Lead acid storage battery

• US 5,521,024 A
• Filed: 03/24/1995
• Issued: 05/28/1996
• Est. Priority Date: 03/24/1994
• Status: Expired due to Fees

• Current Assignee: GS Yuasa Corporation
• Original Assignee: GS Yuasa Corporation
• Inventors: Sasaki, Masaaki, Murata, Kazuo, Arakawa, Masahiro, Horii, Tohru
• Primary Examiner(s): Kalafut, Stephen
• Assistant Examiner(s): LILLEY, RICHARD
• Application Number:
  US08/409,524
• Time in Patent Office: 431 Days
• Field of Search: 429/161, 429/162, 429/163, 429/130, 429/152, 429/153, 429/185
• US Class Current: 429/162
• CPC Class Codes: H01M 10/126 Small-sized flat cells or batteries for portable equipment H01M10/123 and H01M10/125 take precedence
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/6551 Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
• CPC Class Codes: H01M 10/6562 with free flow by convection only
• CPC Class Codes: H01M 50/30 Arrangements for facilitating escape of gases
• CPC Class Codes: H01M 50/317 Re-sealable arrangements
• CPC Class Codes: H01M 50/50 Current conducting connections for cells or batteries
• CPC Class Codes: H01M 6/48 with bipolar electrodes
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A lead acid storage battery has a cell composed of a positive plate comprising a positive active material layer and a positive current collector plate, a negative plate comprising a negative active material layer and a negative current collector plate, a separator and a frame-shaped gasket. In the cell, the positive plate and the negative plate are laminated with the gasket put between them. The gasket is in contact with peripheral edges of the positive current collector plate and the negative current collector plate. The positive active material layer and the negative active material layer are located in a cell space surrounded by both of the plates and the gasket with the separator put between them.

Claims

1. A lead acid storage battery having a cell which comprises a positive plate comprising a positive active material layer and a positive current collector plate, a negative plate comprising a negative active material layer and a negative current collector plate, a separator and a frame-shaped gasket wherein

in the cell, the positive plate and the negative plate are laminated with the gasket put between them, the gasket is in contact with peripheral edges of each of the positive current collector plate and the negative current collector plate, and the positive active material layer and the negative active material layer are located in a cell space surrounded by the positive current collector plate, the negative current collector plate, and the gasket with the separator put between the positive active material layer and the negative active material layer;

and

in which the cell space comprises one space, and wherein an exhaust port extending between the cell space and the outside of the cell is provided in at least one of the positive current collector plate or the negative current collector plate.

2. A lead acid storage battery having a cell which comprises a positive plate comprising a positive active material layer and a positive current collector plate, a negative plate comprising a negative active material layer and a negative current collector plate, a separator and a frame-shaped gasket wherein

in the cell, the positive plate and the negative plate are laminated with the gasket put between them, the gasket is in contact with peripheral edges of each of the positive current collector plate and the negative current collector plate, and the positive active material layer and the negative active material layer are located in a cell space surrounded by the positive current collector plate, the negative current collector plate, and the gasket with the separator put between the positive active material layer and the negative active material layer;

and

in which the cell space comprises two chambers partitioned by the separator, and wherein an exhaust port extending between the cell space and the outside of the cell is provided in at least one of the positive current collector plate or the negative current collector plate, and wherein an air vent hole between the two chambers extends through the separator.

3. A lead acid storage battery having a cell which comprises a positive plate comprising a positive active material layer and a positive current collector plate, a negative plate comprising a negative active material layer and a negative current collector plate, a separator and a frame-shaped gasket wherein

in the cell, the positive plate and the negative plate are laminated with the gasket put between them, the gasket is in contact with peripheral edges of each of the positive current collector plate and the negative current collector plate, and the positive active material layer and the negative active material layer are located in a cell space surrounded by the positive current collector plate, the negative current collector plate, and the gasket with the separator put between the positive active material layer and the negative active material layer;

and

in which the gasket is formed integrally with the separator.

4. A lead acid storage battery having a cell which comprises a positive plate comprising a positive active material layer and a positive current collector plate, a negative plate comprising a negative active material layer and a negative current collector plate, a separator and a frame-shaped gasket wherein

in the cell, the positive plate and the negative plate are laminated with the gasket put between them, the gasket is in contact with peripheral edges of each of the positive current collector plate and the negative current collector plate, and the positive active material layer and the negative active material layer are located in a cell space surrounded by the positive current collector plate, the negative current collector plate, and the gasket with the separator put between the positive active material layer and the negative active material layer;

and

in which multiple cells are put in side-by-side positions in alternating upright and upside down positions, and wherein a positive current collector plate of each cell is connected to a negative current collector plate of an adjoining cell so that the cells are connected in series, and wherein the current collector plates connected to each other comprise one current collector plate.

5. A lead acid storage battery having a cell which comprises a positive plate comprising a positive active material layer and a positive current collector plate, a negative plate comprising a negative active material layer and a negative current collector plate, a separator and a frame-shaped gasket wherein

in the cell, the positive plate and the negative plate are laminated with the gasket put between them, the gasket is in contact with peripheral edges of each of the positive current collector plate and the negative current collector plate, and the positive active material layer and the negative active material layer are located in a cell space surrounded by the positive current collector plate, the negative current collector plate, and the gasket with the separator put between the positive active material layer and the negative active material layer;

and

in which multiple cells are installed in side-by-side positions in the same upright positions, and wherein a positive current collector plate of each cell is connected to a positive current collector plate of an adjoining cell, and a negative current collector plate of each cell is connected to a negative current collector plate of an adjoining cell, and wherein the current collector plates connected to each other comprise one current collector plate.

6. A lead acid storage battery having a cell which comprises a positive plate comprising a positive active material layer and a positive current collector plate, a negative plate comprising a negative active material layer and a negative current collector plate, a separator and a frame-shaped gasket wherein

in the cell, the positive plate and the negative plate are laminated with the gasket put between them, the gasket is in contact with peripheral edges of each of the positive current collector plate and the negative current collector plate, and the positive active material layer and the negative active material layer are located in a cell space surrounded by the positive current collector plate, the negative current collector plate, and the gasket with the separator put between the positive active material layer and the negative active material layer;

and

in which multiple cells are installed in laminated positions adjoining in a vertical direction in the same upright positions;

wherein a current collector plate located at an upper side of a lower cell and a current collector plate located at a lower side of an upper cell are made integrally and connected to each other by bending one current collector plate.

7. A lead acid storage battery having a cell which comprises a positive plate comprising a positive active material layer and a positive current collector plate, a negative plate comprising a negative active material layer and a negative current collector plate, a separator and a frame-shaped gasket wherein

in the cell, the positive plate and the negative plate are laminated with the gasket put between them, the gasket is in contact with peripheral edges of each of the positive current collector plate and the negative current collector plate, and the positive active material layer and the negative active material layer are located in a cell space surrounded by the positive current collector plate, the negative current collector plate, and the gasket with the separator put between the positive active material layer and the negative active material layer;

and

in which the battery has multiple laminated assemblies comprising multiple cells put side-by-side.