CN208189647U - Secondary cell top cover and its secondary cell - Google Patents
Secondary cell top cover and its secondary cell Download PDFInfo
- Publication number
- CN208189647U CN208189647U CN201820382352.1U CN201820382352U CN208189647U CN 208189647 U CN208189647 U CN 208189647U CN 201820382352 U CN201820382352 U CN 201820382352U CN 208189647 U CN208189647 U CN 208189647U
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- CN
- China
- Prior art keywords
- coping plate
- secondary cell
- pole
- top cover
- insulating part
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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
- Connection Of Batteries Or Terminals (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 and its secondary cell, wherein, secondary cell top cover includes: coping plate and the first electrode unit that is arranged on coping plate, second electrode unit and rotating sheet, first electrode unit includes the first pole and the resistance that is arranged on 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 with coping plate, conductive sheet is located at the top of rotating sheet, first insulating part is set between conductive sheet and coping plate, coping plate and the first insulating part are fitted and fixed with.Coping plate and the first insulating part are fitted and fixed with, to prevent the generation in gap between coping plate and the first insulating part, it can avoid when carrying out injecting electrolytic solution, electrolyte penetrates on rotating sheet from gap 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 brick 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 setting are being pushed up
First electrode unit, second electrode unit and rotating sheet on cover plate, first electrode unit include the first pole and setting the
Resistance on one pole, the first pole are electrically connected by resistance with coping plate, and second electrode unit is including the second pole and with the
The conductive sheet of two poles electrical connection, the second pole and coping plate insulation are assembled, and rotating sheet is electrically connected with coping plate, and conductive sheet is located at
The top of rotating sheet, is arranged the first insulating part between conductive sheet and coping plate, coping plate and the first insulating part are fitted and fixed with.
Further, the mode being fitted and fixed with may include two kinds: first, groove, the setting of the first insulating part is arranged in coping plate
Boss, coping plate and the first insulating part are fitted and fixed with by groove and boss；Second, boss is arranged in coping plate, first absolutely
Groove is arranged in edge part, and coping plate and the first insulating part are fitted and fixed with by boss and groove.Preferably first way, the
Boss is set on one insulating part, groove is set on coping plate, and the boss that plastic material is formed can be in the groove of metal material
It is fitted into closer.
Further, adhesive is set in groove, and boss insertion groove is simultaneously contacted with adhesive so that coping plate and first
Insulating part is tightly engaged into.Groove and boss can be bonded closely, so that boss and groove be made to be tightly engaged by adhesive.Adherency
Part is random shape, to be obtained by dispenser in filling glue re-dry in groove.By dispenser by unformed glue
It being filled in groove, it is meant that glue can fill up the out-of-flatness of bottom portion of groove, in order to the combination of groove and boss, certain glue
The adhesive obtained after water is dry is random structure, and the shape and bottom portion of groove shape of the one side towards bottom portion of groove are mutual
It mends.
Further, flexible seals be may also set up in groove, boss insertion groove simultaneously squeezes flexible seals so that top
Cover plate and the first insulating part are tightly engaged into.Flexible seals can be rubber seal, such as sealing ring or gasket.Flexible seals
With flexibility, the out-of-flatness of bottom portion of groove can be filled up by being squeezed it by boss, in order to which coping plate and the first insulating part are close
Engagement.
Further, the first insulating part is equipped with rotating sheet receiving hole and turns over when the air pressure inside of secondary cell is more than preset value
Rotor is overturn and protrudes into rotating sheet receiving hole and contacted with conductive sheet.The overturning ability and preset pressure value pair of rotating sheet
It answers, when the air pressure inside of battery is more than preset value, rotating sheet is overturn and protrudes into the rotating sheet receiving hole of the first insulating part
It is contacted again with conductive sheet, that is to say, that rotating sheet is electrically connected with second electrode, because first electrode passes through resistance and coping plate electricity
Connection, it is possible to form extrinsic current between first electrode, coping plate and second electrode, flow heat dissipation is slowly crossed by resistance will
Energy inside secondary cell releases, thus will not overcharge, is on fire, explosion etc. danger, thus improve secondary cell
Security performance.
Further, the first mounting hole and the second mounting hole are provided on coping plate, the first pole insulated enclosure is installed on
In first mounting hole, the second pole insulated enclosure is installed in the second mounting hole.Secondary cell top cover further includes sealing ring, sealing
Circle 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.
Further, third mounting hole is additionally provided on coping plate, third mounting hole is equipped with explosion-proof valve, the top of explosion-proof valve
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 generate greatly
The gas and temperature of amount sharply increase, gas washes explosion-proof valve open and achievees the purpose that pressure release, to improve the safety of battery
Energy.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 explosion-proof
The pressure release purpose of valve.
The utility model additionally provides a kind of secondary cell, including battery core, accommodates the shell of battery core and any of the above-described described
Secondary cell top cover.
First insulating part is set between the conductive sheet and coping plate of the utility model, and coping plate and the first insulating part are chimeric solid
It is fixed, to prevent the generation in gap between coping plate and the first insulating part, can avoid when carrying out injecting electrolytic solution, electrolyte from
Gap penetrates on rotating sheet and influences the overturning sensitivity of rotating sheet and short-circuit resistance is caused to become larger.It is thus practical new by this
The cap structure of type, can be when the air pressure inside of secondary cell be more than preset value, and rotating sheet, which effectively carries out overturning, makes the first electricity
Pole and second electrode are electrically connected to form external short circuit, then slowly crossing flow heat dissipation by small short-circuit resistance will be inside secondary cell
Energy releases, thus will not overcharge, is on fire, explosion etc. danger, to 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 utility model secondary cell top cover.
Fig. 3 is the enlarged drawing of encircled portion in Fig. 2.
Fig. 4 is the enlarged drawing of another embodiment of Fig. 3.
Specific embodiment
Illustrate the secondary cell top cover and its secondary cell of the utility model with reference to the accompanying drawing.
Referring to Figures 1 and 2, secondary cell includes secondary cell top cover 1, battery core 2 and the shell 3 for accommodating battery core, in shell
It is marked with the secondary cell electrolyte (not shown) of infiltration battery core.Secondary cell top cover 1 includes coping plate 13, and setting exists
First electrode unit 11, second electrode unit 12, rotating sheet 14 on coping plate 13, liquid injection hole 18 and explosion-proof valve 20.Coping plate
13 are equipped with the first mounting hole, the second mounting hole and third mounting hole (not shown), 11 insulated enclosure of first electrode unit
It is installed in the first mounting hole, 12 insulated enclosure of second electrode unit is installed in the second mounting hole, and third mounting hole is equipped with anti-
The top of quick-fried valve 20, 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 can be split type structure, and when the first pole 113 is cylindrical body pole, the first pole 113 and aluminium rivet block 111
It for split type structure or can be an integral structure.Resistance 112 has mounting hole (not shown), and resistance 112 passes through mounting hole
It is sheathed 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
In one mounting hole, sealing ring 16 is set on the first pole 113 and is contained in the first mounting hole, to make the first pole 113
Insulation assembly is carried out with coping plate 13.Between first pole 113 and the lower end of coping plate 13 be equipped with lower second insulating part 17, first
Pole 113 and the positive plate of battery core 2 are electrically connected.
Second electrode unit 12 includes the second pole 122, the conductive sheet 121 being electrically connected with the second pole 122 and the second pole
Column boss 123.Second pole 122, conductive sheet 121 and the second pole boss 123 can all be split type structure also connectable two
Person is an integral structure and another is split type structure.For accurately, when conductive sheet 121 adopts a split structure i.e. with the
When two poles 122 are separate structure, 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 are split type knot
Structure.Second pole 121 is arranged in the second mounting hole, and sealing ring 16 is set on the second pole 122 and is contained in the second installation
In hole, so that the second pole 122 be made to carry out insulation assembly with coping plate 13.It is set between second pole boss 123 and coping plate 13
There is lower second insulating part 17, the second pole boss 123 and the negative electrode tab of battery core 2 are electrically connected.Conductive sheet 121 and coping plate 13
Between be equipped with the first insulating part 15, conductive sheet 121 is located at the top of rotating sheet 14, rotating sheet 14 on coping plate 13 and with top
Cover plate electrical connection.First insulating part 15 is equipped with rotating sheet receiving hole 15c and turns over when the air pressure inside of secondary cell is more than preset value
Rotor 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 and the second pole
122 electrical connections, because the first pole 113 is electrically connected by resistance 112 with coping plate 13, it is possible to first electrode unit,
Extrinsic current is formed between coping plate and second electrode unit, stops overcharging, slowly crossing flow heat dissipation by external resistance will be secondary
The energy of inside battery releases, thus will not overcharge, is on fire, explosion etc. danger, to improve the peace of secondary cell
Full performance.
