Energy storage converter

Abstract

The invention relates to the technical field of energy storage, and provides an energy storage converter which is at least beneficial to improving the heat dissipation efficiency of the energy storage converter. The energy storage converter comprises a box body, a partition plate, a radiator and a fan assembly, and the first partition plate divides a high-voltage area of the box body into an upper-layer high-voltage area and a lower-layer high-voltage area which are arranged up and down; the second partition plate and the third partition plate divide the low-voltage area of the box body into an upper-layer low-voltage area, a middle-layer low-voltage area and a lower-layer low-voltage area which are sequentially arranged from top to bottom; the radiator is located between the lower-layer low-voltage area and the lower-layer high-voltage The fan assembly is located in the lower-layer high-voltage area. Cooling air passes through the radiator from the air inlet to the lower-layer low-pressure area through the fan assembly and then is exhausted from the air outlet, so that a first air flow channel is formed; a plurality of ventilation holes are formed in the side, close to the radiator, of the first partition plate, and cooling air flows to the middle-layer low-pressure area from the air inlet through the fan assembly and the ventilation holes to form a second air flow channel; the air flow rate of the first air flow channel is larger than that of the second air flow channel.

Description

[0001] Cross - Reference to Related Applications

[0002] This application is a divisional application of the patent application with the application date of February 27, 2025, application number 2025102279915, and invention title "Energy Storage Inverter". Technical Field

[0003] This application relates to the field of energy storage technologies, and particularly to an energy storage inverter. Background Art

[0004] The high-voltage box and the power conversion system (PCS) of the energy storage system are core components in the energy storage system. The PCS is the core component for realizing bidirectional power flow between the energy storage system and the power grid, and is used to control the charging and discharging processes of the battery and perform AC-DC conversion; the high-voltage box is equipped with a control circuit for controlling the charging and discharging processes to ensure the safety and stability of the energy storage system. The combined energy storage inverter with the control circuit and the PCS integrated can adopt a divided cavity design, where the higher-power electronic devices are located in the high-voltage area, and external fans, heat exchangers, inductors (low-power devices), etc. are located in the low-voltage area to improve the integration density of the energy storage inverter.

[0005] Currently, the heat dissipation system in the energy storage inverter blows cooling air into the box through a fan to cool each device in the energy storage inverter. However, the cooling air circulates in the box. When the cooling air passes through the devices with higher temperatures, the temperature of the cooling air rises, and the heat dissipation efficiency is significantly reduced when the heated cooling air cools other devices. Summary of the Invention

[0006] An embodiment of this application provides an energy storage inverter, which at least helps to improve the heat dissipation efficiency of the energy storage inverter.

[0007] According to some embodiments of the present application, on the one hand, an energy storage converter provided by the embodiments of the present application includes: a box body, the box body includes a high-voltage area and a low-voltage area arranged adjacent to each other; a first partition board, the first partition board is located in the high-voltage area, the first partition board divides the high-voltage area into an upper high-voltage area and a lower high-voltage area arranged up and down, and one side of the lower high-voltage area of the box body away from the low-voltage area has an air inlet; a second partition board, the second partition board is located in the low-voltage area, and the second partition board is arranged on the same layer as the first partition board; a third partition board, the third partition board is located in the low-voltage area, and the third partition board is located above the second partition board, the second partition board and the third partition board divide the low-voltage area into an upper low-voltage area, a middle low-voltage area and a lower low-voltage area arranged from top to bottom in sequence, and one side of the lower low-voltage area of the box body away from the high-voltage area has an air outlet; a radiator, the radiator is located between the lower low-voltage area and the lower high-voltage area, one side of the first partition board close to the low-voltage area is fixed to the top of the radiator, and one side of the second partition board close to the high-voltage area is fixed to the top of the radiator; a fan assembly, the fan assembly is located in the lower high-voltage area, and the air outlet direction of the fan assembly faces the radiator; wherein, the cooling air passes through the fan assembly from the air inlet, passes through the radiator to the lower low-voltage area and then is discharged from the air outlet to form a first air flow channel; there are a plurality of ventilation holes on one side of the first partition board close to the radiator, and the cooling air flows from the air inlet through the fan assembly and the ventilation holes to the middle low-voltage area to form a second air flow channel; the air flow rate of the first air flow channel is greater than the air flow rate of the second air flow channel.

[0008] In some embodiments, there is at least one exhaust hole on one side of the middle low-voltage area and / or the upper low-voltage area of the box body away from the high-voltage area, and an exhaust fan is arranged on the exhaust hole.

[0009] In some embodiments, the upper part of at least one air outlet is located in the upper low-voltage area, and the lower part is located in the middle low-voltage area.

[0010] In some embodiments, the exhaust fan extracts the gas in the upper low-voltage area to form a third air flow channel, and the air flow rate of the third air flow channel is less than the air flow rate of the second air flow channel.

[0011] In some embodiments, the fan assembly includes: an air inlet net, the air inlet net is detachably fixed to the air inlet; a fan bracket, the fan bracket is detachably fixed to the air inlet net; a fan, the fan is detachably fixed to the fan bracket.

[0012] In some embodiments, the bottom of the box body has a guide rail, and the fan bracket is movably fixed on the guide rail.

[0013] In some embodiments, the first partition board includes a first part, a second part and a third part connected in sequence, the height of the first part relative to the bottom surface of the box body is higher than the height of the third part relative to the bottom surface of the box body, one side of the third part away from the second part is fixed to the top of the radiator, and the ventilation holes are located on the second part.

[0014] In some embodiments, at least one of the first partition, the second partition, or the third partition includes a plurality of bent portions, and the bent portions have a plurality of fixing holes. The first partition, the second partition, or the third partition is fixed to the inner wall of the box body by bolts passing through the fixing holes.

[0015] In some embodiments, there is a buffer pad between the inner wall of the box body and the bent portion, and the material of the buffer pad includes rubber.

[0016] In some embodiments, it further includes: two fixing portions oppositely arranged along the direction perpendicular to the arrangement direction of the high-pressure area and the low-pressure area. The fixing portions are located between the lower-layer low-pressure area and the lower-layer high-pressure area and are fixed to the inner wall of the box body. Both ends of the radiator are fixed to the fixing portions so that the radiator is suspended in the box body.

[0017] The technical solution provided by the embodiments of the present application has at least the following advantages:

[0018] In the energy storage converter provided by the embodiments of the present application, the box body includes an adjacent high-pressure area and a low-pressure area. The high-pressure area is used to arrange high-power devices, and the low-pressure area is used to arrange low-power devices to improve the integration density of the energy storage converter. The first partition divides the high-pressure area into an upper-layer high-pressure area and a lower-layer high-pressure area arranged up and down. The second partition and the third partition divide the low-pressure area into an upper-layer low-pressure area, a middle-layer low-pressure area, and a lower-layer low-pressure area arranged from top to bottom in sequence. In this way, the space of the high-pressure area and the low-pressure area can be further divided into regions. There is an air inlet on the side of the lower-layer high-pressure area of the box body away from the low-pressure area, and there is an air outlet on the side of the lower-layer low-pressure area of the box body away from the high-pressure area. The radiator is located between the lower-layer low-pressure area and the lower-layer high-pressure area. The cooling air enters from the air inlet, passes through the fan assembly and the radiator, and then exits from the air outlet after reaching the lower-layer low-pressure area, so as to form a one-way flowing first air flow channel. In this way, the high-temperature air after the cooling air cools the radiator is directly discharged through the air outlet and will not continue to circulate in the box body, thereby avoiding the high-temperature air from affecting the heat dissipation of other devices. There are a plurality of ventilation holes on the side of the first partition close to the radiator. The cooling air enters from the air inlet, passes through the fan assembly and the ventilation holes, and flows to the middle-layer low-pressure area, so as to form a one-way flowing second air flow channel. In this way, for the devices arranged in the middle-layer low-pressure area, on the one hand, they are directly arranged on the radiator to dissipate heat through the radiator, and on the other hand, they can also dissipate heat through the second air flow channel formed in the middle-layer low-pressure area, improving the heat dissipation efficiency of the devices in the middle-layer low-pressure area. The air flow rate of the first air flow channel is greater than that of the second air flow channel. In this way, most of the heat generated by the devices on the radiator is dissipated through the first air flow channel. Even if a small part of the heat is transferred to the devices on the side further away from the high-pressure area through the second air flow channel, it will not have too much impact on the heat dissipation of the devices at the tail of the second air flow channel, which is beneficial for the devices on the side further away from the high-pressure area in the middle-layer low-pressure area to also have a good heat dissipation effect. Description of the Drawings

