Charging controller, charging system and charging method of vehicle

Abstract

The invention discloses a charging controller, a charging system and a charging method of a vehicle, the charging controller comprises a vehicle-mounted charging module used for executing a charging action and a charging communication control module used for performing charging process management and communication protocol conversion, and the charging communication control module and the vehicle-mounted charging module share a chip and a circuit; the charging communication control module comprises a charging communication transmission circuit used for being connected with a vehicle control unit so as to achieve guiding signal conversion. The vehicle-mounted charging module comprises a signal detection loop used for being connected with a charging pile so as to detect a connection signal and a guide signal. The vehicle-mounted charging module and the charging communication control module are integrated in the charging controller, and the size and the cost are reduced by sharing a chip and a circuit, so that the effect of charging control and protocol conversion which are originally realized by a vehicle-mounted charger and the charging communication controller together is realized.

Description

Technical Field

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

[0002] With the continuous development of new energy vehicle models, domestic vehicle models continue to expand overseas markets and are exported to Europe, the United States and other countries. In the existing vehicle charging system, due to the difference between foreign and domestic standards in charging protocols, if domestically produced vehicles need to achieve complete charging functions abroad, such as fast charging functions under the European standard protocol, and to share the control systems of domestic and foreign export models to the greatest extent, it is necessary to independently develop corresponding conversion controllers to achieve protocol conversion between different charging standards, thereby ensuring the complete charging function.

[0003] In the prior art, if domestic vehicles are charged using charging piles of foreign standards, a separate charging communication controller is required to perform protocol conversion and realize complete charging functions in combination with an on-board charger. Therefore, an on-board charger and a charging communication controller need to be separately installed in the vehicle, which takes up more space in the vehicle and increases the production cost of the vehicle.

[0004] Therefore, it is necessary to provide a charging controller that can reduce the occupied space and reduce the cost. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art that the equipment used to realize charging protocol conversion inside the vehicle occupies a large space and is costly, and to provide a vehicle charging controller and charging method, wherein the charging controller integrates an on-board charging module and a charging communication control module, and some chips and circuits of the on-board charging module and the charging communication control module are shared. Under the premise that the protocol conversion can also be completed, the space inside the vehicle occupied by the charging control device can be greatly reduced, and the production cost of the vehicle can be reduced.

[0006] The technical solution of the present invention provides a vehicle charging controller, comprising an on-board charging module for performing charging actions and a charging communication control module for performing charging process management and communication protocol conversion, wherein the charging communication control module shares a chip and circuit with the on-board charging module;

[0007] The charging communication control module includes a charging communication transmission circuit for connecting to a vehicle controller to realize guidance signal conversion; the on-board charging module includes a signal detection circuit for connecting to a charging pile to detect connection signals and guidance signals.

[0008] In one of the optional technical solutions, the vehicle-mounted charging module and the charging communication control module each include a first control chip for data processing, a second control chip for implementing low power consumption management, and a power management chip;

[0009] The vehicle-mounted charging module also includes a first CAN communication circuit and an electronic lock circuit;

[0010] The first CAN communication circuit, the electronic lock circuit and the signal detection circuit are respectively connected to the first control chip, the signal detection circuit is also connected to the second control chip, and the second control chip is connected to the power management chip.

[0011] In one of the optional technical solutions, the charging communication control module also includes a second CAN communication circuit connected to the first control chip and a PLC communication sub-module connected to the signal detection circuit, and the PLC communication sub-module is also connected to the first control chip.

[0012] In one of the optional technical solutions, the signal detection circuit includes a connection signal detection circuit and a guide signal detection circuit, the connection signal detection circuit is respectively connected to the first control chip and the second control chip, and the guide signal detection circuit is respectively connected to the first control chip and the second control chip.

[0013] In one of the optional technical solutions, the vehicle-mounted charging module also includes a wake-up circuit connected to the first control chip, a temperature feedback sub-module connected to the first control chip, and an auxiliary power supply sub-module, and the auxiliary power supply sub-module is respectively connected to the first control chip and the power management chip.

[0014] The technical solution of the present invention provides a charging system, including a charging pile and a vehicle controller, and also includes a charging controller of any of the above-mentioned vehicles;

[0015] The charging controller is connected to the charging pile through a first signal wiring harness, and the charging controller is connected to the vehicle controller through a second signal wiring harness.

[0016] In one of the optional technical solutions, the signal detection circuit includes a connection signal detection circuit and a guide signal detection circuit, the connection signal detection circuit is provided with a connection signal detection port, and the guide signal detection circuit is provided with a guide signal detection port;

[0017] The charging pile is provided with a first signal port and a second signal port;

[0018] The first signal harness includes a connection signal sub-harness and a guide signal sub-harness. The connection signal sub-harness connects the connection signal detection port and the first signal port, and the guide signal sub-harness connects the guide signal detection port and the second signal port.

[0019] In one of the optional technical solutions, the vehicle-mounted charging module further includes an electronic lock circuit, and the electronic lock circuit is provided with a driving positive electrode port, a driving negative electrode port, a detection positive electrode port, and a detection negative electrode port;

[0020] The charging pile is provided with a first electronic lock port, a second electronic lock port, a third electronic lock port and a fourth electronic lock port;

[0021] The first signal harness includes a driving positive sub-harness, a driving negative sub-harness, a detection positive sub-harness and a detection negative sub-harness. The driving positive sub-harness connects the driving positive port and the first electronic lock port, the driving negative sub-harness connects the driving negative port and the second electronic lock port, the detection positive sub-harness connects the detection positive port and the third electronic lock port, and the detection negative sub-harness connects the detection negative port and the fourth electronic lock port.

[0022] In one of the optional technical solutions, the charging communication transmission circuit is provided with a communication transmission port;

[0023] The vehicle charging module further includes a first CAN communication circuit, wherein the first CAN communication circuit is provided with a CAN high port and a CAN low port;

[0024] The vehicle controller is provided with a transmission port, a first CAN port and a second CAN port;

[0025] The second signal wiring harness includes a communication transmission sub-wiring harness, a CAN high-order sub-wiring harness and a CAN low-order sub-wiring harness. The communication transmission sub-wiring harness connects the communication transmission port and the transmission port, the CAN high-order sub-wiring harness connects the CAN high-order port and the first CAN port, and the CAN low-order sub-wiring harness connects the CAN low-order port and the second CAN port.

[0026] In one of the optional technical solutions, the vehicle-mounted charging module further includes a wake-up circuit, the wake-up circuit is provided with a wake-up port, and the charging controller is further provided with a ground port;

[0027] The vehicle controller is provided with a positive terminal and a negative terminal;

[0028] The second signal harness includes a positive sub-harness and a negative sub-harness, the positive sub-harness connects the wake-up port and the positive port, and the negative sub-harness connects the ground port and the negative port.

[0029] The technical solution of the present invention provides a charging method, which is applied to a charging controller of any of the above-mentioned vehicles, comprising:

[0030] Receiving charging request information from a charging pile, and determining whether a wake-up condition of the vehicle-mounted charging module is met according to the charging request information;

[0031] If the wake-up condition of the on-board charging module is met, the on-board charging module is woken up, and the on-board charging module is controlled to wake up the vehicle controller through the charging communication transmission circuit;

[0032] Determining whether the guidance signal in the charging request information satisfies a first charging condition or a second charging condition;

[0033] If the first charging condition is met, the vehicle charging module communicates with the vehicle controller to control the vehicle to enter a slow charging process;

[0034] If the second charging condition is met, a protocol conversion is established between the charging pile and the vehicle controller through the charging communication control module to control the vehicle to enter the fast charging process.

[0035] In one of the optional technical solutions, judging whether the wake-up condition of the vehicle-mounted charging module is met according to the charging request information specifically includes:

[0036] Extracting a charging gun connection signal and a guidance signal from the charging request information;

[0037] Performing signal detection on the charging gun connection signal and the guide signal;

[0038] If a low-level valid signal is detected in the charging gun connection signal and a PWM signal is detected in the guide signal, the wake-up condition of the on-board charging module is met.

[0039] In one of the optional technical solutions, if the first charging condition is met, communicating with the vehicle controller through the on-board charging module specifically includes:

[0040] Calculating the duty cycle of the pilot signal, and determining whether the duty cycle falls within a first ratio range;

[0041] If the duty cycle falls within the first ratio range, controlling the on-board charging module to perform CAN communication with the vehicle controller;

[0042] Close the electronic lock and the vehicle-side charging switch to control the vehicle-mounted charging module to enter the AC charging mode;

[0043] The vehicle controller is requested to provide a charging current value via the vehicle-mounted charging module.

[0044] In one of the optional technical solutions, if the second charging condition is met, a protocol conversion is established between the charging pile and the vehicle controller through the charging communication control module, specifically including:

[0045] Calculating the duty cycle of the pilot signal, and determining whether the duty cycle falls within a second ratio range;

[0046] If the duty cycle falls within the second ratio range, the on-board charging module is controlled to perform CAN communication with the vehicle controller, and the charging communication control module is controlled to establish PLC communication with the charging pile;

[0047] Closing the electronic lock and the vehicle-side charging switch to control the vehicle-mounted charging module to enter a DC charging mode;

[0048] The charging communication control module is used to perform protocol conversion between CAN communication and PLC communication between the vehicle controller and the charging pile.

[0049] The above technical solution has the following beneficial effects:

[0050] The vehicle charging controller provided by the present invention integrates an on-board charging module and a charging communication control module, and some chips and circuits of the on-board charging module and the charging communication control module are shared, so the housing, wiring harness and connector of the charging communication controller can be omitted. The charging controller of the charging communication control module is integrated based on the chip and circuit of the on-board charging module, and only the charging communication transmission circuit needs to be added to realize the functions of the on-board charger and the charging communication controller at the same time. Therefore, under the premise of not affecting the domestic vehicles to use foreign charging protocols for complete charging functions, the space occupied by the on-board charging module and the charging communication control module in the space layout of the whole vehicle can be greatly reduced through circuit integration and chip sharing, thereby effectively reducing the production cost of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0052] Figure 1 A schematic diagram of the structure of a charging system provided by an embodiment of the present invention;

[0053] Figure 2 A schematic diagram of the structure of a vehicle charging controller provided by an embodiment of the present invention;

[0054] Figure 3 A wiring diagram of a charging system provided by an embodiment of the present invention;

[0055] Figure 4 A flowchart of a charging method provided by an embodiment of the present invention;

[0056] Figure 5 A structural diagram of an electronic device provided by an embodiment of the present invention.

[0057] Reference numerals in the figures:

[0058] 10. Charging controller; 101. Connection signal detection port; 102. Guidance signal detection port; 103. Drive positive port; 104. Drive negative port; 105. Detect positive port; 106. Detect negative port; 107. Communication transmission port; 108. CAN high port; 109. CAN low port; 1010. Wake-up port; 1011. Ground port;

[0059] 100, vehicle charging module; 11, signal detection circuit; 111, connection signal detection circuit; 112, guidance signal detection circuit; 12, first CAN communication circuit; 13, electronic lock circuit; 14, wake-up circuit; 15, temperature feedback submodule; 16, auxiliary power submodule;

[0060] 200, charging communication control module; 21, second CAN communication circuit; 22, charging communication transmission circuit; 23, PLC communication submodule;

[0061] 01. First control chip; 02. Second control chip; 03. Power management chip;

[0062] 300, first signal harness; 31, connection signal harness; 32, guide signal harness; 33, drive positive harness; 34, drive negative harness; 35, detect positive harness; 36, detect negative harness;

[0063] 400, second signal wiring harness; 41, communication transmission sub-wiring harness; 42, CAN high sub-wiring harness; 43, CAN low sub-wiring harness; 44, positive sub-wiring harness; 45, negative sub-wiring harness;

[0064] 500, vehicle controller; 51, transmission port; 52, first CAN port; 53, second CAN port; 54, positive port; 55, negative port;

[0065] 600, charging pile; 61, first signal port; 62, second signal port; 63, first electronic lock port; 64, second electronic lock port; 65, third electronic lock port; 66, fourth electronic lock port. DETAILED DESCRIPTION

[0066] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0067] In the following, CAN (Controller Area Network) communication refers to local area network communication, PLC (Power Line Communication) communication refers to power line communication, and PWM (Pulse Width Modulation) signal refers to pulse width modulation signal.

[0068] like Figure 1 FIG. 1 is a vehicle charging controller 01 provided by an embodiment of the present invention, comprising an on-board charging module 100 for executing charging actions and a charging communication control module 200 for performing charging process management and communication protocol conversion. Figure 2 As shown, the charging communication control module 200 shares chips and circuits with the on-board charging module 100; the charging communication control module 200 includes a charging communication transmission circuit 22 for connecting to the vehicle controller to realize the guidance signal conversion; the on-board charging module 100 includes a signal detection circuit 11 for connecting to the charging pile 600 to detect the connection signal and the guidance signal.

[0069] Among them, the on-board charging module 100 is responsible for realizing the function of the on-board charger (OBC) in the prior art, and the charging communication control module 200 is responsible for realizing the function of the charging communication controller (EVCC) in the prior art, and is also responsible for the function of some protocol converters in the prior art to realize the conversion between different protocols. The present invention integrates the charging communication controller into the original charging system to form a new type of charging controller, which can reduce a large amount of hardware, wiring harnesses, connectors and ports. By adopting the charging controller solution of the present invention, the housing and some chips of the charging communication controller can be no longer set, and the interfaces in the charging system can be reduced, thereby improving the overall stability of the charging architecture in the vehicle, reducing production costs and reducing the space occupied by the charging system in the vehicle, and reducing the difficulty of assembly and disassembly and maintenance of the charging controller.

[0070] After being equipped with the charging controller provided by the embodiment of the present invention, domestically produced vehicles can adapt to charging piles of various protocols in different countries through the on-board charging module 100 and the charging communication control module 200 therein to achieve universal charging. For example, when charging a vehicle through a European standard charging pile, PLC communication is generally used, while domestically produced vehicles use CAN communication when charging. If only a low-voltage AC slow charge is performed, it is only necessary to make a corresponding request to the vehicle controller through the on-board charging module 100; if a high-voltage DC fast charge is required, the PLC communication information needs to be unpacked, signal extracted, reorganized and packaged through the charging communication control module 200 to convert the PLC communication signal into the corresponding CAN communication signal, thereby ensuring that the vehicle controller can receive instructions to allow the vehicle to enter the fast charging process and receive high-current DC from the European standard charging pile.

[0071] The charging controller provided in the embodiment of the present invention has the same result as that of the protocol conversion in the prior art, and is mainly implemented by using different charging controller structures. Since the chips and circuits in the on-board charger can be reused in the charging communication controller, the charging controller integrating the on-board charging module 100 and the charging communication control module 200 can respectively perform the functions of the on-board charger and the charging communication controller with the same architecture, except that the software part needs to be redesigned, and by adding a connection line with the whole vehicle controller, such as the charging communication transmission circuit 22 to realize the signal transmission between the charging communication control module 200 and the whole vehicle controller, and the signal detection circuit 11 to realize the signal transmission between the on-board charging module 100 and the charging pile, the charging communication control module 200 directly reuses most of the original chips and circuits of the on-board charging module 100, and realizes functional integration by changing the information processing logic, and no longer needs to set up a separate charging communication controller or protocol converter, which increases the available space inside the vehicle and effectively reduces the manufacturing cost of the vehicle charging system.

[0072] The charging controller of the vehicle provided by the present invention integrates the on-board charging module 100 and the charging communication control module 200, and the on-board charging module 100 and the charging communication control module 200 share some chips and circuits, which can omit the housing, wiring harness and connector of the charging communication controller. The charging controller of the charging communication control module 200 is integrated based on the chip and circuit of the on-board charging module 100. Only the charging communication transmission circuit 22 needs to be added to realize the functions of the on-board charger and the charging communication controller at the same time. Under the premise of not affecting the domestic vehicles to use foreign charging protocols for full-function charging, the space occupied by the on-board charging module 100 and the charging communication control module 200 in the space layout of the whole vehicle can be greatly reduced through circuit integration and chip sharing, thereby effectively reducing the production cost of the vehicle.

[0073] In one embodiment, Figure 2 As shown, the vehicle charging module 100 and the charging communication control module 200 both include a first control chip 01 for data processing, a second control chip 02 for achieving low power consumption management, and a power management chip 03;

[0074] The vehicle charging module 100 further includes a first CAN communication circuit 12 and an electronic lock circuit 13 .

[0075] The first CAN communication circuit 12 , the electronic lock circuit 13 and the signal detection circuit 11 are respectively connected to the first control chip 01 . The signal detection circuit 11 is also connected to the second control chip 02 . The second control chip 02 is connected to the power management chip 03 .

[0076] The charging communication controller in the prior art includes a first control chip 01, a second control chip 02, a power management chip 03 and a PLC communication submodule 23, and is internally and externally connected through a first CAN communication circuit 12, an electronic lock circuit 13, a signal detection circuit 11 and a charging communication transmission circuit 22 to achieve complete functions. In addition to the PLC communication submodule 23 and the charging communication transmission circuit 22, the vehicle-mounted charger in the prior art generally has the aforementioned chips and circuits, and the charging communication controller and the vehicle-mounted charger also need to be connected to each other through a CAN communication circuit. In this embodiment, the internal architecture of the vehicle-mounted charging module 100 retains all the functions of the vehicle-mounted charger. Therefore, the repeated parts in the shared vehicle-mounted charging module 100 and the charging communication control module 200 can be shared to ensure that the vehicle-mounted charging module 100 and the charging communication control module 200 are fully functional.

[0077] In one embodiment, Figure 2 As shown, the charging communication control module 200 further includes a second CAN communication circuit 21 connected to the first control chip 01 , and a PLC communication submodule 23 connected to the signal detection circuit 11 , and the PLC communication submodule 23 is also connected to the first control chip 01 .

[0078] In this embodiment, the PLC communication submodule 23 is used to realize PLC communication with the charging pile, but the on-board charger does not have this function, so it needs to be added additionally. The second CAN communication loop 21 can ensure the signal transmission stability when the on-board charging module 100 and the charging communication control module 200 work at the same time, and can also ensure the effectiveness of communication with different controllers in the whole vehicle. The charging communication transmission circuit 22 is mainly used to transmit the guide signal to the whole vehicle controller to ensure that the whole vehicle controller can receive the fast charging request instruction contained in the guide signal.

[0079] In one embodiment, the signal detection circuit 11 includes a connection signal detection circuit 111 and a guidance signal detection circuit 112, the connection signal detection circuit 111 is connected to the first control chip 01 and the second control chip 02 respectively, and the guidance signal detection circuit 112 is connected to the first control chip 01 and the second control chip 02 respectively.

[0080] In this embodiment, a low-pass filter is arranged between the signal detection circuit 11 and the first control chip 11, and a filter transformer is arranged between the PLC communication submodule 23 and the signal detection circuit 11. The signal detection circuit 11 is used to realize signal sampling and signal forwarding of the connection signal and the guide signal.

[0081] In one embodiment, Figure 2 As shown, the on-board charging module 100 also includes a wake-up circuit 14 connected to the first control chip 01, a temperature feedback submodule 15 connected to the first control chip 01, and an auxiliary power submodule 16, and the auxiliary power submodule 16 is respectively connected to the first control chip 01 and the power management chip 03.

[0082] In this embodiment, the charging controller also includes a DC-DC conversion module, which is connected to the first control chip 01. The temperature feedback submodule 15 is mainly used to detect the temperature of the air and the DC-DC conversion module. The auxiliary power submodule 16 can provide low-voltage auxiliary power supply for the charging controller and can also output low-voltage voltage to the vehicle controller. The vehicle charging module 100 receives the wake-up signal of the charging gun through the wake-up circuit 14 to improve the overall function of the vehicle charging module 100.

[0083] like Figure 1 As shown, a charging system provided by an embodiment of the present invention includes a charging pile 600 and a vehicle controller 500, and also includes a charging controller 10 of any of the above-mentioned vehicles.

[0084] The charging controller 10 is connected to the charging pile 600 through the first signal harness 300 , and the charging controller 10 is connected to the vehicle controller 500 through the second signal harness 400 .

[0085] The charging controller 10 in any of the above embodiments is used in a charging system, and the charging controller 10 integrates the vehicle charging module 100 and the charging communication control module 200, reducing the number of wiring interfaces. In the charging system, the charging controller 10 only needs to be connected to the charging pile 600 and the vehicle controller 500 through the first signal harness 300 and the second signal harness 400, respectively, reducing the number of harnesses.

[0086] In existing vehicles, if the charging pile 600 is a national standard charging pile, protocol conversion is required to allow the vehicle to enter the fast charging process through the charging pile 600. The charging system provided in this embodiment can realize complete charging control functions and protocol conversion functions when a charging controller is set in the vehicle. The charging controller collects, converts and identifies the signal of the charging pile, and achieves the effect of complete protocol conversion and charging control with less space occupation and production cost, thereby reducing the overall cost of vehicles suitable for export.

[0087] In one embodiment, Figure 3 As shown, the signal detection circuit 11 includes a connection signal detection circuit 111 and a guide signal detection circuit 112. The connection signal detection circuit 111 is provided with a connection signal detection port 101, and the guide signal detection circuit 112 is provided with a guide signal detection port 102;

[0088] The charging pile 600 is provided with a first signal port 61 and a second signal port 62;

[0089] The first signal harness 300 includes a connection signal sub-harness 31 and a guide signal sub-harness 32 . The connection signal sub-harness 31 connects the connection signal detection port 101 and the first signal port 61 , and the guide signal sub-harness 32 connects the guide signal detection port 102 and the second signal port 62 .

[0090] In an embodiment of the present application, when the charging controller 10 is connected to the charging pile through the first signal harness 300, the charging pile 600 sends a connection signal from the first signal port 61 through the connection signal sub-harness 31 to the connection signal detection circuit 111 for detection; at the same time, the charging pile 600 sends a guide signal from the second signal port 62 through the guide signal sub-harness 32 to the guide signal detection circuit 112 for detection.

[0091] In one embodiment, Figure 3 As shown, the vehicle charging module 100 further includes an electronic lock circuit 13, which is provided with a driving positive electrode port 103, a driving negative electrode port 104, a detection positive electrode port 105 and a detection negative electrode port 106;

[0092] The charging pile 600 is provided with a first electronic lock port 63, a second electronic lock port 64, a third electronic lock port 65 and a fourth electronic lock port 66;

[0093] The first signal harness 300 includes a driving positive sub-harness 33, a driving negative sub-harness 34, a detection positive sub-harness 35 and a detection negative sub-harness 36. The driving positive sub-harness 33 connects the driving positive port 103 and the first electronic lock port 63, the driving negative sub-harness 34 connects the driving negative port 104 and the second electronic lock port 64, the detection positive sub-harness 35 connects the detection positive port 105 and the third electronic lock port 65, and the detection negative sub-harness 36 connects the detection negative port 106 and the fourth electronic lock port 66.

[0094] In an embodiment of the present application, the electronic lock circuit 13 is used to control the state detection and state switching of the charging gun electronic lock, wherein the driving positive sub-harness 33 and the driving negative sub-harness 34 are used to transmit the electronic lock driving signal, and the detection positive sub-harness 35 and the detection negative sub-harness 36 are used to transmit the electronic lock detection state signal.

[0095] In one embodiment, Figure 3 As shown, the charging communication transmission circuit 22 is provided with a communication transmission port 107;

[0096] The vehicle charging module 100 further includes a first CAN communication circuit 12 , and the first CAN communication circuit 12 is provided with a CAN high port 108 and a CAN low port 109 ;

[0097] The vehicle controller 500 is provided with a transmission port 51, a first CAN port 52 and a second CAN port 53;

[0098] The second signal harness 400 includes a communication transmission sub-harness 41, a CAN high-order sub-harness 42 and a CAN low-order sub-harness 43. The communication transmission sub-harness 41 connects the communication transmission port 107 and the transmission port 51, the CAN high-order sub-harness 42 connects the CAN high-order port 108 and the first CAN port 52, and the CAN low-order sub-harness 43 connects the CAN low-order port 109 and the second CAN port 53.

[0099] In the embodiment of the present application, the communication transmission sub-harness 41 is used to transmit the communication signal between the charging controller 10 and the vehicle controller 500, and the CAN high-order sub-harness 42 and the CAN low-order sub-harness 43 are used to transmit the CAN high-order signal and the CAN low-order signal, respectively, thereby realizing CAN communication between the charging controller 10 and the vehicle controller 500.

[0100] In one embodiment, Figure 3 As shown, the vehicle charging module 100 further includes a wake-up circuit 14, the wake-up circuit 14 is provided with a wake-up port 1010, and the charging controller 10 is further provided with a grounding port 1011;

[0101] The vehicle controller 500 is provided with a positive terminal 54 and a negative terminal 55;

[0102] The second signal harness 400 includes a positive sub-harness 44 and a negative sub-harness 45 . The positive sub-harness 44 connects the wake-up port 1010 and the positive port 54 , and the negative sub-harness 45 connects the ground port 1011 and the negative port 55 .

[0103] In the embodiment of the present application, the positive sub-harness 44 is used to transmit a wake-up signal to the vehicle charging module 100 , and the negative sub-harness 45 is used to ground the charging controller 10 .

[0104] like Figure 4 A charging method provided by an embodiment of the present invention is shown, which is applied to a charging controller of any of the above-mentioned vehicles, comprising:

[0105] Step S101: receiving charging request information from a charging pile, and determining whether a wake-up condition of the vehicle-mounted charging module is met according to the charging request information;

[0106] Step S102: If the wake-up condition of the on-board charging module is met, the on-board charging module is woken up, and the on-board charging module is controlled to wake up the vehicle controller through the charging communication transmission circuit;

[0107] Step S103: determining whether the guidance signal in the charging request information satisfies the first charging condition or the second charging condition;

[0108] Step S104: If the first charging condition is met, the vehicle-mounted charging module communicates with the vehicle controller to control the vehicle to enter a slow charging process;

[0109] Step S105: If the second charging condition is met, a protocol conversion is established between the charging pile and the vehicle controller through the charging communication control module to control the vehicle to enter the fast charging process.

[0110] The charging method provided in this embodiment is applied to the charging controller or charging system of the vehicle provided in any of the above embodiments to control the operation of the charging controller, determine the charging mode, and send a corresponding request to the vehicle controller so that the vehicle enters the appropriate charging process. The charging pile sends a guidance signal for informing the charging pile of the charging demand and charging status of the vehicle, and the guidance signal includes the duty cycle and voltage value of the charging voltage output by the charging pile. The user swipes the card / scans the code. The charging pile outputs a guidance signal to the charging communication control module. After receiving it, the charging communication control module sends a guidance signal to the on-board charging module through the CAN communication loop. The on-board charging module determines the charging status according to the duty cycle and voltage value of the charging voltage, and the on-board charging module controls the vehicle to enter the corresponding charging process. If it is judged to be a fast charging state, it is necessary to further determine whether protocol conversion is required. If protocol conversion is required, it is necessary to perform signal conversion through the charging communication control module, including unpacking, signal extraction, reorganization and packaging, to achieve effective communication between different protocols.

[0111] In one embodiment, the arrangement S101 specifically includes:

[0112] Extracting a charging gun connection signal and a guidance signal from the charging request information;

[0113] Performing signal detection on the charging gun connection signal and the guide signal;

[0114] If a low-level valid signal is detected in the charging gun connection signal and a PWM signal is detected in the guide signal, the wake-up condition of the on-board charging module is met.

[0115] In this embodiment, the charging gun connection signal and the guide signal are used to determine whether the charging gun inserted into the vehicle is in an activated state, so as to determine whether the on-board charging module needs to be awakened, thereby avoiding false triggering due to the insertion of an unactivated charging gun. When a low-level valid signal is detected in the charging gun connection signal and a PWM signal is detected in the guide signal, it is considered that the charging gun is successfully connected to the vehicle and the on-board charging module is effectively awakened. At this time, the on-board charging module is awakened, and the vehicle enters the charging state.

[0116] In one embodiment, step S104 specifically includes:

[0117] Calculating the duty cycle of the pilot signal, and determining whether the duty cycle falls within a first ratio range;

[0118] If the duty cycle falls within the first ratio range, controlling the on-board charging module to perform CAN communication with the vehicle controller;

[0119] Close the electronic lock and the vehicle-side charging switch to control the vehicle-mounted charging module to enter the AC charging mode;

[0120] The vehicle controller is requested to provide a charging current value via the vehicle-mounted charging module.

[0121] Furthermore, step S105 specifically includes:

[0122] Calculating the duty cycle of the pilot signal, and determining whether the duty cycle falls within a second ratio range;

[0123] If the duty cycle falls within the second ratio range, the on-board charging module is controlled to perform CAN communication with the vehicle controller, and the charging communication control module is controlled to establish PLC communication with the charging pile;

[0124] Closing the electronic lock and the vehicle-side charging switch to control the vehicle-mounted charging module to enter a DC charging mode;

[0125] The charging communication control module is used to perform protocol conversion between CAN communication and PLC communication between the vehicle controller and the charging pile.

[0126] In this embodiment, the guidance signal also carries the charging voltage value information. When judging the first charging condition and the second charging condition, the duty cycle ratio range and voltage value range of the first charging condition and the second charging condition need to be met at the same time. As a specific example, when the on-board charging module calculates the duty cycle to be 8% to 97% based on the guidance signal, it is determined that the current charging is AC charging, and then the voltage value is determined to determine that the current charging mode needs to be entered, and the vehicle controller enters the slow charging process. When the on-board charging module calculates the duty cycle to be 3% to 7% based on the guidance signal, it is determined that the current charging is DC charging, and then the voltage value is determined to determine that the current charging mode needs to be entered, and the vehicle controller enters the fast charging process.

[0127] like Figure 5 The figure shows a schematic diagram of the hardware structure of an electronic device of the present invention, including a memory 502, a processor 501 and an electronic device program on the memory 502, and the processor 501 executes the electronic device program to implement the steps of the charging method of the charging controller of the vehicle of any of the above embodiments.

[0128] Figure 5 A processor 501 is taken as an example.

[0129] The electronic device may further include: an input device 503 and a display device 504 .

[0130] The processor 501, the memory 502, the input device 503 and the display device 504 may be connected via a bus or other means, and the figure takes the connection via a bus as an example.

