CN115503532A - Charging control device and method applied to electric automobile - Google Patents
Charging control device and method applied to electric automobile Download PDFInfo
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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
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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
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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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application relates to a charging control device and method applied to an electric automobile. The device comprises: the device comprises an identification module, a charging module and a charging module, wherein the identification module is used for determining a pile end charging standard protocol of a charging pile when a current vehicle is connected with the charging pile, and the pile end charging standard protocol comprises a first type and a second type; the calling module is used for calling a corresponding vehicle end charging standard protocol from a charging standard protocol library prestored in the current vehicle according to the pile end charging standard protocol; and the detection module is used for detecting a connection signal between the current vehicle and the charging pile, and acquiring a power signal of the charging pile according to the called vehicle end charging standard protocol under the condition that the connection signal is detected. By adopting the method, the charging compatibility of the electric automobile can be ensured, and the phenomenon that the charging stability of the vehicle is lower due to lower stability of charging standard protocol conversion in the prior art can be improved.
Description
Technical Field
The application relates to the technical field of electric vehicle charging, in particular to a charging control device and method applied to an electric vehicle.
Background
With the rapid development of new energy vehicles, the charging technology of new energy vehicles also faces greater challenges. The charging communication standard protocol used by domestic vehicles is greatly different from that used by foreign vehicles, for example, the charging communication standard protocol used by the daily standard is CHAdemo-1.2, and the charging communication standard protocol used by domestic vehicles is GB27930. Therefore, the research and development of compatibility between the new energy automobile and the charging pile are more and more important.
At present, domestic and foreign charging Communication standard protocols are implanted into an Electric Vehicle Communication Controller (EVCC) of a new energy Vehicle, and a charging Communication standard protocol conversion module is added to realize automatic switching of the charging Communication standard protocols.
However, the cost of the whole vehicle is increased due to the addition of the conversion module, and the stability of the conversion of the charging communication standard protocol is low at present, so that the possibility that the vehicle cannot be charged exists, and the charging stability of the vehicle still needs to be improved.
Disclosure of Invention
Therefore, the charging control device and the charging control method applied to the electric automobile are provided, and the phenomenon that the charging stability of the automobile is low in the prior art is improved.
In a first aspect, there is provided a charge control device, the device comprising:
the device comprises an identification module, a charging module and a charging module, wherein the identification module is used for determining a pile end charging standard protocol of a charging pile when a current vehicle is connected with the charging pile, and the pile end charging standard protocol comprises a first type and a second type;
the calling module is used for calling a corresponding vehicle end charging standard protocol from a charging standard protocol library prestored in the current vehicle according to the pile end charging standard protocol;
the detection module is used for detecting a connection signal between the current vehicle and the charging pile, and acquiring a power supply signal of the charging pile according to a called vehicle end charging standard protocol under the condition that the connection signal is detected.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the detection module includes:
a first pin of the first photoelectric coupler is electrically connected with a first vehicle end interface of the current vehicle, a second pin and a third pin of the first photoelectric coupler are grounded, and a fourth pin of the first photoelectric coupler is used for acquiring a first voltage signal of the current vehicle;
the first vehicle-end interface is used for being electrically connected with a first pile-end interface of the charging pile, under the condition that a first response signal from the charging pile is received, a first pin of the first photoelectric coupler acquires a second voltage signal from the charging pile, so that a fourth pin of the first photoelectric coupler outputs a connection signal comprising a first detection signal, the first response signal is used for indicating a signal sent by the charging pile in response when the current vehicle determines that the pile-end charging standard protocol is of a first type, and the first detection signal is used for indicating a signal for indicating the readiness of the current vehicle.
With reference to the first aspect, in a second implementable manner of the first aspect, the detection module further includes:
a controller for outputting an excitation signal in a case where a connection signal including the first detection signal is detected;
a first resistor having one end for receiving the stimulus signal;
a base electrode of the first triode is electrically connected with the other end of the first resistor, an emitting electrode of the first triode is grounded, and a collecting electrode of the first triode is electrically connected with a second vehicle-end interface of the current vehicle;
the first triode comprises an NPN type triode, the second vehicle end interface is used for being electrically connected with the second pile end interface of the charging pile, the base electrode of the first triode obtains the excitation signal when the connection signal comprising the first detection signal is detected, and the collector electrode of the first triode obtains a third voltage signal from the charging pile so as to enable the first triode to be conducted and send a request to the charging pile.
With reference to the first aspect, in a third implementable manner of the first aspect, the detection module further includes:
a first pin of the second photoelectric coupler is electrically connected with the first vehicle end interface, a second pin of the second photoelectric coupler is electrically connected with a third vehicle end interface of the current vehicle, a third pin of the second photoelectric coupler is grounded, and a fourth pin of the second photoelectric coupler is used for acquiring the first voltage signal;
the third vehicle end interface is used for being electrically connected with the third pile end interface of the charging pile, and under the condition that a second response signal output by the charging pile is received, a second pin of a second photoelectric coupler is grounded through the third vehicle end interface, so that a fourth pin of the second photoelectric coupler generates a connection signal comprising a second detection signal, and the second detection signal is used for indicating a signal for indicating the readiness of the charging pile.
