CN111483339A

CN111483339A - Electric vehicle charging monitoring system, charging pile system and monitoring method

Info

Publication number: CN111483339A
Application number: CN202010309701.9A
Authority: CN
Inventors: 贾旭东; 徐孟龙; 张琪; 邱明泉; 李海涛; 杭洋; 陈海洋; 魏志宇; 张明辉; 马勇; 关朝强
Original assignee: State Grid Beijing New Energy Automobile Service Co ltd
Current assignee: State Grid Beijing New Energy Automobile Service Co ltd
Priority date: 2020-04-18
Filing date: 2020-04-18
Publication date: 2020-08-04
Anticipated expiration: 2040-04-18
Also published as: CN111483339B

Abstract

The application discloses an electric vehicle charging monitoring system, a charging pile system and a monitoring method. The electric vehicle charging monitoring system comprises: a master controller; the simulation acquisition module is respectively connected with the master controller and the charging pile; the simulation acquisition module is configured to acquire charging information of a charging pile and transmit the acquired charging information of the charging pile to the master controller, and the charging information at least comprises one of a voltage and current signal, a control guide signal and an auxiliary power supply signal. The electric vehicle charging monitoring system can record the state of each contact in the charging pile gun head in the whole charging process and store the state in the internal memory; the recorded charging process data is the basis for developing the analysis of the compatibility and the quality of the charging pile, so that data is provided for experts to diagnose whether the charging process is abnormal or not and the specific reasons causing the abnormality.

Description

Electric vehicle charging monitoring system, charging pile system and monitoring method

Technical Field

The application relates to the technical field of electric vehicle charging monitoring, in particular to an electric vehicle charging monitoring system, a charging pile system and an electric vehicle charging monitoring method.

Background

The construction of electric automobile and electric pile is growing fast, and the number of interaction times of filling electric pile and electric automobile calculates with the hundred million, in the construction and the use that fill electric pile, inevitable more problem has appeared, for example the charging efficiency is low, the charging fails, the trouble of charging, even the electric automobile is impaired scheduling problem. Charging compatibility, safety and stability between the charging pile and the electric automobile become more and more important problems. The charging process of the direct current charging pile is complex, the types of signals are various, and the direct current charging pile further comprises rapid CAN communication. The above characteristics have high requirements on the data sampling rate, and a data acquisition system is required to have high-speed data sampling capability. On the other hand, the charging time of the charging pile is often as long as several hours, the collected data volume is large, and the requirement on the storage space can be reduced only by adopting a data compression technology.

However, the currently used TCU unit communicates with the charging controller of the charging pile through the CAN according to a specified communication protocol, and recorded information is very simple, so that details of the whole charging process cannot be reflected, and a real interaction process and information between the vehicle piles cannot be reflected. For the charging pile, the interaction between the charging pile and the electric automobile is more important, and the charging efficiency is directly influenced, even the success or failure is caused. On the other hand, when charging abnormity and faults occur between the charging pile and the electric automobile, an effective means for judging reasons and clearing responsibility is lacked.

Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.

Disclosure of Invention

It is an object of the present application to provide an electric vehicle charging monitoring system that overcomes or at least mitigates at least one of the above-mentioned disadvantages of the prior art.

In order to achieve the above object, the present application provides an electric vehicle charging monitoring system, which includes:

a master controller;

the simulation acquisition module is respectively connected with the master controller and the charging pile; wherein,

the simulation acquisition module is configured to acquire charging information of charging piles and transmit the acquired charging information of the charging piles to the master controller, and the charging information at least comprises one of a voltage and current signal, a control guide signal and an auxiliary power supply signal.

Optionally, the electric vehicle charging monitoring system further includes:

the CAN message acquisition module comprises an acquisition end and an output end, and is configured to acquire CAN communication information of the charging pile and transmit the acquired CAN communication information of the charging pile to the master controller.

Optionally, the electric vehicle charging monitoring system further comprises a storage module, the storage module is connected with the general controller, and the storage module is configured to store the charging information and the CAN communication information transmitted from the general controller.

Optionally, the electric vehicle charging monitoring system further includes a wireless transmission module, the wireless transmission module is connected to the general controller, and the wireless transmission module is configured to transmit the charging information and/or the CAN communication information transmitted by the general controller to other devices.

Optionally, the analog acquisition module includes:

the voltage and current sensor module is provided with an acquisition end connected with the charging pile, and the acquisition end is configured to acquire electric analog quantity information of the charging pile;

the input end of the conditioning circuit is connected with the output end of the voltage and current sensor module, and the conditioning circuit is configured to receive the electric analog quantity information transmitted by the voltage and current sensor module and condition the electric analog quantity information so as to form conditioning information;

the input end of the A/D conversion circuit is connected with the output end of the conditioning circuit, the output end of the A/D conversion circuit is connected with the master controller, and the A/D conversion circuit is configured to receive the conditioning information, convert the conditioning information into charging information of the charging pile and transmit the charging information to the master controller.

Optionally, the CAN packet collection module includes:

the voltage sensor is connected with a CAN bus of the charging pile, and is configured to acquire a CAN signal of the CAN bus of the charging pile;

the input end of the isolation circuit is connected with the output end of the voltage sensor, the output end of the isolation circuit is connected with the master controller, and the isolation circuit is configured to perform denoising processing on CAN signals transmitted by the voltage sensor to form CAN communication information and transmit the CAN communication information to the master controller.

Optionally, the electric vehicle charging monitoring system further includes a power module, the power module is connected to the master controller and the analog acquisition module, and the power module is configured to supply power to the master controller and the analog acquisition module.

Optionally, the number of the acquisition ends of the voltage and current sensor module is five, the acquisition ends are isolated from each other, one of the acquisition ends acquires charging voltage of the charging pile, one of the acquisition ends acquires charging current of the charging pile, one of the acquisition ends acquires auxiliary power supply voltage of the charging pile, one of the acquisition ends acquires CC1 voltage of the charging pile, and the other acquisition end acquires CC2 voltage of the charging pile.

The application also provides a charging pile system, the charging pile system includes: charging piles;

the electric vehicle charging monitoring system is connected with the charging pile, and the tail of the electric vehicle charging monitoring system is the electric vehicle charging monitoring system.

Optionally, the charging pile system further comprises an alarm device, the alarm device is connected with the master controller, and the alarm device is configured to receive an alarm signal sent by the master controller and alarm according to the alarm signal.

The application also provides a charging pile monitoring method, which comprises the following steps:

step 1: in the working process of the charging pile, the charging information of the charging pile is periodically collected at preset time intervals through the electric vehicle charging monitoring system;

step 2: acquiring a preset charging process standard information table, wherein the charging process standard information table comprises standard charging information values which are periodically recorded at preset time intervals;

and step 3: comparing the acquired charging information of each period of the electric vehicle charging monitoring system 101 with the standard charging information value of the corresponding period in the preset charging process standard information table after acquisition, if a preset condition is met, determining the charging information of the period as abnormal information, recording the abnormal information and recording the occurrence frequency of the abnormal information;

and 4, step 4: acquiring preset abnormal information alarm times;

and 5: and when abnormal information occurs every time, comparing the recorded times of the abnormal information with the preset abnormal information alarm times, and if the recorded times of the abnormal information is equal to the preset abnormal information alarm times, alarming.

The electric vehicle charging monitoring system can record the state of each contact in the charging pile gun head in the whole charging process and store the state in the internal memory; the recorded charging process data is the basis for developing the analysis of the compatibility and the quality of the charging pile, so that data is provided for experts to diagnose whether the charging process is abnormal or not and the specific reasons causing the abnormality. The compatibility and the quality condition of the charging pile of each manufacturer can be evaluated as important basis for network access detection of charging facilities.

Drawings

Fig. 1 is a schematic system structure diagram of an electric vehicle charging monitoring system according to an embodiment of the present application;

FIG. 2 is a schematic diagram of the internal structure of the system of the electric vehicle charging monitoring system shown in FIG. 1;

FIG. 3 is a schematic diagram of the internal structure of the analog acquisition module shown in FIG. 1;

FIG. 4 is a schematic diagram of an internal structure of the CAN message collection module shown in FIG. 1;

FIG. 5 is a schematic diagram of the internal structure of the control module shown in FIG. 1;

fig. 6 is a schematic diagram of the internal structure of the power module shown in fig. 1.

Reference numerals

201	Analog acquisition module	401	Voltage sensor
				202	CAN message acquisition module	402	Isolation circuit
203	Master controller	501	Processor chip
				204	Memory module	502	Memory circuit
205	Wireless transmission module	503	Ethernet circuit
				301	Voltage current sensor module	206	Power supply module
302	Conditioning circuit	101	Electric vehicle charging monitoring system
				303	A/D conversion circuit	304	Analog isolation circuit

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner and are not to be considered limiting of the scope of the present application.

Fig. 1 is a schematic system structure diagram of an electric vehicle charging monitoring system according to an embodiment of the present application; FIG. 2 is a schematic diagram of the internal structure of the system of the electric vehicle charging monitoring system shown in FIG. 1; FIG. 3 is a schematic diagram of the internal structure of the analog acquisition module shown in FIG. 1; FIG. 4 is a schematic diagram of an internal structure of the CAN message collection module shown in FIG. 1; FIG. 5 is a schematic diagram of the internal structure of the control module shown in FIG. 1; fig. 6 is a schematic diagram of the internal structure of the power module shown in fig. 1.

The electric vehicle charging monitoring system shown in fig. 1 to 2 includes a master controller 203 and a simulation acquisition module 201, wherein the simulation acquisition module 201 is respectively connected with the master controller 203 and a charging pile; the simulation acquisition module 201 is configured to acquire charging information of the charging pile and transmit the acquired charging information of the charging pile to the master controller, wherein the charging information at least comprises one of a voltage and current signal, a control pilot signal and an auxiliary power supply signal.

In this embodiment, the charging information at least includes a voltage-current signal, a control pilot signal and an auxiliary power signal, and specifically includes a voltage-current signal value, a control pilot signal value and an auxiliary power signal value. More specifically, a DC + value (a direct-current power supply positive value), a DC-value (a direct-current power supply negative value), an a + value (an auxiliary power supply positive value), an a-value (an auxiliary power supply negative value), a CC1 value (a CC1 control pilot signal voltage value), and a CC2 value (a CC2 control pilot signal voltage value) of the direct-current charging pile are obtained.

