Energy storage cabinet and energy storage system

Abstract

The embodiment of the utility model provides an energy storage cabinet and an energy storage system. The energy storage cabinet comprises a battery pack and a cabinet body. The cabinet body comprises a cabinet body main body and an installation guide piece which are connected with each other, and the installation guide piece extends in a first direction; the battery pack comprises a cover plate and a box body, the plane where the end face of the cover plate is located is perpendicular to the horizontal direction, the box body makes contact with the installation guide part, the installation guide part fixes the box body, the length direction of the box body is in the first direction, and the first direction intersects with the horizontal direction. When the battery module is continuously in an overcharge state in the charging process, the sprayed electrolyte flows from the end surface to the tail part along the length direction of the box body under the action of gravity, so that the risk that the electrolyte is gathered at a control panel on the end surface to cause short circuit and fire of a circuit and an electrical element is reduced, and the safety of the energy storage cabinet is further ensured.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage equipment technology, specifically relating to an energy storage cabinet and an energy storage system. Background Technology

[0002] The energy storage cabinet integrates battery modules, battery management devices, and auxiliary equipment. The stored energy can be used as emergency energy, or it can store energy when the grid load is low and output energy when the grid load is high to help with peak shaving and valley filling and reduce grid fluctuations.

[0003] When the battery module is continuously overcharged during the charging process, the electrolyte inside the battery is prone to flow out to various places under high temperature and high pressure conditions, accompanied by gas, by breaking through the explosion-proof valve.

[0004] In related technologies, the electrolyte sprayed from the explosion-proof valve flows from the inner wall of the top of the battery pack to various locations. When the electrolyte flows to the circuit board of the control panel, it can easily cause short circuits in the circuit and electrical components. The sparks from the short circuit can ignite the electrolyte, causing a fire risk and releasing a large amount of toxic gas. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide an energy storage cabinet and energy storage system that can solve the problem of the risk of fire caused by electrolyte spraying in related technologies.

[0006] To solve the above-mentioned technical problems, this utility model is implemented as follows:

[0007] This utility model embodiment provides an energy storage cabinet, including a battery pack and a cabinet body;

[0008] The cabinet includes interconnected cabinet bodies and mounting guides, the mounting guides extending along a first direction;

[0009] The battery pack includes a cover plate and a housing. The plane containing the end face of the cover plate is perpendicular to the horizontal direction. The housing is in contact with the mounting guide, and the mounting guide fixes the housing so that the length direction of the housing is along the first direction, which intersects with the horizontal direction.

[0010] Optionally, the battery pack further includes a mounting plate and a bracket;

[0011] One surface of the mounting plate is connected to the cover plate, and the other opposite surface is connected to the cabinet body. The bracket is connected to the cabinet body and also to the main body of the cabinet.

[0012] Optionally, the main body of the cabinet also includes a first column and a second column;

[0013] The bracket is connected to the first column, and the mounting guide is connected to the second column. The first column and the second column extend in a vertical direction.

[0014] Optionally, the main body of the cabinet also includes a support plate and a top plate;

[0015] The support plate and the top plate are spaced apart, and the first column and the second column are connected between the support plate and the top plate.

[0016] Optionally, the energy storage cabinet may further include copper busbars, and the number of battery packs may be multiple;

[0017] The plurality of battery packs are distributed vertically, and the planes on which the covers of the plurality of battery packs are located are coplanar. The copper busbar has a connecting portion extending vertically, and the connecting portion is connected to the covers of at least two of the battery packs simultaneously.

[0018] Optionally, the housing is provided with a leakage outlet;

[0019] Along the length of the box, one end of the box is connected to the cover plate, and the other end is provided with the leakage port.

[0020] Optionally, the enclosure includes a main body and a shell that are connected to each other;

[0021] The main body of the box is connected to the mounting plate. A vent hole is provided on the main body of the box. A flow guide gap is formed between the box shell and the main body of the box, which communicates with the vent hole.

[0022] Optionally, the angle between the first direction and the horizontal direction is α, where 1°≤α≤5°.

[0023] Optionally, the main body of the cabinet also includes crossbeams;

[0024] The number of first columns is at least two, and the at least two first columns are arranged opposite each other. The crossbeam is connected between the at least two first columns, and the crossbeam is connected to the second column.

[0025] This utility model embodiment also provides an energy storage system, including the energy storage cabinet described in any of the above claims.

[0026] In this embodiment of the invention, the mounting guide is fixedly supported by the cabinet body, and the extension direction of the mounting guide intersects with the horizontal direction, meaning the extension direction of the mounting guide is inclined relative to the horizontal. The end face of the battery pack cover is suitable for mounting the control panel of the battery, and the plane containing its end face is perpendicular to the horizontal direction, meaning the normal of the plane containing the end face of the battery pack cover is along the horizontal direction. The cabinet body is connected to the guide, and the length direction of the cabinet body is consistent with the extension direction of the guide, both along the first direction, meaning the length direction of the cabinet body is inclined relative to the horizontal direction. When the battery module is continuously overcharged during charging, the electrolyte sprayed from the explosion-proof valve flows along the length direction of the cabinet body under the action of gravity, reducing the risk of electrolyte accumulating at the control panel and causing short circuits and fires in the circuit and electrical components, thereby ensuring safety. The end face of the battery pack cover is vertical, which facilitates the installation of the control panel and copper busbars, and also increases the angle between the plane containing the end face of the cover and the length direction of the cabinet body, further preventing electrolyte from accumulating at the control panel of the cover.

[0027] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0029] Figure 1 This is a schematic diagram of the energy storage cabinet provided in an embodiment of the present invention along a certain direction;

[0030] Figure 2 This is a schematic diagram of the energy storage cabinet provided in another direction according to an embodiment of the present invention;

[0031] Figure 3 This is a partial structural schematic diagram of the energy storage cabinet provided in this embodiment of the utility model;

[0032] Figure 4 This is a schematic diagram of the battery pack structure in an embodiment of this utility model;

[0033] Figure 5 This is an embodiment of the present utility model. Figure 4 Schematic diagram along direction A;

[0034] Figure 6 This is an embodiment of the present utility model. Figure 4 Schematic diagram along direction B;

[0035] Figure 7 This is a schematic diagram showing the location of the vent hole in an embodiment of this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1-Battery pack, 11-Cover plate, 12-Box body, 120-Drain outlet, 121-Box body, 1211-Vent hole, 122-Box shell, 13-Mounting plate, 14-Bracket, 2-Cabinet body, 21-Mounting guide, 22-Support plate, 23-Top plate, 24-First column, 25-Second column, 26-Crossbeam, 3-Copper busbar, 31-Connecting part, 4-Cooling fan. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0039] The terms "first," "second," etc., used in the specification and claims of this utility model are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, the first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0040] Please refer to Figures 1 to 3 As illustrated, this utility model embodiment provides an energy storage cabinet, including a battery pack 1 and a cabinet body 2; the cabinet body 2 includes a cabinet main body and an installation guide 21 connected to each other, the installation guide 21 extending along a first direction; the battery pack 1 includes a cover plate 11 and a housing 12, the plane where the end face of the cover plate 11 is located is perpendicular to the horizontal direction, the housing 12 is in contact with the installation guide 21, the installation guide 21 fixes the housing 12 so that the length direction of the housing 12 is along the first direction, the first direction intersects with the horizontal direction.

[0041] Specifically, such as Figure 1 and Figure 2 As shown, the energy storage cabinet includes a battery pack 1 and a cabinet body 2. The main body of the cabinet is used to fix and support the mounting guide 21, which is a guide rail, and is used to install and fix the battery pack 1 in the housing 12. Battery modules are fixed inside the battery pack 1. The extension direction of the mounting guide 21 intersects with the horizontal X-direction, that is, the extension direction of the mounting guide 21 is inclined relative to the horizontal direction. Figure 3 and Figure 4 As shown, the battery pack 1 includes a cover plate 11 and a housing 12. The cover plate 11 is used to install the control panel and related electrical components of the battery. The plane containing the end face of the cover plate 11 is perpendicular to the horizontal direction, that is, the normal of the plane containing the end face of the cover plate 11 is along the horizontal direction. The housing 12 contacts the mounting guide 21, which is used to install and fix the housing 12. The contact surface between the housing 12 and the mounting guide 21 is fixed by screwing, snapping, or riveting. The bottom edge of the housing 12 is arranged along the extension direction of the mounting guide 21, so that the length direction of the housing 12 is consistent with the extension direction of the mounting guide 21, both along the first direction. That is, the length direction of the housing 12 is inclined relative to the horizontal direction X. A bending structure is formed between the housing 12 and the cover plate 11. The angle between the first direction and the horizontal direction X is α, where 1°≤α≤5°. On the one hand, α is greater than 1° to ensure that there is a certain angle between the length direction of the box 12 and the horizontal X direction, which is conducive to the electrolyte flowing along the length direction of the box 12 under the action of gravity. On the other hand, α is less than 5° because the angle of the bending structure formed between the box 12 and the cover plate 11 should not be too large to increase the space occupied, and a certain assembly error needs to be considered to increase the angle design value. The horizontal X-direction is perpendicular to the plane containing the end face of cover plate 11, meaning the end face of cover plate 11 is vertical. This facilitates the installation of the control panel and copper busbar on the end face of cover plate 11, and also increases the angle between the plane containing the end face of cover plate 11 and the length direction of the housing 12. This is because when the normal of the plane containing the end face of cover plate 11 is along the first direction, the angle between the end face of cover plate 11 and the length direction of the housing 12 is 90°, while when the normal of the plane containing the end face of cover plate 11 is along the horizontal direction, the angle between the end face of cover plate 11 and the length direction of the housing 12 is greater than 90°, further preventing electrolyte accumulation at the control panel on the end face of cover plate 11. It should be noted that, as Figure 1 As shown, in this embodiment, the X, Y, and Z directions are perpendicular to each other, forming the three axes of a rectangular coordinate system. The X and Y directions form a horizontal plane, the X direction is the length direction of the cabinet, the Y direction is the width direction of the cabinet, and the Z direction is along the vertical direction, which is also the height direction of the cabinet.

[0042] The energy storage cabinet provided in this embodiment of the invention, guided by the installation guide, has its length direction intersecting the horizontal direction, meaning the length direction of the cabinet is inclined relative to the horizontal direction. When the battery module is continuously overcharged during charging, the electrolyte sprayed from the explosion-proof valve will flow from the end to the tail end along the length direction of the cabinet under the action of gravity, reducing the risk of electrolyte accumulating at the control panel on the end face and causing short circuits and fires in the circuits and electrical components, thereby ensuring safety.

[0043] In one implementation method, please refer to Figures 3 to 5As shown in the diagram, the battery pack 1 also includes a mounting plate 13 and a bracket 14; one surface of the mounting plate 13 is connected to the cover plate 11, and the other opposite surface is connected to the housing 12; the bracket 14 is connected to the housing 12 and to the main body of the cabinet.

[0044] Specifically, such as Figures 3 to 5 As shown, due to the bent structure between the housing 12 and the cover plate 11 in this embodiment, a mounting plate 13 is connected between the housing 12 and the cover plate 11 to facilitate assembly, connection, and angle adjustment. The mounting plate 13 is fixed to the housing 12 and the cover plate 11 by screws or welding. One side of the bracket 14 is connected to the housing 12, and the other side is connected to the cabinet body, fixing the housing 12 to the cabinet body, improving the stability of the housing 12 and preventing shaking or displacement during use. The bracket 14 is connected to the housing 12 and the cabinet body by screws or welding.

[0045] In one implementation method, please refer to Figure 1 and Figure 3 As shown in the diagram, the main body of the cabinet includes a first column 24 and a second column 25; the bracket 14 is connected to the first column 24, and the mounting guide 21 is connected to the second column 25. The first column 24 and the second column 25 extend in the vertical direction.

[0046] Specifically, such as Figure 1 and Figure 3 As shown, the first column 24 and the second column 25 extend vertically in the Z direction, serving to support and fix the battery pack. The bracket 14 is connected to the first column 24 by screwing or welding to enhance the stability of the housing 12. The mounting guide 21 is connected to the second column 25 by screwing or welding to enhance the stability of the mounting guide 21.

[0047] In one implementation method, please refer to Figure 1 and Figure 3 As illustrated, the main body of the cabinet also includes a support plate 22 and a top plate 23; the support plate 22 and the top plate 23 are spaced apart, and the first column 24 and the second column 25 are connected between the support plate 22 and the top plate 23.

[0048] Specifically, such as Figure 1 and Figure 3 As shown, the main body of the cabinet is a frame structure, including a support plate 22, a top plate 23, a first column 24, and a second column 25. The plane containing the support plate 22 and the top plate 23 is parallel to the plane formed by the X and Y directions. Along the Z direction, the lower ends of the first column 24 and the second column 25 are fixed to the support plate 22, and the upper ends are fixed to the top plate 23.

[0049] In one implementation method, please refer to Figures 1 to 3As illustrated, the energy storage cabinet also includes a copper busbar 3 and multiple battery packs 1; the multiple battery packs 1 are distributed in a vertical direction, and the planes on which the cover plates 11 of the multiple battery packs 1 are located are coplanar. The copper busbar 3 has a connecting part 31 extending in a vertical direction, and the connecting part 31 is connected to the cover plates 11 of at least two battery packs 1 at the same time.

[0050] Specifically, such as Figures 1 to 3 As shown, multiple battery packs 1 are distributed along the vertical Z-direction. Since the normal direction of the plane containing the cover plate 11 of each battery pack 1 is along the horizontal X-direction, the planes containing the cover plates 11 of each battery pack 1 are coplanar. Therefore, it is convenient for the connecting portion 31 of the copper busbar 3 to be installed vertically between the cover plates 11 of at least two battery packs 1. In related technologies, when the cover plates 11 of different battery packs 1 are not coplanar, the connecting portion 31 of the copper busbar 3 needs to be configured with a bending structure corresponding to the cover plate 11 of the battery pack 1, which increases the installation difficulty and material cost. Therefore, in this embodiment, when the cover plates 11 of different battery packs 1 are coplanar, it is convenient to install the vertical copper busbar 3, reducing the installation difficulty and material cost.

[0051] In one implementation method, please refer to Figure 4 As shown in the diagram, the box body 12 has a drain outlet 120; along the length of the box body 12, one end of the box body 12 is connected to the cover plate 11, and the other end has a drain outlet 120.

[0052] Specifically, such as Figure 4 As shown, along the length of the housing 12, one end of the housing 12 is connected to the cover plate 11, and the other end has a drain outlet 120, which is located at the lower end of the housing 12 in the vertical Z direction. When the battery module is continuously overcharged during charging, the electrolyte sprayed from the explosion-proof valve will flow from one end to the other along the length of the housing 12 under the action of gravity, and finally flow out from the drain outlet 120. This prevents the electrolyte from accumulating at the control panel and causing short circuits and fires in the circuits and electrical components, further ensuring safety. The shape of the drain outlet 120 can be circular, triangular, or polygonal; this embodiment does not limit this.

[0053] In one implementation method, please refer to Figure 6 and Figure 7 As shown in the diagram, the box body 12 includes a box body 121 and a box shell 122 connected to each other; the box body 121 is connected to the mounting plate 13, and a vent hole 1211 is provided on the box body 121. A flow guide gap is formed between the box shell 122 and the box body 121, which communicates with the vent hole 1211.

[0054] Specifically, such as Figure 6 and Figure 7 As shown, where, Figure 7This is a schematic diagram of the structure of the housing 12 after removing the outer shell 122. The main body 121 of the housing is fixedly connected to the mounting plate 13. A vent hole 1211 is provided on the side of the main body 121. The outer shell 122 is fastened to the main body 121. There is a flow guiding gap between the inner wall of the outer shell 122 and the outer wall of the main body 121. This flow guiding gap is connected to the vent hole 1211. On the one hand, after the electrolyte accompanied by the heat-insulating high-pressure gas is sprayed out from the vent hole 1211, the flow guiding gap provides space for the electrolyte to flow, avoiding the electrolyte from accumulating in a local position. On the other hand, the fastening connection between the outer shell 122 and the main body 121 covers the vent hole 1211, preventing the vent hole 1211 from directly connecting to the outside and reducing the airtightness of the battery pack.

[0055] In one implementation method, please refer to Figure 6 As illustrated, the energy storage cabinet also includes a cooling fan 4; the cooling fan 4 is connected to the end of the enclosure 12 away from the cover plate 11.

[0056] Specifically, such as Figure 6 As shown, the cooling fan 4 is connected to the end of the housing 12 away from the cover plate 11, that is, the cooling fan 4 is located at the tail end of the housing 12 along the length direction, which facilitates heat dissipation and cooling of the battery pack during operation, so that the temperature of the battery pack is within the safe operating temperature range.

[0057] In one implementation method, please refer to Figure 1 and Figure 2 As shown in the diagram, the main body of the cabinet also includes a crossbeam 26; the number of first columns 24 is at least two, the at least two first columns 24 are arranged opposite each other, the crossbeam 26 is connected between the at least two first columns 24, and the crossbeam 26 is connected to the second column 25.

[0058] Specifically, such as Figure 1 and Figure 2 As shown, the crossbeam 26 extends horizontally in the X direction. At least two first columns 24 are arranged opposite each other. In this embodiment, a first column 24 is provided at each of the four corners of the support plate 22 and the top plate 23. A crossbeam 26 connects at least two first columns 24, and the crossbeam 26 is fixedly connected to the second column 25. Therefore, the crossbeam 26 connects the first column 24 and the second column 25, improving the structural stability of the cabinet body and reliably fixing the battery pack 1.

[0059] This utility model embodiment also provides an energy storage system, including the energy storage cabinet of any of the foregoing embodiments. When the battery module is continuously overcharged during the charging process, it is beneficial to drain the electrolyte, reducing the risk of electrolyte accumulation at the control panel causing short circuits and fires in circuits and electrical components, thereby ensuring the safety of the energy storage cabinet and energy storage system.

[0060] 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 invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0061] The terms "first" and "second" in the specification and claims of this utility model may explicitly or implicitly include one or at least two of the features. In the description of this utility model, unless otherwise stated, "at least two" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0062] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "left", "right", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0063] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0064] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An energy storage cabinet, characterized in that, Includes a battery pack (1) and a cabinet (2); The cabinet (2) includes interconnected cabinet bodies and mounting guides (21), the mounting guides (21) extending along a first direction; The battery pack (1) includes a cover plate (11) and a housing (12). The plane on which the end face of the cover plate (11) is located is perpendicular to the horizontal direction. The housing (12) is in contact with the mounting guide (21). The mounting guide (21) fixes the housing (12) so that the length direction of the housing (12) is along the first direction, which intersects with the horizontal direction.

2. The energy storage cabinet according to claim 1, characterized in that, The battery pack (1) also includes a mounting plate (13) and a bracket (14); One surface of the mounting plate (13) is connected to the cover plate (11), and the other opposite surface is connected to the box body (12). The bracket (14) is connected to the box body (12) and to the main body of the cabinet.

3. The energy storage cabinet according to claim 2, characterized in that, The main body of the cabinet also includes a first column (24) and a second column (25); The bracket (14) is connected to the first column (24), the mounting guide (21) is connected to the second column (25), and the first column (24) and the second column (25) extend in the vertical direction.

4. The energy storage cabinet according to claim 3, characterized in that, The main body of the cabinet also includes a support plate (22) and a top plate (23); The support plate (22) and the top plate (23) are spaced apart, and the first column (24) and the second column (25) are connected between the support plate (22) and the top plate (23).

5. The energy storage cabinet according to claim 1, characterized in that, The energy storage cabinet also includes copper busbars (3), and the number of battery packs (1) is multiple; Multiple battery packs (1) are distributed in a vertical direction, and the planes on which the cover plates (11) of the multiple battery packs (1) are located are coplanar. The copper busbar (3) has a connecting part (31) extending in a vertical direction, and the connecting part (31) is connected to the cover plates (11) of at least two battery packs (1) at the same time.

6. The energy storage cabinet according to claim 1, characterized in that, The box (12) is provided with a leakage port (120); Along the length of the box (12), one end of the box (12) is connected to the cover plate (11), and the other end is provided with the leakage port (120).

7. The energy storage cabinet according to claim 2, characterized in that, The box (12) includes a box body (121) and a box shell (122) that are connected to each other; The main body of the box (121) is connected to the mounting plate (13). A vent hole (1211) is provided on the main body of the box (121). A flow guide gap is formed between the box shell (122) and the main body of the box (121) and communicates with the vent hole (1211).

8. The energy storage cabinet according to claim 1, characterized in that, The angle between the first direction and the horizontal direction is α, where 1°≤α≤5°.

9. The energy storage cabinet according to claim 3, characterized in that, The main body of the cabinet also includes a crossbeam (26); The number of first columns (24) is at least two, and the at least two first columns (24) are arranged opposite each other. The crossbeam (26) is connected between the at least two first columns (24), and the crossbeam (26) is connected to the second column (25).

10. An energy storage system, characterized in that, Includes the energy storage cabinet as described in any one of claims 1-9.

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