Energy storage converter

Abstract

The embodiment of the invention relates to the field of energy storage, and provides an energy storage converter which is characterized in that an accommodating space is formed in a shell; the liquid cooling plate is located in the accommodating space; the shell comprises a first side plate, a second side plate, a third side plate, a fourth side plate, a fifth side plate and a sixth side plate, the fifth side plate is provided with an opening, and the non-opening part of the fifth side plate is provided with a wire outlet structure; the inner core is fixed in the shell, and an output wire of the inner core extends out of the shell from the wire outlet structure; the shell further comprises a limiting structure. The inner core comprises a magnetic core and a coil; the fixing part abuts against the inner core. Each copper bar is fixed on the fixing part, a first through hole penetrating through the copper bar is formed in the copper bar, and the output wire penetrates through the first through hole and extends into the wire outlet structure; the copper bar is fixed on the bearing part; the orthographic projection length of the copper bar on the surface of the bearing part is greater than the orthographic projection length of the abutting part on the surface of the bearing part. And heat dissipation of the inductor in the energy storage converter can be facilitated.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is a divisional application of the Chinese invention patent application with application date of June 25, 2024, application number 202410823976.2, and invention name “Energy Storage Inverter”. Technical Field

[0003] The embodiments of the present disclosure relate to the field of energy storage, and in particular to an energy storage converter. Background Art

[0004] With the continuous development of the power industry, the working power of the power conversion device is getting larger and larger. In order to ensure the normal operation of the power conversion device, it is necessary to ensure that the inductor connected to the power conversion device is kept working in a low temperature environment, which places higher and higher requirements on the heat dissipation of the inductor in the power conversion device.

[0005] In the prior art, the inductor in the energy storage converter is a commonly used electronic component, and the heat dissipation of the inductor is usually air-cooled. In this air-cooled heat dissipation method of the inductor, since the cold air also cools other components in the container, the heat dissipation effect of the inductor is poor, and the inductor works in a high temperature environment for a long time, which affects the service life of the inductor.

[0006] Therefore, it is necessary to improve the heat dissipation effect of the inductor in the energy storage converter. Summary of the invention

[0007] The embodiments of the present disclosure provide an energy storage converter, which can at least accelerate the heat dissipation of the inductor in the energy storage converter.

[0008] According to some embodiments of the present disclosure, on one hand, an energy storage converter is provided according to an embodiment of the present disclosure, comprising: a shell, a housing space being provided therein; a liquid cooling plate being located within the housing space; an inductor, the inductor comprising: an outer shell, the outer shell comprising a first side plate and a second side plate arranged along a first direction, a third side plate and a fourth side plate arranged along a second direction, a fifth side plate and a sixth side plate arranged along a third direction, an opening being provided on the fifth side plate, and a portion of the fifth side plate other than the opening being provided with an outlet structure, the outlet structure extending from the opening toward the sixth side plate, the fifth side plate being fixed on a surface of the liquid cooling plate; an inner core, the inner core being fixed within the outer shell, and an output line of the inner core extending from the outlet structure to the outside of the outer shell; the outer shell further comprising: a limiting structure, the limiting structure being located at a position where the inner core is away from the sixth side plate. The inner core comprises: a magnetic core and a coil surrounding a part of the magnetic core; the limiting structure comprises: a fixing portion, the fixing portion abuts against the inner core on a surface facing the sixth side plate; a plurality of copper bars, each of which is fixed on the fixing portion, and a first through hole penetrating the copper bar is provided on the copper bar, the first through hole is directly opposite to the outlet structure, the output line of the inner core is electrically connected to the copper bar, and the output line extends into the outlet structure through the first through hole; the fixing portion comprises: a bearing portion, the copper bar is fixed on the bearing portion; an abutting portion, the abutting portion is located on a surface of the bearing portion close to the sixth side plate, and in the second direction, the length of the positive projection of the copper bar on the surface of the bearing portion is greater than the length of the positive projection of the abutting portion on the surface of the bearing portion.

[0009] In some embodiments, the limiting structure also includes: a clamping portion, which is fixed to the surface of the fixing portion away from the sixth side plate, and a second through hole is provided between the clamping portion and the fixing portion, and the copper busbar is fixed to the fixing portion through the second through hole; and / or a limiting portion, which is located on opposite sides of the fixing portion along the first direction, and the limiting portion abuts against the fixing portion and the magnetic core.

[0010] In some embodiments, the clamping portion includes: a plurality of first extension portions, the first extension portions extending along the first direction, and each of the first extension portions at least covers the surface of the copper busbar away from the sixth side plate; a plurality of first bending portions, the first bending portions being connected to one end of the first extension portion, and extending along the second direction and toward the direction close to the coil; at least one second extension portion, the second extension portion extending along the first direction, the second extension portion being located between two adjacent first extension portions, and being connected to adjacent first bending portions, and the second extension portion being located on the side of the first extension portion close to the coil.

[0011] In some embodiments, one of the inner cores includes two of the coils, the two coils are arranged along the second direction, and the second extension portion is located between the two coils.

