CN114801875A - Battery management system and management method of integrated electric vehicle communication controller - Google Patents

Abstract

The invention relates to a battery management system and a management method of an integrated electric vehicle communication controller, wherein the battery management system comprises a national standard charging interface, a European standard charging interface, an EVCC module and a BMS module; the EVCC module is integrated on the BMS module; the external interfaces of the battery management system include PP port, CP port, S + port, S-port, A + port, A-port, and CC2 port. According to the technical scheme, the EVCC module and the BMS module are integrated to form an integrated battery management system, a compatible whole vehicle electrical framework is provided, the external interface and software of the integrated battery management system take national standard and European standard charging into consideration, and the platform and compatibility design of BMS software, EVCC software and vehicle-mounted charger software is realized.

Description

Battery management system and management method of integrated electric vehicle communication controller

Technical Field

The invention belongs to the technical field of electric vehicle battery management, and particularly relates to a battery management system and a management method of an integrated electric vehicle communication controller.

Background

Because of the regional difference between the development environment and the market form of the electric vehicle, the current domestic and foreign charging standards are not unified, and the charging interface structures such as a plug and a socket, and the communication protocols between the vehicle and the charging pile are different. The difference between the European charging standard and the domestic charging standard is large, and the national standard electric vehicle product needs to redevelop a plurality of components and devices related to the charging function aiming at the European charging standard, wherein the components and the devices comprise newly added special European standard electric vehicle communication controller hardware and software, a charging software module related to a development vehicle controller and a battery management system, and vehicle-mounted charger software is adjusted to identify the European standard charging pile, adjust the charging current, change a vehicle charging socket and a wire harness and the like, so that extra development cost, development period and technical challenges are brought to the vehicle.

The patent number CN202010007728.2, entitled "european standard ac/dc compatible system modified by national standard system" and its working method, discloses a method for realizing national standard compatible ac/dc charging by modification. However, the technology has the following disadvantages: the first is that the integration level is insufficient, and it is not clear whether the PLC module supports the modification work compatible with the European standard by integration or as an independent component, which is vague; secondly, the adaptability is insufficient, the compiling work description of the national standard charging protocol and the European standard charging protocol undertaken by the PLC module is fuzzy, and the landing implementation is difficult; thirdly, the reliability is insufficient, the battery management system decides to enter an alternating current or direct current charging process only by judging the duty ratio signal, and the specific implementation process of entering the direct current charging process is fuzzy. The patent number CN201921853144.6, entitled european standard compatible dc charger, discloses an electric vehicle communication controller, which is connected to a european standard charging pile and a battery management system of a national standard electric vehicle, respectively, to realize communication between the european standard charging pile and the national standard electric vehicle, and further realize the european standard charging of the national standard electric vehicle. The invention has the following disadvantages: the first is that the integration level is insufficient, and the described compatibility scheme cannot realize the platformization of software and hardware of the vehicle-end related control system; secondly, the adaptability is insufficient, the compatibility of the European standard charging pile and a national standard electric vehicle is only solved from the charging pile end, the route dependence on the transformation of the European standard charging pile exists, and the implementation is passive; thirdly, reliability is insufficient, only a method for realizing compatibility of the pile end is described conceptually, and a connection mode for reliably entering a corresponding charging process is not described.

At the heart of the above development work are hardware and software of the communication controller of the electric vehicle (abbreviated as "EVCC") and the battery management system (abbreviated as "BMS"). The BMS hardware and software which can take the European charging standard (called European standard for short) and the Chinese charging standard (called national standard for short) into consideration are developed, so that the simple and rapid development work of changing the charging socket and the wiring harness of the national standard vehicle can be realized, the European charging pile can be rapidly adapted, and the significance is great.

Disclosure of Invention

The invention aims to provide a battery management system and a battery management method of an integrated electric vehicle communication controller, so as to realize the platform design of relevant parts of national standard and European standard charging functions of a pure electric vehicle, have high integration level, good reliability and strong adaptability, effectively shorten the product development period, save the cost and solve the problems of long time consumption and large investment of European adaptability development of export of the national standard electric vehicle.

In order to achieve the above purpose, the present application is realized by the following technical scheme:

a battery management system integrated with an electric vehicle communication controller comprises a national standard charging interface, a European standard charging interface, an EVCC module and a BMS module; the EVCC module is integrated on the BMS module;

the external interface of the battery management system comprises a PP port, a CP port, an S + port, an S-port, a CC2 port, an A + port and an A-port, wherein the PP port and the CP port are only used for interaction between the EVCC module and the European standard charging interface and only adopt PLC communication;

the S + port, the S-port, the A + port and the A-port are only used for interaction with a national standard charging interface and only adopt CAN communication;

the CC2 port is the hard-line interface, and when national standard charges, is used for BMS module and direct current to fill the interface soon and confirms being connected, adopts CAN communication, and when the european standard charges, is used for EVCC module and european standard direct current to fill the interface soon and confirms being connected.

Further, the EVCC module is in signal connection with the BMS module through four interfaces, namely an internal S + interface, an internal S-interface, an EV _ wake _ up hard wire interface and a CC2 hard wire interface, wherein the internal S + interface and the internal S-interface complete CAN communication interaction, and signal sources are an S + port and an S-port of the national standard charging interface; the EV _ wake _ up hard wire interface realizes mutual awakening between the EVCC module and the BMS module through the EV _ wake _ up hard wire; the CC2 hard wire interface respectively confirms the success of direct current quick charging gun insertion of a national standard charging interface or a European standard charging interface through a CC2 hard wire.

Further, the national standard charging interface comprises a national standard alternating current slow charging interface and a national standard direct current fast charging interface;

the national standard alternating current slow charging interface comprises a CC port, a CP port, an N port, a PE port and an L1 port;

the national standard direct current quick charging interface comprises an S + port, an S-port, a CC1 port, a CC2 port, a DC + port, a DC-port, an A + port, an A-port and a PE port.

Furthermore, the European standard charging interface comprises an integrated European standard alternating current slow charging interface and an European standard direct current fast charging interface; the device comprises a PP port, a CP port, an L1 port, an L2 port, an L3 port, an N port, an ^ port, a DC + port and a DC-port; the PP port and the CP port are simultaneously in electric signal connection with the EVCC module and the vehicle-mounted charger, and are used as an interactive interface for European standard direct current fast charging and an interactive interface for European standard alternating current slow charging.

A management method of an integrated electric vehicle communication controller uses a battery management system of the integrated electric vehicle communication controller, which comprises a national standard charging management mode and a European standard charging management mode; the national standard charging management mode comprises a national standard alternating current slow charging management mode and a national standard direct current fast charging management mode.

Further, the national standard charging management mode comprises the following steps:

the international exchange slow charging management mode comprises the following steps:

(1) the national standard alternating current slow charging gun is inserted into a national standard alternating current slow charging interface, a CC port of the national standard alternating current slow charging interface is connected, a CC signal line wakes up the vehicle-mounted charger through loop resistance value change caused by resistance value access in the national standard alternating current slow charging gun, and the vehicle-mounted charger completes self-checking after being awakened;

(2) the vehicle-mounted charger detects a PWM duty ratio signal of the CP circuit, detects whether the duty ratio is in a set range, and controls the CP circuit to be further connected to inform the charging pile that the vehicle can be charged if the duty ratio meets the charging condition;

(3) after receiving the alternating current, the vehicle-mounted charger outputs a 12V wake-up signal to the BMS through the A + port and the A-port, at the moment, the vehicle-mounted charger interacts with the BMS through a CAN signal to wake-up the signal, and the BMS judges that the current state is a national standard alternating current slow charging state according to the signal;

(4) the BMS regulates the charging current according to a conventional charging control program until the alternating-current slow charging is finished;

the national standard direct current quick charging management mode comprises the following steps:

the method comprises the steps that a national standard direct current quick charging gun is inserted into a national standard direct current quick charging interface, CAN communication signals of an A + port and an A-port of the national standard direct current quick charging interface wake up a BMS, the BMS detects the connection state of a CC2 port after being woken up, if the CC2 port is detected to be reliably connected, the national standard direct current quick charging gun is confirmed to be successfully inserted, and the national standard direct current quick charging process is started;

in the national standard direct current quick charging process, the BMS and the direct current quick charging pile perform direct current quick charging CAN communication information interaction through an S + port and an S-port of a national standard direct current quick charging interface, and the charging current is adjusted until charging is completed.

Furthermore, under the national standard charging management mode, the EVCC module does not participate in any information interaction.

Further, the european standard charging management mode includes:

(11) after the European standard charging gun is inserted into the European standard charging interface, the PP port is connected, and the EVCC module detects that the resistor R is connected into the circuit and confirms that the European standard charging gun is inserted;

(12) the EVCC module detects the duty ratio of the CP port, the CP port transmits a duty ratio signal output by the charging pile to the EVCC module through PLC communication, when the EVCC module detects that the duty ratio is less than 5%, the direct current quick charging is judged, the European standard direct current quick charging management mode in the step (13) is entered, when the duty ratio is 6% -93%, the alternating current slow charging is judged, and the European standard alternating current slow charging management mode in the step (14) is entered;

(13) the European standard direct current quick charging management mode comprises the following steps:

the EVCC module interacts with the direct current charging pile through PLC communication to detect that the state of the direct current charging pile meets the charging requirement; after confirming that the direct current quick charging is currently performed, the EVCC module sends a direct current charging request to the BMS module, and after receiving the request, the BMS module confirms that the direct current quick charging mode is performed at the moment and then sends a charging current instruction to the EVCC module; after receiving a charging current instruction sent by the BMS, the EVCC module transmits the charging current instruction to the European standard charging pile, adjusts the direct current quick charging current and completes the direct current quick charging process;

(14) the L port, the N port and the PE port are connected to a vehicle-mounted charger, and DC + and DC-output by the vehicle-mounted charger enter a power battery; at the moment, the EVCC module does not participate in the alternating-current slow charging control process, and the BMS module completes the slow charging process at constant current according to a conventional charging control program.

Compared with the prior art, the invention has the beneficial effects that:

according to the technical scheme, the EVCC module and the BMS module are integrated to form an integrated battery management system, a compatible whole vehicle electrical framework is provided, the external interface and software of the integrated battery management system take national standard and European standard charging into consideration, and the platform and compatibility design of BMS software, EVCC software and vehicle-mounted charger software is realized.

Drawings

Fig. 1 is a schematic diagram of a non-integrated international ac slow charging interface and an international dc fast charging interface according to the present invention.

Fig. 2 is a schematic diagram of an ac slow-connection and dc fast-charging integrated european standard charging interface according to the present invention.

Fig. 3 is a schematic diagram of the integration of an EVCC module and a BMS module.

Fig. 4 is a schematic diagram of an integrated battery management system according to the present invention.

Fig. 5 is a schematic diagram of a national standard charging electrical architecture.

Fig. 6 is a schematic diagram of the european standard charging electrical architecture.

Detailed Description

The following embodiments are merely exemplary, and are not to be construed as limiting the technical aspects of the present invention.

As shown in fig. 1, the non-integrated international ac slow charging and dc fast charging interfaces are provided, wherein the smaller left side is the international ac slow charging interface, and the larger right side is the international dc fast charging interface. The national standard interface that charges of this application, socket are structurally integrated, but the national standard rifle plug that charges is non-integrated, has that the interchange charges the rifle slowly and the direct current charges the rifle that charges soon two kinds.

