JP2010125110A - Electric-motor-driven golf cart - Google Patents

Electric-motor-driven golf cart Download PDF

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JP2010125110A
JP2010125110A JP2008303708A JP2008303708A JP2010125110A JP 2010125110 A JP2010125110 A JP 2010125110A JP 2008303708 A JP2008303708 A JP 2008303708A JP 2008303708 A JP2008303708 A JP 2008303708A JP 2010125110 A JP2010125110 A JP 2010125110A
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golf cart
discharge amount
electric golf
battery
life
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JP5686949B2 (en
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Masayuki Miki
将行 三木
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Yamaha Motor Powered Products Co Ltd
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Yamaha Motor Powered Products Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/66—Data transfer between charging stations and vehicles
    • B60L53/665—Methods related to measuring, billing or payment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L2200/00—Type of vehicles
    • B60L2200/22—Microcars, e.g. golf cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L2250/00—Driver interactions
    • B60L2250/10—Driver interactions by alarm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L2250/00—Driver interactions
    • B60L2250/16—Driver interactions by display
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/80—Other vehicles not covered by groups B60Y2200/10 - B60Y2200/60
    • B60Y2200/86—Carts; Golf carts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric-motor-driven golf cart enabling a life of a battery to be simply and correctly controlled. <P>SOLUTION: The golf cart includes an amount-of-discharge-a-service-cycle calculating part 20d for calculating an amount of discharge of the battery per a service unit in a plurality of service units respectively and a battery life calculating part 20e for calculating a standard amount of discharge from a statistic about an amount of discharge in each service unit calculated by the part 20d and for acquiring the number of charges referring to the life of the battery from the standard amount of the discharge calculated. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は電動ゴルフカートに関し、特に駆動バッテリの寿命管理に関する。   The present invention relates to an electric golf cart, and more particularly to life management of a drive battery.

ゴルフ場では、プレーヤの移動にゴルフカートが用いられることが多い。電動ゴルフカートにはバッテリ及びモータが搭載されており、バッテリから供給される電力により回転するモータが動力源として用いられている。このような電動ゴルフカートは、エンジンを動力源とするものに比して、走行音が小さいという優れた特徴を有している。バッテリは例えば鉛蓄電池、ニッケル水素蓄電池、ニッケルカドミウム蓄電池、リチウムイオン電池などであり、いずれにしても有限の寿命が存在する。このため、バッテリの寿命到来を事前に検知して、電動ゴルフカートの管理者に報知することが望ましい。この点、下記特許文献１には、電気自動車で用いられるバッテリの寿命判定技術が開示されている。この技術によると、バッテリの充放電サイクルのそれぞれについて固有劣化値が決定され、これらの固有劣化値を合計することにより、バッテリの劣化が得られる。
特開２００４−２６４３０３号公報 In golf courses, golf carts are often used to move players. A battery and a motor are mounted on the electric golf cart, and a motor that is rotated by electric power supplied from the battery is used as a power source. Such an electric golf cart has an excellent feature that the running sound is small as compared with the one using an engine as a power source. The battery is, for example, a lead storage battery, a nickel metal hydride storage battery, a nickel cadmium storage battery, a lithium ion battery, or the like, and anyway has a finite lifetime. For this reason, it is desirable to detect the battery life in advance and notify the administrator of the electric golf cart. In this regard, Patent Document 1 below discloses a technique for determining the life of a battery used in an electric vehicle. According to this technique, the inherent deterioration value is determined for each of the charge / discharge cycles of the battery, and the deterioration of the battery is obtained by summing up these specific deterioration values.
JP 2004-264303 A

しかしながら、上記従来技術によると固有劣化値の合計値がバッテリの劣化と見なされるので、個々の固有劣化値に誤差が含まれると、それが蓄積して大きな誤差に繋がるという問題がある。   However, according to the above prior art, since the total value of the inherent deterioration values is regarded as the deterioration of the battery, if there is an error in each individual deterioration value, there is a problem that it accumulates and leads to a large error.

本発明は上記課題に鑑みてなされたものであって、その目的は、簡易且つ正確なバッテリの寿命管理が可能な電動ゴルフカートを提供することにある。   The present invention has been made in view of the above problems, and an object of the present invention is to provide an electric golf cart capable of simple and accurate battery life management.

