초록 ▼

A method for communicating data to and from a direct current local area network (DC LAN) in an automobile includes receiving data from a first device that is coupled to the DC LAN. The data received from the first device has a first data format associated with a first lower level communication proto

A method for communicating data to and from a direct current local area network (DC LAN) in an automobile includes receiving data from a first device that is coupled to the DC LAN. The data received from the first device has a first data format associated with a first lower level communication protocol that is appropriate for the DC LAN. The method also includes determining that a destination address included in the data identifies a second device in the automobile. The second device does not use the first lower level communication protocol for communication of data. The method further includes converting the data to a second data format associated with a second lower level communication protocol that is appropriate for the second device. In addition, the method includes communicating the data in the second data format to the second device using the second lower level communication protocol.

대표청구항 ▼

A method for communicating data to and from a direct current local area network (DC LAN) in an automobile includes receiving data from a first device that is coupled to the DC LAN. The data received from the first device has a first data format associated with a first lower level communication proto

A method for communicating data to and from a direct current local area network (DC LAN) in an automobile includes receiving data from a first device that is coupled to the DC LAN. The data received from the first device has a first data format associated with a first lower level communication protocol that is appropriate for the DC LAN. The method also includes determining that a destination address included in the data identifies a second device in the automobile. The second device does not use the first lower level communication protocol for communication of data. The method further includes converting the data to a second data format associated with a second lower level communication protocol that is appropriate for the second device. In addition, the method includes communicating the data in the second data format to the second device using the second lower level communication protocol. tantially parallel fin means defining a central axis for each fin means extending through the center of each, (g) said fin means being created by the subdivision of at least one portion of said extension means along substantially parallel lines, said fin means having two substantially parallel main surfaces on opposed sides, two edge surfaces at a leading and a trailing edge with reference to the flow of said cooling medium, (h) said fin means being separated into at least two distinct groups, and at least one of said groups being spaced apart from said first plane by introducing a distance not less than the thickness of said dissipator layer between each of the central axis of said fin means in the spaced apart group and said first plane, (i) each fin means in at least one of said groups being rotated on their central axis into an angular deviation of less than 90 degrees with reference to said first plane (a) whereby increasing the gaps in said louver-like structure between main surfaces of adjacent fin means for allowing better access to said cooling medium flowing through said gaps exposing said fins means to faster flow on both of their main surfaces and at least one edge surface for increasing the engagement of said fin means with said cooling medium, achieving superior heat transfer between said fin means and said cooling medium. 4. A power transformer exposed to a flow of gaseous or liquid cooling medium having improved heat dissipation characteristics by convection and comprising at least a first core leg having substantially horizontal axis of orientation, and at least one winding structure assembled from coil discs each having an outer marginal edge, and at least one substantially plane vertical heat transfer surface, said coil discs being adjacent and stacked in axial relation along said first core leg, said winding structure warming up through energy losses generated by currents flowing through said winding structure, the improvement comprising: (a) at least one of said heat dissipator means being inserted between said coil discs, having at least one substantially plane contact surface defining a first plane, (b) means for establishing tight mechanical contact and improved heat conductive relationship between at least one of said transfer surfaces and at least one of said contact surfaces for receiving heat from at least one of said coil discs, and transferring heat to said cooling medium through said dissipator means, (c) said layer including at least one extended portion closely adjacent and extending beyond said outer marginal edge, (d) said extended portion comprising a louver-like structure for transferring heat between said contact surface and said cooling medium, (e) said louver-like structure comprising a multiplicity of substantially parallel fin means defining a central axis for each fin means extending through the center of each, (f) said fin means being created by subdividing at least one portion of said extension means along substantially parallel lines, said fin means having two substantially parallel main surfaces on opposed sides, two edge surfaces at a leading and a trailing edge with reference to the flow of said cooling medium, (g) said fin means being separated into at least two distinct groups, and at least one of said groups being spaced apart from said first plane by introducing a distance not less than the thickness of said dissipator layer between each of the central axis of said fin means in the spaced apart group and said first plane, (h) each fin means in at least one of said groups being rotated on said central axis into an angular deviation of less than 90 degrees with reference to said first plane (i) whereby equal rate of dissipation can be established for each of said discs by providing equal access to fresh cooling medium, and by increasing the gaps in said louver-like structure between main surfaces of adjacent fin means to allow better access to said cooling me dium flowing through said gaps exposing said fins means to faster flow on both of their main surfaces and at least one edge surface for increasing the engagement of said fin means with said cooling medium, achieving superior heat transfer between said fin means and said cooling medium. 5. A transformer according to claim 4 wherein (a) winding structures on said first core leg being superimposed over winding structures on at least one other core leg in vertical relation for creating a small footprint transformer, (b) at least one baffle positioned between said superimposed winding structures, diverting the preheated part of the flow of said cooling medium away from upper winding structures, said part being preheated by lower winding structures, and guiding fresh cooling medium toward said fin means of at lest one of said upper winding structures (c) whereby the floor space requirement of said small footprint transformer is reduced while equal rate of dissipation established for each of said discs. 6. A transformer according to claim 2 wherein (a) at least two core legs having generally vertical axis of orientation and each core leg accommodating at least one winding structure. 7. A transformer according to claim 6 further including (a) heat dissipator means comprising at least one layer of non-magnetizable highly heat conductive material having at least one contact surface and an extended portion subdivided into fin means for engaging said cooling medium flowing therepast, (b) means for establishing tight mechanical contact and improved heat conductive relationship between at least one of said transfer surfaces and at least one of said contact surfaces for receiving heat from at least one of said winding structures and transferring heat to said cooling medium through said dissipator means (c) whereby small footprint transformers can be built with significantly improved cooling and reduced temperature rise. 8. A transformer according to claim 3 wherein (a) said transformer having a high voltage winding and a low voltage winding, (b) said high voltage winding positioned on the central portion of said core leg between two groups of said low voltage winding, (c) said high voltage winding connected in two parallel branches with a starting terminal on the center of said high voltage winding and said two branches progressing in both directions from said center terminal toward the two groups of said low voltage winding (d) whereby, for an incoming three phase Y-connected supply line with solidly grounded neutral where each of the three high voltage lines being connected to the center terminal of the respective high voltage winding, winding structures for substantially higher voltages can be built without increased end insulation. 9. A transformer according to claim 2 further including (a) means for accommodating at least two dissipator layers between the same two transfer surfaces of said winding structure. 10. A transformer according to claim 3 characterized by (a) a low voltage helical winding structure comprising substantially plane ring-like sheet metal turns each cut open at a selected radius and connected to the next cut-open turn for building a helical winding. 11. A transformer according to claim 3 characterized by (a) a low voltage helical winding structure comprising a number of parallel sheet metal conductors, equalized by cyclically crossing said conductors (b) whereby each parallel conductor carries substantially equal current. 12. A transformer according to claim 3 wherein (a) a low voltage winding structure comprising a number of substantially plane sheet metal conductors, and (b) a louver-like structure prefabricated on an extended portion of at least one selected conductor, closely adjacent said outer marginal edge of said winding and extending beyond said edge, (c) said louver-like structure including fin means spaced apart from the plane of said conductor (d) whereby