US 2019/0355986 A1Published application

Battery cell with increased tab area and method and apparatus for manufacturing same

AssigneeGM Global Technology Operations LLC

InventorsSherman H. Zeng, Chih-Cheng Hsu

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Abstract

A battery includes a first mono cell formed from a first electrode foil having a first body and a first tab, and a first coating. The first body has long edges and short edges, and a length-to-width ratio of the first body is at least five. The first tab extends from one of the long edges of the first body entirely between one of the short edges a midpoint of the long edge. A second electrode foil has similar structure to the first electrode foil and coating, but a second tab is aligned opposite the first tab along the short edges. A second mono cell has similar structure. A third tab and a fourth tab of the second mono cell are on an opposing side of the midpoint of the long edges from the first tab and the second tab.

Claims11

Dependent claims

A battery module, comprising:

a first mono cell, including:
a first electrode foil, including:
a first body having long edges defining a length, and short edges defining a width, wherein a ratio of the length to width is at least five;
and
a first tab extending from one of the long edges, entirely between one of the short edges and a midpoint of the long edge, and having a first tab length of at least 45 percent of the length of the first body;
a first coating formed of one of an anodic material and a cathodic material substantially covering the first body of the first electrode foil;
a second electrode foil, including:
a second body having long edges defining a length, and short edges defining a width, wherein a ratio of the length to width is at least five;
and
a second tab extending from one of the long edges, entirely between one of the short edges and a midpoint of the long edge, and having a second tab length of at least 45 percent of the length of the second body,
wherein the second tab of the second electrode foil is opposite the first tab of the first electrode foil;
and
a second coating formed of the other of the anodic material and the cathodic material substantially covering the second body of the second electrode foil;
and
a second mono cell, including:
a third electrode foil, including:
a third body having long edges defining a length, and short edges defining a width, wherein a ratio of the length to width is at least five;
and
a third tab extending from one of the long edges, entirely between one of the short edges and a midpoint of the long edge, and having a third tab length of at least 45 percent of the length of the third body;
a third coating formed of one of an anodic material and a cathodic material substantially covering the third body of the third electrode foil;
a fourth electrode foil, including:
a fourth body having long edges defining a length, and short edges defining a width, wherein a ratio of the length to width is at least five;
and
a fourth tab extending from one of the long edges, entirely between one of the short edges and a midpoint of the long edge, and having a fourth tab length of at least 45 percent of the length of the fourth body,
wherein the fourth tab of the fourth electrode foil is opposite the third tab of the third electrode foil;
and
a fourth coating formed of the other of the anodic material and the cathodic material substantially covering the fourth body of the fourth electrode foil,
wherein the first tab of the first mono cell and the third tab of the second mono cell are on opposing sides of the midpoint of the long edge of the respective first body and third body, and wherein the second tab of the first mono cell and the fourth tab of the second mono cell are on opposing sides of the midpoint of the long edge of the respective second body and fourth body.

25 more elements

A powertrain, comprising:

a plurality of first mono cells forming a portion of a battery pack, wherein each of the first mono cells includes:
a first electrode foil, having a first body with long edges defining a length, and short edges defining a width, wherein a ratio of the length to width is at least five, and a first tab extending from one of the long edges, wherein the first tab is entirely between one of the short edges and a midpoint of the long edge and a first tab length of the first tab is at least 45 percent of the length of the first body;
a first coating formed of a cathode material and substantially covering the first body of the first electrode foil;
a second electrode foil, having a second body with long edges defining a length, and short edges defining a width, wherein a ratio of the length to width is at least five, and a second tab extending from one of the long edges, wherein the second tab is entirely between one of the short edges and a midpoint of the long edge and a second tab length of the second tab is at least 45 percent of the length of the second body, and wherein the second tab of the second electrode foil is opposite the first tab of the first electrode foil;
and
a second coating formed of an anode material and substantially covering the second body of the second electrode foil;
a plurality of second mono cells forming a portion of the battery pack, wherein each of the second mono cells includes:
a third electrode foil, having a third body with long edges defining a length, and short edges defining a width, wherein a ratio of the length to width is at least five, and a third tab extending from one of the long edges, wherein the third tab is entirely between one of the short edges and a midpoint of the long edge and a third tab length of the third tab is at least 45 percent of the length of the third body;
a third coating formed of the cathode material and substantially covering the third body of the third electrode foil;
a fourth electrode foil, having a fourth body with long edges defining a length, and short edges defining a width, wherein a ratio of the length to width is at least five, and a fourth tab extending from one of the long edges, wherein the fourth tab is entirely between one of the short edges and a midpoint of the long edge and a fourth tab length of the fourth tab is at least 45 percent of the length of the fourth body, and wherein the fourth tab of the fourth electrode foil is opposite the third tab of the third electrode foil;
and
a fourth coating formed of the anode material and substantially covering the fourth body of the fourth electrode foil,
wherein the first tab of the first mono cells and the third tab of the second mono cells are on opposing sides of the midpoint of the long edge of the respective first body and third body, and wherein the second tab of the first mono cells and the fourth tab of the second mono cells are on opposing sides of the midpoint of the long edge of the respective second body and fourth body;
a motor/generator configured to convert electrical energy from the battery pack to kinetic energy and configured to convert kinetic energy into electrical energy for storage in the battery pack;
and
a powertrain control module configured to control transfer of electrical energy between the motor/generator and the battery pack.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/529,105Filed 1 Aug 2019
Priority: 17 Jul 2017
Published: 21 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

H01M 4/366
Composites: as layered products
B60L 50/64
Using power supplied by batteries: constructional details of batteries specially adapted for electric vehicles
B60L 53/24
Characterised by converters located in the vehicle: using the vehicle's propulsion converter for charging
H01M 4/0404
Methods of deposition of the material: by coating on electrode collectors

Family

Application15/651,354Division · filed 17 Jul 2017
Application16/529,105Division
US 10,431,816 B2Related patent
US 11,171,329 B2Related patent
US 2019/0020018 A1Published application
US 2019/0355986 A1This patent

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

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