Battery

Abstract

The utility model relates to the technical field of batteries, and discloses a battery, which comprises a battery cell main body and a protection plate assembly, the top of the battery cell main body is provided with a top sealing structure along the length direction of the battery cell main body, and the protection plate assembly is arranged on one side of the top sealing structure. The top end of the top sealing structure is bent towards one side close to the protection plate assembly to form a bent part, the protection plate assembly is positioned below the bent part, the tail end of the bent part extends along the thickness direction of the battery cell main body to form a tab, and the tab is electrically connected with the protection plate assembly. The top sealing structure has the following technical effects that the bending part is formed at the top end of the top sealing structure, and the protection plate assembly is arranged in an area below the bending part, so that the length size of the battery can be reduced, the overall size of the battery is favorably reduced, and the capacity of the battery is favorably improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the battery technical field, concretely relates to a battery. BACKGROUND

[0002] In wearable devices, such as AR glasses, VR glasses and the like, due to the space limitation of the device itself, the battery assembled in the device needs to have a small volume. The head of the existing wearable device battery is usually provided with a top sealing structure. Due to the small volume of such a battery, the operation is difficult in the production process, therefore, the top sealing structure is usually not subjected to bending treatment, which causes the top sealing structure to occupy too much length size of the battery, which is not conducive to improving the miniaturization of the battery and also not conducive to improving the capacity of the battery. SUMMARY

[0003] In order to solve the deficiencies of the prior art, the utility model provides a battery, which forms a bending part at the top end of the top sealing structure and places the protection plate assembly below the bending part, so as to reduce the length size of the battery, thereby being conducive to reducing the overall volume of the battery and improving the capacity of the battery.

[0004] The technical effects achieved by the utility model are realized through the following technical aspects:

[0005] The utility model provides a battery, which comprises a battery core body and a protection plate assembly, the top of the battery core body is provided with a top sealing structure along the length direction of the battery core body, the protection plate assembly is arranged on one side of the top sealing structure, the top end of the top sealing structure is bent to form a bending part towards the side close to the protection plate assembly, the protection plate assembly is located below the bending part, the end of the bending part extends an electrode lug in the thickness direction of the battery core body, and the electrode lug is electrically connected with the protection plate assembly.

[0006] As a further description of the utility model technical scheme, the bending angle of the bending part is 70°-110°.

[0007] As a further description of the utility model technical scheme, the width of the bending part is 1 / 10-1 / 6 of the total width of the top sealing structure.

[0008] As a further description of the utility model technical scheme, the width of the bending part is 0.1-1.2mm.

[0009] As a further description of the utility model technical scheme, the electrode lug comprises a first connecting end, a second connecting end and a backfolding part, the backfolding part is connected between the first connecting end and the second connecting end, the second connecting end is located below the first connecting end, the first connecting end is connected with the bending part, and the second connecting end is electrically connected with the protection plate assembly.

[0010] As a further description of the utility model technical scheme, the battery further includes a soldering pad, and the second connecting end is connected with the protection plate assembly through the soldering pad.

[0011] As a further description of the utility model technical scheme, the protection plate assembly includes a first protection plate and a second protection plate which are sequentially stacked on the top of the battery cell main body, and the second protection plate is electrically connected with the second connecting end.

[0012] As a further description of the utility model technical scheme, a fixed adhesive layer is connected between the first protection plate and the battery cell main body.

[0013] As a further description of the utility model technical scheme, the battery further includes an insulating adhesive paper, and the insulating adhesive paper is attached to the outside of the battery cell main body and the protection plate assembly.

[0014] As a further description of the utility model technical scheme, opposite sides of the battery cell main body are further provided with side sealing structures, the top sealing structure is connected between the opposite two side sealing structures, an accommodating space is formed between the top sealing structure and the side sealing structures, and the protection plate assembly is located in the accommodating space.

