JP3175617B2 - Hybrid car - Google Patents
Hybrid carInfo
- Publication number
- JP3175617B2 JP3175617B2 JP02499797A JP2499797A JP3175617B2 JP 3175617 B2 JP3175617 B2 JP 3175617B2 JP 02499797 A JP02499797 A JP 02499797A JP 2499797 A JP2499797 A JP 2499797A JP 3175617 B2 JP3175617 B2 JP 3175617B2
- Authority
- JP
- Japan
- Prior art keywords
- engine
- auxiliary battery
- battery
- deterioration
- hybrid vehicle
- 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
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
- Y02T10/62—Hybrid vehicles
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
Description
【０００１】[0001]
【発明の属する技術分野】本発明はハイブリッド自動
車、特に主バッテリでエンジンの始動を行うハイブリッ
ド自動車の補機バッテリに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hybrid vehicle, and more particularly to an auxiliary battery for a hybrid vehicle in which an engine is started by a main battery.
【０００２】[0002]
【従来の技術】近年、電気自動車の無公害性とエンジン
駆動車同様の走行性能を有するハイブリッド車が注目さ
れている。ハイブリッド車は、通常時は主バッテリから
の電力によりモータを駆動し電気自動車として走行する
が、主バッテリの容量が低下した場合には発電機を駆動
して主バッテリの充電を行うものである。一方、エンジ
ンを始動する際には、例えば特開平５−３２８５２８号
公報に開示されているように、発電機を始動用モータと
して用いて主バッテリから電力を供給することでエンジ
ンを始動する。2. Description of the Related Art In recent years, attention has been paid to a hybrid vehicle having the pollution-free characteristics of an electric vehicle and the same running performance as an engine-driven vehicle. A hybrid vehicle normally runs as an electric vehicle by driving a motor with electric power from a main battery. However, when the capacity of the main battery decreases, the hybrid vehicle drives a generator to charge the main battery. On the other hand, when starting the engine, the engine is started by supplying electric power from a main battery using a generator as a starting motor, as disclosed in, for example, Japanese Patent Application Laid-Open No. 5-328528.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、このよ
うに主バッテリの電力を用いてエンジン始動を行う場
合、車載の電気機器（補機）を駆動するための補機バッ
テリの劣化状態がわからないために、走行中に補機バッ
テリの劣化による不具合が生じる可能性があった。すな
わち、通常の自動車では、補機バッテリからセルモータ
に大電流を供給することでエンジンを始動するので、ド
ライバはエンジンが始動できるか否かにより補機バッテ
リの劣化状態を容易に知ることができるが、上述したハ
イブリッド自動車では主バッテリの電力を用いているた
め、ドライバは補機バッテリがどのような状態にあるの
かエンジン始動時に把握することができないのである。However, when the engine is started using the electric power of the main battery as described above, the deterioration state of the auxiliary battery for driving the electric equipment (auxiliary equipment) mounted on the vehicle is not known. However, there is a possibility that a malfunction due to deterioration of the auxiliary battery during traveling may occur. That is, in a normal automobile, the engine is started by supplying a large current from the auxiliary battery to the starter motor. Therefore, the driver can easily know the deterioration state of the auxiliary battery by checking whether the engine can be started. In the above-described hybrid vehicle, since the power of the main battery is used, the driver cannot know the state of the auxiliary battery when starting the engine.
【０００４】本発明は、上記従来技術の有する課題に鑑
みなされたものであり、その目的は、エンジン始動時に
補機バッテリの劣化状態を確実に検出してドライバに報
知することで、以後の円滑な走行を可能とするハイブリ
ッド自動車を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to surely detect the state of deterioration of an auxiliary battery at the time of engine start and to notify a driver of the deterioration, thereby facilitating subsequent smooth operation. It is an object of the present invention to provide a hybrid vehicle that enables comfortable driving.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、エンジンと、該エンジンにて駆動される
発電機と、該発電機にて発電された電力を蓄積する主バ
ッテリと、該主バッテリからの電力にて駆動される電動
機と、補機を駆動するための補機バッテリとを備え、該
主バッテリの電力により該発電機を駆動させ該エンジン
を始動するハイブリッド自動車において、前記エンジン
始動時に前記補機バッテリの劣化を検出する検出手段
と、劣化を検出した場合にその旨を報知する報知手段と
を有することを特徴とする。In order to achieve the above object, the present invention provides an engine, a generator driven by the engine, and a main battery for storing power generated by the generator. An electric motor driven by electric power from the main battery, and an auxiliary battery for driving an auxiliary machine, wherein the hybrid vehicle starts the engine by driving the generator with the electric power of the main battery. It is characterized by comprising a detecting means for detecting the deterioration of the auxiliary battery at the time of starting the engine, and a notifying means for notifying when the deterioration is detected.
【０００６】ここで、前記検出手段は、エンジン始動時
に前記補機バッテリで車載機器を駆動することにより劣
化を検出することが好適である。また、前記検出手段
は、エンジン始動時に前記補機バッテリから車載機器駆
動用モータにロック電流を供給するスイッチ手段と、前
記補機バッテリの電圧を検出する電圧検出手段とを有
し、ロック電流通電時の補機バッテリの電圧変化に基づ
き劣化を検出することができる。このように、本発明で
は、エンジン始動時に自動的に補機バッテリに負荷をか
け、その特性を検出することで劣化の有無を報知するの
で、ハイブリッド車においても通常の自動車と同様に補
機バッテリの状態をエンジン始動時に把握することがで
きる。Here, it is preferable that the detecting means detects the deterioration by driving the on-vehicle equipment with the auxiliary battery when the engine is started. Further, the detection means includes switch means for supplying a lock current from the auxiliary battery to the vehicle-mounted device driving motor at the time of starting the engine, and voltage detection means for detecting a voltage of the auxiliary battery. The deterioration can be detected based on the voltage change of the auxiliary battery at the time. As described above, in the present invention, a load is automatically applied to the auxiliary battery at the time of engine start, and the presence or absence of deterioration is notified by detecting the characteristic thereof. Can be grasped when the engine is started.
【０００７】[0007]
【発明の実施の形態】以下、図面に基づき本発明の実施
形態について説明する。Embodiments of the present invention will be described below with reference to the drawings.
【０００８】本実施形態のハイブリッド自動車の基本的
な構成は、上述した特開平５−３２８５２８号公報と同
様である。すなわち、主バッテリにインバータを介して
モータが接続され、主バッテリからの電力によりモータ
を駆動して走行する。また、主バッテリには整流器を介
して発電機が接続され、この発電機はさらにエンジンに
連結されている。そして、主バッテリの容量低下時には
発電機を駆動して主バッテリの充電を行うとともに、エ
ンジン始動時には発電機を始動用モータとして機能さ
せ、主バッテリから電力を供給してエンジンを駆動す
る。さらに、主バッテリとは別に車載の電気機器（電動
パワーステアリング用モータやワイパーモータ、ブロア
ーモータ、パワーウインドウモータ、デフォッガ等）を
駆動するための補機バッテリが設けられており、本実施
形態では、主バッテリでエンジンを始動する際に補機バ
ッテリの劣化状態を自動検出する点に特徴がある。[0008] The basic configuration of the hybrid vehicle of the present embodiment is the same as that of the above-mentioned Japanese Patent Application Laid-Open No. 5-328528. That is, a motor is connected to the main battery via an inverter, and the motor runs by driving the motor with electric power from the main battery. Further, a generator is connected to the main battery via a rectifier, and the generator is further connected to the engine. When the capacity of the main battery is reduced, the generator is driven to charge the main battery, and when the engine is started, the generator is made to function as a starting motor, and power is supplied from the main battery to drive the engine. Further, an auxiliary battery for driving electric devices (e.g., a motor for electric power steering, a wiper motor, a blower motor, a power window motor, a defogger, etc.) mounted on a vehicle is provided separately from the main battery. It is characterized in that when the engine is started with the main battery, the deterioration state of the auxiliary battery is automatically detected.
【０００９】図１には、本実施形態の補機バッテリの劣
化検出を行う構成ブロック図が示されている。補機バッ
テリ１０と車載機器（例えばパワーウインドウ）のモー
タ１４間には電流センサ１２及び接続スイッチ１３が設
けられており、接続スイッチ１３の開閉は電子制御装置
ＥＣＵ１８で制御される。ＥＣＵ１８はマイクロコンピ
ュータを含んで構成されており、イグニッションスイッ
チＩＧのＯＮ信号、つまりエンジンの始動時を検出する
と、接続スイッチ１３をＯＮしてモータ１４にロック電
流を流す。このときの電流値Ｉは電流センサ１２で検出
され、ＥＣＵ１８に送られる。また、モータ１４への供
給電圧Ｖが電圧センサ１６で検出され、ＥＣＵ１８に送
られる。ＥＣＵはこれら電流Ｉと電圧Ｖに基づいて補機
バッテリ１０の劣化状態を検出し、モニタ２０に表示す
る構成である。なお、モニタ２０は液晶パネルやＣＲＴ
で構成できる。FIG. 1 is a block diagram showing a configuration for detecting deterioration of an auxiliary battery according to the present embodiment. A current sensor 12 and a connection switch 13 are provided between the auxiliary battery 10 and a motor 14 of a vehicle-mounted device (for example, a power window). The opening and closing of the connection switch 13 is controlled by an electronic control unit ECU 18. The ECU 18 includes a microcomputer, and when detecting an ON signal of the ignition switch IG, that is, when starting the engine, turns on the connection switch 13 to supply a lock current to the motor 14. The current value I at this time is detected by the current sensor 12 and sent to the ECU 18. Further, the supply voltage V to the motor 14 is detected by the voltage sensor 16 and sent to the ECU 18. The ECU is configured to detect the deterioration state of the auxiliary battery 10 based on the current I and the voltage V and display the deterioration state on the monitor 20. The monitor 20 is a liquid crystal panel or a CRT.
Can be configured.
【００１０】図２には、本実施形態におけるＥＣＵ１８
の処理フローチャートが示されている。まず、ＩＧＯＮ
でエンジン始動を検出すると（Ｓ１０１）、上述したよ
うに接続スイッチ１３をＯＮしてモータ１４にロック電
流を流す。なお、ロック電流であるので、パワーウイン
ドウ等はドライバの意に反して動くことはなく、ドライ
バに対して不要な違和感を感じさせることもない。そし
て、この時の補機バッテリ１０の電圧−電流特性を電流
センサの値Ｉと電圧センサの値Ｖから測定する（Ｓ１０
２）。一般に、補機バッテリ１０が劣化していない場合
には、所定時間ロック電流を流しても電圧は急峻に低下
することはないが、補機バッテリ１０が劣化している場
合には、急峻な電圧低下を示すことになる。従って、Ｅ
ＣＵ１８は所定時間内の電圧低下を算出し、例えば電流
１００Ａの一定条件下で５秒間に６Ｖ以上電圧が低下し
た場合には、補機バッテリ１０は劣化していると判定す
る。もちろん、判定のしきい値は、補機バッテリ１０の
非劣化時の特性に基づいて決定する必要があるのは言う
までもない。そして、補機バッテリ１０が劣化している
と判定した場合には、ＥＣＵ１８はその旨をモニタ２０
に表示する（Ｓ１０３）。表示メッセージとしては、
「バッテリが劣化しています。」や「バッテリを充電／
交換して下さい」の他、「バッテリが劣化していますの
で走行を中止して下さい」等が考えられ、さらに強制的
に走行を禁止する等の措置をとることも可能である。FIG. 2 shows an ECU 18 according to this embodiment.
Is shown. First, IGON
When the start of the engine is detected (S101), the connection switch 13 is turned on and the lock current flows to the motor 14 as described above. Since the current is the lock current, the power window and the like do not move against the driver's intention, and the driver does not feel an unnecessary discomfort. Then, the voltage-current characteristic of the auxiliary battery 10 at this time is measured from the value I of the current sensor and the value V of the voltage sensor (S10).
2). In general, when the auxiliary battery 10 has not deteriorated, the voltage does not drop sharply even when the lock current flows for a predetermined time, but when the auxiliary battery 10 has deteriorated, the voltage does not drop sharply. Will show a drop. Therefore, E
The CU 18 calculates a voltage drop within a predetermined time. For example, if the voltage drops by 6 V or more in 5 seconds under a constant condition of a current of 100 A, the auxiliary battery 10 is determined to be deteriorated. Of course, it is needless to say that the determination threshold value needs to be determined based on the characteristics of the auxiliary battery 10 when it is not deteriorated. If it is determined that the auxiliary battery 10 is deteriorated, the ECU 18 notifies the monitor 20 of that fact.
(S103). The displayed message is
"Battery is degraded." Or "Charge battery /
In addition to "Please replace the battery,""Stop running because the battery is deteriorated" may be considered, and it is also possible to take measures such as forcibly prohibiting the running.
【００１１】このように、本実施形態では、主バッテリ
を用いてエンジンを始動する際に、補機バッテリから車
載機器のモータにロック電流（あるいは突入電流）を供
給し、その電圧−電流特性を測定することで補機バッテ
リが劣化しているか否かを検出するので、走行開始後に
補機バッテリの劣化に伴う不具合（例えばミラーヒータ
やデフォッガが動作しない等）を確実に防止することが
できる。As described above, in the present embodiment, when starting the engine using the main battery, the lock current (or the inrush current) is supplied from the auxiliary battery to the motor of the vehicle-mounted device, and the voltage-current characteristic is changed. Since it is detected whether or not the auxiliary battery is deteriorated by the measurement, it is possible to reliably prevent a problem (for example, a mirror heater or a defogger does not operate) due to the deterioration of the auxiliary battery after the start of traveling.
【００１２】なお、上記の実施形態では、パワーウィン
ドウモータにロック電流を流す場合について説明した
が、任意の車載機器（電動パワーステアリングのモー
タ、ワイパーモータ、ブロワモータ、ムーンルーフのモ
ータ、ミラーヒータ、デフォッガ等）を用いることが可
能である。In the above embodiment, the case where a lock current is supplied to the power window motor has been described. Etc.) can be used.
【００１３】[0013]
【発明の効果】以上説明したように、本発明によれば、
主バッテリでエンジン始動を行うハイブリッド自動車に
おいて、エンジン始動時に補機バッテリの劣化状態を自
動検出してドライバに報知するので、以後の円滑な走行
が可能となる。As described above, according to the present invention,
In a hybrid vehicle in which the engine is started with the main battery, the deterioration state of the auxiliary battery is automatically detected at the time of starting the engine and the driver is informed, so that smooth running can be performed thereafter.
【図１】 本発明の実施形態のブロック図である。FIG. 1 is a block diagram of an embodiment of the present invention.
【図２】 同実施形態のＥＣＵの処理フローチャートで
ある。FIG. 2 is a processing flowchart of an ECU of the embodiment.
１０ 補機バッテリ、１２ 電流センサ、１３ 接続ス
イッチ、１４ モータ、１６ 電圧センサ、１８ ＥＣ
Ｕ（電子制御装置）、２０ モニタ。10 auxiliary battery, 12 current sensor, 13 connection switch, 14 motor, 16 voltage sensor, 18 EC
U (electronic control unit), 20 monitors.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｈ０２Ｊ 7/00 Ｈ０２Ｊ 7/00 Ｙ Ｂ６０Ｋ 9/00 Ｅ (56)参考文献 特開 平７−107620（ＪＰ，Ａ) 特開 平５−328530（ＪＰ，Ａ) 特開 平８−19103（ＪＰ，Ａ) 特開 平７−231503（ＪＰ，Ａ) 特開 平９−230010（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B60L 3/00 B60K 6/02 B60L 11/12 B60R 16/04 H02J 7/00 ────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. 7 Identification symbol FI H02J 7/00 H02J 7/00 Y B60K 9/00 E (56) References JP-A-7-107620 (JP, A) JP JP-A-5-328530 (JP, A) JP-A-8-19103 (JP, A) JP-A-7-231503 (JP, A) JP-A-9-230010 (JP, A) (58) Fields studied (Int .Cl. 7 , DB name) B60L 3/00 B60K 6/02 B60L 11/12 B60R 16/04 H02J 7/00
Claims (3)
発電機と、該発電機にて発電された電力を蓄積する主バ
ッテリと、該主バッテリからの電力にて駆動される電動
機と、補機を駆動するための補機バッテリとを備え、該
主バッテリの電力により該発電機を駆動させ該エンジン
を始動するハイブリッド自動車において、 前記エンジン始動時に前記補機バッテリの劣化を検出す
る検出手段と、 劣化を検出した場合にその旨を報知する報知手段と、 を有することを特徴とするハイブリッド自動車。1. An engine, a generator driven by the engine, a main battery storing power generated by the generator, an electric motor driven by power from the main battery, An auxiliary battery for driving the engine, and a hybrid vehicle that starts the engine by driving the generator with the electric power of the main battery; and a detection unit that detects deterioration of the auxiliary battery at the time of starting the engine. And a notifying means for notifying when deterioration is detected, and a hybrid vehicle.
補機バッテリで車載機器を駆動することにより劣化を検
出することを特徴とする請求項１記載のハイブリッド自
動車。2. The hybrid vehicle according to claim 1, wherein said detection means detects deterioration by driving an on-vehicle device with said auxiliary battery when starting an engine.
モータにロック電流を供給するスイッチ手段と、 前記補機バッテリの電圧を検出する電圧検出手段と、 を有し、ロック電流通電時の補機バッテリの電圧変化に
基づき劣化を検出することを特徴とする請求項１、２の
いずれかに記載のハイブリッド自動車。3. The detecting means includes: a switch for supplying a lock current from the auxiliary battery to a vehicle-mounted device driving motor when the engine is started; and a voltage detecting means for detecting a voltage of the auxiliary battery. 3. The hybrid vehicle according to claim 1, wherein the deterioration is detected based on a voltage change of the auxiliary battery when the lock current is supplied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02499797A JP3175617B2 (en) | 1997-02-07 | 1997-02-07 | Hybrid car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02499797A JP3175617B2 (en) | 1997-02-07 | 1997-02-07 | Hybrid car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10224904A JPH10224904A (en) | 1998-08-21 |
| JP3175617B2 true JP3175617B2 (en) | 2001-06-11 |
Family
ID=12153625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02499797A Expired - Fee Related JP3175617B2 (en) | 1997-02-07 | 1997-02-07 | Hybrid car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3175617B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11506719B2 (en) | 2019-08-26 | 2022-11-22 | Ford Global Technologies, Llc | Vehicle battery monitoring method and assembly |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000261982A (en) * | 1999-03-10 | 2000-09-22 | Toyota Motor Corp | Vehicle power supply controller |
| JP4541719B2 (en) * | 2004-02-16 | 2010-09-08 | 富士重工業株式会社 | Vehicle power supply |
| JP4708127B2 (en) * | 2005-09-06 | 2011-06-22 | トヨタ自動車株式会社 | Vehicle power management device |
| JP4807590B2 (en) * | 2007-12-28 | 2011-11-02 | 本田技研工業株式会社 | Control device for hybrid vehicle |
| JP2013090464A (en) * | 2011-10-19 | 2013-05-13 | Toyota Motor Corp | Vehicle |
| JP6515492B2 (en) * | 2014-11-10 | 2019-05-22 | スズキ株式会社 | Power supply device |
-
1997
- 1997-02-07 JP JP02499797A patent/JP3175617B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11506719B2 (en) | 2019-08-26 | 2022-11-22 | Ford Global Technologies, Llc | Vehicle battery monitoring method and assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10224904A (en) | 1998-08-21 |
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