上記課題を解決するために、本発明に係る電動ゴルフカートは、使用単位あたりのバッテリの放電量を複数回の使用単位のそれぞれについて算出する放電量算出手段と、前記放電量算出手段により算出される各回の使用単位の放電量に関する統計量に基づき、基準放電量を算出する基準放電量算出手段と、前記基準放電量算出手段により算出される基準放電量に基づき、前記バッテリの寿命に係る充電回数を取得する寿命充電回数取得手段と、を含むことを特徴とする。   In order to solve the above problems, an electric golf cart according to the present invention is calculated by a discharge amount calculating means for calculating a discharge amount of a battery per use unit for each of a plurality of use units, and the discharge amount calculating means. A reference discharge amount calculating means for calculating a reference discharge amount based on a statistic regarding the discharge amount of each use unit, and a charge relating to the battery life based on the reference discharge amount calculated by the reference discharge amount calculating means. And a lifetime charge number obtaining means for obtaining the number of times.

また、本発明の一態様に係る電動ゴルフカートにおいては、前記使用単位は、前記バッテリが充電されてから次に充電されるまでの期間である。また、本発明の他の態様に係る電動ゴルフカートは、前記基準放電量算出手段により算出される基準放電量と、前記バッテリの寿命となる充電回数と、の関係を示すデータを記憶するデータ記憶手段を更に含み、前記寿命充電回数取得手段は、前記基準放電量算出手段により算出される基準放電量を前記データ記憶手段に記憶されるデータに照査することにより、当該電動ゴルフカートに搭載される前記バッテリの寿命に係る充電回数を取得する。   In the electric golf cart according to one aspect of the present invention, the use unit is a period from when the battery is charged to when it is charged next. In addition, the electric golf cart according to another aspect of the present invention is a data storage that stores data indicating a relationship between the reference discharge amount calculated by the reference discharge amount calculation means and the number of times of charging that is the life of the battery. The life charging number acquisition means is mounted on the electric golf cart by checking the reference discharge amount calculated by the reference discharge amount calculation means against the data stored in the data storage means. The number of charging times related to the life of the battery is acquired.

また、本発明の更に他の態様に係る電動ゴルフカートは、前記バッテリの充電回数を計数する充電回数計数手段と、前記充電回数計数手段により計数される充電回数と、前記寿命充電回数取得手段により取得される充電回数と、に基づく通知を、ユーザに対して行う通知手段と、をさらに含む。   An electric golf cart according to still another aspect of the present invention includes a charge count counting unit that counts the number of times the battery is charged, a charge count counted by the charge count counting unit, and a life charge count acquisition unit. And a notification means for performing notification based on the acquired number of charging times to the user.

この態様では、前記通知手段は、当該電動ゴルフカートの操作手段に対して所定の操作が行われた場合に、前記充電回数計数手段により計数される充電回数と、前記寿命充電回数取得手段により取得される充電回数と、の比較結果に応じた通知を、ユーザに対して行ってよい。また、前記通知手段は、当該電動ゴルフカートの操作手段に対して所定の操作が行われた場合に、前記充電回数計数手段により計数される充電回数と、前記寿命充電回数取得手段により取得される充電回数と、の比に応じた通知を、ユーザに対して行ってよい。前記通知手段は、前記バッテリの残容量の表示器と用いてユーザに通知を行うようにしてよい。   In this aspect, the notification means is acquired by the charge count counted by the charge count counting means and the lifetime charge count acquisition means when a predetermined operation is performed on the operation means of the electric golf cart. Notification may be made to the user according to the comparison result of the number of times charging is performed. The notification means is acquired by the charge count counted by the charge count counting means and the lifetime charge count acquisition means when a predetermined operation is performed on the operation means of the electric golf cart. You may notify a user according to ratio with the frequency | count of charge. The notification means may notify the user by using an indicator of the remaining capacity of the battery.

以下、本発明の一実施形態について図面に基づき詳細に説明する。   Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

図１は、本発明の実施形態に係る電動ゴルフカートの側面図である。同図に示すように、この電動ゴルフカート１０は、左右それぞれ一対の前輪１２及び後輪１４を備える４輪車両であり、二人用の前部シート２２と三人用の後部シート２４とを備えている。後輪１４はモータ１６により正逆に回転駆動されるようになっており、このモータ１６の駆動電力は後部シート２４の下方に収容された駆動バッテリ１８から供給される。駆動バッテリ１８は、例えば直列接続された複数個の鉛蓄電池である。また、後部シート２４の後方にはマイコンを中心に構成されたコントローラ２０が収容されており、このコントローラ２０により電動ゴルフカート１０の各種装備が制御される。   FIG. 1 is a side view of an electric golf cart according to an embodiment of the present invention. As shown in the figure, the electric golf cart 10 is a four-wheel vehicle including a pair of front wheels 12 and a rear wheel 14 on the left and right sides, and includes a front seat 22 for two people and a rear seat 24 for three people. I have. The rear wheel 14 is driven to rotate forward and backward by a motor 16, and the driving power of the motor 16 is supplied from a driving battery 18 accommodated below the rear seat 24. The drive battery 18 is, for example, a plurality of lead storage batteries connected in series. A controller 20 mainly composed of a microcomputer is accommodated behind the rear seat 24, and various equipment of the electric golf cart 10 is controlled by the controller 20.

前輪１２の向きは、前部シート２２の前方に配置されたステアリングハンドル２６により操作できるようになっている。また、モータ１６の回転速度は、ステアリングハンドル２６の下方に配置された不図示のアクセルペダルにより操作される。走行中にアクセルペダルの踏角が０に戻されると、前輪１２及び後輪１４にディスクブレーキが掛けられるとともに、後輪１４に対してはモータ１６による回生ブレーキも掛けられる。車速が十分に低くなると、モータ１６は後輪１４に対してパーキングブレーキとして電磁ブレーキを掛ける。また、アクセルペダルの横に配置されたブレーキペダル２８が踏まれたときも、前輪１２及び後輪１４に対してディスクブレーキが掛けられる。さらに前部シート２２の下方に配置されたレバー２９によりモータ１６の回転方向が正逆に切り替えられる。前部シート２２の前方には操作パネル３０が設けられており、この操作パネル３０内には後述する残量ＬＥＤ３０ａ及び異常ＬＥＤ３０ｂが収容されており、その近傍にはブザー３０ｃが取り付けられている。   The direction of the front wheel 12 can be operated by a steering handle 26 disposed in front of the front seat 22. The rotational speed of the motor 16 is operated by an accelerator pedal (not shown) arranged below the steering handle 26. When the pedal angle of the accelerator pedal is returned to 0 during traveling, a disc brake is applied to the front wheels 12 and the rear wheels 14, and a regenerative brake by the motor 16 is also applied to the rear wheels 14. When the vehicle speed becomes sufficiently low, the motor 16 applies an electromagnetic brake as a parking brake to the rear wheel 14. Further, when the brake pedal 28 disposed on the side of the accelerator pedal is depressed, the disc brake is applied to the front wheel 12 and the rear wheel 14. Further, the rotation direction of the motor 16 is switched between forward and reverse by a lever 29 disposed below the front seat 22. An operation panel 30 is provided in front of the front seat 22, and a remaining amount LED 30a and an abnormal LED 30b described later are accommodated in the operation panel 30, and a buzzer 30c is attached in the vicinity thereof.

図２は、電動ゴルフカート１０における駆動バッテリ１８の寿命管理に関わる制御ブロック図である。同図に示すように、コントローラ２０には充放電量積算部２０ａ、モータ制御部２０ｂ、充電サイクル演算部２０ｃ、１使用サイクル放電量演算部２０ｄ、バッテリ寿命演算部２０ｅ、残量演算部２０ｆが設けられている。残量演算部２０ｆには寿命表示判定部２０ｇ及びバッテリ残量不足異常判定部２０ｈが含まれる。これらの制御要素は、例えば、マイコンを中心に構成されたコントローラ２０により、その内蔵プログラムが実行されることにより実現される。   FIG. 2 is a control block diagram relating to life management of the drive battery 18 in the electric golf cart 10. As shown in the figure, the controller 20 includes a charge / discharge amount integrating unit 20a, a motor control unit 20b, a charge cycle calculating unit 20c, a use cycle discharge amount calculating unit 20d, a battery life calculating unit 20e, and a remaining amount calculating unit 20f. Is provided. The remaining amount calculation unit 20f includes a life display determination unit 20g and a battery remaining shortage abnormality determination unit 20h. These control elements are realized, for example, by executing a built-in program by the controller 20 mainly composed of a microcomputer.

