CN106252708A - A kind of lithium battery with stable negative pole piece - Google Patents
A kind of lithium battery with stable negative pole piece Download PDFInfo
- Publication number
- CN106252708A CN106252708A CN201610752041.5A CN201610752041A CN106252708A CN 106252708 A CN106252708 A CN 106252708A CN 201610752041 A CN201610752041 A CN 201610752041A CN 106252708 A CN106252708 A CN 106252708A
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- Prior art keywords
- cell body
- section
- negative pole
- spacing
- welded
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Primary Cells (AREA)
Abstract
The invention discloses a kind of lithium battery with stable negative pole piece, including tubular cell body, described cell body has positive terminal and negative pole end, positive terminal is placed in cell body top, negative pole end includes cylinder negative pole end and the bottom surface negative pole end being respectively placed in the cell body face of cylinder and bottom surface, lithium battery also includes negative plate and the negative plate securing member being welded in cell body negative pole end, described negative plate is made up of the section of being welded and fixed and spacing canned paragraph, its section of being welded and fixed is welded and fixed with the cylinder negative pole end of cell body, spacing canned paragraph is fixedly connected on cell body by negative plate securing member.The negative plate of described lithium battery positional stability relative with battery electrode column is high, the reliability effect that battery electrode column is connected by multidirectional macroseism with pole piece can be reduced largely, improve the stability of battery charge and discharge process under vibration environment, thus reduce the current-carrying capacity change of junction point, separate arcing equivalent risk, promote the service life of battery, practicality and high financial profit.
Description
Technical field:
The present invention relates to a kind of lithium battery with stable negative pole piece, relate to cell art.
Background technology:
In all energy forms, electric energy is to be easiest to the energy that use, clean environment firendly and efficiency are the highest, and battery is best
Storing the device of electric energy, in all battery products, lithium battery is that at present the youngest, most advanced, technology gold content is
Energy products high, that energy density is maximum, it is widely used among electric motor car.And outside cylindrical lithium battery primary structure includes
Shell, places positive/negative plate in the enclosure and barrier film, and the cover plate of sealing cover top portion, when manufacturing installation, positive pole after winding
The anode ear of plate is gathered in the top of battery, and the negative electrode lug of negative plate is gathered in the bottom of battery, in the fabrication process, need by
Negative plate welds with housing bottom surface, and during use, the shell of cylindrical lithium battery is as negative pole, and the most a lot of cylinder type lithium battery
Negative plate without effective position limiting structure just directly with housing negative pole end weld (or metal is close to connect), Yi Shouji at junction point
Sheet or the vibration effect of battery, the steadiness of connection is the highest, thus can strengthen sealing-off (disengaging) wind at battery cathode junction point
Danger.Battery is during high current charge-discharge, if the current-carrying capacity of junction point changes, can directly affect the temperature at junction point
Rise, then affect battery life；The arcing that time serious, (moment disengaging) produces, it is possible to puncture relatively thin negative metal, causes
The catastrophic effects such as leakage.
Summary of the invention:
The technical problem to be solved is: providing a kind of simple in construction, cost is the highest, all cold companies of fabrication and installation
Connect, convenient operation, and the negative plate of battery and battery cathode end can be made to have the lithium battery of higher position stability.
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of lithium battery with stable negative pole piece, including tubular cell body, described cell body have positive terminal and
Negative pole end, described positive terminal is placed in cell body top, and described negative pole end includes the post being respectively placed in the cell body face of cylinder and bottom surface
Face negative pole end and bottom surface negative pole end, negative plate and negative plate that described lithium battery also includes being welded in cell body negative pole end are tight
Firmware, described negative plate is made up of the section of being welded and fixed and spacing canned paragraph, its section of being welded and fixed and the cylinder negative pole of cell body
End is welded and fixed, and spacing canned paragraph is fixedly connected on cell body by negative plate securing member.
As preferably, on the cylinder of positive terminal, it is provided with annular groove, described annular groove cincture at described cell body
The external cylindrical surface of cell body is arranged and parallel with the cross section of cell body, and the spacing canned paragraph of described negative plate is placed in annular groove
In and be anchored in annular groove by negative plate securing member.
As preferably, described negative plate is set to integrated elongated metal sheet, its section of being welded and fixed and cell body
Cylinder negative pole end be welded and fixed, and described in the cross section of the section of being welded and fixed and cell body be vertically arranged, described spacing canned paragraph
It is set to the concave inward structure agreed with annular groove.
