Battery line composite desulfurization method and device, electronic equipment and storage medium

Abstract

This disclosure provides a method, apparatus, electronic device, and storage medium for combined desulfation of storage batteries. The method includes: detecting whether a battery monitoring system meets preset combined desulfation conditions; when the battery monitoring system meets the combined desulfation conditions, identifying a target battery from the battery pack that meets the desulfation timing; detecting whether the target battery meets preset individual cell desulfation conditions; sending a connection command from a monitoring host to the target acquisition unit corresponding to the target battery, causing the target acquisition unit to control the target battery to connect with the monitoring host; setting the circuit between the target battery and the monitoring host to charging mode, transmitting the DC bus power to the target battery after voltage reduction by the monitoring host; and, after determining that the target battery has completed charging, outputting pulses to the target battery through the monitoring host to perform desulfation. This method can achieve efficient desulfation of batteries, helping to extend battery life and save user operating costs.

Description

Technical Field

[0001] This disclosure relates to the technical field of battery management, specifically to a method, apparatus, electronic device, and storage medium for composite desulfurization of battery lines. Background Technology

[0002] Due to their high cost-effectiveness, lead-acid batteries are widely used in power systems, emergency lighting systems, power plants, telecommunications equipment, marine equipment, medical equipment, large UPS backup power supplies, peak load compensation energy storage devices, fire protection and security systems, and other fields.

[0003] Lead-acid batteries will remain the dominant power source in the next century. However, a significant issue is that most batteries cannot meet the demands of today's advanced technology. While the reactive materials in lead-acid batteries are theoretically designed to last 8-10 years or longer, this is actually not the case. The average battery lifespan is currently 6-48 months, with only 30% lasting 48 months. The majority of batteries age and fail prematurely. A major cause of these battery life problems is sulfate buildup, and the most effective solution is desulfurization technology.

[0004] For 100 years, lead-acid battery technology has remained essentially unchanged. While improvements have been made in chemistry and structure, a common factor contributing to battery failure remains: sulfate buildup on the plates. The most effective solution is desulfation technology. Desulfation helps eliminate these problems by maintaining high levels of reactive materials, ensuring internal battery balance, and facilitating external charging. This reduces resource waste, lowers DC power system failure rates, and saves on the associated costs of battery replacement. However, lead-acid batteries contain approximately 16% sulfuric acid (electrolyte) and over 70% lead, making them extremely harmful to the environment. The acid contaminates soil and groundwater, and can cause lead poisoning in humans and animals. Because heavy metal pollution is inherently non-degradable in nature, once water or soil is polluted, the pollution can persist for decades to centuries.

[0005] In actual substation operation and maintenance, desulfation devices are mostly used to manually desulfurize batteries with excessive internal resistance or low capacity. Due to low automation levels, high skill requirements for technicians, and the rapid increase in the number of substations caused by smart grid construction, power grid and provincial power maintenance companies are spending significant manpower and resources on battery maintenance, often resulting in inadequate and untimely maintenance. The inability to reliably provide backup power during system failures due to faulty batteries frequently leads to escalating accidents, severely impacting power grid production and safety. Therefore, a highly efficient desulfation solution for batteries is urgently needed. Summary of the Invention

[0006] This disclosure provides a method, apparatus, electronic device, and storage medium for composite desulfurization of battery lines.

[0007] According to a first aspect of this disclosure, a method for compound desulfation of battery lines is provided. This method is applied to a battery monitoring system, which includes a monitoring host, a battery bank, and multiple acquisition units. The positive and negative terminals of each battery in the battery bank are connected to a first terminal of the monitoring host via a corresponding acquisition unit. The second terminal of the monitoring host is connected to the DC bus where the battery bank is located. The acquisition units are also communicatively connected to the monitoring host. The acquisition units are used to control the connection / disconnection between the corresponding battery and the monitoring host according to instructions sent by the monitoring host. The method includes:

[0008] Check whether the battery monitoring system meets the preset composite desulfurization conditions;

[0009] When the battery monitoring system meets the composite desulfation conditions, the target battery that meets the desulfation timing is determined from the battery pack.

[0010] The test determines whether the target battery meets the preset desulfurization conditions for individual cells.

[0011] When it is determined that the target battery meets the desulfurization conditions of a single cell, the monitoring host sends a connection command to the target acquisition unit corresponding to the target battery, so that the target acquisition unit controls the target battery to connect with the monitoring host.

[0012] Set the circuit between the target battery and the monitoring host to charging mode, and transmit the power of the DC bus to the target battery after the monitoring host steps down the voltage.

[0013] After the target battery has been fully charged, the monitoring host outputs pulses to the target battery to perform desulfation.

[0014] After desulfurization is completed, the circuit between the target battery and the monitoring host is switched to discharge mode, and the electrical energy of the target battery is released to the DC bus after being boosted by the monitoring host.

[0015] In some embodiments of this disclosure, the combined desulfurization conditions include at least one of the following:

[0016] The AC power is operating normally;

[0017] The voltage of the DC bus is within the preset voltage range;

[0018] The ambient temperature of the battery pack is within the preset temperature range;

[0019] The temperature of the terminals in the battery monitoring system is within the preset temperature range.

[0020] In some embodiments of this disclosure, identifying target batteries from a battery pack that meet the desulfurization timing includes:

[0021] Candidate batteries with desulfurization characteristics were identified in the battery pack;

[0022] The candidate battery whose number falls within the preset numbering range and has the highest number is selected as the target battery that meets the desulfation timing.

[0023] In some embodiments of this disclosure, the desulfurization mark is configured for the battery in any of the following cases:

[0024] The battery reaches the preset desulfurization time.

[0025] The battery's health value is below the preset threshold.

[0026] The battery's internal resistance is higher than the preset resistance value;

[0027] A request for desulfurization of the battery has been received.

[0028] In some embodiments of this disclosure, detecting whether the target battery meets preset desulfurization conditions for individual cells includes:

[0029] The system detects the battery parameter values ​​of the target battery and obtains the comparison results between the battery parameter values ​​and preset parameter thresholds.

[0030] In response to the comparison results indicating that the values ​​of each battery parameter of the target battery are normal, the monitoring host outputs pulses to the target battery to test and obtain the pulse test results.

[0031] If the pulse test result is normal, a pull-in test is performed on the channel relay in the target acquisition unit corresponding to the target battery to obtain the pull-in test result.

[0032] If the absorption test results are normal, it is determined that the target battery meets the preset desulfurization conditions for individual cells.

[0033] In some embodiments of this disclosure, battery parameter values ​​include the voltage value and temperature value of the target battery, and parameter thresholds include voltage thresholds and temperature thresholds.

[0034] In some embodiments of this disclosure, before outputting pulses to the target battery via a monitoring host for desulfurization, the method further includes:

[0035] Determine the characteristic parameters of the target battery, including battery capacity and float charge voltage;

[0036] The pulse control parameters of the monitoring host are determined based on the characteristic parameters, which include pulse frequency, pulse width, pulse intensity, pulse amplitude, and pulse output duration.

[0037] According to a second aspect of this disclosure, a battery line composite desulfurization device is provided. This device is applied to a battery monitoring system, which includes a monitoring host, a battery pack, and multiple acquisition units. The positive and negative terminals of each battery in the battery pack are connected to the first terminal of the monitoring host through the corresponding acquisition unit. The second terminal of the monitoring host is connected to the DC bus where the battery pack is located. The acquisition units are also communicatively connected to the monitoring host. The acquisition units are used to control the connection and disconnection between the corresponding battery and the monitoring host according to the instructions sent by the monitoring host.

[0038] The battery line composite desulfurization device includes a composite condition detection module, a target battery determination module, a single cell condition determination module, a circuit conduction module, a charging module, a pulse desulfurization module, and a discharge module.

[0039] The composite condition detection module is used to detect whether the battery monitoring system meets the preset composite desulfurization conditions;

[0040] The target battery determination module is used to identify the target battery that meets the desulfation timing from the battery pack when the battery monitoring system meets the composite desulfation conditions.

[0041] The single-cell condition determination module is used to detect whether the target battery meets the preset single-cell desulfurization conditions.

[0042] The circuit connection module is used to send a connection command to the target acquisition unit corresponding to the target battery through the monitoring host when it is determined that the target battery meets the desulfurization conditions of the single cell, so that the target acquisition unit controls the target battery to connect with the monitoring host.

[0043] The charging module is used to set the circuit between the target battery and the monitoring host to charging mode, and to transmit the power of the DC bus to the target battery after the monitoring host steps down the voltage.

[0044] The pulse desulfurization module is used to output pulses to the target battery through the monitoring host to perform desulfurization after the target battery has been fully charged.

[0045] The discharge module is used to switch the circuit between the target battery and the monitoring host to discharge mode after the desulfurization is completed, so that the electrical energy of the target battery is released to the DC bus after being boosted by the monitoring host.

[0046] In some embodiments of this disclosure, the combined desulfurization conditions include at least one of the following:

[0047] The AC power is operating normally;

[0048] The voltage of the DC bus is within the preset voltage range;

[0049] The ambient temperature of the battery pack is within the preset temperature range;

[0050] The temperature of the terminals in the battery monitoring system is within the preset temperature range.

[0051] In some embodiments of this disclosure, the target battery determination module, when determining a target battery from the battery pack that meets the desulfurization timing, is specifically used for:

[0052] Candidate batteries with desulfurization characteristics were identified in the battery pack;

[0053] The candidate battery whose number falls within the preset numbering range and has the highest number is selected as the target battery that meets the desulfation timing.

[0054] In some embodiments of this disclosure, the desulfurization mark is configured for the battery in any of the following cases:

[0055] The battery reaches the preset desulfurization time.

[0056] The battery's health value is below the preset threshold.

[0057] The battery's internal resistance is higher than the preset resistance value;

[0058] A request for desulfurization of the battery has been received.

[0059] In some embodiments of this disclosure, the single-cell condition determination module, when used to detect whether a target battery meets preset single-cell desulfurization conditions, is specifically used for:

[0060] The system detects the battery parameter values ​​of the target battery and obtains the comparison results between the battery parameter values ​​and preset parameter thresholds.

[0061] In response to the comparison results indicating that the values ​​of each battery parameter of the target battery are normal, the monitoring host outputs pulses to the target battery to test and obtain the pulse test results.

[0062] If the pulse test result is normal, a pull-in test is performed on the channel relay in the target acquisition unit corresponding to the target battery to obtain the pull-in test result.

[0063] If the absorption test results are normal, it is determined that the target battery meets the preset desulfurization conditions for individual cells.

[0064] In some embodiments of this disclosure, battery parameter values ​​include the voltage value and temperature value of the target battery, and parameter thresholds include voltage thresholds and temperature thresholds.

[0065] In some embodiments of this disclosure, when the pulse desulfurization module is used to output pulses to the target battery via a monitoring host for desulfurization, it is specifically used for:

[0066] Determine the characteristic parameters of the target battery, including battery capacity and float charge voltage;

[0067] The pulse control parameters of the monitoring host are determined based on the characteristic parameters, which include pulse frequency, pulse width, pulse intensity, pulse amplitude, and pulse output duration.

[0068] According to a third aspect of this disclosure, an electronic device is provided, comprising:

[0069] At least one processor; and a memory communicatively connected to the at least one processor;

[0070] The memory stores instructions that can be executed by at least one processor, which enables the at least one processor to perform the battery line desulfurization method provided in the first aspect above.

[0071] According to a fourth aspect of this disclosure, a non-transitory computer-readable storage medium storing computer instructions is provided, wherein the computer instructions are used to cause a computer to perform the battery line desulfurization method provided in the first aspect above.

[0072] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description.

[0073] The beneficial effects of the technical solution provided in this disclosure are:

[0074] The battery desulfation method disclosed herein achieves highly efficient desulfation of batteries, helping to extend battery life, improve power system reliability, and save user operating costs. Specifically, by collecting parameters such as internal resistance and health status, the desulfation needs of battery clusters can be accurately identified. A combined desulfation method of shallow-cycle high-current charging and pulse charging is used to desulfate the batteries, enhancing the desulfation effect and improving desulfation efficiency. This contributes to extending battery life, improving power system reliability, and saving user operating costs. The desulfation process requires no manual intervention or external discharge equipment; it utilizes the DC system bus's own load for discharge, without generating high temperatures, thus achieving the technical effects of reduced manpower and energy consumption and enhanced safety and reliability. Attached Figure Description

[0075] The accompanying drawings are provided to better understand this solution and do not constitute a limitation of this disclosure. Wherein:

[0076] Figure 1 A schematic diagram of the battery monitoring system provided in this disclosure is shown.

[0077] Figure 2 A schematic diagram of the battery monitoring system provided in this disclosure in charging mode is shown;

[0078] Figure 3 A schematic diagram of the battery monitoring system provided in this disclosure in discharge mode is shown;

[0079] Figure 4 A schematic flowchart of a composite desulfurization method for battery lines provided in this disclosure is shown.

[0080] Figure 5 A schematic flowchart of another battery line desulfurization method provided in this disclosure is shown.

[0081] Figure 6 It shows Figure 5 A detailed flowchart of the E13 process;

[0082] Figure 7 A schematic diagram of the process for configuring desulfurization markings for battery packs provided in this disclosure is shown;

[0083] Figure 8 A schematic diagram of a battery line composite desulfurization device provided in this disclosure is shown;

[0084] Figure 9 A schematic block diagram of an example electronic device that can be used to implement embodiments of the present disclosure is shown. Detailed Implementation

[0085] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0086] The battery desulfurization method, apparatus, electronic equipment, and storage medium disclosed herein are intended to solve at least one of the above-mentioned technical problems in the prior art.

[0087] This disclosure provides an example of a battery line desulfurization method that can be applied to battery monitoring systems. Figure 1 A schematic diagram of the battery monitoring system provided in this disclosure is shown, such as... Figure 1 As shown, the battery monitoring system includes a monitoring host, a battery pack, and multiple acquisition units. The positive and negative terminals of each battery in the battery pack are connected to the first terminal of the monitoring host through the corresponding acquisition unit. The second terminal of the monitoring host is connected to the DC bus where the battery pack is located. The acquisition units are also communicatively connected to the monitoring host. The acquisition units are used to control the connection between the corresponding battery and the monitoring host according to the instructions sent by the monitoring host. Specifically, the acquisition unit has a channel relay. When the channel relay is energized, the battery is connected to the monitoring host; when the channel relay is de-energized, the battery is disconnected from the monitoring host.

[0088] When the battery is connected to the monitoring host, the battery monitoring system has two working states: charging mode and discharging mode. Figure 2 A schematic diagram of the battery monitoring system provided in this disclosure in charging mode is shown, as follows: Figure 2 As shown, in charging mode, the electrical energy of the DC bus is stepped down by the monitoring host and then transmitted to the battery through the acquisition unit. Figure 3 A schematic diagram of the battery monitoring system provided in this disclosure in discharge mode is shown, as follows: Figure 3 As shown, in discharge mode, the electrical energy in the battery is transmitted to the monitoring host through the acquisition unit, and then released to the DC bus after being boosted by the monitoring host.

[0089] Figure 4 A schematic flowchart of a battery line desulfurization method provided in this disclosure is shown, as follows: Figure 4 As shown, this method mainly includes the following steps:

[0090] S410: Detects whether the battery monitoring system meets the preset composite desulfurization conditions.

[0091] In some embodiments of this disclosure, the combined desulfurization conditions include at least one of the following: normal operation of AC power, DC bus voltage within a preset voltage range, ambient temperature of the battery pack within a preset temperature range, and terminal temperature in the battery monitoring system within a preset temperature range.

[0092] S420: When the battery monitoring system meets the composite desulfation conditions, identify the target battery from the battery pack that meets the desulfation timing.

[0093] Optionally, candidate batteries with desulfation indicators can be identified first in the battery pack. Then, the candidate battery with the highest number within a preset numbering range is selected as the target battery for the desulfation timing. Here, the indicator is configured for the battery in any of the following situations: reaching a preset desulfation time for the battery, the battery's health value falling below a preset value, the battery's internal resistance exceeding a preset resistance value, or receiving a desulfation request for the battery.

[0094] Understandably, if the battery monitoring system does not meet the conditions for compound desulfurization, subsequent steps will not be executed. Specifically, in the event of an AC power outage, excessively low DC bus voltage, excessively high ambient temperature, or excessively high terminal temperature, subsequent desulfurization operations will not be performed to ensure the safe and reliable operation of the power system.

[0095] S430: Detects whether the target battery meets the preset desulfurization conditions for individual cells.

[0096] Specifically, the system can detect the battery parameter values ​​of the target battery and compare them with preset parameter thresholds. The battery parameter values ​​include the target battery's voltage and temperature, and the parameter thresholds include voltage and temperature thresholds. Then, in response to the comparison results indicating that the target battery's parameter values ​​are normal, the monitoring host outputs pulses to the target battery to obtain pulse test results. Specifically, if the target battery's voltage and temperature are both above the voltage and temperature thresholds, the monitoring host outputs pulses to the target battery to obtain pulse test results. It is understood that if the comparison results indicate that the target battery's parameter values ​​are abnormal, subsequent steps will be stopped. Specifically, if the target battery's voltage or temperature is below the voltage or temperature threshold, subsequent steps will be stopped to ensure the safety of that battery.

[0097] If the pulse test result is normal, the channel relay in the target acquisition unit corresponding to the target battery can be activated to obtain the activation test result. If the pulse test result is abnormal, subsequent steps will be stopped.

[0098] If the engagement test result is normal, the system can determine that the target battery meets the preset desulfation conditions for individual cells. If the engagement test result is abnormal, subsequent steps will be stopped, and engagement error information will be fed back, indicating the type of error that failed to engage. Error types include timeout and lack of engagement auxiliary output signal.

[0099] S440: When it is determined that the target battery meets the desulfurization conditions of a single cell, the monitoring host sends a connection command to the target acquisition unit corresponding to the target battery, so that the target acquisition unit controls the target battery to connect with the monitoring host.

[0100] Specifically, after the target acquisition unit receives a connection command from the monitoring host, the control channel relay is activated, connecting the target battery to the monitoring host.

[0101] S450: Sets the circuit between the target battery and the monitoring host to charging mode, and transmits the power from the DC bus to the target battery after being stepped down by the monitoring host.

[0102] Here, the monitoring host performs high-current constant-current charging on the current battery, repeating this process several times to reduce or eliminate sulfation. The charging voltage and current are adjustable. The charging voltage is set according to the battery specifications and includes temperature compensation for the float charge voltage. The charging current is generally set based on the battery capacity, using a 0.2C10 setting. For example, if the battery capacity is set to 100AH, then a 0.1C10 setting would result in a charging current of 20A.

[0103] S460: After determining that the target battery has finished charging, the monitoring host outputs a pulse to the target battery to perform desulfation.

[0104] Here, the target battery's voltage and charging current can be used to determine if the target battery is fully charged. For example, if the voltage reaches the set voltage and the current is less than the set value, the target battery is fully charged. A fully charged target battery indicates that charging is complete.

[0105] In some embodiments of this disclosure, before outputting pulses to the target battery via a monitoring host for desulfurization, the method further includes:

[0106] Determine the characteristic parameters of the target battery, including battery capacity and float charge voltage;

[0107] The pulse control parameters of the monitoring host are determined based on the characteristic parameters, which include pulse frequency, pulse width, pulse intensity, pulse amplitude, and pulse output duration.

[0108] Generally, the pulse frequency is set to 1kHz, the pulse width can be set from 1% to 50%, the pulse intensity is 0.01C10, the pulse amplitude is the float charge voltage plus 5V, and the duration can be set from 1 to 24 hours. For example, if the battery capacity is set to 100AH ​​and the float charge voltage is 13.6V, then the pulse frequency can be set to 1kHz, the pulse width can be set to 1.15%, the pulse intensity can be set to 0.015C10 = 1.5A, the pulse amplitude can be set to 18.6V, and the duration can be set to 8 hours.

[0109] S470: After desulfurization is completed, the circuit between the target battery and the monitoring host is switched to discharge mode, and the electrical energy of the target battery is released to the DC bus after being boosted by the monitoring host.

[0110] In the S470, constant current discharge control can be performed on the target battery, i.e., constant current discharge of the current battery. The discharge current is generally set to 0.2C10, and the discharge cutoff voltage is the voltage point corresponding to 30% discharge of the battery capacity. For example, if the battery capacity is set to 100AH, then the discharge current at 0.2C10 is 20A; the discharge cutoff voltage, which is the voltage point corresponding to 30% discharge of the battery capacity, is generally 12V. Discharge is complete when the set cutoff voltage is reached.

[0111] The battery desulfation method disclosed herein achieves highly efficient desulfation of batteries, helping to extend battery life, improve power system reliability, and save user operating costs. Specifically, by collecting parameters such as internal resistance and health status, the desulfation needs of battery clusters can be accurately identified. A combined desulfation method of shallow-cycle high-current charging and pulse charging is used to desulfate the batteries, enhancing the desulfation effect and improving desulfation efficiency. This contributes to extending battery life, improving power system reliability, and saving user operating costs. The desulfation process requires no manual intervention or external discharge equipment; it utilizes the DC system bus's own load for discharge, without generating high temperatures, thus achieving the technical effects of reduced manpower and energy consumption and enhanced safety and reliability.

[0112] Figure 5 A schematic flowchart of another battery line desulfurization method provided in this disclosure is shown, as follows: Figure 5 As shown, this method mainly includes the following steps:

[0113] E1: Start, data initialization.

[0114] E2: Determine if the system's composite desulfurization conditions are met (no Class I alarms). If yes, proceed to step E3; otherwise, proceed to step E17. Class I alarms affect the system's composite desulfurization process and include: AC abnormalities, DC bus voltage abnormalities, ambient temperature abnormalities, and terminal temperature abnormalities. In the event of an AC power outage, excessively low DC bus voltage, excessively high ambient temperature, or excessively high terminal temperature, the current composite desulfurization operation will not be performed to ensure the safe and reliable operation of the power system.

[0115] E3: Determine if there is a desulfurization flag, i.e., whether the current system battery has a desulfurization requirement. The requirement comes from the triggering method (1. Timed; 2. Over-limit; 3. Specified; 4. Supplement). If yes, proceed to step E4; otherwise, proceed to step E17.

[0116] E4: Determine if the battery number is out of range, i.e., whether the current individual battery number is correct. If yes, proceed to step E5; otherwise, proceed to step E7. Ensure that the entered battery number is correct and corresponds to the actual battery.

[0117] E5: Determine if all batteries have been desulfurized. If yes, proceed to step E17. If no, proceed to step E6.

[0118] E6: Prepare additional desulfurization data for future desulfurization.

[0119] E7: Determine if the previous stop was due to a single cell fault. If yes, proceed to step E8; otherwise, proceed to step E9. Class II alarms affect both single-cell desulfurization and other related alarms, including: battery undervoltage, and high / low temperature of the battery terminals. When the battery is undervoltage or the battery terminals are at high / low temperatures, the desulfurization operation will not be performed to ensure the safety of the current battery cell.

[0120] E8: Determine whether the corresponding single-section fault has been recovered. If yes, proceed to step E10; otherwise, proceed to step E17.

[0121] E9: Desulfurization pretreatment: Trip all acquisition units and initialize acquisition unit data. Ensure that all acquisition unit switching channels are controlled normally, and that only one acquisition unit is connected to the low-voltage bus at any given time.

[0122] E10: Determine if the fault recovery has timed out. If yes, proceed to step E16; otherwise, proceed to step E11. The fault recovery waiting time is 15 seconds. If the fault is not recovered within 15 seconds, it is considered a timeout.

[0123] E11: Determine if all devices are ready, i.e., the monitoring host and acquisition unit are operating normally. If yes, proceed to step E13; otherwise, proceed to step E12.

[0124] E12: Determine if the preparation time has exceeded the limit. If yes, proceed to step E17; otherwise, proceed to step E11. The maximum preparation time is 30 seconds. If preparation is not completed within 30 seconds, it is considered a timeout.

[0125] E13: Single-cell desulfurization. Perform a single-cell compound desulfurization procedure.

[0126] E14: Error returned. This indicates an error message related to the desulfurization process.

[0127] E15: Determine if desulfurization is complete. This involves determining whether the combined desulfurization process for this section is complete. If yes, proceed to step E16. If not, proceed to step E13.

[0128] E16: Prepare for the next section. This involves preparing the data for the next desulfurization section and determining whether the current section is in a normal state.

[0129] E17: End, system desulfurization process complete.

[0130] Figure 6 It shows Figure 5 A detailed flowchart of the E13 process is shown below. Figure 6 As shown, the process can mainly include the following steps:

[0131] S1: Start, data initialization. After the system is powered on, relevant data such as battery pack voltage, individual cell voltage, positive and negative terminal temperatures, internal resistance, battery health status, charging and discharging current, and terminal temperature are initialized.

[0132] S2: Determine if the desulfurization conditions are met (no alarm). If yes, proceed to step S3; otherwise, proceed to step S19. Alarms include Class I and Class II alarms. Class I alarms include: AC abnormality, DC bus voltage abnormality, ambient temperature abnormality, terminal temperature abnormality, etc. Class II alarms include: individual battery undervoltage, battery terminal high / low temperature, etc. When the battery is undervoltage or the battery terminal is at high / low temperature, the compound desulfurization operation will not be performed to ensure the safety of the current battery.

[0133] S3: Desulfurization pulse adjustment test, which tests the desulfurization pulse output by the monitoring host to ensure that the pulse output control is normal before desulfurization begins.

[0134] S4: The acquisition unit channel is activated, which means that the channel relay of the acquisition unit corresponding to this battery is activated, and the single battery bus is connected to the current battery.

[0135] S5: Determine if the channel is engaged, i.e., whether the channel selection relay of the corresponding acquisition unit of the current battery is engaged. If yes, proceed to step S7; if no, proceed to step S6. The channel relay engagement auxiliary output signal is used to determine whether the current acquisition unit channel relay is engaged.

[0136] S6: Feedback on engagement error information, which provides information on the type of error that failed to engage successfully. Error types include: timeout, no engagement auxiliary output signal, etc.

[0137] S7: Charging: High-current constant-current charging management, which performs high-current constant-current charging on the current battery. Repeated charging can reduce and eliminate battery sulfation. Charging voltage and charging current are adjustable. The charging voltage is set according to the battery specifications and has a floating charge voltage temperature compensation function; the charging current is generally set according to the battery capacity, at a rate of 0.2C10. For example, if the battery capacity is set to 100AH, then the charging current at 0.1C10 is 20A.

[0138] S8: Check if the charging current is normal, i.e., determine if the control current and the actual output feedback current correspond. If yes, proceed to step S9; if no, proceed to step S19. If they correspond, it indicates no abnormality; if they do not correspond, it indicates an abnormality in the charging control.

[0139] S9: Determine if charging is complete. If yes, proceed to step S10. If not, proceed to step S7. The battery is fully charged based on its current voltage and charging current. For example, if the voltage reaches the set voltage and the current is less than the set value, the battery is fully charged.

[0140] S10: Pulse desulfation control, which performs pulse desulfation on the current battery. Generally, the pulse frequency is set to 1kHz, the pulse width is adjustable from 1% to 50%, the pulse intensity is 0.01C10, the pulse amplitude is the float charge voltage plus 5V, and the duration is adjustable from 1 to 24 hours. For example, if the battery capacity is set to 100AH ​​and the float charge voltage is 13.6V, then the pulse frequency can be set to 1kHz, the pulse width can be set to 1.15%, the pulse intensity can be set to 0.015C10 = 1.5A, the pulse amplitude can be set to 18.6V, and the duration can be set to 8 hours.

[0141] S11: Check if the pulse is normal, i.e., determine if the control pulse and the pulse output feedback signal correspond. If yes, proceed to step S12; if no, proceed to step S19. If they correspond, it means there is no abnormality; if they do not correspond, it means there is an abnormality in the pulse output.

[0142] S12: Determine if desulfurization is complete. If yes, proceed to step S13. If no, proceed to step S10. The duration determines whether desulfurization of the battery is complete. Generally, the duration of a single pulse desulfurization is set to 3 hours.

[0143] S13: Discharge: Constant current discharge control, which performs constant current charging on the current battery. The discharge cutoff voltage and discharge current are settable. The discharge current is typically set to 0.2C10, and the discharge cutoff voltage is the voltage point corresponding to 30% battery capacity discharge. For example, if the battery capacity is set to 100AH, then with a discharge current of 0.2C10, it would be 20A; the discharge cutoff voltage, corresponding to 30% battery capacity discharge, is typically 12V.

[0144] S14: Check if the discharge current is normal, i.e., determine if the control current and the actual discharge feedback current correspond. If yes, proceed to step S16; if no, proceed to step S19. If they correspond, it indicates no abnormality; if they do not correspond, it indicates an abnormality in the discharge control.

[0145] S15: Determine if discharge is complete. If yes, proceed to step S16. If no, proceed to step S13. By comparing the battery voltage with the set discharge cutoff voltage, discharge is complete when the set cutoff voltage is reached. The discharge cutoff voltage is the voltage point corresponding to discharging 30% of the battery capacity, typically 12V.

[0146] S16: Determine if the desulfurization cycle has been completed. If yes, proceed to step S17. If no, proceed to step S7. Determine whether to continue desulfurization based on the set number of desulfurization cycles; generally, the desulfurization cycle is set to 3 times.

[0147] S17: This section completes the compound desulfurization process.

[0148] S18: End. This section of battery desulfurization is now complete.

[0149] S19: End the current operating condition. This means ending the current charging, pulse desulfurization, and discharging operations.

[0150] S20: Returns the error type. Error types include AC error, DC bus voltage error, ambient temperature error, terminal temperature error, battery undervoltage, and battery terminal high / low temperature error.

[0151] Figure 7 This disclosure illustrates a process diagram for configuring desulfurization markings on battery packs, as shown below. Figure 7 As shown, the process mainly includes the following steps:

[0152] H1: Start, data initialization. Monitoring host data initialization.

[0153] H2: Waiting for input, specifically the input of the desulfurization method.

[0154] H3: Automatic desulfurization trigger mode (1. Timed; 2. Over-limit). Automatic desulfurization trigger mode: Timed: When the timer expires, desulfurizes individual batteries in the system's battery pack sequentially; Over-limit: Desulfurizes batteries whose health condition is below a set value or whose internal resistance is above a set value.

[0155] H4: Manual desulfurization trigger mode (1. Specify; 2. Supplement). This refers to the manual desulfurization trigger mode. Specify: Specify a specific battery in the battery pack to be desulfurized; Supplement: Desulfurize batteries in the battery pack that failed the previous desulfurization attempt.

[0156] H5: Input Exceeds Limits, i.e., determine if the input desulfurized battery number is within the valid range. If yes, proceed to step H8. If no, proceed to step H6.

[0157] H6: Determine if the desulfurization flag is set, i.e., determine if desulfurization is currently in progress. If yes, proceed to step H8. If no, proceed to step H7.

[0158] H7: Sets the desulfurization flag and stores the trigger mode, recording this desulfurization type. Desulfurization types include timed, internal resistance over-limit, health status over-limit, specified, and supplementary.

[0159] H8: End. End of this desulfurization inlet selection.

[0160] Based on the same principle as the aforementioned battery line composite desulfurization method, this disclosure provides a battery line composite desulfurization device. This device is applied to a battery monitoring system, which includes a monitoring host, a battery pack, and multiple acquisition units. The positive and negative terminals of each battery in the battery pack are connected to the first end of the monitoring host through the corresponding acquisition unit. The second end of the monitoring host is connected to the DC bus where the battery pack is located. The acquisition units are also communicatively connected to the monitoring host. The acquisition units are used to control the connection and disconnection between the corresponding battery and the monitoring host according to the instructions sent by the monitoring host.

[0161] Figure 8 A schematic diagram of a battery line desulfurization device provided in this disclosure is shown, such as... Figure 8 As shown, the battery line composite desulfurization device 800 includes a composite condition detection module 810, a target battery determination module 820, a single cell condition determination module 830, a circuit conduction module 840, a charging module 850, a pulse desulfurization module 860, and a discharging module 870.

[0162] The composite condition detection module 810 is used to detect whether the battery monitoring system meets the preset composite desulfurization conditions.

[0163] The target battery determination module 820 is used to determine the target battery that meets the desulfation timing from the battery pack when the battery monitoring system meets the composite desulfation conditions.

[0164] The single-cell condition determination module 830 is used to detect whether the target battery meets the preset single-cell desulfurization conditions.

[0165] The circuit connection module 840 is used to send a connection command to the target acquisition unit corresponding to the target battery through the monitoring host when it is determined that the target battery meets the desulfurization conditions of the single cell, so that the target acquisition unit controls the target battery to connect with the monitoring host.

[0166] The charging module 850 is used to set the circuit between the target battery and the monitoring host to charging mode, and to transmit the power of the DC bus to the target battery after the monitoring host steps down the voltage.

[0167] The pulse desulfurization module 860 is used to output pulses to the target battery for desulfurization through the monitoring host after the target battery has been fully charged.

[0168] The discharge module 870 is used to switch the circuit between the target battery and the monitoring host to discharge mode after the desulfurization is completed, and release the electrical energy of the target battery to the DC bus after being boosted by the monitoring host.