モータ制御部２０ｂは、駆動バッテリ１８から供給される電力によりモータ１６を回転駆動する。このとき、駆動バッテリ１８の電圧及び電流は充放電量積算部２０ａにより監視されており、該充放電量積算部２０ａは、駆動バッテリ１８の放電量を積算する。放電量の積算値としては、駆動バッテリ１８からモータ１６に供給される放電量のみを積算した値を採用してもよいし、駆動バッテリ１８からモータ１６に供給される放電量を正値とし、逆に回生ブレーキ時にモータ１６から駆動バッテリ１８に供給される充電量を負値とし、これらを符号付きで積算した値を採用してもよい。１使用サイクル放電量演算部２０ｄは、充放電量積算部２０ａにより演算される放電量を用いて、１使用サイクルあたりの放電量を取得し、これを所定の使用サイクル分（ここでは例えば５０回とする。）だけ記憶する。具体的には、１使用サイクル放電量演算部２０ｄは、電動ゴルフカート１０に充電プラグが接続されて、駆動バッテリ１８に充電電圧が加わったことを検知する。そして、駆動バッテリ１８が満充電とされてから次に充電開始されるまでの期間（この期間を「１使用サイクル」という。）の駆動バッテリ１８の放電量の積算値を充放電量積算部２０ａから取得し、これを記憶する。一方、充電サイクル演算部２０ｃは、駆動バッテリ１８の充電回数を計数する。   The motor control unit 20 b rotationally drives the motor 16 with electric power supplied from the drive battery 18. At this time, the voltage and current of the drive battery 18 are monitored by the charge / discharge amount integration unit 20a, and the charge / discharge amount integration unit 20a integrates the discharge amount of the drive battery 18. As the integrated value of the discharge amount, a value obtained by integrating only the discharge amount supplied from the drive battery 18 to the motor 16 may be adopted, or the discharge amount supplied from the drive battery 18 to the motor 16 is set as a positive value. Conversely, the charge amount supplied from the motor 16 to the drive battery 18 during regenerative braking may be a negative value, and a value obtained by integrating these with a sign may be employed. The one use cycle discharge amount calculation unit 20d acquires the discharge amount per use cycle by using the discharge amount calculated by the charge / discharge amount integration unit 20a, and obtains the discharge amount for a predetermined use cycle (here, for example, 50 times). Only). Specifically, the one-use cycle discharge amount calculation unit 20 d detects that a charging plug is connected to the electric golf cart 10 and a charging voltage is applied to the driving battery 18. Then, the integrated value of the discharge amount of the drive battery 18 during the period from when the drive battery 18 is fully charged until the next charging is started (this period is referred to as “one use cycle”) is the charge / discharge amount integration unit 20a. Get it from and remember this. On the other hand, the charge cycle calculation unit 20 c counts the number of times the drive battery 18 is charged.

バッテリ寿命演算部２０ｅは、１使用サイクル放電量演算部２０ｄに記憶される所定の使用サイクル分の放電量を足し合わせ、それを充電サイクル演算部２０ｃで計数された充電回数（ここでは５０回）で除し、１使用サイクルあたりの平均放電量を算出する。ここでは、この平均放電量を基準放電量と呼ぶ。なお、１使用サイクル放電量演算部２０ｄは、記憶された所定使用サイクル分の放電量のうち最大量を基準放電量としたり、最大量と最小量との中間値を基準放電量としたりするなど、他の統計量を基準放電量としてもよい。バッテリ寿命演算部２０ｅは、こうして算出される基準放電量に基づき、駆動バッテリ１８が寿命を迎える充電回数（寿命充電サイクル）を決定する。具体的には、バッテリ寿命演算部２０ｅは、図３に示すように、基準放電量（Ａｈ）と寿命充電サイクル（回）との関係を示すテーブルを記憶しており、上記のようにして算出される基準放電量に対応する寿命充電サイクルを該テーブルから取得する。   The battery life calculation unit 20e adds the discharge amounts for a predetermined use cycle stored in the one use cycle discharge amount calculation unit 20d, and the number of times of charging (here, 50 times) counted by the charge cycle calculation unit 20c. The average discharge amount per usage cycle is calculated. Here, this average discharge amount is referred to as a reference discharge amount. The one use cycle discharge amount calculation unit 20d sets the maximum amount of the stored discharge amounts for the predetermined use cycle as the reference discharge amount, or sets the intermediate value between the maximum amount and the minimum amount as the reference discharge amount. Other statistics may be used as the reference discharge amount. The battery life calculation unit 20e determines the number of times that the drive battery 18 reaches the end of life (life charge cycle) based on the reference discharge amount thus calculated. Specifically, as shown in FIG. 3, the battery life calculation unit 20e stores a table indicating the relationship between the reference discharge amount (Ah) and the life charge cycle (times), and is calculated as described above. A life charge cycle corresponding to the reference discharge amount is obtained from the table.

