# US 10,770,907 B2 · Battery device and control method thereof

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- Number: US 10,770,907 B2
- Document ID: US10770907B2
- Status: Granted
- Kind: B2
- Application number: 15/890,760
- Filed: 2018-02-07
- Published: 2018-08-23
- Granted: 2020-09-08
- Earliest claimed: 2017-02-23
- Assignees: Kabushiki Kaisha Toshiba; Toshiba Infrastructure Systems & Solutions Corporation
- Applicants: Kabushiki Kaisha Toshiba; Toshiba Infrastructure Systems & Solutions Corporation
- Inventors: Shinji Okamoto; Fumio Shibasaki; Kazuo Shimizu; Takeshi Oosawa
- Web page: https://patentgrep.com/patent/US10770907B2

## CPC

- H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)}
- G01R 31/3842: combining voltage and current measurements
- G06F 13/16: for access to memory bus (G06F13/28 takes precedence)
- H01M 10/052: Li-accumulators
- H01M 2010/4278: {Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller}
- H02J 2207/10: Control circuit supply, e.g. means for supplying power to the control circuit
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A battery device includes battery module, each including an assembled battery and a battery monitoring circuit. The assembled battery comprises battery cells. The battery monitoring circuit measures voltages of the battery cells, current and temperature levels of the assembled battery. A control circuit is connected to the battery monitoring circuits through a communication line and supplies power to the battery monitoring circuits. The control circuit communicates with the battery monitoring circuits through the communication line. Each battery monitoring circuit is configured to monitor signals transmitted on the communication line for a predetermined time period after its startup, and then to select a communication ID to one that does not conflict with any other ID used to communicate through the communication line during the predetermined time period. The selected ID is then transmitted on the communication line.

## Claims

### Claim 1

A battery device, comprising:
a first battery module including a first battery monitoring circuit and a first assembled battery, the first battery monitoring circuit configured to measure current, voltage, and temperature in the first battery module;
a second battery module including a second battery monitoring circuit and a second assembled battery, the second battery monitoring circuit configured to measure current, voltage, and temperature in the second battery module, the first and second assembled battery being electrically connected to each other in series between a positive load terminal and negative load terminal; and
a control circuit connected to the first and second battery modules by a communication line and configured to receive information from the first and second battery monitoring circuits via the communication line, wherein
the first battery monitoring circuit is configured to monitor signals transmitted on the communication line for a predetermined time period after a startup of the first battery monitoring circuit and to detect communication IDs presently being used by another battery module for communications to the control circuit through the communication line during the predetermined period of time and then select a communication ID for transmissions of information to the control circuit that does not conflict with any detected communication ID, and then send the selected ID to the control circuit via the communication line.

### Claim 2 (depends on 1)

The battery device according to claim 1, wherein the second battery monitoring circuit is configured to monitor communications occurring on the communication line for a predetermined period of time after a startup of the second battery monitoring circuit and to detect communication IDs presently being used for communications on the communication line during the predetermined period of time and then select a communication ID for transmissions of information to the control circuit that does not conflict with any communication ID used during the predetermined period of time and then send the selected ID to the communication line.

### Claim 3

A control method of a battery device including a control circuit connected to a plurality of battery monitoring circuits via a communication line, the method comprising:
starting a first battery monitoring circuit upon being supplied with power by a control circuit;
with the first battery monitoring circuit, monitoring communication signals transmitted through a communication line for a predetermined period after starting of the first battery monitoring circuit to detect communication IDs presently being used by another battery monitoring circuit for communications to the control circuit through the communication line during the predetermined period;
with the first battery monitoring circuit, selecting a communication ID that does not conflict with any detected communication ID; and
transmitting information from the first battery monitoring circuit to the control circuit through the communication line using the selected communication ID.

### Claim 4 (depends on 3)

The control method according to claim 3, further comprising:
notifying the control circuit of the selection of the communication ID via the communication line.

### Claim 5 (depends on 3)

The control method according to claim 3, wherein the first battery monitoring circuit includes a non-volatile memory storage in which a previously selected communication ID is stored before startup, and the first battery monitoring circuit preferentially selects the previously selected communication ID stored in the non-volatile memory when it does not conflict with any of the detected communication IDs.