Standby power supply system, standby power supply, device and method using waste battery

Abstract

The invention discloses a standby power supply system utilizing waste batteries, a standby power supply, a device and a method, and relates to the technical field of integrated circuit testing, the standby power supply system utilizing the waste batteries comprises a battery module and an input control module, the battery module is composed of a plurality of echelon battery packs, the battery module is connected with the input control module, the input control module is connected with a load, a plurality of waste battery packs are adopted to construct the modular battery system, and the voltage of each battery pack is monitored and sequenced in real time through the input control module, so that the dynamic scheduling discharge based on the voltage state is realized; and stable secondary utilization of the waste batteries is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated circuit testing, and in particular to a backup power supply system, backup power supply, device and method utilizing waste batteries. Background Art

[0002] With the rapid development of energy technology and the in-depth promotion of energy-saving and environmental protection concepts, backup power systems are increasingly widely used in key areas such as communications, industrial control, and data centers. In particular, the importance of backup power systems has become increasingly prominent in terms of continuous power supply for equipment. At the same time, with the vigorous development of the new energy vehicle industry, a large number of retired power batteries can no longer be used in electric vehicles, but they still retain 40%-70% of their energy storage performance. How to efficiently utilize these retired battery resources that still have considerable value has become an important topic of concern to the industry.

[0003] The existing backup power supply system mainly adopts a series power supply solution, and manages the charge and discharge of the battery pack through a battery management system. This type of system usually adopts a centralized control architecture. The system controls the charge and discharge by collecting the basic voltage parameters of the battery pack, and switches to battery power supply mode when the mains power is cut off. At the same time, the system is also equipped with a basic overcharge and over-discharge protection circuit, which protects the battery pack by setting the voltage threshold to ensure the safe operation of the system to a certain extent.

[0004] However, this traditional backup power system faces multiple technical difficulties in actual operation. First, due to the uneven performance of retired batteries, the input power between each battery unit often shows obvious instability; second, when multiple battery packs work together, due to the lack of accurate status monitoring and balancing control mechanism, the energy supply coordination between the battery packs is poor, which can easily cause excessive discharge of individual battery packs or uneven load distribution; in addition, the existing system has limited status monitoring capabilities for individual batteries, making it difficult to detect and handle battery performance degradation or failure problems in a timely manner. These technical defects not only affect the power supply stability of the system, but may also significantly shorten the service life of the battery pack, and even endanger the safe operation of electrical equipment in extreme cases. Summary of the invention

[0005] The main purpose of the present invention is to propose a backup power supply system, backup power supply, device and method for utilizing waste batteries, aiming to solve the technical problem of how to stably realize the secondary utilization of waste batteries.

[0006] To achieve the above object, the present invention provides a backup power supply system using waste batteries, the backup power supply system using waste batteries comprising: a battery module and an input control module;

[0007] The battery module is composed of a plurality of battery packs;

[0008] The battery module is connected to the input control module, and the input control module is connected to the load;

[0009] The input control module is used to monitor the battery voltage of each used battery group in the battery module, sort the voltage of each battery group, and schedule the discharge of the battery module based on the sorting result to obtain the battery output voltage.

[0010] In one embodiment, the backup power supply system using waste batteries further includes: an output power matching module and a charging module;

[0011] The charging module is connected to the battery module, the input end of the output power matching module is connected to the input control module, and the output end of the output power matching module is connected to the load;

[0012] The charging module is used to charge the battery module based on the control of the output power matching module;

[0013] The output power matching module is used to monitor the power demand of the load in real time and adjust the power of the battery output voltage to match the power demand of the load.

[0014] In one embodiment, each of the secondary battery packs is arranged in parallel and connected to the charging module and the input control module;

[0015] The secondary battery pack is used to output electric energy based on the control of the input control module.

[0016] In one embodiment, the input control module includes: a comparison circuit, a sampling circuit, a rectification circuit and a power management circuit;

[0017] The comparison circuit and the sampling circuit are connected to each of the secondary battery packs, the sampling circuit is connected to the rectifier circuit, the power management circuit is connected to the comparison circuit and the sampling circuit, and the rectifier circuit is connected to the output power matching module;

[0018] The comparison circuit is used to compare and sort the voltages of the battery packs;

[0019] The power management circuit is used to dispatch power to each of the battery packs according to the voltage sorting result, and output current and voltage;

[0020] The sampling circuit is used to perform current sampling and monitoring on the current output by each of the battery packs;

[0021] The rectifier circuit is used to stabilize the voltage and current output by each of the cascade battery packs and transmit them to the output power matching module.

[0022] In addition, to achieve the above-mentioned purpose, the present invention also proposes a backup power supply using waste batteries, and the backup power supply using waste batteries includes the above-mentioned backup power supply system using waste batteries.

[0023] In addition, to achieve the above-mentioned purpose, the present invention also proposes a backup power supply device using waste batteries, and the backup power supply device using waste batteries includes the above-mentioned backup power supply system using waste batteries.

[0024] In addition, to achieve the above-mentioned purpose, the present invention also proposes a backup power supply control method using waste batteries, the backup power supply control method using waste batteries comprising:

[0025] Monitor the status of each battery pack;

[0026] Based on the status of each of the secondary battery groups, each of the secondary battery groups is scheduled to discharge and output target electric energy to the load.

[0027] In one embodiment, the step of scheduling the discharge of each of the secondary battery groups based on the state of each of the secondary battery groups and outputting the target electric energy to the load specifically includes:

[0028] Based on the current voltage value in the state of each of the echelon battery groups, the current voltage values ​​are compared and sorted;

[0029] Determining the discharge priority of each of the battery groups based on the sorting result of the current voltage values;

[0030] According to the discharge priority, the secondary battery pack is controlled to output a first current and a first voltage.

[0031] In one embodiment, the step of controlling the secondary battery pack to output the first current and the first voltage according to the discharge priority specifically includes:

[0032] According to the discharge priority, enabling a first-tier battery group to output the first current and the first voltage;

[0033] Detecting the working status of the first-tier battery pack;

[0034] When the first secondary battery group fails or the voltage is too low, the secondary battery group is disconnected, and the first secondary battery group is self-checked and charged;

[0035] Another secondary battery pack is enabled to continue outputting the first current and the first voltage.

[0036] In one embodiment, the step of controlling the secondary battery pack to output the first current and the first voltage according to the discharge priority comprises:

[0037] Monitoring, sampling and analyzing the first current;

[0038] performing rectification and stabilization processing on the first current and the first voltage;

[0039] According to the power demand of the load, the first current and the first voltage are adjusted, thereby adjusting the power of the electric energy output by each of the secondary battery groups.

[0040] The present invention provides a backup power supply system using waste batteries. Specifically, in the present invention, in the backup power supply system, a plurality of waste battery groups are firstly modularly integrated to form a complete battery module system. When the system is started, the input control module monitors the battery voltage of each waste battery group in the battery module in real time, obtains the real-time voltage value of each battery group, and sorts these voltage values. Based on this sorting result, the input control module establishes a dynamic battery group scheduling strategy, determines their discharge order and discharge power according to the voltage state of each battery group, and finally outputs the scheduled electric energy to the load end for use. In the whole process, the system ensures the stability of electric energy output and the rational use of battery groups through real-time monitoring and dynamic scheduling.

[0041] In this application, since multiple waste battery packs are used to build a modular battery system, and the voltage of each battery pack is monitored and sorted in real time through the input control module, dynamic scheduling discharge based on voltage status is realized, which effectively solves the technical problems of uncoordinated energy supply between battery packs and difficulty in monitoring the status of individual batteries in the traditional backup power supply system, thereby realizing efficient utilization of waste batteries and stability of system power supply. Specifically, through the voltage monitoring and sorting mechanism, the system can timely detect battery packs with abnormal voltage and make corresponding adjustments, avoiding the risk of over-discharge of a single battery pack; through the dynamic scheduling strategy based on the sorting results, the system can reasonably distribute the load according to the actual status of each battery pack, ensuring the stability of power output; at the same time, the modular design makes the system have good scalability and maintenance convenience, greatly improving the resource utilization efficiency of waste batteries. This solution based on voltage monitoring and dynamic scheduling solves the technical difficulties in the process of recycling waste batteries and realizes the stable secondary utilization of waste batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0043] Figure 1 A schematic diagram of a functional module structure provided in Embodiment 1 of the backup power supply system using waste batteries of the present invention;

[0044] Figure 2 A schematic diagram of a functional module structure provided for the second embodiment of the backup power supply system using waste batteries of the present invention;

[0045] Figure 3 A schematic diagram of a functional module structure provided in Embodiment 3 of the backup power supply system using waste batteries of the present invention;

[0046] Figure 4 A flow chart of a fourth embodiment of a backup power supply system using waste batteries provided by the present invention;

[0047] Figure 5 A flow chart of a backup power supply system using waste batteries provided in Embodiment 5 of the present invention;

[0048] Figure 6 Another flow chart of the backup power supply system using waste batteries according to the fifth embodiment of the present invention is provided.

[0049] Description of Figure Numbers:

[0050] Label name Label name 10 Battery Module 20 Input Control Module 30 Charging module 40 Output power matching module 201 Comparison Circuit 202 Power management circuit 203 Sampling circuit 204 Rectification circuit

[0051] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, and back), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0054] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0055] The present invention proposes a first embodiment of a backup power system using waste batteries. Figure 1 , the backup power system using waste batteries includes: a battery module 10 and an input control module 20;

[0056] The battery module 10 is composed of a plurality of cascade battery packs;

[0057] The battery module 10 is connected to the input control module 20, and the input control module 20 is connected to the load;

[0058] Among them, the battery module 10 refers to an energy storage unit composed of multiple second-life battery packs in parallel, which is used to store electrical energy and provide power supply when needed. The second-life battery pack refers to a battery pack that has been retired from an electric vehicle and still has 40%-70% energy storage performance. For example, multiple groups of retired batteries from shared electric vehicles can be classified according to performance parameters to form several independent battery pack units. The input control module 20 refers to a control unit responsible for monitoring and managing the operating status of the battery pack, which is used to monitor the battery voltage in real time, perform voltage sorting and schedule discharge. The load represents electrical equipment that needs power supply, such as communication base stations, industrial equipment, etc.

[0059] The battery module 10 serves as the energy storage unit of the system and is responsible for the storage and release of electrical energy; the input control module 20 is responsible for battery status monitoring, voltage sorting and discharge scheduling to ensure the stable operation of the system. Specifically, when the system starts working, the input control module 20 first monitors the voltage of each battery group in the battery module 10 in real time, and sorts the voltage data after obtaining the voltage data. Based on the sorting results, the input control module 20 formulates a discharge scheduling strategy, giving priority to discharging battery groups with higher voltages, while charging or temporarily disconnecting battery groups with lower voltages to achieve dynamic scheduling of battery groups. In this way, the system can make full use of the remaining power of each battery group, while avoiding excessive discharge of a single battery group, and ensuring the stability of the output voltage.

[0060] In some embodiments, the monitoring and scheduling functions of the input control module 20 can be implemented in a variety of ways: Optionally, the voltage comparison circuit 201 is used to sample and compare the voltage of each battery pack, and the digital quantity is obtained through A / D conversion and then sorted and calculated, and then the on and off state of each battery pack is controlled through the IGBT module, and finally the output voltage and current are stabilized through the sampling circuit 203; Optionally, a microcontroller is used to collect the voltage signal of each battery pack, and the voltage value is sorted through a software algorithm, and the dynamic switching of the battery pack is realized in combination with a relay array, and the output voltage is stabilized through a DC-DC conversion circuit. It is understandable that other circuit structures or control methods can also be used to implement battery monitoring and scheduling functions, which are not limited here.

[0061] In some embodiments, the organization of the battery module 10 can be realized in a variety of ways: optionally, the cascade batteries with similar performance are connected in series to form a basic battery group, and multiple basic battery groups are connected in parallel to form the battery module 10, and the balanced charge and discharge of the batteries in the group are realized through the balancing circuit; optionally, a modular design is adopted, and each battery group is used as an independent functional unit, equipped with an independent protection circuit and communication interface, and supports hot-swap replacement and capacity expansion. It is understandable that the battery module 10 structure can also be organized in other ways, which are not limited here.

[0062] In the present application, since a plurality of waste battery packs are used to construct a modular battery system, and the voltage of each battery pack is monitored and sorted in real time through the input control module 20, dynamic scheduling discharge based on voltage status is realized, which effectively solves the technical problems of uncoordinated energy supply between battery packs and difficulty in monitoring the status of a single battery in the traditional backup power supply system, thereby realizing efficient utilization of waste batteries and stability of system power supply. Specifically, through the voltage monitoring and sorting mechanism, the system can timely detect battery packs with abnormal voltage and make corresponding adjustments, avoiding the risk of over-discharge of a single battery pack; through the dynamic scheduling strategy based on the sorting results, the system can reasonably distribute the load according to the actual status of each battery pack, ensuring the stability of power output; at the same time, the modular design makes the system have good scalability and maintenance convenience, greatly improving the resource utilization efficiency of waste batteries. This solution based on voltage monitoring and dynamic scheduling solves the technical difficulties in the process of recycling waste batteries and realizes stable secondary utilization of waste batteries.

[0063] The present invention proposes a second embodiment of a backup power system using waste batteries. Figure 2 , this embodiment provides a more specific backup power system structure utilizing waste batteries.

[0064] The backup power supply system using waste batteries further includes: an output power matching module 40 and a charging module 30;

[0065] The charging module 30 is connected to the battery module 10 , the input end of the output power matching module 40 is connected to the input control module 20 , and the output end of the output power matching module 40 is connected to a load.

[0066] The output power matching module 40 is a multi-state intelligent power adjustment unit, which is used to achieve accurate matching of load power demand through time domain and frequency domain characteristic parameter analysis and voltage-current relationship monitoring. For example, the module can achieve accurate judgment and dynamic adjustment of the system operation status by collecting waveform indicators, frequency characteristics and voltage-current relationship parameters of the output current.

[0067] The output power matching module 40 realizes system status monitoring and power regulation through multi-dimensional parameter analysis. Specifically, the working process of this module can be divided into the following stages:

[0068] Parameter collection stage: The output power matching module 40 collects the voltage and current data output by the output power matching module 40 in real time to obtain complete waveform information. In the time domain, the first characteristic parameters such as the variance, mean square value, root mean square value, skewness, kurtosis, waveform index, margin, pulse, peak value and kurtosis index of the waveform are calculated; in the frequency domain, the second characteristic parameters such as the frequency mean, center of gravity frequency, frequency root mean square, frequency variance and frequency kurtosis are analyzed and obtained; at the same time, based on the relationship between the output voltage and current, the third characteristic parameters such as the amplitude amplification factor, the amplitude-frequency characteristic curve correlation coefficient, the phase difference, the phase-frequency characteristic curve correlation coefficient and the power factor are extracted.

[0069] State judgment stage: The output power matching module 40 makes a real-time judgment on the operating state of the output power matching module 40 itself based on the collected multi-dimensional characteristic parameters, and divides the operating state of the output power matching module 40 into four states: normal state, warning state, emergency state, and recovery state. When all parameters are within the normal range, the output power matching module 40 is in a normal state; when some parameters are slightly abnormal but have not yet affected the normal operation of the system, it enters the warning state; when key parameters exceed the safe range, the output power matching module 40 enters the emergency state; when the abnormal situation is alleviated and the system gradually returns to normal, it enters the recovery state.

[0070] Power regulation stage: Based on the status judgment result, the output power matching module 40 adopts the corresponding power regulation strategy. In the normal state, the output power matching module 40 maintains a stable output; in the alert state, the system increases the sampling frequency and prepares to start the protection measures; in the emergency state, the output power matching module 40 may need to reduce the output power or start the backup power supply; in the recovery state, the output power matching module 40 gradually increases the output power until it returns to normal.

[0071] In some embodiments, the state monitoring and power regulation functions can be implemented in a variety of ways: optionally, a digital signal processor is used to calculate waveform characteristic parameters in real time, a neural network algorithm is used for state recognition, a fuzzy control strategy is used to implement dynamic power regulation, and data storage and analysis functions are provided to implement system optimization; optionally, a dedicated power analysis chip is used, characteristic parameters are quickly extracted through a hardware acceleration circuit, the operating state is divided based on preset state judgment rules, and precise power regulation is implemented through a digital power control circuit. It is understandable that other methods can also be used to implement the state monitoring and power regulation functions, which are not limited here.

[0072] Through this state monitoring and power regulation solution based on multi-dimensional characteristic parameters, the system can promptly detect and respond to various operating anomalies, ensure the stability and reliability of power supply, and at the same time meet the changes in power demand at the load end through dynamic power regulation, thereby improving the adaptability and safety of the system.

[0073] The charging module 30 is an intelligent battery charging management unit, which is used to realize adaptive charging control and protection according to the state characteristics of the battery pack. For example, the module can automatically select the optimal charging strategy according to the type, capacity, temperature and other parameters of the battery, and monitor and adjust the charging parameters in real time during the charging process.

[0074] The charging module 30 is responsible for the charging process management and safety protection of the battery pack. Specifically, when the system detects that a battery pack needs to be charged, the charging module 30 first detects the status of the battery pack, including parameters such as voltage and temperature. According to the detection results, the charging module 30 selects a suitable charging scheme and adopts a multi-stage charging strategy: in the pre-charging stage, the battery pack with too low voltage is charged with a small current, and then enters the constant current charging stage for the main charging. When the battery voltage is close to full charge, it switches to constant voltage charging, and finally completes the entire charging process with trickle charging. During the charging process, the charging module 30 continuously monitors the charging parameters. Once an abnormal situation is detected, the corresponding protection measures are immediately initiated to ensure the safety of the charging process.

[0075] Meanwhile, in this embodiment, each of the secondary battery packs is arranged in parallel and connected to the charging module 30 and the input control module 20 .

[0076] The parallel connection structure of the cascade battery pack refers to a circuit topology formed by connecting multiple independent battery packs in parallel, which is used to improve the power supply capacity and reliability of the system. For example, each cascade battery pack is equipped with an independent connection port, which is connected to the common bus through a power switch and a protection circuit to achieve flexible parallel operation.

[0077] The parallel connection structure of the echelon battery pack is mainly used to realize the flexible scheduling and power distribution of the battery pack. Specifically, each echelon battery pack is electrically connected through a parallel bus. Each echelon battery pack works independently. When a certain echelon battery pack fails, it will not affect the operation of other echelon battery packs. When the system is running, the input control module 20 can realize the dynamic connection and disconnection of the battery pack according to the state of the battery pack and the load demand, and independently control each echelon battery pack. At the same time, the parallel structure also supports the current-sharing operation of the battery pack, and ensures that the load current of each battery pack is evenly distributed during parallel operation through the current-sharing circuit to avoid excessive loading of certain battery packs.

[0078] In this embodiment, a complete waste battery recycling scheme is constructed: multiple groups of recycled battery packs are connected in parallel to form a reliable power supply network. The output power matching module 40 performs real-time monitoring and judgment on the operating status of the output power matching module 40 itself by performing multi-dimensional parameter analysis on the output current (including time domain characteristic parameters, frequency characteristic parameters and voltage-current relationship parameters), and divides the status into four types: normal, alert, emergency and recovery, and implements corresponding power regulation strategies according to different states and load requirements. The charging module 30 is responsible for implementing a multi-stage charging strategy for the battery pack that needs to be charged, including pre-charging, constant current charging, constant voltage charging and trickle charging, and performs real-time monitoring and protection throughout the process. This architecture enables the system to achieve intelligent scheduling and safety management of battery packs while ensuring power supply reliability.

[0079] Based on the first and / or second embodiments of the present invention, in the third embodiment of the present invention, the same or similar contents as those in the first and second embodiments can be referred to the above description, and will not be described in detail later. Based on the first and / or second embodiments, this embodiment further proposes a more specific structure of the input control module 20, refer to Figure 3 ,as follows:

[0080] The input control module 20 includes: a comparison circuit 201, a sampling circuit 203, a rectification circuit 204 and a power management circuit 202;

[0081] The comparison circuit 201 and the sampling circuit 203 are connected to each of the cascade battery packs, the sampling circuit 203 is connected to the rectifier circuit 204, the power management circuit 202 is connected to the comparison circuit 201 and the sampling circuit 203, and the rectifier circuit 204 is connected to the output power matching module 40;

[0082] The comparison circuit 201 is a circuit unit for comparing and ranking the voltages of each battery pack in real time, and is used to monitor the battery pack status and perform fault diagnosis. For example, the circuit continuously monitors the voltage level of each battery pack through voltage sampling and a comparator array, and generates voltage ranking information.

[0083] The comparison circuit 201 plays a key role in monitoring and early warning in the system. Specifically, the comparison circuit 201 first samples and compares the voltages of all parallel cascade battery packs, generates a voltage ranking result and transmits it to the power management circuit 202. When it is detected that the voltage of a battery pack is too low or abnormal, the comparison circuit 201 will immediately identify and issue an early warning signal. At the same time, after the battery pack is disconnected, the comparison circuit 201 will perform a self-test on the battery pack. If the self-test result is normal, the system will arrange for the battery pack to be charged; if an abnormal energy supply is detected, a fault signal will be sent to the power management circuit 202 to trigger the battery pack replacement process.

[0084] The sampling circuit 203 is a circuit unit for real-time monitoring of the output current of the parallel battery pack to ensure power supply safety and battery protection. For example, the circuit monitors the discharge current in real time through a current sensor and has a control function to disconnect a faulty battery pack.

[0085] The sampling circuit 203 is responsible for current monitoring and protection control. Specifically, the sampling circuit 203 performs real-time sampling and monitoring of the discharge current in the parallel circuit to provide accurate current data for the system. When receiving the control signal of the IGBT module, the sampling circuit 203 can perform the disconnection operation of the battery pack and cooperate with the system to complete the isolation of the faulty battery pack. By cooperating with the comparison circuit 201, the sampling circuit 203 can respond to abnormal situations in a timely manner to ensure a smooth transition of the system when replacing or switching battery packs.

[0086] The rectifier circuit 204 is a circuit unit for stabilizing the output of the battery pack, and is used to ensure the stability of the voltage and current of the system output. For example, the circuit converts the output of the parallel battery pack into a stable DC power supply through rectification and filtering.

[0087] The rectifier circuit 204 is responsible for improving the power quality. Specifically, the rectifier circuit 204 receives the output from the parallel battery pack, eliminates voltage fluctuations and ripples through rectification and filtering, and ensures that a stable DC power supply is provided to the load. The circuit cooperates with the sampling circuit 203 to continuously monitor the output parameters, maintain the stability of the output through feedback control, and maintain the continuity of the output even during the battery pack switching process.

[0088] The power management circuit 202 is a circuit unit for controlling the scheduling and management of the battery pack, and is used to optimize power distribution and system reliability. For example, the circuit controls the dynamic scheduling and switching of the battery pack according to the voltage sorting information of the comparison circuit 201.

[0089] The power management circuit 202 is responsible for the core control function of the system. Specifically, the circuit receives the voltage sorting information from the comparison circuit 201, formulates the scheduling strategy of the battery pack based on it, and controls the discharge order of battery packs with different voltage levels. When a battery pack fault signal is received, the management circuit immediately instructs the sampling circuit 203 to disconnect the faulty battery pack and enable the backup battery pack to ensure power supply continuity. For battery packs that are normal in self-test but have too low voltage, the management circuit will arrange for them to be charged; for battery packs that are confirmed to be faulty, a replacement notice will be generated and reported to the management center.

[0090] In this embodiment, the input control module 20 constructs a complete battery management system workflow: first, the comparison circuit 201 performs real-time voltage sampling and comparison on multiple parallel echelon battery groups, generates voltage sorting information and transmits it to the power management circuit 202; the power management circuit 202 formulates a scheduling strategy for the battery group based on the voltage sorting result, determines the discharge order of echelon battery groups with different voltage levels, and controls their working state; the sampling circuit 203 continuously monitors the discharge current of each echelon battery group, provides real-time current data for the system, and has the execution function of disconnecting the faulty battery group; the rectifier circuit 204 receives the output of the echelon battery group and provides a stable DC power supply through rectification and filtering. When the system detects that the battery group voltage is too low or faulty, the comparison circuit 201 immediately sends an early warning signal, and the power management circuit 202 immediately instructs the sampling circuit 203 to disconnect the problematic echelon battery group and enable the backup battery group. For the disconnected echelon battery group, the system will perform a self-check: if the self-check is normal but the voltage is too low, it will enter the charging link; if the fault is confirmed, a replacement notification will be generated and reported to the management center. During the whole process, the rectifier circuit 204 continuously ensures the stability of the output and can maintain stable power supply even during the battery pack switching process.

[0091] In this embodiment, due to the use of the input control module 20 structure in which the comparison circuit 201, the sampling circuit 203, the rectification circuit 204 and the power management circuit 202 work together, and the establishment of a complete battery pack monitoring, scheduling and protection mechanism, it is possible to achieve intelligent management and dynamic scheduling of the cascade battery pack, effectively solving the problems of low battery pack management efficiency, slow fault response, and poor power supply reliability in the traditional backup power supply system, thereby achieving the improvement of battery pack utilization efficiency, the enhancement of system reliability and the reduction of maintenance costs. Specifically, it is manifested in: through real-time voltage comparison and sorting, the optimal scheduling of the battery pack is achieved; through current sampling and disconnection control, the safety of system operation is guaranteed; through rectification and voltage stabilization processing, the stability of the output is ensured; through intelligent fault diagnosis and processing mechanism, the reliability and maintenance efficiency of the system are improved. This modular and intelligent management solution not only improves the use value of waste batteries, but also provides a strong guarantee for the stable operation of the backup power supply system.

[0092] In addition, based on the backup power supply system using waste batteries, the present invention also provides a backup power supply control method using waste batteries. It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, etc. The following takes a device including a backup power supply system using waste batteries as an example to illustrate this embodiment and the following embodiments.

[0093] Based on this, the fourth embodiment of the present invention provides a backup power supply control method using waste batteries, referring to Figure 4 , Figure 4 FIG. 4 is a flow chart of a fourth embodiment of a backup power supply control method using waste batteries.

[0094] Step S10, monitoring the status of each battery pack;

[0095] Among them, monitoring refers to the process of real-time status detection and data collection of battery packs. A used battery pack refers to a used battery pack that has been graded, screened and evaluated for performance. Status refers to the operating parameters and health level of the battery pack, including key indicators such as voltage, current, and temperature. For example, by configuring a variety of sensors, the operating data of the battery pack can be collected and analyzed in real time to evaluate its availability and health.

[0096] Specifically, the system first detects the voltage of each battery pack through the voltage sampling circuit to obtain the voltage value and fluctuation trend; at the same time, the current sensor is used to monitor the discharge current and evaluate the load condition; the temperature sensor is responsible for monitoring the operating temperature of the battery pack to prevent overheating risks. The system will conduct a comprehensive analysis of the collected multi-dimensional data to evaluate the health status and availability level of each battery pack, providing a basis for subsequent scheduling decisions. When an abnormal state is detected, the system will immediately issue a warning signal.

[0097] Step S20, based on the status of each of the secondary battery groups, scheduling the discharge of each of the secondary battery groups to output target electric energy to the load;

[0098] Discharge scheduling refers to the process of managing and controlling power supply based on the battery pack status assessment results. The target power refers to the power output with specific voltage and current parameters that meet the load requirements. The load refers to the electrical equipment or system that needs power supply. For example, the discharge sequence and power distribution of multiple battery packs are controlled by the power management circuit to ensure stable and reliable power supply to the load.

[0099] The dispatching discharge process starts after the system confirms the status of the echelon battery pack. Specifically, the system first prioritizes each echelon battery pack according to the status monitoring results, and gives priority to the echelon battery packs in good condition for power supply. During the discharge process, the system adjusts the output parameters through the power control circuit to ensure the stability of power supply. When it is detected that a battery pack is in an abnormal state or low on power, the system will smoothly switch to another echelon battery pack to ensure power supply continuity. Throughout the process, the system continuously monitors the output power quality, maintains voltage stability through closed-loop control, and meets the power demand of the load.

[0100] In general, the overall workflow of the backup power supply control method using waste batteries provided in this embodiment is as follows: the system first uses a variety of sensors to monitor all battery packs in an all-round manner, including real-time collection of key parameters such as voltage, current, and temperature. After the collected data is processed and analyzed, the system evaluates the health status and availability level of each battery pack. Based on the evaluation results, the system prioritizes each battery pack and determines the discharge order. Subsequently, the system preferentially calls the battery pack with the best state to supply power, and accurately adjusts the output parameters through the power control circuit to ensure that stable power is provided to the load. During the power supply process, the system continuously monitors the operating status and output parameters of each battery pack. When it is detected that the battery pack in the working state is abnormal or the power is insufficient, the system will automatically switch to the next priority battery pack to continue to supply power, realizing seamless switching. At the same time, the system performs fault diagnosis and charging maintenance on the disconnected battery pack, and re-incorporates it into the scheduling sequence after it returns to normal. Throughout the process, the system ensures the output power quality through closed-loop control to meet the continuous power supply needs of the load.

[0101] In the embodiment of the present application, due to the adoption of an intelligent scheduling strategy based on real-time status monitoring, dynamic evaluation and priority sorting of each echelon battery pack is performed, and automatic switching and maintenance under abnormal conditions are realized, so that the residual value of the waste batteries can be fully utilized, the reliability and continuity of the power supply of the system are ensured, and the problems of low utilization rate and poor power supply stability of waste batteries in traditional backup power supply systems are effectively solved, thereby realizing efficient recycling of waste batteries and intelligent operation of the backup power supply system. Through the coordinated scheduling and fault self-healing mechanism of multiple echelon battery packs, the power supply reliability and service life of the system are significantly improved, while the construction and maintenance costs of the backup power supply system are reduced, which has significant economic and environmental value.

[0102] Based on the fourth embodiment of the present invention, in the fifth embodiment of the present invention, the same or similar contents as those in the fourth embodiment can be referred to the above introduction, and will not be described in detail later. Figure 5 Based on the fifth embodiment, this embodiment provides a more specific radio frequency conversion method as follows:

[0103] Step S201, monitoring the status of each battery pack;

[0104] This step may refer to step S10 and will not be described in detail here.

[0105] Step S202, based on the current voltage value in the state of each of the echelon battery groups, comparing and sorting the current voltage values;

[0106] Among them, the current voltage value refers to the voltage data obtained by each battery pack in real-time monitoring. Comparison refers to the process of comparing the voltage values ​​of multiple groups of batteries. Sorting means arranging them in order according to the magnitude relationship of the voltage values. For example, the real-time voltage value of each battery pack is obtained through the voltage sampling circuit, and the voltage size is compared using the comparator array, and finally the voltage sorting result from high to low is generated.

[0107] Voltage comparison and sorting are performed before the system makes a scheduling decision. Specifically, the system first collects the real-time voltage values ​​of each battery pack through a high-precision voltage sampling circuit to ensure the accuracy of the sampled data. The sampled data is processed by signal conditioning and digital filtering to eliminate interference. Subsequently, the system uses a comparator circuit or a digital comparison algorithm to compare the processed voltage values ​​in pairs to determine the relative size relationship of the voltage values. Finally, the sorting algorithm is executed based on the comparison results to generate a complete voltage sorting table, which provides a basis for subsequent priority determination.

[0108] In some embodiments, the voltage comparison and sorting functions can be implemented in a variety of ways: optionally, using a precision voltage sampling chip to obtain voltage data, performing real-time comparison through a hardware comparator array, using a sorting algorithm to process the comparison results, and having a data verification function; optionally, using a digital signal processor to implement voltage acquisition through multi-channel synchronous sampling, equipped with a digital filtering algorithm to improve data quality, and support fast sorting functions. It is understandable that other methods can also be used to implement voltage comparison and sorting functions, which are not limited here.

[0109] Step S203, determining the discharge priority of each of the battery groups according to the sorting result of the current voltage values;

[0110] Among them, discharge priority refers to the level indicator that determines the discharge order of battery groups. The sorting result indicates the arrangement order of the battery group voltage values. Determining the priority refers to the process of assigning a discharge order to each battery group according to the voltage sorting. For example, according to the order of voltage values ​​from high to low, the order in which each battery group participates in the discharge is determined to achieve reasonable scheduling of the battery group.

[0111] Priority determination is performed immediately after voltage sorting is completed. Specifically, the system analyzes the voltage sorting results and, combined with the preset priority strategy, assigns a discharge priority level to each echelon battery pack. Generally, battery packs with higher voltages are given higher discharge priorities to ensure power supply efficiency. At the same time, the system also considers the historical usage records and health status of the battery pack, and ensures the rationality of priority allocation through comprehensive evaluation. After the priority is determined, the system generates a scheduling instruction list to provide a decision basis for subsequent discharge control.

[0112] In some embodiments, the discharge priority determination function can be implemented in a variety of ways: optionally, a priority evaluation algorithm is used to process the sorting data, multiple influencing factors are considered through weight calculation, a dynamic adjustment mechanism is equipped to adapt to changes in the operating state, and a priority conflict processing function is provided; optionally, a dedicated scheduling management module is used to determine the basic priority through preset rules, an adaptive adjustment algorithm is equipped to optimize the allocation results, and a manual intervention function is supported. It is understandable that other methods can also be used to implement the discharge priority determination function, which is not limited here.

[0113] Step S204, controlling the secondary battery pack to output a first current and a first voltage according to the discharge priority;

[0114] The first current refers to the target current value of the system controlling the output of the battery pack. The first voltage refers to the target voltage value of the system controlling the output of the battery pack. Control refers to the process of adjusting the output parameters of the battery pack through power electronic devices. For example, the power control circuit controls the output state of each battery pack according to the discharge priority order to ensure that the system outputs stable voltage and current.

[0115] Output control is performed after the discharge priority is determined. Specifically, the system first determines the combination of echelon battery packs participating in the power supply according to the discharge priority list. The high-priority battery packs are connected one by one through the power control circuit, and their output parameters are adjusted. During this process, the system monitors the output voltage and current in real time and ensures output stability through closed-loop control. When it is detected that the output parameters deviate from the target value, the system will automatically adjust the control strategy and switch the backup battery pack if necessary to maintain stable power supply. At the same time, the system will also charge the echelon battery pack with lower voltage.

[0116] In some embodiments, the output control function can be implemented in a variety of ways: optionally, an intelligent power controller is used to adjust the output parameters, precise control is achieved through closed-loop feedback, overvoltage and overcurrent protection circuits are equipped to ensure safe operation, and soft start function is provided; optionally, a digital power control chip is used to achieve output regulation through PWM modulation, and a current sharing control function is provided to ensure stable parallel operation and support multiple protection functions. It is understandable that other methods can also be used to implement the output control function, which is not limited here.

[0117] Step S205, monitoring, sampling and analyzing the first current;

[0118] Among them, monitoring refers to the process of real-time observation of current. Sampling refers to the operation of collecting current values ​​at a specific frequency. Analysis refers to the process of processing and evaluating the collected current data. The first current refers to the current output by the cascade battery pack. For example, the output current value is collected in real time by the current sensor, and the sampled data is analyzed and processed to evaluate the stability and change trend of the current.

[0119] Current monitoring sampling is carried out continuously during the system output control process. Specifically, the system monitors the output current in real time through a high-precision Hall current sensor and uses synchronous sampling technology to collect data at a preset frequency. The collected raw data is pre-processed by the signal conditioning circuit to eliminate noise interference. Subsequently, the system uses digital signal processing technology to analyze the sampled data, calculate characteristic parameters such as the mean value and fluctuation range of the current, evaluate the stability of the output current, and provide a basis for subsequent adjustment and control.

[0120] In some embodiments, the current monitoring sampling and analysis function can be implemented in a variety of ways: optionally, a high-precision current sensor is used for real-time monitoring, synchronous sampling is performed through a data acquisition system, and a digital filtering algorithm is used to process the sampled data, while having a data storage function; optionally, a dedicated current detection chip is used to implement current monitoring through multi-channel sampling, equipped with a real-time analysis algorithm to evaluate current characteristics, and support abnormal alarm functions. It is understandable that other methods can also be used to implement the current monitoring sampling and analysis function, which is not limited here.

[0121] Step S206, performing rectification and stabilization processing on the first current and the first voltage;

[0122] Among them, rectification refers to the process of converting current into stable direct current. Stabilization processing refers to the operation of eliminating voltage and current fluctuations by filtering and other means. The first current and the first voltage refer to the current and voltage output by the system, respectively. For example, the output power is processed by the rectification circuit and the filtering circuit to ensure that a stable direct current power supply is provided to the load.

[0123] The rectification stabilization process is performed after current monitoring and analysis. Specifically, the system first converts the input electrical energy into direct current through a rectifier bridge, and then eliminates the ripple through an LC filter circuit to achieve preliminary stabilization of the first voltage and the first current. The system is also equipped with an active filter circuit to further suppress high-frequency interference and voltage fluctuations. During the stabilization process, the system continuously monitors the output parameters and dynamically adjusts the filter parameters through feedback control to ensure the stability of the output. When a large fluctuation is detected, the system will start compensation and quickly restore the stable state.

[0124] In some embodiments, the rectification stabilization processing function can be implemented in a variety of ways: optionally, a full-bridge rectifier circuit is used for AC / DC conversion, ripple is reduced by multi-stage LC filtering, an active filter circuit is equipped to suppress interference, and an overvoltage protection function is provided; optionally, an intelligent rectifier controller is used to improve efficiency through synchronous rectification, a digital control filter algorithm is equipped to optimize stability, and dynamic power factor correction is supported. It is understandable that other methods can also be used to implement the rectification stabilization processing function, which is not limited here.

[0125] Step S207, adjusting the first current and the first voltage according to the power demand of the load, and further adjusting the power of the electric energy output by each of the secondary battery groups;

[0126] Among them, power demand refers to the voltage, current and power parameters required by the load. Power adjustment refers to the process of changing the output characteristics of the battery pack according to the load demand. The load refers to the power-consuming device or system. For example, the power control circuit dynamically adjusts the output parameters to meet the power demand of the load under different working conditions.

[0127] Power adjustment is performed after receiving the load demand signal. Specifically, the system first obtains the real-time power demand of the load through the load monitoring circuit, including the required voltage, current and power level. Based on the monitoring results, the system calculates the required output parameter adjustment amount and adjusts the output state of each battery pack through the power control circuit. During the adjustment process, the system uses a soft start method to change the output parameters to avoid sudden changes that cause shocks to the load. At the same time, the effect of adjusting the output power is continuously monitored through closed-loop control to ensure that the output parameters are accurately matched with the load demand.

[0128] In some embodiments, the power adjustment function can be implemented in a variety of ways: optionally, an intelligent power controller is used to adjust the output parameters in real time, the control accuracy is ensured through closed-loop feedback, a soft start circuit is equipped to reduce the adjustment impact, and an overload protection function is provided; optionally, a digital power management system is used to optimize the adjustment strategy through a predictive control algorithm, dynamic response compensation is provided to increase the adjustment speed, and multi-mode operation switching is supported. It is understandable that other methods can also be used to implement the power adjustment function, which is not limited here.

[0129] Furthermore, this embodiment also provides a more detailed implementation scheme for controlling the step of outputting the first current and the first voltage of the cascade battery pack according to the discharge priority, as follows, please refer to Figure 6 .

[0130] Step S301, according to the discharge priority, enabling a first-tier battery group to output the first current and the first voltage;

[0131] Among them, activation refers to the process of putting the echelon battery pack into working state. The first echelon battery pack refers to the battery pack with the highest priority. The discharge priority refers to the level indicator that determines the discharge order of the echelon battery pack. The first current and the first voltage refer to the standard output parameters required by the system. For example, the echelon battery pack with the highest priority is turned on through the control circuit so that it supplies power to the load according to the set parameters.

[0132] The battery pack activation is executed immediately after the system determines the discharge priority. Specifically, the system first selects the battery pack with the highest ranking as the first-tier battery pack according to the priority list. The battery pack is gradually connected through the input control module. The system also starts the output parameter control to achieve precise regulation of voltage and current through modulation. During the startup process, the system continuously monitors the output parameters to ensure that they rise smoothly to the target value and maintain a stable output state.

[0133] In some embodiments, the battery pack enabling function can be implemented in a variety of ways: optionally, an intelligent switch controller is used to perform the startup operation, a soft start process is implemented through ramp control, an overcurrent protection circuit is equipped to ensure safe startup, and a parameter recording function is provided; optionally, a dedicated power management chip is used to optimize the startup process through multi-phase control, a startup status monitoring function is provided, and a fault protection function is supported. It is understandable that other methods can also be used to implement the battery pack enabling function, which is not limited here.

[0134] Step S302, detecting the working state of the first-tier battery pack;

[0135] Among them, detection refers to the process of monitoring the operating parameters of the echelon battery pack. The working status indicates the operating status of the echelon battery pack, including parameters such as voltage, current, and temperature. The first echelon battery pack refers to the main echelon battery pack that is currently supplying power. For example, various parameters of the echelon battery pack are monitored in real time through a variety of sensors to evaluate the stability and safety of its working status.

[0136] The working status detection is carried out continuously after the echelon battery pack is enabled. Specifically, the system monitors the output voltage of the echelon battery pack in real time through the voltage detection circuit, monitors the discharge current with the current sensor, and monitors the working temperature with the temperature sensor. The system analyzes the collected data in real time to evaluate whether the working status of the echelon battery pack is normal. At the same time, the system also monitors the internal resistance change and capacity loss of the echelon battery pack, and judges whether the echelon battery pack is in a healthy working state through comprehensive analysis.

[0137] In some embodiments, the working state detection function can be implemented in a variety of ways: optionally, a multi-parameter detection system is used for state monitoring, the working state is evaluated through a data analysis algorithm, an abnormal diagnosis function is equipped to identify potential problems, and a data recording function is provided; optionally, an intelligent battery management system is used to monitor the operating state through real-time parameter collection, a health assessment algorithm is equipped to analyze the working performance, and an early warning function is supported. It is understandable that other methods can also be used to implement the working state detection function, which is not limited here.

[0138] Step S303, when the first secondary battery pack fails or the voltage is too low, disconnect the second secondary battery pack, and perform self-check and charging on the first secondary battery pack;

[0139] Among them, fault refers to an abnormal situation that occurs during the operation of the secondary battery pack. Low voltage refers to the state where the output voltage is lower than the set threshold. Disconnection refers to the operation of isolating the secondary battery pack from the system. Self-check refers to the process of the system automatically diagnosing the fault of the secondary battery pack. Charging refers to the process of replenishing the power of the secondary battery pack. For example, when an abnormality of the secondary battery pack is detected, the system automatically disconnects it from the load and performs fault diagnosis and charging maintenance.

[0140] Fault handling is performed immediately after an abnormality is detected in the secondary battery pack. Specifically, when the system finds that the secondary battery pack has a fault or the secondary voltage drops below the threshold, the protection circuit will first quickly cut off the connection between the secondary battery pack and the system. Then the automatic diagnosis program is started to determine the type and cause of the fault through multiple parameter tests. The system decides whether to charge based on the diagnosis results. If charging is determined to be necessary, the intelligent charging program is started and a multi-stage charging strategy is used to replenish the battery pack.

[0141] In some embodiments, the fault handling function can be implemented in a variety of ways: optionally, an intelligent fault diagnosis system is used for fault identification, a multi-level protection circuit is used to achieve safe disconnection, an adaptive charging controller is equipped to perform charging operations, and a status recording function is provided; optionally, a dedicated battery management chip is used to determine the fault type through fault feature analysis, a multi-mode charging strategy is provided to optimize the charging effect, and a remote monitoring function is supported. It is understandable that other methods can also be used to implement the fault handling function, which is not limited here.

[0142] Step S304, enabling another secondary battery pack to continue outputting the first current and the first voltage;

[0143] The other battery pack refers to a spare battery pack. Enabling refers to the process of putting the other battery pack into operation. The first current and the first voltage refer to standard output parameters required by the system. For example, when the main battery pack fails, the system automatically switches to the other battery pack to ensure the continuity of power supply.

[0144] The secondary battery pack switching is performed immediately after the main battery pack is disconnected. Specifically, the system selects the next highest priority secondary battery pack as the new power supply unit according to the discharge priority list. The corresponding switching circuit is used to achieve smooth switching of the secondary battery pack, and a transition control strategy is used to avoid voltage fluctuations during the switching process. The system continuously monitors the output parameters during the switching process to ensure that the newly enabled secondary battery pack can stably output the required voltage and current to maintain the normal operation of the load.

[0145] In some embodiments, the standby switching function can be implemented in a variety of ways: optionally, an intelligent switching controller is used to perform cascade battery pack switching, a transition compensation circuit is used to maintain output stability, a parallel current sharing control is used to ensure smooth switching, and a switching record function is provided; optionally, a power management system is used to optimize the switching process through pre-charge control, an output parameter compensation function is provided, and multiple protection functions are supported. It is understandable that other methods can also be used to implement the standby switching function, which is not limited here.

[0146] The embodiment of the present invention further provides a backup power supply utilizing waste batteries, wherein the backup power supply utilizing waste batteries is provided with the backup power supply system utilizing waste batteries.

[0147] The embodiment of the present invention further provides a backup power supply device using waste batteries, wherein the backup power supply device using waste batteries is provided with the backup power supply system using waste batteries.

[0148] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A backup power system using waste batteries, characterized in that: The backup power supply system using waste batteries comprises: a battery module and an input control module; The battery module is composed of a plurality of battery packs; The battery module is connected to the input control module, and the input control module is connected to the load; The input control module is used to monitor the battery voltage of each used battery group in the battery module, sort the voltage of each battery group, and schedule the discharge of the battery module based on the sorting result to obtain the battery output voltage.

2. The backup power supply system using waste batteries as claimed in claim 1, characterized in that: The backup power supply system using waste batteries also includes: an output power matching module and a charging module; The charging module is connected to the battery module, the input end of the output power matching module is connected to the input control module, and the output end of the output power matching module is connected to the load; The charging module is used to charge the battery module based on the control of the output power matching module; The output power matching module is used to monitor the power demand of the load in real time and adjust the power of the battery output voltage to match the power demand of the load.

3. The backup power supply system using waste batteries as claimed in claim 2, characterized in that: Each of the secondary battery packs is arranged in parallel and connected to the charging module and the input control module; The secondary battery pack is used to output electric energy based on the control of the input control module.

4. The backup power supply system using waste batteries as claimed in claim 3, characterized in that: The input control module includes: a comparison circuit, a sampling circuit, a rectification circuit and an electric energy management circuit; The comparison circuit and the sampling circuit are connected to each of the secondary battery packs, the sampling circuit is connected to the rectifier circuit, the power management circuit is connected to the comparison circuit and the sampling circuit, and the rectifier circuit is connected to the output power matching module; The comparison circuit is used to compare and sort the voltages of the battery packs; The power management circuit is used to dispatch power to each of the battery packs according to the voltage sorting result, and output current and voltage; The sampling circuit is used to perform current sampling and monitoring on the current output by each of the battery packs; The rectifier circuit is used to stabilize the voltage and current output by each of the cascade battery packs and transmit them to the output power matching module.

5. A backup power source using waste batteries, characterized in that: The backup power supply utilizing waste batteries comprises a backup power supply system utilizing waste batteries as described in any one of claims 1 to 4.

6. A backup power supply device using waste batteries, characterized in that: The backup power supply device utilizing waste batteries comprises the backup power supply system utilizing waste batteries as described in any one of claims 1 to 4.

7. A backup power supply control method using waste batteries, characterized in that: The backup power supply control method utilizing waste batteries comprises: Monitor the status of each battery pack; Based on the status of each of the secondary battery groups, each of the secondary battery groups is scheduled to discharge and output target electric energy to the load.

8. The backup power supply control method using waste batteries as claimed in claim 7, characterized in that: The step of scheduling discharge of each of the secondary battery groups based on the state of each of the secondary battery groups and outputting target electric energy to the load specifically includes: Based on the current voltage value in the state of each of the echelon battery groups, the current voltage values ​​are compared and sorted; Determining the discharge priority of each of the battery groups based on the sorting result of the current voltage values; According to the discharge priority, the secondary battery pack is controlled to output a first current and a first voltage.

9. The backup power supply control method using waste batteries as claimed in claim 8, characterized in that: The step of controlling the secondary battery pack to output the first current and the first voltage according to the discharge priority specifically includes: According to the discharge priority, enabling a first-tier battery group to output the first current and the first voltage; Detecting the working status of the first-tier battery pack; When the first secondary battery group fails or the voltage is too low, the secondary battery group is disconnected, and the first secondary battery group is self-checked and charged; Another secondary battery pack is enabled to continue outputting the first current and the first voltage.

10. The backup power supply control method using waste batteries as claimed in claim 9, characterized in that: The step of controlling the secondary battery pack to output a first current and a first voltage according to the discharge priority may then include: monitoring, sampling and analyzing the first current; performing rectification and stabilization processing on the first current and the first voltage; According to the power demand of the load, the first current and the first voltage are adjusted, thereby adjusting the power of the electric energy output by each of the secondary battery groups.

Images