CN114771331A - National standard and American standard charging communication protocol conversion control system and method - Google Patents
National standard and American standard charging communication protocol conversion control system and method Download PDFInfo
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- CN114771331A CN114771331A CN202210354596.XA CN202210354596A CN114771331A CN 114771331 A CN114771331 A CN 114771331A CN 202210354596 A CN202210354596 A CN 202210354596A CN 114771331 A CN114771331 A CN 114771331A
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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
- B60L53/66—Data transfer between charging stations and vehicles
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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
- B60L53/30—Constructional details of charging stations
- B60L53/305—Communication interfaces
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a national standard and American standard charging communication protocol conversion control system and a method, comprising an American standard charging pile EVSE, an electric vehicle communication controller EVCC, a charging conversion module CTU and a power battery pack assembly; the American standard charging pile EVSE performs quick charging data interaction with an electric vehicle communication controller EVCC through PLC power carrier communication; charging data are transmitted between the EVCC and the charging conversion module CTU through a American standard charging communication protocol, and the charging conversion module CTU and the power battery pack assembly adopt a national standard charging communication protocol to transmit the charging data. The national standard and American standard charging communication protocol conversion control system realizes that a national standard power battery pack assembly replaces an American standard power battery pack assembly on an American standard electric vehicle, can perform quick charging on an American standard charging pile, and has the advantages of strong feasibility, high compatibility and lower cost.
Description
Technical Field
The invention belongs to the technical field of conversion control of a quick charging protocol of a pure electric vehicle, and particularly relates to a national standard and American standard charging communication protocol conversion control system and method.
Background
With the vigorous development of electric vehicles, more and more countries use electric vehicles as new kinetic energy for driving the development of the automobile industry. The quick charging technology greatly shortens the charging time of the electric automobile, so that the vehicle is provided with the quick charging technology, and the electric automobile is rapidly popularized and promoted.
The fast charge communication protocol commonly adopted at home is GB/T27930, and the American standard fast charge communication protocol ISO15118 is commonly adopted at abroad. Due to the fact that different rapid charging standards are adopted at home and abroad, the power battery pack assembly with the national standard charging system cannot realize charging control with the rapid charging pile with the foreign standard, and therefore rapid development of the electric automobile industry is limited.
Disclosure of Invention
In view of this, the present invention provides a national standard and american standard charging communication protocol conversion control system, so as to achieve compatibility between two different charging communication protocols of the national standard and the american standard, and achieve rapid charging of an electric vehicle having a national standard power battery pack assembly on an american standard rapid charging pile.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a national standard and American standard charging communication protocol conversion control system comprises an American standard charging pile EVSE, an electric vehicle communication controller EVCC, a charging conversion module CTU and a power battery pack assembly;
the American standard charging pile EVSE performs quick charging data interaction with an electric vehicle communication controller EVCC through PLC power carrier communication; charging data are transmitted between the EVCC and the charging conversion module CTU through a American standard charging communication protocol, and the charging conversion module CTU and the power battery pack assembly adopt a national standard charging communication protocol to transmit the charging data.
Further, the power battery pack assembly comprises a battery management system BMS, a quick charge relay and a power battery pack; the battery management system BMS is used for controlling the quick charge relay to be disconnected and closed and acquiring the state parameters of the power battery pack, the battery management system BMS is connected with the charge conversion module CTU, the output end of the quick charge relay is connected with the power battery pack, and the input end of the quick charge relay is connected with the American standard charging pile EVSE.
Furthermore, the charging conversion module CTU comprises a charging signal acquisition unit, a resistor R1, a resistor R2 and a relay K, wherein the resistor R1, the relay K and the resistor R2 are connected in series, and the charging signal acquisition unit is connected with the relay K.
Further, the charging conversion module CTU is used for being compatible with two different charging communication protocols of national standard and American standard.
Further, the communication between the battery management system BMS and the charging conversion module CTU adopts a national standard charging communication protocol as follows: GB/T27930 standard communication protocol, the baud rate is 250 kbit/s.
Furthermore, a American standard charging communication protocol adopted by the communication between the electric vehicle communication controller EVCC and the charging conversion module CTU is as follows: ISO15118 standard, Baud rate 500 kbit/s.
A national standard and American standard charging communication protocol conversion control method comprises the following steps:
s1, inserting a quick charging gun into a quick charging interface of the American standard charging pile EVCC, and performing charging authentication and charging parameter interaction on the American standard charging pile EVCC and an electric vehicle communication controller EVSE;
s2, the charging conversion module CTU receives a charging signal from the American standard charging pile EVCC, the charging conversion module CTU controls a relay K inside the charging conversion module to be closed, so that a resistor R1 and a resistor R2 are kept in series connection, and the battery management system BMS recognizes a gun inserting signal;
s3, the American standard charging pile EVCC and the battery management system BMS respectively send charging handshake signals to a charging conversion module CTU, the charging conversion module CTU sends handshake response messages to the battery management system BMS according to the national standard requirements, and meanwhile, the charging conversion module CTU also sends handshake response messages to the American standard charging pile EVCC according to the American standard requirements;
s4, after the handshaking is successful, the battery management system BMS sends charging parameter information to the charging conversion module CTU in real time, and the charging conversion module CTU forwards all the charging parameter information to the American standard charging pile EVCC according to American standard requirements;
s5, the charging conversion module CTU monitors the charging parameter information of the battery management system BMS and the American standard charging pile EVCC in real time in the charging process, and executes fault processing in time after recognizing that the charging information is abnormal;
and S6, after the power battery pack is fully charged or the charging is stopped artificially, the charging conversion module CTU executes a charging ending action according to a charging stopping signal sent by the American standard charging pile EVCC and the battery management system BMS.
