Power conversion system

Abstract

The invention provides a power conversion system. The power conversion system comprises a plurality of power converters and two partition plates. Wherein the plurality of power converters comprise a first-layer power converter and a second-layer power converter which are stacked in the first direction and arranged at intervals, and the first-layer power converter is closer to the ground than the second-layer power converter. The first-layer power converter comprises a first column and a second column of power converters which are oppositely arranged at intervals in the second direction, and the second-layer power converter comprises a third column and a fourth column of power converters which are oppositely arranged at intervals in the second direction. And each column of power converters comprises at least two power converters which are arranged at intervals along a third direction. The power converter comprises an air inlet and an air outlet, and the air inlet is closer to the ground than the air outlet. One of the two partition plates is located between the first column of power converters and the third column of power converters, the other partition plate is located between the second column of power converters and the fourth column of power converters, and one partition plate and the other partition plate are symmetrically arranged.

Description

Technical Field

[0001] This application relates to the field of new energy power generation, and in particular to a power conversion system. Background Technology

[0002] Power converters (such as energy storage converters or photovoltaic inverters) are one of the core components of photovoltaic power generation systems. They are used to convert direct current (DC) from photovoltaic modules or energy storage batteries into alternating current (AC) and then transmit the AC power to the grid or load. In recent years, with the rapid development of the photovoltaic power generation industry, on the one hand, the requirements for the capacity and power density of power converters have gradually increased; on the other hand, the integrated layout of multiple power converters has become an industry trend. Based on this, when multiple power converters are integrated, how to rationally design the layout and heat dissipation structure of the power converters to improve the system's heat dissipation capacity and thus improve the power conversion efficiency of the power converters has become a problem that the industry urgently needs to solve. Summary of the Invention

[0003] To address the aforementioned technical issues, this application provides a power conversion system that can integrate multiple power converters while ensuring high heat dissipation capacity and improving the power conversion efficiency of the power conversion system.

[0004] In a first aspect, this application provides a power conversion system, including multiple power converters and two partitions. The multiple power converters convert direct current (DC) from photovoltaic modules or energy storage batteries into alternating current (AC) and transmit the AC to the power grid. The multiple power converters include at least two layers of power converters stacked and spaced apart along a first direction. Each of the at least two layers includes at least two rows of power converters arranged opposite each other and spaced apart along a second direction. Each of the at least two rows includes at least two power converters arranged spaced apart along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other. The power converters also include air inlets and outlets. Air from outside the power converter enters the power converter through the air inlet and exits through the air outlet. Along the first direction, the air inlet is closer to the ground than the air outlet. The system comprises at least two layers of power converters, including an adjacent first layer and a second layer. Along a first direction, the first layer is closer to the ground than the second layer. The first layer includes a first column and a second column of power converters, while the second layer includes a third column and a fourth column. Along the first direction, the first and third columns are stacked and spaced apart, as are the second and fourth columns. One partition is located between the air outlet of the power converter in the first column and the air inlet of the power converter in the third column. The other partition is located between the air outlet of the power converter in the second column and the air inlet of the power converter in the fourth column. Both partitions extend along a second and a third direction, and are symmetrically arranged.

[0005] It's worth noting that during normal operation, the power converter generates a significant amount of heat from its internal power modules and inverter inductors. To better dissipate this heat, heat sinks are necessary for these components. These heat sinks typically have multiple fins to dissipate heat into the atmosphere. To further enhance cooling efficiency, a fan is usually installed between the power converter's air inlet and outlet. This allows cooler air from the atmosphere to be blown towards the heat sink, carrying away its heat, while the warmer air is then exhausted back into the atmosphere through the outlet. Since hot air is less dense than cold air, it naturally moves in the opposite direction to gravity. Therefore, placing the air inlet closer to the ground than the outlet allows for better heat dissipation for the power converter.

[0006] Furthermore, because one baffle is located between the air outlet of the power converter in the first row and the air inlet of the power converter in the third row, the hot air blown out by the power converter in the first row will not be directly drawn into the air inlet of the power converter in the third row, thus ensuring the cooling efficiency of the power converter in the third row. Similarly, because another baffle is located between the air outlet of the power converter in the second row and the air inlet of the power converter in the fourth row, the hot air blown out by the power converter in the second row will not be directly drawn into the air inlet of the power converter in the fourth row, thus ensuring the cooling efficiency of the power converter in the fourth row. Furthermore, because one baffle is symmetrically arranged with the other, the hot air blown out by the power converter in the first row will not be directly drawn into the air inlet of the power converter in the fourth row, and the hot air blown out by the power converter in the second row will not be directly drawn into the air inlet of the power converter in the third row, thus ensuring the cooling efficiency of the power converter in the fourth row.

[0007] In one possible implementation, the projection of the first column of power converters along the first direction lies within the outline of the projection of a partition, and the projection of the second column of power converters along the first direction lies within the outline of the projection of another partition.

[0008] This configuration minimizes the risk of hot air from the power converter's outlet in the first-layer power converter bypassing the edge of the partition and being drawn into the power converter's inlet in the second-layer power converter, thus improving the heat dissipation efficiency of the power conversion system.

[0009] In one possible implementation, both the partition and the partition are inclined toward the first direction.

[0010] With this configuration, air from the atmosphere is more easily drawn into the air inlet of the power converter in the second-layer power converter.

[0011] In one possible implementation, as the distance between one partition and the second or fourth column of power converters along the second direction decreases, the distance between one partition and the third column of power converters along the first direction gradually decreases. Similarly, as the distance between another partition and the first or third column of power converters along the second direction decreases, the distance between another partition and the fourth column of power converters along the first direction gradually decreases. In other words, the two partitions symmetrically form a figure-eight shape.

[0012] Based on this, on the one hand, air from outside the power conversion system enters the power converter through the air inlets of the first and second power converters and is then discharged through the air outlets. Due to the presence of the inclined baffles, the discharged air can be more easily guided by the baffles. Subsequently, the air discharged from the first and second power converters converges in the passage between the third and fourth power converters, instead of being directly drawn into the air inlet of the second-layer power converter. On the other hand, due to the presence of the inclined baffles, the second-layer power converter can more easily draw in cooler air from outside the power conversion system, avoiding the intake of hotter air discharged from the first-layer power converter, thereby preventing hot air cascading in the power conversion system and improving the heat dissipation efficiency of the power conversion system.

[0013] In one possible implementation, as the distance between one partition and the second or fourth column of power converters along the second direction decreases, the distance between one partition and the third column of power converters along the first direction gradually increases; conversely, as the distance between another partition and the first or third column of power converters along the second direction decreases, the distance between another partition and the fourth column of power converters along the first direction gradually increases. In other words, the two partitions symmetrically form an inverted "V" shape.

[0014] Based on this, on the one hand, air from outside the power conversion system enters the power converter through the air inlet of the first-layer power converter and is then discharged through the air outlet. Due to the presence of the inclined baffle, the discharged air can be more easily guided to the outside of the power conversion system by the baffle, instead of being directly drawn into the air inlet of the second-layer power converter. On the other hand, due to the presence of the inclined baffle, cooler air from outside the power conversion system enters the power conversion system through the passage between the first and second rows of power converters. Subsequently, the cooler air in the passage is more easily drawn into the air inlets of the third and fourth rows of power converters, respectively, thereby avoiding hot air cascading in the power conversion system and improving the heat dissipation efficiency of the power conversion system.

[0015] In one possible implementation, the air outlet includes a left air outlet and a right air outlet disposed opposite each other along a second direction. The power conversion system also includes two first baffles extending towards the ground along a first direction. Along the second direction, one of the two first baffles is fixed to one end of a partition, and the other of the two first baffles along the second direction is fixed to one end of another partition. Along the second direction, the first baffles are disposed opposite to the left or right air outlet, and the first baffles are used to block the left or right air outlet.

[0016] This configuration minimizes the risk of hot air from the left or right exhaust vents of the power converter in the first-layer power converter bypassing the edge of the partition and being drawn into the air inlet of the power converter in the second-layer power converter, thus improving the heat dissipation efficiency of the power conversion system.

[0017] In one possible implementation, along a first direction, the end of a first baffle near the ground is closer to the ground than the left air outlet of any power converter in the first row of power converters, and the first baffle is used to block the left air outlet of the first row of power converters. The end of another first baffle near the ground is closer to the ground than the right air outlet of any power converter in the second row of power converters, and the other first baffle is used to block the right air outlet of the second row of power converters.

