Battery rack, battery cluster and battery energy storage system

Abstract

The utility model relates to the technical field of batteries, and provides a battery rack, a battery cluster and a battery energy storage system. The battery rack comprises a top frame, a bottom frame and a side frame, wherein the bottom frame and the top frame are arranged at an interval. The side frame is connected between the top frame and the bottom frame, and the side frame is configured to install the battery module. Wherein a reinforcing part is connected in the bottom frame, in the first direction, the two sides of the reinforcing part are connected with the two opposite sides of the bottom frame respectively, and in the second direction, the two sides of the reinforcing part are connected with the two opposite sides of the bottom frame through bottom cross beams respectively. Wherein the first direction is perpendicular to the second direction. Therefore, the bottom frame can be structurally reinforced by using the reinforcer, so that the overall structural strength of the battery rack is improved, and the technical problem that the structural strength of the battery rack is insufficient is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a battery rack, a battery cluster and a battery energy storage system. Background Art

[0002] In the related art, the battery rack is usually welded into the prefabricated cabin of the battery energy storage system, and then the battery module is inserted into the battery rack of the prefabricated cabin. If the battery rack is separated from the prefabricated cabin, the strength of the battery rack will not meet the use requirements, making the battery rack unable to be sold or displayed separately. Utility Model Content

[0003] The embodiments of the utility model provide a battery rack, a battery cluster and a battery energy storage system, which can improve the technical problem of insufficient structural strength of the battery rack.

[0004] In a first aspect, an embodiment of the present utility model provides a battery rack, comprising:

[0005] Top frame;

[0006] A bottom frame, spaced apart from the top frame;

[0007] a side frame connected between the top frame and the bottom frame, the side frame being configured to mount a battery module;

[0008] A reinforcement is connected inside the bottom frame, and in a first direction, two sides of the reinforcement are respectively connected to opposite sides of the bottom frame, and in a second direction, two sides of the reinforcement are respectively connected to opposite sides of the bottom frame through a bottom cross beam, wherein the first direction is perpendicular to the second direction.

[0009] In one embodiment, the bottom frame comprises:

[0010] two bottom side beams, each of the bottom side beams extending along the first direction;

[0011] two bottom side beams, each of the bottom side beams extending along the second direction;

[0012] Among them, the end of each bottom side beam is connected to the end of the corresponding bottom side beam through the bottom angle piece, so that the two bottom side beams and the two bottom side beams are combined to form a square bottom frame. In the first direction, the two sides of the reinforcement are respectively connected to the two bottom side beams, and in the second direction, the two sides of the reinforcement are respectively connected to the two bottom side beams through the bottom cross beam.

[0013] In one embodiment, the reinforcement comprises:

[0014] a first reinforcement plate;

[0015] a second reinforcing plate, spaced apart from the first reinforcing plate;

[0016] a third reinforcing plate, connected between the first reinforcing plate and the second reinforcing plate;

[0017] Wherein, in the first direction, two sides of the third reinforcing plate are respectively connected to the two bottom edge beams, and in the second direction, two sides of the third reinforcing plate are respectively connected to the two bottom side beams through the bottom cross beam.

[0018] In one embodiment, the bottom frame further includes:

[0019] Two bottom plates, in the first direction, two sides of each bottom plate are respectively connected to the two bottom side beams, in the second direction, the two bottom plates are respectively connected to two sides of the third reinforcing plate, and each bottom plate is respectively connected to the corresponding bottom side beam, in the third direction, the two bottom plates are both located between the bottom cross beam and the second reinforcing plate;

[0020] Wherein, the third direction is perpendicular to the first direction and the second direction, each of the bottom plates is connected to a bottom reinforcement plate, and the bottom reinforcement plate is connected to the bottom angle piece.

[0021] In one embodiment, the bottom frame further includes:

[0022] A mounting member is connected to the bottom cross beam and / or the bottom side beam, and the mounting member is configured to mount an electrical component.

[0023] In one embodiment, the two bottom side beams are both constructed with equipotential connection parts, and in the first direction, the two equipotential connection parts are far away from each other, and in the second direction, each of the equipotential connection parts is arranged far away from the bottom side beam.

[0024] In one embodiment, the top frame comprises:

[0025] two top side beams, each of the top side beams extending along the first direction;

[0026] two top side beams, each of the top side beams extending along the second direction;

[0027] A top plate connected to the two top side beams and the two top edge beams;

[0028] Among them, the end of each top side beam is connected to the end of the corresponding top side beam through a top corner piece, so that the two top side beams and the two top side beams are combined to form a square top frame, and a top reinforcement plate is connected to the top plate, and the top reinforcement plate is connected to the top corner piece.

[0029] In one embodiment, the top corner piece and / or the bottom corner piece are both configured with hanging holes.

[0030] In one embodiment, the side frames are provided in two numbers, and the two side frames are spaced apart along the second direction, wherein each of the side frames comprises:

[0031] Two columns, each of which is connected between the corresponding bottom corner piece and the top corner piece;

[0032] Two side vertical beams are arranged between the two columns at intervals, each of the side vertical beams is connected to a first side diagonal beam and a second side diagonal beam, the first side diagonal beam is connected to the bottom corner piece, and the second side diagonal beam is connected to the top corner piece;

[0033] The side cross beam is connected between the two side vertical beams, and / or is connected between the side cross beam and the adjacent column, and / or is connected between the side cross beam and the adjacent first side diagonal beam, and / or is connected between the side cross beam and the adjacent second side diagonal beam.

[0034] In one embodiment, the side frame is configured with a support member for mounting a battery module, and the support member includes:

[0035] A limiting portion connected to the side frame;

[0036] A support portion, connected at an angle to a side of the limiting portion away from the side frame;

[0037] The first end of the support portion is configured with a connection hole, the connection hole is configured to lock the battery module through a fastener, and the second end of the support portion is configured with a limit plate, the limit plate is configured to abut the battery module;

[0038] Wherein, along the direction from the first end to the second end, the limiting portion has a tapered section bent in a direction away from the side frame.

[0039] In one embodiment, the outer surfaces of the battery racks are coated with an anti-corrosion layer.

[0040] In one embodiment, the anti-corrosion layer includes a zinc-rich primer layer, an epoxy paint layer, and a polyurethane layer stacked from inside to outside.

[0041] In a second aspect, an embodiment of the present utility model provides a battery cluster, comprising:

[0042] Battery modules;

[0043] As the aforementioned battery rack;

[0044] Wherein, the battery module is installed in the battery rack.

[0045] In a third aspect, an embodiment of the present utility model provides a battery energy storage system, comprising the aforementioned battery cluster.

[0046] Beneficial effects of the embodiments of the utility model:

[0047] In the embodiment of the utility model, a battery rack is formed by a top frame, a bottom frame and a side frame to place a battery module. A reinforcement is arranged in the bottom frame, so that the reinforcement passes through the bottom frame in a first direction and is connected to the bottom frame through a bottom cross beam in a second direction. The reinforcement can be used to strengthen the bottom frame to improve the overall structural strength of the battery rack, thereby improving the technical problem of insufficient structural strength of the battery rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0049] Figure 1 It is a three-dimensional structural schematic diagram of a battery rack provided by an embodiment of the utility model;

[0050] Figure 2 It is a schematic diagram of the exploded structure of a battery rack provided in an embodiment of the utility model;

[0051] Figure 3 It is a three-dimensional structural schematic diagram of a support member provided in an embodiment of the utility model;

[0052] Figure 4 It is a schematic diagram of the three-dimensional structure of a battery cluster provided in an embodiment of the utility model.

[0053] Reference numerals:

[0054] 10-top frame, 110-top side beam, 120-top side beam, 130-top angle piece, 140-top cross beam, 150-top plate, 160-top reinforcement plate, 20-bottom frame, 210-bottom side beam, 220-bottom side beam, 230-bottom angle piece, 240-bottom cross beam, 250-bottom plate, 260-bottom reinforcement plate, 270-mounting piece, 280-equipotential connection part, 30-side frame, 310- Column, 320-side vertical beam, 330-first side oblique beam, 340-second side oblique beam, 350-side cross beam, 40-reinforcement, 410-first reinforcement plate, 420-second reinforcement plate, 430-third reinforcement plate, 50-hanging hole, 60-support member, 610-limiting part, 620-support part, 630-connecting hole, 640-limiting plate, 650-tapered section, 70-battery module. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0056] For details, please refer to Figures 1 to 4 , an embodiment of the utility model provides a battery rack. The battery rack includes a top frame 10, a bottom frame 20 and a side frame 30. The bottom frame 20 is spaced apart from the top frame 10. The side frame 30 is connected between the top frame 10 and the bottom frame 20, and the side frame 30 is configured to install a battery module 70. A reinforcement member 40 is connected to the bottom frame 20, and in a first direction, both sides of the reinforcement member 40 are respectively connected to opposite sides of the bottom frame 20, and in a second direction, both sides of the reinforcement member 40 are respectively connected to opposite sides of the bottom frame 20 through a bottom cross beam 240. The first direction is perpendicular to the second direction.

[0057] In some embodiments, a battery rack is formed by a top frame 10, a bottom frame 20 and a side frame 30 to place a battery module 70. A reinforcement member 40 is arranged in the bottom frame 20, so that the reinforcement member 40 penetrates the bottom frame 20 in a first direction, and the reinforcement member 40 is connected to the bottom frame 20 through a bottom cross beam 240 in a second direction. The reinforcement member 40 can be used to reinforce the bottom frame 20 to improve the overall structural strength of the battery rack, thereby improving the technical problem of insufficient structural strength of the battery rack.

[0058] It is understandable that when the bottom frame 20 is subjected to an external force from a first direction, the reinforcement member 40 can directly support the bottom frame 20, thereby resisting the external force from the first direction and preventing the bottom frame 20 from being deformed by the external force from the first direction. When the bottom frame 20 is subjected to an external force from a second direction, the reinforcement member 40 can support the bottom frame 20 through the bottom cross beam 240, thereby resisting the external force from the second direction and preventing the bottom frame 20 from being deformed by the external force from the second direction.

[0059] The battery rack based on the above structure has sufficient strength, so the battery rack can be hoisted, stacked and transported as a whole. As a result, the battery rack level can be shipped, sold and displayed. When the battery module 70 is installed in the battery rack to form a battery cluster, the battery cluster level can also be shipped, sold and displayed, which broadens the sales types.

[0060] The first direction may be a length direction of the battery rack, the second direction may be a width direction of the battery rack, and the third direction described below may be a height direction of the battery rack.

[0061] like Figure 2 As shown, in some embodiments, the bottom frame 20 includes two bottom side beams 210 and two bottom side beams 220. Each bottom side beam 210 extends along a first direction. Each bottom side beam 220 extends along a second direction. Wherein, the end of each bottom side beam 210 is connected to the end of the corresponding bottom side beam 220 through a bottom angle piece 230, so that the two bottom side beams 210 and the two bottom side beams 220 are enclosed to form a bottom frame 20 in a direction. In the first direction, both sides of the reinforcement member 40 are respectively connected to the two bottom side beams 220. In the second direction, both sides of the reinforcement member 40 are respectively connected to the two bottom side beams 210 through a bottom cross beam 240.

[0062] The two bottom side beams 210 and the two bottom edge beams 220 are connected by four bottom corner pieces 230 to form a square bottom frame 20. The two bottom side beams 210 and the two bottom edge beams 220 are structurally reinforced by the reinforcement piece 40, thereby improving the structural strength of the bottom frame 20 and improving the anti-deformation ability of the bottom frame 20.

[0063] It is understandable that, since the reinforcement 40 can directly connect the two bottom side beams 220 in the first direction, when the bottom side beams 220 are subjected to external force, the reinforcement 40 can resist the deformation of the bottom side beams 220 caused by the external force, so as to improve the structural strength and anti-deformation capability of the bottom side beams 220. Similarly, since the reinforcement 40 is connected to the two bottom side beams 210 through the bottom cross beam 240 in the second direction, when the bottom side beams 210 are subjected to external force, the reinforcement 40 can resist the deformation of the bottom side beams 210 caused by the external force, so as to improve the structural strength and anti-deformation capability of the bottom side beams 210.

[0064] Please continue reading Figure 2 In some embodiments, the reinforcement member 40 includes a first reinforcement plate 410, a second reinforcement plate 420, and a third reinforcement plate 430. The second reinforcement plate 420 is spaced apart from the first reinforcement plate 410. The third reinforcement plate 430 is connected between the first reinforcement plate 410 and the second reinforcement plate 420. In the first direction, both sides of the third reinforcement plate 430 are respectively connected to the two bottom side beams 220. In the second direction, both sides of the third reinforcement plate 430 are respectively connected to the two bottom side beams 210 through the bottom cross beam 240.

[0065] Specifically, the reinforcement 40 is an I-beam. By allowing the I-beam to penetrate the bottom frame 20 in the length direction and connect the bottom frame 20 in the width direction through the bottom cross beam 240, the structural strength and mechanical strength of the bottom of the battery rack can be improved. When the battery rack is lifted, the I-beam can ensure that the bottom of the battery rack is not prone to flexible bending deformation. Ensure that the battery rack as a whole does not undergo local deformation during and after lifting. And ensure that the battery rack can maintain good structural stability under the long-term gravity static load, vibration operating load, and overall transportation operating load of the battery module 70.

[0066] The first reinforcing plate 410 , the second reinforcing plate 420 and the third reinforcing plate 430 may be formed by welding.

[0067] The upper surface of the first reinforcing plate 410 can also be used to install electrical components, thereby improving the functionality of the I-beam and making full use of the space of the battery rack to improve the space utilization rate of the battery rack.

[0068] like Figure 1 As shown, the I-beam is installed in the bottom frame 20 in an "I" shape. In other embodiments of the utility model, the I-beam can also be installed in the bottom frame 20 in an "H" shape, so that the I-beam can penetrate the bottom frame 20 in the first direction, and the I-beam can be connected to the bottom frame 20 through the bottom cross beam 240 in the second direction.

[0069] Please continue reading Figure 2 In some embodiments, the bottom frame 20 further includes two bottom plates 250. In the first direction, two sides of each bottom plate 250 are respectively connected to two bottom side beams 220. In the second direction, the two bottom plates 250 are respectively connected to two sides of the third reinforcing plate 430, and each bottom plate 250 is respectively connected to the corresponding bottom side beam 210. In the third direction, the two bottom plates 250 are both located between the bottom cross beam 240 and the second reinforcing plate 420. The third direction is perpendicular to the first direction and the second direction, and each bottom plate 250 is connected to a bottom reinforcing plate 260, which is connected to the bottom angle piece 230.

[0070] A bottom plate 250 is provided at the bottom of the bottom frame 20 to close the upper surface of the bottom frame 20. The bottom reinforcing plate 260 is provided on the bottom plate 250 and connected to the bottom angle piece 230, so that the bottom reinforcing plate 260 can play a structural reinforcement effect. In particular, when the battery rack is hoisted as a whole, the bottom reinforcing plate 260 can ensure that the bottom frame 20 does not undergo flexible bending deformation.

[0071] It is understandable that in the length direction, the two sides of the bottom plate 250 are respectively welded to the bottom side beams 220, so the bottom plate 250 can play a certain supporting effect on the bottom frame 20 in the length direction. In the width direction, the two sides of the bottom plate 250 are respectively connected to the bottom side beams 210, so the bottom plate 250 can also play a certain supporting effect on the bottom frame 20 in the width direction. Therefore, the bottom frame 20 can be structurally reinforced by the bottom plate 250 to improve the deformation resistance of the bottom frame 20. Based on the fact that the bottom plate 250 is located between the second reinforcing plate 420 and the bottom cross beam 240 in the height direction, the second reinforcing plate 420 is a plate contacting the ground, and the first reinforcing plate 410, the second reinforcing plate 420 and the third reinforcing plate 430 can form an I-beam structure, which can make the battery rack reliably and stably fixed to the ground.

[0072] like Figure 2 As shown, each bottom plate 250 is a whole plate. In other embodiments of the present invention, the bottom plate 250 may be a plurality of plate members connected in a split manner, and the plurality of plate members may be welded to form the bottom plate 250. For example, the bottom plate 250 includes a middle plate and end plates located on both sides of the middle plate, and the two end plates are respectively welded to opposite sides of the middle plate.

[0073] Wherein, avoidance gaps are constructed on both the bottom plate 250 and the bottom reinforcing plate 260 , and the avoidance gaps are used to connect the bottom angle piece 230 , so as to form a connection between the bottom plate 250 , the bottom reinforcing plate 260 and the bottom angle piece 230 .

[0074] Since there are four bottom corner pieces 230 , four bottom reinforcing plates 260 are also provided, and the four bottom reinforcing plates 260 are respectively located at the four corners of the square bottom frame 20 .

[0075] Please continue reading Figure 2 In some embodiments, the bottom frame 20 further includes a mounting member 270. The mounting member 270 is connected to the bottom cross beam 240 and / or the bottom side beam 210, and the mounting member 270 is configured to mount an electrical component.

[0076] By providing the mounting member 270 on the bottom frame 20 to connect the electrical components, the space utilization rate of the battery rack near the bottom frame 20 can be improved. The space of the battery rack can be fully utilized to avoid installing the electrical components of the battery rack at other positions of the prefabricated cabin.

[0077] The mounting member 270 may include a plurality of mounting rails, and the electrical component may be mounted on the mounting rails by fasteners or welded to the mounting rails. When the electrical component is mounted, the mounting rails may play a guiding and limiting role. When the electrical component slides to a preset position, the electrical component may be fixed to the mounting rails by fasteners or welding.

[0078] Based on welding mounting rails on the bottom cross beam 240 and the bottom side beam 210, and cooperating with the reinforcement 40 to divide the space of the bottom frame 20, a plurality of mounting rails can form 6 mounting spaces on the bottom frame 20, which are respectively used to install electrical components, thereby improving the space utilization of the battery rack.

[0079] The electrical components referred to in the embodiment of the utility model include electrical components or functional devices required by the battery cluster. Thus, the functions of the battery cluster are realized or expanded. In addition, the electrical components also include other battery modules 70 of different sizes and models from the aforementioned battery modules 70. Thus, the overall energy of the battery cluster can be improved.

[0080] like Figure 1 As shown, in some embodiments, both bottom side beams 210 are configured with equipotential connection parts 280. In the first direction, the two equipotential connection parts 280 are away from each other. In the second direction, each equipotential connection part 280 is arranged away from the bottom side beam 220.

[0081] By providing equipotential connection parts 280 on both bottom side beams 210, one equipotential connection part 280 is equipotentially connected to the battery module 70, and the other equipotential connection part 280 is equipotentially connected to related electrical components, thereby ensuring the electrical safety of the battery rack as a whole.

[0082] In the first direction, the two equipotential connection parts 280 are far away from each other, and in the second direction, each equipotential connection part 280 is arranged away from the bottom side beam 220. The two equipotential connection parts 280 are diagonally distributed on the bottom frame 20. Based on the two diagonally distributed equipotential connection parts 280, the battery rack can simultaneously take into account the equipotential connection of the battery module 70 and the electrical module.

[0083] like Figure 1 As shown, the equipotential connection part 280 can be installed on the bottom side beam 210 by fasteners. In other embodiments of the present application, the equipotential connection part 280 can also be fixed to the bottom side beam 210 by welding.

[0084] like Figure 2 As shown, in some embodiments, the top frame 10 includes two top side beams 110, two top side beams 120 and a top plate 150. Each top side beam 110 extends along a first direction. Each top side beam 120 extends along a second direction. The top plate 150 is connected to the two top side beams 110 and the two top side beams 120. The ends of each top side beam 110 are connected to the ends of the corresponding top side beams 120 through the top corner pieces 130, so that the two top side beams 110 and the two top side beams 120 are enclosed to form a square top frame 10, and a top reinforcing plate 160 is connected to the top plate 150, and the top reinforcing plate 160 is connected to the top corner pieces 130.

[0085] Two top side beams 110 and two top edge beams 120 are connected by four top corner pieces 130 to form a square top frame 10. A top plate 150 is arranged on the top of the top frame 10 to close the upper surface of the top frame 10. Based on the top reinforcing plate 160 being arranged on the top plate 150 and connected to the top corner piece 130, the top reinforcing plate 160 can play a structural reinforcement effect. In particular, when the battery rack is hoisted as a whole, the top reinforcing plate 160 can ensure that the top frame 10 does not undergo flexible bending deformation.

[0086] It is understandable that in the length direction, the two sides of the top plate 150 are respectively welded to the top side beams 120, so that the top plate 150 can play a certain supporting effect on the top frame 10 in the length direction. In the width direction, the two sides of the top plate 150 are respectively connected to the top side beams 110, so that the top plate 150 can also play a certain supporting effect on the top frame 10 in the width direction. Therefore, the top plate 150 can be used to strengthen the structure of the top frame 10 and improve the deformation resistance of the top frame 10.

[0087] In order to further ensure the structural strength of the top frame 10 , a plurality of top cross beams 140 are connected between the two top side beams 110 , and the plurality of top cross beams 140 are spaced apart along the first direction.

[0088] like Figure 2 As shown, the top plate 150 may be a plurality of plate members connected in a split manner, and the plurality of plate members may be welded to form the top plate 150. For example, the top plate 150 includes a middle plate and end plates located on both sides of the middle plate, and the two end plates are welded to opposite sides of the middle plate, respectively. In other embodiments of the present invention, the top plate 150 may also be a whole plate.

[0089] Wherein, avoidance gaps are constructed on both the top plate 150 and the top reinforcing plate 160 , and the avoidance gaps are used to connect the top corner piece 130 , so as to form a connection between the top plate 150 , the top reinforcing plate 160 and the top corner piece 130 .

[0090] Since there are four top corner pieces 130 , four top reinforcing plates 160 are also provided, and the four top reinforcing plates 160 are respectively located at the four corners of the square top plate 150 .

[0091] like Figure 2 As shown, in some embodiments, the top corner piece 130 and / or the bottom corner piece 230 are both configured with hanging holes 50.

[0092] It is understandable that the lifting device of the lifting device can be inserted into the lifting hole 50 to lift the battery rack for transportation. Based on the structure of the battery rack, the battery rack has four top corner pieces 130 and four bottom corner pieces 230. The lifting device can lift the four top corner pieces 130 of the battery rack to achieve the overall lifting of the battery rack. The lifting device can also lift the four bottom corner pieces 230 of the battery rack to achieve the overall lifting of the battery rack.

[0093] When the battery rack is lifted, the gravity of the battery rack and the battery module 70 will exert a force on the top frame 10 and the bottom frame 20 of the battery rack. Since the bottom frame 20 of the battery rack has a reinforcement member 40 for structural reinforcement, and the bottom plate 250 of the bottom frame 20 is also connected to the bottom corner member 230 through the bottom reinforcement plate 260, it can be ensured that the bottom frame 20 does not undergo flexible bending deformation. Since the top plate 150 on the top frame 10 of the battery rack is connected to the top corner member 130 through the top reinforcement plate 160, it can be ensured that the top frame 10 does not undergo flexible bending deformation. In this way, it is ensured that the battery rack as a whole does not undergo local deformation after the ceiling is suspended and after the ceiling is suspended.

[0094] A plurality of lifting holes may be provided on each top corner piece 130 and each bottom corner piece 230. The shape and size of the lifting holes can be adapted to the lifting tool, and the embodiment of the utility model is not limited thereto.

[0095] like Figure 1 and Figure 2 As shown, in some embodiments, two side frames 30 are provided, and the two side frames 30 are spaced apart along the second direction. Each side frame 30 includes two columns 310, two side vertical beams 320, and a side cross beam 350. Each column 310 is connected between the corresponding bottom corner piece 230 and the top corner piece 130. The two side vertical beams 320 are spaced apart between the two columns 310, and each side vertical beam 320 is connected with a first side oblique beam 330 and a second side oblique beam 340, the first side oblique beam 330 is connected to the bottom corner piece 230, and the second side oblique beam 340 is connected to the top corner piece 130. Among them, the side cross beam 350 is connected between the two side vertical beams 320; and / or, the side cross beam 350 is connected between the side cross beam 350 and the adjacent column 310; and / or, the side cross beam 350 is connected between the side cross beam 350 and the adjacent first side diagonal beam 330; and / or, the side cross beam 350 is connected between the side cross beam 350 and the adjacent second side diagonal beam 340.

[0096] Specifically, a side cross beam 350 is welded between the two side vertical beams 320 , and a side cross beam 350 is welded between the side cross beam 350 and the adjacent column 310 , and a side cross beam 350 is welded between the side cross beam 350 and the adjacent first side diagonal beam 330 , and a side cross beam 350 is welded between the side cross beam 350 and the adjacent second side diagonal beam 340 .

[0097] The two side frames 30 are arranged opposite to each other to facilitate fixing the two sides of the battery module 70. The columns 310 of the side frames 30 are used to connect the bottom corner pieces 230 and the top corner pieces 130, so that the bottom frame 20 and the top frame 10 are connected to form a whole through the columns 310. Two side vertical beams 320 are arranged between the two columns 310 at intervals, and the upper ends of the two side vertical beams 320 are welded to the top side beam 110, and the two side vertical beams 320 can be connected through the side cross beam 350. And the lower ends of the two side vertical beams 320 can also be connected to the first side diagonal beam 330 adjacent thereto through the side cross beam 350.

[0098] like Figure 2 As shown, a plurality of side cross beams 350 are connected between the two side vertical beams 320. For example, three side cross beams 350 are welded at intervals along the third direction between the two side vertical beams 320. Thus, the two side vertical beams 320 are structurally reinforced by the three side cross beams 350.

[0099] Based on the two side vertical beams 320, the two first side oblique beams 330, the two second side oblique beams 340 and the plurality of side cross beams 350, a side reinforcement structure can be formed, thereby reinforcing the structure of the two columns 310 and improving the connection strength and structural strength between the bottom frame 20 and the top frame 10. Specifically, the two side vertical beams 320, the two first side oblique beams 330, the two second side oblique beams 340 and the plurality of side cross beams 350 can better support the bottom frame 20 and the top frame 10, ensuring that the columns 310, the bottom frame 20 and the top frame 10 do not bend or deform when the battery rack is lifted, transported or vibrated.

[0100] like Figure 1 and Figure 3 As shown, a support member 60 for mounting a battery module 70 is configured on the side frame 30. The support member 60 includes a limiting portion 610 and a supporting portion 620. The limiting portion 610 is connected to the side frame 30. The supporting portion 620 is connected at an angle to a side of the limiting portion 610 away from the side frame 30. A connecting hole 630 is configured at the first end of the supporting portion 620, and the connecting hole 630 is configured to lock the battery module 70 through a fastener. A limiting plate 640 is configured at the second end of the supporting portion 620, and the limiting plate 640 is configured to abut the battery module 70. In the direction from the first end to the second end, the limiting portion 610 has a tapered section 650 bent in a direction away from the side frame 30.

[0101] The battery module 70 is supported and fixed by the support member 60 to achieve the installation of the battery module 70. Based on the fact that there are two side frames 30, a plurality of support members 60 are constructed on the sides of the two side frames 30 facing each other. The plurality of support members 60 on each side frame 30 are arranged at intervals along the third direction, and the heights of the support members 60 on the two side frames 30 correspond. Thus, the battery module 70 is installed on two support members 60 of the same height to achieve the fixation of the battery module 70. In addition, the plurality of battery modules 70 can be stacked and installed in the battery frame along the height direction to achieve the stacking of the plurality of battery modules 70.

[0102] Specifically, the support member 60 includes an integrally formed limiting portion 610 and a supporting portion 620. The supporting portion 620 supports the battery module 70. Since the limiting portion 610 and the supporting portion 620 are arranged at an angle, the limiting portion 610 can be used to limit the side of the battery module 70 to prevent the battery module 70 from falling off the supporting portion 620. One side of the limiting portion 610 is welded to the side frame 30, and the supporting portion 620 is located on the side of the limiting portion 610 away from the side frame 30. Thus, the two supporting portions 620 located at the same height are used to support the opposite sides of the battery module 70, so as to fix the position of the battery module 70.

[0103] The support member 60 extends along a first direction. In the first direction, the length of the support member 60 matches the length of the side frame 30 , so that the support member 60 can provide a good supporting effect on the battery module 70 .

[0104] In some embodiments, the limiting portion 610 and the supporting portion 620 may be arranged in an L shape, and the limiting portion 610 and the supporting portion 620 are perpendicular to each other. Thus, the bottom of the battery module 70 may be supported and attached to the supporting portion 620, and the side of the battery module 70 may be limited by the limiting portion 610 to prevent the battery module 70 from falling off the supporting portion 620.

[0105] In some embodiments, the limiting portion 610 and the supporting portion 620 may also be arranged in a T-shape, and the limiting portion 610 and the supporting portion 620 are also perpendicular to each other. It is also possible to install the battery module 70 on the supporting portion 620 and prevent the battery module 70 from falling off the supporting portion 620 through the limiting portion 610.

[0106] The limiting portion 610 may also have a top bending portion bent toward the battery module 70, and the top bending portion is parallel to the support portion 620. Under the joint action of the top bending portion and the support portion 620, the battery module 70 can be restricted in the height direction to prevent the battery module 70 from moving up and down, which is beneficial to the transportation of the battery cluster.

[0107] Based on the connection hole 630 being constructed at the first end of the support part 620 to lock the battery module 70, and based on the stop plate 640 being provided at the second end of the support part 620 to abut the battery module 70, the battery module 70 can be inserted into the battery rack from the first end, and its bottom is supported and fixed by the support part 620. After the battery module 70 is continuously inserted into the battery rack, its insertion side can abut against the stop plate 640, and then the other side is penetrated through the fixing hole of the battery module 70 and the connection hole 630 by the fastener, so that the position of the battery module 70 can be fixed.

[0108] Since the limiting portion 610 has a tapered section 650 that bends away from the side frame 30 along the direction from the first end to the second end, the spacing between the two supporting portions 620 at the first end will be greater than the gap between the two supporting portions 620 at the second end. When the battery module 70 is inserted into the battery rack from the first end, the battery rack can have a larger insertion width, which is convenient for inserting the battery module 70 into the battery rack. When the battery module 70 passes through the tapered section 650 and enters a position close to the second end, the width of the gap can limit the left and right movement of the battery module 70 to prevent the battery module 70 from shaking left and right, which is beneficial to the transportation of the battery cluster.

[0109] It is understandable that the limiting portion 610 may include a first section, a tapered section 650 and a second section. For two support members 60 located at the same height of the battery rack, the spacing between the two first sections is greater than the spacing between the two second sections, and the tapered section 650 is a transition section between the first section and the second section, so that the battery module 70 can quickly enter the area with a smaller spacing.

[0110] In some embodiments, the outer surface of the battery rack is coated with an anti-corrosion layer. The design based on the anti-corrosion layer can improve the overall anti-corrosion performance of the battery rack and ensure that it has a certain environmental adaptability to meet the environmental requirements during transportation of the battery rack.

[0111] Specifically, the outer surfaces of the bottom side beam 210, the bottom edge beam 220, the bottom angle piece 230, the bottom cross beam 240, the first reinforcing plate 410, the second reinforcing plate 420, the third reinforcing plate 430, the bottom plate 250, the bottom reinforcing plate 260, the mounting part 270, the equipotential connection part 280, the top side beam 110, the top edge beam 120, the top cross beam 140, the top angle piece 130, the top plate 150, the top reinforcing plate 160, the column 310, the side vertical beam 320, the first side oblique beam 330, the second side oblique beam 340, the side cross beam 350 and the support member 60 are all coated with an anti-corrosion layer, so that the overall corrosion protection level of the battery rack reaches C4H level.

[0112] The anti-corrosion layer can be applied to the outer surface of the battery rack by spraying. Of course, the anti-corrosion layer can also be applied to the outer surface of the battery rack by brushing.

[0113] In some embodiments, the anti-corrosion layer includes a zinc-rich primer layer, an epoxy paint layer, and a polyurethane layer stacked from the inside to the outside, thereby enabling the anti-corrosion grade of the battery rack to reach C4H grade.

[0114] The zinc-rich primer layer is sprayed on the outer surface of the battery rack, and the thickness of the zinc-rich primer layer can be set to 50 microns. The epoxy paint layer is sprayed on the outer surface of the zinc-rich primer layer, and the thickness of the epoxy paint layer can be set to 100 microns. The polyurethane layer is sprayed on the outer surface of the epoxy paint layer, and the thickness of the polyurethane layer can be set to 50 microns.

[0115] In some embodiments, the thickness of the zinc-rich primer layer, epoxy paint layer and polyurethane layer can also be set to other values. The thickness of the zinc-rich primer layer, epoxy paint layer and polyurethane layer can be reasonably selected based on the use environment of the battery rack so that the battery rack can adapt to the use environment.

[0116] In some embodiments, the anti-corrosion layer may also be formed by other protective coating systems on the outer surface of the battery rack so that the battery rack can achieve a suitable anti-corrosion level.

[0117] In some embodiments, the aforementioned bottom side beam 210, bottom side beam 220, bottom cross beam 240, top side beam 110, top side beam 120, top cross beam 140, side vertical beam 320, first side oblique beam 330, second side oblique beam 340 and side cross beam 350 are all rectangular square tubes. Since the moment of inertia of the cross section of the rectangular square tube is relatively small, the rectangular square tube has strong mechanical strength and rigidity, and the deflection of the rectangular square tube is large, and it is not easy to be flexurally deformed. As a result, the battery rack as a whole can have good mechanical strength and rigidity.

[0118] The rectangular square tube is made of metal material. For example, low alloy high strength structural steel, aluminum alloy, etc. For example, Q355 steel is used. This can make the rectangular square tube have good structural strength and rigidity, and can improve the overall structural strength and yield strength of the battery rack.

[0119] For different types of battery racks, the lengths and square dimensions of the bottom side beam 210, bottom edge beam 220, bottom cross beam 240, top side beam 110, top edge beam 120, side vertical beam 320, first side oblique beam 330, second side oblique beam 340 and side cross beam 350 can be reasonably selected.

[0120] In some embodiments, the aforementioned bottom side beam 210, bottom edge beam 220, bottom angle piece 230, bottom cross beam 240, first reinforcing plate 410, second reinforcing plate 420, third reinforcing plate 430, bottom plate 250, bottom reinforcing plate 260, mounting member 270, equipotential connection portion 280, top side beam 110, top edge beam 120, top angle piece 130, top plate 150, top reinforcing plate 160, column 310, side vertical beam 320, first side oblique beam 330, second side oblique beam 340, side cross beam 350 and support member 60, each of which can be welded by carbon dioxide shielded welding, and the weld is full weld. Based on carbon dioxide shielded welding, it can be ensured that there are no pores, pits, welding slag and other poor welding at the welding point, ensuring the overall quality of the battery rack. At the same time, it can guarantee the reliability of subsequent anti-corrosion layer spraying. Since the welding joints are fully welded, the overall strength and reliability of the welding joints can be ensured, and it can be ensured that the battery rack will not break or fail at the welding joints under the long-term gravity static load, vibration operating load, and overall transportation operating load of the battery module 70.

[0121] On the other hand, the present invention also provides a battery cluster. Figure 4 As shown, the battery cluster includes a battery module 70 and the battery rack in the above-mentioned embodiment. The battery module 70 is installed in the battery rack.

[0122] In some embodiments, a battery rack is formed by a top frame 10, a bottom frame 20 and a side frame 30 to place a battery module 70. A reinforcement member 40 is arranged in the bottom frame 20, so that the reinforcement member 40 penetrates the bottom frame 20 in a first direction, and the reinforcement member 40 is connected to the bottom frame 20 through a bottom cross beam 240 in a second direction. The reinforcement member 40 can be used to reinforce the bottom frame 20 to improve the overall structural strength of the battery rack, thereby improving the technical problem of insufficient structural strength of the battery rack.

[0123] The battery rack based on the above structure has sufficient strength, so the overall overhead hanging, stacking and transportation of the battery rack can be realized. Therefore, after the battery module 70 is installed in the battery rack to form a battery cluster, the battery cluster level can be shipped, sold and displayed, which broadens the sales types.

[0124] In another aspect, an embodiment of the present application further provides a battery energy storage system, which includes the battery cluster in the aforementioned embodiment.

[0125] In some embodiments, a battery rack is formed by a top frame 10, a bottom frame 20 and a side frame 30 to place a battery module 70. A reinforcement member 40 is arranged in the bottom frame 20, so that the reinforcement member 40 penetrates the bottom frame 20 in a first direction, and the reinforcement member 40 is connected to the bottom frame 20 through a bottom cross beam 240 in a second direction. The reinforcement member 40 can be used to reinforce the bottom frame 20 to improve the overall structural strength of the battery rack, thereby improving the technical problem of insufficient structural strength of the battery rack.

[0126] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A battery rack, characterized in that: include: Top frame; A bottom frame, spaced apart from the top frame; a side frame connected between the top frame and the bottom frame, the side frame being configured to mount a battery module; A reinforcement is connected inside the bottom frame, and in a first direction, two sides of the reinforcement are respectively connected to opposite sides of the bottom frame, and in a second direction, two sides of the reinforcement are respectively connected to opposite sides of the bottom frame through a bottom cross beam, wherein the first direction is perpendicular to the second direction.

2. The battery rack according to claim 1, characterized in that: The bottom frame comprises: two bottom side beams, each of the bottom side beams extending along the first direction; two bottom side beams, each of the bottom side beams extending along the second direction; Among them, the end of each bottom side beam is connected to the end of the corresponding bottom side beam through the bottom angle piece, so that the two bottom side beams and the two bottom side beams are combined to form a square bottom frame. In the first direction, the two sides of the reinforcement are respectively connected to the two bottom side beams, and in the second direction, the two sides of the reinforcement are respectively connected to the two bottom side beams through the bottom cross beam.

3. The battery rack according to claim 2, characterized in that: The reinforcement member comprises: a first reinforcement plate; a second reinforcing plate, spaced apart from the first reinforcing plate; a third reinforcing plate, connected between the first reinforcing plate and the second reinforcing plate; Wherein, in the first direction, two sides of the third reinforcing plate are respectively connected to the two bottom edge beams, and in the second direction, two sides of the third reinforcing plate are respectively connected to the two bottom side beams through the bottom cross beam.

4. The battery rack according to claim 3, characterized in that: The bottom frame also includes: Two bottom plates, in the first direction, two sides of each bottom plate are respectively connected to the two bottom side beams, in the second direction, the two bottom plates are respectively connected to two sides of the third reinforcing plate, and each bottom plate is respectively connected to the corresponding bottom side beam, in the third direction, the two bottom plates are both located between the bottom cross beam and the second reinforcing plate; Wherein, the third direction is perpendicular to the first direction and the second direction, each of the bottom plates is connected to a bottom reinforcement plate, and the bottom reinforcement plate is connected to the bottom angle piece.

5. The battery rack according to claim 2, characterized in that: The bottom frame also includes: A mounting member is connected to the bottom cross beam and / or the bottom side beam, and the mounting member is configured to mount an electrical component.

6. The battery rack according to claim 2, characterized in that: The two bottom side beams are both constructed with equipotential connection parts. In the first direction, the two equipotential connection parts are far away from each other. In the second direction, each of the equipotential connection parts is arranged far away from the bottom side beam.

7. The battery rack according to any one of claims 2 to 6, characterized in that: The top frame comprises: two top side beams, each of the top side beams extending along the first direction; two top side beams, each of the top side beams extending along the second direction; A top plate connected to the two top side beams and the two top edge beams; Among them, the end of each top side beam is connected to the end of the corresponding top side beam through a top corner piece, so that the two top side beams and the two top side beams are combined to form a square top frame, and a top reinforcement plate is connected to the top plate, and the top reinforcement plate is connected to the top corner piece.

8. The battery rack according to claim 7, characterized in that: The top corner piece and / or the bottom corner piece are both configured with hanging holes.

9. The battery rack according to claim 7, characterized in that: The side frames are provided in two numbers, and the two side frames are spaced apart along the second direction, wherein each of the side frames comprises: Two columns, each of which is connected between the corresponding bottom corner piece and the top corner piece; Two side vertical beams are arranged between the two columns at intervals, each of the side vertical beams is connected to a first side diagonal beam and a second side diagonal beam, the first side diagonal beam is connected to the bottom corner piece, and the second side diagonal beam is connected to the top corner piece; The side cross beam is connected between the two side vertical beams, and / or is connected between the side cross beam and the adjacent column, and / or is connected between the side cross beam and the adjacent first side diagonal beam, and / or is connected between the side cross beam and the adjacent second side diagonal beam.

10. The battery rack according to any one of claims 1 to 6, characterized in that: The side frame is provided with a support member for mounting a battery module, and the support member includes: A limiting portion connected to the side frame; A support portion, connected at an angle to a side of the limiting portion away from the side frame; The first end of the support portion is configured with a connection hole, the connection hole is configured to lock the battery module through a fastener, and the second end of the support portion is configured with a limit plate, the limit plate is configured to abut the battery module; Wherein, along the direction from the first end to the second end, the limiting portion has a tapered section bent in a direction away from the side frame.

11. The battery rack according to any one of claims 1 to 6, characterized in that: The outer surfaces of the battery racks are coated with an anti-corrosion layer.

12. The battery rack according to claim 11, characterized in that: The anti-corrosion layer comprises a zinc-rich primer layer, an epoxy paint layer and a polyurethane layer which are stacked from the inside to the outside.

13. A battery cluster, characterized in that: include: Battery modules; A battery rack as described in any one of claims 1 to 12; Wherein, the battery module is installed in the battery rack.

14. A battery energy storage system, characterized in that: Comprising the battery cluster as claimed in claim 13.

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