Apparatus and method for an electric power supply with changeable electric connectivity between battery modules
First Claim
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1. An electrical circuit comprising:
- at least three battery modules, wherein;
each of said battery modules comprises at least one battery subportion and at least two electric switches,each of said battery modules is electrically connected to at least a second of said battery modules through at least one electric inter-battery-module connection line, andsaid at least two electric switches in each battery module are configured to change an electric connectivity between a first battery subportion of one of said battery modules and at least one second battery subportion of another of said battery modules between at least two alternatives of the electric connectivity by effective switching of said electric switches; and
at least one auxiliary power supply bus, wherein the at least one auxiliary power supply bus comprises at least two electric terminals that are pairwise electrically connected to at least two noncongruent electrical contacts of at least one battery subportion of at least one battery module.
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Abstract
A traction power source for electric vehicles in a single unit. Specifically, traction power source integrates several functions, such as the battery and inverter. In addition, further functionalities that are traditionally in separate units can be integrated into the system and efficiently performed by the same electronics, such as battery management and thermal management.
36 Citations
48 Claims
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1. An electrical circuit comprising:
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at least three battery modules, wherein; each of said battery modules comprises at least one battery subportion and at least two electric switches, each of said battery modules is electrically connected to at least a second of said battery modules through at least one electric inter-battery-module connection line, and said at least two electric switches in each battery module are configured to change an electric connectivity between a first battery subportion of one of said battery modules and at least one second battery subportion of another of said battery modules between at least two alternatives of the electric connectivity by effective switching of said electric switches; and at least one auxiliary power supply bus, wherein the at least one auxiliary power supply bus comprises at least two electric terminals that are pairwise electrically connected to at least two noncongruent electrical contacts of at least one battery subportion of at least one battery module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 25, 26, 27, 28, 29, 30, 31, 32, 34, 35, 36)
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17. An electrical circuit comprising:
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at least three battery modules, wherein; each of said battery modules comprises at least one battery subportion and at least two electric switches, each of said battery modules is electrically connected to at least a second of said battery modules through at least one electric inter-battery-module connection line, and said at least two electric switches in each battery module are configured to change an electric connectivity between a first battery subportion of one of said battery modules and at least one second battery subportion of another of said battery modules between at least two alternatives of the electric connectivity by effective switching of said electric switches; and at least one auxiliary power supply bus, wherein; at least one auxiliary power supply bus further comprises at least two terminals each of which is electrically connected to at least one of said electric inter-battery-module connection lines, and the at least one auxiliary power supply bus is configured to be temporarily disconnected from at least one of its terminals by at least one electric switch.
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22. An electrical circuit comprising:
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at least three battery modules, wherein; each of said battery modules comprises at least one battery subportion and at least two electric switches, each of said battery modules is electrically connected to at least a second of said battery modules through at least one electric inter-battery-module connection line, and said at least two electric switches in each battery module are configured to change an electric connectivity between a first battery subportion of one of said battery modules and at least one second battery subportion of another of said battery modules between at least two alternatives of the electric connectivity by effective switching of said electric switches; and at least two auxiliary power supply busses, wherein; the at least two auxiliary power supply busses differ in voltage by at least 25%, and at least one auxiliary power supply bus provides electric power for safety-relevant auxiliaries.
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23. An electrical circuit comprising:
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at least three battery modules, wherein; each of said battery modules comprises at least one battery subportion and at least two electric switches, each of said battery modules is electrically connected to at least a second of said battery modules through at least one electric inter-battery-module connection line, and said at least two electric switches in each battery module are configured to change an electric connectivity between a first battery subportion of one of said battery modules and at least one second battery subportion of another of said battery modules between at least two alternatives of the electric connectivity by effective switching of said electric switches; at least two auxiliary power supply busses; and at least two auxiliary units configured to provide at least one same functionality electrically connected to different auxiliary power supply busses.
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24. An electrical circuit comprising:
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at least three battery modules, wherein; each of said battery modules comprises at least one battery subportion and at least two electric switches, each of said battery modules is electrically connected to at least a second of said battery modules through at least one electric inter-battery-module connection line, and said at least two electric switches in each battery module are configured to change an electric connectivity between a first battery subportion of one of said battery modules and at least one second battery subportion of another of said battery modules between at least two alternatives of the electric connectivity by effective switching of said electric switches; and at least two auxiliary power supply busses, wherein a functionality with specified safety level of at least ASIL C is provided by at least two auxiliaries that are electrically connected to different auxiliary power supply busses.
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33. An electrical circuit comprising:
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at least three battery modules, wherein; each of said battery modules comprises at least one battery subportion and at least two electric switches, each of said battery modules is electrically connected to at least a second of said battery modules through at least one electric inter-battery-module connection line, and said at least two electric switches in each battery module are configured to change an electric connectivity between a first battery subportion of one of said battery modules and at least one second battery subportion of another of said battery modules between at least two alternatives of the electric connectivity by effective switching of said electric switches; and at least one acceleration sensor.
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37. A method for generating at least one electrical voltage for at least one electrical load comprising:
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regularly reconfiguring an electrical connectivity of at least two battery subportions by subsequently changing between at least the following switching states using at least two electric switches per battery subportion; a first battery subportion is electrically conductively connected in series to at least one second battery subportion, and the at least one battery subportion is not electrically conductively connected to any other battery subportion, wherein each of the at least two battery subportions comprises at least one electronic controller which turns a battery subportion off by changing a connectivity of the battery subportion to the other battery subportion in such a way that the battery subportion is not forming a closed electric circuit with at least one other battery subportion or at least one load so that said battery subportion is not involved in external current flow, if an emergency event is detected by said at least one electronic controller. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification