CN111114369A - Charging switching device and system of alternating current/direct current electric vehicle - Google Patents
Charging switching device and system of alternating current/direct current electric vehicle Download PDFInfo
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- CN111114369A CN111114369A CN202010066269.5A CN202010066269A CN111114369A CN 111114369 A CN111114369 A CN 111114369A CN 202010066269 A CN202010066269 A CN 202010066269A CN 111114369 A CN111114369 A CN 111114369A
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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
- 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
- B60L53/60—Monitoring or controlling charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Abstract
The invention belongs to the field of electric vehicles, and discloses a charging switching device and a charging switching system of an alternating current/direct current electric vehicle, which comprise a control module and a plurality of switching units; the switching unit comprises an input terminal, an output terminal, a detection module, a power switch, a first control switch and a second control switch; a charging power loop and a charging control loop are arranged between the input terminal and the output terminal; the power switch is arranged on the charging power loop, the first control switch is arranged on the charging control loop, one end of the second control switch is connected with the charging control loop between the output terminal and the first control switch, and the other end of the second control switch is connected with the first control switch; the first control switch and the second control switch are communicated in an interlocking way; one end of the detection module is connected with the power switch, the first control switch and the second control switch, and the other end of the detection module is connected with the control module. The power supply of the output terminals is realized by controlling the switching units, so that more abundant charging loop connection modes are provided, and the utilization rate of charging facilities is improved.
Description
Technical Field
The invention belongs to the field of electric vehicle charging, and relates to a charging switching device and system of an alternating current/direct current electric vehicle.
Background
With the development of electric vehicles, in order to meet the charging requirements of the electric vehicles, a charging facility is generally arranged at the rear end of a parking space selected by a certain proportion, the electric vehicles can only be parked at the parking space for charging, but in practical application, it is not difficult to find that fuel vehicles or electric vehicles without the charging requirements occupy the charging parking space illegally, so that the utilization rate of the charging facility is low, part of the charging facility is in an idle state for a long time, and the electric vehicles with the charging requirements cannot be charged in time.
Disclosure of Invention
The present invention is directed to overcome the disadvantage of low utilization rate of charging facilities for electric vehicles in the prior art, and provides a charging switching device and system for ac/dc electric vehicles.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
in a first aspect of the present invention, a charging switching device for an ac/dc electric vehicle comprises a control module and a plurality of switching units; the switching unit comprises an input terminal, an output terminal, a detection module, a power switch, a first control switch and a second control switch;
a charging power loop and a charging control loop are arranged between the input terminal and the output terminal; the power switch is arranged on the charging power loop, the first control switch is arranged on the charging control loop, the second control switch is connected with the charging control loop between the output terminal and the first control switch, and the first control switch and the second control switch are communicated in an interlocking manner; one end of the detection module is connected with the power switch, the first control switch and the second control switch, the other end of the detection module is connected with the control module, and the detection module, the power switch, the first control switch and the second control switch are all connected with the control module;
the detection module is used for detecting and sending the state information of the power switch, the first control switch and the second control switch to the control module in real time;
the control module is used for controlling the connection and disconnection of the power switch, the first control switch and the second control switch of each switching unit according to the state information of the power switch, the first control switch and the second control switch, which is sent by the detection module of each switching unit.
The charging switching device of the AC/DC electric vehicle is further improved in that:
the emergency stop switch is connected with the control module and used for sending a switch breaking command to the control module, the control module is further used for breaking the power switch and the first control switch of the switching unit according to the received switch breaking command, and the second control switch is communicated.
The emergency stop switch is characterized by further comprising a shell, wherein the control module, the emergency stop switch and the plurality of switching units are arranged inside the shell.
