Battery, grouping method, and electric device

Abstract

A battery (100), a grouping method, and an electric device. The battery (100) comprises: a frame (102), an accommodating cavity (101) being provided in the frame (102), and an opening (103) in communication with the accommodating cavity (101) being provided on one side of the frame (102) in a first direction; a plurality of cylindrical battery cells (20), the plurality of cylindrical battery cells (10) being accommodated in the accommodating cavity (101); and at least one insulating and limiting strip (13), the insulating and limiting strip (13) being accommodated in the accommodating cavity (101), and two adjacent cylindrical battery cells (20) being separated and limited by the at least one insulating and limiting strip (13). The battery (100) can simplify the installation of a cylindrical battery module and reduce installation time.

Description

Battery, assembly method and power-using device

[0001] Priority information

[0002] This application claims priority and benefits of patent application No. 202410133204.6 filed with the State Intellectual Property Office of China on January 30, 2024, and the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the field of batteries, and in particular to a battery, a grouping method, and an electrical device. Background Art

[0004] In related technologies, battery cells are mostly grouped by inserting them into a frame. The insertion process places high demands on the positioning process and positioning accuracy, places high demands on equipment, and requires a large amount of glue to improve strength and rigidity. However, the glue is expensive and takes a long time to cure. After the glue is filled, the battery cells are difficult to replace.

[0005] Summary of the Invention

[0006] In view of the above problems, the present application provides a battery, a grouping method and an electrical device, which can solve the problems of high position accuracy requirements and long grouping time during the battery cell grouping process.

[0007] In a first aspect, the present application provides a battery, comprising:

[0008] a frame, wherein a receiving cavity is provided in the frame, and an opening communicating with the receiving cavity is provided on one side of the frame along the first direction;

[0009] A plurality of cylindrical battery cells, wherein the plurality of cylindrical battery cells are accommodated in the accommodation cavity;

[0010] At least one insulating limiting strip is accommodated in the accommodating cavity, and two adjacent cylindrical battery cells are separated and limited by the at least one insulating limiting strip.

[0011] In the technical solution of the embodiment of the present application, when the cylindrical battery cells are grouped, the openings can be placed upward in the vertical direction, and multiple cylindrical battery cells and insulating limit bars can be loaded into the accommodating cavity from top to bottom from the openings. During the grouping process of the cylindrical battery cells, the position accuracy requirements for the placement of the cylindrical battery cells and the insulating limit bars are low. After placement, they will automatically correct to the most stable position under the action of gravity. They are adaptable and the arrangement has self-stability. The positions of the cylindrical battery cells and the insulating limit bars are reliable. Moreover, as the number of cylindrical battery cells and insulating limit bars increases, the fit between the cylindrical battery cells and the insulating limit bars automatically becomes tighter and tighter. The installation is simple and time-saving, and the cylindrical battery cells can be limited by the insulating limit bars and the frame.

[0012] In some embodiments, the length direction of the cylindrical battery cell is along the second direction, the length direction of the insulating limiting strip is along the second direction, and the second direction and the first direction are perpendicular to each other.

[0013] The length direction of the insulating limit strip is parallel to the length direction of the cylindrical battery cell, so that the contact area between the insulating limit strip and the cylindrical battery cell is larger in the length direction, which is beneficial to improving the limiting effect of the insulating limit strip on the cylindrical battery cell.

[0014] In some embodiments, the battery includes multiple rows of cylindrical battery cells arranged at intervals along the first direction, the length direction of the cylindrical battery cells is along the second direction, and two adjacent rows of cylindrical battery cells along the first direction are separated and limited by at least one insulating limit bar, and / or, two adjacent cylindrical battery cells in the same row of cylindrical battery cells are separated and limited by at least one insulating limit bar, and the second direction and the first direction are perpendicular to each other.

[0015] On the one hand, the insulating limit strips can separate the cylindrical battery cells to achieve electrical isolation between adjacent cylindrical battery cells, preventing the cylindrical surfaces of adjacent cylindrical battery cells in the same row or different rows from contacting each other and causing short circuits. On the other hand, the insulating limit strips can also limit the position of the cylindrical battery cells to prevent them from moving. The battery includes multiple rows of cylindrical battery cells arranged at intervals along the first direction, which can make the arrangement of the cylindrical battery cells more regular, allowing for the placement of a larger number of cylindrical battery cells, thereby improving the energy density of the battery.

[0016] In some embodiments, the at least one insulating limit bar includes multiple insulating limit bars, and the multiple insulating limit bars are arranged in a row along a third direction. Two adjacent rows of cylindrical battery cells along the first direction are limited by a row of insulating limit bars, and the third direction, the first direction and the second direction are perpendicular to each other.

[0017] Along the first direction, two adjacent rows of cylindrical battery cells are limited by a row of insulating limit strips, so that the two adjacent rows of cylindrical battery cells are tightly matched and not easily shifted.

[0018] In some embodiments, the bottom surface of the accommodating cavity is provided with a plurality of first cylindrical accommodating grooves, and the plurality of first cylindrical accommodating grooves are arranged at intervals along a third direction, and the length direction of the first cylindrical accommodating grooves is along the second direction, and the plurality of cylindrical battery cells in a row of cylindrical battery cells closest to the bottom surface of the accommodating cavity are respectively accommodated in the plurality of first cylindrical accommodating grooves in a one-to-one correspondence with their parts, and the third direction, the first direction and the second direction are perpendicular to each other.

[0019] The first cylindrical accommodating groove is used to adapt to the first row of cylindrical battery cells, and can limit the first row of cylindrical battery cells on the bottom surface of the accommodating cavity to avoid or reduce the displacement of the cylindrical battery cells.

[0020] In some embodiments, the at least one insulating limiting strip includes a first insulating limiting strip, the first insulating limiting strip being provided with a second cylindrical surface accommodating groove, a third cylindrical surface accommodating groove, and a fourth cylindrical surface accommodating groove;

[0021] In two adjacent rows of cylindrical battery cells along the first direction, two adjacent cylindrical battery cells in one row of cylindrical battery cells are partially accommodated in the second cylindrical surface accommodating groove and the third cylindrical surface accommodating groove respectively along the third direction, and one cylindrical battery cell in the other row of cylindrical battery cells is partially accommodated in the fourth cylindrical surface accommodating groove, and the third direction, the first direction and the second direction are perpendicular to each other.

[0022] The second, third, and fourth cylindrical grooves of a first insulating limit bar can position the three cylindrical battery cells in contact with the first insulating limit bar, preventing or reducing displacement of the cylindrical battery cells. The first insulating limit bar is simple to manufacture, lightweight, and easily replaces individual cylindrical battery cells after grouping. Furthermore, a first insulating limit bar that positions fewer cylindrical battery cells can reduce maintenance costs when replacing them.

[0023] In some embodiments, the at least one insulating limiting strip includes a second insulating limiting strip, and the second insulating limiting strip is provided with a fifth cylindrical surface accommodating groove, a sixth cylindrical surface accommodating groove, a seventh cylindrical surface accommodating groove, and an eighth cylindrical surface accommodating groove;

[0024] In two adjacent rows of cylindrical battery cells along the first direction, two adjacent cylindrical battery cells in one row of cylindrical battery cells are partially accommodated in the fifth cylindrical surface accommodation groove and the sixth cylindrical surface accommodation groove respectively along the third direction, and two adjacent cylindrical battery cells in the other row of cylindrical battery cells are partially accommodated in the seventh cylindrical surface accommodation groove and the eighth cylindrical surface accommodation groove respectively along the third direction, and the third direction, the first direction and the second direction are perpendicular to each other.

[0025] The fifth cylindrical surface accommodating groove, the sixth cylindrical surface accommodating groove, the seventh cylindrical surface accommodating groove and the eighth cylindrical surface accommodating groove of a second insulating limit strip can limit the four cylindrical battery cells in contact with the second insulating limit strip, thereby avoiding or reducing the displacement of the cylindrical battery cells. Optionally, in one embodiment, compared with the first insulating limit strip, the cylindrical surface (contact surface) sector angles of the fifth cylindrical surface accommodating groove, the sixth cylindrical surface accommodating groove, the seventh cylindrical surface accommodating groove and the eighth cylindrical surface accommodating groove in the second insulating limit strip are larger, the space utilization rate is the highest, the battery structure is more stable and the strength is higher. In addition, a second insulating limit strip can limit more cylindrical battery cells. When limiting the same number of cylindrical battery cells, the number of insulating limit strips used and the installation time can be reduced, thereby improving installation efficiency and reducing costs. In order to further improve installation efficiency, the second insulating limit strip can be designed to have a shape structure that spans more cylindrical battery cells.

[0026] In some embodiments, the second insulating limiting strip is provided with a ninth cylindrical surface accommodating groove and a tenth cylindrical surface accommodating groove;

[0027] In the two adjacent rows of cylindrical battery cells along the first direction, the three adjacent cylindrical battery cells in one row of cylindrical battery cells are respectively accommodated in the fifth cylindrical surface accommodating groove, the sixth cylindrical surface accommodating groove and the tenth cylindrical surface accommodating groove in a one-to-one correspondence of their parts along the third direction, and the three adjacent cylindrical battery cells in the other row of cylindrical battery cells are respectively accommodated in the ninth cylindrical surface accommodating groove, the seventh cylindrical surface accommodating groove and the eighth cylindrical surface accommodating groove in a one-to-one correspondence of their parts along the third direction.

[0028] The fifth, sixth, seventh, eighth, ninth, and tenth cylindrical accommodating grooves can position the six cylindrical battery cells in contact with the second insulating limiting strip, preventing or reducing displacement of the cylindrical battery cells. Furthermore, a single second insulating limiting strip can position a greater number of cylindrical battery cells. When positioning the same number of cylindrical battery cells, the number of insulating limiting strips used can be reduced, along with installation time, improving installation efficiency and reducing costs.

[0029] In some embodiments, the fifth cylindrical surface accommodating groove, the sixth cylindrical surface accommodating groove, and the tenth cylindrical surface accommodating groove are arranged sequentially along the third direction, and the sector angles of the sixth cylindrical surface accommodating groove, the fifth cylindrical surface accommodating groove, and the tenth cylindrical surface accommodating groove decrease sequentially;

[0030] The ninth cylindrical surface accommodating groove, the seventh cylindrical surface accommodating groove and the eighth cylindrical surface accommodating groove are arranged in sequence along the third direction, and the sector angles of the seventh cylindrical surface accommodating groove, the eighth cylindrical surface accommodating groove and the ninth cylindrical surface accommodating groove decrease in sequence.

[0031] In two adjacent second insulating limit strips in the same row, the tenth cylindrical surface accommodating groove of one second insulating limit strip and the fifth cylindrical surface accommodating groove of the other second insulating limit strip can jointly limit the same cylindrical battery cell below. In two adjacent second insulating limit strips in the same row, the ninth cylindrical surface accommodating groove of one second insulating limit strip and the eighth cylindrical surface accommodating groove of the other second insulating limit strip can jointly limit the same cylindrical battery cell above, achieving a good limiting effect.

