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公开(公告)号：US20180006338A1
公开(公告)日：2018-01-04
申请号：US15689753
申请日：2017-08-29
Applicant: Kabushiki Kaisha Toshiba
Inventor： Tetsuya SASAKAWA , Norio Takami
CPC classification number: H01M10/46 , H01M2/1016 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/58 , H01M4/5825 , H01M10/0525 , H01M16/00 , H01M2004/028
Abstract: There are provided an assembled battery and a battery pack having excellent cycle characteristics with respect to high rate charging and discharging. An assembled battery according to an embodiment includes at least one first single cell and at least one second single cell that are connected in series. The first single cell includes a positive electrode containing an active material represented by the general formula LiMO2 (M includes at least one element selected from the group consisting of Ni, Co, and Mn) and a negative electrode including a titanium-containing oxide. The second single cell includes a positive electrode containing an active material represented by the general formula LiM′PO4 (M′ includes at least one element selected from the group consisting of Fe, Mn, Co, and Ni) and a negative electrode including a titanium-containing oxide. The ratio of a charging resistance of the second single cell to a charging resistance of the first single cell is 1 or more and 1.5 or less if an open circuit voltage when the at least one first single cell and the at least one second single cell are connected in series is 4.5 V.
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公开(公告)号：US20170271707A1
公开(公告)日：2017-09-21
申请号：US15392009
申请日：2016-12-28
Applicant: Kabushiki Kaisha Toshiba
Inventor： Tetsuya SASAKAWA , Kazuomi YOSHIMA , Yasuhiro HARADA , Norio TAKAMI
IPC: H01M10/04 , H01M2/20 , H01M10/42 , H01M2/10 , H01M10/0525 , H01M10/0585
Abstract: A non-aqueous electrolyte battery includes an electrode group including positive, negative and bipolar electrodes and separators interposed between these electrodes. In the positive electrode, positive electrode active material layers are formed on both side surfaces of a current collector. In the negative electrode, negative electrode active material layers are formed on both side surfaces of a current collector. In the bipolar electrode, positive and negative electrode active material layers are formed on both side surfaces of a current collector respectively. In the group, these electrodes are stacked with the interposed separators. The group includes current collecting tabs for these electrodes. Connecting portions of these tabs are arranged in different positions on an outer periphery of the group.
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公开(公告)号：US20160036090A1
公开(公告)日：2016-02-04
申请号：US14659804
申请日：2015-03-17
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Tetsuya SASAKAWA , Yoshiyuki Isozaki , Hidesato Saruwatari , Norio Takami
CPC classification number: H01M10/0525 , H01M2/1077 , H01M4/131 , H01M4/364 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/4257 , H01M2004/027 , H01M2004/028 , H01M2010/4271 , Y02E60/122 , Y02T10/7011
Abstract: According to one embodiment, a nonaqueous electrolyte battery includes a container, a positive electrode housed in the container, a negative electrode housed in the container, and a nonaqueous electrolyte housed in the container. The positive electrode includes a positive electrode active material represented by a general formula LiMO2 (M is one or more elements selected from a group consisting of Ni, Co, and Mn). The negative electrode is spatially separated from the positive electrode and includes a titanium-containing oxide as a negative electrode active material. A potential of the positive electrode is 3.75 V or more vs. Li/Li+, when an open circuit voltage of a nonaqueous electrolyte battery is 2.17 V.
Abstract translation: 根据一个实施方案，非水电解质电池包括容器，容纳在容器中的正极，容纳在容器中的负极和容纳在容器中的非水电解质。 正极包括由通式LiMO2表示的正极活性物质（M是选自Ni，Co和Mn中的一种以上的元素）。 负极与正极空间分离，含有含钛氧化物作为负极活性物质。 当非水电解质电池的开路电压为2.17V时，正极的电位相对于Li / Li +为3.75V以上。
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