Shell for energy storage converter and energy storage converter

Abstract

The utility model discloses a shell for an energy storage converter and the energy storage converter. The shell comprises a box body, a cover body and a sealing piece, the box body comprises a bottom wall, a side wall and a containing cavity, the end, opposite to the bottom wall, of the side wall is provided with a first folding edge bent towards the containing cavity, and the first folding edge is provided with a containing groove; the cover body is used for sealing the box body, and the cover body is detachably connected with the box body; the sealing piece is made of an elastic deformation material, the sealing piece is clamped between the cover body and the first folding edge, at least part of the sealing piece is arranged in the containing groove, and the thickness of the sealing piece is larger than the depth of the containing groove; when the cover body is connected with the box body, the sealing piece is extruded and deformed, and the sealing piece abuts against the first folding edge and the cover body at the same time. According to the embodiment of the invention, the housing can achieve the waterproof performance through the extrusion deformation of the sealing part in the accommodating groove, and meanwhile, other parts, except the accommodating groove, of the first folding edge can be in contact with the cover body to reduce the contact resistance of the housing, and the electromagnetic compatibility is improved.

Description

Technical Field

[0001] This application belongs to the technical field of converters, and particularly relates to a housing for an energy storage converter and an energy storage converter. Background Art

[0002] An energy storage converter (Power Conversion System, PCS) is a device that controls the charging and discharging processes of a storage battery for AC-DC conversion, and can directly supply power to AC loads in the absence of a power grid. Energy storage converters are generally installed outdoors, and waterproof design is required for their housings.

[0003] The housing of an energy storage converter is often processed by die-casting or sheet metal forming processes. Among them, limited by process conditions, the structure of the sheet metal formed housing is relatively simple, and its waterproof function is mostly realized by snap-in rubber strips, which cannot meet the application scenarios with high electromagnetic compatibility requirements. Summary of the Utility Model

[0004] An embodiment of this application provides a housing for an energy storage converter and an energy storage converter. The housing provides a sealing structure in which a box body contacts a shell, and can improve the electromagnetic compatibility of the energy storage converter while realizing the waterproof design.

[0005] In a first aspect, an embodiment of this application provides a housing for an energy storage converter. The housing includes a box body, a cover body, and a sealing member. The box body includes a bottom wall, a side wall, and a receiving cavity. One end of the side wall facing away from the bottom wall has a first folding edge bent towards the receiving cavity, and the first folding edge has a receiving groove; the cover body is used to cover the box body, and the cover body is detachably connected to the box body; the sealing member is an elastic deformation member, the sealing member is clamped between the cover body and the first folding edge, and at least part of it is arranged in the receiving groove, and the thickness of the sealing member is greater than the depth of the receiving groove;

[0006] In a state where the cover body covers the box body, the sealing member deforms and abuts against the first folding edge and the cover body.

[0007] In some embodiments, the first folding edge includes a connecting portion, a first bending portion, a second bending portion, and a third bending portion connected in sequence. The connecting portion is connected to the side wall of the box body and contacts the cover body, and the first bending portion, the second bending portion, and the third bending portion together form the receiving groove.

[0008] In some embodiments, the first folding edge further includes a fourth bending portion. The fourth bending portion is connected to the third bending portion, and the fourth bending portion is disposed opposite to the cover body. When the box body is connected to the cover body, the fourth bending portion contacts the cover body.

[0009] In some embodiments, along the extending direction of the connecting portion, the shortest distance between the first bending portion and the third bending portion is greater than the length of the sealing member.

[0010] In some embodiments, the first folding edge includes a connecting portion and a fifth bending portion. The connecting portion is formed with a rib protruding toward the cover body. An accommodation groove is formed between the rib and the fifth bending portion. The seal is clamped between the cover body and the rib.

[0011] In some embodiments, the orthographic projection of the seal on the first folding edge at least covers the rib and at least part of the accommodation groove.

[0012] In some embodiments, the cover body includes a second folding edge that extends toward the box body and is detachably connected to the side wall of the box body.

[0013] In some embodiments, the second folding edge is connected to the side wall of the box body by a threaded connector.

