Battery backup power supply circuit, system and control method

Abstract

The present application discloses a battery backup power supply circuit, system and control method thereof, wherein the battery backup power supply circuit comprises a power conversion module; the power conversion module comprises a converter and an energy storage battery, and is used to superimpose the output voltage of the converter with the voltage of the energy storage battery to form the output voltage of the battery backup power supply circuit; wherein the input stage of the converter is connected in parallel with the energy storage battery, and the output stage of the converter is connected in series with the energy storage battery. The present application can provide a higher power output capacity with a converter of the same power capacity; according to the same overall power requirement, a converter of smaller power or size can be used to achieve it, and the efficiency of the system will also be significantly improved; the charging and discharging capacity of the backup circuit can be used to optimize the dynamic performance of the system, without the need for additional specific charging steps, and the backup battery can be charged slowly by using the energy of voltage overcharge during dynamic operation.

Description

Technical Field

[0001] The present application relates to a battery backup circuit, and more specifically, to a battery backup power supply circuit, system and control method. Background Art

[0002] Battery backup power circuits are widely used in many occasions that require uninterrupted power supply, such as data centers, hospitals, traffic lights, etc., due to their advantages of uninterrupted power supply, voltage stability, and load protection. They mainly include energy storage, converters, switches and other components. When the mains power is normal, the AC power is converted to DC power through a rectifier and then stored in the battery. When the mains power is abnormal or outage, the battery is converted to AC power through an inverter to continue supplying power.

[0003] In traditional battery backup power supplies, the battery is usually used as input, and the converter directly outputs the DC-DC conversion circuit to achieve power conversion. In this approach, the output power of the converter is the same as the output power of the entire system, and the system power utilization rate is not high. Summary of the invention

[0004] In order to solve at least one technical problem in the above-mentioned background technology, the present application proposes a battery backup power supply circuit, system and control method.

[0005] The battery backup power supply circuit of the present application includes a power conversion module; the power conversion module includes a converter and an energy storage battery, which is used to superimpose the output voltage of the converter and the voltage of the energy storage battery to form the output voltage of the battery backup power supply circuit; wherein the input stage of the converter is connected in parallel with the energy storage battery, and the output stage of the converter is connected in series with the energy storage battery.

[0006] Optionally, the energy storage battery includes a plurality of energy storage units connected in parallel; wherein the energy storage unit includes a controllable switch and a battery unit, and the controllable switch and the battery unit are connected one-to-one.

[0007] Optionally, the converter includes a bidirectional converter or a unidirectional converter.

[0008] Optionally, the power conversion module includes: the positive input terminal of the converter is connected to the positive pole of the energy storage battery, and the positive output terminal is connected to the positive input terminal of the electrical equipment; the negative input terminal of the converter is connected to the positive pole of the energy storage battery, and the negative output terminal and the negative pole of the energy storage battery are connected to the negative input terminal of the electrical equipment.

[0009] Optionally, the power conversion module includes: the negative input terminal of the converter is connected to the negative pole of the energy storage battery, and the negative output terminal is connected to the negative input terminal of the electrical equipment; the positive input terminal of the converter is connected to the negative pole of the energy storage battery, and the positive output terminal and the positive pole of the energy storage battery are connected to the positive input terminal of the electrical equipment.

[0010] Optionally, the power conversion module includes: the positive input terminal of the converter is connected to the negative pole of the energy storage battery, the positive output terminal and the positive pole of the energy storage battery are connected to the positive input terminal of the electrical equipment; the negative input terminal and the negative output terminal of the converter are connected to the negative input terminal of the electrical equipment.

[0011] Optionally, the power conversion module includes: the negative input terminal of the converter is connected to the positive pole of the energy storage battery, the negative output terminal and the negative pole of the energy storage battery are connected to the negative input terminal of the electrical equipment; the positive input terminal and the positive output terminal of the converter are connected to the negative input terminal of the electrical equipment.

[0012] Optionally, the converter is an isolated converter or a non-isolated converter.

[0013] Optionally, the isolated converter includes a series resonant converter, a dual active full-bridge converter and a shifted full-bridge converter.

[0014] Optionally, the non-isolated converter includes Buck, Boost, Buck-Boost, Cup and Sepic.

[0015] The present application also provides a battery backup power system including the battery backup power circuit, wherein the system includes a plurality of the battery backup power circuits connected in series or in parallel.

