JP6593769B2 - Storage battery remaining life estimation method, storage battery check date determination method, storage battery remaining life estimation device, and storage battery remaining life estimation system - Google Patents

Description

  The present invention relates to a storage battery remaining life estimation method, a storage battery check date determination method, a storage battery remaining life estimation apparatus, and a storage battery remaining life estimation system that estimate the remaining life of a storage battery.

  Storage batteries such as control valve type stationary lead-acid batteries are used for DC power supply equipment and uninterruptible power supply equipment installed in communication machinery rooms, communication station buildings, storage battery rooms, switchboard rooms in substations, power stations, etc. Inspection work is regularly conducted to confirm the external appearance, voltage value, internal resistance value, etc. of the storage battery.

  The inspection cycle of the storage battery is usually set (defined) uniformly, for example, inspecting once when six years have elapsed from the start of use, and then inspecting every year thereafter. However, storage batteries such as control valve type stationary lead-acid batteries have a property that their lifespan becomes shorter as the temperature rises, and depending on the installation environment of the storage battery, there is a problem that the storage battery becomes lifespan without waiting for the inspection date and problems occur. is there.

  In order to solve this problem, several techniques for observing the state of the storage battery after the start of use of the storage battery and estimating the lifetime have been proposed. For example, a method for predicting the life of a storage battery that measures the temperature of the storage battery and calculates the remaining life of the storage battery using the latest measured temperature and the cumulative average temperature after the start of use of the storage battery has been proposed (for example, Patent Document 1). In addition, a storage battery monitoring device has been proposed that constantly measures the internal resistance value and temperature of a storage battery, determines the deterioration state of the storage battery from these measured values, and calculates the remaining life of the storage battery (see, for example, Patent Document 2). ).

JP 9-2111091 A JP 2004-119228 A

  In the storage battery life prediction method described in Patent Document 1, the remaining life is estimated using only the temperature, but it is known that the remaining life (remaining capacity) of the storage battery has a strong correlation with the internal resistance value of the storage battery. In the method of estimating the remaining life of the storage battery using only the temperature, it is not possible to cope with the individual difference of the storage battery, and there is a limit in accuracy.

  In the storage battery monitoring device described in Patent Document 2, the internal resistance value and the temperature are constantly measured, but it is necessary to always install an expensive measuring instrument for measuring the internal resistance value for each storage battery, and in consideration of the installation cost, etc. Not right.

  Furthermore, although the optimization of the inspection cycle of a storage battery is calculated | required, patent document 1, 2 does not touch on this subject at all.

  An object of the present invention is to provide a storage battery remaining life estimation method, a storage battery check date determination method, a storage battery remaining life estimation device, and a storage battery remaining life estimation system that can accurately estimate the remaining life of a storage battery and can be operated at low cost. It is to be.

The present invention is a storage battery remaining life estimation method for estimating the remaining life, which is the remaining time until the life of the storage battery whose life varies with temperature, and presets a life guide resistance value that is a guide for the life of the storage battery, The temperature from the start of use of the storage battery is acquired at regular intervals, the average temperature is calculated using the temperature acquired from the start of use of the storage battery to the time of estimating the remaining life, and the remaining life The internal resistance value of the storage battery is measured at the time of estimating, and the estimated value of the estimated remaining life until the measured internal resistance value and the internal resistance value of the storage battery reach the life guideline resistance value can be calculated. resistance value at the average temperature - and remaining service life function, in the guideline to calculate a predicted value of the remaining service life, calculated the predicted value 蓄 remaining battery life estimate how to estimate the remaining life based on using a temperature and Above A temperature-life function representing a relationship with the battery life and a life resistance value that is the life of the storage battery are set in advance, an initial resistance value at the start of use of the storage battery is measured in advance, and the resistance-residual The life function is created based on the initial resistance value, the temperature-life function, the life resistance value, and the life guide resistance value, and the temperature-life function is a function specific to the type of the storage battery. In the method for estimating the remaining battery life , the life guide resistance value is a caution resistance value for calling attention before the life resistance value or the internal resistance value of the storage battery reaches the life resistance value. is there.

  In the storage battery remaining life estimation method of the present invention, the resistance value-residual life function is created after calculating the average temperature, and only the resistance value-residual life function at the average temperature is created. To do.

  In the storage battery remaining life estimation method of the present invention, the resistance value-residual life function is created before calculating the average temperature, and the resistance value-residual life function is created for each temperature. .

  The storage battery remaining life estimation method of the present invention is further characterized in that a safety factor that is a value of 1 or less is set in advance, and a value obtained by multiplying the predicted value by the safety factor is estimated as the remaining life.

  Further, the present invention is a storage battery check date determination method, wherein the remaining battery life is estimated by the storage battery remaining life estimation method, and a check date of the storage battery is determined based on the estimated remaining life.

The present invention is also a storage battery remaining life estimation device for estimating a remaining life, which is a remaining time until the life of a storage battery whose life varies with temperature, and is measured by a temperature measuring means for measuring temperature and the temperature measuring means. A temperature acquisition means for acquiring a predetermined temperature every predetermined time, an average temperature calculation means for calculating an average temperature using the temperature acquired up to the time of estimating the remaining life, a temperature and a life of the storage battery, A temperature-life function representing the relationship of: a life resistance value that is the life of the storage battery, a life guide resistance value that is a guide for the life of the storage battery, an initial resistance value measured at the start of use of the storage battery, The remaining life function creating means for creating a resistance value-residual life function which is a function depending on temperature capable of calculating a predicted value of a guide remaining life until the internal resistance value of the storage battery reaches the life guide resistance value based on And before A predicted value calculating means for calculating a predicted value of the reference remaining life using the internal resistance value of the storage battery measured at the time of estimating the remaining life and the resistance value-remaining life function at the average temperature; wherein the remaining service life estimation means for estimating the remaining service life based on the predicted value, Bei example, said temperature - life function is an inherent function of the type of the battery, the life measure resistance, the lifetime resistance Or it is a storage battery remaining life estimation apparatus characterized by being a caution resistance value for calling attention before the internal resistance value of a storage battery reaches a lifetime resistance value .

Further, the present invention is a storage battery remaining life estimation system that estimates a remaining life that is the remaining time until the life of a storage battery whose life varies with temperature, and obtains the temperature at regular intervals to estimate the remaining life An average temperature calculation device that calculates an average temperature using the temperatures acquired until and the remaining temperature estimation that acquires the average temperature from the average temperature calculation device and estimates the remaining life based on the acquired average temperature The average temperature calculating device includes a temperature measuring unit for measuring temperature, a temperature acquiring unit for acquiring the temperature measured by the temperature measuring unit at regular intervals, and a time point for estimating the remaining life Average temperature calculation means for calculating an average temperature using the temperature acquired during the period, wherein the remaining life estimation device is a function representing a relationship between the temperature and the life of the storage battery The internal resistance value of the storage battery based on the life resistance value that is the life of the storage battery, the life guide resistance value that is a guide for the life of the storage battery, and the initial resistance value measured at the start of use of the storage battery From the average temperature calculation device, a remaining life function creating means for creating a resistance value-residual life function that is a function dependent on a temperature capable of calculating a predicted value of a standard remaining life until the life standard resistance value is reached. Using the average temperature acquisition means for acquiring the average temperature, the internal resistance value of the storage battery measured at the time of estimating the remaining life, and the resistance value-remaining life function at the average temperature, the reference remaining life A predicted value calculating means for calculating a predicted value of the battery , and a remaining life estimating means for estimating the remaining life based on the predicted value, wherein the temperature-life function is a function specific to the type of the storage battery , The lifetime Resistance, a note resistance value for performing alert before the internal resistance value of the lifetime resistance or accumulator reaches a lifetime resistance, the residual by using the average temperature of said average temperature calculation device has calculated It is a storage battery remaining life estimation system characterized by a life estimation apparatus estimating the said remaining life.

The present invention provides a storage battery remaining life estimation method, a storage battery check date determination method, a storage battery remaining life estimation device, and a storage battery remaining life estimation system that can accurately estimate the remaining life of a storage battery and can be operated at low cost. Can

  In addition, as the temperature used when estimating the remaining life, the average temperature calculated using the temperature acquired from the start of use of the storage battery is used, so it is not affected by the instantaneous temperature when measuring the internal resistance value of the storage battery. The remaining life can be estimated, and it is not necessary to closely monitor the internal resistance value of the storage battery and the temperature when the internal resistance value is measured. This makes it possible to accurately estimate the remaining life of the storage battery without constantly measuring the temperature and the internal resistance value, thereby realizing cost reduction.

It is a figure for demonstrating the storage battery remaining life estimation method (storage battery check day determination method) of 1st Embodiment of this invention, Comprising: Formula when a horizontal axis is elapsed time Y 'and a vertical axis | shaft is the internal resistance value R. It is a graph which shows an example of (4). It is a flowchart which shows the procedure of the storage battery remaining life estimation method (storage battery check date determination method) of 1st Embodiment of this invention. It is a block diagram of the storage battery remaining life estimation apparatus (storage battery check date determination apparatus) 2 of 2nd Embodiment of this invention. It is a block diagram of the storage battery remaining life estimation system (storage battery check date determination system) 3 of 3rd Embodiment of this invention.

  The storage battery remaining life estimation method (storage battery check date determination method) according to the first embodiment of the present invention is a method for estimating the remaining life, which is the remaining time until the life of the storage battery whose life varies depending on the temperature. The resistance value and the resistance value-remaining life function, which is a function that depends on the temperature that can calculate the predicted value of the remaining time until the internal resistance value of the storage battery reaches an arbitrary value, and the average obtained from the start of use of the storage battery The remaining life of the storage battery is estimated using the temperature. An appropriate inspection date for the storage battery is determined based on the estimated remaining life. In addition, estimation of the remaining life of a storage battery and determination of a check date (next time) are normally performed at the time of check of a storage battery.

  The internal resistance value of the storage battery used for estimation of the remaining life of the storage battery includes an initial resistance value, an estimated resistance value, a life resistance value, a caution resistance value, and a life guide resistance value.

  The initial resistance value is an actual measurement value of the internal resistance value at the start of use of the storage battery, and is a unique value for each individual storage battery.

  The estimated resistance value is an actually measured value of the internal resistance value at the time of estimating the remaining life of the storage battery (during inspection or the like), and is a value specific to each individual storage battery, and varies depending on the measurement time. Usually, the internal resistance value of a storage battery increases as it deteriorates (approaches its life).

  The life resistance value is an internal resistance value set by a manufacturer or a user as the life of the storage battery, and is set for each type of storage battery. The time when the internal resistance value of the storage battery reaches the life resistance value is regarded as the life of the storage battery.

  The caution resistance value is an internal resistance value set as an operational guideline for calling attention before the internal resistance value of the storage battery reaches the life resistance value. The caution resistance value is set for each type of storage battery and is smaller than the life resistance value.

  The life guide resistance value is a control value of the internal resistance value set by the manufacturer or user as a guide for the life of the storage battery. According to the operation method of the storage battery, at least one of the life resistance value and the caution resistance value is used. One of these values is used as a life guide resistance value. The use of any value other than the life resistance value and the caution resistance value as the life guide resistance value is not denied. Usually, when the internal resistance value of the storage battery measured at the time of inspection of the storage battery (at the time of estimating the remaining life) becomes equal to or greater than the life guideline resistance value, an alarm is notified to the administrator, and replacement with a new storage battery is performed.

  The resistance value-remaining life function used for estimating the remaining life of the storage battery is a function depending on the temperature at which the predicted value of the remaining time until the internal resistance value of the storage battery reaches an arbitrary value can be calculated. If the value is the life resistance value, it is possible to calculate the predicted value of the remaining life of the storage battery.If any value is the life guide resistance value, the remaining time until the internal resistance value of the storage battery reaches the life guide resistance value is calculated. A predicted value of a certain reference remaining life can be calculated.

  The resistance value-residual life function is created from the initial resistance value, the life resistance value, the life guide resistance value, and the temperature-life function.

