CN109244310A - It is a kind of can both ends explosion battery - Google Patents
It is a kind of can both ends explosion battery Download PDFInfo
- Publication number
- CN109244310A CN109244310A CN201811000268.XA CN201811000268A CN109244310A CN 109244310 A CN109244310 A CN 109244310A CN 201811000268 A CN201811000268 A CN 201811000268A CN 109244310 A CN109244310 A CN 109244310A
- Authority
- CN
- China
- Prior art keywords
- explosion
- battery
- aluminium flake
- proof
- cap
- Prior art date
- 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.)
- Pending
Links
- 238000004880 explosion Methods 0.000 title claims abstract description 46
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 91
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- 229910000679 solder Inorganic materials 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 231100000225 lethality Toxicity 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The invention discloses it is a kind of can both ends explosion battery, including battery cap and battery case, the interior edge of the end of battery cap connection battery case: battery cap includes that explosion-proof aluminium flake, nut cap ontology, cage ring, connection aluminium flake and sealing ring, explosion-proof aluminium flake are inwardly successively arranged flange, Z-type changeover portion and explosion-proof aluminium flake from outer and cut slot；Several nut cap through-holes are equipped with inside the edge of nut cap ontology, it connects aluminium flake and is equipped with several aluminium flake through-holes and internal projection, explosion-proof aluminium flake connects the edge of nut cap ontology by flange, the one side of cage ring connects Z-type changeover portion, another side connection connection aluminium flake, explosion-proof aluminium flake is connected to internal projection, and the diameter that explosion-proof aluminium flake cuts slot is less than the interior edge of cage ring, and the battery cap opposite end of battery case is equipped with shell and cuts slot.The present invention has upper and lower two blow-up points, and when internal pressure sharply increases, explosion successively occurs for the blow-up point of battery cap and the blow-up point of battery case bottom surface, avoids battery from battery case periphery explosion.
Description
Technical field
The present invention relates to battery technology fields, and in particular to it is a kind of can both ends explosion battery.
Background technique
18650 battery cores are lithium batteries more commonly used in electronic product, and battery core is often used as in the battery of laptop
It uses.Its entirety is cylinder type.
18650 battery cores use metal shell, there is certain intensity, in use, internal would generally generate certain gas
Pressure, when air pressure inside reaches it is certain when steel shell can rupture explosion, generation safety accident.So existing 18650 battery core is just
Pole is equipped with venthole, to be exhausted decompression to battery core inside, but venthole it is oversized easily cause sundries into
Enter to battery core, therefore the stomata in battery core nut cap must satisfy two adjustings, first is that the airflow channel size for exhaust
Want moderate；Two are able to the sundries for being avoided as much as the external world, moisture enters to inside battery core.
On the other hand, when the failures such as short circuit occur for battery, the pressure of inside battery can be increased sharply, at this time anode
Gas vent can not play the role of quick pressure releasing, if pressure release speed does not catch up with the speed of internal pressure generation, battery is whole just
It can explode, cause an accident.In the prior art, it is lower quick-fried relative to battery body that intensity is set usually on battery cap
Breakpoint, when cell internal pressure abruptly increase, pressure can break through its blow-up point, achieve the purpose that pressure release.But battery cap is only
Pressure release can not be preferably exhausted since battery is integrally cylindrical in the one end (positive terminal) for being set to battery, if
If farther out apart from battery cap, battery cap can not play the role of preferable pressure release to the nucleus that gas pressure generates, therefore
A kind of battery for capableing of quickly both ends explosion is developed to be of great significance for promoting the security performance of battery entirety.
Summary of the invention
To solve deficiency in the prior art, the present invention provide it is a kind of can both ends explosion battery, solve the prior art
The technical issues of middle battery blow-up point is limited only to battery cap.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
It is a kind of can both ends explosion battery, including battery cap and battery case, battery cap connects the end of battery case
Interior edge: battery cap includes that explosion-proof aluminium flake, nut cap ontology, cage ring, connection aluminium flake and sealing ring, explosion-proof aluminium flake are inside from outer
It is successively arranged flange, Z-type changeover portion and explosion-proof aluminium flake and cuts slot；Several nut cap through-holes, connection are equipped with inside the edge of nut cap ontology
Aluminium flake is equipped with several aluminium flake through-holes and internal projection, and explosion-proof aluminium flake connects the edge of nut cap ontology, the one side of cage ring by flange
Z-type changeover portion, another side connection connection aluminium flake are connected, explosion-proof aluminium flake is connected to internal projection, and the diameter that explosion-proof aluminium flake cuts slot is less than
The interior edge of cage ring, the battery cap opposite end of battery case are equipped with shell and cut slot.
