Lead-acid battery, negative electrode plate thereof and method for producing lead-acid battery

Patent metadata

Field	Value
Publication number	US-2016240844-A1
Application number	US-201615040508-A
Country	US
Kind code	A1
Filing date	Feb 10, 2016
Priority date	Feb 12, 2015
Publication date	Aug 18, 2016
Grant date	—

Abstract

A lead-acid battery includes a negative electrode plate; a positive electrode plate; and an electrolyte solution, the negative electrode plate including a negative electrode material containing an inorganic sulfate and an anti-shrink agent, the inorganic sulfate having a 111 crystal plane or an average secondary particle size of 3.8 μm or more, the anti-shrink agent being adsorbed to the inorganic sulfate.

First claim

1 . A lead-acid battery comprising:
a negative electrode plate; a positive electrode plate; and an electrolyte solution, wherein the negative electrode plate includes a negative electrode material containing an inorganic sulfate and an anti-shrink agent, the inorganic sulfate has a 111 crystal plane, and the anti-shrink agent is adsorbed to the inorganic sulfate.

2 . The lead-acid battery according to claim 1 , wherein the amount of the anti-shrink agent adsorbed to the inorganic sulfate is 15 g/100 g or more.

3 . A lead-acid battery comprising:
a negative electrode plate; a positive electrode plate; and an electrolyte solution, wherein the negative electrode plate includes a negative electrode material containing an inorganic sulfate and an anti-shrink agent, and the inorganic sulfate has an average secondary particle size of 3.8 μm or more.

4 . The lead-acid battery according to claim 1 , wherein the anti-shrink agent in the negative electrode material is an organic anti-shrink agent.

5 . The lead-acid battery according to claim 1 , wherein the amount of the anti-shrink agent adsorbed to the inorganic sulfate is not less than 15 g/100 g and not more than 21 g/100 g.

6 . The lead-acid battery according to claim 1 , wherein the amount of the anti-shrink agent adsorbed to the inorganic sulfate is not less than 17 g/100 g and not more than 21 g/100 g.

7 . The lead-acid battery according to claim 1 , wherein the amount of the anti-shrink agent adsorbed to the inorganic sulfate is not less than 15 g/100 g and not more than 19 g/100 g.

8 . The lead-acid battery according to claim 1 , wherein the amount of the anti-shrink agent adsorbed to the inorganic sulfate is not less than 17 g/100 g and not more than 19 g/100 g.

9 . The lead-acid battery according to claim 1 , wherein the content of the inorganic sulfate in the negative electrode material is not less than 0.4 mass % and not more than 1.6 mass %.

10 . The lead-acid battery according to claim 1 , wherein the content of the inorganic sulfate in the negative electrode material is not less than 0.4 mass % and not more than 1.5 mass %.

11 . The lead-acid battery according to claim 1 , wherein the content of the inorganic sulfate in the negative electrode material is not less than 0.4 mass % and not more than 1.2 mass %.

12 . The lead-acid battery according to claim 1 , wherein the content of the inorganic sulfate in the negative electrode material is not less than 0.6 mass % and not more than 1.0 mass %.

13 . The lead-acid battery according to claim 1 , wherein the content of the anti-shrink agent in the negative electrode material is not less than 0.03 mass % and not more than 0.25 mass %.

14 . The lead-acid battery according to claim 1 , wherein the content of the anti-shrink agent in the negative electrode material is not less than 0.05 mass % and not more than 0.20 mass %.

15 . The lead-acid battery according to claim 1 , wherein the anti-shrink agent in the negative electrode material is an organic synthetic anti-shrink agent.

16 . The lead-acid battery according to claim 1 , wherein the anti-shrink agent in the negative electrode material is a bisphenol condensation product.

17 . The lead-acid battery according to claim 1 , wherein the inorganic sulfate in the negative electrode material is barium sulfate.

18 . A method for producing a lead-acid battery, the method comprising:
adsorbing an anti-shrink agent to an inorganic sulfate having a 111 crystal plane in an amount of 15 g/100 g or more; and filling a negative electrode current collector with a paste, which contains the inorganic sulfate with the anti-shrink agent adsorbed thereto, and a lead powder, to produce a negative electrode plate.

19 . The method for producing a lead-acid battery, according to claim 18 , wherein the inorganic sulfate is barium sulfate, and the anti-shrink agent is a bisphenol condensation product.

Assignees

• Gs Yuasa Int Ltd

Inventors

• Motoi Ikumi

Classifications

• H01M4/627

  Expanders for lead-acid accumulators · CPC title

• H01M4/622

  being polymers · CPC title

• H01M4/0416 Primary

  involving impregnation with a solution, dispersion, paste or dry powder (H01M4/0438 takes precedence) · CPC title

• H01M4/62 Primary

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

• H01M10/12

  Construction or manufacture · CPC title