Multifunctional charging control system and method for electric vehicle

Abstract

The invention provides a multifunctional charging control system and method for an electric automobile, and belongs to the technical field of control modules, and the system comprises a first charging module, a second charging module and a third charging module which are used for executing the charging action of the electric automobile; the control module comprises a vehicle control unit and a charging communication controller, the vehicle control unit and the charging communication controller are in communication connection through a TTL pin to complete communication, and working states can be interacted to cooperatively complete function awakening during charging and complete machine dormancy after charging; when the system is applied, charging modes of different standards can be configured, when the system is configured to be national standard, the first charging module is called, or when the system is configured to be European standard, the second charging module is called, or when the system is configured to be daily standard, the third charging module is called, so that the system is in butt joint with a corresponding charging pile to charge an electric vehicle. According to the invention, the technical problem that the matching between the vehicle control unit and the charging communication controller is difficult when different types of charging standards are matched in the prior art is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle controllers, and in particular to a multifunctional charging control system and method for an electric vehicle. Background Art

[0002] New energy electric vehicles have become increasingly popular in people's daily lives, and charging is one of their important functions. However, the charging standards of countries and regions around the world are different. For example, the GB / T standard is used in China, the CCS standard is used in Europe and the United States, and the CHAdeMO standard is used in Japan and Southeast Asia.

[0003] In order to meet different protocols, EVCC (Charging Communication Controller) was invented to match different types of charging standards. As a necessary device for new energy vehicles, VCU (Vehicle Control Unit) is like the brain of the vehicle, responsible for collecting signals from various modules on the vehicle, such as accelerator, brake, gear, etc.; processing and calculating signals; sending data to display devices such as instruments; coordinating the work between different modules, such as oil pumps, air pumps, travel motors, etc., so that the vehicle can travel, brake, and park normally. At present, the market generally needs to install two modules, VCU and EVCC, on the vehicle to complete normal charging docking and driving control.

[0004] At present, the market generally requires the installation of two modules, VCU and EVCC, on the vehicle separately. This solution is costly and has low integration. In addition, VCU and EVCC often come from different suppliers, making joint debugging and communication difficult. Summary of the invention

[0005] In view of this, it is necessary to provide a multifunctional charging control system and method for electric vehicles to solve the technical problem of the prior art that VCU and EVCC are difficult to cooperate when matching different types of charging standards.

[0006] In order to solve the above technical problems, the present invention provides a multifunctional charging control system for an electric vehicle, comprising: A first charging module, a second charging module and a third charging module for performing an electric vehicle charging operation; A control module, including a vehicle controller for monitoring and controlling the running state of the electric vehicle and a charging communication controller for completing interaction with a charging pile to configure charging, wherein the vehicle controller and the charging communication controller are connected via TTL pin communication; The vehicle controller is used to control the torque of the vehicle and the coordination between other modules of the vehicle including the air pump, oil pump, DCDC and PDU, as well as the control of related relays during charging; When the charging communication controller detects that the charging configuration obtained by the charging communication controller is the national standard, it calls the first charging module, or when the charging configuration is the European standard, it calls the second charging module, or when the charging configuration is the Japanese standard, it calls the third charging module to connect to the corresponding charging pile to charge the electric vehicle.

[0007] In a possible implementation, the first charging module includes: a CC control circuit and an auxiliary source detection circuit; The second charging module includes: a CP control circuit and a PP control circuit; The third charging module includes: a CS control circuit and the CP control circuit.

[0008] In a possible implementation, the second charging module further includes: a carrier communication control circuit, which is used to exchange data with the charging pile to monitor the charging process of the electric vehicle.

[0009] In a possible implementation, the vehicle controller includes: Digital input module, used to collect digital input signals including gear position and key; Digital output module, used to control the operation of other components including lights and auxiliary drive components; Analog input module, used to collect analog input signals including accelerator and brake; Analog output modules for controlling the operation of actuators including fans; The CAN communication module is used to communicate with the battery management system and motor controller of the electric vehicle to distribute torque and enable auxiliary drive. It is also used to establish a communication connection between the battery management system and the charging pile to obtain the charging configuration of the charging pile and monitor the charging process in real time.

