Communication base station storage battery online capacity checking device and control method thereof

Abstract

The invention discloses a communication base station storage battery online capacity checking device, which comprises a battery PACK, an AC / DC module and a detection control unit, and is characterized in that the battery PACK comprises a capacity checking module, a bypass switch module and a storage battery, and the capacity checking module at least comprises a DC / DC module and a capacity checking enabling switch; the detection control unit at least comprises a microcontroller MCU and a communication and interface module, and is used for monitoring the bus voltage of the system and the voltage of the storage battery in real time and controlling the on / off of the bypass switch module and the capacity check enable switch according to the monitoring result; the input end of the DC / DC module is connected with a storage battery, and the output end of the DC / DC module is connected to a system bus through the capacity checking enable switch and the bypass switch module. According to the invention, remote intelligent operation and maintenance can be realized, operation and maintenance personnel do not need to operate on site through a remote one-key capacity checking function, and compared with a traditional manual capacity checking mode, more than 80% of labor cost can be saved, the operation and maintenance efficiency can be remarkably improved, and the operation cost of enterprises can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of communication power supplies, and in particular to an online capacity verification device for a communication base station battery and a control method thereof. Background Art

[0002] In modern communications networks, base stations serve as core nodes for signal transmission and processing, and their stability directly impacts network service quality. Batteries, which serve as backup power sources for base stations during utility power outages, are crucial for their performance. Regular battery capacity verification (checking remaining battery capacity) is a key measure to determine whether a battery meets operational requirements. The basic principle is to fully charge the battery, then discharge it for a specified period of time. By calculating the amount of energy released during this period, the battery's actual capacity can be accurately assessed.

[0003] Currently, there are two main methods for verifying the capacity of batteries in communication base stations. The traditional manual on-site discharge test requires technicians to visit the base station, manually operate the discharge process, and monitor and record data throughout the entire process. This method is not only labor-intensive and resource-intensive, but also time-consuming and inefficient. It cannot meet the testing needs of large-scale base station batteries, and its operation and maintenance costs remain high.

[0004] With technological advancements, online capacity-reinforced battery technology has emerged. This approach rapidly dissipates battery power as heat by connecting high-power resistors. While this approach reduces manual labor and improves operational convenience, the continuous operation of high-power resistors generates significant heat, leading to significant energy waste and the need for additional heat dissipation devices, increasing equipment costs and maintenance difficulties. Furthermore, high temperatures can negatively impact the performance and lifespan of batteries and peripheral equipment.

[0005] Therefore, developing an efficient, energy-saving and safe communication base station battery core capacity technology to solve the many problems existing in the existing methods has important practical significance for improving the operation and maintenance efficiency of communication base stations and reducing operating costs. Summary of the Invention

[0006] The purpose of the present invention is to solve the above problems and provide an online battery capacity verification device for a communication base station and a control method thereof.

[0007] The objectives of the present invention are achieved through the following technical solutions: A communication base station battery online capacity control device includes a battery pack, an AC / DC power supply and a detection control unit, wherein the battery pack includes a capacity control module, a bypass switch module and a battery, and the capacity control module includes at least a DC / DC module and a capacity control enable switch; the detection control unit includes at least a microcontroller MCU and a communication and interface module, which are used to monitor the system bus voltage and battery voltage in real time and control the opening and closing of the bypass switch and the capacity control enable switch according to the monitoring results; the input end of the DC / DC module is connected to the battery, and the output end thereof is connected to the system bus after passing through the capacity control enable switch and the bypass switch module.

[0008] Furthermore, the output voltage range of the DC / DC module is 0-16V, and its maximum output current is ≥ 0.1C value of the rated capacity of the battery.

[0009] As a preferred embodiment, the core capacity enabling switch adopts a double-contact structure of break-before-make, and its switching time is ≤10ms.

[0010] The bypass switch module at least includes a discharge switch and a charge switch, and the discharge switch and the charge switch are connected in series between the system bus and the core capacity enabling switch.

[0011] In order to facilitate the real-time reception of external communication instructions, the device also includes a communication module. The detection control unit receives remote instructions through the communication module and controls the operation of the core capacity module according to the remote instructions.

[0012] A control method for an online battery capacity verification device for a communication base station comprises the following steps: S1, the detection control unit detects the system bus voltage in real time and determines the charging and discharging status of the system; S2: When the system is in floating charge state, the battery is fully charged and the mains is online, it enters the nuclear capacity preparation mode; S3: The detection control unit receives a remote instruction or triggers a timed verification condition and starts the verification program; S4. The detection control unit turns off the charging switch and turns on the core capacity enable switch, so that the DC / DC module enters the working state. The output end of the DC / DC module and the battery are connected in series to form a series power supply system, and output power to the outside according to the power relationship between the load power and the series power supply system; S5. When the battery power drops to a certain value, the discharged power is counted and the remaining capacity of the battery pack is calculated; S6. When the capacity check procedure is completed, the detection control unit disconnects the capacity check enable switch and closes the charging switch, the battery is charged normally, and the normal operating logic is restored.

[0013] Furthermore, in the step S4 of "outputting power based on the power relationship between the load power and the series power supply system", the power relationship between the load power and the series power supply system is: when the load power is greater than the power of the series power supply system, the DC / DC module outputs power to the outside in a constant current manner; when the load power is less than the power of the series power supply system, the DC / DC module outputs power to the outside in a constant voltage manner.

[0014] At the same time, an overvoltage protection mechanism and an undervoltage protection mechanism are also provided in the microcontroller MCU. The overvoltage protection mechanism means that when the system bus voltage is greater than the preset upper threshold voltage, the core capacity enable switch is immediately turned off and the bypass state is entered; the undervoltage protection mechanism means that when the battery voltage is less than the preset lower threshold voltage, the core capacity enable switch is immediately turned off and the bypass state is entered.

[0015] A temperature protection mechanism is also provided in the microcontroller MCU; the temperature protection mechanism means that when the housing temperature of the device is greater than 60°C, the fan is started; when the housing temperature is greater than 70°C, the over-temperature protection is triggered and the system automatically resets. After the reset, the DC / DC module is in a bypass state.

[0016] A communication watchdog mechanism is also provided in the microcontroller MCU. The communication watchdog mechanism means that when the system times out for 15 minutes without any response, it will automatically reset. After the reset, the DC / DC module will be in a bypass state.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects: (1) The present invention can realize remote intelligent operation and maintenance. Through the remote one-key capacity verification function, the operation and maintenance personnel do not need to operate on-site. Compared with the traditional manual capacity verification method, it can save more than 80% of labor costs, significantly improve operation and maintenance efficiency, and reduce enterprise operating costs.

[0018] (2) The nuclear capacity process of the present invention does not require additional discharge loads, abandoning the traditional high-energy-consuming discharge mode, and can save energy by 60% compared with similar products. It not only reduces energy consumption, but also reduces the heat dissipation requirements of equipment operation, achieving green and low-carbon operation and maintenance.

[0019] (3) The present invention supports online capacity calibration of storage batteries, with the detection error controlled within 5%. It can accurately assess the battery status, provide reliable data support for the power management of communication base stations, and avoid the risk of equipment failure due to misjudgment of capacity.

[0020] (4) The output voltage range of the DC / DC module in the present invention is 0 to 16V, and the maximum output current is ≥ 0.1C value of the rated capacity of the battery. It can automatically switch between constant current and constant voltage output modes according to the relationship between the load power and the power of the series power supply system. Therefore, whether it is a high-power load or a low-power load scenario, it can ensure stable power supply, improve the adaptability of the device to different loads and the power supply reliability, and realize flexible output adjustment and adaptability to the needs of various loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the system topology of the present invention.

[0022] Figure 2 Schematic diagram of the control method of the present invention.

[0023] The reference numerals in the above drawings are: 1—Battery PACK, 2—AC / DC module, 3—Core capacity module, 4—Battery, 5—Bypass switch module, 31—DC / DC module, 32—Core capacity enable switch, 51—Discharge switch, 52—Charge switch. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below with reference to the examples, but the embodiments of the present invention are not limited thereto.

[0025] Example

[0026] like Figure 1 As shown, the communication base station battery online capacity verification device described in this embodiment, hereinafter collectively referred to as the device, includes components such as a battery PACK1, an AC / DC module 2, a detection control unit, and a communication module.

[0027] The battery pack 1 is a complete and ready-to-use battery module formed by combining single batteries (such as battery cells) in series and parallel, and equipped with necessary structural parts and electronic components (such as battery management system BMS, protection circuit, etc.). It includes a core capacity module 3, a bypass switch module 5 and a battery 4.

[0028] The core capacity module 3 is to accurately detect and calibrate the actual capacity of the battery 4 without interrupting the normal power supply of the base station. The core capacity module 3 in this embodiment includes at least a DC / DC module 31 and a core capacity enable switch 32. Among them, the DC / DC module 31 is the core component of the core capacity module 3, and its function is to realize the power conversion and intelligent control between the battery 4 and the system bus, ensuring that the normal power supply of the base station can be maintained and the capacity of the battery 4 can be accurately detected during the core capacity process. The output voltage range of the DC / DC module 31 is 0~16V, and its maximum output current is ≥0.1C value of the rated capacity of the battery. The 0.1C value is used in the field of batteries to characterize the charge and discharge current of the battery, wherein C represents the charge and discharge rate of the battery, which is a relative unit; 0.1C means that the charge and discharge current is one tenth of the rated capacity of the battery.

[0029] The core capacity enabling switch 32 is the actuator of the core capacity module 3, controlling the initiation and exit of core capacity mode and ensuring uninterrupted system bus power supply during the switching process. To ensure accurate operation of the present invention, the core capacity enabling switch 32 preferably adopts a double-contact structure with a break-before-make mechanism, and its switching time is ≤10ms.

[0030] The detection and control unit monitors the system bus voltage and battery 4 voltage in real time and controls the opening and closing of the bypass switch module 5 and the core-capacity enabling switch 32 based on the monitoring results. The detection and control unit includes at least a microcontroller (MCU), a data acquisition module, a voltage detection circuit, a current detection circuit, a temperature detection circuit, sensors, and a communication and interface module. During connection, the input of the DC / DC module 31 is connected to the positive terminal of the battery 4, while its output is connected to the system bus through the core-capacity enabling switch 32 and the bypass switch module 5.

[0031] The bypass switch module 5 is used to switch between the core capacity mode and the normal charging mode, ensuring that the battery 4 operates safely and stably under different operating conditions. The bypass switch module 5 includes at least a discharge switch 51 and a charge switch 52, which are connected in series between the system bus and the core capacity enabling switch 32.

[0032] In order to facilitate the real-time reception of external control instructions, a communication module is further provided in the device. The detection control unit receives remote instructions through the communication module and controls the operation of the core capacity module according to the remote instructions.

[0033] The control method flow of the above device is as follows Figure 2 As shown, it includes the following steps: S1. The detection control unit detects the system bus voltage in real time and determines the system's charge and discharge status. The charge and discharge status here refers to the battery's charge and discharge status, which are common operating modes in battery management.

[0034] S2: When the system is in float charge mode, the battery is fully charged, and the utility is online, it enters the reserve capacity mode. The float charge mode here refers to the state where the battery continues to charge at a low current after being fully charged to compensate for self-discharge losses.

[0035] S3. The detection control unit receives a remote command or triggers a timed capacity verification condition, initiating the capacity verification process. After the detection control unit provides real-time feedback on the battery status to back-end control personnel via the communication module, the back-end control personnel can issue control commands as needed to remotely control the device and initiate the capacity verification process. Alternatively, the detection control unit can automatically initiate the capacity verification process upon receiving a preset timed capacity verification condition.

[0036] S4. The detection control unit disconnects the charging switch and closes the core capacity enable switch, so that the DC / DC module enters the working state. The output end of the DC / DC module and the battery are connected in series to form a series power supply system, and output power to the outside according to the power relationship between the load power and the series power supply system.

[0037] The power output described here is based on the relationship between the load power and the power of the series power supply system. Specifically, when the load power is greater than the power of the series power supply system, the DC / DC module outputs power at a constant current; when the load power is less than the power of the series power supply system, the DC / DC module outputs power at a constant voltage.

[0038] S5. When the battery power drops to a certain value, the discharged power is counted and the remaining capacity of the battery pack is calculated.

[0039] S6. When the capacity check procedure is completed, the detection control unit disconnects the capacity check enable switch and closes the charging switch, the battery is charged normally, and the normal operating logic is restored.

[0040] To ensure the normal operation of this embodiment, the microcontroller MCU of the detection control unit is provided with at least an overvoltage protection mechanism, an undervoltage protection mechanism, a temperature protection mechanism and a communication watchdog mechanism.

[0041] The overvoltage protection mechanism immediately shuts off the core capacitor enable switch and enters bypass mode when the system bus voltage exceeds a preset upper threshold voltage. The undervoltage protection mechanism immediately shuts off the core capacitor enable switch and enters bypass mode when the battery voltage falls below a preset lower threshold voltage. The upper threshold voltage is preferably set to 60V, while the lower threshold voltage is preferably set to 43.2V. Both the upper and lower threshold voltages can be set by the user as needed.

[0042] The temperature protection mechanism activates the fan when the device's housing temperature exceeds 60°C. Overtemperature protection is triggered when the housing temperature exceeds 70°C, triggering an automatic system reset. After the reset, the DC / DC module is placed in bypass mode. The housing temperature can also be set by the user.

[0043] The communication watchdog mechanism means that when the system times out for 15 minutes without any response, it will automatically reset, and after the reset, the DC / DC module will be in the bypass state.

[0044] As described above, the present invention can be realized at a high level.

Claims

1. A communication base station battery online capacity verification device, characterized in that: The invention comprises a battery pack (1), an AC / DC module (2) and a detection control unit, wherein the battery pack (1) comprises a core capacity module (3), a bypass switch module (5) and a battery (4), and the core capacity module (3) comprises at least a DC / DC module (31) and a core capacity enabling switch (32); the detection control unit comprises at least a microcontroller MCU and a communication and interface module, which are used to monitor the system bus voltage and the battery (4) voltage in real time, and control the opening and closing of the bypass switch module (5) and the core capacity enabling switch (32) according to the monitoring results; the input end of the DC / DC module (31) is connected to the battery (4), and the output end thereof is connected to the system bus through the core capacity enabling switch (32) and the bypass switch module (5).

2. The online battery capacity verification device for a communication base station according to claim 1, characterized in that: The output voltage range of the DC / DC module (31) is 0-16V, and its maximum output current is ≥ 0.1C value of the rated capacity of the battery.

3. The online battery capacity verification device for a communication base station according to claim 2, characterized in that: The core capacity enabling switch (32) adopts a double-contact structure of breaking first and making later, and its switching time is ≤10ms.

4. The online battery capacity verification device for a communication base station according to claim 2, characterized in that: The bypass switch module (5) comprises at least a discharge switch (51) and a charge switch (52), and the discharge switch (51) and the charge switch (52) are connected in series between the system bus and the core capacity enabling switch (32).

5. The online battery capacity verification device for a communication base station according to claim 2 further includes a communication module, and the detection control unit receives remote instructions through the communication module and controls the operation of the capacity verification module according to the remote instructions.

6. A control method for an online battery capacity verification device for a communication base station according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, the detection control unit detects the system bus voltage in real time and determines the charging and discharging status of the system; S2: When the system is in floating charge state, the battery is fully charged and the mains is online, it enters the nuclear capacity preparation mode; S3: The detection control unit receives a remote instruction or triggers a timed verification condition and starts the verification program; S4. The detection control unit turns off the charging switch and turns on the core capacity enable switch, so that the DC / DC module enters the working state. The output end of the DC / DC module and the battery are connected in series to form a series power supply system, and output power to the outside according to the power relationship between the load power and the series power supply system; S5. When the battery power drops to a certain value, the discharged power is counted and the remaining capacity of the battery pack is calculated; S6. When the capacity check procedure is completed, the detection control unit disconnects the capacity check enable switch and closes the charging switch, the battery is charged normally, and the normal operating logic is restored.

7. A control method for an online battery capacity verification device for a communication base station according to claim 6, characterized in that: In step S4, in the "outputting power based on the relationship between the load power and the power of the series power supply system", the relationship between the load power and the power of the series power supply system is: when the load power is greater than the power of the series power supply system, the DC / DC module outputs power at a constant current; when the load power is less than the power of the series power supply system, the DC / DC module outputs power at a constant voltage.

8. The control method of the online battery capacity verification device for a communication base station according to claim 7, characterized in that: The microcontroller MCU is also provided with an overvoltage protection mechanism and an undervoltage protection mechanism. The overvoltage protection mechanism means that when the system bus voltage is greater than a preset upper threshold voltage, the core capacitor enable switch is immediately turned off and the system enters a bypass state; the undervoltage protection mechanism means that when the battery voltage is less than a preset lower threshold voltage, the core capacitor enable switch is immediately turned off and the system enters a bypass state.

9. The control method of the online battery capacity verification device for a communication base station according to claim 7, characterized in that: A temperature protection mechanism is also provided in the microcontroller MCU; the temperature protection mechanism means that when the housing temperature of the device is greater than 60°C, the fan is started; when the housing temperature is greater than 70°C, the over-temperature protection is triggered and the system automatically resets. After the reset, the DC / DC module is in a bypass state.

10. The control method of the online battery capacity verification device for a communication base station according to claim 7, characterized in that: A communication watchdog mechanism is also provided in the microcontroller MCU. The communication watchdog mechanism means that when the system times out for 15 minutes without any response, it will automatically reset. After the reset, the DC / DC module will be in a bypass state.

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