Energy storage converter

Abstract

The utility model belongs to the field of energy storage converter equipment, and particularly relates to an energy storage converter. In order to solve the technical problem that an energy storage converter is easy to overheat, the utility model provides an energy storage converter. The energy storage converter comprises a power module, an electric reactor, a capacitor module, a busbar and at least two heat dissipation air channels, the heat dissipation air channels are provided with fans used for driving cooling air to flow in the heat dissipation air channels, and the busbar is used for being connected with an alternating current switch and conducting current. One, two or three of a power module, an electric reactor, a capacitor module and a busbar are arranged in each heat dissipation air duct, and the power module, the electric reactor, the capacitor module and the busbar are all arranged in the corresponding heat dissipation air duct. When the energy storage converter is used, cooling air can cool the power module, the electric reactor, the capacitor module and the busbar, so that the heat dissipation effect of the energy storage converter is improved, and the energy storage converter is prevented from being overheated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of energy storage converter, especially relates to an energy storage converter. BACKGROUND

[0002] The energy storage converter is a commonly used electrical equipment, and the heat of the multiple components in the energy storage converter is relatively serious. The prior art provides various heat dissipation modes of the energy storage converter.

[0003] The first kind: the Chinese utility model patent with the authorization announcement number CN210183237U and the authorization announcement date of 2020.03.24 discloses an energy storage converter. The energy storage converter includes two air ducts, each air duct is provided with a fan, a power unit module is installed in one of the air ducts, and a reactor is installed in the other air duct, so that the power unit module and the reactor are separately cooled, and overheating of the energy storage converter is avoided.

[0004] It should be specially noted that the AC component, the DC component and the control component are installed in the air duct where the reactor is located.

[0005] The second kind: the Chinese utility model patent with the authorization announcement number CN214850992U and the authorization announcement date of 2021.11.23 discloses an energy storage converter based on AC / DC separation. The energy storage converter includes a DC heat dissipation air duct and an AC heat dissipation air duct, and each air duct is provided with an independent fan. On the DC side, the corresponding fan drives cooling air to cool the power module, the DC circuit breaker and the capacitor. On the AC side, the corresponding fan drives cooling air to cool the AC contactor, the AC circuit breaker and the reactor.

[0006] The third kind: the Chinese utility model patent with the authorization announcement number CN222381510U and the authorization announcement date of 2025.01.21 discloses an energy storage converter cabinet. The energy storage converter cabinet includes a fan, a DC capacitor, a reactor and an IGBT (Insulated Gate Bipolar Transistor, which is a composite full-control voltage drive power semiconductor device composed of a bipolar transistor and an insulated gate field effect transistor) module. The fan is provided with a fan air duct, the DC capacitor is provided with a DC side air duct, the reactor is provided with a reactor air duct, and the IGBT module is provided with an IGBT module air duct. The fan air duct is connected with the DC side air duct, the reactor air duct and the IGBT module air duct, and the fan drives cooling air to flow through the fan air duct, the DC side air duct, the reactor air duct and the IGBT module air duct.

[0007] In the aforementioned patent documents, cooling air can dissipate heat from components such as power unit modules (i.e., power modules, including IGBT modules), reactors, circuit breakers, capacitor modules, and contactors, thereby reducing the temperature of the main heat-generating components of the energy storage converter. Furthermore, the patent documents indicate that there are at least two cooling air ducts. This is because the cooling air temperature rises after passing the upstream heat-generating components, resulting in poor cooling effect on downstream heat-generating components. With only one cooling air duct, the cooling effect on the downstream heat-generating components cannot meet the usage requirements, leading to overheating of the energy storage converter.

[0008] However, as the capacity of individual energy storage converters continues to increase, the current flowing through the busbars used to connect the two AC switches and conduct current is also constantly increasing, leading to a continuous increase in the heat generated by the busbars. This makes the busbars, besides the reactors, power modules, and capacitor modules, the main heat-generating components. Because existing energy storage converters do not provide cooling channels for the busbars, they are prone to overheating. Utility Model Content

[0009] The purpose of this invention is to provide an energy storage converter to solve the technical problem of overheating in existing energy storage converters.

