CN113985178B - Charging pile state detection method, device, equipment and storage medium - Google Patents
Charging pile state detection method, device, equipment and storage medium Download PDFInfo
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- CN113985178B CN113985178B CN202111270649.1A CN202111270649A CN113985178B CN 113985178 B CN113985178 B CN 113985178B CN 202111270649 A CN202111270649 A CN 202111270649A CN 113985178 B CN113985178 B CN 113985178B
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- 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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- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The application relates to a method, a device, equipment and a storage medium for detecting the state of a charging pile, in particular to the field of new energy. The method comprises the following steps: receiving a first charging record and a second charging record uploaded by a target vehicle; determining a first insulation state of the target vehicle when the first charging pile is charged according to the first charging record; when the first insulation state is abnormal, determining a second insulation state of the target vehicle when the second charging pile is charged according to the second charging record; and judging the position relation between the first charging pile and the second charging pile, and determining the state of the first charging pile according to the judging result and the second insulation state. Through the scheme, the safety state of each charging pile can be known more conveniently and quickly by each vehicle, and potential safety hazards of the electric vehicle during charging caused by abnormal insulating states of the charging piles are reduced as much as possible.
Description
Technical Field
The invention relates to the field of new energy, in particular to a method, a device, equipment and a storage medium for detecting the state of a charging pile.
Background
The demand of new energy electric vehicles rises sharply, and the charging pile has an irreplaceable position as an external device for charging a rechargeable battery of the electric vehicle.
Because the quality and the state of each charging pile are good and bad, partial charging piles have the condition of low insulation, when the vehicle is charged by the charging piles with low insulation, the insulation resistance value of the whole vehicle is low, and the risks of damaging personal and property safety of users and causing battery damage caused by electric leakage exist. In order to avoid the above problems, a charging manufacturer usually checks each charging pile regularly, so as to avoid the quality problem of the charging pile from influencing the insulation resistance of the whole vehicle as much as possible.
Among the above-mentioned scheme, electric vehicle can't in time know whether fill electric pile safety, has great potential safety hazard.
Disclosure of Invention
The application provides a charging pile state detection method, a charging pile state detection device, computer equipment and a storage medium, which can reduce potential safety hazards during charging of an electric vehicle.
In one aspect, there is provided a charging pile state detection method, which is performed by a cloud server, the method including:
Receiving a first charging record and a second charging record uploaded by a target vehicle; the first charging record is used for indicating the charging condition of the target vehicle on a first charging pile; the second charging record is used for indicating the charging condition of the target vehicle on a second charging pile;
Determining a first insulation state of the target vehicle when the first charging pile is charged according to the first charging record;
When the first insulation state is abnormal, determining a second insulation state of the target vehicle when a second charging pile is charged according to the second charging record;
And judging the position relation between the first charging pile and the second charging pile, and determining the state of the first charging pile according to the judging result and the second insulation state so as to inform each vehicle in the area where the first charging pile is positioned of the state of the first charging pile.
In still another aspect, a charging pile state detection device is provided, where the device is applied to a cloud server, and the device includes:
The charging record receiving module is used for receiving the first charging record and the second charging record uploaded by the target vehicle; the first charging record is used for indicating the charging condition of the target vehicle on a first charging pile; the second charging record is used for indicating the charging condition of the target vehicle on a second charging pile;
the first insulation state determining module is used for determining a first insulation state of the target vehicle when the first charging pile is charged according to the first charging record;
A second insulation state determining module, configured to determine, when the first insulation state is abnormal, a second insulation state of the target vehicle when the second charging pile is charged according to the second charging record;
And the charging pile state determining module is used for judging the position relation between the first charging pile and the second charging pile, and determining the state of the first charging pile according to the judging result and the second insulation state so as to inform each vehicle in the area where the first charging pile is located of the state of the first charging pile.
In one possible implementation, the charging pile status determination module is further configured to,
And when the insulation resistance value of the target vehicle after the first charging pile is charged is greater than a safety threshold, judging the position relationship between the first charging pile and the second charging pile according to the position information recorded in the first charging record and the position information recorded in the second charging record.
In one possible implementation manner, the first charging record includes a change condition of an insulation resistance value of the target vehicle when the first charging pile is charged;
The first insulation state determining module is further configured to,
The determining, according to the first charging record, a first insulation state of the target vehicle when the first charging pile is charged, includes:
dividing the first charging record into charging intervals with target quantity, and calculating a first average insulation resistance value of each charging interval;
Performing linear fitting on the first average insulation resistance values of all the charging intervals to obtain a first fitting curve;
And when the slope of the first fitting curve is smaller than 0 and the ratio of the minimum value to the maximum value in the first average insulation resistance is smaller than a proportional threshold, determining that the first insulation state of the target vehicle when the first charging pile is charged is an abnormal state.
In one possible implementation manner, the two charging records include an insulation resistance value change condition of the target vehicle when the second charging pile is charged;
the second insulation state determining module is further configured to,
Dividing the second charging record into charging intervals with target quantity, and calculating a second average insulation resistance value of each charging interval;
Performing linear fitting on the second average insulation resistance values of all the charging intervals to obtain a second fitting curve;
When the slope of the second fitting curve is smaller than 0 and the ratio of the minimum value to the maximum value in the second average insulation resistance is smaller than a proportional threshold, determining that a second insulation state of the target vehicle when the second charging pile is charged is an abnormal state;
when the slope of the second fitting curve is larger than 0, determining that a second insulation state of the target vehicle is a normal state when a second charging pile is charged;
and when the slope of the second fitting curve is smaller than 0 and the ratio of the minimum value to the maximum value in the second average insulation resistance is larger than a proportional threshold, determining that the second insulation state of the target vehicle when the second charging pile is charged is a normal state.
