CN102340019A - Sealing plate for cell and cell with it - Google Patents
Sealing plate for cell and cell with it Download PDFInfo
- Publication number
- CN102340019A CN102340019A CN2010102373304A CN201010237330A CN102340019A CN 102340019 A CN102340019 A CN 102340019A CN 2010102373304 A CN2010102373304 A CN 2010102373304A CN 201010237330 A CN201010237330 A CN 201010237330A CN 102340019 A CN102340019 A CN 102340019A
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- battery
- projection tube
- base plate
- tube portion
- 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
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- Gas Exhaust Devices For Batteries (AREA)
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 with hush panel and battery with this hush panel.
Background technology
As everyone knows, battery generally is divided into physical battery and chemical cell, and chemical cell is meant the device that chemical energy is converted into electric energy through the chemical reaction between the both positive and negative polarity.Be divided into primary cell and secondary cell according to whether reusing.Primary cell is meant the battery that can't charge, only can discharge, like zinc-manganese, alkaline dry battery, and lithium button battery, the inferior battery of lithium etc.Secondary cell is meant the battery that can discharge and recharge recirculation repeatedly, like plumbic acid, NI-G, ni-mh, lithium ion, lighium polymer, fuel, zinc, aluminium, magnesium air cell etc.
Development along with electronic product; Popularizing of mobile phone, palm electronic product in recent years particularly; Secondary cell (for example NI-G, ni-mh, lithium ion battery etc.) can repeat to discharge and recharge because of it, and is easy to use, capacity is high, small and exquisite advantage and obtain fast development such as be easy to carry.Simultaneously, these batteries are also had higher requirement, like high power capacity, high power, high security or the like.
As the countermeasure that improves battery capacity, thereby the width of generally taking to increase pole plate increases the capacity that active material improves battery, under the situation that does not change the outside batteries size, and the inevitable corresponding minimizing in the remaining space of inside battery.Such battery produces gas owing to the reaction of electrode and electrolyte makes electrolyte decomposition when discharging and recharging, under some specific condition, during like external short circuit, battery temperature is sharply raise, and internal pressure sharply rises.If the remaining space of inside battery is insufficient big, pressure can not get timely release, battery safety issue such as can blast.Therefore, be necessary to reach and the gas in the battery emitted before breaking rapidly outside battery at battery.
To this problem, in the battery of being everlasting vent valve is set, when inside battery reached certain pressure, through opening vent valve, internal pressure made gas discharge to the external world from inside battery, reached to keep cell internal pressure to maintain the purpose below the safe pressure.(with reference to patent documentation 1)
As shown in Figure 4, uses at present that secondary cell (being example with Ni-MH battery) is generally following comparatively widely: comprise metal shell, hush panel (base plate, terminal cap, vent valve), be used 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 and the electrolyte of infiltration inside this pole plate group that are rolled into by positive plate, barrier film and negative plate.
The assembly process of above-mentioned secondary cell is generally following: the end that goes between is welded as a whole with positive plate earlier; Be wound into the pole plate group with negative plate, barrier film through the coiling operation again, through inserting the shell operation this pole plate group inserted in the metal-back then, go into operation through ditch; The annulus that on housing, forms a circle indent is to play the effect of fixed polar plate group; Inject electrolyte afterwards, and will the go between other end and base plate welding, complete battery formed through sealing process at last.
But as can be seen from Figure 4; In assemble or use; Because the material of battery-use lead is generally pure nickel or iron surface nickel plating and forms rectangular sheet usually; Be easy to bending because of it is flexible, thus make lead-in wire cover the valve opening of the bottom of base plate easily during assembling, and cause the battery exhaust not smooth.And, when transportation or carrying, also can cause the movable valve opening that covers of lead-in wire owing to bump waits.In addition, when battery used, inside battery gas was poured into valve opening and is also caused lead-in wire to cover valve opening easily.Above-mentioned situation all can cause the generation of unsafe problems such as battery explosion.
To this situation, the periphery of proposition at bottom center hole arranged again, salient point is set, cause technology that base plate stopped up by going between etc. to prevent to go between the applying base plate.(with reference to patent documentation 2)
Yet above-mentioned technology also can not fundamentally be eliminated the possibility of lead-in wire applying base plate, for example when too fast too high lead-in wire fit the situation etc. of valve opening that causes of air pressure.And because lead-in wire is longer, it has occupied battery when participating in the space, also contacts with the metal shell sidewall of battery easily and makes internal short-circuit of battery.
Patent documentation 1: Chinese patent ZL 01109154.1
Patent documentation 2: Chinese patent ZL200920003345.7
Summary of the invention
The present invention be directed to that above-mentioned situation makes, its purpose is to provide a kind of battery with hush panel and battery with this hush panel, and it is unimpeded to guarantee that valve opening on the base plate remains, thus the fail safe that improves battery.
Battery of the present invention is with hush panel (9); Seal via the opening portion of liner (10) battery container (1); 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 the above-mentioned base plate (5), be formed with projection tube portion (5a) towards the direction ground projection opposite with valve body (8), the bottom of above-mentioned projection tube portion (5a) is used for being connected with battery lead, and above-mentioned valve opening (4) is formed on the sidewall of this projection tube portion (5a).
According to foregoing invention, valve opening is formed on the sidewall of the projection tube 5a of portion, is not in same horizontal plane with lead-in wire 11 spot welding end, and with respect to the prolonging direction of lead-in wire opening vertically, therefore, can prevent that the compression shock that goes between owing to bigger from stopping up valve opening.Simultaneously, because the spot welding end of lead-in wire is positioned at the bottom of the projection tube 5a of portion,, reduced the possibility that contacts with the battery container sidewall so shorten than the length of prior art lead-in wire.
And then above-mentioned battery is with in the hush panel (9), and the aperture area of above-mentioned valve opening 4 is 40%～80% with respect to the percent opening of all areas of sidewall of above-mentioned projection tube portion (5a).
According to foregoing invention, be 40%～80% through making percent opening, can guarantee that inside battery gas is discharged to the outside through valve opening swimmingly.
And then above-mentioned battery is with in the hush panel (9), and above-mentioned projection tube portion (5a) is formed on the central part of above-mentioned base plate (5).
According to foregoing invention, be formed on the central part of base plate through making above-mentioned projection tube portion, can further reduce the possibility that lead-in wire contacts with the battery container sidewall.
And then above-mentioned battery is with in the hush panel (9), and above-mentioned projection tube portion (5a) is for there being round-ended cylinder shape, and this projection tube portion (5a) with above-mentioned base plate (5) integrally formed and wall thickness more than or equal to above-mentioned base plate (5).
According to foregoing invention, projection tube portion and base plate are one-body molded, can reduce the unsteadiness that bring battery the connecting portion office, and on making, realize easily.In addition, under the bigger situation of the aperture opening ratio of projection tube portion, make its wall thickness thicker, help increasing the intensity of projection tube portion itself.
And then above-mentioned battery is with in the hush panel (9), and above-mentioned valve opening (4) forms more than three, is arranged in equally spacedly respectively on the circumference of projection tube portion (5a).
According to foregoing invention, valve opening is evenly distributed on the sidewall of projection tube portion,
In addition, the present invention also provides a kind of battery, has: the battery container that has opening portion; Be inserted into the pole plate group that comprises positive plate and negative plate in the above-mentioned housing; Lead-in wire is used to make the pole plate group to be electrically connected with electrode terminal, and an 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 tube portion; And the above-mentioned battery that above-mentioned housing seals used hush panel.
Description of drawings
Fig. 1 is the longitudinal sectional drawing of the battery of embodiments of the invention 1.
Fig. 2 is the A portion enlarged drawing among Fig. 1.
Fig. 3 is the vertical view of base plate.
Fig. 4 is prior art figure.
Symbol description
1 battery container
2 ditches are gone into portion
3 pole plate groups
4 valve openings
5 base plates
5a projection tube portion
6 steam vents
7 terminal cap
8 valve bodies
9 hush panel
10 liners
11 lead-in wires
Embodiment
Utilize the accompanying drawing specific embodiments of the invention to describe below.
Fig. 1 is the longitudinal sectional view of the battery of embodiment of the present invention.Among Fig. 1; Battery container 1 is the metal cylinder of an end opening; Its opening portion seals through metal hush panel 9 via liner 10, and above-mentioned liner 10 can and keep airtight with the top electric insulation of this battery container 1, in addition; Go into technology etc. by ditch peristome, liner 10 and the hush panel 9 of battery container 1 processed and fixed sealing oralia 9, simultaneously to after state the pole plate group and also fix.In the above-mentioned battery container 1 pole plate group 3 and electrolyte are housed, this pole plate group 3 is that positive plate and negative plate clamping barrier film ground are wound as gyrate parts relatively and with this clamp position.Battery container 1 in this execution mode is cylindric, but also can form square other shapes that waits.
Describe in the face of hush panel 9 down.
In the hush panel 9, that base plate 5 and the metal terminal of cap shape cover is 7 electric, mechanically be connected, and is formed with a plurality of and steam vent 6 external communications in the circumferential edges of terminal cap 7.Form valve chamber 12 between this base plate 5 and the terminal cap 7, 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 that kind as shown in Figure 4 directly has an independent valve opening at central part, but central part to a side opposite with valve body, be that the inside battery lateral process has the projection tube 5a of portion.Specifically, outwards draw circle with certain size from the center of base plate 5 along radial direction, form this projection tube 5a of portion from this circumferential inside battery lateral process, this projection cylindrical portion 5a has formed round-ended cylinder shape.Preferably make projection tube portion and base plate integrally formed, can reduce the unsteadiness that bring battery the connecting portion office, and on making, realize easily.Sidewall at the projection tube 5a of portion offers four valve openings 4, lays respectively at sidewall with the projection tube 5a of portion on the position of the circumferencial direction quartering.In addition, the wall thickness of also preferred projection tube portion is more than or equal to this base plate 5, when the valve opening percent opening is big, makes the thicker intensity that can enhancing protrusions tube portion of the wall thickness of projection tube portion, prevents to receive gas shock and distortion etc.
In addition; Total aperture area of said four valve openings 4 percent opening long-pending with respect to the projection tube 5a of portion sidewall surfaces is 40%～80%; Certainly adopt other mode perforates; For example offer 2 holes or offer groove, a plurality of apertures etc., but be preferably the hole of offering more than 3, satisfy above-mentioned percent opening and get final product.In addition, under the bigger situation of the aperture opening ratio of projection tube portion, preferably make its wall thickness thicker, help increasing the intensity of projection tube portion itself.
Above-mentioned elastic valve body 8 generally is flexible metal spring system valve or the rubber valve that utilizes metal spring or rubber, and the root with the above-mentioned projection tube 5a of portion fits tightly (as shown in Figure 2) under normal conditions, thereby the valve opening 4 of above-mentioned base plate 5 is sealed.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 the battery is emitted to the outside via the steam vent on the 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, the shape when valve body 8 returns to normality fits tightly with above-mentioned root once more, and valve opening 4 is closed.
One end of lead-in wire 11 is connected with the pole plate group; The other end is welded on the bottom outside of the projection tube 5a of portion of base plate 5; When an end of lead-in wire 11 was connected with negative plate, what its other end connected was exactly negative terminal plate, and when an end of lead-in wire 11 is connected with positive plate; What its other end connected is exactly positive terminal plate, realizes being electrically connected of pole plate group and terminal by this way.
With respect to lead-in wire 11 spot welding position, valve opening 4 be positioned at residing the vertical face in this position on, 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 valve opening because of influenced by air pressure etc.In addition; Because the projection tube 5a of portion forms to inside battery highlightedly, the distance between the bottom of the projection tube 5a of portion and the pole plate group end is short, so goes between 11 when being welded to the bottom of the projection tube 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 respective length among Fig. 4; For example, this wire length among Fig. 4 is 13～14mm, and this wire length among Fig. 1 of the present invention is 10～11mm.Through realizing that with short lead-in wire above-mentioned pole plate group is electrically connected with terminal board, can also reduce lead-in wire random attaching in the remaining space of battery and be incorporated into battery container or seal the valve opening equally likely possibility.
In addition, unimpeded in order to guarantee valve opening, the lead-in wire among Fig. 4 must be put the position that is welded in beyond the valve opening; That is to say the position of departing from the base plate central part; Therefore, the sidewall of battery container is approached in the bending place of lead-in wire, be given a shock, during impact etc.; Lead-in wire is easy to contact with the sidewall of battery container 1 because of himself is flexible, causes internal short-circuit of battery.
With respect to this; Lead-in wire in this execution mode 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; Therefore length is shorter than the lead-in wire among Fig. 4, almost can avoid going between contacting with battery container 1 sidewall and making the danger of internal short-circuit of battery.
In addition, owing to need enough spaces and hold the projection tube 5a of portion, therefore, and under the situation that guarantees the outside batteries size constancy, gauge that can attenuate valve body 8.Simultaneously, attenuate during the gauge of valve body 8, the remaining space of inside battery has further increased, this has also played certain function to improving battery capacity.
Utilize Fig. 3 that the set-up mode of the valve opening 4 on the projection tube 5a of portion is described below.
Fig. 3 is the vertical view of the projection tube 5a of portion of this execution mode.Fig. 3 (a) is the vertical view of the projection tube 5a of portion among Fig. 1, and Fig. 3 (b) is the variation of the projection tube 5a of portion.
Among Fig. 3 (a), valve opening 4 amounts to 4, on the quartering position on the sidewall of the projection tube 5a of portion, connects ground respectively and forms.Also can shown in Fig. 3 (b), on the trisection posistion on the sidewall of the projection tube 5a of portion, connect ground and form 3 valve openings 4 altogether.