[0012] In some embodiments, the limiting portion includes: a first contact portion, which extends along the first direction and abuts against the fixed portion; and a second contact portion, which extends along the third direction and abuts against a portion of the magnetic core that is not surrounded by the coil.

[0013] In some embodiments, the first contact portion includes: a plurality of sub-contact portions arranged along the third direction, the sub-contact portions abutting against the fixed portion; and a connecting portion extending along the third direction, the connecting portion connected to the plurality of sub-contact portions arranged along the third direction.

[0014] In some embodiments, the inductor further includes: a filling layer, wherein the filling layer completely fills the outer shell, and the inner core is located between the filling layer and the outer shell.

[0015] In some embodiments, it also includes: a heat-conducting layer, wherein the heat-conducting layer is located between the filling layer and the liquid cooling plate.

[0016] In some embodiments, the inductor further includes: a heat sink, and the heat sink is fixed on the surface of the shell.

[0017] In some embodiments, the area of ​​the space enclosed by the third side panel, the fourth side panel, the fifth side panel, and the sixth side panel is larger than the area of ​​the first side panel.

[0018] The technical solution provided by the embodiment of the present disclosure has at least the following advantages: the components in the energy storage inverter are protected by the shell, the electronic components in the energy storage inverter are cooled by the liquid cooling plate, the shell of the inductor is provided with multiple side panels, and the multiple side panels form a shell, and the inductor is provided with a shell surrounded by multiple side panels, so as to protect the battery core inside the inductor, and the position of the fifth side plate is provided with an opening, and the position of the opening is contacted with the liquid cooling plate, so that the distance between the internal battery core and the liquid cooling plate can be reduced, so that the cooling rate of the internal battery core can be accelerated, and then the heat dissipation effect of the inductor in the energy storage inverter is improved, and the outlet structure is provided at the non-opening position of the fifth side plate, and the outlet structure extends from the opening toward the direction of the sixth side plate, so that when the opening is in contact with the liquid cooling plate, the output line of the battery core can be easily electrically connected to other structures, and the position of the output line of the battery core is fixed, and the installation position of the inductor can also be conveniently designed.

[0019] Moreover, by providing an abutment between the fixed part and the inner core, the inner core can be limited in the outer shell. In addition, by providing a copper busbar, the stability of the inner core output can be improved, and the electrical connection between the inner core and other structures can be facilitated. As for the bearing part and the abutment part, the bearing part can be used to provide an installation platform for the copper busbar, and the abutment part can reduce the material consumption of the fixed part, thereby reducing the cost of the inductor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings, and these exemplified descriptions do not constitute a limitation on the embodiments. Unless otherwise specified, the pictures in the drawings do not constitute a scale limitation. In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the traditional technology, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A perspective view of an energy storage converter provided by an embodiment of the present disclosure;

[0022] Figure 2 A schematic diagram of a three-dimensional structure of an inductor provided in an embodiment of the present disclosure;

[0023] Figure 3 Another schematic diagram of a three-dimensional structure of an inductor provided in an embodiment of the present disclosure;

[0024] Figure 4 A schematic diagram of a three-dimensional structure of an inner core provided in an embodiment of the present disclosure;

[0025] Figure 5 A schematic diagram of another three-dimensional structure of an inductor provided in an embodiment of the present disclosure;

[0026] Figure 6 A schematic diagram of the structure of the limit structure and the inner core clamping connection provided by an embodiment of the present disclosure;

[0027] Figure 7 Another structural schematic diagram of the clamping connection between the limiting structure and the inner core provided in one embodiment of the present disclosure;

[0028] Figure 8 A schematic diagram of another structure of an inductor provided in an embodiment of the present disclosure;

[0029] Fig. 9 A schematic diagram of an exploded structure of an inductor and a heat-conducting layer provided in one embodiment of the present disclosure. DETAILED DESCRIPTION

[0030] As can be seen from the background technology, currently, the heat dissipation of an inductor is usually air cooling, and the opening of the corresponding inductor needs to face the air source so as to cooperate with the air cooling to dissipate heat.

[0031] The disclosed embodiment provides an energy storage inverter, which protects components in the energy storage inverter by a shell, cools electronic components in the energy storage inverter by a liquid cooling plate, and arranges an inductor in a shell having multiple side panels, which form a shell. The inductor includes a shell surrounded by multiple side panels, thereby protecting the battery core inside the inductor. The fifth side panel is provided with an opening, and the opening is contacted with the liquid cooling plate, thereby reducing the distance between the internal battery core and the liquid cooling plate, thereby accelerating the cooling rate of the internal battery core, and further improving the heat dissipation effect of the inductor in the energy storage inverter. An outlet structure is provided at a non-opening position of the fifth side panel, and the outlet structure extends from the opening toward the sixth side panel. When the opening contacts the liquid cooling plate, the output line of the battery core can be easily electrically connected to other structures, and the position of the output line of the battery core is fixed, and the installation position of the inductor can be easily designed.

