Netting casting-type lead-acid battery positive electrode grid and fabrication method thereof

A lead-acid battery and anode plate technology, which is applied to battery electrodes, electrode carriers/current collectors, circuits, etc., can solve the problems of easy elongation and deformation of the anode grid, achieve high-rate discharge performance, increase service life, and improve specific energy effect

Inactive Publication Date: 2019-09-10
周诚悦 +1
View PDF8 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a netted cast type lead-acid battery anode grid and its preparation method, which can effectively solve the problem that the existing anode grid is easy to elongate and deform

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
  • Netting casting-type lead-acid battery positive electrode grid and fabrication method thereof
  • Netting casting-type lead-acid battery positive electrode grid and fabrication method thereof
  • Netting casting-type lead-acid battery positive electrode grid and fabrication method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of the anode grid of the braided cast type lead-acid battery comprises the following steps:

[0026] (1) Twisting carbon fibers 3 with a diameter of 4 μm to prepare a carbon fiber bundle 2 with a diameter of 8 μm, and then arranging at least two carbon fiber bundles 2 to form a main carbon fiber bundle with a thickness of 8 μm, which is ready for use;

[0027] (2) Using the main carbon fiber bundle as the material, prepare a rectangular main frame body 5, then weave 14 carbon fiber bundles 2 at equal intervals along the longitudinal direction in the main frame body 5, and continue to weave two carbon fiber bundles 2 along the longitudinal direction. The longitudinal main carbon fiber bundle 6 of the gap forms the first longitudinal skeleton, and then continues to weave the nth longitudinal skeleton in the main frame body 5 according to the weaving method of the first longitudinal skeleton (in this embodiment, the value of n is 3, refer to figure ...

Embodiment 2

[0032] Such as figure 1 As shown, the anode grid prepared by the above method includes a rectangular frame 1 made of main carbon fiber bundles with a thickness of 3-50 μm.

[0033] Such as image 3 with Figure 4 As shown, the main carbon fiber bundle is made of at least two parallel carbon fiber bundles 2 with a diameter of 3-50 μm, and the carbon fiber bundle 2 is formed by twisting several carbon fibers 3 .

[0034] Such as figure 1 As shown, in the frame body 1, 14 carbon fiber bundles 2 are fixed at equal intervals by welding along its longitudinal direction. The carbon fiber bundles 2 interlaced with each other make the inside of the frame body 1 in a grid shape.

[0035] Such as figure 1 As shown, tabs 9 made of lead-calcium alloy are fixed by welding at the end of the frame body 1 , and lead-calcium alloy layers 4 are coated on the frame body 1 and the carbon fiber bundles 2 .

Embodiment 3

[0037] 1. Under the conditions of normal temperature and pressure, the grid prepared in Example 1 and the grid made of pure lead material (pure lead grid) were subjected to a full charge and discharge test for two months. After the test, The extension length of the grid prepared by the present application is only 0.09-0.21 mm, while the extension length of the pure lead grid reaches 1.68-2.03 mm, which shows that the grid prepared by the method of the present invention has high strength and excellent deformation resistance.

[0038] 2. Under the conditions of normal temperature and pressure, the grid prepared in Example 1 and the surface of the grid (pure lead grid) made of pure lead material are coated with a paste layer, and then fully charged and discharged 150 times respectively Test, after the test, the paste applied on the surface of the grid prepared by the present application did not change, while the paste layer on the surface of the pure lead grid was "muddy" and coll...

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
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a netting casting-type lead-acid battery positive electrode grid and a fabrication method thereof. The method comprises the following steps of (1) twisting carbon fibers to prepare carbon fiber bundles, and arranging at least two carbon fiber bundles in parallel to form a main carbon fiber bundle; (2) fabricating a main frame from the main carbon fiber bundle, respectivelyarranging carbon fiber bundles, which are arranged in a staggered way, in the main frame along a longitudinal direction and a transverse direction, and respectively arranging two main carbon fiber bundles with gaps along the longitudinal direction and the transverse direction again to fabricate a net plate; and (4) repeating the step (3), continuing to fabricate the net plate in a remaining regionin the main frame until the main frame is filled, placing the net plate in a die, and cutting the casted and molten lead-calcium alloy liquid after cooling formation, thereby fabricating the positiveelectrode grid. The positive electrode grid fabricated by the method is small in deformation quantity, good in conductivity and low in resistance, and high-rate discharging performance of the batterycan be improved.

Description

technical field [0001] The invention belongs to the technical field of lead-acid batteries, and in particular relates to a net-woven casting type lead-acid battery anode grid and a preparation method thereof. Background technique [0002] Lead-acid battery is a kind of chemical power source, and it is the most mature secondary battery at present. Since its invention in 1859, it is still the world's largest and most versatile chemical power source. Lead-acid batteries have the advantages of high cost performance, good safety and mature technology; they are not only used in starting power and lighting for automobiles, tractors, diesel engines and ships; they are also used in power sources for low-speed vehicles, including electric bicycles, tricycles and four-wheelers. wheeler etc. As the most important inactive component in lead-acid battery, the grid is mainly used to support the active material, conduct current and make the current distribution even. The selection of grid...

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
IPC IPC(8): H01M4/66H01M4/68H01M4/73H01M4/84
CPCH01M4/685H01M4/666H01M4/663H01M4/73H01M4/84Y02E60/10
Inventor 周诚悦张列平
Owner 周诚悦
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap