A battery module including: a plurality of aligned cells, wherein a cooling unit accommodating a cooling agent is provided in a vicinity of the cells, part of the cooling unit is a vulnerable section having a relatively low compressive strength, and the vulnerable section is unsealed when heat is abnormally generated in at least one of the cells. CDP can be broken down logically into two phases: 1) detecting changes to data on a data source and 2) replicating the changes to a data target. The virtual mask and the projection screen may be created based on a virtual shape template that defines the desired shape for the projection screen, such as with a vector outline. An input is connected to the controller for providing an input signal to the controller for activating selected ones of the multiplicity of illuminated display elements in a desired sequence for providing a dynamic display to the longitudinally extending array. This reduces a service response time and also rapidly offers a location-based service. The method makes it possible to scale a circuit without losing functionality or destroying the hierarchy of the circuit.