CN108828353A - A kind of charging pile trouble hunting system and method - Google Patents
A kind of charging pile trouble hunting system and method Download PDFInfo
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- CN108828353A CN108828353A CN201810508107.5A CN201810508107A CN108828353A CN 108828353 A CN108828353 A CN 108828353A CN 201810508107 A CN201810508107 A CN 201810508107A CN 108828353 A CN108828353 A CN 108828353A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
This application involves a kind of charging pile trouble hunting system and methods, wherein and the system comprises fault acquisition device, failure recorded broadcast instrument, Intelligent self-checking socket and fault diagnosis cloud systems, wherein：The fault acquisition device, for acquiring the hardware operating status of charging pile and the communication data of communication bus；The failure recorded broadcast instrument, for carrying out line compression processing and data encryption to the hardware operating status received and the communication data；The Intelligent self-checking socket, for providing fictitious load interface for the charging pile；The fault diagnosis cloud system, the data sent for receiving the failure recorded broadcast instrument, and classification analysis is carried out to the data, and the charging pile is diagnosed and analyzed offline by the Intelligent self-checking socket according to classification analysis result.Technical solution provided by the present application can carry out detection and diagnosis to the components to break down in charging pile in time.
Description
Technical field
This application involves electric car charging technique field, in particular to a kind of charging pile trouble hunting system and method.
Background technique
Currently in the case where wideling popularize electric car use, electric car electrically-charging equipment is simultaneously also large-scale emerging
It builds, with the Large scale construction and installation of charging pile, a large amount of failures of charging pile and exposed day by day the problem of maintenance not in time.
Charging pile is as a kind of large power-consuming equipment at present, outdoors using being easy to happen failure.Therefore electric vehicle
Car owner many times reaches charging parking stall discovery charging pile and is not available, affect car owner when finding nearby charging pile charges
Driving planning and usage experience.And for charging pile manufacturer, since charging pile degree of intelligence is low, product is working
When in without monitoring and without controlled state, producer after-sale service personnel do not know equipment fault when reaching scene when problem occurs
Which point precisely can not carry out fault location to components, seriously affect maintenance efficiency, extended trouble duration at.
It is analyzed for above situation, with the operation of a large amount of charging piles, vehicle increases successively, will expose charging pile
High failure rate and it is available few, car owner can not find usable charging pile, reduce the charging experience of car owner, delay electric car
It popularizes.
Summary of the invention
The application's is designed to provide a kind of charging pile trouble hunting system and method, can go out in time in charging pile
The components of existing failure carry out detection and diagnosis.
To achieve the above object, the application provides a kind of charging pile trouble hunting system, and the system comprises fault collections
Device, failure recorded broadcast instrument, Intelligent self-checking socket and fault diagnosis cloud system, wherein：
The fault acquisition device, for acquiring the hardware operating status of charging pile and the communication data of communication bus, and
The hardware operating status of acquisition and the communication data are sent to the failure recorded broadcast instrument；
The failure recorded broadcast instrument, for being pressed online the hardware operating status received and the communication data
Contracting processing and data encryption, and data are uploaded to the fault diagnosis cloud system by treated；
The Intelligent self-checking socket, for providing fictitious load interface for the charging pile, the fictitious load interface is used
In realizing long-range self-test, inspection and fault location function for charging pile；
The fault diagnosis cloud system, the data sent for receiving the failure recorded broadcast instrument, and the data are carried out
Classification analysis, and the charging pile is diagnosed and divided offline by the Intelligent self-checking socket according to classification analysis result
Analysis, with the components that the determination charging pile breaks down, and pushes to maintenance personal's for the components information to break down
Client.
Further, the system also includes work order servers, and the work order server is for receiving the fault diagnosis
The fault diagnosis result that cloud system is sent, and work order is established for the fault diagnosis result；Wherein, the work order
According to settling time, deposit in the O&M inventory of the work order server.
Further, the work order server is also used to the work order in the O&M inventory pushing to the maintenance
In the client of personnel, after the maintenance personal, which is directed to the work order received, completes maintenance of equipment, pass through the visitor
Family end repairs to the work order server feedback and completes prompt, so that the work order server is by the work order of push
It is checked and write off from the O&M inventory.
