CN110299503B - Battery top cover with external fusing structure - Google Patents
Battery top cover with external fusing structure Download PDFInfo
- Publication number
- CN110299503B CN110299503B CN201910691341.0A CN201910691341A CN110299503B CN 110299503 B CN110299503 B CN 110299503B CN 201910691341 A CN201910691341 A CN 201910691341A CN 110299503 B CN110299503 B CN 110299503B
- Authority
- CN
- China
- Prior art keywords
- top cover
- section
- cover plate
- segment
- battery
- 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.)
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Links
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 14
- 239000000155 melt Substances 0.000 abstract description 2
- 229910052744 lithium Inorganic materials 0.000 description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 230000008602 contraction Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention relates to the technical field of battery top covers, and discloses a battery top cover with an external fusing structure, which comprises a top cover plate, a pole column arranged on the top cover plate and a connecting sheet; the connecting piece is provided with a tab section and a safety section connected with the pole column, the tab section is arranged in the top cover plate in a penetrating way, the lower end of the tab section extends to the lower side of the top cover plate to form a battery cell connecting section connected with the battery cell, the upper end of the tab section extends to the upper side of the top cover plate, the safety section is arranged above the top cover plate, and a fusing structure is arranged on the safety section; the external load power supply through the utmost point post, electric current flow tab section and insurance section, and form the return circuit, set up the fusing structure on the insurance section, when the electric current on the return circuit is too big, the fusing structure fuses first, and the top of lamina tecti is arranged in to the insurance section, realizes the external of fusing structure, after fusing structure melts, can realize the change to external fusing structure through changing the insurance section, convenient and fast.
Description
Technical Field
The invention relates to the technical field of battery top covers, in particular to a battery top cover with an external fusing structure.
Background
A "lithium battery" is a type of battery using a nonaqueous electrolyte solution, which uses lithium metal or a lithium alloy as a negative electrode material. The chemical characteristics of lithium metal are very active, so that the processing, storage and use of lithium metal have very high requirements on environment, and along with the development of science and technology, the lithium battery has become the mainstream at present.
Traditional lithium battery module includes electric core, battery case, lamina tecti and is used for overload protection's fusing structure, and electric core and fusing structure are arranged in battery case's inside, and lamina tecti is fixed on battery case to the closing cap battery case makes battery case inside sealed.
In the above-mentioned lithium battery module, a fusing structure for overload protection is arranged in the inside of battery case, and the leakproofness of lithium ion battery at present can not be destroyed, and sealed destruction is that the battery needs to be scrapped promptly, consequently can't open the lamina tecti, when the current through fusing structure is too big and lead to fusing structure fusing, can't change the inside fusing structure of battery case.
Disclosure of Invention
The invention aims to provide a battery top cover with an external fusing structure, and aims to solve the problem that in the prior art, the fusing structure of a battery module cannot be replaced.
The invention is realized in such a way that the battery top cover with the external fusing structure comprises a top cover plate, a pole column arranged on the top cover plate and a connecting sheet; the connection piece has the utmost point ear section and with the insurance section that the utmost point post is connected, the utmost point ear section wears to establish in the lamina tecti, the lower extreme of utmost point ear section extends to the below of lamina tecti forms with electric core connection's electric core linkage segment, the upper end of utmost point ear section extends to the top of lamina tecti, the insurance section is arranged in the top of lamina tecti, be provided with the fusing structure on the insurance section.
Further, the side edges of the middle part of the safety section are recessed inwards to form a shrinkage section with a narrowed width, and the shrinkage section forms the fusing structure.
Further, both side edges of the middle part of the safety section are respectively recessed inward.
Further, the safety section has a connection end connected with the shrink section, the connection end of the safety section being embedded in the pole.
Further, a notch is formed in the side edge of the pole, and the connecting end of the safety section is embedded into the notch.
Further, the connecting end of the protection section comprises an embedded section and an extension section, wherein the embedded section is embedded in the notch, and the extension section is connected with the contraction section and is positioned outside the pole.
Further, the safety section is arranged horizontally above the top cover plate.
Further, the top cover plate is provided with an upward upper surface, and the safety section and the upper surface of the top cover plate are arranged in a suspending manner.
Further, the safety segment has a welding end with a first welding face facing the tab segment and the tab segment has a second welding face facing the welding end, the first welding face being bonded to the second welding face.
Further, a mounting hole is formed in the top cover plate, an insulating sleeve is arranged in the mounting hole, a through hole is formed in the insulating sleeve, and the tab section is arranged in the through hole of the insulating sleeve in a penetrating mode; the upper end of the insulating sleeve extends to the upper side of the top cover plate to form an upper sealing ring, and the upper sealing ring surrounds the periphery of the through hole and is pressed against the upper surface of the top cover plate; the lower extreme of insulating cover extends to the below of lamina tecti forms down the sealing ring, down the sealing ring encircle the periphery of through-hole, and support and press the lower surface of lamina tecti.
Compared with the prior art, the battery top cover with the external fusing structure provided by the invention supplies power to an external load through the pole, the current flows through the pole lug section and the safety section to form a loop, the fusing structure is arranged on the safety section, when the current on the loop is overlarge, the fusing structure is fused first, the safety section is arranged above the top cover plate, the external fusing structure is realized, and after the fusing structure is fused, the external fusing structure can be replaced by replacing the safety section, so that the battery top cover is convenient and quick.
Drawings
Fig. 1 is a schematic perspective view of a battery top cover with an external fusing structure according to the present invention;
FIG. 2 is a schematic cross-sectional view of a battery top cover with an external fuse structure according to the present invention;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2 provided by the present invention;
Fig. 4 is a bottom view of a battery top cover with an external fusing structure.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The implementation of the present invention will be described in detail below with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-4, a preferred embodiment of the present invention is provided.
The battery top cover with the external fusing structure provided in this embodiment can be applied to a lithium battery, and of course, the battery top cover can also be applied to other batteries, and is not limited to the application in this embodiment.
The battery top cover of the external fusing structure comprises a top cover plate 11, a pole column 21 arranged on the top cover plate 11 and a connecting sheet; the connection piece has tab section 22 and the insurance section 23 of being connected with utmost point post 21, and tab section 22 wears to establish in lamina tecti 11, and tab section 22's lower extreme extends to lamina tecti 11 below, forms the electric core linkage segment of being connected with electric core, and tab section 22's upper end extends to lamina tecti 11's top, and insurance section 23 is arranged in lamina tecti 11's top, is provided with fusing structure 231 on the insurance section 23.
The battery top cap of foretell external fusing structure 231, through the external load power supply of utmost point post 21, the electric current flows through utmost point ear section 22 and fuse section 23, and form the return circuit, set up fusing structure 231 on the fuse section 23, when the electric current on the return circuit is too big, fusing structure 231 fuses first, and the top of lamina tecti 11 is arranged in to the fuse section 23, realizes the external of fusing structure 231, after fusing structure 231 melts, can realize the change to external fusing structure 231 through changing the fuse section 23, convenient and fast.
The top cover 11 is used for covering a battery case, which encloses a plurality of battery cells, and when the top cover 11 covers the battery case, the fuse structure 231 is disposed outside the battery case since the fuse section 23 is disposed above the top cover 11.
The sides of the middle portion of the fuse section 23 are recessed inward to form a narrowed section of narrowed width, which forms a fuse structure 231.
After the pole 21 is conducted with an external load, the circuit is conducted to form a loop, when current flows through the protection section 23 and passes through the contraction section, the width is narrowed, the temperature of the fusing structure 231 is increased, and when the current is overlarge, the fusing structure 231 fuses, so that the overload protection effect on the circuit is achieved.
The two sides at the middle part of the fuse section 23 are respectively recessed inwards, the two sides are simultaneously recessed inwards, the width of the formed shrinkage section reaches the design requirement, and the fusing structure 231 formed by the shrinkage section plays an overload protection role on the circuit.
The protection section 23 is provided with a connecting end 232 connected with the contraction section, the connecting end 232 of the protection section 23 is embedded in the pole 21, and the protection section 23 is embedded in the pole 21 through the connecting end 232, so that the protection section 23 is electrically connected with the pole 21.
The side of the pole 21 is formed with a notch 211, and a connecting end 232 of the safety section 23 is embedded in the notch 211, and the electric connection between the safety section 23 and the pole 21 is realized by the abutting connection between the connecting end 232 and the notch 211.
The surface of the connection end 232 abutting against the notch 211 is completely surface-bonded, so that the contact area between the connection end 232 of the safety section 23 and the notch 211 of the pole 21 is ensured to be large enough, and when current flows through the contact position of the connection end 232 and the notch 211, the heating value is not increased due to the fact that the contact area is too small, and the connection end 232 of the safety section 23 or the pole 21 is damaged.
The connection end 232 of the fuse section 23 includes an embedded section embedded in the notch 211 and an extended section connected to the contracted section and located outside the pole 21.
The embedded section is embedded into the notch 211 to realize the electrical connection between the safety section 23 and the pole 21; because the extension section is located the outside of utmost point post 21, the upper surface of extension section does not receive the shielding of utmost point post 21, and the shrink section fusing back, change the dangerous segment 23 can not receive the hindrance of utmost point post 21, makes the change operation simpler and more convenient.
The extension section has the extension face towards tab section 22, and the utmost point post 21 has the utmost point post 21 face towards tab section 22, and the extension face is not parallel and level with utmost point post 21 face, and the extension face is in the left side of utmost point post 21 face, therefore the shrink section does not contact breach 211, when fusing structure 231 fuses, the fusing of shrink section can not cause the influence to utmost point post 21, avoids damaging utmost point post 21.
The safety section 23 is horizontally arranged above the top cover plate 11, and the safety section 23 is conveniently connected with the tab section 22 and the pole post 21 respectively.
The upper surface that lamina tecti 11 has up arranging is unsettled arranging between insurance section 23 and the upper surface of lamina tecti 11, and when fusing structure 231 fused, owing to be unsettled arranging between insurance section 23 and the upper surface of lamina tecti 11, fusing structure 231 does not contact lamina tecti 11, avoids causing the damage to lamina tecti 11.
The fuse section 23 has a welding end 233, the welding end 233 having a first welding face facing the tab section 22, the tab section 22 having a second welding face facing the welding end 233, the first welding face being bonded to the second welding face.
The first welding surface contacts with the second welding surface, and the welding ends 233 and the tab sections 22 are completely bonded, so that the contact area is maximized, and the welding position is prevented from being damaged due to excessive heat generated when current flows through the welding position.
The top cover plate 11 is provided with a mounting hole 111, the mounting hole 111 is provided with an insulating sleeve 112, the insulating sleeve 112 is provided with a through hole 113, and the tab section 22 is arranged in the through hole 113 of the insulating sleeve 112 in a penetrating manner; the upper end of the insulating sleeve 112 extends above the top cover plate 11 to form an upper sealing ring 114, and the upper sealing ring 114 surrounds the periphery of the through hole 113 and is pressed against the upper surface of the top cover plate 11; the lower end of the insulating sleeve 112 extends below the top cover plate 11 to form a lower sealing ring 115, and the lower sealing ring 115 surrounds the periphery of the through hole 113 and abuts against the lower surface of the top cover plate 11.
The tab section 22 is arranged in the through hole 113 of the insulating sleeve 112 in a penetrating way, the insulating sleeve 112 is attached to the outer surface of the tab section 22, so that the tab section 22 is buffer-protected, and meanwhile, the tab section 22 is separated from the top cover plate 11, so that short circuit of a circuit caused by conduction between the tab section 22 and the top cover plate 11 is avoided; the upper sealing ring 114 and the lower sealing ring 115 seal the mounting hole 111 together, so that foreign matters and water are prevented from entering the battery case from the mounting hole 111, and pollution and damage to the battery cell are avoided.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The battery top cover with the external fusing structure is characterized by comprising a top cover plate, a pole column arranged on the top cover plate and a connecting sheet; the connecting piece is provided with a tab segment and a safety segment connected with the pole, the tab segment is arranged in the top cover plate in a penetrating way, the lower end of the tab segment extends to the lower side of the top cover plate to form a battery cell connecting segment connected with a battery cell, the upper end of the tab segment extends to the upper side of the top cover plate, the safety segment is arranged above the top cover plate, and a fusing structure is arranged on the safety segment; and when the current on the loop is overlarge, the fusing structure fuses first.
2. The battery top cover of claim 1, wherein the side edges of the middle portion of the safety segment are recessed inwardly to form a narrowed width pinch-out segment, the pinch-out segment forming the fuse structure.
3. The battery top cover of claim 2, wherein the two sides of the middle portion of the safety segment are recessed inwardly.
4. The battery top cover of claim 3, wherein the safety segment has a connection end connected to the retraction segment, the connection end of the safety segment being embedded in the post.
