CN111293753A - Fault processing method and system for charging gun - Google Patents
Fault processing method and system for charging gun Download PDFInfo
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- CN111293753A CN111293753A CN202010195607.5A CN202010195607A CN111293753A CN 111293753 A CN111293753 A CN 111293753A CN 202010195607 A CN202010195607 A CN 202010195607A CN 111293753 A CN111293753 A CN 111293753A
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- 238000003672 processing method Methods 0.000 title abstract description 6
- 238000011084 recovery Methods 0.000 claims abstract description 70
- 238000000034 method Methods 0.000 claims abstract description 52
- 238000012545 processing Methods 0.000 claims description 25
- 230000005856 abnormality Effects 0.000 claims description 14
- 230000002159 abnormal effect Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a fault processing method and a system of a charging gun, wherein the method comprises the following steps: determining a fault power module and a normal power module in a charging gun according to a preset fault judgment condition; disconnecting a relay of the fault power module and controlling the normal power module to output a preset current; judging whether the fault power module is recovered to be normal or not by using a preset fault recovery condition; and if the fault power module is recovered to be normal, closing a relay of the fault power module, and controlling the normal power module and the fault power module which is switched again after recovery to output preset current. In the scheme, the fault power module and the normal power module are determined according to the fault judgment condition, the relay of the fault power module is disconnected, and the normal power module normally outputs the preset current. And when the fault power module is recovered to be normal, closing the relay of the fault power module. When the output voltage of the charging gun is abnormal, the charging process of the charging gun does not need to be completely stopped, and the charging continuity and the use experience of a user are ensured.
Description
Technical Field
The invention relates to the technical field of data processing, in particular to a fault processing method and system for a charging gun.
Background
With the development of science and technology, new energy automobiles gradually become mainstream vehicles. When the new energy automobile is charged, the charging gun may have abnormal output voltage.
At present, when the condition that the output voltage of the charging gun is abnormal is processed, the charging process of the charging gun needs to be completely stopped, the charging process can not be re-entered until the fault of the charging gun is eliminated, namely, the new energy automobile cannot be charged before the fault of the charging gun is eliminated, and the charging continuity and the use experience of a user cannot be guaranteed to be poor.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method and a system for processing a fault of a charging gun, so as to solve the problems that the charging continuity cannot be guaranteed and the user experience is poor in the current charging gun fault processing manner.
In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
the first aspect of the embodiments of the present invention provides a method for processing a fault of a charging gun, where the method includes:
determining a fault power module and a normal power module in a charging gun according to a preset fault judgment condition;
switching off a relay of the fault power module, and controlling the normal power module to output a preset current;
judging whether the fault power module is recovered to be normal or not by using a preset fault recovery condition;
and if the fault power module is recovered to be normal, closing a relay of the fault power module, and controlling the normal power module and the fault power module which is switched again after recovery to output the preset current.
Preferably, the determining the fault power module and the normal power module in the charging gun according to the preset fault judgment condition includes:
for each power module of a charging gun, if the power module meets all fault judgment conditions, determining the power module as a fault power module;
if the power module does not meet all fault judgment conditions, determining the power module to be a normal power module;
the fault judgment condition at least includes: the voltage difference value between the output voltage of the power module and the average voltage of all the power modules in the charging gun is not in a preset range; limiting the output current of the power module to 0, wherein the voltage difference value between the output voltage of the power module and the average voltage is not in a preset range within first preset time; and the fault code of the power module does not disappear within the second preset time.
Preferably, the disconnecting the relay of the fault power module and controlling the normal power module to output a preset current includes:
limiting output currents of all power modules of the charging gun to 0;
when the actual output current of the charging gun is 0, switching off a relay of the fault power module;
and controlling the normal power module to output a preset current.
Preferably, the determining whether the fault power module is recovered to normal by using a preset fault recovery condition includes:
calculating a voltage difference value between the output voltage of the fault power module and the average voltage of all power modules in the charging gun;
and if the voltage difference value between the output voltage of the fault power module and the average voltage is within a preset range and lasts for a third preset time, and if the fault code of the fault power module disappears and lasts for the third preset time, determining that the fault power module is recovered to be normal.
