CN208226006U - Secondary cell top cover and its secondary cell - Google Patents
Secondary cell top cover and its secondary cell Download PDFInfo
- Publication number
- CN208226006U CN208226006U CN201820726953.XU CN201820726953U CN208226006U CN 208226006 U CN208226006 U CN 208226006U CN 201820726953 U CN201820726953 U CN 201820726953U CN 208226006 U CN208226006 U CN 208226006U
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- CN
- China
- Prior art keywords
- coping plate
- pole
- secondary cell
- top cover
- groove
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 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
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- Secondary Cells (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides a kind of secondary cell top cover, it include: coping plate and the first electrode unit for being set to coping plate, second electrode unit and rotating sheet, first electrode unit includes the first pole and the resistance for being set to the first pole, first pole is electrically connected by resistance with coping plate, second electrode unit includes the second pole and the conductive sheet that is electrically connected with the second pole, second pole and coping plate insulation are assembled, rotating sheet is electrically connected coping plate, conductive sheet is located at the top of rotating sheet, first insulating part is set between conductive sheet and coping plate, adhesive is equipped between coping plate and the first insulating part.Adhesive is equipped between the coping plate of the utility model and the first insulating part, it can avoid when carrying out injecting electrolytic solution, electrolyte penetrates on rotating sheet from the gap between the first insulating part and coping plate and influences the overturning sensitivity of rotating sheet and short-circuit resistance is caused to become larger.
Description
Technical field
The utility model relates to energy storage instrument field more particularly to a kind of secondary cell top covers and its secondary cell.
Background technique
The driving power of modern society, more and more electric tools and the new energy vehicles is towards high capacity, Gao An
The direction of full property is developed, and battery is widely used in electric tool and the new energy vehicles with good characteristics such as its high capacity
In.These batteries should also have good safety to can be only achieved the standard used and meet people other than with high capacity
Demand.
In order to guarantee the safety of secondary cell, rotating sheet is installed on some battery caps in the prior art, and pass through
Resistance is set and is electrically connected first electrode and coping plate, thus in battery because overcharging or electrolyte reacts equal accident due to leads to two
When primary cell air pressure inside is more than preset value, rotating sheet carries out overturning and is electrically connected with second electrode, by the movement of rotating sheet with
The electrical connection of resistance, thus extrinsic current can be formed between first electrode, coping plate and second electrode, stop overcharging, pass through
Resistance slowly cross flow heat dissipation the energy inside secondary cell is released, thus will not overcharge, is on fire, explosion etc. danger
Danger, to improve the security performance of secondary cell.
In order to guarantee beauty and prevent conductive sheet from contacting with coping plate, it will usually be arranged between conductive sheet and coping plate
One insulating part, but since the first insulating part is generally plastic materials, binding force is limited between the coping plate of metal material,
Gap inevitably is formed between coping plate and the first insulating part, when carrying out fluid injection to battery, is remained on coping plate
Electrolyte can be penetrated on rotating sheet by gap, the infiltration of electrolyte will affect the mechanical performance of rotating sheet, be allowed to overturn
Sensitivity decrease, while can also considerably increase short-circuit resistance, so that the extrinsic current to be formed is become smaller and affected flow heat dissipation effect
Fruit reduces safety coefficient.
Therefore, it is badly in need of providing safety problem of the new cap structure of one kind to solve secondary cell.
Utility model content
The purpose of this utility model is that providing a kind of secondary cell top cover and its secondary in view of the deficiencies of the prior art
Battery can prevent electrolyte from penetrating on rotating sheet, to improve the security performance of secondary cell.
In order to achieve the above object, the utility model provides a kind of secondary cell top cover, comprising: coping plate and be set to top
First electrode unit, second electrode unit and the rotating sheet of cover plate, first electrode unit include the first pole and are set to first
The resistance of pole, the first pole are electrically connected by resistance with coping plate, second electrode unit including the second pole and with the second pole
The conductive sheet of column electrical connection, the second pole and coping plate insulation are assembled, and rotating sheet is electrically connected coping plate, and conductive sheet is located at rotating sheet
Top, the first insulating part is set between conductive sheet and coping plate, between coping plate and the first insulating part be equipped with adhesive.
As an embodiment, coping plate has the first groove, and adhesive is at least partly filled in the first groove.That is adhesive
It can be partly or entirely filled in the first groove, adhesive, which is at least partly filled in the first groove, may make adhesive and coping plate
It adheres to closer.
As an embodiment, the first insulating part has the second groove, and adhesive is at least partly filled in the second groove.It is i.e. viscous
Attachment can partly or entirely be filled in the second groove, and adhesive, which is at least partly filled in the second groove, may make adhesive and the
The adherency of one insulating part is closer.
As an embodiment, coping plate has the first groove, and the first insulating part has the second groove, the first groove and second
Groove encloses accommodating chamber, and adhesive is filled in accommodating chamber.Adhesive is filled in the first groove of coping plate and the first insulating part
In the second groove, it can combine closely simultaneously with coping plate and the first insulating part.
As an embodiment, adhesive be random shape, can by dispenser between coping plate and the first insulating part or
Glue re-dry is filled in first groove/second groove and is obtained.By dispenser by unformed glue be filled in coping plate with
Between first insulating part or in the first groove/second groove, it is meant that glue can fill up coping plate and the first insulating part surface
Out-of-flatness, in order to the combination of coping plate and the first insulating part, the adhesive that obtains after certain glue dries is random knot
Structure, the surface shape complementary of shape and coping plate and the first insulating part towards coping plate or the first insulating part surface one side.
As an embodiment, the first insulating part is equipped with rotating sheet receiving hole, and the air pressure inside of secondary cell is more than preset value
When, rotating sheet is overturn and protrudes into rotating sheet receiving hole and contacted with conductive sheet.The overturning ability and preset pressure of rotating sheet
Value corresponds to, and when the air pressure inside of battery is more than preset value, rotating sheet is overturn and protrudes into the rotating sheet appearance of the first insulating part
Kong Zaiyu conductive sheet of receiving contact, that is to say, that rotating sheet is electrically connected with second electrode, because first electrode passes through resistance and top cover
Piece electrical connection, it is possible to extrinsic current is formed between first electrode, coping plate and second electrode, it is slowly excessively wandering by resistance
Heat releases the energy inside secondary cell, thus will not overcharge, is on fire, explosion etc. danger, thus improve it is secondary
The security performance of battery.
As an embodiment, the first mounting hole and the second mounting hole, the first pole insulated enclosure peace are provided on coping plate
Loaded in the first mounting hole, the second pole insulated enclosure is installed in the second mounting hole.Secondary cell top cover further includes sealing ring,
Sealing ring is respectively sleeved on the first pole and the second pole and is respectively accommodated in the first mounting hole and the second mounting hole, and makes
First pole and the second pole are electrically insulated with coping plate respectively.
As an embodiment, third mounting hole is additionally provided on coping plate, third mounting hole is equipped with explosion-proof valve, explosion-proof valve
Top is equipped with explosion-proof valve screening glass.When battery due to improper use, be exposed in adverse circumstances when, the battery of high-energy will produce
Raw a large amount of gas and temperature sharply increases, gas washes explosion-proof valve open and achievees the purpose that pressure release, to improve the peace of battery
Full performance.And explosion-proof valve screening glass is mainly for preventing exotic from puncturing explosion-proof valve or exotic is located on explosion-proof valve and influences
The pressure release purpose of explosion-proof valve.
The utility model additionally provides a kind of secondary cell, shell and above-mentioned secondary electricity including battery core, receiving battery core
Pond top cover.
