High-power-density modular energy storage converter

Abstract

The utility model provides a high-power-density modularized energy storage converter, which belongs to the technical field of power electronics and comprises a box body, an inductor supporting plate, a radiator, an air duct shielding plate, an inductor, a power supply, a first fan, a second fan and an electrical assembly. The inductor supporting plate, the radiator and the air duct shielding plate are sequentially connected, and an inner cavity of the box body is divided into an upper cavity body and a lower cavity body. The inductor is fixedly installed below the inductor supporting plate, the power source and the first draught fan are located in the lower cavity, and the second draught fan and the electrical assembly are located in the upper cavity. According to the high-power-density modularized energy storage converter provided by the utility model, the inner cavity of the box body is divided into the upper cavity and the lower cavity by the inductor supporting plate, the radiator and the air duct shielding plate, the first fan carries out heat dissipation on the inductor and the power supply through the radiator, and the second fan carries out heat dissipation on the electrical assembly. By optimizing the layout, an upper heat dissipation air duct and a lower heat dissipation air duct which are independent are formed, and therefore the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power electronics, and more specifically, relates to a high-power density modular energy storage converter. Background Art

[0002] Energy storage converter is a series compensation device with energy storage device (system). With the rapid development of power electronics technology, energy storage users have higher and higher requirements on the application cost and volume of energy storage scenarios. In order to meet the above application requirements, energy storage systems have emerged, and different manufacturers are developing energy storage devices of different power levels. The existing energy storage converter has poor heat dissipation due to the unreasonable arrangement of components in the box. Utility Model Content

[0003] The utility model aims to provide a high power density modular energy storage converter, aiming to solve the problem of poor heat dissipation effect of the existing energy storage converter.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a high power density modular energy storage inverter, including: a box, an inductor support plate, a heat sink, an air duct shield, an inductor, a power supply, a first fan, a second fan and electrical components; the inductor support plate, the heat sink and the air duct shield are connected in sequence to divide the inner cavity of the box into an upper cavity and a lower cavity; the inductor is fixedly installed below the inductor support plate, the power supply and the first fan are located in the lower cavity, and the second fan and the electrical components are located in the upper cavity.

[0005] In a possible implementation, the box body includes a chassis, a top cover, a front panel and a rear panel; the top cover is installed on the top of the chassis, and the front panel and the rear panel are installed on the front side and the rear side of the chassis respectively.

[0006] In a possible implementation manner, the first fan and the second fan are both installed on the inner side wall of the front panel.

[0007] In a possible implementation, there are multiple first fans, and a partition is installed between two adjacent first fans.

[0008] In one possible implementation, the electrical component includes a relay board, a main control board, a drive board and a capacitor board; the relay board is fixedly installed above the inductor support board, the main control board is fixedly installed above the relay board, the drive board is fixedly installed above the radiator, and the capacitor board is fixedly installed above the drive board.

[0009] In a possible implementation, the inductor support plate, the heat sink, and the air duct shield are all fixedly connected to the side wall of the chassis.

[0010] In a possible implementation, the power supply is fixedly mounted on the chassis and is located on a side close to the rear panel.

[0011] In a possible implementation manner, a soft-start resistor is fixedly installed on one side of the power supply.

[0012] In a possible implementation manner, both the front panel and the rear panel are equipped with external ports.

[0013] In a possible implementation, the electrical component further includes a DC contactor and a DC fuse, and the DC contactor and the DC fuse are both installed above the relay board.

[0014] Compared with the prior art, the scheme shown in the embodiment of the present application is a high power density modular energy storage converter of the utility model, in which the inductor support plate, the heat sink and the air duct shield separate the inner cavity of the box into an upper cavity and a lower cavity, the inductor and the power supply are both located in the lower cavity, the electrical components are located in the upper cavity, the first fan dissipates heat from the inductor and the power supply through the heat sink, and the second fan dissipates heat from the electrical components. By optimizing the layout, two independent upper and lower heat dissipation ducts are formed, thereby improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a high power density modular energy storage converter provided by an embodiment of the utility model;

[0017] Figure 2 A front view of a high power density modular energy storage converter provided by an embodiment of the utility model;

[0018] Figure 3 A rear view of a high power density modular energy storage converter provided by an embodiment of the utility model;

[0019] Figure 4 A left view of a high power density modular energy storage converter (with the chassis hidden) provided in an embodiment of the utility model;

[0020] Figure 5 A right view of a high power density modular energy storage converter (with the chassis hidden) provided in an embodiment of the utility model;

[0021] Figure 6 A top view of a high power density modular energy storage converter (with the chassis hidden) provided in an embodiment of the utility model.

[0022] In the figure: 101, upper cavity; 102, lower cavity; 103, chassis; 104, top cover; 105, front panel; 106, rear panel; 107, partition; 2, inductor support plate; 3, radiator; 4, air duct shield; 5, inductor; 6, power supply; 7, first fan; 8, second fan; 901, relay board; 902, main control board; 903, drive board; 904, capacitor board; 905, soft-start resistor; 906, external port; 907, DC contactor; 908, DC fuse. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] Please also read Figures 1 to 6 , a high power density modular energy storage converter provided by the utility model is now described. The high power density modular energy storage converter comprises: a box, an inductor support plate 2, a heat sink 3, an air duct shield 4, an inductor 5, a power supply 6, a first fan 7, a second fan 8 and electrical components; the inductor support plate 2, the heat sink 3 and the air duct shield 4 are connected in sequence to separate the inner cavity of the box into an upper cavity 101 and a lower cavity 102; the inductor 5 is fixedly installed below the inductor support plate 2, the power supply 6 and the first fan 7 are located in the lower cavity 102, and the second fan 8 and the electrical components are located in the upper cavity 101.

[0025] Compared with the prior art, the high power density modular energy storage converter provided in this embodiment has an inductor support plate 2, a heat sink 3 and a duct shield 4 that separate the inner cavity of the box into an upper cavity 101 and a lower cavity 102. The inductor 5 and the power supply 6 are both located in the lower cavity 102, and the electrical components are located in the upper cavity 101. The first fan 7 dissipates heat from the inductor 5 and the power supply 6 through the heat sink 3, and the second fan 8 dissipates heat from the electrical components. By optimizing the layout, two independent upper and lower heat dissipation ducts are formed, thereby improving the heat dissipation effect.

[0026] In this embodiment, the power source 6 is placed in the lower cavity 102, thereby effectively utilizing the redundant space in the lower cavity 102, effectively reducing the total volume of the energy storage converter, and improving the power density per unit volume.

[0027] In some embodiments, see Figure 1 The box body includes a chassis 103, a top cover 104, a front panel 105 and a rear panel 106; the top cover 104 is installed on the top of the chassis 103, and the front panel 105 and the rear panel 106 are installed on the front side and the rear side of the chassis 103 respectively. In this embodiment, the chassis 103 is a U-shaped member, and the top cover 104, the front panel 105 and the rear panel 106 can be detachably installed on the chassis 103, thereby forming a closed cavity. Maintenance personnel can disassemble and assemble components in the box body by opening the top cover 104, the front panel 105 and the rear panel 106, and the operation is more convenient.

[0028] In some embodiments, see Figure 4 and Figure 5 , the first fan 7 and the second fan 8 are both mounted on the inner side wall of the front panel 105. In this embodiment, the first fan 7 and the second fan 8 are integrated with the front panel 105, thereby facilitating the disassembly and assembly operation and saving assembly time.

[0029] In some embodiments, see Figure 4 , there are multiple first fans 7, and a partition 107 is installed between two adjacent first fans 7. In this embodiment, there are four first fans 7, which are evenly arranged in the horizontal direction. One end of the partition 107 is fixedly mounted on the inner wall of the front panel 105, and the partition 107 is perpendicular to the front panel 105. The radiator 3 is close to the front panel 105 and is close to the first fans 7. The partition 107 separates two adjacent first fans 7, so that each first fan 7 forms a separate air duct, which is conducive to smoother air flow at the air inlet of the radiator 3, and solves the problem of excessive wind resistance caused by the close distance between the radiator 3 and the first fan 7, thereby reducing the wind speed on the air inlet side of the radiator 3.

[0030] In some embodiments, see Figure 5, the electrical components include a relay board 901, a main control board 902, a drive board 903 and a capacitor board 904; the relay board 901 is fixedly mounted above the inductor support board 2, the main control board 902 is fixedly mounted above the relay board 901, the drive board 903 is fixedly mounted above the radiator 3, and the capacitor board 904 is fixedly mounted above the drive board 903. In this embodiment, the inductor 5 and the relay board 901 are respectively located on the upper and lower sides of the inductor support board 2, thereby shortening the connection distance between the two components of the inductor 5 and the relay board 901, making the structure more compact. The relay board 901 and the main control board 902, the drive board 903 and the capacitor board 904 are all stacked in a stacked manner, which effectively utilizes the space in the upper cavity 101 and further reduces the total volume of the energy storage converter.

[0031] In some embodiments, see Figures 4 to 6 , the inductor support plate 2, the heat sink 3 and the air duct shield 4 are all fixedly connected to the side walls of the chassis 103. In this embodiment, the inductor support plate 2, the heat sink 3 and the air duct shield 4 are all detachably connected to the two side walls of the chassis 103. There is no fixed connection relationship between the above three components, so they can be disassembled and assembled separately, thereby improving the maintenance efficiency of maintenance personnel.

[0032] In some embodiments, see Figure 4 and Figure 5 The power supply 6 is fixedly mounted on the chassis 103 and is located on a side close to the rear panel 106. In this embodiment, since the power supply 6 is located on a side close to the rear panel 106, the power supply 6 can be replaced separately after the rear panel 106 is disassembled.

[0033] In some embodiments, see Figure 5 A soft-start resistor 905 is fixedly mounted on one side of the power supply 6. In this embodiment, the soft-start resistor 905 is fixedly mounted on the bottom surface of the chassis 103. The soft-start resistor 905 is also close to the rear panel 106, which is convenient for replacement and can also achieve good heat dissipation.

[0034] In some embodiments, see Figure 2 , Figure 3 and Figure 6 , both the front panel 105 and the rear panel 106 are equipped with external ports 906. In this embodiment, the external ports 906 include a network port, a 24V terminal interface, and an external I / O interface. The front panel 105 and the rear panel 106 are designed to be compatible in structure. Under the condition that the length of the internal electrical wiring is not changed, the operator can perform secondary wiring operations from the front or rear side of the energy storage converter according to different installation environments during assembly.

[0035] In some embodiments, see Figure 6The electrical assembly further includes a DC contactor 907 and a DC fuse 908, both of which are mounted above the relay board 901. In this embodiment, the DC contactor 907 and the DC fuse 908 are connected to the capacitor board 904 via a copper busbar.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high power density modular energy storage converter, characterized in that: include: A box body, an inductor support plate, a heat sink, an air duct shield, an inductor, a power supply, a first fan, a second fan and electrical components; the inductor support plate, the heat sink and the air duct shield are connected in sequence to divide the inner cavity of the box body into an upper cavity and a lower cavity; the inductor is fixedly installed below the inductor support plate, the power supply and the first fan are located in the lower cavity, and the second fan and the electrical components are located in the upper cavity.

2. A high power density modular energy storage converter according to claim 1, characterized in that: The box body comprises a chassis, a top cover, a front panel and a rear panel; the top cover is installed on the top of the chassis, and the front panel and the rear panel are installed on the front side and the rear side of the chassis respectively.

3. A high power density modular energy storage converter as claimed in claim 2, characterized in that: The first fan and the second fan are both installed on the inner side wall of the front panel.

4. A high power density modular energy storage converter as claimed in claim 3, characterized in that: There are multiple first fans, and a partition is installed between two adjacent first fans.

5. A high power density modular energy storage converter as claimed in claim 1, characterized in that: The electrical components include a relay board, a main control board, a drive board and a capacitor board; the relay board is fixedly installed above the inductor support board, the main control board is fixedly installed above the relay board, the drive board is fixedly installed above the radiator, and the capacitor board is fixedly installed above the drive board.

6. A high power density modular energy storage converter as claimed in claim 2, characterized in that: The inductor support plate, the heat sink and the air duct shield are all fixedly connected to the side wall of the chassis.

7. A high power density modular energy storage converter as claimed in claim 2, characterized in that: The power supply is fixedly mounted on the chassis and is located on a side close to the rear panel.

8. A high power density modular energy storage converter as claimed in claim 7, characterized in that: A soft-start resistor is fixedly installed on one side of the power supply.

9. A high power density modular energy storage converter as claimed in claim 7, characterized in that: The front panel and the rear panel are both equipped with external ports.

10. A high power density modular energy storage converter as claimed in claim 5, characterized in that: The electrical assembly further includes a DC contactor and a DC fuse, both of which are mounted above the relay board.

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