CN106486633A - A kind of sleeve formula power battery diaphragm set and electrokinetic cell - Google Patents
A kind of sleeve formula power battery diaphragm set and electrokinetic cell Download PDFInfo
- Publication number
- CN106486633A CN106486633A CN201611150313.0A CN201611150313A CN106486633A CN 106486633 A CN106486633 A CN 106486633A CN 201611150313 A CN201611150313 A CN 201611150313A CN 106486633 A CN106486633 A CN 106486633A
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- China
- Prior art keywords
- case
- diaphragm
- cell
- plate
- shell
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Classifications
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/463—Separators, membranes or diaphragms characterised by their shape
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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
- H01M10/04—Construction or manufacture in general
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a kind of sleeve formula power battery diaphragm set, including individual diaphragm, the relative both sides of the diaphragm form overlap edge, and the overlap edge forms the diaphragm case of the sleeve formula of only one of which pressing seam after pressing, and the size of the diaphragm case is matched with pole plate.The invention also discloses a kind of electrokinetic cell for applying above-mentioned power battery diaphragm set, including shell, lid, positive plate, negative plate and cell septum case, shell one end open, lid is covered on the opening of shell, positive plate, negative plate and cell septum case are respectively positioned on inside the shell, diaphragm case is sheathed on the outside of positive plate or negative plate, and another negative plate or positive plate are located at the outside of cell septum case accordingly.It is an advantage of the invention that as diaphragm case is the sleeve formula of both ends open, therefore using it in electrokinetic cell, the circulation that improve inside battery electrolyte is unobstructed, enhances the performance of battery, improves the service life of battery.
Description
Technical field
The present invention relates to cell art, more particularly to a kind of power battery diaphragm set and electrokinetic cell.
Background technology
Electrokinetic cell dividing plate refers to a kind of dividing plate that is made with diaphragm material between anode and negative pole, is battery
In very crucial part, the security and cost to battery have a direct impact, and its Main Function is isolation positive and negative electrode and makes electricity
Ion in solution liquid is passed freely through between both positive and negative polarity.
At present, have a kind of battery separator of pocket type on market, the battery separator of this pocket type be by a diaphragm doubling
Afterwards, two adjacent with flanging sides form the pocket type dividing plate that pressing seam obtains only one end open after pressing, will during use
Pole plate is put in pocket type dividing plate from one end of opening.
Prevent pole plate to be short-circuited although positive/negative plate can effectively be isolated by this dividing plate, due to pocket type dividing plate only
There is one end open, there is electrolyte circulation and freely do not cause the concentration of electrolyte of inside battery uneven, easily cause battery morning
The problem of phase failure, shortens the service life of battery.
Content of the invention
Goal of the invention：For the problems referred to above, it is an object of the invention to provide a kind of sleeve formula power battery diaphragm set, effectively
The electrolyte for solving the problems, such as electrokinetic cell follow not smooth, it is a further object to provide one kind applies this barrier film
The electrokinetic cell of set.
The above-mentioned technical purpose of the present invention is achieved through the following technical solutions：A kind of sleeve formula power battery diaphragm
Set, including individual diaphragm, the relative both sides of the diaphragm form overlap edge, and the overlap edge forms only one after pressing
The diaphragm case of the sleeve formula of individual pressing seam, the size of the diaphragm case are matched with pole plate.
By adopting technique scheme, the pole plate of battery is put in diaphragm case, the pole plate with diaphragm case and barrier film
The pole plate of the opposite polarity outside set and electrolyte constitute electrokinetic cell, battery during use, as diaphragm case is two
End opening, the pole plate in diaphragm case is unobstructed up and down, therefore the electrolyte in diaphragm case can with diaphragm case outside electrolyte
Convection circulation is formed, makes the concentration of electrolyte of inside battery that uniform state is remained at, the working environment of pole plate keeps not
Become, the performance of battery is enhanced, improves the service life of battery；And the diaphragm case only one of which pressing seam that makes, permissible
The spoilage of the cell septum case caused due to the failure of pressing seam is greatly reduced, and as the quantity of pressing seam is reduced
The space that diaphragm case occupies in battery is less, and pole plate assembling is more flexible, the reduction simultaneously as diaphragm case takes up room,
So that battery increased electrolysis liquid space, accumulator capacity is conducive to increase.