The first insulating part 15 is equipped between conductive sheet 121 and coping plate 13, coping plate 13 and the first insulating part 15 are chimeric solid
It is fixed.It is fitted and fixed with by coping plate 13 and the first insulating part 15, to prevent gap between coping plate 13 and the first insulating part 15
Generation, can avoid when carrying out injecting electrolytic solution, electrolyte penetrates on rotating sheet 14 from gap and influences rotating sheet 14
It overturns sensitivity and short-circuit resistance is caused to become larger.Can be when the air pressure inside of secondary cell be more than preset value, rotating sheet 14 is effective
Carry out that overturning makes first electrode unit 11 and second electrode unit 12 is electrically connected to form external short circuit, then pass through small short circuit electricity
Resistance slowly cross flow heat dissipation the energy inside secondary cell is released, thus will not overcharge, is on fire, explosion etc. danger,
To improve the security performance of secondary cell.
As shown in figure 3, groove 13a is arranged in coping plate 13, boss 15b, coping plate 13 and first is arranged in the first insulating part 15
Insulating part 15 is fitted and fixed with by groove 13a and boss 15b, and adhesive 21 is arranged in groove 13a, and adhesive 21 passes through
Dispenser is obtained in filling glue re-dry in groove 13a, and boss 15b insertion groove 13a is simultaneously contacted with adhesive 21 so as to push up
Cover plate 13 and the first insulating part 15 are tightly engaged into.
Coping plate 13 and the first insulating part 15, which are fitted and fixed with, to be another way, as shown in figure 4, coping plate 13 is arranged
Boss 13b, the first insulating part 15 are arranged groove (not shown), coping plate 13 and the first insulating part 15 by boss 13b and
Groove is fitted and fixed with, and groove 15a in be arranged adhesive 21, adhesive 21 by dispenser in groove fill glue again
It dries and obtains, boss 13b insertion groove is simultaneously contacted with adhesive 21 so that coping plate 13 and the first insulating part 15 are tightly engaged into.
Certainly, the adhesive 21 in Fig. 3 and Fig. 4 is also changed to flexible seals, is embedded in groove by boss 15b or 13b
And flexible seals are squeezed, so that flexible seals is filled up the out-of-flatness of bottom portion of groove, absolutely in order to coping plate 13 and first
Edge part 15 is tightly engaged into.
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 (10)
1. a kind of secondary cell top cover, comprising: coping plate and the first electrode unit being arranged on the coping plate, second electrode
Unit and rotating sheet, the first electrode unit include the first pole and the resistance that is arranged on first pole, and described the
One pole is electrically connected by the resistance with the coping plate, and the second electrode unit is including the second pole and with described second
The conductive sheet of pole electrical connection, second pole and coping plate insulation are assembled, the rotating sheet and coping plate electricity
Connection, the conductive sheet are located at the top of the rotating sheet, the first insulating part are arranged between the conductive sheet and the coping plate,
It is characterized in that, the coping plate and first insulating part are fitted and fixed with.
2. secondary cell top cover according to claim 1, which is characterized in that the coping plate setting groove, described first
Boss is arranged in insulating part, and the coping plate and first insulating part are fitted and fixed with by the groove and the boss.
3. secondary cell top cover according to claim 1, which is characterized in that the coping plate setting boss, described first
Groove is arranged in insulating part, and the coping plate and first insulating part are fitted and fixed with by the boss and the groove.
4. secondary cell top cover according to claim 2 or 3, which is characterized in that adhesive is set in the groove, it is described
Boss is embedded in the groove and is contacted with the adhesive so that the coping plate and first insulating part are tightly engaged into.
5. secondary cell top cover according to claim 4, which is characterized in that the adhesive is random shape.
6. secondary cell top cover according to claim 2 or 3, which is characterized in that flexible seals are set in the groove,
The boss is embedded in the groove and squeezes the flexible seals so that the coping plate and first insulating part closely connect
It closes.
7. 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.
8. 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.
9. secondary cell top cover according to claim 8, 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.
10. 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 1~9 any secondary cell top cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820382352.1U CN208189647U (en) | 2018-03-20 | 2018-03-20 | Secondary cell top cover and its secondary cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820382352.1U CN208189647U (en) | 2018-03-20 | 2018-03-20 | Secondary cell top cover and its secondary cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208189647U true CN208189647U (en) | 2018-12-04 |
Family
ID=64438869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820382352.1U Active CN208189647U (en) | 2018-03-20 | 2018-03-20 | Secondary cell top cover and its secondary cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208189647U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110176559A (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
- 2018-03-20 CN CN201820382352.1U patent/CN208189647U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110176559A (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: 20181204 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: 20190930 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 |