Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1997-04-08
1998-04-07
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 2, 320 5, H02J 704, H02J 700
Patent
active
057368368
ABSTRACT:
A battery discharge gas control system, which releases a hydrogen gas generated from the battery assembly when the battery assembly is charged and discharged, is capable of keeping the battery structure highly resistant to water or humidity. The battery discharge gas control system has a battery having a gas release port, a passage connected to the gas release port, a control valve connected to the passage, a pressure sensor for detecting a pressure in the passage, and a control circuit for opening the control valve to release a gas generated by the battery from the passage, depending on the pressure in the passage as detected by the pressure sensor. During a period of time in which no hydrogen gas is generated or a generated hydrogen gas is not plenty enough to be released while the battery is being charged or discharged, the passage is closed for thereby keeping the battery structure highly resistant to water or humidity. The control valve has a solenoid-operated valve openable in response to a control signal outputted by the control circuit, and a relief valve mechanically openable depending on the pressure in the passage. Even in the event of a failure of the solenoid-operated valve, the relief valve is mechanically opened depending on the pressure in the passage, thereby protecting the passage from damage.
REFERENCES:
patent: 3906330 (1975-09-01), Salamon et al.
patent: 4782279 (1988-11-01), Selanger
patent: 5488285 (1996-01-01), Hosobuchi
patent: 5650711 (1997-07-01), Kang
Hasegawa Osamu
Horie Tatsurou
Nakamura Yuichi
Sando Yasuyuki
Sato Hiromitsu
Honda Giken Kogyo Kabushiki Kaisha
Shin K.
Wong Peter S.
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