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

Technical Field

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

[0002] The high-voltage box and the power conversion system (PCS) of the energy storage system are the core components of the energy storage system. The PCS is the core component that realizes the bidirectional flow of electric energy between the energy storage system and the power grid. It is used to control the charging and discharging process of the battery and perform AC-DC conversion. The high-voltage box is equipped with a control circuit to control the charging and discharging process to ensure the safety and stability of the energy storage system. The combined energy storage converter with the control circuit and PCS integrated into one can adopt a split-cavity design, with higher-power electronic devices located in the high-voltage area and external fans, heat exchangers and inductors (low-power devices) located in the low-voltage area to improve the integration density of the energy storage converter.

[0003] At present, the heat dissipation system in the energy storage converter blows cooling air into the box through a fan to cool down the various components in the energy storage converter. However, the cooling air circulates in the box, and the temperature of the cooling air rises after passing through the components with higher temperatures. The heat dissipation efficiency of the heated cooling air when cooling other components is significantly reduced. Summary of the invention

[0004] The embodiment of the present application provides an energy storage converter, which at least helps to improve the heat dissipation efficiency of the energy storage converter.

[0005] According to some embodiments of the present application, on the one hand, the embodiments of the present application provide an energy storage inverter, including: a box body, the box body including a high-pressure zone and a low-pressure zone arranged adjacent to each other; a first partition, the first partition is located in the high-pressure zone, the first partition divides the high-pressure zone into an upper high-pressure zone and a lower high-pressure zone arranged up and down, and the lower high-pressure zone of the box body has an air inlet on the side away from the low-pressure zone; a second partition, the second partition is located in the low-pressure zone, and the second partition is arranged on the same layer as the first partition; a third partition, the third partition is located in the low-pressure zone, and the third partition is located above the second partition, the second partition and the third partition divide the low-pressure zone into an upper low-pressure zone, a middle low-pressure zone and a lower low-pressure zone arranged in sequence from top to bottom, and the lower low-pressure zone of the box body is away from the high-pressure zone. The first baffle plate has an air outlet on one side; a radiator, the radiator is located between the lower low-pressure zone and the lower high-pressure zone, the side of the first baffle plate close to the low-pressure zone is fixed to the top of the radiator, and the side of the second baffle plate close to the high-pressure zone is fixed to the top of the radiator; a fan assembly, the fan assembly is located in the lower high-pressure zone, and the air outlet direction of the fan assembly is toward the radiator; wherein, cooling air passes through the fan assembly from the air inlet through the radiator to the lower low-pressure zone and is discharged from the air outlet to form a first airflow channel; the first baffle plate has a plurality of ventilation holes on one side 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-pressure zone to form a second airflow channel; the airflow rate of the first airflow channel is greater than the airflow rate of the second airflow channel.

[0006] In some embodiments, the middle low-pressure area and / or the upper low-pressure area of ​​the box body has at least one exhaust hole on a side away from the high-pressure area, and an exhaust fan is arranged on the exhaust hole.

[0007] In some embodiments, an upper portion of at least one air outlet is located in an upper low-pressure zone, and a lower portion is located in a middle low-pressure zone.

[0008] In some embodiments, the exhaust fan draws out the gas in the upper low-pressure zone to form a third wind flow channel, and the wind flow rate of the third wind flow channel is lower than the wind flow rate of the second wind flow channel.

[0009] In some embodiments, the fan assembly includes: an air inlet mesh, which is detachably fixed to the air inlet; a fan bracket, which is detachably fixed to the air inlet mesh; and a fan, which is detachably fixed to the fan bracket.

[0010] In some embodiments, the bottom of the box has a guide rail, and the fan bracket is movably fixed on the guide rail.

[0011] In some embodiments, 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 is higher than the height of the third part relative to the bottom surface of the box body, the side of the third part away from the second part is fixed to the top of the radiator, and the ventilation hole is located on the second part.

