Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of impregnating solution, negative plate and battery for dry charge battery negative plate treatment

A battery negative electrode and impregnating liquid technology, which is applied to lead-acid battery electrodes, secondary battery charging/discharging, secondary batteries, etc., can solve problems such as long discharge time, increased internal resistance of the plate, and poor hydrophobicity of the negative plate. Achieve the effect of washing-free drying process, enhancing anti-oxidation and reducing waste of resources

Active Publication Date: 2022-06-21
TIANNENG BATTERY GROUP
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the negative plate treatment process in the above-mentioned patent documents are: a. The discharge time after formation is very long (continuing 20-30min), so that the active material formed by charging is transformed into a thicker lead sulfate layer, which not only significantly increases the thickness of the plate. The internal resistance also causes the negative plate to lose 5-10% of the charge, which virtually reduces the effective power of the plate and has a negative impact on the performance of the lead-acid battery; b. The "hydrophobicity" of the negative plate after boric acid treatment is poor , the negative electrode plate is in a bare state during the treatment process, and the sealing protection is not tight. It will still absorb moisture and oxygen in the air and be oxidized, which will affect the dry charge performance of the lead-acid battery; c. Because the impregnation process is carried out in a non-closed environment, And using a higher temperature, the acid mist formed by evaporation is harmful to human body; d. The drying time is 12-20 hours, and the production efficiency is low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of impregnating solution, negative plate and battery for dry charge battery negative plate treatment
  • A kind of impregnating solution, negative plate and battery for dry charge battery negative plate treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The negative plate is formed by the externalization process, and the charge and discharge currents of each stage are calculated according to the effective area of ​​the negative plate. The steps are as follows:

[0029] (1) Reverse charging: use 4~5mA / cm 2 The current reverse charge for 0.5h;

[0030] (2) Multi-stage charging: use 6mA / cm first 2 The current is charged for 1.0h; then use 12mA / cm 2 The current charged for 8.0h; then with 9mA / cm 2 The current is charged for 5.0h; the final charge is 6mA / cm 2 The current is charged for 4.5h;

[0031] (3) High current instantaneous discharge: at 50mA / cm 2 The current discharge 1.0min.

[0032] Pour butylated hydroxyanisole into the 25% ethanol solution by volume and stir for 6-8 minutes to prepare immersion solution 1. The mass ratio of butylated hydroxyanisole in immersion solution 1 to 25% ethanol by volume is 5:95.

[0033] The formed negative plates are placed at intervals of 1-2 mm, immersed in the above-mentione...

Embodiment 2

[0037] The negative plate is formed by the externalization process, and the charge and discharge currents of each stage are calculated according to the effective area of ​​the negative plate. The steps are as follows:

[0038] (1) Reverse charging: use 4~5mA / cm 2 The current reverse charge for 0.5h;

[0039] (2) Multi-stage charging: use 6mA / cm first 2 The current is charged for 1.0h; then use 12mA / cm 2 The current charged for 8.0h; then with 9mA / cm 2 The current is charged for 5.0h; the final charge is 6mA / cm 2 The current is charged for 4.5h;

[0040] (3) High current instantaneous discharge: at 50mA / cm 2 The current discharge 1.0min.

[0041] First, pour butylated hydroxyanisole into a 25% volume concentration ethanol solution and pre-stir for 1 to 3 minutes, then add citric acid, and continue stirring for 6 to 8 minutes to prepare dipping solution 2. In dipping solution 2, butylated hydroxyanisole, The mass ratio of 25% ethanol and citric acid was 5:0.5:94.5.

[00...

Embodiment 3

[0055] The negative plates that meet the requirements of dry load performance in Example 1 are assembled into lead-acid batteries, and the model of the lead-acid battery is 6-QA-60. After being placed in an environment with a humidity of not more than 80% for 12 months, the injection density into the lead-acid battery is 1.280±0.005g / cm 3 of sulfuric acid electrolyte, adjust the liquid level to the specified value, and discharge it with a current of 500A for 30s after standing for 20min. The standard requires that the discharge voltage within 30s is not lower than 7.2V. The voltage value of the lead-acid battery at 5s, 10s and 30s was tested and recorded. At the same time, the lead oxide content of the two negative plates was detected. The results are shown in Table 1. The electrolyte temperature before discharge is 37°C, and there is no acid overflow.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to an impregnating solution for treating negative plates of dry-charge batteries, negative plates and batteries, and belongs to the technical field of lead storage batteries. The purpose of the present invention is to provide a method for reducing the oxidation of the negative plate in the production process and later application process, increase the voltage of the dry-charged battery, and reduce the temperature of the electrolyte before the dry-charged battery is discharged. The components of the soaking liquid used in the present invention are as follows: by mass ratio, the ratio of butylhydroxyanisole: citric acid: ethanol with a volume concentration of 25% is 5: 0-0.5: 94.5-95. The lead-acid battery assembled with the negative electrode plate treated with the impregnating solution of the present invention has no obvious temperature rise in the electrolyte solution after adding acid for 20 minutes, and the dry-load starting performance of the lead-acid battery is better.

Description

technical field [0001] The invention belongs to the technical field of lead storage batteries, and in particular relates to an impregnating solution, a negative electrode plate and a battery for treating a negative electrode plate of a dry charge battery. Background technique [0002] As a cost-effective, stable and reliable DC power supply, lead-acid batteries have entered all aspects of our work and life, and are closely related to our lives. Dry-charged lead-acid batteries, because no electrolyte is added before use, the internal active material is in a dry state, and can usually store the charged charge obtained during the manufacturing process for a long time (at least one year). In addition, ordinary lead-acid batteries with sulfuric acid electrolyte are dangerous goods, which brings certain difficulties to storage, transportation and other activities. Therefore, dry-type charged lead-acid batteries still occupy a certain market in certain conditions and specific usag...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/16H01M10/12H01M10/44
CPCH01M4/16H01M10/12H01M10/446Y02P70/50
Inventor 陈群陈勤忠刘焯马有帅徐大勇刘克宇杨光华李越南周代辉邱华良高银王娟
Owner TIANNENG BATTERY GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com