In one possible implementation, the charging pile status determination module is configured to, in response to a request from the charging pile,
And when the position information of the first charging pile is the same as that of the second charging pile and the second insulation state is an abnormal state, determining the first charging pile and the second charging pile as the abnormal state.
In one possible implementation, the charging pile status determination module is configured to, in response to a request from the charging pile,
And when the position information of the first charging pile is different from that of the second charging pile and the second insulation state is a normal state, determining the first charging pile as an abnormal state.
In one possible implementation, the apparatus further includes:
The abnormal prompt sending module is used for sending abnormal prompts to all vehicles in the area where the first charging pile is located when the first charging pile is determined to be in an abnormal state; the abnormal prompt is used for indicating that the charging abnormality exists in the area where the first charging pile is located.
In yet another aspect, a computer device is provided, the computer device including a processor and a memory, the memory storing at least one instruction, the at least one instruction being loaded and executed by the processor to implement the method of detecting a state of charge stake as described above.
In yet another aspect, a computer readable storage medium having at least one instruction stored therein is provided, the at least one instruction being loaded and executed by a processor to implement the charging pile status detection method described above.
In yet another aspect, a computer program product or computer program is provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions so that the computer device executes the charging pile state detection method.
The technical scheme provided by the application can comprise the following beneficial effects:
When the target vehicle charges in the first charging pile and the second charging pile, a first charging record and a second charging record can be respectively generated and uploaded to the cloud server, at the moment, the cloud server can analyze the first charging record and the second charging record to obtain whether the first insulating state of the target vehicle in the charging process of the first charging pile is abnormal, and when the first insulating state is abnormal, whether the insulating state of the target vehicle in the charging process of the second charging pile is abnormal is judged, so that whether the state of the first charging pile is accurately judged through the two different charging records, and each vehicle in the area where the first charging pile is located is informed, so that each vehicle can know the safety state of each charging pile more conveniently, and the potential safety hazard of the electric vehicle in charging due to the abnormal insulating state of the charging pile is reduced as much as possible.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present application, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view showing a state of charge pile detection system according to an exemplary embodiment.
Fig. 2 is a method flowchart illustrating a charging pile state detection method according to an exemplary embodiment.
Fig. 3 is a method flowchart illustrating a charging pile state detection method according to an exemplary embodiment.
Fig. 4 is a flow chart diagram illustrating a method of detecting a state of charge pile according to an exemplary embodiment.
Fig. 5 is a block diagram showing a structure of a charging pile state detecting device according to an exemplary embodiment.
Fig. 6 shows a block diagram of a computer device according to an exemplary embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the application are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.
In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, etc.
In the embodiment of the present application, the "predefining" may be implemented by pre-storing corresponding codes, tables or other manners that may be used to indicate relevant information in devices (including, for example, terminal devices and network devices), and the present application is not limited to the specific implementation manner thereof.
Fig. 1 is a schematic structural view showing a state of charge pile detection system according to an exemplary embodiment. The charging pile state detection system includes a server 110 and a target vehicle 120.
The target vehicle 120 has a data processing device and a data storage module, where the data processing device is loaded with a BMS (Battery MANAGEMENT SYSTEM), and the Battery management system may detect various parameters in the target vehicle, such as a Battery state, a vehicle body insulation resistance value, and the like, according to a specified period, and store the parameters, such as the vehicle body insulation resistance value, in the data storage module of the target vehicle.
Optionally, when the target vehicle 120 is connected to the charging pile to implement the charging process of the battery, the BMS still detects the insulation resistance value of the vehicle body in the target vehicle according to a specified period, and stores the insulation resistance value of the vehicle body of the target vehicle in the data storage module during the charging process.
The target vehicle 120 is in communication connection with the server 110 through a transmission network (such as a wireless communication network), and the target vehicle 120 can upload various data (such as a vehicle body insulation resistance value) stored in the data storage module to the server 110 through the wireless communication network, so that the server 110 can analyze the safety state of the target vehicle.
Optionally, the server 110 may also perform wireless communication connection to each new energy vehicle including the target vehicle 120 and establishing communication connection with the server 110 through a wireless communication network, and send respective corresponding indication information, such as safety prompt information, route guidance information, and the like, to each new energy vehicle.
Optionally, the server may be a server cluster or a distributed system formed by a plurality of physical servers, and may also be a cloud server that provides cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, CDNs, and technical computing services such as big data and artificial intelligence platforms.
Optionally, the system may further include a management device, where the management device is configured to manage the system (e.g., manage a connection state between each module and the server, etc.), where the management device is connected to the server through a communication network. Optionally, the communication network is a wired network or a wireless network.
Alternatively, the wireless network or wired network described above uses standard communication techniques and/or protocols. The network is typically the internet, but may be any other network including, but not limited to, a local area network, a metropolitan area network, a wide area network, a mobile, a limited or wireless network, a private network, or any combination of virtual private networks. In some embodiments, techniques and/or formats including hypertext markup language, extensible markup language, and the like are used to represent data exchanged over a network. All or some of the links may also be encrypted using conventional encryption techniques such as secure socket layer, transport layer security, virtual private network, internet protocol security, etc. In other embodiments, custom and/or dedicated data communication techniques may also be used in place of or in addition to the data communication techniques described above.
Fig. 2 is a method flowchart illustrating a charging pile state detection method according to an exemplary embodiment. The method is performed by a cloud server, which may be the server 110 in the charging pile status detection system as shown in fig. 1. As shown in fig. 2, the charging pile state detection method may include the steps of:
step 201, a first charging record and a second charging record uploaded by a target vehicle are received.
The first charging record is used for indicating the charging condition of the target vehicle on a first charging pile; the second charging record is used for indicating the charging condition of the target vehicle at a second charging pile.
When a target vehicle is charged in a first charging pile, a BMS system in the target vehicle detects the state of the target vehicle and generates a first charging record; and similarly, when the target vehicle is charged in the second charging pile, the BMS system in the target vehicle detects the state of the target vehicle and generates a second charging record.
Optionally, the first charging record includes an insulation resistance value obtained by performing insulation detection on the target vehicle by the BMS system in a charging process of the first charging pile. The second charging record contains an insulation resistance value obtained by performing insulation detection on the target vehicle by the BMS system in the charging process of the second charging pile.
Step 202, determining a first insulation state of the target vehicle when the first charging pile is charged according to the first charging record.
After the server obtains the first charging record, the first insulation state of the target vehicle when the first charging pile is charged can be determined according to the insulation resistance value of the target vehicle when the first charging pile is charged, which is indicated by the first charging record.
The first insulation state at least comprises an abnormal state and a normal state, and when the first insulation state is the abnormal state, the target vehicle can be considered to be in an unsafe state in the charging process of the first charging pile; when the first insulation state is in a normal state, the target vehicle can be considered to be in a safe state in the charging process of the first charging pile, and the probability of occurrence of electric leakage accidents is very low.
In one possible implementation manner, when the minimum value of the insulation resistance value of the target vehicle when the first charging pile is charged in the first charging record is smaller than the safety threshold value, the first insulation state is determined to be abnormal.
When the minimum value of the insulation resistance of the target vehicle during charging of the first charging pile is smaller than the safety threshold value in the first charging record, the current flowing through the vehicle body at a certain moment during charging of the target vehicle is indicated to cause harm to a human body, and the first insulation state of the target vehicle during charging of the first charging pile is determined to be an abnormal state.
Or in another possible implementation manner, when the time that the insulation resistance value of the target vehicle when the first charging pile is charged is greater than the time threshold value in the first charging record, the first insulation state is determined to be an abnormal state.
When the insulation resistance value of the target vehicle in the first charging pile is smaller than the safety threshold value and the time of the insulation resistance value is larger than the time threshold value in the first charging record, the insulation resistance value of the target vehicle is not in accordance with the safety regulation in a long time, and current which can cause harm to a human body possibly exists on the vehicle body, so that the first insulation state of the target vehicle in the first charging pile is determined to be an abnormal state.
Step 203, when the first insulation state is abnormal, determining a second insulation state of the target vehicle when the second charging pile is charged according to the second charging record.
Optionally, when the first insulation state is normal, the target vehicle does not have the condition that the insulation resistance value is too low in the charging process of the first charging pile, and at this time, the first charging pile can be considered to be in a normal state.
And when the first insulation state is abnormal, the potential safety hazard caused by the excessively low insulation resistance value of the target vehicle in the charging process of the first charging pile is indicated. Since the abnormality of the first insulating state is affected by the target vehicle in addition to the first charging pile, it is necessary to acquire the second insulating state of the target vehicle when the second charging pile is charging in order to eliminate the possibility that the abnormality of the first insulating state is caused by the target vehicle.
And 204, judging the position relation between the first charging pile and the second charging pile, and determining the state of the first charging pile according to the judging result and the second insulation state so as to inform each vehicle in the area where the first charging pile is located of the state of the first charging pile.
After the first insulating state of the target vehicle in the first charging pile and the second insulating state of the target vehicle in the second charging pile are obtained, whether the target vehicle is charged in the same charging pile or the same batch of charging piles can be judged according to the position relation between the first charging pile and the second charging pile, and whether the first charging pile is abnormal or not is determined according to the judging result.
For example, when the positional relationship between the first charging pile and the second charging pile is the same, it is indicated that the first charging pile and the second charging pile are the same charging pile or the same batch of charging piles, and when the first insulating state of the target vehicle when the first charging pile is charged and the second insulating state of the target vehicle when the second charging pile is charged are both abnormal states, it is indicated that the first charging pile and the second charging pile may have problems.
For example, when the positional relationship between the first charging pile and the second charging pile is different, it is indicated that the first charging pile and the second charging pile are not the same charging pile or the same batch of charging piles, and at this time, when the first insulating state of the target vehicle when the first charging pile is charged is abnormal, and the second insulating state of the target vehicle when the second charging pile is charged is normal, it is obvious that the first charging pile is abnormal.
For example, when the positional relationship between the first charging pile and the second charging pile is different, at this time, when the first insulation state of the target vehicle is abnormal when the first charging pile is charged, and the second insulation state of the target vehicle is also abnormal when the second charging pile is charged, the insulation resistance value may be reduced due to other reasons when the target vehicle is connected to the charging pile, that is, the target vehicle itself has a problem, the probability that both the first charging pile and the second charging pile are abnormal is small, and the first charging pile and the second charging pile are not determined to be abnormal temporarily.
