CN113533855B - Analysis method and system for battery-changing cabinet, electronic equipment and storage medium - Google Patents
Analysis method and system for battery-changing cabinet, electronic equipment and storage medium Download PDFInfo
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- CN113533855B CN113533855B CN202110738541.4A CN202110738541A CN113533855B CN 113533855 B CN113533855 B CN 113533855B CN 202110738541 A CN202110738541 A CN 202110738541A CN 113533855 B CN113533855 B CN 113533855B
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- 238000000034 method Methods 0.000 claims description 19
- 238000012545 processing Methods 0.000 claims description 11
- 230000005856 abnormality Effects 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 10
- 238000007689 inspection Methods 0.000 abstract description 7
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/08—Measuring resistance by measuring both voltage and current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
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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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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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
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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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses a battery changing cabinet analysis method, an analysis system, electronic equipment and a storage medium. According to the analysis method for the power conversion cabinet, the first detection line and the second detection line are respectively led out from the cabinet connector and the first box connector, the voltage difference between the two detection lines is tested, the internal resistance is obtained according to the current passing through the two detection lines, the working state of the power conversion cabinet is judged according to the actual condition of the internal resistance, the problem that manual inspection cannot be found can be detected, the safety of the power conversion cabinet is ensured, the maintenance cost of the power conversion cabinet is reduced, the first quantity threshold value is preset, the internal resistance is detected for a plurality of times, the first detection internal resistance set is obtained, the working state of the power conversion cabinet can be judged correctly under the condition that false detection occurs, and the judgment accuracy is improved.
Description
Technical Field
The application relates to the technical field of traffic power supply, in particular to a battery changing cabinet analysis method, an analysis system, electronic equipment and a storage medium.
Background
With the increasing prominence of pollution and energy problems, the development of energy-saving and new energy electric vehicles is an effective way for solving the energy environmental problems. The battery changing cabinet is used as an infrastructure of energy service of the electric vehicle, can meet the increasingly-increased and flexible and independent electric energy use requirements of people, and is therefore popular with people.
The battery changing cabinet is equipment for providing rechargeable batteries for users, the appearance is similar to a storage cabinet, different battery boxes are arranged, each battery box stores a power battery pack, the cabinet is used for renting batteries by controlling the opening of the cabinet door, the box connector of each battery box is connected with the cabinet connector of the battery changing cabinet, the battery packs can be charged, the electric vehicle can use the battery changing cabinet to realize self-service battery replacement, and the electric vehicle does not need to wait for long-time charging. Because the battery pack is subjected to long-term power change operation, certain loss or other abnormal conditions occur on signal wires, charging wires and the like of the box connector and the cabinet connector, internal resistance and the like are increased, the loss cannot be effectively found during manual periodic inspection, the battery pack is slow to charge, and if serious, safety problems can be caused, and measures such as replacing cable equipment are adopted periodically, so that the problems can be solved, but good equipment is replaced, and the cost is increased.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the analysis method for the power exchange cabinet can judge the working state of the power exchange cabinet, ensures the working safety of the power exchange cabinet, and reduces the maintenance cost of the power exchange cabinet.
The application also provides a battery replacement cabinet analysis system.
The application also provides electronic equipment.
The present application also proposes a computer-readable storage medium.
According to an embodiment of the first aspect of the present application, a method for analyzing a power conversion cabinet is applied to the power conversion cabinet, where the power conversion cabinet includes:
a cabinet connector;
a first box connector;
the first detection line is connected with the cabinet connector;
the second detection line is connected with the first box connector;
the analysis method comprises the following steps:
step S100: acquiring a voltage from the first detection line to obtain a first detection voltage;
step S200: acquiring a voltage from the second detection line to obtain a second detection voltage;
step S300: acquiring current between the first detection line and the second detection line to obtain a first detection current;
step S400: obtaining a first detection internal resistance according to the first detection voltage, the second detection voltage and the first detection current;
repeating the steps S100 to S400 according to a plurality of preset time intervals of a preset first time interval to obtain a plurality of first detection internal resistances in the preset first time interval so as to obtain a first detection internal resistance set;
acquiring the number of first detected internal resistances, which are greater than or equal to a preset internal resistance threshold, in the first detected internal resistance set to obtain a first abnormal number;
and judging the working state of the power conversion cabinet according to the first abnormal quantity and a preset first abnormal quantity threshold value.
According to the analysis method for the battery changing cabinet, at least the following beneficial effects are achieved: the first detection line and the second detection line are respectively led out through the cabinet connector and the first box connector, the voltage difference between the two detection lines is tested, the internal resistance is obtained according to the current passing through the two detection lines, the working state of the power conversion cabinet is judged according to the actual condition of the internal resistance, the problem that manual inspection cannot be found can be detected, the working safety of the power conversion cabinet is ensured, and the maintenance cost of the power conversion cabinet is reduced. And through setting a preset first quantity threshold value and detecting internal resistance for a plurality of times, a first detection internal resistance set is obtained, so that the working state of the battery replacement cabinet can be accurately judged under the condition of false detection, and the judgment accuracy is improved.
According to some embodiments of the present application,
the method for analyzing the working state of the battery changing cabinet according to the first abnormal quantity and the preset first abnormal quantity threshold value comprises the following steps:
if the first abnormal quantity is smaller than the preset first abnormal quantity threshold value, the working state of the battery changing cabinet is a working normal state;
if the first abnormal quantity is larger than or equal to the preset first abnormal quantity threshold value, the working state of the battery changing cabinet is an abnormal working state;
the analysis method further comprises:
and if the working state is the working abnormal state, outputting working abnormal alarm information according to the working abnormal state.
According to some embodiments of the application, the abnormal operation state includes: a line contact failure state and a line disconnection state;
the analysis method further comprises:
and if the working state is the working abnormal state, determining that the working abnormal state is the poor line contact state or the line disconnection state according to the first detected internal resistance set, a preset difference value threshold and a preset second abnormal quantity threshold.
According to some embodiments of the present application, the determining the abnormal operation state as the line contact failure state or the line disconnection state according to the first detected internal resistance set, a preset difference threshold value, and a preset second abnormal quantity threshold value includes:
acquiring a plurality of continuous first detection internal resistances in a preset second time interval in the preset first time interval;
calculating the adjacent difference value between the first detected internal resistance and the first detected internal resistance to obtain a plurality of adjacent internal resistance difference values;
acquiring the number of the adjacent internal resistance differences larger than the preset difference threshold value to obtain a second abnormal number;
and if the second abnormal quantity is larger than or equal to the preset second abnormal quantity threshold value, the working abnormal state is the poor line contact state.
According to some embodiments of the present application, the determining, according to the first detected internal resistance set, a preset difference threshold, and a preset second abnormal quantity threshold, the abnormal operation state is the line contact failure state or the line disconnection state, further includes:
and if the second abnormal quantity is smaller than the preset second abnormal quantity threshold value, the working abnormal state is the line disconnection state.
According to some embodiments of the present application, the abnormal operation alarm information includes: poor line contact alarm information and line disconnection alarm information;
the outputting of the abnormal operation alarm information according to the abnormal operation state includes:
if the abnormal working state is the poor line contact state, outputting the poor line contact alarm information;
and if the abnormal working state is the line disconnection state, outputting the line disconnection information.
According to some embodiments of the present application, the power conversion cabinet further includes:
a second box connector;
the third detection line is connected with the second box connector;
the analysis method further comprises:
if the abnormal working state is the line disconnection state, acquiring the voltage of the third detection line to obtain a third detection voltage;
acquiring the voltage of the first detection line at the current time to obtain a fourth detection voltage;
acquiring current between the third detection line and the first detection line to obtain a second detection current;
obtaining a second detection internal resistance according to the third detection voltage, the fourth detection voltage and the second detection current;
if the second detected internal resistance is greater than or equal to the preset internal resistance threshold, the cabinet connector is in an abnormal working state;
and if the second detected internal resistance is smaller than the preset internal resistance threshold, the first box connector is in an abnormal working state.
According to a second aspect of the present application, a battery exchange cabinet analysis system is applied to a battery exchange cabinet, the battery exchange cabinet includes:
a cabinet connector;
a first box connector;
the first detection line is connected with the cabinet connector;
the second detection line is connected with the first box connector;
the analysis system includes:
the acquisition module is used for acquiring the voltage from the first detection line to obtain a first detection voltage;
the acquisition module is further used for acquiring the voltage from the second detection line so as to obtain a second detection voltage;
the acquisition module is also used for acquiring current between the first detection line and the second detection line so as to obtain a first detection current;
the calculation module is used for obtaining a first detection internal resistance according to the first detection voltage, the second detection voltage and the first detection current;
the processing module is used for repeatedly executing the processes of the acquisition module and the calculation module according to a plurality of preset time intervals of a preset first time interval to obtain a plurality of first detection internal resistances in the preset first time interval so as to obtain a first detection internal resistance set;
the processing module is further used for obtaining the number of the first detected internal resistances, which is greater than or equal to a preset internal resistance threshold, in the first detected internal resistances to obtain abnormal number;
the judging module is used for judging the working state of the battery changing cabinet according to the first abnormal quantity and a preset first abnormal quantity threshold value.
According to the battery changing cabinet analysis system, at least the following beneficial effects are achieved: the first detection line and the second detection line are respectively led out through the cabinet connector and the first box connector, the voltage difference between the two detection lines is tested, the internal resistance is obtained according to the current passing through the two detection lines, the working state of the power conversion cabinet is judged according to the actual condition of the internal resistance, the problem that manual inspection cannot be found can be detected, the working safety of the power conversion cabinet is ensured, and the maintenance cost of the power conversion cabinet is reduced. And through setting a preset first quantity threshold value and detecting internal resistance for a plurality of times, a first detection internal resistance set is obtained, so that the working state of the battery replacement cabinet can be accurately judged under the condition of false detection, and the judgment accuracy is improved.
An electronic device according to an embodiment of the third aspect of the present application includes a memory, and a processor, where the memory stores a computer program, and the processor implements the method for analyzing a power conversion cabinet according to any one of the embodiments of the first aspect when executing the computer program.
A computer-readable storage medium according to an embodiment of the fourth aspect of the present application stores computer-executable instructions for causing a computer to perform the battery cabinet analysis method according to any one of the embodiments of the first aspect.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
The application is further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic structural diagram of a power conversion cabinet provided in some embodiments of the present application;
fig. 2 is a flowchart of a method for analyzing a power conversion cabinet according to some embodiments of the present application;
fig. 3 is a flowchart of a method for analyzing a power conversion cabinet according to some embodiments of the present application;
fig. 4 is a flowchart of a method for analyzing a power conversion cabinet according to some embodiments of the present application;
fig. 5 is a flowchart of a method for analyzing a power conversion cabinet according to some embodiments of the present application;
fig. 6 is a flowchart of a method for analyzing a power conversion cabinet according to some embodiments of the present application;
fig. 7 is a flowchart of a method for analyzing a power conversion cabinet according to some embodiments of the present application;
fig. 8 is a flowchart of a method for analyzing a power conversion cabinet according to some embodiments of the present application.
Reference numerals: 100. a cabinet connector; 200. a box connector; 210. a first box connector; 220. a second box connector; 300. a first detection line; 400. a second detection line; 500. a third detection line; 600. an acquisition module; 700. a computing module; 800. a processing module; 900. and a judging module.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it should be understood that references to orientation descriptions, such as directions of up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present application, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present application can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical solution.
In the description of the present application, a description with reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a battery exchange cabinet of the present application, each battery exchange cabinet is provided with a plurality of battery boxes, each battery box is internally provided with a power battery pack, and a box connector 200 of each battery box is connected with a cabinet connector 100 of the battery exchange cabinet, so that charging of the battery packs can be achieved. However, since the battery pack is subjected to the battery replacement operation for a long period of time, the case connector 200 of the battery case and the case connector 100 of the battery replacement cabinet are subjected to the insertion and extraction operation for a long period of time, and the signal lines, the charging lines, and the like of the case connector 200 and the case connector 100 have certain loss or other abnormal conditions, increase internal resistance, and the like. The loss can not be found effectively in manual periodic inspection, the first detection line 300 and the second detection line 400 are respectively led out from the first box connector 210 and the cabinet connector 100, the voltage difference between the two detection lines is tested, the internal resistance is obtained according to the current passing through the two detection lines, the working state of the power exchange cabinet is judged according to the actual condition of the internal resistance, the working safety of the power exchange cabinet is ensured, and the maintenance cost of the power exchange cabinet is reduced.
