Vehicular lead storage battery and vehicle equipped therewith

Abstract

A vehicular lead storage battery according to the present invention includes a battery container provided with at least one cell chamber; and a cover plate 1 for covering an upper opening of the battery container. A guide path 8 for discharging gases within a cell chamber to the outside is formed in the cover plate 1. The guide path 8 includes a first guide portion 9 B for horizontally guiding gases from the cell chamber; a second guide portion 9 C connected to the first guide portion 9 B to downwardly guide the gases from the first guide portion 9 B; and a third guide portion 10 A connected to the second guide portion 9 C to horizontally guide the gases from the second guide portion 9 C and discharge the gases from an exhaust vent 4 K formed in the cover plate 1 to the outside. A corner portion 9 K is formed by the first guide portion 9 B and the second guide portion 9 C, and a corner portion 10 K is formed by the second guide portion 9 C and the third guide portion 10 A. The guide path 8 is formed so that the angle θ of a straight line L having internal contact with the two corner portions 9 K and 10 K from a horizontal line is greater than the maximum angle of inclination at which the inclined angle of a vehicle is maximum during driving on a sloping ground.

1 . A vehicular lead storage battery comprising:
 a battery container in which an upper opening is formed and which is provided with at least one cell chamber; and   a cover plate in which an exhaust vent is formed and which covers the upper opening of the battery container,   wherein a guide path for discharging gases inside the cell chamber to the outside is formed in the cover plate, the guide path including:   a first guide portion for horizontally guiding gases from the cell chamber;   a second guide portion connected to the first guide portion to downwardly guide the gases from the first guide portion; and   a third guide portion connected to the second guide portion to horizontally guide the gases from the second guide portion and discharge the gases from an exhaust vent to the outside,   a corner portion is formed by the first guide portion and the second guide portion,   another corner portion is formed by the second guide portion and the third guide portion, and   the guide path is formed so that the angle of a straight line having internal contact with the two corner portions from a horizontal line is greater than the maximum angle of inclination at which the inclined angle of a vehicle is maximum during driving on a sloping ground.   
     
     
         2 . The vehicular lead storage battery according to  claim 1 , wherein the third guide portion is formed so that a bottom wall constituting the third guide portion is present on an extended line of the straight line extending toward the third guide portion side. 
     
     
         3 . The vehicular lead storage battery according to  claim 1 , wherein the upper limit of the angle of the straight line from the horizontal line is set so as to be less than 90°. 
     
     
         4 . The vehicular lead storage battery according to  claim 1 , wherein the battery container includes a plurality of cell chambers, and the cover plate includes:
 exhaust openings for respectively discharging gases from the plurality of cell chambers;   a space for collecting the gases discharged from the plurality of exhaust openings in a specific cell chamber; and   a second exhaust opening for capturing the gases collected in the specific cell chamber into the guide path.   
     
     
         5 . The vehicular lead storage battery according to  claim 1 , wherein the cover plate is formed into a rectangular shape in plan view having long sides and short sides, and the first guide portion includes:
 a first-direction guide portion extending toward one side of the direction in which the long sides of the cover plate extend;   a curved guide portion formed so as to curve from the terminal end of the guiding direction of the first-direction guide portion toward one side of the direction in which the short sides of the cover plate extend; and   a second-direction guide portion further extending from the terminal end of the guiding direction of the curved guide portion toward one side of the direction in which the long sides of the cover plate extend.   
     
     
         6 . The vehicular lead storage battery according to  claim 5 , wherein the battery container includes a plurality of cell chambers, the cover plate includes exhaust openings for respectively discharging gases from the plurality of cell chambers, and the curved guide portion is formed so as to curve along the exhaust openings. 
     
     
         7 . The vehicular lead storage battery according to  claim 1 , wherein the third guide portion is formed into a taper shape in which the third guide portion decreases in diameter as the distance thereof from the exhaust vent increases. 
     
     
         8 . The vehicular lead storage battery according to  claim 1 , wherein a plurality of protrusions projecting from an external surface of the cover plate are radially disposed at predetermined intervals in a circumferential direction and a cutout is formed between adjacent protrusions in the exhaust vent, and the cutout is oriented in a direction in which the vehicular lead storage battery inclines when mounted on a vehicle with a surface formed of opposed two sides of the vehicular lead storage battery positioned substantially level or horizontal. 
     
     
         9 . The vehicular lead storage battery according to  claim 8 , wherein the cover plate includes:
 a side surface having the exhaust vent, a portion of the side surface in the cover plate below the exhaust vent being swelled outward from the side surface having the exhaust vent; and   a continuous inclined surface between an upper end portion of the swelled side surface and a lower end portion of the side surface having the exhaust vent.   
     
     
         10 . A vehicle equipped with a vehicular lead storage battery comprising a vehicular lead storage battery comprising:
 a battery container in which an upper opening is formed and which is provided with at least one cell chamber; and   a cover plate in which an exhaust vent is formed and which covers the upper opening of the battery container,   wherein a guide path for discharging gases inside the cell chamber to the outside is formed in the cover plate, the guide path including:   a first guide portion for horizontally guiding gases from the cell chamber;   a second guide portion connected to the first guide portion to downwardly guide the gases from the first guide portion; and   a third guide portion connected to the second guide portion to horizontally guide the gases from the second guide portion and discharge the gases from an exhaust vent to the outside,   a corner portion is formed by the first guide portion and the second guide portion,   another corner portion is formed by the second guide portion and the third guide portion, and   the guide path is formed so that the angle of a straight line having internal contact with the two corner portions from a horizontal line is greater than the maximum angle of inclination at which the inclined angle of a vehicle is maximum during driving on a sloping ground.