Secondary battery system

Patent metadata

Field	Value
Publication number	US-10090511-B2
Application number	US-201715611205-A
Country	US
Kind code	B2
Filing date	Jun 1, 2017
Priority date	Jun 3, 2016
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

An object of the present disclosure is to provide a secondary battery system that functions at high voltage. The present disclosure attains the object by providing a secondary battery system comprising: a fluoride ion battery including a cathode active material layer, an anode active material layer, and an electrolyte layer formed between the cathode active material layer and the anode active material layer; and a controlling portion that controls charging and discharging of the fluoride ion battery; wherein the cathode active material layer contains a cathode active material with a crystal phase that has a Perovskite layered structure and is represented by A n+1 B n O 3n+1-α F x (A comprises at least one of an alkali earth metal element and a rare earth element; B comprises at least one of Mn, Co, Ti, Cr, Fe, Cu, Zn, V, Ni, Zr, Nb, Mo, Ru, Pd, W, Re, Bi, and Sb; “n” is 1 or 2; “α” satisfies 0≤α≤3.5; and “x” satisfies 0≤x≤5.5); and the controlling portion controls charging so that a value of F/B in the cathode active material becomes more than 2/n that is in an over-charged state.

First claim

What is claimed is:

1. A secondary battery system comprising:
a fluoride ion battery including a cathode active material layer, an anode active material layer, and an electrolyte layer formed between the cathode active material layer and the anode active material layer, and
a controlling portion that controls charging and discharging of the fluoride ion battery, wherein
the cathode active material layer contains a cathode active material with a crystal phase that has a Perovskite layered structure and is represented by A n+1 B n O 3n+1-α F x (A comprises at least one of an alkali earth metal element and a rare earth element; B comprises at least one of Mn, Co, Ti, Cr, Fe, Cu, Zn, V, Ni, Zr, Nb, Mo, Ru, Pd, W, Re, Bi, and Sb; “n” is 1 or 2; “α” satisfies 0≤α≤3.5; and “x” satisfies 0≤x≤5.5), and
the controlling portion controls charging so that a value of F/B in the cathode active material becomes more than 2/n that is in an over-charged state.

2. The secondary battery system according to claim 1 , wherein the controlling portion controls discharging so that a value of F/B in the cathode active material becomes less than 2/n.

3. The secondary battery system according to claim 1 , wherein the A comprises at least one of Ca, Sr, Ba, Sc, Y, La, Ce, Pr, Nd, Sm, and Gd.

Assignees

• Toyota Motor Co Ltd
• Univ Kyoto

Inventors

• Miki Hidenori
• Ogumi Zempachi
• Uchimoto Yoshiharu

Classifications

• H01M10/448

  End of discharge regulating measures · CPC title

• H01M10/446

  Initial charging measures · CPC title

• H01M4/582

  Halogenides · CPC title

• H01M4/483 Primary

  for non-aqueous cells (H01M4/485 takes precedence) · CPC title

• H01M10/05 Primary

  Accumulators with non-aqueous electrolyte (H01M10/39 takes precedence) · CPC title