CN2798325Y - Plate type lithium battery - Google Patents
Plate type lithium battery Download PDFInfo
- Publication number
- CN2798325Y CN2798325Y CNU2005200711067U CN200520071106U CN2798325Y CN 2798325 Y CN2798325 Y CN 2798325Y CN U2005200711067 U CNU2005200711067 U CN U2005200711067U CN 200520071106 U CN200520071106 U CN 200520071106U CN 2798325 Y CN2798325 Y CN 2798325Y
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- CN
- China
- Prior art keywords
- pole piece
- barrier film
- lithium battery
- anode
- electrode pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y02E60/122—
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- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a plate type lithium battery. It contains a cuboid-shaped casing, plural positive electrode pole pieces, negative electrode pole pieces and diaphragms contained inside the shell. Electrolyte is potted inside the shell. The positive electrode pole pieces and the negative electrode pole pieces are provided with pole ears and connect with the positive electricity and the negative electricity separately through the electrode extraction structure. The utility model is characterized in that the diaphragms are baggy-structured. Each baggy diaphragm structure contains a positive electrode pole piece. The baggy diaphragm structure is provided with an opening coordinated with the pole ear of the positive electrode pole piece. The negative electrode pole pieces and the positive electrode pole pieces contained inside the baggy diaphragm structure align in interval. The utility model battery doesn't have the short-circuited condition because of vibration or temperature variation, assuring the isolation of the diaphragm and is convenient to realize mechanized operation to improve work efficiency.
Description
Technical field
The utility model relates to a kind of storage and releasing device of electric energy, is specifically related to a kind of plate shaped lithium rechargeable 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, and begins to be applied on the vehicles such as electric bicycle, electric automobile.
In the prior art, the lithium battery that this class occasion is used, be generally plate shaped lithium battery, comprise housing and be contained in the interior a plurality of anode pole pieces of housing, barrier film, cathode pole piece, and electrolyte, pole piece is provided with lug, housing one end opening, and cover opening by cap, and forming hermetically-sealed construction by welding between cap and housing, described cap is provided with two electrode fairleads, be connected with anode electrode deriving structure and negative electrode deriving structure respectively, wherein, barrier film is generally the strip film, it is cut into slightly longer than the twice of anode pole piece, by folding two surfaces that make it to be coated on anode pole piece, then between the barrier film in the two adjacent anode pole piece outsides, the anode pole piece-barrier film of Gou Chenging-cathode pole piece combination is wrapped and is positioned in the housing, thereby makes barrier film just play isolation cathode pole piece thus, the effect of negative electrode.
Yet, the fault that in the lithium battery use, takes place, part causes discovery after deliberation, the lithium battery of said structure owing to be short-circuited between inside battery anode pole piece and cathode pole piece, because vibration can make pole plate and barrier film relative position be offset, simultaneously, the in use normal variations in temperature that takes place also can cause barrier film to be out of shape because of expanding with heat and contract with cold, thereby, cause barrier film can't all coat, isolate the situation of anode plate, make between the positive and negative electrode pole plate to be short-circuited.On the other hand, the lithium battery of said structure is in preparation process, and common need the employing manually carried out folding and coating of barrier film, and also the Yi Fashengyin misoperation causes barrier film and pole plate relative position generation deviation to cause problem of short-circuit.This will have influence on the useful life of lithium battery, cause the instability of its quality, and during especially for the frequent occasion that takes place of vibration such as motor vehicle, this problem is even more serious.
Summary of the invention
The utility model purpose provides a kind of plate shaped lithium battery, makes barrier film play good buffer action to anode plate, avoids the generation of lithium battery interior short-circuit between plates situation.
For achieving the above object, the technical solution adopted in the utility model is: a kind of plate shaped lithium battery, comprise rectangular housing and be contained in the interior a plurality of anode pole pieces of housing, cathode pole piece and barrier film, be perfused with electrolyte in the housing, anode pole piece and cathode pole piece are provided with lug, and be connected with negative electricity with anode respectively by the electrode deriving structure, described barrier film is a bag shaped structure, accommodate an anode pole piece in each bag shape membrane configuration, bag shape membrane configuration is provided with the opening that cooperates with the lug of anode pole piece, cathode pole piece be contained in bag shape membrane configuration anode pole piece alternately, constitute pole piece-barrier film combination.
