US 12,009,483 B2Granted

Secondary battery cell and winding formation system thereof

AssigneeNingde Amperex Technology Limited

InventorsPeipei Guo, Yi Zhao, Ping He, Hongxin Fang, Wenqiang Cheng

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Abstract

A secondary battery cell includes an anode electrode plate, an anode electrode tab, a cathode electrode plate, a cathode electrode tab and a separator. The secondary battery cell winding formation system includes a working platform, a winding mechanism, an anode electrode plate unwinding roller, an anode electrode plate cleaning mechanism, an anode electrode plate die-cutting mechanism, an anode electrode tab supply mechanism, an anode electrode tab connection mechanism, an anode electrode plate convey mechanism, a cathode electrode plate unwinding roller, a cathode electrode plate cleaning mechanism, a cathode electrode plate die-cutting mechanism, a cathode electrode tab supply mechanism a cathode electrode tab connection mechanism, a cathode electrode plate convey mechanism, a first separator unwinding roller, a second separator unwinding roller, a first separator convey mechanism and a second separator convey mechanism.

Claims18

Dependent claims

A secondary battery, comprising:

a first electrode tab;
a first electrode plate, comprising:
a first current collector;
and
a first active substance disposed on a first surface of the first current collector and a second surface of the first current collector, wherein the second surface is opposite to the first surface;
a first electrode tab receiving groove defined by an exposed portion of the first surface of the first current collector and the first active substance on a periphery of the first electrode tab receiving groove, the first electrode tab receiving groove receiving the first electrode tab, wherein the first electrode tab is electrically connected with the first current collector through the first electrode tab receiving groove;
and
a first electrode plate notch disposed on a side edge of the first electrode tab receiving groove and extending through the second surface and the first surface of the first current collector, a first dimension of the first electrode plate notch is greater than a dimension of the first electrode tab, wherein the first dimension of the first electrode plate notch and the dimension of the first electrode tab are defined along a length direction of the first electrode plate.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/710,936Filed 31 Mar 2022 · continuation
Priority: 31 Aug 2015
Published: US 2022/0328941 A113 Oct 2022
Granted: 11 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

H01M 10/0585
Construction or manufacture: of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and…
H01M 10/0409
Machines for assembling batteries: for cells with wound electrodes
H01M 10/0431
Construction or manufacture in general: cells with wound or folded electrodes
H01M 10/0525
Li-accumulators: rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries

Family

PCT/CN2015/088638Parent of this continuation · filed 31 Aug 2015
Application15/908,327Parent of this continuation · filed 28 Feb 2018
US 2022/0328941 A1Pre-grant publication · published 13 Oct 2022
US 11,329,352 B2Parent of this continuation
US 2018/0190963 A1Published application
US 12,009,483 B2This patent

From the US filing history. Foreign family members aren’t listed.

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