Energy storage converter

Abstract

The invention relates to the technical field of energy storage, in particular to an energy storage converter which comprises a shell, the shell is provided with a first containing cavity, a second containing cavity and a third containing cavity which are distributed in the first direction, the first containing cavity is provided with an inductor, a radiator and a first cooling fan, and the second containing cavity is provided with a high-voltage box, a power device and a heating electronic device; the third accommodating cavity is provided with a control board, an anti-interference board and a power board; a first partition plate and a second partition plate which are distributed in a spaced mode in the second direction are arranged between the first containing cavity and the second containing cavity, the first partition plate can support the high-voltage box, and the second partition plate can support the heating electronic device; along a second direction, the power device is arranged between the first partition plate and the second partition plate, and the second direction is perpendicular to the first direction; a first supporting plate is arranged between the second containing cavity and the third containing cavity and supports the control plate, the anti-interference plate and the power panel. The energy storage converter is high in space utilization rate, small in size and high in operation stability.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to an energy storage converter. Background Art

[0002] The Power Conversion System (PCS) is a converter in the energy storage system that is connected between the battery system and the power grid or load to achieve bidirectional conversion of electric energy. It converts AC to DC by controlling the charging and discharging process of the battery. It can directly supply power to AC loads without a power grid and is an important part of the entire energy storage system.

[0003] In order to realize its function, the energy storage inverter needs to integrate structures such as inductors, high-voltage boxes, power devices, and heat-generating electronic devices. The existing energy storage inverters have low internal space utilization and complex structures, resulting in large energy storage inverters and poor operating stability. Summary of the invention

[0004] The present application provides an energy storage converter, which is used to solve the problems of large size and poor operating stability of the energy storage converter.

[0005] An energy storage converter provided in an embodiment of the present application includes: a housing, the housing having a first accommodating chamber, a second accommodating chamber, and a third accommodating chamber distributed along a first direction, the first accommodating chamber being provided with an inductor, a radiator, and a first cooling fan, the second accommodating chamber being provided with a high-voltage box, a power device, and a heat-generating electronic device; the third accommodating chamber being provided with a control board, an anti-interference board, and a power board; A first partition plate and a second partition plate are provided between the first accommodating cavity and the second accommodating cavity, and are spaced apart along a second direction. The first partition plate can support the high-voltage box, and the second partition plate can support the heat-generating electronic device. Along the second direction, the power device is arranged between the first partition plate and the second partition plate, and the second direction is perpendicular to the first direction. A first support plate is provided between the second accommodating cavity and the third accommodating cavity, and the first support plate supports the control board, the anti-interference board and the power board.

[0006] In a possible design, along the second direction, the inductor, the heat sink, and the first cooling fan are sequentially arranged at intervals; the first partition plate is located above the first cooling fan, and the second partition plate is located above the inductor.

[0007] In a possible design, the first accommodating cavity is further provided with a support block, and along the first direction, one end of the support block contacts the radiator, and the other end contacts the bottom wall of the shell, so that there is a gap between the radiator and the bottom wall of the shell.

[0008] In a possible design, the first partition plate includes: a first body, a first extension portion and a first fixing portion, the first body being capable of supporting the high-voltage box; the first extension portion being arranged on the side of the first body facing the second partition plate, and extending to the top of the radiator along the second direction, and being connected to the radiator; the first fixing portion being arranged on the outer periphery of the first body and being connected to the shell, and the first fixing portion extending along the first direction.

[0009] In a possible design, the second partition plate includes: a second body, a second extension portion and a second fixing portion, the second body being capable of supporting the heat-generating electronic device; the second extension portion being arranged on the side of the second body facing the first partition plate, and extending to above the radiator along the second direction and being connected to the radiator; the second fixing portion being arranged on the outer periphery of the second body and being connected to the shell, and the second fixing portion extending along the first direction.

[0010] In a possible design, the power device includes: a power board, the power board is in contact with the heat sink, and along the second direction, two ends of the power board are respectively connected to the first extension portion and the second extension portion.

[0011] In a possible design, the second body is provided with a first connecting groove; the heat-generating electronic device includes: a busbar, and the busbar is rigidly connected to the inductor through the first connecting groove.

[0012] In a possible design, the heat-generating electronic device further includes: a filter capacitor plate and an AC output plate, both of which are rigidly connected to the busbar; along a third direction, the filter capacitor plate and the AC output plate are sequentially arranged on a side of the busbar away from the second partition plate, and the third direction is perpendicular to the first direction and the second direction.

