JPS61263041A - Thin type sealed lead-acid battery - Google Patents

Abstract

PURPOSE:To reduce deformation of a battery even when the pressure inside the battery was increased or decreased to prevent decrease in battery performance by fixing two container walls parallel to plates in a thin type sealed lead-acid battery with a supporting member which is arranged vertically to the electrode plates. CONSTITUTION:A power generating element comprising a negative plate 3, a separator 4, and a positive plate 5 is accommodated in a container 1, and a vent 7 is formed in a cover 6 to constitute a thin type sealed lead-acid battery. Two container walls 2, 2' parallel to the plates 3, 5 are fixed with a supporting member 10 which is arranged vertically to the plates by passing through the plates. Thereby, the deformation of the battery can be reduced even when the pressure inside the battery was increased or decreased. Even if the thickness of the container is reduced, the decrease in charge-discharge performance caused by bulging of the container resulting from pressure increase and the leakage caused by denting of the container resulting from pressure decrease are prevented. Volume efficiency and weight efficiency of the battery are also increased.

Description

[Detailed Description of the Invention] Industrial Field of Application A sealed lead-acid battery using an oxygen cycle is equipped with a valve in the exhaust section, and when the inside of the battery is pressurized above a certain value, gas is released, but when the pressure is reduced, No outside air can enter. Therefore, the battery case is subjected to both pressurization and depressurization forces.

The wall of the battery swells outward when pressurized, and retracts inward when the pressure is reduced. When the wall of the battery swells, a gap is created between the positive and negative electrode plates and the separator, which blocks the passage of current and impairs charging and discharging performance. descend. Further, there is a problem in that when the wall of the container is dented, the separator is compressed and the electrolyte is squeezed out, causing leakage. This drawback of sealed batteries is particularly noticeable in thin sealed lead-acid batteries. This is because if a battery of the same capacity is made thinner, the vertical and horizontal dimensions of the battery case wall will increase, making it easier to deform.

Means for Solving the Problems The present invention provides a thin sealed open lead 17 battery using flat plates, in which two container walls parallel to the plates are arranged perpendicularly to the plates. It is to be fixed with.

The support may be placed through the electrode plate group, or a plurality of electrode plate groups may be arranged in parallel and the support may be placed in the gap between them.

Embodiment FIG. 1 is a partially cutaway side view showing an embodiment of the thin sealed lead acid battery of the present invention. In the figure, 1 is a battery case, 2 and 2' are two battery case walls parallel to the electrode plate, 3 is a negative electrode plate, and 4 is a porous separator, which is made of thin fibers made of hydrophilic material such as glass or plastic. mats, etc. 5 is a positive electrode plate, 6 is a battery case lid, 7 is an exhaust part fixed to the positive electrode 6, 8 is a negative electrode terminal, 9 is a positive electrode terminal, 10 is a support body consisting of a negative electrode plate 3, a separator 4, and a positive electrode plate 5. Two battery case walls 2, 2' which perpendicularly penetrate through the plate group and are parallel to the scraping plate are fixed.

FIG. 2 is a schematic vertical cross-sectional view showing an embodiment of the battery pond of the present invention, in which 11 is one plate group consisting of positive and negative electrode plates and a separator, 12 is another plate group, and the plate P , Y, 1
It is arranged in parallel with 1. The negative electrode plates of the electrode plate groups 11 and 12 are connected by a connecting conductor 13, and the positive electrode plates are connected by a connecting conductor 14, respectively. Reference numeral 10' denotes a support disposed in the gap between the electrode plate groups 11 and 12, which is arranged perpendicularly to the electrode plates and fixes two wall surfaces parallel to the electrode plates.

Effects of the Invention Since the thin sealed lead-acid battery of the present invention has two container walls parallel to the electrode plates fixed by a support, deformation m can be reduced even if the inside of the battery is pressurized or depressurized. I can do it.

Therefore, even if the wall surface of the battery case is made thin, there is no risk of deterioration in charging and discharging performance due to swelling due to pressurization or leakage due to dents due to reduced pressure. That is, there is an effect that the volume efficiency or weight efficiency of the thin battery can be increased.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing one embodiment of the thin sealed lead-acid battery of the present invention, and FIG. 2 is a schematic vertical cross-sectional view showing another embodiment of the thin sealed lead-acid battery of the present invention. DESCRIPTION OF SYMBOLS 1... Ilt tank, 2, 2'... Battery tank wall parallel to the electrode plate, 3... Negative electrode plate, 4... Separator, 5... Positive electrode plate, 10.10'... Supports for cell wall 2, 2', 11
．． 12... Plate group end' 1 times large 2'y! Audience at U 12,000 r τ 14 Procedure Niff Main Gate (Method) % Formula % 1. Indication of the case 1985 Patent m No. 104593 2. Name of the invention Case of person who amends thin sealed lead-N battery 3° Relationship with Patent Applicant Location: 1, Kisshoin Nishinoshō Inobaba-cho, Minami-ku, Kyoto City Name (428) Nippon Battery Co., Ltd. Representative: Nobuo Nasu 4, Agent/Address: 601 Kisshoin Nishi, Minami-ku, Kyoto City Nosho Ino no Baba-cho 1ffr land 5, date of amendment order August 7, 1985 (shipment date August 27, 1985)
6. ``Detailed Description of the Invention'' column of item m4 to be amended. 7. Correction details 1ff! Detailed explanation of page 1, lines 12 and 13,

Claims (1)

[Claims] 1. A thin sealed lead-acid battery using a flat plate, characterized in that two battery case walls parallel to the plate are fixed by a support placed perpendicular to the plate. . 2. The thin sealed lead-acid battery according to claim 1, wherein the support passes through the electrode plate group. 3. The thin sealed lead-acid battery according to claim 1, characterized in that a plurality of electrode plate groups are arranged in parallel and a support is arranged in the gap between them.