Power supply system and method for charging pile inspection device and charging pile inspection device

Abstract

The invention discloses a power supply system and method for a charging pile inspection device and the charging pile inspection device. The system comprises an input circuit, a half-bridge driving circuit, a multi-channel isolation transformer and a multi-channel synchronous power supply, and the input circuit is connected with a charging pile and used for receiving power supply current input by the charging pile and generating system current to supply power to the half-bridge driving circuit and the multi-channel synchronous power supply; the half-bridge driving circuit is connected with the input circuit and is used for driving the multi-path isolation transformer based on the system current; the multi-path isolation transformer is connected with the half-bridge driving circuit and is used for generating output current to supply power to a detection module of the charging pile detection device; and the multi-path synchronous power supply is connected with the input circuit and is used for supplying power to an operation module of the charging pile inspection device based on the system current. The technical problem that the size of a power supply system is too large due to a conventional isolation power supply scheme in the charging pile inspection device is solved.

Description

Technical Field

[0001] The present invention relates to the field of electronic circuit technology, and in particular to a power supply system and method for a charging pile inspection device and a charging pile inspection device. Background Art

[0002] The charging pile inspection device is used to inspect the performance and safety of the charging pile. According to the inspection standards of the charging pile, it can detect the voltage, current, power, whether it is charging, whether it can be disconnected normally, and the communication function of the charging pile.

[0003] In conventional charging pile inspection devices, 220V is often used as the power supply voltage, which is a high voltage greater than 36V. Therefore, multiple isolated power supplies are required to ensure isolation between measurement, communication and main control. Conventional isolated power supply solutions have brought about a further increase in volume. For example, conventional box-type inspection devices or desktop inspection devices use conventional isolated power supply designs, resulting in excessive volume; for another example, multiple DC isolated power supply modules can be used to meet the needs of multiple isolated power supply outputs, but the isolation modules that meet the 3KV AC withstand voltage are large in size and high in cost. In order to meet the design of portable charging pile inspection devices, the internal power supply system needs to be optimized.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] Embodiments of the present invention provide a power supply system, method and charging pile inspection device for a charging pile inspection device, so as to at least solve the technical problem of excessively large power supply system volume caused by a conventional isolated power supply solution in the charging pile inspection device.

[0006] According to one aspect of an embodiment of the present invention, there is provided a power supply system for a charging pile inspection device, comprising: an input circuit, a half-bridge drive circuit, a multi-channel isolation transformer and a multi-channel synchronous power supply, wherein the input circuit is connected to the charging pile, for receiving the power supply current input by the charging pile and generating a system current to power the half-bridge drive circuit and the multi-channel synchronous power supply; the half-bridge drive circuit is connected to the input circuit, for driving the multi-channel isolation transformer based on the system current; the multi-channel isolation transformer is connected to the half-bridge drive circuit, for generating an output current to power a detection module of the charging pile detection device; the multi-channel synchronous power supply is connected to the input circuit, for powering an operation module of the charging pile inspection device based on the system current.

[0007] Optionally, the input circuit includes a protection circuit, wherein the protection circuit is used to control the transmission of the power supply current under abnormal circumstances, the abnormal circumstances including the reverse connection of the voltage at the charging pile input, the current at the charging pile input exceeding a current threshold, and the voltage at the charging pile input exceeding a voltage threshold.

[0008] Optionally, the input circuit further includes a step-down module, wherein the step-down module is used to generate a system current based on the power supply current, and a voltage corresponding to the system current is smaller than a voltage corresponding to the power supply current.

[0009] Optionally, the power supply system also includes a lithium battery power supply circuit, wherein the lithium battery power supply circuit is connected to the input circuit and is used to power the half-bridge drive circuit and the multi-channel synchronous power supply when the charging pile does not input power supply current.

[0010] Optionally, the lithium battery power supply circuit includes a lithium battery, a switch circuit and a charging circuit, wherein the lithium battery is used to power the half-bridge drive circuit and a multi-channel synchronous power supply; the switch circuit is located between the lithium battery and the input circuit, and is used to control whether the lithium battery is supplying power; the charging circuit is connected to the input circuit and the lithium battery, and is used to charge the lithium battery based on the system current when the charging pile inputs the power supply current.

[0011] Optionally, the charging circuit is also used to charge the lithium battery based on an external charger when the charging pile does not input a power supply current.

[0012] Optionally, the power supply system further includes an MCU microcontroller, wherein the MCU microcontroller is used to control the lithium battery power supply circuit and the multi-channel synchronous power supply.

[0013] According to another aspect of an embodiment of the present invention, a charging pile inspection device is also provided, including: a power supply system, a detection module, an operation module and a display module for the charging pile inspection device, wherein the power supply system is used to power the detection module and the operation module; the detection module is used to obtain detection data of the charging pile; the operation module includes a communication module and a sensor module, the communication module is used to upload the detection data to a server, and the sensor module is used to collect the temperature and humidity of the charging pile inspection device; the display module is used to display the detection result of the charging pile.

