CN204361705U - Stand-by power supply management system - Google Patents

Abstract

The utility model discloses a backup power supply management system, which comprises: a battery module, a battery management system electrically connected to the battery module, and a power access terminal connected to the battery management system; the battery management system includes: electrically connected to the battery module The battery monitoring module, the protection module electrically connected with the battery monitoring module, the power switch module, the real-time active equalization module, the temperature detection module, the MCU control module, the current detection module electrically connected with the power switch module, and the The MCU control module is electrically connected to a display module, a local area network connection module, a wireless network connection module and a local communication module; the current detection module is also electrically connected to a battery module, and the power switch module is used to connect a load. The backup power supply management system provided by the utility model can well solve the problem that the backup power supply system in the prior art lacks battery management, and ensures the uninterrupted operation of the equipment.

Description

Standby Power Management System

technical field

The utility model relates to the technical field of power supplies, in particular to a backup power supply management system.

Background technique

With the development of science and technology, more and more equipment needs to work uninterruptedly. The uninterrupted work of equipment is mainly realized by adding a backup power system. The added backup power system is mainly an uninterruptible power supply (Uninterruptible Power System/Uninterruptible Power Supply, UPS) or backup large-capacity batteries, and most of them are batteries. When the mains power fails, the backup power system starts to supply power to the equipment to ensure uninterrupted operation of the equipment. The existing backup power system lacks battery management, so it is not clear about the state of each battery in the backup power system, so that some of the battery voltages are low or broken and cannot be known in advance, and cannot be maintained in time, resulting in When the backup power system is used, the operation of the equipment is unstable, causing unnecessary losses. In this context, a backup power management system came into being.

Therefore, there are defects in the prior art and need to be improved.

Utility model content

The purpose of the utility model is to provide a backup power management system, which can well solve the problem of lack of battery management in the backup power system in the prior art, and ensure the uninterrupted operation of the equipment.

The technical solution of the utility model is as follows: the utility model provides a backup power management system, including: a battery module, a battery management system electrically connected to the battery module, and a power access terminal connected to the battery management system; The battery management system includes: a battery monitoring module electrically connected to the battery module, a protection module electrically connected to the battery monitoring module, a power switch module, a real-time active equalization module, a temperature detection module, and an MCU control module, A current detection module electrically connected to the power switch module, and a display module, a local area network connection module, a wireless network connection module and a local communication module electrically connected to the MCU control module; the current detection module is also connected to the battery The modules are electrically connected, and the power switch module is used for connecting the load.

The backup power management system also includes a power conversion module connected to the battery monitoring module, and the power conversion module is also electrically connected to the common terminal of the power switch module and the load.

The LAN connection module is an Ethernet module.

The connection mode between the wireless network connection module and the MCU control module is an RS232 interface mode or an RS485 interface mode, and the wireless network connection module is a GPRS module, a 3G module or a 4G module.

The connection between the MCU control module and the battery monitoring module is an SPI interface, and the connection between the MCU control module and the local communication module is an RS232 interface.

The battery module is a single cell or a battery pack, and the battery pack includes several single cells connected in series.

The single battery is a lead-acid storage battery, a nickel-metal hydride storage battery, a nickel-cadmium storage battery or a lithium-ion battery.

The temperature detection module includes a first temperature sensing probe and a second temperature sensing probe, the first temperature sensing probe is used to detect the temperature of the system circuit board, and the second temperature sensing probe is used to detect the temperature of the battery module temperature.

The display module is a liquid crystal display module.

By adopting the above scheme, the backup power management system of the present invention has complete functions, and can monitor each single battery in the battery module separately, and monitor the state information of the battery module in real time, which is convenient for maintenance and can be prepared in advance, and will not Due to the problem of the battery module, the business development is affected during the power outage, which brings irreparable losses; the system can also control the charging and discharging process of the battery module, greatly improving the life and stability of the battery module, and providing stable operation of the equipment. Moreover, the system can also be connected to the network for centralized and unified management, which can save a lot of manpower and material resources, and can also reduce the labor cost of the enterprise, which has good economic benefits for the society and the enterprise.

Description of drawings

Fig. 1 is a schematic structural diagram of the backup power management system of the present invention.

FIG. 2 is a schematic structural diagram of the battery management system in the backup power management system of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in detail.

Please refer to FIG. 1 and FIG. 2 , the utility model provides a backup power management system, including: a battery module 12 , a battery management system 14 electrically connected to the battery module 12 , and a power connection to the battery management system 14 . The input terminal 16, the common terminal of the battery management system 14 and the power supply terminal 16 is used to connect the load 18, through the battery management system 14, the power supply of the equipment can be automatically connected between the external power supply (power supply terminal) and the battery module. Switching to realize uninterrupted work of the equipment, and also manage the battery module 12, such as: real-time monitoring of the voltage of each single battery in the battery module 12 and active equalization operation; precise control of the charging and discharging process of the 12 battery modules; Various protection mechanisms are implemented during the process, and the working status of the battery module 12 is monitored in real time. Specifically, the battery management system 14 includes: a battery monitoring module 22 electrically connected to the battery module 12, a protection module 24 electrically connected to the battery monitoring module 22, a power switch module 26, a real-time active balance module 28, a temperature detection module 32, an MCU control module 34, a current detection module 36 electrically connected to the power switch module 26, and a display module 42 and a local area network connection module 44 electrically connected to the MCU control module 34 respectively , a wireless network connection module 46 and a local communication module 48 . The current detection module 36 is also electrically connected to the battery module 12, and the power switch module 26 is used for connecting a load.

The power switch module 26 completes the charging of the battery module 12 by the external power supply (connected from the power supply terminal 16 ) and the control of the power supply of the load 18 by the battery module 12 . When the external power supply is available, connect the external power supply to charge the battery module 12 when the battery module 12 needs to be charged, and turn off the connection between the external power supply and the battery module 12 when the battery module 12 does not need to be charged; The load 18 supplies power, and these control conversion processes are very short and have no influence on the operation of the equipment.

The current detection module 36 is used to detect the current when the battery module 12 is charged or the battery module 12 supplies power to the load 18. The current detection module 36 is realized by a precision Hall device, which has high detection precision and small error. The protection module 24 can provide a charging overcurrent protection function and an overcurrent protection function for discharging the load 18 according to the current. The protection module 24 controls the charging and discharging of the battery module 12 according to the voltage information of each single battery provided by the built-in battery chip and in combination with the set voltage parameters. The charging and discharging process adopts the method of pause charging and supplementary electricity, which is composed of constant current charging, constant voltage charging, static open circuit and supplementary electricity process. The four charging and discharging processes of the battery module 12 are repeated under the control of the system, which effectively protects the battery module 12 and prolongs the service life of the battery module 12 .

The connection between the MCU control module 34 and the battery monitoring module 22 is an SPI interface. The MCU control module 34 is used to complete various control and communication functions, and the MCU control module 34 is a control processing system based on a powerful ARM or POWERPC core. By communicating with the battery monitoring module 22 through the SPI interface, the voltage information of each single cell and the battery module 12 as a whole can be obtained, and the battery monitoring chip can also be configured and read to obtain relevant alarm information, and then perform corresponding control and operation .

The real-time active equalization module 28 completes the equalization operation of the voltages of the individual cells in the battery module 12. When the information monitored by the battery monitoring module 22 is transmitted to the MCU control module 34, the MCU control module 34 according to the parameters of the individual cells characteristics and combined with the set parameters to perform equalization operation on the single battery to ensure that the voltage of each single battery is equal within the error range, which not only ensures the stability of the backup power module but also prolongs the service life of the battery. The equalization operation is actively performed in real time and around the clock. The MCU control module 34 is constantly detecting the parameters of each single battery. Once the start-up condition is met, the equalization operation will be performed. Among them, the parameters related to the equalization operation include start-up pressure difference, stop pressure difference, and start-up voltage. . This equalization operation is mainly used to correct the discrete voltage of the single cells in series due to the individual differences of the single cells, so as to avoid the performance deterioration or even damage of the battery module 12 due to overcharging or undercharging of individual single cells .

The LAN connection module 44 is an Ethernet module, through which the communication with the remote system is completed. Of course, it can also be operated locally, and can monitor the operation of all equipment in real time, which is convenient for maintenance and management.

The connection mode between the wireless network connection module 46 and the MCU control module 34 is an RS232 interface or an RS485 interface, and the wireless network connection module 46 is a GPRS module, a 3G module or a 4G module. Using a perfect wireless mobile network, each device equipped with a backup power management system can be connected to the network, and unified and centralized management can be carried out through the network management system. The wireless network connection module 46 is optional configuration and can be used when needed. On-site upgrade, the upgrade only needs to add the module, no software upgrade is required.

The connection between the MCU control module 34 and the local communication module 48 is an RS232 interface. The local communication module 48 is used for connecting with a computer, and obtains the parameter information and alarm information of each single battery and the battery module 12 as a whole through the network management software or the hyper terminal of the computer, and can also carry out some power supply monitoring for the backup power management system. Parameter configuration, these parameters include: overvoltage value, undervoltage value, overcurrent value, charge and discharge parameters, temperature protection value, etc.

The display module 42 is a liquid crystal display module, through which the battery information, alarm information, and working status can be directly viewed, and the status information of the backup power management system can be understood without the help of the network management system, which greatly facilitates on-site inspections , more convenient for on-site maintenance.

The battery module 12 is used to output the same voltage as the external power supply, and is connected together with the external power supply through the power switch module 26 to form a power supply system with the same port. On the one hand, the battery module 12 can be charged when the external power supply is available; When the external power supply is unavailable, it is automatically switched to the battery module 12. The battery module 12 is a single cell or a battery pack, and the battery pack includes several single cells connected in series. The single battery is a lead-acid storage battery, a nickel-metal hydride storage battery, a nickel-cadmium storage battery or a lithium-ion battery.

The temperature detection module 32 includes a first temperature sensing probe and a second temperature sensing probe, the first temperature sensing probe is installed on the system circuit board for detecting the temperature of the system circuit board; the second temperature The sensing probe is installed on the battery module for detecting the temperature of the battery module. Once the detected temperature exceeds the preset temperature threshold, the system will display an over-temperature alarm and perform related operations to cool down to maintain system stability.

The protection module 24 mainly completes the protection operation of the equipment during operation, including over-temperature protection, over-voltage/under-voltage protection of the single battery, over-voltage/under-voltage protection of the battery module 12 as a whole, and over-current protection of charging and discharging. , High current short circuit protection, etc.

The backup power management system further includes a power conversion module 38 connected to the battery monitoring module 22 , and the power conversion module 38 is also electrically connected to the common end of the power switch module 26 and the load 18 . The power conversion module 38 is also electrically connected to the power input terminal 18, and is used to convert 220V AC power to DC power, and output -48V, 24V or 12V voltage as required. In practical applications, the power conversion module 38 Optionally, the power conversion module 38 is needed to complete the conversion when there is only AC power. When there is a DC power supply in the environment, the power conversion module 38 is not needed, and the DC power can be directly connected, which is convenient and flexible.

The battery monitoring module 22 is used to monitor the voltage of the single battery in the battery module 12 or the single battery in the battery pack, so as to obtain which single battery is open circuit and which single battery voltage is too low , which single battery voltage is too high, the capacity of each single battery, etc., and pass these information to the MCU control system 34, and the MCU control system 34 reports to the network management system, so that the battery module 12 can be maintained in time to know each The working state of the single battery will not cause the unstable operation of the equipment due to the instability of the voltage of each single battery. The number of the battery monitoring modules 22 is selected according to the number of single batteries included in the battery module 12 in practical applications. The battery monitoring module 22 uses a precise battery voltage monitoring chip to monitor the voltage of each single battery, with a very small error, which can be controlled at the mV level, and the monitoring accuracy is high.

To sum up, the utility model provides a backup power management system with complete functions, which can monitor each single battery in the battery module separately, monitor the status information of the battery module in real time, facilitate maintenance, and make preparations in advance , it will not affect the business development during the power outage process due to the problem of the battery module, and cause irreparable losses; the system can also control the charging and discharging process of the battery module, greatly improving the life and stability of the battery module. Stable operation is guaranteed; moreover, the system can also be connected to the network for centralized and unified management, which can save a lot of manpower and material resources, and can also reduce the labor cost of enterprises, which has good economic benefits for society and enterprises.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model should be included in the utility model. within the scope of protection.

Claims (8)

1. a stand-by power supply management system, is characterized in that, comprising: battery module, the battery management system be electrically connected with described battery module and the power access end with described battery management system; Described battery management system comprises: the battery detection module be electrically connected with described battery module, the protection module be electrically connected with described battery detection module respectively, power switching modules, in real time active equalization module, temperature detecting module, MCU control module, the current detection module be electrically connected with described power switching modules, and the display module, local area network (LAN) link block, wireless network link block and the local communication module that are electrically connected with described MCU control module respectively; Described current detection module is also electrically connected with battery module, and described power switching modules is for connecting load;

Described temperature detecting module comprises the first temperature sensing probe and the second temperature sensing probe, and described first temperature sensing probe is used for the temperature of detection system circuit board, and described second temperature sensing probe is for detecting the temperature of battery module.

2. stand-by power supply management system according to claim 1, is characterized in that, also comprises the power transfer module with described battery detection module, and described power transfer module is also electrically connected with the common port of power switching modules and load.

3. stand-by power supply management system according to claim 1, is characterized in that, described local area network (LAN) link block is ethernet module.

4. stand-by power supply management system according to claim 1, it is characterized in that, the connected mode of described wireless network link block and described MCU control module is RS232 interface mode or RS485 interface mode, and described wireless network link block is GPRS module, 3G module or 4G module.

5. stand-by power supply management system according to claim 1, it is characterized in that, the connected mode of described MCU control module and described battery detection module is SPI interface mode, and the connected mode of described MCU control module and described local communication module is RS232 interface mode.

6. stand-by power supply management system according to claim 1, is characterized in that, described battery module is cell or battery pack, and described battery pack comprises several cell be connected in series.

7. stand-by power supply management system according to claim 6, is characterized in that, described cell is lead acid accumulator, nickel-hydrogen accumulator, cadmium-nickel storage cell or lithium ion battery.

8. stand-by power supply management system according to claim 1, is characterized in that, described display module is LCD MODULE.