Support assembly, battery monomer assembly, battery device and power utilization device

Abstract

The utility model discloses a support assembly, a battery monomer assembly, a battery device and a power utilization device, and relates to the technical field of batteries, a battery monomer is cylindrical, one end of the battery monomer in the axial direction is provided with an annular first pole, and the support assembly comprises a support suitable for being rotatably arranged on the battery monomer around the axis of the battery monomer, a protection part is arranged on the bracket; and the electric connecting piece is provided with a first connecting part, the first connecting part is suitable for being connected with the first pole, and the bracket is suitable for rotating relative to the battery monomer, so that the protection part covers at least part of the first connecting part. According to the battery monomer assembly provided by the invention, after the electric connecting piece is connected with the first pole, the bracket is rotated to enable the protection part to cover the first connecting part, so that the first connecting part can be protected, the probability that the first connecting part is damaged or the first connecting part is wrongly overlapped with other units is reduced, and the reliability of the battery device in the working process is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a bracket assembly, a battery cell assembly, a battery device, and an electrical device. Background Art

[0002] In a battery device, battery cells need to use electrical connectors to draw current from the poles. In related technologies, during the operation of the battery device, the connection between the electrical connector and the pole is prone to contact with other objects, causing damage to the electrical connector or even misconnection, affecting the reliability of the battery device. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a bracket assembly, a battery cell assembly, a battery device, and an electrical device including the battery device, wherein the battery cell assembly has high reliability during operation.

[0004] In a first aspect, an embodiment of the present application provides a bracket assembly for a battery cell, wherein the battery cell is cylindrical, and an annular first pole is provided at one axial end of the battery cell. The bracket assembly comprises: a bracket, wherein the bracket is suitable for being rotatably arranged on the battery cell around the axis of the battery cell, and the bracket is provided with a protective portion; an electrical connector, wherein the electrical connector is provided with a first connecting portion, and the first connecting portion is suitable for being connected to the first pole, and the bracket is suitable for rotating relative to the battery cell so that the protective portion covers at least a portion of the first connecting portion.

[0005] In the above technical method, according to the bracket assembly of the embodiment of the present application, after the electrical connector is connected to the first pole, the bracket is rotated so that the protective part covers the first connection part, which can protect the first connection part and reduce the probability of the first connection part being damaged or short-circuited with other units, thereby improving the reliability of the battery device during operation, and the operation during the production process is relatively simple.

[0006] In some embodiments, the first connecting portion is arc-shaped, and the first connecting portion is suitable for being coaxially arranged with the first pole.

[0007] In the above technical solution, by setting the first connecting portion to be in an arc shape, the first connecting portion can be adapted to the shape of the first pole, so that the connection area between the first connecting portion and the first pole can more easily meet the overcurrent requirement.

[0008] In some embodiments, a central angle between two ends of the first connecting portion is less than or equal to 180°.

[0009] In the above technical approach, on the premise that the area of ​​the first connection portion meets the flow requirement, the material usage of the first connection portion can be saved, which is beneficial to controlling production costs.

[0010] In some embodiments, the guard portion is arc-shaped and is suitable for being coaxially arranged with the first pole.

[0011] In the above technical approach, by providing the protective portion in an arc shape extending around the axis of the battery cell, the difficulty of product design and production can be reduced.

[0012] In some embodiments, in the circumferential direction of the first pole, the first pole is divided into a first part and a second part arranged in sequence, the first connecting portion is suitable for being connected to the first part, and the battery cell assembly further includes: a protective member, which is suitable for being connected to the second part.

[0013] In the above technical solution, by providing a protective member, the portion of the first pole that is not connected to the first connecting portion can be protected, thereby further improving the reliability of the battery device during operation.

[0014] In some embodiments, the protective member is arc-shaped, and is adapted to be coaxially arranged with the first pole. The first connecting portion is adapted to cover the first portion, and the protective member is adapted to cover the second portion.

[0015] In the above technical solution, the difficulty of positioning the protective member and the first connecting portion on the first pole can be reduced, and the protective effect of the protective member on the first pole can be improved.

[0016] In some embodiments, the electrical connector further includes: a connecting segment, one end of which is formed as a second connecting portion, the second connecting portion being used to connect to other units, and the other end of the connecting segment is formed with a folded edge, the folded edge being connected to the first connecting portion.

[0017] In the above technical solution, the electrical connector can avoid the bracket, so that the second connecting portion can extend from the bracket, and the structure of the electrical connector is relatively simple.

[0018] In some embodiments, the bracket is formed with a accommodating cavity with openings at both ends in a first direction, the two openings of the accommodating cavity are respectively a first opening and a second opening, the protective portion is arranged at the second opening and covers part of the second opening, the battery cell is provided with one end of the first pole suitable for extending into the accommodating cavity through the first opening, and the first connecting portion is suitable for extending into the accommodating cavity from the second opening and connecting to the first pole.

[0019] The above technical approach can reduce the difficulty of production and improve the stability of the battery cells in the battery device.

[0020] In some embodiments, the protective portion has a first edge, and in the circumferential direction of the second opening, the first edge is divided into a first section and a second section, the first section is connected to the edge of the second opening, and the second section is spaced apart from the edge of the second opening.

[0021] The above technical approach can improve the heat dissipation efficiency of the battery cell and is conducive to the lightweight design of the battery cell assembly.

[0022] In some embodiments, the first edge is in an arc shape, and a central angle between two ends of the first segment is greater than or equal to 25°.

[0023] In the above technical approach, the connection strength between the protective part and the bracket can meet the use requirements.

[0024] In some embodiments, a first accommodating groove extending along an arc line is formed on the inner peripheral wall of the accommodating cavity, the first accommodating groove is suitable for being coaxially arranged with the battery cell, and a portion of the first connecting portion extends into the first accommodating groove.

[0025] In the above technical approach, the difficulty of connecting the electrical connector to the first pole can be reduced, and the stability of the electrical connector on the battery cell can be improved.

[0026] In some embodiments, a second accommodating groove extending along a circular arc is formed on the inner wall of the accommodating cavity, and the second accommodating groove is suitable for being coaxially arranged with the battery cell. The battery cell assembly also includes: a protective member, and part of the protective member extends into the second accommodating groove.

[0027] In the above technical approach, the difficulty of installing the protective member on the battery cell can be reduced, and the stability of the protective member on the battery cell can be improved.

[0028] In some embodiments, a fixing groove surrounding the accommodating cavity is formed on the outer peripheral wall of the bracket.

[0029] In the above technical approach, the difficulty of fixing the battery cell can be reduced, and the reliability of the connection between the battery cell and other components can be improved.

[0030] In the second aspect, an embodiment of the present application provides a battery cell assembly, comprising: a bracket assembly according to an embodiment of the present application; a battery cell, wherein the battery cell is cylindrical, and an annular first pole is provided at one axial end of the battery cell, and the bracket is rotatably provided on the battery cell around the axis of the battery cell, and the first connecting portion is connected to the first pole.

[0031] In the above technical approach, according to the battery cell assembly of the embodiment of the present application, by providing the bracket assembly according to the embodiment of the present application, the reliability of the battery cell assembly during operation can be improved.

[0032] In some embodiments, the first connecting portion is in a sheet shape, and in a radially outward direction of the battery cell, the first connecting portion extends beyond the first electrode column.

[0033] In the above technical approach, by extending the first connection portion beyond the first pole, the degree of fit between the first connection portion and the first pole can be improved, and the connection area between the first connection portion and the first pole can be increased, thereby further improving the current carrying capacity of the first connection portion.

[0034] In some embodiments, the bracket assembly further includes a protective member, wherein the protective member extends beyond the first pole in a radially outward direction of the battery cell.

[0035] In the above technical approach, the protection area of ​​the protective element on the first pole can be increased, further improving the protection effect of the protective element on the first pole.

[0036] In some embodiments, a second pole is further provided on the radial inner side of the first pole, an insulating member is provided between the first pole and the second pole, and one of the first pole and the second pole is a positive pole, and the other is a negative pole.

[0037] The above technical approach can reduce the difficulty of arranging the battery cell assembly in the battery device and can also reduce the difficulty of producing the battery device.

[0038] In some embodiments, in the radial direction of the battery cell, a ratio of a size of the second pole to a size of the battery cell is greater than or equal to 0.5.

[0039] In the above technical approach, the flow area of ​​the second pole can meet the use requirements.

[0040] In a third aspect, an embodiment of the present application provides a battery device including a battery cell assembly according to an embodiment of the present application.

[0041] In the above technical approach, the battery device according to the embodiment of the present application can improve the reliability of the battery device during operation by providing the battery cell assembly according to the embodiment of the present application.

[0042] In a fourth aspect, an embodiment of the present application provides an electrical device, including: a battery device according to an embodiment of the present application.

[0043] In the above technical approach, the electrical device according to the embodiment of the present application can improve the reliability of the electrical device during operation by providing the battery device according to the embodiment of the present application.

[0044] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a schematic diagram of an electrical device according to an embodiment of the present application;

[0046] Figure 2 is a schematic diagram of a battery cell assembly according to an embodiment of the present application;

[0047] Figure 3 is a schematic diagram of a battery cell assembly according to an embodiment of the present application from another angle;

[0048] Figure 4 yes Figure 3 A cross-sectional view in the AA direction shown in FIG;

[0049] Figure 5 yes Figure 2 Exploded view of the battery cell assembly shown in .