[0018] In other words, the projection of the left air outlet of any power converter in the first row along the second direction lies within the outline of a first baffle, and the projection of the right air outlet of any power converter in the second row along the second direction lies within the outline of another first baffle. This arrangement better prevents hot air blown from the first row of power converters from bypassing one first baffle and being drawn into the air inlet of the power converter in the third row, and better prevents hot air blown from the second row of power converters from bypassing another first baffle and being drawn into the air inlet of the power converter in the fourth row, thus improving the heat dissipation efficiency of the power conversion system.

[0019] In one possible implementation, along a first direction, the end of a first baffle near the ground is closer to the ground than the right air outlet of any power converter in the first row of power converters, and the first baffle is used to block the right air outlet of the first row of power converters. The end of another first baffle near the ground is closer to the ground than the left air outlet of any power converter in the second row of power converters, and the other first baffle is used to block the left air outlet of the second row of power converters.

[0020] In other words, the projection of the right air outlet of any power converter in the first row along the second direction lies within the outline of a first baffle, and the projection of the left air outlet of any power converter in the second row along the second direction lies within the outline of another first baffle. This arrangement better prevents hot air blown from the first row of power converters from bypassing one first baffle and being drawn into the air inlet of the power converter in the second row, and better prevents hot air blown from the second row of power converters from bypassing another first baffle and being drawn into the air inlet of the power converter in the fourth row, thus improving the heat dissipation efficiency of the power conversion system.

[0021] In one possible implementation, the power conversion system further includes two second baffles, both of which extend away from the ground along a first direction. Along the second direction, one of the two second baffles is fixed to the other end of a partition, and the other of the two second baffles along the second direction is fixed to the other end of another partition. One second baffle is used to block the air inlet of any power converter in the third row of power converters, and the other second baffle is used to block the air inlet of any power converter in the fourth row of power converters.

[0022] When there is strong air convection along the second direction outside the power conversion system, by setting the second baffle, the hot air discharged from the first and second power converters can be blown into the air inlet of the power converter in the third or fourth power converter, thereby improving the heat dissipation efficiency of the power conversion system.

[0023] In one possible implementation, along the first direction, the end of one second baffle that is farther from the ground is farther from the ground than the air inlet of any of the power converters in the third row of power converters, and the end of another second baffle that is farther from the ground is farther from the ground than the air inlet of any of the power converters in the fourth row of power converters.

[0024] In other words, along the second direction, one second baffle blocks the air inlet of any power converter in the third row of power converters, and another second baffle blocks the air inlet of the fourth row of power converters. This arrangement better prevents hot air from bypassing one second baffle and being drawn into the air inlet of the third row of power converters, and also better prevents hot air from bypassing the other second baffle and being drawn into the air inlet of the fourth row of power converters.

[0025] In one possible implementation, the air outlet includes at least one front air outlet and a rear air outlet, the airflow from which the front and rear air outlets blow air extends along a third direction, and when both the front and rear air outlets are present, the front and rear air outlets are arranged opposite each other along the third direction. The power conversion system also includes one or more third baffles connected between two adjacent power converters in any of the following columns of power converters: a first column, a second column, a third column, or a fourth column. Along the first direction, the third baffle connected between two adjacent power converters in the first column is closer to the ground than the front or rear air outlet of the two power converters connected to the third baffle; the third baffle connected between two adjacent power converters in the second column is closer to the ground than the front or rear air outlet of the two power converters connected to the third baffle; the third baffle connected between two adjacent power converters in the third column is closer to the ground than the front or rear air outlet of the two power converters connected to the third baffle; and the third baffle connected between two adjacent power converters in the fourth column is closer to the ground than the front or rear air outlet of the two power converters connected to the third baffle.

[0026] With this configuration, when there is strong convection in the first direction, it can prevent the strong convection from drawing in the hot air discharged from the outlet of any power converter in a row of power converters into the air inlet of that power converter or the air inlet of an adjacent power converter, thereby improving the heat dissipation efficiency of the power conversion system.

[0027] In one possible implementation, along the second direction, the edge of the third baffle located between two adjacent power converters extends beyond the edges of the two adjacent power converters.

[0028] This configuration minimizes the risk of hot air being drawn into the air inlets of adjacent power converters by bypassing the edge of the third baffle between them, thus improving the heat dissipation efficiency of the power conversion system.

[0029] In one possible implementation, along the second direction, the edge of the third baffle located between two adjacent power converters is flush with the edges of the two adjacent power converters.

[0030] This configuration minimizes the risk of hot air being drawn into the air inlets of adjacent power converters by bypassing the edge of the third baffle between them, thus improving the heat dissipation efficiency of the power conversion system.

[0031] In one possible implementation, the power conversion system further includes one or more fourth baffles extending along a first direction and a third direction, and disposed in the interval region between the first row of power converters and the second row of power converters. Along the first direction, the end of the fourth baffle furthest from the ground is further from the ground than the air inlet of at least one row of power converters in the first layer, and the end of the fourth baffle closest to the ground is closer to the ground than the air inlet of at least one row of power converters in the first layer, wherein the first layer of power converters is the layer of power converters closest to the ground in the power conversion system.

[0032] When there is strong convection in the second direction, by setting a fourth baffle, the strong convection can be blocked from flowing rapidly between the bottoms of the first and second power converters, thereby increasing the air intake of the first and second power converters and improving the heat dissipation efficiency of the power conversion system.

[0033] In one possible implementation, when the power conversion system includes two fourth baffles, one of the fourth baffles is disposed opposite to the other fourth baffle along a second direction. Along the second direction, the distance between one fourth baffle and the first column of power converters is smaller than the distance between the other fourth baffle and the first column of power converters, and the distance between the other fourth baffle and the second column of power converters is smaller than the distance between one fourth baffle and the second column of power converters.

[0034] This configuration effectively blocks the wind between the first row of power converters and the ground, and similarly, it also blocks the wind between the second row of power converters and the ground, thereby increasing the air intake of both the first and second rows of power converters.

[0035] In one possible implementation, the power conversion system further includes one or more fourth baffles extending along a first direction and a second direction. Along a third direction, the fourth baffles are disposed outside at least one row of power converters in the first layer of power converters. Along the first direction, the end of the fourth baffle furthest from the ground is further from the ground than the air inlet of at least one row of power converters in the first layer, and the end of the fourth baffle closest to the ground is closer to the ground than the air inlet of at least one row of power converters in the first layer, wherein the first layer of power converters is the layer of power converters closest to the ground in the power conversion system.

[0036] When there is strong convection in the external direction along a third direction, by setting a fourth baffle, the rapid flow of strong convection at the bottom of the first or second row of power converters can be blocked, thereby increasing the air intake of the first or second row of power converters and improving the heat dissipation efficiency of the power conversion system.

[0037] In one possible implementation, the power conversion system further includes one or more fifth baffles connected to either the first column of power converters or between two adjacent power converters in any of the second column of power converters. Along a first direction, the fifth baffle connected between two adjacent power converters in the first column is further from the ground than the air inlet of the power converter connected to it, and the fifth baffle connected between two adjacent power converters in the second column is closer to the ground than the air inlet of the power converter connected to it.

[0038] When there is strong convection in the first direction, by setting the fifth baffle, the hot air discharged from the outlet of the power converter in the first row of power converters can be prevented from being drawn into the inlet of the same power converter. Similarly, the hot air discharged from the outlet of the power converter in the second row of power converters can also be prevented from being drawn into the inlet of the same power converter, thereby improving the heat dissipation efficiency of the power conversion system.

[0039] In one possible implementation, along the second direction, the edge of the fifth baffle located between two adjacent power converters extends beyond the edges of the two adjacent power converters.

[0040] This configuration minimizes the risk of hot air being drawn into the air inlets of adjacent power converters by bypassing the edge of the fifth baffle between them, thus improving the heat dissipation efficiency of the power conversion system.

[0041] In one possible implementation, along the second direction, the edge of the fifth baffle located between two adjacent power converters is flush with the edges of the two adjacent power converters.

[0042] This configuration minimizes the risk of hot air being drawn into the air inlets of adjacent power converters by bypassing the edge of the fifth baffle between them, thus improving the heat dissipation efficiency of the power conversion system.

[0043] In one possible implementation, the power conversion system further includes one or more sixth baffles extending along a first direction and abutting against a partition. The sixth baffles along a third direction are located outside a plurality of power converters, and the projections of the plurality of power converters along the third direction are within the outline of the sixth baffles.

[0044] By setting a sixth baffle, the hot air discharged from the power converters arranged along the third direction in the first row of power converters can be prevented from bypassing the edge of the partition between the first and third rows of power converters and being drawn into the air inlet of the power converter in the third row that is positioned opposite to it along the first direction. Similarly, the hot air discharged from the power converters arranged along the third direction in the second row of power converters can also be prevented from bypassing the edge of the partition between the second and fourth rows of power converters and being drawn into the air inlet of the power converter in the fourth row that is positioned opposite to it along the first direction, thus improving the heat dissipation efficiency of the power conversion system.

