An elevator control system having a power saving amount calculation function

Abstract

The application discloses an elevator control system with power saving amount calculation function, and relates to the field of elevator control, which comprises an energy-saving control module, a first, a second, a third, a fourth and a fifth electric energy sampling module, a battery module, a conversion module and an auxiliary power supply module which are in communication connection with the energy-saving control module; the commercial power and the battery module are used for supplying power for the auxiliary power supply module, the auxiliary power supply module supplies power for the energy-saving control module and the conversion module respectively, the AC side of the conversion module is connected with the second electric energy sampling module connected with the commercial power, and the DC side of the conversion module is connected with the battery module; the third electric energy sampling module is arranged between the connection of the conversion module and the battery module and the battery module, the fifth electric energy sampling module is arranged between the connection 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 commercial power; the first electric energy sampling module is arranged between the auxiliary power supply module and the commercial power. The application can calculate the total power saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of elevator control systems, and particularly relates to an elevator control system with power saving amount calculation function. BACKGROUND

[0002] At present, the energy source of the elevator is mainly the commercial power. When the commercial power is off, the elevator cannot run. Although part of the elevators are equipped with battery modules, the battery modules have limited power and cannot make the elevator run stably for a long time, which affects the daily work and life. At the same time, when the elevator drive main circuit is driven, regenerative energy is generated, but the common processing method is to consume through a consumption resistor, so there is a lot of energy waste.

[0003] Part of the current elevator energy-saving control systems recycle the energy generated by the elevator drive into the battery module, but cannot accurately calculate the power saved after the installation of the elevator energy-saving control system, so the investment and benefit situation of the elevator energy-saving control system cannot be accurately calculated, which affects the long-term development plan of the elevator energy-saving control system. SUMMARY

[0004] To solve the technical problems in the background art, the present application provides an elevator control system with power saving amount calculation function.

[0005] The elevator control system with power saving amount calculation function provided by the present application comprises a battery module, a conversion module, an auxiliary power supply module and an energy-saving control module.

[0006] The electrode connecting end of the battery module is connected with a third electric energy sampling module, the third electric energy sampling module is connected with at least one fifth electric energy sampling module, the at least one fifth electric energy sampling module is connected with the connecting end of at least one elevator in one-to-one correspondence, and each elevator is connected with a fourth electric energy sampling module between the connecting end and the commercial power.

[0007] The input end of the auxiliary power supply module is connected with the commercial power and the electrode connecting end of the battery module respectively, the output end of the auxiliary power supply module is connected with the power supply end of the energy-saving control module and the power supply end of the conversion module respectively, the alternating current side of the conversion module is used for connecting the commercial power, the alternating current side of the conversion module is connected with the commercial power and has a second electric energy sampling module therebetween, and the direct current side of the conversion module is connected with the electrode connecting end of the battery module; the auxiliary power supply module is connected with the first electric energy sampling module between the commercial power, and the conversion module is connected with the second electric energy sampling module between the commercial power.

[0008] The energy-saving control module is communicatively connected with the first electric energy sampling module, the second electric energy sampling module, the third electric energy sampling module, the fourth electric energy sampling module and the fifth electric energy sampling module, the battery module, the conversion module and the auxiliary power supply module respectively.

[0009] Preferably, the battery module is used to supply power for the auxiliary power module and the elevator; the conversion module is used to convert the commercial power into direct current and charge the battery module; the auxiliary power module is used to supply power for the energy-saving control module and the conversion module, and the auxiliary power module is also used to control the switching of the power input thereof between the commercial power and the battery module.

[0010] The first electric energy sampling module is used to acquire the first power consumption information of the commercial power supplied to the auxiliary power module; the second electric energy sampling module is used to acquire the second power consumption information of the commercial power supplied to the conversion module; the third electric energy sampling module is used to acquire the third power consumption information of the discharge of the battery module or the fourth power consumption information of the charge of the battery module; the fourth electric energy sampling module is used to acquire the fifth power consumption information of the commercial power supplied to each elevator; and the fifth electric energy sampling module is used to acquire the sixth power consumption information of the battery module supplied to each elevator or the seventh power consumption information of each elevator discharged to the battery module.

[0011] The energy-saving control module is used to acquire the commercial power information, the power information of the battery module, the first power consumption information, the second power consumption information, the third power consumption information, the fourth power consumption information and the fifth power consumption information, and according to the commercial power information and the power information of the battery module, control the coordinated action of the battery module, the conversion module and the auxiliary power module to realize the energy-saving power consumption of at least one elevator, and according to 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, calculate the total power saved.

[0012] Preferably, the total power saved is ;

[0013] In the formula, represents the total power, represents the first power consumption information, the second power consumption information, represents the third power consumption information, represents the fourth power consumption information , represents the fifth power consumption information, and N is the number of elevators, , , represents the sixth power consumption information, represents the seventh power consumption information.

[0014] Preferably, when the commercial power is powered off, the auxiliary power module switches the power input thereof to the battery module; and controls the conversion module to be inactivated, and controls the battery module to supply power to the elevator or receive the regenerated energy generated by the ascending or descending of the elevator or not charge or discharge with the elevator.

[0015] Preferably, each power consumption information further comprises current, frequency and power; when the first power consumption information, the second power consumption information and the fifth power consumption information all satisfy the power-off preset condition, the current commercial power is in a power-off state;

[0016] wherein the power-off preset condition is current < commercial power stable current threshold and duration > commercial power stable duration threshold, voltage < commercial power stable voltage threshold and duration > commercial power stable duration threshold, frequency < commercial power stable frequency threshold and duration > commercial power stable duration threshold, power < commercial power stable power threshold and duration > commercial power stable duration threshold

[0017] Preferably, when the commercial power is on, the energy-saving control module is configured to control the auxiliary power supply module to act, so that the auxiliary power supply module switches its power input from the commercial power or from the commercial power to the battery module.

[0018] Preferably, when the commercial power is on and the battery module satisfies the first preset condition, the energy-saving control module controls the auxiliary power supply module to act, so that the auxiliary power supply module switches its power input from the commercial power, controls the conversion module to act to convert the commercial power 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 ascending or descending or not charge or discharge with the elevator; wherein the first preset condition is that the voltage of any single cell in the battery module < single cell under-voltage threshold, the SOC of any single cell in the battery module < single cell capacity low threshold SOC, the total voltage of the battery module < battery module low voltage threshold or the SOC of the battery module < battery module capacity low threshold. < single cell capacity low threshold SOC th低 < single cell capacity low threshold SOC

[0019] Preferably, during the process of converting the commercial power into direct current to charge the battery module, when the battery module satisfies the second preset condition, the energy-saving control module controls the auxiliary power supply module to act, so that the auxiliary power supply module switches its power input to the battery module, controls the conversion module to not act to stop charging the battery module with the commercial power, and simultaneously controls the battery module to automatically discharge to the elevator or automatically receive the regenerative energy generated by the elevator ascending or descending or not charge or discharge with the elevator; wherein the second preset condition is that the total voltage of the battery module > battery module high voltage threshold, the SOC of the battery module > battery module capacity high threshold, the voltage of any single cell in the battery module > single cell high voltage threshold or the SOC of any single cell in the battery module > single cell capacity high threshold.

[0020] Preferably, when the commercial power is on, the battery module satisfies the first preset condition, and the current commercial power price is in the daily lowest power price time period, the energy-saving control module controls the conversion module to act to convert the commercial power into direct current to charge the battery module, and simultaneously the battery module automatically receives the regenerative energy generated by the elevator ascending or descending.

[0021] Preferably, the energy-saving control module further controls the battery module to perform the full-range OCV calibration equalization during the charging of the battery module by the AC power converted into DC power every predetermined number of times.

[0022] Preferably, when the SOC of the battery module reaches the high capacity threshold of the battery module during the charging of the battery module by the AC power converted into DC power every predetermined number of times, the energy-saving control module records the time when the SOC of the battery module reaches the high capacity threshold of the battery module as T 充 , calculates a time difference T 余 between the time when the SOC of the battery module reaches the high capacity threshold of the battery module and the time when the low electricity price time period ends on the same day, and controls the battery module to perform the full-range OCV calibration equalization during the charging of the battery module by the AC power converted into DC power every predetermined number of times. 余 =T 低结 -T 充 , T 低结 represents the time when the low electricity price time period ends.

[0023] If T 余 >T 均衡min , and the high capacity threshold of the battery module < 100%, the energy-saving control module controls the conversion module to continue charging the battery module, and controls the elevator generating the regenerative power to charge the battery module until the SOC of the battery module reaches 100% or the battery module satisfies the second preset condition.

[0024] When the SOC of the battery module reaches 100% or the battery module satisfies the second preset condition, the energy-saving control module controls the conversion module to be inactivated to stop charging the battery module by the AC power, and controls the battery module to start the full-range OCV calibration equalization of the battery cells until T 余 ends; wherein, T 均衡min is the shortest time required for the full-range OCV calibration equalization of the battery cells of the battery module.

[0025] If T 余 > T 均衡min , and the high capacity threshold of the battery module = 100%, the energy-saving control module controls the battery module to start the full-range OCV calibration equalization of the battery cells until T 余 ends.

[0026] If T 余 ≤ T 均衡min , the energy-saving control module controls the battery module to start the full-range OCV calibration equalization of the battery cells until T 余 ends.

[0027] Preferably, when the mains is powered, the battery module meets the third preset condition, the energy-saving control module controls the auxiliary power supply module to switch the power input of the auxiliary power supply module to the battery module, controls the conversion module to be inactivated, and controls the battery module to automatically discharge to the elevator, or automatically receive the regenerative energy generated by the elevator ascending or descending, or not charge or discharge with the elevator, or controls the conversion module to be activated to convert the direct current of the battery module into alternating current and transmit to the mains; wherein the third preset condition is that the voltage of any single cell in the battery module is greater than or equal to the single cell undervoltage threshold, the SOC of any single cell in the battery module is greater than or equal to the single cell capacity low threshold SOC, the total voltage of the battery module is greater than or equal to the battery module low voltage threshold, and the SOC of the battery module is greater than or equal to the battery module capacity low threshold. th低 R s 充max 放max

[0028] Preferably, the circuit breaker, at least one contactor group and at least one fuse group are further included; the connection between the direct current side of the conversion module and the electrode connection end of the battery module is connected with the input end of the circuit breaker, the output end of the circuit breaker is connected with the input end of at least one contactor group respectively, the output end of at least one contactor group is connected with the input end of at least one fuse group one by one, the output end of at least one fuse group is used to be connected with the connection end of at least one elevator one by one, 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 with the auxiliary power supply module and are communicatively connected with the energy-saving control module.

[0029] Preferably, during normal operation of the elevator, the energy-saving control module controls the circuit breaker and each contactor group to be closed, and obtains the state information of the elevator and the power information of the battery module; and controls the battery module and the contactor group to cooperate to make the battery module supply power to the elevator or receive the regenerative energy generated by the elevator ascending or descending or not charge or discharge with the elevator according to the state information of the elevator and the power information of the battery module.

[0030] Preferably, the state information of the elevator includes the number N of elevators, the rated power and real-time power of each elevator, and the number R of elevators generating regenerative power and the number S of elevators being powered;

[0031] During the cooperation process, the energy-saving control module calculates the total regenerative energy Q R generated by R elevators and the total consumption energy Q s of S elevators according to the state information of the elevator; calculates the chargeable amount Q 充max and the dischargeable amount Q 放max of the battery module according to the power information of the battery module.

[0032] If Q R > Q s and Q R -Qs Q 充max Then, the control battery module receives power to Q. 充max The contactor group corresponding to the elevator in section R is disconnected at that time.

[0033] 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 The contactor group corresponding to the elevator in section R is disconnected at that time.

[0034] If Q R = Q s Then, the battery module will not be charged or discharged between itself and the elevator.

[0035] Preferably, when all elevators are under maintenance and stopped, the energy-saving control module controls the circuit breaker and each contactor group to disconnect.

[0036] Preferably, when there is mains power, 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 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 mains power, and controls the conversion module to convert the mains power into DC power 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.

[0037] The third preset condition is that the voltage of any single cell in the battery module is greater than or equal to the undervoltage threshold of the single cell, and the SOC of any single cell in the battery module is also greater than or equal to the SOC of the single cell. ≥ Low threshold of single cell capacity, total voltage of battery module ≥ low voltage threshold of battery module and SOC of battery module ≥ low threshold of battery module capacity;

[0038] The first preset condition is that the voltage of any single cell in the battery module is less than the undervoltage threshold of the single cell and the state of charge (SOC) of any single cell in the battery module. < Low threshold for single cell capacity, total voltage of battery module < low threshold for battery module voltage, or SOC of battery module < low threshold for battery module capacity;

[0039] 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 high voltage threshold of the battery module, or the SOC of the battery module is greater than the high capacity threshold of the battery module.

[0040] ​Preferably, when the mains power fails, 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 shut down and start the system hibernation mode.

[0041] The third preset condition is that the voltage of any single cell in the battery module is greater than or equal to the undervoltage threshold of the single cell, and the SOC of any single cell in the battery module is also greater than or equal to the SOC of the single cell. ≥ Low threshold of single cell capacity, total voltage of battery module ≥ low voltage threshold of battery module and SOC of battery module ≥ low threshold of battery module capacity;

[0042] The first preset condition is that the voltage of any single cell in the battery module is less than the undervoltage threshold of the single cell and the state of charge (SOC) of any single cell in the battery module. < Low threshold for single cell capacity, total voltage of battery module < low voltage threshold for battery module, or SOC of battery module < low capacity threshold for battery module.

[0043] Preferably, when the system hibernation 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 hibernation mode and switches the power supply of the auxiliary power supply module to the battery module, and controls the battery module to maintain the working mode.

[0044] 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 high voltage threshold of the battery module, or the SOC of the battery module is greater than the high capacity threshold of the battery module.

[0045] Preferably, after the system hibernation mode is activated, the energy-saving control module is also used to automatically wake up every T time interval to detect whether the elevator has resumed operation; if the elevator resumes operation, the energy-saving control module controls the exit of the system hibernation mode, controls the circuit breaker and each contactor group to close, controls the battery management system of the battery module to operate normally, and controls the battery module and contactor group to cooperate so that the battery module supplies power to the elevator or receives regenerative energy generated by the elevator rising or falling, or neither charges nor discharges with the elevator.

[0046] Preferably, during the process of controlling the battery module to keep 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 be closed, and controls the battery module and the contactor group to cooperate to supply power to the elevator or receive regenerative energy generated by the elevator ascending or descending or to charge or discharge with the elevator.

[0047] Preferably, the battery module comprises a plurality of battery groups connected in parallel, each battery group comprises a plurality of battery cells connected in series. Y X Preferably, the battery module comprises a plurality of battery groups connected in parallel, each battery group comprises a plurality of battery cells connected in series.

[0048] Preferably, the battery module needs to satisfy the condition that ; in the formula, represents the maximum capacity of the battery module, represents the power required for normal operation of all elevators when the local power supply historically stops for the longest time; represents the power required for normal operation of all elevators during non-minimum electricity price time period of the day;

[0049] Preferably, the battery module needs to satisfy the condition that ; in the formula, represents the rated capacity of each battery cell;

[0050] Preferably, the battery module needs to satisfy the condition that ; in the formula, represents the longest time of historical power outage of the local power supply, represents the maximum power of the i-th elevator, and N represents the number of elevators, ;

[0051] Preferably, the battery module needs to satisfy the condition that ; in the formula, represents the length of the non-minimum electricity price time period of the day.

[0052] In specific implementation, the battery module is configured to supply power to the auxiliary power supply module and the elevator; the conversion module is configured to convert the power supply into direct current and charge the battery module; the auxiliary power supply module is configured to supply power to the energy-saving control module and the conversion module, and the auxiliary power supply module is further configured to control the power input thereof to switch between the power supply and the battery module; the first electric energy sampling module is configured to acquire first power consumption information of the power supply supplying power to the auxiliary power supply module; the second electric energy sampling module is configured to acquire second power consumption information of the power supply supplying power to the conversion module; the third electric energy sampling module is configured to acquire third power consumption information of the battery module discharging or fourth power consumption information of the battery module charging; the fourth electric energy sampling module is configured to acquire fifth power consumption information of the power supply supplying power to each elevator; and the fifth electric energy sampling module is configured to acquire sixth power consumption information of the battery module supplying power to each elevator or seventh power consumption information of each elevator discharging to the battery module.

[0053] ​​The energy-saving control module is used to acquire mains power information, battery module power information, first power consumption information, second power consumption information, third power consumption information, fourth power consumption information, and fifth power consumption information. Based on the mains power information and battery module power information, it controls the coordinated operation of the battery module, conversion module, and auxiliary power supply module to achieve energy-saving power consumption for at least one elevator. Based on the first, second, third, fourth, fifth, sixth, and seventh power consumption information, it calculates the total power saving.

[0054] The elevator control system with energy-saving calculation function proposed in this invention provides power to the conversion module and energy-saving control module throughout their entire life cycle via an auxiliary power supply module. This effectively prevents the elevator energy-saving control system from failing to operate during mains power outages. Furthermore, the energy-saving control module simultaneously acquires mains power information and battery module power information, and controls the coordinated operation of the battery module, conversion module, and auxiliary power supply module based on this information to achieve energy-saving power consumption for at least one elevator. This ensures that the battery module and elevator can mutually charge and discharge, and each elevator can draw power from both mains power and the battery module. The elevator's regenerative energy can also recharge the battery module, effectively improving the economic efficiency of elevator power consumption and reducing electricity costs. Moreover, this invention can calculate the total energy savings based on the first, second, third, fourth, fifth, sixth, and seventh energy consumption information, facilitating subsequent calculations of investment returns based on the total energy savings. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of the structure of an elevator control system with energy saving calculation function in one embodiment of the present invention. Detailed Implementation

[0056] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0057] like Figure 1 As shown, the present invention proposes an elevator control system with energy saving calculation function, comprising: a battery module, a conversion module, an auxiliary power supply module, and an energy saving control module;

[0058] The input end of the auxiliary power supply module is connected with the electrode connection end of the commercial power and the battery module respectively, the output end of the auxiliary power supply module is connected with the power supply end of the energy-saving control module and the power supply end of the conversion module respectively, the alternating current side of the conversion module is used for connecting the commercial power, the alternating current side of the conversion module is connected with the commercial power and has the second electric energy sampling module connected therebetween, and the direct current side of the conversion module is connected with the electrode connection end of the battery module; the first electric energy sampling module is connected between the auxiliary power supply module and the commercial power, and the second electric energy sampling module is connected between the conversion module and the commercial power;

[0059] The energy-saving control module is communicatively connected with the first electric energy sampling module, the second electric energy sampling module, the third electric energy sampling module, the fourth electric energy sampling module, the fifth electric energy sampling module, the battery module, the conversion module and the auxiliary power supply module.

[0060] In specific implementation, the battery module is used for supplying power for the auxiliary power supply module and the elevator; the conversion module is used for converting the commercial power into direct current and charging the battery module; the auxiliary power supply module is used for supplying power for the energy-saving control module and the conversion module, and the auxiliary power supply module is also used for controlling the power input thereof to be switched between the commercial power and the battery module; the first electric energy sampling module is used for obtaining the first power consumption information of the commercial power to the auxiliary power supply module; the second electric energy sampling module is used for obtaining the second power consumption information of the commercial power to the conversion module; the third electric energy sampling module is used for obtaining the third power consumption information of the battery module discharging or the fourth power consumption information of the battery module charging; the fourth electric energy sampling module is used for obtaining the fifth power consumption information of the commercial power to each elevator; and the fifth electric energy sampling module is used for obtaining the sixth power consumption information of the battery module to each elevator or the seventh power consumption information of each elevator discharging to the battery module.

[0061] The energy-saving control module is used for obtaining the commercial power information, the power information of the battery module, the first power consumption information, the second power consumption information, the third power consumption information, the fourth power consumption information and the fifth power consumption information, and controlling the battery module, the conversion module and the auxiliary power supply module to coordinate and act according to the commercial power information and the power information of the battery module, so as to realize the energy-saving power consumption of at least one elevator, and calculating the total power saved according to 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.

[0062] The application can effectively prevent the problem that the elevator energy-saving control system cannot run when the commercial power is off by assisting the power supply module to supply power for the conversion module and the energy-saving control module in the whole life cycle operation process; and at the same time, the energy-saving control module obtains the commercial 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 to realize the energy-saving power consumption of at least one elevator according to the commercial power information and the power information of the battery module, so as to ensure that the battery module and the elevator can charge and discharge each other, and each elevator can take power from the commercial power and the battery module, the regenerative energy of the elevator drive can be reversely charged to the battery module, thereby effectively improving the economy of the elevator power consumption and reducing the power consumption cost. Moreover, the application can calculate the total saved power according to 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, so as to facilitate the subsequent calculation of investment income according to the total saved power.

[0063] Specifically, the energy-saving control module and the battery module in the embodiment are connected through CAN or daisy chain communication; the energy-saving control module and the conversion module are connected through CAN or RS485 or Ethernet port communication, which can be controlled and detected through dry contact points; the energy-saving control module and the auxiliary power supply module are also connected through dry contact point control and detection, and can also be connected through CAN or RS485 or Ethernet port communication.

[0064] The total saved power is ;

[0065] In the formula, total power, 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, N is the number of elevators, , , the sixth power consumption information, the seventh power consumption information.

[0066] In this way, the embodiment can calculate the total saved power, which facilitates the subsequent calculation of investment income according to the total saved power.

[0067] In one of the embodiments, PA is the sampling position of the first electric energy sampling module, PB is the sampling position of the second electric energy sampling module, PE is the sampling position of the third electric energy sampling module, PC1~PCN are the sampling positions of the fourth electric energy sampling module, and P1~PN are the sampling positions of the fifth electric energy sampling module.

[0068] In one embodiment, in the coordination action, when the commercial power is off, the auxiliary power supply module switches its power input to the battery module; controls the conversion module to be inactivated, and controls the battery module and the contactor group to cooperate to supply power to the elevator by the battery module or receive the regenerative energy generated by the elevator ascending or descending or not charge or discharge with the elevator.

[0069] In this embodiment, the battery module can supply power to the elevator and the elevator control system when the power is off, thereby ensuring the stable operation of the elevator and the elevator control system.

[0070] If the elevator is connected with other standby power sources in addition to the commercial power and the battery module in the elevator energy-saving control system, the elevator always operates normally when the commercial power is 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 is controlled to operate normally, so that the battery module supplies power to the elevator or receives the regenerative energy generated by the elevator ascending or descending or not charges or discharges with the elevator.

[0071] In a further embodiment, the power consumption information further includes current, frequency and power; when the first power consumption information, the second power consumption information and the fifth power consumption information all satisfy the power-off preset condition, the current commercial power is in a power-off state;

[0072] The power-off preset condition is that the current < commercial power stable current threshold and the duration > commercial power stable duration threshold, the voltage < commercial power stable voltage threshold and the duration > commercial power stable duration threshold, the frequency < commercial power stable frequency threshold and the duration > commercial power stable duration threshold, or the power < commercial power stable power threshold and the duration > commercial power stable duration threshold.

[0073] Specifically, the first power consumption information includes a first current I1, a first voltage V1 and a first power P1 supplied by the commercial power to the auxiliary power supply module. When the first power consumption information satisfies I1 < commercial power stable current threshold I th and the duration t > commercial power stable duration threshold T 市电th , V1 < commercial power stable voltage threshold V th and the duration t > commercial power stable duration threshold T 市电th , f1 < commercial power stable frequency threshold f th and the duration t > commercial power stable duration threshold T 市电th , or P1 < commercial power stable power threshold P th and the duration t > commercial power stable duration threshold T 市电th , the commercial power is in a power-off state.

[0074] The second power consumption information includes the second current I2, the second voltage V2, and the second power P2 supplied by the mains to the conversion module. When the second power consumption information satisfies the condition that the second current I2 < the mains stable current threshold I... th And the duration t > the threshold T for stable mains power duration 市电th The second voltage V2 < the mains stable voltage threshold V th And the duration t > the threshold T for stable mains power duration 市电th The second frequency f2 < the mains stable frequency threshold f th And the duration t > the threshold T for stable mains power duration 市电th Or the second power P2 < the mains stable power threshold P th And the duration t > the threshold T for stable mains power duration 市电th At that time, the mains power was out.

[0075] The fifth set of power consumption information includes the third current I3, the third voltage V3, and the third power P3 supplied by the mains to each elevator. When the fifth set of power consumption information satisfies the condition that the third current I3 < the mains stable current threshold I... th And the duration t > the threshold T for stable mains power duration 市电th The third voltage V3 < the mains stable voltage threshold V th And the duration t > the threshold T for stable mains power duration 市电th The third frequency f3 < the mains stable frequency threshold f th And the duration t>T 市电th Or the third power P3 < the mains stable power threshold P th And the duration t > the threshold T for stable mains power duration 市电th At that time, the mains power was out.

[0076] It is important to know that the first When the elevator is in operation, the voltages at its connection terminals (positive and negative terminals) are respectively and , yes Let N be any positive integer, where N is the number of elevators. The voltage across the elevator throughout its operation and All in Scope, number The maximum power of the elevator is P cmaxi .

[0077] When the energy-saving control module controls the conversion module to not operate, if Then the battery module will automatically supply power to the first... Elevator discharge; among which, represents the rated voltage of the battery module; if the voltage of the elevator, represents the rated voltage of the battery module; if , the battery module automatically stores the regenerative energy generated by the elevator when the elevator is ascending or descending. the regenerative energy generated by the elevator when the elevator is ascending or descending.

[0078] In another embodiment, in the coordinated action, when the commercial power is available, the energy-saving control module is configured to control the auxiliary power module to act so that the auxiliary power module switches its power input from the commercial power or from the battery module to the commercial power, to ensure stable operation of the elevator control system.

[0079] In a further embodiment, in the coordinated action, when the commercial power is available and the battery module meets a first preset condition, the energy-saving control module controls the auxiliary power module to act so that the auxiliary power module switches its power input from the commercial power, and controls the conversion module to act to convert the commercial power into direct current to charge the battery module, and controls the battery module to automatically receive the regenerative energy generated by the elevator when the elevator is ascending or descending or not to charge or discharge with the elevator; wherein the first preset condition is that the voltage V th欠 of any single cell in the battery module is less than a single cell under-voltage threshold V , the SOC of any single cell in the battery module is less than a single cell capacity low threshold SOC th低 , the total voltage V B of the battery module is less than a battery module low voltage threshold V BTH低 , or the SOC of the battery module is less than a battery module capacity low threshold SOC Bth低 .

[0080] In the process of converting the commercial power into direct current to charge the battery module, when the battery module meets a second preset condition, the energy-saving control module controls the conversion module not to act to stop charging the battery module with the commercial power, and controls the battery module to automatically discharge to the elevator or automatically receive the regenerative energy generated by the elevator when the elevator is ascending or descending or not to charge or discharge with the elevator;

[0081] wherein the second preset condition is that the total voltage V B of the battery module is greater than a battery module high voltage threshold V BTH高 , the SOC of the battery module is greater than a battery module capacity high threshold SOC Bth高 , the voltage of any single cell in the battery module is greater than a single cell high voltage threshold or the SOC of any single cell in the battery module is greater than a single cell capacity high threshold SOC th高 .

[0082] The embodiment is thus configured, so that the power supply of the auxiliary power supply module can be switched to the commercial power in time, thereby ensuring stable operation of the elevator control system, avoiding continuous discharge of the battery in a power shortage state, and stopping charging of the battery module by the commercial power in time when the battery module meets the second preset condition.

[0083] In a further embodiment, when the commercial power is available, the battery module meets the first preset condition, and the current commercial power price is in the daily minimum price time period, the energy-saving control module controls the conversion module to act to convert the commercial power into direct current to charge the battery module, and controls the battery module to automatically receive regenerative energy generated by the elevator ascending or descending or to not charge or discharge with the elevator.

[0084] The embodiment is thus configured, so that the battery can be charged by the low-price commercial power as much as possible, thereby achieving the effect of energy-saving benefits.

[0085] In every predetermined number of times of converting the commercial power into direct current to charge the battery module, the energy-saving control module also controls the battery module to perform global OCV calibration and balancing.

[0086] Specifically, in every predetermined number of times of converting the commercial power into direct current to charge the battery module, when the SOC of the battery module reaches the upper limit battery module capacity high threshold value, the energy-saving control module records the time when the SOC of the battery module reaches the upper limit battery module capacity high threshold value as T 充 , calculates the time difference T 余 between the time when the SOC of the battery module reaches the upper limit battery module capacity high threshold value and the time when the daily minimum price time period ends, wherein T 余 =T 低结 -T 充 , and T 低结 represents the time when the daily minimum price time period ends.

[0087] If T 余 >T 均衡min , and the battery module capacity high threshold value < 100%, the energy-saving control module controls the conversion module to continue charging the battery module, and synchronously controls the elevator generating 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.

[0088] When the SOC of the battery module reaches 100% or the battery module meets the second preset condition, the energy-saving control module controls the conversion module to be inactive to stop charging the battery module by the commercial power, and controls the battery module to start global OCV calibration and balancing of the battery cell until T 余 ends, wherein T 均衡min is the shortest time required for global OCV calibration and balancing of the battery cell of the battery module.

[0089] If T余 T 均衡min , and the battery module capacity high threshold value = 100%, the energy saving control module controls the battery module to start the full domain OCV calibration equalization of the battery cell until T 余 ends.

[0090] If T 余 ≤ T 均衡min , the energy saving control module controls the battery module to start the full domain OCV calibration equalization of the battery cell until T 余 ends.

[0091] In a further embodiment, when the mains is powered, the battery module meets the first preset condition, and the current mains price is in the daily non-lowest price time period, the energy saving control module controls the conversion module to be inactive, so that the battery module automatically receives the regenerative energy generated by the elevator rising or falling or does not charge or discharge with the elevator, to avoid the battery module being damaged due to long-term power loss.

[0092] In a further embodiment, in the coordinated action, when the mains is powered, the battery module meets the third preset condition, the energy saving control module controls the auxiliary power supply module to switch the power input of the auxiliary power supply module to the battery module, controls the conversion module to be inactive 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 act to convert the direct current of the battery module into alternating current and transmit to the mains; wherein the third preset condition is that the voltage V of any single battery cell in the battery module ≥ single battery cell under-voltage threshold value V th欠 , the SOC of any single battery cell in the battery module ≥ single battery cell capacity low threshold value SOC th低 , the total voltage V B of the battery module ≥ battery module low voltage threshold value V BTH低 , and the SOC of the battery module ≥ battery module capacity low threshold value SOC Bth低 .

[0093] This embodiment tries to use the battery module for auxiliary power supply.

[0094] In a further specific embodiment, when the mains is powered, the battery module meets the third preset condition and the current mains price is in the daily non-lowest price time period, the energy saving control module controls the conversion module to act to convert the direct current of the battery module into alternating current and transmit to the mains, and controls the battery module to discharge to the elevator or receive the regenerative energy generated by the elevator. This embodiment is thus arranged to enable the elevator to take power from the battery module during the price peak period, to achieve the effect of the lowest power cost, while participating in the peak-valley arbitrage of the power grid to maximize the income, and to promote the rapid transformation of the elevator to low carbon. At this time, the conversion module is a bidirectional conversion module.

[0095] In a further specific embodiment, when the mains is powered, the battery module meets the third preset condition, and the current mains price is in the daily minimum price time period, the energy-saving control module controls the conversion module to be inaction to make the battery module automatically discharge to the elevator or automatically receive the regenerative energy generated by the elevator ascending or descending.

[0096] In the embodiment, the circuit breaker, the at least one contactor group and the at least one fuse group are further included; the connection between the direct current side of the conversion module and the electrode connection end of the battery module is connected with the input end of the circuit breaker, the output end of the circuit breaker is connected with the input end of the at least one contactor group respectively, the output end of the at least one contactor group is connected with the input end of the at least one fuse group one by one, the output end of the at least one fuse group is used to be connected with the connection end of the at least one elevator one by one, the at least one fifth electric energy sampling module is used to be connected between the at least one contactor group and the corresponding elevator, and the circuit breaker and the at least one contactor group are in communication connection with the energy-saving control module.

[0097] The embodiment is thus arranged to control the loop between the battery module and each elevator respectively, especially when the elevator is multiple.

[0098] Specifically, the circuit breaker and the at least one contactor group are controlled and detected by dry contact points.

[0099] In the normal operation of the elevator, the energy-saving control module controls the circuit breaker and each contactor group to be closed, and obtains the state information of the elevator and the power information of the battery module; and controls the battery module and the contactor group to cooperate to make the battery module supply power to the elevator or receive the regenerative energy generated by the elevator ascending or descending or not charge and discharge with the elevator according to the state information of the elevator and the power information of the battery module.

[0100] The state information of the elevator includes the number N of the elevator, the rated power and real-time power of each elevator, and the number R of the elevator generating regenerative power and the number S of the elevator being powered;

[0101] In the cooperation process, the energy-saving control module calculates the total regenerative energy Q R generated by the R elevators according to the state information of the elevator s , calculates the chargeable power Q 充max and the dischargeable power Q 放max of the battery module according to the power information of the battery module R ;

[0102] If Q s > Q R and Q s > Q 充max , the battery module receives the power to Q 充maxWhen the battery module discharges to Q

[0103] If Q R <Q s and Q s - Q R > Q 放max , the contactor group corresponding to the R section elevator is turned off when the battery module discharges to Q 放max .

[0104] If Q R = Q s , the battery module and the elevator are not charged or discharged.

[0105] The embodiment can supply the total regenerative energy QR generated by the R section elevator to the S section elevator through the cooperation of the battery module and each contactor group, achieving the purpose of energy saving.

[0106] In one specific embodiment, there are three elevators, namely elevator 1, elevator 2 and elevator 3. The operating states of the three elevators are as follows: elevator 1 is in a stop non-operating state, the power Q1=0, elevator 2 is in a heavy load downward state to generate regenerative energy Q2, and elevator 3 is in a heavy load upward state to require power Q3. The energy saving control module controls the contactor of elevator 1 to be turned off, and does not charge or discharge elevator 1. The contactors of elevators 2 and 3 are in a closed state. The chargeable power of the battery module is Q rated capacity, rated capacity, and the SOC Bth低 is a low threshold of the capacity of the battery module.

[0107] When Q2>Q3 and Q2-Q3>Q 充max , the energy saving control module controls the battery module to be charged, and controls the contactor of elevator 2 to be turned off when the power reaches Q

[0108] When Q2<Q3 and Q3-Q2>Q 放max , the energy saving control module controls the battery module to be discharged, and controls the contactor of elevator 2 to be turned off when the power reaches Q 放max .

[0109] In another specific embodiment, there are three elevators, namely elevator 1, elevator 2 and elevator 3. The operating states are as follows: elevator 1 and elevator 2 are in a heavy load downward state to generate regenerative energy Q1 and Q2 respectively, and elevator 3 is in a heavy load upward state to require power Q3. The contactors of elevators 2 and 3 are in a closed state, and the chargeable power of the battery module is Q rated capacity, and the dischargeable power is Q rated capacity.

[0110] 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 , and then controls the contactors on Elevator 1 and Elevator 2 to disconnect;

[0111] 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 , and then controls the contactors on Elevator 1 and Elevator 2 to disconnect.

[0112] 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.

[0113] In a further embodiment, when the mains power 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 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 further 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.

[0114] 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 ;

[0115] 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 cell th稳 , the capacity SOC of any single cell in the battery module > the capacity threshold SOC of the single cell th高 , the total voltage V of the battery module B > the high-voltage threshold V of the battery module BTH高 or the capacity SOC of the battery module > the high-capacity threshold SOC of the battery module Bth高 ;

[0116] Among them, the third 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 ≥ single cell capacity low threshold SOC th低 , total voltage V of the battery module B ≥ battery module low voltage threshold V BTH低 and the SOC of the battery module is greater than or equal to the battery module capacity low threshold SOC Bth低 .

[0117] In further embodiments, 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 management system in the battery module to be powered off, and the system hibernation mode is started.

[0118] In further embodiments, after the system hibernation mode is started, the energy-saving control module is further 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 system hibernation mode to be exited, and the power of the auxiliary power supply module is switched to the battery module, and the battery module is controlled to remain in the working mode.

[0119] In further embodiments, after the system hibernation mode is started, the energy-saving control module is further 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 system hibernation mode to be exited, 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 to make the battery module supply power to the elevator or receive regenerative energy generated by the elevator ascending or descending or not charge or discharge with the elevator.

[0120] In further embodiments, during the process of controlling the battery module to remain in the working mode, the energy-saving control module is further 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 to make the battery module supply power to the elevator or receive regenerative energy generated by the elevator ascending or descending or not charge or discharge with the elevator.

[0121] In this way, the embodiment can ensure the electrical safety of all elevators during failure or failure maintenance, and can enter the normal operation state in time when the elevator resumes operation; moreover, over-discharge of the battery can be avoided.

[0122] When the number of elevators is multiple, in order to guarantee the electrical safety during elevator failure, in the embodiment, the energy-saving control module is further used to obtain the state of each elevator; wherein the state of the elevator includes working or failure;

[0123] When K all the elevators are in a fault state, the energy-saving control module is further configured to control the disconnection of the contactor group corresponding to the K elevators; where 1 ≤ K <N, and N is the number of elevators; when all the elevators are in a fault state, the energy-saving control module is further configured to control the disconnection of the circuit breaker and all the contactor groups.

[0124] In this embodiment, the battery module includes Y battery packs connected in parallel, and each battery pack includes X cells connected in series in sequence;

[0125] where, 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;

[0126] where, ; in the formula, represents the rated capacity of each cell;

[0127] where, ; in the formula, represents the longest historical power outage time of the local mains power, represents the th elevator's maximum power, N represents the number of elevators, ;

[0128] where, ; in the formula, represents the duration of the non-lowest electricity price period of the day.

[0129] With this setting in this embodiment, it can ensure the normal and stable operation of the elevator during the local power outage time and avoid affecting daily life.

[0130] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An elevator control system with energy-saving calculation function, characterized in that, The application comprises 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 connected with the commercial power and the battery module, and a first electric energy sampling module is connected between the auxiliary power supply module and the commercial power, and the output end of the first electric energy sampling module is connected with the energy-saving control module and the conversion module; the AC side of the conversion module is used for connecting the commercial power, and a second electric energy sampling module is connected between the conversion module and the commercial power; the DC side of the conversion module is connected with the battery module, and the connection between the conversion module and the battery module is connected with at least one elevator; a third electric energy sampling module is connected between the connection and the battery module, and at least one fifth electric energy sampling module is connected between the connection and at least one elevator; each elevator is connected with the commercial power through a fourth electric energy sampling module; The energy-saving control module is connected with each electric energy sampling module, the battery module, the conversion module and the auxiliary power supply module in communication; The battery module is used for supplying power for the auxiliary power supply module and supplying power for the elevator or receiving the regenerated energy generated by the elevator; the conversion module is used for converting the commercial power into DC power and charging the battery module, or converting the commercial power into DC power and charging the battery module, and converting the DC power of the battery module into AC power and transmitting the AC power to the commercial power; the auxiliary power supply module is used for supplying power for the energy-saving control module and the conversion module, and controlling the power input to be switched between the commercial power and the battery module; The energy-saving control module is used for obtaining the commercial power information and the power information of the battery module, and controlling the battery module, the conversion module and the auxiliary power supply module to coordinate and act to realize the energy-saving power consumption of at least one elevator according to the commercial power information and the power information, and calculating the total power saving according to the power consumption information collected by each electric energy sampling module. The first electric energy sampling module is used for obtaining the first power consumption information of the commercial power to the auxiliary power supply module; the second electric energy sampling module is used for obtaining the second power consumption information of the commercial power to the conversion module; the third electric energy sampling module is used for obtaining the third power consumption information of the discharge of the battery module or the fourth power consumption information of the charge to the battery module; the fourth electric energy sampling module is used for obtaining the fifth power consumption information of the commercial power to each elevator; 2. The elevator control system having a power saving amount calculation function according to claim 1, characterized by, The fifth electric energy sampling module is used for obtaining the sixth power consumption information of the battery module to each elevator or the seventh power consumption information of the discharge of each elevator to the battery module; wherein each power consumption information comprises power; The energy-saving control module is used for calculating the total power saving according to 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. When the commercial power is powered off, the auxiliary power supply module switches the power input to the battery module; the energy-saving control module controls the conversion module to be inactivated, and controls the battery module to supply power for the elevator or receive the regenerated energy generated by the elevator ascending or descending or not to charge or discharge with the elevator.

3. The elevator control system having a power saving amount calculation function according to claim 2, characterized by, The total amount of electricity saved is ; In the formula, represents the total amount of electricity, represents the amount of electricity in the first electricity usage information, represents the amount of electricity in the second electricity usage information, represents the amount of electricity in the third electricity usage information, represents the amount of electricity in the fourth electricity usage information, represents the amount of electricity in the fifth electricity usage information, and N is the number of elevators, , , represents the amount of electricity in the sixth electricity usage information.

4. The elevator control system having a power saving amount calculation function according to claim 1, characterized by, Each power consumption information further comprises current, frequency and power; when the first power consumption information, the second power consumption information and the fifth power consumption information all satisfy the power-off preset condition, the current commercial power is in the power-off state.

5. The elevator control system having a power saving amount calculation function according to claim 4, characterized by, ​ The power-off preset condition is that the current < mains stable current threshold and the duration > mains stable duration threshold, the voltage < mains stable voltage threshold and the duration > mains stable duration threshold, the frequency < mains stable frequency threshold and the duration > mains stable duration threshold, or the power < mains stable power threshold and the duration > mains stable duration threshold.

6. The elevator control system with power saving amount calculation function according to claim 1, characterized by, 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 to make the power input of the auxiliary power supply module the battery module, controls the conversion module to be inactivated, and controls the battery module to discharge to the elevator or receive the regenerative energy generated by the elevator ascending or descending or not charge or discharge with the elevator, or controls the conversion module to be activated to convert the direct current of the battery module into alternating current and transmit the alternating current to the mains; the third preset condition is that the voltage of any single cell in the battery module is greater than or equal to the single cell under-voltage threshold, the SOC of any single cell in the battery module is greater than or equal to the single cell capacity low threshold, the total voltage of the battery module is greater than or equal to the battery module low voltage threshold, and the SOC of the battery module is greater than or equal to the battery module capacity low threshold.

7. The elevator control system with power saving amount calculation function according to claim 1, characterized by, 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 be activated to switch the power input of the auxiliary power supply module from the mains, controls the conversion module to be activated 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 ascending or descending or not charge or discharge with the elevator; the first preset condition is that the voltage of any single cell in the battery module is less than the single cell under-voltage 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 the mains into direct current 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 be activated to switch the power input of the auxiliary power supply module to the battery module, controls the conversion module to be inactivated, and controls the battery module to supply power to the elevator or receive the regenerative energy generated by the elevator ascending or descending or not charge or discharge with the elevator; the second preset condition is that the total voltage of the battery module is greater than the battery module high voltage threshold, the SOC of the battery module is greater than the battery module capacity high threshold, 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.

8. The elevator control system having a power saving amount calculation function according to claim 7, characterized by, During the process of converting the mains 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 equalization.

9. The elevator control system having a power saving amount calculation function according to claim 8, characterized by, In every predetermined number of times of converting the commercial power into the direct current to charge the battery module, when the SOC of the battery module reaches the high threshold of the capacity of the battery module; the energy-saving control module records the time when the SOC of the battery module reaches the high threshold of the capacity of the battery module as T 充 ; calculates the time difference T 充 between T 余 and the time when the low-price time period of the day ends; wherein T 余 =T 低结 -T 充 , T 低结 represents the time when the low-price time period of the day ends; If T 余 > T 均衡min , and the battery module capacity high threshold < 100%, the energy saving control module controls the conversion module to continue charging the battery module, and synchronously controls the elevator generating 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 is the shortest time required for the battery module full domain OCV calibration equalization. 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 be inaction to stop charging the battery module by using the commercial power, and controls the battery module to start the full-area OCV calibration and equalization of the battery cell until T 余 end; 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 full domain OCV calibration equalization of the battery cell until T 余 ends. If T 余 ≤ T 均衡min , then the energy saving control module controls the battery module to start the full domain OCV calibration and equalization of the battery cell until T 余 ends.

10. The elevator control system having a power saving amount calculation function according to any one of claims 1 to 9, characterized by, The circuit further comprises a circuit breaker, at least one contactor group, and at least one fuse group. The connection between the direct current side of the conversion module and the electrode connection end of the battery module is connected with the input end of the circuit breaker, the output end of the circuit breaker is connected with the input end of at least one contactor group respectively, the output end of at least one contactor group is connected with the input end of at least one fuse group in one-to-one correspondence, the output end of at least one fuse group is used for being connected with the connection end of at least one elevator in one-to-one correspondence, at least one fifth electric energy sampling module is used for being connected between at least one contactor group and the corresponding elevator, the circuit breaker and at least one contactor group are electrically connected with the auxiliary power supply module and are in communication connection with the energy-saving control module.

11. The elevator control system having a power saving amount calculation function according to claim 10, characterized by, In the normal operation of the elevator, the energy-saving control module controls the circuit breaker and each contactor group to be closed, and obtains the state information of the elevator and the power information of the battery module; and controls the battery module and the contactor group to cooperate to make the battery module supply power to the elevator or receive the regenerated energy generated by the elevator ascending or descending or not charge or discharge with the elevator according to the state information of the elevator and the power information of the battery module.

12. The elevator control system having a power saving amount calculation function according to claim 11, characterized by, The state information of the elevator includes the number N of elevators, the rated power and real-time power of each elevator, and the number R of elevators generating regenerated power and the number S of elevators being powered. In the matching process, the energy-saving control module calculates total regenerated energy Q generated by the R-part elevators according to the state information of the elevators R and total consumed energy Q of the S-part elevators s ; calculates chargeable capacity Q of the battery module and dischargeable capacity Q of the battery module according to the power information of the battery module 充max and the power information of the battery module 放max ; If Q R > Q s and Q R -Q s > Q 充max , then control the contactor group corresponding to the R elevator to be disconnected 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 corresponding contactor group of the R section elevator to be disconnected when controlling the battery module to discharge to Q 放max the elevator. If Q R = Q s , then control the battery module and elevator not to charge and not to discharge.

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

14. The elevator control system having a power saving amount calculation function according to claim 13, characterized by, When the commercial power is on, 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 commercial power, and controls the battery module to remain in 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 commercial power, and controls the conversion module to act to convert the commercial power into direct current and charge the battery module until the battery module meets the second preset condition, and controls the battery module to remain in the normal working mode; Wherein, the third preset condition is that the voltage of any single cell in the battery module is greater than or equal to the single cell under-voltage threshold, the SOC of any single cell in the battery module is greater than or equal to the single cell capacity low threshold, the total voltage of the battery module is greater than or equal to the battery module low voltage threshold, and the SOC of the battery module is greater than or equal to the battery module capacity low threshold; Wherein, the first preset condition is that the voltage of any single cell in the battery module is less than the single cell under-voltage 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; Wherein, the second preset condition is that the voltage of any single cell in the battery module is greater than the single cell stable voltage 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 having a power saving amount calculation function according to claim 13, characterized by, When the mains power is 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 management system in the battery module to be powered off and the system to be in the sleep 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 be powered off and the system to be in the sleep mode; The third preset condition is that the voltage of any single cell in the battery module is greater than or equal to the single cell under-voltage threshold, the SOC of any single cell in the battery module is greater than or equal to the single cell capacity low threshold, the total voltage of the battery module is greater than or equal to the battery module low voltage threshold, and the SOC of the battery module is greater than or equal to 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 under-voltage 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 having a power saving amount calculation function according to claim 15, characterized by, After the system is in the sleep mode, the energy-saving control module further 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, switches the power of the auxiliary power supply module to the battery module, and controls the battery module to be in the working mode; The second preset condition is that the voltage of any single cell in the battery module is greater than the single cell stable voltage 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 having a power saving amount calculation function according to claim 15, characterized by, After the system is in the sleep mode, the energy-saving control module further 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 circuit breaker and each contactor group to be closed, controls the battery management system in the battery module to operate normally, and controls the battery module and the contactor group to cooperate to supply power to the elevator or receive the regenerative energy generated by the elevator ascending or descending or not to charge or discharge with the elevator.

18. The elevator control system having a power saving amount calculation function according to any one of claims 14 to 17, characterized by, In the process of controlling the battery module to be in the working mode, the energy-saving control module further 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 to supply power to the elevator or receive the regenerative energy generated by the elevator ascending or descending or not to charge or discharge with the elevator.

19. The elevator control system with power saving amount calculation function according to claim 1, characterized by, The battery module includes a plurality of battery packs connected in parallel, each battery pack including a plurality of battery cells connected in series. Y X ​​ wherein the conditions that the battery module needs to satisfy are ; wherein, represents the maximum capacity of the battery module, represents the amount of electricity required for normal operation of all elevators when the local power history has the longest power outage time; represents the amount of electricity required for normal operation of all elevators during the non-minimum electricity price period of the day; wherein, ; in the formula, represents the rated capacity of each battery cell; wherein, ; in the formula, represents the longest time of local power history power outage, represents the first the maximum power of the elevator, N represents the number of elevators, ; wherein ; in the formula, represents the length of the non-minimal price time period of the day.

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