Method for performing battery protection by applying inverter and battery power supply system

Abstract

The invention discloses a method for battery protection by using an inverter, which is applied to a battery power supply system, the battery power supply system comprises an acquisition end, an inverter and an inversion control end arranged on the inverter, and the method comprises the following steps: the acquisition end acquires operation parameter information of a target battery in real time, and sends the operation parameter information to the inversion control end; the inverter control end judges whether the state of the target battery is abnormal or not according to the operation parameter information, and if yes, output of charging of the inverter to the target battery or output of discharging of the inverter to the target battery is stopped. According to the invention, the charging and discharging protection function is integrated on the inversion control end of the inverter, so that the inverter autonomously determines whether to close the output waveform, a charging and discharging MOS tube on the battery protection board is not needed to determine whether to close the output waveform, the function of the battery protection board is replaced, indirect protection of the target battery is realized, and the reliability of the battery is improved. Therefore, switching loss and hardware cost are reduced, and energy conversion efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of power electronics technology, and particularly to a method for protecting a battery by using an inverter and a battery power supply system. Background Art

[0002] In the prior art, a lithium battery pack is usually connected to an inverter through a lithium battery protection board to achieve protection functions such as overcharge, over-discharge, and short circuit of a target battery. A charge and discharge MOS transistor is integrated on a traditional lithium battery protection board to control the charging and discharging processes of the target battery. When the state of the target battery is abnormal, the protection board cuts off the connection between the target battery and the load or charger through the charge and discharge MOS transistor, so as to protect the target battery from damage.

[0003] However, integrating a charge and discharge MOS transistor on the battery protection board will generate switching losses. Especially in some topologically cascaded multi-stage protection boards, the cumulative switching losses generated by the multi-stage charge and discharge MOS transistors account for a higher proportion of the total losses of the battery power supply system, seriously affecting the overall energy conversion efficiency of the battery power supply system. Moreover, integrating a charge and discharge MOS transistor on the battery protection board will also increase the system cost, which has a greater impact on battery power supply systems such as portable power devices and outdoor energy storage devices. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method for protecting a battery by using an inverter and a battery power supply system, which reduces switching losses and hardware costs and improves energy conversion efficiency.

[0005] To solve the above technical problem, the technical solution adopted by the present invention is as follows: A method for protecting a battery by using an inverter, which is applied to a battery power supply system. The battery power supply system includes a collection end, an inverter, and an inversion control end provided on the inverter. The method includes the following steps: S1. The collection end collects operation parameter information of a target battery in real time and sends the operation parameter information to the inversion control end; S2. The inversion control end determines whether the state of the target battery is abnormal according to the operation parameter information. If so, it stops the output of the inverter for charging the target battery or stops the output of the inverter for discharging the target battery. To solve the above technical problem, another technical solution adopted by the present invention is as follows: A battery power supply system for protecting a battery by using an inverter includes a collection board and an inverter for electrically connecting to a target battery; The acquisition board is provided with a sampling port and a sending port, and the inverter control module of the inverter is provided with a receiving port. The sampling port is communicatively connected to the target battery, and the sending port is communicatively connected to the receiving port; The acquisition board serves as the acquisition end and the inverter control module serves as the inverter control end, and the following steps are executed: S1. The acquisition end continuously acquires the operation parameter information of the target battery and sends the operation parameter information to the inverter control end; S2. The inverter control end determines whether the state of the target battery is abnormal according to the operation parameter information. If so, it stops the output of the inverter for charging the target battery or stops the output of the inverter for discharging the target battery. The beneficial effects of the present invention are as follows: A method and a battery power supply system for protecting a battery by using an inverter are provided. The charge and discharge protection function is integrated on the inverter control end of the inverter. By using the output control structure originally carried by the inverter and the newly introduced process for judging the abnormal state of the target battery, it is realized that the inverter independently decides whether to turn off the output waveform, rather than relying on the charge and discharge MOS transistors on the battery protection board to decide whether to turn off the output waveform, replacing this part of the function of the battery protection board, thereby indirectly protecting the target battery, reducing switching losses and hardware costs, and improving energy conversion efficiency. Description of the Drawings

[0006] Figure 1 It is a schematic diagram of the steps of a method for protecting a battery by using an inverter according to the present invention; Figure 2 It is a flowchart of a method for protecting a battery by using an inverter according to the present invention; Figure 3 It is a system block diagram of a battery power supply system for protecting a battery by using an inverter according to the present invention.

[0007] Label Description: 1. Target battery; 2. Inverter; 3. Battery protection board; 4. Inverter control module. Detailed Embodiment

[0008] To describe the technical content, achieved objectives and effects of the present invention in detail, the following is described in conjunction with the embodiments and with reference to the drawings.

[0009] Please refer to Figure 1 , a method for protecting a battery by using an inverter, which is applied to a battery power supply system. The battery power supply system includes an acquisition end, an inverter, and an inverter control end provided on the inverter. The method includes the following steps: S1. The acquisition end collects the operation parameter information of the target battery 1 in real time and sends the operation parameter information to the inverter control end; S2. The inverter control end determines whether the state of the target battery 1 is abnormal according to the operation parameter information. If so, it stops the output of the inverter 2 for charging the target battery 1 or stops the output of the inverter 2 for discharging the target battery 1.

[0010] As can be seen from the above description, the beneficial effect of the present invention is that the charge and discharge protection function is integrated on the inverter control end of the inverter 2. By using the output control structure originally carried by the inverter 2 and the newly introduced process for judging the abnormal state of the target battery 1, the inverter 2 can independently decide whether to turn off the output waveform, without the charge and discharge MOS transistors on the battery protection board 3 to decide whether to turn off the output waveform, replacing this part of the function of the battery protection board 3, realizing indirect protection of the target battery 1, thereby reducing switching losses and hardware costs and improving energy conversion efficiency.

[0011] Further, after stopping the output of the inverter 2 for charging the target battery 1 or stopping the output of the inverter 2 for discharging the target battery 1, it further includes: The inverter control end re-obtains new operation parameter information, determines whether the state of the target battery 1 has returned to normal according to the new operation parameter information. If so, after receiving the start instruction sent by the acquisition end, it resumes the output of the inverter 2 for charging the target battery 1 or resumes the output of the inverter 2 for discharging the target battery 1; otherwise, it returns to execute the step of the inverter control end re-obtaining new operation parameter information.

[0012] As can be seen from the above description, through continuous data collection and analysis, the state of the target battery 1 is accurately judged. After the target battery 1 returns to normal, the charge and discharge output can be restored in time when receiving the start instruction, avoiding the reduction of the use efficiency of the target battery 1 caused by overprotection; without too much manual intervention, the protection and restoration operations can be automatically completed according to the actual state of the target battery 1, which not only reduces the operation and maintenance cost, but also improves the intelligent level of the system, bringing a better and more worry-free use experience to users.

[0013] Further, before S1, it further includes: S0. The inverter control end obtains external configuration data and obtains a preset battery abnormality judgment algorithm from the external configuration data; The specific process of the inverter control end determining whether the state of the target battery 1 is abnormal is as follows: The inverter control end determines whether the state of the target battery 1 is abnormal according to the operation parameter information and the preset battery abnormality judgment algorithm.

[0014] As can be seen from the above description, by pre-setting a preset battery anomaly judgment algorithm on the inversion control terminal of the inverter 2, it is possible to more scientifically and accurately identify the abnormal state of the target battery 1, avoid unnecessary charge and discharge interruptions caused by misjudgment or failure to detect anomalies in a timely manner, thereby enhancing the reliability of the protection of the target battery 1.

[0015] Furthermore, there are at least two types of the preset battery anomaly judgment algorithms; Before S2, it further includes: The inversion control terminal obtains an external adjustment instruction and determines the currently selected preset battery anomaly judgment algorithm according to the external adjustment instruction.

[0016] As can be seen from the above description, by introducing at least two types of preset battery anomaly judgment algorithms and determining the currently selected algorithm through an external adjustment instruction, precise adjustment of the anomaly judgment of the target battery 1 is achieved. Different preset algorithms can specifically identify the anomaly characteristics of the target battery 1 under different working conditions and different aging degrees, ensuring that the system can quickly and accurately judge the state of the target battery 1 in various complex scenarios, greatly improving the timeliness and effectiveness of the protection.

[0017] Furthermore, the acquisition terminal is a battery protection board 3 that omits the charge and discharge MOS transistors; Before S1, it further includes: The inversion control terminal is communicatively connected to the battery protection board 3 according to the communication protocol adapted to the battery protection board 3.

[0018] As can be seen from the above description, the battery protection board 3 that omits the charge and discharge MOS transistors significantly reduces the hardware cost. At the same time, integrating the charge and discharge protection function into the inversion control terminal of the inverter 2 further streamlines the system structure, avoids the setting of duplicate functional modules, and reduces costs.

[0019] Please refer to Figure 3 , a battery power supply system that uses an inverter for battery protection, including an acquisition board and an inverter 2 for electrically connecting to the target battery 1; The acquisition board is provided with a sampling port and a sending port, the inversion control module 4 of the inverter 2 is provided with a receiving port, the sampling port is communicatively connected to the target battery 1, and the sending port is communicatively connected to the receiving port; The acquisition board serves as the acquisition terminal and the inversion control module 4 serves as the inversion control terminal and executes the following steps: S1. The acquisition terminal continuously acquires the operation parameter information of the target battery 1 and sends the operation parameter information to the inversion control terminal; S2. The inverter control terminal determines whether the state of the target battery 1 is abnormal according to the operation parameter information. If so, it stops the output of the inverter 2 for charging the target battery 1 or stops the output of the inverter 2 for discharging the target battery 1.

[0020] As can be seen from the above description, the beneficial effects of the present invention are as follows: The charge and discharge protection function is integrated on the inverter control terminal of the inverter 2. By using the output control structure originally carried by the inverter 2 and the newly introduced process for judging the abnormal state of the target battery 1, the inverter 2 can independently decide whether to turn off the output waveform, without relying on the charge and discharge MOS transistors on the battery protection board 3 to decide whether to turn off the output waveform, thus replacing this part of the function of the battery protection board 3 and achieving indirect protection of the target battery 1, thereby reducing switching losses and hardware costs and improving energy conversion efficiency.

[0021] Further, after stopping the output of the inverter 2 for charging the target battery 1 or stopping the output of the inverter 2 for discharging the target battery 1, the following steps are also included: The inverter control terminal re-acquires new operation parameter information, and determines whether the state of the target battery 1 has returned to normal according to the new operation parameter information. If so, after receiving the start instruction sent by the acquisition terminal, it resumes the output of the inverter 2 for charging the target battery 1 or resumes the output of the inverter 2 for discharging the target battery 1; otherwise, it returns to execute the step of the inverter control terminal re-acquiring new operation parameter information.

[0022] As can be seen from the above description, through continuous data collection and analysis, the state of the target battery 1 can be accurately judged. After the target battery 1 returns to normal, the charge and discharge output can be restored in a timely manner when receiving the start instruction, avoiding the reduction of the usage efficiency of the target battery 1 caused by overprotection; without excessive manual intervention, the protection and restoration operations can be autonomously completed according to the actual state of the target battery 1, which not only reduces the operation and maintenance costs, but also improves the intelligent level of the system, bringing a better and more worry-free usage experience to users.

[0023] Further, before S1, the following steps are also included: S0. The inverter control terminal acquires external configuration data and obtains a preset battery abnormality judgment algorithm from the external configuration data; The specific process of the inverter control terminal determining whether the state of the target battery 1 is abnormal according to the operation parameter information is as follows: The inverter control terminal determines whether the state of the target battery 1 is abnormal according to the operation parameter information and the preset battery abnormality judgment algorithm.

[0024] As can be seen from the above description, by pre-setting a preset battery anomaly judgment algorithm on the inversion control terminal of the inverter 2, the abnormal state of the target battery 1 can be identified more scientifically and accurately, avoiding unnecessary charge and discharge interruptions or failure to detect anomalies in a timely manner due to misjudgment, thereby enhancing the reliability of the protection of the target battery 1.

[0025] Further, there are at least two types of the preset battery anomaly judgment algorithms; Before the step S2, the method further includes: The inversion control terminal obtains an external adjustment instruction and determines the currently selected preset battery anomaly judgment algorithm according to the external adjustment instruction.

[0026] As can be seen from the above description, by introducing at least two types of preset battery anomaly judgment algorithms and determining the currently selected algorithm through an external adjustment instruction, precise adjustment of the anomaly judgment of the target battery 1 is achieved. Different preset algorithms can specifically identify the anomaly characteristics of the target battery 1 under different working conditions and different aging degrees, ensuring that the system can quickly and accurately judge the state of the target battery 1 in various complex scenarios, greatly improving the timeliness and effectiveness of the protection.

[0027] Further, the acquisition terminal is a battery protection board 3 without charge and discharge MOS transistors; Before the step S1, the method further includes: The inversion control terminal is communicatively connected to the battery protection board 3 according to the communication protocol adapted to the battery protection board 3.

[0028] As can be seen from the above description, the battery protection board 3 without charge and discharge MOS transistors significantly reduces the hardware cost. At the same time, the charge and discharge protection function is integrated into the inversion control terminal of the inverter 2, further streamlining the system structure, avoiding the setting of duplicate functional modules, making the overall solution more competitive in terms of economy and reducing costs.

[0029] Please refer to Figure 1 , Embodiment 1 of the present invention is: A method for protecting a battery using an inverter, which is applied to a battery power supply system. The battery power supply system includes an acquisition terminal, an inverter 2, and an inversion control terminal provided on the inverter 2. The method includes the following steps: S0. The inversion control terminal obtains external configuration data and obtains a preset battery anomaly judgment algorithm from the external configuration data; In this embodiment, the inversion control terminal is communicatively connected to the acquisition terminal according to the communication protocol adapted to the battery protection board 3, so as to facilitate the subsequent transmission of the operation parameter information of the target battery 1.

[0030] To meet the usage requirements of different scenarios, at least two preset battery anomaly judgment algorithms are provided; when it is necessary to judge whether the state of the target battery 1 is abnormal, a suitable preset battery anomaly judgment algorithm can be selected to analyze the operation parameter information of the target battery 1, and then a judgment result can be obtained.

[0031] S1. The acquisition end continuously acquires the operation parameter information of the target battery 1 and sends the operation parameter information to the inverter control end; In this embodiment, the acquisition end is the battery protection board 3 that omits the charge and discharge MOS transistors, and in some power devices mainly using lithium batteries, it corresponds to the lithium battery protection board 3; the battery protection board 3 continuously acquires the operation parameter information of the target battery 1 and sends the operation parameter information to the inverter control end, rather than the battery protection board 3 analyzing the operation parameter information by itself and controlling the off state of the charge and discharge MOS transistors.

[0032] S2. The inverter control end judges whether the state of the target battery 1 is abnormal according to the operation parameter information. If so, it stops the output of the inverter 2 for charging the target battery 1 or stops the output of the inverter 2 for discharging the target battery 1.

[0033] Before the judgment, the currently selected preset battery anomaly judgment algorithm is determined according to the external adjustment instruction; then, the inverter control end judges whether the state of the target battery 1 is abnormal according to the operation parameter information and the preset battery anomaly judgment algorithm; if the state of the target battery 1 is abnormal, the inverter 2 immediately closes the output waveform to protect the target battery 1 from damage; if the state of the target battery 1 is normal, the operation state of the inverter 2 is maintained.

[0034] In this embodiment, when it is detected that the state of the target battery 1 is abnormal and the output of the inverter 2 is stopped, the inverter control end re-acquires new operation parameter information and judges whether the state of the target battery 1 has returned to normal according to the new operation parameter information. If so, after receiving the start instruction sent by the acquisition end, it resumes the output of the inverter 2 for charging the target battery 1 or stops the output of the inverter 2 for discharging the target battery 1; otherwise, it returns to execute the step of the inverter control end re-acquiring new operation parameter information.

[0035] Embodiment 2 of the present invention is as follows: A method for protecting a battery by using an inverter. On the basis of the above Embodiment 1, different types of preset battery anomaly judgment algorithms are classified as follows: 1. Threshold-based algorithm 1.1. Simple Threshold Judgment: Set fixed thresholds for various operating parameters of the target battery (such as voltage, current, temperature, etc.). When the parameter exceeds or is lower than the corresponding threshold, it is determined that the target battery is abnormal. For example, when the voltage of the target battery is lower than the lower limit of the normal operating voltage range, or the temperature of the target battery is higher than the safety temperature threshold, the algorithm considers that the target battery is abnormal. This algorithm is simple and direct and easy to implement, but the setting of the threshold needs to be finely adjusted according to the specific type and usage scenario of the target battery, otherwise misjudgment is likely to occur.

[0036] 1.2. Dynamic Threshold Algorithm: Considering that the normal parameter range of the target battery may change at different usage stages and environmental conditions, the dynamic threshold algorithm calculates the threshold suitable for the current situation in real time based on factors such as the historical data of the target battery, the current charging state, and the environmental temperature. For example, as the usage time of the target battery increases, its normal voltage range may gradually decrease, and the dynamic threshold algorithm can adjust the voltage threshold according to the aging degree of the target battery, so as to more accurately judge whether the target battery is abnormal.

[0037] 2. Algorithms Based on Statistical Analysis 2.1. Mean-Standard Deviation Method: Calculate the mean and standard deviation of the operating parameters of the target battery over a period of time. Taking the mean as the center, determine the normal range according to multiples of the standard deviation. Generally, it is considered that the parameter value is normal within the range of the mean plus or minus several times the standard deviation, and exceeding this range may indicate that the target battery is abnormal. For example, if the mean voltage of the target battery is 3.7V and the standard deviation is 0.1V, and the normal range is set as the mean plus or minus 2 times the standard deviation, then when the voltage exceeds the range of 3.5V to 3.9V, the algorithm will consider that the voltage of the target battery is abnormal.

[0038] 2.2. Probability Distribution Method: Determine its probability distribution model by analyzing the historical data of the operating parameters of the target battery. Then judge whether it is abnormal according to the probability of the current parameter value in this distribution. If the probability of a certain parameter value is extremely low, lower than the pre-set threshold, it is considered that the target battery may have an abnormal situation. For example, assuming that the charging current of the target battery follows a normal distribution, when a charging current value appears, and its probability in this normal distribution is less than 1%, the algorithm determines that the charging current of the target battery is abnormal.

[0039] 3. Model-Based Algorithms 3.1 Equivalent circuit model method: Establish an equivalent circuit model of the target battery. By measuring parameters such as the voltage and current of the target battery, use the model to calculate the internal state of the target battery, such as the state of charge (SOC), state of health (SOH), etc. If the calculated state differs significantly from the actual measured value or the expected value, it indicates that the target battery may be abnormal. For example, according to the equivalent circuit model of the target battery, it is calculated that at a certain charging current, the voltage of the target battery should be within a certain range, but the actually measured voltage exceeds this range, which may mean that there is a fault inside the target battery.

[0040] 3.2 Thermal model method: Considering the heat generation of the target battery during charge and discharge, establish a thermal model to predict the temperature distribution of the target battery. When the difference between the actually measured temperature of the target battery and the temperature predicted by the thermal model exceeds a certain threshold, it indicates that the target battery may have a heat dissipation problem or an abnormal heat generation mechanism inside, thereby determining that the target battery is abnormal. For example, for a lithium target battery pack, the thermal model predicts that the maximum temperature of the target battery pack is 40°C based on factors such as the charge and discharge power of the target battery and the ambient temperature, but the actually measured temperature reaches 45°C, then the algorithm determines that the target battery is abnormal.

[0041] Please refer to Figure 3 , Embodiment 3 of the present invention is: A battery-powered system that applies an inverter for battery protection, including an acquisition board and an inverter 2 for electrically connecting to the target battery; a sampling port and a sending port are provided on the acquisition board, and a receiving port is provided on the inverter control module 4 of the inverter 2. The sampling port is communicatively connected to the target battery 1, and the sending port is communicatively connected to the receiving port; the acquisition board serves as the acquisition end and the inverter control module 4 serves as the inverter control end and executes a method for applying an inverter for battery protection in Embodiment 1 or 2.

[0042] In this embodiment, the inverter itself is equipped with a drive circuit and power switching devices (such as IGBT, MOSFET, etc.) that convert direct current into alternating current by continuously turning on and off. The role of the drive circuit is to control the states of these switching devices. Usually, a control signal input interface is provided in this circuit. When a stop or shutdown control signal is received, the drive circuit no longer outputs drive pulses, thereby causing the power switching devices to stop working, and finally stopping the output of the inverter.

[0043] As Figure 3 shown, the target battery 1 is directly electrically connected to the inverter 2 instead of being electrically connected to the inverter 2 after passing through the battery protection board 3; the battery protection board 3 establishes a communication route with the inverter control module 4; after the battery protection board 3 collects the operation parameter information of the target battery 1 through the sampling port, it transmits the operation parameter information from the sending port to the inverter control module 4.

[0044] In summary, a method for battery protection using an inverter and a battery power supply system provided by the present invention integrate the charge and discharge protection function on the inverter control terminal of the inverter. By utilizing the output control structure already possessed by the inverter and the newly introduced process for judging the abnormal state of the target battery, the inverter can independently decide whether to turn off the output waveform, without the charge and discharge MOS transistors on the battery protection board determining whether to turn off the output waveform, thus replacing this part of the function of the battery protection board and achieving indirect protection of the target battery, thereby reducing switching losses and hardware costs and improving energy conversion efficiency. At the same time, different preset battery abnormality judgment algorithms are integrated on the inverter, and different preset battery abnormality judgment algorithms can be selected according to actual scenario requirements to analyze the state of the target battery, with high flexibility and strong adaptability. The battery protection board without charge and discharge MOS transistors significantly reduces the hardware cost. At the same time, integrating the charge and discharge protection function on the inverter control terminal of the inverter further simplifies the system structure, avoids the setting of duplicate functional modules, makes the overall solution more competitive economically, and reduces costs.

[0045] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent transformations made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are equally included in the patent protection scope of the present invention.

Claims

1. A method for battery protection using an inverter, characterized in that, Applied to a battery-powered system, the battery-powered system includes a collection end, an inverter, and an inverter control end provided on the inverter. The method includes the following steps: S1. The collection end collects the operation parameter information of the target battery in real time and sends the operation parameter information to the inverter control end. S2. The inverter control end determines whether the state of the target battery is abnormal according to the operation parameter information. If so, it stops the output of the inverter for charging the target battery or stops the output of the inverter for discharging the target battery.

2. The method for battery protection using an inverter according to claim 1, wherein After stopping the output of the inverter for charging the target battery or stopping the output of the inverter for discharging the target battery, it further includes: The inverter control end re-obtains new operation parameter information, determines whether the state of the target battery has returned to normal according to the new operation parameter information. If so, after receiving the start instruction sent by the collection end, it resumes the output of the inverter for charging the target battery or resumes the output of the inverter for discharging the target battery. Otherwise, it returns to execute the step of the inverter control end re-obtaining new operation parameter information.

3. A method for battery protection using an inverter according to claim 1, characterized in that, Before S1, it further includes: S0. The inverter control end obtains external configuration data and obtains a preset battery abnormality judgment algorithm from the external configuration data. The inverter control end determines whether the state of the target battery is abnormal according to the operation parameter information specifically as: The inverter control end determines whether the state of the target battery is abnormal according to the operation parameter information and the preset battery abnormality judgment algorithm.

4. A method for protecting a battery using an inverter according to claim 3, wherein There are at least two preset battery abnormality judgment algorithms. Before S2, it further includes: The inverter control end obtains an external adjustment instruction and determines the currently selected preset battery abnormality judgment algorithm according to the external adjustment instruction.

5. A method for battery protection using an inverter according to claim 1, characterized in that, The collection end is a battery protection board that omits the charge and discharge MOS transistors. Before S1, it further includes: The inverter control end is communicatively connected to the battery protection board according to the communication protocol adapted to the battery protection board.

6. A battery-powered system that uses an inverter for battery protection, characterized in that, It includes a collection board and an inverter for electrically connecting to the target battery. The collection board is provided with a sampling port and a sending port. The inverter control module of the inverter is provided with a receiving port. The sampling port is communicatively connected to the target battery, and the sending port is communicatively connected to the receiving port. The collection board serves as the collection end and the inverter control module serves as the inverter control end and executes the following steps: S1. The collection end collects the operation parameter information of the target battery in real time and sends the operation parameter information to the inverter control end. S2. The inverter control end determines whether the state of the target battery is abnormal according to the operation parameter information. If so, it stops the output of the inverter for charging the target battery or stops the output of the inverter for discharging the target battery.

7. A battery-powered system for battery protection using an inverter according to claim 6, characterized in that, After stopping the output of the inverter for charging the target battery or stopping the output of the inverter for discharging the target battery, it further includes: The inverter control terminal re-acquires new operation parameter information, and determines whether the state of the target battery has returned to normal according to the new operation parameter information. If so, after receiving the start instruction sent by the acquisition terminal, the inverter resumes the output of charging the target battery or resumes the output of discharging the target battery by the inverter. Otherwise, it returns to execute the step of the inverter control terminal re-acquiring new operation parameter information.

8. A battery-powered system for battery protection using an inverter according to claim 6, characterized in that, Before the S1, it further includes: S0. The inverter control terminal acquires external configuration data and obtains a preset battery abnormality judgment algorithm from the external configuration data. Specifically, the inverter control terminal determines whether the state of the target battery is abnormal according to the operation parameter information as follows: The inverter control terminal determines whether the state of the target battery is abnormal according to the operation parameter information and the preset battery abnormality judgment algorithm.

9. A battery-powered system for battery protection using an inverter according to claim 8, wherein, There are at least two kinds of the preset battery abnormality judgment algorithms. Before the S2, it further includes: The inverter control terminal acquires an external adjustment instruction and determines the currently selected preset battery abnormality judgment algorithm according to the external adjustment instruction.

10. A battery-powered system for battery protection using an inverter according to claim 6, characterized in that, The acquisition terminal is a battery protection board without charge and discharge MOS transistors. Before the S1, it further includes: The inverter control terminal is communicatively connected to the battery protection board according to the communication protocol adapted to the battery protection board.

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