Dehumidification system of energy storage cabinet, energy storage cabinet and power station

Abstract

The utility model relates to energy storage equipment technical field and provide a kind of dehumidification system of energy storage cabinet, energy storage cabinet and power station.The dehumidification system of energy storage cabinet of the utility model, including dehumidification module, photovoltaic power generation module and independent power supply module respectively connected with dehumidification module.Both photovoltaic power generation module and independent power supply module, and dehumidification module and independent power supply module are connected through variable voltage module, and photovoltaic power generation module can charge independent power supply module through variable voltage module.The dehumidification system of energy storage cabinet described in the utility model, by setting dehumidification module, photovoltaic power generation module and independent power supply module, the utilization and storage of the electric energy generated by photovoltaic power generation module can be realized, the consumption of dehumidification module to battery cluster energy can be reduced, thereby conducive to energy saving.

Description

Technical Field

[0001] This utility model relates to the field of energy storage equipment technology, and in particular to a dehumidification system for an energy storage cabinet. Furthermore, this utility model also relates to an energy storage cabinet employing this dehumidification system, and a power station equipped with the energy storage cabinet. Background Technology

[0002] Energy storage power stations are crucial facilities built to regulate peak-valley differences in the power system. During off-peak hours, these stations store excess electricity from the grid, preventing waste due to underutilization. Then, during peak hours, the stored energy is released back into the grid, effectively alleviating power supply pressure and optimizing the allocation of power resources. Currently, energy storage power stations are primarily ultra-large battery pack systems, typically housing numerous batteries within storage cabinets and utilizing the charging and discharging characteristics of these batteries to store and release electrical energy.

[0003] Existing energy storage cabinets based on cell-to-system solutions have high requirements for preventing condensation because they abandon the conventional sealed battery pack design. They need to monitor and control the air humidity inside the cabinet in real time. However, in existing technologies, dehumidification modules often require battery clusters to supply power, resulting in high energy consumption of the dehumidification modules, which is not conducive to energy saving. Utility Model Content

[0004] In view of this, the present invention aims to propose a dehumidification system for an energy storage cabinet to reduce the energy consumption of the battery cluster by the dehumidification module, thereby facilitating energy conservation.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A dehumidification system includes a dehumidification module, a photovoltaic power generation module and an independent power supply module respectively connected to the dehumidification module;

[0007] The photovoltaic power generation module and the independent power supply module, as well as the dehumidification module and the independent power supply module, are all connected through a transformer module, and the photovoltaic power generation module can charge the independent power supply module through the transformer module.

[0008] Furthermore, it also includes a battery cluster, which is connected to the independent power supply module via a bidirectional inverter module.

[0009] Furthermore, the bidirectional inverter module and the dehumidification module, as well as the bidirectional inverter module and the photovoltaic power generation module, are all connected through the transformer module.

[0010] Furthermore, the battery cluster has multiple individual battery cells and relays corresponding to each individual battery cell, and each individual battery cell is connected to the bidirectional inverter module through its corresponding relay; it also includes a battery management module connected to each individual battery cell, each relay and the independent power supply module, the battery management module being used to detect the energy storage of each individual battery cell and the independent power supply module, and to control the opening and closing of each relay.

[0011] Furthermore, the bidirectional inverter module adopts a DC / DC bidirectional inverter.

[0012] Furthermore, the transformer module employs a DC / DC transformer.

[0013] Furthermore, the independent power supply module uses a single battery cell.

[0014] Compared with the prior art, this utility model has the following advantages:

[0015] The dehumidification system of this utility model's energy storage cabinet is equipped with a photovoltaic power generation module and an independent power supply module, which are respectively connected to the dehumidification module. The photovoltaic power generation module and the independent power supply module, as well as the dehumidification module and the independent power supply module, are all connected through a transformer module. The photovoltaic power generation module can charge the independent power supply module through the transformer module, which enables the utilization and storage of the electrical energy generated by the photovoltaic power generation module. This forms a dual power supply mode for the dehumidification module, thereby reducing the energy consumption of the dehumidification module on the battery cluster and thus promoting energy conservation.

[0016] Furthermore, by setting up battery clusters and connecting them to the independent power supply module via a bidirectional inverter, the battery clusters can charge the independent power supply module, thereby enhancing the power supply reliability of the independent power supply module. Connecting the bidirectional inverter module and the dehumidification module, as well as the bidirectional inverter module and the photovoltaic power generation module, via transformer modules enables the battery clusters to supply power to the dehumidification module, and the photovoltaic power generation module to supplement the battery clusters. This improves the reliability of the power supply to the dehumidification module, preventing it from failing due to severe weather and causing condensation inside the cabinet. It also reduces the energy consumption of the dehumidification module on the battery clusters, thus contributing to energy conservation.

[0017] Secondly, by setting up multiple individual cells within the battery cluster and introducing a battery management module connected to each individual cell, each relay, and an independent power supply module, and by connecting each individual cell to its corresponding relay and bidirectional inverter module, it is possible to achieve bidirectional charging and discharging of each individual cell, parallel discharge of the independent power supply module and the lowest voltage cell in the battery cluster, and balancing the voltage difference between individual cells. This helps to maximize the charging and discharging performance of the battery cluster, extend system life, and increase user benefits.

[0018] Furthermore, the bidirectional inverter module employs a DC / DC bidirectional inverter, enabling bidirectional flow of electrical energy and thus flexible energy management, thereby improving energy utilization efficiency. The transformer module uses a DC / DC transformer, which simplifies the system structure, reduces equipment costs, and improves the overall energy efficiency of the dehumidification system, contributing to energy conservation. The independent power supply module uses a single battery cell, resulting in a simple structure, ease of safety design and control, and avoids inconsistency issues caused by multiple battery cells, thereby improving the stability of the independent power supply module during use.

[0019] Another objective of this invention is to provide an energy storage cabinet, wherein the energy storage cabinet is equipped with the dehumidification system described above.

[0020] Furthermore, it also includes a cabinet; the photovoltaic panel in the photovoltaic power generation module is located on the top of the cabinet, and the independent power supply unit and the dehumidification module are both located inside the cabinet.

[0021] The energy storage cabinet described in this utility model, by setting the above-mentioned dehumidification system, can reduce the energy consumption of the battery cluster, thereby facilitating energy conservation and reducing long-term operating costs.

[0022] Furthermore, it also includes the cabinet, the photovoltaic panels on top of the cabinet, the independent power supply unit and dehumidification module inside the cabinet. The above configuration makes the layout of the energy storage cabinet reasonable, which is conducive to the modular design of the energy storage cabinet, thereby facilitating the production and manufacturing of the energy storage cabinet and its after-sales maintenance.

[0023] Another objective of this invention is to provide a power station comprising the aforementioned energy storage cabinet. The power station and the aforementioned energy storage cabinet offer the same advantages over the prior art, and will not be elaborated upon further here. Attached Figure Description

[0024] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0025] Figure 1 This is a schematic diagram showing the connection relationship of the dehumidification system of the energy storage cabinet described in this embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the battery management module described in an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the overall structure of the energy storage cabinet described in an embodiment of the present utility model;

[0028] Figure 4 This is a schematic diagram of the rear structure of the energy storage cabinet according to an embodiment of the present utility model;

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Dehumidification module;

[0031] 2. Photovoltaic power generation module; 21. Photovoltaic panel;

[0032] 3. Independent power supply module; 31. Single battery cell;

[0033] 4. Transformer module; 41. DC / DC transformer;

[0034] 5. Battery cluster; 51. Individual battery cell; 52. Relay;

[0035] 6. Bidirectional inverter module; 61. DC / DC bidirectional inverter;

[0036] 7. Battery management module; 71. Individual cell voltage detection module; 72. Relay control module;

[0037] 8. Cabinet; 9. High-voltage distribution box. Detailed Implementation

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0039] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0040] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0042] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] Example 1

[0044] This embodiment relates to a dehumidification system for an energy storage cabinet, which can reduce the energy consumption of the battery cluster by the dehumidification system of the energy storage cabinet, thereby facilitating energy conservation.