[0032] Moreover, by providing an abutment between the fixed part and the inner core, the inner core can be limited in the outer shell. In addition, by providing a copper busbar, the stability of the inner core output can be improved, and the electrical connection between the inner core and other structures can be facilitated. As for the bearing part and the abutment part, the bearing part can be used to provide an installation platform for the copper busbar, and the abutment part can reduce the material consumption of the fixed part, thereby reducing the cost of the inductor.

[0033] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0034] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0036] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0037] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0038] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0039] In the accompanying drawings corresponding to the embodiments of the present application, the thickness and area of ​​the layer are magnified for better understanding and ease of description. When describing a component (such as a layer, film, region or substrate) on another component or on the surface of another component, the component can be "directly" located on the surface of the other component, or a third component can be present between the two components. On the contrary, when describing a component on the surface of another component or when another component is formed or provided on the surface of a component, it means that there is no third component between the two components. In addition, when describing a component as "substantially" formed on another component, it means that the component is not formed on the entire surface (or front surface) of the other component, nor is it formed on a partial edge of the entire surface.

[0040] In the description of the embodiments of the present application, when a component "includes" another component, unless otherwise specified, other components are not excluded, and other components may be further included. In addition, when a component such as a layer, a film, a region, or a plate is referred to as being "on / located on" another component, it may be "directly on" the other component (i.e., located on the surface of the other component with no other components between them), or another component may exist in between. In addition, when a component such as a layer, a film, a region, a plate, etc. is "directly located on" another component, or when a component such as a layer, a film, a region, a plate, etc. is located on the surface of another component, it means that no other components are located in between.

[0041] The terms used in the description of the various embodiments described herein are only used to describe specific embodiments and are not intended to be limiting. As used in the description of the various embodiments described and in the appended claims, "the components" are also intended to include plural forms unless the context clearly indicates otherwise. Among them, components include components such as layers, films, regions, or plates.

[0042] The following will describe the various embodiments of the present disclosure in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present disclosure, many technical details are provided in order to enable the reader to better understand the present disclosure. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present disclosure can be implemented.

[0043] Combined with reference Figure 1 , Figure 2 , Figure 3 and Fig. 9 , Figure 1 A perspective view of an energy storage converter provided by an embodiment of the present disclosure, Figure 2 A schematic diagram of a three-dimensional structure of an inductor provided in an embodiment of the present disclosure, Figure 3 Another schematic diagram of a three-dimensional structure of an inductor provided in an embodiment of the present disclosure is shown in FIG. Fig. 9 A schematic diagram of the combined structure of an inductor and a liquid cooling plate provided in one embodiment of the present disclosure.

[0044] In some embodiments, the energy storage converter may include: a housing 10 , in which a receiving space is provided.

[0045] The energy storage converter may further include: a liquid cooling plate 11, located in the accommodating space.

[0046] The energy storage converter may also include: an inductor 12, which may include: a shell 100, the shell 100 includes a first side plate 110 and a second side plate 120 arranged along a first direction X, a third side plate 130 and a fourth side plate 140 arranged along a second direction Y, and a fifth side plate 150 and a sixth side plate 160 arranged along a third direction Z, the fifth side plate 150 is provided with an opening 170, and a non-opening portion of the fifth side plate 150 is provided with an outlet structure 180, the outlet structure 180 extends from the opening 170 toward the sixth side plate 160, and the fifth side plate 150 is fixed on the surface of the liquid cooling plate 11; an inner core 101, the inner core 101 is fixed in the shell 100, and the output line of the inner core 101 extends from the outlet structure 180 to the outside of the shell 100.

[0047] In the embodiment of the present disclosure, the housing 10 is used to protect the components in the energy storage converter, and the liquid cooling plate 11 is used to cool the electronic components in the energy storage converter. The housing 100 of the inductor 12 is provided with a plurality of side panels, and the plurality of side panels surround the housing 100. The inductor 12 is provided with a housing 100 surrounded by a plurality of side panels, so as to protect the inner core 101 inside the inductor 12. The position of the fifth side panel 150 is provided with an opening 170, and the position of the opening 170 is contacted with the liquid cooling plate 11, so as to reduce the inner core 101 inside. The distance between the inner core 101 and the liquid cooling plate 11 can speed up the cooling rate of the inner core 101, thereby improving the heat dissipation effect of the inductor in the energy storage converter. By providing an outlet structure 180 at a non-opening position of the fifth side plate 150, and the outlet structure 180 extends from the opening 170 toward the sixth side plate 160, when the opening 170 contacts the liquid cooling plate 11, the output line of the inner core 101 is convenient for electrical connection with other structures, and the position of the output line of the inner core 101 is fixed, and it is also convenient to design the installation position of the inductor 12.

[0048] In some embodiments, the inductor 12 is mounted on the liquid cooling plate 11, and the fifth side plate 150 is in contact with the surface of the liquid cooling plate 11. In this way, the heat exchange between the inner core 101 of the inductor 12 and the liquid cooling plate 11 can be carried out through the opening 170, thereby avoiding the need for the outer shell 100 to be spaced between the inductor 12 and the cold source, thereby reducing the distance between the inductor 12 and the cold source, and improving the heat dissipation effect of the inductor 12.

