EP4559093A1 - Trennschaltervorrichtung, fahrzeug sowie verfahren - Google Patents
Trennschaltervorrichtung, fahrzeug sowie verfahrenInfo
- Publication number
- EP4559093A1 EP4559093A1 EP23739549.6A EP23739549A EP4559093A1 EP 4559093 A1 EP4559093 A1 EP 4559093A1 EP 23739549 A EP23739549 A EP 23739549A EP 4559093 A1 EP4559093 A1 EP 4559093A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- power transistors
- parallel
- electrical
- diagnostic
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/18—Modifications for indicating state of switch
Definitions
- the present invention relates to a circuit breaker device, a vehicle and a method.
- Batteries in a vehicle are used to supply electrical power to the vehicle's electrical units.
- the vehicle's batteries can be connected to the units, for example by means of electrical connections or lines.
- a mechanical contactor arranged in the electrical line can, for example, open the electrical line and interrupt a current flow by mechanically switching switching contacts. Such mechanical contactors can require a lot of installation space and only have a limited service life.
- contactors for separating electrical connections or lines should be tested regularly for operational safety and to ensure a high safety standard. Testing a vehicle contactor often takes place when the vehicle is started. Disadvantageously, defects in the contactor, which occur, for example, during the subsequent journey of the vehicle, are not detected while the vehicle is in motion, but only when the vehicle is next started.
- circuit breaker device with the features of claim 1 and a vehicle with the features of claim 7 and a method with the features of claim 8. Further features and details of the invention emerge from the subclaims, the description and the drawings . Features and details that are described in connection with the circuit breaker device according to the invention naturally also apply in connection with the vehicle according to the invention and / or the method according to the invention and vice versa, so that reference is always made to each other with regard to the disclosure of the individual aspects of the invention can.
- the present invention shows a circuit breaker device for switching an electrical connection of a vehicle.
- the disconnector device comprises at least two disconnectors connected in parallel, each with a closed state and an open state, with at least both or preferably each of the at least two disconnectors connected in parallel having two power transistors connected in anti-series, each with a control electrode.
- the isolating switch device comprises a control unit with at least one diagnostic mode, the control unit being set up to, in the diagnostic mode, in accordance with a fixed or definable switching sequence, a respective control electrode of the power transistors of the at least two parallel-connected isolating switches for a respective transfer of the power transistors of the at least two parallel-connected isolating switches to be controlled separately between a leading state and a blocking state.
- the circuit breaker device comprises a detection unit, wherein the detection unit is set up to generate a respective electrical diagnostic signal at a respective connection point between the respective two power transistors of the at least two parallel-connected circuit breakers in the diagnostic mode of the control unit for the specified to record the switching sequence.
- the circuit breaker device comprises a diagnostic unit, in particular for determining a functionality of the circuit breaker device, wherein the diagnostic unit is set up to determine a respective functionality of a power transistor based on the respective detected electrical diagnostic signal at the respective connection point between the respective two power transistors of the at least two parallel-connected circuit breakers of the power transistors of the at least two parallel-connected circuit breakers.
- the circuit breaker device is in particular for switching an electrical connection for electrically connecting a first unit, for example of the vehicle, to a second unit, for example of the vehicle. Switching can be understood as opening the electrical connection or closing the electrical connection.
- circuit breaker device is designed in particular to carry out a method according to the invention.
- the isolating switch device in particular has at least a first isolating switch and a second isolating switch, which are electrically connected in parallel. It is also conceivable that the isolating switch device has more than two isolating switches, for example six isolating switches, which are electrically connected in parallel.
- the current through the circuit breaker device can therefore be carried by a plurality of circuit breakers.
- the power transistors can be designed to be particularly simple and/or inexpensive.
- a circuit breaker is (electrically) opened in an open state of the circuit breaker.
- the current flow through the circuit breaker is interrupted.
- the isolating switch is electrically open in the open state when at least one of the two anti-series connected power transistors of the isolating switch is in the off state.
- a circuit breaker is (electrically) closed in the closed state of the circuit breaker.
- current flow through the circuit breaker is possible in a closed state.
- the circuit breaker is in the closed state in particular when the at least two power transistors of the circuit breaker connected in series are (simultaneously) each in the conductive state.
- the respective isolating switch of the isolating switch device is formed by at least a first power transistor and a second power transistor, preferably only by a first power transistor and a second power transistor.
- each of the circuit breakers can be designed in accordance with the description above.
- Features and/or details and/or comments and/or explanations which are expressed about a power transistor and/or about the first power transistor and/or about the second power transistor in the preceding and/or subsequent paragraphs can also be used for the one power transistor or the first power transistor or the second power transistor apply, and vice versa.
- the power transistors of the isolating switches of the isolating switch device are of the same design or have the same design.
- the circuit breaker device can therefore be particularly simple and/or inexpensive.
- the power transistor can be transferred between a conducting state and a blocking state (provided that the Power transistor works, i.e. has no defect and/or error).
- the power transistor can be a MOSFET power transistor with the three connections gate (as a control electrode), drain and source.
- An (electrical) resistance of the power transistor and thus the current through a drain-source path of the MOSFET power transistor can be controlled by an electrical voltage between the gate and source and the resulting electrical field.
- the electrical voltage between the gate and source of the MOSFET power transistor and the resulting electric field can thus transfer the MOSFET power transistor between the conducting state and the blocking state.
- each of the at least two circuit breakers connected in parallel has two power transistors connected in anti-series, each with a control electrode
- the expression “where at least both or preferably each of the at least two circuit breakers connected in parallel has two power transistors connected in anti-series, each with a control electrode” is intended to express that a first power transistor and a second power transistor of a circuit breaker are connected in series in opposite polarity.
- the control unit can advantageously (at least in the diagnostic mode) separately control each of the power transistors of the at least two parallel-connected isolating switches in such a way that the respective power transistor of the at least two parallel-connected isolating switches can be transferred between the conductive state and the blocking state independently of one another.
- a first power transistor of a first isolating switch of the isolating switch device can be switched independently of the second power transistor of the first isolating switch and independently of a first power transistor and independently of a second power transistor of a second isolating switch of the isolating switch device, that is, can be transferred between a conductive state and a blocking state ( , provided that the power transistor is functioning, i.e.
- Determining the functionality of a power transistor can thus be carried out particularly easily, for example by transmitting a respective electrical diagnostic signal at a respective connection point between the respective two power transistors of the at least two parallel-connected circuit breakers are detected.
- a respective electrical diagnostic signal is detected for the two power transistors of a first disconnector of the at least two disconnectors at a common connection point and an electrical diagnostic signal is detected for the two power transistors of the second disconnector of the at least two disconnectors.
- control unit in the diagnostic mode also has or ensures a separation function, in particular the separation function being dominant over a diagnostic function of the control unit (in the diagnostic mode) for determining a respective functionality of a power transistor.
- the isolating function is in particular a function of the isolating switch device, in which the electrical connection of the vehicle can be opened by respectively transferring the power transistors of the at least two parallel-connected isolating switches from the conductive state to the blocking state, for example in a dangerous situation or an overload situation.
- control unit can be designed to additionally apply a (source) potential to the respective connection point between the respective two power transistors of the at least two parallel-connected isolating switches.
- the specified switching sequence determines in particular when which power transistor, the at least two parallel-connected isolating switches, is activated in the diagnostic mode of the control unit in order to convert the respective power transistor from the off state to the conductive state or from the conductive state to the off state.
- the specified switching sequence can be stored in a memory of the control unit.
- the specified switching sequence can determine for which period, ie for what length of time, a power transistor should be in the conductive state or in the off state.
- the first power transistor of the two power transistors of the circuit breaker is controlled in such a way that it is or should be in a conductive state
- the second power transistor of the two power transistors of the circuit breaker is controlled in such a way that it is or should be in a blocked state.
- the second power transistor of the two power transistors of the isolating switch is in particular controlled by the control unit in such a way that it is in a conductive state or should be, and the first power transistor of the two power transistors of the circuit breaker is controlled in such a way that it is or should be in a blocking state.
- two electrical diagnostic signals are detected in particular for each circuit breaker, in particular for the at least two power transistors of each circuit breaker, of the at least two parallel-connected circuit breakers of the circuit breaker device, the control unit being used to respectively detect the two electrical diagnostic signals of a circuit breaker controls one power transistor of the two power transistors of the circuit breaker in such a way that it is (or should be) in the conductive state and the other power transistor is (or should be) in the off state.
- the respective electrical diagnostic signal is detected by the detection unit at the respective connection point between the respective two power transistors of the at least two parallel-connected isolating switches in the diagnostic mode of the control unit for the specified switching sequence.
- the connection point of a circuit breaker is in particular an (electrically conductive) point between the at least two power transistors of a circuit breaker.
