Energy storage device

Abstract

The present application relates to the technical field of energy storage batteries, and in particular to an energy storage device. The energy storage device includes a first module, a second module and a first connector, the first module is configured to be spaced apart from an external device along a first direction; the second module includes a plurality of battery cells, the second module and the first module are stacked along a third direction, and the first direction is perpendicular to the third direction; the first connector includes a first connecting portion, a first extending portion, a second extending portion and a first fixing portion, the first connecting portion is fixed to the first module, and the first fixing portion is configured to be fixedly connected to an external device; the first extending portion is connected to the first connecting portion, and along the third direction, the first extending portion exceeds the first module; the second extending portion connects the first fixing portion and the first extending portion, along the third direction, the first fixing portion exceeds the first extending portion, and along the first direction, the first extending portion exceeds the first fixing portion. Through the above-mentioned method, it is convenient to install the first module and the first connector, and the convenience of installing the energy storage device is improved.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage batteries, and in particular to an energy storage device. Background Art

[0002] As carbon peak and carbon neutrality become global consensus, the proportion of new energy in the entire energy system will increase rapidly, and energy storage is expected to usher in explosive growth. Household energy storage equipment is mainly used in large-scale off-grid power generation and energy storage of renewable energy in the low-voltage range, user-side grid-connected peak-shaving and valley-filling, residential photovoltaic energy storage, small industrial and commercial emergency standby, and grid-side power generation and sales systems.

[0003] Energy storage equipment includes energy storage batteries. Since the capacity and voltage of energy storage equipment are highly required, energy storage equipment usually includes multiple energy storage batteries. Energy storage batteries are usually stacked up and down and installed close to the wall to reduce the area of ​​the ground occupied by the energy storage batteries. Each energy storage battery is also connected to the wall to enhance the stability of the stacked installation of the energy storage batteries. How to conveniently install energy storage batteries is a problem that needs further improvement. Utility Model Content

[0004] The embodiments of the present application aim to provide an energy storage device to at least improve the convenience of installing the energy storage device.

[0005] In order to solve the above technical problems, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides an energy storage device, the energy storage device comprising a first module, a second module and a first connector, the first module being configured to be spaced apart from an external device along a first direction; the second module comprising a plurality of battery cells, the second module and the first module being stacked along a third direction, the first direction being perpendicular to the third direction; the first connector comprising a first connecting portion, a first extending portion, a second extending portion and a first fixing portion, the first connecting portion being fixed to the first module, the first fixing portion being configured to be fixedly connected to the external device; the first extending portion being connected to the first connecting portion, and the first extending portion extending beyond the first module along the third direction; the second extending portion connecting the first fixing portion and the first extending portion, the first fixing portion extending beyond the first extending portion along the third direction, and the first extending portion extending beyond the first fixing portion along the first direction.

[0007] In one or more / any one of the above optional embodiments, along the first direction, the first connecting portion is arranged on a side of the first module close to the external device.

[0008] In one or more / any one of the above optional embodiments, the first fixing portion is configured to be fixedly connected to the wall, the first module is arranged on the ground, and the first extending portion is configured to avoid the protruding portion of the wall.

[0009] In one or more / any one of the above optional embodiments, there is an angle A between the first extension portion and the second extension portion, and 90°<=A<180°.

[0010] In one or more / any one of the above optional embodiments, the energy storage device includes a third module, and the second module and the third module are stacked along the third direction; the energy storage device includes a second connecting member, the second connecting member includes a second connecting portion, a third extending portion, a fourth extending portion and a second fixed portion, the second connecting portion is fixed to the second module, and the second fixed portion is configured to be fixedly connected to the external device; the third extending portion is connected to the second connecting portion, and along the third direction, the third extending portion exceeds the second module; the fourth extending portion connects the second fixed portion and the third extending portion, along the third direction, the second fixed portion exceeds the third extending portion, and along the first direction, the third extending portion exceeds the second fixed portion.

[0011] In one or more / any one of the above optional embodiments, the third extending portion includes a convex portion, and the convex portion is configured to abut against the third module along the first direction.

[0012] In one or more / any one of the above optional embodiments, the second connecting portion is provided with a plurality of second holes, and the plurality of second holes are arranged at intervals along a second direction; the energy storage device includes a second fastener, and the second fastener is detachably connected to the second module through one of the second holes; wherein the second direction is perpendicular to the first direction and the third direction.

[0013] In one or more / any one of the above optional embodiments, the second fixing portion is provided with a third hole, and the third hole extends along the third direction; the energy storage device includes a third fastener, and the third fastener passes through the third hole and is detachably connected to the external device.

[0014] In one or more / any one of the above optional embodiments, there is an angle B between the third extension portion and the fourth extension portion, 90° <B<180°。

[0015] In one or more / any one of the above optional embodiments, the energy storage device includes a plurality of support members, and the plurality of support members are spaced apart on a side of the first module away from the second module; wherein the support members are connected to the first module, and the support members are configured to adjust the length extending from the first module along the third direction.

[0016] In the energy storage device involved in the embodiment of the present application, the first connecting member fixes the first module to the external device, thereby improving the problem that the first module and the second module may shake or tip over; along the first direction, the first fixing portion of the first connecting member exceeds the first extending portion, and along the third direction, the first extending portion exceeds the first module, and the first fixing portion exceeds the first extending portion, so that the first module and the external device are spaced apart along the first direction, which is beneficial to the heat dissipation of the first module and facilitates the installation of the first module; the first extending portion and the first connecting portion can avoid the raised portion on the external device facing the first module, thereby facilitating the connection between the first connecting member and the external device and improving the convenience of installation of the energy storage device.

[0017] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0019] Figure 1 It is a partial structural exploded view of the energy storage device of an embodiment of the present application;

[0020] Figure 2 is a cross-sectional view of the energy storage device after installation in an embodiment of the present application;

[0021] Figure 3 yes Figure 1 A schematic structural diagram of the first connecting member;

[0022] Figure 4 yes Figure 1 A schematic structural diagram of the second connecting member;

[0023] Figure 5 It is a partial structural exploded view of the energy storage device according to an embodiment of the present application.

[0024] The reference numerals in the specific implementation manner are as follows:

[0025] 100. Energy storage equipment;

[0026] 1. The first module;

[0027] 2. Second module; 21. Battery cell;

[0028] 3. first connecting member; 31. first connecting portion; 32. first extending portion; 33. second extending portion; 34. first fixing portion; 341. first hole;

[0029] 4. First fastener;

[0030] 5. second connecting member; 51. second connecting portion; 511. second hole; 52. third extending portion; 521. convex portion; 53. fourth extending portion; 54. second fixing portion; 541. third hole;

[0031] 6. Second fastener;

[0032] 7. The third fastener;

[0033] 8. The third module;

[0034] 9. Supporting parts;

[0035] 200, external equipment;

[0036] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0037] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians 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" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0040] In the description of the embodiments of the present application, the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meanings and therefore cannot be understood as limiting the scope of protection of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0041] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0042] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0043] An embodiment of the present application provides an energy storage device 100, which is used to supply power. The energy storage device 100 may include a primary battery or a secondary battery, for example, may include one or more of a lithium-ion battery, a lithium-ion polymer battery, a lithium iron phosphate battery, a lead-acid battery, and a nickel-cadmium battery.

[0044] In some embodiments, Figure 1 As shown, the energy storage device 100 includes a first module 1, a second module 2 and a first connector 3, the first module 1 and the second module 2 are stacked, the first connector 3 is fixed to the first module 1, and the first connector 3 is configured to be fixedly connected to the external device 200 along the first direction X. The first connector 3 is fixedly connected to the first module 1 and the external device 200, and the first module 1 is fixed to the external device 200, thereby improving the problem that the first module 1 and the second module 2 may shake or tip over. Optionally, the first module 1 and the second module 2 can both be roughly rectangular, so as to facilitate the stacking between the first module 1 and the second module 2.

[0045] The external device 200 may be a wall, a machine housing, or a machine frame, etc., and only needs to be fixedly connected to the first connecting member 3. For the convenience of description, the stacking direction of the first module 1 and the second module 2 is taken as the third direction Z, and the third direction Z is the vertical direction. The first direction X is perpendicular to the third direction Z.

[0046] In some embodiments, Figure 1 As shown, the second module 2 includes a plurality of battery cells 21, and the battery cells 21 are used for power supply. The second module 2 is a battery module, and the second module 2 is used for power supply. Among them, the battery cells 21 are rectangular plates, but the shape and arrangement direction of the battery cells 21 in the embodiment of the present application are not limited thereto. In some embodiments, the first module 1 includes a plurality of battery cells 21.

[0047] In some embodiments, Figure 2 and Figure 3 As shown, the first connecting member 3 includes a first connecting portion 31, a first extending portion 32, a second extending portion 33 and a first fixing portion 34. The first connecting portion 31 is fixed to the first module 1, and the first fixing portion 34 is configured to be fixedly connected to the external device 200; the first extending portion 32 is connected to the first connecting portion 31. The second extending portion 33 connects the first fixing portion 34 and the first extending portion 32. In the above manner, the first connecting member 3 fixes the first module 1 to the external device 200. Optionally, the first connecting portion 31, the first extending portion 32, the second extending portion 33 and the first fixing portion 34 are all in the form of thin sheets, and the first connecting portion 31, the first extending portion 32, the second extending portion 33 and the first fixing portion 34 are formed by bending the thin sheet-shaped first connecting member 3. Optionally, the first connecting member 3 is made of metal.

[0048] In some embodiments, Figure 2 and Figure 3 As shown, along the first direction X, the first extension portion 32 exceeds the first fixing portion 34, and along the third direction Z, the first extension portion 32 exceeds the first module 1, and the first fixing portion 34 exceeds the first extension portion 32. In the above manner, the first module 1 is configured to be spaced apart from the external device 200 along the first direction X, which is beneficial to the heat dissipation of the first module 1, adjusts the distance between the external device 200 and the first module 1, facilitates the installation of the first module 1, and improves the convenience of installing the energy storage device 100.

[0049] In some embodiments, the first extension portion 32 and the first connection portion 31 can avoid the raised portion of the external device 200 that is opposite to the first module 1. For example, when the external device 200 is a wall, the skirting tiles on the wall can be avoided to facilitate the connection between the first connection member 3 and the external device 200, thereby improving the convenience of installation of the energy storage device 100.

[0050] In some embodiments, Figure 2As shown, along the first direction X, the first connecting portion 31 is arranged on a side of the first module 1 close to the external device 200 to facilitate the connection between the first connecting member 3 and the external device 200. The length of the first connecting member 3 along the first direction X can be shortened, the size of the first connecting member 3 can be reduced, and the weight of the first connecting member 3 can be reduced.

[0051] In some embodiments, the first fixing portion 34 is configured to be fixedly connected to the wall, the first module 1 is set on the ground, and the first extension portion 32 and the second extension portion 33 are configured to avoid the protruding part of the wall. Figure 2 and Figure 3 As shown, the first extension portion 32 extends in a direction away from the ground, and then the second extension portion 33 is located above the first connection portion 31. The second extension portion 33 can avoid the protruding portion at the bottom of the wall, such as the skirting tile, and the first fixing portion 34 can be connected to the portion of the wall where the skirting tile is not provided. Optionally, the extension direction of the first extension portion 32 is perpendicular to the ground. It is understandable that the first extension portion 32 can also extend in other directions, and the first extension portion 32 extends along a direction perpendicular to the first direction X to a protruding portion beyond the wall, the second extension portion 33 can avoid the protruding portion of the wall, and the first fixing portion 34 can be connected to a portion other than the protruding portion of the wall.

[0052] In some embodiments, Figure 3 As shown, there is an angle A between the first extension portion 32 and the second extension portion 33, 90°<=A<180°, which is helpful to avoid the protruding part at the bottom of the wall.

[0053] In some embodiments, Figures 1 to 3 As shown, the first fixing portion 34 is provided with a first hole 341, and the energy storage device 100 includes a first fastener 4, and the first fastener 4 passes through the first hole 341 and is detachably connected to the external device 200, so as to detachably connect the first connecting member 3 to the external device 200. Optionally, the first fastener 4 is an expansion bolt. It can be understood that the first hole 341 can also be directly connected to the connecting member on the external device 200, for example, the external device 200 is provided with a connecting column (not shown) or a connecting hook (not shown), and the first connecting member 3 is directly connected to the connecting column or the connecting hook through the first hole 341.

[0054] In some embodiments, Figure 3As shown, the first hole 341 extends along the third direction Z. When the first fastener 4 is loosened, the first connector 3 moves relative to the external device 200 along the third direction Z. Then, tightening the first fastener 4 changes the position of the first connector 3 relative to the external device 200 along the third direction Z, thereby changing the position of the first module 1 relative to the external device 200 along the third direction Z. When the mounting hole (not shown) on the external device 200 is deviated along the third direction Z, and the deviation is within a certain range, since the first hole 341 extends along the third direction Z, the first fastener 4 normally passes through the first hole 341 and is connected to the mounting hole on the external device 200. Therefore, when the mounting hole on the external device 200 is deviated along the third direction Z, the first connector 3 is also normally connected to the mounting hole on the external device 200, thereby improving the convenience of installing the energy storage device 100.

[0055] In some embodiments, Figure 3 As shown, the first fixing portion 34 is provided with a plurality of first holes 341, and the plurality of first holes 341 are arranged at intervals along the second direction Y. By changing the first holes 341 through which the first fastener 4 is passed, the position of the first fastener 4 relative to the external device 200 along the second direction Y can be changed, and special positions on the external device 200, such as excessive protrusions, excessive depressions, or positions with holes, or positions where cables, electrical equipment, or weak positions are set, can be avoided, thereby reducing the difficulty of connecting the first connecting member 3 with the external device 200 and increasing the stability of the connection between the first connecting member 3 and the external device 200. By each of the plurality of first fasteners 4 passing through a first hole 341 to connect with the external device 200, the stability of the connection between the first fixing portion 34 and the external device 200 is increased.

[0056] In some embodiments, the first connector 3 is welded to the first module 1 to enhance the connection stability between the first connector 3 and the first module 1. In other embodiments, the first connector 3 is connected to the first module 1 by screws or adhesive bonding, or the first connector 3 is formed by punching and bending from the first module 1.

[0057] In some embodiments, a plurality of first connectors 3 are connected to the same first module 1, and the plurality of first connectors 3 are arranged at intervals to enhance the stability of the connection between the first module 1 and the external device 200. Optionally, the plurality of first connectors 3 are arranged at intervals along the second direction Y. Optionally, two first connectors 3 are connected to the same first module 1.

[0058] In some embodiments, Figure 2 and Figure 5 As shown, the energy storage device 100 includes a third module 8 , and the third module 8 and the second module 2 are stacked along a third direction Z. Optionally, the third module 8 may be substantially in the shape of a cuboid, so as to facilitate stacking of the third module 8 and the second module 2 .

[0059] The third module 8 can be the same module as the second module 2, or can be a different module. For example, the third module 8 and the second module 2 are both battery modules; or the second module 2 is a battery module, and the third module 8 is a control module, which is used to control the charging and discharging of the battery module.

[0060] In some embodiments, the energy storage device 100 includes a plurality of battery modules, and among any two adjacent battery modules, one battery module is the second module 2 , and the other battery module is the third module 8 .

[0061] In some embodiments, Figure 1 and Figure 2 As shown, the energy storage device 100 includes a second connector 5, which is fixed to the second module 2, and the second connector 5 is configured to be fixedly connected to the external device 200. The second connector 5 is fixedly connected to the second module 2 and the external device 200, so that the second module 2 is fixed to the external device 200, thereby reducing the shaking and tipping of the second module 2.

[0062] In some embodiments, Figure 1 , Figure 2 and Figure 4 As shown, the second connecting member 5 includes a second connecting portion 51, a third extending portion 52, a fourth extending portion 53 and a second fixing portion 54. The second connecting portion 51 is fixed to the second module 2, and the second fixing portion 54 is configured to be fixedly connected to the external device 200. The third extending portion 52 is connected to the second connecting portion 51. The fourth extending portion 53 connects the second fixing portion 54 and the third extending portion 52. In the above manner, the second connecting member 5 fixes the second module 2 to the external device 200. Optionally, the second connecting portion 51, the third extending portion 52, the fourth extending portion 53 and the second fixing portion 54 are all in the form of thin sheets, and the second connecting portion 51, the third extending portion 52, the fourth extending portion 53 and the second fixing portion 54 are formed by bending the thin sheet-shaped second connecting member 5. Optionally, the second connecting member 5 is made of metal.

[0063] In some embodiments, Figure 2 and Figure 4 As shown, along the first direction X, the third extension portion 52 exceeds the second fixing portion 54; along the third direction Z, the third extension portion 52 exceeds the second module 2; along the third direction Z, the second fixing portion 54 exceeds the third extension portion 52. In the above manner, the second module 2 is configured to be spaced apart from the external device along the first direction X, which is not only beneficial to the heat dissipation of the second module 2, but also adjusts the distance between the external device 200 and the first module 1, and facilitates the installation of the second module 2.

[0064] In some embodiments, Figure 2 and Figure 4As shown, in the above manner, the third extension portion 52 and the second connection portion 51 avoid the protrusions on the external device 200 facing the second module 2. For example, when the external device 200 is a wall, the socket on the wall can be avoided, facilitating the connection between the second connecting member 5 and the external device 200.

[0065] In some embodiments, as Figure 2 and Figure 4 shown, the third extension portion 52 extends in a direction away from the ground. Further, the fourth extension portion 53 is located above the second connection portion 51. The fourth extension portion 53 can avoid the protruding part on the external device 200 facing the second module 2. For example, the socket on the wall can be avoided. Optionally, the extending direction of the first extension portion 32 is perpendicular to the ground. It can be understood that the third extension portion 52 can also extend in other directions. The third extension portion 52 extends along a direction perpendicular to the first direction X to extend beyond the protruding part of the external device 200, and the second extension portion 33 avoids the protruding part of the external device 200. The first fixing portion 34 can be connected to a part of the external device 200 other than the protruding part.

[0066] In some embodiments, as Figure 4 shown, there is an included angle B between the third extension portion 52 and the fourth extension portion 53, where 90° < B < 180°. This is beneficial to the assembly of the second connecting member 5.

[0067] In some embodiments, as Figure 2 and Figure 4 shown, the second connection portion 51 is provided with a second hole 511. The energy storage device 100 includes a second fastener 6. The second fastener 6 passes through the second hole 511 and is detachably connected to the second module 2 to detachably connect the second connecting member 5 and the second module 2. It can be understood that the second module 2 is correspondingly provided with a mounting hole (not shown) corresponding to the second hole 511. The mounting hole can be a through hole. The second fastener 6 is a bolt. The bolt is arranged in the mounting hole and the second hole 511 to connect the second connecting member 5 and the second module 2. The mounting hole can also be a threaded hole. The second fastener 6 is a screw. The screw passes through the second hole 511 and is threadedly connected to the mounting hole to connect the second connecting member 5 and the second module 2. In some other embodiments, the second connecting member 5 is connected to the second module 2 by snap connection, welding connection or bonding connection, or the second connecting member 5 is formed by punching and bending from the second module 2.

[0068] In some embodiments, as Figure 4As shown, the second hole 511 extends along the first direction X. When the second fastener 6 is loosened, the second connector 5 moves relative to the second module 2 along the first direction X. Then, the second fastener 6 is tightened to change the position of the second connector 5 relative to the second module 2 along the first direction X, thereby adjusting the spacing between the second connector 5 and the external device 200, reducing the connection difficulty between the second connector 5 and the external device 200; making the second fixing portion 54 contact the external device 200, increasing the connection stability between the second connector 5 and the external device 200. In the above manner, the second module 2 adapts to different spacings with the external device 200, which is conducive to reducing the installation difficulty and increasing the installation stability of the energy storage device 100, and improving the convenience of installing the energy storage device 100.

[0069] In some embodiments, Figure 4 As shown, the second connection part 51 is provided with a second hole 511, and a plurality of second holes 511 are arranged at intervals along the second direction Y. By changing the second hole 511 through which the second fastener 6 is passed, the position of the second fastener 6 relative to the second module 2 along the second direction Y can be changed, so that special positions on the external device 200, such as excessive protrusions, excessive depressions, or positions with holes, or positions where cables, electrical equipment, or weak positions are set, can be avoided, thereby reducing the difficulty of connecting the second connection part 5 with the external device 200, increasing the stability of the connection between the second connection part 5 and the external device 200, and improving the convenience of installation of the energy storage device 100. By having a plurality of second fasteners 6 each pass through a second hole 511 to connect with the second module 2, the stability of the connection between the second connection part 51 and the second module 2 is increased. When the second connecting member 5 is connected to the external device 200 by screws, if the mounting hole (not shown) on the external device 200 is deviated along the second direction Y and the deviation is within a certain range, the correct alignment between the second connecting member 5 and the mounting hole on the external device 200 can be corrected by changing the position of the second connecting member 5 relative to the second module 2 along the second direction Y, so that when the mounting hole on the external device 200 is deviated along the second direction Y, the second connecting member 5 is also normally connected to the mounting hole.

[0070] In some embodiments, a plurality of second connectors 5 are connected to the same second module 2, and the plurality of second connectors 5 are arranged at intervals to enhance the stability of the connection between the second module 2 and the external device 200. Optionally, the plurality of second connectors 5 are arranged at intervals along the second direction Y. Optionally, two second connectors 5 are connected to the same second module 2.

[0071] In some embodiments, Figure 4As shown, the second fixing portion 54 is provided with a third hole 541, and the energy storage device 100 includes a third fastener 7, and the third fastener 7 passes through the third hole 541 and is detachably connected to the external device 200, so as to detachably connect the second connecting member 5 to the external device 200. Optionally, the third fastener 7 is an expansion bolt. It is understandable that the third hole 541 can also be directly connected to a connecting member on the external device 200, for example, the external device 200 is provided with a connecting column (not shown) or a connecting hook (not shown), and the second connecting member 5 is directly connected to the connecting column or the connecting hook through the third hole 541.

[0072] In some embodiments, Figure 4 As shown, the third hole 541 extends along the third direction Z, that is, extends along the vertical direction. When the third fastener 7 is loosened, the second connection member 5 moves relative to the external device 200 along the third direction Z. Then, the third fastener 7 is tightened to change the position of the second connection member 5 relative to the external device 200 along the third direction Z, thereby changing the position of the second module 2 relative to the external device 200 along the third direction Z. When the mounting hole (not shown) on the external device 200 is deviated along the third direction Z, and the deviation is within a certain range, since the third hole 541 extends along the third direction Z, the third fastener 7 normally passes through the third hole 541 and is connected to the mounting hole on the external device 200. Therefore, when the mounting hole on the external device 200 is deviated along the third direction Z, the second connection member 5 is also normally connected to the mounting hole on the external device 200.

[0073] In some embodiments, Figure 4 As shown, the third extension portion 52 includes a convex portion 521, and the convex portion 521 is configured to abut against the third module 8 along the first direction X. When the second module 2 and the third module 8 are stacked on each other, the third module 8 can abut against the convex portion 521 of the second module 2 and move close to the second module 2 at the same time, thereby assisting in aligning the second module 2 and the third module 8 along the first direction X, which is conducive to reducing the difficulty of stacking the second module 2 and the third module 8, improving the stacking efficiency, and improving the convenience of installing the energy storage device 100. Optionally, the convex portion 521 can be stamped on the second connector 5, can be cast together with other parts of the second connector 5, and can be welded or bonded to other parts of the second connector 5.

[0074] In some embodiments, Figure 4 As shown, the convex portion 521 extends to the fourth extension portion 53. The convex portion 521 extends from the third extension portion 52 to the fourth extension portion 53, increasing the anti-bending performance of the bend between the third extension portion 52 and the fourth extension portion 53, and improving the problem that the bend is easily deformed under the action of external force. In some embodiments, as Figure 4As shown, the convex portion 521 extends to the second fixing portion 54, thereby increasing the anti-bending performance of the bending portion between the second fixing portion 54 and the fourth extending portion 53, and improving the problem that the bending portion is easily deformed under the action of external force.

[0075] In some embodiments, 120°<=B<180°. By limiting the angle B to be within the above range, when the third module 8 contacts the fourth extension portion 53, the fourth extension portion 53 guides the third module 8 to contact the third extension portion 52, thereby improving the problem that when the third module 8 is stacked with the second module 2, the third module 8 will be stuck at the bend between the third extension portion 52 and the fourth extension portion 53. Preferably, the angle B is 120 degrees.

[0076] In some embodiments, Figure 1 and Figure 2 As shown, the energy storage device 100 includes a plurality of support members 9, which are arranged at intervals on the side of the first module 1 away from the second module 2. The first module 1 can be a base, which can be placed directly on the ground, but when the ground is uneven, for example, there are bulges on the ground, the first module 1 will be placed unsteadily, and the plurality of support members 9 are used to support the ground, avoiding the bulges on the ground, thereby improving the stability of the first module 1 placed on the ground.

[0077] In some embodiments, the support member 9 is configured to adjust the length thereof extending from the first module 1 along the third direction Z.

[0078] In some embodiments, the support member 9 is connected to the first module 1, and the support member 9 is configured to adjust the length of the support member 9 extending downward from the first module 1 along the third direction Z. In the above manner, the length of the support member 9 extending downward from the first module 1 is adjusted, and the first module 1 can be adjusted to be horizontal when the ground is uneven or tilted; when there are protrusions or depressions on the ground, each support member 9 can be adjusted to support the ground, which is conducive to improving the stability and horizontality of the first module 1 placed on the ground. Optionally, the support member 9 is a foot, and a threaded hole (not shown) is provided on the base, the axis of the threaded hole is parallel to the third direction Z, the foot is threadedly connected to the threaded hole, and the length of the support member 9 extending downward from the first module 1 along the third direction Z can be adjusted by rotating the foot.

[0079] In the energy storage device 100 involved in the embodiment of the present application, the first connecting member 3 fixes the first module 1 to the external device 200, thereby improving the problem that the first module 1 and the second module 2 may shake or fall; along the first direction X, the first extending portion 32 of the first connecting member 3 exceeds the first fixing portion 34, and along the third direction Z, the first extending portion 32 exceeds the first module 1, and the first fixing portion 34 exceeds the first extending portion 32, so that the first module 1 and the external device 200 are spaced apart along the first direction X, which is beneficial to the heat dissipation of the first module 1, adjusts the distance between the external device 200 and the first module 1, and facilitates the installation of the first module 1; the first extending portion 32 and the first connecting portion 31 can avoid the raised portion of the external device 200 facing the first module 1, thereby improving the convenience of installing the energy storage device 100. The first hole 341 of the first connecting member 3 extends along the third direction Z, and the first connecting member 3 is provided with a plurality of first holes 341 arranged at intervals along the second direction Y. When the mounting hole on the external device 200 is deviated along the second direction Y and the third direction Z, the first connecting member 3 is also normally connected to the mounting hole. The second connecting member 5 is provided with a plurality of second holes 511 arranged at intervals along the second direction Y, and the third hole 541 of the second fixing portion 54 extends along the third direction Z. When the mounting hole on the external device 200 is deviated along the second direction Y and the third direction Z, the second connecting member 5 is also normally connected to the mounting hole. The second hole 511 of the second connecting member 5 extends along the first direction X, and the spacing between the second connecting member 5 and the external device 200 can be adjusted, thereby reducing the connection difficulty between the second connecting member 5 and the external device 200 and increasing the connection stability. The convex portion 521 of the second connecting member 5 abuts against the third module 8 along the first direction X. When the second module 2 and the third module 8 are stacked on each other, the convex portion 521 assists in aligning the second module 2 and the third module 8 along the first direction X, which is beneficial to reduce the difficulty of stacking the second module 2 and the third module 8 and improve the stacking efficiency.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Under the concept of the present application, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present application as described above, which are not provided in detail for the sake of simplicity. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An energy storage device, characterized in that: include: A first module, the first module is configured to be spaced apart from the external device along a first direction; A second module, comprising a plurality of battery cells, wherein the second module and the first module are stacked along a third direction, and the first direction is perpendicular to the third direction; A first connecting member, comprising a first connecting portion, a first extending portion, a second extending portion and a first fixing portion, wherein the first connecting portion is fixed to the first module, and the first fixing portion is configured to be fixedly connected to the external device; The first extending portion is connected to the first connecting portion, and along the third direction, the first extending portion exceeds the first module; The second extending portion connects the first fixing portion and the first extending portion. Along the third direction, the first fixing portion exceeds the first extending portion. Along the first direction, the first extending portion exceeds the first fixing portion.

2. The energy storage device according to claim 1, characterized in that: Along the first direction, the first connecting portion is disposed on a side of the first module close to the external device.

3. The energy storage device according to claim 1, characterized in that: The first fixing portion is configured to be fixedly connected to a wall, the first module is disposed on the ground, and the first extending portion is configured to avoid a protruding portion of the wall.

4. The energy storage device according to claim 1, characterized in that: There is an angle A between the first extension portion and the second extension portion, and 90°<=A<180°.

5. The energy storage device according to any one of claims 1 to 4, characterized in that: The energy storage device comprises a third module, and the second module and the third module are stacked along the third direction; The energy storage device includes a second connecting member, the second connecting member includes a second connecting portion, a third extending portion, a fourth extending portion, and a second fixing portion, the second connecting portion is fixed to the second module, and the second fixing portion is configured to be fixedly connected to the external device; The third extending portion is connected to the second connecting portion, and along the third direction, the third extending portion exceeds the second module; The fourth extending portion connects the second fixing portion and the third extending portion. Along the third direction, the second fixing portion exceeds the third extending portion. Along the first direction, the third extending portion exceeds the second fixing portion.

6. The energy storage device according to claim 5, characterized in that: The third extension portion includes a convex portion, and the convex portion is configured to abut against the third module along the first direction.

7. The energy storage device according to claim 5, characterized in that: The second connecting portion is provided with a plurality of second holes, and the plurality of second holes are arranged at intervals along the second direction; The energy storage device includes a second fastener, and the second fastener passes through one of the second holes and is detachably connected to the second module; The second direction is perpendicular to the first direction and the third direction.

8. The energy storage device according to claim 5, characterized in that: The second fixing portion is provided with a third hole, and the third hole extends along the third direction; The energy storage device includes a third fastener, and the third fastener passes through the third hole and is detachably connected to the external device.

9. The energy storage device according to claim 5, characterized in that: There is an angle B between the third extension and the fourth extension, 90° <B<180°。 10. The energy storage device according to claim 1, characterized in that: The energy storage device comprises a plurality of support members, and the plurality of support members are arranged at intervals on a side of the first module away from the second module; Wherein, the support member is connected to the first module, and the support member is configured to adjust the length extending from the first module along the third direction.

Images