Referring to fig. 2, in this embodiment, the electric vehicle charging monitoring system further includes a CAN message collection module 202, the CAN message collection module 202 includes a collection end and an output end, and the CAN collection module is configured to collect the CAN communication information of the charging pile and transmit the collected CAN communication information of the charging pile to the general controller.

Referring to fig. 2, in the present embodiment, the electric vehicle charging monitoring system further includes a storage module 204, and the storage module 204 is connected to the overall controller 203 and configured to store the charging information transmitted from the overall controller and the CAN communication information.

Referring to fig. 2, in the present embodiment, the electric vehicle charging monitoring system further includes a wireless transmission module 205, and the wireless transmission module 205 is connected to the overall controller 203 and configured to transmit the charging information and/or CAN communication information transmitted by the overall controller to other devices.

Referring to fig. 3, in this embodiment, the analog acquisition module includes a voltage and current sensor module 301, a conditioning circuit 302, and an a/D conversion circuit 303, an acquisition end of the voltage and current sensor module 301 is connected to the charging pile, and the acquisition end is configured to acquire electrical analog quantity information of the charging pile; the input end of the conditioning circuit 302 is connected with the output end of the voltage-current sensor module 301, and the conditioning circuit 302 is configured to receive the electrical analog information transmitted by the voltage-current sensor module and condition the electrical analog information to form conditioned information; the input end of the A/D conversion circuit 303 is connected with the output end of the conditioning circuit, the output end of the A/D conversion circuit 303 is connected with the master controller, and the A/D conversion circuit 303 is configured to receive conditioning information, convert the conditioning information into charging information of the charging pile and transmit the charging information to the master controller.

Referring to fig. 4, in this embodiment, the CAN message collection module includes a voltage sensor 401 and an isolation circuit 402, a collection end of the voltage sensor 401 is connected to a CAN bus of the charging pile, and the voltage sensor is configured to collect a CAN signal of the CAN bus of the charging pile; the input end of the isolation circuit 402 is connected with the output end of the voltage sensor, the output end of the isolation circuit is connected with the master controller, and the isolation circuit is configured to perform denoising processing on the CAN signal transmitted by the voltage sensor to form CAN communication information and transmit the CAN communication information to the master controller.

Referring to fig. 2, in the present embodiment, the electric vehicle charging monitoring system further includes a power module 206, and the power module 206 is connected to the overall controller 203 and the analog acquisition module, and is configured to supply power to the overall controller and the analog acquisition module.

In this embodiment, the number of the collection end of voltage and current sensor module is five, and each collection end is isolated from each other, and one of them collection end gathers the charging voltage who fills electric pile, and the charging current that fills electric pile is gathered to one collection end, the auxiliary power supply voltage that fills electric pile is gathered to one collection end, and the CC1 voltage that fills electric pile is gathered to one collection end, and the CC2 voltage that fills electric pile is gathered to one collection end.

The electric vehicle charging monitoring system has the beneficial effects that: (1) through monitoring the charging process to filling electric pile, the complete data of record in time finds the problem, eliminates the hidden danger, and the data of analysis collection is as improving the data basis that fills electric pile operation level, and the application and the industrialization prospect of project are obvious. (2) Electric automobile quantity is huge, and the in service behavior is complicated, can appear various complicated problems, and is higher to filling the requirement of electric pile. The project records charging data of the charging piles in huge quantities, provides data support for the development of the industry, and improves the quality and the operation level of the whole industry, so that relevant policies of China, national networks and Beijing city are better implemented, and the project has good cost expectation in the whole life cycle of equipment.

The invention is further illustrated by the following figures and examples.

Referring to fig. 1, there is shown an overall structural block diagram of an electric vehicle charging monitoring system of the present invention, wherein: the electric vehicle charging monitoring system 101 is installed on the direct-current charging pile, monitors and records the charging process, obtains complete charging data, and uploads the data to the cloud for storage and analysis in real time. The electric motor car monitored control system that charges is to the direct current stake control, and main control content includes: real-time waveforms in charging processes of DC +, DC-, S +, S-, A +, A-, CC1, CC2 and the like of the direct current charging pile are recorded, CAN messages are analyzed, and the requirements of the maximum 1000V/250A direct current charging pile CAN be met. The sampling frequency 2k to 125MHz can be set, and a plurality of trigger modes are supported. The recording rate can be dynamically adjusted and compressed according to the charging process.

Referring to fig. 2, there is shown an internal structure of an electric vehicle charging monitoring system 101, which includes: the analog acquisition module 201 is used for acquiring charging pile voltage and current signals DC & lt + & gt and DC & lt- & gt, controlling guide signals CC1 and CC2 and auxiliary power supply signals A & lt + & gt and A & lt- & gt; a CAN message acquisition module 202 for acquiring an S + value (a charging communication CAN positive value) and an S-value (a charging communication CAN negative value) of a CAN message signal and monitoring CAN communication data between the direct current charging pile and the electric vehicle; a master controller 203 which is responsible for the control, data processing, communication and other functions of the whole monitoring device; the storage module 204 is used for storing collected messages, voltage and current data and monitoring report data; the wireless transmission module 205 is used for transmitting data to the background server, and specifically, the wireless transmission module includes a WIFI module and/or a 4G module.

Referring to fig. 3, which shows the internal structure of the analog acquisition module 201, the analog acquisition module 201 includes: a voltage current sensor 301; a conditioning circuit 302 for adjusting various voltage levels to a specific range, and an a/D circuit 303 for converting an analog signal into a digital signal; and analog isolation circuitry 304.

In the embodiment of the invention, the analog acquisition module has 5 acquisition channels (i.e. 5 acquisition ends), and each channel is isolated from each other and respectively acquires charging voltage, charging current, auxiliary power supply voltage, CC1 voltage and CC2 voltage; in the voltage and current sensor 301, a voltage division network is adopted as a voltage sensor, a magnetically modulated direct current transformer is adopted as a current sensor, and the acquisition requirements of 1000V maximum voltage and 250A maximum current can be met, wherein a voltage sampling resistor is a sampling resistor with the precision of 0.05 percent, the temperature drift is less than 3 ppm/DEG C, and the precision of the magnetically modulated sensor is 10 ppm; the A/D conversion circuit adopts AD4003 which is a low-noise, low-power consumption, high-speed, 18-bit and 2MS/s precision Successive Approximation Register (SAR) analog-to-digital converter (ADC). The circuit integrates easy-to-use characteristics, can reduce the power consumption and complexity of a signal chain, and supports higher channel density. The combination of the high impedance mode with the long acquisition phase allows the range of a low power precision amplifier that directly drives the ADC to be extended without the use of a dedicated high power, high speed ADC driver, while still achieving excellent performance. The input range compression characteristic enables the ADC driver amplifier and the ADC to be powered using a common supply rail without the need for a negative supply. Low Serial Peripheral Interface (SPI) clock rate requirements reduce digital input/output power consumption, broaden processor options and simplify the work process of sending data across digital isolation.

Referring to fig. 4, which shows the internal structure of the CAN message collection module 202, the CAN message collection module 202 collects CAN signals through a voltage sensor 401, and sends the signals to the control module 203 through an isolation circuit 402 for message analysis; the isolation circuit 402 is powered by the power supply circuit 206.

In the embodiment of the invention, the main chip of the isolation circuit 402 adopts an ISO1050 isolation type CAN transceiver, the device CAN prevent noise current on a data bus or other circuits from entering a local ground and interfering and damaging sensitive circuits, the loop delay of the device is 150ns, the transient immunity of 50kV/us is realized, and the isolation CAN be realized at 2500 Vrms.

Referring to fig. 5, which shows the internal structure of the master controller 203, the master controller 203 sends the AD-converted digital quantity to the processor chip 501 for data processing and CAN message analysis; data caching is achieved through the storage circuit 204; the functions of data transmission, communication and the like are realized through the Ethernet circuit 502, and the wireless transmission function and the like are realized through the WIFI/4G module 205.

In an embodiment of the invention, a processor chip 501 selects Zynq 7000 series SOC of xilinx, the processor has a novel chip with dual cores, main frequency 1GHz, on-chip integrated 1G memory, 150 IO interfaces, an Extensible Processing Platform architecture (EPP) is adopted, a 28nm HKMG process is used to manufacture a low-power consumption, high-performance and high-extensibility chip, the chip adopts a dual core Cortex-A9 MPCore Processing system with NEON and a dual precision floating point engine, the full integration including L, L cache, a memory controller and peripheral equipment is completed through hard wires, a storage circuit 204 adopts a TXS 12 baseband produced by a TI company and an external SDIO peripheral interface, the device comprises a 6-channel SPDT switch with a voltage level conversion function, a single SDIO port can be connected with two SDIO peripheral equipment by three independent power rails, the two SDIO peripheral equipment can be connected with the single SDIO port through a single SDIO port and a single SDIO port, the SDIO port can be connected with the single SDIO peripheral equipment through a special SDIO port, the SDIO port can be connected with the single SDIO port through a wireless network module, a wireless communication module, a wireless network transceiver module, a wireless network module, a wireless transceiver.

Referring to fig. 6, the internal structure of the power module 206 is shown, which converts 15V DC voltage to various voltage levels through internal DC-DC circuitry to power other modules.

In the embodiment of the invention, the DC-DC circuit 601 and the DC-DC circuit 602 both adopt TPS54328 which is a self-adaptive on-time D-CAP2^TMTPS54328 mode synchronous buck converter, TPS54328 high efficiency, few components, low standby current, etc. TPS54328 main control loop uses D-CAP2 mode control, can provide fast transient response without external compensation component, adaptive on-time control can realize seamless conversion between PWM mode under higher load condition and economic mode operation under light load condition, DC-DC circuit 603 adopts L initial L T1763 series micropower, low noise, low dropout regulator, the device can provide 500mA output current under 300mV dropout, 30 muA low quiescent current makes quiescent current well controlled, L T1763 regulator key characteristic is low output noise, and external 0.01 muF bypass capacitor, within 10Hz to 100kHz bandwidth, output noise is reduced to 20 muV_RMSL T1763 regulator outputDC-DC circuit (604) uses T L V733 series low dropout linear regulators, which device inputs 1.4V to 5.5V and outputs 3.3V, is small, has low quiescent current, can provide 300mA of current, and has good line and load transient performance.the device accuracy is 1%. T L V733 series uses capacitor-less architecture design to ensure stability without input or output capacitors.DC-DC circuit (605) uses T L V733 series, inputs 1.4V to 5.5V, outputs 1.8 V.DC-DC circuit (606) provides reference for A/D circuit, uses ADR4520, which device is high accuracy, low power consumption, low noise voltage reference, has a maximum initial error of + -0.02%, temperature stability and low output noise.

