Provided is a method of welding laminated metal foils that can prevent blowholes and spatter from being formed. It is a method of welding laminated metal foils sandwiched between a pair of metal plates to the pair of metal plates. The method of welding laminated metal foils sandwiched between a pair of metal plates to the pair of metal plates includes locally pressing and crimping the laminated metal foils sandwiched between the pair of metal plates at a welding point in a laminating direction, and welding the crimped pair of metal plates and laminated metal foils at the welding point.

The present disclosure relates to a method of welding laminated metal foils, and more particularly to a method of welding laminated metal foils sandwiched between a pair of metal plates.
For example, secondary batteries and capacitors collect current by laminated metal foils for electrodes bonded to a metal plate for current collection. Normally, laminated metal foils and a metal plate made of aluminum or copper having excellent conductivity are bonded by welding (metallurgical bonding) or mechanical bonding. When welding is used in this case, electrical resistance after the bonding can be reduced as compared with mechanical bonding.
Japanese Unexamined Patent Application Publication No. 2014-136242 discloses a method of laser welding laminated metal foils to a projection formed on a metal plate while pressing the laminated metal foils against an upper surface of the projection of the metal plate. Specifically, the laminated metal foils are pressed against the upper surface of the projection by pressing a periphery of the projection with an annular pressing member from above the laminated metal foils placed on the metal plate. In this manner, the metal foils in the laminated metal foils or the laminated metal foils and the metal plate are brought into close contact with each other, thereby more effectively preventing welding defects such as blowholes from being formed during welding.


Systems and methods provide for managing faulting network devices. A first network device can receive an error. The first network device can generate one or more frames including data indicative of the error. The first network device can broadcast the one or more frames to one or more neighboring network devices. It may be determined that the first network device is inaccessible. The first data can be retrieved and presented from a second network device among the one or more neighboring network devices. In some embodiments, a network management system can utilize the first data to generate a machine learning model that classifies whether network devices are instances of network devices designated for a Return Merchandise Authorization (RMA) process. In some embodiments, the network management system can apply the first data to a machine learning classifier to determine whether to initiate the RMA process for the first network device.

A network device (e.g., switch, router, etc.) may fault from time to time for any number of reasons. A network operator may be required to send out a technician at a cost of time, expense, and effort to diagnose the fault. However, it can be difficult to troubleshoot the fault if the device is unresponsive, crashed or crashing, and/or continuously rebooting because diagnostic information is lost or inaccessible when the device is down, crashed or crashing, and/or indefinitely rebooting. In these instances, the network operator may be required to send the device back to the manufacturer for further debugging at significant cost of time, expense, and effort for the manufacturer. Thus, improvements are needed for managing faulting network devices to ensure continuous network service for end users and limiting costs of time, expense, and effort to network operators and network device manufacturers for troubleshooting faulting network devices.