[0032] In some embodiments, the battery includes a baffle, which is fixedly connected to a side of the frame where the opening is provided and covers the opening, and the baffle limits the position of the cylindrical battery cell in contact with the baffle.

[0033] The baffle can limit and fix the cylindrical battery cell closest to the opening, thereby enabling all cylindrical battery cells in the accommodating cavity to be more effectively limited.

[0034] In some embodiments, a plurality of eleventh cylindrical surface accommodating grooves are provided on the side of the baffle facing the accommodating cavity, and the plurality of eleventh cylindrical surface accommodating grooves are arranged at intervals along a third direction. A plurality of cylindrical battery cells in a row of cylindrical battery cells in contact with the baffle are respectively accommodated in the plurality of eleventh cylindrical surface accommodating grooves in a one-to-one correspondence with their parts, and the third direction and the first direction are perpendicular to each other.

[0035] The eleventh cylindrical surface accommodating groove can limit the cylindrical battery cell in contact with the baffle, thereby avoiding or reducing the displacement of the cylindrical battery cell.

[0036] In some embodiments, the sector angle of the cylindrical accommodating groove is less than or equal to 180 degrees.

[0037] The sector angle of the cylindrical accommodating groove is less than or equal to 180 degrees, and the notch angle of the cylindrical accommodating groove is large, which can make it easier for the cylindrical battery cell to enter the cylindrical accommodating groove, thereby improving the installation efficiency.

[0038] In some embodiments, the sector angle of the cylindrical accommodating groove is greater than 45 degrees.

[0039] The sector angle of the cylindrical accommodating groove is greater than 45 degrees and less than or equal to 180 degrees. The notch angle of the cylindrical accommodating groove is moderate, which can improve the installation efficiency and limiting effect of the cylindrical battery cell while ensuring the mechanical strength of the frame and the insulating limit strip.

[0040] In some embodiments, a plurality of first cylindrical limiting portions and a plurality of second cylindrical limiting portions are provided on at least one side wall of the accommodating cavity along the third direction, the first cylindrical limiting portions and the second cylindrical limiting portions are alternately arranged along the first direction, and the third direction, the first direction, and the second direction are perpendicular to each other;

[0041] The first cylindrical surface limiting portion limits the insulating limiting strip in contact with the first cylindrical surface limiting portion along the third direction, and the second cylindrical surface limiting portion limits the cylindrical battery cell in contact with the second cylindrical surface limiting portion along the third direction.

[0042] The insulating limit strip in contact with the first cylindrical limit strip is limited by the first cylindrical limit strip, and the cylindrical battery cell in contact with the second cylindrical limit strip is limited by the second cylindrical limit strip. Combined with the gravity of the insulating limit strip and the cylindrical battery cell itself and the gravity of the insulating limit strip and the cylindrical battery cell above, the cylindrical battery cell and the insulating limit strip can be automatically made more tightly matched, and the installation is simple.

[0043] In some embodiments, the distance between the lowermost end of the first cylindrical surface limit portion and the center of the cylindrical battery cell below is L, where L>R+d, R is the radius of the cylindrical battery cell, and d is the safety margin. Along the first direction, the transition boundary below the first cylindrical surface limit portion is located outside a first virtual circle, and the first virtual circle is defined as: a virtual circle that is tangent to the tangent line of the cylindrical vertex of the second cylindrical surface limit portion located below the first cylindrical surface limit portion along the first direction, passes through the lowermost end of the first cylindrical surface limit portion, and has a radius equal to the radius of the cylindrical battery cell.

[0044] If the sector angle of the first cylindrical surface limiter is too large, it may cause difficulty in installing the cylindrical battery cell below. When the sector angle of the first cylindrical surface limiter increases significantly along the second virtual circle, placing the cylindrical battery cell first will make it impossible to conveniently place the other cylindrical battery cell. In order to ensure that the placement of cylindrical battery cells in the same row is not affected by the placement order and to maximize the convenience of installation, first, the distance L between the bottom end of the first cylindrical surface limiter and the center of the cylindrical battery cell below satisfies L>R+d. Second: Along the first direction, the transition boundary below the first cylindrical surface limiter is outside the first virtual circle.

[0045] In some embodiments, d>R×1 / 3.

[0046] Under the condition of meeting the mechanical strength of the first cylindrical surface limiting portion, the placement of cylindrical battery cells in the same row can be made less affected by the placement order, thereby maximizing the convenience of installation.

[0047] In some embodiments, the battery includes an opening, and the opening passes through at least one side surface of the insulating limiting strip along the second direction.

[0048] The openings help reduce the weight of the insulating limit strip, thereby saving material and increasing the energy density of the battery. The material that falls due to the openings can be reused, which also reduces the cost of the insulating limit strip.

[0049] In some embodiments, the battery includes a thermally conductive member located at least partially within the opening.

[0050] When the cylindrical battery cell generates heat, the heat of the cylindrical battery cell can be transferred to the heat conductive member through the insulating limit strip. The heat is then transferred to the two ends of the heat conductive member in the middle of the heat conductive member for dissipation, effectively dissipating the heat of the cylindrical battery cell.

[0051] In some embodiments, the battery includes a structural reinforcement member, the structural reinforcement member is at least partially located in the opening, and the rigidity of the structural reinforcement member is greater than the rigidity of the insulating limiting strip.

[0052] The insulating limit strip has low rigidity and is easily crushed by cylindrical battery cells. The structural reinforcement has high rigidity, which can increase the rigidity of the insulating limit strip and extend its service life.

[0053] In a second aspect, the present application provides a method for grouping battery cells, the method comprising:

[0054] Providing a frame, wherein a receiving cavity is provided in the frame, and an opening communicating with the receiving cavity is provided on one side of the frame;

[0055] A plurality of cylindrical battery cells are loaded into the accommodating cavity from the opening, and at least one insulating limit bar is loaded into the accommodating cavity from the opening, so that the plurality of cylindrical battery cells are arranged at intervals, and two adjacent cylindrical battery cells are separated and limited by at least one insulating limit bar.

[0056] In the above-mentioned grouping method, the position accuracy requirements for the cylindrical battery cells and insulating limit strips are low during the placement process. After placement, they will automatically correct to the most stable position under the action of gravity. They are adaptive and the arrangement has self-stability. The positions of the cylindrical battery cells and insulating limit strips are reliable. As the number of cylindrical battery cells and insulating limit strips increases, the fit between the cylindrical battery cells and the insulating limit strips automatically becomes tighter and tighter, making installation simple and efficient.

[0057] In some embodiments, the group method comprises:

[0058] A baffle is connected to the upper side of the frame and covers the opening, so that the baffle limits the position of the cylindrical battery cells in contact with the baffle.

[0059] The baffle can limit and fix the cylindrical battery cell closest to the opening, thereby enabling all cylindrical battery cells in the accommodating cavity to be more effectively limited.

[0060] In a third aspect, the present application provides an electrical device, which includes a battery according to any one of the above embodiments, and the battery is used to provide electrical energy.

[0061] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0063] FIG1 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

[0064] FIG2 is a schematic diagram of the exploded structure of a battery according to some embodiments of the present application;

[0065] FIG3 is an enlarged schematic diagram of the battery P portion of FIG2 ;

[0066] FIG4 is an enlarged schematic diagram of the battery Q portion of FIG2 ;

[0067] FIG5 is a schematic diagram of a partial structure of a battery according to some embodiments of the present application;

[0068] FIG6 is a schematic diagram of a partially exploded structure of a battery according to some embodiments of the present application;

[0069] FIG7 is a schematic diagram of another portion of the structure of a battery according to some embodiments of the present application;

[0070] FIG8 is another partially exploded schematic diagram of a battery according to some embodiments of the present application;

[0071] FIG9 is a schematic diagram of another portion of the structure of a battery according to some embodiments of the present application;

[0072] FIG10 is a partially enlarged schematic diagram of a battery according to some embodiments of the present application;

[0073] FIG11 is another partially enlarged schematic diagram of a battery according to some embodiments of the present application;

[0074] 12 to 14 are schematic structural diagrams of the first insulating limiting strip in some embodiments of the present application;

[0075] FIG15 is a schematic structural diagram of a second insulating limit strip in some embodiments of the present application.

[0076] The accompanying drawings in the specific implementation manner are as follows:

[0077] Vehicles 1000;

[0078] Battery 100, controller 200, motor 300;

[0079] Frame 10, accommodating cavity 101, frame 102, opening 103, first cylindrical accommodating groove 104, first cylindrical limiting portion 105, second cylindrical limiting portion 106, first side wall 107, second side wall 108;

[0080] Cylindrical battery cell 20,

[0081] First cover plate assembly 11, first insulating plate 111, busbar 112, second insulating plate 113, cooling plate 114, first through hole 115, second through hole 116, third through hole 117, fourth through hole 118, fifth through hole 119;

[0082] A second cover plate assembly 12;

[0083] Insulating limiting strip 13, first insulating limiting strip 131, second cylindrical surface accommodating groove 132, third cylindrical surface accommodating groove 133, fourth cylindrical surface accommodating groove 134, second insulating limiting strip 135, fifth cylindrical surface accommodating groove 136, sixth cylindrical surface accommodating groove 137, seventh cylindrical surface accommodating groove 138, eighth cylindrical surface accommodating groove 139, ninth cylindrical surface accommodating groove 140, tenth cylindrical surface accommodating groove 141;

[0084] Baffle 14, eleventh cylindrical surface receiving groove 142;

[0085] Opening 15;

[0086] heat conducting member 16;

[0087] Structural reinforcement 17. DETAILED DESCRIPTION

[0088] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0089] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0090] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0091] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0092] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0093] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0094] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0095] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0096] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0097] In related technologies, battery cells are mostly grouped by inserting them into a frame. The insertion process places high demands on the positioning process and positioning accuracy, places high demands on equipment, and requires a large amount of glue to improve strength and rigidity. However, the glue is expensive and takes a long time to cure. After the glue is filled, the battery cells are difficult to replace.

[0098] Based on the above considerations, in order to solve the problems of high position accuracy requirements and long grouping time during the battery cell grouping process, the present application provides a battery, which includes a frame, a plurality of cylindrical battery cells and at least one insulating limit bar. A accommodating cavity is provided in the frame, and an opening communicating with the accommodating cavity is provided on one side of the frame along a first direction. The plurality of cylindrical battery cells are accommodated in the accommodating cavity. The insulating limit bar is accommodated in the accommodating cavity, and two adjacent cylindrical battery cells are separated and limited by at least one insulating limit bar.

[0099] In such a battery, when the cylindrical battery cells are grouped, the openings can be placed upward in the vertical direction, and multiple cylindrical battery cells and insulating limit strips can be loaded into the accommodating cavity from top to bottom from the openings. During the grouping process of the cylindrical battery cells, the position accuracy requirements for the placement of the cylindrical battery cells and the insulating limit strips are low. After placement, they will automatically correct to the most stable position under the action of gravity. They are adaptive and the arrangement has self-stability. The positions of the cylindrical battery cells and the insulating limit strips are reliable. Moreover, as the number of cylindrical battery cells and insulating limit strips increases, the fit between the cylindrical battery cells and the insulating limit strips automatically becomes tighter and tighter. The installation is simple and time-saving, and the cylindrical battery cells can be limited by the insulating limit strips and the frame.

[0100] The battery disclosed in the embodiments of the present application can be applied to electrical devices used as power sources or various energy storage systems using batteries as energy storage elements. The electrical devices may be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, battery-powered vehicles, electric vehicles, ships, spacecraft, and the like. Among them, electric toys may include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like, and spacecraft may include airplanes, rockets, space shuttles, and spacecraft, and the like.

[0101] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0102] Please refer to Figure 1, which is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 can be provided at the bottom, head or tail of the vehicle 1000. The battery 100 can be used to power the vehicle 1000. For example, the battery 100 can serve as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0103] In some embodiments of the present application, the battery 100 can serve not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0104] Please refer to Figure 2, which is an exploded view of a battery 100 provided in some embodiments of the present application. The battery 100 includes a frame 10, a first cover assembly 11, a second cover assembly 12, and a cylindrical battery cell 20. The frame 10 is provided with a housing 101. The first cover assembly 11 and the second cover assembly 12 are respectively connected to the two ends of the frame 10 along the C1-C2 direction, so that the housing 101 forms a relatively closed state, and the cylindrical battery cell 20 is accommodated in the housing 101. The overall structure formed by the connection of the frame 10, the first cover assembly 11, and the second cover assembly 12 can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0105] In the battery 100, there can be multiple cylindrical battery cells 20, and the multiple cylindrical battery cells 20 can be connected in series, in parallel, or in a mixed connection. Mixed connection means that the multiple cylindrical battery cells 20 are both connected in series and in parallel. The multiple cylindrical battery cells 20 can be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple cylindrical battery cells 20 is accommodated in the accommodating cavity; of course, the battery 100 can also be a battery module formed by first connecting multiple cylindrical battery cells 20 in series, in parallel, or in a mixed connection, and the multiple battery modules are then connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the accommodating cavity. The battery 100 may also include other structures. For example, the battery 100 may also include a busbar component for achieving electrical connection between the multiple cylindrical battery cells 20.

[0106] Each cylindrical battery cell 20 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited thereto.

[0107] According to some embodiments of the present application, please refer to Figures 3 to 8. The embodiments of the present application provide a battery 100, which includes a frame 102, a plurality of cylindrical battery cells 20, and at least one insulating limit bar 13. A receiving cavity 101 is provided in the frame 102, and an opening 103 communicating with the receiving cavity 101 is provided on one side of the frame 102 along the first direction. A plurality of cylindrical battery cells 20 are received in the receiving cavity 101. The insulating limit bar 13 is received in the receiving cavity 101, and two adjacent cylindrical battery cells 20 are separated and limited by at least one insulating limit bar 13.

[0108] Alternatively, in Figures 5 to 9, the battery 100 includes multiple rows of cylindrical battery cells 20. The multiple rows of cylindrical battery cells 20 may be spaced apart along a first direction, with each row of cylindrical battery cells 20 including multiple cylindrical battery cells 20. The multiple cylindrical battery cells 20 are spaced apart along a third direction. The first direction includes the A1-A2 direction, the second direction includes the C1-C2 direction, and the third direction includes the B1-B2 direction. It will be understood that in other embodiments, the number of cylindrical battery cells 20 in each row of cylindrical battery cells 20 may be one.

[0109] 5 to 8 , optionally, during the battery cell grouping process, the opening 103 of the frame 102 may be vertically arranged upward, that is, the opening 103 may be arranged toward direction A1, and then the cylindrical battery cell 20 and the insulating limit strip 13 may be loaded through the opening 103 . When the cylindrical battery cell 20 and the insulating limit strip 13 are loaded, the cylindrical battery cell 20 is loaded into the accommodating cavity 101 from the opening 103 in a posture in which the length direction of the cylindrical battery cell 20 is not parallel to the direction of gravity (such as the A2 direction in the figure), and the insulating limit strip 13 is loaded into the accommodating cavity 101 from the opening 103 in a posture in which the length direction of the insulating limit strip 13 is not parallel to the direction of gravity. In this way, when the cylindrical battery cell 20 contacts the bottom surface of the accommodating cavity 101 or the lower cylindrical battery cell 20, it can be automatically corrected under the action of gravity so that the length direction of the cylindrical battery cell 20 is along the second direction, and when the insulating limit strip 13 contacts the cylindrical battery cell 20, it can be automatically corrected under the action of gravity so that the length direction of the insulating limit strip 13 is along the second direction.

[0110] This application does not specifically limit the number of cylindrical battery cells 20 and insulating limit bars 13. Optionally, in one embodiment, the battery 100 includes N rows of cylindrical battery cells 20 spaced apart along the first direction, where N is a natural number greater than or equal to 1, and the number of cylindrical battery cells 20 in each row of cylindrical battery cells 20 is M, where M is a natural number greater than or equal to 1, where M and N are not both equal to 1, i.e., the battery may include N×M cylindrical battery cells 20. In another embodiment, the number of cylindrical battery cells 20 in each row of cylindrical battery cells 20 may be different.

[0111] On the one hand, the insulating limit strips 13 can separate the cylindrical battery cells 20 to achieve electrical isolation between adjacent cylindrical battery cells 20, preventing the cylindrical surfaces of adjacent cylindrical battery cells 20 in the same row or different rows from contacting each other and causing short circuits. On the other hand, the insulating limit strips 13 can also limit the position of the cylindrical battery cells 20 to prevent displacement of the cylindrical battery cells 20. Optionally, the insulating limit strips 13 can be made of plastic.

[0112] The frame 102 can limit and fix the cylindrical battery cells 20 located in the accommodating cavity 101. Specifically, during the grouping process, under the action of gravity, the cylindrical battery cells 20 placed later in the accommodating cavity 101 can be pressed against the cylindrical battery cells 20 placed earlier in the accommodating cavity 101 by the insulating limiting strips 13, so that the fit between the cylindrical battery cells 20 and the insulating limiting strips 13 automatically becomes increasingly tighter. The cylindrical battery cells 20 that are in contact with the side walls of the accommodating cavity 101 are limited in position by the frame 102.

[0113] This application does not specifically limit the material of the frame 102. Alternatively, if the structural strength requirements for the battery 100 are relatively low, the frame 102 may be made of plastic. If the structural strength requirements for the battery 100 are relatively high, the frame 102 may be made of metal (e.g., iron, stainless steel, etc.). When the frame 102 is made of metal, insulation treatment is applied to the frame 102, for example, by applying an insulating varnish or insulating film, to electrically isolate the frame 102 from the cylindrical battery cells 20, etc.

[0114] According to some embodiments of the present application, the battery 100 optionally includes a baffle 14 , which is fixed to a side of the frame 102 with an opening 103 and covers the opening 103 . The baffle 14 limits the position of the cylindrical battery cell 20 in contact with the baffle 14 .

[0115] Specifically, the frame 102 and the baffle 14 can be connected to form a frame body, which can limit and fix the cylindrical battery cells 20 located in the accommodating cavity 101, especially the cylindrical battery cells 20 in contact with the baffle 14. More specifically, the baffle 14 can be fixedly connected to the frame 102 and limit the position of the row of cylindrical battery cells 20 in contact with the baffle 14. During the grouping process, under the action of gravity, the cylindrical battery cells 20 placed later in the accommodating cavity 101 can be pressed against the cylindrical battery cells 20 placed earlier in the accommodating cavity 101 by the insulating limiting strips 13, so that the fit between the cylindrical battery cells 20 and the insulating limiting strips 13 automatically becomes increasingly tighter. The cylindrical battery cells 20 in contact with the sidewalls of the accommodating cavity 101 are then limited in position by the frame 102. After the last row of cylindrical battery cells 20 is installed, the baffle 14 is placed on the frame 102 and mechanically pre-fixed or fixed, so that the baffle 14 limits and fixes the last row of cylindrical battery cells 20. Optionally, the baffle 14 and the frame 102 may be fixedly connected by bolts, welding, etc., which is not specifically limited in this application.

[0116] The present application does not impose any specific restrictions on the material of the baffle 14. Optionally, if the structural strength requirements of the battery 100 are relatively low, the baffle 14 may be made of plastic. If the structural strength requirements of the battery 100 are relatively high, the baffle 14 may be made of metal (such as iron, stainless steel, etc.). When the baffle 14 is made of metal, the baffle 14 is insulated, for example, by applying insulating paint or an insulating film on the baffle 14 to electrically isolate the baffle 14 from the cylindrical battery cells 20, etc. The material of the baffle 14 and the frame 102 may be the same or different, and the present application does not impose any specific restrictions on this.

[0117] The baffle 14 can limit and fix the cylindrical battery cells 20 closest to the opening 103 , thereby enabling all cylindrical battery cells 20 in the accommodating cavity to be more effectively limited.

[0118] In addition, the battery 100 includes a first cover plate assembly 11 and a second cover plate assembly 12. The first cover plate assembly 11 and the second cover plate assembly 12 are respectively connected to the two ends of the frame along the second direction (such as the C1-C2 direction in Figure 2), so that the accommodating cavity 101 is formed in a relatively closed state, and the cylindrical battery cell 20 is accommodated in the accommodating cavity 101. The frame, the first cover plate assembly 11 and the second cover plate assembly 12 are connected to form a whole, which can protect the cylindrical battery cell 20.

[0119] In Figure 2, the first cover assembly 11 is connected to one end of the frame 102 along the C1 direction, and the second cover assembly 12 is connected to one end of the frame 102 along the C2 direction. Optionally, in some embodiments of the present application, the structures of the first cover assembly 11 and the second cover assembly 12 are the same.

[0120] The following is a detailed description taking the first cover plate assembly 11 as an example.

[0121] The first cover plate assembly 11 includes a first insulating plate 111, a busbar 112, a second insulating plate 113 and a cooling plate 114. The first insulating plate 111, the busbar 112, the second insulating plate 113 and the cooling plate 114 are arranged in sequence in a direction away from the cylindrical battery cell 20. The first insulating plate 111 can support and fix the busbar 112. The first insulating plate 111 is provided with a plurality of first through holes 115 along the thickness direction. The first through holes 115 can be used to weld one electrode of the cylindrical battery cell 20 to the busbar 112, and to exhaust when the cylindrical battery cell 20 has thermal runaway. Optionally, the first insulating plate 111 is also provided with a plurality of second through holes 116 along the thickness direction. The second through holes 116 can be provided for the heat conducting member 16 (described later) on the insulating limit strip 13 to pass through. If there is no heat conducting member 16 on the insulating limit strip 13, the first insulating member may not be provided with the second through hole 116.

