JP2022156037A - Storage battery system, remote monitoring system and control method for remote monitoring system - Google Patents

Storage battery system, remote monitoring system and control method for remote monitoring system Download PDF

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JP2022156037A
JP2022156037A JP2021059530A JP2021059530A JP2022156037A JP 2022156037 A JP2022156037 A JP 2022156037A JP 2021059530 A JP2021059530 A JP 2021059530A JP 2021059530 A JP2021059530 A JP 2021059530A JP 2022156037 A JP2022156037 A JP 2022156037A
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JP7353319B2 (en
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雅浩 米元
Masahiro Yonemoto
穂南 坂口
Honami Sakaguchi
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/16Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385Arrangements for measuring battery or accumulator variables
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/392Determining battery ageing or deterioration, e.g. state of health
    • GPHYSICS
    • G16INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16YINFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y10/00Economic sectors
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    • G16INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16YINFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
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    • GPHYSICS
    • G16INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16YINFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
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    • G16Y40/20Analytics; Diagnosis
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract

To provide a technique for keeping a data quality of a battery state while avoiding exhaustion of power to be supplied to a device for measuring the battery state.SOLUTION: A storage battery system comprises a storage battery and a battery management device. The battery management device includes a storage battery for measurement, and during stop of a device mounted with the storage battery system, measures a state of the storage battery at a time interval based on the lapse of time from the stop or a remaining capacity of the storage battery for measurement. Specifically, as the lapse of time from the stop is longer, the battery management device measures the state of the storage battery at a longer time interval. Otherwise, as the remaining capacity of the storage battery for measurement is less, the battery management device measures the state of the storage battery at a longer time interval.SELECTED DRAWING: Figure 1

Description

本発明は、蓄電池システム、遠隔監視システムおよび遠隔監視システムの制御方法に関する。 The present invention relates to a storage battery system, a remote monitoring system, and a control method for a remote monitoring system.

リチウムイオン電池などの蓄電池は、温度、充電率、電流などの負荷条件によって劣化進行速度が大きく異なる。また、車両に搭載される蓄電池システムのように大量の電池セルを組合わせた蓄電池システムの場合、電池セルの配置に起因する冷却条件の違いにより運行中の電池セルの温度推移が変化することがある。そのため、所定の電池寿命を得ることができるように蓄電池システムの設計を行おうとしても、事前試験により負荷条件と劣化進行速度の相関関係を網羅的に評価することは難しい。結果的に、所定の電池寿命を確保するために、蓄電池搭載量を増やしたり、電流制限値を下げたりして、蓄電池システムの設計におけるマージンを大きくする必要がある。 Storage batteries, such as lithium-ion batteries, deteriorate at different speeds depending on load conditions such as temperature, charging rate, and current. In addition, in the case of a storage battery system that combines a large number of battery cells, such as a storage battery system mounted on a vehicle, the temperature transition of the battery cells during operation may change due to differences in cooling conditions due to the arrangement of the battery cells. be. Therefore, even if an attempt is made to design a storage battery system so that a predetermined battery life can be obtained, it is difficult to comprehensively evaluate the correlation between the load conditions and the rate of progress of deterioration through preliminary tests. As a result, in order to secure a predetermined battery life, it is necessary to increase the amount of storage batteries installed or decrease the current limit value to increase the margin in the design of the storage battery system.

そこで、特許文献1と特許文献2に開示された技術では、実際の劣化進行度を加味して劣化進行度を定期的に予測し直し、電流制限値などを上下させて実際の電池寿命を目標寿命に近づけている。 Therefore, in the techniques disclosed in Patent Documents 1 and 2, the actual deterioration progress is taken into account and the deterioration progress is periodically re-predicted, and the current limit value is increased or decreased to achieve the actual battery life. approaching the end of its life.

特開2020-174489号公報JP 2020-174489 A 特開2020-174490号公報JP 2020-174490 A

特許文献1と特許文献2に開示された技術では、実際の蓄電池の負荷条件を反映することはできるものの、劣化予測モデルの精度が十分でない場合には、制限値を適切に変更することができない。 Although the technologies disclosed in Patent Documents 1 and 2 can reflect the actual load conditions of the storage battery, if the accuracy of the deterioration prediction model is not sufficient, the limit value cannot be changed appropriately. .

劣化予測モデルを高精度化し、制限値を適切に変更するため、遠隔監視システムにより実際の車両における運行中の稼働履歴データを収集して解析し、負荷条件と劣化進行速度の相関関係を更新することが考えられる。遠隔監視システムで得られる稼働履歴データを基に、電池セルごとの実際の負荷と劣化進行速度の相関関係を抽出するためには、長時間、途切れなく、継続的に電池状態と負荷のデータを取得・蓄積する必要がある。 In order to improve the accuracy of the deterioration prediction model and appropriately change the limit values, a remote monitoring system collects and analyzes operation history data of actual trains during operation, and updates the correlation between load conditions and deterioration progression speed. can be considered. In order to extract the correlation between the actual load of each battery cell and the rate of progress of deterioration based on the operation history data obtained by the remote monitoring system, it is necessary to collect battery status and load data continuously for a long period of time without interruption. It is necessary to acquire and accumulate.

しかし、車両のメインスイッチが切れている車両休止中は、電池状態を測定する装置にも電力が供給されない。そのため、継続的に電池状態を測定するには、車両休止中は、電池状態を測定する装置に、別途、電力を供給する必要がある。 However, during periods of vehicle rest when the main switch of the vehicle is turned off, power is also not supplied to the device for measuring battery status. Therefore, in order to continuously measure the battery state, it is necessary to separately supply power to the device that measures the battery state while the vehicle is at rest.

また、車両休止中に、電池状態を測定する時間間隔を短くすると、電池状態を測定する装置に供給する電力が底をついて、電池状態のデータに欠損が生じる可能性がある。 Further, if the time interval for measuring the battery state is shortened while the vehicle is at rest, the power supplied to the device for measuring the battery state may run out, resulting in loss of battery state data.

一方、電池状態を測定する時間間隔を長くすると、測定値の変動が大きい車両休止直後の電池状態のデータを十分取ることができず、データ品質が低下してしまう。 On the other hand, if the time interval for measuring the battery state is lengthened, it will not be possible to obtain sufficient data on the battery state immediately after the vehicle is stopped, in which the measured values fluctuate greatly, and the data quality will deteriorate.

そこで、本発明は、電池状態を測定する装置に供給する電力が底をつくのを避けつつ、電池状態のデータ品質を保持することが可能な技術を提供することを目的とする。 SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a technology capable of maintaining the quality of battery state data while avoiding running out of power supplied to a device that measures the state of a battery.

上記の課題を解決するために、代表的な本発明の蓄電池システムの一つは、蓄電池と、電池管理装置とを備えている。そして、電池管理装置は、測定用蓄電池を備え、蓄電池システムを搭載する装置の休止中に、休止からの経過時間または測定用蓄電池の残容量に基づいた時間間隔で、蓄電池の状態を測定する。 In order to solve the above problems, one typical storage battery system of the present invention includes a storage battery and a battery management device. The battery management device includes a storage battery for measurement, and measures the state of the storage battery at time intervals based on the elapsed time from the suspension or the remaining capacity of the storage battery for measurement while the device equipped with the storage battery system is resting.

本発明によれば、電池状態を測定する装置に供給する電力が底をつくのを避けつつ、電池状態のデータ品質を保持することが可能となる。 According to the present invention, it is possible to maintain the data quality of the battery state while avoiding running out of power supplied to a device for measuring the battery state.

上記した以外の課題、構成および効果は、以下の実施形態の説明により明らかにされる。 Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

実施例に係る遠隔監視システムの構成を示す図である。It is a figure which shows the structure of the remote monitoring system which concerns on an Example. 実施例に係る外部サーバーの処理を示すフローチャートである。4 is a flow chart showing processing of an external server according to an embodiment; 実施例に係る電池管理装置による車両休止中の蓄電池の状態の測定・保存を示す図である。FIG. 4 is a diagram showing measurement and storage of a state of a storage battery while the vehicle is at rest by the battery management device according to the embodiment; 実施例における、車両休止中に蓄電池の状態を測定・保存する時間間隔を決定する条件を示す図である。FIG. 5 is a diagram showing conditions for determining a time interval for measuring and storing the state of a storage battery while the vehicle is not in operation in the embodiment;

以下、図面を参照して本発明の実施形態について説明する。なお、この実施形態により本発明が限定されるものではない。また、図面の記載において、同一部分には同一の符号を付して示している。 Embodiments of the present invention will be described below with reference to the drawings. It should be noted that the present invention is not limited by this embodiment. Moreover, in the description of the drawings, the same parts are denoted by the same reference numerals.

図1を参照して、遠隔監視システムを車両に搭載される蓄電池の遠隔監視に適用した場合の構成について説明する。図1は、実施例に係る遠隔監視システムの構成を示す図である。 A configuration in which the remote monitoring system is applied to remote monitoring of a storage battery mounted on a vehicle will be described with reference to FIG. FIG. 1 is a diagram showing the configuration of a remote monitoring system according to an embodiment.

遠隔監視システムは、複数の蓄電池システム100と外部サーバー200から構成される。蓄電池システム100の数は、複数であればよく、特段限定されるものではない。 The remote monitoring system is composed of a plurality of storage battery systems 100 and an external server 200 . The number of storage battery systems 100 is not particularly limited as long as it is plural.

蓄電池システム100は、基本的に、蓄電池101、電池管理装置102、充放電制御装置103、無線通信装置104から構成される。電池管理装置102は、測定用蓄電池105を備える。 The storage battery system 100 is basically composed of a storage battery 101 , a battery management device 102 , a charge/discharge control device 103 and a wireless communication device 104 . The battery management device 102 includes a measurement storage battery 105 .