In a second aspect, a charging control method applied to an electric vehicle is provided, the method including:
when a current vehicle is connected with a charging pile, determining a pile end charging standard protocol of the charging pile, wherein the pile end charging standard protocol comprises a first type and a second type;
according to the pile end charging standard protocol, calling a corresponding vehicle end charging standard protocol from a charging standard protocol library prestored in the current vehicle;
and detecting a connection signal between the current vehicle and the charging pile, and acquiring a power signal of the charging pile according to a called vehicle end charging standard protocol under the condition that the connection signal is detected.
With reference to the second aspect, in a first possible implementation manner of the second aspect, the step of detecting a connection signal between the current vehicle and the charging pile includes:
detecting a connection signal comprising a first detection signal under the condition that a first response signal from the charging pile is received, wherein the first response signal is used for indicating a signal sent by the charging pile in response to the current vehicle determining that the pile tip charging standard protocol is of a first type, and the first detection signal is used for indicating a signal that the current vehicle is ready;
sending a request to the charging pile when a connection signal comprising a first detection signal is detected;
and under the condition of receiving a second response signal output by the charging pile, detecting a connection signal comprising a second detection signal, wherein the second detection signal is used for indicating a signal for indicating the readiness of the charging pile.
With reference to the second aspect, in a second possible implementation manner of the second aspect, the step of detecting a connection signal including a first detection signal includes:
under the condition that a first response signal from the charging pile is received, acquiring a first voltage signal of the current vehicle and a second voltage signal from the charging pile;
and converting the second voltage signal from an electrical signal to an optical signal and then to an electrical signal based on the first voltage signal to obtain a connection signal comprising a first detection signal.
With reference to the second aspect, in a third implementable manner of the second aspect, the step of sending a request to the charging pile includes:
acquiring an excitation signal and a third voltage signal from the charging pile under the condition that a connection signal comprising a first detection signal is detected;
and sending a request to the charging pile when the third voltage signal is greater than the excitation signal.
With reference to the second aspect, in a fourth implementable manner of the second aspect, the step of detecting the connection signal including the second detection signal includes:
under the condition of receiving a second response signal output by the charging pile, acquiring a grounding signal, the first voltage signal and the second voltage signal;
and converting the second voltage signal from an electrical signal to an optical signal and then to an electrical signal based on the grounding signal and the first voltage signal to obtain a connection signal comprising a second detection signal.
With reference to the second aspect, in a fifth implementable manner of the second aspect, the step of determining a tip charging standard protocol of the charging pile includes:
under the condition that the first partial pressure signal is identified, determining that a pile tip charging standard protocol of the charging pile is of a first type;
and under the condition that the second voltage division signal is identified, determining that the pile tip charging standard protocol of the charging pile is of a second type.
According to the charging control device and the charging control method applied to the electric automobile, when the current vehicle is connected with the charging pile, the pile end charging standard protocol of the charging pile is determined through the identification module, wherein the pile end charging standard protocol comprises a first type and a second type; calling a corresponding vehicle end charging standard protocol from a charging standard protocol library prestored in the current vehicle through a calling module according to the pile end charging standard protocol, specifically, if the identifying module determines that the pile end charging standard protocol is of a first type, the vehicle end charging standard protocol called by the calling module is of the first type, and if the identifying module determines that the pile end charging standard protocol is of a second type, the vehicle end charging standard protocol called by the calling module is of the second type; the method comprises the steps that a connection signal between the current vehicle and a charging post is detected through a detection module, and under the condition that the connection signal is detected, a power supply signal of the charging post is obtained according to a called vehicle end charging standard protocol, so that charging of the current vehicle is achieved. The vehicle-end charging standard protocols of two types are prestored in the vehicle, the corresponding vehicle-end charging standard protocols are called according to the specific types of the identified pile-end charging standard protocols, and under the condition that the connection signals are detected, the power signals of the charging piles are acquired, and the charging of the vehicle battery is completed.
Drawings
Fig. 1 is a block diagram showing a configuration of a charge control device applied to an electric vehicle in one embodiment;
fig. 2 is a circuit diagram of the connection between the charging control device and the day mark charging pile in one embodiment;
FIG. 3 is a circuit diagram of the connection of the charging control device to a national standard charging post according to one embodiment;
fig. 4 is a flowchart illustrating a charging control method applied to an electric vehicle according to another embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application rather than the number, shape and size of the components in actual implementation, and the type, quantity and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
The structures, the proportions, the sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used for limiting the conditions under which the present application can be implemented, so that the present invention has no technical essence, and any structural modification, changes of the proportion relation, or adjustment of the size, should fall within the scope of the technical disclosure of the present application without affecting the efficacy and the achievable purpose of the present application.
