WO2019114435A1

WO2019114435A1 - Lead paste formulation of cyclic lead-acid storage battery for communication and preparation method

Info

Publication number: WO2019114435A1
Application number: PCT/CN2018/112350
Authority: WO
Inventors: 马晓曾; 钱晓杰; 张明; 楼志强
Original assignee: 双登集团股份有限公司
Priority date: 2017-12-12
Filing date: 2018-10-29
Publication date: 2019-06-20
Also published as: WO2019114433A1; CN108172835A

Abstract

Disclosed in the present invention is a lead paste formulation of a cyclic lead-acid storage battery for communication, comprising a positive electrode lead paste formulation and a negative electrode lead paste formulation. The positive electrode lead paste formulation comprises the following raw materials by weight percentages: 5.5 to 6.5% of dilute sulphuric acid, 10 to 11% of deionized water, 0.1 to 0.15% of short fibers, and the balance being lead powders. The negative electrode lead paste formulation comprises the following raw materials by weight percentages: 6 to 7% of dilute sulphuric acid, 10 to 10.5% of deionized water, 1.0 to 1.3% of barium sulfate, 0.1 to 0.5% of sodium ligninsulfonate, 0.1 to 0.15% of carbon black, 0.1 to 0.15% of short fibers, and the balance being lead powders. The present invention further comprises a preparation method for the lead paste of a cyclic lead-acid storage battery for communication. The over-discharging property and the recharging property of the lead-acid storage battery manufactured by using the present invention are significantly improved, thereby effectively solving the problems of frequent over-discharging and slow capacity recovery of lead-acid storage batteries during practical application due to a poor grid environment, and the recharging capacity is improved. Thus, the 100% DOD cycle life of the lead-acid storage battery is greatly improved.

Description

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Recycling lead-acid battery lead paste formulation for communication and preparation method thereof

[0001] The present invention relates to a lead-acid battery lead paste formulation, and in particular to a circulating lead-acid battery lead paste formulation, and more particularly to a circulating-type lead-acid battery lead paste formulation for communication. The present invention also relates to a method for preparing a lead-acid battery lead paste for communication.

Background technique

[0002] The power supply of the communication base station and the outdoor integrated cabinet is mostly a lead-acid battery. Since most of the communication base stations are built in the wild or in the suburbs of the city, these partial or urban-rural junctions are subject to geographical constraints, the supply of the mains is not normal, and there is a blackout. A lead-acid battery is a device that continuously converts electrical energy and chemical energy. The number of conversions is directly related to the quality of the lead paste. This frequent start-stop condition has a negative impact on the battery life of the battery.

Summary of invention

technical problem

[0003] The lead-acid storage battery of the prior art has a high amount of dilute sulfuric acid in the lead paste, and the corrosion amount of the positive and negative plates is correspondingly large in the electrochemical reaction process. Therefore, it can be said that dilute sulfuric acid is the main factor for reducing the cycle life of the lead-acid battery. One of the factors.

Problem solution

Technical solution

[0004] The present invention is mainly directed to the deficiencies of the prior art, and proposes a lead-acid battery lead paste formulation for communication, which is resistant to over-discharge and charge-receiving, and proposes a corresponding preparation method.

The present invention achieves the technical object by the following technical solutions.

[0006] A circulating lead-acid battery lead paste formulation for communication, comprising a positive lead paste formulation and a negative lead paste formulation, wherein the positive lead paste formulation is composed of the following raw materials in terms of weight percent: dilute sulfuric acid 5.5~ 6.5%, deionized water 10~11%, short fiber 0.1~0.15%, the rest is lead powder; the negative lead paste formula is as follows by weight

Ratio of raw material composition, dilute sulfuric acid 6~ 7%, deionized water 10~10.5%, barium sulfate 1.0~1.3%, wood _{\¥02019/114435}卩(: _{17€\2018/112350}

2 sodium sulfonate 0.1~0.5%, carbon black 0.1~0.15%, short fiber 0.1~0.15%, the rest is lead powder.

_[0007] As a further improvement, the dilute sulfuric acid has a density of 25 _{° (} : 1400 ± 0.002 _{§ /} 〇 ₁₁₃₎ .

_[0008] As a further refinement, the barium sulfate particle size of 3000 mesh.

_[0009] As a further improvement, the lead powder has an oxidation degree of ₇₂ to _78% .

[0010] A method for preparing a lead-acid battery lead paste for communication, wherein the positive lead paste and the negative lead paste are separately prepared, and the equipment used is a fully automatic and paste machine. The improvement is as follows: in the preparation of the positive lead paste, the short fiber is first added to the paste machine according to the ratio, and the barium sulfate and the lignosulfonic acid are added to the paste machine at the same time. Sodium, carbon black and short fibers, and then the separately taken lead powder is added to the corresponding paste machine, and the lead powder is added while stirring.

Adding, after the lead powder is discharged, continue to dry and stir 3.0~ 5.0 ₁₁ ^ ₁₁ , then inject a little once into the deionized water during the stirring process, add at least 5.0 ₁ ^ _{11 and} then add the dilute sulfuric acid in sequence, and continue to stir for 10~ 15 ₁ ^ _{11 after the} addition of dilute sulfuric acid, when the set temperature reaches _{73 ° (} : and maintain 3.0 ₁ ^ ₁₁ , open the cooling water, dust blower and cooling damper associated with the paste machine, quenching and causing a large amount of lead paste 4 : ₈₈ crystals, in this process and the paste machine continues to stir 12~ 15 ₁ ^ ₁₁ , the same time to determine the apparent density of lead paste, positive

The apparent density index of lead paste is 4.4~4.55 _§/ 〇 ₁₁₃ , and the apparent density index of negative lead paste is 4.25~ 4.45 _§/ 〇 _113. After the apparent density of lead paste reaches the standard, the temperature is less than 45 _{° (} : when the paste is obtained.

Advantageous effects of the invention

Beneficial effect

_[0011] Compared with the prior art, the present invention has the following positive effects:

_[0012] 1. The positive and negative lead paste components are reasonably matched, the raw materials are easily available, and are prepared under conventional process conditions, so that the implementation is easy;

_[0013] 2. The cycle life of the battery 100% _{000 is} increased from about 100 times to about 500 times. Significantly improve battery cycle life, the battery can be used in three types of grid environment;

_[0014] 3. The over-discharge performance of the lead-acid battery is improved, and the problem of frequent over-discharge and slow recovery of the lead-acid battery in the practical application due to the poor grid environment is solved;

_[0015] 4, the battery recharging performance is improved, to solve the problem that the battery is actually attenuated in the actual use of the floating charge voltage charging capacity, the battery recharging capacity factor _3⁄4 ^ 241 _{1 increased} from 92% ~ 9 _7% to 100% ~ 105%. BEST MODE FOR CARRYING OUT THE INVENTION \¥0 2019/114435 卩(:17 \2018/112350

3 Best Mode for Carrying Out the Invention

[0016] The invention is further illustrated by the following examples.

[0017] The circulating type lead-acid battery lead paste formulation for communication of the present invention comprises a positive lead paste formulation and a negative lead paste formulation. The positive lead paste formula and the negative lead paste formulation are all measured by weight percentage. The ratio of different examples of the positive lead paste is shown in Table 1. The ratios of the negative and lead paste different examples are shown in Table 2.

[0018] Table 1:

[] [Table 1]

[0019] Table 2:

[] [Table 3⁄4

[0020] The dilute sulfuric acid used in the present invention is 25° (the density is 1400±0.002 _§ /〇113, and the barium sulfate particle size is 3000). \¥02 _019/114435卩(:17€\2 _018/112350

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For the purpose, the oxidation degree of the lead powder used is arbitrarily selected from ₇₂ to _78% .

_[0021] On the basis of preparing raw materials, the lead-acid battery lead paste for communication of the present invention is prepared in the following manner.

First, the positive lead paste and the negative lead paste are separately prepared, and the equipment used is a fully automatic and paste machine. When preparing the positive lead paste, the short fibers are first added to the heating machine and the paste machine according to the ratio. In the preparation of the negative lead paste, barium sulfate, sodium lignin sulfonate, carbon black and short fibers are also added to the paste machine at a time, and then the respectively taken lead powder is added to the corresponding paste machine, lead powder. It was added by stirring while adding, and the dry stirring was continued after the lead powder was discharged, wherein Examples 1 and 2 were dry-stirred 3.0 ₁₁ ^ ₁₁ , and Examples 3 to 5 were dry-stirred 5.0 ₁₁₁₁₁₁ . Then, the deionized water is injected once during the stirring process, and after adding at least 5.0 ₁ ^ ₁₁ , the diluted sulfuric acid is sequentially added, and the diluted sulfuric acid is continuously added under stirring, and the diluted sulfuric acid is added in the examples ₁ and ₂

10 _111111, Embodiments 3 to 4 take 15 ₁₁ ^ ₁₁ . When the automatic and paste machine set the temperature to 73 ° 〇! and maintain

After that, the cooling water, the dust-removing fan and the cooling damper that are automatically turned on and the paste machine are automatically turned on, and the rapid cooling causes the lead paste to produce _4:88 crystal. During the cooling process, the paste machine was continuously stirred, and Examples 1 and 2 were stirred at 12 ₁ ^ ₁₁ , and Examples 3 to 5 were stirred at 15 ₁₁ ^ ₁₁ . During the process, the apparent density of the lead paste was measured. The apparent density of the positive lead paste was 4.4 ~ 4.55 _{§ /} 〇 ₁₁₃ , and the apparent density of the negative lead paste was 4.25~ 4. /〇 ₁₁₃ . After the apparent density of the lead paste reached the standard and at the temperature Less than 45 _{° (} : When the cream is released.

_[0022] The over-discharge performance and recharging performance of the lead-acid battery produced by the embodiment of the invention are significantly improved, and the lead-acid battery is effectively solved in the actual application due to the poor grid environment, causing frequent over-discharge and capacity recovery.

~ 105%. Therefore, the cycle life of the lead-acid battery 100% ₀₀₀ made by the embodiment of the invention is greatly improved, wherein the embodiment 1 reaches 4 ₇₆ times, the embodiment 2 reaches 485 times, and the embodiment 3 reaches 51 ₇ times, the embodiment 4 reached 508 times, and Example 5 reached 503 times, while the prior art only had about 100 times.

Claims

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5 Claims