What are the welding methods for the connection pieces of new energy vehicle battery modules? (1)
What are the welding methods for the connection pieces of new energy vehicle battery modules? (1)
New energy vehicles require the use of lithium batteries as power batteries. Power batteries are the power sources that provide power for tools, often referring to batteries that provide power for electric vehicles, electric trains, electric bicycles, and golf carts. It is mainly different from the starting battery used for car engine starting.
As the core component of new energy vehicles, the configuration of power batteries for conducting connections is of utmost importance. The connection method between the single cell of the power battery and the module busbar not only affects the manufacturing efficiency of the power battery, but also determines whether the production of the power battery can be automated. It also has an undeniable impact on the performance of the power battery module assembly vehicle.
Power battery module connector
The connecting pieces of power battery modules are mostly made of multi-layer composite materials, with one layer of material being the connecting layer between the connector and the pole to ensure welding performance. Adopting multi-layer material stacking to ensure the conductivity of the connecting piece.
The connecting board substrate is processed and formed by stacking multiple layers of foil, forming a flexible area to compensate for the displacement caused by the expansion of the power battery core and reduce the impact on the low-strength interface.
The connectors of the power battery module are generally rectangular, trapezoidal, triangular, and plate-shaped. The connection surface is pasted with 0.1 thick nickel plated copper foil. During welding, the surface is prone to oxidation and discoloration at high temperatures, and polishing and cleaning are carried out without damaging the surface coating of the product. This type of product not only solves the problem of overall electroplating, but also maximizes conductivity.
Comparison of Several Common Connection Pieces for Power Battery Modules
Copper nickel plated connectors are the best, followed by pure nickel connectors, but they are relatively expensive. Finally, nickel plated steel connectors are relatively inexpensive and easy to weld.
The thickness of the connector chosen by various power battery manufacturers varies, as the thickness of the connector is related to the weight of the consumable materials and the overall weight of the power battery module. Reducing the thickness is the direction of lightweight design for power battery modules.
Hits： 【Print】
Deutsche
Español
français
italiano
português
日本語
한국어
العربية
русский
bahasa Indonesia
Tiếng Việt