CN210040385U - Battery top cap of external fusing structure - Google Patents
Battery top cap of external fusing structure Download PDFInfo
- Publication number
- CN210040385U CN210040385U CN201921209825.9U CN201921209825U CN210040385U CN 210040385 U CN210040385 U CN 210040385U CN 201921209825 U CN201921209825 U CN 201921209825U CN 210040385 U CN210040385 U CN 210040385U
- Authority
- CN
- China
- Prior art keywords
- section
- top cover
- cover plate
- external
- fusing structure
- 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.)
- Withdrawn - After Issue
Links
- 238000003466 welding Methods 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 16
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 229910052744 lithium Inorganic materials 0.000 description 8
- 230000008602 contraction Effects 0.000 description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 230000001681 protective effect 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
- 239000012535 impurity Substances 0.000 description 1
- 238000010030 laminating 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
- 230000001012 protector Effects 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
Images
Classifications
-
- 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
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model 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, the tab section is arranged in the top cover plate in a penetrating mode, the lower end of the tab section extends to the lower portion of the top cover plate to form a cell connecting section connected with a cell, the upper end of the tab section extends to the upper portion 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; supply power to the external load through utmost point post, the electric current flows through utmost point ear section and security segment, and forms the return circuit, sets up fusing structure on the security segment, and when the electric current on the return circuit was too big, fusing structure fuses at first, and the top of lamina tecti is arranged in to the security segment, realizes fusing structure's external, after fusing structure fuses, can realize the change to external fusing structure through changing the security segment, convenient and fast.
Description
Technical Field
The patent of the utility model relates to a battery top cap's technical field particularly, relates to battery top cap of external fusing structure.
Background
A "lithium battery" is a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. Because the chemical properties of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high, and the lithium battery becomes the mainstream at present along with the development of scientific technology.
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 the lamina tecti is fixed on battery case to the closing cap battery case makes battery case internal seal.
Among the foretell lithium battery module, the inside of battery case is arranged in to fusing structure for overload protection, and lithium ion battery's leakproofness is can not destroy at present, and sealed destruction is the battery and need scrap, consequently can't open the lamina tecti, when too big and lead to fusing structure fusing through fusing structure's electric current, can't change the inside fusing structure of battery case.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a battery top cap of external fusing structure aims at solving prior art, the unable problem of changing of fusing structure of battery module.
The utility model is realized in such a way that the battery top cover with an external fusing structure comprises a top cover plate, a pole column arranged on the top cover plate and a connecting sheet; the connecting piece has utmost point ear section and with the insurance section that utmost point post is connected, utmost point ear section wears to establish in the lamina tecti, utmost point ear section's lower extreme extends to the below of lamina tecti, form with the electric core linkage segment that the electric core is connected, utmost point ear section's upper end extends to the top of lamina tecti, the insurance section is arranged in the top of lamina tecti, be provided with fusing structure on the insurance section.
Further, the side of the middle part of the protecting section is inwards concave to form a contraction section with a narrowed width, and the contraction section forms the fusing structure.
Further, two side edges of the middle part of the safety part are respectively inwards concave.
Further, the safety section has a connection end connected to the constriction 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 protection section is embedded in the notch.
Further, the connecting end of the protection section comprises an embedded section and an extending section, the embedded section is embedded in the notch, and the extending section is connected with the contracting section and is positioned outside the pole.
Further, the safety section is horizontally arranged above the top cover plate.
Further, the top cover plate is provided with an upper surface which is arranged upwards, and the safety section and the upper surface of the top cover plate are arranged in a suspended mode.
Further, the protection section is provided with a welding end, the welding end is provided with a first welding surface facing the lug section, the lug section is provided with a second welding surface facing the welding end, and the first welding surface is in fit welding with the second welding surface.
Furthermore, 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 manner; the upper end of the insulating sleeve extends to the upper part 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 end of the insulating sleeve extends to the lower side of the top cover plate to form a lower sealing ring, and the lower sealing ring surrounds the periphery of the through hole and is pressed against the lower surface of the top cover plate.
Compared with the prior art, the utility model provides an external fusing structure's battery top cap supplies power to the external load through utmost point post, and the electric current flows through utmost point ear section and security section, and forms the return circuit, sets up fusing structure in the security section, when the electric current on the return circuit is too big, fusing structure fuses at first, and the top of lamina tecti is arranged in to the security section, realizes fusing structure's external, after fusing structure fuses, can realize the change to external fusing structure through changing the security section, and is convenient and fast.
Drawings
Fig. 1 is a schematic perspective view of a battery top cap with an external fuse structure according to the present invention;
fig. 2 is a schematic sectional view of a battery top cap of the external fuse structure provided by the present invention;
fig. 3 is an enlarged schematic view of a portion a of fig. 2 according to the present invention;
fig. 4 is a bottom view of the battery top cap with the external fuse structure provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, 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.