[0019] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute a limitation on the embodiments. Unless otherwise stated, the figures in the drawings do not constitute a scale limitation. To more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of the energy storage converter provided by the embodiment of the present application from one perspective;

[0021] Figure 2 It is a schematic structural diagram of the energy storage converter provided by the embodiment of the present application from another perspective;

[0022] Figure 3 It is a schematic internal structure diagram of an energy storage converter provided by the embodiment of the present application;

[0023] Figure 4 It is a schematic structural diagram of a first partition provided by the embodiment of the present application;

[0024] Figure 5 It is a schematic structural diagram of a fan assembly provided by the embodiment of the present application;

[0025] Figure 6 It is a schematic structural diagram of a second partition provided by the embodiment of the present application;

[0026] Figure 7 It is a schematic structural diagram of a third partition provided by the embodiment of the present application.

[0027] Reference numerals

[0028] 100 - housing; 101 - high - pressure area; 102 - low - pressure area; 103 - upper high - pressure area; 104 - lower high - pressure area; 105 - upper low - pressure area; 106 - middle - layer low - pressure area; 107 - lower low - pressure area; 108 - air inlet; 109 - air outlet; 110 - first partition; 111 - first part; 112 - second part; 113 - third part; 114 - ventilation hole; 120 - second partition; 121 - fourth part; 122 - fifth part; 123 - sixth part; 124 - hollow part; 130 - third partition; 131 - seventh part; 132 - eighth part; 133 - ninth part; 134 - isolation part; 140 - radiator; 150 - fan assembly; 151 - air - inlet net; 152 - fan bracket; 153 - fan; 160 - exhaust hole; 161 - exhaust fan; 170 - pit; 180 - inductor; 190 - bending part; 193 - fixing part. Detailed implementation manner

[0029] As can be seen from the background art, the heat dissipation efficiency of the energy storage converter needs to be improved.

[0030] The embodiment of the present application provides an energy storage converter, which is at least beneficial to improving the heat dissipation efficiency of the energy storage converter.

[0031] In the description of the embodiment of the present application, technical terms such as "first" and "second" are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary - secondary relationship of the indicated technical features.

[0032] In the description of the embodiment of the present application, the meaning of "a plurality of" is more than two, unless otherwise specifically limited.

[0033] Referring to "embodiment" in this article means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0034] In the description of the embodiment of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: there is A, there is both A and B, and there is B, these three situations. In addition, the character " / " in this article generally represents an "or" relationship between the front - and - back associated objects.

[0035] In the description of the embodiments of the present application, technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0036] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0037] In the description of the embodiments of the present application, when a certain component "includes" another component, unless otherwise stated, other components are not excluded, and other components may further be included.

[0038] The terms used in the description of the various embodiments herein are only for describing specific embodiments and are not intended to be limiting. As used in the description of the various embodiments and the appended claims, "component" is also intended to include the plural form unless the context clearly indicates otherwise.

[0039] The following will elaborate on the various embodiments of the present application in conjunction with the drawings. However, those of ordinary skill in the art can understand that in the various embodiments of the present application, many technical details are presented for the better understanding of the present application by the readers. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can still be implemented.

[0040] Figure 1 It is a schematic structural diagram of the energy storage converter provided by the embodiment of the present application from one perspective; Figure 2 It is a schematic structural diagram of the energy storage converter provided by the embodiment of the present application from another perspective; Figure 3 It is a schematic internal structure diagram of an energy storage converter provided by the embodiment of the present application; Figure 4 It is a schematic structural diagram of a first partition provided by the embodiment of the present application. Figure 3For ease of explanation, taking the case where the box body 100 is in a perspective state as an example, the border of the box body 100 and the demarcation line between the high-voltage area 101 and the low-voltage area 102 are shown by a dashed box.

[0041] In the attached drawings provided in this embodiment, the X-axis direction is the width direction of the box body 100 of the energy storage converter, the Y-axis direction is the length direction of the box body 100 of the energy storage converter, and the Z-axis direction is the height direction of the box body 100 of the energy storage converter.

[0042] Reference Figures 1 to 4 , the energy storage converter provided in the embodiment of the present application includes: a box body 100 and a first partition 110, a second partition 120, a third partition 130, a radiator 140, and a fan assembly 150 disposed in the box body 100.

[0043] The box body 100 includes an adjacent high-voltage area 101 and a low-voltage area 102; the first partition 110 is located in the high-voltage area 101, and the first partition 110 divides the high-voltage area 101 into an upper high-voltage area 103 and a lower high-voltage area 104 arranged up and down. One side of the lower high-voltage area 104 of the box body 100 away from the low-voltage area 102 has an air inlet 108; the second partition 120 is located in the low-voltage area 102, and the second partition 120 is arranged on the same layer as the first partition 110; the third partition 130 is located in the low-voltage area 102, and the third partition 130 is located above the second partition 120. The second partition 120 and the third partition 130 divide the low-voltage area 102 into an upper low-voltage area 105, a middle low-voltage area 106, and a lower low-voltage area 107 arranged from top to bottom. One side of the lower low-voltage area 107 of the box body 100 away from the high-voltage area 101 has an air outlet 109; the radiator 140 is located between the lower low-voltage area 107 and the lower high-voltage area 104. One side of the first partition 110 close to the low-voltage area 102 is fixed to the top of the radiator 140, and one side of the second partition 120 close to the high-voltage area 101 is fixed to the top of the radiator 140; the fan assembly 150 is located in the lower high-voltage area 104, and the air outlet direction of the fan assembly 150 faces the radiator 140.

[0044] Among them, the cooling air passes through the fan assembly 150 from the air inlet 108, passes through the radiator 140, and then is discharged from the air outlet 109 after reaching the lower low-voltage area 107, so as to form a first air flow channel. Combining with reference Figure 3 and Figure 4 , one side of the first partition 110 close to the radiator 140 has a plurality of ventilation holes 114. The cooling air flows from the air inlet 108 through the fan assembly 150 and the ventilation holes 114 to the middle low-voltage area 106, so as to form a second air flow channel; the air flow rate of the first air flow channel is greater than that of the second air flow channel.

[0045] In the energy storage converter provided by the embodiment of the present application, the box body 100 includes an adjacent high-voltage area 101 and a low-voltage area 102. The high-voltage area 101 is used to arrange high-power devices, and the low-voltage area 102 is used to arrange low-power devices to improve the integration density of the energy storage converter. The first partition 110 divides the high-voltage area 101 into an upper high-voltage area 103 and a lower high-voltage area 104 arranged up and down. The second partition 120 and the third partition 130 divide the low-voltage area 102 into an upper low-voltage area 105, a middle low-voltage area 106, and a lower low-voltage area 107 arranged in sequence from top to bottom. In this way, the spaces of the high-voltage area 101 and the low-voltage area 102 can be further divided into regions. On the side of the lower high-voltage area 104 of the box body 100 away from the low-voltage area 102, there is an air inlet 108. On the side of the lower low-voltage area 107 of the box body 100 away from the high-voltage area 101, there is an air outlet 109. The radiator 140 is located between the lower low-voltage area 107 and the lower high-voltage area 104. The cooling air passes through the fan assembly 150 from the air inlet 108, passes through the radiator 140, and then discharges from the air outlet 109 after reaching the lower low-voltage area 107 to form a one-way flowing first air flow channel. In this way, the high-temperature air after the cooling air cools the radiator 140 is directly discharged through the air outlet 109 and will not continue to circulate in the box body 100, thereby avoiding the high-temperature air affecting the heat dissipation of other devices. On the side of the first partition 110 close to the radiator 140, there are a plurality of ventilation holes 114. The cooling air flows from the air inlet 108 through the fan assembly 150 and the ventilation holes 114 to the middle low-voltage area 106 to form a one-way flowing second air flow channel. In this way, for the devices arranged in the middle low-voltage area 106, on the one hand, they are directly arranged on the radiator 140 to dissipate heat through the radiator 140, and on the other hand, they can also dissipate heat through the second air flow channel formed by the middle low-voltage area 106, improving the heat dissipation efficiency of the devices in the middle low-voltage area 106. The air flow rate of the first air flow channel is greater than that of the second air flow channel. In this way, most of the heat generated by the devices on the radiator 140 is dissipated through the first air flow channel. Even if a small part of the heat is transferred to the devices on the side farther away from the high-voltage area 101 through the second air flow channel, it will not have too much impact on the heat dissipation of the devices at the tail of the second air flow channel, which is beneficial to the devices on the side of the middle low-voltage area 106 farther away from the high-voltage area 101 to also have a good heat dissipation effect.

[0046] In some embodiments, a switch baffle can be arranged at the ventilation hole, and the switch baffle can control the opening or closing of the ventilation hole. In this way, the required number of ventilation holes can be adjusted according to the ambient temperature of the energy storage converter, and then the air flow rate of the second air flow channel can be adjusted. For example, when the operating temperature is relatively low and the heat dissipation requirement is relatively low, the switch baffles of some ventilation holes can be closed to reduce the air flow rate of the second air flow channel and avoid the problem of abnormal operation caused by the temperature of the device being too low after heat dissipation.

[0047] Combined with referenceFigure 2 and Figure 3 On the side of the middle - layer low - pressure area 106 and / or the upper - layer low - pressure area 105 of the box body 100 away from the high - pressure area 101, there may be at least one exhaust hole 160, and an exhaust fan 161 is arranged on the exhaust hole 160. The exhaust fan 161 on the exhaust hole 160 can facilitate the discharge of the cooling air passing through the second air flow channel, thereby avoiding the accumulation of heat in the box body 100 and improving the heat dissipation efficiency of the energy storage converter.

[0048] In some embodiments, referring to Figure 3 , the upper part of at least one exhaust hole 160 may be located in the upper - layer low - pressure area 105, and the lower part may be located in the middle - layer low - pressure area 106. In this way, the upper - layer low - pressure area 105 and the middle - layer low - pressure area 106 can share an exhaust fan 161 to achieve unidirectional air flow, reduce the installation cost of the exhaust fan 161, and at the same time improve the heat dissipation efficiency of the devices in the upper - layer low - pressure area 105 and the middle - layer low - pressure area 106.

[0049] In some embodiments, the exhaust fan 161 extracts the gas in the upper - layer low - pressure area 105 to form a third air flow channel, and the air flow rate of the third air flow channel is less than that of the second air flow channel. In this way, devices with a higher heat generation rate, such as power boards or DC - Link capacitors, can be arranged in the middle - layer low - pressure area 106, and devices with a lower heat generation rate, such as battery management systems, control boards or auxiliary capacitor boards, can be arranged in the upper - layer low - pressure area 105. By partitioning and arranging devices with different heat generation rates, it is beneficial to the effective heat dissipation of each layer of devices.

[0050] Furthermore, when the upper - layer low - pressure area 105 and the middle - layer low - pressure area 106 can share an exhaust fan 161, for the same exhaust hole 160, the area of the exhaust hole 160 in the middle - layer low - pressure area 106 is larger than the area of the exhaust hole 160 in the upper - layer low - pressure area 105, so as to achieve that the air flow rate of the third air flow channel is less than that of the second air flow channel.

[0051] Referring to Figure 1 , pits 170 may be arranged on both sides of the box body 100 in the width direction, which can facilitate the handling of the energy storage converter.

[0052] Figure 5 This is a schematic structural diagram of a fan assembly provided by an embodiment of the present application.

[0053] Combined with reference 3 and Figure 5, the fan assembly 150 includes: an air inlet net 151, which is detachably fixed to the air inlet 108; a fan bracket 152, which is detachably fixed to the air inlet net 151; and a fan 153, which is detachably fixed to the fan bracket 152. In this way, the fan 153 can be detachably fixed to the box body 100 through the fan bracket 152 and the air inlet net 151. When the fan 153 needs to be maintained, the air inlet net 151 at the air inlet 108 can be directly removed to extract the fan 153, without the need to layer by layer disassemble the third partition 130, the second partition 120, and the first partition 110, and the repair and maintenance of the fan 153 can be realized.

[0054] In this embodiment, take the example that multiple fans 153 are fixed through the same fan bracket 152 and the same air inlet net 151; in other embodiments, the air inlet net and the fan bracket can be set to be multiple, so as to form multiple relatively independent fan assemblies, and the multiple fan assemblies are respectively fixed to the box body through their respective air inlet nets. In this way, when repairing or maintaining a single fan subsequently, it is not necessary to disassemble other fan assemblies.

[0055] In some embodiments, the bottom of the box body may have a guide rail (not shown in the figure), and the fan bracket is movably fixed on the guide rail. In this way, when the fan assembly is installed or disassembled through the air inlet of the box body, it can be directionally moved through the guide rail, which is beneficial to improving the installation efficiency of the fan assembly and the box body, and is also beneficial to improving the stability of the fan assembly installed in the box body.

[0056] Reference Figure 4 , the first partition 110 may include a first part 111, a second part 112, and a third part 113 that are connected in sequence. The height of the first part 111 relative to the bottom surface of the box body is higher than the height of the third part 113 relative to the bottom surface of the box body. One side of the third part 113 away from the second part 112 is fixed to the top of the radiator, and the ventilation hole 114 is located on the second part 112. In this way, the first part 111 and the third part 113 are arranged in a staggered layer, so that the cooling air gathers at the second part 112, and the ventilation hole 114 is arranged on the second part 112, which is beneficial to the efficient flow of the cooling air through the ventilation hole 114 to the middle-layer low-pressure area.

[0057] Figure 6 It is a schematic structural diagram of a second partition provided by an embodiment of the present application.

[0058] Reference Figure 6 , the second partition 120 may also include a fourth part 121, a fifth part 122, and a sixth part 123 that are connected in sequence. The height of the fourth part 121 relative to the bottom surface of the box body is higher than the height of the fifth part 122 relative to the bottom surface of the box body. One side of the sixth part 123 away from the fifth part 122 is fixed to the top of the radiator.

[0059] Combined reference Figure 3 and Figure 6 As shown, the lower low-voltage area 107 may include a plurality of inductors 180, the second partition 120 may include a hollowed-out portion 124, and the orthographic projection of the inductor 180 on the bottom surface of the box body 100 is located within the orthographic projection of the hollowed-out portion 124 on the bottom surface of the box body 100. The inductor 180 has a relatively large volume. Arranging it in the lower low-voltage area 107 can help improve space utilization. Providing the hollowed-out portion 124 on the second partition 120 can prevent electromagnetic interference between the second partition 120 and the inductor 180.

[0060] Figure 7 FIG. is a schematic structural diagram of a third partition provided by an embodiment of the present application.

[0061] Reference Figure 7 As shown, the third partition 130 may include a seventh portion 131, an eighth portion 132, and a ninth portion 133 that are connected in sequence. The height of the seventh portion 131 relative to the bottom surface of the box body is higher than the height of the ninth portion 133 relative to the bottom surface of the box body. In this way, the staggered seventh portion 131 and ninth portion 133 are beneficial for setting corresponding placement positions for devices of different heights, so as to improve the space utilization rate of the upper low-voltage area.

[0062] Combined reference Figure 3 and Figure 7 As shown, on the side of the seventh portion 131 and the ninth portion 133 close to the high-voltage area 101, they are bent towards the bottom surface of the box body 100 to form a partition portion 134, and the partition portion 134 has mesh holes arranged in an array. The partition portion 134 can be used to isolate the devices between the high-voltage area 101 and the low-voltage area 102. The mesh holes on the partition portion 134 can form electromagnetic shielding to prevent electromagnetic interference between the devices in the high-voltage area 101 and the devices in the low-voltage area 102.

[0063] In some embodiments, the orthographic projection of the seventh portion 131 on the bottom surface of the box body partially overlaps with the orthographic projection of the second partition 120 on the bottom surface of the box body, and the orthographic projection of the ninth portion 133 on the bottom surface of the box body does not overlap with the orthographic projection of the second partition 120 on the bottom surface of the box body. In this way, the height of some devices on the second partition 120 can exceed the distance between the second partition 120 and the third partition 130, so that larger devices can be arranged on the second partition 120.

[0064] In some embodiments, at least one of the first partition 110, the second partition 120, or the third partition 130 includes a plurality of bending portions 190, and the bending portions 190 have a plurality of fixing holes. The first partition 110, the second partition 120, or the third partition 130 is fixed to the inner wall of the box body 100 by bolts passing through the fixing holes.

[0065] In other embodiments, a plurality of supporting parts are provided on the inner wall of the box body. The supporting part includes a first supporting part and a second supporting part which are connected to each other. The first supporting part is parallel to the side wall surface of the box body, and the second supporting part is parallel to the bottom surface of the box body. The first supporting part is used for fixing to the side wall of the box body, and the second supporting part is used for fixing to the first partition, the second partition or the third partition.

[0066] In some embodiments, a buffer pad (not shown in the figure) is provided between the inner wall of the box body and the bending part. The material of the buffer pad includes rubber. The buffer pad can avoid the problem that the box body, the first partition, the second partition or the third partition are deformed due to mutual extrusion after thermal expansion and contraction.

[0067] With reference to Figures 1 to 3 , the energy storage converter may further include: two fixing parts 193 which are oppositely arranged along the direction perpendicular to the arrangement direction of the high-voltage area 101 and the low-voltage area 102. The fixing part 193 is located between the lower-layer low-voltage area 107 and the lower-layer high-voltage area 104 and is fixed to the inner wall of the box body 100. Both ends of the radiator 140 are fixed to the fixing part 193, so that the radiator 140 is suspended in the box body 100. Suspending the radiator 140 in the box body 100 through the fixing part 193 can facilitate the bottom of the radiator 140 to pass through the cooling air, thereby improving the heat dissipation effect of the radiator 140.

[0068] In the energy storage converter provided by the embodiment of the present application, the box body 100 includes an adjacent high-voltage area 101 and a low-voltage area 102. The high-voltage area 101 is used to arrange high-power devices, and the low-voltage area 102 is used to arrange low-power devices to improve the integration density of the energy storage converter. The first partition 110 divides the high-voltage area 101 into an upper high-voltage area 103 and a lower high-voltage area 104 arranged up and down. The second partition 120 and the third partition 130 divide the low-voltage area 102 into an upper low-voltage area 105, a middle low-voltage area 106, and a lower low-voltage area 107 arranged from top to bottom in sequence. In this way, the spaces of the high-voltage area 101 and the low-voltage area 102 can be further divided into regions. One side of the lower high-voltage area 104 of the box body 100 away from the low-voltage area 102 has an air inlet 108, and one side of the lower low-voltage area 107 of the box body 100 away from the high-voltage area 101 has an air outlet 109. The radiator 140 is located between the lower low-voltage area 107 and the lower high-voltage area 104. The cooling air passes through the fan assembly 150 from the air inlet 108, passes through the radiator 140, reaches the lower low-voltage area 107, and then is discharged from the air outlet 109 to form a one-way flowing first air flow channel. In this way, the high-temperature air after the cooling air cools the radiator 140 is directly discharged through the air outlet 109 and will not continue to circulate in the box body 100, thereby avoiding the high-temperature air from affecting the heat dissipation of other devices. One side of the first partition 110 close to the radiator 140 has a plurality of ventilation holes 114. The cooling air flows from the air inlet 108 through the fan assembly 150 and the ventilation holes 114 to the middle low-voltage area 106 to form a one-way flowing second air flow channel. In this way, for the devices arranged in the middle low-voltage area 106, on the one hand, they are directly arranged on the radiator 140 to dissipate heat through the radiator 140, and on the other hand, they can also dissipate heat through the second air flow channel formed by the middle low-voltage area 106, improving the heat dissipation efficiency of the devices in the middle low-voltage area 106. The air flow rate of the first air flow channel is greater than that of the second air flow channel. In this way, most of the heat generated by the devices on the radiator 140 is dissipated through the first air flow channel. Even if a small part of the heat is transferred to the devices on the side farther away from the high-voltage area 101 through the second air flow channel, it will not have too much impact on the heat dissipation of the devices at the end of the second air flow channel, which is beneficial to the devices on the side farther away from the high-voltage area 101 in the middle low-voltage area 106 to also have a good heat dissipation effect.

[0069] Those of ordinary skill in the art can understand that the above embodiments are specific embodiments for implementing the present application. In actual applications, various changes can be made in form and details without departing from the spirit and scope of the present application. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application should be subject to the scope defined by the claims.

Claims

1. A energy storage converter, characterized in that, Comprising: A box body, the box body including an adjacent high-pressure area and a low-pressure area; A first partition, the first partition being located in the high-pressure area, the first partition separating the high-pressure area into an upper high-pressure area and a lower high-pressure area arranged vertically, and one side of the lower high-pressure area of the box body away from the low-pressure area having an air inlet; A second partition, the second partition being located in the low-pressure area, the second partition being arranged on the same layer as the first partition, the lower part of the second partition and the box body forming a lower low-pressure area, and one side of the lower low-pressure area of the box body away from the high-pressure area having an air outlet; A radiator, the radiator being located between the lower low-pressure area and the lower high-pressure area, one side of the first partition close to the low-pressure area being fixed to the top of the radiator, and one side of the second partition close to the high-pressure area being fixed to the top of the radiator; A fan assembly, the fan assembly being located in the lower high-pressure area, and the air outlet direction of the fan assembly facing the radiator; Wherein, one side of the first partition close to the radiator has a plurality of ventilation holes.

2. The energy storage converter according to claim 1, wherein Further comprising: A third partition, the third partition being located in the low-pressure area and above the second partition, the second partition and the third partition separating the low-pressure area into an upper low-pressure area, a middle low-pressure area, and the lower low-pressure area arranged in sequence from top to bottom.

3. The energy storage converter according to claim 2, characterized in that, One side of the middle low-pressure area and / or the upper low-pressure area of the box body away from the high-pressure area has at least one exhaust hole, and an exhaust fan is arranged on the exhaust hole.

4. The energy storage converter according to claim 3, characterized in that The upper part of at least one of the air outlets is located in the upper low-pressure area, and the lower part is located in the middle low-pressure area.

5. The energy storage converter according to claim 1, characterized in that, The fan assembly includes: An air inlet net, the air inlet net being detachably fixed to the air inlet; A fan bracket, the fan bracket being detachably fixed to the air inlet net; A fan, the fan being detachably fixed to the fan bracket.

6. The energy storage converter according to claim 5, characterized in that, The bottom of the box body has a guide rail, and the fan bracket is movably fixed on the guide rail.

7. The energy storage converter according to claim 1, wherein The first partition includes a first part, a second part, and a third part connected in sequence, the height of the first part relative to the bottom surface of the box body being higher than the height of the third part relative to the bottom surface of the box body, one side of the third part away from the second part being fixed to the top of the radiator, and the ventilation holes being located on the second part.

8. The energy storage converter according to claim 1, characterized in that At least one of the first partition or the second partition includes a plurality of bent portions, the bent portions having a plurality of fixing holes, and the first partition or the second partition is fixed to the inner wall of the box body by bolts passing through the fixing holes.

9. The energy storage converter according to claim 8, wherein, A buffer pad is provided between the inner wall of the box body and the bent portion, and the material of the buffer pad includes rubber.

10. The energy storage converter according to claim 1, characterized in that, Further comprising: Two fixing parts arranged oppositely along the direction perpendicular to the arrangement direction of the high-pressure area and the low-pressure area, the fixing parts being located between the lower low-pressure area and the lower high-pressure area and fixed to the inner wall of the box body, and both ends of the radiator being fixed to the fixing parts so that the radiator is suspended in the box body.

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