Energy Storage Inverter and Energy Storage System

Abstract

This application relates to the field of energy storage technologies, particularly to an energy storage converter and an energy storage system. In the embodiments of this application, by configuring the first cavity of the box body to include a first region and a second region arranged along a first direction, and enabling the air flow generating device to generate a first air flow flowing through the first region and a second air flow flowing through the second region. Since both the first air flow and the second air flow flow into the first cavity from the first side and flow out from the second side of the first cavity, the first air flow can be used for thermal management of the first region and the second air flow can be used for thermal management of the second region. At the same time, since the average heat generation of the devices arranged in the first region is greater than that of the devices arranged in the second region, by arranging a cover body in the first region, more of the first air flow can flow into and out of the first channel defined by the cover body, thereby improving the thermal management effect of the first region and further enhancing the overall thermal management effect.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage, and particularly to an energy storage converter and an energy storage system. Background Art

[0002] With the development of energy storage systems, the power of energy storage converters has been continuously improved, and the power consumption of internal devices has also been continuously increased, resulting in an increase in the heat generated by the devices, and thus higher requirements for the thermal management effect of the energy storage converter. Summary of the Invention

[0003] Based on this, it is necessary to provide an energy storage converter and an energy storage system to improve the thermal management effect of the energy storage converter.

[0004] According to one aspect of the present application, an embodiment of the present application provides an energy storage converter, including: a box body having a first cavity, the first cavity including a first region and a second region arranged along a first direction, the first cavity having a first side and a second side oppositely arranged along a second direction, the first direction and the second direction intersecting each other; a plurality of devices disposed at least in the first region and the second region, the average heat generation of all the devices disposed in the first region being greater than the average heat generation of all the devices disposed in the second region; an air flow generating device disposed in the first cavity; the air flow generating device being configured to generate a first air flow flowing through the first region and a second air flow flowing through the second region; both the first air flow and the second air flow being configured to flow in from the first side and flow out from the second side; and a cover body disposed in the first region and defining a first channel; the air flow path defined by the first channel constitutes at least part of the flow path of the first air flow, and at least part of at least some of the devices located in the first region is located inside the cover body.

[0005] In some embodiments, the energy storage converter further includes a first partition wall disposed in the first cavity and separating and defining a first sub-cavity and a second sub-cavity arranged along a third direction; a part of both the first sub-cavity and the second sub-cavity is located in the first region, and the other part is located in the second region; an opening is provided on the first partition wall, the opening is located in the first region, and the opening communicates the first sub-cavity and the second sub-cavity; the cover body is disposed at least in the first sub-cavity, and at least part of at least some of the devices disposed in the first sub-cavity and located in the first region is located inside the cover body; the opening and the inside of the cover body are connected, and the orthographic projection of the opening on a reference plane and the orthographic projection of the cover body on the reference plane have an overlapping part; the reference plane is a plane perpendicular to the third direction, and the first direction, the second direction, and the third direction intersect pairwise.

[0006] In some embodiments, along the direction from the first side to the second side, a part of the cover body is disposed in the first sub-cavity, and at least part of the other part of the cover body extends into the second sub-cavity through the opening; at least part of at least some of the devices disposed in the second sub-cavity is located inside the cover body.

[0007] In some embodiments, the cover body has a stepped portion; the stepped portion is configured to guide the first air flow in the first sub-chamber to enter the second sub-chamber through the opening.

[0008] In some embodiments, the part of the cover body disposed in the first sub-chamber is defined as the first cover section, and the part of the cover body extending into the second sub-chamber through the opening is defined as the second cover section; the connection between the first cover section and the second cover section defines the stepped portion.

[0009] In some embodiments, the cover body has an avoidance portion; the orthographic projection of the avoidance portion on the reference plane and the orthographic projection of the opening on the reference plane have an overlapping part.

[0010] In some embodiments, the part of the cover body disposed in the first sub-chamber is defined as the first cover section, and the part of the cover body extending into the second sub-chamber through the opening is defined as the second cover section; along the direction from the first sub-chamber to the second sub-chamber, the second cover section is located downstream of the first cover section to define the avoidance portion; and / or, the cover body is provided with a notch portion along the first direction, and the orthographic projection of the notch portion on the reference plane and the orthographic projection of the opening on the reference plane have an overlapping part.

[0011] In some embodiments, the part of the cover body disposed in the first sub-chamber is defined as the first cover section, and the part of the cover body extending into the second sub-chamber through the opening is defined as the second cover section; the first cover section and the second cover section are detachably connected.

[0012] In some embodiments, along the direction from the first side to the second side, the first partition wall is spaced from the first side of the first chamber and defines a receiving cavity for receiving some devices; the first sub-chamber and the second sub-chamber are both connected to the receiving cavity; along the direction from the first side to the second side, the receiving cavity is located upstream of the first sub-chamber and the second sub-chamber, so that the first air flow flows into the first region through the receiving cavity, and the second air flow flows into the second region through the receiving cavity.

[0013] In some embodiments, the air flow generating device includes a first generating unit; the first generating unit includes: a first generating member disposed corresponding to the inlet of the first channel; the first generating member is configured to be able to transport the first air flow to the first channel; and a second generating member disposed corresponding to the outlet of the first channel; the second generating member is configured to output the first air flow in the first channel.

[0014] In some embodiments, the energy storage inverter further includes a temperature detecting member; the temperature detecting member is disposed corresponding to the opening, and the temperature detecting member is used to detect the temperature of the device exposed through the opening; the first generating member is configured to be able to adjust the working state in response to the detection information of the temperature detecting member.

[0015] In some embodiments, the first partition wall is provided with an air guiding opening, and the air guiding opening communicates the first sub-chamber and the second sub-chamber; along the direction from the first side to the second side, the air guiding opening is located upstream of the opening.

[0016] In some embodiments, the air guide port is located downstream of the target device along the direction pointing from the first side to the second side; the target device is a device located upstream of the opening along the direction pointing from the first side to the second side among the devices provided in the first sub-cavity and located in the first area and the cover body.

[0017] In some embodiments, along the direction from the first side to the second side, the components disposed in the first sub-cavity and located in the first region and the cover body are all located upstream of the opening.

[0018] In some embodiments, the energy storage inverter also includes an air guide; the air guide is arranged at the edge of the air guide port and is located in the second sub-cavity; the air guide has a first end and a second end relatively arranged along the extension direction of the air guide, and the first end is connected to the edge of the air guide port; along the direction pointing from the first side to the second side, the first end is located upstream of the second end; the direction pointing from the first end to the second end intersects with the third direction.

[0019] In some embodiments, the energy storage inverter also includes a second partition wall; the second partition wall is arranged in the box body, and divides the box body into a first cavity and a second cavity arranged along a third direction; along the direction of the second sub-cavity pointing to the first sub-cavity, the second cavity is located upstream of the first cavity; the second cavity has a third side and a fourth side arranged opposite to each other along the second direction; the energy storage inverter also includes an air cooling module arranged in the second cavity, and the air cooling module is configured to generate a third airflow flowing from the third side into the second cavity and flowing out from the fourth side; the direction of the third side pointing to the fourth side is the same as the direction of the first side pointing to the second side.

[0020] In some embodiments, a first connecting hole connecting the first cavity and the second cavity is opened on the second partition wall; the orthographic projection of the first connecting hole on the reference plane and the orthographic projection of the object device on the reference plane have an overlapping part; the object device is a device arranged on the part of the second partition wall corresponding to the opening along the third direction.

[0021] In some embodiments, the energy storage inverter also includes an object circuit board; the object circuit board is arranged in the first area and is supported by a second partition wall; the object device is located on the side of the object circuit board away from the second partition wall, and a second connecting hole connected to the first connecting hole is provided on the object circuit board; the orthographic projection of the second connecting hole on the reference plane and the orthographic projection of the object device on the reference plane have an overlapping part.

[0022] In some embodiments, the energy storage inverter further includes a first circuit board, a second circuit board, a third circuit board, and a fourth circuit board; among all the devices, there are multiple devices respectively arranged on the first circuit board, the second circuit board, the third circuit board, and the fourth circuit board; along the direction from the first side to the second side, the first circuit board and the second circuit board are arranged in the second sub-chamber; along the direction from the second sub-chamber to the first sub-chamber, the second circuit board and the third circuit board are arranged at intervals, and the devices arranged on the third circuit board are exposed through the opening; the fourth circuit board is arranged in the first sub-chamber and located in the first area, and the fourth circuit board is carried on the first partition wall; wherein, the second circuit board is electrically connected between the first circuit board and the third circuit board, and the third circuit board is electrically connected between the second circuit board and the fourth circuit board.

[0023] In some embodiments, the first circuit board is configured as a power board, the second circuit board is configured as a busbar board, the third circuit board is configured as an AC output board, and the fourth circuit board is configured as an electromagnetic interference suppression board.

[0024] In some embodiments, along the third direction, the second circuit board and the third circuit board are arranged at intervals and define a second channel; the second sub-chamber has a wall structure that is opposite to and spaced apart from the first sub-chamber along the third direction, and the wall structure is provided with an air guiding hole that cooperates with the second channel, and the air guiding hole is used to introduce air flow into the second channel.

[0025] In some embodiments, the energy storage inverter further includes a second partition wall; the second partition wall is arranged in the box body and divides the box body into a first chamber and a second chamber arranged along the third direction; along the direction from the second sub-chamber to the first sub-chamber, the second chamber is located upstream of the first chamber; the second chamber has a third side and a fourth side that are opposite to each other along the second direction, and the direction from the third side to the fourth side is the same as the direction from the first side to the second side; the energy storage inverter further includes an air-cooling module arranged in the second chamber, and the air-cooling module is configured to generate a third air flow that flows into the second chamber from the third side and flows out from the fourth side; wherein, the side of the second partition wall facing the second sub-chamber constitutes the wall structure, and the air guiding hole is used to introduce a part of the third air flow into the second channel.

[0026] In some embodiments, the second area includes a first sub-area located in the first sub-chamber and a second sub-area located in the second sub-chamber; the average heat generation of all the devices arranged in the first sub-area is greater than the average heat generation of all the devices arranged in the second sub-area, and the second air flow generated by the air flow generating device is configured to flow through at least the first sub-area.

[0027] In some embodiments, the second air flow generated by the air flow generating device is configured to be able to flow through the first sub-area and the second sub-area; the fluid path of the second air flow flowing through the first sub-area and the fluid path of the second air flow flowing through the second sub-area are arranged along the third direction.

[0028] In some embodiments, the air flow generating device includes a second generating unit disposed in the second region; in the direction from the first side to the second side, the second generating unit is located downstream of the first partition wall; a part of the air inlet of the second generating unit communicates with the first sub-chamber, and another part of the air inlet of the second generating unit communicates with the second sub-chamber.

[0029] In some embodiments, the air inlet of the second generating unit includes a first sub-inlet and a second sub-inlet that communicate with each other; the first sub-inlet and the second sub-inlet are arranged along a third direction, the first sub-inlet communicates with the first sub-chamber, and the second sub-inlet communicates with the second sub-chamber; the opening area of the first sub-inlet is larger than the opening area of the second sub-inlet.

[0030] In some embodiments, the first partition wall has a first side and a second side that are oppositely arranged along a second direction, and the direction from the first side to the second side is the same as the direction from the first side to the second side; the opening is configured as a notch that at least penetrates the second side.

[0031] In some embodiments, the first partition wall further has a third side and a fourth side that are oppositely arranged along a first direction, the third side is farther from the second region than the fourth side, and both the third side and the fourth side are connected between the first side and the second side; the opening is configured as a notch that penetrates the second side and the third side.