In a first aspect, referring to fig. 1 and 2, some embodiments of the present application provide a method for analyzing a power conversion cabinet, where the power conversion cabinet includes: the cabinet connector 100, the first cabinet connector 210, the first detection line 300 and the second detection line 400, wherein the first detection line 300 is connected with the cabinet connector 100, and the second detection line 400 is connected with the first cabinet connector 210.
The battery-change-cabinet analysis method includes, but is not limited to, step S100, step S200, step S300, step S400, step S500, step S600, and step S700.
Step S100: acquiring a voltage from a first detection line to obtain a first detection voltage;
step S200: acquiring a voltage from a second detection line to obtain a second detection voltage;
step S300: acquiring current between a first detection line and a second detection line to obtain a first detection current;
step S400: obtaining a first detection internal resistance according to the first detection voltage, the second detection voltage and the first detection current;
step S500: repeating the steps S100 to S400 according to a plurality of preset time intervals of a preset first time interval to obtain a plurality of first detection internal resistances in the preset first time interval so as to obtain a first detection internal resistance set;
step S600: acquiring the number of first detected internal resistances, which are greater than or equal to a preset internal resistance threshold, in a first detected internal resistance set to obtain a first abnormal number;
step S700: and judging the working state of the battery changing cabinet according to the first abnormal quantity and a preset first abnormal quantity threshold value.
A first detection line 300 is led out on the cabinet connector 100 to detect the voltage of the cabinet connector 100 to obtain a first detection voltage, and a second detection line 400 is led out on the first cabinet connector 210 to detect the voltage of the first cabinet connector 210 to obtain a second detection voltage, and a current passing between the first detection line 300 and the second detection line 400 is obtained to obtain a first detection current. The difference between the first detection voltage and the second detection voltage is divided by the first detection current to obtain a first detection internal resistance. Repeating the steps to obtain a plurality of first detected internal resistances, wherein the plurality of first detected internal resistances are called a first detected internal resistance set. And judging the working state of the battery changing cabinet according to the number of the first detected internal resistances, namely the first abnormal number, of the first detected internal resistances which are greater than or equal to a preset internal resistance threshold value in the first detected internal resistances, and then according to the relation that the first abnormal number is greater than or equal to the preset first abnormal number threshold value.
According to the analysis method for the power exchange cabinet, the first detection line 300 and the second detection line 400 are respectively led out from the cabinet connector 100 and the first box connector 210, the voltage difference between the two detection lines is tested, the internal resistance is obtained according to the current passing through the two detection lines, the working state of the power exchange cabinet is judged according to the actual condition of the internal resistance, the problem that manual inspection cannot be found can be detected, the safety of the work of the power exchange cabinet is guaranteed, and the maintenance cost of the power exchange cabinet is reduced.
It should be noted that, the preset internal resistance threshold value and the preset first quantity threshold value are preset, and may be set according to historical data or big data.
According to the embodiment of the application, the first quantity threshold value is preset, the internal resistance is detected for a plurality of times, the first internal resistance detection set is obtained, the working state of the battery replacement cabinet can be correctly judged under the condition that false detection occurs, and the judgment accuracy is improved.
Referring to fig. 3, in some embodiments of the present application, step S700 includes, but is not limited to, step S710 and step S720.
Step S710: if the first abnormal quantity is smaller than a preset first abnormal quantity threshold value, the working state of the power conversion cabinet is a working normal state;
step S720: if the first abnormal number is greater than or equal to a preset first abnormal number threshold, the working state of the battery changing cabinet is an abnormal working state.
The battery pack analysis method further includes, but is not limited to, step S800.
Step S800: and if the working state is the abnormal working state, outputting abnormal working alarm information according to the abnormal working state.
And when the first abnormal quantity is smaller than a preset first abnormal quantity threshold value, the power conversion cabinet is in a normal working state. In this case, there is a case where the first detected internal resistance is greater than or equal to the preset internal resistance threshold, the probability of false detection is high, and it can be determined that the battery-changing cabinet is in a normal operation state. If the first abnormal number is greater than or equal to the preset first abnormal number threshold, the working state of the battery changing cabinet is the working abnormal state, and in the case, even if the situation of false detection is removed, the battery changing cabinet still has a certain number of abnormal first detection internal resistance values, the battery changing cabinet can be judged to be the working abnormal state, and working abnormal alarm information is output according to the working abnormal state so as to warn a vehicle owner or a worker.