Further, the fault diagnosis cloud system is also used to receive the failure reported when field maintenance, and by described
Intelligent self-checking socket executes the operation of software upgrading and remote debugging to the charging pile.
Further, the charging pile includes AC distribution module, power module, DC distribution module and charging gun mould
Block；Correspondingly, the hardware operating status of the fault acquisition device acquisition charging pile includes：
The fault acquisition device acquires the signal that side is exchanged in the AC distribution module；
The fault acquisition device acquires the output signal and digital controlled signal of the power module；
The fault acquisition device acquires the DC side signal of the DC distribution module；
The fault acquisition device acquires the number of the electronic lock of the charging gun, connection confirmation circuit and temperature sensor
According to.
Further, the fault diagnosis cloud system is also used to diagnose A.C. contactor in the AC distribution module, opens
Powered-down source, relay and lightning protection component failure；It is also used to diagnose the failure of the power module；It is also used to diagnose described straight
Flow the failure of D.C. contactor, fuse in Power entry module；It is also used to set by the Intelligent self-checking socket for the charging pile
Count long-range self-test and patrol mode.
To achieve the above object, the application provides a kind of charging pile trouble hunting method, the method includes：
Fault acquisition device acquires the hardware operating status of charging pile and the communication data of communication bus, and by the institute of acquisition
It states hardware operating status and the communication data is sent to failure recorded broadcast instrument；
The failure recorded broadcast instrument carries out at line compression the hardware operating status received and the communication data
Reason and data encryption, and data are uploaded to fault diagnosis cloud system by treated；
Intelligent self-checking socket provides fictitious load interface for the charging pile, and the fictitious load interface is used to be charging pile
Realize long-range self-test, inspection and fault location function；
The fault diagnosis cloud system receives the data that the failure recorded broadcast instrument is sent, and sort out to the data and divide
Analysis, and the charging pile is diagnosed and analyzed offline by the Intelligent self-checking socket according to classification analysis result, with true
Determine the components that the charging pile breaks down, and the components information to break down is pushed to the client of maintenance personal.
Further, the method also includes：
Work order server receives the fault diagnosis result that the fault diagnosis cloud system is sent, and is directed to the fault diagnosis
As a result work order is established；Wherein, the work order deposits in the O&M inventory of the work order server according to settling time
In.
Further, the method also includes：
The work order server pushes to the work order in the O&M inventory in the client of the maintenance personal,
After the maintenance personal, which is directed to the work order received, completes maintenance of equipment, taken by the client to the work order
Device feedback of being engaged in, which is repaired, completes prompt, so that the work order server is by the work order of push from the O&M inventory
It checks and writes off.
Further, the charging pile includes AC distribution module, power module, DC distribution module and charging gun mould
Block；Correspondingly, the hardware operating status of the fault acquisition device acquisition charging pile includes：
The fault acquisition device acquires the signal that side is exchanged in the AC distribution module；
The fault acquisition device acquires the output signal and digital controlled signal of the power module；
The fault acquisition device acquires the DC side signal of the DC distribution module；
The fault acquisition device acquires the number of the electronic lock of the charging gun, connection confirmation circuit and temperature sensor
According to；
Correspondingly, the fault diagnosis cloud system is also used to diagnose A.C. contactor in the AC distribution module, switch
The failure of power supply, relay and lightning protection component；It is also used to diagnose the failure of the power module；It is also used to diagnose the direct current
The failure of D.C. contactor, fuse in Power entry module；It is also used to design by the Intelligent self-checking socket for the charging pile
Long-range self-test and patrol mode.
Technical solution provided by the present application, can be widely applied to existing electric automobile charging station/stake, be by installing this additional
System can carry out the recorded broadcast of failure big data, malfunction self-test, Off-line faults diagnosis analysis and component to online equipment constantly
Positioning, while improving maintenance efficiency, also improves the availability of charging pile.On the one hand, the application can be formed completely
Product generates economic benefit directly as electric automobile charging station/stake ancillary equipment；It on the other hand, and can be with electronic vapour
Vehicle charge control combines, and pushes the modularization and intelligence of electric automobile charging pile, thus have very big economic benefit and
Social benefit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of charging pile trouble hunting system in the application；
Fig. 2 is the flow chart of charging pile trouble hunting method in the application.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in mode is applied, the technical solution in the application embodiment is clearly and completely described, it is clear that described
Embodiment is only a part of embodiment of the application, rather than whole embodiments.Based on the embodiment party in the application
Formula, all other embodiment obtained by those of ordinary skill in the art without making creative efforts, is all answered
When the range for belonging to the application protection.
Referring to Fig. 1, the application provides a kind of charging pile trouble hunting system, the system comprises fault acquisition devices, event
Hinder recorded broadcast instrument, Intelligent self-checking socket and fault diagnosis cloud system, wherein：
The fault acquisition device, for acquiring the hardware operating status of charging pile and the communication data of communication bus, and
The hardware operating status of acquisition and the communication data are sent to the failure recorded broadcast instrument；
The failure recorded broadcast instrument, for being pressed online the hardware operating status received and the communication data
Contracting processing and data encryption, and data are uploaded to the fault diagnosis cloud system by treated；
The Intelligent self-checking socket, for providing fictitious load interface for the charging pile, the fictitious load interface is used
In realizing long-range self-test, inspection and fault location function for charging pile；
The fault diagnosis cloud system, the data sent for receiving the failure recorded broadcast instrument, and the data are carried out
Classification analysis, and the charging pile is diagnosed and divided offline by the Intelligent self-checking socket according to classification analysis result
Analysis, with the components that the determination charging pile breaks down, and pushes to maintenance personal's for the components information to break down
Client.
In one embodiment, the system also includes work order server, the work order server is described for receiving
The fault diagnosis result that fault diagnosis cloud system is sent, and work order is established for the fault diagnosis result；Wherein, described
Work order is deposited in the O&M inventory of the work order server according to settling time.
In one embodiment, the work order server is also used to push to the work order in the O&M inventory
In the client of the maintenance personal, after the maintenance personal, which is directed to the work order received, completes maintenance of equipment, lead to
It crosses the client and repairs completion prompt to the work order server feedback, so that the work order server will be described in push
Work order is checked and write off from the O&M inventory.
In one embodiment, the fault diagnosis cloud system is also used to receive the failure reported when field maintenance, and
The operation of software upgrading and remote debugging is executed to the charging pile by the Intelligent self-checking socket.
In one embodiment, the charging pile include AC distribution module, power module, DC distribution module and
Charging gun module；Correspondingly, the hardware operating status of the fault acquisition device acquisition charging pile includes：
The fault acquisition device acquires the signal that side is exchanged in the AC distribution module；
The fault acquisition device acquires the output signal and digital controlled signal of the power module；
The fault acquisition device acquires the DC side signal of the DC distribution module；
The fault acquisition device acquires the number of the electronic lock of the charging gun, connection confirmation circuit and temperature sensor
According to.
In one embodiment, the fault diagnosis cloud system is also used to diagnose to exchange in the AC distribution module and connect
Tentaculum, Switching Power Supply, the failure of relay and lightning protection component；It is also used to diagnose the failure of the power module；It is also used to examine
The failure of D.C. contactor, fuse in the DC distribution module of breaking；It is also used to through the Intelligent self-checking socket, is described
Charging pile designs long-range self-test and patrol mode.
In practical application scene, which includes：
Failure recorded broadcast instrument：Equipment is acquired by fault acquisition device and runs hardware state, and the communication of monitoring system inside/outside portion is total
Line communication data is completed at the same time the line compression of a large amount of high density datas, and data encryption and file upload, and finally receives cloud control
System instruction is remotely operated and is controlled to equipment.
Fault acquisition device：Acquisition system analog quantity, the real-time status of digital quantity, and pass data to failure recorded broadcast instrument.
Intelligent self-checking socket：Fictitious load interface is provided for the long-range self-test of charger, inspection and fault location, assists cloud
Complete equipment fault positioning.
Fault diagnosis cloud system：The core of system, it is a large amount of by being obtained from failure recorded broadcast instrument by a set of cloud computing system
Running state data carries out classification analysis, and depth calculation realizes the offline diagnosis and analysis of charging pile failure, to be accurately positioned
Failure components are quickly pushed to after-sales service personnel.
In addition, charging pile is divided into four big functional areas, detection and diagnosis is carried out to the components of four big functional areas respectively, it is former
It manages as follows：
The detection of AC distribution：Acquisition exchange survey signal, by fault diagnosis cloud diagnose A.C. contactor, Switching Power Supply,
The failure of the components such as relay and lightning protection；
The detection of power module：Acquisition module output and digital signal, pass through fault diagnosis cloud diagnostic module failure；
The detection of DC distribution：Signal is surveyed in acquisition exchange, diagnoses D.C. contactor, fuse etc. zero by fault diagnosis cloud
The failure of component；
The detection of charging gun：Charging gun electronic lock, connection confirmation circuit and charging are completed by installing Intelligent self-checking socket additional
The detection of rifle temperature sensor, while designing long-range self-test and patrol mode.
Referring to Fig. 2, the application also provides a kind of charging pile trouble hunting method, the method includes：
S1：Fault acquisition device acquires the hardware operating status of charging pile and the communication data of communication bus, and will acquisition
The hardware operating status and the communication data be sent to failure recorded broadcast instrument；
S2：The failure recorded broadcast instrument carries out line compression to the hardware operating status received and the communication data
Processing and data encryption, and data are uploaded to fault diagnosis cloud system by treated；
S3：Intelligent self-checking socket provides fictitious load interface for the charging pile, and the fictitious load interface is used to fill
Long-range self-test, inspection and fault location function are realized in electric stake；
S4：The fault diagnosis cloud system receives the data that the failure recorded broadcast instrument is sent, and returns to the data
Alanysis, and the charging pile is diagnosed and analyzed offline by the Intelligent self-checking socket according to classification analysis result,
With the components that the determination charging pile breaks down, and the components information to break down is pushed to the client of maintenance personal
End.
In one embodiment, the method also includes：
Work order server receives the fault diagnosis result that the fault diagnosis cloud system is sent, and is directed to the fault diagnosis
As a result work order is established；Wherein, the work order deposits in the O&M inventory of the work order server according to settling time
In.
In one embodiment, the method also includes：
The work order server pushes to the work order in the O&M inventory in the client of the maintenance personal,
After the maintenance personal, which is directed to the work order received, completes maintenance of equipment, taken by the client to the work order
Device feedback of being engaged in, which is repaired, completes prompt, so that the work order server is by the work order of push from the O&M inventory
It checks and writes off.
In one embodiment, the charging pile include AC distribution module, power module, DC distribution module and
Charging gun module；Correspondingly, the hardware operating status of the fault acquisition device acquisition charging pile includes：
The fault acquisition device acquires the signal that side is exchanged in the AC distribution module；
The fault acquisition device acquires the output signal and digital controlled signal of the power module；
The fault acquisition device acquires the DC side signal of the DC distribution module；
The fault acquisition device acquires the number of the electronic lock of the charging gun, connection confirmation circuit and temperature sensor
According to；
Correspondingly, the fault diagnosis cloud system is also used to diagnose A.C. contactor in the AC distribution module, switch
The failure of power supply, relay and lightning protection component；It is also used to diagnose the failure of the power module；It is also used to diagnose the direct current
The failure of D.C. contactor, fuse in Power entry module；It is also used to design by the Intelligent self-checking socket for the charging pile
Long-range self-test and patrol mode.
Technical solution provided by the present application, can be widely applied to existing electric automobile charging station/stake, be by installing this additional
System can carry out the recorded broadcast of failure big data, malfunction self-test, Off-line faults diagnosis analysis and component to online equipment constantly
Positioning, while improving maintenance efficiency, also improves the availability of charging pile.On the one hand, the application can be formed completely
Product generates economic benefit directly as electric automobile charging station/stake ancillary equipment；It on the other hand, and can be with electronic vapour
Vehicle charge control combines, and pushes the modularization and intelligence of electric automobile charging pile, thus have very big economic benefit and
Social benefit.
Those skilled in the art are supplied to the purpose described to the description of the various embodiments of the application above.It is not
It is intended to exhaustion or be not intended to and limit the invention to single disclosed embodiment.As described above, the application's is various
Substitution and variation will be apparent for above-mentioned technology one of ordinary skill in the art.Therefore, although specifically begging for
Some alternative embodiments are discussed, but other embodiment will be apparent or those skilled in the art are opposite
It is easy to obtain.The application is intended to include all substitutions of the invention discussed herein, modification and variation, and falls in
Other embodiment in the spirit and scope of above-mentioned application.
Claims (10)
1. a kind of charging pile trouble hunting system, which is characterized in that the system comprises fault acquisition devices, failure recorded broadcast instrument, intelligence
Energy self-detection socket and fault diagnosis cloud system, wherein：
The fault acquisition device for acquiring the hardware operating status of charging pile and the communication data of communication bus, and will be adopted
The hardware operating status and the communication data of collection are sent to the failure recorded broadcast instrument；
The failure recorded broadcast instrument, for being carried out at line compression to the hardware operating status received and the communication data
Reason and data encryption, and data are uploaded to the fault diagnosis cloud system by treated；
The Intelligent self-checking socket, for providing fictitious load interface for the charging pile, the fictitious load interface is for being
Charging pile realizes long-range self-test, inspection and fault location function；
The fault diagnosis cloud system, the data sent for receiving the failure recorded broadcast instrument, and the data are sorted out
Analysis, and the charging pile is diagnosed and analyzed offline by the Intelligent self-checking socket according to classification analysis result, with
It determines the components that the charging pile breaks down, and the components information to break down is pushed to the client of maintenance personal
End.
2. system according to claim 1, which is characterized in that the system also includes work order server, the work order clothes
Business device establishes fortune for receiving the fault diagnosis result that the fault diagnosis cloud system is sent, and for the fault diagnosis result
Tie up work order；Wherein, the work order is deposited in the O&M inventory of the work order server according to settling time.
3. system according to claim 2, which is characterized in that the work order server is also used to will be in the O&M inventory
Work order push in the client of the maintenance personal, completed when the maintenance personal is directed to the work order that receives
It after maintenance of equipment, is repaired by the client to the work order server feedback and completes prompt, so that the work order takes
Business device checks and writes off the work order of push from the O&M inventory.
4. system according to claim 1, which is characterized in that the fault diagnosis cloud system is also used to receive field maintenance
When the failure that reports, and the operation of software upgrading and remote debugging is executed by the Intelligent self-checking socket to the charging pile.
5. system according to claim 1, which is characterized in that the charging pile include AC distribution module, power module,
DC distribution module and charging gun module；Correspondingly, the hardware operating status of the fault acquisition device acquisition charging pile includes：
The fault acquisition device acquires the signal that side is exchanged in the AC distribution module；
The fault acquisition device acquires the output signal and digital controlled signal of the power module；
The fault acquisition device acquires the DC side signal of the DC distribution module；
The fault acquisition device acquires the data of the electronic lock of the charging gun, connection confirmation circuit and temperature sensor.
6. system according to claim 5, which is characterized in that the fault diagnosis cloud system is also used to diagnose the exchange
The failure of A.C. contactor, Switching Power Supply, relay and lightning protection component in Power entry module；It is also used to diagnose the power module
Failure；It is also used to diagnose the failure of D.C. contactor, fuse in the DC distribution module；It is also used to through the intelligence
Self-detection socket designs long-range self-test and patrol mode for the charging pile.
7. a kind of charging pile trouble hunting method, which is characterized in that the method includes：
Fault acquisition device acquires the hardware operating status of charging pile and the communication data of communication bus, and by the described hard of acquisition
Part operating status and the communication data are sent to failure recorded broadcast instrument；
The failure recorded broadcast instrument to the hardware operating status received and the communication data carry out line compression processing and
Data encryption processing, and data are uploaded to fault diagnosis cloud system by treated；
Intelligent self-checking socket provides fictitious load interface for the charging pile, and the fictitious load interface is used to realize for charging pile
Long-range self-test, inspection and fault location function；
The fault diagnosis cloud system receives the data that the failure recorded broadcast instrument is sent, and carries out classification analysis to the data,
And the charging pile is diagnosed and analyzed offline by the Intelligent self-checking socket according to classification analysis result, to determine
The components that charging pile breaks down are stated, and the components information to break down is pushed to the client of maintenance personal.
8. the method according to the description of claim 7 is characterized in that the method also includes：
Work order server receives the fault diagnosis result that the fault diagnosis cloud system is sent, and is directed to the fault diagnosis result
Establish work order；Wherein, the work order is deposited in the O&M inventory of the work order server according to settling time.
