Harry K Bjorkman

US Patent:

43861407, May 31, 1983

Filed:

Apr 16, 1982

Appl. No.:

6/368892

Inventors:

Harry K. Bjorkman - Birmingham MI

Assignee:

Energy Development Associates, Inc. - Madison Heights MI

International Classification:

H01M 806

US Classification:

429 19

Abstract:

An improved hydrate store for a metal halogen battery system is disclosed which employs a multiple stage, multiple filter means or separating the halogen hydrate from the liquid used in forming the hydrate. The filter means is constructed in the form of three separate sections which combine to substantially cover the interior surface of the store container. Exit conduit means is provided in association with the filter means for transmitting liquid passing through the filter means to a hydrate former subsystem. The hydrate former subsystem combines the halogen gas generated during the charging of the battery system with the liquid to form the hydrate in association with the store. Relief valve means is interposed in the exit conduit means for controlling the operation of the separate sections of the filter means, such that the liquid flow through the exit conduit means from each of the separate sections is controlled in a predetermined sequence. The three separate sections of the filter means operate in three discrete stages to provide a substantially uniform liquid flow to the hydrate former subsystem during the charging of the battery system. The separation of the liquid from the hydrate causes an increase in the density of the hydrate by concentrating the hydrate along the filter means.

US Patent:

42565545, Mar 17, 1981

Filed:

Mar 28, 1980

Appl. No.:

6/134929

Inventors:

Harry K. Bjorkman - Birmingham MI

Assignee:

Energy Development Associates, Inc. - Madison Heights MI

International Classification:

C25B 126
C25B 900

US Classification:

204128

Abstract:

An electrolytic cell for separating chlorine gas from other (foreign) gases, having an anode electrode, a cathode electrode, a gas impermeable (but liquid permeable) membrane interposed between the anode and cathode electrodes, an aqueous electrolyte, a housing, and a constant voltage power supply. The electrolytic cell may be constructed in either a rectangular or cylindrical geometry, and may be combined with other electrolytic cells to form a multiple cell system. In operation, a stream of chlorine and foreign gases enters the cell at the lower portion of the cathode electrode. The chlorine gas is dissolved into the electrolytic and electrochemically reduced into chloride ions. The chloride ions diffuse through the gas impermeable membrane, and are electrochemically oxidized at the anode into purified chlorine gas. The foreign gases do not participate in the above, and are vented from the cell.

US Patent:

43894682, Jun 21, 1983

Filed:

Mar 16, 1982

Appl. No.:

6/358628

Inventors:

Harry K. Bjorkman - Birmingham MI

Assignee:

Energy Development Associates, Inc. - Madison Heights MI

International Classification:

H01M 240

US Classification:

429 70

Abstract:

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, 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, said store means being constructed in the form of a container which includes a filter means, said filter means being inoperative to separate the hydrate formed from the electrolyte, said system having, a hydrate former pump means associated with the store means and being operative to intermix halogen gas with aqueous electrolyte to form halogen hydrate, said hydrate former means including, multiple outlet nozzle means connected with the outlet side of said pump means and being operative to minimize plugging, said nozzle means being comprised of at least one divider means which is generally perpendicular to the rotational axes of gears within the pump means, said divider means acting to divide the flow from the pump means into multiple outlet flow paths.

US Patent:

39935027, Nov 23, 1976

Filed:

Oct 29, 1975

Appl. No.:

5/626793

Inventors:

Harry K. Bjorkman - Birmingham MI

Assignee:

Energy Development Associates - Madison Heights MI

International Classification:

H01M 4700

US Classification:

429 51

Abstract:

A metal-halogen-hydrate electrical energy system having two fluid flow loops operating in parallel driven from the same pump.