Further, the pressing seam is positioned at the middle of diaphragm case plane or the side positioned at diaphragm case or position
Between the middle of diaphragm case plane and side.
By technique scheme is adopted, the electricity that seam is arranged on the sleeve formula of sheet will be pressed according to the difference of user's request
Any position of pond septum plane.
Further, the material of the diaphragm is ultra-high molecular weight polyethylene.
By adopting technique scheme, it is good, acidproof that ultra-high molecular weight polyethylene has odorless, nontoxic, chemical stability
The preferable and feature insoluble in organic solvent etc. of alkalescence, the diaphragm that is therefore made with ultra-high molecular weight polyethylene have performance
The good, feature of durable, the power battery diaphragm set that is made with this diaphragm can strengthen the performance of battery, improve battery
Service life.
A kind of electrokinetic cell of the above-mentioned sleeve formula power battery diaphragm set of application, including shell, lid, positive plate, bears
Pole plate and cell septum case, the shell one end open, the lid are covered on the opening of the shell, the positive plate,
Negative plate and cell septum case are respectively positioned on inside the shell, and the cell septum case is sheathed on the outer of the positive plate or negative plate
Side, located at the outside of cell septum case, electrolyte is full of the sky in enclosure for another negative plate or positive plate accordingly
Between and cell septum case and positive plate and negative plate between space.
By adopting technique scheme, between the internal voids of the shell of electrokinetic cell and cell septum case and pole plate
Space is filled with electrolyte, and the cell septum case used due to electrokinetic cell is the sleeve formula of both ends open, therefore battery diaphragm
Electrolyte circulation outside electrolyte and cell septum case in set is unobstructed, and the electric current of battery and the conduction of temperature are more unimpeded, electricity
The performance enhancement in pond, service life are also extended.
Beneficial effect：Compared with prior art, it is an advantage of the invention that as diaphragm case is the sleeve formula of both ends open,
Therefore use it for the mobility of diaphragm case electrolyte inside in electrokinetic cell, is improve, become the circulation of the electrolyte of inside battery
Unobstructed, make the working environment uniformity of pole plate, enhance the performance of battery, improve the service life of battery；Reduce
The quantity of pressing seam, reduces the spoilage of the battery caused due to the failure of pressing seam, and the number due to pressing seam
It is less that amount reduces the space that diaphragm case occupies in battery, pole plate assembling more flexibly, simultaneously as diaphragm case take empty
Between reduce so that battery increased the storage area of electrolyte, be conducive to accumulator capacity increase；Sleeve using both ends open
The good and long service life of electrokinetic cell performance that the diaphragm case of cartridge type is made.
Description of the drawings
Fig. 1 is the front view that pressing is sewn on the cell septum case in the middle of plane in the present embodiment；
Fig. 2 is the rearview of Fig. 1；
Fig. 3 is the top view of Fig. 1；
Fig. 4 is to embody the cell septum case of Fig. 1 and the structural representation of negative plate position relationship；
Fig. 5 is the front view of the cell septum case that pressing is sewn on a side in the present embodiment；
Fig. 6 is the rearview of Fig. 5；
Fig. 7 is the top view of Fig. 5；
Fig. 8 is to embody the cell septum case of Fig. 5 and the structural representation of positive plate position relationship；
Fig. 9 is the front view that pressing is sewn on the cell septum case in the middle of plane and between side in the present embodiment；
Figure 10 is the rearview of Fig. 9；
Figure 11 is the top view of Fig. 9；
Figure 12 is to embody the cell septum case of Fig. 9 and the structural representation of positive plate position relationship；
Figure 13 is the electrokinetic cell external structure schematic diagram of the cell septum case for applying the present embodiment；
Figure 14 is the signal of position relationship between positive plate, negative plate and diaphragm case in the electrokinetic cell for embody Figure 13
Figure；
In figure, 113, monolithic membrane piece；1st, pressing seam；2nd, rib；3rd, upper opening；4th, lower openings；5th, left side flanging；
6th, right side flanging；7th, shell；8th, lid；9th, cell septum case；10th, positive plate；11st, negative plate.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is further elucidated with, it should be understood that these embodiments are merely to illustrate
The present invention rather than restriction the scope of the present invention, after the present invention has been read, those skilled in the art are to each of the present invention
The modification for planting the equivalent form of value all falls within the application claims limited range.