残量演算部２０ｆは、充放電量積算部２０ａにより積算される駆動バッテリ１８の放電量に従って、駆動バッテリ１８の残容量を判断する。そして、この判断に従って残容量の表示器である残量ＬＥＤ３０ａを点灯させる。具体的には、残量ＬＥＤ３０ａは所定個数のＬＥＤから構成されており、残容量が減るに従って点灯数を減らす。寿命表示判定部２０ｇは、バッテリ寿命演算部２０ｅから通知される寿命充電サイクルと、充電サイクル演算部２０ｃから通知される、駆動バッテリ１８の使用を開始してから現在までの充電サイクル（通算充電サイクル）と、に従って、残量ＬＥＤ３０ａを用いた残り寿命表示を行う。この表示は、操作パネル３０に配置された各種ボタンやブレーキペダル２８が特定の手順にて操作されたときのみ行われるようにしてよい。残り寿命表示は、例えば寿命充電サイクルと通算充電サイクルとの比に応じた個数のＬＥＤを点灯させることにより行う。また、寿命表示判定部２０ｇは、寿命充電サイクルよりも通算充電サイクルが大きくなると、寿命警告を残量ＬＥＤ３０ａを用いて行う。例えば、電動ゴルフカート１０の電源をオンしたときに残量ＬＥＤ３０ａを点滅させることにより、寿命到来を通知する。バッテリ残量不足異常判定部２０ｈは、駆動バッテリ１８が異常電圧を示したとき、異常ＬＥＤ３０ｂを点灯させたり、ブザー３０ｃを鳴動させたりする。   The remaining amount calculation unit 20f determines the remaining capacity of the drive battery 18 according to the discharge amount of the drive battery 18 accumulated by the charge / discharge amount accumulation unit 20a. Then, according to this determination, the remaining amount LED 30a which is an indicator of the remaining capacity is turned on. Specifically, the remaining amount LED 30a is composed of a predetermined number of LEDs, and the number of lighting is reduced as the remaining capacity decreases. The life display determination unit 20g includes a life charge cycle notified from the battery life calculation unit 20e and a charge cycle (total charge cycle) notified from the charge cycle calculation unit 20c to the present after the start of use of the drive battery 18. ), The remaining life display using the remaining amount LED 30a is performed. This display may be performed only when various buttons and the brake pedal 28 arranged on the operation panel 30 are operated in a specific procedure. The remaining life display is performed, for example, by lighting a number of LEDs corresponding to the ratio of the life charge cycle and the total charge cycle. The life display determination unit 20g performs a life warning using the remaining amount LED 30a when the total charge cycle becomes larger than the life charge cycle. For example, when the power of the electric golf cart 10 is turned on, the remaining amount LED 30a is blinked to notify the end of life. The battery remaining shortage abnormality determination unit 20h turns on the abnormality LED 30b or rings the buzzer 30c when the drive battery 18 indicates an abnormal voltage.

図４は、コントローラ２０における寿命充電サイクルを決定する処理を示すフロー図である。この処理は、未使用の駆動バッテリ１８が電動ゴルフカート１０に搭載され、コントローラ２０に初期化動作が指示された場合に実行される。まず、１使用サイクル放電量演算部２０ｄは、駆動バッテリ１８の充電完了を検知する（Ｓ１０１）。例えば駆動バッテリ１８を流れる充電電流が微弱になったこと、或いは駆動バッテリ１８の電圧が所定電圧にまで上がったことにより、充電完了を判断する。そして、変数である充電完了回数を１だけインクリメントする（Ｓ１０２）。さらに、充放電量積算部２０ａに記憶されている積算された放電量を０に初期化する（Ｓ１０３）。そして、次に駆動バッテリ１８の充電が開始されるまで（Ｓ１０５）、充放電量積算部２０ａは駆動バッテリ１８の走行中の放電量を積算する（Ｓ１０４）。その後、駆動バッテリ１８の充電が開始されると（Ｓ１０５）、１使用サイクル放電量演算部２０ｄは、変数である充電開始回数を１だけインクリメントする（Ｓ１０６）。さらに、充放電量積算部２０ａで積算されている放電量を取得し、これを記憶する。さらに、変数である保存データ数を１だけインクリメントする（Ｓ１０７）。保存データ数が５０に達するまでは（Ｓ１０８）、Ｓ１０９乃至Ｓ１１１の処理をスキップし、駆動バッテリ１８の充電を開始する（Ｓ１１２）。一方、保存データ数が５０に達していれば、バッテリ寿命演算部２０ｅが１使用サイクル放電量演算部２０ｄに記憶されている５０個の放電量の平均値を算出し、基準放電量を取得する（Ｓ１０９）。そして、この基準放電量を図３に示されるテーブルに照査して、寿命充電サイクルを取得する（Ｓ１１０）。そして、１使用サイクル放電量演算部２０ｄに記憶される保存データ数を０にクリアする（Ｓ１１１）。   FIG. 4 is a flowchart showing a process for determining the life charge cycle in the controller 20. This process is executed when an unused drive battery 18 is mounted on the electric golf cart 10 and an initialization operation is instructed to the controller 20. First, the one-use cycle discharge amount calculation unit 20d detects completion of charging of the drive battery 18 (S101). For example, the completion of charging is determined when the charging current flowing through the driving battery 18 has become weak or the voltage of the driving battery 18 has increased to a predetermined voltage. Then, the number of charge completions, which is a variable, is incremented by 1 (S102). Further, the accumulated discharge amount stored in the charge / discharge amount accumulation unit 20a is initialized to 0 (S103). Then, until charging of the drive battery 18 is next started (S105), the charge / discharge amount accumulating unit 20a accumulates the discharge amount during travel of the drive battery 18 (S104). After that, when charging of the drive battery 18 is started (S105), the one-use cycle discharge amount calculation unit 20d increments the number of charge start times as a variable by 1 (S106). Furthermore, the discharge amount accumulated by the charge / discharge amount accumulation unit 20a is acquired and stored. Further, the number of saved data that is a variable is incremented by 1 (S107). Until the number of stored data reaches 50 (S108), the processing of S109 to S111 is skipped and charging of the drive battery 18 is started (S112). On the other hand, if the number of stored data has reached 50, the battery life calculation unit 20e calculates the average value of the 50 discharge amounts stored in the one use cycle discharge amount calculation unit 20d, and acquires the reference discharge amount. (S109). Then, this reference discharge amount is checked against the table shown in FIG. 3 to obtain a life charge cycle (S110). Then, the number of stored data stored in the one use cycle discharge amount calculation unit 20d is cleared to 0 (S111).

図５は、残量ＬＥＤ３０ａにより寿命表示を行う処理を示すフロー図である。同図に示す処理は電動ゴルフカート１０の図示しない電源ボタンがオンされたときに実行されるものである。まず、電源がオンされると（Ｓ２０１）、寿命表示判定部２０ｇは、充電サイクルを演算する（Ｓ２０２）。充電サイクルは、図４のＳ１０２で更新される充電完了回数と、同図のＳ１０６で更新される充電開始回数の平均値である。なお、充電完了回数そのものを充電サイクルとしてもよいし、充電開始回数そのものを充電サイクルとしてもよい。次に、Ｓ２０２で算出される充電サイクルが、図４のＳ１１０で算出される寿命充電サイクルよりも大きいか否かを判断する（Ｓ２０３）。そして、大きければ寿命表示を実施する（Ｓ２０４）。具体的には、残量ＬＥＤ３０ａに含まれる全部のＬＥＤを所定時間だけ点滅させる。一方、充電サイクルが寿命充電サイクル以下であれば、Ｓ２０４の処理をスキップし、残量演算部２０ｆが残量ＬＥＤ３０ａを用いて駆動バッテリ１８の残量表示を行う（Ｓ２０５）。その後、操作パネル３０に配置された各種ボタンやブレーキペダル２８が特定の手順にて操作されたか否かを監視し（Ｓ２０６）、そのような操作が行われると、Ｓ２０２で算出される充電サイクルと、図４のＳ１１０で算出される寿命充電サイクルとの比に応じた個数だけ、残量ＬＥＤ３０ａに含まれるＬＥＤを所定時間だけ点灯させ（Ｓ２０７）、再びＳ２０５に戻る。   FIG. 5 is a flowchart showing a process for displaying the life by the remaining amount LED 30a. The process shown in the figure is executed when a power button (not shown) of the electric golf cart 10 is turned on. First, when the power is turned on (S201), the life display determination unit 20g calculates a charge cycle (S202). The charge cycle is an average value of the number of charge completions updated in S102 of FIG. 4 and the number of charge start times updated in S106 of FIG. It should be noted that the number of completions of charging itself may be a charging cycle, or the number of charging starts itself may be a charging cycle. Next, it is determined whether or not the charge cycle calculated in S202 is larger than the life cycle calculated in S110 of FIG. 4 (S203). If it is larger, the life display is performed (S204). Specifically, all the LEDs included in the remaining amount LED 30a are blinked for a predetermined time. On the other hand, if the charge cycle is equal to or less than the life charge cycle, the process of S204 is skipped, and the remaining amount calculation unit 20f displays the remaining amount of the drive battery 18 using the remaining amount LED 30a (S205). Thereafter, it is monitored whether or not various buttons and the brake pedal 28 arranged on the operation panel 30 are operated in a specific procedure (S206). When such an operation is performed, the charging cycle calculated in S202 is determined. The LEDs included in the remaining amount LED 30a are lit for a predetermined time by the number corresponding to the ratio to the life charge cycle calculated in S110 of FIG. 4 (S207), and the process returns to S205 again.

