阅读说明：本技术 电芯结构、电池、电子设备及电芯结构制备方法 (Battery cell structure, battery, electronic equipment and preparation method of battery cell structure ) 是由 童焰 陈志勇 于 2020-12-15 设计创作，主要内容包括：本公开涉及一种电芯结构、电池、电子设备及电芯结构制备方法。所述电芯结构包括：电芯本体,所述电芯本体包括外侧壁和与所述外侧壁相邻设置且连接的表面,所述外侧壁形成至少一个平面侧壁,所述平面侧壁所在平面与所述表面垂直；所述电芯本体上形成有第一极耳和第二极耳,所述第一极耳设置在所述平面侧壁上以与外壳连接,所述第二极耳设置在所述电芯本体上以与外壳连接。(The disclosure relates to a battery cell structure, a battery, an electronic device and a battery cell structure preparation method. The cell structure includes: the battery cell comprises a battery cell body and a battery cell body, wherein the battery cell body comprises an outer side wall and a surface which is arranged adjacent to and connected with the outer side wall, the outer side wall forms at least one plane side wall, and the plane of the plane side wall is vertical to the surface; the battery cell comprises a battery cell body and is characterized in that a first lug and a second lug are formed on the battery cell body, the first lug is arranged on a plane side wall to be connected with a shell, and the second lug is arranged on the battery cell body to be connected with the shell.)

1. A cell structure, comprising:

a cell body (1), the cell body (1) comprising an outer sidewall (10) and a surface disposed adjacent to and connected to the outer sidewall (10),

the outer side wall (10) forms at least one plane side wall (101), and the plane of the plane side wall (101) is vertical to the surface;

the battery cell comprises a battery cell body (1), and is characterized in that a first lug (13) and a second lug (14) are formed on the battery cell body (1), the first lug (13) is arranged on a plane side wall (101) to be connected with a shell, and the second lug (14) is arranged on the battery cell body (1) to be connected with the shell.

2. The cell structure of claim 1, wherein the first tab (13) and the second tab (14) are both disposed on the planar side wall (101), the first tab (13) and the second tab (14) extending in a first direction for connection with the housing, respectively;

or the first pole lug (13) and the second pole lug (14) are both arranged on the plane side wall (101), the first pole lug (13) extends along a first direction to be connected with the shell, the second pole lug (14) bends towards a second direction to extend to be connected with the shell,

the first direction is parallel to the plane where the plane side wall (101) is located, and the first direction is perpendicular to the second direction.

3. The cell structure of claim 1 or 2, characterized in that the outer side wall (10) forms one of the planar side walls (101) and one of the arc-shaped faces (102) connected to the planar side wall (101).

4. The cell structure of claim 1 or 2, wherein the outer side wall (10) forms two of the planar side walls (101), the two planar side walls (101) comprising a first planar side wall (101a) and a second planar side wall (101 b);

wherein the first planar side wall (101a) and the second planar side wall (101b) are adjacent and connected, the outer side wall (10) comprises an arc-shaped face (102), one end of the arc-shaped face (102) is connected with the first planar side wall (101a), and the other end is connected with the second planar side wall (101 b);

or the first plane side wall (101a) and the second plane side wall (101b) are arranged oppositely, the outer side wall (10) comprises two arc-shaped surfaces (102), one ends of the two arc-shaped surfaces (102) are respectively connected with the first plane side wall (101a), and the other ends of the two arc-shaped surfaces (102) are respectively connected with the second plane side wall (101 b).

5. A method of making the cell structure of any of claims 1-4, comprising: and flattening the manufactured battery cell body at preset pressure and within preset time so that the outer side wall (10) of the battery cell body forms at least one plane side wall (101).

6. A battery, characterized by comprising the cell structure of any one of claims 1 to 4, a housing (3) and a cover plate (2), wherein the housing (3) and the cover plate (2) enclose a containing space;

the shell (3) forms at least one plane side part (31), the plane of the plane side part (31) is vertical to the plane of the cover plate (2), and the plane side part (31) is used for being connected with electronic equipment;

the battery cell structure is arranged in the accommodating space, a plane side wall (101) of the battery cell structure is matched with a plane side portion (31) of the shell (3), the first pole lug (13) is connected with the plane side portion (31), and the second pole lug (14) is connected with the shell (3) or the cover plate (2).

7. The battery according to claim 6, wherein the planar side portion (31) is provided with a first through hole (311), the first tab (13) corresponds to the first through hole (311), and the first through hole (311) exposes the first tab (13);

the planar side portion (31) includes a conductive portion (312), the conductive portion (312) is disposed at the first through hole (311) and covers the first through hole (311), and the first tab (13) is connected to the conductive portion (312).

8. The battery according to claim 7, wherein an insulating sealing portion (313) is provided on the planar side portion (31), a second through hole (3131) corresponding to the first through hole (311) is opened on the insulating sealing portion (313), the insulating sealing portion (313) is located between the planar side portion (31) and a conductive portion (312), and the conductive portion (312) is provided at the first through hole (311) through the insulating sealing portion (313).

9. The battery according to claim 7, wherein the conductive part (312) comprises a conductive plate (3121) and a conductive sheet (3122) disposed on the conductive plate (3121), wherein an extension part (31221) is disposed on the conductive sheet (3122), and a plane of the extension part (31221) forms an included angle with a plane of the planar side part (21).

10. The battery according to claim 7, wherein the conductive portion (312) is provided with a protruding portion (3123) on a side near the first through hole (311), and the protruding portion (3123) protrudes into the receiving space through the first through hole (311) to be connected with the first tab (13).

11. An electronic device comprising a device body and the battery according to any one of claims 6 to 10, the battery being connected to the device body.

Technical Field

The present disclosure relates to the field of battery technologies, and more particularly, to an electrical core structure, a battery, an electronic device, and a method for manufacturing an electrical core structure.

Background

Button cells are widely used as power reserves of electronic products, most of existing button cells are cylindrical, and with the rapid development of science and technology, various electronic products and wearable devices are diversified, so that new requirements and opportunities are provided for traditional lithium battery products, and the current battery structure which is only cylindrical cannot meet the requirements of the current electronic products.

Disclosure of Invention

An object of the present disclosure is to provide a cell structure, a battery, an electronic device, and a cell structure manufacturing method.

According to a first aspect of the present disclosure, a cell structure is provided. The cell structure includes:

a cell body comprising an outer sidewall and a surface disposed adjacent to and connected to the outer sidewall,

the outer side wall forms at least one plane side wall, and the plane of the plane side wall is perpendicular to the surface;

the battery cell comprises a battery cell body and is characterized in that a first lug and a second lug are formed on the battery cell body, the first lug is arranged on a plane side wall to be connected with a shell, and the second lug is arranged on the battery cell body to be connected with the shell.

Optionally, the first tab and the second tab are both disposed on the planar side wall, and the first tab and the second tab extend along a first direction to be connected to the housing respectively;

or the first pole lug and the second pole lug are both arranged on the plane side wall, the first pole lug extends along a first direction to be connected with the shell, the second pole lug bends towards a second direction to extend to be connected with the shell,

the first direction is parallel to the plane of the plane side wall, and the first direction is perpendicular to the second direction.

Optionally, the outer sidewall forms one of the planar sidewalls and an arcuate face connected to the planar sidewall.

Optionally, the outer sidewall forms two of the planar sidewalls, including a first planar sidewall and a second planar sidewall;

wherein the first planar sidewall and the second planar sidewall are adjacent and connected, the outer sidewall comprises an arcuate surface, one end of the arcuate surface is connected to the first planar sidewall, and the other end is connected to the second planar sidewall;

or the first plane side wall and the second plane side wall are arranged oppositely, the outer side wall comprises two arc-shaped surfaces, one ends of the two arc-shaped surfaces are respectively connected with the first plane side wall, and the other ends of the two arc-shaped surfaces are respectively connected with the second plane side wall.

According to a second aspect of the present disclosure, a method for preparing the cell structure is provided, which includes subjecting the prepared cell body to a flattening process at a preset pressure and a preset time, so that at least one planar sidewall is formed on an outer sidewall of the cell body.

According to a third aspect of the present disclosure, a battery is provided, which includes the cell structure of the first aspect, a housing and a cover plate, wherein the housing and the cover plate enclose a receiving space;

the shell forms at least one plane side part, the plane of the plane side part is vertical to the plane of the cover plate, and the plane side part is used for being connected with electronic equipment;

the battery cell structure is arranged in the accommodating space, the plane side wall of the battery cell structure is matched with the plane side part of the shell, the first pole lug is connected with the plane side part, and the second pole lug is connected with the shell or the cover plate.

Optionally, a first through hole is formed in the side portion of the plane, the first tab corresponds to the first through hole, and the first tab is exposed by the first through hole;

the plane side part comprises a conductive part, the conductive part is arranged at the first through hole and covers the first through hole, and the first lug is connected with the conductive part.

Optionally, an insulating sealing portion is disposed on the planar side portion, a second through hole corresponding to the first through hole is formed in the insulating sealing portion, the insulating sealing portion is located between the planar side portion and the conductive portion, and the conductive portion is disposed at the first through hole through the insulating sealing portion.

Optionally, the conductive portion includes a conductive plate and a conductive plate disposed on the conductive plate, an extension portion is disposed on the conductive plate, and an included angle is formed between a plane where the extension portion is located and a plane where the side portion of the plane is located.

Optionally, a protruding portion is disposed on one side, close to the first through hole, of the conductive portion, and the protruding portion extends into the accommodating space through the first through hole and is connected with the first tab.

According to a fourth aspect of the present disclosure, there is provided an electronic apparatus including an apparatus main body and the battery of the third aspect, the battery being connected to the apparatus main body.

The technical effect of this disclosure lies in, provides an electricity core structure, and the lateral wall of electricity core structure forms at least one plane lateral wall, electricity core body is formed with first utmost point ear and second utmost point ear, and first utmost point ear sets up connect with the shell on the plane lateral wall, and the battery is used to the electricity core structure that this disclosure provided, and the battery forms the plane lateral part with plane lateral wall looks adaptation, and this disclosed electricity core structure can satisfy the multiple demand of user, and can use different occasions, has enlarged the application scope of electricity core structure.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a first schematic diagram of a cell structure according to the present disclosure.

Fig. 2 is a schematic diagram ii of a cell structure according to the present disclosure.

Fig. 3 is a schematic diagram iii of a cell structure according to the present disclosure.

Fig. 4 is a schematic structural diagram of another view angle of the cell structure of fig. 3.

Fig. 5 is a schematic diagram of a cell structure according to the present disclosure.

Fig. 6-8 are schematic structural diagrams of a battery of the present disclosure.

Fig. 9-10 are schematic structural diagrams of a battery of the present disclosure.

Fig. 11-12 are schematic structural diagrams of a battery of the present disclosure.

Fig. 13 is a schematic structural view of the conductive plate.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

According to a first aspect of the present disclosure, a cell structure is provided. Referring to fig. 1 to 5, the cell structure includes:

the battery cell comprises a battery cell body 1, wherein the battery cell body 1 comprises an outer side wall 10 and a surface which is arranged adjacent to and connected with the outer side wall 10; for example, the surfaces include a first surface 11 and a second surface 12, the first surface 11 and the second surface 12 being oppositely disposed.

The outer side wall 10 forms at least one planar side wall 101, the plane of the planar side wall 101 is perpendicular to the surface; for example, the planar sidewalls 101 formed on the outer sidewalls 10 are perpendicular to the first and second surfaces 11 and 12, respectively.

The battery cell comprises a battery cell body 1 and is characterized in that a first tab 13 and a second tab 14 are formed on the battery cell body 1, the first tab 13 is arranged on a plane side wall 101 to be connected with a shell, and the second tab 14 is arranged on the battery cell body 1 to be connected with the shell.

The cell structure of the present disclosure is formed in a winding manner or a lamination manner, so that a first tab 13 and a second tab 14 are formed on the cell body 1; the battery cell structure is applied to a battery, and the first tab 13 and the second tab 14 are respectively connected with a shell of the battery through laser welding or resistance welding so as to lead the first tab 13 and the second tab 14 out through the shell;

the arrangement of the first tab 13 on the planar side wall in the embodiment of the present application can be understood as follows: when the cell structure is formed in a winding manner or a lamination manner, the first tab 13 is directly formed on the planar side wall 101 according to the limitation of the winding manner, so that the first tab 13 is disposed on the planar side wall 101; or, depending on the limitation of the winding manner, the first tab 13 is not directly formed on the planar sidewall 101, but is formed on the other surface except the planar sidewall in the cell structure, and a portion of the first tab 13 may be disposed on the planar sidewall 101 by bending the first tab 13.

When the cell structure is applied to a battery, the battery comprises a shell, a plane side part is formed on the shell, wherein the plane side part formed on the shell is matched with the plane side wall of the cell structure, the first tab 13 is arranged on the plane side wall 101 and can be directly connected with the plane side part, and the plane side part is used for being connected with electronic equipment; the second tab 14 may be provided on the outer side wall 10 or on the first surface or on the second surface, wherein the second tab 14 is connected to the housing of the battery. Alternatively, the outer case of the battery may be a steel case.

The shape of the battery in the prior art is cylindrical, wherein the side wall of the cylindrical battery is a curved surface, and when the cylindrical battery is connected with electronic equipment, the contact area between the side wall of the battery and the electronic equipment is small, and the battery and the electronic equipment are not firmly fixed, so that the use safety of the battery is influenced.

At least one plane side wall 101 is formed on the outer side wall 10 of the battery cell body 1 of the embodiment, the battery cell body is applied to a battery, in order to enable the structure of the battery cell body to be matched with that of the battery, the internal space of the battery is reasonably utilized, a plane side part matched with the plane side wall is formed on a shell of the battery, mechanical connection is realized between the plane side part and electronic equipment, the connection area between the battery and the electronic equipment is increased, the connection firmness between the battery and the electronic equipment is improved, and the battery can be fixed on the electronic equipment in a magnetic attraction or bonding mode; on the other hand, the first tab is arranged on the plane side wall and connected with the shell of the battery, so that the battery is more conveniently electrically connected with the electronic equipment, the application range of the battery core structure is wider, and the requirements of different types of electronic equipment are met. For example, the electronic device may be a smartphone, a tablet, a smart wearable device, a headset, or the like.

On the other hand, the pole piece of the cylindrical winding core in the prior art is easy to break, the first tab is arranged on the plane side wall and then connected with the plane side part of the battery, the battery cell is in the charging and discharging process, the side wall of the plane structure has tensile strength, the extension of the tab of the battery cell in the charging and discharging process can be effectively inhibited, the tab breaking risk of the battery cell is reduced, and the energy density and the cycle performance of the battery cell are improved.

Optionally, the first tab 13 and the second tab 14 are disposed on the planar side wall 101, and the first tab 13 and the second tab 14 extend in a first direction to be connected to the housing respectively;

or the first tab 13 and the second tab 14 are formed on the planar side wall 101, the first tab 13 extends along a first direction to be connected with the housing, the second tab 14 bends along a second direction to extend to be connected with the housing,

the first direction is parallel to the plane where the planar side wall 101 is located, and the first direction is perpendicular to the second direction.

In a specific embodiment, the first tab 13 and the second tab 14 are both disposed on the planar side wall 101, the first tab 13 extends in a first direction so that the plane of the larger surface of the first tab 13 is parallel to the plane of the planar side wall 101, the cell body is applied to the battery, and the planar side portion formed by the battery case is matched with the planar side wall 101 so that the side of the first tab 13 away from the planar side wall 101 is connected with the planar side portion of the battery case by laser welding or resistance welding;

similarly, the second tab 14 extends in the first direction such that the plane of the larger surface of the second tab 14 is parallel to the plane of the planar sidewall 101 to facilitate connection to the planar side of the battery housing.

In alternative embodiments, the first tab 13 and the second tab 14 may be disposed on the same planar side wall, or both may be disposed on different planar side walls.

In a specific embodiment, the first tab 13 extends in a first direction, so that the plane of the larger surface of the first tab 13 is parallel to the plane of the planar side wall 101, the cell body is applied to the battery, and the planar side portion formed by the battery case is matched with the planar side wall 101, so that the side of the first tab 13 away from the planar side wall 101 is connected with the planar side portion of the battery case by laser welding or resistance welding;

the second tab 14 is disposed on the planar side wall 101, the second tab 14 extends along the second direction, so that the plane of the larger surface of the second tab 14 is disposed parallel to the first surface 11 or the second surface, the cell body is applied to the battery, and the second tab 14 is connected to a cover plate in the battery case.

The application range of this example electricity core body is more extensive, can satisfy user's different demands.

Alternatively, referring to fig. 1-2, the outer sidewall 10 forms a planar sidewall 101 and an arcuate surface 102 connected to the planar sidewall 101.

For example, the cell structure of the present example is a D-type structure, and with respect to a cylindrical cell, a first tab 13 may be disposed on the planar side wall 101 in the D-type cell body, and a first tab 13 and a second tab 14 may be disposed on the planar side wall 101, where the first tab 13 may be a positive tab or a negative tab, and in the case where the first tab 13 is a positive tab, the second tab 14 is a negative tab.

In order to be suitable for the structure of the D-type cell body, the D-type cell body is applied to a battery, and a housing of the battery is also in a D-type structure, wherein the housing forms a plane side part and an arc-shaped part connected with the plane side part, the plane side part is used as a leading-out part, the first tab 13 or the second tab 14 is connected with the plane side part, and the plane side part of the battery housing is used for leading out the first tab 13 or the second tab 14.

In an alternative embodiment, an arc chamfer is formed at the joint of the planar side wall 101 and the arc surface 102;

the cell structure of this example is applied to the battery field, and plane lateral wall 101 and arc chamfer can be as the guide part, under the guide effect of plane lateral wall 101 and arc chamfer, assembles the cell structure in the shell of battery more smoothly.

In an alternative embodiment, the first tab 13 and the second tab 14 are both provided on the planar side wall 101; or the first tab 13 is arranged on the planar side wall 101, and the second tab 14 is arranged on the arc-shaped surface 102.

Referring to fig. 2, in the present embodiment, the first tab 13 and the second tab 14 are both disposed on the planar side wall 101, preferably, the cell structure of the present embodiment is formed by a lamination method, a pole piece of the cell is cut according to the cell structure, the pole piece of the cell structure is cut into a D-shaped structure, the cell structure is applied to a battery, and the first tab 13 and the second tab 14 are led out from the same side of a battery case.

Assembling the cell structure of the present example into a battery for use, wherein the electronic equipment is provided with a first contact and a second contact, the first contact is connected with a first tab 13, and the second contact is connected with a second tab 14; compared with the prior art, the electronic equipment has the advantages that the first contact and the second contact are located on different sides of the electronic equipment in order to be connected with the battery, the risk of mistakenly touching the contacts of the electronic equipment is reduced, and the use safety of the electronic equipment and the battery is improved.

Referring to fig. 1, the first tab 13 is provided with a planar side wall 101 for coupling with a planar side portion of the battery case, and the second tab 14 is provided on an arc-shaped surface 102 for coupling with an arc-shaped portion of the battery case, wherein the planar side portion serves as a lead-out portion of the first tab 13, and the arc-shaped portion of the battery case serves as a lead-out portion of the second tab 14.

The shape of this example electricity core structure is D type structure to satisfy the demand of the different occasions of user, make things convenient for electric core structure and electronic equipment to realize being connected.

Alternatively, as shown with reference to fig. 3-5, the outer sidewall 10 forms two of the planar sidewalls 101, including a first planar sidewall 101a and a second planar sidewall 101 b;

wherein the first planar sidewall 101a and the second planar sidewall 101b are adjacent and connected, and the outer sidewall 10 comprises an arc-shaped surface 102, wherein one end of the arc-shaped surface 102 is connected with the first planar sidewall 101a, and the other end is connected with the second planar sidewall 101 b;

or the first planar side wall 101a and the second planar side wall 101b are disposed oppositely, the outer side wall 10 includes two arc-shaped surfaces, one end of each of the two arc-shaped surfaces 102 is connected to the first planar side wall 101a, and the other end of each of the two arc-shaped surfaces 102 is connected to the second planar side wall 101 b.

In a specific embodiment, referring to fig. 5, a first arc-shaped chamfer is formed at the joint of the first planar side wall 101a and the second planar side wall 101b, a second arc-shaped chamfer is formed at the joint of the first planar side wall 101a and the arc-shaped surface 102, and a third arc-shaped chamfer is formed at the joint of the second planar side wall 101b and the arc-shaped surface 102, in the process of assembling the cell structure into the battery of the present embodiment, the first planar side wall 101a, the second planar side wall 101b, and the first arc-shaped chamfer, the second arc-shaped chamfer, and the third arc-shaped chamfer can be used as guiding parts, and under the guiding action of the guiding parts, the cell structure can be assembled into the casing of the battery more smoothly.

In a specific embodiment, referring to fig. 3 to fig. 4, the cell structure includes two arc-shaped surfaces 102 and two planar side walls 101 connected to the two arc-shaped surfaces 102, wherein the two arc-shaped surfaces 102 are symmetrically disposed, and the two planar side walls 101 are symmetrically disposed, and the cross section of the cell structure in this example is in a track structure.

The two arc-shaped surfaces 102 include a first arc-shaped surface 102a and a second arc-shaped surface 102b, one end of the first arc-shaped surface 102a is connected with one end of the first planar side wall 101a, the other end of the first arc-shaped surface 102a is connected with one end of the second planar side wall 101b, one end of the second arc-shaped surface 102b is connected with the other end of the first planar side wall 101a, and the other end of the second arc-shaped surface 102b is connected with the other end of the second planar side wall 101b, wherein the connection between the first arc-shaped surface 102a and the first and second planar side walls 101a and 101b is formed with an arc-shaped chamfer, and the connection between the second arc-shaped surface 102a and the second and second planar side walls 101a and 101b is formed with an arc-shaped chamfer. The first planar side wall 101a, the second planar side wall 101a, and the formed arc-shaped chamfer are all guiding parts, and under the guiding action of the guiding parts, the cell structure is more conveniently assembled into the shell of the battery.

The shape of this example electricity core structure is more diversified to satisfy the demand of the different occasions of user.

In an alternative embodiment, the first tab 13 is disposed on the first planar side wall 101a and the second tab 14 is disposed on the second planar side wall 101 b; or both the first tab 13 and the second tab 14 are provided on the first planar side wall 101a or the second planar side wall 101 b.

In a specific embodiment, referring to fig. 3-4, the cell body is applied to a battery, and in order to adapt to the shape and structure of the cell body 1, the structure of the battery case is adapted to the structure of the cell body 1, in this example, the first tab 13 is provided on the first planar side wall 101a for connection with the first planar side of the battery case, and the second tab 14 is provided on the second planar side wall 101b for connection with the second planar side of the battery case.

In an alternative embodiment, the first tab 13 and the second tab 14 are both disposed on the first planar sidewall 101a, the cell body is applied to the battery, and the first tab 13 and the second tab 14 are led out from the same side of the battery case.

In a specific embodiment, referring to fig. 5, in this example, the first tab 13 is provided on the first planar side wall 101a for connection with the first planar side of the battery case, the second tab 14 is provided on the second planar side wall 101b for connection with the second planar side of the battery case, and the first tab 13 and the second tab 14 can be drawn from different sides of the battery case.

In an alternative embodiment, the first tab 13 and the second tab 14 are both disposed on the first planar side wall 101a, the cell body is applied to the battery, and the first tab 13 and the second tab 14 are led out from the same side of the battery case.

The cell structure of the present example is assembled into a battery, the battery has a first plane side portion and a second plane side portion matched with the first plane side wall and the second plane side wall, the first tab 13 and the second tab 14 are respectively connected with the first plane side portion or the second plane side portion, and the first plane side portion and/or the second plane side portion are connected with an electronic device, so that the connection reliability of the battery and the electronic device is improved.

According to a second aspect of the present disclosure, there is provided a method for preparing the cell structure described above, the method comprising: and flattening the manufactured battery cell body at preset pressure and within preset time so that the outer side wall 10 of the battery cell body forms at least one planar side wall 101.

For example, flatten cylindrical electric core for the electric core lateral wall is including the plane lateral wall of flattening form and the arcwall face of being connected with the plane lateral wall, and when electric core body was allotted with battery case, the arcwall face of electric core body coincided with the arcwall face of shell, and the plane lateral wall of electric core body is regional laminating with the plane lateral wall of shell.

The lithium ion battery improves the utilization rate of the inner cavity of the battery and the capacity of the battery, and solves the problem of tab fracture caused by pole piece stress to a certain extent.

According to a third aspect of the present disclosure, a battery is provided. Referring to fig. 6 to 12, the battery includes the above cell structure, a casing 3 and a cover plate 2, wherein the casing 3 and the cover plate 2 enclose a receiving space;

for example, the housing 3 is a cavity structure with an opening, and the cover plate 2 covers the opening and is welded with the housing 3. The material of the shell 3 and the material of the cover plate 2 are both made of metal.

The housing 3 forms at least one plane side part 31, the plane of the plane side part 31 is vertical to the plane of the cover plate 2, and the plane side part 31 is used for connecting with electronic equipment;

the battery cell structure is arranged in the accommodating space, the plane side wall 101 of the battery cell structure is matched with the plane side part 31 of the shell 3, the first pole lug 13 is connected with the plane side part 31, and the second pole lug 14 is connected with the shell 3 or the cover plate 2.

The shape of traditional battery among the prior art is cylindrical, and wherein the lateral wall of cylindrical battery is the curved surface, and when cylindrical battery was connected with electronic equipment, the lateral wall of battery was less with electronic equipment's area of contact, and the battery is fixed insecure with electronic equipment, influences the safety in utilization of battery.

In the present disclosure, the first tab 13 is connected to the planar side portion 31, the first tab 13 is led out through the planar side portion 31, the second tab 14 is connected to the housing 3 or the cover plate 2, and the second tab 14 is led out through the housing 3 or the cover plate 2. For example, the side wall of the outer case 3 is formed with a first region provided with the planar side portion 31 and a second region not provided with the planar side portion 31, and the second tab 14 may be connected to the first region of the outer case 3 by resistance welding, laser welding, or the like, or to the second region of the outer case 3 by resistance welding, laser welding, or the like, or the second tab 14 may be connected to the cover plate 2 by resistance welding, laser welding, or the like.

Compared with the prior art, the present disclosure provides a battery, at least one planar side portion 31 is formed on a side wall of the battery, and the first tab 13 is connected with the planar side portion 31 to lead out the first tab 13.

In the present example, the first tab 13 is connected to the planar side portion 31, and the planar side portion 31 is used for mechanically and electrically connecting with the electronic device, and in the present example, the planar side portion 31 is used for mechanically and electrically connecting with the electronic device, so that the connection area between the battery and the electronic device is increased, the firmness of the connection between the battery and the electronic device is improved, and for example, the battery can be fixed on the electronic device by means of magnetic attraction or adhesion; in the present example, the planar side portion 31 is electrically connected to the electronic device, and the first tab 13 is led out through the planar side portion 31, so that the connection between the battery and the electronic device is more conveniently realized, the application range of the battery disclosed herein is wider, and the requirements of different types of electronic devices are met. For example, the electronic device may be a smartphone, a tablet, a smart wearable device, a headset, or the like.

Optionally, the housing 3 has one of the planar side portions 31 and one of the arc-shaped portions 32 connected to the planar side portion 31.

Referring to fig. 1-2, the battery cell structure is D-shaped, and in order to match the shape of the battery cell body with the D-shaped structure, the battery case 3 is D-shaped; the cell structure is arranged in a receiving space formed by the housing 3 and the cover plate 2. In the D-type battery of this example, the flat side portion 31 is connected to the first tab 13, and the flat side portion 31 is a flat lead-out portion for leading out an electrode, as compared with a circular battery.

In an alternative embodiment, the junction of the planar side portion 31 and the arcuate portion 32 is formed with an arcuate chamfer.

In the case where the battery is mounted to the electronic device, the flat side portion 31 and the arc-shaped chamfer can serve as a guide portion, and the battery can be more smoothly mounted to the electronic device by the guide of the flat side portion 31 and the arc-shaped chamfer.

In an alternative embodiment, the first tab 13 and the second tab 14 are both connected to the planar side portion 31, or the first tab 13 is connected to the planar side portion 31 and the second tab 14 is connected to the arc portion 32.

In the use process of the battery, the electronic equipment is provided with a first contact and a second contact, the first contact is connected with the first lug 13, the second contact is connected with the second lug 14, the first lug 13 and the second lug 14 are positioned on the same side and are led out through the plane side part 31, and the first contact and the second contact are positioned on the same side of the electronic equipment.

Referring to fig. 1, the first tab 13 is drawn out through a plane side portion 31, and the second tab 14 is drawn out through an arc portion 32, wherein the plane side portion 31 serves as a drawing portion of the first tab 13, and the arc portion 32 serves as a drawing portion of the second tab 14.

Alternatively, the housing 3 has two of the planar side portions 31, the two planar side portions 31 including a first planar side portion 31a and a second planar side portion 31 b;

wherein the first planar side portion 31a and the second planar side portion 31b are adjacent and connected, the housing 3 comprises an arc portion 32, one end of the arc portion 32 is connected with the first planar side portion 31a, and the other end is connected with the second planar side portion 31 b;

alternatively, the first planar side portion 31a and the second planar side portion 31b are disposed to face each other, and the housing 3 includes two arc portions 32, one ends of the two arc portions 32 are connected to the first planar side portion 31a, and the other ends of the two arc portions 32 are connected to the second planar side portion 31 b.

In a specific implementation, as shown in fig. 9-10, a first arc-shaped chamfer is formed at the joint of the first plane side portion 31a and the second plane side portion 31b, a second arc-shaped chamfer is formed at the joint of the first plane side portion 31a and the arc-shaped portion 32, and a third arc-shaped chamfer is formed at the joint of the second plane side portion 31b and the arc-shaped portion 32, in the case where the battery is assembled to the electronic device, the first plane side portion 31a, the second plane side portion 31b, and the first arc-shaped chamfer, the second arc-shaped chamfer, and the third arc-shaped chamfer can be used as guide portions, and the battery can be assembled to the electronic device more smoothly under the guide action of the guide portions.

Alternatively, the first tab 13 is connected to the first flat surface side 31a, and the second tab 14 is connected to the second flat surface side 31 b.

Referring to fig. 9-10, the first tab 13 is led out through the first planar side 31a, and the second tab 14 is led out through the second planar side 31b, and in this example, the first tab can be connected to the electronic device through the first planar side 31a and/or the second planar side 31b, so that the connection reliability between the battery and the electronic device is improved.

In a specific implementation, referring to fig. 6 to 8, the first plane-side portion 31a and the second plane-side portion 31b are disposed opposite to each other, one end of each of the two arc-shaped portions 32 is connected to the first plane-side portion 31a, and the other end of each of the two arc-shaped portions 32 is connected to the second plane-side portion 31b, so that the cross section of the battery of the present embodiment has a racetrack structure;

alternatively, the first tab 13 is connected to the first flat surface side 31a, and the second tab 14 is connected to the second flat surface side 31 b.

Referring to fig. 7 to 8, the outer case of the battery of this example includes two arc-shaped portions 32 and two planar side portions 31 connected to the two arc-shaped portions 32, wherein the two arc-shaped portions 32 are symmetrically disposed and the two planar side portions 31 are symmetrically disposed.

The two arc-shaped portions 32 include a first arc-shaped portion 32a and a second arc-shaped portion 32b, one end of the first arc-shaped portion 32a is connected to one end of the first planar side portion 31a, the other end of the first arc-shaped portion 32a is connected to one end of the second planar side portion 31b, one end of the second arc-shaped portion 32b is connected to the other end of the first planar side portion 31a, and the other end of the second arc-shaped portion 32b is connected to the other end of the second planar side portion 31b, wherein the joints of the first arc-shaped portion 32a with the first planar side portion 31a and the second planar side portion 31b are formed with arc-shaped chamfers, and the joints of the second arc-shaped portion 32a with the second planar side portion 31a and the second planar side portion 31b are formed with arc-shaped cham. The first planar side portion 31a, the second planar side portion 31a, and the formed arc-shaped chamfer are all guiding portions, and the assembly of the battery and the electronic device is facilitated under the guiding action of the guiding portions.

Referring to fig. 6 to 8, in this example, the first tab 13 is led out through a first plane side 31a, the second tab 14 is led out through a second plane side 31b, and the first tab 13 and the second tab 14 can be symmetrically led out from different plane sides 31. This example can be connected to the electronic device through the first planar side portion 31a and/or the second planar side portion 31b, which improves the reliability of connection between the battery and the electronic device.

Alternatively, referring to fig. 7-8, as shown in fig. 10, a first through hole 311 is formed in the planar side portion 31, the first tab 13 corresponds to the first through hole 311, and the first through hole 311 exposes the first tab 13;

the planar side portion 31 includes a conductive portion 312, the conductive portion 312 is disposed at the first through hole 311 and covers the first through hole 311, and the first tab 13 is connected to the conductive portion 312.

The housing 3 of the battery, for example, includes a planar side portion 31, wherein the planar side portion 31 is provided with a first through hole 311, the first through hole 311 corresponds to a position where the first tab 13 of the cell structure is disposed, so that the first through hole 311 exposes the first tab 13, the second tab 14 of the cell structure may be connected to another sidewall of the housing 3, or the second tab 14 may be connected to the cover plate 2; the conductive part 312 of the planar side part 31 is covered at the first through hole 311, wherein the first tab 13 of the cell structure is connected to the inner surface of the conductive part 312, wherein the conductive part 312 is one of the positive electrode or the negative electrode of the battery, for example, the conductive part 312 is the positive electrode of the battery, and the other side wall or the cover plate of the housing can be the negative electrode of the battery, so as to facilitate current extraction.

The battery case 3 includes two of the planar side portions 31, for example, a first planar side portion 31a and a second planar side portion 31b, the first planar side portion 31a and the second planar side portion 31b having the first through holes opened therein, respectively, the first through hole 311 opened in the first planar side portion 31a corresponding to a position where the first tab 13 is provided, and the first through hole opened in the second planar side portion 31b corresponding to a position where the second tab 14 is provided; the conductive part 312 of the first planar side 31a is covered at the first through hole, wherein the first tab 13 of the cell structure is connected to the inner surface of the conductive part, and the conductive part 312 of the second planar side 31b is covered at the first through hole, wherein the second tab 14 of the cell structure is connected to the inner surface of the conductive part. In the case where the conductive portion of the first planar side portion 31a can be used as a positive electrode of the battery, the conductive portion of the second planar side portion 31b can be used as a negative electrode of the battery, so as to facilitate current extraction.

For convenience of understanding, the first tab 13 of the cell structure is used as a positive tab of the cell structure, the positive tab of the cell structure is connected with the inner surface of the conductive part, and one end of the conductive part is set as a positive leading-out end; the battery cell structure is provided with an insulating layer, and the insulating layer prevents a tab in the battery cell structure from being short-circuited with a pole piece, so that an insulating effect is achieved. The material of the insulating layer may be plastic (PP, PEK, PEEK, PTFE, etc.), ceramic, etc.

In an alternative embodiment, referring to fig. 11 to 12, the cover plate 2 may further be provided with a first through hole 311, the first tab 13 corresponds to the first through hole 311, and the first through hole 311 exposes the first tab 13; the planar side portion 31 includes a conductive portion 312, the conductive portion 312 is disposed at the first through hole 311 and covers the first through hole 311, and the first tab 13 is connected to the conductive portion 312.

Alternatively, as shown in fig. 3 to 7, an insulating sealing portion 313 is disposed on the planar side portion 31, a second through hole 3131 corresponding to the first through hole 311 is disposed on the insulating sealing portion 313, the insulating sealing portion 313 is located between the planar side portion 31 and a conductive portion 312, and the conductive portion 312 is disposed at the first through hole 311 through the insulating sealing portion 313.

For example, the second through hole 3131 provided in the insulating sealing portion 313 is provided opposite to and communicates with the first through hole 311; an insulating seal portion 313 is provided between the planar side portion 31 and the conductive portion 312, and the conductive portion 312 is provided at the first through hole 311 through the insulating seal portion 313, wherein the insulating seal portion 313 serves for insulation and connection.

In a specific embodiment, the conductive part 312 is disposed on the battery by heat treatment through an insulating film, and covers the first through hole 311; the insulating rubber sheet can play the role of connection and sealing, and the material of the insulating rubber sheet can be plastic (PP, PEK, PEEK, PTFE and the like).

Alternatively, referring to fig. 7 to 8, as shown in fig. 10, the conductive portion 312 includes a conductive plate 3121 and a conductive plate 3122 disposed on the conductive plate 3121, an extension portion 31221 is disposed on the conductive plate 3122, and a plane of the extension portion 31221 forms an included angle with a plane of the planar side portion 31.

The conductive portion 312 of the present example includes a conductive plate 3121 and a conductive sheet 3122 disposed on the conductive plate 3121, wherein the conductive plate 3121 and the conductive sheet 3122 can be connected by welding, and the extension portion 31221 disposed on the conductive sheet 3122 is located on a different plane from the plane side portion 31, so that when the battery is assembled with the electronic device, the extension portion 31221 can be conveniently fixed and connected with the electronic device.

Optionally, as shown in fig. 13, a protruding portion 3123 is disposed on a side of the conductive portion 312 close to the first through hole 311, and the protruding portion 3123 extends into the receiving space through the first through hole 311 to connect with the first tab 13. The protruding portion 3123 of this example can extend into the inner cavity of the housing 3 to connect with the first tab 13 or the second tab 14 of the cell structure, so as to facilitate laser welding or resistance welding of the electrode 31 and the conductive portion 312.

According to a fourth aspect of the present disclosure, there is provided an electronic apparatus including an apparatus main body and the battery of any one of the above, the battery being connected to the apparatus main body. For cylinder type battery among the prior art, the shell of this disclosure battery has at least one plane lateral wall, first utmost point ear with plane lateral wall is connected, second utmost point ear with shell or cover connection, when the battery uses electronic equipment, has improved the fastness of connection of battery and electronic equipment.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.