CN218677340U - Cover plate assembly and battery - Google Patents

Abstract

The utility model discloses a cover plate component and a battery, which comprises a cover plate, a pole and a first connecting piece; the cover plate is provided with a first surface and a second surface which are arranged in a back-to-back mode, and the cover plate is provided with a mounting hole. The flange structure and the cover plate are bonded through the first connecting piece, so that the assembling is fast and the operation is convenient. In addition, with first connecting piece setting between flange structure and apron, can increase the area of being connected between utmost point post and the apron in the footpath of mounting hole to can effectively promote the stability of utmost point post. The cover plate can be arranged in the axial direction of the mounting hole and the contact area of the pole column, and the thickness of the cover plate can be reduced. Therefore, on the premise that the thickness of the battery is constant, the accommodating space can be enlarged by the aid of the accommodating hole in the axial direction, so that a battery core with a large mounting height can be mounted in the accommodating space, and the energy density of the battery is effectively improved.

Description

Cover plate assembly and battery

Technical Field

The utility model belongs to the technical field of the battery, a apron subassembly and battery are related to.

Background

The conventional button cell generally includes a cover plate assembly, a casing, and a battery cell, wherein the cover plate assembly and the casing are connected to form a receiving space, and the battery cell is installed in the receiving space. The positive pole of electric core and apron subassembly electric connection, the negative pole of electric core and casing electric connection.

Wherein, the apron subassembly includes that apron and utmost point post, apron and utmost point post are the metal material, and the apron is connected with the casing, is equipped with the mounting hole on the apron, and utmost point post wears to establish in the mounting hole, and the lateral wall of utmost point post passes through the insulating part with the pore wall of mounting hole and bonds together to it is insulating between messenger's utmost point post and the apron. In addition, the lower end of the pole column extends into the accommodating space and is electrically connected with the positive electrode of the battery cell, and the upper end of the pole column extends out of the mounting hole.

In order to stabilize the pole, the thickness of the cover plate is usually set to be large to increase the connection area between the pole and the hole wall of the mounting hole. However, on the premise that the thickness of the battery is constant, the height of the accommodating space is reduced by increasing the thickness of the cover plate, so that only the battery cell with a lower height can be mounted in the accommodating space, and the energy density of the battery is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the cover plate assembly and the battery are provided for solving the problem that the thickness of the cover plate is generally large in order to stabilize the pole, and further the energy density of the battery is reduced.

In order to achieve the above object, the utility model provides a following technical scheme: a cover plate assembly is characterized by comprising a cover plate, a pole and a first connecting piece; the cover plate is provided with a first surface and a second surface which are arranged oppositely, the cover plate is provided with a mounting hole, and the mounting hole penetrates from the first surface to the second surface; the pole comprises a column body and a flange structure, and the flange structure is arranged on the side wall of the column body; the column body penetrates through the mounting hole; the first connecting piece is respectively bonded with the flange structure and the cover plate, and is arranged between the flange structure and the cover plate along the direction from the first surface to the second surface.

Optionally, the cover plate is a conductive plate, and the first connecting piece is an insulating connecting piece.

Optionally, the mounting hole is a stepped hole, and along a direction from the first surface to the second surface, the mounting hole includes a first hole and a second hole that are sequentially arranged and communicated, wherein a hole diameter of the first hole is smaller than a hole diameter of the second hole; the flange structure is located within the second aperture.

Optionally, the cover plate assembly further includes a second connecting member, the second connecting member is respectively bonded to the flange structure and the cover plate, and the second connecting member is located between a sidewall of the second hole and a sidewall of the flange structure; the cover plate is a conductive plate, and the second connecting piece is an insulating connecting piece.

Optionally, the cover plate assembly further includes a third connecting member, the third connecting member is bonded to the cylinder and the cover plate, and the third connecting member is located between the side wall of the mounting hole and the side wall of the cylinder.

Optionally, the cover plate assembly further includes a fourth connecting member, and the fourth connecting member is respectively bonded to the cylinder and the cover plate; the fourth connecting piece, the cover plate and the first connecting piece are sequentially overlapped along the direction from the first surface to the second surface; the apron is the current conducting plate, the third connecting piece with the fourth connecting piece is insulating connecting piece.