Specifically, one kind above-mentioned can both ends explosion battery, shell cuts the outer surface that slot is set to battery case bottom end.
Specifically, one kind above-mentioned can both ends explosion battery, explosion-proof aluminium flake cuts the cage ring that slot is set to explosion-proof aluminium flake
Joint face.
Specifically, one kind above-mentioned can both ends explosion battery, between internal projection and explosion-proof aluminium flake using welding.
Specifically, one kind above-mentioned can both ends explosion battery, the welding manner between internal projection and explosion-proof aluminium flake is CID
Welding.
Specifically, one kind above-mentioned can both ends explosion battery, CID welding solder joint there are two.
Specifically, one kind above-mentioned can both ends explosion battery, the material of nut cap ontology and battery case is stainless steel,
The material of cage ring and sealing ring is PBT.
Specifically, one kind above-mentioned can both ends explosion battery, the quantity of nut cap through-hole is four, four nut cap through-holes weeks
To being uniformly arranged, there are three the quantity of aluminium flake through-hole, and three aluminium flake through-holes are uniformly distributed.
Specifically, one kind above-mentioned can both ends explosion battery, two CID solder joints are in symmetrical with the center of explosion-proof aluminium flake
The heart is symmetrical.
Advantageous effects of the invention: the present invention has upper and lower two blow-up points, when internal pressure sharply increases,
Explosion occurs first for the blow-up point on battery cap, and the explosion due to nut cap ontology for explosion-proof aluminium flake provides space, should
Place's explosion will not generate lethality.When the explosion of battery cap is insufficient to allow the air pressure of inside battery to be excreted to safety value, place
Shell in battery case bottom surface cuts slot and will continue to that explosion occurs under internal pressure, although may generate certain wound at this time
Evil, but when blow-up point is in the bottom surface of battery case, the lethality that explosion generates is much smaller than quick-fried from battery case periphery
It is broken.
Detailed description of the invention
Fig. 1 is entirety sectional view of the invention；
Fig. 2 is explosion-proof aluminium flake cross-sectional view of the invention；
Fig. 3 is present invention connection aluminium flake cross-sectional view；
Fig. 4 is the partial enlarged view of Fig. 1 of the present invention；
Fig. 5 is the explosion-proof schematic illustration one of the present invention；
Fig. 6 is the explosion-proof schematic illustration two of the present invention；
The meaning of appended drawing reference: the explosion-proof aluminium flake of 1-；11- flange；The explosion-proof aluminium flake of 12- cuts slot；13-Z type changeover portion；2- nut cap sheet
Body；222- nut cap through-hole；3- cage ring；4- connection aluminium flake；42- internal projection；43- aluminium flake through-hole；5- sealing ring；52- sealing ring
Side wall；6- battery case；61- shell cuts slot.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
It is as shown in Figures 1 to 4: present embodiment discloses it is a kind of can both ends explosion battery, including battery cap and battery
Shell 6, the interior edge of the end of battery cap connection battery case 6: battery cap includes explosion-proof aluminium flake 1, nut cap ontology 2, isolation
Circle 3, connection aluminium flake 4 and sealing ring 5, explosion-proof aluminium flake 1 are inwardly successively arranged flange 11, Z-type changeover portion 13 and explosion-proof aluminium from outer
Piece cuts slot 12；Be equipped with several nut cap through-holes 22 inside the edge of nut cap ontology 2, connection aluminium flake 4 be equipped with several aluminium flake through-holes 43 and
Internal projection 42, explosion-proof aluminium flake 1 connect the edge of nut cap ontology 2 by flange 11, and the one side of cage ring 3 connects Z-type changeover portion 13,
Another side connection connection aluminium flake 4, explosion-proof aluminium flake 1 are connected to internal projection 42, and the diameter for cutting slot 12 is less than the interior edge of cage ring 3, electricity
The battery cap opposite end of pond shell 6 is equipped with shell and cuts slot 61.
Specifically, shell cuts the outer surface that slot 61 is set to 6 bottom end of battery case for the ease of explosion.Explosion-proof aluminium flake is cut
Slot 12 is set to 3 joint face of cage ring of explosion-proof aluminium flake 1.
Using welding between internal projection 42 and explosion-proof aluminium flake 1, preferably CID welds (failure of current device), CID welding
There are two solder joints.
The nut cap ontology 2 of the present embodiment and the material of battery case 6 are stainless steel, the material of cage ring 3 and sealing ring 5
It is PBT.
The quantity of the present embodiment nut cap through-hole 22 is four, and four nut cap through-holes 22 are circumferential to be uniformly arranged, aluminium flake through-hole 43
Quantity there are three, three aluminium flake through-holes 43 are uniformly distributed.
Two CID solder joints are symmetrical as symmetrical centre using the center of explosion-proof aluminium flake 1.
When work, under normal condition, battery is in Fig. 1 state, and when the pressure of inside battery is slowly increased, pressure can be from close
Gap between seal 5 and explosion-proof aluminium flake 1 appears, and achievees the purpose that pressure release.
As shown in Figure 5: when battery causes internal pressure sharply to increase due to short-circuit or other reasons, pressure is through connecting aluminium
The aluminium flake through-hole 43 of piece 4 enters to explosion-proof aluminium flake 1, since the intensity of explosion-proof aluminium flake 1 is lower than the intensity of battery case, when pressure
When power is increased to a certain degree, the CID welding connected between aluminium flake and explosion-proof aluminium flake is rushed to open, and positive electrode current is cut off.It is explosion-proof
The center of aluminium flake 1 is mobile to nut cap ontology 2, and Z-type changeover portion 13 increases the support force for explosion-proof aluminium flake 1, so that explosion-proof aluminium
The center of piece 1 is more advantageous to explosion-proof aluminium flake and cuts the opening of slot 12 and become larger into 2 moving process of nut cap ontology, further decreases anti-
Quick-fried aluminium flake 1 cuts the intensity at slot 12 in explosion-proof aluminium flake, and when pressure rises to a certain degree, explosion-proof aluminium flake 1 is cut in explosion-proof aluminium flake
It is torn at slot 12, internal pressure moment is released, and nut cap ontology 2 can prevent explosion-proof aluminium flake 1 from collapsing out.Nut cap ontology 2 is presented
Convex provides space for the explosion of explosion-proof aluminium flake 1, and four ventholes of nut cap ontology 2 ensure that electricity after explosion-proof 1 explosion of aluminium flake
The timely release of core inner air pressure prevents air pressure that can not be released effectively and battery core is caused to explode.
It is as shown in Figure 6: when the explosion of explosion-proof aluminium flake 1 still can not make the air pressure of inside battery be excreted to safety value, place
Shell in 6 bottom surface of battery case cuts slot 61 can occur explosion under internal pressure, prevent battery from integrally exploding.
The present embodiment has upper and lower two blow-up points, and when internal pressure sharply increases, the blow-up point on battery cap is first
Explosion first occurs, the explosion due to nut cap ontology 2 for explosion-proof aluminium flake 1 provides space, and explosion will not generate killing at this
Power.When the explosion of battery cap is insufficient to allow the air pressure of inside battery to be excreted to safety value, the shell in 6 bottom surface of battery case
Body cuts slot 61 and will continue to that explosion occurs under internal pressure, although may generate certain injury at this time, at blow-up point
When the bottom surface of battery case 6, the lethality that explosion generates is much smaller than from 6 periphery explosion of battery case.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. one kind can both ends explosion battery, including battery cap and battery case (6), the battery cap connects battery case
(6) the interior edge of end, it is characterised in that: the battery cap include explosion-proof aluminium flake (1), nut cap ontology (2), cage ring (3),
Connection aluminium flake (4) and sealing ring (5), the explosion-proof aluminium flake (1) are inwardly successively arranged flange (11), Z-type changeover portion from outer
(13) and explosion-proof aluminium flake cuts slot (12)；Several nut cap through-holes (22), the connection aluminium flake are equipped with inside the edge of nut cap ontology (2)
(4) it is equipped with several aluminium flake through-holes (43) and internal projection (42), the explosion-proof aluminium flake (1) connects nut cap ontology by flange (11)
(2) one side at edge, the cage ring (3) connects Z-type changeover portion (13), and another side connection connection aluminium flake (4) is described explosion-proof
Aluminium flake (1) is connected to internal projection (42), and the diameter that the explosion-proof aluminium flake cuts slot (12) is less than the interior edge of cage ring (3), the electricity
The battery cap opposite end of pond shell (6) is equipped with shell and cuts slot (61).
