JP7070293B2 - 充電装置 - Google Patents
充電装置 Download PDFInfo
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- JP7070293B2 JP7070293B2 JP2018182509A JP2018182509A JP7070293B2 JP 7070293 B2 JP7070293 B2 JP 7070293B2 JP 2018182509 A JP2018182509 A JP 2018182509A JP 2018182509 A JP2018182509 A JP 2018182509A JP 7070293 B2 JP7070293 B2 JP 7070293B2
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- phase
- storage battery
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- winding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
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- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/11—DC charging controlled by the charging station, e.g. mode 4
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- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
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- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
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- H—ELECTRICITY
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
図1は、第1実施形態の充電装置を模式的に示す図である。図1に示すように、第1実施形態の充電装置1は、二つの蓄電池2,3と二つのインバータ4,5とによって、一つのモータ6を駆動する電源回路10を含んで構成されている。この電源回路10はダブルエンド型インバータシステムである。また、充電装置1は、二つのインバータ4,5を制御する制御部7と、外部電源である充電器100と接続する充電ポート8を備えている。
第2実施形態の充電装置1は、二つの蓄電池2,3を並列に接続した状態で外部電源からの電力を各蓄電池2,3に充電中、三相の巻線21,22,23で生じる発熱量を均等化するように構成されている。なお、第2実施形態の説明では、第1実施形態と同様の構成については説明を省略し、その参照符号を引用する。
2 第1蓄電池
3 第2蓄電池
4 第1インバータ
5 第2インバータ
6 モータ
7 制御部
8 充電ポート
8A 正極端子
8B 負極端子
10 電源回路
11 第1接続点
12 第2接続点
21 U相の巻線
22 V相の巻線
23 W相の巻線
41,51 U相の上下アーム
42,52 V相の上下アーム
43,53 W相の上下アーム
41a,41b,42a,42b,43a,43b,51a,51b,52a,52b,53a,53b スイッチング素子
100 充電器
Claims (11)
- 第1蓄電池と、前記第1蓄電池から出力される直流電力を交流電力に変換して三相交流電動機に供給する第1インバータと、第2蓄電池と、前記第2蓄電池から出力される直流電力を交流電力に変換して前記三相交流電動機に供給する第2インバータとを有し、二つの前記第1および第2蓄電池と二つの前記第1および第2インバータとによって一つの前記三相交流電動機を駆動する電源回路と、
前記第1蓄電池および前記第2蓄電池に外部電源からの電力を充電する際に前記外部電源と接続する充電ポートと、
前記第1インバータおよび前記第2インバータを制御する制御部と、
を備え、
前記電源回路では、前記第1蓄電池と前記第2蓄電池とが前記第1インバータと前記三相交流電動機と前記第2インバータとを介して接続され、
前記第1インバータおよび前記第2インバータはそれぞれ、前記三相交流電動機の各相に対応するスイッチング素子として、各相の上下アームを構成する六つのスイッチング素子を有する充電装置であって、
前記充電ポートの正極端子は、前記第1蓄電池の正極と前記第1インバータとの間の正極側ライン上に設けられた第1接続点に接続されており、
前記充電ポートの負極端子は、前記第2蓄電池の負極と前記第2インバータとの間の負極側ライン上に設けられた第2接続点に接続されており、
前記電源回路は、前記第1インバータと前記第2インバータとによって前記第1蓄電池と前記第2蓄電池との接続状態が並列と直列とに切り替わり、
前記制御部は、
前記外部電源から出力される電力が所定の第1電力である場合には、当該第1電力を各蓄電池に充電する際に、前記第1蓄電池と前記第2蓄電池とを並列に接続した状態となるように前記スイッチング素子のオンとオフとを制御し、
前記外部電源から出力される電力が前記第1電力よりも大きい第2電力である場合には、当該第2電力を各蓄電池に充電する際に、前記第1蓄電池と前記第2蓄電池とを直列に接続した状態となるように前記スイッチング素子のオンとオフとを制御する
ことを特徴とする充電装置。 - 前記第1電力は、最大電圧が第1値で最大電流が所定電流値となる電力であり、
前記第2電力は、最大電圧が前記第1値よりも大きい第2値で最大電流が前記所定電流値となる電力である
ことを特徴とする請求項1に記載の充電装置。 - 前記第1蓄電池の電圧および前記第2蓄電池の電圧は、前記第1値に設定され、
前記第1蓄電池の電圧と前記第2蓄電池の電圧との和は、前記第2値となるように設定されている
ことを特徴とする請求項2に記載の充電装置。 - 前記制御部は、前記第1蓄電池と前記第2蓄電池とを直列に接続する際、前記第1インバータでは上アームの三つのスイッチング素子をオフにし、かつ前記第2インバータでは下アームの三つのスイッチング素子をオフにするとともに、前記三相交流電動機の三相の巻線のうち少なくとも一相の巻線を電流が流れるように前記第1インバータの下アームと前記第2インバータの上アームとに含まれるスイッチング素子のオンとオフとを制御する
ことを特徴とする請求項1から3のうちのいずれか一項に記載の充電装置。 - 前記制御部は、前記外部電源からの電力を各蓄電池に充電する際、前記三相交流電動機の三相の巻線でそれぞれに生じる発熱量の差を少なくする均等化制御を実施し、
前記均等化制御は、前記スイッチング素子のオンとオフとを切り替える制御である
ことを特徴とする請求項1から4のうちのいずれか一項に記載の充電装置。 - 前記制御部は、前記第1蓄電池と前記第2蓄電池とを並列に接続して前記第1電力を各蓄電池に充電する際、前記均等化制御として、三相のうちいずれか一相の巻線を流れる電流の第1電流値が、残りの二相の巻線を流れる電流の第2電流値よりも大きくなる接続状態に前記スイッチング素子のオンとオフとを制御する
ことを特徴とする請求項5に記載の充電装置。 - 前記制御部は、前記三相の巻線の温度のうちいずれかの相の温度が所定閾値よりも高い場合には、前記三相の巻線のうち最も温度が低い巻線に前記第1電流値の電流が流れるように前記スイッチング素子のオンとオフとを切り替える
ことを特徴とする請求項6に記載の充電装置。 - 前記制御部は、前記三相の巻線の温度のうちいずれかの相の温度が所定閾値よりも高い場合には、U相の巻線とV相の巻線とW相の巻線とに順番に前記第1電流値の電流が流れるように前記スイッチング素子のオンとオフとを切り替える
ことを特徴とする請求項6に記載の充電装置。 - 前記制御部は、前記均等化制御中に所定時間が経過した場合には、前記三相の巻線のうち最も温度が低い巻線に前記第1電流値の電流が流れるように前記スイッチング素子のオンとオフとを切り替える
ことを特徴とする請求項6に記載の充電装置。 - 前記制御部は、前記均等化制御中に所定時間が経過した場合には、U相の巻線とV相の巻線とW相の巻線とに順番に前記第1電流値の電流が流れるように前記スイッチング素子のオンとオフとを切り替える
ことを特徴とする請求項6に記載の充電装置。 - 前記制御部は、前記第1蓄電池と前記第2蓄電池とを直列に接続して前記第2電力を各蓄電池に充電する際、前記均等化制御として、前記第1インバータに含まれるスイッチング素子のうち三相すべての下アーム素子をオンにし、かつ前記第2インバータに含まれるスイッチング素子のうち三相すべての上アーム素子をオンにする
ことを特徴とする請求項5から10のうちのいずれか一項に記載の充電装置。
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