Packaging assembly and battery

Abstract

The utility model relates to a packaging assembly and a battery, the packaging assembly is used for being arranged at the top of a battery cell and forming packaging connection with the battery cell, the packaging assembly comprises: a flexible soft plate extending along the width direction of the battery cell, the plate surface of the flexible soft plate being parallel to the plane where the top of the battery cell is located; the protection plate is connected to one side, facing the battery core, of the flexible soft plate; the plurality of electric components are arranged on one side, facing the battery core, of the protection plate at intervals, and the electric components are electrically connected with the protection plate; and the electric connection part is electrically connected to the side, provided with the electric component, of the protection plate, and the electric connection part is used for being electrically connected with a tab of the battery cell. According to the technical scheme, the technical problems that the overall energy density of the battery is small and the battery performance is poor due to the fact that a traditional battery occupies too large packaging space in the length direction of the traditional battery are effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of lithium batteries, and in particular to a packaging component and a battery. Background Art

[0002] With the rapid development of 5G technology, the energy density requirements for lithium-ion batteries are getting higher and higher. However, the current mainstream dual-cell packaging operation still uses the same packaging process as single-cell packaging, which will cause the dual-cell or multi-cell battery to allocate too much space in its length direction to package the top electrical components, protection boards and other components. Since the battery's outer length is basically the same, too much top packaging space will reduce the cell's accommodation space, resulting in a decrease in the battery's energy density and affecting battery performance. Utility Model Content

[0003] The present application provides a packaging assembly and a battery to solve the technical problem that the packaging space occupied by traditional batteries in their own length direction is too large, resulting in low overall energy density of the battery and poor battery performance.

[0004] To this end, on the first aspect, an embodiment of the present application provides a packaging assembly for being arranged on the top of a battery cell to form a packaging connection with the battery cell, the packaging assembly comprising: a flexible soft board extending along the width direction of the battery cell, the board surface of the flexible soft board being parallel to the plane where the top of the battery cell is located; a protective board connected to a side of the flexible soft board facing the battery cell; a plurality of electrical components arranged at intervals on a side of the protective board facing the battery cell, the electrical components being electrically connected to the protective board; and an electrical connecting portion electrically connected to a side of the protective board on which the electrical components are arranged, the electrical connecting portion being used to electrically connect to the tabs of the battery cell.

[0005] In a possible implementation, a plurality of electrical components are arranged along the width direction of the battery core, and the electrical connection portion is located in a gap between two adjacent electrical components.

[0006] In a possible implementation, the flexible board includes a body and a front board, the body extends along the width direction of the battery cell, and the front board is connected to a side of the body away from the battery cell.

[0007] In a possible implementation, the body includes a first flexible board and a second flexible board that are bent and connected, the first flexible board is arranged toward the battery cell, and the length of the first flexible board is greater than or equal to the length of the second flexible board, and the front board is arranged on a side of the second flexible board away from the first flexible board.

[0008] In a possible implementation manner, a first insulating protection plate is further included. The first insulating protection plate is disposed on a side of the protection plate having the electrical components and is used to wrap the electrical components.

[0009] In a possible embodiment, at least two battery cells are provided, and at least two battery cells are arranged side by side. The protective plate includes at least two sub-protective plates, and one sub-protective plate is arranged corresponding to one battery cell. A gap is formed between two adjacent sub-protective plates to avoid the edge sealing structure of the battery cell.

[0010] In a possible implementation manner, it further includes a first adhesive layer, the first adhesive layer being disposed between the electrical component and the battery core; and / or,

[0011] The packaging component also includes a second adhesive layer, which is arranged between the electrode ear of the battery cell and the protection plate.

[0012] In the second aspect, the present application also provides a battery, which includes: a battery cell, the top of the battery cell includes a top wall, a top seal folded edge connected to the top wall and a pole ear, the top seal folded edge is bent toward the top wall, the pole ear is electrically connected to the top of the battery cell and extends out of the top seal folded edge; and a packaging assembly as described above, the packaging assembly is arranged on a side of the top wall or the top seal folded edge away from the top wall, the electrical component faces the top wall or the top seal folded edge, and the electrical connection portion is electrically connected to the pole ear.

[0013] In a possible implementation, the battery core further includes a side wall connected to the top wall and a side seal fold connected to the side wall, and the side seal fold is bent toward the side wall.

[0014] In a possible implementation manner, a second insulating protection plate is further included, and the second insulating protection plate is disposed on the top of the battery cell and is used to wrap the packaging assembly.

[0015] In a possible embodiment, when the battery cells are a combination of at least two battery cells arranged side by side, the protective plate includes at least two sub-protective plates, one sub-protective plate is arranged corresponding to one battery cell, and a gap is formed between two adjacent sub-protective plates to avoid the top seal fold between two adjacent battery cells.

[0016] In a possible embodiment, the battery also includes at least two third adhesive layers, one third adhesive layer is arranged corresponding to a sub-protective plate, the third adhesive layer is connected to the side of the top seal fold away from the top wall along the width direction of the battery cell, the electrical components are connected to the top wall or the top seal fold through the third adhesive layer, and two adjacent third adhesive layers are inserted in the gap between two adjacent sub-protective plates so that the flexible soft board is connected to the top seal fold through the third adhesive layer.