[0049] In some embodiments, for the first side panel 110, the first side panel 110 is connected to the third side panel 130, the fourth side panel 140, the fifth side panel 150 and the sixth side panel 160, and the connecting surface between the first side panel 110 and the third side panel 130 can be chamfered. Similarly, the connecting surface between the first side panel 110 and the fourth side panel 140 can be chamfered, and the connecting surface between the first side panel 110 and the sixth side panel 160 can be chamfered.

[0050] In some embodiments, for the second side panel 120, the second side panel 120 is connected to the third side panel 130, the fourth side panel 140, the fifth side panel 150 and the sixth side panel 160, and the connecting surface between the second side panel 120 and the third side panel 130 can be chamfered. Similarly, the connecting surface between the second side panel 120 and the fourth side panel 140 can be chamfered, and the connecting surface between the second side panel 120 and the sixth side panel 160 can be chamfered.

[0051] In some embodiments, for the third side plate 130 , the third side plate 130 is connected to the first side plate 110 , the second side plate 120 , the fifth side plate 150 and the sixth side plate 160 , and the connection surface between the third side plate 130 and the sixth side plate 160 may be chamfered.

[0052] In some embodiments, the fourth side plate 140 is connected to the first side plate 110 , the second side plate 120 , the fifth side plate 150 and the sixth side plate 160 , and the connection surface between the fourth side plate 140 and the sixth side plate 160 may be chamfered.

[0053] As described above, the first side plate 110 , the second side plate 120 , the third side plate 130 , the fourth side plate 140 , the fifth side plate 150 and the sixth side plate 160 are connected to form the housing 100 .

[0054] Moreover, for the opening 170, the size of the opening 170 can be the same as the size of the space enclosed by the first side panel 110, the second side panel 120, the third side panel 130 and the fourth side panel 140. In other words, the fifth side panel 150 can be in contact with the outer panels of the first side panel 110, the second side panel 120, the third side panel 130 and the fourth side panel 140, so that the inner core 101 can be completely exposed through the opening 170, thereby further improving the heat dissipation effect of the inner core 101.

[0055] Combined with reference Figure 2 and Figure 3 In some embodiments, the first side panel 110 and the sixth side panel 160 may be connected via a connecting step 190 . Similarly, the first side panel 110 and the third side panel 130 and the fourth side panel 140 may also be connected via a connecting step 190 .

[0056] The second side plate 120 and the sixth side plate 160 may be connected via a connecting step 190 . Similarly, the second side plate 120 and the third side plate 130 and the fourth side plate 140 may also be connected via a connecting step 190 .

[0057] In some embodiments, the connecting step 190 may include: a first connecting side wall 191, the first connecting side wall 191 is connected to the first side panel 110; a second connecting side wall 192, the second connecting side wall 192 is connected to the third side panel 130, the fourth side panel 140 and the sixth side panel 160, and there is an angle between the first connecting side wall 191 and the second connecting side wall 192.

[0058] In some embodiments, the first connecting side wall 191 may include: a first connecting area 193, the first connecting area 193 contacts the side of the first side plate 110 away from the fifth side plate 150; a second connecting area 194, the second connecting area 194 is connected to the first connecting area 193, and the second connecting area 194 contacts one side of the first side plate 110 arranged along the second direction Y; a third connecting area 195, the third connecting area 195 is connected to the first connecting area 193, and the third connecting area 195 contacts another side of the first side plate 110 arranged along the second direction Y.

[0059] In some embodiments, the first connection area 193, the second connection area 194 and the third connection area 195 can be an integrated structure, the connection surface between the first connection area 193 and the second connection area 194 can be rounded, and the connection surface between the first connection area 193 and the third connection area 195 can be rounded, which can improve the reliability of the first connection side wall 191, avoid excessive sharpness between the first connection area 193 and the second connection area 194 and between the first connection area 193 and the third connection area 195, reduce the possibility of wear on the outer shell 100, and the first connection side wall 191 with an integrated structure can increase the strength of the first connection side wall 191 and increase the connection reliability.

[0060] In some embodiments, the first connection area 193 , the second connection area 194 , and the third connection area 195 may also be a split structure, that is, the first connection area 193 , the second connection area 194 , and the third connection area 195 are connected by welding or other methods.

[0061] In some embodiments, the second connecting side wall 192 may include: a fourth connecting area 196, the fourth connecting area 196 is connected to the sixth side panel 160, and the fourth connecting area 196 is connected to the first connecting area 193; a fifth connecting area 197, the fifth connecting area 197 is connected to the fourth connecting area 196, and the fifth connecting area 197 is connected to the third side panel 130 and the second connecting area 194; a sixth connecting area 198, the sixth connecting area 198 is connected to the fourth connecting area 196, and the sixth connecting area 198 is connected to the fourth side panel 140 and the third connecting area 195.

