# US 11,451,140 B2 · Power supply device and control method for power supply device

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- Number: US 11,451,140 B2
- Document ID: US11451140B2
- Status: Granted
- Kind: B2
- Application number: 17/234,274
- Filed: 2021-04-19
- Published: 2021-08-12
- Granted: 2022-09-20
- Earliest claimed: 2016-10-27
- Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho
- Applicants: Kabushiki Kaisha Toyota Chuo Kenkyusho
- Inventors: Shigeaki Goto; Keisuke Ishikawa; Shuji Tomura; Naoki Yanagizawa
- Web page: https://patentgrep.com/patent/US11451140B2

## CPC

- H01M 10/4207: {for several batteries or cells simultaneously or sequentially}
- H01M 10/42: Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells (H01M10/60 takes precedence)
- H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)}
- H02J 1/102: being switching converters (H02J1/108, H02J1/12 take precedence)
- H02J 7/54: Passive balancing, e.g. using resistors or parallel MOSFETs
- H02M 1/14: Arrangements for reducing ripples from DC input or output
- H02M 3/155: using semiconductor devices only
- H02M 7/4835: {comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage}
- H02M 7/49: Combination of the output voltage waveforms of a plurality of converters
- H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane
- H02J 2105/37: exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV]
- H02J 2207/20: Charging or discharging characterised by the power electronics converter
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P)

## Abstract

A power supply device includes a battery circuit module group in which a plurality of battery circuit modules are connected in series via their output terminals. The power supply device further includes a control circuit configured to: output, at intervals of a certain time, a gate signal for turning on and off a first switching element and a second switching element of each battery circuit module to the battery circuit modules in the battery circuit module group; and select one of the battery circuit modules that receives an input of the gate signal to output a predetermined voltage from the power supply device.

## Claims

### Claim 1

A power supply device comprising:
a battery circuit module group in which a plurality of battery circuit modules are connected in series via their output terminals, each battery circuit module including:
a battery;
its output terminal through which a voltage of the battery is to be output;
a first switching element connected to the output terminal and connected in parallel to the battery; and
a second switching element connected in series to the battery between the battery and the first switching element, the second switching element being configured to be turned off when the first switching element is turned on; and
a control circuit configured to:
output, at intervals of a certain time, a gate signal for turning on and off the first switching element and the second switching element of each battery circuit module to the battery circuit modules in the battery circuit module group; and
select one of the battery circuit modules that receives an input of the gate signal to output a predetermined voltage from the power supply device.