[0032] In some embodiments, the first partition wall includes a first partition portion and a second partition portion that are connected to each other, the first partition portion is located in the first region, and the second partition portion is located in the second region; in the direction from the first side to the second side, the first partition portion and the opening are arranged in sequence.

[0033] According to another aspect of the present application, embodiments of the present application provide an energy storage system, including the energy storage converter in any of the above embodiments.

[0034] In the above energy storage converter and energy storage system, the energy storage converter at least includes a box body, a plurality of devices, an air flow generating device, and a cover body. By configuring the first chamber of the box body to include a first region and a second region arranged along a first direction, and enabling the air flow generating device to generate a first air flow flowing through the first region and a second air flow flowing through the second region. Since both the first air flow and the second air flow flow into the first chamber from the first side and flow out from the second side of the first chamber, the first air flow can be used for thermal management of the first region and the second air flow can be used for thermal management of the second region, so that thermal management can be carried out on the first region and the second region specifically. At the same time, since the average heat generation of the devices arranged in the first region is greater than the average heat generation of the devices arranged in the second region, by providing a cover body in the first region, more first air flow can flow into and out of the first channel defined by the cover body, thereby improving the thermal management effect of the first region and further improving the thermal management effect of the energy storage converter as a whole.

[0035] Additional aspects and advantages of the embodiments of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Through reading the detailed description of the following embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the embodiments and are not considered to be a limitation of the present application. Moreover, in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0037] Figure 1 is a perspective structural schematic diagram of an energy storage converter in one perspective for some embodiments of the present application;

[0038] Figure 2 is a perspective structural schematic diagram of an energy storage converter in another perspective for some embodiments of the present application;

[0039] Figure 3 is a perspective structural schematic diagram of an energy storage converter with some structures removed in one perspective for some embodiments of the present application;

[0040] Figure 4 is Figure 3 a perspective structural schematic diagram of the structure shown with the cover removed;

[0041] Figure 5 is a perspective structural schematic diagram of an energy storage converter after removing some structures for some embodiments of the present application;

[0042] Figure 6 is Figure 5 a structural schematic diagram of the structure in with the reference plane removed;

[0043] Figure 7 is a schematic diagram of the projection relationship between an opening and a cover for some embodiments of the present application;

[0044] Figure 8 is Figure 3 a side view structural schematic diagram of the structure shown;

[0045] Figure 9 is a schematic diagram of the projection relationship between an opening and an avoidance portion for some embodiments of the present application;

[0046] Figure 10 is a schematic diagram of the projection relationship between a notch portion and an opening for some embodiments of the present application;

[0047] Figure 11 is Figure 8 a structural schematic diagram of with the cover removed;

[0048] Figure 12 is Figure 11 a schematic diagram of a partially enlarged structure at position U;

[0049] Figure 13 is a three-dimensional structure diagram of a part of the energy storage converter removed in some embodiments of the present application from another perspective;

[0050] Figure 14 is a schematic diagram of the air flow of the energy storage converter in some embodiments of the present application;

[0051] Figure 15 is a schematic diagram of the projection relationship between the first communication hole and the object device in some embodiments of the present application;

[0052] Figure 16 is a schematic diagram of the projection relationship between the second communication hole and the object device in some embodiments of the present application;

[0053] Figure 17 is a schematic diagram of the air flow of the energy storage converter in some other embodiments of the present application;

[0054] Figure 18 is a three-dimensional structure diagram of the cooperation between the air-cooled module, the second partition wall and the device in some embodiments of the present application;

[0055] Figure 19 is a schematic diagram of the other side view structure of a part of the energy storage converter in some other embodiments of the present application;

[0056] Figure 20 is a schematic diagram of the structure of the cooperation between the second generating unit and the first partition wall in some embodiments of the present application;

[0057] Figure 21 is a schematic diagram of the air flow of the energy storage converter in some other embodiments of the present application;

[0058] Figure 22 is a schematic diagram of the air flow of the energy storage converter in some other embodiments of the present application;

[0059] Figure 23 is a schematic diagram of the air flow of the energy storage converter in some other embodiments of the present application.

[0060] Description of reference numerals:

[0061] Energy storage converter 100;

[0062] Cabinet 110, first wall 111, second wall 112, third wall 113, fourth wall 114, fifth wall 115, sixth wall 116, first cavity Q1, first region z1, second region z2, first sub-region z21, second sub-region z22, first side c1, second side c2, first sub-cavity Q11, second sub-cavity Q12, wall structure a, accommodation cavity Q13, second cavity Q2, third side c3, fourth side c4, first vent h1, second vent h2, third vent h3, fourth vent h4;

[0063] Device 120, target device n1, object device n2;

[0064] Airflow generating device 130, first generating unit 131, first generating member 1311, second generating member 1312, first air current g1, second generating unit 132, air inlet f, first sub-inlet f1, second sub-inlet f2, second air current g2;

[0065] Cover 140, first channel p1, stepped portion s, first cover section 141, second cover section 142, avoidance portion m, notch portion g;

[0066] First partition wall 150, first side b1, second side b2, third side b3, fourth side b4, first partition portion 151, second partition portion 152, opening k, air guiding opening w1;

[0067] Air guiding member 160, first end e1, second end e2;

[0068] Second partition wall 170, first communication hole t1, open portion X;

[0069] Air cooling module 180, fan 181, radiator 182, third air current g3;

[0070] Temperature detection component I;

[0071] Object circuit board Dm, second communication hole t2, first circuit board D1, second circuit board D2, third circuit board D3, fourth circuit board D4, second channel p2, air guiding hole w2, fifth circuit board D5, sixth circuit board D6;

[0072] Reference plane J, reference plane E, first projection y1, second projection y2, third projection y3, fourth projection y4, fifth projection y5, sixth projection y6, seventh projection y7;

[0073] First direction F1, second direction F2, third direction F3. Detailed implementation

[0074] To make the above objects, features, and advantages of the present application more apparent and understandable, the following provides a detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0075] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing 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, and thus should not be construed as a limitation of the present application.

[0076] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if there is a term "plurality", the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0077] In the present application, unless otherwise clearly defined and limited, if there are terms such as "mounted", "connected", "connected to", "fixed", etc., these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can 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, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0078] In this application, unless otherwise clearly specified and defined, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal level than the second feature.

[0079] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0080] According to some embodiments of the present application, please refer to Figures 1 to 4 , Figure 1 which is a perspective structural schematic diagram of the energy storage converter 100 in one perspective in some embodiments of the present application, Figure 2 which is a perspective structural schematic diagram of the energy storage converter 100 in another perspective in some embodiments of the present application, Figure 3 which is a perspective structural schematic diagram of the energy storage converter 100 with some structures removed in one perspective in some embodiments of the present application, Figure 4 is Figure 3 a perspective structural schematic diagram of the structure shown in which the cover 140 is removed. The embodiments of the present application provide an energy storage converter 100, including a box body 110, a plurality of devices 120, an air flow generating device 130 and a cover 140.

[0081] The box body 110 is a structure for accommodating relevant components inside the energy storage converter 100. With reference to Figure 5 , Figure 5 which is a perspective structural schematic diagram of the energy storage converter 100 with some structures removed in some embodiments of the present application, the box body 110 has a first cavity Q1, the first cavity Q1 includes a first region z1 and a second region z2 arranged along a first direction F1, the first cavity Q1 has a first side c1 and a second side c2 oppositely arranged along a second direction F2, and the first direction F1 and the second direction F2 intersect with each other.

[0082] In Figure 5In order to facilitate the description of the division of the regions inside the box body 110, the division of the regions inside the box body 110 is schematically shown by dashed lines. Among them, a reference plane J is schematically shown in the first cavity Q1. The reference plane J is perpendicular to the first direction F1. The regions on both sides of the reference plane J along the first direction F1 are the first region z1 and the second region z2 respectively. It should be noted that the reference plane J and the dashed lines inside the box body 110 are only for showing the first region z1 and the second region z2, and there is no obvious structural boundary inside the box body 110 to distinguish the first region z1 and the second region z2. Of course, relevant structures can also be set inside the box body 110 as structural boundaries to define the first region z1 and the second region z2, and no specific restrictions are made here. For similar places involved later, reference can be made for understanding and will not be elaborated. The first direction F1 and the second direction F2 can be the length direction and the width direction of the box body 110 respectively, and the first direction F1 and the second direction F2 can be perpendicular to each other. It should be noted that the dimensions of the box body 110 in the length direction and the width direction can be equal or not equal, and no specific restrictions are made here.

[0083] Exemplarily, taking Figure 1 and Figure 2 as an example, the box body 110 includes a first wall 111 and a second wall 112 that are oppositely arranged along the second direction F2, a third wall 113 and a fourth wall 114 that are oppositely arranged along the third direction F3, and a fifth wall 115 and a sixth wall 116 that are oppositely arranged along the first direction F1. The first wall 111, the second wall 112, the third wall 113, the fourth wall 114, the fifth wall 115 and the sixth wall 116 are correspondingly connected to form the box body 110. The first direction F1, the second direction F2 and the third direction F3 are perpendicular to each other in pairs. With reference to Figure 5 , at least a part of the side of the first wall 111 facing the inside of the box body 110 constitutes the first side c1 of the first cavity Q1, and at least a part of the side of the second wall 112 facing the inside of the box body 110 constitutes the second side c2 of the first cavity Q1. It can be understood that in the perspective of Figure 5 , the first side c1 and the second side c2 are marked by dashed lines to represent the relative positions of the first side c1 and the second side c2. Correspondingly, for example, the first cavity Q1, the first region z1 and the second region z2 are located inside the box body 110 and are also marked by dashed lines. For similar places involved later, reference can be made for understanding and will not be elaborated.

[0084] The multiple devices 120 are at least disposed in the first region z1 and the second region z2, and the average heat generation of all the devices 120 disposed in the first region z1 is greater than the average heat generation of all the devices 120 disposed in the second region z2.

[0085] Device 120 refers to various electronic components, parts or assemblies that can be used to form an electronic device, a circuit system or other devices. Device 120 may include capacitors, relays, transformers, Hall elements, IGBT (Insulated Gate Bipolar Transistor) modules, power transistors, etc., without specific limitations here. The multiple devices 120 are at least disposed in the first region z1 and the second region z2, that is, there are devices 120 disposed in the first region z1 and devices 120 disposed in the second region z2 among the multiple devices 120. The devices 120 disposed in the first region z1 may be of one type or multiple types. The devices 120 disposed in the second region z2 may be of one type or multiple types. In Figure 4 In the illustrated case, only some of the devices 120 are shown.

[0086] It should be noted that in the embodiments of the present application, the calorific value refers to the calorific value emitted by the device 120 when it works at the rated voltage until it reaches a stable state (the calorific value is relatively stable). Taking all the devices 120 disposed in the first region z1 as an example, the rated voltages corresponding to all the devices 120 disposed in the first region z1 may be different or the same. The average calorific value of all the devices 120 disposed in the first region z1 may be the average value of the calorific values corresponding to all the devices 120 disposed in the first region z1 when each device 120 works at the rated voltage corresponding to it until it reaches a stable state. The "average calorific value of all the devices 120 disposed in the second region z2" can be understood by referring to the "average calorific value of all the devices 120 disposed in the first region z1", and will not be elaborated here.

[0087] The airflow generating device 130 is disposed in the first chamber Q1. The airflow generating device 130 is configured to generate a first airflow flowing through the first region z1 and a second airflow flowing through the second region z2. Both the first airflow and the second airflow are configured to flow in from the first side c1 and flow out from the second side c2.

[0088] The airflow generating device 130 is a device capable of generating an airflow with certain parameters (such as flow velocity, flow rate, pressure, etc.). The airflow generating device 130 may be a fan component. Exemplarily, with reference to Figure 1 and Figure 2, a plurality of first vents h1 communicating with the first chamber Q1 are provided on the first wall 111, and a plurality of second vents h2 communicating with the first chamber Q1 are provided on the second wall 112. The number, arrangement, and structure of the first vents h1 and the second vents h2 are not specifically limited herein. Both the first air flow and the second air flow are configured to flow in from the first side c1 and flow out from the second side c2. That is, the first air flow can flow into the first chamber Q1 through the corresponding first vents h1 and flow out of the first chamber Q1 through the first region z1 from the corresponding second vents h2, and the second air flow can flow into the first chamber Q1 through the corresponding first vents h1 and flow out of the first chamber Q1 through the second region z2 from the corresponding second vents h2.

[0089] The cover 140 is provided in the first region z1 and defines a first passage p1. The air flow path defined by the first passage p1 constitutes at least part of the flow path of the first air flow, and at least part of at least some of the devices 120 located in the first region z1 is located within the cover 140.

[0090] The cover 140 is a housing or structure for covering, protecting, or isolating corresponding components or regions. The fact that the air flow path defined by the first passage p1 constitutes at least part of the flow path of the first air flow means that the cover 140 can cover all of the first region z1 or part of the first region z1. Alternatively, the length of the cover 140 along the second direction F2 is less than or equal to the length of the first region z1 along the second direction F2. That is, at least the first air flow will flow within the first passage p1. The cover 140 can guide more air flow to pass through the first passage p1.

[0091] Thus, by configuring the first chamber Q1 of the box body 110 to include a first region z1 and a second region z2 arranged along the first direction F1, and enabling the air flow generating device 130 to generate a first air flow flowing through the first region z1 and a second air flow flowing through the second region z2, since both the first air flow and the second air flow flow in from the first side c1 of the first chamber Q1 and flow out from the second side c2 of the first chamber Q1, the first air flow can be used for thermal management of the first region z1 and the second air flow can be used for thermal management of the second region z2, and thus thermal management can be carried out for the first region z1 and the second region z2 in a targeted manner. At the same time, since the average heat generation of the devices 120 arranged in the first region z1 is greater than the average heat generation of the devices 120 arranged in the second region z2, by providing the cover 140 in the first region z1, more first air flow can flow into and out of the first passage p1 defined by the cover 140, thereby improving the thermal management effect of the first region z1, and further improving the thermal management effect of the energy storage converter 100 as a whole.

[0092] According to some embodiments of the present application, please continue to refer to Figures 3 to 5 and in combination with reference toFigure 6 , Figure 6 For the structural schematic diagram of removing the reference plane J from Figure 5 , the energy storage converter 100 further includes a first partition wall 150. The first partition wall 150 is disposed in the first cavity Q1 and divides the first cavity Q1 into a first sub-cavity Q11 and a second sub-cavity Q12 arranged along the third direction F3. A part of both the first sub-cavity Q11 and the second sub-cavity Q12 is located in the first region z1, and the other part is located in the second region z2. An opening k is provided on the first partition wall 150. The opening k is located in the first region z1 and connects the first sub-cavity Q11 and the second sub-cavity Q12. The cover 140 is at least disposed in the first sub-cavity Q11, and at least a part of at least some devices 120 disposed in the first sub-cavity Q11 and located in the first region z1 is located inside the cover 140. The inside of the opening k is connected to the inside of the cover 140, and the orthographic projection of the opening k on the reference plane E and the orthographic projection of the cover 140 on the reference plane E have an overlapping part. The reference plane E is a plane perpendicular to the third direction F3, and the first direction F1, the second direction F2, and the third direction F3 intersect pairwise.

[0093] Among them, in Figure 6 , the first partition wall 150 located in the first cavity Q1 of the box body 110 is schematically shown by a dotted line, and the part located in the first region z1 and the part located in the second region z2 are separated by a dotted line on the first partition wall 150. With reference to Figure 7 , Figure 7 This is a schematic diagram of the projection relationship between the opening k and the cover 140 in some embodiments of the present application. The orthographic projection of the opening k on the reference plane E is the first projection y1, and the orthographic projection of the cover 140 on the reference plane E is the second projection y2. The first projection y1 and the second projection y2 have an overlapping part. Taking Figure 7 as an example, the situation where the first projection y1 is located inside the second projection y2 is schematically shown.

[0094] The cover 140 is at least disposed in the first sub-cavity Q11. That is to say, the cover 140 can be entirely disposed in the first sub-cavity Q11, or a part of the cover 140 can be disposed in the first sub-cavity Q11, and the other part of the cover 140 can be disposed in the second sub-cavity Q12 through the opening k. No specific limitation is made here. Taking Figure 3 as an example and with reference to Figure 6 , the situation where a part of the cover 140 is disposed in the first sub-cavity Q11 and the other part is disposed in the second sub-cavity Q12 is schematically shown.

[0095] By providing the first partition wall 150, the first cavity Q1 can be divided and defined into a first sub-cavity Q11 and a second sub-cavity Q12. In this way, the devices 120 provided in the first region z1 and the devices 120 provided in the second region z2 can be arranged in a stacked manner, which is conducive to improving the overall space utilization rate and obtaining a more compact structure. By providing an opening k in the first partition wall 150, and the opening k is in communication with the interior of the cover 140, a part of the first air flow passing through the first channel p1 can enter the second sub-cavity Q12 from the first sub-cavity Q11 under the cooperation of the cover 140 and the opening k. Since the flow state of the air flow changes when the air flow entering the first sub-cavity Q11 passes through the first channel p1 defined by the cover 140. When this part of the air flow enters the second sub-cavity Q12 from the opening k, it will form a certain disturbance and mixing with the air flow in the second sub-cavity Q12. This air flow disturbance helps the air flow to exchange heat with the device 120 and promotes the flow of the air flow, thereby helping to improve the heat dissipation effect of the device 120 provided in the first region z1.

[0096] According to some embodiments of the present application, please continue to refer to Figure 3 and Figure 6 and, in combination with reference to Figure 8 , Figure 8 is Figure 3 a schematic side view structure diagram of the structure shown in the figure. Along the direction from the first side c1 to the second side c2, a part of the cover 140 is provided in the first sub-cavity Q11, and at least a part of another part of the cover 140 extends into the second sub-cavity Q12 through the opening k. At least a part of at least some of the devices 120 provided in the second sub-cavity Q12 is located inside the cover 140. Among them, the direction from the first side c1 to the second side c2 and the second direction F2 are parallel to each other.

[0097] Specifically, taking Figure 3 and Figure 8 as an example and in combination with reference to Figure 6 , the cover 140 includes a first cover section 141 and a second cover section 142 arranged in sequence along the direction from the first side c1 to the second side c2. The first cover section 141 is provided in the first sub-cavity Q11, and at least a part of the second cover section 142 extends into the second sub-cavity Q12 through the opening k.

[0098] Since at least a part of another part of the cover 140 is located in the second sub-cavity Q12, the cover 140 can act on both the first sub-cavity Q11 and the second sub-cavity Q12 at the same time, expanding the acting range of the cover 140. When the air flow passes through the first channel p1, it can be guided by another part of the cover 140 into the second sub-cavity Q12, which is more conducive to forming a disturbed and mixed air flow, and further more conducive to improving the heat dissipation effect of the parts of the first sub-cavity Q11 and the second sub-cavity Q12 located in the first region z1.

[0099] Of course, in some other embodiments, the second cover section 142 shown above may not extend into the second sub-chamber Q12, and no specific limitation is made here.

[0100] According to some embodiments of the present application, please continue to refer to Figure 3 、 Figure 6 and Figure 8 , the cover 140 has a stepped portion s. The stepped portion s is configured to guide the first air flow located in the first sub-chamber Q11 to enter the second sub-chamber Q12 through the opening k.

[0101] Specifically, the stepped portion s is at least formed inside the cover 140. That is, the stepped portion s may be formed on the inner surface of the cover 140, or the entire wall of the cover 140 may form the stepped portion s. At this time, the stepped portion s can be seen both inside and outside the cover 140. Taking the stepped portion s being formed inside the cover 140 as an example, the stepped portion s refers to the part with a stepped structure provided inside the cover 140, which is usually composed of planes or curved surfaces with different heights, forming a shape similar to a staircase. Parameters such as the height, width, and number of steps of the stepped portion s can be adjusted according to specific design requirements. Taking Figure 3 and Figure 8 as an example, the situation where the stepped portion s can be seen both inside and outside the cover 140 is shown.

[0102] It can be understood that the different stepped surfaces of the stepped portion s can change the flow direction of the air flow, so that the first air flow located in the first sub-chamber Q11 enters the second sub-chamber Q12 through the opening k, in order to better cover the device 120 that needs to be cooled and improve the utilization efficiency of the air flow. When the air flow passes through the steps of the stepped portion s, a certain degree of disturbance will be generated. This disturbance helps to break the boundary layer formed by the air flow on the surface of the cover 140, increase the heat exchange between the air flow and the cover 140 and the corresponding device, thereby improving the heat dissipation effect. Further, the structure of the stepped portion s can increase the overall strength and stability of the cover 140. The stepped design enables the cover 140 to better disperse the action of force when being impacted by the air flow or external pressure, reducing the possibility of deformation or damage of the cover 140. For example, for a cover 140 with a relatively thin thickness, the stepped portion s can act as a reinforcing rib to improve the anti-deformation ability of the cover 140. In addition, by setting the stepped portion s inside the cover 140, the devices can be arranged according to the heights and shapes of different devices.

[0103] In this way, by setting the stepped portion s on the cover 140, not only can the air flow be optimized, but also the structural strength of the cover 140 can be increased and the space utilization rate can be improved.

[0104] According to some embodiments of the present application, please continue to refer to Figure 3 、 Figure 6 and Figure 8, the part of the cover body 140 disposed in the first sub - cavity Q11 is defined as the first cover section 141, and the part of the cover body 140 extending into the second sub - cavity Q12 through the opening k is defined as the second cover section 142. The connection part between the first cover section 141 and the second cover section 142 defines a stepped portion s.

[0105] By defining the stepped portion s at the connection part between the first cover section 141 and the second cover section 142, it is not only beneficial to guide the air flow into the second sub - cavity Q12, but also can enhance the structural strength of the connection part. It can be understood that since the air flow passes through the first cover section 141 and enters the second sub - cavity Q12 under the action of the second cover section 142, the connection part between the first cover section 141 and the second cover section 142 may be subjected to certain air flow forces. Forming the stepped portion s at the connection part can further improve the structural stability and reliability of the cover body 140.

[0106] Of course, in some other embodiments, the stepped portion s can also be disposed on the first cover section 141 or on the second cover section 142, and specific limitations are not made here.

[0107] According to some embodiments of the present application, please continue to refer to Figure 3 and Figure 8 , the cover body 140 has an avoidance portion m, and the orthographic projection of the avoidance portion m on the reference plane E and the orthographic projection of the opening k on the reference plane E have an overlapping part.

[0108] The avoidance portion m is a structure in the cover body 140 that can avoid other components in the first cavity Q1 and provides corresponding space for other components.

[0109] Specifically, with reference to Figure 9 , Figure 9 is a schematic diagram of the projection relationship between the opening k and the avoidance portion m in some embodiments of the present application. The orthographic projection of the opening k on the reference plane E is the first projection y1, and the orthographic projection of the avoidance portion m on the reference plane E is the third projection y3, and the first projection y1 and the third projection y3 have an overlapping part.

[0110] In this way, by providing the avoidance portion m on the cover body 140, not only can the space be utilized more fully, but also it is convenient to install and maintain other components in the first cavity Q1.