[0014] In some embodiments, the wall surface of the box body in contact with the cover body is provided with a conductive layer; and / or,

[0015] The wall surface of the cover body in contact with the box body is provided with a conductive layer.

[0016] In a second aspect, an embodiment of the present application provides an energy storage converter, which includes the housing for the energy storage converter provided in any of the foregoing embodiments.

[0017] The housing for the energy storage converter in the embodiment of the present application is provided with a first folding edge on the box body, and an accommodation groove is formed on the basis of the first folding edge. The accommodation groove can increase the structural strength of the first folding edge while accommodating the seal. The thickness of the seal is greater than the depth of the accommodation groove. When the box body and the cover body are connected, the seal is extruded and expands in the width direction of the accommodation groove, and at the same time abuts against the accommodation groove and the cover body to achieve the sealing and waterproof performance of the housing. The part of the first folding edge except the accommodation groove can contact the cover body, reducing the contact resistance of the housing, thereby improving the electromagnetic compatibility of the housing and broadening the application scenarios of the energy storage converter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0019] Figure 1 is an exploded structural schematic diagram of the housing for the energy storage converter provided by the embodiment of the present application;

[0020] Figure 2 is Figure 1 a combined state structural schematic diagram of the shown housing;

[0021] Figure 3 is Figure 1Schematic diagram of the split structure of the housing body and the cover shown

[0022] Figure 4 Another exploded structure diagram of the housing for the energy storage converter provided by the embodiment of the present application

[0023] Figure 5 Another structure diagram of the housing for the energy storage converter provided by the embodiment of the present application

[0024] The reference numerals in the accompanying drawings in the specific embodiments are as follows

[0025] Housing body 100; First folding edge 110; Accommodating groove 1101; Connecting portion 111; Rib 1111; First bending portion 112; Second bending portion 113; Third bending portion 114; Fourth bending portion 115; Fifth bending portion 116; Mounting portion 120; First mounting hole 121

[0026] Cover body 200; Second folding edge 210; Second mounting hole 211

[0027] Seal 300 Specific embodiments

[0028] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above accompanying drawings are intended to cover non-exclusive inclusion

[0030] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, "a plurality of" means more than two unless otherwise specifically defined

[0031] Reference to "embodiments" in this document means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment each time, nor are they independent or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0032] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally represents an "or" relationship between the associated objects before and after.

[0033] In the description of the embodiments of this application, the term "plural" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0034] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application.

[0035] In the description of the embodiments of this application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "coupling", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication 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 this application can be understood according to specific circumstances.

[0036] A power conversion system (PCS) is a device that controls the charging and discharging processes of a battery for AC-DC conversion and can directly supply power to AC loads in the absence of a power grid. The PCS is generally installed outdoors, and a waterproof design is required for its enclosure.

[0037] The housing of the energy storage converter is often processed by die-casting molding process or sheet metal forming process. Among them, the structure of the housing formed by sheet metal is relatively single, and the waterproof function is mostly realized by using a snap-in rubber strip. The cover body or the box body can be inserted into the rubber strip and abutted against the other through the rubber strip to achieve the waterproof design of the housing. However, the structure and connection method of the snap-in rubber strip hinder the contact between the box body and the cover body, resulting in a significant increase in the contact resistance between the box body and the cover body, generating large electromagnetic interference, and making it impossible to meet the application scenarios with requirements for electromagnetic compatibility.

[0038] In the related art, in order to meet the requirements of waterproof performance and electromagnetic compatibility at the same time, some housing products of energy storage converters adopt conductive waterproof rubber strips to reduce the contact resistance. However, there are few optional models and high costs for this kind of conductive waterproof rubber strip with a steel skeleton inside. For large-size energy storage converter products, it will bring a significant increase in waterproof costs and affect the product competitiveness. In addition, in order to ensure the installation stability, the snap-in rubber strip has high requirements for the length of the box body or the cover body extending into the rubber strip, resulting in an increase in welding costs and processing time, especially not suitable for large-size energy storage converter products.