[0015] In summary, the utility model has at least the following advantages:

[0016] The battery provided by the utility model forms a bending part at the top end of the top sealing structure, and the protection plate assembly is arranged in the area below the bending part, the tab extending out of the bending part along the thickness direction of the battery cell main body is electrically connected with the protection plate assembly, the length dimension of the battery is effectively reduced, thereby, the overall volume of the battery is reduced to improve the miniaturization of the battery, and the capacity of the battery is improved to improve the endurance of wearable equipment. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the battery of the utility model embodiment 1;

[0018] Figure 2 It is a partial sectional view of the battery of the utility model embodiment 1;

[0019] Figure 3 It is a partial structure schematic view of the battery of the utility model embodiment 1;

[0020] Figure 4 It is an explosion schematic view of the battery of the utility model embodiment 2;

[0021] Figure 5 It is Figure 4 It is an enlarged view of middle A part;

[0022] Figure 6 Figure 2 is a partial structure schematic diagram of a battery according to an embodiment of the present application;

[0023] Figure 7 Figure 3 is a partial structure schematic diagram of a battery according to an embodiment of the present application;

[0024] Figure 8 Figure 4 is a structure schematic diagram of an insulating adhesive paper according to an embodiment of the present application.

[0025] Markings in the figure:

[0026] 1, cell main body; 11, top sealing structure; 111, bending part; 12, side sealing structure; 13, accommodating space;

[0027] 2, protection plate assembly; 21, first protection plate; 22, second protection plate;

[0028] 3, tab; 31, first connecting end; 32, second connecting end; 33, back bending part;

[0029] 4, solder pad; 5, fixed adhesive layer; 6, insulating adhesive paper. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. The described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0032] Embodiment 1

[0033] Reference Figures 1 to 3The battery provided by the embodiment comprises a cell body 1 and a protection plate assembly 2. One side of the top of the cell body 1 is provided with a top sealing structure 11 along the length direction of the cell body 1, and the top sealing structure 11 is plate-shaped and perpendicular to the top surface of the cell body 1. The protection plate assembly 2 is arranged on one side of the top sealing structure 11 and above the top surface of the cell body 1. The top end of the top sealing structure 11 is bent to form a bending part 111 towards the side close to the protection plate assembly 2, the protection plate assembly 2 is below the bending part 111, and the end of the bending part 111 is provided with a tab 3 extending along the thickness direction of the cell body 1, and the tab 3 is electrically connected with the protection plate assembly 2.

[0034] It can be understood that the tab 3 extends from the end of the bending part 111 in a direction parallel to the top surface of the cell body 1 and is electrically connected with the protection plate assembly 2, so that the protection plate assembly 2 and the tab 3 are both arranged in the area on one side of the top sealing structure 11 and do not protrude above the bending part 111. The bending size of the bending part 111 corresponds to the size reduced in the length direction of the battery. By forming the bending part 111 at the top end of the top sealing structure 11 and arranging the protection plate assembly 2 below the area of the bending part 111, the tab 3 extending along the thickness direction of the cell body 1 on the bending part 111 is electrically connected with the protection plate assembly 2, so that the size in the length direction of the battery is effectively reduced. On the one hand, the overall volume of the battery can be reduced, and the miniaturization of the battery is improved, so that the volume of the battery compartment can be reduced, the volume of the wearable device is further reduced, and the miniaturization of the wearable device is realized. On the other hand, without changing the volume of the battery compartment, the size reduction in the length direction of the battery can leave a part of the space of the battery compartment, and this part of the space can be compensated on the cell body 1 to provide expansion space for the cell body 1. By reasonably increasing the volume of the cell body 1, the capacity of the battery can be improved to improve the endurance of the wearable device.

[0035] As one of the embodiments, the thickness direction of the protection plate assembly 2 can be perpendicular to the thickness direction of the cell body 1, that is, the protection plate assembly 2 is arranged above the top surface of the cell body 1 in a horizontal state. It should be noted that the width of the protection plate assembly 2 is less than or equal to the thickness of the cell body 1, that is, the protection plate assembly 2 does not increase the thickness size of the cell body 1.

[0036] In some embodiments, the bending angle α of the bending part 111 is 70°-110°, and preferably 90°. The bending part 111 bent at 90° can reduce the size in the length direction of the battery to the greatest extent. Since the bending part 111 is parallel to the tab 3, the mechanical strength of the tab 3 is improved, and the fracture of the tab 3 is prevented to a certain extent.

