Charging cabinet abnormity processing device and charging cabinet

Abstract

The embodiment of the invention relates to a charging cabinet abnormity processing device and a charging cabinet. The processing device for the abnormity of the charging cabinet comprises a main control board of the charging cabinet, a release and a grounding detection circuit connected between the release and the main control board, the release is connected with the power line, and the power line is used for supplying power to the charging cabinet through the release. The grounding detection circuit is used for performing grounding detection on the charging cabinet in real time and sending the grounding voltage, obtained through grounding detection, of the charging cabinet to the main control board; under the condition that the grounding detection result meets the alarm condition, the release and the power line are controlled to be separated from each other; and the main control board is used for determining whether the charging cabinet has a poor grounding fault at present according to the grounding voltage acquired in real time, and outputting alarm prompt information and operation and maintenance prompt information under the condition of determining that the charging cabinet has the poor grounding fault at present. By adopting the charging cabinet abnormity processing device, the abnormal condition of the charging cabinet can be processed in time, and the charging safety is improved.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the field of charging technology, and in particular to a charging cabinet abnormality processing device and a charging cabinet. Background Art

[0002] For example, electric vehicles such as shared electric vehicles are currently widely used. Charging cabinets can be used to charge the batteries of electric vehicles. Among them, the charging cabinet needs to be connected to the mains power supply during normal operation, and users will frequently touch the cabinet during normal operation.

[0003] In the related art, when installing the charging cabinet, grounding is generally achieved by driving piles. If the charging cabinet is poorly grounded due to poor pile driving or other installation processes, users will be at risk of electric shock when they touch the cabinet body when using the cabinet, which poses a safety hazard. Therefore, it is urgent to avoid the safety risks of the charging cabinet and deal with abnormal situations of the charging cabinet in a timely manner. Summary of the invention

[0004] The embodiments of the present disclosure provide a charging cabinet abnormality processing device and a charging cabinet, which can be used to promptly process abnormal conditions of the charging cabinet and improve charging safety.

[0005] In a first aspect, an embodiment of the present disclosure provides a device for processing an abnormality of a charging cabinet, the device comprising a main control board of the charging cabinet, a tripper and a grounding detection circuit connected between the tripper and the main control board; the tripper is connected to a power line, and the power line is used to supply power to the charging cabinet through the tripper; the grounding detection circuit is used to perform a grounding detection on the charging cabinet in real time and send the grounding voltage of the charging cabinet obtained by the grounding detection to the main control board; and when the grounding detection result meets the alarm condition, the tripper is controlled to be disconnected from the power line; the main control board is used to determine whether the charging cabinet currently has a poor grounding fault based on the grounding voltage obtained in real time, and when it is determined that the charging cabinet currently has a poor grounding fault, output an alarm prompt message and output an operation and maintenance prompt message.

[0006] In one embodiment, the ground detection circuit includes a load circuit and a load voltage monitoring circuit; the two ends of the load circuit are respectively connected to the neutral line and the ground line of the power line through the release; the load voltage monitoring circuit is used to detect the load voltage of the load circuit in real time, and send the load voltage as the ground voltage to the main control board; the load voltage monitoring circuit is also used to determine that the alarm condition is met when the load voltage is greater than the first alarm voltage value.

[0007] In one embodiment, the load circuit includes a fixed load and an alarm indicator light connected in series; the load voltage monitoring circuit is connected in parallel with the fixed load, and is used to detect the voltage of the fixed load in real time to obtain the load voltage of the load circuit; the alarm indicator light is used to perform an alarm action when the current passing through the alarm indicator light is greater than a preset current value; the alarm action includes at least one of lighting the alarm indicator light and flashing the alarm indicator light.

[0008] In one embodiment, the load circuit further includes a first diode connected between the neutral line and the alarm indicator light; the first diode is used to filter the alternating current on the load circuit.

[0009] In one of the embodiments, the device also includes a tripping drive circuit connected to the load voltage monitoring circuit and the tripper; the load voltage monitoring circuit is used to send a drive signal to the tripping drive circuit when an alarm condition is met; and the tripping drive circuit is used to control the tripping of the tripper according to the drive signal so that the tripper and the power line are disconnected from each other.

[0010] In one of the embodiments, the main control board is specifically used to generate operation and maintenance prompt information, and send the operation and maintenance prompt information to a server that is communicatively connected to the main control board; the operation and maintenance prompt information is used to instruct the server to generate an operation and maintenance work order based on the information of the charging cabinet included in the operation and maintenance prompt information, and send the operation and maintenance work order to the target operation and maintenance account.

[0011] In one of the embodiments, the main control board is specifically used to compare the ground voltage with a second alarm voltage value. If the ground voltage is greater than the second alarm voltage value, it is determined that the charging cabinet currently has a poor grounding fault; wherein the second alarm voltage value is issued by a server that is communicated with the main control board.

[0012] In one embodiment, the device also includes a live-to-neutral switch connected between the power line and the release; the live-to-neutral switch is used to automatically identify the neutral wire and the live wire of the power line, and automatically correct the connection between the neutral wire and the live wire in the event of a wiring error.

[0013] In one of the embodiments, the device also includes a backup power supply and an ACDC module, the ACDC module is connected between the release and the main control board; the ACDC module is used to convert the alternating current provided by the power line through the release to power the main control board; the backup power supply is used to power the main control board when the release is tripped.

[0014] In one of the embodiments, the main control board is specifically used to control at least one of the sound and light alarm, screen display, indicator light and voice component to output the corresponding type of alarm prompt information when it is determined that the charging cabinet currently has a poor grounding fault.

[0015] In a second aspect, an embodiment of the present disclosure provides a charging cabinet, which includes a charging cabinet abnormality processing device as described in any one of the first aspects above.

[0016] The present disclosure provides a charging cabinet abnormality processing device and a charging cabinet, wherein the charging cabinet abnormality device includes a main control board of the charging cabinet, a tripper, and a grounding detection circuit connected between the tripper and the main control board; the tripper is connected to a power line, and the power line is used to supply power to the charging cabinet through the tripper; the grounding detection circuit is used to perform grounding detection on the charging cabinet in real time and send the grounding voltage of the charging cabinet obtained by the grounding detection to the main control board; and when the grounding detection result meets the alarm condition, the tripper is controlled to be separated from the power line; the main control board is used to determine whether the charging cabinet currently has a poor grounding fault according to the grounding voltage obtained in real time, and when it is determined that the charging cabinet currently has a poor grounding fault, output an alarm prompt message and output an operation and maintenance prompt message. In this way, the tripper is controlled to be separated from the power line when the alarm condition is met through the grounding detection circuit, so that the power line stops supplying power to the charging cabinet, that is, the charging cabinet is powered off, thereby timely avoiding the risk of electric shock caused by contact with the cabinet when the user uses the charging cabinet, thereby improving the safety of the user when using the charging cabinet. In addition, the main control board outputs alarm prompt information and operation and maintenance prompt information when the grounding is poor, warning users that the charging cabinet has safety risks and asking them to stay away from it in time. The operation and maintenance prompt information can also be used to promptly repair abnormal problems in the charging cabinet, effectively ensuring user safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a device for processing abnormalities of a charging cabinet in one embodiment;

[0018] Figure 2 A schematic diagram of line connection in one embodiment;

[0019] Figure 3 It is a structural schematic diagram of a device for processing abnormalities of a charging cabinet in another embodiment;

[0020] Figure 4 It is a structural schematic diagram of a device for processing abnormalities of a charging cabinet in another embodiment;

[0021] Figure 5 It is a structural schematic diagram of a device for processing abnormalities of a charging cabinet in another embodiment;

[0022] Figure 6 It is a structural schematic diagram of a device for processing abnormalities of a charging cabinet in another embodiment;

[0023] Figure 7 It is a structural schematic diagram of a device for processing abnormalities of a charging cabinet in another embodiment;

[0024] Figure 8 It is a structural schematic diagram of a device for processing abnormalities of a charging cabinet in another embodiment;

[0025] Fig. 9 It is a structural schematic diagram of a device for processing abnormalities of a charging cabinet in another embodiment;

[0026] Fig.10 It is a structural schematic diagram of a device for processing abnormalities of a charging cabinet in another embodiment;

[0027] Fig.11 It is a schematic diagram of an automatic ground fault processing and alarm system of a charging cabinet in one embodiment. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure more clear, the embodiments of the present disclosure are further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of the present disclosure and are not used to limit the embodiments of the present disclosure.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0032] In the present disclosure, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0034] First, before specifically introducing the technical solution of the embodiment of the present disclosure, the technical background or technical evolution context on which the embodiment of the present disclosure is based is introduced. Generally speaking, in the field of vehicle travel, the current technical background is: with the rapid promotion of shared electric vehicles and C-end battery replacement services in various regions, the number of shared batteries has increased dramatically. Charging cabinets are an effective way to supplement and replace these shared batteries. Among them, the charging cabinet needs to be connected to the mains during normal operation, and users will frequently contact the cabinet during normal operation. Therefore, good grounding of the cabinet is an important guarantee for the safety of the cabinet. In the related art, the charging cabinet is generally grounded by driving piles when it is installed. Based on this background, the applicant has found through long-term research and the collection, demonstration and verification of experimental data that if the charging cabinet is poorly grounded due to poor piling effect or other installation processes, the user will be at risk of electric shock when touching the cabinet when using the charging cabinet, and there is a safety hazard. That is, the safety risks of the charging cabinet are avoided, and the problem of timely handling of abnormal conditions of the charging cabinet needs to be solved urgently. In addition, it should be noted that the applicant has devoted a lot of creative work from determining the above technical problems to the technical solutions introduced in the following embodiments.

[0035] In view of this, the embodiment of the present application provides a charging cabinet abnormality processing device, which can detect the grounding effect in real time and with high precision when the charging cabinet is powered on. When poor grounding is detected, an alarm is immediately issued and an operation and maintenance work order is issued to notify the operation and maintenance to inspect. At the same time, the release can be actively controlled to disconnect the mains power when the alarm conditions are met to avoid electric shock to users. This can greatly improve the safety of the charging cabinet and avoid safety risks, which is of great significance to improving the business operation efficiency and operational safety of the charging cabinet.

[0036] The following introduces the technical solution of the charging cabinet abnormality processing device involved in the embodiment of the present disclosure in combination with the scenario to which the embodiment of the present disclosure is applied.

[0037] In one embodiment, Figure 1 As shown, a charging cabinet abnormality processing device is provided, which includes a main control board of the charging cabinet, a trip device and a grounding detection circuit connected between the trip device and the main control board; the trip device is connected to the power line, and the power line is used to supply power to the charging cabinet through the trip device; the grounding detection circuit is used to perform grounding detection on the charging cabinet in real time and send the grounding voltage of the charging cabinet obtained by the grounding detection to the main control board; and when the grounding detection result meets the alarm condition, the trip device and the power line are controlled to be disconnected from each other; the main control board is used to determine whether the charging cabinet currently has a poor grounding fault based on the grounding voltage obtained in real time, and when it is determined that the charging cabinet currently has a poor grounding fault, output an alarm prompt information and output an operation and maintenance prompt information.

[0038] Among them, the charging cabinet needs to be connected to a power source for normal operation. The power cord is the source of AC power, which supplies power to the charging cabinet and the main control board of the charging cabinet.

[0039] The power line is connected to the release, and the release is further connected to the ground detection circuit. Figure 2 In the line connection diagram shown in FIG. 1 , the release is connected to the live wire (L), neutral wire (N) and ground wire (PE) of the power line respectively. The ground detection circuit needs to implement ground detection. Therefore, the ground detection circuit can be connected to the neutral wire and ground wire of the power line respectively through the release, so as to obtain the ground voltage of the charging cabinet, so as to determine whether there is a poor grounding fault based on the ground voltage.

[0040] The grounding detection circuit is connected to the release to detect the grounding of the power cord, that is, to detect the grounding of the charging cabinet, so as to obtain the grounding voltage of the charging cabinet. Based on the grounding voltage, it is judged whether the alarm condition is met. If the alarm condition is met, it means that the current grounding voltage is abnormal and there may be a poor grounding fault. Therefore, the grounding detection circuit controls the release to work so that the release and the power cord are separated from each other. In this way, the power cord can be separated from the charging cabinet to stop supplying power to the charging cabinet, thereby timely avoiding the risk of electric shock when the user touches the charging cabinet due to a poor grounding fault.

[0041] In addition, the grounding detection circuit is also connected to the main control board. The main control board is the main controller of the entire charging cabinet and the core module of the charging cabinet, which is used to control the various working processes of the charging cabinet. The main control board obtains the grounding voltage fed back by the grounding detection circuit in real time. The main control board is deployed with poor grounding fault detection conditions. The main control board determines whether there is a poor grounding fault based on the grounding voltage and poor grounding fault detection conditions. If so, an alarm prompt message is output so that the user can stay away from the cabinet in time after receiving the alarm prompt message, reduce the risk of electric shock, and ensure user safety.

[0042] In addition, the main control board also outputs operation and maintenance prompt information, so that the operation and maintenance personnel can repair the charging cabinet in time based on the operation and maintenance prompt information and ensure that the charging cabinet is grounded normally as soon as possible.

[0043] It can be understood that no matter whether the ground voltage meets the alarm condition, the ground detection circuit sends the collected ground voltage to the main control board in real time.

[0044] In one scenario, the main control board first determines that the charging cabinet currently has a poor grounding fault based on the grounding voltage, and outputs an alarm prompt message and an operation and maintenance prompt message. Then, in the subsequent detection process, the grounding detection circuit detects that the grounding voltage meets the alarm condition, and controls the release to disconnect from the power cord.

[0045] In the charging cabinet abnormality processing device provided by the embodiment of the present disclosure, the charging cabinet abnormality device includes a main control board of the charging cabinet, a tripper and a grounding detection circuit connected between the tripper and the main control board; the tripper is connected to the power line, and the power line is used to supply power to the charging cabinet through the tripper; the grounding detection circuit is used to perform grounding detection on the charging cabinet in real time and send the grounding voltage of the charging cabinet obtained by the grounding detection to the main control board; and when the grounding detection result meets the alarm condition, the tripper is controlled to be separated from the power line; the main control board is used to determine whether the charging cabinet currently has a poor grounding fault according to the grounding voltage obtained in real time, and when it is determined that the charging cabinet currently has a poor grounding fault, output an alarm prompt information and output an operation and maintenance prompt information. In this way, the tripper and the power line are controlled to be separated from each other by the grounding detection circuit when the alarm condition is met, so as to stop the power line from supplying power to the charging cabinet, that is, the charging cabinet is powered off, thereby timely avoiding the risk of electric shock caused by contact with the cabinet when the user uses the charging cabinet, thereby improving the safety of the user when using the charging cabinet. In addition, the main control board outputs alarm prompt information and operation and maintenance prompt information when the grounding is poor, warning users that the charging cabinet has safety risks and asking them to stay away from it in time. The operation and maintenance prompt information can also be used to promptly repair abnormal problems in the charging cabinet, effectively ensuring user safety.

[0046] In one embodiment, Figure 3The charging cabinet abnormality processing device shown in the figure also includes a live-to-zero switch connected between the power line and the trip unit; the live-to-zero switch is used to automatically identify the neutral line and the live line of the power line, and automatically correct the connection between the neutral line and the live line in the event of a wiring error.

[0047] That is, the live-zero switch is connected to the power line. The release is connected to the live-zero switch to achieve connection with the power line. During the power supply process, the live-zero switch automatically identifies whether the live and neutral wires of the power line are connected correctly. If there is a connection error, the connection between the live and neutral wires is automatically switched and corrected to ensure that the subsequent release, grounding detection circuit, and charging cabinet are connected to the actual neutral and grounding wires, avoiding false detection, ensuring correct grounding detection and normal power supply, and ensuring the accuracy of the grounding alarm.

[0048] Next, the structure of the ground detection circuit is described.

[0049] In one embodiment, Figure 4 The charging cabinet abnormality processing device shown. Among them, the grounding detection circuit in the charging cabinet abnormality processing device includes a load circuit and a load voltage monitoring circuit; the two ends of the load circuit are respectively connected to the neutral line and the ground line of the power line through a release; the load voltage monitoring circuit is used to detect the load voltage of the load circuit in real time, and send the load voltage as the grounding voltage to the main control board; the load voltage monitoring circuit is also used to determine that the alarm condition is met when the load voltage is greater than the first alarm voltage value.

[0050] The load circuit is connected in series between the neutral line and the ground line. Optionally, the load circuit includes a fixed load with a preset resistance value.

[0051] When the power line is poorly grounded, the voltage value between the neutral line and the ground line increases. If it increases to a certain range, a safety risk will occur. Among them, when the voltage value between the neutral line and the ground line increases, the voltage drop on the load circuit also increases to a certain range. In other words, when the ground voltage between the neutral line and the ground line increases to the first warning voltage value, the load voltage of the load circuit also increases to the first warning voltage value accordingly.

[0052] In the disclosed embodiment, the load voltage monitoring circuit is provided with a first alarm voltage value. The load voltage monitoring circuit collects the load voltage of the load circuit in real time, and compares the load voltage with the first alarm voltage value. When the load voltage is greater than the first alarm voltage value, it means a ground fault and there is a safety risk. At this time, if the alarm condition is met, the load voltage monitoring circuit controls the release to separate from the power line and stop the power supply of the power line.

[0053] In one embodiment, the fixed load in the load circuit is matched with an alarm indicator light to achieve release tripping and alarm at the same time.

[0054] Please refer to Figure 5 The charging cabinet abnormality processing device shown in the figure. The load circuit includes a fixed load and an alarm indicator light connected in series; the load voltage monitoring circuit is connected in parallel with the fixed load, and the load voltage monitoring circuit is used to detect the voltage of the fixed load in real time to obtain the load voltage of the load circuit; the alarm indicator light is used to perform an alarm action when the current passing through the alarm indicator light is greater than a preset current value; the alarm action includes at least one of the alarm indicator light being on and the alarm indicator light flashing.

[0055] Among them, the alarm indicator light is used in combination with a fixed load. When the grounding voltage between the neutral line and the grounding line increases, the current passing through the alarm indicator light gradually increases. When the voltage between the neutral line and the grounding line increases to a first alarm voltage value, the current passing through the alarm indicator light also reaches a preset current value. The alarm indicator light is configured to perform an alarm action when the current passing through the alarm indicator light is greater than a preset current value, that is, when the grounding voltage reaches the first alarm voltage value, the load voltage monitoring circuit controls the release to be disconnected from the power line, and the alarm indicator light starts to alarm.

[0056] Among them, the alarm action includes lighting up the alarm indicator light. Optionally, when the current passing through the alarm indicator light is greater than a preset current value, the alarm indicator light changes from an off state to a lit state. Alternatively, when the current passing through the alarm indicator light is not greater than the preset current value, when there is current passing through the alarm indicator light, the brightness of the alarm indicator light is relatively low (for example, the brightness is less than the first brightness). As the current passing through the alarm indicator light continues to increase, the brightness of the alarm indicator light increases until the current passing through the alarm indicator light is greater than the preset current value and the brightness of the alarm indicator light is greater than the first brightness, thereby providing an alarm.

[0057] In addition, the alarm action may also include flashing of the alarm indicator light. For example, when the current passing through the alarm indicator light is greater than a preset current value, it is sufficient to drive the alarm indicator light to flash at a preset frequency to realize automatic ground fault alarm. Optionally, the preset frequency is, for example, 50 Hz.

[0058] Optional, such as Figure 6 The charging cabinet abnormality processing device shown in the figure. The load circuit also includes a first diode connected between the neutral line and the alarm indicator light; the first diode is used to filter the AC power on the load circuit.

[0059] Among them, the first diode has an anti-reverse effect. The power line provides alternating current. The first diode can filter out the negative half cycle of the alternating current, so that the alarm indicator light and the load voltage monitoring circuit can work stably.

[0060] In the disclosed embodiment, grounding detection is achieved by detecting current, that is, a fixed resistor is connected in series between the neutral line and the grounding line, and the grounding fault is detected by processing the current on the fixed resistor. A load voltage monitoring circuit is added to the rear end of the fixed load. After reaching the first alarm voltage value, the release can be automatically controlled to cut off the mains power, thereby cutting off the power in time and improving the safety of the charging cabinet. In addition, an alarm indicator light is connected in series between the neutral line and the grounding line. When the grounding is poor, the alarm indicator light can automatically flash at a preset frequency to implement an alarm, alerting the user or operation and maintenance personnel that there is a fault in the charging cabinet.

[0061] As mentioned above, when the alarm condition is met, the load voltage monitoring circuit controls the release and the power line to be disconnected from each other, and the power supply of the power line is stopped.

[0062] Please refer to Figure 7 The charging cabinet abnormality processing device shown in the figure also includes a tripping drive circuit connected to the load voltage monitoring circuit and the tripper; the load voltage monitoring circuit is used to send a drive signal to the tripping drive circuit when the alarm condition is met; the tripping drive circuit is used to control the tripping of the tripper according to the drive signal, so that the tripper and the power cord are disconnected from each other.

[0063] That is, the load voltage monitoring circuit is connected to the tripping drive circuit, which is in turn connected to the tripper. The tripping drive circuit is controlled by the load voltage monitoring circuit, and when the first alarm voltage value is reached, it receives the drive signal sent by the load voltage monitoring circuit, and under the drive of the drive signal, controls the tripper to trip the power line to automatically cut off the AC power.

[0064] In the disclosed embodiment, a tripping drive circuit is provided to drive the releaser to operate, thereby reducing the complexity of the load voltage monitoring circuit. The load voltage monitoring circuit can realize the tripping of the releaser only by outputting a drive signal. The working stability of the load voltage monitoring circuit and the releaser is improved.

[0065] The working process of the main control board is described below.

[0066] In one embodiment, the main control board is specifically used to compare the ground voltage with the second alarm voltage value. If the ground voltage is greater than the second alarm voltage value, it is determined that the charging cabinet currently has a poor grounding fault; wherein the second alarm voltage value is issued by a server that is communicated with the main control board.

[0067] The main control board stores a second alarm voltage value.

[0068] Optionally, the second alarm voltage value is equal to the first alarm voltage value. Then, if the ground voltage is greater than the second alarm voltage value, it is determined that the charging cabinet currently has a poor grounding fault, and the main control board outputs an alarm prompt message and outputs an operation and maintenance prompt message. At the same time, the ground voltage is also greater than the first alarm voltage value, and the ground detection circuit controls the release to disconnect from the power cord. That is, the abnormal processing device of the charging cabinet simultaneously outputs an alarm prompt message and outputs an operation and maintenance prompt message and disconnects the charging cabinet from the mains.

[0069] Optionally, the second alarm voltage value may be lower than the first alarm voltage value, wherein when the ground voltage is higher than the first alarm voltage value, there is a risk of electric shock and the safety is poor, while when the ground voltage is higher than the second alarm voltage value and lower than the first alarm voltage value, there is a possibility of poor grounding, but the risk of electric shock is small or non-existent. Then, if the ground voltage is higher than the second alarm voltage value and lower than the first alarm voltage value, it is determined that the charging cabinet currently has a poor grounding fault, and the main control board outputs an alarm prompt message and outputs an operation and maintenance prompt message so that the operation and maintenance personnel can perform repairs in time. When the ground voltage is higher than the first alarm voltage value, the ground detection circuit controls the release to work to avoid electric shock.

[0070] In one implementation, the main control board includes an information display component, and when the main control board determines that the charging cabinet currently has a poor grounding fault, it outputs alarm prompt information and outputs operation and maintenance prompt information for relevant personnel to view. In addition, the main control board stores the preset second alarm voltage value.

[0071] In another implementation, Figure 8 The device for processing anomalies of a charging cabinet shown in the figure includes a networking module, which is connected to the main control board. The main control board is connected to a remote server through the networking module. The second alarm voltage value sent by the server to the main control board is received through the networking module and stored. In addition, each time the server determines the latest second alarm voltage value, it sends the latest second alarm voltage value to the main control board. The main control board uses the latest second alarm voltage value to overwrite the historical second alarm voltage value and stores it, ensuring the real-time nature of the second alarm voltage value, further ensuring the effectiveness and timeliness of the alarm, and ensuring user safety.

[0072] Optionally, the second alarm voltage value sent by the server to the main control board is received in real time or periodically through the networking module and stored. Optionally, the networking module can communicate with the server through a network such as 4G or 5G.

[0073] In one embodiment, the main control board is specifically used to generate operation and maintenance prompt information, and send the operation and maintenance prompt information to a server that is communicatively connected to the main control board; the operation and maintenance prompt information is used to instruct the server to generate an operation and maintenance work order based on the information of the charging cabinet included in the operation and maintenance prompt information, and issue the operation and maintenance work order to the target operation and maintenance account.

[0074] Among them, the main control board can send the operation and maintenance prompt information and / or the alarm prompt information to the networking module, and the networking module sends the operation and maintenance prompt information and / or the alarm prompt information to the server.

[0075] The server side can be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, IoT devices, portable wearable devices, and servers. IoT devices can be smart TVs, smart car devices, etc. Portable wearable devices can be smart watches, smart bracelets, etc. The server can be implemented as an independent server or a server cluster consisting of multiple servers. Alternatively, the server side can also refer to an operating application running on the above-mentioned personal computers and other devices.

[0076] After receiving the operation and maintenance prompt information, the server determines the information of the reported charging cabinet based on the analysis of the operation and maintenance prompt information. The information of the charging cabinet includes but is not limited to the location, name, operating voltage range, current working status, etc. of the charging cabinet, which is not specifically limited here.

[0077] An operation and maintenance work order is generated based on the information of the charging cabinet. The operation and maintenance work order may include part or all of the information of the charging cabinet, and can be used to instruct the operation and maintenance personnel to accurately find the charging cabinet.

[0078] The server sends the operation and maintenance work order to the target operation and maintenance account. Correspondingly, the operation and maintenance personnel can log in to the target operation and maintenance account in the operation and maintenance application to check the operation and maintenance work order, locate the charging cabinet as soon as possible, and perform maintenance and other processing in time, thereby improving the efficiency of operation and maintenance inspection and maintenance.

[0079] In one embodiment, a prompt component may be provided in the charging cabinet, such as controlling an audible and visual alarm, a screen display, an indicator light, and a voice component, etc. The main control board is specifically used to control at least one of the audible and visual alarm, the screen display, the indicator light, and the voice component to output a corresponding type of warning prompt information when it is determined that the charging cabinet currently has a poor grounding fault.

[0080] Exemplarily, the alarm prompt information includes an alarm signal. The main control board sends the alarm signal to the sound and light alarm. The sound and light alarm works under the action of the alarm signal and performs an alarm action.

[0081] The alarm prompt information includes image alarm information. The main control board sends the image alarm information to the screen display, and the screen display displays the alarm image in the image alarm information to realize the alarm.

[0082] The alarm prompt information includes an indication drive signal. The main control board sends the indication drive signal to the indicator light. The indicator light works under the drive of the indication drive signal to realize the alarm.

[0083] The alarm prompt information includes voice alarm information, and the main control board sends the voice alarm information to the voice component, and the voice component plays the voice alarm information to realize the alarm. Optionally, the voice alarm information can be sent to the main control board by the server through the networking module in real time or periodically.

[0084] It should be noted that the alarm prompt information can also be output in other ways as long as the alarm information prompt can be achieved.

[0085] In the disclosed embodiment, by outputting alarm prompt information, users are reminded to stay away from the cabinet, avoid safety risks in time, and avoid electric shock to users. It can also prompt operation and maintenance personnel located around the charging cabinet to repair the charging cabinet in time, thereby improving the effectiveness and efficiency of risk warning.

[0086] In one embodiment, Fig. 9 The device for handling abnormalities of the charging cabinet shown in the figure. The device also includes a backup power supply and an ACDC module, the ACDC module is connected between the tripper and the main control board; the ACDC module is used to convert the AC power provided by the power line through the tripper to power the main control board; the backup power supply is used to power the main control board when the tripper is tripped.

[0087] Among them, the ACDC module and the release enable the power cord to supply power to the ACDC module.

[0088] The ACDC module is composed of an AC interchangeable power supply and a DC power supply. It is a device that can convert the power supply voltage from AC to DC. It can be used in charging cabinets to make them safer, more convenient, more efficient and more economical. The ACD module mainly obtains voltage from the AC source provided by the power line, and then converts it into DC voltage by the rectifier. The output energy is higher than the input voltage, so as to achieve the purpose of outputting DC voltage and current of the circuit.

[0089] That is, in the disclosed embodiment, the ACDC module can convert the AC power of the power line, and then use the converted power to power the main control board.

[0090] Exemplarily, the ACDC module can convert the 220V AC power provided by the power line into 12V to power the main control board.

[0091] When the release is activated and the mains power is cut off, the ACDC module can no longer supply power to the charging cabinet and the main control board. At this time, the backup power supply starts to work and supplies power to the networking module and the main control board to ensure that the alarm prompt information and operation and maintenance prompt information can be continuously uploaded to the server and displayed.

[0092] Optional, such as Fig.10The charging cabinet abnormality processing device shown in the figure also includes a second diode and a third diode. The second diode is connected between the ACDC module and the main control board. The third diode is connected between the backup power supply and the main control board. When the power line is connected to the release and the power is normally supplied, the ACDC module is in place, the voltage of the ACDC module is high, and the second diode is turned on so that the ACDC module supplies power to the main control board; when the power line is disconnected from the release, the ACDC module is not in place, the voltage of the backup power supply is high, and the third diode is turned on so that the backup power supply supplies power to the main control board.

[0093] In the disclosed embodiment, after the release is actuated, the backup power supply supplies power to the networking module and the main control board, ensuring continuous reporting of operation and maintenance prompt information and ensuring the abnormal operation and maintenance efficiency of the charging cabinet.

[0094] In one embodiment, a charging cabinet is provided, the charging cabinet comprising a charging cabinet abnormality processing device as described in any of the above embodiments. For the specific definition of the charging cabinet, please refer to the definition of the charging cabinet abnormality processing device above, which will not be repeated here.

[0095] The following is an introduction to a ground fault automatic processing and alarm system for a charging cabinet provided by an embodiment of the present disclosure in conjunction with a specific application scenario. Fig.11 The system includes mains input, hot-zero switch, tripper, diode, alarm indicator, fixed load, load voltage monitoring circuit, tripping drive circuit, main control MCU (also known as main control board), networking module and backup power supply.

[0096] Mains: The power source of the electrical cabinet, which supplies power to the ACDC module and is connected to the grounding detection circuit for grounding detection. Live / neutral switching: Automatically identify the live / neutral wire, and automatically correct the live and neutral wire connections when the wiring is wrong, to ensure that the subsequent detection circuit is connected to the actual neutral wire. Diode: Anti-reverse effect, filtering out the negative half cycle of the AC power. Alarm indicator: Used in conjunction with a fixed load; when the voltage between N and PE increases, the current on the alarm indicator gradually increases. When the voltage between N and PE increases to the preset alarm, the current on the alarm indicator is sufficient to drive the indicator to flash at 50HZ, realizing automatic alarm of ground fault. Fixed load: Connected in series between N and PE, used in conjunction with the alarm indicator. When the voltage between N and PE increases to the preset alarm value, the voltage drop on the fixed load also increases to the preset alarm value accordingly. Load voltage monitoring circuit: Real-time detection of the load voltage of the fixed load, and output control signals to the trip drive circuit and the main control MCU. Trip drive circuit: controlled by the load voltage monitoring circuit, it can control the trip device to trip and automatically cut off the AC power after reaching the preset alarm value of the ground fault. Main control MCU: the main controller of the entire charging cabinet, which is also the core module of the charging cabinet. It collects the voltage information returned by the load monitoring circuit in real time and determines whether the cabinet grounding is faulty according to the preset threshold (the threshold is adjustable). Networking module: the core module of the charging cabinet operation, (1) can send the ground fault reporting threshold to the main control in real time; (2) at the same time, it can receive the ground alarm information returned by the main control and transmit the alarm information to the server through the 4G network. Backup power supply: after the trip device is activated and the AC power is cut off, the backup voltage supplies power to the networking module and the main control MCU to ensure that the ground alarm information is continuously uploaded to the server.

[0097] The entire system workflow is as follows:

[0098] 1. The AC power is connected to the power cabinet, and the hot and zero switching circuit automatically adjusts L and N to ensure that the correct L and N are connected to the subsequent detection circuit;

[0099] 2. The three wires L / N / PE are output to the subsequent detection circuit through the release;

[0100] 3. Connect a diode, an alarm indicator light and a fixed load in series between the N line and the PE line;

[0101] 4. When the voltage between N and PE rises to a predetermined value:

[0102] (1) The current on the alarm indicator reaches a predetermined value, thereby driving the alarm indicator to light up and flash at a frequency of 50 Hz, realizing automatic alarm;

[0103] (2) The voltage on the fixed load rises, and the load voltage monitoring circuit detects that the fixed load voltage reaches the preset alarm value, thereby controlling the trip drive circuit to operate, and the trip device trips to automatically cut off the power;

[0104] (3) The load voltage monitoring circuit transmits the voltage information to the main control MCU through the ADC (analog-to-digital conversion circuit). When the main control MCU detects that the voltage reaches the fault threshold, it reports it to the server through the networking module for remote alarm.