References in this specification to orientations or positional relationships such as "upper," "lower," "left," "right," "middle," "longitudinal," "lateral," "horizontal," "inner," "outer," "radial," "circumferential," and the like are based on the orientations or positional relationships illustrated in the drawings and are intended to simplify the description, rather than to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Because the standard protocol of charging that domestic vehicle used and the standard protocol of charging that foreign vehicle used have great difference, in order to improve the vehicle and fill the compatibility between the electric pile, the charging technology of prior art comes the car end standard protocol of charging of automatic switch-over vehicle according to the stake end standard protocol of charging of electric pile through increasing a standard protocol conversion module of charging. However, the conversion module not only increases the cost of the whole vehicle, but also has an unstable phenomenon in the conversion process of the charging standard protocol, thereby influencing the charging stability of the vehicle.
Therefore, the application provides a charging control device and a charging control method applied to an electric automobile, and the charging control device and the charging control method are applied to an environment that the electric automobile is charged through a charging pile. The charging control device comprises an identification module, a calling module and a detection module, and is characterized in that when a current vehicle is connected with a charging pile in a handshaking mode, the vehicle end charging standard protocols of two types are prestored in the vehicle, the specific types of the pile end charging standard protocols are identified by the identification module, the calling module calls the corresponding vehicle end charging standard protocols, and a power signal of the charging pile is acquired under the condition that a connection signal is detected by the detection module, so that the charging of a vehicle battery is completed, the charging compatibility of an electric automobile is ensured, and the phenomenon that the charging stability of the vehicle is low due to the fact that the stability of charging standard protocol conversion is low in the prior art is improved.
The charge control device of the present invention may be a Battery Management System (BMS) in the vehicle, or may be an independent device that communicates with the BMS, which is not limited in this application. Next, the charging control device applied to the electric vehicle of the present application will be described in detail.
In one embodiment, as shown in fig. 1, there is provided a charge control device applied to an electric vehicle, including:
the device comprises an identification module, wherein the identification module is used for determining a pile end charging standard protocol of the charging pile when the current vehicle is connected with the charging pile, and the pile end charging standard protocol comprises a first type and a second type.
It should be noted that the electric vehicle applied in the present application pre-stores two types of charging standard protocols, and for example, the first type of pile-end charging standard protocol may be a charging standard protocol (hereinafter referred to as "japanese standard protocol") used by a domestic vehicle, and the second type of pile-end charging standard protocol may be a charging standard protocol (hereinafter referred to as "national standard protocol") used by a domestic vehicle. When the current vehicle is in handshake connection with the charging pile, if a first partial pressure signal is identified, determining that a pile end charging standard protocol of the charging pile is of a first type, namely a day mark protocol; and if the second voltage division signal is identified, determining that the pile end charging standard protocol of the charging pile is of a second type, namely a national standard protocol.
It should be further noted that the electric vehicle applied in the present application has two charging interface groups, namely a first charging interface group and a second charging interface group, wherein in an application scenario in which the current charging pile is a day mark charging pile, the first charging interface group is used for being connected with a charging gun of the day mark charging pile in a handshaking manner, and the first charging interface group includes a first vehicle end interface, a second vehicle end interface, a third vehicle end interface and a fourth vehicle end interface; in the application scenario that the current charging pile is a national standard charging pile, the second charging interface group is used for being connected with a charging gun of the national standard charging pile in a handshaking mode, and the second charging interface group comprises a fifth vehicle end interface, a sixth vehicle end interface and a seventh vehicle end interface. The purpose of the first charging interface group and the second charging interface group and the connection relationship with the charging post will be described in detail below.
And the calling module is used for calling the corresponding vehicle end charging standard protocol from a charging standard protocol library prestored in the current vehicle according to the pile end charging standard protocol.
If the identification module determines that the pile end charging standard protocol is of a first type, the vehicle end charging standard protocol called by the calling module is also of the first type, namely a daily standard protocol, and if the identification module determines that the pile end charging standard protocol is of a second type, the vehicle end charging standard protocol called by the calling module is also of the second type, namely a national standard protocol.
The detection module is used for detecting a connection signal between the current vehicle and the charging pile, and acquiring a power supply signal of the charging pile according to a called vehicle end charging standard protocol under the condition that the connection signal is detected.
It should be noted that, if the identification module determines that the pile tip charging standard protocol of the current charging pile is the day mark protocol, a request is sent to the charging pile, a first response signal sent by the charging pile is received, and a connection signal including a first detection signal is detected based on an excitation effect of the first response signal, where the first detection signal is used for indicating a signal indicating that the current vehicle is ready; generating a connection signal comprising a second detection signal under the condition that the first detection signal is detected, and sending a request to the charging pile through the second detection signal, wherein the second detection signal is used for indicating a signal for allowing the charging pile to charge the current vehicle; and under the condition of receiving a second response signal sent by the charging pile responding to the second detection signal, detecting a connection signal comprising a third detection signal, wherein the third detection signal is used for indicating the readiness of the charging pile. If the first detection signal, the second detection signal and the third detection signal are detected, the current vehicle can be considered to be charged to the battery through the current charging pile, so that a power supply signal from the current charging pile is obtained, and the charging of the current vehicle is completed. Illustratively, the communication between the current vehicle and the current charging pile CAN be realized by adopting a CAN network with 500 Kbaud rate, and the daily standard protocol CAN adopt CHAdemo-1.2.
And if the identification module determines that the pile end charging standard protocol of the current charging pile is the national standard protocol, sending a request to the charging pile and receiving a third response signal sent by the charging pile. And under the condition of receiving the third response signal, the current vehicle is considered to be capable of charging the battery through the current charging pile, so that a power supply signal from the current charging pile is obtained, and the charging of the current vehicle is completed. Illustratively, a CAN network with a rate of 250 baud CAN be used for realizing communication between the current vehicle and the current charging pile, and a national standard protocol of the CAN network CAN adopt GB27930.
Above-mentioned be applied to electric automobile's charge control device, through prestore the car end standard protocol of charging of two kinds of types of day standard and national standard in the vehicle, the concrete type of rethread identification module discernment stake end standard protocol of charging, call the module and call the car end standard protocol of charging that corresponds, and under the condition that the connection signal is detected by the detection module, acquire the power signal who fills electric pile, accomplish the charging to vehicle battery, electric automobile charging's compatibility has been guaranteed, it is lower because of the stability of charging standard protocol conversion among the prior art to have improved, lead to the lower phenomenon of vehicle charging stability.
As a specific implementation manner of the foregoing embodiment, as shown in fig. 2, the detection module includes:
a first pin of the first photoelectric coupler OC1 is electrically connected with a first vehicle end interface of the current vehicle, a second pin and a third pin of the first photoelectric coupler OC1 are grounded to GND, and a fourth pin of the first photoelectric coupler OC1 is used for acquiring a first voltage signal of the current vehicle;
a controller for outputting an excitation signal in a case where a connection signal including the first detection signal is detected;
a first resistor R1, one end of the first resistor R1 being used for receiving the excitation signal;
a base electrode of the first triode Q1 is electrically connected with the other end of the first resistor R1, an emitting electrode of the first triode Q1 is grounded GND, and a collecting electrode of the first triode Q1 is electrically connected with a second vehicle-end interface of the current vehicle;
a first pin of the second photoelectric coupler OC2 is electrically connected with the first vehicle end interface, a second pin of the second photoelectric coupler OC2 is electrically connected with a third vehicle end interface of the current vehicle, a third pin of the second photoelectric coupler OC2 is grounded GND, and a fourth pin of the second photoelectric coupler OC2 is used for acquiring the first voltage signal;
the first vehicle-end interface is used for being electrically connected with a first pile-end interface of the charging pile, and under the condition that a first response signal from the charging pile is received, a first pin of the first photoelectric coupler OC1 acquires a second voltage signal from the charging pile, so that a fourth pin of the first photoelectric coupler OC1 outputs a connection signal comprising the first detection signal, the first response signal is used for indicating a signal sent by the charging pile in response when the current vehicle determines that the pile-end charging standard protocol is of a first type, and the first detection signal is used for indicating a signal for indicating that the current vehicle is ready;
the first triode Q1 comprises an NPN type triode, the second vehicle terminal interface is used for being electrically connected with the second pile terminal interface of the charging pile, under the condition that a connection signal comprising the first detection signal is detected, the base electrode of the first triode Q1 obtains the excitation signal, and the collector electrode of the first triode Q1 obtains a third voltage signal from the charging pile, so that the first triode Q1 is conducted, and a request is sent to the charging pile;
the third vehicle end interface is used for electrically connecting with a third pile end interface of the charging pile, and under the condition that a second response signal output by the charging pile is received, a second pin of the second photoelectric coupler OC2 is grounded through the third vehicle end interface GND, so that a fourth pin of the second photoelectric coupler OC2 generates a connection signal comprising a second detection signal, and the second detection signal is used for indicating a ready signal of the charging pile.
