Energy storage device

Abstract

The embodiment of the utility model provides an energy storage device, and relates to the field of energy storage. The energy storage device comprises a frame body and an elastic piece. The frame body is provided with a bearing surface used for placing the battery module. The elastic piece is opposite to the bearing surface, the elastic piece can be compressed in the direction away from the bearing surface under the jacking action of the battery module, and the compressed elastic piece can abut the battery module placed in place against the bearing surface through elastic force. According to the energy storage device, the battery module can be mounted stably while the battery module is more convenient to disassemble and assemble.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of energy storage, and specifically to an energy storage device. Background Art

[0002] With the continuous development of new energy technologies, energy storage devices are increasingly being used in power systems, mobile devices, and renewable energy systems. Traditional energy storage devices, such as energy storage cabinets and containers, typically require ample mounting space within the frame to accommodate multiple battery modules in order to store sufficient energy.

[0003] In existing energy storage devices, battery modules are usually placed on the load-bearing surface of a rack, and bolts, clips, pressure plates and other components are used to limit the translation and jumping of the battery modules on the load-bearing surface, thereby achieving fixed installation of the battery modules.

[0004] However, in existing energy storage devices, the installation of components that restrain the battery modules is complex, hindering their rapid assembly and disassembly. Furthermore, when transporting the energy storage device over long distances, the components that restrain the battery modules can become loose and fail to securely hold the modules in place, leading to damage from collisions and vibrations. Therefore, simplifying assembly and disassembly while ensuring secure installation has become a technical challenge. Utility Model Content

[0005] In view of the above-mentioned problems, an embodiment of the present application provides an energy storage device that is provided with an elastic member opposite to a supporting surface. The elastic member can rely on elastic force to press the battery module against the supporting surface. Its restraint is reliable and not easy to loosen, making the battery module installation more stable. The battery module will not bounce relative to the supporting surface during long-distance transportation, thereby reducing the risk of damage to the battery module. In addition, when installing the battery module, it is only necessary to push the battery module to lift the elastic member. When removing the battery module, it is only necessary to apply force to pull the battery module away from the supporting surface. The operation steps are simple and facilitate the quick disassembly and installation of the battery module.

[0006] One aspect of an embodiment of the present application provides an energy storage device comprising a frame and an elastic member. The frame has a support surface for mounting a battery module, and the elastic member faces the support surface. The elastic member can be compressed away from the support surface under the pressure of the battery module. The compressed elastic member can use its elastic force to press the mounted battery module against the support surface.

[0007] This energy storage device simplifies the process of removing and installing the battery module, facilitating quick and easy assembly and disassembly. Furthermore, the elastic member securely restrains the battery module, preventing it from loosening. This simplifies assembly and disassembly while ensuring a secure installation. Furthermore, the energy storage device boasts a simple structure and low cost.

[0008] In one optional embodiment, the elastic member includes an elastic bent plate, which includes a first protruding section. The first protruding section protrudes toward the supporting surface and can retract under the pressure of the battery module. The retracted first protruding section can press the placed battery module against the supporting surface.

[0009] In this manner, the first protruding section on the elastic bent plate can be easily squeezed by the battery module and elastically deformed, thereby promptly responding to the installation process of the battery module and retracting. The structure is simple and reliable and can ensure sufficient elastic force.

[0010] In one optional embodiment, the elastic bent plate includes a second raised section, which is convex toward the load-bearing surface. The first and second raised sections are connected, and the junction of the first and second raised sections is concave away from the load-bearing surface. Both the first and second raised sections are capable of retracting under the pressure of the battery module. After retraction, the first and second raised sections can press the placed battery module against the load-bearing surface.

[0011] In this manner, both the first raised section and the second raised section can provide elastic force for the battery module after the battery module is installed in place. The stronger elastic force can make the battery module more firmly pressed against the supporting surface, thereby making the battery module more firmly placed.

[0012] In an optional manner, the protrusion height of the second protrusion segment is smaller than the protrusion height of the first protrusion segment.

[0013] This method can reduce the material used for the elastic bent plate while improving the elastic force of the elastic bent plate after deformation, and can provide the elastic bent plate with sufficient retraction space to withstand the deformation of the first and second convex sections, thereby ensuring the elastic performance of the elastic bent plate.

[0014] In an optional manner, the bearing surface is a plane for the battery module to slide on. In the sliding direction when the battery module is installed, the first protruding section is located before the second protruding section.

[0015] In this method, when the battery module is placed, it first presses against the first raised section, which has a higher protrusion height. Even if the first raised section does not have enough space to retract, the second raised section can compensate for it, ensuring the smooth retraction of the first raised section. Furthermore, the first raised section retracts first, followed by the second raised section, allowing the battery module to slide smoothly into place without any obstruction, making assembly and disassembly of the battery module smoother.

[0016] In an optional manner, a minimum retractable distance of the junction of the first protruding segment and the second protruding segment in a direction away from the bearing surface is greater than a maximum retractable distance of the first protruding segment and the second protruding segment under the top pressure of the battery module.

[0017] This approach can provide a sufficiently spacious retraction space between the first protruding section and the second protruding section and the mounting surface, thereby ensuring that the first protruding section and the second protruding section can be smoothly retracted when the battery module is installed.

[0018] In an optional manner, the bearing surface is a plane for sliding of the battery module, and there are multiple elastic members, which are arranged at intervals along the sliding direction when the battery module is installed.

[0019] In this method, multiple elastic members can apply elastic force to the battery module at multiple positions, pressing the battery module against the supporting surface from multiple points, thereby improving the restraint effect on the battery module. The setting method is flexible and can make the battery module more firmly placed.

[0020] In one optional embodiment, the battery module is provided with multiple pressing portions corresponding to the respective elastic members, with the pressing surface of each pressing portion being configured to contact the respective elastic member. In the sliding direction during battery module installation, the height of each elastic member relative to the support surface decreases one by one, and the height of each pressing surface relative to the bottom surface of the battery module also decreases one by one, so that the bottom surface of the battery module contacts the support surface.

[0021] In this method, multiple elastic parts and multiple pressing parts are arranged in a stepped manner, which can ensure a one-to-one matching relationship between each elastic part and each pressing part, avoid front and rear interference when the battery module is pushed in for installation, resulting in the battery module being unable to be placed in place, and make the battery module push-in installation smoother.

[0022] In one optional embodiment, the frame includes a first joist and a second joist, the first joist and the second joist being disposed opposite each other. A first bottom plate is disposed on the first joist, and a second bottom plate is disposed on the second joist. The first bottom plate and the second bottom plate are coplanar to form a bearing surface.

[0023] In this method, the first bottom plate of the first support beam and the second bottom plate of the second support beam together form a bearing surface for the battery module. The method has a simple structure, a strong bearing capacity, is easy to process, and has a low cost.

[0024] In an optional manner, a first side plate is provided on the first joist, a second side plate is provided on the second joist, and elastic members are provided on the first side plate and / or the second side plate.

[0025] In this manner, elastic members can be provided on both the first side plate of the first joist and the second side plate of the second joist, which can further simplify the overall structure, make the overall structure easier to position, process and assemble, and further save costs.

[0026] The battery module provided in the embodiment of the present application is provided with an elastic member opposite to the bearing surface, and the elastic member can be compressed in a direction away from the bearing surface under the top pressure of the battery module. The compressed elastic member can rely on the elastic force to press the battery module against the bearing surface. Its constraint is reliable and not easy to loosen, making the battery module more securely installed. The battery module will not jump relative to the bearing surface during long-distance transportation, etc., reducing the risk of damage to the battery module. In addition, when installing the battery module, it is only necessary to push the battery module to lift the elastic member. When disassembling the battery module, it is only necessary to apply force to pull the battery module away from the bearing surface, which facilitates the rapid disassembly and assembly of the battery module. In addition, the elastic member can eliminate certain manufacturing and assembly tolerances, and can play a certain buffering role when the battery module vibrates, further enhancing the stability of the battery module installation. In addition, the elastic member has a simple structure and low cost.

[0027] The above description is only an overview of the technical solutions of the embodiments of this application. In order to more clearly understand the technical means of the embodiments of this application, you can implement them according to the contents of the description. In order to make the above and other purposes, features and advantages of the embodiments of this application more obvious and easy to understand, the following specifically describes the specific implementation methods of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 This is an exploded schematic diagram of some parts of the energy storage device provided in an embodiment of the present application.

[0030] Figure 2 This is a cross-sectional view of a battery module mounted on a frame of an energy storage device according to an embodiment of the present application.

[0031] Figure 3 This is a partial schematic diagram of the elastic member of the energy storage device involved in the embodiment of the present application contacting the battery module.

[0032] Figure 4 This is a partial schematic diagram of the energy storage device according to the embodiment of the present application when the elastic member does not interfere with the battery module.

[0033] Figure 5 Schematic diagram of the structure of the elastic member of the energy storage device involved in the embodiment of the present application.

[0034] Figure 6 This is a schematic structural diagram of the battery module involved in the embodiment of the present application.

[0035] Reference numerals:

[0036] 11. Load-bearing surface; 12. First joist; 121. First bottom plate; 122. First side plate; 13. Second joist; 131. Second bottom plate; 132. Second side plate;

[0037] 20. Elastic member; 21. Elastic bent plate; 211. First raised section; 212. Second raised section; 22. Mounting base;

[0038] 40. Battery module; 41. Top pressure portion. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0041] The terms "comprises", "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the presence of a plurality.

[0042] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0043] The term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0044] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the energy storage device of the present application. For example, in the description of the present application, the directions or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present application.

[0045] In addition, the expressions of the indicated directions, such as the X direction, the Y direction, and the Z direction, used to illustrate the operation and construction of the various components of the energy storage device of this embodiment are not absolute but relative, and although these indications are appropriate when the various components of the energy storage device are in the positions shown in the figures, when these positions are changed, these directions should be interpreted differently to correspond to the changes.

[0046] In addition, the terms "first", "second", etc. in the description and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more such features.

[0047] In the description of this application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two (including two).

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, "connected" or "connected" in a mechanical structure can refer to a physical connection. For example, a physical connection can be a fixed connection, such as a fixed connection via a fixing member, such as a screw, bolt, or other fixing member. A physical connection can also be a detachable connection, such as a mutual snap-fit ​​connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. In addition to referring to a physical connection, "connected" or "connected" in a circuit structure can also refer to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is interconnected. It can also refer to internal communication between two elements. A signal connection can refer to a signal connection through a circuit or a signal connection through a media medium, such as radio waves. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0049] The energy storage device provided in this application may be an energy storage cabinet, an energy storage container, etc., in which at least one battery module may be placed. The battery module may be a battery pack, a battery cell, or other energy storage structure. Figure 1 、 Figure 2 and Figure 3 As shown, Figure 1 This is an exploded schematic diagram of some parts of the energy storage device provided in an embodiment of the present application. Figure 2 This is a cross-sectional view of a battery module placed on the frame of the energy storage device according to an embodiment of the present application. Figure 3 FIG2 is a partial schematic diagram of an energy storage device according to an embodiment of the present application, wherein the elastic member 20 of the energy storage device is in contact with a battery module.

[0050] The frame is a framework structure for housing the battery modules 40. It is made of high-strength materials, such as aluminum alloy or stainless steel, to ensure sufficient structural strength and corrosion resistance. Support structures such as support plates, support columns, first joists 12, and second joists 13 can be installed on the frame to support the battery modules 40.

[0051] The frame has a support surface 11 for placing the battery module 40. To place the battery module 40, simply place the bottom of the battery module 40 on the support surface 11, so that the support surface 11 supports the battery module 40. The support surface 11 can be set as a surface of a support plate or a surface of a support beam.

[0052] The bearing surface 11 can be a single continuous plane or a combination of multiple planes. When the bearing surface 11 is composed of multiple planes, the bearing surface 11 is equivalent to a general term for these planes, and these planes can be coplanar or non-coplanar, and no specific limitation is made here.

[0053] For example, an optional method is as follows Figure 1 As shown, the frame includes a first joist 12 and a second joist 13, which are arranged opposite each other. A first bottom plate 121 is disposed on the first joist 12, and a second bottom plate 131 is disposed on the second joist 13. The surface of the first bottom plate 121 and the surface of the second bottom plate 131 are coplanar, forming a bearing surface 11.

[0054] In this embodiment, the first bottom plate 121 of the first support beam 12 and the second bottom plate 131 of the second support beam 13 together form the bearing surface 11 for bearing the battery module 40 . The structure is simple, the bearing capacity is strong, and the processing is easy and the cost is low.

[0055] An elastic member 20 is provided on the frame, and the elastic member 20 is opposite to the supporting surface 11. The elastic member 20 can be compressed in a direction away from the supporting surface 11 under the top pressure of the battery module 40. The compressed elastic member 20 can press the placed battery module 40 against the supporting surface 11 through elastic force.

[0056] Furthermore, the elastic member 20 may also be provided on the first joist 12 and the second joist 13. An optional method is as follows Figure 1 As shown, a first side plate 122 is provided on the first joist 12 , a second side plate 132 is provided on the second joist 13 , and an elastic member 20 is provided on the first side plate 122 and / or the second side plate 132 .

[0057] In this manner, the first side plate 122 of the first joist 12 and the second side plate 132 of the second joist 13 can both be provided with elastic members 20 , which can further simplify the overall structure, making it easier to position, process and assemble the overall structure, and further saving costs.

[0058] When no external force is applied to the elastic member 20, the minimum distance between the elastic member 20 and the supporting surface 11 is less than the distance between the bottom surface of the battery module 40 and the top pressure surface of the battery module 40, where the top pressure surface is the surface that contacts the elastic member 20. In other words, the positional relationship between the elastic member 20 and the supporting surface 11 ensures that the elastic member 20 is lifted up when the battery module 40 is placed, and the elastic force of the deformed elastic member 20 can firmly press the battery module 40 against the supporting surface 11.

[0059] When installing the battery module 40, the battery module 40 will move toward the target placement position under the action of an external force. The battery module 40 will pass through the space between the elastic member 20 and the support surface 11. The battery module 40 will press against the elastic member 20, causing the elastic member 20 to be compressed away from the support surface 11 under the pressure of the battery module 40. When the battery module 40 reaches the target placement position, the battery module 40 is placed in place, the battery module 40 is located between the elastic member 20 and the support surface 11, and the elastic member 20 is in a compressed state. The compressed elastic member 20 will press against the pressing surface, thereby applying pressure to the battery module 40 and pressing the battery module 40 against the support surface 11. The target placement position is the position where the battery module 40 is placed.

[0060] The elastic member 20 can be specifically fixed to the bracket by welding, riveting or thread locking, and the elastic member 20 is fixed in place after the energy storage device is manufactured. In the process of placing the battery module 40, there is no need to disassemble the elastic member 20. It is only necessary to place the battery module 40 into the space between the elastic member 20 and the bearing surface 11 through simple actions such as pushing, and make the battery module 40 reach the target placement position. When disassembling the battery module 40, it is only necessary to apply force to pull the battery module 40 away from the target placement position, thereby removing the battery module 40 from the space between the elastic member 20 and the bearing surface 11, without performing unnecessary operations on the elastic member 20. Therefore, when disassembling and assembling the battery module 40, the energy storage device has simple operating steps, which facilitates the rapid disassembly and assembly of the battery module 40.

[0061] The battery module 40 placed in place will always be constrained by the elastic force of the elastic part 20. Even if the energy storage device is bumped and vibrated during long-distance transportation, the elastic deformation of the elastic part 20 will never be eliminated, thereby maintaining a reliable constraint effect and preventing looseness. The battery module 40 can always fit in contact with the supporting surface 11 without jumping, reducing the risk of damage to the battery module 40.

[0062] Furthermore, when the energy storage device is subjected to bumps and vibrations, the elastic member 20 itself cushions them, further enhancing the stability of the battery module 40. The elastic member 20 also eliminates manufacturing and assembly tolerances in the relative directions between the elastic member 20 and the support surface 11, ensuring a more secure installation of the elastic member 20. Furthermore, the elastic member 20 has a simple structure, is easy to manufacture and replace, and is relatively inexpensive.

[0063] In this embodiment, the elastic member 20 can have various specific structural forms. For example, the elastic member 20 can be configured as a spring, a spring sheet, an elastic plate, or other structural forms, without limitation. When the elastic member 20 is configured in various structural forms, the structure of the elastic member 20 should ensure that the elastic member 20 is easily lifted by the battery module 40 and that the elastic member 20, after elastic deformation, can provide a reliable elastic force to the battery module 40.

[0064] An alternative method is Figure 3 、 Figure 4 and Figure 5 As shown, Figure 4 This is a partial schematic diagram of the energy storage device according to the embodiment of the present application when the elastic member does not interfere with the battery module. Figure 5 The following is a schematic diagram of the structure of the elastic member of the energy storage device involved in an embodiment of the present application. The elastic member 20 includes an elastic curved plate 21, which includes a first raised section 211. The first raised section 211 protrudes toward the support surface 11 and can retract under the pressure of the battery module 40. The retracted first raised section 211 can press the installed battery module 40 against the support surface 11.

[0065] The elastic bent plate 21 can be fixed on the frame by welding, riveting or screw locking. Figure 3 、 Figure 4 and Figure 5 As shown, the elastic member 20 also includes a mounting base 22, which is fixed on the frame. The mounting surface of the mounting base 22 is opposite to the bearing surface 11, and the elastic bent plate 21 is fixedly connected to the mounting surface of the mounting base 22, so that the elastic bent plate 21 is opposite to the bearing surface 11.

[0066] The first raised section 211 is a partially bent structure within the elastic curved plate 21. When the battery module 40 is installed in the frame, the first raised section 211 is squeezed by the battery module 40, thereby retracting under the pressure of the battery module 40. The bending path of the first raised section 211 can be a convex shape such as an arc, with its convex direction facing the support surface 11.

[0067] A clearance space is defined between the first protruding section 211 of the elastic curved plate 21 and the mounting surface to which the elastic curved plate 21 is fixed. This clearance space provides retraction space for the first protruding section 211. When the first protruding section 211 retracts under the pressure of the battery module 40, it retracts into the retraction space and generates a restoring force. This restoring force acts on the battery module 40, pressing it against the support surface 11, thereby preventing the battery module 40 from moving away from the support surface 11.

[0068] In this manner, the first protruding section 211 on the elastic bent plate 21 can be easily squeezed by the battery module 40 and elastically deformed, thereby promptly responding to the installation process of the battery module 40 and retracting. The structure is simple and reliable and can ensure sufficient elastic force.

[0069] In order to further improve the elastic performance of the elastic bent plate 21, more convex sections can be provided. Figure 3 、 Figure 4 and Figure 5As shown, in an optional embodiment, the elastic bent plate 21 includes a second raised section 212, which is convex toward the support surface 11. The first raised section 211 and the second raised section 212 are connected, and the junction of the first raised section 211 and the second raised section 212 is concave away from the support surface 11. Both the first raised section 211 and the second raised section 212 can retract under the pressure of the battery module 40. After retraction, the first raised section 211 and the second raised section 212 can press the battery module 40 into place against the support surface 11.

[0070] Among them, the second raised section 212 and the first raised section 211 are two connected raised structures, so that the first raised section 211 and the second raised section 212 form a wavy raised structure, and there is also a retraction space between the second raised section 212 and the mounting surface of the fixed elastic bent plate 21, so that the first raised section 211 and the second raised section 212 can both retract smoothly.

[0071] When the elastic bent plate 21 is not subjected to external force, the minimum distance between the first protruding section 211 and the bearing surface 11, as well as the minimum distance between the second protruding section 212 and the bearing surface 11, are both smaller than the distance between the bottom surface of the cell module and the top pressure surface of the battery module 40, so that the first protruding section 211 and the second protruding section 212 can both produce elastic deformation during the installation process of the battery module 40, thereby pressing the battery module 40 against the bearing surface 11.

[0072] In this manner, both the first protruding section 211 and the second protruding section 212 can provide elastic force for the battery module 40 after the battery module 40 is installed in place. The stronger elastic force can make the battery module 40 more firmly pressed against the supporting surface 11, thereby making the battery module 40 more firmly placed.

[0073] In order to ensure that both the first convex section 211 and the second convex section 212 can be smoothly retracted, sufficient retraction space must be reserved for the first convex section 211 and the second convex section 212. Figure 5 As shown, the minimum retractable distance of the junction of the first protruding section 211 and the second protruding section 212 in the direction away from the bearing surface 11 is Figure 5 The marked distance value a is greater than the maximum retraction distance of the first protruding segment 211 and the second protruding segment 212 under the top pressure of the battery module 40 .

[0074] That is to say, the minimum distance a between the junction of the first protrusion segment 211 and the second protrusion segment 212 relative to the installation surface is greater than the maximum retraction distance of the first protrusion segment 211 and the second protrusion segment 212 under the top pressure of the battery module 40, so that there is a sufficiently spacious retraction space between the first protrusion segment 211 and the second protrusion segment 212 and the installation surface, thereby ensuring that the first protrusion segment 211 and the second protrusion segment 212 can retract smoothly when the battery module 40 is installed.

[0075] When the first convex section 211 and the second convex section 212 are provided at the same time, the convex heights of the first convex section 211 and the second convex section 212 can be the same or different. Figure 5 As shown, the protrusion height c of the second protrusion segment 212 is smaller than the protrusion height b of the first protrusion segment 211 .

[0076] The raised heights b and c of the first and second raised sections 211, 212 are the raised heights of the first and second raised sections 211, 212 relative to the mounting surface of the fixed elastic curved plate 21. The raised height c of the second raised section 212 is less than the raised height b of the first raised section 211, which reduces the material used in the elastic curved plate 21 while increasing the elastic force exerted by the deformed elastic curved plate 21. Furthermore, when the battery module 40 is installed, the elastic deformation of the second raised section 212 is less than that of the first raised section 211, providing the elastic curved plate 21 with sufficient retraction space to accommodate the deformation of the first and second raised sections 211, thereby ensuring the elastic performance of the elastic curved plate 21.

[0077] If the first raised section 211 and the second raised section 212 have different raised heights, the battery module 40 can be placed so that it presses against the first raised section 211 first to ensure smooth installation of the battery module 40. For example, in one optional embodiment, the support surface 11 is a flat surface for the battery module 40 to slide on. In the sliding direction of the battery module 40 during installation, the first raised section 211 is located before the second raised section 212.

[0078] In this method, the battery module 40 is placed by sliding. When the battery module 40 slides toward the target installation position, it first presses against the first raised section 211, which has a higher protrusion height, causing the first raised section 211 to retract first. Even if the retraction space of the first raised section 211 is insufficient, the retraction space of the second raised section 212 can compensate, thereby ensuring the smooth retraction of the first raised section 211. Furthermore, the first raised section 211 retracts first, followed by the second raised section 212, allowing the battery module 40 to slide smoothly into place without any obstruction, thereby making the assembly and disassembly of the battery module 40 smoother.

[0079] In addition, in this embodiment, there can be multiple elastic members 20 to provide constraints for the battery module 40 at multiple locations. Figure 1 and Figure 2 As shown, the supporting surface 11 is a plane for the battery module 40 to slide, and there are multiple elastic members 20 , which are arranged at intervals along the sliding direction of the battery module 40 when it is installed.

[0080] The multiple elastic members 20 can be evenly spaced at the same intervals or spaced at different intervals. Each elastic member 20 can be placed at a position where the battery module 40 will be displaced more when vibrating to offset the impact of vibration on the battery module 40 and improve the restraint effect.

[0081] In this method, multiple elastic members 20 can apply elastic force to the battery module 40 placed in place at multiple positions, pressing the battery module 40 against the supporting surface 11 from multiple points, thereby improving the restraint effect on the battery module 40. The setting method is flexible and can make the battery module 40 placed more firmly.

[0082] When multiple elastic members 20 are provided, each elastic member 20 will contact the battery module 40 at a different position, so multiple top pressure surfaces need to be provided accordingly. Figure 1 、 Figure 2 and Figure 6 As shown, Figure 6 This is a schematic structural diagram of the battery module involved in the embodiment of the present application.

[0083] The battery module 40 is provided with a plurality of pressing portions 41 corresponding to the elastic members 20. The pressing surface of each pressing portion 41 is configured to contact the elastic member 20. In the sliding direction during installation of the battery module 40, the height of each elastic member 20 relative to the support surface 11 decreases one by one, and the height of the pressing surface of each pressing portion 41 relative to the bottom surface of the battery module 40 also decreases one by one. The bottom surface of the battery module 40 is configured to contact the support surface 11.

[0084] The pressing portion 41 may be a stopper for pressing the elastic member 20, and the corners of the stopper may be rounded to allow the stopper to smoothly push the elastic member 20 away when the battery module 40 is pushed in and installed, thereby ensuring a smooth insertion and installation of the battery module 40. Of course, the pressing portion 41 may also be a step, protrusion, or other structure for pressing the elastic member 20, and this is not limited here.

[0085] In this arrangement, the elastic members 20 and the pressing surfaces are arranged in a stepped pattern in the sliding direction of the battery module 40 during installation. For example, in one embodiment, there are three elastic members 20, each comprising the same elastic bent plate 21. Each elastic member 20 is secured to a different mounting base 22. In the sliding direction of the battery module 40 during installation, the heights of the mounting bases 22 relative to the support surface 11 are, respectively, 80 mm, 75 mm, and 70 mm.

[0086] In this manner, multiple elastic members 20 and multiple pressing portions 41 are arranged in a stepped manner, which can ensure a one-to-one matching relationship between each elastic member 20 and each pressing portion 41, and can avoid front-to-back interference when the battery module 40 is pushed in for installation, resulting in the battery module 40 being unable to be placed in place, making the battery module 40 push-in installation smoother.

[0087] In summary, the battery module described above is provided with an elastic member opposite to the bearing surface, and the elastic member can be compressed in a direction away from the bearing surface under the top pressure of the battery module. The compressed elastic member can rely on the elastic force to press the battery module against the bearing surface. Its constraint is reliable and not easy to loosen, making the battery module more securely installed. The battery module will not jump relative to the bearing surface during long-distance transportation, etc., reducing the risk of damage to the battery module. In addition, when installing the battery module, it is only necessary to push the battery module to lift the elastic member. When disassembling the battery module, it is only necessary to apply force to pull the battery module away from the bearing surface, which facilitates the rapid disassembly and assembly of the battery module. In addition, the elastic member can eliminate certain manufacturing and assembly tolerances, and can play a certain buffering role when the battery module vibrates, further enhancing the stability of the battery module installation. In addition, the elastic member has a simple structure and low cost.

[0088] Those skilled in the art will appreciate that, although some embodiments herein do not include certain features included in other embodiments, combinations of features from different embodiments are still within the scope of this application and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0089] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An energy storage device, characterized in that: The energy storage device comprises: a frame and an elastic member; The frame has a bearing surface for placing the battery module; The elastic member is opposite to the supporting surface. The elastic member can be compressed in a direction away from the supporting surface under the top pressure of the battery module. The compressed elastic member can press the placed battery module against the supporting surface through elastic force.

2. The energy storage device according to claim 1, characterized in that The elastic member includes an elastic bent plate, and the elastic bent plate includes a first convex section; The first protruding section protrudes toward the supporting surface. The first protruding section can retract under the top pressure of the battery module. After retracting, the first protruding section can press the battery module in place against the supporting surface.

3. The energy storage device according to claim 2, characterized in that The elastic bent plate includes a second convex section, the second convex section convex toward the bearing surface; the first convex section and the second convex section are connected, and the connection between the first convex section and the second convex section is concave in a direction away from the bearing surface; The first convex section and the second convex section can both retract under the top pressure of the battery module. After retracting, the first convex section and the second convex section can press the battery module in place against the supporting surface.

4. The energy storage device according to claim 3, characterized in that A protrusion height of the second protrusion segment is smaller than a protrusion height of the first protrusion segment.

5. The energy storage device according to claim 4, characterized in that The bearing surface is a plane for the battery module to slide; in the sliding direction when the battery module is installed, the first protruding section is located in front of the second protruding section.

6. The energy storage device according to claim 3, characterized in that A minimum retractable distance of a junction of the first protruding segment and the second protruding segment in a direction away from the bearing surface is greater than a maximum retractable distance of the first protruding segment and the second protruding segment under the top pressure of the battery module.

7. The energy storage device according to claim 1, characterized in that The bearing surface is a plane for the battery module to slide; there are multiple elastic members, and the elastic members are arranged at intervals along the sliding direction when the battery module is installed.

8. The energy storage device according to claim 7, characterized in that The battery module is provided with a plurality of pressing portions corresponding to the elastic members, and a pressing surface of each pressing portion is used to contact with each elastic member; In the sliding direction when the battery module is installed, the height of each elastic member relative to the supporting surface is gradually reduced, and the height of the top pressing surface of each top pressing portion relative to the bottom surface of the battery module is also gradually reduced. The bottom surface of the battery module is used to contact the supporting surface.

9. The energy storage device according to claim 1, characterized in that The frame includes a first joist and a second joist, wherein the first joist and the second joist are arranged opposite to each other; A first bottom plate is provided on the first joist, and a second bottom plate is provided on the second joist; the plate surface of the first bottom plate and the plate surface of the second bottom plate are coplanar to jointly constitute the bearing surface.

10. The energy storage device according to claim 9, characterized in that: A first side plate is provided on the first joist, a second side plate is provided on the second joist, and the elastic member is provided on the first side plate and / or the second side plate.

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