Shell structure and energy storage device

Abstract

The utility model relates to a shell structure and an energy storage device. The shell structure comprises a first shell and a detachably connected second shell, the first shell is provided with a first mounting cavity with a first opening, and the second shell is connected with the first shell and can seal the first opening. Thus, during assembly, the main body unit can be installed in the first installation cavity of the first shell through the first opening of the first shell and then is in butt joint with the second shell, that is, when the main body unit and the shell structure are assembled, a worker can observe the main body unit through the first opening of the first shell; therefore, the second shell can avoid the main body unit, the risk that the second shell is scratched with the main body unit can be reduced, and compared with blind-view installation operation of a full-wrapping shell and the main body unit in the prior art, the main body unit can be observed through the first opening without worrying about the problem that the second shell is scratched with the main body unit; and the assembling difficulty of assembling the main body unit in the shell structure is reduced.

Description

Technical Field

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

[0002] An integrated energy storage system (ESS) is a device that integrates energy storage and energy conversion functions. It typically consists of an energy storage device (such as a battery module or supercapacitor), an energy converter (such as an inverter or frequency converter), and a control system. ESS converts electrical energy into stored energy and then releases it as electricity when needed to supply the grid or other loads.

[0003] Among them, the main unit in the energy storage device is installed in the shell and is protected by the shell. The main unit includes a battery module and a power module, etc.

[0004] In the related art, when the main unit is assembled in the shell, it is necessary to avoid scratches with the shell. However, the existing shell is a fully enclosed shell. During assembly, the shell will block the main unit, resulting in a lack of a good field of view to observe the main unit, that is, the main unit is installed in a blind field of view, which makes the main unit and the shell have a greater risk of scratches, making it more difficult to assemble the main unit to the shell. Utility Model Content

[0005] Based on this, it is necessary to provide a shell structure to address the problem of difficult assembly of existing energy storage devices.

[0006] A housing structure is applied to a main unit of an energy storage device, the housing structure comprising:

[0007] A first housing is configured with a first mounting cavity for mounting the main unit; the first mounting cavity has a first opening;

[0008] The second shell is detachably connected to the first shell and is capable of closing the first opening.

[0009] In one embodiment, along the installation direction of the main unit, the first portion of the main unit protrudes from the first installation cavity via the first opening;

[0010] The second shell cover is disposed on the first portion of the main body unit.

[0011] In one embodiment, along the installation direction of the main body unit, the depth of the first installation cavity is smaller than the height of the main body unit.

[0012] In one embodiment, the main unit includes a battery module, the first installation cavity includes a battery compartment, and a positioning portion for positioning the battery module is provided in the battery compartment; and / or,

[0013] The main body unit includes a power module, and the first installation cavity includes a power compartment for installing the power module.

[0014] In one embodiment, the first shell and the second shell are respectively provided with a first butt joint end surface and a second butt joint end surface, and the first butt joint end surface and the second butt joint end surface are overlapped.

[0015] In one embodiment, both the first butt joint end surface and the second butt joint end surface are planes.

[0016] In one embodiment, the housing structure further includes an outer shell, and the outer shell is provided to cover the first housing and the second housing.

[0017] In one embodiment, the housing includes a third shell, the third shell is configured with a first mounting groove having a second opening, and the first shell and / or the second shell is connected to a groove wall of the first mounting groove.

[0018] In one embodiment, one of the third shell and the first shell is provided with a slide rail, and the other is provided with a slide groove for slidingly cooperating with the slide rail.

[0019] In one embodiment, the housing further includes a fourth shell detachably connected to the third shell, and the fourth shell is capable of closing the second opening.

[0020] In one embodiment, the third housing includes a first cover plate and at least one first side plate, the first cover plate is vertically connected to the first side plate, and the two cooperate to enclose the first mounting groove;

[0021] The fourth shell includes a second cover plate and at least one second side plate detachably connected to the second cover plate, and the second cover plate and the second side plate cooperate to close the second opening.

[0022] In one embodiment, one of the second cover plate and the first housing is provided with a first clamping portion, and the other is provided with a first clamping groove for cooperating with the first clamping portion; and / or,

[0023] One of the second cover plate and the second side plate is provided with a second clamping portion, and the other is provided with a second clamping groove for cooperating with the second clamping portion.

[0024] In one embodiment, the main unit includes a heat dissipation module, and the second cover plate is provided with a first heat dissipation slot, and the first heat dissipation slot faces the air inlet of the heat dissipation module;

[0025] The second side plate is provided with a second heat dissipation slot, and the second heat dissipation slot faces the air outlet of the heat dissipation module.

[0026] In one embodiment, a plurality of ribs are provided at intervals on the inner wall of the third shell facing the second shell.

[0027] An energy storage device comprises the shell structure described above.

[0028] The above-mentioned shell structure includes a first shell and a detachably connected second shell. During assembly, the main unit can be installed in the first installation cavity of the first shell through the first opening of the first shell, and then docked with the second shell. That is to say, the shell structure is a split structure. When assembling the main unit and the shell structure, the staff can observe the main unit through the first opening of the first shell, and then the second shell can avoid the main unit, thereby reducing the risk of scratching between the second shell and the main unit. Compared with the operation of blindly installing the full-enclosed shell and the main unit in the prior art, the present application can observe the main unit through the first opening without worrying about the problem of scratching between the second shell and the main unit, thereby reducing the difficulty of assembling the main unit in the shell structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of an inverted energy storage device provided in one embodiment of the present application.

[0030] Figure 2 for Figure 1 The exploded diagram of the energy storage device shown is upright.

[0031] Figure 3 for Figure 2 The energy storage device shown is a partial schematic diagram hiding the second housing and the third housing.

[0032] Figure 4 for Figure 2 The exploded schematic diagram of the first shell and the second shell in the energy storage device is shown.

[0033] Figure 5 for Figure 2 Schematic diagram of the third shell in the energy storage device shown.

[0034] Figure 6 for Figure 1 Schematic diagram of an explosion showing the energy storage device in an inverted position.

[0035] Figure 7 for Figure 6 A schematic diagram of the first shell in the energy storage device shown.

[0036] Reference numerals: 10, energy storage device; 100, housing structure; 110, first housing; 111, first mounting cavity; 1111, power compartment; 1112, battery compartment; 112, first opening; 113, positioning portion; 114, first docking end face; 115, slide groove; 116, first clamping groove; 120, second housing; 121, second docking end face; 130, housing; 140, third housing; 141, first mounting groove; 142, second opening; 143 , slide rail; 144, first cover plate; 145, first side plate; 146, rib plate; 150, fourth shell; 151, second cover plate; 1511, first clamping portion; 1512, second clamping portion; 1513, first heat dissipation slot; 152, second side plate; 1521, second clamping slot; 1522, second heat dissipation slot; 200, main unit; 201, first part; 210, copper busbar; 220, battery module; 230, power module; 240, heat dissipation module. DETAILED DESCRIPTION

[0037] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0038] In the description of this application, it should be understood that if the 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. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0039] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0040] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0041] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0043] like Figure 2 As shown, an embodiment of the present application provides a shell structure 100, which is applied to the main unit 200 of the energy storage device 10. Generally, the main unit 200 includes a battery module 220 and a power module 230. The battery module 220 is one of the core components of the energy storage device 10 and is responsible for storing and releasing electrical energy; the power module 230 is mainly responsible for the conversion and control of electrical energy. The power module 230 usually includes power electronic devices such as inverters, rectifiers, choppers, etc., which are used to achieve efficient conversion and management of electrical energy; the shell structure 100 can protect the main unit 200. Specifically, the shell structure 100 includes a first shell 110 and a second shell 120 detachably connected to the first shell 110. The detachable connection refers to a connection method that can be easily connected and disassembled, including but not limited to threaded connection, snap connection and pin connection; the first shell 110 is constructed with a first installation cavity 111 for installing the main unit 200; as shown Figure 4As shown, the first installation cavity 111 has a first opening 112 , and the main unit 200 is assembled in the first installation cavity 111 through the first opening 112 ; the second shell 120 is connected to the first shell 110 , thereby being able to close the first opening 112 .

[0044] In the prior art, the shell is a fully enclosed shell, so when assembled, the shell will block the main unit, resulting in a lack of a good field of view to observe the main unit, that is, the main unit is installed in a blind field of view, which in turn causes a greater risk of scratching between the main unit and the shell, making it more difficult to assemble the main unit to the shell. However, the shell structure 100 provided in the present application, when assembled, the main unit 200 can be installed in the first installation cavity 111 of the first shell 110 through the first opening 112 of the first shell 110, and then docked with the second shell 120. In other words, the shell structure 100 is a split structure. When assembling the main unit 200 and the shell structure 100, the staff can observe the main unit 200 through the first opening 112 of the first shell 110, and then the second shell 120 can avoid the main unit 200, without worrying about the problem of the second shell 120 and the main unit 200 scratching, thereby reducing the difficulty of assembling the main unit 200 in the shell structure 100.

[0045] like Figure 3 As shown, in one embodiment, along the installation direction of the main unit 200, the first portion 201 of the main unit 200 protrudes from the first installation cavity 111 via the first opening 112, as shown in FIG. Figure 3 As shown, the arrow Z indicates the installation direction of the main unit 200, and the installation direction is also the height direction of the main unit 200; Figure 2 As shown, the second shell 120 is covered on the first part 201 of the main unit 200. Figure 3 From the perspective of FIG, the first part of the main unit 200 is the upper half of the main unit 200, that is, the part exposed in the first installation cavity 111. Figure 3 As shown, since part of the main unit 200 protrudes from the first opening 112, the battery module 220, the power module 230 and the copper bus 210 in the main unit 200 can be exposed. Therefore, when assembling the second shell 120, the staff can notice the position of the main unit 200, which facilitates the second shell 120 to avoid the main unit 200; at the same time, when the main unit 200 needs to be replaced or repaired, the second shell 120 can be directly removed to expose the main unit 200, and then the exposed main unit 200 can be repaired without removing the entire main unit 200 from the first shell 110, which makes maintenance operations on the main unit 200 more convenient.

[0046] Specifically, if Figure 3As shown, along the installation direction (Z direction) of the main unit 200, the depth dimension of the first installation cavity 111 is smaller than the height dimension of the main unit 200, that is, the height dimension of the cavity wall of the first installation cavity 111 is smaller than the height dimension of the main unit 200. Therefore, when the main unit 200 is arranged in the first installation cavity 111, the first part 201 of the main unit 200 can protrude from the first installation cavity 111 through the first opening 112, so that when the second shell 120 is assembled, it is convenient to avoid the main unit 200.

[0047] In one embodiment, Figure 3 As shown, the main unit 200 includes a battery module 220. As mentioned above, the battery module 220 is responsible for storing and releasing electrical energy; Figure 4 As shown, the first installation cavity 111 includes a battery compartment 1112, and a positioning portion 113 for positioning the battery module 220 is provided in the battery compartment 1112. It can be understood that, as Figure 3 As shown, the main unit 200 also includes a power module 230, which is mainly responsible for the conversion and control of electric energy. The power module 230 usually includes power electronic devices, such as inverters, rectifiers, choppers, etc., for achieving efficient conversion and management of electric energy; Figure 4 As shown, correspondingly, the first installation cavity 111 also includes a power compartment 1111 for installing the power module 230. By planning the installation space within the first installation cavity 111, multiple components of the main unit 200 can be accurately installed in corresponding positions, thereby improving assembly efficiency.

[0048] like Figure 4 As shown, in one embodiment, the first shell 110 and the second shell 120 are respectively provided with a first butt joint end face 114 and a second butt joint end face 121, and the first butt joint end face 114 and the second butt joint end face 121 overlap. That is, the first butt joint end face 114 and the second butt joint end face 121 partially overlap, and fasteners such as bolts can be passed through the overlapping portion to enhance the stability of the connection. In other words, when the second shell 120 is assembled to the first shell 110, the second shell 120 does not need to extend into the first shell 110. In this way, the size of the first shell 110 can be designed according to the size of the main unit 200, for example Figure 3 As shown, the outer wall of the main unit 200 abuts against the inner wall of the first shell 110, so the first shell 110 can be set smaller, thereby making the entire energy storage device smaller. In addition, since the first shell 110 and the second shell 120 are overlapped, it is convenient to assemble and disassemble the second shell 120.

[0049] like Figure 4As shown, in one embodiment, the first mating end face 114 and the second mating end face 121 are both flat. In this way, the first shell 110 and the second shell 120 have a larger contact area, thereby ensuring that the strength of the connection part is enhanced and the connection stability of the first shell 110 and the second shell 120 is increased.

[0050] like Figure 2 As shown, in one embodiment, the shell structure 100 further includes a shell 130, and the shell 130 is covered on the first shell 110 and the second shell 120. It can be understood that the covering means that the shell 130 covers the outside of the first shell 110 and the second shell 120, wrapping the first shell 110 and the second shell 120 to form protection.

[0051] The first shell 110 and the second shell 120 may be made of metal materials such as aluminum, and the outer shell 130 may be made of plastic materials.

[0052] By arranging the outer shell 130 outside the first shell 110 and the second shell 120, the first shell 110 and the second shell 120 are further protected, so that the shell structure 100 has good corrosion resistance and impact resistance; at the same time, it can also effectively prevent leakage and improve the safety of the energy storage device 10.

[0053] like Figure 5 As shown, specifically, the housing 130 includes a third shell 140, and the third shell 140 is configured with a first mounting groove 141 having a second opening 142, as shown in FIG. Figure 6 As shown, at least one of the first housing 110 and the second housing 120 is connected to the groove wall of the first mounting groove 141. For example, in this embodiment, the second housing 120 is connected to the bottom wall of the first mounting groove 141, and the side surface of the second housing 120 abuts against the side wall of the first mounting groove 141, and the side surface of the first housing 110 abuts against the side wall of the first mounting groove 141. In this way, when the third housing 140 is covered over the second housing 120 and the first housing 110, the connection between the two is more tightly, reducing the possibility of the second housing 120 and the first housing 110 shaking inside the first mounting groove 141.

[0054] like Figure 6 As shown, in one embodiment, a slide rail 143 is provided on the third housing 140. Figure 7As shown, the first shell 110 is provided with a slide groove 115 for slidingly cooperating with the slide rail 143. In this way, during assembly, the third shell 140 can move along the slide groove 115 to cover the third shell 140 on the first shell 110 and the second shell 120, thereby improving assembly efficiency; and through the sliding cooperation between the second slide rail 143 and the second slide groove 115, the sliding friction area between the third shell 140 and the first shell 110 can be reduced, thereby reducing movement resistance and reducing assembly difficulty. Figure 6 In the perspective shown, the slide rail 143 and the slide groove 115 are respectively located on the top of the third housing 140 and the first housing 110. In other embodiments, the slide rail 143 can be provided on the first housing 110, and the slide groove 115 that cooperates with the slide rail 143 can be provided on the third housing 140.

[0055] Specifically, if Figure 6 As shown, the third housing 140 includes a first cover plate 144 and at least one first side plate 145. The first cover plate 144 is vertically connected to the first side plate 145, and the two first side plates 145 cooperate to enclose a first mounting slot 141. In this embodiment, there are two first side plates 145. The first cover plate 144 and the two first side plates 145 cooperate to form a U-shaped structure, which is mounted outside the first housing 110 and the second housing 120. The aforementioned slide rails 143 are provided on both first side plates 145. The slide rails 143 are located on the inner side of the first side plates 145. Correspondingly, the slide rails 143 are provided on both sides of the first housing 110.

[0056] like Figure 6 As shown, in one embodiment, the housing 130 further includes a fourth housing 150 detachably connected to the third housing 140, and the fourth housing 150 is capable of closing the second opening 142. The fourth housing 150 closes the second opening 142, thereby shielding the surface of the first housing 110 exposed relative to the second opening 142, further enhancing the waterproof and dustproof effects.

[0057] Specifically, if Figure 6 As shown, the fourth housing 150 includes a second cover plate 151 and at least one second side plate 152 detachably connected to the second cover plate 151. The second cover plate 151 and the second side plate 152 cooperate to close the second opening 142. In this embodiment, there are two second side plates 152, one connected to each side of the second cover plate 151. The third housing 140 has a U-shaped opening, and the second cover plate 151 and the two second side plates 152 cooperate to form a U-shaped structure, thereby closing the U-shaped opening.

[0058] like Figure 6As shown, in one embodiment, a first snap-fit ​​portion 1511 is provided on one side of the second cover plate 151, and a first snap-fit ​​groove 116 for cooperating with the first snap-fit ​​portion 1511 is correspondingly provided on the first housing 110. The first snap-fit ​​portion 1511 and the first snap-fit ​​groove 116 can serve as positioning elements, facilitating assembly of the second cover plate 151 to the first housing 110. In other embodiments, the positions of the first snap-fit ​​portion 1511 and the first snap-fit ​​groove 116 can be interchanged, that is, the first snap-fit ​​portion 1511 is located on the first housing 110, and the first snap-fit ​​groove 116 is located on the second cover plate 151. Furthermore, the second cover plate 151 and the first housing 110 can be fastened together using fasteners, such as screws, to enhance assembly.

[0059] like Figure 6 As shown, the other side of the second cover plate 151 is provided with a second clamping portion 1512, and the second side plate 152 is provided with a second clamping groove 1521 for cooperating with the second clamping portion 1512. The second clamping portion 1512 and the second clamping groove 1521 can also play the role of clamping and positioning, facilitating the rapid connection of the second cover plate 151 and the second side plate 152. It can be understood that the setting positions of the second clamping portion 1512 and the second clamping groove 1521 can be interchanged. Figure 6 One of the second side panels 152 is in the shape of a thin plate, and the other second side panel 152 is in the shape of a semi-enclosed cover structure, which is covered at one end of the first shell 110 and the second shell 120. In this way, when assembling the second side panel 152, the connection effect can be guaranteed without setting fasteners such as screws.

[0060] like Figure 6 As shown, in one embodiment, the main unit 200 also includes a heat dissipation module 240, which can be connected to the aforementioned power module 230, so as to be able to conduct the heat of the power module 230. The heat dissipation module 240 can specifically include a heat dissipation plate and a heat dissipation fan. Furthermore, a first heat dissipation slot 1513 is provided on the second cover plate 151, and the first heat dissipation slot 1513 faces the air inlet of the heat dissipation module 240, such as a heat dissipation fan; a second heat dissipation slot 1522 is provided on the second side plate 152, and the second heat dissipation slot 1522 faces the air outlet of the heat dissipation module 240, such as a heat dissipation fan. In this way, the heat dissipation effect of the power module 230 can be further improved through the circulation of the airflow.

[0061] like Figure 6As shown, in one embodiment, a plurality of ribs 146 are provided at intervals on the inner wall of the third housing 140 facing the second housing 120, i.e., the wall of the first mounting groove 141. The provision of the plurality of ribs 146 improves the rigidity, strength, and stability of the housing structure 100. Furthermore, the ribs 146 also act as a barrier between the second housing 120 and the third housing 140, thereby reducing contact wear between the second housing 120 and the third housing 140.

[0062] like Figure 2 As shown, further, an embodiment of the present application also provides an energy storage device 10, including a main unit 200 and the above shell structure 100. When assembling the main unit 200 and the shell structure 100, the main unit 200 can be installed in the first installation cavity 111 of the first shell 110 through the first opening 112 of the first shell 110, and then docked with the second shell 120. In other words, the shell structure 100 is a split structure. When assembling the main unit 200 and the shell structure 100, the staff can observe the main unit 200 through the first opening 112 of the first shell 110, and then the second shell 120 can avoid the main unit 200, thereby reducing the risk of the second shell 120 and the main unit 200 scratching. Compared with the operation of blindly installing the full-enclosed shell and the main unit in the prior art, the present application can observe the main unit 200 through the first opening 112, without worrying about the problem of the second shell 120 and the main unit 200 scratching, thereby reducing the difficulty of assembling the main unit 200 in the shell structure 100.

[0063] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above embodiments merely illustrate several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A housing structure, characterized in that: A main unit (200) applied to an energy storage device, wherein the housing structure comprises: A first housing (110) is configured with a first mounting cavity (111) for mounting the main body unit (200); the first mounting cavity (111) has a first opening (112); The second shell (120) is detachably connected to the first shell (110) and is capable of closing the first opening (112).

2. The housing structure according to claim 1, wherein: Along the installation direction of the main body unit (200), the first part of the main body unit (200) protrudes from the first installation cavity (111) via the first opening (112); The second shell (120) is covered on the first part of the main body unit (200).

3. The housing structure according to claim 2, wherein: Along the installation direction of the main body unit (200), the depth of the first installation cavity (111) is less than the height of the main body unit (200).

4. The housing structure according to claim 1, wherein: The main unit (200) includes a battery module (220), the first installation cavity (111) includes a battery compartment (1112), and a positioning portion (113) for positioning the battery module (220) is provided in the battery compartment (1112); and / or, The main unit (200) includes a power module (230), and the first installation cavity (111) includes a power compartment (1111) for installing the power module (230).

5. The housing structure according to claim 1, wherein: The first shell (110) and the second shell (120) are respectively provided with a first butt joint end surface (114) and a second butt joint end surface (121), and the first butt joint end surface (114) and the second butt joint end surface (121) are overlapped.

6. The housing structure according to claim 5, characterized in that: The first butt joint end surface (114) and the second butt joint end surface (121) are both planes.

7. The housing structure according to claim 1, wherein: The housing structure further comprises an outer shell (130), wherein the outer shell (130) is provided to cover the first housing (110) and the second housing (120).

8. The housing structure according to claim 7, characterized in that: The housing (130) includes a third shell (140), the third shell (140) is configured with a first mounting groove (141) having a second opening (142), and the first shell (110) and / or the second shell (120) are connected to a groove wall of the first mounting groove (141).

9. The housing structure according to claim 8, characterized in that: One of the third shell (140) and the first shell (110) is provided with a slide rail (143), and the other is provided with a slide groove (115) for slidingly cooperating with the slide rail (143).

10. The housing structure according to claim 8, characterized in that: The housing (130) further includes a fourth housing (150) detachably connected to the third housing (140), and the fourth housing (150) is capable of closing the second opening (142).

11. The housing structure according to claim 10, characterized in that: The third housing (140) comprises a first cover plate (144) and at least one first side plate (145), wherein the first cover plate (144) is vertically connected to the first side plate (145), and the two cooperate to enclose the first installation groove (141); The fourth shell (150) comprises a second cover plate (151) and at least one second side plate (152) detachably connected to the second cover plate (151), and the second cover plate (151) and the second side plate (152) cooperate to close the second opening (142).

12. The housing structure according to claim 11, characterized in that: One of the second cover plate (151) and the first shell (110) is provided with a first clamping portion (1511), and the other is provided with a first clamping groove (116) for cooperating with the first clamping portion (1511); and / or, One of the second cover plate (151) and the second side plate (152) is provided with a second clamping portion (1512), and the other is provided with a second clamping groove (1521) for cooperating with the second clamping portion (1512).

13. The housing structure according to claim 11, wherein: The main unit (200) comprises a heat dissipation module (240); a first heat dissipation slot (1513) is provided on the second cover plate (151); the first heat dissipation slot (1513) faces the air inlet of the heat dissipation module (240); A second heat dissipation slot (1522) is provided on the second side plate (152), and the second heat dissipation slot (1522) faces the air outlet of the heat dissipation module (240).

14. The housing structure according to claim 8, wherein: A plurality of ribs (146) are arranged at intervals on the inner wall of the third shell (140) facing the second shell (120).

15. An energy storage device, characterized in that: Comprising the housing structure (100) according to any one of claims 1 to 14.

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