[0014] According to another aspect of an embodiment of the present invention, a power supply method for a charging pile inspection device is also provided, including: receiving a power supply current input by a charging pile; based on the power supply current, powering a half-bridge drive circuit and a multi-channel synchronous power supply, wherein the half-bridge drive circuit and the multi-channel synchronous power supply are located in a power supply system; based on the multi-channel synchronous power supply, powering an operation module of the charging pile detection device; based on the half-bridge drive circuit, driving a multi-channel isolation transformer to generate multiple isolation voltages, wherein the multi-channel isolation transformer is connected to the half-bridge drive circuit; based on the multiple isolation voltages, powering a detection module of the charging pile detection device.

[0015] According to another aspect of an embodiment of the present invention, a power supply device for a charging pile inspection device is also provided, including: a receiving module for receiving a power supply current input by the charging pile; a first power supply module for supplying power to a half-bridge drive circuit and a multi-channel synchronous power supply based on the power supply current, wherein the half-bridge drive circuit and the multi-channel synchronous power supply are located in a power supply system; a second power supply module for supplying power to an operation module of the charging pile detection device based on the multi-channel synchronous power supply; a driving module for driving a multi-channel isolation transformer to generate multiple isolation voltages based on the half-bridge drive circuit, wherein the multi-channel isolation transformer is connected to the half-bridge drive circuit; and a third power supply module for supplying power to a detection module of the charging pile detection device based on multiple isolation voltages.

[0016] According to another aspect of an embodiment of the present invention, a non-volatile storage medium is further provided, the non-volatile storage medium including a stored program, wherein when the program is running, the device where the non-volatile storage medium is located is controlled to execute the above-mentioned power supply method for the charging pile inspection device.

[0017] According to yet another aspect of an embodiment of the present invention, a computer device is provided. The computer device includes a processor, and the processor is used to run a program. When the program is run, the power supply method for the charging pile inspection device is executed.

[0018] According to yet another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the power supply method for the charging pile inspection device is implemented.

[0019] In an embodiment of the present invention, a power supply system for a charging pile inspection device is adopted, through an input circuit, a half-bridge drive circuit, a multi-channel isolation transformer and a multi-channel synchronous power supply, wherein the input circuit is connected to the charging pile, and is used to receive the power supply current input by the charging pile and generate a system current to power the half-bridge drive circuit and the multi-channel synchronous power supply; the half-bridge drive circuit is connected to the input circuit, and is used to drive the multi-channel isolation transformer based on the system current; the multi-channel isolation transformer is connected to the half-bridge drive circuit, and is used to generate an output current to power the detection module of the charging pile detection device; the multi-channel synchronous power supply is connected to the input circuit, and is used to power the operation module of the charging pile inspection device based on the system current, thereby achieving the purpose of reducing the internal power supply volume of the charging pile inspection device, thereby realizing the technical effect of completing the multi-channel power supply and isolation power supply functions within the volume of a handheld device, and further solving the technical problem of the excessive volume of the power supply system caused by the conventional isolation power supply scheme in the charging pile inspection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 A hardware structure block diagram of a computer terminal for implementing a power supply method for a charging pile inspection device is shown;

[0022] Figure 2 is a structural block diagram of a power supply system for a charging pile inspection device provided according to an embodiment of the present invention;

[0023] Figure 3 is an internal circuit structure diagram of a voltage measurement module provided according to an optional embodiment of the present invention;

[0024] Figure 4 is an internal circuit structure diagram of a half-bridge driving circuit connected to a multi-channel isolation transformer according to an optional embodiment of the present invention;

[0025] Figure 5 is a structural block diagram of a power supply system for a charging pile inspection device provided according to an optional embodiment of the present invention;

[0026] Figure 6 is an internal circuit structure diagram of a protection circuit provided according to an optional embodiment of the present invention;

[0027] Figure 7 is an internal circuit structure diagram of a step-down module provided according to an optional embodiment of the present invention;

[0028] Figure 8 is an internal circuit structure diagram of a boost module provided according to an optional embodiment of the present invention;

[0029] Fig. 9 is an internal circuit structure diagram of a lithium battery voltage measurement module provided according to an optional embodiment of the present invention;

[0030] Fig.10 is an internal circuit structure diagram of a charging circuit provided according to an optional embodiment of the present invention;

[0031] Fig.11 is an internal circuit structure diagram of a switch circuit provided according to an optional embodiment of the present invention;

[0032] Fig.12 is a diagram of an internal circuit structure at a TYPE-C interface provided according to an optional embodiment of the present invention;

[0033] Fig.13 is an internal circuit structure diagram of the connection between the LDO and the MCU provided in an optional embodiment of the present invention;

[0034] Fig.14 It is a structural diagram of an internal circuit of an MCU controlling multiple synchronous power supplies according to an optional embodiment of the present invention;

[0035] Fig.15 is a structural block diagram of a charging inspection device provided according to an embodiment of the present invention;

[0036] Fig.16 is a schematic flow chart of a power supply method for a charging pile inspection device provided according to an embodiment of the present invention;

[0037] Fig.17 It is a structural block diagram of a power supply device for a charging pile inspection device provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] According to an embodiment of the present invention, an embodiment of a power supply method for a charging pile inspection device is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0041] The method embodiment provided in Embodiment 3 of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Figure 1The hardware structure block diagram of a computer terminal for implementing a power supply method for a charging pile inspection device is shown. Figure 1 As shown, the computer terminal 10 may include one or more (102a, 102b, ..., 102n are used to illustrate) processors (the processor may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 104 for storing data. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the BUS bus), a network interface, a power supply and / or a camera. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown.

