Energy storage converter and energy storage device

Abstract

The invention relates to an energy storage converter and an energy storage device, the energy storage converter comprises a mounting box, an inductor and a cold plate, the mounting box is provided with a mounting cavity, the inductor is mounted in the mounting cavity, and the mounting box is mounted on the cold plate; the mounting box is provided with a bottom wall, one of the bottom wall and the cold plate is provided with a heat dissipation groove, the other one of the bottom wall and the cold plate is provided with a heat dissipation protrusion, and the heat dissipation groove is matched with the heat dissipation protrusion; the mounting box is provided with a first side wall and a second side wall which are opposite, the first side wall is provided with a first surface deviating from the second side wall, the second side wall is provided with a second surface deviating from the first side wall, and the distance between the first surface and the second surface is gradually increased in the direction close to the cold plate; the thickness of the first side wall and / or the thickness of the second side wall are / is increased in the direction close to the cold plate, a triangular-prism-shaped containing cavity is formed in the first side wall and / or the second side wall, a liquid cooling medium is contained in the containing cavity, and the cooling medium can be converted into a gas state when the temperature reaches the preset temperature.

Description

[0001] This application is a divisional application. The application number of the original application is 202411132003.0, and the application date of the original application is August 19, 2024. The entire contents of the original application are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of energy storage technology, and in particular to an energy storage converter and an energy storage device. Background Art

[0003] The energy storage converter can control the charging and discharging process of the battery, perform AC / DC conversion, and directly supply power to the AC load in the absence of a power grid. The energy storage converter is provided with an inductor and a cold plate for cooling. In the prior art, the inductor is placed in a roughly rectangular inductor box, and the inductor box is placed on the cold plate. However, due to the limited contact area between the inductor box and the cold plate, the heat dissipation effect of the inductor is poor. Summary of the invention

[0004] The present application provides an energy storage converter and an energy storage device, wherein the energy storage converter is used to solve the technical problem of poor heat dissipation effect of inductance.

[0005] An energy storage converter provided by an embodiment of the present application includes: a mounting box, an inductor and a cold plate, wherein the mounting box has a mounting cavity, the inductor is mounted in the mounting cavity, and the mounting box is mounted on the cold plate; the mounting box has a bottom wall, one of the bottom wall and the cold plate is provided with a heat dissipation groove, and the other is provided with a heat dissipation protrusion, and the heat dissipation groove cooperates with the heat dissipation protrusion; the mounting box has a first side wall and a second side wall opposite to each other, the first side wall has a first surface facing away from the second side wall, the second side wall has a second surface facing away from the first side wall, and the distance between the first surface and the second surface gradually increases in a direction approaching the cold plate; The thickness of the first side wall and / or the second side wall increases along the direction approaching the cold plate, and a triangular prism-shaped accommodating cavity is provided in the first side wall and / or the second side wall, and a liquid cooling medium is accommodated in the accommodating cavity, and the cooling medium can be converted into a gas when the temperature reaches a preset temperature; the preset temperature is the upper limit value of the suitable working temperature of the inductor.

[0006] In a possible design, a plurality of the heat dissipation grooves and / or the heat dissipation protrusions are arranged along the axial direction of the inductor.

[0007] In a possible design, heat dissipation ribs are provided on the first surface and / or the second surface, and the heat dissipation ribs extend from an end of the first surface or the second surface away from the cold plate to an end close to the cold plate.

[0008] In a possible design, the width of the heat dissipation rib increases along a direction approaching the cold plate; and / or the height of the heat dissipation rib protruding from the first side wall or the second side wall increases along a direction approaching the cold plate.

[0009] In a possible design, the shape of the flow channel on the cold plate is adapted to the shape of the heat dissipation protrusion or the heat dissipation groove; the cold plate has a plurality of the heat dissipation protrusions or the heat dissipation grooves, and the flow channel is correspondingly provided with a plurality of protrusions or grooves.

[0010] In a possible design, the inductor includes a main body and ends, and the ends are arranged on both sides of the main body; the installation box is provided with: A first supporting portion, wherein the first supporting portion has a curved surface capable of supporting the main body; The second support portion is arranged on both sides of the first support portion along the axial direction of the inductor, and the second support portion is a support rib, and the support rib can support the end portion.

[0011] In a possible design, an angle α is formed between the first surface and / or the second surface and the vertical direction, and the angle α satisfies: 5°≤α≤30°.

[0012] In one possible design, the mounting box has a third side wall and a fourth side wall relative to each other, the third side wall has a third surface facing away from the fourth side wall, the fourth side wall has a fourth surface facing away from the third side wall, and the distance between the third surface and the fourth surface increases in a direction approaching the cold plate.

[0013] In a possible design, the mounting box has an avoidance groove, which is arranged at the connection between the first side wall and the third side wall and the fourth side wall, and at the connection between the second side wall and the third side wall and the fourth side wall; the bottom wall has an installation surface on the side facing the avoidance groove, and a mounting hole is arranged on the installation surface, and the connecting part is connected to the cold plate through the mounting hole.

[0014] An energy storage device provided in an embodiment of the present application includes: a body and the energy storage converter described above.

[0015] In the present application, the inductor generates heat during operation, and the heat can be conducted to the cold plate through the mounting box, and the cold plate absorbs the heat to achieve cooling of the inductor, so that the inductor works at a suitable temperature. A flow channel is provided in the cold plate, and a coolant with a low temperature is passed into the flow channel. One or more inductors can be accommodated in the mounting cavity. The heat dissipation protrusion cooperates with the heat dissipation groove to increase the contact area between the bottom wall and the cold plate, thereby improving the heat dissipation effect of the cold plate on the inductor. At the same time, the cooperation of the heat dissipation protrusion and the heat dissipation groove can limit the movement of the mounting box relative to the cold plate, so that the position of the mounting box relative to the cold plate is determined, thereby playing a limiting role. The shape of the flow channel on the cold plate corresponding to the mounting box is adapted to the shape of the heat dissipation protrusion or the heat dissipation groove, so that the heat transfer effect between the cold plate and the mounting box is more balanced. Along the direction close to the cold plate, the distance between the first surface and the second surface gradually increases, so that the area of ​​the surface of the bottom wall facing the cold plate is larger, that is, the contact area between the bottom wall and the cold plate is larger, thereby making the heat exchange efficiency between the mounting box and the cold plate higher, and the heat dissipation effect of the cold plate on the inductor is better.

[0016] Furthermore, by setting a receiving cavity in the first side wall and / or the second side wall, a cooling medium that can undergo phase change is injected into the receiving cavity. When the inductor is working, the liquid cooling medium absorbs the heat generated by the inductor and then heats up. When the temperature rises to a preset temperature, the liquid cooling medium can continue to absorb heat and convert into a gaseous state, so that the cooling medium has a strong heat absorption capacity, thereby effectively preventing the inductor from overheating. The receiving cavity is in the shape of a triangular prism, so that the distance between the side wall of the receiving cavity and the first surface or the surface of the first side wall facing the second side wall is relatively consistent. At the same time, the side wall of the triangular prism-shaped receiving cavity facing the cold plate has a larger area, which is conducive to the transfer of heat to the cold plate, that is, the heat generated by the inductor can be transferred to the cooling medium in the receiving cavity, and then transferred to the cold plate, and finally carried away by the coolant in the cold plate.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the installation box, inductor and cold plate in the energy storage converter provided in this application; Figure 2 for Figure 1 A partial cross-sectional view of a mounting box, an inductor and a cold plate in a specific embodiment; Figure 3 for Figure 1 A partial cross-sectional view of a mounting box, an inductor and a cold plate in another specific embodiment; Figure 4 for Figure 1 Cross-sectional view of the intercooler plate; Figure 5 for Figure 1 Schematic diagram of the structure of the mounting box and inductor; Figure 6 for Figure 5 Schematic diagram of the structure of the inductor; Figure 7 for Figure 5 The structural diagram of the installation box; Figure 8 for Figure 5 Side view of.

[0019] Reference numerals: 1- Installation box; 1a-Mounting cavity; 1b-accommodation cavity; 11- a first side wall; 12- a second side wall; 13- third side wall; 14- fourth side wall; 15-bottom wall; 151-heat dissipation protrusion; 152-mounting surface; 153-Mounting hole; 16- first supporting portion; 17- second supporting portion; 18- heat dissipation ribs; 19-Avoidance slot; 2- Inductor; 21- Subject; 22-end; 3-Cold plate; 31- flow channel; 32-Heat dissipation grooves.

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0021] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0022] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0023] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

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

[0025] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0026] The embodiment of the present application provides an energy storage device, such as an energy storage container. The energy storage device has a body, which is generally provided with multiple independent battery compartments and equipment compartments. The battery compartment is provided with a battery rack, and multiple battery packs are placed on the battery rack. The equipment compartment is provided with an energy storage inverter, which can control the charging and discharging process, perform AC-DC conversion, and can directly supply power to AC loads in the absence of a power grid.

[0027] The present application embodiment provides an energy storage converter, such as Figure 1 and Figure 2 As shown, the energy storage converter includes: a mounting box 1, an inductor 2 and a cold plate 3. The mounting box 1 has a mounting cavity 1a, the inductor 2 is mounted in the mounting cavity 1a, and the mounting box 1 is mounted on the cold plate 3. The inductor 2 generates heat during operation, and the heat can be conducted to the cold plate 3 through the mounting box 1. The cold plate 3 absorbs the heat to cool the inductor 2, so that the inductor 2 works at a suitable temperature.

[0028] Among them, Figure 4 As shown, a flow channel 31 is provided in the cold plate 3, and a coolant with a relatively low temperature flows into the flow channel 31. Figure 6As shown, the installation cavity 1a can accommodate one or more inductors 2. For example, in the present application, the installation cavity 1a accommodates two inductor coils, the two inductor coils are the main bodies 21 of the inductors 2, the axial directions of the two inductor coils are parallel (this direction is defined as the axial direction of the inductors 2), and the two inductor coils have ends 22 on both sides along the axial direction, and the ends 22 connect the two inductor coils. Preferably, the axial direction of the inductor 2 is parallel to the length direction of the installation box 1.

[0029] like Figure 2 As shown, the installation box 1 has a bottom wall 15, one of the bottom wall 15 and the cold plate 3 is provided with a heat dissipation protrusion 151, and the other is provided with a heat dissipation groove 32. The heat dissipation protrusion 151 cooperates with the heat dissipation groove 32 to increase the contact area between the bottom wall 15 and the cold plate 3, thereby improving the heat dissipation effect of the cold plate 3 on the inductor 2. At the same time, the cooperation between the heat dissipation protrusion 151 and the heat dissipation groove 32 can limit the movement of the installation box 1 relative to the cold plate 3, so that the position of the installation box 1 relative to the cold plate 3 is determined, thereby playing a limiting role.

[0030] Specifically, in one embodiment, the heat dissipation groove 32 is provided on the cold plate 3 , and the heat dissipation protrusion 151 is provided on the bottom wall of the installation box 1 ; in another embodiment, the heat dissipation groove 32 is provided on the bottom wall 15 of the installation box 1 , and the heat dissipation protrusion 151 is provided on the cold plate 3 .

[0031] Optional, such as Figure 2 As shown, the heat dissipation protrusion 151 is a large protrusion, and the heat dissipation groove 32 is a large groove that matches the size of the heat dissipation protrusion 151. This structure has the advantages of simple structure and easy production.

[0032] Optional, such as Figure 3 As shown, the heat dissipation protrusion 151 is a plurality of raised heat dissipation teeth, and the heat dissipation groove 32 is a plurality of small grooves adapted to the heat dissipation teeth. The extension direction of the heat dissipation protrusion 151 and the heat dissipation groove 32 can be parallel to the length direction of the installation box 1, or parallel to the width direction of the installation box 1, or have an angle with the length direction of the installation box 1.

[0033] Furthermore, thermal conductive adhesive can be applied to the heat dissipation protrusion 151 and the heat dissipation groove 32 to fill the gap between the heat dissipation protrusion 151 and the heat dissipation groove 32 to ensure high heat transfer efficiency between the cold plate 3 and the mounting box 1 to ensure the heat dissipation effect on the inductor 2.

[0034] Furthermore, the shape of the flow channel 31 on the cold plate 3 corresponding to the installation box 1 is adapted to the shape of the heat dissipation protrusion 151 or the heat dissipation groove 32, so that the heat transfer effect between the cold plate 3 and the installation box 1 is more balanced. That is, when the heat dissipation groove 32 on the cold plate 3 is a groove of a larger size, the flow channel 31 corresponding to the installation box 1 is also provided with a groove structure of a larger size; when the heat dissipation groove 32 on the cold plate 3 is a plurality of small grooves, the flow channel 31 corresponding to the installation box 1 is also provided with a plurality of small groove structures.

[0035] In addition, the edges of the heat dissipation protrusion 151 and the heat dissipation groove 32 are designed with rounded corners, so as to reduce the mutual wear between the installation box 1 and the cold plate 3 when the two are matched.

[0036] like Figure 2 and Figure 3 As shown, the mounting box 1 has a first side wall 11 and a second side wall 12 relative to each other, the first side wall 11 has a first surface facing away from the second side wall 12, and the second side wall 12 has a second surface facing away from the first side wall 11, and the distance between the first surface and the second surface gradually increases in the direction approaching the cold plate 3, so that the area of ​​the surface of the bottom wall 15 facing the cold plate 3 is larger, that is, the contact area between the bottom wall 15 and the cold plate 3 is larger, thereby making the heat exchange efficiency between the mounting box 1 and the cold plate 3 higher, and the cold plate 3 has a better heat dissipation effect on the inductor 2.

[0037] Specifically, the first surface and / or the second surface has an angle α with the vertical direction, and the angle α satisfies: 5°≤α≤30°. For example, the angle α can be: 5°, 8°, 10°, 12°, 15°, 18°, 20°, 22°, 25°, 28°, 30°, etc.

[0038] The angle α between the first surface and / or the second surface and the vertical direction should not be too large or too small. If the angle α is too large (for example, greater than 30°), the space occupied by the installation box 1 will be too large, making it more difficult to arrange the installation box 1 on the cold plate 3. If the angle α is too small (for example, less than 5°), the surface area of ​​the bottom wall 15 facing the cold plate 3 cannot be effectively increased, and thus the heat dissipation effect of the cold plate 3 on the inductor 2 cannot be effectively improved. Therefore, the angle α between the first surface and / or the second surface and the vertical direction should be selected within an appropriate range.

[0039] It can be understood that the angle between the first surface and the vertical direction and the angle between the second surface and the vertical direction can be the same or different.

[0040] In addition, when producing the installation box 1 , the angle α between the first surface and / or the second surface and the vertical direction can reduce the difficulty of demoulding the installation box 1 and improve the production yield of the installation box 1 .

[0041] In a specific embodiment, Figure 2 and Figure 3 As shown, the thickness of the first side wall 11 and / or the second side wall 12 increases in the direction close to the cold plate 3, and a triangular prism-shaped accommodation cavity 1b is provided in the first side wall 11 and / or the second side wall 12. The accommodation cavity 1b accommodates a liquid cooling medium, and the cooling medium can be converted into a gas when the temperature reaches a preset temperature. The preset temperature can be the upper limit value of the suitable working temperature of the inductor 2, or slightly higher than the upper limit value, or slightly lower than the upper limit value.

[0042] In this embodiment, if Figure 2 and Figure 3 As shown, the thickness of the first side wall 11 and / or the second side wall 12 increases along the direction approaching the cold plate 3, so that the distance between the surface of the first side wall 11 facing the second side wall 12 and the surface of the second side wall 12 facing the first side wall 11 is basically consistent, so that the shape of the mounting cavity 1a is adapted to the shape of the inductor 2, preventing the inductor 2 from shaking in the mounting cavity 1a.

[0043] By setting a accommodating cavity 1b in the first side wall 11 and / or the second side wall 12, a cooling medium that can undergo phase change is injected into the accommodating cavity 1b. When the inductor 2 is working, the liquid cooling medium absorbs the heat generated by the inductor and then heats up. When the temperature rises to a preset temperature, the liquid cooling medium can continue to absorb heat and be converted into a gaseous state, so that the cooling medium has a strong heat absorption capacity, thereby effectively preventing the inductor 2 from overheating.

[0044] The shape of the accommodation cavity 1b is a triangular prism, so that the distance between the side wall of the accommodation cavity 1b and the first surface or the surface of the first side wall 11 facing the second side wall 12 is relatively consistent. At the same time, the area of ​​the side wall of the accommodation cavity 1b facing the cold plate 3 is larger, which is conducive to the transfer of heat to the cold plate 3, that is, the heat generated by the inductor 2 can be transferred to the cooling medium in the accommodation cavity 1b, and then transferred to the cold plate 3, and finally taken away by the coolant in the cold plate 3.

[0045] It can be understood that the accommodating cavity 1b can also be in other shapes, and the present application does not limit the shape of the accommodating cavity 1b.

[0046] In a specific embodiment, Figure 7 As shown, heat dissipation ribs 18 are arranged on the first surface and / or the second surface, and the heat dissipation ribs 18 extend from an end of the first surface or the second surface away from the cold plate 3 to an end close to the cold plate 3 .

[0047] In this embodiment, if Figure 7As shown, when the wind flows through the first surface or the second surface, the heat of the installation box can be transferred to the flowing wind, that is, air cooling and heat dissipation. Providing heat dissipation ribs 18 on the first surface and / or the second surface can increase the surface area of ​​the installation box 1, improve the effect of air cooling and heat dissipation, and further improve the heat dissipation effect on the inductor 2, so that the inductor 2 works at a suitable temperature. At the same time, the heat dissipation ribs 18 extend from the end of the first surface or the second surface away from the cold plate 3 to the end close to the cold plate 3, thereby increasing the proportion of heat transferred to the cold plate 3, so that the temperature of the inductor 2 is more balanced.

