CN201266650Y - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
- Publication number
- CN201266650Y CN201266650Y CNU2008202072697U CN200820207269U CN201266650Y CN 201266650 Y CN201266650 Y CN 201266650Y CN U2008202072697 U CNU2008202072697 U CN U2008202072697U CN 200820207269 U CN200820207269 U CN 200820207269U CN 201266650 Y CN201266650 Y CN 201266650Y
- Authority
- CN
- China
- Prior art keywords
- plate
- electrode terminal
- ion battery
- negative electrode
- lithium ion
- 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 - Lifetime
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a lithium-ion battery, which comprises a shell and an electrode component, the electrode component comprises an anode plate, a cathode plate and a diaphragm arranged between the anode plate and the cathode plate and also arranged in the shell. Both the anode plate and the cathode plate are provided with a dressing zone and an undressing zone, the undressing zones of the anode plate and the cathode plate form a positive electrode lug and a negative electrode lug, wherein, the lithium-ion battery also comprises a positive electrode terminal, a negative electrode terminal and a cover plate. The positive electrode terminal and the negative electrode terminal are respectively integrated with the cover plate into a whole, one ends of the positive electrode terminal and the negative electrode terminal pass through the cover plate into the battery and are connected with the positive electrode lug and the negative electrode lug respectively. According to the lithium-ion battery provided by the utility model, as the electrode terminals are integrated with the cover plate into a whole and connected with the electrode lugs, the utility model can simplify assembling process, reduce inner resistance of the battery, improve use efficiency of the battery and lead to safe and reliable connection.
Description
Technical field
The utility model relates to the lithium ion battery field, relates to a kind of lithium ion battery with improved electrode terminal more specifically.
Background technology
Along with the progress of science and technology, lithium ion battery more and more appears in people's the life, as mobile phone, digital camera, notebook computer, hybrid vehicle etc.In actively carrying out for the research of high performance lithium ion battery.
In the prior art, publication number is for providing a kind of rechargeable battery among the CN1905245A, and the electrode terminal of this rechargeable battery adopts the helicitic texture attaching nut that electrode terminal is fixing on the cover board.Adopt the fixed form of this structure, the internal resistance of cell is bigger, influences the service efficiency of battery, also can reduce because of the loosening reliability of battery that makes of nut simultaneously, has bigger potential safety hazard, and in addition, this connected mode has reduced the efficiency of assembling of battery.
The utility model content
The purpose of this utility model is to provide a kind of lithium ion battery at the defective that exists in the above-mentioned prior art, can reduce internal resistance, improves battery service efficiency and efficiency of assembling, and the method for attachment of electrode terminal is safer reliable.
The utility model provides a kind of lithium ion battery, this lithium ion battery comprises shell and electrode assemblie, described electrode assemblie comprises positive plate, negative plate and be arranged on positive plate, barrier film between negative plate also is arranged in the described shell, described positive plate and negative plate are equipped with dressing district and dressing district not, the not dressing district of described positive plate and negative plate forms anode ear and negative electrode lug, described lithium ion battery also comprises positive electrode terminal, negative electrode terminal and cover plate, described positive electrode terminal and negative electrode terminal are made one with described cover plate respectively, and an end of described positive electrode terminal and negative electrode terminal passes described cover plate and leads in the described battery and be connected with negative electrode lug with described anode ear respectively.
In lithium ion battery of the present utility model, because described electrode terminal and described cover plate is made one and described electrode terminal is connected on the described lug, when electrode terminal being connected on the described lug, also finished the assembling of electrode terminal like this, thereby reduced assembling procedure, reduced the internal resistance of battery, improved the service efficiency and the efficiency of assembling of battery, and battery is more safe and reliable.
Description of drawings
Fig. 1 is according to the positive plate of lithium ion battery of the present utility model and the schematic diagram of negative plate.
Fig. 2 is the schematic diagram according to the electrode assemblie of lithium ion battery of the present utility model.
Fig. 3 is the schematic diagram according to lithium ion battery of the present utility model.
Embodiment
Come below with reference to the accompanying drawings embodiment of the present utility model is elaborated.
By general knowledge as can be known, anodal part is connected according to its polarity with the negative pole part in the utility model.
With reference to the accompanying drawings, the lithium ion battery that a kind of execution mode of the present utility model provides comprises shell 5 and electrode assemblie 4, described electrode assemblie 4 comprises positive plate 1, negative plate 2 and be arranged on positive plate 1, the barrier film 3 that negative plate is 2 also is arranged in the described shell 5, described positive plate 1 and negative plate 2 are equipped with dressing district and dressing district not, the not dressing district of described positive plate 1 and negative plate 2 forms anode ear 103 and negative electrode lug 203, described lithium ion battery also comprises positive electrode terminal 7, negative electrode terminal 8 and cover plate 6, described positive electrode terminal 7 and negative electrode terminal 8 are made one with described cover plate 6 respectively, and an end of described positive electrode terminal 7 and negative electrode terminal 8 passes described cover plate 6 and leads in the described battery and be connected with negative electrode lug 203 with described anode ear 103 respectively.