[0105] 5. After the release is activated, the backup power supply supplies power to the networking module and the main control MCU to ensure continuous fault reporting.

[0106] In the disclosed embodiment, the charging cabinet can detect the grounding effect in real time through the grounding detection circuit; when poor grounding is detected, an alarm message can be generated immediately to issue an alarm prompt, and the alarm message can be uploaded to the server and an operation and maintenance work order can be issued, which greatly improves the operation and maintenance efficiency and the charging cabinet maintenance efficiency; and it can also actively cut off the power to avoid safety risks, greatly improving the safety factor of the charging cabinet when in use.

[0107] For other specific limitations on the automatic handling and alarm system of the ground fault of the charging cabinet, please refer to the limitations on the abnormal handling device of the charging cabinet above, which will not be repeated here.

[0108] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0109] The above-described embodiments only express several implementation methods of the embodiments of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the embodiments of the present disclosure, and these all belong to the protection scope of the embodiments of the present disclosure. Therefore, the protection scope of the patent of the embodiments of the present disclosure shall be subject to the attached claims.

Claims

1. A device for handling abnormalities in a charging cabinet, characterized in that: The device comprises a main control board of the charging cabinet, a tripper and a grounding detection circuit connected between the tripper and the main control board; the tripper is connected to a power line, and the power line is used to supply power to the charging cabinet through the tripper; The grounding detection circuit is used to perform grounding detection on the charging cabinet in real time and send the grounding voltage of the charging cabinet obtained by the grounding detection to the main control board; and, when the grounding detection result meets the alarm condition, controlling the release and the power line to be disconnected from each other; The main control board is used to determine whether the charging cabinet currently has a poor grounding fault based on the grounding voltage obtained in real time, and when it is determined that the charging cabinet currently has a poor grounding fault, output alarm prompt information and output operation and maintenance prompt information.

2. The device according to claim 1, characterized in that The ground detection circuit includes a load circuit and a load voltage monitoring circuit; two ends of the load circuit are respectively connected to the neutral line and the ground line of the power line through the release; The load voltage monitoring circuit is used to detect the load voltage of the load circuit in real time, and send the load voltage as the ground voltage to the main control board; The load voltage monitoring circuit is further configured to determine that the alarm condition is satisfied when the load voltage is greater than a first alarm voltage value.

3. The device according to claim 2, characterized in that The load circuit includes a fixed load and an alarm indicator light connected in series; The load voltage monitoring circuit is connected in parallel with the fixed load and is used to detect the voltage of the fixed load in real time to obtain the load voltage of the load circuit; The warning indicator light is used to perform a warning action when the current passing through the warning indicator light is greater than a preset current value; the warning action includes at least one of lighting the warning indicator light and flashing the warning indicator light.

4. The device according to claim 3, characterized in that The load circuit also includes a first diode connected between the neutral line and the warning indicator light; The first diode is used to filter the alternating current on the load circuit.

5. The device according to claim 2, characterized in that The device also includes a trip drive circuit connected to the load voltage monitoring circuit and the trip device; The load voltage monitoring circuit is used to send a driving signal to the tripping driving circuit when the alarm condition is met; The tripping drive circuit is used to control the tripping of the tripper according to the drive signal, so that the tripper and the power line are disconnected from each other.

6. The device according to any one of claims 1 to 5, characterized in that: The main control board is specifically used to generate operation and maintenance prompt information, and send the operation and maintenance prompt information to a server connected to the main control board in communication; The operation and maintenance prompt information is used to instruct the server to generate an operation and maintenance work order according to the information of the charging cabinet included in the operation and maintenance prompt information, and send the operation and maintenance work order to the target operation and maintenance account.

7. The device according to any one of claims 1 to 5, characterized in that: The main control board is specifically used to compare the ground voltage with the second alarm voltage value, and if the ground voltage is greater than the second alarm voltage value, it is determined that the charging cabinet currently has a poor grounding fault; The second alarm voltage value is issued by a service end that is in communication with the main control board.

8. The device according to any one of claims 1 to 5, characterized in that: The device also includes a fire-zero switch connected between the power line and the trip unit; The live-to-zero switch is used to automatically identify the neutral line and the live line of the power line, and automatically correct the connection between the neutral line and the live line in case of wiring errors.

9. The device according to any one of claims 1 to 5, characterized in that: The device also includes a backup power supply and an ACDC module, wherein the ACDC module is connected between the tripper and the main control board; The ACDC module is used to convert the alternating current provided by the power line through the release to supply power to the main control board; The backup power supply is used to supply power to the main control board when the release is in tripping operation.

10. The device according to any one of claims 1 to 5, characterized in that: The main control board is specifically used to control at least one of the sound and light alarm, screen display, indicator light and voice component to output the corresponding type of alarm prompt information when it is determined that the charging cabinet currently has a poor grounding fault.

11. A charging cabinet, characterized in that: The charging cabinet includes a charging cabinet abnormality processing device as described in any one of claims 1 to 10.

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