Cabinet, energy storage apparatus, and electrical device

Abstract

The present application discloses a cabinet (10), an energy storage apparatus (100), and an electrical device (200). The cabinet (10) comprises a base (11), a first limiting member (12), and a second limiting member (13). The base (11) is provided with an accommodating recess (111) extending in a first direction (x). The accommodating recess (111) is provided with a first end (111a) and a second end (111b) disposed opposite to each other in the first direction (x). The first limiting member (12) is disposed on the base (11) and is located at the second end (111b). The first limiting member (12) abuts an end of a heat dissipation module (20) facing the same direction as the second end (111b). A limiting portion (13a) of the second limiting member (13) is connected to the first limiting member (12). A side of the limiting portion (13a) abuts a side of the heat dissipation module (20) along a second direction (y). A guide portion (13b) extends obliquely from the limiting portion (13a) towards the first end (111a) in the first direction (x), and is arranged to gradually diverge from the side of the limiting portion (13a) abutting the heat dissipation module (20). The guide portion (13b) is used to provide installation guidance for the heat dissipation module (20) to move into the accommodating recess (111) from the first end (111a) towards the second end (111b) so as to abut one side of the limiting portion (13a).

Description

Cabinet, energy storage device and electric equipment

[0001] Related Cross Reference

[0002] The present application claims priority to the Chinese patent application No. 2024221817736, filed on September 5, 2024, and entitled "Cabinet, Energy Storage Device and Electric Equipment", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of energy storage, and in particular, to a cabinet, an energy storage device and an electric equipment. BACKGROUND

[0004] In related technologies, in order to avoid the situation that the energy storage device cannot normally operate or even explodes due to overheating during operation, a heat dissipation module is usually arranged in the cabinet of the energy storage device to dissipate heat for the battery module, and the heat dissipation module usually adopts a liquid cooling unit or an air cooling unit.

[0005] However, when the existing energy storage device installs the heat dissipation module to the cabinet, it is difficult to ensure that the heat dissipation module is installed to the accurate position, resulting in low installation precision of the heat dissipation module. SUMMARY

[0006] The present application discloses a cabinet, an energy storage device and an electric equipment, and the heat dissipation module can be accurately installed to the cabinet, and the installation precision of the heat dissipation module is high.

[0007] In order to achieve the above-mentioned purpose, the present application discloses a cabinet, an energy storage device and an electric equipment.

[0008] A cabinet is applied to an energy storage device, the energy storage device includes a heat dissipation module, and the cabinet includes:

[0009] A base has a receiving groove, the receiving groove is arranged along a first direction, the receiving groove has a first end and a second end opposite to the first end in the first direction, and the receiving groove is used for accommodating the heat dissipation module moving into the receiving groove from the first end to the second end;

[0010] A first limiting piece is arranged on the base, the first limiting piece is located at the second end, and the first limiting piece is used for abutting against one end of the heat dissipation module which is the same as the second end in the direction;

[0011] The second limiting piece includes a limiting part and a guiding part. The limiting part is connected to the first limiting piece and extends from the first limiting piece to the first end along the first direction. One side of the limiting part is used to abut against one side of the heat dissipation module along the second direction. The guiding part is connected to one end of the limiting part away from the first limiting piece. The guiding part extends from the limiting part to the first end along the first direction and gradually moves away from the side of the limiting part used to abut against the heat dissipation module. The guiding part is used to provide installation guidance for the heat dissipation module to move from the first end to the second end into the accommodating groove and abut against one side of the limiting part.

[0012] The energy storage device includes a heat dissipation module and the cabinet. The heat dissipation module is accommodated in the accommodating groove. The first limiting piece abuts against one end of the heat dissipation module which is oriented towards the second end. One side of the limiting part abuts against one side of the heat dissipation module along the second direction.

[0013] The energy storage device includes a heat dissipation module and the cabinet. The heat dissipation module is accommodated in the accommodating groove. The first limiting piece abuts against one end of the heat dissipation module which is oriented towards the second end. One side of the limiting part abuts against one side of the heat dissipation module along the second direction.

[0014] One end of the heat dissipation module which is oriented towards the first end is provided with a second connecting piece. The cabinet further includes a first connecting piece. The first connecting piece is arranged on the base. The first connecting piece is located at the first end. The first connecting piece is detachably connected to the second connecting piece.

[0015] The energy storage device is used to supply power to the electric device.

[0016] The application has at least the following beneficial effects:

[0017] By setting the first limiting piece on the base, the first limiting piece is located at the second end of the accommodating groove, and the first limiting piece is abutted with the same end of the heat dissipation module as the second end, so that the first direction is limited. At the same time, the limiting part of the second limiting piece is connected to the first limiting piece, one end of the limiting part away from the first limiting piece is connected with the guide part, the guide part extends from the limiting part to the first end in the first direction, and gradually away from the side of the limiting part for abutting with the heat dissipation module. The guide part can provide installation guide when the heat dissipation module moves into the accommodating groove from the first end to the second end and abuts with one side of the limiting part. When the side of the heat dissipation module along the second direction abuts with one side of the limiting part, the limiting part can limit the heat dissipation module along the second direction. In this way, the position of the heat dissipation module in the accommodating groove is limited in multiple directions, the heat dissipation module can be accurately installed to the cabinet body, and the installation precision of the heat dissipation module is high. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Fig. 1 is a structural schematic diagram of an energy storage device disclosed by the present application;

[0020] Fig. 2 is a structural schematic diagram of a cabinet disclosed by the present application;

[0021] Fig. 3 is a structural schematic diagram of an energy storage device (omitting battery module) disclosed by the present application;

[0022] Fig. 4 is an exploded structural schematic diagram of an energy storage device (omitting battery module) disclosed by the present application;

[0023] Fig. 5 is a structural schematic diagram of a first limiting piece and a second limiting piece disclosed by the present application;

[0024] Fig. 6 is a structural schematic diagram of a second limiting piece disclosed by the present application;

[0025] Fig. 7 is an enlarged structural schematic diagram of I in Fig. 4;

[0026] Fig. 8 is a structural schematic diagram of an electric equipment disclosed by the present application;

[0027] Fig. 9 is a structural schematic diagram of an energy storage system disclosed by the present application.

[0028] Icon: 100, energy storage device; 10, cabinet body; 11, base; 111, containing groove; 111a, first end; 111b, second end; 112, bottom plate; 113, first side plate; 114, second side plate; 12, first limiting piece; 12a, heat dissipation window; 13, second limiting piece; 131, first bending part; 132, second bending part; 13a, limiting part; 13b, guide part; 13c, mounting part; 14, first connecting piece; 14a, through hole; 14b, third bending part; 141, first connecting part; 142, second connecting part; 15, fastener; 16, fixing piece; 20, heat dissipation module; 21, second connecting piece; 21a, through slot; 30, battery module; 200, electrical equipment; 300, energy storage system; 310, high-voltage cable; 320, first electric energy conversion device; 330, second electric energy conversion device; x, first direction; y, second direction; z, height direction. DETAILED DESCRIPTION

[0029] 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 part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0030] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0031] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. Those of ordinary skill in the art can understand the specific meaning of these terms in the present application according to the specific situation.

[0032] In addition, the terms "mounting", "setting", "provided with", "connection", "connected" should be broadly understood. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. Those of ordinary skill in the art can understand the specific meaning of the above terms in the present application according to the specific situation.

[0033] In addition, the terms "first", "second", and the like are mainly used to distinguish different devices, elements or components (the specific types and structures can be the same or different, and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components). Unless otherwise stated, the meaning of "a plurality" is two or more.

[0034] The following will be described in detail with reference to the accompanying drawings.

[0035] Because the energy required by people has strong time and space, in order to reasonably use energy and improve the utilization rate of energy, it is necessary to store one form of energy into the same or another form of energy through a medium or device, and release it in a specific energy form based on future application needs. At present, the main way of green electricity generation is to develop photovoltaic, wind power and other green energy to replace fossil energy. At present, the generation of green electricity generally depends on photovoltaic, wind power, water potential and the like, and wind energy and solar energy have the problems of strong intermittency and large fluctuation, which will cause the instability of power grid, insufficient electricity at peak electricity consumption, and too much electricity at low electricity consumption. Unstable voltage will also cause damage to electricity, so it may cause "abandoning wind and light" due to insufficient electricity demand or insufficient grid receiving capacity. To solve these problems, it is necessary to rely on energy storage. That is, the electricity is stored in other forms of energy through physical or chemical means, and the energy is released when needed. In simple terms, energy storage is similar to a large "power bank", which stores electricity when photovoltaic and wind energy is sufficient, and releases the stored electricity when needed.

[0036] Taking electrochemical energy storage as an example, the present scheme provides an energy storage device, which is provided with a group of chemical batteries inside. The main purpose is to use chemical elements in the battery as energy storage medium. The charging and discharging process is accompanied by chemical reaction or change of the energy storage medium. In simple terms, the electricity generated by wind and solar energy is stored in the chemical battery, and the stored electricity is released for use when the use of external electricity reaches the peak, or transferred to places where electricity is in short supply for use.

[0037] At present, the application scenarios of energy storage (i.e. energy storage) are relatively wide, including power generation side energy storage, power grid side energy storage and electricity consumption side energy storage, and the corresponding types of energy storage devices include:

[0038] (1) Application in large-scale energy storage power station on the side of wind power and photovoltaic power station, which can assist renewable energy power generation to meet grid connection requirements and improve renewable energy utilization rate; as a high-quality active / reactive power regulation power source in the power supply side, it realizes load matching in time and space, enhances renewable energy consumption capacity, reduces instantaneous power change, reduces impact on the power grid, improves new energy power generation consumption problem and has great significance in power grid system backup, relieving peak load power supply pressure and peak regulation;

[0039] (2) Application in energy storage container on the grid side, the main functions are peak regulation, frequency regulation and relieving grid congestion, which can realize peak clipping and valley filling of power load, i.e. charging energy storage battery when power load is low, and releasing stored power when power load is high, so as to realize the balance between power production and consumption;

[0040] (3) Application in small energy storage cabinet on the power consumption side, the main functions are power self-generation and self-use, peak-valley price difference arbitrage, capacity cost management and improvement of power supply reliability. According to different application scenarios, power consumption side energy storage can be divided into industrial and commercial energy storage cabinet, household energy storage device and energy storage charging pile, etc., which is generally used with distributed photovoltaic. Industrial and commercial users can use energy storage for peak-valley price difference arbitrage and capacity cost management. In the electricity market implementing peak-valley electricity price, through charging energy storage system at low price and discharging energy storage system at high price, peak-valley price difference arbitrage is realized to reduce electricity cost. In addition, industrial enterprises suitable for two-part electricity price can use energy storage system to store energy at low power consumption and discharge at peak load, so as to reduce peak power and maximum demand reported, and achieve the purpose of reducing capacity electricity cost. Household photovoltaic with storage can improve the level of power self-generation and self-use. Due to high electricity price and poor power supply stability, household photovoltaic demand is driven. Considering that photovoltaic generates power in the daytime and users generally have high load at night, through the configuration of energy storage, photovoltaic power can be better utilized to improve the level of self-generation and self-use and reduce electricity cost. In addition, communication base stations, data centers and other fields need to configure energy storage for backup power supply.

[0041] Please refer to FIG. 1 to FIG. 4, an energy storage device 100 provided by the present application includes a cabinet 10 and a heat dissipation module 20. The cabinet 10 includes a base 11, a first limiting piece 12 and a second limiting piece 13. The base 11 has a receiving groove 111, which is arranged along a first direction x. The receiving groove 111 has a first end 111a and a second end 111b opposite to the first end 111a along the first direction x. The receiving groove 111 is used to accommodate the heat dissipation module 20 moving into the receiving groove 111 from the first end 111a to the second end 111b. The first limiting piece 12 is arranged on the base 11 and located at the second end 111b. The first limiting piece 12 is used to abut against one end of the heat dissipation module 20 which is oriented towards the second end 111b. As shown in FIG. 5 and FIG. 6, the second limiting piece 13 includes a limiting part 13a and a guiding part 13b. The limiting part 13a is connected to the first limiting piece 12 and arranged along the first direction x from the first limiting piece 12 to the first end 111a. One side of the limiting part 13a is used to abut against one side of the heat dissipation module 20 along a second direction y. The guiding part 13b is connected to one end of the limiting part 13a which is away from the first limiting piece 12. The guiding part 13b is inclined to the first direction x from the limiting part 13a to the first end 111a and gradually away from the limiting part 13a to provide installation guidance for the heat dissipation module 20 moving into the receiving groove 111 from the first end 111a to the second end 111b and abutting against one side of the limiting part 13a.

[0042] The first direction x and the second direction y are different directions. The first direction x can be the length direction of the heat dissipation module 20, and the second direction y can be the width direction of the heat dissipation module 20, or vice versa. The present embodiment does not make specific limitation on this.

[0043] The number of the second limiting pieces 13 can be one or more. As shown in FIG. 3, the number of the second limiting pieces 13 in the present embodiment is two. The two second limiting pieces 13 are arranged at intervals on the first limiting piece 12. One of the second limiting pieces 13 abuts against one side of the heat dissipation module 20 along the second direction y, and the other second limiting piece 13 abuts against the other side of the heat dissipation module 20 along the second direction y.

[0044] Each battery module 30 includes a single or multiple battery packs (single batteries).

[0045] The first limiting piece 12 is arranged on the base 11, and the first limiting piece 12 is located at the second end 111b of the accommodating groove 111. The first limiting piece 12 abuts against one end of the heat dissipation module 20 which is in the same direction as the second end 111b, so that the heat dissipation module 20 is limited in the first direction x. Meanwhile, the limiting part 13a of the second limiting piece 13 is connected to the first limiting piece 12. The guiding part 13b is connected to one end of the limiting part 13a which is away from the first limiting piece 12. The guiding part 13b extends from the limiting part 13a in the first direction x and gradually away from the limiting part 13a, and is arranged on the side of the limiting part 13a which is used to abut against the heat dissipation module 20. The guiding part 13b can provide installation guidance when the heat dissipation module 20 moves into the accommodating groove 111 from the first end 111a to the second end 111b and abuts against one side of the limiting part 13a. When one side of the heat dissipation module 20 in the second direction y abuts against one side of the limiting part 13a, the limiting part 13a can limit the heat dissipation module 20 in the second direction y. In this way, the position of the heat dissipation module 20 in the accommodating groove 111 is limited in multiple directions, and the heat dissipation module 20 can be accurately installed to the cabinet 10, and the installation precision of the heat dissipation module 20 is high.

[0046] That is, the heat dissipation module 20 is installed to the accommodating groove 111 by the guiding of the guiding part 13b, and can be accurately installed to the position where the two sides of the heat dissipation module 20 respectively abut against the limiting part 13a of the two second limiting pieces 13. The operation difficulty of the installation of the heat dissipation module 20 to the cabinet 10 is reduced, and the installation efficiency is improved.

[0047] Exemplarily, as shown in FIG. 6, the second limiting piece 13 is a sheet metal part. The second limiting piece 13 has a first bending part 131 which is used to form the bending connection between the limiting part 13a and the guiding part 13b.

[0048] In some embodiments, as shown in FIG. 1, the energy storage device 100 further includes a plurality of battery modules 30 which are arranged in the cabinet 10. The heat dissipation module 20 is used to be connected with the battery modules 30 for heat dissipation of the battery modules 30. In this way, the heat dissipation module 20 can be accurately installed to the cabinet 10, the installation precision of the heat dissipation module 20 is high, the accuracy of the connection between the battery modules 30 and the heat dissipation module 20 is high, the stress after installation is small, and the connection failure can be avoided. For example, when the heat dissipation module 20 is a liquid cooling unit, the pipeline for conveying cooling liquid between the liquid cooling unit and the battery modules 30 can be precisely connected. When the heat dissipation module 20 is an air cooling unit, the air duct for conveying air between the air cooling unit and the battery modules 30 can be precisely connected.

[0049] That is, when the heat dissipation module 20 is installed to the cabinet 10, the first limiting piece 12 and the second limiting piece 13 are used for limiting, the heat dissipation module 20 does not need to be adjusted for multiple times and can be accurately installed to the cabinet 10, avoiding the situation that the operation difficulty of the installer is high and the installation efficiency is low due to the multiple adjustments of the position of the heavy heat dissipation module 20. Moreover, the heat dissipation module 20 can be accurately connected with the battery module 30, especially through the pipeline connection to realize cooling and heat dissipation, the pipeline connection position has small stress, high connection reliability, and good sealing performance.

[0050] For the heat dissipation module 20, when the heat dissipation module 20 is placed in the accommodating groove 111, the bottom of the heat dissipation module 20 is supported on the bottom wall of the accommodating groove 111, at this time, the position of the heat dissipation module 20 along the height direction z relative to the cabinet 10 is determined. On this basis, the heat dissipation module 20 is further limited from the second direction y and the first direction x, then the three degrees of freedom of the heat dissipation module 20 in space are limited, and the heat dissipation module 20 can be accurately installed to the cabinet 10.

[0051] Exemplarily, as shown in FIG. 4, the base 11 includes a bottom plate 112, a first side plate 113 and a second side plate 114, the first side plate 113 and the second side plate 114 are spaced apart from the bottom plate 112 along the second direction y, and the bottom plate 112 is used for supporting the heat dissipation module 20 located in the accommodating groove 111.

[0052] In some embodiments, as shown in FIG. 5 and FIG. 6, the second limiting piece 13 further includes a mounting portion 13c, the mounting portion 13c is connected to the first limiting piece 12, and the mounting portion 13c is arranged in extension along the second direction y, one end of the limiting portion 13a away from the guide portion 13b is connected to the mounting portion 13c, and the projection of the mounting portion 13c on the first limiting piece 12 at least partially overlaps the projection of the guide portion 13b on the first limiting piece 12. In this way, by arranging the mounting portion 13c in extension along the second direction y, the mounting portion 13c has a large connection area with the first limiting piece 12, and the connection strength of the first limiting piece 12 and the second limiting piece 13 is improved. Moreover, the projection of the mounting portion 13c on the first limiting piece 12 at least partially overlaps the projection of the guide portion 13b on the first limiting piece 12, which can avoid the interference caused by the abutment of the mounting portion 13c to the heat dissipation module 20 and the first limiting piece 12.

[0053] Exemplarily, the second limiting piece 13 is a sheet metal piece, and the second limiting piece 13 has a second bending portion 132 for forming the limiting portion 13a and the mounting portion 13c of the second limiting piece 13 in bending connection.

[0054] Optionally, the first limiting piece 12 is provided with a heat dissipation window 12a, the heat dissipation window 12a is located between the two second limiting pieces 13, and the heat dissipation window 12a is arranged corresponding to one end of the liquid cooling assembly towards the first limiting piece 12 along the first direction x. In this way, by arranging the heat dissipation window 12a corresponding to one end of the liquid cooling assembly towards the first limiting piece 12 along the first direction x, the situation that the whole surface of the first limiting piece 12 abuts against one end of the liquid cooling assembly and affects the heat dissipation of the heat dissipation module 20 itself can be avoided. Then, the heat generated by the heat dissipation module 20 when cooling the battery module 30 can be dissipated through the heat dissipation window 12a, and the cooling effect is better.

[0055] In some embodiments, as shown in FIGS. 3 and 7, one end of the heat dissipation module 20 towards the same direction as the first end 111a is provided with a second connecting piece 21, and the cabinet 10 further includes a first connecting piece 14, which is arranged on the base 11 and located at the first end 111a. The first connecting piece 14 is detachably connected to the second connecting piece 21. In this way, by detachably connecting the second connecting piece 21 to the first connecting piece 14, the fixing and separation of the heat dissipation module 20 and the cabinet 10 can be realized, which is convenient for the maintenance, replacement, etc. of the heat dissipation module 20.

[0056] For example, the first connecting piece 14 and the second connecting piece 21 are detachably connected by a fastener 15, and the installation direction of the fastener 15 is the same as the first direction x. In this way, by arranging the installation direction of the fastener 15 to be the same as the first direction x, after the heat dissipation module 20 is installed into the accommodating groove 111 of the cabinet 10 along the first direction x, the fastener 15 can be connected with the first connecting piece 14 and the second connecting piece 21 from the side of the heat dissipation module 20 away from the first limiting piece 12 along the first direction x, realizing the detachable connection of the first connecting piece 14 and the second connecting piece 21, which is relatively low in operation difficulty.

[0057] Optionally, as shown in FIG. 7, one of the first connecting piece 14 and the second connecting piece 21 is provided with a through hole 14a, and the other is provided with a through slot 21a, and the through slot 21a extends along the second direction y. The fastener 15 passes through the through slot 21a and is connected with the through hole 14a. In this way, on the one hand, by connecting the fastener 15 with the through hole 14a and the through slot 21a, the first connecting piece 14 and the second connecting piece 21 can be detachably connected. On the other hand, the through slot 21a extends along the second direction y, and the positions of the through slot 21a and the through hole 14a along the second direction y can change with the position of the heat dissipation module 20 relative to the cabinet 10 along the second direction y. Therefore, after the two sides of the heat dissipation module 20 along the second direction y are respectively abutted against the two second limiting pieces 13, the through hole 14a and the through slot 21a can always be connected by the fastener 15.

[0058] The fastener 15 can include a bolt, a screw, a rivet, or a combination of a bolt and a nut, and the like, which can be selected according to the situation, and the embodiment is not specifically limited in this regard.

[0059] In some embodiments, each first connecting piece 14 includes a first connecting portion 141 and a second connecting portion 142. The first connecting portion 141 is arranged on the inner side wall of the accommodating groove 111 along the second direction y, and the first connecting portion 141 is arranged to extend along the first direction x. The second connecting portion 142 is connected to the first connecting portion 141, and the second connecting portion 142 extends away from the inner side wall of the accommodating groove 111 along the second direction y from the first connecting portion 141. The second connecting portion 142 is detachably connected to the second connecting piece 21. In this way, by arranging the first connecting portion 141 in the accommodating groove 111 and extending the second connecting portion 142 along the second direction y, different second connecting portions 142 with different extension lengths can be used according to different width sizes of the heat dissipation module 20, so that the second connecting piece 21 of the heat dissipation module 20 and the second connecting portion 142 can be accurately connected.

[0060] Exemplarily, the first connecting piece 14 is a sheet metal piece, and the first connecting piece 14 has a third bending portion 14b for forming the first connecting portion 141 and the second connecting portion 142 of the first connecting piece 14 in a bent connection.

[0061] Optionally, the first connecting piece 14 is detachably arranged on the base 11. In this way, by detachably arranging the first connecting piece 14 relative to the base 11, when the size of the heat dissipation module 20 along the second direction y is different, different sizes of the first connecting piece 14 can be replaced in time to match the size of the heat dissipation module 20 along the second direction y.

[0062] In some embodiments, as shown in FIG. 3, the cabinet body 10 further includes a fixing piece 16 arranged on the base 11. The fixing piece 16 is located at the first end 111a, and the first connecting piece 14 is arranged on the side of the fixing piece 16 away from the inner side wall of the accommodating groove 111 along the second direction y. In this way, on the one hand, by arranging the fixing piece 16 and arranging the first connecting piece 14 by the fixing piece 16, the first connecting piece 14 can be mounted on the accommodating groove 111. On the other hand, by using the size of the fixing piece 16 along the second direction y, the size of the first connecting piece 14 along the second direction y can be reduced, the structural strength of the first connecting piece 14 is higher, and the first connecting piece 14 is less likely to deform, and the stability of the connection between the second connecting piece 21 of the heat dissipation module 20 and the first connecting piece 14 is higher.

[0063] Furthermore, by fixing the first connecting piece 14 and the accommodating groove 111 by the fixing piece 16, and fixing the heat dissipation module 20 and the first connecting piece 14 by the second connecting piece 21, the heat dissipation module 20 can be fixedly mounted on the accommodating groove 111, and the connection reliability of the heat dissipation module 20 and the cabinet body 10 is improved.

[0064] Exemplarily, the cabinet 10 comprises a plurality of first connecting pieces 14, which are arranged in the accommodating groove 111 in the second direction y, and the heat dissipation module 20 is provided with a plurality of second connecting pieces 21 at the end away from the first limiting piece 12, the plurality of second connecting pieces 21 are arranged in the second direction y, and the plurality of second connecting pieces 21 respectively extend away from the heat dissipation module 20 in the second direction y and are respectively detachably connected with the plurality of first connecting pieces 14. In this way, the heat dissipation module 20 and the cabinet 10 are detachably connected through the plurality of first connecting pieces 14 and the plurality of second connecting pieces 21, and the connection strength is high and the stability is good.

[0065] As shown in FIG. 4, FIG. 4 shows the cooperation of two first connecting pieces 14 and two second connecting pieces 21. In some other embodiments, the number of first connecting pieces 14 and second connecting pieces 21 can also be three, four, five, etc., which is not specifically limited in the embodiment.

[0066] Please refer to FIG. 8, which is a structural schematic diagram of an electric device 200 provided by the present application, the electric device 200 comprising the energy storage device 100 of embodiment two, the energy storage device 100 being used for power supply of the electric device 200.

[0067] Please refer to FIG. 9, which is a structural schematic diagram of an energy storage system 300 provided by the present application, and the embodiment of FIG. 9 of the present application takes the power generation / distribution side shared energy storage scene as an example for illustration, and the energy storage device 100 of the present application is not limited to the power generation / distribution side energy storage scene.

[0068] The present application provides an energy storage system 300, which comprises a high-voltage cable 310, a first electric energy conversion device 320, a second electric energy conversion device 330, and an energy storage device 100 provided by the present application. In the power generation condition, the first electric energy conversion device 320 and the second electric energy conversion device 330 are used for converting other forms of energy into electric energy, connecting with the high-voltage cable 310, and supplying the power distribution network for use. When the electric load is low, the first electric energy conversion device 320 and the second electric energy conversion device 330 generate excess power, which is stored in the energy storage device 100, reducing the rate of abandoned wind and light, and improving the problem of new energy power generation consumption. When the electric load is high, the power grid issues an instruction to transmit the electric energy stored in the energy storage device 100 in the grid-connected mode with the high-voltage cable 310 to supply the power distribution network for use, providing peak shaving, frequency modulation, backup, and other services for the power grid operation, fully playing the role of peak shaving of the power grid, promoting the peak shaving and valley filling of the power grid, and relieving the power supply pressure of the power grid.

[0069] Optionally, the first electric energy conversion device 320 and the second electric energy conversion device 330 can convert at least one of solar energy, light energy, wind energy, heat energy, tidal energy, biomass energy, and mechanical energy into electric energy.

[0070] The number of the energy storage devices 100 can be multiple, the multiple energy storage devices 100 are connected in series or in parallel with each other, and the multiple energy storage devices 100 are supported and electrically connected by an isolation plate (not shown in the figure). In the embodiment, the multiple refers to two or more than two.

[0071] Optionally, the energy storage device 100 can include, but is not limited to, a single battery, a battery module, a battery pack, a battery system, a battery box, a battery cabinet, etc. The actual application form of the energy storage device 100 provided in the embodiment of the application can be, but is not limited to, the listed products, and can also be other application forms. The embodiment of the application does not strictly limit the application form of the energy storage device 100. The embodiment of the application only takes the energy storage device 100 as a multi-core battery as an example for description. When the energy storage device 100 is a single battery, the energy storage device 100 can be at least one of a cylindrical battery, a square battery, etc.

[0072] The energy storage device 100 can be applied in a power grid energy storage scenario. The power grid energy storage scenario can further include a power generation device and a power consumption device; the power generation device can be the first electric energy conversion device 320 or the second electric energy conversion device 330, and the power consumption device can be an object provided by the electric energy transmitted through the high-voltage cable 310, for example, can be a load in an industrial, commercial or household scenario, and the specific limitation is not made. The energy storage device 100 is electrically connected with the power generation device and the power consumption device respectively, the power generated by the power generation device can be supplied to the energy storage device 100 for storage, or supplied to the power consumption device. The power stored by the energy storage device 100 can also be supplied to the power consumption device.

[0073] The battery module disclosed in the application is described in detail above, and the principle and implementation mode of the application are described by applying specific examples in this paper. The above embodiment is only used to help understand the battery module and its core idea of the application; at the same time, for those skilled in the art, according to the idea of the application, the specific implementation mode and application range will be changed, and according to the above, the content of the specification should not be understood as the limitation of the application.

Claims

1. A cabinet body, characterized by, The application is applied to a storage device, which comprises a heat dissipation module and a cabinet body, wherein the cabinet body comprises: a base, the base is provided with a receiving groove extending along a first direction, the receiving groove has a first end and a second end opposite to the first end, and the receiving groove is used for accommodating the heat dissipation module moving into the receiving groove from the first end to the second end; a first limiting piece, the first limiting piece is arranged on the base and located at the second end, and the first limiting piece is used for abutting against one end of the heat dissipation module which is located at the same direction as the second end; and a second limiting piece, the second limiting piece comprises a limiting part and a guiding part, the limiting part is connected to the first limiting piece and extends from the first limiting piece to the first end along the first direction, one side of the limiting part is used for abutting against one side of the heat dissipation module along a second direction, the guiding part is connected to one end of the limiting part which is away from the first limiting piece, the guiding part extends from the limiting part to the first end at an angle with respect to the first direction and gradually moves away from the side of the limiting part which is used for abutting against the heat dissipation module, and the guiding part is used for providing installation guidance for the heat dissipation module moving into the receiving groove from the first end to the second end and abutting against one side of the limiting part.

2. The cabinet of claim 1, wherein, The second limiting piece further comprises a mounting part, the mounting part is connected to the first limiting piece and extends along the second direction, and one end of the limiting part which is away from the guiding part is connected to the mounting part, and the mounting part at least partially overlaps the projection of the guiding part on the first limiting piece.

3. The cabinet of claim 1, wherein, The cabinet body comprises at least two second limiting pieces, and the at least two second limiting pieces are arranged at intervals along the second direction.

4. The cabinet of claim 3, wherein, The first limiting piece is provided with a heat dissipation window, and the heat dissipation window is located between the intervals of the at least two second limiting pieces.

5. The cabinet of any of claims 1 to 4, wherein, The base comprises a bottom plate, a first side plate and a second side plate, the first side plate and the second side plate are arranged at intervals on the bottom plate along the second direction and surround the bottom plate to form the receiving groove, and the bottom plate is used for supporting the heat dissipation module located in the receiving groove.

6. The cabinet of any of claims 1 to 4, wherein, The cabinet body further comprises a first connecting piece, the first connecting piece is arranged on the base and located at the first end, and the first connecting piece is used for detachably connecting to one end of the heat dissipation module which is located at the same direction as the first end.

7. The cabinet of claim 6, wherein, The first connecting piece comprises a first connecting part and a second connecting part, the first connecting part is arranged on the inner side wall of the receiving groove along the second direction, and the first connecting part extends along the first direction, the second connecting part is connected to the first connecting part and extends away from the inner side wall of the receiving groove along the second direction from the first connecting part, and the second connecting part is used for detachably connecting to one end of the heat dissipation module which is located at the same direction as the first end.

8. The cabinet of claim 6, wherein, The first connecting piece is detachably arranged on the base.

9. The cabinet of claim 6, wherein, The cabinet body further comprises a fixing member, the fixing member is arranged on the base, the fixing member is located at the first end, and the first connecting member is arranged on the fixing member and away from the inner side wall of the accommodating groove in the second direction.

10. The cabinet of claim 6, wherein, The cabinet body comprises at least two first connecting members, and the at least two first connecting members are arranged at intervals in the second direction.

11. An energy storage device, characterized by, The cabinet body comprises a heat dissipation module and the cabinet body as claimed in any one of claims 1 to 10, the heat dissipation module is accommodated in the accommodating groove, the first limiting member abuts against one end of the heat dissipation module which is oriented towards the second end, and one side of the limiting part abuts against one side of the heat dissipation module in the second direction.

12. An energy storage device, characterized by The cabinet body comprises a heat dissipation module and the cabinet body as claimed in any one of claims 1 to 5, the heat dissipation module is accommodated in the accommodating groove, the first limiting member abuts against one end of the heat dissipation module which is oriented towards the second end, and one side of the limiting part abuts against one side of the heat dissipation module in the second direction. One end of the heat dissipation module which is oriented towards the first end is provided with a second connecting member, the cabinet body further comprises a first connecting member, the first connecting member is arranged on the base, the first connecting member is located at the first end, and the first connecting member is detachably connected to the second connecting member.

13. The energy storage device of claim 12, wherein, The first connecting member and the second connecting member are detachably connected by a fastener, and the mounting direction of the fastener is the same as the first direction.

14. The energy storage device of claim 13, wherein, One of the first connecting member and the second connecting member is provided with a through hole, and the other is provided with a through groove which extends in the second direction, the fastener passes through the through groove and is connected to the through hole.

15. The energy storage device of any one of claims 12 to 14, wherein, The cabinet body comprises at least two first connecting members, and the at least two first connecting members are arranged at intervals in the second direction, the second connecting member corresponds to the first connecting member, and a plurality of second connecting members are arranged at intervals in the second direction on one end of the heat dissipation module which is oriented towards the second end, so as to be detachably connected to the first connecting member one by one.

16. The energy storage device of any one of claims 11 to 14, wherein, The energy storage device further comprises a plurality of battery modules, the plurality of battery modules are arranged on the cabinet body, and the heat dissipation module is used to be connected to the battery modules for heat dissipation of the battery modules.

17. An electrical device, characterized by The energy storage device as claimed in any one of claims 11 to 14 is used to supply power to the power consumption equipment.

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