[0169] The battery desulfation device disclosed herein enables highly efficient desulfation of batteries, helping to extend battery life, improve power system reliability, and save user operating costs. Specifically, by collecting parameters such as internal resistance and health status, it can accurately identify the desulfation needs of battery clusters. It employs a combined desulfation method of shallow-cycle high-current charging and pulse charging to desulfate the batteries, enhancing the desulfation effect and improving desulfation efficiency. This contributes to extending battery life, improving power system reliability, and saving user operating costs. The desulfation process requires no manual intervention or external discharge equipment; it utilizes the DC system bus's own load for discharge, without generating high temperatures, thus achieving the technical effects of reduced manpower and energy consumption and enhanced safety and reliability.

[0170] In some embodiments of this disclosure, the combined desulfurization conditions include at least one of the following:

[0171] The AC power is operating normally;

[0172] The voltage of the DC bus is within the preset voltage range;

[0173] The ambient temperature of the battery pack is within the preset temperature range;

[0174] The temperature of the terminals in the battery monitoring system is within the preset temperature range.

[0175] In some embodiments of this disclosure, the target battery determination module 820, when determining a target battery from the battery pack that meets the desulfation timing, is specifically used for:

[0176] Candidate batteries with desulfurization characteristics were identified in the battery pack;

[0177] The candidate battery whose number falls within the preset numbering range and has the highest number is selected as the target battery that meets the desulfation timing.

[0178] In some embodiments of this disclosure, the desulfurization mark is configured for the battery in any of the following cases:

[0179] The battery reaches the preset desulfurization time.

[0180] The battery's health value is below the preset threshold.

[0181] The battery's internal resistance is higher than the preset resistance value;

[0182] A request for desulfurization of the battery has been received.

[0183] In some embodiments of this disclosure, the single-cell condition determination module 830, when used to detect whether the target battery meets the preset single-cell desulfurization conditions, is specifically used for:

[0184] The system detects the battery parameter values ​​of the target battery and obtains the comparison results between the battery parameter values ​​and preset parameter thresholds.

[0185] In response to the comparison results indicating that the values ​​of each battery parameter of the target battery are normal, the monitoring host outputs pulses to the target battery to test and obtain the pulse test results.

[0186] If the pulse test result is normal, a pull-in test is performed on the channel relay in the target acquisition unit corresponding to the target battery to obtain the pull-in test result.

[0187] If the absorption test results are normal, it is determined that the target battery meets the preset desulfurization conditions for individual cells.

[0188] In some embodiments of this disclosure, battery parameter values ​​include the voltage value and temperature value of the target battery, and parameter thresholds include voltage thresholds and temperature thresholds.

[0189] In some embodiments of this disclosure, when the pulse desulfurization module 860 is used to output pulses to the target battery via a monitoring host for desulfurization, it is specifically used for:

[0190] Determine the characteristic parameters of the target battery, including battery capacity and float charge voltage;

[0191] The pulse control parameters of the monitoring host are determined based on the characteristic parameters, which include pulse frequency, pulse width, pulse intensity, pulse amplitude, and pulse output duration.

[0192] It is understood that the modules of the battery line desulfurization device in this embodiment have the function of implementing the corresponding steps of the battery line desulfurization method. This function can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. These modules can be software and / or hardware, and each module can be implemented individually or multiple modules can be integrated. For a detailed description of the functions of each module of the battery line desulfurization device, please refer to the corresponding description of the battery line desulfurization method above; further details will not be repeated here.

[0193] The collection, storage, use, processing, transmission, provision, and disclosure of customer personal information involved in the technical solution disclosed herein comply with the provisions of relevant laws and regulations and do not violate public order and good morals.

[0194] According to embodiments of this disclosure, this disclosure also provides an electronic device, a readable storage medium, and a computer program product.

[0195] Figure 9 A schematic block diagram of an example electronic device that can be used to implement embodiments of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the present disclosure described and / or claimed herein.

[0196] like Figure 9 As shown, the electronic device 900 includes a computing unit 901, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 902 or a computer program loaded into a random access memory (RAM) 903 from a storage unit 908. The RAM 903 may also store various programs and data required for the operation of the electronic device 900. The computing unit 901, ROM 902, and RAM 903 are interconnected via a bus 904. An input / output (I / O) interface 905 is also connected to the bus 904.

[0197] Multiple components in electronic device 900 are connected to I / O interface 905, including: input unit 906, such as keyboard, mouse, etc.; output unit 907, such as various types of displays, speakers, etc.; storage unit 908, such as disk, optical disk, etc.; and communication unit 909, such as network card, modem, wireless transceiver, etc. Communication unit 909 allows electronic device 900 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0198] The computing unit 901 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the computing unit 901 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The computing unit 901 performs the various methods and processes described above, such as the battery line desulfurization method. For example, in some embodiments, the battery line desulfurization method can be implemented as a computer software program tangibly contained in a machine-readable medium, such as storage unit 908. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 900 via ROM 902 and / or communication unit 909. When the computer program is loaded into RAM 903 and executed by the computing unit 901, one or more steps of the battery line desulfurization method described above can be performed. Alternatively, in other embodiments, the computing unit 901 may be configured to perform a battery line compound desulfurization method by any other suitable means (e.g., by means of firmware).

[0199] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0200] The program code used to implement the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a standalone software package partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0201] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0202] To provide interaction with a customer, the systems and techniques described herein can be implemented on a computer having: a display device for displaying information to the customer (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the customer provides input to the computer. Other types of devices can also be used to provide interaction with the customer; for example, feedback provided to the customer can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the customer can be received in any form (including voice input, speech input, or tactile input).

[0203] The systems and technologies described herein can be implemented in computing systems that include back-end components (e.g., as a data server), or computing systems that include middleware components (e.g., an application server), or computing systems that include front-end components (e.g., a client computer with a graphical client interface or web browser through which a client can interact with the implementations of the systems and technologies described herein), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., a communication network). Examples of communication networks include local area networks (LANs), wide area networks (WANs), and the Internet.

[0204] Computer systems can include clients and servers. Clients and servers are generally located far apart and typically interact via communication networks. Client-server relationships are created by computer programs running on the respective computers and having a client-server relationship with each other. Servers can be cloud servers, servers in distributed systems, or servers incorporating blockchain technology.

[0205] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0206] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A method of combined desulphurization of battery cables, characterized in that, The application is applied to a battery monitoring system, the battery monitoring system comprises a monitoring host, a battery pack and a plurality of acquisition units, the positive and negative poles of each battery in the battery pack are connected with the first end of the monitoring host through the corresponding acquisition unit, the second end of the monitoring host is connected with the DC bus line where the battery pack is located, the acquisition unit is also in communication connection with the monitoring host, and the acquisition unit is used for controlling the on-off between the corresponding battery and the monitoring host according to the instruction sent by the monitoring host; the method comprises: detecting whether the battery monitoring system meets the preset composite desulfation condition; when the battery monitoring system meets the composite desulfation condition, determining a target battery meeting the desulfation opportunity from the battery pack; detecting whether the target battery meets the preset single battery desulfation condition; when it is determined that the target battery meets the single battery desulfation condition, sending a connection instruction to the target acquisition unit corresponding to the target battery through the monitoring host, so that the target acquisition unit controls the target battery to be connected with the monitoring host; setting the circuit between the target battery and the monitoring host to be in a charging mode, and transmitting the electric energy of the DC bus line to the target battery after the monitoring host is stepped down; after it is determined that the target battery is fully charged, outputting a pulse to the target battery through the monitoring host to perform desulfation; after it is determined that the desulfation is completed, switching the circuit between the target battery and the monitoring host to be in a discharging mode, and releasing the electric energy of the target battery to the DC bus line after the monitoring host is stepped up.

2. The method of claim 1, wherein, The composite desulfation condition comprises at least one of the following: normal operation of alternating current; the voltage of the DC bus line is within a preset voltage range; the temperature of the environment where the battery pack is located is within a preset temperature range; the temperature of the wiring terminal in the battery monitoring system is within a preset temperature range.

3. The method of claim 1, wherein, The target battery meeting the desulfation opportunity is determined from the battery pack, comprising: determining a candidate battery with a desulfation mark in the battery pack; determining the candidate battery with the number within a preset number range and the earliest number as the target battery meeting the desulfation opportunity.

4. The method of claim 1, wherein, The desulfation mark is configured for the battery in any one of the following cases: the desulfation time set in advance for the battery is reached; the health value of the battery is lower than the preset health value; the internal resistance of the battery is higher than the preset resistance value; a desulfation request for the battery is received.

5. The method of claim 1, wherein, The detection of whether the target battery meets the preset single battery desulfation condition comprises: detecting the battery parameter value of the target battery, obtaining the comparison result of the battery parameter value and the preset parameter threshold value; in response to the comparison result indicating that each battery parameter value of the target battery is normal, outputting a pulse to the target battery through the monitoring host to obtain a pulse test result; In response to the pulse test result being normal, a pull-in test is performed on a channel relay in a target acquisition unit corresponding to the target battery to obtain a pull-in test result; In response to the pull-in test result being normal, it is determined that the target battery meets a preset single battery desulfation condition.

6. The method of claim 5, wherein, The battery parameter value includes a voltage value of the target battery and a temperature value of the target battery, and the parameter threshold value includes a voltage threshold value and a temperature threshold value.

7. The method of claim 1, wherein, Before the pulse is output by the monitoring host to the target battery for desulfation, the method further includes: determining a characteristic parameter of the target battery, wherein the characteristic parameter includes a battery capacity and a floating voltage; determining a pulse control parameter of the monitoring host based on the characteristic parameter, wherein the pulse control parameter includes a pulse frequency, a pulse width, a pulse intensity, a pulse amplitude, and a pulse output duration.

8. A battery cable composite desulfurizing device characterized by comprising: The application is applied to a battery monitoring system, the battery monitoring system includes a monitoring host, a battery pack, and a plurality of acquisition units, the positive and negative electrodes of each battery in the battery pack are connected to a first end of the monitoring host through a corresponding acquisition unit, a second end of the monitoring host is connected to a DC bus on which the battery pack is located, the acquisition unit is also in communication connection with the monitoring host, and the acquisition unit is used to control the on-off between the corresponding battery and the monitoring host according to an instruction sent by the monitoring host; the device includes: a composite condition detection module for detecting whether the battery monitoring system meets a preset composite desulfation condition; a target battery determination module for determining a target battery meeting a desulfation opportunity from the battery pack when the battery monitoring system meets the composite desulfation condition; a single condition determination module for detecting whether the target battery meets a preset single battery desulfation condition; a circuit conduction module for sending a connection instruction to a target acquisition unit corresponding to the target battery through the monitoring host when it is determined that the target battery meets the single battery desulfation condition, so that the target acquisition unit controls the target battery to be connected to the monitoring host; a charging module for setting a circuit between the target battery and the monitoring host as a charging mode, and transmitting electrical energy of the DC bus to the target battery after the electrical energy is stepped down by the monitoring host; a pulse desulfation module for outputting a pulse to the target battery through the monitoring host to perform desulfation after it is determined that the target battery is fully charged; a discharging module for switching the circuit between the target battery and the monitoring host to a discharging mode after it is determined that the desulfation is completed, and releasing electrical energy of the target battery to the DC bus after the electrical energy is stepped up by the monitoring host.

9. An electronic device comprising: at least one processor; and a memory in communication with the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the battery line composite desulfation method of any one of claims 1-7.

10. A non-transitory computer readable storage medium having stored thereon computer instructions, wherein, The computer instructions are for causing the computer to perform the method of battery wire recombination desulfurization according to any one of claims 1-7.

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