CN210640323U - Lithium ion battery with waterproof function reinforced at joint - Google Patents
Lithium ion battery with waterproof function reinforced at joint Download PDFInfo
- Publication number
- CN210640323U CN210640323U CN201921417118.9U CN201921417118U CN210640323U CN 210640323 U CN210640323 U CN 210640323U CN 201921417118 U CN201921417118 U CN 201921417118U CN 210640323 U CN210640323 U CN 210640323U
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- China
- Prior art keywords
- electrode lug
- waterproof
- lithium ion
- ion battery
- winding type
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 23
- 229920006257 Heat-shrinkable film Polymers 0.000 claims abstract description 25
- 238000004804 winding Methods 0.000 claims abstract description 21
- 230000000712 assembly Effects 0.000 claims abstract description 10
- 238000000429 assembly Methods 0.000 claims abstract description 10
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920006300 shrink film Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004806 packaging method and process Methods 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
-
- 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
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a lithium ion battery with a joint reinforced waterproof function, which belongs to the field of lithium ion batteries, and the technical scheme is characterized in that the lithium ion battery comprises a coiled electrical core, wherein the upper part of the coiled electrical core is electrically connected with a PCB protection plate, and the outer rings of the coiled electrical core and the PCB protection plate are completely wrapped with a thermal shrinkage film; a positive electrode lug and a negative electrode lug, of which parts extend out of the thermal shrinkage film, are electrically welded on the winding type battery cell; the two waterproof assemblies are respectively sleeved on the positive electrode lug and the negative electrode lug, the outer wall part of each waterproof assembly is wrapped by a heat shrinkage film, and the conductive parts at one ends of the two waterproof assemblies, which are far away from the winding type battery cell, are respectively contacted with the positive electrode lug and the negative electrode lug so that the waterproof assemblies can conduct electricity. The problem of poor waterproof effect caused by large gaps at the joints of the positive electrode lug, the negative electrode lug and the heat-shrinkable film is solved; the problem of the positive pole ear, negative pole ear expose and take place the oxidation easily for a long time in the environment, cause the result of use decline is solved.
Description
Technical Field
The utility model relates to a lithium ion battery technical field particularly, relates to a lithium ion battery of waterproof function is strengthened to junction.
Background
At present, the lithium ion battery protection board easily causes short circuit of a circuit board in a rainwater or humid environment to influence the normal use of the battery, and even safety accidents caused by the failure of the protection function of the battery by the circuit board can be caused.
The lithium ion battery with the waterproof and moistureproof functions can be normally used in a rainwater humid environment without being influenced by a severe environment, and has wide application markets such as diving lighting equipment, low lighting equipment, outdoor monitoring equipment and the like, but the existing lithium ion battery has the following problems:
1. the joint of the lug and the heat-shrinkable film has a large gap, and the heat-shrinkable film is difficult to contact with the lug, so that the waterproof effect is poor;
2. the electrode lug is exposed to the environment and is easy to oxidize after being used for a long time, so that the using effect is reduced.
Therefore, the lithium ion battery with the waterproof function reinforced at the joint is provided.
Disclosure of Invention
A primary object of the present invention is to provide a lithium ion battery with a waterproof function at the junction to solve the above-mentioned problems of the background art.
In order to achieve the purpose, the utility model provides a lithium ion battery with a joint enhanced waterproof function, which comprises a coiled electric core, wherein the upper part of the coiled electric core is electrically connected with a PCB protection board, and the outer rings of the coiled electric core and the PCB protection board are completely wrapped with a thermal shrinkage film; a positive electrode lug and a negative electrode lug, of which parts extend out of the thermal shrinkage film, are electrically welded on the winding type battery cell; the two waterproof assemblies are respectively sleeved on the positive electrode lug and the negative electrode lug, the outer wall parts of the two waterproof assemblies are wrapped by thermal shrinkage films, and one ends of the two waterproof assemblies, which are far away from the winding type battery cell, are provided with conductive parts and are respectively contacted with the positive electrode lug and the negative electrode lug.
Further, a pit groove for accommodating the winding type battery cell is arranged on the heat shrinkage film.
Furthermore, the two pit grooves are symmetrically arranged with the central axis of the thermal shrinkage film, and the depth of each pit groove is half of the height of the winding type battery cell.
