CN115079020A - Battery failure detection method, system, device storage medium, and vehicle - Google Patents
Battery failure detection method, system, device storage medium, and vehicle Download PDFInfo
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- 238000012545 processing Methods 0.000 claims description 27
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
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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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
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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
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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Abstract
The application discloses a battery fault detection method, a system, a device storage medium and a vehicle. The method comprises the following steps: collecting the voltage value of each battery monomer to obtain a plurality of voltage values, and calculating the average value of the plurality of voltage values to obtain an average voltage value; subtracting the average voltage value from each voltage value to obtain a voltage difference value corresponding to the voltage value, and dividing the absolute value of the voltage difference value by the average voltage value to obtain a voltage deviation value corresponding to the single battery; and determining the fault detection result of the corresponding battery monomer according to the voltage deviation value. Through the application, the problems that in the related art, the inspection efficiency of the fuel cell stack is low and the inspection result is inaccurate are solved.
Description
Technical Field
The present application relates to the field of fuel cells, and more particularly, to a method, system, device storage medium, and vehicle for detecting a battery failure.
Background
With the production and popularization of electric vehicles, electric vehicles requiring the use of fuel cell stacks are increasing. The fuel cell stack is formed by stacking a plurality of bipolar plates and a membrane electrode, the cathode plate, the anode plate and the membrane electrode are a single body, air and hydrogen are subjected to oxidation-reduction reaction in flow field areas of the cathode plate and the anode plate, electrons generated by the reaction are transferred to enable the two sides of the membrane electrode to form a potential difference, and the potential difference is led out through a voltage inspection structure through the bipolar plates to form a voltage signal. In order to prevent the fuel cell from being abnormal, it is necessary to perform voltage inspection on the fuel cell stack.
In the related art, when each single fuel cell voltage in the fuel cell stack is patrolled and examined, the patrol and examine equipment used under the normal condition only collects the single voltage signal of each single cell in the stack and sends the voltage signal to the fuel cell test bench, and the abnormal reason of the abnormal single cell cannot be reflected quickly and effectively processed quickly through the collected signal. For example, when a problem occurs in a single cell, since there are many voltage collecting lines in the fuel cell stack, the abnormal cell can only be searched in the order of the voltage collecting lines, the position of the specific cell causing the problem cannot be confirmed in time, and when the test result display connected to the collecting lines is far from the fuel cell stack, the circuit is disordered and the search is difficult. In addition, the state of the display needs to be monitored in real time by manpower for the inspection of the fuel cell stack, and the abnormal condition of the voltage of the single battery can not be fed back in time, so that the inspection efficiency is low.
Aiming at the problems of low inspection efficiency and inaccurate inspection result of the fuel cell stack in the related art, no effective solution is provided at present.
Disclosure of Invention
The application provides a battery fault detection method, a system, a device storage medium and a vehicle, which aim to solve the problems that the routing inspection efficiency of a fuel cell stack is low and the routing inspection result is inaccurate in the related art.
According to one aspect of the present application, a battery fault detection method is provided. The method comprises the following steps: collecting the voltage value of each battery monomer to obtain a plurality of voltage values, and calculating the average value of the plurality of voltage values to obtain an average voltage value; subtracting the average voltage value from each voltage value to obtain a voltage difference value corresponding to the voltage value, and dividing the absolute value of the voltage difference value by the average voltage value to obtain a voltage deviation value corresponding to the single battery; and determining the fault detection result of the corresponding battery monomer according to the voltage deviation value.
Optionally, determining the fault detection result of the corresponding battery cell according to the voltage deviation value includes: comparing the voltage deviation value with a first threshold value; determining that the fault detection result of the battery cell corresponding to the voltage deviation value is abnormal when the voltage deviation value is greater than or equal to the first threshold value; and under the condition that the voltage deviation value is smaller than the first threshold value, determining that the fault detection result of the battery cell corresponding to the voltage deviation value is that the battery cell is normal.
Optionally, after determining that the fault detection result of the battery cell corresponding to the voltage deviation value is that the battery cell is abnormal, the method further includes: comparing the voltage deviation value with a second threshold value, wherein the second threshold value is greater than the first threshold value; determining that the consistency of the battery voltage of the battery monomer corresponding to the voltage deviation value is abnormal under the condition that the voltage deviation value is smaller than a second threshold value, wherein the voltage consistency abnormality represents that the voltage value of the battery monomer is different from the voltage value of a normal battery monomer; and under the condition that the voltage deviation value is greater than or equal to the second threshold value, determining that the voltage acquisition of the battery monomer corresponding to the voltage deviation value is abnormal, and acquiring the voltage value corresponding to the battery monomer again.
Optionally, after determining that the battery voltage consistency of the battery cell corresponding to the voltage deviation value is abnormal, the method further includes: obtaining the resistance value of the battery monomer to obtain a target resistance value; comparing the target resistance value with a resistance threshold value; under the condition that the target resistance value is larger than the resistance threshold value, determining that the voltage acquisition of the battery monomer corresponding to the voltage deviation value is abnormal, and acquiring the voltage value corresponding to the battery monomer again; and determining that the single battery has a fault when the target resistance value is less than or equal to the resistance threshold value.
Optionally, after acquiring the voltage value of each battery cell to obtain a plurality of voltage values, the method further includes: determining whether each voltage value is greater than a voltage threshold; under the condition that each voltage value is larger than the voltage threshold value, the step of calculating the average value of a plurality of voltage values to obtain an average voltage value is executed; and under the condition that at least one voltage value is less than or equal to the voltage threshold, the voltage values of the battery cells are collected again until all the voltage values are greater than the voltage threshold.
Optionally, after determining the fault detection result of the corresponding battery cell according to the voltage deviation value, the method further includes: determining display information corresponding to each fault detection result according to a preset display table to obtain a plurality of display information, wherein the preset display table comprises a plurality of fault detection results and the display information corresponding to each fault detection result; and displaying the fault detection result of the corresponding battery monomer according to the display information.
According to another aspect of the present application, there is provided a battery fault detection system, including: the plurality of voltage acquisition modules are connected with the processing module and are respectively used for acquiring the voltage value of one single battery, sending the acquired voltage value to the processing module, receiving the display information sent by the processing module and displaying the fault detection result of the corresponding single battery according to the display information; the processing module is used for receiving the voltage values acquired by the voltage acquisition modules, calculating the average value of the voltage values to obtain an average voltage value, calculating the deviation value between each voltage value and the average voltage value respectively to obtain the voltage deviation value corresponding to the battery cell, determining the fault detection result of the corresponding battery cell according to the voltage deviation value, and sending the display information corresponding to the fault detection result to the corresponding voltage acquisition module.
According to another aspect of the present application, a battery failure detection apparatus is provided. The device includes: the first acquisition unit is used for acquiring the voltage value of each battery monomer to obtain a plurality of voltage values, and calculating the average value of the voltage values to obtain an average voltage value; the calculating unit is used for subtracting the average voltage value from each voltage value to obtain a voltage difference value corresponding to the voltage value, and dividing the absolute value of the voltage difference value by the average voltage value to obtain a voltage deviation value corresponding to the single battery; and the first determining unit is used for determining the fault detection result of the corresponding battery cell according to the voltage deviation value.
According to another aspect of the embodiments of the present invention, there is also provided a computer storage medium for storing a program, wherein the program controls a device in which the computer storage medium is located to execute a battery failure detection method when running.
According to another aspect of the embodiments of the present invention, there is also provided a vehicle, a controller of which executes a battery failure detection method.
According to another aspect of the embodiments of the present invention, there is also provided a vehicle including a plurality of the battery cells and an electronic device, wherein the electronic device includes one or more processors and a memory; the memory has stored therein computer readable instructions, and the processor is configured to execute the computer readable instructions, wherein the computer readable instructions when executed perform a battery failure detection method.
Through the application, the following steps are adopted: collecting the voltage value of each battery monomer to obtain a plurality of voltage values, and calculating the average value of the plurality of voltage values to obtain an average voltage value; subtracting the average voltage value from each voltage value to obtain a voltage difference value corresponding to the voltage value, and respectively dividing the absolute value of the voltage difference value by the average voltage value to obtain a voltage deviation value corresponding to the single battery; and determining the fault detection result of the corresponding battery monomer according to the voltage deviation value. The problems that the routing inspection efficiency of the fuel cell stack is low and the routing inspection result is inaccurate in the related technology are solved. The voltage deviation value of the collected voltage is calculated, and whether the single battery is abnormal or not is determined according to the voltage deviation value, so that the single battery which breaks down is rapidly and effectively identified, the single battery which breaks down is timely processed, and the effect of accurately and efficiently inspecting the fuel battery stack is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
fig. 1 is a flow chart of a battery fault detection method provided according to an embodiment of the present application;
FIG. 2 is a flow chart of an alternative battery fault detection method provided in accordance with an embodiment of the present application;
FIG. 3 is a schematic diagram of a battery failure detection system provided in accordance with an embodiment of the present application;
fig. 4 is a schematic diagram of a battery failure detection apparatus provided according to an embodiment of the present application.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the relevant information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for presentation, analyzed data, etc.) referred to in the present disclosure are information and data authorized by the user or sufficiently authorized by each party. For example, an interface is provided between the system and the relevant user or institution, and before obtaining the relevant information, an obtaining request needs to be sent to the user or institution through the interface, and after receiving the consent information fed back by the user or institution, the relevant information needs to be obtained.
It should be noted that the battery failure detection method, system, device storage medium, and vehicle determined by the present disclosure may be used in the fuel cell field, and may also be used in any field other than the fuel cell field.
According to an embodiment of the present application, a battery failure detection method is provided.
Fig. 1 is a flowchart of a battery failure detection method provided according to an embodiment of the present application. As shown in fig. 1, the method comprises the steps of:
step S102, collecting the voltage value of each battery monomer to obtain a plurality of voltage values, and calculating the average value of the voltage values to obtain an average voltage value.
Specifically, the fuel cell stack is by a plurality of battery monomer combinations, when carrying out capability test to the fuel cell stack, because battery monomer is more to need test every battery monomer, so need to connect a plurality of pins of battery voltage test equipment in every battery monomer, carry out battery monomer voltage signal acquisition, and pass through the wire with the voltage signal who gathers and carry out data processing in transmitting to the testboard.
In the test bench, the average value of all the collected voltage values can be calculated, so that the average voltage value is obtained, and whether voltage abnormality exists in each battery monomer is determined according to the average voltage value.
And step S104, subtracting the average voltage value from each voltage value to obtain a voltage difference value corresponding to the voltage value, and dividing the absolute value of the voltage difference value by the average voltage value to obtain a voltage deviation value corresponding to the single battery.
Specifically, after the voltage value and the average voltage value corresponding to each battery cell are obtained, an average value of a difference value between each voltage value and the average voltage value may be calculated, and the average value is divided by the average voltage value, so as to obtain a voltage deviation value of each battery cell.
For example, the voltage value of each battery cell may be Uc, where c is 1,2 … n, and after Uc is obtained, the voltage value may be expressed by the formula
Calculating to obtain an average voltage value Ua, and then obtaining the average voltage value Ua through a formula
Calculating the voltage deviation value delta u of each battery unit c 。
And S106, determining a fault detection result of the corresponding single battery according to the voltage deviation value.
Specifically, the voltage deviation value Deltau is obtained c Then, the voltage deviation value Δ u of each battery cell can be determined according to c Whether the battery cell is abnormal or not is determined, and the abnormality is determined to be caused by poor testing or the battery cell is failed, so that the accuracy of judging the abnormality of the battery cell is improved.
According to the battery fault detection method provided by the embodiment of the application, a plurality of voltage values are obtained by collecting the voltage value of each battery cell, and the average value of the voltage values is calculated to obtain the average voltage value; subtracting the average voltage value from each voltage value to obtain a voltage difference value corresponding to the voltage value, and dividing the absolute value of the voltage difference value by the average voltage value to obtain a voltage deviation value corresponding to the single battery; and determining the fault detection result of the corresponding battery monomer according to the voltage deviation value. The problems that the routing inspection efficiency of the fuel cell stack is low and the routing inspection result is inaccurate in the related technology are solved. The voltage deviation value of the collected voltage is calculated, and whether the single battery is abnormal or not is determined according to the voltage deviation value, so that the single battery which breaks down is rapidly and effectively identified, the single battery which breaks down is timely processed, and the effect of accurately and efficiently inspecting the fuel battery stack is achieved.
In order to accurately determine whether a battery cell is abnormal, optionally, in the battery fault detection method provided in the embodiment of the present application, determining the fault detection result of the corresponding battery cell according to the voltage deviation value includes: comparing the voltage deviation value with a first threshold value; determining that the fault detection result of the battery cell corresponding to the voltage deviation value is abnormal when the voltage deviation value is greater than or equal to the first threshold value; and under the condition that the voltage deviation value is smaller than the first threshold value, determining that the fault detection result of the battery cell corresponding to the voltage deviation value is that the battery cell is normal.
Specifically, the first threshold may be a consistency threshold for determining whether the voltage values of the battery cells have consistency. When the voltage deviation value is greater than or equal to the first threshold value, it is indicated that the voltage value of the single cell corresponding to the voltage deviation value is greatly different from the voltages of the other single cells in the fuel cell stack, and the voltage consistency is not satisfied, so that the voltage deviation value needs to be processed, and the fuel cell stack can normally provide electric energy. And under the condition that the voltage deviation value is smaller than the first threshold value, the voltage difference between the voltage value of the single battery corresponding to the voltage deviation value and the voltages of the other single batteries in the fuel battery stack is smaller, and the voltage value of the single battery is not abnormal, so that the effect of accurately determining whether the single battery is abnormal is achieved.
