US 12,278,329 B2
Lithium-ion battery having desirable safety performance
Tao Tao, Ningde (CN); and Ming Liang Mo, Ningde (CN)
Assigned to NINGDE AMPEREX TECHNOLOGY LIMITED, Fujian (CN)
Filed by NINGDE AMPEREX TECHNOLOGY LIMITED, Ningde (CN)
Filed on Dec. 7, 2023, as Appl. No. 18/532,838.
Application 18/532,838 is a continuation of application No. 17/746,755, filed on May 17, 2022, granted, now 11,923,498.
Application 17/746,755 is a continuation of application No. 17/407,081, filed on Aug. 19, 2021.
Application 17/407,081 is a continuation of application No. 16/113,938, filed on Aug. 27, 2018, abandoned.
Application 16/113,938 is a continuation of application No. 14/596,873, filed on Jan. 14, 2015, granted, now 10,541,441, issued on Jan. 21, 2020.
Claims priority of application No. 201420030319.4 (CN), filed on Jan. 17, 2014.
Prior Publication US 2024/0113323 A1, Apr. 4, 2024
Int. Cl. H01M 10/0525 (2010.01); H01M 4/13 (2010.01); H01M 4/139 (2010.01); H01M 10/058 (2010.01); H01M 50/536 (2021.01); H01M 50/538 (2021.01)
CPC H01M 10/0525 (2013.01) [H01M 4/13 (2013.01); H01M 4/139 (2013.01); H01M 10/058 (2013.01); H01M 50/536 (2021.01); H01M 50/538 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A lithium-ion battery, comprising:
a positive electrode comprising a positive current collector and a positive electrode active material layer containing lithium cobalt oxide, wherein the positive electrode active material layer is formed on the positive current collector, the positive electrode active material layer is provided with a first recess accommodating a positive lead being coupled with the positive current collector; and the positive lead is disposed on a surface of the positive current collector facing a center of the battery;
a negative electrode comprising a negative current collector and a negative electrode active material layer containing graphite or silicon, wherein the negative electrode active material layer is formed on the negative current collector, the negative electrode active material layer being provided with a second recess accommodating a negative lead being coupled with the negative current collector; and the negative lead is disposed on a first surface of the negative current collector; the first surface of the negative current collector being facing away from the center of the battery and a second surface of the negative current collector opposite to the first surface of the negative current collector, the second surface of the negative current collector being facing towards the center of the battery; wherein the second surface of the negative current collector is free of the negative electrode active material layer at a position where the negative lead is disposed on the negative current collector;
a separator disposed between the positive electrode and the negative electrode; and
an electrolyte.
 
11. A lithium ion battery, comprising:
a positive electrode, comprising a positive current collector and a positive electrode active material layer being formed on the positive current collector, wherein the positive electrode active material layer is provided with a first recess accommodating a positive lead being coupled with the positive current collector; and the positive lead is disposed on a surface of the positive current collector facing a center of the battery;
a negative electrode comprising a negative current collector and a negative electrode active material layer containing graphite or silicon, wherein the negative electrode active material layer is formed on the negative current collector, the negative electrode active material layer being provided with a second recess accommodating a negative lead being coupled with the negative current collector; and the negative lead is disposed on a first surface of the negative current collector; the first surface of the negative current collector being facing away from the center of the battery and a second surface of the negative current collector opposite to the first surface of the negative current collector, the second surface of the negative current collector being facing towards the center of the battery; wherein the second surface of the negative current collector is free of the negative electrode active material layer at a position where the negative lead is disposed on the negative current collector;
a separator disposed between the positive electrode and the negative electrode; and
an electrolyte.