Quick charging protection method of energy storage device and related device

Abstract

The embodiment of the invention relates to the technical field of data processing, and provides a rapid charging protection method for an energy storage device and a related device, and the method comprises the steps: obtaining first battery temperature data of an energy storage battery pack cell and second battery temperature data of a battery monitoring assembly when an energy storage battery charging signal is received; determining a battery thermal runaway early warning area according to the first battery temperature data and the second battery temperature data; acquiring third battery temperature data of the battery thermal runaway early warning area; determining thermal runaway prevention expansion pretightening force according to the third battery temperature data; adjusting the battery cell pre-tightening force of the battery thermal runaway early warning area to the thermal runaway prevention expansion pre-tightening force, and obtaining fourth battery temperature data; and determining a battery cooling strategy according to the fourth battery temperature data. The pre-tightening force of the battery cell can be adjusted according to the temperature data of the energy storage battery pack, the thermal runaway of the battery is inhibited, and the safety is improved.

Description

Technical Field

[0001] The present application relates to the field of data processing technology, and in particular to a fast charging protection method for an energy storage device and a related device. Background Art

[0002] Lithium batteries are currently the main energy source for electric vehicles due to their high specific energy, low self-discharge rate and long cycle life. With the large-scale application of lithium batteries in electric vehicles, lithium battery safety accidents represented by thermal runaway occur from time to time. Thermal runaway accidents are usually manifested as a sudden rise in lithium battery temperature, smoke, fire, etc.

[0003] Battery thermal runaway is a condition in which the temperature of a battery rises abnormally due to internal or external factors during charging, which in turn triggers a runaway state of the chemical reaction inside the battery. During rapid charging, energy storage batteries are prone to thermal expansion, which may cause thermal runaway and low safety. Summary of the invention

[0004] The embodiment of the present application provides a fast charging protection method and related devices for an energy storage device, which can determine a battery thermal runaway warning area according to first battery temperature data of a battery cell of an energy storage battery pack and second battery temperature data of a battery monitoring component, and automatically adjust the thermal runaway prevention expansion preload to suppress thermal runaway phenomena that may occur in the battery during charging, thereby protecting the battery during the fast charging process of the energy storage battery.

[0005] A first aspect of an embodiment of the present application provides a fast charging protection method for an energy storage device, the method comprising:

[0006] When receiving a charging signal of the energy storage battery, obtaining first battery temperature data of the battery cell of the energy storage battery pack and second battery temperature data of the battery monitoring component;

[0007] Determining a battery thermal runaway warning area according to the first battery temperature data and the second battery temperature data;

[0008] Obtaining the third battery temperature data in the battery thermal runaway warning area;

[0009] determining a thermal runaway prevention expansion preload force according to the third battery temperature data;

[0010] Adjusting the cell preload force in the battery thermal runaway warning area to the thermal runaway prevention expansion preload force, and acquiring fourth battery temperature data;

[0011] A battery cooling strategy is determined according to the fourth battery temperature data.

[0012] In a possible implementation, determining the battery thermal runaway warning area according to the first battery temperature data and the second battery temperature data includes:

[0013] Performing anomaly detection on the first battery temperature data and the second battery temperature data to obtain an anomaly detection result;

[0014] If the abnormality detection result indicates that either the first battery temperature data or the second battery temperature data is abnormal, extracting the abnormal data in the first battery temperature data or the second battery temperature data as the fifth battery temperature data;

[0015] Extracting abnormal battery temperature data from the fifth battery temperature data, wherein the abnormal battery temperature data is data that determines that the battery cell temperature is greater than a preset maximum battery safety temperature.

[0016] A battery thermal runaway warning area is determined based on the abnormal battery temperature data.

[0017] In a possible implementation, determining the thermal runaway prevention expansion preload force according to the third battery temperature data includes:

[0018] extracting k abnormal battery temperature data from the third battery temperature data;

[0019] Determining a battery thermal runaway expansion force according to the k abnormal battery temperature data;

[0020] Obtaining the battery preload force in the battery thermal runaway warning area;

[0021] The thermal runaway prevention expansion preload force is determined according to the battery thermal runaway expansion force and the battery preload force.

