WO2022263126A1 - Fahrzeugbordnetz mit hochvoltabschnitt und sich hieraus erstreckenden, mehreren niedervoltabschnitten, die über eine sicherheitseinrichtung miteinander verbunden sind - Google Patents
Fahrzeugbordnetz mit hochvoltabschnitt und sich hieraus erstreckenden, mehreren niedervoltabschnitten, die über eine sicherheitseinrichtung miteinander verbunden sind Download PDFInfo
- Publication number
- WO2022263126A1 WO2022263126A1 PCT/EP2022/064055 EP2022064055W WO2022263126A1 WO 2022263126 A1 WO2022263126 A1 WO 2022263126A1 EP 2022064055 W EP2022064055 W EP 2022064055W WO 2022263126 A1 WO2022263126 A1 WO 2022263126A1
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- WO
- WIPO (PCT)
- Prior art keywords
- voltage
- low
- safety device
- section
- electrical system
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for DC mains or DC distribution networks
- H02J1/08—Three-wire DC power distribution systems; Systems having more than three wires
- H02J1/082—DC supplies with two or more different DC voltage levels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/90—Vehicles comprising electric prime movers
- B60Y2200/91—Electric vehicles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2105/00—Networks for supplying or distributing electric power characterised by their spatial reach or by the load
- H02J2105/30—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles
- H02J2105/33—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles exchanging power with road vehicles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2105/00—Networks for supplying or distributing electric power characterised by their spatial reach or by the load
- H02J2105/30—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles
- H02J2105/33—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles exchanging power with road vehicles
- H02J2105/37—Networks for supplying or distributing electric power characterised by their spatial reach or by the load the load networks being external to vehicles, i.e. exchanging power with vehicles exchanging power with road vehicles exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV]
Definitions
- Vehicle electrical system with a high-voltage section and a number of low-voltage sections extending therefrom, which are connected to one another via a safety device
- high-voltage components ie components that carry high-voltage potentials during normal operation
- low-voltage components and low-voltage lines which are routed from the high-voltage vehicle electrical system, in the spatial area in which there are also components with high-voltage potential. If an error occurs within the high-voltage range, so that these low-voltage lines carry a high-voltage potential, then there is a greater risk of electric shock, since the low-voltage lines are not insulated and secured to the same extent as the high-voltage lines.
- a first low-voltage section which extends out of the high-voltage area, is first connected to a safety device from which a second low-voltage section extends away.
- the safety device can use measures such as galvanic isolation or a voltage-limiting element to ensure that in the event of an insulation fault between the first low-voltage section and the high-voltage area, dangerous voltages do not spread beyond the safety device, so that the safety device blocks such dangerous voltages from the second, further low-voltage section.
- a first low-voltage section can also carry high-voltage voltages in the event of faults within the high-voltage range.
- a vehicle electrical system with a high-voltage area, a first low-voltage section and a second low-voltage section is therefore described.
- the first low-voltage section extends out of the high-voltage area.
- the low-voltage sections refer in particular to physical sections in which low-voltage components and/or low-voltage lines are located.
- the second low-voltage section does not extend directly out of the high-voltage area, but is (indirectly) connected to the first low-voltage section.
- the first low-voltage section can be provided with a high-voltage potential of the high-voltage range.
- the vehicle electrical system includes a safety device.
- the second low-voltage section is connected to the first low-voltage section via this. It there is no further (galvanically conductive) connection between the second low-voltage section and the first low-voltage section.
- the safety device is able to block corresponding, dangerous high-voltage potentials that extend from the high-voltage area into the first low-voltage section in relation to the second low-voltage section.
- the second low-voltage section is thus protected by the safety device from high-voltage potentials that are transmitted from the high-voltage area to the first low-voltage section as a result of an insulation fault.
- the safety device has a galvanic isolation and/or a voltage limiting element. The galvanic isolation then exists within the safety device between the first and the second low-voltage section.
- the voltage limiting element is provided between a potential of the first and/or second low-voltage section and a discharge potential such as ground or chassis and is activated when the relevant low-voltage section has a voltage relative to the discharge potential that is above a voltage limit.
- the safety device can also have both of the safety measures mentioned.
- the safety device also physically separates the second low-voltage section from the first low-voltage section.
- the safety device is preferably located between the first and the second low-voltage section and forms a safety area that extends between the first and the second low-voltage section. These areas can be defined by boundaries such as enclosures and the like.
- the first low-voltage section encompasses all of the low-voltage lines that are routed out of the high-voltage area.
- the second low-voltage area encompasses all lines and/or components that are functionally connected to the relevant lines and/or components of the first low-voltage section, that is to say in particular in a signal-transmitting or supply-voltage-transmitting manner.
- Several safety devices can be provided, each connected to a part of the first low-voltage lines are connected, preferably all low-voltage lines that extend out of the high-voltage range are connected to one of the safety devices, so that all such low-voltage lines are protected or end at a safety device.
- the vehicle electrical system can have a low-voltage device, for example a control unit for activating a component of the high-voltage range or for acquiring sensor data that originates from within the high-voltage range.
- the low-voltage device can have a communication device, such as a bus communication module, in particular a CAN bus slave or CAN bus master.
- the low-voltage device can, for example, also be a display or an input instrument that is functionally or signal-transmittingly connected to a component within the high-voltage range, for example a voltage display or a display device that can also display the voltage in the high-voltage range, among other things.
- the low-voltage device can also be a low-voltage supply that supplies a component within the high-voltage range (via the first and second low-voltage section) with a low-voltage voltage.
- the low-voltage device is connected to the second low-voltage section.
- the second low-voltage section connects the low-voltage device to the safety device.
- the low-voltage section is provided between the low-voltage device and the safety device.
- the low-voltage device is connected to the first low-voltage section via the second low-voltage section and the subsequent safety device. This in turn leads to the high-voltage range.
- the first low-voltage section, the safety device and the second low-voltage section are thus provided between the low-voltage device and the high-voltage area (in particular starting from the high-voltage section in this order).
- the low-voltage device Via the second low-voltage section, the safety device and the first low-voltage section, the low-voltage device is connected to the high-voltage area in a signal-transmitting and/or voltage-supply manner or to components that are located within the high-voltage area. These components are particular Low-voltage components that are in the high-voltage area.
- a galvanically isolating data connection is referred to as a signal-transmitting connection.
- the voltage-supplying connection can also be galvanically isolating, specifically in that the safety device has a galvanically isolating element in the form of a transformer (galvanically isolating).
- the galvanic isolation can be provided, for example, by a galvanically isolating transformer of the safety device, one side (primary side, for example) of which is connected to the first low-voltage section and the second side (secondary side) of which is connected to the second low-voltage section.
- an optocoupler can be used as galvanic isolation, which connects the two low-voltage sections to one another in a signal-transmitting manner.
- Said transformer may be a signal transmitting transformer, or may be a utility power transmitting transformer, or both (e.g. in the case of power line communications).
- the low-voltage sections have lines, in particular signal lines, communication lines, sensor lines and/or low-voltage supply lines.
- the cables are designed for an operating voltage of less than 60 V and therefore have no high-voltage insulation.
- the cable insulation is designed for low-voltage and not for high-voltage applications.
- the first low-voltage section has lines that connect one or more low-voltage components that are in the high-voltage range to the safety device. This connection is galvanically conductive. In the event of a fault within the high-voltage range, a line of the first low-voltage section can therefore have a high-voltage potential, with this being routed as far as the safety device at most. This then blocks the high-voltage potential.
- the second low-voltage section also has lines that are connected to the safety device.
- the lines of the second low-voltage section are thus connected to the lines of the first low-voltage section via the safety device.
- the connection made by the safety device in this way is galvanically isolating.
- Signal lines are therefore connected via a galvanically isolating transformer or preferably connected to a data transmission via optocouplers.
- Low-voltage supply lines can be connected via a galvanically isolating transformer.
- the safety device connects each line of the first low-voltage section to the relevant line of the second low-voltage section in a galvanically isolating manner.
- Each line of the first low-voltage section has a counterpart in the second low-voltage section, so that each low-voltage line of the first low-voltage section that is in the high-voltage range has a counterpart in the second low-voltage section.
- the lines can be implemented as wires and/or as conductor tracks, in particular from flex foil circuit boards.
- the vehicle electrical system includes, in particular, one or more low-voltage devices that are connected to the safety device via the second low-voltage section.
- the low-voltage device can be a display, controller, HMI device, input, or the like.
- the low-voltage device can be in a space, or bordering on it, to which the user has easy access, such as the interior of the vehicle, the engine compartment, the trunk and the like.
- Another aspect is the spatial separation of the two low-voltage sections by the safety device.
- one aspect is to provide the first low-voltage section (which can carry a high-voltage potential in the event of a fault) in a first space that is not readily accessible to the user. Provision can therefore be made for the first low-voltage section to be provided in a first space which is protected from external access (by the vehicle user) by a continuous boundary.
- the continuous boundary can be provided by covers or the like which cannot be opened by the user during normal use of the vehicle and which in particular require a tool. This ensures that the user does not have access to the low-voltage section during normal use of the vehicle. This can prevent accidental contact.
- the continuous delimitation of the low-voltage section can be provided by a plastic cover or a metallic (earthed) cover, and by walls which, together with the cover, completely enclose the space. These walls preferably have no opening or just openings that can only be opened with tools and not easily. In summary, the first room is closed and cannot be opened in normal operation, especially without tools.
- the second low-voltage section is provided in a second space.
- This can be open and is in particular freely accessible from the outside.
- the second space is readily accessible to the user in normal use, particularly the engine compartment, passenger compartment, trunk and the like.
- a 12 V battery or 12 V devices can be provided in the engine compartment in the second space. Opening the hood gives access to these components without the need for another tool.
- the safety device is preferably provided in its own housing. This housing is located between the first and second room. In particular, the first room abuts directly against its own case.
- the second space also preferably abuts the housing of the safety device, but the first space remains separate from the second space. The physical separation of the first room from the second room enables effective protection by the security device.
- the safety device in a housing that is located in the first room.
- the housing in which the safety device is provided can be located on an inside of the first space. This is in particular the inside of an outer wall of the first room or an outer wall of the boundary of the first room.
- the second low-voltage section for connection to the safety device can then be routed through the wall that represents this inner side or through this outer wall. The fact that the safety device is located directly on an outer wall of the first room ensures that the second low-voltage section has no connection to the first low-voltage section.
- the safety device can be provided in particular in a housing that is located on the inside of an outer wall of a high-voltage housing in which not only the high-voltage area, but also the first low-voltage section is provided. In particular, this applies to the entire first low-voltage section, which is physically and electrically isolated from the entire second low-voltage section by the safety device.
- the safety device has at least one voltage-limiting element
- this can be provided between low-voltage potentials or lines of the first and/or second section and a discharge potential.
- the relevant current would be discharged to the discharge potential.
- the leakage potential is in particular ground or the chassis.
- the voltage-limiting element can be implemented as a varistor, gas discharge tube, spark gap, protective diode, thyristor circuit, TVS thyristor, DIAG, Zener diode or suppressor diode or four-layer diode.
- voltage limiting elements can be provided in the safety device in order to protect low-voltage potentials against different polarities of high-voltage voltages or to secure several lines.
- the two low-voltage sections are not necessarily electrically isolated. Rather, it can be provided that when using voltage limiting elements, the lines of the first low-voltage section are conductively coupled to the lines of the second low-voltage section.
- the interposition of the safety device between the two low-voltage sections gives rise to the possibility that if the voltage in the first low-voltage range is too high, this voltage will be reduced or limited by the activation of the voltage-limiting element.
- the second low-voltage section remains protected as a result of the current flowing away, which results from the excessively high voltage in the first low-voltage area.
- Resistors or the like can be provided in the safety device, which connect the lines of the first low-voltage range to the lines of the second low-voltage range, the voltage limiting elements are preferably provided at the end of the lines of the second low-voltage range, which are connected to the relevant resistors.
- the maximum current that can be transmitted is then limited by the resistors that connect the two low-voltage areas in series, and at the same time if the current is too high (due to high-voltage errors), the current limited by the resistors is diverted to a reference potential.
- the resistors that connect the two low-voltage areas to one another are preferably designed in such a way that the lines can fulfill their function in error-free operation, ie are set up to transmit the signals or to transmit the supply voltage.
- the vehicle electrical system can have a low-voltage device which is connected to the safety device via the second low-voltage section.
- the low-voltage device can provide sensor detection, actuation, a communication device or monitoring, these relating to low-voltage components that are arranged in the high-voltage area.
- the low-voltage device is therefore provided outside the high-voltage range, but is functionally connected (data-transmitting and/or supply voltage-transmitting) to a low-voltage component that is located within the high-voltage range.
- the low-voltage device itself can be provided in a room that is easily accessible for the user with normal use. This applies, for example, to operating elements of an HMI interface or displays that are located on the dashboard or in the passenger compartment in general. This also applies to low-voltage devices that are located in the engine compartment (or in the trunk) and to which the user has easy access when used properly (after opening the relevant passenger compartment door, trunk lid or bonnet).
- the safety device preferably has an error output.
- the safety device is set up to output a high-voltage error to the error output if the voltage in at least one of the low-voltage sections exceeds a voltage limit. This can also apply to a voltage that is only present on one conductor of the sections mentioned.
- the tension relates refer to a leakage potential such as ground or chassis.
- the voltage limit is preferably less than 60 V, for example 50, 40, 35 or 25 V.
- the voltage limit is above the maximum level of all lines in the low-voltage section that occur in error-free operation.
- the vehicle electrical system can have discharging or isolating devices that are functionally connected to the error signal output.
- a high-voltage fault occurs when a voltage in a low-voltage range exceeds a voltage limit of, for example, 60 V DC or 30 Vrms AC.
- the prefix “high-voltage” indicates that the component in question is designed for an operating voltage of more than 60 V, at least 100 V, at least 200 V, at least 400 V, at least 600 V or at least 800 V, particularly with regard to the insulation .
- the prefix “low-voltage-” indicates that the component in question is designed for an operating voltage of less than 60 V, not more than 48 V, or not more than 24 V or 12 V, particularly with regard to insulation.
- This voltage information relates to a DC voltage, but can also relate to the level of an effective voltage or amplitude of an AC voltage.
- a motor vehicle with a purely electric drive or with a hybrid drive that has an electric drive can have a vehicle electrical system as described here.
- a high-voltage traction battery and a high-voltage traction drive can be provided in the motor vehicle, both of which are connected to the high-voltage range of the vehicle electrical system described here.
- the high-voltage traction accumulator and the high-voltage traction drive are then preferably part of the vehicle electrical system described here.
- FIG. 1 serves as an example for explaining the objects described here.
- FIG. 1 shows a high-voltage area HV in which at least one high-voltage component HVK is located.
- the high-voltage area is completed by a high-voltage housing.
- low-voltage components K from which lines L1 of a first low-voltage section N1 emanate.
- the low-voltage section N1 and thus also its lines L1 extend from the low-voltage components (within the high-voltage range) out of the high-voltage range HV.
- the first low-voltage section N1 encloses a space R1 which, when used properly, cannot be accessed from the outside by the vehicle user.
- a cover A can be provided, for example, which closes the first space R1 of the low-voltage section N1.
- the cover A closes this space R1 in such a way that the user has no access to the space R1 without tools or with proper use.
- a safety device S connects to the first low-voltage area N1. This has a housing G.
- the safety device S is in turn followed by a second low-voltage section N2, which has lines L2. These lead to a low-voltage device that is outside the high-voltage range.
- the low-voltage device NG is thus functionally connected to the low-voltage component K (which is within the high-voltage range HV).
- the low-voltage component K can thus communicate with the low-voltage device NG, can be supplied with voltage by it and/or can be controlled by it. Furthermore, the component K can also transmit data such as sensor data to the low-voltage device.
- the safety device S includes a galvanic isolation T and/or a voltage-limited element SB.
- a galvanic isolation T optocouplers and/or galvanically isolating transformers are used, for example.
- the galvanic isolation T is only shown symbolically by means of a dashed line that defines the galvanic isolation as a functional feature. Shown as an example
- Voltage limiting element SB is a varistor that has a line within the Safety device S with a reference potential or leakage potential M (ground) connects. If the voltage in question is too high compared to ground, then the voltage limiting element SB becomes active and diverts the current in question in the direction of ground. As a result, the second low-voltage section N2 is protected from excessively high voltages. In particular, it is possible for the safety device S to detect a current flow through the voltage-limiting element SB in order to conclude that there is a high-voltage error based on the current flow. This is then sent to the error signal output F of the safety device S in the form of a signal.
- the voltage-limiting element SB not only allows the reduction of the high-voltage voltage caused by errors, but also the detection of the high-voltage error. Even if only a galvanic isolation T is provided, the potentials of the lines L1 of the first low-voltage section N1 can be monitored in order to emit a corresponding error signal at the error output F when a voltage limit is exceeded.
- the safety device S is set up for this.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020247001280A KR102829978B1 (ko) | 2021-06-18 | 2022-05-24 | 고전압 구역과 이로부터 연장되고 안전 디바이스를 통해 연결된 복수의 저전압 구역을 갖는 차량 전기 시스템 |
| US18/570,413 US12447915B2 (en) | 2021-06-18 | 2022-05-24 | Vehicle electrical system with high-voltage zone and a plurality of low-voltage zones that extend therefrom and are connected via a safety device |
| CN202280043446.5A CN117545666A (zh) | 2021-06-18 | 2022-05-24 | 具有高电压区段和由此延伸出的、通过安全装置彼此连接的多个低电压区段的车辆车载电网 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021206270.9 | 2021-06-18 | ||
| DE102021206270.9A DE102021206270A1 (de) | 2021-06-18 | 2021-06-18 | Fahrzeugbordnetz mit Hochvoltabschnitt und sich hieraus erstreckenden, mehreren Niedervoltabschnitten, die über eine Sicherheitseinrichtung miteinander verbunden sind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022263126A1 true WO2022263126A1 (de) | 2022-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2022/064055 Ceased WO2022263126A1 (de) | 2021-06-18 | 2022-05-24 | Fahrzeugbordnetz mit hochvoltabschnitt und sich hieraus erstreckenden, mehreren niedervoltabschnitten, die über eine sicherheitseinrichtung miteinander verbunden sind |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12447915B2 (de) |
| KR (1) | KR102829978B1 (de) |
| CN (1) | CN117545666A (de) |
| DE (1) | DE102021206270A1 (de) |
| WO (1) | WO2022263126A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023122522A1 (de) | 2023-08-23 | 2025-02-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Vorrichtung zur elektrischen Verbindung eines mit einem Öl gekühlten elektrischen Geräts, die Vorrichtung umfassende Batterie, Verfahren zur Herstellung der Vorrichtung und der Batterie |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12122251B2 (en) | 2022-09-28 | 2024-10-22 | BorgWarner US Technologies LLC | Systems and methods for bidirectional message architecture for inverter for electric vehicle |
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| EP1291998A2 (de) * | 2001-08-24 | 2003-03-12 | Audi Ag | Vorrichtung zum Erkennen eines Fehlerfalles bei Zwei- oder Mehrspannungsbordnetzen |
| DE102010030452A1 (de) * | 2009-06-25 | 2011-05-05 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Weckschaltungen, -geräte und -verfahren für galvanische Isolatoren |
| US20110115287A1 (en) * | 2009-11-19 | 2011-05-19 | Anden Co., Ltd. | Vehicular power supply circuit |
| DE102018211007B3 (de) * | 2018-07-04 | 2019-08-22 | Bayerische Motoren Werke Aktiengesellschaft | Sicherheitsschaltvorrichtung für eine Hochvoltbatterie eines Kraftfahrzeugs, Hochvoltbatterie, Bordnetzsystem sowie Kraftfahrzeug |
| DE102018210943A1 (de) * | 2018-07-03 | 2020-01-09 | Leoni Bordnetz-Systeme Gmbh | Bordnetz für ein Fahrzeug sowie Fahrzeug |
| DE102019105504A1 (de) * | 2019-03-05 | 2020-09-10 | Audi Ag | Energienetz für ein Kraftfahrzeug und Verfahren zum Betreiben eines Energienetzes für ein Kraftfahrzeug |
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| DE102013214835A1 (de) | 2013-07-30 | 2015-02-05 | Robert Bosch Gmbh | Überspannungsschutz für ein Mehrspannungsbordnetz |
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| JP7006251B2 (ja) * | 2017-12-25 | 2022-01-24 | トヨタ自動車株式会社 | 電気機器の車載構造 |
| DE102019113763A1 (de) * | 2019-05-23 | 2020-11-26 | Bayerische Motoren Werke Aktiengesellschaft | Schutzschaltung für ein Hochvoltbordnetz eines Kraftfahrzeugs, Hochvoltbordnetz sowie Kraftfahrzeug |
| DE102019211727A1 (de) * | 2019-08-05 | 2021-02-11 | Audi Ag | Verfahren zum Betreiben eines elektrisch antreibbaren Kraftfahrzeugs sowie eine Vorrichtung hierzu |
| DE102019215517B3 (de) * | 2019-10-10 | 2021-01-14 | Volkswagen Aktiengesellschaft | Elektrisches Bordnetz sowie Verfahren zum Betrieb eines solchen Bordnetzes |
| DE102020004730A1 (de) | 2020-08-05 | 2020-11-05 | Daimler Ag | Verfahren zum sicheren Betreiben eines mehrere Schaltelemente aufweisenden Wechselrichters sowie Steuereinrichtung hierfür |
-
2021
- 2021-06-18 DE DE102021206270.9A patent/DE102021206270A1/de active Pending
-
2022
- 2022-05-24 CN CN202280043446.5A patent/CN117545666A/zh active Pending
- 2022-05-24 WO PCT/EP2022/064055 patent/WO2022263126A1/de not_active Ceased
- 2022-05-24 US US18/570,413 patent/US12447915B2/en active Active
- 2022-05-24 KR KR1020247001280A patent/KR102829978B1/ko active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1291998A2 (de) * | 2001-08-24 | 2003-03-12 | Audi Ag | Vorrichtung zum Erkennen eines Fehlerfalles bei Zwei- oder Mehrspannungsbordnetzen |
| DE102010030452A1 (de) * | 2009-06-25 | 2011-05-05 | Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. | Weckschaltungen, -geräte und -verfahren für galvanische Isolatoren |
| US20110115287A1 (en) * | 2009-11-19 | 2011-05-19 | Anden Co., Ltd. | Vehicular power supply circuit |
| DE102018210943A1 (de) * | 2018-07-03 | 2020-01-09 | Leoni Bordnetz-Systeme Gmbh | Bordnetz für ein Fahrzeug sowie Fahrzeug |
| DE102018211007B3 (de) * | 2018-07-04 | 2019-08-22 | Bayerische Motoren Werke Aktiengesellschaft | Sicherheitsschaltvorrichtung für eine Hochvoltbatterie eines Kraftfahrzeugs, Hochvoltbatterie, Bordnetzsystem sowie Kraftfahrzeug |
| DE102019105504A1 (de) * | 2019-03-05 | 2020-09-10 | Audi Ag | Energienetz für ein Kraftfahrzeug und Verfahren zum Betreiben eines Energienetzes für ein Kraftfahrzeug |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023122522A1 (de) | 2023-08-23 | 2025-02-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Vorrichtung zur elektrischen Verbindung eines mit einem Öl gekühlten elektrischen Geräts, die Vorrichtung umfassende Batterie, Verfahren zur Herstellung der Vorrichtung und der Batterie |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102829978B1 (ko) | 2025-07-03 |
| US20240270186A1 (en) | 2024-08-15 |
| CN117545666A (zh) | 2024-02-09 |
| KR20240021903A (ko) | 2024-02-19 |
| US12447915B2 (en) | 2025-10-21 |
| DE102021206270A1 (de) | 2022-12-22 |
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