Lead-acid battery

Patent metadata

Field	Value
Publication number	US-10096862-B2
Application number	US-201415039525-A
Country	US
Kind code	B2
Filing date	Nov 10, 2014
Priority date	Nov 29, 2013
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

A microporous acid-resistant resin separator has a total pore volume ratio of 55% or more and less than 75%. A negative electrode plate is made of an electrode material containing a bisphenol condensate. Thereby, a lead-acid battery can be obtained, which reduces the softening of a positive electrode material and has excellent low-temperature high rate discharge performance.

First claim

The invention claimed is:

1. A lead-acid battery comprising:
a positive electrode plate;
a negative electrode plate; and
a microporous resin separator,
wherein the separator has a total pore volume ratio of 55% or more and less than 75%, and
the negative electrode plate is made of a negative electrode material containing 0.075 mass % or more and less than 0.2 mass % of a bisphenol condensate.

2. The lead-acid battery according to claim 1 , wherein the electrode material of the negative electrode plate contains 0.10 mass % or more and less than 0.2 mass % of the bisphenol condensate.

3. The lead-acid battery according to claim 1 , wherein the electrode material of the negative electrode plate contains 0.075 mass % or more and less than 0.175 mass % of the bisphenol condensate.

4. The lead-acid battery according to claim 1 , wherein the electrode material of the negative electrode plate contains 0.10 mass % or more and less than 0.175 mass % of the bisphenol condensate.

5. The lead-acid battery according to claim 1 , wherein the separator has a total pore volume ratio of 65% or more and less than 75%.

6. The lead-acid battery according to claim 1 , wherein the positive electrode plate includes a current collector having four sides each having a frame.

7. The lead-acid battery according to claim 1 , wherein the electrode material of the negative electrode plate contains a carbon-based material.

8. The lead-acid battery according to claim 1 , wherein the negative electrode material of the negative electrode plate substantially contains no polycarboxylic acid compound.

9. The lead-acid battery according to claim 1 , wherein the lead-acid battery is used for a charge control vehicle or an idling stop vehicle.

10. A charge control vehicle or an idling stop vehicle comprising the lead-acid battery according to claim 1 .

11. The lead-acid battery according to claim 1 , wherein the negative electrode material comprises 0.025 mass % or less of lignin.

12. The lead-acid battery according to claim 1 , wherein the negative electrode material comprises no lignin.

13. The lead-acid battery according to claim 1 , wherein the negative electrode material comprises 0.1 to 0.4 mass % of carbon black.

14. The lead-acid battery according to claim 1 , wherein a molecular weight of the bisphenol condensate is about 4,000 to about 250,000.

15. The lead-acid battery according to claim 1 , wherein the negative electrode material comprises less than 0.005% of a polycarboxylic acid compound.

16. The lead-acid battery according to claim 1 , wherein the negative electrode material comprises carbon black, barium sulfate, and a synthetic fiber reinforcing material.

Assignees

• Gs Yuasa Int Ltd

Inventors

• Motoi Ikumi

Classifications

• H01M50/417

  Polyolefins · CPC title

• H01M50/491

  Porosity · CPC title

• H01M4/628

  Inhibitors, e.g. gassing inhibitors, corrosion inhibitors · CPC title

• Y02T10/7016

  Cross-Sectional Technologies · mapped topic

• H01M4/62

  Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title