In the technique scheme, the technology that described " bag shape membrane configuration " combines with anode pole piece can be, shear one section from rectangular barrier film, amount to, sandwich anode pole piece, heat seal is carried out on half bar limit except that lug is sentenced respectively with left and right two sides and top, thereby makes barrier film shape pouch, anode pole piece is positioned at bag, and lug stretches out from opening part.This technology can utilize machine to realize automated production.
In the technique scheme, be provided with between described pole piece-barrier film combination and the housing and coat spacing layer.
Wherein, the spacing layer of described coating can be to be wound in the peripheral adhesive tape layer of described combination; It also can be polybag.
In the technique scheme, the outermost both sides of described pole piece-barrier film combination are cathode pole pieces.
Further technical scheme, the cathode pole piece of the outermost both sides of described pole piece-barrier film combination is the pole piece that single face applies negative material, coated side is positioned at an adjacent side with anode pole piece.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1. because the utility model battery is made bag shaped structure with barrier film, and in anode pole piece is contained in, guarantee battery in use, the situation of positive and negative intereelectrode short-circuit can not take place because of vibration, variations in temperature, guaranteed the buffer action of barrier film;
2. after adopting the pocket type encapsulating structure, be convenient to realize mechanized operation, reduce labor intensity, increase work efficiency;
3. because cathode pole piece is slightly larger than anode pole piece, adopt diaphragm bag parcel anode pole piece after, the edge size is suitable with cathode pole piece, makes alternately the time, to be easy to marshalling at positive/negative plate.
Description of drawings
Accompanying drawing 4 is that the B-B of Fig. 3 omits the amplification cross-sectional schematic.
Wherein: [1], housing; [2], electrode deriving structure; [3], lug; [4], anode pole piece; [5], cathode pole piece; [6], bag shape membrane configuration; [7], pole piece-barrier film combination.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one: referring to accompanying drawing 1 to shown in the accompanying drawing 4, a kind of plate shaped lithium battery, comprise rectangular housing 1 and a plurality of anode pole pieces 4 that are contained in the housing 1, cathode pole piece 5 and barrier film, be perfused with electrolyte in the housing, anode pole piece 4 and cathode pole piece 5 are provided with lug 3, and be connected with negative electricity with anode respectively by electrode deriving structure 2, described barrier film is a bag shaped structure, accommodate an anode pole piece 4 in each bag shape membrane configuration 6, bag shape membrane configuration 6 is provided with the opening that cooperates with the lug 3 of anode pole piece 4, cathode pole piece 5 be contained in bag shape membrane configuration 6 anode pole piece 4 alternately, constitute pole piece-barrier film combination 7, wherein, the outermost both sides are respectively cathode pole pieces 5, and the cathode pole piece 5 of outermost both sides applies the pole piece of negative material for single face, coated side is positioned at and anode pole piece 4 adjacent sides, described pole piece-barrier film combination 7 is positioned at a polybag, and polybag is arranged in housing 1, constitutes to coat spacing layer.
Claims (6)
1. plate shaped lithium battery, comprise rectangular housing [1] and be contained in the interior a plurality of anode pole pieces [4] of housing [1], cathode pole piece [5] and barrier film, housing is perfused with electrolyte in [1], anode pole piece [4] and cathode pole piece [5] are provided with lug [3], and be connected with negative electricity with anode respectively by electrode deriving structure [2], it is characterized in that: described barrier film is a bag shaped structure, accommodate an anode pole piece [4] in each bag shape membrane configuration [6], bag shape membrane configuration [6] is provided with the opening that cooperates with the lug [3] of anode pole piece [4], cathode pole piece [5] be contained in bag shape membrane configuration [6] anode pole piece [4] alternately, constitute pole piece-barrier film combination [7].
2. plate shaped lithium battery according to claim 1 is characterized in that: be provided with between described pole piece-barrier film combination [7] and the housing [1] and coat spacing layer.
3. plate shaped lithium battery according to claim 2 is characterized in that: the spacing layer of described coating is to be wound in the peripheral adhesive tape layer of described combination.
4. plate shaped lithium battery according to claim 2 is characterized in that: the spacing layer of described coating is a polybag.
5. plate shaped lithium battery according to claim 1 is characterized in that: the outermost both sides of described pole piece-barrier film combination [7] are cathode pole piece [5].
