CN212323087U - Cylindrical lithium ion battery - Google Patents
Cylindrical lithium ion battery Download PDFInfo
- Publication number
- CN212323087U CN212323087U CN202021075573.8U CN202021075573U CN212323087U CN 212323087 U CN212323087 U CN 212323087U CN 202021075573 U CN202021075573 U CN 202021075573U CN 212323087 U CN212323087 U CN 212323087U
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- lower extreme
- lithium ion
- outside
- extreme fixedly
- 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.)
- Expired - Fee Related
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 21
- 239000012634 fragment Substances 0.000 claims abstract description 12
- 239000004831 Hot glue Substances 0.000 claims abstract description 8
- 230000035939 shock Effects 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 7
- 239000003792 electrolyte Substances 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 8
- 238000013016 damping Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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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
- 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
- Secondary Cells (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model relates to a lithium ion battery technical field, especially a cylindrical lithium ion battery, including interior casing and positive terminal, interior casing upper end inboard is equipped with the positive terminal, the positive terminal outside fixedly connected with top cap, the top cap outside and interior casing fixed connection, positive terminal lower extreme fixedly connected with positive temperature coefficient thermistor, the positive temperature coefficient thermistor outside and top cap fixed connection, positive temperature coefficient thermistor lower extreme fixedly connected with explosion-proof shell fragment, explosion-proof shell fragment lower extreme fixedly connected with bottom plate; the utility model discloses in, through the explosion-proof shell fragment, bottom plate, toper gas pocket, kicking block, shock attenuation piece, shell body and the sealed hot melt adhesive that sets up, can realize the guard action to the battery, can improve the sealed effect of battery simultaneously, prevent that the inside electrolyte of battery from leaking.
Description
Technical Field
The utility model relates to a lithium ion battery technical field specifically is a cylindrical lithium ion battery.
Background
The lithium ion battery is a secondary battery, which mainly depends on the movement of lithium ions between a positive electrode and a negative electrode to work, has the advantages of large energy density, high average output voltage, small self-discharge, excellent cycle performance, quick charge and discharge, high charging efficiency, large output power, long service life and no toxic and harmful substances, is called as a green battery, and is widely applied due to good service performance.
Lithium ion battery is under the circumstances of overcharging, the inside temperature of battery can sharply rise, and the inside gas that appears of battery leads to its internal pressure to increase, at present, the relief valve is installed mostly to the lithium ion battery who uses in the market, in order to prevent the battery phenomenon of explosion at the overcharge in-process, but its structure is comparatively complicated, it is comparatively inconvenient during the use, and ordinary lithium cell does not possess shockproof effect, when receiving great vibrations or jolting, the inside electrolyte of battery appears leaking the damage that leads to the battery easily, the event is to the above-mentioned problem proposing a cylindrical lithium ion battery.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cylindrical lithium ion battery to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a cylindrical lithium ion battery, includes interior casing and positive terminal, interior casing upper end inboard is equipped with the positive terminal, positive terminal outside fixedly connected with top cap, the top cap outside and interior casing fixed connection, positive terminal lower extreme fixedly connected with positive temperature coefficient thermistor, the positive temperature coefficient thermistor outside and top cap fixed connection, the explosion-proof shell fragment of positive temperature coefficient thermistor lower extreme fixedly connected with, explosion-proof shell fragment lower extreme fixedly connected with bottom plate.
Preferably, the bottom plate lower extreme fixedly connected with anodal pin, anodal pin lower extreme fixedly connected with battery rolls up the core, the battery rolls up the core outside and interior casing fixed connection, battery rolls up core lower extreme fixedly connected with negative pole pin, negative pole pin lower extreme fixedly connected with negative pole end, the negative pole end outside and interior casing fixed connection.
Preferably, the middle part of the upper end of the bottom plate is provided with a conical air hole, and the inner side of the conical air hole is connected with a top block in a sliding manner.
Preferably, the outer side of the inner shell is fixedly connected with a damping sheet, the outer side of the damping sheet is provided with an outer shell, and the inner side of the outer shell is fixedly connected with the inner shell.
Preferably, the inner side of the upper end of the outer shell is fixedly connected with the positive electrode end, and a sealing hot melt adhesive is filled between the outer shell and the positive electrode end.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in, through the explosion-proof shell fragment, the bottom plate, toper gas pocket and the kicking block that set up, when lithium ion battery overcharged, battery roll up the internal temperature of core and rise and appear a large amount of gases, lead to the battery internal pressure to rise, positive temperature coefficient thermistor is along with the temperature rise resistance grow, can play the effect of protection circuit, when positive temperature coefficient thermistor can't regulate and control, the gas inflation promotes the kicking block, the kicking block upwards slides in toper gas pocket and promotes explosion-proof shell fragment, thereby make explosion-proof shell fragment and bottom plate disconnection, thereby can break the electric current, thereby realize the guard action to the battery;
2. the utility model discloses in, through shock attenuation piece, shell body and the sealed hot melt adhesive that sets up, the shell body outside including the shock attenuation piece is wave evenly distributed can absorb the kinetic energy when shaking to the protection battery, it has sealed hot melt adhesive to fill in the gap between shell body and the positive terminal and the interior casing, and the sealed effect of battery can be improved in this kind of setting, prevents that the inside electrolyte of battery from leaking.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural diagram of a portion a of fig. 1 according to the present invention.
In the figure: 1-inner shell, 2-positive terminal, 3-top cover, 4-positive temperature coefficient thermistor, 5-explosion-proof shrapnel, 6-bottom plate, 7-positive terminal, 8-battery roll core, 9-negative terminal, 10-negative terminal, 11-conical air hole, 12-top block, 13-damping sheet, 14-outer shell and 15-sealing hot melt adhesive.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution:
the utility model provides a cylindrical lithium ion battery, includes interior casing 1 and positive terminal 2, 1 upper end inboard of interior casing is equipped with positive terminal 2, 2 outside fixedly connected with top caps 3 of positive terminal, the top cap 3 outside and interior casing 1 fixed connection, 2 lower extreme fixedly connected with positive temperature coefficient thermistor 4 of positive terminal, 4 outsides of positive temperature coefficient thermistor and top cap 3 fixed connection, the explosion-proof shell fragment 5 of 4 lower extreme fixedly connected with of positive temperature coefficient thermistor, 5 lower extreme fixedly connected with bottom plates 6 of explosion-proof shell fragment.
The lower end of the bottom plate 6 is fixedly connected with an anode pin 7, the lower end of the anode pin 7 is fixedly connected with a battery roll core 8, the outer side of the battery roll core 8 is fixedly connected with the inner shell 1, the lower end of the battery roll core 8 is fixedly connected with a cathode pin 9, the lower end of the cathode pin 9 is fixedly connected with a cathode end 10, the outer side of the cathode end 10 is fixedly connected with the inner shell 1, the middle part of the upper end of the bottom plate 6 is provided with a conical air hole 11, the inner side of the conical air hole 11 is slidably connected with a top block 12, when the temperature in the inner shell 1 is overhigh, the gas expands to push the top block 12, the top block 12 pushes the explosion-proof elastic sheet 5, thereby the explosion-proof elastic sheet 5 is disconnected with the bottom plate 6, thereby the current can be cut off, the outer side of the inner shell 1, the inboard and positive terminal 2 fixed connection in shell body 14 upper end, and it has sealed hot melt adhesive 15 to fill between shell body 14 and the positive terminal 2, and the sealed effect of battery can be improved to this kind of setting, prevents that the inside electrolyte of battery from leaking.
The working process is as follows: when the lithium ion battery is overcharged, the temperature in the battery winding core 8 rises and a large amount of gas appears, so that the internal pressure of the battery rises, the resistance value of the positive temperature coefficient thermistor 4 becomes larger along with the rise of the temperature, can play a role of protecting a circuit, when the positive temperature coefficient thermistor 4 cannot be regulated and controlled, the gas expands to push the top block 12, the top block 12 slides upwards in the conical air hole 11 to push the explosion-proof elastic sheet 5, thereby disconnecting the explosion-proof elastic sheet 5 from the bottom plate 6, and further breaking the current, thereby realizing the protection effect on the battery, the shock absorbing sheets 13 are evenly distributed on the outer side of the inner shell 1 in a wave shape, can absorb the kinetic energy during the shock, therefore, the battery is protected, and the sealing hot melt adhesive 15 is filled in the gap between the outer shell 14 and the positive electrode terminal 2 and the inner shell 1, so that the sealing effect of the battery can be improved, and the electrolyte inside the battery is prevented from leaking.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A cylindrical lithium ion battery comprises an inner shell (1) and a positive terminal (2), and is characterized in that: interior casing (1) upper end inboard is equipped with positive terminal (2), positive terminal (2) outside fixedly connected with top cap (3), top cap (3) outside and interior casing (1) fixed connection, positive terminal (2) lower extreme fixedly connected with positive temperature coefficient thermistor (4), positive temperature coefficient thermistor (4) outside and top cap (3) fixed connection, the explosion-proof shell fragment (5) of positive temperature coefficient thermistor (4) lower extreme fixedly connected with, explosion-proof shell fragment (5) lower extreme fixedly connected with bottom plate (6).
2. The cylindrical lithium ion battery according to claim 1, wherein: bottom plate (6) lower extreme fixedly connected with anodal pin (7), anodal pin (7) lower extreme fixedly connected with battery rolls up core (8), the battery rolls up core (8) outside and interior casing (1) fixed connection, the battery rolls up core (8) lower extreme fixedly connected with negative pole pin (9), negative pole pin (9) lower extreme fixedly connected with negative pole end (10), negative pole end (10) outside and interior casing (1) fixed connection.
3. The cylindrical lithium ion battery according to claim 1, wherein: the middle part of the upper end of the bottom plate (6) is provided with a conical air hole (11), and the inner side of the conical air hole (11) is connected with a top block (12) in a sliding manner.
4. The cylindrical lithium ion battery according to claim 1, wherein: interior casing (1) outside fixedly connected with shock attenuation piece (13), the shock attenuation piece (13) outside is equipped with shell body (14), shell body (14) inboard and interior casing (1) fixed connection.
5. The cylindrical lithium ion battery according to claim 4, wherein: the inner side of the upper end of the outer shell (14) is fixedly connected with the positive electrode end (2), and a sealing hot melt adhesive (15) is filled between the outer shell (14) and the positive electrode end (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021075573.8U CN212323087U (en) | 2020-06-13 | 2020-06-13 | Cylindrical lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021075573.8U CN212323087U (en) | 2020-06-13 | 2020-06-13 | Cylindrical lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212323087U true CN212323087U (en) | 2021-01-08 |
Family
ID=74026115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021075573.8U Expired - Fee Related CN212323087U (en) | 2020-06-13 | 2020-06-13 | Cylindrical lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212323087U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023070290A1 (en) * | 2021-10-25 | 2023-05-04 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, electrical device, and method and device for fabricating battery cell |
| WO2024192992A1 (en) * | 2023-03-17 | 2024-09-26 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electrical device |
-
2020
- 2020-06-13 CN CN202021075573.8U patent/CN212323087U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023070290A1 (en) * | 2021-10-25 | 2023-05-04 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, electrical device, and method and device for fabricating battery cell |
| WO2024192992A1 (en) * | 2023-03-17 | 2024-09-26 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, and electrical device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |