Portable energy storage device and bidirectional direct current conversion power supply device

Abstract

The utility model relates to the technical field of energy storage power supply, and proposes a portable energy storage device and a bidirectional direct current conversion power supply device, which comprises a fixing frame and a plurality of battery modules, the plurality of battery modules can be stacked and arranged in the fixing frame to form an integrated battery unit, the fixing frame comprises a battery rack and a reinforcing support, the battery rack comprises a battery bottom plate and a battery top plate, and the battery modules are arranged between the battery bottom plate and the battery top plate after being stacked, and the reinforcing support comprises an L-shaped support body and a locking device. The energy storage battery structure is modularized and stacked, the portable energy storage device is quickly built and disassembled, the reinforcing support with the upper and lower clamping structures is arranged, the stable stacking and quick fixing of the battery modules are realized, and the deployment efficiency and safety of the portable energy storage device in complex terrain are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of energy storage power supply, specifically to a portable energy storage device and a bidirectional DC-DC converter power supply device. Background Technology

[0002] The statements in this section are merely background information related to this utility model and do not necessarily constitute prior art.

[0003] With the rapid deployment of communication infrastructure nationwide, the continuous power supply to communication base stations, as core nodes of the communication network, is crucial for ensuring uninterrupted communication. Especially in emergencies such as natural disasters and power outages, providing reliable emergency power to communication base stations becomes a pressing issue. Mobile bidirectional DC-DC converter systems, due to their bidirectional energy conversion capabilities and portability potential, have become an important development direction for emergency power supply equipment.

[0004] The inventors discovered in their research that common emergency power supply solutions primarily employ power supply devices fixedly installed in vehicles, relying on the vehicle's battery to supply power to communication base stations via cables. However, in practical applications, communication base stations are often located in remote or complex terrains (such as mountains, rooftops, and narrow alleyways), making them difficult for vehicles to access, resulting in insufficient cable length and inability to connect to the power supply interface. Additionally, there are solutions using separate batteries for power supply, enabling on-site deployment through individual unit transport. However, this method presents safety hazards during on-site assembly due to the risk of battery stacking tipping over and poor stability, and is cumbersome and inefficient. Overall, existing technologies still have significant shortcomings in the mobility, safety, and ease of deployment of emergency power supply devices, affecting their effectiveness in complex environments. Utility Model Content

[0005] To address the aforementioned problems, this invention proposes a portable energy storage device and a bidirectional DC-DC converter power supply device. It adopts a modular stacked energy storage battery structure to enable rapid assembly and disassembly of the portable energy storage device. Furthermore, by setting up a reinforcement bracket with upper and lower clamping structures, it achieves stable stacking and rapid fixation of the battery modules, thereby improving the deployment efficiency and safety of the portable energy storage device in complex terrain.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] One or more embodiments provide a portable energy storage device, including a mounting frame and multiple battery modules, wherein the multiple battery modules can be stacked and arranged in the mounting frame to form an integrated battery unit, and the mounting frame includes a battery rack and a reinforcing bracket;

[0008] The battery rack includes a battery base plate and a battery top plate. The battery modules are stacked and placed between the battery base plate and the battery top plate. The reinforcement bracket includes an L-shaped bracket body and a locking device. One end of the L-shaped bracket body is set with an L-shaped bend to form a snap-fit ​​structure with the bottom surface of the battery base plate. The other end extends vertically to form a vertical support plate. The locking device is set at the end of the vertical support plate.

[0009] The locking device includes a movable buckle and a locking knob. The movable buckle is installed through the end of the vertical support plate and is opposite to the L-shaped bend. The movable buckle is provided with a threaded hole, and the locking knob locks the movable buckle to the top plate of the battery through the threaded hole.

[0010] One or more embodiments provide a bidirectional DC-DC converter power supply device, including an energy storage device and a bidirectional DC-DC converter;

[0011] An energy storage device, employing one of the aforementioned portable energy storage devices, is used to provide electrical power.

[0012] A bidirectional DC-DC converter is used to convert the supplied electrical energy so that the power output meets the set requirements.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This implementation adopts a modular stacked energy storage battery structure, solving the problems of difficult deployment and limited cable length in complex terrain caused by vehicle-mounted cable power supply. It also improves upon the shortcomings of poor on-site stacking stability and complex operation of separate batteries. By constructing an integrated stacking structure with upper and lower clamping and reinforcement brackets for auxiliary fixation, the on-site setup efficiency and structural stability of the portable energy storage device are improved, avoiding safety hazards such as battery module slippage or tipping. It is suitable for flexible application in various complex environments such as mountainous areas, rooftops, and alleyways, significantly improving the practicality, safety, and deployment convenience of the emergency power supply system.

[0015] The advantages and additional benefits of this utility model will be described in detail in the following specific embodiments. Attached Figure Description

[0016] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute a limitation thereof.

[0017] Figure 1 This is a schematic diagram of the structure of a bidirectional DC-DC converter power supply device according to Embodiment 2 of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of a portable energy storage device according to Embodiment 1 of this utility model;

[0019] Figure 3 This is a schematic diagram of the battery module of Embodiment 1 of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of a portable energy storage device with an added reinforcing support according to Embodiment 1 of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the battery module with the first quick connector on the side according to Embodiment 1 of this utility model;

[0022] The components include: 1. Energy storage device; 2. Bidirectional DC-DC converter; 3. Battery module; 4. Battery base plate; 5. First quick connector; 6. Handle; 7. Reinforcing bracket; 8. Positioning strip; 9. Battery top plate; 31. First limiting strip; 32. First limiting block; 33. Second limiting block; 34. Protruding strip; 35. Connecting strip; 71. Movable buckle; 72. Locking knob; 81. Fixing screw; 82. Positioning hole. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0025] It should be noted that the terminology used herein is for descriptive purposes only and is not intended to limit the exemplary embodiments according to this invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. It should be noted that, without conflict, the various embodiments and features within those embodiments can be combined with each other. The embodiments will now be described in detail with reference to the accompanying drawings.

[0026] Example 1

[0027] In one or more of the technical solutions disclosed in the embodiments, such as Figures 1 to 5 As shown, a portable energy storage device 1 includes a mounting frame and multiple battery modules 3. The multiple battery modules 3 can be stacked and arranged in the mounting frame to form an integrated battery unit. The mounting frame includes a battery rack and a reinforcing bracket 7.

[0028] The battery rack includes a battery base plate 4 and a battery top plate 9. The battery modules 3 are stacked and placed between the battery base plate 4 and the battery top plate 9. The reinforcing bracket 7 includes an L-shaped bracket body and a locking device. One end of the L-shaped bracket body is set with an L-shaped bend to form a snap-fit ​​structure with the bottom surface of the battery base plate 4. The other end extends vertically to form a vertical support plate. The end of the vertical support plate is provided with a locking device.

[0029] The locking device includes a movable buckle 71 and a locking knob 72. The movable buckle 71 is disposed through the end of the vertical support plate and is opposite to the L-shaped bend. The movable buckle 71 is provided with a threaded hole, and the locking knob 72 locks the movable buckle 71 to the battery top plate 9 through the threaded hole.

[0030] This implementation method achieves rapid assembly and disassembly of portable energy storage devices by constructing a modular stacked energy storage battery structure. In specific operation, the battery base plate 4 is first placed horizontally on the ground, and multiple battery modules 3 are stacked vertically on it from bottom to top. Then, the battery top plate 9 is covered to form an upper and lower clamping structure. The L-shaped bracket body of the reinforcing support 7 engages with the bottom surface of the battery base plate 4 through an L-shaped bend at one end, while the vertical support plate at the other end extends upward to the height of the battery top plate 9. The movable buckle 71 at its end can be fastened by a threaded hole and a locking knob 72, thereby pressing the movable buckle 71 against the upper surface of the battery top plate 9, forming a bottom-to-top reinforced clamping structure. This structure improves the stability and overall rigidity of the entire battery module stacking system, preventing risks such as tipping or displacement during use.

[0031] This implementation addresses the challenges of deploying vehicle-mounted cable power supplies in complex terrains and the limitations of cable length. It also improves upon the poor stability and complex operation associated with stacking separate batteries on-site. By constructing an integrated stacking structure with clamping at both ends and reinforced by a support bracket, the on-site setup efficiency and structural stability of the portable energy storage device are enhanced. This avoids the safety hazards of battery module slippage or tipping, making it suitable for flexible applications in various complex environments such as mountainous areas, rooftops, and alleyways. It significantly improves the practicality, safety, and ease of deployment of emergency power supply systems.

[0032] In some embodiments, such as Figure 3As shown, to achieve rapid and stable stacking of battery modules 3, a limiting frame is provided at the upper end of each battery module 3. The limiting frame includes a first limiting strip 31, a first limiting block 32, a second limiting block 33, and a connecting strip 35. The first limiting strip 31 is fixed to the first side of the battery module 3, and the shape of the first limiting strip 31 matches the shape of the first side. The upper surface of the first limiting strip 31 is higher than the upper surface of the battery module 3 by a set distance. The first limiting block 32 and the second limiting block 33 are located at the top corners of the opposite sides of the first side, and the upper surfaces of the first limiting block 32 and the second limiting block 33 are higher than the upper surface of the battery module 3 by a set distance. The connecting strip 35 is used to connect the first limiting strip 31, the first limiting block 32, and the second limiting block 33 to form an integral frame structure above the battery module 3.

[0033] Specifically, in this embodiment, the two connecting strips 35 are respectively located between the first limiting strip 31 and the first limiting block 32, and between the first limiting strip 31 and the second limiting block 33;

[0034] Optionally, a first quick connector 5 is provided on the opposite side of the first side; the first quick connector 5 is used to connect to external devices to realize the output of electrical energy; the side where the first quick connector 5 is provided is also provided with various interfaces and buttons, as shown in the specific example. Figure 5 The enlarged image shown corresponds to Figure 4 Area A. It should be noted that... Figure 1 Figure 3 as well as Figure 5 The side structure of the first quick connector 5 is the same, and both can be adopted. Figure 5 The structure shown;

[0035] Optionally, the first limiting strip 31, the first limiting block 32, and the second limiting block 33 can be fixed to the battery module 3 by screws respectively;

[0036] Optionally, the connecting strip 35 is disposed on the upper surface of the battery module 3 and is flush with the housing of the battery module 3; being flush with the housing of the battery module 3 means that it does not protrude from the edge of the housing;

[0037] In the above embodiment, the first limiting strip 31, the first limiting block 32, and the second limiting block 33 protrude from the top of the battery module 3 by a predetermined distance, which serves as a limiting function. The connecting strip 35 is flush with the housing of the battery module 3 to facilitate the placement of bolts for mounting on the battery top plate 9, thereby making it easier to mount the battery top plate 9 onto the battery module 3 by bolts.

[0038] When in use, the upper battery module 3 can be placed directly within the limiting frame of the lower battery module 3, which can improve the battery assembly efficiency and also improve stability.

[0039] It is possible to provide multiple protruding strips 34 on the upper and lower surfaces of the battery module 3. The positions of the protruding strips 34 of the stacked battery modules 3 correspond to each other. When the battery modules 3 are stacked, a heat dissipation space is formed on the contact surface between the battery modules 3.

[0040] A further technical solution is that the portion of the first limiting strip 31, the first limiting block 32, or / and the second limiting block 33 of the limiting frame that protrudes above the upper surface of the battery module 3 can be provided with a first limiting hole, and a limiting pin is provided on the first limiting hole. A second limiting hole is provided on the bottom side of the battery module 3. The second limiting hole provided on the upper battery module 3 corresponds to the first limiting hole provided on the lower battery module 3, and the connection is achieved through the limiting pin.

[0041] Optionally, the limiting pin can be pulled into the first limiting hole by a compression spring; the opening direction of the first limiting hole and the second limiting hole is horizontal, which can realize the lateral fixation of the outer limiting frame and the battery module 3.

[0042] In this embodiment, positioning pins and compression springs are added to the first limiting strip 31, the first limiting block 32, and / or the second limiting block 33 of the limiting frame. When the upper and lower batteries are installed, the positioning pins extend under the action of the springs and engage with the second limiting holes provided on the batteries, thereby fixing the upper and lower positions of the two adjacent battery modules 3. When disassembly and installation are required, the pull ring connected to the positioning pins is pulled.

[0043] One possible implementation is that, for ease of carrying, each battery module 3 is provided with a handle 6;

[0044] In this technical solution, each battery module 3 has approximately 2.5 kWh of power. Multiple batteries are stacked and connected to achieve power accumulation. For example, setting 20 power modules 3 can provide 50 kWh of power. The outer shell of the battery module 3 is a die-cast aluminum shell, and the handle 6 of the battery module 3 can be lifted for transportation.

[0045] A further technical solution is provided: each battery module 3 has a positioning strip 8 on its housing, and the positioning strips 8 of two stacked battery modules 3 are positioned correspondingly; positioning holes 82 are provided in the positioning strips 8, and the positioning holes 82 of two stacked battery modules 3 are connected by positioning pins.

[0046] Optionally, a pull rope is fixedly installed on the positioning strip 8, and the free end of the pull rope is connected to the positioning pin;

[0047] This is feasible; the positioning strip 8 can be set on the surface of the battery module 3 by setting the fixing screw 81.

[0048] In use, the positioning pin of the lower battery is set in the positioning hole 82, and the upper battery module 3 is directly aligned with the positioning pin through the positioning hole 82 of the positioning strip 8, so that the upper and lower battery modules 3 are placed in alignment, which can improve the stability of the upper and lower batteries.

[0049] In the above embodiment, the positioning pin is connected to the power module 3 by a pull rope, which prevents the positioning pin from being lost during the transportation of the power module 3. At the same time, the fixing method of the pull rope can also provide room for the positioning pin to move, making it easy for the positioning pin to be inserted into the positioning hole 82.

[0050] In this embodiment, for the split-structure energy storage device, three fixing methods are provided: positioning bar 8, limiting frame and reinforcing bracket 7. All of these can improve the stability of the stacked battery modules. At least one of these methods can be selected, or they can be set simultaneously. All of these are within the protection scope of the solution in this embodiment.

[0051] Example 2

[0052] Based on Embodiment 1, this embodiment provides a bidirectional DC-DC converter power supply device, including an energy storage device 1 and a bidirectional DC-DC converter 2;

[0053] Energy storage device 1, using a portable energy storage device 1 as described in Embodiment 1, is used to provide power supply energy;

[0054] The bidirectional DC-DC converter 2 is used to convert the supplied electrical energy so that the power output meets the set requirements. It includes a DC-DC module, a monitoring module, a protection device, and a second quick connector.

[0055] The first quick connector 5 and the second quick connector are electrically connected to realize the electrical connection between the energy storage device 1 and the bidirectional DC-DC converter 2.

[0056] In this embodiment, the bidirectional DC-DC converter 2 is an existing device.

[0057] Optionally, the side where the second quick connector of the bidirectional DC-DC converter 2 is located is in the same direction as the side where the first quick connector is located; that is, the second quick connector of the bidirectional DC-DC converter 2 and the first quick connector of the battery module are oriented in the same direction, so as to facilitate connection by wires.

[0058] In some embodiments, a fixing hole is provided on the top plate of the battery of the energy storage device 1, and the bidirectional DC-DC converter 2 can be fixed on the top plate of the battery by threaded connection, so as to fix the bidirectional DC-DC converter 2 on the energy storage device 1.

[0059] Once the equipment arrives on site, battery modules 3 are placed on the battery base plate 4 and stacked, up to 5 layers on each side. The battery base plate 4 has slots to limit the movement of the battery modules; the upper and lower battery modules 5 are stably positioned using these limiting structures; up to 20 battery modules can be used, providing a total of 50 kWh of energy. After stacking, the battery top plate 9 is placed on the topmost battery module 3, and the energy storage device is further secured by the reinforcing bracket 7. The bidirectional DC-DC converter 2 is placed on the battery top plate 9 and secured using a threaded, detachable connection.

[0060] This embodiment integrates a bidirectional DC-DC converter 2 onto a portable energy storage device 1, achieving an integrated configuration of energy storage and power conversion modules. This configuration offers advantages such as compact structure, convenient deployment, and quick wiring. The first and second quick connectors are arranged on the same side, optimizing the connection method and reducing wiring complexity. The detachable installation design enhances the modularity of the equipment, facilitating transportation, installation, and maintenance. It is particularly suitable for rapid response and stable operation in scenarios such as emergency power supply and field deployment.

[0061] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0062] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A portable energy storage device, characterized by: It includes a mounting frame and multiple battery modules, which can be stacked and arranged in the mounting frame to form an integrated battery unit. The mounting frame includes a battery rack and a reinforcing bracket. The battery rack includes a battery base plate and a battery top plate. The battery modules are stacked and placed between the battery base plate and the battery top plate. The reinforcement bracket includes an L-shaped bracket body and a locking device. One end of the L-shaped bracket body is set with an L-shaped bend to form a snap-fit ​​structure with the bottom surface of the battery base plate. The other end extends vertically to form a vertical support plate. The locking device is set at the end of the vertical support plate. The locking device includes a movable buckle and a locking knob. The movable buckle is installed through the end of the vertical support plate and is opposite to the L-shaped bend. The movable buckle is provided with a threaded hole, and the locking knob locks the movable buckle to the top plate of the battery through the threaded hole.

2. A portable energy storage device as claimed in claim 1, wherein: A limiting frame is provided at the upper end of the battery module. The limiting frame includes a first limiting strip, a first limiting block, a second limiting block, and a connecting strip. The first limiting strip is fixed to the first side of the battery module, and the shape of the first limiting strip matches the first side. The upper end of the first limiting strip is higher than the upper surface of the battery module by a predetermined distance. The first limiting block and the second limiting block are located at the top corners of opposite sides of the first side, and the upper end of the first limiting block and the second limiting block are higher than the upper surface of the battery module by a predetermined distance. The connecting strip is used to connect the first limiting strip, the first limiting block, and the second limiting block to form an integral frame structure above the battery module.

3. A portable energy storage device as claimed in claim 2, wherein: A first quick connector is provided on the opposite side of the first side. The first quick connector is used to connect to external equipment to realize the output of electrical energy.

4. A portable energy storage device as claimed in claim 1, wherein: The connecting strip is located on the upper surface of the battery module and is flush with the battery module housing.

5. A portable energy storage device as claimed in claim 1, wherein: The portion of the first limiting strip, the first limiting block, and / or the second limiting block of the limiting frame that protrudes above the upper surface of the battery module is provided with a first limiting hole, and a limiting pin is provided on the first limiting hole. A second limiting hole is provided on the bottom side of the battery module. The second limiting hole on the upper battery module corresponds to the first limiting hole on the lower battery module, and the connection is achieved by the limiting pin.

6. A portable energy storage device as claimed in claim 5, wherein: The limiting pin is set in the first limiting hole by a compression spring.

7. A portable energy storage device as claimed in claim 1, wherein: The battery module housing is provided with positioning strips, and the positioning strips of two stacked battery modules are positioned correspondingly; positioning holes are provided in the positioning strips, and the positioning holes of two stacked battery modules are aligned and connected by positioning pins.

8. A portable energy storage device as described in claim 7, characterized in that: A pull rope is fixedly installed on the positioning strip, and the free end of the pull rope is connected to the positioning pin.

9. A portable energy storage device as claimed in claim 1, wherein: The battery module has a handle.

10. A bidirectional DC to DC converter power supply, characterized by: It includes an energy storage device and a bidirectional DC-DC converter; the energy storage device is a portable energy storage device as described in any one of claims 1-9, used to provide power supply energy; A bidirectional DC-DC converter is used to convert the supplied electrical energy so that the power output meets the set requirements.

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