CN113809441A - Battery pack thermal runaway control method and device, energy storage cabinet and storage medium - Google Patents
Battery pack thermal runaway control method and device, energy storage cabinet and storage medium Download PDFInfo
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- CN113809441A CN113809441A CN202111090514.7A CN202111090514A CN113809441A CN 113809441 A CN113809441 A CN 113809441A CN 202111090514 A CN202111090514 A CN 202111090514A CN 113809441 A CN113809441 A CN 113809441A
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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
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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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
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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 embodiment of the invention provides a thermal runaway control method and device for a battery pack, an energy storage cabinet and a storage medium, and relates to the technical field of energy storage setting. The thermal runaway control method for the battery pack is applied to the energy storage cabinet. The energy storage cabinet comprises a battery pack, a fire-fighting system and a heat exchange system. The fire-fighting system and the heat exchange system are respectively communicated with the battery pack through pipelines. The control method comprises the step of receiving a detection signal, wherein the detection signal represents the operation state of the battery pack. And judging whether the detection signal is a thermal runaway signal or not. And if the detection signal is the thermal runaway signal, controlling the fire-fighting system to convey the fire-fighting medium to the battery pack and controlling the heat exchange system to convey the cold heat exchange medium to the battery pack. The fire-fighting system is controlled to extinguish fire or inhibit the generation of open fire and the heat of the battery pack is taken away in a mode of cooling through the heat exchange system, so that the thermal runaway and the spread of the battery pack are inhibited, and the expansion of loss caused by fire explosion accidents when the thermal runaway and the spread of the battery pack are caused is avoided.
Description
Technical Field
The invention relates to the field of energy storage equipment, in particular to a battery pack thermal runaway control method, a control device, an energy storage cabinet and a storage medium.
Background
In recent years, with the development of smart grid construction, the demand of battery energy storage is increasing. The battery energy storage system has the advantages of peak clipping and valley filling, emergency standby, improvement of electric energy quality and the like. Lithium ion batteries are becoming the most widely used batteries in battery energy storage systems due to their advantages of high energy density, high output power, long charge and discharge life, wide working temperature range, small self-discharge, and the like. Meanwhile, with the continuous increase of the application demand of battery energy storage, the construction is fast. The energy storage battery cabinet is produced by transportation.
In the prior art, when a battery pack is under abuse conditions such as overheating, overcharging and short-circuiting, thermal runaway and spreading can occur in the battery due to heat accumulation, and further fire and explosion accidents are caused.
Disclosure of Invention
The object of the present invention includes, for example, providing a battery pack thermal runaway control method, a control device, an energy storage cabinet and a storage medium, which can suppress thermal runaway and propagation of a battery pack when the thermal runaway of the battery pack occurs, so as to avoid expansion of loss caused by a fire explosion accident when the thermal runaway and propagation of the battery pack occur.
Embodiments of the invention may be implemented as follows:
in a first aspect, the invention provides a battery pack thermal runaway control method, which is applied to an energy storage cabinet, wherein the energy storage cabinet comprises a battery pack, a fire fighting system and a heat exchange system, the fire fighting system and the heat exchange system are respectively communicated with the battery pack through pipelines, and the control method comprises the following steps:
receiving a detection signal, wherein the detection signal represents the running state of the battery pack;
judging whether the detection signal is a thermal runaway signal or not;
and if the detection signal is the thermal runaway signal, controlling the fire-fighting system to convey the fire-fighting medium to the battery pack and controlling the heat exchange system to convey the cold heat exchange medium to the battery pack.
In an alternative embodiment, the number of the battery packs includes a plurality;
the step of receiving a probe signal comprises:
receiving detection signals of a plurality of battery packs, wherein the detection signals comprise a plurality of groups, and the plurality of groups of detection signals correspond to the plurality of battery packs one to one;
if the detection signal is the thermal runaway signal, the steps of controlling the fire fighting system to convey the fire fighting medium to the battery pack and controlling the heat exchange system to convey the cold heat exchange medium to the battery pack comprise:
and if the detection signal is the thermal runaway signal, controlling the fire fighting system to convey fire fighting media to the battery pack corresponding to the thermal runaway signal and controlling the heat exchange system to convey cold heat exchange media to all the battery packs.
In an alternative embodiment, the method for controlling the heat exchange system to deliver cold heat exchange medium to the battery pack comprises:
and controlling the heat exchange system to convey cold heat exchange medium to the battery pack at the maximum refrigeration power.
