Electrochemical Energy Storage Device

• Main Authors: Zhao, Fanghui, Luo, Junqiang, Dong, Guangyong, Chen, Dezhong, Xiang, Jie
• Format: Patent
• Language: English
• Published: 27.10.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY

An electrochemical energy storage device, which relates to the technical field of electrochemical energy storage devices. The device comprises: an upper connecting bar (4), a rubber piece (3) that has an insulating and sealing effect, a housing (7) and a rolled core (5); the housing (7) is cylindrical and is provided with an opening at at least one end, and the rubber piece (3) and the housing (7) are sealedly connected by means of a waisted section (9) provided on the housing (7); the rolled core (5) is provided in an inner cavity of the housing (7); one end of the upper connecting bar (4) penetrates the rubber piece (3) so as to be conductively connected to a negative electrode welding piece (1), while the other end of the upper connecting bar (4) is conductively connected to the rolled core (5); the rolled core (5) is conductively connected to the housing (7) by means of a lower connecting piece (6); and a positive electrode welding piece (8) is conductively connected to the housing (7). The rubber piece (3) features a good insulation effect, a simple structure and low cost. The upper connecting bar (4) and the lower connecting piece (6) are used for welding, and thus internal resistance is low and large current charging and discharging may be achieved.