JPS609065A - Sealed lead storage battery - Google Patents

Abstract

PURPOSE:To shorten a time required for recovery charge while making it possible to let a prescribed charging current flow in a short time when performing recovery charge after being left as it is after overdischarge, by making an electrolyte to contain an alkaline metal or alkaline earth metal salt. CONSTITUTION:Electrolyte is made to contain a prescribed amount of an alkaline metal or alkaline earth metal salt, for instance, about 0.1-2.1wt% of the electrolyte. As said salt, for instance, sodium sulphate (Na2SO4) or sodium salt of lignin (thiolignin sulfonic acid soda) is used. In this way, when leaving the alkaline metal or the alkaline earth metal salt contained in the electrolyte, the electrolyte, in which electric resistance is increased because of neutral condition formed by being left as it is after overdischarge, can be given electric conductivity thus being able to quickly let a prescribed charging current flow when performing recovery charge.

Description

[Detailed description of the invention] Production 4'j: Use of J?〒P The present invention relates to a sealed lead-acid battery.

Conventional technology i1: i Portanol type video cheap coater etc.? ≦! Therefore, maintenance such as charging and charging of the electric FRif is omitted and the maintenance time is reduced to 11. /,: A sealed lead-acid battery is used. 1)) In this type of storage battery, when the electrolyte is discharged in an overdischarged state with an extremely small amount of electrolyte (d), Pl-1 of the electrolyte becomes close to 7 (=I), and the resistance of the electrolyte Therefore, when charging after leaving the battery in an overcharged state, it takes a very long time for the specified charging current to flow.Especially when charging the battery with a charger In general, it is necessary to flow a current of 100 mA in order to turn on the indicator lamp that indicates the charging status, but with conventional sealed lead-acid batteries, when charging from an over-discharge state, the charging current decreases to 100 mA. Because it takes a considerable amount of time to reach this point, it takes a considerable amount of time after the charger is turned on until the indicator lamp lights up, and it could be determined that the charger or battery has failed.

OBJECT OF THE INVENTION The object of the present invention is to provide a sealed lead-acid battery (; It is in.

Structure of the Invention The present invention provides a sealed lead-acid battery in which a positive plate and a negative plate are housed together with an electrolyte in a sealed battery case, in which the electrolyte contains an alkali metal or alkaline earth metal salt. It is characterized by

If you avoid containing salts of alkali metals or alkaline earth metals in the above-mentioned electric PI (li), the electrical resistance of the electric material will increase if left in an over-discharged state. Because it can suppress
A predetermined charging current is passed through J.

The following drawings are shown in the following examples: Seal 1 of the present invention (accumulation)
I explain Ya to hT Aya.

Figure 411 shows an example of the sealed lead acid battery of the present invention in 416 construction.
When closing 1y1, there is "31." The container 1 is divided into 12 regions Va, 4, . . . by the distance Xi3.

A rib 5 extending in the vertical direction is provided on the wall covering the side 4 of each rail chamber 4.
．． 5 is provided in each cell blank, one anode plate 6 and two cathodes (7, 7 and 7 are positive (small plate 6 and negative (assembled plate 7.
The e-anode tJii 6 is housed between 7 and 7.
In the gap between 4jj and 4jj (7.7), a Leeano-8 whose cross section is approximately U-shaped is inserted. Retape 8
The retainer 8 is made of, for example, a nonwoven fabric of glass fiber, and the retainer 8 is impregnated with an electrolytic solution (dilute sulfur M).

In this example, retape 8 and electric +1/? 'Ik' is composed of an electrolyte that is made non-fluid. The lid 2 is formed into a double-layer structure having an upper wall 9 and a lower wall 10, and has an anode column 6A rising from a lattice of an anode plate 6 and a cathode plate 7.
The anode column 7A stands up from a strap 70 connecting the grids of , 7 at the upper part and passes through the lower wall 10 of the indigo 2 C1 to form an upper chamber between the upper wall 9 and the lower wall 10 of the lid. 11
It is derived within.

Although not shown, the anodes 1-1 and anode columns of adjacent rails are connected to each other within the upper chamber 11 and to an external terminal (not shown). A cylindrical gas handling port 12 is provided in the lower wall 10 of the waste container 2, and a gas handling port 12 made of rubber q is installed at the upper end of the waste container 1 to prevent the pressure inside the waste container 1 from reaching a predetermined value. ``When you hear it, listen to it when you hear it.''[)

The anode plate 6 and the cathode plate 7 are manufactured by filling a grid made of an antimony-free lead alloy with paste to form a paste-filled plate, and then subjecting the filled plate to chemical formation. In this case, the formation of the 114ffi plate or water decomposition proceeds with the photogenesis of LJJ and Ru02, so the anode active material that is formed at the end of the formation is rich in pores.
Also, in the chemical formation process, due to the presence of air bubbles in the chemical formation process, the sulfate radical 2 (-S O4) in the chemical formation process expands! I was harmed and base 1
') E) 02 I/J' mU, Pl) Ox (
x < 2) J: There will be 4C low-handling monsters. As mentioned above, if the anode active material i< is rich in the pores 11 and lυ, then this anode plate is used to form a sealed lead-acid battery (I
When J1 is formed, electrolysis, 1 is the P of the surface anode active material.
Self-discharge due to contact with b 11? There is a tendency to move forward. j
lower oxide 1-]bQ (x<2) in the anode active material C1
× If exists, the over-discharge state - (・Recovery when recovery charging is performed after leaving the device unattended.)
There is.

The invention is based on the ability to solve these problems first.
i 4ii (Anti 51 Ji Ao Puno 1 person;? plan l
child. After the formation of the anode plate 1.1 times, (14i after the formation of
(13
At the same time, while avoiding electricity, the PbO in the anode active material Tl is brought into contact with dilute sulfuric acid to form PbSO4, and then chemical formation is performed again. Go and pp the PbSO4
bo,, the anode plate manufactured by the unadulterating method has a very dense active material and very little lower oxide remaining in the active material. Therefore, self-discharge 1! The recovery performance after over-discharging and over-discharging are dramatically improved.

In the present invention, a predetermined amount of alkali metal or alkaline earth metal salt is added to the above-mentioned lightning material, for example, about 0.1 to 2.1% of a small amount of LEE electricity. Examples of this salt include sulfur salt (Na2SO4) or lignin salt (A lignin sulfate A).
(sodium chloride) is used. If an alkali metal or alkaline earth metal salt is contained in the electrolyte, the electrolyte becomes neutral after being left for over-discharging and the electrical resistance increases. Since conductivity can be imparted, a predetermined charging current can quickly flow when recovery charging is performed. Methods for incorporating the above-mentioned alkali metal or alkaline earth metal salts into the electrolyte include dissolving them in the electrolyte FIT i1M, as well as adding them to the anode paste. Ill L C1B <method, lj < 7j method, lj < 7j method, lj < 7j method, sj-Ichino] There are 15 methods, etc., but J3 is not included in the present invention.
I, these methods are good.

No. 2121 shows the experimental results of measuring the recovery performance in the case of 8 electric power 1 L151. In this actual ship, C completed the battery Riti12V, 2Δ1-1 battery L! ／、： ? u, excess b'i nfi =g li,
Sono J, Mamuro Kj + C 10 days broadcast 1f7i Shita 1 Rei 1
/1.7V'i: This shows the relationship between charging time and charging current when there are 11 constant voltage charges.

1111 figure +I3 (111i 2jH/\(, 1den 1
1' into the liquid and 0.7% of the cliff in it, A [1jj-11
-Contains RIU-11! , Iζ Seal lead-acid battery σ of this defense] I "6, 1 go,; 1 sword #! if I'3 L
Jyo ([]F treated as Ul) Completely converts into 02/-=(
Thanks to the above-mentioned person! 1! ! :! '+1 in substance
] [) ○ Reduces excitement to the rest] Also) shi 1 easy inclusion of 1 more song 1! i1 G
Is the conventional seal 'I'li Mi?' in which the (l)mQ) low-grade oxide PbO remains in the anode active material? This shows the case of an fS song.

As shown by the curve IJ in FIG. 2, in the sealed lead-acid battery of the present invention, the charging current increases to 1t to 100 mA in only about 1 second after the start of charging. This 100 rrl A
The current is exactly the value required to light up the indicator lamp that displays the charging status.When charging a C1 battery, turn on the charger and then turn on the indicator lamp immediately. ka'C monkey. Therefore, even if charging is being performed as usual, there is a possibility that the charger or battery has failed]
I never get Jl.

In the above-mentioned embodiments, a battery impregnated with an electrolytic solution was used. C is a gelatinized material, and the retainer is impregnated with a gelatinized material. ;iν a
A combination of eroded material and gelled material,
In the present invention, which of these electric currents t)? 7.1
You may also use

Effects of the Invention As described above, according to the present invention, IJ contains an alkali metal or alkaline earth metal salt in the electrolyte. 1-. Perform recovery charging after 3AI discharge and leave. 1! For a short period of 1 to 1 (a specified charging current can be passed through -
(However, ηReduction of the time required for recovery charging f 1
Ejl Z) is (,\),'+,1. lr,,
You can check that the charging Z3 display lamp point t3 or 1lil is on, and the battery and charging: "Hot I)\il-7i'"
; C1l) l') + Koshi1 phrase et al', -1 (Kuni and Kanda i prevent C doka (-Saru- /I Shi 1 page (1) liji A's explanation'!1 The figure is from book 5 and the seal 1;) I received Seizo's -191 of the valley type il!! fili ij'ii figure, 121
Noro; LC (Next Seal Rei Wi battery and Seal of the present invention 1; 1 moss) After leaving the battery over discharge
, 'lj <N <-r -') /j, 1. ',
i combination (1) times (!, i bamboo (1[; indicates 1-'/rough'
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Claims (1)

[Claims] Both the anode plate and the cathode plate are sealed type electrodes.
In the sealed lead-acid battery housed in a, the electrolyte contains an alkali metal or alkaline earth metal salt.
It is specially designed for sealed lead foil batteries,