In the application, the storage module 204 is used for storing the collected data such as the messages, the voltage and the current, the monitoring reports and the like, and can effectively perform efficient data storage on mass data, and the storage space exceeds 30G. Each data block can select different compression algorithms according to the data characteristics of the data block, so that high compression ratio of the data is realized.

The application also provides a charging pile system, the charging pile system comprises a charging pile and an electric vehicle charging monitoring system 101, the electric vehicle charging monitoring system is connected with the charging pile, and the tail of the electric vehicle charging monitoring system is the electric vehicle charging monitoring system.

The charging pile system further comprises an alarm device, the alarm device is connected with the master controller 203, and the alarm device is configured to receive an alarm signal sent by the master controller and give an alarm according to the alarm signal.

For example, when the charging information and/or the CAN communication information obtained by the general controller exceed a predetermined threshold, for example, any one or more of the voltage-current signals DC +, DC-, the control pilot signals CC1, CC2, and the auxiliary power signals a +, a-exceed a predetermined threshold, the general controller transmits an alarm signal to the alarm device, and the alarm signal gives an alarm according to the information.

In this embodiment, the alarm device may be an audio alarm device or an alarm lamp, for example, when the alarm device is an audio alarm device, multiple kinds of alarm sounds are preset in the alarm device, each kind of alarm sound corresponds to one condition, for example, 5 alarm sounds are preset, one alarm sound corresponds to the voltage-current signal DC +, DC-exceeding a predetermined threshold, at this time, when the master controller detects that the voltage-current signal DC +, DC-exceeding the threshold, alarm information is transmitted to the alarm device (at this time, the alarm information has an information identifier indicating what kind of alarm information the alarm device adopts for alarming), and the alarm device sends out a corresponding alarm sound according to the alarm information.

step 1: in the working process of the charging pile, the charging information of the charging pile is periodically collected at preset time intervals through the electric vehicle charging monitoring system 101;

and 4, step 4: acquiring preset abnormal information alarm times;

By adopting the mode, the alarm can be given in time when the charging pile is used, and the alarm can be given according to the preset mode of the user, thus, the user can preset conditions and abnormal information alarm times according to the self condition of the charging pile, therefore, each charging pile can give an alarm according to the characteristics of the charging pile, for example, when the charging pile is used for a long time, which may be more line-aged and more dangerous, the predetermined conditions are adjusted more strictly, so that a more timely warning can be given when problems arise, and conversely, if the new electric pile is compared, the preset conditions can be relaxed, and the user can adjust the charging pile in different areas and different use environments in a targeted manner through the preset charging process standard information table, so that more accurate monitoring is realized.

And predetermine abnormal information alarm times to can reduce the alert condition of wrong report and appear according to user's experience, when filling the electric pile and using, the condition that various electric current, voltage have the deviation can appear, then probably not influence the use of filling electric pile, consequently, through predetermineeing abnormal information alarm times, thereby can prevent the wrong report and alert, increase certain fault-tolerant space promptly.

In this embodiment, the present application further includes: step 6: and summarizing the recorded abnormal information and generating an abnormal information table.

By adopting the mode, the user can conveniently perform subsequent check, data support is provided for the user to maintain the charging pile, and the user can more easily know the time point or the position of the charging pile which is most prone to causing problems.

For example, different charging process standard information tables can be adopted for charging piles for charging large-sized electric vehicles and charging piles for charging small-sized electric vehicles.

In the present embodiment, the charging information includes a voltage current signal, a control pilot signal, and an auxiliary power signal.

In this embodiment, the standard charging information value includes a standard voltage/current signal value, a standard control pilot signal value and a standard auxiliary power signal value.

In this embodiment, the predetermined time interval may be set by itself as needed, for example, 1 second is set as one period, or may be set as 1 minute or other time.

In the present embodiment, the predetermined condition may be set by itself as needed, for example, the predetermined condition is that the difference between the two values of the relative ratio (in the present embodiment, the difference between the charging information and the standard charging information value) exceeds 0.5, the predetermined condition is that the difference between the charging information and the standard charging information value exceeds 0.2, or other values. For another example, the predetermined condition is that the ratio of the two compared values does not exceed a ratio, for example, the ratio of the two compared values does not exceed 10% (in the present embodiment, the ratio of the charging information to the standard charging information value does not exceed 10%), the value of the charging information exceeds 5% of the standard charging information value, or other values.

In this embodiment, the number of times of the abnormal information alarm may be set by itself as needed, for example, 1 time, 2 times, 3 times, or other times.

In this embodiment, step 3: comparing the acquired charging information of each period of the electric vehicle charging monitoring system 101 with the standard charging information value of the corresponding period in the preset charging process standard information table after acquisition, if a preset condition is met, determining the charging information of the period as abnormal information, recording the abnormal information and recording the frequency of the abnormal information, wherein the frequency of the abnormal information comprises:

step 31: comparing the voltage and current signal acquired by the electric vehicle charging monitoring system 101 in each period with the standard voltage and current signal value of the corresponding period in the preset charging process standard information table, if a predetermined condition is satisfied, for example, the predetermined condition is a difference between two compared values (in the embodiment, the difference between the voltage and current signal value and the standard voltage and current signal value), determining that the voltage and current signal of the period is abnormal information, recording the abnormal information, and recording the occurrence frequency of the abnormal information; the voltage current signal comprises a voltage positive value, a voltage negative value, a current positive value and a current negative value, the standard voltage current signal value comprises a standard voltage positive value, a standard voltage negative value, a standard current positive value and a standard current negative value, when the voltage positive value and the standard voltage positive value are compared, the voltage negative value and the standard voltage negative value are compared, the current positive value and the standard current positive value are compared, and the current negative value and the standard current negative value are compared, wherein any comparison meets the preset condition, namely the voltage current signal of the period is considered as abnormal information, the abnormal information (the voltage positive value, the voltage negative value, the current positive value and the current negative value) is recorded, and the occurrence frequency of the abnormal information is recorded, wherein the abnormal information is recorded once regardless of the comparison meeting the condition;

step 32: comparing the control pilot signal obtained by each period of the electric vehicle charging monitoring system 101 with the standard control pilot signal value of the corresponding period in the preset charging process standard information table, if a predetermined condition is satisfied, for example, the predetermined condition is a difference between two compared values (in the embodiment, the difference between the control pilot signal and the standard control pilot signal value), determining that the control pilot signal of the period is abnormal information, recording the abnormal information, and recording the occurrence frequency of the abnormal information. The control guide signal comprises a control guide signal positive value and a control guide signal negative value, the standard control guide signal value comprises a standard control guide signal positive value and a standard control guide signal negative value, when the comparison is carried out, the control guide signal positive value is compared with the standard control guide signal positive value, the control guide signal negative value is compared with the standard control guide signal negative value, any comparison meets the preset condition, namely the control guide signal in the period is considered to be abnormal information, the abnormal information (the control guide positive value and the control guide negative value) is recorded, the frequency of the abnormal information is recorded, and the abnormal information is recorded once regardless of the comparison of several comparison meeting the condition;

step 33: the auxiliary power signal acquired by the electric vehicle charging monitoring system 101 in each period is compared with the standard auxiliary power signal value of the corresponding period in the preset charging process standard information table, and if a predetermined condition is satisfied, for example, the predetermined condition is the difference between two compared values (in this embodiment, the difference between the auxiliary power signal and the standard auxiliary power signal value), the control pilot signal of the period is determined to be abnormal information, and the abnormal information is recorded and the number of times of occurrence of the abnormal information is recorded. Wherein, the auxiliary power signal includes auxiliary power signal positive value, auxiliary power signal negative value, standard auxiliary power signal value includes standard auxiliary power signal positive value, standard auxiliary power signal negative value, when comparing, auxiliary power signal positive value is compared with standard auxiliary power signal positive value, auxiliary power signal negative value is compared with standard auxiliary power signal negative value, wherein arbitrary one is compared and is satisfied the preset condition and deem this periodic auxiliary power signal be abnormal information promptly, record this abnormal information (auxiliary power signal positive value, auxiliary power signal negative value) and record the number of times that abnormal information appears, wherein, no matter wherein there are several to compare the satisfied condition, all record abnormal information emergence condition and be once.

The present application is described in further detail below by way of examples, it being understood that the examples do not constitute any limitation to the present application. In this example, the whole charging pile working process is divided into 7 cycles, in this embodiment, the total working time of the charging pile is divided, and assuming that the charging pile is full of one known type of battery for 1 hour, namely 60 minutes, the charging pile is collected once in a preset time, namely 10 minutes. Step 1: in the working process of the charging pile, charging information of the charging pile is periodically collected at preset time intervals through the electric vehicle charging monitoring system 101. That is, from the charging start time, it is collected every 10 minutes. That is, the first cycle at the time of start of charging, the second cycle at 10 minutes, the third cycle at 20 minutes, the fourth cycle at 30 minutes, the fifth cycle at 40 minutes, the sixth cycle at 50 minutes, and the seventh cycle at 60 minutes.

In the present embodiment, the voltage current signal, the control pilot signal, and the auxiliary power signal are acquired simultaneously every cycle.

Step 2: and acquiring a preset charging process standard information table, wherein the charging process standard information table comprises standard charging information values which are periodically recorded at preset time intervals. Similarly, the preset charging process standard information table also includes preset standard charging information values for 7 cycles, and the preset standard charging information values include standard voltage and current signal values, standard control pilot signal values, and standard auxiliary power supply signal values.