Adhesive is equipped between the coping plate of the utility model and the first insulating part, coping plate and first can be filled in adhesive
In other words gap is not present in gap between insulating part between coping plate and the first insulating part, thus carrying out electrolyte note
When liquid, electrolyte will not penetrate into the overturning on rotating sheet and influencing rotating sheet from the gap between the first insulating part and coping plate
Sensitivity and short-circuit resistance is caused to become larger, while entering rotating sheet prevented also from grit, the water etc. in atmosphere and influencing to overturn
The use of piece., can be when the air pressure inside of secondary cell be more than preset value thus by the cap structure of the utility model, overturning
Piece, which effectively carries out overturning, makes first electrode and second electrode be electrically connected to form external short circuit, then slowly by small short-circuit resistance
It crosses flow heat dissipation to release the energy inside secondary cell, to will not overcharge, is on fire, the danger such as explosion, and improve
The security performance of secondary cell.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the secondary cell of the utility model.
Fig. 2 is the cross-sectional view of the secondary cell top cover of the utility model.
Fig. 3 is the explosive view of the secondary cell top cover of the utility model.
Fig. 4 is the enlarged drawing of encircled portion in Fig. 2.
Fig. 5 is the enlarged drawing of another embodiment of encircled portion in Fig. 2.
Fig. 6 is the enlarged drawing of the another embodiment of encircled portion in Fig. 2.
Fig. 7 is the enlarged drawing of the another embodiment of encircled portion in Fig. 2.
Specific embodiment
Illustrate the secondary cell top cover and its secondary cell of the utility model with reference to the accompanying drawing.
Referring to Fig.1~3, secondary cell includes secondary cell top cover 1, battery core 2 and the shell 3 for accommodating battery core, note in shell
There is the secondary cell electrolyte (not shown) of infiltration battery core.Secondary cell top cover 1 includes coping plate 13, and setting is being pushed up
First electrode unit 11, second electrode unit 12, rotating sheet 14, liquid injection hole 18 and explosion-proof valve 20 on cover plate 13.Coping plate 13
It is equipped with rotating sheet fixation hole 131, the first mounting hole 132, the second mounting hole 133 and third mounting hole 134, first electrode unit
11 insulated enclosures are installed in the first mounting hole 132, and 12 insulated enclosure of second electrode unit is installed in the second mounting hole 133,
Third mounting hole 134 is equipped with explosion-proof valve 20, and the top of explosion-proof valve 20 is equipped with explosion-proof valve screening glass 19.
First electrode unit 11 is usually anode, and second electrode unit 12 is usually cathode.As shown in Fig. 2, first electrode
Unit 11 includes aluminium riveting block 111, resistance 112 and the first pole 113.First pole 113 and aluminium riveting block 111 can be split type
Structure is also an integral structure.For accurately, when the first pole 113 is the pole with boss, the first pole 113 and aluminium
Riveting block 111 is split type structure, and when the first pole 113 is cylindrical body pole, the first pole 113 and aluminium riveting block 111 can
For split type structure or it is an integral structure.Resistance 112 has mounting hole (not shown), and resistance 112 passes through mounting hole set
On the first pole 113, to realize being electrically connected for the first pole 113 and coping plate 13.First pole 113 is arranged in first
In mounting hole 132, sealing ring 16 is set on the first pole 113 and is contained in the first mounting hole 132, to make the first pole
113 carry out insulation assembly with coping plate 13.The second insulating part 17 is equipped between first pole 113 and the lower end of coping plate 13, the
One pole 113 and the positive plate of battery core 2 are electrically connected.
