Heating film dry burning identification method and device, power utilization device, electronic equipment and medium

Abstract

The invention relates to a heating film dry burning identification method and device, an electric device, electronic equipment and a medium. The method comprises the following steps: acquiring region colors and region temperatures corresponding to regions of the heating film; the area color indicates the actual color of the heating film in the area; according to the area color and the area temperature corresponding to each area of the heating film, determining an area identification result corresponding to each area of the heating film; determining a dry burning identification result of the heating film according to the area identification result corresponding to each area of the heating film; the dry burning identification result comprises the dry burning area ratio and / or the dry burning degree of the heating film. The dry burning of the heating film can be found in time, and the safety of the battery is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a method, device, electrical device, electronic device and medium for identifying dry burning of a heating film. Background Art

[0002] With the development of new energy technology, the application of batteries is becoming more and more extensive. If batteries are used in a low temperature environment for a long time, problems such as power attenuation, decreased charging and discharging efficiency, accelerated battery aging, and shortened battery life will occur. Therefore, a heating film is usually attached to the side of the battery to maintain the battery temperature.

[0003] At present, due to loose attachment, the heating film may warp, wrinkle, or the heating film may not fit the battery due to battery swelling. As a result, the heat generated by the heating film cannot be transferred to the battery, resulting in dry burning. Continuous dry burning will affect the performance of the heating film and thus affect battery safety.

[0004] Therefore, there is an urgent need for a method that can detect dry burning of the heating film in a timely manner to improve battery safety. Summary of the invention

[0005] Based on the above problems, the present application provides a method, device, electrical device, electronic device and medium for identifying dry burning of a heating film, which can detect dry burning of the heating film in a timely manner and improve the safety of the battery.

[0006] In the first aspect, the present application provides a method for identifying dry burning of a heating film, the method comprising: obtaining the regional color and regional temperature corresponding to each region of the heating film; the regional color indicates the actual color of the heating film in the region; according to the regional color and regional temperature corresponding to each region of the heating film, determining the regional identification results corresponding to each region of the heating film; the regional identification results are used to characterize whether there is a dry burning situation in the said region; according to the regional identification results corresponding to each region of the heating film, determining the dry burning identification result of the heating film; the dry burning identification result includes the dry burning area ratio and / or dry burning degree of the heating film.

[0007] In the technical solution of the embodiment of the present application, through the joint identification of color and temperature, not only can the dry burning of the heating film be discovered in time, but the degree of dry burning can also be quantified, so that relevant personnel can take corresponding measures, thereby improving the safety of the battery.

[0008] In some embodiments, according to the regional color and regional temperature corresponding to each region of the heating film, the regional identification result corresponding to each region of the heating film is determined, including: for each region of the heating film, when the regional color is a set color and the regional temperature is greater than or equal to a preset temperature threshold, determining that the regional identification result includes the presence of dry burning in the region. In the technical solution of the embodiment of the present application, the regional identification result is determined based on the regional color and the regional temperature, which can improve the accuracy of the regional identification result.

[0009] In some embodiments, the method further includes: when the color of the region is not a set color, and / or the temperature of the region is less than a preset temperature threshold, determining that the region identification result includes that there is no dry burning in the region. In the technical solution of the embodiment of the present application, the accuracy of the region identification result can be improved by jointly judging based on the region color and the region temperature.

[0010] In some embodiments, according to the regional recognition results corresponding to each area of ​​the heating film, the dry burning recognition result of the heating film is determined, including: according to the regional recognition results corresponding to each area of ​​the heating film, counting the number of target areas with dry burning; determining the dry burning recognition result of the heating film according to the number of target areas. In the technical solution of the embodiment of the present application, the dry burning recognition result includes the dry burning area ratio and / or the dry burning degree, which can intuitively reflect the severity of the dry burning, so that relevant personnel can take more appropriate treatment measures according to the severity, thereby improving the safety of the battery, and then reducing the frequency of battery replacement within a safe range, and extending the battery life.

[0011] In some embodiments, determining the dry burning identification result of the heating film according to the number of target areas includes: determining the dry burning area area corresponding to the number of target areas according to a pre-established area correspondence relationship; calculating the ratio of the dry burning area area to the total area of ​​the heating film to obtain the dry burning area ratio. In the technical solution of the embodiment of the present application, the accurate dry burning area area can be calculated according to the area correspondence relationship, providing a basis for determining the dry burning area ratio, thereby intuitively reflecting the severity of the dry burning.

[0012] In some embodiments, the method further comprises: determining the dry burning degree corresponding to the dry burning area ratio according to a pre-established degree correspondence relationship. In the technical solution of the embodiment of the present application, the accurate dry burning area can be calculated according to the area correspondence relationship, providing a basis for determining the dry burning degree, thereby intuitively reflecting the severity of the dry burning.

[0013] In some embodiments, the method further includes: when the dry burning area ratio is greater than a preset area ratio and / or the dry burning degree is higher than a preset degree, outputting an alarm message. In the technical solution of the embodiment of the present application, outputting an alarm message can timely remind relevant personnel to take corresponding treatment measures, thereby improving the safety of the battery and reducing the risk of fire caused by dry burning of the heating film.

[0014] In a second aspect, the present application also provides a heating film dry burning identification device, the device comprising:

[0015] The color temperature acquisition module is used to obtain the regional color and regional temperature corresponding to each area of ​​the heating film; the regional color indicates the actual color of the heating film in the area;

[0016] The area recognition module is used to determine the area recognition results corresponding to each area of ​​the heating film according to the area color and area temperature corresponding to each area of ​​the heating film; the area recognition results are used to characterize whether there is a dry burning situation in the area;

[0017] The dry-burning identification module is used to determine the dry-burning identification result of the heating film according to the area identification results corresponding to each area of ​​the heating film; the dry-burning identification result includes the dry-burning area ratio and / or the dry-burning degree of the heating film.

[0018] In a third aspect, the present application also provides an electrical device. The electrical device includes a battery, a heating film, multiple color sensors, multiple temperature sensors, and a battery management system;

[0019] The heating film is attached to the surface of the battery;

[0020] Multiple color sensors are arranged corresponding to different areas of the heating film, and the positions of the temperature sensors and the color sensors correspond one to one;

[0021] The battery management system is respectively connected with the battery, the heating film, the plurality of color sensors and the plurality of temperature sensors;

[0022] A battery management system, configured to execute the method as described in any one of the first aspects.

[0023] In a fourth aspect, the present application further provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements any one of the methods in the first aspect when executing the computer program.

[0024] In a fifth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the method of any one of the first aspects is implemented.

[0025] In a sixth aspect, the present application further provides a computer program product, comprising a computer program, which implements any one of the methods in the first aspect when executed by a processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the optional embodiments below. The accompanying drawings are only used for the purpose of illustrating the optional embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0027] Figure 1 is a schematic structural diagram of an electric device according to an embodiment of the present application;

[0028] Figure 2 This is a flowchart of the steps of a method for identifying dry burning of a heating film according to an embodiment of the present application;

[0029] Figure 3 is a flowchart of steps for determining a dry burning identification result of a heating film according to an embodiment of the present application;

[0030] Figure 4 is a flowchart of steps for determining a dry burning identification result of a heating film according to another embodiment of the present application;

[0031] Figure 5 This is a structural block diagram of a heating film dry burning identification device according to an embodiment of the present application;

[0032] Figure 6 It is a diagram of the internal structure of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0035] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0036] Reference to "embodiments" herein 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 herein may be combined with other embodiments.

[0037] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0038] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0039] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0040] With the development of new energy technologies, batteries are being used in more and more fields. If batteries are used in low temperature environments for a long time, problems such as power attenuation, decreased charging and discharging efficiency, accelerated battery aging, and shortened battery life will occur. Therefore, a heating film is usually attached to the side of the battery to maintain the battery temperature. At present, due to loose attachment, the heating film may warp and wrinkle, or the heating film may not fit the battery due to battery swelling, which will cause the heat generated by the heating film to be unable to be transferred to the battery, resulting in dry burning. Continuous dry burning will affect the performance of the heating film, and thus affect battery safety.

[0041] In view of the above problems, the embodiment of the present application provides a method for identifying dry burning of a heating film, which obtains the regional color and regional temperature corresponding to each region of the heating film; determines the regional identification results corresponding to each region of the heating film according to the regional color and regional temperature corresponding to each region of the heating film; and determines the dry burning identification results of the heating film according to the regional identification results corresponding to each region of the heating film. In the technical solution of the embodiment of the present application, through the joint identification of color and temperature, not only can the dry burning of the heating film be discovered in time, but also the degree of dry burning can be quantified, so that relevant personnel can take corresponding measures, thereby improving the safety of the battery.

[0042] The heating film dry burning identification method provided in the embodiment of the present application can be applied to Figure 1 In the electrical device shown, the electrical device includes a battery 101, a heating film 102, multiple color sensors 103, multiple temperature sensors 104 and a battery management system (BMS) 105; the heating film 102 is attached to the surface of the battery 101; the multiple color sensors 103 are arranged corresponding to different areas of the heating film 102, and the positions of the temperature sensors 104 and the color sensors 103 correspond one to one.

[0043] Exemplarily, a color sensor 103 and a temperature sensor 104 are respectively provided for the heating film 102 on each side of the battery 101, and each color sensor 103 can collect the actual color of the heating film 102 on one side of the battery, and each temperature sensor 104 can collect the temperature of the heating film 102 on one side of the battery. In actual applications, if the collection range of the color sensor 103 and / or the temperature sensor 104 is not sufficient to cover one side of the battery, multiple color sensors 103 and multiple temperature sensors 104 can be provided for the side of the battery, and each color sensor 103 collects the color of the corresponding area, and each temperature sensor 104 collects the temperature of the corresponding area.

[0044] It should be noted that the number and position of the color sensor 103 and the temperature sensor 104 are not limited to the above examples and can be set according to actual conditions. In addition, the positions and acquisition ranges of the color sensor 103 and the temperature sensor 104 are corresponding.

[0045] The battery management system 105 is respectively connected to the battery 101, the heating film 102, the plurality of color sensors 103 and the plurality of temperature sensors 104. The battery management system 105 can obtain battery data such as voltage and current from the battery 101, obtain the color of the corresponding area from the color sensor 103, obtain the temperature of the corresponding area from the temperature sensor 104, perform dry burning recognition according to the obtained area color and area temperature, control the heating film 102 according to the dry burning recognition result, and output alarm information.

[0046] In some embodiments, the electrical device may be, but is not limited to, new energy vehicles, intelligent robots, aircraft, etc., as well as large energy storage systems.

[0047] According to some embodiments of the present application, referring to Figure 2 , provides a method for identifying dry burning of a heating film, which is applied to Figure 1 The battery management system shown in the figure is used as an example to illustrate that the following steps may be included:

[0048] Step 201, obtaining the regional color and regional temperature corresponding to each region of the heating film.

[0049] The battery management system obtains the regional color from the color sensor set in each area of ​​the heating film, and obtains the regional temperature from the temperature sensor set in each area of ​​the heating film. Among them, the regional color indicates the actual color of the heating film in the area. When the heating film is dry-burned, the color of the heating film will change. The regional temperature indicates the actual temperature of the heating film in the area. It should be noted that the regional color and regional temperature are used together as the basis for dry-burning identification.

[0050] In some embodiments, the acquisition parameter of the color sensor can be set to a set color. If the set color is acquired, the set color is transmitted to the battery management system; if the set color is not acquired, the color is not transmitted. The battery management system can determine the color of the area based on whether the color transmitted by the color sensor is received. Exemplarily, if the battery management system receives the color transmitted by the color sensor, the area color is determined to be the set color; if the battery management system does not receive the color transmitted by the color sensor, the area color is determined to be the default color.

[0051] It should be noted that the method for obtaining the regional temperature can refer to the method for obtaining the regional color. The embodiment of the present application does not limit the method for obtaining the regional color and the regional temperature. In practical applications, other methods can also be used.

[0052] Step 202 : determining the region recognition results corresponding to each region of the heating film according to the region colors and region temperatures corresponding to each region of the heating film.

[0053] Among them, the area recognition result is used to characterize whether there is dry burning in the area.

[0054] For each area of ​​the heating film, the battery management system can determine whether the area has a dry burn according to the area color, and determine whether the area has a dry burn according to the area temperature; then, determine the area identification result corresponding to the area according to the color recognition result and / or the temperature recognition result. If both the color recognition result and the temperature recognition result indicate that the area has a dry burn, then the area identification result is determined to be that the area has a dry burn. Alternatively, if one of the color recognition result and the temperature recognition result indicates that the area has a dry burn, then the area identification result is determined to be that the area has a dry burn.

[0055] In some embodiments, it is first determined whether the region has a dry burning condition according to the region color. If it is determined that the region does not have a dry burning condition according to the region color, a region identification result that the region does not have a dry burning condition is directly obtained. If it is determined that the region has a dry burning condition according to the region color, it is then determined whether the region has a dry burning condition according to the region temperature; if it is also determined that the region has a dry burning condition according to the region temperature, a region identification result that the region has a dry burning condition is obtained.

[0056] Step 203, determining the dry-burning recognition result of the heating film according to the area recognition results corresponding to each area of ​​the heating film.

[0057] Among them, the dry burning identification result is used to characterize the dry burning area ratio or dry burning degree of the heating film.

[0058] After determining the area recognition results corresponding to each area, statistics are collected on all area recognition results to determine the dry-burning area ratio or dry-burning degree of the heating film, thereby obtaining the dry-burning recognition result of the heating film.

[0059] For example, the heating film is divided into 10 areas, and the area recognition results of 5 areas are that dry burning exists. Then it can be determined that the dry burning area ratio of the heating film is 50%.

[0060] Furthermore, different numbers are preset to correspond to different dry burning degrees, for example, if there is dry burning in 1-3 areas, the dry burning degree is slight; if there is dry burning in 4-6 areas, the dry burning degree is moderate; if there is dry burning in 7-8 areas, the dry burning degree is severe; if there is dry burning in 9-10 areas, the dry burning degree is very severe. If it is counted that there is dry burning in 5 areas of the heating film, it can be determined that the dry burning degree of the heating film is moderate.

[0061] In the above embodiment, the regional color and regional temperature corresponding to each region of the heating film are obtained; the regional identification results corresponding to each region of the heating film are determined according to the regional color and regional temperature corresponding to each region of the heating film; the dry burning identification result of the heating film is determined according to the regional identification results corresponding to each region of the heating film. In the technical solution of the embodiment of the present application, by jointly identifying color and temperature, not only can the dry burning of the heating film be discovered in time, but also the degree of dry burning can be quantified, so that relevant personnel can take corresponding measures, thereby improving the safety of the battery.

[0062] According to some embodiments of the present application, in the above-mentioned embodiment, "determining the regional identification results corresponding to each region of the heating film according to the regional color and regional temperature corresponding to each region of the heating film" may include: for each region of the heating film, when the regional color is a set color and the regional temperature is greater than or equal to a preset temperature threshold, determining the regional identification results includes that the region has a dry burning situation. When the regional color is not a set color, and / or the regional temperature is less than a preset temperature threshold, determining the regional identification results includes that the region does not have a dry burning situation.

[0063] For example, when the regional color is black and the regional temperature is greater than or equal to 120°C, it is determined that the regional color and the regional temperature meet the preset conditions. If the regional color is not black, it is determined that the regional color does not meet the preset conditions; if the regional temperature is less than 120°C, it is determined that the regional temperature does not meet the preset conditions.

[0064] It should be noted that the heating film may dry burn when the temperature is greater than or equal to 110°C, so the preset temperature threshold can be set according to 110°C. In the above example, the preset temperature threshold is 120°C, and in actual applications, the preset temperature threshold can also be set to 115°C, 125°C, or other values.

[0065] In the above embodiment, when the area color is the set color and the area temperature is greater than or equal to the preset temperature threshold, the area identification result is determined to include the presence of dry burning in the area; when the area color is not the set color and / or the area temperature is less than the preset temperature threshold, the area identification result is determined to include the absence of dry burning in the area. In the technical solution of the embodiment of the present application, the area identification result is determined based on the area color and the area temperature, which can improve the accuracy of the area identification result, thereby improving the accuracy of the dry burning identification result and reducing the risk of false alarms.

[0066] According to some embodiments of the present application, referring to Figure 3 In the above embodiment, “determining the dry burning identification result of the heating film according to the area identification results corresponding to each area of ​​the heating film” may include the following steps:

[0067] Step 301, according to the area recognition results corresponding to each area of ​​the heating film, the number of target areas with dry burning is counted.

[0068] After determining the area recognition results corresponding to each area of ​​the heating film, the battery management system counts the number of areas with dry burning for each battery side according to the area recognition results; then, the area numbers on multiple battery sides are summed to obtain the target area number.

[0069] For example, for battery side 1, the number of areas with dry burning is counted as 5; for battery side 2, the number of areas with dry burning is counted as 0; for battery side 3, the number of areas with dry burning is counted as 6, and for battery side 4, the number of areas with dry burning is counted as 0, then the number of target areas with dry burning is 11.

[0070] Step 302, determining a dry-burning recognition result of the heating film according to the number of target areas.

[0071] The total number of areas on the sides of multiple batteries is preset, and after the target number of areas is obtained, the ratio between the target number of areas and the total number of areas is calculated to obtain the dry burning area ratio of the heating film.

[0072] Different numbers corresponding to different dry burning degrees are preset, and after the number of target areas is obtained, the dry burning degree corresponding to the number of target areas is found according to the above correspondence. For example, the dry burning degree corresponding to the dry burning situation in 11 areas is found.

[0073] In the above embodiment, according to the regional recognition results corresponding to each area of ​​the heating film, the number of target areas with dry burning is counted; and the dry burning recognition result of the heating film is determined according to the number of target areas. In the technical solution of the embodiment of the present application, the dry burning recognition result includes the dry burning area ratio and / or the dry burning degree, which can intuitively reflect the severity of the dry burning, so that relevant personnel can take more appropriate treatment measures according to the severity, thereby improving the safety of the battery, and then reducing the frequency of battery replacement within a safe range, and extending the battery life.

[0074] According to some embodiments of the present application, referring to Figure 4 In the above embodiment, “determining the dry burning identification result of the heating film according to the number of target areas” may include the following steps:

[0075] Step 401, determining the dry burning area area corresponding to the target area quantity according to the pre-established area correspondence relationship.

[0076] The area correspondence relationship includes the area size corresponding to a single area. For example, a single area corresponds to 10cm 2 .

[0077] After determining the number of target areas, the area of ​​the dry burning area can be calculated based on the area correspondence and the number of target areas. For example, if there are dry burning in 11 areas, a single area corresponds to 10cm 2 , then the dry burning area S 干烧 110cm 2 .

[0078] Step 402, calculating the ratio of the dry-burning area area to the total area of ​​the heating film to obtain the dry-burning area ratio.

[0079] Preset the total area S of the heating film 加热膜 , after calculating the dry burning area S 干烧 After that, calculate the dry burning area and the total area S 加热膜 The ratio of the dry burning area ratio (A) is obtained, A=S 干烧 / S 加热膜 .

[0080] Step 403, determining the dry burning degree corresponding to the dry burning area ratio according to the pre-established degree correspondence relationship.

[0081] The degree correspondence relationship includes the dry burning degrees corresponding to different dry burning area ratios, as shown in Table 1.

[0082] Table 1

[0083]

[0084] After calculating the dry burning area ratio, the corresponding dry burning degree can be found in Table 1.

[0085] In the above embodiment, the dry burning area area corresponding to the number of target areas is determined according to the pre-established area correspondence relationship; the ratio of the dry burning area area to the total area of ​​the heating film is calculated to obtain the dry burning area ratio; and the dry burning degree corresponding to the dry burning area ratio is determined according to the pre-established degree correspondence relationship. In the technical solution of the embodiment of the present application, the accurate dry burning area area can be calculated according to the area correspondence relationship, which provides a basis for determining the dry burning area ratio and the dry burning degree, thereby intuitively reflecting the severity of the dry burning.

[0086] According to some embodiments of the present application, it may also include: outputting an alarm message when the dry burning area ratio is greater than a preset area ratio and / or the dry burning degree is higher than a preset degree.

[0087] If the dry burning area ratio is greater than the preset area ratio, an alarm message is output; if the dry burning degree is higher than the preset degree, an alarm message is output; if the dry burning area ratio is greater than or equal to the preset area ratio, and the dry burning degree is higher than the preset degree, an alarm message is output. For example, for some new energy vehicles, the dry burning area ratio can be set to be greater than 35%, and an alarm message is output; for other new energy vehicles, the dry burning area ratio can be set to be greater than 85%, and an alarm message is output. For another example, if the dry burning degree is higher than medium, an alarm message is output.

[0088] Among them, the output methods of alarm information may include: lighting up the alarm light, broadcasting the alarm information by voice, displaying the alarm information on the screen, etc.

[0089] It should be noted that the preset area, preset degree and output method of the alarm information are not limited to the above examples and can be set according to actual application conditions.

[0090] In the above embodiment, when the dry burning area ratio is greater than the preset area ratio and / or the dry burning degree is higher than the preset degree, an alarm message is output. In the technical solution of the embodiment of the present application, outputting the alarm message can timely remind relevant personnel to take corresponding treatment measures, thereby improving the safety of the battery and reducing the risk of fire caused by dry burning of the heating film.

[0091] According to some embodiments of the present application, a method for identifying dry burning of a heating film is provided, and the method is applied to Figure 1 The battery management system in the example can be used as an example to illustrate the following steps:

[0092] Step 1, obtaining the regional color and regional temperature corresponding to each region of the heating film.

[0093] Step 2, for each area of ​​the heating film, when the area color is the set color and the area temperature is greater than or equal to the preset temperature threshold, the area identification result is determined to include the presence of dry burning in the area; when the area color is not the set color, and / or the area temperature is less than the preset temperature threshold, the area identification result is determined to include the absence of dry burning in the area.

[0094] Step 3: Count the number of target areas with dry burning conditions according to the area recognition results corresponding to each area of ​​the heating film.

[0095] Step 4: Determine the dry burning area area corresponding to the target area quantity according to the pre-established area correspondence relationship.

[0096] Step 5, calculating the ratio of the dry-burning area to the total area of ​​the heating film to obtain the dry-burning area ratio.

[0097] Step 6: Determine the dry burning degree corresponding to the dry burning area ratio according to the pre-established degree correspondence relationship.

[0098] Step 7: When the dry burning area ratio is greater than a preset area ratio and / or the dry burning degree is higher than a preset degree, output an alarm message.

[0099] In the above embodiment, through the joint identification of color and temperature, not only can the dry burning of the heating film be discovered in time, but also the degree of dry burning can be quantified, thereby intuitively reflecting the severity of the dry burning, so that relevant personnel can take more appropriate treatment measures according to the severity, thereby improving the safety of the battery.

[0100] It should be understood that, although the various steps in the above flowchart are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the above flowchart may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0101] Based on the same inventive concept, the embodiment of the present application also provides a heating film dry-burning identification device for implementing the above-mentioned heating film dry-burning identification method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in one or more embodiments of the heating film dry-burning identification device provided below can refer to the above-mentioned limitations on the heating film dry-burning identification method, and will not be repeated here.

[0102] According to some embodiments of the present application, referring to Figure 5 The present application provides a heating film dry burning identification device, the device comprising:

[0103] The color temperature acquisition module 501 is used to acquire the regional color and regional temperature corresponding to each region of the heating film; the regional color indicates the actual color of the heating film in the region;

[0104] The region identification module 502 is used to determine the region identification results corresponding to each region of the heating film according to the region color and region temperature corresponding to each region of the heating film; the region identification results are used to characterize whether there is a dry burning situation in the region;

[0105] The dry burning identification module 503 is used to determine the dry burning identification result of the heating film according to the area identification results corresponding to each area of ​​the heating film; the dry burning identification result includes the dry burning area ratio and / or the dry burning degree of the heating film.

[0106] In some embodiments, the region identification module 502 is specifically used to determine, for each region of the heating film, when the region color is a set color and the region temperature is greater than or equal to a preset temperature threshold, that the region identification result includes the presence of dry burning in the region.

[0107] In some embodiments, the region identification module 502 is specifically used to determine that the region identification result includes that there is no dry burning in the region when the region color is not a set color and / or the region temperature is less than a preset temperature threshold.

[0108] In some embodiments, the dry-burn identification module 503 is specifically used to count the number of target areas with dry-burn conditions according to the area identification results corresponding to each area of ​​the heating film; and determine the dry-burn identification result of the heating film according to the number of target areas.

[0109] In some embodiments, the dry burning identification module 503 is specifically used to determine the dry burning area area corresponding to the number of target areas according to a pre-established area correspondence relationship; calculate the ratio of the dry burning area area to the total area of ​​the heating film to obtain the dry burning area ratio.

[0110] In some embodiments, the dry burning identification module 503 is specifically configured to determine the dry burning degree corresponding to the dry burning area ratio according to a pre-established degree correspondence relationship.

[0111] In some embodiments, the apparatus further comprises:

[0112] The alarm output module is used to output an alarm message when the dry burning area ratio is greater than a preset area ratio and / or the dry burning degree is higher than a preset degree.

[0113] Each module in the above-mentioned heating film dry burning identification device can be implemented in whole or in part by software, hardware and their combination. The above-mentioned modules can be embedded in or independent of the processor in the electronic device in the form of hardware, or can be stored in the memory of the electronic device in the form of software, so that the processor can call and execute the corresponding operations of each of the above modules.

[0114] According to some embodiments of the present application, an electronic device is provided. The electronic device may be a battery management system, and its internal structure diagram may be as follows: Figure 6 As shown. The electronic device includes a processor, a memory, an input / output interface, and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the electronic device is used to exchange information between the processor and an external device. The communication interface of the electronic device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a method for identifying dry burning of a heating film is implemented.

[0115] Those skilled in the art will understand that Figure 6 The structure shown in the figure is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the electronic device to which the scheme of the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0116] According to some embodiments of the present application, there is also provided a non-transitory computer-readable storage medium including instructions, such as a memory including instructions, and the above instructions can be executed by a processor of an electronic device to complete the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0117] According to some embodiments of the present application, a computer program product is also provided, and when the computer program is executed by a processor, the above method can be implemented. The computer program product includes one or more computer instructions. When these computer instructions are loaded and executed on a computer, part or all of the above method can be implemented in whole or in part according to the process or function described in the embodiment of the present application.

[0118] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0119] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0120] The above-described embodiments only express several implementation methods of the present application, which is convenient for understanding the technical solutions of the present application in detail, but cannot be understood as limiting the scope of protection of the invention patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. It should be understood that the technical solutions obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the technical solutions provided in the present application are all within the protection scope of the attached claims described in the present application. Therefore, the protection scope of the patent of this application shall be based on the contents of the attached claims, and the description and drawings can be used to explain the contents of the claims.

Claims

1. A method for identifying dry burning of a heating film, characterized in that: The method comprises: Obtaining the regional color and regional temperature corresponding to each region of the heating film; the regional color indicates the actual color of the heating film in the region; Determine the region recognition result corresponding to each region of the heating film according to the region color and region temperature corresponding to each region of the heating film; the region recognition result is used to characterize whether there is a dry burning situation in the region; According to the area recognition results corresponding to each area of ​​the heating film, the dry-burning recognition result of the heating film is determined; the dry-burning recognition result includes the dry-burning area ratio and / or the dry-burning degree of the heating film.

2. The method according to claim 1, characterized in that Determining the region recognition results corresponding to each region of the heating film according to the region colors and region temperatures corresponding to each region of the heating film includes: For each area of ​​the heating film, when the color of the area is a set color and the temperature of the area is greater than or equal to a preset temperature threshold, it is determined that the area identification result includes the existence of a dry burning condition in the area.

3. The method according to claim 2, characterized in that The method further comprises: When the color of the area is not the set color, and / or the temperature of the area is less than the preset temperature threshold, it is determined that the area identification result includes that there is no dry burning situation in the area.

4. The method according to claim 1, characterized in that: The step of determining the dry-burning recognition result of the heating film according to the region recognition results corresponding to each region of the heating film comprises: According to the area recognition results corresponding to each area of ​​the heating film, the number of target areas with dry burning is counted; The dry burning recognition result of the heating film is determined according to the number of the target areas.

5. The method according to claim 4, characterized in that The step of determining the dry-burning recognition result of the heating film according to the number of target areas includes: According to a pre-established area correspondence relationship, determine the dry burning area area corresponding to the number of target areas; wherein the area correspondence relationship includes the area size corresponding to a single area; The ratio of the dry-burning area area to the total area of ​​the heating film is calculated to obtain the dry-burning area ratio.

6. The method according to claim 5, characterized in that The method further comprises: The dry burning degree corresponding to the dry burning area ratio is determined according to a pre-established degree correspondence relationship; wherein the degree correspondence relationship includes dry burning degrees corresponding to different dry burning area ratios.

7. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: When the dry burning area ratio is greater than a preset area ratio and / or the dry burning degree is higher than a preset degree, an alarm message is output.

8. A heating film dry burning identification device, characterized in that: The device comprises: A color temperature acquisition module, used to acquire the regional color and regional temperature corresponding to each region of the heating film; the regional color indicates the actual color of the heating film in the region; A region identification module, used to determine the region identification results corresponding to each region of the heating film according to the region color and region temperature corresponding to each region of the heating film; the region identification results are used to characterize whether there is a dry burning situation in the region; The dry-burning identification module is used to determine the dry-burning identification result of the heating film according to the area identification results corresponding to each area of ​​the heating film; the dry-burning identification result includes the dry-burning area ratio and / or the dry-burning degree of the heating film.

9. An electrical device, characterized in that: The electrical device includes a battery, a heating film, a plurality of color sensors, a plurality of temperature sensors and a battery management system; The heating film is attached to the surface of the battery; The plurality of color sensors are arranged corresponding to different areas of the heating film, and the positions of the temperature sensors correspond one to one to the positions of the color sensors; The battery management system is respectively connected to the battery, the heating film, the plurality of color sensors and the plurality of temperature sensors; The battery management system is used to execute the method according to any one of claims 1 to 7.

10. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the method according to any one of claims 1 to 7 is implemented.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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