CN102340019B - Sealing plate for cell and cell with it - Google Patents
Sealing plate for cell and cell with it Download PDFInfo
- Publication number
- CN102340019B CN102340019B CN201010237330.4A CN201010237330A CN102340019B CN 102340019 B CN102340019 B CN 102340019B CN 201010237330 A CN201010237330 A CN 201010237330A CN 102340019 B CN102340019 B CN 102340019B
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- CN
- China
- Prior art keywords
- battery
- cylinder portion
- projection cylinder
- base plate
- hush panel
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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
Abstract
The invention aims to provide a sealing plate for a cell and a cell with the sealing plate. The sealing plate (9) for a cell is used for sealing the opening part of a cell shell (1) through a liner (10), wherein, the sealing plate (9) consists of: a base plate (5) with valve holes (4), a terminal cover (7) with air vents, a valve body (8) between the base plate (5) and the terminal cover (7), a prominent tube (5a) formed on the base plate (5) towards an opposite direction of the valve body (8). The bottom of the prominent tube (5a) is in connection with a lead of the cell, and the valve holes (4) are formed on the side wall of the prominent tube (5a).
Description
Technical field
The present invention relates to a kind of battery by hush panel and there is the battery of this hush panel.
Background technology
As everyone knows, battery is generally divided into physical battery and chemical cell, and chemical cell refers to and by the chemical reaction between both positive and negative polarity, chemical energy is converted into the device of electric energy.According to whether reusing, be divided into primary cell and secondary cell.Primary cell refers to the battery that cannot charge, only can discharge, as zinc-manganese, alkaline dry battery, and lithium button battery, the sub-battery of lithium etc.Secondary cell refers to the battery that can repeatedly discharge and recharge recirculation, as plumbic acid, NI-G, ni-mh, lithium ion, lighium polymer, fuel, zinc, aluminium, magnesium air cell etc.
Development along with electronic product, mobile phone, palm electronic product universal in recent years particularly, secondary cell (such as NI-G, ni-mh, lithium ion battery etc.) can repeat to discharge and recharge because of it, easy to use, capacity is high, the small and exquisite advantage and obtain fast development such as be easy to carry., these batteries are also had higher requirement meanwhile, as high power capacity, high power, high security etc.
As the countermeasure that improves battery capacity, thereby generally take the width that increases pole plate to increase the capacity that active material improves battery, in the situation that not changing outside batteries size, the inevitable corresponding minimizing of inside battery survival space.Such battery, when discharging and recharging, produces gas because the reaction of electrode and electrolyte makes electrolyte decomposition, under some specific condition, during as external short circuit, can make battery temperature sharply raise, and internal pressure sharply rises.If inside battery survival space is insufficient large, pressure can not get timely release, the battery safety issue such as can blast.Therefore, be necessary to reach before breaking the gas in battery is emitted rapidly outside battery at battery.
For this problem, in the battery of being everlasting, vent valve is set, when inside battery reaches certain pressure, by opening vent valve, internal pressure makes gas discharge to the external world from inside battery, reaches and keeps cell internal pressure to maintain the object below safe pressure.(with reference to patent documentation 1)
As shown in Figure 4, use at present that secondary cell (take Ni-MH battery as example) is generally as follows comparatively widely: comprise metal shell, hush panel (base plate, terminal cap, vent valve), for the lead-in wire of electric connection terminal and following pole plate group and be sealed in this metal shell and closed chamber that base plate forms in the pole plate group being rolled into by positive plate, barrier film and negative plate and infiltrate the electrolyte inside this pole plate group.
The assembly process of above-mentioned secondary cell is generally as follows: lead-in wire one end is first welded as a whole with positive plate, by coiling operation, be wound into pole plate group with negative plate, barrier film again, then by inserting shell operation, this pole plate group is inserted in metal-back, through ditch, enter operation, on housing, form the annulus of a circle indent to play the effect of fixed polar plate group, inject afterwards electrolyte, and will the go between other end and base plate welding, finally by sealing process, form complete battery.
But as can be seen from Figure 4, in assembling battery or use procedure, because the material of battery-use lead is generally pure nickel or iron surface nickel plating and conventionally forms rectangular sheet, because it is flexible, be easy to bending, so easily make lead-in wire cover the valve opening of the bottom of base plate during assembling, and cause battery exhaust not smooth.And, when transportation or carrying, owing to clashing into wait, also can cause the movable valve opening that covers of lead-in wire.In addition, when battery is used, inside battery gas is poured into valve opening and is also easily caused lead-in wire to cover valve opening.Above-mentioned situation all can cause the generation of the unsafe problems such as battery explosion.
For this situation, there is again the periphery proposing at bottom center hole, salient point is set, the technology that causes base plate to be gone between to prevent lead-in wire laminating base plate to stop up etc.(with reference to patent documentation 2)
Yet above-mentioned technology also can not fundamentally be eliminated the possibility of lead-in wire laminating base plate, such as when too fast too high the fit situation etc. of valve opening of lead-in wire that causes of air pressure.And, because lead-in wire is longer, when it has occupied battery participating space, also easily and the metal shell sidewall contact of battery and make internal short-circuit of battery.
Patent documentation 1: China Patent No. ZL 01109154.1
Patent documentation 2: China Patent No. ZL200920003345.7
Summary of the invention
The present invention be directed to that above-mentioned situation makes, its object is to provide a kind of battery by hush panel and has the battery of this hush panel, can guarantee that the valve opening on base plate remains unimpeded, thereby improves the fail safe of battery.
Hush panel (9) for battery of the present invention, via liner (10), the opening portion of battery container (1) is sealed, wherein, this hush panel (9) has: possess the base plate (5) of valve opening (4), the terminal cap (7) that possesses steam vent (6) and the valve body (8) between this base plate (5) and terminal cap (7)
On above-mentioned base plate (5), towards the direction ground projection contrary with valve body (8), be formed with projection cylinder portion (5a), the bottom of above-mentioned projection cylinder portion (5a) is for being connected with battery lead, and above-mentioned valve opening (4) is formed on the sidewall of this projection cylinder portion (5a).
According to foregoing invention, valve opening is formed on the sidewall of the projection cylinder 5a of portion, not in same level, and with respect to the prolonging direction of lead-in wire opening vertically, therefore, can prevent that lead-in wire is because the compression shock compared with large stops up valve opening with lead-in wire 11 spot welding end.Meanwhile, because the spot welding end of lead-in wire is positioned at the bottom of the projection cylinder 5a of portion, so shorten than the length of prior art lead-in wire, reduced the possibility with battery container sidewall contact.
And then, above-mentioned for battery in hush panel (9), the aperture area of above-mentioned valve opening 4 with respect to above-mentioned projection cylinder portion (5a) sidewall week area percent opening be 40%～80%.
According to foregoing invention, by making percent opening, be 40%～80%, can guarantee that inside battery gas is discharged to outside by valve opening swimmingly.
And then above-mentioned for battery in hush panel (9), above-mentioned projection cylinder portion (5a) is formed on the central part of above-mentioned base plate (5).
According to foregoing invention, by making above-mentioned projection cylinder portion be formed on the central part of base plate, can further reduce the possibility of lead-in wire and battery container sidewall contact.
And then above-mentioned for battery in hush panel (9), above-mentioned projection cylinder portion (5a) is for there being round-ended cylinder shape, and this projection cylinder portion (5a) integrally formed and wall thickness is more than or equal to above-mentioned base plate (5) with above-mentioned base plate (5).
According to foregoing invention, projection cylinder portion and base plate are one-body molded, can reduce the unsteadiness that bring battery connecting portion office, and easily realize on manufacturing.In addition, in the situation that the aperture opening ratio of projection cylinder portion is larger, make its wall thickness thicker, be conducive to increase the intensity of projection cylinder portion itself.
And then above-mentioned for battery in hush panel (9), above-mentioned valve opening (4) forms more than three, is arranged in equally spacedly respectively on the circumference of projection cylinder portion (5a).
According to foregoing invention, valve opening is evenly distributed on the sidewall of projection cylinder portion,
In addition, the present invention also provides a kind of battery, has: with the battery container of opening portion; Be inserted into the pole plate group that comprises positive plate and negative plate in above-mentioned housing; Lead-in wire, for pole plate group is electrically connected to electrode terminal, one end of this lead-in wire is connected with above-mentioned pole plate group, and the other end is connected with the bottom of above-mentioned projection cylinder portion; And the above-mentioned battery hush panel that above-mentioned housing is sealed.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional drawing of the battery of embodiments of the invention 1.
