CN216563457U

CN216563457U - Battery, battery pack, and electronic apparatus

Info

Publication number: CN216563457U
Application number: CN202123363368.9U
Authority: CN
Inventors: 李轶
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-05-17
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses a battery, comprising: the battery comprises a cylindrical body, a battery cell, a bottom shell, a first pole, a connecting ring and a cover plate, wherein the battery cell is coaxially positioned in the cylindrical body and comprises a first pole lug and a second pole lug; the bottom shell closes one end of the cylindrical body and is provided with an opening; the first pole penetrates through the opening and is electrically connected with a first pole lug of the battery cell, and part of the first pole is exposed out of the bottom shell; the connection ring is positioned in the cylindrical body, and the radial inner side of the connection ring is electrically connected with the second pole lug of the battery cell; the cover plate is operable to close the other end of the cylindrical body; the radial outer side of the continuous ring can be pressed and abutted on the cover plate or the cylindrical body in an operable manner and is electrically connected with the pressed and abutted cover plate or the cylindrical body; the first tab and the first pole are both any one of the positive pole and the negative pole, and the second tab is the other one of the positive pole and the negative pole. The connection ring is pressed so as to abut on the lid plate or the cylindrical body, and the risk of welding through the battery case does not occur.

Description

Battery, battery pack, and electronic apparatus

Technical Field

The embodiment of the utility model relates to the technical field of batteries, in particular to a battery, a battery pack and electronic equipment.

Background

At present, the columnar lithium ion battery mainly adopts a full-lug design scheme, and the main process flow is as follows: and rubbing the positive and negative electrode lugs of the battery core to be flat, connecting the connection ring with the rubbing flat area of the positive and negative electrode lugs of the battery core for electric connection, connecting the connection ring with the battery shell through welding to form a positive electrode and a negative electrode on the battery shell, and finally finishing the manufacture of the whole battery in a sealing mode.

At present, the connection mode of the connection ring and the battery shell is not completely shaped, and the main connection mode in the market is to connect the connection ring and the battery shell in a laser welding mode, so that the electrified effect of the battery shell is achieved. Because the circle that continues links to each other through laser welding and battery case, therefore battery case exists and welds the risk of wearing and unable detection. And the plating layer of the battery shell is knocked off by laser welding, so that the battery shell is easy to rust.

SUMMERY OF THE UTILITY MODEL

An object of an embodiment of the present invention is to provide a battery, a battery pack, and an electronic apparatus, which solve problems such as welding easily penetrating a case and causing the case to rust.

To solve the above technical problem, an embodiment of the present invention provides a battery including:

a cylindrical body;

the battery cell is coaxially positioned in the cylindrical body and comprises a first electrode lug and a second electrode lug;

the bottom shell is used for sealing one end of the cylindrical body and is provided with an opening;

the first pole penetrates through the opening and is electrically connected with the first pole lug of the battery cell, and part of the first pole is exposed out of the bottom shell;

the connection ring is positioned in the cylindrical body, and the radial inner side of the connection ring is electrically connected with the second pole lug of the battery cell;

a cover plate operable to close the other end of the cartridge;

wherein, the radial outer side of the connecting ring is pressed and abutted on the cover plate or the cylindrical body in an operable way and is electrically connected with the cover plate or the cylindrical body which is pressed and abutted; the first electrode lug and the first electrode are both any one of a positive electrode and a negative electrode, and the second electrode lug is the other one of the positive electrode and the negative electrode.

Compared with the prior art, the connection ring is pressed to abut against the cover plate or the cylindrical body, the connection ring is electrically connected with one of the cover plate and the cylindrical body, and compared with a welding mode, the mode that the connection ring abuts against the cover plate or the cylindrical body is safer, the risk that the battery shell is welded through cannot occur, and the practicability of the battery can be improved.

In an embodiment, a circle of bosses are arranged in the cylindrical body, the bosses are positioned on one side, away from the first pole, of the battery cell, and the bosses support the continuous ring and the cover plate;

the battery also comprises an insulating ring, and the insulating ring is positioned between the cylindrical body and the continuous ring; or the insulating ring is positioned between the splicing ring and the cover plate;

the upper end of the cylindrical body extends towards the axial direction of the cylindrical body to form a circle of pressing ring, and the pressing ring can be used for operably pressing the continuous ring, the cover plate and the insulating ring on the boss.

In one embodiment, the boss is formed by recessing the cylindrical body in the axial direction of the cylindrical body along the circumferential direction.

In one embodiment, the splice ring is operable to be pressed against the barrel;

the radial inner end of the connecting ring is electrically connected with the second pole lug, and the radial outer end of the connecting ring is arranged on the boss; the insulating ring coats the radial outer end of the cover plate, the insulating ring and the cover plate are located on the upper surface of the radial outer end of the continuous ring, and the pressing ring is pressed on the insulating ring.

In one embodiment, the splice ring is operably pressed against the cover plate;

the inner end of the connecting ring in the radial direction is electrically connected with the second pole lug, the insulating ring covers the cover plate and the outer end of the connecting ring in the radial direction, the insulating ring, the cover plate and the connecting ring are located on the boss, and the pressing ring presses the insulating ring.

In one embodiment, the material of the insulating ring is a flexible insulating material.

In one embodiment, the insulating ring is a rubber ring.

In one embodiment, the cover plate is provided with an exhaust hole, and the cover plate is further provided with an explosion-proof valve which is arranged at the exhaust hole.

The present invention provides a battery pack, including:

a plurality of the above-described batteries;

a housing, each of the batteries being located within the housing;

the flexible circuit piece is electrically connected with each battery, a battery pack anode and a battery pack cathode are arranged on the flexible circuit piece, and the battery pack first pole and the battery pack second pole are exposed outside the shell.

The electronic equipment comprises the battery.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.

Fig. 1 is a schematic structural view of a battery in a first embodiment of the utility model;

FIG. 2 is a front view of FIG. 1;

fig. 3 is a sectional view of a battery in a first embodiment of the utility model;

FIG. 4 is an enlarged view at A in FIG. 3;

FIG. 5 is an enlarged view at B in FIG. 3;

fig. 6 is a state diagram at the time of sealing the battery according to the first embodiment of the present invention;

FIG. 7 is a cross-sectional view showing another form of the battery according to the first embodiment of the present invention;

FIG. 8 is an enlarged view at C in FIG. 7;

fig. 9 is a sectional view showing a further form of the battery in the first embodiment of the utility model;

FIG. 10 is an enlarged view at D of FIG. 9;

fig. 11 is a state diagram at the time of sealing the battery according to the first embodiment of the present invention;

fig. 12 is an enlarged view at E in fig. 11.

Description of reference numerals:

1. a cylindrical body; 11. a boss; 12. pressing a ring; 2. an electric core; 3. a bottom case; 4. a first pole; 5. connecting rings; 6. a cover plate; 7. an explosion-proof valve; 8. an insulating sheet; 9. an insulating ring; 10. and a current collecting sheet.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.

In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Throughout the specification and claims, the word "comprise" and variations thereof, such as "comprises" and "comprising," are to be understood as an open, inclusive meaning, i.e., as being interpreted to mean "including, but not limited to," unless the context requires otherwise.

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings in order to more clearly understand the objects, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.

An embodiment battery of the present invention is described below with reference to the accompanying drawings, as shown in fig. 1 to 5, the battery including: barrel-shaped body 1, electric core 2, drain pan 3, first utmost point 4, circle 5 and apron 6 continue, wherein, electric core 2 is located barrel-shaped body 1 to with the coaxial setting of this barrel-shaped body 1, electric core 2 includes first utmost point ear and second utmost point ear. The bottom case 3 encloses one end of the cylindrical body 1, and an opening is formed on the bottom case 3, the first pole 4 penetrates through the opening to be electrically connected with the first tab of the battery cell 2, and meanwhile, a part of the first pole 4 is exposed outside the bottom case 3. The continuous ring 5 is positioned in the cylindrical body 1, and the radial inner side of the continuous ring 5 is electrically connected with the second pole lug of the battery core 2. The cover plate 6 can close the other end of the cylindrical body 1, the radially outer side of the connection ring 5 is pressed against the cover plate 6 or the cylindrical body 1, and when the connection ring 5 is pressed against the cover plate 6 or the cylindrical body 1, the connection ring 5 is electrically connected to the cover plate 6 or the cylindrical body 1. The above-mentioned splicing ring 5 is made of an electrically conductive material.

The first tab and the first electrode 4 of the battery are both any one of a positive electrode and a negative electrode, and the second tab is the other one of the positive electrode and the negative electrode. In the present embodiment, the first tab and the first electrode 4 of the battery are both positive electrodes, and the second electrode is a negative electrode, and the cylindrical body 1 or the cover plate 6 is a negative electrode of the battery because the connection ring 5 abuts against the cylindrical body 1 or the cover plate 6. Of course, in some embodiments, the first tab and the first pole 4 may be both negative electrodes, and the second pole may be a positive electrode, in which case the cover plate 6 or the cylindrical body 1 is the negative electrode of the battery.

Specifically, in the present embodiment, the cylindrical body 1 has a circle of bosses 11 therein, the bosses 11 are located on a side of the electric core 2 facing away from the first pole 4, and the bosses 11 are used for supporting the connection ring 5 and the cover plate 6. Meanwhile, the battery pack further comprises an insulating ring 9, the insulating ring 9 is located between the cover plate 6 and the connection ring 5, the upper end of the cylindrical body 1 extends towards the axial direction of the cylindrical body 1 to form a circle of pressing ring 12, and the pressing ring 12 can tightly press the connection ring 5, the cover plate 6 and the insulating ring 9 on the boss 11.

Specifically, the boss 11 is formed by recessing one circle of the cylindrical body 1 in the axial direction of the cylindrical body 1 along the circumferential direction, but as shown in fig. 7 and 8, in some embodiments, the boss 11 may be a circle of boss 11 disposed on the inner wall of the cylindrical body 1, and the boss 11 may be glued on the inner wall of the cylindrical body 1, for example.

In addition, in the present embodiment, as shown in fig. 3 and 4, the radially inner end of the connection ring 5 is electrically connected to the second tab, and the radially outer end of the connection ring 5 is disposed on the boss 11, as can be seen from the above description, in the present embodiment, the second tab is a negative electrode, so the connection ring 5 is electrically connected to the cylindrical body 1, and the cylindrical body 1 is a negative electrode of the battery. The insulating ring 9 covers the radial outer side of the column cover plate 6, the insulating ring 9 is placed on the upper surface of the radial outer end of the continuous ring 5 after covering the radial outer end of the cover plate 6, and then the pressing ring 12 presses on the insulating ring 9. By adopting the method, the cover plate 6 and the connecting ring 5 can be pressed on the boss 11, at the moment, the connecting ring 5 is abutted against the boss 11, namely, the connecting ring 5 is abutted against the cylindrical body 1, the connecting ring 5 is electrically connected with the cylindrical body 1, and the cylindrical body 1 is negatively charged.

Of course, as shown in fig. 7 and 8, when the boss 11 is not formed by the inward recess of the side wall of the cylindrical body 1, the connection ring 5 can extend upward to be attached to the inner wall of the cylindrical body 1, so that when the pressing ring 12 presses the insulating ring 9, the connection ring 5 can still be pressed against the cylindrical body 1, and at this time, the cylindrical body 1 can still be charged.

Specifically, the insulating ring 9 is made of a flexible insulating material, and when the insulating ring 9 is made of a flexible material, the gap between the cylindrical body 1, the lid plate 6, and the connection ring 5 can be sealed, as well as the purpose of insulation. Further preferably, the insulating ring 9 is a rubber ring. In addition, specifically, in this embodiment, the battery cell 2 is an electrical winding core.

Meanwhile, as shown in fig. 1, the cover plate 6 is further provided with an exhaust hole, the cover plate 6 is further provided with an explosion-proof valve 7, and the explosion-proof valve 7 is arranged at the exhaust hole to seal the exhaust hole.

Specifically, as shown in fig. 6, the battery packaging step includes pushing the sidewall of the cylindrical body 1 by using a jig, so that the sidewall of the cylindrical body 1 is recessed inward to form the boss 11, connecting the radial inner end of the connection ring 5 with the negative electrode of the battery cell 2, and placing the radial outer end of the connection ring 5 on the boss 11. Then the insulating ring 9 is placed on the continuing ring 5, the cover plate 6 is placed on the insulating ring 9, the jig is adopted to press the upper end of the cylindrical body 1 downwards to form a pressing ring 12, the pressing ring 12 is pressed on the insulating ring 9, so that the cover plate 6 and the continuing ring 5 are pressed on the boss 11, and at the moment, the insulating ring 9 covers the radial outer end of the cover plate 6.

As shown in fig. 5, the first pole 4 is a single pole, a current collecting plate 10 is disposed between the first pole 4 and the cell 2, the current collecting plates 10 are electrically connected to first tabs of the cell 2, and a part of the first pole 4 is located outside the bottom case 3 to form a positive pole. An insulating sheet 8 is provided between the current collecting sheet 10, the tubular body 1, and the first electrode 4.

Of course, in some embodiments, as shown in fig. 9 to 12, the connection ring 5 may also be held against the cover plate 6, in which case the cover plate 6 becomes a negative electrode, and the insulating ring 9 is located between the connection ring 5 and the cylindrical body 1, so as to avoid the electrical connection between the connection ring 5 and the cylindrical body 1.

Specifically, as shown in fig. 10, the radially inner end of the connection ring 5 is electrically connected to the second tab, the insulating ring 9 covers the pillar cover plate 6 and the radially outer end of the connection ring 5, the insulating ring 9, the cover plate 6 and the connection ring 5 are all located on the boss 11, and the pressing ring 12 is located on the insulating ring 9.

Specifically, as shown in fig. 11 and 12, the battery packaging step includes firstly pushing the sidewall of the cylindrical body 1 by using a jig so that the sidewall of the cylindrical body 1 is recessed inward to form the boss 11, then connecting the radial inner end of the continuous ring 5 with the negative electrode of the battery cell 2, and placing the insulating ring 9 on the boss 11. The radial outer end of the connection ring 5 is placed on the insulating ring 9, the cover plate 6 is placed on the upper surface of the radial outer end of the connection ring 5, the upper end of the cylindrical body 1 is pressed downwards by adopting a jig to form a pressing ring 12, the pressing ring 12 is pressed on the insulating ring 9, so that the cover plate 6 and the connection ring 5 are pressed on the boss 11, and the insulating ring 9 covers the radial outer end of the cover plate 6 and the radial outer end of the connection ring 5.

The second embodiment of the present invention also provides a battery pack including a plurality of the batteries of the first embodiment, a case, and a flexible circuit member; each battery sets up in the casing side by side, and the flexible circuit spare is connected with each battery electricity, and has battery package positive pole and battery package negative pole on the flexible circuit spare, and battery package positive pole and battery package negative pole expose outside the casing. The flexible circuit member may be a flexible circuit board.

The third embodiment of the present invention further provides an electronic device, which includes the battery pack in the second embodiment, and the electronic device may be a vehicle such as an automobile or an electric train, or another device requiring the battery cell 2.

While the preferred embodiments of the present invention have been described in detail above, it should be understood that aspects of the embodiments can be modified, if necessary, to employ aspects, features and concepts of the various patents, applications and publications to provide yet further embodiments.

These and other changes can be made to the embodiments in light of the above detailed description. In general, in the claims, the terms used should not be construed to be limited to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.

Since the above embodiments correspond to each other, the embodiments are implemented in cooperation with each other. The technical details mentioned in one embodiment are valid in other embodiments, and the technical effects achieved in one embodiment can be achieved in other embodiments as well. Accordingly, the relevant technical details mentioned in one embodiment may also be applied in other embodiments.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the utility model, and that various changes in form and details may be made therein without departing from the spirit and scope of the utility model in practice.

Claims

1. A battery, comprising:

a cylindrical body;

a cover plate operable to close the other end of the cartridge;

2. The battery of claim 1, wherein the cylindrical body has a ring of bosses therein, the bosses are located on a side of the cell facing away from the first pole, and the bosses support the continuous ring and the cover plate;

3. The battery according to claim 2, wherein the projections are formed by recessing the cylindrical body in the axial direction of the cylindrical body in a circle in the circumferential direction.

4. The battery of claim 2, wherein the splice ring is operably pressed against the cartridge;

5. The battery of claim 2, wherein the splice ring is operably pressed against the cover plate;

6. The battery of claim 2, wherein the material of the insulating ring is a flexible insulating material.

7. The battery of claim 6, wherein the insulating ring is a rubber ring.

8. The battery as claimed in claim 1, wherein the cover plate is provided with an exhaust hole, and the cover plate is further provided with an explosion-proof valve arranged at the exhaust hole.

9. A battery pack, comprising:

a plurality of batteries according to any one of claims 1 to 8;

a housing, each of the batteries being located within the housing;

10. An electronic device characterized in that the electronic device comprises the battery of claim 9.