[0111] According to some embodiments of the present application, please continue to refer to Figure 3 , Figure 6 and Figure 8, the part of the cover 140 disposed in the first sub-chamber Q11 is defined as the first cover section 141, and the part of the cover 140 extending into the second sub-chamber Q12 through the opening k is defined as the second cover section 142. Along the direction from the first sub-chamber Q11 to the second sub-chamber Q12, the second cover section 142 is located downstream of the first cover section 141 to define an avoidance portion m. Among them, the direction from the first sub-chamber Q11 to the second sub-chamber Q12 is parallel to the third direction F3.

[0112] Since the second cover section 142 is located downstream of the first cover section 141 along the direction from the first sub-chamber Q11 to the second sub-chamber Q12, there is a height difference between the first cover section 141 and the second cover section 142, so that the avoidance portion m can be defined. With reference to the content shown in some of the foregoing embodiments, that is, the connection between the first cover section 141 and the second cover section 142 defines a stepped portion s. In this way, it is not only convenient for installing and enclosing the relevant components in the first chamber Q1 and making more full use of the space, but also can have the advantages of the stepped portion s in some of the foregoing embodiments.

[0113] It can be understood that the stepped-down design can more accurately control and guide the airflow at different height stages. At the stepped portion s, the airflow will experience a relatively independent change process, which can make the airflow flow in a specific manner. Compared with the cover 140 with a smooth descent or the cover 140 with a consistent top surface height, the descending stepped portion s will cause more obvious disturbance to the airflow at the step, enabling the airflow to better carry away heat and improving the heat dissipation efficiency.

[0114] Of course, in some other embodiments, the avoidance portion m can be disposed on the first cover section 141 or defined by a part of the second cover section 142, and no specific limitation is made here.

[0115] According to some embodiments of the present application, please continue to refer to Figure 3 、 Figure 6 and Figure 8 , a notch portion g is provided on the cover 140 along the first direction F1, and the orthographic projection of the notch portion g on the reference plane E and the orthographic projection of the opening k on the reference plane E have an overlapping part.

[0116] Specifically, with reference to Figure 10 , Figure 10 is a schematic diagram of the projection relationship between the notch portion g and the opening k in some embodiments of the present application. The orthographic projection of the opening k on the reference plane E is the first projection y1, and the orthographic projection of the notch portion g on the reference plane E is the fourth projection y4. The first projection y1 and the fourth projection y4 have an overlapping part. The notch portion g can be disposed on the first cover section 141, or on the second cover section 142, or jointly defined by the first cover section 141 and the second cover section 142, and no specific limitation is made here. Taking Figure 3As an example, the situation where a notch portion g is provided at the first cover segment 141 is illustrated.

[0117] By providing the notch g, the related devices covered by the cover body 140 can be avoided, so as to facilitate the arrangement of the related devices. Since the orthographic projections of the notch g and the opening k on the reference plane E have an overlapping part, the notch g can avoid the related devices exposed through the opening k.

[0118] According to some embodiments of this application, please continue to refer to Figure 3 , Figure 6 and Figure 8 The portion of the cover body 140 disposed in the first sub-cavity Q11 is defined as the first cover segment 141, and the portion of the cover body 140 extending into the second sub-cavity Q12 through the opening k is defined as the second cover segment 142. The first cover segment 141 and the second cover segment 142 are detachably connected.

[0119] Exemplarily, the first cover segment 141 and the second cover segment 142 may be detachably connected by fasteners, or may be detachably connected by snap-fitting, plug-in, etc., which is not specifically limited herein.

[0120] Thus, by configuring the first cover segment 141 and the second cover segment 142 to be detachably connected, it is convenient to install the cover body 140 and maintain the device 120 covered by the cover body 140. Furthermore, when a step portion s and / or an escape portion m is formed on the cover body 140, it is more convenient to install the cover body 140 and related components.

[0121] Of course, in some other embodiments, the first cover segment 141 and the second cover segment 142 may be an integral structure, which is not specifically limited herein.

[0122] According to some embodiments of this application, please continue to refer to Figure 5 and Figure 6 , along the direction from the first side c1 to the second side c2, the first partition wall 150 is spaced apart from the first side c1 of the first cavity Q1, and defines a receiving cavity Q13 for receiving part of the device 120. The first sub-cavity Q11 and the second sub-cavity Q12 are both connected to the receiving cavity Q13. Along the direction from the first side c1 to the second side c2, the receiving cavity Q13 is located upstream of the first sub-cavity Q11 and the second sub-cavity Q12, so that the first airflow flows into the first area z1 via the receiving cavity Q13, and the second airflow flows into the second area z2 via the receiving cavity Q13.

[0123] Combined with reference Figure 1 When the airflow enters the accommodating chamber Q13 from the first vent h1, the airflow velocity will decrease due to the sudden increase in space, and the pressure will be buffered and stabilized, reducing the impact of airflow fluctuations on the internal structure, making the airflow entering the first chamber Q1 and the second chamber Q2 more stable, which is beneficial to improving the stability and reliability of the entire system.

[0124] By providing the accommodation chamber Q13, the airflow has more sufficient time and space to converge and adjust before entering the first channel p1 defined by the cover 140. This helps to improve the concentration and directivity of the airflow entering the cover 140, enabling the cover 140 to better gather the airflow into the first area z1, enhancing the wind-gathering effect of the cover 140, and further improving the heat dissipation effect of the device 120 provided in the first area z1. When more airflow flows into the interior of the cover 140, it may cause local pressure changes. At this time, the accommodation chamber can be used for buffering to improve the stability and safety of the overall device.

[0125] According to some embodiments of the present application, please continue to refer to Figure 3 and Figure 4 , the airflow generating device 130 includes a first generating unit 131. The first generating unit 131 includes a first generating member 1311 and a second generating member 1312. The first generating member 1311 is disposed corresponding to the inlet of the first channel p1, and the first generating member 1311 is configured to be able to transport the first airflow to the first channel p1. The second generating member 1312 is disposed corresponding to the outlet of the first channel p1, and the second generating member 1312 is configured to output the first airflow in the first channel p1. Among them, in Figure 3 , the position of the first channel p1 is shown, and the dashed line indicates that the first channel p1 is located inside the cover 140.

[0126] The first generating member 1311 and the second generating member 1312 can be configured as fan components. The first generating member 1311 being disposed corresponding to the inlet of the first channel p1 means that the first generating member 1311 can be disposed at the inlet of the first channel p1 or near the inlet of the first channel p1, as long as it can transport the first airflow to the first channel p1, and no specific limitation is made here. The second generating member 1312 being disposed corresponding to the outlet of the first channel p1 means that the second generating member 1312 can be disposed at the outlet of the first channel p1 or near the outlet of the first channel p1, as long as it can output the first airflow in the first channel p1.

[0127] Through the coordinated cooperation of the first occurrence member 1311 and the second occurrence member 1312, the air flow in the first channel p1 can be strengthened. The first occurrence member 1311 pushes the air flow into the first channel p1, and the second occurrence member 1312 accelerates the outflow of the air flow. This two-way action prompts the air flow to form a stable and rapid flow in the housing 140, improving the heat dissipation effect of the device 120 provided in the first region z1. At the same time, by controlling the operating parameters of the first occurrence member 1311 and the second occurrence member 1312, the flow rate, flow velocity, etc. of the air flow passing through the first channel p1 can be controlled, so that flexible adjustment can be made for different working conditions, improving the adaptability and flexibility of the overall device. In addition, due to the configuration of the first occurrence member 1311 and the second occurrence member 1312, if one of the first occurrence member 1311 and the second occurrence member 1312 fails, the other can continue to strengthen the air flow in the first channel p1 to a certain extent, enhancing the stability and reliability of the overall device.

[0128] According to some embodiments of the present application, please continue to refer to Figure 3 、 Figure 4 and Figure 6 , the energy storage converter 100 further includes a temperature detection member I. The temperature detection member I is provided corresponding to the opening k, and the temperature detection member I is used to detect the temperature of the device 120 exposed through the opening k. The first occurrence member 1311 is configured to be able to adjust its working state in response to the detection information of the temperature detection member I.

[0129] The temperature detection member I is a component for measuring the temperature of the corresponding device 120. Exemplarily, the temperature detection member I can be a thermocouple, a temperature sensor, or other components that can be used to detect temperature. The corresponding device 120 can be any device 120 exposed through the opening k. In the embodiment of the present application, the device 120 is the device 120 that is located at the most downstream in the direction from the first side c1 to the second side c2 among the devices 120 exposed through the opening k, that is, the last device 120.

[0130] The working state includes an on state and an off state, and the on state can include multiple sub-states. The intake air volumes generated by the first occurrence member 1311 corresponding to the multiple sub-states are different from each other. In the off state, the first occurrence member 1311 does not generate an air flow. Taking the first occurrence member 1311 as a fan component as an example, the rotational speeds of the first occurrence member 1311 corresponding to the multiple sub-states are different from each other. The rotational speed of the first occurrence member 1311 corresponding to the off state is 0 RPM (Revolutions Per Minute). By controlling the rotational speed of the first occurrence member 1311, the intake air volume entering the first channel p1 can be adjusted, thereby controlling the heat dissipation intensity.

[0131] Exemplarily, when the temperature detection component I detects that the temperature is within the target range, the first generating component 1311 can pause operation or reduce the rotational speed for a period of time; when the temperature is outside the target range, the first generating component 1311 can start and adjust to the target rotational speed for heat dissipation. Of course, the operation mode of the first generating component 1311 can also be other modes, which are not specifically limited herein.

[0132] The air flow flowing through the first channel p1 will flow through the device 120 exposed by the opening k by means of the opening k. During this process, the air flow in the first channel p1 will dissipate heat from the device 120 located upstream of the opening k. At this time, the temperature of the air flow may be higher than the temperature of the inlet air flow entering the first channel p1. Therefore, the device 120 exposed by the opening k may be more difficult to dissipate heat than its upstream device 120. Therefore, by setting the temperature detection component I to adjust the working state of the first generating component 1311, dynamic adjustment of heat dissipation can be achieved. When the temperature of the device 120 exposed by the opening k is relatively high, the first generating component 1311 can be controlled to increase the air intake volume, improve the heat dissipation efficiency, and timely take away the excess heat. When the temperature of the device 120 exposed by the opening k is relatively low, the first generating component 1311 can be controlled to reduce the air intake volume, which can not only save energy but also contribute to the dynamic adjustment of heat dissipation within the entire first cavity Q1.

[0133] Of course, in some other embodiments, the dynamic adjustment of the heat dissipation process can also be achieved by controlling the number of the first generating components 1311 and the number of the second generating components 1312 to form a first generating unit 131 that can have different working states, which are not specifically limited herein.

[0134] According to some embodiments of the present application, please continue to refer to Figure 5 and Figure 6 and, in combination with reference to Figure 11 and Figure 12 Figure 11 is Figure 8 a schematic structural diagram of removing the cover 140 in Figure 12 is Figure 11 a partially enlarged structural diagram at U in Figure 12 wherein an air guide opening w1 is provided on the first partition wall 150, and the air guide opening w1 communicates the first sub-cavity Q11 and the second sub-cavity Q12. Along the direction from the first side c1 to the second side c2, the air guide opening w1 is located upstream of the opening k. In

[0135] ​For the direction pointing from the first side c1 to the second side c2, the first sub-chamber Q11 and the second sub-chamber Q12 are located upstream of the opening k and in a part of the first region z1. A part of the cover 140 is disposed inside the first sub-chamber Q11 (which can be understood by referring to the first cover section 141 shown in some of the foregoing embodiments), so that more air flow can more easily pass through the first sub-chamber Q11. Therefore, by providing the air guide opening w1 upstream of the opening k, part of the air flow in the first sub-chamber Q11 can be diverted to the second sub-chamber Q12, so that the bottom side of the device 120 provided corresponding to the opening k can be cooled, thereby improving the heat dissipation effect of the device 120 at the opening k. Herein, the bottom side of the device 120 provided corresponding to the opening k refers to the side of the device 120 away from the first sub-chamber Q11.

[0136] According to some embodiments of the present application, please continue to refer to Figure 5 、 Figure 6 、 Figure 11 and Figure 12 , in the direction pointing from the first side c1 to the second side c2, the air guide opening w1 is located downstream of the target device n1. The target device n1 is the device 120 that is located upstream of the opening k in the devices disposed in the first sub-chamber Q11 and within the first region z1 and the cover 140, in the direction pointing from the first side c1 to the second side c2.

[0137] By providing the air guide opening w1 downstream of the target device n1, it can be made such that after the air flow passes through the target device n1, part of the air flow enters the second sub-chamber Q12 via the air guide opening w1, which is not only beneficial to cooling the target device n1, but also capable of cooling the device 120 at the opening k.

[0138] It should be noted that the target device n1 can be determined according to the device 120 with the largest average heat generation amount among the devices disposed in the first sub-chamber Q11 and within the first region z1 and the cover 140. Of course, it may not be the device 120 with the largest average heat generation amount, and no specific limitation is made herein.

[0139] According to some embodiments of the present application, please continue to refer to Figures 3 to 6 、 Figure 11 , in the direction pointing from the first side c1 to the second side c2, all the devices disposed in the first sub-chamber Q11 and within the first region z1 and the cover 140 are located upstream of the opening k.

[0140] In this way, the airflow flowing into the first sub-chamber Q11 and located in the first region z1 can first dissipate heat from the devices provided in the first sub-chamber Q11 and located in the first region z1 and within the cover 140, and then enter the second sub-chamber Q12 through the opening k. In this way, it is not only beneficial to dissipate heat from the devices provided in the first sub-chamber Q11 and located in the first region z1 and within the cover 140, but also beneficial to arrange the cover 140 and related devices, making the overall structure more compact.

[0141] Of course, in some other embodiments, some of the devices provided in the first sub-chamber Q11 and located in the first region z1 and within the cover 140 may be located upstream of the opening k, and some may be located downstream of the opening k. No specific limitation is made here.

[0142] According to some embodiments of the present application, please continue to refer to Figure 6 、 Figure 11 and Figure 12 , the energy storage converter 100 further includes a wind guiding member 160. The wind guiding member 160 is provided at the edge of the air guiding opening w1 and is located within the second sub-chamber Q12. The wind guiding member 160 has a first end e1 and a second end e2 that are oppositely arranged along the extending direction of the wind guiding member 160. The first end e1 is connected to the edge of the air guiding opening w1. Along the direction from the first side c1 to the second side c2, the first end e1 is located upstream of the second end e2. The direction from the first end e1 to the second end e2 intersects with the third direction F3.

[0143] The wind guiding member 160 is a component for guiding the flow direction of the airflow and controlling the airflow distribution.

[0144] Since along the direction from the first side c1 to the second side c2, the first end e1 is located upstream of the second end e2, and the direction from the first end e1 to the second end e2 intersects with the third direction F3, the wind guiding member 160 is inclined relative to the first partition wall 150. By providing the inclined wind guiding member 160, it is beneficial to direct the airflow flowing into the second sub-chamber Q12 from the air guiding opening w1 to the device 120 provided corresponding to the opening k, thereby helping to improve the heat dissipation effect of the device 120 provided corresponding to the opening k.

[0145] It should be noted that the structure of the wind guiding member 160 is not specifically limited, as long as it is beneficial to direct the airflow flowing into the second sub-chamber Q12 from the air guiding opening w1 to the device 120 provided corresponding to the opening k. Exemplarily, the wind guiding member 160 may extend linearly at the first end e1 and the second end e2. Of course, the wind guiding member 160 may also extend in an arc shape between the first end e1 and the second end e2, and no specific limitation is made here.

[0146] According to some embodiments of the present application, please continue to refer to Figures 3 to 6 、 Figure 8 、Figure 11 , and with reference to Figure 13 , Figure 13 FIG. Figure 13 is a schematic perspective view of the energy storage converter 100 in some embodiments of the present application with some structures removed, from another perspective. The energy storage converter 100 further includes a second partition wall 170. The second partition wall 170 is disposed within the cabinet 110 and divides the interior of the cabinet 110 into a first chamber Q1 and a second chamber Q2 arranged along a third direction F3. Along the direction from the second sub-chamber Q12 to the first sub-chamber Q11, the second chamber Q2 is located upstream of the first chamber Q1. The second chamber Q2 has a third side c3 and a fourth side c4 oppositely disposed along a second direction F2. The energy storage converter 100 further includes an air-cooling module 180 disposed within the second chamber Q2. The air-cooling module 180 is configured to generate a third air flow that flows into the second chamber Q2 from the third side c3 and flows out of the second chamber Q2 from the fourth side c4. The direction from the third side c3 to the fourth side c4 is the same as the direction from the first side c1 to the second side c2. The direction from the third side c3 to the fourth side c4 is parallel to the second direction F2.

[0147] Exemplarily, with reference to Figure 1 and Figure 2 , a third ventilation opening h3 communicating with the second chamber Q2 is provided on the first wall 111 of the cabinet 110, and a fourth ventilation opening h4 communicating with the second chamber Q2 is provided on the second wall 112. The air flow generated by the air-cooling module 180 flows into the second chamber Q2 through the third ventilation opening h3 and flows out of the second chamber Q2 through the fourth ventilation opening h4.

[0148] In this way, by providing the second chamber Q2 and disposing the air-cooling module 180 within the second chamber Q2, the first partition wall 150 can be cooled by means of the air-cooling module 180, thereby further improving the heat dissipation effect of the first chamber Q1.

[0149] It should be noted that devices may or may not be provided within the second chamber Q2. When devices are provided within the second chamber Q2, it is not only beneficial for the device layout within the overall device, but also can further utilize the air-cooling module 180 to cool the devices within the second chamber Q2, thereby further improving the overall heat dissipation effect of the device.

[0150] According to some embodiments of the present application, please continue to refer to Figure 3 , Figure 4 , Figure 6 , Figure 11 and Figure 13 , and with reference to Figure 14 and Figure 15 , Figure 14 FIG. Figure 14 is a schematic diagram of the air flow of the energy storage converter 100 in some embodiments of the present application, Figure 15Schematic diagram of the projection relationship between the first communication hole t1 and the target device n2 in some embodiments of the present application, the first communication hole t1 connecting the first cavity Q1 and the second cavity Q2 is opened on the second partition wall 170. The orthographic projection of the first communication hole t1 on the reference plane E and the orthographic projection of the target device n2 on the reference plane E have an overlapping portion. The target device n2 is a device disposed on the portion of the second partition wall 170 corresponding to the opening k along the third direction F3.

[0151] Specifically, with reference to Figure 15 , the orthographic projection of the first connecting hole t1 on the reference plane E is the fifth projection y5, and the orthographic projection of the object device n2 on the reference plane E is the sixth projection y6, and the fifth projection y5 and the sixth projection y6 have an overlapping portion. Figure 15 , it is illustrated that the fifth projection y5 is located within the sixth projection y6.

[0152] Since the first connecting hole t1 connects the first cavity Q1 and the second cavity Q2, a part of the airflow generated by the air cooling module 180 in the second cavity Q2 can enter the first cavity Q1 through the first connecting hole t1. Since the orthographic projections of the first connecting hole t1 and the target device n2 have an overlapping portion, the airflow entering the first cavity Q1 through the first connecting hole t1 can dissipate heat for the target device n2, and the airflow generated by the air cooling module 180 can be further used to improve the heat dissipation effect of the target device n2.

[0153] It should be noted that, in combination with the contents illustrated in some of the aforementioned embodiments, the target device n2 may be the device 120 exposed through the opening k illustrated in some of the aforementioned embodiments. Accordingly, the heat dissipation methods related to the device 120 exposed through the opening k and the target device n2 may also be implemented with reference to each other, which will not be described in detail herein.

[0154] According to some embodiments of this application, please continue to refer to Figure 4 , Figure 11 and Figure 14 The energy storage converter 100 further includes a target circuit board Dm. The target circuit board Dm is disposed in the first area z1 and supported by the second partition wall 170. The target device n2 is located on a side of the target circuit board Dm away from the second partition wall 170. A second connecting hole t2 connected to the first connecting hole t1 is disposed on the target circuit board Dm. The orthographic projection of the second connecting hole t2 on the reference plane E and the orthographic projection of the target device n2 on the reference plane E have an overlapping portion.

[0155] The object circuit board Dm can be a printed circuit board (PCB), which can also be called a printed circuit board, and can provide support for the device 120 that realizes different electrical functions, and can also serve as a carrier for the device 120 to realize electrical interconnection. The object circuit board Dm can be made by electronic printing and other processes, and the object circuit board Dm can be arranged in a flat plate shape. The object device n2 is located on the side of the object circuit board Dm away from the second partition wall 170. The object device n2 can be arranged on the object circuit board Dm, or it can be not arranged on the object circuit board Dm. No specific limitation is made here. Figure 11 and Figure 14 In the illustrated situation, the target device n2 is not disposed on the target circuit board Dm, and the target device n2 is disposed on the third circuit board D3 located on the side of the target circuit board Dm away from the second partition wall 170. The relevant implementation of the third circuit board D3 can be understood in combination with the implementation described below, and will not be described in detail here.

[0156] Specifically, with reference to Figure 16 , Figure 16 Schematic diagram of the projection relationship between the second connecting hole t2 and the object device n2 in some embodiments of the present application, the orthographic projection of the object device n2 on the reference plane E is the sixth projection y6, the orthographic projection of the second connecting hole t2 on the reference plane E is the seventh projection y7, and the sixth projection y6 and the seventh projection y7 have an overlapping portion. Figure 16 , it is illustrated that the seventh projection y7 is located within the sixth projection y6.

[0157] By providing the target circuit board Dm, it is beneficial to realize the electrical connection between the devices 120 with different electrical functions and arrange the devices 120. By providing the second communication hole t2 connected with the first communication hole t1 on the target circuit board Dm, the airflow in the second cavity Q2 can enter the first cavity Q1 through the first communication hole t1 and the second communication hole t2, and dissipate the heat of the target device n2, so that the overall structure is simpler and more compact while improving the heat dissipation effect.

[0158] According to some embodiments of this application, please continue to refer to Figure 4 and Figure 11, the energy storage converter 100 further includes a first circuit board D1, a second circuit board D2, a third circuit board D3, and a fourth circuit board D4. Among all the devices 120, there are multiple devices 120 respectively disposed on the first circuit board D1, the second circuit board D2, the third circuit board D3, and the fourth circuit board D4. Along the direction from the first side c1 to the second side c2, the first circuit board D1 and the second circuit board D2 are disposed in the second sub-chamber Q12. Along the direction from the second sub-chamber Q12 to the first sub-chamber Q11, the second circuit board D2 and the third circuit board D3 are spaced apart, and the devices 120 disposed on the third circuit board D3 are exposed through the opening k. The fourth circuit board D4 is disposed in the first sub-chamber Q11 and located in the first region z1, and the fourth circuit board D4 is carried on the first partition wall 150. Among them, the second circuit board D2 is electrically connected between the first circuit board D1 and the third circuit board D3, and the third circuit board D3 is electrically connected between the second circuit board D2 and the fourth circuit board D4.

[0159] It should be noted that, in Figure 4 and Figure 11 In the illustrated cases, to facilitate showing the first circuit board D1, the second circuit board D2, the third circuit board D3, and the fourth circuit board D4, some of the devices 120 are omitted. The first circuit board D1, the second circuit board D2, the third circuit board D3, and the fourth circuit board D4 can be printed circuit boards, which can provide support for the devices 120 to achieve different electrical functions, and at the same time can be used as a carrier for the electrical interconnection of the devices 120. Similarly, the first circuit board D1, the second circuit board D2, the third circuit board D3, and the fourth circuit board D4 can be made by processes such as electronic printing, and the first circuit board D1, the second circuit board D2, the third circuit board D3, and the fourth circuit board D4 can be arranged in a flat plate shape.