As shown in Fig. 2~7, second electrode unit 12 includes the second pole 122, the conduction being electrically connected with the second pole 122
Piece 121 and the second pole boss 123.Second pole 122, conductive sheet 121 and the second pole boss 123 can all be split type structure
Also connectable the two is an integral structure and another is split type structure.For accurately, when conductive sheet 121 is using seperated
When formula structure is separate structure with the second pole 122, the second pole 122 and the second pole boss 123 can be an integral structure
Or split type structure, when conductive sheet 121 and the second pole 122 are structure as a whole, the second pole 122 and the second pole boss
123 be split type structure.Second pole 121 is arranged in the second mounting hole 133, and sealing ring 16 is set on the second pole 122
And be contained in the second mounting hole 133, so that the second pole 122 be made to carry out insulation assembly with coping plate 13.Second pole boss
The second insulating part 17 is equipped between 123 and coping plate 13, the second pole boss 123 and the negative electrode tab of battery core 2 are electrically connected.It leads
The first insulating part 15 is equipped between electric piece 121 and coping plate 13, conductive sheet 121 is located at the top of rotating sheet 14, rotating sheet 14 and
Coping plate 13 is electrically connected and is set to rotating sheet fixation hole 131, and rotating sheet 14 has interconnecting piece 141, the connection overturning of interconnecting piece 141
Piece fixation hole 131.Rotating sheet 14 can be stamped and formed out by coping plate 13, i.e., rotating sheet 14 and coping plate 13 are integrally formed, thus
Rotating sheet fixation hole 131 is not present in coping plate 13；Rotating sheet 14 and coping plate 13 can also be by being welded in overturning for interconnecting piece 141
Piece fixation hole 131 and connect.First insulating part 15 is equipped with rotating sheet receiving hole 15c, and the air pressure inside of secondary cell is more than default
When value, rotating sheet 14 is overturn and protrudes into rotating sheet receiving hole 15c and contacted with conductive sheet 121, that is to say, that rotating sheet 14 with
Second pole 122 electrical connection, because the first pole 113 is electrically connected by resistance 112 with coping plate 13, it is possible in the first electricity
Extrinsic current is formed between pole unit 11, coping plate 13 and second electrode unit 12, stops overcharging, passes through external resistance slowly mistake
Flow heat dissipation releases the energy inside secondary cell, thus will not overcharge, is on fire, explosion etc. danger, to improve
The security performance of secondary cell.
As shown in figure 4, being equipped with adhesive 21 between coping plate 13 and the first insulating part 15, coping plate is can be filled in adhesive 21
13 and the first gap between insulating part 15, that is to say, that gap is not present between coping plate 13 and the first insulating part 15, thus
When carrying out injecting electrolytic solution, electrolyte will not penetrate into rotating sheet 14 from the gap between the first insulating part 15 and coping plate 13
It above influences the overturning sensitivity of rotating sheet 14 and short-circuit resistance is caused to become larger, while prevented also from grit, the water etc. in atmosphere
It enters rotating sheet 14 and influences the use of rotating sheet 14.Certainly, between adhesive 21 and coping plate 13 and the first insulating part 15
Connection can also have other forms.As shown in figure 5, coping plate 13 has the first groove (not shown), adhesive 21 is complete
Portion is filled in the first groove.As shown in fig. 6, the first insulating part 15 has the second groove (not shown), adhesive 21 is all
It is filled in the second groove.As shown in fig. 7, coping plate 13 has the first groove (not shown), the first insulating part 15 has the
Two groove (not shown)s, the first groove and the second groove enclose accommodating chamber, and adhesive 21 is filled in accommodating chamber.Adhesive
21 are filled in the first groove and/or the second groove of coping plate 13 and/or the first insulating part 15, can with coping plate 13 and/
Or first insulating part 15 combine closely, further prevented the generation in gap.Adhesive 21 can be by dispenser in coping plate 13
Glue re-dry is filled between the first insulating part 15 or in the first groove/second groove and is obtained, and shape is random shape.When
So, it also is provided with through-hole at the corresponding rotating sheet receiving hole 15c of adhesive 21, when the air pressure inside of secondary cell is more than preset value,
Rotating sheet 14 is overturn and protrudes into the through-hole of adhesive 21 and rotating sheet receiving hole 15c is contacted with conductive sheet 121, that is to say, that
Rotating sheet 14 is electrically connected with the second pole 122, can because the first pole 113 is electrically connected by resistance 112 with coping plate 13
To form extrinsic current between first electrode unit 11, coping plate 13 and second electrode unit 12, stops overcharging, pass through extrinsic current
Resistance slowly cross flow heat dissipation the energy inside secondary cell is released, thus will not overcharge, is on fire, explosion etc. danger
Danger, to improve the security performance of secondary cell.