[0062] In some embodiments, the fourth connection area 196, the fifth connection area 197 and the sixth connection area 198 can be an integrated structure, and the connection surface between the fifth connection area 197 and the fourth connection area 196 can be rounded, and the connection surface between the sixth connection area 198 and the fourth connection area 196 can be rounded, so as to improve the reliability of the second connection side wall 192, avoid excessive sharpness between the fifth connection area 197 and the fourth connection area 196 and between the sixth connection area 198 and the fourth connection area 196, reduce the possibility of wear of the outer shell 100, and the second connection side wall 192 with an integrated structure can increase the strength of the second connection side wall 192 and increase the connection reliability.

[0063] In some embodiments, the fourth connection area 196, the fifth connection area 197 and the sixth connection area 198 may also be a split structure, that is, the fourth connection area 196, the fifth connection area 197 and the sixth connection area 198 are connected by welding or other methods.

[0064] By setting the connection step 190 including: a first connection side wall 191 and a second connection side wall 192, the first side plate 110 can be connected to the third side plate 130, the fourth side plate 140 and the sixth side plate 160. By setting the connection step 190, the area of ​​the first side plate 110 can be reduced accordingly, thereby reducing the occupied space of the housing 100, thereby reducing the installation space required for the inductor 12.

[0065] By setting the first connecting side wall 191 to include the first connecting area 193, the second connecting area 194 and the third connecting area 195, and the second connecting side wall 192 to include the fourth connecting area 196, the fifth connecting area 197 and the sixth connecting area 198, on the one hand, different side panels can be connected through the connecting step 190, and on the other hand, the sealing degree of the outer shell can be improved, thereby preventing foreign matter from entering the interior of the outer shell 100 and avoiding contamination of the inner core 101.

[0066] Continue to refer Figure 3 In some embodiments, along a cross section perpendicular to the first direction X, a cross-sectional area of ​​a space enclosed by the third side panel 130, the fourth side panel 140, the fifth side panel 150, and the sixth side panel 160 is greater than an area of ​​the first side panel 110. In other words, along the third direction Z, a top surface of the sixth side panel 160 is higher than a top surface of the first side panel 110, and in the second direction Y, a side surface of the third side panel 130 protrudes from a side surface of the first side panel 110, and a side surface of the fourth side panel 140 protrudes from a side surface of the first side panel 110.

[0067] refer to Figure 4 , Figure 4 A schematic diagram of a three-dimensional structure of an inner core provided in an embodiment of the present disclosure, wherein: Figure 4FIG. 1 is a schematic diagram showing a structure in which the inner core is installed in the outer shell.

[0068] In some embodiments, the inner core 101 may include: a magnetic core 111 and a coil 121 surrounding part of the magnetic core 111. For the inner core 101, the inner diameter of the inner core 101 part with the coil 121 is increased, and the morphology of the outer shell 100 is similar to that of the inner core 101. Correspondingly, there are steps between the first side plate 110, the second side plate 120 and the third side plate 130, there are steps between the first side plate 110, the second side plate 120 and the fourth side plate 140, and there are steps between the first side plate 110, the second side plate 120 and the sixth side plate 160. In this way, the space enclosed by the third side plate 130, the fourth side plate 140 and the sixth side plate 160 is larger, corresponding to the part of the magnetic core 111 surrounding the coil 121, thereby facilitating the installation of the inner core 101.

[0069] Corresponding to the inner core 101, the space area enclosed by the third side panel 130, the fourth side panel 140, the fifth side panel 150 and the sixth side panel 160 is larger than the area of ​​the first side panel 110. The shape of the outer shell 100 can also be made similar to that of the inner core 101 for adaptation, thereby reducing the installation space required for the inductor 12 and facilitating the positioning of the inner core 101.

[0070] Combined with reference Figures 3 to 5 ,in, Figure 5 A schematic diagram of another three-dimensional structure of an inductor provided in an embodiment of the present disclosure.

[0071] In some embodiments, the housing 100 further includes: a limiting structure 102, which is located on a side of the inner core 101 away from the sixth side plate 160, and surrounds the outlet structure 180. The inner core 101 can be fixed by providing the limiting structure 102, so that the inner core 101 can be fixed in the housing 100 to prevent the inner core 101 from shaking in the housing 100.

[0072] In some embodiments, the inner core 101 includes: a magnetic core 111 and a coil 121 surrounding a portion of the magnetic core 111; the limiting structure 102 includes: a fixing portion 112, the surface of the fixing portion 112 facing the sixth side plate 160 abuts against the inner core 101; a plurality of copper bars 122, each copper bar 122 is fixed on the fixing portion 112, and the copper bar 122 is provided with a first through hole 133 penetrating the copper bar 122, the first through hole 133 is directly opposite to the output structure 180, the output line of the inner core 101 is electrically connected to the copper bar 122, and the output line passes through the first through hole 133 and extends into the output structure 180. By setting the fixing portion 112 and the inner core 101 abutting against each other, the inner core 101 can be limited in the outer shell 100, and by setting the copper bar 122, the stability of the output of the inner core 101 can be improved, thereby facilitating the electrical connection of the inner core 101 with other structures.

[0073] Combined with reference Figure 5 and Figure 6 , Figure 6 A schematic diagram of the structure of the limiting structure and the inner core clamping provided in one embodiment of the present disclosure.