[0017] According to the packaging assembly and battery provided in the embodiments of the present application, the packaging assembly is used to be arranged on the top of the battery cell to form a packaging connection with the battery cell, and the packaging assembly includes: a flexible soft board extending along the width direction of the battery cell, and the board surface of the flexible soft board is parallel to the plane where the top of the battery cell is located; a protective board connected to the side of the flexible soft board facing the battery cell; a plurality of electrical components, arranged at intervals on the side of the protective board facing the battery cell, and the electrical components are electrically connected to the protective board; and an electrical connection portion, electrically connected to the side of the protective board where the electrical components are arranged, and the electrical connection portion is used to electrically connect to the pole ear of the battery cell. The technical solution of the present application sets the plane where the packaging component is located parallel to the plane where the cell head is located, so that the thickness of the packaging component is in the length direction of the cell and the width of the packaging component is in the thickness direction of the cell, avoiding the layout mode in which the width of the packaging component is configured in the length direction of the cell and the thickness of the packaging component is configured in the thickness direction of the cell in the traditional packaging method, so that the length of the packaging space at least saves the difference between the width of the packaging component and its thickness, thereby reserving a larger accommodation space for the cell in the length direction of the battery, improving the energy density and performance of the battery; and, the flexible soft board of the packaging component is placed in front, so that the electrical components connected thereto and the pole ears on the cell are located on the same side of the flexible soft board, which can directly realize the electrical connection between the electrical components and the cell, further reducing the space occupied by the packaging component in its thickness direction, and improving the energy density of the battery. In addition, placing the flexible soft board of the packaging component in front can also avoid the packaging process in the traditional packaging method in which the electrical components are placed in front and the conductive parts need to be added to make the electrical components and the cell electrically connected, simplifying the packaging process of the battery and improving the packaging efficiency of the battery. In this way, the space occupied by the top package is reduced at least in the length direction of the battery cell, so that the battery can accommodate more battery cell volume, thereby improving the energy density and battery performance of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments that conform to the present application, and are used together with the specification to explain the principles of the present application. In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can also be obtained based on these drawings without paying creative labor. One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplified descriptions do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a proportional limitation.

[0019] Figure 1 An exploded view of a packaging assembly provided in an embodiment of the present application;

[0020] Figure 2for Figure 1 Assembly drawing of

[0021] Figure 3 A cross-sectional view of a battery provided in an embodiment of the present application along its length direction;

[0022] Figure 4 A schematic diagram of a partial three-dimensional structure of a battery cell provided in an embodiment of the present application;

[0023] Figure 5 A front view of a battery provided in an embodiment of the present application;

[0024] Figure 6 A back view of a battery provided in an embodiment of the present application;

[0025] Figure 7 A schematic diagram of the three-dimensional structure of the eighth adhesive layer of the battery provided in an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 100, flexible board; 110, body; 111, first board; 112, second board; 120, front board;

[0028] 200, protection plate; 210, sub-protection plate;

[0029] 300. Electrical components;

[0030] 400, a first insulating protection member; 500, a second insulating protection member;

[0031] 600, first adhesive layer; 700, second adhesive layer;

[0032] 10. battery cell; 11. tab; 12. top wall; 13. top seal fold; 14. side wall; 15. side seal fold; 20. third adhesive layer; 30. fourth adhesive layer; 40. fifth adhesive layer; 50. sixth adhesive layer; 60. seventh adhesive layer; 70. eighth adhesive layer; 71. hollow portion; 80. handle;

[0033] X, the width direction of the battery cell; Y, the length direction of the battery cell; Z, the thickness direction of the battery cell. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0035] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or settings discussed in itself. In addition, the various specific processes and examples of materials provided by the present application, but those of ordinary skill in the art can appreciate the applicability of other processes and / or the use of other materials.

[0036] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0037] See also Figures 1 to 3 A packaging component is used to be arranged on the top of a battery cell 10 to form a packaging connection with the battery cell 10, and the packaging component includes: a flexible soft board 100, extending along the width direction X of the battery cell 10, and the board surface of the flexible soft board 100 is parallel to the plane where the top of the battery cell 10 is located; a protection board 200, connected to the side of the flexible soft board 100 facing the battery cell 10; a plurality of electrical components 300, arranged at intervals on the side of the protection board 200 facing the battery cell 10, and the electrical components 300 are electrically connected to the protection board 200; and an electrical connection portion, electrically connected to the side of the protection board 200 where the electrical components 300 are arranged, and the electrical connection portion is used to electrically connect to the pole ear 11 of the battery cell 10.

[0038] In the present embodiment, the plane where the packaging component is located is arranged parallel to the plane where the head of the battery cell 10 is located, so that the thickness of the packaging component is in the length direction Y of the battery cell 10, and the width of the packaging component is in the thickness direction Z of the battery cell 10, thereby avoiding the layout mode in which the width of the packaging component is configured in the length direction Y of the battery cell 10 and the thickness of the packaging component is configured in the thickness direction Z of the battery cell 10 in the traditional packaging method, so that the length of the packaging space at least saves the difference between the width of the packaging component and its thickness, thereby reserving a larger accommodation space for the battery cell 10 in the length direction Y of the battery, thereby improving the energy density and performance of the battery; and, the flexible soft board 100 of the packaging component is placed in front, so that the electrical component 300 connected thereto and the pole ear 11 on the battery cell 10 are located on the same side of the flexible soft board 100, so that the electrical connection between the electrical component 300 and the battery cell 10 can be directly realized, further reducing the space occupied by the packaging component in its thickness direction Z, and improving the energy density of the battery. In addition, placing the flexible board 100 of the packaging assembly in front can also avoid the packaging process of placing the electrical components 300 in front and adding conductive parts to electrically connect the electrical components 300 to the battery cell 10 in the traditional packaging method, which simplifies the battery packaging process and improves the battery packaging efficiency. In this way, at least in the length direction Y of the battery cell 10, the space occupied by the top package is reduced, so that the battery can accommodate more battery cells 10 volume, and the battery energy density and battery performance are improved.

[0039] Specifically, the packaging assembly is configured as a composite component including at least a flexible soft board 100, a protective board 200, a plurality of electrical components 300 and an electrical connection part. The flexible soft board 100 can be an FPC board, which can be a long plate-shaped structure, such as a long strip of soft board, which is configured at the outermost side of the battery cell 10, and can use its position advantage to provide mechanical protection and support to the head of the battery cell 10, the protective board 200, the plurality of electrical components 300 and the electrical connection part, etc., and can use its own flexible characteristics to provide a buffer force along the length direction Y of the battery itself to the head of the battery cell 10, the protective board 200, the plurality of electrical components 300 and the electrical connection part, etc., to improve the anti-fall performance of the battery, and make the battery resistant to shock and fall. The protective board 200 can be a PCB board, which is configured on the side of the flexible soft board 100 facing the battery cell 10; the front board surface of the protective board 200 is flush and fit with the rear board surface of the flexible soft board 100, so as to reduce the space occupied by the protective board 200 in the length direction Y of the battery cell 10. The front surface of the electric component 300 is flush with and in contact with the rear surface of the protection plate 200, and the rear surface of the electric component 300 is flush with and in contact with the top surface of the battery cell 10, so as to reduce the space occupied by the electric component 300 in the length direction Y of the battery cell 10. The electrical connection portion can be a pad or a metal conductive member configured on the protection plate 200, or can be an exposed electrical connection position on the protection plate 200, which is used to achieve electrical connection with the tab 11 on the battery cell 10. Generally speaking, the electrical component 300, the electrical connection part, the protection board 200 and the flexible soft board 100 are arranged in sequence from the inside to the outside of the battery cell 10, and the plane where the electrical component 300 is located, the plane where the electrical connection part is located, the plane where the protection board 200 is located, and the plane where the flexible soft board 100 is located are parallel, which can reduce the overall thickness of the packaging assembly; and, the plane where the electrical component 300 is located, the plane where the electrical connection part is located, the plane where the protection board 200 is located, and the plane where the flexible soft board 100 is located are all flush with the top surface of the battery cell 10 at the same time, and placing the packaging assembly horizontally can effectively reduce the space occupied on the top of the battery cell 10 after the packaging assembly is assembled on the battery cell 10.

[0040] In actual operation, the packaging length of the top of the battery cell 10 packaged by the traditional packaging process is 2.2mm, while after packaging using the packaging component provided in the present application, the packaging length of the top of the battery cell 10 can be reduced to 0.55mm. That is to say, the packaging component provided in the present application saves 1.65mm of packaging length space for the battery in its own length direction Y, provides 1.65mm of accommodation length space for the battery cell 10, and effectively improves the energy density of the battery.

[0041] In one example, the electrical components 300 may be arranged at multiple points, for example, multiple electrical components 300 may be arranged at intervals along the width direction X of the battery cell 10 or the thickness direction Z of the battery cell 10; or, the electrical components 300 may be arranged at a single point, and the entire component is arranged in the middle area of ​​the protection plate 200, and the installation position of the tab 11 is reserved in the left and right side areas / front and rear side areas of the protection plate 200, and the tab 11 may be a letter-shaped tab 11. The layout of the electrical components 300 is not limited here, as long as the thickness space of the electrical components 300 can be fully considered to realize the assembly of the tab 11 when arranging the electrical components 300, so as to reduce the thickness distance between the electrical components 300 and the battery cell 10.

[0042] In a possible implementation, a plurality of electrical components 300 are arranged along the width direction X of the battery core 10 , and the electrical connection portion is located in a gap between two adjacent electrical components 300 .

[0043] In this embodiment, the connection mode between the electrical component 300 and the battery cell 10 is optimized. Specifically, the electrical component 300 is arranged in a multi-point manner, and the electrical component 300 can extend along the thickness direction Z of the battery cell 10. A plurality of electrical components 300 are arranged on the protection plate 200 in parallel and at intervals. For example, three electrical components 300 can be arranged, and the three electrical components 300 are respectively arranged at both ends and the middle position of the protection plate 200 to form two installation gaps on the protection plate 200 for inserting the tab 11, so that the electrical component 300 and the tab 11 share a thickness space, and the packaging distance between the electrical component 300 and the battery cell 10 is reduced.

[0044] In one example, the tab 11 can be connected to the rear plate surface of the protection plate 200 by welding, and the electrical component 300 can be connected to the top of the battery cell 10 by welding, so as to improve the connection tightness between the tab 11 and the protection plate 200, improve the connection tightness between the electrical component 300 and the battery cell 10, and improve the stability and functional reliability of the battery structure. Of course, in other embodiments, the tab 11 can also be connected to the protection plate 200 by bonding or the like, and the electrical component 300 can also be connected to the battery cell 10 by bonding or the like, and the connection method between the tab 11 and the protection plate 200, and the electrical component 300 and the battery cell 10 is not limited here.

[0045] In a possible implementation, the flexible board 100 includes a body 110 and a front board 120 . The body 110 extends along a width direction X of the battery cell 10 , and the front board 120 is connected to a side of the body 110 away from the battery cell 10 .

[0046] In this embodiment, the specific configuration of the flexible soft board 100 is optimized. Specifically, the flexible soft board 100 is configured as a combined component including at least a body 110 and a front plate 120. The body 110 can be a long strip plate structure, which is placed horizontally on the top of the battery cell 10 to protect the battery cell 10, support the protection plate 200 and the electrical components 300. The front plate 120 can be an integral structure with the body 110, with a connector at the end position, and a reinforcing steel sheet can be provided on the front plate 120. The reinforcing steel sheet and the connector are respectively located on the opposite sides of the front plate 120. The connector is used to extend the battery after the battery packaging is completed, and provide an electrical connection port for the electrical appliance (such as a mobile terminal, a motherboard connection of a mobile phone) to facilitate the charging and discharging of the battery. In this example, the front plate 120 is vertically arranged on the body 110 to lead out the reinforced front plate 120 from the length direction Y of the battery cell 10, which is suitable for installation scenarios with high requirements on the width and thickness of the battery cell 10.

[0047] Of course, in other embodiments, the front plate 120 may be disposed at the end of the body 110 , and the reinforced front plate 120 may be drawn out from the width direction X or the thickness direction Z of the battery cell 10 , so as to be suitable for installation scenarios with strict requirements on the length of the battery cell 10 .

[0048] In a possible embodiment, the main body 110 includes a first soft board 111 and a second soft board 112 that are bent and connected, the first soft board 111 is arranged toward the battery cell 10, and the length of the first soft board 111 is greater than or equal to the length of the second soft board 112, and the front board 120 is arranged on a side of the second soft board 112 away from the first soft board 111.

[0049] In this embodiment, the specific configuration of the body 110 is optimized. Specifically, the body 110 is configured as a composite component including at least a first soft board 111 and a second soft board 112. The first soft board 111 and the second soft board 112 can be an integral part, and the material thereof is the same. The parameters such as the board width and the board thickness can be the same. The position characteristics of the first soft board 111 and the second soft board 112 can be obtained by bending the integral board, so as to reduce the difficulty of processing. For example, the length of the second soft board 112 is less than the length of the first soft board 111, and it covers a part of the first soft board 111. A spring structure can be formed at the end of the first soft board 111, and a buffer force in the length direction Y of the battery cell 10 is provided to the front board 120 arranged on the second soft board 112, so as to avoid that when an external electrical appliance contacts the front board 120, the front board 120 is directly abutted against the soft board, the protective board 200, the electrical connection part and the pole ear 11, the electrical component 300 and the battery cell 10 by the external thrust force, so as to ensure the battery performance of the battery.

[0050] like Figure 1 and Figure 2As shown, in a possible implementation manner, a first insulating protective member 400 is further included. The first insulating protective member 400 is disposed on a side of the protective plate 200 having the electrical component 300 , and is used to wrap the electrical component 300 .

[0051] In this embodiment, the specific configuration of the packaging component is further optimized. Specifically, the packaging component is configured as a composite component including at least a flexible soft board 100, a protection board 200, an electrical component 300, an electrical connection portion, and a first insulating protection member 400. The first insulating protection member 400 can be a plastic sealing layer, which is wrapped around the outside of the electrical component 300 to prevent the electrical component 300 from being exposed to the air and being damaged, thereby achieving insulation and plastic sealing of the electrical component 300, extending the service life of the electrical component 300, and improving the safety of the electrical component 300.

[0052] In one possible embodiment, at least two battery cells 10 are provided, and at least two battery cells 10 are arranged side by side. The protective plate 200 includes at least two sub-protective plates 210, and one sub-protective plate 210 is arranged corresponding to one battery cell 10. A gap is formed between two adjacent sub-protective plates 210 to avoid the edge sealing structure of the battery cell 10.

[0053] In the present embodiment, a packaging structure of a battery with two cells 10 is provided. When the battery includes two cells 10 arranged side by side, due to the particularity of placing the flexible soft board 100 externally in the present application, each cell 10 needs to be configured with an independent sub-protection board 210 and an electrical component 300, that is, the battery with two cells 10 can share an external flexible soft board 100, and two sub-protection boards 210 and at least two electrical components 300 need to be configured, and one sub-protection board 210 and at least one electrical component 300 are arranged corresponding to one cell 10. In this way, a sub-protection board 210 with a segmented layout is formed on the side of the flexible soft board 100 to avoid the edge sealing structure of the cell 10, so that the edge sealing structure shares a thickness packaging space with the sub-protection board 210 and the electrical component 300, at least in the length direction Y, to reduce the occupied space of the packaging assembly, to increase the energy density of the battery in its length direction Y, and to improve the battery performance. Compared with the traditional packaging process where the flexible board 100 is built-in and a protective board 200 and an electrical component 300 are shared, the present application proposes a segmented protective board 200 structure and an electrical component 300, which can effectively reduce the bending difficulty of the edge sealing structure set on the top of the battery cell 10, reduce the risk caused by bending, and improve battery performance. It should be explained that the edge sealing structure of the battery cell 10 refers to the bulge or bend formed on the top of the aluminum-plastic film of the battery cell 10.

