WO2021224082A1 - Ensemble circuit pour relier des réseaux avec différentes tensions nominales par l'intermédiaire de convertisseurs cc-cc - Google Patents

Ensemble circuit pour relier des réseaux avec différentes tensions nominales par l'intermédiaire de convertisseurs cc-cc Download PDF

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Publication number
WO2021224082A1
WO2021224082A1 PCT/EP2021/061083 EP2021061083W WO2021224082A1 WO 2021224082 A1 WO2021224082 A1 WO 2021224082A1 EP 2021061083 W EP2021061083 W EP 2021061083W WO 2021224082 A1 WO2021224082 A1 WO 2021224082A1
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WO
WIPO (PCT)
Prior art keywords
connection
input
output
sub
node
Prior art date
Application number
PCT/EP2021/061083
Other languages
German (de)
English (en)
Inventor
André Körner
Original Assignee
HELLA GmbH & Co. KGaA
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 HELLA GmbH & Co. KGaA filed Critical HELLA GmbH & Co. KGaA
Publication of WO2021224082A1 publication Critical patent/WO2021224082A1/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
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/08—Three-wire systems; Systems having more than three wires
    • H02J1/082—Plural DC voltage, e.g. DC supply voltage with at least two different DC voltage levels
    • 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
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/10—Parallel operation of dc sources
    • H02J1/102—Parallel operation of dc sources being switching converters

Definitions

  • Circuit arrangement for linking networks with different nominal voltages via DC voltage converters
  • the invention relates to a further development of the invention disclosed in the German patent application with the official file number 102019209026.5.
  • the application with the file number 102019209026.5 discloses a circuit arrangement for linking networks with different nominal voltages via DC voltage converters
  • connection With a connection called the first connection between the first input and output of the first DC voltage converter and the first connection for the first sub-network with the first nominal voltage, which is routed via a first node,
  • connection With a connection called the second connection between the second input and output of the first DC voltage converter and the connection for the first sub-network with the second nominal voltage, which is routed via a second node,
  • connection - with a connection called the third connection between the first input and output and a third node
  • connection - with a connection called the fourth connection between the second input and output and the connection for the second sub-network with the second nominal voltage, which is routed via a fourth node
  • the application 102019209026.5 describes such a circuit arrangement which also has a connection for a second subnetwork with the first nominal voltage and in which the third connection is routed to the third connection via the third node.
  • the laid-open specification DE 102019209026 A1 is hereby incorporated into the disclosure content of the present application by means of references.
  • the subnetworks can be separated from one another via the coupling switch and the DC voltage converter.
  • the coupling switch connected to the failed or faulty sub-network or the DC voltage converter connected to the failed or faulty sub-network can be switched off.
  • the circuit arrangement disclosed in the application with the file number 102019209026.5 is single-pole.
  • a circuit arrangement of the type mentioned above can be used in motor vehicles to couple electrical systems with different nominal voltages. It is common, for example, to couple electrical systems with 12 volts and 48 volts nominal voltage in vehicles.
  • These on-board networks have a common ground potential in the known concepts, which simplifies the design of the on-board networks and, in particular, the circuit arrangement.
  • the present invention is based on the object to improve the reliability ver.
  • connection With a connection called the fifth connection between the first input and output of the first DC voltage converter and the second connection for the first sub-network with the first nominal voltage, which is routed via a fifth node,
  • a first connection and a second connection for a second sub-network with the first nominal voltage can be provided.
  • the third connection can be routed via the third node to the first connection for the second sub-network with the first nominal voltage and the
  • the sixth connection can be routed via the sixth node to the second connection for the second sub-network with the first nominal voltage.
  • the first connection can be via at least one first isolating switch
  • the second connection can be via at least one second isolating switch
  • the third connection can be via at least one third isolating switch
  • the fourth connection can be via at least one fourth isolating switch
  • the fifth connection can be via at least one fifth isolating switch and / or the sixth connection can be routed via at least one sixth disconnector.
  • the circuit breakers can be arranged at different points in the first, second, third and / or fourth connec tion.
  • One of the first isolating switches or the first isolating switch can be arranged between the connection of the circuit arrangement for the first sub-network with the first nominal voltage and the first node.
  • One of the fifth circuit breakers or the fifth circuit breaker can be net angeord between the connection of the circuit arrangement for the first sub-network with the first nominal voltage and the fifth node. Together with the first disconnector, it is then possible to separate the first part of the network with the first nominal voltage in two poles from the circuit arrangement according to the invention. If a defective first sub-network with the first nominal voltage is separated from the remaining circuit arrangement according to the invention, it cannot have any effect on the arrangement according to the invention in such a way that its DC voltage converter would have to be switched off and its coupling switch opened.
  • One of the first isolating switch or the first isolating switch can also be arranged between the first node and the first input and output of the first DC voltage converter.
  • One of the fifth isolating switch or the fifth isolating switch can also switch between the fourth node and the first input and output of the be arranged second DC voltage converter. Then it is possible to separate the first input and output of the first DC voltage converter in two poles from the rest of the circuit arrangement according to the invention. If a defective first input and output is separated from the rest of the circuit arrangement according to the invention, it cannot have any effect on the arrangement according to the invention in such a way that the first coupling switch connected to this first input and output of the first DC voltage switch would have to be opened.
  • One of the second isolating switch or the second isolating switch can be arranged between the connection of the circuit arrangement for the first sub-network with the second nominal voltage and the second node. It is then possible to separate the first sub-network with the second nominal voltage from the circuit arrangement according to the invention. If a defective first sub-network with the second nominal voltage is separated from the rest of the circuit arrangement according to the invention, there can be no effect on the arrangement according to the invention in such a way that its DC voltage converter would have to be switched off and its coupling switch opened.
  • One of the second circuit breakers or the second circuit breaker can also be arranged between the second node and the second input and output of the first DC voltage converter. It is then possible to separate the second input and output of the first DC / DC converter from the rest of the circuit arrangement according to the invention. If a defective second input and output is separated from the rest of the circuit arrangement according to the invention, it cannot have any effect on the arrangement according to the invention in such a way that the second coupling switch connected to this second input and output of the first DC voltage switch would have to be opened.
  • One of the third circuit breakers or the third circuit breaker can be arranged between the connection of the circuit arrangement for the second sub-network with the first nominal voltage and the third node.
  • One of the sixth circuit breakers or the sixth disconnector can be arranged between the connection of the circuit arrangement for the second sub-network with the first nominal voltage and the sixth node.
  • One of the third circuit breakers or the third circuit breaker can also be arranged between the third node and the first input and output of the second DC voltage converter.
  • One of the sixth circuit breakers or the sixth circuit breaker can also be arranged between the sixth node and the first input and output of the second DC / DC converter. It is then possible to separate the first input and output of the second DC voltage converter from the rest of the circuit arrangement according to the invention. If a defective first input and output is separated from the rest of the circuit arrangement according to the invention, it cannot have any effect on the arrangement according to the invention in such a way that the first coupling switch connected to this first input and output of the second DC voltage switch would have to be opened.
  • One of the fourth circuit breakers or the fourth circuit breaker can be arranged between the connection of the circuit arrangement for the second sub-network with the second nominal voltage and the fourth node. It is then possible to separate the second sub-network with the second nominal voltage from the circuit arrangement according to the invention. If a defective second sub-network with the second nominal voltage is disconnected from the rest of the circuit arrangement according to the invention, it cannot have any effect on the arrangement according to the invention in such a way that its DC voltage converter would have to be switched off and its coupling switch opened.
  • One of the fourth circuit breakers or the fourth circuit breaker can also be arranged between the fourth node and the second input and output of the second DC voltage converter.
  • the disconnector and the coupling switch of a circuit arrangement according to the invention can be controllable switches and the circuit arrangement can have a controller that is connected to control terminals of the controllable switches.
  • the first DC voltage converter can be a multiphase converter.
  • the second DC voltage converter can also be a multiphase converter.
  • several groups each consisting of at least one switch with associated inductances, are arranged in parallel within the DC / DC converter, the individual elements being controlled in a fixed sequence, but regulated in a correspondingly more complex manner.
  • the group formation serves to increase performance and the seamless flow of electricity. This changes the properties of the converter:
  • Fig. 1 shows a circuit arrangement as it is known from the application with the Aktenzei chen 10 2019 209 026.5 and
  • Fig. 2 shows a circuit arrangement according to the invention with a two-pole connection of inputs and outputs of DC-DC converters to part networks.
  • circuit arrangement known from the application with the file number 10 2019 209 026.5 is intended for linking networks with different nominal voltages via DC voltage converters.
  • Such circuit arrangements can, as well as the circuit arrangements according to the invention, be part of a motor vehicle electrical system that includes various sub-networks that have different nominal voltages, for example sub-networks with 12 V nominal voltage and sub-networks with 48 V nominal voltage.
  • the circuit arrangements can also have higher voltages, as are customary, for example, in vehicles with electric drives.
  • the circuit arrangement shown in FIG. 1 and the circuit arrangement according to the invention from FIG. 2 have many similarities, in particular a similar topology and the same structural elements and components.
  • the same compo elements and components are denoted by the same reference numerals in the figures.
  • the topology of the circuit arrangement according to FIG. 1 and the function of the circuit arrangement according to FIG. 1 are explained.
  • the differences between the topology of the circuit arrangement according to FIG. 2 and that of the circuit arrangement according to FIG. 1 are explained, which are in the two-pole connection of two sub-networks.
  • the two circuit arrangements do not differ in terms of their function.
  • the circuit arrangement S shown in FIG. 1 has a connection A1 for a first sub-network BN48-1 with a first nominal voltage and a connection A3 for a first sub-network BN12-1 with a second nominal voltage.
  • the circuit arrangement has a first DC / DC converter DC / DC_a, which has a first input and Has output 1.1 and a second input and output 1.2.
  • a first connection between the first input and output 1.1 of the first DC / DC converter DC / DC_a and the connection A1 for the first subnetwork BN48-1 with the first nominal voltage make an electrical current possible from the first input and output 1.1 to connection A1 and vice versa .
  • This first connection is routed via a first node K1.
  • a second connection is established between the second input and output 1.2 of the first DC / DC_a and the connection A2 for the first sub-network BN12-1 with the second nominal voltage, via which a current between the first DC / DC_a and the connection A2 and vice versa is possible.
  • This second connection is routed via a second node K2.
  • the circuit arrangement S shown in FIG. 1 also has a connection A3 for a second sub-network BN48-2 with the first nominal voltage, a connection A4 for a second sub-network BN12-2 with the second nominal voltage and a second DC-DC converter DC / DC_b, which has a first input and output 2.1 and a second input and output 2.2.
  • a third connection connects the first input and output 2.1 of the second direct voltage converter DC / DC_b and the connection A3 for the second sub-network BN48-2 with the first nominal voltage via a third node K3 and a fourth connection connects the second input and output 2.2 of the second DC voltage converter DC / DC_b and the connection A4 for the second sub-network BN12-2 with the second nominal voltage via a fourth node K4.
  • Electrical energy can be transmitted from the sub-networks BN48-1, BN12-1 to the first DC / DC converter DC / DC_a and in the opposite directions via the first connection and the second connection. Via the third connection and the fourth connection, electrical energy can be transmitted from the sub-networks BN48-2, BN12-2 to the second DC / DC converter DC / DC_b and in the opposite directions.
  • a transfer of energy from the sub-network BN48-1 to one of the subnetworks BN48-2, BN12-2 and vice versa is not possible with the topology described so far. The same applies to energy transmission from the subnetwork BN12_2 to one of the subnetworks BN48-1, BN12-1 and vice versa.
  • no energy can be transmitted from the first direct voltage converter DC / DC_a to the second sub-networks BN48-2, BN12-2 and vice versa or from the second direct voltage converter DC / DC_b to the first sub-networks BN48-1, BN12-1 and vice versa.
  • a first and a second coupling switch S1, S2 are provided.
  • the first coupling switch S1 is connected on the one hand to the first node K1 and on the other hand to the third node K3
  • the second coupling switch S2 is connected on the one hand to the second node K2 and on the other hand to the fourth node K4.
  • the first sub-network BN48-1 with the first nominal voltage comprises an electrical machine M / G, which can work as a motor and as a generator in order to receive or provide electrical energy or power.
  • a battery with the first nominal voltage is provided in the first sub-network BN48-1, which can receive or provide electrical energy or power.
  • safety-relevant consumers ASIL are seen in the first sub-network BN48-1 with the first nominal voltage.
  • the second sub-network BN48-2 with the first nominal voltage includes not only non-safety-relevant consumers QM but also the safety-relevant consumers ASIL, which are already part of the first sub-network BN48-1 with the first nominal voltage.
  • the safety-relevant consumers ASIL can thus be supplied with electrical energy in two ways, namely from the first sub-network and from the second sub-network with the first nominal voltage.
  • the first sub-network BN12-1 with the second nominal voltage comprises a battery that can receive or provide electrical energy or power. Furthermore, safety-relevant consumers ASIL are provided in the first subnetwork BN12-1 with the second nominal voltage.
  • the second sub-network BN12-2 with the second nominal voltage includes not only non-safety-relevant consumers QM but also the safety-relevant consumers ASIL, which are already part of the first sub-network BN12-1 with the second nominal voltage.
  • These safety-relevant consumers ASIL can also be supplied with electrical energy in two ways, namely from the first sub-network and from the second sub-network with the second nominal voltage.
  • the circuit arrangement shown in FIG. 2 differs from the circuit arrangement shown in FIG. 1 in that the sub-networks BNHV-1, BNHV-2 are sub-networks with a high voltage as the first nominal voltage and can be supplied with electrical energy via electrical drives of an electric vehicle nen. These high-voltage sub-networks are connected in two poles to the circuit arrangement S according to the invention.
  • the circuit arrangement S has a first connection A1 p and a second connection A1 n for connection to the first subsystem with the first nominal voltage and a first connection A3p and a second connection A3n for connection to the second subsystem with the first nominal voltage .
  • the first connection A1 p is connected via the first connection via the first node and the second connection A1 n is connected via a fifth connection to a fifth node with the first, two-pole input and output 1.1 p, 1 .1 n of the first DC / DC converter DC / DC_a .
  • the first connection A3p is via the third connection via the The third node and the second connection A3n are connected via a sixth connection via a sixth node to the first, two-pole input and output 2.1 p, 2.1 n of the second direct voltage converter DC / DC_b. This creates a two-pole connection between the subnetworks BNHV-1, BNHV-2 and the DC / DC converters DC / DC_a, DC / DC_b.
  • the first node K1 is connected to the third node K3 via the first coupling switch S1 p.
  • the fifth node K5 is connected to the sixth node K6 via a third coupling switch S1 n.
  • This means that the first input and output of the first DC / DC converter DC / DC_a and the first input and output of the second DC / DC_b are connected in two poles via the first coupling switch S1 p and the third coupling switch S1 n and can also be separated from one another in two poles .
  • the first sub-network BNHV-1 with the first nominal voltage comprises an electrical machine M / G, which can work as a motor and as a generator in order to receive or provide electrical energy or power.
  • a battery with the first nominal voltage is provided in the first sub-network BN48-1, which can receive or provide electrical energy or power.
  • safety-relevant consumers ASIL are seen in the first subnetwork BNHV-1 with the first nominal voltage.
  • the second sub-network BNHV-2 with the first nominal voltage includes not only non-safety-relevant consumers QM but also the safety-relevant consumers ASIL, which are already part of the first sub-network BNHV-1 with the first nominal voltage.
  • the safety-relevant consumers ASIL can thus be supplied with electrical energy in two ways, namely from the first sub-network and from the second sub-network with the first nominal voltage.
  • the consumers, the electrical machine and the battery of the first sub-network BNHV-1 and the second sub-network BNHV-2 with the first nominal voltage are two-pole connected to the sub-networks and thus to the circuit arrangement according to the invention.
  • a controller is connected to control terminals of the first coupling switch S1 p and the third coupling switch S1 n.
  • the control is set up in such a way that the coupling switches S1 p, S1 n are always operated simultaneously and always have the same switching status.
  • the circuit arrangement according to FIG. 2 can be used to transport electrical energy from one sub-network to another sub-network.
  • Decoupling can also take place by opening the coupling switch.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

L'invention concerne un ensemble circuit (S) pour relier des réseaux avec différentes tensions nominales par l'intermédiaire de convertisseurs CC-CC (DC/DC_a, DC/DC_b), comprenant : un connecteur (A1p) pour un premier sous-réseau (BNHV -1) ayant une première tension nominale ; un connecteur (A2) pour un premier sous-réseau (BN12-1) ayant une seconde tension nominale ; un premier convertisseur CC-CC (DC/DC _a) ayant de premières entrée et sortie (1.1) et de secondes entrée et sortie (1.2) ; une connexion, dite première connexion, entre les premières entrée et sortie (1.1) du premier convertisseur CC-CC (DC/DC_a) et le premier connecteur (A1p) pour le premier sous-réseau (BNHV-1) avec la première tension nominale, qui est guidée par l'intermédiaire d'un premier nœud (K1) ; une connexion, dite deuxième connexion, entre les secondes entrée et sortie (1.2) du premier convertisseur CC-CC (DC/DC_a) et le connecteur (A2) pour le premier sous-réseau (BN12-1) avec la seconde tension nominale, qui est guidée par l'intermédiaire d'un second nœud (K2) ; un connecteur (A4) pour un second sous-réseau (BN12-2) avec la seconde tension nominale ; et un second convertisseur CC/CC (DC/DC_b) ayant de premières entrée et sortie (2.1) et de secondes entrée et sortie (2.2), les premières entrée et sortie (1.1) du premier convertisseur CC-CC (DC/DC_a) et les premières entrée et sortie (2.1) du second convertisseur CC-CC (DC/DC_b) étant conçues pour être bipolaires.
PCT/EP2021/061083 2020-05-06 2021-04-28 Ensemble circuit pour relier des réseaux avec différentes tensions nominales par l'intermédiaire de convertisseurs cc-cc WO2021224082A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020112278.0A DE102020112278A1 (de) 2020-05-06 2020-05-06 Schaltungsanordnung zum Verknüpfen von Netzen mit unterschiedlichen Nennspannungen über Gleichspannungswandler
DE102020112278.0 2020-05-06

Publications (1)

Publication Number Publication Date
WO2021224082A1 true WO2021224082A1 (fr) 2021-11-11

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PCT/EP2021/061083 WO2021224082A1 (fr) 2020-05-06 2021-04-28 Ensemble circuit pour relier des réseaux avec différentes tensions nominales par l'intermédiaire de convertisseurs cc-cc

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DE (1) DE102020112278A1 (fr)
WO (1) WO2021224082A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110460034A (zh) * 2019-08-28 2019-11-15 国网江苏省电力有限公司 直流配用电系统及其测试方法
DE102019209026A1 (de) 2019-06-21 2020-12-24 HELLA GmbH & Co. KGaA Bordnetz und Leistungsmodul für ein solches

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101621502A (zh) 2008-06-30 2010-01-06 华为技术有限公司 存储、查找路由表的方法及装置
DE102010046616A1 (de) 2010-09-25 2012-03-29 Volkswagen Ag System und Verfahren zum Versorgen elektrisch betriebener Verbraucher und Kraftfahrzeuge
DE102014215615A1 (de) 2014-08-07 2016-02-11 Bayerische Motoren Werke Aktiengesellschaft Bordnetz zum Versorgen eines Startermotors für ein Fahrzeug mit einem hybriden Antrieb
DE102016122444A1 (de) 2016-11-22 2018-05-24 HELLA GmbH & Co. KGaA Zweispannungsbatterie
JP7066529B2 (ja) 2018-05-31 2022-05-13 矢崎総業株式会社 Ｄｃ／ｄｃ変換ユニット

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019209026A1 (de) 2019-06-21 2020-12-24 HELLA GmbH & Co. KGaA Bordnetz und Leistungsmodul für ein solches
CN110460034A (zh) * 2019-08-28 2019-11-15 国网江苏省电力有限公司 直流配用电系统及其测试方法

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