CN-121978551-A - Method and system for detecting impact resistance of lead-acid storage battery in heavy load environment

Abstract

The invention belongs to the technical field of storage battery detection, and particularly provides a method and a system for detecting impact resistance of a lead-acid storage battery in a heavy-load environment, wherein the method comprises the steps of detecting initial performance parameters of a sample; the method comprises the steps of simulating construction of a heavy load environment impact device, setting impact detection parameters according to actual conditions of the heavy load environment, starting an impact excitation generation mechanism to perform impact detection on a sample, wherein the impact detection comprises durability detection and instantaneous detection, taking the sample off an impact table after the impact detection is finished, performing appearance inspection again, performing performance parameter detection on the sample, recording detection results, analyzing performance parameter changes in the impact process of the sample and performance parameters after the impact, extracting characteristic indexes, and evaluating the impact resistance of the lead-acid storage battery under the heavy load environment according to the characteristic indexes. According to the invention, comprehensive and accurate evaluation of the impact resistance of the storage battery is realized through multidirectional impact simulation, multi-parameter dynamic monitoring and intelligent comprehensive evaluation.

Inventors

• ZHOU XINGHUA
• XU CHENG
• ZHANG YUANDONG
• ZHOU ZHIHANG
• LIU DI
• LIN SHUSHENG

Assignees

• 中国长江电力股份有限公司
• 珠海伊托科技有限公司

Dates

Publication Date

20260505

Application Date

20260130

Claims (15)

1. 1. The method for detecting the impact resistance of the lead-acid storage battery in the heavy-load environment is characterized by comprising the following steps of: firstly, preparing a sample, namely selecting a lead-acid storage battery sample to be detected, performing appearance inspection to ensure that the sample is not damaged obviously; step two, building an impact device simulating a heavy load environment, wherein the building comprises building an impact table, a sample fixing mechanism, an impact excitation generating mechanism and a parameter monitoring mechanism; setting impact detection parameters according to the actual conditions of heavy-duty environments; Fixing a prepared lead-acid battery sample on an impact table through a sample fixing mechanism, starting an impact excitation generating mechanism, and performing impact detection on the sample according to set impact detection parameters; Step five, detecting the performance of the sample after impact detection, namely taking the sample off an impact table after the impact detection is finished, and carrying out appearance inspection again; And step six, impact resistance evaluation, which is to analyze the performance parameter change in the sample impact process and the performance parameter after impact, extract characteristic indexes and evaluate the impact resistance of the lead-acid storage battery in a heavy load environment according to the characteristic indexes.
2. 2. The method for detecting the impact resistance of a lead-acid storage battery in a heavy-duty environment according to claim 1, wherein in the first step, the initial performance parameters include battery capacity and internal resistance.
3. 3. The method for detecting the impact resistance of a lead-acid battery under a heavy load environment according to claim 1, wherein in the third step, the impact detection parameters include an impact acceleration range, an impact duration range, an impact frequency range and an impact direction, and the impact direction includes a vertical direction, a horizontal direction and an oblique direction.
4. 4. The method for detecting the impact resistance of the lead-acid storage battery in the heavy-load environment according to claim 1, wherein in the fourth step, the parameter monitoring mechanism records the capacity, the internal resistance, the temperature, the instantaneous discharge current and the output voltage data of the sample in the impact process in real time.
5. 5. The method for detecting the impact resistance of the lead-acid storage battery under the heavy-load environment according to claim 1, wherein in the fourth step, the specific operation of the durability detection comprises the steps of setting impact detection parameters, respectively impacting three lead-acid storage battery samples from the vertical direction, the horizontal direction and the inclined direction, and recording capacity change data, internal resistance change data and battery surface temperature change data of each sample in different directions during impact.
6. 6. The method for detecting the impact resistance of the lead-acid storage battery under the heavy-load environment according to claim 1, wherein in the fourth step, the specific operation of instantaneous detection comprises the steps of setting impact detection parameters, respectively impacting three lead-acid storage battery samples from the vertical direction, the horizontal direction and the inclined direction, and recording the instantaneous discharge current and the output voltage drop amplitude of each sample at impact moments in different directions.
7. 7. The method for detecting the impact resistance of the lead-acid storage battery in the heavy-load environment according to claim 1, wherein in the fifth step, the performance parameters of the detected sample comprise battery capacity and internal resistance, and the detection method is consistent with the detection method of the initial performance parameters in the first step.
8. 8. The method for detecting the impact resistance of a lead-acid battery under a heavy load environment according to claim 1, wherein in the step six, the impact resistance evaluation comprises a durability impact detection analysis and an instantaneous impact detection analysis, the impact resistance of the lead-acid battery under the heavy load environment is judged to be qualified only when the durability impact detection is qualified and the instantaneous impact detection is qualified, any detection item is not qualified, and the overall impact resistance is judged to be not qualified.
9. 9. The method for detecting the impact resistance of a lead-acid storage battery in a heavy-duty environment according to claim 8, wherein the endurance impact detection analysis comprises the following sub-steps: S1, acquiring the capacity and the internal resistance of a lead-acid battery at the end of the endurance detection process of different impact directions, comparing the capacity and the internal resistance of the lead-acid battery at the end with initial data, acquiring capacity attenuation and internal resistance increase, respectively comparing the capacity attenuation and the internal resistance increase with rated capacity attenuation and rated internal resistance increase set by a system, and if any one of the capacity attenuation and the internal resistance increase is greater than or equal to rated capacity attenuation and rated internal resistance increase set by the system, judging that the endurance detection of the sample in the corresponding impact direction is unqualified; S2, respectively acquiring data of capacity change along with time, data of internal resistance change along with time and data of battery surface temperature change along with time in the durability detection process of the current impact direction for the sample judged to be qualified in the step S1, constructing a durability impact potential failure index, further judging whether the durability impact detection of the lead-acid storage battery in the current direction is qualified or not, evaluating whether the durability impact detection of the lead-acid storage battery in any impact direction is not qualified if the detection result of the lead-acid storage battery in any impact direction is not qualified, and entering the comprehensive durability impact evaluation if all the detection results of the lead-acid storage battery in all the directions are qualified.
10. 10. The method for detecting the impact resistance of a lead-acid storage battery in a heavy-duty environment according to claim 9, wherein in the step S2, the calculation formula of the potential failure index of the durability impact is: ; wherein i is equal to 1,2 or 3, respectively representing the current impact direction as the vertical direction, the horizontal direction and the oblique direction, Representing the function of capacity over time during the current impact direction durability test, Represents the function of the internal resistance with time during the current impact direction durability detection, Represents the function of the temperature of the battery surface over time during the current impact direction durability test, 、 And Respectively represents a standard function of capacity change with time, a standard function of internal resistance change with time and a standard function of battery surface temperature change with time in the durability detection process of the current impact direction set by the system, And Respectively represent the weight coefficients corresponding to the capacity and the internal resistance, For the temperature change penalty factor, 、 And Respectively representing the capacity, internal resistance and temperature state reference values, A current impact direction durability impact potential failure index, 、 The start time and the end time of the current impact direction durability detection, respectively.
11. 11. The method for detecting the impact resistance of a lead-acid battery under a heavy load environment according to claim 10, wherein in the step S2, the method comprises the following steps of Comparing with the corresponding threshold set by the system, if And if the durability impact detection value is larger than or equal to the corresponding threshold value set by the system, the durability impact detection value of the lead-acid storage battery in the current direction is not qualified.
12. 12. The method for detecting the impact resistance of the lead-acid storage battery in the heavy-load environment according to claim 10, wherein the operation method for comprehensively evaluating the durability impact is as follows: calculating a durability impact comprehensive disqualification index coefficient, wherein the calculation formula is as follows: ; In the formula, To synthesize the index coefficient of disqualification for the durability impact Comparing with the corresponding threshold set by the system, if And if the durability impact detection value is larger than or equal to the corresponding threshold value set by the system, the durability impact detection value of the lead-acid storage battery is not qualified.
13. 13. The method for detecting the impact resistance of a lead-acid storage battery in a heavy-duty environment according to claim 8, wherein the instantaneous impact detection analysis comprises the following sub-steps: s1, carrying out instantaneous discharge current on each sample in each impact direction And the output voltage drop amplitude Respectively comparing the two parameters with corresponding independent thresholds, and judging that the instantaneous impact detection of the sample in the impact direction is unqualified if any parameter exceeds the corresponding independent threshold; s2, if the instantaneous discharge current in all directions And the output voltage drop amplitude And if the corresponding independent threshold value is not exceeded, the instantaneous impact comprehensive evaluation is entered.
14. 14. The method for detecting the impact resistance of the lead-acid storage battery in the heavy-load environment according to claim 13, wherein the operation method for comprehensively evaluating the instantaneous impact is as follows: Constructing an instantaneous impact comprehensive disqualification index coefficient calculation model, wherein the expression is as follows: ; Wherein, the And The instantaneous discharge current and the output voltage drop amplitude detected instantaneously for the current impact direction are respectively, And The weight coefficients corresponding to the current and the voltage are respectively; And comparing the calculated B with a set corresponding threshold value, and judging that the instantaneous impact detection of the lead-acid storage battery is unqualified if the B is larger than or equal to the threshold value.
15. 15. The system for detecting the impact resistance of the lead-acid storage battery in a heavy-load environment is characterized by being used for executing the method for detecting the impact resistance of the lead-acid storage battery in the heavy-load environment, and the method comprises the following steps: The device for simulating heavy load environment impact comprises an impact table, a sample fixing mechanism, an impact excitation generating mechanism and a parameter monitoring mechanism, wherein the sample fixing mechanism is arranged on the impact table and is used for fixing a lead-acid storage battery sample to be detected; the parameter monitoring mechanism is used for collecting data of capacity change of the sample along with time, data of internal resistance change along with time, data of battery surface temperature change along with time, instantaneous discharge current and descending amplitude of output voltage in real time in the impact process, and transmitting the collected data to the evaluation module; the evaluation module is used for analyzing the performance parameter change in the sample impact process and the performance parameter after impact, extracting the characteristic index, and evaluating the impact resistance of the lead-acid storage battery in the heavy load environment according to the characteristic index.

Description

Method and system for detecting impact resistance of lead-acid storage battery in heavy load environment Technical Field The invention belongs to the technical field of storage battery detection, and particularly relates to a method and a system for detecting impact resistance of a lead-acid storage battery in a heavy-load environment. Background The lead-acid storage battery has the outstanding advantages of low cost, high reliability, mature technology, excellent high-current discharge performance and the like, and is widely applied to heavy-duty equipment such as forklifts, loaders, heavy trucks and the like. In the actual running process of the heavy-load equipment, the storage battery needs to bear strong impact caused by frequent start and stop, road surface jolt, abrupt load change and the like for a long time, and the impact can directly cause the problems of deformation of an internal polar plate of the storage battery, falling of active substances, leakage of electrolyte and the like, so that the capacity of the storage battery can be seriously attenuated, the service life of the storage battery is shortened, and safety accidents such as short circuit, fire and the like can be possibly caused, so that the impact resistance of the lead-acid storage battery in the heavy-load environment is accurately and comprehensively detected, and the method is a key link for guaranteeing safe and stable running of the heavy-load equipment. However, the existing detection method for the impact resistance of the lead-acid storage battery has obvious limitations, and is difficult to meet the actual application requirements: 1. The evaluation dimension is single, and the comprehensiveness is lacking, namely the existing detection method mostly only focuses on the appearance damage condition of the storage battery after impact, such as shell rupture, leakage and the like, ignores the internal structural changes (such as polar plate displacement and diaphragm damage) and the dynamic changes of core performance parameters (such as capacity attenuation and internal resistance increase) of the storage battery during and after the impact, so that the impact resistance of the storage battery cannot be comprehensively evaluated, and the storage battery with partial internal damage but intact appearance can be misjudged as qualified, and is buried with potential safety hazards. 2. The impact direction is not covered fully, the working condition adaptability is poor, the impact born by the storage battery in a heavy-load environment is multidirectional, the impact comprises a vertical direction (gravity superposition impact), a horizontal direction (equipment running direction abrupt change impact) and an inclined direction (composite impact under complex road conditions), and the damage mechanism and the damage degree of the impact in different directions to the storage battery are obviously different. The existing detection method is generally only used for impact test in a single direction (mostly in a vertical direction), lacks of differential evaluation of multi-directional impact, is disjointed from the actual working condition, and cannot accurately reflect the impact resistance of the storage battery in a real use scene. 3. The evaluation mode is subjective, the quantification degree is low, the evaluation result of the existing detection method is mostly dependent on manual judgment, a standardized detection flow and an intelligent evaluation model are lacked, the impact resistance of the storage battery is difficult to accurately quantify, and large differences can exist in the judgment results of different detection personnel, so that the objectivity and reliability of the detection result are insufficient. Aiming at the defects of the prior art, the invention provides a method and a system for detecting the impact resistance of a lead-acid storage battery in a heavy-load environment, which realize comprehensive and accurate evaluation of the impact resistance of the storage battery and make up for the defects of the prior art through multi-directional impact simulation, multi-parameter dynamic monitoring and intelligent comprehensive evaluation. Disclosure of Invention The invention aims to solve the technical problem of providing a method and a system for detecting the impact resistance of a lead-acid storage battery in a heavy-load environment, and the comprehensive and accurate evaluation of the impact resistance of the storage battery is realized through multidirectional impact simulation, multi-parameter dynamic monitoring and intelligent comprehensive evaluation. In order to solve the technical problems, the technical scheme adopted by the invention is that the method for detecting the impact resistance of the lead-acid storage battery in the heavy-load environment comprises the following steps: firstly, preparing a sample, namely selecting a lead-acid storage battery sample to be detected, performing appear