Charging controller compatible with European national standard and charging method

Abstract

The invention provides a charging controller and method compatible with the European national standard, and the charging controller comprises a charging socket which is electrically connected with a charging gun; the detection unit is connected with the charging socket and used for obtaining and outputting relevant information in the charging process when it is detected that the charging gun is inserted into the whole vehicle, and the relevant information comprises the resistance value of the charging gun and the temperature of the charging socket; and the main control and protocol conversion unit is respectively connected with the charging socket, the detection unit and the whole vehicle ECU, and is used for controlling communication between a charging pile connected with the charging gun and the whole vehicle ECU according to the received wake-up signal, converting the related information into CAN message data and sending the CAN message data to the whole vehicle ECU. The national standard and the European standard are integrated at the charging controller end, the type of the charging pile is determined according to the detected wake-up signal, then communication between the charging pile and the whole vehicle ECU is controlled, and the whole vehicle state is compatible with national standard and European standard charging.

Description

Technical Field

[0001] The present application relates to the technical field of pure electric vehicle charging and discharging, and in particular to a charging controller compatible with European national standards. Background Art

[0002] The European standard cars currently produced by car companies all add a protocol conversion module from European standard to national standard on the basis of national standard, and the charging port is changed from national standard to European standard. In this solution, the high and low voltage wiring harnesses of the whole vehicle must be distinguished between national standard version and European standard version, which not only increases the production cost but also brings inconvenience to the later maintenance.

[0003] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0004] The purpose of the present application is to propose a charging controller and method compatible with European national standards. In a first aspect, the present application provides a charging controller compatible with European national standards, the charging controller comprising:

[0005] Charging socket, used for electrical connection with the charging gun;

[0006] A detection unit connected to the charging socket, for acquiring and outputting relevant information during the charging process when detecting that the charging gun is inserted into the vehicle, wherein the relevant information includes the resistance value of the charging gun and the temperature of the charging socket;

[0007] The main control and protocol conversion unit is connected to the charging socket, the detection unit and the vehicle ECU respectively, and is used to control the communication between the charging pile connected to the charging gun and the vehicle ECU according to the received wake-up signal, and convert the relevant information into CAN message data and send it to the vehicle ECU.

[0008] Preferably, when the wake-up signal received by the main control and protocol conversion unit is an A+ wake-up signal, it is determined that the charging pile is a national standard fast charging pile;

[0009] The national standard fast charging pile communicates with the vehicle ECU through the S+ and S- wiring harnesses.

[0010] Preferably, before the master control and protocol conversion unit receives the A+ wake-up signal, it includes:

[0011] The detection unit detects the A+ wake-up signal output by the charging pile, and sends the A+ wake-up signal to the main control and protocol conversion unit.

[0012] Preferably, when the wake-up signal received by the master control and protocol conversion unit is a CP wake-up signal, the master control and protocol conversion unit detects a CP duty cycle;

[0013] When the CP duty cycle is within a first preset range, the CP signal is a digital signal, and the CC resistance of the charging gun is the fast charging gun head resistance, it is determined that the charging pile is a European standard fast charging pile;

[0014] The main control and protocol conversion unit converts the PLC communication of the European standard fast charging pile into CAN communication, so that the European standard fast charging pile communicates with the vehicle ECU through the S+ and S- wiring harnesses;

[0015] or,

[0016] When the CP duty cycle is within the second preset range and the CC resistance of the charging gun is the resistance of the slow charging gun tip, the charging pile is determined to be an AC slow charging pile;

[0017] The main control and protocol conversion unit forwards the CP signal to the vehicle ECU so that the vehicle ECU determines the current charging power of the AC slow charging pile.

[0018] Preferably, the main control and protocol conversion unit is also used to convert the relevant information detected by the detection unit into a CAN data packet and send it to the vehicle ECU.

