CN205542935U - Battery explosion -proof cover cap - Google Patents
Battery explosion -proof cover cap Download PDFInfo
- Publication number
- CN205542935U CN205542935U CN201620325521.9U CN201620325521U CN205542935U CN 205542935 U CN205542935 U CN 205542935U CN 201620325521 U CN201620325521 U CN 201620325521U CN 205542935 U CN205542935 U CN 205542935U
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- CN
- China
- Prior art keywords
- valve block
- battery
- explosion
- proof cap
- battery explosion
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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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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model discloses a battery explosion -proof cover cap aims at providing a battery explosion -proof cover cap who reduces the internal resistance, optimizes structure, increases structure joint strength, and its technical scheme main points are, including top cap, valve block, baffle and seal, be equipped with the first of cladding top cap on the valve block and bordure, be equipped with the blasting nick on the valve block, the seal deviates from the second that battery one side was equipped with cladding centre gripping valve block bordures, the valve block is fixed bordure to the second in. So set up, the top cap is fixed to the valve block on through the first centre gripping of borduring, and the valve block is further fixed in the second of seal is bordured by the centre gripping, continues to increase when reaching a definite value as battery internal pressure, guarantees that the battery is inside gaseously to back down the rupture membrane piece and carry out the pressure release and exhaust from blowing up the nick, guarantees its security.
Description
Technical field
This utility model relates to lithium battery accessory technical field, more specifically, it relates to a kind of battery explosion-proof cap.
Background technology
At present, notification number is that the Chinese patent of 203800105U discloses one and includes explosion-proof cap, explosion-proof diaphragm, annular insulation dottle pin and orifice plate；Described explosion-proof cap center is protruding outside battery, explosion-proof cap bossing is provided with at least one passage, explosion-proof cap is fixedly connected on explosion-proof diaphragm upper surface, a space being in communication with the outside is formed between explosion-proof diaphragm and explosion-proof cap, explosion-proof membrane surface is provided with explosion indentation, explosion-proof diaphragm center is to battery inner bulge, fix with the high spot of explosion-proof diaphragm at described aperture plate center and be connected, annular insulation dottle pin it is provided with between orifice plate and explosion-proof diaphragm, annular insulation dottle pin surrounding is downwardly extending sidewall and wraps orifice plate surrounding, the inner surface of the sidewall that annular insulation dottle pin surrounding downwardly extends is provided with spacing preiection, prevent orifice plate from departing from annular insulation dottle pin.
This rupture pressure disc sheet outer rim forms bound edge after extending upwardly past bending and explosion-proof cap outer rim is wrapped up, thus explosion-proof cap is fixed on explosion-proof diaphragm, explosion-proof diaphragm and annular insulation dottle pin are that split is arranged during manufacturing, later stage is connected by bonding mode, when cell internal pressure is increased to certain value, explosion-proof diaphragm raises up to disconnect with orifice plate under the effect of battery inside and outside differential pressure and cuts off current supply circuit, when cell internal pressure continue to increase reach certain value time, inside battery gas not necessarily backs down explosion-proof diaphragm at explosion indentation and carries out pressure release aerofluxus, but explosion-proof diaphragm and explosion-proof cap moment are pushed up and departs from, it is all blast.
Utility model content
The purpose of this utility model be to provide a kind of reduce internal resistance, optimize structure, increase structure bonding strength battery explosion-proof cap.
Above-mentioned technical purpose of the present utility model has the technical scheme that
A kind of battery explosion-proof cap, including top cover, valve block, dividing plate and seal, described valve block is provided with the first bound edge of cladding top cover, and valve block is provided with explosion indentation, described seal deviates from battery side and is provided with the second bound edge of cladding clamping valve block, and valve block is fixed in the second bound edge.
It is arranged such, top cover is gripped to valve block by the first bound edge, valve block is clamped and fixed in the second bound edge of seal further, when cell internal pressure continue to increase reach certain value time, ensure that the gas of inside battery backs down explosion-proof diaphragm at explosion indentation and carries out pressure release aerofluxus, it is ensured that its safety.
Arrange further: the described top cover position inconsistent with valve block is provided with laser solder joint.
Being arranged such, by laser solder joint, the internal resistance of block can be controlled in 5 below m Ω, and internal resistance will not be drifted about, and concordance is good.
Arrange further: described dividing plate is hard circular aluminium sheet with holes, and center is provided with bump upwards.
Being arranged such, dividing plate needs to connect the positive pole of battery, elects aluminium sheet, good conductivity as.
