Alternating current charging and discharging mobile energy storage device

Abstract

The utility model relates to mobile energy storage technical field, specifically is a kind of AC charging and discharging mobile energy storage equipment, including mobile vehicle and energy storage container, the energy storage container inside includes liquid cooling unit cabin, battery cabin and electrical cabin, the battery cabin inside is provided with installation passageway, the one side of two-way energy storage converter is provided with air duct, the one side screw of air duct is fixed with sealing strip, the one side screw of two-way energy storage converter is fixed with V louver and S louver, the liquid cooling unit cabin inside is bolted with liquid cooling unit, the battery cabin inside is bolted with battery pack, the one side bolt of battery pack is connected with high pressure box, the one side bolt of high pressure box away from battery pack is connected with two-way energy storage converter;Electrochemical energy storage and battery management system, AC charging and discharging system, fire-fighting system, liquid cooling system, vehicle integrated integrated design are achieved low carbon emission reduction, flexible transfer.

Description

Technical Field

[0001] This utility model relates to the field of mobile energy storage technology, specifically to an AC charging and discharging mobile energy storage device. Background Technology

[0002] Driven by global "dual carbon" goals, the need for alternatives to traditional fossil fuels is urgent. Mobile energy storage vehicles, with lithium batteries at their core, replace high-polluting equipment such as diesel generators, significantly reducing carbon emissions and lowering electricity costs. Thanks to their mobility and rapid response capabilities, mobile energy storage vehicles have become critical emergency power sources in scenarios such as natural disasters and power grid failures. For example, in disaster relief, they can provide plug-and-play power to communication base stations, emergency lighting, and rescue equipment in disaster areas, quickly restoring critical infrastructure operations; in power grid maintenance, they can replace traditional diesel power vehicles, supporting uninterrupted work and reducing the impact of power outages on residential and industrial users; and in ensuring power supply for large-scale events such as film shooting, concerts, and sporting events, they guarantee a stable power supply and prevent event interruptions. However, due to the complex operating conditions of mobile energy storage vehicles, higher requirements are placed on the system's vibration resistance, safety, and power quality stability.

[0003] However, existing AC charging and discharging mobile energy storage devices use conventional fixed energy storage design methods. When mobile energy storage is used on bumpy roads, there is a risk of component installation failure, especially the battery pack installation method. Some solutions directly use bidirectional energy storage converters to supply power to the load, which may result in excessive load impact affecting the life of the converter or unstable power quality affecting the normal operation of the load equipment. Therefore, an AC charging and discharging mobile energy storage device is needed. Utility Model Content

[0004] To address the problems in the background art, this utility model provides an AC charging and discharging mobile energy storage device.

[0005] The technical solution adopted by this utility model to solve its technical problem is an AC charging and discharging mobile energy storage device, including a mobile vehicle and an energy storage container. The energy storage container includes a liquid cooling unit compartment, a battery compartment, and an electrical compartment. An installation channel is provided inside the battery compartment. An air duct is provided on one side of the bidirectional energy storage converter. A sealing strip is screwed to one side of the air duct. V-shaped louvers and S-shaped louvers are screwed to one side of the bidirectional energy storage converter. A liquid cooling unit is bolted to the inside of the liquid cooling unit compartment. A battery pack is bolted to the inside of the battery compartment. A high-voltage box is bolted to one side of the battery pack. The bidirectional energy storage converter is bolted to the side of the high-voltage box away from the battery pack. A fire protection system is provided inside the energy storage container.

[0006] By adopting the above technical solutions, the bidirectional energy storage converter features air ducts for both air intake and exhaust. A compressible sealing strip is designed at the contact point between the air duct and the door panel to reduce heat exchange with the battery compartment. The bottom-in, top-out door panel louvers, with V-shaped and S-shaped louvers, promote hot air upwards and cold air downwards, preventing short circuits between hot and cold airflows. The isolation transformer reduces electromagnetic interference from electrical equipment, improving equipment lifespan and stability. Multiple access points are provided between the bidirectional energy storage converter and the high-voltage box, facilitating DC connection of other battery clusters to mobile devices and sharing AC equipment, reducing equipment investment costs. The AC confluence of multiple battery clusters enables the system to have high-power AC charging and discharging capabilities, while also allowing for low-power discharge of some battery clusters as needed to reduce losses.