5. The battery top cover of claim 4, wherein the side of the pole is formed with a notch, and the connection end of the fuse section is embedded in the notch.
6. The battery top cover of claim 5, wherein the connecting end of the fuse section comprises an embedded section embedded in the notch and an extended section connected to the contracted section and located outside the post.
7. The battery top cover of an external fuse structure of any of claims 1-6, wherein the safety segment is disposed horizontally above the top cover plate.
8. The battery top cover of claim 7, wherein the top cover plate has an upwardly disposed upper surface, and the safety segment is suspended from the upper surface of the top cover plate.
9. The battery top cover of any one of claims 1-6, wherein the safety segment has a welding end with a first welding surface facing the tab segment and the tab segment has a second welding surface facing the welding end, the first welding surface being bonded to the second welding surface.
10. The battery top cover with the external fusing structure of any one of claims 1 to 6, wherein a mounting hole is formed in the top cover plate, an insulating sleeve is arranged in the mounting hole, a through hole is formed in the insulating sleeve, and the tab section is penetrated in the through hole of the insulating sleeve; the upper end of the insulating sleeve extends to the upper side of the top cover plate to form an upper sealing ring, and the upper sealing ring surrounds the periphery of the through hole and is pressed against the upper surface of the top cover plate; the lower extreme of insulating cover extends to the below of lamina tecti forms down the sealing ring, down the sealing ring encircle the periphery of through-hole, and support and press the lower surface of lamina tecti.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691341.0A CN110299503B (en) | 2019-07-29 | 2019-07-29 | Battery top cover with external fusing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691341.0A CN110299503B (en) | 2019-07-29 | 2019-07-29 | Battery top cover with external fusing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110299503A CN110299503A (en) | 2019-10-01 |
| CN110299503B true CN110299503B (en) | 2024-05-14 |
Family
ID=68032036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910691341.0A Active CN110299503B (en) | 2019-07-29 | 2019-07-29 | Battery top cover with external fusing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110299503B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113224427A (en) * | 2020-01-21 | 2021-08-06 | 常州微宙电子科技有限公司 | PCB type battery cover plate, preparation method thereof and battery with PCB type battery cover plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4555451A (en) * | 1985-01-29 | 1985-11-26 | Pines Of America, Inc. | Storage battery with built-in fuse |
| CN206947390U (en) * | 2017-07-24 | 2018-01-30 | 长沙锂安能电子科技有限公司 | Battery explosion-proof cover plate assembly with external safety protection device easy to replace |
| CN108470858A (en) * | 2018-05-16 | 2018-08-31 | 深圳市凯中精密技术股份有限公司 | A kind of battery cover board and battery |
| CN209029463U (en) * | 2018-10-12 | 2019-06-25 | 江苏塔菲尔新能源科技股份有限公司 | Power battery connection sheet and power battery |
| CN210040385U (en) * | 2019-07-29 | 2020-02-07 | 常州瑞德丰精密技术有限公司 | Battery top cap of external fusing structure |
-
2019
- 2019-07-29 CN CN201910691341.0A patent/CN110299503B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4555451A (en) * | 1985-01-29 | 1985-11-26 | Pines Of America, Inc. | Storage battery with built-in fuse |
| CN206947390U (en) * | 2017-07-24 | 2018-01-30 | 长沙锂安能电子科技有限公司 | Battery explosion-proof cover plate assembly with external safety protection device easy to replace |
| CN108470858A (en) * | 2018-05-16 | 2018-08-31 | 深圳市凯中精密技术股份有限公司 | A kind of battery cover board and battery |
| CN209029463U (en) * | 2018-10-12 | 2019-06-25 | 江苏塔菲尔新能源科技股份有限公司 | Power battery connection sheet and power battery |
| CN210040385U (en) * | 2019-07-29 | 2020-02-07 | 常州瑞德丰精密技术有限公司 | Battery top cap of external fusing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110299503A (en) | 2019-10-01 |
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Address after: 399 Minghu Road, Jintan District, Changzhou City, Jiangsu Province Patentee after: Jiangsu Ruidefeng Precision Technology Co.,Ltd. Country or region after: China Address before: 399 Minghu Road, Jintan District, Changzhou City, Jiangsu Province Patentee before: Changzhou Redford Precision Technology Co.,Ltd. Country or region before: China |
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