The following describes the implementation of the present invention in detail 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 are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1-4, the preferred embodiment of the present invention is shown.
The battery top cover with the external fusing structure provided by the embodiment can be applied to a lithium battery, and certainly, the battery top cover can also be applied to other batteries, and is not limited to the application in the embodiment.
The battery top cover with the external fusing structure comprises a top cover plate 11, a pole 21 arranged on the top cover plate 11 and a connecting sheet; the connection piece has utmost point ear section 22 and the insurance section 23 of being connected with utmost point post 21, and utmost point ear section 22 wears to establish in the lamina tecti 11, and the lower extreme of utmost point ear section 22 extends to the below of lamina tecti 11, forms the electric core linkage segment of being connected with electric core, and the upper end of utmost point ear section 22 extends to the top of lamina tecti 11, and the top of lamina tecti 11 is arranged in to insurance section 23, is provided with fusing structure 231 on the insurance section 23.
The external load power supply of foretell external fusing structure 231, supply power through utmost point post 21, the electric current flows through utmost point ear section 22 and security section 23, and form the return circuit, set up fusing structure 231 on the security section 23, when the electric current on the return circuit is too big, fusing structure 231 fuses at first, the top of lamina tecti 11 is arranged in to security section 23, realize fusing structure 231's external, after fusing structure 231 fuses, can realize the change to external fusing structure 231 through changing security section 23, and is convenient and fast.
The top cover plate 11 is used for sealing the battery shell, the battery shell encloses a plurality of battery cores, and when the top cover plate 11 is used for sealing the battery shell, the fusing structure 231 can be arranged outside the battery shell due to the fact that the protecting section 23 is arranged above the top cover plate 11.
The sides of the middle portion of the protector section 23 are recessed inward to form a narrowed section, which forms the fusing structure 231.
After the pole 21 is conducted with an external load, a circuit is conducted to form a loop, current flows through the safety section 23, when the current passes through the contraction section, the width of the contraction section is narrowed, the temperature of the fusing structure 231 is increased, and when the current is too large, the fusing structure 231 is fused, so that the overload protection effect is achieved on the circuit.
Two sides of the middle part of the safety section 23 are recessed inwards respectively, the two sides are recessed inwards at the same time, the width of the formed contraction section reaches the design requirement, and the fusing structure 231 formed by the contraction section plays a role in overload protection for the circuit.
The safety section 23 is provided with a connecting end 232 connected with the contraction section, the connecting end 232 of the safety section 23 is embedded in the pole 21, the safety section 23 is embedded in the pole 21 through the connecting end 232, and the electric connection between the safety section 23 and the pole 21 is realized.
The side of utmost point post 21 is formed with breach 211, and the link 232 embedding of insurance section 23 is in breach 211, and insurance section 23 realizes the electric connection of insurance section 23 and utmost point post 21 through the butt of link 232 and breach 211.
The surface that link 232 and breach 211 looks butt is complete face laminating, guarantees that the area of contact between the link 232 of insurance section 23 and the breach 211 of utmost point post 21 is enough big, and when the contact position between them was flowed through to the electric current, can not lead to calorific capacity increase because area of contact undersize, led to the fact the damage to link 232 or utmost point post 21 of insurance section 23.
The connection end 232 of the protection section 23 includes an embedded section embedded in the notch 211 and an extended section connected with 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 protection 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 sheltering from of utmost point post 21, and after the shrink section fusing, change the hindrance that protective section 23 can not receive utmost point post 21, makes the change operation more simple and convenient.
The extension section has the extension face towards utmost point ear section 22, and utmost point post 21 has the utmost point post 21 face towards utmost point ear section 22, and the extension face is uneven with utmost point post 21 face, and extends the left side that the face is in utmost point post 21 face, consequently the shrink section does not contact breach 211, and 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 protective section 23 is horizontally arranged above the top cover plate 11, so that the protective section 23 is conveniently connected with the tab section 22 and the pole 21 respectively.
The lamina tecti 11 has the upper surface of arranging up, is unsettled between the upper surface of insurance section 23 and lamina tecti 11 and arranges, and when fusing structure 231 fuses, because be unsettled between the upper surface of insurance section 23 and lamina tecti 11 and arrange, fusing structure 231 can not contact lamina tecti 11, avoids causing the damage to lamina tecti 11.
The protection section 23 has a welding end 233, the welding end 233 has a first welding surface facing the tab section 22, the tab section 22 has a second welding surface facing the welding end 233, and the first welding surface and the second welding surface are welded together.
The first welding surface is in contact with the second welding surface and completely attached, the contact area between the welding end 233 and the tab section 22 is the largest, and the damage of the welding position due to excessive heat generated when current flows through the welding position is avoided.