As preferably, described negative plate securing member is provided around the wire coil that annular groove is arranged, described metal wire
Spacing canned paragraph through the groove of spacing canned paragraph and is anchored in annular groove by circle.
As preferably, the face of cylinder of the end of the described spacing canned paragraph annularly cell body on groove top extends and is formed
First spacing section, the end of described first spacing section forms second spacing section in the upper horizontal bending of cell body, and described second
The end bending of spacing section also extends formation external conductive and connects end.
As preferably, described negative plate is set to integrated elongated metal sheet, and its section of being welded and fixed is placed in negative pole
Sheet tail end the cylinder negative pole end with cell body are welded and fixed, and described in the section of being welded and fixed is vertical with the cross section of cell body sets
Putting, described spacing canned paragraph includes the 3rd spacing section, the 4th spacing section and the 5th spacing section, described in the end of the section of being welded and fixed
Bottom surface negative pole end toward cell body extends vertically formation the 3rd spacing section, and the end of the 3rd spacing section is at negative pole end direction, bottom surface water
Flat extension forms the 4th spacing section, and the end of the 4th spacing section forms the 5th in the vertical bending in cylinder negative pole end direction of cell body
Spacing section, the five spacing sections end bendings also extend formation external conductive connection end.
As preferably, it is provided with in the periphery of described cell body and is coated on cylinder negative pole end, bottom surface negative pole end and negative plate
Outside plastic packaging thin film.
As preferably, the section of being welded and fixed of described negative plate is set to the metal plate of strip.
Compared with prior art, usefulness of the present invention is: described in there is the lithium battery of stable negative pole piece use negative
Arrange and the spacing fixing structure of battery cathode end on pole piece, thus can be effectively by firm being fixed on battery of negative plate, energy
Preferably keep the stability of negative plate and battery cathode end pad, it is to avoid owing to causing negative pole when External Force Acting is on negative plate
Sheet or separates in weld avulsion with negative pole end, enhances negative plate and the bonding strength of battery and steadiness, thus extends electricity
The service life in pond, largely on save use cost, thus there is higher economic benefit, be suitable for popularization and application.
Accompanying drawing illustrates:
The present invention is further described below in conjunction with the accompanying drawings:
Fig. 1 is the one of which embodiment of the present invention and the structural representation in front when not covering plastic packaging thin film；
Fig. 2 is another embodiment of the present invention and Facad structure schematic diagram when not covering plastic packaging thin film；
Fig. 3 is another embodiment of the present invention and Facad structure schematic diagram when not covering plastic packaging thin film；
Fig. 4 is that the plastic packaging thin film of the present invention installs partial cross structural representation when covering.
Detailed description of the invention:
Technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described embodiment is only
It is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
All other embodiments that personnel are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
A kind of lithium battery with stable negative pole piece, as it is shown in figure 1, include tubular cell body 1, described cell body
1 has positive terminal 101 and negative pole end, and described positive terminal 101 is placed in cell body 1 top, and described negative pole end includes being respectively placed in
The cylinder negative pole end 102 of cell body 1 face of cylinder and bottom surface and bottom surface negative pole end 103, in actual applications, described cylinder negative pole
End and bottom surface negative pole end are the metal shell being coated on the cell body face of cylinder and bottom surface, and described lithium battery also includes being welded in electricity
The negative plate 2 of cell body negative pole end and negative plate securing member 3, described negative plate 2 is by the section of being welded and fixed 201 and spacing canned paragraph
202 compositions, its section of being welded and fixed 201 is welded and fixed with the cylinder negative pole end 102 of cell body 1, and spacing canned paragraph 202 passes through negative pole
Sheet securing member 3 is fixedly connected on cell body 1.
As the preferred embodiment in the present embodiment, for further enhancing spacing canned paragraph and the electricity of described negative plate
The steadiness that the negative pole end of cell body connects, in concrete application, is provided with ring at described cell body 1 on the cylinder of positive terminal 101
Connected in star 4, described annular groove 4 arranges and parallel with the cross section of cell body 1 around the external cylindrical surface of cell body 1, is equivalent to
Cell body is provided with the ring-type cervical region of an indent, and the spacing canned paragraph 202 of described negative plate 2 is placed in annular groove 4,
The profile of spacing canned paragraph is set to the cell body with annular groove and matches the concave inward structure agreed with, and then can lead to more conveniently
Cross negative plate securing member 3 to be anchored in annular groove 4, outside described negative plate 2, be pasted with fixation adhesive tape, play auxiliary solid
It is set for using；It addition, described negative plate 2 is typically both configured to integrated elongated metal sheet, its section of being welded and fixed 201 and electricity
The cylinder negative pole end 102 of cell body 1 is welded and fixed, and described in the cross section of the section of being welded and fixed 201 and cell body 1 be vertically arranged, because of
And, in actual applications, connect due to the other end of spacing canned paragraph is that external conductive connects end, thus is relatively easy to be subject to
The effect of external force, when External Force Acting connects end in external conductive, can be applied to spacing canned paragraph by the conduction of power, and due to
The concave inward structure of spacing canned paragraph can be fixed with annular groove screens, thus can play at the axial direction anticathode sheet of cell body
Effective spacing fixation, and then the external force that effectively prevent cell body axial direction conducted by spacing canned paragraph further
To the section of being welded and fixed, the steadiness that be welded and fixed section and the negative pole end of cell body between be connected then is effectively ensured.
And further, as shown in Figure 4, be connected between the section of being welded and fixed and the negative pole end of cell body for further enhancing
Steadiness, in actual applications, can by be provided with in the periphery of described cell body 1 be coated on cylinder negative pole end 102, bottom surface bear
Extreme 103 and negative plate 2 outside plastic packaging thin film 11, and increasing while plastic packaging thin film, preferably, also
The section of being welded and fixed 201 of described negative plate 2 can be disposed as the metal plate of strip, thus, plastic packaging thin film can be effective
By negative plate constraint be fastened on the shell i.e. cylinder negative pole end of cell body, thus when cell body radial direction External Force Acting in
When the external conductive of negative plate connects end, plastic packaging thin film can effectively reduce this active force to welding the canned paragraph power in radial direction
Conduction, and when the section of being welded and fixed of tablet-style is fixed on the cell body negative pole end of column, it is combined with plastic packaging thin film more can
Effectively reduce the impact on welding canned paragraph of the active force in the radial direction, thus further ensure that and be welded and fixed Duan Yu electricity
The stability that the cylinder negative pole end of cell body connects.
In the present embodiment, it is connected fixing with annular groove for further enhancing the concave inward structure of described spacing canned paragraph
Steadiness, in actual applications, preferably, also for convenience of fabrication and installation and later maintenance, described negative pole
Sheet securing member 3 is provided around the wire coil that annular groove 4 is arranged, and wire coil to could be arranged to have higher machinery strong
Degree and the flexible wire of toughness, by manually passing the recessed of the concave inward structure of spacing canned paragraph 202 by described wire coil
Groove soldier is around being anchored in annular groove, thus is effectively anchored in annular groove 4 by the spacing canned paragraph 202 of negative plate.
In the present embodiment, for further enhancing the bonding strength of described negative plate and negative pole end, reduce external force butt welding
Connect the conduction of the power of canned paragraph, on the face of cylinder of the end of the described spacing canned paragraph 202 annularly cell body 1 on groove 4 top
Extending and formed first spacing section 5, the end of described first spacing section 5 forms the second limit in the upper horizontal bending of cell body 1
Position section 6, the end bending of described second spacing section 6 also extends formation external conductive and connects end 7, thus, first spacing section and
The other end of spacing canned paragraph can be effectively anchored on the cylinder on annular groove top by the bending section of second spacing section of composition, by
An opposed annular groove is defined between cylinder and the top positive terminal of cell body of the cell body in annular groove top
Protruding end, thus had identical spacing solid by spacing section of bending section formed of first spacing section and second and spacing canned paragraph
Be set for use, thus further reduce External Force Acting on negative plate time the conduction of power, further enhance and be welded and fixed
The steadiness that section is connected with battery cathode end.
And as another preferred embodiment in the present embodiment, as in figure 2 it is shown, described negative plate 2 is set to one-body molded
Elongated metal sheet, its section of being welded and fixed 201 is placed in negative plate 2 tail end and welds with the cylinder negative pole end 102 of cell body 1 solid
Fixed, and described in the cross section of the section of being welded and fixed 201 and cell body 1 be vertically arranged, the section of being welded and fixed and the post of cell body herein
The welding position of face negative pole end is located close to the position of bottom cathode end, and described spacing canned paragraph 202 is by three bendings also
Form the 3rd spacing section 8, the 4th spacing section 9 and the 5th spacing section 10, specifically, described in be welded and fixed the end of canned paragraph 201
Portion extends vertically formation the 3rd spacing section 8 toward the bottom surface negative pole end 103 of cell body 1, and the end of the 3rd spacing section 8 is at bottom surface negative pole
Hold the 103 horizontal-extending formation in direction the 4th spacing section 9, the 4th spacing section with bottom surface negative pole end abutting contact, the 4th spacing section 9
End forms the 5th spacing section 10 in the vertical bending in cylinder negative pole end 102 direction of cell body 1, the 5th spacing section of 10 end bendings
And extend formation external conductive and connect end 7, thus in actual applications, by the 3rd spacing section 8, the 4th spacing section 9 and the
Spacing section of five spacing sections 10 compositions is connected with cylinder bottom cell body and bottom, thus effectively plays and reduce radial direction
The external force impact on welding canned paragraph, and be combined in bottom cathode end and plastic packaging thin film is set, thus effectively by the 4th limit of bottom
Position section and bottom surface negative pole end firm contact against, thus further reduce the external force of the axial direction shadow to welding canned paragraph
Ring, thus also can effectively strengthen the section of being welded and fixed and the bonding strength of cell body negative pole end and steadiness.
As another preferred embodiment in the present embodiment, as it is shown on figure 3, described negative plate 2 is set to integrated L
Shape sheet metal, its section of being welded and fixed 201 outward appearance is L-shaped and is placed in negative plate 2 tail end the cylinder negative pole end 102 with cell body 1
Be welded and fixed, and described in the free end of the section of being welded and fixed 201 be vertically arranged with the axis of cell body 1, the section of being welded and fixed herein
With the position that the welding position of the cylinder negative pole end of cell body is located close to bottom cathode end, and described spacing canned paragraph 202 sets
It is set to vertical canned paragraph and is fixed on the top of cylinder negative pole end of cell body, by L-shaped sheet metal, increasing negative plate 2 bottom
Point steadiness, specifically, described in the cylinder negative pole end 102 of end and cell body 1 of the section of being welded and fixed 201 by L-shaped metal
Under the L-shaped part of sheet and the effect of plastic packaging film, the effectively external force of the minimizing radial direction impact on welding canned paragraph, enter one simultaneously
Step decreases the impact on welding canned paragraph of the external force of axial direction, thus also can effectively strengthen the section of being welded and fixed and bear with cell body
Extreme bonding strength and steadiness.
The above-mentioned lithium battery with stable negative pole piece uses and arranges and the spacing fixing knot of battery cathode end on negative plate
Structure, thus can preferably keep negative plate and battery cathode end pad effectively by firm being fixed on battery of negative plate
Stability, it is to avoid owing to External Force Acting causes negative plate or to separate in weld avulsion with negative pole end on negative plate, strengthens
The bonding strength of negative plate and battery and steadiness, thus extend the service life of battery, go up saving largely and use into
This, practicality is high.
It is emphasized that: be the most only presently preferred embodiments of the present invention, not the present invention is made any in form
Restriction, any simple modification, equivalent variations and the modification that above example is made by every technical spirit according to the present invention,
All still fall within the range of technical solution of the present invention.
Claims (8)
1. having a lithium battery for stable negative pole piece, including tubular cell body (1), described cell body (1) just has
Extremely (101) and negative pole end, described positive terminal (101) is placed in cell body (1) top, and described negative pole end includes being respectively placed in electricity
The cylinder negative pole end (102) of cell body (1) face of cylinder and bottom surface and bottom surface negative pole end (103), it is characterised in that: described lithium battery
Also including negative plate (2) and the negative plate securing member being welded in cell body negative pole end, described negative plate (2) is by the section of being welded and fixed
And spacing canned paragraph (202) composition, cylinder negative pole end (102) weldering of its section of being welded and fixed (201) and cell body (1) (201)
Connecing fixing, spacing canned paragraph (202) is fixedly connected on cell body (1) by negative plate securing member.
A kind of detachable bag lock the most according to claim 1, it is characterised in that: close at described cell body (1)
The cylinder of positive terminal (101) is provided with annular groove (4), and described annular groove (4) is arranged around the external cylindrical surface of cell body (1)
And parallel with the cross section of cell body (1), it is interior and logical that the spacing canned paragraph (202) of described negative plate (2) is placed in annular groove (4)
Cross negative plate securing member (3) to be anchored in annular groove (4).
A kind of detachable bag lock the most according to claim 2, it is characterised in that: described negative plate (2) is set to
Integrated elongated metal sheet, its section of being welded and fixed (201) is welded and fixed with the cylinder negative pole end (102) of cell body (1),
The section of being welded and fixed described in and (201) is vertically arranged with the cross section of cell body (1), described spacing canned paragraph (202) be set to
The concave inward structure that annular groove (4) agrees with.
4. a kind of detachable bag lock stated according to claim 3, it is characterised in that: described negative plate securing member is set to
The wire coil (12) arranged around annular groove (4), described wire coil (12) passes the groove of spacing canned paragraph (202) also
Spacing canned paragraph (202) is anchored in annular groove (4).
A kind of detachable bag lock the most according to claim 3, it is characterised in that: described spacing canned paragraph (202)
The face of cylinder of cell body (1) on annularly groove (4) top, end extend and formed first spacing section (5), described first limit
The end of position section (5) is formed second spacing section (6) in the upper horizontal bending of cell body (1), the end of described second spacing section (6)
Portion's bending also extends formation external conductive connection end (7).
A kind of detachable bag lock the most according to claim 1, it is characterised in that: described negative plate (2) is set to
Integrated elongated metal sheet, its section of being welded and fixed (201) is placed in negative plate (2) tail end the cylinder with cell body (1)
Negative pole end (102) is welded and fixed, and described in the cross section of the section of being welded and fixed (201) and cell body (1) be vertically arranged, described spacing
Canned paragraph (202) includes the 3rd spacing section (8), the 4th spacing section (9) and the 5th spacing section (10), described in be welded and fixed fixing
The end of section (201) extends vertically the 3rd spacing section (8) of formation toward the bottom surface negative pole end (103) of cell body (1), the 3rd spacing section
(8) end is in bottom surface negative pole end (103) direction horizontal-extending formation the 4th spacing section (9), and the end of the 4th spacing section (9) exists
The vertical bending in cylinder negative pole end (102) direction of cell body (1) forms the 5th spacing section (10), the 5th spacing section of (10) end folding
Curved and extend formation external conductive connect end (7).
A kind of detachable bag lock the most according to claim 1, it is characterised in that: outside described cell body (1)
It is provided with in week and is coated on the plastic packaging thin film (11) that cylinder negative pole end (102), bottom surface negative pole end (103) and negative plate (2) are outside.
A kind of detachable bag lock the most according to claim 1, it is characterised in that: the welding of described negative plate (2)
Canned paragraph (201) is set to the metal plate of strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610752041.5A CN106252708A (en) | 2016-08-30 | 2016-08-30 | A kind of lithium battery with stable negative pole piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610752041.5A CN106252708A (en) | 2016-08-30 | 2016-08-30 | A kind of lithium battery with stable negative pole piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106252708A true CN106252708A (en) | 2016-12-21 |
Family
ID=57597178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610752041.5A Pending CN106252708A (en) | 2016-08-30 | 2016-08-30 | A kind of lithium battery with stable negative pole piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106252708A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201853762U (en) * | 2010-07-27 | 2011-06-01 | 松下能源(无锡)有限公司 | Electrode terminal slice and battery with same |
| CN202373645U (en) * | 2011-11-24 | 2012-08-08 | 比亚迪股份有限公司 | Nickel battery |
| CN104183812A (en) * | 2014-09-17 | 2014-12-03 | 珠海汉格能源科技有限公司 | Electrode connecting device of synclastic guide-pin type cylindrical polymer lithium battery, and battery |
| CN206040848U (en) * | 2016-08-30 | 2017-03-22 | 苏州市莱赛电车技术有限公司 | Lithium cell with stabilize negative pole piece |
-
2016
- 2016-08-30 CN CN201610752041.5A patent/CN106252708A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201853762U (en) * | 2010-07-27 | 2011-06-01 | 松下能源(无锡)有限公司 | Electrode terminal slice and battery with same |
| CN202373645U (en) * | 2011-11-24 | 2012-08-08 | 比亚迪股份有限公司 | Nickel battery |
| CN104183812A (en) * | 2014-09-17 | 2014-12-03 | 珠海汉格能源科技有限公司 | Electrode connecting device of synclastic guide-pin type cylindrical polymer lithium battery, and battery |
| CN206040848U (en) * | 2016-08-30 | 2017-03-22 | 苏州市莱赛电车技术有限公司 | Lithium cell with stabilize negative pole piece |
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Application publication date: 20161221 |
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