Battery cell monitoring circuit and battery cell monitoring system
First Claim
1. A battery cell monitoring system, comprising:
- a plurality of battery cell monitoring circuits for monitoring battery cells connected in series; and
a microcomputer that outputs an address signal containing address information designating one or more of the battery cell monitoring circuits for generating a data signal and a clock signal;
wherein each battery cell monitoring circuit of the plurality comprises;
an address input terminal for input of the address signal;
an address output terminal for output of the address signal;
a clock input terminal for input of the clock signal;
a clock output terminal for output of the clock signal;
a data output circuit for output of a data signal corresponding to a battery cell monitoring result;
a data input terminal for input of the data signal from another battery monitoring circuit;
a data output terminal;
a multiplexer having an input terminal connected to the data input terminal and the data output circuit, wherein the multiplexer is configured to receive data signals through the data input terminal and from the data output circuit and to output the data signal received from the data output circuit when the battery cell monitoring circuit is the designated battery cell monitoring circuit and to output the data signal received through the data input terminal otherwise; and
a flip-flop circuit having a clock input terminal for receiving the clock signal and a data terminal for receiving the data signal from the multiplexer, wherein the flip-flop circuit latches the data signal from the multiplexer in synchronization with the clock signal, and the latched data signal is output to the data output terminal.
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Accused Products
Abstract
A battery cell monitoring system includes multiple battery monitoring circuits, each connected to a corresponding battery cell, and a microcomputer for controlling the monitoring circuits. The battery monitoring circuits include a data output circuit that outputs a data signal corresponding to the monitoring results for the battery cell monitored thereby and a multiplexer that outputs either the monitoring results received from the data output circuit or monitoring results received from another battery monitoring circuit. The battery cell monitoring circuit includes a flip-flop circuit receiving a clock signal and the signal output from the multiplexer which is latched in synchronization with the clock signal.
13 Citations
16 Claims
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1. A battery cell monitoring system, comprising:
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a plurality of battery cell monitoring circuits for monitoring battery cells connected in series; and a microcomputer that outputs an address signal containing address information designating one or more of the battery cell monitoring circuits for generating a data signal and a clock signal; wherein each battery cell monitoring circuit of the plurality comprises; an address input terminal for input of the address signal; an address output terminal for output of the address signal; a clock input terminal for input of the clock signal; a clock output terminal for output of the clock signal; a data output circuit for output of a data signal corresponding to a battery cell monitoring result; a data input terminal for input of the data signal from another battery monitoring circuit; a data output terminal; a multiplexer having an input terminal connected to the data input terminal and the data output circuit, wherein the multiplexer is configured to receive data signals through the data input terminal and from the data output circuit and to output the data signal received from the data output circuit when the battery cell monitoring circuit is the designated battery cell monitoring circuit and to output the data signal received through the data input terminal otherwise; and a flip-flop circuit having a clock input terminal for receiving the clock signal and a data terminal for receiving the data signal from the multiplexer, wherein the flip-flop circuit latches the data signal from the multiplexer in synchronization with the clock signal, and the latched data signal is output to the data output terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A monitoring circuit for a battery cell, comprising:
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an address input terminal for input of an address signal designating a selected battery cell monitoring circuit; an address output terminal for output of the address signal; a clock input terminal for input of a clock signal; a clock output terminal for output of the clock signal; a data output circuit configured to output a data signal corresponding to a monitoring result for the battery cell; a data input terminal for input of data signals from other battery cell monitoring circuits; a data output terminal; a multiplexer having an input terminal connected to the data input terminal and the data output circuit, wherein the multiplexer is configured receive data signals through the data input terminal and from the data output circuit and to output the data signal received from the data output circuit when the monitoring circuit is selected and to output the data signal received through the data input terminal otherwise; and a flip-flop circuit having a clock input terminal for receiving the clock signal and a data terminal for receiving the data signal from the multiplexer, wherein the flip-flop circuit latches the data signal from the multiplexer in synchronization with the clock signal, and the latched data signal is output to the data output terminal. - View Dependent Claims (13, 14, 15, 16)
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Specification