[0045] In one possible implementation, the power conversion system further includes one or more seventh baffles, which are frame-shaped and extend along a first direction. The seventh baffles are fitted around the periphery of any column of power converters in the layer of at least two power converters that is furthest from the ground. Along the first direction, the end of the seventh baffle that is closer to the ground is closer to the ground than the air outlet of any power converter in the column of power converters fitted by the seventh baffle, and the end of the seventh baffle that is furthest from the ground is furthest from the ground than the air outlet of any power converter in the column of power converters fitted by the seventh baffle.

[0046] When there is strong convection in the second or third direction, the seventh baffle can block the strong convection as much as possible, thus allowing the top power converter to expel hot air smoothly and improving the heat dissipation efficiency of the power conversion system.

[0047] In summary, the power conversion system provided in this application avoids hot air cascading between upper and lower power converters by setting up partitions and various baffles. This ensures that the air drawn into the air inlet of each power converter is relatively cool, while minimizing the mixing of hot air discharged from the power converter, thereby improving the heat dissipation efficiency of the power conversion system. Attached Figure Description

[0048] Figure 1 A perspective view of the power conversion system in Embodiment 1 provided in this application;

[0049] Figure 2 This is a front view of the power conversion system in Embodiment 1 provided in this application;

[0050] Figure 3A One of the perspective views of a power converter in a power conversion system provided in any embodiment of this application;

[0051] Figure 3B A second perspective view of a power converter in a power conversion system provided in any embodiment of this application;

[0052] Figure 4 A perspective view of the power conversion system in Embodiment 2 provided in this application;

[0053] Figure 5 This is a front view of the power conversion system in Embodiment 2 provided in this application;

[0054] Figure 6 A perspective view of the power conversion system in Embodiment 3 provided in this application;

[0055] Figure 7 This is a front view of the power conversion system in Embodiment 3 provided in this application;

[0056] Figure 8 A perspective view of the power conversion system in Embodiment 4 provided in this application;

[0057] Figure 9 This is a front view of the power conversion system in Embodiment 4 provided in this application;

[0058] Figure 10 A perspective view of the power conversion system in Embodiment 5 provided in this application;

[0059] Figure 11 This is a front view of the power conversion system in Embodiment 5 provided in this application;

[0060] Figure 12 A perspective view of the power conversion system in Embodiment Six provided in this application;

[0061] Figure 13 This is a front view of the power conversion system in Embodiment Six provided in this application;

[0062] Figure 14 A perspective view of the power conversion system in Embodiment 7 provided in this application;

[0063] Figure 15 This is a front view of the power conversion system in Embodiment 7 provided in this application;

[0064] Figure 16 A perspective view of the power conversion system in Embodiment 8 provided in this application;

[0065] Figure 17 A perspective view of the power conversion system in Embodiment 9 provided in this application;

[0066] Figure 18 This is a front view of the power conversion system in Embodiment 9 provided in this application;

[0067] Figure 19 A perspective view of the power conversion system in Embodiment 10 provided in this application;

[0068] Figure 20 This is a front view of the power conversion system in Embodiment 10 provided in this application. Detailed Implementation

[0069] Power converters, such as photovoltaic inverters or power conversion systems (PCS), are the core equipment in photovoltaic or energy storage power plants that realize power conversion functions. Photovoltaic inverters convert direct current (DC) from photovoltaic modules into alternating current (AC) and transmit the AC power to the grid, while PCS converts DC from energy storage batteries into AC and transmits the AC power to the grid. In addition, PCS can also convert AC from the grid into DC and charge the energy storage batteries.

[0070] In recent years, in order to shorten the construction cycle of new energy power plants and simplify the installation of related equipment, the centralized arrangement of multiple power converters has gradually become an industry trend. However, with the increase in the theoretical power density and capacity of power converters, a large amount of heat is generated during the operation of power converters. When multiple power converters are arranged together, how to reasonably arrange the power converters and avoid the cascading of hot air between power converters has become a key factor restricting the improvement of power conversion efficiency.

[0071] Based on this, this application provides several power conversion systems with high heat dissipation efficiency, which can ensure the heat dissipation capacity of the power conversion system while allowing for the centralized layout of multiple power converters. The following will specifically combine... Figures 1-20 The power conversion system provided in the embodiments of this application will be described.

[0072] Example 1 :

[0073] See also Figure 1 and Figure 2 , Figure 1 This is a perspective view of the power conversion system in Embodiment 1 of this application. Figure 2This is a front view of the power conversion system in Embodiment 1 of this application. The power conversion system includes a first layer of power converters and a second layer of power converters stacked and spaced apart along a first direction x. Along the first direction x, the first layer of power converters is closer to the ground than the second layer. The first layer of power converters includes a first column of power converters 11 and a second column of power converters 12 arranged opposite to each other and spaced apart along a second direction y. The second layer of power converters includes a third column of power converters 21 and a fourth column of power converters 22 arranged opposite to each other and spaced apart along the second direction y. Along the first direction x, the first column of power converters 11 and the third column of power converters 21 are stacked and spaced apart, and the second column of power converters 12 and the fourth column of power converters 22 are stacked and spaced apart. Each column of power converters in the power conversion system includes at least two power converters spaced apart along a third direction z. The first direction x, the second direction y, and the third direction z are perpendicular to each other. Typically, when the ground is horizontal, the first direction x is the vertical direction, and the second direction y and the third direction z are horizontal directions.

[0074] To simplify the accompanying drawings, the power converter structure is shown as a simple block in the drawings of all embodiments of the power conversion system provided in this application. Below, for easier understanding of the stacking and arrangement of the power converters in the power conversion system, please refer to... Figure 3A and Figure 3B ,in, Figure 3A This is one of the perspective views of the power converter in the power conversion system provided in any embodiment of this application. Figure 3B This is a second perspective view of a power converter in a power conversion system provided in any embodiment of this application. It is worth mentioning that... Figure 3A The display perspective of medium power converters and Figure 1 The display perspectives for the medium-power converters are largely the same. Specifically, the power converter includes adjacent power cavities 111 and heat dissipation cavities 112, which are arranged sequentially along the third direction z. Power cavity 111 houses the circuit board and components fixed to it (such as power modules, relays, capacitors, etc.). In addition, power cavity 111 also houses a portion of an inductor, with the other portion fixedly connected to a heat sink, which is at least partially located within heat dissipation cavity 112. Heat dissipation cavity 112 includes an air inlet 1121 and an air outlet. Air from outside the power converter enters through the air inlet 1121 to cool the heat sink and then exits through the air outlet. The air inlet 1121 is located at the bottom of the power converter, and the air outlet is located at the top. That is, along the first direction, the air inlet 1121 of each power converter is closer to the ground than the air outlet.

[0075] As mentioned above, power converters generate a significant amount of heat during operation. To dissipate this heat effectively, inductors or power modules (such as Insulated-Gate Bipolar Transistors—IGBTs) that generate substantial heat are typically connected to heat sinks. These heat sinks usually have multiple heat dissipation fins to increase the contact area between the heat sink and the air, thereby improving heat dissipation efficiency. Furthermore, an air duct is installed between the power converter's air inlet 1121 and air outlet, and a fan (not shown) is generally installed within this duct. When the fan operates, it generates air pressure, drawing air from outside the power converter through the air inlet 1121 to cool the heat sink. This air carries away heat from the heat sink and is eventually exhausted from the air outlet. It is worth noting that when the power converter is operating normally, because the air in the air duct carries some heat from the heat sink, the temperature of the air exhausted from the air outlet is higher than the temperature of the air drawn in through the air inlet 1121. Therefore, the hotter air, with its lower air density, naturally rises. Based on this, the air outlet is placed on the top of the power converter. After the cold air from the outside is drawn into the power converter, it is more easily discharged from the air outlet after passing through the heat dissipation teeth of the inductor or power module heat sink.

[0076] Furthermore, such as Figure 3A and Figure 3B As shown, the air outlet includes a front air outlet 1124 and a rear air outlet 1123 arranged opposite each other along a third direction z. The air outlet also includes a left air outlet 1122 and a right air outlet 1125 arranged opposite each other along a second direction y. It is understood that since the left air outlet 1122 and the right air outlet 1125 are arranged opposite each other along the second direction, the airflow from the left air outlet 1122 and the right air outlet 1125 also extends along the second direction y. It is worth mentioning that in practical applications, the front air outlet 1124, the rear air outlet 1123, the left air outlet 1122, and the right air outlet 1125 can be configured as needed, and this application does not impose any limitations on this. For example, only one of the front air outlet 1124, the rear air outlet 1123, the left air outlet 1122, and the right air outlet 1125 may be retained, or two of them may be retained, or three of them may be retained, or all of them may be retained. It is worth mentioning that the term "air outlet" mentioned in all embodiments of this application is a general term, and the air outlet can be further subdivided.

[0077] Furthermore, the power converter also includes a panel 1111, which is the front of the power converter. Typically, panel 1111 displays a logo indicating the brand origin of the power converter. In practical applications, panel 1111 also includes indicator lights to indicate the operating status of the power converter. When the power converter includes a front air outlet 1124, panel 1111 is positioned opposite the front air outlet 1124 along the third direction z, and panel 1111 is used to shield the front air outlet 1124. That is, the projection of the front air outlet 1124 along the third direction z is within the outline of panel 1111. This configuration ensures that when maintenance personnel are in front of panel 1111, the hot air blown from the front air outlet 1124 will not blow directly onto them, guaranteeing their safety.

[0078] Furthermore, the power conversion system also includes two partitions 101. One partition 1011 is located between the air outlet of the first column of power converters 11 and the air inlet 1121 of the third column of power converters 21, and the other partition 1012 is located between the air outlet of the second column of power converters 12 and the air inlet 1121 of the fourth column of power converters 22.

[0079] With this configuration, the hot air blown out by the power converter in the first row of power converters 11 will not be directly drawn into the air inlet 1121 of the power converter in the third row of power converters 21, thus ensuring the cooling efficiency of the power converter in the third row of power converters 21. Similarly, the hot air blown out by the power converter in the second row of power converters 12 will not be directly drawn into the air inlet 1121 of the power converter in the fourth row of power converters 22, thus ensuring the cooling efficiency of the power converter in the fourth row of power converters 22.

[0080] Furthermore, both partitions 101 extend along the second direction y and the third direction z, and one partition 1011 is symmetrically arranged with the other partition 1012.

[0081] With this configuration, the hot air blown out by the first power converter 11 will not be directly drawn into the air inlet 1121 of the power converter in the fourth power converter 22, and the hot air blown out by the second power converter 12 will not be directly drawn into the air inlet 1121 of the power converter in the third power converter 21, thereby ensuring the cooling efficiency of the power converter in the fourth power converter 22.

[0082] Furthermore, both partition 1011 and partition 1012 are inclined relative to the first direction x. See details. Figure 2As the distance between one partition 1011 and the second column of power converters 12 or the fourth column of power converters 22 along the second direction y decreases, the distance between one partition 1011 and the third column of power converters 21 along the first direction x also gradually decreases. Similarly, as the distance between another partition 1012 and the first or third column of power converters 21 along the second direction y decreases, the distance between another partition 1012 and the fourth column of power converters 22 along the first direction x also gradually decreases. In other words, the two partitions 101 symmetrically form a figure-eight shape.

[0083] With this configuration, the hot air exhausted from the outlets of the first and second power converters 11 and 12 will converge in the passageway between the third and fourth power converters, and finally be discharged from the power conversion system. Specifically, the airflow path from the first layer of power converters into the passageway between the third and fourth power converters can be referenced... Figure 2 The black arrow in the image indicates this. Additionally, the inclined arrangement of the two baffles 101 allows for better guidance and exhaust of hot air from the first and second power converters 11 and 12. Finally, by tilting the two baffles 101, atmospheric air is more easily drawn in through the air inlets 1121 of the power converters in the second layer. Specifically, the airflow path in the second layer power converter can be referenced... Figure 2 The white arrow in the middle.

[0084] Furthermore, the projection of the first column of power converters 11 along the first direction x is located within the outline of the projection of a partition 1011, and the projection of the second column of power converters 12 along the first direction x is located within the outline of the projection of another partition 1012.

[0085] This configuration minimizes the risk of hot air from the power converter outlet in the first-layer power converter bypassing the edge of the partition 101 and being drawn into the power converter inlet 1121 in the second-layer power converter, thus improving the heat dissipation efficiency of the power conversion system.

[0086] It should be noted that in practical applications, the two partitions 101 can also extend only along the second direction y and the third direction z, that is, the two partitions are perpendicular to the first direction x. This application does not impose any restrictions on this. Furthermore, the main purpose of the symmetrical arrangement of the two partitions 101 in this application is to maintain consistency in the air outlet patterns of the first column of power converters 11 and the second column of power converters 12. For example, both can outlet air into the power conversion system, that is, into the passageway between the first column of power converters 11 and the second column of power converters 12, or both can outlet air into the outside of the power conversion system. Therefore, "symmetrical arrangement" in practical applications is not a strict mirror symmetry. Even if the positions of the two partitions 101 are slightly misaligned, or even if one partition 1011 is horizontally positioned while the other partition 1012 is tilted towards the first direction x, the effect of basically consistent air outlet patterns can still be achieved.

[0087] See also Figure 1 and Figure 2 The power conversion system also includes two first baffles 102, both extending towards the ground along a first direction x. Along a second direction y, one of the first baffles 1021 is fixed to one end of a partition 1011, and the other first baffle 1022 is fixed to one end of another partition 1012. Further, along the second direction y, the first baffles 102 are positioned opposite to either the left air outlet 1122 or the right air outlet 1125. Specifically… Figure 2 In the middle, a first baffle 1021 is arranged opposite to the left air outlet 1122 of the first column power converter 11 to block the left air outlet 1122 of the first column power converter 11, and another first baffle 1022 is arranged opposite to the right air outlet 1125 of the second column power converter 12 to block the right air outlet 1125 of the second column power converter 12.

[0088] This configuration minimizes the risk of hot air from the left or right air outlet 1122 or right air outlet 1125 of the first-layer power converter being drawn into the air inlet 1121 of the power converter in the second-layer power converter by bypassing the edge of the partition 101, thus improving the heat dissipation efficiency of the power conversion system.

[0089] Furthermore, along the first direction x, the end of one first baffle 1021 near the ground is closer to the ground than the left air outlet 1122 of any power converter in the first column of power converters 11, and the end of the other first baffle 1022 near the ground is closer to the ground than the right air outlet 1125 of any power converter in the second column of power converters 12.

[0090] In other words, the projection of the left air outlet 1122 of any power converter in the first row of power converters 11 along the second direction y lies within the outline of a first baffle 1022, and the projection of the right air outlet 1125 of any power converter in the second row of power converters 12 along the second direction y lies within the outline of another first baffle 1022. This arrangement better prevents hot air blown from the first row of power converters 11 from bypassing one first baffle 1022 and being drawn into the air inlet 1121 of the power converter in the third row of power converters 21, and better prevents hot air blown from the second row of power converters 12 from bypassing another first baffle 1022 and being drawn into the air inlet 1121 of the power converter in the fourth row of power converters 22, thus improving the heat dissipation efficiency of the power conversion system.

[0091] It is worth mentioning that in practical applications, the number of first baffles 102 may be changed due to changes in the installation site and environment. For example, one of the first baffles 1021 or the other first baffle 1022 may be retained. This application does not limit this.

[0092] See also Figure 1 and Figure 2 The power conversion system also includes two second baffles 103, which are located in the passageway between the third row of power converters 21 and the fourth row of power converters 22. Both second baffles 103 extend away from the ground along a first direction x, and along a second direction y, one second baffle 1031 is fixed to the other end of a partition 1011, and the other second baffle 1032 is fixed to the other end of a partition 1012.

[0093] When there is strong air convection along the second direction y outside the power conversion system, by setting the second baffle 103, the hot air discharged from the first row of power converters 11 and the second row of power converters 12 can be blown into the air inlet 1121 of the power converter in the third row of power converters 21 or the air inlet 1121 of the power converter in the fourth row of power converters 22, thereby improving the heat dissipation efficiency of the power conversion system.

[0094] Furthermore, along the first direction x, the end of one second baffle 1031 that is farther from the ground is farther from the ground than the air inlet 1121 of any power converter in the third column of power converters 21, and the end of another second baffle 1032 that is farther from the ground is farther from the ground than the air inlet 1121 of any power converter in the fourth column of power converters 22.

[0095] In other words, along the second direction y, one second baffle 1031 blocks the air inlet 1121 of any power converter in the third column of power converters 21, and another second baffle 1032 blocks the air inlet 1121 of any power converter in the fourth column of power converters 22.

[0096] This configuration better prevents hot air from bypassing one second baffle 1031 and being drawn into the air inlet 1121 of the third power converter 21, and better prevents hot air from bypassing another second baffle 1032 and being drawn into the air inlet 1121 of the fourth power converter 22.

[0097] It is worth mentioning that in practical applications, the number of second baffles 103 may be changed due to changes in the installation site and environment. For example, one second baffle 1031 or another second baffle 1032 may be retained. This application does not limit this.

[0098] Example 2:

[0099] See Figure 4 and Figure 5 , Figure 4 This is a perspective view of the power conversion system in Embodiment 2 provided in this application. Figure 5 This is a front view of the power conversion system in Embodiment 2 of this application. Unlike Embodiment 1, in the power conversion system provided in Embodiment 2, as the distance between one partition 1011 and the second column of power converters 12 or the fourth column of power converters 22 along the second direction y increases, the distance between one partition 1011 and the third column of power converters 21 along the first direction x gradually decreases. Similarly, as the distance between another partition 1012 and the first or third column of power converters 21 along the second direction y increases, the distance between the other partition 1012 and the fourth column of power converters 22 along the first direction x gradually decreases. In other words, the two partitions 101 symmetrically form an inverted "V" shape.

[0100] This configuration also avoids hot air cascading between the first and second power converters. Specifically, the air in the passageway between the first and second power converters 11 and 12 can be drawn in by the air inlets 1121 of the third and fourth power converters 22, respectively, while the hot air exhausted from the outlets of the first and second power converters 12 will not be discharged into the passageway between them. For details, the airflow path in the first power converter can be found in [reference needed]. Figure 5 The black arrows in the diagram indicate the airflow path in the second-layer power converter. Figure 5 The white arrow in the middle.

[0101] Furthermore, unlike Embodiment 1, in the power conversion system provided in Embodiment 2, a first baffle 1021 is disposed opposite to the right air outlet 1125 of the first column of power converters 11 to block the right air outlet 1125 of the first column of power converters 11, and another first baffle 1022 is disposed opposite to the left air outlet 1122 of the second column of power converters 12 to block the left air outlet 1122 of the second column of power converters 12.

[0102] This configuration minimizes the risk of hot air from the left or right air outlet 1122 or right air outlet 1125 of the power converter in the first layer bypassing the edge of the partition 101 and being drawn into the air inlet 1121 of the power converter in the second layer, thus improving the heat dissipation efficiency of the power conversion system.

[0103] Furthermore, along the first direction x, the end of one first baffle 1021 near the ground is closer to the ground than the right air outlet 1125 of any power converter in the first column of power converters 11, and the end of another first baffle 1022 near the ground is closer to the ground than the left air outlet 1122 of any power converter in the second column of power converters 12.

[0104] In other words, the projection of the right air outlet 1125 of any power converter in the first row of power converters 11 along the second direction y lies within the outline of a first baffle 1021, and the projection of the left air outlet 1122 of any power converter in the second row of power converters 12 along the second direction y lies within the outline of another first baffle 1022. This arrangement better prevents hot air blown from the first row of power converters 11 from bypassing one first baffle 1021 and being drawn into the air inlet 1121 of the power converter in the third row of power converters 21, and better prevents hot air blown from the second row of power converters 12 from bypassing another first baffle 1022 and being drawn into the air inlet 1121 of the power converter in the fourth row of power converters 22, thus improving the heat dissipation efficiency of the power conversion system.

[0105] Furthermore, unlike Embodiment 1, in the power conversion system provided in Embodiment 2, the two second baffles 103 are not located in the passage between the third column power converter 21 and the fourth column power converter 22, but are located outside the third column power converter 21 and the fourth column power converter 22 along the second direction y.

[0106] It is worth mentioning that in practical applications, the number of second baffles 103 may change due to changes in the installation site and environment. For example, one of the first baffles 1021 or another first baffle 1022 may be retained, and one of the second baffles 1031 or another second baffle 1032 may be retained. This application does not impose any restrictions on this.

[0107] Example 3:

[0108] See Figure 6 and Figure 7 , Figure 6 This is a perspective view of the power conversion system in Embodiment 3 provided in this application. Figure 7 This is a front view of the power conversion system in Embodiment 3 of this application. Unlike Embodiment 1, the power conversion system in Embodiment 3 includes a three-layer power converter, wherein the first-layer power converter, the second-layer power converter, and the third-layer power converter are stacked sequentially. The third-layer power converter includes a fifth column of power converters 31 and a sixth column of power converters 32 arranged opposite to and spaced apart along the second direction y. The fifth column of power converters 31 and the third column of power converters 31 are stacked and spaced apart along the first direction x, and the sixth column of power converters 32 and the fourth column of power converters 32 are stacked and spaced apart along the first direction x.

[0109] Furthermore, the second-layer power converter and the third-layer power converter also include two partitions 101, two first baffles 102, and two second baffles 103. The structure of the two partitions 101 and their positions relative to the second-layer power converter and the third-layer power converter can be seen in the two partitions 101 between the first-layer power converter and the second-layer power converter in Embodiment 1. The connection relationship between the two partitions 101 and the corresponding two first baffles 102 and the corresponding two second baffles 103 can also be seen in the two first baffles 102 and the two second baffles 103 corresponding to the first-layer power converter and the second-layer power converter in Embodiment 1, and will not be described in detail here.

[0110] Specifically, the air flow paths in the first-layer power converter and the third-layer power converter can be found in [reference needed]. Figure 7 The white arrow in the image indicates the airflow path in the second-layer power converter. Figure 7 The black arrow in the image.

[0111] Example 4:

[0112] See Figure 8 and Figure 9 , Figure 8 This is a perspective view of the power conversion system in Embodiment 4 provided in this application. Figure 9This is a front view of the power conversion system in Embodiment 4 of this application. Unlike Embodiment 2, the power conversion system in Embodiment 4 includes a three-layer power converter, wherein the first-layer power converter, the second-layer power converter, and the third-layer power converter are stacked sequentially. The third-layer power converter includes a fifth column of power converters 31 and a sixth column of power converters 32 arranged opposite to and spaced apart along the second direction y. The fifth column of power converters 31 and the third column of power converters 31 are stacked and spaced apart along the first direction x, and the sixth column of power converters 32 and the fourth column of power converters 32 are stacked and spaced apart along the first direction x.

[0113] Furthermore, the second-layer power converter and the third-layer power converter also include two partitions 101, two first baffles 102, and two second baffles 103. The structure of the two partitions 101 and their positions relative to the second-layer power converter and the third-layer power converter can be seen in the two partitions 101 between the first-layer power converter and the second-layer power converter in Embodiment 2. The connection relationship between the two partitions 101 and the corresponding two first baffles 102 and the corresponding two second baffles 103 can also be seen in the two first baffles 102 and the two second baffles 103 corresponding to the first-layer power converter and the second-layer power converter in Embodiment 2, and will not be described in detail here.

[0114] Specifically, the air flow paths in the first-layer power converter and the third-layer power converter can be found in [reference needed]. Figure 9 The white arrow in the image indicates the airflow path in the second-layer power converter. Figure 9 The black arrow in the image.

[0115] Example 5:

[0116] See Figure 10 and Figure 11 , Figure 10 This is a perspective view of the power conversion system in Embodiment 5 provided in this application. Figure 11 This is a front view of the power conversion system in Embodiment 5 of this application. Unlike Embodiment 2, the power conversion system provided in Embodiment 5 includes a three-layer power converter, wherein the first-layer power converter, the second-layer power converter, and the third-layer power converter are stacked sequentially. The third-layer power converter includes a fifth column of power converters 31 and a sixth column of power converters 32 arranged opposite to and spaced apart along the second direction y. The fifth column of power converters 31 and the third column of power converters 31 are stacked and spaced apart along the first direction x, and the sixth column of power converters 32 and the fourth column of power converters 32 are stacked and spaced apart along the first direction x.

[0117] Furthermore, the second-layer power converter and the third-layer power converter also include two partitions 101, two first baffles 102, and two second baffles 103. The structure of the two partitions 101 and their positions relative to the second-layer power converter and the third-layer power converter can be seen in the two partitions 101 between the first-layer power converter and the second-layer power converter in Embodiment 1. The connection relationship between the two partitions 101 and the corresponding two first baffles 102 and the corresponding two second baffles 103 can also be seen in the two first baffles 102 and the two second baffles 103 corresponding to the first-layer power converter and the second-layer power converter in Embodiment 1, and will not be described in detail here.

[0118] Specifically, the air flow paths in the first-layer power converter and the third-layer power converter can be found in [reference needed]. Figure 11 The white arrow in the image indicates the airflow path in the second-layer power converter. Figure 11 The black arrow in the image.

