Battery and electronic equipment
By optimizing the packaging structure of the lithium-ion battery, the bending design of the packaging part and the placement of the extension part of the connector, the problem of improving the battery energy density is solved, and a more compact battery structure and higher energy density are achieved.
Patent Information
- Application Number
- CN202421104059.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-05-20
AI Technical Summary
During the packaging process, the existing lithium-ion batteries account for a large proportion of battery structural space and it is difficult to increase the energy density.
By designing the structure of the battery cell and the package, the second area of the package part is bent relative to the first area, and the extension part of the connector outside the package part can be concentratedly placed in the projection of the first area of the package part, reducing the battery's Space proportion.
The compactness of the battery structure is achieved, further reducing the battery space proportion, thereby increasing the battery energy density.
Smart Images
Figure CN222530568U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of battery technology, and in particular to a battery and an electronic device. Background Art
[0002] With the development of lithium-ion battery technology, users are increasingly pursuing products with fast charging and long battery life, which will inevitably drive the development of lithium-ion batteries in the direction of fast charging while taking into account high energy density. Most manufacturers improve the energy density of batteries by changing the battery structure.
[0003] In the prior art, during the packaging process of the battery, the packaging member wraps around the battery cell, and the edge area of the packaging member after heat pressing forms a packaging portion.
[0004] However, due to the existence of the packaging part, the battery structure occupies a large space and the energy density of the battery is difficult to improve. Utility Model Content
[0005] The present application provides a battery and an electronic device, which can improve the energy density of the battery and the electronic device.
[0006] In order to achieve the above objectives, this application adopts the following technical solutions:
[0007] The present application provides a battery, comprising:
[0008] A battery cell, comprising a body and a connector, wherein the body has a tab connector, one end of the connector is electrically connected to the tab connector, the tab connector and the connector at least partially overlap to form a connection area, and the other end of the connector extends toward a side away from the body;
[0009] A packaging member, used to package the battery cell, wherein a portion of the packaging member forms a packaging portion on the top of the battery cell on a side close to the connector; the connector has an extension portion protruding from an edge of the packaging portion;
[0010] The packaging portion has a first area and a second area, the second area is bent relative to the first area, the second area overlaps with a portion of the first area, the connection area is located in the first area, and along the thickness direction of the battery cell, the extension portion overlaps with a portion of the first area.
[0011] In the battery provided by the present application, the second area of the packaging part is bent relative to the first area, which reduces the space occupied by the packaging part, and accordingly, the energy density of the battery can be improved. In addition, along the thickness direction of the battery cell, the connector and the first area partially overlap, and the extension of the connector outside the packaging part can be concentrated in the projection of the first area of the packaging part. The structure of the battery is more compact, and the space occupied by the battery is further reduced, thereby improving the energy density of the battery.
[0012] As a possible implementation manner, the extension portion has a third region, and the third region is bent relative to the second region;
[0013] Along the thickness direction of the battery core, the third region and the first region at least partially overlap.
[0014] As a possible implementation manner, along the thickness direction of the battery core, the third region and the second region partially overlap.
[0015] As a possible implementation manner, the third region is adjacent to the top surface of the battery core along a thickness direction intersecting the battery core, and the third region and the second region have a first angle;
[0016] The first angle is greater than or equal to 80°.
[0017] As a possible implementation manner, the third region and the second region are parallel.
[0018] As a possible implementation manner, one end of the third region away from the packaging portion extends toward a side away from the body, and an end of the third region away from the packaging portion protrudes from an edge of the first region away from the body.
[0019] As a possible implementation manner, the extension portion further has a fourth region, the fourth region is bent relative to the third region, and the fourth region and the third region have a second angle;
[0020] The fourth region and the top of the battery cell are opposite to each other and have a distance therebetween along the extending direction of the third region;
[0021] The second angle is greater than or equal to 80°.
[0022] As a possible implementation manner, the extension portion further has a fifth region, and the fifth region is bent relative to the third region;
[0023] Along the thickness direction of the battery cell, the fifth region and the second region have a spacing and at least partially overlap.
