JPS63205047A - Sealed lead-acid battery - Google Patents

Abstract

PURPOSE:To increase the strength of a container and to increase the energy density per volume of a battery by embedding the periphery of a metal plate whose surface facing a power generating element is covered with at least two resin film layers in a resin frame, and melt-bonding the resin frames of divided cases for sealing. CONSTITUTION:A container side wall which usually deforms easily by the increased internal pressure of a battery and permeates moisture in an electrolyte is made of a metal plate 1 covered with a double film 4 comprising resin films 2, 3. The metal plate 1 has high mechanical strength and can prevent the permeation of water vapor. Moreover, the presence of the resin film 4 obstructs the contact of the metal plate with an electrolyte to prevent the corrosion of the metal plate 1. Thereby, the thickness of a container is made thin and the volume for accommodating a power generating element can be increased. The periphery of the metal plate 1 covered with the resin film 4 is embedded in a resin frame 17 to prevent exposure, and the separation between the metal plate 1 and the resin frame 17 caused by the external force such as scratching can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of oncology The present invention relates to a lead battery, particularly a small 14-inch sealed lead battery.

(b) Takumi's technology in general, small and thin plate 1! a is, for example, JP-A-60-2
In the F shown in Japanese Patent No. 16440, a current collector that also serves as an exterior case is used, and a genus cell is placed between the positive and negative electrode current collectors, and a heat bath layer is placed between the peripheral edges of the 7. It has a structure in which a resin frame (arranged, each power supply body, a resin frame, and a heat bath layer are placed and then closed).

Therefore, since the lead tIL turtle uses sulfur #R as the electrolyte,
As described in t5U, if we consider the structure in which the 4ys liquid is in linear contact with the current body that also serves as the exterior case, there are 4 types of metals such as niracle, iron, or stainless steel that make up the fruit area τ. There are some things that cannot be used as lead screws because they become rotten and weakened by the fire, leading to destruction.

SFM/b## In the construction, the joint end of the power source and the resin frame is exposed, so is it a cage? During the salt collection process, a crack occurred at the joint end, causing the electrical body to come into contact with the resin frame! There are concerns that tI will be released. Furthermore, in the above-mentioned structure, it is not possible to provide a safety valve for preventing electric discharge due to an increase in battery internal pressure.

Therefore, the applicant proposed a small, Ij-type closed-open lead 'am'.
A structure suitable for this was proposed in JP-A-60-77356 or JP-A-60-193257. Its structure consists of a battery 11L tank consisting of a pair of split cases made of resin, and when the split cases are made by injection molding, a plate-shaped fruit area made of lead alloy is integrated into the center of the inner surface. A safety valve mechanism is attached to the split case, and #5 is placed between the two parts of the split case, and the peripheral edge of the split case is controlled by attaching it to the weld. It is to be closed.

(c) Problems to be solved by the invention JP-A-60-77356 or JP-A-60-19
The lead press a proposed in Publication No. 3257 has a resin split case with a metal exterior, and the resin split case is integrated with the case and is integrated with the Kuo electric body S++ note to make it 11L.
Because it is necessary to maintain strength against the internal pressure of the turtle, the material of the resin split case is made thicker, and as a result of #7!
Element 0 becomes smaller, and the volume effect of the electron a becomes larger unless it is increased. In addition, the case is made of a 7x vapor permeable resin, and the exterior body and the lead metal current collector are integrated by injection molding, so there is no need to worry about the presence of the current collector when assembling the current. 1& is used to prevent water vapor from permeating through the upper and lower surfaces of the wire, but if the photodischarge is repeated, the electrolyte will enter between the current collector and the resin exterior, and this infiltrated electrolyte will Moisture in the liquid passes through the resin exterior body 1 as water vapor, causing depletion of the electrolyte and reducing the lifespan of the electrolyte.

The present invention aims to solve the above-mentioned problem of the rice-arashi pond.
It is a purpose.

2) Means for resolving problems tPs The closed type lead according to the present invention is made by embedding a plurality of metal plates on the periphery of a metal plate covered with a resin film facing the power generation element in a resin film. It is equipped with a divided case and an extrusion element housed in the divided Kusu circle, and the resin frame 1gI of each divided case is welded and sealed, and the bσ grip film is made of at least two layers. There is a summary. As the front SC resin film, it is preferable to use a film that has good adhesion to the metal plate and has low water vapor permeability, and a film that is the same as the resin used for the resin frame.