[0010] To achieve the above objectives, the technical solution of the energy storage converter provided by this utility model is as follows:

[0011] An energy storage converter includes a power module, a reactor, a capacitor module, a busbar, and at least two heat dissipation ducts. The heat dissipation ducts are equipped with fans for driving cooling air to flow within them. The busbars are used to connect AC switches and conduct current. Each heat dissipation duct contains one, two, or three of the four components: the power module, the reactor, the capacitor module, and the busbar. The power module, the reactor, the capacitor module, and the busbar are all arranged within their respective heat dissipation ducts.

[0012] Furthermore, one of the heat dissipation ducts is defined as the first heat dissipation duct. A busbar is arranged in the first heat dissipation duct, and one of the following three components—a power module, a reactor, and a capacitor module—is arranged in the first heat dissipation duct.

[0013] Furthermore, power modules, reactors, or capacitor modules are positioned downstream of the busbar to allow cooling air to pass through the busbar first.

[0014] Further, the first heat dissipation air duct is divided into an upper part and a lower part located directly below the upper part, the lower part is divided into a middle part and two side parts located on both sides of the middle part, the bottom of the middle part is communicated with the two side parts, the top of the middle part is communicated with the upper part, the upper part of the two side parts is provided with a first air inlet, and the lower part of the upper part is provided with a first air outlet; the power module, the reactor or the capacitor module is located in the upper part, the bus bar is located in the middle part, and the transformer is located in the two side parts.

[0015] Further, the bus bar is located at the bottom of the middle part, and the upper part of the middle part is provided with a circuit breaker.

[0016] Further, the transformer is located at the upper part of the two side parts, and the non-energy storage capacitor is arranged in the lower part of the two side parts.

[0017] Further, the communication part of the middle part and the upper part and the communication part of the middle part and the two side parts are provided with a fan.

[0018] Further, the first air inlet is used for being communicated with the air outlet of the air conditioner, and the first air outlet is used for being communicated with the air inlet of the air conditioner.

[0019] Further, one of the heat dissipation air ducts is defined as a second heat dissipation air duct, the bus bar and the capacitor module are arranged in the first heat dissipation air duct, the power module and the reactor are arranged in the second heat dissipation air duct, the upper part of the second heat dissipation air duct is provided with a second air inlet, the second air inlet is provided with a filter structure, and the bottom of the second heat dissipation air duct is provided with a second air outlet.

[0020] Further, the top of the cabinet body of the energy storage converter is connected with an elbow with an internal flow channel, the internal flow channel of the elbow constitutes part of the second heat dissipation air duct, one end of the elbow is opposite to the ground, the other end is sealingly connected with the cabinet body, and the second air inlet is located at the end of the elbow opposite to the ground; the filter structure comprises a mounting frame and filter cotton mounted on the mounting frame, one end of the mounting frame is hingedly connected with the elbow, and the other end is detachably fixedly connected with the elbow.

[0021] The energy storage converter has the advantages that: the energy storage converter is an improved invention, and the main difference between the energy storage converter and the prior art is that the bus bar is also located in the heat dissipation air duct. In use, the cooling air can dissipate heat for the power module, the reactor, the capacitor module and the bus bar, so that the heat dissipation effect of the energy storage converter is improved, and the energy storage converter is prevented from overheating. Meanwhile, since the heat dissipation air ducts are at least two, and at most only three of the power module, the reactor, the capacitor module and the bus bar are arranged in a single heat dissipation air duct, the cooling effect of the cooling air on the heat generating element at the downstream end can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1It is the flow schematic view of cooling air in the first heat dissipation air duct of the energy storage converter of the utility model.

[0023] Figure 2 It is the flow schematic view of cooling air in the second heat dissipation air duct of the energy storage converter of the utility model.

[0024] Figure 3 It is the structure schematic view of the elbow of the energy storage converter of the utility model.

[0025] Figure 4 It is Figure 3 The structure schematic view of the filter structure.