[0010] In a possible implementation, the charging communication controller includes: A charging control steering circuit, used for calling the first charging module or the second charging module or the third charging module according to the charging configuration; Electronic lock control circuit, used to control the start and stop of the electric vehicle electronic lock; The temperature detection module is used to monitor the temperature of the electric vehicle in real time.

[0011] In a possible implementation, the charging control steering circuit is further used to connect the CAN communication module when the first charging module is called, and to connect the electronic lock control circuit when the third charging module is called.

[0012] In a possible implementation, the system further includes: a human-computer interaction module, which is communicatively connected to the control module and is used to manually set the charging configuration of the charging pile and store it in the control module, so that the control module controls the electric vehicle to connect to the corresponding charging module in advance.

[0013] The present invention also provides a multifunctional charging control method for an electric vehicle, which is applied to the multifunctional charging control system for an electric vehicle described in any one of the above-mentioned system items, comprising: The first charging module, the second charging module or the third charging module is called based on the set charging configuration to enable the electric vehicle to enter a charging state.

[0014] In a possible implementation, the charging configuration includes: national standard GB / T, European standard CCS and Japanese standard CHAdeMO.

[0015] In a possible implementation manner, the calling the first charging module or the second charging module or the third charging module based on the charging configuration: When the charging configuration is the national standard GB / T, the first charging module is called, and the CAN communication module is turned on at the same time, and the GB / T charging processing logic is entered; When the charging configuration is the European standard CCS, the second charging module is called, and the electronic lock control circuit is turned on at the same time, and the CCS charging processing logic is entered; When the charging configuration is the Japanese standard CHAdeMO, the third charging module is called, and the CAN communication module is turned on at the same time to enter the CHAdeMO charging processing logic.

[0016] The beneficial effects of the present invention are as follows: the multifunctional charging control system for electric vehicles provided by the present invention is configured with a control module, and the whole vehicle controller and the charging communication controller are integrated at the same time. Only one module is used to complete the functions that could only be completed by two modules before, and the integration is higher. Relatively speaking, there is no cooperation between different suppliers, which reduces the communication cost and improves the debugging efficiency. Moreover, the communication between the charging communication controller and the whole vehicle controller is also changed from the conventional CAN bus communication to the communication directly connected by the TTL pin inside the controller, which is efficient and does not occupy bus resources. It can be set according to different charging standard types to realize switching between different charging protocols, and then connect the corresponding charging module according to different charging configurations, which effectively solves the technical problem of the difficulty in cooperation between the whole vehicle controller and the charging communication controller when matching different types of charging standards in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of an embodiment of a multifunctional charging control system for an electric vehicle provided by the present invention; Figure 2 A schematic diagram of the structure of an embodiment of a control module provided by the present invention; Figure 3 This is a flow chart of an embodiment of a multifunctional charging control method for an electric vehicle provided by the present invention. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0019] In the description of the embodiments of the present invention, unless otherwise specified, "multiple" means two or more than two. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" may mean: A exists alone, A and B exist at the same time, and B exists alone.

[0020] The descriptions of "first", "second", etc. involved in the embodiments of the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the technical features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] like Figure 1 The present invention provides a multifunctional charging control system 10 for an electric vehicle, comprising: A first charging module 110, a second charging module 120 and a third charging module 130 for performing an electric vehicle charging operation; The control module 140 includes a vehicle controller for monitoring and controlling the running state of the electric vehicle and a charging communication controller for completing the interaction with the charging pile to perform charging configuration, and the vehicle controller and the charging communication controller are connected through TTL pin communication; The vehicle controller is used to control the torque of the vehicle and the coordinated work of other modules of the vehicle such as the air pump, oil pump, DCDC, PDU, and to coordinate the control of related relays during charging; The charging communication controller calls the first charging module 110 when the charging configuration is configured as the national standard, or calls the second charging module 120 when it is configured as the European standard, or calls the third charging module 130 when it is configured as the Japanese standard, so as to connect to the corresponding charging pile to charge the electric vehicle.

[0023] Compared with the prior art, the multifunctional charging control system for electric vehicles provided by the present invention is configured with a control module, and integrates a vehicle controller and a charging communication controller at the same time. Only one module is used to complete the functions that could only be completed by two modules before, and the integration is higher. Relatively speaking, there is no cooperation between different suppliers, which reduces the communication cost and improves the debugging efficiency. Moreover, the communication between the charging communication controller and the vehicle controller is changed from the conventional CAN bus communication to direct TTL pin connection communication inside the controller, which is efficient and does not occupy bus resources. It can be set according to different charging standard types to realize switching between different charging protocols, and then connect the corresponding charging module according to different charging configurations, which effectively solves the technical problem of the prior art that the vehicle controller and the charging communication controller are difficult to cooperate when matching different types of charging standards.

[0024] In a possible implementation, the first charging module 110 includes: a CC control circuit and an auxiliary source detection circuit; The second charging module includes 120: a CP control circuit and a PP control circuit; The third charging module includes 130: a CS control circuit and a CP control circuit.

[0025] It should be noted that, in this embodiment, the CP control circuits in the second charging module and the third charging module can be the same circuit, and all circuits are integrated on the same circuit board. When calling different charging modules, it is only necessary to connect different circuits.

[0026] In a possible implementation, the second charging module 120 further includes: a carrier communication control circuit, which is used to exchange data with the charging pile to monitor the charging process of the electric vehicle.

[0027] In a possible implementation, the vehicle controller includes: A digital quantity input module 141 is used to collect digital input signals including gear positions and keys; A digital output module 142 is used to control the operation of other components including vehicle lights and auxiliary drive components; The analog input module 143 is used to collect analog input signals including accelerator and brake; Analog output module 144, used to control the operation of actuators including fans; The CAN communication module 145 is used to communicate with the battery management system and motor controller of the electric vehicle to distribute torque and enable auxiliary drive. It is also used to establish a communication connection between the battery management system and the charging pile to obtain the charging configuration of the charging pile and monitor the charging process in real time.

[0028] In a possible implementation, the charging communication controller includes: A charging control steering circuit 146, configured to connect the first charging module, the second charging module, or the third charging module according to a charging configuration; The electronic lock control circuit 147 is used to control the start and stop of the electronic lock of the electric vehicle; The temperature detection module 148 is used to monitor the temperature of the electric vehicle in real time.

[0029] In a possible implementation, the charging control steering circuit 146 is further configured to turn on the CAN communication module 145 when the first charging module 110 is turned on according to the charging configuration, and to turn on the electronic lock control circuit 147 when the third charging module 130 is turned on.

[0030] It can be understood that the control module provided by the present invention includes basic digital input acquisition, digital output control, analog input acquisition, analog output control, CAN communication, etc., for power on and off, torque distribution, auxiliary drive enable, logical judgment, and there is no direct connection between the modules, but they can cooperate with each other through software. The vehicle controller mainly controls and coordinates other modules on the vehicle, such as electronic control, DCAC, DCDC, so that the vehicle can drive normally. On this basis, the charging communication controller module is integrated to complete the charging control guidance, electronic lock control, and temperature detection functions, so as to realize the communication with the European standard and Japanese standard charging piles and realize the charging control function.

[0031] According to different charging standard type settings, the control module uses different hardware interfaces and software functions.

[0032] In a possible implementation, the system 10 further includes: a human-computer interaction module, which is in communication with the control module and is used to manually set the charging configuration of the charging pile and store it in the control module, so that the control module controls the electric vehicle to connect to the corresponding charging module in advance.

[0033] The present invention also provides a multifunctional charging control method for an electric vehicle, which is applied to the multifunctional charging control system 10 for an electric vehicle described in any one of the above-mentioned system items, comprising: The first charging module, the second charging module, or the third charging module is called based on the set charging configuration to enable the electric vehicle to enter a charging state.

[0034] It should be noted that the charging standard can be set and stored in the vehicle controller first or configured through the vehicle bus CAN communication message during charging. The microcontroller (master control chip) on the circuit board controls the operation of the modules on the circuit board through relevant pins. These circuits are on the same circuit board and are uniformly controlled by the microcontroller. They have no connection with each other and work in coordination with the microcontroller.

[0035] In a possible implementation, the charging configurations include: national standard GB / T, European standard CCS, and Japanese standard CHAdeMO.

[0036] like Figure 3 In a possible implementation, the above method specifically includes: When the charging configuration is the national standard GB / T, the first charging module is called, and the CAN communication module is connected at the same time to enter the GB / T charging processing logic; When the charging configuration is European standard CCS, the second charging module is called, and the electronic lock control circuit is turned on at the same time, entering the CCS charging processing logic; When the charging configuration is Japanese standard CHAdeMO, the third charging module is called, and the CAN communication module is turned on at the same time to enter the CHAdeMO charging processing logic.

