Battery assembly and electronic device

Abstract

The invention discloses a battery assembly and electronic equipment, and belongs to the technical field of electronic equipment. The electronic equipment comprises a battery cell, the battery cell comprises a plurality of laminations, each lamination comprises a conducting plate and a diaphragm, each conducting plate comprises a positive plate and a negative plate, the diaphragm is folded in a single time to form a containing groove on the inner side, one of the positive plate and the negative plate is arranged in the containing groove, and the other one of the positive plate and the negative plate is arranged on the outer side of the diaphragm; wherein the plurality of laminations are stacked in the first direction, and at least one layer of diaphragm is arranged between the adjacent conducting strips in the first direction.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and specifically relates to a battery assembly and electronic equipment. Background Art

[0002] As the battery capacity of electronic devices continues to increase, how to balance battery energy density and battery safety has become a focus of major manufacturers.

[0003] In the related art, the battery is stacked using a winding process, that is, the positive electrode material, the negative electrode material, the separator and other layers are combined together by winding. Under this winding process, there will be a rounded corner area with a larger radius at the edge of the battery.

[0004] However, due to the bending of materials in the rounded corner area, there is a large stress difference between the inner and outer layers, which leads to the risk of deformation and lithium plating of the battery itself. In addition, there is a large gap in the rounded corner area, which cannot provide the above support. When external force impacts the rounded corner area, the battery cell will generate lateral shear force due to deformation, resulting in multi-layer shear damage in the battery cell, so that the battery has technical problems of poor safety and reliability. Summary of the invention

[0005] The present application aims to provide a battery assembly and an electronic device that can solve the technical problems of poor battery safety and reliability in related technologies.

[0006] In a first aspect, an embodiment of the present application proposes a battery assembly, which includes: a battery cell, the battery cell includes a plurality of laminates, the laminates include a conductive sheet and a diaphragm, the conductive sheet includes a positive electrode sheet and a negative electrode sheet, the diaphragm is folded in half once to form a receiving groove on the inner side, one of the positive electrode sheet and the negative electrode sheet is arranged in the receiving groove, and the other is arranged on the outer side of the diaphragm; wherein the plurality of laminates are stacked along a first direction, and at least one layer of diaphragm is included between adjacent conductive sheets in the first direction.

[0007] In a second aspect, an embodiment of the present application provides an electronic device, the electronic device comprising: a main body, the main body comprising a mounting groove; a battery assembly in the embodiment of the first aspect, the battery assembly being disposed in the mounting groove.

[0008] In this technical solution, different from the winding process in the prior art, in the laminate proposed in this application, each diaphragm only needs to be wound and folded once, and then the multiple wound laminates are stacked vertically, and then pressed and packaged. Under the process proposed in this application, the positive electrode sheet and the negative electrode sheet are still physically isolated by the diaphragm, and because the laminate is only wound once, only one end of the two ends of the battery cell in the lateral direction will have a rounded corner area. Compared with the winding process in the related art where there are rounded corner areas in all directions, this application reduces the coverage of the rounded corner area, thereby reducing the probability of shear damage problems in the battery cell, thereby improving the safety and reliability of the battery cell. On the other hand, compared with the winding process in the related art, the radius of the rounded corner area formed by a single folding of the present application is smaller, which can reduce the stress difference between the inner and outer layers, reduce the possibility of deformation risk and lithium precipitation risk of the battery cell, thereby further improving the safety and reliability of the battery assembly.

[0009] It can be seen that the present application solves the technical problems of poor battery safety and reliability existing in the related art by providing a single-folded laminate of the diaphragm and forming a battery cell through multiple laminates, thereby achieving the technical effect of reducing the failure rate of battery components and extending the service life of battery components.

[0010] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0012] Figure 1 A schematic diagram of the structure of a laminate according to an embodiment of the present application is shown;

[0013] Figure 2 An exploded view of a battery cell according to an embodiment of the present application is shown;

[0014] Figure 3 A schematic diagram of the structure of a battery cell according to an embodiment of the present application is shown;

[0015] Figure 4 A schematic diagram of the structure of a battery assembly according to an embodiment of the present application is shown;

[0016] Figure 5 A schematic diagram of the structure of an electronic device according to an embodiment of the present application is shown;

[0017] Figure 6 for Figure 5 A partial enlarged view of the electronic device in area A in the illustrated embodiment;

[0018] Figure 7 for Figure 5 A partial enlarged view of the electronic device in area B in the illustrated embodiment;

[0019] Figure 8 A schematic diagram of the structure of a battery assembly according to an embodiment of the present application is shown;

[0020] Fig. 9 A schematic diagram of the structure of an electronic device according to an embodiment of the present application is shown;

[0021] Fig.10 A schematic diagram of the structure of an electronic device according to an embodiment of the present application is shown;

[0022] Fig.11 A schematic diagram of the structure of an electronic device according to an embodiment of the present application is shown;

[0023] Fig.12 A schematic diagram of the structure of an electronic device according to an embodiment of the present application is shown;

[0024] Fig.13 for Fig.12 A cross-sectional view of the electronic device in the embodiment shown in the CC direction;

[0025] Fig.14 A schematic diagram of the structure of a battery assembly according to an embodiment of the present application is shown;

[0026] Fig.15 A schematic structural diagram of a battery assembly according to an embodiment of the present application is shown.

[0027] Reference numerals:

[0028] 100 battery assembly, 110 battery cell, 1102 first end, 1104 second end, 1106 boss, 112 stack, 1122 conductive sheet, 11222 positive electrode sheet, 11224 negative electrode sheet, 1124 diaphragm, 11242 receiving groove, 120 packaging component, 130 supporting component, 200 electronic device, 210 main body, 2102 mounting groove, 220 cover, 230 adhesive component. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0030] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0031] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] Combine the following Figures 1 to 15 A battery assembly and an electronic device according to embodiments of the present application are described.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments of the present application, a battery assembly 100 is provided, the battery assembly 100 includes: a battery cell 110, the battery cell 110 includes a plurality of laminates 112, the laminates 112 include a conductive sheet 1122 and a separator 1124, the conductive sheet 1122 includes a positive electrode sheet 11222 and a negative electrode sheet 11224, the separator 1124 is folded in half once to form a receiving groove 11242 on the inner side, one of the positive electrode sheet 11222 and the negative electrode sheet 11224 is disposed in the receiving groove 11242, and the other is disposed on the outer side of the separator 1124; wherein the plurality of laminates 112 are arranged along a first direction ( Figure 2 The conductive sheets 1122 are stacked as shown by arrow a in the middle, and at least one layer of diaphragm 1124 is included between the conductive sheets 1122 adjacent to each other in the first direction.

[0035] In this embodiment, a battery assembly 100 is proposed. The battery assembly 100 can be applied to an electronic device 200 to power the electronic device 200, so that the electronic device 200 can be used without a power source, thereby meeting the convenience requirements of the electronic device 200.

[0036] Specifically, the electronic device 200 includes at least one battery cell 110, which is used to store electrical energy and can be charged and discharged through chemical reactions. The battery cell 110 is composed of a plurality of laminates 112, which are stacked together along a first direction to form a complete battery cell 110.

[0037] Among them, each stack 112 includes two conductive sheets 1122, one of which is a positive electrode sheet 11222, and the other is a negative electrode sheet 11224. Each stack 112 also includes a diaphragm 1124. The diaphragm 1124 can effectively separate the positive electrode sheet 11222 and the negative electrode sheet 11224 to avoid a short circuit between the positive electrode sheet 11222 and the negative electrode sheet 11224. The diaphragm 1124 also has strong plasticity and the shape of the diaphragm 1124 can be changed by bending.

[0038] On this basis, the diaphragm 1124 is folded once during the assembly process, and the diaphragm 1124 after the single fold includes an inner and outer side, and the inner side encloses a receiving groove 11242. Among them, one of the positive electrode sheet 11222 and the negative electrode sheet 11224 is arranged in the receiving groove 11242, and the other is arranged on the outer side of the diaphragm 1124, and after the assembly is completed, the conductive sheet 1122 located on the outer side of the diaphragm 1124 is only arranged on one side of the diaphragm 1124.

[0039] After completing the assembly of a single stack 112, multiple stacks 112 are stacked together in sequence along a first direction, and finally packaged through a compression packaging process. After the stacking packaging is completed, at least one layer of diaphragm 1124 is interspersed between two adjacent conductive sheets 1122 to ensure that the two adjacent conductive sheets 1122 will not be short-circuited due to accidental contact.

[0040] In this regard, different from the winding process in the prior art, in the laminate 112 proposed in the present application, each diaphragm 1124 only needs to be wound and folded once, and then the multiple wound laminates 112 are stacked vertically, and then pressed and packaged. Under the process proposed in the present application, the positive electrode sheet 11222 and the negative electrode sheet 11224 are still physically isolated by the diaphragm 1124, and because the laminate 112 is only wound once, only one end of the two ends of the battery cell 110 in the lateral direction will have a rounded corner area. Compared with the winding process in the related art where there are rounded corner areas in all directions, the present application reduces the coverage of the rounded corner area, thereby reducing the probability of shear damage problems in the battery cell 110, thereby improving the safety and reliability of the battery cell 110. On the other hand, compared with the winding process in the related art, the radius of the rounded corner area formed by a single folding of the present application is smaller, which can reduce the stress difference between the inner and outer layers, reduce the possibility of deformation risk and lithium precipitation risk of the battery cell 110, thereby further improving the safety and reliability of the battery assembly 100.

[0041] It can be seen that the present application solves the technical problems of poor battery safety and reliability existing in the related art by providing a single-folded stack 112 with a diaphragm 1124 and forming a battery cell 110 through multiple stacks 112, thereby achieving the technical effect of reducing the failure rate of the battery assembly 100 and extending the service life of the battery assembly 100.

[0042] On the other hand, compared with the winding process in the related art, when the number of layers of the positive electrode and the negative electrode is the same, the single folding process proposed in the present application has a higher space utilization rate for the battery cell 110, which is beneficial to improving the theoretical capacity of the battery assembly 100.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, optionally, the negative electrode sheet 11224 is arranged in the receiving groove 11242, and the positive electrode sheet 11222 is arranged on the outside of the diaphragm 1124; in the first direction, the positive electrode sheet 11222 and the negative electrode sheet 11224 are alternately arranged, and a layer of diaphragm 1124 is arranged between adjacent positive electrode sheets 11222 and negative electrode sheets 11224.

[0044] In this embodiment, in each stack 112 , the negative electrode sheet 11224 is inserted into the receiving groove 11242 , the positive electrode sheet 11222 is attached to the outer side of the diaphragm 1124 , and the positive electrode sheet 11222 is located on the first side of the diaphragm 1124 .

[0045] After the assembly of the plurality of laminates 112 in the battery cell 110 is completed, the side of the plurality of laminates 112 including the positive electrode sheet 11222 is oriented toward the first direction or the direction opposite to the first direction, and then the plurality of laminates 112 are stacked together along the first direction to complete the assembly of a single battery cell 110. In the assembled battery cell 110, the positive electrode sheets 11222 and the negative electrode sheets 11224 are alternately arranged, and a layer of separator 1124 is interspersed between adjacent positive electrode sheets 11222 and negative electrode sheets 11224.

[0046] By uniformly inserting the negative electrode sheets 11224 in the plurality of laminates 112 into the receiving grooves 11242 and stacking the plurality of laminates 112 together in the same posture, on the one hand, the orderly distribution of the layers in the battery cell 110 can be achieved, thereby reducing the complexity of wiring in the battery cell 110. On the other hand, this assembly method can allow the fillet areas of the plurality of laminates 112 to face the uniform side of the battery cell 110, and the corresponding opening areas of the plurality of laminates 112 to face the other side of the battery cell 110, thereby reducing the possibility of the fillet areas being subjected to external impact by concentrating the plurality of fillet areas on the same side, thereby achieving the technical effect of optimizing the structural layout of the battery cell 110 and improving the safety and reliability of the battery assembly 100.

