Energy storage box and electric equipment

Abstract

The utility model discloses an energy storage box and electric equipment, and belongs to the technical field of batteries, and the energy storage box comprises a box body which is provided with a containing cavity; the cover plate comprises a plate body and a connecting part connected to the plate body in a surrounding mode, and the plate body is connected to the box body and covers the containing cavity; and the lap joint piece is connected to part of the side edge of the box body and is connected with the connecting part. After the box body and the cover plate are normally connected, part of the side edge of the box body is connected with the connecting part on the cover plate through the lap joint piece, and when the interior of the device explodes, due to the connection effect of the lap joint piece on the box body and the cover plate, it can be guaranteed that the cover plate cannot be extruded by explosion gas to be separated from the box body and fly out; and the safety of the energy storage box in the using process is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of batteries, and particularly relates to an energy storage box and an electric device. BACKGROUND

[0002] The inside of the energy storage box is generally provided with a plurality of batteries. In an extreme case such as thermal runaway, the internal gas generation rate of the batteries accelerates, and most of the generated gas is flammable and explosive. Too much accumulation may cause the energy storage box to explode and other dangerous situations. The explosion may increase the pressure in the box, causing the cover plate installed on the box to fly off, thereby reducing safety. CONTENT OF THE UTILITY MODEL

[0003] The application aims to overcome the technical problem that the cover plate installed on the energy storage box flies off when the inside of the energy storage box explodes. Another object of the application is to provide an electric device.

[0004] TECHNICAL SCHEME The energy storage box provided by the application comprises:

[0005] a box body provided with a containing cavity;

[0006] a cover plate comprising a plate body and a connecting portion connected to the plate body, the plate body being connected to the box body and the cover being arranged in the containing cavity;

[0007] a lapping piece connected to part of the side edges of the box body and connected to the connecting portion.

[0008] In some embodiments, the energy storage box comprises a flange arranged around the box body, and the flange is connected to the box body and the plate body, respectively.

[0009] The lapping piece is connected to part of the side edges of the box body through the flange.

[0010] In some embodiments, the energy storage box comprises a plurality of fixing pieces and a plurality of limiting pieces, the plurality of fixing pieces are connected to the plate body and the flange, respectively, the plurality of limiting pieces are connected to the lapping piece and the connecting portion, respectively, and the extension direction of the fixing piece intersects the extension direction of the limiting piece.

[0011] In some embodiments, the lapping piece comprises:

[0012] a first lapping portion located on the side of the flange away from the plate body and connected to the flange;

[0013] a second lapping portion connected to the first lapping portion, the second lapping portion being located on the side of the connecting portion facing the box body and connected to the connecting portion.

[0014] In some embodiments, the flange has a first hole in a thickness direction of the box body, the lap joint has a second hole corresponding to the first hole, and the plate body has a third hole corresponding to the first hole.

[0015] The energy storage box further comprises:

[0016] A fixing member is arranged through the first hole and the second hole to connect the flange and the lap joint.

[0017] In some embodiments, the flange has a first hole in a thickness direction of the box body, the lap joint has a second hole corresponding to the first hole, and the plate body has a third hole corresponding to the first hole.

[0018] The energy storage box further comprises:

[0019] A fixing member is arranged through the first hole, the second hole and the third hole to connect the plate body, the flange and the lap joint.

[0020] In some embodiments, the second hole is a waist-shaped hole extending in a direction towards the box body.

[0021] In some embodiments, the flange and the lap joint are in an integral structure.

[0022] In some embodiments, the energy storage box further comprises a plurality of battery monomers arranged in the accommodating cavity.

[0023] A power consuming device comprising the energy storage box as described above.

[0024] Beneficial effects: the energy storage box of the embodiments of the present application comprises a box body provided with an accommodating cavity, a cover plate comprising a plate body and a connecting portion connected to the plate body, the plate body being connected to the box body and the cover being arranged in the accommodating cavity, and a lap joint connected to a part of the side edges of the box body and connected to the connecting portion. After the box body and the cover plate are normally connected, the part of the side edges of the box body and the connecting portion on the cover plate are connected through the lap joint. In the event of an explosion in the interior of the device, the lap joint can ensure that the cover plate will not be extruded by the explosion gas to fly out of the box body, thereby improving the safety of the energy storage box during use.

[0025] The embodiments of the present application provide a power consuming device comprising the energy storage box as described above, which has all the technical features and beneficial effects of the energy storage box, and will not be described in detail herein. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description 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 any creative effort based on these drawings.

[0027] Figure 1 The explosion structure schematic diagram of the energy storage box provided by the embodiments of the present application is shown in the figure.

[0028] Figure 2 The overall structure schematic diagram of the energy storage box provided by the embodiments of the present application is shown in the figure.

[0029] Figure 3 The box structure schematic diagram with one lap joint provided by the embodiments of the present application is shown in the figure.

[0030] Figure 4 The box structure schematic diagram with multiple lap joints provided by the embodiments of the present application is shown in the figure.

[0031] Figure 5 The structure schematic diagram with another shape of lap joint provided by the embodiments of the present application is shown in the figure.

[0032] Figure 6 The structure schematic diagram with a third shape of lap joint provided by the embodiments of the present application is shown in the figure.

[0033] Figure 7 The structure schematic diagram with a fourth shape of lap joint provided by the embodiments of the present application is shown in the figure.

[0034] Figure 8 The overall structure schematic diagram of the energy storage box from another perspective provided by the embodiments of the present application is shown in the figure.

[0035] Figure 9 The explosion diagram of the energy storage box from another perspective provided by the embodiments of the present application is shown in the figure.

[0036] Figure 10 The perspective view of the lap joint provided by the embodiments of the present application is shown in the figure.

[0037] Figure 11 The cross-sectional structure schematic diagram of the box and the cover plate provided by the embodiments of the present application is shown in the figure.

[0038] Figure 12 The partial enlarged view of area A in the figure. Figure 11

[0039] ​Label: 10 - box; 11 - containing cavity; 12 - opening; 13 - flange; 131 - first face; 132 - first hole; 20 - cover plate; 21 - plate body; 211 - third hole; 22 - connecting part; 30 - lap joint; 31 - second face; 32 - first lap joint; 33 - second lap joint; 34 - second hole; 40 - fixing part; 50 - battery monomer; 60 - limiting part; X - thickness direction; Y - length direction; Z - width direction. DETAILED DESCRIPTION

[0040] 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, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] In the description of the present application, it should be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can be explicitly or implicitly included one or more features. In the description of the present application, the meaning of "multiple" is two or more, at least one refers to one, two or more, unless otherwise specifically limited.

[0042] As an introduction to the embodiments of the present application, a kind of energy storage box is introduced, and the safety of the application scene of electrochemical energy storage box accompanying frequent activities of personnel is particularly important. Lithium battery installed inside electrochemical energy storage box in extreme conditions such as thermal runaway, the gas production rate in battery is accelerated, and most of the generated gas is flammable and explosive, and too much accumulation can cause energy storage box explosion and other dangerous situations, explosion can increase the pressure in the box, possibly causing the cover plate installed on the box to fly off, injuring the surrounding personnel, and reducing safety.

[0043] Therefore, the present application provides a battery monomer to overcome at least one of the above technical problems.

[0044] Please refer to Figure 1 , Figure 2 and Figure 3 In the embodiments of the present application, the energy storage box includes a box 10, a cover plate 20 and a lap joint 30.

[0045] The box 10 is the main component of the energy storage box, which plays a key role in containing and connecting other components. The box 10 has a containing cavity 11 inside, which is used to store or protect stored articles or equipment. The size and shape of this containing cavity 11 can be designed according to actual needs.

[0046] The cover plate 20 comprises a plate body 21 and a connecting portion 22 surrounding the connecting portion 22, the plate body 21 is connected to the box body 10, and the cover is arranged in the accommodating cavity 11 of the box body 10. The cover plate 20 can completely cover the accommodating cavity 11, effectively seal the accommodating cavity 11, prevent external foreign matters from entering the box body 10, and ensure the safety and integrity of the internal installation structure of the accommodating cavity 11.

[0047] The lap joint 30 is connected to part of the side edge of the box body 10 and connected to the connecting portion 22. The lap joint 30 increases the structural strength and stability of the connection between the box body 10 and the cover plate 20. On the basis of the connection between the plate body 21 and the box body 10, the lap joint 30 further connects part of the side edge of the box body 10 and the connecting portion 22 of the cover plate 20. This connection mode provides additional structural support. When an explosion occurs inside the box body 10 and the internal pressure increases, in addition to the original connection structure between the box body 10 and the plate body 21 bearing part of the explosion pressure, the lap joint 30 can also share and bear part of the load, which can ensure that the cover plate 20 will not fly out of the box body 10, improve the safety, and increase the overall strength and stability of the energy storage box. Even if the pressure generated by the explosion inside the box body 10 is large enough to cause damage to the original connection structure between the box body 10 and the cover plate 20, causing a gap between the box body 10 and the cover plate 20 and a tendency to separate, but part of the explosion pressure can be released through the gap between the box body 10 and the cover plate 20, and the lap joint 30 can completely bear the remaining pressure, ensuring that the cover plate 20 will not fly out of the box body 10 and injure the surrounding personnel, improving the safety of the energy storage box. At the same time, even if the cover plate 20 is subjected to external pressure on a large area, the lap joint 30 can share and bear part of the load, reducing the degree of deformation of the cover plate 20 and improving the overall strength of the energy storage box. At the same time, the lap joint 30 can also provide additional sealing effect. When the plate body 21 of the cover plate 20 is tightly connected to the box body 10, the connecting portion 22 of the cover plate 20 is connected to the box body 10 through the lap joint 30, and the lap joint 30 acts as an additional waterproof and sealing structure. It can prevent water, dust and other impurities from entering the energy storage box, protecting the safety and integrity of the internal items.

[0048] Please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7In some embodiments, the box 10 comprises a flange 13, which is arranged around the box 10 and is connected to the box 10 and the plate 21 respectively. The overlap piece 30 is connected to the part of the side of the box 10 through the flange 13. Since the side wall of the energy storage box 10 is generally designed to be thin, when the cover plate 20 is covered on the box 10, the contact area of the two is small. By arranging the flange 13 on the box 10, the contact area of the flange 13 and the cover plate 20 is large, which is more convenient to connect the cover plate 20 to the flange 13 through the connecting structure, which is equivalent to facilitating the connection of the cover plate 20 and the box 10. The flange 13 provides stronger structural support and stability for the connection of the cover plate 20 and the box 10. The flange 13 is located at the opening 12 of the box 10, thereby forming an arrangement around the outer periphery of the box 10, which provides support for the installation of the cover plate 20.

[0049] The number of the overlap piece 30 is one, and the overlap piece 30 is connected to at least one flange 13. If the energy storage box has only one overlap piece 30, it will be connected to at least one flange 13. The overlap piece 30 can be a straight strip structure, an L-shaped structure, a U-shaped structure, or even a mouth-shaped structure, which can be connected to at least one flange 13. This connection mode increases the structural strength of the energy storage box and ensures the firm connection between the cover plate 20 and the box 10. Alternatively, the number of the overlap piece 30 is multiple, and each overlap piece 30 is connected to at least one flange 13. The shapes of the multiple overlap pieces 30 can also be straight strip structures, L-shaped structures, U-shaped structures, or mouth-shaped structures, etc. The multiple overlap pieces 30 can be arranged at intervals, which can greatly improve the stability of the connection between the flange 13 and the connecting part 22, which is equivalent to further improving the stability of the connection between the box 10 and the cover plate 20 through the connection of multiple secondary flanges, and can avoid the cover plate 20 flying out of the box 10 when an explosion occurs in the energy storage box.

[0050] Please refer to Figure 1 , Figure 3 , Figure 11 and Figure 12In some embodiments, the energy storage box comprises a plurality of fixing members 40 and a plurality of limiting members 60, the plurality of fixing members 40 are respectively connected to the plate body 21 and the flange 13, the plurality of limiting members 60 are respectively connected to the lap joint member 30 and the connecting portion 22, and the extending direction of the fixing member 40 intersects with the extending direction of the limiting member 60. It can be understood that the fixing member 40 and the limiting member 60 can both be bolt structures, the plate body 21 of the cover plate 20 is connected through the plurality of fixing members 40 and the flange 13, and the extending directions of the plurality of fixing members 40 are the same in use. The connecting portion 22 of the cover plate 20 is connected through the limiting member 60 and the lap joint member 30, and the extending directions of the plurality of limiting members 60 are the same in use. After the cover plate 20 is connected with the box body 10 through the plurality of fixing members 40 and the plurality of limiting members 60, at this time, the extending direction of the fixing member 40 intersects with the extending direction of the limiting member 60, and preferably, the extending directions of the two are perpendicular to each other. When an explosion occurs in the interior of the energy storage box, the gas generated by the explosion will extrude the cover plate 20, since the fixing member 40 has good tensile resistance, the plate body 21 and the flange 13 can be stably connected, the limiting member 60 has good shear resistance, the connecting portion 22 and the lap joint member 30 can be stably connected, thereby ensuring the stability of the connection between the cover plate 20 and the box body 10, preventing the cover plate 20 from flying out of the box body 10 when the energy storage box is vented, and improving the safety of the structure when vented.

[0051] Please refer to Figure 8 、 Figure 9 and Figure 10 In some embodiments, the lap joint member 30 comprises a first lap joint portion 32 and a second lap joint portion 33. The first lap joint portion 32 is located on the side of the flange 13 away from the plate body 21 and is connected with the flange 13. The flange 13 and the first lap joint portion 32 can be parallel to each other, when they are connected, they can have a larger contact area, facilitating the installation of the connection structure, reducing the difficulty of connection, and also enabling the first lap joint portion 32 to be more firmly connected with the flange 13. The second lap joint portion 33 is connected with the first lap joint portion 32, and the second lap joint portion 33 is located on the side of the connecting portion 22 facing the box body 10 and is connected with the connecting portion 22. Among them, the second lap joint portion 33 can be parallel to a part of the connecting portion 22 (that is, the part of the connecting portion 22 in contact with the second lap joint portion 33), and the parallel arrangement of the two can also increase the contact area, reduce the difficulty of connection between the two, and enable the second lap joint portion 33 to be more firmly connected with the connecting portion 22.

[0052] The first lap joint portion 32 and the second lap joint portion 33 can be connected by welding or be an integral structure, which can improve the overall firmness of the lap joint member 30. When the flange 13 is connected with the connecting portion 22 through the first lap joint portion 32 and the second lap joint portion 33 connected with each other, the firmness of the connection between the flange 13 and the connecting portion 22 can be improved, thereby further ensuring that the cover plate 20 will not fly out of the box body 10 when an explosion occurs in the interior of the energy storage box.

[0053] Please see Figure 11 and Figure 12 In some embodiments, along the thickness direction X of the housing 10, the flange 13 has a first hole 132, and the overlapping member 30 has a second hole 34 corresponding to and communicating with the first hole 132. The energy storage box also includes a fastener 40, which can be used to tightly connect the flange 13 and the overlapping member 30, providing stronger structural support and stability. The fastener 40 is typically a screw, bolt, or other connection structure. The fastener 40 passes through the first hole 132 and the second hole 34 to connect the flange 13 and the overlapping member 30. The first hole 132 passes through the flange 13 along the thickness direction X of the housing 10, allowing the fastener 40 to pass through the first hole 132 and connect the fastener 40 to the flange 13. The second hole 34, corresponding to the first hole 132, is located on the overlapping member 30, also along the thickness direction X of the housing 10, and matches the position of the first hole 132. This structure is to ensure that the fastener 40 can pass through the first hole 132 and the second hole 34 to connect the flange 13 and the overlapping member 30. The flange 13 is then connected to the cover plate 20 via the overlap piece 30, making the entire energy storage box structure more robust and stable.

[0054] Please see Figure 11 and Figure 12 In some embodiments, along the thickness direction X of the housing 10, the flange 13 has a first hole 132, the overlapping member 30 has a second hole 34 corresponding to the first hole 132, and the plate 21 has a third hole 211 corresponding to the first hole 132. The energy storage box also includes fasteners 40 for connecting the plate 21, flange 13, and overlapping member 30. These fasteners 40 are typically screws, bolts, or other connecting structures. Since the third hole 211, the first hole 132, and the second hole 34 are sequentially connected, the fasteners 40 pass through the third hole 211, the first hole 132, and the second hole 34, respectively connecting to the plate 21, flange 13, and overlapping member 30, thereby connecting the plate 21, flange 13, and overlapping member 30 into a whole through the fasteners 40. The fasteners 40 firmly connect these parts, ensuring the strength and stability of the connection between the housing 10 and the cover plate 20, and preventing the cover plate 20 from detaching from the housing 10 due to other factors.

[0055] Please see Figure 11 and Figure 12In some embodiments, the second hole 34 is a waist-shaped hole that extends in a direction towards the box 10. The waist-shaped hole is formed on the lap joint 30 along the thickness direction X of the box 10. If the lap joint 30 is connected to the flange 13 and is arranged along the length direction Y of the box 10, the waist-shaped hole extends along the length direction Y of the box 10 at this time. When the lap joint 30 is connected to the flange 13, the position of the lap joint 30 can be adjusted along the length direction Y of the box 10, so that the lap joint 30 is tightly fitted with the connecting part 22 on the cover plate 20, thereby improving the firmness of the connection between the lap joint 30 and the connecting part 22 and avoiding loose connection due to the gap between them. If the lap joint 30 is connected to the flange 13 and is arranged along the width direction Z of the box 10, the waist-shaped hole extends along the width direction Z of the box 10 at this time. When the lap joint 30 is connected to the flange 13, the position of the lap joint 30 can be adjusted along the width direction Z of the box 10, so that the lap joint 30 is tightly fitted with the connecting part 22 on the cover plate 20, thereby improving the firmness of the connection between the lap joint 30 and the connecting part 22.

[0056] Please refer to Figure 1 , Figure 3 and Figure 4 In some embodiments, the flange 13 and the lap joint 30 are an integrated structure. This means that they are tightly connected together to form a whole. The integration of the flange 13 and the lap joint 30 means that they share the load, making the entire energy storage box more solid and stable. This structure can provide better compression strength and torsional resistance because there is no separate joint or connection point. The integration of the flange 13 and the lap joint 30 can also provide better sealing and protection. Since there is no gap or gap, objects cannot pass between the two, which provides higher waterproof, dustproof and corrosion resistance.

[0057] Please refer to Figure 1In some embodiments, the energy storage box further comprises a plurality of battery cells 50 arranged in the accommodation cavity 11. The accommodation cavity 11 is an area in the energy storage box arranged for the battery cells 50. It allows the installation of a plurality of battery cells 50 and provides the necessary support and isolation. By arranging the battery cells 50 in the accommodation cavity 11, effective battery management and protection can be achieved. Each battery cell 50 can be fixed and positioned in the accommodation cavity 11, so as to avoid collision and movement between them. In addition, the accommodation cavity 11 can also provide relatively constant temperature and environmental conditions to ensure the normal operation and life of the battery cells 50. The energy storage box can also include cooling systems and protection devices related to the battery cells 50. These systems and devices can help monitor and regulate the temperature of the battery cells 50 to ensure that they work within a safe range. At the same time, they can also provide short-circuit protection, overcharge protection, over-discharge protection and other functions to ensure the safe use of the battery cells 50 and the reliability of the overall energy storage system.

[0058] A power consuming device comprising the energy storage box of any one of the above. The power consuming device has all the technical features and advantages of the energy storage box, which will not be repeated here.

[0059] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0060] The energy storage box and power consuming device provided by the embodiments of the present application are described in detail above, and specific examples are applied to explain the principles and implementation modes of the present application. The above embodiment descriptions are only used to help understand the technical solutions and core ideas of the present application; those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An energy storage tank, characterized by, The energy storage box comprises: a box body (10) provided with a receiving cavity (11); a cover plate (20) comprising a plate body (21) and a connecting portion (22) connected to the plate body (21), the plate body (21) being connected to the box body (10) and covering the receiving cavity (11); a clamping member (30) connected to a part of the side edge of the box body (10) and connected to the connecting portion (22).

2. The energy storage tank of claim 1, wherein, The energy storage box comprises a flange (13) arranged around the box body (10), the flange (13) being connected to the box body (10) and the plate body (21) respectively; The clamping member (30) is connected to a part of the side edge of the box body (10) through the flange (13).

3. The energy storage tank of claim 2, wherein, The energy storage box comprises a plurality of fixing members (40) and a plurality of limiting members (60), the plurality of fixing members (40) being connected to the plate body (21) and the flange (13) respectively, the plurality of limiting members (60) being connected to the clamping member (30) and the connecting portion (22) respectively, and the extension direction of the fixing member (40) intersecting the extension direction of the limiting member (60).

4. The energy storage tank of claim 2, wherein, The clamping member (30) comprises: a first clamping portion (32) located on the side of the flange (13) away from the plate body (21) and connected to the flange (13); a second clamping portion (33) connected to the first clamping portion (32), the second clamping portion (33) being located on the side of the connecting portion (22) facing the box body (10) and connected to the connecting portion (22).

5. The energy storage tank of claim 2, wherein, Along the thickness direction (X) of the box body (10), the flange (13) has a first hole (132), and the clamping member (30) has a second hole (34) corresponding to the first hole (132); The energy storage box further comprises: a fixing member (40) penetrating the first hole (132) and the second hole (34) to connect the flange (13) and the clamping member (30).

6. The energy storage tank of claim 2, wherein, Along the thickness direction (X) of the box body (10), the flange (13) has a first hole (132), the clamping member (30) has a second hole (34) corresponding to the first hole (132), and the plate body (21) has a third hole (211) corresponding to the first hole (132); The energy storage box further comprises: a fixing member (40) penetrating the first hole (132), the second hole (34), and the third hole (211) to connect the plate body (21), the flange (13), and the clamping member (30).

7. The energy storage tank of claim 6, wherein, The second hole (34) is a waist-shaped hole extending in the direction facing the box body (10).

8. The energy storage tank of claim 2, wherein, The flange (13) and the clamping member (30) are of an integral structure.

9. The energy storage tank of claim 1, wherein, The energy storage box further comprises a plurality of battery monomers (50) arranged in the receiving cavity (11).

10. An electric device, characterized by The energy storage box comprises the energy storage box according to any one of claims 1 to 9.

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