JPH07102968A - Electric heating catalyst controller - Google Patents
Electric heating catalyst controllerInfo
- Publication number
- JPH07102968A JPH07102968A JP5253907A JP25390793A JPH07102968A JP H07102968 A JPH07102968 A JP H07102968A JP 5253907 A JP5253907 A JP 5253907A JP 25390793 A JP25390793 A JP 25390793A JP H07102968 A JPH07102968 A JP H07102968A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- catalyst
- parallel
- batteries
- series
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
(57)【要約】
【目的】 バッテリーの過放電を防ぎつつ電気加熱触媒
への通電を制御する。
【構成】 自動車エンジンの排気管２には電気加熱触媒
３を備えており、その温度は温度センサ８により検出さ
れる。コントローラ７は、触媒３の温度が高いときには
直列並列切換リレー６を並列モードにしてバッテリーＢ
1 ，Ｂ2 を並列接続して発電機５により充電する。また
触媒３の温度が低く且つバッテリーＢ1 ，Ｂ2 の充電容
量が所定値よりも大きいときには、直列並列切換リレー
６を直列モードにしてバッテリーＢ1 ，Ｂ2 を直列接続
してバッテリーＢ1 ，Ｂ2 から電気加熱触媒３に電気を
流す。バッテリーＢ1 ，Ｂ2 の充電容量の１つでも所定
値未満となったら、並列接続にしてバッテリーＢ1 ，Ｂ
2 を充電すると共に、電気加熱触媒３に通電することを
禁止する。
(57) [Summary] [Purpose] To control the energization of the electrically heated catalyst while preventing over-discharge of the battery. [Structure] An exhaust pipe 2 of an automobile engine is equipped with an electrically heated catalyst 3, the temperature of which is detected by a temperature sensor 8. The controller 7 sets the series / parallel switching relay 6 in the parallel mode when the temperature of the catalyst 3 is high.
1 and B 2 are connected in parallel and charged by the generator 5. Further, when the charge capacity of and the battery B 1, B 2 temperature is low in the catalyst 3 is larger than the predetermined value, the battery B 1 battery B 1, B 2 are connected in series with the series-parallel changeover relay 6 in series mode, Electricity is passed from B 2 to the electrically heated catalyst 3. When it becomes less than the predetermined value even one charge capacity of the battery B 1, B 2, battery B 1 in the parallel connection, B
It is prohibited to charge 2 and energize the electrically heated catalyst 3.
Description
【０００１】[0001]
【産業上の利用分野】本発明は電気加熱触媒制御装置に
関し、バッテリーの過放電を防ぐように工夫をしたもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrically heated catalyst control device, which is devised to prevent over-discharge of a battery.
【０００２】[0002]
【従来の技術】自動車エンジンの排気ガスを浄化するた
め、排気管の一部に触媒を設けている。触媒は高温にな
ると活性化して排気ガスを浄化する機能が高くなるが、
エンジン始動時など温度が低いときには浄化機能が低下
する。2. Description of the Related Art A catalyst is provided in a part of an exhaust pipe in order to purify exhaust gas from an automobile engine. When the catalyst becomes hot, it becomes more active and has a higher function to purify exhaust gas.
When the temperature is low such as when the engine is started, the purification function is reduced.
【０００３】そこで冷態始動時など低温時でも浄化機能
を高くすることのできる電気加熱触媒（ＥＨＣ）が開発
されている。電気加熱触媒は、触媒担体と電気抵抗体を
有しており、低温時には電気抵抗体に電気を流して発熱
させ触媒担体を加熱して活性化させる。触媒担体が高温
となり活性化すると通電を停止する。Therefore, an electrically heated catalyst (EHC) has been developed which can enhance the purification function even at low temperature such as cold start. The electrically heated catalyst has a catalyst carrier and an electric resistor, and when the temperature is low, electricity is applied to the electric resistor to generate heat to heat and activate the catalyst carrier. When the temperature of the catalyst carrier becomes high and it is activated, the power supply is stopped.
【０００４】電気加熱触媒を作動させるためには大電力
を要するため、自動車用として一般的な１２ｖのバッテ
リーを２個、自動車に搭載しており、電気加熱触媒に通
電するときには２個のバッテリーを直列接続して２４ｖ
の電源としている。他のときには２個のバッテリーを並
列接続し１２ｖの電源としている。発電機によりバッテ
リーを充電するときも並列接続にしている。Since a large amount of electric power is required to operate the electrically heated catalyst, two 12v batteries that are generally used for automobiles are installed in the automobile, and two batteries are used when the electrically heated catalyst is energized. 24v by connecting in series
And power. At other times, two batteries are connected in parallel to provide a 12v power source. Even when charging the battery with the generator, it is connected in parallel.
【０００５】[0005]
【発明が解決しようとする課題】ところでバッテリーの
状態はいつも一定というわけではなく、バッテリーの充
電容量が低下しているときに電気加熱触媒に通電をする
とバッテリーが過放電してしまう。バッテリーが過放電
してしまうと、エンストの際や走行後充電が十分になさ
れる前に停車した際、再始動ができなくなる可能性があ
った。However, the state of the battery is not always constant, and if the electric heating catalyst is energized when the charge capacity of the battery is low, the battery will be over-discharged. If the battery is over-discharged, it may not be possible to restart when the engine stalls or stops after the vehicle is fully charged after running.
【０００６】本発明は、上記従来技術に鑑み、バッテリ
ーを過放電にすることなく安全に動作をすることのでき
る電気加熱触媒制御装置を提供することを目的とする。In view of the above-mentioned prior art, it is an object of the present invention to provide an electric heating catalyst control device that can operate safely without over-discharging the battery.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決する本発
明の構成は、複数のバッテリーと、自動車エンジンの排
気管に備えられると共に上記バッテリーから通電するこ
とにより発熱する電気抵抗体を有する電気加熱触媒と、
上記複数のバッテリーを充電する充電手段と、上記電気
加熱触媒への通電時には上記複数のバッテリーを直列に
接続して直列接続したバッテリーを上記電気加熱触媒に
接続すると共に充電時には上記複数のバッテリーを並列
に接続して並列接続したバッテリーを上記充電手段に接
続する直列並列切換手段と、上記バッテリーの充電容量
を検出する検出手段と、この検出手段で検出した充電容
量のうち少なくとも一つがあらかじめ決めた値よりも小
さくなったら上記電気加熱触媒への通電を禁止して上記
バッテリーを充電するように上記直列並列切換手段の切
換動作を制御する制御手段とを有することを特徴とす
る。The structure of the present invention for solving the above-mentioned problems is an electric heating having a plurality of batteries and an electric resistor which is provided in an exhaust pipe of an automobile engine and which generates heat when energized from the batteries. A catalyst,
Charging means for charging the plurality of batteries, the plurality of batteries are connected in series when the electric heating catalyst is energized, and the batteries connected in series are connected to the electric heating catalyst and the plurality of batteries are connected in parallel during charging. Connected in parallel and connected in parallel to the charging means, the serial-parallel switching means, the detection means for detecting the charging capacity of the battery, at least one of the charging capacity detected by the detecting means is a predetermined value And a control means for controlling the switching operation of the series-parallel switching means so as to charge the battery by prohibiting energization to the electrically heated catalyst when it becomes smaller.
【０００８】[0008]
【作用】充電手段によりバッテリーを充電するときには
複数のバッテリーを並列接続し、電気加熱触媒に通電す
るときには複数のバッテリーを直列接続し、バッテリー
の充電容量が所定値よりも小さいときには電気加熱触媒
への通電を禁止する。When the battery is charged by the charging means, the plurality of batteries are connected in parallel, when the electric heating catalyst is energized, the plurality of batteries are connected in series. When the charging capacity of the battery is smaller than the predetermined value, the electric heating catalyst is connected to the electric heating catalyst. Do not energize.
【０００９】[0009]
【実施例】以下に本発明の実施例を図面に基づき詳細に
説明する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【００１０】図１は本発明の実施例を示す。同図に示す
ように、自動車のシリンダ１で生じた排気ガスを導く排
気管２の途中には、電気加熱触媒３及び触媒４を設けて
いる。電気加熱触媒３は触媒担体と通電することにより
発熱する電気抵抗体を有しており、触媒４は触媒担体の
みを有し電気抵抗体は有していない。FIG. 1 shows an embodiment of the present invention. As shown in the figure, an electrically heated catalyst 3 and a catalyst 4 are provided in the middle of an exhaust pipe 2 that guides exhaust gas generated in a cylinder 1 of an automobile. The electrically heated catalyst 3 has an electric resistor that generates heat when energized with the catalyst carrier, and the catalyst 4 has only the catalyst carrier and does not have an electric resistor.
【００１１】２つのバッテリーＢ1 ，Ｂ2 は１２ｖのバ
ッテリーである。また発電機５はエンジンが回転するこ
とにより１２ｖの電圧を発生する。直列並列切換リレー
６は、コントローラ７の指令を基に、直列モードと並列
モードに切り換わる。直列並列切換リレー６は、直列モ
ードになったときには、バッテリーＢ1 ，Ｂ2 を直列接
続すると共にバッテリーＢ1 ，Ｂ2 を電気加熱触媒３に
接続する。また直列並列切換リレー６は、並列モードに
なったときには、バッテリーＢ1 ，Ｂ2 を並列接続する
と共にバッテリーＢ1 ，Ｂ2 を発電機５及び他の電装品
（図示省略）に接続する。The two batteries B 1 and B 2 are 12v batteries. Further, the generator 5 generates a voltage of 12v as the engine rotates. The series / parallel switching relay 6 switches between a series mode and a parallel mode based on a command from the controller 7. When in series mode, the series-parallel switching relay 6 connects the batteries B 1 and B 2 in series and also connects the batteries B 1 and B 2 to the electrically heated catalyst 3. Further, the series-parallel switching relay 6 connects the batteries B 1 and B 2 in parallel and connects the batteries B 1 and B 2 to the generator 5 and other electric components (not shown) when in the parallel mode.
【００１２】温度センサ８は電気加熱触媒３の温度を検
出し検出温度データをコントローラ７に送る。コントロ
ーラ７は、バッテリーＢ1 ，Ｂ2 の電圧を検出すること
によりバッテリーＢ1 ，Ｂ2 の充電容量を個別に判定す
る。The temperature sensor 8 detects the temperature of the electrically heated catalyst 3 and sends the detected temperature data to the controller 7. The controller 7 is individually determined charge capacity of the battery B 1, B 2 by detecting the voltage of the battery B 1, B 2.
【００１３】コントローラ７は、電気加熱触媒３の温度
があらかじめ決めた所定温度（触媒担体が活性化する温
度）以上であるときには、直列並列切換リレー６を並列
モードにする。このためバッテリーＢ1 ，Ｂ2 は並列接
続され、発電機５により充電されると共に各電装品（電
気加熱触媒３を除く）に電力を供給する。また電気加熱
触媒３には通電されないが、触媒担体が所電温度以上と
なり活性化しているため、排気ガスの浄化は確実にでき
る。When the temperature of the electrically heated catalyst 3 is equal to or higher than a predetermined temperature (the temperature at which the catalyst carrier is activated), the controller 7 sets the series / parallel switching relay 6 in the parallel mode. Therefore, the batteries B 1 and B 2 are connected in parallel, charged by the generator 5, and supply electric power to each electric component (excluding the electric heating catalyst 3). Further, although the electrically heated catalyst 3 is not energized, the catalyst carrier is activated at a temperature equal to or higher than the predetermined temperature so that the exhaust gas can be reliably purified.