[0037] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware (such as a processor, a controller, etc.) through a computer program, and the computer program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0038] The above is a detailed introduction to a multifunctional charging control system and method for an electric vehicle provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. 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 method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A multifunctional charging control system for electric vehicles, characterized in that: include: A first charging module, a second charging module and a third charging module for performing an electric vehicle charging operation; A control module, including a vehicle controller for monitoring and controlling the running state of the electric vehicle and a charging communication controller for completing interaction with a charging pile to configure charging, wherein the vehicle controller and the charging communication controller are connected via TTL pin communication; The vehicle controller is used to control the torque of the vehicle and the coordination between other modules of the vehicle including the air pump, oil pump, DCDC and PDU, as well as the control of related relays during charging; When the charging configuration is configured as the national standard, the charging communication controller calls the first charging module, or when it is configured as the European standard, the second charging module is called, or when it is configured as the Japanese standard, the third charging module is called to connect to the corresponding charging pile to charge the electric vehicle.

2. The electric vehicle multifunctional charging control system according to claim 1, characterized in that: The first charging module includes: a CC control circuit and an auxiliary source detection circuit; The second charging module includes: a CP control circuit and a PP control circuit; The third charging module includes: a CS control circuit and the CP control circuit.

3. The multifunctional charging control system for electric vehicles according to claim 2, characterized in that: The second charging module also includes: a carrier communication control circuit, which is used to exchange data with the charging pile to monitor the charging process of the electric vehicle.

4. The multifunctional charging control system for electric vehicles according to claim 1, characterized in that: The vehicle controller comprises: Digital input module, used to collect digital input signals including gear position and key; Digital output module, used to control the operation of other components including lights and auxiliary drive components; Analog input module, used to collect analog input signals including accelerator and brake; Analog output modules for controlling the operation of actuators including fans; The CAN communication module is used to communicate with the battery management system and motor controller of the electric vehicle to distribute torque and enable auxiliary drive. It is also used to establish a communication connection between the battery management system and the charging pile to obtain the charging configuration of the charging pile and monitor the charging process in real time.

5. The electric vehicle multifunctional charging control system according to claim 1, characterized in that: The charging communication controller comprises: a charging control steering circuit, used for connecting the first charging module, the second charging module or the third charging module according to the charging configuration; Electronic lock control circuit, used to control the start and stop of the electric vehicle electronic lock; The temperature detection module is used to monitor the temperature of the electric vehicle in real time.

6. The multifunctional charging control system for electric vehicles according to claim 4 or 5, characterized in that: The charging control steering circuit is also used to connect the CAN communication module when the first charging module is called, and to connect the electronic lock control circuit when the third charging module is called.

7. The electric vehicle multifunctional charging control system according to claim 1, characterized in that: The system further comprises: a human-computer interaction module, which is in communication connection with the control module and is used for manually setting the charging configuration of the charging pile and storing it in the control module, so that the control module can control the electric vehicle to connect to the corresponding charging module in advance.

8. A multifunctional charging control method for an electric vehicle, applied to the multifunctional charging control system for an electric vehicle as claimed in any one of claims 1 to 8, characterized in that: include: The first charging module, the second charging module or the third charging module is called based on the set charging configuration to enable the electric vehicle to enter a charging state.

9. The multifunctional charging control method for electric vehicles according to claim 8, characterized in that: The charging configurations include: national standard GB / T, European standard CCS and Japanese standard CHAdeMO.

10. The multifunctional charging control method for electric vehicles according to claim 9, characterized in that: The calling of the first charging module, the second charging module, or the third charging module based on the charging configuration: When the charging configuration is the national standard GB / T, the first charging module is called, and the CAN communication module is turned on at the same time, and the GB / T charging processing logic is entered; When the charging configuration is the European standard CCS, the second charging module is called, and the electronic lock control circuit is turned on at the same time, and the CCS charging processing logic is entered; When the charging configuration is the Japanese standard CHAdeMO, the third charging module is called, and the CAN communication module is turned on at the same time to enter the CHAdeMO charging processing logic.

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