CN115327400A - Lithium analysis detection device and method for lithium battery and module - Google Patents
Lithium analysis detection device and method for lithium battery and module Download PDFInfo
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- CN115327400A CN115327400A CN202111301267.0A CN202111301267A CN115327400A CN 115327400 A CN115327400 A CN 115327400A CN 202111301267 A CN202111301267 A CN 202111301267A CN 115327400 A CN115327400 A CN 115327400A
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 241
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 241
- 238000004458 analytical method Methods 0.000 title claims abstract description 126
- 238000001514 detection method Methods 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000004891 communication Methods 0.000 claims description 18
- 239000003792 electrolyte Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 description 60
- 239000001257 hydrogen Substances 0.000 description 18
- 229910052739 hydrogen Inorganic materials 0.000 description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 17
- 210000004027 cell Anatomy 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application discloses lithium battery and module analyse lithium detection device and method, wherein, the lithium battery analyse lithium detection device includes: the system comprises a detection module, a battery management system and an early warning module, wherein the detection module is used for detecting the state of a battery; the detection module is used for detecting the concentration of the specific gas in real time and providing the detected concentration of the specific gas to the battery management system; the battery management system is connected with the detection module and the early warning module and used for obtaining a lithium analysis threshold level according to the specific gas concentration, judging whether the lithium analysis threshold level reaches the lithium analysis early warning level, and if the judgment result shows that the lithium analysis early warning level is reached, generating early warning information and sending the early warning information to the early warning module for early warning prompt. The method and the device can accurately detect whether the lithium battery separates lithium.
Description
Technical Field
The application relates to the technical field of battery management, in particular to a lithium analysis detection device and method for a lithium battery and a module.
Background
With the vigorous development of new energy markets, safety problems of new energy products such as electric automobiles, electric motorcycles and the like are increasingly and widely concerned by people, and safety of the new energy products is mainly focused on safety of lithium batteries. In the safety of lithium batteries, lithium precipitation of lithium batteries is a considerable cause of thermal runaway of lithium batteries. Lithium precipitation from lithium batteries will lead to reduced thermal stability and will lead to irreversible thermal safety events when lithium dendrites caused by the lithium precipitation pierce the separator causing internal short circuits.
At present, a lithium analysis detection method for a lithium battery mainly performs lithium analysis judgment according to the difference between capacity, internal resistance, standing voltage and pressure before and after lithium analysis. The method has a large requirement on the lithium deposition amount, and when the lithium deposition amount is small, the difference is difficult to judge due to equipment precision and the like, so that the existing judging method is difficult to put into use on new energy products.
The foregoing description is provided for general background information and is not admitted to be prior art.
Disclosure of Invention
The application aims to provide a lithium analysis detection device and method for a lithium battery and a module, which can accurately detect whether the lithium battery analyzes lithium.
In order to achieve the purpose, the technical scheme of the application is realized as follows:
in a first aspect, an embodiment of the present application provides a lithium analysis detection apparatus for a lithium battery, including: the system comprises a detection module, a battery management system and an early warning module, wherein the detection module is used for detecting the state of a battery;
the detection module is used for detecting the concentration of the specific gas in real time and providing the detected concentration of the specific gas to the battery management system;
the battery management system is connected with the detection module and the early warning module and used for obtaining a lithium analysis threshold level according to the specific gas concentration, judging whether the lithium analysis threshold level reaches the lithium analysis early warning level, and if the judgment result shows that the lithium analysis early warning level is reached, generating early warning information and sending the early warning information to the early warning module for early warning prompt.
In one embodiment, the detection module is disposed inside a lithium battery between a negative electrode of the lithium battery and a separator that separates an electrolyte from the negative electrode of the lithium battery.
In one embodiment, the detection module is a gas sensor, and the early warning module is a combination meter of a vehicle.
As one embodiment, the battery management system comprises a slave board and a master board connected with the slave board, wherein the slave board is used for sending the specific gas concentration provided by the detection module to the master board, the master board is used for obtaining a lithium analysis threshold level according to the specific gas concentration, judging whether the lithium analysis threshold level reaches the lithium analysis early warning level, and if the judgment result is that the lithium analysis early warning level is reached, generating early warning information and sending the early warning information to the early warning module for early warning prompt.
