CN115939535B - Battery thermal runaway suppression method, device, equipment and storage medium - Google Patents
Battery thermal runaway suppression method, device, equipment and storage medium Download PDFInfo
- Publication number
- CN115939535B CN115939535B CN202211507585.7A CN202211507585A CN115939535B CN 115939535 B CN115939535 B CN 115939535B CN 202211507585 A CN202211507585 A CN 202211507585A CN 115939535 B CN115939535 B CN 115939535B
- Authority
- CN
- China
- Prior art keywords
- battery
- preset
- tested
- stage
- thermal runaway
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000001629 suppression Effects 0.000 title claims description 56
- 230000005764 inhibitory process Effects 0.000 claims abstract description 57
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 23
- 230000008859 change Effects 0.000 claims description 63
- 238000001816 cooling Methods 0.000 claims description 41
- 239000002245 particle Substances 0.000 claims description 23
- 239000003570 air Substances 0.000 claims description 11
- 239000002826 coolant Substances 0.000 claims description 11
- 239000012080 ambient air Substances 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- WVSNNWIIMPNRDB-UHFFFAOYSA-N 1,1,1,3,3,4,4,5,5,6,6,6-dodecafluorohexan-2-one Chemical compound FC(F)(F)C(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F WVSNNWIIMPNRDB-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
Abstract
The invention relates to the technical field of battery monitoring, in particular to a battery thermal runaway inhibition method, a device, equipment and a storage medium, wherein the method comprises the following steps: acquiring the current temperature of a battery to be tested, and acquiring a plurality of preset temperature thresholds; determining a state stage of the battery to be tested according to the current temperature and a plurality of preset temperature thresholds; when the state phase is a preset phase, acquiring target parameters of the battery to be tested in the state phase; when the target parameter meets the preset condition, selecting a corresponding inhibition strategy based on the target parameter, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy. According to the invention, the current state stage of the battery to be tested is determined according to a plurality of preset temperature thresholds, then the target parameters in the state stage are acquired according to different state stages, and finally the corresponding inhibition strategies are selected through the target parameters to inhibit the thermal runaway, so that the thermal runaway of the battery to be tested can be inhibited in time, and the safety is improved.
Description
Technical Field
The present invention relates to the field of battery monitoring technologies, and in particular, to a method, an apparatus, a device, and a storage medium for suppressing thermal runaway of a battery.
Background
At present, a great amount of heat is generated in the process of charging and discharging the battery due to various reasons, and if the heat is not dissipated timely, the heat is possibly out of control, so that serious accidents such as fire and explosion are caused.
In the existing monitoring of the thermal runaway of the battery, the thermal runaway of the battery is generally detected through a smoke sensor, namely, whether the thermal runaway is judged by detecting the smoke concentration generated after the battery fires, but the thermal runaway of the battery is already generated at the moment, the thermal runaway of the battery cannot be restrained in time, and the safety is low.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide a battery thermal runaway inhibition method, device, equipment and storage medium, and aims to solve the technical problems that the battery thermal runaway cannot be inhibited in time and the safety is low in the prior art.
In order to achieve the above object, the present invention provides a thermal runaway suppression method of a battery, the method comprising the steps of:
acquiring the current temperature of a battery to be tested, and acquiring a plurality of preset temperature thresholds;
determining a state stage of the battery to be tested according to the current temperature and the plurality of preset temperature thresholds;
when the state phase is a preset phase, acquiring target parameters of the battery to be tested in the state phase;
and when the target parameter meets a preset condition, selecting a corresponding inhibition strategy based on the target parameter, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy.
Optionally, when the state phase is a preset phase, the step of obtaining the target parameter of the battery to be tested in the state phase includes:
when the state phase is a first preset phase, acquiring the voltage change rate of the battery to be tested in the first preset phase;
correspondingly, when the target parameter meets a preset condition, selecting a corresponding inhibition strategy based on the target parameter, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy, wherein the step comprises the following steps:
when the voltage change rate exceeds a preset voltage change rate threshold, selecting a first cooling strategy as a corresponding inhibition strategy;
and inhibiting the thermal runaway of the battery to be tested through the first cooling strategy.
Optionally, when the state phase is a preset phase, the step of obtaining the target parameter of the battery to be tested in the state phase includes:
when the state phase is a first preset phase, acquiring the current change rate of the battery to be tested in the first preset phase;
correspondingly, when the target parameter meets a preset condition, selecting a corresponding inhibition strategy based on the target parameter, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy, wherein the step comprises the following steps:
when the current change rate exceeds a preset current change rate threshold, selecting a first cooling strategy as a corresponding inhibition strategy;
and inhibiting the thermal runaway of the battery to be tested through the first cooling strategy.
