Light storage integrated vehicle-mounted liquid cooling mobile energy storage square cabin

Abstract

The utility model discloses a light storage integrated vehicle-mounted liquid cooling mobile energy storage shelter, which comprises an energy storage shelter body, a photovoltaic panel is mounted at the top of the outer side of the energy storage shelter body, and a photovoltaic inverter electrically connected with the photovoltaic panel is fixed on the energy storage shelter body; a battery compartment is formed in the middle of the energy storage square cabin body; a plurality of liquid-cooled batteries PACK which are electrically connected in series are mounted in the battery bin, and a perfluorohexanone fire extinguishing device is arranged in each liquid-cooled battery PACK; the liquid-cooled batteries PACK are electrically connected in series and then electrically connected with the high-voltage control box, and the high-voltage control box is electrically connected with the liquid-cooled energy storage converter PCS; the photovoltaic inverter is electrically connected with the liquid cooling battery PACK; condensed aerosol fire extinguishing devices are installed at the lower left corner and the upper right corner of the top of the battery bin correspondingly. The energy storage shelter can be charged by adopting various power supplies, solar energy can be fully utilized by arranging the photovoltaic panel, the system reliability is improved by adopting a liquid cooling mode, and the safety of the energy storage shelter is improved by arranging a fire-fighting redundancy design.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and in particular to a vehicle-mounted liquid-cooled mobile energy storage container that integrates photovoltaic and energy storage. Background Technology

[0002] To facilitate the timely restoration of power to areas affected by power outages due to disasters, energy storage cabins have been invented, such as a high-safety energy storage cabin disclosed in utility model 2022215603232, and an integrated self-loading and unloading energy storage cabin charging station disclosed in utility model 201620019073X.

[0003] However, current energy storage modules have the following problems:

[0004] 1. Currently, none of the vehicle-mounted mobile energy storage system modules on the market are equipped with photovoltaic panels, inverters, and corresponding input interfaces. When the system battery needs charging, the battery compartment can only be transported to a specific charging location for charging, making charging relatively difficult.

[0005] 2. Currently, most vehicle-mounted mobile energy storage system cabins on the market use air cooling. In harsh outdoor working environments (such as environments with high dust and pollution), this will seriously affect the service life and safety performance of the battery pack and PCS. At the same time, air-cooled packs also have problems such as many single-point rotating parts and high single-point failure rate, which poses potential risks to the reliability of the system in actual use.

[0006] 3. Currently, vehicle-mounted mobile energy storage system cabins on the market are not equipped with fire extinguishing devices in the battery PACK compartment, resulting in insufficient fire safety protection. If a traffic accident occurs during vehicle transportation and causes a fire in the battery cabin, it is difficult to completely extinguish the fire using only the first-level fire extinguishing system.

[0007] 4. Currently, the vehicle-mounted mobile energy storage system cabins on the market are all designed for standalone power supply, and the applicable load environments are relatively simple. They cannot work together with diesel generators to complete the output power supply, which limits their ability to cope with complex power supply scenarios such as changing loads. Utility Model Content

[0008] To solve the above-mentioned technical problems, this utility model proposes an integrated photovoltaic and energy storage vehicle-mounted liquid-cooled mobile energy storage container.

[0009] The objective of this utility model is achieved through the following technical solution:

[0010] A vehicle-mounted liquid-cooled mobile energy storage container integrating photovoltaic and energy storage includes an energy storage container cabinet. A photovoltaic panel is installed on the top of the outer side of the cabinet, and a photovoltaic inverter electrically connected to the photovoltaic panel is fixed to the cabinet. A battery compartment is formed in the middle of the cabinet. Several series-connected liquid-cooled battery packs are installed inside the battery compartment, and each pack contains a perfluorohexanone fire extinguishing device. The series-connected liquid-cooled battery packs are then electrically connected to a high-voltage control box, which is electrically connected to a liquid-cooled energy storage converter (PCS). The photovoltaic inverter is electrically connected to the liquid-cooled battery packs. Thermal aerosol fire extinguishing devices are installed at the lower left corner and the upper right corner of the battery compartment. The liquid-cooled energy storage converter (PCS) is also electrically connected to a mains power interface and a diesel generator interface.

[0011] In a further improvement, the energy storage container cabinet has an electrical compartment and a liquid cooling unit compartment on its two sides respectively; the cold energy storage converter PCS is located in the electrical compartment, which is also equipped with a UPS uninterruptible power supply and power distribution control and switch protection components.

[0012] In a further improvement, a liquid cooling unit is installed inside the liquid cooling unit compartment, and the liquid cooling unit is connected to the liquid-cooled battery pack and the cold energy storage converter PCS through liquid cooling pipes.

[0013] A further improvement is made to the liquid cooling pipeline, which includes a primary main pipeline that connects to the battery-side secondary pipeline and the PCS-side secondary pipeline via an automatic vent valve tee. The battery-side secondary pipeline connects to the battery-side tertiary pipeline, and both the battery-side and PCS-side secondary pipelines are equipped with self-sealing quick-connect drainage devices at their lowest ends. The battery-side tertiary pipeline connects to the water nozzle of the battery PACK liquid cooling plate, and the PCS-side secondary pipeline connects to the liquid cooling plate of the cold energy storage converter PCS via a CQC connector.

[0014] As a further improvement, the energy storage container has an input / output interface panel installed at the lower part of the end door and an operation indicator element panel installed at the upper part.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. Compared with traditional vehicle-mounted mobile energy storage modules, this utility model can reduce the waste of photovoltaic resources, increase the charging convenience and versatility of the system's vehicle-mounted mobile energy storage module, effectively improve the overall system endurance, and adapt to more operating environments. At the same time, the electrical energy generated by photovoltaic power generation is stored in the battery, and can generate certain revenue when it is used for external power supply operations again, and this part of the revenue has almost no cost.

[0017] 2. Compared to traditional air-cooled batteries of the same capacity, the liquid-cooled battery pack of this invention is significantly smaller in size. Therefore, the volume of the vehicle-mounted liquid-cooled mobile energy storage container of this invention is also significantly smaller than that of an air-cooled mobile energy storage container with the same capacity, allowing it to be compatible with more vehicle models. Furthermore, the use of liquid-cooled packs and liquid cooling technology effectively mitigates the impact on equipment lifespan and system reliability under conditions of high pollution levels such as large amounts of dust and sand. Unlike air-cooled packs, it does not require air to be drawn into the pack for heat dissipation. Therefore, even when there is a large amount of dust or other impurities in the external air that could affect the safety of the battery cells, there is no need to worry about them entering the pack and causing damage or danger to the cells and components.

[0018] 3. The end face of this utility model is equipped with mains power input and output interfaces, diesel generator input and output interfaces, photovoltaic input interface, RS485 communication interface and network port. It can not only realize the overall coordination control and monitoring of the entire system, but also realize the control of multiple energy storage cabins to operate in parallel or the diesel generator and energy storage cabin to operate in linkage, and perform functions such as following output or input for different types of loads.

[0019] 4. This utility model adopts a dual fire-fighting redundancy design, installing a perfluorohexanone fire extinguishing device inside the battery pack and a thermal aerosol fire extinguishing device inside the cabin, achieving dual fire safety protection for this vehicle-mounted mobile energy storage cabin. When a fire occurs in a battery pack, the fire extinguishing device inside that pack will be immediately triggered to extinguish the fire. At the same time, the signal feedback device configured on the fire extinguishing device will immediately report the fire type to the integrated unit (EMS), and the system will immediately and automatically complete the power cut-off operation of the entire DC and AC systems. If the fire extinguishing device fails to completely extinguish the fire and the fire spreads into the cabin, the four thermal aerosol fire extinguishing devices installed inside the cabin will immediately activate to extinguish the fire inside the cabin. The entire system can effectively make up for the deficiencies and hidden dangers in the fire-fighting configuration of current vehicle-mounted mobile energy storage cabins on the market, greatly improving the system safety. Attached Figure Description

[0020] The present invention will be further described with reference to the accompanying drawings, but the content of the drawings does not constitute any limitation on the present invention.

[0021] Figure 1 A front view of a vehicle-mounted liquid-cooled mobile energy storage container without its hatch.

[0022] Figure 2 Left view of a vehicle-mounted liquid-cooled mobile energy storage container without its hatch.

[0023] Figure 3 This is a top view of a vehicle-mounted liquid-cooled mobile energy storage container.

[0024] Figure 4 Axonometric drawing of a vehicle-mounted liquid-cooled mobile energy storage container.

[0025] Figure 5 Left view of the liquid-cooled battery pack without its casing.

[0026] Figure 6 This is an isometric drawing of the liquid cooling piping.

[0027] Figure 7 A schematic diagram showing the connection between the mains power, diesel generator, and photovoltaic power supply.

[0028] The labeling is explained as follows:

[0029]

[0030] Detailed Implementation

[0031] To make the purpose, technical solution and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and examples.

[0032] Example 1

[0033] like Figure 1-7 The illustrated photovoltaic-storage integrated vehicle-mounted liquid-cooled mobile energy storage container includes a liquid-cooled battery pack, a liquid-cooled PCS (energy storage converter), a liquid-cooled unit, an integrated unit, liquid-cooled pipes, power distribution control components, input / output interface connectors, a UPS, photovoltaic panels, an inverter, auxiliary control system equipment (lighting, limit switches, dehumidification equipment, etc.), and a cabinet.

[0034] As a preferred technical solution for an integrated photovoltaic and energy storage vehicle-mounted liquid-cooled mobile energy storage container of this utility model, the energy storage system realizes the storage and release of electricity through five built-in 1P48S liquid-cooled battery packs (3). Each battery pack is equipped with a perfluorohexanone fire extinguishing device (301) to ensure fire safety within the pack. All battery packs are connected in series to a high-voltage control box 8 via power lines, and then output to a 100kW liquid-cooled PCS (7) to realize the AC / DC conversion, charging and discharging, and protection of the system. The system has a pure off-grid operation function, and uses a built-in UPS (5) as the system's starting power. To ensure that the batteries and PCS in the system always operate within the specified temperature range, the container is equipped with an 8kW liquid-cooled unit (1) and matching liquid-cooled pipelines 2 to control and regulate the temperature of the system's battery packs and PCS. Each of the two middle battery compartments is equipped with a thermal aerosol fire extinguishing device 4, located at the lower left corner and the upper right rear corner, for a total of four thermal aerosol fire extinguishing devices, ensuring fire safety within the compartments. The integrated management of the entire system, including charging and discharging control, equipment testing, diesel generator linkage control, and safety monitoring, is completed through an integrated unit installed on the compartment door and its onboard EMS system 14. The PCS AC side is equipped with a power distribution control and switch protection element 6, enabling control and protection of each output interface. The input / output interface panels 12 are all integrated at the lower part of the energy storage system cabin end door, equipped with high-protection-level connectors for quick and safe connection to load equipment. The operation indicator element panels 11 are all integrated at the upper part of the energy storage system cabin end door, equipped with meters, operation indicator lights, and emergency stop functions, facilitating monitoring, recording, and control during equipment operation. A photovoltaic panel 13 is installed on the top of the cabin, and a detachable photovoltaic inverter 10 is installed at the end of the cabin. When the system does not output power to the outside during the day, it can convert solar energy into electrical energy and power the system battery through the photovoltaic input interface in the input / output interface panel 12. This not only improves the convenience of system charging, but also greatly improves the battery life of the system, effectively extends the time for external power supply operation, and ensures system stability.

[0035] The liquid cooling pipeline adopts a design of primary main pipeline 201 + battery-side secondary pipeline 203 + battery-side tertiary pipeline 205 + PCS-side secondary pipeline 204. The highest point of the primary main pipeline is equipped with two automatic vent valve tees 202 for venting gas from the liquid cooling channels. At the end of the primary pipeline, two secondary pipelines branch off via the automatic vent valve tees 202, leading to the battery side and PCS side respectively. The PCS side pipeline directly connects to the PCS via a CQC connector to supply liquid cooling for both the battery and PCS. The battery side pipeline connects to the battery PACK liquid cooling plate nozzle via tertiary pipeline 205. Each battery compartment's secondary liquid cooling pipeline is equipped with a self-sealing quick-connect drain device 206 at its lowest point, enabling rapid drainage of coolant from the pipelines and battery PACK liquid cooling plates during maintenance.

[0036] This utility model discloses a vehicle-mounted liquid-cooled mobile energy storage container integrating photovoltaic and energy storage. Each compartment features an outward-opening door design, enabling rapid front-side maintenance of all equipment and making system maintenance extremely convenient. Simultaneously, the internal equipment is rationally arranged, ensuring the overall center of gravity of the system is located at the center of the energy storage container. This guarantees the safety and stability of the equipment during transportation and, when installed on the vehicle, will not cause excessive shift in the vehicle's center of gravity, effectively ensuring the safety of both the vehicle and the container during operation.

[0037] The beneficial effects of this utility model are as follows:

[0038] Currently, none of the vehicle-mounted mobile energy storage units on the market have photovoltaic panels, inverters, or corresponding photovoltaic input interfaces designed into the unit itself. On the one hand, during off-peak hours when the vehicle-mounted mobile energy storage unit is engaged in power supply operations, if there is sufficient sunlight, the system can utilize the photovoltaic panels installed on the roof to generate electricity. This electricity is then used to charge the batteries inside the unit via the inverter on the end face of the unit and the photovoltaic input connectors on the input / output interface panel. Compared to traditional vehicle-mounted mobile energy storage units, this reduces the waste of photovoltaic resources, increases the convenience and versatility of charging, effectively improves the overall system's range, and allows it to adapt to more operating environments. Simultaneously, the electricity generated by photovoltaic power generation is stored in the batteries, and can generate additional revenue when the unit is used for power supply operations again, with virtually no cost to this revenue.

[0039] Secondly, current vehicle-mounted mobile energy storage units all use air cooling, which has lower thermal management efficiency compared to liquid cooling systems. This results in a large temperature difference between battery cells, severely impacting their lifespan. The design of this invention reduces the temperature difference between cells to below 3°C, significantly extending their lifespan. Compared to traditional air-cooled systems of the same capacity, liquid-cooled battery packs are significantly smaller in size. Therefore, the volume of this vehicle-mounted liquid-cooled mobile energy storage unit is also significantly smaller than that of air-cooled mobile energy storage units with the same capacity, allowing it to be compatible with more vehicle models. Furthermore, the use of liquid-cooled packs and liquid cooling technology effectively mitigates the impact on equipment lifespan and system reliability under high-pollution conditions such as heavy dust and sandstorms. Unlike air-cooled packs, it does not require air to be drawn into the pack for heat dissipation. Therefore, even when there is a large amount of dust or other impurities in the external air that could affect battery cell safety, there is no need to worry about them entering the pack and causing damage or danger to the cells and components.

[0040] Furthermore, the integrated photovoltaic and energy storage vehicle-mounted liquid-cooled mobile energy storage container described in this utility model patent adopts a modular design, with mains input and output interfaces, diesel generator input and output interfaces, photovoltaic input interface, RS485 communication interface, and network port on the end face. The system is equipped with an integrated control unit (EMS), which not only realizes the overall coordinated control and monitoring of the entire system, but also enables the control of multiple energy storage containers to operate in parallel or the diesel generator and energy storage container to operate in conjunction, and provides functions such as following output or input for different types of loads.

[0041] Finally, current vehicle-mounted mobile energy storage modules on the market only have compartment-level fire suppression systems. These systems cannot control fires immediately if they occur within the battery pack; the fire suppression system only activates when the fire spreads into the compartment, posing a significant safety hazard. This design employs a dual fire suppression redundancy system, installing perfluorohexanone (PFH) fire suppression devices within the battery pack and thermal aerosol fire suppression devices within the compartment. This provides dual fire safety protection for the vehicle-mounted mobile energy storage module. When a fire occurs within a battery pack, the fire suppression device within that pack is immediately triggered. Simultaneously, the signal feedback device on the fire suppression device immediately reports the fire type to the integrated control unit (EMS), and the system automatically shuts off power to both the DC and AC systems. If the fire suppression device fails to completely extinguish the fire and it spreads into the compartment, the four thermal aerosol fire suppression devices installed inside the compartment will immediately activate to extinguish the fire within the compartment. This entire system effectively overcomes the deficiencies and hidden dangers in the fire suppression configurations of current vehicle-mounted mobile energy storage modules on the market, significantly improving system safety.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the essence and scope of the technical solution of this utility model.

Claims

1. A vehicle-mounted liquid-cooled mobile energy storage container integrating photovoltaic and energy storage, characterized in that, The system includes an energy storage container cabinet (9), on the top of the outer side of the energy storage container cabinet (9) is a photovoltaic panel (13), and a photovoltaic inverter (10) electrically connected to the photovoltaic panel (13) is fixed in the energy storage container cabinet (9); a battery compartment is formed in the middle of the energy storage container cabinet (9); several series-connected liquid-cooled battery packs (3) are installed in the battery compartment, and each liquid-cooled battery pack (3) is equipped with a perfluorohexanone fire extinguishing device (301); the liquid-cooled battery packs (3) are connected in series and then connected to a high-voltage control box (8), which is connected to a liquid-cooled energy storage converter PCS (7); the photovoltaic inverter (10) is electrically connected to the liquid-cooled battery packs (3); thermal aerosol fire extinguishing devices (4) are installed in the lower left corner and the upper right corner of the top of the battery compartment; the liquid-cooled energy storage converter PCS (7) is also electrically connected to a mains power interface and a diesel generator interface.

2. The integrated photovoltaic and energy storage vehicle-mounted liquid-cooled mobile energy storage container as described in claim 1, characterized in that, The energy storage container cabinet (9) has an electrical compartment and a liquid-cooled unit compartment on its two sides respectively; the liquid-cooled energy storage converter PCS (7) is located in the electrical compartment, and the electrical compartment is also equipped with a UPS uninterruptible power supply (5) and power distribution control and switch protection components (6).

3. The integrated photovoltaic and energy storage vehicle-mounted liquid-cooled mobile energy storage container as described in claim 2, characterized in that, The liquid cooling unit is installed in the liquid cooling unit compartment. The liquid cooling unit (1) is connected to the liquid cooling battery PACK (3) and the liquid cooling energy storage converter PCS (7) through the liquid cooling pipe (2).

4. The integrated photovoltaic and energy storage vehicle-mounted liquid-cooled mobile energy storage container as described in claim 3, characterized in that, The liquid cooling pipeline (2) includes a primary main pipeline (201), which is connected to the battery-side secondary pipeline (203) and the PCS-side secondary pipeline (204) via an automatic exhaust valve tee (202); the battery-side secondary pipeline (203) is connected to the battery-side tertiary pipeline (205); both the battery-side secondary pipeline (203) and the PCS-side secondary pipeline (204) are equipped with self-sealing quick-connect drain devices (206) at their lowest ends; the battery-side tertiary pipeline (205) is connected to the water nozzle of the battery PACK liquid cooling plate; and the PCS-side secondary pipeline (204) is connected to the liquid cooling plate of the liquid-cooled energy storage converter PCS (7) via a CQC connector.

5. The integrated photovoltaic and energy storage vehicle-mounted liquid-cooled mobile energy storage container as described in claim 1, characterized in that, The energy storage container has an input / output interface panel (12) installed at the lower part of the end door and an operation indicator element panel (11) installed at the upper part.

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