蓄電池101および測定用蓄電池105は、例えば、リチウムイオン電池、鉛蓄電池、ニッケル水素電池、ニッケルカドミウム電池などから構成されるが、蓄電池の種類はこれらに限定されるものではない。また、蓄電池101は、主に駆動用モータなどに電力を供給することができるのに対し、測定用蓄電池105は、車両休止中に、電池管理装置102が蓄電池101の状態を測定・保存するための電力を供給することができる。 The storage battery 101 and the measurement storage battery 105 are composed of, for example, a lithium-ion battery, a lead-acid battery, a nickel-hydrogen battery, a nickel-cadmium battery, or the like, but the types of storage batteries are not limited to these. In addition, while the storage battery 101 can mainly supply electric power to a drive motor and the like, the measurement storage battery 105 is used for measuring and storing the state of the storage battery 101 by the battery management device 102 while the vehicle is at rest. of power can be supplied.

電池管理装置102は、センサなどによって得られる情報から蓄電池101の状態を監視することができる装置であり、車両休止中は、測定用蓄電池105から供給される電力により、蓄電池101の状態を測定・保存することができる。電池管理装置102は、無線通信装置104に、車両休止中に測定された蓄電池101の状態を含む、蓄電池101の稼働履歴データ(以下、「稼働履歴データ」は、車両休止中に測定された蓄電池101の状態を含む。)等を送ることができる。また、電池管理装置102は、無線通信装置104から蓄電池101の制限値等を受け取り、充放電制御装置103に充放電制御に必要な情報を送ることができる。 The battery management device 102 is a device that can monitor the state of the storage battery 101 from information obtained by a sensor or the like. can be saved. The battery management device 102 provides the wireless communication device 104 with operation history data of the storage battery 101 including the state of the storage battery 101 measured while the vehicle is at rest (hereinafter, “operation history data” refers to storage battery data measured while the vehicle is at rest). 101 status.), etc. can be sent. Also, the battery management device 102 can receive the limit value of the storage battery 101 and the like from the wireless communication device 104 and send information necessary for charge/discharge control to the charge/discharge control device 103 .

電池管理装置102が車両休止中に測定・保存する蓄電池101の状態としては、電圧、温度などが挙げられるが、これらに限定されるものではない。 The state of the storage battery 101 that the battery management device 102 measures and stores while the vehicle is inactive includes voltage, temperature, and the like, but is not limited to these.

なお、本開示において、蓄電池の制限値とは、電流上限値、充電率範囲などの蓄電池の使用制限に関する数値を意味するが、これらに限定されるものではない。 In addition, in the present disclosure, the limit value of the storage battery means a numerical value related to the use limit of the storage battery, such as the current upper limit value and the charging rate range, but is not limited to these.

充放電制御装置103は、蓄電池101の充放電を制御することができる装置であり、電池管理装置102から充放電制御に必要な情報を受け取ることができる。 The charge/discharge control device 103 is a device that can control charge/discharge of the storage battery 101 and can receive information necessary for charge/discharge control from the battery management device 102 .

無線通信装置104としては、IoTゲートウェイなどが挙げられるが、これに限定されるものではない。無線通信装置104は、電池管理装置102から受け取った蓄電池101の稼働履歴データを蓄積し、無線通信により稼働履歴データを外部サーバー200に送信することができる。また、無線通信装置104は、無線通信により蓄電池101の制限値を外部サーバー200から受信し、制限値を電池管理装置102に送ることができる。 The wireless communication device 104 may be an IoT gateway or the like, but is not limited to this. The wireless communication device 104 can accumulate operation history data of the storage battery 101 received from the battery management device 102 and transmit the operation history data to the external server 200 by wireless communication. Also, the wireless communication device 104 can receive the limit value of the storage battery 101 from the external server 200 by wireless communication and send the limit value to the battery management device 102 .

なお、無線通信装置104と電池管理装置102は1つの装置として構成してもよいし、それぞれ単独の装置として構成してもよい。 Note that the wireless communication device 104 and the battery management device 102 may be configured as one device, or may be configured as individual devices.

無線通信装置104が外部サーバー200に送信する稼働履歴データとしては、電流、電力、電圧、充電率、温度、気温、容量維持率、抵抗上昇率、ダイヤグラム、位置情報、車両重量、乗車率、乗車人員などが挙げられるが、これらに限定されるものではない。 The operation history data that the wireless communication device 104 transmits to the external server 200 includes current, power, voltage, charging rate, temperature, air temperature, capacity retention rate, resistance increase rate, diagram, position information, vehicle weight, passenger rate, passenger This includes, but is not limited to, personnel.

外部サーバー200は、データストレージ部201、稼働履歴データ解析部202、寿命予測判定部203、制限値決定部204から構成されるが、これら以外の要素を含んでいてもよい。 The external server 200 includes a data storage unit 201, an operation history data analysis unit 202, a life prediction determination unit 203, and a limit value determination unit 204, but may include elements other than these.

データストレージ部201は、複数の蓄電池システム100から受信した蓄電池101の稼働履歴データを集約し、記憶することができる。 The data storage unit 201 can collect and store operation history data of the storage battery 101 received from the plurality of storage battery systems 100 .

稼働履歴データ解析部202は、データストレージ部201に記憶された稼働履歴データを統計的に解析し、蓄電池101の劣化予測に必要なパラメータを更新することができる。 The operation history data analysis unit 202 can statistically analyze the operation history data stored in the data storage unit 201 and update parameters necessary for predicting deterioration of the storage battery 101 .

パラメータの算定方法としては、所定の計算式により算出する方法、予め計算した結果を集積したテーブルを用いる方法などが挙げられるが、これらに限定されるものではない。 Methods of calculating the parameters include, but are not limited to, a method of calculating using a predetermined calculation formula, a method of using a table in which precalculated results are accumulated, and the like.

また、蓄電池システム100の数を増加させることにより、稼働履歴データの統計的な解析の正確性を高め、蓄電池101の劣化予測に必要なパラメータを高精度化することができる。 In addition, by increasing the number of storage battery systems 100, the accuracy of statistical analysis of operation history data can be improved, and parameters necessary for predicting deterioration of the storage battery 101 can be made highly accurate.

寿命予測判定部203は、稼働履歴データ解析部202が算定したパラメータと、各々の蓄電池システム100から受信した稼働履歴データを用いて各々の蓄電池システム100の蓄電池101の寿命を予測し、予測寿命と目標寿命との大小関係を判定することができる。 The life prediction determination unit 203 predicts the life of the storage battery 101 of each storage battery system 100 using the parameters calculated by the operation history data analysis unit 202 and the operation history data received from each storage battery system 100. A magnitude relationship with the target life can be determined.

蓄電池101の劣化予測に必要なパラメータを高精度化することにより、各々の蓄電池システム100の蓄電池101の予測寿命を高精度化することができる。 By increasing the accuracy of the parameters necessary for predicting the deterioration of the storage battery 101, it is possible to increase the accuracy of the predicted lifetime of the storage battery 101 of each storage battery system 100. FIG.

なお、本開示において、目標寿命とは、蓄電池101の交換周期のような、実際の電池寿命を近づけるべき目標値を意味する。 In the present disclosure, the target life means a target value, such as the replacement cycle of the storage battery 101, to bring the actual battery life closer.

制限値決定部204は、予測寿命と目標寿命との大小関係に基づいて各々の蓄電池システム100に送信する蓄電池101の制限値を決定することができる。具体的には、予測寿命が目標寿命を上回る場合は、制限を緩和し、予測寿命が目標寿命を下回る場合は、制限を強化する。 The limit value determination unit 204 can determine the limit value of the storage battery 101 to be transmitted to each storage battery system 100 based on the magnitude relationship between the predicted life span and the target life span. Specifically, if the predicted lifetime exceeds the target lifetime, the restrictions are relaxed, and if the predicted lifetime is below the target lifetime, the restrictions are tightened.

各々の蓄電池システム100の蓄電池101の予測寿命を高精度化することにより、各々の蓄電池システム100に送信する蓄電池101の制限値を適切に変更することができる。 By increasing the accuracy of the predicted lifetime of the storage battery 101 of each storage battery system 100, the limit value of the storage battery 101 to be transmitted to each storage battery system 100 can be appropriately changed.

図2を参照して、実施例に係る外部サーバー200の処理について説明する。図2は、実施例に係る外部サーバー200の処理を示すフローチャートである。 Processing of the external server 200 according to the embodiment will be described with reference to FIG. FIG. 2 is a flow chart showing processing of the external server 200 according to the embodiment.

まず、ステップ301では、データストレージ部201が、複数の蓄電池システム100から受信した蓄電池101の稼働履歴データを集約し、記憶する。 First, in step 301, the data storage unit 201 collects and stores operation history data of the storage battery 101 received from the plurality of storage battery systems 100. FIG.

次に、ステップ302では、稼働履歴データ解析部202が、データストレージ部201に記憶された稼働履歴データを統計的に解析し、蓄電池101の劣化予測に必要なパラメータを更新する。 Next, in step 302 , the operation history data analysis unit 202 statistically analyzes the operation history data stored in the data storage unit 201 and updates parameters necessary for predicting deterioration of the storage battery 101 .