The percent opening of above-mentioned each embodiment satisfies 40%～80% and gets final product, and being preferably formed is more than 3, and equidistantly is arranged on the circumference of valve opening respectively, thereby guarantees that the interior gas ability of battery is smooth and easy and in time be rejected to the outside.
Below, the installation method of battery is described.
One end of lead-in wire 11 of the present invention welds with positive plate earlier; Having welded go between 11 positive plate and negative plate clips barrier film and is wound into pole plate group 3 through the coiling operation; Through inserting the shell operation this pole plate group 3 is inserted in the battery container 1 again; Go into operation through ditch, the annulus that on housing 1, forms a circle indent injects electrolyte then to play the effect of fixing this pole plate group 3 in battery container 1.Then, above-mentioned battery semi-finished product are fixed in the special fixture, with the bottom outside of lead-in wire 11 the other end and the projection tube 5a of portion of base plate 5, be that the spot welding of inside battery side is connected.
On the other hand; With being assembled into the hush panel 9 that forms together by terminal cap 7, valve body 8 and base plate 5 in advance; Via processing the peristome that is sealed in battery container 1, realize of the assembling of whole hush panel 9 thus to battery container 1 as the liner 10 of airtight member and through ca(u)lk.Lead-in wire 11 after above-mentioned such assembling; Become generally'S '-shaped in inside battery remaining space inner bending; The respective length that its length goes between in Fig. 4 is short, has reduced and has stopped up the possibility of valve port 4, and can not contact with the sidewall of battery container 1; Guaranteed that the valve opening on the 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 break away from purport of the present invention, can be carried out various distortion.
Claims (7)
1. a battery is with hush panel (9); Seal via the opening portion of liner (10) battery container (1); 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), it is characterized in that
On the said base plate (5), be formed with projection tube portion (5a) towards the direction projection opposite with said valve body (8), the bottom of said projection tube portion (5a) is used for being connected with contact conductor, and said valve opening (4) is formed on the sidewall of this projection tube portion (5a).
2. battery as claimed in claim 1 is characterized in that with hush panel (9) aperture area of said valve opening (4) is 40%～80% with respect to the percent opening of all areas of sidewall of said projection tube portion (5a).
3. battery as claimed in claim 1 is characterized in that with hush panel (9) said projection tube portion (5a) is integrally formed with said base plate (5), and this projection tube portion (5a) has formed round-ended cylinder shape.
4. battery as claimed in claim 1 is characterized in that with hush panel (9) wall thickness of said projection tube portion (5a) is more than or equal to said base plate (5).
5. battery as claimed in claim 1 is characterized in that with hush panel (9) said projection tube portion (5a) is formed on the central part of said base plate (5).
6. it is characterized in that with hush panel (9) that like each described battery in the claim 1 to 5 said valve opening (4) is formed with more than 3, be arranged in equally spacedly respectively on the circumference of said projection tube portion (5a).
7. a battery is characterized in that having: the battery container (1) that has opening portion; Be inserted into the pole plate group (3) that comprises positive plate and negative plate in the said housing (1); Lead-in wire (11) is used to make pole plate group (3) to be electrically connected with electrode terminal; And said housing (1) sealed and serve as in the claim 1 to 6 of above-mentioned electrode terminal each described battery with hush panel (9).
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 true CN102340019A (en) | 2012-02-01 |
| CN102340019B CN102340019B (en) | 2014-10-22 |
Family
ID=45515610
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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106133945A (en) * | 2014-07-15 | 2016-11-16 | 三洋电机株式会社 | Electrical storage device |
| CN107851746A (en) * | 2015-07-15 | 2018-03-27 | 株式会社Lg化学 | Cap assemblies for secondary cell |
| CN109860448A (en) * | 2019-01-03 | 2019-06-07 | 王生义 | A kind of cap assemblies and battery for battery |
Citations (4)
| 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 |
| 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 (4)
| 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 |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106133945A (en) * | 2014-07-15 | 2016-11-16 | 三洋电机株式会社 | Electrical storage device |
| CN107851746A (en) * | 2015-07-15 | 2018-03-27 | 株式会社Lg化学 | Cap assemblies for secondary cell |
| US10615381B2 (en) | 2015-07-15 | 2020-04-07 | Lg Chem, Ltd. | Cap assembly for secondary battery |
| CN109860448A (en) * | 2019-01-03 | 2019-06-07 | 王生义 | A kind of cap assemblies and battery for battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102340019B (en) | 2014-10-22 |
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