US 2026/0221523 A1 · WINDING CORE CENTRAL PIN AND BATTERY

Abstract

A winding core central pin is provided and includes a support rod and a plurality of support ribs. The support rod is cylindrical. The plurality of support ribs is arranged along a circumferential direction of an outer wall of the support rod and have an equal inclination angle with respect to the outer wall of the support rod. The plurality of support ribs is configured to abut against an inner wall of a center hole of a winding core. An avoidance space is defined between every two adjacent support ribs of the plurality of support ribs to allow an electrolyte to flow through the avoidance space.

Claims20

Dependent claims

A winding core comprising:

a central pin including a support rod and a plurality of support ribs;
the support rod being cylindrical;
the plurality of support ribs being arranged along a circumferential direction of an outer wall of the support rod and having an equal inclination angle with respect to the outer wall of the support rod;
the plurality of support ribs is configured to abut against an inner wall of a center hole of the winding core;
and
an avoidance space being defined between two adjacent support ribs of the plurality of support ribs to allow an electrolyte to flow through the avoidance space.

3 more elements

A battery comprising:

a housing;
a winding core being arranged inside the housing;
a winding core central pin comprising
a support rod and a plurality of support ribs,
the support rod being cylindrical,
the plurality of support ribs being arranged along a circumferential direction of an outer wall of the support rod and having an equal inclination angle with respect to the outer wall of the support rod,
the plurality of support ribs being configured to abut against an inner wall of a center hole of a winding core, and
an avoidance space being defined between every two adjacent support ribs of the plurality of support ribs to allow an electrolyte to flow through the avoidance space;
and
the winding core central pin is inserted in the center hole of the winding core.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application

19/573,002Filed 20 Mar 2026

Priority

CN 202322561513.720 Sep 2023

Published

30 Jul 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

H01M 10/0587
Construction or manufacture: of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes…
H01M 10/4214
Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells: arrangements for moving electrodes or electrolyte
H01M 10/0431
Construction or manufacture in general: cells with wound or folded electrodes
Y02E 60/10
Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation: energy storage using batteries

Winding core central pin and battery

Life of this patent

Winding core central pin and battery

Life of this patent

Abstract

Claims20