CN102637893A - Square lithium battery - Google Patents
Square lithium battery Download PDFInfo
- Publication number
- CN102637893A CN102637893A CN2012101201935A CN201210120193A CN102637893A CN 102637893 A CN102637893 A CN 102637893A CN 2012101201935 A CN2012101201935 A CN 2012101201935A CN 201210120193 A CN201210120193 A CN 201210120193A CN 102637893 A CN102637893 A CN 102637893A
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- China
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- cover plate
- lithium battery
- electrode column
- strutting piece
- electrode
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Filling, Topping-Up Batteries (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a square lithium battery and belongs to the technical field of a lithium battery, solving the problems that the existing lithium battery is poor in safety performance and low in service life. The square lithium battery comprises a shell, an anode and cathode pole pieces, a diaphragm and electrolyte, wherein the anode and cathode pole piece, the diaphragm and the electrolyte are arranged in the shell; the pole piece is provided with a lug; the lug is connected with an electrode extraction structure; the opening of the barrel-shaped shell is provided with a cover plate used for sealing the opening; the cover plate is provided with a through hole through which the electrode extraction structure penetrates; the cover plate is provided with a liquid injection hole; the electrode extraction structure comprises a cylindrical electrode post; the inner end of the electrode post is provided with a connecting part used for enlarging the connecting area between the electrode post and the lug; one end of the electrode post, which penetrates through the cover plate, is sheathed with a locking nut; the electrode post is fixedly connected with the cover plate under the action of the locking nut; and a supporting piece which supports the electrode post is also arranged in the shell. The square lithium battery has the advantages of high safety performance, long service life and the like.
Description
Technical field
The invention belongs to technical field of lithium batteries, relate to a kind of quadrate lithium battery.
Background technology
Lithium battery is owing to have advantages such as in light weight, that volume is little, capacitance is big, charging rate is very fast, is widely used on all kinds of numbers, the communication product such as notebook computer.Yet, lithium battery is used for moving occasion or the more violent occasion of vibration, when for example being used for motor vehicle, military use etc., the wild effect of battery quality has but taken place.Through long-term use, the wild effect of lithium battery quality when finding in this type occasion, to use, quality Control during Production problem no thanks to, and relevant with the structure of lithium battery.
For example, comparatively common lithium battery is a quadrate lithium battery at present, and it mainly comprises housing and the both positive and negative polarity pole piece, barrier film and the electrolyte that are contained in the housing; Pole piece is provided with lug, housing one end opening, and cover opening by cap; Cap and housing ask through welding and form hermetically-sealed construction that said cap is provided with two electrode fairleads, is connected with anode electrode deriving structure and negative electrode deriving structure respectively; Wherein, The electrode deriving structure is: electrode lug, sealing ring, electrode punching are fastened on the cap with screw, perhaps the electrode lug are screwed on the metal electric pole, and electrode column is screwed on cap and draws.
The lithium battery of this structure is in the process of vibration, and the position between electrode column and the housing very easily changes, and causes battery to damage, and reduce useful life.And because the contact area of electrode column and electrode lug is little, and resistance is bigger, in use can produce heat, because battery container seals, heat is diffusing does not go out, and causes battery hot even blast, and poor safety performance and useful life are low.Moreover this lithium battery is not provided with explosion-protection equipment, in case the consequence of blasting is with hardly imaginable.Therefore, be badly in need of proposing the lithium battery of a kind of security performance height and long service life.
Summary of the invention
The objective of the invention is to have the problems referred to above to existing technology, proposed the quadrate lithium battery of the good and long service life of a kind of security performance.
The object of the invention can be realized through following technical proposal:
A kind of quadrate lithium battery comprises that two ends have uncovered tubular shell and both positive and negative polarity pole piece, barrier film and the electrolyte be located in the housing, and described pole piece is provided with lug; Described lug is connected with an electrode deriving structure; The open-mouth of said tubular shell is provided with and is used to seal this uncovered cover plate, has the through hole that the utmost point deriving structure that is used to supply power passes on the described cover plate, and on described cover plate, is provided with liquid injection hole; It is characterized in that; Described electrode deriving structure comprises a cylindrical electrode column, and the inner of this electrode column has the connecting portion that is connected area that is used to increase with said lug, and the end that this electrode column passes cover plate is arranged with locking nut; Described electrode column and cover plate are connected under the effect of this locking nut, in described housing, also are provided with to be used for the passive strutting piece of this electrode column.
In this square lithium battery, cover plate is connected through the mode and the housing of laser welding.Through increasing the area that is connected between electrode column and the lug; Make resistance, electric current is less through the heat of out-of-date generation, has stopped the too high problem of lithium battery temperature to a certain extent; Security performance increases substantially, and has prolonged the useful life of this square lithium battery simultaneously.In housing, also be provided with the passive strutting piece of electrode column, during as electrokinetic cell, in the process with automobile vibration, the position between electrode column and the cover plate is difficult for changing, and structure is more firm.
In above-mentioned quadrate lithium battery; Described connecting portion is bar shaped and be provided with vertical with electrode column; Described lug laterally is connected with this bar shaped connecting portion; Above-mentioned strutting piece is between connecting portion and cover plate, and a side of said strutting piece is resisted against on this connecting portion, and its opposite side is against on the cover board.
The bar shaped connecting portion that laterally is connected with lug and the contact area of lug are big, and manufacturing and easy to process, and electric current is less through the heat of out-of-date resistance, generation.
In above-mentioned quadrate lithium battery; Described strutting piece is and similar tabular of housing shape of cross section; The middle part of said strutting piece has the through hole that is complementary with above-mentioned electrode column; Above-mentioned electrode column is arranged in this through hole, on described strutting piece, also is provided with the inlet opening that is communicated with above-mentioned liquid injection hole; The edge of said strutting piece has the extension that extends internally along housing sidewall, and described extension abuts on the inwall of said housing.
This strutting piece is fixed on the inwall of housing through extension, and electrode column is had supporting role.During installation, this strutting piece cover is set on the electrode column, puts it in the housing then and get final product.
In above-mentioned quadrate lithium battery, have limiting section on the described electrode column, on described strutting piece, have the limit chamber that holds this limiting section, described electrode column and strutting piece are circumferentially fixing when described limiting section is positioned at this limit chamber.
In above-mentioned quadrate lithium battery, be provided with the plastic spacer that is sheathed on the electrode column between described connecting portion and the strutting piece, also be provided with the plastic spacer that is sheathed on the electrode column between described locking nut and the cover plate.
In above-mentioned quadrate lithium battery, described strutting piece is processed by plastic material.The strutting piece of being processed by plastic material also plays insulating effect except firm in structure.
In above-mentioned quadrate lithium battery, described electrode column is processed by copper or aluminium.When electrode column uses as positive pole, adopt aluminium to process; When electrode column uses as negative pole, adopt copper to become.
In above-mentioned quadrate lithium battery, be connected with the stainless steel nut in the described liquid injection hole, be provided with burst disk in the described stainless steel nut and prevent the seal plug that burst disk comes off, described seal plug is fixed in the described stainless steel nut through engage thread.Seal plug can disassemble from the stainless steel nut, conveniently burst disk is changed.
After from liquid injection hole, being expelled to electrolyte in the housing, need carry out shutoff to liquid injection hole.During shutoff, the stainless steel nut is screwed on the cover plate, successively burst disk, seal plug is installed in the stainless steel nut then, reach purpose the liquid injection hole shutoff.
In above-mentioned quadrate lithium battery, have ring-shaped step in the described stainless steel nut, a side of above-mentioned burst disk is resisted against on this ring-shaped step, and its opposite side and above-mentioned seal plug lean.Setting can prevent dropping of burst disk like this.
In above-mentioned quadrate lithium battery, also be provided with plastic spacer between described stainless steel nut and the cover plate.
In above-mentioned quadrate lithium battery, be provided with stainless steel gasket between described burst disk and the seal plug.
