Devices and/or methods for determining the availability of electric energy, in particularly in vehicle electric systems comprising several energy accumulators
First Claim
1. A device for determining the availability of electrical energy in an on-board electrical system having energy-storing circuits that form at least two subsystems, in the form of battery circuits, which communicate with one another via a voltage converter, and having a control unit, which influences the voltage converter and includes computation means, which evaluate charge-specific algorithms, wherein the charge-specific algorithms include at least one threshold value statement (SOCS) for the availability of electrical energy in at least one subsystem, threshold value statements (SOHS) for malfunctions in at least one subsystem, and both at least one threshold value statement (SOCS) for availability of electrical energy in at least one subsystem and threshold value statements (SOHS) for malfunctions in at least one subsystem, further comprising means for displaying the availability of the electrical energy, a malfunction, or displaying both the availability of electrical energy and a malfunction.
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Abstract
The invention relates to devices and/or methods for determining the availability of electrical energy in two-energy accumulator vehicle electric systems, in which both energy accumulators, particularly batteries, can be connected to one another via a D.C. converter. The required electric energy is generated by means of a generator that is driven by a vehicle engine. The customary consumers are connected to a first consumer battery circuit (10, 24). Additional consumer, for example, high-current consumers, particularly the starter, are connected to the second battery circuit (11, 29). A control device, for example, a controller that is equipped with a microprocessor determines the availability of the electric energy and occurring faults while evaluating.
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Citations
19 Claims
- 1. A device for determining the availability of electrical energy in an on-board electrical system having energy-storing circuits that form at least two subsystems, in the form of battery circuits, which communicate with one another via a voltage converter, and having a control unit, which influences the voltage converter and includes computation means, which evaluate charge-specific algorithms, wherein the charge-specific algorithms include at least one threshold value statement (SOCS) for the availability of electrical energy in at least one subsystem, threshold value statements (SOHS) for malfunctions in at least one subsystem, and both at least one threshold value statement (SOCS) for availability of electrical energy in at least one subsystem and threshold value statements (SOHS) for malfunctions in at least one subsystem, further comprising means for displaying the availability of the electrical energy, a malfunction, or displaying both the availability of electrical energy and a malfunction.
- 7. A method for determining the availability of electrical energy in an on-board electrical system having energy-storing circuits forming at least two subsystems, in the form of battery circuits, which communicate with one another via a voltage converter, and having a control unit, which influences the voltage converter and includes computation means, which evaluate charge-specific algorithms, wherein the charge-specific algorithms include at least one threshold value statement (SOCS) for the availability of electrical energy in at least one subsystem, threshold value statements (SOHS) for malfunctions in at least one subsystem, and Of both at least one threshold value statement (SOCS) for availability of electrical energy in at least one subsystem and threshold value statements (SOHS) for malfunctions in at least one subsystem, further comprising means for displaying the availability of the electrical energy, a malfunction, or displaying both the availability of electrical energy and a malfunction, wherein charge-specific algorithms with at least one threshold value statement for the availability of electrical energy in at least one subsystem (SOCS) and/or algorithms with threshold value statements for malfunctions in at least one subsystem (SOHS, SOHS1, SOHS2) are evaluated.
Specification