CN216928725U - Battery core subassembly and button cell - Google Patents
Battery core subassembly and button cell Download PDFInfo
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- CN216928725U CN216928725U CN202123087118.7U CN202123087118U CN216928725U CN 216928725 U CN216928725 U CN 216928725U CN 202123087118 U CN202123087118 U CN 202123087118U CN 216928725 U CN216928725 U CN 216928725U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses an electric core component and a button battery, which comprise a first pole piece, a second pole piece and an isolating piece, wherein the isolating piece is positioned between the first pole piece and the second pole piece, and the first pole piece, the second pole piece and the isolating piece are wound to form a roll core structure; the first pole piece is equipped with the first mass flow body, and the first mass flow body extends the setting and sets up along with the first pole piece is convoluteed along the border of first pole piece, and the second pole piece is equipped with the second mass flow body, and one in the first mass flow body and the second mass flow body is used for and first casing electric connection, and another in the first mass flow body and the second mass flow body is used for and second casing electric connection. The separator is used for avoiding short circuit of the first pole piece and the second pole piece, and the first current collector is arranged along the edge of the first pole piece in an extending mode so that the first current collector forms a continuously extending current collector, the overcurrent part of the current collector is enlarged, and the overcurrent capacity is improved; compared with the traditional connection mode of the single-pole lug, the current-conducting capacity of the battery core assembly is improved, and the performance of the battery is favorably exerted.
Description
Technical Field
The utility model relates to the technical field of button batteries, in particular to an electric core assembly and a button battery.
Background
Button cells, also commonly referred to as Button cells, refer to a type of battery that resembles a Button in shape. The diameter of a button cell is usually relatively larger, and the thickness is relatively thinner, and the button cell comprises a shell and a battery core assembly arranged in the shell.
An electric current needs to pass between the electric core assembly and the shell. However, the overcurrent capacity of the traditional battery core assembly is poor, and the performance of the battery is restricted.
SUMMERY OF THE UTILITY MODEL
Based on this, there is a need to provide a cell assembly and a button cell; the current-conducting capacity of the battery core assembly is better, so that the performance of a battery can be exerted; the button cell comprises the electric core assembly, and the current-conducting capacity of the electric core assembly is better.
The technical scheme is as follows:
one embodiment provides a battery pack assembly comprising:
the device comprises a first pole piece, a second pole piece and a spacer, wherein the spacer is positioned between the first pole piece and the second pole piece, and the first pole piece, the second pole piece and the spacer are wound to form a roll core structure;
the first pole piece is equipped with the first mass flow body, the first mass flow body is followed the border of first pole piece extends the setting and follows the first pole piece is convoluteed and is set up, the second pole piece is equipped with the second mass flow body, the first mass flow body with one in the second mass flow body is used for with first casing electric connection, the first mass flow body with another in the second mass flow body is used for with second casing electric connection.
In the electrode assembly, the separator is used for avoiding short circuit of the first pole piece and the second pole piece, and the first current collector is arranged along the edge of the first pole piece in an extending manner, so that the first current collector forms a continuously extending current collector, the overcurrent part of the current collector is increased, and the overcurrent capacity is improved; compared with the traditional connection mode of the single-pole lug, the current-conducting capacity of the battery core assembly is improved, and the performance of the battery is favorably exerted.
The technical solution is further explained below:
in one embodiment, the second current collector is disposed along an edge of the second pole piece in an extending manner and is disposed along with the second pole piece in a winding manner, and the second current collector and the first current collector are respectively located on two opposite sides of the jelly roll structure.
In one of them embodiment, the electric core subassembly still includes first current collector piece and second current collector piece, first current collector with first current collector piece electric connection, second current collector with second current collector piece electric connection, first current collector piece with one in the second current collector piece with first casing electric connection, first current collector piece with another in the second current collector piece with second casing electric connection.
In one embodiment, the first current collector sheet is located between the first current collector and the first shell, and one end of the first current collector facing the first current collector sheet is processed by kneading to form a first kneading surface;
the second current collector piece is located the second current collector with between the second casing, the orientation of second current collector the one end of second current collector piece is handled through rubbing the flat and is formed the second and rub the face.
In one embodiment, the first current collecting piece and the second current collecting piece are both current collecting pads, one surface of the first current collecting piece is welded with the first shell, and the first current collector is welded with the other surface of the first current collecting piece through the first kneading surface; one side of the second current collecting piece is welded with the second shell, and the second current collecting piece is welded with the other side of the second current collecting piece through the second dough kneading.
In one embodiment, when the axial direction of the roll core structure is projected, the outer contour of the first current collector is located within the outer contour of the first current collector piece, and the outer contour of the second current collector is located within the outer contour of the second current collector piece.
In one embodiment, the first pole piece and the second pole piece are both cut by a suspended knife.
In one embodiment, the first pole piece is a positive pole piece, and the first pole piece is obtained by cutting an aluminum foil; the second pole piece is a negative pole piece and is obtained by cutting a copper foil.
Another embodiment provides a button cell, including:
the first shell and the second shell are in insulation fit to form a core cavity;
according to the battery cell assembly in any technical scheme, the battery cell assembly is arranged in the battery cell cavity.
In the button battery, the electric core component is arranged in the electric core cavity, and the first current collector is arranged along the edge of the first pole piece in an extending manner, so that the first current collector forms a continuously extending current collector, the overcurrent part of the current collector is increased, and the overcurrent capacity is improved; compared with the traditional connection mode of the single-pole lug, the current-conducting capacity of the battery core assembly is improved, and the performance of the battery is favorably exerted.
The technical solution is further explained below:
in one embodiment, the button cell further comprises a sealing ring, and the sealing ring is arranged between the first shell and the second shell.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Furthermore, the drawings are not drawn to a 1:1 scale, and the relative sizes of the various elements in the drawings are drawn only by way of example, and not necessarily to true scale.
Fig. 1 is a schematic view of the overall structure of a button cell in the embodiment of the utility model;
fig. 2 is a schematic diagram of the jelly roll structure and the first and second current collectors in the embodiment of fig. 1;
fig. 3 is a schematic view of the embodiment of fig. 2 after performing a flattening process on the first and second current collectors;
fig. 4 is a sectional view of the overall structure of the button cell in the embodiment of fig. 1.
Reference is made to the accompanying drawings in which:
100. a roll core structure; 110. a first pole piece; 111. a first current collector; 112. first dough kneading; 120. a second pole piece; 121. a second current collector; 122. second kneading dough; 130. a first current collector; 140. a second current collector; 210. a first housing; 220. a second housing; 230. and (5) sealing rings.
Detailed Description
Embodiments of the present invention are described in detail below with reference to the accompanying drawings:
in order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
Referring to fig. 1 to 4, an embodiment provides an electric core assembly, including:
as shown in fig. 2 to 4, a first pole piece 110, a second pole piece 120, and a separator between the first pole piece 110 and the second pole piece 120, the first pole piece 110, the second pole piece 120, and the separator being wound to form a jellyroll structure 100.
The first pole piece 110, the separator and the second pole piece 120 are stacked and wound to form the winding core structure 100, and the separator plays a role in separating the first pole piece 110 from the second pole piece 120 and prevents conduction between the first pole piece 110 and the second pole piece 120 from causing short circuit.
Alternatively, the spacer may be a diaphragm.
As shown in fig. 1 to 4, the first pole piece 110 is provided with a first current collector 111, the first current collector 111 extends along the edge of the first pole piece 110 and is wound around the first pole piece 110, the second pole piece 120 is provided with a second current collector 121, one of the first current collector 111 and the second current collector 121 is used for electrically connecting with the first case 210, and the other of the first current collector 111 and the second current collector 121 is used for electrically connecting with the second case 220.
It can be understood that:
as shown in fig. 2 and 4, the first current collector 111 may be a first pole piece 110 extending from the upper end to the upper side, and the first current collector 111 is continuously extended along the upper end of the first pole piece 110, rather than being intermittently extended, so that the first current collector 111 is wound along with the first pole piece 110 and forms a wound current collector. Compared with the traditional mode of only leading out one tab, the flow conductivity of the corresponding pole (such as the positive pole) of the first pole piece 110 is greatly improved.
In the battery assembly, the separator is used for avoiding short circuit between the first pole piece 110 and the second pole piece 120, and the first current collector 111 extends along the edge of the first pole piece 110, so that the first current collector 111 forms a continuously extending current collector, the overcurrent part of the current collector is increased, and the overcurrent capacity is improved; compared with the traditional connection mode of the single-pole lug, the current-conducting capacity of the battery core assembly is improved, and the performance of the battery is favorably exerted.
Alternatively, as shown in fig. 1 and 4, the first case 210 may be a positive case, the second case 220 may be a negative case, the first pole piece 110 is electrically connected to the first case 210 through the first current collector 111, and the second pole piece 120 is electrically connected to the second case 220 through the second current collector 121, where the first pole piece 110 is a positive pole piece and the second pole piece 120 is a negative pole piece.
In one embodiment, referring to fig. 2, the second current collector 121 is extended along the edge of the second pole piece 120 and is wound along with the second pole piece 120, and the second current collector 121 and the first current collector 111 are respectively located on two opposite sides of the jelly roll structure.
The second current collector 121 and the first current collector 111 are arranged in the same manner, so that the current-conducting capacity of the corresponding pole (such as a negative pole) of the second pole piece 120 is improved. In this way, the overall current conducting capacity of the electric core assembly is improved.
In one embodiment, referring to fig. 4, the electrode assembly further includes a first current collector 130 and a second current collector 140, the first current collector 111 is electrically connected to the first current collector 130, the second current collector 121 is electrically connected to the second current collector 140, one of the first current collector 130 and the second current collector 140 is electrically connected to the first casing 210, and the other of the first current collector 130 and the second current collector 140 is electrically connected to the second casing 220.
Since the first current collector 111 and the second current collector 121 are both wound, the first current collector 111 is provided with a first current collecting piece 130, and the second current collector 121 is provided with a second current collecting piece 140, so as to facilitate electrical connection. The first current collector 111 may be electrically connected to the first case 210 through the first current collecting tab 130, and the second current collector 121 may be electrically connected to the second case 220 through the second current collecting tab 140.
In one embodiment, referring to fig. 2 and 3, the first current collector sheet 130 is located between the first current collector 111 and the first case 210, and an end of the first current collector 111 facing the first current collector sheet 130 is formed into a first kneading surface 112 through a kneading treatment.
In one embodiment, referring to fig. 2 and 3, the second current collector sheet 140 is located between the second current collector 121 and the second case 220, and an end of the second current collector 121 facing the second current collector sheet 140 is formed with a second kneading surface 122 through a kneading treatment.
Fig. 2 is a schematic structural view of the first current collector 111 and the second current collector 121 when the flattening process is not performed, and fig. 3 is a schematic structural view of the first current collector 111 and the second current collector 121 after the flattening process is performed.
Alternatively, the first current collector 111 may be an aluminum foil material, the second current collector 121 may be a copper foil material, and the first dough 112 and the second dough 122 are obtained through a foil-kneading process, respectively, so as to facilitate electrical connection with the first current collecting plate 130 through the first dough 112, and facilitate electrical connection with the second current collecting plate 140 through the second dough 122.
In one embodiment, the first current collecting tab 130 and the second current collecting tab 140 are both current collecting pads, one surface of the first current collecting tab 130 is welded to the first case 210, and the first current collector 111 is welded to the other surface of the first current collecting tab 130 through the first dough 112; the one side of the second current collecting piece 140 is welded to the second case 220, and the second current collecting piece 121 is welded to the other side of the second current collecting piece 140 through the second dough 122.
Alternatively, the welding may be laser spot welding, wire welding, resistance welding or ultrasonic welding.
In an embodiment, referring to fig. 4, when projected along the axial direction of the jelly roll structure 100, an outer contour of the first current collector 111 is located within an outer contour of the first current collector sheet 130, and an outer contour of the second current collector 121 is located within an outer contour of the second current collector sheet 140.
For example, when the first current collector 111 is disposed in a circular winding manner and the first current collector piece 130 is a circular piece, the diameter of the first current collector piece 130 is larger than the circular diameter of the first current collector 111, so as to facilitate the welding operation; the second current collector 121 and the second current collector sheet 140 have the same structure, and thus, description thereof is omitted.
In one embodiment, the first pole piece 110 and the second pole piece 120 are both cut with a suspended knife.
The suspension knife can be a suspension circular knife, so the suspension knife is arranged, the suspension knife cuts to obtain the first pole piece 110 and the second pole piece 120, burrs can be reduced or avoided on the first pole piece 110 and the second pole piece 120, the burrs are further avoided from piercing or scratching the isolating piece, and the short circuit problem of the first pole piece 110 and the second pole piece 120 caused by the damage of the isolating piece is avoided.
In one embodiment, the first pole piece 110 is a positive pole piece, and the first pole piece 110 is cut from an aluminum foil; the second pole piece 120 is a negative pole piece, and the second pole piece 120 is obtained by cutting a copper foil.
Referring to fig. 1 and 4, another embodiment provides a button cell, including:
the first shell 210 and the second shell 220 are in insulation fit to form an electric core cavity;
the cell assembly according to any one of the above embodiments, wherein the cell assembly is disposed in the cell cavity.
In the button battery, the cell component is arranged in the cell cavity, and the first current collector 111 extends along the edge of the first pole piece 110, so that the first current collector 111 forms a continuously extending current collector, the overcurrent part of the current collector is increased, and the overcurrent capacity is improved; compared with the traditional connection mode of the single-pole lug, the current-conducting capacity of the battery pack assembly is improved, and the performance of the battery is favorably exerted.
As shown in fig. 1 and 4, the first case 210 may be a positive electrode case, the second case 220 may be a negative electrode case, the first current collector 111 is welded to the first case 210 through the first current collecting tab 130, and the second current collector 121 is welded to the second case 220 through the second current collecting tab 140.
In one embodiment, referring to fig. 4, the button cell further includes a sealing ring 230, and the sealing ring 230 is disposed between the first casing 210 and the second casing 220.
The first casing 210 is a substantially circular cover, the second casing 220 is a substantially circular bottom, the first casing 210 covers the second casing 220, and the sealing ring 230 is interposed between the first casing 210 and the second casing 220 to perform a sealing function and an insulating function between the first casing 210 and the second casing 220.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An electrical core assembly, comprising:
the device comprises a first pole piece, a second pole piece and a spacer, wherein the spacer is positioned between the first pole piece and the second pole piece, and the first pole piece, the second pole piece and the spacer are wound to form a roll core structure;
the first pole piece is equipped with the first mass flow body, the first mass flow body is followed the border of first pole piece extends the setting and follows the first pole piece is convoluteed and is set up, the second pole piece is equipped with the second mass flow body, the first mass flow body with one in the second mass flow body is used for with first casing electric connection, the first mass flow body with another in the second mass flow body is used for with second casing electric connection.
2. The electric core assembly according to claim 1, wherein the second current collector is extended along the edge of the second pole piece and is wound along with the second pole piece, and the second current collector and the first current collector are respectively located on two opposite sides of the jelly roll structure.
3. The electric core assembly according to claim 2, wherein said electric core assembly further comprises a first current collector and a second current collector, said first current collector is electrically connected to said first current collector, said second current collector is electrically connected to said second current collector, one of said first current collector and said second current collector is electrically connected to said first housing, and the other of said first current collector and said second current collector is electrically connected to said second housing.
4. The core assembly according to claim 3, wherein the first current collector sheet is located between the first current collector and the first case, and an end of the first current collector facing the first current collector sheet is formed into a first kneading face by kneading treatment;
the second current collector piece is located the second current collector with between the second casing, the orientation of second current collector the one end of second current collector piece is handled through rubbing the flat and is formed the second and rub the face.
5. The electric core assembly according to claim 4, wherein the first current collecting piece and the second current collecting piece are both current collecting pads, one surface of the first current collecting piece is welded with the first shell, and the first current collector is welded with the other surface of the first current collecting piece through the first kneading surface; one side of the second current collecting piece is welded with the second shell, and the second current collecting piece is welded with the other side of the second current collecting piece through the second dough kneading.
6. The electrode assembly according to claim 4, wherein, when projected along the axial direction of the jelly roll structure, the outer contour of the first current collector is located within the outer contour of the first current collector piece, and the outer contour of the second current collector is located within the outer contour of the second current collector piece.
7. The electrical core assembly of any one of claims 1-6, wherein the first and second pole pieces are each cut with a suspended knife.
8. The electric core assembly according to claim 7, wherein the first pole piece is a positive pole piece, and the first pole piece is cut from aluminum foil; the second pole piece is a negative pole piece and is obtained by cutting a copper foil.
9. A button cell, comprising:
the first shell and the second shell are in insulation fit to form a core cavity;
the cell assembly of any one of claims 1 to 8, wherein the cell assembly is disposed within the cell cavity.
10. The button cell according to claim 9, further comprising a sealing ring disposed between the first housing and the second housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123087118.7U CN216928725U (en) | 2021-12-09 | 2021-12-09 | Battery core subassembly and button cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123087118.7U CN216928725U (en) | 2021-12-09 | 2021-12-09 | Battery core subassembly and button cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216928725U true CN216928725U (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123087118.7U Active CN216928725U (en) | 2021-12-09 | 2021-12-09 | Battery core subassembly and button cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216928725U (en) |
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2021
- 2021-12-09 CN CN202123087118.7U patent/CN216928725U/en active Active
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