JP6467451B2 - 車両用電源装置 - Google Patents
車両用電源装置 Download PDFInfo
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- JP6467451B2 JP6467451B2 JP2017063514A JP2017063514A JP6467451B2 JP 6467451 B2 JP6467451 B2 JP 6467451B2 JP 2017063514 A JP2017063514 A JP 2017063514A JP 2017063514 A JP2017063514 A JP 2017063514A JP 6467451 B2 JP6467451 B2 JP 6467451B2
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- 238000010248 power generation Methods 0.000 claims description 33
- 230000002159 abnormal effect Effects 0.000 claims description 31
- 230000000903 blocking effect Effects 0.000 claims description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 78
- 229910001416 lithium ion Inorganic materials 0.000 description 78
- 239000007858 starting material Substances 0.000 description 73
- 238000000034 method Methods 0.000 description 35
- 230000001172 regenerating effect Effects 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- 230000002265 prevention Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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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
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
- B60L58/14—Preventing excessive discharging
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- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
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- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L58/13—Maintaining the SoC within a determined range
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B60L7/00—Electrodynamic brake systems for vehicles in general
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
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- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
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- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/04—Arrangement of batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1423—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple batteries
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B60L2240/00—Control parameters of input or output; Target parameters
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- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/46—The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles
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- 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
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Description
車両用電源装置10が備える電源回路30について説明する。図2は電源回路30の一例を示す回路図である。図2に示すように、電源回路30は、スタータジェネレータ16に電気的に接続される鉛バッテリ(第1蓄電体)31と、これと並列にスタータジェネレータ16に電気的に接続されるリチウムイオンバッテリ(第2蓄電体)32と、を備えている。なお、リチウムイオンバッテリ32を積極的に放電させるため、リチウムイオンバッテリ32の端子電圧は、鉛バッテリ31の端子電圧よりも高く設計されている。また、リチウムイオンバッテリ32を積極的に充放電させるため、リチウムイオンバッテリ32の内部抵抗は、鉛バッテリ31の内部抵抗よりも小さく設計されている。