[0016] Optionally, the system further includes multiple control switches, and the battery backup power supply circuit is connected to the electrical equipment in parallel or in series through the control switches; wherein the control switch is used to turn on or off the circuit connection between the corresponding battery backup power supply circuit and the electrical equipment according to the received control instructions.

[0017] The present application also provides a control method applicable to a battery backup power supply system, the control method comprising: obtaining the power demand of an electrical device, calling one or more battery backup power supply circuits according to the power demand to form a battery backup power supply system with corresponding output power through series or parallel connection; and providing a backup power supply with corresponding power demand to the electrical device through the battery backup power supply system.

[0018] The present application also provides a control method suitable for a battery backup power supply system, the control method comprising: obtaining voltage data of a current power-consuming device, comparing the voltage data with a preset charge and discharge threshold value of the power-consuming device voltage to obtain a comparison result; adjusting a charging current reference value according to the comparison result, and adjusting the output voltage of the converter according to the difference between the charging current reference value and the actual charging current of the battery backup power supply system to complete the charging or discharging processing of the battery backup power supply system.

[0019] Optionally, adjusting the output voltage of the converter to complete the charging or discharging processing of the battery backup power system according to the difference between the charging current reference value and the actual charging current of the battery backup power system includes: inputting the difference into a preset integral controller to obtain an adjustment parameter, and adjusting the output voltage of the converter according to the adjustment parameter to complete the charging or discharging processing of the battery backup power system.

[0020] The beneficial effects of the present application are as follows: a converter with the same power capacity can achieve a power output capacity of 3 times or even higher; according to the same overall power requirement, a converter with smaller power or size can be used to achieve it; since the power capacity of the converter is reduced, the loss of the converter will also be reduced accordingly, and the efficiency of the system will also be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0022] Figure 1 is a first schematic diagram of the structure of a power conversion module provided in an embodiment of the present application;

[0023] Figure 2 is a second schematic diagram of the structure of the power conversion module provided in an embodiment of the present application;

[0024] Figure 3 is a third schematic diagram of the structure of the power conversion module provided in an embodiment of the present application;

[0025] Figure 4 is a fourth schematic diagram of the structure of the power conversion module provided in an embodiment of the present application;

[0026] Figure 5A and Figure 5B is a schematic diagram of the connection structure of the isolated converter provided in the embodiment of the present application;

[0027] Fig. 6A and Figure 6B is a schematic diagram of the connection structure of the non-isolated converter provided in an embodiment of the present application;

[0028] Figure 7 This is a schematic diagram of the series structure of the battery backup power supply circuit provided in the embodiment of the present application;

[0029] Figure 8 It is a schematic diagram of the parallel structure of the battery backup power supply circuit provided in the embodiment of the present application;

[0030] Fig. 9 It is a schematic diagram of a battery backup power supply circuit control method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0031] 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.

[0032] With reference to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents.

[0033] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0034] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components.

[0035] The battery backup power supply circuit of the present application includes a power conversion module; the power conversion module includes a converter and an energy storage battery, which is used to superimpose the output voltage of the converter and the voltage of the energy storage battery to form the output voltage of the battery backup power supply circuit; wherein the input stage of the converter is connected in parallel with the energy storage battery, and the output stage of the converter is connected in series with the energy storage battery.

[0036] Specifically, the present application adopts a method of connecting the converter output stage in series with the energy storage battery and the input stage in parallel with the energy storage battery to superimpose the converter output voltage on the battery voltage as the overall voltage output, making full use of the power output capacity of the energy storage battery itself to improve the output power of the entire system, and effectively reducing the requirements and volume of the converter; wherein, the converter may include a bidirectional converter or a unidirectional converter, and the position of the converter and the energy storage battery may also be interchangeable to meet the connection requirements in different scenarios, thereby avoiding the method in which the energy storage battery in the traditional battery backup power supply is only used as an input, and all output power comes only from the output of the converter.

[0037] In actual work, the power conversion module mainly includes energy storage batteries and converters, which can be freely combined in four different connection modes according to actual needs. For details, please refer to the following Figures 1 to 4 As shown:

[0038] Please refer to Figure 1 As shown, in one embodiment of the present application, the power conversion module includes: the positive input terminal of the converter is connected to the positive electrode of the energy storage battery, and the positive output terminal is connected to the positive input terminal of the electrical equipment; the negative input terminal of the converter is connected to the positive electrode of the energy storage battery, and the negative output terminal and the negative electrode of the energy storage battery are connected to the negative input terminal of the electrical equipment.

[0039] Please refer to Figure 2 As shown, in one embodiment of the present application, the power conversion module includes: the negative input terminal of the converter is connected to the negative pole of the energy storage battery, and the negative output terminal is connected to the negative input terminal of the electrical equipment; the positive input terminal of the converter is connected to the negative pole of the energy storage battery, and the positive output terminal and the positive pole of the energy storage battery are connected to the positive input terminal of the electrical equipment.

[0040] In the above structure, the converter is connected in series with the energy storage battery at the output stage and in parallel with the input stage; the difference between the two is that the converter is connected in parallel with the positive and negative sides of the energy storage battery. Relevant technicians in this field can select the corresponding connection method and structure according to actual needs.

[0041] In the above embodiment, the energy storage battery includes a plurality of energy storage units connected in parallel; wherein, the energy storage unit includes a controllable switch and a battery unit, and the controllable switch and the battery unit are connected one-to-one. In this structure, the energy storage battery serves as a power output structure with adjustable output power, which can be a battery integration. In its actual application, different numbers or different powers of battery units can be adjusted in parallel according to the user needs of the electrical equipment to achieve adjustable power of the energy storage battery. The staff can set multiple battery units of different powers or the same power in parallel according to actual needs, and this application does not impose any further restrictions on it.

[0042] Please refer to Figure 3 As shown, in one embodiment of the present application, the power conversion module includes: the positive input terminal of the converter is connected to the negative pole of the energy storage battery, the positive output terminal and the positive pole of the energy storage battery are connected to the positive input terminal of the electrical equipment; the negative input terminal and the negative output terminal of the converter are connected to the negative input terminal of the electrical equipment.

[0043] Please refer to Figure 4 As shown, in one embodiment of the present application, the power conversion module includes: the negative input terminal of the converter is connected to the positive pole of the energy storage battery, the negative output terminal and the negative pole of the energy storage battery are connected to the negative input terminal of the electrical equipment; the positive input terminal and the positive output terminal of the converter are connected to the negative input terminal of the electrical equipment.

[0044] In the above structure, the converter is connected in series with the energy storage battery at the output stage and in parallel at the input stage; the difference between the two is that the energy storage battery is connected in parallel with the positive output stage and the positive input stage of the converter or the negative output stage and the negative input stage of the converter. Relevant technicians in this field can select the corresponding connection method and structure according to actual needs.

[0045] comprehensive Figures 1 to 4 It can be seen that there are no other restrictions on the connection between the converter and the energy storage battery in this application. As long as the input stage of the converter is connected in parallel with the energy storage battery, and the output stage of the converter is connected in series with the energy storage battery, the combined connection method of the two is mainly set by the staff according to actual needs. Relevant technicians in this field can choose one of the above four methods based on actual needs, and this application does not impose any restrictions on it.

[0046] In one embodiment of the present application, the converter is an isolated converter or a non-isolated converter. The isolated converter includes a series resonant converter, a dual active full-bridge converter and a shifted full-bridge converter; the non-isolated converter includes Buck, Boost, Buck-Boost, Cup and Sepic.

[0047] Please refer to Figure 5A and Figure 5B As shown, for the connection structure of the isolated converter, its principle is the same as the above Figure 1 and Figure 2 The connection structure is similar to that of the converter, and is only used to determine the positions of the input stage and the output stage in the isolation converter, and then connected to the energy storage power supply to form the input stage of the converter connected in parallel with the energy storage battery, and the output stage of the converter connected in series with the energy storage battery.

[0048] For the same reason, please refer to Fig. 6A and Figure 6BAs shown, for the connection structure of the non-isolated converter, its principle can be referred to Figure 3 and Figure 4 The connection logic of the non-isolated converter can be replaced according to actual needs, and the present application does not impose any further restrictions on it.

[0049] The present application also provides a battery backup power system including the battery backup power circuit, wherein the system includes a plurality of the battery backup power circuits connected in series or in parallel. Figure 7 or Figure 8 As shown, in this structure, a plurality of the battery backup power circuits can be used to form a larger power, that is, the current or voltage of the battery backup power system can be changed to adapt to different electrical equipment or system inputs; specifically, by Figure 7 As can be seen from the structure, connecting multiple battery backup power supply circuits in series can effectively increase the current of the overall battery backup power supply system, thereby achieving the purpose of changing the output power by current superposition; similarly, please refer to Figure 8 As shown, connecting a plurality of the battery backup power supply circuits in parallel can effectively increase the voltage of the overall battery backup power supply system, thereby achieving the purpose of changing the output power by voltage superposition.