A kind of sleeve formula power battery diaphragm set, as shown in figs. 1-12, including monolithic membrane piece 113, the material of diaphragm
For ultra-high molecular weight polyethylene, what the side of diaphragm was spaced along its length is provided with rib 2, diaphragm with rib 2
Relative both sides are carried out overlap joint and form overlap edge by side outwardly, overlap edge forms both ends open after pressing and only one of which pressure
The diaphragm case of the sleeve formula of the sheet of joint close 1, pressing seam 1 need to have following several forms according to client：
When pressing stitches 1 in the middle of cell septum case plane, as Figure 1-4, cell septum case pressing seam 1 or so
Two sides are respectively left side flanging 5 and right side flanging 6, and 1 vertical two ends of pressing seam are respectively upper opening 3 and lower openings
4, the matching of the size of cell septum case and negative plate；When pressing seam 1 is on a side of cell septum case, such as Fig. 5-
Shown in 8, pressing seam 1 is located at the right edge of cell septum case, and pressing 1 another relative side of seam is left side flanging 5, and pressure
The vertical two ends of joint close 1 are respectively upper opening 3 and lower openings 4, the matching of the size of cell septum case and negative plate；When
When pressing seam 1 is between the middle of cell septum case plane and side, as shown in figs9-12, cell septum case pressing seam 1 is left
Right two sides are respectively left side flanging 5 and right side flanging 6, and 1 vertical two ends of pressing seam are respectively upper opening 3 and bottom is opened
Mouthfuls 4, the matching of the size of cell septum case and negative plate.
Due to the active material on power battery cathode plate loosely, held by colliding with very for sharp or hard object
Easy to fall off, therefore in order to protect the integrality of negative plate, side of the diaphragm case with rib need to be towards positive plate, without rib
Side is towards negative plate, in case the rib on diaphragm case causes coming off for active material on pole plate to colliding with for negative plate.
Two pressing seams 1 are reduced to a pressing seam 1 in the present embodiment to be greatly reduced due to the failure of pressing seam 1
And the spoilage of the cell septum case for causing, the quality of cell septum case is improve, extends the service life of cell septum case；
And the cell septum case manufacture process of only one of which pressing seam 1 is simple, low cost, is suitable for industrialized production.Due to this enforcement
In example, the rib 2 of cell septum case is located at the outside of cell septum case, when manufacturing battery hence with the cell septum case, negative pole
, in cell septum case, positive plate is outside cell septum case for sleeve-board.
A kind of application the present embodiment sleeve formula cell septum case electrokinetic cell, as illustrated in figs. 13-14, including shell 7,
Lid 8, cell septum case 9, positive plate 10 and negative plate 11, shell 7 are the cuboid of one end open and inner hollow, lid 8
Top carries two binding posts, and lid 8 is covered on the opening of shell 7, and positive plate 10 and negative plate 11 are alternately put outside
In shell 7, cell septum case 9 is set on negative plate 11, and positive plate 10 is also filled inside shell 7 located at the outside of cell septum case 9
There is electrolyte, electrolyte is full of between the space inside shell 7 and cell septum case 9 and positive plate 10 and negative plate 11
Space.
Space between the inner space of power battery case 7 and cell septum case 9 and negative plate 11 and positive plate 10 is filled
Expire electrolyte, as the cell septum case 9 equipped with negative plate 11 is both ends open, the therefore electrolysis in cell septum case 9
The electrolyte of the enough and cell septum case of liquid energy outer 9 forms good convection circulation, remains the concentration of electrolyte in battery
Unanimously, it is ensured that pole plate working environment is constant, the stability of battery performance is enhanced, improves the service life of battery.