Further, coiling formula electricity core includes positive plate, negative plate and diaphragm, the diaphragm is located between positive plate and the negative plate to make positive plate and negative plate separate, the positive plate is connected with anodal ear electric welding, the negative plate is connected with negative pole ear electric welding.
Further, the waterproof assembly includes a sealing ring, a sleeve and a metal connector as a conductive portion,
the sealing rings are sleeved on the positive electrode lug and the negative electrode lug, and the outer ring is wrapped with a heat shrinkage film;
one end of the sleeve is fixedly connected with the sealing ring, and the other end of the sleeve is in threaded connection with the metal connector;
one end of the metal connector close to the sealing ring is in contact with the positive electrode lug and the negative electrode lug which penetrate through the sleeve, so that the metal connector can conduct electricity.
Further, the sleeve and the sealing ring are of an integrally formed structure.
Further, the outer wall of the sealing ring is of a wave-shaped structure.
Further, the heat-shrinkable film is a POF heat-shrinkable film.
Use the technical scheme of the utility model, beneficial effect is:
1. the waterproof assembly is arranged at the joint of the positive tab, the negative tab and the heat-shrinkable film, and the contact area of the positive tab, the negative tab and the heat-shrinkable film can be increased, so that the heat-shrinkable film subjected to heat-shrinkable treatment can be in close contact with the waterproof assembly, and the problems of large gaps at the joint of the positive tab, the negative tab and the heat-shrinkable film and poor waterproof effect are solved;
2. establish respectively through two waterproof component and establish anodal ear, on the negative pole ear, and outer wall portion wraps up there is the pyrocondensation membrane, make and stretch out the outer anodal ear of pyrocondensation membrane and negative pole ear be in encapsulated situation, and two waterproof component keep away from the one end conductive part of coiling formula electric core respectively with anodal ear, the negative pole ear contact, so that waterproof component can electrically conduct, thereby under the prerequisite that keeps can electrically conduct, anodal ear has been solved, the negative pole ear exposes and uses the easy oxidation that takes place for a long time in the environment, cause the problem that the result of use descends.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows an overall structure of the present invention;
fig. 2 shows a diagram of a winding type cell packaging structure of the present invention;
figure 3 shows a water-proof assembly structure of the present invention;
fig. 4 shows the internal structure diagram of the winding type battery cell of the present invention;
fig. 5 shows an enlarged view of fig. 4A of the present invention.
Wherein the figures include the following reference numerals:
10. a heat-shrinkable film; 11. a pit; 20. a winding type battery cell; 21. a PCB protection board; 22. a positive tab; 23. A negative tab; 30. a waterproof assembly; 31. a seal ring; 32. a sleeve; 33. a metal connector.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 5, the utility model provides a lithium ion battery with a joint enhanced waterproof function, which comprises a coiled electrical core 20, wherein the upper part of the coiled electrical core 20 is electrically connected with a PCB protection plate 21, and the outer rings of the coiled electrical core 20 and the PCB protection plate 21 are completely wrapped with a thermal shrinkage film 10; a positive electrode lug 22 and a negative electrode lug 23 which partially extend out of the thermal shrinkage film 10 are electrically welded on the winding type battery cell 20; and the two waterproof assemblies 30 are respectively sleeved on the positive electrode lug 22 and the negative electrode lug 23, the outer wall parts of the two waterproof assemblies 30 are wrapped by the thermal shrinkage film 10, and one ends of the two waterproof assemblies 30, which are far away from the winding type battery cell 20, are provided with conductive parts and are respectively contacted with the positive electrode lug 22 and the negative electrode lug 23.
By applying the technical scheme of the embodiment, a layer of heat-shrinkable film 11 is wrapped outside the battery, the film is shrunk through high-temperature film shrinking equipment, so that the heat-shrinkable film 11 tightly wraps the wound battery core 20 and the PCB protection plate 21, external water molecules can be effectively prevented from entering the battery, the waterproof component 30 is sleeved on the positive electrode lug 22 and the negative electrode lug 23, so that the waterproof component 30 is positioned at the joint of the positive electrode lug 22, the negative electrode lug 23 and the heat-shrinkable film 10, the contact area with the heat-shrinkable film 10 is increased through the arrangement of the waterproof component 30, and the heat-shrinkable film 10 subjected to heat-shrinking treatment can be tightly contacted with the waterproof component 30, so that the problems that the joint of the positive electrode lug 23, the negative electrode lug 23 and the heat-shrinkable film 10 is large in gap and the waterproof effect is;
wherein, waterproof component 30 wraps up anodal ear 22 and negative pole ear 23 for anodal ear 22 and negative pole ear 23 are in encapsulated situation, and two waterproof component 30 keep away from the one end inside wall of coiling formula electricity core 20 respectively with anodal ear 22, negative pole ear 23 contact, thereby under the prerequisite that keeps can electrically conduct, solved anodal ear 22, negative pole ear 23 and exposed and use the problem that the oxidation takes place easily for a long time in the environment, cause the result of use decline.