In an optional embodiment, the energy storage cabinet further includes a switch module, the switch module is connected to the battery pack, and the switch module is configured to charge and discharge the battery pack;
the control method further comprises the following steps:
and if the detection signal is the thermal runaway signal, controlling the switch module to stop charging and discharging the battery pack.
In an alternative embodiment, the thermal runaway signal is indicative of an operating parameter of the battery pack exceeding a preset threshold.
In alternative embodiments, the operating parameters of the battery pack include temperature, rate of temperature change, smoke, carbon monoxide concentration, and volatile organic compound concentration;
the preset threshold values comprise a temperature preset threshold value, a temperature change rate preset threshold value, a smoke degree preset threshold value, a carbon monoxide concentration preset threshold value and a volatile organic compound concentration preset threshold value corresponding to the temperature, the temperature change rate, the smoke degree, the carbon monoxide concentration and the volatile organic compound concentration;
the thermal runaway signal represents that at least one of the temperature, the temperature change rate, the smoke intensity, the carbon monoxide concentration and the volatile organic compound concentration of the battery pack exceeds the corresponding preset threshold.
In an alternative embodiment, the thermal runaway signal is indicative of at least two of the temperature, the rate of change of temperature, the smoke level, the carbon monoxide concentration, and the volatile organic compound concentration of the battery pack exceeding corresponding preset thresholds.
In a second aspect, the invention provides a thermal runaway control device for a battery pack, which is applied to an energy storage cabinet and comprises a receiving module, a judging module and a control module, wherein the receiving module is connected with the judging module, and the judging module is connected with the control module;
the receiving module is used for receiving a detection signal and sending the detection signal to the judging module, and the detection signal represents the running state of the battery pack;
the judging module is used for judging whether the detection signal is a thermal runaway signal;
the control module is used for controlling the fire-fighting system to convey fire-fighting media to the battery pack and controlling the heat exchange system to convey cold heat exchange media to the battery pack when the detection signal is the thermal runaway signal.
In a third aspect, the present invention provides an energy storage cabinet, including a memory and a processor, where the memory stores a computer program, and the processor is configured to execute the computer program to implement the steps of the battery pack thermal runaway control method described in any one of the foregoing embodiments.
In a fourth aspect, the present invention provides a storage medium having stored thereon a computer program which, when executed by a processor, is operable to carry out the steps of the battery pack thermal runaway control method according to any one of the preceding embodiments.
The battery pack thermal runaway control method, the control device, the energy storage cabinet and the storage medium provided by the embodiment of the invention have the beneficial effects that:
this application passes through the pipeline intercommunication with fire extinguishing system and heat transfer system respectively with the battery package, obtains the running state of battery package through receiving the detection signal, and control fire extinguishing system carries fire-fighting medium and control heat transfer system to carry cold heat transfer medium to the battery package when judging that the detection signal is the thermal runaway signal to the battery package. Utilize the fire control medium can avoid the battery package to catch fire, perhaps put out the ignition in the battery package, utilize heat transfer system to carry the heat that cold heat transfer medium can be quick takes away the battery package, the heat of having avoided the battery package gathers further to cause thermal runaway and stretch. The fire-fighting system is controlled to extinguish fire or inhibit the generation of open fire and the heat of the battery pack is taken away in a mode of cooling through the heat exchange system, so that the thermal runaway and the spread of the battery pack are inhibited, and the expansion of loss caused by fire explosion accidents when the thermal runaway and the spread of the battery pack are caused is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of an energy storage cabinet according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for controlling thermal runaway of a battery pack according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating sub-steps S310 and S410 of a thermal runaway control method for a battery pack according to an embodiment of the present invention;
fig. 4 is a flowchart of a battery pack thermal runaway control method substep S411 according to an embodiment of the present invention;
fig. 5 is a connection block diagram of a thermal runaway control device for a battery pack according to an embodiment of the invention.
Icon: 100-an energy storage cabinet; 110-a cabinet body; 120-a battery pack; 121-a cooling plate; 123-an accommodating space; 130-a fire protection system; 140-a heat exchange system; 150-a sensor assembly; 160-a switch module; 300-battery pack thermal runaway control device; 310-a receiving module; 330-a judgment module; 350-control module.
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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
In the prior art, when a battery pack is under abuse conditions such as overheating, overcharging and short-circuiting, thermal runaway and spreading can occur in the battery due to heat accumulation, and further fire and explosion accidents are caused.
In order to solve the above technical problems, embodiments of the present invention provide a battery pack thermal runaway control method, a control apparatus, an energy storage cabinet, and a storage medium, which can suppress thermal runaway and propagation of a battery pack 120 when the battery pack is thermally runaway, so as to avoid loss expansion caused by a fire explosion accident when the battery pack is thermally runaway and propagated.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The embodiment of the invention provides a thermal runaway control method and device for a battery pack, an energy storage cabinet and a storage medium. The battery pack thermal runaway control method, the control device and the storage medium are applied to the energy storage cabinet. The energy storage cabinet comprises a memory and a processor. The memory stores a computer program, and the processor is used for executing the computer program to realize the steps of the battery pack thermal runaway control method.
In one possible embodiment, the processor may be an integrated circuit chip having signal processing capabilities. The processor may be a general-purpose processor, and may include a Central Processing Unit (CPU), a single chip Microcomputer (MCU), a Micro Controller Unit (MCU), a Complex Programmable Logic Device (CPLD), a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an embedded ARM, and other chips, where the processor may implement or execute each method, step, and Logic block disclosed in the embodiments of the present invention. The Memory may be a stand-alone external Memory including, but not limited to, Random Access Memory (RAM), Read Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Read-Only Memory (EPROM), electrically Erasable Read-Only Memory (EEPROM). The memory may also be integral with the processor, e.g., the memory may be integral with the processor within the same chip.
Referring to fig. 1, in the present embodiment, the energy storage cabinet 100 includes a cabinet 110, and a battery pack 120, a fire fighting system 130, and a heat exchange system 140 disposed in the cabinet 110. The fire fighting system 130 and the heat exchange system 140 are respectively communicated with the battery pack 120 through pipes (not shown). The fire protection system 130 is used to deliver fire protection media to the cabinet 110 and the battery pack 120. The heat exchange system 140 is used to deliver a heat exchange medium to the battery pack 120.
In this embodiment, the processor (not shown) is connected to the fire fighting system 130 and the heat exchanging system 140, respectively. The processor may control the fire protection system 130 to operate and shut down. The processor may also control the operation and shutdown of the heat exchange system 140 and control the mode of operation of the heat exchange system 140.
In the present embodiment, the battery pack 120 includes a casing and a battery core (not shown). The housing is rectangular, and includes a cooling plate 121, a side plate (not shown) mounted around the cooling plate 121, and a top plate (not shown) surrounding the top of the side plate. The cooling plate 121, the side plates and the top plate enclose an accommodating space 123. The battery cell is installed in the accommodating space 123 and attached to the cooling plate 121. A cooling flow channel is arranged in the cooling plate 121, and the heat exchange system 140 is communicated with the cooling flow channel through a pipeline. When the battery pack 120 is used normally, the heat exchange system 140 is used to heat and cool the battery cell to provide a stable operating environment for the battery cell. The fire fighting system 130 is communicated with the accommodating space 123 through a pipeline.
Referring to fig. 2, based on the energy storage cabinet 100, the thermal runaway control method for the battery pack 120 provided in the embodiment is used to suppress thermal runaway and spread of the battery pack 120. The thermal runaway control method for the battery pack 120 may include the steps of:
step S100, receiving a probe signal. The detection signal characterizes an operational state of the battery pack 120.
In the present embodiment, the detection signals are detected and processed by the sensor assembly 150 disposed in the battery pack 120, and the detection signals include at least a thermal runaway signal and a normal operation signal (i.e., a thermal runaway signal does not occur).
And step S200, judging whether the detection signal is a thermal runaway signal.
In this embodiment, the thermal runaway signal indicates that the operating parameter of the battery pack 120 exceeds a preset threshold. In the present embodiment, the operating parameters of the battery pack 120 include temperature, temperature change rate, smoke, carbon monoxide concentration, and volatile organic compound concentration. The preset threshold values comprise a temperature preset threshold value, a temperature change rate preset threshold value, a smoke degree preset threshold value, a carbon monoxide concentration preset threshold value and a volatile organic compound concentration preset threshold value corresponding to the temperature, the temperature change rate, the smoke degree, the carbon monoxide concentration and the volatile organic compound concentration. The thermal runaway signal indicates that at least two of the temperature, the temperature change rate, the smoke intensity, the carbon monoxide concentration, and the volatile organic compound concentration of the battery pack 120 exceed corresponding preset thresholds.
In this embodiment, energy storage cabinet 100 further includes a sensor assembly 150. The sensor assembly 150 is installed in the accommodating space 123 and is used for acquiring an operating parameter of the battery pack 120 to obtain a detection signal. For example, if the sensor assembly 150 detects that the temperature exceeds the preset temperature threshold and the smoke level exceeds the preset smoke level threshold at the same time, the sensor assembly 150 determines that the battery pack 120 is in thermal runaway, and sends a thermal runaway signal. When at most one of the temperature, the temperature change rate, the smoke intensity, the carbon monoxide concentration and the volatile organic compound concentration of the battery pack 120 exceeds a corresponding preset threshold value, the sensor assembly 150 determines that the battery pack 120 is normally operated, and then sends a normal operation signal.
In other embodiments of the present application, the thermal runaway signal may also indicate that at least one of the temperature, the rate of change of temperature, the smoke level, the carbon monoxide concentration, and the voc concentration of the battery pack 120 exceeds a corresponding predetermined threshold. For example, if the temperature change rate exceeds a preset temperature change rate threshold, the sensor assembly 150 determines that the thermal runaway signal occurs in the battery pack 120 and sends the thermal runaway signal. When all the operating parameters of the battery pack 120 do not exceed the corresponding preset threshold values, the sensor assembly 150 determines that the battery pack 120 operates normally, and sends a normal operation signal.
In the present embodiment, the sensor assembly 150 includes a temperature sensor (not shown), a smoke detection sensor (not shown), a carbon monoxide concentration detection sensor (not shown), a voc concentration detection sensor (not shown), and a processing module (not shown). Temperature sensor, smoke intensity detection sensor, carbon monoxide concentration detection sensor and volatile organic compound concentration detection sensor all are connected with processing module, and processing module is connected with the treater.
In this embodiment, the processing module is configured to calculate a temperature change rate according to a temperature value obtained by the temperature sensor. The processing module is also used for comparing whether the temperature, the temperature change rate, the smoke intensity, the carbon monoxide concentration and the volatile organic compound concentration exceed the corresponding temperature preset threshold, temperature change rate preset threshold, smoke intensity preset threshold, carbon monoxide concentration preset threshold and volatile organic compound concentration preset threshold. The processing module is also used for judging whether the temperature, the temperature change rate, the smoke intensity, the carbon monoxide concentration and the volatile organic compound concentration exceed the corresponding temperature preset threshold value, the temperature change rate preset threshold value, the smoke intensity preset threshold value, the carbon monoxide concentration preset threshold value and the volatile organic compound concentration preset threshold value and judging the number of the temperature, the temperature change rate, the smoke intensity, the carbon monoxide concentration and the volatile organic compound concentration which exceed the corresponding temperature preset threshold value, the temperature change rate preset threshold value, the smoke intensity preset threshold value, the carbon monoxide concentration preset threshold value and the volatile organic compound concentration preset threshold value. For example, if the temperature exceeds the preset temperature threshold and the temperature change rate exceeds the preset temperature change rate threshold, the processing module determines that the two operating parameters exceed the preset threshold. The processing module is also used for sending a thermal runaway signal to the processor when two or more than two operating parameters exceed a preset threshold value, and sending a normal operating signal to the processor when one operating parameter exceeds a corresponding preset threshold value or none of the operating parameters exceed the preset threshold value.
In this embodiment, the processing module and the processor are two independent processing computing modules. In other embodiments of the present application, the processor and the processing module may be integrated into a single processing computing module.
In this embodiment, the preset temperature threshold corresponding to the temperature in the operation parameters of the battery pack 120 is any one of 50 ℃ to 80 ℃, and the preferred preset temperature threshold is 65 ℃. The preset threshold value of the temperature change rate corresponding to the temperature change rate is any value of 3 ℃/min-5 ℃/min, and preferably the preset threshold value of the temperature change rate is 3 ℃/min. The preset carbon monoxide threshold corresponding to the carbon monoxide concentration is any one of 5% LEL to 15% LEL, and preferably the carbon monoxide concentration is 10% LEL. The preset smoke intensity threshold corresponding to the smoke intensity is 5-15% obs/m, and is optimized to 10% obs/m. The preset threshold of the concentration of the volatile organic compound corresponding to the concentration of the volatile organic compound is any one of 5% LEL to 15% LEL, and preferably the preset threshold of the concentration of the volatile organic compound is 10% LEL.
Referring to fig. 2, in step S300, if the detection signal is the thermal runaway signal, the fire fighting system 130 is controlled to deliver a fire fighting medium to the battery pack 120.
Step S400, if the detection signal is the thermal runaway signal, the heat exchange system 140 is controlled to deliver cold heat exchange medium to the battery pack 120.
In the present embodiment, step S300 and step S400 are performed simultaneously. In other embodiments of the present application, step S300 and step S400 may also be performed sequentially. For example, when the detection signal is a thermal runaway signal, the heat exchange system 140 is controlled to deliver cold heat exchange medium to the battery pack 120, and after a certain preset time, the fire protection system 130 is controlled to deliver fire protection medium to the battery pack 120 under the condition that the detection signal is also a thermal runaway signal.
In this embodiment, the fire fighting system 130 and the heat exchange system 140 are respectively communicated with the battery pack 120 through pipelines, the operating state of the battery pack 120 is obtained by receiving the detection signal, and when the detection signal is determined to be the thermal runaway signal, the fire fighting system 130 is controlled to convey the fire fighting medium to the battery pack 120 and the heat exchange system 140 is controlled to convey the cold heat exchange medium to the battery pack 120. The fire-fighting medium can be used for preventing the battery pack 120 from being on fire or extinguishing a fire point in the battery pack 120, the heat exchange system 140 is used for conveying the cold heat exchange medium to quickly take away the heat of the battery pack 120, and the heat accumulation of the battery pack 120 is avoided to further cause the battery to be on fire and thermal runaway and spread. The fire extinguishing system 130 is controlled to extinguish fire or inhibit the generation of open fire and the heat of the battery pack 120 is taken away in a mode of cooling through the heat exchange system 140, so that the thermal runaway and spread of the battery pack 120 are inhibited, and the expansion of loss caused by fire and explosion accidents when the thermal runaway and spread of the battery pack 120 occur is avoided.
Referring to fig. 1 and 3, in the present embodiment, there are a plurality of battery packs 120. The plurality of battery packs 120 are respectively connected with the fire fighting system 130 and the heat exchange system 140 through pipes. Step S100 includes the following substep S110, step S300 includes the following substep S310, and step S400 includes the following substep S410.
In step S110, the detection signals of the plurality of battery packs 120 are received. The detection signals include a plurality of groups, and the plurality of groups of detection signals correspond to the plurality of battery packs 120 one to one.
Step S310, if the detection signal is the thermal runaway signal, controlling the fire fighting system 130 to convey a fire fighting medium to the battery pack 120 corresponding to the thermal runaway signal;
step S410, if the detection signal is the thermal runaway signal, controlling the heat exchange system 140 to deliver cold heat exchange medium to all the battery packs 120.
The embodiment can only deliver the fire-fighting medium to the battery pack 120 with thermal runaway by controlling the fire-fighting system 130, and the battery pack 120 with thermal runaway or thermal spread can be put out a fire or be inhibited from producing open fire by using the fire-fighting medium, so that the range of thermal runaway and thermal spread is prevented from being enlarged, and meanwhile, the fire-fighting medium can be saved, and the battery pack 120 without thermal runaway or thermal spread can not be damaged and influenced by the fire-fighting medium, thereby minimizing the loss. The heat exchange system 140 is controlled to convey cold heat exchange media to all the battery packs 120, so that the temperature of all the battery packs 120 can be reduced, and the heat of all the battery packs 120 can be transferred away, thereby avoiding thermal runaway and thermal spread of other batteries caused by the influence of the thermal runaway and thermal spread of the battery packs 120 on other battery packs 120, and further reducing the loss range.
Referring to fig. 4, in the present embodiment, in order to make the heat exchange system 140 have a better effect, the step S410 includes the following sub-step S411.
In step S411, the heat exchange system 140 is controlled to deliver cold heat exchange medium to all the battery packs 120 at the maximum cooling power.
In this embodiment, the temperature of the heat exchange medium is lower by controlling the heat exchange system 140 to deliver the heat exchange medium to the battery pack 120 at the maximum refrigeration power, so that better heat can be taken away in the circulation process, and thermal runaway and spreading of the battery pack 120 can be better suppressed.
Referring to fig. 1 and fig. 2, in the embodiment, the energy storage cabinet 100 further includes a switch module 160, the switch module 160 is connected to all the battery packs 120, and the switch module 160 is used for charging and discharging the battery packs 120.
The method for controlling thermal runaway of the battery pack 120 further includes the following step S500:
in step S500, if the detection signal is a thermal runaway signal, the switch module 160 is controlled to stop charging and discharging the battery pack 120.
Because the battery pack 120 generates heat in the charging and discharging processes and the battery pack 120 causes a circuit short circuit or battery thermal runaway and spread caused by the short circuit of the circuit when thermal runaway and thermal spread occur, the present embodiment controls the switch module 160 to stop charging and discharging the battery pack 120 when the thermal runaway occurs in the battery pack 120, so that the generation of heat generated by the operation of the battery pack 120 can be reduced, all the battery packs 120 can be isolated on the circuit, and the mutual influence of a plurality of battery packs 120 on the circuit is avoided.
In the present embodiment, step S500 and steps S300 and S400 are performed simultaneously. In other embodiments of the present application, step S500 and steps S300 and S400 may not be performed simultaneously. For example, when the thermal runaway of the battery pack 120 occurs, the steps S400 and S500 are performed at the same time, and when the thermal runaway of the battery continues to occur after a preset time elapses, the step S300 is performed again.
Referring to fig. 1 and fig. 5, in order to execute possible steps of the method for controlling the thermal runaway of the battery pack provided in the above embodiment, an embodiment of the invention provides a device 300 for controlling the thermal runaway of the battery pack, which is applied to an energy storage cabinet 100 and is used for executing the method for controlling the thermal runaway of the battery pack 120. It should be noted that the basic principle and the generated technical effects of the control device for thermal runaway of the battery pack 120 provided by the embodiment of the present invention are substantially the same as those of the above embodiment, and for brief description, no mention is made in this embodiment, and reference may be made to the corresponding contents in the above embodiment.
In this embodiment, the apparatus 300 for controlling thermal runaway of a battery pack includes a receiving module 310, a determining module 330 and a control module 350. The receiving module 310 is connected to the determining module 330, and the determining module 330 is connected to the controlling module 350.
The receiving module 310 is configured to receive a detection signal, and send the detection signal to the determining module 330, where the detection signal represents an operating state of the battery pack 120.
Optionally, the receiving module 310 may be configured to execute S100 and its sub-steps in the respective step diagrams of the thermal runaway control method for the battery pack 120. To achieve a corresponding technical effect.
The determining module 330 is used for determining whether the detection signal is a thermal runaway signal.
Alternatively, the determining module 330 may be configured to execute S200 and the sub-steps thereof in the respective step diagrams of the thermal runaway control method for the battery pack 120. To achieve a corresponding technical effect.
The control module 350 is configured to control the fire protection system 130 to deliver the fire protection medium to the battery pack 120 and control the heat exchange system 140 to deliver the cold heat exchange medium to the battery pack 120 when the detection signal is the thermal runaway signal.
Alternatively, the determining module 330 may be configured to execute the sub-steps of S300, S400, and S500 and the sub-steps of S300, S400, and S500 in the step diagrams of the thermal runaway control method for the battery pack 120. To achieve a corresponding technical effect.
In summary, in the embodiment, the fire protection system 130 and the heat exchange system 140 are respectively communicated with the battery pack 120 through pipelines, the operating state of the battery pack 120 is obtained by receiving the detection signal, when the detection signal is determined to be the thermal runaway signal, the fire protection system 130 is controlled to convey the fire protection medium to the battery pack 120, the heat exchange system 140 is controlled to convey the cold heat exchange medium to the battery pack 120, and the switch module 160 is controlled to stop charging and discharging the battery pack 120, so that the fire protection medium can be used to prevent the battery pack 120 from being ignited, or fire points in the battery pack 120 are extinguished, the heat of the battery pack 120 can be rapidly taken away by conveying the cold heat exchange medium through the heat exchange system 140, the heat accumulation of the battery pack 120 is further prevented from causing the thermal runaway and spreading, and the switch module 160 is used to control the charging and discharging of the battery, so as to reduce the generation of heat of the battery pack 120. The thermal runaway and spread of the battery pack 120 are better inhibited by the way of controlling the fire protection system 130, the heat exchange system 140 and the switch module 160 to cooperate to cut off circuit connection, extinguish fire or inhibit the generation of open fire and reduce temperature on the whole, and the expansion of loss caused by fire and explosion accidents when the thermal runaway and spread of the battery pack 120 occur is avoided.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules 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 may be embodied in the form of a software product, which is stored in a storage medium and includes 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 removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A battery pack thermal runaway control method is applied to an energy storage cabinet and is characterized in that the energy storage cabinet comprises a battery pack, a fire fighting system and a heat exchange system, the fire fighting system and the heat exchange system are respectively communicated with the battery pack through pipelines, and the control method comprises the following steps:
receiving a detection signal, wherein the detection signal represents the running state of the battery pack;
judging whether the detection signal is a thermal runaway signal or not;
and if the detection signal is the thermal runaway signal, controlling the fire-fighting system to convey the fire-fighting medium to the battery pack and controlling the heat exchange system to convey the cold heat exchange medium to the battery pack.
2. The method for controlling thermal runaway of a battery pack according to claim 1, wherein the number of the battery packs comprises a plurality;
the step of receiving a probe signal comprises:
receiving detection signals of a plurality of battery packs, wherein the detection signals comprise a plurality of groups, and the plurality of groups of detection signals correspond to the plurality of battery packs one to one;
if the detection signal is the thermal runaway signal, the steps of controlling the fire fighting system to convey the fire fighting medium to the battery pack and controlling the heat exchange system to convey the cold heat exchange medium to the battery pack comprise:
and if the detection signal is the thermal runaway signal, controlling the fire fighting system to convey fire fighting media to the battery pack corresponding to the thermal runaway signal and controlling the heat exchange system to convey cold heat exchange media to all the battery packs.
3. The battery pack thermal runaway control method of claim 1, wherein the method for controlling the heat exchange system to deliver cold heat exchange medium to the battery pack comprises:
and controlling the heat exchange system to convey cold heat exchange medium to the battery pack at the maximum refrigeration power.
4. The method for controlling the thermal runaway of the battery pack according to claim 1, wherein the energy storage cabinet further comprises a switch module, the switch module is connected with the battery pack, and the switch module is used for charging and discharging the battery pack;
the control method further comprises the following steps:
and if the detection signal is the thermal runaway signal, controlling the switch module to stop charging and discharging the battery pack.
5. The method of claim 1, wherein the thermal runaway signal indicates that an operating parameter of the battery pack exceeds a predetermined threshold.
6. The method of claim 5, wherein the operating parameters of the battery pack include temperature, rate of temperature change, smoke, carbon monoxide concentration, and volatile organic compound concentration;
the preset threshold values comprise a temperature preset threshold value, a temperature change rate preset threshold value, a smoke degree preset threshold value, a carbon monoxide concentration preset threshold value and a volatile organic compound concentration preset threshold value corresponding to the temperature, the temperature change rate, the smoke degree, the carbon monoxide concentration and the volatile organic compound concentration;
the thermal runaway signal represents that at least one of the temperature, the temperature change rate, the smoke intensity, the carbon monoxide concentration and the volatile organic compound concentration of the battery pack exceeds the corresponding preset threshold.
7. The method as claimed in claim 6, wherein the thermal runaway signal is indicative of at least two of the temperature, the temperature change rate, the smoke level, the carbon monoxide concentration, and the VOC concentration of the battery pack exceeding corresponding predetermined thresholds.
8. A battery pack thermal runaway control device is applied to an energy storage cabinet and is characterized in that the energy storage cabinet comprises a battery pack, a fire fighting system and a heat exchange system, wherein the fire fighting system and the heat exchange system are respectively communicated with the battery pack through pipelines;
the battery pack thermal runaway control device comprises a receiving module, a judging module and a control module, wherein the receiving module is connected with the judging module, and the judging module is connected with the control module;
the receiving module is used for receiving a detection signal and sending the detection signal to the judging module, and the detection signal represents the running state of the battery pack;
the judging module is used for judging whether the detection signal is a thermal runaway signal;
the control module is used for controlling the fire-fighting system to convey fire-fighting media to the battery pack and controlling the heat exchange system to convey cold heat exchange media to the battery pack when the detection signal is the thermal runaway signal.
9. An energy storage cabinet, characterized by comprising a memory and a processor, wherein the memory stores a computer program, and the processor is used for executing the computer program to realize the steps of the battery pack thermal runaway control method according to any one of claims 1-7.
10. A storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, is adapted to perform the steps of the battery pack thermal runaway control method according to any of claims 1-7.
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Application publication date: 20211217 |