6. plate shaped lithium battery according to claim 5 is characterized in that: the cathode pole piece [5] of the outermost both sides of described pole piece-barrier film combination [7] is the pole piece of single face coating negative material, and coated side is positioned at an adjacent side with anode pole piece [4].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200711067U CN2798325Y (en) | 2005-04-20 | 2005-04-20 | Plate type lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200711067U CN2798325Y (en) | 2005-04-20 | 2005-04-20 | Plate type lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2798325Y true CN2798325Y (en) | 2006-07-19 |
Family
ID=36869572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200711067U Expired - Fee Related CN2798325Y (en) | 2005-04-20 | 2005-04-20 | Plate type lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2798325Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008052394A1 (en) * | 2006-10-30 | 2008-05-08 | Byd Company Limited | Plate assembly, core and lithium ion battery |
| CN102210053A (en) * | 2008-09-08 | 2011-10-05 | Nec能源元器件株式会社 | Layered secondary battery |
| US8092936B2 (en) | 2007-12-25 | 2012-01-10 | Byd Co. Ltd. | Electrochemical cell having a coiled core |
| US8178225B2 (en) | 2007-11-29 | 2012-05-15 | Byd Co., Ltd. | Battery and preparation method thereof |
| US8178230B2 (en) | 2007-12-18 | 2012-05-15 | Byd Co., Ltd. | Battery pack |
| US8193770B2 (en) | 2007-12-25 | 2012-06-05 | BYD Co. Ltd | Battery system for a vehicle having an over-current/over-temperature protective feature |
| US8276695B2 (en) | 2007-12-25 | 2012-10-02 | Byd Co. Ltd. | Battery electrode sheet |
| CN102956922A (en) * | 2011-08-30 | 2013-03-06 | 深圳市吉阳自动化科技有限公司 | Combining method of lithium battery pole piece and diaphragm |
| JP2013214520A (en) * | 2013-06-06 | 2013-10-17 | Nec Energy Devices Ltd | Stacked secondary battery |
| CN106159170A (en) * | 2012-06-01 | 2016-11-23 | 株式会社丰田自动织机 | Electrical storage device |
-
2005
- 2005-04-20 CN CNU2005200711067U patent/CN2798325Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8007935B2 (en) | 2006-10-30 | 2011-08-30 | Byd Co., Ltd. | Plate assembly, core and lithium ion battery |
| WO2008052394A1 (en) * | 2006-10-30 | 2008-05-08 | Byd Company Limited | Plate assembly, core and lithium ion battery |
| US8178225B2 (en) | 2007-11-29 | 2012-05-15 | Byd Co., Ltd. | Battery and preparation method thereof |
| US8178230B2 (en) | 2007-12-18 | 2012-05-15 | Byd Co., Ltd. | Battery pack |
| US8383257B2 (en) | 2007-12-25 | 2013-02-26 | Byd Co. Ltd. | Electrochemical storage cell with blow out vents |
| US8092936B2 (en) | 2007-12-25 | 2012-01-10 | Byd Co. Ltd. | Electrochemical cell having a coiled core |
| US8193770B2 (en) | 2007-12-25 | 2012-06-05 | BYD Co. Ltd | Battery system for a vehicle having an over-current/over-temperature protective feature |
| US8276695B2 (en) | 2007-12-25 | 2012-10-02 | Byd Co. Ltd. | Battery electrode sheet |
| US8865335B2 (en) | 2007-12-25 | 2014-10-21 | Byd Co. Ltd. | Electrochemical storage cell |
| CN102210053A (en) * | 2008-09-08 | 2011-10-05 | Nec能源元器件株式会社 | Layered secondary battery |
| CN102210053B (en) * | 2008-09-08 | 2014-04-23 | Nec能源元器件株式会社 | Layered secondary battery |
| CN102956922A (en) * | 2011-08-30 | 2013-03-06 | 深圳市吉阳自动化科技有限公司 | Combining method of lithium battery pole piece and diaphragm |
| CN102956922B (en) * | 2011-08-30 | 2015-03-25 | 深圳市吉阳自动化科技有限公司 | Method for combining lithium battery pole piece and diaphragm |
| CN106159170A (en) * | 2012-06-01 | 2016-11-23 | 株式会社丰田自动织机 | Electrical storage device |
| CN106159170B (en) * | 2012-06-01 | 2019-03-05 | 株式会社丰田自动织机 | Electrical storage device |
| JP2013214520A (en) * | 2013-06-06 | 2013-10-17 | Nec Energy Devices Ltd | Stacked secondary battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060719 Termination date: 20130420 |