A mounting hole 111 is formed in the top cover plate 11, an insulating sleeve 112 is arranged in the mounting hole 111, a through hole 113 is formed in the insulating sleeve 112, 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 to the upper side of 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 to the lower part of 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 is pressed 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 manner, the insulating sleeve 112 is attached to the outer surface of the tab section 22, the tab section 22 is buffered and protected, and meanwhile, the tab section 22 is separated from the top cover plate 11, so that the short circuit of a circuit caused by the 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 jointly seal the mounting hole 111, so that external impurities and water are prevented from entering the battery shell from the mounting hole 111 to pollute and damage the battery cell.
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 (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 has utmost point ear section and with the insurance section that utmost point post is connected, utmost point ear section wears to establish in the lamina tecti, utmost point ear section's lower extreme extends to the below of lamina tecti forms the electric core linkage segment of being connected with electric core, utmost point ear section's upper end extends to the top of lamina tecti, the insurance section is arranged in the top of lamina tecti, be provided with fusing structure on the insurance section.
2. The battery top cap with the external fusing structure as defined in claim 1, wherein the middle portion of the protecting member is inwardly recessed to form a narrowed portion, and the narrowed portion forms the fusing structure.
3. The battery top cap with the external fusing structure as defined in claim 2, wherein both sides of the middle portion of the protecting member are recessed inward.
4. The battery top cap with the external fuse structure as claimed in claim 3, wherein the protection member has a connection end connected to the shrinkage member, and the connection end of the protection member is embedded in the terminal post.
5. The battery top cap with the external fuse structure as claimed in claim 4, wherein the side of the terminal post is formed with a notch, and the connection end of the protection member is embedded in the notch.
6. The battery top cover with the external fuse structure as claimed in claim 5, wherein the connection end of the protection member comprises an embedded section and an extended section, the embedded section is embedded in the gap, and the extended section is connected with the shrinkage section and is located outside the terminal post.
7. The battery top cover of an external fuse structure as defined in any one of claims 1-6, wherein the protection section is horizontally disposed above the top cover plate.
8. The battery top cap with the external fuse structure as recited in claim 7, wherein the top cap plate has an upper surface facing upward, and the protection member is suspended from the upper surface of the top cap plate.
9. The battery top cap with the external fuse structure as defined in any one of claims 1-6, wherein the protection section has a welding end, the welding end has a first welding surface facing the tab section, the tab section has a second welding surface facing the welding end, and the first welding surface is welded to the second welding surface.
10. The battery top cover with the external fuse structure as recited in any one of claims 1-6, wherein a mounting hole is formed in the top cover plate, an insulating sleeve is disposed in the mounting hole, a through hole is formed in the insulating sleeve, and the tab segment is inserted into the through hole of the insulating sleeve; the upper end of the insulating sleeve extends to the upper part 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 end of the insulating sleeve extends to the lower side of the top cover plate to form a lower sealing ring, and the lower sealing ring surrounds the periphery of the through hole and is pressed against the lower surface of the top cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921209825.9U CN210040385U (en) | 2019-07-29 | 2019-07-29 | Battery top cap of external fusing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921209825.9U CN210040385U (en) | 2019-07-29 | 2019-07-29 | Battery top cap of external fusing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210040385U true CN210040385U (en) | 2020-02-07 |
Family
ID=69350547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921209825.9U Withdrawn - After Issue CN210040385U (en) | 2019-07-29 | 2019-07-29 | Battery top cap of external fusing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210040385U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110299503A (en) * | 2019-07-29 | 2019-10-01 | 常州瑞德丰精密技术有限公司 | The battery cap of external fusing structure |
| WO2021217649A1 (en) * | 2020-04-30 | 2021-11-04 | 宁德时代新能源科技股份有限公司 | End cap assembly, secondary battery, battery pack, and powered device |
-
2019
- 2019-07-29 CN CN201921209825.9U patent/CN210040385U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110299503A (en) * | 2019-07-29 | 2019-10-01 | 常州瑞德丰精密技术有限公司 | The battery cap of external fusing structure |
| CN110299503B (en) * | 2019-07-29 | 2024-05-14 | 常州瑞德丰精密技术有限公司 | Battery top cover with external fusing structure |
| WO2021217649A1 (en) * | 2020-04-30 | 2021-11-04 | 宁德时代新能源科技股份有限公司 | End cap assembly, secondary battery, battery pack, and powered device |
| EP3968449A4 (en) * | 2020-04-30 | 2022-04-20 | Contemporary Amperex Technology Co., Limited | End cap assembly, secondary battery, battery pack, and powered device |
| US11362395B2 (en) | 2020-04-30 | 2022-06-14 | Contemporary Amperex Technology Co., Limited | End cover assembly, secondary battery, battery pack and electric device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200207 Effective date of abandoning: 20240514 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200207 Effective date of abandoning: 20240514 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |