from chemistry to pack
Cylindrical cells are commonly joined using several methods, each with distinct advantages and disadvantages depending on the application. Here are the most popular methods: Spot Welding Description: Spot welding uses a controlled electrical current to create localized heat, fusing a nickel strip to the positive and negative terminals of the cells. World Electr. Veh. J. 2018, 9(2), … Read more
Relaxation in bolted busbar joints can be a significant battery durability issue. As joints relax the resistance of that joint increases, resulting in larger voltage drops and excess heat generation in the joint. The relaxation of the joint can be the result of a number of mechanisms: Stress Relaxation Stress relaxation is a function of time, … Read more
Is there a relationship netween weld mechanical and electrical properties? The basic conclusion is that low electrical resistances were found to correlate with high mechanical strengths of the welds. Correlation between electrical resistance and tensile strength for welds produced with (blue markers) and without (red markers) spatial beam oscillation. [1] This post has been built … Read more
What is the optimal busbar joint overlap? It should be noted that the experimentally derived optimum is for plain busbars and does not include a hole for the fixture. Braunovic [3] shows the impact on resistance of the joint overlap. The resistance ratio is the ratio of the resistance measured across the joint divided by … Read more