[0054] In another embodiment, the present application may also provide a packaging structure of a multi-cell 10 battery. When the battery includes three or more cells 10 and three or more single cells can be arranged side by side, multiple cells 10 can share a flexible soft board 100, and be configured with three or more sub-protection boards 210 and at least three or more electrical components 300, one sub-protection board 210 and at least one electrical component 300 are arranged corresponding to one cell 10; the packaging assembly designed according to this arrangement of cells 10 has a simple structure and low cost. Of course, in other embodiments, three or more cells 10 can also be arranged side by side and then overlapped. At this time, each row of cells 10 can share a flexible soft board 100, and be configured with three or more sub-protection boards 210 and at least three or more electrical components 300, one sub-protection board 210 and at least one electrical component 300 are arranged corresponding to one cell 10; the battery designed according to this arrangement of cells 10 occupies a small space and has a small volume.

[0055] In a possible implementation manner, a first adhesive layer 600 is further included, and the first adhesive layer 600 is disposed between the electrical component 300 and the battery core 10 .

[0056] In this embodiment, the specific configuration of the packaging component is further optimized. Specifically, the packaging component is configured as a composite component including at least a flexible soft board 100, a protective board 200, an electrical component 300, an electrical connection part and a first adhesive layer 600. The first adhesive layer 600 can be a PUR adhesive tape, which is configured between the electrical component 300 and the battery cell 10 to enhance the connection tightness between the electrical component 300 and the battery cell 10, and prevent the electrical component 300 from loosening from the battery cell 10 after the battery is subjected to external impact / impact. For example, in the case of battery falling or battery hitting other objects, the stability and reliability of the internal structure of the battery can be ensured, and the anti-fall and shockproof performance of the battery can be improved.

[0057] In a possible implementation, the packaging assembly further includes a second adhesive layer 700 , and the second adhesive layer 700 is disposed between the tab 11 of the battery cell 10 and the protection plate 200 .

[0058] In this embodiment, the specific configuration of the packaging component is further optimized. Specifically, the packaging component is configured as a composite component including at least a flexible soft board 100, a protective board 200, an electrical component 300, an electrical connection part and a second adhesive layer 700. The second adhesive layer 700 can be a double-sided adhesive, which is configured between the pole ear 11 and the protective board 200 to enhance the connection tightness between the pole ear 11 and the protective board 200, and prevent the protective board 200 from loosening from the pole ear 11 after the battery is subjected to external impact / impact. For example, when the battery falls or hits other objects, the stability and reliability of the internal structure of the battery can be ensured, and the anti-fall and shockproof performance of the battery can be improved.

[0059] In the second aspect, the present application also provides a battery, which includes: a battery cell 10, the top of the battery cell 10 includes a top wall 12, a top seal fold 13 connected to the top wall 12, and a pole ear 11, the top seal fold 13 is bent toward the top wall 12, the pole ear 11 is electrically connected to the top of the battery cell 10, and extends out of the top seal fold 13; and a packaging assembly as described above, the packaging assembly is arranged on a side of the top wall 12 or the top seal fold 13 away from the top wall 12, the electrical component 300 faces the top wall 12 or the top seal fold 13, and the electrical connection portion is electrically connected to the pole ear 11.