Optionally, when the state phase is a preset phase, the step of obtaining the target parameter of the battery to be tested in the state phase includes:
when the state phase is a second preset phase, acquiring deformation parameters of the battery to be tested in the second preset phase;
correspondingly, when the target parameter meets a preset condition, selecting a corresponding inhibition strategy based on the target parameter, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy, wherein the step comprises the following steps:
when the deformation parameters exceed a preset deformation threshold, selecting a second cooling strategy as a corresponding inhibition strategy;
and suppressing the thermal runaway of the battery to be tested through the second temperature strategy.
Optionally, when the state phase is a preset phase, the step of obtaining the target parameter of the battery to be tested in the state phase includes:
when the state phase is a second preset phase, acquiring the concentration of gas particles in the current environment of the battery to be tested in the second preset phase;
correspondingly, when the target parameter meets a preset condition, selecting a corresponding inhibition strategy based on the target parameter, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy, wherein the step comprises the following steps:
when the concentration of the gas particles exceeds a preset gas particle concentration threshold, selecting a second cooling strategy as a corresponding inhibition strategy;
and suppressing the thermal runaway of the battery to be tested through the second temperature strategy.
Optionally, when the state phase is a preset phase, the step of obtaining the target parameter of the battery to be tested in the state phase includes:
when the state phase is a second preset phase, acquiring an ambient air pressure value of the current environment of the battery to be tested in the second preset phase;
correspondingly, when the target parameter meets a preset condition, selecting a corresponding inhibition strategy based on the target parameter, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy, wherein the step comprises the following steps:
when the ambient air pressure value exceeds a preset air pressure threshold value, selecting a second cooling strategy as a corresponding inhibition strategy;
and suppressing the thermal runaway of the battery to be tested through the second temperature strategy.
Optionally, after the step of determining the state stage of the battery to be tested according to the current temperature and the plurality of preset temperature thresholds, the method further includes:
and when the state stage is a third preset stage, selecting a third cooling strategy as a corresponding inhibition strategy, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy.
In addition, in order to achieve the above object, the present invention also proposes a thermal runaway suppression device for a battery, the device comprising:
the temperature acquisition module is used for acquiring the current temperature of the battery to be detected and acquiring a plurality of preset temperature thresholds;
the stage determining module is used for determining a state stage of the battery to be tested according to the current temperature and the preset temperature thresholds;
the parameter acquisition module is used for acquiring target parameters of the battery to be tested in the state stage when the state stage is a preset stage;
and the strategy selection module is used for selecting a corresponding inhibition strategy based on the target parameter when the target parameter meets a preset condition, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy.
In addition, in order to achieve the above object, the present invention also proposes a battery thermal runaway suppression apparatus comprising: a memory, a processor, and a battery thermal runaway suppression program stored on the memory and executable on the processor, the battery thermal runaway suppression program configured to implement the steps of the battery thermal runaway suppression method as described above.
In addition, in order to achieve the above object, the present invention also proposes a storage medium having stored thereon a battery thermal runaway suppression program which, when executed by a processor, implements the steps of the battery thermal runaway suppression method as described above.
The method comprises the steps of obtaining the current temperature of a battery to be detected and obtaining a plurality of preset temperature thresholds; determining a state stage of the battery to be tested according to the current temperature and the plurality of preset temperature thresholds; when the state phase is a preset phase, acquiring target parameters of the battery to be tested in the state phase; and when the target parameter meets a preset condition, selecting a corresponding inhibition strategy based on the target parameter, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy. According to the invention, the current state stage of the battery to be tested is determined according to a plurality of preset temperature thresholds, then the target parameters in the state stage are acquired according to different state stages, and finally the corresponding inhibition strategies are selected through the target parameters to inhibit the thermal runaway, so that the thermal runaway of the battery to be tested can be inhibited in time.
