Container power supply system with photovoltaic compensation

Abstract

The utility model provides a container power supply system with photovoltaic compensation, which comprises a container, a high-voltage battery pack arranged in the container, a solar battery pack arranged on a top cover of the container and a cabinet arranged in the container, a charging module, a high-voltage distribution box, an inverter power supply and a DC / DC power supply are arranged in the cabinet, the charging module is synchronously connected with alternating current (AC) 380V and outputs high voltage (DC) 540V when receiving high-voltage output of the solar battery pack, and the high-voltage battery pack performs load power distribution through the high-voltage distribution box. The inverter power supply converts the high voltage DC 540V into AC 380V so as to provide an AC power supply for AC equipment in the container; and the DC / DC power supply is used for converting the high voltage DC 540V into DC 28V so as to provide a DC power supply for low-voltage DC equipment in the container. According to the utility model, the solar battery pack is arranged on the top cover of the container, the electric quantity of the high-voltage battery pack is supplemented, the internal space of the container is not occupied, the one-time charging service time of the high-voltage battery pack is prolonged, and the maintenance frequency is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage battery charging, and in particular to a container power supply system with photovoltaic compensation. Background Art

[0002] The launch scene of ultra-long-range rocket launchers is generally in uninhabited areas. Due to environmental restrictions, it is relatively difficult to replenish power in military cabins. Currently, the high-voltage battery pack in the ultra-long-range launcher cabin can only be charged manually on a regular basis, which brings high maintenance costs.

[0003] It can be seen that how to increase the usage time of a high-voltage battery pack on a single charge and realize unattended operation is a problem worthy of study. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to increase the one-time charging use time of a high-voltage battery pack in a super-long-range launch cannon cabin and realize unattended operation.

[0005] In order to solve the above technical problems, the utility model provides a container power supply system with photovoltaic compensation, comprising a container and a high-voltage battery group arranged inside the container, characterized in that it also includes a solar cell group installed on the top cover of the container and a cabinet arranged inside the container, wherein the cabinet is provided with:

[0006] A charging module, which is synchronously connected to AC380V and outputs high voltage DC540V when receiving the high voltage output of the solar cell group, and the charging module communicates and interconnects with the high voltage battery group through a CAN interface;

[0007] A high-voltage distribution box, through which the high-voltage battery pack distributes load power, and the high-voltage distribution box and the high-voltage battery pack communicate and interconnect via a CAN interface;

[0008] An inverter power supply, which converts the high voltage DC540V into AC380V to provide AC power to the AC equipment in the container;

[0009] A DC / DC power supply converts the high voltage DC540V into DC28V to provide DC power to the low voltage DC equipment in the container, and the DC / DC power supply and the inverter power supply as well as the DC / DC power supply and the high voltage distribution box are communicated and interconnected via a CAN interface.

[0010] Furthermore, the solar cell group is deployed and retracted synchronously with the top cover of the container.

[0011] Furthermore, the cabinet is vertically provided with four layers inside, and includes the charging module, inverter power supply, high-voltage distribution box and DC / DC power supply from top to bottom.

[0012] Furthermore, the high-voltage battery pack is of a box-type structure, and includes two battery boxes and a control box.

[0013] Furthermore, a power source opening is exposed on the outer surface of the container, and the high-voltage battery pack switch is arranged at the power source opening to control the power on and off of the high-voltage battery pack.

[0014] Furthermore, a charging indicator light of the high-voltage battery pack is also provided at the power port.

[0015] Preferably, the high-voltage battery pack and the charging module are both double-layer structures.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model provides a solar cell group on the top cover of the container to supplement the energy of the high-voltage battery group without occupying the internal space of the container, thereby extending the use time of the high-voltage battery group on a single charge and reducing the maintenance frequency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a principle block diagram of the utility model;

[0019] Figure 2 It is a side view of the interior of the container of the present invention.

[0020] In the figure: 10, high-voltage battery pack; 11, battery box; 12, control box; 20, cabinet. DETAILED DESCRIPTION

[0021] 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.

[0022] The utility model aims to use sunlight to perform photovoltaic charging compensation on the high-voltage battery pack 10 in the ultra-long-range launch cannon cabin, thereby increasing the maintenance cycle of the high-voltage battery pack 10 and reducing the maintenance cost of the power system. The power system is a power control and distribution system that integrates energy storage, power conversion, and high-voltage power distribution management.

[0023] like Figure 1As shown, after the AC380V alternating current and the solar cell group are connected to the charging module, the charging module receives the high voltage output of the solar cell group, completes the power generation management of the solar cell group, and supplements the daily power consumption of the high voltage battery group 10 in the combat readiness state. The charging module is synchronously connected to the AC380V, mainly managing the charging of the high voltage battery group 10 according to the requested voltage of the high voltage battery group 10, and managing the discharge according to the combat mission profile.

[0024] The high-voltage battery pack 10 outputs DC540V (nominal) high-voltage electricity to provide power for the high-voltage distribution box, DC / DC power supply, and inverter power supply.

[0025] In combat readiness, the high-voltage battery pack 10 receives combat mission commands from the host computer, and simultaneously uploads the operation information and fault information of the power supply system to the remote control center via CAN communication.

[0026] Each unit communicates and interconnects through the CAN interface, specifically, the charging module and the high-voltage battery pack 10 communicate and interconnect through the CAN interface; the high-voltage distribution box and the high-voltage battery pack 10 communicate and interconnect through the CAN interface; the DC / DC power supply and the inverter power supply, and the DC / DC power supply and the high-voltage distribution box communicate and interconnect through the CAN interface. The operating status information and fault information are uniformly reported to the high-voltage distribution box, and the high-voltage distribution box summarizes the operating status information and fault information of each unit and reports it to the command center.

[0027] The high-voltage distribution box synchronously receives the mission commands issued by the command center, controls five high-voltage outputs to execute mission profile combat tasks, controls the DC / DC power supply to output two isolated DC28V outputs, one to provide DC28V control power to other equipment, and the other to provide low-voltage power supply to related low-voltage DC loads.

[0028] The DC / DC power supply converts the high voltage DC540V (nominal) into DC28V, providing stable and reliable DC power for the low voltage DC equipment in the container.

[0029] The inverter power supply converts the high voltage DC540V (nominal) into AC380V, providing stable and reliable AC power for the AC equipment in the container.

[0030] The electrical interface in the utility model uses XCD and XCE series aviation plugs. Aviation plugs of different models or different key positions are selected according to different voltage levels to prevent mis-insertion. Aviation plugs with a certain margin (level I derating or level II derating) are selected according to the rated current.

[0031] Generally speaking, the design of a solar power generation system needs to determine the required configuration capacity of the system based on relevant factors such as the local climate conditions, sunshine duration, and power supply demand of the project, and determine the form of the photovoltaic array based on the system capacity and DC bus voltage.

[0032] like Figure 2 As shown, the power supply system adopts a distributed design, mainly including a solar cell group, a charging module (including photovoltaic input and AC input), a high-voltage battery group 10, a high-voltage distribution box, a DC / DC power supply, an inverter power supply, and a cabinet, wherein the cabinet and the high-voltage battery group 10 are installed inside the container; the solar cell group is installed on the top cover of the container, and is deployed and retracted synchronously with the top cover of the container. Specifically, the conventional slide rail is used in conjunction with a telescopic mechanism to realize the deployment and retraction of the solar cell.

[0033] A high-voltage battery pack 10 power switch is set at the container power port. Under normal circumstances, the switch here is used to control the power on and off of the high-voltage battery pack 10; a high-voltage battery pack 10 full indicator light is simultaneously set at the container power port.

[0034] The cabinet is equipped with a charging module, an inverter, a high-voltage distribution box, and a DC / DC power supply. Preferably, the charging module, the high-voltage distribution box, the DC / DC power supply, and the inverter are all standard 19-inch chassis. There are four layers vertically arranged inside the cabinet, and from top to bottom, they include a charging module on the first layer, an inverter on the second layer, a high-voltage distribution box on the third layer, and a DC / DC power supply on the fourth layer. Such a layout design facilitates process routing and facilitates later maintenance.

[0035] The high-voltage battery pack 10 is a box-type structure. To maximize the use of space, the high-voltage battery pack 10 and the charging module are designed as double-layer structures. The high-voltage battery pack 10 includes two battery boxes 11 and a control box 12, wherein the battery box 11 is composed of a lithium battery pack, a BMS acquisition module, an output contactor, and an electrical connector; the high-voltage control box is composed of a main control module, a DC / DC auxiliary power supply module, a discharge current Hall, a charging current Hall, an anti-reverse diode, a charging contactor, a discharge contactor, a heating contactor, an indicator light, a switch, an electrical connector, etc.

[0036] According to the requirements, five 460W photovoltaic modules are currently selected for series connection, and the total capacity of the photovoltaic system is 2.3kW. The relationship between photovoltaic power generation and system power consumption is calculated based on the total capacity.

[0037] Since the actual power generation of solar energy is closely related to the local climate conditions and the duration of light, the utility model selects the daily radiation of Fuzhou, 12001KJ / m2, for estimation. The daily radiation is converted into the daily average peak sunshine hours, and the daily average peak sunshine hours are converted according to the standard irradiance of 1kW / m2. The calculation results are as follows:

[0038] 12001KJ / m2=12001k·W·s / m2÷3600s=3.33kWh / m2=3.33h

[0039] That is, the annual average peak sunshine hours in Fuzhou is 3.33h.

[0040] According to the peak power of the solar cell group of 2.3kW, the daily power generation is 2.3kW×3.33h≈7.66kWh. The comprehensive efficiency coefficient K (including azimuth correction coefficient, conversion efficiency, MPPT tracking efficiency, component surface contamination coefficient, etc., which is relatively complicated, and 0.8 is taken here) is converted, and the actual daily power supply capacity of the system is 7.66kWh×0.8=6.1kWh.

[0041] The following is to calculate the power system power capacity

[0042] When on duty:

[0043] During the 24-hour duty, the high-voltage distribution box consumes 16W of power, the DC / DC power supply consumes 35.6W of power (calculated based on the full-speed power consumption of the fan), and the communication equipment consumes 80W in silent communication mode. The total power consumption is:

[0044] 16W+35.6W+80W=131.6W;

[0045] Average daily consumption:

[0046] 0.1316kW×24h=3.15kWh;

[0047] During combat missions:

[0048] The total time required for the container to be deployed and withdrawn is no more than 5 minutes. During the combat mission, the high-voltage distribution box consumes 27.38W of power, the DCDC power supply consumes 35.6W (calculated based on the power consumption of the fan at full speed), and the communication equipment consumes 160W in working mode. The total consumption is:

[0049] 27.38W+35.6W+160W=222.98W;

[0050] Executing a job consumes:

[0051] 0.2223kW×5 / 60h=0.018kWh;

[0052] The combat mission load consumes about 1kWh; a total of 1.018 degrees; when performing combat missions, the duty mission working time is:

[0053] 24h-5 / 60h=23.91h;

[0054] On-duty mission consumption:

[0055] 0.1316kW×23.91h=3.146kWh.

[0056] In summary, if three jobs are executed in a week, the total number of jobs in a week is:

[0057] 4×3.15kWh+3×1.018kWh+3×3.146kWh=25.092kWh;

[0058] The amount of photovoltaic charging for one week is:

[0059] 7×6.1kWh=42.7kWh, meets the demand.

[0060] The utility model compensates for the remaining power of the high-voltage battery pack 10 in the container through the compensation of the photovoltaic solar panel, while meeting the requirement of not occupying the internal container space, thereby extending the maintenance time of the high-voltage battery pack 10 during the operation of the equipment and reducing the maintenance frequency. At the same time, the unmanned communication duty mode is realized without affecting the combat mission.

[0061] Although the 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 container power supply system with photovoltaic compensation, comprising a container and a high-voltage battery pack (10) arranged inside the container, characterized in that: It also includes a solar cell group installed on the top cover of the container and a cabinet (20) arranged inside the container, wherein the cabinet (20) is provided with: A charging module, wherein the charging module is synchronously connected to an alternating current of 380V AC and outputs a high voltage of 540V DC when receiving the high voltage output of the solar cell group, and the charging module and the high voltage battery group (10) are communicated and interconnected via a CAN interface; A high-voltage distribution box, through which the high-voltage battery pack (10) distributes load power, and the high-voltage distribution box and the high-voltage battery pack (10) are interconnected and communicated via a CAN interface; An inverter power supply, which converts the high voltage DC540V into AC380V to provide AC power to the AC equipment in the container; A DC / DC power supply converts the high voltage DC540V into DC28V to provide DC power to the low voltage DC equipment in the container, and the DC / DC power supply and the inverter power supply as well as the DC / DC power supply and the high voltage distribution box are communicated and interconnected via a CAN interface.

2. The container power supply system with photovoltaic compensation according to claim 1 is characterized in that: The solar cell group is unfolded and retracted synchronously with the top cover of the container.

3. The container power supply system with photovoltaic compensation according to claim 1, characterized in that: The cabinet has four layers arranged vertically inside, and includes the charging module, the inverter power supply, the high-voltage distribution box and the DC / DC power supply in order from top to bottom.

4. The container power supply system with photovoltaic compensation according to claim 1, characterized in that: The high-voltage battery pack (10) is of a box-type structure, and comprises two battery boxes (11) and a control box (12).

5. The container power supply system with photovoltaic compensation according to claim 1, characterized in that: A power source opening is exposed on the outer surface of the container, and the high-voltage battery pack switch is arranged at the power source opening to control the on / off of the high-voltage battery pack (10).

6. The container power supply system with photovoltaic compensation according to claim 5, characterized in that: A charging indicator light of the high-voltage battery pack (10) is also provided at the power source opening.

7. The container power supply system with photovoltaic compensation according to claim 1, characterized in that: The high-voltage battery pack (10) and the charging module both have a double-layer structure.

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