[0024] As a possible implementation manner, the packaging portion has a notch, the notch is located at an end of the packaging portion along the width direction of the connector, and the packaging portion is bent along an edge of the notch close to the main body to form the second region.
[0025] As a possible implementation, the package has a receiving cavity, and the body is located in the receiving cavity;
[0026] Along the direction from the body to the packaging part, the accommodating cavity of the packaging component has a first wall surface close to the body and a second wall surface away from the body;
[0027] When the second area is not bent relative to the first area, the distance between the edge of the packaging portion away from the body and the first wall surface is greater than the distance between the edge of the packaging portion away from the body and the second wall surface.
[0028] As a possible implementation manner, there is a distance between an end of the third region facing away from the main body and an edge of the first region facing away from the main body, and the distance is greater than or equal to 2 mm.
[0029] In a second aspect, the present application provides an electronic device, comprising the battery described in any of the aforementioned embodiments.
[0030] The electronic device provided in the present application, because it includes the battery in any of the aforementioned embodiments, can improve the energy density of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0032] Figure 1 A schematic diagram of the structure of a battery provided in an embodiment of the present application;
[0033] Figure 2 A cross-sectional view of a battery provided in an embodiment of the present application;
[0034] Figure 3 A schematic diagram of the side structure of a battery provided in Example 1 of the present application;
[0035] Figure 4 for Figure 3 A partial enlarged view of part A in FIG.
[0036] Figure 5 A schematic diagram of the side structure of a battery provided in Example 2 of the present application;
[0037] Figure 6 for Figure 5 A partial enlarged view of part B in FIG.
[0038] Figure 7 A schematic diagram of the side structure of a battery provided in Example 3 of the present application;
[0039] Figure 8 for Figure 7 A partial enlarged view of part C in FIG.
[0040] Fig. 9 A schematic diagram of the side structure of a battery provided in Example 4 of the present application;
[0041] Fig.10 for Fig. 9 A partial enlarged view of part D in FIG.
[0042] Fig.11 A schematic diagram of the side structure of a battery provided in Example 5 of the present application;
[0043] Fig.12 for Fig.11 A partial enlarged view of part E in FIG.
[0044] Description of reference numerals:
[0045] 100-battery;
[0046] 110-battery cell;
[0047] 111-body; 1111-ear connecting part;
[0048] 112-connecting piece; 1121-third area; 1122-fourth area; 1123-fifth area;
[0049] 120-Packaging;
[0050] 121-packaging part; 1211-first area; 1212-second area; 1213-notch;
[0051] 122 - accommodating cavity; 1221 - first wall surface; 1222 - second wall surface;
[0052] 200-PCB board. DETAILED DESCRIPTION
[0053] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0054] With the development of lithium-ion battery technology, users are increasingly pursuing products with fast charging and long battery life, which will inevitably drive the development of lithium-ion batteries in the direction of fast charging while taking into account high energy density. Most manufacturers improve the energy density of batteries by changing the battery structure.
[0055] In the prior art, during the packaging process of the battery, the packaging member wraps around the battery cell, and the edge area of the packaging member after heat pressing forms a packaging portion.
[0056] However, due to the existence of the packaging part, the battery structure occupies a large space and the energy density of the battery is difficult to improve.
[0057] In order to overcome the defects in the prior art, the present application provides a battery and an electronic device, wherein the battery has a battery cell and a packaging component, wherein the battery cell includes a body and a connector, wherein one end of the connector is electrically connected to the pole ear connection portion of the body, the pole ear connection portion and the connector at least partially overlap to form a connection area, and the other end of the connector extends toward the side away from the body; the packaging component is used to package the battery cell, the packaging component forms a packaging portion on the top of the battery cell, and the connector has an extension portion protruding from the edge of the packaging portion; the packaging portion has a first area and a second area, the second area is bent relative to the first area, the second area overlaps the first area, the connection area is located in the first area, and the extension portion partially overlaps the first area. Through such a structural arrangement, the space occupied by the battery is reduced, and the energy density of the battery and the electronic device is improved.
[0058] The content of the utility model will be described in detail below with reference to the accompanying drawings so that those skilled in the art can understand the content of the utility model more clearly and in detail.
[0059] Embodiment 1
[0060] Figure 1 A schematic diagram of the structure of a battery provided in an embodiment of the present application. Figure 2 A cross-sectional view of a battery provided in an embodiment of the present application. Figure 3 This is a schematic diagram of the side structure of the battery provided in Example 1 of the present application. Figure 4 for Figure 3 A partial enlarged view of part A in FIG. Figure 1-Figure 4 As shown, this embodiment provides a battery 100 including a battery cell 110 and a packaging component 120 .
[0061] Among them, the battery cell 110 includes a main body 111 and a connector 112, the main body 111 has a pole lug connection portion 1111, one end of the connector 112 is electrically connected to the pole lug connection portion 1111, the pole lug connection portion 1111 and the connector 112 at least partially overlap to form a connection area, and the other end of the connector 112 extends toward a side away from the main body 111.
[0062] The packaging member 120 is used to package the battery cell 110 . Part of the packaging member 120 forms a packaging portion 121 at the top of the battery cell 110 on one side close to the connector 112 . The connector 112 has an extension portion protruding from the edge of the packaging portion 121 .
[0063] The packaging portion 121 has a first area 1211 and a second area 1212 . The second area 1212 is bent relative to the first area 1211 . The second area 1212 overlaps the first area 1211 . The connection area is located in the first area 1211 . Along the thickness direction of the battery cell 110 , the extension portion partially overlaps the first area 1211 .
[0064] In this embodiment, the second area 1212 of the packaging part 121 is bent relative to the first area 1211, which reduces the space occupied by the packaging part 121, and accordingly, the energy density of the battery 100 can be improved. In addition, along the thickness direction of the battery cell 110, the extension of the connector 112 and the first area 1211 partially overlap, and the extension of the connector 112 outside the packaging part 121 can be concentrated in the projection of the first area 1211 of the packaging part 121, so that the structure of the battery 100 is more compact, and the space occupied by the battery 100 is further reduced, thereby improving the energy density of the battery 100.
[0065] Exemplary, combined Figure 1-Figure 4 As shown, the battery cell 110 in this embodiment includes a body 111 and a connector 112. It can be understood that the body 111 of the battery cell 110 is a pole piece and a pole ear, the pole ear and the pole piece are electrically connected, and the pole piece is wound or folded to form the battery cell 110. The side of the pole ear on the body 111 away from the pole piece forms a pole ear connection portion 1111, and the connector 112 is electrically connected to the pole ear connection portion 1111. In the actual connection process, the connector 112 and the pole ear connection portion 1111 are welded. The connector 112 and the pole ear connection portion 1111 form a connection area, and the side of the connector 112 away from the pole ear connection portion 1111 extends toward the side away from the body 111.
[0066] The packaging member 120 wraps the battery cell 110. Specifically, the packaging member 120 wraps the body 111 of the battery cell 110 and packages the battery cell 110. After packaging, part of the packaging member 120 forms a packaging portion 121 on the top of the body 111. The connection area is packaged by the packaging portion 121, which can protect the body 111 of the battery cell 110 and prevent the electrolyte from leaking. Among them, the part of the connector 112 protruding from the edge of the packaging portion 121 is the extension portion.
[0067] The packaging portion 121 along the X direction causes the overall structure of the battery 100 to be enlarged. In this embodiment, the packaging portion 121 has a first region 1211 and a second region 1212, and the second region 1212 is bent relative to the first region 1211 along the thickness direction (Z direction) of the battery cell 110. Figure 3and Figure 4 As shown, along the Z direction, the second region 1212 overlaps with the first region 1211 , thus reducing the length of the packaging portion 121 along the X direction, thereby reducing the space occupied by the battery 100 and improving the energy density of the battery 100 .
[0068] During the bending process of the packaging portion 121, the connector 112 is also bent. Along the Z direction, the extension portion and the first area 1211 of the packaging portion 121 at least partially overlap. It can be understood that along the projection of the thickness direction of the battery cell 110, the connector 112 falls into the projection of the first area 1211 of the packaging portion 121, further reducing the space occupied by the battery 100 to improve the energy density of the battery 100.
[0069] After the packaging part 121 is bent, the connection area formed by the connector 112 and the tab connector 1111 is located in the first area 1211 of the packaging part 121, and the extension of the connector 112 exposed outside the packaging part 121 is connected to other components, such as a printed circuit board (PCB). In this way, other components are also located within the projection of the packaging part 121 along the thickness direction of the battery cell 110, and the connection structure of the battery 100 is compact, occupies a small space, and improves the space utilization rate, which is beneficial to the improvement of the energy density of the battery 100. In addition, since the tab connector 1111 on the body 111 is very thin, it is easy to break during the bending process, resulting in a decrease in the yield rate of the battery 100. In this embodiment, the connection is made through the connector 112 and the tab connection portion 1111. The connection area formed by the connector 112 and the tab connection portion 1111 is located in the first area 1211 of the packaging portion 121. In this way, the tab connection portion 1111 does not need to be bent. On the basis of improving the energy density of the battery 100, the yield rate of the battery 100 can also be improved.
[0070] When the length of the extension protruding from the edge of the packaging portion 121 is large, the extension of the connector 112 can be bent to reduce the space occupied by the battery 100 and improve the energy density of the battery 100. As a possible implementation, the extension has a third region 1121, and the third region 1121 is bent relative to the second region 1212 of the packaging portion 121; along the thickness direction of the battery cell 110, the third region 1121 and the first region 1211 at least partially overlap.
[0071] It can be understood that the extension portion of the connector 112 is exposed outside the package 120, and the exposed portion is the third region 1121, and the third region 1121 is bent relative to the second region 1212 of the package 121. In this way, along the thickness direction (Z direction) of the battery cell 110, part of the third region 1121 falls into the first region 1211 of the package 121. The third region 1121 can be relatively parallel to the second region 1212 of the package 121 along the X direction, or it can be spaced and inclined along the X direction with the second region 1212 of the package 121. In this way, the extension portion of the connector 112 is located in the projection of the package 121 along the Z direction by bending, which reduces the structure of the battery 100, improves the space utilization rate of the package 121 of the package 120 and the energy density of the battery 100.
[0072] In some embodiments, Figure 3-Figure 4 As shown, along the thickness direction of the battery cell 110, the third region 1121 and the second region 1212 partially overlap. It can be understood that after the third region 1121 of the connector 112 is bent relative to the second region 1212 of the packaging portion 121, the extension direction of the third region 1121 and the second region can be inclined or parallel. At this time, along the thickness direction (Z direction) of the battery cell 110, the first region 1211 of the packaging portion 121, the second region 1212 of the packaging portion 121, and the third region 1121 of the connector 112 are distributed in sequence.
[0073] Further, the third region 1121 and the second region 1212 are parallel. It can be understood that the third region 1121 extends along the X direction, and the angle between it and the thickness direction (Z direction) of the battery cell 110 is 90°. That is, the third region 1121 of the connector 112 and the first region 1211 and the second region 1212 of the packaging portion 121 are parallel to each other. In this way, the side of the third region 1121 of the connector 112 away from the packaging portion 121 and the side wall of the packaging portion 120 relative to the connector 112 have a spacing along the thickness direction of the battery cell 110, and the third region 1121 of the connector 112 and the top of the packaging portion 120 together enclose an accommodation space, and the PCB board 200 can be set in the accommodation space. In this way, the bending of the connector 112 can make the structure of the battery 100 compact, reduce the space occupancy, and further improve the energy density of the battery 100.
[0074] In this embodiment, the packaging portion 121 has a notch 1213, which is located at the end of the packaging portion 121 along the width direction (Y direction) of the connecting piece 112. The packaging portion 121 is bent along the edge of the notch 1213 close to the main body 111 to form a second area 1212.
[0075] The notch 1213 in this embodiment may be a square area, and the notch 1213 may be located at one of the ends of the packaging part 121 along the width direction (Y direction) of the connector 112; or, the notch 1213 may be provided at both ends of the packaging part 121 along the width direction (Y direction) of the connector 112. The edge of the notch 1213 close to the body 111 along the X direction is used as a reference for bending. After the packaging part 121 is bent along the edge of the notch 1213, the second area 1212 and the first area 1211 are opposite to each other along the Z direction, and along the Z direction, the second area 1212 of the packaging part 121 falls within the projection of the first area 1211. On the one hand, the length of the packaging part 121 along the X direction can be shortened, and on the other hand, the thickness of the edge of the packaging part 121 after bending can be reduced, further improving the energy density of the battery 100.
[0076] It should be noted that the gap 1213 in this embodiment can also be a triangular area, and is not limited to the square area and triangular area mentioned in this section.
[0077] Specifically, the package 120 has a receiving cavity 122 , and the body 111 is located in the receiving cavity 122 .
[0078] Along the direction from the body 111 to the packaging part 121, the accommodating cavity 122 of the packaging part 120 has a first wall surface 1221 close to the body 111 and a second wall surface 1222 away from the body 111; when the second area 1212 is not bent relative to the first area 1211, the distance (W1) between the edge of the packaging part 121 away from the body 111 and the first wall surface 1221 is greater than the distance (W2) between the edge of the packaging part 121 away from the body 111 and the second wall surface 1222. In a specific implementation, W1 / W2≥1 and W1 / W2≤3.
[0079] It is understandable that Figure 2 As shown, in the accommodating cavity 122, along the X direction, the first wall 1221 is close to the body 111, and the second wall 1222 is away from the body 111 and close to the packaging portion 121. The first wall 1221 and the second wall 1222 form a step area on the side of the accommodating cavity 122 close to the packaging portion 121. During the charging or discharging process of the battery 100, heat is generated and expansion occurs, which is essentially the expansion of the body 111. As the packaging 120 is deformed, the packaging 120 in the step area changes accordingly, which can buffer the thermal expansion deformation of the body 111, reduce the possibility of bulging of the battery 100, and enhance the safety performance of the battery 100.
[0080] In addition, along the X direction, there is no other connection structure between the edge of the packaging part 121 away from the body 111 and the first wall 1221, so W1 can be appropriately increased to improve the sealing of the packaging part 120. Of course, the edge of the packaging part 121 away from the body 111 and the second wall 1222 are provided with a connector 112. On the basis of meeting the sealing requirements of the packaging part 120, W2 should be as small as possible to reasonably reduce the size of the battery 100, reduce the space occupied by the battery 100, and improve the energy density of the battery 100.
[0081] In order to prevent the connector 112 from returning to its original shape after bending and deformation, an adhesive may be applied between the third region 1121 of the connector 112 and the second region of the packaging portion 121, so that the extension portion of the connector 112 and the packaging portion 121 are relatively fixed. Furthermore, an adhesive may be applied between the second region 1212 and the first region 1211 of the packaging portion 121, so that the second region 1212 and the first region 1211 of the packaging portion 121 are relatively fixed.
[0082] Through the above-mentioned structural setting, this embodiment can reasonably bend the packaging part 121 and the connecting member 112, thereby reducing the size of the battery 100, reducing the space occupied by the battery 100, and improving the energy density of the battery 100.
[0083] Embodiment 2
[0084] The structure of the battery 100 provided in this embodiment is substantially the same as that of the battery 100 in the above-mentioned embodiment 1, except that the structure of the connecting member 112 after bending is described in detail below in conjunction with the accompanying drawings. It should be noted that the same structure as that of the embodiment 1 has been described in detail in the embodiment 1, and will not be described in detail here.
[0085] In some embodiments, one end of the third region 1121 away from the packaging portion 121 extends toward the side away from the body 111 , and the end of the third region 1121 away from the body 111 protrudes from the edge of the first region 1211 away from the body 111 .
[0086] Figure 5 This is a schematic diagram of the side structure of the battery provided in Example 2 of the present application. Figure 6 for Figure 5 A partial enlarged view of part B in FIG.
[0087] Combination Figure 1 , Figure 2 , Figure 5 , Figure 6As shown, the extension portion of the connector 112 is bent relative to the second area 1212 of the packaging part 121 along the Z direction. Along the Z direction, the first area 1211 of the packaging part 121, the second area 1212 of the packaging part 121 and the third area 1121 of the connector 112 are stacked in sequence. One end of the third area 1121 of the connector 112 away from the second area 1212 of the packaging part 121 extends along the X direction. Along the X direction, the edge of the third area 1121 of the connector 112 can fall into the projection of the second area 1212 of the packaging part 121, or it can protrude from the edge of the second area 1212 of the packaging part 121 away from the body 111 along the X direction. In this way, an accommodation space is formed between the third area 1121 of the connector 112 and the side of the packaging part 120 away from the packaging part 121 along the Z direction, which can be used to set components such as the PCB board 200 to improve the utilization rate of the connector 112.
[0088] Furthermore, there is a gap between the end of the third region 1121 away from the body 111 and the edge of the first region 1211 away from the body 111, and the gap (marked L in the figure) is greater than or equal to 2 mm. Such a connector 112 can provide a certain assembly margin, facilitate the connection between other components of the battery 100 and the connector 112, and improve the assembly efficiency of the battery 100.
[0089] In the battery 100 provided in this embodiment, the third region 1121 of the connector 112 is arranged in parallel with the packaging portion 121 , and the edge of the third region 1121 of the connector 112 extends to the outside of the packaging portion 121 along the X direction, which can improve the utilization rate of the connector 112 .
[0090] Embodiment 3
[0091] The structure of the battery 100 provided in this embodiment is similar to that of the battery 100 provided in the above-mentioned embodiment 2, except that the third region 1121 of the connector 112 is located relative to the body 111 of the battery 100. This embodiment is described in detail below in conjunction with the accompanying drawings. It should be noted that the same parts of this embodiment as those of the above-mentioned embodiments 1 and 2 have been described in detail, and will not be repeated here.
[0092] Figure 7 This is a schematic diagram of the side structure of the battery provided in Example 3 of the present application. Figure 8 for Figure 7 A partial enlarged view of part C in FIG.
[0093] In some embodiments, in combination Figure 1 , Figure 2 , Figure 7 and Figure 8As shown, the plane where the third region 1121 is located is adjacent to the top surface of the battery cell 110, and the third region 1121 and the second region 1212 have a first angle (α); the first angle (α) is greater than or less than 80°. In this way, the side of the packaging part 121 away from the body 111 along the X direction and the third region 1121 of the connector 112 together enclose a receiving space, and other components can be installed in the receiving space to improve the space utilization of the battery 100. At the same time, the third region 1121 of the connector 112 is close to the side of the body 111, which can reduce the size of the battery 100 along the X direction and improve the energy density of the battery 100.
[0094] It can be understood that the first angle (α) is greater than or equal to 80°, and the closer the third area 1121 of the connector 112 is to the main body 111 along the X direction, the larger the accommodation space enclosed by the packaging portion 121 and the connector 112, and the more components can be accommodated, thereby improving space utilization, making the overall structure of the battery 100 compact, and further improving the energy density of the battery 100.
[0095] In the battery 100 provided in this embodiment, the third region 1121 of the connector 112 and the top surface of the battery cell 110 are adjacent to each other along the X direction, which can improve the space utilization of the structure of the battery 100 and the energy density of the battery 100 .
[0096] Embodiment 4
[0097] The structure of the battery 100 provided in this embodiment is similar to that of the above three embodiments, except that the connector 112 further includes a fourth region 1122. This embodiment is described in detail below in conjunction with the accompanying drawings. It should be noted that the same parts of this embodiment as those of the above embodiments have been described in detail in the above embodiments, and will not be repeated in this section.
[0098] Illustratively, the extension portion of the connector 112 of the battery 100 provided in this embodiment also has a fourth region 1122, the fourth region 1122 is bent relative to the third region 1121, and the fourth region 1122 and the third region 1121 have a second angle (β); the fourth region 1122 and the top of the battery cell 110 are opposite to each other along the extension direction of the third region 1121 and have a spacing; the second angle (β) is greater than or equal to 80°.
[0099] Fig. 9 This is a schematic diagram of the side structure of the battery provided in Example 4 of the present application. Fig.10 for Fig. 9 A partial enlarged view of part D in FIG.
[0100] Combination Figure 1 , Figure 2 , Fig. 9 and Fig.10As shown, the third region 1121 and the second region 1212 of the packaging portion 121 are opposite to each other along the Z direction, and the fourth region 1122 is bent along the Z direction relative to the third region 1121. There is a gap between the fourth region 1122 and the top of the battery cell 110 along the X direction. It can be understood that along the Z direction, the fourth region 1122 of the connector 112 falls within the projection of the packaging portion 121.
[0101] When the length of the connecting member 112 is relatively long and the length of the packaging portion 121 along the X direction after being bent is small, the connecting member 112 can be bent multiple times so that the connecting member 112 can be accommodated between the packaging portion 121 and the edge of the packaging member 120 on the side away from the packaging portion 121 along the Z direction. The bending operation of the connecting member 112 is easy to operate and will not cause the structural size of the battery 100 to increase, which is convenient for improving the yield rate of the battery 100 and the energy density of the battery 100.
[0102] It should be noted that, in this embodiment, there is a second angle (β) between the fourth region 1122 and the third region 1121 of the connector 112, that is, the bending angle of the third region 1121 of the connector 112 can control the relative position relationship between the fourth region 1122 and the top of the battery cell 110 along the X direction. This embodiment does not specifically limit the size of the second angle (β), and in the specific implementation process, the appropriate size of the second angle (β) can be selected according to actual needs.
[0103] Exemplarily, the second angle (β) is greater than or equal to 80°. The fourth region 1122 of the connector 112 and the top of the battery cell 110 may be opposite to each other along the X direction, and the third region 1121 of the connector 112, the fourth region 1122 of the connector 112, and the side of the package 120 facing the fourth region 1122 of the connector 112 together form a receiving space, so that other components, such as the PCB board 200, etc., can be installed in the receiving space, which can improve the space utilization of the battery 100 and the energy density of the battery 100.
[0104] Embodiment 5
[0105] The battery 100 provided in this embodiment is similar in structure to the battery 100 in the fourth embodiment, except for the position and bending direction of the third region 1121 of the connector 112. This embodiment is described in detail below in conjunction with the accompanying drawings. It should be noted that the same parts of this embodiment and the aforementioned embodiment have been described in detail in the aforementioned implementation manner, and will not be repeated in this section.
[0106] In this embodiment, the extension portion further has a fifth region 1123 , which is bent relative to the third region 1121 ; along the thickness direction of the battery cell 110 , the fifth region 1123 and the second region 1212 are spaced apart and at least partially overlapped.
[0107] Fig.11 This is a schematic diagram of the side structure of the battery provided in Example 5 of the present application. Fig.12 for Fig.11 A partial enlarged view of part E in FIG.
[0108] Combination Figure 1 , Figure 2 , Fig.11 and Fig.12 As shown, the third region 1121 of the connector 112 is adjacent to the top of the battery cell 110 along the X direction, and the end of the third region 1121 of the connector 112 that is away from the packaging portion 121 is bent relative to the packaging portion 121 along the X direction. The fifth region 1123 of the connector 112 and the second region 1212 of the packaging portion 121 are opposite to each other along the Z direction and have a spacing. And along the Z direction, the fifth region 1123 of the connector 112 at least partially falls within the projection of the second region 1212 of the packaging portion 121. In this way, the fifth region 1123 of the connector 112 after being bent along the X direction away from the battery cell 110 will not increase the structural dimensions of the battery 100 along the X direction, which is convenient for improving the energy density of the battery 100. At the same time, the fifth area 1123 of the connector 112, the third area 1121 of the connector 112 and the second area 1212 of the packaging portion 121 together form a receiving space, in which other components of the battery 100 can be installed, thereby improving the structure and space utilization of the battery 100.
[0109] In addition, in this embodiment, the first angle (α) between the third region 1121 of the connector 112 and the second region 1212 of the packaging portion 121 is greater than 80°. The third region 1121 of the connector 112 can be as close to one side of the battery cell 110 as possible. In this way, the accommodation space enclosed by the fifth region 1123 of the connector 112, the third region 1121 of the connector 112, and the second region 1212 of the packaging portion 121 is relatively increased, and more components can be accommodated, thereby improving the integration of the battery 100 and the space utilization of the battery 100.
[0110] Embodiment 6
[0111] This embodiment may also provide an electronic device, comprising the battery 100 in any of the above embodiments.
[0112] The electronic device provided in this embodiment, because it includes the battery 100 in any of the aforementioned embodiments, can improve the energy density of the electronic device and the integration of the electronic device.
[0113] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.
[0114] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.
[0115] It should be easily understood that “on,” “above,” and “over” in this application should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above something” or “over,” but also may include the meaning of “above something” or “over” with no intervening features or layers therebetween (i.e., directly on something).
[0116] In addition, spatially relative terms, such as "below," "below," "below," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90° or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.
[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A battery, characterized in that: include: A battery cell, comprising a body and a connector, wherein the body has a tab connector, one end of the connector is electrically connected to the tab connector, the tab connector and the connector at least partially overlap to form a connection area, and the other end of the connector extends toward a side away from the body; A packaging member, used to package the battery cell, wherein a portion of the packaging member forms a packaging portion on the top of the battery cell on a side close to the connector; the connector has an extension portion protruding from an edge of the packaging portion; The packaging portion has a first area and a second area, the second area is bent relative to the first area, the second area overlaps with a portion of the first area, the connection area is located in the first area, and along the thickness direction of the battery cell, the extension portion overlaps with a portion of the first area.
2. The battery according to claim 1, characterized in that The extension portion has a third region, and the third region is bent relative to the second region; Along the thickness direction of the battery core, the third region and the first region at least partially overlap.
3. The battery according to claim 2, characterized in that Along the thickness direction of the battery cell, the third region and the second region partially overlap.
4. The battery according to claim 2, characterized in that The plane where the third region is located is adjacent to the top surface of the battery core, and the third region and the second region have a first angle; The first angle is greater than or equal to 80°.
5. The battery according to claim 3, characterized in that The third region is parallel to the second region.
6. The battery according to claim 3, characterized in that The third region extends toward a side away from the main body, and an end of the third region on the side away from the main body protrudes from an edge of the first region on the side away from the main body.
7. The battery according to claim 5, characterized in that The extension portion further has a fourth region, the fourth region is bent relative to the third region, and the fourth region and the third region have a second angle; The fourth region and the top of the battery cell are opposite to each other and have a distance therebetween along the extending direction of the third region; The second angle is greater than or equal to 80°.
8. The battery according to claim 4, characterized in that The extension portion further has a fifth region, and the fifth region is bent relative to the third region; Along the thickness direction of the battery cell, the fifth region and the second region have a spacing and at least partially overlap.
9. The battery according to any one of claims 1 to 8, characterized in that: The packaging portion has a notch, and the notch is located at an end of the packaging portion along the width direction of the connector. The packaging portion is bent along an edge of the notch close to the main body to form the second area.
10. The battery according to claim 9, characterized in that The packaging component has a receiving cavity, and the body is located in the receiving cavity; Along the direction from the body to the packaging part, the accommodating cavity of the packaging component has a first wall surface close to the body and a second wall surface away from the body; When the second area is not bent relative to the first area, the distance between the edge of the packaging portion away from the body and the first wall surface is greater than the distance between the edge of the packaging portion away from the body and the second wall surface.
11. The battery according to claim 6, characterized in that There is a distance between the end of the third region facing away from the main body and the edge of the first region facing away from the main body, and the distance is greater than or equal to 2 mm.
12. An electronic device, characterized in that: A battery comprising any one of claims 1 to 11.