DE202009000099U1 - Circuit arrangement with a battery coupler - Google Patents

Abstract

Circuit arrangement with a battery coupler for providing specifiable voltage and / or current quantities from an electrical supply network for consumers (18, 19, 20) or an input (21) and at least one battery with programmable electronic circuit means for controlling and / or controlling the voltage and / or current values as a function of setpoint and / or actual data, characterized in that the circuit arrangement has a module (9) with a plurality of separately switchable inputs and / or outputs (10, 11, 12, 13), which a different current carrying capacity is assignable and that the inputs and / or outputs (10, 11, 12, 13) for the consumers (18, 19, 20) in response to measured current voltage and / or temperature values in the circuit arrangement are switchable ,

Description

State of the art

The The invention relates to an electrical circuit arrangement with a Battery coupler, preferably for connection to an electrical Vehicle electrical system of a motor vehicle, according to the preamble of the main claim.

Such Battery couplers consist essentially of a switching power supply, In particular, a DC / DC converter, in particular for the supply of sensitive consumers from the electrical system with at least one Battery is used.

From the DE 10 2005 046 658 A1 is such a DC / DC converter is known, which can perform a bidirectional transformation of DC voltages, for example, for a power supply or charging station which can charge an energy storage, here a fuel cell. In this known DC / DC converter, a control and / or regulation with a microcontroller is provided which determines corresponding control variables on the basis of permanently measured currents and / or voltages as actual data in the arrangement. This microcontroller also has an interface via which a digital data exchange can be made, via which the setpoint and actual operating data can be set and evaluated.

Also from the DE 100 63 289 B4 For example, such a DC / DC converter is known which couples different power supply connections in a motor vehicle via a corresponding energy management system.

Especially if, however, sensitive measuring tasks with those of the battery coupler supplied devices should not be done only a safe monitoring of all operating data in the arrangement but it should also be flexible and quick to respond for any errors or special operating conditions can to avoid measurement errors.

Presentation of the invention

The The invention relates to a circuit arrangement with a battery coupler for the provision of specified voltage and / or current quantities from an electrical supply network for consumers, the at least one battery and programmable electronic circuit means for controlling and / or controlling the voltage and / or current quantities as a function of desired and / or actual data. According to the invention advantageously Circuitry a block with a plurality of separately switchable outputs on which a different Current capacity is assignable, and the outputs for the consumers are dependent on measured current Voltage and / or temperature values in the circuit arrangement switchable.

A Such circuitry can in a particularly advantageous manner connected to an electrical system of a motor vehicle and consumers can use measuring systems for Diagnosis and / or monitoring of components of the vehicle preferably during vehicle testing to be the Proof of quality and reliability to provide the components or modules to be tested. For this It is also advantageous if a loadable via the circuit arrangement Measuring battery for additional supply of the measuring systems is available.

According to one advantageous embodiment are according to the Invention in the field of measuring battery current voltage and / or Temperature measuring elements available, their output variables for controlling and / or regulating the block with a plurality separately switchable outputs and / or for control the electronic circuit means are approachable.

The Circuit arrangement has a view in itself known manner constructed switching power supply and the switching power supply Controlling microcontroller and digital interconnections, in particular bus lines, in the circuit arrangement and at interfaces to external components or devices. The switching power supply can in a conventional manner one with semiconductor devices have constructed DC / DC converter.

The Power supply of the circuit arrangement with the battery coupler can be about the starter battery or over the additionally available charging current of the generator be powered while driving via the electrical system. In connection with the proposed battery coupler represents the aforementioned connected measuring battery, the supply of the invention Measuring systems safe at all times. In any operating condition of the vehicle can therefore by the energy management of the battery coupler of the invention Circuitry with separately switchable outputs always the reliable and qualitatively consistent supply the power consumers or the measuring systems are ensured. For example, if the measuring battery is no longer on a sufficient capacity one of the ev. not so critical consumers or components of the Metering system be shut down separately.

With the previously explained components of the invention In addition, circuitry can also be simple Way an undervoltage shutdown, a temperature protection, a active fan cooling, an adjustable output voltage, for example, 9V to 16V, an input current limit of, for example 14 A or 40 A, an output current limit of, for example 25 A and active polarity reversal protection at the inputs and outputs will be realized.

Short description of the drawing

One Embodiment of the invention will be with reference to FIG explained the drawing. It shows:

1 shows a schematic block diagram of a circuit arrangement according to the invention, which is connected to the electrical system of a motor vehicle.