【００１４】コントローラ７は、電気加熱触媒３の温度
があらかめ決めた所定温度未満で且つバッテリーＢ1 ，
Ｂ2 の充電容量が共にあらかじめ決めた所定容量（過放
電しない容量以上の値）以上であるときには、切換リレ
ー６を直列モードにする。このためバッテリーＢ1 ，Ｂ
2 は直列接続され、２つのバッテリーＢ1 ，Ｂ2 により
電気加熱触媒３に電気が流される。このため通電により
電気加熱触媒３の温度が上昇し、触媒担体が活性化して
くる。電気加熱触媒３の温度が所定温度に達したり、電
気加熱触媒３に通電する時間が所定時間になったり、冷
却水温度が所定温度以上になったら、バッテリーＢ1，
Ｂ2 を並列接続に戻し、電気加熱触媒３への通電を停止
する。The controller 7 determines that the temperature of the electrically heated catalyst 3 is lower than the predetermined temperature and the battery B 1 ,
When both the charging capacities of B 2 are equal to or more than a predetermined capacity (a value not less than the capacity that does not cause over-discharge), the switching relay 6 is set to the serial mode. Therefore, the batteries B 1 , B
2 are connected in series, and electricity is supplied to the electrically heated catalyst 3 by the two batteries B 1 and B 2 . Therefore, the temperature of the electrically heated catalyst 3 rises due to energization, and the catalyst carrier is activated. When the temperature of the electrically heated catalyst 3 reaches a predetermined temperature, the time for energizing the electrically heated catalyst 3 reaches a predetermined time, or the cooling water temperature becomes a predetermined temperature or higher, the battery B 1 ,
B 2 is returned to the parallel connection, and the power supply to the electrically heated catalyst 3 is stopped.
【００１５】コントローラ７は、電気加熱触媒３の温度
があらかじめ決めた所定温度未満であっても、バッテリ
ーＢ1 ，Ｂ2 の充電容量が１つでもあらかじめ決めた所
定量未満であるときには、直列並列切換リレー６を直列
モードにすることなく並列モードのまま保持する。この
ようにすることにより、バッテリーＢ1 ，Ｂ2 を充電
し、バッテリーＢ1 ，Ｂ2 の過放電防止を優先する。Even if the temperature of the electrically heated catalyst 3 is lower than a predetermined temperature, the controller 7 is connected in series / parallel if the charging capacity of any one of the batteries B 1 and B 2 is lower than the predetermined temperature. The switching relay 6 is maintained in the parallel mode without being set in the serial mode. By doing so, the batteries B 1 and B 2 are charged, and the over-discharge prevention of the batteries B 1 and B 2 is prioritized.
【００１６】なお、バッテリーＢ1 ，Ｂ2 の充電容量を
検出するため、バッテリーＢ1 ，Ｂ 2 の液量，温度，濃
度を計測したり、バッテリーＢ1 ，Ｂ2 の充放電量の積
算値を求めたりしてもよい。またバッテリーを３個以上
備えるようにしてもよい。Battery B1, B2The charging capacity of
Battery B to detect1, B 2Liquid volume, temperature, concentration
Measure the battery B1, B2Product of charge and discharge
You may ask for an arithmetic value. Also 3 or more batteries
It may be provided.
【００１７】また、バッテリー容量が所定容量未満にな
ったら警告灯で知らせ、並列モードにするようにしても
よい。更にバッテリーの容量が所定容量未満となった状
態が所定時間続くと並列モードにするようにしてもよ
い。Further, when the battery capacity becomes less than a predetermined capacity, a warning light may be used to notify and a parallel mode may be set. Further, the parallel mode may be set when the state where the battery capacity becomes less than the predetermined capacity continues for a predetermined time.
【００１８】[0018]
【発明の効果】以上実施例と共に具体的に説明したよう
に本発明によれば、バッテリーの充電容量が少ないとき
には、大電力を消費する電気加熱触媒への通電を禁止し
ているので、バッテリーが過放電することなく安全な運
転が確保できる。As described above in detail with the embodiments, according to the present invention, when the charge capacity of the battery is small, energization of the electric heating catalyst that consumes a large amount of electric power is prohibited. Safe operation can be secured without over discharge.
【図１】本発明の実施例を示す構成図。FIG. 1 is a configuration diagram showing an embodiment of the present invention.
１ シリンダ ２ 排気管 ３ 電気加熱触媒 ４ 触媒 ５ 発電機 ６ 直列並列切換リレー ７ コントローラ Ｂ1 ，Ｂ2 バッテリー1 cylinder 2 exhaust pipe 3 electrically heated catalyst 4 catalyst 5 generator 6 series / parallel switching relay 7 controller B 1 , B 2 battery
Claims (1)
排気管に備えられると共に上記バッテリーから通電する
ことにより発熱する電気抵抗体を有する電気加熱触媒
と、上記複数のバッテリーを充電する充電手段と、上記
電気加熱触媒への通電時には上記複数のバッテリーを直
列に接続して直列接続したバッテリーを上記電気加熱触
媒に接続すると共に充電時には上記複数のバッテリーを
並列に接続して並列接続したバッテリーを上記充電手段
に接続する直列並列切換手段と、上記バッテリーの充電
容量を検出する検出手段と、この検出手段で検出した充
電容量のうち少なくとも一つがあらかじめ決めた値より
も小さくなったら上記電気加熱触媒への通電を禁止して
上記バッテリーを充電するように上記直列並列切換手段
の切換動作を制御する制御手段とを有することを特徴と
する電気加熱触媒制御装置。1. An electric heating catalyst having a plurality of batteries, an electric resistor provided in an exhaust pipe of an automobile engine and generating heat when energized from the battery, a charging means for charging the plurality of batteries, When the electric heating catalyst is energized, the plurality of batteries are connected in series and the batteries connected in series are connected to the electric heating catalyst, and at the time of charging, the plurality of batteries are connected in parallel and the battery connected in parallel is the charging means. To the electric heating catalyst when at least one of the charging capacities detected by the detecting means and the detecting means for detecting the charging capacity of the battery is smaller than a predetermined value. And controlling the switching operation of the series-parallel switching means so as to charge the battery by prohibiting An electrically heated catalyst control device comprising: a control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5253907A JPH07102968A (en) | 1993-10-12 | 1993-10-12 | Electric heating catalyst controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5253907A JPH07102968A (en) | 1993-10-12 | 1993-10-12 | Electric heating catalyst controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07102968A true JPH07102968A (en) | 1995-04-18 |
Family
ID=17257722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5253907A Pending JPH07102968A (en) | 1993-10-12 | 1993-10-12 | Electric heating catalyst controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07102968A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011077535A1 (en) * | 2009-12-24 | 2011-06-30 | トヨタ自動車株式会社 | Electrically powered vehicle |
| CN111441849A (en) * | 2019-01-17 | 2020-07-24 | 丰田自动车株式会社 | Abnormality detection device for electrically heated catalyst |
| CN113442898A (en) * | 2021-06-18 | 2021-09-28 | 浙江吉利控股集团有限公司 | Three-way catalyst preheating control method and system, vehicle and storage medium |
| AU2018336821B2 (en) * | 2017-09-22 | 2021-11-11 | The Noco Company | Rechargeable battery jump starting device with leapfrog charging system |
-
1993
- 1993-10-12 JP JP5253907A patent/JPH07102968A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011077535A1 (en) * | 2009-12-24 | 2011-06-30 | トヨタ自動車株式会社 | Electrically powered vehicle |
| JP5282830B2 (en) * | 2009-12-24 | 2013-09-04 | トヨタ自動車株式会社 | Electric drive vehicle |
| AU2022200459B2 (en) * | 2017-09-22 | 2023-07-27 | The Noco Company | Rechargeable battery jump starting device with leapfrog charging system |
| AU2018336821B2 (en) * | 2017-09-22 | 2021-11-11 | The Noco Company | Rechargeable battery jump starting device with leapfrog charging system |
| US11394213B2 (en) * | 2017-09-22 | 2022-07-19 | The Noco Company | Rechargeable battery jump starting device with leapfrog charging system |
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