Title:
二次電池、電池パック及び電力システム
Document Type and Number:
Japanese Patent JP7157619
Kind Code:
B2
Abstract:
This secondary battery has a positive electrode and a negative electrode in which an electrode material is applied to a current collector, and a separator provided between the positive electrode and the negative electrode, wherein: tabs are attached to each of the current collectors in the positive electrode and the negative electrode; and, in the positive electrode and/or the negative electrode, the impedance in the vicinity of the tab is reduced so as to be less than the impedance in other regions. This makes it possible to adjust the distribution of impedance, including capacitance, in the electrodes of the secondary battery, and to reduce the impedance of the secondary battery in a high-frequency band.
More Like This:
Inventors:
Daiki Komatsu
Kenji Inoue
Shigeki Makino
Kenji Inoue
Shigeki Makino
Application Number:
JP2018195748A
Publication Date:
October 20, 2022
Filing Date:
October 17, 2018
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H01M10/04; H01M4/02; H01M4/70; H01M10/052; H01M10/0585; H01M50/211; H01M50/489; H01M50/50; H01M50/531; H01M50/55; H01M50/588; H01M50/593
Domestic Patent References:
| JP2009516352A | ||||
| JP2014059971A | ||||
| JP2005268029A | ||||
| JP2018156901A | ||||
| JP2004291891A |
Foreign References:
| WO2011125325A1 |
Attorney, Agent or Firm:
Polar Patent Attorney Corporation