CN116345902A - Safety power switching device, voltage converter and electric vehicle - Google Patents

Safety power switching device, voltage converter and electric vehicle Download PDF

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Publication number
CN116345902A
CN116345902A CN202111585685.7A CN202111585685A CN116345902A CN 116345902 A CN116345902 A CN 116345902A CN 202111585685 A CN202111585685 A CN 202111585685A CN 116345902 A CN116345902 A CN 116345902A
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CN
China
Prior art keywords
safety power
safety
assemblies
voltage converter
power switch
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
Application number
CN202111585685.7A
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Chinese (zh)
Inventor
李剑平
伊曼纽尔·塔隆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes de Controle Moteur SAS
Original Assignee
Valeo Systemes de Controle Moteur SAS
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 Valeo Systemes de Controle Moteur SAS filed Critical Valeo Systemes de Controle Moteur SAS
Priority to CN202111585685.7A priority Critical patent/CN116345902A/en
Priority to PCT/EP2022/086472 priority patent/WO2023117800A1/en
Publication of CN116345902A publication Critical patent/CN116345902A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/1213—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for DC-DC converters
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
    • 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
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • 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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The application discloses a voltage converter for an electric vehicle, which comprises a power conversion device, wherein the power conversion device comprises at least two power conversion components connected in parallel; the voltage converter further comprises a safety power switching device connected to the power conversion device, comprising at least two safety power switching components for providing a protection mechanism for the power conversion device during a selection of its off or on. The application also discloses a safety power switch device and an electric vehicle.