[0131] The memory 502 is a non-volatile electronic device readable storage medium, which can be used to store non-volatile software programs, non-volatile electronic device executable programs and modules, such as program instructions / modules corresponding to the charging method of the vehicle charging controller in the embodiment of the present application. The processor 501 executes various functional applications and data processing by running the non-volatile software programs, instructions and modules stored in the memory 502, that is, realizing the charging method of the vehicle charging controller in the above embodiment.

[0132] The memory 502 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the charging method of the vehicle's charging controller, etc. In addition, the memory 502 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the memory 502 may optionally include a memory remotely arranged relative to the processor 501, and these remote memories may be connected to a device for executing the charging method of the vehicle's charging controller via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0133] The input device 503 may receive a user click input, and generate a signal input related to a user setting of a charging method and a function control of a charging controller of a vehicle. The display device 504 may include a display device such as a display screen.

[0134] The one or more modules are stored in the memory 502, and when executed by the one or more processors 501, the charging method of the vehicle charging controller in any of the above method embodiments is executed.

[0135] When in operation, the electronic device disclosed in the present invention can execute all the steps of the charging method of the above-mentioned vehicle charging controller. By sharing some chips and circuits of the on-board charging module and the charging communication control module, the housing, wiring harness and connector of the charging communication controller are omitted, thereby realizing the functions of the on-board charger and the charging communication controller.

[0136] An embodiment of the present invention provides an electronic device readable storage medium, which stores an electronic device program / instruction. When the electronic device program / instruction is executed by the processor 501, all steps of the charging method of the vehicle charging controller as described above are implemented.

[0137] In the context of the present disclosure, a storage medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or apparatus. The storage medium may be a machine-readable signal medium or a machine-readable storage medium. Alternatively, the storage medium may be a non-temporary electronic device readable storage medium, for example, a non-temporary electronic device readable storage medium may be a ROM, a random access memory (Random Access Memory, RAM), a compact disc read-only memory (Compact Disc ROM, CD-ROM), a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0138] An embodiment of the present invention provides an electronic device program product, including an electronic device program / instruction, which, when executed by a processor, implements the steps of the charging method of the vehicle charging controller as described above.

[0139] By running the above-mentioned electronic device program product, all steps of the charging method of the vehicle charging controller as described above can be executed. By sharing some chips and circuits of the on-board charging module and the charging communication control module, the housing, wiring harness and connector of the charging communication controller are omitted, thereby realizing the functions of the on-board charger and the charging communication controller.

[0140] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A vehicle charging controller, characterized in that: It comprises an on-vehicle charging module (100) for executing a charging action and a charging communication control module (200) for performing charging process management and communication protocol conversion, wherein the charging communication control module (200) shares a chip and circuit with the on-vehicle charging module (100); The charging communication control module (200) comprises a charging communication transmission circuit (22) for connecting to a vehicle controller (500) to realize guidance signal conversion; and the on-board charging module (100) comprises a signal detection circuit (11) for connecting to a charging pile (600) to detect a connection signal and a guidance signal.

2. The vehicle charging controller according to claim 1, characterized in that: The vehicle-mounted charging module (100) and the charging communication control module (200) both comprise a first control chip (01) for performing data processing, a second control chip (02) for implementing low power consumption management, and a power management chip (03); The vehicle-mounted charging module (100) further comprises a first CAN communication circuit (12) and an electronic lock circuit (13); The first CAN communication circuit (12), the electronic lock circuit (13) and the signal detection circuit (11) are respectively connected to the first control chip (01), the signal detection circuit (11) is also connected to the second control chip (02), and the second control chip (02) is connected to the power management chip (03).

3. The vehicle charging controller according to claim 2, characterized in that: The charging communication control module (200) further comprises a second CAN communication circuit (21) connected to the first control chip (01) and a PLC communication submodule (23) connected to the signal detection circuit (11); the PLC communication submodule (23) is also connected to the first control chip (01).

4. The vehicle charging controller according to claim 3, characterized in that: The signal detection circuit (11) comprises a connection signal detection circuit (111) and a guidance signal detection circuit (112); the connection signal detection circuit (111) is connected to the first control chip (01) and the second control chip (02) respectively; and the guidance signal detection circuit (112) is connected to the first control chip (01) and the second control chip (02) respectively.

5. The vehicle charging controller according to any one of claims 2 to 4, characterized in that: The on-board charging module (100) further comprises a wake-up circuit (14) connected to the first control chip (01), a temperature feedback submodule (15) connected to the first control chip (01), and an auxiliary power submodule (16), wherein the auxiliary power submodule (16) is respectively connected to the first control chip (01) and the power management chip (03).

6. A charging system, characterized in that: It comprises a charging pile (600) and a vehicle controller (500), and also comprises a vehicle charging controller (10) as claimed in any one of claims 1 to 5; The charging controller (10) is connected to the charging pile (600) via a first signal harness (300), and the charging controller (10) is connected to the vehicle controller (500) via a second signal harness (400).