以上説明した電動ゴルフカート１０によると、初期の５０回分の使用サイクルでの放電量の実績に基づき、当該電動ゴルフカート１０に搭載された駆動バッテリ１８の寿命充電サイクルを適切に決定することができる。電動ゴルフカート１０は、１つのゴルフコースを１日決まった回数（通常は１回）だけ走行し、その後、翌日に備えて充電されるという、決まったパターンの使われ方をしており、各使用サイクルにおける放電量は、ゴルフコースの起伏などによって決まる、概ね一定量である。また、駆動バッテリ１８の寿命は各使用サイクルにおける放電量に大きく依存する。そこで、本実施形態では、所定数の使用サイクルでの放電量から基準放電量を算出し、そこから寿命充電サイクルを決定している。そして、充電サイクル（使用サイクル）と寿命充電サイクルとの比較により、寿命表示を行っている。こうすることで、電動ゴルフカート１０の駆動バッテリ１８の寿命を簡易且つ正確に管理できる。   According to the electric golf cart 10 described above, the life charge cycle of the drive battery 18 mounted on the electric golf cart 10 can be appropriately determined based on the actual amount of discharge in the initial 50 use cycles. . The electric golf cart 10 uses a predetermined pattern in which a golf course is run a predetermined number of times a day (usually once) and then charged for the next day. The amount of discharge in the use cycle is a substantially constant amount determined by the undulation of the golf course. Further, the life of the drive battery 18 greatly depends on the amount of discharge in each use cycle. Therefore, in this embodiment, the reference discharge amount is calculated from the discharge amount in a predetermined number of use cycles, and the life charge cycle is determined therefrom. The life display is performed by comparing the charge cycle (use cycle) and the life charge cycle. By doing so, the life of the drive battery 18 of the electric golf cart 10 can be managed easily and accurately.

本発明の実施形態に係る電動ゴルフカートの側面図である。1 is a side view of an electric golf cart according to an embodiment of the present invention. 寿命管理に関わる制御ブロック図である。It is a control block diagram related to life management. 寿命管理のためのテーブルを示す図である。It is a figure which shows the table for lifetime management. 寿命充電サイクルを決定する処理を示すフロー図である。It is a flowchart which shows the process which determines a lifetime charge cycle. 寿命表示を行う処理を示すフロー図である。It is a flowchart which shows the process which performs a lifetime display.

符号の説明Explanation of symbols

１０ 電動ゴルフカート、１２ 前輪、１４ 後輪、１６ モータ、１８ 駆動バッテリ、２０ コントローラ、２２ 前部シート、２４ 後部シート、２６ ステアリングハンドル、２８ アクセルペダル、２９ レバー、３０ 操作パネル。   DESCRIPTION OF SYMBOLS 10 Electric golf cart, 12 Front wheel, 14 Rear wheel, 16 Motor, 18 Drive battery, 20 Controller, 22 Front seat, 24 Rear seat, 26 Steering handle, 28 Accelerator pedal, 29 Lever, 30 Operation panel.