The temperature-life function is a function specific to the type of storage battery that represents the relationship between the temperature and the life of the storage battery, as determined by the manufacturer. For example, in the case of a control valve type stationary lead storage battery, It is. The temperature-life function is not limited to the equation (1).
Y _T = a × 2 ^{(25−T) / 10} Expression (1)
Here, T is the temperature (° C.), a is the life (year) of the storage battery at 25 ° C., and Y _T is the life (year) of the storage battery at temperature T. Note that a is a constant specific to each type of storage battery.

  According to the temperature-life function represented by the equation (1), the life of the storage battery is shortened as the temperature rises.

Next, as an example, a method for creating a resistance value-remaining life function for calculating a predicted value of a reference remaining life that is the remaining time until the internal resistance value of the storage battery reaches the life guide resistance value will be described. As the storage battery deteriorates, the internal resistance value increases. Here, assuming that the internal resistance value R (mΩ) of the storage battery increases linearly in proportion to the elapsed time, and the resistance value (initial resistance value) at the start of use of the storage battery is R _initial (mΩ), The elapsed time Y ′ (year) from the start of use can be expressed by equation (2).
Y ′ = b × (RR _{initial stage} ) (2)
Here, b is a constant.

Constant b in the equation (2), summary by substituting lifetime Y _T of the storage battery at a temperature T which is calculated life the resistance value R _lifetime internal resistance value R, the elapsed time Y 'from equation (1), wherein It can be obtained as in (3).
b = Y _T / (R _life- R _initial ) (3)

Substituting equation (3) into equation (2), the initial resistance value R _initial, life resistance R _lifetime, with the lifetime Y _T of the storage battery at a temperature T which is calculated from equation (1), in the internal resistance value R Equation (4) for obtaining the elapsed time Y ′ from the start of use of the storage battery is obtained.
Y ′ = (R−R _initial ) / (R _life− R _initial ) × Y _T (4)

  FIG. 1 is a diagram for explaining a storage battery remaining life estimation method (storage battery check date determination method) according to the first embodiment of the present invention, where the horizontal axis represents elapsed time Y ′ and the vertical axis represents internal resistance value R. It is a graph which shows an example of Formula (4) when doing. In FIG. 1, the initial resistance value is 0.2 mΩ, the life resistance value is 1.0 mΩ, the caution resistance value is 0.85 mΩ, the constant “a” in Equation (1) is 15 years, and the temperature T is 25 ° C., 30 ° C., 35 Three graphs at ° C are shown. Using this graph, the elapsed time Y ′ from the start of use of the storage battery at the internal resistance value R at the temperature T and the internal resistance value R are life guideline resistance values (life resistance value, caution resistance value, or arbitrary value) It is also possible to obtain the elapsed time in the graph. It is also possible to obtain a predicted value of the reference remaining life of the storage battery by subtracting the elapsed time Y ′ obtained on the graph from the elapsed time that is the life guide resistance value obtained on the graph.

The estimated value of the reference remaining life, which is the remaining time until the internal resistance value of the storage battery reaches the reference life resistance value, can be expressed as in equation (5) using the elapsed time Y ′ from the start of use of the storage battery. it can.
Y ″ = Y ′ _{R = Life guide resistance value−} Y ′ (5)
Here, Y ′ _{R = the life guide resistance value} is obtained by substituting the life guide resistance value into the internal resistance value R in the equation (4), and the storage battery's internal resistance value becomes the life guide resistance value. This is the elapsed time (year) from the start of use, and Y ″ is the estimated remaining life (year) that is the remaining time until the internal resistance value of the storage battery reaches the estimated life resistance value.

By substituting equation (4) into equation (5), equation (6) is obtained.
Y ″ = (R _{life guideline−} R) / (R _life− R _initial ) × Y _T (6)
Here, the R _{life guideline} is the life guideline resistance value (mΩ) of the storage battery.

Equation (6) is a resistance value-remaining life function at the temperature T. When the estimated resistance value is substituted for the internal resistance value R, the internal resistance value of the storage battery is changed to the reference life resistance value when estimating the remaining life of the storage battery. The estimated value of the estimated remaining life that is the remaining time to reach can be obtained. In Equation (6), by setting the R _{life guideline} to an arbitrary value, it is also possible to calculate a predicted value of the remaining time until the internal resistance value of the storage battery reaches an arbitrary value.

  Next, a procedure for estimating the remaining life of the storage battery using the storage battery remaining life estimation method of the present embodiment will be described. FIG. 2 is a flowchart showing the procedure of the storage battery remaining life estimation method (storage battery check date determination method) according to the first embodiment of the present invention. In the storage battery remaining life estimation method of the present embodiment, a temperature-life function, a life resistance value, and a life guide resistance value are set in advance before the start of use of the storage battery.

  At the start of use of the storage battery, the internal resistance value (initial resistance value) of the storage battery is measured (step S1). Also, the temperature is measured and acquired at regular intervals from the start of use of the storage battery (step S2).

  After starting the use of the storage battery, at the time when the remaining life of the storage battery is estimated, the internal resistance value (estimated resistance value) of the storage battery is measured (step S3). Moreover, an average temperature is calculated using the temperature acquired for every fixed time from the use start time of the storage battery (step S4). Then, a resistance value-residual life function at the calculated average temperature is created (step S5).

  The average temperature is obtained, for example, by dividing a total value of temperatures acquired at regular intervals from the start of use of the storage battery by the number of acquisitions. The average temperature may be calculated every time the temperature is acquired.

  The resistance value-residual life function can be created if there is at least a temperature-life function, life resistance value, life guide resistance value, and initial resistance value. After calculating the average temperature, the resistance at the calculated average temperature can be created. Only the value-residual life function may be created, or the resistance value-residual life function for each temperature may be created in advance after measuring the initial resistance value and before calculating the average temperature. When creating a resistance value-remaining life function for each temperature in advance, for example, a resistance value-remaining life function may be created every 1 ° C., or a resistance value-remaining life function may be created every 5 ° C. It is only necessary to use a resistance value-residual life function at a temperature closest to the calculated average temperature.

  After measuring the estimated resistance value, calculating the average temperature, and creating the resistance value-remaining life function, substitute the estimated resistance value into the calculated resistance value-remaining life function at the calculated average temperature, Is calculated (step S6). A value obtained by multiplying the calculated predicted value by a preset safety factor is estimated as the remaining life (step S7). The safety factor is normally set to a value of 1 or less, and can be set to an optimal value as appropriate according to the operation method of the storage battery.

