JP2009215023A - Life determination system of battery for emergency electric power source - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve life-determinating accuracy by using an optimum battery life estimation-determining method according to differences of conditions of respective elevators. <P>SOLUTION: As an operation button 19g is operated, a determination start instruction means 19f outputs a life determination start instruction to a measured data collection means 19a and a data comparison determination means 19c. The measured data collection means 19a collects a plurality of types of measured data about the emergency electric power source 16. The data comparison judgment means 19c executes life determination by comparing the measured data from the measured data collection means 19a relating to a data type selected by a comparison object data selection means 19e and determination reference data taken out from a determination reference data storing part 19b. A determination result display means 19d displays the determination result. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an emergency power supply battery life determination system.

  In the elevator, a power converter such as an inverter controls the hoisting machine by supplying power from a main power source (mainly commercial AC power source), and the car is moved up and down in the hoistway by the driving force of the hoisting machine. It has become. Accordingly, when a power outage accident occurs, the power supply from the main power supply is cut off, so that the operation of the elevator is stopped.

  However, in an ordinary elevator system, the emergency power supply battery works in this case, and the automatic landing function during a power failure moves the car to the nearest floor to rescue passengers and avoid confinement accidents. It has become. Therefore, the emergency power battery plays a very important role, and the emergency power battery must always be fully charged so that rescue operation is possible whenever a power failure occurs. I must.

  By the way, the emergency power supply battery is charged and stored with DC power obtained by converting AC power from a commercial AC power supply during normal operation. However, if a certain period of time elapses after the elevator is operated, sufficient charging cannot be performed due to aging, and the rescue operation cannot be performed when the life of the emergency power battery is completely exhausted. Therefore, it is necessary to predict and determine the lifetime of the emergency power supply battery and replace it with a new one before the lifetime is exhausted.

  Since it is difficult to accurately make a prediction judgment of this lifetime, previously, maintenance that replaces all batteries uniformly after a certain period of time (a period sufficiently shorter than the expected lifetime) has elapsed since the battery was installed. Processing was generally done. However, the maintenance process in which all the parts are uniformly replaced with new ones incurs an increase in maintenance costs, and recently, attempts have been made to make life prediction as accurately as possible.

  As conventional battery life prediction and determination methods, for example, techniques according to Patent Documents 1 and 2 are disclosed. Patent Document 1 calculates and integrates the number of discharges at the reference discharge capacity from the battery discharge current detection value for each rescue operation and compares the accumulated number of discharges with the set life number to determine the battery life arrival time. It is what.

Patent document 2 classifies the ambient temperature of the battery into a plurality of stages, and seeks to determine the battery life progression degree from the accumulated time for each section where the battery is exposed.
JP-A-5-139651 JP 2006-318528 A

  However, what battery life prediction method is actually suitable varies greatly depending on the individual conditions of the elevator. For example, the optimum method varies depending on the use of the elevator, the area where the elevator is installed, the size of the battery, the type of battery, etc. Furthermore, if there is no accumulation of actual values over a certain period of time, the optimum prediction method for that elevator is It is considered undefined.

  The present invention has been made in view of the above circumstances, and an emergency power source capable of improving the life judgment accuracy by using an optimum battery life prediction judgment method according to a difference in individual conditions of an elevator. The purpose of this is to provide a battery life evaluation system.

  As means for solving the above problems, the present invention collects a plurality of types of measurement data relating to an emergency power supply battery by means of a determination start command means for outputting a service life determination start command for an emergency power supply battery, and the life determination start command. Measurement data collection means, criteria data storage unit that stores multiple types of criteria data used when determining the life of emergency power batteries, and data types that are used as the basis for determining the life of emergency power batteries The comparison target data selection means to be selected and the data related to the data type selected by the comparison target data selection means from the measurement data collection means and the judgment reference data storage unit according to the life judgment start command are input, and Data comparison determination means for determining the life of the power battery and determination by the data comparison determination means Characterized by comprising a determination result displaying means for displaying the result, the.

  According to the present invention, it is possible to use the optimum battery life prediction determination method according to the difference of the individual conditions of the elevator, thereby improving the life determination accuracy.

  FIG. 1 is a configuration diagram of an emergency power battery life determination system according to an embodiment of the present invention. AC power from the three-phase commercial AC power source 1 that is the main power source is input to the rectifier circuit 3 via the contact 2. The AC power input to the rectifier circuit 3 is converted to DC power, smoothed by the smoothing capacitor 4, and output to the inverter device 5. The inverter device 5 converts this direct current power into alternating current power controlled by variable voltage and variable frequency, and supplies this to the hoisting machine 6.

  A rope 7 is wound around the hoisting machine 6, and a car 8 and a counterweight 9 are attached to one end side and the other end side of the rope 7, respectively. The operation of the hoisting machine 6 is controlled by the supply of AC power from the inverter device 5 so that the car 8 and the counterweight 9 are moved up and down in opposite directions in the hoistway by the driving force of the hoisting machine 6. It has become.

  Further, one end of a cable of the control power supply device 10 is connected between the contact 2 and the rectifier circuit 3, and power from the commercial AC power supply 1 is input to the control power supply device 10. The elevator control device 11 controls the operation of the elevator using the control power supply device 10 as a power source.

  Between the commercial AC power supply 1 and the contact 2, one end side of the input cable of the automatic landing device 12 at the time of power failure is connected. The automatic landing device 12 at the time of a power failure has a power failure detection circuit 13, and the other end of the input cable is connected to the power failure detection circuit 13. The power failure detection circuit 13 outputs a power failure detection signal to the elevator control device 11 when a power failure accident of the commercial AC power supply 1 is detected, and recovers power to the elevator control device 11 when power is restored from the power failure accident. A detection signal is output.

  The other end of the input cable is further connected to the charging circuit 15 via the contact 14. The charging circuit 15 charges the emergency power supply battery 16 based on the power input from the commercial AC power supply 1. The DC power stored in the emergency power supply battery 16 by this charging is converted to AC power of a predetermined voltage by the output circuit 17 and supplied to the rectifier circuit 3 via the contact 18.

  The measurement data used for determining the life of the emergency power battery 16 is collected by the battery life determination device 19, and the battery life determination device 19 determines the life of the emergency power battery 16 based on the collected measurement data. It has become.

  Here, the schematic operation of each component in FIG. 1 excluding the battery life determination device 19 will be described. First, during normal operation, the contacts 2 and 14 are on and the contact 18 is off. Therefore, AC power from the commercial AC power supply 1 is input to the rectifier circuit 3, and DC power rectified by the rectifier circuit 3 is input to the inverter device 5. The inverter device 5 converts the input DC power into AC power that has been subjected to variable voltage and variable frequency control, and supplies the AC power to the hoisting machine 6. The car 8 and the counterweight 9 are moved up and down in the hoistway by the driving force of the hoisting machine 6.

  Further, AC power from the commercial AC power supply 1 is also input to the control power supply device 10, and the elevator control device 11 performs an operation control operation of the elevator using the control power supply device 10 as a power source. Further, AC power from the commercial AC power supply 1 is also input to the charging circuit 15, and the charging circuit 15 performs a charging operation for the emergency power supply battery 16 based on this input.

  Assume that a blackout accident occurs during normal operation as described above, AC power from the commercial AC power supply 1 is cut off, and the car 8 stops between floors. Then, the power failure detection circuit 13 outputs a detection signal regarding the occurrence of the power failure accident to the elevator control device 11. At the same time, the power failure detection circuit 13 turns off the contacts 2 and 14 that have been turned on, and turns on the contact 18 that has been turned off. Therefore, the commercial AC power supply 1 is disconnected from the elevator system, and instead, the electric power stored in the emergency power supply battery 16 is supplied to the rectifier circuit 3 and the control power supply device 10 via the output circuit 17.

  As a result, as soon as the power failure detection signal from the power failure detection circuit 13 is input, the elevator control device 11 executes automatic landing control at the time of power failure, and moves the cars 8 that are stopped between the floors to the nearest floor. The passenger in the car 8 can be rescued outside the car.

  Even when the commercial AC power supply 1 is restored and the power failure detection circuit 13 detects power recovery during execution of the automatic landing control at the time of a power failure, the elevator control device 11 does not supply power from the emergency power supply battery 16. The automatic landing control at the time of power failure is continued and completed as it is. At this time, the power failure detection circuit 13 keeps the contact 2 in the off state. Therefore, the mixture of the power supplied from the commercial AC power supply 1 and the power supplied from the output circuit 17 is avoided.

  FIG. 2 is a block diagram showing an internal configuration of the battery life determination device 19 in FIG. As shown in this figure, the battery life determination device 19 includes a measurement data collection unit 19a, a determination reference data storage unit 19b, a data comparison determination unit 19c, a determination result display unit 19d, a comparison target data selection unit 19e, and a determination start command unit. 19f, an operation button 19g, and a driving request detection means 19h.

  The measurement data collection unit 19a collects a plurality of types of measurement data related to the emergency power supply battery 16 when the life determination start command is input from the determination start command unit 19f. Examples of these multiple types of measurement data include battery voltage, battery temperature, battery internal resistance, and battery voltage drop waveform.

  The determination reference data storage unit 19b stores a plurality of types of determination reference data used when determining the life of the emergency power supply battery 16, that is, data to be compared with a plurality of types of measurement data collected by the measurement data collection unit 19a. Is stored. These determination reference data are adopted based on predetermined calculations and past determination results, and are appropriately updated to optimum values.

  The data comparison / determination means 19c receives the measurement data from the measurement data collection means 19a and the determination reference data from the determination reference data storage unit 19b, and determines the life of the emergency power battery 16 based on the comparison of these data. It is. For example, when the data type is a battery voltage, it is determined that it is time to replace the battery when the measured voltage value after a lapse of a certain time from the start of charging is less than a certain percentage of the determination reference voltage value. Alternatively, when the data type is battery temperature, the time when the measured temperature from the temperature sensor attached to a predetermined location of the emergency power supply battery 16 exceeds the judgment reference temperature is accumulated, and the accumulated time exceeds the judgment reference time. It is determined whether or not it is time to replace the battery.

  However, the data comparison / determination means 19c does not necessarily compare the measurement data and the determination reference data for all data types, but only the data types selected by the comparison target data selection means 19e as the basis of the life determination. A comparison is to be made. The type of data to be selected by the comparison target data selection unit 19e can be determined manually by a maintenance worker or the like, but is determined based on a learning function as will be described later. It is also possible to set as follows.

  The determination result display means 19d displays the determination result by the data comparison determination means 19c. This determination result display means 19d has, for example, three kinds of LED lamps with different display colors, and messages such as “replacement required”, “replacement after a short time”, “replacement not required” are displayed on each LED lamp. It can be made to correspond. Alternatively, a small liquid crystal display screen may be provided instead of the LED lamp, and the above message may be directly displayed on the screen.

  The determination start command unit 19f outputs a life determination start command for the emergency power supply battery 16 to the measurement data collection unit 19a and the data comparison determination unit 19c. The measurement data collection means 19a starts collecting measurement data related to the emergency power supply battery 16 when this life determination start command is input. The data comparison / determination means 19c performs the life determination when a sufficient amount of data has been collected or when a sufficient amount of time has elapsed after inputting the life determination start command.

  The output of the life determination start command of the determination start command means 19f can be performed by operating the operation button 19g by a maintenance worker or the like. When the life start determination command is output, the determination start command unit 19f simultaneously switches the contact 14 from on to off, and causes the charging circuit 15 to stop the charging operation for the emergency power supply battery 16. .

  In addition, an operation request detection signal from the operation request detection unit 19h is input to the determination start command unit 19f. The case where a driving request is detected is, for example, a case where a hall call button is pressed or a hall call is automatically made by opening the entrance door in an elevator system linked to the security system. . When such an operation request detection signal is input, the determination start command unit 19f switches on the contact 14 that is turned off, and also instructs the measurement data collection unit 19a and the data comparison determination unit 19c to interrupt the life determination operation. Is output.

  Next, the operation of FIG. 2 will be described. It is assumed that the selection of the data type by the comparison target data selection unit 19e has been performed in advance. Now, when a maintenance worker who is performing maintenance work presses the operation button 19g, the determination start command unit 19f outputs a life determination start command to the measurement data collection unit 19a and the data comparison determination unit 19c, and the contact 14 is turned on. Switch off.

  When a life determination start command is input from the determination start command means 19f, the measurement data collection means 19a starts collecting measurement data and outputs the collected measurement data to the data comparison determination means 19c. The data comparison / determination means 19c compares the measurement data relating to the data type selected by the comparison target data selection means 19e out of the input measurement data with the determination reference data extracted from the determination reference data storage unit 19b, thereby determining the lifetime. Make a decision. The determination result display means 19d displays the determination result by the LED lamp or the liquid crystal display screen described above.

  According to the determination result displayed on the determination result display means 19d, the maintenance worker needs to be replaced because the emergency power supply battery 16 will soon reach the end of its life, or there is still a sufficient period until the end of the life. Therefore, information such as no need for replacement can be obtained immediately.

  In addition, it is assumed that the operation request detection unit 19h detects an operation request while the battery life determination device 19 is performing the operation of determining the life as described above while the elevator is stopped. Then, the determination start command unit 19f outputs an interruption command to the measurement data collection unit 19a and the data comparison determination unit 19c, and switches the contact 14 from off to on. The contact 14 is switched on in this way because it is preferable to always maintain the emergency power battery 16 in an optimal state during normal operation of the elevator.

  The data comparison / determination means 19c has an internal storage unit, and temporarily stores data up to that point when an interruption command is input. Then, after the car 8 arrives at the destination floor, it enters a door open standby state at the entrance floor, and when the operation of the elevator is stopped, the determination start command means 19f outputs a life determination start command again and the contact 14 is turned on. Switch off again. As a result, the measurement data collection unit 19a resumes the collection of measurement data, and the data comparison / determination unit 19c performs a determination operation using the stored data and the measurement data newly input from the measurement data collection unit 19a.

  According to the above-described emergency power source battery life determination system according to the present embodiment, the data comparison determination unit 19c is a comparison target data selection unit among the data input from the measurement data collection unit 19a and the determination reference data storage unit 19b. Since the battery life determination is performed using only data relating to the data type selected by 19e, an optimum battery life prediction determination method can be used according to the difference in the individual conditions of the elevator. The determination accuracy can be improved.

  When the data type selected by the comparison target data selection unit 19e is, for example, a voltage drop waveform, it is preferable to determine the life while a certain load is applied to the emergency power supply battery 16. In such a case, a detailed configuration is omitted in FIGS. 1 and 2, but the emergency power supply battery 16 is connected to an available load in the elevator control device 11 via the output circuit 17. It is possible.

  FIG. 3 is a block diagram showing a main configuration of another embodiment of the present invention. FIG. 3 differs from FIG. 2 in that a remote maintenance device 20 having a determination start timer means 20a and a determination result transmission means 20b, and a central monitoring device 21 having a determination result learning means 21a are added. For example, a determination reference data update unit 19i is added to the life determination unit 19, and a data importance level determination unit 19e1 is provided inside the comparison target data selection unit 19e. The remote maintenance device 20 is installed in the building where the elevator is installed, and the central monitoring device 21 is provided in the monitoring center of the elevator maintenance company. And the determination result transmission means 20b and the determination result learning means 21a are connected by the public line.

  The determination start timer means 20a is for setting in advance the timing at which the determination start command means 19f outputs the determination start command based on the timer function or the calendar function. Then, the determination start timer unit 20a instructs the determination start command unit 19f to output a determination start command when the set timing has come. Therefore, even if the maintenance worker does not manually operate the operation button 19g, it is possible to automatically perform the life determination of the emergency power battery 16 at a predetermined timing.

  Further, the data comparison / determination means 19c in the present embodiment outputs the determination result to the determination result display means 19d and also outputs it to the determination result transmission means 20b. The determination result transmission unit 20b transmits the input determination result to the determination result learning unit 21a via the public line.

  The determination result learning unit 21a learns the received determination result using a learning algorithm such as a fuzzy calculation method, a genetic algorithm method, or a self-organizing map method. Then, the determination result learning unit 21a transmits the learning result to the determination reference data update unit 19i. The criterion data update unit 19i updates the criterion data stored in the criterion data storage unit 19b to an optimum value based on the received learning result.

  Further, in the present embodiment, the comparison target data selection unit 19e inputs the learning result from the determination result learning unit 21a so that the optimum data type can be selected. Furthermore, the comparison target data selection means 19e of this embodiment has a data importance level determination means 19e1 inside, and when there are a plurality of selected data types, the data importance level is determined for these. Yes.

  When the data comparison determination unit 19c performs the life determination based on the comparison of a plurality of types of data, when the determination of the result that differs depending on the data type used is calculated, the data importance level determination unit 19e1 The determination result obtained by using the data type having the higher data importance degree is adopted and output.

  As described above, according to the embodiment of FIG. 3, the determination start instruction means 19f in the remote maintenance device 20 having the timer function or the calendar function can set in advance the timing at which the determination start instruction means 19f outputs the determination start instruction. Thus, even if the maintenance worker does not manually operate the operation button 19g, the life determination of the emergency power battery 16 can be performed reliably at a predetermined timing.

  In addition, the determination reference data update unit 19i can update the determination reference data stored in the determination reference data storage unit 19b to an optimum value by the determination result learning unit 21a in the central monitoring device 21.