[0045] In terms of overall structure, such as Figure 1 As shown, this embodiment relates to a dehumidification system for an energy storage cabinet, including a dehumidification module 1, a photovoltaic power generation module 2 and an independent power supply module 3 respectively connected to the dehumidification module 1, the photovoltaic power generation module 2 and the independent power supply module 3, as well as the dehumidification module 1 and the independent power supply module 3, are all connected through a transformer module 4, and the photovoltaic power generation module 2 can charge the independent power supply module 3 through the transformer module 4.

[0046] The advantage of this setup is that it enables the utilization and storage of electrical energy generated by the photovoltaic power generation module 2, forming a dual power supply mode for the dehumidification module 1, thereby reducing the energy consumption of the dehumidification module 1 by the battery cluster and thus facilitating energy conservation.

[0047] Furthermore, in detail, in specific implementation, the dehumidification module 1 of this embodiment can be selected from micro compressor dehumidifiers or semiconductor dehumidifiers well known to those skilled in the art. These dehumidifiers typically include a humidity detection module, capable of automatically detecting the humidity in the energy storage cabinet and automatically activating the dehumidification function, without requiring additional detection or control modules. Additionally, it is worth mentioning that the photovoltaic power generation module 2 can preferably employ a photovoltaic power generation device well known to those skilled in the art, such as one that includes components like a combiner box, transformer, and photovoltaic panels 21. Therefore, the photovoltaic power generation module 2 can be directly connected to the dehumidification module 1 and supply power to it, without needing to add additional transformers or other modules in the connection between the photovoltaic power generation module 2 and the dehumidification module 1.

[0048] See also Figure 1In this embodiment, as a preferred implementation, it also includes a battery cluster 5, which is connected to the independent power supply module 3 via a bidirectional inverter module 6. This allows the battery cluster 5 to charge the independent power supply module 3, enabling a dual power supply mode for the independent power supply module 3 and thus enhancing the power supply reliability of the independent power supply module 3.

[0049] Similarly, such as Figure 1 As shown, in this embodiment, as a preferred implementation, the bidirectional inverter module 6 and the dehumidification module 1, as well as the bidirectional inverter module 6 and the photovoltaic power generation module 2, are connected via a transformer module 4. This configuration enables the battery cluster 5 to supply power to the dehumidification module 1, and the photovoltaic power generation module 2 to replenish the energy of the battery cluster 5. This improves the reliability of the dehumidification module 1's power supply, preventing condensation inside the cabinet due to failure caused by severe weather. Furthermore, it reduces the energy consumption of the battery cluster by the dehumidification module 1, thus promoting energy conservation.

[0050] In this embodiment, as a preferred implementation, such as Figures 1 to 4 As shown, the battery cluster 5 has multiple individual battery cells 51 and relays 52 corresponding to each individual battery cell 51. Each individual battery cell 51 is connected to a bidirectional inverter module 6 through its corresponding relay 52. ​​Meanwhile, the dehumidification system of the energy storage cabinet in this embodiment also includes a battery management module 7 connected to each individual battery cell 51, each relay 52, and the independent power supply module 3. The battery management module 7 is used to detect the energy storage of each individual battery cell 51 and the independent power supply module 3, and to control the opening and closing of each relay 52.

[0051] The advantage of this setup is that it enables bidirectional charging and discharging of each individual cell 51, parallel discharge of the lowest voltage cells in the independent power supply module 3 and battery cluster 5, and balances the voltage difference between each individual cell 51. This helps to maximize the charging and discharging performance of the battery cluster 5, extend system life, and increase user benefits.

[0052] Furthermore, in specific implementation, to be detailed, such as Figure 2 As shown, the battery management module 7 includes a single cell voltage detection module 71 for detecting the voltage of a single cell 51, and a relay control module 72 for controlling the opening and closing of the relay 52. ​​In addition, any parts not mentioned in the battery management module 7 can be referred to in the existing battery management module 7, and will not be described in detail here.

[0053] In this embodiment, as a preferred implementation, the bidirectional inverter module 6 adopts a DC / DC bidirectional inverter 61 to enable bidirectional flow of electrical energy, thereby achieving flexible management of electrical energy and improving energy utilization efficiency.

[0054] In this embodiment, as a preferred implementation, the transformer module 4 adopts a DC / DC transformer 41. This simplifies the system structure, reduces equipment costs, and improves the energy efficiency of the entire dehumidification system, thus promoting energy conservation.

[0055] In this embodiment, as a preferred implementation, the independent power supply module 3 uses a single battery cell 31. This simplifies the structure of the independent power supply module 3, facilitates safe design and control, and avoids inconsistency issues caused by multiple battery cells, thereby improving the stability of the independent power supply module 3 during use. Furthermore, it should be noted that the single battery cell 31 in this embodiment is preferably the same as the individual battery cell 51 in the battery cluster 5.

[0056] In this embodiment, the dehumidification system of the energy storage cabinet operates as follows: when the dehumidification module 1 needs to operate and the photovoltaic power generation module 2 is in operation, the power output of the photovoltaic power generation module 2 will directly drive the dehumidifier to work. When the dehumidification module 1 does not need to operate, or when the dehumidification module 1 needs to operate but the output power of the photovoltaic power generation module 2 is sufficient, the excess electrical energy will be stored in the independent power supply module 3 through the DC / DC transformer module 4 to reduce waste.

[0057] When dehumidification module 1 needs to operate, but photovoltaic power generation module 2 cannot meet its operational needs due to severe weather conditions, independent power supply module 3 will drive dehumidification module 1 to operate through DC / DC transformer module 4. When independent power supply module 3 also cannot meet the operational needs of dehumidification module 1, battery management module 7 will select the highest voltage cell in battery cluster 5 to supply power to dehumidification module 1 in real time, ensuring its normal operation and preventing condensation in the energy storage cabinet.

[0058] In addition, the independent power supply module 3 and the photovoltaic module can also cooperate with the battery management module 7. The battery management module 7 monitors the energy storage of each individual cell 51 in the battery cluster 5 and the independent power supply module 3 in real time, and controls the opening and closing of each relay 52. ​​It selects the cell with the highest voltage in real time to replenish the independent power supply module 3 / the weakest individual cell 51, which can balance the voltage difference of each individual cell 51 in the battery cluster 5, so that the charging and discharging performance of the energy storage cabinet system can be optimized, which can extend the system life and increase user benefits.

[0059] In this embodiment, combined with Figure 1As shown, the individual cells 51 in the battery cluster 5 include B1, B2, B3 to Bn, and each relay 52 includes K1, K2, K3 to Kn, where n is a positive integer. K1 is used to control the connection between B1 and the DC / DC bidirectional inverter 61, K2 is used to control the connection between B2 and the DC / DC bidirectional inverter 61, and so on. Kn is used to control the connection between Bn and the DC / DC bidirectional inverter 61. In specific implementation, the battery management module 7 detects each individual cell 51 (B1-Bn) one by one through the individual cell voltage detection module 71. Assuming that B1 is the highest voltage cell and B3 is the lowest voltage cell in the individual cell 51, the relay control module 72 in the battery management module 7 will control relays K1 and K3 to combine, charging (recharging) B1 through B2 and reducing the voltage of B2, thereby facilitating the equalization design.

[0060] Specifically, when a single cell 31 needs to be recharged from the battery cluster, the BMS (Battery Management Module 7) detects and determines the relay (e.g., K3) corresponding to the cell with the highest voltage (e.g., B3) among the individual cells 51, and closes it. Then, the DC / DC bidirectional inverter 61 (e.g., capable of boosting to 3.65V) charges the single cell 31. At this time, the relay (e.g., K1) corresponding to the cell with the lowest voltage (e.g., B1) can also be opened, and the cell with the highest voltage (e.g., B3) simultaneously charges the cell with the lowest voltage (e.g., B1), accelerating the voltage drop speed of the cell with the highest voltage (e.g., B3).