- the respective (electrical) diagnostic signal can also be understood as a respective (electrical) diagnostic potential or a respective (electrical) diagnostic voltage.
- the detection unit can each be an electrical, ie electrical have or be conductive, connection which electrically connects the respective connection point between the respective two power transistors of the at least two parallel-connected isolating switches with the diagnostic unit.
- connection point between two MOSFET power transistors as the two power transistors of a circuit breaker is a point between a drain of a first MOSFET power transistor of the two MOSFET power transistors and a source of a second MOSFET power transistor of the two MOSFETs connected in anti-series to the first MOSFET power transistor -Power transistors.
- an electrical diagnostic signal is detected for the respective, preferably each, power transistor of the two anti-series connected power transistors of a respective isolating switch.
- four diagnostic signals are detected in a circuit breaker device with two circuit breakers, each of which has (exactly) two power transistors.
- the diagnostic unit determines a respective functionality of a power transistor of the power transistors of the at least two circuit breakers connected in parallel and thus also the functionality of the circuit breaker device (at least with regard to the functionality of the power transistors of the at least two circuit breakers).
- the diagnostic unit is designed to determine a stuck-at fault of a respective power transistor of the power transistors of the at least two circuit breakers connected in parallel.
- the stuck-at error can be a stuck-at-close error or stuck-at-open error. If a power transistor has a stuck-at-close error, the faulty power transistor can no longer be transferred from the conductive state to the blocked state via the control electrode by means of the control unit.
- a power transistor has a stuck-at-open error
- the faulty power transistor can no longer be transferred from the off state to the conduction state via the control electrode by means of the control unit.
- one of the two isolating switches is permanently in an open state and the entire current is, for example, in load operation of the electrical connection or the Vehicle, through the second isolating switch or, in the case of more than two isolating switches, through the further isolating switches of the isolating switch device. This can lead to damage and/or destruction of another circuit breaker or switches.
- the diagnostic unit can have a computing unit for determining functionality and/or a memory.
- the diagnostic unit can have a microcontroller with a computing unit and with a memory, whereby the microcontroller can check or determine whether the electrical diagnostic signals detected are in a (respectively) defined or definable threshold range or not.
- the (each) defined or definable threshold ranges can be stored, for example, in the memory of the diagnostic unit.
- the threshold ranges can be dependent on an (electrical) potential or an (electrical) voltage of the electrical connection of the vehicle to be switched by the circuit breaker device.
- the diagnostic unit can further be designed to output a signal, in particular an electrical signal, in the event of a determined inoperability of at least one power transistor of the power transistors of the at least two parallel-connected circuit breakers, for example to trigger a warning signal in the vehicle and/or if necessary at least two circuit breakers connected in parallel are each switched to the open state.
- a signal in particular an electrical signal
- the electrical connection of the vehicle can be separated and damage to the vehicle, for example the circuit breaker device itself, or destruction of the vehicle can be prevented.
- the control unit has a driver for each of the at least two circuit breakers connected in parallel, in particular a common or single driver, for separately controlling the respective control electrodes of the respective two power transistors connected in anti-series.
- the control unit and thus the circuit breaker device can therefore be designed to be particularly simple.
- the respective driver is designed in particular to be a output respective (separate) control signal to the respective control electrode of the at least two anti-series connected power transistors of a circuit breaker in order to transfer a respective power transistor between the conducting state and the blocking state.
- the two power transistors of the respective isolating switch can thus be controlled separately, ie independently, of one another by means of the respective driver.
- the respective drivers can be controlled or controlled by means of a control device, for example the circuit breaker device or the vehicle, so that each of the power transistors of the at least two parallel-connected circuit breakers can be controlled separately or independently according to the specified switching sequence.
- the control unit can be switched between the diagnostic mode and a disconnection mode, or that the control unit is further designed to carry out the diagnostic mode and a disconnection mode in parallel, the control unit being in particular further configured to:
- the electrical connection of the vehicle is opened by respectively transferring the power transistors of the at least two parallel-connected disconnectors from the conductive state to the blocking state.
- the circuit breaker device can therefore be designed to be particularly simple. If the electrical connection of the vehicle is open, in particular no current flows through or via the circuit breaker of the circuit breaker device.
- the control device can receive a disconnection signal that the electrical connection of the vehicle is to be opened.
- control unit can be switched between the diagnostic mode and the separation mode by means of a switching signal.
- a control device of the disconnector device or a control device of the vehicle can output a switching signal to the control unit in order to switch the control unit between the diagnostic mode and the disconnection mode.
- the control device can output the switching signal to the control unit during load operation of the vehicle in order to switch the control unit from the disconnection mode to switch the diagnostic mode so that the functionality of the power transistors can be checked even while the vehicle is in load mode, for example while moving or standing at a traffic light.
- the separation mode is dominant over the diagnostic mode.
- the detection unit has at least one low-pass filter.
- High-frequency components of a respective electrical diagnostic signal can thus be attenuated and the electrical diagnostic signal detected in each case can be provided to the diagnostic unit in a particularly advantageously prepared form.
- the low-pass filter can in particular have at least one ohmic resistor and a capacitor as components.
- the low-pass filter is a first-order low-pass filter with (only) one ohmic resistor and one capacitor. The low-pass filter can therefore be designed to be particularly simple.
- the detection unit has at least one voltage divider.
- An electrical potential or an electrical voltage of a respective electrical diagnostic signal can thus be divided and the electrical diagnostic signal detected in each case can be provided to the diagnostic unit in a particularly advantageously prepared form.
- the voltage divider is formed by (exactly) two ohmic resistors.
- one of the two resistors for forming the voltage divider is the ohmic resistance of the low-pass filter, preferably the first-order low-pass filter, as described in the previous paragraph.
- the electrical diagnostic signal detected in each case can therefore be prepared and provided to the diagnostic unit in a particularly advantageous manner.
- the anti-series connected power transistors of the two parallel circuit breakers are each MOSFET power transistors, in particular n-MOSFET power transistors or p-MOSFET power transistors.
- MOSFET power transistors can be a special have a long service life.
- n-MOSFET power transistors can have a particularly low electrical resistance in a conductive state and are therefore particularly efficient and particularly low-loss.
- the circuit breaker device can therefore be particularly efficient.
- the power transistors of the circuit breaker device or the n-MOSFET power transistors can each be designed to carry, preferably permanently, a maximum current of at least 100 A, in particular a maximum current of at least 200 A.
- the power transistors of the isolating switch device or the n-MOSFET power transistors can each be designed to carry a current higher than the maximum current. If, for example, the respective functionality of at least the two power transistors of the at least two parallel-connected isolating switches is determined in a load operation of the electrical connection, it may be necessary that at least for a short time, for example for a maximum of two seconds, in particular for a maximum of one (1) second, preferably for a maximum of 100 milliseconds, the power transistors of a circuit breaker of the two circuit breakers must carry the entire current. This can be taken into account in the switching order.
- the power transistors of the at least two isolating switches of the isolating switches are designed in particular in such a way that they can carry a current greater than the maximum current, at least for a short time, in which case, in particular, load operation of the electrical connection of the vehicle or load operation of the vehicle can be maintained. It is of course also conceivable (as an alternative to the n-MOSFET power transistors) that the anti-series connected power transistors of the two parallel-connected isolating switches are each p-MOSFET power transistors. This means that design aspects (e.g. compactness, electromagnetic compatibility, etc.) can be addressed particularly advantageously, for example in the aviation industry.
- a circuit breaker device has a checking unit for checking the functionality of the detection unit and / or for checking the functionality of the diagnostic unit, in particular the Checking unit set up to output a check signal for checking the functionality of the detection unit and / or a check signal for checking the functionality of the diagnostic unit.
- the functionality of the detection unit and/or the functionality of the diagnostic unit can thus also be determined.
- the checking unit can impose a respective checking current on the respective connection point between the respective two power transistors of the at least two parallel-connected isolating switches in order to determine the functionality of the detection unit and/or a functionality of the diagnostic unit by means of the diagnostic unit itself.
- the functionality of the detection unit and/or the functionality of the diagnostic unit can therefore be checked particularly easily, for example by means of a target/actual comparison.
- the diagnostic unit can further be designed to output a signal, in particular an electrical signal, in the event of a determined inoperability of the detection unit and/or in the event of a determined inoperability of the diagnostic unit, in order, for example, to trigger a warning signal in the vehicle.
- the present invention shows a vehicle.
- the vehicle includes an electrical connection for electrically connecting a first unit of the vehicle to a second unit of the vehicle.
- the vehicle comprises a circuit breaker device designed according to the invention and arranged in the electrical connection.
- the vehicle is a motor vehicle, preferably a passenger car or a truck or a motorcycle. It is also conceivable that the vehicle is an aircraft, for example an airplane, or a watercraft, for example a ship.
- the first unit of the vehicle can be an energy source, for example a battery of the vehicle, and the second unit of the vehicle can be, for example, an electrical consumer.
- the electrical disconnecting device is in particular electrically or electrically connected in series in the electrical connection of the vehicle. In particular, the electrical disconnecting device divides the electrical connection of the vehicle into a first part and a second part of the electrical connection of the vehicle.
- the vehicle according to the second aspect of the invention therefore has the same advantages as have already been described for the circuit breaker device according to the first aspect of the invention.
- the present invention shows a method for determining functionality of power transistors of a circuit breaker device for switching an electrical connection of a vehicle, wherein a first side of the electrical connection has a first electrical potential and a second side of the electrical connection has a second electrical potential , and wherein the circuit breaker device is designed according to the invention.
- the method includes, as one step, a separate control of the respective control electrode of the two anti-series connected power transistors of the at least two parallel-connected isolating switches for the respective transfer of the two power transistors of the at least two parallel-connected isolating switches between the conductive state and the blocking state, the separate actuation according to a specified Switching sequence takes place, and in particular the separate control of the respective control electrode of the two anti-series connected power transistors of the at least two parallel-connected isolating switches takes place by means of the control unit.
- the method comprises, as a further step, detecting a respective electrical diagnostic signal at the respective connection point between the respective two power transistors of the at least two parallel-connected circuit breakers for the specified switching sequence, in particular the detection of the respective electrical diagnostic signal is carried out by means of the detection unit . Furthermore, the method includes, as a further step, determining the respective electrical diagnostic signal at the respective connection point between the respective two power transistors of the at least two parallel-connected circuit breakers for the specified switching sequence, in particular the detection of the respective electrical diagnostic signal is carried out by means of the detection unit . Furthermore, the method includes, as a further step, determining the respective electrical diagnostic signal at the respective connection point between the respective two power transistors of the at least two parallel-connected circuit breakers for the specified switching sequence, in particular the detection of the respective electrical diagnostic signal is carried out by means of the detection unit . Furthermore, the method includes, as a further step, determining the respective electrical diagnostic signal at the respective connection point between the respective two power transistors of the at least two parallel-connected circuit breakers for the specified switching sequence,
- Functionality of a power transistor of the two power transistors of the at least two parallel-connected circuit breakers based on the respective detected electrical diagnostic signal in particular determining the respective functionality of a power transistor of the two power transistors of the at least two parallel-connected circuit breakers and / or determining a functionality of the detection unit and / or the diagnostic unit itself by means of the diagnostic unit.
- a respective electrical diagnostic signal is detected for at least one, preferably each, of the power transistors of the at least two isolating switches connected in parallel.
- an electrical diagnostic signal for a power transistor is detected.
- the diagnostic unit determines the functionality of the respective power transistor based on the respective detected electrical diagnostic signal.
- the detection of the two electrical diagnostic signals for a respective circuit breaker of the circuit breaker device takes place in particular within less than two seconds, preferably within less than one (1) second, most preferably within less than 100 milliseconds.
- the circuit breakers which are not in an open state, can only be loaded for a short time with a current higher than the maximum current, in particular loaded non-destructively.
- the maximum current can also be understood as the peak current.
- the specified switching sequence provides that for detecting the respective electrical diagnostic signal at the respective connection point between the respective two power transistors of the at least two parallel-connected isolating switches, only one of the at least two parallel-connected isolating switches is used at the same time is in the open state.
- the control unit is designed to control the respective two power transistors of the at least two in parallel to control the switched circuit breaker in this way.
- a determination of the respective functionality of a power transistor of the two power transistors of the at least two parallel-connected circuit breakers can also be determined in a load operation of the electrical connection and/or in a load operation of the vehicle.
- the current through the isolating switch device can be carried through the other isolating switch without interrupting the load operation of the electrical connection or load operation of the vehicle.
- the load operation of the electrical connection of the vehicle at least one of the at least two parallel-connected circuit breakers is in the closed state.
- a load operation of the electrical connection of the vehicle or a load operation of the vehicle is in particular an operation of the electrical connection in which an electrical current flows via the electrical connection and the circuit breaker device, for example to supply an electrical consumer of the vehicle the electrical connection.
- the specified switching sequence provides that in order to detect a first electrical diagnostic signal and a second electrical diagnostic signal for the two power transistors of a first isolating switch, the two isolating switches are at the connection point between the two power transistors of the first isolating switch, in a first step, a first power transistor of the two anti-series connected power transistors of the first isolating switch is transferred from the conductive state to the off state, with a second line transistor of the two anti-series connected power transistors of the first isolating switch being spaced apart from the first step in a second step is transferred to the off state, and wherein in a third step, at a time interval from the second step, the first power transistor of the two anti-series connected power transistors of the first circuit breaker is transferred from the off state to the conductive state.
- all power transistors of the at least two parallel-connected circuit breakers are each in a conductive state.
- the first electrical potential of the electrical connection is at or essentially at the connection point of the first isolating switch and is used as the first electrical diagnostic signal (for the second power transistor of the first circuit breaker).
- the second electrical potential of the electrical connection is at or substantially at the connection point of the first isolating switch and is detected as the second electrical diagnostic signal (for the first power transistor of the first isolating switch).
- the diagnostic unit can determine the functionality of the first or second power transistor.
- the diagnostic unit can determine whether a stuck-at error is present. The determination can be carried out, for example, by comparing the detected first electrical diagnostic signal with the first (electrical) potential of the electrical connection or by comparing the detected second electrical diagnostic signal with the second (electrical) potential of the electrical connection.
- the detection of the first (electrical) potential of the electrical connection and/or the detection of the second (electrical) potential of the electrical connection can be done by means of a sensor, for example of the circuit breaker device or the vehicle.
- both power transistors of the Isolating switch is transferred to the conductive state and then the two electrical diagnostic signals for the second isolating switch are recorded analogously to the first isolating switch and the functionality of the power transistors of the second isolating switch is recorded.
- only one of the at least two parallel-connected circuit breakers is in the open state at the same time and the functionality of the power transistors can also be determined in a load operation of the electrical connection of the vehicle and / or a load operation of the vehicle.
- the respective detected electrical diagnostic signal is compared with the first electrical potential of the electrical connection or with the second electrical potential of the electrical connection becomes. It is therefore particularly easy to determine whether a power transistor of the two power transistors of the at least two parallel-connected circuit breakers is functional or non-functional.
- a power transistor is particularly inoperable if there is a stuck-at fault, which can be reflected in the detected electrical diagnostic signal.
- the respectively detected electrical diagnostic signals lie in a (respectively) defined or definable threshold range, in particular the defined or definable threshold ranges depending on the first electrical potential of the electrical connection or the second electrical potential of the electrical connection.
- the respective electrical diagnostic signal at the respective connection point between the respective two power transistors of the at least two parallel-connected circuit breakers for the specified switching sequence in a load operation of the electrical connection of the vehicle and / or a load operation of the vehicle is detected.
- the function check of at least the respective two power transistors of the at least two parallel-connected circuit breakers can therefore be carried out without Interruption of the load operation of the electrical connection of the vehicle or without interruption of the load operation of the vehicle.
- at least one of the at least two parallel-connected circuit breakers is in the closed state.
- the method according to the third aspect of the invention therefore has the same advantages as have already been described for the circuit breaker device according to the first aspect of the invention or the vehicle according to the second aspect of the invention.
- Fig. 4 a vehicle
- Fig. 5 shows a method
- Fig. 6 shows a method.
- identical reference numbers are used for the same technical features of different exemplary embodiments.
- Fig. 1 shows schematically a circuit breaker device 100 for switching an electrical connection 210 of a vehicle 200 (see, for example, Fig. 4).
- the electrical connection 210 has, in particular, a first electrical potential P1 on a first side of the electrical connection 210 and a second electrical potential P2 on a second side of the electrical connection.
- the circuit breaker device 100 comprises at least two circuit breakers 11, 12 connected in parallel, each with a closed state and an open state, each of the at least two circuit switches 11, 12 connected in parallel having two power transistors 20a, 20b connected in anti-series, each with a control electrode 21.
- the circuit breaker device 100 comprises a control unit 30 with at least one diagnostic mode, the control unit 30 being set up to control a respective control electrode 21 of the power transistors 20a, 20b of the at least two parallel-connected circuit breakers 11, 12 in the diagnostic mode in accordance with a defined switching sequence for a respective transfer of the To separately control power transistors 20a, 20b of the at least two parallel-connected isolating switches 11, 12 between a conductive state LZ and a blocked state SZ.
- the circuit breaker device 100 comprises a detection unit 40, wherein the detection unit 40 is set up to generate a respective electrical diagnostic signal at a respective connection point S1, S2 between the respective two power transistors 20a, 20b of the at least two parallel-connected circuit breakers 11, 12 in the diagnostic mode the control unit 30 for the specified switching sequence.
- an additional (source) potential can be applied or applied, for example by means of the control unit 30 (not shown).
- the circuit breaker device 100 includes a diagnostic unit 50, wherein the diagnostic unit 50 is at least set up to use the respective detected electrical diagnostic signal at the respective connection point S1, S2 between the respective two power transistors 20a, 20b of the at least two parallel-connected circuit breakers 11, 12 to determine a respective functionality of a power transistor 20a, 20b of the power transistors 20a, 20b of the at least two parallel-connected circuit breakers 11, 12.
- the circuit breaker device 100 shown in FIG. 1 is additional, i.e. H. optionally, designed in such a way that the control unit 30 has a driver 31, 32 for each of the at least two parallel-connected isolating switches 11, 12 for separately controlling the respective control electrodes 21 of the respective two anti-series connected power transistors 20a, 20b.
- the circuit breaker device 100 shown in FIG. 1 is additional, i.e. H. optionally, designed in such a way that the control unit 30 can be switched between the diagnostic mode and a separation mode, the control unit 30 also being set up to establish the electrical connection 210 of the vehicle 200 in the separation mode by respectively transferring the power transistors 20a, 20b of the at least two in parallel to open the switched circuit breaker 11, 12 from the conductive state to the blocked state. It is also conceivable that while the control unit 30 is in the diagnostic mode, the isolating switch device 100 also has or ensures a isolating function, with the isolating function in particular being dominant.
- the isolating function is in particular a function of the isolating switch device 100, in which the electrical connection 210 of the vehicle 200 can be opened by a respective transfer of the power transistors 20a, 20b of the at least two parallel-connected isolating switches 11, 12 from the conductive state to the blocked state, for example in a Dangerous situation.
- the circuit breaker device 100 shown in Fig. 1 is additionally, ie optionally, designed such that the circuit breaker device 100 has a checking unit 60 for checking the functionality of the detection unit 40 and/or for checking the functionality of the diagnostic unit 50, the checking unit 60 being set up for this purpose is, a check signal for checking the functionality of the detection unit 40 and/or for that To check the functionality of the diagnostic unit 50.
- the checking unit 60 can apply a respective checking current for checking the respective functionality to the respective connection point S1, S2 between the respective two power transistors 20a, 20b of the at least two parallel-connected isolating switches 11, 12.
- Fig. 2 discloses a low-pass filter and a voltage divider of a detection unit 40, as shown, for example, in Fig. 1.
- the voltage divider is formed by two ohmic resistors, with one of the two ohmic resistors simultaneously serving to form a low-pass filter.
- a respective electrical diagnostic signal detected at the respective connection point S1, S2 between the respective two power transistors 20a, 20b of the at least two parallel-connected isolating switches 11, 12 can be particularly advantageously provided to the diagnostic unit 50.
- Fig. 3 discloses part of a circuit breaker device 100, as has already been described in particular in relation to Fig. 1.
- the isolating switch device 100 comprises at least two isolating switches 11 connected in parallel, each of the at least two isolating switches 11, 12 connected in parallel having two anti-series connected n-MOSFET power transistors 20a, 20b, each with a control electrode 21.
- a respective connection point S1, S2 between respective power transistors 20a, 20b of the at least two parallel-connected isolating switches 11, 12 is connected to a detection unit 40 or a detection unit 40 and a checking unit 60 (not shown; see, for example, FIG. 1).
- the first power transistor 20a of the two power transistors 20a is used to detect a (first) electrical diagnostic signal for the first power transistor 20a of a second isolating switch 12 of the two isolating switches 11, 12 at the connection point S2 between the respective two power transistors 20a, 20b of the second isolating switch 12 , 20b of the second isolating switch 12 controlled in such a way that it is or should be in a conductive state LZ, and the second Power transistor 20b of the two power transistors 20a, 20b of the second isolating switch 12 is controlled in such a way that it is or should be in a blocking state.
- the two power transistors 20a, 20b of the first isolating switch 11 are controlled in such a way that they are or should be in a conductive state LZ.
- the (first) electrical diagnostic signal for the first power transistor 20a of the second isolating switch 12 can thus be detected.
- a (second) electrical diagnostic signal for the second power transistor 20b of the second isolating switch 12 can be detected in an analogous manner become.
- a (first) electrical diagnostic signal can also be detected for the first power transistor 20a of the first isolating switch 11 or a (second) electrical diagnostic signal for the second power transistor 20b of the first isolating switch 11, in particular during load operation of the electrical connection 210 .
- the vehicle 200 includes an electrical connection 210 for electrically connecting a first unit 201 of the vehicle 200 to a second unit 202 of the vehicle 200. Furthermore, the vehicle 200 comprises a circuit breaker device 100 arranged in the electrical connection 210, the circuit breaker device being designed according to the invention (see, for example, FIG. 1 or FIG. 2 or FIG. 3).
- circuit breaker device 100 discloses a method for determining a respective functionality of power transistors 20a, 20b of a circuit breaker device 100 for switching an electrical connection 210 of a vehicle 200, wherein a first side of the electrical connection 210 has a first electrical potential P1 and a second side of the electrical connection 210 has a second electrical potential P2.
- the circuit breaker device 100 is designed in particular according to the invention, for example according to FIG. 1 or FIG. 2 or FIG two in parallel switched isolating switches 11, 12 for the respective transfer of the two power transistors 20a, 20b of the at least two parallel-connected isolating switches 11, 12 between the conducting state LZ and the blocking state SZ, the separate control taking place in accordance with a defined switching sequence.
- the method includes, as a further step, detecting 340 a respective electrical diagnostic signal at the respective connection point S1, S2 between the respective two power transistors 20a, 20b of the at least two parallel-connected circuit breakers 11, 12 for the specified switching sequence. Furthermore, the method includes, as a further step, determining 360 the respective functionality of a power transistor 20a, 20b of the two power transistors 20a, 20b of the at least two parallel-connected circuit breakers 11, 12 based on the respective detected electrical diagnostic signal.
- the respective detected electrical diagnostic signal can be compared with the first electrical potential P1 of the electrical connection or with the second electrical potential P2 of the electrical connection become 359.
- FIG. 6 discloses a method for determining a respective functionality of power transistors 20a, 20b of a circuit breaker device 100 for switching an electrical connection 210 of a vehicle 200, as has already been described in particular with respect to FIG. 5.
- a first step is carried out here
- Power transistor 20a, 20b of the two anti-series connected power transistors 20a, 20b of the first isolating switch 11, 12 are transferred from the conductive state LZ to the off-state SZ 340a, with a second line transistor 20a, 20b of the two anti-series connected ones being spaced apart from the first step in a second step
- Power transistors 20a, 20b of the first isolating switch 11, 12 are transferred to the blocking state SZ 340b, and in a third step at a time interval from
- the respective electrical diagnostic signal at the respective connection point S1, S2 between the respective two power transistors 20a, 20b of the at least two parallel-connected circuit breakers 11, 12 can be detected 341 for the specified switching sequence in a load operation of the electrical connection 210, preferably In the load operation of the electrical connection 210, only one of the at least two parallel-connected circuit breakers 11, 12 is in the open state at the same time.
Landscapes
- Keying Circuit Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022118046.8A DE102022118046A1 (de) | 2022-07-19 | 2022-07-19 | Trennschaltervorrichtung, Fahrzeug sowie Verfahren |
| PCT/EP2023/068821 WO2024017668A1 (de) | 2022-07-19 | 2023-07-07 | Trennschaltervorrichtung, fahrzeug sowie verfahren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4559093A1 true EP4559093A1 (de) | 2025-05-28 |
Family
ID=87202129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23739549.6A Pending EP4559093A1 (de) | 2022-07-19 | 2023-07-07 | Trennschaltervorrichtung, fahrzeug sowie verfahren |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4559093A1 (de) |
| CN (1) | CN119586006A (de) |
| DE (1) | DE102022118046A1 (de) |
| WO (1) | WO2024017668A1 (de) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6867780B2 (ja) * | 2016-10-28 | 2021-05-12 | 矢崎総業株式会社 | 半導体スイッチ制御装置 |
-
2022
- 2022-07-19 DE DE102022118046.8A patent/DE102022118046A1/de active Pending
-
2023
- 2023-07-07 CN CN202380054417.3A patent/CN119586006A/zh active Pending
- 2023-07-07 EP EP23739549.6A patent/EP4559093A1/de active Pending
- 2023-07-07 WO PCT/EP2023/068821 patent/WO2024017668A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022118046A1 (de) | 2024-01-25 |
| CN119586006A (zh) | 2025-03-07 |
| WO2024017668A1 (de) | 2024-01-25 |
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