Advantages of Good Welding
There are lots of forms of welding used for the interconnection of battery packs. Laser, resistance, spot, and so on. are just some of the widespread sorts. Good Welding was developed by Hesse Mechatronics to supply another possibility. Good Welding is “wire bonding with out the wire” because it continues to make use of ultrasonic power to assist type the interconnection. The advantages of Good Welding is that you’ve got a decrease price of possession when evaluating to wire bonding since you don’t use wire, wire guides, cutter blades, and also you don’t spend the time organising the bond head or altering wire spools.
Good Welding is a room-temperature course of. One major concern with laser welding is the potential for extreme warmth to penetrate the adverse terminal and trigger thermal runaway, which can result in catastrophic failure.
Hesse’s patented PiQC (Course of Built-in High quality Management) is likely one of the elements that makes this a “sensible” welder. We monitor as much as 5 variables in the course of the interconnection course of. No different welder available on the market has such sophistication. If the PiQC sensor detects a high quality index lower than the set threshold, the machine may cease or ship a sign to the barcode notifying that the precise bond wants additional assessment. Determine 3 shows a PiQC screen-shot.
Cell and Busbar Metallization
Ideally, the busbar materials must be aluminum. Al1145 is the perfect sort. Different Al sorts resembling 3003, 5052, or 6061 will suffice. In case you use a Cu busbar, you’ll have to clear the Cu earlier than wire bonding because of the oxide layer, or you might plate it with ENIG (Electroless Nickel Immersion Gold) or ENEPIG (Electroless Nickel Electroless Palladium Immersion Gold). These are off-the-shelf chemistries which are wonderful for Good Welding. Confer with the IPC specs for 4556 and 4552. All busbar materials must be half-hard mood. The general thickness of the tabs that may get ultrasonically hooked up to the cylindrical cell must be .3mm thick and 1mm thick, relying on the present generated.
There are lots of methods to interconnect cylindrical cells in a battery pack. Wire bonding is widespread as a result of it has a decrease price of possession mannequin than laser welding. Good Welding would also have a decrease price of possession than wire bonding, however the busbar wants a special design. One key problem is that Good Welding is a room-temperature course of and that no exterior warmth will get generated. One major concern with laser welding is that if extreme warmth penetrates the adverse terminal, the cell may go into thermal runaway. Resistance welders have little to no in-line course of monitoring. Good Welding can be safer and supply real-time high quality information in your interconnections.
Hesse Buyer Options is one other Hesse division that provides manufacturing service for wire bonding or sensible welding of battery packs and different microelectronic gadgets. Additionally, Hesse Buyer Options offers course of assist, on-line assist, coaching, and price of possession opinions. Contact us so we may focus on your utility with you. https://www.hesse-mechatronics.com/en/customer-solutions/
Hesse Mechatronics is a producer of wire, ribbon bonders, and Good Welders. For extra info, please contact gross [email protected]