A plug-and-charge charging method

Abstract

The embodiment of the present invention discloses a plug-and-charge charging method, which realizes the interaction between the electric vehicle and the charging pile by controlling the action of the switch and adjusting PWM, thereby realizing the authorization of the electric vehicle to realize the plug-and-charge function at the charging pile. It should be noted that this method can be applied to the charging pile authority management in the fields of private charging piles, brand-exclusive charging piles, etc. The authorized electric vehicle can obtain the execution logic of the plug-and-charge control and the corresponding password parsing method through factory built-in, APP writing, OTA upgrade, etc., without adding hardware and satisfying the existing AC charging control timing logic, on the basis of compatibility with the existing charging interaction logic, key verification is realized between the charging pile and the electric vehicle, so that the vehicle can achieve a plug-and-charge effect when charging through the AC charging pile, thereby optimizing the charging experience.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle charging, and in particular to a plug-and-charge charging method. Background Art

[0002] In the existing technology, in the interaction scenario between DC charging piles and vehicles, the vehicle VIN code can be read through CAN communication to identify the user and thus realize the plug-and-charge solution; however, when charging through AC charging piles, due to the lack of a two-way communication protocol, the above-mentioned plug-and-charge effect cannot be easily achieved; the user needs to authorize charging by manually swiping a card, Bluetooth pairing or mobile phone APP operation before starting charging. The cumbersome operation reduces the user's charging experience; for example, CN113602136A proposes a method of interacting with the charging pile through an on-board Bluetooth module, and realizing automatic permission identification through radio frequency technology to realize interaction between the vehicle and the charging gun. However, adding Bluetooth, radio frequency devices or WiFi pairing modules increases the cost of vehicles and charging piles, and there is a problem of poor universality between different car models and charging piles, which is not conducive to promotion and application. Summary of the Invention

[0003] In order to solve the existing technical problems, the embodiments of the present invention provide a plug-and-charge charging method. Without adding hardware and satisfying the existing AC charging control timing logic, it realizes key verification between the charging pile and the electric vehicle on the basis of compatibility with the existing charging interaction logic, so that the vehicle can achieve a plug-and-charge effect when charging through the AC charging pile.

[0004] To achieve the above-mentioned purpose, the technical solution of the embodiment of the present invention is implemented as follows:

[0005] An embodiment of the present invention provides a plug-and-charge charging method, the method comprising:

[0006] In response to the device to be charged being connected to the power supply device, and in response to the power supply device being in a non-charging waiting state, the device to be charged sends first switch information to the power supply device by controlling the operation of the switch S2;

[0007] According to the first switch information sent, the power supply device enters the digital communication mode and sends a PWM signal to the device to be charged, wherein the duty cycle of the PWM is in the range of 3% to 7%;

[0008] According to the PWM signal sent, the device to be charged sends a startup key to the power supply device by controlling the action of switch S2;

[0009] According to the startup key sent, the power supply device verifies the startup key;

[0010] In response to the startup key passing the verification, the power supply device sends a verification code to the device to be charged by adjusting the duty cycle of PWM, wherein the duty cycle of PWM is within the range of 91% to 97%;

[0011] According to the verification code sent, the device to be charged parses the verification code and sends the verification code to the device to be charged by controlling the switch S2;

[0012] The power supply device verifies the verification password according to the verification password sent, and in response to the verification password passing the verification, the power supply device enters a charging ready state;

[0013] In response to the power supply device completing the charging preparation, the power supply device starts charging.

[0014] Preferably, the device to be charged is an electric vehicle or a plug-in hybrid electric vehicle, and the power supply device is a charging pile.

[0015] Preferably, in response to the device to be charged being connected to the power supply device, and in response to the power supply device being in a non-charging waiting state, the device to be charged sending the first switch information to the power supply device by controlling the switch S2 to operate, including:

[0016] In response to the device to be charged being connected to the power supply device, and in response to the power supply device being in a non-charging waiting state, the device to be charged controls the switch S2 to be closed and maintained for a time T1 before opening, wherein the first switch information is an electrical signal generated when the device to be charged controls the switch S2 to be closed and maintained for a time T1 before opening, wherein 200ms<T1≤3s.

[0017] Preferably, the power supply device verifies the startup key according to the startup key sent, including:

[0018] According to the startup key sent, the verification program built into the power supply device verifies the startup key.

[0019] Preferably, the power supply device verifies the verification password according to the sent verification password, including:

[0020] According to the sent verification password, the verification program built into the power supply device verifies the verification password.

[0021] Preferably, the method further comprises:

[0022] In response to the device to be charged being connected to the power supply device, in response to the power supply device being in a charging waiting state, and in response to the power supply device receiving user confirmation information, the power supply device enters a charging ready state.

[0023] Preferably, in response to the startup key passing the verification, the power supply device sends a verification code to the device to be charged by adjusting the PWM duty cycle, including:

[0024] In response to the startup key passing the verification, the power supply device sends a verification code to the device to be charged by adjusting the PWM duty cycle;

[0025] In response to the startup key failing to pass the verification, both the power supply device and the device to be charged exit the charging step.

[0026] An embodiment of the present invention further provides a plug-and-charge charging device, comprising:

[0027] A first signal module is configured to, in response to the device to be charged being connected to the power supply device and the power supply device being in a non-charging waiting state, cause the device to be charged to send first switch information to the power supply device by controlling the operation of the switch S2;

[0028] A second signal module is configured to cause the power supply device to enter a digital communication mode and send a PWM signal to the device to be charged according to the first switch information sent, wherein the duty cycle of the PWM is within a range of 3% to 7%;

[0029] A third signal module is used to control the switch S2 to send a startup key to the power supply device according to the PWM signal sent.

[0030] A verification module, configured to verify the startup key sent by the power supply device;

[0031] a fourth signal module, configured to, in response to the startup key passing verification, cause the power supply device to send a verification code to the device to be charged by adjusting the PWM duty cycle;

[0032] A fifth signal module is configured to parse the verification code sent by the device to be charged and send a verification code to the device to be charged by controlling the switch S2 to operate;

[0033] a verification control module, configured to verify the verification password sent by the power supply device, and in response to the verification password passing the verification, the power supply device enters a charging ready state;

[0034] The starting control module is configured to start charging of the power supply device in response to the power supply device completing charging preparation.

[0035] An embodiment of the present invention further provides a computer device, comprising: a processor and a memory for storing a computer program that can be run on the processor, wherein the processor is configured to implement the charging method when running the computer program.

[0036] An embodiment of the present invention further provides a computer storage medium storing an executable program, wherein when the executable program is executed by a processor, the charging method is implemented.

[0037] The plug-and-play charging method provided in the above embodiment simplifies the verification process compared to the existing technology of identity authentication through card swiping, code scanning, etc., avoids the problem of poor signal affecting identity authentication in places such as underground parking lots, and solves the trouble caused by the loss of charging point cards; compared to the existing technology of identity authentication through Bluetooth modules, NFC or Wifi, the present invention reduces the cost of charging piles and electric vehicles, reduces signal interference in multi-vehicle and multi-pile scenarios, and has better stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A flowchart of a charging method according to an embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of the S2 switch action when the electric vehicle sends a start key in the embodiment;

[0040] Figure 3 This is a schematic diagram of a charging pile sending a clear code via PWM in an embodiment;

[0041] Figure 4 This is an example of the correspondence between plain text and password;

[0042] Figure 5 The diagram of the S2 switch action corresponding to the password matching the plain code A;

[0043] Figure 6 The diagram of the S2 switch action corresponding to the password matching the plaintext M;

[0044] Figure 7 The diagram of the S2 switch action corresponding to the password matching the plain code I;

[0045] Figure 8 The diagram of the S2 switch action corresponding to the password matching the plaintext N;

[0046] Figure 9 This is a flowchart of a charging method according to an embodiment of the present invention;

[0047] Figure 10 This is a schematic structural diagram of a charging device according to an embodiment of the present invention;

[0048] Figure 11 A schematic diagram of the structure of a computer device provided in one embodiment of the present invention. DETAILED DESCRIPTION

[0049] The present invention will be further described in detail below with reference to the following examples. It should be understood that the specific examples described herein are only used to explain the present invention and are not intended to limit the present invention.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0051] A plug-and-play charging method provided in an embodiment of the present invention belongs to the field of electric vehicle charging technology and can be applied in scenarios such as charging of electric vehicles (EVs) and plug-in hybrid electric vehicles. It is understandable that in the prior art, in scenarios where a DC charging pile interacts with a vehicle, the vehicle VIN code can be read through CAN communication to perform user identification and thereby implement a plug-and-play solution. However, when charging through an AC charging pile, due to the lack of a two-way communication protocol, the above-mentioned plug-and-play effect cannot be easily achieved. The user needs to manually swipe a card, pair with Bluetooth, or operate a mobile phone APP before starting charging, and the cumbersome operation reduces the user's charging experience. For example, CN113602136A proposes a method for interacting with a charging pile through an on-board Bluetooth module, and realizing automatic permission identification through interaction between the vehicle and the charging gun through radio frequency technology. However, solutions such as adding Bluetooth, radio frequency devices, or WiFi pairing modules increase the cost of the vehicle and the charging pile, and have the problem of poor universality for different vehicle models and charging piles, which is not conducive to promotion and application.

[0052] Based on this, how to provide a low-cost electric vehicle charging method with plug-and-charge effect has become a technical problem that needs to be solved urgently.

[0053] It should be noted that this method is performed by a computer device. It should be noted that the computer device here refers to any device with computing capabilities, including but not limited to fixed terminal devices or mobile terminal devices. Fixed terminal devices may include but are not limited to desktop computers or computer devices, and mobile terminal devices may include but are not limited to mobile phones, tablet computers, wearable devices, or laptop computers.

[0054] It should be noted that, in the description of the embodiments of the present invention, the implementation object is described as an electric vehicle or EV, but the charging control method disclosed in the present invention is also suitable for plug-in hybrid electric vehicles, and therefore should not be understood as limiting the present invention.

[0055] It should be noted that the information such as the S2 switch, PWM duty cycle, detection point 1, detection point 2, basic charging process, and interaction logic between the charging pile and the electric vehicle mentioned in the description of the embodiments of the present invention are all referenced to GB / T 18487.1-2015. Those skilled in the art can understand the above content without making any creative efforts, so no further detailed analysis will be given.

[0056] It should be noted that in the existing technology, electric vehicles are charged through AC charging piles (hereinafter referred to as charging piles). After the gun is plugged in, the charging pile will enter the charging waiting state. Generally, the charging pile will enter the ready state after verification by scanning a code, swiping a card, etc. If the charging pile is not verified within the specified time, it will automatically exit the charging waiting state. At this time, the charging pile and the electric vehicle stop interacting and fail to charge normally.

[0057] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0058] refer to Figure 9 , an embodiment of the present invention provides a plug-and-charge charging method, the method comprising:

[0059] S11: In response to the device to be charged being connected to the power supply device, and in response to the power supply device being in a non-charging waiting state, the device to be charged sends first switch information to the power supply device by controlling the operation of switch S2;

[0060] S12: According to the first switch information sent, the power supply device enters a digital communication mode and sends a PWM signal to the device to be charged, wherein the duty cycle of the PWM is in the range of 3% to 7%;

[0061] S13: According to the PWM signal sent, the device to be charged sends a startup key to the power supply device by controlling the operation of the switch S2;

[0062] S14: The power supply device verifies the startup key according to the startup key sent;

[0063] S15: In response to the startup key passing the verification, the power supply device sends a verification code to the device to be charged by adjusting the PWM duty cycle, wherein the PWM duty cycle is within the range of 91% to 97%;

[0064] S16: The device to be charged parses the verification code sent and sends the verification code to the device to be charged by controlling the switch S2;

[0065] S17: The power supply device verifies the verification password according to the verification password sent. In response to the verification password passing the verification, the power supply device enters a charging ready state;

[0066] S18: In response to the power supply device completing charging preparation, the power supply device starts charging.

[0067] In some embodiments, for step S11 and step S12, the specific process can refer to Figure 1 During the charging process, if an electric vehicle fails to initiate charging within a certain waiting period after plugging in the charging plug, or if charging fails to initiate charging beyond this waiting period, the electric vehicle will close its S2 switch for a period of time T1 and then open it. Preferably, the holding period satisfies the following: 200ms < T1 ≤ 3s. According to the interaction protocol defined in the GB / T18487.1-2015 standard, the electric vehicle's S2 switch is closed for 200ms to 3s in the ready state and then opened, waking up the charging pile and entering digital communication mode, i.e., the charging pile's PWM duty cycle is 5%. Upon recognizing the electric vehicle's S2 switch information at detection point 1, the charging pile enters digital communication mode and emits a PWM signal with a 5% duty cycle. Failure to initiate charging refers to failure to automatically initiate charging (e.g., when the charging plug is set to a free charging plug) or failure to initiate charging through an external device (e.g., by scanning a code or swiping a card). The waiting period can be, for example, 3 to 5 minutes. It should be noted that if the charging pile has not exited the charging waiting state within the waiting period (3 to 5 minutes), for example, it will exit the charging waiting state 10 minutes after plugging in the charging plug. If verification is done by scanning a code, swiping a card, etc. during the waiting time, the charging pile will enter a ready state and the electric car can start charging.

[0068] Furthermore, when the electric vehicle detects that the PWM duty cycle is 3% to 7% (the theoretical value is 5%, taking into account the detection error) through detection point 2, it sends a startup key to the charging pile; the electric vehicle will control the opening and closing action of the S2 switch according to the agreed timing and duration; the agreed timing refers to the time interval and number of switches recognized by the built-in program of the charging pile. For example, if the built-in program sets S2 to be closed for a "short time" and then opened, and the above opening and closing action is repeated three times in total, the charging pile passes the verification; that is, the charging control method defines the operation method of the startup key proofreading, and the corresponding information is pre-written into the charging pile and the authorized electric vehicle; the "short time" can be defined as t1 lasting 200ms to 1s, and the "long time" can be defined as t2 lasting 3s to 5s; if the electric vehicle opens and closes the S2 switch three times in a row with a duration of t1 according to the S2 switch action mode set by the built-in program, the charging pile enters the two-way key verification link after passing the verification.

[0069] In some embodiments, for steps S13 to S15, the specific process can be referred to Figure 2-3 ,like Figure 2 As shown, the specific method of sending the startup key is to control the S2 switch to be closed for a period of time t1 and then open, and after 2 seconds, the S2 switch is closed again for a period of time t1 and then open, and after an interval of 2 seconds, the S2 switch is closed again for a period of time t1 and then open. It is understandable that a specific method of sending the startup key that is different from the above can also be defined. The specific method of sending the startup key refers to the S2 switch action method set by the built-in program of the electric vehicle and the charging pile. The charging pile detects the action of the S2 switch through detection point 1 and verifies it with the startup key set by the built-in program. If the startup key verification fails, the charging pile will automatically exit the charging waiting state. After the startup key verification passes, the charging pile will enter the two-way key verification link.