[0048] Optional, such as Figure 7 and Figure 8 As shown, along the direction close to the cold plate 3, the width of the heat dissipation ribs 18 increases, so that the proportion of heat transferred to the cold plate 3 increases, and the heat dissipation effect of the cold plate 3 is further improved. At the same time, along the direction close to the cold plate 3, the distance between adjacent heat dissipation ribs 18 gradually decreases, that is, the distance between adjacent heat dissipation ribs 18 in the area away from the cold plate 3 is greater than that in the area close to the cold plate 3. Since within a certain range, as the distance between adjacent heat dissipation ribs 18 increases, the air cooling effect increases, so this structure can make the area of ​​the installation box 1 away from the cold plate 3 mainly air cooling and liquid cooling as a supplement, and the area of ​​the installation box 1 close to the cold plate 3 mainly liquid cooling and air cooling as a supplement, so that the overall heat dissipation effect of the first side wall 11 and the second side wall 12 is more uniform, and the temperature difference at different positions of the inductor 2 is reduced.

[0049] The width of the heat dissipation ribs 18 may be between 1.5 mm and 2 mm, and the distance between adjacent heat dissipation ribs 18 may be between 1.5 mm and 3 mm. For example, the width of the heat dissipation ribs 18 may be 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, etc., and the distance between adjacent heat dissipation ribs 18 may be 1.5 mm, 1.8 mm, 2 mm, 2.2 mm, 2.5 mm, 2.8 mm, 3.0 mm.

[0050] The width of the heat dissipation rib 18 should not be too large or too small. If the width of the heat dissipation rib 18 is too large (for example, greater than 2 mm), the number of heat dissipation ribs 18 that can be arranged on the first side wall 11 or the second side wall 12 is limited, which reduces the air cooling effect and increases the weight and cost of the installation box 1. If the width of the heat dissipation rib 18 is too small (for example, less than 1.5 mm), the strength of the heat dissipation rib 18 will be reduced, making the heat dissipation rib 18 easily damaged and increasing the difficulty of processing the heat dissipation rib 18. Therefore, the width of the heat dissipation rib 18 between 1.5 mm and 2 mm can ensure the heat dissipation effect and reduce the production cost of the installation box 1.

[0051] The distance between adjacent heat dissipation ribs 18 should not be too large or too small. If the distance between adjacent heat dissipation ribs 18 is too small (for example, less than 1.5 mm), the convection between the gaps between adjacent heat dissipation ribs 18 and the outside world is small, and only a small amount of cold air from the outside can enter the gaps, resulting in a poor air cooling effect. If the distance between adjacent heat dissipation ribs 18 is too large (for example, greater than 3 mm), the number of heat dissipation ribs 18 that can be arranged on the first side wall 11 or the second side wall 12 is limited, which also results in a poor air cooling effect. Therefore, when the distance between adjacent heat dissipation ribs 18 is between 1.5 mm and 3 mm, the air cooling and heat dissipation effect of the installation box 1 can be better.

[0052] Optional, such as Figure 7 and Figure 8 As shown, along the direction approaching the cold plate 3, the height of the heat dissipation rib 18 protruding from the first side wall 11 or the second side wall 12 increases, which on the one hand increases the proportion of heat transferred to the cold plate 3, and on the other hand makes the surface area of ​​the bottom wall 15 facing the cold plate 3 larger, that is, the contact area between the bottom wall 15 and the cold plate 3 is larger.

[0053] Optionally, the heat dissipation ribs 18 may extend in a straight line or in a wavy shape. When the heat dissipation ribs 18 are in a wavy shape, the contact area between the heat dissipation ribs 18 and the air is increased, thereby improving the heat dissipation effect of air cooling.

[0054] Further, such as Figure 2 and Figure 3 As shown, there is an angle γ between the heat dissipation rib 18 and the vertical direction, and the angle γ satisfies: 6°≤γ≤35°. For example, the angle γ can be: 6°, 10°, 12°, 15°, 18°, 20°, 22°, 25°, 28°, 30°, 35°, etc.

[0055] The angle γ between the heat dissipation rib 18 and the vertical direction should not be too large or too small. If the angle γ is too large (for example, greater than 35°), the space occupied by the installation box 1 will be too large, which will increase the difficulty of arranging the installation box 1 on the cold plate 3. If the angle γ is too small (for example, less than 6°), the height of the heat dissipation rib 18 protruding from the first surface or the second surface is limited, and the heat cannot be dissipated well through air cooling. Therefore, the angle γ between the heat dissipation rib 18 and the vertical direction should be selected within a reasonable range. In addition, the angle γ between the heat dissipation rib 18 and the vertical direction should be greater than the angle α between the first surface and / or the second surface and the vertical direction, so that the heat dissipation rib 18 can protrude from the first surface or the second surface, and the protruding height gradually changes.

