String type energy storage inverter integrated all-in-one machine

Abstract

The utility model provides a string type energy storage inverter integrated all-in-one machine, which relates to the technical field of energy storage systems, comprises a rack, and is characterized in that a top PCS module is fixedly arranged at the upper part of the inner side of the rack, and a side PCS module is fixedly arranged on one side of the inner part of the rack and is positioned below the top PCS module; a confluence cabinet is arranged on the other side of the interior of the rack and located below the top PCS module, and the confluence cabinet is an independent cabinet body and is detachably arranged with the rack. According to the utility model, through the design of improving the integration level, simplifying the maintenance, enhancing the flexibility, optimizing the heat dissipation wiring and the like, the comprehensive performance and the use experience of the string type energy storage inverter integrated all-in-one machine are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of energy storage system technology, specifically to an integrated string energy storage inverter. Background Technology

[0002] In existing large-scale energy storage systems, centralized PCS (Power Conversion System) solutions dominate. However, centralized PCS has several significant drawbacks, such as a high risk of single point of failure, which could lead to the failure of the entire energy storage system; significant energy loss during long-distance cable transmission, reducing the overall efficiency of the system; and poor system flexibility, making it difficult to meet diverse and complex energy storage needs.

[0003] To overcome the aforementioned drawbacks of centralized PCS, string PCS has gradually emerged in the market. String PCS, through distributed layout and modular design, reduces the risk of single points of failure, minimizes cable loss, and improves system flexibility. However, current string PCS still has some shortcomings. For example, some string PCS systems are expensive, increasing the overall investment in the energy storage system; at the same time, their complex design and large space occupation cause inconvenience for system installation and maintenance; furthermore, the maintenance operations of some string PCS are cumbersome, increasing operation and maintenance costs and time costs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an integrated string energy storage inverter, aiming to improve the integration of string PCS, increase space utilization, and reduce maintenance operations; at the same time, it needs to be compatible with multiple configurations to meet the configuration requirements of energy storage systems of different capacities.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A string energy storage inverter integrated unit includes a rack, characterized in that: a top PCS module is fixedly installed on the upper inner side of the rack, a side PCS module is fixedly installed on one inner side of the rack below the top PCS module, and a combiner cabinet is installed on the other inner side of the rack below the top PCS module, the combiner cabinet being an independent cabinet and detachably installed from the rack.

[0007] Preferably, a transverse ventilation channel is provided between the lower side of the top PCS module and the upper side of the side PCS module and the combiner cabinet, and a longitudinal ventilation channel is provided between the side PCS module and the combiner cabinet, with the top of the longitudinal ventilation channel communicating with the transverse ventilation channel.

[0008] Preferably, there are several top PCS modules, which are arranged vertically and horizontally relative to each other.

[0009] Preferably, there are several side PCS modules, which are arranged horizontally and vertically among each other.

[0010] Preferably, the top PCS module consists of 9 modules, the side PCS module consists of 3 modules, and both the top PCS module and the side PCS module are set to a group of 3 modules.

[0011] Preferably, the frame includes several crossbeams, longitudinal beams, and columns, which are welded and fixed to each other.

[0012] This utility model provides an integrated string energy storage inverter. It offers the following advantages:

[0013] Improved integration and space utilization: By cleverly designing the layout of the top and side PCS modules and adopting a detachable combiner cabinet, the overall structure of the integrated unit is compact, significantly improving the integration and space utilization of the energy storage system.

[0014] Simplified maintenance: The combiner cabinet adopts a modular design, which is processed and assembled independently of the rack. This allows for quick modification and replacement according to different configuration requirements, reducing the complexity and workload of overall machine maintenance and improving maintenance efficiency.

[0015] Enhanced flexibility: The integrated unit is designed to be compatible with multiple configurations. By adjusting the number of top and side PCS modules and replacing the combiner cabinets with different configurations, it can meet the different configuration requirements of energy storage systems with different capacities, thus enhancing the system's flexibility and adaptability.

[0016] Optimized heat dissipation and cabling: The horizontal and vertical ventilation channels set between the top PCS module and the side PCS module, as well as around the combiner cabinet, not only ensure effective heat dissipation of the equipment, but also provide convenient cabling space, making the operation of the whole machine more stable and reliable.

[0017] In summary, this utility model significantly improves the overall performance and user experience of the integrated string energy storage inverter by increasing integration, simplifying maintenance, enhancing flexibility, and optimizing heat dissipation wiring. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the planar structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the axonal structure of the present invention;

[0020] In the diagram: 1-Rack, 2-Top PCS module, 3-Side PCS module, 4-Combiner cabinet, 5-Horizontal ventilation channel, 6-Longitudinal ventilation channel, 101-Crossbeam, 102-Longitudinal beam, 103-Column. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] Please see Figure 1 and Figure 2 A string energy storage inverter integrated unit includes a frame 1. A top PCS module 2 is fixedly installed on the upper inner side of the frame 1. A side PCS module 3 is fixedly installed on one inner side of the frame 1 and below the top PCS module 2. A combiner cabinet 4 is installed on the other inner side of the frame 1 and below the top PCS module 2. The combiner cabinet 4 is an independent cabinet and is detachably installed from the frame 1.

[0024] A transverse ventilation channel 5 is provided between the lower side of the top PCS module 2 and the upper side of the side PCS module 3 and the junction box 4. A longitudinal ventilation channel 6 is provided between the side PCS module 3 and the junction box 4. The top of the longitudinal ventilation channel 6 is connected to the transverse ventilation channel 5.

[0025] The top PCS modules 2 are arranged vertically and horizontally relative to each other. The side PCS modules 3 are arranged horizontally and vertically relative to each other. There are 9 top PCS modules and 3 side PCS modules, and both are set up in groups of 3.

[0026] The frame 1 includes several crossbeams 101, longitudinal beams 102 and columns 103, which are welded and fixed to each other.

[0027] This embodiment is a 12-branch serial PCS integrated unit. The top PCS module 2 and the side PCS module 3 are used together to form a "7"-shaped layout. The horizontal ventilation channel 5 and the vertical ventilation channel 6 not only serve the purpose of ventilation and heat dissipation but also facilitate cable routing. This layout reduces the overall size of the integrated unit by the installation space of 3 PCS modules compared to similar solutions on the market. The combiner cabinet 4 is assembled in a modular manner, processed independently of the rack 1, and its components are installed separately. It can be quickly modified and replaced according to different configuration requirements, reducing the workload of overall unit maintenance.

[0028] Example 2

[0029] This embodiment is based on a variation of Embodiment 1. By changing the number of top PCS modules 2 or side PCS modules 3, a serial PCS integrated machine with 8 to 12 branches can be formed.

[0030] Example 3

[0031] This embodiment is based on the transformations of Embodiment 1 and Embodiment 2. By modifying and replacing the combiner cabinet 4, it can flexibly meet the adjustment of different configuration requirements.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A string energy storage inverter integrated unit, comprising a frame (1), characterized in that: A top PCS module (2) is fixedly installed on the upper inner side of the rack (1). A side PCS module (3) is fixedly installed on one side of the rack (1) and below the top PCS module (2). A junction box (4) is installed on the other side of the rack (1) and below the top PCS module (2). The junction box (4) is an independent cabinet and is detachable from the rack (1).

2. The integrated string energy storage inverter according to claim 1, characterized in that: A transverse ventilation channel (5) is provided between the lower side of the top PCS module (2) and the upper side of the side PCS module (3) and the junction box (4). A longitudinal ventilation channel (6) is provided between the side PCS module (3) and the junction box (4). The top of the longitudinal ventilation channel (6) is connected to the transverse ventilation channel (5).

3. The integrated string energy storage inverter according to claim 1, characterized in that: The top PCS module (2) has several units, which are arranged vertically and horizontally relative to each other.

4. The integrated string energy storage inverter according to claim 3, characterized in that: The side PCS module (3) has several components, which are arranged horizontally and vertically to each other.

5. The integrated string energy storage inverter according to claim 4, characterized in that: The top PCS module (2) consists of 9 modules, and the side PCS module (3) consists of 3 modules. Both the top PCS module (2) and the side PCS module (3) are set to a group of 3 modules.

6. A string energy storage inverter integrated unit according to any one of claims 1-5, characterized in that: The frame (1) includes several crossbeams (101), longitudinal beams (102) and columns (103), which are welded and fixed to each other.

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