Optionally, the cover plate assembly further includes a third connecting member and a fourth connecting member, and the fourth connecting member and the first connecting member are respectively connected to two ends of the third connecting member.

Optionally, the first connecting piece, the third connecting piece and the fourth connecting piece are all of an annular structure, and the first connecting piece, the third connecting piece and the fourth connecting piece are all sleeved and bonded on the outer side of the column body.

Optionally, the end of the column away from the flange structure protrudes from the fourth connector; and/or the first connecting piece, the third connecting piece and the fourth connecting piece are of an integral structure.

Optionally, the third connecting member includes a first glue overflow portion and a second glue overflow portion connected to each other, and the first glue overflow portion and the first connecting member have an integrally formed structure.

Optionally, the first connecting piece is a PP adhesive connecting piece, and the fourth connecting piece is a PP adhesive connecting piece or an epoxy resin connecting piece; the second glue overflowing part and the fourth connecting piece are of an integrally formed structure, and the first glue overflowing part and the second glue overflowing part are at least partially bonded; and/or the fourth connecting piece, the first glue overflowing part and the second glue overflowing part are integrally formed, and the fourth connecting piece and the second glue overflowing part are at least partially bonded.

Optionally, the third connecting piece includes a first glue overflow portion and a second glue overflow portion connected to each other, and the first glue overflow portion and the first connecting piece have an integrally formed structure; the first glue overflowing part and the second glue overflowing part are at least partially bonded, and/or the second glue overflowing part is an epoxy glue overflowing part.

Optionally, a first metal connecting sheet and/or a second metal sheet are welded on the pole respectively, the first metal connecting sheet is located on one side of the flange structure of the pole, the second metal sheet is located on one side of the flange structure of the pole, and the first metal connecting sheet and/or the pole of the second metal sheet are welded on the other side of the flange structure of the pole through the first connecting piece and the cover plate in an insulating connection mode.

In order to solve the above technical problem, an embodiment of the present invention further provides a battery, including a casing, a battery cell, and the cover plate assembly described in any one of the above; the cover plate assembly is connected with the shell to form an accommodating space in an enclosing mode; the battery cell is installed in the accommodating space, one of the positive pole and the negative pole of the battery cell is electrically connected with the column, and the other of the positive pole and the negative pole of the battery cell is electrically connected with the shell.

Optionally, the battery further has at least one of the following settings:

a. the flange structure is located inside or outside the accommodating space.

b. The cover plate is welded with the shell;

c. the cover plate is provided with a clamping groove at the edge, and the edge of the shell is welded with the groove wall of the clamping groove;

d. the card slot has a gamma-shaped section or a reverse-shaped section;

e. the battery also comprises a battery cell which is a laminated battery cell or a winding battery cell, the battery cell is provided with a first electrode lug and a second electrode lug which are opposite, the first electrode lug is electrically connected with the pole, and the second electrode lug is electrically connected with the shell or the cover plate;

f. the battery is a button battery, the battery cell is provided with a first end face and a second end face which are opposite in the height direction of the battery, and a first insulating piece is arranged between the second end face of the battery cell and the bottom wall of the shell; and a second insulating sheet is arranged between the first end surface of the battery cell and the cover plate.

The embodiment of the utility model provides an among the apron subassembly and the battery, bond flange structure and apron through first connecting piece, set up the equipment like this and fast and convenient operation. In addition, with first connecting piece setting between flange structure and apron, can increase the area of being connected between utmost point post and the apron in the footpath of mounting hole to can effectively promote the stability of utmost point post. The cover plate can be arranged in the axial direction of the mounting hole and the contact area of the pole column are reduced on the premise that the connection strength of the cover plate and the pole column is guaranteed, and the thickness of the cover plate can be reduced. Therefore, on the premise that the thickness of the battery is constant, the accommodating space can be enlarged by the aid of the accommodating hole in the axial direction, so that a battery core with a large mounting height can be mounted in the accommodating space, and the energy density of the battery is effectively improved.

Drawings

Fig. 1 is a schematic structural diagram of a battery section according to an embodiment of the present invention;

FIG. 2 is a partially enlarged schematic view of region A of FIG. 1;

fig. 3 is a schematic structural diagram of a cover plate assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a housing according to an embodiment of the present invention.

The reference numerals in the specification are as follows:

1. a housing;

2. an electric core;

3. a cover plate assembly; 31. a cover plate; 32. a pole column; 321. a cylinder; 322. a flange structure; 33. a first connecting member; 34. a second connecting member; 35. a third connecting member; 36. a fourth connecting member;

4. an accommodating space;

5. mounting holes; 51. a first hole; 52. a second aperture.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a battery 100, which includes a casing 1, a battery cell 2, and a cover plate assembly 3; the cover plate component 3 is connected with the shell 1 to form an accommodating space 4;

as shown in fig. 3, in an embodiment, the cover plate assembly 3 includes a cover plate 31, a pole 32 and a first connecting member 33; the pole is made of metal, the cover plate 31 has a first surface 311 and a second surface 312 which are opposite to each other, the cover plate 31 is provided with a mounting hole 5, and the mounting hole 5 penetrates from the first surface 311 to the second surface 312; the pole 32 comprises a cylinder 321 and a flange structure 322, wherein the flange structure 322 is arranged on the side wall of the cylinder 321; the column 321 is arranged in the mounting hole 5; the first connecting member 33 is bonded to the flange structure 322 and the cover plate 31, respectively, and the first connecting member 33 is disposed between the flange structure 322 and the cover plate 31 in the direction from the first surface 311 to the second surface 312, in which case the flange structure 322 may be disposed outside the battery or in the accommodating space 4.

The flange structure 322 and the cover plate 31 are bonded by the first connecting member, so that the assembly is fast and the operation is convenient. In addition, by disposing the first connecting member 33 between the flange structure 322 and the cover plate 31, the connecting area between the pole 32 and the cover plate 31 can be increased in the radial direction of the mounting hole 5, so that the stability of the pole 32 can be effectively improved. The setting can reduce the area of contact of apron 31 with utmost point post 32 in the axial of mounting hole 5 under the prerequisite of guaranteeing apron 31 and utmost point post 32 joint strength like this, and then can reduce the thickness of apron 31. Therefore, on the premise that the thickness of the battery 100 is constant, the accommodating space 4 can be increased by the arrangement of the embodiment along the axial dimension of the mounting hole 5, so that the battery core 2 with a large height can be mounted in the accommodating space 4, and the energy density of the battery 100 is effectively improved.

In addition, the battery cell 2 is installed in the accommodating space 4, one of the positive electrode and the negative electrode of the battery cell 2 is electrically connected to the column 321, and the other of the positive electrode and the negative electrode of the battery cell 2 is electrically connected to the casing 1.

As shown in fig. 2 and 3, in one embodiment, the cover plate 31 is a conductive plate, and the first connecting member 33 is an insulating connecting member. The cover plate may be made of metal, and the first connecting member 33 may be disposed to insulate the pole 32 from the cover plate 31. Of course, the cover plate 31 may be a non-conductive plate, and the bonding arrangement of the first connecting member 33 may increase the connection stability between the post 32 and the cover plate 31.

As shown in fig. 2 and 3, in an embodiment, when the flange structure 322 is located in the accommodating space 4, the flange structure 322 may also interfere with the second surface 312 of the cover plate 31, so as to prevent the pole 32 from being drawn out of the mounting hole 5, and thus, the pole 32 may be more firmly mounted.

As shown in fig. 1 and 4, in an embodiment, the mounting hole 5 is a stepped hole, and along a direction from the first surface 311 to the second surface 312, the mounting hole 5 includes a first hole 51 and a second hole 52 which are sequentially arranged and communicated, wherein a diameter of the first hole 51 is smaller than a diameter of the second hole 52; the flange structure 322 is located in the second hole 52 to reduce the thickness of the cover plate assembly 3, which is the axial dimension of the mounting hole 5, so that a battery cell 2 with a larger height can be mounted in the accommodating space 4, thereby further effectively increasing the energy density of the battery 100. In actual production, the flange structure 322 is located completely within the second hole 52 and does not protrude from the second surface 312 of the cover plate 31, so that the thickness of the cover plate assembly 3 is lower.

As shown in fig. 1 and 3, in an embodiment, the cover plate assembly 3 further includes a second connector 34, the second connector 34 is adhered to the flange structure 322 and the cover plate 31, respectively, and the second connector 34 is disposed between a sidewall of the second hole 52 and a sidewall of the flange structure 322. The connection strength between the cover plate 31 and the flange structure 322 can be improved by the arrangement of the second connecting member 34. When the cover plate 31 is a conductive plate, the second connecting member 34 is an insulating connecting member to prevent the cover plate 31 and the flange structure 322 from conducting electricity.

As shown in fig. 3 and 4, in an embodiment, the cover plate assembly 3 further includes a third connecting member 35, the third connecting member 35 is adhered to the cylinder 321 and the cover plate 31, and the third connecting member 35 is located between the sidewall of the mounting hole 5 and the sidewall of the cylinder 321. The connection strength between the cover plate 31 and the column 321 can be improved by the third connecting member 35. When the cap plate 31 is a conductive plate, the third connecting member 35 is an insulating connecting member to prevent the cap plate 31 and the pillar 321 from conducting electricity.

In other embodiments, as shown in fig. 3 and 4, when the mounting hole 5 is a stepped hole, the third connecting member 35 is located between the sidewall of the first hole 51 and the sidewall of the column 321.

As shown in fig. 3 and 4, in an embodiment, the cover plate assembly 3 further includes a fourth connecting member 36, and the fourth connecting member 36 is adhered to the cylinder 321 and the cover plate 31 respectively; the fourth connecting member 36, the cover plate 31, and the first connecting member 33 are sequentially stacked in a direction from the first surface 311 to the second surface 312. The connection strength between the cover plate 31 and the column 321 can be improved by the fourth connecting member 36. When the cap plate 31 is a conductive plate, the fourth connecting member 36 is an insulating connecting member to prevent the cap plate 31 and the pillar 321 from conducting electricity.

As shown in fig. 3 and 4, in an embodiment, the cover plate assembly 3 includes a third connecting member 35 and a fourth connecting member 36, and the fourth connecting member 36 and the first connecting member 33 are respectively connected to two ends of the third connecting member 35. Enclose through first connecting piece 33, third connecting piece 35 and fourth connecting piece 36 three and close and form a recess, the recess can be arranged in to apron 31 to can promote the fastness between the apron subassembly 3, in addition, fourth connecting piece 36 can be the same also can be different with first connecting piece 33 material.

As shown in fig. 3 and 4, in an embodiment, the first connecting member 33, the third connecting member 35, and the fourth connecting member 36 are all annular structures, and the first connecting member 33, the third connecting member 35, and the fourth connecting member 36 are all sleeved and adhered to the outer side of the cylinder 321. The second connecting member 34 is also a ring structure, and the ring structure is disposed outside the flange structure 322. All can support all around in the mounting hole 5 like this setting to it all can be contradicted by it to be located the region in mounting hole 5. In other embodiments, when the mounting hole 5 is a stepped hole, the first hole 51 may be supported all around, and all areas within the first hole 51 may be interfered with.

As shown in fig. 1 and 3, in an embodiment, an end of the cylinder 321 away from the flange structure 322 protrudes from the fourth connector 36, and/or the first connector 33, the third connector 35, and the fourth connector 36 are a unitary structure (which is defined as a connecting structure). In order to increase the power output of the battery 100, the end of the cylinder 321 needs to be welded. When the protruding end of the column 321 is welded, the influence on the connecting structure can be reduced, and the connecting performance of the connecting structure can be effectively improved. In addition, the convenience in assembling can be improved by arranging the connecting structure, and the preparation efficiency of the connecting structure can be improved. When the cover plate assembly 3 further includes the second connecting member 34, the first connecting member 33, the second connecting member 34, the third connecting member 35 and the fourth connecting member 36 are of an integral structure. When the cap plate 31 is a conductive plate, the connection structure is an insulating connection structure.

In an implementation manner of an embodiment, the third connecting member 35 includes a first glue overflow portion and a second glue overflow portion connected to each other, and the first glue overflow portion and the first connecting member 33 have an integrally formed structure. At this time, since the first glue overflowing portion and the first connecting member 33 are integrally formed, the stability of the connection between the first connecting member 33 and the third connecting member 35 can be increased.

In an implementation realizable embodiment of an embodiment, the first connector 33 is a PP glue connector, and the fourth connector 36 is a PP glue connector or an epoxy glue connector; the second glue overflow part and the fourth connecting piece 36 are of an integrally formed structure, and the first glue overflow part and the second glue overflow part are at least partially bonded; and/or the fourth connecting piece 36, the first glue overflowing part and the second glue overflowing part are integrally formed, and the fourth connecting piece 36 and the second glue overflowing part are at least partially bonded. Wherein, the material that first glue portion and the second glue portion of overflowing can be the same also can be different, in addition, glue bonding setting of connecting piece through the PP and can play the effect of strengthening the joint strength between apron 31 and the utmost point post 32.

In an implementation manner of an embodiment, the third connecting member 35 includes a first glue overflow portion and a second glue overflow portion connected to each other, and the first glue overflow portion and the first connecting member 33 have an integrally formed structure; the first glue overflowing part and the second glue overflowing part are at least partially bonded, and/or the second glue overflowing part is an epoxy glue overflowing part. Wherein, epoxy glue overflows gluey portion and can adopt epoxy to glue to play waterproof effect when strengthening the joint strength between apron 31 and the utmost point post 32.

In the in-service use process, at first connect utmost point post 32 and apron 31, secondly, to the first metal connection piece of utmost point post 32 welding on the apron 31, when setting up the utmost point ear that can lead to welding utmost point post 32 like this, the high temperature of production can exert an influence to connection structure, and then influences the joint strength between utmost point post 32 and the apron 31 easily. To solve this problem, in an implementation manner of an embodiment, the pole 31 is welded with a first metal connecting sheet and/or a second metal sheet, the second metal sheet is located on one side of the pole 32 on the flange structure 322, the second metal sheet is located on one side of the pole 32 away from the flange structure 322, and the pole 32 welded with the first metal connecting sheet and/or the second metal sheet is connected with the cover plate 31 in an insulating manner through the first connecting member 33. In this way, before the pole post 32 is connected with the cover plate 31, the first metal connecting piece and/or the second metal piece are welded on the pole post 32, so that the connection strength between the pole post 32 and the cover plate 31 can be prevented from being influenced.

In an implementable implementation of an embodiment, the battery further has at least one of the following settings:

a. the flange structure 322 is located inside the receiving space 4 or outside the receiving space 4.

b. The cover plate 31 is welded with the shell 1;

c. the cover plate 31 is provided with a clamping groove at the edge, and the edge of the shell 1 is welded with the groove wall of the clamping groove;

d. the card slot has a gamma-shaped section or a reverse-shaped section;

e. the battery 100 further includes a battery cell 2, where the battery cell 2 is a laminated battery cell or a wound battery cell, the battery cell 2 has a first tab and a second tab opposite to each other, the first tab is electrically connected to the terminal post 32, and the second tab is electrically connected to the casing 1 or the cover plate 31;

f. the battery 100 is a button battery, the battery cell 2 has a first end face and a second end face opposite to each other in the height direction of the battery, and a first insulating sheet is arranged between the second end face of the battery cell 2 and the bottom wall of the casing 1; a second insulating sheet is arranged between the first end surface of the battery cell 2 and the cover plate 31.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (15)

1. A cover plate assembly is characterized by comprising a cover plate, a pole and a first connecting piece;

the cover plate is provided with a first surface and a second surface which are arranged oppositely, the cover plate is provided with a mounting hole, and the mounting hole penetrates from the first surface to the second surface;

the pole comprises a column body and a flange structure, and the flange structure is arranged on the side wall of the column body;

the column body penetrates through the mounting hole;

the first connecting piece is respectively bonded with the flange structure and the cover plate, and is arranged between the flange structure and the cover plate along the direction from the first surface to the second surface.

2. The cover plate assembly of claim 1, wherein the cover plate is a conductive plate and the first connector is an insulating connector.

3. The cover plate assembly according to claim 1, wherein the mounting hole is a stepped hole, and the mounting hole includes a first hole and a second hole sequentially arranged and communicated in a direction from the first surface to the second surface, wherein a diameter of the first hole is smaller than a diameter of the second hole;

the flange structure is located within the second aperture.

4. The lid assembly of claim 3, further comprising a second connector bonded to the flange structure and the lid plate, respectively, and positioned between a sidewall of the second aperture and a sidewall of the flange structure;

the cover plate is a conductive plate, and the second connecting piece is an insulating connecting piece.

5. The cover assembly of claim 2, further comprising a third connector bonded to the post and the cover plate, respectively, and positioned between the sidewalls of the mounting hole and the posts.

6. The cover plate assembly of claim 5, further comprising a fourth connector bonded to the post and the cover plate, respectively;

the fourth connecting piece, the cover plate and the first connecting piece are sequentially overlapped along the direction from the first surface to the second surface;

the apron is the current conducting plate, the third connecting piece with the fourth connecting piece is insulating connecting piece.

7. The cover assembly as claimed in claim 6, wherein the cover assembly includes both the third connecting member and the fourth connecting member, and the fourth connecting member and the first connecting member are connected to both ends of the third connecting member, respectively.

8. The cover plate assembly of claim 7, wherein the first connecting member, the third connecting member and the fourth connecting member are all ring structures, and the first connecting member, the third connecting member and the fourth connecting member are all sleeved and adhered to the outer side of the column.

9. The decking assembly defined in claim 6 wherein the ends of the posts remote from the flange structures project above the fourth connectors;

and/or the first connecting piece, the third connecting piece and the fourth connecting piece are of an integrated structure.

10. The decking assembly defined in claim 6 wherein the third connector includes first and second glue overflow sections connected together, the first and second glue overflow sections having an integrally formed construction.

11. The cover plate assembly of claim 10, wherein the first connector is a PP adhesive connector, and the fourth connector is a PP adhesive connector or an epoxy connector;

the second glue overflowing part and the fourth connecting piece are of an integrally formed structure, and the first glue overflowing part and the second glue overflowing part are at least partially bonded; and/or the fourth connecting piece, the first glue overflowing part and the second glue overflowing part are integrally formed, and the fourth connecting piece and the second glue overflowing part are at least partially bonded.

12. The cover plate assembly of claim 5, wherein the third connecting member includes a first glue overflow portion and a second glue overflow portion connected to each other, the first glue overflow portion and the first connecting member having an integrally formed structure;

the first glue overflowing part and the second glue overflowing part are at least partially bonded, and/or the second glue overflowing part is an epoxy glue overflowing part.

13. The cover plate assembly according to claim 1, wherein the pole is welded with a first metal connecting sheet and/or a second metal sheet, the first metal connecting sheet is located on one side of the flange structure of the pole, the second metal sheet is located on one side of the flange structure of the pole, and the pole welded with the first metal connecting sheet and/or the second metal sheet is in insulation connection with the cover plate through the first connecting piece.

14. A battery comprising a housing, a cell, and the cover assembly of any one of claims 1-13;

the cover plate assembly is connected with the shell to form an accommodating space in an enclosing mode;

the battery cell is installed in the accommodating space, one of the positive pole and the negative pole of the battery cell is electrically connected with the column, and the other of the positive pole and the negative pole of the battery cell is electrically connected with the shell.

15. A battery according to claim 14, characterized in that the battery also has at least one of the following settings:

a. the flange structure is positioned in the accommodating space or outside the accommodating space;

b. the cover plate is welded with the shell;

c. the cover plate is provided with a clamping groove at the edge, and the edge of the shell is welded with the groove wall of the clamping groove;

d. the card slot has a gamma-shaped section or a reverse-shaped section;

e. the battery also comprises a battery cell which is a laminated battery cell or a winding battery cell, the battery cell is provided with a first electrode lug and a second electrode lug which are opposite, the first electrode lug is electrically connected with the pole, and the second electrode lug is electrically connected with the shell or the cover plate;

f. the battery is a button battery, the battery cell is provided with a first end face and a second end face which are opposite in the height direction of the battery, and a first insulating piece is arranged between the second end face of the battery cell and the bottom wall of the shell; and a second insulating sheet is arranged between the first end surface of the battery cell and the cover plate.

Images