Copper flexible connecting sheet for lithium ion battery and lithium ion battery

• Main Authors: ZHOU DEQING, WANG YONGJUN, WANG GUOCHAO, ZHANG QIANBING, SU XIAOLIU
• Format: Patent
• Language: Chinese; English
• Published: 09.06.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The utility model relates to the technical field of lithium ion batteries, and discloses a copper flexible connecting piece for a lithium ion battery and the lithium ion battery thereof. The copper flexible connecting piece for the lithium ion battery comprises a shell, a battery cell roll core, a cover plate, a positive pole lug, a negative pole lug, a positive pole column, a negative pole column, a safety valve, an air guide groove, an explosion-proof membrane, a protective net, a connecting piece, a first connecting area and a second connecting area. According to the copper flexible connecting sheet for the lithium ion battery and the lithium ion battery thereof, the positive tab and the negative tab are effectively connected with the connecting sheet through ultrasonic welding; and thesecond connecting area is used for laser welding, and laser welding is conducted on the pre-super-welding position to connect the connecting piece with the cover plate assembly. Through the first connecting area and the seco