Arrange further: being provided with the flattened conical that battery side is protruding on described valve block, explosion indentation is positioned at pyramid side.
It is arranged such, by the summit, tapering of valve block, is conveniently connected conduction with dividing plate.
Arrange further: the bump at described dividing plate center and the vertex of a cone position of valve block are provided with open circuit solder joint.
Being arranged such, welding manner decreases about 70% than crimping mode internal resistance, decreases the heating potential safety hazard that the big electric current of power lithium battery brings.
Arrange further: described valve block is soft flake aluminum.
Being arranged such, the material of aluminium flake on the one hand good conductivity, on the other hand, soft flake aluminum is easily by inside battery air pressure deformation, and trigger sensitivity is more accurate.
Arrange further: described seal is provided with the draw-in groove being embedded for dividing plate towards battery side.
It is arranged such; when open circuit protection occurs; the solder joint of dividing plate and valve block is opened; dividing plate takes off position in falling behind in battery not to be fixed, and may cause new short circuit, produce secondary disaster in battery; pass through draw-in groove; after open circuit solder joint between dividing plate and valve block is opened, dividing plate is still fixed in seal, eliminates the potential safety hazard that dividing plate comes off.
Arrange further: described seal is made up of polyphenyl alkene plastic material.
Being arranged such, the most translucent colorless solid, odorless is nontoxic, the highly crystallized due to compound with regular structure, therefore fusing point may be up to 167 DEG C.Heat-resisting, corrosion-resistant.
Arrange further: described top cover is hard nickel plating iron plate.
Being arranged such, the stability in the air of nickel plating iron plate is the highest, owing to metallic nickel has the strongest passivation ability, can be quickly generated one layer of very thin passivating film on surface, can resist the corrosion of air, alkali and some acid.
Arrange further: described explosion indentation is groove, and depth of groove is the 1/2 of valve block.
Being arranged such, the thickness of groove is more suitable, and when reaching pressure release trigger value, valve block splits because groove position stress is excessive, it is achieved that pressure release is protected.
In sum, this utility model has the advantages that the structure design improving valve block with seal, reduces internal resistance, simplifies structure, decrease the danger of secondary disaster, improves protection and trigger intrinsic pressure control accuracy, it is ensured that explosion-proof reliability.
Accompanying drawing explanation
Fig. 1 is the overall schematic of battery explosion-proof cap；
Fig. 2 is the cap structure figure of battery explosion-proof cap；
Fig. 3 is the valve structure figure of battery explosion-proof cap；
Fig. 4 is the diaphragm structure figure of battery explosion-proof cap；
Fig. 5 is the seal structure chart of battery explosion-proof cap.
In figure: 1, top cover；2, valve block；3, dividing plate；4, seal；5, the first bound edge；6, the second bound edge；7, explosion indentation；8, laser solder joint；9, bump；10, flattened conical；11, open circuit solder joint；12, draw-in groove.
Detailed description of the invention
Below in conjunction with Fig. 1 to Fig. 5, battery explosion-proof cap is described further.Wherein, identical parts are presented with like reference characters.It should be noted that, word "front", "rear" used herein, "left", "right", "up" and "down" " interior " and " outward " " first " " second " are intended merely to facilitate the reference azimuth that statement is used, suggestion is with reference to the direction in accompanying drawing, and word " interior " and " outward " refer respectively to the direction towards or away from particular elements geometric center.
Embodiment 1: a kind of battery explosion-proof cap, as shown in Figure 1, including top cover 1, valve block 2, dividing plate 3 and seal 4, valve block 2 is provided with the first bound edge 5 of cladding top cover 1, valve block 2 is provided with explosion indentation 7, seal 4 deviates from battery side and is provided with the second bound edge 6 of cladding clamping valve block 2, and valve block 2 is fixed in the second bound edge 6.
As in figure 2 it is shown, top cover 1 is hard nickel plating round iron plate, central protrusion, have multiple pore (not shown in FIG.), top cover 1 plays electric action when normal work, nickel plating be round iron plate be to increase antioxidation, anticorrosive, improve conductive stability.
As shown in Figure 3, valve block 2 is soft flake aluminum, valve block 2 plays conduction and sealing function when normal work, shape is the flattened conical 10 to inside battery projection, it is provided with circle shape groove at pyramid side, valve block 2 is provided with explosion indentation 7, and explosion indentation 7 refers to this groove, and depth of groove is the 1/2 of valve block 2.
Top cover 1 position inconsistent with valve block 2 is provided with laser solder joint 8, and welding manner decreases about 70% than crimping mode internal resistance, and resistance change rate is reduced to 4% by 66%.Improve inner resistance after improvement, decrease the heating potential safety hazard that the big electric current of power lithium battery brings.
As shown in Figure 4, dividing plate 3 is hard circular aluminium sheet with holes, and dividing plate 3 is again provided with pore (not shown in FIG.), center has bump 9 upwards, dividing plate to connect the positive pole of battery for 3 times, above connect valve block 2, electric action is played, simultaneously solid matter in isolation battery when normal work.
As it is shown in figure 5, seal 4 is polyphenyl alkene plastic cement material, annular, draw-in groove 12 stationary barrier 3 below seal 4, top parcel top cover 1 and valve block 2, be pressed in plate in draw-in groove 12, being provided with solder joint between dividing plate 3 center bump 9 and valve block 2 is open circuit solder joint 11, and mode is all laser welding.
Principle of the present utility model is, when battery aerogenesis, air-flow enters on the downside of valve block 2 from the aperture of dividing plate 3.Along with gas increases, air pressure increases, valve block 2 upwards stress, and dividing plate 3 is to lower stress, and when inner and outer air pressure difference reaches open circuit trigger value, solder joint is pulled off, and cuts off circuit, it is achieved the function of open circuit protection.After block is by circuitry cuts, if still aerogenesis inside battery, air pressure increases again, when on gas bleeder valve, inner and outer air pressure difference reaches pressure release trigger value, groove on gas bleeder valve splits because stress is excessive, electricity pool gas through groove outside the pore of top cover 1 is discharged to battery, it is achieved that pressure release protection function.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (10)
1. a battery explosion-proof cap, including top cover (1), valve block (2), dividing plate (3) and seal (4), described valve block (2) is provided with first bound edge (5) of cladding top cover (1), valve block (2) is provided with explosion indentation (7), it is characterized in that: described seal (4) deviates from battery side and is provided with second bound edge (6) of cladding clamping valve block (2), and valve block (2) is fixed in the second bound edge (6).
Battery explosion-proof cap the most according to claim 1, it is characterised in that: the inconsistent position of described top cover (1) and valve block (2) is provided with laser solder joint (8).
Battery explosion-proof cap the most according to claim 1, it is characterised in that: described dividing plate (3) is hard circular aluminium sheet with holes, and center is provided with bump (9) upwards.
Battery explosion-proof cap the most according to claim 3, it is characterised in that: being provided with the flattened conical (10) that battery side is protruding on described valve block (2), explosion indentation (7) is positioned at pyramid side.
Battery explosion-proof cap the most according to claim 4, it is characterised in that: the bump (9) at described dividing plate (3) center and the vertex of a cone position of valve block (2) are provided with open circuit solder joint (11).
Battery explosion-proof cap the most according to claim 4, it is characterised in that: described valve block (2) is soft flake aluminum.
Battery explosion-proof cap the most according to claim 1, it is characterised in that: described seal (4) is provided with the draw-in groove (12) being embedded for dividing plate (3) towards battery side.
Battery explosion-proof cap the most according to claim 1, it is characterised in that: described seal (4) is made up of polyphenyl alkene plastic material.
Battery explosion-proof cap the most according to claim 1, it is characterised in that: described top cover (1) is hard nickel plating iron plate.
Battery explosion-proof cap the most according to claim 4, it is characterised in that: described explosion indentation (7) is groove, and depth of groove is the 1/2 of valve block (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620325521.9U CN205542935U (en) | 2016-04-18 | 2016-04-18 | Battery explosion -proof cover cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620325521.9U CN205542935U (en) | 2016-04-18 | 2016-04-18 | Battery explosion -proof cover cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205542935U true CN205542935U (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620325521.9U Active CN205542935U (en) | 2016-04-18 | 2016-04-18 | Battery explosion -proof cover cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205542935U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378413A (en) * | 2018-08-30 | 2019-02-22 | 苏州橙柳电子精密有限公司 | A kind of dual explosion battery cap and battery |
-
2016
- 2016-04-18 CN CN201620325521.9U patent/CN205542935U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378413A (en) * | 2018-08-30 | 2019-02-22 | 苏州橙柳电子精密有限公司 | A kind of dual explosion battery cap and battery |
| CN109378413B (en) * | 2018-08-30 | 2023-12-26 | 苏州橙柳电子精密有限公司 | Dual blasting battery cap and battery |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |