit sets the switching time within a time range of 10-60 seconds.
The system also comprises a stopping mode setting unit used for setting the stopping mode of the elevator when the storage battery supplies power for the elevator load.
Wherein the shutdown mode comprises:
and stopping after the continuous work is carried out for a preset time, switching to a power grid power supply to supply power to an elevator load after rescue is finished, and/or working until the power of a storage battery is exhausted.
The charging circuit comprises a voltage reduction module and a charging module; the voltage reduction module is respectively connected with the power grid power supply and the charging module and is used for reducing the voltage of the power grid power supply and outputting the reduced voltage to the charging module; the charging module is connected with the storage battery and used for converting and outputting the voltage received by the voltage reduction module to the storage battery to charge the storage battery.
The charging module charges the storage battery by adopting a variable frequency pulse charging method.
The inverter circuit comprises an inverter and a boosting module; the inverter is respectively connected with the storage battery and the boosting module and is used for converting direct current of the storage battery into alternating current and transmitting the alternating current to the boosting module; the boosting module is used for boosting the alternating current received from the inverter and converting the alternating current into the alternating current used by an elevator load.
Wherein, the power switching unit is a circuit breaker.
Wherein, the storage battery adopts a liquid-free and maintenance-free battery.
(III) advantageous effects
The elevator emergency power supply system of the utility model enters a standby charging state when the power grid power supply is normal; after the power grid is cut off, the system automatically enters an inversion state to provide an emergency power supply for an elevator control system; and when the power supply of the power grid is recovered, the power grid is recovered to a standby charging state. The utility model discloses an elevator emergency power supply system can provide emergency power supply for elevator control system, with elevator slow motion to flat bed position, ensures the safe operation of elevator.
Drawings
Fig. 1 is a schematic structural diagram of an elevator emergency power supply system according to an embodiment of the present invention;
fig. 2 is the circuit schematic diagram of the elevator emergency power supply system of the embodiment of the utility model.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Example 1
An elevator emergency power supply system of the embodiment is shown in fig. 1, and the system includes a power grid power supply 11, a charging circuit 12, a storage battery 13, an inverter circuit 14 and a power supply switching unit 15;
the charging circuit 12 is respectively connected with the power grid power supply 11 and the storage battery 13, and the power grid power supply 11 charges the storage battery 13 through the charging circuit 12 in a normal state;
the inverter circuit 14 is connected with the storage battery 13 and is used for converting the direct current of the storage battery 13 into alternating current used by an elevator load;
the power supply switching unit 15 is respectively connected with the power grid power supply 11 and the inverter circuit 14, and is used for switching to the storage battery 13 to supply power to the elevator load when the power grid power supply 11 fails, and switching to the power grid power supply 11 to supply power to the elevator load when the power grid power supply 11 is normal.
The following is a detailed description of a specific structure of the elevator emergency power supply system of the embodiment, wherein the circuit schematic diagram of the elevator emergency power supply system of the embodiment of the present invention is shown in fig. 2.
Referring to fig. 2, the charging circuit 12 includes a voltage step-down module and a charging module; the voltage reduction module is respectively connected with the power grid power supply and the charging module and is used for reducing the voltage of the power grid power supply and outputting the reduced voltage to the charging module; the charging module is connected with the storage battery and used for converting and outputting the voltage received by the voltage reduction module to the storage battery to charge the storage battery. In this embodiment, the voltage reduction module is used to reduce the voltage of AC380V to AC96V and then supply power to the charging module, and the voltage reduction module is a voltage reduction type transformer. The input voltage of the charging module is the output voltage of the step-down transformer, and the output voltage is used for charging the battery. The output current of the charging module is not higher than the maximum charging current acceptable by the battery pack, and the output voltage is not higher than the maximum charging voltage acceptable by the battery pack.
The inverter circuit 14 includes an inverter and a boost module; the inverter is respectively connected with the storage battery and the boosting module and is used for converting direct current of the storage battery into alternating current and transmitting the alternating current to the boosting module; the boosting module is used for boosting the alternating current received from the inverter and converting the alternating current into the alternating current used by an elevator load. In the embodiment, the inverter mainly functions to invert the DC96V DC output by the battery into AC96V AC. The function of the boost module is to boost the alternating current to AC380V for use by the elevator control system, and the boost module adopted in the embodiment is a boost transformer.
