Method for manufacturing of substrate for lead acid battery, powder mixture for manufacturing the same and substrate for the same

Patent metadata

Field	Value
Publication number	US-10333150-B2
Application number	US-201615092981-A
Country	US
Kind code	B2
Filing date	Apr 7, 2016
Priority date	Dec 1, 2015
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

A method for manufacturing a substrate for a lead acid battery includes manufacturing a powder mixture by mixing lead powder and carbon powder and manufacturing a substrate by compress-molding the powder mixture. 85 wt % to 95 wt % of the lead powder and 5 wt % to 15 wt % of the carbon powder are mixed, based on 100 wt % of the powder mixture.

First claim

What is claimed is:

1. A powder mixture for manufacturing a substrate for a lead acid battery, comprising 85 wt % to 95 wt % of lead powder and 5 wt % to 15 wt % of carbon powder,
wherein the lead powder comprises lead powder having a particle diameter of 10 μm to 50 μm and lead powder having a particle diameter of 200 μm to 250 μm, and
wherein the lead powder comprises 40 wt % to 75 wt % of lead powder having a particle diameter of 10 μm to 50 μm and 25 wt % to 60 wt % of lead powder having a particle diameter of 200 μm to 250 μm, based on 100 wt % of the lead powder.

2. The powder mixture of claim 1 , wherein the lead powder is Pb—Sn—Ca alloy powder.

3. The powder mixture of claim 1 , wherein the carbon powder comprises graphite, carbon black, or carbon nanotube.

4. The powder mixture of claim 1 , wherein the carbon powder has an average particle diameter of 1 μm to 5 μm.

5. A substrate for a lead acid battery, the substrate comprising 85 wt % to 95 wt % of lead and 5 wt % to 15 wt % of carbon,
wherein hardness of the substrate is 13 Hv to 18 Hv and elongation of the substrate is 3% to 5.5%.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Jin Jae Eun

Classifications

• H01M4/82 Primary

  Multi-step processes for manufacturing carriers for lead-acid accumulators · CPC title

• B22F3/00

  Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor {; Presses and furnaces} · CPC title

• B22F1/12

  Metallic powder containing non-metallic particles (containing lubricating or binding agents or organic material B22F1/10) · CPC title

• B22F1/052

  characterised by a mixture of particles of different sizes or by the particle size distribution · CPC title

• H01M4/663

  containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres · CPC title