CN114537192A - Vehicle and charging system thereof - Google Patents
Vehicle and charging system thereof Download PDFInfo
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- CN114537192A CN114537192A CN202011312976.4A CN202011312976A CN114537192A CN 114537192 A CN114537192 A CN 114537192A CN 202011312976 A CN202011312976 A CN 202011312976A CN 114537192 A CN114537192 A CN 114537192A
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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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- 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
- B60L53/10—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 the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
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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
- Y02T90/14—Plug-in electric vehicles
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- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a vehicle and a charging system thereof. The charging system comprises a socket, a battery system, a communication control module and a vehicle-mounted charger. The battery system comprises a first charging loop and a second charging loop, the first charging loop is directly connected with a direct current interface of the socket, and the second charging loop is connected with a direct current output end of the vehicle-mounted charger. And the alternating current output end of the vehicle-mounted charger is connected with the alternating current interface of the socket. The communication control module and the vehicle-mounted charger are respectively connected with the CP end of the control interface of the socket. In response to the fact that the external direct-current charging gun is inserted into the socket, the communication control module detects that the first CP signal starts to work, and the battery system is charged through the first charging loop. And responding to the insertion of the external alternating current charging gun into the socket, the vehicle-mounted charger detects that the second CP signal starts to work, and the battery system is charged through the second charging loop. According to the invention, the vehicle end has a combined charging function and can be suitable for European standard alternating current charging or direct current charging.
Description
Technical Field
The present invention relates to the field of electric vehicles, and more particularly to a vehicle employing european charging standards and a charging system therefor.
Background
The new energy automobile adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel but adopts a novel vehicle-mounted power device), integrates advanced technologies in the aspects of power control and driving of the automobile, and forms an automobile with advanced technical principle, new technology and new structure. New energy automobile includes: hybrid Electric Vehicles (HEV), electric only vehicles (BEV), fuel cell vehicles (FCEV), hydrogen engine vehicles as well as gas vehicles, alcohol ether vehicles, and the like.
At present, research and development of new energy automobiles mainly focus on electric automobiles using electric energy as driving force. With the continuous development of science and technology and society in recent years, electric vehicles are more and more favored by people due to the characteristics of energy conservation, environmental protection, low noise, good user experience and the like.
In order to obtain electric energy, electric vehicles are generally supplied with energy through charging piles matched with the electric vehicles. With the increasing diversification of electric vehicle and charging pile systems, interoperability and standard conformance between different components becomes increasingly important. In order to identify the interruption source during the charging process and perform reliability and robustness tests for various interferences, a consistency coverage test needs to be performed in an open test system. There are currently three charging protocol standards worldwide: the Combined Charging System (CCS) is adopted in europe and north america, and the IEC62196-2/3, IEC61854(PWM) ISO15118 and other standards are implemented. GB/T27930 and GB/T18487 are used in China, and CHAdemo is used in Japan. The differentiation between these standards is in the charging plug/interface combination, the underlying physical connection and the protocol used for communication between the vehicle and the charging infrastructure. The CCS is Power Line Communication (PLC) based on an ethernet protocol.
The new energy vehicles produced in China at present are influenced by national standards, direct current charging is mostly adopted in countries of export Europe, southeast Asia and the like, and application scenes are limited. Although the european standard charging system implementing the european standard has defined a combined charging interface with an ac/dc integration function, such as a combined charging system CCS, in terms of the interface, in practical applications, the vehicle end only has a function of implementing one charging mode, and cannot implement ac/dc integration, because of the simple and convenient control strategy.
Therefore, there is a need for a vehicle and a charging system thereof, which can integrate ac and dc for charging and can be adapted to euro ac charging or dc charging, thereby expanding the application range.
