TWI678858B - Remote battery monitoring and maintenance system and test method for backup equipment - Google Patents

Abstract

A remote battery monitoring and maintenance system and test method for a backup device, including a plurality of battery detection modules for performing different periods of charge voltage test, no-load voltage test, shallow discharge test on batteries in the multiple backup device, and Deep discharge test. A plurality of wireless transmission modules are used to upload the test data to the cloud database. A supervisory operation terminal system retrieves the data in the cloud database, detects abnormal equipment (including batteries), and issues an alarm signal. Calculate, cross-compare, analyze and judge all data to estimate the status of the multiple batteries and modify the test methods and judgment data of the multiple battery test device, and then notify the battery manufacturer to perform abnormal battery tests. Corresponding replacement and repair operations, and providing data to the backup equipment manufacturer as a basis for design modification; this will ensure that the battery of the backup equipment works normally.

Description

Remote battery monitoring and maintenance system and test method for backup equipment

The invention relates to the technical field of battery monitoring and testing of a backup device, and more particularly to a backup device that can automatically detect and report whether a battery is good or not, and then automatically report for maintenance to ensure that the battery of the backup device works normally. Remote battery monitoring and maintenance system and test method.

The batteries of general backup equipment are mostly used to provide power for backup. For example, the battery in emergency lighting is used to light the light source for emergency lighting when the power is off. The uninterruptible device is used to convert the electric energy of the battery into AC power for computer or other electrical equipment for emergency use when the power is cut off. The starter battery of a diesel generator is used to start the generator when the power fails. These batteries are either installed in places that are not easily accessible, or are usually unattended and inspected. They are often found in an emergency when the battery has failed or its capacity has fallen to insufficient levels to support minimum safety requirements. Therefore, a system that can monitor the batteries of these backup devices is usually needed.

However, the problem is:

1. There are many types of batteries (such as lead batteries, lithium batteries, lithium iron phosphate batteries, nickel-chromium batteries, and nickel-metal hydride batteries). There are also many brands. Different types of batteries and different brands have different battery characteristics and quality. .

2. The capacity and specifications of the battery are also different, such as fast charge, slow charge, and fast charge. Fast play, slow charge, slow play, fast charge, slow play ... etc.

3. The use occasions are also different. For example, they are used as emergency lighting. Some regulations require that the lights be lit for 30 minutes after a power failure, and some occasions should be lit for one and a half hours. As a backup power source, in some cases, as long as the system can be powered for 10 minutes after the power outage to shut down the system, some places need to be able to support 30 minutes, and even some places require continuous power supply for several hours. Different applications use different discharge rates (short-time fast discharge, or long-term slow discharge). Specially safe places sometimes increase the capacity of the battery to ensure the battery's operating time.

4. The environment temperature of the place where the battery is placed is different. For example, the air-conditioned office generally maintains a temperature of about 25 degrees, and the factory warehouse without an air conditioner has a temperature ranging from 30 to 35 degrees. In some high-temperature areas, the temperature of the factory building can reach as high as 40 degrees or more, and the temperature in the freezing work area sometimes approaches zero degrees. The impact of different ambient temperatures on battery capacity and battery self-discharge is very large, especially at more extreme temperatures (below -10 degrees and above 40 degrees), which has a greater impact on battery life. Specifications to calculate capacity and life are very easy to misalign.

Therefore, it is unreasonable to use the same method to detect the battery of all backup equipment and estimate its use status (such as life). At the same time, design special tests for the battery and use of each backup equipment. Equipment and test modes are also uneconomical.

In view of this, the present inventors have conceived and actively researched, improved, and tried to solve the above problems, and then developed and designed the present invention.

The main purpose of the present invention is to solve the problem that the conventional method uses the same method to detect the battery of all backup equipment and estimate its use condition, which is likely to cause serious inaccuracy, and to solve the problem that the backup method is used for each type of backup at the same time. The battery and use occasions of the equipment are designed with dedicated test equipment and test modes, which are not in accordance with the economic benefits.

The remote battery monitoring and maintenance system of the backup device according to the present invention includes a plurality of battery detection modules, a plurality of wireless transmission modules, and a supervisory operation terminal. Wherein, the plurality of battery detection modules are respectively provided in the plurality of backup devices, and are used to periodically perform full-charge voltage detection and shallow discharge voltage test on one of the plurality of backup devices to obtain the plurality of batteries. Fully charged voltage and short-term discharge voltage. The plurality of wireless transmission modules are used for uploading the detection and test data of the plurality of battery detection modules to a cloud database to associate with the battery and backup equipment data input in advance in the cloud database. The supervisory operation terminal can retrieve the data in the cloud database and perform calculations, cross-comparisons, analysis and judgments to estimate the status of the plurality of batteries and correct the detection and test of the plurality of battery testing devices. Method and judgment data, and notify the battery manufacturer to perform corresponding replacement and maintenance operations on abnormal batteries, and provide relevant data to the backup equipment manufacturer as the basis for equipment modification design. High voltage indicates that the battery is damaged or the charging circuit is abnormal. Low voltage indicates that the battery may be damaged or the charging circuit is abnormal and insufficiently charged. The voltage during this short discharge can roughly estimate the battery capacity.

The battery test method of the backup device according to the present invention includes: In the first cycle, connect the power supply, cut off the load to form the charging voltage test state, and then read the battery voltage. If the voltage is incorrect (too high or too low), set the battery error flag and send the test reading. , Return to the normal state of the system, if the battery voltage is within the preset range, send a test reading to return to the normal state of the system, and wait for the next test; in a second cycle, cut off the power, cut off the load, and form a no-load Voltage test status, and then read the battery voltage. If the voltage is lower than the expected value, set the battery error flag, send the test reading value, and return to the normal state of the system. If the battery voltage is within the preset range, check whether the test time is completed. If the test has not been completed, the test will continue to be performed. If the test time has been completed, the test reading will be sent back to the normal state of the system and wait for the next test. In a third cycle, the power is cut off and the load is connected to form a discharge test. Status, and then read the battery voltage, if this voltage is lower than the expected value, set the battery error flag, send the test reading value, and return to the normal state of the system If the battery voltage is within the preset range, check whether the test time is completed. If it is not completed, continue to perform the test. If the test time is completed, send the test reading value back to the normal state of the system and wait for the next test; in a fourth cycle Medium, cut off the power, connect the load to form a discharge test state, and then read the battery voltage. If the voltage is lower than the expected value, set the battery error flag, send the test reading, and return to the normal state of the system. Within the preset range, check whether the test time is completed. This test time is longer than the test period of the third cycle. If the test time is not completed, the test is continued. If the test time is completed, the test reading value is returned to the normal state of the system. Wait for the next test.

Remote monitoring and maintenance of battery of backup equipment provided by the present invention The system and test method can use the plurality of battery detection modules to regularly perform full-charge voltage detection, no-load voltage test, shallow discharge voltage test, deep discharge voltage test, and battery environment of the corresponding backup device battery. The temperature is detected, and then the corresponding wireless transmission module is used to upload the detected and tested data to the cloud database, which is classified and integrated by the cloud, and then calculated and cross-checked by the supervisory operation terminal , Analysis and judgment, you can find more questions about quality and design. This is to make it available: when a fault is found in a regulated battery or backup device, the battery manufacturer or backup device manufacturer can be immediately notified for repairs, and when the capacity of the regulated battery is estimated to be lower than the safe value When notifying the battery manufacturer to arrange replacement (non-immediate service demand), all battery usage data from the same manufacturer can be submitted to the battery manufacturer for analysis and analysis to help the manufacturer understand that the battery it produces is under different conditions of use The characteristics of the battery and the performance of the battery can be improved. The battery data of all the backup equipment produced by the same manufacturer can be submitted to the backup equipment manufacturer for a unified analysis to assist the manufacturer to modify the design of its equipment based on these data. efficacy.

10‧‧‧ Battery Detection Module

11‧‧‧Load switch

12‧‧‧virtual load

13‧‧‧Virtual load switch

14‧‧‧ Power Switch

15‧‧‧Temperature Detector

16‧‧‧Master Control Unit

20‧‧‧Wireless transmission module

30‧‧‧Supervised operation terminal

40‧‧‧ battery

50‧‧‧ Cloud Database

60‧‧‧ Battery Manufacturer

70‧‧‧ backup equipment manufacturers

80‧‧‧Charging circuit

81‧‧‧Load

82‧‧‧ Foreign Power

FIG. 1 is a schematic diagram of a system architecture of the present invention.

FIG. 2 is a schematic structural diagram of a battery detection module of the present invention.

FIG. 3 is a graph showing the relationship between the open-circuit voltage and the remaining capacity of the lead-acid battery in the no-load voltage measurement formula of the present invention.

FIG. 4 is a graph showing the relationship between the capacity and the temperature of a lead-acid battery in the no-load voltage measurement formula of the present invention.

Fig. 5 is a graph showing the relationship between the lithium battery on-voltage and the remaining capacity when the no-load voltage measurement formula of the present invention is used.

FIG. 6 is a graph showing the relationship between the capacity and the temperature of the lithium battery in the no-load voltage measurement method of the present invention.

FIG. 7 is a graph of a discharge curve of a lead-acid battery when the shallow discharge voltage measurement formula of the present invention is used.

FIG. 8 is a relation table of the capacity vs. temperature of a lead-acid battery in the shallow discharge voltage measurement type of the present invention.

FIG. 9 is a graph showing the discharge curve of a lithium battery in the shallow discharge voltage measurement method of the present invention.

Fig. 10 is a graph showing the relationship between the capacity and temperature of a lithium-acid battery when the shallow discharge voltage measurement formula of the present invention is used.

FIG. 11 is a flowchart of a battery test of the present invention.

Please refer to FIG. 1 and FIG. 2, which show that the battery remote monitoring and maintenance system of the backup device according to the present invention includes a plurality of battery detection modules 10, a plurality of wireless transmission modules 20 and a supervisory operation terminal 30. . among them:

The plurality of battery detection modules 10 are respectively provided in a plurality of backup devices, and are used to periodically perform full-charge voltage detection, no-load voltage test, and shallow discharge voltage test on one of the batteries 40 in the plurality of backup devices. 、 Deep discharge voltage test and battery ambient temperature detection to obtain the voltage when the battery is fully charged, the open circuit voltage when there is no load after stopping charging for a period of time after full charge, the voltage during short-term discharge, and the longer time Discharge voltage and battery ambient temperature.

The plurality of wireless transmission modules 20 are used for uploading the detection and test data of the plurality of battery detection modules 10 to a cloud database 50 to communicate with the cloud data. The battery and backup equipment data entered in the magazine 50 are related. The battery and backup equipment information includes the battery manufacturer, model, specifications, manufacturing batch number and the manufacturer, model, manufacturing batch number, version, installation date, commissioning date and other information of the backup equipment, the battery and backup equipment information After the backup device is installed, it can be manually or logged into the cloud database 50, or it can be stored on the backup device or the battery 40 in advance. When the backup device is installed, it will be automatically included with the battery. The test data is uploaded to the cloud database 50 together. In the present invention, the wireless transmission module 20 can be WIFI, BT, or LPWAN specifications. For example, the wireless transmission module 20 can be transferred to the public network xDS through the WIFI network in the area to transmit all detection data to the cloud data. Library 50; or multiple battery detection modules 10 can be connected through a gateway, and then all detection data is transmitted to the cloud database 50 using a low-power wide-area radio LPWAN; or in a field with a small number of devices The low-power wide-area radio LPWAN can be used to directly transmit all detection data to the cloud database 50.

The supervisory operation terminal 30 can retrieve data in the cloud database 50 and perform calculation, cross-comparison, analysis and judgment to estimate the status of the plurality of batteries 40 and correct the plurality of battery detection modes. The detection and test methods and judgment data of group 10, and based on this, notify the battery manufacturer 60 to perform corresponding replacement and maintenance operations on the abnormal battery 40, and provide relevant data to the backup equipment manufacturer 70 as equipment modification Design basis. The excessively high voltage when fully charged indicates that the battery 40 is damaged or the charging circuit is abnormal. If the voltage is too low, it indicates that the battery 40 may be damaged or the charging circuit is abnormal and insufficiently charged. When the charging is stopped, the charging is stopped for a period of time and there is no load. The open circuit voltage represents the aging condition of the material inside the battery 40. If it is lower than the preset value, it means The battery 40 has begun to age. The lower the voltage, the more severe the aging. The voltage during the short-time discharge can roughly estimate the capacity of the battery 40, and the voltage during the long-time discharge can accurately estimate the capacity of the battery 40. The battery ambient temperature can assist in determining the condition of the battery 40 to improve accuracy.

Please refer to FIG. 2, it is pointed out that the backup device is provided with a charging circuit 80 and a load 81. The battery detection module 10 includes a load switch 11, a virtual load 12, and a virtual load on / off. Off 13, a power switch 14, a temperature detector 15, and a main control unit 16. The charging circuit 80 is connected to an external power 82 for converting and storing the power in the battery 40. The load 81 is powered by the external power 82 or the battery 40. The load changeover switch 11 can choose to be powered by the external power 82 or the battery 40 to the load 81. The virtual load 12 is used as a discharge load on a backup device that is not suitable for a discharge test using a real load 81. The virtual load switch 13 can cut off or communicate the power provided by the battery 40 to the virtual load 12. The power switch 14 selects whether the external power 82 and the charging circuit 80 are turned on. The temperature detector 15 is used to detect the ambient temperature near the battery 40. The main control unit 16 controls the load switch 11, the virtual load switch 13, and the power switch 14 to switch and detect the voltage of the battery 40 and the external power 82 and receive the detection from the temperature detector 15. As a result, it is also connected to the corresponding wireless transmission module 20 to upload detection and test data to the cloud database 50 through the wireless transmission module 20.

The battery detection module 10 performs full-charge voltage detection, no-load voltage test, shallow discharge voltage test, and deep discharge voltage test on the battery 40. under:

1. Charging and full-charge voltage detection: Usually, the power switch 14 turns on the external power 82 and the charging circuit 80, and the load switch 11 is switched to provide power from the external power 82 to the load 81, so that the external power 82 passes through the The charging circuit 80 charges the battery 40, and the main control unit 16 can detect the fully charged voltage of the battery 40. If the voltage is too high or too low, it indicates that the battery 40 has failed.

2. No-load voltage test: The main control unit 16 controls the power switch 14 to cut off the external power 82 and the charging circuit 80, and then controls the load switch 11 to switch to provide power from the external power 82 to the load 81 ( This step is not necessary if the off-line system is offline), so that the charging circuit 80 no longer charges the battery 40 (that is, the battery 40 is not loaded), and the main control unit 16 can detect when the battery 40 is not loaded. The voltage. If this voltage disappears immediately, it means that the battery 40 is not connected. If this voltage drops rapidly, the battery 40 has failed. Because the ambient temperature is linked to the battery voltage, this voltage and temperature will be interpreted collectively in the cloud.

3. Shallow and deep discharge voltage test: The main control unit 16 controls the power switch 14 to cut off the external power 82 and the charging circuit 80, and then controls the load switch 11 to switch to the battery 40 to provide power to the load. 81, the main control unit 16 can detect the shallow discharge voltage and the deep discharge voltage of the battery 40 respectively according to the maintaining time. The shallow discharge voltage test needs to be performed frequently, about 1 ~ 5% of the capacity of the battery 40, and the capacity of the battery 40 can be roughly judged. However, a deep discharge voltage test still needs to be performed for a period of time, which is about 10 ~ 30% of the capacity of the battery 40, and the capacity of the battery 40 can be judged relatively accurately. This test will be set according to different battery capacity, load size, The test time, of course, if the voltage of the battery 40 is lower than expected during the test, the test procedure will be stopped immediately.

In some places that are not suitable for the discharge test using a real load 81 (such as a power generator for power failure), the main control unit 16 can control the cooperation of the load switch 11 and the virtual load switch 13 to make In the full-charge voltage detection, the no-load voltage test, the shallow discharge voltage test, and the deep discharge voltage test, the virtual load 12 replaces the real load 81.

The quality of the battery 40 is generally measured and its capacity is estimated from the voltage (VC) when the battery is fully charged, the voltage at no load (VF), and the test discharge at different times (VDL & VDH) The comprehensive voltage is used to make a comprehensive judgment. These judgments will be more accurate if they are added to the operating temperature (Te). E.g:

1. Measure the voltage (VC) when the battery is fully charged. If this voltage is too high, it means that the battery is damaged or the charging circuit 80 is abnormal; if it is too low, it means that the battery may be damaged or the charging circuit 80 is abnormally insufficient to charge. Take a six-string lead-acid battery as an example, this value is 13.8V (@ 25 ° C); take a single-cell lithium battery as an example, this value is 4.2V (@ 25 ° C), and multiple batteries are calculated in proportion. Since this voltage is determined by the charging circuit 80, battery characteristics and temperature effects are small.

2. Measure the open-circuit voltage (VF) when the battery stops charging for a period of time (10 ~ 60 minutes) after being fully charged. This voltage will show the aging condition of the battery's internal materials. If it is lower than the preset value, it means that the battery has been discharged. Start aging, the lower the voltage, the more serious the aging. You can find out the approximate capacity of the battery through the relationship table. The battery of the backup equipment needs to be fully charged, so this data is only for reference. Of course, if the difference is too large, It means that the battery is unfit for backup. Take a six-string lead-acid battery as an example. This value is 12.8V (@ 25 ° C). If the voltage is lower than 12.3V, it indicates that the battery's available capacity is less than 50%. As shown in the figure, the relationship between capacity and temperature is shown in Figure 4.) Taking a single-cell lithium battery as an example, this value is 4.0V (@ 25 ° C). If the voltage is lower than 3.85V, the available capacity of the battery is less than 50% (the relationship between the open circuit voltage and capacity of the lithium battery is as shown in Figure 5). (The relationship between capacity and temperature is shown in Figure 6), and multiple cells are calculated in proportion.

3. Measure the voltage (VDL) when the battery is discharged for a short time (a few minutes, about 1% of the total capacity). This voltage can roughly determine the battery capacity. Take a six-string lead-acid battery as an example. This value is 12.4V (@ 25 ° C). If the voltage is lower than 11.9V, the battery's available capacity is less than 50%, it should be judged as unusable (different discharge rates of lead-acid batteries). The relationship between the discharge time and the battery voltage is shown in Figure 7, and the relationship between the different discharge rate and temperature affecting capacity is shown in Figure 8. Taking a single-cell lithium battery as an example, this value is 3.85V (@ 25 度 C). If the voltage is lower than 3.6V, the battery's available capacity is less than 50%, and it should be judged as unusable. (The relationship between the different discharge rates of lithium batteries and the impact on capacity and voltage is shown in Figure 9. (Shown), multiple batteries are calculated proportionally.

4. Measure the voltage (VDH) when the battery is discharged for a long time (more than ten minutes, about 10% of the total capacity). This voltage can accurately estimate the battery capacity. Taking a six-string lead-acid battery as an example, this value is 12.2V (@ 25 ° C). If the voltage is lower than 11.5V, the battery's available capacity is less than 50%. Take a single-cell lithium battery as an example. This value is 3.82V (@ 25 ° C). If the voltage is lower than 3.6V, the battery is available. The capacity is less than 50%, and multiple batteries are calculated in proportion.

The remote battery monitoring and maintenance system of the backup device provided by the present invention can perform full-charge voltage detection and no-load voltage test on the corresponding backup device's battery at regular intervals through the multiple battery detection module 10 , Shallow discharge voltage test, deep discharge voltage test and battery ambient temperature detection, and then use the corresponding wireless transmission module 20 to upload the detected and tested data to the cloud database 50 for classification and integration in the cloud After that, the supervisory operation terminal 30 performs calculations, cross-comparisons, analysis, and judgments, and can find more questions about quality and design. This allows it to:

1. When it is found that the supervised battery 40 or the backup device is faulty, the battery manufacturer 60 or the backup device manufacturer 70 can be immediately notified for repair.

2. When the capacity of the supervised battery 40 is estimated to be lower than the safe value, the battery manufacturer 60 is notified to arrange replacement (non-immediate service demand).

3. The usage data of all the batteries 40 produced by the same manufacturer can be submitted to the battery manufacturer 60 for unified analysis, which can help the manufacturer to understand the characteristics of the batteries 40 produced by it under different conditions of use and improve its batteries accordingly. Effectiveness of 40.

4. The data of the battery 40 on the backup equipment produced by the same manufacturer can be submitted to the backup equipment manufacturer 70 for a unified analysis, which can assist the manufacturer to modify the design of its equipment based on these data.

The remote battery monitoring and maintenance system of the backup device provided by the present invention uses the above functions in practical applications. Both the backup device and the battery can be operated by renting. The user does not need to purchase the device. The operator provides backup. Equipment is long Instead of supervising and inspecting all equipment for users, it can have the following effects:

1. Users do not need to invest in purchasing redundant equipment. They only need to rent and maintain personnel to keep all equipment running normally.

2. Battery and backup equipment manufacturers 60 and 70 are able to obtain a basis for improving products or reducing costs from big data.

3. While the battery and backup equipment dealers have improved customer service, they have saved a lot of maintenance personnel.

4. The users (office staff, passengers, customers, etc.) of the installation site of the backup equipment can stay in a safer and more convenient environment.

5. The appropriateness rate of various batteries and devices collected in the cloud can be used for product level classification, and the power outage data collected can faithfully reflect the stability of the power supply system in each area and the temperature data collected by the system in all areas can be used as a comprehensive Regional temperature distribution data, the influence of different buildings on indoor temperature at different times, plus data such as sunshine, season, wind direction, vehicle density, and personnel density can be used as a reference for urban planning and architectural design.

Please refer to FIG. 11 for a battery test method of the backup device according to the present invention, which mainly uses a timer to distinguish a first cycle of 10 seconds, a second cycle of 1 hour, and a day. One of the third cycle and one of the fourth cycle of 30 days to perform the above-mentioned charging voltage test, no-load voltage test, shallow discharge voltage test, and deep discharge voltage test on the battery 40, respectively. The steps (please refer to Figure 2 for cooperation) include: 1. In the first cycle (10 seconds), connect the power supply, cut off the load to form the charging voltage test state, and then read the battery voltage. If this voltage is incorrect (too high or too low), set the battery error. Flag, send the test reading and return to the normal state of the system. If the battery voltage is within the preset range, send the test reading to return to the normal state of the system and wait for the next test; 2. In this second cycle (1 hour), cut off the power and load to form the no-load voltage test state, and then read the battery voltage. If the voltage is lower than the expected value, set the battery error flag and send it out. Test reading, return to the normal state of the system. If the battery voltage is within the preset range, check whether the test time is completed. If the test time has not been completed, continue to perform the test. If the test time (10 minutes) has been completed, send the test reading and reply. Go to the normal state of the system and wait for the next test; 3. In this third cycle (1 day), cut off the power, connect the load to form a discharge test state, and then read the battery voltage. If the voltage is lower than the expected value, set the battery error flag and send the test reading. Value, return to the normal state of the system. If the battery voltage is within the preset range, check whether the test time is completed. The test time is about 1 minute (about 1% of the total battery capacity). If it is not completed, continue the test. If the test time If it is completed, the test reading value will be sent back to the normal state of the system, waiting for the next test; 4. In the fourth cycle (30 days), cut off the power, connect the load to form a discharge test state, and then read the battery voltage. If the voltage is lower than the expected value, set the battery error flag and send the test reading. Value, return to the normal state of the system. If the battery voltage is within the preset range, check whether the test time is completed. This test time is longer than the third cycle test time. The test time is about 10 minutes (about the total battery capacity). 10%), if the test has not been completed, continue to execute the test, if the test time has been completed, the test reading value is returned to the normal state of the system, waiting for the next test.

Because the backup battery is reserved but not used, the discharge test cannot be frequently performed to affect its normal function. Therefore, the test cycles of the above four voltage test methods are designed, and the battery ambient temperature data is used to judge the quality of the battery and estimate its capacity. The basis of maintenance so that all equipment can be used. This test cycle is mainly applicable to fields such as emergency lighting. Other different use occasions and different security levels may have different test cycle designs.

In summary, since the present invention has the above-mentioned advantages and practical values, and no similar products have been published in similar products, the application requirements for invention patents have been met, and applications have been filed in accordance with the law.

Claims (10)

A remote battery monitoring and maintenance system for a backup device includes: a plurality of battery detection modules, each of which is provided in a plurality of backup devices, and is used to regularly charge a battery of the plurality of backup devices with a full charge voltage; Detection and shallow discharge voltage test to obtain the voltage when the battery is fully charged and the voltage when discharged for a short time; multiple wireless transmission modules are used for the detection and test data of the multiple battery detection module respectively Upload to a cloud database to connect with the battery and backup equipment data entered in the cloud database in advance; and a supervisory operation terminal that can retrieve the data in the cloud database and perform calculations and cross-comparisons , Analysis and judgment to estimate the status of the plurality of batteries and to modify the detection, test methods and judgment data of the plurality of battery detection devices, and to inform the battery manufacturer to replace the abnormal batteries accordingly and Repair operations, and provide relevant data to backup equipment manufacturers as the basis for equipment modification design, where the high voltage when fully charged indicates that the battery is damaged or charged Road abnormal, the battery is too low may be damaged or abnormal charging circuit so insufficiently charged, the voltage at which the system can roughly estimate the short-time discharge capacity of the battery. The remote battery monitoring and maintenance system for the backup device according to claim 1, wherein the plurality of battery detection modules are used to perform a no-load voltage test and a deep discharge voltage on one of the plurality of backup devices, respectively. Test to obtain the open circuit voltage when the multiple batteries are fully charged and stop charging for a period of time after no load, the voltage during short-term discharge, and the voltage during longer-term discharge. The supervisory operation terminal can determine based on the above information. The open circuit voltage when the battery is fully charged and stopped for a period of time after no load represents the aging condition of the battery internal materials. If it is lower than the preset value, it indicates that the battery has begun to age. The lower the voltage, the more severe the aging. The voltage during discharge can more accurately estimate the capacity of the battery. The remote battery monitoring and maintenance system of the backup device according to claim 2, wherein the plurality of battery detection modules are used to periodically perform battery ambient temperature detection on one of the batteries in the plurality of backup devices to obtain The battery ambient temperature of the plurality of batteries, the supervisory operation terminal can assist the judgment of the battery condition based on the above data to improve accuracy. The remote battery monitoring and maintenance system for the backup device as described in claim 3, wherein each backup device is provided with a charging circuit and a load, and the charging circuit is connected to an external power for converting its power and Stored in the battery, the load can be powered by the external power or the battery. Each battery detection module includes a load switch, a power switch, a temperature detector and a main control unit. The load The switch-on relationship can choose to provide power to the load by one of the external power or the battery. The power-on relationship can select whether the external power and the charging circuit are connected. The temperature detector is used to detect the vicinity of the battery. Ambient temperature, the main control unit controls the load switch and the power switch to switch and detect the voltage of the battery and the external power and receives the detection result of the temperature detector, and corresponds to the wireless The transmission module is connected to upload detection and test data to the cloud database through the wireless transmission module. The remote battery monitoring and maintenance system for the backup device according to claim 4, wherein each battery detection module includes a virtual load and a virtual load switch. The virtual load is not suitable for discharging with a real load. The tested backup device is used as a discharge load. The virtual load switching on-off relationship can cut off or connect the power provided by the battery to the virtual load. The main control unit is used to control the virtual load switching switch for switching. The remote battery monitoring and maintenance system for the backup device according to claim 5, wherein: usually, the power switch is connected to the external power and the charging circuit, and the load switch is switched to provide power to the load by external power. The external power charges the battery through the charging circuit, and the main control unit can detect the voltage at which the battery is fully charged; when the main control unit controls the power switch to cut off the external power and the charging circuit, at the same time When the load changeover switch is controlled to be powered by the external power to the load, the charging circuit no longer charges the battery, and the main control unit can detect the voltage when the battery is unloaded; when the main control unit controls When the power switch switches off the external power and the charging circuit, and at the same time controls the load switch to switch to provide power from the battery to the load, the main control unit can detect the shallow discharge of the battery according to the maintenance time. Voltage and deep discharge voltage. The remote battery monitoring and maintenance system for the backup device according to claim 6, wherein the main control unit can detect the full-charge voltage by controlling the cooperation of the load switch and the virtual load switch. 3. No-load voltage test: Shallow discharge voltage test and deep discharge voltage test, make the virtual load replace the real load. A remote battery monitoring and maintenance system for a backup device includes: a battery detection module for detecting various data of a battery at regular intervals; and a wireless transmission module for the battery detection module. An electrical connection is provided for uploading the data detected by the battery detection module to the cloud. A battery testing method for a backup device includes: in a first cycle, connecting a power source, cutting off a load, forming a charging voltage test state, and then reading the battery voltage if the voltage is incorrect (too high or too low) ), Set the battery error flag, send the test reading, and return to the normal state of the system. If the battery voltage is within the preset range, send the test reading to return to the normal state of the system, and wait for the next test; in a second cycle , Cut off the power, cut off the load to form the no-load voltage test state, and then read the battery voltage. If the voltage is lower than the expected value, set the battery error flag, send the test reading value, and return to the normal state of the system. If the voltage is within the preset range, check whether the test time is completed. If the test time is not completed, continue to perform the test. If the test time is completed, send the test reading value, return to the normal state of the system, and wait for the next test; in a third cycle , Cut off the power, connect the load to form a discharge test state, and then read the battery voltage. If this voltage is lower than the expected value, set the battery error flag Send the test reading and return to the normal state of the system. If the battery voltage is within the preset range, check whether the test time is completed. If the test time has not been completed, continue the test. If the test time is completed, send the test reading to return to the system normal state. , Wait for the next test; in a fourth cycle, cut off the power, connect the load to form a discharge test state, and then read the battery voltage. If this voltage is lower than the expected value, set the battery error flag and send the test read Value, return to the normal state of the system. If the battery voltage is within the preset range, check whether the test time is completed. This test time is longer than the third cycle test time. If it is not completed, continue to perform the test. If the test time is completed, The test reading value is sent back to the normal state of the system, waiting for the next test. The battery test method for a backup device as described in claim 9, wherein the first cycle is 10 seconds, the second cycle is 1 hour, the test time is 10 minutes, the third cycle is 1 day, and the test time is approximately 1 minute (about 1% of the total battery capacity), the fourth cycle is 30 days, and the test time is about 10 minutes (about 10% of the total battery capacity).