CN206388744U - A kind of sealed cover plate structure of lithium battery - Google Patents
A kind of sealed cover plate structure of lithium battery Download PDFInfo
- Publication number
- CN206388744U CN206388744U CN201720079875.4U CN201720079875U CN206388744U CN 206388744 U CN206388744 U CN 206388744U CN 201720079875 U CN201720079875 U CN 201720079875U CN 206388744 U CN206388744 U CN 206388744U
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- Prior art keywords
- ceramic body
- pole
- substrate
- sealing
- lithium battery
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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
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- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
A kind of sealed cover plate structure of lithium battery, including the negative pole pole and Positive Poles being arranged on substrate, in addition to the first ceramic body and the second ceramic body, negative pole pole are integrated by the first ceramic body with substrate interference fit；Positive Poles are integrated by the second ceramic body with substrate interference fit.Also include cathode pole piece and anode pole piece, the first ceramic body is set in the middle part of negative pole pole, and cathode pole piece at the top of negative pole pole with being welded as a whole, and the second ceramic body is set at the top of the middle part of Positive Poles, anode pole piece and Positive Poles and is welded as a whole.Also include the first sealing insulator and the 3rd sealing insulator, the first sealing insulator is set in the top of negative pole pole and is crimped on the side of substrate, the first detent is provided with the first sealing insulator, cathode pole piece is embedded in the first detent.The characteristics of the utility model has good insulation preformance, technique is simple.
Description
Technical field
The utility model is related to a kind of sealed cover plate structure of lithium battery.
Background technology
At present, the sealing property of battery cover board affects the security performance of whole battery.In order to solve sealing property, market
On mostly use organic sealing ring, such as PFA, polyethylene, fluorubber, while being also used as sealing material using metallized ceramic
Material.But, all there is pole top and the on-insulated hidden danger of plate body in both sealing means.In order to solve potential safety hazard, generally
Meeting placing ceramic grain between pole and plate body, or pass through injection molding manner one layer of insulating organic material of injection.But, both
All there is complex procedures, cost height in mode, injection pressure is big in addition, and the intensity to sealing surface produces certain tension force, makes for a long time
During, sealing-in surface intensity may be tired, causes air-tightness to decline, and cell internal pressure is big, the wind revealed from pole position
Danger, the life-span of battery is affected.
Utility model content
The closure that the purpose of this utility model aims to provide the simple lithium battery of a kind of good insulation preformance, technique is hardened
Structure, to overcome weak point of the prior art.
A kind of sealed cover plate structure of the lithium battery designed by this purpose, including the negative pole pole that is arranged on substrate and just
Pole pole, its architectural feature is also to include the first ceramic body and the second ceramic body, and negative pole pole passes through the first ceramic body and substrate
Interference fit is integrated；Positive Poles are integrated by the second ceramic body with substrate interference fit.
Further, the sealed cover plate structure of described lithium battery, in addition to cathode pole piece and anode pole piece, the first ceramic body
The middle part of negative pole pole is set in, cathode pole piece at the top of negative pole pole with being welded as a whole, and the second ceramic body is set in positive pole
It is welded as a whole at the top of the middle part of pole, anode pole piece and Positive Poles.
Further, the sealed cover plate structure of described lithium battery, in addition to the first sealing insulator and the 3rd sealed insulation
Part, the first sealing insulator is set in the top of negative pole pole and is crimped on the side of substrate, is set on the first sealing insulator
There is the first detent, cathode pole piece is embedded in the first detent；3rd sealing insulator is set in the upper of Positive Poles
The 3rd detent is provided with portion and the side for being crimped on substrate, the 3rd sealing insulator, anode pole piece is embedded fixed the 3rd
In the groove of position.
Further, the sealed cover plate structure of described lithium battery, in addition to the second sealing insulator and the 4th sealed insulation
Part, the second sealing insulator be set in the middle and lower part of negative pole pole and be crimped on the opposite side of substrate and negative pole pole bottom it
Between, the second detent is provided with the second sealing insulator, the bottom of negative pole pole is embedded in the second detent；Second
The inwall of sealing insulator is resisted against on the outer wall of the first ceramic body；4th sealing insulator is set in the middle and lower part of Positive Poles
And be crimped between the opposite side of substrate and the bottom of Positive Poles, the 4th detent is provided with the 4th sealing insulator,
Positive Poles bottom is embedded in the 4th detent；The inwall of 4th sealing insulator is resisted against the outer wall of the second ceramic body
On.
Further, the sealed cover plate structure of described lithium battery, in addition to the first sealing ring and the second sealing ring, first is close
Seal is set in the bottom of the first ceramic body and is crimped between substrate, negative pole pole and the second sealing insulator；Second sealing
Snare is located at the bottom of the second ceramic body and is crimped between substrate, Positive Poles and the 4th sealing insulator.