[0022] In a possible implementation, determining the thermal runaway prevention expansion preload force according to the battery thermal runaway expansion force and the battery preload force includes:

[0023] Determining a safety margin of thermal runaway expansion force of the battery according to the thermal runaway expansion force of the battery;

[0024] According to the battery thermal runaway expansion force safety margin and the battery preload, the thermal runaway expansion preload is prevented.

[0025] In a possible implementation, determining a battery cooling strategy according to the fourth battery temperature data includes:

[0026] Determining the highest fourth battery temperature data and the lowest fourth battery temperature data according to the fourth battery temperature data;

[0027] determining a battery dew point temperature according to the highest fourth battery temperature data and the lowest fourth battery temperature data;

[0028] The fourth highest battery temperature data is compared with the battery dew point temperature, and when the highest battery temperature reaches the battery dew point temperature, the battery dehumidifier is started.

[0029] In this example, the battery thermal runaway warning area is determined by first battery temperature data and second battery temperature data obtained when receiving the energy storage battery charging signal, and then the battery cell preload force in the battery thermal runaway warning area is adjusted according to the third battery temperature data of the battery thermal runaway warning area, so that the thermal runaway phenomenon that may occur during the rapid charging of the energy storage battery is suppressed by means of preload force, thereby protecting the battery during the rapid charging of the energy storage battery, so as to solve the problem that the battery cells of the existing energy storage battery may expand due to heat during the rapid charging process, which may cause adjacent batteries to squeeze each other and cause battery thermal runaway.

[0030] A second aspect of an embodiment of the present application provides a fast charging protection device for an energy storage device, the device comprising:

[0031] A first acquisition unit, configured to acquire first battery temperature data of the energy storage battery pack cell and second battery temperature data of the battery monitoring component when receiving a charging signal of the energy storage battery;

[0032] a first processing unit, configured to determine a battery thermal runaway warning area according to the first battery temperature data and the second battery temperature data;

[0033] A second acquisition unit, used to acquire temperature data of a third battery in a battery thermal runaway warning area;

[0034] a second processing unit, configured to determine a thermal runaway prevention expansion preload according to the third battery temperature data;

[0035] a third processing unit, configured to adjust the cell preload force in the battery thermal runaway warning area to the thermal runaway prevention expansion preload force, and obtain fourth battery temperature data;

[0036] The fourth processing unit is used to determine a battery cooling strategy according to the fourth battery temperature data.

[0037] In a possible implementation, in the aspect of determining the battery thermal runaway warning area according to the first battery temperature data and the second battery temperature data, the first processing unit is configured to:

[0038] Performing anomaly detection on the first battery temperature data and the second battery temperature data to obtain an anomaly detection result;

[0039] If the abnormality detection result indicates that either the first battery temperature data or the second battery temperature data is abnormal, extracting the abnormal data in the first battery temperature data or the second battery temperature data as the fifth battery temperature data;

[0040] Extracting abnormal battery temperature data from the fifth battery temperature data, wherein the abnormal battery temperature data is data that determines that the battery cell temperature is greater than a preset maximum battery safety temperature.

[0041] A battery thermal runaway warning area is determined based on the abnormal battery temperature data.

[0042] In a possible implementation, in the aspect of determining the thermal runaway prevention expansion preload force according to the third battery temperature data, the second processing unit is used to:

[0043] extracting k abnormal battery temperature data from the third battery temperature data;

[0044] Determining a battery thermal runaway expansion force according to the k abnormal battery temperature data;

[0045] Obtaining the battery preload force in the battery thermal runaway warning area;

[0046] The thermal runaway prevention expansion preload force is determined according to the battery thermal runaway expansion force and the battery preload force.

[0047] In a possible implementation, in the aspect of determining the thermal runaway prevention expansion preload force according to the battery thermal runaway expansion force and the battery preload force, the second processing unit is used to:

[0048] Determining a safety margin of thermal runaway expansion force of the battery according to the thermal runaway expansion force of the battery;

[0049] According to the battery thermal runaway expansion force safety margin and the battery preload, the thermal runaway expansion preload is prevented.

[0050] In a possible implementation, in the aspect of determining the battery cooling strategy according to the fourth battery temperature data, the fourth processing unit is configured to:

[0051] Determining the highest fourth battery temperature data and the lowest fourth battery temperature data according to the fourth battery temperature data;

[0052] determining a battery dew point temperature according to the highest fourth battery temperature data and the lowest fourth battery temperature data;

[0053] The fourth highest battery temperature data is compared with the battery dew point temperature, and when the highest battery temperature reaches the battery dew point temperature, the battery dehumidifier is started.

[0054] A third aspect of an embodiment of the present application provides a terminal, comprising a processor, an input device, an output device and a memory, wherein the processor, input device, output device and memory are interconnected, wherein the memory is used to store a computer program, the computer program comprises program instructions, and the processor is configured to call the program instructions to execute the step instructions of the fast charging protection method of the energy storage device in the first aspect of the embodiment of the present application.

[0055] A fourth aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the steps described in the fast charging protection method for an energy storage device in the first aspect of the embodiment of the present application.

[0056] The fifth aspect of the embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute some or all of the steps described in the fast charging protection method for an energy storage device in the first aspect of the embodiment of the present application. The computer program product may be a software installation package. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0058] Figure 1 A schematic diagram of the overall process of a fast charging protection method for an energy storage device is provided for an embodiment of the present application;

[0059] Figure 2 A schematic structural diagram of a fast charging protection device for an energy storage device is provided for an embodiment of the present application;

[0060] Figure 3 A schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0061] Reference numerals:

[0062] 1-first acquisition unit, 2-first processing unit, 3-second acquisition unit, 4-second processing unit, 5-third processing unit, 6-fourth processing unit. DETAILED DESCRIPTION

[0063] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0064] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0065] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0066] In order to better understand a business product determination method provided by an embodiment of the present application, the following first briefly introduces the scenario of applying the fast charging protection method of the energy storage device. When the energy storage battery is fast charged, if the heat inside the battery cannot be effectively dissipated, and the battery temperature rises, the battery will expand thermally and cause the batteries between the battery packs to squeeze each other. When the battery is squeezed, especially the sharper and narrower the shape of the extrusion head, the temperature of the lithium battery will rise rapidly. The closer the extrusion position is to the bottom edge of the lithium battery, the higher the temperature rise, the more likely thermal runaway will occur, and the safety is low.

[0067] The fast charging protection method of the energy storage device is applied to the fast charging protection device of the energy storage device. Figure 1 The overall flow chart of a fast charging protection method for an energy storage device is shown. Figure 1 As shown, including:

[0068] S1. When receiving a charging signal of an energy storage battery, obtaining first battery temperature data of a cell of an energy storage battery pack and second battery temperature data of a battery monitoring component.

[0069] Among them, the first battery temperature data can be measured by a temperature sensor built into the battery temperature, and the second battery temperature data can be obtained by a fire protection component in the battery monitoring component, and the fire protection component is used to perform gas cooling on the battery cell.

[0070] S2. Determine a battery thermal runaway warning area according to the first battery temperature data and the second battery temperature data.

[0071] Among them, the battery thermal runaway warning area can be a battery area where thermal runaway may occur. It should be noted that the energy storage battery in this example is a battery cell pack, which is divided into n battery cell batteries. These batteries are arranged adjacent to each other. Among the n total batteries, every k batteries are divided into a group. Each group is provided with a battery temperature sensor and a battery monitoring component. The battery monitoring component includes a fire protection component and a warning component.

[0072] In this example, the first battery temperature data and the second battery temperature data are subjected to abnormality detection, and according to the abnormality detection result, a battery area where thermal runaway may occur is determined as a battery thermal runaway warning area.

[0073] S3. Acquire temperature data of a third battery in a battery thermal runaway warning area.

[0074] The third battery temperature data is the temperature of all battery cells in the battery thermal runaway warning area, including battery temperatures with abnormal temperatures and normal battery temperatures that are not affected by thermal runaway.

[0075] S4. Determine a thermal runaway prevention expansion preload force according to the third battery temperature data.

[0076] In this example, the preload force of the battery is calculated based on the abnormal temperature and the normal temperature in the third battery temperature, so as to determine the anti-thermal runaway expansion preload force that can suppress the thermal runaway expansion of the battery, thereby suppressing the thermal runaway and protecting the battery.

[0077] S5. Adjust the cell preload force in the battery thermal runaway warning area to the thermal runaway prevention expansion preload force, and obtain fourth battery temperature data.

[0078] In this example, after the preload force of the battery is adjusted, the battery temperature data after the preload force adjustment is obtained to observe whether the battery temperature data continues to increase. If the battery temperature data continues to increase and exceeds the safety threshold, step S6 is performed.

[0079] S6. Determine a battery cooling strategy according to the fourth battery temperature data.

[0080] In this example, the battery pack can be cooled by air cooling and liquid cooling. Air cooling uses air as the medium for cooling, and liquid cooling uses water as the medium for cooling. Liquid cooling completes the liquid cooling operation by passing the cooling water medium of the liquid cooling plate.

[0081] In this example, the battery thermal runaway warning area is determined by first battery temperature data and second battery temperature data obtained when receiving the energy storage battery charging signal, and then the battery cell preload force in the battery thermal runaway warning area is adjusted according to the third battery temperature data of the battery thermal runaway warning area, so that the thermal runaway phenomenon that may occur during the rapid charging of the energy storage battery is suppressed by means of preload force, thereby protecting the battery during the rapid charging of the energy storage battery, so as to solve the problem that the battery cells of the existing energy storage battery may expand due to heat during the rapid charging process, which may cause adjacent batteries to squeeze each other and cause battery thermal runaway.

[0082] In a possible implementation, the method for determining a battery thermal runaway warning area according to the first battery temperature data and the second battery temperature data includes:

[0083] S201, performing anomaly detection on the first battery temperature data and the second battery temperature data to obtain an anomaly detection result;

[0084] S202, if the abnormality detection result indicates that either the first battery temperature data or the second battery temperature data is abnormal, extracting the abnormal data in the first battery temperature data or the second battery temperature data as fifth battery temperature data;

[0085] S203, extracting abnormal battery temperature data from the fifth battery temperature data, wherein the abnormal battery temperature data is data that determines that the battery cell temperature is greater than a preset maximum battery safety temperature.

[0086] S204: Determine a battery thermal runaway warning area according to the abnormal battery temperature data.

[0087] Among them, the method of abnormality detection can be to compare the first battery temperature data and the second battery temperature data with a preset first safety threshold respectively, and when the temperature value of the first battery temperature data and / or the second battery temperature data exceeds the first safety threshold, confirm the abnormality detection result.

[0088] In this example, first, based on the abnormal detection results of the first battery temperature data and the second battery temperature data, the abnormal battery temperature data is confirmed, and then the abnormal battery temperature data is determined to be the fifth battery temperature data. Then, based on the fifth battery temperature data, the area corresponding to the corresponding battery pack is determined to be the battery thermal runaway warning area.

[0089] In a possible implementation, the method for determining the thermal runaway prevention expansion preload force according to the third battery temperature data includes:

[0090] S401, extracting k abnormal battery temperature data from the third battery temperature data;

[0091] S402, determining a battery thermal runaway expansion force according to the k abnormal battery temperature data;

[0092] S403, obtaining the battery preload force in the battery thermal runaway warning area;

[0093] S404: Determine the thermal runaway prevention expansion preload force according to the battery thermal runaway expansion force and the battery preload force.

[0094] In this example, the abnormal battery temperature data in the third battery temperature data is first extracted, and then the corresponding battery thermal runaway expansion force is determined by a table lookup method based on the abnormal battery temperature data, and then the battery preload force of the corresponding abnormal battery is obtained, and finally, based on the battery thermal runaway expansion force and the battery preload force, the thermal runaway prevention expansion preload force that can prevent further thermal expansion between the abnormal battery and the normal battery is determined.

[0095] In a possible implementation, the method for determining the thermal runaway prevention expansion preload force according to the battery thermal runaway expansion force and the battery preload force includes:

[0096] S4041. Determine a safety margin of thermal runaway expansion force of the battery according to the thermal runaway expansion force of the battery;

[0097] S4042. Prevent thermal runaway expansion preload according to the battery thermal runaway expansion force safety margin and the battery preload.

[0098] In this example, a thermal stress analysis can be performed on the thermal runaway expansion force of the abnormal battery, and the battery thermal runaway expansion force safety margin can be determined based on the safety expansion coefficient of the thermal runaway expansion force. Then, the battery thermal runaway expansion force safety margin and the battery preload force can be weighted summed to obtain the thermal runaway expansion preload force.

[0099] In a possible implementation, the method for determining a battery cooling strategy according to the fourth battery temperature data includes:

[0100] S601, determining the highest fourth battery temperature data and the lowest fourth battery temperature data according to the fourth battery temperature data;

[0101] S602, determining a battery dew point temperature according to the highest fourth battery temperature data and the lowest fourth battery temperature data;

[0102] S603: Compare the fourth highest battery temperature data with the battery dew point temperature, and when the highest battery temperature reaches the battery dew point temperature, start the battery dehumidifier.

[0103] In this example, based on the temperature matrix Tn[T1, T2, T3........Tm], the maximum battery temperature Tn_max and the minimum battery temperature Tn_min are obtained;

[0104] The battery dew point temperature Tn_RH is calculated based on the humidity parameter Hn and the battery minimum temperature Tn_min. It should be noted that the battery dew point temperature is the temperature when the air is cooled to saturation when the water vapor content and air pressure in the air do not change. That is, when the battery reaches the battery dew point temperature, the water vapor in the air begins to condense into dew or frost and adheres to the battery body. As a preferred solution of this embodiment, the battery dew point temperature Tn_RH is calculated by the following calculation formula:

[0105] Tn_RH=Tn_min-((100-Hn) / 5),

[0106] Among them, T n_RH Indicates the battery dew point temperature, H n Represents the relative humidity of the environment in the nth battery box, T n_min Indicates the minimum temperature of the battery cell in the nth battery box.

[0107] The battery maximum temperature Tn_max is compared with the battery dew point temperature Tn_RH. When the battery maximum temperature reaches the battery dew point temperature, the battery dehumidifier is started. When dew or frost may form on the outer surface of the battery, the battery dehumidifier is used to remove attachments, thereby drying the battery.

[0108] In line with the above, see Figure 2 , Figure 2 The present invention provides a schematic diagram of a fast charging protection device for an energy storage device. Figure 2 As shown, the device comprises:

[0109] A first acquisition unit, configured to acquire first battery temperature data of the energy storage battery pack cell and second battery temperature data of the battery monitoring component when receiving a charging signal of the energy storage battery;

[0110] a first processing unit, configured to determine a battery thermal runaway warning area according to the first battery temperature data and the second battery temperature data;

[0111] A second acquisition unit, used to acquire temperature data of a third battery in a battery thermal runaway warning area;

[0112] a second processing unit, configured to determine a thermal runaway prevention expansion preload according to the third battery temperature data;

[0113] a third processing unit, configured to adjust the cell preload force in the battery thermal runaway warning area to the thermal runaway prevention expansion preload force, and obtain fourth battery temperature data;

[0114] The fourth processing unit is used to determine a battery cooling strategy according to the fourth battery temperature data.

[0115] In a possible implementation, in the aspect of determining the battery thermal runaway warning area according to the first battery temperature data and the second battery temperature data, the first processing unit is configured to:

[0116] Performing anomaly detection on the first battery temperature data and the second battery temperature data to obtain an anomaly detection result;

[0117] If the abnormality detection result indicates that either the first battery temperature data or the second battery temperature data is abnormal, extracting the abnormal data in the first battery temperature data or the second battery temperature data as the fifth battery temperature data;

[0118] Extracting abnormal battery temperature data from the fifth battery temperature data, wherein the abnormal battery temperature data is data that determines that the battery cell temperature is greater than a preset maximum battery safety temperature.

[0119] A battery thermal runaway warning area is determined based on the abnormal battery temperature data.

[0120] In a possible implementation, in the aspect of determining the thermal runaway prevention expansion preload force according to the third battery temperature data, the second processing unit is used to:

[0121] extracting k abnormal battery temperature data from the third battery temperature data;

[0122] Determining a battery thermal runaway expansion force according to the k abnormal battery temperature data;

[0123] Obtaining the battery preload force in the battery thermal runaway warning area;

[0124] The thermal runaway prevention expansion preload force is determined according to the battery thermal runaway expansion force and the battery preload force.

[0125] In a possible implementation, in the aspect of determining the thermal runaway prevention expansion preload force according to the battery thermal runaway expansion force and the battery preload force, the second processing unit is used to:

[0126] Determining a safety margin of thermal runaway expansion force of the battery according to the thermal runaway expansion force of the battery;

[0127] According to the battery thermal runaway expansion force safety margin and the battery preload, the thermal runaway expansion preload is prevented.

[0128] In a possible implementation, in the aspect of determining the battery cooling strategy according to the fourth battery temperature data, the fourth processing unit is configured to:

[0129] Determining the highest fourth battery temperature data and the lowest fourth battery temperature data according to the fourth battery temperature data;

[0130] determining a battery dew point temperature according to the highest fourth battery temperature data and the lowest fourth battery temperature data;

[0131] The fourth highest battery temperature data is compared with the battery dew point temperature, and when the highest battery temperature reaches the battery dew point temperature, the battery dehumidifier is started.

[0132] For the above embodiments, please refer to Figure 3 , Figure 3 A schematic diagram of the structure of a terminal provided in an embodiment of the present application, as shown in the figure, includes a processor, an input device, an output device and a memory, the processor, the input device, the output device and the memory are interconnected, wherein the memory is used to store a computer program, the computer program includes program instructions, the processor is configured to call the program instructions, and the program includes instructions for executing the following steps;

[0133] When receiving a charging signal of the energy storage battery, obtaining first battery temperature data of the battery cell of the energy storage battery pack and second battery temperature data of the battery monitoring component;

[0134] Determining a battery thermal runaway warning area according to the first battery temperature data and the second battery temperature data;

[0135] Obtaining the third battery temperature data in the battery thermal runaway warning area;

[0136] determining a thermal runaway prevention expansion preload force according to the third battery temperature data;

[0137] Adjusting the cell preload force in the battery thermal runaway warning area to the thermal runaway prevention expansion preload force, and acquiring fourth battery temperature data;

[0138] A battery cooling strategy is determined according to the fourth battery temperature data.

[0139] In this example, the battery thermal runaway warning area is determined by first battery temperature data and second battery temperature data obtained when receiving the energy storage battery charging signal, and then the battery cell preload force in the battery thermal runaway warning area is adjusted according to the third battery temperature data of the battery thermal runaway warning area, so that the thermal runaway phenomenon that may occur during the rapid charging of the energy storage battery is suppressed by means of preload force, thereby protecting the battery during the rapid charging of the energy storage battery, so as to solve the problem that the battery cells of the existing energy storage battery may expand due to heat during the rapid charging process, which may cause adjacent batteries to squeeze each other and cause battery thermal runaway.

[0140] The above mainly introduces the scheme of the embodiment of the present application from the perspective of the execution process on the method side. It is understandable that in order to realize the above functions, the terminal includes a hardware structure and / or software module corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments provided herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0141] The embodiment of the present application can divide the terminal into functional units according to the above method example. For example, each functional unit can be divided according to each function, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of software functional units. It should be noted that the division of units in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0142] An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any one of the fast charging protection methods for energy storage devices recorded in the above method embodiments.

[0143] An embodiment of the present application also provides a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program enables a computer to execute part or all of the steps of any one of the fast charging protection methods for energy storage devices recorded in the above method embodiments.

[0144] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0145] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0146] In the several embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the device or unit can be electrical or other forms.

[0147] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0148] In addition, the functional units in the various embodiments of the application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware or in the form of software program modules.

[0149] If the integrated unit is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a memory, including a number of instructions to enable a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned memory includes: U disk, read-only memory (ROM), random access memory (RAM), mobile hard disk, disk or optical disk and other media that can store program codes.

[0150] A person of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable memory, which can include: a flash drive, a read-only memory, a random access memory, a magnetic disk or an optical disk, etc.

[0151] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A fast charging protection method for an energy storage device, characterized in that: include: When receiving a charging signal of the energy storage battery, obtaining first battery temperature data of the battery cell of the energy storage battery pack and second battery temperature data of the battery monitoring component; Determining a battery thermal runaway warning area according to the first battery temperature data and the second battery temperature data; Obtaining the third battery temperature data in the battery thermal runaway warning area; determining a thermal runaway prevention expansion preload force according to the third battery temperature data; Adjusting the cell preload force in the battery thermal runaway warning area to the thermal runaway prevention expansion preload force, and acquiring fourth battery temperature data; A battery cooling strategy is determined according to the fourth battery temperature data.

2. The fast charging protection method for an energy storage device according to claim 1, characterized in that: The determining the battery thermal runaway warning area according to the first battery temperature data and the second battery temperature data includes: Performing anomaly detection on the first battery temperature data and the second battery temperature data to obtain an anomaly detection result; If the abnormality detection result indicates that either the first battery temperature data or the second battery temperature data is abnormal, extracting the abnormal data in the first battery temperature data or the second battery temperature data as the fifth battery temperature data; Extracting abnormal battery temperature data from the fifth battery temperature data, wherein the abnormal battery temperature data is data that determines that the battery cell temperature is greater than a preset maximum battery safety temperature. A battery thermal runaway warning area is determined based on the abnormal battery temperature data.

3. The fast charging protection method for an energy storage device according to claim 1, characterized in that: The step of determining the thermal runaway prevention expansion preload force according to the third battery temperature data includes: extracting k abnormal battery temperature data from the third battery temperature data; Determining a battery thermal runaway expansion force according to the k abnormal battery temperature data; Obtaining the battery preload force in the battery thermal runaway warning area; The thermal runaway prevention expansion preload force is determined according to the battery thermal runaway expansion force and the battery preload force.

4. The fast charging protection method for an energy storage device according to claim 3, characterized in that: The step of determining the thermal runaway prevention expansion preload force according to the battery thermal runaway expansion force and the battery preload force comprises: Determining a safety margin of thermal runaway expansion force of the battery according to the thermal runaway expansion force of the battery; According to the battery thermal runaway expansion force safety margin and the battery preload, the thermal runaway expansion preload is prevented.

5. The fast charging protection method for an energy storage device according to claim 1, characterized in that: The determining, according to the fourth battery temperature data, a battery cooling strategy includes: Determining the highest fourth battery temperature data and the lowest fourth battery temperature data according to the fourth battery temperature data; determining a battery dew point temperature according to the highest fourth battery temperature data and the lowest fourth battery temperature data; The fourth highest battery temperature data is compared with the battery dew point temperature, and when the highest battery temperature reaches the battery dew point temperature, the battery dehumidifier is started.

6. A fast charging protection device for an energy storage device, characterized in that: include: A first acquisition unit, configured to acquire first battery temperature data of the energy storage battery pack cell and second battery temperature data of the battery monitoring component when receiving a charging signal of the energy storage battery; a first processing unit, configured to determine a battery thermal runaway warning area according to the first battery temperature data and the second battery temperature data; A second acquisition unit, used to acquire temperature data of a third battery in a battery thermal runaway warning area; a second processing unit, configured to determine a thermal runaway prevention expansion preload according to the third battery temperature data; a third processing unit, configured to adjust the cell preload force in the battery thermal runaway warning area to the thermal runaway prevention expansion preload force, and obtain fourth battery temperature data; The fourth processing unit is used to determine a battery cooling strategy according to the fourth battery temperature data.

7. The fast charging protection device of the energy storage device according to claim 6, characterized in that: In the aspect of determining the battery thermal runaway warning area according to the first battery temperature data and the second battery temperature data, the first processing unit is used to: Performing anomaly detection on the first battery temperature data and the second battery temperature data to obtain an anomaly detection result; If the abnormality detection result indicates that either the first battery temperature data or the second battery temperature data is abnormal, extracting the abnormal data in the first battery temperature data or the second battery temperature data as the fifth battery temperature data; Extracting abnormal battery temperature data from the fifth battery temperature data, wherein the abnormal battery temperature data is data that determines that the battery cell temperature is greater than a preset maximum battery safety temperature. A battery thermal runaway warning area is determined based on the abnormal battery temperature data.

8. The fast charging protection device of the energy storage device according to claim 6, characterized in that: In the aspect of determining the thermal runaway prevention expansion preload force according to the third battery temperature data, the second processing unit is used for: extracting k abnormal battery temperature data from the third battery temperature data; Determining a battery thermal runaway expansion force according to the k abnormal battery temperature data; Obtaining the battery preload force in the battery thermal runaway warning area; The thermal runaway prevention expansion preload force is determined according to the battery thermal runaway expansion force and the battery preload force.

9. A terminal, characterized in that: It includes a processor, an input device, an output device and a memory, which are interconnected, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the fast charging protection method for the energy storage device according to any one of claims 1 to 5.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, which includes program instructions. When the program instructions are executed by a processor, the processor executes the fast charging protection method for the energy storage device according to any one of claims 1 to 5.

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