[0013] In a possible design, the second accommodating cavity is further provided with: a second cooling fan and a wind collecting hood, the second cooling fan is connected to the side wall of the shell; along the second direction, the second cooling fan is located on the side of the filter capacitor board away from the power board; along the first direction, the wind collecting hood covers at least part of the filter capacitor board and at least part of the second cooling fan.

[0014] In one possible design, the power device also includes an absorption capacitor plate rigidly connected to the power board. Along the first direction, the absorption capacitor plate is located on a side of the power board away from the heat sink, and the absorption capacitor plate is connected to the high-voltage box via a copper busbar.

[0015] In a possible design, the first support plate includes: a third body, a third extension portion and a third fixed portion, the third body being capable of supporting the control board, the anti-interference board and the power board; the third extension portion being arranged on a side of the third body facing the high-voltage box, and the third extension portion extending along the first direction toward the power device to shield at least part of the power device; the third fixed portion being arranged on the periphery of the third body and connected to the shell, and the third fixed portion extending along the first direction away from the power device.

[0016] In a possible design, the third extension portion is provided with a second connecting groove, and the power device is rigidly connected to the high-voltage box via the second connecting groove.

[0017] In a possible design, the third body has a first platform and a second platform with different heights in a first direction, the first platform can support the control board and the power board, and the second platform can support the anti-interference board.

[0018] In a possible design, an insulating member is provided on a side of the third body away from the power device.

[0019] In a possible design, there is also a second support plate between the second accommodating cavity and the third accommodating cavity, and the second support plate includes: a fourth body, a fourth fixing portion and a fifth fixing portion, the fourth body supports the battery management portion, the fourth fixing portion is connected to the third body, and the fifth fixing portion is connected to the shell; along the first direction, the fourth fixing portion and the fifth fixing portion extend in opposite directions.

[0020] In the present application, by stacking the devices in the energy storage converter at high density in three accommodating chambers, the space utilization rate in the energy storage converter is high, the structure is simple and orderly, and the assembly and maintenance of the energy storage converter are convenient. The first partition plate and the second partition plate divide the first accommodating chamber and the second accommodating chamber, and the boundary between the first accommodating chamber and the second accommodating chamber is clear. The first partition plate provides stable support for the high-voltage box, so that the high-voltage box can operate stably during the operation of the energy storage converter. The second partition plate provides stable support for the heat-generating electronic devices, so that the heat-generating electronic devices can operate stably during the operation of the energy storage converter. At the same time, the first partition plate and the second partition plate facilitate the installation of the high-voltage box, the heat-generating electronic devices and the power devices, which can improve the space utilization rate inside the energy storage converter and reduce the volume of the energy storage converter. The first support plate divides the second accommodating chamber and the third accommodating chamber, and the first support plate provides support for the control board, the anti-interference board and the power board, so that the control board, the anti-interference board and the power board can operate stably during the operation of the energy storage converter. At the same time, the first support plate facilitates the installation of the control board, the anti-interference board and the power board, which can further improve the space utilization inside the energy storage inverter and reduce the volume of the energy storage inverter.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of the energy storage converter provided in this application in a specific embodiment; Figure 2 for Figure 1 Rear view of Figure 3 for Figure 2 Sectional view along AA direction; Figure 4 for Figure 1 A schematic diagram of the structure of the reserved part of the housing and the first accommodating cavity of the energy storage converter; Figure 5 For Figure 4 A schematic diagram of a structure in which a first partition plate and a second partition plate are added to the base; Figure 6 for Figure 5 A schematic diagram of the structure of the first partition plate, the second partition plate and the first accommodating chamber; Figure 7 For Figure 5 On the basis of the above, a structural diagram of a high-voltage box, a power board and a busbar is added; Figure 8 For Figure 7 A schematic diagram of a structure in which an absorption capacitor plate, a filter capacitor plate and an AC output plate are added to the base; Fig. 9For Figure 8 A schematic diagram of a structure in which a first support plate, a second support plate and a wind collecting cover are added to the base; Fig.10 is a partial structural schematic diagram of the second accommodating chamber; Fig.11 For Fig. 9 A structural schematic diagram of the structure in the third accommodating cavity is added on the basis; Fig.12 for Fig.11 A schematic structural diagram of the first support plate; Fig.13 for Fig.11 Schematic diagram of the structure of the middle part; Fig.14 for Fig.11 Schematic diagram of the structure of the second support plate.