In specific implementation, in order to improve the stability of the circuit, the detection module further includes at least one resistor for limiting current, as shown in fig. 2, including a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7. One end of the second resistor R2 is electrically connected to a fourth vehicle-end interface of the current vehicle, and the other end of the second resistor R2 is used for acquiring a fourth voltage signal of the current vehicle; one end of the third resistor R3 is electrically connected with a first vehicle end interface of the current vehicle, and the other end of the third resistor R3 is electrically connected with a first pin of the first photoelectric coupler OC 1; one end of the fourth resistor R4 is electrically connected to a fourth pin of the first photocoupler OC1, and the other end of the fourth resistor R4 is used for acquiring the first voltage signal; one end of the fifth resistor R5 is electrically connected to the fourth pin of the second photocoupler OC2, and the other end of the fifth resistor R5 is used for acquiring the first voltage signal; one end of the sixth resistor R6 is electrically connected to the third vehicle end interface of the current vehicle, and the other end of the sixth resistor R6 is electrically connected to the second pin of the second photocoupler OC 2; one end of the seventh resistor R7 is electrically connected to the second vehicle-end interface of the present vehicle, and the other end of the seventh resistor R7 is electrically connected to the collector of the first triode Q1.
For convenience of explanation, fig. 2 also illustrates a part of circuits inside the day mark charging pile, including: a first relay K1, a second relay K2, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, and a third photocoupler OC3. The signal end of the first relay K1 is used for acquiring a second voltage signal of the day mark charging pile, and the execution end of the first relay K1 is electrically connected with a first pile end interface of the day mark charging pile; the signal end of the second relay K2 is grounded GND, and the execution end of the second relay K2 is electrically connected with the third pile end interface of the daily standard charging pile; one end of the eighth resistor R8 is grounded GND, and the other end of the eighth resistor R8 is electrically connected with a fourth pile end interface of the day mark charging pile; one end of the ninth resistor R9 is electrically connected with the second pile end interface of the solar standard charging pile; a first pin of the third photoelectric coupler OC3 is used for acquiring the second voltage signal, a second pin of the third photoelectric coupler OC3 is electrically connected with the other end of the ninth resistor R9, and a third pin of the photoelectric coupler is grounded GND; one end of the tenth resistor R10 is electrically connected to the fourth pin of the photoelectric coupler, and the other end of the tenth resistor R10 is used for acquiring a fifth voltage signal of the solar standard charging pile.
Fig. 2 is a partial circuit diagram of the connection between the current vehicle and the day mark charging post. When the current vehicle is in handshaking connection with the day mark charging pile, a first vehicle end interface of the current vehicle is electrically connected with a first pile end interface of the day mark charging pile; the second vehicle end interface of the current vehicle is electrically connected with the second pile end interface of the daily standard charging pile; the third vehicle end interface of the current vehicle is electrically connected with the third pile end interface of the daily mark charging pile; and a fourth vehicle end interface of the current vehicle is electrically connected with a fourth pile end interface of the daily mark charging pile. For convenience of description, in fig. 2, J1 represents a connection point between a first vehicle-end interface of the current vehicle and a first pile-end interface of the day mark charging pile, J2 represents a connection point between a second vehicle-end interface of the current vehicle and a second pile-end interface of the day mark charging pile, J3 represents a connection point between a third vehicle-end interface of the current vehicle and a third pile-end interface of the day mark charging pile, and J4 represents a connection point between a fourth vehicle-end interface of the current vehicle and a fourth pile-end interface of the day mark charging pile.
With reference to the circuit diagram shown in fig. 2, the working principle of the charging control device of the present application in the application scenario where the current vehicle is charged through the japanese-mark charging pile is described. Firstly, when the current vehicle is connected with the daily standard charging pile in a handshaking manner, the identification module identifies a first voltage division signal of a connection point J4, namely, a voltage division of a fourth voltage signal flowing through the second resistor R2 to the eighth resistor R8, determines that the current charging pile is the daily standard charging pile, and then sends a request to the daily standard charging pile. And then, the vehicle end charging standard protocol of the day label is called from a prestored charging standard protocol library through a calling module. Meanwhile, the solar-standard charging pile outputs a first response signal, that is, the actuating end of the first relay K1 is closed, at this time, the first pin of the first photoelectric coupler OC1 acquires a second voltage signal from the solar-standard charging pile, the fourth pin of the first photoelectric coupler OC1 also acquires a first voltage signal divided by the fourth resistor R4, so that the second voltage signal is divided by the third resistor R3, then the first photoelectric coupler OC1 converts an electric signal into an optical signal and then into an electric signal, and finally, a connection signal including a first detection signal is output from the fourth pin of the first photoelectric coupler OC1, that is, a point a in fig. 2.
After the first detection signal is detected, the controller outputs an excitation signal, and the excitation signal is divided by the first resistor R1 and flows to the base electrode of the first triode Q1; the second voltage signal is subjected to voltage division through a phototransistor of the third photoelectric coupler OC3, the ninth resistor R9 and the seventh resistor R7 to obtain a third voltage signal, and a collector of the first triode Q1 acquires the third voltage signal through a J2 connection point; due to the fact that the emitting electrode of the first triode Q1 is grounded GND, when the collector voltage of the first triode Q1 is larger than the base voltage, namely the third voltage signal is larger than the excitation signal, the conduction condition of an NPN type triode is met, and the first triode Q1 is conducted; meanwhile, a fourth pin of the third photoelectric coupler OC3 acquires the fifth voltage signal, the second voltage signal is converted from an electrical signal to an optical signal and then to an electrical signal through the third photoelectric coupler OC3, and a second response signal is output from a fourth pin, that is, a point B, of the third photoelectric coupler OC3.
The second relay K2 closes the execution end under the excitation action of the second response signal, and at the moment, a second pin of the second photoelectric coupler OC2 is grounded GND through a J3 connection point; meanwhile, a first pin of the second photoelectric coupler OC2 acquires the second voltage signal through a J1 connection point, and a fourth pin of the second photoelectric coupler OC2 acquires the first voltage signal divided by the fifth resistor R5; the second voltage signal is converted from an electrical signal to an optical signal and then to an electrical signal through the second photoelectric coupler OC2, and a connection signal including a second detection signal is output from a fourth pin, i.e., a point C, of the second photoelectric coupler OC 2.
The first detection signal is used for indicating a signal that the current vehicle is ready, and the second detection signal is used for indicating a signal that the charging pile is ready. Therefore, in a case where both the first detection signal and the second detection signal are detected, it is determined that the battery of the current vehicle can be charged by the day mark charging pile, and at this time, the day mark charging pile starts charging the current vehicle.
In another embodiment, as shown in fig. 3, the present vehicle charges the battery through a national standard charging post. In the present embodiment, the charge control device includes an eleventh resistor R11 and a twelfth resistor R12, where one end of the eleventh resistor R11 is used to obtain the first voltage signal of the current vehicle, and the other end of the eleventh resistor R11 is electrically connected to the fifth vehicle-end interface of the current vehicle; one end of the twelfth resistor R12 is electrically connected to the sixth vehicle end interface of the current vehicle, and the other end of the twelfth resistor R12 is electrically connected to the seventh vehicle end interface of the current vehicle.
For convenience of explanation, fig. 3 also illustrates a part of circuits inside the national standard charging pile, including: a thirteenth resistor R13, a third relay K3, a fourteenth resistor R14 and a fifteenth resistor R15, wherein one end of the thirteenth resistor R13 is grounded GND and is electrically connected with the seventh pile end interface of the national standard charging pile, and the other end of the thirteenth resistor R13 is electrically connected with the fifth pile end interface of the national standard charging pile; the execution end of the third relay K3 is grounded GND and is electrically connected with a seventh pile end interface of the national standard charging pile; one end of the fourteenth resistor R14 is electrically connected with the signal end of the third relay K3, and the other end of the fourteenth resistor R14 is electrically connected with a sixth pile end interface of the national standard charging pile; one end of the fifteenth resistor R15 is used for acquiring a sixth voltage signal of the national standard charging pile, and the other end of the fifteenth resistor R15 is electrically connected with a sixth pile end interface of the national standard charging pile.
It should be noted that fig. 3 is a partial circuit diagram of the connection between the current vehicle and the national standard charging pile. When the current vehicle is in handshaking connection with the national standard charging pile, the fifth vehicle-end interface of the current vehicle is electrically connected with the fifth pile-end interface of the national standard charging pile; the sixth vehicle end interface of the current vehicle is electrically connected with the sixth pile end interface of the national standard charging pile; and the seventh vehicle end interface of the current vehicle is electrically connected with the seventh pile end interface of the national standard charging pile. For convenience of description, in fig. 3, J5 denotes a connection point of a fifth vehicle-end interface of the current vehicle and a fifth pile-end interface of the national standard charging pile, J6 denotes a connection point of a sixth vehicle-end interface of the current vehicle and a sixth pile-end interface of the national standard charging pile, and J7 denotes a connection point of a seventh vehicle-end interface of the current vehicle and a seventh pile-end interface of the national standard charging pile.
With reference to the circuit diagram shown in fig. 3, the working principle of the charging control device of the present application in the application scenario where the current vehicle is charged through the national standard charging pile is described. When the current vehicle and the national standard charging pile are connected in a handshaking mode, the current vehicle and the national standard charging pile can detect whether charging connection exists. Specifically, a point D of the charging control device acquires a second voltage division signal through a J5 connection point, that is, the first voltage signal flows through the eleventh resistor R11 to the voltage division of the thirteenth resistor R13, and determines that the current charging pile is a national standard charging pile, and then sends a request to the national standard charging pile; then, calling a national standard vehicle end charging standard protocol from a pre-stored charging standard protocol library; the national standard charging pile responds by closing the execution end of the third relay K3, and at the moment, a point E of the national standard charging pile acquires a signal obtained by dividing the sixth voltage signal by the fifteenth resistor R15. And under the condition that the signals are detected at the points D and E respectively, the battery of the current vehicle can be charged through the national standard charging pile, and at the moment, the national standard charging pile starts to charge the current vehicle.