In this embodiment, the winding type battery cell 20 includes a positive plate, a negative plate and a diaphragm, the diaphragm is located between the positive plate and the negative plate to separate the positive plate from the negative plate, the positive plate is electrically welded to the positive tab 22, and the negative plate is electrically welded to the negative tab 23, so that the lithium ion battery can output current.
Optionally, the heat shrink film 10 is a POF heat shrink film.
Optionally, as shown in fig. 1, the heat-shrinkable film 10 is provided with a pit 11 for accommodating the winding-type battery cell 20.
Two pits 11 are symmetrically arranged around the central axis of the thermal shrinkage film 10, and the depth of each pit 11 is half of the height of the winding-type battery cell 20.
With the above structure, when the winding-type battery cell 20 is thick, the thermal shrinkage film 10 can be prevented from breaking due to the fact that the deformation amount of one side of the thermal shrinkage film 10 is too large to break through the deformation limit of the thermal shrinkage film 10.
As for the specific structure of the waterproof assembly 30, as shown in fig. 3, the waterproof assembly 30 includes a sealing ring 31, a sleeve 32 and a metal connector 33 as a conductive part, the sealing ring 31 is sleeved on the positive electrode tab 22 and the negative electrode tab 23, and the outer ring is wrapped by the heat shrinkage film 10; one end of the sleeve 32 is fixedly connected with the sealing ring 31, and the other end is fixedly connected with the metal connector 33; one end of the metal connector 33 near the sealing ring 31 contacts with the positive tab 22 and the negative tab 23 penetrating through the sleeve 32, so that the metal connector 33 can conduct electricity.
The joint of the metal connector 33 and the positive tab 22 and/or the negative tab 23 is bonded and fixed by waterproof glue, so that the overall waterproof effect of the device can be effectively avoided.
In this embodiment, sealing ring 31 and sleeve 32 cover are established on utmost point ear, be located utmost point ear and thermal shrinkage membrane 10's junction through sealing ring 31, thermal shrinkage membrane 10 that carries out the pyrocondensation processing can closely contact with sealing ring 31, thereby reach and prevent that moisture from getting into inside the battery from the gap of utmost point ear and thermal shrinkage membrane 10 junction, metallic interconnect head 33 and utmost point ear contact, thereby make utmost point ear can electrically conduct under airtight environment, and through metallic interconnect head 33 and sleeve 32 threaded connection, make metallic interconnect head 33 to dismantle, thereby when metallic interconnect head 33 is damaged, can change.
Alternatively, as shown in fig. 5, the outer wall of the sealing ring 31 is of a raised grain structure, and this structure can increase the contact area between the sealing ring 31 and the heat-shrinkable film 10, thereby effectively improving the waterproof effect.
Optionally, the sleeve 32 and the sealing ring 31 are of an integrally formed structure, so that the problem that water molecules contact with the right tab 22 and the left tab 23 due to untight connection between the sleeve 32 and the sealing ring 31 and the leakage danger is caused can be avoided.