And step 3: the method comprises the steps that charging information acquired in each period of an electric vehicle charging monitoring system 101 is compared with standard charging information values of corresponding periods in a preset charging process standard information table after being acquired, if preset conditions are met, the charging information of the period is determined to be abnormal information, the abnormal information is recorded, and the occurrence frequency of the abnormal information is recorded; in particular, the amount of the solvent to be used,

step 31: comparing the voltage and current signals acquired by the electric vehicle charging monitoring system 101 in each period with the standard voltage and current signal values of the corresponding period in the preset charging process standard information table, if the predetermined condition is satisfied, determining the voltage and current signals of the period as abnormal information, recording the abnormal information and recording the times of occurrence of the abnormal information, for example, if the voltage positive value is +5, the voltage negative value-5, the current positive value +3, the current negative value-2, the standard voltage positive value +5, the standard voltage negative value-5, the standard current positive value +2 and the standard current negative value-2 in the second period, performing comparison, at this time, the difference between the two values of the predetermined condition and the comparison exceeds 0.5, it can be seen that, at this time, the difference between the standard current positive value +2 and the current positive value +3 exceeds 0.5, determining the voltage and current signals of the period as abnormal information, recording the abnormal information and recording the occurrence frequency of the abnormal information, wherein in the example, the first occurrence of the abnormal information is 1;

step 32: comparing the control pilot signal acquired by each period of the electric vehicle charging monitoring system 101 with the standard control pilot signal value of the corresponding period in the preset charging process standard information table, if a predetermined condition is met, determining the control pilot signal of the period as abnormal information, recording the abnormal information and recording the number of times of occurrence of the abnormal information, for example, assuming that a positive value of the control pilot signal in the second period meets the predetermined condition (the comparison method is similar to that described above and is not repeated again), determining the control pilot signal of the period as abnormal information, recording the abnormal information and recording the number of times of occurrence of the abnormal information, wherein in this example, the number of times of recording is 2 if the abnormal information occurs for the second time;

step 33: comparing the auxiliary power signal acquired by each period of the electric vehicle charging monitoring system 101 with the standard auxiliary power signal value of the corresponding period in the preset charging process standard information table, if a predetermined condition is met, determining the control guide signal of the period as abnormal information, recording the abnormal information and recording the frequency of the abnormal information, for example, assuming that the positive value of the auxiliary power signal in the second period meets the predetermined condition (the comparison method is similar to that described above and is not repeated again), determining the auxiliary power signal of the period as abnormal information, recording the abnormal information and recording the frequency of the abnormal information, wherein in the example, the frequency of the abnormal information is 3 if the abnormal information occurs for the third time;

it is understood that, in the actual work, the steps 31 to 33 may be performed simultaneously or in a time-sharing manner, that is, whether the preset condition is met may be determined simultaneously, or the step 31, the step 32 and the step 33 may be determined first.

And 4, step 4: acquiring preset abnormal information alarm times; if the abnormal information alarm frequency is 3, the step 5 is carried out: and when abnormal information occurs every time, comparing the recorded times of the abnormal information with the preset abnormal information alarm times, and if the recorded times of the abnormal information is equal to the preset abnormal information alarm times, alarming. If the number of times of abnormal information alarm is assumed to be 6, the number of times of abnormal information alarm is not exceeded, and monitoring is continued, namely the third period, the fourth period and other periods are continuously judged by the method until the whole charging process is finished.

The application also provides a charging pile monitoring system, which comprises:

charging piles;

the electric vehicle charging monitoring system 101 is connected with the charging pile and is the electric vehicle charging monitoring system;

the charging pile monitoring system comprises a charging pile alarm system, the charging pile alarm system is connected with the electric vehicle charging monitoring system 101 and used for acquiring charging information transmitted by the electric vehicle charging monitoring system, and the charging pile controller is used for realizing the charging pile monitoring method.

In this embodiment, the charging pile alarm system includes a charging pile controller and a charging pile alarm, wherein the charging pile controller is connected to the electric vehicle charging monitoring system 101, and is configured to acquire charging information transmitted by the electric vehicle charging monitoring system, perform comparison in the above steps 2 to 4 and step 5, generate an alarm signal when the comparison result indicates that the number of times of alarm is equal to a preset abnormal information alarm, and transmit the alarm signal to the charging pile alarm.

The charging pile alarm is used for alarming according to the alarm signal. It will be appreciated that an audible alarm or a color alarm may be provided.

It should be noted that the foregoing explanations of the method embodiments also apply to the apparatus of this embodiment, and are not repeated herein.

The application also provides an electronic device, which comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the charging pile monitoring method is realized when the processor executes the computer program.

As shown in fig. 3, the electronic device includes an input device, an input interface, a central processing unit, a memory, an output interface, an output device, and an alarm device. The input interface, the central processing unit, the memory and the output interface are mutually connected through a bus, and the input equipment and the output equipment are respectively connected with the bus through the input interface and the output interface and further connected with other components of the electronic equipment. Specifically, the input device receives input information from the outside and transmits the input information to the central processing unit through the input interface; the central processor processes the input information based on computer-executable instructions stored in memory 504 to generate output information, stores the output information temporarily or permanently in memory, and then transmits the output information to an output device via an output interface; the output device outputs the output information to the alarm device for use.

