CN114006090A - Button Battery - Google Patents
Button Battery Download PDFInfo
- Publication number
- CN114006090A CN114006090A CN202010738277.XA CN202010738277A CN114006090A CN 114006090 A CN114006090 A CN 114006090A CN 202010738277 A CN202010738277 A CN 202010738277A CN 114006090 A CN114006090 A CN 114006090A
- Authority
- CN
- China
- Prior art keywords
- tab
- soft
- button battery
- casing
- packed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000758 substrate Substances 0.000 claims abstract description 28
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 20
- 239000011889 copper foil Substances 0.000 claims description 20
- 238000003466 welding Methods 0.000 claims description 6
- 241000238367 Mya arenaria Species 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000012545 processing Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- NMWSKOLWZZWHPL-UHFFFAOYSA-N 3-chlorobiphenyl Chemical compound ClC1=CC=CC(C=2C=CC=CC=2)=C1 NMWSKOLWZZWHPL-UHFFFAOYSA-N 0.000 description 6
- 101001082832 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) Pyruvate carboxylase 2 Proteins 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000009459 flexible packaging Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
- H01M10/0427—Button cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
本发明涉及一种纽扣电池，包括壳体、PCB板和软包电芯；PCB板盖设在壳体的开口处以在二者的内侧形成容纳腔，软包电芯容纳在容纳腔内；软包电芯引出第一极耳和第二极耳；PCB板包括基板、电极片和内连片；电极片连接在基板的远离软包电芯的一侧，内连片连接在基板的靠近软包电芯的一侧，基板的边缘与壳体绝缘连接，电极片和内连片过孔连接；第一极耳与壳体电连接，第二极耳与内连片电连接。相对于另增绝缘层的纽扣电池，本发明的纽扣电池直接将PCB板盖设在壳体的开口处，减少了纽扣电池的尺寸，也降低了纽扣电池的加工难度，有利于纽扣电池的生产装配，易于大批量生产，提高了生产效率。
The invention relates to a button battery, comprising a casing, a PCB board and a soft-packed cell; the PCB board is covered at the opening of the casing to form an accommodating cavity inside the two, and the soft-packed electric cell is accommodated in the accommodating cavity; The battery pack leads out the first tab and the second tab; the PCB board includes a substrate, an electrode sheet and an inner connecting sheet; the electrode sheet is connected to the side of the substrate away from the soft-packed battery core, and the inner connecting sheet is connected to the substrate close to the soft-packed battery. On one side of the battery pack, the edge of the substrate is insulated with the shell, and the electrode sheet is connected with the inner connecting piece via holes; the first tab is electrically connected with the shell, and the second tab is electrically connected with the inner connecting piece. Compared with the button battery with an additional insulating layer, the button battery of the present invention directly covers the PCB board at the opening of the casing, which reduces the size of the button battery, reduces the processing difficulty of the button battery, and is beneficial to the production of the button battery. Assembly, easy mass production, and improved production efficiency.
Description
Technical Field
The invention belongs to the technical field of batteries, and particularly relates to a button battery.
Background
The button cell is also called as button cell, which is a cell with the external dimension like a small button, generally has larger diameter and thinner thickness; button cells are widely used in various miniature electronic products due to their small size. In recent years, with the development of science and technology, button cells are more and more deeply inserted into the lives of people, so that the requirements on the button cells are higher and higher.
The existing hard shell button battery comprises an upper cover, a lower cover, an insulating layer and a soft package battery cell, wherein the upper cover and the lower cover are connected in an insulating way through the insulating layer, and a cavity for accommodating the soft package battery cell is formed on the inner sides of the upper cover and the lower cover. However, the insulating layer is arranged between the upper cover and the lower cover, so that the size of the button cell is increased, the energy density of the button cell is reduced, the processing technology is complex, the production efficiency is low, and the cost is high.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the button cell is provided aiming at the problems of low production efficiency and high cost of the existing button cell.
In order to solve the technical problem, an embodiment of the invention provides a button battery, which comprises a shell, a PCB and a soft package battery cell; the PCB cover is arranged at the opening of the shell to form an accommodating cavity at the inner sides of the PCB cover and the shell, and the soft package battery cell is accommodated in the accommodating cavity; a first tab and a second tab with different polarities are led out of the soft-packaged cell;
the PCB comprises a substrate, an inner copper foil layer positioned on one side of the substrate close to the soft-package battery cell and an outer copper foil layer positioned on one side of the substrate far away from the soft-package battery cell; an inner connecting sheet is formed on the inner copper foil layer, and an electrode sheet is formed on the outer copper foil layer;
the edge of the substrate is in insulated connection with the shell, and the electrode plate is connected with the through hole of the inner connecting plate;
the first tab is electrically connected with the shell, and the second tab is electrically connected with the inner connecting piece.
Optionally, a protection circuit is disposed on the inner copper foil layer.
Optionally, a protection circuit is disposed on the outer copper foil layer.
Optionally, the button battery further comprises an elastic connecting piece connected to one side of the substrate close to the soft package battery core, and one end of the elastic connecting piece, which is far away from the substrate, is fixedly connected to the casing; the elastic connecting piece is respectively connected with the electrode plate and the inner connecting piece in an insulating way.
Optionally, the inside wall of the casing is provided with an annular flange protruding inwards, the outside wall of the elastic connecting piece is provided with an annular groove recessed inwards, and the annular flange is clamped with the annular groove.
Optionally, the elastic connecting piece is provided with a first notch for avoiding the first tab and a second notch for avoiding the second tab.
Optionally, the soft packaging core comprises a soft packaging shell and a pole core, wherein the soft packaging shell comprises an inner shell wrapping the pole core and a folded edge sealing the inner shell; the first tab is led out from the pole core and penetrates out of the soft cladding shell from the folded edge, and the second tab is led out from the pole core and penetrates out of the soft cladding shell from the folded edge.
Optionally, the first tab is welded with the inner wall of the shell, and a first insulating layer is attached to the portion of the first tab, which is exposed out of the soft clad shell, except for the welding point;
and the second lug is welded with the inner connecting sheet, and a second insulating layer is attached to the part of the second lug, which is exposed out of the soft clad, except the welding point.
Optionally, a third insulating layer is attached to an inner side wall of the housing.
Optionally, a fourth insulating layer is attached to the outer side wall of the folded edge.
Compared with the prior art, the button cell provided by the embodiment of the invention has the advantages that the PCB is directly covered at the opening of the shell, the inner connecting sheet and the electrode sheet are respectively arranged on two end surfaces of the substrate and are connected through the through hole, the first tab is electrically connected with the shell, and the second tab is electrically connected with the inner connecting sheet, so that the PCB is in insulated connection with the shell, short circuit between the shell and the inner connecting sheet is avoided, and the button cell is conveniently and electrically connected with other elements; compared with a button battery additionally provided with an insulating layer, the size of the button battery is reduced, the energy density of the button battery is improved, the situation of short circuit caused by the fact that the insulating layer is punctured can be avoided, the use safety of the button battery is improved, the processing difficulty of the button battery is reduced, the overall structure is simple, the button battery is beneficial to production and assembly, mass production is easy, the production efficiency is improved, and the production cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a button cell according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
fig. 4 is an exploded view of a button cell according to another embodiment of the present invention;
FIG. 5 is a schematic view of the structure of the substrate shown in FIG. 4;
fig. 6 is a schematic structural view of the elastic connector of fig. 4.
The reference numerals in the specification are as follows:
1. a housing; 11. an annular flange;
2. a PCB board; 21. a substrate; 211. connecting holes; 212. mounting grooves; 22. an electrode sheet; 23. an interconnecting piece;
3. soft-packaged battery cells; 31. a first tab; 32. a second tab; 33. an inner shell; 34. folding edges;
4. an elastic connecting member; 41. an annular groove; 42. a first notch; 43. a second notch;
5. a second insulating layer; 6. a third insulating layer; 7. and a fourth insulating layer.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. 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, the button battery provided by the embodiment of the invention includes a casing 1, a PCB 2 and a soft package battery core 3; the PCB 2 is covered at the opening of the shell 1 to form an accommodating cavity at the inner sides of the PCB and the shell, and the soft package battery cell 3 is accommodated in the accommodating cavity; the soft package battery core 3 is provided with a first tab 31 and a second tab 32 with different polarities;
the PCB 2 comprises a substrate 21, an inner copper foil layer positioned on one side of the substrate 21 close to the soft-package battery cell 3 and an outer copper foil layer positioned on one side of the substrate 21 far away from the soft-package battery cell 3; an inner connecting sheet 23 is formed on the inner copper foil layer, and an electrode sheet 22 is formed on the outer copper foil layer;
the edge of the substrate 21 is in insulated connection with the shell 1, and the electrode plate 22 is connected with the inner connecting plate 23 through a hole;
the first tab 31 is electrically connected to the case 1, and the second tab 32 is electrically connected to the interconnector plate 23.
Compared with the prior art, the button cell provided by the embodiment of the invention has the advantages that the PCB 2 is directly covered at the opening of the shell 1, the inner connecting sheet 23 and the electrode sheet 22 are respectively arranged on two end faces of the substrate 21, the first tab 31 is electrically connected with the shell 1, and the second tab 32 is electrically connected with the inner connecting sheet 23, so that the PCB 2 is in insulated connection with the shell 1, short circuit between the shell 1 and the inner connecting sheet 23 is avoided, and the button cell is conveniently electrically connected with other elements; compared with a button battery additionally provided with an insulating layer, the size of the button battery is reduced, the energy density of the button battery is improved, the situation of short circuit caused by the fact that the insulating layer is punctured can be avoided, the use safety of the button battery is improved, the processing difficulty of the button battery is also reduced, the overall structure is simple and compact, the button battery is beneficial to production and assembly, mass production is easy, the production efficiency is improved, and the production cost is reduced.
It should be noted that the case 1 is an electric conductor, and the case 1 is connected to the interconnector 23 and the electrode plate 22 in an insulated manner.
Specifically, a connection hole 211 is formed in the substrate 21, a conductive layer is formed on an inner wall of the connection hole 211, and the electrode sheet 22 and the interconnection sheet 23 are electrically connected through the conductive layer; simple structure need not to establish other structures in addition, and the processing and the installation of being convenient for have improved production efficiency.
In one embodiment, the inner copper foil layer is provided with a protection circuit; the protection circuit is directly arranged on the button cell, and when the button cell is in an abnormal state (such as overcharge, overdischarge, short circuit, overcurrent and the like), the protection circuit is disconnected to generate a circuit break, so that the button cell can be better protected, the use safety of the button cell is improved, and the service life of the button cell is prolonged.
Specifically, the inner copper foil layer is connected with circuit protection elements such as a positive temperature coefficient thermistor and the like, so that the structure is simple, and the processing and the installation are convenient.
In another embodiment, a protective circuit is provided on the outer copper foil layer; the protection circuit is directly arranged on the button cell, and when the button cell is in an abnormal state (such as overcharge, overdischarge, short circuit, overcurrent and the like), the protection circuit is disconnected to generate a circuit break, so that the button cell can be better protected, the use safety of the button cell is improved, and the service life of the button cell is prolonged.
Specifically, the external copper foil layer is connected with circuit protection elements such as a positive temperature coefficient thermistor and the like, so that the structure is simple, and the processing and the installation are convenient.
In one embodiment, as shown in fig. 2, the center lines of electrode sheet 22, substrate 21, and interconnect sheet 23 are located on the same axis; the connection hole 211 is located at the center of the substrate 21; the shell 1 is prevented from being in contact with the inner connecting sheet 23 or the electrode sheet 22, so that the shell is electrically connected, and the shell is simple in structure and convenient to process and mount.
In an embodiment, as shown in fig. 3, the button battery further includes an elastic connector 4 connected to one side of the substrate 21 close to the flexible package core 3, and one end of the elastic connector 4 away from the substrate 21 is fixedly connected to the casing 1; the elastic connecting piece 4 is respectively connected with the electrode plate 22 and the inner connecting plate 23 in an insulating way; simple structure improves the convenience and the steadiness that PCB board 2 and casing 1 are connected.
Specifically, as shown in fig. 5, a mounting groove 212 is further formed in one side of the substrate 21 close to the soft packing core 3, and the elastic connecting member 4 is fixed in the mounting groove 212; the stability of the connection between the elastic connecting piece 4 and the base plate 21 is improved, the compactness of the overall structure of the button cell is improved, the size of the button cell is prevented from being excessively increased, the structure is simple, and the button cell is convenient to mount.
Specifically, the elastic connecting member 4 may be fixed on the substrate 21 by injection molding or by a patch or the like.
In one embodiment, as shown in fig. 4 and 6, the inner side wall of the housing 1 is provided with an annular flange 11 protruding inwards, the outer side wall of the elastic connecting member 4 is provided with an annular groove 41 recessed inwards, and the annular flange 11 is clamped with the annular groove 41; the convenience and the stability of the connection of the PCB 2 and the shell 1 are improved, the structure is simple, and the processing and the installation are convenient.
In one embodiment, as shown in fig. 6, the elastic connecting member 4 is provided with a first notch 42 for avoiding the first tab 31 and a second notch 43 for avoiding the second tab 32; the button cell structure has the advantages that the button cell structure is convenient to electrically connect the first lug 31 and the shell 1 and the second lug 32 and the inner connecting sheet 23, the size increase of the button cell can be reduced, meanwhile, the button cell structure is of a semi-sealed structure, a certain expansion space is provided for the overcharged button cell, and the use safety of the button cell is improved.
Specifically, the lead-out positions of the first tab 31 and the second tab 32 are circumferentially different by 180 degrees; the distance between the first tab 31 and the second tab 32 is increased, so that the first tab 31 and the second tab 32 can be conveniently led out, and the interference between the first tab 31 and the second tab 32 is avoided.
In one embodiment, as shown in fig. 4, the flexible packaging core 3 includes a flexible packaging shell and a pole core, the flexible packaging shell includes an inner shell 33 wrapping the pole core and a folded edge 34 sealing the inner shell 33; the first tab 31 is drawn from the pole core and out of the bladder at fold 34 and the second tab 32 is drawn from the pole core and out of the bladder at fold 34.
Preferably, a fourth insulating layer 7 is attached to the outer side wall of the folded edge 34; the function of insulation protection is achieved, and short circuit inside the button cell is avoided.
In one embodiment, not shown, the first tab 31 is welded to the inner wall of the casing 1, and a first insulating layer is attached to a portion of the first tab 31 other than the welding point of the portion exposed from the soft clad; the first insulating layer plays an insulating protection role for the first tab 31, and short circuit inside the button cell is avoided.
In one embodiment, as shown in fig. 4, the second pole ear 32 is welded to the interconnector sheet 23, and the second insulation layer 5 is attached to a portion of the second pole ear 32 other than the welding point of the portion exposed out of the pouch case; the second insulating layer 5 plays an insulating protection role for the second pole lug 32, and short circuit inside the button cell is avoided.
In one embodiment, as shown in fig. 4, a third insulating layer 6 is attached to the inner side wall of the housing 1; further plays a role of insulation protection, and the second pole lug 32 is prevented from being electrically connected with the shell 1 to generate short circuit.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010738277.XA CN114006090A (en) | 2020-07-28 | 2020-07-28 | Button Battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010738277.XA CN114006090A (en) | 2020-07-28 | 2020-07-28 | Button Battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114006090A true CN114006090A (en) | 2022-02-01 |
Family
ID=79920508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010738277.XA Pending CN114006090A (en) | 2020-07-28 | 2020-07-28 | Button Battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114006090A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023103245A1 (en) | 2023-02-10 | 2024-08-14 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Battery cell for use in a battery module |
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| JP2013025951A (en) * | 2011-07-19 | 2013-02-04 | Hitachi Maxell Energy Ltd | Battery unit |
| CN103384927A (en) * | 2011-02-23 | 2013-11-06 | 日立麦克赛尔株式会社 | Battery unit and electric device |
| CN109301106A (en) * | 2018-11-21 | 2019-02-01 | 新余赣锋电子有限公司 | A kind of battery with soft pack battery |
| CN111129388A (en) * | 2019-12-30 | 2020-05-08 | 广东微电新能源有限公司 | An energy storage device and an assembling method of the energy storage device |
| CN111224024A (en) * | 2018-11-23 | 2020-06-02 | 常州微宙电子科技有限公司 | Lithium ion battery and ceramic cover plate thereof |
| CN211088318U (en) * | 2019-10-08 | 2020-07-24 | 重庆市紫建电子有限公司 | Semimetal shell button cell |
| CN212380483U (en) * | 2020-07-28 | 2021-01-19 | 曙鹏科技（深圳）有限公司 | Button cell |
-
2020
- 2020-07-28 CN CN202010738277.XA patent/CN114006090A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103384927A (en) * | 2011-02-23 | 2013-11-06 | 日立麦克赛尔株式会社 | Battery unit and electric device |
| JP2013025951A (en) * | 2011-07-19 | 2013-02-04 | Hitachi Maxell Energy Ltd | Battery unit |
| CN109301106A (en) * | 2018-11-21 | 2019-02-01 | 新余赣锋电子有限公司 | A kind of battery with soft pack battery |
| CN111224024A (en) * | 2018-11-23 | 2020-06-02 | 常州微宙电子科技有限公司 | Lithium ion battery and ceramic cover plate thereof |
| CN211088318U (en) * | 2019-10-08 | 2020-07-24 | 重庆市紫建电子有限公司 | Semimetal shell button cell |
| CN111129388A (en) * | 2019-12-30 | 2020-05-08 | 广东微电新能源有限公司 | An energy storage device and an assembling method of the energy storage device |
| CN212380483U (en) * | 2020-07-28 | 2021-01-19 | 曙鹏科技（深圳）有限公司 | Button cell |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023103245A1 (en) | 2023-02-10 | 2024-08-14 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Battery cell for use in a battery module |
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