For example, the first threshold may be Δ u uniformity In a
Is greater than or equal to Deltau u uniformity In this case, it may be determined that the voltage value of the single cell is different from the voltages of the other single cells in the fuel cell stack by a relatively large amount, and the voltage uniformity is not satisfied, and the single cell needs to be maintained, so that the voltage deviation value of the single cell is smaller than the first threshold value.
In order to further determine whether the voltage values of the battery cells that do not satisfy the consistency are accurately acquired, optionally, in the battery fault detection method provided in the embodiment of the present application, after determining that the fault detection result of the battery cell corresponding to the voltage deviation value is that the battery cell is abnormal, the method further includes: comparing the voltage deviation value with a second threshold value, wherein the second threshold value is greater than the first threshold value; determining that the consistency of the battery voltage of the battery monomer corresponding to the voltage deviation value is abnormal under the condition that the voltage deviation value is smaller than a second threshold value, wherein the voltage consistency abnormality represents that the voltage value of the battery monomer is different from the voltage value of a normal battery monomer; and under the condition that the voltage deviation value is greater than or equal to the second threshold value, determining that the voltage acquisition of the battery monomer corresponding to the voltage deviation value is abnormal, and acquiring the voltage value corresponding to the battery monomer again.
Specifically, the second threshold may be an acquisition threshold, which is used to determine whether the voltage value of the battery cell has a normal acquisition. When the voltage deviation value is larger than or equal to the second threshold value, it indicates that the voltage value of the single cell corresponding to the voltage deviation value is too large in difference with the voltages of the other single cells in the fuel cell stack, so that it indicates that the voltage value deviation is too large due to abnormality occurring during voltage value collection, and therefore whether the voltage collection equipment is in poor contact needs to be checked, and the abnormality can be determined as the abnormality of the voltage value of the single cell if the voltage collection equipment is not in poor contact.
Furthermore, under the condition that the voltage deviation value is smaller than the second threshold value, it can be determined that the voltage value collection is abnormal, and the consistency of the single battery is abnormal, so that the single battery is processed, and the effect of rapidly and accurately determining whether the single battery is abnormal is achieved.
For example, the second threshold may be Δ error, at
When the voltage value is larger than or equal to the delta error, it can be determined that the voltage value of the battery cell is abnormally collected, so that the voltage deviation value is too large, at this time, whether the voltage collection equipment is in poor contact needs to be checked, and the abnormality can be determined as the abnormality of the voltage value of the battery cell when the voltage collection equipment is not in poor contact.
After the determination from the voltage value dimension, the determination of the battery cell also needs to be made from the resistance dimension. Optionally, in the battery fault detection method provided in the embodiment of the present application, after determining that the battery voltage consistency of the battery cell corresponding to the voltage deviation value is abnormal, the method further includes: obtaining the resistance value of the battery monomer to obtain a target resistance value; comparing the target resistance value with a resistance threshold value; under the condition that the target resistance value is larger than the resistance threshold value, determining that the voltage acquisition of the battery monomer corresponding to the voltage deviation value is abnormal, and acquiring the voltage value corresponding to the battery monomer again; and determining that the single battery has a fault when the target resistance value is less than or equal to the resistance threshold value.
Specifically, the resistance threshold may be a resistance threshold set according to material characteristics of the fuel cell stack, and when the resistance value of the cell is detected to be equal to or greater than the resistance threshold, due to the abnormal resistance value, it may be determined that the voltage value is abnormal due to poor voltage uniformity caused by the abnormal resistance cell but due to a measurement cause. When the resistance value of the battery cell is detected to be smaller than the resistance threshold value, the reason that the voltage consistency of the battery cell is abnormal can be determined to be that the battery cell breaks down.
Optionally, in the battery fault detection method provided in the embodiment of the present application, after acquiring a voltage value of each battery cell to obtain a plurality of voltage values, the method further includes: determining whether each voltage value is greater than a voltage threshold; under the condition that each voltage value is larger than the voltage threshold value, the step of calculating the average value of a plurality of voltage values to obtain an average voltage value is executed; and under the condition that at least one voltage value is less than or equal to the voltage threshold, the voltage values of the battery monomers are collected again until all the voltage values are greater than the voltage threshold.
Specifically, the voltage threshold value may be 0V, when collecting the voltage value, it is necessary to determine whether the voltage value of the single battery is normally collected, when the voltage value of a certain battery is smaller than or equal to the voltage threshold value, that is, the voltage value is 0V, it is necessary to adjust the voltage collecting device first, so that the voltage collecting device can successfully collect the voltage value of each battery, calculate the average value, and improve the accuracy of determining whether the battery is abnormal.
Optionally, in the battery fault detection method provided in the embodiment of the present application, after determining the fault detection result of the corresponding battery cell according to the voltage deviation value, the method further includes: determining display information corresponding to each fault detection result according to a preset display table to obtain a plurality of display information, wherein the preset display table comprises a plurality of fault detection results and the display information corresponding to each fault detection result; and displaying the fault detection result of the corresponding battery monomer according to the display information.
It should be noted that the display information may be different colors, and each color may represent a fault detection result of the cell voltage. Specifically, after the voltage acquisition device acquires the voltage value corresponding to each battery cell, the fault detection result can be displayed by changing the color of the indicator light on the lead connected with each battery cell. For example, when the voltage value of the battery cell is detected to be 0V, the detection device is indicated to be open, and red can be displayed; when the voltage deviation value is smaller than the first threshold value, the voltage difference between the voltage value of the single battery corresponding to the voltage deviation value and the voltages of the other single batteries in the fuel battery stack is smaller, the voltage value of the single battery is not abnormal, and the voltage value can be displayed as green; under the condition that the voltage deviation value is greater than or equal to the first threshold value and greater than or equal to the second threshold value, judging that the connection of the acquisition device is abnormal, and displaying red; under the condition that the voltage deviation value is larger than or equal to a first threshold value, smaller than a second threshold value and the resistance value is larger than a resistance threshold value, determining that the acquisition device is in poor contact and displaying yellow; under the condition that the voltage deviation value is greater than or equal to the first threshold value, is less than the second threshold value and the resistance value is less than or equal to the resistance threshold value, the battery monomer is determined to be abnormal and is displayed as blue, so that inspection personnel can quickly and conveniently determine the detection result of each battery monomer, and the battery monomers are timely subjected to corresponding processing.
Fig. 2 is a flowchart of an alternative battery fault detection method provided in an embodiment of the present application. As shown in fig. 2, the voltage collecting device collects the voltage value Uc of each cell in the fuel cell stack and transmits all the voltage values to the processor, the processor determines whether each voltage value Uc is greater than 0V, displays the display device corresponding to the voltage value equal to 0V in red, calculates the average value Ua and calculates the voltage deviation value when all the voltage values are greater than 0V
Will delta u c Displaying the display device corresponding to the voltage value smaller than the first threshold value as green, and displaying the delta u c Displaying the display device corresponding to the voltage value greater than or equal to the second threshold value as red, and displaying the delta u c The display device corresponding to the voltage value which is greater than or equal to the first threshold value, less than the second threshold value and the resistance value less than the resistance threshold value is displayed as blue, and the delta u is displayed c The display device corresponding to the voltage value which is greater than or equal to the first threshold value, less than the second threshold value and the resistance value which is greater than or equal to the resistance threshold value displays yellow, so that the battery monomer with the fault is quickly and effectively identified, and the fault battery monomer is timely identifiedThe body is handled, and then has reached accurate efficient and has patrolled the effect of fuel cell stack.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
The embodiment of the present application further provides a battery fault detection system, and it should be noted that the battery fault detection system according to the embodiment of the present application may be used to execute the method for detecting a battery fault provided in the embodiment of the present application. The following describes a battery failure detection system provided in an embodiment of the present application.
FIG. 3 is a schematic diagram of a battery failure detection system according to an embodiment of the present application. As shown in fig. 3, the system includes:
the plurality of voltage acquisition modules 301 are connected to the processing module 302, and are respectively configured to acquire a voltage value of one battery cell, send the acquired voltage value to the processing module 302, receive display information sent by the processing module 302, and display a fault detection result of the corresponding battery cell according to the display information.
Specifically, each voltage acquisition module 301 may be a voltage detection wire, one end of the wire is a detection contact, and the other end of the wire is connected to the processing module 302, so as to respectively detect the voltage value of each battery cell through the plurality of voltage acquisition modules 301, and after the processing module 302 processes the voltage value, the processing result is displayed in a manner of changing the color of the wire, for example, when the voltage deviation value of the battery cell is detected to be greater than the second threshold value, it is determined that the detection contact of the voltage acquisition module 301 is abnormally connected, and the color of the wire is changed into red, so as to visually display the abnormality.
The processing module 302 is configured to receive the multiple voltage values acquired by the multiple voltage acquisition modules 301, calculate an average value of the multiple voltage values to obtain an average voltage value, calculate a deviation value between each voltage value and the average voltage value to obtain a voltage deviation value corresponding to the battery cell, determine a fault detection result of the corresponding battery cell according to the voltage deviation value, and send display information corresponding to the fault detection result to the corresponding voltage acquisition module 301.
Specifically, the processing module 302 determines whether each voltage value Uc is greater than 0V, displays the display device corresponding to the voltage value equal to 0V in red, calculates the average value Ua and calculates the voltage deviation value when all the voltage values are greater than 0V
Will delta u c The voltage acquisition module 301 corresponding to the voltage value smaller than the first threshold is displayed as green, and Δ u is displayed c The voltage acquisition module 301 corresponding to the voltage value greater than or equal to the second threshold is displayed in red, and Δ u is displayed c The voltage acquisition module 301 corresponding to the voltage value which is greater than or equal to the first threshold value, less than the second threshold value and the resistance value less than the resistance threshold value is displayed as blue, and the voltage value is displayed as delta u c The voltage acquisition module 301 corresponding to the voltage value which is greater than or equal to the first threshold value, smaller than the second threshold value and has the resistance value greater than or equal to the resistance threshold value is displayed in yellow, so that the single battery with a fault is quickly and effectively identified, the single battery with the fault is timely processed, and the effect of accurately and efficiently patrolling the fuel cell stack is achieved.
The battery fault detection system provided by the embodiment of the application is connected with the processing module 302 through the plurality of voltage acquisition modules 301, is used for acquiring the voltage value of one battery cell respectively, sends the acquired voltage value to the processing module 302, receives the display information sent by the processing module 302, and displays the corresponding fault detection result of the battery cell according to the display information. The processing module 302 is configured to receive the multiple voltage values acquired by the multiple voltage acquisition modules 301, calculate an average value of the multiple voltage values to obtain an average voltage value, calculate a deviation value between each voltage value and the average voltage value to obtain a voltage deviation value corresponding to the battery cell, determine a fault detection result of the corresponding battery cell according to the voltage deviation value, and send display information corresponding to the fault detection result to the corresponding voltage acquisition module 301. The problems that the routing inspection efficiency of the fuel cell stack is low and the routing inspection result is inaccurate in the related technology are solved. The voltage deviation value of the collected voltage is calculated, and whether the single battery is abnormal or not is determined according to the voltage deviation value, so that the single battery which breaks down is rapidly and effectively identified, the single battery which breaks down is timely processed, and the effect of accurately and efficiently inspecting the fuel battery stack is achieved.
The embodiment of the present application further provides a battery fault detection apparatus, and it should be noted that the battery fault detection apparatus according to the embodiment of the present application may be used to execute the method for detecting a battery fault provided in the embodiment of the present application. The following describes a battery failure detection apparatus provided in an embodiment of the present application.
Fig. 4 is a schematic diagram of a battery failure detection apparatus provided according to an embodiment of the present application. As shown in fig. 4, the apparatus includes: a first acquisition unit 41, a calculation unit 42, a first determination unit 43.
Specifically, the first collecting unit 41 is configured to collect a voltage value of each battery cell to obtain a plurality of voltage values, and calculate an average value of the plurality of voltage values to obtain an average voltage value.
And the calculating unit 42 is configured to subtract each voltage value from the average voltage value to obtain a voltage difference value corresponding to the voltage value, and divide the absolute value of the voltage difference value and the average voltage value to obtain a voltage deviation value corresponding to the battery cell.
And a first determining unit 43, configured to determine a fault detection result of the corresponding battery cell according to the voltage deviation value.
The battery fault detection device provided by the embodiment of the application is used for acquiring the voltage value of each battery monomer through the first acquisition unit 41 to obtain a plurality of voltage values, and calculating the average value of the plurality of voltage values to obtain an average voltage value; the calculating unit 42 is configured to subtract each voltage value from the average voltage value to obtain a voltage difference value corresponding to the voltage value, and divide the absolute value of the voltage difference value and the average voltage value to obtain a voltage deviation value corresponding to the battery cell; and a first determining unit 43, configured to determine a fault detection result of the corresponding battery cell according to the voltage deviation value. The problems that the routing inspection efficiency of the fuel cell stack is low and the routing inspection result is inaccurate in the related technology are solved. The voltage deviation value of the collected voltage is calculated, and whether the single battery is abnormal or not is determined according to the voltage deviation value, so that the single battery which breaks down is rapidly and effectively identified, the single battery which breaks down is timely processed, and the effect of accurately and efficiently inspecting the fuel battery stack is achieved.