(E) Function If the 4-torque structure of the present invention is erected, the upper and lower surfaces of the battery case, which are easily permeable to λ-type 1 due to the rise in internal pressure of the battery and 4. The upper and lower surfaces of the battery case are easily penetrated by the resin film, are metal plates. The metal plate is rich in strong I-containing compounds and can prevent water vapor from passing through, and the resin film prevents contact between the metal plate and the electrolyte. This prevents corrosion of metal plates. Therefore, due to the material thickness of the case, it can be made thinner than a case made of only resin, and the size of the case can be made larger. In addition, since the peripheral edge m of the metal plate covered with the resin film is buried in the resin frame and is not exposed to the outside, peeling may occur between the metal plate and the resin frame due to external forces such as sticking. do not have.

Historically, as mentioned above, the interposition between the resin split case and the current collector was done during injection molding, and since the Aa1 material of the resin and the remaining end was joined, photodischarge was repeated to separate the zushi and its There was a bottle that allowed sulfuric acid, which is an electrolytic solution, to enter through the joint surface, and water vapor to pass through, but as in the above method,
Since the Rfit-recoverable resin film and the resin frame facing the power generation center of the metal plate are joined with each other, an airtight and liquid-tight structure can be obtained. Prevents infiltration of electrolyte and prevents the metal plate from being affected by electrolyte.
Since it suppresses the permeation of % water vapor without reducing the temperature,
+5 depletion of electrolyte can be suppressed.

In addition, historically, the resin film that covers the metal plate is rarely one that has high adhesion to the metal plate and has a low water vapor transmission rate.
and a second film of the same quality as the resin used for the resin frame. When the first film is twisted against the metal plate and the second film is bath-bonded with the resin frame, the metal The plate is well bonded with a water vapor permeable small Ml film, and is used for the side blade frame as a result of the material being homogeneous when applied to the film of I; Since welding is carried out, extremely high bonding properties are achieved, and the amount of air and liquid injection is reduced.

In addition, the battery can be reliably closed and closed with the resin frame at each station, such as in the Super-Yasaka bath.

(to) Laughing example Hereinafter, examples of the present invention will be explained in detail based on the drawings.

Figure 1 shows thickness 0.3ffl tensile b”m K 70
A steel plate (1) of #/m'' or more is punched into a dish shape using a press machine and made into a 1&tank grate (5). In the recessed part, place a 0.11 thick 2N biased fat film (4) of 0.05 trm polystyrene (2-bar metal plate (steel plate) 1141) and -0.05 trm polystyrene (3-bar Nag side). m & (laminate).Using this gray H5Jk battery case, insert injection molding is done with a polishing grade.
Mold with S High Impact Sprawl, ′,!
! 41i! Let I(67, (7)).And in history, Iy
, the joint between the mold side fat and the resin film was heat welded. These containers are as shown in Figure 2 (aJ, (bJ), respectively.
Similarly formed. Note that the following steps will be described for the anode, but the same applies to -100 million.

As shown in Fig. 3, insert the lead part αα of the current collecting plate (9) made of a clamshell that has been punched and molded into a smooth shape into the lead exit hole f8J of the anode cell ((j)). , due to the instant curing agent, the first plate (9) k and the steel plate of the anode cell (6) (
1) On the side covered with the K resin film (4), place 1I811 on the surface of the polystyrene film (37) on the part that is not molded into the resin.

Next, attach the terminal plate σII busy spot welding terminal attachment part σ to the lead part α which is protruded 1fj from the lead outlet (8).
4 has a 6A attached to it, and a 4 with a terminal and an electric rod (6) (see Figure 4). A slurry made of lead oxide and a sterilizing agent was filled with light into a concave portion having a current collecting plate (9), and a dried cage electrode active material layer (131, a glass 7-parter impregnated with an electrolyte solution of dilute sulfuric acid = 9) was filled with light and dried. tt41t-scissors, 1 field pole II, 4
A safety valve (16
), and by ultrasonic welding the yin and yang images of one cypress resin frame together, the ki d! In his greed, the cormorant, as shown in Fig. As shown in the 6th evil, books! a song 41 gourd 1 yu, the mask of the tank great and the mask of 1 father, riyori nabekotori 10 How is it compared to Enka from the tank route? The thickness of the tsuta-kograte (which is not the same as the tsuta-kograte) is 4μ thick.) The amount of water vapor is extremely small, so it has no effect in practical terms.

I'm jealous of this work:, 4 turtles are all n 100 million%
I was on the 2nd floor and saw what I had done at the resin stove (made of rice). &
4a plate h-min thickness is 0.9 required for heavy equipment.
2 i'c tl) In contrast to K, the non-axis V is 0
．． T-Ro Kotoka Town is thin until 4 meals; At first glance, one person is able to do something equal to or more than Q in A-like e-ko, and the physical examination is young, and the text is weighed in a variety of ways. Approximately 30% of chivalry 4
Same as above, Seruko ζ has appeared.

Moreover, Uokura ζ, who is said to be surprised by the flow of water vapor,
Polystyrene (2) (Gold J4 & 1g111 Nopolis T
Using the resin film of Shin (3-bare 'wL support blocks), during the insert injection molding of the resin frame, we used the stall-based resin crushed metal cedar or the G-plate and heated Japanese tiles of the same roll. Melting is carried out, and a high degree of molarity is obtained between the resin film and the resin frame, which very effectively suppresses the permeation of the bulge A.Thus, the shelf life of the 47tl! of the present invention is extended. Ki is
Compared to conventional products, it can save about twice as much. In addition, in Example 2, after injection molding, it was re-injected.
) Although this is done using a JD heat bath layer, adding this step further improves the Ic, t, and t of the bonding between the resin frame and the resin film.

As the other *- row, use the gold J4 & shown in Fig. 8 laminated with the double resin film used in the Fuki row, 8
Assemble the electric grenade as shown in Figure 11. As shown in Fig. 8, the metal plate is bent at three points, and the metal plate 1 is made of cypress gray [see Fig. 347 for processing].The bent portion of the metal plate is caulked as shown in Fig. 10. Using this t, the t-t tank shown in FIG. 11 was obtained by injection molding a resin frame t-insert in the same manner as in the nU holder. Furthermore, this turtle 4a
The final result is from the F-Na Densei shown in Figure 13. With this advanced configuration, a closed lead abrasive pond with reduced water vapor permeability can be obtained.

In addition, the properties of polyethylene and polystyrene films shown in the example shown in the example are shown in the following table regarding the properties X k /j (vapor permeability).

As shown in the table above, polyethylene film has very low water vapor permeability, and its properties are poor because it is not very close to metal. - Since the polyethylene film is of the same quality as the ABS High Inbactus T roll, which is the superior molding material for the resin frame, a tight fit can be obtained. Sex over 3ft%
r: The following is the result of the original use and completion of the present invention.

(Effects of the Invention) The sealed power supply a of the present invention can increase the strength of the battery case and increase the volumetric energy density of the battery. Since the degree of bonding with the 'l1La is improved, it is possible to improve the hermeticity of 'l1La' and improve the shelf life of the pond, and its industrial value is extremely large.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention. Figure 1 (a) is a conceptual side view of the battery case grate, Figure 1 (b) is an f+ view of the battery case grate, and Figure 2 (aJ is the anode battery case). Fig. 2(b) is a perspective view of the anode cell, Fig. 3 is a conceptual diagram of the anode cell assembly, Fig. 4
The figure is an exploded perspective view of a closed type 11L lead battery, Figure 5 is a perspective view of a Tobu lead battery, Figure 46 is a sectional view taken along I-I' Mandong in Figure 5, and Figure 7 is a 6 Figure (6) partially enlarged %, il cross-sectional view, #!8 figure is the tank play (
・, FIG. 9 is an assembled perspective view of the IW row plate used in another embodiment, FIG. 10 is a partially enlarged top view of FIG. 7 (a), and FIG. ￥I is a perspective view of the resin frame molded onto the battery case grate shown in Fig. 7, Fig. 12 is a longitudinal cross-sectional view taken along n-n' bank of Fig. 11, and Fig. 13 is a perspective view of the molded resin frame on the battery case grate. It is a prisoner who shows what will become the lid of IKm. (1)...Metal (steel) temporary, (2)...Polyethylene film, (33...Polys t-7 film, (4)...
]...2-N resin 7 ilm, (5J...1 tank play), (6J...anode electrode 4'1. (71...cathode 1 tank, (8)...lead dare Output slot, (9)... Current collector plate, αG... Lead part, tLll... Terminal board, σ
ri...Terminal mounting part, (131...electrode active material rvl
ssu4)...Glass separator s t151...
Female full valve mounting part, utIl...safety valve, aη...resin frame. Actor: Sanyo IEki Co., Ltd. Patent attorney Guntsugu Nishino (1 other person) Figure 1 Figure 8 Figure u

Claims (2)

[Claims] (1) A plurality of divided cases formed by embedding the peripheral edge of a metal plate whose surface facing the power generating element is covered with a resin film in a resin frame, and a power generating element housed in the divided case, each divided A sealed lead-acid battery, characterized in that the resin frames of the case are welded together to seal them, and the resin film is made up of at least two layers. (2) The at least two-layer resin film is characterized by comprising a film that has high adhesion to the metal plate and low water vapor permeability, and a film that is the same as the resin used for the resin frame. A sealed lead-acid battery according to claim (1).