Inventor
LI QUANKUN
CN73 patents
⚠️ This page may combine multiple inventors who share the name “LI QUANKUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
32 patentsUS10714721B2Jul 14, 2020
Secondary battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD2 citations73
US10418619B2Sep 17, 2019
Top cover of power battery and power battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD2 citations73
US10658647B2May 19, 2020
Secondary battery and battery module
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD2 citations72
US10205141B2Feb 12, 2019
Secondary battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD5 citations72
US11777184B2Oct 3, 2023
End cover assembly, secondary battery, battery module, apparatus, liquid-injection method and device
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD2 citations69
US12119503B2Oct 15, 2024
Cap assembly and secondary battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations62
US11777162B2Oct 3, 2023
Cap assembly and secondary battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations62
US11581610B2Feb 14, 2023
Battery box, battery cell, battery, and method and apparatus for preparing battery box
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations62
US11482761B2Oct 25, 2022
Secondary battery and battery module
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD1 citations62
US10763466B2Sep 1, 2020
Top cap assembly of a secondary battery, and secondary battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD1 citations62
US10665827B2May 26, 2020
Cap assembly for a second battery and second battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD1 citations62
US10629866B2Apr 21, 2020
Secondary battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD1 citations62
US10476048B2Nov 12, 2019
Secondary battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD1 citations62
US10199615B2Feb 5, 2019
Top cover structure of power battery and power battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD1 citations62
US10170734B2Jan 1, 2019
Top cover of power battery and power battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD1 citations62
US12113234B2Oct 8, 2024
Cover assembly of secondary battery and secondary battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations60
US11949119B2Apr 2, 2024
Cover assembly of secondary battery and secondary battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD1 citations60
US11916249B2Feb 27, 2024
Cover assembly of secondary battery and secondary battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations60
US11637348B2Apr 25, 2023
Cover assembly of secondary battery and secondary battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD1 citations60
US11424500B2Aug 23, 2022
Secondary battery, battery module, and device using secondary battery as power source
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations60
US12100867B2Sep 24, 2024
End cover assembly, secondary battery, battery module, appratus, liquid-injection method and device
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations59
US12155089B1Nov 26, 2024
Battery cell, battery, and electrical device
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations53
US11881588B2Jan 23, 2024
Secondary battery and battery module
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations52
US11757123B2Sep 12, 2023
Cap assembly for a secondary battery and secondary battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations52
US11637345B2Apr 25, 2023
Cap assembly for secondary battery, secondary battery and battery module
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations52
US9929396B2Mar 27, 2018
Power battery cap structure and power battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations52
US11757161B2Sep 12, 2023
Battery cell, battery and electricity consuming device
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations51
US10629864B2Apr 21, 2020
Top cover structure of power battery and power battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations51
US10153476B2Dec 11, 2018
Electrode tab pad plate
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations51
US12080908B2Sep 3, 2024
Top cover assembly, secondary battery and apparatus using battery
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations50
US11923551B2Mar 5, 2024
Battery cell, battery, electric apparatus, and manufacturing method and system of battery cell
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations50
US11715867B2Aug 1, 2023
End cover assembly, battery cell, battery module and device
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD0 citations50
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD
13 patentsUS12368217B2Jul 22, 2025
Secondary battery and battery module
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD0 citations62
US12183931B2Dec 31, 2024
Current collecting member, secondary battery, and method for manufacturing secondary battery
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD0 citations62
US12407069B2Sep 2, 2025
Battery cell, battery, and electrical device
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD0 citations59
US12199315B2Jan 14, 2025
Battery cell, battery, power consumption device and battery cell manufaturing method and device
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD0 citations59
US12362446B2Jul 15, 2025
Battery cell, battery, power consumption device, and device for manufacturing battery cell
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD0 citations52
US12300846B2May 13, 2025
Pressure relief mechanism, battery box, battery cell, battery, preparation method and apparatus
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD0 citations52
US12266806B2Apr 1, 2025
Battery cell, battery, electrical device, and manufacturing method and device for battery cell
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD0 citations52
US12176551B2Dec 24, 2024
Battery cell, battery, electrical device, and manufacturing method and device for battery cell
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD0 citations52
US12327884B2Jun 10, 2025
Battery cell, battery, electric apparatus, and manufacturing method and system of battery cell
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD0 citations51
US12506203B2Dec 23, 2025
End cover assembly, battery cell, battery pack and device
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD0 citations50
US12288840B2Apr 29, 2025
Cylindrical battery cell, battery, electricity consuming device, manufacturing method and manufacturing system
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD0 citations50
US12261307B2Mar 25, 2025
End cover assembly, battery cell, battery and method and device for manufacturing battery cell
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD0 citations50
US12237543B2Feb 25, 2025
Battery, battery module and electric equipment
CONTEMPORARY AMPEREX TECHNOLOGY HONG KONG LTD0 citations50
NINGDE AMPEREX TECHNOLOGY LTD
4 patentsUS9853266B2Dec 26, 2017
Vent and cap assembly of power battery
NINGDE AMPEREX TECHNOLOGY LTD3 citations72
US9640786B2May 2, 2017
Safety cap assembly of power battery
NINGDE AMPEREX TECHNOLOGY LTD2 citations69
US11276896B2Mar 15, 2022
Cap assembly of power battery
NINGDE AMPEREX TECHNOLOGY LTD0 citations62
US10319960B2Jun 11, 2019
Cap assembly of power battery
NINGDE AMPEREX TECHNOLOGY LTD1 citations62
JIANGSU CONTEMPORARY AMPEREX TECH LTD
1 patentShowing the top 50 of 73 patents by PatentIndex Score.