[0050] In the above embodiment, the system may also include multiple control switches, and the battery backup power supply circuit is connected to the electrical equipment in parallel or in series through the control switches; wherein the control switch is used to turn on or off the circuit connection between the corresponding battery backup power supply circuit and the electrical equipment according to the received control instructions.

[0051] Specifically, in actual work, multiple different control switches can be used to control the connection and disconnection of different battery backup power circuits, so as to adjust the overall output power of the battery backup power system, and then change the output power of the overall system; the advantage of this method is that by configuring the control switch, the same battery backup power system can be adapted to different power-consuming devices, thereby effectively improving the applicable scenarios of the battery backup power system. Among them, the control instructions of the control switch can be obtained by analyzing the existing load equipment, and its principle can refer to the existing power load balancing technology, and this application does not make further limitations here.

[0052] The present application also provides a control method applicable to a battery backup power supply system, the control method comprising: obtaining the power demand of an electrical device, calling one or more battery backup power supply circuits according to the power demand to form a battery backup power supply system with corresponding output power through series or parallel connection; and providing a backup power supply with corresponding power demand to the electrical device through the battery backup power supply system.

[0053] The present application also provides a control method suitable for a battery backup power supply system, the control method comprising: obtaining voltage data of a current power-consuming device, comparing the voltage data with a preset charge and discharge threshold value of the power-consuming device voltage to obtain a comparison result; adjusting a charging current reference value according to the comparison result, and adjusting the output voltage of the converter according to the difference between the charging current reference value and the actual charging current of the battery backup power supply system to complete the charging or discharging processing of the battery backup power supply system.

[0054] Among them, according to the difference between the charging current reference value and the actual charging current of the battery backup power system, adjusting the output voltage of the converter to complete the charging or discharging processing of the battery backup power system includes: inputting the difference into a preset integral controller to obtain an adjustment parameter, and adjusting the output voltage of the converter according to the adjustment parameter to complete the charging or discharging processing of the battery backup power system.

[0055] For details, please refer to Fig. 9 As shown, in the above embodiments of the present application, the control method provided by the present application includes the following two control modes:

[0056] 1. Automatic control: Its control goal is to stabilize the voltage of the electrical equipment, set the charge and discharge threshold Vth (Vo_high, Vo_Low, and configure a certain hysteresis) of the voltage of the electrical equipment. When the voltage of the electrical equipment is higher than Vo_high, increase the charging current reference value Iref, collect the actual charging current Ifb, input the difference into the proportional integral controller PI_Ctrl, and adjust the DC / DC conversion output voltage to complete charging; when the voltage of the electrical equipment is lower than Vo_low, increase the discharge current reference value Iref, collect the actual charging current Ifb, input the difference into the proportional integral controller PI_Ctrl, and adjust the DC / DC conversion output voltage to complete discharging. This optimizes the dynamic performance of the system and saves energy.

[0057] Second, backup control, set a lower Vo_Low, or start discharge through analog signals or communication instructions, and the battery outputs energy.

[0058] The two control modes can be implemented using existing adaptive charging and discharging technologies, which will not be described one by one here.

[0059] In actual work, since the output power of the battery backup power system provided by the present application comes from the superposition of the output power of the energy storage battery and the converter, relevant technical personnel in this field can select different energy storage batteries and converters according to actual needs to adapt to actual needs. For example: For example, a battery backup power supply requires: output voltage 10V, power 100W, current 10A. A battery with a voltage of 7.2V and a converter with an input of 7.2V and an output of 2.8V can be selected. In the traditional solution, the system output power = converter output power = 10A*2.8V=28W, while the output of the converter is connected in series with the battery using the present application, and the system output power = (2.8V+7.2V)*10A=100W. It can be clearly seen from the comparison between the two that the requirements of the present application for the converter will be lower, and the converter with the same power capacity can achieve 3 times or even higher power output capacity; according to the same overall power requirements, a converter with smaller power or size can be used to achieve it; due to the reduction in the power capacity of the converter, the loss of the converter will also be reduced accordingly, and the efficiency of this system will also be significantly improved.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. The orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In the description of this specification, the description of reference terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of this specification. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0062] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A battery backup power supply circuit, characterized in that: Including a power conversion module; The power conversion module comprises a converter and an energy storage battery, and is used to superimpose the output voltage of the converter and the voltage of the energy storage battery to form the output voltage of the battery backup power supply circuit; The input stage of the converter is connected in parallel with the energy storage battery, and the output stage of the converter is connected in series with the energy storage battery.

2. The battery backup power supply circuit according to claim 1, characterized in that: The power conversion module comprises: The positive input terminal of the converter is connected to the positive electrode of the energy storage battery, and the positive output terminal is connected to the positive input terminal of the electrical equipment; The negative input terminal of the converter is connected to the positive electrode of the energy storage battery, and the negative output terminal and the negative electrode of the energy storage battery are connected to the negative input terminal of the electrical equipment.

3. The battery backup power supply circuit according to claim 1, characterized in that: The power conversion module comprises: The negative input terminal of the converter is connected to the negative electrode of the energy storage battery, and the negative output terminal is connected to the negative input terminal of the electrical equipment; The positive input terminal of the converter is connected to the negative electrode of the energy storage battery, and the positive output terminal and the positive electrode of the energy storage battery are connected to the positive input terminal of the electrical equipment.

4. The battery backup power supply circuit according to claim 1, characterized in that: The power conversion module comprises: The positive input terminal of the converter is connected to the negative electrode of the energy storage battery, and the positive output terminal and the positive electrode of the energy storage battery are connected to the positive input terminal of the electrical equipment; The negative input terminal and the negative output terminal of the converter are connected to the negative input terminal of the electric device.

5. The battery backup power supply circuit according to claim 1, characterized in that: The power conversion module comprises: The negative input terminal of the converter is connected to the positive electrode of the energy storage battery, and the negative output terminal and the negative electrode of the energy storage battery are connected to the negative input terminal of the electrical equipment; The positive input terminal and the positive output terminal of the converter are connected to the negative input terminal of the electrical equipment.

6. The battery backup power supply circuit according to claim 1, characterized in that: The converter is a bidirectional converter or a unidirectional converter.

7. The battery backup power supply circuit according to any one of claims 1 to 6, characterized in that: The converter is an isolated converter or a non-isolated converter.

8. The battery backup power supply circuit according to claim 7, characterized in that: The isolated converter includes a series resonant converter, a dual active full-bridge converter and a shifted full-bridge converter.

9. The battery backup power supply circuit according to claim 7, characterized in that: The non-isolated converters include Buck, Boost, Buck-Boost, Cup and Sepic.

10. The battery backup power supply circuit according to claim 7, characterized in that: The energy storage battery comprises a plurality of energy storage units connected in parallel; Wherein, the energy storage unit includes a controllable switch and a battery unit, and the controllable switch and the battery unit are connected one to one.

11. A battery backup power system comprising the battery backup power circuit according to any one of claims 1 to 10, characterized in that: The system includes a plurality of battery backup power supply circuits connected in series or in parallel.

12. The battery backup power system of the battery backup power circuit according to claim 11, characterized in that: The system further comprises a plurality of control switches, through which the battery backup power circuit is connected in parallel or in series to the power-consuming device; The control switch is used to open or close the circuit connection between the battery backup power supply circuit and the electrical device according to the received control instruction.

13. A control method applicable to the battery backup power system according to claim 11 or 12, characterized in that: The control method comprises: Obtaining the power demand of the power-consuming device, and calling one or more battery backup power supply circuits according to the power demand to form a battery backup power supply system with corresponding output power through series or parallel connection; The battery backup power system provides backup power corresponding to the power demand to the power-consuming equipment.

14. A control method applicable to the battery backup power system according to claim 11 or 12, characterized in that: The control method comprises: Acquire voltage data of the current electric device, and compare the voltage data with a preset charge and discharge threshold value of the voltage of the electric device to obtain a comparison result; The charging current reference value is adjusted according to the comparison result, and the output voltage of the converter is adjusted according to the difference between the charging current reference value and the actual charging current of the battery backup power system to complete the charging or discharging process of the battery backup power system.

15. The control method according to claim 14, characterized in that: The step of adjusting the output voltage of the converter to complete the charging or discharging process of the battery backup power system according to the difference between the charging current reference value and the actual charging current of the battery backup power system comprises: The difference is input into a preset integral controller to obtain an adjustment parameter, and the output voltage of the converter is adjusted according to the adjustment parameter to complete the charging or discharging process of the battery backup power supply system.

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