Elevator control system with electricity saving quantity calculation function

Abstract

The invention discloses an elevator control system with an electricity-saving quantity calculation function, which relates to the field of elevator control and comprises an energy-saving control module, a first electric energy sampling module, a second electric energy sampling module, a third electric energy sampling module, a fourth electric energy sampling module, a fifth electric energy sampling module, a battery module, a conversion module and an auxiliary power supply module, the mains supply and the battery module are used for supplying power to the auxiliary power supply module, the auxiliary power supply module supplies power to the energy-saving control module and the conversion module, the alternating-current side of the conversion module is connected with the second electric energy sampling module connected with the mains supply, and the direct-current side of the conversion module is connected with the battery module; the third electric energy sampling module is arranged between the joint of the conversion module and the battery module and the battery module, the fifth electric energy sampling module is arranged between the joint of the conversion module and the battery module and each elevator, and the fourth electric energy sampling module is arranged between each elevator and the mains supply; the first electric energy sampling module is arranged between the auxiliary power supply module and the commercial power. According to the invention, the saved total electric quantity can be calculated.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator control systems, and in particular to an elevator control system with a power saving calculation function. Background Art

[0002] Currently, elevators primarily rely on mains electricity. When the mains power goes out, the elevator cannot operate. Although some elevators are equipped with battery modules, their limited capacity prevents them from maintaining stable operation for extended periods, disrupting daily life. Furthermore, when the elevator's main circuit is driven, regenerative energy is generated. However, this energy is typically dissipated through resistors, resulting in significant energy waste.

[0003] Some current elevator energy-saving control systems recycle the energy generated by the elevator drive into the battery module. However, they are unable to accurately calculate the amount of electricity saved after the installation of the elevator energy-saving control system. Consequently, they are unable to accurately calculate the return on investment of the elevator energy-saving control system, which affects the long-term development plan of the elevator energy-saving control system. Summary of the Invention

[0004] In order to solve the technical problems existing in the background technology, the present invention proposes an elevator control system with a power saving calculation function.

[0005] The present invention proposes an elevator control system with a power saving calculation function, comprising: a battery module, a conversion module, an auxiliary power supply module and an energy saving control module; The electrode connection end of the battery module is connected to a third power sampling module, the third power sampling module is connected to at least one fifth power sampling module, the at least one fifth power sampling module is connected to the connection end of at least one elevator in a one-to-one correspondence, and each elevator is connected to the mains power with a fourth power sampling module; The input end of the auxiliary power supply module is respectively connected to the mains and the electrode connection end of the battery module, the output end of the auxiliary power supply module is respectively connected to the power supply end of the energy-saving control module and the power supply end of the conversion module, the AC side of the conversion module is used to connect to the mains, and a second power sampling module is connected between the AC side of the conversion module and the mains, and the DC side of the conversion module is connected to the electrode connection end of the battery module; a first power sampling module is connected between the auxiliary power supply module and the mains, and a second power sampling module is connected between the conversion module and the mains; The energy-saving control module is respectively communicatively connected with the first power sampling module, the second power sampling module, the third power sampling module, the fourth power sampling module and the fifth power sampling module, the battery module, the conversion module and the auxiliary power supply module.

[0006] Preferably, the battery module is used to power the auxiliary power supply module and the elevator; the conversion module is used to convert the mains power into direct current and charge the battery module; the auxiliary power supply module is used to power the energy-saving control module and the conversion module, and the auxiliary power supply module is also used to control its power input to switch between the mains power and the battery module; The first power sampling module is used to obtain first power usage information of the mains supplying power to the auxiliary power supply module; the second power sampling module is used to obtain second power usage information of the mains supplying power to the conversion module; the third power sampling module is used to obtain third power usage information of the battery module discharging or fourth power usage information of the battery module charging; the fourth power sampling module is used to obtain fifth power usage information of the mains supplying power to each elevator; the fifth power sampling module is used to obtain sixth power usage information of the battery module supplying power to each elevator or seventh power usage information of each elevator discharging power from the battery module; The energy-saving control module is used to obtain mains power information, power information of the battery module, first power usage information, second power usage information, third power usage information, fourth power usage information and fifth power usage information, and control the coordinated actions of the battery module, the conversion module and the auxiliary power supply module according to the mains power information and the power information of the battery module to achieve energy-saving power consumption of at least one elevator, and calculate the total power saved according to the first power usage information, the second power usage information, the third power usage information, the fourth power usage information, the fifth power usage information, the sixth power usage information and the seventh power usage information.

[0007] Preferably, the total power saved is ; Where, Indicates the total power. Indicates the first electricity usage information, Second, electricity usage information, Indicates the third electricity usage information, Indicates the fourth power consumption information , represents the fifth electricity consumption information, N is the number of elevators, , , Indicates the sixth electricity usage information, Indicates the seventh electricity usage information.

[0008] Preferably, when the mains power is cut off, the auxiliary power supply module switches its power input to the battery module; and controls the conversion module not to operate, and controls the battery module to supply power to the elevator or receive regenerative energy generated by the elevator rising or descending or to not charge or discharge with the elevator.

[0009] Preferably, each power usage information further includes current, frequency and power; when the first power usage information, the second power usage information and the fifth power usage information all meet the power outage preset conditions, the current mains power is in a power outage state; Among them, the power outage preset conditions are current < mains stable current threshold and duration > mains stable duration threshold, voltage < mains stable voltage threshold and duration > mains stable duration threshold, frequency < mains stable frequency threshold and duration > mains stable duration threshold, power < mains stable power threshold and duration > mains stable duration threshold Preferably, when the mains is available, the energy-saving control module is used to control the auxiliary power supply module to switch its power input from the mains to the battery module.

[0010] Preferably, when the mains is powered and the battery module meets the first preset condition, the energy-saving control module controls the auxiliary power supply module to switch its power input from the mains to the mains, and controls the conversion module to convert the mains into direct current to charge the battery module, and controls the battery module to supply power to the elevator or receive the regenerative energy generated by the elevator rising or descending or to not charge or discharge with the elevator; wherein the first preset condition is that the voltage of any single cell in the battery module is less than the single cell undervoltage threshold, and the SOC of any single cell in the battery module is less than the single cell undervoltage threshold. <Single cell capacity low threshold SOC th低 , the total voltage of the battery module is less than the battery module low voltage threshold or the SOC of the battery module is less than the battery module capacity low threshold.

[0011] Preferably, in the process of converting AC power into DC power to charge the battery module, when the battery module meets the second preset condition, the energy-saving control module controls the auxiliary power supply module to operate so as to switch the power input of the auxiliary power supply module to the battery module, and controls the conversion module not to operate so as to stop using AC power to charge the battery module, and at the same time controls the battery module to automatically discharge to the elevator or automatically receive the regenerated energy generated by the elevator rising or descending or not charge or discharge with the elevator; wherein the second preset condition is that the total voltage of the battery module is greater than the high voltage threshold of the battery module, the SOC of the battery module is greater than the high capacity threshold of the battery module, the voltage of any single cell in the battery module is greater than the high voltage threshold of the single cell or the SOC of any single cell in the battery module is greater than the high capacity threshold of the single cell.

[0012] Preferably, when the mains electricity is available, the battery module meets the first preset condition, and the current mains electricity price is in the lowest electricity price period of the day, the energy-saving control module controls the conversion module to convert the mains electricity into direct current to charge the battery module, and at the same time the battery module automatically receives the regenerated energy generated by the elevator rising or falling.

[0013] Preferably, during the process of converting the mains electricity into direct current to charge the battery module every predetermined number of times, the energy-saving control module further controls the battery module to perform global OCV calibration and balancing.

[0014] Preferably, during the process of converting the mains electricity into direct current to charge the battery module every predetermined number of times, when the SOC of the battery module reaches the high threshold value of the battery module capacity, the energy-saving control module records the time when the SOC of the battery module reaches the high threshold value of the battery module capacity as T 充 ; Calculate the time difference T between the time when the SOC of the battery module reaches the high threshold of the battery module capacity and the time when the lowest electricity price period of the day ends 余 ; Among them, T 余 =T 低结 -T 充 , T 低结 Indicates the end time of the lowest electricity price period of the day; If T 余 >T 均衡min , and the battery module capacity high threshold is less than 100%, the energy-saving control module controls the conversion module to continue charging the battery module, and synchronously controls the elevator that generates regenerative power to charge the battery module until the SOC of the battery module reaches 100% or the battery module meets the second preset condition; When the battery module SOC reaches 100% or the battery module meets the second preset condition, the energy-saving control module controls the conversion module to stop operating to stop using the mains to charge the battery module, and controls the battery module to start the battery cell full-range OCV calibration and balancing until T 余 End; among them, T 均衡min The minimum time required to calibrate and equalize the OCV of all cells in the battery module; like T 余 > T 均衡min , and the battery module capacity high threshold = 100%, the energy-saving control module controls the battery module to start the battery cell full-range OCV calibration balance until T 余 Finish; like T 余 ≤ T 均衡min , the energy-saving control module controls the battery module to start the full-range OCV calibration and balancing of the battery cells until T 余 Finish.

[0015] Preferably, when the mains is powered and the battery module meets the third preset condition, the energy-saving control module controls the auxiliary power supply module so that the power input of the auxiliary power supply module is switched to the battery module, and controls the conversion module not to operate and controls the battery module to automatically discharge to the elevator or automatically receive the regenerative energy generated by the elevator rising or descending or not charge or discharge with the elevator, or controls the conversion module to operate to invert the DC power of the battery module into AC power and transmit it to the mains; wherein the third preset condition is that the voltage of any single cell in the battery module is ≥ the single cell undervoltage threshold, the SOC of any single cell in the battery module is ≥ ≥Single cell capacity low threshold SOC th低 , the total voltage of the battery module ≥ the battery module low voltage threshold and the SOC of the battery module ≥ the battery module capacity low threshold.

[0016] Preferably, it also includes a circuit breaker, at least one contactor group and at least one fuse group; the connection between the DC side of the conversion module and the electrode connection end of the battery module is connected to the input end of the circuit breaker, the output end of the circuit breaker is respectively connected to the input end of at least one contactor group, the output end of at least one contactor group is connected one-to-one with the input end of at least one fuse group, the output end of at least one fuse group is used to be connected one-to-one with the connection end of at least one elevator, at least one fifth electric energy sampling module is used to be connected between at least one contactor group and the corresponding elevator, the circuit breaker and at least one contactor group are electrically connected to the auxiliary power supply module and are communicatively connected to the energy-saving control module.

[0017] Preferably, when the elevator is operating normally, the energy-saving control module controls the circuit breaker and each contactor group to close, and obtains the status information of the elevator and the power information of the battery module; and controls the battery module and the contactor group to cooperate according to the status information of the elevator and the power information of the battery module so that the battery module can supply power to the elevator or receive the regenerative energy generated by the ascent or descent of the elevator or neither charge nor discharge with the elevator.

[0018] Preferably, the elevator status information includes the number N of elevators, the rated power and real-time power of each elevator, the number R of elevators generating regenerative power, and the number S of elevators consuming power; During the coordination process, the energy-saving control module calculates the total regenerative energy Q generated by R elevators based on the elevator status information. R And the total energy consumption Q of S elevators s ; Calculate the rechargeable capacity Q of the battery module based on the power information of the battery module 充max and discharge capacity Q 放max ; If Q R >Q s And Q R -Q s >Q 充max, then the control battery module receives the power to Q 充max When the contactor group corresponding to the R elevator is controlled to be disconnected; If Q R s And Q s -Q R >Q 放max , then the control battery module discharges to the elevator to Q 放max When the contactor group corresponding to the R elevator is controlled to be disconnected; If Q R = Q s , then the control battery module and the elevator will not charge or discharge.

[0019] Preferably, when all elevators are in maintenance status and stop running, the energy-saving control module controls the circuit breakers and each contactor group to be disconnected.

[0020] Preferably, when the mains is available, if the battery module meets the third preset condition, the energy-saving control module further controls the auxiliary power supply module to switch its power input to the battery module or the mains, and controls the battery module to maintain the working mode; if the battery module meets the first preset condition, the energy-saving control module further controls the auxiliary power supply module to switch its power input to the mains, and controls the conversion module to convert the mains into direct current and charge the battery module until the battery module meets the second preset condition, and controls the battery module to maintain the normal working mode; Among them, the third preset condition is that the voltage of any single cell in the battery module is ≥ the single cell undervoltage threshold, the SOC of any single cell in the battery module is ≥ Single cell capacity low threshold, total voltage of battery module ≥ battery module low voltage threshold and SOC of battery module ≥ battery module capacity low threshold; The first preset condition is that the voltage of any single cell in the battery module is less than the single cell undervoltage threshold, the SOC of any single cell in the battery module is less than the single cell undervoltage threshold, and the SOC of any single cell in the battery module is less than the single cell undervoltage threshold. < the low threshold of single cell capacity, the total voltage of the battery module < the low voltage threshold of the battery module, or the SOC of the battery module < the low threshold of the battery module capacity; Among them, the second preset condition is that the voltage of any single cell in the battery module is greater than the single cell voltage regulation threshold, the SOC of any single cell in the battery module is greater than the single cell capacity threshold, the total voltage of the battery module is greater than the battery module high voltage threshold or the SOC of the battery module is greater than the battery module capacity high threshold.

[0021] ​Preferably, when the mains power is cut off, if the battery module meets the third preset condition, the energy-saving control module further controls the auxiliary power supply module to switch its power input to the battery module, and controls the battery module to maintain the working mode; if the battery module meets the first preset condition, the energy-saving control module further controls the auxiliary power supply module to switch its power input to the battery module, and controls the battery management system in the battery module to power off and start the system sleep mode; Among them, the third preset condition is that the voltage of any single cell in the battery module is ≥ the single cell undervoltage threshold, the SOC of any single cell in the battery module is ≥ Single cell capacity low threshold, total voltage of battery module ≥ battery module low voltage threshold and SOC of battery module ≥ battery module capacity low threshold; The first preset condition is that the voltage of any single cell in the battery module is less than the single cell undervoltage threshold, the SOC of any single cell in the battery module is less than the single cell undervoltage threshold, and the SOC of any single cell in the battery module is less than the single cell undervoltage threshold. < Single cell capacity low threshold, total battery module voltage < battery module low voltage threshold, or battery module SOC < battery module capacity low threshold.

[0022] Preferably, after the system sleep mode is started, the energy-saving control module is further configured to automatically wake up every T time interval to detect whether the battery module meets a second preset condition; if the battery module meets the second preset condition, the energy-saving control module controls the system to exit the sleep mode, and switches the power supply of the auxiliary power supply module to the battery module, controlling the battery module to maintain the working mode; Among them, the second preset condition is that the voltage of any single cell in the battery module is greater than the single cell voltage regulation threshold, the SOC of any single cell in the battery module is greater than the single cell capacity threshold, the total voltage of the battery module is greater than the battery module high voltage threshold or the SOC of the battery module is greater than the battery module capacity high threshold.

[0023] Preferably, after starting the system sleep mode, the energy-saving control module is also used to automatically wake up every T time to detect whether the elevator resumes operation; if the elevator resumes operation, the energy-saving control module controls the exit of the system sleep mode, and controls the circuit breaker and each contactor group to be closed, and controls the battery management system of the battery module to operate normally, and controls the battery module and the contactor group to cooperate so that the battery module can supply power to the elevator or receive the regenerative energy generated by the elevator rising or descending, or neither charge nor discharge with the elevator.

[0024] Preferably, in the process of controlling the battery module to maintain the working mode, the energy-saving control module is also used to detect whether the elevator resumes operation; if the elevator resumes operation, the energy-saving control module controls the circuit breaker and each contactor group to be closed, and controls the battery module and the contactor group to cooperate so that the battery module can supply power to the elevator or receive the regenerative energy generated by the elevator rising or descending or not charge or discharge with the elevator.

[0025] Preferably, the battery module includes Y Each battery pack includes a battery connected in series X cells; Among them, the conditions that the battery module needs to meet are Where, Indicates the maximum capacity of the battery module, Indicates the amount of electricity required for the normal operation of all elevators during the longest historical power outage of the local utility power supply; Indicates the amount of electricity required for normal operation of all elevators during the non-lowest electricity price period of the day; in, Where, Indicates the rated capacity of each battery cell; in, Where, Indicates the longest historical power outage time of the local city power supply. Indicates the The maximum power of the elevator, N represents the number of elevators, ; in, Where, Indicates the duration of the non-lowest electricity price period on the day.

[0026] During specific implementation, the battery module is used to supply power to the auxiliary power supply module and the elevator; the conversion module is used to convert the mains power into direct current and charge the battery module; the auxiliary power supply module is used to supply power to the energy-saving control module and the conversion module, and the auxiliary power supply module is also used to control its power input to switch between the mains power and the battery module; the first power sampling module is used to obtain first power usage information of the mains power supply to the auxiliary power supply module; the second power sampling module is used to obtain second power usage information of the mains power supply to the conversion module; the third power sampling module is used to obtain third power usage information of the battery module discharging or fourth power usage information of the battery module charging; the fourth power sampling module is used to obtain fifth power usage information of the mains power supply to each elevator; the fifth power sampling module is used to obtain sixth power usage information of the battery module supplying power to each elevator or seventh power usage information of each elevator discharging the battery module; The energy-saving control module is used to obtain mains power information, power information of the battery module, first power usage information, second power usage information, third power usage information, fourth power usage information and fifth power usage information, and control the coordinated actions of the battery module, the conversion module and the auxiliary power supply module according to the mains power information and the power information of the battery module to achieve energy-saving power consumption of at least one elevator, and calculate the total power saved according to the first power usage information, the second power usage information, the third power usage information, the fourth power usage information, the fifth power usage information, the sixth power usage information and the seventh power usage information.

[0027] In the present invention, the proposed elevator control system with a power saving calculation function uses an auxiliary power supply module to power the conversion module and the energy-saving control module throughout the entire life cycle of operation, which can effectively prevent the elevator energy-saving control system from being unable to operate during a city power outage. Moreover, the energy-saving control module simultaneously obtains city power information and battery module power information, and controls the coordinated actions of the battery module, the conversion module, and the auxiliary power supply module based on the city power information and the battery module power information to achieve energy-saving power consumption of at least one elevator, ensuring that the battery module and the elevator can charge and discharge each other. Moreover, each elevator can draw power from both the city power and the battery module, and the regenerated energy of the elevator drive can reversely charge the battery module, effectively improving the economy of elevator power consumption and reducing electricity costs. Moreover, the present invention can calculate the total power saved based on the first power consumption information, the second power consumption information, the third power consumption information, the fourth power consumption information, the fifth power consumption information, the sixth power consumption information, and the seventh power consumption information, facilitating the subsequent calculation of investment returns based on the total power saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural diagram of an elevator control system with a power saving calculation function in one embodiment of the present invention. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] like Figure 1 As shown, the present invention proposes an elevator control system with a power saving calculation function, comprising: a battery module, a conversion module, an auxiliary power supply module and an energy saving control module; The input end of the auxiliary power supply module is respectively connected to the mains and the electrode connection end of the battery module, the output end of the auxiliary power supply module is respectively connected to the power supply end of the energy-saving control module and the power supply end of the conversion module, the AC side of the conversion module is used to connect to the mains, and a second power sampling module is connected between the AC side of the conversion module and the mains, and the DC side of the conversion module is connected to the electrode connection end of the battery module; a first power sampling module is connected between the auxiliary power supply module and the mains, and a second power sampling module is connected between the conversion module and the mains; The energy-saving control module is respectively communicatively connected with the first power sampling module, the second power sampling module, the third power sampling module, the fourth power sampling module and the fifth power sampling module, the battery module, the conversion module and the auxiliary power supply module.

[0031] During specific implementation, the battery module is used to supply power to the auxiliary power supply module and the elevator; the conversion module is used to convert the mains power into direct current and charge the battery module; the auxiliary power supply module is used to supply power to the energy-saving control module and the conversion module, and the auxiliary power supply module is also used to control its power input to switch between the mains power and the battery module; the first power sampling module is used to obtain first power usage information of the mains power supply to the auxiliary power supply module; the second power sampling module is used to obtain second power usage information of the mains power supply to the conversion module; the third power sampling module is used to obtain third power usage information of the battery module discharging or fourth power usage information of the battery module charging; the fourth power sampling module is used to obtain fifth power usage information of the mains power supply to each elevator; the fifth power sampling module is used to obtain sixth power usage information of the battery module supplying power to each elevator or seventh power usage information of each elevator discharging the battery module; The energy-saving control module is used to obtain mains power information, power information of the battery module, first power usage information, second power usage information, third power usage information, fourth power usage information and fifth power usage information, and control the coordinated actions of the battery module, the conversion module and the auxiliary power supply module according to the mains power information and the power information of the battery module to achieve energy-saving power consumption of at least one elevator, and calculate the total power saved according to the first power usage information, the second power usage information, the third power usage information, the fourth power usage information, the fifth power usage information, the sixth power usage information and the seventh power usage information.

[0032] The present invention uses an auxiliary power supply module to power the conversion module and the energy-saving control module during the entire life cycle of operation, which can effectively prevent the problem that the elevator energy-saving control system cannot operate when the mains power is cut off; moreover, the energy-saving control module simultaneously obtains the mains power information and the power information of the battery module, and controls the coordinated action of the battery module, the conversion module and the auxiliary power supply module according to the mains power information and the power information of the battery module to achieve energy-saving power consumption of at least one elevator, thereby ensuring that the battery module and the elevator can charge and discharge each other, and each elevator can draw power from both the mains power and the battery module. The regenerated energy of the elevator drive can reversely charge the battery module, effectively improving the economy of elevator power consumption and reducing electricity costs. Moreover, the present invention can calculate the total amount of electricity saved based on the first electricity consumption information, the second electricity consumption information, the third electricity consumption information, the fourth electricity consumption information, the fifth electricity consumption information, the sixth electricity consumption information and the seventh electricity consumption information, which facilitates the subsequent calculation of investment returns based on the total amount of electricity saved.

[0033] Specifically, the energy-saving control module and the battery module in this embodiment are linked via CAN or daisy chain communication; the energy-saving control module and the conversion module are connected via CAN or RS485 or Ethernet port communication, and can be controlled and detected through dry contacts; the energy-saving control module and the auxiliary power supply module are controlled and detected via dry contacts, and can also be connected via CAN or RS485 or Ethernet port communication.

[0034] The total power saved is ; Where, Indicates the total power. Indicates the first electricity usage information, Second, electricity usage information, Indicates the third electricity usage information, Indicates the fourth power consumption information , represents the fifth electricity consumption information, N is the number of elevators, , , Indicates the sixth electricity usage information, Indicates the seventh electricity usage information.

[0035] With such configuration, the present embodiment can calculate the total amount of electricity saved, facilitating subsequent calculation of investment returns based on the total amount of electricity saved.

[0036] In one embodiment, PA is the sampling position of the first power sampling module, PB is the sampling position of the second power sampling module, PE is the sampling position of the third power sampling module, PC1~PCN are the sampling positions of the fourth power sampling module, and P1~PN are the sampling positions of the fifth power sampling module.

[0037] In one embodiment, during the coordinated action, when the mains power is cut off, the auxiliary power supply module switches its power input to the battery module; and controls the conversion module not to operate, and controls the battery module and the contactor group to cooperate so that the battery module can supply power to the elevator or receive the regenerative energy generated by the elevator rising or descending, or does not charge or discharge with the elevator.

[0038] This embodiment is configured in such a way that the battery module can supply power to the elevator and the elevator control system during a power outage, thereby ensuring stable operation of the elevator and the elevator control system.

[0039] If the elevator is connected to the mains power and the battery module in the elevator energy-saving control system as well as another backup power source, the elevator will always operate normally when the mains power is cut off. In this embodiment, the battery module is used as an auxiliary power supply, and the circuit breaker and each contactor group are controlled to be closed and the battery management system in the battery module operates normally, so that the battery module can supply power to the elevator or receive the regenerative energy generated by the elevator rising or descending, or can be neither charged nor discharged in the elevator.

[0040] In a further embodiment, each power usage information further includes current, frequency, and power; when the first power usage information, the second power usage information, and the fifth power usage information all meet the power outage preset conditions, the current mains power is in a power outage state; Among them, the preset conditions for power outage are current < mains stable current threshold and duration > mains stable duration threshold, voltage < mains stable voltage threshold and duration > mains stable duration threshold, frequency < mains stable frequency threshold and duration > mains stable duration threshold, or power < mains stable power threshold and duration > mains stable duration threshold.

[0041] Specifically, the first power usage information includes a first current I1, a first voltage V1, and a first power P1 supplied from the mains to the auxiliary power supply module. th And the duration t> the mains stability duration threshold T 市电th , the first voltage V1 < the mains voltage threshold V th And the duration t> the mains stability duration threshold T 市电th , the first frequency f1<the mains stable frequency threshold f th And the duration t> the mains stability duration threshold T 市电th Or the first power P1 < the mains power stability threshold P th And the duration t> the mains stability duration threshold T 市电th When the mains power is cut off.

[0042] The second power usage information includes the second current I2, the second voltage V2, and the second power P2 of the mains electricity to the conversion module. th And the duration t> the mains stability duration threshold T 市电th , the second voltage V2 < the mains stable voltage threshold V th And the duration t> the mains stability duration threshold T 市电th , the second frequency f2<the mains stable frequency threshold f th And the duration t> the mains stability duration threshold T 市电th Or the second power P2<the mains stable power threshold P th And the duration t> the mains stability duration threshold T 市电th When the mains power is cut off.

[0043] The fifth power usage information includes the third current I3, the third voltage V3, and the third power P3 of the mains electricity supplied to each elevator. th And the duration t> the mains stability duration threshold T 市电th , the third voltage V3 < the mains stable voltage threshold V th And the duration t> the mains stability duration threshold T 市电th, the third frequency f3 < the mains stable frequency threshold f th And duration t>T 市电th Or the third power P3 < the mains power stability threshold P th And the duration t> the mains stability duration threshold T 市电th When the mains power is cut off.

[0044] What you need to know is that When the elevator is working, the voltages at its connection terminals (positive terminal and negative terminal) are and , yes Any positive integer, N is the number of elevators. The voltage across the elevator during the entire working process and All in Range, The maximum power of the elevator is P cmaxi .

[0045] When the energy-saving control module controls the conversion module to not act, if , the battery module automatically Elevator discharge; among them, Indicates the The voltage of the elevator, Indicates the rated voltage of the battery module; if , the battery module automatically stores the The regenerative energy generated when an elevator ascends or descends.

[0046] In another embodiment, in the coordinated action, when the mains power is available, the energy-saving control module is used to control the action of the auxiliary power supply module so that the auxiliary power supply module switches its power input from the mains power or from the mains power to the battery module to ensure the stable operation of the elevator control system.

[0047] In a further embodiment, in the coordinated action, when the mains is powered and the battery module meets the first preset condition, the energy-saving control module controls the auxiliary power supply module to switch its power input from the mains to the mains, and controls the conversion module to convert the mains into direct current to charge the battery module, and controls the battery module to automatically receive the regenerative energy generated by the elevator rising or falling or to not charge or discharge with the elevator; wherein the first preset condition is that the voltage V of any single cell in the battery module is less than the single cell undervoltage threshold V th欠 , the SOC of any single cell in the battery module <Single cell capacity low threshold SOC th低 , the total voltage of the battery module VB Less than the battery module low voltage threshold V BTH低 Or the battery module SOC < battery module capacity low threshold SOC Bth低 ; During the process of converting the mains electricity into direct current to charge the battery module, when the battery module meets the second preset condition, the energy-saving control module controls the conversion module to be inactive, so as to stop using the mains electricity to charge the battery module, and controls the battery module to automatically discharge to the elevator or automatically receive the regenerative energy generated by the elevator's ascent or descent, or to neither charge nor discharge with the elevator; The second preset condition is the total voltage V B >Battery module high voltage threshold V BTH高 , Battery module SOC>Battery module capacity high threshold SOC Bth高 , the voltage of any single cell in the battery module is greater than the single cell high voltage threshold or the SOC of any single cell in the battery module is greater than the single cell capacity high threshold SOC th高 .

[0048] This embodiment is configured so that the power supply of the auxiliary power supply module can be switched to AC power in a timely manner, thereby ensuring the stable operation of the elevator control system, preventing the battery in a power-deficient state from continuing to discharge, and promptly stopping the use of AC power to charge the battery module when the second preset condition is met.

[0049] In a further embodiment, when the mains power is available, the battery module meets the first preset condition, and the current mains power price is in the lowest power price period of the day, the energy-saving control module controls the conversion module to convert the mains power into direct current to charge the battery module, and at the same time controls the battery module to automatically receive the regenerative energy generated by the elevator rising or descending or to neither charge nor discharge the energy between the elevator and the battery module.

[0050] This embodiment is configured in this way, so that the low-cost commercial electricity can be used to charge the battery as much as possible, thereby achieving energy-saving benefits.

[0051] During the process of converting the mains electricity into direct current to charge the battery module every predetermined number of times, the energy-saving control module also controls the battery module to perform global OCV calibration and balancing.

[0052] Specifically, during the process of converting the mains electricity into direct current to charge the battery module every predetermined number of times, when the SOC of the battery module reaches its upper limit battery module capacity high threshold, the energy-saving control module records the time when the SOC of the battery module reaches its upper limit battery module capacity high threshold as T 充 Calculate the time difference T between the time when the battery module SOC reaches its upper limit battery module capacity high threshold and the time when the lowest electricity price period of the day ends 余 ; Among them, T 余 =T 低结-T 充 , T 低结 Indicates the end time of the lowest electricity price period of the day; If T 余 >T 均衡min , and the battery module capacity high threshold is less than 100%, the energy-saving control module controls the conversion module to continue charging the battery module, and synchronously controls the elevator that generates regenerative power to charge the battery module until the SOC of the battery module reaches 100% or the battery module meets the second preset condition; When the battery module SOC reaches 100% or the battery module meets the second preset condition, the energy-saving control module controls the conversion module to stop operating to stop using the mains to charge the battery module, and controls the battery module to start the battery cell full-range OCV calibration and balancing until T 余 End; among them, T 均衡min The minimum time required to calibrate and equalize the OCV of all cells in the battery module; If T 余 >T 均衡min , and the battery module capacity high threshold = 100%, the energy-saving control module controls the battery module to start the battery cell full-domain OCV calibration and balancing until T 余 Finish; If T 余 ≤ T 均衡min , the energy-saving control module controls the battery module to start the full-range OCV calibration and balancing of the battery cells until T 余 Finish.

[0053] In a further embodiment, when the mains electricity is available, the battery module meets the first preset condition, and the current mains electricity price is not in the lowest electricity price period of the day, the energy-saving control module controls the conversion module not to operate, so that the battery module automatically receives the regenerative energy generated by the elevator rising or descending or does not charge or discharge with the elevator, thereby avoiding damage to the battery module due to being in a low-power state for a long time.

[0054] In a further embodiment, in the coordinated action, when the mains is powered and the battery module meets the third preset condition, the energy-saving control module controls the auxiliary power supply module so that the power input of the auxiliary power supply module is switched to the battery module, and controls the conversion module not to operate and controls the battery module to discharge to the elevator or receive the regenerative energy generated by the elevator rising or falling, or controls the conversion module to operate to invert the DC power of the battery module into AC power and transmit it to the mains; wherein the third preset condition is that the voltage V of any single cell in the battery module is ≥ the single cell undervoltage threshold V th欠 , the SOC of any single cell in the battery module ≥Single cell capacity low threshold SOC th低 , the total voltage of the battery module V B ≥Battery module low voltage threshold V BTH低And the SOC of the battery module ≥ the battery module capacity low threshold SOC Bth低 .

[0055] In this embodiment, the battery module is used as auxiliary power supply as much as possible.

[0056] In a further specific embodiment, when the mains is available, the battery module meets the third preset condition, and the current mains electricity price is not during the day's lowest electricity price period, the energy-saving control module controls the conversion module to invert the battery module's DC power into AC power and transmit it to the mains. Simultaneously, the battery module is controlled to discharge power to the elevator or receive regenerative energy generated by the elevator. This embodiment enables the elevator to draw power from the battery module during peak electricity price periods, minimizing electricity costs while simultaneously participating in peak-valley arbitrage to maximize profits and promote the rapid transition to low-carbon elevators. In this case, the conversion module is a bidirectional conversion module.

[0057] In a further specific embodiment, when the mains power is available, the battery module meets the third preset condition, and the current mains power price is in the lowest electricity price period of the day, the energy-saving control module controls the conversion module not to operate so that the battery module automatically discharges to the elevator or automatically receives the regenerated energy generated by the elevator rising or descending.

[0058] In this embodiment, the system further includes a circuit breaker, at least one contactor group, and at least one fuse group; the connection between the DC side of the conversion module and the electrode connection end of the battery module is connected to the input end of the circuit breaker, the output end of the circuit breaker is respectively connected to the input end of at least one contactor group, the output end of at least one contactor group is connected to the input end of at least one fuse group in a one-to-one correspondence, the output end of at least one fuse group is used to be connected to the connection end of at least one elevator in a one-to-one correspondence, at least one fifth electric energy sampling module is used to be connected between at least one contactor group and the corresponding elevator, and the circuit breaker and at least one contactor group are communicatively connected to the energy-saving control module.

[0059] This embodiment is configured in such a way that the circuits between the battery module and each elevator can be controlled separately, especially when there are multiple elevators.

[0060] Specifically, the circuit breaker and at least one contactor group are controlled and detected by the energy-saving control module through dry contacts.

[0061] When the elevator is operating normally, the energy-saving control module controls the circuit breaker and each contactor group to close, and obtains the elevator status information and the power information of the battery module; and controls the battery module and the contactor group to cooperate according to the elevator status information and the power information of the battery module so that the battery module can supply power to the elevator or receive the regenerative energy generated by the elevator rising or descending, or neither charge nor discharge with the elevator.

[0062] Among them, the status information of the elevator includes the number N of elevators, the rated power and real-time power of each elevator, the number R of elevators generating regenerative power, and the number S of elevators consuming power. During the cooperation process, the energy-saving control module calculates the total regenerative energy Q generated by R elevators based on the status information of the elevator. R And the total consumption energy Q of S elevators. s ; Calculate the rechargeable amount Q of the battery module based on the power information of the battery module. 充max And the dischargeable amount Q. 放max ; If Q R > Q s And Q R - Q s > Q 充max , then control the contactor group corresponding to R elevators to disconnect when the battery module receives power to Q 充max ; If Q R < Q s And Q s - Q R > Q 放max , then control the contactor group corresponding to R elevators to disconnect when the battery module discharges power to the elevator to Q 放max ; If Q R = Q s , then control the battery module not to charge or discharge with the elevator.

[0063] This embodiment can supply the total regenerative energy QR generated by R elevators to S elevators through the cooperation of the battery module and each contactor group, achieving the purpose of energy saving.

[0064] In one specific embodiment, there are 3 elevators, namely Elevator 1, 2, and 3; among them, the operating states of the 3 elevators: the operating state is that Elevator 1 is in a stopped non-operating state, the power Q1 = 0, and at the same time, Elevator 2 is in a heavy-load downward movement generating regenerative energy Q2, and Elevator 3 is in a heavy-load upward movement and requires power consumption Q3; then the energy-saving control module controls the contactor on Elevator 1 to disconnect, and does not charge or discharge Elevator 1; controls the contactors of Elevator 2 and 3 to be in a closed state; among them, the rechargeable amount of the battery module Rated capacity, Rated capacity, where SOC Bth低 Is the low threshold of the battery module capacity; When Q2 > Q3 and Q2 - Q3 > Q 充max , then the energy-saving control module controls the battery module to charge, and controls the contactor on Elevator 2 to disconnect when the power reaches Q charge max; When Q2 < Q3 and Q3 - Q2 > Q放max , the energy-saving control module controls the battery module to discharge, and when the power reaches Q 放max , then the contactor on elevator 2 is controlled to disconnect.

[0065] In another specific embodiment, when there are 3 elevators, namely elevator 1, elevator 2, and elevator 3; among them, the operating states are that elevator 1 and elevator 2 are in heavy-load downward movement and generate regenerative energies Q1 and Q2 respectively, and elevator 3 is in heavy-load upward movement and requires power consumption Q3; then the contactors of elevator 2 and elevator 3 are controlled to be in the closed state, where the rechargeable amount of the battery module rated capacity, dischargeable amount rated capacity; When Q1 + Q2 > Q3 and Q1 + Q2 - Q3 > Q 充max , the energy-saving control module monitors that the charging power of the battery module reaches Q 充max , then the contactors on elevator 1 and elevator 2 are controlled to disconnect; When Q1 + Q2 < Q3 and Q3 - (Q1 + Q2) > Q 放max , the energy-saving control module monitors that the discharging power of the battery module reaches Q 放max , then the contactors on elevator 1 and elevator 2 are controlled to disconnect.

[0066] To ensure electrical safety, when all elevators are in the maintenance state and stopped, the energy-saving control module controls the circuit breaker and each contactor group to disconnect.

[0067] In a further embodiment, when the mains power is available, if the battery module meets the third preset condition, the energy-saving control module also controls the auxiliary power supply module to switch its power input to the battery module or the mains power, and controls the battery module to maintain the working mode; if the battery module meets the first preset condition, the energy-saving control module also controls the auxiliary power supply module to switch its power input to the mains power, and controls the conversion module to act to convert the mains power into direct current and charge the battery module until the battery module meets the second preset condition, and controls the battery module to maintain the normal working mode.

[0068] Among them, the first preset condition is that the voltage V of any single cell in the battery module < the under-voltage threshold V of the single cell th欠 , the SOC of any single cell in the battery module < the low-capacity threshold SOC of the single cell th低 , the total voltage V of the battery module B is less than the low-voltage threshold V of the battery module BTH低 or the SOC of the battery module < the low-capacity threshold SOC of the battery module Bth低 ; The second preset condition is that the voltage V of any single cell in the battery module > the voltage stabilization threshold V of the single cellth稳 、The capacity SOC of any single cell in the battery module is greater than the single cell capacity threshold SOC th高 , the total voltage of the battery module V B >Battery module high voltage threshold V BTH高 Or the battery module capacity SOC> battery module capacity high threshold SOC Bth高 ; The third preset condition is that the voltage V of any single cell in the battery module is greater than or equal to the single cell undervoltage threshold V th欠 , the SOC of any single cell in the battery module ≥Single cell capacity low threshold SOC th低 , the total voltage of the battery module V B ≥Battery module low voltage threshold V BTH低 And the SOC of the battery module ≥ the battery module capacity low threshold SOC Bth低 .

[0069] In a further embodiment, when the city power is out, if the battery module meets the third preset condition, the energy-saving control module also controls the auxiliary power supply module to switch its power input to the battery module, and controls the battery module to maintain the working mode; if the battery module meets the first preset condition, the energy-saving control module also controls the auxiliary power supply module to switch its power input to the battery module, and controls the battery management system in the battery module to power off and start the system sleep mode.

[0070] In a further embodiment, after the system sleep mode is started, the energy-saving control module is also used to automatically wake up every T time to detect whether the battery module meets the second preset condition; if the battery module meets the second preset condition, the energy-saving control module controls the exit of the system sleep mode, and switches the power supply of the auxiliary power supply module to the battery module, controlling the battery module to maintain the working mode.

[0071] In a further embodiment, after starting the system sleep mode, the energy-saving control module is also used to automatically wake up every T time to detect whether the elevator resumes operation; if the elevator resumes operation, the energy-saving control module controls the exit of the system sleep mode, and controls the circuit breaker and each contactor group to be closed, and controls the battery management system of the battery module to operate normally, and controls the battery module and the contactor group to cooperate so that the battery module can supply power to the elevator or receive the regenerated energy generated by the elevator rising or descending, or neither charge nor discharge with the elevator.

[0072] In a further embodiment, during the process of controlling the battery module to maintain the working mode, the energy-saving control module is further configured to detect whether the elevator resumes operation; if the elevator resumes operation, the energy-saving control module controls the circuit breaker and each contactor group to close, and controls the battery module and the contactor group to cooperate so that the battery module supplies power to the elevator or receives the regenerative energy generated by the elevator ascending or descending or neither charges nor discharges with respect to the elevator.

[0073] With such a setting, this embodiment can ensure the electrical safety during the period when all elevators are in a faulty or fault-repair state, and can enter the normal operation state in a timely manner when the elevator resumes operation; moreover, it can avoid over-discharging of the battery.

[0074] When there are multiple elevators, in order to ensure the electrical safety during elevator faults, in this embodiment, the energy-saving control module is further configured to obtain the status of each elevator; where the status of the elevator includes working or faulty. When K of all the elevators are in a faulty state, the energy-saving control module is further configured to control the contactor group corresponding to this K elevator to open; where 1 ≤ K <N, and N is the number of elevators; when all elevators are in a faulty state, the energy-saving control module is further configured to control the circuit breaker and all contactor groups to open.

[0075] In this embodiment, the battery module includes Y battery groups connected in parallel, and each battery group includes X electric cores connected in series in sequence; Among them, the conditions that the battery module needs to meet are ; in the formula, represents the maximum capacity of the battery module, represents the power required for all elevators to operate normally during the longest historical power outage time of the local mains power; represents the power required for all elevators to operate normally during the non-lowest electricity price period of the day;<U+ Among them, ; in the formula, represents the rated capacity of each electric core; Among them, ; in the formula, represents the longest historical power outage time of the local mains power, represents the maximum power of the th elevator, N represents the number of elevators, ; Among them, represents the duration of the non-lowest electricity price period of the day.

[0076] This embodiment is configured in this way to ensure the normal and stable operation of the elevator during local power outages, avoiding affecting daily life.