[0039] In order to solve the problems of the existing technology, the embodiments of the present application provide a housing for an energy storage converter and an energy storage converter, which can improve the electromagnetic compatibility of the energy storage converter while realizing the sealing and waterproof performance, and broaden the application scenarios of the energy storage converter. The following combines Figures 1 to 5 to introduce the housing for an energy storage converter and the energy storage converter provided by the embodiments of the present application.

[0040] In the first aspect, please refer to Figures 1 to 3 , the embodiments of the present application provide a housing for an energy storage converter. The housing includes a box body 100, a cover body 200 and a seal 300. The box body 100 includes a first folding edge 110, and the first folding edge 110 has a receiving groove 1101; the cover body 200 is used to cover the box body 100, and the cover body 200 is detachably connected to the box body 100; the seal 300 is an elastic deformation member, the seal 300 is clamped between the cover body 200 and the first folding edge 110, and at least part of it is arranged in the receiving groove 1101. The thickness of the seal 300 is greater than the depth of the receiving groove 1101; in the state where the cover body 200 covers the box body 100, the seal 300 deforms and abuts against the first folding edge 110 and the cover body 200.

[0041] Thus, when the cover body 200 is connected to the box body 100, other parts of the first folding edge 110 except the accommodating groove 1101 can contact the box body 100, increasing the contact area between the box body 100 and the cover body 200 to reduce the conduction resistance of the outer shell, thereby improving the electromagnetic compatibility of the energy storage converter. A seal 300 is arranged in the accommodating groove 1101, and the thickness of the seal 300 is greater than the depth of the accommodating groove 1101 to ensure that both sides of the seal 300 are in contact with the box body 100 and the cover body 200 simultaneously after the box body 100 and the cover body 200 are connected, enhancing the waterproof sealing performance of the outer shell. The width and depth of the accommodating groove 1101 can be designed according to the energy storage converter product, and then an ordinary waterproof rubber strip is selected as the seal 300 according to the specifications of the accommodating groove 1101, without the need to use a snap-in rubber strip with conductive properties, which is beneficial to cost control of the outer shell product of the energy storage converter and improves product competitiveness.

[0042] Specifically, the box body 100 includes a bottom wall, side walls and an accommodating cavity. The first folding edge 110 is formed by bending one end of the side wall away from the bottom wall towards the accommodating cavity. The first folding edges 110 are arranged in one-to-one correspondence with the side walls, and the first folding edges 110 of two adjacent side walls are welded waterproofly to be sealed and fixed.

[0043] It can be understood that, compared with the seal structure using a snap-in rubber strip in the related art, the outer shell provided in this application simplifies the seal structure by arranging the first folding edge 110 and the accommodating groove 1101, reduces the size of the seal structure to reduce the weld length, lowers the process difficulty and reduces the processing cost. Different specifications and materials of the seal 300 can be flexibly selected in the accommodating groove 1101 to adjust the sealing performance of the outer shell.

[0044] Optionally, the cross-section of the seal 300 is rectangular, and the upper wall surface and the lower wall surface of the rectangle are in sealing contact with the cover body 200 and the bottom of the accommodating groove 1101 respectively.

[0045] Optionally, two sealing lips are formed at the upper end of the seal 300, and the two sealing lips extend obliquely in directions away from each other.

[0046] Optionally, two sealing lips are formed at the lower end of the seal 300, and the two sealing lips extend obliquely in directions away from each other.

[0047] Optionally, the seal 300 is a rubber part.

[0048] Optionally, the seal 300 is a silica gel part.

[0049] Please refer to Figure 2, according to some embodiments of the present application, the first folding edge 110 includes a connecting portion 111, a first bending portion 112, a second bending portion 113, and a third bending portion 114 that are connected in sequence. The connecting portion 111 is connected to the side wall of the box body 100 and contacts the cover body 200. The first bending portion 112, the second bending portion 113, and the third bending portion 114 together form a receiving groove 1101.

[0050] Optionally, the first bending portion 112 is formed perpendicular to the connecting portion 111.

[0051] Optionally, the second bending portion 113 is formed perpendicular to the first bending portion 112.

[0052] Optionally, the first bending portion 112 and the third bending portion 114 are symmetrically formed with respect to the second bending portion 113.

[0053] Thus, the first folding edge 110 can be directly formed by bending during the processing of the sheet metal box body 100, reducing the processing difficulty of the receiving groove 1101. At the same time, as a sheet metal part, the first folding edge 110 improves the structural strength during the process of forming the receiving groove 1101 by multiple bends, which helps to improve the sealing performance of the sealing member 300 and the service life of the housing.

[0054] In some of these embodiments, the upper end surface of the third bending portion 114 is set higher than the connecting portion 111 to compensate for the sinking deformation of the first folding edge 110 caused by the sealing member 300 pressing on the receiving groove 1101, so that the third bending portion 114 can contact the cover body 200, increasing the contact area between the box body 100 and the cover body 200 to reduce the contact resistance of the housing and improve the electromagnetic compatibility of the energy storage converter.

[0055] In some of these embodiments, the upper end surface of the third bending portion 114 is flush with the connecting portion 111. When the box body 100 is connected to the cover body 200, the connecting portion 111 and the third bending portion 114 can contact the cover body 200 simultaneously.

[0056] Please refer to Figure 4 , according to some embodiments of the present application, the first folding edge 110 further includes a fourth bending portion 115. The fourth bending portion 115 is connected to the third bending portion 114. The fourth bending portion 115 is disposed opposite to the cover body 200. When the box body 100 is connected to the cover body 200, the fourth bending portion 115 can contact the cover body 200.

[0057] Optionally, the fourth bending portion 115 is set higher than the connecting portion 111.

[0058] Optionally, the fourth bending portion 115 is flush with the connecting portion 111.

[0059] Optionally, the fourth bending portion 115 is perpendicular to the third bending portion 114.

[0060] Optionally, the included angle between the fourth bending portion 115 and the third bending portion 114 is equal to the included angle between the connecting portion 111 and the first bending portion 112.

[0061] Thereby, the fourth bending portion 115 can increase the contact area between the box body 100 and the cover body 200, further reduce the contact resistance between the box body 100 and the cover body 200 to improve the electromagnetic compatibility of the energy storage converter. At the same time, the fourth bending portion 115 can increase the number of bending times of the first folding edge 110 to enhance the structural strength of the first folding edge 110, and improve the reliability and service life of the housing product.

[0062] Please refer to Figure 2 or Figure 4 , according to some embodiments of the present application, along the extending direction of the connecting portion 111, the shortest distance between the first bending portion 112 and the third bending portion 114 is greater than the length of the sealing member 300.

[0063] Optionally, along the extending direction of the connecting portion 111, the first bending portion 112, the second bending portion 113 and the third bending portion 114 are connected to form a rectangular accommodating groove, and the length of the sealing member 300 is less than the width of the rectangular accommodating groove.

[0064] Optionally, along the extending direction of the connecting portion 111, the first bending portion 112, the second bending portion 113 and the third bending portion 114 are connected to form a trapezoidal accommodating groove, and the length of the sealing member 300 is less than the length of the notch of the trapezoidal accommodating groove.

[0065] Optionally, along the extending direction of the connecting portion 111, the first bending portion 112, the second bending portion 113 and the third bending portion 114 are connected to form an inverted trapezoidal accommodating groove, and the length of the sealing member 300 is less than the length of the bottom of the inverted trapezoidal accommodating groove.

[0066] Thereby, the sealing member 300 can be smoothly placed into the accommodating groove 1101. At the same time, when the cover body 200 is connected to the box body 100 and squeezes the sealing member 300, the sealing member 300 can be fully deformed in the accommodating groove 1101 to ensure the waterproof sealing performance of the housing, and reduce the probability that the sealing member 300 is extruded out of the accommodating groove 1101 during the extrusion deformation process.

[0067] Please refer to Figure 5 , according to some embodiments of the present application, the first folding edge 110 includes a connecting portion 111 and a fifth bending portion 116, and the fifth bending portion 116 is bent and formed from the connecting portion 111 toward the cover body 200. The connecting portion 111 is further formed with a rib 1111 protruding toward the cover body 200, and an accommodating groove 1101 is formed between the rib 1111 and the fifth bending portion 116.

[0068] Optionally, the fifth bending portion 116 is disposed higher than the rib 1111 of the connecting portion 111, and the seal 300 is clamped between the cover body 200 and the rib 1111.

[0069] Optionally, the fifth bending portion 116 is flush with the rib 1111 of the connecting portion 111, and the seal 300 is clamped between the connecting portion 111 and the cover body 200.

[0070] Thus, the first folding edge 110 can form the receiving groove 1101 through one bending process and one stamping process, shortening the processing time of the first folding edge 110, reducing the processing difficulty, and facilitating the mass production of the energy storage converter housing product. At the same time, part of the connecting portion 111 is used as the bottom of the receiving groove 1101 to accommodate the seal 300, reducing the proportion of the first folding edge 110 in the thickness direction of the box body 100, reducing the occupied space of the seal 300 and the first folding edge 110, and improving the utilization rate of the internal space of the box body 100.

[0071] Furthermore, according to some embodiments of the present application, the orthographic projection of the seal 300 on the first folding edge 110 at least covers the rib 1111 and part of the receiving groove 1101.

[0072] Optionally, the orthographic projection of the seal 300 on the first folding edge 110 covers the rib 1111 and the entire receiving groove 1101. The fifth bending portion 116 is disposed higher than the rib 1111 of the connecting portion 111. The fifth bending portion 116 can contact the cover body 200 to reduce the contact resistance while restricting the deformation space of the seal 300, ensuring the realization of the waterproof and sealing effect between the box body 100 and the cover body 200.

[0073] Optionally, the seal 300 is fixed to the cover body 200 so that when the cover body 200 is connected to the box body 100, the seal 300 is located at a specified position, ensuring that the seal 300 can abut against both the rib 1111 and the cover body 200 to achieve waterproof sealing.

[0074] Optionally, the seal 300 is adhesively fixed to the wall surface of the cover body 200 facing the box body 100.

[0075] Thus, when the box body 100 is connected to the cover body 200, the rib 1111 protruding relative to the connecting portion 111 can further apply a load to the seal 300, improving the stability of the seal 300 and ensuring the waterproof and sealing effect of the energy storage converter.

[0076] Please refer to Figure 3 , according to some embodiments of the present application, the cover body 200 includes a second folding edge 210, and the second folding edge 210 extends toward the box body 100 and is detachably connected to the side wall of the box body 100.

[0077] Optionally, the second folding edge 210 overlaps the box body 100 to facilitate the disassembly and assembly of the box body 100 and the cover body 200.

[0078] Optionally, the second folding edge 210 is inserted into the box body 100 to enhance the connection stability between the box body 100 and the cover body 200.

[0079] Thus, the cover body 200 is detachably mounted on the box body 100 through the second folding edge 210 to facilitate the disassembly and assembly of the cover body 200 for the maintenance of the energy storage converter, improve the flatness of the exposed panel part of the cover body 200, contribute to the improvement of the waterproof and dustproof sealing performance of the energy storage converter housing product. At the same time, the second folding edge 210 can be directly formed by bending, which is convenient for the sheet metal processing of the cover body 200.

[0080] According to some embodiments of the present application, the second folding edge 210 and the side wall of the box body 100 are connected by a threaded connector.

[0081] Optionally, an installation portion 120 recessed toward the accommodation cavity is formed on the side wall of the box body 100. A first installation hole 121 is provided in the installation portion 120, and a second installation hole 211 is provided in the second folding edge 210. The number and positions of the first installation hole 121 and the second installation hole 211 are set in one-to-one correspondence so that a bolt can pass through the first installation hole 121 and the second installation hole 211 to realize the connection between the second folding edge 210 and the installation portion 120.

[0082] Thus, the threaded connector can adjust the connection tightness while connecting the second folding edge 210 and the side wall of the box body 100, so that the second folding edge 210 can keep in contact with the side wall of the box body 100 to increase the contact area between the box body 100 and the cover body 200, thereby reducing the contact resistance and improving the electromagnetic compatibility.

[0083] According to some embodiments of the present application, a conductive layer is provided on the wall surface of the box body 100 for contacting the cover body 200.

[0084] Optionally, the box body 100 is made of a material with excellent conductive performance. Exemplarily, the box body 100 is a workpiece made of aluminum alloy Al5052.

[0085] Optionally, a conductive layer is formed by spraying a conductive material on the wall surface of the box body 100 for contacting the cover body 200.

[0086] Thus, the conductive performance of the box body 100 is improved, the contact resistance between the box body 100 and the cover body 200 is reduced, and the electromagnetic compatibility of the energy storage converter housing product is improved.

[0087] According to some embodiments of the present application, a conductive layer is provided on the wall surface of the cover body 200 for contacting the box body 100.

[0088] Optionally, the cover 200 is made of a material with excellent electrical conductivity. Exemplarily, the cover 200 is a workpiece made of aluminum alloy Al5052.

[0089] Optionally, a conductive layer is formed by spraying a conductive material on the wall surface of the cover 200 that is used to contact the box body 100.

[0090] Thereby, the electrical conductivity of the cover 200 is improved, the contact resistance between the cover 200 and the box body 100 is reduced, and the electromagnetic compatibility of the energy storage converter housing product is improved.

[0091] In a second aspect, an embodiment of the present application provides an energy storage converter, which includes the housing for the energy storage converter provided in any of the foregoing embodiments. Therefore, the energy storage converter has all the beneficial effects of the foregoing housing.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A housing for an energy storage converter, characterized in that: include: A box body, the box body comprising a bottom wall, a side wall and a receiving cavity, the end of the side wall facing away from the bottom wall having a first folded edge bent toward the receiving cavity, the first folded edge having a receiving groove; A cover body, the cover body is used to cover the box body, and the cover body is detachably connected to the box body; A sealing member, wherein the sealing member is an elastically deformable member, and is sandwiched between the cover body and the first folded edge, and is at least partially disposed in the receiving groove, and the thickness of the sealing member is greater than the depth of the receiving groove; When the cover body is covered on the box body, the sealing member is deformed and comes into contact with the first folded edge and the cover body.

2. The housing for the energy storage converter according to claim 1, characterized in that: The first folded edge includes a connecting portion, a first bending portion, a second bending portion and a third bending portion which are connected in sequence, the connecting portion is connected to the side wall of the box body and contacts the cover body, and the first bending portion, the second bending portion and the third bending portion together form the accommodating groove.

3. The housing for the energy storage converter according to claim 2, characterized in that: The first folded edge further includes a fourth bending portion, the fourth bending portion is connected to the third bending portion, the fourth bending portion is arranged opposite to the cover body, and when the box body is connected to the cover body, the fourth bending portion contacts the cover body.

4. The housing for the energy storage converter according to claim 2 or 3, characterized in that: Along the extending direction of the connecting portion, the shortest distance between the first bending portion and the third bending portion is greater than the length of the sealing member.

5. The housing for the energy storage converter according to claim 1, characterized in that: The first folded edge includes a connecting portion and a fifth bending portion, the connecting portion is formed with a convex rib protruding toward the cover body, the accommodating groove is formed between the convex rib and the fifth bending portion, and the sealing member is sandwiched between the cover body and the convex rib.

6. The housing for the energy storage converter according to claim 5, characterized in that: The orthographic projection of the sealing member on the first folded edge at least covers the convex rib and at least a portion of the accommodating groove.

7. The housing for the energy storage converter according to claim 1, characterized in that: The cover body comprises a second folded edge, which extends toward the box body and is detachably connected to the side wall of the box body.

8. The housing for the energy storage converter according to claim 7, characterized in that: The second folded edge is connected to the side wall of the box body via a threaded connector.

9. The housing for the energy storage converter according to claim 7, characterized in that: The wall surface of the box body in contact with the cover body is provided with a conductive layer; and / or, A conductive layer is provided on the wall surface of the cover body contacting the box body.

10. An energy storage converter, characterized in that: It comprises a housing for an energy storage converter as claimed in any one of claims 1 to 9.

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