Sealed bipolar multi-cell battery
A low maintenance battery comprises a sealed casing having a cavity receiving a stack of monopolar and bipolar plates interspersed with mats of fiberglass felt immobilizing electrolyte and forming a gas path for diffusion of oxygen to the negative electrode. The casing contains a single, resealable vent. During charging, oxygen generated at the positive plate diffuses through the mat and decomposes at the negative plate. The negative plate has a larger capacity than the positive plate to prevent evolution of hydrogen. Voltage potential is increased or decreased by placing one or more bipolar plates in series relation between alternating positive and negative monopolar plates that are connected in parallel to respective positive and negative battery terminals. The monoplates are connected in parallel to respective postive and negative battery terminals, by way of bus plates. The resealable vent permits operation by way of the oxygen cycle which prevents loss of electrolyte. The vent prevents invasion of oxygen from the ambient to discharge negative plates.
- Assignee:
- California Institute of Technology
- Patent Number(s):
- US 4539268
- OSTI ID:
- 5915338
- Country of Publication:
- United States
- Language:
- English
Similar Records
Wound bipolar lithium polymer batteries
Sealed lead acid battery
Related Subjects
250901* -- Energy Storage-- Batteries-- Design & Development
BATTERY CHARGING
CAPACITY
DESIGN
DIFFUSION
ELECTRIC BATTERIES
ELECTRIC CONTACTS
ELECTRIC POTENTIAL
ELECTRICAL EQUIPMENT
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTROLYTES
ELEMENTS
EQUIPMENT
FIBERGLASS
LEAD-ACID BATTERIES
NONMETALS
OXYGEN
PLATES
SEALS