JP2675875B2 - Battery residual capacity display device for electric vehicles - Google Patents
Battery residual capacity display device for electric vehiclesInfo
- Publication number
- JP2675875B2 JP2675875B2 JP1270855A JP27085589A JP2675875B2 JP 2675875 B2 JP2675875 B2 JP 2675875B2 JP 1270855 A JP1270855 A JP 1270855A JP 27085589 A JP27085589 A JP 27085589A JP 2675875 B2 JP2675875 B2 JP 2675875B2
- Authority
- JP
- Japan
- Prior art keywords
- battery
- remaining capacity
- capacity
- electric vehicle
- remaining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電気自動車等の電気車両のバッテリ残存容量
表示装置の改良に係り、詳しくは同電気車両の実走行状
態等に応じて正確なバッテリ残存容量を表示し得る電気
車両のバッテリ残存容量表示装置に関する。Description: TECHNICAL FIELD The present invention relates to an improvement in a battery remaining capacity display device for an electric vehicle such as an electric vehicle, and more specifically, to an accurate battery according to the actual running state of the electric vehicle. The present invention relates to a battery remaining capacity display device for an electric vehicle that can display the remaining capacity.
従来、試作的に製作された電気車両の残走行距離計と
して、バッテリ電圧等を監視してバッテリの残存容量が
半分になったときに残走行距離を表示し、それ以後、こ
の残走行距離から電気車両の実走行距離を減じて表示す
るようにしたものがあった。Conventionally, as a remaining mileage meter of a prototype electric vehicle, the remaining mileage is displayed when the remaining capacity of the battery is halved by monitoring the battery voltage, etc. In some cases, the actual mileage of an electric vehicle is reduced and displayed.
〔発明が解決しようとする課題〕 ところで、電気車両は、平坦な道のみならず上り坂道
等も走行する。一般に、電気車両が上り坂道等を走行す
るときの実走行電力消費量は、平坦な道を走行するとき
の実走行電力消費量よりも大きい。[Problems to be Solved by the Invention] By the way, an electric vehicle runs not only on a flat road but also on an uphill road. Generally, the actual traveling power consumption when an electric vehicle travels on an uphill road is larger than the actual traveling power consumption when traveling on a flat road.
即ち、電気車両におけるバッテリの残存容量や残走行
距離は実走行距離のみならず、上述した電気車両の実走
行状態に大きく依存する。That is, the remaining capacity of the battery and the remaining traveling distance of the electric vehicle depend not only on the actual traveling distance but also on the actual traveling state of the electric vehicle described above.
また、上述したような残走行距離計では、実走行距離
の減算だけが行われるのでバッテリの残存容量を正確に
計算することができず、当然ながら残存容量表示を行う
こともできなかった。Further, in the remaining mileage meter as described above, since the actual mileage is only subtracted, the remaining capacity of the battery cannot be accurately calculated, and naturally the remaining capacity cannot be displayed.
また、バッテリの残存容量はガソリン車の燃料計のよ
うに電気車両の運転者にとって極めて重要な情報である
が、上記のように残存容量がわからないか、又は実走行
状態を加味しない不正確なものであっては、電気車両を
安心して走らせることができず極めて不便であった。Also, the remaining capacity of the battery is extremely important information for the driver of the electric vehicle such as the fuel gauge of a gasoline vehicle, but as described above, the remaining capacity is not known or is inaccurate without considering the actual driving state. However, it was extremely inconvenient because the electric vehicle could not be run safely.
従って、本発明は走行開始時からバッテリ残存容量を
表示すると共に電気車両の実走行状態に応じて正確にバ
ッテリ残存容量を演算し得るようにした電気車両のバッ
テリ残存容量表示装置を提供することを目的としてなさ
れたものである。Therefore, the present invention provides a battery remaining capacity display device for an electric vehicle that displays the battery remaining capacity from the start of traveling and that can accurately calculate the battery remaining capacity according to the actual traveling state of the electric vehicle. It was done for the purpose.
上記目的を達成するために本発明はバッテリにより駆
動される電気車両のバッテリ残存容量表示装置におい
て、所定距離走行毎にバッテリ残存容量を繰り返し更新
して表示する残存容量表示手段と、上記電気車両が停止
したときのバッテリ電圧を検出して停止時バッテリ残存
容量を求める停止時残存容量検出手段と、上記所定距離
走行する間の電流を積算してその間のバッテリの消費容
量を求める消費容量検出手段と、上記残存容量表示手段
により表示された前回更新のバッテリ残存容量と上記バ
ッテリ消費容量とに基づいて実走修正バッテリ残容量を
求め、該実走修正バッテリ残容量と上記停止時バッテリ
残存容量に基づいて新たに表示すべきバッテリ残存容量
を求める残存容量演算手段とを具備してなることを特徴
とする電気車両のバッテリ残存容量表示装置として構成
されている。To achieve the above object, the present invention provides a battery remaining capacity display device for an electric vehicle driven by a battery, wherein the remaining capacity display means for repeatedly updating and displaying the battery remaining capacity for each predetermined distance travel, and the electric vehicle A remaining capacity detecting means for detecting a remaining battery capacity when the battery voltage is stopped and a remaining capacity detecting means for calculating a remaining battery capacity during the predetermined distance. , The actual running corrected battery remaining capacity is obtained based on the previously updated battery remaining capacity displayed by the remaining capacity displaying means and the battery consumption capacity, and based on the actual running corrected battery remaining capacity and the stopped battery remaining capacity. And a battery remaining capacity calculation means for obtaining a battery remaining capacity that should be newly displayed. It is configured as Li residual capacity display device.
この電気車両のバッテリ残存容量表示装置では、残存
容量表示手段により表示された前回更新のバッテリ残存
容量と、消費容量検出手段により求められた所定距離走
行する間のバッテリ消費容量とに基づいて実走行修正バ
ッテリ残容量が求められる。In this battery remaining capacity display device for an electric vehicle, the actual running is performed based on the previously updated battery remaining capacity displayed by the remaining capacity display means and the battery consumption capacity during the predetermined distance determined by the consumption capacity detection means. Corrected battery remaining capacity is required.
従って、それまで走って来た道路の状態（道路が平坦
か坂道か等）に応じて即ち、走行実績を加味してバッテ
リの消費具合が演算される。Therefore, the battery consumption is calculated according to the state of the road that has been running (whether the road is flat or a slope), that is, in consideration of the running record.
そして、この実走修正バッテリ残容量と、停止時残存
容量検出手段により求めらた停止時バッテリ残存容量に
基づいて、残存容量演算手段により新たなバッテリ残存
容量が求められる。従って上記走行実績とバッテリの現
在残存容量の両面からバッテリ残存容量が修正される。Then, based on this actual running corrected battery remaining capacity and the remaining battery capacity during stop determined by the remaining capacity detection device during stop, a new remaining battery capacity is calculated by the remaining capacity calculation device. Therefore, the battery remaining capacity is corrected from both aspects of the above-mentioned running record and the current remaining capacity of the battery.
上記のようなバッテリ残存容量は、残存容量表示手段
により逐次更新されて表示される。The battery remaining capacity as described above is sequentially updated and displayed by the remaining capacity display means.
以下、添付図面を参照して、本発明を具体化した実施
例につき説明し、本発明の理解に供する。尚、以下の実
施例は本発明を具体化した一例であって、本発明の技術
的範囲を限定する性格のものではない。Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. The following embodiments are mere examples embodying the present invention, and do not limit the technical scope of the present invention.
第１図は本発明の一実施例に係る電気車両のバッテリ
残存容量表示装置を示すブロック図、第２図は同バッテ
リ残存容量表示装置のバッテリ残存容量演算処理の一例
を示すフローチャート、第３図は同バッテリ残存容量表
示装置の電気車両停止時のバッテリ電圧と停止時バッテ
リ残存容量との関係を示すグラフ、第４図は同バッテリ
残存容量表示装置の停止時バッテリ残存容量と当該電気
車両の残走行距離との関係を示すグラフ、第５図は同バ
ッテリ残存容量表示装置の当該電気車両のバッテリ温度
と残走行距離の修正係数との関係の一例を示すグラフで
ある。FIG. 1 is a block diagram showing a battery remaining capacity display device for an electric vehicle according to an embodiment of the present invention, FIG. 2 is a flowchart showing an example of a battery remaining capacity calculation process of the battery remaining capacity display device, and FIG. FIG. 4 is a graph showing the relationship between the battery voltage when the electric vehicle is stopped and the remaining battery capacity when the electric vehicle is stopped, and FIG. 4 is the remaining battery capacity when the electric vehicle is stopped and the remaining capacity of the electric vehicle. FIG. 5 is a graph showing the relationship with the travel distance, and FIG. 5 is a graph showing an example of the relationship between the battery temperature of the electric vehicle and the correction coefficient of the remaining travel distance of the battery remaining capacity display device.
第１図に示すこの電気車両のバッテリ残存容量表示装
置１は、マイクロコンピュータCPU及びメモリ2a,2b等か
らなる制御部２を中心として構成され、この制御部２
に、電気車両のバッテリ残存容量および残走行距離を表
示する表示部3,バッテリ４の電圧を検出する電圧検出回
路5,バッテリ４の電流を検出する電流検出回路6,バッテ
リ４の温度を検出する温度センサ7,この電気車両の走行
距離を検出する距離センサ８等が接続されている。A battery remaining capacity display device 1 of this electric vehicle shown in FIG. 1 is mainly composed of a control unit 2 including a microcomputer CPU and memories 2 a and 2 b.
In addition, a display unit 3 that displays the remaining battery capacity and the remaining travel distance of the electric vehicle, a voltage detection circuit 5 that detects the voltage of the battery 4, a current detection circuit 6 that detects the current of the battery 4, and the temperature of the battery 4 are detected. A temperature sensor 7, a distance sensor 8 for detecting the traveling distance of this electric vehicle, etc. are connected.
上記メモリ2aは、この電気車両が停止したときのバッ
テリ４の電圧Viと停止時バッテリ残存容量との関係（第
３図），停止時バッテリ残存容量とこの電気車両の残走
行距離との関係（第４図），およびバッテリ４の温度と
残走行距離の修正係数との関係（第５図）等の各種デー
タをあらかじめ記憶している。The memory 2a has a relationship between the voltage Vi of the battery 4 when the electric vehicle is stopped and the remaining battery capacity when stopped (FIG. 3), and the relationship between the remaining battery capacity when stopped and the remaining travel distance of this electric vehicle. (FIG. 4) and various data such as the relationship between the temperature of the battery 4 and the correction coefficient of the remaining travel distance (FIG. 5) are stored in advance.
また、上記電圧検出回路５によって検出されたバッテ
リ４の電圧データ，電流検出回路６によって検出された
電流データ，距離センサ８によって検出された電気車両
の走行距離データ，温度センサ７によって検出された温
度データ等は上記メモリ2bに一時記憶される。Further, the voltage data of the battery 4 detected by the voltage detection circuit 5, the current data detected by the current detection circuit 6, the traveling distance data of the electric vehicle detected by the distance sensor 8, and the temperature detected by the temperature sensor 7. The data and the like are temporarily stored in the memory 2b .
上記メモリ2bに一時記憶された電圧データおよび上記
メモリ2aに記憶されている各種データ等に基づいて、こ
の電気車両のバッテリ残存容量および残走行距離が後述
するように所定距離走行毎に繰り返し求められ、表示部
３に更新されて表示される。Based on the various data stored in the memory 2 b in the temporary storage voltage data and the memory 2 a, repeated every predetermined distance running as the battery remaining capacity and the remaining travel distance of the electric vehicle is described below It is obtained and updated and displayed on the display unit 3.
上述した所定距離走行毎にバッテリ残存容量を繰り返
し更新して表示部３が残存容量表示手段の一例である。The display unit 3 is an example of the remaining capacity display unit that repeatedly updates the battery remaining capacity every time the vehicle travels for a predetermined distance.
次に、第２図を参照してこのバッテリ残存容量表示装
置１のバッテリ残存容量演算処理手順についてステップ
S1,S2…の順に説明する。Next, with reference to FIG. 2, step of the battery remaining capacity calculation processing procedure of the battery remaining capacity display device 1 will be described.
It will be described in the order of S1, S2 ....
電気車両のバッテリ４が充電された後の初動前あるい
は走行開始前の電気車両が停止している状態で、所定起
動操作がなされると、電流検出回路６によりバッテリ４
の電流が検出され（S1）、電流が流れていなければ電圧
検出回路５により停止時電圧Vi（例えば127V）が検出さ
れメモリ2bに記憶される（S2）。When a predetermined starting operation is performed in a state where the electric vehicle before the initial operation after the battery 4 of the electric vehicle is charged or before the start of traveling is stopped, the battery 4 is detected by the current detection circuit 6.
