CN113611942B - Battery module thermal runaway early warning control method, device and system - Google Patents
Battery module thermal runaway early warning control method, device and system Download PDFInfo
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- CN113611942B CN113611942B CN202110756859.5A CN202110756859A CN113611942B CN 113611942 B CN113611942 B CN 113611942B CN 202110756859 A CN202110756859 A CN 202110756859A CN 113611942 B CN113611942 B CN 113611942B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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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 invention relates to a thermal runaway early warning control method for a battery module, which comprises the following steps: respectively judging whether the temperature rising rate, the voltage and the air pressure rising rate of the battery module meet corresponding preset thresholds; if one of the temperature rising rate, the voltage and the air pressure rising rate meets a corresponding preset threshold value, sending a first processing measure signal to the battery module, wherein the first processing measure signal indicates that the battery module is cooled circularly through cooling liquid; if at least two of the temperature rise rate, the voltage rise rate and the air pressure rise rate meet corresponding preset threshold values, second processing measure signals are sent to the battery module, wherein the second processing measure signals indicate that the battery module carries out thermal runaway early warning and water the battery module through cooling liquid, therefore, the probability of thermal runaway occurring before the thermal runaway of the battery module occurs can be reduced, the thermal runaway early warning can be sent out in advance, and passengers can evacuate in advance when the thermal runaway occurs.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery module thermal runaway early warning control method, device and system.
Background
In order to relieve the problems of energy shortage and environmental pollution, new energy automobiles are already listed in strategic emerging technology industries in China. The motorization of the automobile power system has gradually become one of the main trends of the future automobile technology development. However, in the use process of the new energy automobile, accidents of fire and explosion of the new energy automobile caused by thermal runaway of the power battery occur at times, so that the safety of the power battery serving as a power core energy source of the new energy automobile is more and more emphasized.
In the related art, whether the thermal runaway of the battery occurs is mainly judged by detecting the volume change of the power battery, but the method for judging whether the thermal runaway of the battery occurs according to the volume change of the power battery is the detection of the power battery with the thermal runaway which occurs, at the moment, the damage of the thermal runaway is generated, and even if the thermal runaway is detected, a passenger does not have enough time to escape and cannot take corresponding treatment measures before the thermal runaway occurs.
Disclosure of Invention
The embodiment of the invention provides a thermal runaway early warning control method, device and system for a battery module, and aims to solve the problems that measures cannot be taken before thermal runaway of the battery module occurs to reduce the probability of the occurrence of the thermal runaway and a thermal runaway early warning cannot be sent out in advance in the related art.
In a first aspect, a battery module thermal runaway early warning control method is provided, which includes the following steps: respectively judging whether the temperature rise rate, the voltage and the air pressure rise rate of the battery module meet corresponding preset thresholds; if one of the temperature rise rate, the voltage and the air pressure rise rate meets a corresponding preset threshold value, sending a first processing measure signal to the battery module, wherein the first processing measure signal indicates that the battery module is cooled circularly through cooling liquid; and if at least two of the temperature rising rate, the voltage and the air pressure rising rate meet corresponding preset threshold values, sending a second processing measure signal to the battery module, wherein the second processing measure signal indicates that the battery module carries out thermal runaway early warning and waters the battery module through the cooling liquid.
In some embodiments, the second process measure signal indicating that the battery module is performing the thermal runaway warning and the watering the battery module with the coolant includes: the second processing measure signal indicates that the battery module carries out thermal runaway early warning when at least two of the temperature rising rate, the voltage and the air pressure rising rate meet corresponding preset thresholds; and when at least two of the temperature rising rate, the voltage and the air pressure rising rate meet corresponding preset thresholds and last for a preset time, the cooling liquid irrigates the battery module.
In some embodiments, the respectively determining whether the temperature rise rate, the voltage and the air pressure rise rate of the battery module satisfy the corresponding preset thresholds includes: and judging whether the temperature rising rate of the battery module is greater than 2 ℃/min, judging whether the voltage of the battery module is less than 2.1v, and judging whether the air pressure rising rate of the battery module is greater than 1kpa/min.