[0037] In some embodiments, the width D1 of the bent portion 111 is 1 / 10-1 / 6, preferably 1 / 8-1 / 7 of the total width D2 of the top sealing structure 11. It can be understood that the bent portion 111 is formed by bending the top end of the top sealing structure 11 at a position of 1 / 10-1 / 6 of the total width D2 of the top sealing structure 11, and the width D1 of the bent portion 111 is the reduced length distance in the length direction of the battery. By setting the width of the bent portion 111, the bent portion 111 is formed at a reasonable position of the top sealing structure 11, which can effectively reduce the size in the length direction of the battery and facilitate the bending process of the top sealing structure 11, thereby avoiding increasing the production process difficulty of the battery.

[0038] In some embodiments, the width D1 of the bent portion 111 can be 0.1-1.2 mm, and in the present embodiment, D1 is 0.3 mm.

[0039] The battery of the present embodiment can effectively reduce the length size of the battery by forming a bent portion at the top end of the top sealing structure, thereby reducing the overall volume of the battery to improve the miniaturization of the battery, and also facilitating the improvement of the capacity of the battery to improve the endurance of the wearable device. By setting the bending angle of the bent portion, the size in the length direction of the battery can be reduced to the greatest extent, and the mechanical strength of the tab can also be improved to prevent the tab from breaking. By setting the width of the bent portion, the size in the length direction of the battery can be effectively reduced, and the bending process of the top sealing structure is facilitated, thereby facilitating the reduction of the production process difficulty of the battery.

[0040] Embodiment 2

[0041] As a further optimization of Embodiment 1, reference is made to Figures 4 to 6 The tab 3 includes a first connecting end 31, a second connecting end 32, and a backfolding portion 33. The backfolding portion 33 is U-shaped and connected between the first connecting end 31 and the second connecting end 32. The second connecting end 32 is located below the first connecting end 31, the first connecting end 31 is connected with the bent portion 111, and the second connecting end 32 is electrically connected with the protection plate assembly 2.

[0042] In some embodiments, a tab adhesive can be attached to the first connecting end 31, and the tab adhesive is located between the first connecting end 31 and the bent portion 111, which can enhance the mechanical strength of the connection between the first connecting end 31 and the bent portion 111, protect the first connecting end 31, and further prevent the first connecting end 31 from breaking.

[0043] The battery further includes a solder pad 4, which is U-shaped, and the second connecting end 32 is connected with the protection plate assembly 2 through the solder pad 4. Since the second connecting end 32 is located below the first connecting end 31, the solder pad 4 connected with the second connecting end 32 is also located below the first connecting end 31, thereby ensuring that the arrangement of the solder pad 4 will not increase the length size of the battery.

[0044] The protection plate assembly 2 comprises a first protection plate 21 and a second protection plate 22 which are sequentially stacked on the top of the cell body 1, and the second connecting end 32 is connected to the upper surface of the second protection plate 22 through the welding pad 4. In the embodiment, the first protection plate 21 is a hard protection plate, and the second protection plate 22 is a soft protection plate, wherein the side edges of the second protection plate 22 extend upward along the length direction of the cell body 1 to form an electrical connecting end for electrical connection with a wearable device.

[0045] In some embodiments, the opposite sides of the cell body 1 are also provided with side sealing structures 12, and the top sealing structure 11 is connected between the opposite two side sealing structures 12, and the accommodation space 13 is formed between the top sealing structure 11 and the side sealing structure 12, and the protection plate assembly 2 is located in the accommodation space 13.

[0046] The battery of the embodiment can enhance the mechanical strength of the connection between the first connecting end and the bending part by pasting the tab glue on the first connecting end, and can protect the first connecting end and further prevent the first connecting end from being broken. By arranging the second connecting end below the first connecting end, the welding pad connected with the second connecting end is also located below the first connecting end, so that the arrangement of the welding pad does not increase the length of the battery, and the effective compression of the battery size is ensured.

[0047] Embodiment 3

[0048] As a further optimization of embodiment 2, reference is made to Figures 7 to 8 The first protection plate 21 and the cell body 1 are connected with a fixed adhesive layer 5, which is mainly used for the fixation of the protection plate assembly 2. The fixed adhesive layer 5 can be a hot melt adhesive or a foam double-sided adhesive with certain elasticity or filling capacity. The hot melt adhesive has strong plasticity and can be flexibly adapted to different sizes and shapes of the first protection plate 21, and the hot melt adhesive has strong adhesion to ensure the stable connection between the first protection plate 21 and the cell body 1. The foam double-sided adhesive has high elasticity and can adapt to the gap distance between different first protection plates 21 and cell bodies 1, and has strong applicability. The arrangement of the fixed adhesive layer 5 can prevent the protection plate assembly 2 from shaking or deviating during the use or transportation of the battery, so as to improve the connection stability of the protection plate assembly 2.

[0049] In some embodiments, the battery further comprises an insulating tape 6, which is attached to the outside of the cell body 1 and the protection plate assembly 2, so that the protection plate assembly 2 and the tab 3 and other devices are wrapped in the insulating tape 6, thereby improving the safety of the battery, and the insulating tape 6 can further consolidate the connection between the protection plate assembly 2 and the cell body 1, thereby improving the connection stability of the battery. The connection and fixation between the protection plate assembly 2 and the cell body 1 are realized by the combination of the fixing adhesive layer 5 and the insulating tape 6, which can adapt to different types and specifications of protection plate assemblies 2, such as SIP plates, combination plates, soft plates, and combinations of modules, and has strong applicability.

[0050] The battery of the embodiment can fix the protection plate assembly on the cell body by arranging the fixing adhesive layer between the first protection plate and the cell body, so as to prevent the position deviation of the protection plate assembly, and improve the connection stability of the battery. The protection plate assembly and the tab and the like are protected by arranging the insulating tape, so as to improve the safety of the battery, and the connection between the protection plate assembly and the cell body is further consolidated, thereby improving the connection stability of the battery.

[0051] In the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In the description of the present application, it should be pointed out that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly used when the product of the present application is used, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0053] In the utility model, unless another definite provision and limitation, first feature is above or below second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through additional feature between them.

[0054] Although the description of the utility model is combined with above specific embodiment, it is obvious that many substitutions, modifications and changes can be made according to the above-mentioned content by the person skilled in the art. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A battery, characterized by, The application relates to a battery cell main body (1) and a protection plate assembly (2), the top of the battery cell main body (1) is provided with a top sealing structure (11) along the length direction of the battery cell main body (1), the protection plate assembly (2) is arranged on one side of the top sealing structure (11), the top end of the top sealing structure (11) is bent to form a bending part (111) towards the side close to the protection plate assembly (2), the protection plate assembly (2) is located below the bending part (111), the tail end of the bending part (111) extends outwards along the thickness direction of the battery cell main body (1) and is provided with a tab (3), and the tab (3) is electrically connected with the protection plate assembly (2).

2. The battery of claim 1, wherein, The bending angle of the bending part (111) is 70-110 degrees.

3. The battery of claim 1, wherein, The width of the bending part (111) is 1 / 10-1 / 6 of the total width of the top sealing structure (11).

4. The battery of claim 3, wherein, The width of the bending part (111) is 0.1-1.2 mm.

5. The battery of claim 1, wherein, The tab (3) comprises a first connecting end (31), a second connecting end (32) and a backfolding part (33), the backfolding part (33) is connected between the first connecting end (31) and the second connecting end (32), the second connecting end (32) is located below the first connecting end (31), the first connecting end (31) is connected with the bending part (111), and the second connecting end (32) is electrically connected with the protection plate assembly (2).

6. The battery of claim 5, wherein, A solder pad (4) is further arranged, and the second connecting end (32) is connected with the protection plate assembly (2) through the solder pad (4).

7. The battery of claim 5, wherein, The protection plate assembly (2) comprises a first protection plate (21) and a second protection plate (22) which are sequentially stacked on the top of the battery cell main body (1), and the second protection plate (22) is electrically connected with the second connecting end (32).

8. The battery of claim 7, wherein, A fixing adhesive layer (5) is arranged between the first protection plate (21) and the battery cell main body (1).

9. The battery of claim 1, wherein, An insulating adhesive paper (6) is further arranged, and the insulating adhesive paper (6) is attached to the outside of the battery cell main body (1) and the protection plate assembly (2).

10. The battery of claim 1, wherein, Opposite sides of the battery cell main body (1) are further provided with side sealing structures (12), the top sealing structure (11) is connected between the two opposite side sealing structures (12), an accommodating space (13) is formed between the top sealing structure (11) and the side sealing structures (12), and the protection plate assembly (2) is located in the accommodating space (13).

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