[0047] like Figure 3 and Figure 4 As shown, in some embodiments, optionally, the battery assembly 100 includes a plurality of battery cells 110 , and the plurality of battery cells 110 are arranged side by side.

[0048] In this embodiment, the battery assembly 100 includes a plurality of battery cells 110 , and the plurality of battery cells 110 are arranged side by side.

[0049] Specifically, a plurality of battery cells 110 may be arranged side by side in a single direction to form a battery assembly 100 including a single row or column of battery cells 110, or a plurality of battery cells 110 may be arranged side by side in two directions to form a battery assembly 100 including multiple columns and rows of battery cells 110, thereby expanding the capacity of the battery assembly 100. Specifically, the arrangement of the battery cells 110 is selected according to the size and power supply requirements of the electronic device 200, and this embodiment does not impose a rigid limitation.

[0050] Specifically, multiple battery cells 110 are arranged side by side along a second direction, and the second direction is perpendicular to the first direction, corresponding to the horizontal direction of the battery assembly 100, that is, the multiple battery cells 110 can be distributed on a plane perpendicular to the first direction. By arranging multiple battery cells 110 side by side along the horizontal direction, it is beneficial to improve the structural compactness of the battery assembly 100, thereby increasing the number of battery cells 110 in a limited space, thereby achieving the technical effect of improving the energy storage capacity of the battery assembly 100.

[0051] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, optionally, on the battery cell 110, the end where the bending area of ​​the diaphragm 1124 is located is the first end 1102 of the battery cell 110, and the end where the opening area of ​​the diaphragm 1124 is located is the second end 1104 of the battery cell 110; the battery assembly 100 includes two battery cells 110, the two battery cells 110 are symmetrically arranged, and the second ends 1104 of the two battery cells 110 are opposite.

[0052] In this embodiment, on each battery cell 110 , the bent regions of the plurality of separators 1124 are concentrated toward one side corresponding to the first end 1102 of the battery cell 110 . Correspondingly, the openings of the separators 1124 are concentrated toward the other side corresponding to the second end 1104 of the battery cell 110 .

[0053] On this basis, the battery assembly 100 includes two battery cells 110 , which are symmetrically arranged, and the first ends 1102 of the two battery cells 110 are opposite to each other, and the second ends 1104 of the corresponding two battery cells 110 are opposite to each other.

[0054] Among them, Figure 4 , Fig.11 , Fig.12 and Fig.13 As shown, based on the structural distribution characteristics of common electronic devices 200, the battery assembly 100 is mostly centrally arranged inside the electronic device 200, and the cover 220 used to shield the battery assembly 100 is supported by the left and right sides of the middle frame. The battery cover is bonded and supported by the adhesive components 230 on the support areas on the left and right sides of the middle frame, resulting in the structure of the cover 220 being similar to a single-plank bridge, that is, supported at both ends and empty in the middle. Therefore, when the cover 220 is impacted by external forces, the closer it is to the center area, the easier it is to be damaged. In addition, the center of gravity of the electronic device 200 is often on the central axis of the electronic device 200. Therefore, when the electronic device 200 falls and hits a sharp object, the cover 220 is at the highest risk of damage and failure ( Fig.11 , Fig.12 and Fig.13 In the figure, the area indicated by arrow g is also near the central axis of the electronic device 200.

[0055] In this regard, for the battery cell 110 proposed in the present application, due to the existence of the rounded corner area, the impact resistance of the first end 1102 is relatively weak, and the impact resistance of the second end 1104 is relatively strong. On this basis, by arranging the second ends 1104 of the two battery cells 110 relatively, a high-strength area with strong impact resistance can be formed at the intersection of the two battery cells 110 ( Figure 4 and Fig.13After the battery assembly 100 is installed in the electronic device 200, the high-strength area of ​​the battery assembly 100 can be close to the risk area on the cover 220, thereby reducing the possibility of damage to the cover 220 on the back of the battery assembly 100, thereby achieving the technical effect of improving the safety and reliability of the battery assembly 100.