[0070] Furthermore, if Figure 3As shown, the charging pile adjusts the PWM duty cycle within the range of 91% to 97% according to a set rule to send a verification code; it should be noted that the GB / T 18487.1-2015 standard defines that when the PWM duty cycle is greater than 90% and less than or equal to 97%, charging will not start, and the charging pile adjusts the PWM duty cycle within the reserved area of ​​91% to 97% without affecting the electric vehicle to produce unexpected actions; it can be understood that the certain rule can be that the PWM duty cycle increases linearly from 91% to 97% and then decreases linearly to 91%; the certain rule can be that the PWM duty cycle increases linearly from 94% to 97% and then decreases linearly to 91% and then increases linearly to 94%; obviously, a certain PWM duty cycle adjustment rule represents a verification code, and multiple PWM duty cycle adjustment rules represent multiple different verification codes; for example, the PW corresponding to the verification code A The M duty cycle increases linearly from 91% to 97% and then decreases linearly to 91%. The PWM duty cycle corresponding to the verification code M decreases linearly from 97% to 91% and then increases linearly to 97%. The PWM duty cycle corresponding to the verification code I decreases linearly from 94% to 91% and then increases linearly to 97%, and then decreases linearly to 94%. The PWM duty cycle corresponding to the verification code N increases linearly from 91% to 97% and then decreases linearly to 91%, and then increases linearly to 94%. In other embodiments, the PWM duty cycle adjustment can be a sinusoidal waveform transition. Optionally, the charging station can send a verification code once every 60 seconds. In other embodiments, the charging station can send a verification code once every 30 seconds. Obviously, the charging station can adjust the PWM duty cycle within the range of 91% to 97% in other ways and with other changing patterns or waveform curves, that is, there can be several other verification codes. The embodiment illustrates four of these verification codes.

[0071] In some embodiments, for steps S16 to S18, the specific process can be referred to Figure 4-8 ,like Figure 4As shown, the electric vehicle receives the duty cycle information (i.e., the verification code) sent by the charging pile through the detection point 2, and further parses the corresponding verification password. That is, the charging control method defines the verification passwords corresponding to different verification codes, and the corresponding information is pre-written into the charging pile and the authorized electric vehicle; in the embodiment, the verification password corresponding to the verification code A is "t1+t2", and the sending method is: the S2 switch is closed for time t1 and then opened, and after 2 seconds, the S2 switch is closed for time t2 and then opened; the verification password corresponding to the verification code M is "t2+t2", and the sending method is: The S2 switch is closed for a period of time t2, then opened. After 2 seconds, the S2 switch is closed for a period of time t2, then opened again. The verification code corresponding to the verification code I is "t1+t1," and is sent as follows: the S2 switch is closed for a period of time t1, then opened. After 2 seconds, the S2 switch is closed for a period of time t1, then opened again. The verification code corresponding to the verification code N is "t2+t1," and is sent as follows: the S2 switch is closed for a period of time t2, then opened. After 2 seconds, the S2 switch is closed for a period of time t1, then opened again. Optionally, t1 is 200ms to 1s, and the differentiating t2 is 3s to 5s. In other embodiments, the verification code can be in the form of "t1+t2+t3" or "t1+t3." Obviously, increasing the number of times the S2 switch is opened and closed or increasing the differentiating S2 switch closure periods can increase the number of verification code combinations. The embodiment only illustrates four of these verification code combinations.

[0072] Furthermore, the electric vehicle can send a verification password by controlling the operation of the S2 switch, such as controlling the S2 to close for a duration of t1, opening it for a short while (such as 2 seconds), and then controlling the S2 to close for a duration of t2 before opening it again. Figure 5 As shown, the electric car sends the verification code "t1+t2" by controlling the S2 switch. The S2 switch is closed for a period of time t1 and then opened. After 2 seconds, the S2 switch is closed for a period of time t2 and then opened. Figure 6 As shown, the electric car sends the verification code "t2+t2" by controlling the S2 switch. The S2 switch is closed for a period of time t2 and then opened. After 2 seconds, the S2 switch is closed for a period of time t2 and then opened again. Figure 7 As shown, the electric car sends the verification code "t1+t1" by controlling the S2 switch. The S2 switch is closed for t1 and then opened. After 2 seconds, the S2 switch is closed for t1 and then opened again. Figure 8 As shown, the electric vehicle transmits the verification code "t2+t1" by controlling switch S2. Switch S2 is closed for time t2, then opened. Two seconds later, switch S2 is closed for time t1, then opened again. In other embodiments, the duration between the two closing operations of switch S2 can be 3 seconds, 5 seconds, or 10 seconds. Alternatively, the electric vehicle completes the transmission of the verification code within 15 seconds; in newer embodiments, the electric vehicle can also complete the transmission of the verification code within 30 seconds.

[0073] Furthermore, if Figure 1 As shown, the charging pile receives the action information of the electric vehicle's S2 switch (i.e., the verification password) through detection point 1 and further compares it with the verification password. If the verification password is verified, the charging pile automatically enters the ready state, eliminating the verification steps such as swiping a card or scanning a code, automatically completing the identity verification of the electric vehicle and realizing plug-and-play charging. If the charging pile recognizes that the verification password sent by the electric vehicle fails to be verified, the charging pile will exit the charging standby state, preventing illegal operations and improving system security.

[0074] In general, the plug-and-charge control method disclosed in the present invention can be applied to the charging pile authority management in the fields of private charging piles, brand-exclusive charging piles, etc. Authorized electric vehicles can obtain the execution logic of the plug-and-charge control and the corresponding password parsing method through factory built-in, APP writing, OTA upgrade, etc., so as to realize the plug-and-charge function of the authorized electric vehicle in the above-mentioned charging pile, and optimize the charging experience. The above-mentioned authorized electric vehicle can still be charged at other charging piles other than the charging pile to which the plug-and-charge control method is applied. Even if the plug-and-charge function cannot be realized, normal charging can be achieved through existing identity authentication technical means (such as swiping a card, scanning a code, etc.), thereby ensuring perfect compatibility. The charging pile to which the plug-and-charge control method is applied can, if necessary, charge unauthorized electric vehicles. Even if the plug-and-charge function cannot be realized, normal charging can be achieved through existing identity authentication technical means (such as swiping a card, scanning a code, etc.), thereby ensuring better adaptability of the charging pile. The significance of the present invention lies in that the plug-and-charge function of the AC charging link is realized without increasing the hardware complexity of the charging pile or the electric vehicle, thereby improving the user's charging experience and satisfying the perfect compatibility of the charging pile and the electric vehicle.

[0075] like Figure 10 As shown, an embodiment of the present invention further provides a plug-and-charge charging device, comprising:

[0076] The first signal module 1001 is configured to, in response to the device to be charged being connected to the power supply device and the power supply device being in a non-charging waiting state, cause the device to be charged to send first switch information to the power supply device by controlling the operation of the switch S2;

[0077] The second signal module 1002 is configured to cause the power supply device to enter a digital communication mode and send a PWM signal to the device to be charged according to the first switch information sent, wherein the PWM duty cycle is within a range of 3% to 7%;

[0078] The third signal module 1003 is configured to control the switch S2 to send a startup key to the power supply device according to the PWM signal received.

[0079] Verification module 1004, configured to verify the startup key sent by the power supply device;

[0080] A fourth signal module 1005 is configured to, in response to the startup key passing verification, cause the power supply device to send a verification code to the device to be charged by adjusting the PWM duty cycle;

[0081] The fifth signal module 1006 is configured to parse the verification code sent by the device to be charged and send a verification code to the device to be charged by controlling the switch S2 to operate;

[0082] The verification control module 1007 is configured to verify the verification password sent by the power supply device, and in response to the verification password passing the verification, the power supply device enters a charging ready state;

[0083] The start control module 1008 is configured to start charging of the power supply device in response to the power supply device completing charging preparation.

[0084] In some embodiments, the first signal module 1001 is specifically configured to:

[0085] In response to the device to be charged being connected to the power supply device, and in response to the power supply device being in a non-charging waiting state, the device to be charged controls the switch S2 to be closed and maintained for a time T1 before opening, wherein the first switch information is an electrical signal generated when the device to be charged controls the switch S2 to be closed and maintained for a time T1 before opening, wherein 200ms<T1≤3s.

[0086] In some embodiments, a user verification module 1009 is further included, specifically configured to:

[0087] In response to the device to be charged being connected to the power supply device, in response to the power supply device being in a charging waiting state, and in response to the power supply device receiving user confirmation information, the power supply device enters a charging ready state.

[0088] It should be noted that the description of the above device items is similar to the description of the above method items, and the description of the beneficial effects of the same method is not repeated. For technical details not disclosed in the device embodiments of the present invention, please refer to the description of the method embodiments of the present invention.

[0089] like Figure 11As shown, an embodiment of the present invention further provides a computer device, including a processor 1101 and a memory 1102 for storing a computer program that can be run on the processor, wherein the processor is used to implement the method described above when running the computer program.

[0090] In some embodiments, the memory 1102 in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDRSDRAM), enhanced synchronous DRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DRRAM). The memory 1102 of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0091] Processor 1101 may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method may be performed by hardware integrated logic circuits or software instructions in processor 1101. The above-mentioned processor 1101 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It may implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in conjunction with the embodiments of the present invention may be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software modules may be located in storage media well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or the like. The storage medium is located in the memory 1102 , and the processor 1101 reads the information in the memory 1102 and completes the steps of the above method in combination with its hardware.

[0092] In some embodiments, the embodiments described herein may be implemented using hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described herein, or a combination thereof.

[0093] For software implementation, the techniques described herein can be implemented by modules (e.g., procedures, functions, etc.) that perform the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or external to the processor.

[0094] Another embodiment of the present invention provides a computer storage medium, which stores an executable program. When the executable program is executed by the processor 1101, the steps applied to the method can be implemented. For example, Figure 9 One or more of the methods shown.

[0095] In some embodiments, the computer storage medium may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc., various media that can store program codes.

[0096] It should be noted that the technical solutions described in the embodiments of the present invention can be arbitrarily combined without conflict.

[0097] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A plug-and-charge charging method, characterized in that: The method is applied to scenarios where a vehicle is charged by an AC charging pile and there is no two-way communication protocol. Without adding hardware and satisfying the existing AC charging control timing logic, the method implements key verification between the charging pile and the electric vehicle on the basis of compatibility with the existing charging interaction logic. The method includes: In response to the device to be charged being connected to the power supply device, and in response to the power supply device being in a non-charging waiting state, the device to be charged sends first switch information to the power supply device by controlling the operation of the switch S2; According to the first switch information sent, the power supply device enters the digital communication mode and sends a PWM signal to the device to be charged, wherein the duty cycle of the PWM is in the range of 3% to 7%; According to the PWM signal sent, the device to be charged sends the startup key to the power supply device by controlling the operation of switch S2 at the agreed timing and duration; the agreed timing refers to the time interval and number of switches recognized by the built-in program of the power supply device; According to the startup key sent, the power supply device verifies the startup key; In response to the startup key passing verification, the power supply device enters a bidirectional key verification phase, in which the power supply device adjusts the PWM duty cycle to send a verification code to the device to be charged. The PWM duty cycle is within the range of 91% to 97%. A specific PWM duty cycle adjustment rule represents a verification code, and multiple PWM duty cycle adjustment rules represent multiple different verification codes. According to the verification plain code sent, the device to be charged parses the verification plain code to obtain a verification password; wherein the verification passwords corresponding to different verification plain codes are defined, and the corresponding information is pre-written into the power supply device and the authorized device to be charged, and the verification password is sent to the power supply device by controlling the operation of the switch S2; The power supply device verifies the verification password according to the verification password sent, and in response to the verification password passing the verification, the power supply device enters a charging ready state; In response to the power supply device completing the charging preparation, the power supply device starts charging.

2. The method according to claim 1, characterized in that The device to be charged is an electric vehicle or a plug-in hybrid electric vehicle, and the power supply device is a charging pile.

3. The method according to claim 1, characterized in that In response to the device to be charged being connected to the power supply device, and in response to the power supply device being in a non-charging waiting state, the device to be charged sending first switch information to the power supply device by controlling the switch S2 to operate, including: In response to the device to be charged being connected to the power supply device, and in response to the power supply device being in a non-charging waiting state, the device to be charged controls the switch S2 to be closed and maintained for a time T1 before opening, wherein the first switch information is an electrical signal generated when the device to be charged controls the switch S2 to be closed and maintained for a time T1 before opening, wherein 200ms<T1≤3s.

4. The method according to claim 1, wherein The power supply device verifies the startup key according to the sent startup key, including: According to the startup key sent, the verification program built into the power supply device verifies the startup key.

5. The method according to claim 1, wherein The power supply device verifies the verification password according to the sent verification password, including: According to the sent verification password, the verification program built into the power supply device verifies the verification password.

6. The method according to claim 1, characterized in that The method further comprises: In response to the device to be charged being connected to the power supply device, in response to the power supply device being in a charging waiting state, and in response to the power supply device receiving user confirmation information, the power supply device enters a charging ready state.

7. The method according to claim 1, characterized in that In response to the startup key passing the verification, the power supply device sends a verification code to the device to be charged by adjusting the PWM duty cycle, including: In response to the startup key passing the verification, the power supply device sends a verification code to the device to be charged by adjusting the PWM duty cycle; In response to the startup key failing to pass the verification, both the power supply device and the device to be charged exit the charging step.

8. A plug-and-charge charging device, characterized in that: The device is used in scenarios where a vehicle is charged by an AC charging pile and there is no two-way communication protocol. Without adding hardware and satisfying the existing AC charging control timing logic, it implements key verification between the charging pile and the electric vehicle on the basis of compatibility with the existing charging interaction logic, including: A first signal module is configured to, in response to the device to be charged being connected to the power supply device and the power supply device being in a non-charging waiting state, cause the device to be charged to send first switch information to the power supply device by controlling the operation of the switch S2; A second signal module is configured to cause the power supply device to enter a digital communication mode and send a PWM signal to the device to be charged according to the first switch information sent, wherein the PWM duty cycle is within a range of 3% to 7%; A third signal module is configured to cause the device to send a startup key to the power supply device by controlling the operation of the switch S2 at an agreed timing and duration according to the PWM signal received; the agreed timing refers to the time interval and number of switches recognized by the built-in program of the power supply device; A verification module, configured to verify the startup key sent by the power supply device; a fourth signal module, configured to, in response to the startup key being verified, cause the power supply device to enter a bidirectional key verification phase, wherein the power supply device adjusts a PWM duty cycle regulation rule to transmit a verification plain code to the device to be charged, wherein the PWM duty cycle is within a range of 91% to 97%. A specific PWM duty cycle regulation rule represents a verification plain code, and multiple PWM duty cycle regulation rules respectively represent multiple different verification plain codes; The fifth signal module is used to parse the verification plain code sent by the charging device to obtain a verification password. The verification passwords corresponding to different verification plain codes are defined and pre-written into the power supply device and the authorized charging device. The verification password is sent to the power supply device by controlling the operation of switch S2. a verification control module, configured to verify the verification password sent by the power supply device, and in response to the verification password passing the verification, the power supply device enters a charging ready state; The starting control module is configured to start charging of the power supply device in response to the power supply device completing charging preparation.

9. A computer device, characterized in that: include: A processor and a memory for storing a computer program that can be run on the processor, wherein the processor implements the method according to any one of claims 1 to 7 when running the computer program.

10. A computer storage medium, characterized in that An executable program is stored, and when the executable program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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