Although the present application has been described with reference to the preferred embodiments, it is not intended to limit the present application, and those skilled in the art can make variations and modifications without departing from the spirit and scope of the present application.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer-readable media include both non-transitory and non-transitory, removable and non-removable media that implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Furthermore, it will be obvious that the term "comprising" does not exclude other elements or steps. A plurality of units, modules or devices recited in the device claims may also be implemented by one unit or overall device by software or hardware. The terms first, second, etc. are used to identify names, but not any particular order.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks identified in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The Processor in this embodiment may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, and so on. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory may be used to store computer programs and/or modules, and the processor may implement various functions of the apparatus/terminal device by running or executing the computer programs and/or modules stored in the memory, as well as by invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.

In this embodiment, the module/unit integrated with the apparatus/terminal device may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, all or part of the flow in the method according to the embodiments of the present invention may also be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of the embodiments of the method. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain content that is appropriately increased or decreased as required by legislation and patent practice in the jurisdiction. Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. An electric vehicle charging monitoring system, comprising:

a master controller (203);

the simulation acquisition module (201), the simulation acquisition module (201) is respectively connected with the master controller (203) and the charging pile; wherein,

the simulation acquisition module (201) is configured to acquire charging information of the charging pile and transmit the acquired charging information of the charging pile to the master controller.

2. The electric vehicle charging monitoring system of claim 1, further comprising:

the CAN message acquisition module (202) comprises an acquisition end and an output end, and is configured to acquire CAN communication information of the charging pile and transmit the acquired CAN communication information of the charging pile to the master controller.

3. The electric vehicle charging monitoring system of claim 2, further comprising a storage module (204), the storage module (204) being connected to the overall controller (203), the storage module being configured to store the charging information and the CAN communication information transferred from the overall controller.

4. The electric vehicle charging monitoring system according to claim 3, further comprising a wireless transmission module (205), wherein the wireless transmission module (205) is connected with the general controller (203), and the wireless transmission module is configured to transmit the charging information and/or the CAN communication information transmitted by the general controller to other devices.

5. The electric vehicle charging monitoring system of claim 1, wherein the analog acquisition module comprises:

a voltage and current sensor module (301), wherein a collection end of the voltage and current sensor module (301) is connected with the charging pile, and the collection end is configured to collect electric analog quantity information of the charging pile;

a conditioning circuit (302), an input of the conditioning circuit (302) being connected to an output of the voltage-current sensor module (301), the conditioning circuit (302) being configured to receive electrical analog information delivered by the voltage-current sensor module and condition the electrical analog information to form conditioned information;

the input end of the A/D conversion circuit (303) is connected with the output end of the conditioning circuit, the output end of the A/D conversion circuit (303) is connected with the master controller, and the A/D conversion circuit (303) is configured to receive the conditioning information, convert the conditioning information into charging information of the charging pile and transmit the charging information to the master controller.

6. The electric vehicle charging monitoring system of claim 2, wherein the CAN message collection module comprises:

a voltage sensor (401), wherein a collecting end of the voltage sensor (401) is connected with a CAN bus of the charging pile, and the voltage sensor is configured to collect CAN signals of the CAN bus of the charging pile;

the input end of the isolation circuit (402) is connected with the output end of the voltage sensor, the output end of the isolation circuit is connected with the master controller, and the isolation circuit is configured to perform denoising processing on CAN signals transmitted by the voltage sensor to form CAN communication information and transmit the CAN communication information to the master controller.

7. The electric vehicle charging monitoring system of claim 1, wherein the charging information comprises a voltage current signal, a control pilot signal, and an auxiliary power signal.

8. The charging monitoring system for the electric vehicle as claimed in claim 5, wherein the number of the collecting terminals of the voltage and current sensor module is five, and the collecting terminals are isolated from each other, wherein one collecting terminal collects the charging voltage of the charging pile, one collecting terminal collects the charging current of the charging pile, one collecting terminal collects the auxiliary power voltage of the charging pile, one collecting terminal collects the CC1 voltage of the charging pile, and one collecting terminal collects the CC2 voltage of the charging pile.

9. A charging pile system, comprising:

charging piles;

an electric vehicle charging monitoring system (101) connected to the charging pile, the electric vehicle charging monitoring system being as defined in any one of claims 1 to 8.

10. A charging pile monitoring method is characterized by comprising the following steps:

periodically collecting charging information of a charging pile at preset time intervals by an electric vehicle charging monitoring system (101) according to any one of claims 1 to 8 during the operation of the charging pile;

acquiring a preset charging process standard information table, wherein the charging process standard information table comprises standard charging information values which are periodically recorded at the preset time interval;

comparing the acquired charging information of each period of the electric vehicle charging monitoring system (101) with the standard charging information value of the corresponding period in the preset charging process standard information table after acquisition, if a preset condition is met, determining the charging information of the period as abnormal information, recording the abnormal information and recording the occurrence frequency of the abnormal information;

acquiring preset abnormal information alarm times;

and when abnormal information occurs every time, comparing the recorded times of the abnormal information with the preset abnormal information alarm times, and if the recorded times of the abnormal information is equal to the preset abnormal information alarm times, alarming.