[0056] like Figure 8 , Fig. 9 , Fig.10 , Fig.12 and Fig.13 As shown, in some embodiments, optionally, along the first direction, the second ends 1104 of two battery cells 110 in the battery assembly 100 are staggered.

[0057] In this embodiment, the two battery cells 110 in the battery assembly 100 are staggered in the first direction, that is, after assembly, the two battery cells 110 are interlaced together, and when the battery assembly 100 is observed along the first direction, the two battery cells 110 can be observed to be alternately distributed.

[0058] Among them, compared with the area where the stack 112 is located, the intersection area between the two battery cells 110 is a weak area where the load-bearing capacity intersects. If two regularly shaped battery cells 110 are arranged side by side, the weak area will be concentrated in the local area between the two battery cells 110. At this time, if an external force acts between the two battery cells 110, the battery assembly 100 will collapse or even be punctured.

[0059] In this regard, by staggering the two battery cells 110 together, the weak areas between the two battery cells 110 can be staggered to avoid the above-mentioned weak areas being concentrated between the two battery cells 110 along the first direction, and the partial weak areas staggered into one of the battery cells 110 can be structurally reinforced by the laminates 112 on its upper and lower sides. When receiving external force, the laminates 112 on its upper and lower sides can effectively resist the force to reduce the probability of damage to the battery assembly 100, thereby improving the structural strength of the battery assembly 100 and reducing the failure rate of the battery assembly 100.

[0060] Specifically, matching concave-convex structures can be provided on the two battery cells 110 so that the two battery cells 110 can be inserted together through the concave-convex structures during assembly, thereby forming a staggered design. The concave-convex structures can be distributed in the height direction of the battery assembly 100 or in the width direction of the battery assembly 100.

[0061] In one embodiment of the present application, two battery cells 110 in the battery assembly 100 are projected along a first direction to obtain a projection image. On the projection image, the second ends 1104 of the two battery cells 110 respectively form two boundary lines, specifically including a first boundary line ( Figure 8 The arrow c in the middle shows the second boundary line ( Figure 8 As shown by arrow d in the figure, the first boundary line and the second boundary line correspond to the boundary area of ​​the two battery cells 110. Fig. 9 As shown, when the second ends 1104 of the two battery cells 110 are closely attached together, the two boundary lines overlap.

[0062] On this basis, through size design and shape design, the first boundary line and the second boundary line are at least partially offset from the center line ( Fig. 9 As shown by the middle arrow e, when the battery is centrally arranged inside the electronic device 200, the risk area on the cover 220 is close to the center line. By at least partially offsetting the boundary line from the center line, the aforementioned high-strength area can avoid the risk area on the cover 220.

[0063] The size design is achieved by designing two battery cells 110 with different widths so that the boundary line avoids the center line.

[0064] Although the high-strength area has a greater ability to resist impact than the rounded corner area, the high-strength area can provide poor support for the cover 220 compared to the middle section of the battery cell 110. When the risk area on the cover 220 is impacted, it will still collapse, break, and other problems. In this regard, through the above-mentioned misalignment design, the middle section of the battery cell 110 can be aligned with the risk area, thereby increasing the support area of ​​the battery cell 110 for the cover 220, thereby achieving the technical effect of improving the practicality of the battery assembly 100 and improving the safety and reliability of the electronic device 200.

[0065] In one embodiment of the present application, the two battery cells 110 are designed in such a way that the boundary lines and the center lines are at least partially offset.

[0066] Specifically, on the projected image, the two battery cells 110 are symmetrical about their centers, a part of the battery cell 110 makes the boundary line avoid the center line by crossing the center line, and another part of the battery cell 110 makes the boundary line away from the center line by moving away from the center line.

