JPH08214409A - Power supply device for electric vehicle - Google Patents
Power supply device for electric vehicleInfo
- Publication number
- JPH08214409A JPH08214409A JP7014268A JP1426895A JPH08214409A JP H08214409 A JPH08214409 A JP H08214409A JP 7014268 A JP7014268 A JP 7014268A JP 1426895 A JP1426895 A JP 1426895A JP H08214409 A JPH08214409 A JP H08214409A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- battery power
- abnormality
- electric vehicle
- power source
- 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.)
- Pending
Links
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
- 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
-
- 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
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、モータの動力で走る
電気自動車の電力供給装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for an electric vehicle that runs on the power of a motor.
【0002】[0002]
【従来の技術】エンジンに代えて走行用モータを搭載し
た電気自動車が開発され、実用化されつつある。この電
気自動車は、走行用モータへの駆動電力を出力する走行
用バッテリ電源を備えている。この走行用バッテリ電源
は、たとえば複数のバッテリを直列に接続したもので、
モータ駆動に必要な数百ボルトの高電圧を出力する。2. Description of the Related Art An electric vehicle equipped with a traveling motor instead of an engine has been developed and put into practical use. This electric vehicle includes a traveling battery power source that outputs drive power to a traveling motor. This battery power source for traveling is, for example, one in which a plurality of batteries are connected in series,
It outputs the high voltage of several hundreds of volts required to drive the motor.
【0003】また、電気自動車には、電力を必要とする
機器として、走行用モータのほかに電装機器(コントロ
ーラ、ランプ、エアコン)等の補機類がある。この補機
類の動作電力をどのように得るかについては、走行用バ
ッテリ電源の一部(たとえば1個)のバッテリを補機用
バッテリ電源として使用する方法が考えられる。しかし
ながら、そうすると、補機用バッテリ電源として使用す
るバッテリのみ電力消費が増大して劣化が早まり、他の
バッテリとのバランスが悪くなってしまう。In addition, in electric vehicles, auxiliary equipment such as electric equipment (controller, lamp, air conditioner) and the like are provided as equipment that requires electric power, in addition to a traveling motor. Regarding how to obtain the operating power of the auxiliary machinery, a method of using a battery (for example, one) of a battery power source for traveling as a battery power source for the auxiliary machinery can be considered. However, in that case, the power consumption of only the battery used as the battery power source for the auxiliary device increases, the deterioration is accelerated, and the balance with other batteries is deteriorated.
【0004】そこで、走行用バッテリ電源とは別個に補
機用バッテリ電源が設けられ、同補機用バッテリ電源に
よって補機類への電力供給が行なわれる。補機用バッテ
リ電源は、12ボルト電圧を出力するもので、比較的に小
容量のものが用いられる。Therefore, an auxiliary battery power source is provided separately from the traveling battery power source, and the auxiliary battery power source supplies electric power to the auxiliary machinery. The auxiliary battery power source outputs a 12-volt voltage, and has a relatively small capacity.
【0005】そして、この補機用バッテリ電源の採用に
伴い、充電電圧出力手段としてDC/DCコンバータが
用意され、電気自動車の稼働中、走行用バッテリ電源の
電圧がDC/DCコンバータによって変圧(降圧)さ
れ、同電圧が補機用バッテリ電源に充電する。これによ
り、補機用バッテリ電源のいわゆるバッテリ上がりが防
止される。With the adoption of this auxiliary battery power supply, a DC / DC converter is prepared as a charging voltage output means, and the running battery power supply voltage is transformed (stepped down) by the DC / DC converter while the electric vehicle is in operation. ), The same voltage charges the battery power source for the auxiliary equipment. This prevents the so-called battery depletion of the auxiliary battery power source.
【0006】このような補機用バッテリ電源およびDC
/DCコンバータを備えた電気自動車の例として、特開
昭64-85502号公報および特開平3-124201号公報に示され
るものがある。Such an auxiliary battery power source and DC
Examples of electric vehicles equipped with a / DC converter are disclosed in Japanese Patent Laid-Open Nos. 64-85502 and 3-124201.
【0007】[0007]
【発明が解決しようとする課題】DC/DCコンバータ
は、異常に対する保護手段として、過電流保護や過電圧
保護の回路を備えている。この保護機能が働くと、DC
/DCコンバータの動作が停止し、補機用バッテリ電源
に対する充電が不可能となる。The DC / DC converter is provided with an overcurrent protection circuit and an overvoltage protection circuit as a means for protecting against abnormalities. When this protection function works, DC
The operation of the / DC converter stops, and charging of the auxiliary battery power supply becomes impossible.
【0008】また、DC/DCコンバータは、動作中に
かなりの高温となり、その温度の影響から内部に断線等
の異常を起こすことがある。この場合も、補機用バッテ
リ電源に対する充電が不可能となる。Further, the DC / DC converter becomes considerably high in temperature during operation, and there is a possibility that an abnormality such as disconnection may occur inside due to the influence of the temperature. Also in this case, charging of the auxiliary battery power supply becomes impossible.
【0009】補機用バッテリ電源が充電されないまま走
行が続くと、やがてバッテリ上がりとなって補機類が動
作しなくなり、ひいては車両が走行不能となる。この発
明は上記の事情を考慮したもので、第1ないし第5の発
明の電気自動車の電力供給装置は、補機用バッテリ電源
に対する充電が不可能となった場合でも、補機類の動作
をなるべく長い期間継続して走行距離を延ばすことがで
き、これにより車両を安全な場所あるいはメンテナンス
可能な場所まで十分に到達させ得ることを目的とする。If the vehicle continues to run without the auxiliary battery power being charged, the battery will eventually run out, and the auxiliary machines will not operate, and the vehicle will be unable to run. The present invention takes the above circumstances into consideration, and the power supply device for an electric vehicle according to the first to fifth inventions operates the auxiliary devices even when the battery power supply for the auxiliary devices cannot be charged. The purpose is to be able to extend the mileage continuously for as long as possible, and thereby to make it possible for the vehicle to sufficiently reach a safe place or a place where maintenance is possible.
【0010】第6の発明の電気自動車の電力供給装置
は、補機用バッテリ電源に対する充電が不可能となった
場合でも、補機類の動作をなるべく長い期間継続して走
行距離を延ばすことができ、これにより車両を安全な場
所あるいはメンテナンス可能な場所まで十分に到達させ
得、さらには充電ができないことを運転者に知らせて安
全性の向上が図れることを目的とする。The power supply system for an electric vehicle according to the sixth aspect of the present invention can extend the traveling distance by continuing the operation of the auxiliary machinery as long as possible even when the battery power supply for the auxiliary machinery cannot be charged. Therefore, an object of the present invention is to allow the vehicle to sufficiently reach a safe place or a maintainable place, and further inform the driver that charging is not possible, thereby improving safety.
【0011】[0011]
【課題を解決するための手段】第1の発明の電気自動車
の電力供給装置は、複数のバッテリを有し、走行用モー
タへの駆動電力を出力する走行用バッテリ電源と、補機
類への電力を出力する補機用バッテリ電源と、上記走行
用バッテリ電源の電圧を降圧し、同電圧を上記補機用バ
ッテリ電源に対する充電電圧として出力する充電電圧出
力手段と、同充電電圧出力手段の異常を検出する異常検
出手段と、同異常検出手段が異常を検出したとき、上記
補機用バッテリ電源を上記走行用バッテリ電源の一部の
バッテリに直結する接続切換手段とを備える。According to a first aspect of the present invention, there is provided a power supply device for an electric vehicle, which has a plurality of batteries, and which supplies a driving battery power source for outputting driving power to a driving motor and auxiliary devices. Abnormality of the charging voltage output means for stepping down the voltage of the battery power supply for auxiliary equipment that outputs electric power and the voltage of the battery power supply for traveling, and outputting the same voltage as the charging voltage for the battery power supply for auxiliary equipment. And a connection switching means for directly connecting the auxiliary battery power supply to a part of the traveling battery power supply when the abnormality detection means detects an abnormality.
【0012】第2の発明の電気自動車の電力供給装置
は、第1の発明において、走行用バッテリ電源の各バッ
テリが直列に接続されている。第3の発明の電気自動車
の電力供給装置は、第1の発明の充電電圧出力手段とし
て、直流電圧を一旦交流に変換して変圧し、同変圧後の
電圧を整流して出力するDC/DCコンバータが用いら
れる。A power supply device for an electric vehicle according to a second aspect of the present invention is the power supply device for an electric vehicle according to the first aspect of the present invention, in which the batteries of the traveling battery power source are connected in series. A power supply device for an electric vehicle according to a third aspect of the present invention is, as the charging voltage output means of the first aspect of the present invention, a DC / DC that temporarily converts a direct current voltage into an alternating current and transforms it, and rectifies and outputs the transformed voltage. A converter is used.
【0013】第4の発明の電気自動車の電力供給装置
は、第1の発明の異常検出手段が、充電電圧出力手段か
ら出力される電圧および電流のうち少なくとも一方を検
知し、同検知結果のどちらか一方が零のとき、異常と判
定する。In the power supply device for an electric vehicle of the fourth invention, the abnormality detection means of the first invention detects at least one of the voltage and the current output from the charging voltage output means, and which one of the detection results is obtained. When either one is zero, it is determined to be abnormal.
【0014】第5の発明の電気自動車の電力供給装置
は、第1の発明の接続切換手段が、異常検出手段が異常
を検出したとき、走行用バッテリ電源の各バッテリを2
つの組に分離して一方の組に補機用バッテリ電源を接続
し、他方の組を走行用モータの駆動用として残す。第6
の発明の電気自動車の電力供給装置は、第1の発明の構
成に加え、異常検出手段が異常を検出したとき、その旨
を報知する報知手段を設けている。According to a fifth aspect of the present invention, there is provided a power supply device for an electric vehicle, wherein when the connection switching means of the first aspect detects an abnormality in the abnormality detecting means, each battery of the traveling battery power source is set to 2
It is separated into one set and one set is connected to an auxiliary battery power source, and the other set is left for driving the traveling motor. Sixth
In addition to the configuration of the first invention, the power supply device for an electric vehicle according to the invention of claim 1 is provided with a notification means for notifying that when the abnormality detection means detects an abnormality.
【0015】[0015]
【作用】第1の発明の電気自動車の電力供給装置では、
走行用バッテリ電源の電圧により走行用モータが駆動さ
れるとともに、補機用バッテリ電源の電圧により補機類
が動作する。また、走行用バッテリ電源の電圧が充電電
圧出力手段により降圧されて補機用バッテリ電源に充電
される。充電電圧出力手段に異常が生じた場合は、それ
が異常検出手段により検出される。このとき、補機用バ
ッテリ電源が走行用バッテリ電源の一部のバッテリに直
結される。In the power supply system for the electric vehicle of the first invention,
The traveling motor is driven by the voltage of the traveling battery power source, and the auxiliary machinery is operated by the voltage of the auxiliary battery power source. Further, the voltage of the traveling battery power source is stepped down by the charging voltage output means, and the auxiliary battery power source is charged. When an abnormality occurs in the charging voltage output means, it is detected by the abnormality detection means. At this time, the auxiliary battery power supply is directly connected to a part of the traveling battery power supply.
【0016】第2の発明の電気自動車の電力供給装置で
は、モータ駆動に必要な高電圧が走行用バッテリ電源か
ら出力される。第3の発明の電気自動車の電力供給装置
では、走行用バッテリ電源に対する充電電圧がDC/D
Cコンバータから出力される。In the power supply device for the electric vehicle of the second invention, the high voltage required for driving the motor is output from the battery power source for traveling. In the power supply device for the electric vehicle of the third invention, the charging voltage for the traveling battery power source is DC / D.
It is output from the C converter.
【0017】第4の発明の電気自動車の電力供給装置で
は、充電電圧出力手段から出力される電圧および電流の
うち少なくとも一方が零のとき、充電電圧出力手段が異
常と判定される。In the power supply device for an electric vehicle according to the fourth aspect of the present invention, the charging voltage output means is determined to be abnormal when at least one of the voltage and the current output from the charging voltage output means is zero.
【0018】第5の発明の電気自動車の電力供給装置で
は、異常検出手段で異常が検出されると、走行用バッテ
リ電源の各バッテリが2つの組に分離され、一方の組に
補機用バッテリ電源が接続され、他方の組が走行用モー
タの駆動用として残る。第6の発明の電気自動車の電力
供給装置では、異常検出手段で異常が検出されると、そ
の旨が報知される。In the electric power supply system for an electric vehicle according to the fifth aspect of the present invention, when an abnormality is detected by the abnormality detecting means, each battery of the traveling battery power source is separated into two sets, and one set has the auxiliary battery. The power supply is connected and the other set remains for driving the drive motor. In the power supply device for an electric vehicle according to the sixth aspect of the invention, when an abnormality is detected by the abnormality detecting means, the fact is notified.
【0019】[0019]
【実施例】以下、この発明の一実施例について図面を参
照して説明する。図1において、1は走行用バッテリ電
源で、複数のバッテリ2a,2b,…2nを直列に接続
し、後述する走行用モータ4の駆動に必要な電圧を出力
する。具体的には、12ボルトのバッテリを20個用意して
それを直列に接続し、数百ボルトの高電圧を出力する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a traveling battery power source, which connects a plurality of batteries 2a, 2b, ..., 2n in series and outputs a voltage required for driving a traveling motor 4 described later. Specifically, it prepares 20 12-volt batteries, connects them in series, and outputs a high voltage of several hundred volts.
【0020】走行用バッテリ電源1を構成している各バ
ッテリのうち、 1個目のバッテリ2aと 2個目のバッテ
リ2bとの接続間、 2個目のバッテリ2bと 3個目のバ
ッテリ2cとの接続間、 3個目のバッテリ2cと 4個目
のバッテリ2dとの接続間に、常閉形のリレー接点2
1,22,23がそれぞれ挿接される。Among the respective batteries constituting the traveling battery power source 1, between the first battery 2a and the second battery 2b, the second battery 2b and the third battery 2c are connected. Normally connected relay connection 2 between the third battery 2c and the fourth battery 2d.
1, 22, 23 are respectively inserted and connected.
【0021】走行用バッテリ電源1にモータコントロー
ラ3が接続され、同モータコントローラ3の出力端に走
行用モータ4が接続される。モータコントローラ3は、
走行用バッテリ電源1の電圧(直流電圧)をスイッチン
グにより所定周波数(およびレベル)の電圧に変換して
出力する。この出力は走行用モータ4の駆動電力とな
る。A motor controller 3 is connected to the traveling battery power source 1, and a traveling motor 4 is connected to the output end of the motor controller 3. The motor controller 3 is
The voltage (DC voltage) of the traveling battery power supply 1 is converted into a voltage of a predetermined frequency (and level) by switching and is output. This output serves as drive power for the traveling motor 4.
【0022】走行用モータ4は、交流モータであり、モ
ータコントローラ3の出力に応じた速度で動作し、電気
自動車の車輪を駆動する。走行用バッテリ電源1に、充
電電圧出力手段としてDC/DCコンバータ5が接続さ
れる。このDC/DCコンバータ5は、走行用バッテリ
電源1の電圧(直流電圧)を一旦交流に変換して変圧
(降圧)し、同変圧後の電圧を整流して出力する。The traveling motor 4 is an AC motor, operates at a speed according to the output of the motor controller 3, and drives the wheels of the electric vehicle. A DC / DC converter 5 is connected to the traveling battery power source 1 as a charging voltage output means. The DC / DC converter 5 temporarily converts the voltage (DC voltage) of the traveling battery power source 1 into AC, transforms (steps down) the voltage, rectifies the transformed voltage, and outputs the rectified voltage.
【0023】DC/DCコンバータ5の出力端に補機用
バッテリ電源6が接続され、同補機用バッテリ電源6に
電装機器(コントローラ、ランプ、エアコン)等の補機
類7が接続される。補機用バッテリ電源6は、12ボルト
電圧を出力するもので、比較的に小容量のものが用いら
れる。An auxiliary battery power source 6 is connected to the output terminal of the DC / DC converter 5, and auxiliary machinery 7 such as electrical equipment (controller, lamp, air conditioner) is connected to the auxiliary battery power source 6. The auxiliary battery power source 6 outputs a voltage of 12 V and has a relatively small capacity.
【0024】走行用バッテリ電源1のバッテリ2a,2
b,2cの正側端子がそれぞれ常開形のリレー接点3
1,32,33を介して相互接続され、同相互接続点が
常開形のリレー接点34を介して補機用バッテリ電源6
の正側端子に接続される。また、バッテリ2a,2b,
2cの負側端子がそれぞれ常開形のリレー接点41,4
2,43を介して相互接続され、同相互接続点が常開形
のリレー接点44を介して補機用バッテリ電源6の負側
端子に接続される。The batteries 2a, 2 of the traveling battery power source 1
b, 2c positive side terminals are normally open relay contacts 3
1, 32, 33 are connected to each other, and the interconnection point is connected via a normally open relay contact 34 to the auxiliary battery power source 6
Connected to the positive terminal of. In addition, the batteries 2a, 2b,
The negative terminals of 2c are normally open relay contacts 41, 4
2, 43, and the interconnection point is connected to the negative side terminal of the auxiliary machine battery power source 6 through a normally open relay contact 44.
【0025】走行用バッテリ電源1の各バッテリは、バ
ッテリ2a,2b,2cからなる組と、残りのバッテリ
2d,…2nからなる組とに区分される。このバッテリ
2d,…2nの組に、常開形のリレー接点51を介して
上記モータコントローラ3の入力端が接続される。Each battery of the traveling battery power source 1 is divided into a group consisting of the batteries 2a, 2b and 2c and a group consisting of the remaining batteries 2d, ... 2n. The input end of the motor controller 3 is connected to the set of batteries 2d, ... 2n via a normally open relay contact 51.
【0026】一方、DC/DCコンバータ5の出力端と
補機用バッテリ電源6との間の接続ラインに電流センサ
8が取付けられる。電流センサ8は、DC/DCコンバ
ータ5の出力電流を検知する。この検知結果は異常検出
部10に送られる。異常検出部10には、接続切換手段
としてリレー回路11が接続されるとともに、報知器1
2が接続される。On the other hand, a current sensor 8 is attached to a connection line between the output end of the DC / DC converter 5 and the auxiliary battery power source 6. The current sensor 8 detects the output current of the DC / DC converter 5. This detection result is sent to the abnormality detection unit 10. A relay circuit 11 is connected to the abnormality detection unit 10 as connection switching means, and the alarm device 1 is also provided.
2 are connected.
【0027】異常検出部10は、電流センサ8と共に異
常検出手段を構成しており、電流センサ8の検知結果が
零のとき、DC/DCコンバータ5に異常(過負荷保護
の対象となる異常、あるいは断線異常)が生じたと判定
する。また、異常検出部10は、異常を判定したとき、
リレー回路11に作動指令を与えるとともに、報知器1
2を作動させる。The abnormality detecting section 10 constitutes an abnormality detecting means together with the current sensor 8. When the detection result of the current sensor 8 is zero, the DC / DC converter 5 has an abnormality (abnormality which is a target of overload protection, Alternatively, it is determined that a disconnection abnormality) has occurred. In addition, when the abnormality detection unit 10 determines an abnormality,
In addition to giving an operation command to the relay circuit 11, the alarm 1
Turn on 2.
【0028】リレー回路11は、上記各リレー接点を構
成要素とする数個のリレーをまとめたものである。報知
器12は、たとえばランプで、電気自動車の運転室など
運転手の目の届く箇所に設けられる。The relay circuit 11 is a group of several relays having the above-mentioned relay contacts as constituent elements. The alarm 12 is, for example, a lamp, and is provided in a place where the driver can see, such as the cab of an electric vehicle.
【0029】つぎに、上記の構成の作用を説明する。走
行用バッテリ電源1の電圧がモータコントローラ3によ
って所定周波数(およびレベル)の電圧に変換され、走
行用モータ4に供給される。これにより、走行用モータ
4が駆動され、電気自動車が走行する。Next, the operation of the above configuration will be described. The voltage of the traveling battery power source 1 is converted into a voltage of a predetermined frequency (and level) by the motor controller 3 and supplied to the traveling motor 4. As a result, the traveling motor 4 is driven and the electric vehicle runs.
【0030】走行用バッテリ電源1の電圧はDC/DC
コンバータ5にも供給されており、同DC/DCコンバ
ータ5の出力電圧が補機用バッテリ電源6に充電され
る。そして、補機用バッテリ電源6の電圧によって補機
類7が動作する。The voltage of the traveling battery power source 1 is DC / DC.
It is also supplied to the converter 5, and the output voltage of the DC / DC converter 5 is charged in the auxiliary battery power supply 6. Then, the auxiliary machinery 7 is operated by the voltage of the auxiliary battery power source 6.
【0031】DC/DCコンバータ5に何らかの異常が
生じると、補機用バッテリ電源6に対する充電が不可能
となる。このまま走行が続くと、やがて補機用バッテリ
電源6がバッテリ上がりして補機類7が動作しなくな
り、車両が走行不能となる。If any abnormality occurs in the DC / DC converter 5, the auxiliary battery power source 6 cannot be charged. If the vehicle continues to travel as it is, the battery power source 6 for the auxiliary machine will eventually run out of battery, the auxiliary machines 7 will not operate, and the vehicle will be unable to travel.
【0032】ただし、この異常時は、DC/DCコンバ
ータ5の出力電流が零となり、それが電流センサ8で検
知される。この検知により異常検出部10で異常が判定
され、その判定に従ってリレー回路11および報知器1
2が作動する。However, at the time of this abnormality, the output current of the DC / DC converter 5 becomes zero, which is detected by the current sensor 8. With this detection, the abnormality detection unit 10 determines an abnormality, and according to the determination, the relay circuit 11 and the alarm device 1
2 works.
【0033】リレー回路11が作動すると、リレー接点
21,22,23が開くとともに、リレー接点31,3
2,33,34,41,42,43,44,51が閉じ
る。報知器12の作動は、補機用バッテリ電源6に対す
る充電が不可能になったことを運転手に知らせる。When the relay circuit 11 is activated, the relay contacts 21, 22, 23 are opened and the relay contacts 31, 3 are also opened.
2, 33, 34, 41, 42, 43, 44, 51 are closed. The operation of the alarm 12 informs the driver that charging of the auxiliary battery power source 6 has become impossible.
【0034】リレー接点21,22,23が開くと、走
行用バッテリ電源1におけるバッテリ2a,2b,2c
の接続が1つずつ切り離される。リレー接点31,3
2,33,34が閉じると、上記切り離されたバッテリ
2a,2b,2cのそれぞれ正側端子が補機用バッテリ
電源6の正側端子に直結される。When the relay contacts 21, 22, 23 are opened, the batteries 2a, 2b, 2c in the traveling battery power source 1 are opened.
Are disconnected one by one. Relay contact 31,3
When 2, 33, 34 are closed, the positive terminals of the separated batteries 2a, 2b, 2c are directly connected to the positive terminals of the auxiliary battery power source 6.
【0035】リレー接点41,42,43,44が閉じ
ると、バッテリ2a,2b,2cのそれぞれ負側端子が
補機用バッテリ電源6の負側端子に直結される。すなわ
ち、バッテリ2a,2b,2cが互いに並列に接続され
た状態となり、同並列回路の電圧が補機用バッテリ電源
6に印加される。When the relay contacts 41, 42, 43, 44 are closed, the negative terminals of the batteries 2a, 2b, 2c are directly connected to the negative terminals of the auxiliary battery power source 6. That is, the batteries 2a, 2b, 2c are connected in parallel with each other, and the voltage of the parallel circuit is applied to the auxiliary machine battery power source 6.
【0036】このように、走行用バッテリ電源1の一部
のバッテリ電圧を補機用バッテリ電源6に印加すること
により、たとえDC/DCコンバータ5による充電が不
可能となっても、補機用バッテリ電源6のバッテリ上が
りを極力防ぎながら補機類7をなるべく長い期間継続し
て動作させることができる。As described above, by applying a partial battery voltage of the traveling battery power source 1 to the auxiliary battery power source 6, even if charging by the DC / DC converter 5 becomes impossible, It is possible to continuously operate the auxiliary machinery 7 for as long as possible while preventing the battery power of the battery power source 6 from being exhausted as much as possible.
【0037】また、リレー接点51が閉じることによ
り、走行用バッテリ電源1の残りのバッテリ2d,…2
nにモータコントローラ3が接続される。これにより、
走行用モータ4の動作が続けられる。When the relay contact 51 is closed, the remaining batteries 2d, ...
The motor controller 3 is connected to n. This allows
The operation of the traveling motor 4 is continued.
【0038】こうして、補機類7の動作および走行用モ
ータ4の動作が継続することにより、車両を安全な場
所、あるいはメンテナンス可能な場所まで、十分に到達
させることができる。In this way, by continuing the operation of the auxiliary machinery 7 and the operation of the traveling motor 4, it is possible to sufficiently reach the safe place or the maintainable place of the vehicle.
【0039】しかも、報知器12が作動によって運転手
への報知がなされるので、運転手は上記の安全な場所や
メンテナンス可能な場所に直ちに向かうなど、迅速かつ
適切な処置をとることができ、安全性の向上が図れる。Moreover, since the driver 12 is notified by the operation of the alarm device 12, the driver can take prompt and appropriate measures such as immediately going to the safe place or the place where maintenance is possible. The safety can be improved.
【0040】なお、上記実施例では、DC/DCコンバ
ータ5の出力電流を電流センサ8で検知したが、電流セ
ンサに代えて電圧センサを設け、DC/DCコンバータ
5の出力電圧を基に異常を検出する構成としてもよい。
要は、DC/DCコンバータ5から出力される電圧およ
び電流のうち少なくとも一方を検知し、同検知結果が零
のとき、異常と判定すればよい。In the above embodiment, the output current of the DC / DC converter 5 is detected by the current sensor 8. However, a voltage sensor is provided instead of the current sensor, and an abnormality is detected based on the output voltage of the DC / DC converter 5. It may be configured to detect.
The point is that at least one of the voltage and the current output from the DC / DC converter 5 is detected, and when the detection result is zero, it may be determined as abnormal.
【0041】また、上記実施例では、モータコントロー
ラ3が補機類7とは別個の構成である場合を例に説明し
たが、モータコントローラ3が補機類7に含まれる場合
についても同様に実施できる。その他、この発明は上記
実施例に限定されるものではなく、要旨を変えない範囲
で種々変形実施可能である。In the above embodiment, the case where the motor controller 3 is separate from the auxiliary machinery 7 has been described as an example, but the same applies to the case where the motor controller 3 is included in the auxiliary machinery 7. it can. Besides, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.
【0042】[0042]
【発明の効果】以上述べたように、第1ないし第5の発
明の電気自動車の電力供給装置は、走行用バッテリ電源
の電圧により走行用モータを駆動し、また補機用バッテ
リ電源の電圧により補機類を動作させ、かつ走行用バッ
テリ電源の電圧を充電電圧出力手段により降圧して補機
用バッテリ電源に充電するとともに、充電電圧出力手段
に異常が生じた場合はそれを異常検出手段により検出し
て補機用バッテリ電源を走行用バッテリ電源の一部のバ
ッテリに直結する構成としたので、補機用バッテリ電源
に対する充電が不可能となった場合でも、補機類の動作
をなるべく長い期間継続して走行距離を延ばすことがで
き、これにより車両を安全な場所あるいはメンテナンス
可能な場所まで十分に到達させ得ることができる。第6
の発明の電気自動車の電力供給装置は、さらに異常の旨
を報知手段で報知する構成としたので、安全性の向上が
図れる。As described above, the electric power supply system for an electric vehicle according to the first to fifth aspects of the invention drives the traveling motor with the voltage of the traveling battery power source, and also uses the voltage of the auxiliary battery power source. The auxiliary equipment is operated, and the voltage of the traveling battery power supply is reduced by the charging voltage output means to charge the auxiliary equipment battery power supply.When an abnormality occurs in the charging voltage output means, it is detected by the abnormality detection means. Since it is configured to detect and directly connect the battery power for auxiliary equipment to a part of the battery power for traveling, even if charging of the battery power for auxiliary equipment becomes impossible, the operation of auxiliary equipment will be as long as possible. The mileage can be extended continuously for a period of time, which allows the vehicle to sufficiently reach a safe place or a place where maintenance is possible. Sixth
Since the power supply device for an electric vehicle according to the invention of the invention is configured to notify the abnormality by the notification means, the safety can be improved.
【図1】一実施例の電気回路の構成を示す図。FIG. 1 is a diagram showing a configuration of an electric circuit according to an embodiment.
1…走行用バッテリ電源、2a,2b,…2c……バッ
テリ、3…モータコントローラ、4…走行用モータ、5
…DC/DCコンバータ(充電電圧出力手段)、6…補
機用バッテリ電源、7…補機類、8…電流センサ、10
…異常検出部、11…リレー回路(接続切換手段)、1
2…報知器、21,22,23…常閉形のリレー接点、
31,32,33,34,41,42,43,44,5
1…常開形のリレー接点。1 ... Running battery power source, 2a, 2b, ... 2c ... Battery, 3 ... Motor controller, 4 ... Running motor, 5
... DC / DC converter (charging voltage output means), 6 ... Battery power source for auxiliary machinery, 7 ... Auxiliary machinery, 8 ... Current sensor, 10
... Abnormality detection section, 11 ... Relay circuit (connection switching means), 1
2 ... Alarm device 21, 22, 23 ... Normally closed relay contact,
31, 32, 33, 34, 41, 42, 43, 44, 5
1 ... Normally open relay contact.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 熊谷 直武 東京都港区芝五丁目33番8号 三菱自動車 工業株式会社内 (72)発明者 古賀 久光 東京都港区芝五丁目33番8号 三菱自動車 工業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Naotake Kumagai 5-3-8 Shiba, Minato-ku, Tokyo Mitsubishi Motors Corporation (72) Hisamitsu Koga 5-33-8 Shiba, Minato-ku, Tokyo Mitsubishi Automotive Industry Co., Ltd.
Claims (6)
の駆動電力を出力する走行用バッテリ電源と、 補機類への電力を出力する補機用バッテリ電源と、 上記走行用バッテリ電源の電圧を変圧し、同電圧を上記
補機用バッテリ電源に対する充電電圧として出力する充
電電圧出力手段と、 同充電電圧出力手段の異常を検出する異常検出手段と、 同異常検出手段が異常を検出したとき、上記補機用バッ
テリ電源を上記走行用バッテリ電源の一部のバッテリに
並列に接続する接続切換手段と、 を備えたことを特徴とする電気自動車の電力供給装置。1. A traveling battery power source that has a plurality of batteries and outputs drive power to a traveling motor, an auxiliary battery power source that outputs electric power to auxiliary machinery, and the traveling battery power source. The charging voltage output means for transforming the voltage and outputting the same voltage as the charging voltage for the battery power supply for the auxiliary machine, the abnormality detecting means for detecting an abnormality of the charging voltage output means, and the abnormality detecting means have detected an abnormality. A power supply device for an electric vehicle, comprising: a connection switching unit that connects the auxiliary battery power supply to a battery of a part of the traveling battery power supply in parallel.
装置において、 走行用バッテリ電源は、複数のバッテリを直列に接続し
ていることを特徴とする電気自動車の電力供給装置。2. The electric power supply apparatus for an electric vehicle according to claim 1, wherein the traveling battery power source has a plurality of batteries connected in series.
装置において、 充電電圧出力手段は、直流電圧を変換(降圧)して出力
するDC/DCコンバータであることを特徴とする電気
自動車の電力供給装置。3. The power supply device for an electric vehicle according to claim 1, wherein the charging voltage output means is a DC / DC converter that converts (steps down) a DC voltage and outputs the DC voltage. Power supply equipment.
装置において、 異常検出手段は、充電電圧出力手段から出力される電圧
および電流のうち少なくとも一方を検知し、同検知結果
が零のとき、異常と判定することを特徴とする電気自動
車の電力供給装置。4. The electric vehicle power supply device according to claim 1, wherein the abnormality detection means detects at least one of the voltage and the current output from the charging voltage output means, and when the detection result is zero. A power supply device for an electric vehicle, characterized in that it is determined to be abnormal.
装置において、 接続切換手段は、異常検出手段が異常を検出したとき、
走行用バッテリ電源の各バッテリを2つの組に分離して
一方の組に補機用バッテリ電源を並列に接続し、他方の
組を走行用モータの駆動用として残すことを特徴とする
電気自動車の電力供給装置。5. The power supply device for an electric vehicle according to claim 1, wherein the connection switching means detects an abnormality by the abnormality detecting means,
An electric vehicle characterized in that each battery of a traveling battery power source is separated into two groups, one of the groups is connected with an auxiliary battery power source in parallel, and the other group is left for driving a traveling motor. Power supply equipment.
装置において、 異常検出手段が異常を検出したとき、その旨を報知する
報知手段を設けたことを特徴とする電気自動車の電力供
給装置。6. The power supply apparatus for an electric vehicle according to claim 1, further comprising a notifying means for notifying the abnormality detection means when an abnormality is detected by the abnormality detection means. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7014268A JPH08214409A (en) | 1995-01-31 | 1995-01-31 | Power supply device for electric vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7014268A JPH08214409A (en) | 1995-01-31 | 1995-01-31 | Power supply device for electric vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08214409A true JPH08214409A (en) | 1996-08-20 |
Family
ID=11856351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7014268A Pending JPH08214409A (en) | 1995-01-31 | 1995-01-31 | Power supply device for electric vehicle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH08214409A (en) |
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JP2010104106A (en) * | 2008-10-22 | 2010-05-06 | Mitsubishi Electric Corp | Power supplying device |
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WO2013002167A1 (en) * | 2011-06-28 | 2013-01-03 | 株式会社オートネットワーク技術研究所 | Vehicle power source device |
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1995
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Cited By (13)
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KR100476202B1 (en) * | 2002-06-25 | 2005-03-10 | 현대자동차주식회사 | A method for preventing and diagnosing an arm-short of bi-directional dc/dc converter |
JP2010104106A (en) * | 2008-10-22 | 2010-05-06 | Mitsubishi Electric Corp | Power supplying device |
JP2010172135A (en) * | 2009-01-23 | 2010-08-05 | Nissan Motor Co Ltd | Charging controller for vehicle and charging control method for vehicle |
JP2010279206A (en) * | 2009-05-29 | 2010-12-09 | Dx Antenna Co Ltd | State monitoring power supply device and method of monitoring state of power supply |
JP2011030363A (en) * | 2009-07-24 | 2011-02-10 | Toyota Industries Corp | Vehicle power supply unit |
JP2013013196A (en) * | 2011-06-28 | 2013-01-17 | Autonetworks Technologies Ltd | Vehicle power source device |
WO2013002167A1 (en) * | 2011-06-28 | 2013-01-03 | 株式会社オートネットワーク技術研究所 | Vehicle power source device |
US9387763B2 (en) | 2011-06-28 | 2016-07-12 | Autonetworks Technologies, Ltd. | Power source device for vehicle |
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JP2013106362A (en) * | 2011-11-10 | 2013-05-30 | Mitsubishi Electric Corp | Device, method, and system for managing power supply |
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