Remote online capacity checking device and system for communication storage battery

Abstract

The utility model provides a remote on-line capacity checking device and system for a communication storage battery, which comprises a high-frequency DC / DC boosting module and a high-frequency DC / DC steady-current charging module which are connected in parallel, the high-frequency DC / DC boosting module and the high-frequency DC / DC steady-current charging module both adopt an isolated bidirectional DC / DC circuit structure, and a monitoring module is in bus communication connection with the storage battery and detection equipment thereof and is used for monitoring and controlling the storage battery; the input end of the rectifier is connected with the output end of the alternating-current standby power supply located in the bypass, and the output end is connected to the input end of the storage battery; the negative electrode of the storage battery is connected with the negative electrode of a communication power supply, and the positive electrode of the storage battery is connected to the positive electrode of the communication power supply through the normally open contact of the first contactor, the high-frequency DC / DC boosting module and the high-frequency DC / DC steady-current charging module in sequence. According to the utility model, the monitoring module is used for remotely monitoring the storage battery and the alarm state in real time, and the contactor is used for controlling the charging and discharging of the storage battery, thereby achieving the effects of remotely monitoring the working state of the storage battery on line in real time and alarming the abnormal state in time.

Description

Technical Field

[0001] The utility model relates to the technical field of battery management, in particular to a remote online capacity verification device and system for a communication battery. Background Art

[0002] Batteries are the primary backup power source for DC systems. During AC outages, they ensure the normal operation of control information, protection, and automatic devices in substations and power plants. Therefore, they are a crucial secondary device in the DC power supply of substations and power plants. The performance and charge / discharge status of batteries directly impact the safe operation of power systems. Battery performance testing is the primary method for verifying battery performance. To ensure battery performance and lifespan, regular battery performance testing is necessary.

[0003] The current method of nuclear capacity discharge used in the power industry is still manual testing equipment, requiring professionals to regularly conduct on-site nuclear capacity testing and discharge on each battery. This includes: fully charging the battery, usually using constant current charging or constant voltage charging, until the battery voltage reaches the design requirements; discharging the battery to below the design voltage, usually using constant current discharge, until the voltage drops to the design requirements; during the discharge process, recording the battery voltage and discharge time to calculate the actual capacity of the battery; comparing the actual capacity with the design capacity to determine whether the battery meets the requirements. Therefore, it can be seen that the traditional manual testing method has a long discharge time, which not only consumes a lot of manpower and time costs, but also cannot avoid safety issues and inaccurate detection caused by manual misoperation during the complicated testing process. In addition, it is impossible to monitor the battery in real time and cannot respond to emergencies in a timely manner.

[0004] Therefore, there is a need for a battery remote online capacity verification device that can monitor the working status of the battery in real time and promptly warn of abnormal conditions. Utility Model Content

[0005] The utility model provides a remote online capacity verification device and system for communication batteries, which are mainly used to solve the problems of traditional manual battery capacity verification, which is time-consuming and labor-intensive, has safety hazards and inaccurate detection, so as to achieve the effect of remote online real-time monitoring of the working status of the battery and timely alarm of abnormal conditions.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0007] A remote online capacity verification device for a communication battery includes a housing, wherein a support frame is provided on the inner side wall of the housing, wherein the support frame is used to fix a constant current source module and a DC / DC module stacked up and down, wherein the constant current source module is used to provide a self-test current for the device, wherein the DC / DC module includes a high-frequency DC / DC boost module, a high-frequency DC / DC constant current charging module, and a monitoring module. The high-frequency DC / DC boost module and the high-frequency DC / DC constant current charging module are connected in parallel, and both adopt an isolated bidirectional DC / DC circuit structure. The monitoring module establishes a bus with the battery and its various detection devices. Communication connection, used for monitoring and controlling the battery; a touch screen, a rectifier and a first contactor are fixedly installed on the bottom of the shell from front to back, and the touch screen is connected to the monitoring module for display and human-computer interaction; the input end of the rectifier is connected to the output end of the AC backup power supply located in the bypass, and its output end is connected to the input end of the battery; the negative pole of the battery is connected to the negative pole of a communication power supply, and its positive pole is connected to the positive pole of the communication power supply through the normally open contact of the first contactor, the high-frequency DC / DC boost module and the high-frequency DC / DC current-stabilizing charging module in sequence.

[0008] A further solution is that a second contactor is fixedly mounted on the bottom of the housing, and a contact switch of the second contactor is connected to the output end of the constant current source module for controlling the opening or closing of the self-test current.

[0009] A further solution is that both the first contactor and the second contactor are DC contactors, the capacity of the first contactor is 400A, and the capacity of the second contactor is 100A.

[0010] A further solution is that the battery is charged and discharged in a floating charge mode, and its positive electrode is connected to the positive electrode of the communication power supply through the normally closed contact of the first contactor, so that the battery can still maintain online core capacity when it is in a floating charge state.

[0011] A further solution is that the monitoring module includes a microprocessor, a signal input / output module and a communication module, and the microprocessor collects monitoring data of a single battery in the battery through the signal input / output module, and collects monitoring data of multiple battery groups in the battery through the communication module.

[0012] A further solution is that the input / output data of the monitoring module includes remote measurement, remote signaling, remote control and remote adjustment.

[0013] The telemetry data includes: input / output current signals, input / output voltage signals and temperature signals of the battery.

[0014] The remote signaling quantity includes: an alarm signal of the battery.

[0015] The remote control quantity includes: a discharge control signal and a charge control signal of the battery.

[0016] The remote adjustment variable includes: a current adjustment signal and a voltage adjustment signal of the battery.

[0017] A further solution is that the discharge current adjustment range of the battery is 0-200A, the input voltage adjustment range is DC40V-DC60V, and the output voltage adjustment range is DC40V-DC60V.

[0018] A remote online capacity verification system for a communication battery comprises a battery, a remote online capacity verification device for a communication battery, a communication power supply, and a load. The negative electrode of the battery is connected to the negative electrode of the communication power supply, and the positive electrode is connected to the positive electrode of the communication power supply via the capacity verification device. The capacity verification device is used for real-time monitoring of the battery and controls the charging and discharging of the battery via a first contactor. The load is connected in parallel to both ends of the communication power supply.

[0019] It can be seen that the present invention has the following beneficial effects:

[0020] 1. The device of this utility model can be placed remotely to control the charge and discharge of batteries, monitor and give fault alarms, avoiding the time-consuming and labor-intensive traditional manual capacity verification of batteries, as well as potential safety hazards and inaccurate detection. It can thus achieve the effect of remote online real-time monitoring of the working status of batteries and timely alarm of abnormal conditions.

[0021] 2. The utility model uses a high-frequency DC / DC constant current charging module to automatically switch the battery to constant current charging after discharge, thereby achieving current limiting charging, effectively preventing the large current shock that occurs when switching to the charging state after discharge, which may cause damage to the battery. After full charging, all devices are bypassed to restore the inherent connection mode of the DC system.

[0022] 3. The utility model displays real-time monitoring data through the touch screen, including battery pack voltage, current and single-cell battery status. The human-machine interface is friendly, and real-time alarm prompts and corresponding protection are given for abnormal conditions of the DC bus and battery, realizing visual management.

[0023] 4. The utility model can remotely control the entire discharge process of the battery pack at 0.1C constant current by controlling the on-off of the main contact of the first contactor with one button, which is safe and energy-saving and avoids manual on-site operation.

[0024] 5. The utility model has a powerful data analysis platform through the data processing module, which can automatically generate various curves and bar charts, making it convenient for users to conduct data analysis and timely identify deteriorated batteries. It also relies on big data to achieve intelligent online activation, and cooperates with autonomous repair fluid to greatly improve battery sulfation and extend service life. Relevant data can be printed and exported, and can be restored in the event of a power outage.

[0025] 6. The battery of the utility model adopts a floating charge and discharge method, and the online state of the battery can be achieved by switching the switch state of the contactor, thereby ensuring that the battery pack can seamlessly supply power to the load at any time.

[0026] 7. The utility model has multiple alarm mechanisms. Through the remote signaling function of the monitoring module, the abnormal alarm signal of the battery is obtained in time, and the battery discharge is stopped in time by controlling the on and off of the first contactor. Moreover, due to the bidirectional isolated DC / DC circuit structure, the isolation transformer used therein can effectively isolate the battery.

[0027] The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is an overall structural diagram of the nuclear capacity device provided by an embodiment of the present utility model;

[0029] Figure 2 This is an internal layout diagram of a nuclear capacity device provided by an embodiment of the present utility model;

[0030] Figure 3 This is a schematic diagram of a core capacity system before core capacity provided by an embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of a core capacity system during discharge provided by an embodiment of the present utility model.

[0032] Figure 5 It is a schematic diagram of a nuclear capacity system after discharge provided by an embodiment of the present utility model.

[0033] The parts list in the attached figure is as follows:

[0034] 10: housing; 20: constant current source module; 30: DC / DC module;

[0035] 40: touch screen; 50: rectifier; 60: first contactor;

[0036] 70: Second contactor; 80: Temperature and humidity sensor;

[0037] 100: Nuclear capacity device; 200: Battery; 300: Communication power supply; 400: Load. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] An embodiment of a remote online capacity verification device for a communication battery

[0040] See also Figure 1-2 The utility model relates to a remote online capacity verification device for a communication battery, comprising a housing 10. A support frame is provided on the inner side wall of the housing 10. The support frame is used to fix a constant current source module 20 and a DC / DC module 30 stacked up and down. The constant current source module 20 is used to provide a self-test current for the device. The DC / DC module 30 includes a high-frequency DC / DC boost module, a high-frequency DC / DC constant current charging module and a monitoring module. The high-frequency DC / DC boost module and the high-frequency DC / DC constant current charging module are connected in parallel, and both adopt an isolated bidirectional DC / DC circuit structure. The monitoring module is connected to the battery 200 and its various detection devices. A bus communication connection is provided for monitoring and controlling the battery 200; a touch screen 40, a rectifier 50 and a first contactor 60 are fixedly installed on the bottom of the housing 10 from front to back, and the touch screen 40 is connected to the monitoring module for display and human-computer interaction; the input end of the rectifier 50 is connected to the output end of the AC backup power supply located in the bypass, and its output end is connected to the input end of the battery 200; the negative pole of the battery 200 is connected to the negative pole of a communication power supply 300, and its positive pole is connected to the positive pole of the communication power supply 300 through the normally open contact of the first contactor 60, the high-frequency DC / DC boost module and the high-frequency DC / DC current-stabilizing charging module in sequence.

[0041] Specifically, the total body height of the core capacity device in this embodiment is only 4U (177mm), and a 7-inch touch screen 40 is used, which is suitable for use in a 19-inch standard cabinet. The 4U body height can minimize the space occupied in the cabinet. The use of a 7-inch touch screen 40 allows the device to have a larger display and operation space while having a smaller body.

[0042] Specifically, handles are provided on the left and right sides of the device of this embodiment to facilitate transportation.

[0043] Specifically, a 3mm thick PC material protective plate is provided at the tail end of the device of this embodiment to ensure the safety of operators during product operation.

[0044] Specifically, the side panels of the housing 10 of this embodiment are provided with heat dissipation holes, and a fan is installed inside to dissipate heat from the internal components. The area of the ventilation and heat dissipation holes is 3176.21mm 2 .

[0045] Specifically, this embodiment uses a high-frequency DC / DC constant current charging module to automatically switch the battery 200 to constant current charging after discharge, thereby achieving current limiting charging, effectively preventing the large current shock that occurs when switching to the charging state after discharge, which may cause damage to the battery 200, and after full charging, all devices are bypassed to restore the inherent connection mode of the DC system.

[0046] Specifically, this embodiment displays real-time monitoring data through the touch screen 40, including the voltage, current and single-cell status of the battery 200 group. The human-machine interface is friendly, and real-time alarm prompts are given for abnormal conditions of the DC bus and the battery 200, and corresponding protection is taken to achieve visual management.

[0047] Specifically, this embodiment can remotely control the entire 0.1C constant current discharge process of the battery pack with one button by controlling the on / off of the main contacts of the first contactor 60, thereby achieving safety, energy conservation, and avoiding manual on-site operation.

[0048] Specifically, this embodiment also includes a data processing module. The data processing module has a powerful data analysis platform that can automatically generate various curves and bar charts to facilitate users to conduct data analysis and timely identify deteriorated batteries. It also relies on big data to achieve intelligent online activation and cooperates with autonomous repair fluid to greatly improve battery sulfation and extend service life. Relevant data can be printed and exported, and can be restored in the event of a power outage.

[0049] Specifically, the battery 200 of this embodiment adopts a floating charge and discharge method, and the online state of the battery 200 can be achieved by switching the switch state of the contactor, thereby ensuring that the battery 200 group can seamlessly supply power to the load 400 at any time.

[0050] Specifically, this embodiment has multiple alarm mechanisms. Through the remote signaling function of the monitoring module, abnormal alarm signals of the battery 200 are obtained in a timely manner, and the discharge of the battery 200 is stopped in a timely manner by controlling the on and off of the first contactor 60. Moreover, due to the bidirectional isolated DC / DC circuit structure, the isolation transformer used therein can effectively isolate the battery 200. In addition, the current, voltage, temperature and other data of the battery 200 are monitored in real time through telemetry data, and an alarm is issued in a timely manner when an abnormality occurs. It has functions such as overvoltage, overtemperature, and islanding protection; and the busbar voltage difference is balanced through charging management to prevent circulation of multiple battery groups.

[0051] In this embodiment, a second contactor 70 is fixedly mounted on the bottom of the housing 10 , and a contact switch of the second contactor 70 is connected to the output end of the constant current source module 20 for controlling the opening or closing of the self-test current.

[0052] In this embodiment, the first contactor 60 and the second contactor 70 are both DC contactors. The capacity of the first contactor 60 is 400A, and the capacity of the second contactor 70 is 100A.

[0053] Specifically, the touch screen 40 of this embodiment also has the following functions:

[0054] Electronic query function: This function allows operation and maintenance personnel to obtain the required information through self-service, effectively reducing the cost of manual query. With simple operations, operation and maintenance personnel can quickly find the data they need, which not only improves efficiency but also reduces the time and manpower required for traditional manual query.

[0055] Interface display: can meet the display needs of data and multiple images; when problems or failures occur, it can display alarm information in a timely and clear manner, and provide multiple solutions through storage history.

[0056] Monitoring Status Display: The touch screen 40 allows users to intuitively view and control various system parameters and status. For example, using buttons on the touch screen 40, users can easily start and stop the system, ensuring that the system operates as expected. This real-time monitoring and adjustment function ensures system stability and efficiency, thereby improving overall performance.

[0057] Alarm Generation and Recording: When the touchscreen 40 detects an abnormal or dangerous situation, it triggers an alarm system and promptly notifies relevant personnel. This immediate feedback mechanism ensures that the problem can be resolved quickly, thereby reducing potential risks. Furthermore, the touchscreen 40 records the alarm generation time and related data, providing a strong basis for subsequent analysis and preventive measures. This recording function not only helps track the root cause of the problem but also helps evaluate the effectiveness of the alarm system.

[0058] Storage system operation information: The touch screen 40 intuitively displays storage system status and performance data, allowing users to quickly understand system operation. Users can also enter user commands or parameters through the touch screen 40 to configure and manage the storage system. This interactive method not only improves work efficiency but also enhances system flexibility.

[0059] In this embodiment, the battery 200 is charged and discharged in a floating charge manner, and its positive electrode is connected to the positive electrode of the communication power supply 300 through the normally closed contact of the first contactor 60, so that the battery 200 can still maintain online core capacity when it is in a floating charge state.

[0060] In this embodiment, the monitoring module includes a microprocessor, a signal input / output module and a communication module. The microprocessor collects monitoring data of a single battery in the battery 200 through the signal input / output module, and collects monitoring data of multiple battery groups in the battery 200 through the communication module.

[0061] Specifically, the signal input / output module of this embodiment includes a switch input unit, a switch output unit, an analog input unit, an analog output unit, etc. The switch input unit is used to collect various switch signals at the battery site; the switch output unit is used to remotely control the charging, discharging, and alarm of the remote battery; the analog input unit is used to collect various analog signals at the battery site, such as the real-time voltage, current signal, and internal resistance during charging and discharging; and the analog output unit is used to output voltage or current regulation signals.

[0062] In this embodiment, the input / output data of the monitoring module includes telemetry, telesignaling, remote control, and remote regulation.

[0063] The telemetry data includes: input / output current signals, input / output voltage signals and temperature signals of the battery 200 .

[0064] The remote signaling quantity includes: an alarm signal of the battery 200 .

[0065] The remote control quantity includes: a discharge control signal and a charge control signal of the battery 200 .

[0066] The remote adjustment variable includes: a current adjustment signal and a voltage adjustment signal of the battery 200 .

[0067] In this embodiment, the discharge current adjustment range of the battery 200 is 0-200A, the input voltage adjustment range is DC40V-DC60V, and the output voltage adjustment range is DC40V-DC60V.

[0068] Specifically, this embodiment further includes a temperature and humidity sensor 80 for measuring the temperature and humidity of the nuclear containment device to ensure normal operation of the equipment.

[0069] An embodiment of a remote online capacity verification system for a communication battery 200

[0070] See also Figure 3-5The remote online capacity-checking system for a communication battery 200 involved in the present invention includes a battery 200, a remote online capacity-checking device for a communication battery 200, a communication power supply 300, and a load 400. The negative pole of the battery 200 is connected to the negative pole of the communication power supply 300, and its positive pole is connected to the positive pole of the communication power supply 300 through the capacity-checking device. The capacity-checking device is used for real-time monitoring of the battery 200 and controls the charging and discharging of the battery 200 through a first contactor 60. The load 400 is connected in parallel to both ends of the communication power supply 300.

[0071] Specifically, the system core capacity of this embodiment includes the following process:

[0072] Before the core capacity is started: the battery 200 is in a floating charge state. At this time, the normally closed contactor KO of the first contactor 60 is closed, the battery 200 is directly online, and the communication power supply performs floating charge on the battery 200.

[0073] When discharging starts: the coil of the first contactor 60 is energized, and its normally closed contactor KO is opened. The system boosts the voltage of the battery 200 through the high-frequency DC / DC boost circuit module to supply power to the load 400 until the discharge stop condition of the battery 200 is reached;

[0074] After the discharge is completed: it automatically switches to steady-current charging. At this time, the high-frequency DC / DC steady-current charging module in the system starts working, and the system automatically adjusts the charging current to the set value and stabilizes the current; when the charging current is less than the floating charge current, the charging is terminated, and the battery 200 switches to the bypass AC power supply for floating charging through the rectifier 50. At this time, the battery 200 is directly restored online; when the battery 200 enters the floating charge state, the normally closed contactor KO is closed.

[0075] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A remote online capacity verification device for a communication battery, characterized in that: include: The housing has a support frame on the inner side wall thereof, and the support frame is used to fix the constant current source module and the DC / DC module stacked up and down, and the constant current source module is used to provide a self-test current for the device, and the DC / DC module includes a high-frequency DC / DC boost module, a high-frequency DC / DC constant current charging module and a monitoring module, and the high-frequency DC / DC boost module and the high-frequency DC / DC constant current charging module are connected in parallel, and both adopt an isolated bidirectional DC / DC circuit structure, and the monitoring module establishes a bus communication connection with the battery and its various detection devices, for the Monitoring and control of the battery; a touch screen, a rectifier and a first contactor are fixedly installed on the bottom of the shell from front to back in sequence, and the touch screen is connected to the monitoring module for display and human-computer interaction; the input end of the rectifier is connected to the output end of the AC backup power supply located in the bypass, and its output end is connected to the input end of the battery; the negative pole of the battery is connected to the negative pole of a communication power supply, and its positive pole is connected to the positive pole of the communication power supply through the normally open contact of the first contactor, the high-frequency DC / DC boost module and the high-frequency DC / DC current-stabilizing charging module in sequence.

2. The remote online capacity verification device for communication batteries according to claim 1, characterized in that: A second contactor is also fixedly mounted on the bottom of the housing, and a contact switch of the second contactor is connected to the output end of the constant current source module for controlling the opening or closing of the self-test current.

3. The remote online capacity verification device for a communication battery according to claim 2, characterized in that: The first contactor and the second contactor are both DC contactors. The capacity of the first contactor is 400A, and the capacity of the second contactor is 100A.

4. The remote online capacity verification device for a communication battery according to claim 3, characterized in that: The battery is charged and discharged in a floating charge mode, and its positive electrode is connected to the positive electrode of the communication power supply through the normally closed contact of the first contactor, so as to maintain the online core capacity when the battery is in a floating charge state.

5. The remote online capacity verification device for communication batteries according to claim 1, characterized in that: The monitoring module includes a microprocessor, a signal input / output module and a communication module. The microprocessor collects monitoring data of a single battery in the battery through the signal input / output module, and collects monitoring data of multiple battery groups in the battery through the communication module.

6. The remote online capacity verification device for a communication battery according to claim 5, characterized in that: The input / output data of the monitoring module includes remote measurement, remote signaling, remote control and remote adjustment; The remote measurement includes: input / output current signal, input / output voltage signal and temperature signal of the battery; The remote signaling quantity includes: an alarm signal of the battery; The remote control quantity includes: a discharge control signal and a charge control signal of the battery; The remote adjustment variable includes: a current adjustment signal and a voltage adjustment signal of the battery.

7. The remote online capacity verification device for a communication battery according to claim 6, characterized in that: The discharge current adjustment range of the battery is 0-200A, the input voltage adjustment range is DC40V-DC60V, and the output voltage adjustment range is DC40V-DC60V.

8. A remote online capacity verification system for communication batteries, characterized in that: include: A battery, a remote online capacity-converting device for a communication battery as described in any one of claims 1 to 7, a communication power supply, and a load, wherein the negative pole of the battery is connected to the negative pole of the communication power supply, and the positive pole is connected to the positive pole of the communication power supply through the capacity-converting device, the capacity-converting device is used for real-time monitoring of the battery and controlling the charging and discharging of the battery through a first contactor, and the load is connected in parallel at both ends of the communication power supply.

Images