A voltage limiting device in an aircraft battery starter vehicle

Abstract

This utility model discloses a voltage limiting device in an aviation battery starter vehicle, relating to the field of aviation power technology. It includes an aviation battery and a microcontroller. A power regulator is connected in series on one side of the aviation battery. The power regulator acts as a variable resistor, controlling the voltage drop by adjusting its conduction level. A series inductor is provided on one side of the power regulator, electrically connected to it. A filter capacitor is installed on the side of the series inductor. The device comprises a power regulator, a high-precision voltage sensor, a microcontroller, and an electromagnetic relay. The power regulator acts as a variable resistor, controlling the voltage drop by adjusting its conduction level. The high-precision voltage sensor monitors the output voltage in real time. When the detected voltage exceeds a set threshold, the microcontroller drives the power regulator to increase the voltage drop, stabilizing the output voltage within the standard range. The device features a fast response speed.

Description

Technical Field

[0001] This utility model relates to the field of aviation power technology, and in particular to a voltage limiting device in an aviation battery starter vehicle. Background Technology

[0002] The aviation battery starter vehicle is an important component of aviation ground support equipment, used to provide starting power for aircraft engines or auxiliary power units (APUs).

[0003] Existing aviation battery starter vehicles mostly use series-connected battery packs for power supply. Under no-load or light-load conditions, the output voltage of the battery packs may be significantly higher than the rated value, leading to overvoltage damage to the load equipment. This results in slow voltage limiting response and poor reliability, making it difficult to meet the stringent requirements of aviation equipment for power supply voltage stability. Therefore, a voltage limiting device for aviation battery starter vehicles is designed. Utility Model Content

[0004] Purpose of the invention: The purpose of this utility model is to provide a voltage limiting device in an aviation battery starter vehicle, thereby solving the problems mentioned in the background art.

[0005] Technical Solution: A voltage limiting device in an aviation battery starter vehicle, comprising an aviation battery and a microcontroller. A power regulator is connected in series on one side of the aviation battery. The power regulator acts as a variable resistor, controlling the voltage drop by adjusting its conduction level. A series inductor is provided on one side of the power regulator, electrically connected to the power regulator. A filter capacitor is mounted on the side of the series inductor, fixedly connected to the series inductor. A high-precision voltage sensor is provided on the side of the filter capacitor, near the aviation battery. The sensor monitors the output voltage in real time. A microcontroller is installed on one side of the high-precision voltage sensor and is electrically connected to the high-precision voltage sensor. The microcontroller performs voltage threshold comparison and generates a PWM signal to control the power device to turn on. An electromagnetic relay is installed on one side of the microcontroller. The electromagnetic relay bypasses the voltage limiting device when the voltage is stable. A fast-acting fuse is installed below the electromagnetic relay. A TVS diode is connected to one side of the fast-acting fuse and is electrically connected to the fast-acting fuse. The fast-acting fuse is electrically connected to the electromagnetic relay.

[0006] Furthermore, the filter capacitor is a low-ESR tantalum capacitor or a film capacitor.

[0007] Furthermore, the fast-acting fuse provides overcurrent protection, and the TVS diode clamps transient overvoltages, protecting downstream circuitry.

[0008] Furthermore, the high-precision voltage sensor is specifically a Hall voltage sensor.

[0009] Beneficial effects:

[0010] In this invention, dynamic control of the output voltage is achieved through a power regulator. The device comprises a power regulator, a high-precision voltage sensor, a microcontroller, and an electromagnetic relay. The power regulator acts as a variable resistor, controlling the voltage drop by adjusting the conduction level. The high-precision voltage sensor monitors the output voltage in real time. When the detected voltage exceeds a set threshold, the microcontroller drives the power regulator to increase the voltage drop, stabilizing the output voltage within the standard range. When the voltage returns to normal, the microcontroller automatically performs bypass voltage limiting to reduce energy loss. This device features fast response and high reliability, making it suitable for aviation applications. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] In the diagram: 1. TVS diode; 2. Fast-acting fuse; 3. Electromagnetic relay; 4. Microcontroller; 5. High-precision voltage sensor; 6. Filter capacitor; 7. Series inductor; 8. Power regulator; 9. Aviation battery. Detailed Implementation

[0013] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] Example 1

[0015] According to the appendix Figure 1This invention provides a voltage limiting device for an aviation battery starter vehicle, comprising an aviation battery 9 and a microcontroller 4. A power regulator 8 is installed in series on one side of the aviation battery 9. The power regulator 8 acts as a variable resistor, controlling the voltage drop by adjusting the conduction level to achieve dynamic voltage regulation. The power regulator 8 has a high withstand voltage (≥100V) to adapt to the high-voltage environment of the aviation battery. A series inductor 7 is provided on one side of the power regulator 8, electrically connected to the power regulator 8. A filter capacitor 6 is installed on the side of the series inductor 7, fixedly connected to the series inductor 7. The side of the filter capacitor 6 is close to the aviation battery 9. A high-precision voltage sensor 5 is installed on one side, which monitors the output voltage in real time. A microcontroller 4 is installed on one side of the high-precision voltage sensor 5, and the microcontroller 4 is electrically connected to the high-precision voltage sensor 5. The microcontroller 4 performs voltage threshold comparison and generates a PWM signal to control the power device to turn on. An electromagnetic relay 3 is installed on one side of the microcontroller 4. When the voltage is stable, the electromagnetic relay 3 bypasses the voltage limiting device. A fast-acting fuse 2 is installed below the electromagnetic relay 3. A TVS diode 1 is connected to one side of the fast-acting fuse 2, and the TVS diode 1 is electrically connected to the fast-acting fuse 2. The fast-acting fuse 2 is electrically connected to the electromagnetic relay 3.

[0016] In this embodiment, the filter capacitor 6 is a tantalum capacitor or a film capacitor with low ESR (equivalent series resistance).

[0017] In this embodiment, the fast-acting fuse 2 provides overcurrent protection, and the TVS diode 1 clamps transient overvoltages to protect the downstream circuitry.

[0018] In this embodiment, the high-precision voltage sensor 5 is specifically a Hall voltage sensor, which monitors the output voltage in real time.

[0019] The working principle of this device is:

[0020] The designed voltage limiting device achieves dynamic control of the output voltage through a power regulator 8. The device consists of components such as a power regulator 8, a high-precision voltage sensor 5, a microcontroller 4, and an electromagnetic relay 3. The power regulator 8 acts as a variable resistor, controlling the voltage drop by adjusting the conduction level. The high-precision voltage sensor 5 monitors the output voltage in real time. When the detected voltage exceeds the set threshold, the microcontroller 4 increases the voltage drop through the power regulator to stabilize the output voltage within the standard range. When the voltage returns to normal, the microcontroller 4 automatically performs bypass voltage limiting to reduce energy loss.

[0021] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. Voltage limiting device in an aircraft battery-started vehicle, comprising an aircraft battery (9) and a microcontroller (4), characterized in that: A power regulator (8) is connected in series on one side of the aviation battery (9). The power regulator (8) acts as a variable resistor, controlling the voltage drop by adjusting the conduction level. A series inductor (7) is provided on one side of the power regulator (8), and the series inductor (7) is electrically connected to the power regulator (8). A filter capacitor (6) is installed on the side of the series inductor (7), and the filter capacitor (6) is fixedly connected to the series inductor (7). A high-precision voltage sensor (5) is provided on the side of the filter capacitor (6) and on the side close to the aviation battery (9). The high-precision voltage sensor (5) monitors the output voltage in real time. A microcontroller (4) is provided on one side of the sensor (5). The microcontroller (4) is electrically connected to the high-precision voltage sensor (5). The microcontroller (4) performs voltage threshold comparison and generates a PWM signal to control the power device to turn on. An electromagnetic relay (3) is provided on one side of the microcontroller (4). The electromagnetic relay (3) bypasses the voltage limiting device when the voltage is stable. A fast-acting fuse (2) is installed below the electromagnetic relay (3). A TVS diode (1) is connected to one side of the fast-acting fuse (2). The TVS diode (1) is electrically connected to the fast-acting fuse (2). The fast-acting fuse (2) is electrically connected to the electromagnetic relay (3).

2. A voltage limiting device for use in an aircraft storage battery starting vehicle as defined in claim 1, wherein: The filter capacitor (6) is a low-ESR tantalum capacitor or a film capacitor.

3. A voltage limiting device for use in an aircraft storage battery starting vehicle as defined in claim 1, wherein: The fast-acting fuse (2) provides overcurrent protection, and the TVS diode (1) clamps transient overvoltages to protect the downstream circuitry.

4. A voltage limiting device for use in an aircraft storage battery starting vehicle as defined in claim 1, wherein: The high-precision voltage sensor (5) is specifically a Hall voltage sensor.

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