In summary, when the target vehicle charges in the first charging pile and the second charging pile, the first charging record and the second charging record can be generated respectively and uploaded to the cloud server, at this time, the cloud server can analyze the first charging record and the second charging record, so as to obtain whether the first insulation state of the target vehicle in the charging process of the first charging pile is abnormal, and when the first insulation state is abnormal, whether the insulation state of the target vehicle in the charging process of the second charging pile is abnormal is judged, so that whether the state of the first charging pile is accurately judged through the two different charging records, and each vehicle in the area where the first charging pile is located is informed, so that each vehicle can know the safety state of each charging pile more conveniently, and the potential safety hazard of the electric vehicle in charging due to the insulation state abnormality of the charging pile is reduced as much as possible.
Fig. 3 is a method flowchart illustrating a charging pile state detection method according to an exemplary embodiment. The method is performed by a cloud server, which may be the server 110 in the charging pile status detection system as shown in fig. 1. As shown in fig. 3, the charging pile state detection method may include the steps of:
step 301, receiving a first charging record and a second charging record uploaded by a target vehicle.
Alternatively, the first charging record and the second charging record uploaded by the target vehicle may be two charging records of the target vehicle within a specified time, such as any two charging records within a week.
When the time difference between the first charging record and the second charging record is large, the timeliness of at least one of the first charging record and the second charging record is poor, for example, the first charging record is generated when the target vehicle is charged by the first charging pile before one week, and then the first charging record obviously cannot indicate the current charging condition of the first charging pile.
Optionally, the time stamp of the first charging record precedes the second charging record. That is, the first charging record includes a charging time of the target vehicle at the first charging post; the second charging record also includes a charging time of the target vehicle at the second charging post.
Optionally, the first charging record and the second charging record are two consecutive charging records of the target vehicle.
When the first charging record and the second charging record are two continuous charging records of the target vehicle, the first charging record and the second charging record can represent two charging processes of the target vehicle, which are separated by the nearest two charging processes, so that the comparison between the charging state of the first charging pile and the charging state of the second charging pile can be realized under the condition that the state of the target vehicle is ensured to be unchanged as much as possible.
Step 302, determining a first insulation state of the target vehicle when the first charging pile is charged according to the first charging record.
In one possible implementation manner, the first charging record includes a change condition of an insulation resistance value of the target vehicle when the first charging pile is charged; dividing the first charging record into charging intervals with target quantity, and calculating a first average insulation resistance value of each charging interval; performing linear fitting on the first average insulation resistance values of all the charging intervals to obtain a first fitting curve; and when the slope of the first fitting curve is smaller than 0 and the ratio of the minimum value to the maximum value in the first average insulation resistance is smaller than a proportional threshold, determining that the first insulation state of the target vehicle during charging of the first charging pile is an abnormal state.
When the target vehicle is charged by the first charging pile, the BMS system in the target vehicle can detect the insulation resistance value of the target vehicle at regular intervals (for example, once every ten seconds), so that the first charging record contains the insulation resistance value change condition of the target vehicle when the first charging pile is charged.
At this time, the first charging record may be divided into a target number of charging intervals according to the charging time, for example, when the first charging record indicates data generated by the target vehicle during a charging process within two hours, the server may divide the charging process for two hours into 12 ten-minute charging intervals. And for each charging interval, the server performs average processing on the insulation resistance values detected in the charging interval to obtain a first average insulation resistance value corresponding to each charging interval. The first average insulation resistance value represents the overall condition of the insulation resistance value in the charging interval.
After the first average insulation resistance value corresponding to each charging interval is obtained, the first average insulation resistance value of each charging interval can be linearly fitted according to the time sequence to obtain a first fitting curve, and at the moment, the first fitting curve can represent the change condition of the insulation resistance value of the target vehicle in the charging process indicated by the first charging record.
When the slope of the first fitting curve is smaller than 0, the insulation resistance of the target vehicle is in a descending state in the whole charging process, the insulation resistance of the target vehicle is obviously influenced by the first charging pile, and the insulation resistance is gradually reduced, so that the risk of electric leakage is provided.
When the ratio of the minimum value to the maximum value in the first average insulation resistance is smaller than the proportional threshold, the insulation resistance of the target vehicle is indicated to be reduced beyond an acceptable range in the whole charging process, the insulation resistance of the target vehicle is reduced too much, and the condition of the target vehicle when the first charging pile is charged is obviously abnormal, and the leakage risk is high, so that the first insulation condition of the target vehicle when the first charging pile is charged is abnormal.
In another possible implementation manner, when the slope of the first fitted curve is smaller than 0 and the difference between the minimum value and the maximum value in the first average insulation resistance value is larger than the drop threshold value, determining that the first insulation state of the target vehicle when the first charging pile is charged is an abnormal state.
When the difference between the minimum value and the maximum value in the first average insulation resistance is larger than the descending threshold, the insulation resistance of the target vehicle is also indicated, the descending condition in the whole charging process exceeds an acceptable range, the insulation resistance of the target vehicle is excessively reduced, the state of the target vehicle when the first charging pile is charged is obviously abnormal, and the leakage risk is high, so that the first insulation state of the target vehicle when the first charging pile is charged is an abnormal state.
Step 303, when the first insulation state is abnormal, determining a second insulation state of the target vehicle when the second charging pile is charged according to the second charging record.
In one possible implementation manner, the second charging record includes a change condition of an insulation resistance value of the target vehicle when the second charging pile is charged; dividing the second charging record into charging intervals with target quantity, and calculating a second average insulation resistance value of each charging interval; and linearly fitting the second average insulation resistance values of the charging intervals to obtain a second fitting curve.
