WO2006082125A1 - Reseau de bord pour des consommateurs lies a la securite - Google Patents

Reseau de bord pour des consommateurs lies a la securite Download PDF

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Publication number
WO2006082125A1
WO2006082125A1 PCT/EP2006/050198 EP2006050198W WO2006082125A1 WO 2006082125 A1 WO2006082125 A1 WO 2006082125A1 EP 2006050198 W EP2006050198 W EP 2006050198W WO 2006082125 A1 WO2006082125 A1 WO 2006082125A1
Authority
WO
WIPO (PCT)
Prior art keywords
safety
relevant
electrical system
consumers
voltage
Prior art date
Application number
PCT/EP2006/050198
Other languages
German (de)
English (en)
Inventor
Wolfgang Mueller
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2006082125A1 publication Critical patent/WO2006082125A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/46—The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles

Definitions

  • the invention relates to a vehicle electrical system for safety-relevant consumers according to the preamble of claim 1.
  • Bordnetze for supplying the electrical consumers in the motor vehicle today usually consist of a generator, a lead-acid battery, a fuse and relay box and a wiring harness for the distribution of electrical energy.
  • Safety-relevant consumers depend on the reliable supply of electrical energy for their full functionality and therefore need an electrical vehicle electrical system with high reliability. For this reason, today's conventional electrical systems for the supply of x-by-wire systems can only be used if certain additional measures are taken. Such electrical systems, which are also suitable for safety-relevant consumers are known for example from DE 102 51 589 Al. In these known on-board networks, safety-relevant consumers, which make high demands on the availability of electrical energy, are supplied redundantly via complex circuits. For this purpose, each consumer is supplied with a supply voltage via two different supply paths. If the supply voltage supplied via one of the supply paths fails, the further function of the consumer is still ensured by the supply voltage supplied via the second supply value. Thus, in case of failure, no discharge of the batteries used, both supply paths are over Decoupling members, such as switches or diodes separated from each other. As safety-relevant consumers, for example, x-by-wire consumers are mentioned.
  • the vehicle electrical system according to the invention for safety-relevant consumers with the features of claim 1 has over the features of the prior art has the advantage that a reliable power supply for safety-relevant consumers by means of a very simple circuit arrangement is achieved.
  • the simple vehicle electrical system according to the invention enables this operation of consumers who place high demands on safety and reliability of the electrical power supply.
  • the vehicle electrical system architecture consists of two subnetworks coupled to one another, wherein a subnetwork represents the classic vehicle electrical system that is customary today and the second onboard electrical system is a freely scalable auxiliary electrical system.
  • the auxiliary electrical system is coupled via one or more DC-DC converter (DC / DC converter) to the base board network.
  • DC-DC converter DC / DC converter
  • one or more additional batteries are used for buffering, which can be charged by the DC-DC converter used.
  • the safety-relevant consumer or the safety-relevant consumers are normally supplied with electrical energy by the base electrical system.
  • the auxiliary on-board network only supplies the safety-relevant consumer when the base on-board network is no longer capable of doing so and can supply no or only insufficiently large amount of electrical energy.
  • the voltage converter is an advantageous decoupling of the load-dependent voltage level of the base vehicle network from the auxiliary electrical system and the additional batteries.
  • the charging strategy of the additional batteries thus does not depend in an advantageous manner on the voltage level of the base-board network and can therefore be optimally adapted to the batteries used.
  • it is also possible to have different ones Use of battery types in the auxiliary electrical system making it possible to achieve a diverse redundancy in terms of energy storage and thus increase the reliability of the electrical system architecture even further. Since the additional batteries are used only for not fully functional baseboard network to supply the safety-relevant consumer, these batteries of the auxiliary electrical system are cycled only very slightly, resulting in a long life of the batteries of the auxiliary electrical system.
  • the voltage converter advantageously only compensate for the self-discharge of the additional batteries. Therefore, it only has to be designed for a very low nominal output, resulting in a very cost-effective solution.
  • an encapsulation of errors in components as well as in the sub-networks can be carried out in an advantageous manner. Even when the base-board network is not functional, the safety-relevant consumer can continue to be reliably supplied. With regard to the vehicle electrical system function, this leads to an indirect fail-safe behavior of the vehicle.
  • the electrical supply of the safety-relevant consumer or consumers by means of the now active auxiliary electrical system is possible until the vehicle is stationary.
  • the safety-relevant consumers are brakes, in particular two-circuit, electrically actuated brakes.
  • FIG. 1 shows as the first exemplary embodiment an inventive architecture of a vehicle electrical system for safety-relevant consumers.
  • the vehicle electrical system architecture in this case consists of two different, mutually coupled subnetworks, which are referred to as block 4 and block 14.
  • Block 4 symbolizes today's usual vehicle electrical system in motor vehicles, which is referred to below as the base vehicle network. It comprises at least one generator 1, one - A -
  • Energy storage in particular a battery 2 and, for example, a non-safety-relevant consumer 3.
  • the consumer representing a variety of electrical consumers, for example, may be the starter.
  • Block 14 shows the auxiliary electrical system with the components that are necessary to achieve a safe and reliable electrical energy supply for safety-relevant consumers.
  • the safety-relevant consumers are represented by block 15 using the example of a two-channel system with the blocks 16 and 17.
  • These blocks 16 and 17 may be, for example, an x-by-wire system, in particular a dual-circuit electrical braking system. In principle, however, other consumers are possible, which make high demands on the safety and reliability of the electrical energy supply.
  • the connection between the safety-relevant consumer 15 and the two safety-relevant consumers 16 and 17 and the base vehicle network 4 is obtained via corresponding lines and the switches 5 and 6.
  • the switches 10 and 13 connect the load 15 or the consumers 16 and 17 with the additional batteries 9 and 12.
  • the additional batteries 9 and 12, which can be selectable energy storage are in the embodiment of Figure 1 via a common DC-DC converter (DC / DC Transducer) 7 connected to the base board network 4, wherein the connection takes place in the vicinity of the generator 1.
  • the voltage converter 7 comprises in the embodiment of Figure 1, two outputs and, depending on the selected converter principle, in addition, the switches 8 and 11. However, these switches 8 and 11 need not necessarily be included in the Wandlerfunkton Rund.
  • the connection of the switches 5 and 6 to the base board network 4 is made to a connecting line between the generator 1 and the battery 2, wherein the exact connection points are selectable. Instead of the voltage converter 7, two separate DC-DC converter with appropriate shading can be provided.
  • the switch or switches of the DC-DC converter 7 can also be actuated in a suitable manner by a control device integrated therewith.
  • the arrangement shown in Figure 1 is to be understood only as an exemplary way of component sharing.
  • the switches 5, 6, 10 and 13 can also be integrated into the consumer 15.
  • the switches 8 and 11 functionally contained in the DC-DC converter shown by block 7 could also be implemented separately from the DC-DC converter.
  • the DC-DC converter 7 with the two outputs can alternatively be constructed by two separate voltage transformers. In this case, alternatively, different converter principles can be realized and thereby a diverse redundancy of the voltage converter can be represented. This makes it possible to increase the reliability of the illustrated vehicle electrical system architecture even further.
  • the individual switches 5, 6, 8, 10, 11, 13 can be realized in different or the same way, for example by electronic circuit breakers such as transistors or by relays.
  • additional devices for current and / or voltage measurement can be used in the switches. These devices can then be used to monitor and diagnose the auxiliary electrical system.
  • a first exemplary operating mode for supplying the safety-relevant consumer 15 is to keep the switches 5 and 6 closed during the fault-free operation of the base on-board network 4 and to open the switches 10 and 13. The safety-relevant consumer 15 is then supplied via the base vehicle network 4 during normal operation.
  • the DC-DC converter (DC / DC converter) 7 is controlled so that it only charges the two additional batteries 9 and 12 when the state of charge of the auxiliary batteries requires it. To detect the state of charge, these batteries can be assigned their own state of charge detection. Since the charge of the batteries 9 and 12 is required only relatively rarely, their cyclization and thus the stress on the batteries for this reason is very low. This results in a long life and reliability of the additional batteries.
  • the additional batteries 9 and 12 are decoupled from the base-board network 4 by the DC-DC converter.
  • the charge of Additional batteries 9 and 12 can therefore be carried out independently of the load-dependent voltage level of the base vehicle network 4. In this way, an optimal charge of the additional batteries is ensured.
  • the auxiliary electrical system can be completely separated by opening the switches 8 and 11 from the base board network 4. This prevents an error propagation, for example the propagation of unacceptable overvoltages from the base on-board network 4 to the auxiliary on-board network 14.
  • the auxiliary electrical system 14 can be tested and checked. For example, by activating the individual components of the auxiliary electrical system and measuring the current and voltage in the active current paths, a diagnosis of the blocks 5 to 13, ie in particular the switch, is possible. If the switches 8 and 11 are not already functionally contained in the DC-DC converter 7 because of the converter principle, additional switches can be provided between the DC-DC converter and the additional batteries. This can be a separation in case of error. By the different switches 8, 11; 5, 6 and 10, 13 errors can generally be encapsulated and so error propagation reliably prevented and possible errors do not affect the function of the consumer 15.
  • the switches 5 and 6 are opened and the switches 10 and 13 are closed.
  • the control of the switch can be done for example by means of a control device, such as a vehicle electrical system control unit, which outputs drive signals to the switch.
  • the supply of the safety-relevant consumer 15 takes place in case of failure of the base-board network with the help of additional batteries 9 and 12.
  • the help of integrated in the voltage converter 7 switch the connection to the base board network can be interrupted.
  • the function of the safety-relevant consumer 15 can be ensured and a complete decoupling of the safety-relevant consumer 15 from the base vehicle network 4 can be achieved even in the case of a faulty base vehicle network.
  • Another possible mode of operation is that initially only one of the two additional batteries of the auxiliary electrical system is coupled to the consumer 15 in the event of a faulty base-board network 4. Which of the two batteries is selected can be selected on the basis of specifiable conditions. If the two batteries have own state of charge detections, for example, the battery with the better state of charge can be switched on first. Only when the first switched-on current path or the relevant battery can no longer provide enough electrical power to the consumer 15, for example, a fault or because the battery is too discharged, the second channel of the auxiliary electrical system is coupled to the consumer 15.
  • Another possible mode of operation is that at times low voltage of the base vehicle network 4 of the consumer 15 can be supplied by means of the additional batteries 9 and 12. As a result, an increased stability of the supply voltage of the load 15 can be achieved.
  • the possibly too low output voltage of the battery 2 can be raised so far that a charge of the batteries 9 or 12 is still possible.
  • the output voltage supplied by the DC-DC converter 7 is set to a value which lies above the charging voltage of the batteries 9 and 12, respectively.
  • FIG. 2 shows a further exemplary embodiment of a vehicle electrical system architecture according to the invention.
  • This second embodiment corresponds in essential parts of the first embodiment and differs from this particular in that only a single additional battery 9 is present, the over the switches 10 and 13 can be connected to the consumer 15.
  • the DC voltage switch 7 comprises in this case only a single switch 8, wherein it is again possible to carry out the switch 8 separately from the voltage converter 7.
  • the electrical system architecture shown in Figure 2 is a cheaper option, since only an additional battery 9 and a switch 8 are required.
  • Both exemplary embodiments are suitable for reliably supplying safety-relevant electrical consumers in a vehicle electrical system with voltage. They are particularly suitable for supplying so-called x-by-wire consumers.
  • x-by-wire consumers which themselves are designed to be redundant, for example, dual-circuit electric brake systems or generally two-channel systems can be supplied so that at least part of the safety-critical load 15 remains energized even in the event of a fault.
  • the batteries 9, 12 in the auxiliary electrical system (block 14) various types of electrical energy storage can be used in principle.
  • the batteries 9, 12 may be of the same type, but alternatively batteries of different types may be used.
  • the storage of electrical energy in the auxiliary electrical system (block 14) results in a diverse redundancy.
  • Possible embodiments optionally include combinations of the embodiments illustrated in the two figures.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

L'invention concerne un réseau de bord pour des consommateurs liés à la sécurité, lequel réseau comprend au moins deux réseaux de bord partiels, un premier réseau de bord partiel classique et un deuxième réseau de bord auxiliaire avec les composants servant à obtenir une alimentation en énergie électrique sûre et fiable pour les consommateurs liés à la sécurité. Le réseau de bord auxiliaire comprend au moins quatre chemins de connexion, par lesquels le consommateur lié à la sécurité peut être connecté à au moins deux batteries. Parmi des consommateurs liés à la sécurité figurent en particulier des consommateurs à commande électrique (x-by-wire), par exemple des systèmes de freinage électrique à double circuit.
PCT/EP2006/050198 2005-01-31 2006-01-13 Reseau de bord pour des consommateurs lies a la securite WO2006082125A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005004330A DE102005004330A1 (de) 2005-01-31 2005-01-31 Bordnetz für sicherheitsrelevante Verbraucher
DE102005004330.5 2005-01-31

Publications (1)

Publication Number Publication Date
WO2006082125A1 true WO2006082125A1 (fr) 2006-08-10

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DE (1) DE102005004330A1 (fr)
WO (1) WO2006082125A1 (fr)

Cited By (5)

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WO2017118500A1 (fr) * 2016-01-07 2017-07-13 Robert Bosch Gmbh Réseau de bord
EP3192705A1 (fr) * 2016-01-13 2017-07-19 Toyota Jidosha Kabushiki Kaisha Système d'alimentation électrique
CN107110896A (zh) * 2015-01-08 2017-08-29 罗伯特·博世有限公司 用于对车载电网进行监控的方法
EP3530513A1 (fr) * 2018-02-22 2019-08-28 Toyota Jidosha Kabushiki Kaisha Système d'alimentation d'un vehicule électrique
WO2021197777A1 (fr) * 2020-03-30 2021-10-07 Zf Friedrichshafen Ag Dispositif de commande pour commander une fonction de véhicule pour un véhicule, et procédé d'actionnement d'un dispositif de commande

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DE102013225020A1 (de) * 2013-12-05 2015-06-11 Robert Bosch Gmbh Bordnetz zur fehlertoleranten und redundanten Versorgung
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DE102015221729A1 (de) * 2015-11-05 2017-05-11 Robert Bosch Gmbh Verfahren zum Überwachen eines elektrischen Bordnetzes
DE102016200099A1 (de) * 2016-01-07 2017-07-13 Robert Bosch Gmbh Bordnetz
JP6690396B2 (ja) 2016-05-13 2020-04-28 株式会社オートネットワーク技術研究所 リレー装置
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JP6702214B2 (ja) 2017-01-31 2020-05-27 トヨタ自動車株式会社 電源装置及び車両
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JP6527906B2 (ja) 2017-05-18 2019-06-05 矢崎総業株式会社 電力分配システム
JP7003706B2 (ja) 2018-02-06 2022-01-21 トヨタ自動車株式会社 電源システム
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DE102018213897A1 (de) * 2018-08-17 2020-02-20 Robert Bosch Gmbh Fehlertolerantes Bordnetzmodul mit zwei parallel geschalteten DC/DC-Wandlern
DE102018121960A1 (de) 2018-09-10 2020-03-12 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Vorrichtung zur Entkopplung und zum Schutz vor Ausgleichsströmen in einem redundanten System für autonomes Fahren
DE102019112706A1 (de) * 2019-05-15 2020-11-19 Bayerische Motoren Werke Aktiengesellschaft Verfahren und Vorrichtung zur Energieversorgung eines elektrischen Verbrauchers eines Fahrzeugs
DE102019209026A1 (de) * 2019-06-21 2020-12-24 HELLA GmbH & Co. KGaA Bordnetz und Leistungsmodul für ein solches
JP7013500B2 (ja) * 2020-01-30 2022-01-31 矢崎総業株式会社 車両電源システム
EP3912843A1 (fr) 2020-05-20 2021-11-24 Ningbo Geely Automobile Research & Development Co., Ltd. Système d'alimentation électrique de véhicule
DE102020208401A1 (de) * 2020-07-03 2022-01-05 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zur Absicherung insbesondere sicherheitsrelevanter Verbraucher in einem Kraftfahrzeug
DE102021200578A1 (de) 2021-01-22 2022-07-28 Volkswagen Aktiengesellschaft Kraftfahrzeugbordnetz
EP4119400A1 (fr) * 2021-07-12 2023-01-18 KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH Système de gestion d'alimentation électrique pour véhicule
DE102021118869A1 (de) 2021-07-21 2023-01-26 Audi Aktiengesellschaft Bordnetz und Verfahren zu seinem Betrieb
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CN107110896A (zh) * 2015-01-08 2017-08-29 罗伯特·博世有限公司 用于对车载电网进行监控的方法
CN107110896B (zh) * 2015-01-08 2020-12-01 罗伯特·博世有限公司 用于对车载电网进行监控的方法
WO2017118500A1 (fr) * 2016-01-07 2017-07-13 Robert Bosch Gmbh Réseau de bord
EP3192705A1 (fr) * 2016-01-13 2017-07-19 Toyota Jidosha Kabushiki Kaisha Système d'alimentation électrique
CN106972614A (zh) * 2016-01-13 2017-07-21 丰田自动车株式会社 电源系统
US10279758B2 (en) 2016-01-13 2019-05-07 Toyota Jidosha Kabushiki Kaisha Power supply system
CN106972614B (zh) * 2016-01-13 2019-08-06 丰田自动车株式会社 电源系统
EP3530513A1 (fr) * 2018-02-22 2019-08-28 Toyota Jidosha Kabushiki Kaisha Système d'alimentation d'un vehicule électrique
CN110182097A (zh) * 2018-02-22 2019-08-30 丰田自动车株式会社 车辆电源系统
US10919468B2 (en) 2018-02-22 2021-02-16 Toyota Jidosha Kabushiki Kaisha Vehicular electric power supply system
CN110182097B (zh) * 2018-02-22 2022-08-30 丰田自动车株式会社 车辆电源系统
WO2021197777A1 (fr) * 2020-03-30 2021-10-07 Zf Friedrichshafen Ag Dispositif de commande pour commander une fonction de véhicule pour un véhicule, et procédé d'actionnement d'un dispositif de commande

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