A simulation method for the design and inspection of auxiliary lead-acid batteries based on electrochemical principles

A lead-acid battery, simulation method technology, applied in electrochemical generators, fuel cells, fuel cell control and other directions, can solve the problems of high computational cost, waste of computational resources, etc., to speed up the calculation speed, model accuracy and universality High performance and cost reduction effect

Active Publication Date: 2021-10-29
ZHAOQING LEOCH BATTERY TECH
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Problems solved by technology

[0004] However, for flooded batteries, which are mostly used in automobile start-stop batteries, using 2D and 3D models to simulate start-stop batteries requires high computational costs and wastes computational resources.

Method used

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  • A simulation method for the design and inspection of auxiliary lead-acid batteries based on electrochemical principles
  • A simulation method for the design and inspection of auxiliary lead-acid batteries based on electrochemical principles
  • A simulation method for the design and inspection of auxiliary lead-acid batteries based on electrochemical principles

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specific Embodiment

[0280] A simulation method for the design and inspection of auxiliary lead-acid batteries based on electrochemical principles, taking the capacity test of a flooded L2 lead-acid battery with a rated capacity of 60Ah (3A constant current discharge at 25°C to a voltage of 10.5V) as an example , including the following steps:

[0281] 1) Geometric model construction: such as Figure 7 According to the design parameters of the L2 type lead-acid battery, the thickness of the positive electrode is 0.0445cm, the thickness of the electrolyte tank is 0.32cm, the thickness of the diaphragm is 0.025cm, and the thickness of the negative electrode is 0.0434cm, and the one-dimensional model is established in order;

[0282] 2) Assignment of material properties: according to the composition of the battery, the material properties of the geometric model are assigned, and the positive electrode is PbO 2 , the conductivity is 80S / cm, the negative plate is Pb, and the conductivity is 47000S / cm....

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Abstract

The invention discloses a simulation method for auxiliary lead-acid battery design and inspection based on electrochemical principles, comprising the following steps: a geometric model construction step; a material property assignment step; a physical field setting step; a boundary setting step: setting boundary conditions; a calculation step : Use the Newton iterative method to calculate the battery state change during the charging and discharging process. The invention can reduce the cost. Using the invention to design and test the performance of the lead-acid battery, compared with charging and discharging the real battery, the time cost and the economic cost are both effectively reduced. The invention has a wide application range, and the invention can be applied to the simulation of any lead-acid battery with known design parameters, and only needs to change the simulation parameters according to the design parameters, without repeating modeling. The invention can reduce calculation time and speed up calculation, is more in line with the actual situation of the liquid-rich battery, and has higher accuracy and universality of the model.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a simulation method for assisting the design and inspection of lead-acid batteries based on electrochemical principles. Background technique [0002] Since the invention of the lead-acid battery by the Frenchman Plante in 1859, the lead-acid battery has been one of the most important secondary batteries for 160 years. Battery, solar energy, wind energy generator energy storage battery, backup power supply for communication equipment and emergency lighting equipment. The advantages of cheap lead-acid batteries, perfect production technology, and easy recycling make lead-acid batteries occupy an irreplaceable position in the battery field. [0003] Since the research and development and testing of lead-acid batteries requires actual charging and discharging experiments on the batteries, which has the disadvantages of time-consuming and high cost, the research on the si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04298H01M8/04992
CPCH01M8/04305H01M8/04992Y02E60/50
Inventor 李爱军董李张树祥邵勤思颜蔚
Owner ZHAOQING LEOCH BATTERY TECH
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