[0042] It should be noted that the one or more processors and / or other data processing circuits described above may generally be referred to herein as "data processing circuits". The data processing circuits may be embodied in whole or in part as software, hardware, firmware, or any other combination thereof. In addition, the data processing circuit may be a single independent processing module, or may be incorporated in whole or in part into any of the other components in the computer terminal 10. As described in the embodiments of the present application, the data processing circuit acts as a processor control (e.g., selection of a variable resistor terminal path connected to an interface).

[0043] The memory 104 can be used to store software programs and modules of application software, such as the program instructions / data storage device corresponding to the power supply method for the charging pile inspection device in the embodiment of the present invention. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory 104, that is, the power supply method for the charging pile inspection device of the above-mentioned application program is realized. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor, and these remote memories can be connected to the computer terminal 10 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0044] The display may be, for example, a touch screen liquid crystal display (LCD) that enables a user to interact with a user interface of the computer terminal 10 .

[0045] Figure 2is a structural block diagram of a power supply system for a charging pile inspection device provided according to an embodiment of the present invention, such as Figure 2 As shown, the system includes: an input circuit 21, a half-bridge driving circuit 22, a multi-channel isolation transformer 23 and a multi-channel synchronous power supply 24.

[0046] The input circuit 21 is connected to the charging pile, and is used to receive the power supply current input by the charging pile and generate a system current to power the half-bridge drive circuit 22 and the multi-channel synchronous power supply 24 .

[0047] In this structure, the input circuit 21 may include a protection circuit, a voltage measurement module and a voltage reduction module. The protection circuit can provide protection for the back-end power supply system in the case of reverse voltage, excessive current or excessive voltage, to prevent damage to the back-end power supply system due to connection errors or charging pile failures; the voltage measurement module is used to detect the input DC voltage and provide an early warning in the case of abnormal voltage. Figure 3 is an internal circuit structure diagram of a voltage measurement module provided according to an optional embodiment of the present invention, such as Figure 3 As shown, through the voltage division by resistors R41 and R42, C73 can detect the 12V voltage after filtering, and prompt the voltage abnormality when the input A+ and A- voltages are abnormal; the step-down module is used to reduce the input DC 12V voltage to a low voltage that can be used for the back-end power supply system.

[0048] The half-bridge driving circuit 22 is connected to the input circuit 21 and is used to drive the multi-channel isolation transformer 23 based on the system current.

[0049] In this structure, the half-bridge drive circuit 22 is usually composed of two power semiconductor switches, respectively referred to as the upper bridge arm and the lower bridge arm. The two switches control the flow of current through control signals to achieve control of the load. In addition, the half-bridge driver may also include an inductor, a load, and necessary control circuits and protection circuits. The working principle of the half-bridge drive circuit 22 is based on the alternating conduction and cutoff of the power semiconductor switches, and their interaction with components such as the inductor and the load. Specifically, through appropriate control signals, the upper bridge arm and the lower bridge arm are alternately turned on and off, thereby forming a controllable circuit structure, and this alternating conduction and cutoff process achieves control of the load current. Figure 4 FIG. 1 is an internal circuit structure diagram of a half-bridge driving circuit connected to a multi-channel isolation transformer according to an optional embodiment of the present invention. Figure 4 As shown, the half-bridge driving circuit 22 drives the multi-channel isolation transformer 23, and the primary windings of multiple transformers can be connected in parallel and driven by the half-bridge driving circuit 22. The multiple secondary windings of the transformer can output multiple isolation voltages of ISO±12V, ISO+5V, ISO+6V through combination, and meet the 3KV AC withstand voltage requirement between strong current and weak current required by the standard, and the isolation withstand voltage can even reach 4KV AC level.

[0050] The multi-channel isolation transformer 23 is connected to the half-bridge driving circuit 22 and is used to generate an output current to power the detection module of the charging pile detection device.

[0051] In this structure, the multi-channel isolation transformer 23 refers to a transformer with multiple output windings, which are electrically isolated from each other, thereby realizing electrical isolation of multiple circuits. Its working principle is similar to that of an ordinary transformer, both of which are based on the principle of electromagnetic induction, and realize the conversion of voltage and current through the mutual inductance between the windings. Driven by the half-bridge drive circuit 22, the multi-channel isolation transformer 23 can simultaneously output multiple isolation voltages of different sizes to power different functions of the inspection module. For example, the isolation voltage of ISO±12V is used for DC CT (DC current transformer) to measure charging current; the isolation voltage of ISO+5V is used for CAN (Controller Area Network) circuit, which is responsible for the communication between the charging pile and the load; the isolation voltage of ISO+6V is used to detect the CC2 pin voltage to identify whether the charging gun is plugged in.

[0052] The multi-channel synchronous power supply 24 is connected to the input circuit 21 and is used to supply power to the operation module of the charging pile inspection device based on the system current.

[0053] In this structure, the multi-channel synchronous power supply 24 refers to multiple independent power supply units, and these power supply units can achieve synchronous output. It usually has multiple output channels, and each channel can adjust the output voltage and current separately to meet the needs of different devices. The operation module of the charging pile inspection device may include a communication module and a sensor module, wherein the communication module may include a 4G / 5G module, a WIFI module, a LoRa module and a Beidou module for communicating and transmitting data with a remote server, and the sensor module may be a multi-channel split wireless temperature sensor for detecting the temperature and humidity of the inspection device.

[0054] Through the above system, the purpose of reducing the internal power supply volume of the charging pile inspection device is achieved, thereby realizing the technical effect of completing the multi-channel power supply and isolated power supply functions within the volume of a handheld device, and further solving the technical problem of the excessive size of the power supply system caused by the conventional isolated power supply solution in the charging pile inspection device.

[0055] As an optional embodiment, Figure 5 is a structural block diagram of a power supply system for a charging pile inspection device provided according to an optional embodiment of the present invention, such as Figure 5 As shown, the power supply system for the charging pile inspection device may also include a protection circuit, a step-down module, a lithium battery, a power on / off circuit, a charging circuit, and an MCU microcontroller.

[0056] As an optional embodiment, the input circuit includes a protection circuit, wherein the protection circuit is used to control the transmission of the power supply current under abnormal circumstances, the abnormal circumstances including the voltage of the charging pile input being reversed, the current of the charging pile input exceeding a current threshold, and the voltage of the charging pile input exceeding a voltage threshold.

[0057] Optionally, the protection circuit is connected to the output end of the DC charging pile, and a +12V power supply is provided through the A+ and A- terminals of the DC charging pile, and damage to the back-end power supply system is prevented by adding reverse connection, overcurrent and overvoltage protection circuits. Figure 6 1 is a diagram showing the internal circuit structure of a protection circuit provided according to an optional embodiment of the present invention. Figure 6 As shown in the figure, when the input voltage is reversed, D1 is turned off; when the input voltage is normal, D1 is turned on. When the current is too large, the resettable fuse R3 acts to limit the current. When the input voltage is too high, the TVS diode D12 clamps the current and the resettable fuse R3 acts to protect it.

[0058] As an optional embodiment, the input circuit further includes a step-down module, wherein the step-down module is used to generate a system current based on the power supply current, and a voltage corresponding to the system current is smaller than a voltage corresponding to the power supply current.

[0059] Optionally, the buck module includes a high-current BUCK buck chip, wherein the BUCK buck chip adopts advanced switching power supply technology to convert the input high voltage into a stable low voltage output by controlling the on and off of a switching element (such as MOSFET). Figure 7 is an internal circuit structure diagram of a step-down module according to an optional embodiment of the present invention, such as Figure 7 As shown, the +12V power supply generates a 5.4V power supply through a large current BUCK step-down chip U7 to power the back-end circuit, and generates a 5V voltage through a large current Schottky diode to power the charging circuit, LDO circuit, half-bridge drive circuit and multi-channel synchronous BUCK power supply.

[0060] As an optional embodiment, the power supply system also includes a lithium battery power supply circuit, wherein the lithium battery power supply circuit is connected to the input circuit and is used to power the half-bridge drive circuit and the multi-channel synchronous power supply when the charging pile does not input the power supply current.

[0061] Optionally, when the charging pile does not input power supply current, that is, when the charging gun is unplugged, a lithium battery power supply circuit can be added to power the inside of the inspection device using the lithium battery when there is no DC voltage input, thereby ensuring the normal operation of the inspection device under special circumstances. Figure 8 is an internal circuit structure diagram of a boost module according to an optional embodiment of the present invention, such as Figure 8As shown in the figure, when the charging gun is unplugged or the DC charging pile stops outputting +12V power, the lithium battery immediately supplies power to the back-end system through the BOOST boost circuit U8. In addition, in order to detect the status of the lithium battery, a lithium battery voltage measurement module can also be added. Fig. 9 is an internal circuit structure diagram of a lithium battery voltage measurement module provided according to an optional embodiment of the present invention, such as Fig. 9 As shown, the lithium battery voltage after power-on is measured through the voltage-dividing resistors R99 and R100, and the MCU microcontroller converts the voltage into the lithium battery capacity and displays it on the screen.

[0062] As an optional embodiment, the lithium battery power supply circuit includes a lithium battery, a switch circuit and a charging circuit, wherein the lithium battery is used to power the half-bridge drive circuit and a multi-channel synchronous power supply; the switch circuit is located between the lithium battery and the input circuit, and is used to control whether the lithium battery is supplying power; the charging circuit is connected to the input circuit and the lithium battery, and is used to charge the lithium battery based on the system current when the charging pile inputs the power supply current.

[0063] Optionally, the charging circuit can be divided into a conventional charging circuit and a fast charging circuit. Fig.10 is an internal circuit structure diagram of a charging circuit provided according to an optional embodiment of the present invention, such as Fig.10 As shown, the charging circuit charges the large-capacitance lithium battery through the F_+12V voltage provided by A+ and A- or the C_VBUS voltage provided by the TYPE-C interface, and provides the lithium battery charging current through the fast charging chip U1. U1 confirms whether the fast charging mode can be started when the TYPE-C is powered by the CC1, CC2, DM and DP interfaces connected to the TYPE-C port.

[0064] The power on / off circuit can control whether to connect to the lithium battery for power supply through a button. Fig.11 1 is a diagram showing the internal circuit structure of a power on / off circuit according to an optional embodiment of the present invention. Fig.11 As shown, the functions of power on / off and regular key input can be realized through one button. When shutting down, when the button K1 is pressed, KEY_A is low level, and the 1st pin of D15 is also pulled low. The G pole of PMOS is pulled low, and the two back-to-back PMOS tubes Q3 and Q5 are turned on, and the lithium battery starts to power the system. MCU outputs PWR_ON at a high level, and the D pole of NMOS tube Q4 maintains the G pole of the two back-to-back PMOS at a low level, keeping it in the on state. When K1 is released, the system still maintains the power-on state. When K1 is pressed again in the power-on state, the 2nd pin of D15 is pulled low, and HC_KEY_A is connected to the MCU to inform the button press signal. When long pressing to shut down, PWR_ON outputs a low level, and the MCU prompts the user that it is shutting down. When the button is released, Q3 and Q5 are turned off, and the lithium battery stops supplying power to the back-end system.

[0065] As an optional embodiment, the charging circuit is also used to charge the lithium battery based on an external charger when the charging pile does not input a power supply current.

[0066] Optionally, you can also charge the lithium battery by connecting an external charger via the TYPE-C interface. Fig.12 1 is a diagram showing the internal circuit structure of a TYPE-C interface according to an optional embodiment of the present invention. Fig.12 As shown in the figure, in addition to providing communication functions, the TYPE-C port on the inspection device can also start the fast charging protocol through DP control. For USB chargers that do not support the PD protocol, the conventional 5V / 2A power supply capacity is used for charging. When a charger that supports the PD protocol is connected, the PD controller controls the charger to output 12V voltage, and the fast charging chip provides high current charging to the large-capacity lithium battery, shortening the entire charging process to less than 1 hour.

[0067] As an optional embodiment, the power supply system further includes an MCU microcontroller, wherein the MCU microcontroller is used to control the lithium battery power supply circuit and the multi-channel synchronous power supply.

[0068] Optionally, MCU (Micro Controller Unit) microcontroller is also often called a single-chip microcomputer, which is a single-chip microcomputer that integrates a processor (CPU), memory (including RAM and ROM), various input and output interfaces (I / O), timer / counter, interrupt system, and key functions such as ADC (analog-to-digital converter) and DAC (digital-to-analog converter). In an optional embodiment of the present invention, the MCU microcontroller is connected to a lithium battery power supply circuit and a multi-channel synchronous power supply. The system power supply supplies power to the MCU through an LDO circuit, Fig.13 is an internal circuit structure diagram of the connection between the LDO and the MCU provided in an optional embodiment of the present invention, such as Fig.13 As shown, the LDO circuit supplies M+3.3V for the MCU to operate. The MCU is responsible for the metering, control, display, communication, etc. of the entire charging pile inspection device. When using A+, A- or TYPE-C power supply, there is sufficient power, so the power supply of all modules or part of the power supply can be turned on. By controlling the enable or switch MOS tube of the multiple power supplies below, when using battery power supply, some unnecessary modules (such as metering modules) can be turned off or intermittent power supply can be used to reduce the overall power consumption, so that the working time using lithium batteries can reach more than 100 hours.

[0069] In addition, the EN enable terminals of the multi-channel synchronous BUCK power supplies are controlled by the MCU, thus eliminating the need for a switch MOS tube. Fig.14 is a diagram showing an internal circuit structure of an MCU controlling multiple synchronous power supplies according to an optional embodiment of the present invention. Fig.14 As shown in the figure, when the MCU outputs a high level, the synchronous BUCK chip outputs the Nn+3.3V voltage required by the back-end module. In this way, the MCU can determine the power supply of the 4G / 5G module, WIFI module, LoRa module, Beidou module and multi-channel split wireless temperature sensors by controlling the EN pins of multiple synchronous BUCKs.

[0070] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described order of actions, because according to the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0071] According to an embodiment of the present invention, a charging pile inspection device is also provided. Fig.15 is a structural block diagram of a charging pile inspection device provided according to an embodiment of the present invention. Fig.15 As shown, the charging pile inspection device includes: a power supply system 151 for the charging pile inspection device, a detection module 152, an operation module 153 and a display module 154. The charging pile inspection device is described below.

[0072] The power supply system 151 is used to supply power to the detection module and the operation module.

[0073] The detection module 152 is connected to the power supply system 151 and is used to obtain detection data of the charging pile.

[0074] The operation module 153 is connected to the power supply system 151 and includes a communication module and a sensor module. The communication module is used to upload the detection data to the server, and the sensor module is used to collect the temperature and humidity of the charging pile inspection device.

[0075] The display module 154 is connected to the detection module 152 and is used to display the detection result of the charging pile.

[0076] According to an embodiment of the present invention, a power supply method for a charging pile inspection device is also provided. Fig.16 1 is a flow chart of a power supply method for a charging pile inspection device according to an embodiment of the present invention. As shown in the figure, the method includes the following steps:

[0077] Step S161, receiving the power supply current input by the charging pile.

[0078] In this step, the +12V power supply is provided through the A+ and A- terminals of the DC charging pile, and the various circuits and modules in the power supply system are powered based on the input power supply current. When the DC charging pile is not powered, a lithium battery power supply system can also be added, and the power supply system is powered by a lithium battery, ensuring that the normal operation of the charging pile inspection device can be maintained under abnormal or special circumstances.

[0079] Step S162: supplying power to the half-bridge driving circuit and the multi-channel synchronous power supply based on the power supply current, wherein the half-bridge driving circuit and the multi-channel synchronous power supply are located in the power supply system.

[0080] In this step, the power supply system supplies power to the inspection device, including supplying power to the detection module and the operation module of the inspection device, wherein the half-bridge drive circuit is used to supply power to multiple detection modules, and the multi-channel synchronous power supply is used to supply power to multiple operation modules.

[0081] Step S163, supplying power to the operating module of the charging pile detection device based on the multi-channel synchronous power supply.

[0082] In this step, the operation module of the charging pile detection device is powered by a multi-channel synchronous power supply, which can ensure that the charging pile detection device obtains a stable and reliable power supply during the test. The multi-channel synchronous power supply has multiple output channels, and each channel can independently output stable voltage and current. These channels can be synchronously controlled, that is, start, stop or adjust output parameters at the same time, thereby meeting the charging pile detection device's demand for simultaneous power supply to multiple operation modules.

[0083] Step S164: Based on the half-bridge driving circuit, drive the multi-channel isolation transformer to generate multiple isolation voltages, wherein the multi-channel isolation transformer is connected to the half-bridge driving circuit.

[0084] In this step, multiple isolation transformers can be connected to the output end of the half-bridge drive circuit, and each transformer corresponds to an independent output voltage. The half-bridge drive circuit consists of two power semiconductor switches (such as MOSFET or IGBT), which are called the upper bridge arm and the lower bridge arm respectively. The two switches operate in a mutually exclusive manner, that is, when one switch is turned on, the other switch must be turned off to avoid generating a through current. By adjusting the on and off time of the two switches, the size and waveform of the output voltage can be controlled. Multi-channel isolation transformers can achieve electrical isolation and protect the control circuit from high voltage or high current. At the same time, they can also provide multiple independent output voltages to meet the power supply requirements of complex systems. In the solution based on the half-bridge drive circuit, the isolation transformer converts the half-bridge output into multiple isolated and stable output voltages.

[0085] Step S165: powering the detection module of the charging pile detection device based on multiple isolation voltages.

[0086] In this step, the detection module of the charging pile detection device is its core component, which is mainly responsible for real-time monitoring and analysis of the electrical parameters of the charging pile to ensure the normal operation and safe use of the charging pile. Different functions in the detection module of the charging pile detection device require different power supply voltages. For example, the DC CT requires ISO±12V voltage for measuring the charging current; the CAN circuit requires ISO+5V voltage for communication between the charging pile and the load; CC2 requires ISO+6V voltage for identifying whether the charging gun is plugged in.

[0087] Through the description of the above implementation methods, those skilled in the art can clearly understand that the power supply method for the charging pile inspection device according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a storage medium (such as ROM / RAM, disk, CD), and includes a number of instructions for a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0088] According to an embodiment of the present invention, there is also provided a power supply device for a charging pile inspection device for implementing the power supply method for the charging pile inspection device. Fig.17 It is a structural block diagram of a power supply device for a charging pile inspection device provided according to an embodiment of the present invention. As shown in the figure, the power supply device for the charging pile inspection device includes: a receiving module 171, a first power supply module 172, a second power supply module 173, a driving module 174 and a third power supply module 175. The power supply device for the charging pile inspection device is described below.

[0089] The receiving module 171 is used to receive the power supply current input by the charging pile.

[0090] The first power supply module 172 is connected to the receiving module 171, and is used to supply power to the half-bridge driving circuit and the multi-channel synchronous power supply based on the power supply current, wherein the half-bridge driving circuit and the multi-channel synchronous power supply are located in the power supply system.

[0091] The second power supply module 173 is connected to the first power supply module 172 and is used to supply power to the operation module of the charging pile detection device based on a multi-channel synchronous power supply.