[0061] When the voltage of the highest-voltage cell (e.g., B3) drops to the average voltage, the BMS will reselect the highest-voltage cell (e.g., K2) to charge either cell 31 or the lowest-voltage cell (e.g., B1). When the energy storage cabinet as a whole is discharging externally, cell 31 can be connected in parallel with the lowest-voltage cell (e.g., B1) via a DC / DC bidirectional inverter 61 to discharge externally, thereby reducing the workload of the weakest cell, increasing the system's discharge capacity, and extending its lifespan. Specifically, real-time selection of the highest-voltage cell (e.g., B3) to charge cell 31 or / and the lowest-voltage cell (e.g., B1) reduces the charge-discharge voltage difference, increases the available energy of the energy storage cabinet system, and increases revenue.

[0062] The dehumidification system of the energy storage cabinet in this embodiment, through the introduction of photovoltaic modules and independent power supply module 3, can reduce the energy consumption of the battery cluster by the dehumidification module 1, thereby facilitating energy saving, extending system life, and increasing user benefits.

[0063] Example 2

[0064] This embodiment relates to an energy storage cabinet, which is equipped with a dehumidification system as described in Embodiment 1.

[0065] In terms of specific structure, such as Figure 3 As shown, the energy storage cabinet in this embodiment also includes a cabinet body 8. The photovoltaic panel 21 of the photovoltaic power generation module 2 is located on the top of the cabinet body 8, and the independent power supply unit and the dehumidification module 1 are both located inside the cabinet body 8. The above arrangement makes the layout of the energy storage cabinet reasonable, which is conducive to realizing the modular design of the energy storage cabinet, thereby facilitating the production and manufacturing of the energy storage cabinet and its subsequent after-sales maintenance.

[0066] In addition, continue as Figure 3 As shown, in a specific implementation, the energy storage cabinet in this embodiment is also equipped with a high-voltage distribution box 9, which is well known to those skilled in the art, for connecting the battery cluster 5 with the battery cluster system. This will not be described in detail here.

[0067] This embodiment also relates to a power station, in which the above-mentioned energy storage cabinet is provided.

[0068] The energy storage cabinet and power station in this embodiment, by adopting the dehumidification system of the energy storage cabinet in Embodiment 1, can reduce the energy consumption of the battery cluster by the energy storage cabinet and power station, thereby facilitating energy conservation and reducing long-term operating costs.

[0069] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dehumidification system for an energy storage cabinet, characterized in that: It includes a dehumidification module, a photovoltaic power generation module and an independent power supply module respectively connected to the dehumidification module; The photovoltaic power generation module and the independent power supply module, as well as the dehumidification module and the independent power supply module, are all connected through a transformer module, and the photovoltaic power generation module can charge the independent power supply module through the transformer module.

2. The dehumidification system for the energy storage cabinet according to claim 1, characterized in that: It also includes a battery cluster, which is connected to the independent power supply module via a bidirectional inverter module.

3. The dehumidification system for the energy storage cabinet according to claim 2, characterized in that: The bidirectional inverter module and the dehumidification module, as well as the bidirectional inverter module and the photovoltaic power generation module, are all connected through the transformer module.

4. The dehumidification system for the energy storage cabinet according to claim 3, characterized in that: The battery cluster has multiple individual battery cells and a relay corresponding to each individual battery cell, and each individual battery cell is connected to the bidirectional inverter module through the corresponding relay. It also includes a battery management module connected to each of the individual battery cells, each of the relays and the independent power supply module. The battery management module is used to detect the energy storage of each of the individual battery cells and the independent power supply module, and to control the opening and closing of each of the relays.

5. The dehumidification system for the energy storage cabinet according to claim 2, characterized in that: The bidirectional inverter module uses a DC / DC bidirectional inverter.

6. The dehumidification system for the energy storage cabinet according to claim 1, characterized in that: The transformer module uses a DC / DC transformer.

7. The dehumidification system for the energy storage cabinet according to any one of claims 1 to 6, characterized in that: The independent power supply module uses a single battery cell.

8. An energy storage cabinet, characterized in that: The dehumidification system includes the energy storage cabinet according to any one of claims 1 to 7.

9. The energy storage cabinet according to claim 8, characterized in that: It also includes the cabinet; In the photovoltaic power generation module, the photovoltaic panel is located on the top of the cabinet, and the independent power supply module and the dehumidification module are both located inside the cabinet.

10. A power station, characterized in that: The power station is equipped with the energy storage cabinet as described in claim 8 or 9.

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