Referring to fig. 4, in some embodiments of the present application, the abnormal operation state includes: a line contact failure state and a line disconnection state;
the analysis method further includes, but is not limited to, step S900.
Step S900: if the working state is an abnormal working state, determining that the abnormal working state is a poor line contact state or a line disconnection state according to the first detection internal resistance set, the preset difference value threshold and the preset second abnormal quantity threshold.
When the working state of the battery changing cabinet is an abnormal working state, the line contact failure state and the line disconnection state are needed to be analyzed specifically according to the first detection internal resistance set, the preset difference value threshold value and the preset second abnormal quantity threshold value.
Referring to fig. 5, in some embodiments of the present application, step S900 includes, but is not limited to, step S910, step S920, step S930, step S940, and step S950.
Step S910: acquiring a plurality of continuous first detection internal resistances in a preset second time interval in a preset first time interval;
step S920: calculating the difference value between the first detected internal resistance and the adjacent internal resistance to obtain a plurality of adjacent internal resistance difference values;
step S930: acquiring the number of the adjacent internal resistance differences larger than a preset difference threshold value to obtain a second abnormal number;
step S940: if the second abnormal quantity is larger than or equal to a preset second abnormal quantity threshold value, the working abnormal state is a poor line contact state;
step S950: if the second abnormal quantity is smaller than the preset second abnormal quantity threshold value, the working abnormal state is a line disconnection state.
When the line is disconnected, it can be considered that: the first detected internal resistance is close to infinity. When the line is in poor contact, the first detection internal resistance generally shows jumping change, namely when the line is in good contact, the first detection internal resistance is smaller than a preset internal resistance threshold value, and when the line is in poor contact, the first detection internal resistance is larger.
Obtaining a plurality of continuous first detection internal resistances in a preset second time interval in a preset first time interval, calculating the adjacent difference values of the first detection internal resistances and the first detection internal resistances to obtain a plurality of adjacent internal resistance difference values, and judging the abnormal state of the battery changing cabinet by judging the relation between the number of the adjacent internal resistance difference values larger than a preset difference value threshold value and a preset second abnormal number threshold value. If the second abnormal number is greater than or equal to a preset second abnormal number threshold, namely, the possible false detection condition is removed, the first detection internal resistance shows jumping change, and the abnormal working state can be considered as a poor line contact state. The second abnormal quantity is less, the first detected internal resistance in the first detected internal resistance set is greatly larger than the preset internal resistance threshold value, and the abnormal working state can be identified as the line disconnection state.
Through the arrangement, the abnormal state of the battery changing cabinet can be obtained through specific analysis, and convenience is provided for maintenance of staff.
Referring to fig. 6, in some embodiments of the present application, the malfunction alerting information includes: poor line contact warning information and line disconnection warning information.
The step of outputting the operation abnormality warning information according to the operation abnormality state includes, but is not limited to, step S810 and step S820.
Step S810: if the abnormal working state is a poor line contact state, outputting poor line contact alarm information;
step S820: and if the abnormal working state is a line disconnection state, outputting line disconnection information.
When the working state is an abnormal working state, the power conversion cabinet outputs abnormal working alarm information to the background server system so as to remind workers of carrying out relevant processing. The battery replacement cabinet can also output warning information through flashing of different lights or corresponding voice alarms so as to warn the car owner, and the operation is not needed, and the staff waits for processing.
Through the arrangement, the safety of the battery changing cabinet is further improved.
Referring to fig. 1 and 7, in some embodiments of the present application, the power conversion cabinet further includes: the second casing connector 220 and the third sensing line 500, the third sensing line 500 being connected to the second casing connector 220.
The analysis method further includes, but is not limited to, step S1000, step S1100, step S1200, step S1300, step S1400, and step S1500.
Step S1000: if the abnormal working state is a line disconnection state, acquiring the voltage of a third detection line to obtain a third detection voltage;
step S1100: acquiring the voltage of a first detection line at the current time to obtain a fourth detection voltage;
step S1200: acquiring current between the third detection line and the first detection line to obtain a second detection current;
step S1300: obtaining a second detection internal resistance according to the third detection voltage, the fourth detection voltage and the second detection current;
step S1400: if the second detected internal resistance is greater than or equal to a preset internal resistance threshold, the cabinet connector is in an abnormal working state;
step S1500: if the second detected internal resistance is smaller than the preset internal resistance threshold, the first box connector is in an abnormal working state.
When the abnormal operation state is a line disconnection state, the voltage of the third detection line 500 is obtained to obtain a third detection voltage, the voltage of the first detection line 300 at the current time is obtained to obtain a fourth detection voltage, the current between the third detection line 500 and the first detection line 300 is obtained to obtain a second detection current, and the second detection internal resistance is obtained according to the third detection voltage, the fourth detection voltage and the second detection current. The cabinet connector 100 is in an abnormal operation state if the second detected internal resistance is greater than or equal to the preset internal resistance threshold, and the first cabinet connector 210 is in an abnormal operation state if the second detected internal resistance is less than the preset internal resistance threshold.
When the abnormal operation state is a line disconnection state, it is necessary to determine whether a problem occurs in the cabinet connector 100 or the first cabinet connector 210. Because the case connectors 200 are provided in plurality, it is only necessary to determine the magnitude of the second detected internal resistance between the case connector 100 and the second case connector 220, whether the case connector 100 is in a problem or the first case connector 210 is in a problem may be determined, if the second detected internal resistance is greater than or equal to the preset internal resistance threshold, the case connector 100 is in an abnormal operation state, and if the second detected internal resistance is less than the preset internal resistance threshold, the first case connector 210 is in an abnormal operation state.
Through the arrangement, the reasons of abnormal work are analyzed, a certain basis is provided for the maintenance of staff, the maintenance of the staff is facilitated, meanwhile, the cabinet connector 100 and the cabinet connector 200 are not completely replaced under the condition that specific reasons are not known, and the cost is reduced.
In a second aspect, referring to fig. 1 and 8, some embodiments of the present application provide a power conversion cabinet analysis system, applied to a power conversion cabinet, the power conversion cabinet including: the cabinet connector 100, the first cabinet connector 210, the first detection line 300 and the second detection line 400, wherein the first detection line 300 is connected with the cabinet connector 100, and the second detection line 400 is connected with the first cabinet connector 210.
The battery replacement cabinet analysis system comprises: the device comprises an acquisition module 600, a calculation module 700, a processing module 800 and a judging module 900.
The acquiring module 600 is configured to acquire a voltage from the first detection line to obtain a first detection voltage; the acquisition module 600 is further configured to acquire a voltage from the second detection line to obtain a second detection voltage; the acquisition module 600 is further configured to acquire a current between the first detection line and the second detection line, so as to obtain a first detection current.
The calculation module 700 is configured to obtain a first detected internal resistance according to the first detected voltage, the second detected voltage, and the first detected current.
The processing module 800 is configured to repeatedly execute the processes of the obtaining module and the calculating module according to a plurality of preset time intervals of a preset first time interval, so as to obtain a plurality of first detected internal resistances in the preset first time interval, so as to obtain a first detected internal resistance set; the processing module 800 is further configured to obtain the number of first detected internal resistances of the first detected internal resistances set that are greater than or equal to the preset internal resistance threshold value, so as to obtain the first abnormal number.
The judging module 900 is configured to judge the working state of the power conversion cabinet according to the first abnormal number and a preset first abnormal number threshold.
A first detection line 300 is led out on the cabinet connector 100 to detect the voltage of the cabinet connector 100 to obtain a first detection voltage, and a second detection line 400 is led out on the first cabinet connector 210 to detect the voltage of the first cabinet connector 210 to obtain a second detection voltage, and a current passing between the first detection line 300 and the second detection line 400 is obtained to obtain a first detection current. The difference between the first detection voltage and the second detection voltage is divided by the first detection current to obtain a first detection internal resistance. Repeating the steps to obtain a plurality of first detected internal resistances, wherein the plurality of first detected internal resistances are called a first detected internal resistance set. Judging the working state of the battery changing cabinet according to the number of the first detected internal resistances, namely the first abnormal number, of the first detected internal resistances which are larger than or equal to a preset internal resistance threshold value in the first detected internal resistances, and judging the working state of the battery changing cabinet as the working abnormal state according to the relation that the first abnormal number is larger than or equal to the preset first abnormal number threshold value if the first abnormal number is larger than or equal to the preset first abnormal number threshold value, and outputting working abnormal alarming information according to the working abnormal state.
According to the analysis method for the power exchange cabinet, the first detection line 300 and the second detection line 400 are respectively led out from the cabinet connector 100 and the first box connector 210, the voltage difference between the two detection lines is tested, the internal resistance is obtained according to the current passing through the two detection lines, the working state of the power exchange cabinet is judged according to the actual condition of the internal resistance, the problem that manual inspection cannot be found can be detected, the safety of the work of the power exchange cabinet is guaranteed, and the maintenance cost of the power exchange cabinet is reduced. The first detection internal resistance set is obtained by setting the preset first quantity threshold and detecting the internal resistances for a plurality of times, so that the working state of the battery replacement cabinet can be correctly judged under the condition of false detection, and the judgment accuracy is improved.
The analysis process of the power conversion cabinet analysis system is similar to the aforementioned power conversion cabinet analysis method, and the specific analysis process refers to the aforementioned power conversion cabinet analysis method, and is not repeated here.
In a third aspect, an embodiment of the present application further provides an electronic device.
In some embodiments, an electronic device includes: at least one processor, and a memory communicatively coupled to the at least one processor; the memory stores instructions that are executed by the at least one processor, so that the at least one processor implements any of the power cabinet analysis methods according to the embodiments of the present application when executing the instructions.
The processor and the memory may be connected by a bus or other means.
The memory, as a non-transitory computer readable storage medium, may be used to store a non-transitory software program and a non-transitory computer executable program, such as the battery-closet analysis method described in the embodiments of the present application. The processor executes the non-transient software program and instructions stored in the memory, thereby realizing the battery-changing cabinet analysis method.
The memory may include a memory program area and a memory data area, wherein the memory program area may store an operating system, at least one application program required for a function; the storage data area can store and execute the analysis method of the battery changing cabinet. In addition, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory remotely located relative to the processor, the remote memory being connectable to the processor through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The non-transitory software programs and instructions required to implement the above-described battery pack analysis method are stored in memory and when executed by one or more processors, perform the battery pack analysis method set forth in the above-described embodiments of the first aspect.
In a fourth aspect, embodiments of the present application also provide a computer-readable storage medium.
In some embodiments, a computer-readable storage medium stores computer-executable instructions for performing the battery pack analysis method mentioned in the embodiments of the first aspect.
In some embodiments, the storage medium stores computer-executable instructions that are executed by one or more control processors, e.g., by one of the processors in the electronic device, which may cause the one or more processors to perform the battery pack analysis method.
The above described apparatus embodiments are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both 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, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
The embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present application. Furthermore, embodiments of the present application and features of the embodiments may be combined with each other without conflict.
Claims (10)
1. The analysis method of the battery exchange cabinet is characterized by being applied to the battery exchange cabinet, and the battery exchange cabinet comprises the following steps:
a cabinet connector;
a first box connector;
the first detection line is connected with the cabinet connector;
the second detection line is connected with the first box connector;
the analysis method comprises the following steps:
step S100: acquiring a voltage from the first detection line to obtain a first detection voltage;
step S200: acquiring a voltage from the second detection line to obtain a second detection voltage;
step S300: acquiring current between the first detection line and the second detection line to obtain a first detection current;
step S400: obtaining a first detection internal resistance according to the first detection voltage, the second detection voltage and the first detection current;
repeating the steps S100 to S400 according to a plurality of preset time intervals of a preset first time interval to obtain a plurality of first detection internal resistances in the preset first time interval so as to obtain a first detection internal resistance set;
acquiring the number of first detected internal resistances, which are greater than or equal to a preset internal resistance threshold, in the first detected internal resistance set to obtain a first abnormal number;
and judging the working state of the power conversion cabinet according to the first abnormal quantity and a preset first abnormal quantity threshold value.
2. The method according to claim 1, wherein the determining the working state of the power conversion cabinet according to the first abnormal number and a preset first abnormal number threshold includes:
if the first abnormal quantity is smaller than the preset first abnormal quantity threshold value, the working state of the battery changing cabinet is a working normal state;
if the first abnormal quantity is larger than or equal to the preset first abnormal quantity threshold value, the working state of the battery changing cabinet is an abnormal working state;
the analysis method further comprises:
and if the working state is the working abnormal state, outputting working abnormal alarm information according to the working abnormal state.
3. The method of analysis according to claim 2, wherein the abnormal state of operation comprises: a line contact failure state and a line disconnection state;
the analysis method further comprises:
and if the working state is the working abnormal state, determining that the working abnormal state is the poor line contact state or the line disconnection state according to the first detected internal resistance set, a preset difference value threshold and a preset second abnormal quantity threshold.
4. The analysis method according to claim 3, wherein the determining that the operation abnormality state is the line contact failure state or the line disconnection state according to the first detected internal resistance set, a preset difference threshold value, and a preset second abnormality number threshold value includes:
acquiring a plurality of continuous first detection internal resistances in a preset second time interval in the preset first time interval;
calculating the adjacent difference value between the first detected internal resistance and the first detected internal resistance to obtain a plurality of adjacent internal resistance difference values;
acquiring the number of the adjacent internal resistance differences larger than the preset difference threshold value to obtain a second abnormal number;
and if the second abnormal quantity is larger than or equal to the preset second abnormal quantity threshold value, the working abnormal state is the poor line contact state.
5. The analysis method according to claim 4, wherein the determining that the operation abnormality state is the line contact failure state or the line disconnection state according to the first detected internal resistance set, a preset difference threshold value, and a preset second abnormality number threshold value, further comprises:
and if the second abnormal quantity is smaller than the preset second abnormal quantity threshold value, the working abnormal state is the line disconnection state.
6. The analysis method according to any one of claims 3 to 5, wherein the work abnormality warning information includes: poor line contact alarm information and line disconnection alarm information;
the outputting of the abnormal operation alarm information according to the abnormal operation state includes:
if the abnormal working state is the poor line contact state, outputting the poor line contact alarm information;
and if the abnormal working state is the line disconnection state, outputting the line disconnection information.
7. The method of analysis of claim 6, wherein the power conversion cabinet further comprises:
a second box connector;
the third detection line is connected with the second box connector;
the analysis method further comprises:
if the abnormal working state is the line disconnection state, acquiring the voltage of the third detection line to obtain a third detection voltage;
acquiring the voltage of the first detection line at the current time to obtain a fourth detection voltage;
acquiring current between the third detection line and the first detection line to obtain a second detection current;
obtaining a second detection internal resistance according to the third detection voltage, the fourth detection voltage and the second detection current;
if the second detected internal resistance is greater than or equal to the preset internal resistance threshold, the cabinet connector is in an abnormal working state;
and if the second detected internal resistance is smaller than the preset internal resistance threshold, the first box connector is in an abnormal working state.
8. Trade electric cabinet analytic system, its characterized in that is applied to trade electric cabinet, trade electric cabinet and include:
a cabinet connector;
a first box connector;
the first detection line is connected with the cabinet connector;
the second detection line is connected with the first box connector;
the analysis system includes:
the acquisition module is used for acquiring the voltage from the first detection line to obtain a first detection voltage;
the acquisition module is further used for acquiring the voltage from the second detection line so as to obtain a second detection voltage;
the acquisition module is also used for acquiring current between the first detection line and the second detection line so as to obtain a first detection current;
the calculation module is used for obtaining a first detection internal resistance according to the first detection voltage, the second detection voltage and the first detection current;
the processing module is used for repeatedly executing the processes of the acquisition module and the calculation module according to a plurality of preset time intervals of a preset first time interval to obtain a plurality of first detection internal resistances in the preset first time interval so as to obtain a first detection internal resistance set;
the processing module is further used for obtaining the number of the first detected internal resistances, which is greater than or equal to a preset internal resistance threshold, in the first detected internal resistances to obtain a first abnormal number;
the judging module is used for judging the working state of the battery changing cabinet according to the first abnormal quantity and a preset first abnormal quantity threshold value.
9. An electronic device comprising a memory, a processor, the memory storing a computer program, the processor implementing the battery pack analysis method of any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium storing computer-executable instructions for causing a computer to perform the battery pack analysis method according to any one of claims 1 to 7.
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