  Furthermore, since the data importance determination means 19e1 is provided in the comparison target data selection means 19e and priorities regarding the data importance are given to a plurality of types of data, different determination results are derived depending on the data types. Adopts a determination result based on the data type having the higher data importance. Therefore, it is possible to carry out lifetime determination with improved accuracy and reliability.

  In the configuration shown in FIG. 3, the determination start timer means 20a is provided in the remote maintenance device 20, and the determination result learning means 21a is provided in the central monitoring device 21, but either or both of these are provided. A configuration provided in the battery life determination device 19 is also possible.

  Further, in FIG. 3, in order to avoid complication of the drawing, the learning result data from the determination result learning unit 21 a is illustrated to be directly transmitted to the determination reference data update unit 19 i and the data importance level determination unit 19 e 1. However, in practice, it is preferably transmitted via the remote maintenance device 20.

The block diagram of the lifetime determination system of the battery for emergency power supplies which concerns on embodiment of this invention. The block diagram which shows the internal structure of the battery life determination apparatus 19 in FIG. The block diagram which shows the principal part structure of other embodiment of this invention.

Explanation of symbols

1: Commercial AC power supply 2: Contact point 3: Rectification circuit 4: Smoothing capacitor 5: Inverter device 6: Hoisting machine 7: Rope 8: Car 9: Counter weight 10: Control power supply device 11: Elevator control device 12: During power failure Automatic landing device 13: Power failure detection circuit 14: Contact 15: Charging circuit 16: Emergency battery 17: Output circuit 18: Contact 19: Battery life determination device 19a: Measurement data collection means 19b: Determination reference data storage unit 19c: Data comparison / determination means 19d: Determination result display means 19e: Comparison target data selection means 19e1: Data importance determination means 19f: Determination start command means 19g: Operation button 19h: Driving request detection means 19i: Determination reference data update means 20: Remote Maintenance device 20a: Determination start timer unit 20b: Determination result transmission unit 21: Central monitoring device 21a: Determination result Learning means

Claims (8)

A determination start command means for outputting a life determination start command for the emergency power supply battery;
Measurement data collecting means for collecting a plurality of types of measurement data related to the battery for emergency power supply according to the life determination start command;
A criterion data storage unit storing a plurality of types of criterion data used when determining the life of the emergency power battery; and
Comparison target data selection means for selecting a data type as a basis for determining the life of the battery for emergency power supply,
Data relating to the data type selected by the comparison target data selection means is input from the measurement data collection means and the judgment reference data storage unit in response to the life judgment start command, and the life judgment of the emergency power supply battery is made based on a comparison of these data Data comparison judgment means for performing
A determination result display means for displaying a determination result by the data comparison determination means;
A battery life determination system for emergency power supply, characterized by comprising: The data type used as the basis for determining the life of the emergency power supply battery includes at least one of battery voltage, battery temperature, battery internal resistance, and battery voltage drop waveform.
The life determination system for an emergency power supply battery according to claim 1. The life determination process for the emergency power supply battery is performed while the elevator is stopped. During the operation, the battery charging circuit is disconnected from the elevator main power source, and when an elevator operation request is generated, the life determination process is performed. To interrupt and reconnect the battery charging circuit to the elevator mains power,
The life determination system for an emergency power supply battery according to claim 1. A remote maintenance device that transmits the determination result by the data comparison determination means to the central monitoring device of the elevator monitoring center,
The life determination system for an emergency power supply battery according to claim 1. A determination result learning means for learning a determination result of the data comparison determination means based on a learning algorithm;
Determination criterion data updating means for updating the determination reference data stored in the determination reference data storage unit based on the learning result of the determination result learning means;
The life determination system for an emergency power supply battery according to claim 1, comprising: The comparison target data selection means selects a data type as a basis for determining the life of the emergency power battery based on the learning result of the determination result learning means.
The life determination system for an emergency power supply battery according to claim 5. The comparison target data selection means has data importance determination means for determining data importance based on the learning result of the determination result learning means when there are a plurality of selected data types,
When the data comparison determination means performs a life determination based on a comparison of a plurality of types of data and a different determination is calculated depending on the data type, the data importance determined by the data importance determination means is higher. Output the judgment result obtained using the data type.
The life determination system for an emergency power supply battery according to claim 5. A timing at which the determination start instruction means outputs a determination start instruction is preset, and a determination start timer means for instructing the determination start instruction means to output a determination start instruction when the set timing has arrived. ,
The life determination system for an emergency power supply battery according to claim 1.

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