CN115566789A - Control method of elevator backup power supply - Google Patents
Control method of elevator backup power supply Download PDFInfo
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- CN115566789A CN115566789A CN202211400656.3A CN202211400656A CN115566789A CN 115566789 A CN115566789 A CN 115566789A CN 202211400656 A CN202211400656 A CN 202211400656A CN 115566789 A CN115566789 A CN 115566789A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Elevator Control (AREA)
Abstract
The invention provides a control method of an elevator backup power supply. The invention provides a control method of an elevator backup power supply, which is convenient for supplying power in time when the elevator is powered off and power is cut off so as to keep the elevator running stably and reduce the running pressure of commercial power. A control method of an elevator backup power supply specifically comprises the following steps of S1, detecting and analyzing high and low peak stages of commercial power consumption, S2, controlling charging and power supply conditions of the elevator backup power supply, S3, detecting and judging on-off electric signals of the commercial power, S4, detecting the state of the elevator backup power supply, and S5, controlling the running state of an elevator. The elevator backup power supply is used as an auxiliary power supply, and when the mains supply is suddenly cut off or the mains supply is in a power utilization peak stage, the elevator backup power supply can supply power in time so as to keep the elevator to stably run.
Description
Technical Field
The invention relates to the technical field of elevator backup power supplies, in particular to a control method of an elevator backup power supply.
Background
At present, the elevators of residential districts of China are generally supplied with power by commercial power, and a considerable number of residential districts have the problems of power supply shortage, commercial power line maintenance and the like every year, so that temporary power failure is needed, and great inconvenience is brought to residents of the residential districts at the moment.
Patent application No. CN202123046051.2 discloses a one-stop backup power supply device, which includes: the emergency power supply comprises a charging module, an input power supply detection module, an emergency power supply main control module, a battery module, a power supply switching module and a power supply conversion module; the charging module is connected with an external power supply, the input power supply detection module is respectively connected with the input end of the charging module and the emergency power supply main control module, the battery module is connected with the charging module, the power supply switching module is connected with the emergency power supply main control module, the power supply switching module is connected with the external power supply according to a control signal, or the power supply switching module is connected with the battery module and the power supply conversion module according to the control signal; the power supply conversion module is connected with the emergency power supply main control module and is connected with the battery module according to the control signal. But above-mentioned patent can not solve in time power supply then and keep elevator even running when the elevator has a power failure to alleviate the requirement of commercial power operation pressure when not realizing the elevator operation.
In view of the above technical problems, a control method of an elevator backup power supply is needed to be designed, which is convenient for timely supplying power when the elevator is powered off and then keeping the elevator running stably and reducing the running pressure of the commercial power.
Disclosure of Invention
In order to overcome the defects that the power supply is timely supplied when the elevator is powered off and then the elevator is kept to stably run when the elevator is not powered off, and the requirement of lightening the running pressure of commercial power when the elevator runs is not realized, the technical problem of the invention is as follows: the control method of the elevator backup power supply is convenient for supplying power in time when the elevator is powered off and then keeping the elevator running stably, and the commercial power running pressure is relieved.
The technical implementation scheme of the invention is as follows: a control method of an elevator backup power supply specifically comprises the following steps,
s1, detecting and analyzing high and low peak stages of electric power consumption of commercial power
Monitoring and acquiring the power consumption condition of the commercial power in the cell in real time, and counting the consumption of the commercial power through data statistical analysis, so as to carry out the power consumption peak stage, the power consumption valley stage and the power consumption peak stage of the commercial power in the cell;
s2, controlling the charging and power supplying conditions of the backup power supply of the elevator
Acquiring the current time in real time, comparing the current time with the time periods of the high peak and the low peak of the commercial power in the statistical analysis in the step S1, and controlling the charging and power supply conditions of the elevator backup power supply;
s3, detecting and judging on-off electric signals of commercial power
Judging whether the commercial power is in a power-on signal, if the commercial power is in a power-on state, no operation is performed, if the commercial power is in a power-off state, the elevator backup power supply is switched from the auxiliary power supply to a direct power supply to supply power to the elevator, and entering a step S4;
s4, detecting the state of the backup power supply of the elevator
Detecting and acquiring the power supply allowance of the elevator backup power supply in real time, and entering a step S5;
s5, controlling the running state of the elevator
The state of the elevator is detected in real time, if the state exceeds the estimated time and is not used, the backup power supply of the elevator is controlled to be powered off, and if the detected distance between a person and the elevator is smaller than a preset value, a signal is transmitted to the backup power supply of the elevator to supply power for the elevator.
As a preferred technical scheme of the invention, the step S2 specifically comprises the following steps,
s2.1, detecting and judging whether the commercial power is in the peak period of power utilization
If the commercial power is in the electricity utilization peak stage, the elevator is controlled to be disconnected from the commercial power, the elevator backup power source is used as a direct power source to supply power for the elevator, and if the commercial power is not in the electricity utilization peak stage, the step S2.2 is carried out;
s2.2, detecting and judging whether the commercial power is in a valley stage of the power utilization level
If the commercial power is in a power consumption valley stage, controlling the elevator backup power source to be connected with the commercial power to enter a charging state, taking the elevator backup power source as a direct power source to supply power to the elevator, and if the commercial power is in a power consumption low peak stage, entering a step S2.3;
s2.3, using the commercial power supply as a direct power supply to supply power for the elevator
If the commercial power is in the power consumption low-peak stage, the elevator backup power source and the commercial power are controlled to be connected to enter a charging state, the commercial power source serves as a direct power source to supply power for the elevator, and the elevator backup power source serves as an auxiliary power source to supply power for the elevator.
As a preferable technical proposal of the invention, the method also comprises the following steps,
a1, detecting working signals of backup power supply of elevator
Judging whether the elevator backup power supply is in a state of serving as a direct power supply to supply power to the elevator, if the elevator backup power supply is in the state of serving as the direct power supply to supply power to the elevator, monitoring the power quantity of the elevator backup power supply in real time, turning off the elevator when the power quantity is lower than a power supply power preset value, and if the elevator backup power supply is in the state of serving as an auxiliary power supply to supply power to the elevator, entering the step A2;
a2, detecting normal power supply signals of the elevator backup power supply
If the elevator backup power supply is in a normal power supply state, no operation is performed, and if the elevator backup power supply is in abnormal power supply, an alarm signal is sent.
As a preferable technical proposal of the invention, the method also comprises the following steps,
b1, detecting the power supply quantity of the backup power supply of the elevator
If the elevator backup power supply is in a state that the direct power supply supplies power to the elevator, detecting and acquiring the power supply allowance of the elevator backup power supply in real time;
b2, controlling different operation modes of the elevator
B2.1, judging whether the power supply quantity of the elevator backup power supply is higher than a power supply preset value or not, if so, controlling the elevator to normally operate, and if not, controlling the elevator not to operate at a lower floor;
and B2.2, judging whether the power supply quantity of the elevator backup power supply is lower than a power supply power preset value or not, and controlling the elevator not to operate if the power supply quantity of the elevator backup power supply is lower than the power supply power preset value.
As a preferred technical scheme of the invention, the estimated time in the step S5 is 10-15min, and the preset distance value in the step S5 is 1-2m.
As a preferable technical scheme of the invention, the power supply power preset value in the step B2 is 10-15% of the total capacity of the elevator backup power supply, the power supply preset value in the step B2 is 50-55% of the total capacity of the elevator backup power supply, and the floor lower level in the step B2 is 2-4 floors.
As a preferred technical scheme of the invention, the elevator backup power supply consists of 2-3 lithium battery management systems and 2-3 lithium battery packs with the voltage of 48V and the voltage of 100Ah, and the lithium battery packs are connected in parallel to meet the power consumption of the elevator of the civil residence of 11kW-13 kW.
As a preferred technical scheme of the invention, the battery cell of the lithium battery PACK is manufactured by a PACK process.
The beneficial effects are that: 1. the elevator backup power supply can timely supply power to keep the elevator running stably when the commercial power is suddenly cut off or the commercial power is in a power consumption peak stage.
2. According to the invention, the operation of the elevator is ensured by detecting the working signal of the elevator backup power supply, the power supply quantity of the elevator backup power supply is monitored in real time, so that accidents caused by no electric quantity of the elevator backup power supply when the elevator is operated are avoided, and when the elevator backup power supply is monitored in real time as an auxiliary power supply and is abnormal, the possible abnormality of the elevator backup power supply is prompted, and the situation that the elevator backup power supply cannot supply power to the elevator when the mains supply is cut off or the mains supply is in a peak power consumption period is avoided.
3. According to the invention, the power supply allowance of the elevator backup power supply is detected and obtained in real time, and then different operation modes of the elevator are controlled, so that the service life of the elevator backup power supply is prolonged, and the waste of energy is avoided.
Drawings
Fig. 1 is a flow chart schematically showing a control method of an elevator backup power supply of the present invention.
Fig. 2 is a first partial flow chart of the control method of the elevator backup power supply of the invention.
Fig. 3 is a second partial flow chart of the control method of the elevator backup power supply of the invention.
Detailed Description
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Example 1
When the elevator back-up power supply is needed to supply power to the elevator, a control method of the elevator back-up power supply can be adopted, wherein the elevator back-up power supply comprises 3 lithium battery management systems and 3 lithium battery PACKs of 48V and 100Ah, the lithium battery PACKs are connected in parallel, the power consumption of the elevator of the civil residence of 12kW is met, and the battery cells of the lithium battery PACKs are manufactured through a PACK process.
As shown in fig. 1-3, a method for controlling an elevator backup power supply specifically comprises the following steps,
s1, detecting and analyzing high and low peak stages of electric power consumption of commercial power
The method comprises the steps that a cell utilizing an elevator back-up power supply is monitored in real time, the electricity consumption condition of the cell within 72 hours before commercial power is obtained, real-time commercial power electricity consumption data are obtained through statistics, a rectangular coordinate system is established according to the data, time is used as a horizontal coordinate, the electricity consumption is used as a vertical coordinate, the usage of the commercial power is counted and drawn to form an electricity consumption data graph, the electricity consumption stage of the commercial power in the cell is divided through the electricity consumption data graph, and the electricity consumption stage is specifically divided into an electricity consumption peak stage, an electricity consumption level valley stage and an electricity consumption low peak stage;
s2, controlling the charging and power supplying conditions of the backup power supply of the elevator
The method comprises the following steps of obtaining the current running time of the elevator in real time, comparing the current running time with the power utilization stage of the mains supply which is statistically analyzed in the step S1 to obtain which power utilization stage the running time is in, and controlling the charging and power supply conditions of the backup power supply of the elevator through the power utilization stage, wherein the specific steps are as follows;
s2.1, detecting and judging whether the commercial power is in the peak period of power utilization
If the obtained time period is the period when the commercial power is in the electricity utilization peak, controlling the power supply of the elevator to be disconnected with the commercial power, so that the elevator backup power is used as a direct power supply to supply power for the elevator, the elevator backup power continuously discharges to keep the elevator stably running, and if the obtained time period is the period when the commercial power is not in the electricity utilization peak, entering the step S2.2;
s2.2, detecting and judging whether the commercial power is in a power utilization valley stage
If the obtained time period is that the mains supply is in a power consumption valley stage, the elevator backup power supply is communicated with the elevator backup power supply, after the fact that the elevator backup power supply sends a charging requirement is confirmed, the elevator backup power supply is controlled to be connected with the mains supply to enter a charging state, direct current 48V power is output to the elevator backup power supply, the elevator backup power supply still serves as a direct power supply to supply power for the elevator, and if the obtained time period is that the mains supply is in a power consumption low peak stage, the step S2.3 is carried out;
s2.3, using the commercial power supply as a direct power supply to supply power for the elevator
If the obtained time period is the time period when the commercial power is in the low-peak electricity utilization stage, controlling the elevator backup power supply to be communicated with the commercial power to enter a charging state, outputting direct current 48V electricity to the elevator backup power supply, using the commercial power supply as a direct power supply to supply power for the elevator, and using the elevator backup power supply as an auxiliary power supply to supply power for the elevator;
s3, detecting and judging on-off electric signals of commercial power
Monitoring a signal of commercial power in real time, judging whether the commercial power is in a power-on signal, if the commercial power is in a power-on state, no operation is performed, if the commercial power is in a non-power-on state, the commercial power is powered off, if the commercial power is in a power utilization peak stage or a power utilization level valley stage at the moment, a backup power source of the elevator is still used as a direct power source to supply power for the elevator, if the commercial power is in a power utilization low peak stage at the moment, the backup power source of the elevator is switched from an auxiliary power source to the direct power source to supply power for the elevator, and the step S4 is entered;
s4, detecting the state of the backup power supply of the elevator
Monitoring and acquiring the power supply allowance of the elevator backup power supply in real time, and entering a step S5;
s5, controlling the running state of the elevator
The state of real-time detection elevator, when the elevator exceeded 10min and did not use, did not take the elevator and did not have the people to be close to the elevator promptly, control elevator backup power outage this moment prevents elevator backup power's excessive loss, if detect personnel when being less than 1.5m from the elevator, transmission signal to elevator backup power for elevator backup power supplies power for the elevator, and the people of being convenient for use.
Through the use peak value stage of analysis commercial power, and then control elevator back-up source's the circumstances of charging, supplying power, realize further implementing the peak clipping and fill a valley power consumption measure, reach the purpose that alleviates commercial power operation pressure, still regard elevator back-up source as auxiliary power source when supplying power for the elevator through at commercial power source, when commercial power outage suddenly or commercial power is in power consumption peak period, elevator back-up source can in time supply power then keep elevator even running.
Example 2
As shown in fig. 2, in order to prolong the service life of the elevator backup power supply, the control method of the elevator backup power supply further comprises the following steps,
a1, detecting working signals of backup power supply of elevator
Judging whether the elevator backup power supply is in a state of supplying power to the elevator as a direct power supply, if so, ensuring the operation of the elevator, monitoring the power supply quantity of the elevator backup power supply in real time to avoid accidents caused by no electricity of the elevator backup power supply when the elevator is operated, and when the power supply quantity of the elevator backup power supply is lower than 10 percent of the total capacity of the elevator backup power supply, turning off the elevator, and if so, entering the step A2;
a2, detecting normal power supply signal of elevator backup power supply
If the elevator backup power supply is in the normal power supply state, no operation, if the elevator backup power supply is in the abnormal power supply, an alarm signal is sent out to prompt that the elevator backup power supply possibly has abnormity, and the situation that the elevator backup power supply cannot supply power for the elevator when the commercial power is cut off or the commercial power is in the power consumption peak period is avoided.
Through detecting elevator backup power supply operating signal, and then need guarantee the function of elevator, need the power volume of real-time supervision elevator backup power supply, avoid the elevator because elevator backup power supply does not have the electric quantity when the function and cause the accident to when real time monitoring elevator backup power supply is unusual as auxiliary power supply, suggestion elevator backup power supply probably has the anomaly, avoids commercial power outage or commercial power to be in and can't supply power for the elevator when the peak period.
As shown in fig. 3, a method for controlling a backup power source of an elevator further includes the steps of,
b1, detecting the power supply quantity of the backup power supply of the elevator
If the elevator backup power supply is in a state that the direct power supply supplies power to the elevator, detecting and acquiring the power supply allowance of the elevator backup power supply in real time;
b2, controlling different operation modes of the elevator
B2.1, judging whether the power supply quantity of the elevator backup power supply is higher than 50% of the total capacity of the elevator backup power supply, if so, controlling the elevator to normally operate, and if not, controlling the elevator not to operate on the floor 3 or below;
and B2.2, judging whether the power supply quantity of the elevator backup power supply is lower than 10% of the total capacity of the elevator backup power supply, and controlling the elevator not to operate if the power supply quantity of the elevator backup power supply is lower than 10% of the total capacity of the elevator backup power supply.
Through real-time detection and acquire elevator backup power's power surplus, the different operation modes of control elevator then realize prolonging the waste of long and avoiding the energy of elevator backup power's use.
The present application is described in detail above, and the principles and embodiments of the present application are described herein by using specific examples, which are only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (8)
1. A control method of an elevator backup power supply is characterized by comprising the following steps,
s1, detecting and analyzing high and low peak stages of electric power consumption of commercial power
Monitoring and acquiring the power consumption condition of the commercial power in the community in real time, and counting the consumption of the commercial power through data statistics and analysis, so as to carry out the power consumption peak stage, the power consumption level valley stage and the power consumption low peak stage of the commercial power in the community;
s2, controlling the charging and power supplying conditions of the backup power supply of the elevator
Acquiring the current time in real time, comparing the current time with the high-peak and low-peak periods of the mains power consumption analyzed statistically in the step S1, and controlling the charging and power supply conditions of the elevator backup power supply;
s3, detecting and judging on-off electric signals of commercial power
Judging whether the commercial power is in a power-on signal, if the commercial power is in a power-on state, no operation is performed, if the commercial power is in a power-off state, the elevator backup power supply is switched from the auxiliary power supply to a direct power supply to supply power to the elevator, and entering a step S4;
s4, detecting the state of the backup power supply of the elevator
Detecting and acquiring the power supply allowance of the elevator backup power supply in real time, and entering a step S5;
s5, controlling the running state of the elevator
The state of the elevator is detected in real time, if the state exceeds the predicted time and is not used, the power of the elevator backup power supply is controlled to be cut off, and if the fact that the distance between a person and the elevator is smaller than a preset value is detected, a signal is transmitted to the elevator backup power supply to supply power for the elevator.
2. The method for controlling an elevator backup power supply according to claim 1, wherein the step S2 comprises the steps of,
s2.1, detecting and judging whether the commercial power is in the peak period of power utilization
If the commercial power is in the electricity utilization peak stage, the elevator is controlled to be disconnected from the commercial power, the elevator backup power source is used as a direct power source to supply power for the elevator, and if the commercial power is not in the electricity utilization peak stage, the step S2.2 is carried out;
s2.2, detecting and judging whether the commercial power is in a power utilization valley stage
If the commercial power is in a power consumption valley stage, controlling the elevator backup power source to be connected with the commercial power to enter a charging state, taking the elevator backup power source as a direct power source to supply power to the elevator, and if the commercial power is in a power consumption low peak stage, entering a step S2.3;
s2.3, the commercial power supply is used as a direct power supply to supply power for the elevator
If the commercial power is in the power consumption low peak stage, the elevator backup power source is controlled to be connected with the commercial power to enter a charging state, the commercial power source serves as a direct power source to supply power for the elevator, and the elevator backup power source serves as an auxiliary power source to supply power for the elevator.
3. The method for controlling an elevator backup power supply according to claim 2, further comprising the steps of,
a1, detecting working signals of backup power supply of elevator
Judging whether the elevator backup power supply is in a state of supplying power to the elevator as a direct power supply, if the elevator backup power supply is in a state of supplying power to the elevator as a direct power supply, monitoring the power quantity of the elevator backup power supply in real time, turning off the elevator when the power quantity is lower than a power preset value, and if the elevator backup power supply is in a state of supplying power to the elevator as an auxiliary power supply, entering the step A2;
a2, detecting normal power supply signal of elevator backup power supply
If the elevator backup power supply is in a normal power supply state, no operation is performed, and if the elevator backup power supply is in abnormal power supply, an alarm signal is sent.
4. The method of claim 3, further comprising the step of,
b1, detecting the power supply quantity of the backup power supply of the elevator
If the elevator backup power supply is in a state that the direct power supply supplies power to the elevator, detecting and acquiring the power supply allowance of the elevator backup power supply in real time;
b2, controlling different operation modes of the elevator
B2.1, judging whether the power supply quantity of the elevator backup power supply is higher than a power supply preset value or not, if so, controlling the elevator to normally operate, and if not, controlling the elevator not to operate at a lower floor;
and B2.2, judging whether the power supply quantity of the elevator backup power supply is lower than a power supply power preset value or not, and controlling the elevator not to operate if the power supply quantity of the elevator backup power supply is lower than the power supply power preset value.
5. The method for controlling a backup power source of an elevator according to claim 1, wherein the estimated time in step S5 is 10-15min, and the distance in step S5 is 1-2m.
6. The method for controlling an elevator backup power supply according to claim 4, wherein the power supply power preset value in step B2 is 10-15% of the total capacity of the elevator backup power supply, the power supply preset value in step B2 is 50-55% of the total capacity of the elevator backup power supply, and the floor lower in step B2 is 2-4 floors.
7. The control method of the elevator backup power supply as claimed in claim 1, wherein the elevator backup power supply comprises 2-3 lithium battery management systems and 2-3 lithium battery packs of 48V and 100Ah, and the lithium battery packs are connected in parallel to satisfy the electricity consumption of the civil residential elevator of 11kW-13 kW.
8. The method for controlling the backup power supply of the elevator as claimed in claim 1, wherein the cells of the lithium battery PACK are made by PACK process.
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