[0160] Thus, by arranging the first circuit board D1, the second circuit board D2, the third circuit board D3, and the fourth circuit board D4 according to the above illustrated cases and cooperating with the housing 140, it is beneficial to achieve electrical connection and improve the heat dissipation effect. Compared with the way of arranging the first circuit board D1, the second circuit board D2, the third circuit board D3, and the fourth circuit board D4 in a stacked and spaced manner or a flat-laying manner, the arrangement method of the circuit boards illustrated in the embodiments of the present application helps to achieve a more compact layout and improve the space utilization rate. And, in such an arrangement method of the circuit boards, it is also possible to cooperate with the housing 140 to achieve a layout that is more conducive to heat dissipation control.

[0161] According to some embodiments of the present application, please continue to refer to Figure 4 and Figure 11 , along the direction from the second sub-chamber Q12 to the first sub-chamber Q11, the first circuit board D1 and the fourth circuit board D4 are spaced apart and relatively arranged.

[0162] In this way, not only can the space utilization rate in the first cavity Q1 be further improved, but also it is beneficial to form the required opening k, which facilitates the electrical connection between the fourth circuit board D4 and the third circuit board D3. In addition, in the case of forming the required opening k, it is beneficial to cooperate with the relevant implementation manners of the cover 140 shown in some of the foregoing embodiments to further improve the heat dissipation effect.

[0163] Of course, in some other embodiments, along the direction from the second sub-cavity Q12 to the first sub-cavity Q11, the first circuit board D1 and the fourth circuit board D4 may not be completely opposite to each other. For example, the orthographic projection of the first circuit board D1 on the reference plane E and the orthographic projection of the fourth circuit board D4 on the reference plane E have an overlapping part, and the orthographic projection of the third circuit board D3 on the reference plane E and the orthographic projection of the fourth circuit board D4 on the reference plane E have an overlapping part. The space in the first sub-cavity Q11 can be used to correspondingly arrange the fourth circuit board D4, and no specific limitation is made here.

[0164] According to some embodiments of the present application, please continue to refer to Figure 4 and Figure 11 , the first circuit board D1 is configured as a power board, the second circuit board D2 is configured as a bus bar board, the third circuit board D3 is configured as an AC output board, and the fourth circuit board D4 is configured as an electromagnetic interference suppression board.

[0165] The power board is mainly used for processing the input electric energy, such as transformation and amplification. The bus bar board is mainly used for current distribution and collection. The AC output board is mainly used for converting the processed electric energy into a qualified AC signal for output, providing an AC power supply for external devices. The AC output board may include circuits such as filtering, amplification, and modulation. The electromagnetic interference suppression board is a circuit board used to suppress internal or external electromagnetic interference of the device, which can reduce the influence of electromagnetic interference on the device itself and surrounding electronic devices.

[0166] The power board efficiently transmits the processed electric energy to the bus bar board, and the bus bar board can evenly distribute the current to the AC output board. This connection method can reduce line losses and improve the stability and efficiency of current transmission between the boards. As the hub of current distribution, the bus bar board enables the power output by the power board to be reliably distributed to the AC output board. The AC output board converts the processed electric energy into an AC signal for output, and it is connected to the electromagnetic interference suppression board. The electromagnetic interference suppression board can filter and shield the output AC signal, reduce the influence of electromagnetic interference on the AC signal, improve the stability and accuracy of the output signal, and improve the signal quality.

[0167] Thus, by connecting the circuit boards in the above connection method, it is convenient for maintenance or replacement, and has good maintainability and scalability.

[0168] According to some embodiments of the present application, please continue to refer to Figure 4 andFigure 11 , and with reference to Figure 17 , Figure 17 FIG. is a schematic diagram of the air flow of the energy storage converter 100 in some other embodiments of the present application. Along the third direction F3, the second circuit board D2 and the third circuit board D3 are spaced apart and define a second channel p2. The second sub-chamber Q12 has a wall structure a that is opposite to and spaced apart from the first sub-chamber Q11 along the third direction F3. The wall structure a is provided with an air guiding hole w2 that cooperates with the second channel p2, and the air guiding hole w2 is used to introduce air flow into the second channel p2.

[0169] Specifically, with reference to Figure 17 , the air guiding hole w2 can be located upstream of the second channel p2. Of course, it is also possible to set the corresponding first communication hole t1 and the second communication hole t2 with reference to Figure 14 and the content shown in some of the foregoing embodiments. The first communication hole t1 can be regarded as the air guiding hole w2, and the second communication hole t2 can be provided on the second circuit board D2. The second circuit board D2 can be regarded as the object circuit board Dm shown in some of the foregoing embodiments.

[0170] In this way, by setting the air guiding hole w2, the air flow outside the first chamber Q1 can be introduced into the second channel p2, so that the second circuit board D2 and the third circuit board D3 can be further cooled. When the pins of the device 120 provided on the third circuit board D3 are located in the second channel p2, the air flow in the second channel p2 can be further used to cool the pins of the device 120, improving the cooling effect and improving the heat accumulation at the pins of the device 120. Exemplarily, the device 120 can be a relay.

[0171] According to some embodiments of the present application, please continue to refer to Figure 4 , Figure 11 , Figure 13 and Figure 17 , the energy storage converter 100 further includes a second partition wall 170. The second partition wall 170 is provided in the box body 110 and divides the box body 110 into a first chamber Q1 and a second chamber Q2 provided along the third direction F3. Along the direction from the second sub-chamber Q12 to the first sub-chamber Q11, the second chamber Q2 is located upstream of the first chamber Q1. The second chamber Q2 has a third side c3 and a fourth side c4 that are oppositely arranged along the second direction F2, and the direction from the third side c3 to the fourth side c4 is the same as the direction from the first side c1 to the second side c2. The energy storage converter 100 further includes an air cooling module 180 provided in the second chamber Q2, and the air cooling module 180 is configured to generate a third air flow that flows into the second chamber Q2 from the third side c3 and flows out from the fourth side c4. Among them, the side of the second partition wall 170 facing the second sub-chamber Q12 constitutes the wall structure a, and the air guiding hole w2 is used to introduce a part of the third air flow into the second channel p2.

[0172] In this way, the airflow generated by the air-cooling module 180 can be further utilized to improve the heat dissipation effect of the second circuit board D2, the third circuit board D3, and the corresponding device 120.

[0173] It should be noted that regarding the related embodiments of the air intake hole w2, the second circuit board D2, the third circuit board D3, the target circuit board Dm, the first communication hole t1, and the second communication hole t2, under the condition that heat dissipation is facilitated, they can be implemented with reference to each other, which will not be elaborated here and will not be specifically limited.

[0174] According to some embodiments of the present application, please continue to refer to Figure 3 、 Figure 4 、 Figure 6 、 Figure 11 and Figure 13 , the air-cooling module 180 includes a fan 181 and a radiator 182, and among all the devices 120, there are also devices 120 disposed in the second cavity Q2. Along the direction from the third side c3 to the fourth side c4, the fan 181, the radiator 182, and the devices 120 disposed in the second cavity Q2 are arranged at intervals. A plurality of air guiding channels extending along the direction from the third side c3 to the fourth side c4 are defined on the radiator 182.

[0175] In this way, the airflow generated by the operation of the fan 181 can flow along the air guiding channels extending along the direction from the third side c3 to the fourth side c4 on the radiator 182. The air guiding channels play a good guiding role, enabling the airflow to more precisely reach the surface of the devices 120 that need to be disposed in the second cavity Q2, improving the contact efficiency between the airflow and the devices 120, and thus being able to more effectively take away heat. In addition, the design of the air guiding channels increases the contact area between the radiator 182 and the airflow. When the airflow passes through the air guiding channels, it can conduct more sufficient heat exchange with the radiator 182 and quickly take away the heat absorbed by the radiator 182. Moreover, the orderly airflow flowing in the channels can make the heat exchange process more stable and efficient, further improving the heat dissipation effect.

[0176] According to some embodiments of the present application, please continue to refer to Figure 6 , and in combination with reference to Figure 18 , Figure 18 is a schematic three-dimensional structure diagram of the cooperation of the air-cooling module 180, the second partition wall 170, and the device 120 in some embodiments of the present application. An open portion X is provided on the second partition wall 170, and the radiator 182 is disposed on the side of the second partition wall 170 facing away from the second sub-cavity Q12. The open portion X corresponds to the radiator 182 and exposes at least a part of the side of the radiator 182 facing the second sub-cavity Q12. A plurality of devices 120 are provided on the part of the radiator 182 exposed via the open portion. Exemplarily, the device 120 disposed on the part of the radiator 182 exposed via the open portion can be an IGBT.

[0177] In this way, the structure in which the open portion cooperates with the radiator 182 can be utilized to further dissipate heat from the device 120 by the air cooling module 180, thereby further improving the heat dissipation effect.

[0178] It should be noted that the open portion can be a hole formed in the second partition wall 170 or can be defined by the split second partition wall 170. When the second partition wall 170 is of a split structure, the second partition wall 170 includes two parts, and these two parts are connected to the side of the radiator 182 facing the second sub-chamber Q12. In Figure 18 FIG., the case where the second partition wall 170 includes two parts is shown. No specific limitation is made here.

[0179] Of course, in some other embodiments, a corresponding port structure can also be provided on the second partition wall 170, and the port structure can cooperate with the device 120 or the circuit board in the second sub-chamber Q12 to further improve the heat dissipation effect.

[0180] According to some embodiments of the present application, please continue to refer to Figures 3 to 5 and, in combination with reference to Figure 19 FIG., Figure 19 FIG. is a schematic view of the other side structure of a part of the structure of the energy storage converter 100 in some other embodiments of the present application. The second region z2 includes a first sub-region z21 located in the first sub-chamber Q11 and a second sub-region z22 located in the second sub-chamber Q12. The average heat generation amount of all the devices 120 provided in the first sub-region z21 is greater than the average heat generation amount of all the devices 120 provided in the second sub-region z22, and the second air flow generated by the air flow generating device 130 is configured to flow through at least the first sub-region z21.

[0181] Since the average heat generation amount of all the devices 120 in the second region z2 is less than the average heat generation amount of all the devices 120 in the first region z1, the average heat generation amount of all the devices 120 in the second region z2 is relatively small. The second region z2 is divided into a first sub-region z21 and a second sub-region z22, and the devices 120 in the first sub-region z21 and the second sub-region z22 are further distinguished, so that the air flow can be correspondingly distributed according to the amount of average heat generation. By at least making the air flow flow through the first sub-region z21, the air flow can be specifically directed to the first sub-region z21 with a large heat generation amount, and the cooling capacity of the air flow can be fully utilized to improve the heat dissipation effect.

[0182] It should be noted that, in combination with reference to Figures 3 to 5, on the first sub-region z21, a fifth circuit board D5 and a sixth circuit board D6 can be arranged, and corresponding devices 120 can be arranged on the fifth circuit board D5 and the sixth circuit board D6. Similarly, relevant circuit boards can also be arranged on the second sub-region z22. Details are not described here.

[0183] According to some embodiments of the present application, please continue to refer to Figures 3 to 5 , Figure 19 , the second air flow generated by the air flow generating device 130 is configured to be able to flow through the first sub-region z21 and the second sub-region z22. The fluid path of the second air flow flowing through the first sub-region z21 and the fluid path of the second air flow flowing through the second sub-region z22 are arranged along the third direction F3.