[0119] Example 6:

[0120] See Figure 12 and Figure 13 , Figure 12 This is a perspective view of the power conversion system in Embodiment Six provided in this application. Figure 13 This is a front view of the power conversion system in Embodiment Six of this application. Unlike Embodiment One, the power conversion system in Embodiment Six further includes multiple third baffles 104. Specifically, a third baffle 104 connects between any two adjacent power converters in any of the following columns: the first column of power converters 11, the second column of power converters 12, the third column of power converters 21, and the fourth column of power converters 22. Along the first direction x, the third baffle 104 connecting between two adjacent power converters in the first column of power converters 11 is closer to the ground than the front air outlet 1124 or rear air outlet 1123 of the power converter connected to it in the first column of power converters 11. Similarly, the third baffle 104 connecting between two adjacent power converters in the second column of power converters 12 is closer to the ground than the front air outlet 1124 or rear air outlet 1123 of the power converter connected to it. The third baffle 104 between two adjacent power converters in the third column of power converters 21 is closer to the ground than the front air outlet 1124 or rear air outlet 1123 of the power converter connected to the third baffle 104 in the third column of power converters 21. Similarly, the third baffle 104 between two adjacent power converters in the fourth column of power converters 22 is closer to the ground than the front air outlet 1124 or rear air outlet 1123 of the power converter connected to the third baffle 104 in the fourth column of power converters 22.

[0121] It is worth mentioning that the number of the third baffle 104 can be set as needed, that is, the number of the third baffle 104 can be one or more, and this application embodiment does not limit this.

[0122] With this configuration, when there is strong convection in the outside along the first direction x, it can prevent the strong convection from blowing the hot air discharged from the air outlet of any power converter into the air inlet 1121 of the power converter in that column, thus improving the heat dissipation efficiency of the power conversion system.

[0123] Furthermore, along the second direction y, the edge of the third baffle 104 located between two adjacent power converters extends beyond the edges of the two adjacent power converters.

[0124] This configuration minimizes the risk of hot air being drawn into the air inlets 1121 of the two adjacent power converters by bypassing the edge of the third baffle 104 between them, thus improving the heat dissipation efficiency of the power conversion system.

[0125] It is worth mentioning that, in practical applications, the edge of the third baffle 104 located between two adjacent power converters can also be flush with the edges of the two adjacent power converters, and this application does not impose any restrictions on this.

[0126] This configuration minimizes the risk of hot air being drawn into the air inlets 1121 of the two adjacent power converters by bypassing the edge of the third baffle 104 between them, thus improving the heat dissipation efficiency of the power conversion system.

[0127] It is worth mentioning that, Figure 12 and Figure 13 In this design, the third baffle 104 corresponding to the first column power converter 11 and the second column power converter 12 is fixedly connected to the first baffle 102, and the third baffle 104 corresponding to the third column power converter 21 and the fourth column power converter 22 is fixedly connected to the second baffle 103. Therefore, the baffle 101, the first baffle 102, the second baffle 103, and the third baffle 104 form an integral structure. This arrangement facilitates installation and processing. It should be noted that "integrated structure" is not limited to "one-piece molding" in processing; as long as they can be interconnected to form a whole, this application does not impose any restrictions. For example, in practical applications, the third baffle 104 and the other three can also be separate components, but they can be installed and fixed together to ultimately form an integral structure.

[0128] Specifically, the airflow path in the first-layer power converter can be seen in [reference needed]. Figure 13 The black arrows in the diagram indicate the airflow path in the second-layer power converter. Figure 13 The white arrow in the middle.

[0129] Example 7:

[0130] See Figure 14 and Figure 15 , Figure 14 This is a perspective view of the power conversion system in Embodiment 7 provided in this application. Figure 15 This is a front view of the power conversion system in Embodiment 7 provided in this application. Unlike Embodiment 1, the power conversion system provided in Embodiment 7 further includes two fourth baffles 105. Specifically, both fourth baffles 105 extend along a first direction x and a third direction z. The two fourth baffles 105 are disposed in the interval region between the first column of power converters 11 and the second column of power converters 12. One fourth baffle 1051 and the other fourth baffle 1052 are disposed opposite each other along a second direction y. It should be noted that in Embodiment 1, the first layer of power converters including the first column of power converters 11 and the second column of power converters 12, and the second layer of power converters including the third column of power converters 21 and the fourth column of power converters 22, refer to any two adjacent layers of power converters in the power conversion system. Along the first direction x, the first layer of power converters is closer to the ground than the second layer of power converters. However, in this embodiment seven, the first layer of power converters, including the first column of power converters 11 and the second column of power converters 12, specifically refers to the layer of power converters closest to the ground in the power conversion system.

[0131] See also Figure 14 and Figure 15 Along the first direction x, the end of a fourth baffle 1051 furthest from the ground is farther from the ground than the air inlet 1121 of the power converter in the first row of power converters, and the end of a fourth baffle 1051 closest to the ground is closer to the ground than the air inlet 1121 of the power converter in the first row of power converters. Similarly, along the first direction x, the end of another fourth baffle 1052 furthest from the ground is farther from the ground than the air inlet 1121 of the power converter in the second row of power converters, and the end of another fourth baffle 1052 closest to the ground is closer to the ground than the air inlet 1121 of the power converter in the second row of power converters.

[0132] In practical applications, along the first direction x, the distance between the end of the fourth baffle 105 away from the ground and the ground can also be equal to the distance between the air inlet of the power converter in the corresponding row of power converters and the ground.

[0133] It is worth mentioning that the number of the fourth baffle 105 can be set as needed, that is, the number of the fourth baffle 105 can be one or more, and this application embodiment does not limit this.

[0134] When there is strong convection in the outside along the second direction y, by setting the fourth baffle 105, the strong convection can be blocked from flowing rapidly between the bottom of the first column power converter 11 and the second column power converter 12, thereby increasing the air intake of the first column power converter 11 and the second column power converter 12 and improving the heat dissipation efficiency of the power conversion system.

[0135] Furthermore, along the second direction y, the distance between one fourth baffle 1051 and the first column power converter 11 is smaller than the distance between another fourth baffle 1052 and the first column power converter 11, and the distance between another fourth baffle 1052 and the second column power converter 12 is smaller than the distance between one fourth baffle 1051 and the second column power converter 12.

[0136] This configuration can better block the wind between the first row of power converters 11 and the ground. Similarly, it can also block the wind between the second row of power converters 12 and the ground, thereby increasing the air intake of the first row of power converters 11 and the second row of power converters 12.

[0137] Further, see also Figure 14 and Figure 15 Unlike Embodiment 1, the power conversion system provided in Embodiment 7 also includes a base 50, which is disposed on the ground and used to support the power converter. It is worth mentioning that in practical applications, the power conversion system typically also includes a support structure (not shown), such as a bracket, for hanging or mounting the power converter. The support structure is placed on the base 50. By setting up the base 50, a relatively stable support can be provided for the power converter, ensuring the stable setup of the power conversion system.

[0138] Furthermore, the end of the fourth baffle 105 near the ground is fixedly connected to the base 50. This arrangement can better block the wind between the first row of power converters 11 and the ground, and also better block the wind between the second row of power converters 12 and the ground, thereby increasing the air intake of the first row of power converters 11 and the second row of power converters 12.

[0139] It is worth mentioning that, in practical applications, the fourth baffle 105 can also extend along the first direction x and the second direction y, and along the third direction z, the fourth baffle 105 is disposed outside the first column of power converters 11 or the second column of power converters 12. Along the first direction x, the end of the fourth baffle 105 away from the ground is further away from the ground than the air inlet 1121 of any of the power converters in the first layer of power converters.

[0140] Similarly, when there is strong convection in the external environment along the third direction z, by setting the fourth baffle 105, the strong convection can be blocked from flowing rapidly between the bottom of the first column power converter 11 and the second column power converter 12, thereby increasing the air intake of the first column power converter 11 and the second column power converter 12 and improving the heat dissipation efficiency of the power conversion system.

[0141] Furthermore, the power conversion system also includes multiple fifth baffles 106, which are connected between two adjacent power converters in either the first column of power converters 11 or the second column of power converters 12. Along the first direction x, the fifth baffle 1061 connected between two adjacent power converters in the first column of power converters 11 is further from the ground than the air inlet 1121 of the power converter connected to it, and the fifth baffle 1062 connected between two adjacent power converters in the second column of power converters 12 is closer to the ground than the air inlet 1121 of the power converter connected to it.

[0142] It is worth mentioning that, in practical applications, the fifth baffle 106 can be set as needed, that is, the number of the fifth baffle 106 can be one or more, and this application does not limit this.

[0143] When there is strong convection along the third direction z in the outside, by setting the fifth baffle 106, the hot air discharged from the air outlet of the power converter in the first column of power converters 11 can be prevented from being blown into the air inlet 1121 of the power converter. Similarly, the hot air discharged from the air outlet of the power converter in the second column of power converters 12 can also be prevented from being sucked into the air inlet 1121 of the power converter, thereby improving the heat dissipation efficiency of the power conversion system.

[0144] Furthermore, along the second direction y, the edge of the fifth baffle 106 located between two adjacent power converters extends beyond the edges of the two adjacent power converters.

[0145] This configuration minimizes the risk of hot air being drawn into the air inlets 1121 of the two adjacent power converters by bypassing the edge of the fifth baffle 106 between them, thus improving the heat dissipation efficiency of the power conversion system.

[0146] It is worth mentioning that, in practical applications, along the second direction y, the edge of the fifth baffle 106 located between two adjacent power converters can also be flush with the edges of the two adjacent power converters, and this application does not impose any restrictions on this.

[0147] It is worth mentioning that, Figure 14 and Figure 15In this design, a fourth baffle 1051 is fixedly connected to a fifth baffle 106 connecting two adjacent power converters in the first column of power converters 11, and another fourth baffle 1052 is fixedly connected to a fifth baffle 106 connecting two adjacent power converters in the second column of power converters 12. That is, the fourth baffle 105 and the fifth baffle 106 are an integral structure. This arrangement facilitates installation and processing. It should be noted that "integral structure" is not limited to "one-piece molding" in processing; as long as they can be connected to form a whole, this application does not impose any restrictions. For example, in practical applications, the fourth baffle 105 and the fifth baffle 106 can also be separate, but they can be installed and fixed together to ultimately form an integral structure; this application does not impose any restrictions on this.

[0148] Specifically, the airflow path in the first-layer power converter can be seen in [reference needed]. Figure 15 The black arrows in the diagram indicate the airflow path in the second-layer power converter. Figure 15 The white arrow in the middle.

[0149] Example 8:

[0150] See Figure 16 , Figure 16 This is a perspective view of the power conversion system in Embodiment 8 of this application. Unlike Embodiment 1, the power conversion system provided in Embodiment 8 further includes two sixth baffles 107. The two sixth baffles 107 extend along a first direction x and a second direction y, and are arranged opposite to each other along a third direction z, abutting against the partition 101. Along the third direction z, the projections of multiple power converters are located within the outline of the sixth baffles 107.

[0151] By setting the sixth baffle 107, the hot air discharged from the power converters arranged along the third direction z in the first row of power converters 11 can be prevented from bypassing the edge of the partition 101 between the first row of power converters 11 and the third row of power converters 21 and being sucked into the air inlet 1121 of the power converter in the third row of power converters 21 that is opposite to the power converter in the first direction x. Similarly, the hot air discharged from the power converters arranged along the third direction z in the second row of power converters 12 can also be prevented from bypassing the edge of the partition 101 between the second row of power converters 12 and the fourth row of power converters 22 and being sucked into the air inlet 1121 of the power converter in the fourth row of power converters 22 that is opposite to the power converter in the first direction x, thereby improving the heat dissipation efficiency of the power conversion system.

[0152] It is worth mentioning that, in practical applications, the number of the sixth baffle 107 can be set as needed, that is, the number of the sixth baffle 107 can be one or more, and this application does not limit this.

[0153] Example 9:

[0154] See Figure 17 and Figure 18 , Figure 17 This is a perspective view of the power conversion system in Embodiment 9 provided in this application. Figure 18 This is a front view of the power conversion system in Embodiment Nine of this application. Unlike Embodiment One, the power conversion system provided in Embodiment Nine further includes two seventh baffles 108. The seventh baffles 108 are frame-shaped and extend along the first direction x. The seventh baffles 108 are fitted around the periphery of the power converters in the second layer of power converters. It is worth noting that when the power conversion system includes more than two layers of power converters, the seventh baffles 108 are fitted around the periphery of any column of power converters in the layer of power converters furthest from the ground (i.e., the topmost power converter). Furthermore, in practical applications, the seventh baffles 108 can also be set as needed; that is, the seventh baffles 108 can be set only for one or a few columns of power converters.

[0155] Furthermore, along the first direction x, the end of the seventh baffle 108 closer to the ground is closer to the ground than the air outlet of any one of the power converters in the row of power converters mounted on the seventh baffle 108, and the end of the seventh baffle 108 farther from the ground is farther from the ground than the air outlet of any one of the power converters in the row of power converters mounted on the seventh baffle 108.

[0156] When there is strong convection in the outside along the second direction y or the third direction z, the seventh baffle 108 can block the strong convection as much as possible, thereby allowing the top power converter to smoothly expel hot air and improve the heat dissipation efficiency of the power conversion system.

[0157] Specifically, the airflow path in the first-layer power converter can be seen in [reference needed]. Figure 18 The black arrows in the diagram indicate the airflow path in the second-layer power converter. Figure 18 The white arrow in the middle.

[0158] Example 10:

[0159] See Figure 19 and Figure 20 , Figure 19 This is a perspective view of the power conversion system in Embodiment 10 provided in this application. Figure 20This is a front view of the power conversion system in Embodiment 10 of this application. Unlike Embodiment 1, the power conversion system in Embodiment 10 omits the first baffle 102 and the second baffle 103, and adds an air guide shroud 109. The air guide shroud 109 includes a lower air guide shroud 1091 and an upper air guide shroud 1092, wherein the lower air guide shroud 1091 is located between the first-layer power converter and the ground, and the upper air guide shroud 1092 is located between the first-layer power converter and the second-layer power converter. Figure 19 and Figure 20 In the power conversion system, there are two lower air guide shrouds 1091, one of which is located between the first row of power converters 11 and the ground, and the other air guide shroud 109 is located between the second row of power converters 12 and the ground.

[0160] Furthermore, the lower air guide shroud 1091 also includes the fourth baffle 105 described in Embodiment 7. Along the third direction z, the two ends of the fourth baffle 105 are also connected to two first connecting plates that are arranged opposite each other along the third direction z.

[0161] Furthermore, along the first direction x, the lower air guide shroud 1091 also includes two opposing and spaced-apart first support plates, which are fixedly connected to the fourth baffle 105 and the first connecting plate, thus forming a shroud together.

[0162] Furthermore, along the second direction y, the air inlets 1121 of the two lower air guide shrouds 1091 both draw air from outside the power conversion system. Of course, in actual applications, the air inlets 1121 of the two lower air guide shrouds 1091 can also draw air from inside the power conversion system, that is, from the passage between the first row of power converters 11 and the second row of power converters 12.

[0163] By setting the lower air guide shroud 1091, the wind can be blocked better, which makes it easier for the first-layer power converter to draw in air from outside the power conversion system.

[0164] Furthermore, the upper air guide shroud 1092 is provided with two second connecting plates that are opposite to each other and spaced apart along the third direction z and two second support plates that are opposite to each other and spaced apart along the first direction x. The two second connecting plates and the two second support plates enclose a receiving space. A partition 101 is provided in the receiving space. The structure of the partition 101 and the positional relationship between the partition 101 and the first-layer power converter and the second-layer power converter can be referred to Embodiment 1 and Embodiment 2, and will not be repeated here.

[0165] By setting the upper air guide shroud 1092, the cold air can be better guided into the heat dissipation cavity 112 of the second-layer power converter.

[0166] Furthermore, the power conversion system provided in Embodiment 10 is further equipped with a duct cover 110. The duct cover 110 includes two third connecting plates that are opposite to each other and spaced apart along the second direction y and two fourth connecting plates that are opposite to each other and spaced apart along the third direction z. The third connecting plates and the fourth connecting plates are connected in sequence to form a duct. The duct cover 110 is connected to the air outlet of the first layer power converter, so as to smoothly discharge the hot air discharged by the first layer power converter from the power conversion system and avoid hot air cascading.

[0167] Specifically, the airflow path in the first-layer power converter can be seen in [reference needed]. Figure 20 The black arrows in the diagram indicate the airflow path in the second-layer power converter. Figure 20 The white arrow in the middle.

[0168] It should be noted that in the accompanying drawings of the power conversion system provided in all embodiments of this application, the first direction x, the second direction y, and the third direction z are not limited by the direction of the arrow, that is, the opposite direction of the arrow is also the corresponding direction.

[0169] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A power conversion system, characterized by, The power converter includes a plurality of power converters and two partitions, wherein: The plurality of power converters are used to convert direct current from a photovoltaic assembly or an energy storage battery into alternating current and transmit the alternating current to a power grid, the plurality of power converters include at least two layers of power converters stacked and spaced apart along a first direction, each layer of power converters in the at least two layers of power converters includes at least two columns of power converters spaced apart and opposite along a second direction, each column of power converters in the at least two columns of power converters includes at least two power converters spaced apart along a third direction, the first direction, the second direction, and the third direction are perpendicular to each other; The power converter includes an air inlet and an air outlet, air outside the power converter enters the inside of the power converter from the air inlet and blows out from the air outlet, the air inlet is closer to the ground than the air outlet along the first direction; The at least two layers of power converters include a first layer of power converters and a second layer of power converters adjacent to each other, the first layer of power converters is closer to the ground than the second layer of power converters along the first direction, the first layer of power converters includes a first column of power converters and a second column of power converters, the second layer of power converters includes a third column of power converters and a fourth column of power converters, the first column of power converters and the third column of power converters are stacked and spaced apart along the first direction, and the second column of power converters and the fourth column of power converters are stacked and spaced apart along the first direction; One of the two partitions is arranged between the first column of power converters and the third column of power converters, and the other of the two partitions is arranged between the second column of power converters and the fourth column of power converters, the one partition and the other partition extend along the second direction and the third direction, and the one partition and the other partition are symmetrically arranged.

2. The power conversion system of claim 1, wherein, The projection of the first column of power converters along the first direction is located within the contour range of the projection of the one partition, and the projection of the second column of power converters along the first direction is located within the contour range of the projection of the other partition.

3. A power conversion system according to claim 1 or 2, characterised in that, The one partition and the other partition are arranged obliquely to the first direction.

4. The power conversion system of claim 3, wherein, As the distance between the one partition and the second column of power converters or the fourth column of power converters along the second direction decreases, the distance between the one partition and the third column of power converters along the first direction gradually decreases, and as the distance between the other partition and the first column of power converters or the third column of power converters along the second direction decreases, the distance between the other partition and the fourth column of power converters along the first direction gradually decreases.

5. The power conversion system of claim 3, wherein, With the distance between the one partition and the second column of power converters or the fourth column of power converters along the second direction being shortened, the distance between the one partition and the third column of power converters along the first direction is gradually lengthened, and with the distance between the other partition and the first column of power converters or the third column of power converters along the second direction being shortened, the distance between the other partition and the fourth column of power converters along the first direction is gradually lengthened.

6. The power conversion system of any one of claims 1-5, wherein, The air outlet comprises a left air outlet and a right air outlet arranged oppositely along the second direction; The power conversion system further comprises two first baffles, the first baffles extend towards the ground along the first direction, one of the two first baffles is fixed with one end of the one partition along the second direction, and the other of the two first baffles is fixed with one end of the other partition along the second direction; Along the second direction, the first baffles are arranged oppositely with the left air outlet or the right air outlet, and the first baffles are used to shield the left air outlet or the right air outlet.

7. The power conversion system of claim 6, wherein, Along the first direction, the end of the one first baffle close to the ground is closer to the left air outlet of any power converter in the first column of power converters than the left air outlet, and the one first baffle is used to shield the left air outlet of the first column of power converters, and the end of the other first baffle close to the ground is closer to the right air outlet of any power converter in the second column of power converters than the right air outlet, and the other first baffle is used to shield the right air outlet of the second column of power converters.

8. The power conversion system of claim 6, wherein, Along the first direction, the end of the one first baffle close to the ground is closer to the right air outlet of any power converter in the first column of power converters than the right air outlet, and the one first baffle is used to shield the right air outlet of the first column of power converters, and the end of the other first baffle close to the ground is closer to the left air outlet of any power converter in the second column of power converters than the left air outlet, and the other first baffle is used to shield the left air outlet of the second column of power converters.

9. The power conversion system of any of claims 1-6, wherein, The power conversion system further comprises two second baffles, the second baffles extend away from the ground along the first direction, one of the two second baffles is fixed with the other end of the one partition along the second direction, and the other of the two second baffles is fixed with the other end of the other partition along the second direction, and the one second baffle is used to shield the air inlet of any power converter in the third column of power converters, and the other second baffle is used to shield the air inlet of any power converter in the fourth column of power converters.

10. The power conversion system of claim 9, wherein, Along the first direction, the end of the one second baffle away from the ground is farther away from the air inlet of any power converter in the third column of power converters than the air inlet, and the end of the other second baffle away from the ground is farther away from the air inlet of any power converter in the fourth column of power converters than the air inlet.

11. The power conversion system of any of claims 1-10, wherein, The air outlet comprises at least one of a front air outlet and a rear air outlet, air directions of the front air outlet and the rear air outlet both extend along the third direction, when the front air outlet and the rear air outlet both exist, the front air outlet and the rear air outlet are oppositely arranged along the third direction; The power conversion system further comprises one or more third baffles, the third baffles are connected between any two adjacent power converters in the first column of power converters, or the second column of power converters, or the third column of power converters, or the fourth column of power converters. In the first direction, the third baffle connected between any two adjacent power converters in the first column of power converters is closer to the ground than the front air outlet or the rear air outlet of the two power converters connected with the third baffle, the third baffle connected between any two adjacent power converters in the second column of power converters is closer to the ground than the front air outlet or the rear air outlet of the two power converters connected with the third baffle, the third baffle connected between any two adjacent power converters in the third column of power converters is closer to the ground than the front air outlet or the rear air outlet of the two power converters connected with the third baffle, and the third baffle connected between any two adjacent power converters in the fourth column of power converters is closer to the ground than the front air outlet or the rear air outlet of the two power converters connected with the third baffle.

12. The power conversion system of claim 11, wherein, In the second direction, an edge of the third baffle between the two adjacent power converters is beyond or flush with edges of the two adjacent power converters.

13. The power conversion system of any of claims 1-12, wherein, The power conversion system further comprises one or more fourth baffles, the fourth baffles extend along the first direction and the third direction, and the fourth baffles are arranged in the interval region between the first column of power converters and the second column of power converters. In the first direction, an end of the fourth baffle away from the ground is farther away from the air inlet of any power converter in the first layer of power converters than the air inlet of the power converter, and an end of the fourth baffle close to the ground is closer to the air inlet of any power converter in the first layer of power converters than the air inlet of the power converter, wherein the first layer of power converters is the layer of power converters closest to the ground in the power conversion system.

14. The power conversion system of claim 13, wherein, When the power conversion system comprises two fourth baffles, one fourth baffle and the other fourth baffle are oppositely arranged along the second direction. In the second direction, the one fourth baffle is closer to the first column of power converters than the other fourth baffle, and the other fourth baffle is closer to the second column of power converters than the one fourth baffle.

15. The power conversion system of any one of claims 1-12, wherein, The power conversion system further comprises one or more fourth baffles extending along the first direction and the second direction, and disposed outside at least one row of power converters in the first layer of power converters along the third direction; along the first direction, an end of the fourth baffle away from the ground is farther away from the ground than an air inlet of the at least one row of power converters in the first layer of power converters, and an end of the fourth baffle close to the ground is closer to the ground than the air inlet of the at least one row of power converters in the first layer of power converters, wherein the first layer of power converters is the layer of power converters closest to the ground in the power conversion system.

16. The power conversion system of any one of claims 1-15, wherein, The power conversion system further comprises one or more fifth baffles connected between any two adjacent power converters in the first row of power converters or the second row of power converters. along the first direction, the fifth baffle connected between any two adjacent power converters in the first row of power converters is farther away from the ground than an air inlet of the two power converters connected with the fifth baffle, and the fifth baffle connected between any two adjacent power converters in the second row of power converters is farther away from the ground than an air inlet of the two power converters connected with the fifth baffle.

17. The power conversion system of claim 16, wherein, along the second direction, an edge of the fifth baffle between the two adjacent power converters is beyond or flush with an edge of the two adjacent power converters.

18. The power conversion system of any of claims 1-17, wherein, The power conversion system further comprises one or more sixth baffles extending along the first direction and the second direction and abutting against the partition, and the sixth baffle is located outside the plurality of power converters along the third direction, and a projection of the plurality of power converters along the third direction is located within a contour range of the sixth baffle.

19. The power conversion system of any one of claims 1-18, wherein, The power conversion system further comprises one or more seventh baffles in a frame shape and extending along the first direction, and the seventh baffle is sleeved outside a periphery of any row of power converters in a layer of power converters farthest away from the ground among the at least two layers of power converters, and along the first direction, an end of the seventh baffle close to the ground is closer to the ground than an air outlet of any power converter in the row of power converters sleeved by the seventh baffle, and an end of the seventh baffle away from the ground is farther away from the ground than the air outlet of any power converter in the row of power converters sleeved by the seventh baffle.

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