Optionally, in the battery failure detection apparatus provided in the embodiment of the present application, the first determining unit 43 includes: the comparison module is used for comparing the voltage deviation value with a first threshold value; the first determining module is used for determining that the fault detection result of the battery cell corresponding to the voltage deviation value is abnormal when the voltage deviation value is larger than or equal to the first threshold value; and the second determining module is used for determining that the fault detection result of the battery cell corresponding to the voltage deviation value is that the battery cell is normal under the condition that the voltage deviation value is smaller than the first threshold value.
Optionally, in the battery failure detection apparatus provided in the embodiment of the present application, the apparatus further includes: the first comparison unit is used for comparing the voltage deviation value with a second threshold value, wherein the second threshold value is larger than the first threshold value; the second determining unit is used for determining that the consistency of the battery voltage of the battery monomer corresponding to the voltage deviation value is abnormal under the condition that the voltage deviation value is smaller than a second threshold value, wherein the voltage consistency abnormality represents that the voltage value of the battery monomer is different from the voltage value of a normal battery monomer; and the third determining unit is used for determining that the voltage acquisition of the single battery corresponding to the voltage deviation value is abnormal and re-acquiring the voltage value corresponding to the single battery under the condition that the voltage deviation value is greater than or equal to the second threshold value.
Optionally, in the battery failure detection apparatus provided in the embodiment of the present application, the apparatus further includes: the acquisition unit is used for acquiring the resistance value of the single battery to obtain a target resistance value; a second comparison unit for comparing the target resistance value with a resistance threshold value; the fourth determining unit is used for determining that the voltage acquisition of the battery monomer corresponding to the voltage deviation value is abnormal and re-acquiring the voltage value corresponding to the battery monomer under the condition that the target resistance value is larger than the resistance threshold value; and the fifth determining unit is used for determining that the battery cell has a fault when the target resistance value is less than or equal to the resistance threshold value.
Optionally, in the battery failure detection apparatus provided in the embodiment of the present application, the apparatus further includes: a sixth determining unit for determining whether each voltage value is greater than the voltage threshold; the execution unit is used for executing the step of calculating the average value of a plurality of voltage values to obtain the average voltage value under the condition that each voltage value is larger than the voltage threshold value; and the second acquisition unit is used for acquiring the voltage values of the battery cells again under the condition that at least one voltage value is less than or equal to the voltage threshold value until all the voltage values are greater than the voltage threshold value.
Optionally, in the battery failure detection apparatus provided in the embodiment of the present application, the apparatus further includes: a seventh determining unit, configured to determine display information corresponding to each fault detection result according to a preset display table to obtain multiple pieces of display information, where the preset display table includes multiple fault detection results and the display information corresponding to each fault detection result; and the display unit is used for displaying the fault detection result of the corresponding battery cell according to the display information.
The battery failure detection device comprises a processor and a memory, wherein the first acquisition unit 41, the calculation unit 42, the first determination unit 43 and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls the corresponding program unit from the memory. The kernel can be set to be one or more than one, and the problems that the routing inspection efficiency of the fuel cell stack is low and the routing inspection result is inaccurate in the related technology are solved by adjusting the kernel parameters.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
The embodiment of the invention provides a vehicle, which executes a battery fault detection method when a battery of the vehicle is subjected to fault detection.
An embodiment of the present invention provides a computer-readable storage medium on which a program is stored, the program implementing a battery fault detection method when executed by a processor.
The embodiment of the invention provides a processor, which is used for running a program, wherein a battery fault detection method is executed when the program runs.
The embodiment of the invention provides electronic equipment, which comprises a processor, a memory and a program which is stored on the memory and can run on the processor, wherein the processor executes the program and realizes the following steps: collecting the voltage value of each battery cell to obtain a plurality of voltage values, and calculating the average value of the plurality of voltage values to obtain an average voltage value; subtracting the average voltage value from each voltage value to obtain a voltage difference value corresponding to the voltage value, and dividing the absolute value of the voltage difference value by the average voltage value to obtain a voltage deviation value corresponding to the single battery; and determining the fault detection result of the corresponding battery monomer according to the voltage deviation value. The device herein may be a server, a PC, a PAD, a mobile phone, etc.
The present application further provides a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device: collecting the voltage value of each battery monomer to obtain a plurality of voltage values, and calculating the average value of the plurality of voltage values to obtain an average voltage value; subtracting the average voltage value from each voltage value to obtain a voltage difference value corresponding to the voltage value, and dividing the absolute value of the voltage difference value by the average voltage value to obtain a voltage deviation value corresponding to the single battery; and determining a fault detection result of the corresponding battery monomer according to the voltage deviation value.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The memory is an example of a computer-readable medium.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
It should also be noted that 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 the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A battery fault detection method, comprising:
collecting the voltage value of each battery monomer to obtain a plurality of voltage values, and calculating the average value of the voltage values to obtain an average voltage value;
subtracting the average voltage value from each voltage value to obtain a voltage difference value corresponding to the voltage value, and dividing the absolute value of the voltage difference value by the average voltage value to obtain a voltage deviation value corresponding to the single battery;
and determining a corresponding fault detection result of the battery monomer according to the voltage deviation value.
2. The method of claim 1, wherein determining the fault detection result of the corresponding battery cell according to the voltage deviation value comprises:
comparing the voltage deviation value to a first threshold;
determining that the fault detection result of the battery cell corresponding to the voltage deviation value is abnormal when the voltage deviation value is larger than or equal to the first threshold value;
and under the condition that the voltage deviation value is smaller than the first threshold value, determining that the fault detection result of the single battery corresponding to the voltage deviation value is that the single battery is normal.
3. The method according to claim 2, wherein after determining that the fault detection result of the battery cell corresponding to the voltage deviation value is that the battery cell is abnormal, the method further comprises:
comparing the voltage deviation value to a second threshold, wherein the second threshold is greater than the first threshold;
determining that the consistency of the battery voltage of the battery cell corresponding to the voltage deviation value is abnormal when the voltage deviation value is smaller than the second threshold value, wherein the abnormal voltage consistency represents that a difference exists between the voltage value of the battery cell and the voltage value of a normal battery cell;
and under the condition that the voltage deviation value is larger than or equal to the second threshold value, determining that the voltage collection of the single battery corresponding to the voltage deviation value is abnormal, and collecting the voltage value corresponding to the single battery again.
4. The method of claim 3, wherein after determining that the cell voltage consistency of the battery cell corresponding to the voltage deviation value is abnormal, the method further comprises:
obtaining the resistance value of the single battery to obtain a target resistance value;
comparing the target resistance value to a resistance threshold;
determining that the voltage acquisition of the battery monomer corresponding to the voltage deviation value is abnormal under the condition that the target resistance value is larger than the resistance threshold value, and acquiring the voltage value corresponding to the battery monomer again;
and determining that the single battery has a fault when the target resistance value is smaller than or equal to the resistance threshold value.
5. The method of claim 1, wherein after collecting the voltage value of each cell to obtain a plurality of voltage values, the method further comprises:
determining whether each of the voltage values is greater than a voltage threshold;
under the condition that each voltage value is larger than the voltage threshold value, calculating the average value of a plurality of voltage values to obtain an average voltage value;
and under the condition that at least one voltage value is smaller than or equal to the voltage threshold, the voltage values of the battery cells are collected again until all the voltage values are larger than the voltage threshold.
6. The method of claim 1, wherein after determining the fault detection result of the corresponding battery cell according to the voltage deviation value, the method further comprises:
determining display information corresponding to each fault detection result according to a preset display table to obtain a plurality of display information, wherein the preset display table comprises a plurality of fault detection results and the display information corresponding to each fault detection result;
and displaying the fault detection result of the corresponding battery monomer according to the display information.
7. A battery fault detection system, comprising:
the voltage acquisition modules are connected with the processing module and are respectively used for acquiring the voltage value of one battery cell, sending the acquired voltage value to the processing module, receiving display information sent by the processing module and displaying the corresponding fault detection result of the battery cell according to the display information;
the processing module is used for receiving a plurality of voltage values acquired by the voltage acquisition modules, calculating the average value of the voltage values to obtain an average voltage value, calculating the deviation value between each voltage value and the average voltage value respectively to obtain the voltage deviation value corresponding to the battery cell, determining the corresponding fault detection result of the battery cell according to the voltage deviation value, and sending the display information corresponding to the fault detection result to the corresponding voltage acquisition module.
8. A battery failure detection apparatus, comprising:
the first acquisition unit is used for acquiring the voltage value of each battery monomer to obtain a plurality of voltage values, and calculating the average value of the voltage values to obtain an average voltage value;
the calculating unit is used for subtracting the average voltage value from each voltage value to obtain a voltage difference value corresponding to the voltage value, and dividing the absolute value of the voltage difference value by the average voltage value to obtain a voltage deviation value corresponding to the battery cell;
and the first determining unit is used for determining the fault detection result of the corresponding battery cell according to the voltage deviation value.
9. A vehicle characterized in that a controller of the vehicle executes the battery failure detection method according to any one of claims 1 to 6.
10. A computer storage medium for storing a program, wherein the program when executed controls an apparatus in which the computer storage medium is located to perform the battery failure detection method according to any one of claims 1 to 6.
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