リチウムイオンバッテリ32の充放電制御について説明する。リチウムイオンバッテリ32の充放電を制御するため、車両用電源装置10にはマイコン等からなるメインコントローラ60が設けられている。メインコントローラ60や前述した各コントローラ23,42は、CANやLIN等の車載ネットワーク61を介して互いに通信自在に接続されている。メインコントローラ60は、リチウムイオンバッテリ32の充電状態SOCに基づいて、スタータジェネレータ16を発電状態または発電休止状態に制御することにより、リチウムイオンバッテリ32の充放電を制御する。なお、充電状態SOC(state of charge)とは、バッテリの設計容量に対する蓄電量の比率である。この充電状態SOCは、バッテリコントローラ42からメインコントローラ60に送信される。
続いて、鉛バッテリ31を保護するバッテリ保護制御について説明する。このバッテリ保護制御は、メインコントローラ60によって所定周期毎に実行される。図5はバッテリ保護制御の実行手順の一例を示すフローチャートである。また、図6は図5に示されるステップS13の詳細手順の一例を示すフローチャートであり、図7は図5に示されるステップS14の詳細手順の一例を示すフローチャートである。また、図8〜図13は、バッテリ保護制御の各過程における電力供給状況を示す図である。なお、図5〜図13には、スイッチSW1,SW2の導通状態がONとして記載され、スイッチSW1,SW2の遮断状態がOFFとして記載される。また、図5〜図7には、スタータジェネレータ16がISGとして記載され、鉛バッテリ31がPbBとして記載され、リチウムイオンバッテリ32がLIBとして記載される。
12 エンジン
16 スタータジェネレータ(モータジェネレータ)
31 鉛バッテリ(第1蓄電体)
32 リチウムイオンバッテリ(第2蓄電体)
42 バッテリコントローラ(蓄電体判定部)
51 横滑り防止装置(大容量負荷)
52 電動パワーステアリング装置(大容量負荷)
53 ヘッドライト(大容量負荷)
60 メインコントローラ
70 スイッチ制御部
71 バッテリ判定部(蓄電体判定部)
72 モータ制御部
Claims (6)
- 車両に搭載される車両用電源装置であって、
エンジンに連結されるモータジェネレータと、
前記モータジェネレータに接続される第1蓄電体と、
前記第1蓄電体と並列に前記モータジェネレータに接続される第2蓄電体と、
前記モータジェネレータと前記第1蓄電体とを接続する導通状態と、前記モータジェネレータと前記第1蓄電体とを切り離す遮断状態と、に切り替えられるスイッチと、
前記モータジェネレータが力行状態に制御される場合に、前記スイッチを導通状態から遮断状態に切り替えるスイッチ制御部と、
前記第2蓄電体が正常に放電できる正常状態であるか、前記第2蓄電体が正常に放電できない異常状態であるかを判定する蓄電体判定部と、
を有し、
前記スイッチ制御部は、
前記モータジェネレータの力行制御に伴い前記スイッチが遮断状態に切り替えられ、かつ前記第2蓄電体が正常状態であると判定された状態のもとで、前記第1蓄電体が閾値を上回って放電する場合には、前記スイッチを遮断状態から導通状態に切り替える一方、
前記モータジェネレータの力行制御に伴い前記スイッチが遮断状態に切り替えられ、かつ前記第2蓄電体が異常状態であると判定された状態のもとで、前記第1蓄電体が閾値を上回って放電する場合には、前記スイッチの遮断状態を維持し、
前記モータジェネレータを制御するモータ制御部は、前記第2蓄電体が異常状態であると判定されることで前記スイッチの遮断状態が維持された場合に、前記モータジェネレータを力行状態から発電状態に切り替える、
車両用電源装置。 - 請求項1に記載の車両用電源装置において、
前記スイッチとしての第1スイッチと、
前記モータジェネレータと前記第2蓄電体とを接続する導通状態と、前記モータジェネレータと前記第2蓄電体とを切り離す遮断状態と、に切り替えられる第2スイッチと、
を有し、
前記スイッチ制御部は、前記第2蓄電体が異常状態であると判定されることで前記第1スイッチの遮断状態が維持された場合に、前記第2スイッチを導通状態から遮断状態に切り替える、
車両用電源装置。 - 請求項1または2に記載の車両用電源装置において、
前記蓄電体判定部は、
前記モータジェネレータが力行状態に制御される状況のもとで、前記第2蓄電体の放電電流が電流閾値を上回る場合に、前記第2蓄電体が正常状態であると判定し、
前記モータジェネレータが力行状態に制御される状況のもとで、前記第2蓄電体の放電電流が前記電流閾値を下回る場合に、前記第2蓄電体が異常状態であると判定する、
車両用電源装置。 - 請求項1〜3のいずれか1項に記載の車両用電源装置において、
前記蓄電体判定部は、
前記第2蓄電体の充電状態が蓄電閾値を上回る場合に、前記第2蓄電体が正常状態であると判定し、
前記第2蓄電体の充電状態が前記蓄電閾値を下回る場合に、前記第2蓄電体が異常状態であると判定する、
車両用電源装置。 - 請求項1〜4のいずれか1項に記載の車両用電源装置において、
前記蓄電体判定部は、
前記第2蓄電体の内部抵抗が抵抗閾値を下回る場合に、前記第2蓄電体が正常状態であると判定し、
前記第2蓄電体の内部抵抗が前記抵抗閾値を上回る場合に、前記第2蓄電体が異常状態であると判定する、
車両用電源装置。 - 請求項1〜5のいずれか1項に記載の車両用電源装置において、
前記第1蓄電体が閾値を上回って放電する場合とは、前記第1蓄電体の放電電流が電流閾値を上回る場合と、前記第1蓄電体の端子電圧が電圧閾値を下回る場合と、前記第1蓄電体に接続される大容量負荷が作動する場合と、の少なくともいずれかの場合である、
車両用電源装置。
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