Drawings
FIG. 1 is a schematic diagram of a battery thermal runaway suppression device in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of a method for inhibiting thermal runaway of a battery according to the present invention;
FIG. 3 is a schematic flow chart of a second embodiment of a method for inhibiting thermal runaway of a battery according to the present invention;
FIG. 4 is a schematic flow chart of a third embodiment of a method for inhibiting thermal runaway of a battery according to the present invention;
fig. 5 is a block diagram showing the structure of a first embodiment of the thermal runaway suppression device for a battery according to the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic diagram of a battery thermal runaway suppression device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the battery thermal runaway suppression apparatus may include: a processor 1001, such as a central processing unit (Central Processing Unit, CPU), a communication bus 1002, a user interface 1003, a network interface 1004, a memory 1005. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a high-speed random access Memory (Random Access Memory, RAM) or a stable nonvolatile Memory (NVM), such as a disk Memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
It will be appreciated by those skilled in the art that the structure shown in fig. 1 does not constitute a limitation of the battery thermal runaway suppression apparatus, and may include more or fewer components than shown, or certain components may be combined, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and a battery thermal runaway suppression program may be included in the memory 1005 as one type of storage medium.
In the battery thermal runaway suppression apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with a network server; the user interface 1003 is mainly used for data interaction with a user; the processor 1001 and the memory 1005 in the battery thermal runaway suppression apparatus of the present invention may be provided in the battery thermal runaway suppression apparatus, which invokes the battery thermal runaway suppression program stored in the memory 1005 through the processor 1001, and executes the battery thermal runaway suppression method provided by the embodiment of the present invention.
An embodiment of the invention provides a method for suppressing thermal runaway of a battery, referring to fig. 2, fig. 2 is a schematic flow chart of a first embodiment of the method for suppressing thermal runaway of a battery according to the invention.
In this embodiment, the battery thermal runaway suppression method includes the steps of:
step S10: the method comprises the steps of obtaining the current temperature of a battery to be tested, and obtaining a plurality of preset temperature thresholds.
The method of the present embodiment may be applied to a case where thermal runaway of the battery is suppressed, or other cases where thermal runaway suppression is required. The execution subject of the present embodiment may be a battery thermal runaway suppression device having data processing, network communication, and program running functions, such as a battery management system or the like, or other devices capable of achieving the same or similar functions. Here, the present embodiment and the following embodiments will be specifically described with the above-described battery thermal runaway suppression apparatus (hereinafter referred to as apparatus).
It is understood that the battery to be tested may be a lithium battery, a lead storage battery, or other batteries for storing electric power resources, which is not limited in this embodiment.
It should be understood that a temperature sensor may be disposed on the battery to be measured, the device may collect the current temperature of the battery to be measured through the temperature sensor, and in order to improve the accuracy of collection, in this embodiment, a plurality of temperature sensors may be disposed at different positions to perform collection, and finally, the current temperature is determined according to the collection result.
It should be emphasized that the preset temperature threshold may be used to distinguish the thresholds of the battery to be tested in different states, and the device may set a plurality of different preset temperature thresholds for division, where the number of the preset temperature thresholds is not limited in this embodiment, because the current temperatures of the battery to be tested in different states are different; for easy understanding, in this embodiment, three preset temperature thresholds are used for dividing, and the preset temperature thresholds are respectively recorded as: t (T) 0 、T 1 、T 2 Wherein T is 0 ＜T 1 ＜T 2 At the same time, the current temperature is recorded as T R 。
In a specific implementation, the device may obtain, by using a temperature sensor, a current temperature of the battery to be measured, and obtain the plurality of preset temperature thresholds.
Step S20: and determining the state stage of the battery to be tested according to the current temperature and the plurality of preset temperature thresholds.
It should be noted that, since the plurality of preset temperature thresholds are respectively: t (T) 0 、T 1 、T 2 Further, the four stages can be correspondingly divided into: t (T) R ＜T 0 Stage, T 0 ≤T R ≤T 1 Stage, T 1 ＜T R ≤T 2 Stage and T R ＞T 2 Stage T will be described for convenience of subsequent explanation R ＜T 0 The phase is marked as a normal phase, T is as above 0 ≤T R ≤T 1 The stage is marked as the first preset stage, and the T is set 1 ＜T R ≤T 2 The stage is marked as a second preset stage, and the T is set as the above R ＞T 2 The phase is noted as a third predetermined phase.
In a specific implementation, the device can determine a current state stage of the battery to be tested according to the current temperature of the battery to be tested and a plurality of preset temperature thresholds.
Step S30: and when the state phase is a preset phase, acquiring target parameters of the battery to be tested in the state phase.
It is understood that the preset phases may include the first preset phase, the second preset phase, and the third preset phase.
It should be understood that, since the corresponding relevant parameter changes will also be significantly different when the battery to be measured is in different stages, for example, when the battery to be measured is in a normal stage, only the current temperature change may be relatively obvious, and when the battery to be measured is in a first preset stage, the change of the voltage change rate or the current change rate of the battery to be measured may be relatively obvious, and further, the target parameter may be a parameter in which the change of the battery to be measured caused by the temperature is relatively obvious in the stage of the state, which is only convenient for understanding, and does not limit the target parameter in the actual stage.
It should be noted that, the target parameters in different state phases may be different, and the corresponding target parameters in the same state phase may be one parameter or may be a plurality of parameters.
In a specific implementation, when the device determines that the state stage of the battery to be tested is in a preset stage, the device may acquire the target parameter of the battery to be tested in the state stage.
Step S40: and when the target parameter meets a preset condition, selecting a corresponding inhibition strategy based on the target parameter, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy.
It can be understood that the preset conditions may be conditions set according to different target parameters, and may be used to determine whether the battery to be tested needs to be inhibited, and the inhibition policy may be used to inhibit thermal runaway of the battery to be tested.
It should be understood that, since the preset stage includes a first preset stage, a second preset stage and a third preset stage, the suppression strategy may further include a first cooling strategy, a second cooling strategy and a third cooling strategy in the embodiment.
In a specific implementation, when the device determines that the target device meets the preset condition, the device may select a corresponding suppression policy based on the target parameter, and suppress the battery to be tested according to the suppression policy.
Further, considering that the thermal runaway of the battery to be tested at this time is not particularly serious when the battery to be tested is in the first preset stage, the suppression can be performed by a simple suppression strategy, and further in this embodiment, the step S30 includes:
step S311: and when the state phase is a first preset phase, acquiring the voltage change rate of the battery to be tested in the first preset phase.
It should be noted that the voltage change rate may be a ratio of a voltage change value of the battery to be measured per unit time to a unit time, and the specific unit time is not limited in this embodiment.
Accordingly, the step S40 includes:
step S411: and when the voltage change rate exceeds a preset voltage change rate threshold, selecting a first cooling strategy as a corresponding inhibition strategy.
It can be understood that the preset voltage change rate threshold value can be set automatically according to actual conditions, and the first cooling strategy can be a strategy of cooling through a water source, and in this embodiment, a cooling pipeline can be set in an environment where the battery to be tested is located, and cooling is performed through water flow.
It should be emphasized that, in order to increase the cooling effect, the water temperature of the water flow may be set to be the lowest water temperature, the specific water temperature may be set according to the actual cooling capacity, and the flow rate of the water flow may be set to be the maximum flow rate of the cooling pipe.
It should be noted that, when the voltage change rate of the battery to be tested does not exceed the preset voltage change rate threshold, the device may time the duration of the battery to be tested in the first preset stage, and inhibit the battery by adopting the first cooling strategy when the time duration exceeds the preset duration, and alarm at the same time, where the preset duration may be 5 minutes or other durations, and the embodiment is not limited.
Step S4111: and inhibiting the thermal runaway of the battery to be tested through the first cooling strategy.
In a specific implementation, when the device determines that the state stage of the battery to be tested is the first preset stage, the voltage change rate of the battery to be tested in the first preset stage can be obtained, and when the voltage change rate exceeds the preset voltage change rate threshold, the lowest water temperature is adopted, and the maximum flow rate is used for performing thermal runaway inhibition on the battery to be tested, so that the inhibition cost is saved, and meanwhile, the inhibition can be performed in time.
Further, considering that the current of the battery to be measured may be changed when the battery to be measured is in the first preset stage, in this embodiment, the step S30 further includes:
step S312: and when the state phase is a first preset phase, acquiring the current change rate of the battery to be tested in the first preset phase.
It should be noted that the current change rate may be a ratio of a current change value of the battery to be measured per unit time to a unit time, and the specific unit time is not limited in this embodiment.
Accordingly, the step S40 includes:
step S412: and when the current change rate exceeds a preset current change rate threshold, selecting a first cooling strategy as a corresponding inhibition strategy.
Step S4122: and inhibiting the thermal runaway of the battery to be tested through the first cooling strategy.
It can be appreciated that the preset current change rate threshold can be set according to practical situations.
In a specific implementation, when the device determines that the state stage of the battery to be tested is the first preset stage, the current change rate of the battery to be tested in the first preset stage can be obtained, and when the current change rate exceeds the preset voltage change rate threshold, the lowest water temperature is adopted, and the maximum flow rate is used for performing thermal runaway inhibition on the battery to be tested, so that the inhibition cost is saved, and meanwhile, the inhibition can be performed in time.