In some embodiments, the battery module includes a plurality of battery cores, a water cooling pipeline is provided around the battery cores, and the cooling of the battery module by the cooling liquid includes: and circularly cooling the battery module through the cooling liquid circulating in the water cooling pipeline.
In some embodiments, the causing the battery module to perform the warning of the thermal runaway includes: the traffic alarm lamp lights the red lamp and the buzzer rings to give out early warning.
In some embodiments, the battery module is provided with a water cooling pipeline, a cooling liquid circulates in the water cooling pipeline, a solenoid valve switch is fixed on the water cooling pipeline, and the cooling liquid is used for watering the battery module and includes: and controlling the electromagnetic valve switch to be opened, so that the cooling liquid is sprayed out from the water cooling pipeline and irrigates the battery module.
The second aspect provides a battery module thermal runaway early warning controlling means, its characterized in that, it includes: the judging module is used for respectively judging whether the temperature rising rate, the voltage and the air pressure rising rate of the battery module meet corresponding preset thresholds; a sending module, configured to send a first processing measure signal to the battery module if one of the temperature increase rate, the voltage, and the air pressure increase rate satisfies a corresponding preset threshold, where the first processing measure signal indicates that the battery module is cooled cyclically by a cooling liquid; the sending module is further configured to send a second processing measure signal to the battery module if at least two of the temperature rise rate, the voltage and the air pressure rise rate meet corresponding preset thresholds, where the second processing measure signal indicates that the battery module performs a thermal runaway early warning and waters the battery module with the coolant.
The third aspect provides a battery module thermal runaway early warning control system, its characterized in that, it includes: the judging module is used for respectively judging whether the temperature rising rate, the voltage and the air pressure rising rate of the battery module meet corresponding preset thresholds; a sending module, configured to send a first processing measure signal to the battery module if one of the temperature increase rate, the voltage, and the air pressure increase rate satisfies a corresponding preset threshold, where the first processing measure signal indicates that the battery module is cooled cyclically by a cooling liquid; the sending module is further configured to send a second processing measure signal to the battery module if at least two of the temperature rise rate, the voltage and the air pressure rise rate meet corresponding preset thresholds, where the second processing measure signal indicates that the battery module performs a thermal runaway warning and waters the battery module through the cooling liquid; the battery module comprises a plurality of battery cores and water cooling pipelines arranged around the battery cores; the water cooling plate is integrated with the battery module and used for cooling the battery module; the electromagnetic valve switch is fixed on the water cooling pipeline; when the battery module receives the first treatment measure signal, cooling liquid is circulated in the water cooling pipeline to cool the battery module; when the battery module receives during the second measures signal of handling, the battery module carries out the early warning of thermal runaway, and opens the solenoid valve switch, makes the coolant liquid watering the battery module.
In a fourth aspect, a computer device is provided, where the computer device includes a processor and a memory, where the memory stores at least one program code, and the program code is loaded and executed by the processor to implement the battery module thermal runaway early warning control method.
In a fifth aspect, a computer-readable storage medium is provided, where at least one program code is stored in the computer-readable storage medium, and the program code is loaded and executed by a processor to implement the method for warning and controlling thermal runaway of a battery module.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a battery thermal runaway early warning control method, a device and a system, wherein the battery thermal runaway early warning control method comprises the following steps: whether the temperature rise rate, the voltage and the air pressure rise rate of the battery module meet corresponding preset thresholds or not is used for judging whether the battery module has thermal runaway or not, and the state before the thermal runaway occurs and the state when the thermal runaway occurs are judged according to different conditions, and corresponding processing measures are taken, so that the measure can be taken before the thermal runaway of the battery module occurs to reduce the probability of the thermal runaway occurrence and the thermal runaway early warning is sent out in advance to inform passengers of escaping.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart illustrating steps of a first method for early warning and controlling thermal runaway of a battery module according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating steps of a second method for warning and controlling thermal runaway of a battery module according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a thermal runaway early warning control device for a battery module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a battery module of a thermal runaway early warning control system for a battery module according to an embodiment of the invention.
In the figure:
1. a battery module; 12. a solenoid valve switch; 13. a water-cooling pipeline; 14. and (5) a water-cooling plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the invention provides a thermal runaway early warning control method, device and system for a battery module, which can solve the problems that measures are taken before thermal runaway of the battery module to reduce the probability of the occurrence of the thermal runaway and thermal runaway early warning is sent out in advance.