In summary, the charging control device of the application is applied to an electric vehicle, and the charging piles of different charging protocols are provided with resistors with different resistance values in a charging gun, so that the pile end charging standard protocol type used by the charging pile can be automatically identified by detecting the voltage division signal of the charging pile, and then the corresponding vehicle end charging standard protocol is called; and detecting a connection signal with the charging pile, and under the condition that the connection signal is normal, starting to acquire a power signal of the charging pile according to a called vehicle end charging standard protocol to finish charging the vehicle battery. Therefore, the compatibility between the electric automobile and the charging pile is guaranteed, the increase of the cost of the whole automobile caused by the protocol conversion module in the prior art is improved, and the phenomenon that the charging stability of the automobile is low due to the fact that the protocol conversion stability is low is avoided.
In another embodiment, as shown in fig. 4, a charging control method applied to an electric vehicle is provided, including:
s101: when a current vehicle is connected with a charging pile, determining a pile end charging standard protocol of the charging pile, wherein the pile end charging standard protocol comprises a first type and a second type;
s102: calling a corresponding vehicle end charging standard protocol from a charging standard protocol library prestored in the current vehicle according to the pile end charging standard protocol;
s103: and detecting a connection signal between the current vehicle and the charging pile, and acquiring a power supply signal of the charging pile according to a called vehicle end charging standard protocol under the condition that the connection signal is detected.
Specifically, the step of detecting the connection signal between the current vehicle and the charging pile includes:
detecting a connection signal including a first detection signal in the case of receiving a first response signal from the charging pile, wherein the first response signal is used for indicating a signal sent by the charging pile in response to the current vehicle determining that the pile tip charging standard protocol is of a first type, and the first detection signal is used for indicating a signal that the current vehicle is ready;
sending a request to the charging pile when a connection signal comprising a first detection signal is detected;
and under the condition of receiving a second response signal output by the charging pile, detecting a connection signal comprising a second detection signal, wherein the second detection signal is used for indicating a signal for indicating the readiness of the charging pile.
Specifically, the step of detecting a connection signal including a first detection signal includes:
under the condition that a first response signal from the charging pile is received, acquiring a first voltage signal of the current vehicle and a second voltage signal from the charging pile;
and converting the second voltage signal from an electrical signal to an optical signal and then to an electrical signal based on the first voltage signal to obtain a connection signal comprising a first detection signal.
Specifically, the step of sending a request to the charging pile includes:
acquiring an excitation signal and a third voltage signal from the charging pile under the condition that a connection signal comprising a first detection signal is detected;
and sending a request to the charging pile when the third voltage signal is greater than the excitation signal.
Specifically, the step of detecting the connection signal including the second detection signal includes:
under the condition of receiving a second response signal output by the charging pile, acquiring a grounding signal, the first voltage signal and the second voltage signal;
and converting the second voltage signal from an electrical signal to an optical signal and then to an electrical signal based on the grounding signal and the first voltage signal to obtain a connection signal comprising a second detection signal.
Specifically, the step of determining the pile tip charging standard protocol of the charging pile includes:
under the condition that the first partial pressure signal is identified, determining that a pile tip charging standard protocol of the charging pile is of a first type;
and under the condition that the second voltage division signal is identified, determining that the pile tip charging standard protocol of the charging pile is of a second type.
It should be understood that, although the steps in the flowchart of fig. 4 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 4 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
For specific limitations of the charging control method applied to the electric vehicle, reference may be made to the above limitations of the charging control device applied to the electric vehicle, and details thereof are not repeated herein. The execution main body of the charging control method applied to the electric vehicle can be the charging control device applied to the electric vehicle, and all or part of each module in the charging control device applied to the electric vehicle can be realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), rambus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A charge control device, characterized by comprising:
the device comprises an identification module, a charging module and a charging module, wherein the identification module is used for determining a pile end charging standard protocol of a charging pile when a current vehicle is connected with the charging pile, and the pile end charging standard protocol comprises a first type and a second type;
the calling module is used for calling a corresponding vehicle end charging standard protocol from a charging standard protocol library prestored in the current vehicle according to the pile end charging standard protocol;
the detection module is used for detecting a connection signal between the current vehicle and the charging pile, and acquiring a power supply signal of the charging pile according to a called vehicle end charging standard protocol under the condition that the connection signal is detected.