[0019] In a second aspect, the present application further provides a charging method compatible with European and national standards, the method compatible with European and national standards comprising:

[0020] When it is detected that the charging gun of the charging pile is inserted into the vehicle, the charging controller receives a wake-up signal output by the charging pile;

[0021] The charging controller controls the communication between the charging pile connected to the charging gun and the vehicle ECU according to the wake-up signal.

[0022] Preferably, when the wake-up signal is an A+ wake-up signal, the charging controller determines that the charging pile is a national standard fast charging pile;

[0023] The national standard fast charging pile communicates with the vehicle ECU through the S+ and S- wiring harnesses.

[0024] Preferably, when the wake-up signal is a CP wake-up signal, the charging controller detects a CP duty cycle;

[0025] When the CP duty cycle is within a first preset range, the CP signal is a digital signal, and the CC resistance of the charging gun is the fast charging gun head resistance, it is determined that the charging pile is a European standard fast charging pile;

[0026] The charging controller converts the PLC communication of the European standard fast charging pile into CAN communication, so that the European standard fast charging pile communicates with the vehicle ECU through the S+ and S- wiring harnesses;

[0027] or,

[0028] When the CP duty cycle is within the second preset range and the CC resistance of the charging gun is the resistance of the slow charging gun tip, the charging pile is determined to be an AC slow charging pile;

[0029] The charging controller forwards the CP signal to the vehicle ECU so that the vehicle ECU determines the current charging power of the AC slow charging pile.

[0030] Preferably, the European standard compatible charging method further includes:

[0031] The charging controller detects relevant information of the charging pile, wherein the relevant information at least includes: the resistance value of the charging gun and the temperature of the charging socket;

[0032] The relevant information is converted into CAN message data and sent to the vehicle ECU.

[0033] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0034] The present application provides a charging controller and method compatible with national and European standards. By integrating national and European standards on the charging controller end, the type of charging pile is determined according to the detected wake-up signal, and then the communication between the charging pile and the vehicle ECU is controlled to achieve the compatibility of the vehicle status with national and European standard charging. At the same time, the charging controller only needs to configure different charging sockets according to the vehicle model to adapt to different vehicles, without the need for excessive operations, saving generation costs, and reducing the manufacturing and maintenance costs of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 A schematic diagram of the structure of a charging controller provided in an embodiment of the present application;

[0037] Figure 2 A schematic diagram of the structure of a charging charger provided in an embodiment of the present application;

[0038] Figure 3 A schematic diagram of the flow chart of the European standard compatible charging method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0041] refer to Figure 1 As shown, the present application provides a charging controller compatible with European national standards, including: a charging socket, a detection unit connected to the charging socket, and a main control and protocol conversion unit connected to the charging socket, the detection unit and the vehicle ECU respectively. In the present application, when the charging gun is inserted into the vehicle, it is electrically connected to the charging socket, and the detection unit obtains the resistance value of the charging gun, the temperature of the charging socket, etc. through the charging socket, and sends the resistance value of the charging gun and the temperature of the charging socket to the main control and protocol conversion unit. The main control and protocol conversion unit converts the information such as the resistance value of the charging gun and the temperature of the charging socket into CAN message data and sends it to the vehicle ECU. In the present application, the main control and protocol conversion unit also sends the charging CAN data sent by the charging pile connected to the charging gun to the vehicle ECU according to the received wake-up signal, so as to realize the communication between the charging pile and the vehicle ECU.

[0042] refer to Figure 2 As shown in Table 1, in an embodiment of the present application, the detection unit is connected to the CC2 pin, A+ pin, temperature sensing pin and CC pin of the charging socket. The detection unit detects the resistance of the charging gun of the national standard fast charge through the CC2 pin, detects the resistance of the charging gun of the national standard slow charge or the European standard fast charge through the CC pin, detects the wake-up signal output by the national standard charging pile through the A+ pin, detects the temperature of the charging socket through the temperature sensing pin, and sends the detected resistance of the charging gun, the temperature of the charging socket and the wake-up information to the main control and protocol conversion unit. The main control and protocol conversion unit are connected to the S+ pin, S- pin and CP pin of the charging socket, and are connected to the S+ pin, S- pin, CANH pin and CANL pin of the vehicle ECU. The main control and protocol conversion unit receives the CP wake-up signal through the CP pin, receives the charging CAN data output by the charging pile through the S+ pin and S- pin, and then sends it to the vehicle ECU through the S+ pin and S- pin connected to the vehicle ECU, so as to realize the communication between the vehicle ECU and the charging pile. The main control and protocol conversion unit also converts the resistance value of the charging gun sent by the detection unit, the temperature of the charging socket, etc. into CAN message data packets, and sends them to the vehicle ECU through the CANH pin and CANL pin.

[0043] In an embodiment of the present application, the national standard fast charging pile outputs an A+ wake-up signal through the A+ pin, and the corresponding charging controller end detects the A+ wake-up signal through the detection unit and forwards it to the main control and protocol conversion unit. Therefore, when the main control and protocol conversion unit receive the A+ wake-up signal, the main control and protocol conversion unit determine that the charging pile is a national standard fast charging pile, that is, the communication between the charging pile and the vehicle ECU adopts the national standard fast charging protocol. The main control and protocol conversion unit do not need to convert the charging CAN data sent by the charging pile, but directly transmit it to the vehicle ECU through the S+ pin and S- pin, so that the charging pile and the vehicle ECU maintain communication during the charging process to ensure the normal progress of the national standard fast charging.

[0044] In an embodiment of the present application, a European standard fast charging pile or an AC slow charging pile outputs a wake-up CP signal through a CP pin, and when the charging gun of the European standard fast charging pile or the AC slow charging pile is inserted into the vehicle ECU, the CP pin of the charging gun is electrically connected to the CP pin of the main control and protocol conversion unit. Therefore, when the main control and protocol conversion unit receives the CP wake-up signal directly sent by the charging pile through the CP pin, the main control and protocol conversion unit need to further detect the CP duty cycle to determine whether the charging pile is a European standard fast charging pile or an AC slow charging pile; when the CP duty cycle is in the first preset range, for example, the duty cycle is in the range of 3% to 7% When the main control and protocol conversion unit detects that the CC resistance of the charging gun is the fast charging gun head resistance through the CC pin, it is determined that the charging pile is a European standard fast charging pile; when the charging pile communicates with the vehicle ECU, the main control and protocol conversion unit converts the PLC communication of the European standard fast charging pile into CAN communication, that is, converts the PLC protocol charging information sent by the European standard fast charging pile through the PLC communication protocol into CAN data of the national standard fast charging protocol and sends it to the vehicle ECU, so that the European standard fast charging pile communicates with the vehicle ECU through the S+ and S- wiring harnesses to keep the normal progress of the European standard fast charging;

[0045] In an embodiment of the present application, when the CP duty cycle is in a second preset range, such as between 10% and 90%, and the main control and protocol conversion unit detects a slow charging gun tip resistance through the CC pin, the main control and protocol conversion unit determines that the charging pile is an AC slow charging pile. The main control and protocol conversion unit does not need to convert the communication protocol of the AC slow charging pile, and directly forwards the CP signal sent by the charging pile to the vehicle ECU for the vehicle ECU to confirm the current charging power.

[0046]

[0047] Table 1

[0048] refer to Figure 3As shown, the present application provides a charging method compatible with European national standards, including:

[0049] When it is detected that the charging gun of the charging pile is inserted into the vehicle, the charging controller receives a wake-up signal output by the charging pile;

[0050] The charging controller controls the communication between the charging pile connected to the charging gun and the vehicle ECU according to the wake-up signal.

[0051] In an embodiment of the present application, when the whole vehicle is charged by inserting a charging gun, a charging controller that integrates a national standard AC / DC integrated charging seat and a European standard charging seat detects a wake-up signal output by the charging gun, and the charging controller controls the communication between the charging pile and the whole vehicle ECU according to the wake-up signal. Through this method, whether the whole vehicle is charged by a national standard DC fast charging pile, a European standard DC fast charging pile, or a national standard AC charging pile, the type of the charging pile can be identified according to the wake-up signal, thereby controlling the charging communication between the charging pile and the whole vehicle.

[0052] In one embodiment of the present application, when the wake-up signal received by the charging controller is an A+ wake-up signal, the charging controller determines that the charging pile is a national standard fast charging pile, wherein the A+ wake-up signal is detected by the detection unit of the charging controller and transmitted to the main control of the charging controller and confirmed by the protocol conversion unit; the charging controller outputs the A+ wake-up signal to the vehicle ECU to wake up the vehicle, and the charging pile sends the charging CAN data to the charging controller through the S+ and S- harnesses, and the charging controller then sends the charging CAN data to the vehicle ECU through the S+ and S- harnesses, so as to realize the communication between the charging pile and the vehicle ECU and ensure the normal progress of the national standard fast charging. In this embodiment, after the charging pile wakes up the vehicle, the charging controller detects the resistance CC2 of the charging gun, and sends the resistance of the charging gun to the vehicle ECU in the form of message data through the CANH and CANL harnesses. During the charging process, the charging controller detects the temperature values ​​of the T1 pin and the T2 pin of the DC charging of the charging socket, and sends them to the vehicle ECU in the form of message data through the CANH and CANL harnesses.

[0053] In one embodiment of the present application, when the wake-up signal received by the charger is a CP wake-up signal, the charging controller needs to determine whether the current CP signal is output by a European standard fast charging pile or an AC slow charging pile. When the charging controller detects that the CP duty cycle is within a first preset range, such as 3% to 7%, and at the same time, when the charging controller detects that the CP signal is a digital signal, and detects that the resistance CC of the charging gun is the resistance of the fast charging gun head, it is determined that the current charging pile is a European standard DC fast charging pile. Since the European standard DC fast charging pile sends charging data through the PLC communication protocol during the charging process, after the charging controller receives the charging data sent by the charging pile based on the PLC communication protocol, the charging controller converts the charging data into charging CAN data based on the national standard fast charging communication protocol, and sends it to the vehicle ECU, thereby realizing communication between the charging pile and the vehicle ECU and ensuring the normal progress of the European standard fast charging.

[0054] In one embodiment of the present application, when the wake-up signal received by the charger is a CP wake-up signal, and the charging controller detects that the CP duty cycle is within a second preset range, for example, 10% to 90%, and at the same time, when the charging controller detects that the resistance CC of the charging gun is the resistance of the national standard AC slow charging gun head, it is determined that the current charging pile is an AC slow charging pile. Since the AC slow charging pile cannot communicate directly with the vehicle ECU, the controller directly forwards the CP signal after receiving the CP signal sent by the charging pile, so that the vehicle ECU can determine the charging power of the current charging pile according to the CP signal.

[0055] In one embodiment of the present application, during the charging process, the charging controller also detects relevant information in the charging process, such as the resistance CC2 of the charging gun, the temperature of the charging socket, etc., and converts the relevant information, such as the resistance CC2 and temperature, into CAN message data and sends it to the vehicle ECU.

[0056] In summary, the charging controller and method compatible with the European and national standards provided in this application, on the one hand, integrates the national standard and the European standard on the charging controller end, detects the wake-up signal output by the charging pile, determines the type of the charging pile according to the wake-up signal, and then controls the communication between the charging pile and the vehicle ECU; on the other hand, the above-mentioned charging controller only needs to configure different charging sockets according to the vehicle model, does not require too much operation, and saves production costs

[0057] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A charging controller compatible with European national standards, characterized in that: The charging controller comprises: Charging socket, used for electrical connection with the charging gun; A detection unit connected to the charging socket, for acquiring and outputting relevant information during the charging process when detecting that the charging gun is inserted into the vehicle, wherein the relevant information includes the resistance value of the charging gun and the temperature of the charging socket; The main control and protocol conversion unit is connected to the charging socket, the detection unit and the vehicle ECU respectively, and is used to control the communication between the charging pile connected to the charging gun and the vehicle ECU according to the received wake-up signal, and convert the relevant information into CAN message data and send it to the vehicle ECU.

