BIPOLAR BATTERY ASSEMBLY

摘要

The invention relates to an article comprising; a) one or more stacks of battery plates comprising one or more bipolar plates; b) located between each plate is a separator and a liquid electrolyte; further comprising one of more of the features: 1) c) the one or more stacks of battery plates having a plurality of channels passing transversely though the portion of the plates having the cathode and/or the anode deposited thereon; and d) i) one or more seals about the periphery of the channels which prevent the leakage of the liquid electrolyte into the channels, and/or posts located in one or more of the channels having on each end an overlapping portion that covers the channel and sealing surface on the outside of the monopolar plates adjacent to the holes for the transverse channels and applies pressure on the sealing surface of the monopolar plates.

主权项

1. An article comprising:
a) one or more stacks of battery plates comprising one or more bipolar plates comprising a substrate having an anode on one surface and a cathode on the opposite surface, a monopolar plate having a cathode deposited on one surface and a monopolar plate having an anode deposited on one surface, wherein the plates are arranged such that the surfaces of the plates having a cathode deposited on the surface face the surface of another plate having an anode deposited on the surface, and the monopolar plates are located at opposite ends of each stack of battery plates; b) located between each plate is a separator and a liquid electrolyte;
c) the one or more stacks of battery plates having a plurality of channels passing transversely though the portion of the plates having the cathode and/or the anode deposited thereon; andd) i) one or more seals about the periphery of the channels which prevent the leakage of the liquid electrolyte into the channels, and posts located in one or more of the channels having on each end an overlapping portion that covers the channel and a sealing surface on the outside of the monopolar plates adjacent to the holes for the transverse channels and applies pressure on the sealing surfaces of the monopolar plates wherein the pressure is sufficient to withstand pressures created during assembly and operation of electrochemical cells created by the stacks of battery plates, or ii) posts located in one or more channels having on each end a portion that covers the channel and a sealing surface on the outside of the monopolar plates adjacent to the holes for the transverse channels and applies pressure on the sealing surfaces of the monopolar plates wherein the pressure is sufficient to withstand pressures created during assembly and operation of electrochemical cells created by the stacks of battery plates wherein the posts are fabricated from a material that is capable of withstanding exposure to the electrolyte and prevents the electrolyte from entering the channels.