[0122] The busbar 112 is provided with a plurality of third through holes 117 along the thickness direction. The third through holes 117 can be connected to the first through holes 115. The third through holes 117 can be used to weld one electrode of the cylindrical battery cell 20 to the busbar 112 and to exhaust gas when thermal runaway occurs in the cylindrical battery cell 20. Optionally, the busbar 112 is provided with a plurality of fifth through holes 119 along the thickness direction. The fifth through holes 119 are connected to the second through holes 116. The fifth through holes 119 can be provided with the heat conducting member 16 (described later) on the insulating limit bar 13. If there is no heat conducting member 16 on the insulating limit bar 13, the busbar 112 does not need to be provided with the fifth through holes 119.

[0123] The second insulating plate 113 is provided with a plurality of fourth through holes 118 along the thickness direction. The fourth through holes 118 can be used to exhaust when thermal runaway occurs in the cylindrical battery cell 20. The cooling plate 114 can dissipate the heat inside the battery 100 to the outside of the battery 100. Optionally, when a heat conductor 16 is provided on the insulating limit strip 13, the heat in the middle of the cylindrical battery cell 20 can be transferred to the two ends of the heat conductor 16 through the insulating limit strip 13. The two ends of the heat conductor 16 transfer the heat to the cooling plate 114. The cooling plate 114 dissipates the heat to the outside of the battery 100, thereby dissipating the heat of the cylindrical battery cell 20. It can be understood that when the heat conductor 16 is not provided on the insulating limit strip 13, the heat of the cylindrical battery cell 20 can also be transferred to the cooling plate 114. Optionally, the cooling plate 114 can be a liquid cooling plate.

[0124] Optionally, the second insulating plate 113 is provided with a sixth through-hole along its thickness. The sixth through-hole allows the heat conductor 16 to pass through, placing the heat conductor 16 closer to the cooling plate 114 and improving the heat dissipation efficiency of the cylindrical battery cell 20. The heat conductor 16 may or may not contact the cooling plate 114, and this is not specifically limited in this application.

[0125] The busbar 112 of the second cap plate assembly 12 is welded to the other electrode of the cylindrical battery cell 20 .

[0126] When the cylindrical battery cells 20 are grouped, the openings 103 can be arranged vertically upward. For example, in FIG6 , the openings 103 are arranged along direction A1, and the direction of gravity is along direction A2. Multiple cylindrical battery cells 20 and multiple insulating limit bars 13 can be loaded into the accommodating cavity 101 from top to bottom through the openings 103. During the grouping process of the cylindrical battery cells 20, the positioning accuracy requirements for the cylindrical battery cells 20 and the insulating limit bars 13 are low. After placement, they will automatically adjust to the most stable position under the action of gravity, showing adaptability and self-stability. The cylindrical battery cells 20 and the insulating limit bars 13 are reliably positioned. Moreover, as the number of cylindrical battery cells 20 and the insulating limit bars 13 increases, the fit between the cylindrical battery cells 20 and the insulating limit bars 13 automatically becomes tighter, making installation simple and time-saving. Furthermore, the cylindrical battery cells 20 can be separated and limited by the frame 102 and the insulating limit bars 13.

[0127] Optionally, in the battery 100 of the present application, a small portion of the cylindrical battery cells 20 may be allowed to be pseudo-cylindrical battery cells 20 or other structural components having the structure of a cylindrical battery cell 20 and used for auxiliary functions, which is not specifically limited in the present application.

[0128] Optionally, to improve installation efficiency, the dimensions (including height and radius) of all cylindrical battery cells 20 are the same.

[0129] According to some embodiments of the present application, optionally, the length direction of the cylindrical battery cell 20 is along the second direction, the length direction of the insulating limiting strip 13 is along the second direction, and the second direction and the first direction are perpendicular to each other.

[0130] In Figure 2 , the length of the insulating limit strip 13 is along the C1-C2 direction, and the length of the cylindrical battery cell 20 is along the C1-C2 direction. Therefore, the length of the insulating limit strip 13 is parallel to the length of the cylindrical battery cell 20, which can increase the contact area between the insulating limit strip 13 and the cylindrical battery cell 20 in the length direction, thereby improving the insulating limit strip 13's ability to limit the cylindrical battery cell 20.

[0131] According to some embodiments of the present application, optionally, the battery 100 includes a plurality of rows of cylindrical battery cells 20 arranged at intervals along a first direction, the length direction of the cylindrical battery cells 20 is along a second direction, two adjacent rows of cylindrical battery cells 20 along the first direction are separated and limited by at least one insulating limit bar 13, and / or, two adjacent cylindrical battery cells 20 in the same row of cylindrical battery cells 20 are separated and limited by at least one insulating limit bar 136, and the second direction and the first direction are perpendicular to each other.

[0132] In Figure 5 , the first direction is the A1-A2 direction, and multiple rows of cylindrical battery cells 20 are spaced apart along the A1-A2 direction. Each row of cylindrical battery cells 20 may include at least one cylindrical battery cell 20. When each row of cylindrical battery cells 20 includes multiple cylindrical battery cells 20, the multiple cylindrical battery cells 20 may be spaced apart along the third direction (the B1-B2 direction). Two adjacent rows of cylindrical battery cells 20 along the first direction are separated and limited by at least one insulating limit strip 13, and two adjacent cylindrical battery cells 20 in the same row of cylindrical battery cells 20 are separated and limited by at least one insulating limit strip 13.

[0133] On the one hand, the insulating limit bars 13 can separate the cylindrical battery cells 20 to achieve electrical isolation between adjacent cylindrical battery cells 20, preventing the cylindrical surfaces of adjacent cylindrical battery cells 20 in the same row or different rows from contacting each other and causing short circuits. On the other hand, the insulating limit bars 13 can also limit the position of the cylindrical battery cells 20 to prevent displacement of the cylindrical battery cells 20. The battery 100 includes multiple rows of cylindrical battery cells 20 spaced apart along the first direction, which can make the arrangement of the cylindrical battery cells 20 more regular, allowing for the placement of a larger number of cylindrical battery cells 20, thereby improving the energy density of the battery 100.

[0134] It can be understood that in other embodiments, two adjacent rows of cylindrical battery cells 20 along the first direction are separated and limited by at least one insulating limit bar 13, or two adjacent cylindrical battery cells 20 in the same row of cylindrical battery cells 20 are separated and limited by at least one insulating limit bar 13.

[0135] According to some embodiments of the present application, optionally, at least one insulating limit bar 13 includes multiple insulating limit bars 13, and the multiple insulating limit bars 13 are arranged in a row along the third direction. Two adjacent rows of cylindrical battery cells 20 along the first direction are limited by a row of insulating limit bars 13, and the third direction, the first direction and the second direction are perpendicular to each other.

[0136] In Figures 5 to 8, each row of insulating limit bars 13 includes multiple insulating limit bars 13. The first direction includes the A1-A2 direction, and the third direction includes the B1-B2 direction. The number of rows of insulating limit bars 13 in the figure is 4 rows, and the number of insulating limit bars 13 in each row of insulating limit bars 13 can be the same or different. The number of rows of cylindrical battery cells 20 is 5 rows, and the number of cylindrical battery cells 20 in each row of cylindrical battery cells 20 can be the same or different. In one embodiment, the number of insulating limit bars 13 in each row of insulating limit bars 13 can be 1.

[0137] It is understandable that the present application does not impose any specific limitation on the number of rows and quantity of the insulating limit strips 13 , nor does it impose any specific limitation on the number of rows and quantity of the cylindrical battery cells 20 .

[0138] Along the first direction, two adjacent rows of cylindrical battery cells 20 are limited by a row of insulating limiting strips 13 , so that the two adjacent rows of cylindrical battery cells 20 fit tightly and are not easily displaced.

[0139] According to some embodiments of the present application, optionally, a plurality of first cylindrical accommodating grooves 104 are provided on the bottom surface of the accommodating cavity 101, and the plurality of first cylindrical accommodating grooves 104 are arranged at intervals along the third direction, and the length direction of the first cylindrical accommodating grooves 104 is along the second direction. The plurality of cylindrical battery cells 20 in a row of cylindrical battery cells 20 closest to the bottom surface of the accommodating cavity 101 are respectively accommodated in the plurality of first cylindrical accommodating grooves 104 in a one-to-one correspondence manner with their parts, and the third direction, the first direction and the second direction are perpendicular to each other.

[0140] In Figure 10, the structure of the first cylindrical surface accommodating groove 104 is described as follows: the first cylindrical surface accommodating groove 104 has a cylindrical surface, and the cylindrical surface is the side surface of the cylinder. When a portion of the cylindrical battery cell 20 is accommodated in the first cylindrical surface accommodating groove 104, the cylindrical surface of the cylindrical battery cell 20 contacts the cylindrical surface (contact surface) of the first cylindrical surface accommodating groove 104. Optionally, the radius of the cylindrical battery cell 20 is the same as the radius of the cylinder corresponding to the cylindrical surface of the first cylindrical surface accommodating groove 104. The first insulating limit strip 131 can be in tangential contact with the cylindrical surfaces of multiple cylindrical battery cells 20 in two adjacent rows simultaneously along the first direction.

[0141] The first cylindrical accommodating groove 104 is used to accommodate the first row of cylindrical battery cells 20 , and can limit the first row of cylindrical battery cells 20 on the bottom surface of the accommodating cavity 101 , thereby preventing or reducing displacement of the cylindrical battery cells 20 .

[0142] According to some embodiments of the present application, optionally, at least one insulating limit bar 13 includes a first insulating limit bar 131, and the first insulating limit bar 131 is provided with a second cylindrical surface accommodating groove 132, a third cylindrical surface accommodating groove 133, and a fourth cylindrical surface accommodating groove 134. In two adjacent rows of cylindrical battery cells 20 along a first direction, two adjacent cylindrical battery cells 20 in one row of cylindrical battery cells 20 are partially accommodated in the second cylindrical surface accommodating groove 132 and the third cylindrical surface accommodating groove 133, respectively, along a third direction, and one cylindrical battery cell 20 in the other row of cylindrical battery cells 20 is partially accommodated in the fourth cylindrical surface accommodating groove 134, and the third direction, the first direction, and the second direction are mutually perpendicular.

[0143] Please refer to Figures 5 and 6. All insulating limit strips 13 are first insulating limit strips 131. Optionally, please refer to Figure 12. The shapes of the second cylindrical surface accommodating groove 132, the third cylindrical surface accommodating groove 133 and the fourth cylindrical surface accommodating groove 134 are the same. Therefore, the manufacturing process is simple and efficient.

[0144] A first insulating limit strip 131 can limit three cylindrical battery cells 20 respectively: two cylindrical battery cells 20 are two adjacent cylindrical battery cells 20 in the same row of cylindrical battery cells 20, and the other cylindrical battery cell 20 is a cylindrical battery cell 20 in another row of cylindrical battery cells 20 adjacent to the row of cylindrical battery cells 20 along the first direction.

[0145] The structures of the second cylindrical accommodating groove 132, the third cylindrical accommodating groove 133, and the fourth cylindrical accommodating groove 134 can be described with reference to the structure of the first cylindrical accommodating groove 104, and will not be elaborated on in detail here. Optionally, the radii of the cylinders corresponding to the second cylindrical accommodating groove 132, the third cylindrical accommodating groove 133, and the fourth cylindrical accommodating groove 134 are the same and equal to the radius of the cylindrical battery cell 20.

[0146] The second cylindrical accommodating groove 132, the third cylindrical accommodating groove 133, and the fourth cylindrical accommodating groove 134 of a first insulating limiting strip 131 can limit the position of the three cylindrical battery cells 20 in contact with the first insulating limiting strip 131, thereby preventing or reducing displacement of the cylindrical battery cells 20. The first insulating limiting strip 131 is simple to manufacture, the battery is lightweight, and individual cylindrical battery cells 20 can be easily replaced after grouping. In addition, the first insulating limiting strip 131 that limits the position of a small number of cylindrical battery cells 20 can reduce maintenance costs when replacing them.

[0147] It is understandable that in other embodiments, the structure of the insulating limit strip 13 may be other structures, and is not limited to the structure of the first insulating limit strip 131 , and is not specifically limited here.

[0148] According to some embodiments of the present application, optionally, at least one insulating limiting strip 13 includes a second insulating limiting strip 135 , and the second insulating limiting strip 135 is provided with a fifth cylindrical surface accommodating groove 136 , a sixth cylindrical surface accommodating groove 137 , a seventh cylindrical surface accommodating groove 138 and an eighth cylindrical surface accommodating groove 139 ;

[0149] In two adjacent rows of cylindrical battery cells 20 along the first direction, two adjacent cylindrical battery cells 20 in one row of cylindrical battery cells 20 are partially accommodated in the fifth cylindrical surface accommodating groove 136 and the sixth cylindrical surface accommodating groove 137 respectively along the third direction, and two adjacent cylindrical battery cells 20 in the other row of cylindrical battery cells 20 are partially accommodated in the seventh cylindrical surface accommodating groove 138 and the eighth cylindrical surface accommodating groove 139 respectively along the third direction. The third direction, the first direction and the second direction are perpendicular to each other.

[0150] Please refer to Figures 7 and 8. All insulating limit strips 13 are second insulating limit strips 135. Optionally, please refer to Figure 15. The shapes of the fifth cylindrical surface accommodating groove 136 and the eighth cylindrical surface accommodating groove 139 are the same, and the shapes of the sixth cylindrical surface accommodating groove 137 and the seventh cylindrical surface accommodating groove 138 are the same. Therefore, the manufacturing process is simple and efficient.

[0151] A second insulating limit strip 135 can limit four cylindrical battery cells 20 respectively: two of the cylindrical battery cells 20 are adjacent cylindrical battery cells 20 in the same row of cylindrical battery cells 20, and the other two cylindrical battery cells 20 are adjacent cylindrical battery cells 20 in another row of cylindrical battery cells 20 adjacent to the row of cylindrical battery cells 20 along the first direction.

[0152] The structural description of the fifth cylindrical surface accommodating groove 136, the sixth cylindrical surface accommodating groove 137, the seventh cylindrical surface accommodating groove 138, and the eighth cylindrical surface accommodating groove 139 can refer to the structural description of the first cylindrical surface accommodating groove 104 described above and will not be elaborated on in detail here. Optionally, the radius of the cylinder corresponding to the fifth cylindrical surface accommodating groove 136, the sixth cylindrical surface accommodating groove 137, the seventh cylindrical surface accommodating groove 138, and the eighth cylindrical surface accommodating groove 139 is the same and equal to the radius of the cylindrical battery cell 20. The second insulating limit strip 135 can simultaneously make tangential contact with the cylindrical surfaces of two adjacent rows of cylindrical battery cells 20 along the first direction.

[0153] The fifth cylindrical surface accommodating groove 136, the sixth cylindrical surface accommodating groove 137, the seventh cylindrical surface accommodating groove 138, and the eighth cylindrical surface accommodating groove 139 of a second insulating limiting strip 135 can limit the four cylindrical battery cells 20 in contact with the second insulating limiting strip 135, thereby preventing or reducing displacement of the cylindrical battery cells 20. Optionally, in one embodiment, compared to the first insulating limiting strip 131, the cylindrical surface (contact surface) sector angles of the fifth cylindrical surface accommodating groove 136, the sixth cylindrical surface accommodating groove 137, the seventh cylindrical surface accommodating groove 138, and the eighth cylindrical surface accommodating groove 139 of the second insulating limiting strip 135 are larger, thereby maximizing space utilization, and providing a more stable battery structure and higher strength. Furthermore, a single second insulating limit bar 135 can position a greater number of cylindrical battery cells 20. This reduces the number of insulating limit bars 13 used and installation time when positioning the same number of cylindrical battery cells 20, improving installation efficiency and reducing costs. To further improve installation efficiency, the second insulating limit bar 135 can be designed to span a greater number of cylindrical battery cells 20.

[0154] It is understood that in other embodiments, the structure of the insulating limit strip 13 can also be other structures, not limited to the structure of the second insulating limit strip 135, and is not specifically limited here. In other embodiments, the insulating limit strip 13 can include the first insulating limit strip 131 and the second insulating limit strip 135, and can also include insulating limit strips 13 with other structures, which is not specifically limited in this application.

[0155] According to some embodiments of the present application, optionally, the second insulating limiting strip 135 is provided with a ninth cylindrical surface accommodating groove 140 and a tenth cylindrical surface accommodating groove 141;

[0156] In the two adjacent rows of cylindrical battery cells 20 along the first direction, the three adjacent cylindrical battery cells 20 of one row of cylindrical battery cells 20 are respectively accommodated in the fifth cylindrical surface accommodating groove 136, the sixth cylindrical surface accommodating groove 137 and the tenth cylindrical surface accommodating groove 141 in a one-to-one correspondence of their parts along the third direction, and the three adjacent cylindrical battery cells 20 of the other row of cylindrical battery cells 20 are respectively accommodated in the ninth cylindrical surface accommodating groove 140, the seventh cylindrical surface accommodating groove 138 and the eighth cylindrical surface accommodating groove 139 in a one-to-one correspondence of their parts along the third direction.

[0157] Referring to FIG. 15 , optionally, the ninth cylindrical surface receiving groove 140 and the tenth cylindrical surface receiving groove 141 have the same shape, thereby simplifying the manufacturing process and increasing efficiency.

[0158] In this embodiment, a second insulating limit strip 135 can limit six cylindrical battery cells 20 respectively: three of the cylindrical battery cells 20 are three adjacent cylindrical battery cells 20 in the same row of cylindrical battery cells 20, and the other three cylindrical battery cells 20 are three adjacent cylindrical battery cells 20 in another row of cylindrical battery cells 20 adjacent to the row of cylindrical battery cells 20 along the first direction.

[0159] The structural description of the ninth cylindrical surface receiving groove 140 and the tenth cylindrical surface receiving groove 141 can refer to the structural description of the first cylindrical surface receiving groove 104 described above and will not be elaborated on here. Optionally, the radius of the cylinders corresponding to the fifth cylindrical surface receiving groove 136, the sixth cylindrical surface receiving groove 137, the seventh cylindrical surface receiving groove 138, the eighth cylindrical surface receiving groove 139, the ninth cylindrical surface receiving groove 140, and the tenth cylindrical surface receiving groove 141 are the same and equal to the radius of the cylindrical battery cell 20.

[0160] The fifth cylindrical accommodating groove 136, the sixth cylindrical accommodating groove 137, the seventh cylindrical accommodating groove 138, the eighth cylindrical accommodating groove 139, the ninth cylindrical accommodating groove 140, and the tenth cylindrical accommodating groove 141 can limit the six cylindrical battery cells 20 in contact with the second insulating limiting strip 135, thereby preventing or reducing displacement of the cylindrical battery cells 20. In addition, one second insulating limiting strip 135 can limit the position of more cylindrical battery cells 20. When limiting the position of the same number of cylindrical battery cells 20, the number of insulating limiting strips 13 used and the installation time can be reduced, thereby improving installation efficiency and reducing costs.

[0161] According to some embodiments of the present application, optionally, the fifth cylindrical surface accommodating groove 136, the sixth cylindrical surface accommodating groove 137 and the tenth cylindrical surface accommodating groove 141 are arranged in sequence along the third direction, and the fan angles of the sixth cylindrical surface accommodating groove 137, the fifth cylindrical surface accommodating groove 136 and the tenth cylindrical surface accommodating groove 141 decrease in sequence.

[0162] The ninth cylindrical surface receiving groove 140 , the seventh cylindrical surface receiving groove 138 and the eighth cylindrical surface receiving groove 139 are sequentially arranged along the third direction, and the sector angles of the seventh cylindrical surface receiving groove 138 , the eighth cylindrical surface receiving groove 139 and the ninth cylindrical surface receiving groove 140 decrease sequentially.

[0163] Referring to Figures 7, 8, and 15, in two adjacent second insulating limit strips 135 in the same row, the tenth cylindrical surface accommodating groove 141 of one second insulating limit strip 135 and the fifth cylindrical surface accommodating groove 136 of the other second insulating limit strip 135 can jointly limit the same cylindrical battery cell 20 below. In two adjacent second insulating limit strips 135 in the same row, the ninth cylindrical surface accommodating groove 140 of one second insulating limit strip 135 and the eighth cylindrical surface accommodating groove 139 of the other second insulating limit strip 135 can jointly limit the same cylindrical battery cell 20 above, achieving a good limiting effect.

[0164] According to some embodiments of the present application, optionally, a plurality of eleventh cylindrical surface accommodating grooves 142 are provided on the side of the baffle 14 facing the accommodating cavity 101, and the plurality of eleventh cylindrical surface accommodating grooves 142 are arranged at intervals along the third direction. The plurality of cylindrical battery cells 20 in a row of cylindrical battery cells 20 in contact with the baffle 14 are respectively accommodated in the plurality of eleventh cylindrical surface accommodating grooves 142 in a one-to-one correspondence of their parts, and the third direction and the first direction are perpendicular to each other.

[0165] In Figures 6 and 8 , the side of the baffle 14 facing the accommodating cavity 101 is the bottom surface of the baffle 14. The third direction includes the B1-B2 direction. The eleventh cylindrical accommodating groove 142 can limit the top row of cylindrical battery cells 20. The third direction, the first direction, and the second direction are perpendicular to each other.

