CN109245283B - Standby battery monitoring system and uninterrupted power supply intelligent switching and monitoring system - Google Patents

Abstract

The invention discloses a standby battery monitoring system and an uninterruptible power supply intelligent switching and monitoring system, wherein the standby battery monitoring system comprises: the state information acquisition module is used for acquiring the working state information of the UPS module; the mode selection module is used for determining whether the UPS module enters a mains supply mode or a battery power supply mode according to the working state information; the full power state judging module is used for recording the uninterrupted power supply duration of the mains supply and judging whether the battery module is in a full power state when entering the mains supply mode; the normal state judging module is used for acquiring the battery state parameters of the battery module when the battery is in a full-power state and judging whether the battery module is in a normal state according to the battery state parameters; and the abnormal processing module is used for disconnecting the battery module from the UPS module and generating battery abnormality warning information when the battery module is in an abnormal state. The invention improves the power supply stability, the safety performance of the battery module and the abnormal processing rate.

Description

Backup battery monitoring system and uninterrupted power supply intelligent switching and monitoring system

Technical field

The present invention relates to the technical field of power supply systems, and in particular to a backup battery monitoring system and an uninterrupted power supply intelligent switching and monitoring system.

Background technique

In the energy storage system, the battery management system BMS plays a vital role. It can protect the battery stack to operate within an appropriate range and prevent the battery stack from overcharging and over-discharging.

During the use of the energy storage system, the mains power may be disconnected. At this time, the battery management system BMS and its components need to continue to be powered, causing the battery management system BMS and its components to continue to work.

In order to provide a stable power supply for the battery management system BMS and its components, in the existing energy storage system, lead-acid batteries are used to power the battery management system BMS and its components when the mains power is disconnected. However, lead-acid batteries have low energy density, so UPS modules take up a lot of space. Furthermore, lead-acid batteries require maintenance at least every six months and have a short service life. Therefore, when the mains power is disconnected, the lead-acid battery may have malfunctioned and cannot supply power to the battery management system BMS and its components. There is still the problem of unstable power supply. Furthermore, staff cannot immediately know the abnormal conditions of lead-acid batteries.

Contents of the invention

The purpose of the present invention is to provide a backup battery monitoring system and an uninterrupted power supply intelligent switching and monitoring system to solve the technical problems of the existing uninterruptible power supply module occupying large space, high maintenance frequency, high maintenance cost and low power supply stability. .

In order to solve the above problems, the present invention provides a backup battery monitoring system, which includes:

Status information acquisition module, used to obtain the working status information of the UPS module;

The mode selection module is used to determine whether the UPS module enters the mains power supply mode or the battery power supply mode based on the working status information;

The full power status judgment module is used to record the uninterrupted power supply time of the mains power when the UPS module enters the mains power supply mode, and determine whether the battery module is fully charged;

The normal state judgment module is used to obtain the battery status parameters of the battery module when the battery module is fully charged, and determine whether the battery module is in a normal state based on the battery status parameters;

Abnormal processing module is used to disconnect the battery module from the UPS module when the battery module is in an abnormal state, and generate battery abnormality warning information. The battery abnormality warning information is transmitted to the battery management system, and the battery management system outputs the battery Exception warning message.

As a further improvement of the present invention, it also includes:

The power supply duration judgment module is used to determine whether the uninterrupted power supply duration of the mains power exceeds the preset power supply duration threshold when the battery module is in a normal state;

The mode switching module is used to control the UPS module to switch from the mains power supply mode to the battery power supply mode when the uninterrupted mains power supply duration exceeds the preset power supply duration threshold;

The discharge maintenance module is used to control the battery module to execute the preset discharge maintenance strategy in battery power mode.

As a further improvement of the present invention, the discharge maintenance module includes:

An automatic maintenance instruction generation unit is used to generate automatic maintenance instructions;

The first battery power supply unit is used to send automatic maintenance instructions to the battery module, and the battery module supplies power to the load;

The first SOC value acquisition unit is used to acquire the SOC value of the battery module;

The first battery power supply control unit is used to control the battery module to stop supplying power to the load when the SOC value is lower than or equal to the preset SOC threshold, and to control the UPS module to convert from the battery power supply mode to the mains power supply mode.

As a further improvement of the present invention, the discharge maintenance module includes:

A manual maintenance instruction generation unit is used to receive maintenance required information input by the user and generate manual maintenance instructions based on the maintenance required information, where the maintenance required information includes a custom SOC threshold;

The second battery power supply unit is used to send manual maintenance instructions to the battery module, and the battery module supplies power to the load;

The second SOC value acquisition unit is used to obtain the SOC value of the battery module;

The second battery power supply control unit controls the battery module to stop supplying power to the load when the SOC value is lower than or equal to the custom SOC threshold, and controls the UPS module to convert from the battery power supply mode to the mains power supply mode.

As a further improvement of the present invention, it also includes:

The charging module is used to charge the battery module when the battery module is not fully charged.

As a further improvement of the present invention, it also includes:

The charging parameter acquisition module is used to obtain the charging battery parameters of the battery module;

The charging protection judgment module is used to judge whether the rechargeable battery parameters meet the preset charging protection conditions;

The charging protection processing module is used to disconnect the battery module and the UPS module when the rechargeable battery parameters meet the preset charging protection conditions, and generate charging warning information. The charging warning information is transmitted to the battery management system, and the battery management system Output charging warning information.

As a further improvement of the present invention, it also includes:

The battery power switching module is used to control the battery module to supply power to the load when the UPS module enters the battery power mode.

As a further improvement of the present invention, it also includes:

The discharge parameter acquisition module is used to obtain the discharge battery parameters of the battery module;

The discharge protection judgment module is used to judge whether the discharge battery parameters meet the preset discharge protection conditions;

The discharge protection processing module is used to disconnect the battery module and the UPS module when the discharged battery parameters meet the preset discharge protection conditions, and generate discharge warning information. The discharge warning information is transmitted to the battery management system, and the battery management system Outputs discharge warning information.

As a further improvement of the present invention, it also includes:

SOC value acquisition module, used to obtain the SOC value of the battery module;

The SOC value judgment module is used to judge whether the SOC value reaches the preset discharge threshold;

The battery power supply stop module is used to control the battery module to stop supplying power to the load when the SOC value is lower than or equal to the preset discharge threshold.

In order to solve the above problems, the present invention also provides an uninterrupted power supply intelligent switching and monitoring system, which includes:

The above-mentioned backup battery monitoring system;

a battery management system connected to a backup battery monitoring system;

a battery management unit connected to the backup battery monitoring system;

The battery module is connected to the battery management unit;

A shunt, one end of which is connected to the battery module, and the other end is connected to the backup battery monitoring system;

The UPS module includes an AC input terminal, an AC output terminal, a DC terminal and a status detection terminal. The AC input terminal is connected to the mains, the AC output terminal is connected to the load, and the status detection terminal is connected to the backup battery monitoring system;

Miniature circuit breaker, one end of which is connected to the DC terminal, and the other end is connected to the shunt and backup battery monitoring system respectively;

Shunt trip, one end of which is connected to the miniature circuit breaker, and the other end is connected to the backup battery monitoring system;

An auxiliary contact, one end of which is connected to the miniature circuit breaker and the other end to the backup battery monitoring system.

Compared with the prior art, the present invention uses battery modules to replace lead-acid batteries, thereby reducing the occupied space. Furthermore, when the mains power is supplied and the battery is fully charged, the present invention automatically obtains battery status parameters and uses the battery status parameters according to the battery status parameters. Analyze whether the battery module is in a normal state. Therefore, it is determined that the battery module is in a normal state, which avoids the situation that the battery module cannot supply power to the battery management system and its components after the mains power is disconnected, thus improving the stability of the power supply. . In addition, when an abnormality in the battery module is detected, the connection between the battery module and the UPS module is immediately disconnected, thereby protecting the battery module, improving the safety performance of the battery module, and sending a battery abnormality warning message to the outside for the convenience of staff. Quickly learning battery module abnormality information not only improves the abnormality processing speed, but also improves the user experience.

Description of the drawings

Figure 1 is a schematic diagram of the frame structure of an embodiment of the uninterrupted power supply intelligent switching and monitoring system of the present invention;

Figure 2 is a functional module schematic diagram of the first embodiment of the backup battery monitoring system of the present invention;

Figure 3 is a functional module schematic diagram of the second embodiment of the backup battery monitoring system of the present invention;

Figure 4 is a functional module schematic diagram of the first embodiment of the discharge maintenance module in the backup battery monitoring system of the present invention;

Figure 5 is a functional module schematic diagram of the second embodiment of the discharge maintenance module in the backup battery monitoring system of the present invention;

Figure 6 is a functional module schematic diagram of the third embodiment of the backup battery monitoring system of the present invention;

Figure 7 is a functional module schematic diagram of the fourth embodiment of the backup battery monitoring system of the present invention;

Figure 8 is a schematic diagram of the functional modules of the fifth embodiment of the backup battery monitoring system of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Similar component numbers in the drawings represent similar components. Obviously, the embodiments to be described below are only some of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

Figure 1 shows an embodiment of the uninterrupted power supply intelligent switching and monitoring system of the present invention. In this embodiment, as shown in Figure 1, the uninterruptible power supply intelligent switching and monitoring system includes a UPS (uninterruptible power supply) module 1, a backup battery monitoring system 2 (PMU), a battery management system 3 (BMS), a battery module Group 4, battery management unit 5 (BMU), shunt 6, miniature circuit breaker 7 (QF), shunt trip 8 and auxiliary contact 9.

Among them, the AC input end of the UPS module 1 is connected to the mains, the AC output end of the UPS module 1 is connected to the load, the DC end of the UPS module 1 is connected to the miniature circuit breaker 7, and the status detection end of the UPS module 1 is connected to the backup battery monitoring system 2 connect.

Further, one end of the auxiliary contact 9 is connected to the backup battery monitoring system 2 , and the other end of the auxiliary contact 9 is connected to the miniature circuit breaker 7 .

Further, one end of the shunt trip 8 is connected to the backup battery monitoring system 2 , and the other end of the shunt trip 8 is connected to the miniature circuit breaker 7 .

Further, one end of the shunt 6 is connected to the backup battery monitoring system 2, and the other end of the shunt 6 is connected to the battery module 4 and the miniature circuit breaker 7 respectively.

Further, one end of the battery management unit 5 is connected to the battery module 4 , and the other end of the battery management unit 5 is connected to the backup battery monitoring system 2 .

Further, the battery management system 3 is connected to the backup battery monitoring system 2 .

So far, the hardware structure of the uninterrupted power supply intelligent switching and monitoring system according to the embodiment of the present invention has been introduced in detail. In the following, various embodiments of the present invention will be proposed based on the above-mentioned uninterrupted power supply intelligent switching and monitoring system.

Figures 2-8 illustrate an embodiment of the backup battery monitoring system of the present invention. In this embodiment, referring to FIG. 2 , the backup battery monitoring system 2 includes a status information acquisition module 20 , a mode selection module 21 , a full power status judgment module 22 , a normal status judgment module 23 and an abnormal processing module 24 .

Among them, the status information obtaining module 20 is used to obtain the working status information of the UPS module.

The mode selection module 21 is used to determine whether the UPS module enters the mains power supply mode or the battery power supply mode according to the working status information. In this embodiment, it can be determined based on the working status information whether the energy storage system is disconnected from the mains power supply. When the energy storage system is connected to the mains power supply, it is determined that the UPS module enters the mains power supply mode. When the energy storage system is disconnected from the mains, make sure the UPS module enters the battery power supply mode.

The full power status determination module 22 is used to record the uninterrupted power supply time of the mains power when the UPS module enters the mains power supply mode, and determine whether the battery module is in a fully charged status.

The normal status determination module 23 is used to obtain the battery status parameters of the battery module when the battery module is in a fully charged status, and determine whether the battery module is in a normal status based on the battery status parameters. In this embodiment, the battery management unit obtains the battery status parameters of the battery module in real time. The battery status parameters include voltage information, current information, temperature information, etc. Among them, you can know whether the battery module is over-voltage or under-voltage based on the voltage information, know whether the battery module is over-current based on the current information, and even know whether the temperature in the battery module is too high or where the battery module is located based on the temperature information. Is the ambient temperature too low?

Abnormal processing module 24 is used to disconnect the battery module from the UPS module when the battery module is in an abnormal state, and generate battery abnormality warning information. The battery abnormality warning information is transmitted to the battery management system, and the battery management system outputs Battery abnormality warning message. In this embodiment, the connection between the battery module and the UPS module is disconnected through a micro circuit breaker to avoid abnormality of the battery module and continue the charging operation to protect the battery module. In addition, when an abnormality in the battery module is detected, a battery abnormality warning message is sent to the battery management system, which improves the safety of the battery module.

This embodiment uses a battery module to replace the lead-acid battery, thereby reducing the occupied space. Furthermore, when the mains power is supplied and the battery is fully charged, the present invention automatically obtains the battery status parameters and analyzes whether the battery module is in a state based on the battery status parameters. Normal state, therefore, it is determined that the battery module is in a normal state, which avoids the situation that the battery module cannot supply power to the battery management system and its components after the mains power is disconnected, thus improving the stability of the power supply. In addition, when an abnormality in the battery module is detected, the connection between the battery module and the UPS module is immediately disconnected, thereby protecting the battery module, improving the safety performance of the battery module, and sending a battery abnormality warning message to the outside for the convenience of staff. Quickly learning battery module abnormality information not only improves the abnormality processing speed, but also improves the user experience.

Based on the above embodiments, in other embodiments, referring to FIG. 3 , the backup battery monitoring system 2 further includes a power supply duration determination module 30 , a mode switching module 31 and a discharge maintenance module 32 .

Among them, the power supply duration determination module 30 is used to determine whether the uninterrupted power supply duration of the mains power exceeds a preset power supply duration threshold when the battery module is in a normal state; in this embodiment, the preset power supply duration threshold can be a system fixed power supply duration threshold. It can also be set by the user. For example: the preset power supply duration threshold can be set to 1080h.

The mode switching module 31 is used to control the UPS module to switch from the mains power supply mode to the battery power supply mode when the uninterrupted power supply time of the mains power exceeds the preset power supply time threshold; the discharge maintenance module 32 is used to control the battery module to switch to battery power supply mode. Execute the preset discharge maintenance strategy in mode.

In this embodiment, when the battery module is fully charged and in a normal state for a period of time, a discharging operation is required, and after discharging, a charging operation is performed to ensure that the battery module is charged and discharged normally, extending the time The service life of the battery module.

In this embodiment, there are many ways to maintain the battery module. In order to explain the technical solution of the present invention in more detail, this case will be described by taking two modes, automatic maintenance and manual maintenance, as examples.

1. Automatic maintenance mode

Based on the above embodiments, in other embodiments, referring to Figure 4, the discharge maintenance module 32 includes an automatic maintenance instruction generation unit 3200, a first battery power supply unit 3201, a first SOC value acquisition unit 3202 and a first battery power supply control unit. 3203.

Among them, the automatic maintenance instruction generation unit 3200 is used to generate automatic maintenance instructions; the first battery power supply unit 3201 is used to send automatic maintenance instructions to the battery module, and the battery module supplies power to the load; the first SOC value acquisition unit 3202 is used to In order to obtain the SOC value of the battery module; the first battery power supply control unit 3203 is used to control the battery module to stop supplying power to the load when the SOC value is lower than or equal to the preset SOC threshold, and control the UPS module to switch from the battery power supply mode Mains power supply mode.

In this embodiment, when the battery module is fully charged and in a normal state for a period of time, the battery module is automatically controlled to perform a discharge operation, thereby improving the automatic maintenance performance of the battery module. In addition, the preset SOC threshold in this embodiment can be 25, that is, when the remaining power of the battery module is 25%, the discharge operation is stopped to avoid that the battery module cannot be charged immediately after the current mains power is disconnected. It cannot meet the black start requirements of the UPS module.

2. Manual maintenance mode

On the basis of this embodiment, in other embodiments, referring to FIG. 5 , the discharge maintenance module 32 includes a manual maintenance instruction generation unit 3210, a second battery power supply unit 3211, a second SOC value acquisition unit 3212, and a second battery power supply control unit. 3213.

Among them, the manual maintenance instruction generation unit 3210 is used to receive the maintenance required information input by the user, and generate a manual maintenance instruction according to the maintenance required information, wherein the maintenance required information includes a custom SOC threshold; in this embodiment, the upper level The upper computer receives the maintenance required information input by the user, and the upper computer transmits the maintenance required information to the backup battery monitoring system, and the backup battery monitoring system generates manual maintenance instructions based on the maintenance required information.

The second battery power supply unit 3211 is used to send manual maintenance instructions to the battery module, and the battery module supplies power to the load; the second SOC value acquisition unit 3212 is used to obtain the SOC value of the battery module; the second battery power supply control unit 3213 , when the SOC value is lower than or equal to the custom SOC threshold, the battery module is controlled to stop supplying power to the load, and the UPS module is controlled to convert from battery power supply mode to mains power supply mode.

In this embodiment, a custom SOC threshold is set according to user needs to perform the discharge operation, thereby improving the user experience. In addition, the preset SOC threshold in this embodiment can be 25, that is, when the remaining power of the battery module is 25%, the discharge operation is stopped to avoid that the battery module cannot be charged immediately after the current mains power is disconnected. It cannot meet the black start requirements of the UPS module.

On the basis of this embodiment, in other embodiments, referring to FIG. 6 , the backup battery monitoring system 2 further includes a charging module 40 . Among them, the charging module 40 is used to charge the battery module when the battery module is not fully charged.

In this embodiment, when the battery module is not fully charged, the battery module is automatically charged, thereby improving the automatic charging performance.

On the basis of this embodiment, in other embodiments, referring to FIG. 6 , the backup battery monitoring system 2 further includes a charging parameter acquisition module 50 , a charging protection judgment module 51 and a charging protection processing module 52 .

Among them, the charging parameter acquisition module 50 is used to acquire the rechargeable battery parameters of the battery module; in this embodiment, the rechargeable battery parameters include charging voltage, charging current and other parameter information.

The charging protection judgment module 51 is used to judge whether the rechargeable battery parameters meet the preset charging protection conditions; in this embodiment, the preset charging protection conditions can be that when the charging voltage exceeds the charging voltage threshold, the rechargeable battery parameters meet the preset charging conditions. protection conditions. Furthermore, the preset charging protection condition may also be that when the charging current exceeds the charging current threshold, the rechargeable battery parameters satisfy the preset charging protection condition.

The charging protection processing module 52 is used to disconnect the battery module and the UPS module when the rechargeable battery parameters meet the preset charging protection conditions, and generate charging warning information. The charging warning information is transmitted to the battery management system, and the battery management system The system outputs charging warning information.

This embodiment automatically monitors the rechargeable battery parameters during the charging process of the battery module, and performs intelligent control based on the rechargeable battery parameters. When an abnormality occurs during the charging process, the connection between the battery module and the UPS module is immediately disconnected to further achieve the goal. The effect of protecting the battery module. In addition, when the charging process is abnormal, the charging warning information is immediately output to the outside, allowing staff to quickly learn the abnormal charging information of the battery module, which not only improves the charging abnormal processing speed, but also improves the user experience.

On the basis of this embodiment, in other embodiments, referring to FIG. 7 , the backup battery monitoring system 2 further includes a battery power supply switching module 60 . Among them, the battery power supply switching module 60 is used to control the battery module to supply power to the load when the UPS module enters the battery power supply mode.

In this embodiment, when it is detected that the mains power supply has stopped, the battery module is immediately controlled to supply power to the load, thereby improving power supply stability.

On the basis of this embodiment, in other embodiments, referring to FIG. 7 , the backup battery monitoring system 2 further includes a discharge parameter acquisition module 70 , a discharge protection judgment module 71 and a discharge protection processing module 72 .

Among them, the discharge parameter acquisition module 70 is used to acquire the discharge battery parameters of the battery module; in this embodiment, the discharge battery parameters include parameter information such as discharge voltage and discharge current.

The discharge protection judgment module 71 is used to judge whether the discharge battery parameters meet the preset discharge protection conditions; in this embodiment, the preset discharge protection conditions can be that when the discharge voltage exceeds the discharge voltage threshold, the discharge battery parameters meet the preset discharge conditions. protection conditions. Furthermore, the preset discharge protection condition may also be that when the discharge current exceeds the discharge current threshold, the discharge battery parameters satisfy the preset discharge protection condition.

The discharge protection processing module 72 is used to disconnect the battery module and the UPS module when the discharged battery parameters meet the preset discharge protection conditions, and generate discharge warning information. The discharge warning information is transmitted to the battery management system, and the battery management system The system outputs discharge warning information.

This embodiment automatically monitors the discharge battery parameters during the discharge process of the battery module, and performs intelligent control based on the discharge battery parameters. When an abnormality occurs in the discharge process, the connection between the battery module and the UPS module is immediately disconnected to further achieve the goal. The effect of protecting the battery module. In addition, when the discharge process is abnormal, the discharge warning information is immediately output to the outside, allowing staff to quickly learn the abnormal discharge information of the battery module, which not only improves the processing speed of discharge abnormality, but also improves the user experience.

On the basis of this embodiment, in other embodiments, referring to FIG. 8 , the backup battery monitoring system 2 also includes an SOC value acquisition module 80 , an SOC value judgment module 81 and a battery power supply stop module 82 .

Among them, the SOC value acquisition module 80 is used to obtain the SOC value of the battery module; the SOC value determination module 81 is used to determine whether the SOC value reaches the preset discharge threshold.

It should be noted that the preset discharge threshold in this embodiment may be fixed in the system or user-defined.

The battery power supply stop module 82 is used to control the battery module to stop supplying power to the load when the SOC value is lower than or equal to the preset discharge threshold.

The preset discharge threshold in this embodiment can be 25, that is, when the remaining power of the battery module is 25%, the battery module stops supplying power to the load to prevent the current mains power from being disconnected from the UPS module and the battery module cannot be used immediately. Charging, so that it cannot meet the black start requirements of the UPS module.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above functional units and modules is used as an example. In actual applications, the above functions can be allocated to different functional units and modules according to needs. The module is completed, that is, the internal structure of the backup battery monitoring system is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be hardware-based. It can also be implemented in the form of software functional units. In addition, the specific names of each functional unit and module are only for the convenience of distinguishing each other and are not used to limit the scope of protection of the present application.

The specific implementations of the invention have been described in detail above, but they are only used as examples, and the present invention is not limited to the specific implementations described above. For those skilled in the art, any equivalent modifications or substitutions made to the invention are also within the scope of the invention. Therefore, equivalent transformations, modifications and improvements can be made without departing from the spirit and principles of the invention. etc., should all be included in the scope of the present invention.

Claims (9)

1. A battery backup monitoring system, comprising:

the state information acquisition module is used for acquiring the working state information of the UPS module;

the mode selection module is used for determining whether the UPS module enters a mains supply mode or a battery power supply mode according to the working state information acquired by the state information acquisition module;

the full power state judging module is used for recording the uninterruptible power supply duration of the mains supply and judging whether the battery module is in a full power state when the mode selection module determines that the UPS module enters a mains supply mode;

the normal state judging module is used for acquiring battery state parameters of the battery module when the full state judging module judges that the battery module is in a full state, and judging whether the battery module is in a normal state according to the battery state parameters;

the abnormal processing module is used for disconnecting the battery module from the UPS module and generating battery abnormality warning information when the normal state judging module judges that the battery module is in an abnormal state, the battery abnormality warning information is transmitted to a battery management system, and the battery management system outputs the battery abnormality warning information;

the power supply duration judging module is used for judging whether the uninterruptible power supply duration of the commercial power exceeds a preset power supply duration threshold value when the battery module is in a normal state;

the mode switching module is used for controlling the UPS module to be converted from the mains supply mode to the battery power supply mode when the uninterruptible power supply time length of the mains supply exceeds a preset power supply time length threshold value;

the discharging maintenance module is used for controlling the battery module to execute a preset discharging maintenance strategy in the battery power supply mode;

the preset discharge maintenance strategy comprises the steps of generating an automatic maintenance instruction and generating a manual maintenance instruction.

2. The backup battery monitoring system of claim 1, wherein the preset discharge maintenance strategy comprises:

an automatic maintenance instruction generation unit for generating an automatic maintenance instruction;

the first battery power supply unit is used for sending the automatic maintenance instruction to the battery module, and the battery module supplies power to a load;

a first SOC value acquisition unit, configured to acquire an SOC value of the battery module;

and the first battery power supply control unit is used for controlling the battery module to stop supplying power to the load and controlling the UPS module to be converted from the battery power supply mode to the mains power supply mode when the SOC value is lower than or equal to a preset SOC threshold value.

3. The backup battery monitoring system of claim 1, wherein the preset discharge maintenance strategy further comprises:

the manual maintenance instruction generation unit is used for receiving maintenance required information input by a user and generating a manual maintenance instruction according to the maintenance required information, wherein the maintenance required information comprises a self-defined SOC threshold value;

the second battery power supply unit is used for sending the manual maintenance instruction to the battery module, and the battery module supplies power to a load;

a second SOC value obtaining unit, configured to obtain an SOC value of the battery module;

and the second battery power supply control unit is used for controlling the battery module to stop supplying power to the load and controlling the UPS module to be converted from the battery power supply mode to the mains power supply mode when the SOC value is lower than or equal to the self-defined SOC threshold value.

4. The battery backup monitoring system of claim 1, further comprising:

and the charging module is used for charging the battery module when the battery module is in a non-full-charge state.

5. The battery backup monitoring system of claim 4, further comprising:

the charging parameter acquisition module is used for acquiring the charging battery parameters of the battery module;

the charging protection judging module is used for judging whether the parameters of the rechargeable battery meet preset charging protection conditions or not;

and the charging protection processing module is used for disconnecting the connection between the battery module and the UPS module and generating charging warning information when the rechargeable battery parameters meet preset charging protection conditions, the charging warning information is transmitted to the battery management system, and the battery management system outputs the charging warning information.

6. The battery backup monitoring system of claim 1, further comprising:

and the battery power supply switching module is used for controlling the battery module to supply power to a load when the UPS module enters a battery power supply mode.

7. The battery backup monitoring system of claim 6, further comprising:

the discharging parameter acquisition module is used for acquiring discharging battery parameters of the battery module;

the discharge protection judging module is used for judging whether the discharge battery parameters meet preset discharge protection conditions or not;

and the discharging protection processing module is used for disconnecting the connection between the battery module and the UPS module and generating discharging warning information when the discharging battery parameters meet preset discharging protection conditions, the discharging warning information is transmitted to a battery management system, and the battery management system outputs the discharging warning information.

8. The battery backup monitoring system of claim 6, further comprising:

the SOC value acquisition module is used for acquiring the SOC value of the battery module;

the SOC value judging module is used for judging whether the SOC value reaches a preset discharge threshold value or not;

and the battery power supply stopping module is used for controlling the battery module to stop supplying power to the load when the SOC value is lower than or equal to the preset discharge threshold value.

9. An uninterruptible power supply intelligent switching and monitoring system, characterized in that it comprises:

the battery backup monitoring system of any of claims 1-8;

a battery management system connected with the backup battery monitoring system;

a battery management unit connected with the backup battery monitoring system;

a battery module connected with the battery management unit;

one end of the shunt is connected with the battery module, and the other end of the shunt is connected with the standby battery monitoring system;

the UPS module comprises an alternating current input end, an alternating current output end, a direct current end and a state detection end, wherein the alternating current input end is connected with a mains supply, the alternating current output end is connected with a load, and the state detection end is connected with the standby battery monitoring system;

one end of the miniature circuit breaker is connected with the direct current end, and the other end of the miniature circuit breaker is respectively connected with the current divider and the standby battery monitoring system;

one end of the shunt tripping device is connected with the miniature circuit breaker, and the other end of the shunt tripping device is connected with the standby battery monitoring system;

and one end of the auxiliary contact is connected with the miniature circuit breaker, and the other end of the auxiliary contact is connected with the standby battery monitoring system.