Way to execution the invention

Out 1 schematically is a circuit arrangement with a battery coupler for providing specifiable voltage and / or current variables from an electrical supply network, here the electrical system 1 a motor vehicle, for various consumers, here a measuring system 2 for diagnosis and / or monitoring of components of the vehicle, recognizable.

It is also a loadable via the circuitry measuring battery 3 available, for additional supply of the measuring systems 2 , The power supply of the proposed battery coupler can characterized for example via a starter battery or via an additionally available charging current of a generator not shown here while driving via the electrical system 1 be fed. In addition, there is an entrance 21 Also a charging input from a mains charger or even from a fuel cell generator possible.

The circuit arrangement has a switched mode power supply 5 auf, which is constructed in a conventional manner, or in the same manner as in the prior art mentioned in the introduction. In the exemplary embodiment according to the invention, these are, for example, preferably unidirectional or else bidirectional, electrically isolated DC / DC converters constructed with semiconductor components. From the output of the switching power supply 5 and the output of the measuring battery 3 can via supply lines 3 ' and 5 ' Output currents to a microcontroller 4 be guided.

Furthermore, programmable electronic circuit means, here a microcomputer or microcontroller 4 for controlling and / or controlling the voltage and / or current variables as a function of setpoint and / or actual data. For controlling and / or regulating the switching power supply 5 via the microcontroller 4 are digital connection lines, in particular bus lines 6 and 7 available and it is also a bus line 8th as an interface to external devices or devices present, for example, as a CAN or LIN bus system or to a display for visualization of the states via an LCD display.

Thus, also a parameterization, an output of operating states of the proposed battery coupler or a Aufwachsignalisierung means of the microcontroller 4 via various bus interfaces, also via USB or Bluetooth with a uniform interface.

It is also a building block 9 present, with a plurality of separately switchable outputs 10 . 11 . 12 as well as an entrance 13 that has different fuses 14 . 15 . 16 . 17 different current carrying capacities are associated with each prioritized shutdown thresholds of the outputs 10 to 12 and the entrance 13 ,

It is thus a temperature monitoring of the measuring battery 3 with an adjustment of the end-of-charge voltage, an estimate of the state of charge of the measuring battery 3 by means of an ampere-hour count or a measurement of the battery voltage via sensor cables directly to the measuring battery 3 in the form of a simple battery management of the measuring battery 3 possible.

The outputs are in the block 9 for different consumers or measuring devices 18 . 19 . 20 in the measuring system 2 switched so that these depend on in a building block 22 measured current voltage and / or temperature values U, I, T of the measuring battery 3 , are switchable.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 102005046658 A1 [0003]
• - DE 10063289 B4 [0004]

Claims (6)

Circuit arrangement with a battery coupler for the provision of specifiable voltage and / or current quantities from an electrical supply network for consumers ( 18 . 19 . 20 ) or an entrance ( 21 ) and at least one battery with programmable electronic circuit means for controlling and / or controlling the voltage and / or current variables as a function of desired and / or actual data, characterized in that the circuit arrangement comprises a module ( 9 ) with a plurality of separately switchable inputs and / or outputs ( 10 . 11 . 12 . 13 ), to which a different current carrying capacity can be assigned and that the inputs and / or outputs ( 10 . 11 . 12 . 13 ) for consumers ( 18 . 19 . 20 ) are switchable in dependence on measured current, voltage and / or temperature values in the circuit arrangement. Circuit arrangement according to claim 1, characterized in that the consumer measuring systems ( 18 . 19 . 20 ) and a loadable via the circuit arrangement measuring battery ( 3 ) for the additional supply of the measuring systems ( 18 . 19 . 20 ) is available. Circuit arrangement according to Claim 2, characterized in that in the region of the measuring battery ( 3 ) Current-voltage and / or temperature measuring elements are present whose output variables for controlling and / or regulating the component ( 9 ) with a plurality of separately switchable inputs and / or outputs ( 10 . 11 . 12 . 13 ) and / or can be used to control the electronic circuit means. Circuit arrangement according to one of the preceding claims, characterized in that the circuit arrangement is a switching power supply ( 5 ) and one the switching power supply ( 5 ) controlling microcontroller ( 4 ) as well as digital connection line, in particular bus lines ( 6 . 7 . 8th ), in the circuit arrangement and at interfaces to external components or devices. Circuit arrangement according to one of the preceding claims, characterized in that the switching power supply ( 5 ) includes a floating DC / DC converter constructed with semiconductor devices. Circuit arrangement according to one of the preceding claims, characterized in that the circuit arrangement to an electrical system ( 1 ) of a motor vehicle and the measuring systems ( 18 . 19 . 20 ) are preferably used for the diagnosis and / or monitoring of components of the vehicle during vehicle testing.