公开(公告)号：US20230027057A1

公开(公告)日：2023-01-26

申请号：US17858566

申请日：2022-07-06

Applicant: TDK CORPORATION

Inventor： Kumiko YAMAZAKI ,  Shuto KANO ,  Yuji UMEDA ,  Hiroki KITAMURA ,  Takeshi SHIBAHARA ,  Junichi YAMAZAKI

IPC: H01G4/33 ,  H01G4/20

Abstract: An amorphous dielectric includes a compound represented by A1+αBOxNy. −0.3≤α≤0.3, 0

公开(公告)号：US20200067145A1

公开(公告)日：2020-02-27

申请号：US16604193

申请日：2018-11-20

Applicant: TDK CORPORATION

Inventor： Masayuki YAMASHIMA ,  Mikio TSURUOKA ,  Hiroki KITAMURA

IPC: H01M10/42 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/46 ,  H01M10/44 ,  H02J7/00

Abstract: A battery pack which includes: a battery cell which contains a non-aqueous electrolyte, wherein the battery cell is a non-aqueous electrolyte secondary battery; a casing which stores the battery cell; and at least one liquid leakage sensor which detects liquid leakage from the battery cell, wherein the casing and/or the battery cell have a leaked liquid retention region in which the non-aqueous electrolyte tends to be retained when the non-aqueous electrolyte leaks out of the battery cell, wherein the liquid leakage sensor outputs measurement information as a detection result without using a charging/discharging circuit which charges and discharges the battery cell, and wherein at least one sensor unit of the liquid leakage sensor is provided in the leaked liquid retention region.

公开(公告)号：US20150093633A1

公开(公告)日：2015-04-02

申请号：US14502314

申请日：2014-09-30

Applicant: TDK CORPORATION

Inventor： Hiroyuki MIYABARA ,  Hiroki KITAMURA ,  Yukiko HIRABAYASHI ,  Masaki SOBU ,  Tetsuo TAKAISHI

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/62

CPC classification number: H01M4/366 ,  H01M4/131 ,  H01M4/525 ,  H01M4/625 ,  H01M10/0525 ,  Y02E60/122

Abstract: A lithium ion secondary battery with a high electrode density and an excellent rate discharge characteristic. The positive electrode includes a positive electrode active material of a compound represented by Lia(NixCoyAl1−x−y)O2 (0.95:≦a≦1.05, 0.5≦x≦0.9, 0.05≦y≦0.2), and carbon adhered to the surface of the material, in the Raman spectrum using a laser of 532 nm, the positive electrode includes a peak PA (D band) at 1200˜1450 cm−1, a peak PB (G band) at 1450˜1700 cm−1 and a peak PC at 400˜600 cm−1, and when the intensities are normalized by regarding the maximum intensity as 1 and the minimum intensity as 0 in the wavenumber domain of 200˜1800 cm−1, Raman intensity of the minimum (V band) between the two peaks of said peak PA and said peak PB is 0.6 or less, and Raman intensity of said peak PC is 0.1 or more and 0.5 or less.

Abstract translation: 具有高电极密度和优异的放电特性的锂离子二次电池。 该正极包括由LiI（NixCoyAl1-x-y）O 2（0.95：＆amp; NlE; a＆nlE; 1.05,0.5＆amp; nlE; x＆nlE; 0.9,0.05＆amp; nlE; y＆nlE; 0.2）表示的化合物的正极活性物质， 在使用532nm的激光的拉曼光谱中，在1200〜1450cm -1的峰值PA（D带），1450〜1700cm -1的峰值PB（G带） 1和400〜600cm -1的峰值PC，并且当在200〜1800cm -1的波数域中通过将最大强度为1和最小强度为0来对强度进行归一化时，最小的拉曼强度（ V波段）在所述峰值PA和所述峰值PB之间的两个峰值之间为0.6以下，所述峰值PC的拉曼强度为0.1以上且0.5以下。