Current is detected in (S1), shutdown voltage Vi by the voltage detection circuit 5 if no current flows (e.g., 127 V) is stored in the detected memory 2 b (S2).
そして、この停止時電圧データ127Vおよびメモリ2aの
記憶データに基づいて（第３図）停止時バッテリ残存容
量QS（例えば120Ah）が求められて表示部３に表示され
る（S3）。Then, based on the voltage data 127V during stop and the data stored in the memory 2a (FIG. 3), the remaining battery capacity QS during stop (for example, 120Ah) is obtained and displayed on the display unit 3 (S3).
このように、このバッテリ残存容量表示装置１では、
走行開始時からバッテリ残存容量が表示されるので、運
転者は任意の時にバッテリ残存容量を確認できる。Thus, in the battery remaining capacity display device 1,
Since the battery remaining capacity is displayed from the start of traveling, the driver can check the battery remaining capacity at any time.
上述した停止時バッテリ残存容量QSを求める機能を実
現する手段が停止時残存容量検出手段の一例である。The means for realizing the above-described function for obtaining the remaining battery capacity QS during stoppage is an example of the remaining capacity detection means during stoppage.
上記初動前あるいは走行開始前は電気車両のバッテリ
温度等は例えば25℃で低く安定した状態であり、第３図
に示す関係が再現性よく成立するので、上記表示された
バッテリ残存容量は正確なものとなる。Before the initial operation or before the start of running, the battery temperature of the electric vehicle is stable at a low temperature of, for example, 25 ° C., and the relationship shown in FIG. 3 is established with good reproducibility. Therefore, the battery remaining capacity displayed above is accurate. Will be things.
そして、上記バッテリ残存容量（120Ah）およびメモ
リ2aの記憶データに基づいて（第４図）この電気車両の
残走行距離LS（60km）が求められて表示部３に表示され
る（S4）。Then, the remaining running distance LS (60 km) of this electric vehicle is calculated based on the remaining battery capacity (120 Ah) and the data stored in the memory 2a (FIG. 4) and displayed on the display unit 3 (S4).
上記バッテリ残存容量が正確であるから上記表示され
た残走行距離LSも正確なものとなる。Since the battery remaining capacity is accurate, the displayed remaining travel distance LS is also accurate.
また、上述したように走行開始時から残走行距離LSが
表示されるので常に目標地まで行きつけるかがチェック
できる。Further, as described above, since the remaining travel distance LS is displayed from the start of traveling, it is possible to always check whether or not the vehicle can reach the destination.
次に、この電気車両の走行が開始されると（S5）、バ
ッテリ４の電流データが制御部２によって積算される
（S6）。Next, when the running of the electric vehicle is started (S5), the current data of the battery 4 is integrated by the control unit 2 (S6).
一方、所定距離（例えば1km）走行中に電気車両が停
止すると、その時のバッテリ４の電圧が検出され、前記
メモリ2bに記憶された停止時電圧Viが新しい電圧データ
に書き替えられる（S7）。On the other hand, when the electric vehicle stops in a given distance (e.g. 1km) running, is detected voltage of the battery 4 at that time, the memory 2 b to the stored stop voltage Vi is rewritten to a new voltage data (S7) .
そして、この電気車両が例えば平坦な道を所定距離、
例えば1km走行すると、この1kmの走行により消費したバ
ッテリ４の積算電流値であるバッテリの消費容量QI
1（例えば2Ah）が制御部２により求められる（S8）。And this electric vehicle, for example, on a flat road for a predetermined distance,
For example, when traveling 1 km, the battery consumption capacity QI which is the integrated current value of the battery 4 consumed by traveling 1 km
1 (for example, 2 Ah) is obtained by the control unit 2 (S8).
上記のように求められた消費容量QI1はこの電気車両
の上記実走行状態（この場合平坦な道）に応じた値とな
る。The consumed capacity QI 1 obtained as described above has a value corresponding to the actual traveling state of the electric vehicle (in this case, a flat road).
上述した所定距離走行する間電流を積算してその間の
バッテリ４の消費容量を求める機能を実現する手段が消
費容量検出手段の一例である。An example of the consumed capacity detecting means is means for realizing the function of accumulating the current while traveling for the predetermined distance and obtaining the consumed capacity of the battery 4 during the traveling.
そして、前回表示されたバッテリ残存容量QS（120A
h）と上記バッテリ消費容量QI1（2Ah）とに基づいて実
走修正バッテリ残容量QA1が次式により求められる（S
9）。Then, the remaining battery capacity QS (120A
h) and the above battery consumption capacity QI 1 (2Ah), the actual running correction battery remaining capacity QA 1 is calculated by the following formula (S
9).
QA1＝QS−QI1 ＝120−２ ＝118〔Ah〕 一方、上記のような走行中に電気車両が停止する度に
上記S7で書き替えられた最新の停止時電圧Vi（例えば12
5V）およびメモリ2aの記憶データに基づいて（第３
図）、停止時バッテリ残存容量QJ1（116Ah）が求められ
る（S10）（前記停止時残存容量検出手段）。 QA 1 = QS-QI 1 = 120-2 = 118 [Ah] Meanwhile, the latest shutdown voltage Vi (e.g., 12 to electric vehicles has been rewritten by the S7 each time the stop during running, such as the
5V) and the data stored in the memory 2a (3rd
In the figure), the remaining battery capacity QJ 1 (116Ah) at stop is calculated (S10) (the remaining capacity detection means at stop).
そして、上記のように求められた実走修正バッテリ残
存容量QA1（118Ah）と上記停止時バッテリ残存容量QJ1
（116Ah）に基づいて新たに表示すべきバッテリ残存容
量QK1が例えばそれぞれQA1,QJ1に対して重み付けして平
均した次式により求められ（S11）、表示部３の表示が
更新される（S12）。Then, the actual running correction battery remaining capacity QA 1 (118Ah) obtained as described above and the above-mentioned battery remaining capacity at stop QJ 1
Based on (116Ah), the remaining battery charge QK 1 to be newly displayed is obtained by the following equation, which is weighted and averaged with respect to QA 1 and QJ 1 , respectively (S11), and the display of the display unit 3 is updated. (S12).
QK1＝（２・QA1＋QJ1）/3 ≒117〔Ah〕 （この場合QAとQJに対して2:1の重みが付けられてい
る。但しこれは一例であり、設計上の都合により任意に
選べる） 従って、このバッテリ残存容量表示装置１では、電気
車両の実走行状態（この場合平坦な道路の走行）に応じ
て正確にバッテリ残存容量を表示することができる。QK 1 = (2 · QA 1 + QJ 1 ) / 3 ≈ 117 [Ah] (In this case, a weight of 2: 1 is assigned to QA and QJ. However, this is an example, and due to design considerations Therefore, the battery remaining capacity display device 1 can accurately display the battery remaining capacity according to the actual traveling state of the electric vehicle (in this case, traveling on a flat road).
上述した前回表示のバッテリ残存容量QSと上記バッテ
リ消費容量QI1とに基づいて実走修正バッテリ残存容量Q
A1を求め、この実走修正バッテリ残容量QA1と上記停止
時バッテリ残存容量QJ1に基づいて新たに表示すべきバ
ッテリ残存容量QK1を求める機能を実現する手段が残存
容量演算手段の一例である。Based on the previously displayed battery remaining capacity QS and the above-mentioned battery consumption capacity QI 1 , the actual running corrected battery remaining capacity Q
Seeking A 1, an example of a means for realizing a function of obtaining the remaining battery capacity QK 1 to be newly displayed on the basis of the corrected remaining battery charge QA 1 and the stop when the battery remaining capacity QJ 1 this actual run the remaining capacity calculating means Is.
そして、走行開始から現在地点まで走行した間のバッ
テリの所定距離（例えば1km）あたりの平均消費容量
（この場合バッテリ消費容量QI1は2Ahであり、未だ1km
しか走行していないから2Ah/km）と上記バッテリ残存容
量QK1（117Ah）に基づいてこの電気車両の残走行距離L1
が次式により求められる（S13）。Then, the average consumption capacity of the battery per predetermined distance (for example, 1 km) during the traveling from the start of traveling to the current position (in this case, the battery consumption capacity QI 1 is 2 Ah, still 1 km).
2Ah / km) and the remaining running distance L 1 of this electric vehicle based on the battery remaining capacity QK 1 (117Ah).
Is calculated by the following equation (S13).
L1＝QK1/QI1 ≒58〔km〕 なお、このとき温度センサ７によって検出されたバッ
テリ４の温度（例えば30℃）に基づいて第５図に示す関
係（メモリ2aの記憶データ）から残走行距離修正係数ｆ
（この場合1.0）を求め、上記残走行距離L1（58km）を
次式により補正することができる。このようなバッテリ
温度による補正は必須ではない。L 1 = QK 1 / QI 1 ≈58 [km] Note that the relationship shown in FIG. 5 based on the temperature of the battery 4 (for example, 30 ° C.) detected by the temperature sensor 7 at this time (data stored in the memory 2 a ) To the remaining travel distance correction coefficient f
(1.0 in this case) is obtained, and the remaining travel distance L 1 (58 km) can be corrected by the following equation. Such correction based on the battery temperature is not essential.
Ｌ＝ｆ・L1 ＝58〔km〕 更に、この電気車両が例えば上り坂道を1km走行する
と、この1kmの走行により消費したバッテリ４の消費容
量QI2（例えば4Ah）が前記と同様に求められる（S14）
（前記消費容量検出手段）。L = f · L 1 = 58 [km] Furthermore, when this electric vehicle travels on an uphill road for 1 km, for example, the consumed capacity QI 2 (for example, 4 Ah) of the battery 4 consumed by this 1 km travel is obtained in the same manner as above. (S14)
(The consumed capacity detecting means).
そして、前回更新して表示されたバッテリ残存容量QK
1（117Ah）と上記バッテリ消費容量QI2（4Ah）とに基づ
いてS9と同様に実走修正バッテリ残容量QA2が求められ
る（S15）。And the battery remaining capacity QK that was updated and displayed last time
Based on 1 (117Ah) and the above battery consumption capacity QI 2 (4Ah), the actual running correction battery remaining capacity QA 2 is obtained as in S9 (S15).
QA2＝QK1−QI2 ＝117−４ ＝113〔Ah〕 また、前記S7,S10と同様に上記所定距離走行中に電気
車両が停止すると、その時のバッテリ４の電圧が検出さ
れ、前記メモリ2bに記憶された停止時電圧Viが新しい電
圧データに書き替えられ、書き替えられた最新の停止時
電圧Vi（例えば123V）およびメモリ2aの記憶データに基
づいて（第３図）、停止時バッテリ残存容量QJ2（112A
h）が求められる（S16）（前記停止時残存容量検出手
段）。QA 2 = QK 1 -QI 2 = 117-4 = 113 [Ah] Further, when the electric vehicle stops during the above predetermined distance traveling as in the case of S7 and S10, the voltage of the battery 4 at that time is detected and the memory shutdown voltage Vi stored in the 2 b is rewritten to the new voltage data, write instead was latest shutdown voltage Vi (e.g., 123V) and on the basis of the data stored in the memory 2 a (Figure 3), stop Battery remaining capacity QJ 2 (112A
h) is calculated (S16) (the remaining capacity detection means at the time of stop).
そして、上記求められた実走修正バッテリ残容量QA2
（113Ah）と上記停止時バッテリ残存容量QJ2（112Ah）
に基づいて新たに表示すべきバッテリ残存容量QK2が前
記S11と同様の次式により求められ（S17）、表示部３の
表示が更新される（S18）（前記残存容量演算手段）。Then, the actual running correction battery remaining capacity QA 2 obtained above
(113Ah) and the remaining battery capacity when stopped QJ 2 (112Ah)
Based on the above, the battery remaining capacity QK 2 to be newly displayed is obtained by the following equation similar to S11 (S17), and the display on the display unit 3 is updated (S18) (the remaining capacity calculating means).
QK2＝（２・QA2＋QJ2）/3 ≒113〔Ah〕 上述したようにこのバッテリ残存容量表示装置１では
電気車両の実走行状態（上記上り坂道）に応じて正確に
バッテリ残存容量を表示することができる。QK 2 = (2 · QA 2 + QJ 2 ) / 3 ≈113 [Ah] As described above, the battery remaining capacity display device 1 accurately displays the battery remaining capacity according to the actual running state of the electric vehicle (the above-mentioned uphill road). Can be displayed.
そして、走行開始から現在地点まで走行した距離2km
の所定距離（1km）あたりの平均バッテリ消費容量｛（Q
I1＋QI2）/2｝が求められ（S19）、更に上記求められた
バッテリ残存容量QK2（113Ah）と上記平均バッテリ消費
容量に基づき次式により残走行距離L2が求められる（S2
0）。And the distance traveled from the start to the current point is 2km
Average battery consumption per given distance (1km) of {(Q
I 1 + QI 2 ) / 2} is calculated (S19), and the remaining travel distance L 2 is calculated by the following formula based on the calculated battery remaining capacity QK 2 (113Ah) and the average battery consumption capacity (S2)
0).
L2＝2QK2/（QI1＋QI2） ＝２×113/（２＋４） ≒38〔km〕 なお、このときのバッテリ温度（例えば40℃）からメ
モリ2aの記憶データに基づいて（第５図）、残走行距離
修正係数ｆ（この場合1.1）が求められて上記残走行距
離L2が前記と同様の次式により補正され表示部３の残走
行距離Ｌの表示が更新される。L 2 = 2QK 2 / (QI 1 + QI 2 ) = 2 × 113 / (2 + 4) ≈38 [km] In addition, based on the stored data of the memory 2 a from the battery temperature (for example, 40 ° C.) at this time (fifth In the figure, the remaining travel distance correction coefficient f (1.1 in this case) is calculated, the remaining travel distance L 2 is corrected by the following equation similar to the above, and the display of the remaining travel distance L on the display unit 3 is updated.
Ｌ＝ｆ・L2 ＝1.1×38 ＝42〔km〕 以下、同様の手順が繰り返されて所定距離の1km毎に
この電気車両のバッテリ残存容量および残走行距離が求
められ表示部３の表示が更新される（S21）。L = f · L 2 = 1.1 × 38 = 42 [km] Hereafter, the same procedure is repeated, and the battery remaining capacity and the remaining mileage of this electric vehicle are obtained for each 1 km of the predetermined distance. It is updated (S21).
本発明によりバッテリにより駆動される電気車両のバ
ッテリ残存容量表示装置において、所定距離走行毎にバ
ッテリ残存容量を繰り返し更新して表示する残存容量表
示手段と、上記電気車両が停止したときのバッテリ電圧
を検出して停止時バッテリ残存容量を求める停止時残存
容量検出手段と、上記所定距離走行する間の電流を積算
してその間のバッテリの消費容量を求める消費容量検出
手段と、上記残存容量表示手段により表示された前回更
新のバッテリ残存容量と上記バッテリ消費容量とに基づ
いて実走修正バッテリ残容量を求め、該実走修正バッテ
リ残容量と上記停止時バッテリ残存容量に基づいて新た
に表示すべきバッテリ残存容量を求める残存容量演算手
段とを具備してなることを特徴とする電気車両のバッテ
リ残存容量表示装置が提供される。In a battery remaining capacity display device for an electric vehicle driven by a battery according to the present invention, a remaining capacity display means for repeatedly updating and displaying the battery remaining capacity every time a predetermined distance travels, and a battery voltage when the electric vehicle is stopped. The remaining capacity detecting means for detecting the remaining battery capacity at the time of detection, the remaining capacity detecting means for accumulating the current during the traveling for the predetermined distance to obtain the remaining capacity of the battery, and the remaining capacity displaying means. A battery to be newly displayed based on the actual running corrected battery remaining capacity obtained based on the displayed last remaining battery remaining capacity and the battery consumption capacity, and the actual running corrected battery remaining capacity and the stopped battery remaining capacity. A battery remaining capacity display device for an electric vehicle, comprising: a remaining capacity calculation means for obtaining a remaining capacity. It is provided.
従って、電気車両の実走行状態（走行実績）に応じて
正確にバッテリ残存容量を演算し、表示することができ
る。Therefore, it is possible to accurately calculate and display the remaining battery capacity according to the actual traveling state (traveling record) of the electric vehicle.
第１図は本発明の一実施例に係る電気車両のバッテリ残
存容量表示装置を示すブロック図、第２図は同バッテリ
残存容量表示装置のバッテリ残存容量演算処理の一例を
示すフローチャート、第３図は同バッテリ残存容量表示
装置の電気車両停止時のバッテリ電圧と停止時バッテリ
残存容量との関係を示すグラフ、第４図は同バッテリ残
存容量表示装置の停止時バッテリ残存容量と当該電気車
両の残走行距離との関係を示すグラフ、第５図は同バッ
テリ残存容量表示装置の当該電気車両のバッテリ温度と
残走行距離の修正係数との関係の一例を示すグラフであ
る。 〔符号の説明〕 １……バッテリ残存容量表示装置 ２……制御部 2a,2b……メモリ ３……表示部 ４……バッテリ ５……電圧検出回路 ６……電流検出回路 ８……距離センサFIG. 1 is a block diagram showing a battery remaining capacity display device for an electric vehicle according to an embodiment of the present invention, FIG. 2 is a flowchart showing an example of a battery remaining capacity calculation process of the battery remaining capacity display device, and FIG. Fig. 4 is a graph showing the relationship between the battery voltage when the electric vehicle is stopped and the remaining battery capacity when the electric vehicle is stopped, and Fig. 4 is the remaining battery capacity when the electric vehicle is stopped and the remaining capacity of the electric vehicle. FIG. 5 is a graph showing the relationship with the travel distance, and FIG. 5 is a graph showing an example of the relationship between the battery temperature of the electric vehicle and the correction coefficient of the remaining travel distance of the battery remaining capacity display device. [Description of symbols] 1 ... Battery remaining capacity display device 2 ... Control unit 2a , 2b ... Memory 3 ... Display unit 4 ... Battery 5 ... Voltage detection circuit 6 ... Current detection circuit 8 ... Distance sensor
Claims (1)
テリ残存容量表示装置において、 所定距離走行毎にバッテリ残存容量を繰り返し更新して
表示する残存容量表示手段と、 上記電気車両が停止したときのバッテリ電圧を検出して
停止時バッテリ残存容量を求める停止時残存容量検出手
段と、 上記所定距離走行する間の電流を積算してその間のバッ
テリの消費容量を求める消費容量検出手段と、 上記残存容量表示手段により表示された前回更新のバッ
テリ残存容量と上記バッテリ消費容量とに基づいて実走
修正バッテリ残容量を求め、該実走修正バッテリ残容量
と上記停止時バッテリ残存容量に基づいて新たに表示す
べきバッテリ残存容量を求める残存容量演算手段とを具
備してなることを特徴とする電気車両のバッテリ残存容
量表示装置。1. A battery remaining capacity display device for an electric vehicle driven by a battery, and a remaining capacity display means for repeatedly updating and displaying the battery remaining capacity every time a predetermined distance travels, and a battery when the electric vehicle is stopped. A remaining capacity detecting means for detecting a voltage to determine a remaining battery capacity at a stop, a remaining capacity detecting means for accumulating an electric current during traveling for the predetermined distance to obtain a consumed capacity of the battery in the meantime, and the remaining capacity display The actual running corrected battery remaining capacity is obtained based on the previously updated battery remaining capacity displayed by the means and the battery consumption capacity, and is newly displayed based on the actual running corrected battery remaining capacity and the stopped battery remaining capacity. Battery remaining capacity display device for an electric vehicle, comprising: Place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1270855A JP2675875B2 (en) | 1989-10-18 | 1989-10-18 | Battery residual capacity display device for electric vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1270855A JP2675875B2 (en) | 1989-10-18 | 1989-10-18 | Battery residual capacity display device for electric vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03135303A JPH03135303A (en) | 1991-06-10 |
| JP2675875B2 true JP2675875B2 (en) | 1997-11-12 |
Family
ID=17491919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1270855A Expired - Fee Related JP2675875B2 (en) | 1989-10-18 | 1989-10-18 | Battery residual capacity display device for electric vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2675875B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4032934B2 (en) * | 2002-11-15 | 2008-01-16 | ソニー株式会社 | Battery capacity calculation method, battery capacity calculation device, and battery capacity calculation program |
-
1989
- 1989-10-18 JP JP1270855A patent/JP2675875B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03135303A (en) | 1991-06-10 |
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