According to the device, the current temperature of the battery to be detected can be obtained through the temperature sensor, and the plurality of preset temperature thresholds can be obtained; determining the current state stage of the battery to be tested according to the current temperature of the battery to be tested and a plurality of preset temperature thresholds; when the state stage of the battery to be tested is judged to be the first preset stage by the equipment, the voltage change rate or the current change rate of the battery to be tested in the first preset stage can be obtained, when the voltage change rate exceeds a preset voltage change rate threshold value or the current change rate exceeds a preset current change rate threshold value, the lowest water temperature is adopted, the maximum flow rate is used for suppressing thermal runaway of the battery to be tested, the suppression cost is saved, meanwhile, the suppression can be performed in time, and when the voltage change rate does not exceed the preset voltage change rate threshold value and the current change rate does not exceed the preset current change rate threshold value, the time of the battery to be tested in the first preset stage is timed, and when the time duration exceeds the preset time duration, the first cooling strategy is adopted for suppression, and meanwhile, the alarm is given, so that the safety is further improved.
Referring to fig. 3, fig. 3 is a flowchart illustrating a method for suppressing thermal runaway of a battery according to a second embodiment of the present invention.
Considering that when the battery to be measured is in the second preset stage, it may indicate that the thermal runaway of the battery to be measured is urgent, the cooling medium may be used to cool the battery to be measured, so based on the first embodiment, as shown in fig. 3, in this embodiment, the step S30 includes:
step S321: and when the state phase is a second preset phase, acquiring deformation parameters of the battery to be tested in the second preset phase.
It should be noted that the deformation parameter may be a ratio of the deformation amount of the battery to be measured to the unit time, and the battery to be measured may expand due to the temperature rise, so as to deform.
Accordingly, the step S40: comprising the following steps:
step S421: and when the deformation parameters exceed a preset deformation threshold, selecting a second cooling strategy as a corresponding inhibition strategy.
It can be understood that the preset deformation threshold can be set according to actual conditions.
It should be understood that the second cooling strategy may be to cut off the electrical connection of the battery to be tested and simultaneously release the cooling medium, where the cooling medium may be heptafluoropropane or perfluorohexanone, and may also be other cooling media, and the embodiment is not limited.
It should be emphasized that the amount of the cooling medium may be set according to the actual current temperature, and if the current temperature is higher, the amount may be increased.
Step S4211: and suppressing the thermal runaway of the battery to be tested through the second temperature strategy.
In a specific implementation, when the equipment judges that the state stage of the battery to be tested is the second preset stage, the deformation parameter of the battery to be tested in the second preset stage can be obtained, and when the deformation parameter exceeds the preset deformation threshold, the electrical connection of the battery to be tested is cut off, and meanwhile, the cooling medium is released to inhibit, so that the situation of serious thermal runaway can be inhibited in time, and the safety is improved.
Further, considering that when the deformation parameter is not obvious, the device may further determine based on the concentration of the gas particles in the environment where the battery to be measured is located, the specific process is as follows, where the step S30 includes:
step S322: and when the state phase is a second preset phase, acquiring the concentration of gas particles in the current environment of the battery to be tested in the second preset phase.
It should be noted that, when the battery to be measured is thermally out of control, the concentration of the gas particles in the current environment where the battery to be measured is located may be changed, and then the concentration of the gas particles may be used as a basis for determining, where the concentration of the gas particles may be a concentration of carbon monoxide, carbon dioxide, hydrogen, etc. affected by the thermal out of control of the battery, and the embodiment is not limited, and may be specifically obtained by a gas concentration sensor.
Accordingly, the step S40 includes:
step S422: when the concentration of the gas particles exceeds a preset gas particle concentration threshold, selecting a second cooling strategy as a corresponding inhibition strategy;
step S4222: and suppressing the thermal runaway of the battery to be tested through the second temperature strategy.
It can be appreciated that the preset gas particle concentration threshold can be set according to practical situations.
In a specific implementation, when the equipment determines that the state stage of the battery to be tested is the second preset stage, the gas particle concentration in the current environment in the second preset stage can be obtained, and when the gas particle concentration exceeds the preset gas particle concentration threshold, the electrical connection of the battery to be tested is cut off, and meanwhile, the cooling medium is released to inhibit, so that the situation of serious thermal runaway can be inhibited in time, and the safety is improved.
Further, considering that when the concentration of the gas particles is not obvious, the device may further determine based on the ambient air pressure value in the environment where the battery to be measured is located, the specific process is as follows, where the step S30 includes:
step S323: and when the state stage is a second preset stage, acquiring an ambient air pressure value of the current environment of the battery to be tested in the second preset stage.
