CN1346157A - Safety valve for alkaline cell - Google Patents
Safety valve for alkaline cell Download PDFInfo
- Publication number
- CN1346157A CN1346157A CN00117513A CN00117513A CN1346157A CN 1346157 A CN1346157 A CN 1346157A CN 00117513 A CN00117513 A CN 00117513A CN 00117513 A CN00117513 A CN 00117513A CN 1346157 A CN1346157 A CN 1346157A
- Authority
- CN
- China
- Prior art keywords
- valve body
- valve
- plug screw
- safety valve
- spool
- 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
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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 alkaline cell safety valve includes valve body, valve core, spring, regulating screw-plug and seal rubber ring, the internal conical surface of the valve body and the neck portion of valve cor are formed into channel, the air inlet is communicated with air hole by means of the above-mentioned channel, the neck portion of the valve core is equipped with seal rubber ring. and its tail portion of equipped with guide column surface which is cover-mounted in the regulating screw-plug, the seal rubber ring blocks the channel, the tail portion of valve body is equipped with regulating screw-plug, and the spring is mounted between the valve core and regulating screw-plug. Its regulation accuracy is high, regulation is easy, volume displacement is large and its structure is simple.
Description
The present invention relates to safety valve for alkaline cell.
Existing market alkalinous metal housing battery all must be provided with safety valve, and its effect is to prevent that the gas pressure of the generation of battery the inside is too high, running into the gas that in emergency circumstances can get rid of the inside battery generation rapidly, guarantees the fail safe of battery.For example, Ni-MH battery, nickel-cadmium cell all can produce gas in charge and discharge process, and particularly gas production rate is bigger the high current charge-discharge later stage.If open ports allows its effusion, certainly will cause electrolyte to run off fast, battery is dry, and battery life shortens greatly.If complete closed, it is very high that cell internal pressure is risen to, and makes battery that the danger of blast be arranged, and therefore, alkaline battery all must be installed the safety valve that guarantees that cell safety uses, make battery not only safety but also life-span long.Existing all is following structure with safety valve, sees shown in the accompanying drawing 1, and it is by cap A, ball sealer B, and valve base C forms.Suppress 3 to 4 small boss D on the cap A plate-like edge, spot weld on the valve base C with the boss D position of spot welding machine during assembling cap A.Crush seal B when the pressure in the air inlet E raises, make ball sealer B distortion, occur a gap between ball sealer B and the valve base C, E chamber gas just enters in the atmosphere by the passage that forms between boss D on this gap and the cap A and the valve base C, and the E cavity pressure just reduces.Along with the E cavity pressure reduces, the distortion of ball sealer B just reduces thereupon, and the gap between ball sealer B and the valve base C is also along with reducing, and deflation rate is also corresponding to be reduced.When the E cavity pressure was lower than set point, the gap was zero between ball sealer B and the valve base C, stops exhaust.The characteristics of this safety valve are: simple in structure, in light weight, volume is little.But this safety valve exists several big defectives: (1) is opened pressure and is difficult to control, and error is bigger, about ± 20%.If will be controlled at opening pressure ± 10% can be very high with interior percent defective.Open pressure in case welding is gone up and surpass maximum, this part product just becomes waste product.(2) owing to this safety valve is to open valve by gas pressure compression seal deformation of ball to discharge unnecessary gas fully, the ball sealer distortion is very little, so open degree is very limited, air displacement is also just very little, causes off-load untimely.Charging later stage battery producing gas amount is more, if can not in time discharge, gas pressure can swash acute the rising, causes explosion hazard, and this danger is bigger during battery short circuit.(3) because ball sealer had both been made encapsulant, make elastomeric material again, when after after a while, rubber can wear out, elasticity variation, shape also can change to some extent, and safety valve is opened pressure and changed also just very greatly, may cause and not open, or it is not in place to open Hou Huiguan, cause and climb alkali.
The purpose of this invention is to provide a kind of safety valve for alkaline cell, it is characterized in that by the size that the pressure size that is added on the spring is regulated outlet passageway automatically volume is little, opening pressure is regulated easily, the precision height, and air displacement is big, and adaptability is strong.