Further, the first centre bore for inserting negative pole pole, the second ceramic body are provided with first ceramic body
On be provided with the second centre bore for inserting Positive Poles, the first centre bore and the second centre bore are respectively circular hole or ellipse
Hole；Substrate is metal substrate.
Further, first ceramic body and the second ceramic body are in inverted T-shaped respectively.
Further, it is separately provided for inserting the first pilot hole of the first ceramic body on the substrate and for inserting the
Second pilot hole of two ceramic bodies.
Further, first ceramic body and the second ceramic body are in inverted T-shaped respectively.
A kind of preparation method of the sealed cover plate structure of lithium battery, comprises the following steps：
Step one, the first ceramic body is inserted into the first pilot hole of substrate first, the second ceramic body is inserted into base
In second pilot hole of plate；
Step 2, high-tension current is passed through towards substrate, by high-tension current so that substrate moment thermal expansion, so that substrate
It is integrated respectively with tightly swollen after the first ceramic body, the second ceramic body interference fit；
Step 3, the first sealing ring is set in the bottom of the first ceramic body, and the second sealing ring is set in into the second ceramics
The bottom of body；
Negative pole pole, is then inserted into the first centre bore of the first ceramic body, Positive Poles is inserted into by step 4
In second centre bore of the second ceramic body；
Step 5, by Laser Welding by cathode pole piece with being welded as a whole at the top of negative pole pole, by anode pole piece and just
It is welded as a whole at the top of the pole of pole；Obtain treating moulding；
Step 6, will treat that moulding loads in mould, carries out high-pressure injection moulding to the both sides of substrate, respectively obtains the first sealing
Insulating part, the second sealing insulator, the 3rd sealing insulator and the 4th sealing insulator, finally obtain integrally formed lithium battery
Sealed cover plate structure.
The first ceramic body and the second ceramic body in the utility model, negative pole pole pass through the first ceramic body and substrate interference
With being integrated；Positive Poles are integrated by the second ceramic body with substrate interference fit, are crossed high-tension current and are caused substrate moment
Thermal expansion, so that substrate is integrated with tightly swollen after the first ceramic body, the second ceramic body interference fit respectively；Make full use of aluminium
The plasticity of substrate makes the first ceramic body, the second ceramic body are complete to be closely integrated with aluminium base assembling.
The utility model passes through aluminium base and the first ceramic body, the second ceramic body interference fit, cathode pole piece and negative pole pole
It is welded as a whole, is welded as a whole at the top of anode pole piece and Positive Poles at the top of post so that the inside and outside connection conducting of lithium battery；
First ceramic body, the second ceramic body have good insulation properties and high temperature resistant chemical stability, it is ensured that the security performance of battery, prolong
The service life of long lithium battery.
In summary, the characteristics of the utility model has good insulation preformance, technique is simple.
Brief description of the drawings
Fig. 1 is the schematic front view of the embodiment of the utility model one.
Fig. 2 is A-A in Fig. 1 to cut-away illustration.
Fig. 3 is enlarged diagram at the B in Fig. 2.
Fig. 4 is Fig. 1 schematic rear view.
In figure：1 is cathode pole piece, and 2 be the first sealing insulator, and 3 be substrate, and 4 be the second sealing insulator, and 5 be first
Ceramic body, 6 be negative pole pole, and 7 be the first sealing ring, and 8 be anode pole piece, and 9 be the 3rd sealing insulator, and 10 be that the 4th sealing is exhausted
Edge part, 11 be the second ceramic body, and 12 be Positive Poles, and 13 be the second sealing ring.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to the utility model.
Referring to Fig. 1-Fig. 4, the sealed cover plate structure of this lithium battery, including negative pole pole 6 and positive pole on the substrate 3 are set
Pole 12, in addition to the first ceramic body 5 and the second ceramic body 11, negative pole pole 6 are matched somebody with somebody by the first ceramic body 5 with the interference of substrate 3
It is integrated；Positive Poles 12 are integrated by the second ceramic body 11 with the interference fit of substrate 3.
In the present embodiment, the first ceramic body 5 and the second ceramic body 11 can be using oxide, nitride or carbide potteries
Porcelain.First ceramic body 5 and the second ceramic body 11 have smooth outer surface respectively.
The sealed cover plate structure of described lithium battery, in addition to cathode pole piece 1 and anode pole piece 8, the first ceramic body 5 are arranged
At the middle part of negative pole pole 6, the top of cathode pole piece 1 and negative pole pole 6 is welded as a whole, and the second ceramic body 11 is set in positive pole
The middle part of pole 12, anode pole piece 8 and the top of Positive Poles 12 are welded as a whole.
The sealed cover plate structure of described lithium battery, in addition to the first sealing insulator 2 and the 3rd sealing insulator 9, the
One sealing insulator 2 is set in the top of negative pole pole 6 and is crimped on the side of substrate 3, is provided with the first sealing insulator 2
First detent, cathode pole piece 1 is embedded in the first detent；3rd sealing insulator 9 is set in Positive Poles 12
The 3rd detent is provided with top and the side for being crimped on substrate 3, the 3rd sealing insulator 9, anode pole piece 8 is embedded
In three detents.
The sealed cover plate structure of described lithium battery, in addition to the second sealing insulator 4 and the 4th sealing insulator 10, the
Two sealing insulators 4 be set in the middle and lower part of negative pole pole 6 and be crimped on the opposite side of substrate 3 and negative pole pole 6 bottom it
Between, the second detent is provided with the second sealing insulator 4, the bottom of negative pole pole 6 is embedded in the second detent；The
The inwall of two sealing insulators 4 is resisted against on the outer wall of the first ceramic body 5；4th sealing insulator 10 is set in Positive Poles 12
Middle and lower part and it is crimped between the bottom of the opposite side of substrate 3 and Positive Poles 12, is provided with the 4th sealing insulator 10
Four detents, the bottom of Positive Poles 12 is embedded in the 4th detent；The inwall of 4th sealing insulator 10 is resisted against
On the outer wall of two ceramic bodies 11.
The sealed cover plate structure of described lithium battery, in addition to the first sealing ring 7 and the second sealing ring 13, the first sealing ring
7 are set in the bottom of the first ceramic body 5 and are crimped between substrate 3, the sealing insulator 4 of negative pole pole 6 and second；Second sealing
Circle 13 is set in the bottom of the second ceramic body 11 and is crimped between substrate 3, the sealing insulator 10 of Positive Poles 12 and the 4th.
It is provided with the first centre bore for inserting negative pole pole 6, the second ceramic body 11 and sets on first ceramic body 5
The second centre bore for inserting Positive Poles 12 is equipped with, the first centre bore and the second centre bore are respectively circular hole or elliptical aperture；
Substrate 3 is metal substrate.In the present embodiment, metal substrate can select aluminium base or copper base.
The ceramic body 11 of first ceramic body 5 and second is in inverted T-shaped respectively.
It is separately provided for inserting the first pilot hole of the first ceramic body 5 on the substrate 3 and is made pottery for inserting second
Second pilot hole of porcelain body 11.
The ceramic body 11 of first ceramic body 5 and second is in inverted T-shaped respectively.
The first pilot hole, the second pilot hole on the first above-mentioned ceramic body 5 and the external diameter and substrate 3 of the second ceramic body 11
Internal diameter size size according to can actually adjust.
A kind of preparation method of the sealed cover plate structure of lithium battery, comprises the following steps：
Step one, the first ceramic body 5 is inserted into the first pilot hole of substrate 3 first, the second ceramic body 11 is inserted
In the second pilot hole of substrate 3；
Step 2, the first sealing ring 7 is set in the bottom of the first ceramic body 5, and the second sealing ring 13 is set in into second
The bottom of ceramic body 11；
Negative pole pole 6, is then inserted into the first centre bore of the first ceramic body 5, Positive Poles 12 is inserted by step 3
In the second centre bore of the second ceramic body 11；
Step 4, high-tension current is passed through towards substrate 3, by high-tension current so that substrate 3 moment thermal expansion, so that base
Plate 3 is integrated with tightly swollen after the first ceramic body 5, the second ceramic body 11 interference fit respectively；
The top of cathode pole piece 1 and negative pole pole 6, is welded as a whole by step 5 by Laser Welding, by anode pole piece 8 with
The top of Positive Poles 12 is welded as a whole；Obtain treating moulding；
Step 6, will treat that moulding loads in mould, high-pressure injection moulding sealing is carried out to the both sides of substrate 3, respectively obtain the
One sealing insulator 2, the second sealing insulator 4, the 3rd sealing insulator 9 and the 4th sealing insulator 10, finally obtain one
The sealed cover plate structure of the lithium battery of shaping.
General principle of the present utility model and principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the utility model spirit and scope are not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed the utility model.The utility model
Claimed scope is by appended claims and its equivalent thereof.
Claims (9)
1. a kind of sealed cover plate structure of lithium battery, including the negative pole pole (6) and Positive Poles being arranged on substrate (3)
(12), it is characterized in that also including the first ceramic body (5) and the second ceramic body (11),
Negative pole pole (6) is integrated by the first ceramic body (5) with substrate (3) interference fit；
Positive Poles (12) are integrated by the second ceramic body (11) with substrate (3) interference fit.