And when the slope of the second fitting curve is smaller than 0 and the ratio of the minimum value to the maximum value in the second average insulation resistance is smaller than a proportional threshold, determining that the second insulation state of the target vehicle during charging of the second charging pile is an abnormal state.
And when the slope of the second fitting curve is larger than 0, determining that the second insulation state of the target vehicle is in a normal state when the second charging pile is charged.
And when the slope of the second fitting curve is smaller than 0 and the ratio of the minimum value to the maximum value in the second average insulation resistance is larger than a proportional threshold, determining that the second insulation state of the target vehicle during charging of the second charging pile is a normal state.
Similarly, the second charging record may be divided into a target number of charging intervals according to the charging time at this time, for example, when the second charging record indicates data generated by the target vehicle during the charging process within two hours, the server may divide the charging process for two hours into 12 ten-minute charging intervals. And for each charging interval, the server performs average processing on the insulation resistance values detected in the charging interval to obtain a second average insulation resistance value corresponding to each charging interval. The second average insulation resistance represents the overall condition of the insulation resistance in the charging section.
After the second average insulation resistance value corresponding to each charging interval is obtained, the second average insulation resistance value of each charging interval can be linearly fitted according to the time sequence to obtain a second fitting curve, and at the moment, the second fitting curve can represent the change condition of the insulation resistance value of the target vehicle in the charging process indicated by the second charging record.
When the slope of the second fitting curve is smaller than 0, the insulation resistance of the target vehicle is in a descending state in the whole charging process, the insulation resistance of the target vehicle is obviously influenced by the second charging pile, and the insulation resistance is gradually reduced, so that the risk of electric leakage is provided.
When the ratio of the minimum value to the maximum value in the second average insulation resistance is smaller than the proportional threshold, the insulation resistance of the target vehicle is indicated to be reduced beyond an acceptable range in the whole charging process, the insulation resistance of the target vehicle is reduced too much, and the condition of the target vehicle when the second charging pile is charged is obviously abnormal, and the leakage risk is high, so that the second insulation condition of the target vehicle when the second charging pile is charged is abnormal.
When the slope of the second fitting curve is greater than or equal to 0, the insulation resistance of the target vehicle is in a rising state in the whole charging process, and the insulation resistance of the target vehicle does not have a tendency of becoming smaller in the charging process, so that the target vehicle temporarily does not have a leakage risk in the second charging process.
When the slope of the second fitting curve is smaller than 0 and the ratio of the minimum value to the maximum value in the second average insulation resistance is larger than the proportional threshold, the fact that the target vehicle has a resistance falling in the charging process is indicated, the falling trend can be within an acceptance range, and the risk of electric leakage is not caused temporarily, so that the server can determine the second insulation state of the target vehicle when the second charging pile is charged as a normal state.
Optionally, the criterion for the first insulating state being in the normal state is similar to the criterion for the second insulating state being in the normal state, and will not be described here again. When the server determines that the first insulating state corresponding to the first charging record is a normal state through the first charging record, the first charging pile can be directly determined to be in a normal state or a safe state, and the server does not need to perform re-determination through the second charging record.
And 304, judging the position relation between the first charging pile and the second charging pile according to the position information recorded in the first charging record and the position information recorded in the second charging record when the insulation resistance value of the target vehicle after the first charging pile is charged is greater than the safety threshold value.
When the insulation resistance value of the target vehicle after the first charging pile is charged is larger than the safety threshold value, the condition that the insulation resistance value of the target vehicle is abnormal in the charging process of the first charging pile is indicated, and the insulation resistance value of the target vehicle is not abnormal after the charging of the first charging pile is completed, so that the condition that the insulation resistance value is too low due to the problem of the target vehicle is eliminated.
And the server can further confirm whether the insulation resistance value of the target vehicle is too low due to the first charging pile according to the second charging record of the target vehicle on the second charging pile. Before judging the state of the first charging pile according to the second insulation state in the second charging pile, the server also needs to judge the position relationship between the first charging pile and the second charging pile. Alternatively, the location information may be location information acquired by a navigation system (such as GPS) during the process of charging the first charging pile and the second charging pile, respectively, of the target vehicle.
When the geographic positions of the first charging pile and the second charging pile are the same, the first charging pile and the second charging pile are indicated to belong to the same batch of charging piles, and the positions of the first charging pile and the second charging pile can be considered to be the same. And when the address positions of the first charging pile and the second charging pile are different, the positions of the first charging pile and the second charging pile are considered to be different.
And 305, determining the state of the first charging pile according to the judging result and the second insulation state so as to inform each vehicle in the area where the first charging pile is located of the state of the first charging pile.
In one possible implementation, when the position information of the first charging pile and the second charging pile is the same and the second insulation state is an abnormal state, the first charging pile and the second charging pile are determined to be abnormal states.
When the position information of the first charging pile is the same as that of the second charging pile, the second insulation state is also an abnormal state, and at the moment, the first insulation state and the second insulation state are both abnormal states, that is, the charging pile of the target vehicle at the same position is abnormal in insulation twice, and at the moment, the server directly determines the first charging pile and the second charging pile as the abnormal states.
Optionally, because the position information of the first charging pile is the same as the position information of the second charging pile, the server may obtain the target position information of the first charging pile and the second charging pile, and determine the charging pile on the target position information as an abnormal state, thereby determining the first charging pile and the second charging pile as an abnormal state.
In an actual application environment, charging piles with the same geographic positions are usually installed and deployed in the same batch, and the specifications of the charging piles are quite possibly the same, when more than two insulating abnormal events occur in the charging piles in a certain geographic position, the server can directly determine the charging piles in the geographic position as abnormal charging piles and send a notification to each vehicle in the area where the first charging pile is located, so that the occurrence of safety accidents is avoided as much as possible.
In another possible implementation manner, when the position information of the first charging pile is different from the position information of the second charging pile and the second insulation state is a normal state, the first charging pile is determined to be an abnormal state.
When the position information of the first charging pile is different from that of the second charging pile, and the second insulation state is a normal state, at the moment, the insulation state of the target vehicle is an abnormal state when the first charging pile is charged, and the insulation state of the target vehicle when the second charging pile is charged is a normal state, which indicates that the insulation state of the target vehicle when the first charging pile is charged is not caused by the target vehicle, and the probability is more caused by the first charging pile, so that the server determines the first charging pile as the abnormal state.
In one possible implementation manner, when the first charging pile is determined to be in an abnormal state, an abnormal prompt is sent to each vehicle in the area where the first charging pile is located; the abnormal prompt is used for indicating that the charging abnormality exists in the area where the first charging pile is located.
In summary, when the target vehicle charges in the first charging pile and the second charging pile, the first charging record and the second charging record can be generated respectively and uploaded to the cloud server, at this time, the cloud server can analyze the first charging record and the second charging record, so as to obtain whether the first insulation state of the target vehicle in the charging process of the first charging pile is abnormal, and when the first insulation state is abnormal, whether the insulation state of the target vehicle in the charging process of the second charging pile is abnormal is judged, so that whether the state of the first charging pile is accurately judged through the two different charging records, and each vehicle in the area where the first charging pile is located is informed, so that each vehicle can know the safety state of each charging pile more conveniently, and the potential safety hazard of the electric vehicle in charging due to the insulation state abnormality of the charging pile is reduced as much as possible.
Fig. 4 is a flow chart diagram illustrating a method of detecting a state of charge pile according to an exemplary embodiment. As shown in fig. 4, the charging pile state detection method may include the steps of:
1) The cloud background detects the whole vehicle charging insulation data, if the insulation resistance value is abnormally changed during the gun inserting charging, the geographical charging position of the whole vehicle is recorded, and the following steps are carried out:
a) Dividing a charging period of the whole vehicle into n sections, and calculating average insulation resistance values (R1, R2, R3 … … and Rn) of each charging section (the time of each section is recommended to be 5-10 min);
b) Performing linear fitting on the average insulation resistance value of the charging interval to obtain a curve y=k x+b, if k is smaller than 0, calculating the ratio Rmin/Rmax of the minimum value and the maximum value of the average insulation resistance value, and if the ratio is lower than a threshold value, judging that the insulation is abnormal in the whole vehicle gun charging period;
2) The cloud background reads the insulation resistance value of the vehicle running data after the vehicle is charged, and if the insulation resistance value is larger than the low threshold value of the vehicle insulation resistance value in the vehicle running process, the next step is carried out;
3) The cloud background reads insulation resistance data in the next gun inserting charging period of the vehicle, and if the following conditions are met, the charging pile is judged to be abnormal:
a) The insulation resistance value is abnormal again during the charging of the vehicle gun, and the geographic position is the same as that of the last time;
b) The insulation resistance value is normal and the geographic position is different from the last time in the charging period of the vehicle gun;
4) And after the charging pile is judged to be abnormal, early warning is carried out on the users in the region, the charging pile is informed of the abnormality, and the abnormal mark is cancelled after the charging pile is repaired.
Fig. 5 is a block diagram showing a structure of a charging pile state detecting device according to an exemplary embodiment. The charging pile detection device is applied to a cloud server, which may be a server 110 in a charging pile detection system as shown in fig. 1, and the charging pile state detection device includes:
the charging record receiving module 510 is configured to receive a first charging record and a second charging record uploaded by a target vehicle; the first charging record is used for indicating the charging condition of the target vehicle on a first charging pile; the second charging record is used for indicating the charging condition of the target vehicle on a second charging pile;
a first insulation state determining module 520, configured to determine a first insulation state of the target vehicle when the first charging pile is charged according to the first charging record;
A second insulation state determining module 530, configured to determine, when the first insulation state is abnormal, a second insulation state of the target vehicle when the second charging pile is charging, according to the second charging record;
The charging pile state determining module 540 is configured to determine a positional relationship between the first charging pile and the second charging pile, and determine a state of the first charging pile according to a determination result and the second insulation state, so as to notify each vehicle in the area where the first charging pile is located of the state of the first charging pile.
In one possible implementation, the charging pile status determination module is further configured to,
And when the insulation resistance value of the target vehicle after the first charging pile is charged is greater than a safety threshold, judging the position relationship between the first charging pile and the second charging pile according to the position information recorded in the first charging record and the position information recorded in the second charging record.
In one possible implementation manner, the first charging record includes a change condition of an insulation resistance value of the target vehicle when the first charging pile is charged;
The first insulation state determining module is further configured to,
The determining, according to the first charging record, a first insulation state of the target vehicle when the first charging pile is charged, includes:
dividing the first charging record into charging intervals with target quantity, and calculating a first average insulation resistance value of each charging interval;
Performing linear fitting on the first average insulation resistance values of all the charging intervals to obtain a first fitting curve;
And when the slope of the first fitting curve is smaller than 0 and the ratio of the minimum value to the maximum value in the first average insulation resistance is smaller than a proportional threshold, determining that the first insulation state of the target vehicle when the first charging pile is charged is an abnormal state.