Referring to fig. 1, a method for early warning and controlling thermal runaway of a battery module according to an embodiment of the invention includes the following steps:
s1: whether the temperature rise rate, the voltage and the air pressure rise rate of the battery module 1 meet corresponding preset thresholds or not is respectively judged.
In some embodiments, before step S1, a temperature rise rate signal, a voltage signal, and an air pressure rise rate signal of the battery module 1 may be collected, in this embodiment, a temperature rise rate signal may be obtained by detecting a temperature of the battery module 1 through an NTC (negative temperature coefficient) temperature sensor, a voltage signal may be obtained by detecting a voltage of the battery module 1 through a voltage sensor, an air pressure rise rate signal may be obtained by detecting an air pressure of the battery module 1 through an air pressure sensor, and after the temperature rise rate signal, the voltage signal, and the air pressure rise rate signal of the battery module 1 are collected, it is determined whether the temperature rise rate signal, the voltage signal, and the air pressure rise rate signal satisfy corresponding preset thresholds, according to specific conditions, a state before the thermal runaway of the battery module 1 occurs and a state when the thermal runaway of the battery module 1 occurs may be determined, and measures may be taken before the thermal runaway occurs, and a thermal runaway warning may be sent in advance to notify an occupant of leaving danger.
In some embodiments, step S1 may comprise: the preset threshold of the temperature rise rate of the battery module 1 can be 2 ℃/min, whether the temperature rise rate of the battery module 1 is greater than 2 ℃/min or not can be judged, the preset threshold of the voltage of the battery module 1 can be 2.1v or not, whether the voltage of the battery module 1 is less than 2.1v or not can be judged, the preset threshold of the air pressure rise rate of the battery module 1 can be 1kpa/min or not can be judged, and whether the air pressure rise rate of the battery module 1 is greater than 1kpa/min or not can be judged.
S2: if one of the temperature rise rate, the voltage and the air pressure rise rate meets a corresponding preset threshold value, sending a first processing measure signal to the battery module 1, wherein the first processing measure signal indicates that the battery module 1 is cooled circularly by cooling liquid; and if at least two of the temperature rise rate, the voltage and the air pressure rise rate meet corresponding preset threshold values, sending a second processing measure signal to the battery module 1, wherein the second processing measure signal indicates that the battery module 1 carries out thermal runaway early warning and waters the battery module 1 through the cooling liquid.
In some embodiments, step S2 may comprise: if one of the temperature rise rate signal, the voltage signal and the air pressure rise rate signal of the battery module 1 meets the corresponding preset threshold value, it is judged that the battery module 1 at the moment is likely to generate thermal runaway, the state of the battery module 1 is in front of the thermal runaway, a first processing measure signal can be sent to the battery module 1, wherein the first processing measure signal indicates that the battery module 1 is cooled circularly through cooling liquid, the battery module 1 is cooled, and the probability of the thermal runaway generation of the battery module 1 is reduced by reducing the temperature of the battery module 1, so that the probability of the thermal runaway generation can be reduced by taking measures for cooling the battery module 1 before the thermal runaway generation of the battery module 1.
In some embodiments, the battery module 1 may include a plurality of battery cells, in this embodiment, the battery module 1 includes four battery cells, in other embodiments, the battery module 1 may include other number of battery cells, and the water cooling pipeline 13 is disposed around the battery cells, in this embodiment, the shape of the water cooling pipeline 13 is a U-shaped pipe, in other embodiments, the shape of the water cooling pipeline 13 may be other shapes such as an S-shaped pipe, and the water cooling pipeline 13 is disposed by being closely attached to the surface of the battery cells, the water cooling pipeline 13 has a water inlet and a water outlet, and the step S2 may include the step S2 of cooling the battery module 1 by the cooling liquid in a circulating manner: inflow from the water inlet of water cooling pipeline 13 through the coolant liquid, the coolant liquid flows from the delivery port of water cooling pipeline 13, make the coolant liquid at water cooling pipeline 13 inner loop to electric core cooling, in this embodiment, when battery module 1 receives first treatment measure letter, adjust the maximum value with the coolant liquid flow in the water cooling pipeline 13, and adjust the coolant liquid temperature in the water cooling pipeline 13 to minimumly, then at the water cooling pipeline 13 inner loop through the coolant liquid to electric core cooling, thereby cool off battery module 1, such cooling effect is good, can further reduce the probability that battery module 1 thermal runaway takes place.