[0023] Reference numerals: 1- housing; 11- first air inlet; 12- first air outlet; 13- Second air inlet; 14- third air inlet; 15- Second air outlet; 2- first accommodating chamber; 21-Inductor; 22- Radiator; 23- first cooling fan; 24-Support block 3- second accommodating chamber; 31-high voltage box; 32-power board; 33-absorption capacitor plate; 34- busbar; 35- filter capacitor plate; 36-AC output board; 37- second cooling fan; 38- Wind hood; 381-hood; 382-connection part; 4- the third accommodating chamber; 41- control panel; 42-Anti-interference board; 43-power board; 44-Battery management department; 45- third cooling fan; 5- first partition plate; 51-First ontology; 52- first extension portion; 53- first fixing portion; 6- second partition plate; 61- Second body; 61a-first connecting groove; 62- second extension; 63- second fixing portion; 7- first support plate; 71-third body; 711-First Platform; 712- Second platform; 72- third extension; 72a- second communication groove; 73- third fixing portion; 8- second support plate; 81-the fourth body; 82- fourth fixing portion; 83-Fifth fixing portion.

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0025] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0026] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0027] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0028] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0029] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0030] The present application embodiment provides an energy storage converter, such as Figure 1~Figure 3 As shown, the energy storage converter includes: a housing 1, the housing 1 has a first accommodating chamber 2, a second accommodating chamber 3 and a third accommodating chamber 4 distributed along a first direction X, the first accommodating chamber 2 is provided with an inductor 21, a radiator 22 and a first cooling fan 23, the second accommodating chamber 3 is provided with a high-voltage box 31, power devices and heat-generating electronic devices; the third accommodating chamber 4 is provided with a control board 41, an anti-interference board 42 and a power board 43. By stacking the devices in the energy storage converter in three accommodating chambers with high density, the space utilization rate in the energy storage converter is high, the structure is simple and orderly, and the assembly and maintenance of the energy storage converter are convenient.

[0031] In order to facilitate the description of the energy storage converter, the height direction of the energy storage converter is defined as the first direction X, the length direction of the energy storage converter is defined as the second direction Y, and the width direction of the energy storage converter is defined as the third direction Z. The first direction X, the second direction Y, and the third direction Z are mutually perpendicular. It can be understood that the first direction X can also be the length direction or width direction of the energy storage converter, the second direction Y can also be the width direction or height direction of the energy storage converter, and the third direction Z can also be the height direction or length direction of the energy storage converter, that is, the first direction X, the second direction Y, and the third direction Z in the present application do not limit the solution of the present application.

[0032] Specifically, a first partition plate 5 and a second partition plate 6 are provided between the first accommodating cavity 2 and the second accommodating cavity 3, and are spaced apart along the second direction Y. The first partition plate 5 can support the high-voltage box 31, and the second partition plate 6 can support the heat-generating electronic device. Along the second direction Y, the power device is arranged between the first partition plate 5 and the second partition plate 6.

[0033] The first partition plate 5 and the second partition plate 6 divide the first accommodating chamber 2 and the second accommodating chamber 3, and the boundary between the first accommodating chamber 2 and the second accommodating chamber 3 is clear. The first partition plate 5 provides stable support for the high-voltage box 31, so that the high-voltage box 31 can operate stably during the operation of the energy storage inverter. The second partition plate 6 provides stable support for the heat-generating electronic devices, so that the heat-generating electronic devices can operate stably during the operation of the energy storage inverter. At the same time, the first partition plate 5 and the second partition plate 6 facilitate the installation of the high-voltage box 31, heat-generating electronic devices and power devices, which can improve the space utilization inside the energy storage inverter and reduce the volume of the energy storage inverter.

[0034] Specifically, there is a first support plate 7 between the second accommodating chamber 3 and the third accommodating chamber 4, and the first support plate 7 supports the control board 41, the anti-interference board 42 and the power board 43. The first support plate 7 divides the second accommodating chamber 3 and the third accommodating chamber 4, and the first support plate 7 provides support for the control board 41, the anti-interference board 42 and the power board 43, so that during the operation of the energy storage converter, the control board 41, the anti-interference board 42 and the power board 43 can operate stably. At the same time, the first support plate 7 facilitates the installation of the control board 41, the anti-interference board 42 and the power board 43, which can further improve the space utilization inside the energy storage converter and reduce the volume of the energy storage converter.

[0035] The structure of the first accommodating chamber 2 is described in detail below.

[0036] like Figure 3 and Figure 4 As shown, along the second direction Y, the inductor 21, the heat sink 22 and the first cooling fan 23 are arranged in sequence. The wind blown by the first cooling fan 23 can pass through the heat sink 22 and the inductor 21 in sequence, take away the heat on the heat sink 22 and the inductor 21, and achieve cooling of the heat sink 22 and the inductor 21. The heat sink 22 includes a plurality of heat sink fins arranged at intervals, and the wind blowing toward the heat sink 22 can flow to the inductor 21 from between the heat sink fins.

[0037] like Figure 3 and Figure 6 As shown, the first accommodating chamber 2 is further provided with a support block 24. Along the first direction X, one end of the support block 24 contacts the radiator 22, and the other end contacts the bottom wall of the housing 1, so that there is a gap between the radiator 22 and the bottom wall of the housing 1. The wind blown to the radiator 22 by the first cooling fan 23 can also flow to the inductor 21 through the gap between the radiator 22 and the bottom wall of the housing 1, thereby increasing the wind volume flowing to the inductor 21. Therefore, the support block 24 is provided to improve the heat dissipation effect of both the radiator 22 and the inductor 21.

[0038] Specifically, the two support blocks 24 are supported on both sides of the heat sink 22 along the third direction Z to provide stable support for the heat sink 22 so that the heat sink 22 can operate stably.

[0039] Preferably, the gap between the radiator 22 and the bottom wall of the shell 1 satisfies: 1.5mm~2.5mm, for example 2mm, to prevent the gap from being too large to affect the heat dissipation effect of the radiator 22, and to prevent the gap from being too small so that the radiator 22 and the shell 1 do not meet the clearance assembly.

[0040] Specifically, a plurality of first cooling fans 23 are arranged side by side along the third direction Z, so that each part of the radiator 22 in the third direction Z can receive the wind blown by the first cooling fan 23. A plurality of inductors 21 are distributed in multiple rows along the second direction Y, and the inductors 21 in two adjacent rows are arranged in a staggered manner, so that the air volumes of different inductors 21 are close, and the first cooling fans 23 have close cooling effects on different inductors 21.

[0041] Preferably, the distance between the inductor 21 and the heat sink 22 satisfies: 40mm~60mm, for example: 40mm, 45mm, 50mm, 55mm, 60mm, so as to prevent the distance between the inductor 21 and the heat sink 22 from being too small or too large, resulting in less air volume for the inductor 21 and poor heat dissipation effect of the inductor 21.

[0042] More specifically, Figure 1 and Figure 2 As shown, a first air inlet 11 is provided on the side wall of the housing 1 close to the first cooling fan 23 along the second direction Y, and a first air outlet 12 is provided on the side wall away from the first cooling fan 23 along the second direction Y. When the first cooling fan 23 rotates, air with a lower external temperature can enter the first accommodating chamber 2 through the first air inlet 11, and after flowing through the radiator 22 and the inductor 21, it flows out of the first accommodating chamber 2 through the first air outlet 12, so as to keep the air pressure in the first accommodating chamber 2 within a normal range.

[0043] Further, such as Figure 5 and Figure 6 As shown, the first partition plate 5 is located above the first cooling fan 23 , and the second partition plate 6 is located above the inductor 21 , so that the heat sink 22 just corresponds to the area between the first partition plate 5 and the second partition plate 6 .

[0044] The structures of the first partition plate 5 and the second partition plate 6 are described in detail below.

[0045] Specifically, Figure 6As shown, the first partition plate 5 includes: a first body 51, a first extension portion 52 and a first fixing portion 53. The first body 51 is parallel to the plane where the second direction Y and the third direction Z are located, and can support the high-voltage box 31. The first extension portion 52 is arranged on the side of the first body 51 facing the second partition plate 6. Along the second direction Y, the first extension portion 52 extends to the top of the radiator 22 and is connected to the radiator 22, so that the radiator 22 can provide support for the first partition plate 5 and improve the installation stability of the first partition plate 5. The first fixing portion 53 is arranged on the outer periphery of the first body 51 where the first extension portion 52 is not arranged, and is connected to the housing 1 to fix the first partition plate 5 to the housing 1.

[0046] More specifically, along the first direction X, the thickness of the first extension portion 52 is thinner than the thickness of the first body 51, so that the first extension portion 52 can be connected to the heat sink 22 by screws. The first fixing portion 53 extends along the first direction X, so it can abut against the side wall of the housing 1 and be further fixed to the housing 1 by screw connection, welding, etc.

[0047] Specifically, Figure 6 As shown, the second partition plate 6 includes: a second body 61, a second extension portion 62 and a second fixing portion 63. The second body 61 is parallel to the plane where the second direction Y and the third direction Z are located, and can support the heat-generating electronic device. The second extension portion 62 is arranged on the side of the second body 61 facing the first partition plate 5. Along the second direction Y, the second extension portion 62 extends to the top of the heat sink 22 and is connected to the heat sink 22. Therefore, the heat sink 22 can provide support for the second partition plate 6 and improve the installation stability of the second partition plate 6. The second fixing portion 63 is arranged on the outer periphery of the second body 61 where the second extension portion 62 is not arranged, and is connected to the housing 1 to fix the second partition plate 6 to the housing 1.

[0048] More specifically, along the first direction X, the thickness of the second extension portion 62 is thinner than the thickness of the second body 61, so that the second extension portion 62 can be connected to the heat sink 22 by screws. The second fixing portion 63 extends along the first direction X, so it can abut against the side wall of the housing 1 and be further fixed to the housing 1 by screw connection, welding, etc.

[0049] The structure of the second accommodating chamber 3 is described in detail below.

[0050] like Figure 3 and Figure 7 As shown, the power device includes: a power board 32 , the power board 32 is in contact with the heat sink 22 , and along the second direction Y, two ends of the power board 32 are connected to the first extension portion 52 and the second extension portion 62 respectively.

[0051] During the operation of the energy storage converter, the power board 32 generates a lot of heat. Since the power board 32 is in contact with the radiator 22, the heat generated by the power board 32 can be conducted to the radiator 22, and the heat is taken away from the energy storage converter by the wind blown by the first cooling fan 23. The first extension portion 52 and the second extension portion 62 can provide support for the power board 32, so that the power board 32 is stably installed in the second accommodating cavity 3.

[0052] Preferably, along the first direction X, the height of the first extension portion 52 is lower than the height of the first body 51, and the height of the second extension portion 62 is lower than the height of the second body 61, so that the height of the power board 32 is lower than the height of the first body 51 and the second body 61 or is close to the height of the first body 51 and the second body 61, thereby improving the space utilization of the energy storage converter and reducing the volume of the energy storage converter. In addition, the bolts can simultaneously connect the power board 32, the first extension portion 52 and the heat sink 22, or simultaneously connect the power board 32, the second extension portion 62 and the heat sink 22, so as to reduce the number of screws in the energy storage converter and reduce the difficulty of assembling and disassembling the energy storage converter.

[0053] Specifically, the heat generating electronic device includes: a busbar 34, which is hard-connected to the inductor 21, so that the busbar 34 is installed and fixed, and the busbar 34 is electrically connected to the inductor 21, so there is no need to set a wiring harness connecting the inductor 21 and the busbar 34, which simplifies the structure of the energy storage converter. The hard connection can be a relatively tight connection method such as bolt connection and riveting.

[0054] Preferably, the second body 61 is provided with a first communicating groove 61 a, the first communicating groove 61 a is located above the inductor 21, and the busbar 34 is rigidly connected to the inductor 21 through the first communicating groove 61 a, so that the structure inside the energy storage converter is more concise and orderly.

[0055] like Figure 8 As shown, the heat generating electronic device further includes: a filter capacitor plate 35 and an AC output plate 36, and the filter capacitor plate 35 and the AC output plate 36 are both hard-connected to the busbar 34. Optionally, the hard connection between the filter capacitor plate 35, the AC output plate 36 and the busbar 34 can be achieved through a patch copper column and a saddle segment seat, thereby reducing the space required for installing the filter capacitor plate 35 and the AC output plate 36, and reducing the wiring harness inside the energy storage converter.

[0056] Specifically, along the third direction Z, the filter capacitor plate 35 and the AC output plate 36 are sequentially arranged on the side of the busbar 34 away from the second partition plate 6. The heat generated by the relay on the AC output plate 36 is relatively large. In order to ensure the heat dissipation effect, Fig. 9 and Fig.10 As shown, the second accommodating chamber 3 is further provided with a second cooling fan 37 , and the second cooling fan 37 is connected to the side wall of the housing 1 .

[0057] More specifically, a second air inlet 13 is provided on the side wall of the housing 1 close to the second cooling fan 37, and a second air outlet 15 is provided on the side wall of the housing 1 opposite to the side wall where the second air inlet 13 is provided. When the second cooling fan 37 rotates, air with a lower outside temperature can enter the second accommodating chamber 3 through the second air inlet 13, and then flow out of the second accommodating chamber 3 through the second air outlet 15 after passing through the AC output plate 36, thereby taking away the heat generated by the AC output plate 36 and maintaining the air pressure in the second accommodating chamber 3 within a normal range.