[0056] In addition, when producing the installation box 1 , the angle γ between the heat dissipation rib 18 and the vertical direction can reduce the difficulty of demoulding the installation box 1 and improve the production yield of the installation box 1 .

[0057] In a specific embodiment, Figure 2 , Figure 3 and Figure 7 As shown, the installation box 1 is provided with: a first support portion 16 and a second support portion 17, the first support portion 16 has an arc surface capable of supporting the main body 21, the second support portion 17 is arranged on both sides of the first support portion 16 along the axial direction of the inductor 2, and the second support portion 17 is a support rib that can support the end portion 22.

[0058] In this embodiment, if Figure 6 and Figure 7 As shown, the main body 21 of the inductor 2 is in the shape of multiple cylinders, so the first support portion 16 with an arc surface can support the main body 21 of the inductor 2. The two ends 22 of the inductor 2 are supported by the second support portion 17, and the second support portion 17 allows a certain gap between the surface of the main body 21 and the first support portion 16 to ensure the normal operation of the inductor. In order to ensure the heat dissipation effect of the inductor 2, there is a thermal conductive glue filling the gap between the main body 21 and the first support portion 16. Among them, the gap between the surface of the main body 21 and the first support portion 16 is between 2mm and 3mm, that is, the thickness of the thermal conductive glue is between 2mm and 3mm.

[0059] Specifically, the second support portion 17 includes a plurality of support ribs arranged at intervals, and the plurality of support ribs extend along the axial direction of the inductor 2 , thereby providing support for the end portion 22 of the inductor 2 while reducing the weight of the second support portion 17 , thereby reducing the weight of the installation box 1 .

[0060] More specifically, the first support portion 16 may include two arc surfaces arranged side by side, and the angle between the two edges of the arc surface extending along its axial direction and the fan-shaped area formed by the axis of the arc surface is between 120° and 175°, preferably 145°. It can be understood that when the mounting cavity 1a is designed to accommodate multiple inductors 2, the first support portion 16 is correspondingly configured to have multiple arc surfaces. The present application does not limit the degree of the angle of the fan-shaped area.

[0061] Furthermore, the shapes of the heat dissipation protrusion 151 and the heat dissipation groove 32 may also match the shape of the first support portion 16 , thereby improving the heat dissipation effect of the cold plate 3 on the inductor 2 .

[0062] Furthermore, the shape of the flow channel 31 on the cold plate 3 corresponding to the installation box 1 is also adapted to the shape of the first support portion 16 .

[0063] In a specific embodiment, Figure 7 and Figure 8 As shown, the mounting box 1 has a third side wall 13 and a fourth side wall 14 opposite to each other, the third side wall 13 has a third surface facing away from the fourth side wall 14, and the fourth side wall 14 has a fourth surface facing away from the third side wall 13, and the distance between the third surface and the fourth surface increases in the direction approaching the cold plate 3.

[0064] In this embodiment, if Figure 7 and Figure 8 As shown, the distance between the third surface and the fourth surface increases along the direction approaching the cold plate 3, further making the surface area of ​​the bottom wall 15 facing the cold plate 3 larger, that is, the contact area between the bottom wall 15 and the cold plate 3 is larger, thereby making the heat exchange efficiency between the mounting box 1 and the cold plate 3 higher, and the cold plate 3 has a better heat dissipation effect on the inductor 2.

[0065] It is understandable that heat dissipation ribs 18 may also be provided on the third side wall 13 and the fourth side wall 14 .

[0066] Specifically, the structure of the heat dissipation ribs 18 on the third side wall 13 and the fourth side wall 14 may be the same as the structure of the heat dissipation ribs 18 on the first side wall 11 and the second side wall 12. That is, the heat dissipation ribs 18 on the third side wall 13 or the fourth side wall 14 extend from one end of the third surface or the fourth surface away from the cold plate 3 to one end close to the cold plate 3; the width of the heat dissipation ribs 18 on the third side wall 13 or the fourth side wall 14 increases in the direction close to the cold plate 3; the width of the heat dissipation ribs 18 on the third side wall 13 or the fourth side wall 14 is between 1.5 mm and 2 mm, and the distance between adjacent heat dissipation ribs 18 is between 1.5 mm and 3 mm.

[0067] It can be understood that the structure of the heat dissipation ribs 18 on the third side wall 13 and the fourth side wall 14 may also be different from the structure of the heat dissipation ribs 18 on the first side wall 11 and the second side wall 12. For example, the heat dissipation ribs 18 on the third side wall 13 or the fourth side wall 14 may extend in a direction from the first side wall 11 to the second side wall 12; the heat dissipation ribs 18 on the third side wall 13 or the fourth side wall 14 may be in a wavy shape.

[0068] Specifically, Figure 8 As shown, the third surface and / or the fourth surface have an angle β with the vertical direction, and the angle β satisfies: 2°≤β≤15°. For example, the angle β can be: 2°, 3°, 5°, 8°, 10°, 12°, 14°, 15°, etc.

[0069] The angle β between the third surface and / or the fourth surface and the vertical direction should not be too large or too small. If the angle β is too large (for example, greater than 15°), the space occupied by the installation box 1 will be too large, making it more difficult to arrange the installation box 1 on the cold plate 3. If the angle β is too small (for example, less than 2°), the surface area of ​​the bottom wall 15 facing the cold plate 3 cannot be effectively increased, and thus the heat dissipation effect of the cold plate 3 on the inductor 2 cannot be effectively improved. Therefore, the angle β between the first surface and / or the second surface and the vertical direction should be selected within an appropriate range.

[0070] It can be understood that the angle between the third surface and the vertical direction and the angle between the fourth surface and the vertical direction can be the same or different.

[0071] In addition, when producing the installation box 1 , the angle β between the third surface and / or the fourth surface and the vertical direction can reduce the difficulty of demoulding the installation box 1 and improve the production yield of the installation box 1 .

[0072] In a specific implementation, a fan may also be provided inside the energy storage converter, and the fan is provided on one side or both sides of the extension direction of the heat dissipation ribs 18, so as to accelerate the flow of air between the heat dissipation ribs 18 and improve the air cooling effect.

[0073] For example, when the heat dissipation ribs 18 extend from an end away from the cold plate 3 to an end close to the cold plate 3, the fan can be arranged on the side of the installation box 1 away from the cold plate 3, that is, above the installation box 1, so that the fan can blow the air between the adjacent heat dissipation ribs 18 toward the cold plate 3, thereby improving the heat dissipation effect of the cold plate 3. When the heat dissipation ribs 18 on the third side wall 13 and the fourth side wall 14 extend in a direction from the first side wall 11 to the second side wall 12, the fan can be arranged at the corners of the installation box 1, which can be two opposite corners of the installation box 1, or two corners connected to the first side wall 11 or the second side wall 12.

[0074] In a specific embodiment, Figure 5 and Figure 7 As shown, the installation box 1 has an avoidance groove 19, which is arranged at the connection between the first side wall 11 and the third side wall 13 and the fourth side wall 14, and at the connection between the second side wall 12 and the third side wall 13 and the fourth side wall 14; the bottom wall 15 has a mounting surface 152 on one side facing the avoidance groove 19, and a mounting hole 153 is arranged on the mounting surface 152, and the connecting member passes through the mounting hole 153 to connect with the cold plate 3. Among them, the connecting member can be a fastener such as a screw or a screw.

[0075] In this embodiment, if Figure 5 and Figure 7 As shown, the connector passes through the mounting hole 153 and is connected to the cold plate 3, so that the mounting box 1 can be firmly fixed to the cold plate 3 to prevent the mounting box 1 and the cold plate 3 from being separated. By providing avoidance grooves 19 at the four corners of the mounting box 1, it is possible to provide necessary operating space for the installation of the connector, so that the connector can be smoothly and conveniently installed on the mounting box 1. At the same time, the provision of the avoidance grooves 19 causes both ends of the first side wall 11, the second side wall 12, the third side wall 13 and the fourth side wall 14 to be recessed into the mounting cavity 1a, and the recess can abut against the inductor 2, thereby limiting the position of the inductor 2 in the mounting cavity 1a, so that the inductor 2 will not move arbitrarily in the mounting cavity 1a, thereby improving the working stability of the inductor 2.

[0076] Further, such as Figure 2 and Figure 3 As shown, the width of the flow channel 31 on the cold plate 3 corresponding to the mounting box 1 is smaller than the distance between the two mounting holes 153 distributed along the width direction of the mounting box 1, so that the installation of the connecting piece will not damage the flow channel 31 to prevent the coolant in the flow channel 31 from leaking.

[0077] Furthermore, the axial direction of the inductor 2 is parallel to the flow direction of the coolant in the flow channel 31 on the cold plate 3 corresponding to the mounting box 1. A plurality of mounting boxes 1 can be arranged on the cold plate 3 at intervals along the flow direction of the coolant in the flow channel 31.

[0078] In a specific embodiment, Figure 1 and Figure 2 As shown, the installation box 1 does not have a top cover, that is, the installation cavity 1a can be connected to the outside through the top, and the inductor 2 installed in the installation cavity 1a can be electrically connected to other electronic components in the energy storage converter through the top of the installation box 1. At the same time, the top of the installation box 1 can also improve the heat dissipation effect of the inductor 2.

[0079] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An energy storage converter, characterized in that: The energy storage converter comprises: a mounting box (1), an inductor (2) and a cold plate (3); the mounting box (1) has a mounting cavity (1a); the inductor (2) is mounted in the mounting cavity (1a); and the mounting box (1) is mounted on the cold plate (3); The installation box (1) has a bottom wall (15), one of the bottom wall (15) and the cold plate (3) is provided with a heat dissipation protrusion (151), and the other is provided with a heat dissipation groove (32), and the heat dissipation protrusion (151) cooperates with the heat dissipation groove (32); The installation box (1) has a first side wall (11) and a second side wall (12) opposite to each other, the first side wall (11) has a first surface facing away from the second side wall (12), the second side wall (12) has a second surface facing away from the first side wall (11), and the distance between the first surface and the second surface gradually increases in a direction approaching the cold plate (3); The thickness of the first side wall (11) and / or the second side wall (12) increases in a direction approaching the cold plate (3); a triangular prism-shaped accommodation cavity (1b) is provided in the first side wall (11) and / or the second side wall (12); a liquid cooling medium is accommodated in the accommodation cavity (1b); the cooling medium can be converted into a gaseous state when the temperature reaches a preset temperature; the preset temperature is the upper limit value of the suitable working temperature of the inductor (2).

2. The energy storage converter according to claim 1, characterized in that: A plurality of the heat dissipation protrusions (151) and / or the heat dissipation grooves (32) are arranged along the axial direction of the inductor (2).

3. The energy storage converter according to claim 1, characterized in that: The first surface and / or the second surface is provided with heat dissipation ribs (18), and the heat dissipation ribs (18) extend from an end of the first surface or the second surface away from the cold plate (3) to an end close to the cold plate (3).

4. The energy storage converter according to claim 3, characterized in that: The width of the heat dissipation rib (18) increases in a direction approaching the cold plate (3); And / or, along a direction approaching the cold plate (3), the height of the heat dissipation rib (18) protruding from the first side wall (11) or the second side wall (12) increases.

5. The energy storage converter according to claim 1, characterized in that: The shape of the flow channel (31) on the cold plate (3) is adapted to the shape of the heat dissipation protrusion (151) or the heat dissipation groove (32); The cold plate (3) is provided with a plurality of the heat dissipation protrusions (151) or the heat dissipation grooves (32), and the flow channel (31) is correspondingly provided with a plurality of protrusions or grooves.

6. The energy storage converter according to claim 1, characterized in that: The inductor (2) comprises a main body (21) and an end portion (22), wherein the end portion (22) is arranged on two sides of the main body (21); The installation box (1) is provided with: A first support portion (16), the first support portion (16) having a curved surface capable of supporting the main body (21); A second support portion (17), the second support portion (17) being arranged on both sides of the first support portion (16) along the axial direction of the inductor (2), the second support portion (17) being a support rib, and the support rib being capable of supporting the end portion (22).

7. The energy storage converter according to claim 1, characterized in that: An angle α is formed between the first surface and / or the second surface and the vertical direction, and the angle α satisfies: 5°≤α≤30°.

8. The energy storage converter according to any one of claims 1 to 7, characterized in that: The installation box (1) has a third side wall (13) and a fourth side wall (14) opposite to each other, the third side wall (13) has a third surface facing away from the fourth side wall (14), the fourth side wall (14) has a fourth surface facing away from the third side wall (13), and the distance between the third surface and the fourth surface increases in a direction approaching the cold plate (3).

9. The energy storage converter according to claim 8, characterized in that: The installation box (1) has an avoidance groove (19), and the avoidance groove (19) is arranged at the connection between the first side wall (11) and the third side wall (13), and the fourth side wall (14), and at the connection between the second side wall (12) and the third side wall (13), and the fourth side wall (14); The bottom wall (15) has a mounting surface (152) on one side facing the avoidance groove (19), and a mounting hole (153) is provided on the mounting surface (152). A connecting piece passes through the mounting hole (153) to be connected to the cold plate (3).

10. An energy storage device, characterized in that: The energy storage device comprises: a body and the energy storage converter according to any one of claims 1-9.

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