[0050] Reference numerals:

[0051] 10000, electrical devices;

[0052] 1000. Battery device;

[0053] 100. Battery monomer assembly;

[0054] 10. Battery cell; 11. First electrode; 12. Second electrode;

[0055] 1. Bracket assembly;

[0056] 20. Electrical connector; 21. First connecting portion; 22. Connecting section; 221. Folding edge; 222. Second connecting portion;

[0057] 30. Bracket; 31. Protective portion; 311. First section; 312. Second section; 32. Accommodating cavity; 321. First accommodating groove; 322. Second accommodating groove; 33. Fixing groove;

[0058] 40. Protective parts. DETAILED DESCRIPTION

[0059] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0060] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0061] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0062] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0063] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0064] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

[0065] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application.

[0066] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0067] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include one or more battery cells. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or hybrid via a busbar.

[0068] The technical solutions described in the embodiments of the present application are applicable to various electrical devices that use battery devices, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0069] In a battery device, battery cells need to use electrical connectors to draw current from the poles. In related technologies, during the operation of the battery device, the connection between the electrical connector and the pole is prone to contact with other objects, causing damage to the electrical connector or even misconnection, affecting the reliability of the battery device.

[0070] Based on the above considerations, in order to improve the reliability of the battery device during operation, the applicant has conducted in-depth research and designed a battery cell assembly, in which a protective part is set on the bracket of the battery cell, and the bracket is rotatably connected to the battery cell. When the electrical connector is connected to the first pole, the bracket drives the protective part to rotate to avoid the electrical connector. After the electrical connector is connected to the first pole, the bracket drives the protective part to rotate so that the protective part covers the first connection part, thereby protecting the first connection part and improving the reliability of the battery device during operation.

[0071] The present application provides an electrical device that uses the battery device of the present disclosure as a power source. The electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, and the like. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the like.

[0072] Figure 1 is a schematic diagram of an electrical device according to an embodiment of the present application; Figure 2 is a schematic diagram of a battery cell assembly according to an embodiment of the present application; Figure 3 is a schematic diagram of a battery cell assembly according to an embodiment of the present application from another angle; Figure 4 yes Figure 3 A cross-sectional view in the AA direction shown in FIG; Figure 5 yes Figure 2 Exploded view of the battery cell assembly shown in .

[0073] Reference below Figure 1-Figure 5 The following describes a bracket assembly 1 according to an embodiment of the first aspect of the present application.

[0074] like Figure 2 and Figure 5 As shown, the bracket assembly 1 is used for a battery cell 10 . The battery cell 10 is cylindrical. An annular first pole 11 is provided at one axial end of the battery cell 10 . The bracket assembly 1 includes: a bracket 30 and an electrical connector 20 .

[0075] Specifically, the bracket 30 is suitable for being rotatably arranged on the battery cell 10 around the axis of the battery cell 10, and a protective portion 31 is provided on the bracket 30. The electrical connector 20 is provided with a first connecting portion 21, and the first connecting portion 21 is suitable for being connected to the first pole 11. The bracket 30 is suitable for rotating relative to the battery cell 10 so that the protective portion 31 covers at least part of the first connecting portion 21.

[0076] Among them, after the bracket assembly 1 is assembled on the battery cell 10, the protective part 31 can cover part of the first connecting part 21, and the protective part 31 can also cover the entire first connecting part 21. The first pole 11 can be a positive pole, and the first pole 11 can also be a negative pole. The electrical connector 20 can be used for the bus connection between the battery cell 10 and other battery cells 10, and the electrical connector 20 can also be connected to the output circuit to enable the battery cell 10 to output current to the outside.

[0077] During the production process of the battery cell assembly 100, the bracket 30 is first assembled to the battery cell 10, and then the bracket 30 is rotated so that the protective part 31 avoids the connection area of ​​the first connecting part 21 on the first pole 11, and then the first connecting part 21 and the first pole 11 are connected. Then, the bracket 30 is rotated so that the protective part 31 covers at least part of the first connecting part 21, and the posture of the electrical connector 20 is adjusted so that the electrical connector 20 can be connected to other units.

[0078] Therefore, during the production process of the battery cell assembly 100, the operation is relatively simple, and during the operation of the battery cell assembly 100, the protective part 31 can protect the first connection part 21, reducing the probability of foreign objects contacting the first connection part 21, thereby reducing the probability of the first connection part 21 being damaged or short-circuiting with other units.

[0079] According to the bracket assembly 1 of the first embodiment of the present application, after the electrical connector 20 is connected to the first pole 11, the bracket 30 is rotated so that the protective part 31 covers the first connection part 21, which can protect the first connection part 21 and reduce the probability of the first connection part 21 being damaged or short-circuited with other units, thereby improving the reliability of the battery device 1000 during operation and simplifying the operation during the production process.

[0080] In some embodiments, as Figure 2 and Figure 5 As shown, the first connecting portion 21 is arc-shaped, and the first connecting portion 21 is suitable for being coaxially arranged with the first pole 11 .