[0058] Optionally, since the communication terminal and the isolating switch light structure are arranged on the side wall where the second air outlet 15 is located, the second air outlet 15 avoids the communication terminal and the isolating switch. The second air outlet 15 can be a circular hole with a diameter of 5 mm, and the distance between adjacent second air outlets 15 can be 7 mm, so that more second air outlets 15 can be arranged on the side wall of the housing 1.

[0059] Furthermore, the second accommodating chamber 3 is also provided with: a wind gathering hood 38, along the second direction Y, the second cooling fan 37 is located on the side of the filter capacitor plate 35 away from the power board 32; along the first direction X, the wind gathering hood 38 covers at least part of the filter capacitor plate 35 and at least part of the second cooling fan 37 to increase the air volume of the AC output board 36 and ensure the heat dissipation effect of the second cooling fan 37 on the AC output board 36.

[0060] like Figure 8 As shown, the power device also includes an absorption capacitor plate 33 rigidly connected to the power board 32. Along the first direction X, the absorption capacitor plate 33 is located on the side of the power board 32 away from the heat sink 22. The absorption capacitor plate 33 is connected to the high-voltage box 31 through a copper busbar.

[0061] Optionally, the hard connection between the absorption capacitor plate 33 and the power plate 32 can be achieved by patch copper columns to reduce the space required for installing the absorption capacitor plate 33 and reduce the wiring harness inside the energy storage converter. The copper bar can be bent, making the connection between the absorption capacitor plate 33 and the high-voltage box 31 less difficult.

[0062] The structure of the first supporting plate 7 is described in detail below.

[0063] like Fig.12As shown, the first support plate 7 includes: a third body 71, a third extension portion 72 and a third fixing portion 73. The third body 71 can support the control board 41, the anti-interference board 42 and the power board 43; the third extension portion 72 is arranged on the side of the third body 71 facing the high-voltage box 31, and the third extension portion 72 extends along the first direction X toward the power device to shield at least part of the power device; the third fixing portion 73 is arranged on the outer periphery of the third body 71 and connected to the housing 1. The third fixing portion 73 extends along the first direction X in a direction away from the power device, so it can abut against the side wall of the housing 1, and is further fixed to the housing 1 by screw connection, welding, etc.

[0064] The first support plate 7 separates the power components from the control components (control board 41, anti-interference board 42 and power supply board 43), making the structure inside the energy storage converter simple and orderly, and facilitating the assembly and maintenance of the energy storage converter.

[0065] Preferably, an insulating member is provided on a side of the third body 71 away from the power device, and the insulating member can reduce the interference between the power device and the control device, thereby achieving effective isolation between the two and improving the operating stability of the energy storage converter.

[0066] like Fig.11 and Fig.12 As shown, the third body 71 has a first platform 711 and a second platform 712 of different heights in the first direction X, and the first platform 711 and the second platform 712 are parallel to the planes where the second direction Y and the third direction Z are located. The first platform 711 can support the control board 41 and the power board 43, and the second platform 712 can support the anti-interference board 42. The anti-interference board 42 is connected to the AC output board 36 through a copper bus. By setting the first platform 711 and the second platform 712 of different heights to adapt to the structure in the second accommodating cavity 3, the structure in the energy storage inverter is more compact, the space utilization rate of the energy storage inverter is improved, and the volume of the energy storage inverter is reduced. In addition, the first platform 711 and the second platform 712 of different heights can also improve the structural strength of the first support plate 7 and extend the service life of the first support plate 7.

[0067] Specifically, Fig.10 As shown, the wind collecting hood 38 includes: a hood body 381 and a connecting portion 382, ​​the second partition plate 6 can provide support for the hood body 381, a portion of the first platform 711 is overlapped on the hood body 381, and the hood body 381 provides support for the first platform 711, so that the state of the first platform 711 is more stable; one end of the connecting portion 382 is connected to the hood body 381, and the other end extends to the top of the second platform 712, and is connected to the second platform 712 by screws, so that the wind collecting hood 38 and the second platform 712 are firmly connected.

[0068] More specifically, two connection parts 382 are arranged on the cover body 381 at intervals, and the copper busbar connecting the anti-interference board 42 and the AC output board 36 can pass through the space between the two connection parts 382, ​​so that the internal structure arrangement of the energy storage converter is more reasonable.

[0069] like Fig.12 and Fig.13 As shown, the third extension portion 72 is provided with a second connecting groove 72 a, and the second connecting groove 72 a can avoid the copper busbar connecting the capacitor plate 33 and the high-voltage box 31 to prevent the third extension portion 72 from blocking the connection between the capacitor plate 33 and the high-voltage box 31 .

[0070] like Fig.11 and Fig.14 As shown, there is also a second support plate 8 between the second accommodating cavity 3 and the third accommodating cavity 4, and the second support plate 8 includes: a fourth body 81, a fourth fixing portion 82 and a fifth fixing portion 83, and the fourth body 81 is parallel to the plane where the second direction Y and the third direction Z are located, and can support the battery management unit 44. The fourth fixing portion 82 is connected to the third body 71 to firmly connect the second support plate 8 to the first support plate 7; the fifth fixing portion 83 is connected to the housing 1 to firmly connect the second support plate 8 to the housing 1.

[0071] Along the first direction X, the fourth fixing portion 82 and the fifth fixing portion 83 extend in opposite directions to adapt to the positions of the high-voltage box 31 and the first support plate 7, so that the structure inside the energy storage converter is more compact and the space utilization rate of the energy storage converter is improved.

[0072] In a specific embodiment, Fig.10 As shown, a third cooling fan 45 installed on the housing 1 is also provided between the second accommodating chamber 3 and the third accommodating chamber 4, and a third air inlet hole 14 is provided on the side wall of the housing 1 on which the third cooling fan 45 is installed. When the third cooling fan 45 rotates, air with a relatively low external temperature can enter the second accommodating chamber 3 and the third accommodating chamber 4 through the third air inlet hole 14, and after passing through the filter capacitor plate 35 in the second accommodating chamber 3, it flows out of the second accommodating chamber 3 through the second air outlet hole 15, and after passing through the control board 41, the anti-interference board 42 and the power board 43 in the third accommodating chamber 4, it flows out of the third accommodating chamber 4 through the second air outlet hole 15, thereby taking away the heat generated by the filter capacitor plate 35, the control board 41, the anti-interference board 42 and the power board 43.

[0073] Further, such as Fig.12 As shown, a ventilation hole is provided on the third extension portion 72 , so as to prevent the third extension portion 72 from blocking the air in the second accommodating cavity 3 from flowing toward the second air outlet 15 .

[0074] In the present application, the energy storage converter is provided with a first partition plate 5, a second partition plate 6, a first support plate 7 and a second support plate 8, so that the space inside the energy storage converter is divided into a first accommodating chamber 2, a second accommodating chamber 3 and a third accommodating chamber 4, so that the structure inside the energy storage converter is more compact. By replacing the wiring harness connection with a hard connection, the wiring harness inside the energy storage converter is less and the structure is neater. Specifically, the height of the energy storage converter in the present application can be as low as 265 mm.

[0075] At the same time, the energy storage inverter achieves heat dissipation for the structure in the first accommodating chamber 2 by setting a first cooling fan 23, achieves heat dissipation for the AC output board 36 in the second accommodating chamber 3 by setting a second cooling fan 37, and achieves heat dissipation for the filter capacitor board 35, the control board 41 and the power board 43 by setting a third cooling fan 45, thereby achieving heat dissipation for the energy storage inverter through fewer cooling fans, improving the heat dissipation efficiency of the energy storage inverter, reducing the noise, energy consumption and cost of the energy storage inverter, and ensuring the stable operation of the energy storage inverter.

[0076] The energy storage inverter in the present application can be placed in an energy storage system. The energy storage inverter integrates a battery management unit 44. The battery management unit 44 can monitor the voltage, current, temperature and other parameters of the battery pack in the energy storage system in real time to ensure that the battery works in the best condition and extend the service life of the battery. The energy storage inverter also integrates a high-voltage box 31, which is responsible for the transmission and distribution of electrical energy and can ensure the high-voltage safety and stable operation of the system. Therefore, by integrating the battery management unit 44 and the high-voltage box 31 in the energy storage inverter, the overall performance and reliability of the energy storage system can be improved, the assembly and maintenance process of the energy storage system can be simplified, and the user's operation and maintenance costs can be reduced.

[0077] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An energy storage converter, characterized in that: The energy storage converter comprises: a housing (1), the housing (1) having a first accommodating chamber (2), a second accommodating chamber (3) and a third accommodating chamber (4) distributed along a first direction (X), the first accommodating chamber (2) being provided with an inductor (21), a heat sink (22) and a first cooling fan (23), the second accommodating chamber (3) being provided with a high-voltage box (31), a power device and a heat-generating electronic device; the third accommodating chamber (4) being provided with a control board (41), an anti-interference board (42) and a power board (43); A first partition plate (5) and a second partition plate (6) are provided between the first accommodating cavity (2) and the second accommodating cavity (3), and are spaced apart along a second direction (Y); the first partition plate (5) is capable of supporting the high-voltage box (31), and the second partition plate (6) is capable of supporting the heat-generating electronic device; along the second direction (Y), the power device is arranged between the first partition plate (5) and the second partition plate (6), and the second direction (Y) is perpendicular to the first direction (X); A first support plate (7) is provided between the second accommodating chamber (3) and the third accommodating chamber (4), and the first support plate (7) supports the control board (41), the anti-interference board (42) and the power board (43).

