HYBRID VEHICLE

• Main Author: IZUMI JUNTA
• Format: Patent
• Language: English; Japanese
• Published: 24.08.2017
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PERFORMING OPERATIONS; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING; TRANSPORTING; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To appropriately protect a battery in a hybrid vehicle in which external charging can be performed.SOLUTION: A battery 100 includes a plurality of blocks 101 to 10n connected in series. Each of the plurality of blocks 101 to 10n has a plurality of cells 110 connected in parallel. A vehicle 1 has an ECU 300 that controls charging and discharging of the battery 100 so as to prevent power charged into the battery 100 from exceeding a charged-power upper limit value Win and also prevent power discharged from the battery 100 from exceeding a discharged-power upper limit value Wout. Using an elapsed time T after external charging and the probability that any of the plurality of cells 110 may fail per unit time (failure occurrence probability), the ECU 300 calculates the number of cells that have failed (the number N of open failures). The larger the number N of open failures is, the lower the charged-power upper limit value Win and the discharged-power upper limit value Wout are set.SELECTED DRAWING: Figure 7 【課題】外部充電を実施可能に構成されたハイブリッド車両において、バッテリを適切に保護する。【解決手段】バッテリ１００は、互いに直列に接続された複数のブロック１０１〜１０ｎを含む。複数のブロック１０１〜１０ｎの各々は、互いに並列に接続された複数のセル１１０を有する。車両１は、バッテリ１００への充電電力が充電電力上限値Ｗｉｎを上回らず、かつ、バッテリ１００からの放電電力が放電電力上限値Ｗｏｕｔを上回らないようにバッテリ１００の充放電を制御するＥＣＵ３００を備える。ＥＣＵ３００は、外部充電実施後の経過時間Ｔと、単位時間当たりに複数のセル１１０のうちのいずれかのセルに故障が発生する確率（故障発生確率）とを用いて、故障したセルの数（オープン故障数Ｎ）を算出し、オープン故障数Ｎが大きいほど、充電電力上限値Ｗｉｎおよび放電電力上限値Ｗｏｕｔを低く設定する。【選択図】図７