Lithium battery copper-aluminum composite connector
Product Overview:
With the widespread use of lithium-ion batteries—especially as the number of battery packs in electric vehicles continues to grow—the issue of PACK connections in lithium-ion batteries is becoming increasingly prominent, severely limiting their practical application. Electric vehicles powered by lithium batteries often have thousands of battery packs installed, with the positive and negative electrodes of individual cells made from copper foil and aluminum foil, respectively. Achieving reliable, lightweight series and parallel connections among these lithium battery packs is a key technological challenge for the development of lithium-battery-powered vehicles.
Keywords:
Lithium battery copper-aluminum composite connector
Details
With the widespread use of lithium-ion batteries—particularly the increasing number of battery packs in electric vehicles—the issue of PACK connections in lithium-ion batteries is becoming increasingly prominent, severely limiting their practical application. Electric vehicles powered by lithium batteries often have thousands of battery packs installed, with the positive and negative electrodes of individual cells made from copper foil and aluminum foil, respectively. Achieving reliable, lightweight series and parallel connections among these lithium battery packs is a key technological challenge for the development of lithium-battery-powered vehicles.
The company has developed two types of copper-aluminum composite materials—copper-aluminum composite base columns and copper-aluminum composite transition sheets—through independently researched and developed technology. The base column material is fabricated by bonding a 3-mm-thick copper layer with a 10-mm-thick aluminum plate, creating a copper-aluminum composite base column. In this structure, the copper layer serves as the negative electrode and is electrically connected to the copper current collector, while the aluminum layer is connected to the outer aluminum plate. As a result, both exposed electrodes of the battery pack are made of aluminum, and their connection can be achieved using laser welding technology. The transition sheet material consists of a 10-mm-wide copper strip sandwiched between two aluminum plates. The copper strip is electrically connected to the internal copper current collector via copper rivets, while the aluminum plates on either side facilitate the series and parallel connections among individual battery cells.
Product dimensions: Base column material—Copper: 3 mm + Aluminum: 9 mm, or other specifications.
Key product features: High composite strength, achieving metallurgical bonding between copper and aluminum metals, with no contact resistance between copper and aluminum, ensuring stable and reliable quality.
Composite strength: 100 MPa or higher.
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Application areas
Heat exchanger
Automobiles and Power Batteries
Lighting (LED)
Architectural decoration
Household appliances (IH heating)
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Luoyang Tongxin Composite Materials Technology Co., Ltd.
Room 2406-2407, Building 10, Dongfang Jindian, Binhe South Road, Luoyang City, Henan Province
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