[0074] In some embodiments, the limiting structure 102 further includes: a clamping portion 132, the clamping portion 132 is fixed to the surface of the fixing portion 112 away from the sixth side plate 160, and a second through hole 142 is provided between the clamping portion 132 and the fixing portion 112, and the copper bar 122 passes through the second through hole 142 and is fixed to the fixing portion 112. The clamping portion 132 is used to fix the copper bar 122, thereby preventing the copper bar 122 from shaking, thereby improving the connection reliability between the copper bar 122 and the inner core 101.

[0075] In some embodiments, the clamping portion 132 may include: a plurality of first extension portions 152, the first extension portions 152 extending along the first direction X, and each first extension portion 152 at least covers the surface of the copper bus 122 away from the sixth side plate 160; a plurality of first bending portions 162, the first bending portion 162 being connected to one end of the first extension portion 152, and extending in the second direction Y toward the direction close to the coil 121; at least one second extension portion 172, the second extension portion 172 extending along the first direction X, the second extension portion 172 being located between two adjacent first extension portions 152, and being connected to the adjacent first bending portions 162, and the second extension portion 172 being located on the side of the first extension portion 152 close to the coil 121. The first extension portion 152 is provided to facilitate fixing of the copper busbar 122 , and the second extension portion 172 is provided to separate different magnetic cores 111 and coils, thereby improving the reliability of the inductor 12 , and the first bending portion 162 is provided to connect the first extension portion 152 and the second extension portion 172 , thereby improving the reliability of the clamping portion 132 .

[0076] In some embodiments, an inner core 101 includes two coils 121 arranged along the second direction. The second extension portion 172 is disposed between the two coils 121 to avoid direct overlap between the two coils 121, thereby improving the reliability of the inductor 12.

[0077] Combined with reference Figure 6 and Figure 7 , Figure 7 A schematic structural diagram of another perspective of the limit structure and inner core clamping provided in one embodiment of the present disclosure.

[0078] In some embodiments, the fixing portion 112 may include: a bearing portion 182, on which the copper busbar 122 is fixed; and a contact portion 202, which is located on the surface of the bearing portion 182 close to the sixth side plate 160, and in the second direction Y, the length of the positive projection of the copper busbar 122 on the surface of the bearing portion 182 is greater than the length of the positive projection of the contact portion 202 on the surface of the bearing portion 182. The bearing portion 182 can be used to provide a mounting platform for the copper busbar 122, so that the copper busbar 122 can be easily carried. By setting the length of the contact portion 202 in the second direction Y to be less than the length of the bearing portion 182 in the second direction Y, the material consumption of the fixing portion 112 can be reduced, thereby reducing the cost of the inductor 12.

[0079] In some embodiments, the limiting structure 102 further includes: limiting portions 212, the limiting portions 212 are located at opposite sides of the fixing portion 112 along the first direction X, and the limiting portions 212 abut against the fixing portion 112 and the magnetic core 111. The fixing portion 112 and the magnetic core 111 are fixed along the first direction X by the limiting portions 212, so that the fixing portion 112 and the magnetic core 111 can be prevented from shaking in the first direction X, thereby improving the reliability of the limiting structure 102.

[0080] In some embodiments, the limiting portion 212 includes: a first contact portion 222, the first contact portion 222 extends along the first direction X, and the first contact portion 222 abuts against the fixed portion 112; and a second contact portion 232, the second contact portion 232 extends along the third direction Y, and the second contact portion 232 abuts against the portion of the magnetic core 111 that is not surrounded by the coil 121. The first contact portion 222 abuts against the fixed portion 112, thereby limiting the fixed portion 112 in the first direction X, and the second contact portion 232 abuts against the magnetic core 111, thereby limiting the magnetic core 111 in the first direction X, thereby achieving the limiting of the inner core 101 by the limiting portion 212, and improving the reliability of the inductor 12.

[0081] In some embodiments, the first contact portion 222 may include: a plurality of sub-contact portions 242 arranged along the third direction Z, and a connecting portion 252 extending along the third direction Z, wherein the connecting portion 252 connects the plurality of sub-contact portions 242 arranged along the third direction Z. It is understandable that the more the number of sub-contact portions 242, the larger the contact area between the first contact portion 222 and the fixing portion 112, the stronger the limiting ability, and some of the sub-contact portions 242 may also serve as reinforcing ribs of the first contact portion 222, thereby improving the strength of the first contact portion 222.

[0082] Correspondingly, the greater the number of sub-contact portions 242, the more materials are required for the sub-contact portions 242, and the higher the cost. Moreover, under the premise that the surface area of ​​the contact between the fixed portion 112 and the first contact portion 222 is constant, there is a maximum number for the sub-contact portions 242. Therefore, the number of sub-contact portions 242 can be selected according to actual conditions, for example, 2 to 5.

[0083] In some embodiments, the sub-contact portion 242 and the connecting portion 252 may be an integrated structure, thereby improving the connection strength between the sub-contact portion 242 and the connecting portion 252. The sub-contact portion 242 and the connecting portion 252 may also be a separate structure.