In a second aspect of the present invention, a charging system for an ac/dc electric vehicle includes a power supply unit, a plurality of charging terminals, and a charging switching device;
the input terminals of a plurality of switching units of the charging switching device are connected with the output terminals of the power supply unit after being in short circuit, the output terminals of the switching units are respectively connected with a plurality of charging terminals in a one-to-one correspondence mode, and the charging terminals are respectively arranged in different charging parking places;
the control module is connected with the power supply unit, and is further used for disconnecting the power switch of the current charging switching unit from the first control switch and connecting the second control switch when receiving a charging completion signal sent by the power supply unit.
The charging system of the AC/DC electric vehicle of the invention is further improved in that:
the charging terminal is a charging gun.
The power supply unit is an alternating current charging pile or a direct current charging pile.
In a third aspect of the present invention, a charging system for an ac/dc electric vehicle comprises a power supply unit, a plurality of charging terminals, and a charging switching device;
the input terminals of a plurality of switching units of each charging switching device are all in short circuit to form the input terminals of the charging switching devices, the input terminals of all the charging switching devices are sequentially cascaded, and the input terminal of one charging switching device is connected with the output terminal of the power supply unit; the output terminals of the switching units are respectively connected with a plurality of charging terminals in a one-to-one correspondence manner, and the charging terminals are respectively arranged at different charging parking places;
all the control modules are connected with the power supply unit, and the control modules are also used for disconnecting the power switch of the current charging switching unit from the first control switch and connecting the second control switch when receiving a charging completion signal sent by the power supply unit.
In a fourth aspect of the present invention, a charging system for an ac/dc electric vehicle comprises a plurality of power supply units, a plurality of charging terminals, and a charging switching device;
the input terminals of the plurality of groups of switching units are respectively connected with the output terminals of the plurality of power supply units; the output terminals of the switching units are respectively connected with a plurality of charging terminals in a one-to-one correspondence manner, and the charging terminals are respectively arranged at different charging parking places;
the control module is connected with all the power supply units, and is further used for disconnecting the power switch of the current charging switching unit from the first control switch and connecting the second control switch when receiving a charging completion signal sent by the power supply unit.
Compared with the prior art, the invention has the following beneficial effects:
according to the charging switching device of the alternating current/direct current electric vehicle, the plurality of switching units and the control module are arranged, each switching unit is provided with one output terminal, under the control of the control module, a charging facility supplies power through the output terminals of the plurality of switching units, and the design of the plurality of output terminals facilitates the connection between the electric vehicle and the charging facility, reduces the difficulty in designing the position of the charging facility and improves the utilization rate of the charging facility of the electric vehicle; and, when a plurality of electric motor cars all need to charge, only need with all electric motor cars respectively with the output terminal of different switching units be connected can, after the electric motor car that the output terminal of a switching unit is connected charges and accomplishes like this, can realize charging of other electric motor cars through control module control switching unit's power switch, first control switch and second control switch, need not wait to charge after accomplishing, rethread manual work is changed, and then has improved the electric motor car and has charged the convenience.
Furthermore, an emergency stop switch is arranged, and when an emergency occurs, the emergency stop switch can be pressed to quickly cut off the power supply so as to achieve the purpose of protection.
According to the charging system of the alternating current/direct current electric vehicle, the plurality of charging terminals are connected with the same power supply unit through the charging switching device, the plurality of charging terminals are respectively arranged at different charging parking places, a large number of chargeable parking places are provided, the situation that only a small number of the chargeable parking places are chargeable due to the limitation of the number of charging facilities, and the electric vehicle with the charging requirement cannot be charged in time due to the fact that a fuel vehicle or the electric vehicle without the charging requirement occupies the charging parking places in an illegal way is effectively avoided, the normal use of the charging facility is not influenced even if a part of the charging parking places are occupied in the illegal way, and the utilization rate of the charging facility is further improved.
Furthermore, a plurality of charging switching devices are arranged, the utilization rate of charging facilities is further improved, meanwhile, based on the short-circuit mode of the input terminals of the switching units, the cascade mode is very simple, only the input terminals of different charging switching devices are required to be connected in a short-circuit mode in a cascade mode, the charging facilities do not need to be improved, and improvement and implementation on the existing basis are easy.
Further, the same auto-change over device that charges sets up a plurality of power supply unit, a plurality of switching unit that will charge auto-change over device divide into a plurality of groups, form the input terminal of every group switching unit after the input terminal short circuit of the switching unit that contains in every group switching unit, a plurality of groups switching unit's input terminal connects a plurality of power supply unit's output terminal respectively, only need change the short circuit mode of a plurality of switching unit of auto-change over device that charges, can realize power supply unit's expansion, construction cost has significantly reduced, and simultaneously, design based on many power supply unit, the effectual waiting time of lining up that charges that has reduced the electric motor car, satisfy the demand that the electric motor car in time charges.
Drawings
FIG. 1 is a block diagram of a charging switching device for an AC/DC electric vehicle according to the present invention;
FIG. 2 is a block diagram of a charging system for an AC/DC electric vehicle according to the present invention;
fig. 3 is a block diagram illustrating a charging system for an ac/dc electric vehicle according to another embodiment of the present invention;
fig. 4 is a block diagram illustrating a charging system for an ac/dc electric vehicle according to still another embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the charging switching device of the ac/dc electric vehicle of the present invention includes a housing, a control module, an emergency stop switch and a plurality of switching units are disposed in the housing, and the switching units include an input terminal, an output terminal, a detection module, a power switch, a first control switch and a second control switch.
The input terminals of the switching units are in short circuit to form the input end of the charging switching device, when the charging switching device is used, the input end of the charging switching device is connected with the output end of the power supply unit, the output terminals of the switching units are used as the output terminals of the charging switching device, and when the charging switching device is used, the output terminals of the charging switching device are respectively connected with a plurality of charging terminals, such as a charging gun. The input terminal and the output terminal are electrically connected with a charging power loop and a charging control loop; meanwhile, the information interaction is established between the charging switching device and the charging facility in a communication mode, and a charging command is transmitted and the charging state is fed back.
The power switch is arranged on the charging power loop between the input terminal and the output terminal and used for controlling the charging power loop; the first control switch is arranged on a charging control loop between the input terminal and the output terminal, one end of the second control switch is connected with the control loop between the output terminal and the first control switch, the other end of the second control switch is connected with the detection module, and the first control switch and the second control switch are used for controlling the charging control loop, namely, the signal switching of the charging control loop; the first control switch and the second control switch are communicated in an interlocking mode, and the second control switch is normally on.
One end of the detection module is connected with the power switch, the first control switch and the second control switch, and the other end of the detection module is connected with the control module and used for detecting the current states of the power switch, the first control switch and the second control switch, obtaining the current state information of the power switch, the first control switch and the second control switch and sending the current state information to the control module.
The control module identifies the actual states of the power switch, the first control switch and the second control switch of each switching unit through the detection circuit, controls the power switch, the first control switch and the second control switch to be switched on or switched off according to corresponding logics, and simultaneously provides the states of the charging power loop and the charging control loop of each switching unit. The control module detects whether a charging terminal connected with an output terminal of each switching unit is connected with the electric automobile or not according to the current state information of the power switch, the first control switch and the second control switch of each switching unit, charging queuing information is formed according to the connection sequence of all the switching units and other conditions, then the power switch and the first control switch of the corresponding switching unit are closed according to the queuing information, the second control switch is disconnected, at the moment, the power supply unit confirms the connection state of the charging terminal and the electric automobile or other charging conditions again through the first control switch, and after the charging conditions are met, the power supply unit completes the charging process according to normal charging logic; after charging is finished, the power switches and the first control switches of the corresponding switching units are automatically disconnected, the internal control module closes the power switches and the first control switches of other switching units again according to the queuing information, disconnects the second control switches, and the like to finish the charging requirement in a polling charging mode.
In the above embodiment, the first control switch and the second control switch are interlocked, and the second control switch is used to detect whether the charging terminal connected to the output terminal of each switching unit is connected to the electric vehicle, that is, whether there is a charging requirement is determined by the second control switch, and then, under the condition that there is a charging requirement, the control module is used to control the power switch of the corresponding switching unit and the first control switch to be turned on, and the second control switch is turned off, at this time, the power supply unit and the electric vehicle are effectively connected through the power switch and the first control switch, and the connection state of the electric vehicle is confirmed again through the power supply unit. Through this embodiment, can effectively guarantee the validity of charging.
The emergency stop switch is connected with the control module, and when an emergency occurs, the emergency stop switch can be pressed to quickly cut off the power supply so as to achieve the purpose of protection. The emergency stop switch is connected with an input port of the control module through the normally closed contact, when the control module detects that the level signal of one input port changes, the control module immediately informs the power supply unit of 'emergency stop fault' in a communication mode, simultaneously disconnects the corresponding power switch and the first control switch, and closes the second control switch; after the power supply unit receives the 'emergency stop fault', the output of the power supply unit can be immediately blocked.
Referring to fig. 2, the charging system for the ac/dc electric vehicle of the present invention includes the above charging switching device, a power supply unit, and a plurality of charging terminals. The input terminals of a plurality of switching units of the charging switching device are respectively connected with the power supply unit after being in short circuit, the output terminals of the switching units are respectively connected with a plurality of charging terminals, one output terminal corresponds to one charging terminal, and when the charging switching device is used, the charging terminals are connected with the alternating/direct current electric vehicle. The power supply unit is an independent charging loop (including a charging power charging loop and a charging control loop) of a charging facility of an ac/dc electric vehicle, which may be dc or ac, such as a dc charging pile and an ac charging pile, and in addition, the charging facility includes a plurality of power supply units because it is considered that the charging facility may be a group charging system, i.e., 1 charging facility may simultaneously supply power to a plurality of charging terminals.
The charging switching device adopts an independent control power supply or a power supply which is taken from the interior of the charging facility and establishes communication with the charging facility, so that the circuit connection of a single power supply unit for charging a plurality of charging parking spaces through the charging switching device is completed. When the charging terminal is connected with the electric vehicle, the control module in the charging switching device detects the connection state, immediately closes the power switch and the first control switch of the corresponding switching unit, disconnects the second control switch, and then charges the electric vehicle according to a normal charging logic; after the charging is finished, the power switch and the first control switch of the switching unit are automatically disconnected, the second control switch is closed, in the charging process, information interaction is realized between the charging facility and the control module in the switching device in a communication mode, after the charging is finished, the power supply unit immediately blocks output, a charging completion instruction is issued to the control module, the control module immediately disconnects the corresponding power switch and the first control switch after receiving the instruction, the second control switch is closed, if other charging terminals are connected with the electric vehicle, the power switch and the first control switch of other corresponding switching units are automatically closed, the second control switch is disconnected, and other electric vehicles are sequentially charged in a polling mode. Even partial charging parking stall is taken in violation of rules and regulations, does not influence the normal use of this power supply unit yet, and then has improved the rate of utilization that fills electric pile.
Assuming that the charge switching device has 6 switching units in total, 6 charge terminals can be connected. The charging switching device adopts an independent control power supply or obtains a power supply inside the charging facility, and establishes communication with the charging facility, the input terminals of the 1# to 6# switching units are respectively connected with the output terminals of the power supply unit after being in short circuit, the output terminals of the 1# to 6# switching units are connected to the charging terminals on the charging parking places, then the power supply unit is effectively connected with the 1# to 6# charging parking places through the charging switching device, and when the 1# charging parking places occupy the charging parking places illegally, the power supply unit can still charge the 2# to 6# charging parking places.
Referring to fig. 3, another embodiment of the charging system for an ac/dc electric vehicle according to the present invention includes a plurality of charging switching devices, a power supply unit, and a plurality of charging terminals.
When a single charging switching device still can not effectively improve the utilization rate of the charging pile, a cascade mode can be adopted, the input terminals of the switching units of a plurality of charging switching devices are respectively connected with the output terminals of the power supply unit after short circuit, and then more charging terminals are effectively connected with the power supply unit, so that the charging requirement of the electric vehicle is met, the utilization rate of the charging pile is improved, and the early investment of the charging parking space is reduced.
Assuming that the charge switching device has 6 switching units in total, 6 charge terminals can be connected. The 1# charging switching device adopts an independent control power supply or a power supply taken from the interior of the charging facility and establishes communication with the charging facility, the input terminals of the 1# to 6# switching units of the 1# charging switching device are respectively connected with the output terminals of the power supply unit after being short-circuited, the input terminals of the 1# to 6# switching units of the 2# charging switching device are respectively connected with the input terminals of the switching units of the 1# charging switching device after being short-circuited, the 2# charging switching device adopts an independent control power supply or a power supply taken from the 1# charging switching device and establishes communication with the charging facility through the 1# charging switching device, the output terminals of the 1# charging switching device and the 1# to 6# charging switching units of the 2# charging switching device are connected to the charging terminals on each charging parking space, so that the effective connection between the power supply unit and 12 charging parking spaces is established, and when any one or more charging parking spaces are occupied illegally, the power supply unit can still charge other any remaining charging parking spaces.
Referring to fig. 4, another embodiment of the charging system for an ac/dc electric vehicle according to the present invention includes the above charging switching device, a plurality of power supply units, and a plurality of charging terminals. The current electric motor car quantity is relatively low, and single power supply unit can satisfy electric automobile demand of charging through a auto-change over device that charges, has also improved simultaneously and has filled the electric pile rate of utilization, nevertheless improves along with later stage electric motor car quantity year by year, and this mode will not satisfy the normal demand of charging of electric motor car, will lead to charging the queuing time overlength, and user experience is not good, can adopt a plurality of power supply unit modes this moment, reduces the waiting time of lining up of charging, satisfies the demand that the electric motor car in time charges. This embodiment need not reform transform original external charging circuit, only needs to demolish the inside part short-circuit wire of single auto-change over device that charges, again with newly-built power supply unit, 2# power supply unit establish line connection promptly can, significantly reduced construction cost.
Assuming that the charge switching device has 6 switching units in total, 6 charge terminals can be connected. The charging switching device adopts an independent control power supply or a power supply which is taken from the interior of the charging facility and establishes communication with the charging switching device, the input terminals of the 1#, 2#, 3# switching units are respectively connected with the output terminal of the 1# power supply unit after being short-circuited, the input terminals of the 4#, 5#, 6# switching units are respectively connected with the output terminal of the 2# power supply unit after being short-circuited, the output terminals of the 1# -6 # switching units are connected to the charging terminal on the charging parking space, the 1# power supply unit is effectively connected with the 1#, 2# and 3# charging parking spaces through the charging switching device, and the 2# power supply unit is effectively connected with the 4#, 5# and 6# charging parking spaces through the charging switching device. When the 1# or 6# charging parking space is occupied illegally, the 1# power supply unit can still charge the 2# and 3# charging parking spaces, the 2# power supply unit can still charge the 4# and 5# charging parking spaces, and other combination modes can be realized through the charging switching device, for example, the 1# power supply unit is only effectively connected with the 1# charging parking space, and the 2# power supply unit is effectively connected with the 2# to 6# charging parking spaces.
