IP Library Granted Patent US 7,471,065
Granted Patent B2
US 7,471,065 · App. 11/117,487 · Granted Dec 30, 2008

Multi-series battery control system

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Quick Facts
Patent No.
US 7,471,065
App. No.
11/117,487
Granted
Dec 30, 2008
Kind
B2
Abstract

A multi-series battery control system comprises a unit battery cell of which unit consists of multiple battery cells, control IC comprising a control IC chip containing a control circuit for controlling the unit battery cell and a cell monitor IC chip for monitoring the voltage of the unit battery cell, and main controller that sends and receives signal to/from the control IC via insulation of which cell monitor IC chip and control IC chip are paired to control the unit battery cell.

Claims (16)

1. A multi-series battery control system comprising a plurality of unit battery cells, each unit battery cell of which unit consists of multiple battery cells, a control IC arrangement including a control IC chip containing a control circuit for controlling the unit battery cell and a cell monitor IC chip for monitoring the voltage of the unit battery cell, wherein the control IC arrangement includes a plurality of voltage input terminals configured to receive respective terminal voltages of respective battery cells of the unit battery cell, a voltage detection circuit which detects a terminal voltage of a selected voltage input terminal, first input and output terminals to send or receive a command and/or terminal voltages detected by the voltage detection circuit, second input and output terminals to send or receive a normal/abnormal-signal for indicating a normality/abnormality, wherein the control IC arrangement is configured such that the second output terminal sends an abnormal-signal indicating an abnormality when the second input terminal receives an abnormal-signal,

the multi-series battery control system further including a main controller that sends and receives signal to/from the control IC arrangement via insulation communication components;

where the control IC arrangement controls the unit battery cell;

a plurality of control IC chips and a plurality of cell monitor IC chips, configured in pairs together, with each pair having one control IC chip and one cell monitor IC chip to control a mutually-different common unit battery cell of the plurality of unit battery cells in a ranking from highest to lowest,

wherein a highest-ranking cell monitor IC chip is woken up by a first signal outputted from the main controller via the insulation communication components, and then each lower-ranking cell monitor IC chip is woken up one after another by the first signal relayed from a neighboring higher-ranking cell monitor IC chip to the lower-ranking cell monitor IC chip, and

a highest-ranking control IC chip is woken up by a second signal outputted from the main controller via the insulation communication components, and then each lower-ranking control IC chip is woken up one after another by the second signal relayed from a neighboring higher-ranking control IC chip to the lower-ranking control IC chip.

2. A multi-series battery control system comprising:

a plurality of unit battery cells, each unit battery cell of which unit consists of multiple battery cells, a control IC arrangement including a control IC chip containing a control circuit for controlling the unit battery cell and a cell monitor IC chip for monitoring the voltage of the unit battery cell, wherein the control IC arrangement includes a plurality of voltage input terminals configured to receive respective terminal voltages of respective battery cells of the unit battery cell, a voltage detection circuit which detects a terminal voltage of a selected voltage input terminal, first input and output terminals to send or receive a command and/or terminal voltages detected by the voltage detection circuit, second input and output terminals to send or receive a normal/abnormal-signal for indicating a normality/abnormality, wherein the control IC arrangement is configured such that the second output terminal sends an abnormal-signal for indicating an abnormality when the second input terminal receives an abnormal-signal,

the multi-series battery control system further including a main controller that sends and receives signal to/from the control IC arrangement via insulation communication components;

where the control IC arrangement controls the unit battery cell;

a plurality of control IC chips and a plurality of cell monitor IC chips, configured in pairs together, with each pair having one control IC chip and one cell monitor IC chip to control a mutually-different common unit battery cell of the plurality of unit battery cells in a ranking from highest to lowest,

wherein a highest-ranking cell monitor IC chip is woken up by a first signal outputted from the main controller via the insulation communication components, and then each lower-ranking cell monitor IC chip is woken up one after another by the first signal relayed from a neighboring higher-ranking cell monitor IC chip to the lower-ranking cell monitor IC chip, and

a highest-ranking control IC chip is woken up by a second signal outputted from the main controller via the insulation communication components, and then each lower-ranking control IC chip is woken up one after another by the second signal relayed from a neighboring higher-ranking control IC chip to the lower-ranking control IC chip;

wherein the highest-ranking cell monitor IC chip is woken up by the first signal outputted from the main controller and, after the highest-ranking cell monitor IC chip has been woken up, each lower-ranking cell monitor IC chip is woken up one after another by the first signal relayed from a neighboring higher-ranking cell monitor IC chip to the lower-ranking cell monitor IC chip, until a lowest-ranking cell monitor IC chip is woken up;

a power supplied from the unit battery cell connected with the highest-ranking cell monitor IC chip is supplied to the insulation communication components so that the insulation communication components become conductive; and

the highest-ranking control IC chip is woken up by the second signal outputted from a main controller and, after the highest-ranking control IC chip has been woken up, each lower-ranking control IC chip is woken up one after another by the second signal relayed from a neighboring higher-ranking control IC chip to the lower-ranking control IC chip, until a lowest-ranking control IC chip is woken up.

Assignments (3)
CHANGE OF NAME Recorded Mar 25, 2021
From: HITACHI AUTOMOTIVE SYSTEMS, LTD.
To: HITACHI ASTEMO, LTD.
Reel/Frame 056299/0447 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 19, 2019
From: SHIN-KOBE ELECTRIC MACHINERY CO. LTD.
To: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Reel/Frame 051327/0524 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 29, 2005
From: EMORI, AKIHIKO; YOSHIHARA, SHIGEYUKI; SASAZAWA, KAZUYOSHI; HORIBA, TATSUO; KUDO, AKIHIKO
To: SHIN-KOBE ELECTRIC MACHINERY CO., LTD.
Reel/Frame 016524/0431 →