Portable programmable power supply for maintenance and support of avionics equipment

Abstract

The utility model provides a portable programmable power supply for maintenance and support of avionics equipment. The portable programmable power supply comprises a programmable adjustable DC voltage stabilization module, an assembled battery, a DC voltage stabilization module, an intelligent charging module and an assembled battery protection module. When the avionics equipment is maintained indoors, the program-controlled adjustable direct-current voltage stabilizing module supplies power to the avionics equipment and the measurement and control host and charges the assembled battery through electric energy provided indoors, and when the avionics equipment is maintained outdoors, the program-controlled adjustable direct-current voltage stabilizing module receives the electric energy provided by the assembled battery and charges the assembled battery through the program-controlled adjustable direct-current voltage stabilizing module. And a working power supply is provided for avionics equipment and a measurement and control host. Charging of the assembled battery is protected through the direct current voltage stabilization module and the intelligent charging module, and the assembled battery is controlled and protected through the assembled battery protection module. Through the scheme, the flexibility and reliability of the power supply can be improved, the power supply requirements of indoor and outdoor avionics equipment are met, and the safety, stability and high efficiency of the battery in the charging and discharging process can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of automated measurement and control technology, and in particular to a portable programmable power supply for maintenance and support of avionics equipment. Background Technology

[0002] Programmable power supplies are high-precision, high-efficiency power devices that control output voltage and current through programming. They offer advantages such as high stability and reliability, and are widely used in scientific research, production, manufacturing, communication, and testing. In the aerospace field, programmable power supplies play a crucial role, being widely used in various aircraft equipment, such as aircraft electronics, lighting systems, and starting systems, to meet the power requirements of various aircraft components.

[0003] The unique characteristics of avionics equipment place higher technical demands on programmable power supplies. First, avionics programmable power supplies must possess comprehensive protection functions, including overcurrent, overvoltage, and overtemperature protection, to prevent circuit failures and equipment damage, ensuring flight safety. Second, avionics programmable power supplies should have emergency power supply capabilities to meet the indoor and outdoor maintenance needs of avionics equipment. Furthermore, avionics programmable power supplies must also possess portability and reliability to meet the flexible and mobile power supply requirements of avionics equipment. Currently available programmable power supply products on the market struggle to simultaneously meet all these requirements. Therefore, research into avionics programmable power supply technology is both necessary and urgent, as a continuous, efficient, and stable power supply is crucial for improving flight safety.

[0004] In view of this, a portable programmable power supply design for avionics is proposed. It adopts a dual power supply mode and is equipped with a battery protection module and a programmable interface to improve the reliability and flexibility of the power supply, thereby providing an effective power solution for the maintenance of indoor and outdoor avionics equipment. Utility Model Content

[0005] To address the aforementioned issues, embodiments of this application provide a portable programmable power supply for avionics maintenance and support. This power supply employs a dual-power supply mode, enhancing its flexibility and reliability to meet the power supply needs of indoor and outdoor avionics equipment.

[0006] Therefore, the following technical solutions are adopted in the embodiments of this application:

[0007] This application provides a portable programmable power supply for avionics equipment maintenance and support, including:

[0008] A programmable adjustable DC voltage regulator module is used to provide working power for avionics equipment and telemetry and control host. The programmable adjustable DC voltage regulator module controls its output voltage and current through a program.

[0009] The battery pack is used to store electrical energy and provide power to the programmable adjustable DC voltage regulator module;

[0010] A DC voltage regulator module is used to regulate the charging voltage of the battery pack to keep its charging voltage stable.

[0011] The intelligent charging module is used to intelligently charge the combined battery using three-segment PWM technology;

[0012] A combined battery protection module includes an IC chip, which is used to detect parameters such as voltage, current, and temperature through the IC chip, and to control and protect the combined battery according to preset protection logic;

[0013] The programmable adjustable DC voltage regulator module includes a first port, a second port, a third port, and a fourth port. The first port is connected in parallel with the avionics equipment and the telemetry and control host, providing power to them. The second port is connected in series with the DC voltage regulator module, the intelligent charging module, the combined battery protection module, and the combined battery, charging the combined battery. The third port receives power from indoor sources. The fourth port is connected in series with the combined battery protection module and the combined battery, receiving power from the combined battery. When avionics equipment is maintained indoors, the third port receives power from indoor sources to provide power to the avionics equipment and the telemetry and control host, and to charge the combined battery. When avionics equipment is maintained outdoors, the fourth port receives power from the combined battery to provide power to the avionics equipment and the telemetry and control host.

[0014] In one embodiment, the programmable adjustable DC voltage regulator module and the combined battery protection module communicate with the monitoring and control host via the RS485 protocol.

[0015] In one embodiment, the battery pack uses rechargeable lithium-ion cells.

[0016] In one embodiment, the portable programmable power supply for avionics maintenance and support further includes a battery monitoring LCD screen, which is connected to the combined battery protection module for real-time monitoring, adjustment, and protection of the combined battery.

[0017] In one embodiment, the portable programmable power supply for avionics maintenance and support further includes a configuration parameter LCD screen, which is connected to a programmable adjustable DC voltage regulator module for real-time monitoring, adjustment, and protection of the programmable adjustable DC voltage regulator module.

[0018] This utility model provides a portable programmable power supply for avionics equipment maintenance. When avionics equipment is maintained indoors, the programmable adjustable DC voltage regulator module supplies power to the avionics equipment and the telemetry and control unit (TT&C unit) using indoor power, and also charges the battery pack. When avionics equipment is maintained outdoors, the programmable adjustable DC voltage regulator module receives power from the battery pack and provides operating power to the avionics equipment and the TT&C unit. The DC voltage regulator module and intelligent charging module protect the battery pack during charging, while the battery pack protection module controls and protects the battery pack. This solution improves the flexibility and reliability of the power supply, meeting the power supply needs of indoor and outdoor avionics equipment. The battery protection module fully considers high-power heat dissipation and overall battery pack balancing, and has comprehensive protection functions, effectively ensuring the safety, stability, and efficiency of the lithium battery during charging and discharging. Attached Figure Description

[0019] The accompanying drawings used in the description of the embodiments or prior art are briefly introduced below.

[0020] Figure 1 This is a schematic diagram illustrating the internal structure and working principle of a portable programmable power supply for avionics equipment maintenance and support provided in this application embodiment. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0022] In the description of this application, the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0023] The terms "first" and "second," etc., used in the specification and claims herein are used to distinguish different objects, not to describe a specific order of objects. For example, "first operational amplifier" and "second operational amplifier," etc., are used to distinguish different operational amplifiers, not to describe a specific order of operational amplifiers.

[0024] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, contact connections, or integral connections. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In the embodiments of this application, "contact" or "coupling" can refer to direct contact between components or contact between components through adhesives or thermally conductive colloids.

[0025] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0026] Figure 1 This is a schematic diagram illustrating the internal structure and working principle of a portable programmable power supply for avionics equipment maintenance and support, provided in an embodiment of this application. Figure 1 As shown, the portable programmable power supply for avionics maintenance includes: a programmable adjustable DC voltage regulator module 101, a battery pack 102, a DC voltage regulator module 103, an intelligent charging module 104, and a battery pack protection module 105.

[0027] The programmable DC voltage regulator module 101 is used to provide operating power for the avionics equipment 106 and the telemetry and control host 107. The programmable DC voltage regulator module 101 controls its output voltage and current through a program. Preferably, the input voltage of the programmable DC voltage regulator module is DC4V to 36V, the output voltage is DC0V to 36V, and the rated current is 3.5A.

[0028] The battery pack 102 is used to store electrical energy and provide power to the programmable adjustable DC voltage regulator module 101.

[0029] The DC voltage regulator module 103 is used to regulate the charging voltage of the battery pack 102 to keep its charging voltage stable.

[0030] For example, the DC voltage regulator module 103 can stabilize a wide range of power inputs to DC36V, providing a stable and reliable charging voltage for the battery pack 102. It adopts a wide-temperature, high-reliability DC-DC module design, with an input voltage of DC4.5V to 40V, an output voltage of DC0 to 50V, a maximum output current of 6A, a conversion efficiency of 92%, and a wide temperature range.

[0031] The intelligent charging module 104 is used to intelligently charge the combined battery 102 using three-segment PWM technology.

[0032] Specifically, the three-stage PWM charging comprises three phases: pre-charging, constant current charging, and constant voltage charging. Pre-charging phase: When the battery voltage is below a certain threshold, the intelligent charging module 104 trickles-charges the battery pack 102 with a low current, gradually increasing the battery voltage until it reaches a safe charging range. Constant current charging phase: Once the battery voltage enters the safe range, the intelligent charging module 104 charges the battery pack 102 with a constant current, causing the battery voltage to gradually rise. At this time, PWM technology controls the charging current by adjusting the pulse width to ensure current stability. Constant voltage charging phase: When the battery voltage approaches the nominal full-charge voltage, the intelligent charging module 104 switches to constant voltage mode, maintaining a constant output voltage while the current gradually decreases. PWM technology is used in this phase to finely adjust the voltage, ensuring the battery is not overcharged.

[0033] The intelligent charging module 104 uses three-segment PWM (pulse width modulation) technology to intelligently charge the battery pack 102. This design can significantly improve charging efficiency and battery life, while ensuring the safety and reliability of the charging and discharging process.

[0034] The combined battery protection module 105 includes an IC chip for detecting parameters such as voltage, current, and temperature, and controlling and protecting the combined battery 102 according to preset protection logic. For example, when the voltage of the combined battery 102 exceeds a set safety upper limit, the power supply is automatically cut off or an alarm is issued to prevent overcharging. When the voltage of the combined battery 102 falls below a set safety lower limit, the load is automatically disconnected to prevent over-discharge and damage to the battery's lifespan. When the current exceeds a safety threshold, the power supply is immediately cut off to protect the combined battery 102 and the circuit from high-current surges. A short circuit is detected, and the circuit is quickly disconnected to prevent overheating or explosion of the combined battery 102. Protective measures are taken when the temperature of the combined battery 102 is too high or too low, such as stopping charging or discharging, to ensure that the combined battery 102 operates within a suitable temperature range.

[0035] Specifically, the programmable adjustable DC voltage regulator module 101 includes a first port 1011, a second port 1012, a third port 1013, and a fourth port 1014. The first port 1011 is connected in parallel with the avionics equipment 106 and the telemetry and control host 107, providing operating power to the avionics equipment 106 and the telemetry and control host 107. The second port 1012 is connected in series with the DC voltage regulator module 103, the intelligent charging module 104, the combined battery protection module 105, and the combined battery 102, charging the combined battery 102. The third port 1013 is used to receive indoor power, and the fourth port 1014 is connected in series with the combined battery protection module 105 and the combined battery 102, receiving power from the combined battery 102. When the avionics equipment 106 is being maintained indoors, the power received indoors is used through the third port 1013 to provide operating power to the avionics equipment 106 and the telemetry and control host 107, and to charge the combined battery 102. When the avionics equipment 106 is being maintained outdoors, it receives power from the combined battery 106 through the fourth port 1014 to provide power to the avionics equipment 106 and the telemetry and control host 107.

[0036] This solution allows for flexible switching of power supply methods in different environments. Indoors, it utilizes a stable power grid to ensure normal equipment operation; outdoors, it relies on the power provided by the battery pack 102, freeing it from grid limitations. Whether in a laboratory, repair workshop, or field setting, the system operates stably, improving the flexibility and efficiency of maintenance work.

[0037] In one embodiment, the programmable DC voltage regulator module 101 and the combined battery protection module 105 communicate with the monitoring and control host 107 via the RS485 protocol. The output parameters and protection parameters of the programmable DC voltage regulator module 101 can be set and queried, and the battery protection module 105 can be controlled to manage and monitor the charging and discharging process and battery status of the combined battery 102.

[0038] For example, the RS485 communication protocol is as follows:

[0039] 1) Host query command format:

[0040] Slave address function code Register start address Number of registers CRC code 1 byte 1 byte 2 bytes 2 bytes 2 bytes

[0041] Example: The host sends the command 01 03 0002 0004 65CB, which means reading the output voltage and current of the programmable adjustable DC voltage regulator module 101, that is, reading the four-byte unit starting at address 0002H.

[0042] 2) Slave data return format:

[0043] Slave address function code Number of bytes read Data content CRC code 1 byte 1 byte 1 byte 4 bytes 2 bytes

[0044] Example: The slave device sends back data 01 03 04 01F4 05DC B8F4, which means that the programmable adjustable DC voltage regulator module 101 sends back 4 bytes of query data, namely 01F4H (output voltage) and 05DCH (output current).

[0045] 3) Host configuration command format:

[0046] Slave address function code Register address Register contents CRC code 1 byte 1 byte 2 bytes 2 bytes 2 bytes

[0047] Example: The host sends the command 01 06 0000 0960 8FB2, which means setting the output voltage value of the programmable adjustable DC voltage regulator module 101, that is, writing the data 0960H to the two-byte unit at address 0000H.

[0048] In one embodiment, the battery pack 102 uses rechargeable lithium-ion cells. Preferably, the rechargeable lithium-ion cell model can be selected as 18650 / 8S3P, with a nominal voltage of 28.8V, a rated discharge current of 7.5A, a full charge voltage of 33.6V, and a discharge cutoff voltage of 21.6V.

[0049] In one embodiment, the portable programmable power supply for avionics maintenance and support also includes a battery monitoring LCD screen 108, which is connected to the combined battery protection module 105 and is used to monitor, adjust and protect the combined battery 102 in real time.

[0050] In one embodiment, the portable programmable power supply for avionics maintenance and support also includes a configuration parameter LCD screen 109, which is connected to a programmable adjustable DC voltage regulator module 101 for real-time monitoring, adjustment and protection of the programmable adjustable DC voltage regulator module 101.

[0051] The types, quantities, shapes, installation methods, and structures of portable programmable power supply components for avionics maintenance and support provided in this application are not limited to the above embodiments. All technical solutions implemented under the principles of this application are within the protection scope of this solution. Any one or more embodiments or illustrations in the specification, combined in a suitable manner, are within the protection scope of this solution.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application. Those skilled in the art should understand that although this application has been described in detail with reference to the foregoing embodiments, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions in the embodiments of this application.

Claims

1. A portable programmable power supply for maintenance and support of avionics equipment, characterized in that, include: A programmable adjustable DC voltage regulator module is used to provide working power for avionics equipment and telemetry and control host. The programmable adjustable DC voltage regulator module controls its output voltage and current through a program. The battery pack is used to store electrical energy and provide power to the programmable adjustable DC voltage regulator module; A DC voltage regulator module is used to regulate the charging voltage of the battery pack to keep its charging voltage stable. The intelligent charging module is used to intelligently charge the combined battery using three-segment PWM technology; A combined battery protection module includes an IC chip, which is used to detect parameters such as voltage, current and temperature through the IC chip, and control and protect the combined battery according to preset protection logic; The programmable adjustable DC voltage regulator module includes a first port, a second port, a third port, and a fourth port. The first port is connected in parallel with the avionics equipment and the telemetry and control host, providing power to them. The second port is connected in series with the DC voltage regulator module, the intelligent charging module, the combined battery protection module, and the combined battery, charging the combined battery. The third port receives power from indoor sources. The fourth port is connected in series with the combined battery protection module and the combined battery, receiving power from the combined battery. When avionics equipment is maintained indoors, the third port receives power from indoor sources to provide power to the avionics equipment and the telemetry and control host, and to charge the combined battery. When avionics equipment is maintained outdoors, the fourth port receives power from the combined battery to provide power to the avionics equipment and the telemetry and control host.

2. The portable programmable power supply for maintenance and support of avionics equipment according to claim 1, characterized in that, The programmable adjustable DC voltage regulator module and the combined battery protection module communicate with the measurement and control host via the RS485 protocol.

3. The portable programmable power supply for maintenance and support of avionics equipment according to claim 1, characterized in that, The battery pack uses rechargeable lithium-ion cells.

4. The portable programmable power supply for maintenance and support of avionics equipment according to claim 1, characterized in that, The portable programmable power supply for avionics maintenance and support also includes a battery monitoring LCD screen, which is connected to the combined battery protection module for real-time monitoring, adjustment and protection of the combined battery.

5. The portable programmable power supply for maintenance and support of avionics equipment according to claim 1, characterized in that, The portable programmable power supply for avionics maintenance and support also includes a configuration parameter LCD screen, which is connected to the programmable adjustable DC voltage regulator module for real-time monitoring, adjustment and protection of the programmable adjustable DC voltage regulator module.

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