To provide a battery pack suitable for auxiliary battery by lithium ion battery.SOLUTION: A battery pack includes an electric cell group. The electric cell group is formed by series connection of multiple electric cells. Each of the multiple electric cells is a lithium ion battery. The electric cell group consists of at least one of one or more first electric cells and second electric cells and one or more third electric cells. Positive electrode active material of the first electric cells contains a lithium nickel composite oxide. Negative electrode active material of the second electric cells contains a lithium titanium composite oxide. Positive electrode active material of the third electric cells contains lithium iron phosphate. The battery pack has a voltage of 11.8-14.5 V, in SOC of 20%-80%.SELECTED DRAWING: Figure 9
【課題】リチウムイオン電池により補機電池に適した組電池を提供すること。【解決手段】組電池は単電池群を含む。単電池群は、複数個の単電池が直列接続されることにより形成されている。複数個の単電池の各々はリチウムイオン電池である。単電池群は、1個以上の第1単電池および1個以上の第2単電池の少なくとも一方と、1個以上の第3単電池とからなる。第1単電池の正極活物質はリチウムニッケル複合酸化物を含む。第2単電池の負極活物質はリチウムチタン複合酸化物を含む。第3単電池の正極活物質はリン酸鉄リチウムを含む。組電池は20%以上80%以下のSOCにおいて、11.8V以上14.5V以下の電圧を有する。【選択図】図9
BATTERY PACK, VEHICLE, AND MANUFACTURING METHOD OF BATTERY PACK
組電池、車両、および組電池の製造方法
2020-01-09
Patent
Electronic Resource
Japanese
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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