2. The European standard compatible charging controller according to claim 1, characterized in that: When the wake-up signal received by the main control and protocol conversion unit is an A+ wake-up signal, it is determined that the charging pile is a national standard fast charging pile; The national standard fast charging pile communicates with the vehicle ECU through the S+ and S- wiring harnesses.

3. The European standard compatible charging controller according to claim 2, characterized in that: Before the master control and protocol conversion unit receives the A+ wake-up signal, it includes: The detection unit detects the A+ wake-up signal output by the charging pile, and sends the A+ wake-up signal to the main control and protocol conversion unit.

4. The European standard compatible charging controller according to claim 1, characterized in that: When the wake-up signal received by the master control and protocol conversion unit is a CP wake-up signal, the master control and protocol conversion unit detects a CP duty cycle; When the CP duty cycle is within a first preset range, the CP signal is a digital signal, and the CC resistance of the charging gun is the fast charging gun head resistance, the charging pile is determined to be a European standard fast charging pile; The main control and protocol conversion unit converts the PLC communication of the European standard fast charging pile into CAN communication, so that the European standard fast charging pile communicates with the vehicle ECU through the S+ and S- wiring harnesses; or, When the CP duty cycle is within the second preset range and the CC resistance of the charging gun is the resistance of the slow charging gun tip, it is determined that the charging pile is an AC slow charging pile; The main control and protocol conversion unit forwards the CP signal to the vehicle ECU so that the vehicle ECU determines the current charging power of the AC slow charging pile.

5. The European standard compatible charging controller according to any one of claims 1 to 4, characterized in that: The main control and protocol conversion unit is also used to convert the relevant information detected by the detection unit into a CAN data packet and send it to the vehicle ECU.

6. A charging method compatible with European national standards, characterized in that: The European standard compatible method includes: When it is detected that the charging gun of the charging pile is inserted into the vehicle, the charging controller receives a wake-up signal output by the charging pile; The charging controller controls the communication between the charging pile connected to the charging gun and the vehicle ECU according to the wake-up signal.

7. The European standard compatible charging method according to claim 6, characterized in that: When the wake-up signal is an A+ wake-up signal, the charging controller determines that the charging pile is a national standard fast charging pile; The national standard fast charging pile communicates with the vehicle ECU through the S+ and S- wiring harnesses.

8. The European standard compatible charging method according to claim 6, characterized in that: When the wake-up signal is a CP wake-up signal, the charging controller detects a CP duty cycle; When the CP duty cycle is within a first preset range, the CP signal is a digital signal, and the CC resistance of the charging gun is the fast charging gun head resistance, the charging pile is determined to be a European standard fast charging pile; The charging controller converts the PLC communication of the European standard fast charging pile into CAN communication, so that the European standard fast charging pile communicates with the vehicle ECU through the S+ and S- wiring harnesses; or, When the CP duty cycle is within the second preset range and the CC resistance of the charging gun is the resistance of the slow charging gun tip, it is determined that the charging pile is an AC slow charging pile; The charging controller forwards the CP signal to the vehicle ECU so that the vehicle ECU determines the current charging power of the AC slow charging pile.

9. The European standard compatible charging method according to any one of claims 6 to 8, characterized in that: The European standard-compatible charging method further includes: The charging controller detects relevant information of the charging pile, wherein the relevant information at least includes: the resistance value of the charging gun and the temperature of the charging socket; The relevant information is converted into CAN message data and sent to the vehicle ECU.

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