[0012] In some embodiments, at least one of the first partition, the second partition or the third partition includes multiple bending portions, and the bending portions have multiple fixing holes. The first partition, the second partition or the third partition is fixed to the inner wall of the box by bolts passing through the fixing holes.

[0013] In some embodiments, a buffer pad is provided between the inner wall of the box and the bent portion, and the material of the buffer pad includes rubber.

[0014] In some embodiments, it also includes: two fixing parts arranged opposite to each other along a direction perpendicular to the arrangement direction of the high-pressure zone and the low-pressure zone, the fixing parts are located between the lower low-pressure zone and the lower high-pressure zone, and are fixed to the inner wall of the box, and both ends of the radiator are fixed on the fixing parts so that the radiator is suspended in the box.

[0015] The technical solution provided by the embodiments of the present application has at least the following advantages: In the energy storage converter provided in the embodiment of the present application, the box includes a high-pressure area and a low-pressure area arranged adjacent to each other, the high-pressure area is used to set high-power devices, and the low-pressure area is used to set low-power devices, so as to improve the integration density of the energy storage converter. The first partition separates the high-pressure area into an upper high-pressure area and a lower high-pressure area arranged up and down, and the second partition and the third partition separate the low-pressure area into an upper low-pressure area, a middle low-pressure area and a lower low-pressure area arranged sequentially from top to bottom, so that the space of the high-pressure area and the low-pressure area can be further divided into regions. The lower high-pressure area of ​​the box has an air inlet on the side away from the low-pressure area, and the lower low-pressure area of ​​the box has an air outlet on the side away from the high-pressure area. The radiator is located between the lower low-pressure area and the lower high-pressure area. The cooling air passes through the fan assembly from the air inlet through the radiator to the lower low-pressure area and then is discharged from the air outlet to form a first air flow channel of unidirectional flow, so that 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, thereby avoiding the high-temperature air from affecting the heat dissipation of other devices. The first partition has a plurality of ventilation holes on one side close to the radiator, and the cooling air flows from the air inlet through the fan assembly and the ventilation holes to the middle-layer low-pressure zone to form a second wind flow channel with unidirectional flow. In this way, the device set in the middle-layer low-pressure zone is directly set on the radiator to dissipate heat through the radiator, and can also dissipate heat through the second wind flow channel formed in the middle-layer low-pressure zone, thereby improving the heat dissipation efficiency of the device in the middle-layer low-pressure zone. The wind flow rate of the first wind flow channel is greater than the wind flow rate of the second wind flow channel. In this way, most of the heat generated by the device on the radiator is dissipated through the first wind flow channel. Even if a small amount of heat is transferred to the device on the side farther away from the high-pressure zone through the second wind flow channel, it will not cause too much impact on the heat dissipation of the device at the tail of the second wind flow channel, thereby facilitating the device in the middle-layer low-pressure zone farther away from the high-pressure zone to have a better heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplified descriptions do not constitute a limitation on the embodiments. Unless otherwise specified, the pictures in the drawings do not constitute a scale limitation. In order to more clearly illustrate the embodiments of the present application or the technical solutions in the traditional technology, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of the energy storage converter provided in an embodiment of the present application at one viewing angle; Figure 2 A schematic diagram of the structure of the energy storage converter provided in an embodiment of the present application from another perspective; Figure 3 A schematic diagram of the internal structure of an energy storage converter is provided for an embodiment of the present application; Figure 4 A schematic diagram of the structure of a first partition provided in an embodiment of the present application; Figure 5 A schematic diagram of the structure of a fan assembly provided in an embodiment of the present application; Figure 6 A schematic diagram of the structure of a second partition provided in an embodiment of the present application; Figure 7 A schematic structural diagram of a third partition provided in an embodiment of the present application.

[0018] Reference numerals 100-box; 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 low pressure area; 107-lower low pressure area; 108-air inlet; 109-air outlet; 110-first baffle; 111-first part; 112-second part; 113-third part; 114-ventilation hole; 120-second baffle; 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-isolating part; 140-heat sink; 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 DESCRIPTION

[0019] It can be seen from the background technology that the heat dissipation efficiency of the energy storage converter needs to be improved.

[0020] The embodiment of the present application provides an energy storage converter, which at least helps to improve the heat dissipation efficiency of the energy storage converter.

[0021] In the description of the embodiments 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 number, specific order or primary and secondary relationship of the indicated technical features.

[0022] In the description of the embodiments of the present application, “plurality” means more than two, unless otherwise clearly and specifically defined.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations 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. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0025] In the description of the embodiments of the present application, technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0026] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of 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 the specific circumstances.

[0027] 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 be further included.

[0028] The terms used in the description of the various described embodiments herein are used only to describe specific embodiments and are not intended to be limiting. As used in the description of the various described embodiments and the appended claims, "components" are also intended to include plural forms unless the context clearly indicates otherwise.

[0029] The following will describe the various embodiments of the present application in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present application, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solution claimed in the present application can be implemented.

[0030] Figure 1 A schematic diagram of the structure of the energy storage converter provided in an embodiment of the present application at one viewing angle; Figure 2 A schematic diagram of the structure of the energy storage converter provided in an embodiment of the present application from another perspective; Figure 3 A schematic diagram of the internal structure of an energy storage converter is provided for an embodiment of the present application; Figure 4 This is a schematic diagram of the structure of a first partition provided in an embodiment of the present application. Figure 3 For the convenience of explanation, the box body 100 is in a perspective state as an example, and the frame of the box body 100 and the boundary line between the high pressure area 101 and the low pressure area 102 are shown in a dotted frame.

[0031] In the drawings provided in this embodiment, the X-axis direction is the width direction of the case 100 of the energy storage inverter, the Y-axis direction is the length direction of the case 100 of the energy storage inverter, and the Z-axis direction is the height direction of the case 100 of the energy storage inverter.

[0032] refer to 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 arranged in the box body 100.

[0033] The box body 100 includes a high-pressure area 101 and a low-pressure area 102 that are adjacent to each other; a first partition 110 is located in the high-pressure area 101, and the first partition 110 divides the high-pressure area 101 into an upper high-pressure area 103 and a lower high-pressure area 104 that are arranged up and down, and the lower high-pressure area 104 of the box body 100 has an air inlet 108 on a side away from the low-pressure area 102; a second partition 120 is located in the low-pressure area 102, and the second partition 120 is arranged on the same layer as the first partition 110; a third partition 130 is located in the low-pressure area 102, and the third partition 130 is located above the second partition 120, and the second partition 120 and the third partition 130 separate the low-pressure area 102 is divided into an upper low-pressure zone 105, a middle low-pressure zone 106 and a lower low-pressure zone 107 which are arranged in sequence from top to bottom. The lower low-pressure zone 107 of the box body 100 has an air outlet 109 on the side away from the high-pressure zone 101; the radiator 140 is located between the lower low-pressure zone 107 and the lower high-pressure zone 104, the first partition 110 is fixed to the top of the radiator 140 on the side close to the low-pressure zone 102, and the second partition 120 is fixed to the top of the radiator 140 on the side close to the high-pressure zone 101; the fan assembly 150 is located in the lower high-pressure zone 104, and the air outlet direction of the fan assembly 150 is toward the radiator 140.

[0034] The cooling air passes through the fan assembly 150 from the air inlet 108, through the radiator 140, to the lower low-pressure area 107, and then is discharged from the air outlet 109 to form a first air flow channel. Figure 3 and Figure 4 The first partition 110 has a plurality of ventilation holes 114 on one side close to the radiator 140. The cooling air flows from the air inlet 108 through the fan assembly 150 and the ventilation holes 114 to the middle-layer low-pressure zone 106 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.

[0035] In the energy storage converter provided in the embodiment of the present application, the box 100 includes a high-voltage area 101 and a low-voltage area 102 arranged adjacent to each other, the high-voltage area 101 is used to set high-power devices, and the low-voltage area 102 is used to set low-power devices to improve the integration density of the energy storage converter. The first partition 110 separates the high-voltage area 101 into an upper high-voltage area 103 and a lower high-voltage area 104 arranged up and down, and the second partition 120 and the third partition 130 separate 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 sequentially from top to bottom, so that the space of the high-voltage area 101 and the low-voltage area 102 can be further divided into regions. The lower high-pressure area 104 of the box body 100 has an air inlet 108 on the side away from the low-pressure area 102, and the lower low-pressure area 107 of the box body 100 has an air outlet 109 on the side away from the high-pressure area 101. The radiator 140 is located between the lower low-pressure area 107 and the lower high-pressure area 104. The cooling air passes through the fan assembly 150 from the air inlet 108 through the radiator 140 to the lower low-pressure area 107 and then is discharged from the air outlet 109 to form a first airflow channel with unidirectional flow. 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 wind from affecting the heat dissipation of other devices. The first partition 110 has a plurality of ventilation holes 114 on one side close to the radiator 140. The cooling air flows from the air inlet 108 through the fan assembly 150 and the ventilation holes 114 to the middle-layer low-pressure zone 106 to form a second wind flow channel of unidirectional flow. In this way, the devices arranged in the middle-layer low-pressure zone 106 are directly arranged on the radiator 140 to dissipate heat through the radiator 140, and can also dissipate heat through the second wind flow channel formed in the middle-layer low-pressure zone 106, thereby improving the heat dissipation efficiency of the devices in the middle-layer low-pressure zone 106. The wind flow rate of the first wind flow channel is greater than the wind flow rate of the second wind flow channel. In this way, most of the heat generated by the devices on the radiator 140 is dissipated through the first wind flow channel. Even if a small amount of heat is transferred to the devices on the side farther away from the high-pressure zone 101 through the second wind flow channel, it will not cause too much influence on the heat dissipation of the devices at the tail of the second wind flow channel, thereby facilitating the devices in the middle-layer low-pressure zone 106 that are farther away from the high-pressure zone 101 to have a better heat dissipation effect.

[0036] In some embodiments, a switch baffle can be provided at the vent hole, and the switch baffle can control the opening or closing of the vent hole. In this way, the number of vent holes required can be adjusted according to the ambient temperature of the energy storage converter, and the airflow rate of the second airflow channel can be adjusted. For example, when the operating temperature is low, the heat dissipation demand is low, and the switch baffles of some vent holes can be closed to reduce the airflow rate of the second airflow channel to avoid the problem of abnormal use caused by the low temperature of the device after heat dissipation.

[0037] Combined with reference Figure 2 and Figure 3 The middle low-pressure area 106 and / or the upper low-pressure area 105 of the box body 100 may have at least one exhaust hole 160 on the side away from the high-pressure area 101, and an exhaust fan 161 is provided on the exhaust hole 160. The exhaust fan 161 on the exhaust hole 160 can facilitate the exhaust of 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.

[0038] In some embodiments, reference Figure 3 , the upper part of at least one exhaust hole 160 can be located in the upper low-pressure zone 105, and the lower part can be located in the middle low-pressure zone 106. In this way, the upper low-pressure zone 105 and the middle low-pressure zone 106 can share an exhaust fan 161 to achieve unidirectional airflow, thereby reducing the installation cost of the exhaust fan 161 and improving the heat dissipation efficiency of the components in the upper low-pressure zone 105 and the middle low-pressure zone 106.

[0039] In some embodiments, the exhaust fan 161 extracts the gas from the upper low-pressure area 105 to form a third wind flow channel, and the wind flow rate of the third wind flow channel is less than the wind flow rate of the second wind flow channel. In this way, devices with higher heat generation rates, such as power boards or DC-Link capacitors, etc., can be set in the middle low-pressure area 106, and devices with lower heat generation rates, such as battery management systems, control boards, or auxiliary capacitor boards, etc., can be set in the upper low-pressure area 105. By arranging devices with different heat generation rates in different areas, it is beneficial to effectively dissipate heat from devices at each layer.

[0040] Furthermore, when the upper low-pressure zone 105 and the middle low-pressure zone 106 can share an exhaust fan 161, for the same exhaust hole 160, the area of ​​the exhaust hole 160 located in the middle low-pressure zone 106 is larger than the area of ​​the exhaust hole 160 located in the upper low-pressure zone 105, thereby achieving that the wind flow rate of the third airflow channel is lower than the wind flow rate of the second airflow channel.

[0041] refer to Figure 1 The box body 100 may be provided with pits 170 on both sides along the width direction, which can facilitate the transportation of the energy storage converter.

[0042] Figure 5 A schematic structural diagram of a fan assembly provided in an embodiment of the present application.

[0043] Combined with reference 3 and Figure 5The 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 fan 153 can be directly removed by disassembling the air inlet net 151 at the air inlet 108, and the fan 153 can be repaired and maintained without disassembling the third partition 130, the second partition 120 and the first partition 110 layer by layer.

[0044] In this embodiment, it is taken as an example that multiple fans 153 are fixed by 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 multiple, so as to constitute multiple independent fan assemblies, and the multiple fan assemblies are respectively fixed to the box body through their own air inlet nets. In this way, when a single fan is subsequently repaired or maintained, there is no need to disassemble other fan assemblies.

[0045] In some embodiments, the bottom of the box may have a guide rail (not shown in the figure), and the fan bracket may be movably fixed on the guide rail. In this way, when the fan assembly is installed or removed through the air inlet of the box, it can be directed by the guide rail, which is beneficial to improve the installation efficiency of the fan assembly and the box, and also to improve the stability of the fan assembly installed in the box.

[0046] refer to Figure 4 The first partition 110 may include a first portion 111, a second portion 112, and a third portion 113 connected in sequence, the height of the first portion 111 relative to the bottom of the box body is higher than the height of the third portion 113 relative to the bottom of the box body, the side of the third portion 113 away from the second portion 112 is fixed to the top of the radiator, and the vent 114 is located on the second portion 112. In this way, the first portion 111 and the third portion 113 are arranged in staggered layers, so that the cooling wind gathers at the second portion 112, and the vent 114 is arranged on the second portion 112, which is conducive to the cooling wind efficiently flowing to the middle layer low pressure area through the vent 114.

[0047] Figure 6 A schematic structural diagram of a second partition provided in an embodiment of the present application.

[0048] refer to Figure 6 The second partition 120 may also include a fourth part 121, a fifth part 122 and a sixth part 123 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, and the sixth part 123 is fixed to the top of the radiator on the side away from the fifth part 122.

[0049] Combined with reference Figure 3 and Figure 6 The lower low-voltage area 107 may include a plurality of inductors 180, the second partition 120 may include a hollow 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 hollow portion 124 on the bottom surface of the box body 100. The inductor 180 is relatively large in size, and being arranged in the lower low-voltage area 107 can help improve space utilization, and the hollow portion 124 is arranged on the second partition 120 to avoid electromagnetic interference between the second partition 120 and the inductor 180.

[0050] Figure 7 A schematic structural diagram of a third partition provided in an embodiment of the present application.

[0051] refer to Figure 7 The third partition plate 130 may include a seventh portion 131, an eighth portion 132 and a ninth portion 133 connected in sequence, and the height of the seventh portion 131 relative to the bottom of the box is higher than the height of the ninth portion 133 relative to the bottom of the box. In this way, the seventh portion 131 and the ninth portion 133 arranged in staggered layers are conducive to setting corresponding placement positions for devices of different heights, so as to improve the space utilization rate of the upper low-pressure area.

[0052] Combined with reference Figure 3 and Figure 7 The seventh portion 131 and the ninth portion 133 are bent toward the bottom surface of the box 100 on one side close to the high voltage region 101 to form an isolation portion 134, and the isolation portion 134 has mesh holes arranged in an array. The isolation portion 134 can be used to isolate the devices between the high voltage region 101 and the low voltage region 102, and the mesh holes on the isolation portion 134 can form an electromagnetic shield to prevent electromagnetic interference between the devices in the high voltage region 101 and the devices in the low voltage region 102.

[0053] In some embodiments, the orthographic projection of the seventh portion 131 on the bottom surface of the box partially overlaps with the orthographic projection of the second partition 120 on the bottom surface of the box, and the orthographic projection of the ninth portion 133 on the bottom surface of the box does not overlap with the orthographic projection of the second partition 120 on the bottom surface of the box. 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 a larger device can be placed on the second partition 120.

[0054] 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, the bending portions 190 have a plurality of fixing holes, and 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.

[0055] In other embodiments, the inner wall of the box is provided with a plurality of support parts, the support parts include a first support part and a second support part connected to each other, the first support part is parallel to the side wall surface of the box, the second support part is parallel to the bottom surface of the box, the first support part is used to be fixed to the side wall of the box, and the second support part is used to be fixed to the first partition, the second partition or the third partition.

[0056] In some embodiments, a buffer pad (not shown in the figure) is provided between the inner wall of the box and the bent portion, and the material of the buffer pad includes rubber. The buffer pad can prevent the box, the first partition, the second partition or the third partition from being deformed due to mutual compression caused by thermal expansion and contraction of the box, the first partition, the second partition or the third partition.

[0057] Combined with reference Figures 1 to 3 The energy storage converter may further include: two fixing parts 193 arranged opposite to each other in a direction perpendicular to the arrangement direction of the high-pressure area 101 and the low-pressure area 102, the fixing part 193 is located between the lower low-pressure area 107 and the lower high-pressure area 104, and is fixed to the inner wall of the box 100, and both ends of the radiator 140 are fixed to the fixing parts 193, so that the radiator 140 is suspended in the box 100. Suspending the radiator 140 in the box 100 through the fixing parts 193 can facilitate the cooling air to pass through the bottom of the radiator 140, thereby improving the heat dissipation effect of the radiator 140.

[0058] In the energy storage converter provided in the embodiment of the present application, the box 100 includes a high-voltage area 101 and a low-voltage area 102 arranged adjacent to each other, the high-voltage area 101 is used to set high-power devices, and the low-voltage area 102 is used to set low-power devices to improve the integration density of the energy storage converter. The first partition 110 separates the high-voltage area 101 into an upper high-voltage area 103 and a lower high-voltage area 104 arranged up and down, and the second partition 120 and the third partition 130 separate 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 sequentially from top to bottom, so that the space of the high-voltage area 101 and the low-voltage area 102 can be further divided into regions. The lower high-pressure area 104 of the box body 100 has an air inlet 108 on the side away from the low-pressure area 102, and the lower low-pressure area 107 of the box body 100 has an air outlet 109 on the side away from the high-pressure area 101. The radiator 140 is located between the lower low-pressure area 107 and the lower high-pressure area 104. The cooling air passes through the fan assembly 150 from the air inlet 108 through the radiator 140 to the lower low-pressure area 107 and then is discharged from the air outlet 109 to form a first airflow channel with unidirectional flow. 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 wind from affecting the heat dissipation of other devices. The first partition 110 has a plurality of ventilation holes 114 on one side close to the radiator 140. The cooling air flows from the air inlet 108 through the fan assembly 150 and the ventilation holes 114 to the middle-layer low-pressure zone 106 to form a second wind flow channel of unidirectional flow. In this way, the devices arranged in the middle-layer low-pressure zone 106 are directly arranged on the radiator 140 to dissipate heat through the radiator 140, and can also dissipate heat through the second wind flow channel formed in the middle-layer low-pressure zone 106, thereby improving the heat dissipation efficiency of the devices in the middle-layer low-pressure zone 106. The wind flow rate of the first wind flow channel is greater than the wind flow rate of the second wind flow channel. In this way, most of the heat generated by the devices on the radiator 140 is dissipated through the first wind flow channel. Even if a small amount of heat is transferred to the devices on the side farther away from the high-pressure zone 101 through the second wind flow channel, it will not cause too much influence on the heat dissipation of the devices at the tail of the second wind flow channel, thereby facilitating the devices in the middle-layer low-pressure zone 106 that are farther away from the high-pressure zone 101 to have a better heat dissipation effect.

[0059] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present application, and in practical applications, various changes may be made to the embodiments in form and detail without departing from the spirit and scope of the present application. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present application, and therefore the scope of protection of the present application shall be subject to the scope defined in the claims.

Claims

1. An energy storage converter, characterized in that: include: A box body, the box body comprising a high-pressure area and a low-pressure area arranged adjacent to each other; a first partition, the first partition being located in the high-pressure area, the first partition dividing the high-pressure area into an upper high-pressure area and a lower high-pressure area arranged one above the other, the lower high-pressure area of ​​the box having an air inlet on a side away from the low-pressure area; A second partition, the second partition is located in the low-pressure area, and the second partition is arranged on the same layer as the first partition; a third partition, the third partition being located in the low-pressure zone, and the third partition being located above the second partition, the second partition and the third partition dividing the low-pressure zone into an upper low-pressure zone, a middle low-pressure zone and a lower low-pressure zone arranged in sequence from top to bottom, and the lower low-pressure zone of the box body having an air outlet on a side away from the high-pressure zone; A radiator, wherein the radiator is located between the lower low-pressure zone and the lower high-pressure zone, a side of the first partition plate close to the low-pressure zone is fixed to the top of the radiator, and a side of the second partition plate close to the high-pressure zone is fixed to the top of the radiator; A fan assembly, wherein the fan assembly is located in the lower high-pressure area, and the air outlet direction of the fan assembly is toward the radiator; The cooling air passes through the fan assembly from the air inlet, through the radiator, to the lower low-pressure zone, and then is discharged from the air outlet to form a first air flow channel; the first partition plate has a plurality of ventilation holes on one side 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-pressure zone to form a second air flow channel; The wind flow rate of the first wind flow channel is greater than the wind flow rate of the second wind flow channel.

2. The energy storage converter according to claim 1, characterized in that: The middle layer low pressure area and / or the upper layer low pressure area of ​​the box body has at least one exhaust hole on a side away from the high pressure area, and an exhaust fan is arranged on the exhaust hole.

3. The energy storage converter according to claim 2, characterized in that: The upper portion of at least one of the air outlets is located in the upper low-pressure zone, and the lower portion is located in the middle low-pressure zone.

4. The energy storage converter according to any one of claims 2 or 3, characterized in that: The exhaust fan draws out the gas in the upper low-pressure zone to form a third wind flow channel, and the wind flow rate of the third wind flow channel is lower than the wind flow rate of the second wind flow channel.

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

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

7. The energy storage converter according to claim 1, characterized in that: 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 is higher than the height of the third part relative to the bottom surface of the box body, the side of the third part away from the second part is fixed to the top of the radiator, and the ventilation hole is located on the second part.

8. The energy storage converter according to claim 1, characterized in that: At least one of the first partition, the second partition or the third partition includes a plurality of bending portions, the bending portions have a plurality of fixing holes, and 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.

9. The energy storage converter according to claim 8, characterized in that: 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: Also includes: Two fixing parts are arranged opposite to each other in a direction perpendicular to the arrangement direction of the high-pressure zone and the low-pressure zone, the fixing parts are located between the lower low-pressure zone and the lower high-pressure zone, and are fixed to the inner wall of the box, and both ends of the radiator are fixed on the fixing parts so that the radiator is suspended in the box.

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