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

Method for predicting service life of lead storage battery

A lead-acid battery and prediction method technology, applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of complex battery equivalent models and complex models, and achieve the effect of shortening the test cycle and strong universality

Inactive Publication Date: 2021-09-17
TIANNENG BATTERY GROUP
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above two methods need to build an effective battery system model. However, a battery system model needs to consider a large number of parameters. The increase in parameters makes the model complex, and the construction of the battery equivalent model also becomes complicated.

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
  • Method for predicting service life of lead storage battery
  • Method for predicting service life of lead storage battery
  • Method for predicting service life of lead storage battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Theta value and β-PbO of different types of lead-acid batteries at 0 cycle, 50 cycle and 100 cycle 2 The half-peak width is used for statistics, using theta value and β-PbO 2 The half-peak broadband is entered into the Scherrer formula to calculate the corresponding crystal size, and the results are shown in Table 1.

[0030] Table 1 β-PbO corresponding to different cycles of different types of lead-acid batteries 2 Crystal size and related parameters

[0031]

[0032] At the same time, the β-PbO 2 The crystal parameters and sizes of the experimental data are shown in Table 2.

[0033] Table 2 Corresponding β-PbO when different types of lead-acid batteries fail 2 Crystal size and related parameters

[0034]

[0035]

[0036] As shown in Table 2, it is found from the table that when the lead-acid battery cycle fails, β-PbO 2 The crystal size tends to

[0037] The corresponding data in Table 1 and Table 2 were curve-fitted and plotted to obtain figure 1...

Embodiment 2

[0040] Take a small-density 20Ah lead-acid battery, dissect it after formation, and get the positive plate; wash the positive plate first and then dry it, take the active material in the middle of the dried positive plate and grind it into powder, and use XRD to test the β-PbO in the active material 2 The half width B of the characteristic peak at θ = 25.4 degrees uses the formula Calculation of β-PbO 2 The crystal size of β-PbO is obtained by taking the half-peak width B of the three characteristic peaks to calculate the crystal size D. 2 The mean value of the crystal size as the corresponding crystal size at 0 cycles.

[0041]Divide small-density 20Ah lead-acid batteries into 4 groups for cyclic charging and discharging. The cyclic charging and discharging process is as follows: first charge at constant voltage 14.7V and limit current at 10A for 4 hours, and then discharge at 10A to 10.2V, which is recorded as a cycle and cycled separately 50 times, 100 times, 200 times...

Embodiment 3

[0050] Based on the mass of lead powder, the density of fiber 0.1%, stannous sulfate 0.1%, antimony trioxide 0.1%, water 10% and 4.5% is 1.4g / cm 3 Sulfuric acid, mixed uniformly and paste, the positive lead paste obtained is coated on the model 6-DZF-20 positive grid, to get the positive plate;

[0051] Based on the mass of lead powder, add 9.5% water and a density of 1.4g / cm 3 4.7% of sulfuric acid, 0.2% of lignin, 0.1% of humic acid, 0.2% of acetylene black, 0.7% of barium sulfate and 0.1% of fiber are mixed evenly, and the paste is carried out, and the negative lead paste obtained is coated on the model 6-DZF -20 On the negative grid, get the negative plate;

[0052] The above-mentioned positive plate and negative plate are assembled into a model of 6-DZF-20 lead storage battery.

[0053] The temperature of the electrolyte is 0℃~10℃, and the density is 1.25g / cm 3 And containing 1% sodium sulfate sulfuric acid solution, after adding 200mL of electrolyte to a single cell, ...

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

No PUM Login to View More

Abstract

The invention discloses a method for predicting the service life of a lead storage battery, and belongs to the technical field of lead storage batteries. The method the following steps: (1) taking a plurality of to-be-detected lead storage batteries with the same model, carrying out charge-discharge cycles for a plurality of times, and performing sampling in the charge-discharge cycle process to detect the crystal size of beta-PbO2 in the positive plate of the lead storage battery, performing linear fitting on the charge-discharge cycle number of the sampled lead storage battery and the crystal size of beta-PbO2 in the positive plate to obtain a relationship between the charge-discharge cycle number and the crystal size of beta-PbO2; and (2) according to the relationship between the charge-discharge cycle number and the beta-PbO2 crystal size obtained in the step (1), calculating the corresponding charge-discharge cycle number when the crystal size of beta-PbO2 is obtained, and taking the charge-discharge cycle number as the service life of the lead storage battery of the model. The method is high in universality, the test period of the cycle life of the battery is shortened, and a good technical means is provided for research, development and production control.

Description

technical field [0001] The invention belongs to the technical field of lead storage batteries, and in particular relates to a method for predicting the service life of lead storage batteries. Background technique [0002] With the development of the economy, there is a severe shortage of energy such as coal and oil, and the development and utilization of new energy has become the only way for sustainable development in all countries in the world. Therefore, the current research on electric power has become the mainstream research direction. As the core component of electric power products, the battery's development level directly affects the development of the electric power industry. Only power batteries with mature technology, low cost and high safety can make electric products widely developed. On the one hand, we should develop high-performance and long-life power batteries; on the other hand, we should also establish power battery life evaluation methods and life models...

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 Applications(China)
IPC IPC(8): G01R31/379G01R31/392
CPCG01R31/379G01R31/392
Inventor 郭志刚张天任陈勤忠许宝云邱华良李桂发王杜友邓成智张峰博刘玉
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