Vehicle-mounted adaptive multi-mode intelligent switching power supply system

Abstract

The invention discloses a vehicle-mounted adaptive multi-mode intelligent switching power supply system, and belongs to the electrical field. The system comprises a diesel generating set, a dual-power-supply automatic switching control box, an uninterruptible power supply, a power battery pack, an alternating-current power distribution unit, a direct-current power supply, a direct-current power distribution unit, an alternating-current switching box, a master control panel and a power supply and distribution system cable network. The diesel generating set is used as a standby power supply and is automatically switched with the mains supply through the dual-power-supply automatic switching control box; the uninterruptible power supply realizes alternating current conversion and battery inversion backup; the direct-current power supply provides low-voltage direct-current output; the alternating-current and direct-current power distribution units realize electric energy distribution and control; the alternating current switching box realizes single-path input and multi-path output; and the master control panel centrally controls the start, stop and on-off of the system. The system has the characteristics of multi-mode self-adaption, intelligent switching, fault self-recovery and high reliability, and is suitable for stable power supply of vehicle-mounted equipment such as a military command vehicle.

Description

Technical Field

[0001] This invention belongs to the field of electrical engineering, specifically relating to an on-board adaptive multi-mode intelligent switching power supply system. Background Technology

[0002] The vehicle-mounted adaptive multi-mode intelligent switching power supply system and control method is a power supply system specifically developed for vehicle-mounted electrical equipment. Ensuring the reliability of the vehicle-mounted adaptive multi-mode intelligent switching power supply system is of paramount importance.

[0003] To enable the application of multi-mode adaptive switching power supply systems, this invention proposes an on-board adaptive multi-mode intelligent switching power supply system and control method.

[0004] This invention relates to the development of an on-board adaptive multi-mode intelligent switching power supply system and control method, which can realize dynamic voltage adjustment, multi-power supply cooperation and fault self-recovery functions. Summary of the Invention

[0005] The purpose of this invention is to develop a power supply system for vehicle-mounted electrical equipment.

[0006] This invention provides an on-board adaptive multi-mode intelligent switching power supply system, comprising:

[0007] Diesel generator sets, dual power automatic transfer control boxes, uninterruptible power supplies, power battery packs, AC power distribution units, DC power supplies, DC power distribution units, AC junction boxes, main control panels, and power supply and distribution system cable networks;

[0008] The power supply and distribution system cable network is used to connect various components and realize the transmission of control signals and electrical energy. Specifically, the connection method is as follows: the input end of the dual-power automatic switching control box is connected to the mains power supply and the diesel generator set respectively through the power supply and distribution system cable network, and the output end is connected to the input end of the uninterruptible power supply (UPS) through the power supply and distribution system cable network; the input end of the UPS is connected to the output end of the dual-power automatic switching control box through the power supply and distribution system cable network, and the output end is connected to the input end of the AC distribution unit through the power supply and distribution system cable network; the UPS is also connected to the power battery pack through the power supply and distribution system cable network; the output end of the AC distribution unit is connected to the input end of the AC adapter box through the power supply and distribution system cable network, and the other output end of the AC distribution unit is connected to the input end of the DC power supply through the power supply and distribution system cable network; the output end of the DC power supply is connected to the input end of the DC distribution unit through the power supply and distribution system cable network; the main control panel is connected to the dual-power automatic switching control box, the UPS, the AC distribution unit, and the DC distribution unit through the power supply and distribution system cable network for transmitting control signals.

[0009] The diesel generator set serves as a backup power source, automatically switching between the diesel generator set and the mains power source via a dual-power automatic switching control box.

[0010] An uninterruptible power supply (UPS) is used to convert input AC power into stable three-phase AC power and to provide power via an inverter from a power battery pack when the mains power fails.

[0011] DC power supplies are used to convert alternating current (AC) into low-voltage direct current (DC).

[0012] AC power distribution units and DC power distribution units are used for the distribution and control of AC and DC power, respectively;

[0013] AC adapter boxes are used to break down a single AC input into multiple independent outputs;

[0014] The main control panel is equipped with switches for system start-up, shutdown, and on / off control.

[0015] Invention effects:

[0016] This invention achieves millisecond-level intelligent switching and coordinated power supply among multiple power sources, possesses fault self-diagnosis and self-recovery capabilities, and effectively ensures the continuous and reliable operation of vehicle-mounted electrical equipment in complex environments. The system boasts high integration and strong adaptability, significantly improving the intelligence level and wartime support capabilities of the power supply system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an onboard adaptive multi-mode intelligent switching power supply system. Detailed Implementation

[0018] The following will describe in more detail the vehicle-mounted adaptive multi-mode intelligent switching power supply system provided by the present invention, with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of an on-board adaptive multi-mode intelligent switching power supply system. This system is an implementation scheme of an on-board adaptive multi-mode intelligent switching power supply system and its control method. The system consists of core components such as a 60KVA diesel generator set, a dual-power automatic switching control box, a 30KVA uninterruptible power supply (UPS), a power battery pack, an AC power distribution unit, a DC power supply, an AC adapter box, a main control panel, and a power supply and distribution system cable network. Its purpose is to ensure stable and reliable power supply and distribution to all internal electrical equipment during standby and operational use.

[0020] The 60KVA diesel generator set serves as a backup power source, providing power support for both DC and AC power supplies. This generator set is a Panda Power XM-W70 model, with the following specifications: diesel engine model WP4.1D80E200, generator model XM70-14, and a power output of 60KVA.

[0021] The dual-power automatic transfer switch control box is a device used to switch power supply between mains power and a diesel generator set. When the mains power fails, this device can quickly start the diesel generator set and automatically switch to diesel generator power to ensure continuous power supply. The control box is equipped with an input circuit breaker, an ATS (Automatic Transfer Switch) controller (WATSG-100 / 4A100AGT), a surge protector (IPRU4P100KA), and indicator lights (220V). Under normal circumstances, the system is powered by mains power. The logic control unit, such as the ATS controller, detects the mains power and connects the mains circuit, simultaneously disconnecting the diesel generator set and illuminating the mains power indicator light on the control box. When the mains power fails, the ATS controller sends a signal to start the diesel generator set. If the "Start Generator" switch on the manual control box in the cab is on at this time, the diesel generator will start automatically; otherwise, it will not start. When the mains power is restored, the system will automatically switch back to mains power and shut down the diesel generator. Surge protectors are connected in parallel to the main line circuit for lightning protection.

[0022] A 30kVA uninterruptible power supply (UPS) converts 380V / 50Hz ±10% AC power into stable 380V / 50Hz three-phase AC power. Electrical isolation is achieved between the AC input and AC output. The input AC voltage is first filtered and rectified into high-voltage DC, and then inverted into a three-phase power supply with a total output power of 30kVA. Each phase can be independently loaded, with an output power of 10kVA (220V).

[0023] A UPS not only outputs a stable three-phase 380V / 50Hz AC power supply but also charges the battery pack. When the mains power fails, the battery pack automatically converts the AC power to three-phase 380V / 50Hz AC power to ensure uninterrupted power supply. A UPS power supply mainly consists of an AC / DC rectifier module, an AC / DC charger, an energy storage battery, and a DC / AC inverter. The rectifier module rectifies the three-phase mains power into high-voltage DC, which is then supplied to downstream devices via the inverter. The energy storage battery is a high-voltage DC battery with a voltage lower than the rectifier module's output voltage; it provides energy to the inverter in the event of an input power failure through DC / DC conversion. The AC / DC charger charges the energy storage battery when its charge is low.

[0024] When both the mains power supply and the diesel generator malfunction, the power battery pack provides power to the system equipment via UPS, ensuring continuous operation for 30 minutes. The power battery pack uses nickel-metal hydride batteries.

[0025] The DC power distribution unit consists of a monitoring module and a power output section. It can receive input from two DC power supplies, each with three branch outputs, for a total of six power distribution channels. This unit has the function of receiving system hardware interface control and uploading power supply operating status. It can also communicate with the system computer via Ethernet port to upload operating status information. The AC adapter box is mainly used for line splitting, enabling 1-to-5 output conversion, and serves as an accessory product for the power distribution unit.

[0026] The AC power distribution unit consists of a monitoring module and a power distribution control chassis. Its design is similar to that of the DC power distribution unit, but the power supply voltage and the number of distribution circuits are different, and the corresponding software is also different.

[0027] Two identical DC power supplies convert 220V / 50Hz AC power to 28V low-voltage DC power, each with an output power of 2400W. The main hardware circuit of the DC power supply consists of seven parts: input EMI filter circuit, power factor correction circuit, DC / DC power circuit, sampling circuit, protection circuit, auxiliary power supply circuit, and switch display circuit.

[0028] AC adapter boxes, as accessories for power distribution units, are mainly used for circuit decomposition and can realize 1-to-5 output conversion.

[0029] The front panel of the main control panel has four switches: a generator start / stop switch, a UPS start / stop switch, an AC connection switch, and a DC connection switch. The power supply and distribution system cable network is used to realize the control and energy exchange between system power supply, power source, and distribution equipment.

[0030] The specific embodiments described above illustrate the purpose, technical solution, and beneficial effects of the present invention in detail. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, or improvements within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vehicle-mounted adaptive multi-mode intelligent switching power supply system, characterized in that, The system comprises: a diesel generator set, a dual power automatic switching control box, an uninterruptible power supply, a power battery pack, an alternating current power distribution unit, a direct current power supply, a direct current power distribution unit, an alternating current adapter box, a master control panel, and a power supply and distribution system cable network; The power supply and distribution system cable network is used to connect the components and realize the transmission of control signals and electric energy. The specific connection mode is as follows: the input end of the dual power automatic switching control box is connected to the commercial power supply and the diesel generator set through the power supply and distribution system cable network, and the output end is connected to the input end of the uninterruptible power supply through the power supply and distribution system cable network; the input end of the uninterruptible power supply is connected to the output end of the dual power automatic switching control box through the power supply and distribution system cable network, the output end is connected to the input end of the alternating current power distribution unit through the power supply and distribution system cable network, and the uninterruptible power supply is connected to the power battery pack through the power supply and distribution system cable network; the output end of the alternating current power distribution unit is connected to the input end of the alternating current adapter box through the power supply and distribution system cable network, and another output end of the alternating current power distribution unit is connected to the input end of the direct current power supply through the power supply and distribution system cable network; the output end of the direct current power supply is connected to the input end of the direct current power distribution unit through the power supply and distribution system cable network; the master control panel is connected to the dual power automatic switching control box, the uninterruptible power supply, the alternating current power distribution unit, and the direct current power distribution unit through the power supply and distribution system cable network, and is used to transmit control signals; The diesel generator set serves as a backup power supply and automatically switches with the commercial power supply through the dual power automatic switching control box; The uninterruptible power supply is used to convert the input alternating current into stable three-phase alternating current and provide power through the power battery pack when the commercial power fails; The direct current power supply is used to convert alternating current into low-voltage direct current; The alternating current power distribution unit and the direct current power distribution unit are respectively used for the distribution and control of alternating current and direct current; The alternating current adapter box is used to decompose single alternating current input into multiple independent outputs; The master control panel is provided with switches for system start-stop and on-off control.

2. The system of claim 1, wherein, The dual power automatic switching control box is internally provided with a logic control unit. When the commercial power voltage disappears, the logic control unit outputs a start signal to the diesel generator set within milliseconds, and after the commercial power voltage is restored, the logic control unit delays to confirm the stable voltage, then automatically disconnects the oil machine side path, closes the commercial power side path, and simultaneously prompts the current power source to the operator through the color change of the indicator light, so as to realize the unattended power supply path switching in the whole period.

3. The system of claim 1, wherein, The dual power automatic switching control box is internally provided with an input air switch, an automatic switching switch controller, a lightning protection device, and an indicator light. The automatic switching switch controller detects the commercial power supply and controls the start and switching of the diesel generator set. The lightning protection device is connected in parallel to the main line loop for lightning protection.

4. The system of claim 1, wherein, The uninterruptible power supply is provided with an electrical isolation link at the alternating current input end, so that the output three-phase alternating current and the power grid form an independent loop, and the voltage remains stable when any phase line independently carries the load.

5. The system of claim 1, wherein, An uninterruptible power supply (UPS) includes an AC / DC rectifier module, an AC / DC charger, an energy storage battery, and a DC / AC inverter. The rectifier module rectifies the three-phase mains power into high-voltage DC. The inverter supplies power to downstream equipment. The energy storage battery provides energy to the inverter when the mains power fails. The AC / DC charger charges the energy storage battery when its charge is low.

6. The system of claim 1, wherein, The power battery pack uses the DC boost circuit inside the uninterruptible power supply to raise its own voltage to the voltage level required by the inverter, thereby providing continuous AC output to the downstream load when both the diesel generator and the mains power fail.

7. The system of claim 1, wherein, The DC power distribution unit integrates a monitoring module and a power output module. The monitoring module collects real-time information on voltage, current and temperature of each branch and interacts with the system computer through a hardware interface. The power output module implements independent on / off control of the DC output according to the instructions of the monitoring module. In the event of overvoltage, overcurrent or short circuit in any branch, the monitoring module immediately disconnects the branch and uploads a fault code, realizing intelligent distribution and protection of DC power.

8. The system of claim 1, wherein, The DC power supply has a power factor correction circuit at the input end to synchronize the input current waveform with the voltage waveform, and at the output end, it implements overvoltage, overcurrent and short circuit protection for each DC branch through multiple independent sampling and protection circuits.

9. The system of claim 1, wherein, The AC junction box is equipped with conductive bars and insulating partitions to decompose a single AC input into multiple independent outputs. Each output is equipped with a replaceable fuse, and a transparent observation window is set on the box panel to intuitively display the fuse status, enabling flexible expansion of AC lines and rapid fault location.

10. The system of claim 1, wherein, The main control panel centrally houses the generator start / stop switch, uninterruptible power supply start / stop switch, AC connection switch, and DC connection switch. Each switch is equipped with a mechanical holding mechanism and position indicator marks. The back of the panel is connected to the power supply and distribution system cable network via pluggable terminals, allowing operators to perform zonal power-on, power-off, and reset operations on the entire power supply system from a single interface, and to cut off all outputs with a single button in an emergency.

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