Due to 9 only one of which of the cell septum case pressing seam 1 that electrokinetic cell in the present embodiment is used, this cell septum case
9 make the service life of cell septum case 9 more permanent due to reducing the quantity of pressing seam 1, and the number due to pressing seam 1
It is less that amount reduces the space that cell septum case 9 occupies in battery, pole plate assembling more flexibly, simultaneously as battery every
Membrane cover 9 takes up room reduction so that battery increased the storage area of electrolyte, is conducive to accumulator capacity to increase, therefore
It is difficult because of internal short-circuit of battery using the electrokinetic cell of this cell septum case 9 and causes to damage, the performance of battery is good, using the longevity
Life is longer.
Claims (4)
1. a kind of sleeve formula power battery diaphragm set, it is characterised in that：Including individual diaphragm, the relative both sides of the diaphragm
Overlap edge is formed, the overlap edge forms the diaphragm case of the sleeve formula of only one of which pressing seam after pressing, the diaphragm case
Size is matched with pole plate.
2. a kind of sleeve formula power battery diaphragm set according to claim 1, it is characterised in that：Described pressing seam be located at every
The middle of Membrane cover plane or the side positioned at diaphragm case or between the middle of diaphragm case plane and side.
3. a kind of sleeve formula power battery diaphragm set according to claim 1, it is characterised in that：The material of the diaphragm
For ultra-high molecular weight polyethylene.
4. the electrokinetic cell that a kind of arbitrary described sleeve formula power battery diaphragm of application claim 1-3 covers, it is characterised in that：
Including shell, lid, positive plate, negative plate and cell septum case, the shell one end open, the lid are covered described outer
On the opening of shell, the positive plate, negative plate and cell septum case are respectively positioned on inside the shell, and the cell septum case is sheathed on described
Positive plate or the outside of negative plate, another negative plate or positive plate are located at the outside of cell septum case, electrolysis accordingly
Liquid is full of the space between the space of enclosure and cell septum case and positive plate and negative plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611150313.0A CN106486633A (en) | 2016-12-14 | 2016-12-14 | A kind of sleeve formula power battery diaphragm set and electrokinetic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611150313.0A CN106486633A (en) | 2016-12-14 | 2016-12-14 | A kind of sleeve formula power battery diaphragm set and electrokinetic cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106486633A true CN106486633A (en) | 2017-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611150313.0A Pending CN106486633A (en) | 2016-12-14 | 2016-12-14 | A kind of sleeve formula power battery diaphragm set and electrokinetic cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106486633A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003092100A (en) * | 2001-09-19 | 2003-03-28 | Nec Corp | Laminated cell |
| CN102742060A (en) * | 2010-02-10 | 2012-10-17 | Nec能源元器件株式会社 | Stacked secondary battery |
| CN203300727U (en) * | 2013-04-08 | 2013-11-20 | 深圳普益电池科技有限公司 | Combined part of cathode piece and diaphragm of high-energy power battery |
| CN206293521U (en) * | 2016-12-14 | 2017-06-30 | 镇江泰舸电池隔膜科技有限公司 | A kind of sleeve formula power battery diaphragm set and electrokinetic cell |
-
2016
- 2016-12-14 CN CN201611150313.0A patent/CN106486633A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003092100A (en) * | 2001-09-19 | 2003-03-28 | Nec Corp | Laminated cell |
| CN102742060A (en) * | 2010-02-10 | 2012-10-17 | Nec能源元器件株式会社 | Stacked secondary battery |
| CN203300727U (en) * | 2013-04-08 | 2013-11-20 | 深圳普益电池科技有限公司 | Combined part of cathode piece and diaphragm of high-energy power battery |
| CN206293521U (en) * | 2016-12-14 | 2017-06-30 | 镇江泰舸电池隔膜科技有限公司 | A kind of sleeve formula power battery diaphragm set and electrokinetic cell |
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