Described positive plate 1 and negative plate 2 have dressing district and dressing district not, evenly be coated with active material in the dressing district, a not dressing district with certain width is reserved or scraped to an end parallel with the pole piece length direction, anode ear 103 and negative electrode lug 203 directly are not laminated in the dressing district by one deck at least, anode ear 103 and negative electrode lug 203 are provided with the logical area in bigger electric current road with place, dressing district like this, can prevent that battery is in the large current density electric process or under the situation of abuse, heat is assembled with auxiliary material district intersection in a large number at anode ear 103 and negative electrode lug 203, has improved the heavy-current discharge performance and the fail safe of battery.
Described positive electrode terminal 7 and negative electrode terminal 8 are made one with described cover plate 6 respectively, and an end of described positive electrode terminal 7 and negative electrode terminal 8 passes described cover plate 6 and leads in the described battery and be connected with negative electrode lug 203 with described anode ear 103 respectively.Positive electrode terminal 7 and negative electrode terminal 8 is reliable with cover plate 6 attachment security like this, reduce needn't internal resistance, improve the battery service efficiency, at electrode terminal and the assembling of also having finished battery when lug is connected, minimizing assembling procedure.
Described anode ear 103 and negative electrode lug 203 can oppositely be placed each other, and stretch out in outside the barrier film 3 between positive plate 1 and the negative plate 2.
In addition, described positive plate 1, negative plate 2 and the described barrier film 3 that is arranged on therebetween can successively be reeled along its length, and the skin behind the coiling is described barrier film 3.Tensioning dynamics unanimity during coiling, and the electrode assemblie pressed sizing that coiling is formed.
Described anode ear 103 and negative electrode lug 203 are through punching press and cut out the shape of the formation outside, back cross-sectional area less than the inside cross-section area, and are connected with the described positive electrode terminal 7 of corresponding polarity and an end of negative electrode terminal 8, are preferably ultra-sonic welded.Thereby, increased the current lead-through area, help heat and distribute, improve the fail safe of battery.
In addition, can be provided with insulating sealer between described positive electrode terminal 7 and negative electrode terminal 8 and the described cover plate 6, described insulating sealer makes the insulation of described electrode terminal and described cover plate, prevents that battery short circuit or electric leakage from hurting sb.'s feelings, and guarantees battery safety in use.
According to the another kind of execution mode of lithium ion battery of the present utility model, described lithium ion battery can also comprise that one deck is packaged in described electrode assemblie 4 outer field insulating barriers.Described insulating barrier is set prevents effectively that electrode assemblie from contacting with extraneous conductor by shell and be short-circuited, improve battery security.
Although carefully described the utility model with reference to its specific execution mode, but it will be understood to those of skill in the art that, under the prerequisite of the spirit and scope of the present utility model that do not deviate from the claims qualification, can make various changes in form and details.
Claims (6)
1. lithium ion battery, comprise shell (5) and be arranged on electrode assemblie (4) in the described shell (5), described electrode assemblie (4) comprises positive plate (1), negative plate (2) and be arranged on positive plate (1), barrier film (3) between negative plate (2), described positive plate (1) and negative plate (2) are equipped with dressing district and dressing district not, the not dressing district of described positive plate (1) and negative plate (2) forms anode ear (103) and negative electrode lug (203), it is characterized in that, described lithium ion battery also comprises positive electrode terminal (7), negative electrode terminal (8) and cover plate (6), described positive electrode terminal (7) and negative electrode terminal (8) are made one with described cover plate (6) respectively, and an end of described positive electrode terminal (7) and negative electrode terminal (8) passes described cover plate (6) and leads in the described battery and be connected with negative electrode lug (203) with described anode ear (103) respectively.
2. lithium ion battery according to claim 1 is characterized in that, described anode ear (103) and negative electrode lug (203) are oppositely placed each other, and stretches out in outside the barrier film (3) between positive plate (1) and the negative plate (2).
3. lithium ion battery according to claim 1 is characterized in that, described positive plate (1), negative plate (2) and the described barrier film (3) that is arranged on are therebetween successively reeled along its length, and the skin behind the coiling is described barrier film (3).
4. lithium ion battery according to claim 1 is characterized in that, described positive electrode terminal (7) and negative electrode terminal (8) respectively with described anode ear (103) and negative electrode lug (203) ultra-sonic welded.
5. lithium ion battery according to claim 1 is characterized in that, described positive electrode terminal (7) and negative electrode terminal (8) are provided with insulating sealer with cover plate (6) touching position.
6. according to any described lithium ion battery in the claim 1 to 5, it is characterized in that described lithium ion battery comprises that also one deck is packaged in the outer field insulating barrier of described electrode assemblie (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202072697U CN201266650Y (en) | 2008-08-14 | 2008-08-14 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202072697U CN201266650Y (en) | 2008-08-14 | 2008-08-14 | Lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201266650Y true CN201266650Y (en) | 2009-07-01 |
Family
ID=40833025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202072697U Expired - Lifetime CN201266650Y (en) | 2008-08-14 | 2008-08-14 | Lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201266650Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730625A (en) * | 2013-12-31 | 2014-04-16 | 张晓红 | Lithium-ion battery with high rate discharge performance |
-
2008
- 2008-08-14 CN CNU2008202072697U patent/CN201266650Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730625A (en) * | 2013-12-31 | 2014-04-16 | 张晓红 | Lithium-ion battery with high rate discharge performance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090701 |
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| CX01 | Expiry of patent term |