[0067] By providing the centrally symmetrical battery cells 110, on the one hand, the space utilization of the two battery cells 110 can be improved, thereby increasing the power of the battery assembly 100 without increasing the space occupied by the battery assembly 100. On the other hand, the centrally symmetrical design allows the battery cells 110 to be processed and formed by the same process, without the need to open molds and design separate molds for the battery cells 110 on both sides, thereby achieving the technical effect of reducing the process complexity of the battery assembly 100 and reducing the production cost of the battery assembly 100.

[0068] like Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13 As shown, in some embodiments, optionally, the second end 1104 of the battery cell 110 includes a boss 1106 ; the bosses 1106 of the two battery cells 110 are staggered.

[0069] Fig.10 In FIG. 1 , arrow f shows the direction of force when the cover body 220 is subjected to impact.

[0070] In this embodiment, following the previous embodiment, a portion of the second end 1104 of the battery cell 110 is protruded outward to form a boss 1106 .

[0071] When two battery cells 110 are symmetrically arranged together, one of the battery cells 110 extends the boundary line to the other side of the center line through the boss 1106, so that the boss 1106 can provide support for the risk area on the cover 220. Correspondingly, a gap is formed in the area of ​​the battery cell 110 where the boss 1106 is not arranged, and the boss 1106 of the other battery cell 110 can be arranged across the center line in the gap, so that the boss 1106 can also provide support for the risk area on the cover 220, thereby achieving the technical effect of improving the practicality of the battery assembly 100 and improving the safety and reliability of the electronic device 200.

[0072] like Fig.14 and Fig.15 As shown, in some embodiments, optionally, the battery assembly 100 further includes: a support component 130, the support component 130 is disposed between the two battery cells 110, the support component 130 is connected to the second end 1104 of the battery cell 110, and the support component 130 is used to provide support for the second end 1104 of the battery cell 110.

[0073] In this embodiment, a support component 130 is further disposed between two symmetrically disposed battery cells 110. The second ends 1104 of the two battery cells 110 are respectively connected to the middle support component 130, and can be fixedly connected to the support component 130 or rest on the support component 130. After assembly, the support component 130 can provide support for the second ends 1104 of the battery cells 110 in the first direction.

[0074] Specifically, the area between the two battery cells 110 is a weak area because it cannot be supported by the laminate 112 body. If the weak area is subjected to external impact, the battery assembly 100 may collapse or even be punctured. At the same time, compared with the middle section of the battery cell 110, the second end 1104 of the battery cell 110 has a weaker ability to resist impact. If the second end 1104 of the battery cell 110 is subjected to a large force in the first direction, collapse and breakage problems may also occur.

[0075] In this regard, by setting a support component 130 between the two battery cells 110, the second ends 1104 of the two battery cells 110 can be structurally reinforced. Specifically, the support component 130 resists the force in the first direction, thereby reducing the probability of damage to the battery assembly 100, thereby achieving the technical effect of improving the structural strength of the battery assembly 100 and reducing the failure rate of the battery assembly 100.

[0076] In some embodiments, optionally, the support component 130 includes: an insulating filler, which fills the gap between the two battery cells 110; or an insulating plate, which separates the two battery cells 110, and the second end 1104 of the battery cell 110 is connected to the insulating plate; or an insulating bracket, and the second end 1104 of the battery cell 110 is inserted into the insulating bracket.

[0077] In this embodiment, if Fig.14 As shown, an insulating filler can be selected as the supporting component 130. The insulating filler includes rubber, glue or foam. After the two battery cells 110 are installed at the predetermined position, the gap between the two battery cells 110 can be filled with the insulating filler without affecting the normal use of the two battery cells 110. When subjected to external force, the insulating filler can replace the second end 1104 of the battery cell 110 to share part of the force, so as to improve the structural strength of the battery assembly 100.

[0078] Specifically, Fig.15 As shown, an insulating plate can also be selected as the supporting component 130, and the second end 1104 of the battery cell 110 is attached to the insulating plate by glue or double-sided tape. After assembly, the insulating plate separates the second ends 1104 of the two battery cells 110. When subjected to external force, the second end 1104 of the battery cell 110 attached to the insulating plate can transfer part of the force to the insulating plate, so that the insulating plate can bear part of the force instead of the laminate 112, thereby improving the structural strength of the battery assembly 100.

[0079] Specifically, Fig.14 As shown, an insulating bracket can also be selected as the supporting component 130, and the second end 1104 of the battery cell 110 includes a plurality of opening structures, and a plurality of slots adapted to the above-mentioned opening structures are provided on the corresponding insulating bracket. During the process of assembling the battery cell 110, the second end 1104 of the battery cell 110 can be plugged into one side of the insulating bracket, so as to improve the assembly accuracy of the battery cell 110 through the insulating bracket. At the same time, inserting the battery cell 110 and the bracket together can enable the bracket to share the force exerted on the battery cell 110, thereby providing effective support for the battery cell 110, thereby achieving the technical effect of improving the structural strength of the battery assembly 100.

[0080] like Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, in some embodiments, optionally, the battery assembly 100 further includes: a packaging component 120 , the battery cell 110 is disposed in the packaging component 120 , and the packaging component 120 wraps the battery cell 110 .

[0081] In this technical solution, multiple stacked laminations 112 are packaged through a packaging component 120. After the packaging process is completed, the packaging component 120 can wrap the battery cell 110, so that the multiple laminations 112 fit tightly together, avoiding the disintegration of the multiple laminations 112, and thus achieving the technical effect of improving the structural stability of the battery cell 110.

[0082] Furthermore, the packaging component 120 can also provide insulation protection, thereby reducing the possibility of leakage problems in the battery cell 110 , thereby achieving the technical effect of improving the safety and reliability of the battery assembly 100 .

[0083] like Fig.10 , Fig.11 and Fig.12 As shown, in some embodiments of the present application, an electronic device 200 is provided, and the electronic device 200 includes: a main body 210, the main body 210 includes a mounting groove 2102; as in any of the above embodiments of the battery assembly 100, the battery assembly 100 is arranged in the mounting groove 2102.

[0084] In this technical solution, an electronic device 200 is proposed, which includes the battery assembly 100 in any of the above embodiments. Therefore, the electronic device 200 has the advantages of the battery assembly 100 in any of the above technical solutions, and can achieve the technical effects that can be achieved by the battery assembly 100 in any of the above technical solutions. To avoid repetition, it will not be repeated here.

[0085] On this basis, the electronic device 200 also includes a body 210 , which is the main frame structure of the electronic device 200 . An installation groove 2102 is formed in the body 210 , and the battery assembly 100 is located inside the installation groove 2102 after assembly is completed.

[0086] like Fig.10 , Fig.11 and Fig.12 As shown, in some embodiments, optionally, the electronic device 200 further includes: a cover 220, the cover 220 covers the mounting groove 2102; an adhesive component 230, disposed between the cover 220 and the body 210, in the width direction ( Fig.10 (as shown by the middle arrow h), the battery assembly 100 is located between the two adhesive components 230.

[0087] In this embodiment, the battery assembly 100 includes two battery cells 110 . The two battery cells 110 are symmetrically arranged, and the first ends 1102 of the two battery cells 110 are opposite to each other, and the second ends 1104 of the corresponding two battery cells 110 are opposite to each other.

[0088] Among them, Figure 4 , Fig.11 , Fig.12 and Fig.13 As shown, based on the structural distribution characteristics of common electronic devices 200, the battery assembly 100 is mostly centrally arranged inside the electronic device 200, and the cover 220 used to shield the battery assembly 100 is supported by the left and right sides of the middle frame. The battery cover is bonded and supported by the adhesive components 230 on the support areas on the left and right sides of the middle frame, resulting in the structural form of the cover 220 being similar to a single-plank bridge, that is, supported at both ends and empty in the middle. Therefore, when the cover 220 is impacted by external forces, the closer it is to the center area, the easier it is to be damaged. In addition, the center of gravity of the electronic device 200 is often on the central axis of the electronic device 200. Therefore, when the electronic device 200 falls and hits a sharp object, the highest risk area for damage and failure of the cover 220 is also near the central axis of the electronic device 200.

[0089] In this regard, for the battery cell 110 proposed in the present application, due to the existence of the rounded corner area, the impact resistance of the first end 1102 is relatively weak, and the impact resistance of the corresponding second end 1104 is relatively strong. On this basis, by arranging the second ends 1104 of the two battery cells 110 relatively, a high-strength area with strong impact resistance can be formed at the intersection of the two battery cells 110. After the battery assembly 100 is installed in the electronic device 200, the high-strength area of ​​the battery assembly 100 can be close to the risk area on the cover 220, thereby reducing the possibility of damage to the cover 220 on the back of the battery assembly 100, thereby achieving the technical effect of improving the safety and reliability of the battery assembly 100.

[0090] The electronic device 200 may be a terminal or other device other than a terminal. For example, the electronic device 200 may be a mobile phone, a tablet computer, a laptop computer, a PDA, a vehicle-mounted electronic device 200, a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (PDA), etc. It may also be a personal computer (PC), a television (TV), a teller machine or a self-service machine, etc., which is not specifically limited in the embodiments of the present application.

[0091] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0092] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery assembly, characterized in that: include: A battery cell, wherein the battery cell comprises a plurality of laminates, the laminates comprise a conductive sheet and a separator, the conductive sheet comprises a positive electrode sheet and a negative electrode sheet, the separator is folded in half once to form a receiving groove on the inner side, one of the positive electrode sheet and the negative electrode sheet is disposed in the receiving groove, and the other is disposed on the outer side of the separator; Wherein, a plurality of the laminated sheets are stacked along a first direction, and at least one layer of the diaphragm is included between the conductive sheets adjacent to each other in the first direction.

2. The battery assembly according to claim 1, characterized in that: The negative electrode sheet is arranged in the containing groove, and the positive electrode sheet is arranged outside the diaphragm; In the first direction, the positive electrode sheets and the negative electrode sheets are arranged alternately, and a layer of the separator is arranged between adjacent positive electrode sheets and negative electrode sheets.

3. The battery assembly according to claim 1, characterized in that: The battery assembly includes a plurality of battery cells, and the plurality of battery cells are arranged side by side.

4. The battery assembly according to claim 3, characterized in that: On the battery cell, the end where the bending area of ​​the diaphragm is located is the first end of the battery cell, and the end where the opening area of ​​the diaphragm is located is the second end of the battery cell; The battery assembly includes two battery cells, the two battery cells are symmetrically arranged, and the second ends of the two battery cells are opposite to each other.

5. The battery assembly according to claim 4, characterized in that: Along the first direction, the second ends of two battery cells in the battery assembly are arranged alternately.

6. The battery assembly according to claim 5, characterized in that: The second end of the battery cell comprises a protrusion; the protrusions of the two battery cells are staggered.

7. The battery assembly according to claim 4, characterized in that: Also includes: A support component is provided between the two battery cells, the support component is connected to the second end of the battery cell, and the support component is used to provide support for the second end of the battery cell.

8. The battery assembly according to claim 7, characterized in that: The supporting member comprises: An insulating filler, wherein the insulating filler fills the gap between the two battery cells; or an insulating plate, wherein the insulating plate separates the two battery cells, and the second end of the battery cell is connected to the insulating plate; or An insulating bracket, wherein the second end of the battery cell is plugged into the insulating bracket.

9. The battery assembly according to any one of claims 1 to 8, characterized in that: Also includes: A packaging component, the battery cell is arranged in the packaging component, and the packaging component wraps the battery cell.

10. An electronic device, characterized in that: include: A body, the body comprising a mounting slot; The battery assembly according to any one of claims 1 to 9, wherein the battery assembly is disposed in the mounting groove.

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