The present invention is realized by following technical scheme: it comprises valve body and spool, the end of valve body is provided with air inlet, it also comprises spring in addition, regulate plug screw and O-ring seal, above air inlet, have pore on the wall of valve body, the inner conical surface of valve body and the neck of spool form passage, air inlet is connected with pore by passage, the neck of spool is equipped with O-ring seal, afterbody is provided with the guiding cylinder, the O-ring seal blocking channel, the afterbody of valve body is equipped with the adjusting plug screw, and the guiding cylinder is enclosed within regulates the plug screw the inside, and spring is installed in spool and regulates between the plug screw.
The afterbody of above-mentioned described valve body is threaded with the adjusting plug screw.
Above-mentioned described O-ring seal is to be caused by elastomeric material.
The present invention compared with prior art has following advantage: 1) according to the battery operating position, regulates the stretching, extension situation that plug screw just can be adjusted spring, just can adjust and open pressure by adjusting, because spring rate is little, so the degree of regulation height, and regulate easily; 2) air displacement is big, because along with the pressure of battery the inside rises, spring is compressed, the passage of exhaust is opened, it is linear that height of opening and spool top pressure are substantially, and promptly the gas output of passage can raise and linear change with the pressure of battery the inside, therefore safer reliable; 3) simple in structure, assembling easily; Assembly quality guarantees easily; 4) design of part of product is simple, handling ease, and product quality is controlled easily, no waste product.
Below in conjunction with accompanying drawing the present invention is done detailed explanation:
Fig. 1 is traditional safety valve for alkaline cell structural representation;
Fig. 2 is a structural representation of the present invention.
As shown in Figure 2, the present invention includes valve body (1) and spool (2), the end of valve body (1) is provided with air inlet (6), it also comprises spring (3) in addition, regulate plug screw (4) and O-ring seal (5), top in air inlet (6), have pore (7) on the wall of valve body (1), the inner conical surface (10) of valve body (1) forms passage (8) with the neck of spool (2), air inlet (6) is connected with pore (7) by passage (8), the neck of spool (2) is equipped with O-ring seal (5), afterbody is provided with guiding cylinder (9), O-ring seal (5) blocking channel (8), the afterbody of valve body (1) is equipped with regulates plug screw (4), guiding cylinder (9) is enclosed within regulates plug screw (4) the inside, and spring (3) is installed in spool (2) and regulates between the plug screw (4).
The afterbody of valve body (1) is threaded with adjusting plug screw (4) in addition.O-ring seal (5) is to be caused by elastomeric material.
Below in conjunction with Fig. 2, the principle of work and power of the present invention is described: air inlet (6) communicates with the battery inner chamber, insert specific purpose tool in two holes (11) of regulating plug screw (4) and rotation adjusting plug screw (4), spring (3) is compressed or extends, the active force that acts on O-ring seal (5) just increases or reduces.We only need rotation to regulate plug screw (4), make air inlet (6) exhaust pressure equal setting, pull up specific purpose tool, regulate work constipation bundle.Because the screw thread of regulating between plug screw (4) and the valve body (1) belongs to special closely-pitched; Helical angle is very little, and self-locking property is fairly good, does not need any locking device after therefore adjusting finishes.When cell internal pressure is elevated to greater than the authorized pressure value, gas acts on power on O-ring seal (5) and the spool (2) greater than the elastic force of regulating spring 3, O-ring seal (5) is just pushed away inner conical surface (10), thereby open passage (8), inside battery gas is just discharged by pore (7) through passage (8) from air inlet (6), and cell internal pressure just descends thereupon.When cell internal pressure was lower than setting, O-ring seal (5) and spool (2) closed next time in the effect of spring (3), closing passage (8), and inside battery gas no longer discharges, and cell internal pressure is remained in the setting.
Used spring (3) rigidity of the present invention is less, and adopts the load up ageing of heating to handle, and stiffness variation is minimum, and therefore, the power that acts on the O-ring seal (5) can remain unchanged for a long time.Because regulating spring rigidity is little, it is very high that this has just determined safety valve to open pressure precision, can be controlled at ± 5% in.When the battery chamber pressure increases not for a long time, passage (8) open degree is just bigger, and air displacement is also just bigger.When battery produces the speed of gas when very big, safety valve also can in time be discharged unnecessary gas.Overcharge, cross and to put experiment and to do internal short-circuit, external short circuit and bonfire test under the electricity condition being full of with the 100Ah battery, the present invention's safety valve all can guarantee its safety.Because safety valve is opened the pressure precision height and air displacement is big, the battery case reduced thickness to reduce battery container weight, can have been improved the gravimetric specific energy of battery.
O-ring seal (5) be installed in make O-ring seal (5) in spool (2) annular groove Deformation control in very little scope and the afterbody of spool (2) be provided with guiding cylinder (9), thereby solve effectively since encapsulant distortion and valve open after the poorly sealed leakage that produces that causes of Hui Guan position change.
Claims (3)
1, safety valve for alkaline cell, comprise valve body (1) and spool (2), the end of valve body (1) is provided with air inlet (6), it is characterized in that it also comprises spring (3), regulate plug screw (4) and O-ring seal (5), top in air inlet (6), have pore (7) on the wall of valve body (1), the inner conical surface (10) of valve body (1) forms passage (8) with the neck of spool (2), air inlet (6) is connected with pore (7) by passage (8), the neck of spool (2) is equipped with O-ring seal (5), afterbody is provided with guiding cylinder (9), O-ring seal (5) blocking channel (8), the afterbody of valve body (1) is equipped with regulates plug screw (4), guiding cylinder (9) is enclosed within regulates plug screw (4) the inside, and spring (3) is installed in spool (2) and regulates between the plug screw (4).
2, safety valve for alkaline cell according to claim 1 is characterized in that the afterbody of valve body (1) is threaded with adjusting plug screw (4).
3, safety valve for alkaline cell according to claim 1 is characterized in that O-ring seal (5) is to be caused by elastomeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00117513A CN1346157A (en) | 2000-10-01 | 2000-10-01 | Safety valve for alkaline cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00117513A CN1346157A (en) | 2000-10-01 | 2000-10-01 | Safety valve for alkaline cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1346157A true CN1346157A (en) | 2002-04-24 |
Family
ID=4586877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00117513A Pending CN1346157A (en) | 2000-10-01 | 2000-10-01 | Safety valve for alkaline cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1346157A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324478A (en) * | 2011-08-25 | 2012-01-18 | 奇瑞汽车股份有限公司 | Battery safety valve and vacuum-pumping and pressure-releasing method thereof |
| CN102569694A (en) * | 2011-12-28 | 2012-07-11 | 刘立文 | Anti-explosion device for storage battery convey car |
| CN103036263A (en) * | 2011-10-10 | 2013-04-10 | 海洋王照明科技股份有限公司 | Charging port assembly and lamp |
| CN103133736A (en) * | 2013-02-04 | 2013-06-05 | 力帆实业(集团)股份有限公司 | Inertia valve for electric automobile |
| US10439184B2 (en) | 2015-07-14 | 2019-10-08 | Toyota Jidosha Kabushiki Kaisha | Nonaqueous secondary battery |
-
2000
- 2000-10-01 CN CN00117513A patent/CN1346157A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324478A (en) * | 2011-08-25 | 2012-01-18 | 奇瑞汽车股份有限公司 | Battery safety valve and vacuum-pumping and pressure-releasing method thereof |
| CN102324478B (en) * | 2011-08-25 | 2014-06-11 | 奇瑞汽车股份有限公司 | Battery safety valve and vacuum-pumping and pressure-releasing method thereof |
| CN103036263A (en) * | 2011-10-10 | 2013-04-10 | 海洋王照明科技股份有限公司 | Charging port assembly and lamp |
| CN103036263B (en) * | 2011-10-10 | 2015-05-06 | 海洋王照明科技股份有限公司 | Charging port assembly and lamp |
| CN102569694A (en) * | 2011-12-28 | 2012-07-11 | 刘立文 | Anti-explosion device for storage battery convey car |
| CN103133736A (en) * | 2013-02-04 | 2013-06-05 | 力帆实业(集团)股份有限公司 | Inertia valve for electric automobile |
| US10439184B2 (en) | 2015-07-14 | 2019-10-08 | Toyota Jidosha Kabushiki Kaisha | Nonaqueous secondary battery |
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| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |