Mounting bracket and energy storage device

Abstract

The application relates to the technical field of energy storage devices, aims to solve the technical problem that some known energy storage devices have poor heat dissipation performance, and provides a mounting bracket and an energy storage device. The mounting bracket is used for supporting the energy storage device, and the mounting bracket comprises a plurality of supporting parts and a plurality of connecting parts. The supporting part forms a supporting surface on one side in a first direction, and the supporting surface is used for abutting against the energy storage device; the other side of the supporting part in the first direction is concave in the part corresponding to the supporting surface to form an avoiding groove, and the supporting surface and the avoiding groove are respectively provided with a plurality of avoiding grooves. Two adjacent supporting parts are connected through a connecting part, the connecting part is provided with a heat dissipation hole, the avoiding groove is communicated with the heat dissipation hole, and the avoiding groove and the heat dissipation hole are jointly formed into a heat dissipation channel, the heat dissipation channel is communicated to an external environment, the heat of the energy storage device can heat the air in the heat dissipation channel and form an air flow to be discharged through the heat dissipation channel. The application has the beneficial effect of improving the heat dissipation performance of the energy storage device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage devices, in particular to a mounting bracket and an energy storage device. BACKGROUND

[0002] Known energy storage devices have a risk of thermal runaway in actual application, and may cause an explosion accident due to temperature rise. The energy storage devices usually need to be fixed and installed by a bracket, and some energy storage devices are not suitable for being directly fixed and installed by a cooling plate. When the energy storage devices are installed by an ordinary bracket, it is difficult to achieve good heat dissipation effect on the energy storage devices, and the local temperature of the energy storage devices is prone to be too high, thereby causing a thermal runaway phenomenon, and even causing an explosion accident in severe cases. SUMMARY

[0003] The present application provides a mounting bracket and an energy storage device to solve the technical problem of poor heat dissipation performance of some known energy storage devices.

[0004] Embodiments of the present application are implemented as follows:

[0005] In a first aspect, the present application provides a mounting bracket for supporting an energy storage device, the mounting bracket comprising a plurality of support portions and a plurality of connecting portions. The support portion forms a support surface on one side in a first direction, and the support surface is used to abut against the energy storage device. The support portion is recessed to form an avoidance groove on the other side in the first direction corresponding to the support surface, and the support surface and the avoidance groove are provided with a plurality of avoidance grooves, respectively. Two adjacent support portions are connected by one connecting portion, the connecting portion is provided with a heat dissipation hole, the avoidance groove and the heat dissipation hole are communicated, and the avoidance groove and the heat dissipation hole are jointly formed into a heat dissipation channel, the heat dissipation channel is communicated to the external environment, and the heat of the energy storage device can heat the air in the heat dissipation channel and form an air flow to be discharged through the heat dissipation channel.

[0006] The support surface of the mounting bracket of the present application adopts surface support, has a large support area, and the plurality of support surfaces of the plurality of support portions can realize large-area support of the energy storage device. The large-area support support portion of the present application can effectively limit the deformation of the shell of the energy storage device, thereby reducing the deformation and short circuit of the internal cells of the energy storage device and improving the operation safety of the energy storage device. The space in the avoidance groove is spaced apart from the energy storage device, and the space in the heat dissipation hole is also spaced apart from the energy storage device. After the avoidance groove and the heat dissipation hole are communicated, a heat dissipation channel communicated to the external environment is formed. The heat generated during the operation of the energy storage device can directly heat the air in the avoidance groove and the heat dissipation hole, and can also directly heat the area of the support surface of the support portion, and then conduct the heat to the air in the avoidance groove through the area, so that the air is heated to form an air flow and is conducted to the external environment along the heat dissipation channel, thereby improving the heat dissipation effect on the energy storage device.

[0007] In a possible implementation manner,

[0008] The plurality of support portions and the plurality of connecting portions are arranged in sequence and staggered in the second direction.

[0009] In a possible implementation manner,

[0010] The connecting portion comprises a plurality of connecting pieces, the side surface of the connecting piece is arranged in a spaced manner between the support surface, and can form a gap with the side surface of the energy storage device, the plurality of connecting pieces are arranged in a spaced manner in the third direction, and the heat dissipation holes are defined between two adjacent connecting pieces, the heat dissipation holes are communicated with the gap and the avoiding groove, and jointly form the heat dissipation channel.

[0011] In a possible implementation manner,

[0012] The gap is communicated with two heat dissipation holes on two sides in the third direction, and is communicated with the avoiding groove on one side in the second direction.

[0013] In a possible implementation manner,

[0014] The support surface on one side of the support portion and the avoiding groove are arranged in sequence and staggered in the third direction.

[0015] In a possible implementation manner,

[0016] On the same side of the support portion, the avoiding grooves of two support portions are arranged in sequence and staggered in the third direction.

[0017] In a possible implementation manner,

[0018] The connecting portion is provided with a plurality of heat dissipation holes, and the heat dissipation holes of two connecting portions are arranged in sequence and staggered in the third direction.

[0019] In a possible implementation manner,

[0020] In the second direction, a reinforcing rib is formed between the edge of the support surface arranged in correspondence and the edge of the avoiding groove.

[0021] In a possible implementation manner,

[0022] The mounting bracket further comprises a mounting bottom plate, the connecting portion is arranged on the mounting bottom plate, and the mounting bottom plate is used for vertically supporting the energy storage device.

[0023] In a second aspect, the application provides an energy storage device, comprising an energy storage device and the mounting bracket described above. The support surface of the mounting bracket abuts against the side surface of the energy storage device, so as to laterally support the energy storage device. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained from these drawings without creative labor.

[0025] Figure 1 A structural schematic diagram of a mounting bracket according to an embodiment of the present application;

[0026] Figure 2 A structural schematic diagram of a mounting bracket according to an embodiment of the present application;

[0027] Figure 3 A sectional view of a mounting bracket fixing an energy storage device according to an embodiment of the present application;

[0028] Figure 4 A structural schematic diagram of a mounting bracket according to another embodiment of the present application;

[0029] Figure 5 A structural schematic diagram of a mounting bracket according to another embodiment of the present application;

[0030] Figure 6 A structural schematic diagram of an energy storage device according to an embodiment of the present application;

[0031] Figure 7 A structural schematic diagram of an energy storage device according to another embodiment of the present application.

[0032] Main element symbol explanation:

[0033] Mounting bracket 100

[0034] Supporting part 20

[0035] Supporting surface 21

[0036] Avoidance groove 22

[0037] Reinforcing rib 23

[0038] Connecting part 30

[0039] Heat dissipation hole 31

[0040] Connecting sheet 32

[0041] Gap 33

[0042] Heat dissipation channel 40

[0043] Mounting bottom plate 51

[0044] First baffle 52

[0045] Heat dissipation through hole 521

[0046] Guide slope 522

[0047] Second baffle 53

[0048] Energy storage device 200

[0049] Energy storage device 300

[0050] First direction X

[0051] Second direction Y

[0052] Third direction Z DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments of the present application.

[0054] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0056] Some embodiments of the present application are described in detail. The following embodiments and features of the embodiments can be combined with each other without conflict.

[0057] Known energy storage devices, such as batteries, have a high energy density, and the electrolyte is a flammable organic substance. When subjected to high temperature or violent impact, internal and external short circuits of the lithium battery are easily caused, the temperature of the lithium battery is further sharply increased, and then serious thermal runaway phenomena such as explosion and fire are caused. Known energy storage devices are usually installed in a bracket, and the bracket fixes the energy storage device and prevents the energy storage device from being impacted.

[0058] Known racks include types such as cooling plates and general racks. Although the cooling plate can have a good cooling effect on the energy storage device, its ability to withstand impact is relatively poor, and its cooling system failure will more easily cause safety accidents, so some energy storage devices are not suitable for installation with cooling plates. When the known general rack fixes the energy storage device, it will affect the heat dissipation of the energy storage device, easily leading to poor heat dissipation in some areas of the energy storage device, and then causing heat accumulation in the local area of the energy storage device, and making the temperature too high, causing thermal runaway. In addition, during the charging and discharging process of the energy storage device, the internal electrochemical reaction of the energy storage device can easily cause the shell to expand. The fixing effect of the known rack on the energy storage device is general. In the case of shell expansion, the shell deformation of the energy storage device cannot be well limited, and then the internal cell of the energy storage device is easily deformed and causes short circuit, and then leads to thermal runaway problem.

[0059] The embodiments of the present application provide a mounting rack for supporting an energy storage device, such as a battery structure of a lithium battery, which can improve the heat dissipation effect of the energy storage device during operation, reduce the deformation of the energy storage device, and improve the operation safety of the energy storage device.

[0060] Embodiments

[0061] Referring to Figure 1 The embodiments provide a mounting rack 100 for supporting an energy storage device 200, which includes a plurality of support portions 20 and a plurality of connecting portions 30. The support portion 20 forms a support surface 21 on one side along a first direction X, and the other side is recessed to form an avoidance groove 22. The two sides of the support portion 20 respectively have a plurality of support surfaces 21 and a plurality of avoidance grooves 22. The connecting portion 30 connects two support portions 20, and the connecting portion 30 is provided with a heat dissipation hole 31. The avoidance groove 22 and the heat dissipation hole 31 are communicated and jointly form a heat dissipation channel 40. The heat dissipation channel 40 is communicated to the external environment, and the heat of the energy storage device 200 can heat the air in the heat dissipation channel 40 and form an air flow to be discharged through the heat dissipation channel 40.

[0062] Referring to Figure 1 The connecting portion 30 is a plate structure, the support portion 20 is a plate structure, and the first direction X is the thickness direction of the connecting portion and the thickness direction of the support portion 20. The support surface 21 adopts surface support and has a large support area. The plurality of support surfaces 21 of the plurality of support portions 20 can realize large-area support of the energy storage device 200. When the energy storage device 200 operates and causes the shell to expand and deform, the large-area support of the support portion 20 of the embodiments can effectively limit the shell deformation of the energy storage device 200, thereby reducing the deformation and short circuit of the internal cell of the energy storage device 200, and improving the operation safety of the energy storage device 200.

[0063] The inner space of the avoiding groove 22 is spaced apart from the energy storage device 200, and the inner space of the heat dissipation hole 31 is also spaced apart from the energy storage device 200. After the avoiding groove 22 and the heat dissipation hole 31 are communicated, a heat dissipation channel 40 that communicates to the external environment can be formed. The heat generated by the energy storage device 200 during operation can directly heat the air in the avoiding groove 22 and the heat dissipation hole 31, and can also directly heat the area of the supporting surface 21 of the supporting part 20, and then conduct the heat to the air in the avoiding groove 22 through the area, so that the air is heated to form an air flow and is conducted to the external environment along the heat dissipation channel 40, thereby improving the heat dissipation effect of the energy storage device 200.

[0064] It can be understood that the avoiding groove 22 and the heat dissipation hole 31 are communicated in the space defined between the two planes perpendicular to the two side surfaces of the connecting part.

[0065] In addition, it can be understood that the supporting part 20 of the embodiment is provided with a plurality of avoiding grooves 22 and supporting surfaces 21 on the two side surfaces in the first direction X, and the mounting bracket 100 also includes a plurality of supporting parts 20. Compared with the known mounting bracket capable of supporting the surface, when supporting the energy storage device 200, the distribution of each supporting surface 21 of the mounting bracket 100 of the embodiment is more uniform and dispersed, which can effectively reduce the temperature rise problem caused by large-area support, and at the same time ensure the supporting effect of the energy storage device 200.

[0066] In addition, the mounting bracket 100 of the embodiment can be mounted on the side surface of the energy storage device 200 to play a lateral supporting role on the side surface, or can be mounted on the bottom surface of the energy storage device 200 to directly support the bottom surface of the energy storage device 200. The fixed cooperation of the mounting bracket 100 and the energy storage device 200 at each position can be determined according to actual needs.

[0067] For reference, Figure 1 and Figure 4 In the embodiment, the plurality of supporting parts 20 and the plurality of connecting parts 30 are arranged in the second direction Y in sequence and staggered. Figure 1 In the mounting bracket 100 shown, the second direction Y is parallel to the direction of gravity, Figure 4 In the mounting bracket 100 shown, the second direction Y is parallel to the horizontal direction. In other embodiments of the application, the second direction Y can also be between the direction of gravity and the horizontal direction, which can be determined according to actual needs without specific limitation.

[0068] In the embodiment, the plurality of support portions 20 and the plurality of connecting portions 30 are staggered along the second direction Y in sequence, so that the distribution of the support surfaces 21 is more uniform, thereby making the installation bracket 100 support the energy storage device 200 more stably, and the distribution of the avoidance grooves 22 and the heat dissipation holes 31 is also more uniform, so that the heat dissipation channel 40 can receive heat from all parts of the energy storage device 200, and the areas with high heat generation and the areas with low heat generation of the energy storage device 200 can quickly conduct heat to the external environment through the airflow in the heat dissipation channel 40, thereby further improving the heat dissipation effect of the energy storage device 200.

[0069] For reference, Figure 1 and Figure 3 In the embodiment, the connecting portion 30 includes a plurality of connecting pieces 32, the side surfaces of the connecting pieces 32 are arranged at intervals between the support surfaces 21, and can form gaps 33 with the side surfaces of the energy storage device 200, the heat dissipation holes 31 are defined between two connecting pieces 32, the heat dissipation holes 31 communicate with the gaps 33 and the avoidance grooves 22, and together form the heat dissipation channel 40. When the installation bracket 100 supports the energy storage device 200, the side surfaces of the connecting pieces 32 form gaps 33 with the energy storage device 200, so that the connecting pieces 32 can not only realize the stable connection effect of the two support portions 20, but also can avoid the connecting pieces 32 abutting against the energy storage device 200, thereby avoiding the problem of local high temperature of the energy storage device 200, so that the area of the energy storage device 200 corresponding to the connecting pieces 32 can conduct heat to the air in the gaps 33, and then to the avoidance grooves 22, and to the external environment, thereby further improving the heat dissipation effect of the installation bracket 100 on the energy storage device 200. In addition, since the support portion 20 itself has a certain strength, in the embodiment, the area of the heat dissipation hole 31 is greater than the area of the connecting piece 32, so as to further increase the overall volume of the heat dissipation channel 40, thereby improving the heat dissipation and flow guiding performance of the heat dissipation channel 40, and improving the heat dissipation performance of the installation bracket 100 on the energy storage device 200.

[0070] It can be understood that the connecting piece 32 has two side surfaces in the first direction, the support portion 20 has two support surfaces 21 in the first direction, and the side surfaces of the connecting piece 32 are arranged at intervals between the support surfaces 21, which means that the two side surfaces are arranged at intervals with the two support surfaces 21 respectively.

[0071] For reference, Figure 2 and Figure 5In this embodiment, the gap 33 is connected to two heat dissipation holes 31 on both sides along the third direction Z, and to the clearance groove 22 on one side along the second direction Y. It can be understood that in this embodiment, the gap 33 of the connecting piece 32 has four sides. Two sides of the gap 33 are connected to the heat dissipation holes 31, the other side of the gap 33 is connected to the clearance groove 22, and the last side of the gap 33 is limited by the area where the support surface 21 is provided on the support portion 20. Therefore, most of the area of ​​the gap 33 is connected to the clearance groove 22 and the heat dissipation holes 31, allowing air in the relatively small gap 33 to quickly circulate to larger areas such as the clearance groove 22 and the heat dissipation holes 31, further avoiding the possibility of heat accumulation in the air within the gap 33 and improving the heat dissipation performance of the energy storage device 200.

[0072] See also Figure 2 and Figure 5 In this embodiment, the connecting portion 30 has multiple heat dissipation holes 31, which are spaced apart along the third direction Z. The support surface 21 and the clearance groove 22 on one side of the support portion 20 are sequentially staggered along the third direction Z. In this embodiment, on one side of the support portion 20, two clearance grooves 22 and one support surface 21 form a U-shaped structure. Because the clearance grooves 22 and the support surface 21 are sequentially staggered, the arrangement of the clearance grooves 22 and the support surface 21 in the second direction Y and the third direction Z is relatively uniform, ensuring a relatively stable support effect and reliable heat dissipation effect.

[0073] In this embodiment, the connecting portion 30 has multiple heat dissipation holes 31, and the heat dissipation holes 31 of the two connecting portions 30 are arranged alternately along the third direction Z. Since the heat dissipation holes 31 are arranged alternately along the third direction Z, the connection reliability of the connecting portion 30 to the two supporting portions 20 can be guaranteed.

[0074] The following is based on Figure 1 The mounting bracket 100 shown is illustrated with its specific heat dissipation channel 40, and the support portion 20 is described on one side of the illustration. Figure 1 The dashed lines in the diagram represent the airflow area. Figure 1The mounting bracket 100 shown includes four support portions 20 and five connecting portions 30. The support portion 20 includes four support surfaces 21 and five avoiding grooves 22 staggered in the second direction Y. The connecting portion 30 includes three connecting plates 32, and collectively defines three heat dissipation holes 31. The three connecting plates 32 are connected with the avoiding grooves 22, the support surfaces 21 and the avoiding grooves 22 in sequence. One communicating hole corresponds to one support surface 21, and the other two communicating holes correspond to one support surface 21 and one avoiding groove 22. Among them, the communicating holes on both sides of the mounting bracket 100 along the second direction Y are communicated with the external environment, and the communicating holes on one side of the mounting bracket 100 along the third direction Z and the avoiding grooves 22 are communicated with the external environment. The heat generated by the energy storage device 200 is conducted to the air in the communicating holes, the gaps 33 and the avoiding grooves 22, and is conducted to the communicating holes, the gaps 33 and the avoiding grooves 22 in the external environment through the air flow in the communicating holes, the gaps 33 and the avoiding grooves 22, and then to the external environment, completing the heat dissipation of the energy storage device 200. Figure 4 The heat dissipation process of the heat dissipation channel 40 of the mounting bracket 100 shown is similar to the foregoing heat dissipation process, except that the arrangement of the communicating holes, the gaps 33 and the avoiding grooves 22 is different. In this regard, no further description is given herein. In other embodiments of the present application, the communicating holes, the gaps 33 and the avoiding grooves 22 can also be distributed in other arrangement modes, and the foregoing rapid heat dissipation effect can also be achieved.

[0075] It can be understood that, according to the actual heat dissipation performance of the energy storage device 200, two avoiding grooves 22 can also be arranged between the two support surfaces 21 on the same side of the support portion 20. Therefore, the distribution of the support surfaces 21 and the avoiding grooves 22 on both sides of the support portion 20 can be determined according to actual heat dissipation requirements.

[0076] In the present embodiment, referring to Figure 2 , edges between the edges of the support surfaces 21 and the edges of the avoiding grooves 22 arranged correspondingly in the second direction Y form reinforcing ribs 23. The reinforcing ribs 23 can better protect the structure of the avoiding grooves 22, and can reinforce the support surface 21 on the other side of the avoiding grooves 22, reducing the possibility of deformation of the support surface 21 under the deformation of the shell of the energy storage device 200, so that the support surface 21 can more stably and reliably support the energy storage device 200.

[0077] In the present embodiment, referring to Figure 1 , Figure 3 and Figure 4 , the mounting bracket 100 further includes a mounting bottom plate 51, and the connecting portion 30 is arranged on the mounting bottom plate 51. The mounting bottom plate 51 is used for vertically supporting the energy storage device 200. The mounting bottom plate 51 can better support the mounting bracket 100 in the third direction Z.

[0078] The mounting bracket 100 further comprises a first baffle 52 and a second baffle 53, two first baffles 52 and two second baffles 53, the two first baffles 52 are respectively arranged at two ends of the bearing plate along the second direction Y and are respectively connected with the support part 20 or the connecting part 30, the two second baffles 53 are respectively arranged at two ends of the bearing plate along the second direction Y and are respectively connected with the support part 20 or the connecting part 30, and the first baffles 52 and the second baffles 53 are arranged in the third direction Z. The two first baffles 52 and the two second baffles 53 can jointly limit the energy storage device 200 in the second direction Y to stably fix the energy storage device 200.

[0079] In the embodiment, the first baffle 52 is provided with a heat dissipation through hole 521, which can further improve the heat dissipation effect of the mounting bracket 100 on the energy storage device 200. The first baffle 52 is provided with a guide inclined surface 522 on one side along the first direction X to guide the placement of the energy storage device 200.

[0080] Referring to Figure 6 and Figure 7 , the application also provides an energy storage equipment 300 comprising the energy storage device 200 and the mounting bracket 100 described above. The support surface 21 of the mounting bracket 100 abuts against the side surface of the energy storage device 200 to laterally support the energy storage device 200.

[0081] The energy storage equipment 300 comprises the mounting bracket 100 of any of the above embodiments, and thus has the beneficial effects of the mounting bracket 100 of any of the above embodiments, which will not be described here.

[0082] In addition, it can be understood that the number of mounting brackets 100 can be determined according to actual needs, for example, the mounting bracket 100 can be provided as one and arranged on one side of the energy storage device 200; the mounting bracket 100 can be provided as two and arranged on two opposite sides of the energy storage device 200 respectively; the mounting bracket 100 can be provided as multiple, and the energy storage device 200 is also provided as multiple, and one mounting bracket 100 is arranged on each of the two opposite sides of the energy storage device 200. That is, in the energy storage equipment 300, the specific number of mounting brackets 100 and energy storage devices 200 can be adjusted according to actual needs, and does not need to be specifically limited.

[0083] In the embodiment, the first direction X, the second direction Y and the third direction Z are arranged at an angle with each other. Advantageously, the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0084] The above embodiments are only used to illustrate the technical solutions of the application and not to limit it. Although the application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solutions of the application can be modified or replaced by equivalents without departing from the spirit and scope of the application.

Claims

1. A mounting bracket for supporting an energy storage device, characterized in that, The mounting bracket comprises: a plurality of support portions, the support portions forming a support surface on one side in the first direction, the support surface being used to abut against the energy storage device; the other side of the support portions in the first direction being recessed to form an avoidance groove corresponding to the support surface, the support surface and the avoidance groove being respectively provided with a plurality of; a plurality of connecting portions, two adjacent support portions being connected by one connecting portion, the connecting portion being provided with a heat dissipation hole, the avoidance groove and the heat dissipation hole being communicated and jointly forming a heat dissipation channel, the heat dissipation channel being communicated to the external environment, the heat of the energy storage device being capable of heating the air in the heat dissipation channel and forming an air flow to be discharged through the heat dissipation channel; the connecting portion comprising a plurality of connecting pieces, the side surface of the connecting piece being spaced apart from the support surface and capable of forming a gap with the side surface of the energy storage device, a plurality of the connecting pieces being spaced apart in the third direction, two adjacent connecting pieces defining the heat dissipation hole, the heat dissipation hole being communicated to the gap and the avoidance groove and jointly forming the heat dissipation channel; the gap being communicated to two heat dissipation holes on both sides in the third direction, and the gap being communicated to the avoidance groove on one side in the second direction.

2. The mounting bracket according to claim 1, wherein: a plurality of the support portions and a plurality of the connecting portions are sequentially staggered in the second direction.

3. The mounting bracket according to claim 2, wherein: the support surface on one side of the support portion and the avoidance groove are sequentially staggered in the third direction.

4. The mounting bracket according to claim 3, wherein: on the same side of the support portion, the avoidance grooves of two support portions are sequentially staggered in the third direction.

5. The mounting bracket according to claim 1, wherein: the connecting portion is provided with a plurality of heat dissipation holes, and the heat dissipation holes of two connecting portions are sequentially staggered in the third direction.

6. The mounting bracket according to claim 1, wherein: in the second direction, a reinforcing rib is formed between the edge of the support surface and the edge of the avoidance groove.

7. The mounting bracket according to claim 1, further comprising: a mounting bottom plate, the connecting portion being arranged on the mounting bottom plate, the mounting bottom plate being used to vertically support the energy storage device.

8. An energy storage device, characterized by, comprises: an energy storage device; the mounting bracket according to any one of claims 1 to 7, the support surface of the mounting bracket abutting against the side surface of the energy storage device to support the energy storage device.

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