Further, the charging parameters include: charging voltage, charging current, charging mode, charging gun temperature and power battery pack monomer information.
Compared with the prior art, the system and the method for controlling the conversion of the national standard charging communication protocol and the American standard charging communication protocol have the following beneficial effects:
(1) the national standard and American standard charging communication protocol conversion control system and method provided by the invention realize that a national standard power battery pack assembly replaces an American standard power battery pack assembly on an American standard electric vehicle, can perform quick charging on an American standard charging pile, and have the advantages of strong feasibility, high compatibility and lower cost.
(2) According to the national standard and American standard charging communication protocol conversion control system and method, the national standard power battery pack assembly can be installed on the American standard vehicle under the condition that the basic structure of the original vehicle is not changed, the rapid charging is realized on the American standard charging pile, and the compatibility of the national standard and American standard charging protocols is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:
fig. 1 is a schematic structural diagram of a charging communication conversion control system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an interface of a charging communication conversion control module according to an embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, a national standard and american standard charging communication protocol conversion control system includes an american standard charging pile EVSE, an electric vehicle communication controller EVCC, a charging conversion module CTU, and a power battery pack assembly.
The power battery pack assembly comprises a power management system BMS, a quick charge relay and a power battery pack, and the power assembly adopts a national standard quick charge communication protocol GB/T27930.
And the American standard charging pile EVSE performs quick charging data interaction with an electric vehicle communication controller EVCC through PLC power carrier communication. In the charging process, high-voltage direct current is provided for the power battery pack;
the EVCC and the charging conversion module CTU of the electric automobile communication controller adopt a CAN communication mode, the Baud rate is 500kbit/s, and the quick charging communication protocol adopts ISO15118 standard.
The charging conversion module CTU and the electric vehicle communication controller EVCC adopt a American standard charging communication protocol, the charging conversion module CTU and the power management system BMS adopt a national standard charging communication protocol, and the electric vehicle communication controller EVCC and the power management system BMS realize the receiving and sending of charging data through the charging conversion module CTU;
the power management system BMS and the charging conversion module CTU adopt a CAN communication mode, the baud rate is 250kbit/s, and the fast charging communication protocol adopts the GB/T27930 standard.
As shown in fig. 2, an interface schematic diagram of a national standard and american standard charging communication protocol conversion control module is that a charging information acquisition unit, a resistor R1, a resistor R2, and a relay K are designed inside a newly added charging conversion control module CTU for a power management system BMS compatible with the national standard.
When the quick charging gun is inserted into a charging interface of a vehicle, the EVCC sends a DC quick charging gun inserting signal to the CTU, after the CTU receives the quick charging signal from the EVCC, the charging signal acquisition unit controls an internal relay K to be closed, so that a resistor R1 and a resistor R2 are kept connected in series, a voltage value of a detection point 2 acquired by a power management system BMS is 6V, and the BMS recognizes that the quick charging gun is inserted and meets the design requirement of a national standard charging interface;
the resistance values of the resistor R1 and the resistor R2 are the same and are 1030 omega;
the national standard charging communication protocol and the american standard charging communication protocol have two different charging processes because of different standards, for example, the national standard charging process is as follows: the method comprises six stages of physical connection completion, low-voltage auxiliary electrification, a charging handshake stage, a charging parameter configuration stage, a charging ending stage and the like; the American standard charging process comprises an IDLE stage IDLE, a high-level communication stage Setup of high Layer communication, a charging Parameter matching stage Charge Parameter Discovery, a line inspection stage Cable Check, a pre-charging stage PreCharge, a Power output stage Power Delivery, a high-voltage relay adhesion detection stage WeldingDetection and a charging session end Finshed.
The charging conversion control module is integrated according to two charging flows, and can be compatible with two charging flows of national standard and American standard at the same time after integration, and the specific quick charging flow is as follows:
in the idle stage, at the moment, the quick charging gun is not inserted, and the charging is not started;
in addition, after the CTU receives a charging signal from the EVCC, the CTU controls a relay K in the CTU to be closed, so that a resistor R1 and a resistor R2 are kept connected in series, at the moment, the voltage value of a detection point 2 acquired by the BMS is changed from 12V to 6V, and the BMS identifies a gun inserting signal;
in the handshaking stage, the EVCC and the BMS respectively send charging handshaking signals to the CTU, the CTU sends handshaking response messages to the BMS according to the national standard requirements, and meanwhile, the CTU also sends the handshaking response messages to the EVCC according to the American standard requirements;
in the charging stage, after the handshaking is successful, the whole vehicle enters the charging stage, the BMS sends charging parameter information such as charging voltage, charging current, charging mode, charging gun temperature, power battery pack monomer information and the like to the CTU in real time, the CTU forwards all the charging parameter information to the EVCC according to American standard requirements, and in the stage, the CTU monitors charging data from the BMS and the EVCC in real time, and executes fault processing logic in time after recognizing that the charging data are abnormal;
and in the charging ending stage, when the power battery pack is fully charged or the charging is stopped artificially, the TCU executes a charging ending action according to a charging stopping signal sent by the EVCC and the BMS.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (8)
1. A national standard and American standard charging communication protocol conversion control system is characterized in that: the electric vehicle charging system comprises a American standard charging pile EVSE, an electric vehicle communication controller EVCC, a charging conversion module CTU and a power battery pack assembly;
the American standard charging pile EVSE performs quick charging data interaction with an electric vehicle communication controller EVCC through PLC power carrier communication; charging data are transmitted between the EVCC and the charging conversion module CTU through a American standard charging communication protocol, and the charging conversion module CTU and the power battery pack assembly adopt a national standard charging communication protocol to transmit the charging data.
2. The system according to claim 1, wherein the charging communication protocol conversion control system comprises: the power battery pack assembly comprises a battery management system BMS, a quick charging relay and a power battery pack; the battery management system BMS is used for controlling the quick charge relay to be disconnected and closed and acquiring the state parameters of the power battery pack, the battery management system BMS is connected with the charge conversion module CTU, the output end of the quick charge relay is connected with the power battery pack, and the input end of the quick charge relay is connected with the American standard charging pile EVSE.
3. The system according to claim 1, wherein the charging communication protocol conversion control system comprises: the charging conversion module CTU comprises a charging signal acquisition unit, a resistor R1, a resistor R2 and a relay K, wherein the resistor R1, the relay K and the resistor R2 are connected in series, and the charging signal acquisition unit is connected with the relay K.
4. The system according to claim 3, wherein the charging communication protocol conversion control system comprises: the charging conversion module CTU is used for being compatible with two different charging communication protocols of national standard and American standard.
5. The system of claim 1, wherein the charging communication protocol conversion control system comprises: the communication between the battery management system BMS and the charging conversion module CTU adopts the national standard charging communication protocol as follows: GB/T27930 standard communication protocol, the baud rate is 250 kbit/s.
6. The system according to claim 1, wherein the charging communication protocol conversion control system comprises: the American standard charging communication protocol adopted for communication between the electric vehicle communication controller EVCC and the charging conversion module CTU is as follows: the ISO15118 standard, the baud rate is 500 kbit/s.
7. A control method applied to the national standard and american standard charging communication protocol conversion control system according to any one of claims 1 to 6, characterized by comprising the following steps:
s1, inserting a quick charging gun of the American standard charging pile into a quick charging interface of the electric vehicle, and performing charging authentication and charging parameter interaction on the American standard charging pile EVCC and an electric vehicle communication controller EVSE;
s2, the charging conversion module CTU receives a charging signal from the American standard charging pile EVCC, the charging conversion module CTU controls a relay K inside the charging conversion module to be closed, so that a resistor R1 and a resistor R2 are kept in series connection, and the battery management system BMS recognizes a gun inserting signal;
s3, the American standard charging pile EVCC and the battery management system BMS respectively send charging handshake signals to the charging conversion module CTU, the charging conversion module CTU sends handshake response messages to the battery management system BMS according to the national standard requirements, and meanwhile, the charging conversion module CTU also sends handshake response messages to the American standard charging pile EVCC according to the American standard requirements;
s4, after the handshaking is successful, the battery management system BMS sends charging parameter information to the charging conversion module CTU in real time, and the charging conversion module CTU forwards all the charging parameter information to the American standard charging pile EVCC according to American standard requirements;
s5, the charging conversion module CTU monitors the charging parameter information of the battery management system BMS and the American standard charging pile EVCC in real time in the charging process, and executes fault processing in time after recognizing that the charging information is abnormal;
and S6, after the power battery pack is fully charged or the charging is stopped artificially, the charging conversion module CTU executes a charging ending action according to the charging stopping signal sent by the American standard charging pile EVCC and the battery management system BMS.
8. The method for controlling conversion of national and American standard charging communication protocols according to claim 7, wherein: the charging parameters include: charging voltage, charging current, charging mode, charging gun temperature and power battery pack monomer information.
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| CN202210354596.XA CN114771331A (en) | 2022-04-06 | 2022-04-06 | National standard and American standard charging communication protocol conversion control system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115923569A (en) * | 2022-10-09 | 2023-04-07 | 宁德时代新能源科技股份有限公司 | Charging method, charging device, electronic equipment and computer-readable storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115923569A (en) * | 2022-10-09 | 2023-04-07 | 宁德时代新能源科技股份有限公司 | Charging method, charging device, electronic equipment and computer-readable storage medium |
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