In this embodiment, the power switching unit 15 is a circuit breaker. The breaker is mainly used for matching with a protection device and an automatic device when a system has a fault, rapidly cutting off fault current and protecting the safe operation of the system.
In this embodiment, the storage battery 13 is a liquid-free maintenance-free battery, and the charging module charges the storage battery by using a variable-frequency pulse charging method, so that the time for the storage battery to reach a full-charge state can be shortened, the polarization phenomena of the positive and negative plates of the storage battery can be reduced or alleviated as much as possible, and the service efficiency of the storage battery can be improved. During the selection of the battery, the following 4 points should be noted:
1. voltage U: the voltage of the battery is determined by the series connection number, and the voltage of a single battery is constant, so the total voltage of the battery is always integral multiple of the single battery. When the battery is represented, the series stage number + s is used as the model number of the battery, and if two series stages are represented as 2s, three series stages are represented as 3 s.
2. Capacity mAh: the capacity of the battery indicates the amount of electric energy stored therein, and the larger the capacity is, the longer the operation time after charging is. The capacity of the cell is expressed in mAmp hours, e.g., 2000mAh, to indicate that the cell can sustain a complete discharge for 1 hour at a discharge current of 2000 mA.
3. And (3) charge-discharge multiple C: the charge-discharge multiple C of the battery determines the discharge capacity, the maximum discharge current is equal to C multiplied by the capacity, and if a lithium battery with 1000mAh and 20C is used, the maximum discharge current is equal to 1000mA multiplied by 20 equal to 20A.
4. Battery series-parallel characteristics: after n batteries are connected in parallel, the output voltage of the battery pack is unchanged, and the capacity is n times of that of a single battery;
after n batteries are connected in series, the output voltage of the battery pack is n times of that of a single battery, and the capacity is unchanged.
In the actual use process, the required capacity of the battery is shown as the formula (1):
wherein Q is the battery capacity in AH; w is the battery power, and the unit is kW.h; u is the battery terminal voltage in V.
Generally, certain margin is left in the selection of battery parameters, the battery pack parameters in the embodiment are 96V and 7AH, and the battery pack is obtained by connecting 8 single batteries with parameters of 12V and 7AH in series.
The battery of the embodiment is provided with the battery management system, so that the residual capacity and the health state of the battery pack of the battery can be monitored in real time. When the residual electric quantity of the battery is monitored to be insufficient, the system can automatically charge the battery until the battery is fully charged. When the health state of the battery is monitored to be bad, the system can immediately remind the user of replacing the battery, and meanwhile, the device is forbidden to be put into use until the battery with the good health state is replaced.
The utility model discloses elevator emergency power supply system's input and output are commercial power AC380V, and its working process is: commercial power AC380V steps down through the step-down module, then charges for the battery through the module of charging, and the battery passes through the circuit breaker and links to each other with the inverter, converts the direct current of output into the alternating current, then the rethread step-up module with the alternating current step-up for AC380V for elevator control system power supply.
The elevator emergency power supply system provided by the embodiment of the utility model enters a standby charging state when the power grid power supply is normal; after the power grid is cut off, the system automatically enters an inversion state to provide an emergency power supply for an elevator control system; and when the power supply of the power grid is recovered, the power grid is recovered to a standby charging state. The utility model discloses can provide emergency power supply for elevator control system, with elevator slow motion to flat bed position, the safe operation of guarantee elevator.
Example 2
The embodiment provides an elevator emergency power supply system, and compared with embodiment 1, the embodiment has the following differences:
1. the elevator emergency power supply system of the embodiment further comprises a switching time setting unit for setting the time from the power grid power failure to the storage battery starting output. The time range set by the switching time setting unit is 10-60 seconds and is adjusted by a potentiometer.
2. The elevator emergency power supply system of the embodiment further comprises a shutdown mode setting unit for setting a shutdown mode of the elevator when the storage battery supplies power to the elevator load. The shutdown mode comprises the following steps: and stopping after the continuous work is carried out for a preset time, switching to a power grid power supply to supply power to an elevator load after rescue is finished, and/or working until the power of a storage battery is exhausted.
