Storage battery health state display method and system

Abstract

The invention discloses a health state display method and system for a storage battery, and relates to the technical field of electric power. The health state display method and system for the storage battery comprises the following steps: detecting a use environment in an external space of the storage battery by using a portable detection device, and determining a state influence factor of the storage battery; the method comprises the following steps: acquiring a grade primary judgment result, displaying the grade primary judgment result through a display screen, acquiring a grade secondary judgment result, displaying the grade secondary judgment result through the display screen, acquiring a grade tertiary judgment result, and displaying the grade tertiary judgment result through the display screen. The problems that in the prior art, a method for judging whether the storage battery needs to be replaced or not only through the service life is uncertain and prone to misjudgment, resource waste is caused, parameter data are displayed on a display screen, information is too complex, and a user is difficult to rapidly understand the health state of the storage battery are solved.

Description

Technical Field

[0001] The present invention relates to the field of electric power technology, and in particular to a method and system for displaying the health status of a battery. Background Art

[0002] Lead-acid batteries, or lead-acid batteries, are widely used rechargeable batteries that mainly use lead and its compounds as electrode materials and sulfuric acid as electrolyte. Lead-acid batteries have been widely used in many application fields due to their good charge and discharge characteristics and relatively low cost. In order to extend the service life of lead-acid batteries, improve their safety, optimize their performance, and reduce maintenance costs, it is necessary to regularly test the health status of lead-acid batteries and display their test data on the display screen to observe the data and evaluate their health status. In addition, health status assessment can also promote environmental protection by reducing premature battery scrapping and increasing the recycling rate, thereby reducing the negative impact on the environment. Progress in this research field can not only improve user satisfaction, but also promote the innovative development of monitoring technology and intelligent algorithms, making battery management systems more efficient and safe. Therefore, research on the health status assessment of lead-acid batteries has important practical significance and long-term value.

[0003] However, the existing technology has the problem that the method of judging whether the battery needs to be replaced only by the service life is uncertain and prone to misjudgment, resulting in waste of resources. In addition, the parameter data are all displayed on the display screen, and the information is too complicated, making it difficult for users to quickly understand the health status of the battery. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method and system for displaying the health status of a battery, which solves the problem that the prior art method of judging whether a battery needs to be replaced based only on its service life is uncertain and prone to misjudgment, resulting in waste of resources, and that all parameter data are displayed on the display screen and the information is too complex, making it difficult for users to quickly understand the health status of the battery.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method and system for displaying the health status of a battery, comprising the following steps: using a portable detection device to detect the use environment in the external space of the battery to determine the battery status influencing factors; using the portable detection device to detect the battery, analyzing the aging status of the battery, combining the battery status influencing factors to determine the aging status characteristic value, judging the battery aging status level based on the aging status characteristic value, obtaining the initial level judgment result, and displaying the initial level judgment result through a display screen, the initial level judgment result includes the battery aging status level being level one and the battery aging status level being level two: if the initial level judgment result is that the battery aging status level is level two, then performing an early warning process; if the initial level judgment result is that the battery aging status level is level one, then analyzing the battery usage status, combining the battery status influencing factors to determine the usage status characteristic value, The battery usage status level is judged based on the usage status characteristic value, and a secondary level judgment result is obtained. The secondary level judgment result is displayed on a display screen, and the secondary level judgment results are that the battery usage status level is level one and the battery usage status level is level two: if the secondary level judgment result is that the battery usage status level is level two, a warning process is performed; if the secondary level judgment result is that the battery usage status level is level one, the battery health status diagnostic value is determined in combination with the aging status characteristic value, and the battery health status level is judged based on the battery health status diagnostic value to obtain a tertiary level judgment result, and the tertiary level judgment result is displayed on a display screen, and the tertiary level judgment results include that the battery health status level is level one and the battery health status level is level two: if the tertiary level judgment result is that the battery health status level is level two, a warning process is performed; if the tertiary level judgment result is that the battery health status level is level one, the detection ends.

[0006] Furthermore, the use environment in the space outside the battery is detected to determine the factors affecting the battery state, including the following steps: obtaining use environment data, the use environment data including ambient temperature, ambient humidity, and sulfide concentration; obtaining reference use environment data, the reference use environment data including reference ambient temperature, reference ambient humidity, and reference sulfide concentration; obtaining use environment allowable deviation data, the use environment allowable deviation data including ambient temperature allowable deviation value and ambient humidity allowable deviation value; and comprehensively analyzing the use environment data to obtain the factors affecting the battery state.

[0007] Further, the determining of the aging state characteristic value comprises the following steps: obtaining battery aging data, wherein the battery aging data comprises battery capacity, battery electrochemical impedance value, and battery current density; obtaining battery definition aging data, wherein the battery definition aging data comprises definition battery capacity, definition battery electrochemical impedance value, and definition battery current density; and comprehensively analyzing the battery aging data, the battery definition aging data, and battery state influencing factors to obtain the aging state characteristic value.

[0008] Further, judging the battery aging state level based on the aging state characteristic value and obtaining the initial level judgment result includes the following steps: comparing the aging state characteristic value with the aging state judgment threshold stored in the database; if the aging state characteristic value is less than the aging state judgment threshold, the battery is aged normally, and the initial level judgment result is that the battery aging state level is level one, and the secondary level judgment is continued; if the aging state characteristic value is not less than the aging state judgment threshold, the battery is abnormally aged, and the initial level judgment result is that the battery aging state level is level two, and early warning processing is performed.

[0009] Furthermore, the battery usage status is analyzed, and the usage status characteristic value is determined in combination with the battery status influencing factors, including the following steps: obtaining usage status data, the usage status data including the battery temperature gradient, polarization voltage, and electrode surface charge density; obtaining usage status definition data, the usage status definition data including defining the battery temperature gradient, defining the polarization voltage, and defining the electrode surface charge density; and comprehensively analyzing the usage status data, the usage status definition data, and the battery status influencing factors to obtain the usage status characteristic value.

[0010] Furthermore, the calculation formula of the usage status characteristic value is:

[0011]

[0012] Where Ztz is the characteristic value of the use state, Wt1 is the battery temperature gradient, Jd1 is the polarization voltage, Dh1 is the electrode surface charge density, Wt0 is the defined battery temperature gradient, Jd0 is the defined polarization voltage, Dh0 is the defined charge density on the electrode surface, is the battery status influencing factor.

[0013] Furthermore, the method of judging the battery usage status level based on the usage status characteristic value and obtaining the secondary level judgment result includes the following steps: comparing the usage status characteristic value with the usage status determination threshold stored in the database; if the usage status characteristic value is greater than the usage status determination threshold, the battery usage status is good, and the secondary level judgment result is that the battery usage status level is level one, and the third level judgment is continued; if the usage status characteristic value is not greater than the usage status determination threshold, the battery usage status is poor, and the secondary level judgment result is that the battery usage status level is level two, and early warning processing is performed.

[0014] Further, the determining of the battery health state diagnostic value comprises the following steps: comprehensively analyzing the aging state characteristic value and the usage state characteristic value to obtain the battery health state diagnostic value;

[0015] The calculation formula of the battery health status diagnostic value is:

[0016]

[0017] Wherein, Jkz is the battery health status diagnostic value, Lhz is the aging status characteristic value, Ztz is the usage status characteristic value, α1 is the weight factor of Lhz stored in the database, and α2 is the weight factor of Jkz stored in the database.

[0018] Furthermore, the battery health status level is judged based on the battery health status diagnostic value to obtain three level judgment results, including the following steps: comparing the battery health status diagnostic value with the battery health status diagnostic threshold stored in the database; if the battery health status diagnostic value is less than the battery health status diagnostic threshold, the three level judgment results are that the battery health status level is level two, and early warning processing is performed; if the battery health status diagnostic value is not less than the battery health status diagnostic threshold, the three level judgment results are that the battery health status level is level one, and the detection ends.

[0019] A battery health status display system includes an environment detection module, an aging detection module, a usage status detection module and a comprehensive evaluation module, wherein: the environment detection module is used to detect the usage environment in the external space of the battery using a portable detection device to determine the battery status influencing factor; the aging detection module is used to detect the battery using the portable detection device, analyze the aging status of the battery, determine the aging status characteristic value in combination with the battery status influencing factor, judge the battery aging status level based on the aging status characteristic value, obtain the level initial judgment result, and display the level initial judgment result through a display screen, wherein the level initial judgment result includes the battery aging status level of level one and the battery aging status level of level two: if the level initial judgment result is that the battery aging status level is level two, then an early warning process is performed; the usage status detection module is used to analyze the battery usage status if the level initial judgment result is that the battery aging status level is level one, and determine the battery status influencing factor in combination with the battery status influencing factor , determine the usage status characteristic value, judge the battery usage status level based on the usage status characteristic value, obtain the secondary level judgment result, and display the secondary level judgment result through a display screen, wherein the secondary level judgment result is that the battery usage status level is level one and the battery usage status level is level two: if the secondary level judgment result is that the battery usage status level is level two, then perform early warning processing; a comprehensive assessment module is used for, if the secondary level judgment result is that the battery usage status level is level one, then combine the aging status characteristic value to determine the battery health status diagnosis value, judge the battery health status level based on the battery health status diagnosis value, obtain the tertiary level judgment result, and display the tertiary level judgment result through a display screen, wherein the tertiary level judgment result includes that the battery health status level is level one and the battery health status level is level two: if the tertiary level judgment result is that the battery health status level is level two, then perform early warning processing, and if the tertiary level judgment result is that the battery health status level is level one, the detection ends.

[0020] The present invention has the following beneficial effects:

[0021] The method and system for displaying the health status of a battery can automatically evaluate the health status of the battery by collecting the operating information of the battery and displaying it on a display screen, and directly display the evaluation result on the display screen, thereby solving the uncertainty, misjudgment and resource waste problems existing in the traditional method of judging whether the battery needs to be replaced based on its service life, providing technical support and replacement reference for the operating status of the backup power supply of automation equipment, thereby making timely maintenance or replacement decisions, reducing operation and maintenance costs, and avoiding greater losses, greatly improving the healthy operation level of the backup power supply of automation equipment, providing effective assistance for fault isolation and self-healing of the distribution network, and intuitively displaying the results of detection and evaluation, so that users can quickly understand the health status of the battery.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a flow chart of a method for displaying the health status of a battery.

[0024] Figure 2 This is a module diagram of a battery health status display system according to the present invention. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] See also Figure 1 The embodiment of the present invention provides a technical solution: a method and system for displaying the health status of a battery, comprising the following steps:

[0027] A portable detection device is used to detect the use environment in the external space of the battery to determine the factors affecting the battery status.

[0028] The portable detection device includes a microcontroller, sensors (temperature sensor, humidity sensor, gas sensor, etc.), a display screen (LCD or OLED screen), and a detection module. The microcontroller is responsible for collecting sensor data, performing real-time processing and analysis to determine the health status of the battery. The sensor is used to detect the parameter values ​​required during the health status detection process. The display screen is used to display the results of real-time processing and analysis by the microcontroller. The detection module is used to obtain battery status data.

[0029] Obtain usage environment data, which includes ambient temperature, ambient humidity, and sulfide concentration; obtain reference usage environment data, which includes reference ambient temperature, reference ambient humidity, and reference sulfide concentration; obtain allowable deviation data of the usage environment, which includes allowable deviation value of ambient temperature and allowable deviation value of ambient humidity; conduct a comprehensive analysis on the usage environment data to obtain factors affecting the battery status.

[0030] The calculation formula of the battery status influencing factor is:

[0031]

[0032] In the formula, is the battery status influencing factor, W1 is the ambient temperature, W0 is the reference ambient temperature, ΔW is the allowable deviation of the ambient temperature, S1 is the ambient humidity, S0 is the reference ambient humidity, ΔS is the allowable deviation of the ambient humidity, H1 is the sulfide concentration, H0 is the reference sulfide concentration, and e is a natural constant.

[0033] Ambient temperature refers to the temperature of the battery's external environment, which affects the battery's chemical reaction rate, conductivity and internal resistance. When the temperature is normal, the reaction rate can be maximized and the battery performance can be improved. However, too high or too low temperature will accelerate the aging of the battery and increase the self-discharge rate. In more serious cases, it will cause the battery to malfunction or fail. When testing the battery's external environment, use a temperature sensor to detect the temperature around the battery.

[0034] Ambient humidity refers to the humidity in the battery's external environment. Its value will affect the battery's corrosion rate and electrochemical reaction. When testing the battery's external environment, a humidity sensor is used to directly measure the humidity of the battery's working environment. When the humidity is too high, the risk of corrosion of the battery's internal and external circuits increases, resulting in performance degradation.

[0035] Sulfide concentration refers to the content of sulfide in the external environment of the battery, usually expressed as mass concentration. Sulfide is a compound containing sulfur, and the most common sulfide is hydrogen sulfide. During the charging and discharging process of the battery, especially in the case of overcharging, there is a phenomenon of producing hydrogen and hydrogen sulfide gas. If the battery is used in a poorly ventilated space, the gas is difficult to diffuse, which will lead to excessive concentration accumulation, resulting in battery corrosion, unstable reaction or performance degradation. When performing external environmental testing on the battery, a gas sensor is used to monitor the sulfide concentration in the environment.

[0036] Obtain the external use environment data (ambient temperature, humidity, sulfide concentration) and reference environment data of the battery, evaluate the impact of the external environment of the battery on the battery performance from multiple aspects, and provide accurate basic data for the subsequent battery health status analysis. Calculate the absolute difference between the current ambient temperature and the reference ambient temperature, and use the ambient temperature allowable deviation value to standardize the difference, so as to evaluate the degree of influence of the external ambient temperature of the battery on the battery performance status. The ratio of sulfide concentration to reference sulfide concentration directly reflects the accumulation of sulfides in the external environment of the battery, and relatively high concentrations will have adverse effects on the battery. The above-mentioned influencing factors are combined through exponential functions, so that relatively small changes in the influencing factors can still have a significant impact on the overall assessment, thereby reflecting the sensitivity of the environment to the battery status, which can timely reflect the true health status of the battery and help to better judge the working status and health of the battery in the future.

[0037] A portable detection device is used to detect the battery, and the aging state of the battery is analyzed. The aging state characteristic value is determined in combination with the battery state influencing factor. The battery aging state level is judged based on the aging state characteristic value, and a preliminary level judgment result is obtained. The preliminary level judgment result is displayed on a display screen, and the preliminary level judgment result includes the battery aging state level one and the battery aging state level two: if the preliminary level judgment result is that the battery aging state level is level two, an early warning process is performed; if the preliminary level judgment result is that the battery aging state level is level one, the battery usage status is analyzed.

[0038] The battery aging data is obtained, and the battery aging data includes the battery capacity, the battery electrochemical impedance value, and the battery current density; the battery definition aging data is obtained, and the battery definition aging data includes the definition battery capacity, the definition battery electrochemical impedance value, and the definition battery current density; the battery aging data, the battery definition aging data, and the battery state influencing factors are comprehensively analyzed to obtain the aging state characteristic value.

[0039] The calculation formula of the aging state characteristic value is:

[0040]

[0041] Wherein, Lhz is the characteristic value of the aging state, R1 is the battery capacity, K1 is the battery electrochemical impedance value, L1 is the battery current density, R0 is the defined battery capacity, K0 is the defined battery electrochemical impedance value, and L0 is the defined battery current density.

[0042] The aging state characteristic value is compared with the aging state judgment threshold stored in the database. If the aging state characteristic value is less than the aging state judgment threshold, the battery is aged normally, and the initial level judgment result is that the battery aging state level is level one, and the secondary level judgment is continued; if the aging state characteristic value is not less than the aging state judgment threshold, the battery is abnormally aged, and the initial level judgment result is that the battery aging state level is level two, and early warning processing is performed.

[0043] Battery capacity refers to the ability of a battery to store charge, usually measured in ampere-hours, and it characterizes the duration of current that a battery can provide after being fully charged. Changes in capacity usually reflect the health and aging of the battery. The electrochemical impedance value of a battery refers to the resistance of the battery to changes in current during the charge and discharge process, usually expressed in ohms. The impedance value can provide information about the chemical reactions and physical state of the battery. Higher impedance values ​​usually indicate aging or damage. Battery current density refers to the current passing through the battery per unit area, usually expressed in A / m 2Represents. Current density is related to discharge performance and charging efficiency, and can reflect the performance of the battery under working conditions. These parameters are usually obtained through detection modules in portable detection devices, such as battery testers, impedance analyzers, etc. By analyzing the capacity, electrochemical impedance value and current density of the battery, the health status and expected life of the battery can be objectively evaluated, providing a data basis for calculating the characteristic value of the aging state and predicting the performance degradation of the battery in advance.

[0044] The ratio of the battery electrochemical impedance value to the defined battery electrochemical impedance value reflects the relationship between the current battery's performance in the electrochemical reaction and its health state. A ratio greater than 1 indicates that the battery's internal impedance has increased, and there may be aging or damage. At this time, the value of this part is high, resulting in an increase in the entire aging state characteristic value. By calculating the change in current density relative to the baseline value, the efficiency change of the battery during actual use can be quantified. If the current density decreases or increases significantly, it indicates that the battery performance has deteriorated, which will also increase the value of the aging state characteristic value. The ratio of the battery capacity to the defined battery capacity is logarithmically processed, and the significant impact of a certain degree of capacity change on the aging state is emphasized in a nonlinear way, which can avoid the neglect of the impact of small but still important capacity changes. Combined with the battery state influencing factors, it helps to fine-tune according to the specific use environment, so that the aging state characteristic value is closer to the actual state.

[0045] By comparing the aging state characteristic value with the aging state judgment threshold preset in the database, a clear judgment standard is provided to determine the health state of the battery and effectively distinguish between normal and abnormal aging states. For batteries with a level 1 aging state, even if they are judged to be normal, a second judgment can still be made, combining the use of state characteristic values ​​to achieve a more detailed assessment to ensure the accuracy of their health state assessment. For batteries with a level 2 aging state, the system directly outputs the results on the display and requires necessary treatment measures, such as repair or replacement.

[0046] It enables inspectors to understand the health status of batteries at a glance and quantify the aging process of batteries, so as to make timely maintenance or replacement decisions and reduce operation and maintenance costs. It can identify problems at the early stage of aging, so as to take measures to repair or replace batteries and avoid greater losses. It also makes the performance evaluation of different batteries comparable, and managers can make reasonable comparisons of batteries of different models or manufacturers through unified aging status characteristic values.

[0047] In combination with the battery state influencing factors, the usage state characteristic value is determined, the battery usage state level is judged based on the usage state characteristic value, and the level secondary judgment result is obtained. The level secondary judgment result is displayed on a display screen, and the level secondary judgment results are the battery usage state level is level one and the battery usage state level is level two: if the level secondary judgment result is that the battery usage state level is level two, then early warning processing is performed; if the level secondary judgment result is that the battery usage state level is level one, then the aging state characteristic value is combined.

[0048] Acquire usage status data, which includes battery temperature gradient, polarization voltage, and electrode surface charge density; acquire usage status definition data, which includes defined battery temperature gradient, defined polarization voltage, and defined electrode surface charge density; conduct comprehensive analysis on the usage status data, usage status definition data, and battery status influencing factors to obtain usage status characteristic values.

[0049] The calculation formula of the state characteristic value is:

[0050]

[0051] Wherein, Ztz is the characteristic value of the usage state, Wt1 is the battery temperature gradient, Jd1 is the polarization voltage, Dh1 is the electrode surface charge density, Wt0 is the defined battery temperature gradient, Jd0 is the defined polarization voltage, and Dh0 is the defined charge density on the electrode surface.

[0052] The usage status characteristic value is compared with the usage status judgment threshold stored in the database. If the usage status characteristic value is greater than the usage status judgment threshold, the battery usage status is good, and the secondary level judgment result is that the battery usage status level is level one, and the third level judgment is continued; if the usage status characteristic value is not greater than the usage status judgment threshold, the battery usage status is poor, and the secondary level judgment result is that the battery usage status level is level two, and early warning processing is performed.

[0053] Battery temperature gradient refers to the degree of temperature change at different locations inside or on the surface of the battery. The change in temperature will directly affect the chemical reaction speed and efficiency of the battery, and then affect the charging and discharging performance and service life. The actual operating temperature of the battery and the temperature difference at different locations are monitored by temperature sensors or thermal imaging equipment. Polarization voltage refers to the voltage drop caused by chemical reactions and charge transfer impedance on the electrode surface during the charging and discharging process of the battery. It reflects the internal resistance state of the battery during discharge or charging. It affects the efficiency and output capacity of the battery, and can be obtained by recording the battery terminal voltage and internal resistance in real time during the charging and discharging process through a voltage sensor. The electrode surface charge density refers to the amount of charge stored per unit area, which is closely related to the properties of the electrode material and the energy storage capacity, and affects the electrochemical performance of the battery. The charge state of the electrode surface is evaluated by electrochemical measurements (such as voltammetry or charge-volume ratio measurement).

[0054] By obtaining the battery temperature gradient, polarization voltage, and electrode surface charge density, the operating status of the battery can be fully reflected, and the battery performance under different working conditions can be explained. By introducing the state influencing factors for comprehensive analysis, the relationship between battery performance and external conditions can be more scientifically understood, supporting optimized management and maintenance decisions, helping to identify or predict battery performance bottlenecks, and developing targeted improvement strategies to improve operating efficiency and extend service life.

[0055] The formula mainly includes the calculation of proportional changes, which indicates the degree of deviation between the battery's operating state and the normal defined state. The introduction of battery state influencing factors improves the accuracy of the assessment and can reflect the dynamic health state of the battery under specific working conditions. The usage state characteristic value is calculated based on the inverse of the relative deviation. When the battery state is close to the normal value (that is, the deviation is small), the usage state characteristic value will be larger, and vice versa, showing a direct correlation between the health state and the degree of approximation, and comprehensively and truly reflecting the health value of the battery.

[0056] By establishing a comparison mechanism between the characteristic value of the usage status and the threshold, the health status of the battery can be quickly judged. The use of graded judgment helps to reasonably classify the health status of the battery, making the subsequent management and maintenance strategies more targeted and avoiding blind operations, thereby reducing the risk of future failures and improving safety. After the judgment, more analysis or monitoring can be carried out (three-level judgment), bringing higher adaptability and dynamic response capabilities.

[0057] Determine a battery health status diagnostic value, judge the battery health status level based on the battery health status diagnostic value, obtain three level judgment results, and display the three level judgment results on a display screen, the three level judgment results including a battery health status level of one and a battery health status level of two: if the three level judgment results are that the battery health status level is level two, perform early warning processing; if the three level judgment results are that the battery health status level is level one, the detection ends.

[0058] The aging state characteristic value and the usage state characteristic value are comprehensively analyzed to obtain the battery health state diagnosis value; the calculation formula of the battery health state diagnosis value is:

[0059]

[0060] Wherein, Jkz is the battery health status diagnostic value, Lhz is the aging status characteristic value, Ztz is the usage status characteristic value, α1 is the weight factor of Jkz stored in the database, and α2 is the weight factor of Ztz stored in the database.

[0061] The battery health status diagnostic value is compared with the battery health status diagnostic threshold stored in the database. If the battery health status diagnostic value is less than the battery health status diagnostic threshold, the result of the three-level judgment is that the battery health status level is level two, and early warning processing is performed; if the battery health status diagnostic value is not less than the battery health status diagnostic threshold, the result of the three-level judgment is that the battery health status level is level one, and the detection ends.

[0062] The battery health status diagnostic value is used to comprehensively evaluate the health status of the battery, and the usage status characteristic value reflects the performance of the battery under specific usage conditions. The aging status characteristic value indicates the degree of battery degradation caused by time or usage conditions. The use of logarithmic functions to comprehensively calculate the aging status characteristic value and the usage status characteristic value can make the changes in the battery health status diagnostic value present a smoother characteristic and avoid inaccurate evaluation caused by drastic fluctuations in values. When the two important factors are normal, a comprehensive judgment is made to ensure a comprehensive and accurate health status assessment. At the same time, the setting of "+1" can avoid the problem of the denominator being zero, ensure the stability of the calculation, and intuitively display the health status.

[0063] The above-mentioned set α1 and α2 are obtained from the database. According to the historical data, the historically measured aging state characteristic values, usage state characteristic values ​​and battery health status diagnostic values ​​are established, and the mapping set of aging state characteristic values, usage state characteristic values ​​and their corresponding weight factors is established to obtain the current α1 and α2.

[0064] Setting clear health status diagnostic thresholds, forming a simple and intuitive evaluation system, and displaying the results intuitively on the display screen makes the battery health status level judgment clear and easy to understand, which helps to make quick decisions, reduce potential failure risks, reduce maintenance costs and safety hazards, and thus ensure the safety and reliability of the equipment. In addition, dynamic observation of the status and real-time adjustment of strategies ensure the scientificity and timeliness of the evaluation and implementation measures, and adapt to changing environments and usage conditions. It improves the healthy operation level of the backup power supply of automation equipment and provides effective support for fault isolation and self-healing of the distribution network.

[0065] A battery health status display system, such as Figure 2 As shown, it includes an environment detection module, an aging detection module, a usage status detection module and a comprehensive evaluation module, wherein: the environment detection module is used to use a portable detection device to detect the usage environment in the external space of the battery and determine the battery status influencing factor; the aging detection module is used to use the portable detection device to detect the battery, analyze the aging status of the battery, determine the aging status characteristic value in combination with the battery status influencing factor, judge the battery aging status level based on the aging status characteristic value, obtain the level initial judgment result, and display the level initial judgment result through the display screen, the level initial judgment result includes the battery aging status level of level one and the battery aging status level of level two: if the level initial judgment result is that the battery aging status level is level two, then early warning processing is performed; the usage status detection module is used to analyze the battery usage status if the level initial judgment result is that the battery aging status level is level one, and determine the usage status in combination with the battery status influencing factor. state characteristic value, judging the battery usage status level based on the usage status characteristic value, obtaining the secondary level judgment result, and displaying the secondary level judgment result through a display screen, wherein the secondary level judgment result is that the battery usage status level is level one and the battery usage status level is level two: if the secondary level judgment result is that the battery usage status level is level two, then early warning processing is performed; a comprehensive assessment module is used for, if the secondary level judgment result is that the battery usage status level is level one, combining the aging state characteristic value, determining the battery health status diagnosis value, judging the battery health status level based on the battery health status diagnosis value, obtaining the tertiary level judgment result, and displaying the tertiary level judgment result through a display screen, wherein the tertiary level judgment result includes that the battery health status level is level one and the battery health status level is level two: if the tertiary level judgment result is that the battery health status level is level two, then early warning processing is performed, and if the tertiary level judgment result is that the battery health status level is level one, the detection ends.

[0066] In a specific embodiment, in the external usage environment data of the battery, W1 is 20°C, S1 is 42%, and H1 is 9.5ppm. In the reference usage environment data, W0 is 25°C, S0 is 50%, and H0 is 10ppm. In the allowable deviation data of the usage environment, ΔW is 4°C, ΔS is 10%, and the battery state influencing factor is calculated to be 20.09.

[0067] In the battery aging data, R1 is 90Ah, K1 is 3mΩ, and L1 is 1.1A / m 2 In the battery aging data, R0 is 100Ah, K0 is 5mΩ, and L0 is 1.0A / m 2 , the aging state characteristic value is calculated to be 20.64, and the aging state judgment threshold is 20.86. Since the aging state characteristic value is less than the aging state judgment threshold, the battery aging is normal, and the initial judgment of the battery health state level is level one, and the second judgment is continued.

[0068] In the usage status data, Wt1 is 20℃, Jd1 is 0.17V, and Dh1 is 1.15C / m 2 In the usage status definition data, Wt0 is 23℃, Jd0 is 0.2V, and Dh0 is 1.3C / m 2 , the usage status characteristic value is calculated to be 20.57, and the usage status judgment threshold is 20.47. Since the usage status characteristic value is greater than the usage status judgment threshold, the battery usage status is good, and the battery health status level of the second judgment is level one, and the third judgment is continued.

[0069] Comprehensively analyzing the aging state characteristic value and the usage state characteristic value, α1 is 0.4, α2 is 0.6, and the battery health state diagnostic value is calculated to be 0.37, and the battery health state diagnostic threshold is 0.38. Since the battery health state diagnostic value is less than the battery health state diagnostic threshold, the output result is that the health state level is level 2, and processing is performed.

[0070] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0071] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0072] The present invention is described with reference to flowcharts and / or block diagrams of systems, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0073] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0074] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0075] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0076] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for displaying the health status of a battery, characterized in that: The following steps are involved: Use a portable detection device to detect the use environment in the battery's external space to determine the factors affecting the battery status; The battery is tested by using a portable testing device, the aging state of the battery is analyzed, the aging state characteristic value is determined in combination with the battery state influencing factor, the aging state grade of the battery is judged based on the aging state characteristic value, and the grade initial judgment result is obtained, and the grade initial judgment result is displayed on a display screen, wherein the grade initial judgment result includes the battery aging state grade of one and the battery aging state grade of two: If the initial level judgment result is that the battery aging state level is level 2, an early warning process is performed; If the initial level judgment result is that the battery aging state level is level one, the battery usage state is analyzed, and the usage state characteristic value is determined in combination with the battery state influencing factor. The battery usage state level is judged based on the usage state characteristic value, and the level secondary judgment result is obtained. The level secondary judgment result is displayed on the display screen, and the level secondary judgment results are that the battery usage state level is level one and the battery usage state level is level two: If the secondary level judgment result is that the battery usage status level is level 2, an early warning process is performed; If the secondary level judgment result is that the battery usage status level is level one, then the battery health status diagnostic value is determined in combination with the aging status characteristic value, and the battery health status level is judged based on the battery health status diagnostic value, and the level tertiary level judgment result is obtained. The level tertiary level judgment result is displayed on the display screen, and the level tertiary level judgment results include the battery health status level being level one and the battery health status level being level two: If the result of the three level judgments is that the battery health status level is level 2, an early warning process is performed. If the result of the three level judgments is that the battery health status level is level 1, the detection ends.

2. A method for displaying the health status of a battery according to claim 1, characterized in that: Testing the use environment in the external space of the battery to determine the factors affecting the battery status includes the following steps: Acquiring usage environment data, wherein the usage environment data includes ambient temperature, ambient humidity, and sulfide concentration; Acquiring reference use environment data, wherein the reference use environment data includes reference environment temperature, reference environment humidity, and reference sulfide concentration; Acquiring use environment allowable deviation data, wherein the use environment allowable deviation data includes an ambient temperature allowable deviation value and an ambient humidity allowable deviation value; The environmental data will be used for comprehensive analysis to obtain the factors affecting the battery status.

3. A method for displaying the health status of a battery according to claim 1, characterized in that: Determining the aging state characteristic value comprises the following steps: Acquiring battery aging data, wherein the battery aging data includes battery capacity, battery electrochemical impedance value, and battery current density; Acquire battery defined aging data, wherein the battery defined aging data includes defined battery capacity, defined battery electrochemical impedance value, and defined battery current density; The battery aging data, battery definition aging data and battery state influencing factors are comprehensively analyzed to obtain the aging state characteristic value.

4. A method for displaying the health status of a battery according to claim 1, characterized in that: The method of judging the battery aging state level based on the aging state characteristic value and obtaining the initial level judgment result includes the following steps: The aging state characteristic value is compared with the aging state judgment threshold stored in the database. If the aging state characteristic value is less than the aging state judgment threshold, the battery aging is normal, and the initial level judgment result is that the battery aging state level is level one, and the secondary level judgment is continued; If the aging state characteristic value is not less than the aging state judgment threshold, the battery is abnormally aged, and the initial level judgment result is that the battery aging state level is level 2, then early warning processing is performed.

5. A method for displaying the health status of a battery according to claim 1, characterized in that: Analyzing the battery usage status and combining the battery status influencing factors to determine the usage status characteristic value includes the following steps: Acquiring usage status data, wherein the usage status data includes battery temperature gradient, polarization voltage, and electrode surface charge density; Acquiring usage status definition data, wherein the usage status definition data includes defining a battery temperature gradient, defining a polarization voltage, and defining a charge density on an electrode surface; The usage status data, usage status definition data and battery status influencing factors are comprehensively analyzed to obtain the usage status characteristic value.

6. A method for displaying the health status of a battery according to claim 1, characterized in that: The calculation formula of the usage status characteristic value is: Where Ztz is the characteristic value of the use state, Wt1 is the battery temperature gradient, Jd1 is the polarization voltage, Dh1 is the electrode surface charge density, Wt0 is the defined battery temperature gradient, Jd0 is the defined polarization voltage, Dh0 is the defined charge density on the electrode surface, is the battery status influencing factor.

7. A method for displaying the health status of a battery according to claim 1, characterized in that: The method of judging the battery usage status level based on the usage status characteristic value and obtaining the secondary level judgment result includes the following steps: Compare the usage status characteristic value with the usage status determination threshold stored in the database. If the usage status characteristic value is greater than the usage status determination threshold, the battery usage status is good, and the secondary level determination result is that the battery usage status level is level one, and continue to perform the third level determination; If the usage status characteristic value is not greater than the usage status determination threshold, the battery usage status is poor, and the secondary level determination result is that the battery usage status level is level 2, and an early warning process is performed.

8. A method for displaying the health status of a battery according to claim 1, characterized in that: Determining the battery health status diagnostic value comprises the following steps: Comprehensively analyze the aging state characteristic value and the usage state characteristic value to obtain the battery health state diagnosis value; The calculation formula of the battery health status diagnostic value is: Wherein, Jkz is the battery health status diagnostic value, Lhz is the aging status characteristic value, Ztz is the usage status characteristic value, α1 is the weight factor of Lhz stored in the database, and α2 is the weight factor of Ztz stored in the database.

9. A method for displaying the health status of a battery according to claim 1, characterized in that: The method of judging the battery health status level based on the battery health status diagnosis value and obtaining three level judgment results includes the following steps: The battery health status diagnosis value is compared with the battery health status diagnosis threshold stored in the database. If the battery health status diagnosis value is less than the battery health status diagnosis threshold, the result of the third level judgment is that the battery health status level is level 2, and an early warning process is performed; If the battery health status diagnosis value is not less than the battery health status diagnosis threshold, the result of the third level judgment is that the battery health status level is level one, and the detection ends.

10. A battery health status display system, used in a battery health status display method according to any one of claims 1 to 9, characterized in that: It includes environment detection module, aging detection module, usage status detection module and comprehensive evaluation module, among which: An environmental detection module is used to detect the use environment in the external space of the battery using a portable detection device to determine the factors affecting the battery status; The aging detection module is used to detect the battery using a portable detection device, analyze the aging state of the battery, determine the aging state characteristic value in combination with the battery state influencing factor, judge the battery aging state level based on the aging state characteristic value, obtain the level initial judgment result, and display the level initial judgment result through a display screen, wherein the level initial judgment result includes the battery aging state level 1 and the battery aging state level 2: If the initial level judgment result is that the battery aging state level is level 2, an early warning process is performed; The usage status detection module is used to analyze the usage status of the battery if the initial level judgment result is that the battery aging status level is level one, determine the usage status characteristic value in combination with the battery status influencing factor, judge the battery usage status level based on the usage status characteristic value, obtain the level secondary judgment result, and display the level secondary judgment result through the display screen, wherein the level secondary judgment result is that the battery usage status level is level one and the battery usage status level is level two: If the secondary level judgment result is that the battery usage status level is level 2, an early warning process is performed; The comprehensive assessment module is used to determine the battery health status diagnosis value in combination with the aging status characteristic value if the secondary level judgment result is that the battery usage status level is level 1, judge the battery health status level based on the battery health status diagnosis value, obtain the level 3 judgment result, and display the level 3 judgment result on the display screen, wherein the level 3 judgment results include the battery health status level 1 and the battery health status level 2: If the result of the three level judgments is that the battery health status level is level 2, an early warning process is performed. If the result of the three level judgments is that the battery health status level is level 1, the detection ends.

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