[0184] Arranging two fluid paths along the third direction F3 respectively can reduce the mutual interference of the air flow during the flow process. Compared with other arrangement methods, this method can make the air flow flow through each sub-region more smoothly, improve the turbulent flow and eddy current phenomena of the air flow, reduce the energy loss of the air flow, improve the utilization efficiency of the air flow, and thus improve the overall heat dissipation performance.

[0185] According to some embodiments of the present application, please continue to refer to Figures 3 to 5 , Figure 19 , and in combination with reference to Figure 20 , Figure 20 is a schematic structural diagram of the cooperation between the second generating unit 132 and the first partition wall 150 in some embodiments of the present application. The air flow generating device 130 includes a second generating unit 132 arranged in the second region z2. Along the direction from the first side c1 to the second side c2, the second generating unit 132 is located downstream of the first partition wall 150. A part of the air inlet f of the second generating unit 132 is communicated with the first sub-chamber Q11, and another part of the air inlet f of the second generating unit 132 is communicated with the second sub-chamber Q12.

[0186] Exemplarily, the second generating unit 132 can be configured as a fan component.

[0187] The second generation unit 132 is located downstream of the first partition wall 150. A part of its air inlet f communicates with the first sub-chamber Q11, and the other part communicates with the second sub-chamber Q12. In this way, the airflows in the first sub-chamber Q11 and the second sub-chamber Q12 can be mixed at the second generation unit 132, optimizing the air flow organization. By reasonably designing the proportion of the air inlet f, the flow rates of the airflows from different sub-chambers entering the second generation unit 132 can be adjusted, making the mixed airflow more uniform and improving the cooling effect on different heat-generating regions. In addition, by arranging the second generation unit 132 in the second region z2 and downstream of the first partition wall 150, the internal space of the device is effectively utilized, making the layout of the air flow generating device 130 more compact and reasonable. This layout can achieve complex air flow distribution functions within a limited space, improving the space utilization rate and facilitating the miniaturization design of the device.

[0188] According to some embodiments of the present application, please continue to refer to Figure 19 and Figure 20 , the air inlet f of the second generation unit 132 includes a first sub-inlet f1 and a second sub-inlet f2 that communicate with each other. The first sub-inlet f1 and the second sub-inlet f2 are arranged along the third direction F3. The first sub-inlet f1 communicates with the first sub-chamber Q11, and the second sub-inlet f2 communicates with the second sub-chamber Q12. The opening k area of the first sub-inlet f1 is larger than the opening k area of the second sub-inlet f2.

[0189] Since the average heat generation of the devices 120 in the first sub-region z21 is greater, and the opening k area of the first sub-inlet f1 is larger than that of the second sub-inlet f2, more air flow can enter the second generation unit 132 from the first sub-chamber Q11. This matches the requirement that the first sub-chamber Q11 has a large heat generation and needs more cooling air flow, enabling more efficient heat dissipation and maintaining temperature balance in each region.

[0190] It can be understood that the average heat generation of the devices 120 in the first sub-region z21 is greater than that of the devices 120 in the second sub-region z22, and the average heat generation of the devices 120 in the first region is greater than that of the devices 120 in the first sub-region z21. In this way, a hierarchical structural arrangement form of different regions is formed, and the air flow is reasonably controlled according to the heat generation conditions of each region, enabling the air flow to be fully utilized within the device. This improves the situation where too much air flow is wasted in the region with low heat generation, while there is insufficient air flow in the region with high heat generation, increasing the overall utilization efficiency of the air flow and reducing energy consumption. At the same time, due to the different heat generations of the devices in different regions, through this structural arrangement and the air flow control method shown in the above-mentioned some embodiments, the cooling air flow can be more accurately distributed according to the actual heat dissipation requirements of each region, thereby improving the overall heat dissipation effect of the device and further enhancing the stability and reliability of the device.

[0191] According to some embodiments of the present application, please continue to refer toFigure 6 , the first partition wall 150 has a first side b1 and a second side b2 that are oppositely arranged along the second direction F2, and the direction in which the first side b1 points to the second side b2 is the same as the direction in which the first side c1 points to the second side c2. The opening k is configured as a notch that at least penetrates the second side b2.

[0192] The notch penetrates the second side b2, enabling the air flow between the first sub-chamber Q11 and the second sub-chamber Q12 to circulate more smoothly. Since the direction in which the first side b1 points to the second side b2 is the same as the direction in which the first side c1 points to the second side c2, the air flow can exchange more directly through the notch in this direction, reducing air flow resistance, improving the air flow circulation efficiency, contributing to the uniform distribution of the air flow throughout the region, and enhancing the heat dissipation effect. At the same time, through this notch and in cooperation with the cover 140, the air flow can be reasonably distributed between the two sub-chambers according to the design requirements. According to the heat generation of the devices 120 in different sub-chambers, the cooling air flow can be more accurately guided to the areas that need heat dissipation. In addition, this simple notch structure is relatively easy to process and manufacture, reducing the manufacturing difficulty and cost of the first partition wall 150. At the same time, during the installation process, this structure is also convenient for cooperation and assembly with other components, improving the installation efficiency and reducing the complexity during the installation process.

[0193] According to some embodiments of the present application, please continue to refer to Figure 6 , the first partition wall 150 further has a third side b3 and a fourth side b4 that are oppositely arranged along the first direction F1. The third side b3 is farther from the second region z2 than the fourth side b4, and both the third side b3 and the fourth side b4 are connected between the first side b1 and the second side b2. The opening k is configured as a notch that penetrates the second side b2 and the third side b3.

[0194] The opening k penetrates the second side b2 and the third side b3, resulting in a larger air flow exchange area between the first sub-chamber Q11 and the second sub-chamber Q12, and enabling the air flow to mix from more directions. Compared with the notch that only penetrates the second side b2, this structure can allow the air flow to form a more complex flow pattern in the chamber, promoting better mixing of air flows with different temperatures and speeds, and thus more evenly distributing to each sub-region, further improving the uniformity of heat dissipation. And, in combination with the circuit boards and the corresponding devices 120 shown in some of the foregoing embodiments, it is also more conducive to the arrangement of the corresponding devices 120 and the connection between the circuit boards.

[0195] According to some embodiments of the present application, please continue to refer to Figure 6 , the first partition wall 150 includes a first partition portion 151 and a second partition portion 152 that are connected to each other. The first partition portion 151 is located in the first region z1, and the second partition portion 152 is located in the second region z2. Along the direction in which the first side b1 points to the second side b2, the first partition portion 151 and the opening k are arranged in sequence. Among them, inFigure 6 The first partition portion 151 and the second partition portion 152 are distinguished by a dashed line, but not limited thereto. The direction of the first side b1 pointing to the second side b2 is parallel to the second direction F2.

[0196] Along the direction of the first side b1 pointing to the second side b2, the first partition portion 151 and the opening k are arranged in sequence, so that the air flow guided by the first partition portion 151 can more smoothly enter the second region z2 through the opening k, realizing the orderly flow of the air flow between different regions, improving the utilization efficiency of the air flow, and helping to enhance the overall heat dissipation effect. At the same time, the devices 120 provided in the first sub-chamber Q11 and located in the first region z1 can be arranged upstream of the opening k, which is not only beneficial to the arrangement of the devices 120, but also can improve the heat dissipation effect of the devices 120 provided in the first sub-chamber Q11 and located in the first region z1.

[0197] Of course, in some other embodiments, the opening k can also be partially arranged around the first partition portion 151, and no specific limitation is made here.

[0198] Next, with reference to the content shown in the above embodiments, an exemplary description will be given of the air flow path involved in the energy storage converter 100 provided in the embodiments of the present application, but not limited thereto.

[0199] In some embodiments, please continue to refer to Figure 14 and, in combination with reference to Figure 1 , Figure 2 , Figure 5 and Figure 6 , the first air flow g1 enters the accommodation chamber Q13 through the first ventilation opening h1 on the first wall 111. A part of the first air flow g1 flows into the part of the first sub-chamber Q11 located in the first region z1 through the accommodation chamber Q13, and enters the second sub-chamber Q12 through the first channel p1 and the opening k defined by the cover body 140, and flows out from the second ventilation opening h2 on the second wall 112. Another part of the first air flow g1 flows into the part of the second sub-chamber Q12 located in the first region z1 through the accommodation chamber Q13, and flows out from the second ventilation opening h2 on the second wall 112 through the second cover section 142. The third air flow g3 enters the second chamber Q2 through the third ventilation opening h3 on the first wall 111. A part of the third air flow g3 enters the second channel p2 through the first communication hole t1 and the second communication hole t2, and flows out from the second ventilation opening h2 on the second wall 112. Another part of the third air flow g3 flows out through the fourth ventilation opening h4 on the second wall 112.

[0200] In some embodiments, please continue to refer to Figure 17 , different from the situation shown in Figure 14 , a part of the third air flow g3 enters the second channel p2 through the air guiding hole w2 and flows out from the second ventilation opening h2 on the second wall 112.

[0201] In some embodiments, please refer to Figure 21 and, in combination with reference to Figure 12 , Figure 21 which is a schematic diagram of the air flow of the energy storage converter 100 in still other embodiments of the present application. Different from the situation shown in Figure 14 , the third air flow g3 flows in and out within the second chamber Q2. A part of the first air flow g1 passes through the air guiding opening w1 and the air guiding member 160 via a part of the first cover section 141 and enters the second sub-chamber Q12.

[0202] In some embodiments, please refer to Figure 22 , Figure 22 which is a schematic diagram of the air flow of the energy storage converter 100 in still other embodiments of the present application. The second air flow g2 enters the accommodation chamber Q13 through the first ventilation opening h1 on the first wall 111. The second air flow g2 flows into a part of the first sub-chamber Q11 located in the second region z2 via the accommodation chamber Q13 and flows out through the second ventilation opening h2 on the second wall 112.

[0203] In some embodiments, please refer to Figure 23 , Figure 23 which is a schematic diagram of the air flow of the energy storage converter 100 in still other embodiments of the present application. The second air flow g2 enters the accommodation chamber Q13 through the first ventilation opening h1 on the first wall 111. A part of the second air flow g2 flows into a part of the first sub-chamber Q11 located in the second region z2 via the accommodation chamber Q13 and flows out through the second ventilation opening h2 on the second wall 112. Another part of the second air flow g2 flows into a part of the second sub-chamber Q12 located in the second region z2 via the accommodation chamber Q13 and flows out through the second ventilation opening h2 on the second wall 112.

[0204] According to some embodiments of the present application, please continue to refer to Figure 1 , the energy storage converter 100 may have at least one of a photovoltaic interface, a battery interface, a grid input interface, a DC output interface, and an AC output interface.

[0205] Among them, the energy storage converter 100 can be connected to a solar cell or other renewable energy power generation systems through the photovoltaic interface. The energy storage converter 100 is connected to a battery through the battery interface. The battery can store electric energy so that the electric energy of the battery can be converted and output through the energy storage converter 100. The grid input interface can access the high-voltage electric energy of the grid and output it to low-voltage electrical equipment or systems after being stepped down by the energy storage converter 100. The AC output interface can be connected to products that require alternating current such as household appliances. The energy storage converter 100 converts the alternating current into direct current and outputs it to the appliances. The DC output interface can be connected to devices that require direct current power such as charging piles.

[0206] In this way, it can be flexibly set according to actual usage requirements, improving the adaptability of the energy storage converter 100 to meet the usage requirements in different scenarios, and no specific limitation is made here.

[0207] According to some embodiments of the present application, an energy storage system is provided, including the energy storage converter 100 in any of the above embodiments.

