H - Electricity – 01 – M
Patent
H - Electricity
01
M
319/109
H01M 10/02 (2006.01) H01M 2/18 (2006.01) H01M 10/04 (2006.01)
Patent
CA 1044316
Abstract Of The Disclosure A maintenance free storage battery has a plurality of alternately positive and negative plates disposed within an electrolyte in a battery container, with the plates resting on the bottom of the container. A battery separator material is disposed between each pair of adjacent plates with the bottom of the separator material forming openings to permit access of a bonding material to the lower edges of the plates. A bonding material adhered to both the bottom wall of the battery container and the lower edges of the plates extends through the bottom openings formed by the separator material to provide vibration resistance, with the bonding material also sealing the bottom openings to prevent the treeing of active material between positive and negative plates at the bottom of the container. In one embodiment the separator material is in the form of envelopes around alternate plates with each envelope being sealed along the vertical edges of the plate and having slots along the lower edge of the plate to form the bottom openings to permit access of the bonding material to the lower portions of the plates inside the envelopes. As an alternative, the separator material may be in the form of open-bottomed sleeves. The vertical edges of either the sleeves or the envelopes may be formed by strips of heat shrinkable plastic film so that the separator material can be fit snugly against the plates contained therein. In another embodiment, the separator material is in the form of a single strip of flexible material woven back and forth between successive pairs of adjacent plates so that the strip is folded around one vertical edge of each positive plate on one side of the group of plates and around one vertical edge -1- of each negative plate on the other side of the group of plates; the bottom edge of the woven strip leaves the bottom edge of each plate completely open for access to the bonding material. When the plates and separators are first inserted into the battery container, the bonding material is in a liquid state so that the lower edges of the plates and the separators are submerged in the liquid which flows through the openings and into contact with the plates. The bonding material is then solidified to seal the openings. -1a-
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