Detection device and method for charging gun plug-in signal and vehicle

Abstract

The present disclosure relates to a detection device, method and vehicle for a charging gun plug-in signal. The detection device (100) comprises: a first detection module (101) arranged in an OBC, connected with a charging port CC pin of the vehicle, used for detecting the plug-in signal and outputting a first detection signal; a second detection module (102) arranged in a BMC, connected with the charging port CC pin, used for detecting the plug-in signal and outputting a second detection signal; a first control module (103) arranged in the OBC, used for determining a first detection result according to the first detection signal; a second control module (104) arranged in the BMC, used for determining a second detection result according to the second detection signal, and the second control module (104) is further in communication connection with the first control module (103), used for outputting a connection state of the charging gun according to the first detection result and the second detection result.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of electric vehicles, in particular, to a detection device, method and vehicle for a charging gun insertion signal. BACKGROUND

[0002] At present, charging with a charging gun is a way to supplement energy for an electric vehicle. When the vehicle charging is completed, if the user forgets to pull out the charging gun from the charging port of the vehicle, the vehicle will drive with the charging gun, which has a safety hazard. In the related art, whether the vehicle is inserted with the charging gun is detected by a vehicle-mounted charging system, and the vehicle is not allowed to be driven when the vehicle is inserted with the charging gun, thereby reducing the situation of the vehicle driving with the charging gun.

[0003] However, when the vehicle-mounted charging system fails, the vehicle-mounted charging system cannot correctly identify whether the vehicle is inserted with the charging gun, and in the case that the vehicle is inserted with the charging gun, the vehicle-mounted charging system judges that the vehicle is not inserted with the charging gun, so that the vehicle is allowed to be driven, which may cause the situation of the vehicle driving with the charging gun to occur. SUMMARY

[0004] The purpose of the present disclosure is to provide a detection device, method and vehicle for a charging gun insertion signal, which can detect whether the vehicle is inserted with the charging gun when the vehicle-mounted charging system fails, and avoid the vehicle driving in the case that the vehicle is inserted with the charging gun.

[0005] To achieve the above purpose, the present disclosure provides a detection device for a charging gun insertion signal, comprising:

[0006] a first detection module, arranged in an OBC, connected with a charging port CC pin of a vehicle, used for detecting an insertion signal and outputting a first detection signal;

[0007] a second detection module, arranged in a BMC, connected with the charging port CC pin, used for detecting the insertion signal and outputting a second detection signal;

[0008] a first control module, arranged in the OBC, used for determining a first detection result according to the first detection signal;

[0009] a second control module, arranged in the BMC, used for determining a second detection result according to the second detection signal, and the second control module is further in communication connection with the first control module, and used for outputting a connection state of the charging gun according to the first detection result and the second detection result.

[0010] Optionally, the first detection module comprises a first pull-up power supply, a first resistor and an operational amplifier, an input end of the first detection module is connected with the charging port CC pin, and the first detection module is connected with the first pull-up power supply through the first resistor, and the input end of the first detection module is connected with the output end of the first detection module through the operational amplifier.

[0011] Optionally, the second detection module comprises a second pull-up power supply, a second resistor, a third resistor, a switch, a comparator and a power supply, an input end of the second detection module is connected with the charging port CC pin, and the input end of the second detection module is connected with the second pull-up power supply through the second resistor and the switch in sequence, the input end of the second detection module is connected with a first input end of the comparator, the power supply is connected with a second input end of the comparator through the third resistor, and an output end of the comparator is used as an output end of the second detection module.

[0012] Optionally, the second control module is used for:

[0013] if the first detection result and the second detection result are consistent, outputting the second detection result in the case that the switch is closed;

[0014] if the first detection result and the second detection result are inconsistent, outputting the second detection result in the case that the switch is closed.

[0015] The present disclosure further provides a detection method of a charging gun insertion signal, which is applied to a detection device of the charging gun insertion signal, and the detection device comprises:

[0016] a first detection module arranged in an OBC and connected with a charging port CC pin of a vehicle, used for detecting an insertion signal and outputting a first detection signal;

[0017] a second detection module arranged in a BMC and connected with the charging port CC pin, used for detecting an insertion signal and outputting a second detection signal;

[0018] The method comprises:

[0019] a first control module determining a first detection result according to the first detection signal;

[0020] a second control module determining a second detection result according to the second detection signal;

[0021] the second control module outputting a connection state of a charging gun according to the first detection result and the second detection result.

[0022] Optionally, the first detection module comprises a first pull-up power supply, a first resistor and an operational amplifier, the input end of the first detection module is connected with the charging port CC pin, and the input end of the first detection module is connected with the first pull-up power supply through the first resistor, and the input end of the first detection module is connected with the output end of the first detection module through the operational amplifier.

[0023] Optionally, the second detection module comprises a second pull-up power supply, a second resistor, a third resistor, a switch, a comparator and a power supply, the input end of the second detection module is connected with the charging port CC pin, and the input end of the second detection module is connected with the second pull-up power supply through the second resistor and the switch in sequence, the input end of the second detection module is connected with the first input end of the comparator, the power supply is connected with the second input end of the comparator through the third resistor, and the output end of the comparator serves as the output end of the second detection module.

[0024] Optionally, the second control module outputs the connection state of the charging gun according to the first detection result and the second detection result, and the method comprises the following steps.

[0025] If the first detection result and the second detection result are consistent when the switch is turned off, the second control module outputs the second detection result.

[0026] If the first detection result and the second detection result are inconsistent, the second control module controls the switch to be turned on, and outputs the second detection result under the state that the switch is turned on.

[0027] Optionally, the method further comprises the following steps.

[0028] If the first detection result and the second detection result are inconsistent, the second control module outputs the prompt message of the OBC fault.

[0029] The present disclosure also provides a vehicle comprising the detection device of the charging gun plug-in signal.

[0030] Through the above technical solution, the on-board charger and the battery management controller can independently detect whether the vehicle charging port is connected with the charging gun, and the second control module in the battery management controller outputs the connection state of the charging gun according to the second detection result and the first detection result. In this way, even if the on-board charging system fails and the power supply is lost, the connection state of the charging gun can be correctly judged, and the vehicle can be prevented from being driven in the case of plugging in the charging gun, thereby improving the safety of the vehicle use.

[0031] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the specific description below, serve to explain the present disclosure but do not limit the present disclosure. In the drawings:

[0033] Figure 1 is a block diagram of a detection device for a charging gun insertion signal provided in an exemplary embodiment of the present disclosure.

[0034] Figure 2 is a circuit diagram of a first detection module provided in an exemplary embodiment of the present disclosure.

[0035] Figure 3 is a circuit diagram of a second detection module provided in an exemplary embodiment of the present disclosure.

[0036] Figure 4 is a circuit diagram of a detection device for a charging gun insertion signal provided in an exemplary embodiment of the present disclosure.

[0037] Figure 5 is a flowchart of a detection method for a charging gun insertion signal provided in an exemplary embodiment of the present disclosure.

[0038] Figure 6 is a flowchart of a detection method for a charging gun insertion signal provided in another exemplary embodiment of the present disclosure.

[0039] Explanation of reference numerals

[0040] 100 detection device for a charging gun insertion signal 101 first detection module

[0041] 102 second detection module 103 first control module

[0042] 104 second control module

[0043] 11 first pull-up power supply 12 first resistor

[0044] 13 operational amplifier 101a input terminal of the first detection module

[0045] 101b output terminal of the first detection module 21 second pull-up power supply

[0046] 22 second resistor 23 third resistor

[0047] 24 switch 25 comparator

[0048] 26 power supply 102a input terminal of the second detection module

[0049] 102b output terminal of the second detection module 103a input terminal of the first control module

[0050] 104a input terminal of the second control module

[0051] 100a CC pin of the charging port of the vehicle DETAILED DESCRIPTION

[0052] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0053] It should be noted that all actions of obtaining signals, information or data in the present disclosure are carried out in accordance with the corresponding data protection regulations and policies of the country where the device is located, and with the authorization given by the owner of the corresponding device.

[0054] Figure 1 is a block diagram of a detection device for a charging gun insertion signal provided in an exemplary embodiment of the present disclosure. As shown in Figure 1 The detection device for the charging gun insertion signal 100 includes a first detection module 101, a second detection module 102, a first control module 103 and a second control module 104.

[0055] The first detection module 101 is arranged in the on-board charger (OBC) and connected with the connection confirmation (CC) pin of the charging port of the vehicle, for detecting the insertion signal and outputting a first detection signal. The second detection module 102 is arranged in the battery management controller (BMC) and connected with the CC pin of the charging port, for detecting the insertion signal and outputting a second detection signal. The first control module 103 is arranged in the OBC, for determining a first detection result according to the first detection signal. The second control module 104 is arranged in the BMC, for determining a second detection result according to the second detection signal, and the second control module 104 is also in communication connection with the first control module 103 (indicated by a dashed line), for outputting the connection state of the charging gun according to the first detection result and the second detection result.

[0056] The CC pin of the charging port of the vehicle is a pin on the charging port socket of the vehicle, and the branch where it is located is used to confirm that the charging port of the vehicle is connected with the charging gun. The CC pin on the charging gun plug is grounded through a grounding resistor. The insertion signal is a signal used to determine whether the charging port of the vehicle is connected with the charging gun, and the signal can be the voltage at the CC pin of the charging port of the vehicle.

[0057] The first detection module 101 can detect the plug-in gun signal by using the circuit inside the first detection module 101 after collecting the voltage at the vehicle charging port CC pin, and output a first detection signal after the detection of the plug-in gun signal is completed. The first detection signal is a signal output after the plug-in gun signal is detected by the internal circuit of the first detection module 101, which can be a voltage signal. For example, the first detection module 101 detects the plug-in gun signal by using the voltage follower inside the first detection module 101 after collecting the voltage at the vehicle charging port CC pin, and outputs a voltage signal (i.e. the first detection signal) by the voltage follower inside the first detection module 101.

[0058] The second detection module 102 can detect the plug-in gun signal by using the circuit inside the second detection module 102 after collecting the voltage at the vehicle charging port CC pin, and output a second detection signal. The second detection signal is a signal output after the plug-in gun signal is detected by the internal circuit of the second detection module 102, which can be a voltage signal. For example, the second detection module 102 compares the voltage inside the second detection module 102 with the voltage of a power supply provided inside the second detection module 102 after collecting the voltage at the vehicle charging port CC pin, and outputs a voltage signal (i.e. the second detection signal) by the voltage comparator inside the second detection module 102.

[0059] The first control module 103 determines the first detection result according to the first detection signal output by the first detection module 101. The first detection result is used to indicate whether the vehicle charging port is connected with the charging gun, which can include two kinds of the vehicle charging port connected with the charging gun and the vehicle charging port not connected with the charging gun. For example, if the voltage value of the first detection signal is within the voltage range preset by the designer to represent that the vehicle charging port is connected with the charging gun, the first control module 103 confirms that the first detection result is that the vehicle charging port is connected with the charging gun according to the first detection signal. For example, if the voltage value of the first detection signal is not within the voltage threshold range preset by the designer to represent that the vehicle charging port is connected with the charging gun, the first control module 103 confirms that the first detection result is that the vehicle charging port is not connected with the charging gun according to the first detection signal.

[0060] The second control module 104 determines the second detection result according to the second detection signal output by the second detection module 102. The second detection result is used to indicate whether the vehicle charging port is connected with the charging gun, which can include two kinds of the vehicle charging port connected with the charging gun and the vehicle charging port not connected with the charging gun. For example, if the level of the second detection signal is the level (such as low level) preset by the designer to represent that the vehicle charging port is connected with the charging gun, the second control module 104 confirms that the second detection result is that the vehicle charging port is connected with the charging gun according to the second detection signal.

[0061] The first control module 103 and the second control module 104 are communicatively connected, for example, the first control module 103 and the second control module 104 can be communicatively connected through a Controller Area Network (CAN). The first control module 103 sends the first detection result to the second control module 104 through a communication mode in the related art, and the second control module 104 outputs the connection state of the charging gun according to the second detection result and the first detection result. The connection state of the charging gun includes that the vehicle charging port is connected with the charging gun and the vehicle charging port is not connected with the charging gun.

[0062] Through the above technical solution, the vehicle-mounted charger and the battery management controller can independently detect whether the vehicle charging port is connected with the charging gun, and the second control module in the battery management controller outputs the connection state of the charging gun according to the second detection result and the first detection result. In this way, even if the vehicle-mounted charging system fails and power supply is lost, the connection state of the charging gun can be correctly judged, and the vehicle is prevented from being driven in the case of being inserted into the charging gun, thereby improving the safety of the vehicle use.

[0063] Figure 2 is a circuit diagram of a first detection module provided in an example embodiment of the present disclosure. In another embodiment, as shown in Figure 2 The first detection module 101 includes a first pull-up power supply 11, a first resistor 12, and an operational amplifier 13. The input end 101a of the first detection module 101 is connected with the charging port CC pin and connected with the first pull-up power supply 11 through the first resistor 12; the input end of the first detection module is connected with the output end 101b of the first detection module 101 through the operational amplifier 13. The first pull-up power supply 11 is used to output a high level through the first resistor (pull-up resistor) 12.

[0064] In this embodiment, a circuit diagram of a first detection module 101 is specifically shown, which detects the change of the plug-in signal before and after the vehicle charging port is inserted into the charging gun by using a pull-up resistor and an operational amplifier 13, and outputs the first detection result.

[0065] Figure 3 is a circuit diagram of a second detection module provided in an example embodiment of the present disclosure. As shown in Figure 3As shown, in yet another embodiment, the second detection module 102 comprises a second pull-up power supply 21, a second resistor 22, a third resistor 23, a switch 24, a comparator 25 and a power supply 26. The input end 102a of the second detection module 102 is connected to the charging port CC pin and sequentially passes through the second resistor 22 and the switch 24 to connect the second pull-up power supply 21. The input end 102a of the second detection module 102 is connected to the first input end of the comparator, and the power supply 26 is connected to the second input end of the comparator through the third resistor 23. The output end of the comparator serves as the output end 102b of the second detection module 102. The second pull-up power supply 21 is used to output a high level through the second resistor (pull-up resistor) 22.

[0066] In this embodiment, the comparator 25 is used to compare the plug-in gun signal with the voltage of the branch of the power supply 26, and output the comparison result as the second detection signal. The second detection module 102 is provided with the switch 24. When the first pull-up power supply 11 in the first detection module 101 can normally supply power, the switch 24 is opened, the first pull-up power supply 11 and the first resistor 12 form a branch with the ground resistor connected to the plug-in CC pin in the charging gun, and the plug-in gun signal is formed at the charging port CC pin of the vehicle. When the first pull-up power supply 11 in the first detection module 101 fails to supply power, the switch 24 can be closed, and the second pull-up power supply 21 and the second resistor 22 form a branch with the ground resistor connected to the plug-in CC pin in the charging gun, and the plug-in gun signal is formed at the charging port CC pin of the vehicle. In this way, when the first pull-up power supply 11 fails to supply power, the plug-in gun signal detection device 100 can also detect the plug-in gun signal, and further correctly judge whether the charging port of the vehicle is inserted into the charging gun.

[0067] In yet another embodiment, the second control module 104 is used to: when the switch 24 is opened, if the first detection result and the second detection result are consistent, output the second detection result; if the first detection result and the second detection result are inconsistent, output the second detection result under the closed state of the switch 24.

[0068] For example, if the first detection result and the second detection result are both that the charging port of the vehicle is not connected to the charging gun, the second control module 104 outputs the second detection result, that is, outputs the connection state of the charging gun as that the charging port of the vehicle is not connected to the charging gun. For another example, if the first detection result is that the charging port of the vehicle is not connected to the charging gun, and the second detection result is that the charging port of the vehicle is connected to the charging gun, it is considered that the first pull-up power supply 11 in the first detection module 101 fails to supply power, the switch 24 is closed, the second pull-up power supply 21 is used to form a detection circuit, and the second detection result under the closed state of the switch 24 is output.

[0069] In this embodiment, according to whether the first detection result and the second detection result are consistent, it is judged whether the first pull-up power supply 11 in the first detection module 101 is faulty and cannot supply power normally, and when the first pull-up power supply 11 is faulty, the second control module 104 outputs the second detection result when the switch 24 is closed.

[0070] Figure 4 is a circuit diagram of a charging gun plug-in signal detection device provided in an exemplary embodiment of the present disclosure. As shown in Figure 4 The first detection module 101 and the second detection module 102 are connected to the charging port CC pin 100a of the vehicle through the input end of the charging gun plug-in signal detection device 100. The first detection module 101 outputs the first detection signal to the first control module 103 through the input end 103a of the first control module. The second detection module 102 outputs the second detection signal to the second control module 104 through the input end 104a of the second control module. The first control module 103 and the second control module 104 are communicatively connected (indicated by a dashed line). The remaining parts of the circuit diagram have been described in detail in the foregoing embodiments, and will not be described here.

[0071] The present disclosure also provides a charging gun plug-in signal detection method applied to a charging gun plug-in signal detection device. The detection device 100 includes a first detection module 101 and a second detection module 102.

[0072] The first detection module 101 is arranged in the on-board charger OBC and connected to the charging port CC pin of the vehicle, for detecting the plug-in signal and outputting the first detection signal.

[0073] The second detection module 102 is arranged in the battery management controller BMC and connected to the charging port CC pin, for detecting the plug-in signal and outputting the second detection signal.

[0074] Figure 5 is a flowchart of a charging gun plug-in signal detection method provided in an exemplary embodiment of the present disclosure. As shown in Figure 5 The method includes the following steps:

[0075] Step S11, the first control module 103 determines the first detection result according to the first detection signal;

[0076] Step S12, the second control module 104 determines the second detection result according to the second detection signal;

[0077] Step S13, the second control module 104 outputs the connection state of the charging gun according to the first detection result and the second detection result.

[0078] In yet another embodiment, the first detection module 101 comprises a first pull-up power supply 11, a first resistor 12 and an operational amplifier 13, the input end 101a of the first detection module 101 is connected to the charging port CC pin and connected to the first pull-up power supply 11 through the first resistor 12, and the input end 101a of the first detection module 101 is connected to the output end 101b of the first detection module 101 through the operational amplifier 13.

[0079] In yet another embodiment, the second detection module 102 comprises a second pull-up power supply 21, a second resistor 22, a third resistor 23, a switch 24, a comparator 25 and a power supply 26, the input end 102a of the second detection module 102 is connected to the charging port CC pin and connected to the second pull-up power supply 21 through the second resistor 22 and the switch 24 in sequence, the input end 102a of the second detection module 102 is connected to the first input end of the comparator, and the power supply 26 is connected to the second input end of the comparator through the third resistor 23, and the output end of the comparator is the output end 102b of the second detection module 102.

[0080] In yet another embodiment, the second control module 104 outputs the connection state of the charging gun according to the first detection result and the second detection result, comprising:

[0081] In the case that the switch 24 is open, if the first detection result and the second detection result are consistent, the second control module 104 outputs the second detection result;

[0082] If the first detection result and the second detection result are inconsistent, the second control module 104 controls the switch 24 to be closed and outputs the second detection result under the closed state of the switch 24.

[0083] In yet another embodiment, the method further comprises: if the first detection result and the second detection result are inconsistent, the second control module 104 outputs a prompt message of OBC failure.

[0084] The prompt message is a message for prompting the user of OBC failure, which can be graphic information on the vehicle instrument panel.