[0060] In this embodiment, a battery with high energy density and small top seal space required in the length direction Y of the battery cell 10 is provided. The battery is configured as a combined component including at least a battery cell 10 and a packaging assembly. The top of the battery cell 10 includes a combined component of a top wall 12, a top seal fold 13 and a tab 11. The battery cell 10 can be a square soft-pack battery cell 10, which is formed by wrapping the battery material with an aluminum-plastic film. The aluminum-plastic film on the top of the battery cell 10 constitutes the top wall 12 of the battery cell 10; at the same time, the aluminum-plastic film has a surplus on the top side of the battery cell 10, and the surplus aluminum-plastic film is the top seal folding edge 13, the top seal folding edge 13 is bent and connected to one side of the top wall 12, and is parallel to or fits with the top wall 12 after bending, so as to form a horizontal U-shaped gap at the top of the battery cell 10; the top seal folding edge 13 covers at least part of the top wall 12 of the battery cell 10, and the top seal folding edge 13 is arranged in a curved surface in the width direction X of the battery cell 10, so as to form a U-shaped groove with an opening away from the top wall 12 at the top of the battery cell 10, and form a U-shaped top seal at the top of the battery cell 10. The pole ear 11 can be an electrode nickel sheet that is approximately Z-shaped, and its bottom is inserted into the horizontal U-shaped gap formed by the top wall 12 and the top seal fold 13, and is welded to the top wall 12 and / or the top seal fold 13 to achieve electrical connection between the pole ear 11 and the battery cell 10, while further improving the connection tightness between the pole ear 11 and the battery cell 10, and improving the structural stability and reliability of the battery cell 10. The protective plate 200, electrical connection part and multiple electrical components 300 of the packaging assembly are all accommodated in the U-shaped groove, and the flexible soft board 100 of the packaging assembly abuts against the side of the top seal fold 13 away from the top wall 12, and the pole ear 11 of the battery cell 10 is electrically connected to the electrical connection part on the protective plate 200. In this way, the top seal fold 13 can share a length space with the protective plate 200, the electrical components 300 and the electrical connection part, thereby reducing the space occupied by the packaging assembly in the length direction Y of the battery cell 10, and at least improving the battery cell 10. The energy density in the length direction Y thereof; the electrical component 300, the electrical connection part and the tab 11 of the battery cell 10 are arranged on the same side of the flexible soft board 100, so as to avoid placing the protection board 200 and the electrical component 300 externally and requiring additional conductive parts to electrically connect the protection board 200 and the tab 11, thereby streamlining the packaging process at the top of the battery cell 10 and improving the packaging efficiency; the top seal fold 13 can also be used to achieve mechanical protection of the protection board 200, the electrical component 300 and the electrical connection part, thereby improving the structural stability and reliability of the battery.

[0061] In other examples, the shape of the top seal fold 13 may also be a straight line, an L-shape, a C-shape, etc., and is not necessarily limited to a U-shape.

[0062] In addition, the specific structure of the packaging assembly refers to the above embodiments. Since the battery adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0063] In a possible implementation, the battery cell 10 further includes a side wall 14 connected to the top wall 12 and a side seal fold 15 connected to the side wall 14 , and the side seal fold 15 is bent toward the side wall 14 .

[0064] In this embodiment, the specific configuration of the battery cell 10 is further optimized. Specifically, the battery cell 10 is configured such that its top at least includes a top wall 12, a top seal fold 13 and a pole ear 11, and its side at least includes a combination of a side wall 14 and a side seal fold 15. The battery cell 10 can be a square soft-pack battery cell 10, which is formed by wrapping the battery material with an aluminum-plastic film. The aluminum-plastic film on the side of the battery cell 10 constitutes the side wall 14 of the battery cell 10; at the same time, the aluminum-plastic film has a surplus on the side of the battery cell 10, and the surplus aluminum-plastic film is the side seal fold 15. The side seal fold 15 is bent and connected to one side of the side wall 14, and is parallel to or fits with the side wall 14 after bending, and a certain assembly gap can be allowed between the two; the side seal fold 15 covers at least part of the side wall 14 of the battery cell 10, and the side seal fold 15 is arranged in a plane in the length direction Y of the battery cell 10 to form a plane side seal on the side of the battery cell 10. The top end of the side wall 14 is connected to the end of the top wall 12 , and the side seal fold 15 is flush with the edge of the top seal fold 13 to form a convex structure on both ends of the top seal fold 13 to reduce the difficulty of bending the top seal fold 13 .

[0065] like Figure 3 As shown, in a possible implementation manner, a second insulating protection member 500 is further included. The second insulating protection member 500 is disposed on the top of the battery cell 10 to wrap the packaging assembly.

[0066] In this embodiment, the specific configuration of the battery is further optimized. Specifically, the battery is configured as a composite component including at least a battery cell 10, a packaging component and a second insulating protective member 500. The second insulating protective member 500 can be a hot melt adhesive layer, which is wrapped around the outside of the packaging components such as the flexible soft board 100, the protective board 200, a plurality of electrical components 300 and an electrical connection portion, and its front end is connected to the top of the battery cell 10 to further strengthen the connection tightness between the packaging component and the battery cell 10. In addition, the shape of the second insulating protective member 500 can be a regular shape, such as a rectangular parallelepiped, a cube or a cylinder, etc., or an irregular special-shaped shape, which can be specifically set according to user needs. The battery provided by this example has high neatness, high aesthetics, and strong packaging firmness.

[0067] In a possible embodiment, when the battery cells 10 are a combination of at least two arranged side by side, the protective plate 200 includes at least two sub-protective plates 210, one sub-protective plate 210 is arranged corresponding to one battery cell 10, and a gap is formed between two adjacent sub-protective plates 210 to avoid the top seal fold 13 between the two adjacent battery cells 10.

[0068] In the present embodiment, a dual-cell 10 battery arranged side by side is provided, and the battery is configured as a composite component including at least two cells 10, a flexible soft board 100, two sub-protection boards 210 and two groups of electrical components 300. A top seal fold 13 is provided on the top of each cell 10, and a top seal fold 13 corresponds to accommodating a group of electrical components 300, a group of pole ears 11, a sub-protection board 210, an electrical connection part and a corresponding part of the flexible soft board 100. In this way, a battery can share a front flexible soft board 100, and the structure is simple. Specifically, when the packaging assembly is assembled to the U-shaped top seal fold 13, the back plate of the flexible soft board 100 of the packaging assembly abuts against the two ends of the top seal fold 13. On the one hand, a layer of glue can be applied at the connection between the flexible soft board 100 and the top seal fold 13 to enhance the connection tightness between the flexible soft board 100 and the top seal fold 13, thereby improving the stability of the internal structure of the battery; on the other hand, the flexible soft board 100 abuts against the top of the top seal fold 13 to form a relatively sealed installation cavity for accommodating the sub-protection plate 210, the electrical connection part, multiple electrical components 300 and the pole ear 11, thereby improving the compactness of the layout between the internal components of the battery and improving the reliability of the battery.