As one implementation mode, the system further comprises a remote communication module and a server which are connected with the battery management system, wherein the battery management system is further used for providing early warning information to the server through the remote communication module, and the server analyzes and processes the early warning information; the server is also used for contacting the user terminal according to the early warning information provided by the remote communication module to prompt the user, or contacting the vehicle rescue group and the emergency accident group to process the vehicle fault.
As one implementation mode, the vehicle control system further comprises a vehicle control unit connected with the battery management system, wherein the battery management system is further used for sending the early warning information to the vehicle control unit, and the vehicle control unit is used for controlling the vehicle to reduce the speed according to the early warning information.
In a second aspect, an embodiment of the present application provides a lithium analysis detection device for a lithium battery module, including: lithium battery analyse lithium detection device, a lithium battery module include a plurality of lithium batteries, and detection module corresponds and sets up a plurality ofly, and every detection module sets up inside a lithium battery, and every detection module is used for the specific gas concentration of real-time detection to provide the specific gas concentration that detects battery management system, battery management system with detection module with early warning module links to each other for obtain analysing lithium threshold value grade according to specific gas concentration, judge analyse lithium threshold value grade and whether reach and analyse lithium early warning grade, if the judged result for reacing and analyse lithium early warning grade, then generate the early warning information after send for early warning module carries out the early warning suggestion.
In a third aspect, an embodiment of the present application provides a lithium analysis detection method for a lithium battery, including: the detection module detects the concentration of the specific gas in real time and provides the detected concentration of the specific gas to the battery management system;
the battery management system obtains a lithium analysis threshold level according to the specific gas concentration, judges whether the lithium analysis threshold level reaches a lithium analysis early warning level, and generates early warning information and sends the early warning information to an early warning module for early warning prompt if the judgment result shows that the lithium analysis early warning level is reached.
The technical scheme provided by the embodiment of the application has the following beneficial effects:
according to the lithium battery and the lithium analysis detection device and method of the module, the concentration of the specific gas is detected in real time through the detection module, and the detected concentration of the specific gas is provided for the battery management system; the battery management system obtains a lithium analysis threshold level according to the specific gas concentration, judges whether the lithium analysis threshold level reaches a lithium analysis early warning level, and generates early warning information and sends the early warning information to an early warning module for early warning prompt if the judgment result shows that the lithium analysis early warning level is reached. This application does not have obvious demand to analyzing lithium volume, also does not have the requirement to analyzing lithium reason, through set up detection module in that the lithium cell is inside, carries out accurate detection to the gas volume, and can quantitative how much through the gas volume judges and analyzes the lithium degree to carry out different processings, carry out battery analysis lithium safety precaution more accurately in grades.
Drawings
Fig. 1 is a block diagram of a lithium analysis detection device for a lithium battery provided in an embodiment of the present application;
FIG. 2 is a schematic diagram of a lithium battery and a detection module according to the present application;
fig. 3 is a block diagram of a lithium analysis detection device for a lithium battery according to another embodiment of the present application;
fig. 4 is a block diagram of a lithium analysis detection device for a lithium battery according to another embodiment of the present application;
fig. 5 is a block diagram of a lithium analysis detection device of a lithium battery module according to another embodiment of the present application;
fig. 6 is a schematic flow chart of a lithium analysis detection method for a lithium battery provided in an embodiment of the present application;
fig. 7 is a schematic flow chart of a lithium analysis detection method for a lithium battery according to yet another embodiment of the present application.
Detailed Description
The technical solution of the present application is further described in detail with reference to the drawings and specific embodiments of the specification. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Fig. 1 is a block diagram of a lithium analysis detection device for a lithium battery according to an embodiment of the present application. The lithium analysis detection device of the lithium battery can accurately detect whether the lithium battery analyzes lithium. Referring to fig. 1, the lithium analysis detecting device for a lithium battery of the present embodiment includes: a detection module 10, a Battery Management System (BMS) 11, and an early warning module 12.
Specifically, the detection module 10 is connected to the battery management system 11, and is configured to detect a specific gas concentration (e.g., hydrogen gas concentration) in real time and provide the detected specific gas concentration to the battery management system 11. The specific gas is a gas associated with lithium evolution, such as hydrogen.
As shown in fig. 2, the detection module 10 may be disposed inside a lithium battery between a negative electrode 101 of the lithium battery and a separator 102, the separator 102 separating an electrolyte from the negative electrode 101 of the lithium battery, the electrolyte being disposed between a positive electrode 103 of the lithium battery and the separator 102, and the detection module 10 may be a gas sensor that can detect the concentration of hydrogen around the lithium battery in real time.
