Charging gun state detection circuit, charging gun state detection device and vehicle

Abstract

The embodiment of the utility model provides a charging gun state detection circuit, a charging gun state detection device and a vehicle, belongs to the technical field of electric vehicles, and particularly relates to the charging gun state detection circuit, the charging gun state detection device and the vehicle. The circuit comprises a charging guide module, a charging connection confirmation module, a charging gun state detection module, a gun insertion wake-up module and a gun pulling wake-up module. The input end of the charging connection confirmation module is connected with the charging port; the input end of the charging guide module is connected with the charging port; the input end of the charging gun state detection module is connected with the charging port, and the output end is connected with the input end of the gun insertion wake-up module and the input end of the gun pulling wake-up module. The output end of the gun inserting awakening module and the output end of the gun pulling awakening module are connected with the vehicle body controller. The embodiment constructs a circuit for charging based on a charging connection confirmation signal and detecting the plugging state of a charging gun.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to a charging gun state detection circuit, a charging gun state detection device and a vehicle. Background Art

[0002] In traditional EV charging solutions, when a charging gun is plugged into a charging port, the vehicle is awakened by an A+ auxiliary signal. After waking, the vehicle checks the charging gun's connection status. If the connection is normal, charging begins and the vehicle enters sleep mode. This traditional charging solution not only requires an A+ auxiliary signal to wake the vehicle, increasing circuit complexity, but also fails to detect whether the charging gun is unplugged. This can lead to charging operators forgetting to unplug the charging gun and starting the vehicle, potentially damaging both the charging gun and the vehicle. Utility Model Content

[0003] The main purpose of the embodiments of the present application is to propose a charging gun status detection circuit, a charging gun status detection device and a vehicle, aiming to construct a circuit that charges based on a charging connection confirmation signal and detects the plug-in and unplug-out status of the charging gun.

[0004] To achieve the above objectives, a first aspect of an embodiment of the present application provides a charging gun status detection circuit, which is applied to an electric vehicle, the electric vehicle including a charging port and a body controller, and the circuit includes:

[0005] Charging guidance module, charging connection confirmation module, charging gun status detection module, gun plug wake-up module and gun pull wake-up module;

[0006] The input end of the charging connection confirmation module is connected to the charging port, and is used to output a charging connection confirmation signal to the body controller after the charging gun is inserted into the charging port;

[0007] The input end of the charging guide module is connected to the charging port, and is used to receive the charging guide signal sent by the vehicle body controller after receiving the charging connection confirmation signal to adjust the voltage flowing into the charging port;

[0008] The input end of the charging gun status detection module is connected to the charging port, and the output end is connected to the input end of the gun insertion wake-up module and the input end of the gun removal wake-up module. The charging gun status detection module is used to output a gun insertion signal after the charging gun is inserted into the charging port and output a gun removal signal after the charging gun is removed from the charging port;

[0009] The output end of the gun insertion wake-up module and the output end of the gun withdrawal wake-up module are connected to the vehicle body controller, and the gun insertion wake-up module and the gun withdrawal wake-up module wake up the vehicle body controller based on the gun insertion signal and the gun withdrawal signal.

[0010] In some embodiments, the circuit also includes a port protection module, the input end of the port protection module is electrically connected to the charging port, and the output end of the port protection module is connected to the charging connection confirmation module, the charging guide module and the charging gun status detection module, which is used to provide a stable current to the charging gun status detection module, the charging guide module and the charging connection confirmation module after the charging gun is inserted into the charging port.

[0011] In some embodiments, the port protection module includes a first bidirectional breakdown diode, a first capacitor, and a second capacitor;

[0012] The first bidirectional breakdown diode is electrically connected to the charging port, and the other end is grounded;

[0013] One end of the first capacitor is electrically connected to the charging port, and the other end is electrically connected to one end of the second capacitor;

[0014] The other end of the second capacitor is grounded.

[0015] In some embodiments, the charging gun status detection module includes a first buffer resistor and a first buffer operational amplifier, a first comparison resistor, a second comparison resistor, a third comparison resistor, a first comparison operational amplifier, and a fourth comparison resistor;

[0016] One end of the first buffer resistor is electrically connected to the port protection module, and the other end is electrically connected to the non-inverting input terminal of the first buffer operational amplifier;

[0017] The output end of the first buffer operational amplifier is electrically connected to the inverting input end of the first buffer operational amplifier and one end of the first comparison resistor;

[0018] The other end of the first comparison resistor is electrically connected to the non-inverting input end of the first comparison operational amplifier;

[0019] One end of the second comparison resistor is electrically connected to a power supply, and the other end is electrically connected to one end of the third comparison resistor and the negative phase input terminal of the first comparison operational amplifier;

[0020] The other end of the third comparison resistor is grounded;

[0021] The output terminal of the first comparison operational amplifier is electrically connected to the non-inverting input terminal of the first comparison operational amplifier and one end of the fourth comparison resistor;

[0022] The other end of the fourth comparison resistor is electrically connected to the gun insertion wake-up module and the gun withdrawal wake-up module.

[0023] In some embodiments, a first detection resistor, a second detection resistor, a third detection resistor, a first detection transistor, a fourth detection resistor, and a first detection capacitor;

[0024] One end of the first detection resistor is electrically connected to a power supply, and the other end is electrically connected to one end of the second detection resistor and the gate of the first trigger transistor;

[0025] The other end of the second detection resistor is grounded;

[0026] One end of the third detection resistor is electrically connected to the port protection module, and the other end is electrically connected to the drain of the first detection transistor;

[0027] The source of the first detection transistor is electrically connected to the vehicle body controller, one end of the fourth detection resistor and one end of the first detection capacitor;

[0028] One end of the fourth detection resistor is grounded;

[0029] The other end of the first detection capacitor is grounded.

[0030] In some embodiments, the charging steering module includes a first steering resistor, a first steering diode, a second steering resistor, a third steering resistor, a first steering transistor, a second steering transistor, a fourth steering resistor, and a fifth steering resistor;

[0031] One end of the first guiding resistor is electrically connected to the vehicle body controller, and the other end is electrically connected to the base of the first guiding transistor and one end of the second guiding resistor;

[0032] One end of the first steering diode is electrically connected to a power supply, and the other end is electrically connected to the gate of the second steering transistor and the collector of the first steering transistor;

[0033] The other end of the second guiding resistor is grounded;

[0034] One end of the third steering resistor is electrically connected to a power supply, and the other end is electrically connected to the gate of the second steering transistor and the collector of the first steering transistor;

[0035] The emitter of the first steering transistor is grounded;

[0036] The drain of the second steering transistor is electrically connected to a power supply and one end of the fifth steering resistor, and the source is electrically connected to one end of the fourth steering resistor;

[0037] The other end of the fourth guiding resistor is electrically connected to the port protection module;

[0038] The other end of the fifth guiding resistor is electrically connected to the port protection module.

[0039] In some embodiments, the gun-drawing wake-up module includes a gun-drawing signal trigger;

[0040] The power supply end and input end of the gun-drawing signal trigger are electrically connected to a power supply, the clock input end is electrically connected to the charging gun status detection module, and is used to receive the gun-drawing signal of the charging gun status detection module, the output end is electrically connected to the body controller, and is used to output the gun-drawing wake-up signal, and the reset end is electrically connected to the body controller, and is used to receive the gun-drawing reset signal.

[0041] In some embodiments, the gun plug-in wake-up module includes a first gun plug-in resistor, a first gun plug-in transistor, a second gun plug-in resistor, a third gun plug-in resistor, and a gun plug-in signal trigger;

[0042] One end of the first plug-in resistor is electrically connected to the charging gun state detection module, and the other end is electrically connected to the base of the first plug-in transistor;

[0043] The emitter of the first gun-insertion transistor is electrically connected to a power supply, and the collector is electrically connected to one end of the second gun-insertion resistor and one end of the third gun-insertion resistor;

[0044] The other end of the second plug-in resistor is grounded;

[0045] The clock input end of the gun plug signal trigger is electrically connected to the other end of the third gun plug resistor, the power end and the input end are electrically connected to a power supply, the output end is electrically connected to the body controller for outputting the gun plug wake-up signal, and the reset end is electrically connected to the body controller for receiving the gun plug reset signal.

[0046] To achieve the above objectives, a second aspect of an embodiment of the present application provides a charging gun status detection device, comprising:

[0047] Charging status display circuit;

[0048] The charging gun status detection circuit as described in the first aspect above.

[0049] To achieve the above objectives, a third aspect of the embodiments of the present application provides a new energy vehicle, comprising:

[0050] body;

[0051] Car door;

[0052] Battery;

[0053] Charging port;

[0054] A vehicle control system comprising the charging gun status detection device described in the second aspect above

[0055] In the charging gun status detection circuit, charging gun status detection device and vehicle shown in the embodiments of the present application, after the charging gun is inserted into the charging port, current flows into the charging connection confirmation module, and a charging connection confirmation signal is sent to the body controller. After receiving the charging connection confirmation signal, the body controller sends a charging guidance signal to the charging guidance module. The charging guidance module adjusts the current flowing into the charging port. The adjusted current flows into the charging gun status detection module and inputs a gun plugging signal to the gun plugging wake-up module. The gun plugging wake-up module wakes up the body controller based on the gun plugging signal. After the charging gun is unplugged from the charging port, the charging gun status detection module inputs a gun unplugging signal to the gun unplugging wake-up module. The gun unplugging wake-up module wakes up the body controller based on the gun unplugging signal, thereby realizing the construction of a circuit that charges based on the charging connection confirmation signal and detects the plugging and unplugging status of the charging gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 This is a module block diagram of a charging gun status detection circuit provided in an embodiment of the present application;

[0057] Figure 2 This is a module block diagram of a charging gun status detection circuit provided by another embodiment of the present application;

[0058] Figure 3 yes Figure 2 Circuit diagram of the middle port protection module;

[0059] Figure 4 yes Figure 2 The circuit schematic diagram of the charging gun status detection module;

[0060] Figure 5 yes Figure 2 The circuit schematic diagram of the charging connection confirmation module;

[0061] Figure 6 yes Figure 2 Circuit diagram of the charging guidance module;

[0062] Figure 7 yes Figure 2 Circuit diagram of the gun-drawing wake-up module;

[0063] Figure 8 yes Figure 2 Circuit diagram of the gun-insertion wake-up module;

[0064] Figure 9 This is a schematic diagram of a charging gun status detection circuit provided by another embodiment of the present application;

[0065] Figure 10 This is a module block diagram of a charging gun status detection device provided in an embodiment of the present application;

[0066] Figure 11This is a module block diagram of the new energy vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0068] It should be noted that although the device schematics illustrate functional module divisions and the flowcharts illustrate logical sequences, in certain circumstances, the steps shown or described may be performed in a sequence that differs from the module divisions in the device or the sequence in the flowcharts. The terms "first," "second," and so on, in the specification, claims, and drawings, are used to distinguish similar items and are not necessarily used to describe a specific sequence or precedence.

[0069] 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 application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0070] The charging gun status detection circuit, charging gun status detection device, and vehicle provided in the embodiments of the present application are specifically illustrated through the following embodiments. First, the charging gun status detection circuit in the embodiments of the present application is described.

[0071] The charging gun status detection circuit provided in the embodiments of the present application can be applied to a terminal or a server, or can be software running on the terminal or server. In some embodiments, the terminal can be a smartphone, tablet computer, laptop computer, desktop computer, etc.; the server can be configured as an independent physical server, or as a server cluster or distributed system consisting of multiple physical servers, or as a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms; the software can be an application that implements the charging gun status detection circuit, etc., but is not limited to the above forms.

[0072] The present application can be used in many general or special computer system environments or configurations. For example: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments including any of the above systems or devices, and the like. The present application can be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, and the like that perform specific tasks or implement specific abstract data types. The present application can also be practiced in distributed computing environments in which tasks are performed by remote processing devices connected via a communication network. In a distributed computing environment, program modules can be located in local and remote computer storage media, including storage devices.

[0073] See also Figure 1 In some embodiments, a charging gun status detection circuit is applied to an electric vehicle, which includes a charging port and a body controller. The charging gun status detection circuit includes a charging guidance module 300, a charging connection confirmation module 200, a charging gun status detection module 100, a gun insertion wake-up module 400, and a gun removal wake-up module 500.

[0074] The input end of the charging connection confirmation module 200 is connected to the charging port and is used to output a charging connection confirmation signal to the vehicle body controller after the charging gun is inserted into the charging port;

[0075] The input end of the charging guidance module 300 is connected to the charging port and is used to receive the charging guidance signal sent by the vehicle body controller after receiving the charging connection confirmation signal to adjust the voltage flowing into the charging port;

[0076] The input end of the charging gun status detection module 100 is connected to the charging port, and the output end is connected to the input end of the gun plug wake-up module 400 and the input end of the gun pull-out wake-up module 500. The charging gun status detection module 100 is used to output a gun plug signal after the charging gun is inserted into the charging port and output a gun pull-out signal after the charging gun is pulled out of the charging port;

[0077] The output end of the gun insertion wake-up module 400 and the output end of the gun withdrawal wake-up module 500 are connected to the vehicle body controller. The gun insertion wake-up module 400 and the gun withdrawal wake-up module 500 wake up the vehicle body controller based on the gun insertion signal and the gun withdrawal signal.

[0078] The beneficial effects of the embodiments of the present application include but are not limited to: after the charging gun is inserted into the charging port, current flows into the charging connection confirmation module 200, and a charging connection confirmation signal is sent to the body controller. After receiving the charging connection confirmation signal, the body controller sends a charging guidance signal to the charging guidance module 300. The charging guidance module 300 adjusts the current flowing into the charging port. The adjusted current flows into the charging gun status detection module 100 and inputs a gun plug signal to the gun plug wake-up module 400. The gun plug wake-up module 400 wakes up the body controller based on the gun plug signal. After the charging gun is unplugged from the charging port, the charging gun status detection module 100 inputs a gun pull-out signal to the gun pull-out wake-up module 500. The gun pull-out wake-up module 500 wakes up the body controller based on the gun pull-out signal, thereby realizing the construction of a circuit that charges based on the charging connection confirmation signal and detects the plug-in and unplugging status of the charging gun.

[0079] See also Figure 2 In some embodiments, the circuit further includes a port protection module, an input end of the port protection module is electrically connected to the charging port, and an output end of the port protection module is connected to the charging connection confirmation module 200, the charging guide module 300 and the charging gun status detection module 100, and is used to provide a stable current to the charging gun status detection module 100, the charging guide module 300 and the charging connection confirmation module 200 after the charging gun is inserted into the charging port.

[0080] The advantage of this embodiment is that after the charging gun is inserted into the charging port, a stable current is provided to the charging connection confirmation module 200, the charging guidance module 300 and the charging gun status detection module 100 through the port protection module, making the charging process smoother and reducing charging problems caused by unstable current.

[0081] See also Figure 2 and Figure 3 In some embodiments, the port protection module includes a first bidirectional breakdown diode D101, a first capacitor C101, and a second capacitor C102;

[0082] The first bidirectional breakdown diode D101 is electrically connected to the charging port, and the other end is grounded;

[0083] One end of the first capacitor C101 is electrically connected to the charging port, and the other end is electrically connected to one end of the second capacitor C102;

[0084] The other end of the second capacitor C102 is grounded.

[0085] The advantage of this embodiment is that when the charging gun outputs an overvoltage exceeding the rated voltage to the charging port, the first bidirectional breakdown diode D101 quickly turns on, discharging the overvoltage to ground and preventing damage to the circuit. Furthermore, the combination of the first capacitor C101 and the second capacitor C102 forms a low-pass filter, ensuring a smooth and stable current supply, thereby reducing charging problems caused by unstable current.

[0086] See also Figure 2 and Figure 4 In some embodiments, the charging gun status detection module 100 includes a first buffer resistor R17 and a first buffer operational amplifier U2A, a first comparison resistor R4, a second comparison resistor R6, a third comparison resistor R7, a first comparison operational amplifier U1A, and a fourth comparison resistor R9;

[0087] One end of the first buffer resistor R17 is electrically connected to the port protection module, and the other end is electrically connected to the non-inverting input terminal of the first buffer operational amplifier U2A;

[0088] The output terminal of the first buffer operational amplifier U2A is electrically connected to the inverting input terminal of the first buffer operational amplifier U2A and one end of the first comparison resistor R4;

[0089] The other end of the first comparison resistor R4 is electrically connected to the non-inverting input end of the first comparison operational amplifier U1A;

[0090] One end of the second comparison resistor R6 is electrically connected to the power supply, and the other end is electrically connected to one end of the third comparison resistor R7 and the negative phase input terminal of the first comparison operational amplifier U1A;

[0091] The other end of the third comparison resistor R7 is grounded;

[0092] An output terminal of the first comparison operational amplifier U1A is electrically connected to a non-inverting input terminal of the first comparison operational amplifier U1A and one end of a fourth comparison resistor R9;

[0093] The other end of the fourth comparison resistor R9 is electrically connected to the gun insertion wake-up module 400 and the gun removal wake-up module 500 .

[0094] The advantage of this embodiment is that by connecting one end of the first buffer resistor R17 to the port protection module and the other end electrically connected to the positive input of the first buffer operational amplifier U2A, and connecting the output of the first buffer operational amplifier U2A to its inverting input, isolation is achieved between the port protection module and the first comparator operational amplifier U1A, reducing the load effect between the power supply and the first comparator operational amplifier U1A. Furthermore, the current from the charging port flows through the port protection module and the first buffer amplifier and is input into the positive input of the first comparator amplifier. Simultaneously, the second comparator resistor R6 conducts current and inputs it into the inverting input of the first comparator amplifier. This compares the currents at the positive and inverting inputs. When a charging cable is inserted into the charging port, the current flowing into the positive input is greater than the current flowing into the inverting input, resulting in a plug-in signal. When the charging cable is not inserted into the charging port, the current flowing into the positive input is less than the current flowing into the inverting input, resulting in a plug-in signal. This allows the charger to be identified as either plugged in or unplugged.

[0095] See also Figure 2 and Figure 5 In some embodiments, the charging connection confirmation module 200 includes: a first detection resistor R28, a second detection resistor R30, a third detection resistor R27, a first detection transistor Q104, a fourth detection resistor R29 and a first detection capacitor C1;

[0096] One end of the first detection resistor R28 is electrically connected to the power supply, and the other end is electrically connected to one end of the second detection resistor R30 and the gate of the first trigger transistor;

[0097] The other end of the second detection resistor R30 is grounded;

[0098] One end of the third detection resistor R27 is electrically connected to the port protection module, and the other end is electrically connected to the drain of the first detection transistor Q104;

[0099] The source of the first detection transistor Q104 is electrically connected to the vehicle body controller, one end of the fourth detection resistor R29 and one end of the first detection capacitor C1;

[0100] One end of the fourth detection resistor R29 is grounded;

[0101] The other end of the first detection capacitor C1 is grounded.

[0102] The advantage of this embodiment is that the current flows through the third detection resistor R27 and the first detection transistor Q104. The current flowing from the source of the first detection transistor Q104 to the body controller through the MCU_CC2_AD pin changes, and a charging connection confirmation signal is sent to the body controller, so that the vehicle can start managing the charging process based on the charging connection confirmation signal.

[0103] See also Figure 2 and Figure 6 In some embodiments, the charging steering module 300 includes a first steering resistor R102, a first steering diode D100, a second steering resistor R103, a third steering resistor R100, a first steering transistor Q101, a second steering transistor Q100, a fourth steering resistor R1, and a fifth steering resistor R2;

[0104] One end of the first guiding resistor R102 is electrically connected to the vehicle body controller, and the other end is electrically connected to the base of the first guiding transistor Q101 and one end of the second guiding resistor R103;

[0105] One end of the first steering diode D100 is electrically connected to the power supply, and the other end is electrically connected to the gate of the second steering transistor Q100 and the collector of the first steering transistor Q101;

[0106] The other end of the second guiding resistor R103 is grounded;

[0107] One end of the third steering resistor R100 is electrically connected to the power supply, and the other end is electrically connected to the gate of the second steering transistor Q100 and the collector of the first steering transistor Q101;

[0108] The emitter of the first guide transistor Q101 is grounded;

[0109] The drain of the second guiding transistor Q100 is electrically connected to the power supply and one end of the fifth guiding resistor R2, and the source is electrically connected to one end of the fourth guiding resistor R1;

[0110] The other end of the fourth guiding resistor R1 is electrically connected to the port protection module;

[0111] The other end of the fifth guiding resistor R2 is electrically connected to the port protection module.

[0112] The advantage of this embodiment is that when the vehicle body controller detects the charging connection confirmation signal, it changes the voltage at the base of the first steering transistor Q101 through the MCU_S2_CTL pin of the charging steering module 300, thereby changing the current flowing from the port protection module to the charging gun status detection module 100, allowing the vehicle to be charged based on the changed current.

[0113] See also Figure 2 and Figure 7 ,In some embodiments, the gun-drawing wake-up module 500 includes a gun-drawing signal trigger U3A;

[0114] The power supply end and the input end of the plug-out signal flip-flop U3A are electrically connected to the power supply, the clock input end is electrically connected to the charging gun state detection module 100, is used for receiving the plug-out signal of the charging gun state detection module 100, the output end is electrically connected to the vehicle body controller, is used for outputting the plug-out wake-up signal, and the reset end is electrically connected to the vehicle body controller, is used for receiving the plug-out reset signal.

[0115] The embodiment has the advantages that when the charging gun is pulled out of the charging port, the charging gun state detection module 100 inputs the plug-out signal to the plug-out wake-up module 500, the plug-out wake-up module 500 sends the plug-out wake-up signal to the vehicle through the BQ_WAKE pin to wake up the vehicle body controller after receiving the plug-out signal, and the vehicle body controller sends the plug-out reset signal to the MCU_MR pin on the plug-out wake-up module 500 after a preset time, so that the plug-out wake-up module 500 stops outputting the plug-out wake-up signal.

[0116] Please refer to Figure 2 and Figure 8 In some embodiments, the plug-in wake-up module 400 includes a first plug-in resistor R22, a first plug-in triode Q1, a second plug-in resistor R11, a third plug-in resistor R3, and a plug-in signal flip-flop U6A.

[0117] One end of the first plug-in resistor R22 is electrically connected to the charging gun state detection module 100, and the other end is electrically connected to the base of the first plug-in triode Q1.

[0118] The emitter of the first plug-in triode Q1 is electrically connected to the power supply, and the collector is electrically connected to one end of the second plug-in resistor R11 and one end of the third plug-in resistor R3.

[0119] The other end of the second plug-in resistor R11 is grounded.

[0120] The clock input end of the plug-in signal flip-flop U6A is electrically connected to the other end of the third plug-in resistor R3, the power supply end and the input end are electrically connected to the power supply, the output end is electrically connected to the vehicle body controller, is used for outputting the plug-in wake-up signal, and the reset end is electrically connected to the vehicle body controller, is used for receiving the plug-in reset signal.

[0121] The embodiment has the advantages that when the charging gun is pulled out of the charging port, the charging gun state detection module 100 inputs the plug-out signal to the plug-out wake-up module 500, the plug-out wake-up module 500 sends the plug-out wake-up signal to the vehicle through the BQ_WAKE pin to wake up the vehicle body controller after receiving the plug-out signal, and the vehicle body controller sends the plug-out reset signal to the plug-out wake-up module 500 after a preset time, so that the plug-out wake-up module 500 stops outputting the plug-out wake-up signal.

[0122] Please refer to Figure 2 and Figure 9When the charging gun is inserted into the charging port, the current flows into the charging connection confirmation module 200, and the charging connection confirmation signal is sent to the body controller. After receiving the charging connection confirmation signal, the body controller sends a charging guidance signal to the charging guidance module 300. The charging guidance module 300 adjusts the current flowing into the charging port. The adjusted current flows into the charging gun status detection module 100 and inputs a plug-in signal to the gun plug-in wake-up module 400. The gun plug-in wake-up module 400 wakes up the body controller based on the gun plug-in signal. After the charging gun is unplugged from the charging port, the charging gun status detection module 100 inputs a gun pull-out signal to the gun pull-out wake-up module 500. The gun pull-out wake-up module 500 wakes up the body controller based on the gun pull-out signal.

[0123] See also Figure 10 , an embodiment of the present application also provides a charging gun status detection device, including a charging status display circuit and a charging gun status detection circuit.

[0124] The specific implementation of the charging gun state detection circuit in the charging gun state detection device is basically the same as the specific embodiment of the charging state detection circuit described above, and will not be repeated here.

[0125] See also Figure 11 An embodiment of the present application also provides a new energy vehicle, including a vehicle body, doors, a battery, a charging port and a vehicle control system, wherein the vehicle control system includes a charging status detection device.

[0126] The specific implementation of the vehicle control system in the car is basically the same as the specific embodiment of the above-mentioned charging status detection device, and will not be repeated here.

[0127] The embodiments of the present application provide a charging gun status detection circuit, a charging gun status detection device, and a vehicle. After the charging gun is inserted into the charging port, current flows into the charging connection confirmation module 200, and a charging connection confirmation signal is sent to the body controller. After receiving the charging connection confirmation signal, the body controller sends a charging guidance signal to the charging guidance module 300. The charging guidance module 300 adjusts the current flowing into the charging port. The adjusted current flows into the charging gun status detection module 100 and inputs a gun plug signal to the gun plug wake-up module 400. The gun plug wake-up module 400 wakes up the body controller based on the gun plug signal. After the charging gun is unplugged from the charging port, the charging gun status detection module 100 inputs a gun pull-out signal to the gun pull-out wake-up module 500. The gun pull-out wake-up module 500 wakes up the body controller based on the gun pull-out signal, thereby realizing the construction of a circuit that charges based on the charging connection confirmation signal and detects the plug-in and unplugging status of the charging gun.

[0128] The embodiments described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0129] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0130] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, i.e., they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0131] Those skilled in the art will appreciate that all or some of the steps in the methods, systems, and functional modules / units in the devices disclosed above may be implemented as software, firmware, hardware, or appropriate combinations thereof.

[0132] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0133] It should be understood that in this application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0134] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the above-mentioned units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. The mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0135] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0136] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but are not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and essence of the present invention should be within the scope of the present invention.

Claims

1. A charging gun status detection circuit, applied to an electric vehicle, the electric vehicle including a charging port and a body controller, characterized in that: The circuit comprises: Charging guidance module, charging connection confirmation module, charging gun status detection module, gun plug wake-up module and gun pull wake-up module; The input end of the charging connection confirmation module is connected to the charging port, and is used to output a charging connection confirmation signal to the body controller after the charging gun is inserted into the charging port; The input end of the charging guide module is connected to the charging port, and is used to receive the charging guide signal sent by the vehicle body controller after receiving the charging connection confirmation signal to adjust the voltage flowing into the charging port; The input end of the charging gun status detection module is connected to the charging port, and the output end is connected to the input end of the gun insertion wake-up module and the input end of the gun removal wake-up module. The charging gun status detection module is used to output a gun insertion signal after the charging gun is inserted into the charging port and output a gun removal signal after the charging gun is removed from the charging port; The output end of the gun insertion wake-up module and the output end of the gun withdrawal wake-up module are connected to the vehicle body controller, and the gun insertion wake-up module and the gun withdrawal wake-up module wake up the vehicle body controller based on the gun insertion signal and the gun withdrawal signal.

2. The circuit according to claim 1, wherein: The circuit also includes a port protection module, the input end of the port protection module is electrically connected to the charging port, and the output end of the port protection module is connected to the charging connection confirmation module, the charging guide module and the charging gun status detection module, and is used to provide a stable current to the charging gun status detection module, the charging guide module and the charging connection confirmation module after the charging gun is inserted into the charging port.

3. The circuit according to claim 2, characterized in that The port protection module includes a first bidirectional breakdown diode, a first capacitor and a second capacitor; The first bidirectional breakdown diode is electrically connected to the charging port, and the other end is grounded; One end of the first capacitor is electrically connected to the charging port, and the other end is electrically connected to one end of the second capacitor; The other end of the second capacitor is grounded.

4. The circuit according to claim 2, characterized in that The charging gun state detection module includes a first buffer resistor and a first buffer operational amplifier, a first comparison resistor, a second comparison resistor, a third comparison resistor, a first comparison operational amplifier, and a fourth comparison resistor; One end of the first buffer resistor is electrically connected to the port protection module, and the other end is electrically connected to the non-inverting input terminal of the first buffer operational amplifier; The output end of the first buffer operational amplifier is electrically connected to the inverting input end of the first buffer operational amplifier and one end of the first comparison resistor; The other end of the first comparison resistor is electrically connected to the non-inverting input end of the first comparison operational amplifier; One end of the second comparison resistor is electrically connected to a power supply, and the other end is electrically connected to one end of the third comparison resistor and the negative phase input terminal of the first comparison operational amplifier; The other end of the third comparison resistor is grounded; The output terminal of the first comparison operational amplifier is electrically connected to the non-inverting input terminal of the first comparison operational amplifier and one end of the fourth comparison resistor; The other end of the fourth comparison resistor is electrically connected to the gun insertion wake-up module and the gun withdrawal wake-up module.

5. The circuit according to claim 2, characterized in that The charging connection confirmation module includes: a first detection resistor, a second detection resistor, a third detection resistor, a first detection transistor, a fourth detection resistor and a first detection capacitor; One end of the first detection resistor is electrically connected to a power supply, and the other end is electrically connected to one end of the second detection resistor and the gate of the first trigger transistor; The other end of the second detection resistor is grounded; One end of the third detection resistor is electrically connected to the port protection module, and the other end is electrically connected to the drain of the first detection transistor; The source of the first detection transistor is electrically connected to the vehicle body controller, one end of the fourth detection resistor and one end of the first detection capacitor; One end of the fourth detection resistor is grounded; The other end of the first detection capacitor is grounded.

6. The circuit according to claim 2, characterized in that The charging steering module includes a first steering resistor, a first steering diode, a second steering resistor, a third steering resistor, a first steering transistor, a second steering transistor, a fourth steering resistor and a fifth steering resistor; One end of the first guiding resistor is electrically connected to the vehicle body controller, and the other end is electrically connected to the base of the first guiding transistor and one end of the second guiding resistor; One end of the first steering diode is electrically connected to a power supply, and the other end is electrically connected to the gate of the second steering transistor and the collector of the first steering transistor; The other end of the second guiding resistor is grounded; One end of the third steering resistor is electrically connected to a power supply, and the other end is electrically connected to the gate of the second steering transistor and the collector of the first steering transistor; The emitter of the first steering transistor is grounded; The drain of the second steering transistor is electrically connected to a power supply and one end of the fifth steering resistor, and the source is electrically connected to one end of the fourth steering resistor; The other end of the fourth guiding resistor is electrically connected to the port protection module; The other end of the fifth guiding resistor is electrically connected to the port protection module.

7. The circuit according to claim 6, characterized in that The gun-drawing wake-up module includes a gun-drawing signal trigger; The power supply end and input end of the gun-drawing signal trigger are electrically connected to a power supply, the clock input end is electrically connected to the charging gun status detection module, and is used to receive the gun-drawing signal of the charging gun status detection module, the output end is electrically connected to the body controller, and is used to output a gun-drawing wake-up signal, and the reset end is electrically connected to the body controller, and is used to receive a gun-drawing reset signal.

8. The circuit according to claim 6, characterized in that The gun plug-in wake-up module includes a first gun plug-in resistor, a first gun plug-in transistor, a second gun plug-in resistor, a third gun plug-in resistor, and a gun plug-in signal trigger; One end of the first plug-in resistor is electrically connected to the charging gun state detection module, and the other end is electrically connected to the base of the first plug-in transistor; The emitter of the first gun-insertion transistor is electrically connected to a power supply, and the collector is electrically connected to one end of the second gun-insertion resistor and one end of the third gun-insertion resistor; The other end of the second plug-in resistor is grounded; The clock input end of the gun plug signal trigger is electrically connected to the other end of the third gun plug resistor, the power end and the input end are electrically connected to a power supply, the output end is electrically connected to the body controller for outputting a gun plug wake-up signal, and the reset end is electrically connected to the body controller for receiving a gun plug reset signal.

9. A charging gun status detection device, characterized in that: include: Charging status display circuit; The charging gun status detection circuit according to any one of claims 1 to 8.

10. A new energy vehicle, characterized in that: include: body; Car door; Battery; Charging port; A vehicle control system, comprising the charging gun status detection device according to claim 9.

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