次に、ステップ303では、寿命予測判定部203が、稼働履歴データ解析部202が算出したパラメータと、各々の蓄電池システム100から受信した稼働履歴データを用いて各々の蓄電池システム100の蓄電池101の寿命を予測し、予測寿命と目標寿命との大小関係を判定する。 Next, in step 303 , life prediction determination unit 203 calculates the life of storage battery 101 of each storage battery system 100 using the parameters calculated by operation history data analysis unit 202 and the operation history data received from each storage battery system 100 . is predicted, and the magnitude relationship between the predicted service life and the target service life is determined.

次に、ステップ304では、制限値決定部204が、予測寿命と目標寿命との大小関係に基づいて各々の蓄電池システム100に送信する蓄電池101の制限値を決定する。 Next, in step 304, the limit value determination unit 204 determines the limit value of the storage battery 101 to be transmitted to each storage battery system 100 based on the magnitude relationship between the predicted life span and the target life span.

このように、複数の蓄電池システム100の稼働履歴データを外部サーバー200のデータストレージ部201に集約し、それらの稼働履歴データを稼働履歴データ解析部202にて統計的に解析して、蓄電池101の劣化予測に必要なパラメータを更新する。その後、寿命予測判定部203にて各々の蓄電池システム100の蓄電池101の寿命を予測し、目標寿命との大小関係を判定して、その結果に基づいて、制限値決定部204にて各々の蓄電池システム100の蓄電池101の制限値を決定する。制限値は、各々の蓄電池システム100にフィードバックされる。これにより、劣化予測モデルを高精度化し、制限値を適切に変更することが可能となる。 In this way, the operation history data of a plurality of storage battery systems 100 is aggregated in the data storage unit 201 of the external server 200, the operation history data is statistically analyzed by the operation history data analysis unit 202, and the storage battery 101 Update the parameters necessary for deterioration prediction. After that, the life prediction determination unit 203 predicts the life of the storage battery 101 of each storage battery system 100, determines the magnitude relationship with the target life, and based on the result, the limit value determination unit 204 determines the life of each storage battery. A limit value for the storage battery 101 of the system 100 is determined. The limit value is fed back to each storage battery system 100 . This makes it possible to improve the accuracy of the deterioration prediction model and appropriately change the limit value.

<電池管理装置による車両休止中の蓄電池の状態の測定・保存>
図3を参照して、実施例に係る電池管理装置102による車両休止中の蓄電池101の状態の測定・保存について説明する。
<Measurement and storage of storage battery state while vehicle is not in use by battery management device>
Measurement and storage of the state of the storage battery 101 while the vehicle is at rest by the battery management device 102 according to the embodiment will be described with reference to FIG. 3 .

図3は、実施例に係る電池管理装置102による車両休止中の蓄電池101の状態の測定・保存を示す図である。 FIG. 3 is a diagram showing how the battery management device 102 according to the embodiment measures and saves the state of the storage battery 101 while the vehicle is at rest.

図3において、矢印は、時間の経過を示し、丸印は、車両休止中に測定・保存された電池状態のデータを示している。左側の丸印は、右側の丸印よりも先に測定・保存された電池状態のデータを示し、縦の点線は、蓄電池101の状態を測定・保存する時間間隔が変更された時点を示している。点線の左側の丸印は、短い時間間隔(t間隔)で測定・保存された電池状態のデータを示し、点線の右側の丸印は、長い時間間隔(t間隔)で測定・保存された電池状態のデータを示している。つまり、t<tの場合の測定・保存された電池状態のデータの例を示している。 In FIG. 3, arrows indicate the passage of time, and circles indicate battery state data measured and stored while the vehicle is at rest. The circle on the left indicates the battery state data that was measured and stored before the circle on the right, and the vertical dotted line indicates the point in time when the time interval for measuring and storing the state of the storage battery 101 was changed. there is The circle on the left side of the dotted line indicates battery status data measured and stored at short time intervals (t1 interval ), and the circle on the right side of the dotted line indicates data measured and stored at long time intervals (t2 interval). shows battery status data. That is, it shows an example of measured and stored battery state data when t 1 <t 2 .

図3に示すように、2種類の時間間隔で蓄電池101の状態を測定・保存する場合、車両休止直後は、短い時間間隔(t間隔)で蓄電池101の状態を測定・保存するが、所定の条件が満たされた後は、長い時間間隔(t間隔)で蓄電池101の状態を測定・保存する。これにより、測定値の変動が大きい車両休止直後の電池状態のデータを十分取得しつつ、測定用蓄電池105が供給する電力を抑えた運用を可能とする。 As shown in FIG. 3, when the state of the storage battery 101 is measured and stored at two types of time intervals, the state of the storage battery 101 is measured and stored at short time intervals (t1 interval ) immediately after the vehicle is stopped. After the condition is satisfied, the state of the storage battery 101 is measured and stored at long time intervals (t2 intervals). As a result, it is possible to obtain sufficient data on the battery state immediately after the vehicle is stopped, in which the measured value fluctuates greatly, while suppressing the electric power supplied by the measurement storage battery 105 .

電池管理装置102に保存された電池状態のデータは、瞬時値、平均値、二乗平均の根(Root Mean Square)のいずれか1つ以上としてもよい。これにより、短い時間間隔で保存された電池状態のデータだけでなく、長い時間間隔で保存された電池状態のデータも、稼働履歴データの解析に適したデータ品質で保存することができる。 The battery state data stored in the battery management device 102 may be one or more of an instantaneous value, an average value, and a root mean square. As a result, not only battery status data saved at short time intervals but also battery status data saved at long time intervals can be saved with data quality suitable for analysis of operation history data.

図4を参照して、車両休止中に蓄電池101の状態を測定・保存する時間間隔を決定する条件について説明する。図4は、実施例における、車両休止中に蓄電池101の状態を測定・保存する時間間隔を決定する条件を示す図である。 Referring to FIG. 4, conditions for determining the time interval for measuring and storing the state of storage battery 101 while the vehicle is at rest will be described. FIG. 4 is a diagram showing conditions for determining a time interval for measuring and storing the state of the storage battery 101 while the vehicle is not in operation, according to the embodiment.

図4に示すように、車両休止直後は車両稼働中と同じように短い時間間隔で蓄電池101の状態を測定・保存し、車両休止からの経過時間または測定用蓄電池105の残容量、例えば充電率(SOC:State of Charge)に基づいて蓄電池101の状態を測定・保存する時間間隔を変更する。具体的には、車両休止からの経過時間が長いほど、長い時間間隔で、蓄電池101の状態を測定・保存する。または、測定用蓄電池105の残容量が少ないほど、長い時間間隔で、蓄電池101の状態を測定・保存する。 As shown in FIG. 4, immediately after the vehicle is stopped, the state of the storage battery 101 is measured and stored at short time intervals in the same way as when the vehicle is in operation. The time interval for measuring and storing the state of the storage battery 101 is changed based on (SOC: State of Charge). Specifically, the longer the elapsed time since the vehicle is stopped, the longer the time intervals to measure and store the state of the storage battery 101 . Alternatively, the state of the storage battery 101 is measured and stored at longer time intervals as the remaining capacity of the measurement storage battery 105 decreases.

つまり、車両休止からの経過時間が長くなるにしたがって、長い時間間隔で蓄電池101の状態を測定・保存しても、データの品質への影響が少なく、測定用蓄電池105の残容量が少なくなるにしたがって、長い時間間隔で蓄電池101の状態を測定・保存することによって、測定用蓄電池105が供給する電力を抑え、安定的にデータを確保することができる。 That is, as the elapsed time from the vehicle stop becomes longer, even if the state of the storage battery 101 is measured and stored at longer time intervals, the quality of the data is less affected, and the remaining capacity of the measurement storage battery 105 becomes smaller. Therefore, by measuring and storing the state of the storage battery 101 at long time intervals, the power supplied by the measurement storage battery 105 can be suppressed, and data can be stably secured.

そして、車両休止からの経過時間の状況と、測定用蓄電池105の残容量の状況を組み合わせて蓄電池101の状態を測定・保存する時間間隔を設定することによって、電池状態のデータ品質を安定して保持することが可能となる。 By setting the time interval for measuring and storing the state of the storage battery 101 by combining the state of the elapsed time since the vehicle was stopped and the state of the remaining capacity of the storage battery 105 for measurement, the data quality of the battery state can be stabilized. It becomes possible to hold.

なお、蓄電池101の状態を測定・保存する時間間隔は、図4においては3種類であるが、複数であればよく、特段限定されるものではない。 Although there are three types of time intervals for measuring and storing the state of storage battery 101 in FIG.

また、蓄電池101の状態を測定・保存する時間間隔が長い場合、蓄電池101の状態を測定・保存する度に、電池管理装置102を休止・再起動させてもよい。これにより、測定用蓄電池105が供給する電力をさらに抑えることができる。 Also, if the time interval for measuring and storing the state of the storage battery 101 is long, the battery management device 102 may be paused and restarted each time the state of the storage battery 101 is measured and stored. As a result, the power supplied by the measurement storage battery 105 can be further reduced.

なお、上述した実施形態では、遠隔監視システムを車両に搭載される蓄電池の遠隔監視に適用した場合について説明した。しかし、本発明の適用分野はこれに限定されない。本発明は、蓄電池一般の遠隔監視に適用可能である。 In the above-described embodiment, the case where the remote monitoring system is applied to remote monitoring of a storage battery mounted on a vehicle has been described. However, the field of application of the present invention is not limited to this. INDUSTRIAL APPLICABILITY The present invention is applicable to remote monitoring of storage batteries in general.

本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施例は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。また、上記の各構成、機能、処理部、処理手段等は、それらの一部又は全部を、例えば集積回路で設計する等によりハードウェアで実現してもよい。また、上記の各構成、機能等は、プロセッサがそれぞれの機能を実現するプログラムを解釈し、実行することによりソフトウェアで実現してもよい。各機能を実現するプログラム、テーブル、ファイル等の情報は、メモリや、ハードディスク、SSD(Solid State Drive)等の記録装置、または、ICカード、SDカード、DVD等の記録媒体に置くことができる。 The present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the described configurations. Moreover, it is possible to add, delete, or replace a part of the configuration of the embodiment with another configuration. Further, each of the above configurations, functions, processing units, processing means, and the like may be realized by hardware, for example, by designing a part or all of them using an integrated circuit. Moreover, each of the above configurations, functions, etc. may be realized by software by a processor interpreting and executing a program for realizing each function. Information such as programs, tables, and files that implement each function can be stored in recording devices such as memories, hard disks, SSDs (Solid State Drives), or recording media such as IC cards, SD cards, and DVDs.

100…蓄電池システム、101…蓄電池、102…電池管理装置、103…充放電制御装置、104…無線通信装置、105…測定用蓄電池、200…外部サーバー、201…データストレージ部、202…稼働履歴データ解析部、203…寿命予測判定部、204…制限値決定部 DESCRIPTION OF SYMBOLS 100... Storage battery system 101... Storage battery 102... Battery management apparatus 103... Charge/discharge control apparatus 104... Wireless communication apparatus 105... Storage battery for measurement 200... External server 201... Data storage part 202... Operation history data Analysis unit 203 Life prediction determination unit 204 Limit value determination unit

Claims (9)

蓄電池と、
電池管理装置と、
を備える蓄電池システムであって、
前記電池管理装置は、
測定用蓄電池を備え、
前記蓄電池システムを搭載する装置の休止中に、休止からの経過時間または前記測定用蓄電池の残容量に基づいた時間間隔で、前記蓄電池の状態を測定する、
蓄電池システム。
a storage battery;
a battery management device;
A storage battery system comprising
The battery management device
Equipped with a battery for measurement,
While the device equipped with the storage battery system is resting, the state of the storage battery is measured at time intervals based on the elapsed time from rest or the remaining capacity of the measurement storage battery.
battery system.
請求項1に記載の蓄電池システムであって、
前記電池管理装置は、休止からの経過時間が長いほど、長い時間間隔で、前記蓄電池の状態を測定する、
蓄電池システム。
The storage battery system according to claim 1,
The battery management device measures the state of the storage battery at longer time intervals as the elapsed time from rest is longer.
battery system.
請求項1または請求項2に記載の蓄電池システムであって、
前記電池管理装置は、前記測定用蓄電池の残容量が少ないほど、長い時間間隔で、前記蓄電池の状態を測定する、
蓄電池システム。
The storage battery system according to claim 1 or 2,
The battery management device measures the state of the storage battery at longer time intervals as the remaining capacity of the measurement storage battery decreases.
battery system.
請求項1ないし請求項3のいずれか一項に記載の蓄電池システムであって、
前記電池管理装置は、前記蓄電池システムを搭載する装置の休止中に測定された前記蓄電池の状態を保存し、
保存された前記蓄電池の状態は、瞬時値、平均値、二乗平均の根(Root Mean Square)のいずれか1つ以上である、
蓄電池システム。
The storage battery system according to any one of claims 1 to 3,
The battery management device saves the state of the storage battery measured while the device equipped with the storage battery system is idle,
The saved state of the storage battery is any one or more of an instantaneous value, an average value, and a root mean square,
battery system.
複数の蓄電池システムと、
外部サーバーと、
を備える遠隔監視システムであって、
前記蓄電池システムは、
蓄電池と、
電池管理装置と、
を備え
前記電池管理装置は、
測定用蓄電池を備え、
前記蓄電池システムを搭載する装置の休止中に、休止からの経過時間または前記測定用蓄電池の残容量に基づいた時間間隔で、前記蓄電池の状態を測定し、
前記外部サーバーは、
複数の前記蓄電池システムから受信した、前記蓄電池システムを搭載する装置の休止中に測定された前記蓄電池の状態を含む、前記蓄電池の稼働履歴データを記憶するデータストレージ部と、
前記データストレージ部に記憶された前記稼働履歴データを解析し、前記蓄電池の劣化予測に必要なパラメータを算定する稼働履歴データ解析部と、
前記稼働履歴データ解析部が算定した前記パラメータと、各々の前記蓄電池システムから受信した前記稼働履歴データとを用いて各々の前記蓄電池システムの前記蓄電池の寿命を予測し、予測寿命と目標寿命との大小関係を判定する寿命予測判定部と、
前記予測寿命と目標寿命との大小関係に基づいて各々の前記蓄電池システムに送信する前記蓄電池の制限値を決定する制限値決定部と、
を備える、
遠隔監視システム。
a plurality of storage battery systems;
an external server;
A remote monitoring system comprising:
The storage battery system is
a storage battery;
a battery management device;
The battery management device comprises
Equipped with a battery for measurement,
measuring the state of the storage battery at time intervals based on the elapsed time from the suspension or the remaining capacity of the measurement storage battery during suspension of the device equipped with the storage battery system;
The external server is
a data storage unit that stores operation history data of the storage battery received from the plurality of the storage battery systems, including the state of the storage battery measured during rest of the device equipped with the storage battery system;
an operation history data analysis unit that analyzes the operation history data stored in the data storage unit and calculates parameters necessary for predicting deterioration of the storage battery;
Using the parameter calculated by the operation history data analysis unit and the operation history data received from each storage battery system, the life of the storage battery of each storage battery system is predicted, and the predicted life and target life are calculated. a life prediction determination unit that determines the size relationship;
a limit value determination unit that determines a limit value of the storage battery to be transmitted to each of the storage battery systems based on the magnitude relationship between the predicted life span and the target life span;
comprising
Remote monitoring system.
請求項5に記載の遠隔監視システムであって、
前記電池管理装置は、休止からの経過時間が長いほど、長い時間間隔で、前記蓄電池の状態を測定する、
遠隔監視システム。
A remote monitoring system according to claim 5,
The battery management device measures the state of the storage battery at longer time intervals as the elapsed time from rest is longer.
Remote monitoring system.
請求項5または請求項6に記載の遠隔監視システムあって、
前記電池管理装置は、前記測定用蓄電池の残容量が少ないほど、長い時間間隔で、前記蓄電池の状態を測定する、
遠隔監視システム。
The remote monitoring system according to claim 5 or claim 6,
The battery management device measures the state of the storage battery at longer time intervals as the remaining capacity of the measurement storage battery decreases.
Remote monitoring system.
請求項5ないし請求項7のいずれか一項に記載の遠隔監視システムであって、
前記電池管理装置は、前記蓄電池システムを搭載する装置の休止中に測定された前記蓄電池の状態を保存し、
保存された前記蓄電池の状態は、瞬時値、平均値、二乗平均の根(Root Mean Square)のいずれか1つ以上である、
遠隔監視システム。
The remote monitoring system according to any one of claims 5 to 7,
The battery management device saves the state of the storage battery measured while the device equipped with the storage battery system is idle,
The saved state of the storage battery is any one or more of an instantaneous value, an average value, and a root mean square,
Remote monitoring system.
複数の蓄電池システムと、
外部サーバーと、
を備える遠隔監視システムの制御方法であって、
前記蓄電池システムが備える電池管理装置は、前記蓄電池システムを搭載する装置の休止中に、休止からの経過時間または前記電池管理装置が備える測定用蓄電池の残容量に基づいた時間間隔で、前記蓄電池システムが備える蓄電池の状態を測定し、
前記外部サーバーが備えるデータストレージ部が、複数の前記蓄電池システムから受信した、前記蓄電池システムを搭載する装置の休止中に測定された前記蓄電池の状態を含む、前記蓄電池の稼働履歴データを記憶するステップと、
前記外部サーバーが備える稼働履歴データ解析部が、前記データストレージ部に記憶された前記稼働履歴データを解析し、前記蓄電池の劣化予測に必要なパラメータを算定するステップと、
前記外部サーバーが備える寿命予測判定部が、前記稼働履歴データ解析部が算定した前記パラメータと、各々の前記蓄電池システムから受信した前記稼働履歴データとを用いて各々の前記蓄電池システムの前記蓄電池の寿命を予測し、予測寿命と目標寿命との大小関係を判定するステップと、
前記外部サーバーが備える制限値決定部が、前記予測寿命と目標寿命との大小関係に基づいて各々の前記蓄電池システムに送信する前記蓄電池の制限値を決定するステップと、
を有する、
遠隔監視システムの制御方法。
a plurality of storage battery systems;
an external server;
A control method for a remote monitoring system comprising
The battery management device provided in the storage battery system, while the device equipped with the storage battery system is resting, at time intervals based on the elapsed time from rest or the remaining capacity of the measurement storage battery provided in the battery management device, the storage battery system Measure the state of the storage battery provided in the
A step in which the data storage unit provided in the external server stores operation history data of the storage battery received from the plurality of the storage battery systems and including the state of the storage battery measured while the device equipped with the storage battery system is resting. When,
a step in which an operation history data analysis unit provided in the external server analyzes the operation history data stored in the data storage unit and calculates parameters necessary for predicting deterioration of the storage battery;
The life prediction determination unit provided in the external server uses the parameters calculated by the operation history data analysis unit and the operation history data received from each storage battery system to determine the life of the storage battery of each storage battery system. and determining the magnitude relationship between the predicted life and the target life;
a step in which the limit value determination unit provided in the external server determines the limit value of the storage battery to be transmitted to each of the storage battery systems based on the magnitude relationship between the predicted life span and the target life span;
having
A control method for a remote monitoring system.
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