Energy storage power module and energy storage inverter

Abstract

The utility model belongs to the energy storage technical field discloses a kind of energy storage power module and energy storage inverter, the energy storage power module includes: mounting bracket, liquid cooling plate is installed in mounting bracket middle, first IGBT module and second IGBT module are provided on liquid cooling plate, and first IGBT module and second IGBT module top are provided with input laminated busbar, middle connecting copper bar and alternating current output copper bar;The first end of first IGBT module is connected with input laminated busbar, the second end of first IGBT module is connected with the first end of middle connecting copper bar;The first end of second IGBT module is connected with the second end of middle connecting copper bar, and the second end of second IGBT module is connected with alternating current output copper bar;The top of second IGBT module is provided with drive control board, and drive control board is fixedly connected with liquid cooling plate by first support column.The utility model effectively improves the heat dissipation efficiency of energy storage module.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage technology and relates to an energy storage power module and an energy storage inverter. Background Technology

[0002] In recent years, global energy shortages and environmental pollution have become increasingly severe, drawing significant attention to distributed energy sources such as wind and solar power due to their clean energy characteristics. Against the backdrop of my country's sustained economic development, large-scale development of distributed energy has become a crucial strategy for alleviating the energy supply and demand imbalance. However, the intermittent and fluctuating nature of wind and solar power generation poses a severe challenge to grid stability when connected on a large scale. Therefore, current renewable energy power plants generally require the installation of energy storage systems of a certain capacity to mitigate power fluctuations, achieve peak-valley regulation, stabilize voltage, and improve power quality.

[0003] With the rapid development of the energy storage industry, energy storage inverters have gradually become key equipment, and their core component, the energy storage power module, occupies an extremely important position in the entire system. However, because energy storage power modules are usually exposed to harsh environments such as alternating high and low temperatures, high humidity, and dust for extended periods, their failure rate is relatively high, necessitating improvements in heat dissipation and protection performance. Currently, energy storage power modules generally use air cooling. However, during long-term operation, the fans used for air cooling require regular maintenance, and the air ducts and heat sink fins also need to be cleaned of foreign objects, increasing maintenance costs. In addition, energy storage power modules and their associated air ducts and air filters occupy a large amount of space, resulting in low heat dissipation efficiency.

[0004] Therefore, improving the heat dissipation efficiency of energy storage power modules is a technical problem that urgently needs to be solved. Utility Model Content

[0005] To address the technical problem of low heat dissipation efficiency in the aforementioned energy storage power modules, this utility model provides an energy storage power module and an energy storage inverter.

[0006] In a first aspect, this utility model provides an energy storage power module, comprising:

[0007] The mounting bracket has a liquid cooling plate installed in the middle, and a first IGBT module and a second IGBT module are arranged on the liquid cooling plate. An input stacked busbar, an intermediate connecting copper busbar and an AC output copper busbar are arranged above the first IGBT module and the second IGBT module.

[0008] The first end of the first IGBT module is connected to the input stacked busbar, and the second end of the first IGBT module is connected to the first end of the intermediate connecting copper busbar; the first end of the second IGBT module is connected to the second end of the intermediate connecting copper busbar, and the second end of the second IGBT module is connected to the AC output copper busbar.

[0009] A drive control board is provided above the second IGBT module, and the drive control board is fixedly connected to the liquid cooling plate through a first support column.

[0010] Furthermore, the mounting bracket includes a first mounting plate, a first side plate and a second side plate perpendicularly connected to the first mounting plate, and a handle disposed on the outside of the first mounting plate;

[0011] The first side plate and the second side plate are disposed opposite to each other, and the first side plate and the second side plate are respectively connected to both ends of the liquid cooling plate;

[0012] The mounting bracket further includes a first support bracket and a second support bracket, which are respectively connected to the first side plate and the second side plate.

[0013] Furthermore, an insulating beam is connected to the side of the liquid cooling plate near the input stacked busbar, the input stacked busbar is installed on the top of the insulating beam, and the insulating beam is an integrally formed L-shaped insulating profile.

[0014] The L-shaped insulating profile includes a horizontal panel and a vertical panel that is perpendicularly connected to the horizontal panel. The two ends of the horizontal panel are respectively connected to the first support bracket and the second support bracket. The vertical panel is connected to the side of the liquid cooling plate near the input stacked busbar.

[0015] Furthermore, an absorption capacitor is provided on the input stack busbar, and the absorption capacitor is connected to the first end of the first IGBT module.

[0016] Furthermore, the intermediate connecting copper busbar is provided with a first balancing copper busbar and a second balancing copper busbar, and the first balancing copper busbar and the second balancing copper busbar are staggered and overlapped on the intermediate connecting copper busbar.

[0017] Furthermore, the first IGBT module and the second IGBT module are respectively provided with a first gate plate and a second gate plate, and the first gate plate and the second gate plate are electrically connected to the drive control board.

[0018] Furthermore, a first dustproof plate and a second dustproof plate are respectively provided above the first gate plate and the second gate plate;

[0019] The first dustproof plate is connected to the liquid cooling plate via a first support column, the end of the second dustproof plate near the first side plate is connected to the drive control board via an insulating column, and the end of the second dustproof plate near the second side plate is connected to the liquid cooling plate via a second support column.

[0020] Furthermore, the drive control board is disposed on the side of the second IGBT module near the first side plate, and the drive control board is connected to the liquid cooling plate through the first support column.

[0021] Furthermore, the liquid cooling plate is respectively provided with an input insulating plate, an intermediate insulating plate and an output insulating plate;

[0022] The input insulating plate is disposed below the connection between the input stacked busbar and the first IGBT module;

[0023] The intermediate insulating plate is disposed below the intermediate connecting copper busbar at the connection points with the first IGBT module and the second IGBT module, respectively;

[0024] The output insulation plate is disposed below the connection between the AC output copper busbar and the second IGBT module, and the output insulation plate is threadedly connected to the first mounting plate.

[0025] Secondly, this utility model also provides an energy storage inverter, which is provided with an energy storage power module as described in any of the first aspects above.

[0026] Compared with existing technologies, the energy storage power module and energy storage inverter provided by this utility model effectively optimize the heat dissipation path of the energy storage power module by installing a liquid cooling plate in the middle of the mounting bracket. Compared with the traditional air cooling method, liquid cooling can more quickly remove heat from the power module and electrical components. The liquid cooling plate is equipped with a first IGBT module and a second IGBT module. Above the first IGBT module and the second IGBT module are an input stacked busbar, an intermediate connecting copper busbar, and an AC output copper busbar. This not only reduces the complexity of the connection lines and reduces line losses, but also effectively avoids overheating, failure, or damage to components due to high temperatures, thus effectively improving the heat dissipation efficiency of the energy storage module. Attached Figure Description

[0027] Figure 1 A schematic diagram of the overall structure of an energy storage power module provided in an embodiment of this utility model;

[0028] Figure 2 A schematic diagram of the structure of an IGBT module provided in an embodiment of this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of a mounting bracket provided in an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of a gate plate provided for an embodiment of the present utility model.

[0031] Among them, 10 is a mounting bracket, 11 is a first mounting plate, 12 is a first side plate, 13 is a second side plate, 14 is a handle, 15 is a first support bracket, 16 is a second support bracket, 20 is a liquid cooling plate, 31 is a first IGBT module, 311 is the first end of the first IGBT module, 312 is the second end of the first IGBT module, 32 is a second IGBT module, 321 is the first end of the second IGBT module, 322 is the second end of the second IGBT module, 41 is an input stacked busbar, 42 is an intermediate connecting copper busbar, and 421 is an intermediate connecting copper busbar. The first end, 422 is the first end of the intermediate connecting copper busbar, 43 is the AC output copper busbar, 441 is the first equalizing copper busbar, 442 is the second equalizing copper busbar, 50 is the drive control board, 61 is the first support column, 62 is the second support column, 63 is the insulating column, 70 is the insulating beam, 71 is the L-shaped insulating profile, 711 is the horizontal panel, 712 is the vertical panel, 73 is the absorption capacitor, 81 is the first gate plate, 82 is the second gate plate, 83 is the first dustproof plate, 84 is the second dustproof plate, 91 is the input insulating plate, 92 is the intermediate insulating plate, and 93 is the output insulating plate. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0033] To make the description of this disclosure more detailed and complete, illustrative descriptions of the embodiments and specific examples of this utility model are provided below; however, this is not the only form of implementing or using the specific embodiments of this utility model. The embodiments cover the features of multiple specific embodiments and the methods, steps, and their order for constructing and operating these specific embodiments. However, other specific embodiments can also be used to achieve the same or equivalent functions and step sequences. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0034] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in sequences other than those illustrated or described herein.

[0035] In the description of the embodiments of this utility model, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The word "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more. Other quantifiers should be understood similarly. The preferred embodiments described herein are only used to illustrate and explain this utility model and are not intended to limit this utility model. Furthermore, the embodiments and features in the embodiments of this application can be combined with each other without conflict.

[0036] To address the technical problem of low heat dissipation efficiency in the aforementioned energy storage power modules, this utility model provides an energy storage power module and an energy storage inverter. In a first aspect, this utility model provides an energy storage power module, please refer to... Figures 1-2 , Figure 1 This is a schematic diagram of the overall structure of an energy storage power module provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of an IGBT module provided in an embodiment of the present invention. The energy storage power module includes a mounting bracket 10, a liquid cooling plate 20 mounted in the middle of the mounting bracket 10, a first IGBT module 31 and a second IGBT module 32 disposed on the liquid cooling plate 20, and an input stacked busbar 41, an intermediate connecting copper busbar 42 and an AC output copper busbar 43 disposed above the first IGBT module 31 and the second IGBT module 32. The first end 311 of the first IGBT module is connected to the input stacked busbar 41, and the second end 312 of the first IGBT module is connected to the first end 421 of the intermediate connecting copper busbar. The first end 321 of the second IGBT module is connected to the second end 422 of the intermediate connecting copper busbar, and the second end 322 of the second IGBT module is connected to the AC output copper busbar 43. A drive control board 50 is disposed above the second IGBT module 32, and the drive control board 50 is fixedly connected to the liquid cooling plate 20 through a first support column 61.

[0037] Specifically, in this embodiment of the invention, the energy storage power module uses a liquid-cooled plate 20 as the core heat dissipation device. Compared with the traditional air-cooled heat dissipation method, it has higher heat dissipation efficiency, effectively reducing the heat generated by the power module during operation. This ensures that the components on the liquid-cooled plate 20 can maintain a low temperature even under high load operation, reducing the impact of overheating on the performance and lifespan of the energy storage power module, and improving the overall reliability and stability of the equipment. The first IGBT module 31 and the second IGBT module 32 are efficiently electrically connected through the input stacked busbar 41, the intermediate connecting copper busbar 42, and the AC output copper busbar 43. This not only reduces the complexity of the connection lines and lowers line losses, but also effectively avoids electrical interference and improves the electrical performance of the system. In addition, the drive control board 50 of the energy storage power module is fixedly connected to the liquid-cooled plate 20 through the first support column 61, simplifying the structure of the components, facilitating later fault detection and replacement maintenance, and improving the maintainability and long-term operational reliability of the energy storage power module.

[0038] For further improvements to this utility model, please refer to... Figure 3 , Figure 3 This is a schematic diagram of a mounting bracket provided in an embodiment of the present invention. The mounting bracket 10 includes a first mounting plate 11, a first side plate 12 and a second side plate 13 perpendicularly connected to the first mounting plate 11, and a handle 14 disposed on the outside of the first mounting plate 11. The first side plate 12 and the second side plate 13 are disposed opposite to each other, and the first side plate 12 and the second side plate 13 are respectively connected to both ends of the liquid cooling plate 20. The mounting bracket 10 also includes a first support bracket 15 and a second support bracket 16, which are respectively connected to the first side plate 12 and the second side plate 13. Specifically, in this embodiment of the present invention, the mounting bracket 10 forms a stable frame structure through the combined design of the first mounting plate 11, the first side plate 12, the second side plate 13, the first support bracket 15, and the second support bracket 16. This structure effectively enhances the overall support of the mounting bracket, ensuring the firmness and stability of the liquid cooling plate 20 and other components during installation, and avoiding damage to the components caused by vibration or external force. In addition, a handle 14 is provided on the outside of the first mounting plate 11, which makes the installation and disassembly of the energy storage power module more convenient and quick.

[0039] For further improvements to this utility model, please refer to... Figure 1 and Figure 3An insulating beam 70 is connected to the side of the liquid cooling plate 20 near the input busbar 41. The input busbar 41 is mounted on the top of the insulating beam 70, and the insulating beam 70 is an integrally formed L-shaped insulating profile 71. The L-shaped insulating profile 71 includes a horizontal panel 711 and a vertical panel 712 perpendicularly connected to the horizontal panel 711. The two ends of the horizontal panel 711 are respectively connected to the first support bracket 15 and the second support bracket 16, and the vertical panel 712 is connected to the side of the liquid cooling plate 20 near the input busbar 41. Specifically, in this embodiment of the present invention, the insulating beam 70 adopts an L-shaped insulating profile 71, which ensures electrical isolation between the liquid cooling plate 20 and the input busbar 41, effectively avoiding equipment damage caused by electrical short circuits or leakage.

[0040] For further improvements to this utility model, please refer to... Figure 2 The input busbar 41 is equipped with an absorption capacitor 73, which is connected to the first terminal 311 of the first IGBT module. Specifically, in this embodiment of the invention, during the IGBT device's turn-on and turn-off processes, voltage spikes or oscillations often occur in the circuit due to the presence of parasitic inductance and capacitance. The absorption capacitor 73 can quickly absorb these voltage spikes, suppressing surges and effectively protecting the first IGBT module from overvoltage impacts, thereby improving its operational reliability and service life.

[0041] As a further improvement of this invention, both the first IGBT module 31 and the second IGBT module 32 are type I three-level topologies. Specifically, in this embodiment, the type I three-level topology, by introducing an additional voltage level, can produce a smoother transition in the output voltage waveform and reduce harmonic components in the voltage waveform.

[0042] For further improvements to this utility model, please refer to... Figure 3 The intermediate connecting copper busbar 42 is provided with a first balancing copper busbar 441 and a second balancing copper busbar 442, and the first balancing copper busbar 441 and the second balancing copper busbar 442 are staggered and overlapped on the intermediate connecting copper busbar 42. Specifically, in this embodiment of the present invention, each intermediate connecting copper busbar 42 is independently arranged, and the first balancing copper busbar 441 and the second balancing copper busbar 442 can be staggered and overlapped on the intermediate connecting copper busbar 42, so that the current distribution is more uniform, avoiding local current overload, thereby ensuring the stable operation of each electrical component.

[0043] For further improvements to this utility model, please refer to... Figure 4 , Figure 4This is a schematic diagram of a gate plate provided in an embodiment of the present invention. A first gate plate 81 and a second gate plate 82 are respectively disposed on the first IGBT module 31 and the second IGBT module 32, and the first gate plate 81 and the second gate plate 82 are electrically connected to the drive control board 50. Specifically, in this embodiment of the present invention, since the first gate plate 81 and the second gate plate 82 control the first IGBT module and the second IGBT module respectively, the drive control board 50 can adjust the switching behavior of each IGBT module according to actual needs, providing a more flexible control strategy.

[0044] For further improvements to this utility model, please refer to... Figure 1 and 3 A first dustproof plate 83 and a second dustproof plate 84 are respectively provided above the first gate plate 81 and the second gate plate 82. The first dustproof plate 83 is connected to the liquid cooling plate 20 through a first support column 61. The end of the second dustproof plate 84 near the first side plate is connected to the drive control board 50 through an insulating column 63, and the end of the second dustproof plate 84 near the second side plate is connected to the liquid cooling plate 20 through a second support column 62. Specifically, in this embodiment of the present invention, since the first gate plate 81 and the second gate plate 82 are directly connected to the drive control board 50, if their surfaces are covered with dust or dirt, it may lead to a decrease in electrical performance, or even cause a short circuit or malfunction. Setting up dustproof plates can effectively isolate external pollution and reduce the risk of electrical component failure.

[0045] For further improvements to this utility model, please refer to... Figure 1 The drive control board 50 is disposed on the side of the second IGBT module 32 near the first side plate 12, and the drive control board 50 is connected to the liquid cooling plate 20 via the first support column 61. Specifically, in this embodiment of the present invention, the drive control board 50 is disposed on the side of the second IGBT module 32 near the first side plate 12. This design effectively utilizes space, avoids wasting space inside the energy storage power module, and improves the integration between components. In addition, the drive control board 50 is connected to the liquid cooling plate 20 via the first support column 61, which allows the liquid flow to remove high temperatures, effectively utilizing the heat dissipation capacity of the liquid cooling plate 20 and ensuring that the drive control board 50 can maintain a suitable operating temperature during high-power operation.

[0046] For further improvements to this utility model, please refer to... Figures 1-2The liquid cooling plate 20 is respectively provided with an input insulating plate 91, an intermediate insulating plate 92, and an output insulating plate 93. The input insulating plate 91 is located below the connection between the input stacked busbar 41 and the first IGBT module 31. The intermediate insulating plate 92 is located below the connection between the intermediate connecting copper busbar 42 and the first IGBT module 31 and the second IGBT module 32, respectively. The output insulating plate 93 is located below the connection between the AC output copper busbar 43 and the second IGBT module 32, and the output insulating plate is threadedly connected to the first mounting plate. Specifically, in this embodiment of the present invention, the input insulating plate 91, the intermediate insulating plate 92, and the output insulating plate 93 serve as electrical isolation components, effectively isolating high-voltage and low-voltage areas and preventing short circuits caused by electrical faults or poor contact. The reasonable arrangement of these insulating plates ensures that no direct electrical contact occurs between different voltage sections, improving the safety of the entire energy storage power module.

[0047] On the other hand, this invention also provides an energy storage inverter, which incorporates the energy storage power module described above. Compared to traditional structures, the energy storage inverter of this invention has a more compact structure and higher heat dissipation efficiency.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An energy storage power module, characterized in that, include: The mounting bracket has a liquid cooling plate installed in the middle, and a first IGBT module and a second IGBT module are arranged on the liquid cooling plate. An input stacked busbar, an intermediate connecting copper busbar and an AC output copper busbar are arranged above the first IGBT module and the second IGBT module. The first end of the first IGBT module is connected to the input stacked busbar, and the second end of the first IGBT module is connected to the first end of the intermediate connecting copper busbar; the first end of the second IGBT module is connected to the second end of the intermediate connecting copper busbar, and the second end of the second IGBT module is connected to the AC output copper busbar. A drive control board is provided above the second IGBT module, and the drive control board is fixedly connected to the liquid cooling plate through a first support column.

2. The energy storage power module according to claim 1, characterized in that, The mounting bracket includes a first mounting plate, a first side plate and a second side plate perpendicularly connected to the first mounting plate, and a handle disposed on the outside of the first mounting plate; The first side plate and the second side plate are disposed opposite to each other, and the first side plate and the second side plate are respectively connected to both ends of the liquid cooling plate; The mounting bracket further includes a first support bracket and a second support bracket, which are respectively connected to the first side plate and the second side plate.

3. The energy storage power module according to claim 2, characterized in that, An insulating beam is connected to the side of the liquid cooling plate near the input stacked busbar. The input stacked busbar is installed on the top of the insulating beam, and the insulating beam is an integrally formed L-shaped insulating profile. The L-shaped insulating profile includes a horizontal panel and a vertical panel that is perpendicularly connected to the horizontal panel. The two ends of the horizontal panel are respectively connected to the first support bracket and the second support bracket. The vertical panel is connected to the side of the liquid cooling plate near the input stacked busbar.

4. The energy storage power module according to claim 1, characterized in that, An absorption capacitor is provided on the input stack busbar, and the absorption capacitor is connected to the first end of the first IGBT module.

5. The energy storage power module according to claim 1, characterized in that, The intermediate connecting copper busbar is provided with a first balancing copper busbar and a second balancing copper busbar, and the first balancing copper busbar and the second balancing copper busbar are staggered and overlapped on the intermediate connecting copper busbar.

6. The energy storage power module according to claim 1, characterized in that, The first IGBT module and the second IGBT module are respectively provided with a first gate plate and a second gate plate, and the first gate plate and the second gate plate are electrically connected to the drive control board.

7. The energy storage power module according to claim 6, characterized in that, A first dustproof plate and a second dustproof plate are respectively provided above the first gate plate and the second gate plate; The first dustproof plate is connected to the liquid cooling plate via a first support column; the end of the second dustproof plate near the first side plate is connected to the drive control board via an insulating column, and the end of the second dustproof plate near the second side plate is connected to the liquid cooling plate via a second support column.

8. The energy storage power module according to claim 7, characterized in that, The drive control board is located on the side of the second IGBT module near the first side plate, and the drive control board is connected to the liquid cooling plate through the first support column.

9. The energy storage power module according to claim 2, characterized in that, The liquid cooling plate is respectively provided with an input insulating plate, an intermediate insulating plate and an output insulating plate; The input insulating plate is disposed below the connection between the input stacked busbar and the first IGBT module; The intermediate insulating plate is disposed below the intermediate connecting copper busbar at the connection points with the first IGBT module and the second IGBT module, respectively; The output insulation plate is disposed below the connection between the AC output copper busbar and the second IGBT module, and the output insulation plate is threadedly connected to the first mounting plate.

10. An energy storage inverter, characterized in that, It is equipped with an energy storage power module as described in any one of claims 1-9.

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