Modular, detachable, high-density energy storage device

Abstract

The utility model belongs to the field of charging energy storage technology, concretely relates to a modularization detachable high density energy storage device. Including box, be provided with distribution warehouse, high pressure box, PCS warehouse and battery storehouse in the box, be provided with the U type board in the vertical distribution warehouse, the left side board of U type board is provided with a plurality of binding wire frame, is provided with device fixed hole and wiring hole in the centre, device fixed hole is used for setting current transformer, is provided with incoming terminal on wiring hole, the middle board of U type board is provided with alternating current circuit breaker, the right side board of U type board is provided with first guide rail type electrical device mounting bracket and second guide rail type electrical device mounting bracket, is provided with fuse, miniature circuit breaker and lightning arrester on first guide rail type electrical device mounting bracket, is provided with electric energy meter on second guide rail type electrical device mounting bracket. The utility model has high space utilization, and has improved the safety of operation and the reliability of assembly.

Description

Technical Field

[0001] This utility model belongs to the field of charging and energy storage technology, specifically relating to a modular and detachable high-density energy storage device. Background Technology

[0002] With the continuous development of new energy technologies, various energy storage-related technologies have been widely applied, resulting in a wide variety of energy storage devices. Existing integrated energy storage units are mostly horizontal in structure, which occupy a large area, with scattered electrical components and a lot of empty space inside the cabinet. In contrast, in vertical integrated energy storage units, the distribution of equipment inside the cabinet is limited by large-volume materials such as PACK packages, high-voltage boxes, PCS, and refrigeration units. For the power distribution compartment, the available space is relatively cramped, making installation and maintenance difficult. Furthermore, the detours in wiring connections increase costs, and it is difficult to overcome the difficulties in maintenance caused by the vertical spatial distribution of the power distribution compartment. The solution is often to increase the space of the power distribution compartment, which in turn forces an increase in the footprint of the integrated energy storage unit. Utility Model Content

[0003] This utility model overcomes the shortcomings of the existing technology and aims to solve the following technical problem: providing a modular and detachable high-density energy storage device. By rationalizing the structural design of the energy storage device, the footprint of the energy storage device is reduced, its space utilization is improved, wiring length is saved, and the operational safety and assembly reliability are enhanced.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a modular and detachable high-density energy storage device, including a box, which contains a power distribution compartment, a high-voltage box, a PCS compartment, and a battery compartment. A U-shaped plate is vertically arranged in the power distribution compartment. The left side plate of the U-shaped plate has multiple wire binding brackets around its perimeter and a device fixing hole and a wiring hole in its center. The device fixing hole is used to install a current transformer, and the wiring hole has an inlet terminal. An AC circuit breaker is installed in the middle plate of the U-shaped plate. A first rail-mounted electrical component mounting bracket and a second rail-mounted electrical component mounting bracket are installed on the right side plate of the U-shaped plate. A fuse, a miniature circuit breaker, and a surge arrester are installed on the first rail-mounted electrical component mounting bracket. An energy meter is installed on the second rail-mounted electrical component mounting bracket.

[0005] The battery compartment is located above the enclosure, while the high-voltage box, PCS compartment, and power distribution compartment are located below the battery compartment, with the power distribution compartment situated to the left of the high-voltage box and PCS compartment.

[0006] The modular, detachable, high-density energy storage device further includes a refrigeration chamber, which is located at the bottom of the housing and is used to house the refrigeration unit.

[0007] The first rail-mounted electrical component mounting bracket is located below the second rail-mounted electrical component mounting bracket.

[0008] The middle plate of the U-shaped plate is also provided with a wire hole.

[0009] The creepage distance of the incoming terminal is ≥20mm. The power grid cable enters the power distribution compartment through the bottom of the power distribution compartment and connects to the incoming terminal. The cable connected to the output end of the AC circuit breaker enters the PCS compartment through the cable hole.

[0010] The left and right sides of the U-shaped plate have an L-shaped structure. Multiple mounting holes are provided on the side of the left and right sides closest to the middle plate. The left and right sides are connected to the middle plate through the mounting holes and screws to form a U-shape.

[0011] The incoming terminal is connected to a current transformer, an AC circuit breaker, and a miniature circuit breaker; the miniature circuit breaker is connected to a surge arrester; and the current transformer is connected to an energy meter.

[0012] Compared with existing technologies, this utility model has the following advantages: It provides a modular, detachable, high-density energy storage device. By optimizing the structure of the vertically modular energy storage device and installing power distribution components using a three-sided bending structure within the distribution compartment, it not only improves space utilization but also provides sufficient and safe operating space for manual operation of circuit breakers. This allows workers to easily assemble and maintain components outside the integrated energy storage unit, improving operational safety and assembly reliability. Furthermore, the rational structural design allows cables within the energy storage device to be neatly arranged along their paths, saving space, facilitating maintenance, and simultaneously ensuring safety and controlling product costs, thus achieving product standardization. Attached Figure Description

[0013] Figure 1 A schematic diagram of the rear structure of a modular, detachable, high-density energy storage device provided for an embodiment of this utility model;

[0014] Figure 2 This is the main electrical wiring diagram of a modular, detachable, high-density energy storage device provided in this embodiment of the present invention;

[0015] Figure 3 This is a schematic diagram of the circuit connections of the main circuit components in the power distribution compartment in this embodiment of the utility model;

[0016] Figure 4 This is a schematic diagram of the U-shaped plate in an embodiment of the present utility model;

[0017] Figure 5 This is a schematic diagram of a partial installation structure of the U-shaped plate in an embodiment of this utility model;

[0018] Figure 6This is a schematic diagram of another partial installation structure of the U-shaped plate in an embodiment of this utility model;

[0019] In the diagram, 1-box, 2-distribution compartment, 3-high voltage box, 4-battery compartment, 5-U-shaped plate, 6-wire binding frame, 7-device fixing hole, 8-wiring hole, 9-current transformer, 10-inlet terminal, 11-AC circuit breaker, 12-wiring hole, 13-first guide rail type electrical component mounting bracket, 14-second guide rail type electrical component mounting bracket, 15-fuse, 16-miniature circuit breaker, 17-surge arrester, 18-electricity meter, 19-PCS compartment, 20-refrigeration compartment, 21-mounting hole. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1-6 As shown, this embodiment of the invention provides a modular, detachable, high-density energy storage device, including a housing 1. The housing 1 has a door on its back and contains a power distribution compartment 2, a high-voltage box 3, a PCS compartment 19, and a battery compartment 4. A U-shaped plate 5 is vertically arranged inside the power distribution compartment 2. The left side of the U-shaped plate 5 has multiple wire binding brackets 6 around its perimeter and a device fixing hole 7 and a wiring hole 8 in its center. The device fixing hole 7 is used to install a current transformer 9, and the wiring hole 8 has an inlet terminal 10. An AC circuit breaker 11 is installed on the middle plate of the U-shaped plate 5. A first rail-mounted electrical component mounting bracket 13 and a second rail-mounted electrical component mounting bracket 14 are installed on the right side plate of the U-shaped plate 5. A fuse 15, a miniature circuit breaker 16, and a surge arrester 17 are installed on the first rail-mounted electrical component mounting bracket 13. An energy meter 18 is installed on the second rail-mounted electrical component mounting bracket 14.

[0022] Specifically, such as Figure 1 As shown, in this embodiment, the battery compartment 4 is located above the housing 1, and the high voltage box 3, PCS compartment 19 and power distribution compartment 2 are located below the battery compartment 4. The power distribution compartment 2 is located to the left of the high voltage box 3 and PCS compartment 19, and the high voltage box 3 is located above the PCS compartment. The two have the same cross-section.

[0023] Furthermore, such as Figure 1 As shown, a modular and detachable high-density energy storage device in this embodiment also includes a refrigeration chamber 20, which is located at the bottom of the housing 1 and is used to house the refrigeration unit.

[0024] Furthermore, such as Figure 6 As shown, the first rail-mounted electrical component mounting bracket 13 is positioned below the second rail-mounted electrical component mounting bracket 14. The fuse 15, miniature circuit breaker 16, and surge arrester 17 are located above the electricity meter 18.

[0025] Furthermore, such as Figures 4-5 As shown, the middle plate of the U-shaped plate 5 is also provided with a wire-passing hole 12. The wire-passing hole 12 allows the lead wires inside the power distribution compartment to be led out and connected to the external module in front of the energy storage device.

[0026] Specifically, the creepage distance of the incoming terminal 10 is ≥20mm. The power grid cable enters the distribution compartment 2 through the bottom and connects to the incoming terminal 10. The cable connected to the output end of the AC circuit breaker 11 enters the PCS compartment 19 through the through hole 12. The component layout of the distribution compartment in this embodiment can ensure that the bending radius of the wire harness is ≥8D, improving the reliability of the wiring.

[0027] Furthermore, in this embodiment, the U-shaped panel of the power distribution compartment is a three-sided bent sheet metal design. For example... Figures 4-6 As shown, the left and right sides of the U-shaped plate 5 have an L-shaped structure, and multiple mounting holes 21 are provided on the side of the left and right sides closest to the middle plate. The left and right sides are connected to the middle plate through the mounting holes 21 and screws to form a U-shape. In addition, fixing holes are provided on the left and right sides, and the U-shaped plate is mounted on the crossbeams on both sides of the power distribution compartment through the fixing holes.

[0028] The installation steps for the power distribution compartment are as follows: 1. Lay the left side panel, right side panel, and middle panel flat, and install the guide rails and electrical components one by one; 2. Fix the left side panel with screws, while the right side panel and middle panel are U-shaped panels; 3. Then install the wiring harness according to the drawings, and complete the overall installation of the power distribution compartment outside the cabinet; 4. Push the U-shaped panel into the reserved space inside the power distribution compartment, and connect the remaining wiring harnesses to realize the modular installation and maintenance of the power distribution compartment.

[0029] Specifically, in this embodiment, as Figure 3As shown, in this embodiment, the incoming terminal 10 is connected to the current transformer 9, the AC circuit breaker 11 (QF1), and the miniature circuit breaker 16 (QF2). The miniature circuit breaker 16 is connected to the surge arrester 17; the current transformer 9 is connected to the energy meter 18. The AC circuit breaker 11 has a breaking capacity of 38kA and can quickly cut off the power supply in case of overload, short circuit, or other abnormal conditions, effectively preventing electrical fires and equipment damage, and ensuring the stable operation of the entire system. The fuse RD, as a secondary protection layer, provides fine circuit protection for the equipment inside the cabinet. It can automatically trip when a small current fault is detected, protecting downstream circuits and equipment from overload and short circuit damage, enhancing the reliability and safety of the system. Furthermore, the surge arrester FV can withstand the impact of lightning overvoltage, providing a solid lightning protection barrier for the energy storage unit and reducing the risk of equipment damage caused by lightning strikes. Its pre-emerging miniature circuit breaker 16 (QF2) provides circuit protection for the surge arrester. Three current transformers (TAa, TAb, and Tac) serve as measurement and monitoring elements, proportionally converting the high primary current to the low secondary current and outputting a standardized current signal. This signal matches the meter's input range, achieving high- and low-voltage electrical isolation and preventing direct contact between the meter and the high-voltage circuit. This facilitates real-time monitoring of the current status, timely detection and handling of potential power problems, and provides data support for the intelligent management of energy storage systems. The energy meter WH, based on the signal provided by the current transformer (CT), integrates parameters such as current, voltage, and power factor. It supports Modbus RTU protocol communication for remote meter reading. By analyzing the current waveform input from the CT, it detects harmonic distortion or phase loss faults, triggering alarm signals.

[0030] Furthermore, such as Figure 2 As shown, in this embodiment, the power grid enters the distribution compartment through the incoming terminal, then exits through the distribution compartment, passes through the PCS compartment to the high-voltage box, and the output from the high-voltage box connects to the five PACK battery packs in the battery compartment, forming an integrated energy storage system. The PCS compartment is used to house the AC / DC conversion module, and the high-voltage box houses the protection module. Therefore, in this embodiment, the cable enters the distribution compartment 2 from the left, then enters the high-voltage box 3 through the bottom right side of the distribution compartment 2, and exits from the high-voltage box 3 into the upper battery compartment 4, resulting in a reasonable and simple wiring layout.

[0031] This utility model has the following advantages:

[0032] 1. The power distribution compartment features an open composite sheet metal structure: employing an asymmetrical three-sided bending design and secured with screws, ensuring both convenient panel installation and stable stacking structure. Compared to traditional enclosed enclosures, it improves heat dissipation efficiency and creates an effective installation space of 427×350×404mm (tolerance ±0.5mm), 2.3 times larger than planar components, thus avoiding space waste.

[0033] 2. Quick-release maintenance system: Enables rapid assembly and disassembly of electrical components while maintaining functional integrity. Side sheet metal parts are secured with screws for easy disassembly, avoiding difficulties in assembly and maintenance in confined or poorly lit spaces. Simultaneously, the three-sided open space design provides sufficient and safe operating space for manual operation of the circuit breaker. This allows personnel to easily assemble and maintain components outside the energy storage unit, improving operational safety and assembly reliability.

[0034] 3. High-density integrated power distribution module: Within a 0.06m³ space, it integrates: a double-layer guide rail system (spacing 52±0.2mm), 12 electrical components (including 1 x 250A circuit breaker, 3 x CTs, etc.), and a pre-wiring system (cable tray curvature radius ≥8D). Compared to traditional layouts, the wiring harness length is reduced by 1.1m per unit. The design further reduces the space occupied by individual components, achieving a high degree of integration and maximizing space utilization of the power distribution system.

[0035] 4. Three-dimensional wiring harness layout: Twelve cable tie brackets (100±5mm intervals) are installed inside the energy storage unit, along with concealed cable trays and through holes, ensuring that all cables are neatly arranged according to the designed path. This saves space, facilitates maintenance, and balances safety and cost control, achieving product standardization and uniformity.

[0036] In summary, this utility model provides a modular and detachable high-density energy storage device. Through modular vertical spatial arrangement, it significantly reduces the footprint of the energy storage device, optimizes wiring management, and maintains high safety. Furthermore, the use of U-shaped panels for the arrangement and installation of circuit components within the confined space of the power distribution compartment increases the space utilization rate of the compartment, while enabling modular and detachable maintenance, facilitating installation and repair; all within a footprint of only 1.38m². 2 For example, under the condition that the space allocation of large-volume modules (i.e., battery packs, high-voltage boxes, PCS, fire protection, refrigeration units, etc.) has been completed, the electrical components in the power distribution compartment can be laid out in the remaining three-dimensional space of 427×350×404mm, so that the installation and maintenance of the power distribution compartment can be realized with only 0.8m³ space.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A modular, detachable, high-density energy storage device, characterized in that, The enclosure includes a housing (1), which contains a power distribution compartment (2), a high-voltage box (3), a PCS compartment (19), and a battery compartment (4). A U-shaped plate (5) is vertically arranged inside the power distribution compartment (2). Multiple wire binding brackets (6) are arranged around the left side of the U-shaped plate (5), and a device fixing hole (7) and a wiring hole (8) are arranged in the center. The device fixing hole (7) is used to install a current transformer (9), and an incoming terminal (10) is arranged on the wiring hole (8). An AC circuit breaker (11) is arranged on the middle plate of the U-shaped plate (5). A first guide rail type electrical component mounting bracket (13) and a second guide rail type electrical component mounting bracket (14) are arranged on the right side plate of the U-shaped plate (5). A fuse (15), a miniature circuit breaker (16), and a surge arrester (17) are arranged on the first guide rail type electrical component mounting bracket (13). An electricity meter (18) is arranged on the second guide rail type electrical component mounting bracket (14).

2. The modular, detachable, high-density energy storage device according to claim 1, characterized in that, The battery compartment (4) is located above the box body (1), and the high voltage box (3), PCS compartment (19) and power distribution compartment (2) are located below the battery compartment (4), with the power distribution compartment (2) located to the left of the high voltage box (3) and PCS compartment (19).

3. The modular, detachable, high-density energy storage device according to claim 1, characterized in that, It also includes a refrigeration chamber (20), which is located at the bottom of the box (1) and is used to house the refrigeration unit.

4. A modular, detachable, high-density energy storage device according to claim 1, characterized in that, The first rail-mounted electrical component mounting bracket (13) is located below the second rail-mounted electrical component mounting bracket (14).

5. A modular, detachable, high-density energy storage device according to claim 1, characterized in that, The middle plate of the U-shaped plate (5) is also provided with a wire hole (12).

6. A modular, detachable, high-density energy storage device according to claim 5, characterized in that, The creepage distance of the incoming terminal (10) is ≥20mm. The power grid cable enters the power distribution compartment (2) through the bottom and connects to the incoming terminal (10). The cable connected to the output end of the AC circuit breaker (11) enters the PCS compartment (19) through the wire hole (12).

7. A modular, detachable, high-density energy storage device according to claim 1, characterized in that, The left and right sides of the U-shaped plate (5) are L-shaped structures. Multiple mounting holes (21) are provided on the side of the left and right sides closest to the middle plate. The left and right sides are connected to the middle plate through the mounting holes (21) and screws to form a U-shape.

8. A modular, detachable, high-density energy storage device according to claim 1, characterized in that, The incoming terminal (10) is connected to the current transformer (9), the AC circuit breaker (11) and the miniature circuit breaker (16), the miniature circuit breaker (16) is connected to the surge arrester (17); the current transformer (9) is connected to the power meter (18).

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