High-voltage distribution box

Abstract

The utility model provides a high-voltage distribution box, an MOS tube is arranged in the high-voltage distribution box, the high-voltage distribution box controls five paths of high-voltage output, the five paths of high-voltage output comprise a first type of output and a second type of output, and the first type of output and the second type of output are both provided with power-on and power-off control so as to reduce power consumption of the high-voltage distribution box. The first type of output comprises a first power distribution switch, a first IO expansion board, a first intelligent power distribution control module, a high-voltage power distribution control module and a high-voltage direct-current contactor, and the high-voltage power distribution control module is electrically connected with the high-voltage direct-current contactor to control the high-voltage direct-current contactor to act; the second type of output comprises a second power distribution switch, a second IO expansion board, a second intelligent power distribution control module and an intelligent power module; and the intelligent power module is electrically connected with the MOS tube to control the on and off of the MOS tube. During a duty task, the power consumption of the power battery pack is effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of unattended ultra-long-range rocket launchers, and in particular to a high-voltage distribution box capable of reducing power consumption of a high-voltage battery pack. Background Art

[0002] In the field of unmanned ultra-long-range rocket launchers, the action mission only lasts for 5 minutes in 24 hours a day, and the rest of the time is in communication duty status.

[0003] The existing high-voltage distribution boxes in the field of ultra-long-range rocket launchers consume the same amount of battery power in the high-voltage battery pack during action tasks as during duty tasks.

[0004] It can be seen that according to the characteristics of the mission profile, it is a topic worth studying to cut off the power supply of non-working load equipment during the duty mission in order to reduce the daily consumption of the high-voltage battery pack. Utility Model Content

[0005] The technical problem to be solved by the utility model is how to realize powering off of non-working load equipment during unattended tasks, so as to reduce the daily consumption of battery power of the high-voltage battery pack.

[0006] In order to solve the above technical problems, the utility model provides a high-voltage distribution box, wherein a MOS tube is arranged inside the high-voltage distribution box, and the high-voltage distribution box controls five high-voltage outputs, wherein the five high-voltage outputs include a first type of output and a second type of output, and the first type of output and the second type of output are both provided with a power-on and power-off control to reduce the power consumption of the high-voltage distribution box, wherein:

[0007] The first type of output includes a first power distribution switch, a first IO expansion board, a first intelligent power distribution control module, a high-voltage power distribution control module and a high-voltage DC contactor, and the high-voltage power distribution control module is electrically connected to the high-voltage DC contactor to control the action of the high-voltage DC contactor;

[0008] The second type of output includes a second power distribution switch, a second IO expansion board, a second intelligent power distribution control module and an intelligent power module. The intelligent power module is electrically connected to the MOS tube to control the on and off of the MOS tube.

[0009] Furthermore, the first IO expansion board is electrically connected to the first power distribution switch to collect the first IO signal of the first power distribution switch; the first intelligent power distribution control module is communicatively connected to the first IO expansion board via a CAN bus to transmit the first IO signal; the high-voltage power distribution control module is communicatively connected to the first intelligent power distribution control module via a CAN bus to receive the first IO signal.

[0010] Furthermore, the second IO expansion board is electrically connected to the second power distribution switch to collect the second IO signal of the second power distribution switch; the second intelligent power distribution control module is communicatively connected to the second IO expansion board via a CAN bus to transmit the second IO signal; the intelligent power module is communicatively connected to the second intelligent power distribution control module via a CAN bus to receive the second IO signal.

[0011] Furthermore, the high-voltage power distribution control module and the intelligent power module are provided with an output overcurrent sampling circuit.

[0012] Furthermore, the intelligent power module is also provided with a short-circuit protection circuit.

[0013] Furthermore, an indicator light, a power distribution control switch, a fault reset switch and an alarm horn are provided on the side wall panel of the high-voltage distribution box.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model implements redundant power-off control on the control output circuit of the high-voltage distribution box, thereby powering off the load equipment that is not working during the duty, thereby reducing the daily consumption of the power battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the power-on and power-off principle diagram for controlling the first type of output of the utility model;

[0017] Figure 2 This is the power-on and power-off principle diagram for controlling the second type of output of the utility model;

[0018] Figure 3 It is a schematic diagram of a control panel of the utility model;

[0019] Figure 4 It is the input part circuit diagram of the circuit principle diagram of the utility model;

[0020] Figure 5 It is a circuit diagram of the output part of the circuit principle diagram of the utility model;

[0021] Figure 6 It is a circuit diagram of the control part of the circuit principle diagram of the utility model.

[0022] In the figure: 1. Operation indicator light; 2. Fault indicator light; 3. Power distribution control switch; 4. Fault reset switch; 5. Alarm horn; 6. Upgrade test. DETAILED DESCRIPTION

[0023] In order to make the technical scheme and technical effect of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments.

[0024] The utility model aims to provide a high-voltage distribution box which can reduce the power consumption of a high-voltage battery pack when on duty.

[0025] The high-voltage distribution box mainly includes intelligent distribution control module, high-voltage distribution control module, high-voltage DC contactor, intelligent power module, fuse, auxiliary power module, electrical connector, etc.

[0026] Intelligent power distribution control module: manages the operation information and the power distribution output of the high-voltage distribution box;

[0027] High-voltage power distribution control module and high-voltage DC contactor: realize the voltage and current sampling and on-off control functions of DC540V output 1, and the power of each channel can reach 45.36kW;

[0028] Intelligent power module: Sampling and controlling the output voltage and current of 2 / 3 / 4 outputs of DC540V. A single intelligent power module of this type can control one DC power distribution output, and the output power of each output can reach 11.34kW.

[0029] Fuse (100A): provides short-circuit protection for the DC / DC power supply;

[0030] Auxiliary power supply module: provides DC24V control power supply for the high-voltage distribution box.

[0031] 1. Input characteristic design of high voltage distribution box:

[0032] The input aviation plug uses XCD39F4Z1D40, with a rated current of 100A. The input is directly connected to the front stage of the output module, and the output module voltage sampling range is DC100V-DC750V. Therefore, at rated voltage, the total input power of the high-voltage battery pack is:

[0033] 540V×200A=108000W.

[0034] Meet the high-voltage battery pack input requirements, that is, follow the high-voltage battery pack input, the battery pack input maximum voltage is not greater than DC620V, and the power is not greater than 50kW.

[0035] 2. Output characteristic design of high voltage distribution box:

[0036] The high-voltage distribution box controls five high-voltage outputs, which include the first-class output and the second-class output. Both the first-class output and the second-class output are provided with power-on and power-off control to reduce the power consumption of the high-voltage distribution box, including:

[0037] like Figure 1 As shown, the first type of output includes a first power distribution switch, a first IO expansion board, a first intelligent power distribution control module, a high-voltage power distribution control module and a high-voltage DC contactor.

[0038] The first IO expansion board is electrically connected to the first distribution switch to collect the first IO signal of the first distribution switch; the first intelligent power distribution control module is connected to the first IO expansion board via CAN bus communication to transmit the first IO signal; the high-voltage power distribution control module is connected to the first intelligent power distribution control module via CAN bus communication to receive the first IO signal; the high-voltage power distribution control module is electrically connected to the high-voltage DC contactor, and after receiving the instruction, the high-voltage power distribution control module outputs a control signal to control the action of the high-voltage DC contactor; finally, the power-on and power-off control of the output device is realized.

[0039] The voltage drop of the first type of output is mainly caused by the contactor. The high-voltage DC contactor is a mechanical contact and the voltage drop can be ignored.

[0040] like Figure 2 As shown, the second type of output includes a second power distribution switch, a second IO expansion board, a second intelligent power distribution control module and an intelligent power module.

[0041] The second IO expansion board is electrically connected to the second power distribution switch to collect the second IO signal of the second power distribution switch; the second intelligent power distribution control module is connected to the second IO expansion board via CAN bus communication to transmit the second IO signal; the intelligent power module is connected to the second intelligent power distribution control module via CAN bus communication to receive the second IO signal; the intelligent power module is electrically connected to the MOS tube, and after receiving the instruction, the intelligent power module controls the conduction and shutdown of the MOS tube, and finally realizes the power-on and power-off control of the output device.

[0042] The voltage drop of the second type of output is mainly caused by the intelligent power module, which realizes power on and off by controlling the positive pole.

[0043] like Figure 3 As shown, the high-voltage distribution box communicates with the high-voltage battery pack, DC / DC power supply, charging device, and inverter power supply through the single-cell interconnection CAN bus to monitor the operating status of the power system and the power-on status of the output device. When the solar cell group and the charging device fail, the fault information is reported to the high-voltage distribution box through the CAN bus, and the alarm speaker 5 is notified to alarm the fault. After the fault is eliminated, the power system can be restored to normal operation through the fault reset switch 4.

[0044] The control panel of the high voltage distribution box is equipped with:

[0045] Operation indicator light 1: indicates the working status of the high-voltage distribution box. When the high-voltage distribution box is started, the operation indicator light 1 is always green;

[0046] Fault indicator light 2: When a fault occurs in the high-voltage distribution box, the fault indicator light 2 can give a light alarm;

[0047] Power distribution control switch 3: When the high-voltage distribution box is working normally, the DC540V output can be turned on or off through the power distribution control switch 3;

[0048] Fault reset switch 4: After the high-voltage distribution box fault is eliminated, press the fault reset switch 4 to resume normal operation;

[0049] Warning horn 5: When the high-voltage distribution box alarms or fails, the warning horn 5 will sound intermittently or continuously to give a prompt;

[0050] Upgrade test 6: used for internal testing and subsequent program upgrades, etc.

[0051] 4. Design of protection characteristics of high voltage distribution box, such as Figure 4-6 As shown:

[0052] The protection characteristics designed for the high-voltage distribution box mainly include DC output overcurrent protection and DC output short-circuit protection.

[0053] (1) DC output overcurrent protection

[0054] The high-voltage power distribution control module and the intelligent power module have an output overcurrent sampling circuit. When the sampling current is higher than the set value, the high-voltage power distribution control module controls the contactor to shut down and the intelligent power module main control unit controls the MOS tube to disconnect, thereby realizing the DC output overcurrent protection function. When any DC output of the high-voltage distribution box group is overcurrent, the corresponding DC output is cut off, the high-voltage distribution box fault indicator 2 is always on, and the high-voltage distribution box alarm horn 5 sounds for a long time, and it does not affect the power supply of other DC outputs, thereby realizing DC output overcurrent protection. After the fault is eliminated, press the high-voltage distribution box fault reset switch 4, and the high-voltage distribution box can resume normal operation.

[0055] (2) DC output short circuit protection

[0056] The intelligent power module has a short-circuit protection function. When the DC output is short-circuited, the main control unit of the intelligent power module controls the MOS tube to disconnect to achieve the short-circuit protection function.

[0057] The utility model makes a redundant design for the control output circuit of the high-voltage distribution box. According to the characteristics of the mission profile, when on duty, the load equipment that is not working is powered off to reduce the daily consumption of the battery.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-voltage distribution box, wherein a MOS tube is arranged inside the high-voltage distribution box. It is characterized in that The high-voltage distribution box controls five high-voltage outputs, and the five high-voltage outputs include first-type outputs and second-type outputs. Both the first-type outputs and the second-type outputs are provided with power-on and power-off controls to reduce the power consumption of the high-voltage distribution box, wherein: The first type of output includes a first power distribution switch, a first IO expansion board, a first intelligent power distribution control module, a high-voltage power distribution control module and a high-voltage DC contactor, and the high-voltage power distribution control module is electrically connected to the high-voltage DC contactor to control the action of the high-voltage DC contactor; The second type of output includes a second power distribution switch, a second IO expansion board, a second intelligent power distribution control module and an intelligent power module. The intelligent power module is electrically connected to the MOS tube to control the on and off of the MOS tube.

2. The high voltage distribution box according to claim 1, It is characterized in that The first IO expansion board is electrically connected to the first power distribution switch to collect the first IO signal of the first power distribution switch; the first intelligent power distribution control module is communicatively connected to the first IO expansion board via a CAN bus to transmit the first IO signal; the high-voltage power distribution control module is communicatively connected to the first intelligent power distribution control module via a CAN bus to receive the first IO signal.

3. The high voltage distribution box according to claim 1, It is characterized in that The second IO expansion board is electrically connected to the second power distribution switch to collect the second IO signal of the second power distribution switch; the second intelligent power distribution control module is communicatively connected to the second IO expansion board via a CAN bus to transmit the second IO signal; the intelligent power module is communicatively connected to the second intelligent power distribution control module via a CAN bus to receive the second IO signal.

4. The high voltage distribution box according to claim 1, It is characterized in that The high-voltage power distribution control module and the intelligent power module are provided with an output overcurrent sampling circuit.

5. The high voltage distribution box according to claim 1, It is characterized in that The intelligent power module is also provided with a short circuit protection circuit.

6. The high voltage distribution box according to claim 1, It is characterized in that The high-voltage distribution box comprises a control panel, on which an operation indicator light, a fault indicator light, a power distribution control switch, a fault reset switch and an alarm horn are arranged.

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