Disclosure of Invention
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
As described above, in order to further expand the range of application of new energy vehicles exported from the charging point of view to regions such as europe, america, and southeast asia, an aspect of the present invention provides a vehicle-side charging system, including:
the socket comprises a direct current interface, an alternating current interface and a control interface;
the battery system comprises a first charging loop and a second charging loop, and the direct current interface is directly connected to the first charging loop;
the communication control module is directly connected with the CP end of the control interface; and
the vehicle-mounted charger is directly connected with the CP end of the control interface, the alternating current input end of the vehicle-mounted charger is connected with the alternating current interface, and the direct current output end of the vehicle-mounted charger is connected to the second charging loop; wherein
Responding to the insertion of an external direct current charging gun into the socket, outputting a first CP signal by the CP end, and entering a working state after the communication control module detects the first CP signal so as to charge the battery system through the first charging loop;
and responding to the insertion of an external alternating current charging gun into the socket, outputting a second CP signal by the CP end, and entering a working state after the vehicle-mounted charger detects the second CP signal so as to charge the battery system through the second charging loop.
In an embodiment of the charging system, optionally, the communication control module is directly connected to the electronic lock control end of the control interface; wherein
And after the communication control module enters a working state, outputting a control signal to the electronic lock control end to control the electronic lock to be closed, and monitoring the state of the electronic lock based on the electronic lock control end.
In the embodiment, the electronic lock control function is added, so that the external charging gun can be prevented from being pulled out by artificial misoperation in the charging process, and the safety protection effect is achieved. Furthermore, the electronic lock control end can be independently controlled by the communication control module, so that the control of the communication control module can be only responded when the direct current charging is carried out, and the control complexity can be reduced. Meanwhile, the vehicle-mounted charger is not required to keep working, so that the power consumption can be effectively reduced.
In an embodiment of the charging system, optionally, the vehicle-mounted charger is directly connected to the electronic lock control end of the control interface; wherein
And after the vehicle-mounted charger enters a working state, outputting a control signal to the electronic lock control end to control the electronic lock to be closed, and monitoring the state of the electronic lock based on the electronic lock control end.
In the embodiment, the electronic lock control function is added, so that the external charging gun can be prevented from being pulled out by artificial misoperation in the charging process, and the safety protection effect is achieved. Furthermore, the electronic lock control end can be independently controlled by the vehicle-mounted charger, so that the control of the vehicle-mounted charger can be only responded when the alternating current charging is carried out, and the control complexity can be reduced. Meanwhile, the communication control module is not required to keep working, so that the power consumption can be effectively reduced.
In an embodiment of the charging system, optionally, the battery system further includes a PP signal detection interface, where the PP signal detection interface is directly connected to the PP terminal of the control interface; wherein
In response to the detection of the PP signal output by the PP terminal, the battery system outputs a control signal to enable the vehicle to be in a driving prohibition state.
After the external charging gun is inserted into the charging socket, the PP signal can change, and whether the external charging gun is inserted into the charging socket or not is detected by detecting the PP signal. In the invention, the work of PP signal detection is executed by the battery system, mainly because in the consideration of reducing power consumption, the communication control module and the vehicle-mounted charger are in a dormant state after charging is finished, the PP signal cannot be continuously and effectively detected, if the external charging gun is started without pulling out the vehicle from the socket, the vehicle and the external charging gun are both affected, therefore, the PP signal detection interface is arranged in the battery system, and the functions of reducing energy consumption and ensuring safety can be achieved.
In an embodiment of the charging system, optionally, the duty ratios of the first CP signal and the second CP signal are different.
In an embodiment of the charging system, optionally, the vehicle-mounted charger enters a sleep state after detecting the first CP signal; and/or
And the communication control module enters a dormant state after detecting the second CP signal.
If the vehicle-mounted charger detects that the CP signal corresponds to the direct-current charging mode, the vehicle-mounted charger can be switched into a dormant state to reduce power consumption because the vehicle-mounted charger does not have any function in the direct-current charging mode in the charging system. Similarly, if the communication control module detects that the CP signal corresponds to the ac charging mode, since the communication control module does not have any function in the ac charging mode in the charging system of the present invention, the communication control module can be switched to the sleep mode to reduce power consumption.
In an embodiment of the charging system, optionally, the battery system further includes a CAN bus interface, and the communication control module and the vehicle-mounted charger are directly connected to the CAN bus interface respectively, so as to obtain battery management information output by a battery management system of the battery system through the CAN bus respectively in a working state.
In an embodiment of the charging system, optionally, the communication control module converts the battery management information into a charging parameter CP signal output to the CP end in an operating state, so that the external charging pile adjusts the voltage and the current output to the first charging loop through the dc interface based on the charging parameter CP signal.
In an embodiment of the charging system, optionally, the vehicle-mounted charger determines a charging parameter according to the battery management information in a working state, so as to adjust the voltage and the current output to the second charging loop through the dc output terminal.
In an embodiment of the charging system, optionally, the vehicle-mounted charger includes a current conversion module, the current conversion module converts ac power input from the ac interface into dc power output to the battery system through the dc output terminal, and the current conversion module adjusts output of the dc output terminal based on the charging parameter.
In an embodiment of the charging system, optionally, the receptacle is a euro standard receptacle that implements a european charging standard.
Another aspect of the present invention also provides a vehicle, wherein the vehicle includes the charging system described in any one of the above embodiments.
According to the vehicle and the charging system thereof provided by the invention, the battery system can adapt to different charging modes by arranging the double charging loops, and the application scene of a new energy vehicle can be maximized by combining the control relation among the European standard charging socket, the vehicle-mounted charger and the communication control module.
Drawings
The above features and advantages of the present disclosure will be better understood upon reading the detailed description of embodiments of the disclosure in conjunction with the following drawings. In the drawings, components are not necessarily drawn to scale, and components having similar relative characteristics or features may have the same or similar reference numerals.
Fig. 1 shows a schematic structural diagram of a charging system provided according to an aspect of the present invention.
Fig. 2 is a schematic structural diagram illustrating a current conversion module included in the vehicle-mounted charger according to an aspect of the present invention.
Reference numerals
100 socket
200 battery system
300 communication control module
400 vehicle-mounted charger
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. It is noted that the aspects described below in connection with the figures and the specific embodiments are only exemplary and should not be construed as imposing any limitation on the scope of the present invention.
The following description is presented to enable any person skilled in the art to make and use the invention and is incorporated in the context of a particular application. Various modifications, as well as various uses in different applications will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to a wide range of embodiments. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
In the following detailed description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the practice of the invention may not necessarily be limited to these specific details. In other instances, well-known structures and devices are shown in block diagram form, rather than in detail, in order to avoid obscuring the present invention.
The reader's attention is directed to all papers and documents which are filed concurrently with this specification and which are open to public inspection with this specification, and the contents of all such papers and documents are incorporated herein by reference. All the features disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.
Note that where used, the designations left, right, front, back, top, bottom, positive, negative, clockwise, and counterclockwise are used for convenience only and do not imply any particular fixed orientation. In fact, they are used to reflect the relative position and/or orientation between the various parts of the object. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
It is noted that, where used, further, preferably, still further and more preferably is a brief introduction to the exposition of the alternative embodiment on the basis of the preceding embodiment, the contents of the further, preferably, still further or more preferably back band being combined with the preceding embodiment as a complete constituent of the alternative embodiment. Several further, preferred, still further or more preferred arrangements of the belt after the same embodiment may be combined in any combination to form a further embodiment.
The invention is described in detail below with reference to the figures and specific embodiments. It is noted that the aspects described below in connection with the figures and the specific embodiments are only exemplary and should not be construed as imposing any limitation on the scope of the present invention.
As described above, in order to further expand the application range of new energy vehicles exported to regions such as europe, america, and southeast asia from the charging perspective, an aspect of the present invention provides a vehicle-side charging system, and please refer to fig. 1 for understanding the charging system provided by an aspect of the present invention. As shown in fig. 1, the charging system provided by the present invention includes a socket 100, a battery system 200, a Communication control module 300 (EVCC), and an On-board charger 400 (OBC).
Specifically, referring to fig. 1, the socket 100 includes a dc interface, an ac interface and a control interface. The direct current interface comprises a DC + and a DC-, the alternating current interface comprises N, L1/L, L2 and L3, and the Control interface comprises an electronic Lock Control end Lock, a CP end (Control Pilot), a PE end (Protective Earth) and a PP end (maximum Pilot).
As described above, since the charging system provided by the present invention is designed to solve the problem of adaptability of charging vehicles exported to countries or regions such as europe and america, the sockets described above are sockets compliant with the IEC62196-2/3 standard. The functions and functions of the interfaces are defined in the IEC62196-2/3 standard, and those skilled in the art can understand the sockets according to the IEC62196-2/3 standard, and the detailed functions of the sockets are not described herein.
The battery system 200 provided by the present invention comprises two charging loops, wherein the first charging loop is directly connected to the DC interfaces DC + and DC-of the socket 100. The second charging loop is connected with the direct current output end DC + and DC-of the vehicle-mounted charger 400. The AC input end of the vehicle-mounted charger 400 is connected with the AC interfaces N, L1/L, L2 and L3. It is to be understood that the charging circuit described above may be a circuit capable of inputting external energy to an energy storage element of the battery system, and may further include the energy storage element. Those skilled in the art can design the charging circuit according to actual needs, and the specific implementation manner of the charging circuit should not unduly limit the protection scope of the present invention.
As shown in fig. 1, the communication control module 300 and the vehicle-mounted charger 400 are directly connected to the Lock control end, the CP end, and the PE end of the control interface, respectively. In the charging system provided by the present invention, the communication control module 300 and the vehicle-mounted charger 400 are powered on and are in a sleep state when not in operation.
And responding to the insertion of an external direct current charging gun into the socket, outputting a first CP signal by the CP end, and entering a working state after the communication control module detects the first CP signal so as to charge the battery system through the first charging loop.
And responding to the insertion of an external alternating current charging gun into the socket, outputting a second CP signal by the CP end, and entering a working state after the vehicle-mounted charger detects the second CP signal so as to charge the battery system through the second charging loop.
It can be understood that, under the european standard, the CP signals output by the CP end external ac charging pile and the external dc charging pile are different, and the CP signals are different in voltage duty ratio. For example, when a CP signal with a duty cycle of 3% to 7% (i.e., 5% ± 2%) is detected, it means that a dc charging gun is inserted into the receptacle 100. When a CP signal of 8% to 97% duty cycle is detected, it means that an ac charging gun is inserted into the outlet 100.
It is understood that, in view of reducing power consumption, the communication control module 300 and the on-board charger 400 are normally kept in a sleep state. The voltage detection modules of the communication control module 300 and the vehicle-mounted charger 400 are kept on line with low power consumption. When a CP signal is detected, the voltage detection modules of the communication control module 300 and the vehicle-mounted charger 400 respectively determine the received CP signal, and if it is determined that the duty ratio is 3% -7% (i.e., 5% ± 2%) corresponding to the dc charging gun, the voltage detection module of the communication control module 300 wakes up the communication control module 300 to enter a working state, and the voltage detection module of the vehicle-mounted charger 400 does not wake up the entire vehicle-mounted charger 400 any more, so that the vehicle-mounted charger 400 continuously sleeps. Similarly, if the duty ratio is 8% to 97% corresponding to the dc charging gun, the voltage detection module of the vehicle-mounted charger 400 is turned on to enter the working state of the entire vehicle-mounted charger 400, and the voltage detection module of the communication control module 300 does not wake up the communication control module 300 any more, so that the communication control module 300 continues to be in the sleep state.
As described above, the communication control module 300 is directly connected to the electronic lock control end of the control interface; after the communication control module 300 enters the working state and before the formal charging is started, the communication control module 300 outputs a control signal to the electronic lock control terminal to control the electronic lock to be closed, and monitors the state of the electronic lock based on the electronic lock control terminal.
In the embodiment, the electronic lock control function is added, so that the external charging gun can be prevented from being pulled out by artificial misoperation in the charging process, and the safety protection effect is achieved. Further, since the electronic lock control terminal can be independently controlled by the communication control module 300, the control of the communication control module 300 can be only responded when the direct current charging is performed, and the control complexity can be reduced. Meanwhile, the vehicle-mounted charger is not required to keep 400 working, so that the power consumption can be effectively reduced.
Similarly, the vehicle-mounted charger 400 is directly connected to the electronic lock control end of the control interface; after the vehicle-mounted charger 400 enters the working state and before formal charging starts, a control signal is output to the electronic lock control terminal to control the electronic lock to be closed, and the state of the electronic lock is monitored based on the electronic lock control terminal.
In the embodiment, the electronic lock control function is added, so that the external charging gun can be prevented from being pulled out by artificial misoperation in the charging process, and the safety protection effect is achieved. Furthermore, since the electronic lock control terminal can be independently controlled by the vehicle-mounted charger 400, the control terminal can only respond to the control of the vehicle-mounted charger 400 during alternating current charging, and the control complexity can be reduced. Meanwhile, since the communication control module 300 is not required to keep working, power consumption can be effectively reduced.
Referring to fig. 1, as shown in fig. 1, the battery system 200 further includes a PP signal detection interface, and the PP signal detection interface is directly connected to the PP terminal of the control interface. It is understood that the PP terminal of the socket 100 indicates whether the external charging gun is inserted into the charging socket 100 by giving a resistance signal. In the present invention, the PP signal detection is performed by the battery system 200. That is, when the battery system 200 detects the PP signal, indicating that the gun is plugged, the charging connection status is fed back to the entire vehicle, so that the vehicle is in the non-driving state. When the battery system 200 outputs the charge connection state or the control signal to the entire vehicle, the entire vehicle may prohibit the vehicle from traveling by controlling the motor to output the torque. In another embodiment, after the battery system 200 detects the PP signal, the battery system can directly output a control signal to the discharging circuit of the vehicle-mounted charger 400, so as to control the discharging circuit not to work to cut off the power source of the vehicle.
In the above embodiment, the detection of the PP signal is performed by the battery system 200, mainly because in consideration of reducing power consumption, the communication control module 300 and the vehicle-mounted charger 400 are both in a sleep state after charging is completed, and cannot continue to effectively detect the PP signal, and if the external charging gun is not pulled out of the socket 100, the vehicle is started, and both the vehicle and the external charging gun are adversely affected, so that the PP signal detection interface is provided in the battery system 200, which can achieve the functions of reducing energy consumption and ensuring safety.
As described above, the in-vehicle charger 400 according to the present invention enters the sleep state after detecting the first CP signal corresponding to the dc charging. The communication control module 300 enters a sleep state after detecting the second CP signal corresponding to the ac charging.
In the charging system provided by the invention, the charging mode of the vehicle-mounted charger 400 does not have any function, so that the vehicle-mounted charger can be switched into a dormant state to reduce power consumption. Similarly, the communication control module 300 does not have any function in the ac charging mode, and thus can be switched to the sleep mode to reduce power consumption
As shown in fig. 1, the battery system 200 further includes a CAN bus interface, and the communication control module 300 and the vehicle-mounted charger 400 are directly connected to the CAN bus interface respectively, so as to obtain battery management information output by a Battery Management System (BMS) of the battery system through the CAN bus respectively in a working state.
In the above embodiment, the communication control module 300 converts the battery management information into the charging parameter CP signal output to the CP end in an operating state, so that the external charging pile adjusts the voltage and current output to the first charging loop through the dc interface based on the charging parameter CP signal. It will be appreciated that the above data conversion process includes converting the CAN message to a PLC and PWM based carrier.
In the above embodiment, the vehicle-mounted charger 400 determines the charging parameters according to the battery management information in an operating state to adjust the voltage and the current output to the second charging loop through the dc output terminal.
It can be understood that the vehicle-mounted charger 400 is a device fixedly installed on a new energy vehicle, and is used for converting electric energy of a nominal voltage value of a public alternating current power grid into direct current and charging a vehicle-mounted energy storage system such as a power battery and the like. Therefore, the vehicle-mounted charger 400 at least includes a current conversion module, the current conversion module converts the ac power input from the ac interface into the dc power output to the battery system through the dc output terminal, and the current conversion module adjusts the output of the dc output terminal based on the charging parameter.
Please refer to fig. 2 for understanding the current converting module. Fig. 2 shows a schematic diagram of a current conversion module suitable for a vehicle-mounted charger. As shown in fig. 2, the current conversion module may include a three-phase pre-charge and input filter module, a PWM rectifier module, and a full-bridge LLC conversion module. Therefore, the electric energy of the nominal voltage of the public alternating current power grid can be effectively converted into the electric energy for charging the energy storage system of the new energy vehicle. It should be understood that the structure shown in fig. 2 is only one embodiment of the current conversion module in the vehicle-mounted charger, and the illustration of the structure should not unduly limit the scope of the present invention, and those skilled in the art may adopt the existing or future vehicle-mounted charger and the current conversion module therein to implement the function of the vehicle-mounted charger.
Based on the description, the invention can respectively realize the vehicle European standard alternating current charging and the direct current charging, and the two charging modes work independently, thereby increasing the application scene of the vehicle European standard charging and simultaneously improving the stability of the charging system.
To more specifically illustrate the operation of the charging system provided by the present invention, the following describes the operation of the charging system provided by the present application after an external charging gun is inserted into the socket provided by the present application from two parts, dc charging and ac charging.
Direct current charging:
when an external direct-current charging gun is inserted, the EVCC and the OBC detect that CP signals wake up to work, and judge to enter a direct-current charging process when detecting a 5% (+ -2%) duty ratio, wherein the communication control module 300 enters a working state, and the vehicle-mounted charger 400 enters a sleeping state again. The battery system 200 determines to enter the dc charging according to the message, and performs communication using the dc charging protocol, and performs charging through the first charging loop. The EVCC closes the electronic lock before formal charging, starts PLC communication with an external charging pile and CAN communication with a battery management system, and controls the electronic lock to be unlocked after charging is finished, so that a direct-current charging process is completed.
The specific direct current charging process is as follows:
1) inserting a gun for connection, detecting a CP signal with a duty ratio of 3% -7%, judging by the EVCC to enter direct current charging, and keeping the OBC in a dormant state;
2) the battery system is self-checked after being awakened, and simultaneously, a PP signal is detected, so that the vehicle is in a driving prohibition state;
3) the charging is ready, the EVCC controls the electronic lock to be closed, and the state of the electronic lock is detected in real time;
4) in the charging process, the EVCC communicates with the charging pile, and communicates with a battery system at the same time to exchange charging parameters;
5) after charging is finished, the EVCC controls the electronic lock to unlock, and the electronic lock enters a dormant state after losing the CP signal for 3 minutes;
6) when the PP signal disappears, the battery releases the vehicle driving prohibition state.
(II) alternating current charging:
after inserting the gun, the EVCC and the OBC detect CP signals to wake up the work, the duty ratio of 8% -97% is detected, the AC charging process is judged to enter, wherein the OBC enters a working state, and the EVCC enters a sleeping state again. And the battery system judges to enter alternating current charging according to the message and adopts an alternating current charging protocol for communication. The OBC controls the electronic lock to be locked before formal charging and controls the electronic lock to be unlocked after charging is finished.
The specific alternating current charging process is as follows:
1) inserting a gun for connection, detecting a CP signal with 8% -97% duty ratio, judging to enter alternating current charging by the OBC, and keeping the EVCC in a dormant state;
2) the battery system is self-checked after being awakened, and simultaneously, a PP signal is detected, so that the vehicle is in a driving prohibition state;
3) the charging is ready, the OBC controls the electronic lock to be closed, and the state of the electronic lock is detected in real time;
4) in the charging process, the OBC communicates with the charging pile and the battery system at the same time, and charging parameters are interacted;
5) after charging, the OBC controls the electronic lock to unlock and enters a dormant state after losing the CP signal for 3 minutes;
6) when the PP signal disappears, the battery releases the vehicle driving prohibition state.
Thus, a specific implementation of the charging system provided by an aspect of the present invention has been described. According to the charging system provided by the invention, the battery system can adapt to different charging modes by arranging the double charging loops, and the application scene of a new energy vehicle can be maximized by combining the control relation among the European standard charging socket, the vehicle-mounted charger and the communication control module.
Another aspect of the present invention also provides a vehicle, wherein the vehicle includes the charging system described in any one of the above embodiments. According to the vehicle provided by the invention, the European standard alternating current charging and the direct current charging of the vehicle can be respectively realized, and the two charging modes work independently, so that the European standard charging application scenes of the vehicle are increased, and the stability of a charging system is improved.
The various illustrative logical modules, and circuits described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.
In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software as a computer program product, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a web site, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk (disk) and disc (disc), as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), floppy disk and blu-ray disc where disks (disks) usually reproduce data magnetically, while discs (discs) reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. It is to be understood that the scope of the invention is to be defined by the appended claims and not by the specific constructions and components of the embodiments illustrated above. Those skilled in the art can make various changes and modifications to the embodiments within the spirit and scope of the present invention, and such changes and modifications also fall within the scope of the present invention.
Claims (12)
1. A charging system on a vehicle side, characterized by comprising:
the socket comprises a direct current interface, an alternating current interface and a control interface;
a battery system including a first charging loop and a second charging loop, the DC interface being directly connected to the first charging loop;
the communication control module is directly connected with the CP end of the control interface; and
the vehicle-mounted charger is directly connected with the CP end of the control interface, the alternating current input end of the vehicle-mounted charger is connected with the alternating current interface, and the direct current output end of the vehicle-mounted charger is connected to the second charging loop; wherein
Responding to the fact that an external direct current charging gun is inserted into the socket, the CP end outputs a first CP signal, and the communication control module enters a working state after detecting the first CP signal, so that the battery system is charged through the first charging loop;
and responding to the insertion of an external alternating current charging gun into the socket, outputting a second CP signal by the CP end, and enabling the vehicle-mounted charger to enter a working state after detecting the second CP signal so as to charge the battery system through the second charging loop.
2. The charging system of claim 1, wherein the communication control module is directly connected to the electronic lock control terminal of the control interface; wherein
And after the communication control module enters a working state, a control signal is output to the electronic lock control end to control the electronic lock to be closed, and the state of the electronic lock is monitored based on the electronic lock control end.
3. The charging system according to claim 1, wherein the vehicle-mounted charger is directly connected with the electronic lock control end of the control interface; wherein
And after the vehicle-mounted charger enters a working state, outputting a control signal to the electronic lock control end to control the electronic lock to be closed, and monitoring the state of the electronic lock based on the electronic lock control end.
4. The charging system of claim 1, wherein the battery system further comprises a PP signal detection interface directly connected to a PP terminal of the control interface; wherein
In response to detecting the PP signal output by the PP terminal, the battery system outputs a control signal to enable the vehicle to be in a driving prohibition state.
5. The charging system of claim 1, wherein the first CP signal and the second CP signal have different duty cycles.
6. The charging system according to claim 1, wherein the vehicle-mounted charger enters a sleep state after detecting the first CP signal; and/or
And the communication control module enters a dormant state after detecting the second CP signal.
7. The charging system according to claim 1, wherein the battery system further includes a CAN bus interface, and the communication control module and the vehicle-mounted charger are directly connected to the CAN bus interface respectively, so as to obtain battery management information output by a battery management system of the battery system through the CAN bus respectively in a working state.
8. The charging system according to claim 7, wherein the communication control module converts the battery management information into a charging parameter CP signal output to the CP terminal in an operating state, so that the external charging post adjusts the voltage and current output to the first charging loop through the dc interface based on the charging parameter CP signal.
9. The charging system of claim 7, wherein the vehicle-mounted charger determines charging parameters according to the battery management information in an operating state to adjust the voltage and current output to the second charging loop through the dc output terminal.
10. The charging system of claim 9, wherein the on-board charger comprises a current conversion module that converts ac power input from the ac interface into dc power that is output to the battery system via the dc output, and the current conversion module adjusts the output of the dc output based on the charging parameter.
11. A charging system as claimed in any of claims 1 to 10, in which the outlet is a euro standard outlet which implements the european charging standard.
12. A vehicle characterized in that the vehicle comprises a charging system according to any one of claims 1-11.
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| CN202011312976.4A CN114537192A (en) | 2020-11-20 | 2020-11-20 | Vehicle and charging system thereof |
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| CN202011312976.4A CN114537192A (en) | 2020-11-20 | 2020-11-20 | Vehicle and charging system thereof |
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