CN219203443U

CN219203443U - Cylindrical battery and electronic equipment

Info

Publication number: CN219203443U
Application number: CN202223571382.2U
Authority: CN
Inventors: 单雪燕
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: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-16
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to the technical field of batteries, in particular to a cylindrical battery and electronic equipment. The cylindrical battery comprises a shell, a pole column and a switching piece, wherein the shell comprises an end wall and a surrounding wall surrounding the periphery of the end wall; the pole comprises a limiting part and a connecting part, the limiting part is positioned outside the end wall, the connecting part penetrates through the end wall and is positioned in the end wall, the connecting part is provided with a containing groove, and the groove side wall of the containing groove is provided with a clamping groove; the adapter piece includes first adapter portion, second adapter portion and joint spare, second adapter portion connects in first adapter portion, joint spare elastic connection is in second adapter portion, second adapter portion can stretch into the holding tank in, the joint spare can be blocked and locate in the draw-in groove, the utmost point post is connected with the adapter piece not only has direct contact electricity, still through joint mechanical connection of joint spare and draw-in groove, need not to carry out welded fastening, just can guarantee the stability that utmost point post and adapter piece electricity are connected, avoid welding thermal radiation and welding slag to the influence of electric core, improve the stability and the security of cylinder battery.

Description

Cylindrical battery and electronic equipment

Technical Field

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

Background

Cylindrical batteries have become one of the important research directions of new energy power batteries because of their high energy density, high safety and low cost. The cylindrical battery comprises a shell, a battery cell, a pole and a cover plate, wherein the shell is of a cylindrical structure with one end being open, the shell comprises an end wall and a surrounding wall surrounding the periphery of the end wall, the battery cell is arranged in the shell, the cover plate is sealed at the open end of the shell, the pole is connected to the end wall of the shell in an insulating manner, and the pole is electrically connected with the pole lug of the battery cell through a switching piece.

In the prior art, the switching piece and the pole are electrically connected in a welding mode, and the welding process is generally as follows: penetrating the welding rod into the middle hole of the battery core, and then welding and fixing the switching sheet and the pole. However, heat radiation generated in the welding process of the adapter piece and the pole is easy to affect the battery cell, and in addition, the performance of the battery cell is also affected by metal scraps falling in the welding process.

Therefore, there is a need for a cylindrical battery to solve the above problems.

Disclosure of Invention

An object of the present utility model is to provide a cylindrical battery, which can realize the electrical connection between a pole and a switching piece without welding, and which is stable in electrical connection, and which improves the stability and safety of the cylindrical battery.

Another object of the present utility model is to provide an electronic device, which can improve the stability of the electronic device by applying the above-mentioned cylindrical battery.

In order to achieve the above object, the following technical scheme is provided:

in a first aspect, there is provided a cylindrical battery comprising:

a housing including an end wall and a surrounding wall surrounding a peripheral side of the end wall;

the pole comprises a limiting part and a connecting part, wherein the limiting part is positioned outside the end wall, the connecting part penetrates through the end wall and is positioned in the end wall, an accommodating groove is formed in the connecting part, and a clamping groove is formed in the groove side wall of the accommodating groove;

the switching piece comprises a first switching part, a second switching part and a clamping piece, wherein the first switching part is used for being electrically connected with the lug of the battery cell, the second switching part is connected with the first switching part, the clamping piece is elastically connected with the second switching part, the second switching part can extend into the accommodating groove, and the clamping piece can be clamped in the clamping groove.

As an alternative scheme of the cylindrical battery, the clamping piece comprises a clamping portion and an elastic portion, one end of the elastic portion is connected to the second switching portion, the other end of the elastic portion is connected to the clamping portion, and the clamping portion can be clamped in the clamping groove.

As an alternative to the cylindrical battery, the elastic portion is a spring, and the elastic portion is elastically stretchable in a radial direction of the second adapting portion.

As an alternative scheme of the cylindrical battery, a guiding groove extending along the radial direction of the second switching part is arranged in the second switching part, one end of the elastic part is connected to the bottom surface of the guiding groove, the other end of the elastic part is connected to the clamping part, and at least part of the clamping part can be accommodated in the guiding groove.

As an alternative of the cylindrical battery, the outer wall of the second adapter part is attached to the groove wall of the accommodating groove.

As an alternative scheme of the cylindrical battery, the clamping part is spherical, and the clamping groove is a spherical groove.

As an alternative scheme of the cylindrical battery, the elastic portion is an elastic arm, the clamping portion protrudes from the elastic portion in a direction away from the second adapting portion, and the clamping piece can elastically deform along a radial direction of the second adapting portion.

As an alternative scheme of the cylindrical battery, the clamping portion is provided with a first inclined surface, and the first inclined surface is inclined towards the central line direction of the pole along the direction away from the battery cell.

As an alternative of the cylindrical battery, a plurality of the clamping pieces are arranged at intervals along the circumferential direction of the second adapter part.

In a second aspect, there is provided an electronic device comprising a cylindrical battery as described above.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a cylindrical battery, which comprises a shell, a pole column and a switching piece, wherein the shell comprises an end wall and a surrounding wall surrounding the peripheral side of the end wall; the pole comprises a limiting part and a connecting part, the limiting part is positioned outside the end wall, the connecting part penetrates through the end wall and is positioned in the end wall, the connecting part is provided with a containing groove, and the groove side wall of the containing groove is provided with a clamping groove; the adapter piece includes first adapter portion, second adapter portion and joint spare, first adapter portion is connected with the utmost point ear electricity of electric core, second adapter portion connects in first adapter portion, joint spare elastic connection is in second adapter portion, second adapter portion can stretch into the holding tank, the joint spare can be blocked and locate in the draw-in groove, utmost point post and adapter piece not only have direct contact electricity and be connected, still through joint mechanical connection of joint spare and draw-in groove, need not to carry out welded fastening, just can guarantee the stability that utmost point post and adapter piece electricity are connected, avoid welding thermal radiation and the influence of welding slag to the electric core, improve cylindrical battery's stability and security.

According to the electronic equipment provided by the utility model, the stability of the electronic equipment can be improved by applying the cylindrical battery.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic cross-sectional view of a first cylindrical battery according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of the first pole and first adapter tab of FIG. 1 mated;

FIG. 3 is an exploded view of the first pole and first adapter plate of FIG. 1;

FIG. 4 is a schematic cross-sectional view of a second pole and a second adapter plate according to an embodiment of the present utility model;

fig. 5 is an exploded view of the second pole and the second switching tab of fig. 4.

Reference numerals:

1. a housing; 11. an end wall; 12. a surrounding wall;

2. a battery cell;

3. a pole; 31. a limit part; 32. a connection part; 321. a receiving groove; 322. a clamping groove; 3221. a second inclined surface;

4. a transfer sheet; 41. a first transfer section; 42. a second switching part; 43. a clamping piece; 431. an elastic part; 432. a clamping part; 4321. a first inclined surface;

5. a cover plate;

6. a first insulating member;

7. a second insulating member;

8. and a seal.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, the terms "upper," "lower," "left," "right," and the like are used for convenience of description and simplicity of operation based on the orientation or positional relationship shown in the drawings, and do not denote or imply that the apparatus or element in question must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

Fig. 1 shows a cross-sectional view of a first cylindrical battery provided by the present utility model. Fig. 2 shows a schematic cross-sectional view of the first pole 3 and the first adapter piece 4 of fig. 1 mated together. As shown in fig. 2 in combination with fig. 1, the cylindrical battery includes a case 1, a battery cell 2, a terminal 3, a tab 4, a cap plate 5, a first insulating member 6, a second insulating member 7, and a sealing member 8. The housing 1 includes an end wall 11 and a surrounding wall 12 surrounding the end wall 11; the pole 3 is arranged on the end wall 11 in a penetrating way and is in insulating connection with the shell 1; the battery cell 2 is arranged in the shell 1, and the tab of the battery cell 2 is electrically connected with the pole column 3 through the switching piece 4; the cover plate 5 is fixed to the end of the surrounding wall 12 away from the end wall 11 in cooperation with the sealing member 8, and sealing connection between the cover plate 5 and the surrounding wall 12 is achieved through the sealing member 8 so as to prevent electrolyte leakage. The pole 3 comprises a limiting part 31 and a connecting part 32, the limiting part 31 is positioned outside the end wall 11, and the first insulating piece 6 is positioned between the limiting part 31 and the outer surface of the end wall 11; the connection part 32 passes through the end wall 11, is positioned in the end wall 11 and is electrically connected with the adapter piece 4, the second insulating member 7 is arranged around the connection part 32 and is positioned between the adapter piece 4 and the inner surface of the end wall 11, and the insulating connection between the pole 3 and the end wall 11 of the shell 1 is realized through the first insulating member 6 and the second insulating member 7.

Fig. 3 shows an exploded view of the first pole 3 and the first adapter piece 4 of fig. 1. As shown in fig. 3 and fig. 2, the connecting portion 32 is provided with a receiving groove 321, and a clamping groove 322 is provided on a groove side wall of the receiving groove 321; the switching piece 4 includes a first switching portion 41, a second switching portion 42 and a clamping portion 432, the first switching portion 41 is electrically connected with the tab of the battery core 2, the second switching portion 42 is connected to the first switching portion 41, the clamping member 43 is elastically connected to the second switching portion 42, the second switching portion 42 can extend into the accommodating groove 321, and the clamping member 43 can be clamped in the clamping groove 322, so that the second switching portion 42 is electrically connected with the connecting portion 32. So set up, pole 3 not only has direct contact electricity with change piece 4 and is connected, still through joint mechanical connection of joint piece 43 and draw-in groove 322, need not to carry out welded fastening, just can guarantee the stability that pole 3 and change piece 4 electricity are connected, avoid welding heat radiation and the influence of welding slag to electric core 2, improve the stability and the security of cylinder battery.

As further shown in fig. 3 and fig. 2, the locking member 43 includes a locking portion 432 and an elastic portion 431, one end of the elastic portion 431 is connected to the second adapting portion 42, the other end of the elastic portion 431 is connected to the locking portion 432, and the locking portion 432 can be locked in the locking groove 322. The engagement portion 432 can be moved relative to the second adapter portion 42 of the adapter piece 4 by elastic deformation of the elastic portion 431. The assembling process of the switching piece 4 and the pole 3 comprises the following steps: the second switching part 42 of the switching piece 4 is inserted into the accommodating groove 321 of the pole 3, the clamping part 432 can be made to extrude the elastic part 431 under the abutting action of the groove wall of the accommodating groove 321, finally the clamping piece 43 integrally enters the accommodating groove 321, when the clamping piece 43 is opposite to the clamping groove 322 in the accommodating groove 321, the clamping part 432 is clamped into the clamping groove 322 under the elastic action of the elastic part 431, the clamping fit of the switching piece 4 and the pole 3 is realized, and the stability of the electric connection of the switching piece 4 and the pole 3 is ensured.

Preferably, the outer wall of the second adapting part 42 is attached to the groove wall of the accommodating groove 321, so that the second adapting part 42 and the inner wall of the accommodating groove 321 are fully contacted, and the electric connection between the two parts is ensured.

The elastic portion 431 is a spring, and the elastic portion 431 can elastically expand and contract along the radial direction of the second adapting portion 42, so that the engaging portion 432 can elastically move along the radial direction of the second adapting portion 42. Further, a guiding groove extending along the radial direction of the second adapting portion 42 is provided in the second adapting portion 42, one end of the elastic portion 431 is connected to the bottom surface of the guiding groove, the other end of the elastic portion is connected to the locking portion 432, and at least part of the locking portion 432 can be accommodated in the guiding groove. The second switching part 42 of the switching piece 4 can smoothly enter the accommodating groove 321, and meanwhile, the clamping part 432 of the clamping piece 43 can be clamped into the clamping groove 322, so that the switching piece 4 is connected with the pole 3 in a clamping way. In other embodiments, the elastic portion 431 may be made of other elastic materials, which are not illustrated herein.

In fig. 3, the engaging portion 432 is spherical, and the engaging groove 322 is a spherical groove. In the assembly process of the switching piece 4 and the pole 3, the second switching part 42 of the switching piece 4 can smoothly enter the accommodating groove 321, then when the clamping part 432 moves to a position opposite to the clamping groove 322, the clamping part 432 enters the clamping groove 322 under the action of the elastic part 431, so that the switching piece 4 and the pole 3 are clamped and fixed, and the stability of electric connection between the switching piece 4 and the pole 3 is ensured. Of course, in other embodiments, the engaging portion 432 may have other shapes, and the engaging groove 322 may have other shapes, so long as the engaging portion and the engaging portion can be engaged and fixed, which is not limited herein.

Preferably, the plurality of clamping members 43 are arranged at intervals along the circumferential direction of the second adapting portion 42, so as to improve the connection strength between the adapting piece 4 and the pole 3 and ensure the electrical connection stability between the adapting piece and the pole 3.

Fig. 4 shows a schematic cross-sectional view of the second pole 3 and the second adapter piece 4 according to the present utility model. Fig. 5 shows an exploded view of the pole 3 and the adapter piece 4 of fig. 4. As shown in fig. 4 to 5, the elastic portion 431 is an elastic arm, and the engaging portion 432 protrudes from the elastic portion 431 in a direction away from the second adapting portion 42, so that the engaging member 43 can elastically deform in a radial direction of the second adapting portion 42. Specifically, when the adapter piece 4 is not acted by an external force, the clamping portion 432 protrudes from the elastic portion 431, when the second adapter portion 42 of the adapter piece 4 is inserted into the accommodating groove 321 of the pole 3, the clamping portion 432 can transmit force to the elastic portion 431 under the action of an abutting force of the inner side wall of the accommodating groove 321, the elastic portion 431 elastically deforms toward the inner side direction of the second adapter portion 42, so that the clamping portion 432 can enter the accommodating groove 321, and when the clamping portion 432 moves to a position opposite to the clamping groove 322, the clamping portion 432 is clamped into the clamping groove 322 under the action of the elastic portion 431, so that the clamping connection between the adapter piece 4 and the pole 3 is realized. In this example, realize the elasticity removal of joint portion 432 through the elastic arm, and then realize that joint portion 432 is fixed with the joint of draw-in groove 322, and utmost point post 3 and change piece 4 not only have direct contact electricity and be connected, still through joint mechanical connection of joint portion 432 and draw-in groove 322, need not to carry out welded fastening, just can guarantee the stability that utmost point post 3 and change piece 4 electricity are connected, avoid welding thermal radiation and the influence of welding slag to electric core 2, improve the stability and the security of cylindrical battery.

Preferably, the clamping portion 432 is provided with a first inclined surface 4321, and the first inclined surface 4321 is inclined toward the center line of the pole 3 in a direction away from the battery cell 2. When the second adapter part 42 is inserted into the accommodating groove 321, the connecting part 32 of the pole 3 is firstly abutted against the first inclined surface 4321 of the clamping part 432, at this time, along with the movement of the second adapter part 42 into the accommodating groove 321, the acting force of the connecting part 32 of the pole 3 on the first inclined surface 4321 can be decomposed into a downward force and a force towards the center of the second adapter part 42 under the action of the first inclined surface 4321, so that the clamping part 432 is pressed to move towards the center of the second adapter part 42, and finally the clamping part 432 enters the accommodating groove 321 and moves to the position of the clamping groove 322, thereby realizing the clamping and fixing with the clamping groove 322.

Further, the clamping groove 322 is provided with a second inclined surface 3221 matched with the first inclined surface 4321, so that the clamping portion 432 is ensured to be fully contacted with the inner wall of the clamping groove 322, the clamping force between the clamping portion 432 and the clamping groove can be improved, the contact area between the clamping portion and the clamping groove can be increased, and the stability of electric connection is ensured.

The utility model also provides electronic equipment comprising the cylindrical battery. The electronic equipment is high in energy density and stable in performance by applying the cylindrical battery, and user experience can be improved.

Alternatively, the electronic device may be a power battery of a new energy power automobile, a new energy storage device, an electronic product, etc., which are not illustrated herein.

Note that in the description of this specification, a description referring to terms "some embodiments", "other embodiments", and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing description is only of the preferred embodiments of the utility model and the technical principles employed. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims

1. A cylindrical battery, comprising:

the switching piece comprises a first switching part, a second switching part and a clamping piece, wherein the first switching part is used for being electrically connected with a lug of the battery cell, the second switching part is connected with the first switching part, the clamping piece is elastically connected with the second switching part, the second switching part can extend into the accommodating groove, and the clamping piece can be clamped in the clamping groove.

2. The cylindrical battery according to claim 1, wherein the clamping member comprises a clamping portion and an elastic portion, one end of the elastic portion is connected to the second adapting portion, the other end of the elastic portion is connected to the clamping portion, and the clamping portion can be clamped in the clamping groove.

3. The cylindrical battery according to claim 2, wherein the elastic portion is a spring, and the elastic portion is elastically stretchable in a radial direction of the second switching portion.

4. The cylindrical battery according to claim 3, wherein a guide groove extending in a radial direction of the second switching part is provided in the second switching part, one end of the elastic part is connected to a bottom surface of the guide groove, the other end of the elastic part is connected to the clamping part, and at least part of the clamping part can be accommodated in the guide groove.

5. The cylindrical battery according to claim 4, wherein an outer wall of the second adapter portion is fitted to a wall of the accommodating groove.

6. The cylindrical battery according to claim 5, wherein the engaging portion is spherical, and the engaging groove is a spherical groove.

7. The cylindrical battery according to claim 2, wherein the elastic portion is an elastic arm, the clamping portion protrudes from the elastic portion in a direction away from the second adapting portion, and the clamping member is elastically deformable in a radial direction of the second adapting portion.

8. The cylindrical battery according to claim 7, wherein the clamping portion is provided with a first inclined surface, and the first inclined surface is inclined toward the center line of the pole in a direction away from the battery cell.

9. The cylindrical battery of any one of claims 1-8, wherein a plurality of the snap-in members are disposed at intervals along the circumference of the second adapter.

10. An electronic device comprising a cylindrical battery as claimed in any one of claims 1-9.