2. The charging control device according to claim 1, wherein the detection module includes:
a first pin of the first photoelectric coupler is electrically connected with a first vehicle end interface of the current vehicle, a second pin and a third pin of the first photoelectric coupler are grounded, and a fourth pin of the first photoelectric coupler is used for acquiring a first voltage signal of the current vehicle;
the first vehicle-end interface is used for being electrically connected with a first pile-end interface of the charging pile, under the condition that a first response signal from the charging pile is received, a first pin of the first photoelectric coupler acquires a second voltage signal from the charging pile, so that a fourth pin of the first photoelectric coupler outputs a connection signal comprising a first detection signal, the first response signal is used for indicating a signal sent by the charging pile in response when the current vehicle determines that the pile-end charging standard protocol is of a first type, and the first detection signal is used for indicating a signal for indicating the readiness of the current vehicle.
3. The charging control device of claim 2, wherein the detection module further comprises:
a controller for outputting an excitation signal in a case where a connection signal including the first detection signal is detected;
a first resistor having one end for receiving the stimulus signal;
a base electrode of the first triode is electrically connected with the other end of the first resistor, an emitting electrode of the first triode is grounded, and a collecting electrode of the first triode is electrically connected with a second vehicle-end interface of the current vehicle;
the first triode comprises an NPN type triode, the second vehicle terminal interface is used for being electrically connected with the second pile terminal interface of the charging pile, the base electrode of the first triode acquires the excitation signal under the condition that the connection signal comprising the first detection signal is detected, and the collector electrode of the first triode acquires a third voltage signal from the charging pile so as to conduct the first triode and send a request to the charging pile.
4. The charge control device according to claim 3, wherein the detection module further comprises:
a first pin of the second photoelectric coupler is electrically connected with the first vehicle end interface, a second pin of the second photoelectric coupler is electrically connected with a third vehicle end interface of the current vehicle, a third pin of the second photoelectric coupler is grounded, and a fourth pin of the second photoelectric coupler is used for acquiring the first voltage signal;
the third vehicle end interface is used for being electrically connected with the third pile end interface of the charging pile, and under the condition that a second response signal output by the charging pile is received, a second pin of a second photoelectric coupler is grounded through the third vehicle end interface, so that a fourth pin of the second photoelectric coupler generates a connection signal comprising a second detection signal, and the second detection signal is used for indicating a signal for indicating the readiness of the charging pile.
5. A charge control method, comprising:
when a current vehicle is connected with a charging pile, determining a pile end charging standard protocol of the charging pile, wherein the pile end charging standard protocol comprises a first type and a second type;
according to the pile end charging standard protocol, calling a corresponding vehicle end charging standard protocol from a charging standard protocol library prestored in the current vehicle;
and detecting a connection signal between the current vehicle and the charging pile, and acquiring a power signal of the charging pile according to a called vehicle end charging standard protocol under the condition that the connection signal is detected.
6. The charge control method according to claim 5, wherein the step of detecting the connection signal between the current vehicle and the charging pile includes:
detecting a connection signal including a first detection signal in the case of receiving a first response signal from the charging pile, wherein the first response signal is used for indicating a signal sent by the charging pile in response to the current vehicle determining that the pile tip charging standard protocol is of a first type, and the first detection signal is used for indicating a signal that the current vehicle is ready;
sending a request to the charging pile when a connection signal comprising a first detection signal is detected;
and under the condition of receiving a second response signal output by the charging pile, detecting a connection signal comprising a second detection signal, wherein the second detection signal is used for indicating a signal for indicating the readiness of the charging pile.
7. The charge control method according to claim 6, wherein the step of detecting the connection signal including the first detection signal includes:
under the condition that a first response signal from the charging pile is received, acquiring a first voltage signal of the current vehicle and a second voltage signal from the charging pile;
and converting the second voltage signal from an electrical signal to an optical signal and then to an electrical signal based on the first voltage signal to obtain a connection signal comprising a first detection signal.
8. The charge control method according to claim 6, wherein the step of issuing a request to the charging pile includes:
acquiring an excitation signal and a third voltage signal from the charging pile under the condition that a connection signal comprising a first detection signal is detected;
and sending a request to the charging pile when the third voltage signal is greater than the excitation signal.
9. The charge control method according to claim 6, wherein the step of detecting the connection signal including the second detection signal includes:
under the condition of receiving a second response signal output by the charging pile, acquiring a grounding signal, the first voltage signal and the second voltage signal;
and converting the electrical signal into the optical signal and then into the electrical signal for the second voltage signal based on the grounding signal and the first voltage signal to obtain a connection signal comprising a second detection signal.
10. The charging control method according to claim 5, wherein the step of determining the tip charging standard protocol of the charging post comprises:
under the condition that the first partial pressure signal is identified, determining that a pile tip charging standard protocol of the charging pile is of a first type;
and under the condition that the second voltage division signal is identified, determining that the pile tip charging standard protocol of the charging pile is of a second type.
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