In some embodiments, step S2 may further include: if at least two of the temperature rise rate signal, the voltage signal and the air pressure rise rate signal of the battery module 1 meet corresponding preset thresholds, the battery module 1 at the moment is judged to be about to generate thermal runaway, a second processing measure signal can be sent to the battery module 1, wherein the second processing measure signal indicates the battery module 1 to perform thermal runaway early warning, a passenger is informed that the thermal runaway of the battery module 1 is about to occur, the passenger needs to escape from an automobile danger immediately, the battery module 1 is irrigated by cooling liquid, the temperature of the battery module 1 is rapidly reduced, the purpose of rapidly controlling the temperature of the battery module 1 and delaying the fire spreading of the battery module 1 is achieved, therefore, the thermal runaway early warning can be sent out in advance to inform the passenger when the thermal runaway is about to occur, the passenger has sufficient time to escape from the danger, the fire spreading of the battery module 1 can be delayed after the thermal runaway occurs, the damage of the thermal runaway to the automobile is reduced, and the loss is reduced.
Referring to fig. 2, in some embodiments, the second processing measure signal indicating that the battery module 1 performs the warning of the thermal runaway and watering the battery module 1 with the coolant may include: the second processing measure signal can indicate that when at least two of the temperature rise rate signal, the voltage signal and the air pressure rise rate signal of the battery module 1 meet the corresponding preset threshold, the battery module 1 is judged to be about to generate thermal runaway at the moment, and the second processing measure signal indicates the battery module 1 to perform thermal runaway early warning and inform passengers of needing to escape from the automobile to avoid danger immediately; when at least two of the temperature rise rate signal, the voltage signal and the air pressure rise rate signal of the battery module 1 meet corresponding preset thresholds and last for a preset time, in this embodiment, the preset time is 200ms, after it is determined that thermal runaway occurs at this time, the battery module 1 is ignited and burned, and the thermal runaway state cannot be recovered, the second processing measure signal can indicate that the coolant waters the battery module 1, so as to rapidly reduce the temperature of the battery module 1 and delay the fire spreading of the battery module 1 for fire extinguishing, by means of the arrangement of this way, a passenger can be informed to escape in advance when the thermal runaway of the battery module 1 is about to occur, the safety of the passenger is ensured, and a preset time can be reserved in a way of reducing the temperature of the battery module 1, so as to recover the battery module 1 from the thermal runaway state, after the thermal runaway state of the battery module 1 lasts for a preset time, it is determined that the thermal runaway state of the battery module 1 cannot be recovered, and then the coolant waters the battery module 1, thereby, on the basis of ensuring the safety of the passenger, time is reserved for fire extinguishing the battery module 1, and the damage of the electric car can be reduced, and the damage of the electric car can be self-saving.
In some embodiments, the warning of the thermal runaway of the battery module 1 may include: battery module 1 is connected with red green alarm lamp and bee calling organ, battery module 1 is installed when electric automobile, red green alarm lamp and bee calling organ can be installed in electric automobile's well accuse, when battery module 1 received the second treatment signal, through the bright red lamp of red green alarm lamp and bee calling organ ring and send the early warning, can carry out the early warning in two aspects of image and sound, inform passenger battery module 1 to be about to take place the thermal runaway, need flee from the car immediately and keep away the danger, the early warning is effectual.