[0069] In a possible embodiment, the battery also includes at least two third adhesive layers 20, one third adhesive layer 20 is arranged corresponding to one sub-protective plate 210, the third adhesive layer 20 is connected to the side of the top seal fold 13 away from the top wall 12 along the width direction X of the battery cell 10, and the electrical component 300 is connected to the top wall 12 or the top seal fold 13 through the third adhesive layer 20, and two adjacent third adhesive layers 20 are inserted in the gap between two adjacent sub-protective plates 210, so that the flexible soft board 100 is connected to the top seal fold 13 through the third adhesive layer 20.

[0070] In this embodiment, the specific configuration of the battery is further optimized. Specifically, the battery is configured as a composite component including at least two battery cells 10 arranged side by side, at least two third adhesive layers 20, a packaging component and a third adhesive layer 20. The third adhesive layer 20 can be a top sealing adhesive tape, which is pasted on the side of the top sealing fold 13 away from the top wall 12 to improve the flatness and smoothness of the inner wall of the top sealing fold 13; it is configured with at least two, one third adhesive layer 20 is arranged corresponding to one top sealing fold 13, and the shape of the third adhesive layer 20 can be the same as the shape of the top sealing fold 13. It is attached to the inner wall surface of the top sealing fold 13 along the width direction X of the battery cell 10. In this way, the top sealing fold 13 can be firmly bonded to prevent the loosening and deformation of the top sealing fold 13, and the flatness and smoothness of the inner wall of the top sealing fold 13 can be improved, so as to avoid the top sealing fold 13 occupying the packaging space in the length direction Y of the battery cell 10 due to the uneven inner wall, and facilitate the assembly of the subsequent packaging component.

[0071] In a possible implementation, a fourth glue layer 30 and a fifth glue layer 40 are further included, wherein the fourth glue layer 30 covers the head of the battery cell 10 and the packaging component along the width direction X of the battery cell 10 ; and the fifth glue layer 40 covers the tail of the battery cell 10 along the width direction X of the battery cell 10 .

[0072] In this embodiment, the specific configuration of the battery is further optimized. Specifically, the battery is configured as a composite component including at least two battery cells 10 arranged side by side, at least two third adhesive layers 20, a packaging component, a fourth adhesive layer 30 and a fifth adhesive layer 40. The fourth adhesive layer 30 can be a head adhesive tape, which is used to wrap the heads and packaging components of at least two battery cells 10 to prevent the packaging components and at least two battery cells 10 from loosening, dislocating, etc., and improve the connection tightness and reliability of the head structure of the battery. The fifth adhesive layer 40 can be a tail adhesive tape, which is used to wrap the tails of at least two battery cells 10 to prevent the at least two battery cells 10 from separating and dislocating at their tails, and improve the connection tightness and reliability of the tail structure of the battery.

[0073] In a possible implementation, a sixth adhesive layer 50 is further included, and the sixth adhesive layer 50 is coated on the side wall 14 and the side seal fold 15 of the battery cell 10 along the length direction Y of the battery cell 10 , and the two ends of the sixth adhesive layer 50 overlap with the fourth adhesive layer 30 and the fifth adhesive layer 40 respectively.

[0074] In this embodiment, the specific configuration of the battery is further optimized. Specifically, the battery is configured as a composite component including at least two battery cells 10 arranged side by side, at least two third adhesive layers 20, a packaging component, a fourth adhesive layer 30, a fifth adhesive layer 40 and a sixth adhesive layer 50. The sixth adhesive layer 50 can be a side adhesive tape, which is used to include the two outermost side walls 14 and the side sealing folding edge 15 of at least two battery cells 10, so as to improve the protection of the side of the battery cell 10; and the two ends of the sixth adhesive layer 50 are respectively connected to the parts of the fourth adhesive layer 30 and the fifth adhesive layer 40, which can further strengthen the connection tightness of the fourth adhesive layer 30 and the fifth adhesive layer 40 in the length direction Y of the battery cell 10, and strengthen the connection tightness of the head structure and the tail structure of the battery.

[0075] In a possible implementation manner, a seventh adhesive layer 60 is further included, and the seventh adhesive layer 60 is connected to the connecting gaps between two adjacent battery cells 10 along the length direction Y of the battery cells 10 .

[0076] In this embodiment, the specific configuration of the battery is further optimized. Specifically, the battery is configured as a composite component including at least two battery cells 10 arranged side by side, at least two third adhesive layers 20, a packaging component and a seventh adhesive layer 60. The seventh adhesive layer 60 can be a fixing adhesive tape, which is used to be pasted at the connection position of two adjacent battery cells 10 to improve the connection tightness between multiple battery cells 10 and prevent the battery cells 10 from moving or shaking in the thickness direction. Improve the stability of the internal structure of the battery.

[0077] In a possible implementation manner, an eighth glue layer 70 is further included, and the eighth glue layer 70 is wrapped around the outer sides of at least two battery cells 10 .

[0078] In this embodiment, the specific configuration of the battery is further optimized. Specifically, the battery is configured as a composite component including at least two battery cells 10 arranged side by side, at least two third adhesive layers 20, a packaging component and an eighth adhesive layer 70. The eighth adhesive layer 70 can be an easy-to-tear sticker, which is used to wrap the outer side of the battery cell 10 of the entire battery, so that the battery structure is stable and can be fireproof, waterproof and dustproof.

[0079] In a possible embodiment, a hollow portion 71 is provided on the eighth adhesive layer 70, and the hollow portion 71 is located at the side wall 14 and the side seal fold 15 of the battery cell 10. The battery also includes a handle 80, which is provided at the corresponding hollow portion 71 and adhered to the battery cell 10, and the eighth adhesive layer 70 is provided on the outer side of the handle 80.

[0080] In this embodiment, the specific configuration of the battery is further optimized. Specifically, the battery is configured as a composite component including at least two battery cells 10 arranged side by side, at least two third adhesive layers 20, a packaging component, an eighth adhesive layer 70, and a handle 80. The handle 80 can be attached to the middle of the side wall 14 and the side seal fold 15 of the battery cell 10 and corresponds to the hollow portion 71 of the second adhesive layer 700, so as to facilitate operators to lift and disassemble the battery.

[0081] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0082] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0083] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A packaging component, used to be arranged on the top of a battery cell and to form a packaging connection with the battery cell, characterized in that: The packaging assembly comprises: A flexible board extends along the width direction of the battery cell, and a board surface of the flexible board is parallel to a plane where the top of the battery cell is located; A protection board connected to a side of the flexible board facing the battery cell; A plurality of electrical components are arranged at intervals on a side of the protection plate facing the battery cell, and the electrical components are electrically connected to the protection plate; and The electrical connection portion is electrically connected to a side of the protection plate where the electrical components are disposed, and the electrical connection portion is used to be electrically connected to the tab of the battery cell.

2. The packaging assembly according to claim 1, characterized in that: The plurality of electrical components are arranged along the width direction of the battery core, and the electrical connection portion is located in a gap between two adjacent electrical components.

3. The packaging assembly according to claim 1, characterized in that: The flexible board comprises a body and a front board, wherein the body extends along the width direction of the battery core, and the front board is connected to a side of the body away from the battery core.

4. The packaging assembly according to claim 3, characterized in that: The body includes a first soft board and a second soft board connected by bending, the first soft board is arranged toward the battery core, and the length of the first soft board is greater than or equal to the length of the second soft board, and the front board is arranged on a side of the second soft board away from the first soft board.

5. The packaging assembly according to claim 1, characterized in that: It also includes a first insulating protection plate, which is arranged on a side of the protection plate having the electrical component and is used to wrap the electrical component.

6. The packaging assembly according to claim 1, characterized in that: There are at least two battery cells, at least two of which are arranged side by side. The protective plate includes at least two sub-protective plates, one sub-protective plate is arranged corresponding to one battery cell, and a gap is formed between two adjacent sub-protective plates to avoid the edge sealing structure of the battery cell.

7. The packaging assembly according to claim 1, characterized in that: It also includes a first adhesive layer, wherein the first adhesive layer is provided between the electrical component and the battery core; and / or, The packaging assembly also includes a second adhesive layer, which is arranged between the tab of the battery cell and the protection plate.

8. A battery, characterized in that: include: A battery cell, wherein the top of the battery cell comprises a top wall, a top seal fold connected to the top wall, and a pole ear, the top seal fold is bent toward the top wall, the pole ear is electrically connected to the top of the battery cell and extends out of the top seal fold; and The packaging assembly as described in any one of claims 1 to 7, wherein the packaging assembly is arranged on a side of the top wall or the top seal fold away from the top wall, the electrical component faces the top wall or the top seal fold, and the electrical connection portion is electrically connected to the tab.

9. The battery according to claim 8, characterized in that The battery core further includes a side wall connected to the top wall and a side seal fold connected to the side wall, wherein the side seal fold is bent toward the side wall.

10. The battery according to claim 8, characterized in that It also includes a second insulating protection plate, which is arranged on the top of the battery core and is used to wrap the packaging assembly.

11. The battery according to claim 8, characterized in that When the battery cells are a combination of at least two arranged side by side, the protection plate includes at least two sub-protection plates, one sub-protection plate is arranged corresponding to one battery cell, and a gap is formed between two adjacent sub-protection plates to avoid the top seal fold between two adjacent battery cells.

12. The battery according to claim 11, characterized in that The battery also includes at least two third adhesive layers, one of the third adhesive layers is arranged corresponding to one of the sub-protective plates, the third adhesive layer is connected to the side of the top seal fold away from the top wall along the width direction of the battery cell, the electrical components are connected to the top wall or the top seal fold through the third adhesive layer, and two adjacent third adhesive layers are inserted in the gap between two adjacent sub-protective plates so that the flexible soft board is connected to the top seal fold through the third adhesive layer.

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