7. The charging system according to claim 6, characterized in that: The signal detection circuit (11) comprises a connection signal detection circuit (111) and a guide signal detection circuit (112); the connection signal detection circuit (111) is provided with a connection signal detection port (101); and the guide signal detection circuit (112) is provided with a guide signal detection port (102); The charging pile (600) is provided with a first signal port (61) and a second signal port (62); The first signal harness (300) comprises a connection signal sub-harness (31) and a guide signal sub-harness (32), wherein the connection signal sub-harness (31) connects the connection signal detection port (101) and the first signal port (61), and the guide signal sub-harness (32) connects the guide signal detection port (102) and the second signal port (62).

8. The charging system according to claim 6, characterized in that: The vehicle-mounted charging module (100) further comprises an electronic lock circuit (13), wherein the electronic lock circuit (13) is provided with a driving positive electrode port (103), a driving negative electrode port (104), a detection positive electrode port (105) and a detection negative electrode port (106); The charging pile (600) is provided with a first electronic lock port (63), a second electronic lock port (64), a third electronic lock port (65) and a fourth electronic lock port (66); The first signal harness (300) comprises a driving positive pole harness (33), a driving negative pole harness (34), a detecting positive pole harness (35) and a detecting negative pole harness (36); the driving positive pole harness (33) is connected to the driving positive pole port (103) and the first electronic lock port (63); the driving negative pole harness (34) is connected to the driving negative pole port (104) and the second electronic lock port (64); the detecting positive pole harness (35) is connected to the detecting positive pole port (105) and the third electronic lock port (65); and the detecting negative pole harness (36) is connected to the detecting negative pole port (106) and the fourth electronic lock port (66).

9. The charging system according to any one of claims 6 to 8, characterized in that: The charging communication transmission circuit (22) is provided with a communication transmission port (107); The vehicle-mounted charging module (100) further comprises a first CAN communication circuit (12), wherein the first CAN communication circuit (12) is provided with a CAN high-order port (108) and a CAN low-order port (109); The vehicle controller (500) is provided with a transmission port (51), a first CAN port (52) and a second CAN port (53); The second signal harness (400) comprises a communication transmission sub-harness (41), a CAN high-order sub-harness (42) and a CAN low-order sub-harness (43); the communication transmission sub-harness (41) connects the communication transmission port (107) and the transmission port (51); the CAN high-order sub-harness (42) connects the CAN high-order port (108) and the first CAN port (52); and the CAN low-order sub-harness (43) connects the CAN low-order port (109) and the second CAN port (53).

10. The charging system according to any one of claims 6 to 8, characterized in that: The on-board charging module (100) further comprises a wake-up circuit (14), the wake-up circuit (14) is provided with a wake-up port (1010), and the charging controller (10) is further provided with a grounding port (1011); The vehicle controller (500) is provided with a positive electrode port (54) and a negative electrode port (55); The second signal harness (400) includes a positive sub-harness (44) and a negative sub-harness (45), wherein the positive sub-harness (44) connects the wake-up port (1010) and the positive port (54), and the negative sub-harness (45) connects the ground port (1011) and the negative port (55).

11. A charging method, characterized in that: A charging controller for a vehicle according to any one of claims 1 to 5, comprising: Receiving charging request information from a charging pile, and determining whether a wake-up condition of the vehicle-mounted charging module is met according to the charging request information; If the wake-up condition of the on-board charging module is met, the on-board charging module is woken up, and the on-board charging module is controlled to wake up the vehicle controller through the charging communication transmission circuit; Determining whether the guidance signal in the charging request information satisfies a first charging condition or a second charging condition; If the first charging condition is met, the vehicle charging module communicates with the vehicle controller to control the vehicle to enter a slow charging process; If the second charging condition is met, a protocol conversion is established between the charging pile and the vehicle controller through the charging communication control module to control the vehicle to enter the fast charging process.

12. The charging method according to claim 11, characterized in that: The determining, according to the charging request information, whether a wake-up condition of the vehicle-mounted charging module is met specifically includes: Extracting a charging gun connection signal and a guidance signal from the charging request information; Performing signal detection on the charging gun connection signal and the guide signal; If a low-level valid signal is detected in the charging gun connection signal and a PWM signal is detected in the guide signal, the wake-up condition of the on-board charging module is met.

13. The charging method according to claim 11, characterized in that: If the first charging condition is met, communicating with the vehicle controller through the on-board charging module specifically includes: Calculating the duty cycle of the pilot signal, and determining whether the duty cycle falls within a first ratio range; If the duty cycle falls within the first ratio range, controlling the on-board charging module to perform CAN communication with the vehicle controller; Close the electronic lock and the vehicle-side charging switch to control the vehicle-mounted charging module to enter the AC charging mode; The vehicle controller is requested to provide a charging current value via the vehicle-mounted charging module.

14. The charging method according to claim 11, characterized in that: If the second charging condition is met, a protocol conversion is established between the charging pile and the vehicle controller through the charging communication control module, specifically including: Calculating the duty cycle of the pilot signal, and determining whether the duty cycle falls within a second ratio range; If the duty cycle falls within the second ratio range, the on-board charging module is controlled to perform CAN communication with the vehicle controller, and the charging communication control module is controlled to establish PLC communication with the charging pile; Closing the electronic lock and the vehicle-side charging switch to control the vehicle-mounted charging module to enter a DC charging mode; The charging communication control module is used to perform protocol conversion between CAN communication and PLC communication between the vehicle controller and the charging pile.

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