It should be noted that, when the battery to be measured is out of control, the air pressure value of the battery to be measured in the current environment also changes, and the air pressure value of the environment is used as the judgment basis.
It is understood that the above-described ambient air pressure value may be obtained by an air pressure sensor.
Accordingly, the step S40 includes:
step S423: when the ambient air pressure value exceeds a preset air pressure threshold value, selecting a second cooling strategy as a corresponding inhibition strategy;
step S4233: and suppressing the thermal runaway of the battery to be tested through the second temperature strategy.
It should be understood that the preset gas particle concentration threshold may be set according to the actual situation.
In a specific implementation, when the equipment determines that the state stage of the battery to be tested is the second preset stage, the equipment can also acquire the environmental air pressure value of the current environment in the second preset stage, and cut off the electrical connection of the battery to be tested when the environmental air pressure value exceeds the preset air pressure threshold, and simultaneously release the cooling medium to inhibit, so that the situation of serious thermal runaway can be inhibited in time, and the safety is improved.
In this embodiment, when the device determines that the state stage of the battery to be tested is the second preset stage, the deformation parameter of the battery to be tested in the second preset stage, or the concentration of gas particles in the current environment, or any one of the environmental air pressure values in the current environment may be obtained as the target parameter, and when the target parameter meets the preset condition, the electrical connection of the battery to be tested is cut off, and the cooling medium is released to inhibit at the same time.
Referring to fig. 4, fig. 4 is a flowchart illustrating a thermal runaway suppression method for a battery according to a third embodiment of the present invention.
Further, considering that when the battery to be tested is in the third preset stage, it may represent that thermal runaway is serious and further needs to be suppressed immediately, according to the above embodiments, in this embodiment, as shown in fig. 4, after the step S20, the method further includes:
step S21: and when the state stage is a third preset stage, selecting a third cooling strategy as a corresponding inhibition strategy, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy.
It should be noted that, when the battery to be measured is in the third preset stage, it may indicate that the current temperature of the battery to be measured is very high at this time, and then the suppression operation needs to be performed immediately.
It should be appreciated that the third cooling strategy described above may be to cut off the electrical connection of the battery under test and simultaneously release all cooling medium at the maximum rate for suppression.
In a specific implementation, when the equipment determines that the state stage of the battery to be tested is the third preset stage, the electrical connection of the battery to be tested is cut off directly, and all cooling mediums are released at the maximum speed to inhibit, so that the inhibition speed is improved.
In this embodiment, when the device determines that the battery to be measured is in the third preset stage through the current temperature, the device directly cuts off the electrical connection of the battery to be measured, and simultaneously releases all cooling mediums at the maximum rate to perform inhibition, so as to improve the inhibition speed.
In addition, the embodiment of the present invention also proposes a storage medium having stored thereon a battery thermal runaway suppression program that, when executed by a processor, implements the steps of the battery thermal runaway suppression method as described above.
In addition, referring to fig. 5, fig. 5 is a block diagram illustrating a first embodiment of a thermal runaway suppression device for a battery according to the present invention, and the embodiment of the present invention further provides a thermal runaway suppression device for a battery, including:
the temperature obtaining module 501 is configured to obtain a current temperature of a battery to be tested, and obtain a plurality of preset temperature thresholds;
a stage determining module 502, configured to determine a state stage of the battery to be tested according to the current temperature and the plurality of preset temperature thresholds;
a parameter obtaining module 503, configured to obtain, when the state phase is a preset phase, a target parameter of the battery to be tested in the state phase;
and the policy selection module 504 is configured to select a corresponding suppression policy based on the target parameter when the target parameter meets a preset condition, and suppress thermal runaway of the battery to be tested according to the suppression policy.
According to the device, the current temperature of the battery to be detected can be obtained through the temperature sensor, and the plurality of preset temperature thresholds can be obtained; determining the current state stage of the battery to be tested according to the current temperature of the battery to be tested and a plurality of preset temperature thresholds; when the state stage of the battery to be tested is judged to be the first preset stage by the equipment, the voltage change rate or the current change rate of the battery to be tested in the first preset stage can be obtained, when the voltage change rate exceeds a preset voltage change rate threshold value or the current change rate exceeds a preset current change rate threshold value, the lowest water temperature is adopted, the maximum flow rate is used for suppressing thermal runaway of the battery to be tested, the suppression cost is saved, meanwhile, the suppression can be performed in time, and when the voltage change rate does not exceed the preset voltage change rate threshold value and the current change rate does not exceed the preset current change rate threshold value, the time of the battery to be tested in the first preset stage is timed, and when the time duration exceeds the preset time duration, the first cooling strategy is adopted for suppression, and meanwhile, the alarm is given, so that the safety is further improved.
Other embodiments or specific implementations of the battery thermal runaway suppression device according to the present invention may refer to the above method embodiments, and will not be described herein.
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 system 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 system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments. From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. read-only memory/random-access memory, magnetic disk, optical disk), comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (5)
1. A method of inhibiting thermal runaway of a battery, the method comprising the steps of:
acquiring the current temperature of a battery to be tested, and acquiring a plurality of preset temperature thresholds;
determining a state stage of the battery to be tested according to the current temperature and the plurality of preset temperature thresholds;
when the state phase is a preset phase, acquiring target parameters of the battery to be tested in the state phase;
when the target parameter meets a preset condition, selecting a corresponding inhibition strategy based on the target parameter, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy;
the preset stage comprises a first preset stage and a second preset stage, and the target parameters of the battery to be tested in the first preset stage comprise: voltage change rate and current change rate;
the target parameters of the battery to be tested in the second preset stage include: the deformation parameter, the concentration of gas particles in the current environment of the battery to be measured in the second preset stage and the ambient air pressure value of the battery to be measured in the current environment in the second preset stage are the ratio of the deformation amount of the battery to be measured in unit time to the unit time;
and when the target parameter meets a preset condition, selecting a corresponding inhibition strategy based on the target parameter, wherein the method comprises the following steps:
when the voltage change rate exceeds a preset voltage change rate threshold value or the current change rate exceeds a preset current change rate threshold value, selecting a first cooling strategy as a corresponding inhibition strategy;
and when the deformation parameter exceeds a preset deformation threshold, the gas particle concentration exceeds a preset gas particle concentration threshold or the ambient air pressure value exceeds a preset air pressure threshold, selecting a second cooling strategy as a corresponding inhibition strategy, wherein the second cooling strategy is used for cutting off the electrical connection of the battery to be tested and simultaneously releasing a cooling medium.
2. The battery thermal runaway suppression method according to claim 1, wherein after the step of determining a state stage in which the battery to be measured is located according to the current temperature and the plurality of preset temperature thresholds, further comprising:
and when the state stage is a third preset stage, selecting a third cooling strategy as a corresponding inhibition strategy, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy.
3. A battery thermal runaway suppression device, the device comprising:
the temperature acquisition module is used for acquiring the current temperature of the battery to be detected and acquiring a plurality of preset temperature thresholds;
the stage determining module is used for determining a state stage of the battery to be tested according to the current temperature and the preset temperature thresholds;
the parameter acquisition module is used for acquiring target parameters of the battery to be tested in the state stage when the state stage is a preset stage;
the strategy selection module is used for selecting a corresponding inhibition strategy based on the target parameter when the target parameter meets a preset condition, and inhibiting the thermal runaway of the battery to be tested through the inhibition strategy;
the preset stage comprises a first preset stage and a second preset stage, and the target parameters of the battery to be tested in the first preset stage comprise: voltage change rate and current change rate;
the target parameters of the battery to be tested in the second preset stage include: the deformation parameter, the concentration of gas particles in the current environment of the battery to be measured in the second preset stage and the ambient air pressure value of the battery to be measured in the current environment in the second preset stage are the ratio of the deformation amount of the battery to be measured in unit time to the unit time;
the strategy selection module is further configured to select a first cooling strategy as a corresponding suppression strategy when the voltage change rate exceeds a preset voltage change rate threshold, or when the current change rate exceeds a preset current change rate threshold;
the strategy selection module is further configured to select a second cooling strategy as a corresponding suppression strategy when the deformation parameter exceeds a preset deformation threshold, when the gas particle concentration exceeds a preset gas particle concentration threshold, or when the ambient air pressure value exceeds a preset air pressure threshold, where the second cooling strategy is to cut off electrical connection of the battery to be tested and simultaneously release a cooling medium.
4. A battery thermal runaway suppression apparatus, characterized in that the apparatus comprises: a memory, a processor, and a battery thermal runaway suppression program stored on the memory and executable on the processor, the battery thermal runaway suppression program configured to implement the steps of the battery thermal runaway suppression method of claim 1 or 2.
5. A storage medium having stored thereon a battery thermal runaway suppression program which, when executed by a processor, implements the steps of the battery thermal runaway suppression method according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211507585.7A CN115939535B (en) | 2022-11-29 | 2022-11-29 | Battery thermal runaway suppression method, device, equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211507585.7A CN115939535B (en) | 2022-11-29 | 2022-11-29 | Battery thermal runaway suppression method, device, equipment and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115939535A CN115939535A (en) | 2023-04-07 |
| CN115939535B true CN115939535B (en) | 2023-11-03 |
Family
ID=86556937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211507585.7A Active CN115939535B (en) | 2022-11-29 | 2022-11-29 | Battery thermal runaway suppression method, device, equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115939535B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210158123A (en) * | 2020-06-23 | 2021-12-30 | 주식회사 엘지에너지솔루션 | System and method for diagnosing abnormal temperature of battery cells using BMS temperature sensor |
| CN113948781A (en) * | 2021-09-26 | 2022-01-18 | 深圳普瑞赛思检测技术有限公司 | Battery thermal runaway early warning method and device |
| WO2022033348A1 (en) * | 2020-08-10 | 2022-02-17 | 中兴通讯股份有限公司 | Vehicle thermal runaway processing method and apparatus, vehicle, and computer readable storage medium |
-
2022
- 2022-11-29 CN CN202211507585.7A patent/CN115939535B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210158123A (en) * | 2020-06-23 | 2021-12-30 | 주식회사 엘지에너지솔루션 | System and method for diagnosing abnormal temperature of battery cells using BMS temperature sensor |
| WO2022033348A1 (en) * | 2020-08-10 | 2022-02-17 | 中兴通讯股份有限公司 | Vehicle thermal runaway processing method and apparatus, vehicle, and computer readable storage medium |
| CN113948781A (en) * | 2021-09-26 | 2022-01-18 | 深圳普瑞赛思检测技术有限公司 | Battery thermal runaway early warning method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115939535A (en) | 2023-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8313850B1 (en) | Method for detecting battery thermal events via battery pack pressure monitoring | |
| US8168315B1 (en) | Method for detecting battery thermal events via battery pack isolation monitoring | |
| CN110635182B (en) | Battery thermal runaway early warning method and device, electronic equipment and storage medium | |
| KR102247052B1 (en) | Method and device to detect abnormal state of battery | |
| CN110957542A (en) | Battery thermal runaway detection method, device and system and battery management unit | |
| CN109910618A (en) | A kind of battery safety management method, apparatus and new-energy automobile | |
| CN112034359B (en) | Lithium battery early safety early warning method and device based on hydrogen detection | |
| JP2022508034A (en) | Battery module for battery cell monitoring Gas sensor | |
| CN113075563A (en) | Detection method and device for lithium separation of power battery and vehicle | |
| CN115939535B (en) | Battery thermal runaway suppression method, device, equipment and storage medium | |
| US20240139571A1 (en) | Fire-protection detecting method and device, electronic device and medium | |
| US20240069117A1 (en) | Method, system, device and medium for detecting battery state of health | |
| CN116767021A (en) | Thermal runaway alarm method and device, electronic equipment and readable storage medium | |
| EP4310987A2 (en) | Battery safety monitoring system and method, and energy storage system | |
| JP5633476B2 (en) | Unauthorized replacement detection system and method for secondary battery | |
| CN109323361B (en) | Method and system for detecting operation capacity of air conditioner | |
| CN113581014B (en) | Adaptive battery working condition cold strategy method, device, equipment and readable storage medium | |
| CN114720893A (en) | Evaluation early warning method and system for short circuit boundary conditions in battery cell | |
| CN114676019A (en) | Method, device, equipment and storage medium for monitoring state of central processing unit | |
| KR20230120168A (en) | Waste battery thermal runaway prevention system using ai prediction model and sensor monitoring | |
| CN114976325A (en) | Thermal runaway determination method, battery management system, battery and vehicle | |
| CN116914296A (en) | Battery abnormality early warning processing method and device | |
| CN113829948B (en) | Lithium ion battery safety assessment method and device and electronic equipment | |
| CN116737018B (en) | Touch screen starting method and system | |
| US20230253643A1 (en) | Battery thermal runway detection/prevention |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 401120 No.107 dataguzhong Road, Xiantao street, Yubei District, Chongqing Patentee after: Chongqing Gengchen Energy Technology Co.,Ltd. Country or region after: China Address before: 401120 No.107 dataguzhong Road, Xiantao street, Yubei District, Chongqing Patentee before: Chongqing Three Gorges Times Energy Technology Co.,Ltd. Country or region before: China |