Halogen hydrate storage device for mobile zinc-chloride battery systems

In a metal halogen battery system, including at least one cell having a positive electrode and a negative electrode contacted by aqueous electrolyte containing the material of said metal and halogen, sump means for the electrolyte, store means whereby halogen hydrate is formed and stored as part of an aqueous material, means for circulating electrolyte through the cell and to the store means, and conduit means for transmitting halogen gas formed in the cell to a hydrate former whereby the hydrate is formed in association with the store means,

• the improvement comprising,
• said store means being constructed in the form of a container which includes a generally unitary filter means extending around most of the inside surface of the container and with the filter means being spaced a predetermined distance away from said surface to form spacing between the filter means and said inside surface,
• said filter means being operative to separate the hydrate formed from the liquid electrolyte,
• a hydrate former-gas pump means associated with the store means and being operative to intermix halogen gas from the cell with aqueous electrolyte,
• a gas space means being maintained at the top of the store means with the hydrate former-pump means exhausting into the gas space, said gas space means being operative to minimize transfer of liquid from the store to the cell,
• exit conduit means generally adjacent the top of the store means for transmitting fluid containing halogen gas to the cell,
• second exit conduit means generally adjacent the bottom of the store means for recirculating filtered electrolyte to the battery system.

In a metal halogen battery system, including at least one cell, electrolyte, store means whereby halogen hydrate is formed and stored, means for circulating electrolyte through the cell and to the store means, and conduit means for transmitting halogen gas to a hydrate former,

• the improvement comprising,
• said store means being constructed in the form of a container which includes a filter means extending around most of the inside of the container,
• said filter means being operative to separate the hydrate formed from the electrolyte,
• a hydrate former means associated with the store means and being operative to intermix halogen gas from the cell with electrolyte from the store means and from the cell,
• a gas space means being maintained at the top of the store means with the hydrate former exhausting into the proximity of the gas space, said gas space means being operative to minimize transfer of liquid from the store to the cell,
• exit conduit means near the top of the store means for transmitting gas-fluid to the cell,
• second exit conduit means near the bottom of the store means for circulating filtered electrolyte to the battery system.