Intelligent air switch system for base station storage battery

Abstract

The utility model belongs to the technical field of electric appliance switches, and particularly relates to an intelligent air switch system for a base station storage battery, which comprises a detection module, a control module and a communication module. The detection module is used for monitoring a detection signal in a circuit in real time and transmitting the detection signal to the control module through the communication module; the control module is used for receiving the detection signal and performing corresponding operation according to preset logic; detection, control, communication, bidirectional DC / DC conversion and various protection functions are integrated, and intelligent management of power supply of a base station storage battery and protection of load equipment are realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrical switches, and in particular relates to an intelligent air switch system for a base station battery. Background Art

[0002] Lead-acid batteries are a critical operating resource for communication base stations, primarily responsible for backup power. In modern base station battery-powered systems, traditional air conditioners (ICBs) are limited in functionality, often providing only basic overcurrent and overvoltage protection. Especially in base station applications, which require extremely stable power supply, battery instability or voltage fluctuations can lead to insufficient response and accuracy in traditional switches, causing the switching system to abruptly cut off power, resulting in equipment failure, data loss, or communication interruption. Utility Model Content

[0003] In order to solve the technical problems in the above-mentioned background technology that the instability or voltage fluctuation of the battery may lead to insufficient response mode and accuracy of the traditional switch, the utility model provides an intelligent air switch system for base station batteries; it integrates control and multiple protection functions in one, and can protect load electrical equipment by gradually increasing or decreasing the voltage by combining a bidirectional DC / DC converter, rather than immediately cutting off the power supply, to avoid sudden interruption of the electrical equipment.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] An intelligent air switch system for a base station battery includes a detection module, a control module, and a communication module;

[0006] The detection module is used to monitor the detection signal in the circuit in real time and transmit the detection signal to the control module through the communication module;

[0007] The detection module includes a voltage sensor and a current sensor;

[0008] The control module is used to receive the detection signal and perform corresponding operations according to the preset logic;

[0009] The control module includes a microcontroller, a bidirectional DC / DC converter and an air switch;

[0010] The communication module is used to transmit signals between modules through the communication protocol;

[0011] The voltage sensor is connected in parallel at both ends of the load for circuit overvoltage detection;

[0012] The current sensor is connected in series to the load circuit for circuit overcurrent detection;

[0013] The microcontroller is used to receive detection signals from various sensors and output decision instructions;

[0014] The bidirectional DC / DC converter is connected between the battery and the load, and is used to adjust the output voltage of the battery in the step-up or step-down mode of the bidirectional DC / DC converter;

[0015] The air switch is connected to the input end of the load and is used to receive the decision instruction of the microcontroller and perform corresponding opening and closing operations.

[0016] Preferably, the bidirectional DC / DC converter includes a MOSFET field effect transistor, a Schottky diode, an inductor and a capacitor;

[0017] The MOSFET field-effect tube is used as a switch in a bidirectional DC / DC converter to perform switching between boost and buck; the Schottky diode is used to protect the reverse current and prevent current backflow;

[0018] The inductor is used for energy storage in the bidirectional DC / DC converter; the capacitor is used for smoothing voltage fluctuations in the bidirectional DC / DC converter and reducing ripple voltage.

[0019] Preferably, the communication protocol includes RS485, CAN or Wi-Fi protocol;

[0020] Preferably, the voltage sensor is a Hall effect voltage sensor, specifically LEM LV 25-P or Melexis MLX91206.

[0021] Preferably, the current sensor is a magnetoresistive current sensor, specifically NVE AAL002-10E or Sensitec CMS2000.

[0022] Preferably, the microcontroller is a buck-boost controller with bidirectional operation, specifically a TPS55340 controller or a LM25119 controller.

[0023] Preferably, the detection module further includes a temperature sensor; a plurality of temperature sensors are provided, distributed next to the battery, the bidirectional DC / DC device and the air switch, for circuit overtemperature detection.

[0024] Preferably, it also includes a display screen, which is connected to the microcontroller and is used to display the voltage, current, temperature value data and fault information processed by the microcontroller in real time.

[0025] Beneficial effects of the utility model:

[0026] 1. The air switch system of this utility model integrates detection, control, communication, bidirectional DC / DC conversion and multiple protection functions, aiming to realize intelligent management of base station battery power supply and protect load equipment.

[0027] 2. If an overvoltage or overcurrent signal is detected, the microcontroller first uses a bidirectional DC / DC converter to precisely regulate the battery voltage, activating either step-up or step-down mode. By adjusting the output voltage, the load is protected from voltage fluctuations, preventing sudden power outages in the load circuit caused by battery voltage and current fluctuations. If the voltage is too high to be regulated by the converter, the microcontroller instructs the circuit breaker to cut off the supply voltage.

[0028] 3. The air switch system of the utility model monitors the voltage, current and temperature of the system in real time to ensure the safe operation of the load circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0030] Figure 1 This is a structural block diagram of the air switch system of the utility model.

[0031] Figure 2 This is a simplified connection diagram of the air switch system of the utility model.

[0032] Figure 3 This is a schematic diagram of the circuit principle of the air switch system of this utility model.

[0033] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0034] 1-Detection module, 11-Voltage sensor, 12-Current sensor, 2-Control module, 21-Microcontroller, 22-Bidirectional DC / DC converter, 23-Air switch, 3-Communication module. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Example 1

[0037] See also Figure 1-Figure 3As shown, an intelligent air switch system for base station batteries includes a detection module 1, a control module 2 and a communication module 3; it integrates detection, control, communication, bidirectional DC / DC conversion and multiple protection functions, aiming to achieve intelligent management of base station battery power supply and protect load equipment.

[0038] The detection module 1 is used to monitor the detection signal in the circuit in real time and transmit the detection signal to the control module 2 through the communication module 3;

[0039] The detection module 1 includes a voltage sensor 11 and a current sensor 12;

[0040] Control module 2 is used to receive detection signals and perform corresponding operations according to preset logic. Control module 2 is the core of the system. It is mainly responsible for making logical judgments based on the signals from detection module 1, achieving precise regulation of the battery voltage through the bidirectional DC / DC converter 22, and executing corresponding step-up and step-down measures to avoid sudden power supply interruptions to the load circuit caused by fluctuations in battery voltage and current.

[0041] The control module 2 includes a microcontroller 21, a bidirectional DC / DC converter 22 and an air switch 23;

[0042] The communication module 3 is used to transmit signals between modules through the communication protocol;

[0043] The voltage sensor 11 is connected in parallel across the load for circuit overvoltage detection; when the load voltage exceeds a set safety range, an overvoltage signal is transmitted to the control module.

[0044] The current sensor 12 is connected in series to the load circuit for circuit overcurrent detection; when the current exceeds the set safety value (ie overcurrent), an overcurrent signal is generated and sent to the control module.

[0045] The microcontroller 21 is used to receive detection signals from various sensors and output decision instructions; if an overvoltage or overcurrent signal is detected, the microcontroller 21 first accurately controls the battery voltage through the bidirectional DC / DC converter 22; if the voltage is too high to be adjusted through conversion, the microcontroller 21 will instruct the air switch 23 to perform a cut-off operation.

[0046] The bidirectional DC / DC converter 22 is connected between the battery and the load and is used to regulate the battery's output voltage in either its boost or buck mode. The converter can activate the boost or buck mode if it detects that the battery voltage is too high or too low. By regulating the output voltage, the load is protected from voltage fluctuations.

[0047] Optionally, the bidirectional DC / DC converter 22 includes a MOSFET field effect transistor, a Schottky diode, an inductor and a capacitor;

[0048] The MOSFET field-effect transistors (FETs) are used as switches in the bidirectional DC / DC converter 22, switching between step-up and step-down voltages. The bidirectional DC / DC converter 22 requires at least two MOSFETs for this switching. Models such as the IRLZ44N and IRF540 are used to reduce losses and improve conversion efficiency. The MOSFET's source is grounded, and its drain is connected to one end of the inductor. Its gate is controlled by a PWM (pulse-width modulation) signal from the microcontroller 21.

[0049] The Schottky diode, such as a 1N5822 diode, is used to prevent reverse current flow and backflow. The anode of the Schottky diode is connected to the other end of the inductor, and the cathode is connected to the load, protecting components in the load circuit.

[0050] The inductor is used for energy storage in the bidirectional DC / DC converter 22; it determines the DC / DC converter's energy storage capacity and response time. One end of the inductor is connected to the drain of the MOSFET, and the other end is connected to a Schottky diode. Energy is transferred between the power supply, the MOSFET, and the load through the inductor.

[0051] The capacitor is used to smooth voltage fluctuations and reduce ripple voltage in the bidirectional DC / DC converter 22. The capacitor is connected in parallel across the load, that is, between the inductor output and the load.

[0052] Specifically, in boost mode, the MOSFET switches at high speed, the inductor stores electrical energy, the Schottky diode conducts when the MOSFET is turned off, transferring the stored energy to the load, and the capacitor smoothes the output voltage.

[0053] In buck mode, the duty cycle of the MOSFET switch regulates the output voltage, the energy released by the inductor enters the load through the Schottky diode, and the capacitor is still responsible for smoothing the output fluctuations.

[0054] Optionally, the air switch 23 is connected to the input terminal of the load to receive the decision instructions from the microcontroller 21 and perform the corresponding opening and closing operations. In the intelligent air switch system of the present invention, under normal circumstances, the air switch 23 will directly cut off the circuit to protect the load only when the bidirectional DC / DC converter 22 cannot regulate the battery output voltage or detects a severe overvoltage, overcurrent, or short circuit.

[0055] The working process of the air switch system of the present invention is as follows:

[0056] Overvoltage protection: When the battery output voltage is too high, the system instructs the bidirectional DC / DC converter 22 to enter step-down mode to prevent damage to the device. If the voltage is too high to be regulated by conversion, the circuit breaker 23 will perform a cut-off operation.

[0057] Overcurrent protection: When overcurrent is detected, the air switch 23 will perform a disconnection operation to prevent large current from damaging the circuit or equipment.

[0058] Boost / buck control: When the battery voltage is low, the boost function of the bidirectional DC / DC converter 22 is used to ensure continuous power supply to the load; when the voltage is high, the output is stabilized by bucking.

[0059] As an optional embodiment, the communication protocol includes RS485, CAN or Wi-Fi protocol;

[0060] As an optional embodiment, the voltage sensor 11 is a Hall effect voltage sensor, specifically LEMLV 25-P or Melexis MLX91206.

[0061] As an optional embodiment, the current sensor 12 is a magnetoresistive current sensor, specifically NVEAAL002-10E or Sensitec CMS2000.

[0062] As an optional embodiment, the microcontroller uses a buck-boost controller with bidirectional operation, specifically a TPS55340 controller or a LM25119 controller.

[0063] Example 2

[0064] Based on Example 1, an intelligent air switch system for a base station battery includes detection module 1, which further includes temperature sensors. Multiple temperature sensors are provided, distributed near the battery, bidirectional DC / DC device, and air switch 23, for circuit overtemperature detection. These sensors monitor not only ambient temperature but also internal heating, preventing malfunctions caused by overheating after prolonged operation.

[0065] The device also includes a display screen, which is connected to the microcontroller 21 and is used to display the voltage, current, temperature value data and fault information processed by the microcontroller 21 in real time.

[0066] The air switch system also has local and remote operation functions. Maintenance personnel can use mobile devices or computers to monitor the power consumption of the base station at any time and perform remote control, thereby improving the energy management and operational efficiency of the base station.

[0067] In the optional embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, which may be electrical, mechanical or other forms.

[0068] The above content is merely an example and explanation of the structure of the present utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should fall within the scope of protection of the present utility model.

Claims

1. An intelligent air switch system for base station batteries, characterized by: It includes detection module, control module and communication module; The detection module is used to monitor the detection signal in the circuit in real time and transmit the detection signal to the control module through the communication module; The detection module includes a voltage sensor and a current sensor; The control module is used to receive the detection signal and perform corresponding operations according to the preset logic; The control module includes a microcontroller, a bidirectional DC / DC converter and an air switch; The communication module is used to transmit signals between modules through the communication protocol; The voltage sensor is connected in parallel at both ends of the load for circuit overvoltage detection; The current sensor is connected in series to the load circuit for circuit overcurrent detection; The microcontroller is used to receive detection signals from various sensors and output decision instructions; The bidirectional DC / DC converter is connected between the battery and the load, and is used to adjust the output voltage of the battery in the step-up or step-down mode of the bidirectional DC / DC converter; The air switch is connected to the input end of the load and is used to receive the decision instruction of the microcontroller and perform corresponding opening and closing operations.

2. The intelligent air switch system for base station batteries according to claim 1 is characterized in that: The voltage sensor is a Hall effect voltage sensor, specifically LEM LV 25-P or Melexis MLX91206.

3. The intelligent air switch system for base station batteries according to claim 1 is characterized in that: The current sensor is a magnetoresistive current sensor, specifically NVE AAL002-10E or Sensitec CMS2000.

4. The intelligent air switch system for base station batteries according to claim 1, characterized in that: The microcontroller is a buck-boost controller with bidirectional operation, specifically a TPS55340 controller or a LM25119 controller.

5. The intelligent air switch system for base station batteries according to claim 1, characterized in that: The bidirectional DC / DC converter includes a MOSFET field effect tube, a Schottky diode, an inductor and a capacitor; The MOSFET field-effect tube is used as a switch in a bidirectional DC / DC converter to perform switching between boost and buck; the Schottky diode is used to protect the reverse current and prevent current backflow; The inductor is used for energy storage in the bidirectional DC / DC converter; the capacitor is used for smoothing voltage fluctuations in the bidirectional DC / DC converter and reducing ripple voltage.

6. The intelligent air switch system for base station batteries according to claim 1, characterized in that: The detection module also includes a temperature sensor; there are several temperature sensors distributed next to the battery, bidirectional DC / DC device and air switch, which are used for circuit overtemperature detection.

7. The intelligent air switch system for base station batteries according to any one of claims 1 to 6, characterized in that: The device also includes a display screen, which is connected to the microcontroller and is used to display voltage, current, temperature value data and fault information processed by the microcontroller in real time.

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