[0084] In some embodiments, the entire side wall of the second contact portion 232 abuts against the inner core 101 , thereby increasing the limiting capability of the second contact portion 232 and further limiting the movement of the inner core 101 , thereby further improving the reliability of the inductor 12 .

[0085] In some embodiments, the second contact portion 232 and the first contact portion 222 may be an integral structure, thereby improving the connection strength between the second contact portion 232 and the first contact portion 222. Further, the second contact portion 232 and the sub-contact portion 242 and the connecting portion 252 may be an integral structure, thereby increasing the strength of the limiting portion 212. The second contact portion 232 and the first contact portion 222 may also be a split structure, which may be selected according to actual conditions.

[0086] Combined with reference Figure 4 and Figure 8 , Figure 8 A schematic diagram of another structure of an inductor provided in an embodiment of the present disclosure.

[0087] In some embodiments, the inductor 12 may further include: a filling layer 104, the filling layer 104 fills the outer shell 100, and the inner core 101 is located between the filling layer 104 and the outer shell 100. On the one hand, the filling layer 104 can discharge the air in the outer shell 100. For the inner core 101, the thermal conductivity of air is low, which is not conducive to the heat dissipation of the inner core 101. Therefore, by providing the filling layer 104 to discharge the air in the outer shell 100, it is convenient to export the heat of the inner core 101, so as to facilitate the heat dissipation of the inner core 101. On the other hand, the filling layer 104 can also facilitate the fixing of the inner core 101 in the outer shell 100, thereby improving the reliability of the fixing of the inner core 101.

[0088] refer to Fig. 9 , Fig. 9 A schematic diagram of an exploded structure of an inductor and a heat-conducting layer provided in one embodiment of the present disclosure.

[0089] In some embodiments, the inductor 12 may further include a heat conducting layer 105, which is located on the surface of the filling layer 104. The heat conducting layer 105 has a high thermal conductivity and a strong thermal conductivity, so that the heat of the inner core 101 can be further removed, thereby facilitating the heat dissipation of the inner core 101.

[0090] In some embodiments, the inductor 12 is fixed on the surface of the liquid cooling plate 11, and the thermal conductive layer 105 is disposed on the surface of the liquid cooling plate 11, thereby conducting the heat in the inner core 101 to the liquid cooling plate 11, facilitating heat exchange between the inner core 101 and the liquid cooling plate 11. Moreover, for the embodiments of the present disclosure, there is no side wall spacing of the outer shell between the inner core 101 and the liquid cooling plate 11, thereby further improving the heat dissipation capacity of the inner core 101.

[0091] Continue to refer Figure 2 and Figure 3 In some embodiments, the inductor 12 may further include a heat sink 106, which is fixed to the surface of the housing 100. The heat sink 106 may increase air turbulence, thereby further increasing heat exchange between the inductor 12 and the air, and increasing the heat dissipation effect of the inductor 12.

[0092] In some embodiments, the heat sink 106 covers the surfaces of the third side plate 130, the fourth side plate 140 and the sixth side plate 160. By arranging the heat sink 106 to cover the surfaces of the third side plate 130, the fourth side plate 140 and the sixth side plate 160, the contact area between the inductor 12 and the air can be further increased, thereby increasing the heat dissipation capacity of the inductor 12. In some embodiments, the heat sink 106 can also only cover the surface of the sixth side plate 160, or only cover the surfaces of the sixth side plate 160 and the third side plate 130, or only cover the surfaces of the sixth side plate 160 and the fourth side plate 140.

[0093] In some embodiments, the heat sink 106 covers surfaces of any number of side plates including the first side plate 110 , the second side plate 120 , the third side plate 130 , the fourth side plate 140 , and the sixth side plate 160 .

[0094] In some embodiments, there are multiple heat sinks 106, and the multiple heat sinks 106 are arranged along the first direction X. The more the heat sinks 106 are, the stronger the heat dissipation capacity of the corresponding increased inductor is. Arranging multiple heat sinks 106 along the first direction X can further improve the heat dissipation capacity of the inductor 12.

[0095] In some embodiments, a surface of the sixth side plate 160 away from the opening 170 is provided with a groove 107, and part of the heat sink 106 is also covered on the surface of the groove 107. On the one hand, the groove 107 can increase the strength of the housing 100, and on the other hand, the groove 107 is provided, and the heat sink 106 is provided to cover the surface of the groove 107, thereby further increasing the contact area between the heat sink 106 and the housing 100, thereby further increasing the heat dissipation capacity of the inductor 12.

[0096] In the embodiment of the present disclosure, the housing 10 is used to protect the components in the energy storage converter, and the liquid cooling plate 11 is used to cool the electronic components in the energy storage converter. The housing 100 of the inductor 12 is provided with a plurality of side panels, and the plurality of side panels surround the housing 100. The inductor 12 is provided with a housing 100 surrounded by a plurality of side panels, so as to protect the inner core 101 inside the inductor 12. The position of the fifth side panel 150 is provided with an opening 170, and the position of the opening 170 is contacted with the liquid cooling plate 11, so as to reduce the inner core 101 inside. The distance between the inner core 101 and the liquid cooling plate 11 can speed up the cooling rate of the inner core 101, thereby improving the heat dissipation effect of the inductor in the energy storage converter. By providing an outlet structure 180 at a non-opening position of the fifth side plate 150, and the outlet structure 180 extends from the opening 170 toward the sixth side plate 160, when the opening 170 contacts the liquid cooling plate 11, the output line of the inner core 101 is convenient for electrical connection with other structures, and the position of the output line of the inner core 101 is fixed, and it is also convenient to design the installation position of the inductor 12.

[0097] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in practical applications, various changes can be made to them in form and detail without departing from the spirit and scope of the embodiments of the present disclosure. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the embodiments of the present disclosure, so the protection scope of the embodiments of the present disclosure shall be based on the scope defined in the claims.

Claims

1. An energy storage converter, characterized in that: include: A housing, wherein a receiving space is provided in the housing; A liquid cooling plate, located in the accommodation space; An inductor, the inductor comprising: an outer shell, the outer shell comprising a first side plate and a second side plate arranged along a first direction, a third side plate and a fourth side plate arranged along a second direction, a fifth side plate and a sixth side plate arranged along a third direction, the fifth side plate being provided with an opening, and a portion of the fifth side plate other than the opening being provided with an outlet structure, the outlet structure extending from the opening toward the sixth side plate, the fifth side plate being fixed to the surface of the liquid cooling plate; an inner core, the inner core being fixed in the outer shell, and an output line of the inner core extending from the outlet structure to the outside of the outer shell; The housing further comprises: a limiting structure, the limiting structure is located at a side of the inner core away from the sixth side plate, and the limiting structure surrounds the outlet structure; The inner core comprises: a magnetic core and a coil surrounding a portion of the magnetic core; the limiting structure comprises: a fixing portion, the fixing portion abutting against the inner core on a surface facing the sixth side plate; a plurality of copper bars, each of which is fixed on the fixing portion, and the copper bars are provided with a first through hole penetrating the copper bars, the first through hole is directly opposite to the outlet structure, the output line of the inner core is electrically connected to the copper bar, and the output line passes through the first through hole and extends into the outlet structure; The fixing portion includes: a bearing portion, on which the copper busbar is fixed; and an abutting portion, which is located on a surface of the bearing portion close to the sixth side plate, and in the second direction, a length of an orthographic projection of the copper busbar on the surface of the bearing portion is greater than a length of an orthographic projection of the abutting portion on the surface of the bearing portion.

2. The energy storage converter according to claim 1, characterized in that: The limiting structure also includes: A clamping portion, wherein the clamping portion is fixed to a surface of the fixing portion away from the sixth side plate, and a second through hole is provided between the clamping portion and the fixing portion, and the copper busbar is fixed to the fixing portion through the second through hole; and / or a limiting portion, wherein the limiting portion is located on opposite sides of the fixing portion along the first direction, and the limiting portion abuts against the fixing portion and the magnetic core.

3. The energy storage converter according to claim 2, characterized in that: The clamping portion comprises: A plurality of first extension portions, wherein the first extension portions extend along the first direction, and each of the first extension portions at least covers a surface of the copper busbar away from the sixth side plate; a plurality of first bending portions, wherein the first bending portion is connected to one end of the first extending portion and extends along the second direction and toward a direction close to the coil; At least one second extension portion, the second extension portion extends along the first direction, the second extension portion is located between two adjacent first extension portions and connected to adjacent first bending portions, and the second extension portion is located on a side of the first extension portion close to the coil.

4. The energy storage converter according to claim 3, characterized in that: One of the inner cores includes two coils, the two coils are arranged along the second direction, and the second extension portion is located between the two coils.

5. The energy storage converter according to claim 2, characterized in that: The limiting part comprises: a first contact portion, the first contact portion extending along the first direction and abutting against the fixing portion; The second contact portion extends along the third direction and abuts against a portion of the magnetic core that is not surrounded by the coil.

6. The energy storage converter according to claim 5, characterized in that: The first contact portion comprises: a plurality of sub-contact portions arranged along the third direction, the sub-contact portions abutting against the fixing portion; A connecting portion extending along the third direction, wherein the connecting portion is connected to a plurality of the sub-contact portions arranged along the third direction.

7. The energy storage converter according to claim 1, characterized in that: The inductor also includes: A filling layer is provided, wherein the filling layer completely fills the outer shell, and the inner core is located between the filling layer and the outer shell.

8. The energy storage converter according to claim 7, characterized in that: Also includes: A heat-conducting layer is located between the filling layer and the liquid cooling plate.

9. The energy storage converter according to claim 1, characterized in that: The inductor further comprises: a heat sink, and the heat sink is fixed on the surface of the shell.

10. The energy storage converter according to claim 1, characterized in that: The area of ​​a space enclosed by the third side plate, the fourth side plate, the fifth side plate and the sixth side plate is larger than the area of ​​the first side plate.

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