Charging gun anti-theft alarm system and method

Abstract

The invention relates to an anti-theft alarm system for a charging gun, and the system comprises a detection device which is disposed in the charging gun, and is used for detecting a guide voltage signal, a first temperature signal, and a second temperature signal of the charging gun; and the first controller is used for judging whether the charging gun is stolen or has a fault based on the guide voltage signal, the first temperature signal and the second temperature signal, and sending an alarm signal or a fault signal based on a judgment result. The invention further relates to an anti-theft alarm method for the charging gun. According to the charging gun, a plurality of signals are combined, so that the judgment is more accurate and reliable, and the charging gun does not need to be changed too much and the manufacturing cost of the charging gun is not increased because the detection device arranged in the charging gun is adopted for detection.

Description

Technical Field

[0001] This invention relates to the field of anti-theft for charging guns, and more specifically, to an anti-theft alarm system and method for charging guns. Background Technology

[0002] As a crucial interface component connecting charging stations and vehicles, the charging gun is the core bridge for energy transmission, and its integrity directly determines the availability of charging services. However, the theft of charging guns has become a prominent pain point restricting the operation of charging facilities. Due to the high value of charging guns and the fact that most charging stations adopt an unattended operation mode to control operating costs, theft cases are frequent and showing a rapid upward trend. Thieves often use tools such as hydraulic shears to cut the cable and steal the gun body, which not only directly causes operators to lose thousands to tens of thousands of yuan per unit, but also leads to the long-term shutdown of charging stations, seriously affecting the charging experience of electric vehicle users, and even triggering a chain reaction of charging resource shortages.

[0003] In traditional solutions, most charging stations rely solely on a mechanical locking mechanism after the charging gun is returned to its seat. If users fail to return the gun to the slot promptly after charging, it creates an opportunity for thieves. Some technologies employ on-site alarms, but some thieves will remove or damage these alarms beforehand, rendering them inaccurate. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a charging gun anti-theft alarm method and system that can accurately detect the theft of charging guns, in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by this invention to solve its technical problem is: to construct a charging gun anti-theft alarm system, comprising: A detection device is installed in the charging gun and is used to detect the charging gun's guide voltage signal, first temperature signal, and second temperature signal. The first controller is used to determine whether the charging gun has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal and the second temperature signal, and to send an alarm signal or a fault signal based on the determination result.

[0006] In the anti-theft alarm system for charging guns described in this invention, the detection device includes a first temperature sensor, a second temperature sensor, and a guiding detection device. The first temperature sensor, the second temperature sensor, and the guiding detection device are located in the head of the charging gun; The first temperature sensor is used to detect the first temperature signal, the second temperature sensor is used to detect the second temperature signal, and the guiding detection device is used to detect the guiding voltage signal.

[0007] In the charging gun anti-theft alarm system of the present invention, the first controller is used to determine whether the charging gun has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal, and the second temperature signal, and to send an alarm signal or a fault signal based on the determination result, including: The first controller is configured to determine that the charging gun has been stolen and send an alarm signal when the guiding voltage signal, the first temperature signal, and the second temperature signal are all abnormal; when the guiding voltage signal is abnormal, but the first temperature signal and the second temperature signal are normal, it is configured to determine that the guiding detection circuit is abnormal and send a first fault signal; when the guiding voltage signal is abnormal, and one of the first temperature signal and the second temperature signal is abnormal while the other is normal, it is configured to determine that the charging gun is faulty and send a second fault signal.

[0008] In the charging gun anti-theft alarm system of the present invention, the first controller is used to determine whether the charging gun has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal, and the second temperature signal, and to send an alarm signal or a fault signal based on the determination result, including: The first controller is used to first determine whether the guiding voltage is abnormal. When the guiding voltage is abnormal, it determines whether the first temperature signal is abnormal. When the first temperature signal is abnormal, it then determines whether the second temperature signal is abnormal. When the guiding voltage signal, the first temperature signal, and the second temperature signal are all abnormal, it determines that the charging gun has been stolen and sends an alarm signal. When the guiding voltage signal and the first temperature signal are abnormal, but the second temperature signal is normal, it determines that the charging gun is faulty and sends a second fault signal.

[0009] In the charging gun anti-theft alarm system of the present invention, the first controller is used to determine whether the charging gun has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal, and the second temperature signal, and to send an alarm signal or a fault signal based on the determination result, including: The first controller is used to first determine whether the guide voltage is abnormal. When the guide voltage is abnormal, it determines whether the first temperature signal is abnormal. When the first temperature signal is normal, it determines whether the second temperature signal is abnormal. When the guide voltage signal is abnormal, but the first and second temperature signals are normal, it determines that the guide detection circuit is abnormal and sends a first fault signal. When the guide voltage signal is abnormal, the first temperature signal is normal, and the second temperature signal is abnormal, it determines that the charging gun is faulty and sends a second fault signal.

[0010] In the anti-theft alarm system for charging guns described in this invention, the alarm signal includes an audible and visual alarm signal; The charging gun anti-theft alarm system further includes a first audible and visual alarm device, which is installed near the charging gun. The first controller controls the first audible and visual alarm device to issue an audible and visual alarm based on the audible and visual alarm signal; The first controller is further connected to the cloud platform for sending the alarm signal and the fault signal to the cloud platform.

[0011] The anti-theft alarm system for charging guns according to the present invention further includes a second controller, a display, and a second audible and visual alarm device; The second controller, the second audible and visual alarm device, and the display are installed in the alarm box; The alarm signal further includes a location signal; The second controller is communicatively connected to the cloud platform and / or the first controller to receive the audible and visual alarm signal and the positioning signal; The second controller is used to control the second audible and visual alarm device to issue an audible and visual alarm and to control the display to show the location signal.

[0012] In the anti-theft alarm system for charging guns described in this invention, the first controller and the second controller are connected via a CAN bus, and the first controller and the second controller are respectively connected to the cloud platform via a wireless network.

[0013] The technical solution adopted by this invention to solve its technical problem is: constructing a charging gun anti-theft alarm method, comprising: The guiding voltage signal, first temperature signal, and second temperature signal of the charging gun are detected by a detection device installed in the charging gun. Based on the guiding voltage signal, the first temperature signal, and the second temperature signal, it is determined that the charging gun has been stolen or is malfunctioning, and an alarm signal or fault signal is sent based on the determination result.

[0014] In the anti-theft alarm method for charging guns described in this invention, the method determines whether the charging gun has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal, and the second temperature signal, and sends an alarm signal or a fault signal based on the determination result, including: When the guiding voltage signal, the first temperature signal and the second temperature signal are all abnormal, it is determined that the charging gun has been stolen and an alarm signal is sent. When the guide voltage signal is abnormal, but the first temperature signal and the second temperature signal are normal, the guide detection circuit is determined to be abnormal and a first fault signal is sent. When the guiding voltage signal is abnormal, and one of the first temperature signal and the second temperature signal is abnormal while the other is normal, the charging gun is determined to be faulty and a second fault signal is sent.

[0015] In the anti-theft alarm method for charging guns described in this invention, the method determines whether the charging gun has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal, and the second temperature signal, and sends an alarm signal or a fault signal based on the determination result, including: First, determine if the guiding voltage is abnormal. If the guiding voltage is abnormal, determine if the first temperature signal is abnormal. If the first temperature signal is abnormal, then determine if the second temperature signal is abnormal. If the guiding voltage signal, the first temperature signal, and the second temperature signal are all abnormal, determine that the charging gun has been stolen and send an alarm signal. When the guiding voltage signal and the first temperature signal are abnormal, but the second temperature signal is normal, the charging gun is determined to be faulty and a second fault signal is sent.

[0016] In the anti-theft alarm method for charging guns described in this invention, the method determines whether the charging gun has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal, and the second temperature signal, and sends an alarm signal or a fault signal based on the determination result, including: First, determine whether the guiding voltage is abnormal. If the guiding voltage is abnormal, determine whether the first temperature signal is abnormal. If the first temperature signal is normal, determine whether the second temperature signal is abnormal. When the guide voltage signal is abnormal, but the first temperature signal and the second temperature signal are normal, the guide detection circuit is determined to be abnormal and a first fault signal is sent; when the guide voltage signal is abnormal, the first temperature signal is normal, and the second temperature signal is abnormal, the charging gun is determined to be faulty and a second fault signal is sent.

[0017] The anti-theft alarm system and method for charging guns of the present invention detects the guiding voltage signal, a first temperature signal, and a second temperature signal of the charging gun using a detection device installed on the charging gun; and determines whether the charging gun has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal, and the second temperature signal, and sends an alarm signal or a fault signal based on the determination result. Because multiple signals are combined, the determination is more accurate and reliable. Furthermore, since the detection is performed using a built-in detection device within the charging gun, minimal modifications to the charging gun are required, thus not increasing the manufacturing cost. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1This is a schematic block diagram of a preferred embodiment of the charging gun anti-theft alarm system of the present invention; Figure 2 This is a schematic diagram of another preferred embodiment of the charging gun anti-theft alarm system of the present invention; Figure 3 This is a schematic diagram of the charging gun part of the charging gun anti-theft alarm system of the present invention; Figure 4 This is a structural schematic diagram of the alarm box portion of the charging gun anti-theft alarm system of the present invention; Figure 5 This is a flowchart of a preferred embodiment of the anti-theft alarm method for charging guns of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] Figure 1 This is a schematic block diagram of a preferred embodiment of the anti-theft alarm system for charging guns of the present invention. Figure 1 As shown, the anti-theft alarm system for a charging gun of the present invention includes a detection device 100 and a controller 200. The detection device 100 is installed in the charging gun and is used to detect the guiding voltage signal, the first temperature signal, and the second temperature signal of the charging gun; the controller 200 is used to determine whether the charging gun has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal, and the second temperature signal, and to send an alarm signal or a fault signal based on the determination result.

[0021] The anti-theft alarm system for charging guns of the present invention detects the guiding voltage signal, a first temperature signal, and a second temperature signal of the charging gun using a detection device installed on the charging gun; and determines whether the charging gun has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal, and the second temperature signal, and sends an alarm signal or a fault signal based on the determination result. Because multiple signals are combined, the determination is more accurate and reliable. Furthermore, since the detection is performed using a detection device integrated into the charging gun, minimal modifications to the charging gun are required, thus not increasing the manufacturing cost.

[0022] Figure 2 This is a schematic diagram of another preferred embodiment of the charging gun anti-theft alarm system of the present invention; Figure 3 This is a schematic diagram of the charging gun part of the charging gun anti-theft alarm system of the present invention; Figure 4 This is a schematic diagram of the alarm box portion of the charging gun anti-theft alarm system of the present invention.

[0023] like Figures 2-4As shown, the anti-theft alarm system for the charging gun of the present invention includes a detection device 100 and a controller 200. The detection device 100 includes a temperature sensor 110, a temperature sensor 120, and a guiding detection device 130; the temperature sensor 110, the temperature sensor 120, and the guiding detection device 130 are located in the head of the charging gun 300; the temperature sensor 110 is used to detect a first temperature signal, the temperature sensor 120 is used to detect a second temperature signal, and the guiding detection device 130 is used to detect a guiding voltage signal.

[0024] The controller 200 is used to determine whether the charging gun 300 has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal and the second temperature signal, and to send an alarm signal or a fault signal based on the determination result.

[0025] Specifically, the controller 200 is configured to determine that the charging gun 300 has been stolen and send an alarm signal when the guiding voltage signal, the first temperature signal, and the second temperature signal are all abnormal; when the guiding voltage signal is abnormal, but the first temperature signal and the second temperature signal are normal, the controller 200 determines that the guiding detection circuit is abnormal and sends a first fault signal; when the guiding voltage signal is abnormal, and either the first temperature signal or the second temperature signal is normal, the controller determines that the charging gun 300 is faulty and sends a second fault signal.

[0026] In a preferred embodiment of the present invention, the controller 200 is configured to first determine whether the guiding voltage is abnormal; when the guiding voltage is abnormal, determine whether the first temperature signal is abnormal; when the first temperature signal is abnormal, determine whether the second temperature signal is abnormal; when the guiding voltage signal, the first temperature signal, and the second temperature signal are all abnormal, determine that the charging gun 300 has been stolen and send an alarm signal; when the guiding voltage signal and the first temperature signal are abnormal, but the second temperature signal is normal, determine that the charging gun 300 is faulty and send a second fault signal.

[0027] In a preferred embodiment of the present invention, the controller 200 is configured to first determine whether the guide voltage is abnormal; when the guide voltage is abnormal, determine whether the first temperature signal is abnormal; when the first temperature signal is normal, determine whether the second temperature signal is abnormal; when the guide voltage signal is abnormal, and the first and second temperature signals are normal, determine that the guide detection circuit is abnormal and send a first fault signal; when the guide voltage signal is abnormal, the first temperature signal is normal, and the second temperature signal is abnormal, determine that the charging gun 300 is faulty and send a second fault signal.

[0028] In a preferred embodiment of the present invention, the controller 200 is configured to simultaneously determine whether the guide voltage signal, the first temperature signal, and the second temperature signal are abnormal, and when all three are abnormal, the controller determines that the charging gun has been stolen and sends an alarm signal; when the guide voltage signal is abnormal, but the first and second temperature signals are normal, the controller determines that the guide detection circuit is abnormal and sends a first fault signal; when the guide voltage signal is abnormal, and one of the first and second temperature signals is abnormal while the other is normal, the controller determines that the charging gun is faulty and sends a second fault signal.

[0029] In a preferred embodiment of the present invention, the controller 200 may determine the abnormality of the guide voltage signal, the normality of the first temperature signal, and the second temperature signal in any suitable order, all of which fall within the protection scope of the present invention.

[0030] In a preferred embodiment of the present invention, the alarm signal includes an audible and visual alarm signal; the charging gun anti-theft alarm system further includes an audible and visual alarm device 410, which is installed near the charging gun 300; the controller 200 controls the audible and visual alarm device 410 to emit an audible and visual alarm based on the audible and visual alarm signal. The audible and visual alarm device 410 can be installed on the charging pile 800. The controller 200 can be communicatively connected to the cloud platform 510 to send the alarm signal and the fault signal to the cloud platform 510.

[0031] In a preferred embodiment of the present invention, the charging gun anti-theft alarm system further includes a controller 610, an audible and visual alarm device 620, and a display 630; the controller 610, the audible and visual alarm device 620, and the display 630 are installed in an alarm box 600; the alarm signal further includes a positioning signal.

[0032] The controller 610 is communicatively connected to the cloud platform 510 and / or the controller 200 to receive the audible and visual alarm signal and the positioning signal. The controller 610 controls the audible and visual alarm device 620 to issue an audible and visual alarm based on the audible and visual alarm signal, and controls the display 630 to display the positioning signal. The controller 200 and the controller 610 are communicatively connected via a CAN bus, and the controller 200 and the controller 610 are respectively communicatively connected to the cloud platform 510 via a wireless network (e.g., a 4G antenna 520 or a 5G antenna).

[0033] In a preferred embodiment of the present invention, the guiding voltage signal, the first temperature signal, and the second temperature signal may refer to an abnormal status signal, or no status signal being received, or no signal being received at all.

[0034] In this preferred embodiment, the charging gun anti-theft alarm system of the present invention can be divided into two parts. The first part is the charging pile, on which the controller 200, the audible and visual alarm device 410, and the 4G antenna are all installed, and the charging gun 300 is electrically connected to the charging pile. The temperature sensor 110, the temperature sensor 120, and the guiding detection device 130 are located in the head of the charging gun 300. The second part is the alarm box 600, in which the controller 610, the audible and visual alarm device 620, and the display 630 are installed. The charging pile is generally located at the charging station, and the alarm box is located in the duty room, security room, or relevant management department of the site.

[0035] When the charging pile is close to the on-site duty room or security room, the charging pile and alarm box can be connected via a communication line; when the charging pile is far from the duty room or security room or not in the same site, it is connected via a cloud platform. When the charging gun is normal, the temperature sensor 110, the temperature sensor 120, and the guiding detection device 130 operate normally, and all detected signals are normal. That is, the guiding voltage signal, the first temperature signal, and the second temperature signal are all normal signals. The controller 200 is used to determine that the charging gun 300 has been stolen and send an alarm signal when the guiding voltage signal, the first temperature signal, and the second temperature signal are all abnormal; when the guiding voltage signal is abnormal, but the first and second temperature signals are normal, it determines that the guiding detection circuit is abnormal and sends a first fault signal; when the guiding voltage signal is abnormal, and one of the first and second temperature signals is abnormal while the other is normal, it determines that the charging gun 300 is faulty and sends a second fault signal.

[0036] For example, when the controller 200 determines that the guide voltage signal is abnormal, it can first check whether the first temperature signal is normal. If it is normal, it means that the temperature sensor 110 is normal, indicating a fault in the guide monitoring circuit, which needs to be checked and repaired. If the first temperature signal is abnormal, it may indicate that the temperature sensor 110 is faulty, or the charging gun may have been cut and stolen. In this case, it further checks the second temperature signal. If it is normal, it means that the temperature sensor 120 is normal, indicating a fault in the charging gun, which needs to be checked and repaired. If the second temperature signal is also abnormal at this time, it indicates that the temperature sensor 120 is faulty. If all three signals are abnormal at this time, it is very likely that the charging gun cable has been cut or damaged, triggering the alarm stage.

[0037] When a broken charging gun is detected, controller 200 activates the audible and visual alarm 410 and simultaneously uploads the on-site status to the cloud platform. At this time, the audible and visual alarm 410 flashes lights and sounds an alarm, triggering the on-site emergency response plan. If the duty room is close to the charging pile, controller 200 communicates directly with controller 610, triggering the alarm box in the duty room. If the duty room is far from the charging pile or not in the same site, the cloud platform sends a fault signal to the alarm box in the duty room. Upon receiving the abnormal information, controller 610 in the alarm box activates the audible and visual alarm 620, and the display screen shows the site and equipment number (i.e., location information) corresponding to the abnormal charging gun. Duty personnel or security guards can quickly locate the abnormal charging equipment through the display screen.

[0038] The charging gun anti-theft alarm system of this invention is based on the existing charging gun structure. It confirms whether the charging gun has been cut or damaged by a combination of various signals. Only the corresponding software needs to be modified, which greatly saves product costs. Taking into full account the inconvenience of unattended stations and on-site environments, the system is linked through an alarm box to achieve the purpose of effective alarm, which allows relevant personnel to respond in a timely manner and avoid further losses.

[0039] The present invention also discloses a charging gun anti-theft alarm method, comprising: detecting the charging gun's guide voltage signal, first temperature signal, and second temperature signal through a detection device installed in the charging gun; determining whether the charging gun has been stolen or is malfunctioning based on the guide voltage signal, the first temperature signal, and the second temperature signal, and sending an alarm signal or a fault signal based on the determination result.

[0040] In a preferred embodiment of the present invention, determining whether the charging gun is stolen or malfunctioning based on the guide voltage signal, the first temperature signal, and the second temperature signal, and sending an alarm signal or a fault signal based on the determination result, includes: when the guide voltage signal, the first temperature signal, and the second temperature signal are all abnormal, determining that the charging gun is stolen and sending an alarm signal; when the guide voltage signal is abnormal, but the first temperature signal and the second temperature signal are normal, determining that the guide detection circuit is abnormal and sending a first fault signal; when the guide voltage signal is abnormal, and one of the first temperature signal and the second temperature signal is abnormal while the other is normal, determining that the charging gun is malfunctioning and sending a second fault signal.

[0041] In a preferred embodiment of the present invention, determining whether the charging gun is stolen or malfunctioning based on the guide voltage signal, the first temperature signal, and the second temperature signal, and sending an alarm signal or a fault signal based on the determination result, includes: first determining whether the guide voltage is abnormal; when the guide voltage is abnormal, determining whether the first temperature signal is abnormal; when the first temperature signal is abnormal, determining whether the second temperature signal is abnormal; when the guide voltage signal, the first temperature signal, and the second temperature signal are all abnormal, determining that the charging gun is stolen and sending an alarm signal; when the guide voltage signal and the first temperature signal are abnormal, but the second temperature signal is normal, determining that the charging gun is malfunctioning and sending a second fault signal.

[0042] In a preferred embodiment of the present invention, determining whether the charging gun is stolen or malfunctioning based on the guide voltage signal, the first temperature signal, and the second temperature signal, and sending an alarm signal or a fault signal based on the determination result, includes: first determining whether the guide voltage is abnormal; when the guide voltage is abnormal, determining whether the first temperature signal is abnormal; when the first temperature signal is normal, determining whether the second temperature signal is abnormal; when the guide voltage signal is abnormal, and the first and second temperature signals are normal, determining that the guide detection circuit is abnormal and sending a first fault signal; when the guide voltage signal is abnormal, the first temperature signal is normal, and the second temperature signal is abnormal, determining that the charging gun is malfunctioning and sending a second fault signal. Here, it can be adopted... Figures 1-4 The aforementioned charging gun anti-theft alarm method can be implemented in any charging gun anti-theft alarm system.

[0043] Figure 5 This is a flowchart of a preferred embodiment of the anti-theft alarm method for charging guns of the present invention. For example... Figure 5As shown, when the charging gun is functioning normally, the guiding voltage signal, the first temperature signal, and the second temperature signal are all normal. When the controller 200 detects an abnormality in the guiding voltage signal, it first checks whether the temperature sensor 110 is functioning normally (i.e., whether the first temperature signal is functioning normally). If the temperature sensor 110 is functioning normally, it indicates a fault in the guiding monitoring circuit, requiring inspection and repair. If the temperature sensor 110 is faulty, it further checks whether the temperature sensor 120 is functioning normally (i.e., whether the second temperature signal is functioning normally). If the temperature sensor 120 is functioning normally, it indicates a fault in the charging gun, requiring inspection and repair. If the temperature sensor 120 is faulty, it indicates that all three signal lines are disconnected simultaneously, suggesting that the charging gun cable has been cut or damaged, and the system enters the alarm phase. When the charging gun is detected to be cut, the controller 200 activates the audible and visual alarm 410 and simultaneously uploads the on-site status to the platform. At this time, the audible and visual alarm 410 flashes a light and sounds an alarm, triggering the on-site emergency response plan. If the duty room is close to the charging pile, the controller 200 communicates directly with the controller 610, triggering the alarm box in the duty room. If the duty room is far from the charging station or not in the same site, the platform will send a fault signal to the alarm box in the duty room. Upon receiving the abnormal information, the controller 610 in the alarm box will activate the audible and visual alarm 620, and simultaneously display the site and equipment number corresponding to the abnormal charging gun on the screen. Duty personnel or security guards can quickly locate the abnormal charging equipment through the display screen.

[0044] In this invention, the charging gun anti-theft alarm method can be based on Figures 1-4 The implementation of any charging gun anti-theft alarm system is not detailed here.

[0045] Although the present invention has been described through specific embodiments, those skilled in the art will understand that various modifications and equivalent substitutions can be made to the invention without departing from its scope. Furthermore, various modifications can be made to the invention for specific situations or materials without departing from its scope. Therefore, the present invention is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A charging gun anti-theft alarm system, characterized in that, include: A detection device is installed in the charging gun and is used to detect the charging gun's guide voltage signal, first temperature signal, and second temperature signal. The first controller is used to determine whether the charging gun has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal and the second temperature signal, and to send an alarm signal or a fault signal based on the determination result.

2. The anti-theft alarm system for charging guns according to claim 1, characterized in that, The detection device includes a first temperature sensor, a second temperature sensor, and a guiding detection device; The first temperature sensor, the second temperature sensor, and the guiding detection device are located in the head of the charging gun; The first temperature sensor is used to detect the first temperature signal, the second temperature sensor is used to detect the second temperature signal, and the guiding detection device is used to detect the guiding voltage signal.

3. The anti-theft alarm system for charging guns according to claim 1 or 2, characterized in that, The first controller is configured to determine whether the charging gun has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal, and the second temperature signal, and to send an alarm signal or a fault signal based on the determination result, including: The first controller is configured to determine that the charging gun has been stolen and send an alarm signal when the guiding voltage signal, the first temperature signal, and the second temperature signal are all abnormal; when the guiding voltage signal is abnormal, but the first temperature signal and the second temperature signal are normal, it is configured to determine that the guiding detection circuit is abnormal and send a first fault signal; when the guiding voltage signal is abnormal, and one of the first temperature signal and the second temperature signal is abnormal while the other is normal, it is configured to determine that the charging gun is faulty and send a second fault signal.

4. The anti-theft alarm system for charging guns according to claim 1 or 2, characterized in that, The first controller is configured to determine whether the charging gun has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal, and the second temperature signal, and to send an alarm signal or a fault signal based on the determination result, including: The first controller is used to first determine whether the guiding voltage is abnormal. When the guiding voltage is abnormal, it determines whether the first temperature signal is abnormal. When the first temperature signal is abnormal, it then determines whether the second temperature signal is abnormal. When the guiding voltage signal, the first temperature signal, and the second temperature signal are all abnormal, it determines that the charging gun has been stolen and sends an alarm signal. When the guiding voltage signal and the first temperature signal are abnormal, but the second temperature signal is normal, it determines that the charging gun is faulty and sends a second fault signal.

5. The anti-theft alarm system for charging guns according to claim 1 or 2, characterized in that, The first controller is configured to determine whether the charging gun has been stolen or is malfunctioning based on the guiding voltage signal, the first temperature signal, and the second temperature signal, and to send an alarm signal or a fault signal based on the determination result, including: The first controller is used to first determine whether the guide voltage is abnormal. When the guide voltage is abnormal, it determines whether the first temperature signal is abnormal. When the first temperature signal is normal, it determines whether the second temperature signal is abnormal. When the guide voltage signal is abnormal, but the first and second temperature signals are normal, it determines that the guide detection circuit is abnormal and sends a first fault signal. When the guide voltage signal is abnormal, the first temperature signal is normal, and the second temperature signal is abnormal, it determines that the charging gun is faulty and sends a second fault signal.

6. The anti-theft alarm system for charging guns according to claim 1 or 2, characterized in that, The alarm signals include audible and visual alarm signals; The charging gun anti-theft alarm system further includes a first audible and visual alarm device, which is installed near the charging gun. The first controller controls the first audible and visual alarm device to issue an audible and visual alarm based on the audible and visual alarm signal; The first controller is further connected to the cloud platform for sending the alarm signal and the fault signal to the cloud platform.

7. The anti-theft alarm system for charging guns according to claim 6, characterized in that, It further includes a second controller, a display, and a second audible and visual alarm device; The second controller, the second audible and visual alarm device, and the display are installed in the alarm box; The alarm signal further includes a location signal; The second controller is communicatively connected to the cloud platform and / or the first controller to receive the audible and visual alarm signal and the positioning signal; The second controller is used to control the second audible and visual alarm device to issue an audible and visual alarm and to control the display to show the location signal.

8. The anti-theft alarm system for charging guns according to claim 7, characterized in that, The first controller and the second controller are connected via a CAN bus, and the first controller and the second controller are respectively connected to the cloud platform via a wireless network.

9. A method for issuing an anti-theft alarm for a charging gun, characterized in that, include: The guiding voltage signal, first temperature signal, and second temperature signal of the charging gun are detected by a detection device installed in the charging gun. Based on the guiding voltage signal, the first temperature signal, and the second temperature signal, it is determined that the charging gun has been stolen or is malfunctioning, and an alarm signal or fault signal is sent based on the determination result.

10. The anti-theft alarm method for charging guns according to claim 9, characterized in that, Based on the guiding voltage signal, the first temperature signal, and the second temperature signal, it is determined whether the charging gun has been stolen or is malfunctioning, and an alarm signal or fault signal is sent based on the determination result, including: When the guiding voltage signal, the first temperature signal and the second temperature signal are all abnormal, it is determined that the charging gun has been stolen and an alarm signal is sent. When the guide voltage signal is abnormal, but the first temperature signal and the second temperature signal are normal, the guide detection circuit is determined to be abnormal and a first fault signal is sent. When the guiding voltage signal is abnormal, and one of the first temperature signal and the second temperature signal is abnormal while the other is normal, the charging gun is determined to be faulty and a second fault signal is sent.

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