9. according to the method described in claim 8, it is characterized in that, the method also includes：
The work order server pushes to the work order in the O&M inventory in the client of the maintenance personal, works as institute
It states maintenance personal to be directed to after the work order that receives completes maintenance of equipment, by the client to the work order server
Prompt is completed in feedback maintenance, so that the work order server is by the work order of push from the O&M inventory center
Pin.
10. the method according to the description of claim 7 is characterized in that the charging pile includes AC distribution module, power supply mould
Block, DC distribution module and charging gun module；Correspondingly, the hardware operating status packet of the fault acquisition device acquisition charging pile
It includes：
The fault acquisition device acquires the signal that side is exchanged in the AC distribution module；
The fault acquisition device acquires the output signal and digital controlled signal of the power module；
The fault acquisition device acquires the DC side signal of the DC distribution module；
The fault acquisition device acquires the data of the electronic lock of the charging gun, connection confirmation circuit and temperature sensor；
Correspondingly, the fault diagnosis cloud system be also used to diagnose A.C. contactor in the AC distribution module, Switching Power Supply,
The failure of relay and lightning protection component；It is also used to diagnose the failure of the power module；It is also used to diagnose the DC distribution
The failure of D.C. contactor, fuse in module；It is also used to through the Intelligent self-checking socket, it is long-range for charging pile design
Self-test and patrol mode.
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| CN109739020A (en) * | 2018-11-21 | 2019-05-10 | 国家电网有限公司 | Wearable smart machine system for the maintenance of electric automobile charging pile O&M |
| CN109552102A (en) * | 2018-12-03 | 2019-04-02 | 深圳前海点点电工网络科技有限公司 | Electrically-charging equipment operation and the integrated failure prediction method of O&M |
| CN109738720A (en) * | 2018-12-20 | 2019-05-10 | 国网北京市电力公司 | The method for determining running state and device of charging pile |
| CN109752615A (en) * | 2019-01-21 | 2019-05-14 | 福建工程学院 | A kind of automobile charging pile monitoring and maintenance method |
| CN110133395A (en) * | 2019-04-04 | 2019-08-16 | 国网电动汽车服务有限公司 | A kind of charging pile health status diagnostic method and device |
| CN110865257B (en) * | 2019-11-27 | 2021-11-30 | 郑州中豫绿能电子科技有限公司 | Fault diagnosis method based on charging pile group |
| CN110865257A (en) * | 2019-11-27 | 2020-03-06 | 郑州中豫绿能电子科技有限公司 | Fault diagnosis method based on charging pile group |
| CN112393127A (en) * | 2021-01-19 | 2021-02-23 | 浙江和达科技股份有限公司 | Urban water supply network leakage management and control system |
| CN112393127B (en) * | 2021-01-19 | 2021-03-26 | 浙江和达科技股份有限公司 | Urban water supply network leakage management and control system |
| CN113358956A (en) * | 2021-06-02 | 2021-09-07 | 度普(苏州)新能源科技有限公司 | Detection method, detection device and detection system of mobile charging pile |
| CN113358956B (en) * | 2021-06-02 | 2024-04-09 | 度普(苏州)新能源科技有限公司 | Detection method, detection device and detection system of movable charging pile |
| CN113468806A (en) * | 2021-06-23 | 2021-10-01 | 度普(苏州)新能源科技有限公司 | Fault detection method and device for energy storage charging pile and computer readable storage medium |
| CN114435172A (en) * | 2022-03-01 | 2022-05-06 | 深圳市中鑫新能源科技有限公司 | Automatically-managed intelligent charging pile and intelligent charging method for new energy automobile |
| CN114435172B (en) * | 2022-03-01 | 2022-11-22 | 深圳市中鑫新能源科技有限公司 | Automatically-managed intelligent charging pile and intelligent charging method for new energy automobile |
| CN115065591A (en) * | 2022-06-22 | 2022-09-16 | 广东电网有限责任公司广州供电局 | Electric vehicle charging pile fault early warning system and method based on state space model |
| CN115065591B (en) * | 2022-06-22 | 2023-10-20 | 广东电网有限责任公司广州供电局 | Electric vehicle charging pile fault early warning system and method based on state space model |
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