A method, medium and system for desulfurization maintenance of a storage battery

Abstract

The present invention discloses a method, medium and system for desulfurization maintenance of a storage battery. The method includes: measuring the voltage, internal resistance and terminal post temperature of the storage battery in real time; calculating a first pulse coefficient based on the measured voltage, internal resistance and terminal post temperature of the storage battery; if the first pulse coefficient is greater than a first preset threshold, starting a pulse according to a first pulse parameter for the first desulfurization. According to the present invention, pulse desulfurization is started based on the accurately measured magnitudes of the voltage, internal resistance and terminal post temperature of the storage battery, and corresponding pulse intensity, frequency, duty cycle, hump peak-bottom amplitude and duration are set, so that desulfurization is more timely and a better desulfurization effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of desulfurization maintenance of storage batteries, and particularly relates to a desulfurization maintenance method, medium and system for storage batteries. Background Art

[0002] In recent years, the in-vivo and in-vitro measurement and control technologies of storage batteries have developed rapidly. In-vitro measurement and control of storage batteries is to place sensors outside the battery body to measure battery parameters such as charge and discharge current, internal resistance, voltage, and temperature. At the same time, the measured data can also be transmitted online to a processor for processing and control. In-vivo measurement and control is to set up a measurement and control circuit for battery state parameters inside the battery body. The data obtained in this way is often more accurate than in-vitro measurement and control, and the operation is convenient and easy to apply. Although the existing in-vivo measurement and control technology can obtain relatively accurate state parameters and process the parameters, when the battery is sulfated, it cannot carry out desulfurization maintenance in a timely and effective manner, so the number of lagging batteries cannot be effectively reduced. Summary of the Invention

[0003] Embodiments of the present invention provide a desulfurization maintenance method, medium and system for storage batteries to solve the problem that the existing technology cannot carry out desulfurization maintenance in a timely and effective manner when the battery is sulfated.

[0004] In a first aspect, a desulfurization maintenance method for a storage battery is provided, including:

[0005] Measuring the voltage, internal resistance and terminal post temperature of the storage battery in real time;

[0006] Calculating a first pulse coefficient based on the measured voltage, internal resistance and terminal post temperature of the storage battery;

[0007] If the first pulse coefficient is greater than a first preset threshold, starting a pulse according to a first pulse parameter for the first desulfurization.

[0008] In a second aspect, a computer-readable storage medium is provided. Computer program instructions are stored on the computer-readable storage medium; when the computer program instructions are executed by a processor, the desulfurization maintenance method for a storage battery as described in the embodiments of the first aspect above is implemented.

[0009] In a third aspect, a desulfurization maintenance system for a storage battery is provided, including: the computer-readable storage medium as described in the embodiments of the second aspect above.

[0010] In this way, in the embodiments of the present invention, pulse desulfurization is started according to the magnitudes of the accurately measured voltage, internal resistance and terminal post temperature of the storage battery, and corresponding pulse intensity, frequency, duty cycle, hump peak-to-bottom amplitude and duration are set, so that desulfurization is more timely and a better desulfurization effect is achieved. Brief Description of the Drawings

[0011] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0012] Figure 1 is the flow of the sulfur removal and maintenance method for the storage battery according to the embodiment of the present invention Figure 1 ;

[0013] Figure 2 is the flow of the sulfur removal and maintenance method for the storage battery according to the embodiment of the present invention Figure 2 ;

[0014] Figure 3 is the schematic diagram of the hump pulse according to the embodiment of the present invention Figure 1 ;

[0015] Figure 4 is the schematic diagram of the hump pulse according to the embodiment of the present invention Figure 2 . Specific Embodiments

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0017] The embodiments of the present invention disclose a sulfur removal and maintenance method for a storage battery. As Figure 1 shown, the method includes the following steps:

[0018] Step S101: Measure the voltage, internal resistance, and terminal temperature of the storage battery in real time.

[0019] Step S102: Calculate the first pulse coefficient based on the measured voltage, internal resistance, and terminal temperature of the storage battery.

[0020] In practical applications, the influence of temperature on the storage battery will cause differences in the activity of the chemical substances inside the storage battery, resulting in a large change in capacity. The charge and discharge process of the storage battery is a process of internal chemical reaction. Once lead sulfate is formed due to improper use and poor maintenance, without the interference of external factors, the lead sulfate will not decompose, and the number of moving charges participating in the chemical reaction in the electrolyte of the storage battery will decrease. The existing technology uses desulfurization methods such as sharp pulses. The starting desulfurization method is single, only based on voltage or internal resistance, and the desulfurization pulse is fixed, resulting in a poor desulfurization effect, only reaching about 60%, or the current is too large, damaging the storage battery. In contrast, the present invention establishes a model based on voltage, internal resistance, and temperature, and obtains the first pulse coefficient as the desulfurization start condition, which can timely detect and start to solve the sulfation problem.

[0021] Specifically, the calculation equation of the first pulse coefficient is:

[0022]

[0023] Among them, K1 represents the first pulse coefficient, K U represents the coefficient ratio of the voltage of the storage battery, K T represents the coefficient ratio of the pole temperature, K R represents the coefficient ratio of the internal resistance, U t represents the measured voltage of the storage battery, U e represents the rated voltage of the storage battery, T t represents the measured pole temperature, T e represents the rated pole temperature, R t represents the measured internal resistance, R e represents the rated internal resistance. K U 、K T and K R are empirical values and can be preset according to experience.

[0024] Step S103: If the first pulse coefficient is greater than the first preset threshold, start the pulse according to the first pulse parameter for the first desulfurization.

[0025] The pulse used for desulfurization is a current-type composite harmonic resonance high-frequency hump pulse. Therefore, the first pulse parameters include: the first pulse current intensity, the first pulse frequency, the first pulse duty cycle, the percentage of the bottom amplitude of the first pulse hump to the peak top, and the first pulse duration.

[0026] The above specific first pulse parameters are calculated respectively through the following methods:

[0027] The first pulse current intensity is the product of the rated pulse current intensity and the first pulse coefficient, that is, I1 = I e ×K1, where I1 represents the first pulse current intensity, I eIndicates the rated pulse current intensity.

[0028] The first pulse frequency is the product of the rated pulse frequency and the first pulse coefficient, i.e., f1 = f e ×K1, where f1 represents the first pulse frequency and f e represents the rated pulse frequency.

[0029] The first pulse duty cycle is the product of the rated pulse duty cycle and the first pulse coefficient, i.e., A1 = A e ×K1, where A1 represents the first pulse duty cycle and A e represents the rated pulse duty cycle.

[0030] The percentage of the bottom peak amplitude of the first pulse hump to the peak is the quotient of the percentage of the bottom peak amplitude of the rated pulse hump to the peak and the first pulse coefficient, i.e., B1 = B e / K1, where B1 represents the percentage of the bottom peak amplitude of the first pulse hump to the peak and B e represents the percentage of the bottom peak amplitude of the rated pulse hump to the peak.

[0031] The first pulse duration is the quotient of the rated pulse duration and the first pulse coefficient, i.e., D1 = D e / K1, where D1 represents the first pulse duration and D e represents the rated pulse duration.

[0032] Through the above steps, the first desulfurization can be carried out under satisfied conditions.

[0033] In some cases, it is not enough to carry out desulfurization only once, and desulfurization needs to be carried out again according to the situation.

[0034] Preferably, as Figure 2 shown, after step S103, the method further includes the following process:

[0035] Step S201: Obtain the first discharge current within the preset discharge time before the first desulfurization, and calculate the integral of the first discharge current within the preset discharge time to obtain the first discharge charge.

[0036] Taking the first discharge current as a constant value for illustration, the first discharge charge Q0 = i0Δt. Where i0 represents the first discharge current and Δt represents the preset discharge time.

[0037] Step S202: Obtain the second discharge current within the preset discharge time after the nth desulfurization, and calculate the integral of the second discharge current within the preset discharge time to obtain the second discharge charge.

[0038] Taking the second discharge current as a constant value for illustration, the second discharge charge Q n = in Δt. Wherein, i n represents the second discharge current, n>0, and n is a positive integer. It should be understood that the second discharge current may be different with different desulfurization times. Therefore, the second discharge charge may be different with different desulfurization times.

[0039] Step S203: Calculate the ratio of the second discharge charge after the nth desulfurization to the first discharge charge to obtain the ratio of the number of electrons moving after the nth desulfurization.

[0040] The ratio of the number of electrons moving after the nth desulfurization is the ratio of the number of electrons moving within the preset discharge time after the nth desulfurization to the number of electrons moving within the preset discharge time before the first desulfurization. Since the number of electrons moving is equal to the discharge charge divided by the unit charge. Therefore, through conversion, it can be known that the ratio of the number of electrons moving after the nth desulfurization is equal to the ratio of the second discharge charge after the nth desulfurization to the first discharge charge, that is where, e represents the unit charge, N n represents the ratio of the number of electrons moving after the nth desulfurization.

[0041] Step S204: If the ratio of the number of electrons moving after the nth desulfurization is less than the second preset threshold, then calculate the second pulse coefficient after the nth desulfurization according to the first pulse coefficient, the coefficient ratio of the number of electrons moving, and the ratio of the number of electrons moving after the nth desulfurization.

[0042] Specifically, the calculation equation of the second pulse coefficient after the nth desulfurization is:

[0043] K 2,n =K1×K N ×[(N n -1)×10000 + 1].

[0044] where, K 2,n represents the second pulse coefficient after the nth desulfurization, K N represents the coefficient ratio of the number of electrons moving. K N is an empirical value and can be set according to experience.

[0045] Step S205: If the second pulse coefficient after the nth desulfurization is greater than the first preset threshold, then start the pulse according to the second pulse parameters after the nth desulfurization for the (n + 1)th desulfurization.

[0046] The types of the second pulse parameters and the first pulse parameters are the same. Specifically, the second pulse parameters include: the second pulse current intensity, the second pulse frequency, the second pulse duty cycle, the percentage of the second pulse hump peak-to-bottom amplitude to the peak, and the second pulse duration.

[0047] The above specific second pulse parameters are calculated through the following methods respectively:

[0048] The second pulse current intensity after the nth desulfurization is the product of the rated pulse current intensity and the second pulse coefficient after the nth desulfurization, that is, I 2,n =I e ×K 2,n where I 2,n represents the second pulse current intensity.

[0049] The second pulse frequency after the nth desulfurization is the product of the rated pulse frequency and the second pulse coefficient after the nth desulfurization, that is, f 2,n =f e ×K 2,n where f 2,n represents the second pulse frequency.

[0050] The second pulse duty cycle after the nth desulfurization is the product of the rated pulse duty cycle and the second pulse coefficient after the nth desulfurization, that is, A 2,n =A e ×K 2,n where A 2,n represents the second pulse duty cycle.

[0051] The percentage of the amplitude from the bottom to the peak of the second pulse hump after the nth desulfurization to the peak is the quotient of the percentage of the amplitude from the bottom to the peak of the rated pulse hump to the peak and the second pulse coefficient after the nth desulfurization, that is, B 2,n =B e / K 2,n where B 2,n represents the percentage of the amplitude from the bottom to the peak of the second pulse hump to the peak.

[0052] The second pulse duration after the nth desulfurization is the quotient of the rated pulse duration and the second pulse coefficient after the nth desulfurization, that is, D 2,n =D e / K 2,n where D 2,n represents the second pulse duration.

[0053] Through the above steps, the pulse coefficient is adjusted according to the number of moving electrons generated by the discharge before and after desulfurization, so as to change the pulse parameters. After multiple desulfurizations, the desulfurization effect is better.

[0054] In the embodiment of the present invention, the hump pulse is used for desulfurization, so that the hard, poorly conductive and differently sized coarse-grained lead sulfates gradually generated on the negative plate reach their respective body resonance frequencies and decompose, improving the desulfurization efficiency to more than 90%, increasing the battery capacity, slowing down the deterioration speed of the battery, reducing the damage to the battery, and prolonging the service life of the battery.

[0055] In addition, when certain conditions are met, desulfurization can be stopped. Specifically, the method further includes the following two situations:

[0056] (1) If the ratio of the number of electrons in motion after the nth desulfurization is not less than the second preset threshold, desulfurization ends.

[0057] (2) If all the second pulse parameters after the (n + 1)th desulfurization exceed their respective threshold ranges, desulfurization ends.

[0058] Specifically, the respective threshold ranges of the pulse parameters are as follows:

[0059] Pulse current intensity: 0.01 - 0.05 C, pulse frequency: 5 - 25 KHz, pulse duty cycle: 5 - 25%, percentage of the amplitude at the bottom of the hump to the amplitude at the peak: 14% - 70%, pulse duration: 1 - 5 min.

[0060] When all the second pulse parameters after the (n + 1)th desulfurization exceed the above ranges, desulfurization stops.

[0061] An embodiment of the present invention also discloses a computer-readable storage medium, on which computer program instructions are stored; when the computer program instructions are executed by a processor, the battery desulfurization and maintenance method as described in the above embodiment is implemented.

[0062] An embodiment of the present invention also discloses a battery desulfurization and maintenance system, including: the computer-readable storage medium as described in the above embodiment.

[0063] The following further illustrates the technical solution of the present invention with a specific embodiment.

[0064] Taking a 2V, 500AH battery as an example, the rated voltage U e is 2V, the rated internal resistance R e is 0.4 mΩ, the rated terminal temperature T e is 25 °C, the coefficient specific gravity K of the battery voltage U is 1.03, the coefficient specific gravity K of the terminal temperature T is 0.98, the coefficient specific gravity K of the internal resistance R is 1.05, the measured voltage is 1.95V, the measured internal resistance is 0.6 mΩ, and the measured terminal temperature is 23 °C.

[0065] Therefore, the calculated first pulse coefficient is:

[0066]

[0067] The first preset threshold is 1.1. Therefore, the first pulse coefficient is greater than the first preset threshold, and the pulse is started for the 1st desulfurization. The rated pulse current intensity I e= 0.01C = 500 * 0.01 = 5A. Rated pulse frequency f e is 5KHz. Rated pulse duty cycle A e is 5%. Percentage B of the bottom peak-to-peak amplitude of the rated pulse to the peak e is 70%. Rated pulse duration D e is 300s. The first pulse parameters are as follows:

[0068] First pulse current intensity: I1 = I e × K1 = 5 × 1.5 = 7.5A.

[0069] First pulse frequency: f1 = f e × K1 = 5 × 1.5 = 7.5KHz.

[0070] First pulse duty cycle: A1 = A e × K1 = 5% × 1.5 = 7.5%.

[0071] Percentage of the bottom peak-to-peak amplitude of the first pulse to the peak: B1 = B e / K1 = 70 / 1.5 = 46.7%.

[0072] First pulse duration: D1 = D e / K1 = 300 / 1.5 = 200s.

[0073] Desulfurization is carried out for the first time according to the above first pulse parameters. As Figure 3 and 4 shown, the hump pulse is a symmetric hump on both sides, the pulse frequency is 7.5KHz, that is, the interval between two hump pulses is 133.33us, the width of one hump pulse is 10us, and the percentage of the bottom peak-to-peak amplitude of the pulse hump to the peak is 46.7, that is, the peak is 7.5A and the bottom is 3.5A. The pulse current rises from 0 to 3.5A in 1us, rises from 3.5A to the peak 7.5A in 2us, and drops from the peak 7.5A to the bottom 3.5A in 2us.

[0074] Before the first desulfurization, the preset discharge time is 1s, and the first discharge current i0 is measured to be 0.9997, and the first discharge charge Q0 = i0Δt = 0.9997 × 1 = 0.9997C.

[0075] After the first desulfurization, the preset discharge time is 1s, and the second discharge current i1 after the first desulfurization is measured to be 0.99975, and the second discharge charge Q2 = i2Δt = 0.99975 × 1 = 0.99975C.

[0076] Ratio of the number of electrons moving after the first desulfurization

[0077] The second preset threshold is 1.0001. If N1 is less than 1.0001, then calculate the second pulse coefficient after the first desulfurization. Among them, the coefficient ratio K of the number of moving electrons N is 1.1.

[0078] K 2,1 = K1 × K N ×[(N1 - 1)×10000 + 1] = 1.5×1.1×[(1.00005 - 1)×10000 + 1] = 2.5.

[0079] The second pulse coefficient K 2,1 is greater than the first preset threshold. Start the pulse according to the second pulse parameters after the first desulfurization for the second desulfurization. The second pulse parameters after the first desulfurization are as follows:

[0080] The second pulse current intensity after the first desulfurization: I 2,1 = I e × K 2,1 = 5×2.5 = 12.5A.

[0081] The second pulse frequency after the first desulfurization: f 2,1 = f e × K 2,1 = 5×2.5 = 12.5KHz.

[0082] The second pulse duty cycle after the first desulfurization: A 2,1 = A e × K 2,1 = 5%×2.5 = 12.5%.

[0083] The percentage of the second pulse hump peak-to-bottom amplitude to the peak after the first desulfurization: B 2,1 = B e / K 2,1 = 70 / 2.5 = 28%.

[0084] The second pulse duration after the first desulfurization: D 2,1 = D e / K 2,1 = 300 / 2.5 = 120s.

[0085] Perform the second desulfurization according to the above second pulse parameters.

[0086] After the second desulfurization, the preset discharge time is 1s. Measure the second discharge current i2 after the second desulfurization to be 0.999775, and the second discharge charge Q2 = i2Δt = 0.999775×1 = 0.999775C.

[0087] The ratio of the number of moving electrons after the second desulfurization

[0088] The second preset threshold is 1.0001. If N2 is less than 1.0001, then calculate the second pulse coefficient after the second desulfurization. Among them, the coefficient ratio K of the number of moving electrons N is 1.1.

[0089] K 2,2 = K1 × K N ×[(N2 - 1)×10000 + 1] = 1.5×1.1×[(1.000075 - 1)×10000 + 1] = 3.

[0090] The second pulse coefficient K 2,2 is greater than the first preset threshold. Start the pulse according to the second pulse parameters after the second desulfurization for the third desulfurization. The second pulse parameters after the second desulfurization are as follows:

[0091] The second pulse current intensity after the second desulfurization: I 2,2 = I e × K 2,2 = 5×3 = 15A.

[0092] The second pulse frequency after the second desulfurization: f 2,2 = f e × K 2,2 = 5×3 = 15KHz.

[0093] The second pulse duty cycle after the second desulfurization: A 2,2 = A e × K 2,2 = 5%×3 = 15%.

[0094] The percentage of the bottom amplitude of the second pulse hump to the peak top after the second desulfurization: B 2,2 = B e / K 2,2 = 70 / 3 = 23%.

[0095] The second pulse duration after the second desulfurization: D 2,2 = D e / K 2,2 = 300 / 3 = 100s.

[0096] Perform the third desulfurization according to the above second pulse parameters.

[0097] After the third desulfurization, the preset discharge time is 1s. Measure the second discharge current i3 after the third desulfurization to be 0.99981, and the second discharge charge Q3 = i3Δt = 0.99981×1 = 0.99981C.

[0098] The ratio of the number of moving electrons after the third desulfurization

[0099] If the second preset threshold is 1.0001 and N3 is not less than 1.0001, desulfurization ends.

[0100] After the above-mentioned third desulfurization, the desulfurization efficiency is 100%, and through the foregoing calculations, the following results are obtained:

[0101]

[0102]

[0103]

[0104] Then the following desulfurization rate results are calculated:

[0105] Desulfurization rate after the first desulfurization:

[0106] Desulfurization rate after the second desulfurization:

[0107] It can be seen that as the number of desulfurization times increases, the desulfurization rate increases and the desulfurization effect is better.

[0108] In summary, in the embodiments of the present invention, pulse desulfurization is started according to the accurately measured voltage, internal resistance, and pole column temperature of the storage battery, and the pulse coefficient is adjusted according to the number of moving electrons generated by the discharge before and after desulfurization to change the pulse parameters. Desulfurization is performed multiple times, and the corresponding pulse intensity, frequency, duty cycle, hump peak-to-bottom amplitude, and duration are set for each desulfurization, making the desulfurization more timely and achieving a better desulfurization effect.

[0109] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A method for desulfurization and maintenance of a storage battery, characterized in that, Comprising: Real-time measuring the voltage, internal resistance and terminal temperature of the storage battery; Calculating a first pulse coefficient based on the measured voltage, internal resistance and terminal temperature of the storage battery; If the first pulse coefficient is greater than a first preset threshold, starting a pulse according to first pulse parameters to perform the first desulfurization; The calculation equation of the first pulse coefficient is: ； Among them, K 1 represents the first pulse coefficient, K U represents the coefficient ratio of the voltage of the storage battery, K T represents the coefficient ratio of the pole column temperature, K R represents the coefficient ratio of the internal resistance, U t represents the voltage of the storage battery measured, U e represents the rated voltage of the storage battery, T t represents the pole column temperature measured, T e represents the rated pole column temperature, R t represents the internal resistance measured, R e represents the rated internal resistance; The first pulse parameters include: first pulse current intensity, first pulse frequency, first pulse duty cycle, percentage of the bottom amplitude of the first pulse hump to the peak amplitude, and first pulse duration; The first pulse current intensity is the product of the rated pulse current intensity and the first pulse coefficient; The first pulse frequency is the product of the rated pulse frequency and the first pulse coefficient; The first pulse duty cycle is the product of the rated pulse duty cycle and the first pulse coefficient; The percentage of the bottom amplitude of the first pulse hump to the peak amplitude is the quotient of the percentage of the bottom amplitude of the rated pulse hump to the peak amplitude and the first pulse coefficient; The first pulse duration is the quotient of the rated pulse duration and the first pulse coefficient; The pulse for desulfurization is a current-type composite harmonic resonance high-frequency hump pulse.

2. The method for desulfurization and maintenance of a storage battery according to claim 1, characterized in that, After the step of starting a pulse according to first pulse parameters to perform the first desulfurization, the method further includes: Obtaining a first discharge current within a preset discharge time before the first desulfurization, and calculating an integral of the first discharge current within the preset discharge time to obtain a first discharge charge amount; Obtain the second discharge current within a preset discharge time after the n th desulfurization, and calculate the integral of the second discharge current within the preset discharge time to obtain a second discharge charge amount, where n > 0, n is a positive integer; Calculate the ratio of the second discharge charge amount after the n th desulfurization to the first discharge charge amount to obtain the ratio of the number of electrons moving after the n th desulfurization; If the ratio of the number of electrons in motion after the n -th desulfurization is less than the second preset threshold, then calculate the second pulse coefficient after the n -th desulfurization according to the first pulse coefficient, the coefficient ratio of the number of electrons in motion, and the ratio of the number of electrons in motion after the n -th desulfurization; If the second pulse coefficient after the n -th desulfurization is greater than the first preset threshold, then start the pulse according to the second pulse parameter after the n -th desulfurization to perform the n +1 -th desulfurization.

3. The battery desulfurization and maintenance method according to claim 2, characterized in that, The n calculation equation of the second pulse coefficient after the th desulfurization is: ； Among them, K 2,n represents the second pulse coefficient after the n th desulfurization, K 1 represents the first pulse coefficient, K N represents the coefficient ratio of the number of moving electrons, N n represents the ratio of the number of moving electrons after the n th desulfurization.

4. The method for desulfurization and maintenance of the storage battery according to claim 2, characterized in that The second pulse parameters include: second pulse current intensity, second pulse frequency, second pulse duty cycle, percentage of the bottom amplitude of the second pulse hump to the peak amplitude, and second pulse duration; The n second pulse current intensity after the n th desulfurization is the product of the rated pulse current intensity and the second pulse coefficient after the n th desulfurization; The n second pulse frequency after the n th desulfurization is the product of the rated pulse frequency and the second pulse coefficient after the The second pulse duty cycle after the n th desulfurization is the product of the rated pulse duty cycle and the second pulse coefficient after the n th desulfurization; The percentage of the bottom amplitude of the second pulse hump after the n -th desulfurization to the peak amplitude is the quotient of the percentage of the bottom amplitude of the rated pulse hump to the peak amplitude and the second pulse coefficient after the n -th desulfurization; The n second pulse duration after the n th desulfurization is the quotient of the rated pulse duration and the second pulse coefficient after the n th desulfurization.

5. The battery desulfurization and maintenance method according to claim 2, characterized in that Further comprising: If the ratio of the number of electrons moving after the n -th desulfurization is not less than the second preset threshold, the desulfurization ends.

6. The method for desulfurization and maintenance of a storage battery according to claim 2, characterized in that, Further comprising: If the second pulse parameters after the n +1st desulfurization all exceed their respective threshold ranges, the desulfurization ends.

7. A computer-readable storage medium, characterized in that: Computer program instructions are stored on the computer-readable storage medium; when the computer program instructions are executed by a processor, the storage battery desulfurization and maintenance method as described in any one of claims 1 to 6 is implemented.

8. A desulfurization and maintenance system for a storage battery, characterized in that Comprising: The computer-readable storage medium as described in claim 7.

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