[0166] The structural description of the eleventh cylindrical surface receiving groove 142 may refer to the structural description of the first cylindrical surface receiving groove 104 , and will not be elaborated herein.

[0167] The eleventh cylindrical accommodating groove 142 can limit the cylindrical battery cell 20 in contact with the baffle 14 , thereby preventing or reducing displacement of the cylindrical battery cell 20 .

[0168] According to some embodiments of the present application, optionally, the sector angle of the cylindrical accommodating groove is less than or equal to 180 degrees.

[0169] Specifically, the sector angle of the first cylindrical surface accommodating groove 104 is less than or equal to 180 degrees, the sector angle of the second cylindrical surface accommodating groove 132 is less than or equal to 180 degrees, the sector angle of the third cylindrical surface accommodating groove 133 is less than or equal to 180 degrees, the sector angle of the fourth cylindrical surface accommodating groove 134 is less than or equal to 180 degrees, the sector angle of the fifth cylindrical surface accommodating groove 136 is less than or equal to 180 degrees, the sector angle of the sixth cylindrical surface accommodating groove 137 is less than or equal to 180 degrees, the sector angle of the seventh cylindrical surface accommodating groove 138 is less than or equal to 180 degrees, the sector angle of the eighth cylindrical surface accommodating groove 139 is less than or equal to 180 degrees, the sector angle of the ninth cylindrical surface accommodating groove 140 is less than or equal to 180 degrees, the sector angle of the tenth cylindrical surface accommodating groove 141 is less than or equal to 180 degrees, and the sector angle of the eleventh cylindrical surface accommodating groove 142 is less than or equal to 180 degrees.

[0170] 10 , for the first cylindrical accommodating groove 104 , the sector angle of the first cylindrical accommodating groove 104 may be the angle T1 between two connecting lines formed by the two ends of the cylindrical surface along the circumference of the first cylindrical accommodating groove 104 and the center of the cylinder corresponding to the cylindrical surface.

[0171] The sector angle of the first cylindrical accommodating groove 104 is less than or equal to 180 degrees. The larger notch angle of the first cylindrical accommodating groove 104 facilitates the insertion of the cylindrical battery cell 20 into the first cylindrical accommodating groove 104, improving installation efficiency. The notch angle can be defined as the angle T2 between two tangent lines to the cylindrical surface along the circumference of the first cylindrical accommodating groove 104 at both ends. The sum of angles T1 and T2 is 180 degrees.

[0172] According to some embodiments of the present application, optionally, the sector angle of the cylindrical accommodating groove is greater than 45 degrees.

[0173] Specifically, the sector angle of the first cylindrical surface accommodating groove 104 is greater than 45 degrees and less than or equal to 180 degrees, the sector angle of the second cylindrical surface accommodating groove 132 is greater than 45 degrees and less than or equal to 180 degrees, the sector angle of the third cylindrical surface accommodating groove 133 is greater than 45 degrees and less than or equal to 180 degrees, the sector angle of the fourth cylindrical surface accommodating groove 134 is greater than 45 degrees and less than or equal to 180 degrees, the sector angle of the fifth cylindrical surface accommodating groove 136 is greater than 45 degrees and less than or equal to 180 degrees, and the sector angle of the sixth cylindrical surface accommodating groove 137 is greater than 45 degrees and less than or equal to 180 degrees. The sector angle of the seventh cylindrical surface accommodating groove 138 is greater than 45 degrees and less than or equal to 180 degrees, the sector angle of the eighth cylindrical surface accommodating groove 139 is greater than 45 degrees and less than or equal to 180 degrees, the sector angle of the ninth cylindrical surface accommodating groove 140 is greater than 45 degrees and less than or equal to 180 degrees, the sector angle of the tenth cylindrical surface accommodating groove 141 is greater than 45 degrees and less than or equal to 180 degrees, and the sector angle of the eleventh cylindrical surface accommodating groove 142 is greater than 45 degrees and less than or equal to 180 degrees.

[0174] The sector angle of the cylindrical accommodating groove is greater than 45 degrees and less than or equal to 180 degrees. The notch angle of the cylindrical accommodating groove is moderate, which can improve the installation efficiency and limiting effect of the cylindrical battery cell 20 while ensuring the mechanical strength of the frame 102 and the insulating limiting strip 13.

[0175] In some examples, the sector angle of the cylindrical accommodating groove disclosed in this application can be 180 degrees, 170 degrees, 160 degrees, 150 degrees, 140 degrees, 130 degrees, 120 degrees, 110 degrees, 100 degrees, 90 degrees, 80 degrees, 70 degrees, 60 degrees, 50 degrees, 45 degrees, 40 degrees, 35 degrees, 30 degrees or other values ​​less than or equal to 180 degrees, and this application does not make specific limitations on this.

[0176] According to some embodiments of the present application, optionally, a plurality of first cylindrical surface limiting portions 105 and a plurality of second cylindrical surface limiting portions 106 are provided on at least one side wall of the accommodating cavity 101 along the third direction, and the first cylindrical surface limiting portions 105 and the second cylindrical surface limiting portions 106 are alternately arranged along the first direction on the same side wall, and the third direction, the first direction and the second direction are perpendicular to each other.

[0177] The first cylindrical limiting portion 105 limits the insulating limiting strip 13 in contact with the first cylindrical limiting portion 105 along the third direction, and the second cylindrical limiting portion 106 limits the cylindrical battery cell 20 in contact with the second cylindrical limiting portion 106 along the third direction.

[0178] In Figures 6 and 8 , the third direction includes the B1-B2 direction. Multiple first cylindrical stoppers 105 and multiple second cylindrical stoppers 106 are provided on both sidewalls of the accommodating cavity 101 along the third direction. On each sidewall, the first cylindrical stoppers 105 and the second cylindrical stoppers 106 are alternately arranged along the first direction. For ease of illustration, the sidewall in the B1 direction is referred to as the first sidewall 107, and the sidewall in the B2 direction is referred to as the second sidewall 108.

[0179] In one embodiment, when installing the cylindrical battery cells 20 and the insulating limit bars 13, the opening 103 of the frame 102 is placed upward, and a plurality of cylindrical battery cells 20 are first loaded to form a first row of cylindrical battery cells 20 on the bottom surface of the accommodating cavity 101. Then, a first row of insulating limit bars 13 is placed on the first row of cylindrical battery cells 20, so that the insulating limit bars 13 separate two adjacent cylindrical battery cells 20 in the first row of cylindrical battery cells 20. Then, the second row of cylindrical battery cells 20 is placed on the first row of insulating limit bars 13, and then the second row of insulating limit bars 13 is placed on the second row of cylindrical battery cells 20, and so on. No insulating limit bars 13 are required above the last row of cylindrical battery cells 20. Finally, the baffle 14 is placed on the frame 102 to cover the opening 103, and mechanical pre-fixation or mechanical fixation is performed.

[0180] The insulating limit strip 13 in contact with the first cylindrical limit portion 105 is the insulating limit strip 13 closest to the side wall in a row of insulating limit strips 13 , and the cylindrical battery cell 20 in contact with the second cylindrical limit portion 106 is the cylindrical battery cell 20 closest to the side wall in a row of cylindrical battery cells 20 .

[0181] The first cylindrical surface limiting portion 105 and the second cylindrical surface limiting portion 106 are alternately arranged along the first direction. In one embodiment, please refer to Figures 6 and 8. On the second side wall 108, the first cylindrical surface limiting portion 105 is at the bottom, and along the direction upward from the first direction (such as direction A1), the first cylindrical surface limiting portion 105 and the second cylindrical surface limiting portion 106 are alternately arranged in sequence; on the first side wall 107, due to the presence of the first cylindrical surface accommodating groove 104, the first cylindrical surface limiting portion 105 is at the bottom, and along the direction upward from the first direction (such as direction A1), the first cylindrical surface limiting portion 105 and the second cylindrical surface limiting portion 106 are alternately arranged in sequence. In other embodiments, if the first cylindrical surface accommodating groove 104 is not present, the second cylindrical surface limiting portion 106 is at the bottom, and along the direction upward from the first direction (such as direction A1), the second cylindrical surface limiting portion 106 and the first cylindrical surface limiting portion 105 are alternately arranged in sequence.

[0182] For the odd-numbered rows of cylindrical battery cells 20, the second cylindrical surface stopper 106 on the first side wall 107 stops the cylindrical battery cells 20 in contact with the second cylindrical surface stopper 106. Referring to Figures 6 and 8, when the bottom surface of the accommodating cavity 101 is provided with a first cylindrical accommodating groove 104, for the odd-numbered rows of cylindrical battery cells 20 excluding the first row, the second cylindrical surface stopper 106 on the first side wall 107 stops the cylindrical battery cells 20 in contact with the second cylindrical surface stopper 106. For even-numbered rows of cylindrical battery cells 20, the second cylindrical surface limiting portion 106 on the second side wall 108 limits the cylindrical battery cells 20 in contact with the second cylindrical surface limiting portion 106; for odd-numbered rows of insulating limit strips 13, the first cylindrical surface limiting portion 105 on the second side wall 108 limits the insulating limit strips 13 in contact with the first cylindrical surface limiting portion 105; for even-numbered rows of insulating limit strips 13, the first cylindrical surface limiting portion 105 on the first side wall 107 limits the insulating limit strips 13 in contact with the first cylindrical surface limiting portion 105.

[0183] In another embodiment, on the second side wall 108, the second cylindrical surface stopper 106 is located at the bottom. Along the first upward direction (e.g., direction A1), the second cylindrical surface stopper 106 and the first cylindrical surface stopper 105 are alternately arranged. On the first side wall 107, the first cylindrical surface stopper 105 is located at the bottom. Along the first upward direction (e.g., direction A1), the first cylindrical surface stopper 105 and the second cylindrical surface stopper 106 are alternately arranged. The position limiting of the insulating limit strip 13 by the first cylindrical surface stopper 105 and the position limiting of the cylindrical battery cell 20 by the second cylindrical surface stopper 106 can be referred to the description of the above embodiment and will not be elaborated on here.

[0184] The insulating limit strip 13 in contact with the first cylindrical limit strip 105 is limited by the first cylindrical limit strip 105, and the cylindrical battery cell 20 in contact with the second cylindrical limit strip 106 is limited by the second cylindrical limit strip 106. In combination with the gravity of the insulating limit strip 13 and the cylindrical battery cell 20 themselves and the gravity of the insulating limit strip 13 and the cylindrical battery cell 20 above, the fit between the cylindrical battery cell 20 and the insulating limit strip 13 can be automatically tightened, and the installation is simple.

[0185] In Figures 6 and 8 , the first cylindrical retaining portion 105 comprises a cylindrical surface that protrudes from the sidewall of the accommodating cavity 101 into the accommodating cavity 101. A cylindrical surface is the side surface of a cylinder, and the first cylindrical retaining portion 105 can be formed as a convex hull. When the first cylindrical retaining portion 105 positions the insulating retaining strip 13, the cylindrical surface of a cylindrical receiving groove of the insulating retaining strip 13 contacts the cylindrical surface of the first cylindrical retaining portion 105. Optionally, the radius of the cylindrical battery cell 20 is the same as the radius of the cylinder corresponding to the cylindrical surface of the first cylindrical retaining portion 105.

[0186] The second cylindrical surface stopper 106 comprises a cylindrical surface that is recessed from the interior of the accommodating cavity 101 toward the exterior. A cylindrical surface is the side surface of a cylinder, and the second cylindrical surface stopper 106 may be recessed. When the second cylindrical surface stopper 106 is positioned against the cylindrical battery cell 20, the cylindrical surface of the cylindrical battery cell 20 contacts the cylindrical surface of the second cylindrical surface stopper 106. Optionally, the radius of the cylindrical battery cell 20 is the same as the radius of the cylinder corresponding to the cylindrical surface of the second cylindrical surface stopper 106.

[0187] According to some embodiments of the present application, optionally, the sector angle of the first cylindrical surface limiting portion 105 is less than or equal to 180 degrees, and the sector angle of the second cylindrical surface limiting portion 106 is less than or equal to 180 degrees. The sector angle of the cylindrical surface limiting portion can be the angle between two connecting lines formed by the two ends of the cylindrical surface along the circumference of the cylindrical surface limiting portion and the center of the cylinder corresponding to the cylindrical surface. Referring to Figure 11, the sector angle of the first cylindrical surface limiting portion 105 is angle T3, and angle T3 is less than or equal to 180 degrees. The sector angle of the second cylindrical surface limiting portion 106 is angle T4, and angle T4 is less than or equal to 180 degrees.

[0188] According to some embodiments of the present application, optionally, the distance between the lowermost end of the first cylindrical surface limit portion 105 and the center of the cylindrical battery cell 20 below is L, where L>R+d, R is the radius of the cylindrical battery cell 20, and d is the safety margin. Along the first direction, the transition boundary G below the first cylindrical surface limit portion 105 is located outside the first virtual circle R1. The first virtual circle R1 is defined as: a virtual circle that is tangent to the tangent line T of the cylindrical vertex of the second cylindrical surface limit portion 106 located below the first cylindrical surface limit portion 105 along the first direction, passes through the lowermost end of the first cylindrical surface limit portion 105, and has a radius equal to the radius of the cylindrical battery cell 20, thereby allowing the cylindrical battery cell 20 to be installed downward at least along the first direction, or can be installed along the second direction.

[0189] Please refer to Figure 9. On the second side wall 108, the bottom is the first cylindrical limit portion 105. Along the A1 direction, the first cylindrical limit portion 105 and the second cylindrical limit portion 106 are arranged alternately in sequence. Among them, below the first cylindrical limit portion 105 that contacts the insulating limit strip 13 of the third row of insulating limit strips 13, there is a cylindrical battery cell 20 (hereinafter referred to as E cylindrical battery cell 20). If the sector angle of the first cylindrical limit portion 105 is too large, it may cause difficulty in installing the E cylindrical battery cell 20 below. As shown in the auxiliary illustration of Figure 9, when the sector angle of the first cylindrical limit portion 105 increases significantly along the second virtual circle R2, placing the F cylindrical battery cell 20 first will make it difficult to place the E cylindrical battery cell 20. To ensure that the placement of cylindrical battery cells 20 in the same row is not affected by the placement order, maximizing installation convenience, the distance between the lowest end of the first cylindrical surface stopper 105 and the center of the cylindrical battery cell 20 below is L (this can also be understood as the distance between the center of the E cylindrical battery cell 20 and the lowest end of the first cylindrical surface stopper 105 above is L), satisfying L>R+d, where R is the radius of the cylindrical battery cell 20 and d is a safety margin. d can be determined based on placement convenience, the compactness of the battery 100, and the mechanical strength of the first cylindrical surface stopper 105. This allows the E cylindrical battery cell 20 to be installed downwardly at least along a first direction, as shown by A2 in Figure 8, or along a second direction.

[0190] According to some embodiments of the present application, optionally, under the condition that the mechanical strength of the first cylindrical surface limiting portion 105 is met, the placement of cylindrical battery cells in the same row is less affected by the placement order, maximizing the convenience of installation, d>R×1 / 3.

[0191] Along the first direction, the transition boundary G below the first cylindrical limit portion 105 is located outside the first virtual circle R1. The first virtual circle R1 is defined as: a virtual circle that is tangent to the tangent line T of the cylindrical vertex of the second cylindrical limit portion 106 located below the first cylindrical limit portion 105 along the first direction, passes through the lowermost end of the first cylindrical limit portion 105, and has a radius equal to the radius of the cylindrical battery cell 20.

[0192] The cylindrical vertex of the second cylindrical limiting portion 106 can be a point on one end of the cylindrical surface of the second cylindrical limiting portion 106 along the circumferential direction, which is the end of the cylindrical surface of the second cylindrical limiting portion 106 along the circumferential direction that is close to the upper first cylindrical limiting portion 105.

[0193] The transition boundary G connects the lowermost end of the first cylindrical surface limiting portion 105 and the vertex end of the adjacent lower second cylindrical surface limiting portion 106 .

[0194] According to some embodiments of the present application, optionally, referring to FIG. 12 to FIG. 15 , the insulating limit strip 13 includes an opening 15 , and the opening 15 passes through at least one side surface of the insulating limit strip 13 along the length direction.

[0195] Optionally, in FIG2 , the length direction of the insulating limit strip 13 is along the second direction, and the second direction includes the C1-C2 direction. The opening 15 passes through both side surfaces of the insulating limit strip 13 along the second direction. The opening 15 is a through hole that passes through the insulating limit strip 13 along the second direction. It is understood that in other embodiments, the opening 15 may pass through one side surface of the insulating limit strip 13 along the second direction, for example, the opening 15 passes through one side surface of the insulating limit strip 13 along the C1 direction, or the opening 15 passes through one side surface of the insulating limit strip 13 along the C2 direction. This is not limited in this application.

[0196] The present application does not specifically limit the shape and number of the opening 15 of an insulating limit strip 13. Optionally, the shape of the opening 15 is cylindrical, and the number of the opening 15 of an insulating limit strip 13 is one.

[0197] The provision of the opening 15 is conducive to reducing the weight of the insulating limit strip 13, thereby saving the material of the insulating limit strip 13. The material dropped due to the provision of the opening 15 can be reused, and the cost of the insulating limit strip 13 can also be reduced.

[0198] According to some embodiments of the present application, optionally, the battery 100 includes a heat conducting member 16 , and the heat conducting member 16 is at least partially located in the opening 15 .

[0199] Optionally, in Figure 13, the opening 15 passes through the insulating limit strip 13 along the second direction, the heat conductor 16 is passed through the opening 15, and the heat conductor 16 extends out of the opening 15 at both ends along the second direction. The heat received by the heat conductor 16 is transferred to the two ends, and then the heat is dissipated from the two ends.

[0200] This application does not specifically limit the material of thermal conductor 16. Alternatively, thermal conductor 16 may be a thermal superconductor, such as a heat pipe or a thermally conductive graphite rod. Alternatively, the shape of thermal conductor 16 may be adapted to the shape of opening 15, and thermal conductor 16 within opening 15 may conform to the wall of opening 15 to improve thermal conductivity.

[0201] When the cylindrical battery cell 20 generates heat, the heat of the cylindrical battery cell 20 can be transferred to the heat conductive member 16 through the insulating limit strip 13 . The heat is then transferred from the middle of the heat conductive member 16 to both ends of the heat conductive member 16 for dissipation, effectively dissipating the heat from the cylindrical battery cell 20 .

[0202] According to some embodiments of the present application, optionally, the battery 100 includes a structural reinforcement 17 , which is at least partially located in the opening 15 , and the rigidity of the structural reinforcement 17 is greater than the rigidity of the insulating limit strip 13 .

[0203] Optionally, in FIG14 , the opening 15 passes through the insulating limiting strip 13 along the second direction, and the structural reinforcement member 17 may be at least partially located within the opening 15. Specifically, both ends of the structural reinforcement member 17 along the second direction may extend out of the opening 15, or be flush with the ends of the opening 15, or be located within the opening 15. In FIG14 , both ends of the structural reinforcement member 17 along the second direction are flush with the ends of the opening 15.

[0204] Optionally, the shape of the structural reinforcement 17 is adapted to the shape of the opening 15 , and the structural reinforcement 17 located in the opening 15 fits against the hole wall of the opening 15 to further enhance the rigidity of the insulating limiting strip 13 .

[0205] In one embodiment, the insulating limit strip 13 is made of plastic, and the structural reinforcement 17 is made of metal. The plastic insulating limit strip 13 has low rigidity and is easily crushed by the cylindrical battery cells 20. The metal structural reinforcement 17 has high rigidity, which can increase the rigidity of the insulating limit strip 13 and extend the service life of the insulating limit strip 13.

[0206] According to some embodiments of the present application, the present application further provides a method for grouping battery cells, including:

[0207] A frame 102 is provided, wherein a receiving cavity 101 is formed in the frame 102, and an opening 103 communicating with the receiving cavity 101 is provided on one side of the frame 102;

[0208] Multiple cylindrical battery cells 20 are loaded into the accommodating cavity 101 through the opening 103 , and at least one insulating limit bar 13 is loaded into the accommodating cavity 101 through the opening 103 , so that the multiple cylindrical battery cells 20 are arranged at intervals, and two adjacent cylindrical battery cells 20 are separated and limited by at least one insulating limit bar 13 .

[0209] 5 to 8 , the frame 102 is provided with an opening 103 on its upper side along the gravity direction, communicating with the accommodating cavity 101. The gravity direction is A2, and the opening 103 faces A1, that is, the opening 103 is arranged upward.

[0210] Optionally, when assembling a plurality of cylindrical battery cells 20, the plurality of cylindrical battery cells 20 can be loaded into the accommodating cavity 101 from the opening 103 in a posture where the length direction of the cylindrical battery cells 20 is not parallel to the direction of gravity. Optionally, when assembling the insulating limit strip 13, the insulating limit strip 13 can be loaded into the accommodating cavity 101 from the opening 103 in a posture where the length direction of the insulating limit strip 13 is not parallel to the direction of gravity. Non-parallelism can include tilting and vertical. Optionally, during installation, the cylindrical battery cells 20 are loaded into the accommodating cavity 101 from the opening 103 in a posture where the length direction of the cylindrical battery cells 20 is perpendicular to the direction of gravity, and the insulating limit strip 13 is loaded into the accommodating cavity 101 from the opening 103 in a posture where the length direction of the insulating limit strip 13 is perpendicular to the direction of gravity, so that the plurality of cylindrical battery cells 20 can be arranged at intervals along the direction of gravity.

[0211] Alternatively, the cylindrical battery cells 20 and the insulating limit bars 13 may be loaded into the accommodating cavity 101 using a manipulator, a robot, or other equipment, which is not specifically limited in this application.

[0212] According to some embodiments of the present application, optionally, the grouping method includes: connecting the baffle 14 to the upper side of the frame 102 and covering the opening 103 , so that the baffle 14 limits the position of the cylindrical battery cells 20 in contact with the baffle 14 .

[0213] The baffle 14 can limit and fix the cylindrical battery cells 20 closest to the opening 103 , thereby enabling all cylindrical battery cells 20 in the accommodating cavity to be more effectively limited.

[0214] Specifically, the grouping process of the cylindrical battery cells 20 includes: the first step, the opening 103 of the frame 102 is placed upward, the second step, the first row of cylindrical battery cells 20 is placed in the first cylindrical surface accommodating groove 104 on the bottom surface of the accommodating cavity 101, the third step, the first row of insulating limit strips 13 is placed between the first row of cylindrical battery cells 20, the fourth step, the second row of cylindrical battery cells 20 is placed on the first row of insulating limit strips 13, the fifth step, the second row of insulating limit strips 13 is placed between the second row of cylindrical battery cells 20, and so on. No insulating limit strip 13 is required to be placed above the last row of cylindrical battery cells 20. The last step is to place the baffle 14 and perform mechanical pre-fixation or mechanical fixation.

[0215] During the grouping process, the cylindrical battery cells 20 and the insulating limit strips 13 have low position accuracy requirements during placement. After placement, they will automatically correct to the most stable position under the action of gravity. They are adaptive and the arrangement has self-stability. The positions of the cylindrical battery cells 20 and the insulating limit strips 13 are reliable. As the number of cylindrical battery cells 20 and the insulating limit strips 13 increases, the fit between the cylindrical battery cells 20 and the insulating limit strips 13 automatically becomes tighter and tighter, making installation simple and efficient.

[0216] According to some embodiments of the present application, the present application further provides an electrical device, comprising the battery 100 of any of the above solutions, and the battery 100 is used to provide electrical energy to the electrical device.

[0217] The electrical device may be a device or system using any of the aforementioned batteries 100 .

[0218] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery, characterized in that: include: a frame, wherein a receiving cavity is provided in the frame, and an opening communicating with the receiving cavity is provided on one side of the frame along the first direction; A plurality of cylindrical battery cells, wherein the plurality of cylindrical battery cells are accommodated in the accommodation cavity; At least one insulating limiting strip is accommodated in the accommodating cavity, and two adjacent cylindrical battery cells are separated and limited by the at least one insulating limiting strip.

2. The battery according to claim 1, characterized in that The length direction of the cylindrical battery cell is along the second direction, the length direction of the insulating limit strip is along the second direction, and the second direction and the first direction are perpendicular to each other.

3. The battery according to claim 1 or 2, characterized in that The battery includes multiple rows of cylindrical battery cells arranged at intervals along the first direction, the length direction of the cylindrical battery cells is along the second direction, two adjacent rows of cylindrical battery cells along the first direction are separated and limited by at least one insulating limit bar, and / or, two adjacent cylindrical battery cells in the same row of cylindrical battery cells are separated and limited by at least one insulating limit bar, and the second direction and the first direction are perpendicular to each other.

4. The battery according to claim 3, characterized in that The at least one insulating limit bar includes a plurality of insulating limit bars, which are arranged in a row along a third direction. Two adjacent rows of cylindrical battery cells along the first direction are limited by a row of insulating limit bars, and the third direction, the first direction and the second direction are perpendicular to each other.

5. The battery according to claim 3 or 4, characterized in that The bottom surface of the accommodating cavity is provided with a plurality of first cylindrical accommodating grooves, which are arranged at intervals along the third direction, and the length direction of the first cylindrical accommodating grooves is along the second direction. The plurality of cylindrical battery cells in a row of cylindrical battery cells closest to the bottom surface of the accommodating cavity are respectively accommodated in the plurality of first cylindrical accommodating grooves in a one-to-one correspondence with their parts, and the third direction, the first direction and the second direction are perpendicular to each other.

6. The battery according to any one of claims 3 to 5, characterized in that The at least one insulating limit strip includes a first insulating limit strip, wherein the first insulating limit strip is provided with a second cylindrical surface accommodating groove, a third cylindrical surface accommodating groove and a fourth cylindrical surface accommodating groove; In two adjacent rows of cylindrical battery cells along the first direction, two adjacent cylindrical battery cells in one row of cylindrical battery cells are partially accommodated in the second cylindrical surface accommodating groove and the third cylindrical surface accommodating groove respectively along the third direction, and one cylindrical battery cell in the other row of cylindrical battery cells is partially accommodated in the fourth cylindrical surface accommodating groove, and the third direction, the first direction and the second direction are perpendicular to each other.

7. The battery according to any one of claims 3 to 6, characterized in that The at least one insulating limit strip includes a second insulating limit strip, and the second insulating limit strip is provided with a fifth cylindrical surface accommodating groove, a sixth cylindrical surface accommodating groove, a seventh cylindrical surface accommodating groove and an eighth cylindrical surface accommodating groove; In two adjacent rows of cylindrical battery cells along the first direction, two adjacent cylindrical battery cells in one row of cylindrical battery cells are partially accommodated in the fifth cylindrical surface accommodation groove and the sixth cylindrical surface accommodation groove respectively along the third direction, and two adjacent cylindrical battery cells in the other row of cylindrical battery cells are partially accommodated in the seventh cylindrical surface accommodation groove and the eighth cylindrical surface accommodation groove respectively along the third direction, and the third direction, the first direction and the second direction are perpendicular to each other.

8. The battery according to claim 7, characterized in that The second insulating limit strip is provided with a ninth cylindrical surface accommodating groove and a tenth cylindrical surface accommodating groove; In the two adjacent rows of cylindrical battery cells along the first direction, the three adjacent cylindrical battery cells in one row of cylindrical battery cells are respectively accommodated in the fifth cylindrical surface accommodating groove, the sixth cylindrical surface accommodating groove and the tenth cylindrical surface accommodating groove in a one-to-one correspondence of their parts along the third direction, and the three adjacent cylindrical battery cells in the other row of cylindrical battery cells are respectively accommodated in the ninth cylindrical surface accommodating groove, the seventh cylindrical surface accommodating groove and the eighth cylindrical surface accommodating groove in a one-to-one correspondence of their parts along the third direction.

9. The battery according to claim 8, characterized in that The fifth cylindrical surface accommodating groove, the sixth cylindrical surface accommodating groove, and the tenth cylindrical surface accommodating groove are arranged in sequence along the third direction, and the sector angles of the sixth cylindrical surface accommodating groove, the fifth cylindrical surface accommodating groove, and the tenth cylindrical surface accommodating groove decrease in sequence; The ninth cylindrical surface accommodating groove, the seventh cylindrical surface accommodating groove and the eighth cylindrical surface accommodating groove are arranged in sequence along the third direction, and the sector angles of the seventh cylindrical surface accommodating groove, the eighth cylindrical surface accommodating groove and the ninth cylindrical surface accommodating groove decrease in sequence.

10. The battery according to any one of claims 1 to 9, characterized in that The battery includes a baffle, which is fixedly connected to a side surface of the frame where the opening is provided and covers the opening. The baffle limits the position of the cylindrical battery cell in contact with the baffle.

11. The battery according to claim 10, characterized in that The baffle is provided with a plurality of eleventh cylindrical accommodating grooves on the side facing the accommodating cavity, and the plurality of eleventh cylindrical accommodating grooves are arranged at intervals along the third direction. The plurality of cylindrical battery cells in a row of cylindrical battery cells in contact with the baffle are respectively accommodated in the plurality of eleventh cylindrical accommodating grooves in a one-to-one correspondence with their parts, and the third direction is perpendicular to the first direction.

12. The battery according to any one of claims 5 to 11, characterized in that The sector angle of the cylindrical accommodating groove is less than or equal to 180 degrees.

13. The battery according to claim 12, characterized in that The sector angle of the cylindrical accommodating groove is greater than 45 degrees.

14. The battery according to any one of claims 1 to 13, characterized in that A plurality of first cylindrical limiting portions and a plurality of second cylindrical limiting portions are provided on at least one side wall of the accommodating cavity along the third direction, wherein the first cylindrical limiting portions and the second cylindrical limiting portions are alternately arranged on the same side wall along the first direction, and the third direction is perpendicular to the first direction; The first cylindrical surface limiting portion limits the insulating limiting strip in contact with the first cylindrical surface limiting portion along the third direction. The second cylindrical surface limiting portion limits the cylindrical battery cell in contact with the second cylindrical surface limiting portion along the third direction.

15. The battery according to claim 14, characterized in that The distance between the lowermost end of the first cylindrical surface limit portion and the center of the cylindrical battery cell below is L, where L>R+d, R is the radius of the cylindrical battery cell, and d is the safety margin. Along the first direction, the transition boundary below the first cylindrical surface limit portion is located outside the first virtual circle. The first virtual circle is defined as: a virtual circle that is tangent to the tangent line of the cylindrical vertex of the second cylindrical surface limit portion located below the first cylindrical surface limit portion along the first direction, passes through the lowermost end of the first cylindrical surface limit portion, and has a radius equal to the radius of the cylindrical battery cell.

16. The battery according to claim 15, characterized in that d>R×1 / 3.

17. The battery according to any one of claims 1 to 16, characterized in that The insulating limit strip includes an opening, and the opening passes through at least one side surface of the insulating limit strip along the length direction.

18. The battery according to claim 17, characterized in that The battery includes a heat conducting member at least partially located within the opening.

19. The battery according to claim 17, characterized in that The battery includes a structural reinforcement member, which is at least partially located in the opening, and the rigidity of the structural reinforcement member is greater than the rigidity of the insulating limiting strip.

20. A method for grouping battery cells, characterized in that: include: Providing a frame, wherein a receiving cavity is provided in the frame, and an opening communicating with the receiving cavity is provided on one side of the frame; A plurality of cylindrical battery cells are loaded into the accommodating cavity from the opening, and at least one insulating limit bar is loaded into the accommodating cavity from the opening, so that the plurality of cylindrical battery cells are arranged at intervals, and two adjacent cylindrical battery cells are separated and limited by at least one insulating limit bar.

21. The grouping method according to claim 20, characterized in that: The grouping method includes: A baffle is connected to the upper side of the frame and covers the opening, so that the baffle limits the position of the cylindrical battery cell in contact with the baffle.

22. An electrical device, characterized in that: A battery comprising the battery according to any one of claims 1 to 19, wherein the battery is used to provide electrical energy.

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