From the above description, it can be seen that the specific using method and operation principle of the above-mentioned embodiments of the present invention are as follows: firstly, a layer of heat-shrinkable film 11 is wrapped outside the battery, the film is shrunk through high-temperature film shrinking equipment, so that the heat-shrinkable film 11 tightly wraps the winding type battery core 20 and the PCB protection plate 21, external water molecules can be prevented from entering the battery, then, the sealing ring 31 and the sleeve 32 are sleeved on the tab, the heat shrinkable film 10 subjected to heat shrinkage treatment can be tightly contacted with the sealing ring 31 through the sealing ring 31 being positioned at the joint of the tab and the heat shrinkable film 10, thereby preventing moisture from entering the battery from the gap at the joint of the tab and the thermal shrinkage film 10, then, the sleeve 32 wraps the tab, the metal connector 33 contacts with the tab, so that the tab can conduct electricity in a sealed environment, and is in threaded connection with the sleeve 32 through the metal connector 33, the metal connector 33 is detachable so that the metal connector 33 can be replaced when damaged.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a lithium ion battery of waterproof function is strengthened to junction which characterized in that: comprises that
The battery comprises a winding type battery cell (20), wherein the upper part of the winding type battery cell (20) is electrically connected with a PCB protection plate (21), and the outer rings of the winding type battery cell (20) and the PCB protection plate (21) are completely wrapped with a heat shrinkage film (10);
a positive electrode lug (22) and a negative electrode lug (23) of which parts extend out of the thermal shrinkage film (10) are welded on the winding type battery cell (20);
the two waterproof assemblies (30) are respectively sleeved on the positive electrode lug (22) and the negative electrode lug (23), the outer wall part of each waterproof assembly (30) is wrapped by a thermal shrinkage film (10), and one end, far away from the winding type battery cell (20), of each waterproof assembly (30) is provided with a conductive part and is respectively in contact with the positive electrode lug (22) and the negative electrode lug (23).
2. The lithium ion battery with the waterproof function reinforced at the joint according to claim 1, wherein: and the heat-shrinkable film (10) is provided with a pit (11) for accommodating the winding type battery cell (20).
3. The lithium ion battery with the waterproof function reinforced at the joint according to claim 2, wherein: the two pit grooves (11) are symmetrically arranged with the central axis of the thermal shrinkage film (10), and the depth of the pit grooves (11) is half of the height of the winding type battery core (20).
4. The lithium ion battery with the waterproof function reinforced at the joint according to claim 1, wherein: the winding type battery cell (20) comprises a positive plate, a negative plate and a diaphragm, wherein the diaphragm is located between the positive plate and the negative plate so that the positive plate and the negative plate are separated, the positive plate is in electric welding connection with a positive lug (22), and the negative plate is in electric welding connection with a negative lug (23).
5. The lithium ion battery with the waterproof function reinforced at the joint according to claim 1, wherein: the waterproof assembly (30) comprises a sealing ring (31), a sleeve (32) and a metal connector (33) as a conductive part,
the sealing ring (31) is sleeved on the positive electrode lug (22) and the negative electrode lug (23), and the outer ring is wrapped by the heat shrinkage film (10);
one end of the sleeve (32) is fixedly connected with the sealing ring (31), and the other end of the sleeve is in threaded connection with the metal connector (33);
one end of the metal connector (33) close to the sealing ring (31) is in contact with the positive lug (22) and the negative lug (23) penetrating through the sleeve (32), so that the metal connector (33) can conduct electricity.
6. The lithium ion battery with the waterproof function strengthened at the joint according to claim 5, is characterized in that: the sleeve (32) and the sealing ring (31) are of an integrally formed structure.
7. The lithium ion battery with the waterproof function strengthened at the joint according to claim 5, is characterized in that: the outer wall of the sealing ring (31) is of a wave-shaped structure.
8. The lithium ion battery with the waterproof function strengthened at the joint according to any one of claims 1 to 7, is characterized in that: the heat-shrinkable film (10) is a POF (polyester pre-oriented film) heat-shrinkable film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921417118.9U CN210640323U (en) | 2019-08-29 | 2019-08-29 | Lithium ion battery with waterproof function reinforced at joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921417118.9U CN210640323U (en) | 2019-08-29 | 2019-08-29 | Lithium ion battery with waterproof function reinforced at joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210640323U true CN210640323U (en) | 2020-05-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921417118.9U Active CN210640323U (en) | 2019-08-29 | 2019-08-29 | Lithium ion battery with waterproof function reinforced at joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210640323U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113067070A (en) * | 2021-03-17 | 2021-07-02 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
| WO2023065193A1 (en) * | 2021-10-20 | 2023-04-27 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, electrical device, and method and equipment for manufacturing battery cell |
-
2019
- 2019-08-29 CN CN201921417118.9U patent/CN210640323U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113067070A (en) * | 2021-03-17 | 2021-07-02 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
| CN113067070B (en) * | 2021-03-17 | 2024-06-07 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
| WO2023065193A1 (en) * | 2021-10-20 | 2023-04-27 | 宁德时代新能源科技股份有限公司 | Battery cell, battery, electrical device, and method and equipment for manufacturing battery cell |
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| GR01 | Patent grant | ||
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Effective date of registration: 20231226 Granted publication date: 20200529 |