JP4840481B2 - 二次電池の昇温制御装置およびそれを備える車両、ならびに二次電池の昇温制御方法 - Google Patents
二次電池の昇温制御装置およびそれを備える車両、ならびに二次電池の昇温制御方法 Download PDFInfo
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Description
図1は、この発明の実施の形態1による二次電池の昇温制御装置の一適用例として示される電動車両の全体ブロック図である。図1を参照して、電動車両100は、二次電池10と、昇圧コンバータ22と、コンデンサCHと、インバータ30と、モータジェネレータ40と、駆動輪50とを備える。また、電動車両100は、ECU(Electronic Control Unit)60と、電流センサ72と、電圧センサ74,76と、温度センサ78をさらに備える。
図3は、二次電池10の電圧の内訳を示した図である。なお、この図3では、簡単のため、内部抵抗は実部のみとし、L,C等による虚部は無いものとする。図3を参照して、二次電池10の端子間に発生する電圧Vは、開回路電圧OCVに、通電時に内部抵抗12に発生する電圧ΔVを考慮したものとなる。具体的には、充電電流が流れるときは、V=OCV+ΔVとなり、放電電流が流れるときは、V=OCV−ΔVとなる(ΔV>0)。
=I×ΔV …(2)
=ΔV2/R …(3)
この(1)〜(3)式は等価である。(1)式によると、リップル生成部20を用いて発生させるリップル電流Iを大きくすれば、二次電池10を効果的に昇温できるようにみえる。しかしながら、実際には、二次電池の電圧Vについて、安全性や耐久性の観点から上下限電圧を守ることが要求される。そして、特に極低温下では、内部抵抗12の抵抗値Rが大きくなることにより電圧ΔVが大きくなるので、二次電池10の電圧Vを上下限内に抑えつつ発熱のための十分なリップル電流Iを流すことができないという事態が発生し得る。
次に、ECU60により実行される二次電池10の昇温制御について説明する。
ここで、Lは昇圧コンバータ22のリアクトルのインダクタンスを示し、fは昇圧コンバータ22のスイッチング周波数(=リップル周波数,キャリア周波数)を示す。
実施の形態1では、昇圧コンバータ22のキャリア周波数(リップル周波数)を変更することによってリップル電流が目標となるようにリップル電流を調整したが、実施の形態2では、昇圧コンバータ22の昇圧比を調整(スイッチング素子Q1,Q2のスイッチングデューティーを調整)することによってリップル電流を調整する。
Claims (7)
- 二次電池の昇温制御装置であって、
前記二次電池を昇温するためにリップル電流を二次電池に発生させるリップル生成部と、
前記リップル電流が所定の目標となるように前記リップル生成部を制御するフィードバック制御部とを備え、
前記所定の目標は、前記二次電池の電圧が上下限電圧を超えず、かつ、前記二次電池の電流が最大充放電電流を超えない範囲で前記リップル電流が最大となるように設定され、
前記フィードバック制御部は、前記リップル電流が前記目標よりも小さいとき、前記リップル電流の周波数が低下するように前記リップル生成部を制御し、前記リップル電流が前記目標よりも大きいとき、前記リップル電流の周波数が上昇するように前記リップル生成部を制御する、二次電池の昇温制御装置。 - 前記リップル生成部は、前記二次電池の電圧以上に出力電圧を昇圧可能に構成されたチョッパ型の昇圧装置を含み、
前記フィードバック制御部は、前記リップル電流が前記目標よりも小さいとき、前記昇圧装置のキャリア周波数を低下させ、前記リップル電流が前記目標よりも大きいとき、前記昇圧装置のキャリア周波数を上昇させる、請求項1に記載の二次電池の昇温制御装置。 - 二次電池の昇温制御装置であって、
前記二次電池を昇温するためにリップル電流を二次電池に発生させるリップル生成部と、
前記リップル電流が所定の目標となるように前記リップル生成部を制御するフィードバック制御部とを備え、
前記所定の目標は、前記二次電池の電圧が上下限電圧を超えず、かつ、前記二次電池の電流が最大充放電電流を超えない範囲で前記リップル電流が最大となるように設定され、
前記リップル生成部は、前記二次電池の電圧以上に出力電圧を昇圧可能に構成されたチョッパ型の昇圧装置を含み、
前記フィードバック制御部は、前記リップル電流が前記目標よりも小さいとき、前記昇圧装置による昇圧比を増大させ、前記リップル電流が前記目標よりも大きいとき、前記電圧昇圧比を低下させる、二次電池の昇温制御装置。 - 前記二次電池の充放電電流を検出するための電流検出部と、
前記二次電池の電圧を検出するための電圧検出部とをさらに備える、請求項1から3のいずれかに記載の二次電池の昇温制御装置。 - 前記二次電池の温度を検出するための温度検出部と、
前記二次電池の残存容量を推定する残存容量推定部とをさらに備え、
前記フィードバック制御部は、前記温度検出部により検出される温度が第1の所定値に達するか、または前記残存容量推定部により推定される残存容量が第2の所定値に達すると、前記リップル生成部の制御を停止する、請求項1から請求項4のいずれかに記載の二次電池の昇温制御装置。 - 車両走行用の電力を蓄える二次電池と、
請求項1から5のいずれかに記載の二次電池の昇温制御装置とを備える車両。 - リップル電流を二次電池に発生させるリップル生成部を制御することによって前記二次電池を昇温するための二次電池の昇温制御方法であって、
前記リップル電流が所定の目標となっているか否かを判定するステップを含み、
前記所定の目標は、前記二次電池の電圧が上下限電圧を超えず、かつ、前記二次電池の電流が最大充放電電流を超えない範囲で前記リップル電流が最大となるように設定され、さらに
前記リップル電流が前記目標となっていないと判定されると、前記リップル電流が前記目標以上か否かを判定するステップと、
前記リップル電流が前記目標よりも小さいと判定されると、前記リップル電流の周波数が低下するように前記リップル生成部を制御するステップと、
前記リップル電流が前記目標以上であると判定されると、前記リップル電流の周波数が上昇するように前記リップル生成部を制御するステップとを含む、二次電池の昇温制御方法。
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JP2009161924A JP4840481B2 (ja) | 2009-07-08 | 2009-07-08 | 二次電池の昇温制御装置およびそれを備える車両、ならびに二次電池の昇温制御方法 |
EP10739692A EP2451673A2 (en) | 2009-07-08 | 2010-07-07 | Secondary battery temperature-increasing control apparatus and vehicle including the same, and secondary battery temperature-increasing control method |
CA2763682A CA2763682C (en) | 2009-07-08 | 2010-07-07 | Secondary battery temperature-increasing control apparatus and vehicle including the same, and secondary battery temperature-increasing control method |
KR1020127000447A KR101190337B1 (ko) | 2009-07-08 | 2010-07-07 | 2차 전지 승온 제어 장치, 이를 구비하는 차량, 및 2차 전지 승온 제어 방법 |
PCT/IB2010/001669 WO2011004250A2 (en) | 2009-07-08 | 2010-07-07 | Secondary battery temperature-increasing control apparatus and vehicle including the same, and secondary battery temperature-increasing control method |
CN2010800304469A CN102470760B (zh) | 2009-07-08 | 2010-07-07 | 二次电池升温控制装置和包括该装置的车辆以及二次电池升温控制方法 |
US13/382,672 US8248033B2 (en) | 2009-07-08 | 2010-07-07 | Secondary battery temperature-increasing control apparatus and vehicle including the same, and secondary battery temperature-increasing control method |
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Cited By (7)
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US9201122B2 (en) | 2012-02-16 | 2015-12-01 | Allegro Microsystems, Llc | Circuits and methods using adjustable feedback for self-calibrating or self-testing a magnetic field sensor with an adjustable time constant |
US9638764B2 (en) | 2015-04-08 | 2017-05-02 | Allegro Microsystems, Llc | Electronic circuit for driving a hall effect element with a current compensated for substrate stress |
US9645220B2 (en) | 2014-04-17 | 2017-05-09 | Allegro Microsystems, Llc | Circuits and methods for self-calibrating or self-testing a magnetic field sensor using phase discrimination |
US9735773B2 (en) | 2014-04-29 | 2017-08-15 | Allegro Microsystems, Llc | Systems and methods for sensing current through a low-side field effect transistor |
US10107873B2 (en) | 2016-03-10 | 2018-10-23 | Allegro Microsystems, Llc | Electronic circuit for compensating a sensitivity drift of a hall effect element due to stress |
US10162017B2 (en) | 2016-07-12 | 2018-12-25 | Allegro Microsystems, Llc | Systems and methods for reducing high order hall plate sensitivity temperature coefficients |
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- 2010-07-07 CN CN2010800304469A patent/CN102470760B/zh not_active Expired - Fee Related
- 2010-07-07 EP EP10739692A patent/EP2451673A2/en not_active Withdrawn
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US9638764B2 (en) | 2015-04-08 | 2017-05-02 | Allegro Microsystems, Llc | Electronic circuit for driving a hall effect element with a current compensated for substrate stress |
US10107873B2 (en) | 2016-03-10 | 2018-10-23 | Allegro Microsystems, Llc | Electronic circuit for compensating a sensitivity drift of a hall effect element due to stress |
US10254354B2 (en) | 2016-03-10 | 2019-04-09 | Allegro Microsystems, Llc | Electronic circuit for compensating a sensitivity drift of a hall effect element due to stress |
US10162017B2 (en) | 2016-07-12 | 2018-12-25 | Allegro Microsystems, Llc | Systems and methods for reducing high order hall plate sensitivity temperature coefficients |
US10746818B2 (en) | 2016-07-12 | 2020-08-18 | Allegro Microsystems, Llc | Systems and methods for reducing high order hall plate sensitivity temperature coefficients |
US10520559B2 (en) | 2017-08-14 | 2019-12-31 | Allegro Microsystems, Llc | Arrangements for Hall effect elements and vertical epi resistors upon a substrate |
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CA2763682C (en) | 2012-08-21 |
EP2451673A2 (en) | 2012-05-16 |
CN102470760B (zh) | 2013-08-14 |
WO2011004250A2 (en) | 2011-01-13 |
JP2011018533A (ja) | 2011-01-27 |
CA2763682A1 (en) | 2011-01-13 |
CN102470760A (zh) | 2012-05-23 |
KR20120014082A (ko) | 2012-02-15 |
WO2011004250A3 (en) | 2011-06-03 |
KR101190337B1 (ko) | 2012-10-11 |
US8248033B2 (en) | 2012-08-21 |
US20120112695A1 (en) | 2012-05-10 |
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