An energy storage converter device and energy storage system

Abstract

The utility model relates to the technical field of energy storage equipment, concretely relates to an energy storage current conversion equipment and energy storage system. The setting form between two energy storage current conversion modules and liquid cooling plate can both simplify structure and pass through the heat exchange mode through the heat exchange mode, utilize the cooling liquid in liquid cooling plate to absorb the heat of two energy storage current conversion modules, and shift heat along with cold liquid flow to reach cooling effect. In addition, the setting mode of the first face of the heating device towards liquid cooling plate can make the cooling liquid in liquid cooling plate fully absorb the heat of heating device, and shift heat along with cooling liquid flow, make the heat exchange efficiency between liquid cooling plate and energy storage current conversion module maximization, thereby make energy storage current conversion equipment internal heat can be evenly distributed, and then pass through the liquid cooling structure of simplifying energy storage current conversion equipment to reduce cost, solved the technical problem that the liquid cooling scheme of prior art energy storage current converter leads to higher cost due to complex structure.

Description

Technical Field

[0001] This utility model relates to the field of energy storage equipment technology, specifically to an energy storage converter and an energy storage system. Background Technology

[0002] The power conversion system (PCS) is the core equipment of the energy storage system. It plays a key role in bidirectional conversion and control of electrical energy, connects the battery energy storage system with the power grid / load, and is the core execution unit for realizing the flexible operation of the energy storage system.

[0003] With the development of the energy storage industry, especially the explosive growth of industrial and commercial energy storage, customers are increasingly demanding higher power density per unit volume for various energy storage modules. Energy storage converters are gradually moving towards liquid cooling and high integration. However, traditional liquid cooling technology suffers from high costs due to its complex structure. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an energy storage converter and energy storage system, which solves the technical problem that the liquid cooling solution of the existing energy storage converter has a high cost due to its complex structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides an energy storage converter device, including two energy storage converter modules and a liquid cooling plate, wherein the liquid cooling plate is disposed between the two energy storage converter modules. A heating element is disposed on a first side of each energy storage converter module, the first side facing the liquid cooling plate, and the heating element at least partially abuts against the liquid cooling plate.

[0007] In one possible implementation, the energy storage converter module is provided with heat dissipation holes, which are located in areas of the energy storage converter module where no heat-generating device is installed.

[0008] In one possible implementation, there are N energy storage converter modules and N / 2 liquid cooling plates, where N is greater than or equal to 2 and N is an even number.

[0009] In one possible implementation, the energy storage converter further includes a housing, in which the two energy storage converter modules and the liquid cooling plate are disposed, and the housing is divided into a first cavity and a second cavity.

[0010] This utility model also provides an energy storage system, including the above-mentioned energy storage converter.

[0011] In one possible implementation, the energy storage system further includes a liquid-cooled air conditioner and liquid-cooled piping. The housing is provided with a liquid inlet connector and a liquid outlet connector. The liquid-cooled plate is connected to the liquid inlet connector and the liquid outlet connector through the liquid-cooled piping. The liquid-cooled air conditioner is connected to the liquid inlet connector and the liquid outlet connector respectively.

[0012] The beneficial effects of this invention are as follows: Compared with the prior art, this invention simplifies the structure by using the arrangement of two energy storage converter modules and a liquid cooling plate. It also achieves a cooling effect by utilizing the coolant in the liquid cooling plate to absorb the heat from the two energy storage converter modules and transferring the heat with the flow of the coolant. Furthermore, the arrangement of the first side containing the heating element facing the liquid cooling plate allows the coolant in the liquid cooling plate to fully absorb the heat from the heating element and transfer it with the flow of the coolant. This maximizes the heat exchange efficiency between the liquid cooling plate and the energy storage converter modules, resulting in a more uniform heat distribution within the energy storage converter. This simplifies the liquid cooling structure of the energy storage converter, reducing costs and solving the technical problem of high costs due to the complex structure of existing liquid cooling solutions for energy storage converters. Attached Figure Description

[0013] Figure 1 A schematic diagram of the structure of an energy storage converter provided by this utility model.

[0014] Figure 2 A schematic diagram of another energy storage converter provided by this utility model.

[0015] Figure 3 A cross-sectional structural diagram of an energy storage converter provided for utility model.

[0016] Attached image labels:

[0017] 1. Energy storage converter; 11. Energy storage converter module; 12. Heating element; 13. Liquid cooling plate; 14. Housing; 141. First cavity; 142. Second cavity. Detailed Implementation

[0018] To solve the above-mentioned technical problems, this utility model provides an energy storage converter and an energy storage system. The technical solution and embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0019] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can refer to fixed connection, detachable connection, or integral connection; for those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0022] like Figure 1 As shown, this utility model provides an energy storage converter device 1, including two energy storage converter modules 11 and a liquid cooling plate 13, with the liquid cooling plate 13 disposed between the two energy storage converter modules 11. A heating element 12 is disposed on the first side of the energy storage converter module 11, the first side facing the liquid cooling plate 13, and the heating element 12 at least partially abuts against the liquid cooling plate 13.

[0023] The arrangement of the two energy storage converter modules 11 and the liquid cooling plate 13 simplifies the structure and enables heat exchange. The coolant in the liquid cooling plate 13 absorbs the heat from the two energy storage converter modules 11 and transfers the heat with the flow of the coolant, achieving a cooling effect. Furthermore, the arrangement of the first side of the heating element 12 facing the liquid cooling plate 13 allows the coolant in the liquid cooling plate 13 to fully absorb the heat from the heating element 12 and transfer the heat with the flow of the coolant, maximizing the heat exchange efficiency between the liquid cooling plate 13 and the energy storage converter modules 11. This ensures uniform heat distribution within the energy storage converter device 1, thereby simplifying the liquid cooling structure of the energy storage converter device 1 and reducing costs. This solves the technical problem of high costs due to the complex structure of existing liquid cooling solutions for energy storage converters.

[0024] In practical production applications, the energy storage converter module 11 is usually a PCB board. In addition, the two energy storage converter modules 11 can be placed diagonally or in other ways, such as mirrored placement, to improve the utilization rate of the liquid cooling plate and reduce the cost of the energy storage converter equipment.

[0025] Furthermore, the energy storage converter module 11 is provided with heat dissipation holes (not shown in the figure), which are located in the area of ​​the energy storage converter module 11 where no heat-generating device 12 is provided.

[0026] The ventilation holes allow for airflow, enabling a uniform distribution of heat within the energy storage converter 1. Furthermore, this design achieves good heat dissipation through the airflow passing through the ventilation holes without affecting the arrangement of the heat-generating components in the energy storage converter module 11.

[0027] In one optional embodiment, the liquid cooling plate 13 can be made of copper, aluminum, or their alloys to improve thermal conductivity and corrosion resistance. Through heat exchange, the coolant in the liquid cooling plate 13 absorbs heat and transfers it with the flow of the coolant. The liquid cooling plate 13 can conduct heat from the heat source to the coolant; materials with high thermal conductivity increase the heat conduction rate and improve heat dissipation. The specific heat capacity of the liquid cooling plate 13 material also affects heat dissipation efficiency; materials with higher specific heat capacity can absorb more heat, helping to maintain stable heat dissipation performance.

[0028] Furthermore, such as Figure 3 As shown, the energy storage converter 1 also includes a housing 14, in which the energy storage converter module 11 and the liquid cooling plate 13 are both disposed, and the housing 14 is divided into a first cavity 141 and a second cavity 142.

[0029] Air flows through the internal components of the energy storage converter 1 located in the first cavity 141, and then returns to the second cavity 142 through the heat dissipation holes on the power board, thereby realizing the repeated circulation of air in the energy storage converter 1, so as to keep the temperature in the energy storage converter 1 consistent, and at the same time, it can accelerate the heat exchange between the energy storage converter 1 and the external environment.

[0030] In one optional embodiment, there are N energy storage converter modules 11 and N / 2 liquid cooling plates 13, where N is greater than or equal to 2 and N is an even number.

[0031] This utility model also provides an energy storage system, including the above-mentioned energy storage converter 1.

[0032] In one optional embodiment, the energy storage system further includes a liquid-cooled air conditioner (not shown in the figure) and liquid-cooled piping (not shown in the figure). The housing is provided with an inlet connector (not shown in the figure) and an outlet connector (not shown in the figure). The liquid-cooled plate is connected to the inlet connector and the outlet connector through the liquid-cooled piping. The liquid-cooled air conditioner is connected to the inlet connector and the outlet connector respectively.

[0033] like Figure 2 As shown, the coolant flows through the liquid-cooled pipes into the liquid-cooled plate heat exchange system, which consists of the energy storage converter module 11 and the liquid-cooled plate 13. Finally, it flows out through the outlet connector of the energy storage converter device 1 to the inlet of the liquid-cooled air conditioner. When the outside temperature is high, the liquid-cooled air conditioner operates in cooling mode. The cooled coolant flows into the energy storage converter device 1, passes through the liquid-cooled plate heat exchange system (comprising the energy storage converter module 11 and the liquid-cooled plate 13), and flows out through the outlet connector of the energy storage converter device 1 to the inlet of the liquid-cooled air conditioner after absorbing heat. It is then cooled again and output back to the energy storage converter device 1. This cycle repeats, allowing the coolant to carry away the heat emitted by the energy storage converter device 1, thus lowering its temperature. When the outside temperature is low, the liquid-cooled air conditioner operates in heating mode. The coolant flow path is the same as in the cooling mode, and will not be described again here.

[0034] In summary, the main innovation of this utility model lies in the adoption of shared technology and modular design of the liquid cooling plate 13, which significantly improves heat dissipation efficiency and reduces equipment costs. This utility model provides a high-efficiency, low-cost energy storage converter 1, suitable for various application scenarios and with broad application prospects.

[0035] The above description is merely a preferred embodiment of the present utility model, and the specific embodiments described above are not intended to limit the present utility model. Various modifications and variations can be made within the scope of the technical concept of the present utility model. All refinements, modifications, or equivalent substitutions made by those skilled in the art based on the above description are within the scope of protection of the present utility model.

Claims

1. An energy storage converter, characterized in that, It includes two energy storage converter modules and a liquid cooling plate, wherein the liquid cooling plate is disposed between the two energy storage converter modules; A heating element is provided on the first side of the energy storage converter module, the first side is facing the liquid cooling plate, and the heating element is at least partially in contact with the liquid cooling plate.

2. The energy storage converter according to claim 1, characterized in that, The energy storage converter module is provided with heat dissipation holes, which are located in areas of the energy storage converter module where no heat-generating device is installed.

3. The energy storage converter according to claim 1 or 2, characterized in that, The number of energy storage converter modules is N, and the number of liquid cooling plates is N / 2, where N is greater than or equal to 2 and N is an even number.

4. The energy storage converter according to claim 3, characterized in that, The energy storage converter also includes a housing, in which the two energy storage converter modules and the liquid cooling plate are disposed, and the housing is divided into a first cavity and a second cavity.

5. An energy storage system, characterized in that, Includes the energy storage converter as described in any one of claims 1 to 4.

6. The energy storage system according to claim 5, characterized in that, The energy storage system also includes a liquid-cooled air conditioner and liquid-cooled pipelines. The housing is provided with a liquid inlet connector and a liquid outlet connector. The liquid-cooled plate is connected to the liquid inlet connector and the liquid outlet connector through the liquid-cooled pipelines. The liquid-cooled air conditioner is connected to the liquid inlet connector and the liquid outlet connector respectively.

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