[0077] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An elevator control system with a power saving calculation function, characterized in that: include: Battery module, conversion module, auxiliary power supply module and energy-saving control module; The input end of the auxiliary power supply module is connected to the mains and the battery module respectively, and the output end of the auxiliary power supply module is connected to the energy-saving control module and the conversion module respectively. The AC side of the conversion module is used to connect to the mains, and the DC side of the conversion module is connected to the battery module; the connection between the DC side of the conversion module and the battery module is connected to at least one elevator respectively; A third power sampling module is connected between the connection between the DC side of the conversion module and the battery module and the battery module, at least one fifth power sampling module is connected between the connection between the DC side of the conversion module and the battery module and at least one elevator, and a fourth power sampling module is connected between each elevator and the mains; A first power sampling module is connected between the auxiliary power supply module and the mains, and a second power sampling module is connected between the conversion module and the mains; The energy-saving control module is respectively connected to the first power sampling module, the second power sampling module, the third power sampling module, the fourth power sampling module, the fifth power sampling module, the battery module, the conversion module and the auxiliary power supply module; The energy-saving control module is used to obtain the mains power information and the power information of the battery module, and control the coordinated actions of the battery module, the conversion module and the auxiliary power supply module according to the mains power information and the power information of the battery module to achieve energy-saving power consumption of at least one elevator, and calculate the total power saved based on the power consumption information collected by the first power sampling module, the second power sampling module, the third power sampling module, the fourth power sampling module and the fifth power sampling module.

2. The elevator control system with power saving calculation function according to claim 1, characterized in that: The battery module is used to power the auxiliary power supply module and the elevator; the conversion module is used to convert the mains power into direct current and charge the battery module; alternatively, the conversion module is used to convert the mains power into direct current and charge the battery module, and convert the direct current of the battery module into alternating current and transmit it to the mains; the auxiliary power supply module is used to power the energy-saving control module and the conversion module, and the auxiliary power supply module is also used to control its power input to switch between the mains power and the battery module; The first power sampling module is used to obtain first power usage information of the mains supplying power to the auxiliary power supply module; the second power sampling module is used to obtain second power usage information of the mains supplying power to the conversion module; the third power sampling module is used to obtain third power usage information of the battery module discharging or fourth power usage information of the battery module charging; the fourth power sampling module is used to obtain fifth power usage information of the mains supplying power to each elevator; The fifth power sampling module is used to obtain sixth power usage information of the battery module supplying power to each elevator or seventh power usage information of each elevator discharging power to the battery module; wherein each power usage information includes power quantity; The energy-saving control module is used to calculate the total amount of electricity saved based on the first electricity usage information, the second electricity usage information, the third electricity usage information, the fourth electricity usage information, the fifth electricity usage information, the sixth electricity usage information and the seventh electricity usage information.

3. The elevator control system with power saving calculation function according to claim 2, characterized in that: The total power saved is ; Where, Indicates the total power. Indicates the amount of electricity in the first electricity usage information, The amount of electricity in the second electricity usage information, Indicates the amount of electricity in the third electricity usage information. Indicates the amount of electricity in the fourth electricity usage information, represents the power in the fifth power consumption information, N is the number of elevators, , , Indicates the power amount in the sixth power usage information.

4. The elevator control system with power saving calculation function according to claim 1, characterized in that: When the mains power is cut off, the auxiliary power supply module switches its power input to the battery module; the energy-saving control module controls the conversion module not to operate, and controls the battery module to supply power to the elevator or receive the regenerative energy generated by the elevator rising or descending, or to neither charge nor discharge with the elevator.

5. The elevator control system with power saving calculation function according to claim 4, characterized in that: Each power usage information also includes current, frequency and power; when the first power usage information, the second power usage information and the fifth power usage information all meet the power outage preset conditions, the current mains power is in a power outage state; Among them, the preset conditions for power outage are current < mains stable current threshold and duration > mains stable duration threshold, voltage < mains stable voltage threshold and duration > mains stable duration threshold, frequency < mains stable frequency threshold and duration > mains stable duration threshold, or power < mains stable power threshold and duration > mains stable duration threshold.

6. The elevator control system with power saving calculation function according to claim 1, characterized in that: When the mains has power and the battery module meets the third preset condition, the energy-saving control module controls the auxiliary power supply module so that the power input of the auxiliary power supply module is the battery module, and controls the conversion module not to operate and controls the battery module to discharge to the elevator or receive the regenerative energy generated by the elevator rising or descending or not charge or discharge with the elevator, or controls the conversion module to operate to invert the DC power of the battery module into AC power and transmit it to the mains; wherein, the third preset condition is that the voltage of any single cell in the battery module ≥ the single cell undervoltage threshold, the SOC of any single cell in the battery module ≥ the single cell capacity low threshold, the total voltage of the battery module ≥ the battery module low voltage threshold and the SOC of the battery module ≥ the battery module capacity low threshold.

7. The elevator control system with power saving calculation function according to claim 1, characterized in that: When the mains is powered and the battery module meets the first preset condition, the energy-saving control module controls the auxiliary power supply module to switch its power input from the mains, and controls the conversion module to convert the mains into direct current to charge the battery module, and controls the battery module to supply power to the elevator or receive regenerative energy generated by the elevator rising or descending, or to neither charge nor discharge with the elevator; wherein the first preset condition is that the voltage of any single cell in the battery module is less than the single cell undervoltage threshold, the SOC of any single cell in the battery module is less than the single cell capacity low threshold, the total voltage of the battery module is less than the battery module low voltage threshold, or the SOC of the battery module is less than the battery module capacity low threshold; During the process of converting AC power into DC power to charge the battery module, when the battery module meets the second preset condition, the energy-saving control module controls the auxiliary power supply module to operate so as to switch the power input of the auxiliary power supply module to the battery module, and controls the conversion module not to operate and controls the battery module to supply power to the elevator or receive the regenerative energy generated by the elevator rising or descending or not to charge or discharge with the elevator; wherein the second preset condition is that the total voltage of the battery module is greater than the high voltage threshold of the battery module, the SOC of the battery module is greater than the high capacity threshold of the battery module, the voltage of any single cell in the battery module is greater than the high voltage threshold of the single cell, or the SOC of any single cell in the battery module is greater than the high capacity threshold of the single cell.

8. The elevator control system with power saving calculation function according to claim 7, characterized in that: During the process of converting the mains electricity into direct current to charge the battery module every predetermined number of times, the energy-saving control module also controls the battery module to perform global OCV calibration and balancing.

9. The elevator control system with power saving calculation function according to claim 8, characterized in that: During the process of converting the mains electricity into DC electricity to charge the battery module every predetermined number of times, when the SOC of the battery module reaches the high threshold of the battery module capacity, the energy-saving control module records the time when the SOC of the battery module reaches the high threshold of the battery module capacity as T 充 ; Calculate T 充 The time difference T between the time when the lowest electricity price period ends and the time when the lowest electricity price period ends 余 ; Among them, T 余 =T 低结 -T 充 , T 低结 Indicates the end time of the lowest electricity price period of the day; If T 余 > T 均衡min , and the battery module capacity high threshold is < 100%, the energy-saving control module controls the conversion module to continue charging the battery module, and synchronously controls the elevator that generates regenerative power to charge the battery module until the SOC of the battery module reaches 100% or the battery module meets the second preset condition; wherein, T 均衡min The minimum time required to calibrate and equalize the OCV of all cells in the battery module; When the battery module SOC reaches 100% or the battery module meets the second preset condition, the energy-saving control module controls the conversion module to stop operating to stop using the mains to charge the battery module, and controls the battery module to start the battery cell full-range OCV calibration and balancing until T 余 Finish; If T 余 > T 均衡min , and the battery module capacity high threshold = 100%, the energy-saving control module controls the battery module to start the battery cell full-domain OCV calibration and balancing until T 余 Finish; If T 余 ≤ T 均衡min , the energy-saving control module controls the battery module to start the full-range OCV calibration and balancing of the battery cells until T 余 Finish.