Claims (7)

使用単位あたりのバッテリの放電量を複数回の使用単位のそれぞれについて算出する放電量算出手段と、
前記放電量算出手段により算出される各回の使用単位の放電量に関する統計量に基づき、基準放電量を算出する基準放電量算出手段と、
前記基準放電量算出手段により算出される基準放電量に基づき、前記バッテリの寿命に係る充電回数を取得する寿命充電回数取得手段と、
を含むことを特徴とする電動ゴルフカート。 A discharge amount calculating means for calculating the discharge amount of the battery per unit of use for each of a plurality of use units;
A reference discharge amount calculating means for calculating a reference discharge amount based on a statistic regarding the discharge amount of each use unit calculated by the discharge amount calculating means;
Based on the reference discharge amount calculated by the reference discharge amount calculation means, the life charge number acquisition means for acquiring the number of charges related to the life of the battery;
An electric golf cart comprising: 請求項１に記載の電動ゴルフカートにおいて、
前記使用単位は、前記バッテリが充電されてから次に充電されるまでの期間である、
ことを特徴とする電動ゴルフカート。 The electric golf cart according to claim 1,
The unit of use is a period from when the battery is charged to when it is charged next.
An electric golf cart characterized by that. 請求項１又は２に記載の電動ゴルフカートにおいて、
前記基準放電量算出手段により算出される基準放電量と、前記バッテリの寿命となる充電回数と、の関係を示すデータを記憶するデータ記憶手段を更に含み、
前記寿命充電回数取得手段は、前記基準放電量算出手段により算出される基準放電量を前記データ記憶手段に記憶されるデータに照査することにより、当該電動ゴルフカートに搭載される前記バッテリの寿命に係る充電回数を取得する、
ことを特徴とする電動ゴルフカート。 In the electric golf cart according to claim 1 or 2,
Data storage means for storing data indicating a relationship between the reference discharge amount calculated by the reference discharge amount calculation means and the number of times of charging that is the life of the battery;
The lifetime charge frequency acquisition means checks the reference discharge amount calculated by the reference discharge amount calculation means against the data stored in the data storage means, thereby increasing the lifetime of the battery mounted on the electric golf cart. To get the number of charging times,
An electric golf cart characterized by that. 請求項１乃至３のいずれかに記載の電動ゴルフカートにおいて、
前記バッテリの充電回数を計数する充電回数計数手段と、
前記充電回数計数手段により計数される充電回数と、前記寿命充電回数取得手段により取得される充電回数と、に基づく通知を、ユーザに対して行う通知手段と、
をさらに含むことを特徴とする電動ゴルフカート。 In the electric golf cart according to any one of claims 1 to 3,
Charging number counting means for counting the number of times the battery is charged;
A notification means for performing notification to the user based on the number of times of charging counted by the number of times of charging counting means and the number of times of charging acquired by the means for acquiring the number of times of life charging;
An electric golf cart further comprising: 請求項４に記載の電動ゴルフカートにおいて、
前記通知手段は、当該電動ゴルフカートの操作手段に対して所定の操作が行われた場合に、前記充電回数計数手段により計数される充電回数と、前記寿命充電回数取得手段により取得される充電回数と、の比較結果に応じた通知を、ユーザに対して行う、
ことを特徴とする電動ゴルフカート。 The electric golf cart according to claim 4,
The notification means includes a charge count counted by the charge count counting means and a charge count acquired by the lifetime charge count acquisition means when a predetermined operation is performed on the operation means of the electric golf cart. And notify the user according to the comparison result of
An electric golf cart characterized by that. 請求項４又は５に記載の電動ゴルフカートにおいて、
前記通知手段は、当該電動ゴルフカートの操作手段に対して所定の操作が行われた場合に、前記充電回数計数手段により計数される充電回数と、前記寿命充電回数取得手段により取得される充電回数と、の比に応じた通知を、ユーザに対して行う、
ことを特徴とする電動ゴルフカート。 In the electric golf cart according to claim 4 or 5,
The notification means includes a charge count counted by the charge count counting means and a charge count acquired by the lifetime charge count acquisition means when a predetermined operation is performed on the operation means of the electric golf cart. And notify the user according to the ratio of
An electric golf cart characterized by that. 請求項５又は６に記載の電動ゴルフカートにおいて、
前記通知手段は、前記バッテリの残容量の表示器と用いてユーザに通知を行う、
ことを特徴とする電動ゴルフカート。 The electric golf cart according to claim 5 or 6,
The notification means notifies the user using an indicator of the remaining capacity of the battery.
An electric golf cart characterized by that.
JP2008303708A 2008-11-28 2008-11-28 Electric golf cart Expired - Fee Related JP5686949B2 (en)

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