Fig. 2 is the A portion enlarged drawing in Fig. 1.
Fig. 3 is the vertical view of base plate.
Fig. 4 is prior art figure.
Symbol description
1 battery container
2 ditches enter portion
3 pole plate groups
4 valve openings
5 base plates
5a projection cylinder portion
6 steam vents
7 terminal cap
8 valve bodies
9 hush panel
10 liners
11 lead-in wires
Embodiment
Utilize accompanying drawing to describe the specific embodiment of the present invention below.
Fig. 1 is the longitudinal sectional view of the battery of embodiment of the present invention.In Fig. 1, battery container 1 is the metal cylinder of an end opening, its opening portion seals by metal hush panel 9 via liner 10, above-mentioned liner 10 can and keep airtight with the top electric insulation of this battery container 1, in addition, by ditch, enter that technique etc. is processed the peristome of battery container 1, liner 10 and hush panel 9 and fixing hush panel 9, aftermentioned pole plate group is also fixed simultaneously.In above-mentioned battery container 1, pole plate group 3 and electrolyte are housed, to be positive plates relative with negative plate clamping barrier film ground and be wound as gyrate parts with this clamp position for this pole plate group 3.Battery container 1 in present embodiment is cylindric, but also can form square other shapes such as grade.
Below hush panel 9 is described.
In hush panel 9, that base plate 5 and the metal terminal of cap shape cover is 7 electric, be mechanically connected, and in the circumferential edges of terminal cap 7, is formed with a plurality of and outside steam vent 6 being communicated with.Between this base plate 5 and terminal cap 7, form valve chamber 12, and in this valve chamber 12, be built-in with the elastic valve body 8 of compressive state.
Above-mentioned base plate 5 is not directly to have as shown in Figure 4 an independent valve opening at central part, but at central part to a side contrary with valve body, be that inside battery lateral process has the projection cylinder 5a of portion.Specifically, from the center of base plate 5, along radial direction, outwards with certain size, draw circle, from this circumferential inside battery lateral process, form this projection cylinder 5a of portion, this projection cylindrical portion 5a has formed round-ended cylinder shape.Preferably make projection cylinder portion and base plate integrally formed, can reduce the unsteadiness that bring battery connecting portion office, and easily realize on manufacturing.Sidewall at the projection cylinder 5a of portion offers four valve openings 4, lays respectively at the sidewall of the projection cylinder 5a of portion on the position of the circumferencial direction quartering.In addition, also the wall thickness of preferred projection cylinder portion is more than or equal to this base plate 5, when valve opening percent opening is larger, makes the thicker intensity that can strengthen projection cylinder portion of wall thickness of projection cylinder portion, prevents from being subject to gas shock and distortion etc.
In addition, total aperture area of described four valve openings 4 is 40%～80% with respect to the long-pending percent opening of the projection cylinder 5a of portion sidewall surfaces, certainly can adopt other mode perforates, such as offering 2 holes or offering groove, a plurality of apertures etc., but be preferably, offer 3 above holes, meet above-mentioned percent opening.In addition, in the situation that the aperture opening ratio of projection cylinder portion is larger, preferably make its wall thickness thicker, be conducive to increase the intensity of projection cylinder portion itself.
Above-mentioned elastic valve body 8 is generally flexible metal spring valve processed or the rubber valve that utilizes metal spring or rubber, fits tightly (as shown in Figure 2) under normal conditions, thereby the valve opening 4 of above-mentioned base plate 5 is sealed with the root of the above-mentioned projection cylinder 5a of portion.When inner pressure of battery rises to authorized pressure when above, valve body 8 produces deformation, no longer fits tightly with above-mentioned root, and valve opening 4 is open, and the gas in battery is emitted to outside via the steam vent terminal cap 7 from valve opening 4, thereby reduces inner pressure of battery.Then, in the time of under inner pressure of battery drops to authorized pressure, shape when valve body 8 returns to normality, fits tightly with above-mentioned root again, and valve opening 4 is closed.
One end of lead-in wire 11 is connected with pole plate group, the other end is welded in the bottom outside of the projection cylinder 5a of portion of base plate 5, when one end of lead-in wire 11 is connected with negative plate, what its other end connected is exactly negative terminal plate, and when one end of lead-in wire 11 is connected with positive plate, what its other end connected is exactly positive terminal plate, realizes being by this way electrically connected to of pole plate group and terminal.