[0208] In some embodiments, the energy storage system further includes a battery, and the aforementioned energy storage converter 100 is electrically connected to the battery. The energy storage converter 100 can convert the energy generated by solar energy, wind power generation, or fuel cells into direct current electricity and store it in the battery, and output the electrical energy in the battery when needed. The energy storage system can provide reliable energy reserves for users and provide backup power for users in case of power outage or insufficient power, facilitating user use.

[0209] The energy storage system also has the same advantages as the aforementioned energy storage converter 100, which will not be elaborated here.

[0210] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0211] The above-described embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A energy storage converter, characterized in that, Comprising: A box body having a first cavity, the first cavity including a first region and a second region arranged along a first direction, the first cavity having a first side and a second side oppositely arranged along a second direction, the first direction and the second direction intersecting each other; A plurality of devices, at least disposed in the first region and the second region, and the average heat generation amount of all the devices disposed in the first region is greater than the average heat generation amount of all the devices disposed in the second region; An air flow generating device disposed in the first cavity; the air flow generating device is configured to generate a first air flow flowing through the first region and a second air flow flowing through the second region; both the first air flow and the second air flow are configured to flow in from the first side and flow out from the second side; A cover body disposed in the first region and defining a first channel; the air flow path defined by the first channel constitutes at least part of the flow path of the first air flow, and at least part of at least some of the devices located in the first region are located inside the cover body; And A first partition wall disposed in the first cavity and dividing the first cavity into a first sub-cavity and a second sub-cavity arranged along a third direction; a part of both the first sub-cavity and the second sub-cavity is located in the first region, and the other part is located in the second region; an opening is provided on the first partition wall, the opening is located in the first region, and the opening communicates the first sub-cavity and the second sub-cavity; Wherein, the cover body is at least disposed in the first sub-cavity, and at least part of at least some of the devices disposed in the first sub-cavity and located in the first region are located inside the cover body; The opening is in communication with the inside of the cover body, and the orthographic projection of the opening on a reference plane and the orthographic projection of the cover body on the reference plane have an overlapping part; the reference plane is a plane perpendicular to the third direction, and the first direction, the second direction and the third direction intersect pairwise.

2. The energy storage converter according to claim 1, characterized in that, Along the direction from the first side to the second side, a part of the cover body is disposed in the first sub-cavity, and at least part of the other part of the cover body extends into the second sub-cavity through the opening; At least part of at least some of the devices disposed in the second sub-cavity are located inside the cover body.

3. The energy storage converter according to claim 2, wherein, The cover body has a stepped portion; The stepped portion is configured to be able to guide the first air flow located in the first sub-cavity to enter the second sub-cavity through the opening.

4. The energy storage converter according to claim 3, characterized in that, Define the part of the cover body disposed in the first sub-cavity as a first cover section, and the part of the cover body extending into the second sub-cavity through the opening as a second cover section; The connection part between the first cover section and the second cover section defines the stepped portion.

5. The energy storage converter according to claim 2, wherein The cover body has an avoidance portion; The orthographic projection of the avoidance portion on the reference plane and the orthographic projection of the opening on the reference plane have an overlapping part.

6. The energy storage converter according to claim 5, wherein Define the part of the cover body disposed in the first sub-cavity as a first cover section, and the part of the cover body extending into the second sub-cavity through the opening as a second cover section; along the direction from the first sub-cavity to the second sub-cavity, the second cover section is located downstream of the first cover section to define the avoidance portion; And / or A notch portion is provided on the cover body along the first direction, and an orthographic projection of the notch portion on the reference plane overlaps with an orthographic projection of the opening on the reference plane.

7. The energy storage converter according to claim 2, characterized in that, Define a part of the cover body disposed in the first sub-chamber as a first cover section, and a part of the cover body extending into the second sub-chamber through the opening as a second cover section; The first cover section and the second cover section are detachably connected.

8. The energy storage converter according to any one of claims 1-7, characterized in that, Along the direction from the first side to the second side, the first partition wall is spaced from the first side of the first chamber and defines a receiving cavity for receiving some devices; Both the first sub-chamber and the second sub-chamber communicate with the receiving cavity; along the direction from the first side to the second side, the receiving cavity is located upstream of the first sub-chamber and the second sub-chamber, so that the first air flow flows into the first region through the receiving cavity, and the second air flow flows into the second region through the receiving cavity.

9. The energy storage converter according to claim 8, wherein The air flow generating device includes a first generating unit; The first generating unit includes: A first generating member disposed corresponding to the entrance of the first channel; the first generating member is configured to be able to transport the first air flow to the first channel; and A second generating member disposed corresponding to the exit of the first channel; the second generating member is configured to output the first air flow in the first channel.

10. The energy storage converter according to claim 9, characterized in that, The energy storage converter further includes a temperature detecting member; The temperature detecting member is disposed corresponding to the opening, and the temperature detecting member is used to detect the temperature of the device exposed through the opening; The first generating member is configured to be able to adjust its working state in response to the detection information of the temperature detecting member.

11. The energy storage converter according to any one of claims 1-7, characterized in that, A wind guiding opening is provided on the first partition wall, and the wind guiding opening communicates the first sub-chamber and the second sub-chamber; Along the direction from the first side to the second side, the wind guiding opening is located upstream of the opening.

12. The energy storage converter according to claim 11, wherein, Along the direction from the first side to the second side, the wind guiding opening is located downstream of the target device; The target device is a device that is disposed in the first sub-chamber and within the first region and the cover body, and is located upstream of the opening along the direction from the first side to the second side.

13. The energy storage converter according to claim 12, wherein Along the direction from the first side to the second side, the devices disposed in the first sub-chamber and within the first region and the cover body are all located upstream of the opening.

14. The energy storage converter according to claim 11, characterized in that, The energy storage converter further includes a wind guiding member; The wind guiding member is disposed at the edge of the wind guiding opening and is located in the second sub-chamber; the wind guiding member has a first end and a second end that are oppositely disposed along the extending direction of the wind guiding member, and the first end is connected to the edge of the wind guiding opening; Along the direction from the first side to the second side, the first end is located upstream of the second end; the direction in which the first end points to the second end intersects with the third direction.

15. The energy storage converter according to any one of claims 1-7, characterized in that, The energy storage converter further includes a second partition wall; The second partition wall is disposed in the box body, and divides the box body into the first cavity and the second cavity disposed along the third direction; along the direction from the second sub-cavity to the first sub-cavity, the second cavity is located upstream of the first cavity; the second cavity has a third side and a fourth side disposed opposite to each other along the second direction; The energy storage converter further includes an air cooling module disposed in the second cavity, the air cooling module being configured to generate a third air flow flowing into the second cavity from the third side and flowing out from the fourth side; A direction from the third side to the fourth side is in the same direction as a direction from the first side to the second side.

16. The energy storage converter according to claim 15, characterized in that, The second partition wall is provided with a first communicating hole connecting the first cavity and the second cavity; The orthographic projection of the first connecting hole on the reference plane and the orthographic projection of the target device on the reference plane have an overlapping portion; the target device is a device arranged on a portion of the second partition wall corresponding to the opening along the third direction.

17. The energy storage converter according to claim 16, wherein The energy storage converter also includes a target circuit board; The target circuit board is arranged in the first area and supported by the second partition wall; the target device is located on a side of the target circuit board away from the second partition wall, and a second communication hole connected to the first communication hole is provided on the target circuit board; An orthographic projection of the second communication hole on the reference plane and an orthographic projection of the target device on the reference plane have an overlapping portion.

18. The energy storage converter according to any one of claims 1-7, characterized in that, The energy storage converter further includes a first circuit board, a second circuit board, a third circuit board and a fourth circuit board; all the devices include a plurality of devices respectively arranged on the first circuit board, the second circuit board, the third circuit board and the fourth circuit board; The first circuit board and the second circuit board are arranged in the second sub-cavity along the direction from the first side to the second side; the second circuit board and the third circuit board are arranged at intervals along the direction from the second sub-cavity to the first sub-cavity, and the device arranged on the third circuit board is exposed through the opening; the fourth circuit board is arranged in the first sub-cavity and located in the first area, and the fourth circuit board is carried by the first partition wall; The second circuit board is electrically connected between the first circuit board and the third circuit board, and the third circuit board is electrically connected between the second circuit board and the fourth circuit board.

19. The energy storage converter according to claim 18, characterized in that, The first circuit board is configured as a power board, the second circuit board is configured as a busbar, the third circuit board is configured as an AC output board, and the fourth circuit board is configured as an electromagnetic interference suppression board.

20. The energy storage converter according to claim 18, characterized in that, Along the third direction, the second circuit board and the third circuit board are arranged at intervals and define a second channel; The second sub-cavity has a wall structure opposite to and spaced from the first sub-cavity along the third direction, and the wall structure is provided with an air induction hole matched with the second channel, and the air induction hole is used to introduce airflow into the second channel.

21. The energy storage converter according to claim 20, wherein The energy storage converter also includes a second partition wall; The second partition wall is disposed within the box body and divides and defines the first chamber and the second chamber within the box body, which are arranged along the third direction; along the direction from the second sub-chamber to the first sub-chamber, the second chamber is located upstream of the first chamber; the second chamber has a third side and a fourth side that are oppositely arranged along the second direction, and the direction from the third side to the fourth side is the same as the direction from the first side to the second side. The energy storage inverter further includes an air-cooling module disposed within the second chamber, and the air-cooling module is configured to generate a third air flow that flows into the second chamber from the third side and flows out from the fourth side. Wherein, one side of the second partition wall facing the second sub-chamber constitutes the wall structure, and the air guiding hole is used to introduce a part of the third air flow into the second channel.

22. The energy storage converter according to any one of claims 1-7, characterized in that, The second region includes a first sub-region located in the first sub-chamber and a second sub-region located in the second sub-chamber. The average heat generation amount of all the devices disposed in the first sub-region is greater than the average heat generation amount of all the devices disposed in the second sub-region, and the second air flow generated by the air flow generating device is configured to flow through at least the first sub-region.

23. The energy storage converter according to claim 22, characterized in that, The second air flow generated by the air flow generating device is configured to be able to flow through the first sub-region and the second sub-region. The fluid path of the second air flow flowing through the first sub-region and the fluid path of the second air flow flowing through the second sub-region are arranged along the third direction.

24. The energy storage converter according to claim 23, wherein The air flow generating device includes a second generating unit disposed in the second region. Along the direction from the first side to the second side, the second generating unit is located downstream of the first partition wall; a part of the air inlet of the second generating unit communicates with the first sub-chamber, and another part of the air inlet of the second generating unit communicates with the second sub-chamber.

25. The energy storage converter according to claim 24, wherein The air inlet of the second generating unit includes a first sub-inlet and a second sub-inlet that communicate with each other. The first sub-inlet and the second sub-inlet are arranged along the third direction, the first sub-inlet communicates with the first sub-chamber, and the second sub-inlet communicates with the second sub-chamber; the opening area of the first sub-inlet is larger than the opening area of the second sub-inlet.

26. The energy storage converter according to any one of claims 1-7, characterized in that The first partition wall has a first side and a second side that are oppositely arranged along the second direction, and the direction from the first side to the second side is the same as the direction from the first side to the second side. The opening is configured as a notch that penetrates at least the second side.

27. The energy storage converter according to claim 26, wherein The first partition wall further has a third side and a fourth side that are oppositely arranged along the first direction, the third side is farther away from the second region than the fourth side, and both the third side and the fourth side are connected between the first side and the second side. The opening is configured as a notch that penetrates the second side and the third side.

28. The energy storage converter according to claim 27, wherein The first partition wall includes a first partition portion and a second partition portion that are connected to each other, the first partition portion is located in the first region, and the second partition portion is located in the second region. Along the direction from the first side to the second side, the first partition portion and the opening are arranged in sequence.

29. A energy storage system, characterized in that, Including the energy storage converter according to any one of claims 1-28.

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