Title:
二次電池システム
Document Type and Number:
Japanese Patent JP7221193
Kind Code:
B2
Abstract:
To solve the problem of the occurrence of false detection in a conventional secondary battery system.SOLUTION: A secondary battery system comprises: a positive electrode-side power wire W2 to be connected to a positive electrode terminal of a load circuit of a vehicle; a precharge circuit including a precharge resistance R1 connected in series between a driving battery 10 and the positive electrode-side power wire W2, and a first relay switch SW1; a third relay switch SW3 provided in parallel with the precharge circuit and having one end connected to a negative electrode terminal of the driving battery 10 through a negative electrode-side battery wire W3; and an abnormality detecting circuit 13 for detecting a voltage difference between the negative electrode-side battery wire W3 and the positive electrode-side power wire W2 as a detection voltage Vs, and detecting an abnormality of the first relay switch SW1 to the third relay switch SW3 on the detection voltage Vs.SELECTED DRAWING: Figure 1
Inventors:
Yusuke Kozuka
Yoshihiro Oto
Yoshihiro Oto
Application Number:
JP2019194413A
Publication Date:
February 13, 2023
Filing Date:
October 25, 2019
Export Citation:
Assignee:
Prime Earth ev Energy Co., Ltd.
International Classes:
H02J7/00; B60L3/00; B60L50/60; G01R31/50
Domestic Patent References:
| JP2011083151A | ||||
| JP2018128433A | ||||
| JP2007165253A | ||||
| JP2016090366A | ||||
| JP2013219955A |
Foreign References:
| WO2018047752A1 |
Attorney, Agent or Firm:
Ken Ieiri