Compared with prior art, this square lithium battery has the following advantages:
Through increasing the area that is connected between electrode column and the lug; Make resistance, electric current is less through the heat of out-of-date generation, has stopped the too high problem of lithium battery temperature to a certain extent; Security performance increases substantially, and has prolonged the useful life of this square lithium battery simultaneously; In housing, also be provided with the passive strutting piece of electrode column, during as electrokinetic cell, in the process with automobile vibration, the position between electrode column and the cover plate is difficult for changing, and structure is more firm; In liquid injection hole, be provided with burst disk, its security performance is significantly improved.
Description of drawings
Fig. 1 is the structural representation of this square lithium battery.
Fig. 2 is the exploded perspective view of this square lithium battery.
Among the figure, 1, housing; 2, cover plate; 21, through hole; 22, liquid injection hole; 3, electrode column; 31, connecting portion; 32, limiting section; 4, locking nut; 5, strutting piece; 51, through hole; 52, inlet opening; 53, extension; 6, plastic spacer; 7, stainless steel nut; 8, burst disk; 9, seal plug; 10, stainless steel gasket.
Embodiment
Below be specific embodiment of the present invention and combine accompanying drawing, technical scheme of the present invention is done further to describe, but the present invention is not limited to these embodiment.
As shown in Figure 1, this square lithium battery, it comprises that mainly two ends have uncovered tubular shell 1 and both positive and negative polarity pole piece, barrier film and the electrolyte be located in this tubular shell 1.On pole piece, be provided with lug, this lug is connected with an electrode deriving structure.As depicted in figs. 1 and 2, be provided with at the open-mouth of tubular shell 1 and be used to seal this uncovered cover plate 2, have the through hole 21 that the utmost point deriving structure that is used to supply power passes on the cover plate 2, and on cover plate 2, be provided with liquid injection hole 22.
Concrete; As shown in Figure 2; This electrode deriving structure comprises a cylindrical electrode column 3; The inner of this electrode column 3 has the connecting portion that is connected area 31 that is used to increase with lug, and the end that this electrode column 3 passes cover plate 2 is arranged with locking nut 4, is fixed on the cover plate 2 at the effect bottom electrode post 3 of this locking nut 4.As shown in Figure 2, connecting portion 31 be bar shaped and with electrode column 3 vertical settings, lug laterally is connected with this bar shaped connecting portion 31.Between connecting portion 31 and cover plate 2, also be provided with and be used for this electrode column 3 passive strutting pieces 5, a side of this strutting piece 5 is resisted against on this connecting portion 31, and its opposite side is resisted against on the cover plate 2.Bar shaped connecting portion 31 is big with the contact area of lug, and manufacturing and easy to process, and electric current is less through the heat of out-of-date resistance, generation.
As shown in Figure 2; Strutting piece 5 is and similar tabular of housing 1 shape of cross section, and the middle part of strutting piece 5 has the through hole 51 that is complementary with electrode column 3, and electrode column 3 is arranged in this through hole 51; As shown in Figure 2, on this strutting piece 5, also be provided with the inlet opening 52 that is communicated with liquid injection hole 22.The edge of strutting piece 5 has the extension 53 that extends internally along housing 1 sidewall, and extension 53 abuts on the inwall of said housing 1.This strutting piece 5 is fixed on through extension 53 on the inwall of housing 1, and electrode column 3 is had supporting role.During installation, these strutting piece 5 covers are set on the electrode column 3, put it into housing 1 interior getting final product then.
In order to guarantee stability in use, as shown in Figure 2, on electrode column 3, be provided with limiting section 32, on strutting piece 5, have the limit chamber that holds this limiting section 32, electrode column 3 is circumferentially fixing with strutting piece 5 when limiting section 32 is positioned at this limit chamber.
In order to play the effect of insulation and sealing, as shown in Figure 2, between connecting portion 31 and strutting piece 5, be provided with the plastic spacer 6 that is sheathed on the electrode column 3, between locking nut 4 and cover plate 2, also be provided with the plastic spacer 6 that is sheathed on the electrode column 3.
In the present embodiment, strutting piece 5 is processed by plastic material, and the strutting piece of being processed by plastic material 5 also plays insulating effect, low cost of manufacture except firm in structure.When electrode column 3 uses as positive pole, adopt aluminium to process; When electrode column 3 uses as negative pole, adopt copper to become.