In one possible implementation manner, the two charging records include an insulation resistance value change condition of the target vehicle when the second charging pile is charged;
the second insulation state determining module is further configured to,
Dividing the second charging record into charging intervals with target quantity, and calculating a second average insulation resistance value of each charging interval;
Performing linear fitting on the second average insulation resistance values of all the charging intervals to obtain a second fitting curve;
When the slope of the second fitting curve is smaller than 0 and the ratio of the minimum value to the maximum value in the second average insulation resistance is smaller than a proportional threshold, determining that a second insulation state of the target vehicle when the second charging pile is charged is an abnormal state;
when the slope of the second fitting curve is larger than 0, determining that a second insulation state of the target vehicle is a normal state when a second charging pile is charged;
and when the slope of the second fitting curve is smaller than 0 and the ratio of the minimum value to the maximum value in the second average insulation resistance is larger than a proportional threshold, determining that the second insulation state of the target vehicle when the second charging pile is charged is a normal state.
In one possible implementation, the charging pile status determination module is configured to, in response to a request from the charging pile,
And when the position information of the first charging pile is the same as that of the second charging pile and the second insulation state is an abnormal state, determining the first charging pile and the second charging pile as the abnormal state.
In one possible implementation, the charging pile status determination module is configured to, in response to a request from the charging pile,
And when the position information of the first charging pile is different from that of the second charging pile and the second insulation state is a normal state, determining the first charging pile as an abnormal state.
In one possible implementation, the apparatus further includes:
The abnormal prompt sending module is used for sending abnormal prompts to all vehicles in the area where the first charging pile is located when the first charging pile is determined to be in an abnormal state; the abnormal prompt is used for indicating that the charging abnormality exists in the area where the first charging pile is located.
In summary, when the target vehicle charges in the first charging pile and the second charging pile, the first charging record and the second charging record can be generated respectively and uploaded to the cloud server, at this time, the cloud server can analyze the first charging record and the second charging record, so as to obtain whether the first insulation state of the target vehicle in the charging process of the first charging pile is abnormal, and when the first insulation state is abnormal, whether the insulation state of the target vehicle in the charging process of the second charging pile is abnormal is judged, so that whether the state of the first charging pile is accurately judged through the two different charging records, and each vehicle in the area where the first charging pile is located is informed, so that each vehicle can know the safety state of each charging pile more conveniently, and the potential safety hazard of the electric vehicle in charging due to the insulation state abnormality of the charging pile is reduced as much as possible.
Fig. 6 shows a block diagram of a computer device 600 according to an exemplary embodiment of the application. The computer device may be implemented as a server in the above-described aspects of the present application. The computer apparatus 600 includes a central processing unit (Central Processing Unit, CPU) 611, a system Memory 604 including a random access Memory (Random Access Memory, RAM) 602 and a Read-Only Memory (ROM) 603, and a system bus 605 connecting the system Memory 604 and the central processing unit 611. The computer device 600 also includes a mass storage device 606 for storing an operating system 609, application programs 160, and other program modules 611.
The mass storage device 606 is connected to the central processing unit 611 through a mass storage controller (not shown) connected to the system bus 605. The mass storage device 606 and its associated computer-readable media provide non-volatile storage for the computer device 600. That is, the mass storage device 606 may include a computer-readable medium (not shown) such as a hard disk or a compact disk-Only (CD-ROM) drive.
The computer readable medium may include computer storage media and communication media without loss of generality. Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes RAM, ROM, erasable programmable read-Only register (Erasable Programmable Read Only Memory, EPROM), electrically erasable programmable read-Only Memory (EEPROM) flash Memory or other solid state Memory technology, CD-ROM, digital versatile disks (DIGITAL VERSATILE DISC, DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices. Of course, those skilled in the art will recognize that the computer storage medium is not limited to the one described above. The system memory 604 and mass storage 606 described above may be collectively referred to as memory.
According to various embodiments of the present disclosure, the computer device 600 may also operate by being connected to a remote computer on a network, such as the Internet. I.e., the computer device 600 may be connected to the network 608 through a network interface unit 607 connected to the system bus 605, or alternatively, the network interface unit 607 may be used to connect to other types of networks or remote computer systems (not shown).
The memory further comprises at least one computer program stored in the memory, and the central processor 611 implements all or part of the steps of the methods shown in the above embodiments by executing the at least one computer program.
In an exemplary embodiment, a computer readable storage medium is also provided for storing at least one computer program that is loaded and executed by a processor to implement all or part of the steps of the above method. For example, the computer readable storage medium may be Read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), compact disc Read-Only Memory (CD-ROM), magnetic tape, floppy disk, optical data storage device, and the like.
In an exemplary embodiment, a computer program product or a computer program is also provided, the computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer readable storage medium and executes the computer instructions to cause the computer device to perform all or part of the steps of the method shown in any of the embodiments of fig. 2 or 3 described above.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (8)
1. A method for detecting a state of a charging pile, the method comprising:
Receiving a first charging record and a second charging record uploaded by a target vehicle; the first charging record is used for indicating the charging condition of the target vehicle on a first charging pile; the second charging record is used for indicating the charging condition of the target vehicle on a second charging pile;
Determining a first insulation state of the target vehicle when the first charging pile is charged according to the first charging record;
When the first insulation state is abnormal, determining a second insulation state of the target vehicle when a second charging pile is charged according to the second charging record;
judging the position relation between the first charging pile and the second charging pile, and determining the state of the first charging pile according to the judging result and the second insulation state so as to inform each vehicle in the area where the first charging pile is located of the state of the first charging pile;
and determining the state of the first charging pile according to the judging result and the second insulation state, wherein the determining comprises the following steps:
when the position information of the first charging pile is the same as that of the second charging pile and the second insulation state is an abnormal state, determining the first charging pile and the second charging pile as abnormal states;
when the position information of the first charging pile is different from that of the second charging pile and the second insulation state is a normal state, determining the first charging pile as an abnormal state;
And when the position information of the first charging pile is different from that of the second charging pile and the first insulation state and the second insulation state are abnormal states, the first charging pile and the second charging pile are not determined to be abnormal states.
2. The method of claim 1, wherein the determining the positional relationship of the first charging stake and the second charging stake comprises:
And when the insulation resistance value of the target vehicle after the first charging pile is charged is greater than a safety threshold, judging the position relationship between the first charging pile and the second charging pile according to the position information recorded in the first charging record and the position information recorded in the second charging record.
3. The method according to claim 2, wherein the first charging record includes a change in insulation resistance of the target vehicle when the first charging pile is charged;
The determining, according to the first charging record, a first insulation state of the target vehicle when the first charging pile is charged, includes:
dividing the first charging record into charging intervals with target quantity, and calculating a first average insulation resistance value of each charging interval;
Performing linear fitting on the first average insulation resistance values of all the charging intervals to obtain a first fitting curve;
And when the slope of the first fitting curve is smaller than 0 and the ratio of the minimum value to the maximum value in the first average insulation resistance is smaller than a proportional threshold, determining that the first insulation state of the target vehicle when the first charging pile is charged is an abnormal state.
4. The method according to claim 2, wherein the second charging record includes a change in insulation resistance of the target vehicle when the second charging pile is charged;
the determining, according to the second charging record, a second insulation state of the target vehicle when the second charging pile is charged, includes:
Dividing the second charging record into charging intervals with target quantity, and calculating a second average insulation resistance value of each charging interval;
Performing linear fitting on the second average insulation resistance values of all the charging intervals to obtain a second fitting curve;
When the slope of the second fitting curve is smaller than 0 and the ratio of the minimum value to the maximum value in the second average insulation resistance is smaller than a proportional threshold, determining that a second insulation state of the target vehicle when the second charging pile is charged is an abnormal state;
when the slope of the second fitting curve is larger than 0, determining that a second insulation state of the target vehicle is a normal state when a second charging pile is charged;
and when the slope of the second fitting curve is smaller than 0 and the ratio of the minimum value to the maximum value in the second average insulation resistance is larger than a proportional threshold, determining that the second insulation state of the target vehicle when the second charging pile is charged is a normal state.
5. The method according to any one of claims 1 to 4, further comprising:
when the first charging pile is determined to be in an abnormal state, an abnormal prompt is sent to each vehicle in the area where the first charging pile is located; the abnormal prompt is used for indicating that the charging abnormality exists in the area where the first charging pile is located.
6. A charging pile state detection device, characterized in that the device is applied to a cloud server, the device comprising:
The charging record receiving module is used for receiving the first charging record and the second charging record uploaded by the target vehicle; the first charging record is used for indicating the charging condition of the target vehicle on a first charging pile; the second charging record is used for indicating the charging condition of the target vehicle on a second charging pile;
the first insulation state determining module is used for determining a first insulation state of the target vehicle when the first charging pile is charged according to the first charging record;
A second insulation state determining module, configured to determine, when the first insulation state is abnormal, a second insulation state of the target vehicle when the second charging pile is charged according to the second charging record;
The charging pile state determining module is used for judging the position relation between the first charging pile and the second charging pile, and determining the state of the first charging pile according to the judging result and the second insulation state so as to inform each vehicle in the area where the first charging pile is located of the state of the first charging pile; and determining the state of the first charging pile according to the judging result and the second insulation state, wherein the determining comprises the following steps: when the position information of the first charging pile is the same as that of the second charging pile and the second insulation state is an abnormal state, determining the first charging pile and the second charging pile as abnormal states; when the position information of the first charging pile is different from that of the second charging pile and the second insulation state is a normal state, determining the first charging pile as an abnormal state; and when the position information of the first charging pile is different from that of the second charging pile and the first insulation state and the second insulation state are abnormal states, the first charging pile and the second charging pile are not determined to be abnormal states.
7. A computer device comprising a processor and a memory, the memory having stored therein at least one instruction that is loaded and executed by the processor to implement the method of charging pile status detection according to any one of claims 1 to 5.
8. A computer readable storage medium having stored therein at least one instruction that is loaded and executed by a processor to implement the method of charging stake state detection as claimed in any one of claims 1 to 5.
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| CN116215295B (en) * | 2023-03-31 | 2023-09-19 | 广东健怡投资有限公司 | Charging pile monitoring and early warning method, device, equipment and storage medium |
| CN117406007B (en) * | 2023-12-14 | 2024-02-13 | 山东佰运科技发展有限公司 | Charging pile charging data detection method and system |
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Address after: 201824 J, building 2, No. 3131, Jinshajiang Road, Jiading District, Shanghai Applicant after: Dr. Octopus Intelligent Technology (Shanghai) Co.,Ltd. Address before: 201824 J, building 2, No. 3131, Jinshajiang Road, Jiading District, Shanghai Applicant before: Honeycomb energy (Shanghai) Co.,Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |