公开(公告)号：US20180321326A1

公开(公告)日：2018-11-08

申请号：US15739566

申请日：2016-06-24

Applicant: Japan Aerospace Exploration Agency

Inventor： Kohei TANAKA ,  Yoshitsugu SONE ,  Seisuke FUKUDA ,  Masayuki ITAGAKI

IPC: G01R31/36 ,  H01M10/42

Abstract: It is intended to recognize the state of charge or depth of discharge of the battery more accurately than conventional technologies and to recognize health of a battery appropriately. Complex impedance between positive and negative electrodes of the battery is determined at a plurality of frequencies, and the state of charge or depth of discharge of the battery is estimated by comparing frequency dependency of Warburg impedance of the determined complex impedances with frequency dependency of Warburg impedance corresponding to a known state of charge or depth of discharge of the battery. Similarly, complex impedance is determined, and the health of the battery is evaluated by using the real part of the complex impedance at a point where the imaginary part of the complex impedance is zero on a line obtained by extending a part, which indicates frequency dependency of Warburg impedance, of a complex impedance characteristic curve representing a correlation relationship between the real and imaginary parts of the determined complex impedance.

公开(公告)号：US20140093795A1

公开(公告)日：2014-04-03

申请号：US14042610

申请日：2013-09-30

Applicant: Japan Aerospace Exploration Agency

Inventor： Yoshitsugu SONE

IPC: H01M8/18

CPC classification number: H01M8/186 ,  H01M8/04156 ,  H01M16/00 ,  H01M16/003 ,  Y02E60/366 ,  Y02E60/528

Abstract: The reservoirs 2 and 2′ preliminarily contain liquid water, which is utilized as the water to be supplied to the polymer membrane. A vapor pressure of the water is set to a predetermined value in the reservoir by controlling the temperature of the reservoirs 2 and 2′ individually. Pressure gauges 6 and 6′ may be used for setting a vapor pressure of the water. The water which is gasified based on the set vapor pressure in the respective reservoir is supplied to the stack 10 along with oxygen from the reservoir 2, and with hydrogen from the reservoir 2′. This configuration makes it possible to adjust the amount of water contained in the polymer membrane and maintain the moisturization of the polymer membrane without external water supply.

Abstract translation: 储存器2和2'预先含有液体水，其被用作供应到聚合物膜的水。 通过分别控制储存器2和2'的温度，将水的蒸汽压力设置在储存器中的预定值。 压力计6和6'可用于设定水的蒸气压。 基于相应储存器中设定的蒸汽压力气化的水与来自储存器2的氧气以及来自储存器2'的氢气一起被供应到堆叠10。 这种结构使得可以调节聚合物膜中所含的水的量并且保持聚合物膜的保湿而无需外部供水。