2. one kind according to claim 1 can both ends explosion battery, it is characterised in that: the shell cut slot (61) setting
In the outer surface of battery case (6) bottom end.
3. one kind according to claim 1 can both ends explosion battery, it is characterised in that: the explosion-proof aluminium flake cuts slot (12)
It is set to cage ring (3) joint face of explosion-proof aluminium flake (1).
4. one kind according to claim 1 can both ends explosion battery, it is characterised in that: the internal projection (42) with it is explosion-proof
Using welding between aluminium flake (1).
5. one kind according to claim 4 can both ends explosion battery, it is characterised in that: the internal projection (42) with it is explosion-proof
Welding manner between aluminium flake (1) is CID welding.
6. one kind according to claim 5 can both ends explosion battery, it is characterised in that: CID welding solder joint there are two.
7. one kind according to claim 1 can both ends explosion battery, it is characterised in that: the nut cap ontology (2) and electricity
The material of pond shell (6) is stainless steel, and the material of the cage ring (3) and sealing ring (5) is PBT.
8. one kind according to claim 1 can both ends explosion battery, it is characterised in that: the number of the nut cap through-hole (22)
Amount is four, and four nut cap through-holes (22) are circumferentially uniformly arranged, and there are three the quantity of the aluminium flake through-hole (43), and three aluminium flakes are logical
Hole (43) is uniformly distributed.
9. one kind according to claim 6 can both ends explosion battery, it is characterised in that: two CID solder joints are with explosion-proof aluminium
The center of piece (1) is that symmetrical centre is symmetrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811000268.XA CN109244310A (en) | 2018-08-30 | 2018-08-30 | It is a kind of can both ends explosion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811000268.XA CN109244310A (en) | 2018-08-30 | 2018-08-30 | It is a kind of can both ends explosion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109244310A true CN109244310A (en) | 2019-01-18 |
Family
ID=65069554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811000268.XA Pending CN109244310A (en) | 2018-08-30 | 2018-08-30 | It is a kind of can both ends explosion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109244310A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234281A (en) * | 2020-11-02 | 2021-01-15 | 苏州橙柳电子精密有限公司 | 21700 electric core is with explosion-proof steel-shelled of two flaring and 21700 electric core |
| CN112366420A (en) * | 2020-11-09 | 2021-02-12 | 深圳市合壹新能技术有限公司 | Battery shell structure and button cell |
| TWI725613B (en) * | 2019-04-02 | 2021-04-21 | 大陸商常州微宙電子科技有限公司 | Explosion-proof enclosure for an energy storage device and an energy storage device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243606A (en) * | 1997-11-11 | 2000-02-02 | 松下电器产业株式会社 | Explosion-proof nonaqueous electrolyte secondary cell and rupture pressure setting method therefor |
| CN204792945U (en) * | 2015-06-30 | 2015-11-18 | 常州市武进中瑞电子有限公司 | Prevent short circuit block |
| KR20170050217A (en) * | 2015-10-30 | 2017-05-11 | 주식회사 아트라스비엑스 | A vent cap of a storage battery |
| CN208923259U (en) * | 2018-08-30 | 2019-05-31 | 苏州橙柳电子精密有限公司 | It is a kind of can both ends explosion battery |
-
2018
- 2018-08-30 CN CN201811000268.XA patent/CN109244310A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243606A (en) * | 1997-11-11 | 2000-02-02 | 松下电器产业株式会社 | Explosion-proof nonaqueous electrolyte secondary cell and rupture pressure setting method therefor |
| CN204792945U (en) * | 2015-06-30 | 2015-11-18 | 常州市武进中瑞电子有限公司 | Prevent short circuit block |
| KR20170050217A (en) * | 2015-10-30 | 2017-05-11 | 주식회사 아트라스비엑스 | A vent cap of a storage battery |
| CN208923259U (en) * | 2018-08-30 | 2019-05-31 | 苏州橙柳电子精密有限公司 | It is a kind of can both ends explosion battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI725613B (en) * | 2019-04-02 | 2021-04-21 | 大陸商常州微宙電子科技有限公司 | Explosion-proof enclosure for an energy storage device and an energy storage device |
| CN112234281A (en) * | 2020-11-02 | 2021-01-15 | 苏州橙柳电子精密有限公司 | 21700 electric core is with explosion-proof steel-shelled of two flaring and 21700 electric core |
| CN112366420A (en) * | 2020-11-09 | 2021-02-12 | 深圳市合壹新能技术有限公司 | Battery shell structure and button cell |
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