Battery, grouping method, and electric device

Abstract

The application discloses a battery, a grouping method and a power utilization device. The battery comprises a frame, a containing cavity in the frame, an opening on one side of the frame along a first direction and communicating with the containing cavity, a plurality of cylindrical battery monomers accommodated in the containing cavity, and at least one insulating limiting strip accommodated in the containing cavity and separating and limiting two adjacent cylindrical battery monomers. The battery can simplify the installation of the cylindrical battery module and save time.

Description

Technical Field

[0001] This application relates to the field of batteries, specifically to a battery, a method for assembling batteries, and an electrical device. Background Technology

[0002] In related technologies, the battery cell assembly method usually involves inserting battery cells into a frame. The insertion process requires high positioning accuracy and high equipment quality, and also requires a large amount of glue to improve strength and rigidity. However, the glue is expensive, has a long curing time, and makes it difficult to replace the battery cells after gluing. Summary of the Invention

[0003] In view of the above problems, this application provides a battery, a battery packing method, and an electrical device that can solve the problems of high positional accuracy requirements and long packing time in the battery cell packing process.

[0004] In a first aspect, this application provides a battery, the battery comprising: A frame, wherein a receiving cavity is provided within the frame, and an opening communicating with the receiving cavity is provided on one side of the frame along a first direction; Multiple cylindrical battery cells are housed in the accommodating cavity; At least one insulating limiting strip is disposed in the receiving cavity, and adjacent two cylindrical battery cells are separated and limited by at least one of the insulating limiting strips.

[0005] In the technical solution of this application embodiment, when cylindrical battery cells are assembled, the opening can be placed vertically upwards. Multiple cylindrical battery cells and insulating limiting strips can be installed into the receiving cavity from top to bottom through the opening. During the assembly of cylindrical battery cells, the positional accuracy requirements for the placement of cylindrical battery cells and insulating limiting strips are low. After placement, they will automatically correct to the most stable position under the action of gravity, exhibiting self-adaptability and self-stability in arrangement. The positions of cylindrical battery cells and insulating limiting strips are reliable. Moreover, as the number of cylindrical battery cells and insulating limiting strips increases, the fit between the cylindrical battery cells and insulating limiting strips automatically becomes tighter and tighter. Installation is simple and time-saving. Furthermore, the cylindrical battery cells can be limited by the fit between the insulating limiting strips and the frame.

[0006] 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.

[0007] The length direction of the insulating limiting strip is parallel to the length direction of the cylindrical battery cell, which allows for a larger contact area between the insulating limiting strip and the cylindrical battery cell in the length direction, thus improving the limiting effect of the insulating limiting strip on the cylindrical battery cell.

[0008] In some embodiments, the battery includes multiple rows of cylindrical battery cells spaced apart along the first direction, the length direction of the cylindrical battery cells being along the second direction, adjacent rows of cylindrical battery cells along the first direction being separated and limited by at least one of the insulating limiting strips, and / or, adjacent two cylindrical battery cells in the same row being separated and limited by at least one of the insulating limiting strips, the second direction and the first direction being perpendicular to each other.

[0009] On the one hand, the insulating limiting strip can separate the cylindrical battery cells to achieve electrical isolation between adjacent cylindrical battery cells, avoiding short circuits caused by contact between the cylindrical surfaces of adjacent cylindrical battery cells in the same row or different rows. On the other hand, the insulating limiting strip can also limit the movement of the cylindrical battery cells to prevent displacement. The battery includes multiple rows of cylindrical battery cells arranged at intervals along the first direction, which allows for a more regular arrangement of the cylindrical battery cells and the placement of a larger number of cylindrical battery cells, thus improving the energy density of the battery.

[0010] In some embodiments, the at least one insulating limiting strip includes a plurality of insulating limiting strips arranged in a row along a third direction, and adjacent rows of cylindrical battery cells along the first direction are limited by a row of insulating limiting strips, wherein the third direction, the first direction and the second direction are perpendicular to each other.

[0011] Along the first direction, adjacent rows of cylindrical battery cells are separated by a row of insulating limiting strips, which makes the two rows of cylindrical battery cells fit tightly and prevents them from shifting.

[0012] In some embodiments, the bottom surface of the accommodating cavity is provided with a plurality of first cylindrical receiving grooves, the plurality of first cylindrical receiving grooves are arranged at intervals along a third direction, the length direction of the first cylindrical receiving grooves is along the second direction, and a plurality of cylindrical battery cells of a row of cylindrical battery cells closest to the bottom surface of the accommodating cavity are respectively housed in the plurality of first cylindrical receiving grooves in a partially corresponding manner, the third direction, the first direction and the second direction are perpendicular to each other.

[0013] The first cylindrical receiving groove is used to accommodate the first row of cylindrical battery cells. It can limit the position of the first row of cylindrical battery cells on the bottom surface of the receiving cavity, thereby avoiding or reducing the displacement of the cylindrical battery cells.

[0014] 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 receiving groove, a third cylindrical receiving groove and a fourth cylindrical receiving groove; In two adjacent rows of cylindrical battery cells along the first direction, two adjacent cylindrical battery cells in one row are respectively partially housed in the second cylindrical surface receiving groove and the third cylindrical surface receiving groove along the third direction, and one cylindrical battery cell in the other row is partially housed in the fourth cylindrical surface receiving groove. The third direction, the first direction and the second direction are perpendicular to each other.

[0015] The second, third, and fourth cylindrical receiving grooves of a first insulating limiting strip can limit the movement of three cylindrical battery cells in contact with the first insulating limiting strip, preventing or reducing displacement of the cylindrical battery cells. The first insulating limiting strip is simple to manufacture, the batteries are lightweight, and it is easy to replace individual cylindrical battery cells after assembly; in addition, the first insulating limiting strip, which limits the movement of a smaller number of cylindrical battery cells, can reduce maintenance costs when replacing them.

[0016] In some embodiments, the at least one insulating limiting strip includes a second insulating limiting strip, the second insulating limiting strip being provided with a fifth cylindrical receiving groove, a sixth cylindrical receiving groove, a seventh cylindrical receiving groove and an eighth cylindrical receiving groove; In two adjacent rows of cylindrical battery cells along the first direction, two adjacent cylindrical battery cells in one row are respectively partially housed in the fifth cylindrical surface receiving groove and the sixth cylindrical surface receiving groove along the third direction, and two adjacent cylindrical battery cells in the other row are respectively partially housed in the seventh cylindrical surface receiving groove and the eighth cylindrical surface receiving groove along the third direction, wherein the third direction, the first direction, and the second direction are perpendicular to each other.

[0017] The fifth, sixth, seventh, and eighth cylindrical receiving grooves of a second insulating limiting strip can limit the movement of four cylindrical battery cells in contact with the second insulating limiting strip, preventing or reducing displacement of the cylindrical battery cells. Optionally, in one embodiment, compared to the first insulating limiting strip, the fifth, sixth, seventh, and eighth cylindrical receiving grooves of the second insulating limiting strip have larger sector angles on their cylindrical surfaces (contact surfaces), resulting in the highest space utilization, more stable battery structure, and higher strength. Furthermore, one second insulating limiting strip can limit more cylindrical battery cells. When limiting the same number of cylindrical battery cells, the number of insulating limiting strips used and installation time can be reduced, improving installation efficiency and reducing costs. To further improve installation efficiency, the second insulating limiting strip can be designed to span more cylindrical battery cells.

[0018] In some embodiments, the second insulating limiting strip is provided with a ninth cylindrical receiving groove and a tenth cylindrical receiving groove; In two adjacent rows of cylindrical battery cells along the first direction, three adjacent cylindrical battery cells in one row are respectively housed in the fifth cylindrical receiving groove, the sixth cylindrical receiving groove, and the tenth cylindrical receiving groove in a partially one-to-one correspondence along the third direction. Three adjacent cylindrical battery cells in the other row are respectively housed in the ninth cylindrical receiving groove, the seventh cylindrical receiving groove, and the eighth cylindrical receiving groove in a partially one-to-one correspondence along the third direction.

[0019] The fifth, sixth, seventh, eighth, ninth, and tenth cylindrical receiving grooves can limit the movement of the six cylindrical battery cells in contact with the second insulating limiting strip, preventing or reducing displacement of the battery cells. Furthermore, one second insulating limiting strip can limit more cylindrical battery cells. When limiting the same number of cylindrical battery cells, this reduces the number of insulating limiting strips needed, installation time, installation efficiency, and cost.

[0020] In some embodiments, the fifth cylindrical receiving groove, the sixth cylindrical receiving groove, and the tenth cylindrical receiving groove are arranged sequentially along the third direction, and the sector angles of the sixth cylindrical receiving groove, the fifth cylindrical receiving groove, and the tenth cylindrical receiving groove decrease sequentially. The ninth cylindrical receiving groove, the seventh cylindrical receiving groove, and the eighth cylindrical receiving groove are arranged sequentially along the third direction, and the sector angles of the seventh cylindrical receiving groove, the eighth cylindrical receiving groove, and the ninth cylindrical receiving groove decrease sequentially.

[0021] In two adjacent second insulating limiting strips in the same row, the tenth cylindrical receiving groove of one second insulating limiting strip and the fifth cylindrical receiving groove of the other second insulating limiting strip can jointly limit the same cylindrical battery cell below. In two adjacent second insulating limiting strips in the same row, the ninth cylindrical receiving groove of one second insulating limiting strip and the eighth cylindrical receiving groove of the other second insulating limiting strip can jointly limit the same cylindrical battery cell above, resulting in good limiting effect.

[0022] In some embodiments, the battery includes a baffle that is fixedly connected to and covers the side of the frame having the opening, and the baffle limits the position of the cylindrical battery cell that contacts the baffle.

[0023] 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.

[0024] In some embodiments, the side of the baffle facing the receiving cavity is provided with a plurality of eleventh cylindrical receiving slots. The plurality of eleventh cylindrical receiving slots are arranged at intervals along a third direction. A plurality of cylindrical battery cells of a row of cylindrical battery cells in contact with the baffle are respectively housed in the plurality of eleventh cylindrical receiving slots in a partially corresponding manner. The third direction is perpendicular to the first direction.

[0025] The eleventh cylindrical receiving groove can limit the movement of cylindrical battery cells that are in contact with the baffle, thus avoiding or reducing the displacement of the cylindrical battery cells.

[0026] In some embodiments, the sector angle of the cylindrical receiving groove is less than or equal to 180 degrees.

[0027] The sector angle of the cylindrical receiving groove is less than or equal to 180 degrees, and the groove opening angle of the cylindrical receiving groove is relatively large, which makes it easier for the cylindrical battery cells to enter the cylindrical receiving groove, thus improving the installation efficiency.

[0028] In some embodiments, the sector angle of the cylindrical receiving groove is greater than 45 degrees.

[0029] The sector angle of the cylindrical receiving groove is greater than 45 degrees and less than or equal to 180 degrees. The groove opening angle of the cylindrical receiving groove is moderate, which can improve the installation efficiency and limiting effect of the cylindrical battery cells while ensuring the mechanical strength of the frame and the insulating limiting strip.

[0030] In some embodiments, the accommodating cavity is provided with a plurality of first cylindrical surface limiting portions and a plurality of second cylindrical surface limiting portions on at least one side wall along a third direction, the first cylindrical surface limiting portions and the second cylindrical surface 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; The first cylindrical surface limiting portion limits the insulating limiting strip that is 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 that is in contact with the second cylindrical surface limiting portion along the third direction.

[0031] The insulating limiting strip that contacts the first cylindrical limiting part is limited by the first cylindrical limiting part, and the cylindrical battery cell that contacts the second cylindrical limiting part is limited by the second cylindrical limiting part. With the combined effect of the gravity of the insulating limiting strip and the cylindrical battery cell itself, and the gravity of the insulating limiting strip and the cylindrical battery cell above, the fit between the cylindrical battery cell and the insulating limiting strip can be made tighter automatically, and the installation is simple.

[0032] In some embodiments, the distance between the lowest end of the first cylindrical surface limiting portion and the center of the lower cylindrical battery cell is L, where L>R+d, R is the radius of the cylindrical battery cell, and d is a safety margin. Along the first direction, the transition boundary below the first cylindrical surface limiting 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 at the apex of the cylindrical surface of the second cylindrical surface limiting portion located below the first cylindrical surface limiting portion along the first direction, passes through the lowest end of the first cylindrical surface limiting portion, and has a radius equal to the radius of the cylindrical battery cell.

[0033] If the sector angle of the first cylindrical surface limiting portion is too large, it may cause difficulty in installing the lower cylindrical battery cells. When the sector angle of the first cylindrical surface limiting portion increases significantly along the second virtual circle, placing the cylindrical battery cells first will make it difficult to place the other cylindrical battery cells conveniently. 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 ease of installation, firstly, the distance L between the lowest point of the first cylindrical surface limiting portion and the center of the lower cylindrical battery cell satisfies L>R+d. Secondly, along the first direction, the transition boundary below the first cylindrical surface limiting portion is located outside the first virtual circle.

[0034] In some embodiments, d > R × 1 / 3.

[0035] Under the condition of satisfying the mechanical strength of the first cylindrical surface limiting part, the arrangement of cylindrical battery cells in the same row is less affected by the placement order, which makes installation easier.

[0036] In some embodiments, the battery includes an opening that penetrates at least one side of the insulating limiting strip along the second direction.

[0037] The perforations help reduce the weight of the insulating limit strip, thus saving material and increasing the energy density of the battery. Material that falls out due to the perforations can be reused, further reducing the cost of the insulating limit strip.

[0038] In some embodiments, the battery includes a thermally conductive element located at least partially within the opening.

[0039] When a cylindrical battery cell generates heat, the heat can be transferred to the heat-conducting component through the insulating limiting strip. The heat is then transferred from the middle of the heat-conducting component to both ends for dissipation, effectively cooling the cylindrical battery cell.

[0040] In some embodiments, the battery includes a structural reinforcement located at least partially within the opening, the structural reinforcement having a stiffness greater than that of the insulating limiting strip.

[0041] The insulating limit strip has low stiffness and is easily damaged by cylindrical battery cells. The structural reinforcement has higher stiffness, which increases the rigidity of the insulating limit strip and extends its service life.

[0042] Secondly, this application provides a method for assembling battery cells into a group, the method comprising: A frame is provided, the frame having a receiving cavity, and one side of the frame having an opening communicating with the receiving cavity; Multiple cylindrical battery cells are inserted into the receiving cavity through the opening, and at least one insulating limiting strip is inserted into the receiving cavity through the opening, so that the multiple cylindrical battery cells are arranged at intervals, and adjacent cylindrical battery cells are separated and limited by at least one insulating limiting strip.

[0043] In the above grouping method, the positional accuracy requirements for cylindrical battery cells and insulating limit strips are low during placement. After placement, they will automatically correct to the most stable position under the action of gravity, exhibiting self-adaptability. The arrangement has self-stability, and the positions of 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 insulating limit strips automatically becomes tighter and tighter. The installation is simple and efficient.

[0044] In some embodiments, the grouping method includes: The baffle is connected to the upper side of the frame and covers the opening, so that the baffle limits the cylindrical battery cell that contacts the baffle.

[0045] 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.

[0046] Thirdly, this application provides an electrical device that includes a battery according to any of the above embodiments, the battery being used to provide electrical energy.

[0047] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0048] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1This is a schematic diagram of the vehicle structure according to some embodiments of this application; Figure 2 This is an exploded structural diagram of a battery according to some embodiments of this application; Figure 3 for Figure 2 An enlarged schematic diagram of the P section of the battery; Figure 4 for Figure 2 An enlarged schematic diagram of the Q section of the battery; Figure 5 This is a partial structural diagram of a battery according to some embodiments of this application; Figure 6 This is a partially exploded structural diagram of a battery according to some embodiments of this application; Figure 7 This is a schematic diagram of another part of the battery structure according to some embodiments of this application; Figure 8 This is an exploded structural diagram of another part of the battery according to some embodiments of this application; Figure 9 This is a schematic diagram of another part of the structure of a battery according to some embodiments of this application; Figure 10 This is a partially enlarged schematic diagram of a battery according to some embodiments of this application; Figure 11 This is an enlarged schematic diagram of another part of the battery in some embodiments of this application; Figures 12 to 14 This is a schematic diagram of the structure of the first insulating limiting strip in some embodiments of this application; Figure 15 This is a schematic diagram of the structure of the second insulating limiting strip in some embodiments of this application.

[0049] The reference numerals in the detailed embodiments are as follows: 1000 vehicles; Battery 100, controller 200, motor 300; Frame 10, receiving cavity 101, frame 102, opening 103, first cylindrical receiving groove 104, first cylindrical limiting part 105, second cylindrical limiting part 106, first side wall 107, second side wall 108. Cylindrical battery cell 20, 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; Second cover plate assembly 12; Insulating limiting strip 13, first insulating limiting strip 131, second cylindrical receiving groove 132, third cylindrical receiving groove 133, fourth cylindrical receiving groove 134, second insulating limiting strip 135, fifth cylindrical receiving groove 136, sixth cylindrical receiving groove 137, seventh cylindrical receiving groove 138, eighth cylindrical receiving groove 139, ninth cylindrical receiving groove 140, tenth cylindrical receiving groove 141; baffle 14, eleventh cylindrical receiving groove 142; 15mm opening; Thermal conductive component 16; Structural reinforcement component 17. Detailed Implementation

[0050] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0052] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0053] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0054] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0055] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0056] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0057] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0058] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0059] The inventors of this application have noted that in related technologies, the battery cell assembly method is mostly to insert the battery cells into a frame. The insertion process has high requirements for positioning procedures and positioning accuracy, high equipment requirements, and requires a large amount of glue to improve strength and rigidity. However, the glue is expensive, has a long curing time, and is difficult to replace after glue application.

[0060] Based on the above considerations, in order to solve the problems of high positional accuracy requirements and long assembly time during the battery cell assembly process, the inventors of this application, after in-depth research, designed a battery comprising a frame, multiple cylindrical battery cells, and at least one insulating limiting strip. The frame has a receiving cavity, and one side of the frame along a first direction has an opening communicating with the receiving cavity. The multiple cylindrical battery cells are housed in the receiving cavity. The insulating limiting strip is housed in the receiving cavity, and adjacent cylindrical battery cells are separated and limited by at least one insulating limiting strip.

[0061] In such a battery, when cylindrical battery cells are assembled, the opening can be placed vertically upwards. Multiple cylindrical battery cells and insulating limiting strips can be installed into the receiving cavity from top to bottom through the opening. During the assembly process of cylindrical battery cells, the positional accuracy requirements for the placement of cylindrical battery cells and insulating limiting strips are low. After placement, they will automatically correct to the most stable position under the action of gravity, exhibiting self-adaptability and self-stability in arrangement. The positions of cylindrical battery cells and insulating limiting strips are reliable. Moreover, as the number of cylindrical battery cells and insulating limiting strips increases, the fit between the cylindrical battery cells and insulating limiting strips automatically becomes tighter and tighter. Installation is simple and time-saving. Furthermore, the cylindrical battery cells can be limited by the fit between the insulating limiting strips and the frame.

[0062] The batteries disclosed in this application can be applied to electrical devices that serve as power sources or to various energy storage systems that use batteries as energy storage elements. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0063] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0064] Please refer to Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery 100 is disposed inside the vehicle 1000, and the battery 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery 100 can be used to power the vehicle 1000; for example, the battery 100 can serve as the 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 supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0065] In some embodiments of this application, the battery 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0066] Please refer to Figure 2 , Figure 2 This is an exploded view of a battery 100 provided in some embodiments of this 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 has a receiving cavity 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 receiving cavity 101 forms a relatively sealed state, and the cylindrical battery cell 20 is accommodated in the receiving cavity 101. The whole formed by connecting the frame 10, the first cover assembly 11, and the second cover assembly 12 can be of various shapes, such as a cylinder, a cuboid, etc.

[0067] In battery 100, there can be multiple cylindrical battery cells 20. These multiple cylindrical battery cells 20 can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that the multiple cylindrical battery cells 20 are connected in both series and parallel. Multiple cylindrical battery cells 20 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple cylindrical battery cells 20 is housed in a receiving cavity. Alternatively, battery 100 can also be composed of multiple cylindrical battery cells 20 first connected in series, parallel, or in a mixed configuration to form a battery module, and then multiple battery modules are connected in series, parallel, or in a mixed configuration to form a whole, which is then housed in a receiving cavity. Battery 100 may also include other structures; for example, battery 100 may also include a busbar component for realizing the electrical connection between the multiple cylindrical battery cells 20.

[0068] Each cylindrical battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery or a magnesium-ion battery, but is not limited to these.

[0069] Please refer to some embodiments of this application as well. Figures 3 to 8 This application provides a battery 100, which includes a frame 102, a plurality of cylindrical battery cells 20, and at least one insulating limiting strip 13. The frame 102 has a receiving cavity 101, and one side of the frame 102 along a first direction has an opening 103 communicating with the receiving cavity 101. The plurality of cylindrical battery cells 20 are housed in the receiving cavity 101. The insulating limiting strip 13 is housed in the receiving cavity 101, and adjacent cylindrical battery cells 20 are separated and limited by at least one insulating limiting strip 13.

[0070] Optionally, in Figures 5 to 9 In this embodiment, the battery 100 includes multiple rows of cylindrical battery cells 20. These rows of cylindrical battery cells 20 are spaced apart along a first direction, and each row includes multiple cylindrical battery cells 20. These multiple cylindrical battery cells 20 are spaced apart along a third direction, the first direction including direction A1-A2, the second direction including direction C1-C2, and the third direction including direction B1-B2. It is understood that in other embodiments, the number of cylindrical battery cells 20 in each row may be only one.

[0071] Please combine Figures 5 to 8 Optionally, during the assembly of battery cells, the opening 103 of the frame 102 can be set vertically upward, that is, the opening 103 is set towards the A1 direction, and then the cylindrical battery cell 20 and the insulating limiting strip 13 can be inserted through the opening 103. When the cylindrical battery cell 20 and the insulating limiting strip 13 are inserted, the cylindrical battery cell 20 is inserted into the receiving cavity 101 through the opening 103 with its length direction not parallel to the direction of gravity (direction A2 in the figure). Similarly, the insulating limiting strip 13 is inserted into the receiving cavity 101 through the opening 103 with its length direction not parallel to the direction of gravity. This allows the cylindrical battery cell 20 to automatically correct itself under gravity so that its length direction is along the second direction when it comes into contact with the bottom surface of the receiving cavity 101 or the lower cylindrical battery cell 20. It also allows the insulating limiting strip 13 to automatically correct itself under gravity so that its length direction is along the second direction when it comes into contact with the cylindrical battery cell 20.

[0072] This application does not specifically limit the number of cylindrical battery cells 20 and insulating limiting strips 13. Optionally, in one embodiment, the battery 100 includes N rows of cylindrical battery cells 20 spaced apart along a 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 is M, where M is a natural number greater than or equal to 1. M and N are not both equal to 1, meaning the battery may include N×M cylindrical battery cells 20. In another embodiment, the number of cylindrical battery cells 20 in each row may be different.

[0073] On the one hand, the insulating limiting strip 13 can separate the cylindrical battery cells 20 to achieve electrical isolation between adjacent cylindrical battery cells 20, avoiding short circuits caused by contact between the cylindrical surfaces of adjacent cylindrical battery cells 20 in the same row or different rows. On the other hand, the insulating limiting strip 13 can also limit the cylindrical battery cells 20 to prevent displacement. Optionally, the insulating limiting strip 13 can be made of plastic.

[0074] The frame 102 can limit and fix the cylindrical battery cells 20 located in the accommodating cavity 101. Specifically, during the assembly process, under the action of gravity, the cylindrical battery cells 20 that are placed later into the accommodating cavity 101 can be pressed against the cylindrical battery cells 20 that are placed earlier into the accommodating cavity 101 by the insulating limiting strip 13, so that the fit between the cylindrical battery cells 20 and the insulating limiting strip 13 automatically becomes tighter and tighter, and the cylindrical battery cells 20 that are in contact with the side wall of the accommodating cavity 101 are limited by the frame 102.

[0075] This application does not specifically limit the material of the frame 102. Optionally, if the structural strength requirement of the battery 100 is low, the frame 102 can be made of plastic. If the structural strength requirement of the battery 100 is high, the frame 102 can be made of metal (such as iron, stainless steel, etc.). When the frame 102 is made of metal, it is insulated, for example, by applying insulating paint or an insulating film to the frame 102 to electrically isolate the frame 102 from the cylindrical battery cell 20, etc.

[0076] According to some embodiments of this application, optionally, the battery 100 includes a baffle 14, the baffle 14 is fixedly connected to the side of the frame 102 having an opening 103 and covers the opening 103, and the baffle 14 limits the cylindrical battery cell 20 that contacts the baffle 14.

[0077] Specifically, the frame 102 and the baffle 14 can be connected to form a frame, 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 row of cylindrical battery cells 20 in contact with the baffle 14. During the assembly 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 strip 13, so that the cooperation between the cylindrical battery cells 20 and the insulating limiting strip 13 automatically becomes tighter and tighter, and the cylindrical battery cells 20 in contact with the side wall of the accommodating cavity 101 are limited 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 mechanically 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 can be fixedly connected by bolts, welding or other means, and this application does not make specific limitations in this regard.

[0078] This application does not specifically limit the material of the baffle 14. Optionally, if the structural strength requirement of the battery 100 is low, the baffle 14 can be made of plastic. If the structural strength requirement of the battery 100 is high, the baffle 14 can be made of metal (such as iron, stainless steel, etc.). When the baffle 14 is made of metal, it is insulated, for example, by applying insulating paint or an insulating film to the baffle 14 to electrically isolate it from the cylindrical battery cell 20, etc. The materials of the baffle 14 and the frame 102 can be the same or different, and this application does not specifically limit this.

[0079] The baffle 14 can limit and fix the cylindrical battery cell 20 closest to the opening 103, thereby enabling all cylindrical battery cells 20 in the accommodating cavity to be more effectively limited.

[0080] Additionally, the battery 100 includes a first cover assembly 11 and a second cover assembly 12, the first cover assembly 11 and the second cover assembly 12 being respectively connected to the frame along a second direction (e.g., Figure 2 The two ends of the cavity 101 (in the C1-C2 direction) form a relatively sealed state, and the cylindrical battery cell 20 is accommodated in the cavity 101. The whole formed by the frame, the first cover plate assembly 11 and the second cover plate assembly 12 can protect the cylindrical battery cell 20.

[0081] exist Figure 2 In this configuration, the first cover plate assembly 11 is connected to one end of the frame 102 along the C1 direction, and the second cover plate assembly 12 is connected to one end of the frame 102 along the C2 direction. Optionally, in some embodiments of this application, the first cover plate assembly 11 and the second cover plate assembly 12 have the same structure.

[0082] The following explanation uses the first cover plate assembly 11 as an example.

[0083] 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, busbar 112, second insulating plate 113, and cooling plate 114 are arranged sequentially away from the cylindrical battery cell 20. The first insulating plate 111 supports and fixes the busbar 112. The first insulating plate 111 has multiple first through holes 115 along its 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 release air in the event of thermal runaway of the cylindrical battery cell 20. Optionally, the first insulating plate 111 also has multiple second through holes 116 along its thickness direction. The second through holes 116 allow the heat-conducting element 16 (described later) on the insulating limiting strip 13 to pass through. If there is no heat-conducting element 16 on the insulating limiting strip 13, the first insulating element may not have the second through holes 116.

[0084] Busbar 112 has multiple third through holes 117 along its thickness direction. These third through holes 117 connect to the first through hole 115. The third through holes 117 are used for welding one electrode of the cylindrical battery cell 20 to the busbar 112 and for venting gas in the event of thermal runaway in the cylindrical battery cell 20. Optionally, busbar 112 has multiple fifth through holes 119 along its thickness direction. These fifth through holes 119 connect to the second through hole 116 and allow the heat-conducting element 16 (described later) on the insulating limiting strip 13 to pass through. If the insulating limiting strip 13 does not have a heat-conducting element 16, the busbar 112 may not have the fifth through holes 119.

[0085] The second insulating plate 113 has multiple fourth through holes 118 along its thickness direction. These fourth through holes 118 can be used to vent air when thermal runaway occurs in the cylindrical battery cell 20. The cooling plate 114 can dissipate heat from inside the battery 100 to the outside. Optionally, when the insulating limiting strip 13 is provided with a heat-conducting element 16, the heat in the middle of the cylindrical battery cell 20 can be transferred through the insulating limiting strip 13 to both ends of the heat-conducting element 16. The two ends of the heat-conducting element 16 then transfer the heat to the cooling plate 114, which dissipates the heat to the outside of the battery 100, thereby cooling the cylindrical battery cell 20. It can be understood that even without the heat-conducting element 16 on the insulating limiting strip 13, the heat from the cylindrical battery cell 20 can still be transferred to the cooling plate 114. Optionally, the cooling plate 114 can be a liquid cooling plate.

[0086] Optionally, the second insulating plate 113 has a sixth through hole along its thickness direction, through which the heat-conducting element 16 can pass, bringing the heat-conducting element 16 closer to the cooling plate 114 and improving the heat dissipation efficiency of the cylindrical battery cell 20. The heat-conducting element 16 may or may not contact the cooling plate 114; this application does not specifically limit this.

[0087] The busbar 112 of the second cover plate assembly 12 is welded to the other electrode of the cylindrical battery cell 20.

[0088] When the aforementioned cylindrical battery cells 20 are assembled into a group, the opening 103 can be arranged vertically upwards, for example, in Figure 6 In the assembly, opening 103 is arranged along direction A1, and gravity direction is along direction A2. Multiple cylindrical battery cells 20 and multiple insulating limiting strips 13 can be installed into the receiving cavity 101 from top to bottom through opening 103. During the assembly of the cylindrical battery cells 20, the positional accuracy requirements for the placement of the cylindrical battery cells 20 and insulating limiting strips 13 are low. After placement, they will automatically correct to the most stable position under the action of gravity, exhibiting self-adaptability and self-stability in arrangement. The positions of the cylindrical battery cells 20 and insulating limiting strips 13 are reliable. Moreover, as the number of cylindrical battery cells 20 and insulating limiting strips 13 increases, the fit between the cylindrical battery cells 20 and insulating limiting strips 13 automatically becomes tighter and tighter, simplifying installation and reducing time. Furthermore, the cylindrical battery cells 20 can be separated and limited by the frame 102 and the insulating limiting strips 13.

[0089] Optionally, in the battery 100 of this application, a small portion of the cylindrical battery cells 20 may be pseudo-cylindrical battery cells 20 or other structural components with the structure of cylindrical battery cells 20 and used for auxiliary functions. This application does not specifically limit this.

[0090] Alternatively, to improve installation efficiency, all cylindrical battery cells 20 are identical in size (including height and radius).

[0091] According to some embodiments of this 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.

[0092] exist Figure 2 In this design, the length direction of the insulating limiting strip 13 is along the C1-C2 direction, and the length direction of the cylindrical battery cell 20 is also along the C1-C2 direction. Therefore, the length direction of the insulating limiting strip 13 is parallel to the length direction of the cylindrical battery cell 20, which results in a larger contact area between the insulating limiting strip 13 and the cylindrical battery cell 20 in the length direction, thus improving the limiting effect of the insulating limiting strip 13 on the cylindrical battery cell 20.

[0093] According to some embodiments of this application, optionally, the battery 100 includes multiple rows of cylindrical battery cells 20 spaced apart along a first direction, the length direction of the cylindrical battery cells 20 is along a second direction, adjacent rows of cylindrical battery cells 20 along the first direction are separated and limited by at least one insulating limiting strip 13, and / or, adjacent two cylindrical battery cells 20 in the same row are separated and limited by at least one insulating limiting strip 13, the second direction and the first direction are perpendicular to each other.

[0094] exist Figure 5 In the first direction, A1-A2, multiple rows of cylindrical battery cells 20 are arranged at intervals along A1-A2, and 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 arranged at intervals along a third direction (B1-B2). Adjacent rows of cylindrical battery cells 20 along the first direction are separated and limited by at least one insulating limiting strip 13, and adjacent two cylindrical battery cells 20 within the same row are separated and limited by at least one insulating limiting strip 13.

[0095] On the one hand, the insulating limiting strip 13 can separate the cylindrical battery cells 20 to achieve electrical isolation between adjacent cylindrical battery cells 20, avoiding short circuits caused by contact between the cylindrical surfaces of adjacent cylindrical battery cells 20 in the same row or different rows. On the other hand, the insulating limiting strip 13 can also limit the cylindrical battery cells 20 to prevent displacement. 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 and can accommodate a larger number of cylindrical battery cells 20, which is beneficial to improving the energy density of the battery 100.

[0096] It is understood that in other embodiments, adjacent rows of cylindrical battery cells 20 along the first direction are separated and limited by at least one of the insulating limiting strips 13, or adjacent two cylindrical battery cells 20 in the same row are separated and limited by at least one of the insulating limiting strips 13.

[0097] According to some embodiments of this application, optionally, at least one insulating limiting strip 13 includes a plurality of insulating limiting strips 13, the plurality of insulating limiting strips 13 are arranged in a row along a third direction, and adjacent rows of cylindrical battery cells 20 are limited by a row of insulating limiting strips 13 along a first direction, the third direction, the first direction and the second direction are perpendicular to each other.

[0098] exist Figures 5 to 8In the figure, each row of insulating limiting strips 13 includes multiple insulating limiting strips 13. The first direction includes the A1-A2 direction, and the third direction includes the B1-B2 direction. The number of rows of insulating limiting strips 13 in the figure is 4, and the number of insulating limiting strips 13 in each row can be the same or different. The number of rows of cylindrical battery cells 20 is 5, and the number of cylindrical battery cells 20 in each row can be the same or different. In one embodiment, the number of insulating limiting strips 13 in each row can be 1.

[0099] It is understood that this application does not specifically limit the number of rows and quantities of insulating limit strips 13, nor does it specifically limit the number of rows and quantities of cylindrical battery cells 20.

[0100] Along the first direction, adjacent rows of cylindrical battery cells 20 are limited by a row of insulating limiting strips 13, so that the adjacent rows of cylindrical battery cells 20 fit tightly and are not easy to shift.

[0101] According to some embodiments of this application, optionally, the bottom surface of the receiving cavity 101 is provided with a plurality of first cylindrical receiving grooves 104, the plurality of first cylindrical receiving grooves 104 are arranged at intervals along a third direction, the length direction of the first cylindrical receiving grooves 104 is along a second direction, and a plurality of cylindrical battery cells 20 of a row of cylindrical battery cells 20 closest to the bottom surface of the receiving cavity 101 are respectively housed in the plurality of first cylindrical receiving grooves 104 in a partially corresponding manner, the third direction, the first direction and the second direction are perpendicular to each other.

[0102] exist Figure 10 The structure of the first cylindrical receiving groove 104 is described as follows: The first cylindrical receiving groove 104 has a cylindrical surface, which is the side surface of a cylinder. When a portion of the cylindrical battery cell 20 is housed in the first cylindrical receiving groove 104, the cylindrical surface of the cylindrical battery cell 20 contacts the cylindrical surface (contact surface) of the first cylindrical receiving 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 receiving groove 104. The first insulating limiting strip 131 can simultaneously make tangential contact with the cylindrical surfaces of two adjacent rows of multiple cylindrical battery cells 20 along a first direction.

[0103] The first cylindrical receiving groove 104 is used to adapt to 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 receiving cavity 101 to avoid or reduce the displacement of the cylindrical battery cells 20.

[0104] According to some embodiments of this application, optionally, at least one insulating limiting strip 13 includes a first insulating limiting strip 131, the first insulating limiting strip 131 having a second cylindrical receiving groove 132, a third cylindrical receiving groove 133, and a fourth cylindrical receiving groove 134. In two adjacent rows of cylindrical battery cells 20 along a first direction, two adjacent cylindrical battery cells 20 in one row are respectively partially received in the second cylindrical receiving groove 132 and the third cylindrical receiving groove 133 along a third direction, and one cylindrical battery cell 20 in the other row is partially received in the fourth cylindrical receiving groove 134, the third direction, the first direction, and the second direction being perpendicular to each other.

[0105] Please combine Figure 5 and Figure 6 All insulating limit strips 13 are first insulating limit strips 131. Optionally, please refer to... Figure 12 The second cylindrical receiving groove 132, the third cylindrical receiving groove 133 and the fourth cylindrical receiving groove 134 have the same shape, thus the manufacturing process is simple and efficient.

[0106] A first insulating limiting strip 131 can limit three cylindrical battery cells 20 respectively: two of the 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 same row of cylindrical battery cells 20 along the first direction.

[0107] The structural descriptions of the second cylindrical receiving groove 132, the third cylindrical receiving groove 133, and the fourth cylindrical receiving groove 134 can refer to the structural description of the first cylindrical receiving groove 104 described above, and will not be elaborated here. Optionally, the radii of the cylinders corresponding to the second cylindrical receiving groove 132, the third cylindrical receiving groove 133, and the fourth cylindrical receiving groove 134 are the same and equal to the radius of the cylindrical battery cell 20.

[0108] The second cylindrical receiving groove 132, the third cylindrical receiving groove 133, and the fourth cylindrical receiving groove 134 of the first insulating limiting strip 131 can limit the movement of 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 it is easy to replace individual cylindrical battery cells 20 after assembly. In addition, the first insulating limiting strip 131, which limits the movement of a smaller number of cylindrical battery cells 20, can reduce maintenance costs when replacing them.

[0109] It is understood that in other embodiments, the structure of the insulating limiting strip 13 may be other structures, and is not limited to the structure of the first insulating limiting strip 131, and no specific limitation is made here.

[0110] According to some embodiments of this application, optionally, at least one insulating limiting strip 13 includes a second insulating limiting strip 135, the second insulating limiting strip 135 being provided with a fifth cylindrical receiving groove 136, a sixth cylindrical receiving groove 137, a seventh cylindrical receiving groove 138 and an eighth cylindrical receiving groove 139. In two adjacent rows of cylindrical battery cells 20 along the first direction, two adjacent cylindrical battery cells 20 in one row are partially housed in the fifth cylindrical surface receiving groove 136 and the sixth cylindrical surface receiving groove 137 along the third direction, respectively. Two adjacent cylindrical battery cells 20 in the other row are partially housed in the seventh cylindrical surface receiving groove 138 and the eighth cylindrical surface receiving groove 139 along the third direction, respectively. The third direction, the first direction, and the second direction are perpendicular to each other.

[0111] Please combine Figure 7 and Figure 8 All insulating limit strips 13 are second insulating limit strips 135. Optionally, please refer to... Figure 15 The fifth cylindrical receiving groove 136 and the eighth cylindrical receiving groove 139 have the same shape, and the sixth cylindrical receiving groove 137 and the seventh cylindrical receiving groove 138 have the same shape. Therefore, the manufacturing process is simple and efficient.

[0112] A second insulating limiting strip 135 can limit the four cylindrical battery cells 20 respectively: two of the cylindrical battery cells 20 are two adjacent cylindrical battery cells 20 in the same row of cylindrical battery cells 20, and the other two cylindrical battery cells 20 are two adjacent cylindrical battery cells 20 in another row of cylindrical battery cells 20 adjacent to the same row of cylindrical battery cells 20 along the first direction.

[0113] The structural descriptions of the fifth cylindrical receiving groove 136, the sixth cylindrical receiving groove 137, the seventh cylindrical receiving groove 138, and the eighth cylindrical receiving groove 139 can refer to the structural description of the first cylindrical receiving groove 104 described above, and will not be elaborated here. Optionally, the radii of the cylinders corresponding to the fifth cylindrical receiving groove 136, the sixth cylindrical receiving groove 137, the seventh cylindrical receiving groove 138, and the eighth cylindrical receiving groove 139 are the same and equal to the radius of the cylindrical battery cell 20. The second insulating limiting strip 135 can simultaneously make tangential contact with the cylindrical surfaces of two adjacent rows of multiple cylindrical battery cells 20 along the first direction.

[0114] The fifth cylindrical receiving groove 136, the sixth cylindrical receiving groove 137, the seventh cylindrical receiving groove 138, and the eighth cylindrical receiving groove 139 of the second insulating limiting strip 135 can limit the four cylindrical battery cells 20 in contact with the second insulating limiting strip 135, avoiding or reducing the displacement of the cylindrical battery cells 20. Optionally, in one embodiment, compared with the first insulating limiting strip 131, the cylindrical surface (contact surface) sector angle of the fifth cylindrical receiving groove 136, the sixth cylindrical receiving groove 137, the seventh cylindrical receiving groove 138, and the eighth cylindrical receiving groove 139 in the second insulating limiting strip 135 is larger, which maximizes space utilization, makes the battery structure more stable, and increases strength. Furthermore, a second insulating limiting strip 135 can limit more cylindrical battery cells 20. When limiting 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. To further improve installation efficiency, the second insulating limiting strip 135 can be designed to span more cylindrical battery cells 20.

[0115] It is understood that in other embodiments, the structure of the insulating limiting strip 13 may be other than the structure of the second insulating limiting strip 135, and no specific limitation is made here. In other embodiments, the insulating limiting strip 13 may include the first insulating limiting strip 131 and the second insulating limiting strip 135, and may also include insulating limiting strips 13 with other structures, which are not specifically limited in this application.

[0116] According to some embodiments of this application, optionally, the second insulating limiting strip 135 is provided with a ninth cylindrical receiving groove 140 and a tenth cylindrical receiving groove 141; In two adjacent rows of cylindrical battery cells 20 along the first direction, three adjacent cylindrical battery cells 20 in one row are respectively housed in the fifth cylindrical receiving groove 136, the sixth cylindrical receiving groove 137 and the tenth cylindrical receiving groove 141 in a partially corresponding manner along the third direction. Three adjacent cylindrical battery cells 20 in the other row are respectively housed in the ninth cylindrical receiving groove 140, the seventh cylindrical receiving groove 138 and the eighth cylindrical receiving groove 139 in a partially corresponding manner along the third direction.

[0117] Please combine Figure 15 Optionally, the ninth cylindrical receiving groove 140 and the tenth cylindrical receiving groove 141 have the same shape, thereby simplifying the manufacturing process and increasing efficiency.

[0118] In this embodiment, a second insulating limiting strip 135 can limit the 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 same row of cylindrical battery cells 20 along the first direction.

[0119] The structural descriptions of the ninth cylindrical receiving groove 140 and the tenth cylindrical receiving groove 141 can refer to the structural description of the first cylindrical receiving groove 104 described above, and will not be elaborated here. Optionally, the cylinders corresponding to the fifth cylindrical receiving groove 136, the sixth cylindrical receiving groove 137, the seventh cylindrical receiving groove 138, the eighth cylindrical receiving groove 139, the ninth cylindrical receiving groove 140, and the tenth cylindrical receiving groove 141 have the same radius, which is equal to the radius of the cylindrical battery cell 20.

[0120] The fifth cylindrical receiving groove 136, the sixth cylindrical receiving groove 137, the seventh cylindrical receiving groove 138, the eighth cylindrical receiving groove 139, the ninth cylindrical receiving groove 140, and the tenth cylindrical receiving groove 141 can limit the movement of the six cylindrical battery cells 20 that are in contact with the second insulating limiting strip 135, thereby preventing or reducing the displacement of the cylindrical battery cells 20. In addition, one second insulating limiting strip 135 can limit more cylindrical battery cells 20. When limiting the same number of cylindrical battery cells 20, the number of insulating limiting strips 13 used can be reduced, the installation time can be shortened, the installation efficiency can be improved, and the cost can be reduced.

[0121] According to some embodiments of this application, optionally, the fifth cylindrical receiving groove 136, the sixth cylindrical receiving groove 137 and the tenth cylindrical receiving groove 141 are arranged sequentially along a third direction, and the sector angles of the sixth cylindrical receiving groove 137, the fifth cylindrical receiving groove 136 and the tenth cylindrical receiving groove 141 decrease sequentially.

[0122] The ninth cylindrical receiving groove 140, the seventh cylindrical receiving groove 138 and the eighth cylindrical receiving groove 139 are arranged sequentially along the third direction, and the sector angles of the seventh cylindrical receiving groove 138, the eighth cylindrical receiving groove 139 and the ninth cylindrical receiving groove 140 decrease sequentially.

[0123] Please combine Figure 7 , Figure 8 and Figure 15In two adjacent second insulating limiting strips 135 in the same row, the tenth cylindrical receiving groove 141 of one second insulating limiting strip 135 and the fifth cylindrical receiving groove 136 of the other second insulating limiting strip 135 can jointly limit the same cylindrical battery cell 20 below. In two adjacent second insulating limiting strips 135 in the same row, the ninth cylindrical receiving groove 140 of one second insulating limiting strip 135 and the eighth cylindrical receiving groove 139 of the other second insulating limiting strip 135 can jointly limit the same cylindrical battery cell 20 above, with good limiting effect.

[0124] According to some embodiments of this application, optionally, the side of the baffle 14 facing the receiving cavity 101 is provided with a plurality of eleventh cylindrical receiving grooves 142. The plurality of eleventh cylindrical receiving grooves 142 are arranged at intervals along a third direction. A plurality of cylindrical battery cells 20 in a row that are in contact with the baffle 14 are respectively housed in the plurality of eleventh cylindrical receiving grooves 142 in a partially corresponding manner. The third direction and the first direction are perpendicular to each other.

[0125] exist Figure 6 and Figure 8 In the middle, the side of the baffle 14 facing the receiving cavity 101 is the bottom surface of the baffle 14. The third direction includes the B1-B2 direction. The eleventh cylindrical receiving groove 142 can limit the uppermost row of cylindrical battery cells 20. The third direction, the first direction and the second direction are perpendicular to each other.

[0126] The structural description of the eleventh cylindrical receiving groove 142 can be referred to the structural description of the first cylindrical receiving groove 104 mentioned above, and will not be elaborated here.

[0127] The eleventh cylindrical receiving groove 142 can limit the cylindrical battery cell 20 that contacts the baffle 14, thereby avoiding or reducing the displacement of the cylindrical battery cell 20.

[0128] According to some embodiments of this application, optionally, the sector angle of the cylindrical receiving groove is less than or equal to 180 degrees.

[0129] Specifically, the sector angle of the first cylindrical receiving groove 104 is less than or equal to 180 degrees, the sector angle of the second cylindrical receiving groove 132 is less than or equal to 180 degrees, the sector angle of the third cylindrical receiving groove 133 is less than or equal to 180 degrees, the sector angle of the fourth cylindrical receiving groove 134 is less than or equal to 180 degrees, the sector angle of the fifth cylindrical receiving groove 136 is less than or equal to 180 degrees, the sector angle of the sixth cylindrical receiving groove 137 is less than or equal to 180 degrees, the sector angle of the seventh cylindrical receiving groove 138 is less than or equal to 180 degrees, the sector angle of the eighth cylindrical receiving groove 139 is less than or equal to 180 degrees, the sector angle of the ninth cylindrical receiving groove 140 is less than or equal to 180 degrees, the sector angle of the tenth cylindrical receiving groove 141 is less than or equal to 180 degrees, and the sector angle of the eleventh cylindrical receiving groove 142 is less than or equal to 180 degrees.

[0130] Please combine Figure 10 For the first cylindrical surface receiving groove 104, the sector angle of the first cylindrical surface receiving groove 104 can be the angle T1 formed by the two lines connecting the two ends of the cylindrical surface along the circumference of the first cylindrical surface receiving groove 104 to the center of the corresponding cylinder.

[0131] The sector angle of the first cylindrical receiving groove 104 is less than or equal to 180 degrees. The relatively large opening angle of the first cylindrical receiving groove 104 facilitates the entry of the cylindrical battery cell 20 into the first cylindrical receiving groove 104, improving installation efficiency. The opening angle can be defined as the angle T2 between the two tangents at both ends of the cylindrical surface along the circumference of the first cylindrical receiving groove 104. The sum of angles T1 and T2 is 180 degrees.

[0132] According to some embodiments of this application, optionally, the sector angle of the cylindrical receiving groove is greater than 45 degrees.

[0133] Specifically, the sector angle of the first cylindrical receiving groove 104 is greater than 45 degrees and less than or equal to 180 degrees; the sector angle of the second cylindrical receiving groove 132 is greater than 45 degrees and less than or equal to 180 degrees; the sector angle of the third cylindrical receiving groove 133 is greater than 45 degrees and less than or equal to 180 degrees; the sector angle of the fourth cylindrical receiving groove 134 is greater than 45 degrees and less than or equal to 180 degrees; the sector angle of the fifth cylindrical receiving groove 136 is greater than 45 degrees and less than or equal to 180 degrees; and the sector angle of the sixth cylindrical receiving groove 137 is greater than 45 degrees and less than or equal to 180 degrees. The sector angles of the seventh cylindrical surface receiving groove 138, the eighth cylindrical surface receiving groove 139, the ninth cylindrical surface receiving groove 140, the tenth cylindrical surface receiving groove 141, and the eleventh cylindrical surface receiving groove 142 are all greater than 45 degrees and less than or equal to 180 degrees.

[0134] The sector angle of the cylindrical receiving groove is greater than 45 degrees and less than or equal to 180 degrees. The groove opening angle of the cylindrical receiving 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.

[0135] In some examples, the sector angle of the cylindrical receiving groove disclosed in this application may 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 in this regard.

[0136] According to some embodiments of this application, optionally, the accommodating cavity 101 is provided with a plurality of first cylindrical surface limiting portions 105 and a plurality of second cylindrical surface limiting portions 106 on at least one side wall along a third direction. The first cylindrical surface limiting portions 105 and the second cylindrical surface limiting portions 106 are alternately arranged on the same side wall along a first direction, and the third direction, the first direction and the second direction are perpendicular to each other.

[0137] The first cylindrical surface limiting part 105 limits the insulating limiting strip 13 that is in contact with the first cylindrical surface limiting part 105 along a third direction, and the second cylindrical surface limiting part 106 limits the cylindrical battery cell 20 that is in contact with the second cylindrical surface limiting part 106 along a third direction.

[0138] exist Figure 6 and Figure 8 In the first direction, the third direction includes the B1-B2 direction. The accommodating cavity 101 has multiple first cylindrical surface limiting portions 105 and multiple second cylindrical surface limiting portions 106 on both sidewalls along the third direction. On each sidewall, the first cylindrical surface limiting portions 105 and the second cylindrical surface limiting portions 106 are alternately arranged along the first direction. For ease of explanation, 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.

[0139] In one embodiment, when installing the cylindrical battery cells 20 and the insulating limiting strips 13, the frame 102 is placed with the opening 103 facing upwards. First, multiple cylindrical battery cells 20 are inserted, forming a first row of cylindrical battery cells 20 on the bottom surface of the receiving cavity 101. Then, a first row of insulating limiting strips 13 is placed on the first row of cylindrical battery cells 20, separating adjacent cylindrical battery cells 20. Next, a second row of cylindrical battery cells 20 is placed on the first row of insulating limiting strips 13, and so on. No insulating limiting strips 13 are needed above the last row of cylindrical battery cells 20. Finally, a baffle 14 is placed on the frame 102, covering the opening 103, and mechanically pre-fixed or mechanically fixed.

[0140] The insulating limiting strip 13 that contacts the first cylindrical surface limiting part 105 is the insulating limiting strip 13 closest to the side wall in a row of insulating limiting strips 13, and the cylindrical battery cell 20 that contacts the second cylindrical surface limiting part 106 is the cylindrical battery cell 20 closest to the side wall in a row of cylindrical battery cells 20.

[0141] 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... Figure 6 and Figure 8 On the second sidewall 108, the lowest part is the first cylindrical surface limiting part 105, and along the upward direction of the first direction (such as the A1 direction), the first cylindrical surface limiting part 105 and the second cylindrical surface limiting part 106 are alternately arranged. On the first sidewall 107, due to the presence of the first cylindrical surface receiving groove 104, the lowest part is the first cylindrical surface limiting part 105, and along the upward direction of the first direction (such as the A1 direction), the first cylindrical surface limiting part 105 and the second cylindrical surface limiting part 106 are alternately arranged. In other embodiments, if the first cylindrical surface receiving groove 104 is not present, the lowest part is the second cylindrical surface limiting part 106, and along the upward direction of the first direction (such as the A1 direction), the second cylindrical surface limiting part 106 and the first cylindrical surface limiting part 105 are alternately arranged.

[0142] For the odd-numbered rows of cylindrical battery cells 20, the cylindrical battery cells 20 in contact with the second cylindrical surface limiting portion 106 on the first sidewall 107 are limited. Please refer to... Figure 6 and Figure 8When 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 cylindrical battery cells 20 in contact with the second cylindrical surface limiting part 106 on the first side wall 107 are limited. For the even-numbered rows of cylindrical battery cells 20, the cylindrical battery cells 20 in contact with the second cylindrical surface limiting part 106 on the second side wall 108 are limited. For the odd-numbered rows of insulating limiting strips 13, the insulating limiting strips 13 in contact with the first cylindrical surface limiting part 105 on the second side wall 108 are limited. For the even-numbered rows of insulating limiting strips 13, the insulating limiting strips 13 in contact with the first cylindrical surface limiting part 105 on the first side wall 107 are limited.

[0143] In another embodiment, on the second sidewall 108, the lowest part is the second cylindrical surface limiting portion 106, and along the upward direction of the first direction (such as the A1 direction), the second cylindrical surface limiting portion 106 and the first cylindrical surface limiting portion 105 are alternately arranged in sequence; on the first sidewall 107, the lowest part is the first cylindrical surface limiting portion 105, and along the upward direction of the first direction (such as the A1 direction), the first cylindrical surface limiting portion 105 and the second cylindrical surface limiting portion 106 are alternately arranged in sequence. The limiting effect of the first cylindrical surface limiting portion 105 on the insulating limiting strip 13 and the limiting effect of the second cylindrical surface limiting portion 106 on the cylindrical battery cell 20 can be referred to the description of the above embodiment, and will not be elaborated here.

[0144] The insulating limiting strip 13, which is in contact with the first cylindrical surface limiting part 105, is limited by the first cylindrical surface limiting part 105, and the cylindrical battery cell 20, which is in contact with the second cylindrical surface limiting part 106, is limited by the second cylindrical surface limiting part 106. With the combined effect of the gravity of the insulating limiting strip 13 and the cylindrical battery cell 20 itself, and the gravity of the insulating limiting strip 13 and the cylindrical battery cell 20 above, the fit between the cylindrical battery cell 20 and the insulating limiting strip 13 can be made tighter automatically, and the installation is simple.

[0145] exist Figure 6 and Figure 8 In the first cylindrical surface limiting portion 105, a cylindrical surface protrudes from the side wall of the receiving cavity 101 into the receiving cavity 101. The cylindrical surface is the side surface of a cylinder, and the first cylindrical surface limiting portion 105 can be formed as a convex bulge. When the first cylindrical surface limiting portion 105 limits the insulating limiting strip 13, the cylindrical surface of one cylindrical receiving groove of the insulating limiting strip 13 contacts the cylindrical surface of the first cylindrical surface limiting 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 surface limiting portion 105.

[0146] The second cylindrical surface limiting portion 106 has a cylindrical surface that is recessed from the inside of the accommodating cavity 101 outwards. The cylindrical surface is the side surface of a cylinder, and the second cylindrical surface limiting portion 106 may have a recess. When the second cylindrical surface limiting portion 106 is in contact with the cylindrical battery cell 20, the cylindrical surface of the cylindrical battery cell 20 contacts the cylindrical surface of the second cylindrical surface limiting portion 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 limiting portion 106.

[0147] According to some embodiments of this 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 lines formed by the two ends of the cylindrical surface along the circumference of the cylindrical surface limiting portion and the corresponding center of the cylinder. Please refer to... Figure 11 The sector angle of the first cylindrical surface limiting part 105 is included angle T3, which is less than or equal to 180 degrees, and the sector angle of the second cylindrical surface limiting part 106 is included angle T4, which is less than or equal to 180 degrees.

[0148] According to some embodiments of this application, optionally, the distance between the lowermost end of the first cylindrical surface limiting portion 105 and the center of the lower cylindrical battery cell 20 is L, where L>R+d, R is the radius of the cylindrical battery cell 20, and d is a safety margin. Along the first direction, the transition boundary G below the first cylindrical surface limiting portion 105 is located outside the first virtual circle R1. The first virtual circle R1 is defined as: a virtual circle whose radius is equal to the radius of the cylindrical battery cell 20, which is tangent to the tangent T of the cylindrical surface vertex of the second cylindrical surface limiting portion 106 located below the first cylindrical surface limiting portion 105 along the first direction and passes through the lowermost end of the first cylindrical surface limiting portion 105. This allows the cylindrical battery cell 20 to be installed at least downward along the first direction or along the second direction.

[0149] Please combine Figure 9 On the second sidewall 108, the lowest part is the first cylindrical surface limiting part 105. Along the A1 direction, the first cylindrical surface limiting part 105 and the second cylindrical surface limiting part 106 are alternately arranged. Below the first cylindrical surface limiting part 105, which contacts the insulating limiting strip 13 of the third row of insulating limiting strips 13, is a cylindrical battery cell 20 (hereinafter referred to as E-cylindrical battery cell 20). If the sector angle of the first cylindrical surface limiting part 105 is too large, it may cause difficulties in installing the E-cylindrical battery cell 20 below. Figure 9As shown in the auxiliary illustration, when the sector angle of the first cylindrical surface limiting 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 the cylindrical battery cells 20 in the same row is not affected by the placement order and to maximize ease of installation, the distance between the lowest point of the first cylindrical surface limiting portion 105 and the center of the lower cylindrical battery cell 20 is L (which can also be understood as the distance between the center of the E cylindrical battery cell 20 and the lowest point of the upper first cylindrical surface limiting portion 105 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 limiting portion 105. This ensures that the E cylindrical battery cell 20 can be installed downwards at least along the first direction. Figure 8 The direction shown in A2; or it can be installed along the second direction.

[0150] According to some embodiments of this application, optionally, under the condition of satisfying the mechanical strength of the first cylindrical surface limiting part 105, the arrangement of cylindrical battery cells in the same row is less affected by the arrangement order, and the installation is made more convenient, d>R×1 / 3.

[0151] Along the first direction, the transition boundary G below the first cylindrical surface limiting part 105 is located outside the first virtual circle R1. The first virtual circle R1 is defined as: a virtual circle whose radius is equal to the radius of the cylindrical battery cell 20, which is tangent to the tangent T of the cylindrical surface vertex of the second cylindrical surface limiting part 106 located below the first cylindrical surface limiting part 105 along the first direction, passes through the lowest end of the first cylindrical surface limiting part 105, and is tangent to the tangent T of the tangent T of the cylindrical surface limiting part 106 located below the first cylindrical surface limiting part 105.

[0152] The vertex of the cylindrical surface of the second cylindrical surface limiting part 106 can be a point on one end of the cylindrical surface of the second cylindrical surface limiting part 106 along the circumferential direction. This end is the end of the cylindrical surface of the second cylindrical surface limiting part 106 that is closer to the upper first cylindrical surface limiting part 105 among the two ends of the cylindrical surface of the second cylindrical surface limiting part 106 along the circumferential direction.

[0153] The transition boundary G connects the lowermost end of the first cylindrical surface limiting part 105 and the vertex of the adjacent lower second cylindrical surface limiting part 106.

[0154] Optionally, according to some embodiments of this application, please refer to Figures 12 to 15 The insulating limiting strip 13 includes an opening 15 that penetrates at least one side of the insulating limiting strip 13 along its length.

[0155] Optionally, in Figure 2In this embodiment, the length direction of the insulating limiting strip 13 is along a second direction, which includes the C1-C2 direction. The opening 15 penetrates both sides of the insulating limiting strip 13 along the second direction, and is a through hole extending through the insulating limiting strip 13 along the second direction. It is understood that in other embodiments, the opening 15 may penetrate one side of the insulating limiting strip 13 along the second direction; for example, the opening 15 may penetrate one side of the insulating limiting strip 13 along the C1 direction, or the opening 15 may penetrate one side of the insulating limiting strip 13 along the C2 direction. This application does not limit this to any particular embodiment.

[0156] This application does not specifically limit the shape and number of openings 15 in an insulating limiting strip 13. Optionally, the shape of the opening 15 is cylindrical, and the number of openings 15 in an insulating limiting strip 13 is one.

[0157] The opening 15 helps to reduce the weight of the insulating limiting strip 13, thereby saving material. The material that falls off due to the opening 15 can be reused, which also reduces the cost of the insulating limiting strip 13.

[0158] According to some embodiments of this application, optionally, the battery 100 includes a heat-conducting element 16, which is at least partially located within the opening 15.

[0159] Optionally, in Figure 13 In the middle, the opening 15 passes through the insulating limiting strip 13 along the second direction, and the heat-conducting element 16 is inserted into the opening 15. The two ends of the heat-conducting element 16 extend out of the opening 15 along the second direction. The heat received by the heat-conducting element 16 is transferred to the two ends, and then the heat is dissipated from the two ends.

[0160] This application does not specifically limit the material of the heat-conducting element 16. Optionally, the heat-conducting element 16 can be a thermal superconductor, such as a heat pipe, a thermally conductive graphite rod, etc. Optionally, the shape of the heat-conducting element 16 is adapted to the shape of the opening 15, and the heat-conducting element 16 located in the opening 15 is in contact with the wall of the opening 15 to improve the heat conduction efficiency.

[0161] When the cylindrical battery cell 20 generates heat, the heat from the cylindrical battery cell 20 can be transferred to the heat-conducting component 16 through the insulating limiting strip 13. The heat is then transferred from the middle of the heat-conducting component 16 to both ends of the heat-conducting component 16 for dissipation, effectively cooling the cylindrical battery cell 20.

[0162] According to some embodiments of this application, optionally, the battery 100 includes a structural reinforcement 17, which is at least partially located within the opening 15, and the stiffness of the structural reinforcement 17 is greater than the stiffness of the insulating limiting strip 13.

[0163] Optionally, in Figure 14In the middle, the opening 15 penetrates the insulating limiting strip 13 along the second direction, and the structural reinforcement 17 can be at least partially located within the opening 15. Specifically, both ends of the structural reinforcement 17 along the second direction can extend out of the opening 15, be flush with the port of the opening 15, or be located within the opening 15. Figure 14 In the middle, the two ends of the structural reinforcement 17 along the second direction are flush with the port of the opening 15.

[0164] 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 limit strip 13.

[0165] In one embodiment, the insulating limiting strip 13 is made of plastic, and the structural reinforcement 17 is made of metal. The plastic insulating limiting strip 13 has low stiffness and is easily damaged by the cylindrical battery cell 20. The metal structural reinforcement 17 has high stiffness, which can increase the stiffness of the insulating limiting strip 13 and extend its service life.

[0166] According to some embodiments of this application, this application also provides a method for assembling battery cells into groups, including: A frame 102 is provided, and a receiving cavity 101 is provided inside the frame 102. An opening 103 communicating with the receiving cavity 101 is provided on one side of the frame 102. Multiple cylindrical battery cells 20 are inserted into the receiving cavity 101 through the opening 103, and at least one insulating limiting strip 13 is inserted into the receiving cavity 101 through the opening 103, so that the multiple cylindrical battery cells 20 are arranged at intervals, and adjacent cylindrical battery cells 20 are separated and limited by at least one insulating limiting strip 13.

[0167] exist Figures 5 to 8 In the frame 102, an opening 103 communicating with the accommodating cavity 101 is provided on the upper side along the direction of gravity. The direction of gravity is A2, and the opening 103 faces the A1 direction, that is, the opening 103 is set upward.

[0168] Optionally, when assembling multiple cylindrical battery cells 20, the multiple cylindrical battery cells 20 can be inserted into the receiving cavity 101 through the opening 103 in an orientation where the length direction of the cylindrical battery cell 20 is not parallel to the direction of gravity. Optionally, when assembling the insulating limiting strip 13, the insulating limiting strip 13 can be inserted into the receiving cavity 101 through the opening 103 in an orientation where the length direction of the insulating limiting strip 13 is not parallel to the direction of gravity. Non-parallelism can include tilting and perpendicularity. Optionally, during installation, the cylindrical battery cells 20 are inserted into the receiving cavity 101 through the opening 103 in an orientation where the length direction of the cylindrical battery cell 20 is perpendicular to the direction of gravity, and the insulating limiting strip 13 is inserted into the receiving cavity 101 through the opening 103 in an orientation where the length direction of the insulating limiting strip 13 is perpendicular to the direction of gravity, so that the multiple cylindrical battery cells 20 are spaced apart along the direction of gravity.

[0169] Optionally, the cylindrical battery cell 20 and the insulating limiting strip 13 can be installed into the receiving cavity 101 using equipment such as a robotic arm or robot; this application does not specifically limit this. Optionally, the frame 102 can be fixed by fasteners during the assembly process.

[0170] According to some embodiments of this 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 cylindrical battery cell 20 in contact with the baffle 14.

[0171] The baffle 14 can limit and fix the cylindrical battery cell 20 closest to the opening 103, thereby enabling all cylindrical battery cells 20 in the accommodating cavity to be more effectively limited.

[0172] Specifically, the assembly process of the cylindrical battery cells 20 includes: First, placing the frame 102 with the opening 103 facing upwards; Second, placing the first row of cylindrical battery cells 20 into the first cylindrical receiving groove 104 on the bottom surface of the receiving cavity 101; Third, placing the first row of insulating limiting strips 13 between the first row of cylindrical battery cells 20; Fourth, placing the second row of cylindrical battery cells 20 onto the first row of insulating limiting strips 13; Fifth, placing the second row of insulating limiting strips 13 between the second row of cylindrical battery cells 20, and so on. The last row of cylindrical battery cells 20 does not need to have insulating limiting strips 13 placed on top; Finally, placing the baffle 14 and performing mechanical pre-fixing or mechanical fixing.

[0173] During the assembly process, the cylindrical battery cells 20 and the insulating limiting strips 13 have low positional accuracy requirements. After placement, they will automatically correct themselves to the most stable position under the action of gravity, exhibiting self-adaptability and self-stability in arrangement. The positions of the cylindrical battery cells 20 and the insulating limiting strips 13 are reliable. As more and more cylindrical battery cells 20 and insulating limiting strips 13 are added, the fit between the cylindrical battery cells 20 and the insulating limiting strips 13 automatically becomes tighter and tighter, making installation simple and efficient.

[0174] According to some embodiments of this application, this application also provides an electrical device including a battery 100 of any of the above schemes, and the battery 100 is used to provide electrical energy to the electrical device.

[0175] The electrical device can be a device or system that uses any of the aforementioned batteries 100.

[0176] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, characterized in that, include: A frame, wherein a receiving cavity is provided within the frame, and an opening communicating with the receiving cavity is provided on one side of the frame along a first direction; Multiple cylindrical battery cells are housed in the accommodating cavity; At least one insulating limiting strip is disposed in the receiving cavity, and two adjacent cylindrical battery cells are separated and limited by at least one insulating limiting strip; 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, adjacent rows of cylindrical battery cells along the first direction are separated and limited by at least one of the insulating limiting strips, and / or, adjacent two cylindrical battery cells in the same row are separated and limited by at least one of the insulating limiting strips, the second direction and the first direction are perpendicular to each other; The at least one insulating limiting strip includes a first insulating limiting strip, the first insulating limiting strip being provided with a second cylindrical receiving groove, a third cylindrical receiving groove and a fourth cylindrical receiving groove; In two adjacent rows of cylindrical battery cells along the first direction, two adjacent cylindrical battery cells in one row are respectively partially housed in the second cylindrical surface receiving groove and the third cylindrical surface receiving groove along the third direction, and one cylindrical battery cell in the other row is partially housed in the fourth cylindrical surface receiving groove. The third direction, the first direction and the second direction are perpendicular to each other.

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

3. The battery according to claim 1, characterized in that, The at least one insulating limiting strip includes multiple insulating limiting strips, which are arranged in a row along a third direction. The adjacent rows of cylindrical battery cells along the first direction are limited by a row of insulating limiting strips. The third direction, the first direction, and the second direction are perpendicular to each other.

4. The battery according to claim 1, characterized in that, The bottom surface of the accommodating cavity is provided with a plurality of first cylindrical receiving grooves, which are arranged at intervals along a third direction. The length direction of the first cylindrical receiving grooves is along the second direction. A plurality of cylindrical battery cells in a row closest to the bottom surface of the accommodating cavity are respectively housed in the plurality of first cylindrical receiving grooves in a partially corresponding manner. The third direction, the first direction and the second direction are perpendicular to each other.

5. The battery according to any one of claims 1 to 4, characterized in that, The battery includes a baffle plate, which is fixedly connected to the side of the frame with the opening and covers the opening. The baffle plate limits the position of the cylindrical battery cell that contacts the baffle plate.

6. The battery according to claim 5, characterized in that, The baffle has a plurality of eleventh cylindrical receiving slots on its side facing the receiving cavity. The plurality of eleventh cylindrical receiving slots are arranged at intervals along a third direction. A plurality of cylindrical battery cells in a row that are in contact with the baffle are respectively housed in the plurality of eleventh cylindrical receiving slots in a one-to-one correspondence manner. The third direction is perpendicular to the first direction.

7. The battery according to claim 1, characterized in that, The sector angle of the cylindrical receiving groove is less than or equal to 180 degrees.

8. The battery according to claim 7, characterized in that, The sector angle of the cylindrical receiving groove is greater than 45 degrees.

9. The battery according to claim 1, characterized in that, The accommodating cavity is provided with a plurality of first cylindrical surface limiting parts and a plurality of second cylindrical surface limiting parts on at least one side wall along the third direction. The first cylindrical surface limiting parts and the second cylindrical surface limiting parts are alternately arranged on the same side wall along the first direction. The third direction is perpendicular to the first direction. The first cylindrical surface limiting portion limits the insulating limiting strip that is 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 that is in contact with the second cylindrical surface limiting portion along the third direction.

10. The battery according to claim 9, characterized in that, The distance between the lowest point of the first cylindrical surface limiting part and the center of the cylindrical battery cell below it 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 limiting part is located outside the first virtual circle. The first virtual circle is defined as: a virtual circle whose radius is equal to the radius of the cylindrical battery cell, which is tangent to the tangent line of the cylindrical vertex of the second cylindrical surface limiting part located below the first cylindrical surface limiting part along the first direction, and passes through the lowest point of the first cylindrical surface limiting part.

11. The battery according to claim 10, characterized in that, d>R×1 / 3.

12. The battery according to claim 1, characterized in that, The insulating limiting strip includes an opening that penetrates at least one side of the insulating limiting strip along its length.

13. The battery according to claim 12, characterized in that, The battery includes a thermally conductive element, which is at least partially located within the opening.

14. The battery according to claim 12, characterized in that, The battery includes a structural reinforcement member, which is at least partially located within the opening, and the stiffness of the structural reinforcement member is greater than the stiffness of the insulating limiting strip.

15. A method for assembling battery cells into a group, characterized in that, The grouping method is used to form the battery according to any one of claims 1-14, comprising: A frame is provided, the frame having a receiving cavity, and one side of the frame having an opening communicating with the receiving cavity; Multiple cylindrical battery cells are inserted into the receiving cavity through the opening, and at least one insulating limiting strip is inserted into the receiving cavity through the opening, so that the multiple cylindrical battery cells are arranged at intervals, and adjacent cylindrical battery cells are separated and limited by at least one insulating limiting strip.

16. The grouping method according to claim 15, characterized in that, The grouping method includes: The baffle is connected to the upper side of the frame and covers the opening, so that the baffle limits the cylindrical battery cell that contacts the baffle.

17. An electrical device, characterized in that, Includes the battery according to any one of claims 1-14, the battery being used to provide electrical energy.

Images