It should be pointed out that the above specific embodiment is merely to illustrate the utility model rather than limits the utility model
Range, after having read the utility model, those skilled in the art are equal to the modification of the various equivalent forms of the utility model
Fall into the application range defined in the appended claims.
Claims (9)
1. a kind of secondary cell top cover, comprising: coping plate and first electrode unit, the second electrode list for being set to the coping plate
Member and rotating sheet, the first electrode unit include the first pole and the resistance for being set to first pole, first pole
Column is electrically connected by the resistance with the coping plate, the second electrode unit including the second pole and with second pole
The conductive sheet of electrical connection, second pole and coping plate insulation are assembled, and the rotating sheet is electrically connected the coping plate, institute
The top that conductive sheet is located at the rotating sheet is stated, the first insulating part, feature are set between the conductive sheet and the coping plate
It is, adhesive is equipped between the coping plate and first insulating part.
2. secondary cell top cover according to claim 1, which is characterized in that the coping plate has the first groove, described
Adhesive is at least partly filled in the first groove.
3. secondary cell top cover according to claim 1, which is characterized in that first insulating part has the second groove,
The adhesive is at least partly filled in the second groove.
4. secondary cell top cover according to claim 1, which is characterized in that the coping plate has the first groove, described
First insulating part has the second groove, and first groove and second groove enclose accommodating chamber, the adhesive filling
In the accommodating chamber.
5. secondary cell top cover according to any one of claims 1 to 4, which is characterized in that the adhesive is random shape.
6. secondary cell top cover according to claim 1, which is characterized in that first insulating part is accommodated equipped with rotating sheet
Hole, when the air pressure inside of the secondary cell is more than preset value, the rotating sheet is overturn and protrudes into the rotating sheet and accommodated
Hole is contacted with the conductive sheet.
7. secondary cell top cover according to claim 1, which is characterized in that be provided with the first mounting hole on the coping plate
With the second mounting hole, the first pole insulated enclosure is installed in first mounting hole, the second pole insulated enclosure
It is installed in second mounting hole.
8. secondary cell top cover according to claim 7, which is characterized in that be additionally provided with third installation on the coping plate
Hole, the third mounting hole are equipped with explosion-proof valve, and the top of the explosion-proof valve is equipped with explosion-proof valve screening glass.
9. a kind of secondary cell, including top cover, battery core and the shell for accommodating battery core, which is characterized in that the top cover is wanted for right
Seek 1~8 any secondary cell top cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820726953.XU CN208226006U (en) | 2018-05-15 | 2018-05-15 | Secondary cell top cover and its secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820726953.XU CN208226006U (en) | 2018-05-15 | 2018-05-15 | Secondary cell top cover and its secondary cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208226006U true CN208226006U (en) | 2018-12-11 |
Family
ID=64508380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820726953.XU Active CN208226006U (en) | 2018-05-15 | 2018-05-15 | Secondary cell top cover and its secondary cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208226006U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110176560A (en) * | 2019-05-24 | 2019-08-27 | 东莞百思利新能源科技有限公司 | Secondary cell top cover |
-
2018
- 2018-05-15 CN CN201820726953.XU patent/CN208226006U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110176560A (en) * | 2019-05-24 | 2019-08-27 | 东莞百思利新能源科技有限公司 | Secondary cell top cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangxi Bestley New Energy Technology Co., Ltd. Assignor: Dongguan Amperex Technology Limited Contract record no.: 2019440020019 Denomination of utility model: Secondary battery top cover and secondary battery Granted publication date: 20181211 License type: Common License Record date: 20190415 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191014 Address after: 335500 Fengshou Industrial Park, Wannian high tech Industrial Zone, Shangrao City, Jiangxi Province Patentee after: Jiangxi Bestley New Energy Technology Co., Ltd. Address before: 523809 Guan Lian Road, Lian Ping Village, Daling Shan town, Dongguan, Guangdong Patentee before: Dongguan Amperex Technology Limited |
|
| TR01 | Transfer of patent right |