  Then, the next inspection date of the storage battery is determined based on the estimated remaining life (step S8). The inspection date may be any date that is earlier than at least the date when the estimated remaining life is reached, and may be an optimal date as appropriate according to the operation method of the storage battery.

  After determining the next inspection date, the temperature is continuously acquired at regular intervals (step S2). Then, on the next inspection date of the storage battery, the estimated resistance value is measured (step S3), the average temperature is calculated (step S4), and the remaining life is estimated using the resistance value-residual life function at the calculated average temperature. Determine the next inspection date. Normally, the remaining battery life is reached and the remaining life is estimated and the next inspection date is repeated until the battery is replaced with a new one. The same applies to the storage battery remaining life estimation device 2 of the second embodiment, which will be described later, and the storage battery remaining life estimation system 3 of the third embodiment.

  As described above, the storage battery remaining life estimation method of the present embodiment includes a temperature-life function specific to each type of storage battery, a life resistance value and life guide resistance value that are set values, and an initial resistance value that is an actual measurement value. Estimate the remaining life of the storage battery from the measured internal resistance value (estimated resistance value) and the average temperature using the resistance value-remaining life function that reflects the individual differences of the storage battery created based on Therefore, the remaining life of the storage battery can be accurately estimated.

  In addition, as the temperature used when estimating the remaining life, the average temperature calculated using the temperature obtained from the start of use of the storage battery is used, so it depends on the instantaneous temperature when measuring the estimated resistance value. Therefore, the remaining life can be estimated, and it is not necessary to closely monitor the internal resistance value of the storage battery and the temperature when the internal resistance value is measured. As a result, the remaining life of the storage battery can be accurately estimated even manually, without always measuring the temperature and the internal resistance value, and the cost can be reduced.

  In addition, if a measuring instrument for measuring the internal resistance value of the storage battery is permanently installed for each storage battery, the number of measuring instruments will be enormous and the measuring instrument will be incorporated into the equipment, so a great deal of labor is required for calibration and management of the measuring instrument. Will be necessary. On the other hand, in the storage battery remaining life estimation method of the present embodiment, there is no need to permanently install a measuring instrument for measuring the internal resistance value of the storage battery in the storage battery, so the calibration of the measuring instrument is easy, and the measurement quality is reduced with little effort. It can be ensured, and the operation cost can be reduced.

  Moreover, according to the storage battery remaining life estimation method of this embodiment, since the remaining life of a storage battery can be estimated with sufficient precision, the appropriate inspection date of a storage battery can be set. For those with early deterioration of the storage battery, it is possible to prevent power outages due to storage battery malfunctions by setting the next inspection date early. The inspection cost can be reduced by setting the inspection date later.

  In addition, in the method for estimating the remaining battery life of the present embodiment, the average temperature from the start of use of the storage battery can be grasped, so the life of the storage battery can be extended by evaluating and improving the installation environment of the storage battery from the average temperature. Is also possible.

  FIG. 3 is a configuration diagram of the storage battery remaining life estimation device (storage battery check date determination device) 2 according to the second embodiment of the present invention. The storage battery remaining life estimation device (storage battery check date determination device) 2 of the present embodiment uses a remaining battery life that is the remaining time until the life of a plurality of storage batteries 92 installed in the storage battery panel 91 at the time of inspection of the storage battery 92 or the like. It is an apparatus that estimates every 92 and determines the next inspection date for each storage battery 92, and is installed in the storage battery panel 91 or close to the storage battery panel 91.

  A plurality of storage batteries 92 are installed in the storage battery panel 91, but since each storage battery 92 has a different timing for replacement after the operation of the storage battery panel 91, the elapsed time from the start of use is different for each storage battery. Is different. For this reason, the remaining life of the storage battery 92 is estimated for each individual storage battery 92.

  In the storage battery remaining life estimation device 2 of the present embodiment, the temperature used for calculating the average temperature of the storage battery 92 is the temperature measured on the surface of one storage battery 92 in all the storage batteries 92 as described later. The internal resistance value of 92 (initial resistance value and estimated resistance value) and the integrated value of the temperature per unit time used for calculating the average temperature, the elapsed time, or the number of times the temperature is acquired are actually measured for each individual storage battery 92. Calculated, timed or counted.

  In addition, the types of storage batteries 92 installed in the storage battery panel 91 may be different. In this case, when creating the resistance value-remaining life function, the temperature-life function, life resistance value, Caution Use resistance value and life guide resistance.

  The storage battery remaining life estimation device 2 includes a temperature sensor 11 that is a temperature measuring unit that is attached to the storage battery 92 and measures temperature, a touch panel 12 that is installed in front of the storage battery panel 91 and displays information and inputs data, and a storage battery. The counter 13 which is an elapsed time measuring means for measuring the elapsed time from the use start time of 92, the average temperature calculation device 14 which obtains the temperature from the temperature sensor 11 at regular intervals and calculates the average temperature, and the deterioration of the storage battery 92 A calculation control device 15 that performs state determination, estimation of the remaining life of the storage battery 92, and the like, and a communication device 16 that notifies an administrator or the like when the storage battery 92 is deteriorated, the temperature acquired from the temperature sensor 11, and The remaining life of each storage battery 92 is estimated using the internal resistance value of the storage battery 92 input from the touch panel 12, and an appropriate point for each storage battery 92 is determined based on the estimated remaining life. To determine the day.

  Note that the touch panel 12, the counter 13, the average temperature calculation device 14, the communication device 16, and the arithmetic control device 15 are configured to be able to transmit and receive signals and data to and from each other.

  The temperature sensor 11 is a known temperature sensor that detects a temperature, converts the voltage into a voltage, and outputs the voltage. The temperature sensor 11 is attached to the surface of one storage battery 92 in the storage battery panel 91 and constantly measures the temperature. The temperature sensor 11 is connected to the temperature acquisition means 41 of the average temperature calculation device 14 via the cable 21.

  In the storage battery remaining life estimation apparatus 2 of the present embodiment, the temperature measured for calculating the average temperature is the temperature measured on the surface of one storage battery 92 in all the storage batteries 92. In addition, the temperature sensor 11 can be attached to all the storage batteries 92 in the storage battery panel 91, and the temperature measured for every storage battery 92 can also be acquired. The temperature sensor 11 may be fixed to the storage battery panel 91 instead of the surface of the storage battery 92 in order to measure the ambient temperature of the storage battery 92. The attachment location and the number of attachments of the temperature sensor 11 may be determined in consideration of temperature deviation, installation cost, operation cost, and the like depending on the installation location of the storage battery panel 91 and the storage battery 92.

  The touch panel 12 is a known touch panel that serves as both a display unit and an input unit, and is connected to the input / output unit 51 of the arithmetic control device 15 via the cable 22. The touch panel 12 displays information such as the average temperature for each storage battery 92, the elapsed time from the start of use, the estimated remaining life, the inspection date, and the like, and the use start date and internal resistance for each storage battery 92 by the operator's operation. A value or the like is input to the arithmetic and control unit 15.

  The counter 13 measures the elapsed time from the start of use of the storage battery 92 for each storage battery 92. The unit time counted by the counter 13 is preferably equal to or less than the interval at which the average temperature calculation device 14 acquires the temperature from the temperature sensor 11.

  The average temperature calculation device 14 includes a temperature acquisition unit 41 that acquires the temperature measured by the temperature sensor 11 at regular intervals, and an average temperature calculation unit 42 that calculates an average temperature from the start of use for each storage battery 92. .

  The temperature acquisition means 41 includes a known A / D converter and the like, and acquires the voltage output by the temperature sensor 11 according to the temperature at regular intervals by converting it into digital data. The interval at which the temperature acquisition unit 41 acquires the temperature is not limited to a specific interval, and can be set to an optimal interval as appropriate.

  The average temperature calculation unit 42 calculates the average temperature for each storage battery 92 using the temperature acquired by the temperature acquisition unit 41. Specifically, an integrated value per unit time of the temperature acquired by the temperature acquisition means 41 from the use start time for each storage battery 92 is calculated, and the calculated integrated value is elapsed time measured for each storage battery 92 by the counter 13. Divide by to calculate the average temperature. Even if the total value of the temperatures acquired by the temperature acquisition unit 41 from the start of use is calculated for each storage battery 92, and the value obtained by dividing the calculated total value by the number of times the temperature is acquired for each storage battery 92 is calculated as the average temperature. In this case, the storage battery remaining life estimation device 2 may not include the counter 13.

  The calculation of the average temperature by the average temperature calculation unit 42 may be performed for each storage battery 92 every time the temperature is acquired by the temperature acquisition unit 41, or may be performed when the remaining life of the storage battery 92 is estimated. When calculating the average temperature when estimating the remaining life of the storage battery 92, the operator inputs the elapsed time and the time when the remaining life is estimated from the touch panel 12, and calculates the average temperature based on the input value. In this case, the storage battery remaining life estimation device 2 may not include the counter 13.

  The arithmetic and control unit 15 includes an input / output unit 51 that inputs / outputs data to / from peripheral devices, a storage unit 52 that can store data, and a storage that stores data input from the input / output unit 51 and the like in the storage unit 52. Means 53; deterioration state determining means 54 for determining the deterioration state of the storage battery 92; remaining life function creating means 55 for creating a resistance value-remaining life function; and a predicted value for calculating a predicted value of the reference remaining life of the storage battery 92. A calculating means 56; a remaining life estimating means 57 for estimating the calculated predicted value multiplied by a safety factor as the remaining life of the storage battery 92; and an inspection date determining means for determining an inspection date for the storage battery 92 based on the estimated remaining life 58 and data transmission means 59 for creating and transmitting data to be output to the peripheral device.

  The input / output means 51 is connected to the peripheral device and inputs / outputs data to / from the peripheral device. As an example of the peripheral device, in addition to the touch panel 12, an input device (not shown) such as a keyboard and a mouse, an output device such as a printer and a display, a communication device such as a router, a storage device such as a USB memory, a personal computer and a server computer Etc. The input / output means 51 can be configured to be able to input / output data to / from an optimal peripheral device as appropriate according to the usage method of the storage battery remaining life estimation device 2 and the like. The connection method between the input / output means 51 and the peripheral device may be wired or wireless.

  As the storage means 52, for example, a known hard disk drive or semiconductor memory capable of storing digital data can be used. The data stored in the storage means 52 includes the temperature-life function, life resistance value, caution resistance value, life guide resistance value, initial resistance value, estimated resistance value, use start date for each type of storage battery 92 or for each solid. There is a date of measurement of the estimated resistance value. The data stored in the storage means 52 is not limited to this. For example, the elapsed time counted by the counter 13, the temperature for every fixed time acquired by the average temperature calculation device 14, the calculated average temperature, communication Data such as an alarm history notified by the device 16 is stored as necessary.

  The storage unit 53 stores data input from the touch panel 12, other peripheral devices, the counter 13, the average temperature calculation device 14, the communication device 16, and the like in the storage unit 52.

  The deterioration state determining means 54 is a life guideline in which the internal resistance value (estimated resistance value) of the storage battery 92 measured and inputted when the remaining life of the storage battery 92 is estimated is an internal resistance value set as a guideline for the life of the storage battery 92. It is determined for each storage battery 92 whether or not the resistance value has been reached. When the input internal resistance value has reached the life guideline resistance value, a warning is displayed on the touch panel 12 and a warning is notified to the administrator or the like via the communication device 16. Usually, when the internal resistance value of the storage battery 92 measured at the time of inspection of the storage battery 92 (when the remaining life is estimated) becomes equal to or greater than the life guideline resistance value, an alarm is notified to the administrator, and replacement with a new storage battery 92 is possible. Done.

  When estimating the remaining life of the storage battery 92, the remaining life function creating means 55 uses the temperature-life function, the life resistance value, the life guide resistance value, and the initial resistance value to determine the internal resistance value of the storage battery 92. A resistance value-residual life function, which is a function depending on the temperature at which a predicted value of a standard remaining life, which is the remaining time until reaching the life standard resistance value, can be calculated, is created for each storage battery 92.

  The timing at which the remaining life function creating means 55 creates the resistance value-remaining life function is not limited to the estimation of the remaining life of the storage battery 92, but the temperature-life function, life resistance value, life guide resistance value, Using the initial resistance value, a resistance value-remaining life function may be created in advance for each temperature and stored in the storage means 52.

  The predicted value calculating means 56 substitutes the estimated resistance value input from the touch panel 12 into the resistance value-remaining life function created by the remaining life function creating means 55 to obtain the estimated remaining life predicted value of the storage battery 92. Calculate every time.

  The remaining life estimation means 57 estimates each storage battery 92 as a remaining life of the storage battery 92 by multiplying the predicted value of the reference remaining life calculated by the prediction value calculation means 56 by the safety factor.

  The inspection date determination means 58 determines the next inspection date for each storage battery 92 based on the remaining life estimated by the remaining life estimation means 57.

  The data transmission unit 59 creates data such as the elapsed time from the start of use of each storage battery 92, the average temperature, and the next inspection date, which are output to peripheral devices such as the touch panel 12, and transmits the data to the peripheral devices. The data created by the data transmission means 59 is transmitted to the touch panel 12, the administrator's personal computer, etc. via the input / output means 51, the cable 22, and communication devices such as routers as peripheral devices.

  The communication device 16 is a known communication device capable of transmitting a signal to an administrator's personal computer or the like, and when the deterioration state determination unit 54 determines that the internal resistance value of the storage battery 92 has reached the life guideline resistance value. A warning signal is sent to the administrator's personal computer. The communication method by the communication device 16 may be wireless or wired.

  Next, the remaining life estimation method performed for each storage battery 92 by the storage battery remaining life estimation device 2 of the present embodiment will be described. The worker measured the internal resistance value of the storage battery 92 at the start of use for each storage battery 92, and was set according to the measured internal resistance value (initial resistance value), the use start date, and the type of the storage battery 92. A temperature-life function, a life resistance value, a caution resistance value, and a life guide resistance value are input from the touch panel 12.

  When data is input from the touch panel 12, data is input to the arithmetic control device 15 via the input / output unit 51, and the input data is stored in the storage unit 52 by the storage unit 53. These data may be input when the remaining life of the storage battery 92 is estimated. Further, the temperature-life function, the life resistance value, the caution resistance value, and the life guide resistance value for each type of the storage battery 92 may be stored in the storage unit 52 in advance from the start of use of the storage battery 92.

  When the use of the storage battery 92 is started, the elapsed time from the use start time is counted by the counter 13. The temperature measured by the temperature sensor 11 is acquired at regular intervals by the temperature acquisition means 41 of the average temperature calculation device 14 from the time when the storage battery panel 91 starts to be used.

  At the time of estimation of the remaining life after the start of use of the storage battery 92 (during inspection, etc.), when the operator measures the internal resistance value of the storage battery 92 and inputs the measured internal resistance value (estimated resistance value) from the touch panel 12, The estimated resistance value is input to the arithmetic and control unit 15 via the input / output means 51, and the deterioration state determining means 54 determines whether or not the input estimated resistance value has reached the life guideline resistance value. If it is determined that the resistance value has been reached, the communication device 16 notifies the administrator or the like of an alarm.

  When the input estimated resistance value does not reach the life guideline resistance value, the average temperature from the start of use of the storage battery 92 at the time of input is calculated by the average temperature calculating means 42, and the calculated average temperature is The resistance value-remaining life function is created by the remaining life function creating means 55, and the estimated value of the estimated remaining life of the storage battery 92 is calculated as the predicted value calculating means by substituting the estimated resistance value into the created resistance value-remaining life function. The remaining life estimation means 57 estimates the remaining life of the storage battery 92 as the remaining life of the storage battery 92, which is calculated by 56 and multiplied by the preset safety factor. The next inspection date of the storage battery 92 is determined by the inspection date determination means 58 based on the estimated remaining life.

  The calculation of the average temperature by the average temperature calculation means 42 may be performed every time the temperature is acquired by the temperature acquisition means 41 from the start of use of the storage battery 92. The resistance value-residual life function can be created if the initial resistance value, life resistance value, life guide resistance value, and temperature-life function are aligned. In addition, the remaining lifetime function creating means 55 may create it for each temperature in advance.

  When the estimation of the remaining life and determination of the inspection date are completed, the information, such as the internal resistance value of the storage battery 92, the average temperature, and the elapsed time from the start of use, are transmitted from the data transmission unit 59, and the input / output unit 51 Is displayed on the touch panel 12. It is also possible to store these pieces of information in the storage means 52 so that the information can be confirmed from the administrator's personal computer or the like via the peripheral device, the communication device 16, and the input / output means 51.

  As described above, according to the storage battery remaining life estimation apparatus 2 of the present embodiment, the storage battery remaining life estimation method of the first embodiment can be apparatusized (automated). In addition, even when the storage battery remaining life estimation method 2 of the first embodiment is implemented as a device like the storage battery remaining life estimation apparatus 2 of the present embodiment, there is no need to permanently install a measuring instrument for measuring the internal resistance value of the storage battery 92. The installation cost can be reduced, and the calibration of the measuring instrument is easy, so that the measurement quality can be ensured with little effort, and the operation cost can be reduced.

  FIG. 4 is a configuration diagram of a storage battery remaining life estimation system (storage battery check date determination system) 3 according to the third embodiment of the present invention. The same code | symbol is attached | subjected to the structure same as the storage battery remaining life estimation apparatus 2 of 2nd Embodiment shown in FIG. 3, and description is abbreviate | omitted. The storage battery remaining life estimation system (storage battery check date determination system) 3 according to the present embodiment determines an inspection date (next time) by estimating the remaining temperature of the storage battery 92 and an average temperature calculation device 61 that calculates the average temperature of the storage battery 92. The personal computer 62 functions as a remaining life estimation device (storage battery check date determination device).

  The average temperature calculation device 61 includes a temperature sensor 11, a touch panel 12, a counter 13, a temperature acquisition unit 41, an average temperature calculation unit 42, and an input / output unit 63, and calculates the temperature measured by the temperature sensor 11. An average temperature is calculated for each storage battery 92 using a temperature acquired at regular intervals and acquired from the use start time of the storage battery 92.

  The touch panel 12 is connected to the input / output means 63 of the average temperature calculation device 61 via the cable 22.

  The input / output means 63 is connected to the peripheral device and inputs / outputs data to / from the peripheral device. As an example of the peripheral device, in addition to the touch panel 12 and the personal computer 62, an input device (not shown) such as a keyboard and a mouse, an output device such as a printer and a display, a communication device such as a router, a storage device such as a USB memory, a server A computer etc. are mentioned. The input / output means 63 can be configured to be able to input / output data to / from an optimal peripheral device as appropriate according to the usage method of the storage battery remaining life estimation system 3 (average temperature calculation device 61). The connection method between the input / output means 63 and peripheral devices may be wired or wireless.

  As the personal computer 62, a known personal computer including a display, an input device, a storage device, an arithmetic device, and the like can be used. The personal computer 62 includes a communication device 16, an input / output unit 51, a storage unit 52, a storage unit 53, a deterioration state determination unit 54, a remaining life function creation unit 55, a predicted value calculation unit 56, and a remaining life. An estimation means 57, an inspection date determination means 58, a data transmission means 59, and an average temperature acquisition means 64 for acquiring an average temperature for each storage battery 92 from the average temperature calculation device 61 are provided via the input / output means 51 and 63. Is connected to the average temperature calculation device 61, acquires the average temperature for each storage battery 92 from the average temperature calculation device 61, estimates the remaining life for each storage battery 92 based on the acquired average temperature, and stores the storage battery 92 based on the estimated remaining life. Determine an appropriate inspection date for each.

  The personal computer 62 may be a desktop type, a laptop type (notebook type), or a palmtop type (tablet type). However, if the personal computer 62 is installed for each storage battery panel 91 (average temperature calculation device 61), the installation cost increases, so it is portable. It is preferable that the size of the storage battery panel 91 (average temperature calculation device 61) can be shared.

  The average temperature calculation device 61 and the personal computer 62 are configured to be able to transmit and receive signals and data to and from each other via the input / output means 51 and 63.

  Next, the remaining life estimation method performed for each storage battery 92 by the storage battery remaining life estimation system 3 of the present embodiment will be described. The worker measured the internal resistance value of the storage battery 92 at the start of use for each storage battery 92, and was set according to the measured internal resistance value (initial resistance value), the use start date, and the type of the storage battery 92. The temperature-life function, life resistance value, caution resistance value, and life guide resistance value are input to the personal computer 62.

  When data is input to the personal computer 62, the input data is stored in the storage unit 52 by the storage unit 53. These data may be input when the remaining life of the storage battery 92 is estimated. Further, the temperature-life function, the life resistance value, the caution resistance value, and the life guide resistance value for each type of the storage battery 92 may be stored in the storage unit 52 before the use of the storage battery 92 is started.

  When the use of the storage battery 92 is started, the elapsed time from the use start time is counted by the counter 13 of the average temperature calculation device 61, and every time the temperature is acquired by the temperature acquisition means 41, the time from the use start time of the storage battery 92 is measured. The average temperature is calculated by the average temperature calculation means 42.

  When estimating the remaining life after the start of use of the storage battery 92 (during inspection, etc.), the operator measures the internal resistance value of the storage battery 92 and inputs the measured internal resistance value (estimated resistance value) to the personal computer 62. The deterioration state determining means 54 determines whether or not the input estimated resistance value has reached the life guide resistance value. If it is determined that the estimated life resistance value has reached the life guide resistance value, the communication device 16 manages it. A warning is sent to the person.

  If the input estimated resistance value does not reach the estimated life resistance value, the operator connects the personal computer 62 to the average temperature calculation device 61 and sets the estimated resistance value via the input / output means 51 and 63. The average temperature of the storage battery 92 at the time of input is acquired from the average temperature calculation device 61 by the average temperature acquisition unit 64, and the resistance value-remaining life function at the acquired average temperature is generated by the remaining life function generation unit 55. By substituting the estimated resistance value into the resistance value-remaining life function, a predicted value of the estimated remaining life of the storage battery 92 is calculated by the predicted value calculation means 56, and the calculated predicted value is multiplied by a preset safety factor. What is estimated by the remaining life estimation means 57 is the remaining life of the storage battery 92. The next inspection date of the storage battery 92 is determined by the inspection date determination means 58 based on the estimated remaining life.

  The calculation of the average temperature by the average temperature calculation unit 42 may be performed immediately before the average temperature acquisition unit 64 acquires the average temperature. The resistance value-residual life function can be created if the initial resistance value, life resistance value, life guide resistance value, and temperature-life function are aligned. In addition, the remaining lifetime function creating means 55 may create it for each temperature in advance.

  When the estimation of the remaining life and determination of the inspection date are completed, the information, such as the internal resistance value of the storage battery 92, the average temperature, and the elapsed time from the start of use, are transmitted from the data transmission unit 59, and the input / output unit 51 , 63 to be displayed on the touch panel 12. It is also possible to store the information in the storage unit 52 and transmit the information to the administrator's personal computer or the like via the input / output unit 51, the communication device 16, and peripheral devices.

  Data input to the personal computer 62 may be performed from the touch panel 12 via the input / output means 51 and 63 in a state where the personal computer 62 is connected to the average temperature calculation device 61.

  As described above, according to the storage battery remaining life estimation system 3 of the present embodiment, the average temperature calculation device 61 and the personal computer 62 functioning as the remaining life estimation device are separated. Only the temperature calculation device 61 needs to be installed, and cost reduction and space saving can be realized as compared with the storage battery remaining life estimation device 2 of the second embodiment.

  Instead of the personal computer 62, a function as a remaining life estimation device is added to a measuring instrument (not shown) that measures the internal resistance value of the storage battery 92, and the remaining temperature of the storage battery according to the present invention is composed of the average temperature calculating device 61 and the measuring instrument. A lifetime estimation system can also be configured.

  As described above, the remaining battery life estimation method, the remaining battery life estimation apparatus 2, and the remaining battery life estimation system 3 according to the first to third embodiments are used to determine the remaining storage battery life estimation method, the storage battery inspection date determination method, and the storage battery. Although the remaining life estimation apparatus and the storage battery remaining life estimation system have been described, the storage battery remaining life estimation method, the storage battery check date determination method, the storage battery remaining life estimation apparatus, and the storage battery remaining life estimation system of the present invention are limited to the above embodiment. However, the present invention can be modified without changing the gist.

  As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily understand various changes and modifications within the obvious scope by looking at the present specification. Therefore, such changes and modifications are interpreted as being within the scope of the invention defined by the claims.

DESCRIPTION OF SYMBOLS 2 Storage battery remaining life estimation apparatus 3 Storage battery remaining life estimation system 11 Temperature sensor 41 Temperature acquisition means 42 Average temperature calculation means 55 Remaining life function preparation means 56 Predicted value calculation means 57 Remaining life estimation means 61 Average temperature calculation means 62 Remaining life estimation apparatus 64 Mean temperature acquisition means

Claims (7)

A storage battery remaining life estimation method for estimating a remaining life that is a remaining time until the life of a storage battery whose life varies with temperature, wherein a life guide resistance value that is a guide for the life of the storage battery is set in advance, and the use of the storage battery The time from which the temperature from the start time is acquired at regular intervals, the average temperature is calculated using the temperature acquired from the start of use of the storage battery to the time at which the remaining life is estimated, and the remaining life is estimated The internal resistance value of the storage battery is measured with the above-mentioned internal resistance value, and the estimated remaining life until the internal resistance value of the storage battery reaches the life guideline resistance value can be calculated. resistance - and remaining service life function, in the approximate predicted value of remaining service life is calculated, the calculated the 蓄 residual battery life estimating how to estimate the remaining life based on the predicted value using,
Temperature representing the relationship between temperature and life of the battery - and life functions, and longevity resistance is lifetime of the battery set in advance,
Measure the initial resistance value at the start of use of the storage battery in advance,
The resistance value-residual life function is created based on the initial resistance value, the temperature-life function, the life resistance value, and the life guide resistance value ,
The temperature-life function is a function specific to the type of the storage battery,
The storage battery remaining life estimation method, wherein the life guide resistance value is a caution resistance value for calling attention before the life resistance value or the internal resistance value of the storage battery reaches the life resistance value . The resistance value-residual life function is created after calculating the average temperature,
2. The method for estimating a remaining battery life according to claim 1, wherein only the resistance value-remaining life function at the average temperature is created. The resistance value-residual life function is created before calculating the average temperature,
Wherein the resistance value for each temperature - battery remaining life estimation method according to claim 1, characterized in that to create the remaining life functions. Furthermore, a safety factor that is a value of 1 or less is set in advance,
The storage battery remaining life estimation method according to any one of claims 1 to 3 , wherein a value obtained by multiplying the predicted value by the safety factor is estimated as the remaining life. The remaining battery life is estimated by the storage battery remaining battery life estimation method according to any one of claims 1 to 4 ,
A storage battery inspection date determination method, wherein the storage battery inspection date is determined based on the estimated remaining life. A storage battery remaining life estimation device for estimating a remaining life that is the remaining time until the life of a storage battery whose life varies with temperature,
Temperature measuring means for measuring the temperature;
Temperature acquisition means for acquiring the temperature measured by the temperature measurement means at regular intervals;
An average temperature calculating means for calculating an average temperature using the temperature acquired up to the time of estimating the remaining life;
Measured at the start of use of the storage battery, a temperature-life function representing the relationship between the temperature and the life of the storage battery, a life resistance value that is the life of the storage battery, a life guide resistance value that is a guide for the life of the storage battery, and Based on the measured initial resistance value, a resistance value-residual life function, which is a function depending on the temperature at which an estimated value of the estimated remaining life until the internal resistance value of the storage battery reaches the expected life resistance value, can be calculated. A remaining life function creation means to create;
A predicted value calculation means for calculating a predicted value of the reference remaining life using the internal resistance value of the storage battery measured at the time of estimating the remaining life and the resistance value-remaining life function at the average temperature; ,
E Bei and a remaining service life estimation means for estimating the remaining service life based on the predicted value,
The temperature-life function is a function specific to the type of the storage battery,
The storage battery remaining life estimation apparatus characterized in that the life guide resistance value is a caution resistance value for calling attention before the life resistance value or the internal resistance value of the storage battery reaches the life resistance value . A storage battery remaining life estimation system that estimates a remaining life that is the remaining time until the life of a storage battery whose life varies with temperature,
An average temperature calculation device that acquires a temperature at regular intervals and calculates an average temperature using the temperature acquired until the time point for estimating the remaining life;
The average temperature is obtained from the average temperature calculation device, and the remaining life estimation device that estimates the remaining life based on the acquired average temperature,
The average temperature calculation device is acquired between a temperature measurement unit that measures temperature, a temperature acquisition unit that acquires the temperature measured by the temperature measurement unit at regular intervals, and a time point until the remaining life is estimated. Average temperature calculation means for calculating the average temperature using the measured temperature,
The remaining life estimation device includes a temperature-life function that is a function representing the relationship between temperature and the life of the storage battery, a life resistance value that is the life of the storage battery, and a life guide resistance value that is a guide for the life of the storage battery. And the initial resistance value measured at the start of use of the storage battery, depending on the temperature at which the predicted value of the estimated remaining life until the internal resistance value of the storage battery reaches the expected life resistance value can be calculated. A remaining life function creating means for creating a resistance value-residual life function as a function;
Average temperature acquisition means for acquiring the average temperature from the average temperature calculation device;
A predicted value calculation means for calculating a predicted value of the reference remaining life using the internal resistance value of the storage battery measured at the time of estimating the remaining life and the resistance value-remaining life function at the average temperature; ,
A remaining life estimating means for estimating the remaining life based on the predicted value,
The temperature-life function is a function specific to the type of storage battery ,
The life guide resistance value is a caution resistance value for calling attention before the life resistance value or the internal resistance value of the storage battery reaches the life resistance value,
The storage battery remaining life estimation system, wherein the remaining life estimation device estimates the remaining life using the average temperature calculated by the average temperature calculation device.

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