A power battery classification method based on climate zoning

Abstract

The application relates to the technical field of power batteries and climate application, and specifically discloses a power battery classification method based on climate zoning, which comprises the following steps: obtaining climate zoning data and meteorological element time sequence characteristics of a target region, establishing a power battery working condition meteorological element threshold system, superimposing the meteorological element threshold system on the meteorological element time sequence characteristics, obtaining a meteorological element stress analysis result, calculating a stress index or a comprehensive stress index, determining a power battery production category according to a production category mapping condition, and outputting a classification result and a technical guide. According to the application, the regional climate time sequence, the battery working condition threshold and the index result are integrated into the same classification chain, the classification basis is changed from a static field to a corresponding relationship between climate change processes and working condition boundaries, the classification result can reflect single meteorological elements and compound climate influences, and consistent data sources are provided for research and development guidance, test working conditions and use guidelines.

Description

Technical Field

[0001] This invention relates to the fields of power battery technology and climate application technology, and in particular to a power battery classification method based on climate zoning. Background Technology

[0002] The fields of power battery technology and climate application technology focus on the technical processing of power battery type identification, usage condition recording and operation status management under different climate environments. Typically, the battery pack, vehicle controller, thermal management components, environmental sensors and data storage terminals work together to complete information collection, transmission, storage and retrieval.

[0003] Traditional power battery classification methods refer to classifying power batteries based on their material system, structural form, applicable temperature conditions, and usage area. Generally, battery identification, testing records, operating conditions, and regional climate information are read, compared according to preset classification rules or grade tables, and the classification results are recorded in management ledgers, databases, or vehicle configuration files.

[0004] Traditional power battery classification often relies on rule comparisons based on battery identification, testing records, operating conditions, and regional climate fields. Climate information is used as an auxiliary condition for static matching. There is a lack of continuous correspondence between the annual variation of regional meteorological elements and battery operating condition thresholds. The combined climate effects of temperature, humidity, air pressure, etc., are difficult to be transformed into intermediate classification results. This makes the differences in environmental stress in different climate regions and seasonal stages not fully expressed in battery classification. Furthermore, there is insufficient connection between classification results and production categories, testing conditions, and user guidelines. Summary of the Invention

[0005] The purpose of this invention is to provide a power battery classification method based on climate zoning, which establishes a correlation between the temporal changes of meteorological elements such as temperature, humidity and air pressure in the target area and the threshold system corresponding to the operating conditions of the power battery. This enables the determination of the power battery production category to simultaneously reflect the climate prototype zoning, temperature stress state and the synergistic effects of humidity and air pressure, forming a power battery classification basis suitable for classification results and technical guidance output.

[0006] To achieve the above objectives, the present invention provides a method for classifying power batteries based on climate zoning, comprising the following steps: Acquire the temporal characteristics of meteorological elements in the target area, including temperature observations, humidity observations, and air pressure observations arranged in chronological order. Based on the similarity between the temporal characteristics of meteorological elements in adjacent regional units, climate prototype zones are divided. Specifically, this includes: performing synchronous time window comparison on the temporal characteristics of meteorological elements in adjacent regional units; merging adjacent regional units into the same climate prototype zone when they meet preset similarity conditions in the temperature change range, humidity change range, and air pressure change range; and retaining the zone boundary of adjacent regional units when any change range does not meet the preset similarity conditions. Based on the merging results of adjacent regional units and the retained zoning boundaries, each regional unit within the target area is classified, the climate prototype zoning to which each regional unit belongs is determined, and the classification relationship between regional units and climate prototype zoning is generated.

[0007] Establish a meteorological element threshold system corresponding to the operating conditions of power batteries. The meteorological element threshold system includes suitable operating condition thresholds and stress thresholds for each climate prototype zone. Temperature in the time-series characteristics of the meteorological elements is used as the basic meteorological element and is superimposed point by point with the temperature threshold in the meteorological element threshold system to obtain the temperature stress analysis results; at the same time, humidity and air pressure in the time-series characteristics of the meteorological elements are used as co-meteoroidal elements, which do not participate in the direct superposition of temperature stress, but are used for subsequent index calculations. Calculate the individual temperature stress index based on the temperature stress analysis results; Based on the humidity time-series characteristics and air pressure time-series characteristics, and combined with their respective stress thresholds, the humidity stress index and air pressure stress index are calculated. The individual temperature stress index, humidity stress index, and air pressure stress index are fused together according to the preset weights of each meteorological element under different power battery operating conditions to generate a comprehensive stress index. When the comprehensive stress index meets the production category mapping conditions, the production category of the power battery is determined and the corresponding classification results and technical guidelines are output.

[0008] Furthermore, the process of obtaining the time-series characteristics of the meteorological elements in the target area includes: obtaining annual meteorological observation records based on the geographical boundaries of the target area; classifying the meteorological observation records into corresponding regional units according to the collection location of the meteorological observation records; and forming the time-series characteristics of the meteorological elements in the order of time for the meteorological observation records within the regional units.

[0009] Furthermore, the preset similarity conditions include: the temperature change range of adjacent regional units within the same time window falls into the same temperature determination range, the humidity change range falls into the same humidity determination range, and the air pressure change range falls into the same air pressure determination range. The temperature determination interval, humidity determination interval, and air pressure determination interval are preset according to the climate zoning index system of the target area. When adjacent regional units are inconsistent in any of the temperature determination interval, humidity determination interval, and air pressure determination interval, it is determined that they do not meet the preset similarity conditions.

[0010] Furthermore, the process of establishing the meteorological element threshold system corresponding to the operating conditions of the power battery includes: setting appropriate operating condition thresholds and stress thresholds according to the environmental boundaries corresponding to the charging, discharging, and stationary operating conditions of the power battery; configuring the appropriate operating condition threshold as the judgment boundary for the time-series characteristics of meteorological elements falling into the normal classification interval; configuring the stress threshold as the judgment boundary for the time-series characteristics of meteorological elements falling into the stress classification interval; and writing the appropriate operating condition threshold and stress threshold under the same meteorological element into the same threshold record.

[0011] Furthermore, the threshold record includes the meteorological element name, operating condition type, suitable operating condition threshold, stress threshold, and applicable zone of the threshold.

[0012] During the analysis, each threshold record is matched with the temporal characteristics of the corresponding meteorological elements within the target area based on the name of the meteorological element.

[0013] If the statistical period of the time series characteristics of meteorological elements in the target area is inconsistent with the applicable zone of the threshold, the corresponding time series characteristics of meteorological elements shall be reselected according to the applicable zone of the threshold and used for subsequent overlay analysis.

[0014] Furthermore, the process of using temperature as the basic meteorological element in the time-series characteristics of the meteorological elements and performing point-by-point superposition analysis with temperature thresholds includes: comparing the temperature observation value with the suitable operating condition threshold and the stress threshold in the temperature threshold system point by point according to the sampling time; recording the suitable time period when the temperature observation value falls into the range defined by the suitable operating condition threshold; recording the stress time period when the temperature observation value reaches the boundary defined by the stress threshold; and generating the temperature stress analysis result based on the suitable time period and the stress time period.

[0015] Furthermore, the process of generating the temperature stress analysis results based on suitable and stress periods includes: statistically analyzing the duration, frequency, and percentage of stress periods according to the sampling time within the same climate prototype zone; generating stress records for individual meteorological elements based on the duration, frequency, and percentage of stress periods; and writing the stress records into the temperature stress analysis results according to the meteorological element name and climate prototype zone.

[0016] Furthermore, the process of fusing the individual temperature stress index, humidity stress index, and pressure stress index according to preset weights for each meteorological element under different power battery operating conditions to generate a comprehensive stress index includes: The stress indices corresponding to temperature, humidity, and air pressure are obtained respectively, and then weighted and summed based on the preset weights to generate a comprehensive stress index. The comprehensive stress index is arranged according to the statistical period to generate an index sequence; The comprehensive stress index is identified based on the index sequence, and the time period when the stress period exceeds the stress threshold is used as the basis for production classification. The production classification result of the power battery is output according to the correspondence between the stress period and the production category.

[0017] Furthermore, the preset weights are determined according to the operating conditions of the power battery. The weight corresponding to humidity is higher under charging conditions than under discharging conditions, and the weight corresponding to temperature is higher under discharging conditions than under charging conditions.

[0018] Furthermore, the production category mapping conditions include the correspondence between index intervals and power battery production categories. When the comprehensive stress index falls within the same index interval, the corresponding power battery production category is output. When the comprehensive stress index spans at least two index intervals, the power battery production category is determined according to the index interval with higher environmental stress, and the power battery production category is output synchronously with the classification results and technical guidelines.

[0019] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: In this invention, by acquiring climate zoning data and time-series characteristics of meteorological elements in the target area, and establishing a meteorological element threshold system corresponding to the operating conditions of the power battery, the meteorological element threshold system is superimposed on the time-series characteristics of meteorological elements to form meteorological element stress analysis results. This transforms the regional climate change process into an intermediate result that can participate in classification. Based on the stress index, a comprehensive stress index or index sequence determines the production category, allowing the individual and combined effects of meteorological elements such as temperature, humidity, and air pressure to enter the same classification chain. This ensures that the classification results correspond to the technical guidelines, facilitating the unified expression of subsequent material systems, test conditions, and usage conditions. Attached Figure Description

[0020] Figure 1 This is the main flowchart of the power battery classification based on climate zoning in this invention; Figure 2 This is a schematic diagram illustrating the formation of temporal characteristics of meteorological elements and the classification of regional units in this invention; Figure 3 This is a schematic diagram of the synchronous time window comparison of the climate prototype zoning in this invention; Figure 4 This is a schematic diagram of the point-by-point superposition analysis of temperature thresholds in this invention; Figure 5 This is a schematic diagram illustrating the fusion of multiple meteorological element indices and the mapping of production categories in this invention. Detailed Implementation

[0021] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0022] In embodiments of the present invention, words such as "exemplarily," "for example," etc., are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner. Furthermore, in embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one.

[0023] Please see Figures 1 to 5 This embodiment provides a power battery classification method based on climate zoning, which includes the following steps.

[0024] S1, obtain the temporal characteristics of meteorological elements in the target area.

[0025] Based on the geographical boundaries of the target area, accumulated meteorological observation records are obtained. These records are then categorized into corresponding regional units according to their collection locations. Within each regional unit, the meteorological observation records are arranged chronologically to form the temporal characteristics of meteorological elements. These temporal characteristics include temperature, humidity, and air pressure observations arranged in chronological order.

[0026] For any given region, let the temperature observation sequence be... The humidity observation sequence is The air pressure observation sequence is ,in This represents the number of samples taken within the statistical period. The temporal characteristics of meteorological elements are jointly constituted by the temperature observation sequence, humidity observation sequence, and air pressure observation sequence.

[0027] S2, based on the similarity between the temporal characteristics of meteorological elements in adjacent regional units, divides the climate prototype zones.

[0028] Synchronous time window comparison is performed on the temporal characteristics of meteorological elements in adjacent regional units. Let adjacent regional units be A and B. Within the same time window, the temperature variation range of regional unit A is... The humidity variation range is The air pressure variation range is The temperature variation range of region unit B is: The humidity variation range is The air pressure variation range is .

[0029] The preset similarity conditions are based on the climate zoning index system of the target area, which pre-defines temperature, humidity, and air pressure determination intervals. When the temperature change intervals, humidity change intervals, and air pressure change intervals of adjacent regional units A and B within the same time window fall into the same temperature determination interval, respectively, and fall into the same humidity determination interval, respectively, all three conditions are met simultaneously, and the adjacent regional units are merged into the same climate prototype zone. When any of the temperature, humidity, or air pressure determination intervals is inconsistent, it is determined that the preset similarity conditions are not met, and the zone boundary of the adjacent regional units is retained.

[0030] Based on the merging results of adjacent regional units and the retained zoning boundaries, each regional unit within the target area is classified to determine its corresponding climate prototype zoning, and the classification relationship between the regional units and the climate prototype zoning is generated. The resulting climate prototype zoning reflects both the regional spatial location and the synchronous changes in temperature, humidity, and air pressure within the same time window.

[0031] S3, establish a meteorological element threshold system corresponding to the operating conditions of power batteries.

[0032] For each climate prototype zone, a meteorological element threshold system corresponding to the operating conditions of the power battery is established. The operating conditions of the power battery include charging, discharging, and resting conditions. Suitable operating condition thresholds and stress thresholds are set according to the environmental boundaries corresponding to the charging, discharging, and resting conditions of the power battery. The suitable operating condition threshold is configured as the judgment boundary for the time-series characteristics of meteorological elements falling into the normal classification interval, and the stress threshold is configured as the judgment boundary for the time-series characteristics of meteorological elements falling into the stress classification interval. The suitable operating condition threshold and stress threshold for the same meteorological element are recorded in the same threshold record.

[0033] Threshold records include meteorological element names, operating condition types, suitable operating condition thresholds, stress thresholds, and applicable threshold zones. During analysis, each threshold record is matched with the corresponding meteorological element time-series characteristics within the target area based on the meteorological element name. If the statistical period of the meteorological element time-series characteristics within the target area is inconsistent with the applicable threshold zone, the corresponding meteorological element time-series characteristics are reselected according to the applicable threshold zone and used for subsequent overlay analysis.

[0034] In one possible implementation: * Temperature threshold system: including a low-temperature stress threshold, a suitable lower temperature limit, a suitable upper temperature limit, and a high-temperature stress threshold. The low-temperature stress threshold can be set to 10°C, the suitable lower temperature limit can be set to 25°C, the suitable upper temperature limit can be set to 35°C, and the high-temperature stress threshold can be set to 45°C. When the observed temperature value is below the low-temperature stress threshold, it corresponds to a low-temperature stress state; when the observed temperature value is between the suitable lower temperature limit and the suitable upper temperature limit, it corresponds to a suitable operating condition state; when the observed temperature value is above the high-temperature stress threshold, it corresponds to a high-temperature stress state. * Humidity threshold system: including a low-humidity stress threshold and a high-humidity stress threshold. The low-humidity stress threshold can be set to 40%, and the high-humidity stress threshold can be set to 80%. When the observed humidity value is below the low-humidity stress threshold, it corresponds to a low-humidity stress state; when the observed humidity value is above the high-humidity stress threshold, it corresponds to a high-humidity stress state. * Pressure threshold system: including a low-pressure stress threshold and a high-pressure stress threshold, the low-pressure stress threshold and the high-pressure stress threshold are configured according to the corresponding climate prototype zone and the power battery operating conditions.

[0035] S4 uses temperature as a basic meteorological element and performs point-by-point superposition analysis to obtain the temperature stress analysis results.

[0036] According to the sampling time, the temperature observation sequence Each temperature observation value is compared point-by-point with the suitable operating condition threshold and the stress threshold in the temperature threshold system. A suitable time period is recorded when the temperature observation value falls within the range defined by the suitable operating condition threshold; a stress time period is recorded when the temperature observation value reaches the boundary defined by the stress threshold. Temperature stress analysis results are generated based on the suitable and stress time periods. Humidity and air pressure, as co-meteoric meteorological elements, do not participate in the direct superposition of temperature stress but are used for subsequent index calculations.

[0037] When generating temperature stress analysis results, the duration, frequency, and percentage of stress periods are statistically analyzed according to the sampling time within the same climate prototype zone. Based on the duration, frequency, and percentage of periods, stress records for individual meteorological elements are generated, and these stress records are written into the temperature stress analysis results according to the meteorological element name and climate prototype zone.

[0038] Let the total sampling period within the statistical period be . The period of low temperature stress is The period of high temperature stress is Suitable working conditions and time periods are Then we can get:

[0039] in, This indicates the percentage of time spent under low-temperature stress. This indicates the percentage of periods under high-temperature stress. This indicates the percentage of suitable operating conditions. The temperature stress analysis results include periods of low-temperature stress, periods of high-temperature stress, periods of suitable operating conditions, the sampling time corresponding to each period, and the percentage of each period.

[0040] Furthermore, a single temperature stress index is formed based on the proportion of low-temperature stress periods and the proportion of high-temperature stress periods. Single temperature stress index It can be represented as:

[0041] in, As the weight for low temperature stress, The weights for high-temperature stress and low-temperature stress are configured according to the operating conditions of the power battery. If low-temperature and high-temperature stresses need to be treated equally, the weights for low-temperature stress and high-temperature stress can be configured in the same way. The weight corresponding to temperature is higher under discharge conditions than under charging conditions to reflect the dominant influence of temperature on the discharge process.

[0042] S5 calculates the stress index of synergistic meteorological elements based on the temporal characteristics of humidity and air pressure.

[0043] Humidity and air pressure are used as co-meteorological elements in subsequent index calculations.

[0044] Regarding the temporal characteristics of humidity, let the period of low humidity stress within the statistical period be denoted as . The period of high humidity stress is Then we can get:

[0045] in, This indicates the percentage of periods of low humidity stress. This indicates the percentage of periods of high humidity stress. Humidity Stress Index It can be represented as:

[0046] in, For low humidity stress weighting, The weights for high humidity stress are determined based on the operating conditions of the power battery. During charging, the weight corresponding to humidity is higher than that during discharging, to reflect the impact of humidity on the charging process and the reliability of battery-related electronic components.

[0047] Regarding the temporal characteristics of air pressure, let the period of low-pressure stress within the statistical period be _____. The period of high-pressure stress is Then we can get:

[0048] in, This indicates the percentage of periods of low-pressure stress. This indicates the percentage of periods of high-pressure stress. Pressure Stress Index It can be represented as:

[0049] in, For low-pressure stress weights, The high-pressure stress weight is used for the low-pressure stress weight. The low-pressure stress weight and high-pressure stress weight are configured according to the climate prototype zoning and the power battery operating condition type.

[0050] S6 integrates the individual temperature stress index, humidity stress index, and air pressure stress index to generate a comprehensive stress index.

[0051] In obtaining a single temperature stress index Humidity stress index and barometric stress index Then, based on the preset weights of each meteorological element under different power battery operating conditions, a comprehensive stress index is generated by weighting and summing the results. Comprehensive Stress Index It can be represented as:

[0052] in, Preset weights corresponding to temperature, Preset weights corresponding to humidity. The preset weights corresponding to air pressure, and , and The weighting is determined based on the operating condition of the power battery. Under discharge conditions, the preset weighting for temperature is higher than that for charging conditions; under charging conditions, the preset weighting for humidity is higher than that for discharge conditions.

[0053] If the comprehensive stress index is calculated continuously over multiple statistical periods, an index series can be formed:

[0054] in, Represents an exponential sequence. to These represent the comprehensive stress indices formed within different statistical periods. This refers to the number of statistical periods. After generating an index sequence based on the comprehensive stress index according to the statistical period, the period in which the comprehensive stress index exceeds the stress threshold is identified based on the index sequence. This stress period is used as the basis for determining the production classification, and the production classification result of the power battery is output according to the correspondence between the stress period and the production category.

[0055] S7. Determine the production category of the power battery based on the condition that the comprehensive stress index meets the production category mapping conditions.

[0056] The production category mapping conditions include the correspondence between index intervals and power battery production categories. When the comprehensive stress index falls within the same index interval, the corresponding power battery production category is output; when the comprehensive stress index spans at least two index intervals, the power battery production category is determined according to the index interval with the higher degree of environmental stress, and the power battery production category, classification results, and technical guidelines are output simultaneously.

[0057] In one possible implementation, the production category criterion can be set by combining the proportion of temperature stress periods and the proportion of humidity stress periods. For example: when and At that time, the power battery production category corresponds to high-temperature advantageous batteries; when and At that time, the power battery production category corresponds to low-temperature advantageous batteries; when and At that time, the power battery production category corresponds to wide-temperature-range batteries; when At that time, the power battery production category corresponds to the room temperature optimal matching battery; when and At that time, the power battery production category corresponds to high humidity tolerance battery; when and At that time, the power battery production category corresponds to dry-adaptive batteries; when , , and At that time, the power battery production category corresponds to the low-temperature drying advantage type battery.

[0058] The above production category criteria can be configured based on the temporal characteristics of meteorological elements corresponding to the climate prototype zone, the operating conditions of the power battery, and the production category mapping conditions. If the comprehensive stress index or index sequence triggers two or more production category mapping conditions simultaneously, the power battery production category will be determined according to the index interval with the higher degree of environmental stress, and the production category will be output synchronously with the classification results and technical guidelines.

[0059] S8 outputs classification results and technical guidance.

[0060] The classification results include climate prototype zones, individual temperature stress indices, humidity stress indices, pressure stress indices, comprehensive stress indices, index sequences, and power battery production categories. Technical guidance is output simultaneously with the classification results. This guidance may include recommended battery material systems, operating environment parameter calibration ranges, protective design preferences, customized test conditions, charge / discharge operation recommendations, storage condition descriptions, and maintenance requirements.

[0061] When the power battery production category is a low-temperature advantage battery, the technical guidelines may include low-temperature start-up testing, low-temperature cycle life testing, low-temperature storage testing, and low-temperature charge-discharge boundary configuration.

[0062] When the power battery production category is a high humidity resistant battery, the technical guidelines may include sealing protection design, moisture risk control, and humidity-related test condition configuration.

[0063] When the power battery production category is a dry-adaptive battery, the technical guidelines may include anti-static design, low-humidity environment operation constraints, and low-humidity storage condition configuration.

[0064] When the power battery production category is a low-temperature drying advantage type battery, the technical guidelines may include low-temperature start-up, anti-static measures, low-temperature storage, and low-humidity environment maintenance.

[0065] In a specific calculation process, if the proportion of low-temperature stress periods in a certain climate prototype zone is... The percentage was 37.5%, representing the proportion of periods under high-temperature stress. The percentage of suitable working conditions is 0. If it is 20.8%, then this climate prototype zone satisfies and Based on the criteria, the corresponding power battery production category can be determined as a low-temperature advantage type battery.

[0066] If we further incorporate humidity temporal characteristics, the proportion of low humidity stress periods... The percentage was 75%, with high humidity stress periods accounting for 75%. It is 16.7%, and simultaneously meets the following conditions. , , and Based on the criteria, the corresponding power battery production category for this climate prototype zone is low-temperature drying advantage type battery, and the technical guidelines can be formed around low-temperature start-up, low-temperature cycling, anti-static and low-humidity environment maintenance.

[0067] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for classifying power batteries based on climate zoning, characterized in that, include: Acquire the temporal characteristics of meteorological elements in the target area, including temperature observations, humidity observations, and air pressure observations arranged in chronological order. Based on the similarity between the temporal characteristics of meteorological elements in adjacent regional units, climate prototype zones are divided. Specifically, this includes: performing synchronous time window comparison on the temporal characteristics of meteorological elements in adjacent regional units; merging adjacent regional units into the same climate prototype zone when they meet preset similarity conditions in the temperature change range, humidity change range, and air pressure change range; and retaining the zone boundary of adjacent regional units when any change range does not meet the preset similarity conditions. Based on the merging results of adjacent regional units and the retained partition boundaries, each regional unit within the target area is classified, the climate prototype partition to which each regional unit belongs is determined, and the classification relationship between regional units and climate prototype partitions is generated. Establish a meteorological element threshold system corresponding to the operating conditions of power batteries. The meteorological element threshold system includes suitable operating condition thresholds and stress thresholds for each climate prototype zone. Temperature in the time-series characteristics of the meteorological elements is used as the basic meteorological element and is superimposed point by point with the temperature threshold in the meteorological element threshold system to obtain the temperature stress analysis results; at the same time, humidity and air pressure in the time-series characteristics of the meteorological elements are used as co-meteoroidal elements, which do not participate in the direct superposition of temperature stress, but are used for subsequent index calculations. Calculate the individual temperature stress index based on the temperature stress analysis results; Based on the humidity time-series characteristics and air pressure time-series characteristics, and combined with their respective stress thresholds, the humidity stress index and air pressure stress index are calculated. The individual temperature stress index, humidity stress index, and air pressure stress index are fused together according to the preset weights of each meteorological element under different power battery operating conditions to generate a comprehensive stress index. When the comprehensive stress index meets the production category mapping conditions, the production category of the power battery is determined and the corresponding classification results and technical guidelines are output.

2. The power battery classification method based on climate zoning according to claim 1, characterized in that, The process of obtaining the time-series characteristics of the meteorological elements in the target area includes: obtaining annual meteorological observation records based on the geographical boundaries of the target area; classifying the meteorological observation records into corresponding regional units according to the collection location of the meteorological observation records; and forming the time-series characteristics of the meteorological elements in the order of time for the meteorological observation records within the regional units.

3. The power battery classification method based on climate zoning according to claim 1, characterized in that, The preset similarity conditions include: the temperature change range of adjacent regional units within the same time window falls into the same temperature determination range, the humidity change range falls into the same humidity determination range, and the air pressure change range falls into the same air pressure determination range. The temperature determination interval, humidity determination interval, and air pressure determination interval are preset according to the climate zoning index system of the target area. When adjacent regional units are inconsistent in any of the temperature determination interval, humidity determination interval, and air pressure determination interval, it is determined that they do not meet the preset similarity conditions.

4. The power battery classification method based on climate zoning according to claim 1, characterized in that, The process of establishing the meteorological element threshold system corresponding to the operating conditions of the power battery includes: setting appropriate operating condition thresholds and stress thresholds according to the environmental boundaries corresponding to the charging, discharging and stationary operating conditions of the power battery; configuring the appropriate operating condition threshold as the judgment boundary for the time-series characteristics of meteorological elements falling into the normal classification interval; configuring the stress threshold as the judgment boundary for the time-series characteristics of meteorological elements falling into the stress classification interval; and writing the appropriate operating condition threshold and stress threshold under the same meteorological element into the same threshold record.

5. The power battery classification method based on climate zoning according to claim 4, characterized in that, The threshold records include meteorological element names, operating condition types, suitable operating condition thresholds, stress thresholds, and applicable zones for the thresholds; During the analysis, based on the name of the meteorological element, each threshold record is matched with the temporal characteristics of the corresponding meteorological element in the target area; If the statistical period of the time series characteristics of meteorological elements in the target area is inconsistent with the applicable zone of the threshold, the corresponding time series characteristics of meteorological elements shall be reselected according to the applicable zone of the threshold and used for subsequent overlay analysis.

6. The method for classifying power batteries based on climate zoning according to claim 1, characterized in that, The process of using temperature as the basic meteorological element in the time-series characteristics of the meteorological elements and performing point-by-point superposition analysis with temperature thresholds includes: comparing the temperature observation value with the suitable operating condition threshold and the stress threshold in the temperature threshold system point by point according to the sampling time; recording the suitable time period when the temperature observation value falls into the range defined by the suitable operating condition threshold; recording the stress time period when the temperature observation value reaches the boundary defined by the stress threshold; and generating the temperature stress analysis result based on the suitable time period and the stress time period.

7. The power battery classification method based on climate zoning according to claim 6, characterized in that, The process of generating the temperature stress analysis results based on suitable and stress periods includes: statistically analyzing the duration, frequency, and percentage of stress periods according to the sampling time within the same climate prototype zone; generating stress records for individual meteorological elements based on the duration, frequency, and percentage of stress periods; and writing the stress records into the temperature stress analysis results according to the meteorological element name and climate prototype zone.

8. The method for classifying power batteries based on climate zoning according to claim 1, characterized in that, The process of fusing the individual temperature stress index, humidity stress index, and pressure stress index according to preset weights for each meteorological element under different power battery operating conditions to generate a comprehensive stress index includes: The stress indices corresponding to temperature, humidity, and air pressure are obtained respectively, and then weighted and summed based on the preset weights to generate a comprehensive stress index. The comprehensive stress index is arranged according to the statistical period to generate an index sequence; The comprehensive stress index is identified based on the index sequence, and the time period when the stress period exceeds the stress threshold is used as the basis for production classification. The production classification result of the power battery is output according to the correspondence between the stress period and the production category.

9. The method for classifying power batteries based on climate zoning according to claim 1 or 8, characterized in that, The preset weights are determined based on the operating conditions of the power battery. The weight corresponding to humidity is higher under charging conditions than under discharging conditions, and the weight corresponding to temperature is higher under discharging conditions than under charging conditions.

10. The method for classifying power batteries based on climate zoning according to claim 1, characterized in that, The production category mapping conditions include the correspondence between index intervals and power battery production categories. When the comprehensive stress index falls within the same index interval, the corresponding power battery production category is output. When the comprehensive stress index spans at least two index intervals, the power battery production category is determined according to the index interval with higher environmental stress, and the power battery production category is output synchronously with the classification results and technical guidelines.

Images