SYSTEM AND METHOD OF ACTIVE EQUALIZATION BETWEEN POWER SUPPLY SYSTEMS SHARING A RECHARGEABLE ELECTRICAL POWER STORAGE DEVICE, APPLICABLE TO AN AUTOMOTIVE VEHICLE
First Claim
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1. A system of active equalization between power supply systems sharing a rechargeable electrical power storage device, applicable to an automotive vehicle, comprising the combination of:
- at least a first (1) and a second (2) electrical system, including first (1a) and second (2a) electrical power sources, respectively, for feeding at least one electrical device (3) of said automotive vehicle;
at least one rechargeable electrical power storage device (4) shared by said electrical systems (1, 2);
detection means for detecting at least the current circulating between said first (1) and second (2) electrical systems, said electrical systems (1, 2) and said rechargeable electrical power storage device (4), which is at least one in number, and said electrical systems (1, 2) and said electrical device (3) which is at least one in number, and the voltage in said electrical power sources (1a, 2a) of said first (1) and second (2) electrical systems and in said rechargeable storage device;
at least one switching assembly (5, 6) associated to each of said first (1) and second (2) electrical systems, allowing the rechargeable electrical power storage device (4) to electrically connect with either of said electrical systems (1, 2), or with both, or allowing said electrical systems (1, 2) to connect with each other; and
an electronic system (7) associated to at least said detection means and to said switching assemblies (5, 6), which are at least two in number, and which it controls;
wherein each of said switching assemblies (5, 6) comprises a switching device of a first type (5a, 6a), which is actuated by said electronic system (7) when only one transient electrical connection not exceeding a predetermined time period is required, and a switching device of a second type (5b, 6b), which is actuated by said electronic system (7) when an electrical connection of a duration exceeding that of said predetermined time is required, the electronic system (7) being adapted for determining which elements of the system, namely the rechargeable electrical power storage device (4), first (1) or second (2) electrical system, need to be connected with each other and for how long.
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Abstract
A system of managing power supply systems in automobiles, particularly a system of active equalization between power supply systems sharing a rechargeable electrical power storage device such as a spare battery.
7 Citations
20 Claims
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1. A system of active equalization between power supply systems sharing a rechargeable electrical power storage device, applicable to an automotive vehicle, comprising the combination of:
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at least a first (1) and a second (2) electrical system, including first (1a) and second (2a) electrical power sources, respectively, for feeding at least one electrical device (3) of said automotive vehicle;
at least one rechargeable electrical power storage device (4) shared by said electrical systems (1, 2);
detection means for detecting at least the current circulating between said first (1) and second (2) electrical systems, said electrical systems (1, 2) and said rechargeable electrical power storage device (4), which is at least one in number, and said electrical systems (1, 2) and said electrical device (3) which is at least one in number, and the voltage in said electrical power sources (1a, 2a) of said first (1) and second (2) electrical systems and in said rechargeable storage device;
at least one switching assembly (5, 6) associated to each of said first (1) and second (2) electrical systems, allowing the rechargeable electrical power storage device (4) to electrically connect with either of said electrical systems (1, 2), or with both, or allowing said electrical systems (1, 2) to connect with each other; and
an electronic system (7) associated to at least said detection means and to said switching assemblies (5, 6), which are at least two in number, and which it controls;
wherein each of said switching assemblies (5, 6) comprises a switching device of a first type (5a, 6a), which is actuated by said electronic system (7) when only one transient electrical connection not exceeding a predetermined time period is required, and a switching device of a second type (5b, 6b), which is actuated by said electronic system (7) when an electrical connection of a duration exceeding that of said predetermined time is required, the electronic system (7) being adapted for determining which elements of the system, namely the rechargeable electrical power storage device (4), first (1) or second (2) electrical system, need to be connected with each other and for how long. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of active equalization between power supply systems sharing a rechargeable electrical power storage device, applicable to an automotive vehicle, said power supply systems including at least a first (1) and a second (2) electrical system, including first (1a) and second (2a) electrical power sources, respectively, to feed at least one electrical device (3) of said automotive vehicle, characterized in that it comprises:
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a) detecting that at least one of said electrical systems (1, 2), which are at least two in number, is incapable of providing by itself the voltage and/or intensity required by at least one electrical device (3) which it feeds;
b) detecting that said rechargeable electrical power storage device (4) has a voltage higher than that of said electrical power source (1a, 2a) of said detected electrical system (1, 2);
c) actuating a switching device of a first type (5a, 6a), to electrically connect said rechargeable electrical power storage device (4) with said electrical system (1, 2) detected for a predetermined time period for helping the detected electrical system (1, 2) feed said electrical device (3); and
d) actuating a switching device of a second type (5b, 6b) to electrically connect said rechargeable electrical power storage device (4) with said electrical system (1, 2) detected for a longer time period than said predetermined time period, if after said predetermined time period the detected electrical system (1, 2) is still incapable of providing by itself the voltage and/or intensity required by the electrical device (3) which it feeds, to continue helping the detected electrical system (1, 2) feed said electrical device (3). - View Dependent Claims (19, 20)
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Specification