2. the sealed cover plate structure of lithium battery according to claim 1, it is characterized in that also including cathode pole piece (1) and positive pole
Pole piece (8),
First ceramic body (5) is set in the middle part of negative pole pole (6), and cathode pole piece (1) at the top of negative pole pole (6) with being welded as
One,
Second ceramic body (11) is set in the middle part of Positive Poles (12), and anode pole piece (8) and the top of Positive Poles (12) are welded
It is connected in one.
3. the sealed cover plate structure of lithium battery according to claim 2, it is characterized in that also including the first sealing insulator (2)
With the 3rd sealing insulator (9),
First sealing insulator (2) is set in the top of negative pole pole (6) and is crimped on the side of substrate (3), and the first sealing is exhausted
The first detent is provided with edge part (2), cathode pole piece (1) is embedded in the first detent；
3rd sealing insulator (9) is set in the top of Positive Poles (12) and is crimped on the side of substrate (3), and the 3rd sealing is exhausted
The 3rd detent is provided with edge part (9), anode pole piece (8) is embedded in the 3rd detent.
4. the sealed cover plate structure of lithium battery according to claim 2, it is characterized in that also including the second sealing insulator (4)
With the 4th sealing insulator (10),
Second sealing insulator (4) is set in the middle and lower part of negative pole pole (6) and is crimped on opposite side and the negative pole pole of substrate (3)
Between the bottom of post (6), the second detent is provided with the second sealing insulator (4), the bottom of negative pole pole (6) is embedded
In second detent；The inwall of second sealing insulator (4) is resisted against on the outer wall of the first ceramic body (5)；
4th sealing insulator (10) is set in Positive Poles (12) middle and lower part and is crimped on opposite side and the positive pole pole of substrate (3)
Between the bottom of post (12), the 4th detent is provided with the 4th sealing insulator (10), Positive Poles (12) bottom is embedded
In the 4th detent；The inwall of 4th sealing insulator (10) is resisted against on the outer wall of the second ceramic body (11).
5. the sealed cover plate structure of lithium battery according to claim 4, it is characterized in that also including the first sealing ring (7) and the
Two sealing rings (13),
First sealing ring (7) is set in the bottom of the first ceramic body (5) and to be crimped on substrate (3), negative pole pole (6) and second close
Seal between insulating part (4)；
Second sealing ring (13) is set in the bottom of the second ceramic body (11) and is crimped on substrate (3), Positive Poles (12) and the
Between four sealing insulators (10).
6. the sealed cover plate structure of lithium battery according to claim 2, it is characterized in that being set on first ceramic body (5)
Have and be provided with the first centre bore for inserting negative pole pole (6), the second ceramic body (11) for inserting Positive Poles (12)
The second centre bore, the first centre bore and the second centre bore are respectively circular hole or elliptical aperture；Substrate (3) is metal substrate.
7. the sealed cover plate structure of lithium battery according to claim 2, it is characterized in that first ceramic body (5) and second
Ceramic body (11) is in inverted T-shaped respectively.
8. the sealed cover plate structure of lithium battery according to claim 1, it is characterized in that being respectively arranged with the substrate (3)
The second pilot hole for the first pilot hole of the first ceramic body of inserting (5) and for inserting the second ceramic body (11).
9. the sealed cover plate structure of lithium battery according to claim 1, it is characterized in that first ceramic body (5) and second
Ceramic body (11) is in inverted T-shaped respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720079875.4U CN206388744U (en) | 2017-01-19 | 2017-01-19 | A kind of sealed cover plate structure of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720079875.4U CN206388744U (en) | 2017-01-19 | 2017-01-19 | A kind of sealed cover plate structure of lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206388744U true CN206388744U (en) | 2017-08-08 |
Family
ID=59495003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720079875.4U Expired - Fee Related CN206388744U (en) | 2017-01-19 | 2017-01-19 | A kind of sealed cover plate structure of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206388744U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784450A (en) * | 2017-01-19 | 2017-05-31 | 佛山市康荣精细陶瓷有限公司 | A kind of sealed cover plate structure of lithium battery and preparation method thereof |
| CN115513579A (en) * | 2022-10-21 | 2022-12-23 | 武汉中金泰富新能源科技有限公司 | Power battery cover plate and power battery |
-
2017
- 2017-01-19 CN CN201720079875.4U patent/CN206388744U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784450A (en) * | 2017-01-19 | 2017-05-31 | 佛山市康荣精细陶瓷有限公司 | A kind of sealed cover plate structure of lithium battery and preparation method thereof |
| CN115513579A (en) * | 2022-10-21 | 2022-12-23 | 武汉中金泰富新能源科技有限公司 | Power battery cover plate and power battery |
| CN115513579B (en) * | 2022-10-21 | 2023-12-01 | 武汉中金泰富新能源科技有限公司 | Power battery cover plate and power battery |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170808 Termination date: 20220119 |