Preferably, the closing the relay of the fault power module, and controlling the normal power module and the fault power module switched again after recovery to output the preset current includes:
limiting output currents of all power modules of the charging gun to 0;
when the actual output current of the charging gun is 0, closing a relay of the fault power module;
and controlling the normal power module and the fault power module switched again after recovery to output the preset current.
The second aspect of the embodiment of the present invention discloses a fault handling system for a charging gun, including:
the voltage abnormity judgment unit is used for determining a fault power module and a normal power module in the charging gun according to a preset fault judgment condition;
the voltage abnormity processing unit is used for disconnecting the relay of the fault power module and controlling the normal power module to output a preset current;
the voltage abnormity restoration judging unit is used for judging whether the fault power module is restored to be normal or not by utilizing a preset fault restoration condition, and executing the voltage abnormity restoration processing unit if the fault power module is restored to be normal;
and the voltage abnormity recovery processing unit is used for closing a relay of the fault power module and controlling the normal power module and the fault power module switched again after recovery to output the preset current.
Preferably, the voltage abnormality determination unit is specifically configured to: for each power module of the charging gun, if the power module meets all fault judgment conditions, determining the power module as a fault power module, and if the power module does not meet all fault judgment conditions, determining the power module as a normal power module;
the fault judgment condition at least includes: the voltage difference value between the output voltage of the power module and the average voltage of all the power modules in the charging gun is not in a preset range; limiting the output current of the power module to 0, wherein the voltage difference value between the output voltage of the power module and the average voltage is not in a preset range within first preset time; and the fault code of the power module does not disappear within the second preset time.
Preferably, the voltage abnormality processing unit includes:
the limiting module is used for limiting the output current of all power modules of the charging gun to be 0;
the disconnection module is used for disconnecting the relay of the fault power module when the actual output current of the charging gun is 0;
and the control module is used for controlling the normal power module to output preset current.
Preferably, the voltage abnormality recovery determining unit includes:
the calculating module is used for calculating a voltage difference value between the output voltage of the fault power module and the average voltage of all power modules in the charging gun;
and the determining module is used for determining that the fault power module is recovered to be normal if the voltage difference value between the output voltage of the fault power module and the average voltage is within a preset range and lasts for a third preset time, and if the fault code of the fault power module disappears and lasts for the third preset time.
Preferably, the voltage abnormality recovery processing unit includes:
the limiting module is used for limiting the output current of all power modules of the charging gun to be 0;
the closing module is used for closing the relay of the fault power module when the actual output current of the charging gun is 0;
and the control module is used for controlling the normal power module and the fault power module which is switched again after recovery to output the preset current.
Based on the fault processing method and the fault processing system for the charging gun provided by the embodiment of the invention, the method comprises the following steps: determining a fault power module and a normal power module in a charging gun according to a preset fault judgment condition; disconnecting a relay of the fault power module and controlling the normal power module to output a preset current; judging whether the fault power module is recovered to be normal or not by using a preset fault recovery condition; and if the fault power module is recovered to be normal, closing a relay of the fault power module, and controlling the normal power module and the fault power module which is switched again after recovery to output preset current. In the scheme, the fault power module and the normal power module are determined according to the fault judgment condition, the relay of the fault power module is disconnected, and the normal power module normally outputs the preset current. And when the fault power module is determined to be recovered to be normal through the fault recovery condition, closing a relay of the fault power module, and outputting the preset current by the normal power module and the fault power module which is switched again after recovery. When rifle output voltage is unusual charging, need not stop the charging process of rifle that charges completely, guarantee the continuity of charging of rifle and improve user's use and experience.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flowchart of a method for processing a fault of a charging gun according to an embodiment of the present invention;
FIG. 2 is a flow diagram of a disconnect fault power module provided by an embodiment of the present invention;
FIG. 3 is a flow chart of a relay closing a faulty power module provided by an embodiment of the present invention;
fig. 4 is a block diagram of a fault handling system of a charging gun according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Known from the background art, when the output voltage of the charging gun is abnormal, the charging process of the charging gun needs to be completely stopped, the charging process cannot be re-entered until the fault of the charging gun is eliminated, the new energy automobile cannot be charged before the fault is eliminated, and the charging continuity and the user experience cannot be guaranteed to be poor.
Therefore, the embodiment of the invention provides a fault processing method and system for a charging gun, wherein a fault power module and a normal power module are determined according to a fault judgment condition, a relay of the fault power module is disconnected, the normal power module normally outputs a preset current, and when the fault power module is recovered to be normal, the relay of the fault power module is closed. When the output voltage of the charging gun is abnormal, the charging process of the charging gun does not need to be completely stopped, so that the charging continuity is ensured, and the user use experience is improved.
Referring to fig. 1, a flowchart of a fault handling method for a charging gun according to an embodiment of the present invention is shown, where the fault handling method includes the following steps:
step S101: and determining a fault power module and a normal power module in the charging gun according to a preset fault judgment condition.
It should be noted that the charging gun includes a plurality of power modules, for example, the charging gun includes 6 power modules. It is to be understood that the number of power modules included in different types of charging guns is not necessarily the same, and the number of power modules included in the charging gun is not particularly limited in the embodiment of the present invention.
In the process of implementing step S101 specifically, a plurality of fault determination conditions are preset, and for each power module in the charging gun, if the power module satisfies all the fault determination conditions, the power module is determined to be a faulty power module, and if the power module does not satisfy all the fault determination conditions, the power module is determined to be a normal power module.
It is understood that whether the output voltage of the charging gun is abnormal is determined by a plurality of failure determination conditions. That is, when it is determined that the faulty power module exists in the charging gun, it is determined that the output voltage of the charging gun is abnormal.
The plurality of fault determination conditions are a first fault determination condition, a second fault determination condition and a third fault determination condition, and the details of each fault determination condition are described below.
First failure determination condition: the voltage difference value between the output voltage of the power module and the average voltage of all the power modules in the charging gun is not within a preset range.
It is understood that the voltage difference between the output voltage of the power module and the average voltage is not within the preset range, the power module satisfies the first fault determination condition, for example, the voltage difference between the output voltage of the power module and the average voltage is not within the range of [ -10V, 10V ], that is, the voltage difference between the output voltage of the power module and the average voltage exceeds 10V, and the power module satisfies the first fault determination condition.
The voltage difference value between the output voltage of the power module and the average voltage is within a preset range, and the power module does not meet a first fault judgment condition.
It is understood that the average voltage refers to: average value of output voltage of all power modules in the charging gun. Alternatively, the average voltage is: and after the power modules with the output voltages smaller than the voltage threshold in the charging gun are removed, averaging the output voltages of the other power modules. For example, after the power modules with the output voltage less than 100V in the charging gun are removed, the average value of the output voltages of the other power modules is the average voltage.
The method for calculating the average voltage of all power modules in the charging gun includes, but is not limited to, the two methods mentioned above, and may also adopt other methods to calculate the average voltage, which is not limited herein.
Second failure determination conditions: and limiting the output current of the power module to be 0, wherein the voltage difference value between the output voltage of the power module and the average voltage is not in a preset range in the first preset time.
It can be understood that, when the voltage difference between the output voltage of the power module and the average voltage is not within the preset range, the output current of the power module is limited to 0, and it is determined whether the voltage difference is restored to be within the preset range within the first preset time.
It should be noted that the output current of the power module is limited to 0 by sending a message.
If the voltage difference value between the output voltage and the average voltage of the power module is not recovered to the preset range within the first preset time, the power module meets a second fault judgment condition, and if the voltage difference value between the output voltage and the average voltage of the power module is recovered to the preset range within the first preset time, the power module does not meet the second fault judgment condition.
For example: and limiting the output current of the power module to 0 if the voltage difference between the output voltage of the power module and the average voltage is not in the range of [ -10V, 10V ], and if the voltage difference is not recovered to the range of [ -10V, 10V ] within 3 seconds, the power module meets a second fault judgment condition. And if the voltage difference value is recovered to the range of [ -10V, 10V ] within 3 seconds, the power module does not meet the second fault judgment condition.
The third fault judgment condition: the fault code of the power module does not disappear within the second preset time.
It is understood that the power module satisfies the third fault determination condition when the fault code of the power module does not disappear within the second preset time, for example, when the fault code of the power module does not disappear within 3 seconds. When the fault code of the power module disappears in the second preset time, the power module does not meet the third fault judgment condition,
in one implementation, for each power module in the charging gun, if the power module simultaneously satisfies the first fault determination condition, the second fault determination condition, and the third fault determination condition, the power module is determined to be a faulty power module.
And if the power module does not simultaneously meet the first fault judgment condition, the second fault judgment condition and the third fault judgment condition, determining that the power module is a normal power module.
Through the mode, the fault power module and the normal power module in the charging gun are determined.
The contents of the first failure determination condition, the second failure determination condition, and the third failure determination condition are only for illustration. That is, the fault determination condition is not limited to the first fault determination condition, the second fault determination condition and the third fault determination condition, and the specific fault determination condition may be set according to an actual situation, and is not specifically limited herein.
Step S102: and disconnecting the relay of the fault power module and controlling the normal power module to output preset current.
In the process of implementing step S102 specifically, after the normal power module and the fault power module in the charging gun are determined, the relay of the fault power module is turned off, and the normal power module outputs the preset current normally.
That is to say, only the relay of the fault power module is switched off, and the normal power module normally outputs the preset current to continuously charge the new energy automobile.
Step S103: and judging whether the fault power module is recovered to be normal or not by utilizing a preset fault recovery condition. If the faulty power module is recovered to normal, step S104 is executed.
It should be noted that after determining the fault power module in the charging gun, the fault power module needs to be cleared, and in the process of implementing step S103 specifically, a preset fault recovery condition is used to determine whether the fault power module is recovered to normal, that is, whether the fault power module is successfully cleared.
It is understood that when the failed power module satisfies all the fault recovery conditions, it is determined that the failed power module is successfully troubleshooting.
The failure recovery condition includes a first failure recovery condition and a second failure recovery condition, and the details are described in the following.
First failure recovery condition: and calculating the voltage difference value of the output voltage of the fault power module and the average voltage of all power modules in the charging gun. And if the voltage difference value between the output voltage of the fault power module and the average voltage is within the preset range and lasts for a third preset time, the fault power module meets a first fault recovery condition.
For example, the voltage difference between the output voltage of the fault power module and the average voltage is in the range of [ -10V, 10V ] and lasts for more than 5 seconds, and the fault power module meets the first fault recovery condition.
The calculation method of the average voltage can be referred to the content of step S101.
The second failure recovery condition: if the fault code of the fault power module disappears and lasts for a third preset time, that is, the fault code of the fault power module disappears and does not appear within the third preset time, the fault power module meets a second fault recovery condition.
For example, the fault code of the fault power module disappears and does not appear within 5S, and the fault power module satisfies the second fault recovery condition.
In one implementation, if the failed power module satisfies the first failure recovery condition and the second failure recovery condition at the same time, it is determined that the failed power module is successfully troubleshooting.
It should be noted that the above-mentioned first failure recovery condition and the second failure recovery condition are only used for illustration. That is, the fault recovery condition is not limited to the first fault recovery condition and the second fault recovery condition, and the specific fault recovery condition may be set according to an actual situation, and is not specifically limited herein.
Step S104: and closing a relay of the fault power module, and controlling the normal power module and the fault power module switched again after recovery to output preset current.
In the process of implementing step S104, after the fault power module is determined to be restored to normal, that is, after the fault power module is determined to be successfully cleared, the relay of the fault power module restored to normal is closed, so that the normal power module and the fault power module switched again after restoration output the preset current.
Switching again after recovery means that: and after the fault power module is recovered to be normal, the relay of the fault power module is closed again.
In the embodiment of the invention, the fault power module and the normal power module in the charging gun are determined according to the fault judgment condition. And (4) switching off a relay of the fault power module, and normally outputting a preset current by the normal power module. And when the fault power module is determined to be recovered to be normal through the fault recovery condition, closing a relay of the fault power module, and outputting the preset current by the normal power module and the fault power module which is switched again after recovery. When the output voltage of the charging gun is abnormal, the charging process of the charging gun does not need to be completely stopped, so that the charging continuity of the charging gun is ensured, and the use experience of a user is improved.
The process of turning off the faulty power module related to step S102 in fig. 1 in the above embodiment of the present invention, referring to fig. 2, shows a flowchart of turning off the faulty power module provided in the embodiment of the present invention, including the following steps:
step S201: the output currents of all power modules of the charging gun are limited to 0.
In the process of implementing step S201 specifically, the output current of each power module in the charging gun is limited to 0 by sending a message.
Step S202: and when the actual output current of the charging gun is 0, the relay of the fault power module is disconnected.
In the process of specifically implementing step S202, after the output current of each power module in the charging gun is limited to 0, the relay of the faulty power module is turned off after the actual output current of the charging gun is reduced to 0.
Step S203: and controlling the normal power module to output a preset current.
After the relay of the fault power module is disconnected in the step S203, the normal power module is enabled to recover to output the preset current, and the new energy automobile is continuously charged.
In the embodiment of the invention, the output current of each power module in the charging gun is limited to 0, and after the actual output current of the charging gun is reduced to 0, the relay of the fault power module is disconnected, so that the normal power module can recover to output the preset current without completely stopping the charging process of the charging gun, thereby ensuring the charging continuity of the charging gun and improving the use experience of a user.
The process of closing the relay of the faulty power module related to step S104 in fig. 1 in the above embodiment of the present invention, referring to fig. 3, shows a flowchart of closing the relay of the faulty power module provided in the embodiment of the present invention, including the following steps:
step S301: the output currents of all power modules of the charging gun are limited to 0.
Step S302: and when the actual output current of the charging gun is 0, closing the relay of the fault power module.
In the process of specifically implementing step S302, after the output current of each power module in the charging gun is limited to 0, after the actual output current of the charging gun is reduced to 0, the relay of the faulty power module is closed.
Step S303: and controlling the normal power module and the fault power module switched again after recovery to output preset current.
In the process of specifically implementing the step S303, after the relay of the fault power module is closed, the normal power module and the fault power module which is switched again after recovery are enabled to recover to output the preset current, so as to charge the new energy automobile.
In the embodiment of the invention, after the fault power module is recovered to be normal, the output current of each power module in the charging gun is limited to 0, after the actual output current of the charging gun is reduced to 0, the relay of the fault power module is closed, so that the normal power module and the fault power module switched again after recovery recover to output the preset current, the charging continuity of the charging gun is ensured and the use experience of a user is improved under the condition that the charging process of the charging gun is not required to be completely stopped.
Corresponding to the method for processing the fault of the charging gun provided by the embodiment of the present invention, referring to fig. 4, the embodiment of the present invention further provides a structural block diagram of a fault processing system of the charging gun, where the fault processing system includes: a voltage abnormality determination unit 401, a voltage abnormality processing unit 402, a voltage abnormality recovery determination unit 403, and a voltage abnormality recovery processing unit 404;
and a voltage abnormality determining unit 401, configured to determine a fault power module and a normal power module in the charging gun according to a preset fault determination condition.
In a specific implementation, the voltage abnormality determining unit 401 is specifically configured to: and aiming at each power module of the charging gun, if the power module meets all fault judgment conditions, determining the power module as a fault power module, and if the power module does not meet all fault judgment conditions, determining the power module as a normal power module.
The fault judgment condition at least includes: the voltage difference value between the output voltage of the power module and the average voltage of all the power modules in the charging gun is not in a preset range; limiting the output current of the power module to 0, wherein the voltage difference value between the output voltage and the average voltage of the power module is not in a preset range within first preset time; and the fault code of the power module does not disappear within the second preset time.
And the voltage abnormity processing unit 402 is used for disconnecting the relay of the fault power module and controlling the normal power module to output preset current.
And a voltage abnormal recovery determining unit 403, configured to determine whether the faulty power module recovers to normal by using a preset fault recovery condition, and if the faulty power module recovers to normal, execute the voltage abnormal recovery processing unit 404.
And the voltage abnormity recovery processing unit 404 is used for closing a relay of the fault power module, and controlling the normal power module and the fault power module switched again after recovery to output preset current.
In the embodiment of the invention, the fault power module and the normal power module in the charging gun are determined according to the fault judgment condition. And (4) switching off a relay of the fault power module, and normally outputting a preset current by the normal power module. And when the fault power module is determined to be recovered to be normal through the fault recovery condition, closing a relay of the fault power module, and outputting the preset current by the normal power module and the fault power module which is switched again after recovery. When the output voltage of the charging gun is abnormal, the charging process of the charging gun does not need to be completely stopped, so that the charging continuity of the charging gun is ensured, and the use experience of a user is improved.
Preferably, in conjunction with the content of fig. 4, the voltage exception handling unit 402 includes: the device comprises a limiting module, a disconnection module and a control module, wherein the execution principle of each module is as follows:
and the limiting module is used for limiting the output current of all the power modules of the charging gun to 0.
And the disconnection module is used for disconnecting the relay of the fault power module when the actual output current of the charging gun is 0.
And the control module is used for controlling the normal power module to output preset current.
In the embodiment of the invention, the output current of each power module in the charging gun is limited to 0, and after the actual output current of the charging gun is reduced to 0, the relay of the fault power module is disconnected, so that the normal power module can recover to output the preset current without completely stopping the charging process of the charging gun, thereby ensuring the charging continuity of the charging gun and improving the use experience of a user.
Preferably, in conjunction with the content in fig. 4, the voltage abnormality recovery processing unit 404 includes: the device comprises a limiting module, a closing module and a control module, wherein the execution principle of each module is as follows:
and the limiting module is used for limiting the output current of all the power modules of the charging gun to 0.
And the closing module is used for closing the relay of the fault power module when the actual output current of the charging gun is 0.
And the control module is used for controlling the normal power module and the fault power module switched again after recovery to output preset current.
In the embodiment of the invention, after the fault power module is recovered to be normal, the output current of each power module in the charging gun is limited to 0, after the actual output current of the charging gun is reduced to 0, the relay of the fault power module is closed, so that the normal power module and the fault power module switched again after recovery recover to output the preset current, the charging continuity of the charging gun is ensured and the use experience of a user is improved under the condition that the charging process of the charging gun is not required to be completely stopped.
Preferably, in combination with the content in fig. 4, the voltage abnormality recovery determining unit 403 includes: the device comprises a calculation module and a determination module, wherein the execution principle of each module is as follows:
and the calculating module is used for calculating the voltage difference value between the output voltage of the fault power module and the average voltage of all the power modules in the charging gun.
And the determining module is used for determining that the fault power module is recovered to be normal if the voltage difference value between the output voltage of the fault power module and the average voltage is within the preset range and lasts for a third preset time, and if the fault code of the fault power module disappears and lasts for the third preset time.
In summary, the embodiments of the present invention provide a method and a system for processing a fault of a charging gun, where the method includes: determining a fault power module and a normal power module in a charging gun according to a preset fault judgment condition; disconnecting a relay of the fault power module and controlling the normal power module to output a preset current; judging whether the fault power module is recovered to be normal or not by using a preset fault recovery condition; and if the fault power module is recovered to be normal, closing a relay of the fault power module, and controlling the normal power module and the fault power module which is switched again after recovery to output preset current. In the scheme, the fault power module and the normal power module are determined according to the fault judgment condition, the relay of the fault power module is disconnected, and the normal power module normally outputs the preset current. And when the fault power module is determined to be recovered to be normal through the fault recovery condition, closing a relay of the fault power module, and outputting the preset current by the normal power module and the fault power module which is switched again after recovery. When rifle output voltage is unusual charging, need not stop the charging process of rifle that charges completely, guarantee the continuity of charging of rifle and improve user's use and experience.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the system or system embodiments are substantially similar to the method embodiments and therefore are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described system and system embodiments are only illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method of fault handling for a charging gun, the method comprising:
determining a fault power module and a normal power module in a charging gun according to a preset fault judgment condition;
switching off a relay of the fault power module, and controlling the normal power module to output a preset current;
judging whether the fault power module is recovered to be normal or not by using a preset fault recovery condition;
and if the fault power module is recovered to be normal, closing a relay of the fault power module, and controlling the normal power module and the fault power module which is switched again after recovery to output the preset current.
2. The method of claim 1, wherein the determining the fault power module and the normal power module in the charging gun according to the preset fault judgment condition comprises:
for each power module of a charging gun, if the power module meets all fault judgment conditions, determining the power module as a fault power module;
if the power module does not meet all fault judgment conditions, determining the power module to be a normal power module;
the fault judgment condition at least includes: the voltage difference value between the output voltage of the power module and the average voltage of all the power modules in the charging gun is not in a preset range; limiting the output current of the power module to 0, wherein the voltage difference value between the output voltage of the power module and the average voltage is not in a preset range within first preset time; and the fault code of the power module does not disappear within the second preset time.
3. The method of claim 1, wherein the opening the relay of the fault power module and controlling the normal power module to output a preset current comprises:
limiting output currents of all power modules of the charging gun to 0;
when the actual output current of the charging gun is 0, switching off a relay of the fault power module;
and controlling the normal power module to output a preset current.
4. The method of claim 1, wherein the determining whether the faulty power module is recovered to normal by using a preset fault recovery condition comprises:
calculating a voltage difference value between the output voltage of the fault power module and the average voltage of all power modules in the charging gun;
and if the voltage difference value between the output voltage of the fault power module and the average voltage is within a preset range and lasts for a third preset time, and if the fault code of the fault power module disappears and lasts for the third preset time, determining that the fault power module is recovered to be normal.
5. The method of claim 1, wherein the closing the relay of the fault power module, controlling the normal power module and the fault power module re-switched after recovery to output the preset current comprises:
limiting output currents of all power modules of the charging gun to 0;
when the actual output current of the charging gun is 0, closing a relay of the fault power module;
and controlling the normal power module and the fault power module switched again after recovery to output the preset current.
6. A fault handling system for a charging gun, the system comprising:
the voltage abnormity judgment unit is used for determining a fault power module and a normal power module in the charging gun according to a preset fault judgment condition;
the voltage abnormity processing unit is used for disconnecting the relay of the fault power module and controlling the normal power module to output a preset current;
the voltage abnormity restoration judging unit is used for judging whether the fault power module is restored to be normal or not by utilizing a preset fault restoration condition, and executing the voltage abnormity restoration processing unit if the fault power module is restored to be normal;
and the voltage abnormity recovery processing unit is used for closing a relay of the fault power module and controlling the normal power module and the fault power module switched again after recovery to output the preset current.
7. The system according to claim 6, wherein the voltage abnormality determination unit is specifically configured to: for each power module of the charging gun, if the power module meets all fault judgment conditions, determining the power module as a fault power module, and if the power module does not meet all fault judgment conditions, determining the power module as a normal power module;
the fault judgment condition at least includes: the voltage difference value between the output voltage of the power module and the average voltage of all the power modules in the charging gun is not in a preset range; limiting the output current of the power module to 0, wherein the voltage difference value between the output voltage of the power module and the average voltage is not in a preset range within first preset time; and the fault code of the power module does not disappear within the second preset time.
8. The system of claim 6, wherein the voltage exception handling unit comprises:
the limiting module is used for limiting the output current of all power modules of the charging gun to be 0;
the disconnection module is used for disconnecting the relay of the fault power module when the actual output current of the charging gun is 0;
and the control module is used for controlling the normal power module to output preset current.
9. The system according to claim 6, wherein the voltage abnormality recovery determination unit includes:
the calculating module is used for calculating a voltage difference value between the output voltage of the fault power module and the average voltage of all power modules in the charging gun;
and the determining module is used for determining that the fault power module is recovered to be normal if the voltage difference value between the output voltage of the fault power module and the average voltage is within a preset range and lasts for a third preset time, and if the fault code of the fault power module disappears and lasts for the third preset time.
10. The system of claim 6, wherein the voltage exception recovery processing unit comprises:
the limiting module is used for limiting the output current of all power modules of the charging gun to be 0;
the closing module is used for closing the relay of the fault power module when the actual output current of the charging gun is 0;
and the control module is used for controlling the normal power module and the fault power module which is switched again after recovery to output the preset current.
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