[0081] It is understood by those skilled in the art that the maximum current that can be carried by the first connection portion 21 is positively correlated with the area of ​​the first connection portion 21. By configuring the first connection portion 21 in an arc shape, the first connection portion 21 can be adapted to the shape of the first pole 11, making it easier for the connection area between the first connection portion 21 and the first pole 11 to meet overcurrent requirements.

[0082] In some embodiments, a central angle between two ends of the first connection portion 21 is less than or equal to 180°.

[0083] For example, the central angle between the two ends of the first connection portion 21 may be 180°, 170°, 160°, or 90°.

[0084] That is to say, the first connection part 21 is formed into a semi-ring when it is at its largest size. Therefore, on the premise that the area of ​​the first connection part 21 meets the flow requirement, the material usage of the first connection part 21 can be saved, which is beneficial to controlling production costs.

[0085] During product design, the central angle between the two ends of the first connection portion 21 and the axis of the battery cell 10 can be adjusted within the above-mentioned angle range to meet more product design requirements. Moreover, the difficulty of product design can be reduced under the premise of determining the angle range.

[0086] In some embodiments, as Figure 2 and Figure 5 As shown, the protection portion 31 is arc-shaped and is suitable for being coaxially arranged with the first pole 11 .

[0087] Exemplarily, the first connecting portion 21 is in an arc shape and is coaxially arranged with the first pole 11 .

[0088] After the first connection part 21 is connected to the first pole 11, the bracket 30 is rotated to drive the protective part 31 to rotate. During this process, the protective part 31 and the bracket 30 rotate coaxially, and the protective part 31 gradually covers the first connection part 21 in the circumferential direction of the battery cell 10. In this way, in the process of the protective part 31 gradually covering the first connection part 21, the protective part 31 and the first connection part 21 only produce relative position changes in the circumferential direction of the battery cell 10. During the product design process, it is easier to design the size of the protective part 31 and the position of the protective part 31 on the bracket 30, thereby reducing the difficulty of product design. During the process of the operator producing the battery cell assembly 100, the operator can more easily rotate the protective part 31 into place, thereby reducing the difficulty of production.

[0089] By providing the protection portion 31 in an arc shape extending around the axis of the battery cell 10 , the difficulty of product design and production can be reduced.

[0090] In some embodiments, as Figure 2-Figure 5 As shown, in the circumferential direction of the first pole 11, the first pole 11 is divided into a first part and a second part arranged in sequence, the first connecting portion 21 is suitable for connecting to the first part, and the bracket assembly further includes: a protective member 40, which is suitable for connecting to the second part.

[0091] That is, the protective member 40 is provided on a portion of the first pole 11 that is not connected to the first connecting portion 21 .

[0092] During the operation of the battery cell 10 , the entire first pole 11 is conductive. When a portion of the first pole 11 that is not connected to the first connecting portion 21 is connected to other cells, incorrect connection may still occur.

[0093] In this embodiment, by providing a protective member 40 on the second part, during the operation of the battery device 1000, the protective member 40 can shield the second part, preventing other units from damaging the second part and contacting the second part, thereby further reducing the probability of the first pole 11 being mistakenly connected with other units and improving the reliability of the battery device 1000 during operation.

[0094] In some embodiments, as Figure 5 As shown, the protective member 40 is arc-shaped and is suitable for being coaxially arranged with the first pole 11 , and the first connecting portion 21 is suitable for covering the first portion, and the protective member 40 is suitable for covering the second portion.

[0095] That is, after the bracket assembly 1 is assembled onto the battery cell 10, the protective member 40 and the first connecting portion 21 are joined to form an annular cover for the first pole 11. Thus, the rotation of the protective portion 31 and the first connecting portion 21 on the first pole 11 around the axis of the battery cell 10 does not affect the positioning of the protective portion 31 and the first connecting portion 21 on the first pole 11. During the process of positioning the protective member 40 and the first connecting portion 21 on the first pole 11, the protective member 40 and the first connecting portion 21 can be positioned on the first pole 11 by placing the annular form formed by the spliced ​​protective member 40 and the first connecting portion 21 on the second pole 12.

[0096] Thus, the difficulty of positioning the protective member 40 and the first connecting portion 21 on the first pole 11 can be reduced, and the protective effect of the protective member 40 on the first pole 11 can be improved.

[0097] In some embodiments, as Figure 2 and Figure 5 As shown, the electrical connector 20 also includes: a connecting section 22, one end of the connecting section 22 is formed as a second connecting portion 222, the second connecting portion 222 is used to connect to other units, and the other end of the connecting section 22 is formed with a folded edge 221, which is connected to the first connecting portion 21.

[0098] Exemplarily, the battery cell assembly 100 may include multiple battery cells 10, each battery cell assembly 100 is provided with a corresponding bracket assembly 1, the second connection portion 222 can be connected to the second pole 12 of other battery cells 10 to achieve convergence, and the second connection can also serve as the output end of the multiple battery cells 10 after convergence, and the sampling unit of the battery device 1000 is connected to the second connection portion 222.

[0099] By providing the folded edge 221 , the electrical connector 20 can avoid the bracket 30 during the production process, so that the second connection portion 222 can extend from the bracket 30 , and the structure of the electrical connector 20 is relatively simple.

[0100] In some embodiments, as Figure 2 、 Figure 4 and Figure 5 As shown, the bracket 30 is formed with a accommodating cavity 32 with openings at both ends in the first direction, the two openings of the accommodating cavity 32 are respectively a first opening and a second opening, the protective portion 31 is arranged at the second opening and covers the second opening, the battery cell 10 is provided with one end of the first pole 11 suitable for extending into the accommodating cavity 32 through the first opening, and the first connecting portion 21 is suitable for extending into the accommodating cavity 32 from the second opening and connecting to the first pole 11.

[0101] Exemplarily, after the bracket assembly 1 is assembled onto the battery cell 10 , the second connecting portion 222 extends out of the accommodating cavity 32 through the portion of the second opening that is not covered by the protective portion 31 .

[0102] During the production process, the bracket 30 can be installed on the battery cell 10 by sleeved on the battery cell 10 through the first opening, and the bracket 30 can be rotated around the axis of the battery cell 10. In this way, the operation is relatively simple and the production difficulty can be further reduced.

[0103] When multiple battery cells 10 converge, the bracket 30 can separate the multiple battery cells 10, thereby improving the heat dissipation efficiency of the battery cell assembly 100, and the bracket 30 limits the battery cell 10 around the circumference of the battery cell 10, which can improve the stability of the battery cell 10 in the battery device 1000.

[0104] In some embodiments, as Figure 2 and Figure 5 As shown, the protection portion 31 has a first edge, which is divided into a first section 311 and a second section 312 in the circumferential direction of the second opening. The first section 311 is connected to the edge of the second opening, and the second section 312 is spaced apart from the edge of the second opening.

[0105] That is to say, part of the protective portion 31 is separated from the edge of the second opening. Therefore, during the operation of the battery cell 10, on the one hand, the barrier of the protective plate to the heat transfer on the battery cell assembly 100 can be reduced, thereby improving the heat dissipation efficiency of the battery cell 10. On the other hand, the material usage of the battery cell assembly 100 can be reduced, which is conducive to the lightweight design of the battery cell assembly 100.

[0106] In some embodiments, the first edge is in an arc shape, and a central angle between two ends of the first segment 311 is greater than or equal to 25°.

[0107] For example, the central angle between the two ends of the first segment 311 may be 25°, 27°, 30°, or 45°.

[0108] In this way, the connection strength between the protective part 31 and the bracket 30 can meet the requirements of use. During the product design process, the central angle between the two ends of the first section 311 relative to the axis of the battery cell 10 can be adjusted within the above-mentioned angle range, so as to meet more product design needs. Moreover, under the premise of determining the angle range, the difficulty of product design can be reduced.

[0109] In some embodiments, as Figure 4 and Figure 5As shown, a first accommodating groove 321 extending along an arc line is formed on the inner peripheral wall of the accommodating cavity 32 . The first accommodating groove 321 is suitable for being coaxially arranged with the battery cell 10 , and part of the first connecting portion 21 extends into the first accommodating groove 321 .

[0110] For example, after the bracket assembly 1 is assembled onto the battery cell 10 , the portion of the first connection portion 21 that extends beyond the battery cell 10 in the radially outward direction of the battery cell 10 extends into the first receiving groove 321 .

[0111] During the production process, the first connecting part 21 is first extended into the first receiving groove 321 in the receiving cavity 32, and then the bracket 30 is placed on the battery cell 10, and the bracket 30 drives the protective part 31 to rotate, so that the protective part 31 avoids the first connecting part 21. After the first connecting part 21 is connected to the first pole 11, the bracket 30 drives the protective part 31 to rotate to cover the first connecting part 21.

[0112] Therefore, on the one hand, the first accommodating groove 321 can position and limit the first connecting part 21, thereby reducing the difficulty of connecting the electrical connector 20 with the first pole 11 and improving the stability of the electrical connector 20 on the battery cell 10. On the other hand, during the rotation of the bracket 30, the first accommodating groove 321 can increase the avoidance space for the first connecting part 21, so that the bracket 30 can rotate more smoothly.

[0113] In some embodiments, as Figure 4 As shown, a second accommodating groove 322 extending along a circular arc is formed on the inner peripheral wall of the accommodating cavity 32. The second accommodating groove 322 is suitable for being coaxially arranged with the battery cell 10. The battery cell assembly 100 also includes: a protective member 40, and part of the protective member 40 extends into the second accommodating groove 322.

[0114] For example, after the bracket assembly 1 is assembled on the battery cell 10, in the radial outward direction of the battery cell 10, the protective member 40 extends beyond the battery cell 10 into the second accommodating groove 322, and the first accommodating groove 321 and the second accommodating groove 322 are connected to form a groove body surrounding the axis of the battery cell 10.

[0115] During the production process, the protective part 40 is placed in the second receiving groove 322 inside the receiving cavity 32. During the process of installing the protective part 40 on the battery cell 10, the second receiving groove 322 can stabilize the posture of the protective part 40, thereby reducing the difficulty of operation. During the rotation of the bracket 30, the second receiving groove 322 can provide avoidance space for the protective plate, so that the bracket 30 can rotate more smoothly. After the battery cell assembly 100 is assembled, the second receiving groove 322 can limit the protective part 40 to improve the stability of the protective part 40 on the battery cell 10.

[0116] In some embodiments, as Figure 2-Figure 5 As shown, a fixing groove 33 surrounding the accommodating cavity 32 is formed on the outer peripheral wall of the bracket 30 .

[0117] Exemplarily, the battery cell assembly 100 includes a plurality of battery cells 10 , each of which is provided with a corresponding bracket assembly 1 , and the plurality of battery cells 10 are fixed to each other by wrapping a binding band around the fixing groove 33 .

[0118] By providing the fixing groove 33 , the difficulty of fixing the battery cell 10 can be reduced, and the reliability of the connection between the battery cell 10 and other components can be improved.

[0119] The battery cell assembly 100 according to the second embodiment of the present application includes: the bracket assembly 1 according to the first embodiment of the present application and the battery cell 10 .

[0120] Specifically, the battery cell 10 is cylindrical and has an annular first pole 11 at one axial end thereof. The bracket 30 is rotatably disposed on the battery cell 10 around the axis of the battery cell 10 , and the first connecting portion 21 is connected to the first pole 11 .

[0121] During the production process of the battery cell assembly 100, the bracket 30 is first assembled to the battery cell 10, and then the bracket 30 is rotated so that the protective part 31 avoids the connection area of ​​the first connecting part 21 on the first pole 11, and then the first connecting part 21 and the first pole 11 are connected. Then, the bracket 30 is rotated so that the protective part 31 covers at least part of the first connecting part 21, and the posture of the electrical connector 20 is adjusted so that the electrical connector 20 can be connected to other units.

[0122] Therefore, during the production process of the battery cell assembly 100, the operation is relatively simple, and during the operation of the battery cell assembly 100, the protective part 31 can protect the first connection part 21, reducing the probability of foreign objects contacting the first connection part 21, thereby reducing the probability of the first connection part 21 being damaged or short-circuiting with other units.

[0123] According to the battery cell assembly 100 of the second embodiment of the present application, by providing the bracket assembly 1 of the first embodiment of the present application, the reliability of the battery cell assembly 100 during operation can be improved.

[0124] In some embodiments, as Figure 4 and Figure 5 As shown, the first connection portion 21 is in a sheet shape, and in the radially outward direction of the battery cell 10 , the first connection portion 21 exceeds the first terminal 11 .

[0125] Exemplarily, a portion of the first connecting portion 21 that extends beyond the first pole 11 extends into the first receiving groove 321 , and the first connecting portion 21 and the first pole 11 are welded together.

[0126] It is understandable that there will be stress at the connection between the first connecting portion 21 and the first pole 11, which will cause the first connecting portion 21 to deform under the action of stress. The deformation is the largest at the edge of the first connecting portion 21, thereby affecting the contact between the first connecting portion 21 and the first pole 11.

[0127] In this embodiment, by extending the first connection portion 21 outward beyond the first pole 11, the deformation of the first connection portion 21 at the edge of the first pole 11 due to the connection stress can be reduced, thereby improving the fit between the first connection portion 21 and the first pole 11, and increasing the connection area between the first connection portion 21 and the first pole 11, thereby further improving the flow capacity of the first connection portion 21.

[0128] In some embodiments, as Figure 3 and Figure 4 As shown, the bracket assembly 1 further includes a protective member 40 . In the radially outward direction of the battery cell 10 , the protective member 40 exceeds the first pole 11 .

[0129] During the operation of the battery cell assembly 100, the protective member 40 can protect the first pole 11 outside the outer edge of the first pole 11. In this way, the protection area of ​​the protective member 40 on the first pole 11 can be increased, further improving the protection effect of the protective member 40 on the first pole 11.

[0130] In some embodiments, as Figure 2 、 Figure 4 and Figure 5 As shown, a second pole 12 is further provided on the radial inner side of the first pole 11 , an insulating member is provided between the first pole 11 and the second pole 12 , and one of the first pole 11 and the second pole 12 is a positive pole and the other is a negative pole.

[0131] That is to say, the battery cell 10 is arranged in a single-side terminal arrangement.

[0132] Exemplarily, the first connection portion 21 and the protection member 40 are arc-shaped and extend around the axis of the battery cell 10 , and the first connection portion 21 covers the first portion, and the protection member 40 covers the second portion.

[0133] During the production process, the first connection part 21 and the protective member 40 are spliced ​​together to form an annular sleeve on the second pole 12, so that the first connection part 21 and the protective member 40 can be positioned on the first pole 11, and the arc-shaped first connection part 21 can increase the flow area.

[0134] During the arrangement of the battery cell assembly 100, the first pole 11 and the second pole 12 are led out from the same side of the battery cell 10. In this way, there are fewer avoidance relationships to consider, which can reduce the difficulty of arranging the battery cell assembly 100 in the battery device 1000. In addition, the difficulty for the operator during the production process is relatively low, which can reduce the production difficulty of the battery device 1000.

[0135] In some embodiments, in the radial direction of the battery cell 10 , the ratio of the size of the second electrode 12 to the size of the battery cell 10 is greater than or equal to 0.5.

[0136] For example, the ratio of the size of the second electrode 12 to the size of the battery cell 10 may be 0.5, 0.6, or 0.7.

[0137] It is understandable that the area of ​​the second pole 12 located radially inward of the first pole 11 is smaller. Within the above range, the area of ​​the second pole 12 accounts for a high proportion, so that the flow area of ​​the second pole 12 can meet the use requirements.

[0138] During product design, the ratio of the size of the second electrode 12 to the size of the battery cell 10 can be adjusted within the above range to meet more product design requirements. Moreover, once the ratio range is determined, the difficulty of product design can be reduced.

[0139] like Figure 1 As shown, the battery device 1000 according to the third embodiment of the present application includes: the battery cell assembly 100 according to the above-mentioned first embodiment of the present application.

[0140] According to the battery device 1000 of the third embodiment of the present application, by providing the battery cell assembly 100 according to the second embodiment of the present application, the reliability of the battery device 1000 during operation can be improved.

[0141] The electrical device 10000 according to the fourth embodiment of the present application includes: the battery device 1000 according to the third embodiment of the present application.

[0142] like Figure 1 As shown, the electrical device 10000 according to the fourth embodiment of the present application can improve reliability during operation by providing the battery device 1000 according to the third embodiment of the present application.

[0143] Reference below Figure 1-Figure 5 A specific embodiment of a battery cell assembly 100 according to the present application is described.

[0144] The battery cell assembly 100 includes a battery cell 10 and a bracket assembly.

[0145] The bracket assembly includes a bracket 30 , an electrical connector 20 and a protective member 40 .

[0146] The battery cell 10 is cylindrical and is provided with a first electrode 11 and a second electrode 12 at one end in the axial direction. The first electrode 11 is a ring extending around the axis of the battery cell 10. The first electrode 11 is divided into a first part and a second part arranged in sequence in the circumferential direction. The second electrode 12 is arranged radially inside the first electrode 11. One of the first electrode 11 and the second electrode 12 is a positive electrode and the other is a negative electrode. The first electrode 11 and the second electrode 12 are separated by an insulating member.

[0147] The electrical connector 20 includes: a first connecting portion 21 and a connecting section 22. The first connecting portion 21 is formed as an arc line extending around the axis of the battery cell 10. The first connecting portion 21 is connected to the first part of the first pole 11. One end of the connecting section 22 is formed as a second connecting portion 222. The other end of the connecting section 22 is provided with a folded edge 221 folded toward the battery cell 10. The folded edge 221 is connected to the first connecting portion 21.

[0148] The bracket 30 is formed with a accommodating cavity 32 with openings at both ends in the axial direction of the battery cell 10. The two openings of the accommodating cavity 32 are respectively a first opening and a second opening. One end of the battery cell 10 with a first pole 11 extends into the accommodating cavity 32 through the first opening, and the bracket 30 and the battery cell 10 are rotatable. A protective portion 31 is provided at the second opening. The edge of the protective portion 31 on the side of the battery cell 10 away from the axis of the battery cell 10 in the radial direction of the battery cell 10 is divided into a first section 311 and a second section 312. The first section 311 is connected to the edge of the second opening, and the second section 312 is arranged at intervals from the edge of the second opening. The bracket 30 is an injection molded part.

[0149] The protective member 40 is in an arc shape extending around the axis of the battery cell 10 . The protective member 40 is provided at the second portion. The protective member 40 and the first connecting portion 21 are spliced ​​into a ring shape extending around the axis of the battery cell 10 .

[0150] An accommodating groove surrounding the axis of the battery cell 10 is formed on the inner wall of the accommodating cavity 32 . The first connecting portion 21 and the protective member 40 both extend beyond the first pole 11 in the radial outward direction of the battery cell 10 , and the extended portions are placed in the accommodating groove.

[0151] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A bracket assembly for a battery cell (10), characterized in that: The battery cell (10) is cylindrical, and an annular first pole (11) is provided at one axial end of the battery cell (10). The bracket assembly (1) comprises: a bracket (30), the bracket (30) being adapted to be rotatably arranged on the battery cell (10) around the axis of the battery cell (10), and the bracket (30) being provided with a protective portion (31); An electrical connector (20), wherein the electrical connector (20) is provided with a first connecting portion (21), wherein the first connecting portion (21) is suitable for connecting to the first pole (11), The bracket (30) is suitable for rotating relative to the battery cell (10) so that the protection portion (31) covers at least a portion of the first connection portion (21).

2. The bracket assembly according to claim 1, wherein: The first connecting portion (21) is in an arc shape, and the first connecting portion (21) is suitable for being coaxially arranged with the first pole (11).

3. The bracket assembly according to claim 2, wherein: The central angle between the two ends of the first connecting portion (21) is less than or equal to 180°.

4. The bracket assembly according to claim 1, wherein: The protection portion (31) is arc-shaped, and the protection portion (31) is suitable for being coaxially arranged with the first pole (11).

5. The bracket assembly according to claim 2, wherein: In the circumferential direction of the first pole (11), the first pole (11) is divided into a first part and a second part which are arranged sequentially. The first connecting portion (21) is suitable for being connected to the first part. The bracket assembly (1) further comprises a protective member (40), and the protective member (40) is suitable for being connected to the second part.

6. The bracket assembly according to claim 5, characterized in that The protective member (40) is arc-shaped and is suitable for being coaxially arranged with the first pole (11). The first connecting portion (21) is suitable for covering the first part, and the protective member (40) is suitable for covering the second part.

7. The bracket assembly according to claim 1, wherein: The electrical connector (20) further comprises: a connecting section (22), one end of the connecting section (22) being formed as a second connecting portion (222), the second connecting portion (222) being used to connect to other units, and the other end of the connecting section (22) being formed with a folded edge (221), the folded edge (221) being connected to the first connecting portion (21).

8. The bracket assembly according to any one of claims 1 to 7, characterized in that: The bracket (30) is formed with a receiving cavity (32) with two ends opened in a first direction, the two openings of the receiving cavity (32) are respectively a first opening and a second opening, the protective portion (31) is arranged at the second opening and partially covers the second opening, the battery cell (10) is provided with one end of the first pole (11) adapted to extend into the receiving cavity (32) through the first opening, and the first connecting portion (21) is adapted to extend from the second opening into the receiving cavity (32) and be connected to the first pole (11).

9. The bracket assembly according to claim 8, characterized in that The protection portion (31) has a first edge, and in the circumferential direction of the second opening, the first edge is divided into a first section (311) and a second section (312), the first section (311) is connected to the edge of the second opening, and the second section (312) is arranged at intervals from the edge of the second opening.

10. The bracket assembly according to claim 9, wherein: The first edge is in an arc shape, and the central angle between the two ends of the first section (311) is greater than or equal to 25°.

11. The bracket assembly according to claim 8, wherein: A first accommodating groove (321) extending along an arc line is formed on the inner peripheral wall of the accommodating cavity (32). The first accommodating groove (321) is suitable for being coaxially arranged with the battery cell (10), and a portion of the first connecting portion (21) extends into the first accommodating groove (321).

12. The bracket assembly according to claim 8, wherein: A second accommodating groove (322) extending along an arc line is further formed on the inner peripheral wall of the accommodating cavity (32), and the second accommodating groove (322) is suitable for being coaxially arranged with the battery cell (10). The bracket assembly further includes: a protective member (40), and a portion of the protective member (40) extends into the second accommodating groove (322).

13. The bracket assembly according to claim 8, wherein: A fixing groove (33) surrounding the accommodating cavity (32) is formed on the outer peripheral wall of the bracket (30).

14. A battery cell assembly, characterized in that: include: The bracket assembly (1) according to any one of claims 1 to 13; A battery cell (10) is cylindrical, and an annular first pole (11) is provided at one axial end of the battery cell (10); the bracket is rotatably provided on the battery cell (10) around the axis of the battery cell (10); and the first connecting portion (21) is connected to the first pole (11).

15. The battery cell assembly according to claim 14, characterized in that: The first connecting portion (21) is sheet-shaped, and in the radially outward direction of the battery cell (10), the first connecting portion (21) exceeds the first pole (11).

16. The battery cell assembly according to claim 14, characterized in that: The bracket assembly (1) further comprises a protective member, wherein in the radially outward direction of the battery cell (10), the protective member (40) exceeds the first pole (11).

17. The battery cell assembly according to claim 14, characterized in that: A second pole (12) is further provided on the radial inner side of the first pole (11), an insulating member is provided between the first pole (11) and the second pole (12), one of the first pole (11) and the second pole (12) is a positive pole, and the other is a negative pole.

18. The battery cell assembly according to claim 17, wherein: In the radial direction of the battery cell (10), the ratio of the size of the second pole (12) to the size of the battery cell (10) is greater than or equal to 0.

5.

19. A battery device, characterized in that: include: The battery cell assembly (100) according to any one of claims 14 to 18.

20. An electrical device, characterized in that: include: The battery device (1000) as claimed in claim 19.

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