Referring to fig. 4, in some embodiments, the coolant-irrigated battery module 1 may include: the battery module 1 can be provided with the water cooling pipeline 13, the inside circulation of water cooling pipeline 13 has the coolant liquid, fixed mounting has solenoid valve switch 12 on the water cooling pipeline 13, in this embodiment, solenoid valve switch 12 is fixed in the water inlet department of water cooling pipeline 13, in other embodiments, solenoid valve switch 12 can be fixed in the water outlet department of water cooling pipeline 13 or other positions on the water cooling pipeline 13, solenoid valve switch 12 is in the state of closing all the time, when the battery module 1 receives the second treatment measure signal, can open through control solenoid valve switch 12, make the coolant liquid spout from water cooling pipeline 13, and water battery module 1, reduce the temperature of battery module 1 rapidly, reach the temperature of quick control battery module 1, delay the purpose that the behavior of a fire of battery module 1 spreads.
Referring to fig. 3, in some embodiments, a thermal runaway warning control device for a battery module provided in an embodiment of the present invention may include: the judging module can be used for respectively judging whether the temperature rising rate, the voltage and the air pressure rising rate of the battery module 1 meet corresponding preset threshold values; the sending module can be used for sending a corresponding processing measure signal to the battery module 1 according to the judgment result of the judging module, and sending a first processing measure signal to the battery module 1 if one of the temperature rising rate, the voltage and the air pressure rising rate of the battery module 1 meets a corresponding preset threshold, wherein the first processing measure signal indicates that the battery module 1 can be cooled circularly through cooling liquid; if at least two of the temperature rise rate, the voltage and the air pressure rise rate of the battery module 1 meet corresponding preset thresholds, a second processing measure signal can be sent to the battery module 1, wherein the second processing measure signal indicates that the battery module 1 can perform thermal runaway early warning and can water the battery module 1 through cooling liquid, the first processing measure signal can be sent before the thermal runaway of the battery module 1 occurs through the judgment of the temperature rise rate, the voltage and the air pressure rise rate of the battery module 1 by the device, the probability of the thermal runaway can be reduced by taking measures, the first processing measure signal can be sent when the thermal runaway of the battery module 1 is about to occur, a passenger is informed to escape from an electric vehicle to avoid danger, and the battery module 1 can be watered by the cooling liquid to extinguish fire.
Referring to fig. 3 and 4, in some embodiments, a battery module thermal runaway early warning control system provided in an embodiment of the present invention may include: the judging module can be used for respectively judging whether the temperature rising rate, the voltage and the air pressure rising rate of the battery module 1 meet corresponding preset threshold values; the sending module can be used for sending a corresponding processing measure signal to the battery module 1 according to the judgment result of the judging module, and sending a first processing measure signal to the battery module 1 if one of the temperature rising rate, the voltage and the air pressure rising rate of the battery module 1 meets a corresponding preset threshold, wherein the first processing measure signal indicates that the battery module 1 can be cooled circularly through cooling liquid; if at least two of the temperature rise rate, the voltage and the air pressure rise rate of the battery module 1 meet corresponding preset thresholds, a second processing measure signal can be sent to the battery module 1, wherein the second processing measure signal indicates that the battery module 1 can perform thermal runaway early warning and can water the battery module 1 through cooling liquid; the battery module 1 may include a plurality of cells, and a water cooling pipeline 13 disposed around the cells; the water cooling plate 14, the water cooling plate 14 can be integrated in the battery module 1, and can be used for cooling the battery module 1; and an electromagnetic valve switch 12 which can be fixed on the water cooling pipeline 13, and the electromagnetic valve switch 12 is in a closed state for a long time; when the battery module 1 receives the first processing measure signal, the cooling liquid can be circulated in the water cooling pipeline 13 to circularly cool the battery module 1; when the battery module 1 receives the second processing measure signal, the battery module 1 can be subjected to thermal runaway early warning, and the electromagnetic valve switch 12 is opened, so that the battery module 1 is irrigated by the cooling liquid to extinguish fire.
In some embodiments, the embodiment of the present invention further provides a computer device, where the computer device may include a processor and a memory, and the memory may store one program code or multiple program codes, where the program code is loaded and executed by the processor to implement the battery module thermal runaway early warning control method as described above.
In some embodiments, the present invention further provides a computer-readable storage medium, where one or more program codes may be stored in the computer-readable storage medium, and the program codes are loaded and executed by a processor to implement the above-mentioned battery module thermal runaway early warning control method.
The principles of the battery module thermal runaway early warning control method, device and system provided by the embodiment of the invention are as follows:
because battery module thermal runaway early warning control method, device and system, it can include: the battery module thermal runaway early warning control device can judge whether the battery module 1 is in thermal runaway or not according to whether the collected temperature rise rate signal, voltage signal and air pressure rise rate signal of the battery module 1 meet corresponding preset thresholds or not, and can make corresponding processing measures, if one of the temperature rise rate signal, the voltage signal and the air pressure rise rate signal of the battery module 1 meets the corresponding preset threshold, the battery module thermal runaway early warning control device can send a first processing measure signal to the battery module 1, wherein the first processing measure signal can indicate that the battery module 1 is cooled circularly through cooling liquid, the battery module 1 is cooled, and the probability of the thermal runaway of the battery module 1 is reduced by reducing the temperature of the battery module 1; if at least two of the temperature rise rate signal, the voltage signal and the air pressure rise rate signal of the battery module 1 meet corresponding preset thresholds, the battery module thermal runaway early warning control device can send a second processing measure signal to the battery module 1, wherein the second processing measure signal can instruct the battery module 1 to perform thermal runaway early warning to inform passengers that the battery module 1 is about to generate thermal runaway and needs to escape from an automobile to avoid danger immediately, and the battery module 1 can be irrigated by cooling liquid to reduce the temperature of the battery module 1 rapidly, so that the temperature of the battery module 1 can be controlled rapidly, the fire spreading of the battery module 1 can be delayed, therefore, measures can be taken before the thermal runaway of the battery module 1 occurs to reduce the probability of the thermal runaway occurrence, and the thermal runaway early warning is sent in advance to inform the escape when the thermal runaway is about to occur, and the fire spreading of the battery module 1 can be delayed.
Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electrical, mechanical or other form of connection.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A battery module thermal runaway early warning control method is characterized by comprising the following steps:
respectively judging whether the temperature rising rate, the voltage and the air pressure rising rate of the battery module (1) meet corresponding preset threshold values;
if one of the temperature rise rate, the voltage and the air pressure rise rate meets a corresponding preset threshold value, sending a first processing measure signal to the battery module (1), wherein the first processing measure signal indicates that the battery module (1) is cooled circularly by cooling liquid;
if at least two of the temperature rise rate, the voltage and the air pressure rise rate meet corresponding preset threshold values, sending a second processing measure signal to the battery module (1), wherein the second processing measure signal indicates that the battery module (1) carries out thermal runaway early warning and waters the battery module (1) through the cooling liquid;
the second treatment measure signal indicates that the battery module (1) carries out thermal runaway early warning and waters the battery module (1) through the coolant liquid includes:
the second processing measure signal indicates that the battery module (1) carries out thermal runaway early warning when at least two of the temperature rising rate, the voltage and the air pressure rising rate meet corresponding preset thresholds;
and when at least two of the temperature rising rate, the voltage and the air pressure rising rate meet corresponding preset threshold values and last for a preset time, the cooling liquid irrigates the battery module (1).
2. The battery module thermal runaway early warning control method of claim 1, wherein the respectively determining whether the temperature rise rate, the voltage and the air pressure rise rate of the battery module (1) meet corresponding preset thresholds comprises:
judging whether the temperature rising rate of the battery module (1) is greater than 2 ℃/min, judging whether the voltage of the battery module (1) is less than 2.1v, and judging whether the air pressure rising rate of the battery module (1) is greater than 1kpa/1min.
3. The battery module thermal runaway early warning control method of claim 1, wherein the battery module (1) comprises a plurality of cells, water cooling pipelines (13) are arranged around the cells, and the cooling of the battery module (1) by the coolant comprises:
and circularly cooling the battery module (1) by the cooling liquid circulating in the water cooling pipeline (13).
4. The battery module thermal runaway early warning control method according to claim 1, wherein the causing the battery module (1) to perform thermal runaway early warning comprises:
the red light is lightened through the traffic alarm lamp and the buzzer rings to send out early warning.
5. The battery module thermal runaway early warning control method according to claim 1, wherein the battery module (1) is provided with a water cooling pipeline (13), a cooling liquid circulates in the water cooling pipeline (13), a solenoid valve switch (12) is fixed on the water cooling pipeline (13), and the step of irrigating the battery module (1) with the cooling liquid comprises:
and opening the electromagnetic valve switch (12) by controlling, so that the cooling liquid is sprayed out from the water cooling pipeline (13) and irrigates the battery module (1).
6. The utility model provides a battery module thermal runaway early warning controlling means which characterized in that, it includes:
the judging module is used for respectively judging whether the temperature rising rate, the voltage and the air pressure rising rate of the battery module (1) meet corresponding preset threshold values;
a sending module, configured to send a first processing measure signal to the battery module (1) if one of the temperature increase rate, the voltage, and the air pressure increase rate satisfies a corresponding preset threshold, where the first processing measure signal indicates that the battery module (1) is cooled cyclically by a cooling liquid;
the sending module is further configured to send a second processing measure signal to the battery module (1) if at least two of the temperature rise rate, the voltage and the air pressure rise rate satisfy corresponding preset thresholds, where the second processing measure signal indicates that the battery module (1) performs a thermal runaway warning and waters the battery module (1) through the coolant;
the second processing measure signal indicates that the battery module (1) carries out thermal runaway early warning when at least two of the temperature rising rate, the voltage and the air pressure rising rate meet corresponding preset thresholds;
and when at least two of the temperature rising rate, the voltage and the air pressure rising rate meet corresponding preset threshold values and last for a preset time, the cooling liquid irrigates the battery module (1).
7. The utility model provides a battery module thermal runaway early warning control system which characterized in that, it includes:
the judging module is used for respectively judging whether the temperature rising rate, the voltage and the air pressure rising rate of the battery module (1) meet corresponding preset threshold values or not;
a sending module, configured to send a first processing measure signal to the battery module (1) if one of the temperature increase rate, the voltage, and the air pressure increase rate satisfies a corresponding preset threshold, where the first processing measure signal indicates that the battery module (1) is cooled cyclically by a cooling liquid;
the sending module is further configured to send a second processing measure signal to the battery module (1) if at least two of the temperature rise rate, the voltage and the air pressure rise rate meet corresponding preset thresholds, wherein the second processing measure signal indicates that the battery module (1) performs a thermal runaway early warning and waters the battery module (1) through the cooling liquid;
the second processing measure signal indicates that the battery module (1) carries out thermal runaway early warning when at least two of the temperature rising rate, the voltage and the air pressure rising rate meet corresponding preset thresholds;
when at least two of the temperature rising rate, the voltage and the air pressure rising rate meet corresponding preset thresholds and last for a preset time, the battery module (1) is irrigated by the cooling liquid;
the battery module (1) comprises a plurality of battery cores and water cooling pipelines (13) arranged around the battery cores;
a water-cooling plate (14) integrated with the battery module (1), the water-cooling plate (14) being used to cool the battery module (1);
and an electromagnetic valve switch (12) fixed to the water cooling pipeline (13);
when the battery module (1) receives the first treatment measure signal, cooling liquid is circulated in the water cooling pipeline (13) to cool the battery module (1);
when the battery module (1) receives the second treatment measure signal, the battery module (1) carries out thermal runaway early warning, and the electromagnetic valve switch (12) is opened, so that the battery module (1) is irrigated by cooling liquid.
8. A computer device, characterized in that the computer device comprises a processor and a memory, wherein the memory stores at least one program code, and the program code is loaded and executed by the processor to realize the battery module thermal runaway pre-warning control method according to any one of claims 1 to 5.
9. A computer-readable storage medium, wherein at least one program code is stored in the computer-readable storage medium, and the program code is loaded and executed by a processor to implement the method for warning and controlling thermal runaway of a battery module according to any one of claims 1 to 5.
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| CN115764080B (en) * | 2022-12-15 | 2023-11-14 | 广州星翼智慧能源技术有限公司 | Intelligent control method and system for thermal runaway of battery |
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| KR102367352B1 (en) * | 2017-03-31 | 2022-02-25 | 삼성전자주식회사 | Battery Device, Device and Method for monitoring Battery |
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| CN211605343U (en) * | 2020-01-20 | 2020-09-29 | 威睿电动汽车技术(宁波)有限公司 | Battery thermal runaway processing system |
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