[0007] Specifically, a bottom plate is welded to the bottom of the energy storage container, a top plate is welded to the top of the energy storage container, a battery rack column is welded to one side of the bottom plate, and the end of the battery rack column away from the bottom plate is welded to the outside of the top plate.

[0008] By adopting the above technical solution, the battery rack columns are welded to the middle of the top and bottom plates of the energy storage container, making the entire energy storage container a structural whole and improving its vibration resistance.

[0009] Specifically, the electrical compartment includes a transformer area and an electrical distribution operation area. An isolation transformer is bolted inside the transformer area. An electrical distribution operation area is located at the rear of the electrical compartment. A charging and discharging distribution cabinet is bolted to the lower layer of the electrical distribution operation area. An auxiliary distribution box is bolted to the upper layer of the electrical distribution operation area. A cable storage compartment is located inside the lower layer of the electrical distribution operation area.

[0010] By adopting the above technical solutions, the electrical compartment combines planar and spatial design to separate the transformer area from the electrical distribution operation area, thereby facilitating daily operation and maintenance.

[0011] Specifically, the energy storage container has several fixed points on its inner side.

[0012] By adopting the above technical solution, the energy storage container is designed with multiple fixing points along the length of the battery pack to prevent excessive amplitude of the battery pack during transportation.

[0013] Specifically, the mobile vehicle has a corner fitting bolted to one side for connection with the energy storage container.

[0014] By adopting the above technical solution, the energy storage container is fixed to the floor of the moving vehicle with multiple bolts through corner fittings, so that the container and the vehicle frame are integrated and its vibration resistance is improved.

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

[0016] (1) The AC charging and discharging mobile energy storage device described in this utility model has an isolation transformer that can reduce electromagnetic interference of electrical equipment and improve the service life and stability of the equipment; the bidirectional energy storage converter and the high voltage box are equipped with multiple access points, which facilitates the DC end of other battery clusters to be connected to the mobile device and share the AC end equipment, thereby reducing the equipment investment cost; the AC convergence of multiple battery clusters enables the system to have a high-power AC charging and discharging function, and at the same time, it can turn on low-power discharge and turn off some battery clusters as needed to reduce losses.

[0017] (2) The AC charging and discharging mobile energy storage device described in this utility model has a battery rack integrated with the base plate and top plate, which greatly improves the strength and rigidity of the entire load-bearing area of ​​the container. Multiple fixed points are designed at the contact part between the battery pack length direction and the battery rack guide rail, so that it meets the requirements of multiple transportation conditions of the vehicle and complies with the requirements of vertical random vibration when the vehicle is driving according to national standards.

[0018] (3) The AC charging and discharging mobile energy storage device described in this utility model has a separate compartment design for the battery compartment, liquid cooling unit and electrical compartment inside the container, which can effectively isolate the heat transfer of the battery compartment and play a flame-retardant role; the installation channel between the battery clusters is designed to facilitate the installation and fixing of the battery pack in the length direction and the subsequent operation and maintenance of the equipment.

[0019] (4) The AC charging and discharging mobile energy storage device described in this utility model has an independent air duct for the air inlet and outlet of the bidirectional energy storage converter to reduce the convection of hot and cold air with the battery compartment. The design of the V-shaped louver for the air outlet and the S-shaped louver for the air inlet effectively prevents the short circuit of hot and cold air.

[0020] (5) The AC charging and discharging mobile energy storage device described in this utility model adopts a design method that combines planar and spatial design in the electrical compartment, which can not only make full use of the space, but also facilitate the user's daily operation of the equipment. The cable storage compartment is designed so that the equipment cables can be neatly arranged when not in operation. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of an AC charging and discharging mobile energy storage device according to the present invention.

[0023] Figure 2 This is a schematic diagram of the component structure of an AC charging and discharging mobile energy storage device according to the present invention;

[0024] Figure 3 This is a schematic diagram of the system principle structure of an AC charging and discharging mobile energy storage device according to the present invention;

[0025] Figure 4This is a schematic diagram of the battery rack structure of an AC charging and discharging mobile energy storage device according to the present invention.

[0026] Figure 5 This is a schematic diagram of the battery pack fixing point structure of an AC charging and discharging mobile energy storage device according to the present invention.

[0027] Figure 6 This is a schematic diagram of the compartment partition structure of an AC charging and discharging mobile energy storage device according to the present invention.

[0028] Figure 7 This is a schematic diagram of the air duct structure of the bidirectional energy storage converter of the AC charging and discharging mobile energy storage device of this utility model;

[0029] Figure 8 This is a schematic diagram of the electrical compartment structure of an AC charging and discharging mobile energy storage device according to this utility model.

[0030] In the diagram: 1. Mobile vehicle; 2. Energy storage container; 3. Battery pack; 4. High-voltage box; 5. Bidirectional energy storage converter; 6. Isolation transformer; 7. Charge / discharge distribution cabinet; 8. Auxiliary distribution box; 9. Liquid-cooled unit; 10. Fire protection system; 11. Corner fittings; 12. Battery rack column; 13. Base plate; 14. Top plate; 15. Fixing point; 16. Liquid-cooled unit compartment; 17. Battery compartment; 18. Electrical compartment; 19. Installation passage; 20. Air duct; 21. Sealing strip; 22. V-shaped louver; 23. S-shaped louver; 24. Transformer area; 25. Electrical distribution operation area; 26. Cable storage compartment. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0032] To achieve low-carbon emission reduction and flexible relocation, as one embodiment of this utility model, such as Figures 1 to 8 As shown, the present invention discloses an AC charging and discharging mobile energy storage device, comprising a mobile vehicle 1 and an energy storage container 2. The energy storage container 2 includes a liquid cooling unit compartment 16, a battery compartment 17, and an electrical compartment 18. The battery compartment 17 has an installation channel 19. A ventilation duct 20 is provided on one side of the bidirectional energy storage converter 5. A sealing strip 21 is screwed to one side of the ventilation duct 20. A V-shaped louver 22 and an S-shaped louver 23 are screwed to one side of the bidirectional energy storage converter 5. A liquid cooling unit 9 is bolted to the inside of the liquid cooling unit compartment 16. A battery pack 3 is bolted to the inside of the battery compartment 17. A high-voltage box 4 is bolted to one side of the battery pack 3. The bidirectional energy storage converter 5 is bolted to the side of the high-voltage box 4 away from the battery pack 3. A fire protection system 10 is provided inside the energy storage container 2.

[0033] During use, the bidirectional energy storage converter 5 is designed with air inlet and outlet ducts 20. The part of the air duct 20 that contacts the door panel is designed with a compressible sealing strip 21 to reduce heat exchange with the battery compartment 17. The door panel louvers with bottom inlet and top outlet are designed with V-shaped louvers 22 and S-shaped louvers 23 to promote hot air to rise and cold air to enter from the bottom, preventing short circuit between hot and cold air. The isolation transformer 6 can reduce electromagnetic interference of electrical equipment and improve the service life and stability of the equipment. The bidirectional energy storage converter 5 and the high-voltage box 4 are provided with multiple access points, which can facilitate the DC end of other battery clusters to be connected to mobile devices and share AC end equipment, reducing equipment investment costs. The AC convergence of multiple battery clusters enables the system to have high-power AC charging and discharging functions. At the same time, it can also turn on low-power discharge and shut down some battery clusters as needed to reduce losses.

[0034] To improve vibration resistance, for example, such as Figure 4 As shown, the present invention also includes a bottom plate 13 welded to the bottom of the energy storage container 2, a top plate 14 welded to the top of the energy storage container 2, a battery rack column 12 welded to one side of the bottom plate 13, and the end of the battery rack column 12 away from the bottom plate 13 welded to the outside of the top plate 14.

[0035] When in use, the battery rack column 12 is welded between the top plate 14 and the bottom plate 13 of the energy storage container 2, so that the entire cabin of the energy storage container 2 becomes a structural whole, improving its vibration resistance.

[0036] For ease of daily operation and maintenance, for example, such as Figure 2 and Figure 8 As shown, this utility model also includes an electrical compartment 18 comprising a transformer area 24 and an electrical distribution operation area 25. An isolation transformer 6 is bolted inside the transformer area 24. The electrical distribution operation area 25 is located at the rear of the electrical compartment 18. A charging and discharging distribution cabinet 7 is bolted to the lower layer of the electrical distribution operation area 25. An auxiliary distribution box 8 is bolted to the upper layer of the electrical distribution operation area 25. A cable storage compartment 26 is located inside the lower layer of the electrical distribution operation area 25.

[0037] When in use, the electrical compartment 18 adopts a combination of planar and spatial design to separate the transformer area 24 from the electrical distribution operation area 25, thereby facilitating daily operation and maintenance.

[0038] To avoid excessive vibration of battery pack 3 during transportation, for example, such as Figure 5 As shown, the present invention also includes a number of fixing points 15 provided on the inner side of the energy storage container 2.

[0039] During use, the energy storage container 2 has multiple fixing points 15 along the length of the battery pack 3 to prevent excessive vibration of the battery pack 3 during transportation.

[0040] To improve vibration resistance, for example, such as Figure 2 As shown, the present invention also includes a corner piece 11 bolted to one side of the mobile vehicle 1 and connected to the energy storage container 2.

[0041] When in use, the energy storage container 2 is fixed to the floor of the mobile vehicle 1 by multiple bolts through corner fittings 11, so that the container and the vehicle frame are integrated to improve its vibration resistance.

[0042] In use, the isolation transformer 6 inside the energy storage container 2 reduces electromagnetic interference to electrical equipment, improving equipment lifespan and stability. The bidirectional energy storage converter 5 and high-voltage box 4 have multiple access points, facilitating DC-side connection to other battery clusters to mobile devices and sharing AC-side equipment, thus reducing equipment investment costs. The AC confluence of multiple battery clusters enables the system to have high-power AC charging and discharging capabilities. It also allows for low-power discharging and shutdown of some battery clusters as needed to reduce losses. Furthermore, the integrated welding design of the battery rack with the base plate 13 and top plate 14 significantly enhances the strength and rigidity of the entire load-bearing area. Multiple fixing points 15 are designed at the contact points between the battery pack 3 and the battery rack guide rail along its length, meeting the requirements of various vehicle transportation scenarios and complying with national vehicle standards. To meet the requirements of vertical random vibration during vehicle operation, the separate compartment design of the battery compartment 17, liquid cooling unit 9, and electrical compartment 18 within the container effectively isolates heat transfer from the battery compartment 17 and provides flame retardancy. The installation channel 19 between the battery clusters facilitates the installation and fixing of the battery pack 3 along its length and subsequent maintenance and repair. Meanwhile, the bidirectional energy storage converter 5 has independent air ducts 20 for its air intake and exhaust to reduce the convection of hot and cold air with the battery compartment 17. The design of the exhaust V-shaped louver 22 and the intake S-shaped louver 23 effectively prevents short circuits between hot and cold airflows. The electrical compartment 18 adopts a design that combines planar and spatial design, which not only makes full use of space but also facilitates daily operation of the equipment. The cable storage compartment 26 allows the equipment cables to be neatly arranged when not in operation.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An AC charging and discharging mobile energy storage device, characterized in that, The container includes a mobile vehicle (1) and an energy storage container (2). The energy storage container (2) includes a liquid cooling unit compartment (16), a battery compartment (17), and an electrical compartment (18). The battery compartment (17) has an installation channel (19). A duct (20) is provided on one side of the bidirectional energy storage converter (5). A sealing strip (21) is screwed on one side of the duct (20). A V-shaped louver (22) and an S-shaped louver (23) are screwed on one side of the bidirectional energy storage converter (5). A liquid cooling unit (9) is bolted inside the liquid cooling unit compartment (16). A battery pack (3) is bolted inside the battery compartment (17). A high-voltage box (4) is bolted on one side of the battery pack (3). A bidirectional energy storage converter (5) is bolted on the side of the high-voltage box (4) away from the battery pack (3). A fire protection system (10) is provided inside the energy storage container (2). A bottom plate (13) is welded to the bottom of the energy storage container (2). The energy storage container (2) has a top plate (14) welded to the top inside. A battery rack column (12) is welded to one side of the bottom plate (13), and the end of the battery rack column (12) away from the bottom plate (13) is welded to the outside of the top plate (14). The electrical compartment (18) includes a transformer area (24) and an electrical distribution operation area (25). An isolation transformer (6) is bolted inside the transformer area (24). An electrical distribution operation area (25) is set at the rear of the electrical compartment (18). A charging and discharging distribution cabinet (7) is bolted to the lower layer of the electrical distribution operation area (25). An auxiliary distribution box (8) is bolted to the upper layer of the electrical distribution operation area (25). A cable storage compartment (26) is set inside the lower layer of the electrical distribution operation area (25). A fixing point (15) is set inside the energy storage container (2), and the number of fixing points (15) is several. A corner piece (11) connected to the energy storage container (2) is bolted to one side of the mobile vehicle (1).

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