[0085] As to the method in the above embodiments, the specific manner of performing operations of each step has been described in detail in the embodiments of the device, which will not be described in detail here.

[0086] Figure 6 is a flowchart of a detection method of a charging gun insertion signal provided in yet another exemplary embodiment of the present disclosure. As shown in Figure 6 , the method comprises the following steps.

[0087] 1. BMC wakes up and starts the flow of detecting the connection state of the charging gun.

[0088] After starting the process of detecting the connection state of the charging gun, the BMC sends a default value of the connection state of the charging gun to the vehicle instrument. The default value of the connection state of the charging gun is preset by the designer, which is used to indicate that the detection of the connection state of the charging gun has not been completed. At the same time when the BMC sends the default value of the connection state of the charging gun to the vehicle instrument, the BMC and the OBC start to detect the connection state of the charging gun (i.e., the first control module 103 determines the first detection result according to the first detection signal, and the second control module 104 determines the second detection result according to the second detection signal). During this period, the BMC and the OBC are connected through the CAN line (i.e., the first control module 103 and the second control module 104 are connected in communication).

[0089] 2. Determine whether the BMC needs to independently detect (i.e., compare whether the first detection result and the second detection result are consistent).

[0090] 3. If it is determined that the BMC does not need to independently detect the connection state of the charging gun (i.e., the first detection result and the second detection result are consistent), the BMC outputs the connection state of the charging gun detected by the BMC (i.e., outputs the second detection result).

[0091] 4. If it is determined that the BMC needs to independently detect the connection state of the charging gun (i.e., the first detection result and the second detection result are inconsistent), it is determined that the OBC is faulty (at this time, the switch 24 is closed), the BMC independently detects the connection state of the charging gun, and outputs the connection state of the charging gun detected by the BMC (i.e., outputs the second detection result under the closed state of the switch 24).

[0092] 5. After starting the process of detecting the connection state of the charging gun, if it is identified that the communication between the BMC and the OBC is timed out during the execution of the above steps (including the detection of the connection state of the charging gun by the BMC and the OBC, and the determination of whether the BMC needs to independently detect), the BMC independently detects the connection state of the charging gun; after the BMC independently detects the connection state of the charging gun, the detection result is output as the connection state of the charging gun (i.e., the second control module 104 determines the second detection result according to the second detection signal, and outputs the second detection result as the connection state of the charging gun).

[0093] 6. When the exit condition is met, the process of detecting the connection state of the charging gun is exited. The exit condition can be that the vehicle is powered off.

[0094] By the technical solution, the on-vehicle charger and the battery management controller can independently detect whether the vehicle charging port is connected with the charging gun, and the second control module in the battery management controller outputs the connection state of the charging gun according to the second detection result and the first detection result. In this way, even if the on-vehicle charging system fails and power supply is lost, the connection state of the charging gun can be correctly judged, and the vehicle can be prevented from being driven in the case of being plugged into the charging gun, thereby improving the safety of the vehicle use.

[0095] The present disclosure also provides a vehicle comprising the detection device for the charging gun plugging signal.

[0096] The preferred embodiments of the present disclosure are described in detail above with reference to the drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0097] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0098] In addition, various different embodiments of the present disclosure can also be combined in any manner as long as they do not deviate from the idea of the present disclosure, and they should also be considered as disclosed by the present disclosure.

Claims

1. A device for detecting the charging gun insertion signal, characterized in that, The detection device (100) includes: The first detection module (101) is located in the OBC and connected to the CC pin of the vehicle's charging port. It is used to detect the plug-in signal and output the first detection signal. The second detection module (102) is located in the BMC and connected to the CC pin of the charging port. It is used to detect the insertion signal and output the second detection signal. A first control module (103) is disposed in the OBC and is used to determine a first detection result based on the first detection signal; The second control module (104) is located in the BMC and is used to determine the second detection result based on the second detection signal. The second control module (104) is also connected to the first control module (103) and is used to output the connection status of the charging gun based on the first detection result and the second detection result. The second control module (104) is also used to: control the second detection module (102) to independently detect the charging gun signal when the first detection result is inconsistent with the second detection result, and output the connection status of the charging gun according to the charging gun signal independently detected by the second detection module (102).

2. The detection device according to claim 1, characterized in that, The first detection module (101) includes a first pull-up power supply (11), a first resistor (12) and an operational amplifier (13). The input terminal (101a) of the first detection module (101) is connected to the CC pin of the charging port and is connected to the first pull-up power supply (11) through the first resistor (12). The input terminal (101a) of the first detection module (101) is connected to the output terminal (101b) of the first detection module (101) through the operational amplifier (13).

3. The detection device according to claim 2, characterized in that, The second detection module (102) includes a second pull-up power supply (21), a second resistor (22), a third resistor (23), a switch (24), a comparator (25), and a power supply (26). The input terminal (102a) of the second detection module (102) is connected to the CC pin of the charging port, and is connected to the second pull-up power supply (21) in sequence through the second resistor (22) and the switch (24). The input terminal (102a) of the second detection module (102) is connected to the first input terminal of the comparator. The power supply (26) is connected to the second input terminal of the comparator through the third resistor (23). The output terminal of the comparator is used as the output terminal (102b) of the second detection module (102).

4. The detection device according to claim 3, characterized in that, The second control module (104) is used for: When the switch (24) is open, if the first detection result and the second detection result are consistent, the second detection result is output; If the first detection result and the second detection result are inconsistent, the second detection result in the closed state of the switch (24) is output.

5. A method for detecting the charging gun insertion signal, applied to a device for detecting the charging gun insertion signal, characterized in that, The detection device (100) includes: The first detection module (101) is located in the OBC and connected to the CC pin of the vehicle's charging port. It is used to detect the plug-in signal and output the first detection signal. The second detection module (102) is located in the BMC and connected to the CC pin of the charging port. It is used to detect the insertion signal and output the second detection signal. The method includes: The first control module (103) determines the first detection result based on the first detection signal; The second control module (104) determines the second detection result based on the second detection signal; The second control module (104) outputs the connection status of the charging gun based on the first detection result and the second detection result; The second control module (104) is also used to: control the second detection module (102) to independently detect the charging gun signal when the first detection result is inconsistent with the second detection result, and output the connection status of the charging gun according to the charging gun signal independently detected by the second detection module (102).

6. The detection method according to claim 5, characterized in that, The first detection module (101) includes a first pull-up power supply (11), a first resistor (12) and an operational amplifier (13). The input terminal (101a) of the first detection module (101) is connected to the CC pin of the charging port and is connected to the first pull-up power supply (11) through the first resistor (12). The input terminal (101a) of the first detection module (101) is connected to the output terminal (101b) of the first detection module (101) through the operational amplifier (13).

7. The detection method according to claim 6, characterized in that, The second detection module (102) includes a second pull-up power supply (21), a second resistor (22), a third resistor (23), a switch (24), a comparator (25), and a power supply (26). The input terminal (102a) of the second detection module (102) is connected to the CC pin of the charging port, and is connected to the second pull-up power supply (21) in sequence through the second resistor (22) and the switch (24). The input terminal (102a) of the second detection module (102) is connected to the first input terminal of the comparator. The power supply (26) is connected to the second input terminal of the comparator through the third resistor (23). The output terminal of the comparator is used as the output terminal (102b) of the second detection module (102).

8. The detection method according to claim 7, characterized in that, The second control module (104) outputs the connection status of the charging gun based on the first detection result and the second detection result, including: When the switch (24) is open, if the first detection result and the second detection result are consistent, the second control module (104) outputs the second detection result; If the first detection result and the second detection result are inconsistent, the second control module (104) controls the switch (24) to close and outputs the second detection result in the closed state of the switch (24).

9. The detection method according to claim 8, characterized in that, The method further includes: If the first detection result and the second detection result are inconsistent, the second control module (104) outputs a prompt message indicating that the OBC is faulty.

10. A vehicle, characterized in that, The device includes the detection device for the charging gun insertion signal as described in any one of claims 1-4.

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