CN107947346B - Management system, method and storage medium for charging elevator system battery - Google Patents

Management system, method and storage medium for charging elevator system battery Download PDF

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CN107947346B
CN107947346B CN201711310143.2A CN201711310143A CN107947346B CN 107947346 B CN107947346 B CN 107947346B CN 201711310143 A CN201711310143 A CN 201711310143A CN 107947346 B CN107947346 B CN 107947346B
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battery
capacity
charging
power
day
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CN107947346A (en
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芮建彬
仲兆峰
黄立明
王鹏
黄诗勇
钟海峰
陈�峰
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Hitachi Building Technology Guangzhou Co Ltd
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Hitachi Building Technology Guangzhou Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

The invention discloses a management system, a method and a storage medium for charging a battery of an elevator system, wherein the management system comprises a power failure emergency device, a battery charging management board and a battery, the power failure emergency device charges the battery to a first capacity of the battery through the battery charging management board, the first capacity is obtained according to a first algorithm based on idle power of the elevator system and busy power of the elevator system, the battery charging management board further comprises a coulometer for detecting the residual capacity of the battery, the power failure emergency device is also used for charging the battery to the first capacity when the residual capacity is smaller than or equal to a second capacity of the battery, so that the charging and discharging of the battery are always in an 'non-full multiple charging and discharging' state, the charging mode is favorable for prolonging the service life of the battery, meanwhile, the time for each charging supplement is short, and the battery except for emergency power supply time and charging time, are all in a dormant standby state, which is also beneficial to improving the service life of the battery.

Description

Management system, method and storage medium for charging elevator system battery
Technical Field
The embodiment of the invention relates to the technical field of elevator system battery charging management, in particular to a management system, a management method and a storage medium for elevator system battery charging.
Background
When batteries of emergency power supplies of most elevator systems in the market are charged, most of the charging methods adopted are constant-current charging and constant-voltage charging.
In the charging process, the battery voltage is generally adopted as a method for judging the battery capacity, in order to ensure that the battery is fully charged, the set charging limit voltage is larger, in the charging process, a complementary charging return voltage difference is also set, and when the actual voltage of the battery is smaller than the difference between the charging limit voltage and the complementary charging return voltage difference, the battery capacity is considered to be reduced, and the battery is subjected to complementary charging.
However, due to the polarization of the battery itself, the battery voltage will automatically decrease by a certain value after the battery is fully charged (i.e. after the battery is charged to the charge limit voltage), and at this time, the charging system is liable to misunderstand that the battery capacity is decreased and needs to be recharged, resulting in the repeated float charging of the battery, which not only wastes the charging time, but also damages the battery performance and reduces the battery life.
Disclosure of Invention
The invention provides a management system and a management method for elevator system battery charging and a storage medium, which are used for solving the problems that the existing elevator system battery charging method is slow in charging, the battery performance is damaged and the battery life is shortened.
In a first aspect, an embodiment of the present invention provides a management system for battery charging in an elevator system, including:
the power failure emergency device, the battery charging management board and the battery;
the power failure emergency device is electrically connected with a mains supply and an elevator system and is used for emergency power supply of the elevator system when the mains supply fails, the power failure emergency device further comprises a charger, the power failure emergency device is electrically connected with the battery charging management board, the battery charging management board is electrically connected with the battery, the power failure emergency device is charged to the first capacity of the battery through the battery charging management board, the first capacity is obtained according to a first algorithm based on idle-time power in the same day and busy-time power in the same day in the elevator system, and a formula used by the first algorithm is as follows:
Figure GDA0002576990470000021
in the formula Q1Is a first capacity, P1Is the idle power of the day, P2Is the busy hour power of the day, T1Busy hour emergency time, T, for a set power failure emergency device2For the idle time of the set power failure emergency device, U is the electromotive force of the battery, K1Correction system greater than 1Counting;
the battery charging management board further comprises a coulometer for detecting the remaining capacity of the battery, the power failure emergency device is further configured to charge the battery to the first capacity when the remaining capacity is smaller than or equal to a second capacity of the battery, the second capacity is obtained by multiplying the first capacity by a preset correction coefficient, and a calculation formula of the second capacity is as follows:
Q2＝K2Q1
in the formula Q1Is of a first capacity, wherein Q2Is the second capacity, wherein K2Is a preset correction factor, where K2And K1The product of (d) is greater than 1.
In a second aspect, an embodiment of the present invention further provides a method for charging a battery of an elevator system, where the management system for charging a battery of an elevator system includes:
acquiring the idle power of the current day and the busy power of the current day in an elevator system;
obtaining a first capacity of a battery according to a first algorithm based on the idle time power and the busy time power, wherein a formula used by the first algorithm is as follows:
Figure GDA0002576990470000022
in the formula Q1Is a first capacity, P1Is the idle power of the day, P2Is the busy hour power of the day, T1Busy hour emergency time, T, for a set power failure emergency device2For the idle time of the set power failure emergency device, U is the electromotive force of the battery, K1A correction factor greater than 1;
charging the battery so that the capacity of the battery is a first capacity;
detecting the residual capacity of the battery, and if the residual capacity is smaller than or equal to a second capacity, obtaining the second capacity by multiplying the first capacity by a preset correction coefficient, wherein the calculation formula of the second capacity is as follows:
Q2＝K2Q1
in the formula Q1Is of a first capacity, wherein Q2Is the second capacity, wherein K2Is a preset correction factor, where K2And K1The product of (a) is greater than 1;
the method comprises the steps of obtaining set idle time power of the day and busy time power of the day, obtaining third capacity of a battery according to a first algorithm, detecting the remaining capacity of the battery, and charging the battery if the remaining capacity is smaller than or equal to second capacity and the third capacity is larger than the first capacity, so that the capacity of the battery is the third capacity.
In a third aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the charging method described above.
According to the management system and the charging method for charging the battery of the elevator system, the battery is charged to the first capacity smaller than the actual maximum capacity of the battery, when the residual capacity of the battery is reduced to be smaller than or equal to the second capacity, the battery is charged to the first capacity in a supplementing mode, so that the charging and discharging of the battery are always in an 'non-full multi-charging and discharging' state, the service life of the battery is prolonged, meanwhile, the time for each supplementing charging is short, the battery is in a dormant standby state except for emergency power supply time and charging time, and the service life of the battery is prolonged.
Drawings
Fig. 1 is a block diagram of a management system for charging a battery of an elevator system according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating steps of a method for charging a battery of an elevator system according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a block diagram of a management system for charging a battery of an elevator system according to an embodiment of the present invention, where the management system 10 may include a power failure emergency device 20, a battery charging management board 30, and a battery 40.
The power failure emergency device 20 is electrically connected with a mains supply and an elevator system, and is used for supplying power to the elevator system in an emergency when the mains supply fails, the power failure emergency device 20 further comprises a charger 201, the power failure emergency device 20 is electrically connected with a battery charging management board 30, the battery charging management board 30 is electrically connected with a battery 40, the power failure emergency device 20 charges the battery 40 to a first capacity of the battery through the battery charging management board 30, and the first capacity is obtained according to a first algorithm based on idle-time power of the elevator system on the same day and busy-time power of the elevator system on the same day.
The battery charging management board 30 further includes a coulomb counter 301, the coulomb counter 301 is configured to detect a remaining capacity of the battery 40, and the power outage emergency device 20 is further configured to charge the battery 40 to a first capacity when the remaining capacity is smaller than or equal to a second capacity of the battery, where the second capacity is obtained by multiplying the first capacity by a preset correction factor.
Specifically, the idle power of the elevator system on the same day and the busy power of the elevator system on the same day may be preset in the elevator system by a technician according to design parameters and actual operation conditions of the elevator system, and preferably, the management system 10 may further include a power meter 50, where the power meter 50 is located between the commercial power emergency device and the power failure emergency device 20 and is used for detecting the real-time power of the elevator system on each day, so that the battery charging management board 30 may further calculate the idle power of the elevator system on the same day and the busy power of the elevator system on the same day according to the real-time power of the elevator system in a certain time before the current day, so that the idle power of the elevator system on the same day and the busy power of the elevator system on the same day can be updated along with different. The "certain time" is set by the technician, and may be, for example, 1 week, 5 days, 1 day, 5 hours, or even 1 hour or even several tens of minutes.
In determiningAfter the idle power of the current day and the busy power of the current day, the first capacity may be obtained according to a preset first algorithm. As an example, the idle power of the day is P1Busy hour power of the day is P2According to the design of the elevator system, the busy hour emergency time of the power failure emergency device is set as T1The idle time emergency time is set as T2Then, first capacity Q1Can be that
Figure GDA0002576990470000051
Wherein U is the electromotive force of the battery, K1For a correction factor greater than 1, typically, the first capacity Q1Must be less than the actual maximum capacity of the battery and the second capacity Q2Is composed of
Figure GDA0002576990470000052
Wherein, K2K1And the capacity is larger than 1, so that when the battery is under the second capacity, the elevator system can still be sufficiently powered when the commercial power is cut off.
According to the management system for charging the battery of the elevator system, the battery is charged to the first capacity which is smaller than the actual maximum capacity of the battery, when the remaining capacity of the battery is reduced to be smaller than or equal to the second capacity, the battery is charged to the first capacity in a supplementing mode, so that the charging and discharging of the battery are always in an 'non-full multi-charging and discharging' state, the service life of the battery is prolonged, meanwhile, the time for each supplementing charging is short, the battery is in a dormant standby state except for emergency power supply time and charging time, and the service life of the battery is prolonged.
In a preferred embodiment of the present invention, the power outage emergency device 20 is further configured to charge the battery to a third capacity when the remaining capacity is less than or equal to the second capacity of the battery, the third capacity being a capacity obtained according to the first algorithm based on the idle-time power of the day and the busy-time power of the day when the remaining capacity is less than or equal to the second capacity, and the third capacity being greater than the first capacity.
Specifically, when the remaining capacity of the battery is less than or equal to the second capacity of the battery, it is determined whether a third capacity obtained by the idle power of the day and the busy power of the day when the remaining capacity is less than or equal to the second capacity according to the first algorithm is greater than the first capacity, and when the third capacity is greater than the first capacity, the battery is charged to the third capacity in a supplementary manner, so that the capacity of the supplementary charging is updated along with the operation state of the elevator system in the process of the supplementary charging of the battery, and the elevator system is better supplied with emergency power.
It should be noted that "the day when the remaining capacity is less than or equal to the second capacity" may be the same day as the day when the battery is charged to the first capacity, at this time, since the data source calculated by the third capacity is the same as the data source calculated by the first capacity, the third capacity is equal to the first capacity, and at this time, the recharging is performed by directly recharging to the first capacity.
The "day when the remaining capacity is less than or equal to the second capacity" may not be the same day as the day when the battery is charged to the first capacity, but a situation that the "remaining capacity is less than or equal to the second capacity" occurs in days after the day when the battery is charged to the first capacity, at this time, since the data source calculated by the third capacity and the first capacity is different, the size relationship between the third capacity and the first capacity is judged, and when the third capacity is greater than the first capacity, the battery is charged to the third capacity.
In a preferred embodiment of the present invention, referring to fig. 1, the battery charging management board 30 may further include a temperature correction module 302 and a battery aging correction module 303, where the temperature correction module 302 is configured to obtain a charging operating temperature of the battery and correct a charging current and/or a charging voltage of the charger according to the charging operating temperature; the aging correction module 303 is configured to obtain a usage time of the battery, and correct a charging current and/or a charging voltage of the charger according to the usage time.
In particular, during the charging of the battery, the battery manufacturer will normally be at a standard temperature T0The recommended constant current standard charging current I is given0And a constant voltage standard charging voltage U0But I0、U0Are all based on the temperature at a standard temperature T0The recommended values for the lower and new batteries are such that the charging operation temperature is not necessarily exactly the standard temperature at the time of the actual charging operation of the battery, and as the battery ages during use, it is necessary to correct the standard charging current and/or the standard charging current in accordance with the charging operation temperature, and the time of use of the battery. The embodiment of the invention corrects the standard charging current and the standard charging voltage through a certain algorithm.
As an example, for any one charging operation temperature T, a battery with the used time M, wherein M represents the number of months of battery use, and for the correction of the standard charging current, the corrected charging current I1Is composed of
I1＝I0-ΔI1-ΔI2
Wherein, Delta I1＝|(T-T0)|×i1，i1The temperature current correction coefficient is more than 0 and the unit is ampere, delta I2＝M×i2，i2The time current correction coefficient is more than 0 and the unit is ampere. Preferably, i1＝i2＝10mA。
For the correction of the standard charging voltage, the corrected charging voltage U1Is composed of
U1＝U0+ΔU1+ΔU2
Wherein, Delta U1＝(T-T0)×u1，u1The temperature voltage correction coefficient is less than 0, and the unit is volt, delta U2＝M×u2，u2The time voltage correction factor is more than 0 and the unit is volt. Preferably, u1＝-3mV，u2＝15mV。
It should be noted that the reason why the above exemplary correction method is set is that: for the actual charging working temperature T of the battery, when T is more than T0When the temperature is higher than the standard temperature, the activity of the internal substances of the battery is higher, the charging current is properly reduced and the charging voltage is properly reduced for protecting the battery, and when T is less than T0When the temperature is lower than the standard temperature, the activity of substances in the battery is insufficient, the charging current is properly reduced to protect the battery, and meanwhile, because the internal resistance of the battery rises at a lower temperature, the charging voltage needs to be properly increased in order to ensure that the normal charging can be carried out in a constant-voltage charging stage; for the battery life, the performance of the aged battery is reduced compared with that of the new battery by delta I2The standard charging current is also reduced to protect the battery, and the charging voltage is appropriately increased so that the aged battery can be charged more fully.
It should be further noted that, because the technical solution of the embodiment of the present invention is to make the battery charge and discharge always in the "not-full multiple charge and discharge", it is possible that the battery is always in the constant current charging state in the whole charging process, that is, the battery has not yet reached the constant voltage charging state, and the battery has already been charged to the first capacity, and at this time, the standard charging voltage is not corrected, and the above-mentioned correction process for the current and the voltage is respectively corrected in the constant current charging stage and the constant voltage charging stage, and of course, the solution of the embodiment of the present invention may also have undergone the constant voltage charging stage when the battery has been charged to the first capacity.
In a preferred embodiment of the present invention, referring to fig. 1, the charge management system may further include a battery capacity periodic correction module 60, the battery capacity periodic correction module 60 is electrically connected to the battery charge management board 30, and the battery capacity periodic correction module 60 is configured to periodically measure an actual maximum capacity value Qmax of the battery when the real-time power of the elevator system is less than or equal to a preset threshold, as mentioned above, since the first charge capacity is less than the actual maximum capacity Qmax of the battery, when the battery capacity periodic correction module 60 finds that Qmax is less than or equal to the first capacity, it indicates that the battery is scrapped and needs to be replaced by a new battery.
Example two
The following describes in detail a charging method of an elevator system battery provided in a first embodiment based on a management system for charging the elevator system battery, and fig. 2 is a flow chart of steps of a charging method for an elevator system battery provided in a second embodiment of the present invention, and specifically includes the following steps:
step 101, obtaining the idle power of an elevator system on the same day and the busy power of the elevator system on the same day;
in the embodiment of the invention, the idle power of the day and the busy power of the day can be obtained, and specifically, the idle power of the day and the busy power of the day can be preset in the elevator system by a technician according to the design parameters and the actual operation condition of the elevator system.
Preferably, in order to make the idle power of the day and the busy power of the day updated with the different running states of the elevator each day, step 101 may further comprise the following sub-steps:
a substep S11 of detecting the real-time power of the elevator system and obtaining the real-time power in a certain time before the current day;
in the embodiment of the present invention, the real-time power of the elevator system every day can be detected, and the real-time power in a certain time before the current day can be obtained, specifically, the "certain time" is set by a technician, for example, the power can be set by the technician for 1 week, 5 days, 1 day, 5 hours, or even 1 hour or even tens of minutes.
As an example, real-time power may be obtained 5 days prior to the day.
A substep S12, determining idle time periods and busy time periods of each day according to the size distribution of real-time power within a certain time;
in the embodiment of the invention, the idle time period and the busy time period of each day can be determined statistically according to the size distribution of the real-time power within a certain time.
For example, according to the real-time power variation rule within 5 days, the busy hour time period is statistically determined to be 8: 00-20: 00, and correspondingly, the idle time period is 20:00-24:00, 00:00-8: 00.
Substep S13, calculating and obtaining a first power value as the idle time power of the current day according to a second algorithm based on the real time power in the idle time period;
in the embodiment of the present invention, after the idle time period is determined, a first power value may be calculated according to the real-time power of the idle time period within a certain time before the current day and according to a second algorithm, and the first power value is obtained as the idle time power P1 of the current day.
For example, the average value of the real-time power in the time periods of 20:00-24:00, 00:00-8:00 within 5 days before the current day can be taken as the idle time power P of the current day1Of course, the specific second algorithm is not limited in the embodiments of the present invention, and the skilled person may select the second algorithm according to the actual situation.
And a sub-step S14, calculating and obtaining a second power value as the busy hour power of the day according to a third algorithm based on the real time power in the busy hour time period.
In the embodiment of the present invention, after the busy hour time period is determined, a second power value may be calculated according to the real-time power of the busy hour time period within a certain time before the current day by a third algorithm to obtain the busy hour power P2 on the current day.
For example, 8: the average value of the real-time power in the time period of 00-20: 00 is used as the busy hour power P of the day2Of course, the specific third algorithm is not limited in the embodiment of the present invention, and the skilled person may select the third algorithm according to the actual situation.
102, obtaining a first capacity of a battery according to a first algorithm based on idle time power of the day and busy time power of the day;
in the embodiment of the present invention, after determining the idle power of the current day and the busy power of the current day, the first capacity of the battery may be obtained according to a preset first algorithm.
As an example, the idle power of the day is P1Busy hour power of the day is P2According to the design of the elevator system, the busy hour emergency time of the power failure emergency device is set as T1The idle time emergency time is set as T2Then, first capacity Q1Can be that
Figure GDA0002576990470000101
Wherein U is the electromotive force of the battery, K1For a correction factor greater than 1, typically, the first capacity Q1Is required to be less thanThe actual maximum capacity of the battery.
103, charging the battery to enable the capacity of the battery to be a first capacity;
in the embodiment of the invention, after the first capacity is determined, the battery is charged so that the capacity of the battery is the first capacity.
And 104, detecting the residual capacity of the battery, and if the residual capacity is smaller than or equal to the second capacity, obtaining the second capacity by multiplying the first capacity by a preset correction coefficient.
And 105, supplying power to the battery to enable the capacity of the battery to be a third capacity.
In the embodiment of the present invention, after the battery is charged to the first capacity, the charging of the battery is stopped, and at this time, the capacity of the battery may gradually decrease due to a leakage effect of self-discharge of the battery or other reasons. And the second capacity is obtained by multiplying the first capacity by a preset correction coefficient on the basis of the first capacity.
As an example, the second capacity Q2Is composed of
Figure GDA0002576990470000111
Wherein, K2K1And the capacity is larger than 1, so that when the battery is under the second capacity, the elevator system can still be sufficiently powered when the commercial power is cut off.
According to the elevator system battery charging method provided by the embodiment of the invention, the battery is charged to the first capacity which is smaller than the actual maximum capacity of the battery, and when the remaining capacity of the battery is reduced to be smaller than or equal to the second capacity, the battery is charged to the third capacity in a supplementary manner, so that the charging and discharging of the battery are always in a non-full multi-charging and discharging state.
In a preferred embodiment of the invention, the third capacity may be obtained by:
s21, obtaining a fourth capacity according to a first algorithm based on the idle time power of the day and the busy time power of the day when the residual capacity is less than or equal to the second capacity;
in the embodiment of the present invention, the fourth capacity may be obtained according to the first algorithm based on the off-time power of the day and the busy-time power of the day when the remaining capacity is less than or equal to the second capacity.
As described above, the "day when the remaining capacity is less than or equal to the second capacity" may be the same day as the day when the battery is charged to the first capacity, or may not be the same day as the day when the battery is charged to the first capacity, but the "remaining capacity is less than or equal to the second capacity" may occur several days after the day when the battery is charged to the first capacity.
S22, judging whether the fourth capacity is larger than the first capacity;
s23, if not, the first capacity is the third capacity;
s24, if yes, the fourth capacity is the third capacity.
Specifically, when the calculated fourth capacity is larger than the first capacity, it indicates that the power of the elevator system is increased since the recent time, and the updated fourth capacity is used as the third capacity; when the fourth capacity is not greater than the first capacity, it indicates that the power of the elevator system has been reduced or kept unchanged since the recent time, and the first capacity is still used as the third capacity.
In a preferred embodiment of the present invention, the charging of the battery may be performed in such a manner that the step of charging the battery may include:
s31, acquiring the charging working temperature of the battery and the service time of the battery;
in the embodiment of the invention, the battery charging management board can acquire the charging working temperature of the battery and the service time of the battery through the temperature correction module and the battery aging correction module which are included by the battery charging management board, so as to facilitate subsequent correction and use.
S32, correcting the charging current and/or the charging voltage during charging according to the charging working temperature and the using time, and obtaining the corrected charging current and/or charging voltage;
in the embodiment of the present invention, after the charging operating temperature of the battery and the service time of the battery are obtained, the charging current and/or the charging voltage may be corrected, and the specific correction method may refer to the foregoing description, which is not described herein again in the embodiment of the present invention.
And S33, charging the battery by using the corrected charging current and/or charging voltage.
In the embodiment of the present invention, the corrected charging current and/or charging voltage are obtained, and the battery may be charged by using the corrected charging current and/or charging voltage, so that the loss of the battery in the charging process is minimized.
EXAMPLE III
A third embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the following charging method.
Acquiring the idle power of the elevator system on the same day and the busy power of the elevator system on the same day;
obtaining a first capacity of a battery according to a first algorithm based on the idle time power of the day and the busy time power of the day;
charging the battery so that the capacity of the battery is a first capacity;
detecting the residual capacity of the battery, and if the residual capacity is smaller than or equal to a second capacity, obtaining the second capacity by multiplying the first capacity by a preset correction coefficient;
the battery is charged so that the capacity of the battery is a third capacity.
Of course, the computer-readable storage medium provided in the embodiments of the present invention is not limited to implementing the charging method described above when the computer program stored thereon is executed, and may also implement the charging method provided in any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (9)

1. A management system for elevator system battery charging, comprising: the power failure emergency device, the battery charging management board and the battery;
the power failure emergency device is electrically connected with a mains supply and an elevator system and is used for emergency power supply of the elevator system when the mains supply fails, the power failure emergency device further comprises a charger, the power failure emergency device is electrically connected with the battery charging management board, the battery charging management board is electrically connected with the battery, the power failure emergency device is charged to the first capacity of the battery through the battery charging management board, the first capacity is obtained according to a first algorithm based on idle-time power in the same day and busy-time power in the same day in the elevator system, and a formula used by the first algorithm is as follows:
Figure FDA0002453026950000011
in the formula Q1Is a first capacity, P1Is the idle power of the day, P2Is the busy hour power of the day, T1Busy hour emergency time, T, for a set power failure emergency device2For the idle time of the set power failure emergency device, U is the electromotive force of the battery, K1A correction factor greater than 1;
the battery charging management board further comprises a coulometer for detecting the remaining capacity of the battery, the power failure emergency device is further configured to charge the battery to the first capacity when the remaining capacity is smaller than or equal to a second capacity of the battery, the second capacity is obtained by multiplying the first capacity by a preset correction coefficient, and a calculation formula of the second capacity is as follows:
Q2＝K2Q1
in the formula Q1Is of a first capacity, wherein Q2Is the second capacity, wherein K2Is a preset correction factor, where K2And K1The product of (d) is greater than 1.
2. The management system of claim 1, further comprising a power meter positioned between the utility power and the outage emergency device and configured to detect real-time power of the elevator system on a daily basis;
the battery charging management board is also used for calculating the idle power of the elevator system in the day and the busy power of the elevator system in the day according to the real-time power of the elevator system in a certain time before the day, including,
taking the average value of the real-time power in the time periods of 20:00-24:00 and 00:00-8:00 within 5 days before the current day as the idle time power of the current day,
taking 8 of 5 days before the day: the average of the real-time power over the 00-20: 00 time period is taken as the busy hour power of the day.
3. The management system of claim 2, wherein a third capacity is obtained according to a first algorithm using the off-time power of the day and the busy-time power of the day, and wherein the outage emergency device is further configured to charge the battery to the third capacity when the remaining capacity is less than or equal to a second capacity of the battery and the third capacity is greater than the first capacity.
4. The management system according to claim 1, 2 or 3, wherein the battery charging management board further comprises a temperature correction module and a battery aging correction module, wherein the temperature correction module is used for acquiring the charging working temperature of the battery and correcting the standard charging current and/or standard charging voltage of the charger according to the charging working temperature; the aging correction module is used for acquiring the service time of the battery and correcting the standard charging current and/or the standard charging voltage of the charger according to the service time.
5. The management system according to claim 1, 2 or 3, characterized in that the charge management system further comprises a battery capacity periodic correction module electrically connected to the battery charge management board for periodically determining an actual maximum capacity value of the battery when the real-time power of the elevator system is less than or equal to a preset threshold value.
6. A method for charging a battery of an elevator system using a management system for charging a battery of an elevator system according to any one of claims 1 to 5, comprising:
acquiring the idle power of the current day and the busy power of the current day in an elevator system;
obtaining a first capacity of a battery according to a first algorithm based on the idle-time power of the day and the busy-time power of the day, wherein the formula used by the first algorithm is as follows:
Figure FDA0002453026950000031
in the formula Q1Is a first capacity, P1Is the idle power of the day, P2Is the busy hour power of the day, T1Busy hour emergency time, T, for a set power failure emergency device2For the idle time of the set power failure emergency device, U is the electromotive force of the battery, K1A correction factor greater than 1;
charging the battery so that the capacity of the battery is a first capacity;
detecting the residual capacity of the battery, and if the residual capacity is smaller than or equal to a second capacity, obtaining the second capacity by multiplying the first capacity by a preset correction coefficient, wherein the calculation formula of the second capacity is as follows:
Q2＝K2Q1
in the formula Q1Is of a first capacity, wherein Q2Is the second capacity, wherein K2Is a preset correction factor, where K2And K1The product of (a) is greater than 1;
the method comprises the steps of obtaining set idle time power of the day and busy time power of the day, obtaining third capacity of a battery according to a first algorithm, detecting the remaining capacity of the battery, and charging the battery if the remaining capacity is smaller than or equal to second capacity and the third capacity is larger than the first capacity, so that the capacity of the battery is the third capacity.
7. The method of charging of claim 6 wherein the step of obtaining the idle power of the elevator system during the day and the busy power of the day comprises:
detecting the real-time power of the elevator system and acquiring the real-time power within a certain time before the current day;
determining idle time periods and busy time periods of each day according to the size distribution of the real-time power within the certain time;
calculating the real-time power average value in the idle time period, and taking the real-time power average value in the idle time period as the idle time power of the current day;
and calculating the real-time power average value in the busy hour time period, and taking the real-time power average value in the busy hour time period as the busy hour power of the day.
8. The charging method according to claim 6, wherein the step of charging the battery comprises:
acquiring the charging working temperature of the battery and the service time of the battery;
correcting the charging current and/or the charging voltage during charging according to the charging working temperature and the service time to obtain the corrected charging current and/or charging voltage;
and charging the battery by adopting the corrected charging current and/or charging voltage.
9. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the charging method according to any one of claims 6 to 8.
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