The national standard alternating current slow charging interface comprises a CC port, a CP port, an N port, a PE port and an L1 port; the CC port is a resistance connection confirmation channel and is used for gun insertion confirmation of the charging gun; the CP port duty ratio and the PLC interaction channel are used for transmitting PLC communication; the N port is a zero line interface of alternating current; the PE port is an alternating current ground wire interface; the L1 port is a live wire interface for AC power.

The national standard direct current quick charging interface comprises an S + port, an S-port, a CC1 port, a CC2 port, a DC + port, a DC-port, an A + port, an A-port and a PE port. The S + port is a high-end CAN communication port and is used for information interaction between the charging pile and a vehicle; the S-port is a CAN communication low end and is used for information interaction between the charging pile and the vehicle; the CC1 port is used for detecting whether the vehicle is reliably connected or not by the charging pile; the CC2 port is used for detecting whether the charging piles are reliably connected or not by the vehicle; the DC + port is a direct current positive electrode interface; the DC-port is a direct current negative electrode interface; the A + port is a 12V normal-electricity positive electrode interface; the A-port is a 12V normal-electricity negative electrode interface; the PE port is a ground wire interface.

Fig. 2 shows an ac slow charging and DC fast charging integrated european standard charging interface, which includes a PP port, a CP port, an L1 port, an L2 port, an L3 port, an N port, a |, + DC + port, and DC-port; the PP port and the CP port are simultaneously in electric signal connection with the EVCC module and the vehicle-mounted charger, and are used as an interactive interface for European standard direct current fast charging and an interactive interface for European standard alternating current slow charging. The PP port is a connection confirmation channel of a resistor and used for confirming a gun insertion, and the function of the PP port is the same as that of a CC port charged in the national standard; the CP port is a duty ratio and PLC interaction channel and is used for transmission of PLC communication, and the function of the CP port is the same as that of the CP port charged by the national standard; the L1 port, the L2 port and the L3 port are three-phase interfaces of three-phase alternating current; the N port is a zero line port; the ^ port is a ground wire interface; the DC + port is a direct current positive electrode interface; the DC-port is a DC negative electrode interface.

The main differences between the european standard charging and the national standard charging are as follows: the communication protocols are different, the European standard charging is ISO15118/DIN70121, and the national standard charging is GB 27930; the communication modes are different, PLC is adopted for European standard charging, and CAN is adopted for national standard charging; the interfaces have different structures, as shown in the above figures 1 and 2; the quantity and the definition of the interfaces are different, the national standard charging interface comprises an A + port, an A-port, a CC2 port and the like, and the European standard charging interface does not comprise the ports.

As shown in fig. 3, the present application provides a battery management system integrated with a communication controller of an electric vehicle, which includes a national standard charging interface, a european standard charging interface, an EVCC module, and a BMS module; the EVCC module is integrated on the BMS module. The EVCC module is used for realizing PLC communication between electric vehicle and the European standard charging pile, and the BMS module also has a CAN communication module, so that CAN communication interaction between the electric vehicle and the national standard direct current charging pile is realized.

The EVCC module is in signal connection with the BMS module through four paths of interfaces, namely an internal S + interface, an internal S-interface, an EV _ wake _ up hard wire interface and a CC2 hard wire interface, wherein the internal S + interface and the internal S-interface finish the interaction of CAN communication, and the signal sources are an S + port and an S-port of the national standard charging interface; the EV _ wake _ up hard wire interface realizes mutual awakening between the EVCC module and the BMS module through the EV _ wake _ up hard wire; the CC2 hard wire interface respectively confirms the success of direct current quick charging gun insertion of a national standard charging interface or a European standard charging interface through a CC2 hard wire.

As shown in fig. 4, the external interface of the battery management system includes a PP port, a CP port, an S + port, an S-port, a CC2 port, an a + port, and an a-port, and is used to realize the interaction between the electric vehicle and the european standard or national standard charging pile, wherein the PP port and the CP port are only used for the interaction between the EVCC module and the european standard charging interface, and are only in PLC communication with the integrated battery management system.

The S + port, the S-port, the A + port and the A-port are only used for interaction of the integrated battery management system and the national standard charging interface, and only CAN communication is adopted.

The CC2 port is the hard-line interface, and when national standard charges, is used for BMS module and direct current to fill the interface soon and confirms being connected, adopts CAN communication, and when the european standard charges, is used for EVCC module and european standard direct current to fill the interface soon and confirms being connected.

The integrated battery management system and other associated controllers of the electric vehicle comprise a vehicle-mounted charger and adopt CAN communication.

The application also provides a management method of the integrated electric automobile communication controller, and a battery management system using the integrated electric automobile communication controller comprises a national standard charging management mode and an European standard charging management mode; the national standard charging management mode comprises a national standard alternating current slow charging management mode and a national standard direct current fast charging management mode.

As shown in fig. 5, which is a schematic diagram of a national standard charging electrical architecture, the national standard ac slow charging gun head and the national standard dc fast charging gun head are structurally non-integrated, and during normal operation, a user only needs to insert one charging gun, and if both the ac slow charging gun and the dc fast charging gun are in an inserted state, the ac slow charging demand is preferentially responded.

The international exchange slow charging management mode comprises the following steps:

and a CP port and a CC port of a national standard charging interface are connected into a vehicle-mounted charger to implement information interaction.

(1) The national standard alternating current slow charging gun is inserted into a national standard alternating current slow charging interface, a CC port of the national standard alternating current slow charging interface is connected, a CC signal line wakes up the vehicle-mounted charger through loop resistance value change caused by resistance value access in the national standard alternating current slow charging gun, and the vehicle-mounted charger completes self-checking after being awakened.

(2) The vehicle-mounted charger detects a PWM duty ratio signal of the CP loop, detects whether the duty ratio is within a set range, and if the duty ratio is less than or equal to 7% or more than 90%, charging is not allowed; the duty cycle is between 8% and 90% to allow charging. And if the duty ratio meets the charging condition, the vehicle-mounted charger controls the CP loop to be further switched on to inform the charging pile that the vehicle can be charged.

(3) After the vehicle-mounted charger receives the alternating current, a 12V wake-up signal is output to the BMS through the A + port and the A-port, the vehicle-mounted charger interacts with the BMS through the CAN signal to wake-up the signal at the moment, and the BMS judges that the current state is the national standard alternating current slow charging state according to the signal.

(4) The BMS regulates the charging current according to a conventional charging control program until the alternating current slow charging is completed.

The national standard direct current quick charging management mode comprises the following steps:

the national standard direct current quick charging gun is inserted into a national standard direct current quick charging interface, and an S + port, an S-port, an A + port, an A-port and the like of the national standard charging interface are connected into the integrated battery management system. And the BMS is awakened by CAN communication signals of an A + port and an A-port of the national standard direct current quick charging interface, the connection state of the CC2 port is detected after the BMS is awakened, and if the CC2 port is detected to be reliably connected, the national standard direct current quick charging gun is confirmed to be successfully inserted, and the national standard direct current quick charging process is started.

In the national standard direct current quick charging process, the BMS and the direct current quick charging pile perform direct current quick charging CAN communication information interaction through an S + port and an S-port of a national standard direct current quick charging interface, and the charging current is adjusted until charging is completed.

Under the national standard charging management mode, the EVCC module does not participate in any information interaction and does not work.

As shown in fig. 6, which is a schematic diagram of an electrical architecture for charging in the european standard, a PP port and a CP port of the charging interface in the european standard are simultaneously connected to the integrated battery management system and the vehicle-mounted charger, and the PP port and the CP port are used as an interactive interface for dc fast charging and an interactive interface for ac slow charging. After the charging gun is inserted into the electric vehicle, the PP port is connected, the EVCC module detects that the resistor R is connected into the circuit, and the fact that the charging gun is inserted is confirmed. Then, the EVCC module detects the duty ratio of the CP port, the CP port transmits a duty ratio signal output by the charging pile to the EVCC module through PLC communication, and when the EVCC module detects that the duty ratio is less than 5%, direct-current quick charging is judged; when the duty ratio is 6% -93%, the alternating current slow charging is judged.

The EVCC module interacts with the direct current charging pile through PLC communication to detect that the state of the direct current charging pile meets the charging requirement; meanwhile, the EVCC module also interacts with CAN communication information of a charging relevant controller of the electric vehicle to detect the readiness of the electric vehicle. After the EVCC module confirms that the current direct current quick charging mode is established, the switch S1 shown in fig. 3 is closed, the PE port, R3, R5, and U2 form a loop, and the EVCC module sends a direct current charging request to the BMS module; after receiving the request, the BMS module confirms that the charging current is in a fast charging mode at the moment, and then sends a charging current instruction to the EVCC module; and after receiving the charging current instruction sent by the BMS module, the EVCC module transmits the charging current instruction to the European standard charging pile, adjusts the direct current quick charging current and completes the direct current quick charging process.

The L port, the N port and the PE port are connected into a vehicle-mounted charger, and a DC + port and a DC-port output by the vehicle-mounted charger enter a power battery. At this time, the switch of the S1 is not closed, the EVCC module does not participate in the AC slow charging control process, and the slow charging process is basically completed by the BMS module according to the constant current according to the preset charging current control software (which is a control program for conventional charging).

The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.

Claims (8)

1. A battery management system integrated with an electric vehicle communication controller is characterized by comprising a national standard charging interface, an European standard charging interface, an EVCC module and a BMS module; the EVCC module is integrated on the BMS module;

the external interface of the battery management system comprises a PP port, a CP port, an S + port, an S-port, a CC2 port, an A + port and an A-port, wherein the PP port and the CP port are only used for interaction between the EVCC module and the European standard charging interface and only adopt PLC communication;

the S + port, the S-port, the A + port and the A-port are only used for interaction with a national standard charging interface and only adopt CAN communication;

the CC2 port is the hard-line interface, and when national standard charges, is used for BMS module and direct current to fill the interface soon and confirms being connected, adopts CAN communication, and when the european standard charges, is used for EVCC module and european standard direct current to fill the interface soon and confirms being connected.

2. The battery management system of the integrated electric vehicle communication controller of claim 1, wherein the EVCC module is in signal connection with the BMS module through four interfaces, which are an internal S + interface, an internal S-interface, an EV _ wake _ up hard-wire interface, and a CC2 hard-wire interface, respectively, wherein the internal S + interface and the internal S-interface complete the interaction of CAN communication, and the signal sources are an S + port and an S-port of the national standard charging interface; the EV _ wake _ up hard wire interface realizes mutual awakening between the EVCC module and the BMS module through the EV _ wake _ up hard wire; the CC2 hard wire interface respectively confirms the success of direct current quick charging gun insertion of a national standard charging interface or a European standard charging interface through a CC2 hard wire.

3. The battery management system of the integrated electric vehicle communication controller according to claim 2, wherein the national standard charging interface comprises a national standard alternating current slow charging interface and a national standard direct current fast charging interface;

the national standard alternating current slow charging interface comprises a CC port, a CP port, an N port, a PE port and an L1 port;

the national standard direct current quick charging interface comprises an S + port, an S-port, a CC1 port, a CC2 port, a DC + port, a DC-port, an A + port, an A-port and a PE port.

4. The battery management system of the integrated electric vehicle communication controller of claim 2, wherein the european standard charging interface comprises an integrated european standard ac slow charging interface and an european standard dc fast charging interface; the device comprises a PP port, a CP port, an L1 port, an L2 port, an L3 port, an N port, an ^ port, a DC + port and a DC-port; the PP port and the CP port are simultaneously in electric signal connection with the EVCC module and the vehicle-mounted charger, and are used as an interactive interface for European standard direct current fast charging and an interactive interface for European standard alternating current slow charging.

5. A management method of an integrated electric vehicle communication controller, characterized in that, a battery management system using the integrated electric vehicle communication controller of any one of the above claims 1 to 4 comprises a national standard charging management mode and a european standard charging management mode; the national standard charging management mode comprises a national standard alternating current slow charging management mode and a national standard direct current fast charging management mode.

6. The management method of the integrated electric vehicle communication controller according to claim 5, wherein the national standard charging management mode comprises the following steps:

the international exchange slow charging management mode comprises the following steps:

(1) the national standard alternating current slow charging gun is inserted into a national standard alternating current slow charging interface, a CC port of the national standard alternating current slow charging interface is connected, a CC signal line wakes up the vehicle-mounted charger through loop resistance value change caused by resistance value access in the national standard alternating current slow charging gun, and the vehicle-mounted charger completes self-checking after being awakened;

(2) the vehicle-mounted charger detects a PWM duty ratio signal of the CP circuit, detects whether the duty ratio is in a set range, and controls the CP circuit to be further connected to inform the charging pile that the vehicle can be charged if the duty ratio meets the charging condition;

(3) after receiving the alternating current, the vehicle-mounted charger outputs a 12V wake-up signal to the BMS through the A + port and the A-port, at the moment, the vehicle-mounted charger interacts with the BMS through a CAN signal to wake-up the signal, and the BMS judges that the current state is a national standard alternating current slow charging state according to the signal;

(4) the BMS regulates the charging current according to a conventional charging control program until the alternating-current slow charging is finished;

the national standard direct current quick charging management mode comprises the following steps:

the method comprises the steps that a national standard direct current quick charging gun is inserted into a national standard direct current quick charging interface, CAN communication signals of an A + port and an A-port of the national standard direct current quick charging interface wake up a BMS, the BMS detects the connection state of a CC2 port after being woken up, if the CC2 port is detected to be reliably connected, the national standard direct current quick charging gun is confirmed to be successfully inserted, and the national standard direct current quick charging process is started;

in the national standard direct current quick charging process, the BMS and the direct current quick charging pile perform direct current quick charging CAN communication information interaction through an S + port and an S-port of a national standard direct current quick charging interface, and the charging current is adjusted until charging is completed.

7. The management method of the integrated electric vehicle communication controller of claim 6, wherein in the national standard charging management mode, the EVCC module does not participate in any information interaction.

8. The management method of the integrated electric vehicle communication controller of claim 5, wherein the Euro standard charging management mode comprises:

(11) after the European standard charging gun is inserted into the European standard charging interface, the PP port is connected, and the EVCC module detects that the resistor R is connected into the circuit and confirms that the European standard charging gun is inserted;

(12) the EVCC module detects the duty ratio of the CP port, the CP port transmits a duty ratio signal output by the charging pile to the EVCC module through PLC communication, when the EVCC module detects that the duty ratio is less than 5%, the direct current quick charging is judged, the European standard direct current quick charging management mode in the step (13) is entered, when the duty ratio is 6% -93%, the alternating current slow charging is judged, and the European standard alternating current slow charging management mode in the step (14) is entered;

(13) the European standard direct current quick charging management mode comprises the following steps:

the EVCC module interacts with the direct current charging pile through PLC communication to detect that the state of the direct current charging pile meets the charging requirement; after confirming that the direct current quick charging is currently performed, the EVCC module sends a direct current charging request to the BMS module, and after receiving the request, the BMS module confirms that the direct current quick charging mode is performed at the moment and then sends a charging current instruction to the EVCC module; after receiving a charging current instruction sent by the BMS, the EVCC module transmits the charging current instruction to the European standard charging pile, adjusts the direct current quick charging current and completes the direct current quick charging process;

(14) the L port, the N port and the PE port are connected to a vehicle-mounted charger, and DC + and DC-output by the vehicle-mounted charger enter a power battery; at the moment, the EVCC module does not participate in the alternating-current slow charging control process, and the BMS module completes the slow charging process at constant current according to a conventional charging control program.

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