[0092] The driving module 174 is connected to the second power supply module 173 and is used to drive a multi-channel isolation transformer to generate multiple isolation voltages based on a half-bridge driving circuit, wherein the multi-channel isolation transformer is connected to the half-bridge driving circuit.

[0093] The third power supply module 175 is connected to the driving module 174 and is used to supply power to the detection module of the charging pile detection device based on multiple isolation voltages.

[0094] It should be noted that the receiving module 171, the first power supply module 172, the second power supply module 173, the driving module 174 and the third power supply module 175 correspond to steps S161 to S165 in the embodiment, and the examples and application scenarios implemented by the multiple modules and the corresponding steps are the same, but are not limited to the contents disclosed in the above embodiment. It should be noted that the above modules as part of the device can be run in the computer terminal 10 provided in the embodiment.

[0095] An embodiment of the present invention may provide a computer device. Optionally, in this embodiment, the computer device may be located in at least one network device among multiple network devices of a computer network. The computer device includes a memory and a processor.

[0096] Among them, the memory can be used to store software programs and modules, such as the power supply method for the charging pile inspection device in the embodiment of the present invention and the program instructions / modules corresponding to the device. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory, that is, realizing the above-mentioned power supply method for the charging pile inspection device. The memory may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory may further include a memory remotely arranged relative to the processor, and these remote memories can be connected to the computer terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0097] The processor can call the information and application stored in the memory through the transmission device to perform the following steps: receive the power supply current input by the charging pile; based on the power supply current, power the half-bridge drive circuit and the multi-channel synchronous power supply, wherein the half-bridge drive circuit and the multi-channel synchronous power supply are located in the power supply system; based on the multi-channel synchronous power supply, power the operation module of the charging pile detection device; based on the half-bridge drive circuit, drive the multi-channel isolation transformer to generate multiple isolation voltages, wherein the multi-channel isolation transformer is connected to the half-bridge drive circuit; based on the multiple isolation voltages, power the detection module of the charging pile detection device.

[0098] By adopting the embodiment of the present invention, a power supply system for a charging pile inspection device is provided, which includes an input circuit, a half-bridge drive circuit, a multi-channel isolation transformer and a multi-channel synchronous power supply, wherein the input circuit is connected to the charging pile, and is used to receive the power supply current input by the charging pile and generate a system current to power the half-bridge drive circuit and the multi-channel synchronous power supply; the half-bridge drive circuit is connected to the input circuit, and is used to drive the multi-channel isolation transformer based on the system current; the multi-channel isolation transformer is connected to the half-bridge drive circuit, and is used to generate an output current to power a detection module of a charging pile detection device; the multi-channel synchronous power supply is connected to the input circuit, and is used to power an operation module of the charging pile inspection device based on the system current, thereby achieving the purpose of reducing the volume of the internal power supply of the charging pile inspection device, thereby realizing the technical effect of completing the multi-channel power supply and isolation power supply functions within the volume of a handheld device, and further solving the technical problem of the excessive volume of the power supply system caused by the conventional isolation power supply scheme in the charging pile inspection device.

[0099] A person of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing the hardware related to the terminal device through a program, and the program can be stored in a non-volatile storage medium, and the storage medium may include: a flash drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0100] The embodiment of the present invention further provides a non-volatile storage medium. Optionally, in this embodiment, the non-volatile storage medium can be used to store the program code executed by the power supply method for the charging pile inspection device provided in the above embodiment.

[0101] Optionally, in this embodiment, the non-volatile storage medium may be located in any computer terminal in a computer terminal group in a computer network, or in any mobile terminal in a mobile terminal group.

[0102] Optionally, in this embodiment, the non-volatile storage medium is configured to store program codes for executing the following steps: receiving a power supply current input by a charging pile; based on the power supply current, powering a half-bridge drive circuit and a multi-channel synchronous power supply, wherein the half-bridge drive circuit and the multi-channel synchronous power supply are located in a power supply system; based on the multi-channel synchronous power supply, powering an operation module of a charging pile detection device; based on the half-bridge drive circuit, driving a multi-channel isolation transformer to generate multiple isolation voltages, wherein the multi-channel isolation transformer is connected to the half-bridge drive circuit; based on multiple isolation voltages, powering a detection module of the charging pile detection device.

[0103] An embodiment of the present invention also provides a computer program product, including a computer program. Optionally, in this embodiment, when the computer program is executed by a processor, it can achieve: receiving a power supply current input by a charging pile; based on the power supply current, powering a half-bridge drive circuit and a multi-channel synchronous power supply, wherein the half-bridge drive circuit and the multi-channel synchronous power supply are located in a power supply system; based on the multi-channel synchronous power supply, powering an operation module of a charging pile detection device; based on the half-bridge drive circuit, driving a multi-channel isolation transformer to generate multiple isolation voltages, wherein the multi-channel isolation transformer is connected to the half-bridge drive circuit; based on multiple isolation voltages, powering a detection module of the charging pile detection device.