With respect to lead-in wire 11 spot welding position, valve opening 4 is positioned on the face vertical with residing of this position, and therefore, when the interior pressure sudden change of battery and during lead-in wire flexural deformation etc., lead-in wire can not move and block because of affected by air pressure etc. valve opening.In addition, due to projection cylinder, the 5a of portion forms highlightedly to inside battery, distance between the bottom of the projection cylinder 5a of portion and pole plate group end is short, therefore go between 11 while being welded to the bottom of the projection cylinder 5a of portion, the wire length that one end of lead-in wire spot welding and lead-in wire are drawn between the end of pole plate group is shorter than the corresponding length in Fig. 4, for example, this wire length in Fig. 4 is 13～14mm, and this wire length in Fig. 1 of the present invention is 10～11mm.By realize above-mentioned pole plate group with shorter lead-in wire, be electrically connected to terminal board, can also reduce lead-in wire and in battery survival space, arbitrarily fit to battery container or seal valve opening equally likely possibility.
In addition, in order to guarantee that valve opening is unimpeded, lead-in wire in Fig. 4 must be put and be welded in valve opening position in addition, that is to say the position of departing from base plate central part, therefore, the bending place of lead-in wire is close to the sidewall of battery container, being given a shock, during impact etc., lead-in wire is easy to the sidewall contact with battery container 1 because himself is flexible, cause internal short-circuit of battery.
With respect to this, lead-in wire in present embodiment is welded to the position of the central part of base plate 5, and the bending place of lead-in wire is away from the sidewall of battery container 1, and, lead-in wire in Length Ratio Fig. 4 is short, therefore almost can avoid lead-in wire to make the danger of internal short-circuit of battery with battery container 1 sidewall contact.
In addition, because having enough spaces, needs hold the projection cylinder 5a of portion, therefore, in the situation that guaranteeing outside batteries size constancy, gauge that can attenuate valve body 8.Meanwhile, attenuate during the gauge of valve body 8, the survival space of inside battery has further increased, this has also played certain effect to improving battery capacity.
Utilize Fig. 3 to describe the set-up mode of the valve opening 4 on the projection cylinder 5a of portion below.
Fig. 3 is the vertical view of the projection cylinder 5a of portion of present embodiment.Fig. 3 (a) is the vertical view of the projection cylinder 5a of portion in Fig. 1, and Fig. 3 (b) is the variation of the projection cylinder 5a of portion.
In Fig. 3 (a), valve opening 4 amounts to 4, connects and forms respectively on the quartering position on the sidewall of the projection cylinder 5a of portion.Also can, as shown in Fig. 3 (b), on the trisection posistion on the sidewall of the projection cylinder 5a of portion, connect and form 3 valve openings 4 altogether.
The percent opening of above-mentioned each embodiment meets 40%～80%, and it is more than 3 being preferably formed, and is equidistantly arranged in respectively on the circumference of valve opening, thereby guarantees that gas energy in battery is smooth and easy and be rejected in time outside.
Below, the installation method of battery is described.
First weld with positive plate one end of lead-in wire 11 of the present invention, having welded go between 11 positive plate and negative plate clips barrier film and is wound into pole plate group 3 by coiling operation, by inserting shell operation, this pole plate group 3 is inserted in battery container 1 again, through ditch, enter operation, on housing 1, form the annulus of a circle indent to play the effect of fixing this pole plate group 3, then to the interior injection electrolyte of battery container 1.Then, above-mentioned battery semi-finished product are fixed in a special fixture, by the bottom outside of lead-in wire 11 the other end and the projection cylinder 5a of portion of base plate 5, be that the spot welding of inside battery side is connected.
On the other hand, by the hush panel 9 forming together with being assembled into base plate 5 by terminal cap 7, valve body 8 in advance, via the liner 10 as airtight member and process the peristome that is sealed in battery container 1 by ca(u)lk, realize thus whole hush panel 9 to the assembling of battery container 1.Lead-in wire 11 after above-mentioned such assembling, in the inner bending of inside battery survival space, become generally'S '-shaped, its length is short than the corresponding length going between in Fig. 4, reduced the possibility of stopping up valve port 4, and not can with the sidewall contact of battery container 1, guaranteed that the valve opening on base plate is unobstructed all the time, and improved battery security.
The embodiment that the invention is not restricted to mention in this specification, only otherwise depart from purport of the present invention, can carry out various distortion.
Claims (7)
1. a hush panel for battery (9), via liner (10), the opening portion of battery container (1) is sealed, wherein, this hush panel (9) has: possess valve opening (4) base plate (5), possess the valve body (8) of terminal cap (7) and the rubber system between this base plate (5) and terminal cap (7) of steam vent (6), it is characterized in that
On described base plate (5), towards the direction contrary with described valve body (8), heave and be formed with central authorities and heave portion, in these central authorities, heave in portion and further towards the direction projection contrary with described valve body (8), be formed with projection cylinder portion (5a), described valve body (8) fits tightly to cover mode and this root of the root of described projection cylinder portion (5a), the bottom of described projection cylinder portion (5a) is for being connected with contact conductor, and described valve opening (4) is formed on the sidewall of this projection cylinder portion (5a).
2. hush panel (9) for battery as claimed in claim 1, is characterized in that, the aperture area of described valve opening (4) with respect to described projection cylinder portion (5a) sidewall week area percent opening be 40%～80%.
3. hush panel (9) for battery as claimed in claim 1, is characterized in that, described projection cylinder portion (5a) is integrally formed with described base plate (5), and this projection cylinder portion (5a) has formed round-ended cylinder shape.
4. hush panel (9) for battery as claimed in claim 1, is characterized in that, the wall thickness of described projection cylinder portion (5a) is more than or equal to described base plate (5).
5. hush panel (9) for battery as claimed in claim 1, is characterized in that, described projection cylinder portion (5a) is formed on the central part of described base plate (5).
6. the hush panel for battery (9) as described in any one in claim 1 to 5, is characterized in that, described valve opening (4) is formed with more than 3, is arranged in equally spacedly respectively on the circumference of described projection cylinder portion (5a).
7. a battery, is characterized in that, has: with the battery container (1) of opening portion; Be inserted into the pole plate group (3) that comprises positive plate and negative plate in described housing (1); Lead-in wire (11), for making pole plate group (3) be electrically connected to electrode terminal; And described housing (1) is sealed and serves as the hush panel for battery (9) described in any one in the claim 1 to 6 of above-mentioned electrode terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010237330.4A CN102340019B (en) | 2010-07-23 | 2010-07-23 | Sealing plate for cell and cell with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010237330.4A CN102340019B (en) | 2010-07-23 | 2010-07-23 | Sealing plate for cell and cell with it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102340019A CN102340019A (en) | 2012-02-01 |
| CN102340019B true CN102340019B (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010237330.4A Active CN102340019B (en) | 2010-07-23 | 2010-07-23 | Sealing plate for cell and cell with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102340019B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106133945B (en) * | 2014-07-15 | 2019-12-17 | 三洋电机株式会社 | Electricity storage device |
| KR102010038B1 (en) * | 2015-07-15 | 2019-10-21 | 주식회사 엘지화학 | Cap assembly and secondary battery |
| CN109860448A (en) * | 2019-01-03 | 2019-06-07 | 王生义 | A kind of cap assemblies and battery for battery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1200199A (en) * | 1995-10-31 | 1998-11-25 | 松下电器产业株式会社 | Explosion-proof seal plate for enclosed type cell and production method thereof |
| CN1315748A (en) * | 2000-03-30 | 2001-10-03 | 三洋电机株式会社 | Battery and its manufacturing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201352577Y (en) * | 2009-01-23 | 2009-11-25 | 松下能源(无锡)有限公司 | Lead wire for battery, seal plate for battery and battery |
| CN201789004U (en) * | 2010-07-23 | 2011-04-06 | 松下能源(无锡)有限公司 | Sealing plate for battery and battery having sealing plate |
-
2010
- 2010-07-23 CN CN201010237330.4A patent/CN102340019B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1200199A (en) * | 1995-10-31 | 1998-11-25 | 松下电器产业株式会社 | Explosion-proof seal plate for enclosed type cell and production method thereof |
| CN1315748A (en) * | 2000-03-30 | 2001-10-03 | 三洋电机株式会社 | Battery and its manufacturing method |
Also Published As
| Publication number | Publication date |
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| CN102340019A (en) | 2012-02-01 |
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