2. The energy storage converter according to claim 1, characterized in that: Along the second direction (Y), the inductor (21), the heat sink (22) and the first heat dissipation fan (23) are arranged in sequence and spaced apart; The first partition plate (5) is located above the first cooling fan (23), and the second partition plate (6) is located above the inductor (21).

3. The energy storage converter according to claim 2, characterized in that: The first accommodating cavity (2) is further provided with a support block (24); along the first direction (X), one end of the support block (24) contacts the radiator (22), and the other end contacts the bottom wall of the shell (1), so that a gap exists between the radiator (22) and the bottom wall of the shell (1).

4. The energy storage converter according to claim 2, characterized in that: The first partition plate (5) comprises: A first body (51), wherein the first body (51) is capable of supporting the high-voltage box (31); a first extension portion (52), the first extension portion (52) being arranged on a side of the first body (51) facing the second partition plate (6), and extending along the second direction (Y) to above the radiator (22) and connected to the radiator (22); A first fixing portion (53), the first fixing portion (53) is arranged on the outer periphery of the first body (51) and is connected to the shell (1), and the first fixing portion (53) extends along the first direction (X).

5. The energy storage converter according to claim 4, characterized in that: The second partition plate (6) comprises: a second body (61), wherein the second body (61) is capable of supporting the heat-generating electronic device; a second extension portion (62), the second extension portion (62) being arranged on a side of the second body (61) facing the first partition plate (5), and extending along the second direction (Y) to above the radiator (22) and connected to the radiator (22); A second fixing portion (63), the second fixing portion (63) is arranged on the outer periphery of the second body (61) and is connected to the shell (1), and the second fixing portion (63) extends along the first direction (X).

6. The energy storage converter according to claim 5, characterized in that: The power device comprises: a power board (32), the power board (32) being in contact with the heat sink (22), and two ends of the power board (32) being respectively connected to the first extension portion (52) and the second extension portion (62) along the second direction (Y).

7. The energy storage converter according to claim 6, characterized in that: The second body (61) is provided with a first connecting groove (61a); the heat-generating electronic device comprises: a busbar (34), the busbar (34) being rigidly connected to the inductor (21) via the first connecting groove (61a); The heat-generating electronic device further comprises: a filter capacitor plate (35) and an AC output plate (36), wherein the filter capacitor plate (35) and the AC output plate (36) are both rigidly connected to the busbar (34); Along a third direction (Z), the filter capacitor plate (35) and the AC output plate (36) are arranged in sequence on a side of the busbar (34) away from the second partition plate (6), and the third direction (Z) is perpendicular to the first direction and the second direction (Y).

8. The energy storage converter according to claim 7, characterized in that: The second accommodating chamber (3) is further provided with: a second cooling fan (37) and a wind collecting cover (38); the second cooling fan (37) is connected to the side wall of the housing (1); Along the second direction (Y), the second cooling fan (37) is located on a side of the filter capacitor plate (35) away from the power plate (32); along the first direction (X), the wind collecting cover (38) covers at least a portion of the filter capacitor plate (35) and at least a portion of the second cooling fan (37).

9. The energy storage converter according to claim 6, characterized in that: The power device further comprises an absorption capacitor plate (33) rigidly connected to the power board (32); along the first direction (X), the absorption capacitor plate (33) is located on a side of the power board (32) away from the heat sink (22); and the absorption capacitor plate (33) is connected to the high-voltage box (31) via a copper busbar.

10. The energy storage converter according to any one of claims 1 to 9, characterized in that: The first supporting plate (7) comprises: A third body (71), the third body (71) being capable of supporting the control board (41), the anti-interference board (42) and the power board (43); a third extension portion (72), the third extension portion (72) being arranged on a side of the third body (71) facing the high-voltage box (31), the third extension portion (72) extending along the first direction (X) towards the power device to shield at least a portion of the power device; a third fixing portion (73), the third fixing portion (73) being arranged on the outer periphery of the third body (71) and connected to the housing (1), the third fixing portion (73) extending in a direction away from the power device along the first direction (X); The third extension portion (72) is provided with a second connecting groove (72a), and the power device is rigidly connected to the high-voltage box (31) via the second connecting groove (72a).

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