Battery and energy storage apparatus

Abstract

A battery (100) and an energy storage apparatus (1000). The energy storage apparatus (1000) comprises supporting pieces (1200), a battery pack (1100), and a plurality of bearing pieces (1300), the plurality of bearing pieces (1300) being mounted on a side portion of the supporting pieces (1200) in a spaced apart manner in a first direction, and each bearing piece (1300) comprising a bearing portion (1310); the battery pack (1100) comprises a plurality of batteries (100), the plurality of batteries (100) being sequentially mounted on the bearing portion (1310) of the bearing pieces (1300) in the first direction, and the bearing portion (1310) being positioned between two adjacent batteries (100); each battery (100) comprises a casing (20) and a battery cell (10) arranged within the casing (20); the two adjacent batteries (100) are divided into a first battery (101) and a second battery (102), the bearing pieces (1300) for supporting the first battery (101) being first bearing pieces (1301), and the bearing pieces (1300) for supporting the second battery (102) being second bearing pieces (1302); and the casing (20) of the first battery (101), facing a side portion of the second battery (102), is provided with a clearance structure (213) for creating clearance for the bearing portion (1310) of the second bearing pieces (1302). The described structure helps improve the internal space of the casing (20), and the capacitance of the battery (100) and the energy storage apparatus (1000).

Description

Battery and energy storage device

[0001] The present application claims priority to the Chinese patent application No. 202420714293.9, filed on April 8, 2024 in the China Patent Office and entitled "Battery and energy storage device", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application belongs to the technical field of energy storage, and in particular relates to a battery and an energy storage device. BACKGROUND

[0003] New power systems mainly based on new energy are becoming an important choice for sustainable energy development. With the rapid development of new energy technology, energy storage devices are being used more and more widely.

[0004] A plurality of batteries and a plurality of supporting members are usually provided in an energy storage device. The plurality of supporting members are arranged at intervals along the height direction of the energy storage device, and the plurality of batteries are installed on each supporting member in sequence, so that the plurality of batteries are arranged in layers along the height direction of the energy storage device. A gap is usually reserved between the batteries to avoid interference between the batteries and the supporting members. However, under the condition that the height of the energy storage device is fixed, the setting of the gap will limit the height of the battery, which is not conducive to increasing the internal space of the battery.

[0005] The above statements are only used to provide background technical information related to the present application, and do not necessarily constitute the prior art.

[0006] CONTENT OF THE APPLICATION

[0007] The purpose of the embodiments of the present application is to provide a battery and an energy storage device, which can solve the problem that the internal space of the battery is not easy to increase in the related art energy storage device.

[0008] The technical solution adopted by the embodiments of the present application is:

[0009] In a first aspect, an energy storage device is provided, which includes a supporting member, a battery pack and a plurality of supporting members. The plurality of supporting members are installed at intervals on the side of the supporting member along a first direction. Each supporting member includes a supporting part. The battery pack includes a plurality of batteries. The plurality of batteries are installed in sequence on the supporting parts of each supporting member along the first direction. The supporting part is located between adjacent two batteries. Each battery includes a box body and a battery monomer provided in the box body. The adjacent two batteries are a first battery and a second battery. The supporting member for supporting the first battery is a first supporting member, and the supporting member for supporting the second battery is a second supporting member. The box body of the first battery is provided with an avoiding structure for avoiding the supporting part of the second supporting member towards the side of the second battery.

[0010] The energy storage device of the embodiment of the present application, a plurality of supporting members are mounted on the support member along the first direction, and a plurality of batteries in the battery pack are sequentially mounted on the supporting portions of the supporting members along the first direction, so that the plurality of batteries form a multi-layer battery stack structure; each battery comprises a box body and a battery cell arranged in the box body; and adjacent two batteries are divided into a first battery and a second battery, the supporting member for supporting the first battery is a first supporting member, and the supporting member for supporting the second battery is a second supporting member; the side portion of the box body of the first battery facing the second battery is provided with an avoiding structure for avoiding the supporting portion of the second supporting member, the avoiding structure of the first battery can avoid the supporting portion of the second supporting member, so that the area of the box body of the first battery close to the side portion of the second battery except the avoiding structure can move towards the second battery, thereby increasing the size of the first battery in the first direction, improving the internal space of the box body of the first battery, the internal space of the box body of the first battery is large, and battery cells with larger size and larger capacity can be used, which is beneficial to improve the capacity of the battery and the energy storage device; in addition, the gap between the batteries can be reduced, and the space utilization in the energy storage device can be improved.

[0011] In some embodiments, the box body of the first battery comprises a first side wall and a second side wall, the first side wall is arranged to face the support member, and the second side wall is arranged to face the second battery, and the avoiding structure is connected between the first side wall and the second side wall, and the avoiding structure is formed with an avoiding space for avoiding the supporting portion of the second supporting member at the side portion of the battery cell.

[0012] By adopting the technical scheme of the embodiment, the avoiding structure is located at the edge of the side portion of the box body of the first battery facing the second battery, so that most of the area of the box body of the first battery facing the second battery can move towards the second battery, i.e. the second side wall can move towards the second battery, so that the internal space of the box body of the first battery can be more increased, so that battery cells with larger size and larger capacity can be accommodated in the first battery, which is beneficial to improve the capacity of the battery and the energy storage device; in addition, the gap between the batteries can be reduced, and the space utilization in the energy storage device can be improved.

[0013] In some embodiments, at least part of the supporting portion of the second supporting member is located in the avoiding space.

[0014] By adopting the technical scheme of the embodiment, the second supporting member is located in the avoiding space, the distance between the second supporting member and the second side wall is closer, the second side wall can be closer to the second battery, battery cells with larger size and larger capacity can be accommodated in the first battery, which is beneficial to improve the capacity of the battery and the energy storage device; in addition, the gap between the batteries can be better reduced, and the space utilization in the energy storage device can be improved.

[0015] In some embodiments, the distance between the side of the supporting part of the second supporting member facing away from the supporting member and the supporting member is L1, and the distance between the second side wall and the supporting member is L2, wherein L1≤L2.

[0016] By adopting the technical scheme of this embodiment, the second supporting member does not interfere with the second side wall in the direction in which the supporting member faces the first battery, and the avoiding effect of the avoiding structure on the second supporting member is good.

[0017] In some embodiments, the distance between the second side wall and the second battery is L3, and the size of the supporting part of the second supporting member in the first direction is L4, wherein L3

[0018] By adopting the technical scheme of this embodiment, the supporting part of the second supporting member is located in the avoiding space, so that the second side wall is closer to the second battery, the size of the box of the first battery in the first direction is increased, the internal space of the box of the battery is large, more large-size and large-capacity battery monomers can be accommodated in the first battery, which is conducive to improving the electric capacity of the battery and the energy storage device; in addition, the gap between the batteries is also reduced, and the space utilization rate in the energy storage device is improved.

[0019] In some embodiments, the avoiding structure comprises an inclined section, the inclined section being connected between the first side wall and the second side wall, and the inclined section extending obliquely from an end thereof used for connecting with the first side wall towards the second side wall and towards the inside of the box.

[0020] By adopting the technical scheme of this embodiment, the avoiding structure adopts the structure of the inclined section, the structure is simple, the avoiding structure is simple to form, and the manufacturing cost of the box is reduced.

[0021] In some embodiments, the avoiding structure further comprises a first arc-shaped section connected between the first side wall and the inclined section, and / or the avoiding structure further comprises a second arc-shaped section connected between the second side wall and the inclined section.

[0022] By adopting the technical scheme of this embodiment, stress concentration is reduced, the structural reliability of the box is improved, the use reliability of the battery is improved, and the processing and forming are also facilitated.

[0023] In some embodiments, the avoiding structure is recessed towards the inside of the box to form an avoiding gap, and the avoiding gap forms the avoiding space.

[0024] By adopting the technical scheme of this embodiment, the avoiding structure is recessed towards the inside of the box to obtain the avoiding space, and the avoiding structure is convenient to process and manufacture.

[0025] In some embodiments, the avoiding structure comprises a bent section connected between the first side wall and the second side wall, and the bent section surrounds to form the avoiding gap.

[0026] By adopting the technical scheme of the embodiment, the avoiding structure adopts a bending structure, and the processing and molding of the box body are simple.

[0027] In some embodiments, the bending section comprises a first straight line sub-section and a second straight line sub-section intersecting with each other, the first straight line sub-section being connected between the first side wall and the second straight line sub-section, and the second straight line sub-section being connected between the first straight line sub-section and the second side wall.

[0028] By adopting the technical scheme of the embodiment, the bending section adopts the structure of the first straight line sub-section and the second straight line sub-section, which is simple in structure, and the processing and molding of the box body are simpler.

[0029] In some embodiments, the first straight line sub-section is perpendicular to the second straight line sub-section.

[0030] By adopting the technical scheme of the embodiment, the shape of the bending section is regular, and the processing and molding of the box body are simpler.

[0031] In some embodiments, the bending section further comprises an arc-shaped sub-section connected between the first straight line sub-section and the second straight line sub-section.

[0032] By adopting the technical scheme of the embodiment, the arc-shaped sub-section can smoothly connect the first straight line sub-section and the second straight line sub-section, which is conducive to reducing stress concentration, improving the structural reliability of the box body, improving the use reliability of the battery, and facilitating the processing and molding.

[0033] In some embodiments, the first straight line sub-section is perpendicular to the first side wall, and / or the second straight line sub-section is perpendicular to the second side wall.

[0034] By adopting the technical scheme of the embodiment, the structure of the box body at the avoiding structure is regular, and the processing and molding of the box body are simpler.

[0035] In some embodiments, the battery monomer in the first battery has a first end face arranged towards the second battery, the first end face is provided with an electrode terminal, and the avoiding structure is arranged in the orthographic projection of the first end face in a manner offset from the part of the electrode terminal protruding from the first end face.

[0036] By adopting the technical scheme of the embodiment, in the first battery, the electrode terminal and the avoiding structure are offset, the electrode terminal is arranged opposite to the area of the side of the box body towards the second battery other than the avoiding structure, and then the area of the side of the box body towards the second battery other than the avoiding structure moves towards the second battery, the electrode terminal and the first end face can also move towards the second battery, so that a battery monomer with a larger size and a larger capacity in the first direction can be selected and placed in the box body, which is conducive to improving the capacity of the battery and the energy storage device.

[0037] In some embodiments, each supporting member further comprises a connecting portion, and the supporting portion is connected to the connecting portion at a side thereof in the first direction.

[0038] By adopting the technical scheme of this embodiment, the connecting portion can increase the connecting area between the supporting member and the support member, and the reliability of the battery support can be improved.

[0039] In some embodiments, the connecting portion and the battery supported by the supporting portion are located on the same side of the supporting portion.

[0040] By adopting the technical scheme of this embodiment, the connecting portion of the supporting member is located between the battery supported by the connecting portion of the supporting member and the support member, which can reduce the risk of interference of the connecting portion of the supporting member with other batteries, and is conducive to reducing the spacing between the batteries and improving the compactness of the energy storage device.

[0041] In some embodiments, the number of support members is a plurality, the plurality of support members are arranged at intervals in the second direction, a battery pack is arranged between any two adjacent support members, and a supporting member is arranged on the side opposite to each other of any two adjacent support members; the box body of the first battery is connected with a avoiding structure at two opposite sides in the second direction, and the second direction is perpendicular to the first direction.

[0042] By adopting the technical scheme of this embodiment, the supporting member between any two adjacent support members can support the batteries in the battery pack at two opposite sides in the second direction, and the stability of the battery support is improved.

[0043] In some embodiments, the support member comprises a first support portion and a second support portion, the first support portion and the second support portion are arranged in the third direction, the supporting member is connected to the first support portion and the second support portion at two opposite ends thereof in the third direction, and the third direction is perpendicular to the first direction and the second direction.

[0044] By adopting the technical scheme of this embodiment, the supporting member can have a longer dimension in the third direction, and the battery can be supported by a large area in the third direction, and the stability of the battery support is good; in addition, the two ends of the supporting member are connected to the support member, the connecting position between the support member and the supporting member is more, and the connection reliability is good, which is conducive to improving the use reliability of the energy storage device.

[0045] In a second aspect, a battery is provided, comprising a battery monomer and a box body, and the battery monomer is located in the box body; the box body comprises a first side wall, a second side wall and a third side wall, the second side wall and the third side wall are arranged at intervals in the first direction, the battery monomer is located between the second side wall and the third side wall, the first side wall is located between the second side wall and the third side wall, the avoiding structure is connected between the first side wall and the second side wall, and the avoiding space is formed on the side of the avoiding structure away from the box body.

[0046] The battery of the embodiment of the application, in the process of being installed in the energy storage device, after a plurality of batteries are installed on the bearing part of the bearing member of the energy storage device along the first direction, the second side wall faces the adjacent battery, the third side wall is supported on the bearing part of the bearing member, the first side wall is located on the same side of the battery as the bearing member, and the avoiding space formed by the avoiding structure connected between the first side wall and the second side wall can be used to accommodate the bearing part of the bearing member supporting the adjacent battery, so that the second side wall of the battery can move towards the adjacent battery, thereby increasing the internal space of the box body of the battery, so that a battery cell of a larger size and larger capacity can be accommodated in the battery, and the electric capacity of the battery and the energy storage device is beneficially improved; in addition, the gap between the batteries can also be reduced, and the space utilization and the volume energy density in the energy storage device are improved.

[0047] In some embodiments, the avoiding structure comprises an inclined segment, the inclined segment being connected between the first side wall and the second side wall, and the inclined segment extending obliquely from an end of the inclined segment for connecting with the first side wall towards the second side wall and towards the inside of the box body.

[0048] By adopting the technical scheme of the embodiment, the avoiding structure adopts the structure of the inclined segment, the structure is simple, the avoiding structure is simple to form, and the manufacturing cost of the box body is beneficially reduced.

[0049] In some embodiments, the avoiding structure further comprises a first arc segment connected between the first side wall and the inclined segment, and / or the avoiding structure further comprises a second arc segment connected between the second side wall and the inclined segment.

[0050] By adopting the technical scheme of the embodiment, stress concentration is beneficially reduced, the structural reliability of the box body is improved, the use reliability of the battery is improved, and the processing and forming are also facilitated.

[0051] In some embodiments, the avoiding structure is recessed towards the inside of the box body to form an avoiding gap, and the avoiding gap forms the avoiding space.

[0052] By adopting the technical scheme of the embodiment, the avoiding structure is recessed towards the inside of the box body to obtain the avoiding space, and the processing and manufacturing of the avoiding structure are facilitated.

[0053] In some embodiments, the avoiding structure comprises a bending segment connected between the first side wall and the second side wall, and the bending segment surrounds to form the avoiding gap.

[0054] By adopting the technical scheme of the embodiment, the avoiding structure adopts the bending structure, and the processing and forming of the box body are simple.

[0055] In some embodiments, the bending segment comprises a first straight line subsegment and a second straight line subsegment intersecting with each other, the first straight line subsegment is connected between the first side wall and the second straight line subsegment, and the second straight line subsegment is connected between the first straight line subsegment and the second side wall.

[0056] By adopting the technical scheme of this embodiment, the bending section adopts the structure of the first straight sub-section and the second straight sub-section, which is simple in structure and simple in processing and forming of the box.

[0057] In some embodiments, the first straight sub-section is perpendicular to the second straight sub-section.

[0058] By adopting the technical scheme of this embodiment, the shape of the bending section is regular, and the processing and forming of the box are simple.

[0059] In some embodiments, the bending section further comprises an arc-shaped sub-section, which is connected between the first straight sub-section and the second straight sub-section.

[0060] By adopting the technical scheme of this embodiment, the arc-shaped sub-section can smoothly connect the first straight sub-section and the second straight sub-section, which is conducive to reducing stress concentration, improving the structural reliability of the box, improving the use reliability of the battery, and facilitating the processing and forming.

[0061] In some embodiments, the first straight sub-section is perpendicular to the first side wall, and / or the second straight sub-section is perpendicular to the second side wall.

[0062] By adopting the technical scheme of this embodiment, the structure of the box at the avoiding structure is regular, and the processing and forming of the box are simple.

[0063] In some embodiments, the battery monomer has a first end face facing the second side wall, the first end face is provided with an electrode terminal, and the orthographic projection of the avoiding structure on the first end face is arranged to be offset from the part of the electrode terminal protruding from the first end face in the orthographic projection of the first end face.

[0064] By adopting the technical scheme of this embodiment, the electrode terminal is offset from the avoiding structure, and the electrode terminal is arranged opposite to the second side wall. Therefore, after the second side wall moves towards the second battery, the electrode terminal and the first end face can also move towards the second battery, so that a battery monomer with a larger size and a larger capacity in the first direction can be selected and placed in the box, which is conducive to improving the capacity of the battery and the energy storage device.

[0065] In some embodiments, the second side wall is connected with the avoiding structure relative to both sides along a second direction, and the second direction is perpendicular to the first direction.

[0066] By adopting the technical scheme of this embodiment, the second side wall is connected with the avoiding structure relative to both sides along the second direction, and the two avoiding structures can avoid the supporting portions of the two supporting members for supporting the adjacent batteries, so that the second side wall can be closer to the adjacent batteries to improve the internal space of the box, so that a battery monomer with a larger size and a larger capacity in the first direction can be selected and placed in the box, which is conducive to improving the capacity of the battery and the energy storage device.

[0067] The above description is only a summary of the technical solutions of the present application. In order to make the technical means of the present application more clearly understood and implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0068] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor under the premise of these drawings.

[0069] Fig. 1 is a structural schematic diagram of an energy storage device from some embodiments of the present application in one perspective view.

[0070] Fig. 2 is a structural schematic diagram of the energy storage device shown in Fig. 1 in another perspective view.

[0071] Fig. 3 is a sectional view of the energy storage device provided by another embodiment of the present application along the line A-A in Fig. 2.

[0072] Fig. 4 is a partial enlarged view of B in Fig. 3.

[0073] Fig. 5 is a sectional view of the energy storage device provided by yet another embodiment of the present application along the line A-A in Fig. 2.

[0074] Fig. 6 is a partial enlarged view of C in Fig. 5.

[0075] Fig. 7 is a structural schematic diagram of the battery shown in Fig. 1.

[0076] Fig. 8 is a structural schematic diagram of an energy storage container provided by some embodiments of the present application.

[0077] Fig. 9 is a structural schematic diagram of an energy storage cabinet provided by some embodiments of the present application.

[0078] In the drawings: 1000, energy storage device; 1010, energy storage container; 1011, container; 1020, energy storage cabinet; 1021, cabinet body; 1100, battery pack; 100, battery; 101, first battery; 102, second battery; 10, battery monomer; 11, electrode terminal; 12, first end face; 20, box body; 201, avoidance space; 202, avoidance gap; 21, first part; 211, first side wall; 212, second side wall; 213, avoidance structure; 2131, inclined section; 2132, first arc section; 2133, second arc section; 2134, bending section; 21341, first straight sub-section; 21342, second straight sub-section; 21343, arc sub-section; 22, second part; 221, third side wall; 1200, support piece; 1210, first support part; 1220, second support part; 1300, support piece; 1301, first support piece; 1302, second support piece; 1310, support part; 1320, connecting part. DETAILED DESCRIPTION

[0079] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, and are not intended to limit the present application.

[0080] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the present specification and claims and the aforementioned description of the drawings herein, the terms "comprising" and "having" and any variations thereof, are intended to cover not exclusively inclusive.

[0081] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0082] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least some embodiments of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined in any suitable manner with other embodiments.

[0083] In the description of the embodiments of the present application, the term "and / or" is only to describe an association relationship of associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0084] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces). The meaning of "several" is one or more, unless otherwise explicitly specified.

[0085] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0086] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0087] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0088] New energy as the main body of new power system is becoming an important choice for sustainable development of energy. With the rapid development of new energy technology, energy storage devices are being used more and more widely.

[0089] In the related art, an energy storage device is provided, which generally comprises a support, a plurality of supporting members and a plurality of batteries. The plurality of supporting members are installed on one side of the support and are arranged at intervals along the height direction of the energy storage device. The plurality of batteries are installed on the supporting portions of the supporting members in sequence along the height direction of the energy storage device, and the batteries are supported by the supporting portions to form a multi-layer battery stacking structure. The box of the battery is in a right-angle structure near the edge of the supporting portion for supporting the adjacent battery. Therefore, in order to avoid the interference between the supporting portion and the battery, a certain gap needs to be reserved between the two adjacent batteries to accommodate the supporting portion. However, in the case that the height of the energy storage device is fixed, the setting of the gap will limit the height of the battery, which is not conducive to increasing the internal space of the box of the battery.

[0090] Therefore, in order to improve the internal space of the battery in the energy storage device, the energy storage device provided in the embodiments of the present application comprises a battery pack, wherein two adjacent batteries are divided into a first battery and a second battery. The box of the first battery is provided with a avoiding structure, which can avoid the supporting portion between the adjacent first battery and the second battery. In this way, the other areas of the box of the first battery except the avoiding structure near the side of the second battery move towards the second battery, thereby increasing the size of the first battery in the first direction, improving the internal space of the box of the first battery, and enabling the use of larger size and larger capacity battery monomers. This is conducive to improving the capacity of the battery and the energy storage device. In addition, the gap between the batteries can also be reduced, and the space utilization and volume energy density in the energy storage device can be improved.

[0091] The battery mentioned in the embodiments of the present application refers to a single physical module comprising one or more battery monomers to provide higher voltage and capacity. The battery generally comprises a box for packaging one or more battery monomers. The box can prevent liquids or other foreign matters from affecting the charging or discharging of the battery monomers to a certain extent.

[0092] In the battery, when there are a plurality of battery monomers, the plurality of battery monomers can be connected in series, in parallel or in a mixed manner. The mixed manner refers to that there are both series connection and parallel connection among the plurality of battery monomers. The plurality of battery monomers can be directly connected in series, in parallel or in a mixed manner, and then the whole formed by the plurality of battery monomers is accommodated in the box. Of course, the battery can also be in the form of a battery module in which a plurality of battery monomers are connected in series, in parallel or in a mixed manner, and a plurality of battery modules are connected in series, in parallel or in a mixed manner to form a whole, which is accommodated in the box. The battery can also comprise other structures, for example, the battery can also comprise a busbar component for realizing the electrical connection between the plurality of battery monomers.

[0093] The battery monomer in the embodiments of the present application comprises an electrode assembly and a shell, and the electrode assembly is installed in the shell to protect the electrode assembly by the shell.

[0094] The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The electrode assembly mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer is coated on the surface of the positive electrode current collector, the part of the positive electrode current collector which is not coated with the positive electrode active material layer protrudes from the part which is coated with the positive electrode active material layer, the part which is not coated with the positive electrode active material layer serves as a positive electrode tab, or a metal conductor is welded on the positive electrode current collector and led out as a positive electrode tab. Taking a lithium ion battery as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer is coated on the surface of the negative electrode current collector, the part of the negative electrode current collector which is not coated with the negative electrode active material layer protrudes from the part which is coated with the negative electrode active material layer, the part which is not coated with the negative electrode active material layer serves as a negative electrode tab, or a metal conductor is welded on the negative electrode current collector and led out as a negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc. In order to ensure that the fuse does not occur to a certain extent when passing a large current, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. Understandably, in the electrode assembly, the number of positive electrode tabs can be one, and the number of negative electrode tabs can also be one. That is to say, two groups of tabs are provided on the electrode assembly, each group includes at least one tab, and one group of tabs is a positive electrode tab and the other group of tabs is a negative electrode tab.

[0095] The electrode assembly can be a winding type structure or a stacking type structure. The embodiments of the present application are not limited thereto. The winding type structure is mostly to weld the tabs to the current collector, and then arrange them in the order of positive electrode sheet-separator-negative electrode sheet-separator; and then wind them to form a cylindrical or square-shaped battery cell. The stacking type structure is mostly to lead out the tabs from the current collector, arrange the positive electrode sheet, the negative electrode sheet and the separator in the order of positive electrode sheet-separator-negative electrode sheet-separator, and stack them together to form a stacked battery cell; wherein the separator can be cut and directly stacked with the separator sheet, or the separator is not cut but folded in a Z shape for stacking. The material of the separator can be PP (Polypropylene) or PE (Polyethylene), etc. The separator is an insulating film arranged between the positive electrode sheet and the negative electrode sheet, and its main function is to isolate the positive and negative electrodes and prevent the electrons in the battery from freely passing through, to a certain extent, to prevent short circuit, while allowing the ions in the electrolyte to freely pass between the positive and negative electrodes to form a loop. The positive electrode sheet and the negative electrode sheet are collectively referred to as electrode sheets. The positive electrode tab and the negative electrode tab are collectively referred to as tabs.

[0096] The shell refers to a shell structure with a space inside to accommodate and protect the electrode assembly. The shell can be made of a material with certain hardness and strength, so that the shell is not easy to deform when subjected to extrusion and impact, so that the battery monomer can have higher structural strength, and the reliability can also be improved. The material of the shell can be various, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0097] The battery and energy storage device of the embodiments of the present application are introduced below.

[0098] The energy storage device related to the embodiments of the present application includes one or more battery packs, and the battery packs are connected in series, parallel or mixed. The energy storage device can be used as an energy storage cabinet, an energy storage station, an energy storage container, etc. in a new energy power system such as wind energy, solar energy and water energy.

[0099] For convenience of description, refer to FIGS. 1-9, which representatively show the schematic diagrams of the energy storage device 1000 and the battery 100 provided by the embodiments of the present application.

[0100] Referring to FIG. 1, the energy storage device 1000 has a height direction, a length direction and a width direction. The height direction of the energy storage device 1000 can be referred to as the Z direction in the figure, the width direction of the energy storage device 1000 can be referred to as the Y direction in the figure, and the length direction of the energy storage device 1000 can be referred to as the X direction in the figure. The first direction can be referred to as the height direction of the energy storage device 1000, the second direction can be referred to as the width direction of the energy storage device 1000, and the third direction can be referred to as the length direction of the energy storage device 1000. It should be understood that the first direction can also be referred to as the width direction or the length direction of the energy storage device 1000.

[0101] Referring to FIGS. 1-6, in some embodiments of the present application, an energy storage device 1000 is provided, which includes a support 1200, a battery pack 1100 and a plurality of supporting members 1300. The supporting members 1300 are installed on the side of the support 1200 along the first direction and are spaced apart from each other. Each supporting member 1300 includes a supporting portion 1310. The battery pack 1100 includes a plurality of batteries 100, which are installed on each supporting member 1300 along the first direction in sequence. The supporting portion 1310 is located between adjacent two batteries 100. Each battery 100 includes a box body 20 and a battery monomer 10 arranged in the box body 20. Adjacent two batteries 100 are a first battery 101 and a second battery 102. The supporting member 1300 for supporting the first battery 101 is a first supporting member 1301, and the supporting member 1300 for supporting the second battery 102 is a second supporting member 1302. The box body 20 of the first battery 101 is provided with an avoiding structure 213 for avoiding the supporting portion 1310 of the second supporting member 1302 on the side thereof facing the second battery 102.

[0102] The support 1200 can refer to a component for supporting the support member 1300, and the support 1200 can be parallel to the first direction or close to parallel to the first direction. The support 1200 can be, but is not limited to, a plate or a rod.

[0103] The support member 1300 can refer to a component fixed to the support 1200 and used for supporting the battery 100. The support part 1310 can refer to a part of the support member 1300 for connecting with the battery 100. A plurality of support members 1300 are arranged at intervals along the first direction. The number of support members 1300 can be two, three, four, or more than five. A plurality of batteries 100 are sequentially arranged on the support members 1300 along the first direction. The plurality of batteries 100 are arranged one-to-one with the plurality of support members 1300. The battery 100 abuts against the support part 1310. The support part 1310 is located between adjacent two batteries 100, so that the battery 100 can be located between the support parts 1310 of adjacent two support members 1300.

[0104] For example, referring to FIG. 8, in the case of the energy storage device 1000 being an energy storage container 1010, the energy storage container 1010 includes a container 1011. The battery pack 1100 and the support member 1300 are located in the container 1011. The support 1200 can refer to a vertical rod or a vertical plate arranged in the energy storage container 1010 or a side wall of the container 1011. The vertical plate or the vertical rod divides the internal space of the container 1011 into a plurality of spaces. Each space can accommodate one or more battery packs 1100. The lowermost support member 1300 can refer to the bottom wall of the container 1011. The lowermost support member 1300 can also have the same structure as other support members 1300.

[0105] For example, referring to FIG. 9, in the case of the energy storage device 1000 being an energy storage cabinet 1020, the energy storage cabinet 1020 is a cabinet body 1021. The support 1200 can refer to a side wall of the cabinet body 1021. The battery pack 1100 and the support member 1300 are located in the container 1011. The lowermost support member 1300 can refer to the bottom wall of the cabinet body 1021. The lowermost support member 1300 can also have the same structure as other support members 1300. The lowermost support member 1300 can also be arranged at intervals with the bottom wall of the cabinet body 1021 to elevate the lowermost battery 100 and reduce the risk of water entering the lowermost battery 100.

[0106] The battery pack 1100 can refer to an assembly including a plurality of batteries 100 arranged along the first direction. Each battery pack 1100 can include a plurality of batteries 100. The plurality of batteries 100 in the battery pack 1100 can be connected in series, in parallel, or in a hybrid manner.

[0107] The battery 100 includes a housing 20 and a battery cell 10, with the battery cell 10 housed within the housing 20. The housing 20 provides a space for the battery cell 10 and can have various structures. The housing 20 can have various shapes, such as a cylinder or a rectangular parallelepiped.

[0108] For example, the housing 20 may include a first portion 21 and a second portion 22, which overlap each other and together define a storage space for accommodating the battery cell 10. The second portion 22 may be a hollow structure with one end open, and the first portion 21 may be a plate-like structure, with the first portion 21 overlapping the open side of the second portion 22, so that the first portion 21 and the second portion 22 together define the storage space. The first portion 21 and the second portion 22 may also be hollow structures each with one end open, with the open side of the first portion 21 overlapping the open side of the second portion 22.

[0109] Among the two adjacent batteries 100 of the battery pack 1100, one battery 100 is a first battery 101, and the other battery 100 is a second battery 102. The second battery 102 is located above the first battery 101. The supporting member 1300 used to support the first battery 101 is the first supporting member 1301, and the supporting member 1300 used to support the second battery 102 is the second supporting member 1302. Among the supporting members 1300 used to support the two adjacent batteries 100, the supporting member 1300 located at the bottom is the first supporting member 1301, and the supporting member 1300 located at the top is the second supporting member 1302.

[0110] The housing 20 of the first battery 101 is connected to a side portion thereof near the second battery 102. A relief space 201 is formed between the relief structure 213 and the second battery 102. The relief space 201 is used to accommodate the supporting portion 1310 of the second supporting member 1302, thereby avoiding the supporting portion 1310 of the second supporting member 1302. The housing 20 of the first battery 101 is recessed away from the second battery 102, thereby forming the relief space 201 for avoiding the supporting portion 1310. Alternatively, the relief structure 213 may also refer to a chamfered corner of the first battery 101 near the second supporting member 1302 to form the relief space 201 for avoiding the supporting portion 1310. Of course, the relief structure 213 may also be other structures that can avoid the second supporting member 1302.

[0111] In the case that the number of the batteries 100 is equal to two, the battery 100 located at the lower side is the first battery 101, and the battery 100 located at the upper side is the second battery 102. At this time, the box 20 of the first battery 101 is provided with the avoiding structure 213, and the box 20 of the second battery 102 can be provided with the avoiding structure 213. In this way, the same structure of the battery 100 can be used for the energy storage device 1000, and the assembly is convenient and simple. Of course, the second battery 102 can also not be provided with the avoiding structure 213, which can be set according to actual needs.

[0112] In the case that the number of the batteries 100 is greater than or equal to three, among the adjacent three batteries 100, the battery 100 located at the lower side is the first battery 101, and the battery 100 located at the middle is the second battery 102. Among the battery 100 located at the middle and the battery 100 located at the upper side, the battery 100 located at the middle is the first battery 101, and the battery 100 located at the upper side is the second battery 102. In succession, the battery 100 located at the uppermost side can be provided with the avoiding structure 213, or can not be provided with the avoiding structure 213, and the other batteries 100 need to be provided with the avoiding structure 213, so as to maximize the gap between the batteries 100 and improve the space utilization of the energy storage device 1000.

[0113] Of course, in other examples, a part of the batteries 100 can be connected with the avoiding structure 213, and the other part of the batteries 100 can not be provided with the avoiding structure 213, which can be set according to actual needs. At least one of the batteries 100 located below the battery 100 located at the uppermost side can be connected with the avoiding structure 213, that is, at least one of the batteries 100 located below the battery 100 located at the uppermost side is the first battery 101.

[0114] The energy storage device 1000 of the embodiment of the present application, a plurality of supporting members 1300 are mounted on the supporting member 1200 along the first direction, and a plurality of batteries 100 in the battery pack 1100 are sequentially mounted on the supporting portions 1310 of the supporting members 1300 along the first direction, so that the plurality of batteries 100 form a multi-layer battery stack structure; each battery 100 comprises a box body 20 and a battery cell 10 arranged in the box body 20; and the adjacent two batteries 100 are divided into a first battery 101 and a second battery 102, the supporting member 1300 for supporting the first battery 101 is a first supporting member 1301, and the supporting member 1300 for supporting the second battery 102 is a second supporting member 1302; the side of the box body 20 of the first battery 101 is provided with an avoiding structure 213 for avoiding the supporting portion 1310 of the second supporting member 1302, the avoiding structure 213 of the first battery 101 can avoid the supporting portion 1310 of the second supporting member 1302, so that the area of the box body 20 of the first battery 101 close to the side of the second battery 102 except the avoiding structure 213 can move towards the second battery 102, thereby increasing the size of the first battery 101 in the first direction, improving the internal space of the box body 20 of the first battery 101, the internal space of the box body 20 of the first battery 101 is large, and the battery cell 10 with large size and large capacity can be used, which is beneficial to improve the capacity of the battery 100 and the energy storage device 1000; in addition, the gap between the batteries 100 can be reduced, and the space utilization and volume energy density in the energy storage device 1000 can be improved.

[0115] In some embodiments, referring to FIG. 1 and FIG. 7, the battery 100 has a height direction, a length direction and a width direction, the height direction of the battery 100 can be parallel to the height direction of the energy storage device 1000, the width direction of the battery 100 can be parallel to the width direction of the energy storage device 1000, and the length direction of the battery 100 can be parallel to the length direction of the energy storage device 1000. In this way, the battery 100 is arranged regularly, which is beneficial to the assembly of components. Among them, the box body 20 can define the shape of the battery 100, the height direction of the battery 100 can be the height direction of the box body 20, the width direction of the battery 100 can be the width direction of the box body 20, and the length direction of the battery 100 can be the length direction of the box body 20.

[0116] In some embodiments, the first direction is parallel to the height direction of the energy storage device 1000, the top wall of the box body 20 of the battery 100 can be raised, the internal space of the box body 20 of the first battery 101 can be improved, and the battery cell 10 with higher and larger capacity can be accommodated in the first battery 101, which is beneficial to improve the capacity of the battery 100 and the energy storage device 1000.

[0117] In some embodiments, the first direction is parallel to the width direction or the length direction of the energy storage device 1000, which can correspond to increasing the width or the length of the box 20 of the battery 100, improving the internal space of the box 20 of the first battery 101, and accommodating larger and higher-capacity battery cells 10 in the first battery 101, thereby facilitating the improvement of the capacity of the battery 100 and the energy storage device 1000.

[0118] In some embodiments of the present application, referring to FIGS. 1-6, the box 20 of the first battery 101 includes a first side wall 211 and a second side wall 212, the first side wall 211 faces the support 1200, the second side wall 212 faces the second battery 102, and the avoidance structure 213 is connected between the first side wall 211 and the second side wall 212, and the avoidance space 201 for avoiding the support portion 1310 of the second support 1302 is formed on the side of the avoidance structure 213 away from the battery cell 10.

[0119] The first side wall 211 can refer to the side wall of the box 20 of the first battery 101 opposite to the support 1200, and the second side wall 212 can refer to the side wall of the box 20 of the first battery 101 opposite to the second battery 102; the avoidance structure 213 is connected between the first side wall 211 and the second side wall 212, so that the avoidance structure 213 is located at the edge of the side of the box 20 of the first battery 101 close to the second battery 102.

[0120] For example, in the first battery 101, the first portion 21 is a plate structure, the second portion 22 is a hollow structure with an opening at one end, the first portion 21 is arranged close to the second battery 102, the second side wall 212 can be the middle region of the first portion 21, the edge of the first portion 21 close to the support 1200 forms the avoidance structure 213, and the first side wall 211 can be the side wall of the second portion 22 close to the support 1200; or, the second side wall 212 is the first portion 21, the side wall of the second portion 22 close to the support 1200 forms the avoidance structure 213 at the end close to the opening, and the other regions of the side wall except the avoidance structure 213 can form the first side wall 211.

[0121] For example, referring to FIGS. 5 and 7, in the first battery 101, the first portion 21 is a hollow structure with an opening, and the second portion 22 is a plate structure or a hollow structure with an opening at one end, the first portion 21 is arranged close to the second battery 102, the second side wall 212 can be the top wall opposite to the second portion 22 of the first portion 21, the side wall of the first portion 21 close to the support 1200 forms the first side wall 211, and the edge of the top of the first portion 21 forms the avoidance structure 213.

[0122] The avoiding space 201 can refer to a space formed by extending the surface (see the dashed line N in FIGS. 4 and 6) of the first side wall 211 away from the inside of the box 20, the surface (see the dashed line M in FIGS. 4 and 6) of the second side wall 212 away from the inside of the box 20, and the avoiding structure 213. That is, the avoiding space 201 is formed by the surfaces of the dashed line M, the dashed line N, and the avoiding structure 213 away from the inside of the box 20. The avoiding space 201 can be used to accommodate the supporting part 1310 of the supporting member 1300 to reduce the risk of interference.

[0123] For example, referring to FIGS. 3-6, the top wall of the box 20 forms the second side wall 212, the side wall of the box 20 close to the supporting member 1200 forms the first side wall 211, and the avoiding structure 213 is located at the edge of the top of the box 20 of the first battery 101. The first side wall 211 and the avoiding structure 213 are divided by the dashed line E, and the second side wall 212 and the avoiding structure 213 are divided by the dashed line F.

[0124] By adopting the technical solution of this embodiment, the avoiding structure 213 is located at the edge of the side of the box 20 of the first battery 101 facing the second battery 102, so that most of the area of the box 20 of the first battery 101 facing the second battery 102 can move towards the second battery 102, that is, the second side wall 212 can move towards the second battery 102, so that the internal space of the box 20 of the first battery 101 can be increased more, so that a battery cell 10 with a larger size and a larger capacity can be accommodated in the first battery 101, which is beneficial to improve the electric capacity of the battery 100 and the energy storage device 1000. In addition, the gap between the batteries 100 can be reduced, and the space utilization and the volume energy density in the energy storage device 1000 can be improved.

[0125] In some other embodiments of the present application, referring to FIGS. 3-6, at least part of the supporting part 1310 of the second supporting member 1302 is located in the avoiding space 201.

[0126] Part of the supporting part 1310 of the second supporting member 1302 is located in the avoiding space 201, and another part of the supporting part 1310 of the second supporting member 1302 is located outside the avoiding space 201; or the entire supporting part 1310 of the second supporting member 1302 is located in the avoiding space 201.

[0127] By adopting the technical scheme of the embodiment, the bearing part 1310 of the second bearing part 1302 is located in the avoiding space 201, the distance between the second bearing part 1302 and the second side wall 212 is closer, the second side wall 212 can be closer to the second battery 102, the first battery 101 can accommodate a battery monomer 10 of a larger size and a larger capacity, and the capacity of the battery 100 and the energy storage device 1000 is improved; in addition, the gap between the batteries 100 can be better reduced, and the space utilization rate in the energy storage device 1000 is improved.

[0128] In some other embodiments of the present application, referring to FIGS. 3-6, the distance between the side of the bearing part 1310 of the second bearing part 1302 away from the support 1200 and the support 1200 is L1, and the distance between the second side wall 212 and the support 1200 is L2, wherein L1≤L2.

[0129] The distance L1 between the side of the bearing part 1310 of the second bearing part 1302 away from the support 1200 and the support 1200 can refer to the distance between the side of the bearing part 1310 of the second bearing part 1302 away from the support 1200 and the side of the support 1200 facing the battery 100.

[0130] The distance L2 between the second side wall 212 and the support 1200 can refer to the distance between the side of the second side wall 212 facing the support 1200 and the side of the support 1200 facing the battery 100. For example, referring to FIG. 4, the dashed line F can represent the side of the second side wall 212 facing the support 1200, that is, L2 is equal to the distance between the dashed line F and the side of the support 1200 facing the battery 100.

[0131] L1≤L2, it can be understood that in the direction of the support 1200 facing the first battery 101, there is a gap between the second side wall 212 and the bearing part 1300. The direction of the support 1200 facing the first battery 101 can refer to the second direction.

[0132] By adopting the technical scheme of the embodiment, in the direction of the support 1200 facing the first battery 101, the second bearing part 1302 will not interfere with the second side wall 212, and the avoiding effect of the avoiding structure 213 on the second bearing part 1302 is good.

[0133] In some other embodiments of the present application, referring to FIGS. 3-6, the distance between the second side wall 212 and the second battery 102 is L3, and the size of the bearing part 1310 of the second bearing part 1302 in the first direction is L4, wherein L3<L4.

[0134] The spacing L3 between the second side wall 212 and the second battery 102 can be the spacing between the surface of the second side wall 212 facing the second battery 102 and the second battery 102.

[0135] The dimension L4 of the supporting part 1310 of the second supporting member 1302 in the first direction can refer to the spacing between the opposite surfaces of the supporting part 1310 of the second supporting member 1302 in the first direction.

[0136] L3 < L4, and it can be understood that the second side wall 212 can extend into the avoiding space 201.

[0137] By adopting the technical scheme of the embodiment, the supporting part 1310 of the second supporting member 1302 is located in the avoiding space 201, so that the second side wall 212 is closer to the second battery 102, the dimension of the box 20 of the battery 100 in the first direction is increased, the internal space of the box 20 of the battery 100 is large, more large-size and large-capacity battery monomers 10 can be accommodated in the first battery 101, which is beneficial to improve the electric capacity of the battery 100 and the energy storage device 1000; in addition, the gap between the batteries 100 is also reduced, and the space utilization rate in the energy storage device 1000 is improved.

[0138] In some other embodiments of the present application, referring to FIGS. 3 and 4, the avoiding structure 213 includes an inclined segment 2131 connected between the first side wall 211 and the second side wall 212, and the inclined segment 2131 extends obliquely from the end of the inclined segment 2131 for connecting with the first side wall 211 towards the second side wall 212 and towards the inside of the box 20.

[0139] The inclined segment 2131 is inclined relative to the first side wall 211, and the inclined segment 2131 is located on the side of the first side wall 211 away from the supporting member 1200, so that the avoiding space 201 is formed on the side of the inclined segment 2131 away from the inside of the box 20; that is, the spacing between the end of the inclined segment 2131 for connecting with the first side wall 211 and the supporting member 1200 is L5, and the spacing between the end of the inclined segment 2131 for connecting with the second side wall 212 and the supporting member 1200 is L6, wherein L5 < L6.

[0140] In the actual processing process, the avoiding structure 213 can be made by chamfering process; the included angle between the inclined section 2131 and the first side wall 211 is α, wherein 0° < α < 180°, the value of α can be any value between 0° and 180°, for example, the value of α can be, but is not limited to, 1°, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, 189°.

[0141] By adopting the technical scheme of the embodiment, the avoiding structure 213 adopts the structure of the inclined section 2131, which is simple in structure and simple to form, thereby being beneficial to reducing the manufacturing cost of the box body 20.

[0142] In some other embodiments of the present application, referring to FIGS. 3 and 4, the avoiding structure 213 further includes a first arc-shaped section 2132 connected between the first side wall 211 and the inclined section 2131, and / or the avoiding structure 213 further includes a second arc-shaped section 2133 connected between the second side wall 212 and the inclined section 2131.

[0143] The first arc-shaped section 2132 can refer to the part of the avoiding structure 213 connected between the first side wall 211 and the inclined section 2131; the shape of the first arc-shaped section 2132 can be various, for example, a circular arc, an elliptical arc, etc. For example, referring to FIG. 5, the first arc-shaped section 2132 and the inclined section 2131 are divided by a dashed line H. L5 can refer to the distance from the dashed line H to the support 1200.

[0144] The second arc-shaped section 2133 can refer to the part of the avoiding structure 213 connected between the second side wall 212 and the inclined section 2131; the shape of the second arc-shaped section 2133 can be various, for example, a circular arc, an elliptical arc, etc. For example, referring to FIG. 5, the second side wall 212 and the avoiding structure 213 are divided by a dashed line G. L5 can refer to the distance from the dashed line G to the support 1200.

[0145] In a possible implementation, the avoiding structure 213 further includes a first arc-shaped section 2132 connected between the first side wall 211 and the inclined section 2131; the first arc-shaped section 2132 can smoothly connect the first side wall 211 and the inclined section 2131, which is beneficial to reducing stress concentration, improving the structural reliability of the box body 20, and improving the use reliability of the battery 100.

[0146] In another possible implementation, the avoiding structure 213 further includes a second arc-shaped segment 2133 connected between the second side wall 212 and the inclined segment 2131; the second arc-shaped segment 2133 can smoothly connect the second side wall 212 and the inclined segment 2131, which is conducive to reducing stress concentration, improving the structural reliability of the box 20, and improving the use reliability of the battery 100.

[0147] In another possible implementation, the avoiding structure 213 further includes a first arc-shaped segment 2132 connected between the first side wall 211 and the inclined segment 2131, and a second arc-shaped segment 2133 connected between the second side wall 212 and the inclined segment 2131; the first arc-shaped segment 2132 can smoothly connect the first side wall 211 and the inclined segment 2131, and the second arc-shaped segment 2133 can smoothly connect the second side wall 212 and the inclined segment 2131, which is conducive to reducing stress concentration, improving the structural reliability of the box 20, and improving the use reliability of the battery 100.

[0148] By adopting the technical scheme of this embodiment, stress concentration can be reduced, the structural reliability of the box 20 can be improved, the use reliability of the battery 100 can be improved, and the processing and forming are also facilitated.

[0149] In some other embodiments of the present application, referring to FIGS. 5 and 6, the avoiding structure 213 is recessed inwardly toward the box 20 to form an avoiding gap 202, and the avoiding gap 202 forms an avoiding space 201.

[0150] From the appearance of the box 20, the box 20 forms a recessed structure between the first side wall 211 and the second side wall 212, and the recessed structure is the avoiding structure 213; the avoiding structure 213 is recessed inwardly toward the box 20, and the space formed by the recessing is the avoiding gap 202, i.e., the avoiding space 201; the cross-sectional shape of the avoiding structure 213 can be arc-shaped, polyline-shaped, or a mixture of polyline-shaped and arc-shaped. Of course, it can also be other structures.

[0151] By adopting the technical scheme of this embodiment, the avoiding structure 213 is recessed inwardly toward the box 20 to obtain the avoiding space 201, and the avoiding structure 213 is convenient to process and manufacture.

[0152] In some other embodiments of the present application, referring to FIGS. 5 and 6, the avoiding structure 213 includes a bending segment 2134 connected between the first side wall 211 and the second side wall 212, and the bending segment 2134 surrounds to form the avoiding gap 202.

[0153] The bending section 2134 protrudes into the box body 20, the bending section 2134 has a multi-section structure, the bending section 2134 includes a plurality of linear sub-sections connected in sequence, and the linear sub-sections have a linear shape; an included angle between two adjacent linear sub-sections is β, where 0°<β<180°, the value of β can be any value between 0° and 180°, for example, the value of β can be, but is not limited to, 1°, 5°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, 179°.

[0154] By adopting the technical scheme of this embodiment, the avoidance structure 213 adopts a bending structure, and the processing and molding of the box body 20 are simple.

[0155] In some other embodiments of the present application, referring to FIGS. 5 and 6, the bending section 2134 includes a first linear sub-section 21341 and a second linear sub-section 21342 intersecting with each other, the first linear sub-section 21341 is connected between the first side wall 211 and the second linear sub-section 21342, and the second linear sub-section 21342 is connected between the first linear sub-section 21341 and the second side wall 212.

[0156] The bending section 2134 includes two linear sub-sections, one of which is the first linear sub-section 21341, and the other of which is the second linear sub-section 21342, the first linear sub-section 21341 is connected to the first side wall 211, and the second linear sub-section 21342 is connected to the second side wall 212.

[0157] By adopting the technical scheme of this embodiment, the bending section 2134 adopts the structure of the first linear sub-section 21341 and the second linear sub-section 21342, which is simple in structure, and the processing and molding of the box body 20 are simpler.

[0158] In some other embodiments of the present application, referring to FIGS. 5 and 6, the first linear sub-section 21341 is perpendicular to the second linear sub-section 21342.

[0159] It can be understood that the first linear sub-section 21341 is perpendicular or close to perpendicular to the first side wall 211, so that the bending section 2134 has a stepped structure; for example, the included angle β between the first linear sub-section 21341 and the second linear sub-section 21342 ranges from 80° to 100°, where the value of β can be 80°, 100°, and any value between 80° and 100°, and the value of the included angle β between the first linear sub-section 21341 and the second linear sub-section 21342 can be, but is not limited to, 80°, 82°, 84°, 86°, 88°, 90°, 92°, 94°, 96°, 92°, 100°.

[0160] By adopting the technical scheme of this embodiment, the shape of the bending section 2134 is regular, and the processing and molding of the box body 20 are simpler.

[0161] In some other embodiments of the present application, referring to FIGS. 5 and 6, the bending section 2134 further comprises an arc-shaped sub-section 21343 connected between the first straight-line sub-section 21341 and the second straight-line sub-section 21342.

[0162] The arc-shaped sub-section 21343 can refer to a section connected between the first straight-line sub-section 21341 and the second straight-line sub-section 21342, and the shape of the section is arc-shaped, for example, a circular arc shape, an elliptical arc shape, etc.

[0163] By adopting the technical scheme of this embodiment, the arc-shaped sub-section 21343 can smoothly connect the first straight-line sub-section 21341 and the second straight-line sub-section 21342, which is conducive to reducing stress concentration, improving the structural reliability of the box body 20, improving the use reliability of the battery 100, and also facilitating the processing and molding.

[0164] In some other embodiments of the present application, referring to FIGS. 5 and 6, the first straight-line sub-section 21341 is perpendicular to the first side wall 211, and / or the second straight-line sub-section 21342 is perpendicular to the second side wall 212.

[0165] The first straight-line sub-section 21341 can be perpendicular or close to perpendicular to the first side wall 211; for example, the included angle between the first straight-line sub-section 21341 and the first side wall 211 is γ1, and 90°≤γ1≤100°; the value of γ1 can be 80°, 100°, or any value between 80° and 100°; γ1 can be, but is not limited to, 80°, 82°, 84°, 86°, 88°, 90°, 92°, 94°, 96°, 92°, or 100°.

[0166] The second straight-line sub-section 21342 can be perpendicular or close to perpendicular to the second side wall 212; for example, the included angle between the second straight-line sub-section 21342 and the second side wall 212 is γ2, and 90°≤γ2≤100°; the value of γ2 can be 80°, 100°, or any value between 80° and 100°, and the value of γ2 can be, but is not limited to, 80°, 82°, 84°, 86°, 88°, 90°, 92°, 94°, 96°, 92°, or 100°.

[0167] In a possible implementation, the first straight-line sub-section 21341 is perpendicular to the first side wall 211, and the first straight-line sub-section 21341 and the first side wall 211 can form a stepped structure, which is regular in structure and facilitates the processing and molding of the box body 20.

[0168] In yet another possible implementation, the second linear sub-section 21342 is perpendicular to the second side wall 212, and the second linear sub-section 21342 and the second side wall 212 can form a stepped structure, which is regular in structure and makes the processing and forming of the battery box 20 simpler.

[0169] In another possible implementation, the first linear sub-section 21341 is perpendicular to the first side wall 211, and the second linear sub-section 21342 is perpendicular to the second side wall 212, and the second linear sub-section 21342, the second side wall 212, the first linear sub-section 21341 and the second side wall 212 can form a stepped structure, which is regular in structure and makes the processing and forming of the battery box 20 simpler.

[0170] By adopting the technical scheme of this embodiment, the structure of the battery box 20 at the avoiding structure 213 is regular, and the processing and forming of the battery box 20 is simpler.

[0171] In some other embodiments of the present application, referring to FIGS. 3-6, the battery monomer 10 in the first battery 101 has a first end face 12 facing the second battery 102, the first end face 12 is provided with an electrode terminal 11, and the orthographic projection of the avoiding structure 213 on the first end face 12 is arranged to be offset from the part of the electrode terminal 11 protruding from the first end face 12.

[0172] The electrode terminal 11 is a conductive piece arranged on the shell of the battery monomer 10, and is connected with the tab of the electrode assembly to output the electric energy of the battery monomer 10 or charge the battery monomer 10. The electrode terminal 11 of the battery monomer 10 is generally two, and the two electrode terminals 11 are respectively connected with the positive and negative tabs of the electrode assembly. The electrode terminal 11 connected with the positive tab is the positive electrode terminal 11, and the electrode terminal 11 connected with the negative tab is the negative electrode terminal 11.

[0173] In the battery monomer 10 of the first battery 101, the end face of the shell of the battery monomer 10 facing the second battery 102 is the first end face 12, the electrode terminal 11 is arranged on the first end face 12, and at least part of the electrode terminal 11 protrudes from the end face. The electrode terminal 11 can be partially located in the shell and partially protrude from the first end face 12, or the electrode terminal 11 can be entirely located between the first end face 12 and the second battery 102.

[0174] The orthographic projection of the avoidance structure 213 on the first end face 12 can refer to the projection image of the avoidance structure 213 on the first end face 12 in the direction perpendicular to the first end face 12; the orthographic projection of the part of the electrode terminal 11 protruding from the first end face 12 on the first end face 12 can refer to the projection image of the part of the electrode terminal 11 protruding from the first end face 12 on the first end face 12 in the direction perpendicular to the first end face 12, and the two projection images are not intersected and are staggered; in the first battery 101, the avoidance structure 213 is located on the side of the electrode terminal 11 facing the support 1200, the electrode terminal 11 and the avoidance structure 213 are staggered, the electrode terminal 11 is arranged opposite to the other area of the box 20 except the avoidance structure 213, the risk of interference between the electrode terminal 11 and the avoidance structure 213 is reduced, the limitation of the increase of the size of the battery monomer 10 in the first direction due to the interference between the electrode terminal 11 and the avoidance structure 213 is reduced, and the size of the battery monomer 10 in the first direction is more conducive to being improved.

[0175] For example, the electrode terminal 11 is arranged opposite to the second side wall 212, then after the second side wall 212 moves towards the second battery 102, the electrode terminal 11 and the first end face 12 can also move towards the second battery 102, so that the battery monomer 10 with larger size and larger capacity in the first direction can be selected and placed in the box 20, which is conducive to improving the capacity of the battery 100 and the energy storage device 1000.

[0176] By adopting the technical scheme of the embodiment, in the first battery 101, the electrode terminal 11 and the avoidance structure 213 are staggered, the electrode terminal 11 is arranged opposite to the other area of the side of the box 20 facing the second battery 102 except the avoidance structure 213, then after the other area of the side of the box 20 facing the second battery 102 except the avoidance structure 213 moves towards the second battery 102, the electrode terminal 11 and the first end face 12 can also move towards the second battery 102, so that the battery monomer 10 with larger size and larger capacity in the first direction can be selected and placed in the box 20, which is conducive to improving the capacity of the battery 100 and the energy storage device 1000.

[0177] In some other embodiments of the present application, referring to FIGS. 3-6, each supporting piece 1300 further comprises a connecting part 1320, and the supporting part 1310 is connected with the connecting part 1320 on the side in the first direction.

[0178] The support member 1300 includes two parts, a support part 1310 for supporting a part of the battery 100, and a connecting part 1320 for connecting with the support member 1200, the connecting part 1320 is located at one side of the support part 1310 having two oppositely arranged side parts in the first direction; for example, the connecting part 1320 of the second support member 1302 and the second battery 102 are located at the same side or opposite side of the support part 1310 of the second support member 1302, the connecting part 1320 of the first support member 1301 and the first battery 101 are located at the same side or opposite side of the support part 1310 of the first support member 1301, the connecting part 1320 of the first support member 1301 is located between the first battery 101 and the support member 1200, and the connecting part 1320 of the second support member 1302 is located between the second battery 102 and the support member 1200.

[0179] For example, the support member 1300 can be formed by bending a plate member, and the plate member is bent to form the connecting part 1320 and the support part 1310; the cross-sectional shape of the support member 1300 can be various, for example, a right angle shape, an obtuse angle shape, an acute angle shape, etc.

[0180] By adopting the technical scheme of this embodiment, the connecting part 1320 can increase the connection area between the support member 1300 and the support member 1200, and can improve the reliability of the battery 100 support.

[0181] In another embodiment of the present application, referring to FIGS. 3-6, the connecting part 1320 and the battery 100 supported on the support part 1310 are located at the same side of the support part 1310.

[0182] The connecting part 1320 and the battery 100 supported on the support part 1310 are located at the same side of the support part 1310; for example, the connecting part 1320 of the second support member 1302 is located between the second battery 102 and the support member 1200, and the connecting part 1320 of the first support member 1301 is located between the first battery 101 and the support member 1200.

[0183] By adopting the technical scheme of this embodiment, the connecting part 1320 of the support member 1300 is located between the battery 100 supported on the connecting part 1320 of the support member 1300 and the support member 1200, which can reduce the risk of interference of the connecting part 1320 of the support member 1300 with other batteries 100, and is conducive to reducing the spacing between the batteries 100 and the compactness of the energy storage device 1000.

[0184] In some other embodiments of the present application, referring to FIG. 1, FIG. 8 and FIG. 9, the number of the support 1200 is multiple, the multiple supports 1200 are arranged at intervals along the second direction, the battery pack 1100 is arranged between the adjacent two supports 1200, and the supporting member 1300 is arranged on the opposite side of the adjacent two supports 1200. The box 20 of the first battery 101 is connected with the avoiding structure 213 on the opposite side along the second direction, and the second direction is perpendicular to the first direction.

[0185] The number of the support 1200 is multiple, and the number between the supports 1200 can be, but is not limited to, two, three or more than four. The multiple supports 1200 are arranged at intervals along the second direction, so that the accommodation space is formed between the adjacent two supports 1200, and the accommodation space can accommodate the battery pack 1100. The number of the accommodation space and the battery pack 1100 is multiple, and the storage capacity of the energy storage device 1000 can be increased to meet the greater energy storage demand.

[0186] The supporting member 1300 is arranged on the opposite side of the adjacent two supports 1200, so that the supporting member 1300 can support the battery 100 in the battery pack 1100 on the opposite side along the second direction, and the supporting stability of the battery 100 is improved. The battery pack 1100 can be arranged between all the adjacent two supports 1200, two battery packs 1100 share one support 1200, and the supporting member 1300 is arranged on the opposite side of the support 1200. The battery pack 1100 can be supported by two supports 1200, and the supports 1200 do not share the support 1200 between the battery packs 1100. The supporting member 1300 is arranged on one side of the support 1200.

[0187] The avoiding structure 213 is arranged on the opposite side of the battery 100 along the second direction, so that the two avoiding structures 213 can avoid the two supporting members 1300 for supporting the second battery 102.

[0188] By adopting the technical scheme of the embodiment, the supporting member 1300 between the adjacent two supports 1200 can support the battery 100 in the battery pack 1100 on the opposite side along the second direction, and the supporting stability of the battery 100 is improved.

[0189] In some other embodiments of the present application, referring to FIG. 1, FIG. 8 and FIG. 9, the support 1200 comprises a first support part 1210 and a second support part 1220, the first support part 1210 and the second support part 1220 are arranged along the third direction, the opposite ends of the supporting member 1300 along the third direction are connected with the first support part 1210 and the second support part 1220 respectively, and the third direction is perpendicular to the first direction and the second direction.

[0190] The support 1200 is divided into two parts along the third direction, one of which is the first support part 1210, and the other is the second support part 1220.

[0191] For example, referring to FIG. 1, the support 1200 includes two vertical rods arranged along the third direction, one of which is the first support part 1210, and the other is the second support part 1220.

[0192] For example, referring to FIG. 8, the support 1200 can be a plate member having two side walls arranged opposite to each other along the third direction, one of which is the first support part 1210, and the other is the second support part 1220.

[0193] The support 1200 is divided into two parts along the third direction, one of which is the first support part 1210, and the other is the second support part 1220.

[0194] By adopting the technical scheme of this embodiment, the support 1300 can have a relatively long size along the third direction, and the battery 100 can be supported by a large area along the third direction, so that the support stability of the battery 100 is good. In addition, the two ends of the support 1300 are connected with the support 1200, the connection positions between the support 1200 and the support 1300 are more, the connection reliability is good, and the use reliability of the energy storage device 1000 can be improved.

[0195] The energy storage device 1000 will be described below in combination with some embodiments.

[0196] Embodiment one

[0197] In this embodiment, referring to FIGS. 1-4 and 7, the energy storage device 1000 includes a support 1200, a battery pack 1100, and a plurality of supports 1300, the plurality of supports 1300 are arranged on the side of the support 1200 along the first direction, each support 1300 includes a support part 1310; the battery pack 1100 includes a plurality of batteries 100, the plurality of batteries 100 are arranged on the support part 1310 of each support 1300 along the first direction, and the support part 1310 is located between adjacent two batteries 100; each battery 100 includes a box body 20 and a battery monomer 10 arranged in the box body 20; adjacent two batteries 100 are divided into a first battery 101 and a second battery 102, the support 1300 for supporting the first battery 101 is a first support 1301, and the support 1300 for supporting the second battery 102 is a second support 1302; the box body 20 of the first battery 101 is provided with an avoiding structure 213 for avoiding the support part 1310 of the second support 1302 on the side facing the second battery 102.

[0198] In the embodiment, the box 20 of the first battery 101 comprises a first side wall 211 and a second side wall 212, the first side wall 211 is arranged to face the support 1200, the second side wall 212 is arranged to face the second battery 102, and the avoiding structure 213 is connected between the first side wall 211 and the second side wall 212, and the avoiding structure 213 is formed with the avoiding space 201 for avoiding the support part 1310 of the second support 1302.

[0199] In the embodiment, at least part of the support part 1310 of the second support 1302 is located in the avoiding space 201.

[0200] In the embodiment, the distance between the side of the support part 1310 of the second support 1302 and the support 1200 is L1, and the distance between the second side wall 212 and the support 1200 is L2, wherein L1≤L2.

[0201] In the embodiment, the distance between the second side wall 212 and the second battery 102 is L3, and the size of the support part 1310 of the second support 1302 in the first direction is L4, wherein L3<L4.

[0202] In the embodiment, the avoiding structure 213 comprises an inclined section 2131 connected between the first side wall 211 and the second side wall 212, and the inclined section 2131 extends obliquely from the end of the inclined section 2131 connected with the first side wall 211 towards the second side wall 212 and into the box 20.

[0203] In the embodiment, the avoiding structure 213 further comprises a first arc-shaped section 2132 connected between the first side wall 211 and the inclined section 2131, and / or the avoiding structure 213 further comprises a second arc-shaped section 2133 connected between the second side wall 212 and the inclined section 2131.

[0204] In the embodiment, the battery monomer 10 in the first battery 101 has a first end face 12 arranged to face the second battery 102, the first end face 12 is provided with the electrode terminal 11, and the avoiding structure 213 is arranged to be offset from the part of the electrode terminal 11 protruding out of the first end face 12 in the orthographic projection of the first end face 12.

[0205] In the embodiment, each support 1300 further comprises a connecting part 1320, and the support part 1310 is connected with the connecting part 1320 at the side in the first direction.

[0206] In the embodiment, the connecting part 1320 and the battery 100 supported on the support part 1310 are located on the same side of the support part 1310.

[0207] In the embodiment, the number of the support 1200 is multiple, the multiple supports 1200 are arranged at intervals along the second direction, the battery pack 1100 is arranged between the adjacent two supports 1200, and the supporting member 1300 is arranged on the side opposite to each other of the adjacent two supports 1200; the box 20 of the first battery 101 is connected with the avoiding structure 213 on the two sides opposite to each other along the second direction, and the second direction is perpendicular to the first direction.

[0208] In the embodiment, the support 1200 comprises a first support part 1210 and a second support part 1220, the first support part 1210 and the second support part 1220 are arranged along the third direction, the supporting member 1300 is connected with the first support part 1210 and the second support part 1220 at the opposite ends along the third direction, and the third direction is perpendicular to the first direction and the second direction.

[0209] Embodiment two

[0210] The difference between the embodiment and the embodiment one is that, referring to FIG. 5 and FIG. 6, the avoiding structure 213 is recessed into the box 20 to form the avoiding gap 202, and the avoiding gap 202 forms the avoiding space 201.

[0211] In the embodiment, the avoiding structure 213 comprises a bending section 2134, the bending section 2134 is connected between the first side wall 211 and the second side wall 212, and the bending section 2134 surrounds to form the avoiding gap 202.

[0212] In the embodiment, the bending section 2134 comprises a first straight line subsection 21341 and a second straight line subsection 21342 intersecting with each other, the first straight line subsection 21341 is connected between the first side wall 211 and the second straight line subsection 21342, and the second straight line subsection 21342 is connected between the first straight line subsection 21341 and the second side wall 212.

[0213] In the embodiment, the first straight line subsection 21341 is perpendicular to the second straight line subsection 21342.

[0214] In the embodiment, the bending section 2134 further comprises an arc-shaped subsection 21343, the arc-shaped subsection 21343 is connected between the first straight line subsection 21341 and the second straight line subsection 21342.

[0215] In the embodiment, the first straight line subsection 21341 is perpendicular to the first side wall 211, and / or the second straight line subsection 21342 is perpendicular to the second side wall 212.

[0216] The following describes the battery 100 of the embodiment.

[0217] In some embodiments of the present application, referring to FIGS. 1-7, a battery 100 is provided, which comprises a box 20 and a battery cell 10; the battery cell 10 is located in the box 20, the box 20 comprises a first side wall 211, a second side wall 212 and a third side wall 221, the second side wall 212 and the third side wall 221 are arranged in a first direction, the battery cell 10 is located between the second side wall 212 and the third side wall 221, the first side wall 211 is located between the second side wall 212 and the third side wall 221, and the first side wall 211 is connected with the second side wall 212 through an avoiding structure 213, and the avoiding structure 213 is formed with an avoiding space 201 away from the side of the box 20.

[0218] Referring to FIG. 7, the first direction can refer to the height direction of the battery 100, and the second direction can refer to the width direction of the battery 100.

[0219] The second side wall 212 can refer to the top wall of the box 20, the third side wall 221 can refer to the bottom wall of the box 20, and the first side wall 211 can refer to the side wall of the box 20 between the bottom wall and the top wall. The battery cell 10 is located in the box 20, the battery cell 10 is located between the second side wall 212 and the third side wall 221, the battery cell 10 can be installed on the third side wall 221, and the third side wall 221 supports the battery cell 10. The box 20 mainly protects the battery cell 10, and the battery cell 10 is the smallest storage unit in the battery 100, which can store and release electricity, so that the battery 100 can be used as a power supply.

[0220] For example, the first part 21 is a plate structure, the second part 22 is a hollow structure with an opening at one end, and the first part 21 is located on the upper side of the second part 22; the second side wall 212 can be the middle region of the first part 21, the edge of the first part 21 forms the avoiding structure 213, the first side wall 211 is the side wall of the second part 22, and the third side wall 221 can be the side wall of the second part 22 opposite to the first part 21, i.e., the bottom wall of the box 20; or, the second side wall 212 is the first part 21, the side wall of the second part 22 close to the opening end forms the avoiding structure 213, the other region of the side wall of the second part 22 except the avoiding structure 213 forms the first side wall 211, and the third side wall 221 can be the side wall of the second part 22 opposite to the first part 21.

[0221] For example, referring to FIGS. 5 and 7, the first part 21 is a hollow structure with an opening, the second part 22 is a plate structure or a hollow structure with an opening at one end, and the first part 21 is located on the upper side of the second part 22; the second side wall 212 can be a top wall oppositely arranged with the first part 21 and the second part 22, the upper end of the side wall of the first part 21 forms an avoiding structure 213, and the other areas of the side wall except the avoiding structure 213 form a first side wall 211; the third side wall 221 can be a side wall oppositely arranged with the first part 21 or the second part 22.

[0222] In the process of installing the battery 100 in the energy storage device 1000, after the plurality of batteries 100 are installed on the supporting part 1310 of the supporting member 1300 of the energy storage device 1000 along the first direction, the second side wall 212 faces the adjacent battery 100, the third side wall 221 is supported on the supporting part 1310 of the supporting member 1300, the first side wall 211 is located on the same side of the battery 100 as the supporting member 1300, and the avoiding space 201 formed by the avoiding structure 213 connected between the first side wall 211 and the second side wall 212 can be used to accommodate the supporting part 1310 of the supporting member 1300 supporting the adjacent battery 100, so that the second side wall 212 of the battery 100 can move towards the adjacent battery 100, thereby increasing the internal space of the box body 20 of the battery 100, so that a larger size and larger capacity battery monomer 10 can be accommodated in the battery 100, which is beneficial to improve the capacity of the battery 100 and the energy storage device 1000; in addition, the gap between the batteries 100 can also be reduced, and the space utilization and volume energy density in the energy storage device 1000 can be improved.

[0223] In some other embodiments of the present application, referring to FIGS. 3, 4 and 7, the avoiding structure 213 includes an inclined section 2131 connected between the first side wall 211 and the second side wall 212, and the inclined section 2131 extends obliquely from the end of the inclined section 2131 used to connect with the first side wall 211 towards the second side wall 212 and towards the inside of the box body 20.

[0224] By adopting the technical solution of this embodiment, the avoiding structure 213 adopts the structure of the inclined section 2131, which is simple in structure and simple to form, and is beneficial to reduce the manufacturing cost of the box body 20.

[0225] In some other embodiments of the present application, referring to FIGS. 3 and 4, the avoiding structure 213 further includes a first arc-shaped section 2132 connected between the first side wall 211 and the inclined section 2131; and / or, the avoiding structure 213 further includes a second arc-shaped section 2133 connected between the second side wall 212 and the inclined section 2131.

[0226] By adopting the technical scheme of the embodiment, stress concentration can be reduced, the structural reliability of the box body 20 can be improved, the use reliability of the battery 100 can be improved, and the processing and forming are facilitated.

[0227] In some other embodiments of the present application, referring to FIGS. 5 and 6, the avoiding structure 213 is recessed inwardly toward the box body 20 to form the avoiding gap 202, and the avoiding gap 202 forms the avoiding space 201.

[0228] By adopting the technical scheme of the embodiment, the avoiding structure 213 is recessed inwardly toward the box body 20 to form the avoiding space 201, and the avoiding structure 213 is convenient to process and manufacture.

[0229] In some other embodiments of the present application, referring to FIGS. 5 and 6, the avoiding structure 213 includes a bending section 2134 connected between the first side wall 211 and the second side wall 212, and the bending section 2134 surrounds to form the avoiding gap 202.

[0230] By adopting the technical scheme of the embodiment, the avoiding structure 213 adopts the bending structure, and the processing and forming of the box body 20 are simple.

[0231] In some other embodiments of the present application, referring to FIGS. 5 and 6, the bending section 2134 includes a first straight line sub-section 21341 and a second straight line sub-section 21342 intersecting with each other, the first straight line sub-section 21341 is connected between the first side wall 211 and the second straight line sub-section 21342, and the second straight line sub-section 21342 is connected between the first straight line sub-section 21341 and the second side wall 212.

[0232] By adopting the technical scheme of the embodiment, the bending section 2134 adopts the structure of the first straight line sub-section 21341 and the second straight line sub-section 21342, which is simple in structure and facilitates the processing and forming of the box body 20.

[0233] In some other embodiments of the present application, referring to FIGS. 5 and 6, the first straight line sub-section 21341 is perpendicular to the second straight line sub-section 21342.

[0234] By adopting the technical scheme of the embodiment, the shape of the bending section 2134 is regular, and the processing and forming of the box body 20 are facilitated.

[0235] In some other embodiments of the present application, referring to FIGS. 6 and 7, the bending section 2134 further includes an arc-shaped sub-section 21343 connected between the first straight line sub-section 21341 and the second straight line sub-section 21342.

[0236] By adopting the technical scheme of the embodiment, the arc-shaped sub-section 21343 can smoothly and connectively transition the first straight-line sub-section 21341 and the second straight-line sub-section 21342, which is conducive to reducing stress concentration, improving the structural reliability of the box body 20, improving the use reliability of the battery 100, and also facilitating the processing and forming.

[0237] In some other embodiments of the present application, referring to FIGS. 5 and 6, the first straight-line sub-section 21341 is perpendicular to the first side wall 211, and / or the second straight-line sub-section 21342 is perpendicular to the second side wall 212.

[0238] By adopting the technical scheme of the embodiment, the structure of the box body 20 at the avoidance structure 213 is regular, and the processing and forming of the box body 20 are simpler.

[0239] In some other embodiments of the present application, referring to FIGS. 3-6, the battery monomer 10 has a first end surface 12 facing the second side wall 212, the first end surface 12 is provided with an electrode terminal 11, and the orthographic projection of the avoidance structure 213 on the first end surface 12 is arranged to be offset from the part of the electrode terminal 11 protruding from the first end surface 12.

[0240] The end surface of the shell of the battery monomer 10 facing the second side wall 212 is the first end surface 12, the electrode terminal 11 is arranged on the first end surface 12, and at least part of the electrode terminal 11 protrudes from the end surface. The electrode terminal 11 can be partially located in the shell and partially protrude from the first end surface 12, or the electrode terminal 11 can be entirely located between the first end surface 12 and the second side wall 212.

[0241] By adopting the technical scheme of the embodiment, the electrode terminal 11 is offset from the avoidance structure 213, and the electrode terminal 11 is arranged opposite to the second side wall 212. Then, after the second side wall 212 moves towards the second battery 102, the electrode terminal 11 and the first end surface 12 can also move towards the second battery 102, so that a battery monomer 10 with a larger size and larger capacity in the first direction can be selected and placed in the box body 20, which is conducive to improving the capacity of the battery 100 and the energy storage device 1000.

[0242] In some other embodiments of the present application, referring to FIG. 7, the second side wall 212 is connected with the avoidance structure 213 on both sides along the second direction, and the second direction is perpendicular to the first direction.

[0243] By adopting the technical scheme of the embodiment, the second reserve is connected with the avoiding structure 213 on the opposite sides in the second direction, and the two avoiding structures 213 can avoid the bearing part 1310 of the two bearing pieces 1300 for bearing the adjacent battery 100, so that the second side wall 212 can be closer to the adjacent battery 100, the internal space of the box body 20 is improved, and thus the battery monomer 10 with larger size and larger capacity in the first direction can be selected and placed in the box body 20, which is beneficial to improve the capacity of the battery 100 and the energy storage device 1000.

[0244] The battery 100 of the present application is described below in combination with some embodiments.

[0245] Embodiment three

[0246] In the embodiment, referring to FIGS. 1-4 and 7, the battery 100 comprises a box body 20 and a battery monomer 10; the box body 20 comprises a first side wall 211, a second side wall 212 and a third side wall 221, the second side wall 212 and the third side wall 221 are arranged in the first direction, the battery monomer 10 is installed on the third side wall 221, the battery monomer 10 is located between the second side wall 212 and the third side wall 221, the first side wall 211 is located between the second side wall 212 and the third side wall 221, the avoiding structure 213 is connected between the first side wall 211 and the second side wall 212, and the avoiding space 201 is formed at the back of the side part in the box body 20.

[0247] In the embodiment, the avoiding structure 213 comprises an inclined section 2131, the inclined section 2131 is connected between the first side wall 211 and the second side wall 212, and the inclined section 2131 extends obliquely from the end part for connecting with the first side wall 211 towards the second side wall 212 and towards the inside of the box body 20.

[0248] In the embodiment, the avoiding structure 213 further comprises a first arc-shaped section 2132 connected between the first side wall 211 and the inclined section 2131, and / or the avoiding structure 213 further comprises a second arc-shaped section 2133 connected between the second side wall 212 and the inclined section 2131.

[0249] In the embodiment, the battery monomer 10 has a first end face 12 facing the second side wall 212, the first end face 12 is provided with an electrode terminal 11, and the projection of the avoiding structure 213 on the first end face 12 is offset from the part of the electrode terminal 11 protruding from the first end face 12.

[0250] In the embodiment, the second side wall 212 is connected with the avoiding structure 213 on the opposite sides in the second direction, and the second direction is perpendicular to the first direction.

[0251] Embodiment Four

[0252] The difference between this embodiment and Embodiment Three is that, as shown in FIGS. 5 and 6, the avoidance structure 213 is recessed inwardly toward the box 20 to form the avoidance gap 202, which forms the avoidance space 201.

[0253] In this embodiment, the avoidance structure 213 includes a bent segment 2134 connected between the first sidewall 211 and the second sidewall 212, which surrounds to form the avoidance gap 202.

[0254] In this embodiment, the bent segment 2134 includes a first straight sub-segment 21341 and a second straight sub-segment 21342 intersecting with each other, the first straight sub-segment 21341 connected between the first sidewall 211 and the second straight sub-segment 21342, and the second straight sub-segment 21342 connected between the first straight sub-segment 21341 and the second sidewall 212.

[0255] In this embodiment, the first straight sub-segment 21341 is perpendicular to the second straight sub-segment 21342.

[0256] In this embodiment, the bent segment 2134 further includes an arc sub-segment 21343 connected between the first straight sub-segment 21341 and the second straight sub-segment 21342.

[0257] In this embodiment, the first straight sub-segment 21341 is perpendicular to the first sidewall 211, and / or the second straight sub-segment 21342 is perpendicular to the second sidewall 212.

[0258] The above description of each embodiment tends to emphasize the differences between each embodiment, and the same or similar parts can be referred to each other, which will not be described herein for the sake of brevity.

[0259] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the 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, which should be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage device, wherein: include, Support members; A plurality of supporting members are installed at intervals on the side of the support member along the first direction, each supporting member comprising a supporting portion; A battery pack, the battery pack comprising a plurality of batteries, the plurality of batteries being sequentially mounted on the supporting portion of each supporting member along the first direction, the supporting portion being located between two adjacent batteries; each battery comprising a housing and a battery cell disposed within the housing; the two adjacent batteries being respectively a first battery and a second battery, the supporting member for supporting the first battery being a first supporting member, and the supporting member for supporting the second battery being a second supporting member; A side portion of the box of the first battery facing the second battery is provided with an avoidance structure for avoiding the supporting portion of the second supporting member.

2. The energy storage device according to claim 1, wherein: The box body of the first battery includes a first side wall and a second side wall, the first side wall is arranged facing the support member, and the second side wall is arranged facing the second battery, the avoidance structure is connected between the first side wall and the second side wall, and the side of the avoidance structure facing away from the battery cell is formed with an avoidance space for avoiding the supporting part of the second supporting member.

3. The energy storage device according to claim 2, wherein: At least a portion of the supporting portion of the second supporting member is located in the avoidance space.

4. The energy storage device according to claim 2 or 3, wherein: The distance between the side surface of the supporting portion of the second supporting member facing away from the supporting member and the supporting member is L1, and the distance between the second side wall and the supporting member is L2, wherein L1≤L2.

5. The energy storage device according to any one of claims 2 to 4, wherein: The distance between the second side wall and the second battery is L3, and the size of the supporting portion of the second supporting member in the first direction is L4, wherein L3<L4.

6. The energy storage device according to any one of claims 2 to 5, wherein: The avoidance structure includes an inclined section connected between the first side wall and the second side wall. The inclined section extends obliquely from an end portion of the inclined section connected to the first side wall toward the second side wall and toward the inside of the box.

7. The energy storage device according to claim 6, wherein: The avoidance structure further includes a first arc segment connected between the first side wall and the inclined segment; And / or, the avoidance structure further includes a second arc segment, wherein the second arc segment is connected between the second side wall and the inclined segment.

8. The energy storage device according to any one of claims 2 to 5, wherein: The avoidance structure is recessed toward the box body to form a avoidance gap, and the avoidance gap forms the avoidance space.

9. The energy storage device according to claim 8, wherein: The avoidance structure includes a bending section connected between the first side wall and the second side wall, and the bending section is arranged to form the avoidance gap.

10. The energy storage device according to claim 9, wherein: The bending section includes a first straight line sub-segment and a second straight line sub-segment intersecting each other, wherein the first straight line sub-segment is connected between the first side wall and the second straight line sub-segment, and the second straight line sub-segment is connected between the first straight line sub-segment and the second side wall.

11. The energy storage device according to claim 10, wherein: The first straight line sub-segment is perpendicular to the second straight line sub-segment.

12. The energy storage device according to claim 10 or 11, wherein: The bending segment further includes an arcuate sub-segment, and the arcuate sub-segment is connected between the first straight line sub-segment and the second straight line sub-segment.

13. The energy storage device according to any one of claims 10 to 12, wherein: The first straight line sub-segment is perpendicular to the first side wall, and / or the second straight line sub-segment is perpendicular to the second side wall.

14. The energy storage device according to any one of claims 1 to 13, wherein: The battery cell in the first battery has a first end face facing the second battery, the first end face is provided with an electrode terminal, and the orthographic projection of the avoidance structure on the first end face is staggered with the orthographic projection of the portion of the electrode terminal protruding from the first end face on the first end face.

15. The energy storage device according to any one of claims 1 to 14, wherein: Each of the supporting members further includes a connecting portion, and the supporting portion is connected to the connecting portion at a side portion in the first direction.

16. The energy storage device according to claim 15, wherein: The connecting portion and the battery supported on the supporting portion are located on the same side of the supporting portion.

17. The energy storage device according to any one of claims 1 to 16, wherein: There are multiple support members, and the multiple support members are arranged at intervals along the second direction. The battery pack is provided between two adjacent support members, and the supporting members are provided on the sides opposite to each other of two adjacent support members; the avoidance structure is provided on the opposite sides of the box body of the first battery along the second direction, and the second direction is perpendicular to the first direction.

18. The energy storage device according to claim 17, wherein: The support member includes a first support portion and a second support portion, the first support portion and the second support portion are arranged along a third direction, and the supporting member is connected to the first support portion and the second support portion at opposite ends along the third direction, respectively, and the third direction is perpendicular to the first direction and the second direction.

19. A battery, wherein: include: Battery cells; Box; The battery cell is located in the box body, and the box body includes a first side wall, a second side wall and a third side wall. The second side wall and the third side wall are arranged at intervals along a first direction. The battery cell is located between the second side wall and the third side wall. The first side wall is located between the second side wall and the third side wall. An avoidance structure is connected between the first side wall and the second side wall, and an avoidance space is formed on the side of the avoidance structure facing away from the inside of the box body.

20. The battery of claim 19, wherein: The avoidance structure includes an inclined section connected between the first side wall and the second side wall. The inclined section extends obliquely from an end portion of the inclined section connected to the first side wall toward the second side wall and toward the inside of the box.

21. The battery according to claim 20, wherein: The avoidance structure further includes a first arc segment connected between the first side wall and the inclined segment; And / or, the avoidance structure further includes a second arc segment, wherein the second arc segment is connected between the second side wall and the inclined segment.

22. The battery of claim 19, wherein: The avoidance structure is recessed toward the box body to form a avoidance gap, and the avoidance gap forms the avoidance space.

23. The battery of claim 22, wherein: The avoidance structure includes a bending section connected between the first side wall and the second side wall, and the bending section is arranged to form the avoidance gap.

24. The battery of claim 23, wherein: The bending section includes a first straight line sub-segment and a second straight line sub-segment intersecting each other, wherein the first straight line sub-segment is connected between the first side wall and the second straight line sub-segment, and the second straight line sub-segment is connected between the first straight line sub-segment and the second side wall.

25. The battery of claim 24, wherein: The first straight line sub-segment is perpendicular to the second straight line sub-segment.

26. A battery according to claim 24 or 25, wherein: The bending segment further includes an arcuate sub-segment, and the arcuate sub-segment is connected between the first straight line sub-segment and the second straight line sub-segment.

27. The battery according to any one of claims 24 to 26, wherein: The first straight line sub-segment is perpendicular to the first side wall, and / or the second straight line sub-segment is perpendicular to the second side wall.

28. The battery according to any one of claims 19 to 27, wherein: The battery cell has a first end surface facing the second side wall, an electrode terminal is provided on the first end surface, and an orthographic projection of the avoidance structure on the first end surface is staggered with an orthographic projection of a portion of the electrode terminal protruding from the first end surface on the first end surface.

29. The battery according to any one of claims 19 to 28, wherein: The avoidance structures are connected to two opposite sides of the second side wall along a second direction, and the second direction is perpendicular to the first direction.

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