Battery separators and lead-acid batteries

A battery separator, lead-acid battery technology, applied in secondary batteries, lead-acid batteries, battery pack components, etc., can solve the problems of uneven acid filling rate, high filling time, etc.

Pending Publication Date: 2021-08-27
HOLLINGSWORTH VOSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many such separators, particularly for AGM batteries, are undesirable because they exhibit high acid filling times and non-uniform acid filling rates

Method used

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  • Battery separators and lead-acid batteries
  • Battery separators and lead-acid batteries
  • Battery separators and lead-acid batteries

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0123] This example describes the production of an embossed separator suitable for use in AGM batteries and compares the physical properties of an embossed separator to that of a separator formed from the same furnish.

[0124] Three partitions were formed by a wet-laid process from the furnish shown in Table 1: one partition lacked protrusions; one partition included continuous protrusions in the form of straight lines at an angle of 45° to the machine direction; and one partition The plate comprises discrete protrusions in the form of ovals having a length of 27 mm and a width of 4 mm. In separators comprising projections, the projections are formed by passing the wet-laid layer formed from the furnish while still wet through two press rolls. One of these press rolls had a raised pattern on the surface of the press roll corresponding to the pattern embossed into the wet-laid layer. The wet-laid layer is then dried.

[0125] After fabrication, each separator was laminated b...

example 2

[0133] This example describes the production of a second embossed separator suitable for use in AGM batteries, and compares the physical properties of the second embossed separator to that of a separator formed from the same formulation.

[0134]Two separators were formed by a wet-laid process from the furnishes shown in Table 3: one separator lacking protrusions; and one separator comprising continuous protrusions in the form of straight lines at an angle of 45° to the machine direction. In separators comprising projections, the projections are formed by passing the wet-laid layer formed from the furnish while still wet through two press rolls. One of the press rolls had a raised pattern on the surface of the press roll corresponding to the pattern embossed into the wet-laid layer. The wet-laid layer is then dried.

[0135] After fabrication, each separator was laminated between two clear poly(carbonate) plates by the process described in Example 1, compressed, and filled wi...

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Abstract

Battery separators and lead-acid batteries are generally provided. The battery separator includes a protrusion, and the lead-acid battery includes the battery separator. The protrusions may take the form of indentations formed in the surface of the battery separator, such as indentations formed by an imprint process. The embossments may include intersections with the first and second edges of thebattery separator, which may be the same or different.

Description

technical field [0001] The present invention relates generally to battery separators, and more particularly to battery separators including a plurality of protrusions. Background technique [0002] Separators are commonly used in lead-acid batteries to separate the battery plates in lead-acid batteries. However, many of these separators, particularly for AGM batteries, are undesirable because they exhibit high acid fill times and non-uniform acid fill rates. Accordingly, improved separator designs are needed. Contents of the invention [0003] A battery separator, related components, and related methods are generally described. [0004] In some embodiments, a battery separator is provided. The battery separator includes a fiber web including a plurality of glass fibers. The fiber web includes a first surface. The first surface is embossed with a plurality of protrusions. The plurality of protrusions includes protrusions each comprising at least a first intersection w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/44H01M50/463H01M50/437H01M50/403H01M50/414H01M10/06
CPCH01M10/06H01M50/406H01M50/414H01M50/437H01M50/44H01M50/446H01M50/449H01M50/463H01M50/489H01M50/494H01M10/121Y02E60/10Y02P70/50H01M10/14
Inventor 蒋志平
Owner HOLLINGSWORTH VOSE
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