The charging switching device and the charging switching system of the alternating current/direct current electric vehicle can solve the problem that the electric vehicle cannot be charged in time due to low utilization rate of a charging pile caused by illegal occupation of the charging parking space under the condition that the number of the current electric vehicles is relatively low, reduce the early-stage project investment of the charging parking space, and realize the purpose of capacity expansion and efficiency improvement on the premise of not changing an original charging line under the condition that the charging requirement of the electric vehicle is blowout in the future, thereby reducing the later-stage project investment and optimizing the overall project investment.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (8)
1. A charging switching device of an AC/DC electric vehicle is characterized by comprising a control module and a plurality of switching units; the switching unit comprises an input terminal, an output terminal, a detection module, a power switch, a first control switch and a second control switch;
a charging power loop and a charging control loop are arranged between the input terminal and the output terminal; the power switch is arranged on the charging power loop, the first control switch is arranged on the charging control loop, the second control switch is connected with the charging control loop between the output terminal and the first control switch, and the first control switch and the second control switch are communicated in an interlocking manner; one end of the detection module is connected with the power switch, the first control switch and the second control switch, the other end of the detection module is connected with the control module, and the detection module, the power switch, the first control switch and the second control switch are all connected with the control module;
the detection module is used for detecting and sending the state information of the power switch, the first control switch and the second control switch to the control module in real time;
the control module is used for controlling the connection and disconnection of the power switch, the first control switch and the second control switch of each switching unit according to the state information of the power switch, the first control switch and the second control switch, which is sent by the detection module of each switching unit.
2. The charging switching apparatus of an ac/dc electric vehicle as claimed in claim 1, further comprising an emergency stop switch connected to the control module for sending a switch-off command to the control module, the control module further for switching off the power switch of the switching unit and the first control switch according to the received switch-off command, and the second control switch is connected.
3. The charging switching device of an ac/dc electric vehicle as claimed in claim 2, further comprising a housing, wherein the control module, the emergency stop switch and the plurality of switching units are disposed inside the housing.
4. A charging system for an ac/dc electric vehicle, comprising a power supply unit, a plurality of charging terminals, and the charging switching device of any one of claims 1 to 3;
the input terminals of a plurality of switching units of the charging switching device are connected with the output terminals of the power supply unit after being in short circuit, the output terminals of the switching units are respectively connected with a plurality of charging terminals in a one-to-one correspondence mode, and the charging terminals are respectively arranged in different charging parking places;
the control module is connected with the power supply unit, and is further used for disconnecting the power switch of the current charging switching unit from the first control switch and connecting the second control switch when receiving a charging completion signal sent by the power supply unit.
5. The charging system for an ac/dc electric vehicle according to claim 4, wherein the charging terminal is a charging gun.
6. The system of claim 4, wherein the power supply unit is an AC charging post or a DC charging post.
7. A charging system for AC/DC electric vehicles, comprising a power supply unit, a plurality of charging terminals and a plurality of charging switching devices according to any one of claims 1 to 3;
the input terminals of a plurality of switching units of each charging switching device are all in short circuit to form the input terminals of the charging switching devices, the input terminals of all the charging switching devices are sequentially cascaded, and the input terminal of one charging switching device is connected with the output terminal of the power supply unit; the output terminals of the switching units are respectively connected with a plurality of charging terminals in a one-to-one correspondence manner, and the charging terminals are respectively arranged at different charging parking places;
all the control modules are connected with the power supply unit, and the control modules are also used for disconnecting the power switch of the current charging switching unit from the first control switch and connecting the second control switch when receiving a charging completion signal sent by the power supply unit.
8. A charging system for an ac/dc electric vehicle, comprising a plurality of power supply units, a plurality of charging terminals, and the charging switching device of any one of claims 1 to 3;
the input terminals of the plurality of groups of switching units are respectively connected with the output terminals of the plurality of power supply units; the output terminals of the switching units are respectively connected with a plurality of charging terminals in a one-to-one correspondence manner, and the charging terminals are respectively arranged at different charging parking places;
the control module is connected with all the power supply units, and is further used for disconnecting the power switch of the current charging switching unit from the first control switch and connecting the second control switch when receiving a charging completion signal sent by the power supply unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010066269.5A CN111114369A (en) | 2020-01-20 | 2020-01-20 | Charging switching device and system of alternating current/direct current electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010066269.5A CN111114369A (en) | 2020-01-20 | 2020-01-20 | Charging switching device and system of alternating current/direct current electric vehicle |
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| CN111114369A true CN111114369A (en) | 2020-05-08 |
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Citations (8)
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|---|---|---|---|---|
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