Battery and energy storage device

Abstract

The utility model discloses a battery and an energy storage device. The battery comprises a box body and a battery monomer, the battery monomers are accommodated in the box body; in the first direction, the box body is provided with a first side and a second side which are oppositely arranged. Wherein the first side is provided with a first convex part, and the second side is provided with a first groove. And the first grooves are used for accommodating the first convex parts of the adjacent batteries when the plurality of batteries are stacked along the first direction. And the first grooves and the first convex parts of the adjacent batteries form structural limitation, so that the relative movement of the adjacent batteries in the direction perpendicular to the first direction is limited, and the plurality of batteries are conveniently stacked in the first direction. Meanwhile, the plurality of batteries can be laid on the ground along the direction perpendicular to the first direction. Therefore, flexible configuration of a plurality of batteries is realized, and different installation spaces are adapted.

Description

Technical Field

[0001] The present application relates to the field of energy storage, and in particular, to a battery and an energy storage device. Background Art

[0002] Energy storage devices are electrical energy storage and transfer equipment. Energy storage devices can be used in power systems. They can store surplus electrical energy during valley periods to supplement peak periods.

[0003] In the development of energy storage device technology, in addition to the energy density of the energy storage device, adapting to different installation spaces is also an issue that needs to be considered. Utility Model Content

[0004] In view of the above problems, the embodiments of the present application provide a battery and an energy storage device, which can realize flexible configuration of multiple batteries and adapt to different installation spaces.

[0005] In a first aspect, an embodiment of the present application provides a battery, comprising a box and a battery cell. The battery cell is contained in the box. Along a first direction, the box has a first side and a second side that are arranged opposite to each other. The first side is provided with a first convex portion, and the second side is provided with a first groove. The first groove is used to accommodate the first convex portion of an adjacent battery when multiple batteries are stacked along the first direction.

[0006] In the technical solution of the embodiment of the present application, a first convex portion is provided on the first side, a first groove is provided on the second side, and the first side and the second side are arranged relative to each other along the first direction. When multiple batteries are stacked along the first direction, the first groove accommodates the first convex portion of the adjacent battery, so that the first groove and the first convex portion of the adjacent battery form a structural limit with each other, thereby limiting the relative movement of adjacent batteries in a direction perpendicular to the first direction, thereby facilitating the stacking of multiple batteries along the first direction. At the same time, multiple batteries can be laid on the ground in a direction perpendicular to the first direction. Thereby, a flexible configuration of multiple batteries is achieved to adapt to different installation spaces.

[0007] In some embodiments, the box includes a box body and a support arranged along a first direction. One end of the support is connected to the box body, the other end of the support is provided with a first groove, and the first convex portion is provided on a side of the box body away from the support.

[0008] In the above scheme, the box includes a box body and a support member arranged along a first direction, and the first groove is arranged at one end of the support member away from the box body, and the first convex portion is arranged on the side of the box body away from the support member. Therefore, when multiple batteries are stacked along the first direction, along the first direction, the support member is located between the box body and the adjacent battery and the adjacent box body, or the support member is used to abut against the ground. Therefore, along the first direction, there is a gap between the box bodies, and there is a gap between the box body and the ground, which is convenient for heat dissipation, which is beneficial to reducing the operating temperature of the battery and improving the reliability of the battery.

[0009] In some embodiments, the first protrusion extends along a second direction. The first groove penetrates the support member along the second direction, and the second direction is perpendicular to the first direction.

[0010] In the above scheme, the first protrusion extends along the second direction so that the first protrusion can play a role in structural reinforcement, thereby increasing the bearing capacity of the side of the box body away from the support member, reducing the deflection of the side of the box body away from the support member, and thus increasing the reliability of the box body when multiple batteries are stacked along the first direction.

[0011] In some embodiments, the first protrusions are multiple and spaced apart along the third direction. The support members are multiple. The multiple support members are multiple columns arranged along the third direction corresponding to the multiple first protrusions, and each column of support members is multiple and spaced apart along the second direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0012] In the above scheme, the first protrusions are multiple and spaced apart along the third direction, so as to further strengthen the structure of the side of the box body away from the support member. The support member is arranged in multiple rows corresponding to the multiple first protrusions along the third direction, and each row of support members is multiple and spaced apart along the second direction. Therefore, when multiple batteries are stacked along the first direction, the gravity of the batteries can be more evenly distributed to the first side of the adjacent batteries. This is beneficial to improving the reliability of the batteries when they are stacked along the first direction.

[0013] In some embodiments, the box body further includes a connecting member, the connecting member includes a first end wall and a side wall, the thickness direction of the first end wall is parallel to the first direction, and the thickness direction of the side wall is parallel to the second direction. The side wall is connected to the support member, and the first end wall is used to connect to the first protrusion of an adjacent battery when multiple batteries are stacked along the first direction.

[0014] In the above scheme, the side wall of the connecting member is connected to the supporting member, and the first end wall of the connecting member is connected to the first protrusion of the adjacent battery, so that the supporting member is connected to the first protrusion through the connecting member, thereby limiting the relative movement between adjacent batteries when multiple batteries are stacked along the first direction.

[0015] In some embodiments, along the first direction, the first end wall does not protrude beyond the bottom wall of the first groove.

[0016] In the above solution, the first end wall of the connector does not protrude from the bottom wall of the first groove, thereby reducing the risk of the first end wall of the connector interfering with the abutment between the bottom wall of the first groove and the first protrusion when multiple batteries are stacked along the first direction.

[0017] In some embodiments, the battery further includes a first fastener, and the first end wall is connected to the first protrusion of an adjacent battery through the first fastener.

[0018] In the above solution, the first end wall is connected to the first protrusion of the adjacent battery through the first fastener, and the first fastener may connect the first end wall to the first protrusion along the first direction, thereby facilitating the assembly of the adjacent batteries.

[0019] In some embodiments, the first protrusion has a third side away from the box body, a first through hole is provided on the first end wall, and a first threaded hole is provided on the third side. The first fastener is used to pass through the first through hole and connect the first threaded holes of adjacent batteries when multiple batteries are stacked along the first direction, so as to connect the first end wall and the first protrusion of the adjacent battery.

[0020] In the above solution, the first fastener passes through the first through hole and is connected to the first threaded hole, thereby facilitating the assembly and disassembly of adjacent batteries.

[0021] In some embodiments, the battery further includes a lifting piece, the lifting piece is used to be connected to a lifting device, and the first threaded hole is threadedly matched with the lifting piece.

[0022] In the above solution, the first threaded hole is threadably matched with the lifting member, so that when the battery needs to be lifted along the first direction, the lifting member is connected to the box body through the first threaded hole, so that the lifting device can lift the battery.

[0023] In some embodiments, the box body includes a second end wall and a third end wall arranged opposite to each other along a first direction, and a peripheral wall connecting the second end wall and the third end wall. The first protrusion is arranged on a side of the second end wall away from the third end wall, one end of the support member is connected to the third end wall, and a second through hole for the circuit to pass through is opened on the peripheral wall.

[0024] In the above solution, the box body is a split structure including the second end wall, the third end wall and the peripheral wall. On the one hand, the processing difficulty of the box body is reduced, and the manufacturing cost of the box body is reduced; on the other hand, the split structure facilitates the placement of the battery cell into the box body.

[0025] In some embodiments, the box body further includes a pressure relief mechanism disposed on the peripheral wall, and the pressure relief mechanism is configured to be actuated to release the pressure inside the box body when the internal pressure or temperature of the box body reaches a threshold value.

[0026] In the above solution, the pressure relief mechanism is used to release the pressure inside the box body when the internal pressure or temperature of the box body reaches a threshold value, which is beneficial to improving the reliability of the battery.

[0027] In some embodiments, the second end wall has a first guide portion, and the first guide portion is used to guide rainwater to flow toward the edge of the second end wall.

[0028] In the above solution, the first guide portion is used to guide rainwater to leave the second end wall from the edge of the second end wall, thereby reducing the risk of water entering the box body due to rainwater and fog water staying on the second end wall in rainy and foggy weather.

[0029] In a second aspect, an embodiment of the present application provides an energy storage device, comprising the battery provided in the embodiment of the first aspect.

[0030] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A schematic diagram of the structure of a battery provided in some embodiments of the present application;

[0033] Figure 2 A schematic diagram of a structure in which batteries are stacked along a first direction, provided in some embodiments of the present application;

[0034] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0035] Figure 4 for Figure 1 The enlarged view of point B in the middle;

[0036] Figure 5 for Figure 2 Enlarged view of point C in the middle;

[0037] Figure 6 A three-dimensional exploded view of a battery provided in some embodiments of the present application;

[0038] Figure 7 for Figure 6 Enlarged view of point D in the middle.

[0039] Icon: 100-battery;

[0040] 10-box body; 11-box body; 11A-first side; 11B-first convex part; 11C-third side; 111-box shell; 112-box cover; 113-third end wall; 114-second end wall; 114A-first part; 114B-second part; 114C-first guide part; 114D-second groove; 115-peripheral wall; 115A-second through hole; 115B-pressure relief mechanism; 115C-reinforcement rib; 116-lifting member; 12-support member; 12A-second side; 12B-first groove; 12C-second guide part; 12D-fourth side; 121-connecting member; 121A-first end wall; 121B-side wall; 121C-first through hole; 121D-third through hole; 122-first fastener;

[0041] 20-battery cell;

[0042] X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0045] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0048] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0049] The term "plurality" used in the present application refers to two or more (including two).

[0050] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0051] Battery cells include but are not limited to lithium-ion battery cells, sodium-ion battery cells, sodium-lithium-ion battery cells, lithium metal battery cells, sodium metal battery cells, lithium-sulfur battery cells, magnesium-ion battery cells, nickel-hydrogen battery cells, nickel-cadmium battery cells, lead-acid battery cells, etc.

[0052] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and removed between the positive electrode and the negative electrode. The separator is set between the positive electrode and the negative electrode to reduce the risk of short circuit between the positive and negative electrodes, while allowing active ions to pass through.

[0053] In some embodiments, the positive electrode may be a positive electrode sheet, and the positive electrode sheet may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0054] As an example, the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is disposed on either or both of the two facing surfaces of the positive electrode current collector.

[0055] As an example, the positive electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. may be used. The composite current collector may include a polymer material base and a metal layer. The composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0056] As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, the present application is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for batteries may also be used. These positive electrode active materials may be used alone or in combination of two or more.

[0057] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0058] As an example, the negative electrode current collector may be a metal foil, a foamed metal or a composite current collector. For example, as the metal foil, aluminum or stainless steel, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc., treated with silver surface, may be used. The foamed metal may be a nickel foam, a copper foam, an aluminum foam, an alloy foam, etc. The composite current collector may include a polymer material base and a metal layer. The composite current collector may be formed by forming a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0059] As an example, the negative electrode sheet may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0060] As an example, the negative electrode current collector has two surfaces facing each other in its thickness direction, and the negative electrode active material is disposed on either or both of the two facing surfaces of the negative electrode current collector.

[0061] As an example, the negative electrode active material may adopt the negative electrode active material for battery cells known in the art. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, lithium titanate, etc. The silicon-based material may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. The tin-based material may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, the present application is not limited to these materials, and other traditional materials that can be used as negative electrode active materials for batteries may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0062] In some embodiments, the material of the positive electrode current collector may be aluminum, and the material of the negative electrode current collector may be copper.

[0063] In some embodiments, the electrode assembly is a wound structure, wherein the positive electrode sheet and the negative electrode sheet are wound into the wound structure.

[0064] In some embodiments, the electrode assembly is a laminate structure.

[0065] A battery is a device that integrates multiple battery cells in a box. Multiple battery cells are connected in series, parallel or mixed to form a storage device. Energy storage devices can be used in power systems to store excess electricity during the off-peak period to supplement the peak period.

[0066] When batteries are installed to form energy storage devices, they are limited by the installation space. For example, some installation spaces are larger in height, so multiple batteries need to be stacked in height; some installation spaces are larger in length or width, so multiple batteries need to be laid flat. In the related art, the stacked battery 100 has a different structure from the laid-flat battery, so it is necessary to select batteries with different structures to save installation space.

[0067] In view of this, in order to enable the battery to be flexibly adapted to different installation spaces, an embodiment of the present application provides a battery, wherein the battery housing has a first side and a second side that are arranged opposite to each other, and the first side is provided with a first convex portion, and the second side is provided with a first groove. When multiple batteries are stacked, the first groove accommodates the first convex portion of the adjacent battery, so that the first groove and the first convex portion of the adjacent battery form a structural limit with each other, thereby limiting the relative movement of adjacent batteries in a direction perpendicular to the stacking direction, thereby facilitating the stacking of multiple batteries. At the same time, multiple batteries can be laid on the ground. Thereby, a flexible configuration of multiple batteries is achieved to adapt to different installation spaces.

[0068] The specific structure of the battery is described in detail below with reference to the accompanying drawings.

[0069] Reference Figure 1 and Figure 2 , and please refer to Figure 3 , Figure 1 A schematic diagram of the structure of a battery 100 provided in some embodiments of the present application is shown in FIG. Figure 2 A schematic diagram of a structure of a battery 100 provided in some embodiments of the present application, which is stacked along a first direction X, Figure 3 for Figure 2 Enlarged view of point A in the figure. The embodiment of the present application provides a battery 100, including a case 10 and a battery cell (not shown in the figure). The battery cell (not shown in the figure) is accommodated in the case 10. Along the first direction X, the case 10 has a first side 11A and a second side 12A arranged opposite to each other. The first side 11A is provided with a first convex portion 11B, and the second side 12A is provided with a first groove 12B. The first groove 12B is used to accommodate the first convex portion 11B of adjacent batteries 100 when multiple batteries 100 are stacked along the first direction X.

[0070] The housing 10 is a component of the battery 100 for providing a stable and sealed working environment for the battery cells (not shown in the figure).

[0071] Optionally, the box body 10 can be made of a material with a certain hardness and strength (such as aluminum alloy, steel), so that the box body 10 is not easily deformed when squeezed or collided, which is beneficial to reducing the degree of damage to the battery 100 caused by external force collision.

[0072] The first side 11A and the second side 12A are two sides of the box body 10 that are oppositely arranged along the first direction X.

[0073] It can be understood that when the battery 100 is placed on the ground, the second side 12A can be used to abut against the ground.

[0074] The first direction X may be parallel to the height direction of the box 10 , and the first direction X may also be parallel to the gravity direction, the second direction Y may be parallel to the width direction of the box 10 , and the third direction Z may be parallel to the length direction of the box 10 .

[0075] The first protrusion 11B is a portion of the box body 10 that protrudes from the first side 11A.

[0076] In some embodiments, the first side 11A is a plane perpendicular to the first direction X, and the first protrusion 11B is a boss protruding from the first side 11A along the first direction X.

[0077] The first groove 12B is a portion of the first protrusion 11B of the adjacent battery 100 when the plurality of batteries 100 are stacked along the first direction X.

[0078] Exemplarily, the second side 12A is recessed toward the first side 11A to form a first groove 12B.

[0079] It can be understood that the first groove 12B should be arranged corresponding to the first protrusion 11B.

[0080] In some embodiments, on a plane perpendicular to the first direction X, the orthographic projection of the first protrusion 11B should fall within the orthographic projection of the first groove 12B, so that when multiple batteries 100 are stacked along the first direction X, the line connecting the centers of the multiple batteries 100 is a straight line, and the straight line is parallel to the first direction X, thereby improving the reliability of stacking the multiple batteries 100 along the first direction X.

[0081] In the above scheme, the first side 11A is provided with a first convex portion 11B, the second side 12A is provided with a first groove 12B, and the first side 11A and the second side 12A are arranged opposite to each other along the first direction X. When multiple batteries 100 are stacked along the first direction X, the first groove 12B accommodates the first convex portion 11B of the adjacent battery 100, so that the first groove 12B and the first convex portion 11B of the adjacent battery 100 form a structural limit between each other, thereby limiting the relative movement of the adjacent batteries 100 in a direction perpendicular to the first direction X, thereby facilitating the stacking of multiple batteries 100 along the first direction X. At the same time, multiple batteries 100 can be laid on the ground along the second direction Y and the third direction Z. Thereby, a flexible configuration of multiple batteries 100 is achieved, thereby adapting to different installation spaces.

[0082] According to some embodiments of this application, please continue to refer to Figure 1 and Figure 2 The box 10 includes a box body 11 and a support member 12 arranged along a first direction X. One end of the support member 12 is connected to the box body 11 , and the other end of the support member 12 is provided with a first groove 12B. The first convex portion 11B is provided on a side of the box body 11 away from the support member 12 .

[0083] The box body 11 is a shell in the box body 10 for accommodating battery cells (not shown in the figure).

[0084] In some embodiments, the box body 11 includes a box shell 111 and a box cover 112, the box shell 111 and the box cover 112 are connected to each other, and the box shell 111 and the box cover 112 jointly define a closed space for accommodating a battery cell (not shown in the figure). Optionally, the box shell 111 and the box cover 112 can be hollow structures with one side open, and the open side of the box shell 111 and the open side of the box cover 112 cooperate with each other, so that the box shell 111 and the box cover 112 jointly define a closed space; or, the box shell 111 can be a hollow structure with one end open, and the box cover 112 can be a plate-like structure, and the box cover 112 is arranged on the open side of the box shell 111, so that the box shell 111 and the box cover 112 jointly define a closed space.

[0085] Optionally, the box shell 111 and the box cover 112 can both be made of a material with a certain hardness and strength (such as aluminum alloy, steel), so that the box body 10 is not easily deformed when squeezed or collided, which is beneficial to reducing the degree of damage to the battery 100 caused by external force collision.

[0086] The support member 12 is a component used to separate the ground and the box body 11 along the first direction X, or to separate the box body 11 from the box body 11 .

[0087] Exemplarily, the support member 12 may be a support leg, a support frame or the like.

[0088] Optionally, the support member 12 may be made of hollow steel materials such as square tubes and channel steels, so as to reduce the weight of the support member 12 while ensuring that the support member 12 has a certain strength.

[0089] Optionally, the support member 12 may be connected to the box body 11 by welding, or the support member 12 may be connected to the box body 11 by bolting, which is not limited in the embodiments of the present application.

[0090] The first direction X may be parallel to the height direction of the box body 11 , and the first direction X may also be parallel to the gravity direction, the second direction Y may be parallel to the width direction of the box body 11 , and the third direction Z may be parallel to the length direction of the box body 11 .

[0091] In the embodiment where the support member 12 is a square tube, the square tube has two side surfaces arranged opposite to each other in the second direction Y, and has two side surfaces arranged opposite to each other in the third direction Z. The support member 12 may have two first grooves 12B at one end away from the box body 11, the middle parts of the two first grooves 12B are connected, and the two first grooves 12B extend respectively along the second direction Y and the third direction Z. This facilitates the determination of the extension direction of the first grooves 12B during the assembly process of the support member 12 and the box body 11, thereby reducing the risk of assembly errors.

[0092] In the above scheme, the box 10 includes a box body 11 and a support member 12 arranged along the first direction X, and the first groove 12B is arranged at one end of the support member 12 away from the box body 11, and the first protrusion 11B is arranged on the side of the box body 11 away from the support member 12.

[0093] Thus, when the end of the support member 12 away from the box body 11 abuts against the ground, along the first direction X, the support member 12 is located between the ground and the box body 11, so that along the first direction X, there is a gap between the box body 11 and the ground, thereby reducing the risk of water and dust on the ground entering the box body 11. It is also convenient for the battery 100 to dissipate heat. This is beneficial to reducing the operating temperature of the battery 100 and improving the reliability of the battery 100.

[0094] When a plurality of batteries 100 are stacked along the first direction X, the support member 12 is located between the box body 11 and the adjacent battery 100 and the adjacent box body 11 along the first direction X. Thus, there is a gap between the box bodies 11 along the first direction X, so that the heat dissipation of the battery 100 is convenient, which is beneficial to reducing the operating temperature of the battery 100 and improving the reliability of the battery 100.

[0095] According to some embodiments of this application, please continue to refer to Figure 1 and Figure 2 , and refer to Figure 3 The first protrusion 11B extends along the second direction Y, and the first groove 12B penetrates the support member 12 along the second direction Y.

[0096] “The first convex portion 11B extends along the second direction Y” may be understood as that the length direction of the first convex portion 11B is parallel to the second direction Y.

[0097] In some embodiments, the first convex portion 11B is in the shape of a cuboid, the length direction of the first convex portion 11B is parallel to the second direction Y, the width direction of the first convex portion 11B is parallel to the third direction Z, and the height direction of the first convex portion 11B is parallel to the first direction X.

[0098] Optionally, the first protrusion 11B may be connected to the box body 11 by welding, or the first protrusion 11B may be connected to the box body 11 by bolting, which is not limited in the embodiments of the present application.

[0099] Exemplarily, both ends of the first protrusion 11B do not protrude beyond two side surfaces of the box body 11 that are oppositely arranged in the second direction Y, so as to reduce the risk of the first protrusion 11B of the battery 100 being bumped during transportation.

[0100] In some embodiments, two ends of the first protrusion 11B are flush with two side surfaces of the box body 11 that are opposite to each other in the second direction Y, respectively.

[0101] “The first groove 12B penetrates the support member 12 along the second direction Y” can be understood as that the two ends of the first groove 12B are respectively located on two side surfaces of the support member 12 that are oppositely arranged in the second direction Y.

[0102] Optionally, the first groove 12B has two second guide portions 12C arranged opposite to each other in the third direction Z, and the distance between the two guide portions gradually decreases in the direction close to the box body 11. Thus, when a plurality of batteries 100 are stacked in the first direction X, the first protrusion 11B can be guided to be embedded in the first groove 12B.

[0103] In the above scheme, the first protrusion 11B extends along the second direction Y so that the first protrusion 11B can play a role in structural reinforcement, thereby increasing the bearing capacity of the side of the box body 11 away from the support member 12, reducing the deflection of the side of the box body 11 away from the support member 12, and thereby increasing the reliability of the box body 11 when multiple batteries 100 are stacked along the first direction X.

[0104] According to some embodiments of this application, please continue to refer to Figure 1 , the first convex parts 11B are multiple and spaced apart along the third direction Z. There are multiple support members 12. The multiple support members 12 are multiple rows arranged along the third direction Z corresponding to the multiple first convex parts 11B, and each row of support members 12 is multiple and spaced apart along the second direction Y, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0105] In some embodiments, the first protrusions 11B are two arranged along the third direction Z. Thus, the side of the box body 11 away from the support member 12 is further structurally strengthened. The side of the box body 11 away from the first protrusion 11B is rectangular, and there are four support members 12. The four support members 12 are arranged in two rows along the third direction Z. The two rows of support members 12 correspond to the two first protrusions 11B respectively, and each row of support members 12 is two spaced apart along the second direction Y. The four support members 12 are respectively close to the four corners of the side of the box body 11 away from the first protrusion 11B. Thus, a more uniform support force is provided to the box body 11, reducing the risk of the box body 11 being crushed when multiple batteries 100 are stacked along the first direction X. At the same time, when the support member 12 transmits pressure to the adjacent battery 100, the pressure is more evenly distributed on the box body 11 of the adjacent battery 100, which is beneficial to improving the reliability of the battery 100 when it is stacked along the first direction X.

[0106] In the above scheme, the first protrusions 11B are multiple and spaced apart along the third direction Z, thereby further strengthening the structure of the side of the box body 11 away from the support member 12. The support member 12 is arranged in multiple rows corresponding to the multiple first protrusions 11B along the third direction Z, and each row of support members 12 is multiple and spaced apart along the second direction Y. Therefore, when multiple batteries 100 are stacked along the first direction X, the gravity of the battery 100 can be more evenly distributed to the first side 11A of the adjacent battery 100. This is beneficial to improving the reliability of the battery 100 when it is stacked along the first direction X.

[0107] According to some embodiments of this application, please continue to refer to Figure 1 and Figure 2 , and please refer to Figure 4 and Figure 5 , Figure 4 for Figure 1 The enlarged view of point B in the middle, Figure 5 for Figure 2 The box 10 further includes a connecting member 121, which includes a first end wall 121A and a side wall 121B. The thickness direction of the first end wall 121A is parallel to the first direction X, and the thickness direction of the side wall 121B is parallel to the second direction Y. The side wall 121B is connected to the support member 12, and the first end wall 121A is used to connect to the first protrusion 11B of the adjacent battery 100 when multiple batteries 100 are stacked along the first direction X.

[0108] The connecting member 121 is a component that connects the supporting member 12 and the first protrusion 11B, and the connecting member 121 is a bent structure.

[0109] The first end wall 121A is a portion of the connecting member 121 for connecting to the supporting member 12 , and the side wall 121B is a portion of the connecting member 121 for connecting to the first protrusion 11B.

[0110] The first end wall 121A and the side wall 121B may be integrally formed by stamping, or the first end wall 121A and the side wall 121B may be connected to each other by welding.

[0111] In some embodiments, in the second direction Y, the support member 12 has a fourth side 12D, and the side surface of the side wall 121B away from the first end wall 121A is connected to the fourth side 12D.

[0112] In the embodiment where the four support members 12 are respectively close to the four corners of the side surface of the box body 11 away from the first protrusion 11B, the side where two support members 12 in each column of support members 12 face each other is the fourth side 12D.

[0113] Optionally, the side wall 121B may be connected to the support member 12 by welding, or the side wall 121B may be connected to the support member 12 by bolting.

[0114] In the above scheme, the side wall 121B of the connecting member 121 is connected to the support member 12, and the first end wall 121A of the connecting member 121 is connected to the first protrusion 11B of the adjacent battery 100, so that the support member 12 is connected to the first protrusion 11B through the connecting member 121, thereby limiting the relative movement between adjacent batteries 100 when multiple batteries 100 are stacked along the first direction X.

[0115] According to some embodiments of this application, please continue to refer to Figure 1 and Figure 2 , and please refer to Figure 4 and Figure 5 , along the first direction X, the first end wall 121A does not protrude from the bottom wall of the first groove 12B.

[0116] In the embodiment where the side wall 121B is connected to the support member 12 by bolts, the side wall 121B is provided with a third through hole 121D, and the third through hole 121D penetrates the side wall 121B along the second direction Y. The third through hole 121D is a waist-shaped hole, and the extension direction of the waist-shaped hole is parallel to the first direction X. The fourth side 12D is provided with a second threaded hole (not shown in the figure), and the bolt is used to pass through the third through hole 121D and threadedly cooperate with the second threaded hole (not shown in the figure) to connect the side wall 121B and the fourth side 12D. In this way, when the bolt is not locked with the second threaded hole (not shown in the figure), the side wall 121B can move relative to the bolt along the first direction X through the third through hole 121D, and thus move relative to the fourth side 12D along the first direction X to adjust the relative position of the first end wall 121A and the first groove 12B.

[0117] In the above solution, the first end wall 121A of the connector 121 does not protrude from the bottom wall of the first groove 12B, thereby reducing the risk of the first end wall 121A of the connector 121 interfering with the abutment between the bottom wall of the first groove 12B and the first protrusion 11B when multiple batteries 100 are stacked along the first direction X.

[0118] According to some embodiments of this application, please continue to refer to Figure 1 and Figure 2 , and please refer to Figure 4 and Figure 5 The battery 100 further includes a first fastener 122 , and the first end wall 121A is connected to the first protrusion 11B of the adjacent battery 100 via the first fastener 122 .

[0119] The first fastener 122 is a component used to connect the first end wall 121A and the first protrusion 11B. The first fastener 122 may be a pin, a bolt, or the like.

[0120] In the above solution, the first end wall 121A is connected to the first protrusion 11B of the adjacent battery 100 via the first fastener 122 , and the first fastener 122 may connect the first end wall 121A to the first protrusion 11B along the first direction X, thereby facilitating the assembly of the adjacent batteries 100 .

[0121] According to some embodiments of this application, please continue to refer to Figure 1 and Figure 2 , and please refer to Figure 4 and Figure 5 The first protrusion 11B has a third side 11C away from the box body 11, the first end wall 121A is provided with a first through hole 121C, the third side 11C is provided with a first threaded hole (not shown in the figure), and the first fastener 122 is used to pass through the first through hole 121C when multiple batteries 100 are stacked along the first direction X, and connect the first threaded holes (not shown in the figure) of adjacent batteries 100, so as to connect the first end wall 121A and the first protrusion 11B of the adjacent battery 100.

[0122] The third side 11C is a side of the first protrusion 11B away from the box body 11 along the first direction X. The third side 11C may be a plane perpendicular to the first direction X.

[0123] The first through hole 121C is a hole provided in the first end wall 121A to facilitate the penetration of the first fastener 122. The first through hole 121C may penetrate the first end wall 121A along the thickness direction of the first end wall 121A. For example, the first through hole 121C may penetrate the first end wall 121A along the first direction X.

[0124] The first threaded hole (not shown) is a hole provided in the first protrusion 11B for connecting with the first fastener 122. The first fastener 122 is provided with threads corresponding to the first threaded hole (not shown) so that the first fastener 122 is threadedly matched with the first protrusion 11B.

[0125] In some embodiments, the first through hole 121C is a waist-shaped hole, and the extension direction of the first through hole 121C is parallel to the second direction Y, so that the first fastener 122 passes through the first through hole 121C and is threadedly matched with the first threaded hole (not shown in the figure).

[0126] In the above solution, the first fastener 122 passes through the first through hole 121C and is connected to the first threaded hole (not shown in the figure), so as to facilitate the assembly and disassembly of adjacent batteries 100.

[0127] According to some embodiments of this application, please continue to refer to Figure 6 and Figure 7 , Figure 6 A three-dimensional exploded view of a battery 100 provided in some embodiments of the present application, Figure 7 for Figure 6 The battery 100 further includes a lifting member 116 , which is used to connect with a lifting device, and the first threaded hole (not shown in the figure) is threadedly matched with the lifting member 116 .

[0128] Exemplarily, the lifting member 116 may be a lifting ring, a lifting hook or the like.

[0129] In an embodiment where the batteries 100 need to be stacked along the first direction X, the lifting member 116 can be connected to the battery 100 through a first threaded hole (not shown in the figure), and the lifting device is connected to the lifting member 116 through a lifting rope to drive the battery 100 to move along the first direction X and be located on a side of the stacked batteries 100 away from the ground in the first direction X. The lifting member 116 can then be disassembled to facilitate the connection of the first fastener 122 of the adjacent battery 100 with the first threaded hole (not shown in the figure).

[0130] In the above scheme, the first threaded hole (not shown in the figure) is threadedly matched with the lifting piece 116, so that when it is necessary to lift the battery 100 along the first direction X, the lifting piece 116 is connected to the box body 11 through the first threaded hole (not shown in the figure) to facilitate the lifting equipment to lift the battery 100.

[0131] According to some embodiments of this application, please continue to refer to Figure 6 The box body 11 includes a second end wall 114 and a third end wall 113 that are arranged opposite to each other along the first direction X, and a peripheral wall 115 connecting the second end wall 114 and the third end wall 113. The first protrusion 11B is arranged on the side of the second end wall 114 away from the third end wall 113, one end of the support member 12 is connected to the third end wall 113, and a second through hole 115A for the circuit to pass through is opened on the peripheral wall 115.

[0132] The third end wall 113 is a wall in the box body 11 used for connecting with the support member 12 .

[0133] The second end wall 114 is a wall of the box body 11 where the first protrusion 11B is provided.

[0134] The peripheral wall 115 is a wall along the first direction X, located between the second end wall 114 and the third end wall 113 , and connecting the second end wall 114 and the third end wall 113 .

[0135] In some embodiments, a reinforcing rib 115C may be provided on the peripheral wall 115 , and two ends of the reinforcing rib 115C in the first direction X respectively abut against parts of the second end wall 114 and the third end wall 113 , thereby playing a role in structural reinforcement.

[0136] In an embodiment in which the box body 11 includes a box shell 111 and a box cover 112, the second end wall 114 and the peripheral wall 115 can be combined to form the box shell 111, and the box cover 112 can be the third end wall 113; or, the third end wall 113 and the peripheral wall 115 can be combined to form the box shell 111, and the box cover 112 can be the second end wall 114.

[0137] The second through hole 115A is a hole provided in the peripheral wall 115 for facilitating the wiring. The second through hole 115A may penetrate the peripheral wall 115 along the thickness direction of the peripheral wall 115, for example, the second through hole 115A may penetrate the peripheral wall 115 along the second direction Y, or the second through hole 115A may penetrate the peripheral wall 115 along the first direction X.

[0138] The circuits may include, but are not limited to, high and low voltage circuits and liquid cooling lines.

[0139] In the above solution, the box body 11 is a split structure including the second end wall 114, the third end wall 113 and the peripheral wall 115. On the one hand, the processing difficulty of the box body 11 is reduced, and the manufacturing cost of the box body 11 is reduced; on the other hand, the split structure facilitates the placement of the battery cell (not shown in the figure) into the box body 11.

[0140] According to some embodiments of this application, please continue to refer to Figure 6 The box body 11 further includes a pressure relief mechanism 115B disposed on the peripheral wall 115 , and the pressure relief mechanism 115B is configured to be actuated to release the pressure inside the box body 11 when the internal pressure or temperature of the box body 11 reaches a threshold value.

[0141] The pressure relief mechanism 115B refers to an element or component that is actuated to release the internal pressure or temperature of the battery 100 when the internal pressure or temperature reaches a predetermined threshold. The threshold design varies according to different design requirements. The pressure relief mechanism 115B can take the form of an explosion-proof valve, an explosion-proof disk, an air valve, a pressure relief valve or a safety valve, and can specifically adopt a pressure-sensitive or temperature-sensitive element or structure, that is, when the internal pressure or temperature of the battery 100 reaches a predetermined threshold, the pressure relief mechanism 115B performs an action or a weak structure provided in the pressure relief mechanism 115B is destroyed, thereby forming an opening or channel for the internal pressure or temperature to be released.

[0142] The "actuation" mentioned in this application means that the pressure relief mechanism 115B is in action or activated to a certain state, so that the internal pressure and temperature of the battery 100 can be released. The action produced by the pressure relief mechanism 115B may include but is not limited to: at least a part of the pressure relief mechanism 115B is broken, shattered, torn or opened, etc. When the pressure relief mechanism 115B is actuated, the high-temperature and high-pressure substances inside the battery 100 will be discharged from the actuated part as emissions. In this way, the battery 100 can be depressurized and cooled under controllable pressure or temperature, thereby avoiding potential more serious accidents.

[0143] In some embodiments, the pressure relief mechanism 115B and the second through hole 115A are respectively located on two side surfaces of the peripheral wall 115 that are opposite to each other in the second direction Y. In other embodiments, the pressure relief mechanism 115B and the second through hole 115A are respectively located on two side surfaces of the peripheral wall 115 that are opposite to each other in the third direction Z. This reduces the risk of the discharge of the pressure relief mechanism 115B damaging the circuit.

[0144] In the above solution, the pressure relief mechanism 115B is used to release the pressure inside the box body 11 when the internal pressure or temperature of the box body 11 reaches a threshold value, which is beneficial to improving the reliability of the battery 100 .

[0145] According to some embodiments of this application, please continue to refer to Figure 6 The second end wall 114 has a first guide portion 114C, and the first guide portion 114C is used to guide rainwater to move toward the edge of the second end wall 114.

[0146] The first guide portion 114C is a portion of the surface of the second end wall 114 that is inclined toward the third wall.

[0147] Exemplarily, the first guide portion 114C is located on a side of the second end wall 114 away from the third end wall 113, and along the direction approaching the edge of the second end wall 114, the distance between the first guide portion 114C and the third end wall 113 in the first direction X gradually decreases to guide rainwater to move toward the edge of the second end wall 114.

[0148] In some embodiments, a second groove 114D extending along the second direction Y is formed on the second end wall 114. On a plane perpendicular to the first direction X, the orthographic projection of the second groove 114D overlaps at least partially with the orthographic projection of the first guide portion 114C. At least a portion of the first convex portion 11B is accommodated in the second groove 114D, so that the second groove 114D limits the structure of the first convex portion 11B.

[0149] In the embodiment where the second end wall 114 and the peripheral wall 115 are enclosed to form the box shell 111, and the box cover 112 is the third end wall 113, the second end wall 114 may include a first portion 114A and a second portion 114B, wherein the first portion 114A is integrally formed with the peripheral wall 115 to improve the sealing performance at the connection between the second end wall 114 and the peripheral wall 115, and the first guide portion 114C is located on the side of the second portion 114B away from the first portion 114A. On a plane perpendicular to the first direction X, the orthographic projection of the second portion 114B covers the orthographic projection of the first portion 114A, and covers the orthographic projections of the peripheral wall 115 and the third end wall 113, so as to reduce the probability of rainwater dripping from the edge of the second portion 114B and falling on the peripheral wall 115 and the third end wall 113.

[0150] In the above solution, the first guide portion 114C is used to guide rainwater to leave the second end wall 114 from the edge of the second end wall 114, thereby reducing the risk of water entering the box body 11 due to rainwater and fog water staying on the second end wall 114 in rainy and foggy weather.

[0151] Some embodiments of the present application further provide an energy storage device, including the battery 100 provided above. In the energy storage device, the battery 100 can be stacked along a first direction X, or arranged along a second direction Y and / or a third direction Z in the energy storage device.

[0152] Please refer to Figure 1-Figure 7 The embodiment of the present application provides a battery 100 including a box body 10 and a battery cell 20 .

[0153] The box body 10 includes a box body 11 and a support member 12 . The box body 11 includes a second end wall 114 and a third end wall 113 that are oppositely arranged along the first direction X, and a peripheral wall 115 connecting the second end wall 114 and the third end wall 113 .

[0154] The second end wall 114 , the third end wall 113 and the peripheral wall 115 are arranged to form an accommodation space for accommodating the battery cell 20 .

[0155] In some embodiments, the peripheral wall 115 is provided with a pressure relief mechanism 115B and a second through hole 115A on two opposite sides in the second direction Y. In other embodiments, the peripheral wall 115 is provided with a pressure relief mechanism 115B and a second through hole 115A on two opposite sides in the third direction Z.

[0156] A first convex portion 11B is disposed on a side of the second end wall 114 away from the third end wall 113 . There are two first convex portions 11B spaced apart along the third direction Z. Each first convex portion 11B extends along the second direction Y.

[0157] The first protrusion 11B has a third side 11C facing away from the second end wall 114 . The third side 11C is provided with a first threaded hole (not shown in the figure) that can be threadedly matched with the lifting member 116 .

[0158] There are four support members 12, and the four support members 12 are arranged in two rows along the third direction Z. The two rows of support members 12 correspond to the two first convex portions 11B respectively. There are two support members 12 in each row arranged at intervals along the second direction Y. One end of each support member 12 is connected to a side of the third end wall 113 away from the second end wall 114, and the other end of the support member 12 is provided with a first groove 12B. The first groove 12B penetrates the support member 12 along the second direction Y.

[0159] The box body 10 further includes a connecting member 121 and a first fastening member 122 .

[0160] The connecting member 121 includes a first end wall 121A and a side wall 121B. The thickness direction of the first end wall 121A is parallel to the first direction X, and the thickness direction of the side wall 121B is parallel to the second direction Y.

[0161] Two support members 12 in each column of support members 12 have fourth sides 12D facing each other. The side of the wall away from the first end wall 121A is connected to the fourth side 12D.

[0162] A first through hole 121C is provided on the first end wall 121A, and a first threaded hole (not shown in the figure) is provided on the third side 11C. The first fastener 122 is used to pass through the first through hole 121C and connect the first threaded holes (not shown in the figure) of adjacent batteries 100 when multiple batteries 100 are stacked along the first direction X, so as to connect the first end wall 121A with the first protrusion 11B of the adjacent battery 100.

[0163] In the above solution, the first groove 12B and the first protrusion 11B of the adjacent battery 100 form a structural limit between each other, thereby limiting the relative movement of the adjacent batteries 100, thereby facilitating the stacking of multiple batteries 100 along the first direction X. At the same time, multiple batteries 100 can be laid on the ground along the second direction Y and the third direction Z. Thereby, a flexible configuration of multiple batteries 100 is achieved, thereby adapting to different installation spaces.

[0164] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0165] The above embodiments are only used to illustrate the technical solution of the present application and are not used to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery, characterized in that: include: A box body, along a first direction, the box body has a first side and a second side that are oppositely arranged; A battery cell is contained in the box; The first side is provided with a first convex portion, and the second side is provided with a first concave portion, and the first concave portion is used to accommodate the first convex portion of the adjacent battery when a plurality of the batteries are stacked along the first direction.

2. The battery according to claim 1, characterized in that The box body includes a box body and a support member arranged along the first direction, one end of the support member is connected to the box body, the other end of the support member is provided with the first groove, and the first protrusion is provided on a side of the box body away from the support member.

3. The battery according to claim 2, characterized in that The first convex portion extends along a second direction; The first groove penetrates the support member along the second direction, and the second direction is perpendicular to the first direction.

4. The battery according to claim 3, characterized in that The first protrusions are multiple and spaced apart along the third direction; There are multiple support members, and the multiple support members are arranged in multiple rows along the third direction corresponding to the multiple first protrusions. The support members in each row are multiple and arranged at intervals along the second direction. The first direction, the second direction and the third direction are perpendicular to each other.

5. The battery according to claim 3, characterized in that The box body further includes a connecting member, the connecting member includes a first end wall and a side wall, the thickness direction of the first end wall is parallel to the first direction, and the thickness direction of the side wall is parallel to the second direction; The side wall is connected to the support member, and the first end wall is used to connect to the first protrusion of the adjacent battery when a plurality of the batteries are stacked along the first direction.

6. The battery according to claim 5, characterized in that Along the first direction, the first end wall does not protrude from the bottom wall of the first groove.

7. The battery according to claim 5, characterized in that The battery further includes a first fastener, and the first end wall is connected to the first protrusion of the adjacent battery through the first fastener.

8. The battery according to claim 7, characterized in that The first protrusion has a third side away from the box body, the first end wall is provided with a first through hole, the third side is provided with a first threaded hole, and the first fastener is used to pass through the first through hole and connect the first threaded holes of adjacent batteries when multiple batteries are stacked along the first direction, so as to connect the first end wall and the first protrusion of the adjacent battery.

9. The battery according to claim 8, characterized in that The battery further comprises a lifting member, wherein the lifting member is used to be connected to a lifting device, and the first threaded hole is threadably matched with the lifting member.

10. The battery according to claim 3, characterized in that The box body comprises a second end wall and a third end wall which are arranged opposite to each other along the first direction, and a peripheral wall connecting the second end wall and the third end wall; The first protrusion is arranged on a side of the second end wall away from the third end wall, one end of the support member is connected to the third end wall, and a second through hole for the circuit to pass through is opened on the peripheral wall.

11. The battery according to claim 10, characterized in that The box body further includes a pressure relief mechanism disposed on the peripheral wall, wherein the pressure relief mechanism is configured to be actuated to release the pressure inside the box body when the internal pressure or temperature of the box body reaches a threshold value.

12. The battery according to claim 10, characterized in that The second end wall has a first guide portion, and the first guide portion is used to guide rainwater to flow toward the edge of the second end wall.

13. An energy storage device, characterized in that: The invention comprises a battery as claimed in any one of claims 1 to 12, wherein the battery is used for providing electrical energy.

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