In this embodiment, the specific setting mode is as follows:
(1) when the dial switch Bit1 is turned ON, the operation is continued for 10 minutes and then stopped. When the dial switch Bit2 is ON, switching to the commercial power after rescue is finished;
(2) the dial switch Bit1 is turned OFF until the battery power is exhausted.
The elevator emergency power supply system of the utility model enters a standby charging state when the power grid power supply is normal; after the power grid is cut off, the system automatically enters an inversion state to provide an emergency power supply for an elevator control system; and when the power supply of the power grid is recovered, the power grid is recovered to a standby charging state. The utility model discloses an elevator emergency power supply system can provide emergency power supply for elevator control system, with elevator slow motion to flat bed position, ensures the safe operation of elevator. The battery management system in the system can display the residual electric quantity and the health state of the battery pack in real time so as to ensure that the battery pack can safely and reliably run when the power grid is powered off.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (10)
1. An elevator emergency power supply system is characterized by comprising a power grid power supply, a charging circuit, a storage battery, an inverter circuit and a power supply switching unit;
the charging circuit is respectively connected with the power grid power supply and the storage battery, and the storage battery is charged by the power grid power supply through the charging circuit when the power grid power supply is normal;
the inverter circuit is connected with the storage battery and is used for converting the direct current of the storage battery into alternating current used by an elevator load;
the power supply switching unit is respectively connected with the power grid power supply and the inverter circuit and used for switching to the storage battery to supply power to the elevator load when the power grid power supply fails and switching to the power grid power supply to supply power to the elevator load when the power grid power supply is normal.
2. The elevator emergency power supply system according to claim 1, further comprising a switching time setting unit for setting a time from a power failure of the grid power supply to a start-up output of the storage battery.
3. The elevator emergency power supply system according to claim 2, wherein the switching time setting unit sets the switching time within a range of 10 to 60 seconds.
4. Elevator emergency power supply system according to claim 1, characterized in that the system further comprises a stopping mode setting unit for setting the stopping mode of the elevator when the accumulator supplies power to the elevator load.
5. The elevator emergency power supply system according to claim 4, wherein the shutdown mode includes:
and stopping after the continuous work is carried out for a preset time, switching to a power grid power supply to supply power to an elevator load after rescue is finished, and/or working until the power of a storage battery is exhausted.
6. The elevator emergency power supply system of claim 1, wherein the charging circuit comprises a voltage step-down module and a charging module; the voltage reduction module is respectively connected with the power grid power supply and the charging module and is used for reducing the voltage of the power grid power supply and outputting the reduced voltage to the charging module; the charging module is connected with the storage battery and used for converting and outputting the voltage received by the voltage reduction module to the storage battery to charge the storage battery.
7. The elevator emergency power supply system of claim 6, wherein the charging module charges the battery using a variable frequency pulse charging method.
8. The elevator emergency power supply system according to claim 1, wherein the inverter circuit includes an inverter and a boost module; the inverter is respectively connected with the storage battery and the boosting module and is used for converting direct current of the storage battery into alternating current and transmitting the alternating current to the boosting module; the boosting module is used for boosting the alternating current received from the inverter and converting the alternating current into the alternating current used by an elevator load.
9. The elevator emergency power supply system of claim 1, wherein the power switching unit is a circuit breaker.
10. The elevator emergency power supply system according to any one of claims 1 to 9, wherein the storage battery is a liquid-free and maintenance-free battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921145119.2U CN209982171U (en) | 2019-07-19 | 2019-07-19 | Elevator emergency power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921145119.2U CN209982171U (en) | 2019-07-19 | 2019-07-19 | Elevator emergency power supply system |
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| Publication Number | Publication Date |
|---|---|
| CN209982171U true CN209982171U (en) | 2020-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921145119.2U Active CN209982171U (en) | 2019-07-19 | 2019-07-19 | Elevator emergency power supply system |
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| CN (1) | CN209982171U (en) |
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- 2019-07-19 CN CN201921145119.2U patent/CN209982171U/en active Active
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