[0026] Mark explanation:

[0027] 101, upper part, 102, middle part, 103, both sides, 104, first air outlet, 105, first air inlet, 2, second heat dissipation air duct, 201, second air inlet, 3, capacitor module, 4, fan, 5, transformer, 6, non-energy storage capacitor, 7, frame switch, 8, busbar, 9, elbow, 10, power module, 11, reactor, 12, bottom plate with air vent, 13, mounting frame, 131, C-shaped net plate, 132, flat plate with holes, 133, steel mesh, 14, filter cotton, 15, folding page, 16, bolt, 17, air conditioner. Specific implementation

[0028] To solve the problems in the background art, the core inventive concept of the utility model is that the busbar is arranged in the heat dissipation air duct, so that at least two heat dissipation air ducts are used to dissipate heat for the power module, the reactor, the capacitor module and the busbar.

[0029] The utility model will be further described in detail in combination with embodiments.

[0030] The specific embodiment of the energy storage converter provided by the utility model:

[0031] As shown in Figures 1-4 As a basic specific embodiment, the energy storage converter includes a power module 10, a reactor 11, a capacitor module 3, a busbar 8 and at least two heat dissipation air ducts, the heat dissipation air duct is provided with a fan 4 for driving cooling air to flow in the heat dissipation air duct, the busbar 8 is used for connecting an alternating current switch (specifically, the frame switch 7 in the figure, the frame switch 7 is used for connecting an external transformer) and conducting current, one, two or three of the four of the power module 10, the reactor 11, the capacitor module 3 and the busbar 8 are arranged in each heat dissipation air duct, and the power module 10, the reactor 11, the capacitor module 3 and the busbar 8 are all arranged in the corresponding heat dissipation air duct.

[0032] In Figures 1-4In the specific embodiment shown, the number of heat dissipation air ducts is two, and the first heat dissipation air duct and the second heat dissipation air duct 2 are respectively located in the first heat dissipation air duct, and the capacitor module 3 and the busbar 8 are located in the first heat dissipation air duct, and the reactor 11 and the power module 10 are located in the second heat dissipation air duct 2.

[0033] In other specific embodiments, the power module 10 can also be located in a separate heat dissipation air duct, and the capacitor module 3, the busbar 8 and the reactor 11 are located in another heat dissipation air duct.

[0034] When the number of heat dissipation air ducts is two, one, two or three of the capacitor module 3, the busbar 8, the power module 10 and the reactor 11 are located in one heat dissipation air duct, and the other three, two or one are located in another heat dissipation air duct, and various cases are not enumerated here.

[0035] When three of the capacitor module 3, the busbar 8, the power module 10 and the reactor 11 are located in the same heat dissipation air duct, in order to ensure that the heat generating module at the most downstream of the heat dissipation air duct will not overheat, it is necessary to increase the flow rate of the cooling air in the heat dissipation air duct, so that more cooling air passes through the heat dissipation air duct in unit time.

[0036] Preferably, two of the capacitor module 3, the busbar 8, the power module 10 and the reactor 11 are located in each air duct, so as to ensure that the temperature of the cooling air at the most downstream heat generating module in any air duct will not be too high.

[0037] In other specific embodiments, the number of heat dissipation air ducts can also be three, and two of the power module 10, the reactor 11, the capacitor module 3 and the busbar 8 are located in the same heat dissipation air duct, and the other two are located in the other two heat dissipation air ducts respectively.

[0038] In other specific embodiments, the number of heat dissipation air ducts can also be four, and the power module 10, the reactor 11, the capacitor module 3 and the busbar 8 are located in different heat dissipation air ducts.

[0039] It needs to be specially pointed out that the utility model does not involve the improvement of the structure of the fan 4, the power module 10, the reactor 11, the capacitor module 3 and the busbar 8, and does not involve the improvement of the installation mode of the fan 4, the power module 10, the reactor 11, the capacitor module 3 and the busbar 8, and the above-mentioned content is known to those skilled in the art, and can also be referred to the patent documents cited in the utility model, and will not be repeated here. In order to ensure the smoothness of the air duct, the cabinet of the energy storage converter is provided with a ventilation structure (hole or groove structure), and the cabinet is used for installing the above-mentioned components.

[0040] For the convenience of those skilled in the art to understand the utility model, the following is introduced with the capacitor module 3 and the busbar 8 located in the first heat dissipation air duct, and the number of heat dissipation air ducts is two, but in other specific embodiments, the capacitor module 3 can also be replaced by power module 10 or electric reactor 11, and the heat dissipation air duct can also be three or four.

[0041] In order to improve the overall heat dissipation performance of the energy storage converter cabinet, preferably, in Figure 1 The specific embodiment shown in the figure, the capacitor module 3 is arranged downstream of the busbar 8, for making the cooling wind first through the busbar 8. Among the power module 10, the electric reactor 11, the capacitor module 3 and the busbar 8, the heat generation of the busbar 8 is the smallest, so that the cooling wind first flows through the busbar 8, so that the temperature of the cooling wind reaching the capacitor module 3 is lower, and the heat dissipation effect of the busbar 8 and the capacitor module 3 is better.

[0042] In other specific embodiments, the capacitor module 3 can also be arranged downstream of the busbar 8, and the difference between this specific embodiment and Figure 1 The specific embodiment shown in the figure is that the first air inlet 105 in Figure 1 Is changed into an air outlet, and the first air outlet 104 in Figure 1 Is changed into an air inlet. At this time, the temperature of the cooling wind reaching the busbar 8 is higher, and the flow rate of the cooling wind must be improved to ensure that the busbar 8 can be fully cooled.

[0043] In the specific embodiment described in Figure 1 The first heat dissipation air duct is divided into an upper part 101 and a lower part located directly below the upper part 101, the lower part is divided into a middle part 102 and two side parts 103 located on both sides of the middle part 102, the bottom of the middle part 102 is communicated with the two side parts 103, the top of the middle part 102 is communicated with the upper part 101, the upper part of the two side parts 103 is provided with the first air inlet 105, and the lower part of the upper part 101 is provided with the first air outlet 104; The capacitor module 3 is located in the upper part 101, the busbar 8 is located in the middle part 102, and the transformer 5 is arranged in the two side parts 103.

[0044] The two side parts 103 are located on the left and right sides of the middle part 102, at this time, as Figure 1 The figure shows that, on the one hand, the transformer 5 is also included in the first heat dissipation air duct, so that the cooling wind in the first heat dissipation air duct can cool the transformer 5; on the other hand, the left and right sides of the capacitor module 3 have a larger buffer space.

[0045] In actual use, the movement path of the cooling air is as follows: from the first air inlet 105 into the two side portions 103 of the first heat dissipation air duct → flow through the transformer 5 and cool the transformer 5 → into the middle portion 102, at the same time, flow through the busbar 8 and cool the busbar 8 → into the upper portion 101, at the same time, flow through the capacitor module 3 from bottom to top and cool the capacitor module 3 → hit the cabinet and flow to the left and right sides → flow to the buffer space (mainly the left and right sides) on the side of the capacitor module 3 and further exchange heat with the capacitor module 3 in the buffer space → flow out from the first air outlet 104.

[0046] Preferably, the busbar 8 is located at the bottom of the middle portion 102, and the upper portion of the middle portion 102 is provided with a circuit breaker, so that the cooling air in the first heat dissipation air duct can cool the circuit breaker, which is preferably the frame switch 7; preferably, the transformer 5 is located at the upper portion of the two side portions 103, and the lower portion of the two side portions 103 is provided with a non-energy storage capacitor 6, so that the cooling air in the first heat dissipation air duct can cool the non-energy storage capacitor 6, and the main difference between the non-energy storage capacitor 6 and the capacitor module 3 is that the capacitor module 3 is mainly used for energy storage and balancing the power grid load, while the non-energy storage capacitor 6 is mainly used for the normal operation of the circuit structure of the energy storage converter.

[0047] In other specific embodiments, the first heat dissipation air duct does not include the two side portions 103, or the busbar 8 is arranged in the middle of the middle portion 102. At this time, the transformer 5, the circuit breaker and the non-energy storage capacitor 6 are not forcibly air-cooled (i.e. the above-mentioned elements are not located in the first heat dissipation air duct), and since the above-mentioned elements are not the main heat generating elements, the higher temperature of the above-mentioned elements only affects the performance of the energy storage converter, but does not cause the energy storage converter to overheat (i.e. the energy storage converter cannot work normally).

[0048] In order to improve the flow rate of the cooling air in the first heat dissipation air duct, the first heat dissipation air duct is provided with a plurality of air inlets and outlets, and the air inlets and outlets are arranged in the following manner: Figure 1 In the specific embodiment shown in the drawings, the communication between the middle portion 102 and the upper portion 101 and the communication between the middle portion 102 and the two side portions 103 are both provided with the fan 4, which is preferably an axial fan. At this time, the cooling air accelerated by the fan 4 at the communication between the middle portion 102 and the upper portion 101 immediately flows through the capacitor module 3, and the cooling air accelerated by the fan 4 at the communication between the middle portion 102 and the two side portions 103 immediately flows through the busbar 8, so as to improve the wind speed of the cooling air at the busbar 8 and the capacitor module 3 and improve the cooling effect.

[0049] However, in other specific embodiments, the fan 4 can be arranged only at the communication between the middle portion 102 and the upper portion 101 or at the communication between the middle portion 102 and the two side portions 103, or the fan 4 can be arranged at the first air inlet 105 or the first air outlet 104.

[0050] To further improve the cooling effect on the busbar 8 and the capacitor module 3, preferably, in Figure 1 In the specific embodiment shown, the first air inlet 105 is used to communicate with the air outlet of the air conditioner 17, and the first air outlet 104 is used to communicate with the air inlet of the air conditioner 17. Among them, the air conditioner 17 is installed on the cabinet body.

[0051] The utility model does not involve the improvement of air conditioner 17 structure and the improvement of air conditioner 17 installation mode, and the above content is the conventional technical means in the field, for example, the Chinese utility model patent with the authorization announcement number CN209170053U discloses the air conditioner 17 arranged on the cabinet body, which will not be repeated here.

[0052] Compared with the technical scheme of providing cooling air by using ambient air, the air conditioner 17 can provide cooling air with lower temperature, thereby improving the cooling effect of the cooling air on the busbar 8 and the capacitor module 3.

[0053] Of course, in other specific embodiments, the first air inlet 105 and the first air outlet 104 can also be directly communicated with the external atmosphere, and a filtering structure is arranged at the first air inlet 105 and the first air outlet 104 to avoid foreign matters entering the first heat dissipation air duct.

[0054] Among them, the filtering structure arranged at the air inlet and the air outlet is the conventional technical means in the field, for example, the Chinese utility model patent with the authorization announcement number CN217934734U discloses the filtering structure arranged at the air inlet and the air outlet, which will not be repeated here.

[0055] In the specific embodiment shown, Figures 1-2 In the specific embodiment shown, the power module 10 and the reactor 11 are arranged in the second heat dissipation air duct 2, the fan 4 is arranged above the power module 10, the reactor 11 is below the power module 10, and the fan 4 is preferably a centrifugal fan.

[0056] In one specific embodiment, the bottom of the second heat dissipation air duct 2 is provided with a second air inlet 201, and the upper part of the second heat dissipation air duct 2 is provided with a second air outlet, and the filtering structure is installed at the second air inlet 201 and the second air outlet.

[0057] At this time, since the air is inhaled from the bottom of the second heat dissipation air duct 2, the dust on the ground is easily sucked up and reaches the filtering structure at the second air inlet 201, causing the filtering structure at the second air inlet 201 to need to be replaced frequently.

[0058] Preferably, in Figure 2In the specific embodiment shown, the upper portion of the second heat dissipation air duct 2 is provided with a second air inlet 201, and the bottom portion of the second heat dissipation air duct 2 is provided with a second air outlet, thereby reducing the frequency of replacement of the filtering structure. The second air outlet is provided with a bottom plate 12 with ventilation mesh holes, which constitutes the filtering structure for preventing foreign matter such as stones or small animals from entering the second heat dissipation air duct 2 from the second air outlet.

[0059] The specific principle can refer to the Chinese Utility Model Patent with the publication number CN219146034U, which discloses a top air inlet and bottom air outlet energy storage converter heat dissipation structure, which will not be described here. Meanwhile, the heat dissipation structure does not include Figure 2 the elbow 9 shown in the specific embodiment.

[0060] To better prevent dust and rainwater from entering the second heat dissipation air duct 2, preferably, the second heat dissipation air duct 2 is provided with a filtering structure. Figure 2 In the specific embodiment shown, the top of the cabinet of the energy storage converter is connected with an elbow 9 with an internal flow channel, the internal flow channel of the elbow 9 constitutes part of the second heat dissipation air duct 2, one end of the elbow 9 is opposite to the ground, the other end is sealingly connected with the cabinet, and the second air inlet 201 is located at the end of the elbow 9 opposite to the ground, thereby preventing rainwater and dust from entering the second heat dissipation air duct 2. Preferably, a waterproof cap is further provided on the cabinet to improve the waterproof capability.

[0061] The structure of the elbow 9 and the connection mode with the cabinet can refer to the Chinese Utility Model Patent with the publication number CN217934734U, and it needs to be specially pointed out that in the utility model patent, the end of the elbow 9 opposite to the ground is provided with an air outlet, the bottom of the air duct is provided with an air inlet, and the top is provided with an air outlet; while in the present utility model, the second air inlet 201 is located at the end of the elbow 9 opposite to the ground, the top of the second heat dissipation air duct 2 is provided with an air inlet, and the bottom is provided with an air outlet.

[0062] Preferably, the filtering structure includes a mounting frame 13 and filter cotton 14 mounted on the mounting frame 13. Figures 2-4 In the specific embodiment shown, the filtering structure includes a mounting frame 13 and filter cotton 14 mounted on the mounting frame 13, one end of the mounting frame 13 is hingedly connected with the elbow 9, and the other end is detachably fixedly connected with the elbow 9. The mounting frame 13 is welded by a C-shaped mesh plate 131, a flat plate 132 with holes, and a steel mesh 133, the filter cotton 14 is clamped between the C-shaped mesh plate 131 and the steel mesh 133 (the flat plate 132 with holes), and the apertures of the C-shaped mesh plate 131, the flat plate 132 with holes, and the steel mesh 133 are relatively large, thereby blocking larger foreign matter (such as stones, small animals, and the like), and the filter cotton 14 is mainly used for filtering smaller foreign matter such as dust.

[0063] Preferably, as Figure 3As shown, one end of the mounting frame 13 is hinged to the elbow 9 through a hinge 15, and the other end is provided with a bolt hole, and the elbow 9 is provided with a threaded hole, and the bolt 16 is connected with the threaded hole after passing through the bolt hole, so as to realize the fixed connection of the mounting frame 13 and the elbow 9. When the filter cotton 14 needs to be replaced, the bolt 16 can be directly removed, then the mounting frame 13 is rotated to make the mounting frame 13 rotate out of the elbow 9, then the filter cotton 14 is replaced from the side of the mounting frame 13, and finally the mounting frame 13 is reversely rotated and the bolt 16 is installed, so that the filter cotton 14 is replaced conveniently.

[0064] In other specific embodiments, referring to the Chinese utility model with the authorization announcement number CN217934734U, the filter structure in the elbow 9 is a sand prevention window, and the sand prevention window is designed to be detachable, which will not be described here.

[0065] In other specific embodiments, referring to the Chinese invention patent application with the application publication number CN105208834A, a circumferential frame can be welded on the elbow 9, one end of the filter screen pressing frame is hinged to the circumferential frame through a hinge 15, the other end is connected to the circumferential frame through a bolt 16, and the filter screen (such as the filter cotton 14) is pressed between the filter screen pressing frame and the circumferential frame. When replacing the filter screen, first, the bolt 16 is removed and the filter screen pressing frame is rotated, then the filter screen is replaced, and then the filter screen pressing frame is reversely rotated and the bolt 16 is installed.

[0066] Finally, it should be noted that the above is only the preferred embodiment of the present utility model, and is not used to limit the present utility model, although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments without creative labor, or replace some technical features with equivalents, or organically combine different specific embodiments, so as to combine the specific embodiments given in the Figures 1-4 of course, those skilled in the art can also combine the specific embodiments not given in the drawings of the remaining specification. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An energy storage converter comprising a power module, a reactor, a capacitor module, a busbar and at least two cooling air ducts, the cooling air ducts being configured with a fan for driving a cooling air flow within the cooling air ducts, the busbar being for connecting an AC switch and conducting a current, characterized in that, The power module, the electric reactor, the capacitor module and the busbar are arranged in one, two or three of the four in each heat dissipation air duct, and the power module, the electric reactor, the capacitor module and the busbar are arranged in the corresponding heat dissipation air duct.

2. The energy storage inverter of claim 1, wherein, One of the heat dissipation air ducts is defined as a first heat dissipation air duct, the busbar is arranged in the first heat dissipation air duct, and one of the power module, the electric reactor and the capacitor module is arranged in the first heat dissipation air duct.

3. The energy storage inverter of claim 2, wherein, The power module, the electric reactor or the capacitor module is arranged downstream of the busbar for the cooling air to pass through the busbar first.

4. The energy storage inverter of claim 3, wherein, The first heat dissipation air duct is divided into an upper part and a lower part located directly below the upper part, the lower part is divided into a middle part and two side parts located on both sides of the middle part, the bottom of the middle part is communicated with the two side parts, the top of the middle part is communicated with the upper part, the upper part of the two side parts is provided with a first air inlet, and the lower part of the upper part is provided with a first air outlet; the power module, the electric reactor or the capacitor module is located in the upper part, the busbar is located in the middle part, and the transformer is arranged in the two side parts.

5. The energy storage inverter of claim 4, wherein, The busbar is located at the bottom of the middle part, and the upper part of the middle part is provided with a circuit breaker.

6. The energy storage inverter of claim 4, wherein, The transformer is located at the upper part of the two side parts, and the non-energy storage capacitor is arranged in the lower part of the two side parts.

7. The energy storage inverter of claim 4, wherein, The communication part of the middle part and the upper part and the communication part of the middle part and the two side parts are provided with a fan.

8. An energy storage converter according to any one of claims 4 to 7, wherein, The first air inlet is used to communicate with the air outlet of the air conditioner, and the first air outlet is used to communicate with the air inlet of the air conditioner.

9. The energy storage converter of any one of claims 2-7, wherein, One of the heat dissipation air ducts is defined as a second heat dissipation air duct, the busbar and the capacitor module are arranged in the first heat dissipation air duct, the power module and the electric reactor are arranged in the second heat dissipation air duct, the upper part of the second heat dissipation air duct is provided with a second air inlet, the second air inlet is provided with a filter structure, and the bottom of the second heat dissipation air duct is provided with a second air outlet.

10. The energy storage converter of claim 9, wherein, The top of the cabinet of the energy storage converter is connected with an elbow with an internal flow channel, the internal flow channel of the elbow constitutes part of the second heat dissipation air duct, one end of the elbow is opposite to the ground, the other end is sealingly connected with the cabinet, and the second air inlet is located at the end of the elbow opposite to the ground; the filter structure comprises a mounting frame and filter cotton mounted on the mounting frame, one end of the mounting frame is hingedly connected with the elbow, and the other end is detachably fixedly connected with the elbow. The top of the cabinet of the energy storage converter is connected with an elbow with an internal flow channel, the internal flow channel of the elbow constitutes part of the second heat dissipation air duct, one end of the elbow is opposite to the ground, the other end is sealingly connected with the cabinet, and the second air inlet is located at the end of the elbow opposite to the ground; the filter structure comprises a mounting frame and filter cotton mounted on the mounting frame, one end of the mounting frame is hingedly connected with the elbow, and the other end is detachably fixedly connected with the elbow.

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