As depicted in figs. 1 and 2; In liquid injection hole 22, be connected with stainless steel nut 7; Be provided with burst disk 8 in the stainless steel nut 7 and prevent the seal plug 9 that burst disk 8 comes off; Seal plug 9 is fixed in the stainless steel nut 7 through engage thread, and seal plug 9 can disassemble from stainless steel nut 7, conveniently burst disk 8 is changed.Concrete, the seal plug 9 in the present embodiment is a nut.After from liquid injection hole 22, being expelled to electrolyte in the housing 1, need carry out shutoff to liquid injection hole 22.As shown in Figure 2, during shutoff, stainless steel nut 7 is screwed on the cover plate 2, successively burst disk 8, seal plug 9 are installed in the stainless steel nut 7 then, reach purpose with liquid injection hole 22 shutoff.
For preventing dropping of burst disk 8, in stainless steel nut 7, have ring-shaped step, a side of burst disk 8 is resisted against on this ring-shaped step, and its opposite side and seal plug 9 lean.As shown in Figure 2, between stainless steel nut 7 and cover plate 2, also be provided with plastic spacer 6; Between burst disk 8 and seal plug 9, be provided with stainless steel gasket 10.
In this square lithium battery, cover plate 2 is connected through the mode and the housing 1 of laser welding.Through increasing the area that is connected between electrode column 3 and the lug; Make resistance, electric current is less through the heat of out-of-date generation, has stopped the too high problem of lithium battery temperature to a certain extent; Security performance increases substantially, and has prolonged the useful life of this square lithium battery simultaneously.In housing 1, also be provided with electrode column 3 passive strutting pieces 5, during as electrokinetic cell, in the process with automobile vibration, the position between electrode column 3 and the cover plate 2 is difficult for changing, and structure is more firm.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as housing 1, cover plate 2, through hole 21, liquid injection hole 22, electrode column 3, connecting portion 31, limiting section 32, locking nut 4, strutting piece 5, through hole 51, inlet opening 52, extension 53, plastic spacer 6, stainless steel nut 7, burst disk 8, seal plug 9, stainless steel gasket 10 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; It all is contrary with spirit of the present invention being construed to any additional restriction to them.
Claims (10)
1. quadrate lithium battery; Comprise that two ends have uncovered tubular shell (1) and are located at both positive and negative polarity pole piece, barrier film and the electrolyte in the housing (1); Described pole piece is provided with lug, and described lug is connected with an electrode deriving structure, and the open-mouth of said tubular shell (1) is provided with and is used to seal this uncovered cover plate (2); Has the through hole (21) that the utmost point deriving structure that is used to supply power passes on the described cover plate (2); And on described cover plate (2), be provided with liquid injection hole (22), it is characterized in that, described electrode deriving structure comprises a cylindrical electrode column (3); The inner of this electrode column (3) has the connecting portion that is connected area (31) that is used to increase with said lug; The end that this electrode column (3) passes cover plate (2) is arranged with locking nut (4), and described electrode column (3) is connected with cover plate (2) under the effect of this locking nut (4), in described housing (1), also is provided with to be used for the passive strutting piece of this electrode column (3) (5).
2. a kind of quadrate lithium battery according to claim 1; It is characterized in that; Described connecting portion (31) be bar shaped and with the vertical setting of electrode column (3), described lug laterally is connected with this bar shaped connecting portion (31), above-mentioned strutting piece (5) is positioned between connecting portion (31) and the cover plate (2); And a side of said strutting piece (5) is resisted against on this connecting portion (31), and its opposite side is resisted against on the cover plate (2).
3. a kind of quadrate lithium battery according to claim 2; It is characterized in that; Described strutting piece (5) is and similar tabular of housing (1) shape of cross section; The middle part of said strutting piece (5) has the through hole (51) that is complementary with above-mentioned electrode column (3), and above-mentioned electrode column (3) is arranged in this through hole (51), on described strutting piece (5), also is provided with the inlet opening (52) that is communicated with above-mentioned liquid injection hole (22); The edge of said strutting piece (5) has the extension (53) that extends internally along housing (1) sidewall, and described extension (53) abuts on the inwall of said housing (1).
4. a kind of quadrate lithium battery according to claim 3; It is characterized in that; Has limiting section (32) on the described electrode column (3); On described strutting piece (5), have the limit chamber that holds this limiting section (32), described electrode column (3) is circumferentially fixing with strutting piece (5) when described limiting section (32) is positioned at this limit chamber.
5. according to claim 1 or 2 or 3 or 4 described a kind of quadrate lithium batteries; It is characterized in that; Be provided with the plastic spacer (6) that is sheathed on the electrode column (3) between described connecting portion (31) and the strutting piece (5), also be provided with the plastic spacer (6) that is sheathed on the electrode column (3) between described locking nut (4) and the cover plate (2).
6. according to claim 1 or 2 or 3 or 4 described a kind of quadrate lithium batteries, it is characterized in that described strutting piece (5) is processed by plastic material.
7. according to claim 1 or 2 or 3 or 4 described a kind of quadrate lithium batteries; It is characterized in that; Be connected with stainless steel nut (7) in the described liquid injection hole (22); Be provided with burst disk (8) in the described stainless steel nut (7) and prevent the seal plug (9) that burst disk (8) comes off, described seal plug (9) is fixed in the described stainless steel nut (7) through engage thread.
8. a kind of quadrate lithium battery according to claim 7 is characterized in that, has ring-shaped step in the described stainless steel nut (7), and a side of above-mentioned burst disk (8) is resisted against on this ring-shaped step, and its opposite side and above-mentioned seal plug (9) lean.
9. a kind of quadrate lithium battery according to claim 7 is characterized in that, also is provided with plastic spacer (6) between described stainless steel nut (7) and the cover plate (2).
10. a kind of quadrate lithium battery according to claim 7 is characterized in that, is provided with stainless steel gasket (10) between described burst disk (8) and the seal plug (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101201935A CN102637893A (en) | 2012-04-09 | 2012-04-09 | Square lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101201935A CN102637893A (en) | 2012-04-09 | 2012-04-09 | Square lithium battery |
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| Publication Number | Publication Date |
|---|---|
| CN102637893A true CN102637893A (en) | 2012-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101201935A Pending CN102637893A (en) | 2012-04-09 | 2012-04-09 | Square lithium battery |
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| Country | Link |
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| CN (1) | CN102637893A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633381A (en) * | 2012-08-27 | 2014-03-12 | 江苏华富储能新技术发展有限公司 | Formation system for energy storage lead-type battery |
| CN105261807A (en) * | 2014-07-14 | 2016-01-20 | 张荣华 | Power battery of electric vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200962441Y (en) * | 2006-09-06 | 2007-10-17 | 徐敖奎 | A high power lithium ion power battery |
| CN101604737A (en) * | 2008-06-13 | 2009-12-16 | 深圳市比克电池有限公司 | A kind of secondary cell |
| CN201436694U (en) * | 2009-06-24 | 2010-04-07 | 东莞新能源科技有限公司 | Power battery liquid injection and explosion proof device |
| CN202513243U (en) * | 2012-04-09 | 2012-10-31 | 温岭市恒泰电池有限公司 | Square lithium battery |
-
2012
- 2012-04-09 CN CN2012101201935A patent/CN102637893A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200962441Y (en) * | 2006-09-06 | 2007-10-17 | 徐敖奎 | A high power lithium ion power battery |
| CN101604737A (en) * | 2008-06-13 | 2009-12-16 | 深圳市比克电池有限公司 | A kind of secondary cell |
| CN201436694U (en) * | 2009-06-24 | 2010-04-07 | 东莞新能源科技有限公司 | Power battery liquid injection and explosion proof device |
| CN202513243U (en) * | 2012-04-09 | 2012-10-31 | 温岭市恒泰电池有限公司 | Square lithium battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633381A (en) * | 2012-08-27 | 2014-03-12 | 江苏华富储能新技术发展有限公司 | Formation system for energy storage lead-type battery |
| CN105261807A (en) * | 2014-07-14 | 2016-01-20 | 张荣华 | Power battery of electric vehicle |
| CN105261807B (en) * | 2014-07-14 | 2017-08-29 | 张荣华 | Electric automobile power battery |
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Application publication date: 20120815 |