And the battery management system 11 is connected with the detection module 10 and the early warning module 12, and is configured to obtain a lithium analysis threshold level according to the specific gas concentration, determine whether the lithium analysis threshold level reaches the lithium analysis early warning level, and if the lithium analysis early warning level is reached according to the determination result, generate early warning information and send the early warning information to the early warning module 12 for early warning prompt.
The battery management system 11 is a controller of the high-voltage power battery, and is configured to detect states of components inside the high-voltage power battery, including parameters such as a cell voltage, a module voltage, a total battery voltage, a current, a temperature, and a battery insulation, control and coordinate operations of the components inside the high-voltage power battery, and obtain a lithium analysis threshold level according to a specific gas concentration (e.g., a hydrogen concentration).
Specifically, the battery management system 11 may obtain a lithium analysis threshold level according to the specific gas concentration (e.g., hydrogen concentration), the corresponding relationship between the specific gas concentration (e.g., hydrogen concentration) and the lithium analysis threshold level, and determine whether the lithium analysis early warning level is reached according to the lithium analysis threshold level.
The lithium analysis threshold level may include a level 0, a level 1, a level 2, a level 3, and the like, and the correspondence relationship between the specific gas concentration (e.g., hydrogen concentration) and the lithium analysis threshold level includes: the hydrogen concentration is less than 0.1ppm (volume concentration unit) and is 0 grade, which indicates that lithium is not separated, the hydrogen concentration is between 0.1ppm and 0.3ppm and is 1 grade, which indicates that lithium is separated in a small amount, but the treatment is not needed, the hydrogen concentration is between 0.3ppm and 0.5ppm and is 2 grade, which indicates that lithium is separated in a large amount, the monitoring or early warning can be kept, the hydrogen concentration is more than 0.5ppm and is 3 grade, which indicates that lithium is separated in a large amount, and the battery needs to be disassembled and returned. The lithium analysis early warning level can be set to be 3 levels, and the early warning information can include a lithium analysis threshold level (for example, 3 levels), a hydrogen concentration (for example, 0.6 ppm), a recommended treatment mode (for example, the battery cannot be used continuously, and the battery is called back for disassembly), and the like.
In the production process of the lithium battery, a gas sensor can be arranged between the negative electrode and the diaphragm of the lithium battery, the hydrogen concentration value of the gas sensor is uploaded to the battery management system 11, and the battery management system 11 records the hydrogen value between the batteries before the lithium battery is put on the market, such as Appm. During the use of the battery, the hydrogen concentration of the battery can be monitored in real time, and when the hydrogen concentration reaches the level of a 3-level threshold value, a large amount of lithium is determined to be separated, and the battery needs to be recalled and disassembled.
The early warning Module 12 may employ an Instrument Cluster (ICM) of the vehicle. The combination meter is a meter in a passenger compartment of the vehicle and is used for displaying early warning information to a driver, such as a lithium analysis threshold level (for example, level 3), a hydrogen concentration (for example, 0.6 ppm), a treatment recommendation mode (for example, the battery cannot be used continuously, and please recall the battery for disassembly), and the like.
Preferably, as shown in fig. 3, the battery management system 11 may include a slave board 110 and a main board 111 connected to the slave board 110, wherein the slave board 110 is used for collecting the cell voltage, the temperature, judging the validity of the signal, the equalization function of the battery, and the like, and is further used for sending the specific gas concentration provided by the detection module 10 to the main board. The main board 111 is used for collecting total voltage of the battery, performing insulation detection, and the like, and is responsible for processing the monomer voltage and temperature collected by the board, and also used for obtaining a lithium analysis threshold level according to the specific gas concentration, judging whether the lithium analysis threshold level reaches a lithium analysis early warning level, and if the judgment result is that the lithium analysis early warning level is reached, generating early warning information and sending the information to the early warning module 12 for early warning prompt. This application utilizes the characteristic that the solvent reaction in the metal lithium of analysing the lithium cell and the electrolyte produced trace hydrogen, add gas sensor in the lithium cell is inside, through the quantity that detects hydrogen, carry out abnormal recognition, this application does not have obvious demand to analysing the lithium quantity, also do not have the requirement to analysing lithium reason, can distinguish according to gas production volume in grades and analyse how much of lithium quantity, and can quantitative through analysing how much of lithium quantity and judge the lithium degree of analysing, and then carry out different processing more accurately, carry out battery analysis lithium safety precaution in accurate grades.
Preferably, as shown in fig. 4, the lithium analysis detection device for lithium battery may further include a remote communication module (TEL) 40 and a server 41 connected to the battery management system.
The battery management system 11 is further configured to transmit the warning information to the server 41 through the remote communication module 40, and the server 41 analyzes and processes the warning information to perform data monitoring.
The remote communication module 40 may upload the data to the server 41 for analysis processing by the server 41 for data monitoring. The telecommunications module 40 may be a wireless communications module.
The server 41 may be disposed at a data monitoring center of the vehicle enterprise. The server 41 is further configured to contact the user terminal according to the early warning information provided by the remote communication module to prompt the user, for example, to interact with the user mobile phone APP (that is, to send and receive instructions with the user mobile phone APP), for example, to send information to the user mobile phone APP, and the like, and may also be used for data analysis, processing, storage, and the like, and may also contact a vehicle rescue group and an emergency group to handle matters such as vehicle failure.
Preferably, as shown in fig. 4, the lithium analysis detecting device for lithium battery may further include a Vehicle Control Unit (VCU) 43 connected to the battery management system.
The battery management system 11 is further configured to send the warning information to the vehicle controller 43, and the vehicle controller 43 is configured to control the vehicle to reduce the speed according to the warning information.
The vehicle controller 43 is a control center for multiple functions of the entire vehicle, performs logical judgment on the multiple functions, sends instructions to numerous parts of the entire vehicle, and controls the parts, including decision and control of functions of high voltage electricity, low voltage electricity, emergency high voltage electricity, charging, driving and the like on the entire vehicle, and is also used for controlling the entire vehicle to reduce the speed according to early warning information so as to wait for accident handling.
Based on the same concept of the foregoing embodiments, the present application embodiment provides a lithium analysis detection device for a lithium battery module, as shown in fig. 5, the lithium analysis detection device for a lithium battery module includes the lithium analysis detection device for a lithium battery in the foregoing embodiments. A lithium battery module 50 includes a plurality of lithium batteries 51, and detection module corresponds and sets up a plurality ofly, and every detection module sets up inside a lithium battery, and every detection module is used for real-time detection specific gas concentration, and provides the specific gas concentration who detects for battery management system, battery management system with detection module with early warning module links to each other for obtain according to specific gas concentration (for example can be the maximum value of specific gas concentration) and analyse lithium threshold value grade, judge it analyzes lithium early warning grade to analyze lithium threshold value grade to reach, if the judgement result for reacing and analyzing lithium early warning grade, then generate early warning information after send for early warning module carries out the early warning suggestion. Because there are a plurality of detection modules, the lithium deposition threshold level is calculated by obtaining the maximum value of the specific gas concentration at this time, for example, if there are 3 detection modules, the detected specific gas concentrations are 0.1ppm, 0.2ppm, and 0.5ppm, respectively, and the lithium deposition threshold level is obtained as level 2 according to the maximum value of 0.5ppm and the correspondence between the specific gas concentration and the lithium deposition threshold level.
Preferably, each detection module is located between the negative electrode of one lithium battery and a separator that separates the electrolyte from the negative electrode of the lithium battery.
Preferably, each detection module may be a gas sensor, and the early warning module employs a combination meter of a vehicle.
Preferably, the battery management system includes a slave plate and a master plate connected to the slave plate, the slave plate is configured to send the specific gas concentration provided by the detection module to the master plate, the master plate is configured to obtain a lithium analysis threshold level according to the specific gas concentration (for example, a maximum value of the specific gas concentration), determine whether the lithium analysis threshold level reaches the lithium analysis early warning level, and if the determination result indicates that the lithium analysis early warning level is reached, generate early warning information and send the early warning information to the early warning module for early warning prompt.
Preferably, the lithium analysis detection device of the lithium battery module further comprises a remote communication module and a server which are connected with the battery management system, the battery management system is further used for providing early warning information to the server through the remote communication module, and the server analyzes and processes the early warning information; the server is also used for contacting the user terminal according to the early warning information provided by the remote communication module to prompt the user, or contacting the vehicle rescue group and the emergency accident group to process the vehicle fault.
Preferably, the lithium analysis detection device of the lithium battery module further comprises a vehicle control unit connected with the battery management system, the battery management system is further used for sending the early warning information to the vehicle control unit, and the vehicle control unit is used for controlling the vehicle to reduce the speed according to the early warning information.
In summary, the lithium analysis detection device for the lithium battery and the module provided by the embodiment of the application detects the specific gas concentration in real time through the detection module, and provides the detected specific gas concentration for the battery management system; the battery management system obtains a lithium analysis threshold level according to the specific gas concentration, judges whether the lithium analysis threshold level reaches a lithium analysis early warning level, and generates early warning information and sends the early warning information to an early warning module for early warning prompt if the judgment result shows that the lithium analysis early warning level is reached. This application does not have obvious demand to analyzing lithium volume, also does not have the requirement to analyzing lithium reason, through set up detection module in that the lithium cell is inside, carries out accurate detection to the gas volume, and can quantitative how much through the gas volume judges and analyzes the lithium degree to carry out different processings, carry out battery analysis lithium safety precaution more accurately in grades.
Reference is made below to method embodiments of the application, details which are not described in detail in the method embodiments, and to the corresponding apparatus embodiments described above.
Fig. 6 is a schematic flow chart of a lithium analysis detection method for a lithium battery provided in the embodiment of the present application. Referring to fig. 6, the lithium analysis detection method for a lithium battery is applied to a lithium analysis detection device for a lithium battery, which can be implemented in a software and/or hardware manner, and in this embodiment, the lithium analysis detection method for a lithium battery includes the following steps:
in step S601, the detection module detects the specific gas concentration in real time and provides the detected specific gas concentration to the battery management system.
Step S602, the battery management system obtains a lithium analysis threshold level according to the specific gas concentration, judges whether the lithium analysis threshold level reaches a lithium analysis early warning level, and generates early warning information and sends the early warning information to an early warning module for early warning prompt if the judgment result shows that the lithium analysis early warning level is reached.
As shown in fig. 7, after the step S602, a step S701 may be further included.
Step S701, the battery management system further provides early warning information to a server through a remote communication module, and the server analyzes and processes the early warning information; the server also contacts with the user terminal according to the early warning information provided by the remote communication module to prompt the user, or contacts with a vehicle rescue group and an emergency accident group to process vehicle faults.
Preferably, after the step S602, the method further includes the steps of: the battery management system also sends the early warning information to the vehicle control unit, and the vehicle control unit controls the vehicle to reduce the speed according to the early warning information.
Preferably, the detection module is disposed inside the lithium battery between a negative electrode of the lithium battery and a separator that separates the electrolyte from the negative electrode of the lithium battery. The detection module is a gas sensor, and the early warning module adopts a combination instrument of a vehicle. The battery management system comprises a slave plate and a master plate connected with the slave plate, the slave plate is used for sending the specific gas concentration provided by the detection module to the master plate, the master plate is used for obtaining a lithium analysis threshold level according to the specific gas concentration, judging whether the lithium analysis threshold level reaches a lithium analysis early warning level, and if the judgment result is that the lithium analysis early warning level is reached, generating early warning information and sending the early warning information to the early warning module for early warning prompt.
In summary, in the lithium analysis detection method for the lithium battery provided in the embodiment of the present application, the detection module detects the specific gas concentration in real time, and provides the detected specific gas concentration to the battery management system; the battery management system obtains a lithium analysis threshold level according to the specific gas concentration, judges whether the lithium analysis threshold level reaches a lithium analysis early warning level, and generates early warning information and sends the early warning information to an early warning module for early warning prompt if the judgment result shows that the lithium analysis threshold level reaches the lithium analysis early warning level. This application does not have obvious demand to analyzing lithium volume, also does not have the requirement to analyzing lithium reason, through set up detection module in that the lithium cell is inside, carries out accurate detection to the gas volume, and can quantitative how much through the gas volume judges and analyzes the lithium degree to carry out different processings, carry out battery analysis lithium safety precaution more accurately in grades.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
It should be noted that, in this document, 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, the recitation of a claim "comprising a" 8230a "\8230means" does not exclude the presence of additional identical elements in the process, method, article or apparatus in which the element is incorporated, and further, similarly named components, features, elements in different embodiments of the application may have the same meaning or may have different meanings, the specific meaning of which should be determined by its interpretation in the specific embodiment or by further combination with the context of the specific embodiment.
It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein. The word "if," as used herein, may be interpreted as "at \8230; \8230when" or "when 8230; \823030when" or "in response to a determination," depending on the context. Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used in this specification, specify the presence of stated features, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "a, B or C" or "a, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.
It should be understood that, although the steps in the flowcharts in the embodiments of the present application are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless otherwise indicated herein. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, in different orders, and may be performed alternately or at least partially with respect to other steps or sub-steps of other steps.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A lithium analysis detection device for a lithium battery, comprising: the system comprises a detection module, a battery management system and an early warning module, wherein the detection module is used for detecting the battery state;
the detection module is used for detecting the concentration of the specific gas in real time and providing the detected concentration of the specific gas to the battery management system;
the battery management system is connected with the detection module and the early warning module and used for obtaining a lithium analysis threshold level according to the specific gas concentration, judging whether the lithium analysis threshold level reaches the lithium analysis early warning level, and if the judgment result shows that the lithium analysis early warning level is reached, generating early warning information and sending the early warning information to the early warning module for early warning prompt.
2. The device of claim 1, wherein the detection module is disposed within the lithium battery between a negative electrode of the lithium battery and a separator that separates the electrolyte from the negative electrode of the lithium battery.
3. The apparatus of claim 1, wherein the detection module is a gas sensor and the early warning module is a combination meter of a vehicle.
4. The device of claim 1, wherein the battery management system comprises a slave board and a master board connected with the slave board, the slave board is configured to send the specific gas concentration provided by the detection module to the master board, the master board is configured to obtain a lithium analysis threshold level according to the specific gas concentration, determine whether the lithium analysis threshold level reaches the lithium analysis early warning level, and if the determination result indicates that the lithium analysis early warning level is reached, generate early warning information and send the early warning information to the early warning module for early warning prompt.
5. The device of claim 1, further comprising a remote communication module connected to the battery management system, and a server, wherein the battery management system is further configured to provide the warning information to the server through the remote communication module, and the server analyzes and processes the warning information; the server is also used for contacting the user terminal according to the early warning information provided by the remote communication module to prompt the user, or contacting the vehicle rescue group and the emergency accident group to process the vehicle fault.
6. The device of claim 1, further comprising a vehicle control unit connected to the battery management system, wherein the battery management system is further configured to send the warning information to the vehicle control unit, and the vehicle control unit is configured to control the vehicle to slow down according to the warning information.
7. The utility model provides a lithium battery module's lithium detection device that analyses which characterized in that, it includes: the lithium analysis detection device for the lithium battery as claimed in any one of claims 1 to 6, wherein one lithium battery module comprises a plurality of lithium batteries, a plurality of detection modules are correspondingly arranged, each detection module is arranged inside one lithium battery, each detection module is used for detecting the concentration of the specific gas in real time and providing the detected concentration of the specific gas to the battery management system, the battery management system is connected with the detection modules and the early warning module and is used for obtaining the lithium analysis threshold level according to the concentration of the specific gas, judging whether the lithium analysis threshold level reaches the lithium analysis early warning level, and if the judgment result is that the lithium analysis early warning level is reached, generating early warning information and sending the early warning information to the early warning module for early warning prompt.
8. A lithium analysis detection method for a lithium battery is characterized by comprising the following steps:
the detection module detects the concentration of the specific gas in real time and provides the detected concentration of the specific gas to the battery management system;
the battery management system obtains a lithium analysis threshold level according to the specific gas concentration, judges whether the lithium analysis threshold level reaches a lithium analysis early warning level, and generates early warning information and sends the early warning information to an early warning module for early warning prompt if the judgment result shows that the lithium analysis threshold level reaches the lithium analysis early warning level.
9. The method of claim 8, further comprising:
the battery management system also provides early warning information to a server through a remote communication module, and the server analyzes and processes the early warning information; the server also contacts with the user terminal according to the early warning information provided by the remote communication module to prompt the user, or contacts with a vehicle rescue group and an emergency accident group to process vehicle faults.
10. The method of claim 8, further comprising:
the battery management system further sends the early warning information to the vehicle control unit, and the vehicle control unit controls the vehicle to reduce the speed according to the early warning information.
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