Description

Safety power switching device, voltage converter and electric vehicle
Technical Field
Embodiments of the present application generally relate to a precharge device, a voltage converter, and an electric vehicle.
Background
With the development of drive control technology, the motor control system plays an increasingly important role in the fields of motor control, electric vehicle control, variable frequency control and the like. In the field of electric vehicles, including, for example, electric-only vehicles (BEV, battery Electric Vehicle), hybrid electric vehicles (HEV, hybrid Electric Vehicle), plug-in hybrid electric vehicles (PHEV, plug-in Hybrid Electric Vehicle), extended range electric vehicles (Range extended EV), fuel cell vehicles (FCEV, fuel Cell Electric Vehicle), etc., the prior art applies a direct current/direct current (Direct Current to Direct Current, "DC/DC") converter to a dual-power network automobile architecture in order to perform voltage conversion between a first network and a second network of the vehicle. Typically, the first network is a low voltage network providing less than 30 volts (V), e.g. 24V, 14V, 12V, and the second network is a high voltage network providing more than 30V, e.g. 48V, 60V. Performing voltage conversion specifically includes connecting the high side of the DC/DC converter to iBSG ("integrated Belt Starter Generator" i.e., integrated belt-driven generator) in the vehicle and to, for example, 48V, 60V batteries through a relay. The capacitor on the high side needs to be charged to, for example, 48V, 60V battery voltage by means of the pre-charging mechanism of the DC/DC converter, then the electric vehicle will close the relay to connect, for example, 48V, 60V battery to the high side, then the battery supplies power to iBSG, iBSG operates in starter mode, iBSG operates in generator mode under the drive of the internal combustion engine, and the electric vehicle commands the DC/DC converter to operate in buck mode to achieve power exchange.
There is a need to provide an improvement of a safety power switching device for a voltage converter of an electric vehicle with at least high efficiency, high safety and a simple structure.
Disclosure of Invention
According to one or more embodiments of the present disclosure, in one exemplary aspect, a voltage converter is provided that includes a power conversion device including at least two power conversion components connected in parallel; the voltage converter further comprises a safety power switching device connected to the power conversion device, comprising at least two safety power switching components for providing a protection mechanism for the power conversion device during a selection of its off or on.
In some embodiments, each of the at least two safety power switching components corresponds to each of the at least two power conversion components one to one and a series connection is formed between each of the one to one safety power switching components and the power conversion components, such that each of the safety power switching components provides a protection mechanism for each of the power conversion components, respectively.
In some embodiments, each of the safety power switch assemblies includes at least two electrical switches in series for providing a protection mechanism for the power conversion device in the boost mode and the buck mode, respectively.
In some embodiments, the two series connected electrical switches of each of the safety power switch assemblies are two reverse connected electrical switches to operate in a boost mode and a buck mode, respectively.
In some embodiments, the voltage converter is a dc/dc converter.
In another exemplary aspect, the present invention provides a safety power switching device connected to a power conversion device of a voltage converter, the safety power switching device comprising at least two safety power switching components connected in parallel for providing a protection mechanism for the power conversion device comprising at least two power conversion components during a selection of whether it is off or on.
In another exemplary aspect, the invention provides an electric vehicle comprising the aforementioned voltage converter or the aforementioned safety power switching device.
These and other features, aspects, and advantages of the present application will become better understood with reference to the following description. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
Drawings
A full and enabling disclosure of the present application, including the best mode thereof, directed to one of ordinary skill in the art, is set forth in the specification, which makes reference to the appended figures, in which:
fig. 1 is a schematic circuit diagram of a voltage converter according to an exemplary embodiment of the present application; and
fig. 2 is a schematic circuit diagram of a voltage converter according to another exemplary embodiment of the present application.
Detailed Description
Specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following detailed description of these embodiments, certain well-known functions or constructions are not described in detail herein to avoid obscuring the disclosure of the invention in unnecessary detail. Each example is provided by way of explanation, not limitation, of the present application. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the scope or spirit of the application. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Accordingly, it is intended that the present application cover such modifications and variations as come within the scope of the appended claims and their equivalents.
As used in this specification, the terms "first," "second," and the like may be used interchangeably to distinguish one element from another element and are not intended to represent the location or importance of each element. As used in this specification, the terms "a," "an," "the," and "said" are intended to mean that there are one or more elements unless the context clearly indicates otherwise. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements other than the listed elements. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
Furthermore, as used in this specification, the term "real-time" refers to at least one of the time at which the associated event occurs, the time at which the predetermined data is measured and collected, the time at which the data is processed, and the time at which the system corresponds to the event and environment. In the embodiments described in this specification, these times occur substantially instantaneously.
Referring now to the drawings, in which like numerals represent like elements throughout, fig. 1 and 2 illustrate schematic circuit diagrams of a DC/DC converter of an exemplary embodiment of the present application, respectively.
In the embodiment shown in fig. 1, the DC/DC converter 100 may be implemented in an electric vehicle equipped with a dual voltage supply network. The first vehicle network may comprise a low voltage source 4 of e.g. 12V and the second vehicle network may comprise a high voltage source 3 of e.g. 48V, the low voltage source 4, the high voltage source 3 being referenced to the same electrical ground, the DC/DC converter 100 being connected between the low voltage source 4, the high voltage source 3. In the illustrated embodiment, the DC/DC converter 100 may operate in a first precharge phase and a second precharge phase to achieve a precharge of a predetermined voltage value. Wherein, when the DC/DC converter 100 is operating in the first pre-charge phase, the high side voltage value will be charged from 0 volts to a first predetermined voltage value, such as a 12 volt battery voltage; when the DC/DC converter 100 is operating in the second pre-charge phase, the high side voltage value will be charged from the first predetermined voltage value to a second predetermined voltage value, for example from 12 volts to 48 volts battery voltage.
With continued reference to fig. 1, in the present embodiment, the DC/DC converter 100 includes a power conversion device 120, and the power conversion device 120 may include a plurality of power conversion devices 2 connected in parallel, and in the illustrated embodiment, the power conversion device 120 includes 3 power conversion devices 2 connected in parallel. The DC/DC converter 100 further comprises a safety power switching device 110, which safety power switching device 110 comprises a plurality of safety power switching components 1 for providing a protection mechanism for the DC/DC converter 100 during a selection of its turn-off or turn-on. In the embodiment shown, the safety power switching device 110 comprises 3 safety power switching assemblies 1. Each of the safety power switch assemblies 1 corresponds to each of the power conversion assemblies 2 one by one, and a series connection is formed between each of the safety power switch assemblies 1 and the power conversion assemblies 2 one by one. Each of the safety power switch assemblies 1 comprises two power switches 11, 12 connected in series in opposite directions to operate in a boost mode and a buck mode, respectively, for providing protection mechanisms for the power conversion means 120 in the boost mode and the buck mode, respectively.
In some embodiments, the power switches 11, 12 include, but are not limited to, MOSFETs, insulated gate bipolar transistors (Insulated Gate Bipolar Transistor, IGBTs), integrated gate commutated thyristors (Integrated Gate Commutated Thyristor, IGCTs), electron injection enhanced gate transistors (Injection Enhanced Gate Transistors, IEGT), silicon carbide metal oxide semiconductor field effect transistors (SiC MOSFETs), or other controllable electrical switches that can be switched between on and off states. As in the illustrated embodiment, the power switches 11, 12 may be two MOSFET transistors of common source.
As shown in fig. 1, the power conversion device 120 and the safety power switch device 110 of the voltage converter, each power conversion component 2 and the corresponding safety power switch component 1 are connected in series with independent power stages, when one of the power stages is short-circuited, the power switches 11, 12 of the corresponding safety power switch component 1 will be controlled to close the single power transmission path, while the other two independent power stages can still work normally and output two thirds of power. Even in extreme cases, the DC/DC converter 100 can maintain one third of the output power, relying on normal operation of only one power stage.
In some embodiments, the signals controlling the turning off and on of the power switches 11, 12 may come from a controller, which may be any type of programmable device, such as a microcontroller, a Micro Control Unit (MCU), a Digital Signal Processor (DSP), etc.
Referring to fig. 2, a schematic circuit diagram of a voltage converter including more than three independent power stages connected in series is shown. In this embodiment, the power conversion device 120 of the voltage converter 200 includes more than three power conversion assemblies 2 connected in parallel, each power conversion assembly 2 is connected in series with the safety power switch assembly 1 of a corresponding safety power switch device 110, and in an extreme case, it is ensured that the DC/DC converter 200 can have output power as long as one power stage can be in a normal operation state.
This written description uses examples to disclose the application, including the best mode, and also to enable any person skilled in the art to practice the application, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the application is defined by the claims, and may include other embodiments that occur to those skilled in the art. Such other embodiments are intended to be within the scope of the claims if they include structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.

Claims (10)

1. A voltage converter for an electric vehicle, comprising:
the power conversion device comprises at least two power conversion components which are connected in parallel; and
the safety power switch device is connected with the power supply conversion device and comprises at least two safety power switch components, and the safety power switch components are used for providing a protection mechanism for the power supply conversion device in the process of selecting whether the safety power switch components are turned off or turned on.
2. The voltage converter of claim 1, wherein:
each of the at least two safety power switch assemblies is in one-to-one correspondence with each of the at least two power conversion assemblies and is connected in series between the safety power switch assemblies and the power conversion assemblies in one-to-one correspondence, so that each of the safety power switch assemblies provides a protection mechanism for each of the power conversion assemblies.
3. The voltage converter of claim 1, wherein:
each safety power switch assembly comprises at least two electric switches connected in series and is used for providing a protection mechanism for the power conversion device in a step-up mode and a step-down mode respectively.
4. A voltage converter according to claim 3, characterized in that:
the two series-connected electrical switches of each of the safety power switch assemblies are two oppositely-connected electrical switches to operate in a boost mode and a buck mode, respectively.
5. The voltage converter of claim 1, wherein:
the voltage converter is a DC/DC converter.
6. A safety power switching device for a voltage converter of an electric vehicle, characterized by:
the safety power switch device is connected with a power supply conversion device of the voltage converter,
the safety power switching device includes:
at least two parallel safety power switch assemblies for providing a protection mechanism for the power conversion device including at least two power conversion assemblies during a selection of whether they are off or on.
7. The safety power switching device of claim 6, wherein:
each of the at least two safety power switch assemblies is in one-to-one correspondence with each of the at least two power conversion assemblies and is connected in series between the safety power switch assemblies and the power conversion assemblies in one-to-one correspondence, so that each of the safety power switch assemblies provides a protection mechanism for each of the power conversion assemblies.
8. The safety power switching device of claim 6, wherein:
each safety power switch assembly comprises at least two electric switches connected in series and is used for providing a protection mechanism for the power conversion device in a step-up mode and a step-down mode respectively.
9. The safety power switching device of claim 8, wherein:
the two series-connected electrical switches of each of the safety power switch assemblies are two oppositely-connected electrical switches to operate in a boost mode and a buck mode, respectively.
10. An electric vehicle comprising a voltage converter according to any one of claims 1 to 5 or a safety power switching device according to any one of claims 6 to 9.
CN202111585685.7A 2021-12-22 2021-12-22 Safety power switching device, voltage converter and electric vehicle Pending CN116345902A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202111585685.7A CN116345902A (en) 2021-12-22 2021-12-22 Safety power switching device, voltage converter and electric vehicle
PCT/EP2022/086472 WO2023117800A1 (en) 2021-12-22 2022-12-16 A safety power switching device, a voltage converter and an electrified vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111585685.7A CN116345902A (en) 2021-12-22 2021-12-22 Safety power switching device, voltage converter and electric vehicle

Publications (1)

Publication Number Publication Date
CN116345902A true CN116345902A (en) 2023-06-27

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Application Number Title Priority Date Filing Date
CN202111585685.7A Pending CN116345902A (en) 2021-12-22 2021-12-22 Safety power switching device, voltage converter and electric vehicle

Country Status (2)

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CN (1) CN116345902A (en)
WO (1) WO2023117800A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012218914A1 (en) * 2012-10-17 2014-04-17 Robert Bosch Gmbh Protective circuit arrangement for a multi-voltage network
US10439496B2 (en) * 2016-08-30 2019-10-08 Lg Chem, Ltd. Control system for transitioning a DC-DC voltage converter from a buck operational mode to a safe operational mode
NL2025504B1 (en) * 2020-05-04 2021-11-18 Prodrive Tech Bv Electrical power converter

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