Battery monitoring and control integrated circuit and battery system

• US 9,853,463 B2
• Filed: 04/29/2016
• Issued: 12/26/2017
• Est. Priority Date: 12/20/2011
• Status: Active Grant

• Current Assignee: Hitachi Astemo Ltd. (Hitachi, Ltd.)
• Original Assignee: Hitachi Automotive Systems Limited (Hitachi, Ltd.)
• Inventors: Kudo, Akihiko, Kikuchi, Mutsumi, Emori, Akihiko, Machida, Akihiro
• Primary Examiner(s): Memula, Suresh
• Application Number:
  US15/142,326
• Publication Number:
  US 20160241056A1
• Time in Patent Office: 606 Days
• Field of Search: 320116
• CPC Class Codes: H02J 7/0014 Circuits for equalisation of charge between batteries
• CPC Class Codes: H02J 7/0016 using shunting, discharge or bypass circuits
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A battery monitoring and control integrated circuit is connected to a cell group having a plurality of series-connected single cells for monitoring and controlling the single cells, and includes: a first start input terminal for connecting to a DC signal generation circuit which generates a DC signal based on an AC start signal input from the outside; a start detection unit which detects the DC signal and activates the battery monitoring and control integrated circuit; and a start output unit which outputs the AC start signal to the outside after the activation of the battery monitoring and control integrated circuit.

Claims

1. A battery monitoring and control integrated circuit which is connected to a cell group having a plurality of series-connected single cells, and which monitors and controls the single cells, the battery monitoring and control integrated circuit comprising:

a signal input terminal for inputting an AC signal;

a DC signal generation circuit which generates a DC signal based on the AC signal; and

a start detection unit which detects the DC signal and activates the battery monitoring and control integrated circuit;

whereby the DC signal is for activating the battery monitoring and control integrated circuit.

2. The battery monitoring and control integrated circuit according to claim 1, wherein the DC signal generation circuit is a doubler rectifier circuit.

3. The battery monitoring and control integrated circuit according to claim 2, wherein the doubler rectifier circuit includes a rectifying element built in the battery monitoring and control integrated circuit.

4. The battery monitoring and control integrated circuit according to claim 1, further comprising a second input terminal for inputting a second DC signal, wherein the second DC signal is input into the start detection unit not via the DC signal generation circuit.