10. The elevator control system with power saving calculation function according to any one of claims 1 to 9, characterized in that: Also included are a circuit breaker, at least one contactor set, and at least one fuse set; The connection between the DC side of the conversion module and the electrode connection end of the battery module is connected to the input end of the circuit breaker, the output end of the circuit breaker is respectively connected to the input end of at least one contactor group, the output end of at least one contactor group is connected one-to-one with the input end of at least one fuse group, the output end of at least one fuse group is used to be connected one-to-one with the connection end of at least one elevator, at least one fifth electric energy sampling module is used to be connected between at least one contactor group and the corresponding elevator, the circuit breaker and at least one contactor group are electrically connected to the auxiliary power supply module and are both communicatively connected to the energy-saving control module.

11. The elevator control system with power saving calculation function according to claim 10, characterized in that: When the elevator is operating normally, the energy-saving control module controls the circuit breaker and each contactor group to close, and obtains the elevator status information and the power information of the battery module; and controls the battery module and the contactor group to cooperate according to the elevator status information and the power information of the battery module so that the battery module can supply power to the elevator or receive the regenerative energy generated by the elevator rising or descending, or neither charge nor discharge with the elevator.

12. The elevator control system with power saving calculation function according to claim 11, characterized in that: The elevator status information includes the number of elevators N, the rated power and real-time power of each elevator, the number of elevators generating regenerative power R, and the number of elevators consuming power S; During the coordination process, the energy-saving control module calculates the total regenerative energy Q generated by R elevators based on the elevator status information. R And the total energy consumption Q of S elevators s ; Calculate the rechargeable capacity Q of the battery module based on the power information of the battery module 充max and discharge capacity Q 放max ; If Q R > Q s And Q R -Q s > Q 充max , then the control battery module receives the power to Q 充max When the contactor group corresponding to the R elevator is controlled to be disconnected; If Q R < Q s And Q s -Q R >Q 放max , then the control battery module discharges to the elevator to Q 放max When the contactor group corresponding to the R elevator is controlled to be disconnected; If Q R = Q s , then the control battery module and the elevator will not charge or discharge.

13. The elevator control system with power saving calculation function according to claim 10, characterized in that: When all elevators are in maintenance status and stop running, the energy-saving control module controls the circuit breaker and each contactor group to be disconnected.

14. The elevator control system with power saving calculation function according to claim 13, characterized in that: When the mains is available, if the battery module meets the third preset condition, the energy-saving control module further controls the auxiliary power supply module to switch its power input to the battery module or the mains, and controls the battery module to maintain the working mode; if the battery module meets the first preset condition, the energy-saving control module further controls the auxiliary power supply module to switch its power input to the mains, and controls the conversion module to convert the mains into direct current and charge the battery module until the battery module meets the second preset condition, and controls the battery module to maintain the normal working mode; Among them, the third preset condition is that the voltage of any single cell in the battery module is ≥ the single cell undervoltage threshold, the SOC of any single cell in the battery module is ≥ the single cell capacity low threshold, the total voltage of the battery module is ≥ the battery module low voltage threshold, and the SOC of the battery module is ≥ the battery module capacity low threshold; The first preset condition is that the voltage of any single cell in the battery module is less than the single cell undervoltage threshold, the SOC of any single cell in the battery module is less than the single cell capacity low threshold, the total voltage of the battery module is less than the battery module low voltage threshold, or the SOC of the battery module is less than the battery module capacity low threshold; Among them, the second preset condition is that the voltage of any single cell in the battery module is greater than the single cell voltage regulation threshold, the SOC of any single cell in the battery module is greater than the single cell capacity threshold, the total voltage of the battery module is greater than the battery module high voltage threshold or the SOC of the battery module is greater than the battery module capacity high threshold.

15. The elevator control system with power saving calculation function according to claim 13, characterized in that: When the utility power is cut off, if the battery module meets the third preset condition, the energy-saving control module further controls the auxiliary power supply module to switch its power input to the battery module and controls the battery module to maintain the working mode; if the battery module meets the first preset condition, the energy-saving control module further controls the auxiliary power supply module to switch its power input to the battery module and controls the battery management system in the battery module to power off and start the system sleep mode; Among them, the third preset condition is that the voltage of any single cell in the battery module is ≥ the single cell undervoltage threshold, the SOC of any single cell in the battery module is ≥ the single cell capacity low threshold, the total voltage of the battery module is ≥ the battery module low voltage threshold, and the SOC of the battery module is ≥ the battery module capacity low threshold; Among them, the first preset condition is that the voltage of any single cell in the battery module is less than the single cell undervoltage threshold, the SOC of any single cell in the battery module is less than the single cell capacity low threshold, the total voltage of the battery module is less than the battery module low voltage threshold or the SOC of the battery module is less than the battery module capacity low threshold.

16. The elevator control system with power saving calculation function according to claim 15, characterized in that: After the system sleep mode is activated, the energy-saving control module automatically wakes up every T time to detect whether the battery module meets the second preset condition; if the battery module meets the second preset condition, the energy-saving control module controls the system to exit the sleep mode and switches the power supply of the auxiliary power supply module to the battery module, controlling the battery module to maintain the working mode; Among them, the second preset condition is that the voltage of any single cell in the battery module is greater than the single cell voltage regulation threshold, the SOC of any single cell in the battery module is greater than the single cell capacity threshold, the total voltage of the battery module is greater than the battery module high voltage threshold or the SOC of the battery module is greater than the battery module capacity high threshold.

17. The elevator control system with power saving calculation function according to claim 15, characterized in that: After starting the system sleep mode, the energy-saving control module automatically wakes up every T time to detect whether the elevator resumes operation; if the elevator resumes operation, the energy-saving control module controls the exit of the system sleep mode, controls the circuit breaker and each contactor group to be closed, and controls the battery management system of the battery module to operate normally, controls the battery module and the contactor group to cooperate so that the battery module can supply power to the elevator or receive the regenerative energy generated by the elevator rising or descending, or does not charge or discharge with the elevator.

18. The elevator control system with power saving calculation function according to any one of claims 14 to 17, characterized in that: While controlling the battery module to maintain the working mode, the energy-saving control module also detects whether the elevator resumes operation; if the elevator resumes operation, the energy-saving control module controls the circuit breaker and each contactor group to be closed, and controls the battery module and the contactor group to cooperate so that the battery module can supply power to the elevator or receive the regenerative energy generated by the elevator rising or descending, or not charge or discharge with the elevator.

19. The elevator control system with power saving calculation function according to claim 1, characterized in that: The battery module includes parallel connected Y Each battery pack includes a battery connected in series X cells; Among them, the conditions that the battery module needs to meet are Where, Indicates the maximum capacity of the battery module, Indicates the amount of electricity required for the normal operation of all elevators during the longest historical power outage of the local utility power supply; Indicates the amount of electricity required for normal operation of all elevators during the non-lowest electricity price period of the day; in, Where, Indicates the rated capacity of each battery cell; in, Where, Indicates the longest historical power outage time of the local city power supply. Indicates the The maximum power of the elevator, N represents the number of elevators, ; in, Where, Indicates the duration of the non-lowest electricity price period on the day.

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