[0104] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0105] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0106] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0107] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0108] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0109] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a non-volatile storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0110] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A power supply system for a charging pile inspection device, characterized in that: It includes input circuit, half-bridge drive circuit, multi-channel isolation transformer and multi-channel synchronous power supply, among which: The input circuit is connected to the charging pile, and is used to receive the power supply current input by the charging pile and generate a system current to power the half-bridge drive circuit and the multi-channel synchronous power supply; The half-bridge driving circuit is connected to the input circuit and is used to drive the multi-channel isolation transformer based on the system current; The multi-channel isolation transformer is connected to the half-bridge drive circuit and is used to generate an output current to power the detection module of the charging pile detection device; The multi-channel synchronous power supply is connected to the input circuit and is used to power the operation module of the charging pile inspection device based on the system current.

2. The power supply system according to claim 1, characterized in that: include: The input circuit includes a protection circuit, wherein the protection circuit is used to control the transmission of the power supply current under abnormal circumstances, and the abnormal circumstances include the voltage of the charging pile input being reversed, the current of the charging pile input exceeding a current threshold, and the voltage of the charging pile input exceeding a voltage threshold.

3. The power supply system according to claim 1, characterized in that: include: The input circuit further includes a step-down module, wherein the step-down module is used to generate the system current based on the power supply current, and a voltage corresponding to the system current is smaller than a voltage corresponding to the power supply current.

4. The power supply system according to claim 1, characterized in that: It also includes a lithium battery power supply circuit, wherein the lithium battery power supply circuit is connected to the input circuit and is used to power the half-bridge drive circuit and the multi-channel synchronous power supply when the charging pile does not input the power supply current.

5. The power supply system according to claim 4, characterized in that: The lithium battery power supply circuit includes a lithium battery, a power on / off circuit and a charging circuit, wherein: The lithium battery is used to supply power to the half-bridge drive circuit and the multi-channel synchronous power supply; The switch circuit is located between the lithium battery and the input circuit, and is used to control whether the lithium battery supplies power; The charging circuit is connected to the input circuit and the lithium battery, and is used to charge the lithium battery based on the system current when the charging pile inputs the power supply current.

6. The power supply system according to claim 5, characterized in that: include: The charging circuit is also used to charge the lithium battery based on an external charger when the charging pile does not input the power supply current.

7. The power supply system according to claim 4, characterized in that: It also includes an MCU microcontroller, wherein the MCU microcontroller is used to control the lithium battery power supply circuit and the multi-channel synchronous power supply.

8. A charging pile inspection device, characterized in that: The method comprises the power supply system, the detection module, the operation module and the display module according to any one of claims 1 to 7, wherein: The power supply system is used to supply power to the detection module and the operation module; The detection module is used to obtain detection data of the charging pile; The operation module includes a communication module and a sensor module, wherein the communication module is used to upload the detection data to a server, and the sensor module is used to collect the temperature and humidity of the charging pile inspection device; The display module is used to display the detection result of the charging pile.

9. A power supply method for a charging pile inspection device, characterized in that: Used in a power supply system according to any one of claims 1 to 7, comprising: Receive the power supply current input by the charging pile; Based on the power supply current, supply power to a half-bridge driving circuit and a multi-channel synchronous power supply, wherein the half-bridge driving circuit and the multi-channel synchronous power supply are located in the power supply system; Based on the multi-channel synchronous power supply, power is supplied to the operation module of the charging pile detection device; Based on the half-bridge driving circuit, driving a multi-channel isolation transformer to generate multiple isolation voltages, wherein the multi-channel isolation transformer is connected to the half-bridge driving circuit; Based on the multiple isolation voltages, power is supplied to the detection module of the charging pile detection device.

10. A power supply device for a charging pile inspection device, characterized in that: include: A receiving module, used for receiving the power supply current input by the charging pile; A first power supply module, configured to supply power to a half-bridge drive circuit and a multi-channel synchronous power supply based on the power supply current, wherein the half-bridge drive circuit and the multi-channel synchronous power supply are located in a power supply system; A second power supply module, used to supply power to the operation module of the charging pile detection device based on the multi-channel synchronous power supply; A driving module, configured to drive a multi-channel isolation transformer to generate a plurality of isolation voltages based on the half-bridge driving circuit, wherein the multi-channel isolation transformer is connected to the half-bridge driving circuit; The third power supply module is used to power the detection module of the charging pile detection device based on the multiple isolation voltages.

11. A non-volatile storage medium, characterized in that: The non-volatile storage medium includes a stored program, wherein when the program is running, the device where the non-volatile storage medium is located is controlled to execute the power supply method for the charging pile inspection device according to claim 9.

12. A computer device, characterized in that: include: Memory and processor, The memory stores a computer program; The processor is used to execute the computer program stored in the memory, and when the computer program is running, the processor executes the power supply method for the charging pile inspection device according to claim 9.

13. A computer program product, comprising a computer program, characterized in that When the computer program is executed by the processor, the power supply method for the charging pile inspection device according to claim 9 is implemented.

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