CN201868522U - Lithium ion power battery - Google Patents
Lithium ion power battery Download PDFInfo
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- CN201868522U CN201868522U CN2010205692735U CN201020569273U CN201868522U CN 201868522 U CN201868522 U CN 201868522U CN 2010205692735 U CN2010205692735 U CN 2010205692735U CN 201020569273 U CN201020569273 U CN 201020569273U CN 201868522 U CN201868522 U CN 201868522U
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- cover plate
- conducting terminal
- ion
- lithium
- power cell
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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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Abstract
The utility model belongs to the field of batteries and particularly discloses a lithium ion power battery. The lithium ion power battery comprises a metal shell, a cover plate, an electrolyte, a cell and an electronic protection element, wherein the electrolyte and the cell are contained between the metal shell and the cover plate; the cell is formed through the winding or overlapping of a positive plate, a diaphragm and a negative plate; the cover plate is provided with positive and negative conductive terminals which are insulated from the cover plate and are electrically connected with the positive plate and the negative plate; the electronic protection element is arranged between the negative conductive terminal and the cover plate, or between the negative conductive terminal and the metal shell; and the electronic protection element is a resistance element, a large-current fusing device or a Positive Temperature Coefficient (PTC) device. The lithium ion power battery cannot cause corrosion on the battery shell after long-term use or in the storage process, so that the safety property of the battery is enhanced, the service life is prolonged, and the problem of electrolyte pollution caused by corrosion is avoided.
Description
Technical field
The utility model belongs to the battery technology field, relates in particular to a kind of lithium-ion-power cell.
Background technology
At present, along with the exhaustion day by day of petroleum resources, energy crisis more and more is subjected to people's attention.New-energy automobile replaces traditional fuel vehicle, has become irreversible trend.Electric automobile is a viable option comparatively in the present new-energy automobile.And electric automobile generally relies on lithium-ion-power cell that energy is provided.
At present, common lithium-ion-power cell structure as shown in Figure 1.It comprises housing 4`, is equipped with electrolyte among the housing 4` and is immersed in electric core 3` in the electrolyte.Electricity core 3` is made up of positive pole, barrier film and negative pole.Positive pole is drawn by anodal conducting terminal 1`, and negative pole is drawn by negative pole conducting terminal 2`, is provided with insulating part 5` between housing 4` and both positive and negative polarity conducting terminal 1`, the 2`, and all insulating with both positive and negative polarity conducting terminal 1`, 2` contacts.Housing 4` as the separate component existence of insulation, does not participate in the electrochemical reaction of battery just as container.
In the prior art, consider the requirement of cost and housing, generally all adopt the housing of metal material.All kinds of materials in the electrolyte (for example lithium salts, additive, organic solvent etc.) all might produce corrosion to battery container.Long-term corrosion can reduce the performance of battery container, thereby shortens the useful life of battery.And corrode often very serious in certain part, thereby make the battery container part very fragile, cause electrolyte to leak easily or cause other more serious accidents, use to cell safety and cause great hidden danger.
The utility model content
Technical problem to be solved in the utility model is: security of lithium-ion-power cell of the prior art can be poor.Thereby provide a kind of security performance high lithium-ion-power cell.
A kind of lithium-ion-power cell, it comprises: metal shell, cover plate, electrolyte and electric core; Described electrolyte and electric core are contained between metal shell and the cover plate; Described electric core is reeled by positive plate, barrier film and negative plate or is laminated;
Described cover plate is provided with the anodal conducting terminal with the cover plate insulation, and described anodal conducting terminal is electrically connected with positive plate; Described cover plate is provided with the negative pole conducting terminal with the cover plate insulation, and described negative pole conducting terminal is electrically connected with negative plate;
Also comprise the Electronic Protection element, described Electronic Protection element is arranged between negative pole conducting terminal and the cover plate or between negative pole conducting terminal and the metal shell.
Lithium-ion-power cell provided by the utility model, it is using for a long time and is depositing in the process, and battery container can not be subjected to the corrosion of electrolyte, thus the battery reduction of having avoided causing in useful life because of corrosion, the problem that security performance reduces.On the other hand, also avoid the electrolyte contamination that causes because of corrosion and the problem of loss.
Description of drawings
Fig. 1 be in the prior art battery plus-negative plate and housing concern schematic diagram.
Fig. 2 is a lithium-ion-power cell schematic diagram provided by the utility model.
Fig. 3 is a lithium-ion-power cell partial enlarged drawing provided by the utility model.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
A kind of lithium-ion-power cell, it comprises: metal shell, cover plate, electrolyte and electric core; Described electrolyte and electric core are contained between metal shell and the cover plate; Described electric core is reeled by positive plate, barrier film and negative plate or is laminated; Described cover plate is provided with the anodal conducting terminal with the cover plate insulation, and described anodal conducting terminal is electrically connected with positive plate; Described cover plate is provided with the negative pole conducting terminal with the cover plate insulation, and described negative pole conducting terminal is electrically connected with negative plate; Also comprise the Electronic Protection element, described Electronic Protection element is arranged between negative pole conducting terminal and the cover plate or between negative pole conducting terminal and the metal shell.
Wherein, metal shell can be aluminum hull, box hat, nickel shell or its alloy shell.The utility model does not have specific (special) requirements to the shape of metal shell, and metal shell can be a square casing, can be cylindrical housings yet.
The material of the utility model cover plate can be identical with metal shell, also can be inequality.
The shape of cover plate and metal shell is complementary, and forms hermetically-sealed construction, and electrolyte and electric core are contained in wherein.This is known in those skilled in the art.
In the utility model, if metal shell one end opening then only needs a cover plate and metal shell opening coupling to form hermetically-sealed construction.If the metal shell both ends open then needs two cover plates and metal shell opening coupling to form hermetically-sealed construction.
Lithium-ion-power cell of the present utility model preferably includes two cover plates.
Wherein, electric core is reeled by positive plate, barrier film and negative plate or is laminated.
Positive plate generally comprises plus plate current-collecting body and the positive electrode that is coated on the plus plate current-collecting body; Wherein the material of plus plate current-collecting body and positive electrode are known in those skilled in the art, do not give unnecessary details at this.
Negative plate generally also comprises negative current collector and the negative material that is coated on the negative current collector; Equally, the material of negative current collector and negative material also are known in those skilled in the art, do not give unnecessary details at this.
Being reeled or the stacked method that forms electric core by positive plate, barrier film and negative plate, also is known in those skilled in the art, does not give unnecessary details at this.
Positive plate and negative plate generally need lug that electric current is derived, and lug can be an other soldering polar ear on positive plate or negative plate, can also be integrally formed with positive plate or negative plate.
The integrally formed method of lug and positive plate or negative plate is specially: the two ends on the Width of the collector of both positive and negative polarity are equipped with does not cover the material district.The material that do not cover of plus plate current-collecting body is distinguished an end barrier film that extends electric core, and the collector of negative plate extends the other end barrier film of electric core; The extended part of plus plate current-collecting body, pressing and electrical connection form anode ear, the part that negative current collector extends out, pressing and electrical connection form negative electrode lug.
Lug is drawn electric current by the conducting terminal that is electrically connected with it.
The mode of soldering polar ear in addition, its both positive and negative polarity lug can be positioned at an end or the two ends of electric core.The cover plate of corresponding lithium ion battery can be one or two.The conducting terminal of both positive and negative polarity can be arranged on on the end casing, also can be separately positioned on the cover plate at two ends.
But both positive and negative polarity lug and both positive and negative polarity pole piece are integrally formed, and its both positive and negative polarity lug lays respectively at the two ends of electric core.Corresponding lithium ion battery comprises two cover plates, lays respectively at the two ends of metal shell; On the anodal conducting terminal setting cover plate at one end, the negative pole conducting terminal is arranged on the cover plate of the other end.
Generally speaking, the both positive and negative polarity lug directly is electrically connected the both positive and negative polarity conducting terminal.The utility model is preferred, and the both positive and negative polarity lug is electrically connected to the both positive and negative polarity conducting terminal by the sheet that is flexible coupling.
Wherein, the sheet that is flexible coupling is formed by the multiple layer metal foil layer is folded.The positive pole that is connected with the positive pole ear sheet that is flexible coupling is preferably laminated aluminium foil and is laminated, and the negative pole that is connected with the negative lug sheet that is flexible coupling is preferably multilayer copper foil and is laminated.In addition, the sheet that is flexible coupling can annealed PROCESS FOR TREATMENT, to strengthen its toughness.
The sheet that is flexible coupling is provided with bending, and the bending part of the sheet that is flexible coupling is provided with the bending prerotation vane.The sheet that is flexible coupling is connected the outside of lug, and the described outside refers to that with described conducting terminal be the center, away from a side of described conducting terminal.With the conducting terminal is the center, and the sheet that is flexible coupling is connected the outside of lug, and the other end is walked around conducting terminal and is connected the same side of conducting terminal with all the other be flexible coupling sheet and bending prerotation vanes.So connect, lug is positioned in the middle of the bending part, also can play the effect that struts the sheet bending part angle that is flexible coupling, and prevents its bending part angle too small and fractures.
The bending prerotation vane comprises an annulus and rectangular, and described annulus rectangularly is connected or directly is one with described; Described annulus is located at the bending part of the described sheet that is flexible coupling, the stacked side that is connected conducting terminal of the described rectangular and described sheet that is flexible coupling, the described rectangular outermost layer that is connected the sheet that is flexible coupling.The annulus of described bending prerotation vane and rectangular can being made into integration also can be that both welding are made.
Because the soft pole piece that connects welds together with lug, so lug also has a bigger bending angle, makes lug flexible scope in electric core become greatly, is not easy to be broken in vibration processes.
The other end of conducting terminal passes cover plate and extends to outside the battery.
Under the preferable case, on the cover board be provided with the hole of passing for anodal conducting terminal, between anodal conducting terminal and hole, insulating sealer be set; Can be that anodal conducting terminal contacts with the cover plate insulation like this.
In like manner, on the cover board be provided with the hole of passing for the negative pole conducting terminal, between negative pole conducting terminal and hole, insulating sealer be set.
Under the preferable case, the cover plate guard member can also be set on the cover board.
The optional usefulness of cover plate guard member has insulation characterisitic, electrolyte resistance and fire-retardant material and makes; for example plastics, rubber, resin; wherein plastics can adopt but be not limited to PFA, PES, MODIFIED PP; rubber can be selected for use but be not limited to ethylene propylene diene rubber; resin can be selected for use but be not limited to epoxy resin, phenol aldehyde modified epoxy resin etc., and its cover plate guard member is preferably rubber cover plate guard member.
The cover plate guard member is provided with the hole that can allow conducting terminal draw, and the geomery and the conducting terminal in described hole are complementary.
The cover plate guard member can be integrative-structure or divide body structure, and the shape of cover plate guard member and cover plate and conducting terminal hermetically-sealed construction are complementary.
Divide body structure to separate from the hole on the cover plate guard member.Help drawing of conducting terminal like this.
Existing conducting terminal is a bending structure, and certain rigidity is arranged, and adopts the branch body structure that the hole on the cover plate guard member is divided into two, and the bending part of walking around conducting terminal like this directly is fastened on conducting terminal in the hole on the cover plate guard member from both sides.Significantly reduce the difficulty of drawing the hole of conducting terminal on the cover plate guard member.
The split structure optimization is the mutual buckle type structure.This mutual buckle type shape can be fit structure arbitrarily such as triangle, trapezoidal, square, rectangle or " U " shape.The mutual buckle type structure helps the engaging of branch body structure, makes connection more firm.
Also be provided with the steam vent of pressure release when being beneficial to safety valve and opening on the cover plate guard member, avoid the impact failure of external force in order to protect safety valve, this steam vent is preferably the intersection fence structure.
Side edge thereof is provided with boss, because lithium-ion-power cell also need coat one deck insulation gummed paper outward; Under the situation that does not have the cover plate guard member, the insulation gummed paper to coat side edge thereof boss the side and above, four jiaos of boss easily puncture the insulation gummed paper, thereby have increased the potential safety hazard of battery.The utility model cover plate guard member edge has ledge structure, can coat cover plate fully.So the insulation gummed paper need only coat the side of boss, thereby avoids the dead angle of boss to puncture the insulation gummed paper, eliminates cell safety hidden danger.
Under the preferable case, a groove through electrical contact surfaces is set on the conducting terminal, the described groove safety effect that ruptured after being subjected to mechanical external force.
The method preparation that groove can adopt mechanical field to know is arbitrarily perhaps made with methods such as punching presses; The degree of depth of groove is the 10%-95% of conducting terminal thickness; The wide of groove is the 50%-500% of conducting terminal width; Groove on the conducting terminal is one or more of.
The thickness of conducting terminal can be decided according to the kind and the preparation needs of battery, and according to specific embodiments of the present utility model, the thickness of conducting terminal is 0.2-20mm, preferred 2.5mm.
Conducting terminal can adopt various electric conducting material well known in the art to make, as fine copper or fine aluminium; Can determine according to battery size; When the conducting terminal material is fine copper, the degree of depth of groove is equivalent to the 50%-90% of conducting terminal thickness at this moment, the width of groove is the 100%-500% of depth of groove, when the conducting terminal material is fine aluminium, the degree of depth of groove is equivalent to the 30%-80% of conducting terminal thickness, and recess width is the 100%-300% of depth of groove.
Be filled with soft in the groove and the filler of conductive capability and certain bond strength is arranged, this filler can be tin, conductive plastic, conductive rubber etc.
Lithium-ion-power cell of the present utility model comprises the Electronic Protection element, and the Electronic Protection element is arranged between negative pole conducting terminal and the cover plate or between negative pole conducting terminal and the metal shell.
The setting of the utility model preferred electron protection component on the cover board, the one end is electrically connected with cover plate, an other end is electrically connected with the negative pole conducting terminal.
More preferably an end of Electronic Protection element welds on the cover board, and an other end is welded on the negative pole conducting terminal.
Under the preferable case, the surface of Electronic Protection element of the present utility model is provided with insulating part.Insulating part can be surface-coated coatings, dielectric ink at the Electronic Protection element etc., can also be at Electronic Protection element surface coated insulation material.When the cover plate guard member was injection moulding formation, the insulating part of Electronic Protection element surface can be served as by the cover plate guard member, and both unite two into one.
Under the preferable case, Electronic Protection element of the present utility model is a kind of among resistive element, current fusing device or the PTC.
Resistive element is a device known in those skilled in the art.It is 1～1000K Ω that the utility model preferably adopts the resistance value of resistive element, more preferably 1～10K Ω.
The current fusing device also is a device known in those skilled in the art, and the internal structure of current fusing device is not given unnecessary details at this.
The preferred fuse of current fusing device of the present utility model, more preferably the blowout current of fuse is greater than 100A.
PTC also is a device known in those skilled in the art.The concrete structure of PTC is not done at this and to be given unnecessary details.
Zero power resistance 1～the 100mohm of the preferred PTC device that adopts of the utility model, maximum conducting electric current 10～100A.
Inventor of the present utility model obtains through long-term experiment and analysis: cause battery metal housing reason for corrosion to be, in long-term charge and discharge process and use and to deposit in the process, electrolytic salt in the electrolyte, organic solvent and additive etc., can with the metallic atom reaction in the metal shell, and be converted into metal ion and enter in the electrolyte and go.Thereby caused the corrosion of battery metal housing, made the decreased performance of metal shell, and then influenced the security performance and the useful life of battery.On the other hand, the metal ion that enters electrolyte can pollute electrolyte, influences the performance of electrolyte, can cause other harm by electrokinetic cell.
And the utility model links to each other by the Electronic Protection element battery metal housing or cover plate with negative pole, and negative pole has been assembled a large amount of electronics, and electronics is transferred on cover plate or the metal shell by the Electronic Protection element.Because cover plate and metal shell formation hermetically-sealed construction, promptly be electrically connected between cover plate and the metal shell, transfer to the electronics on the cover plate, also promptly transfer on the metal shell.Under the effect of electronics, atom is difficult for being converted into metal ion in the metal shell, thereby has guaranteed not corroded of metal shell, and metal shell is functional.Thereby also avoided metal ion to enter electrolyte, polluted the problem of electrolyte.Also have; be subjected to when battery causing anodal conducting terminal to contact after the impact energetically of external force with metal shell; because the utility model is provided with the Electronic Protection element between negative pole conducting terminal and metal shell, thereby has avoided the danger of battery short circuit, has strengthened the security performance of battery.
Below in conjunction with specific embodiment the utility model is further elaborated.
Referring to Fig. 2, a kind of lithium-ion-power cell comprises metal shell 4, cover plate 42, electric core 3 and electrolyte (not looking out among the figure).
Positive plate comprises plus plate current-collecting body and is coated in positive electrode on the plus plate current-collecting body, and the two ends of the Width of plus plate current-collecting body are equipped with does not cover the material district, and the material district of not covering of an end extends barrier film, and the part pressing of extending barrier film forms anode ear.
In like manner, negative plate comprises negative current collector and the negative material that is coated on the negative current collector, the two ends of the Width of negative current collector are equipped with does not cover the material district, and barrier film is extended in the material district of not covering of an end of anode ear relatively, and the part pressing of extending barrier film forms negative electrode lug.So just form positive and negative lug respectively at the two ends of electric core.
The electricity core 3 quilts spacer ring 32 at two ends up and down are fixed in metal shell 4 and the cover plate 42 formed cavitys.
Anode ear is connected with anodal conducting terminal 11 by the sheet 12a that is flexible coupling.Be provided with the hole of passing for anodal conducting terminal 11 on upper cover plate 42a, outside batteries is extended in the hole that anodal conducting terminal 11 passes among the upper cover plate 42a.Insulating sealer 44a is set between positive terminal 11 and the hole.
Negative electrode lug is connected with negative pole conducting terminal 21 by the sheet 12b that is flexible coupling, and is provided with the hole of passing for negative pole conducting terminal 21 on lower cover 42b, and outside batteries is extended in the hole that negative pole conducting terminal 21 passes among the lower cover 42b.Insulating sealer 44b is set between negative pole conducting terminal 21 and the hole.
One resistive element is set on lower cover 42b, and this resistive element one end is welded on the lower cover 42b, the other end by wire bonds on negative terminal 21.The surface of resistive element 9 is with insulating protective layer.This insulating protective layer is at resistive element surface-coated dielectric ink.
The resistance value of this resistive element is 1k Ω.
This lithium-ion-power cell note is made A1.
Different is with embodiment 1: a fuse is set on lower cover, and this fuse one end is welded on the lower cover, the other end by wire bonds on negative terminal.Other parts are with embodiment 1.
This lithium-ion-power cell note is made A2.
As shown in Figure 3, different is with embodiment 1: a PTC 8 is set on lower cover 42b, and these PTC 8 one ends are welded on the lower cover 42b, the other end by wire bonds on negative terminal 21.
On cover plate 42, also be provided with cover plate guard member 41; The employing of cover plate guard member has insulation characterisitic, electrolyte resistance and fire-retardant material makes, and the shape and the cover plate of cover plate guard member 41 are complementary, and are provided with the hole of drawing for conducting terminal.Described cover plate guard member is provided with the hole that can allow conducting terminal draw, and the geomery and the conducting terminal in described hole are complementary.Present embodiment is encapsulated in Electronic Protection element PTC 8 in the cover plate guard member 41.
Other parts are with embodiment 1.
This lithium-ion-power cell note is made A3.
Comparative Examples 1
A kind of lithium ion battery comprises metal shell, electric core and electrolyte.
Metal shell comprises up and down two cover plates and at the tubular shell between the cover plate up and down.Tubular shell and up and down cover plate be sealedly and fixedly connected, and form cavity in inside.
Ccontaining electric core and electrolyte in the cavity, electric core is immersed in the electrolyte.
The electricity core is reeled by positive pole, barrier film and negative pole and is formed.
Positive pole comprises plus plate current-collecting body and is coated in positive electrode on the plus plate current-collecting body, and the two ends up and down of plus plate current-collecting body are all left and do not covered the material district, and the material district of not covering of an end extends barrier film, and pressing becomes anode ear.
Negative pole comprises negative current collector and is coated in negative material on the negative current collector, and the two ends up and down of negative current collector are also all left and do not covered the material district, and extends barrier film in the material district of not covering of an end of anode ear relatively, and pressing becomes negative electrode lug.
The electricity core quilt spacer ring at two ends up and down is fixed in the metal shell.
Anode ear passes spacer ring and is connected with positive terminal by the sheet that is flexible coupling, and positive terminal passes upper cover plate and extends outside batteries.Be provided with insulating part between positive terminal and the upper cover plate.
Negative electrode lug passes lower cover and is connected with negative terminal by the sheet that is flexible coupling, and negative terminal passes lower cover and extends outside batteries.Be provided with insulating part between negative terminal and the lower cover.
This lithium-ion-power cell note is made AC1.
Performance test:
With battery A1-A3 and AC1,, observe housing corrosion situation with 1C rate charge-discharge circulation 500 times.The results are shown in Table 1.
Table 1
| Battery | Housing corrosion situation |
| A1 | There is not corrosion |
| A2 | There is not corrosion |
| A3 | There is not corrosion |
| AC1 | Weld corrosion |
As can be seen from Table 1, lithium-ion-power cell provided by the utility model can effectively be avoided the corrosion of electrolyte to metal shell, thereby has improved the useful life and the battery safety of battery.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (11)
1. lithium-ion-power cell, it comprises: metal shell, cover plate, electrolyte and electric core; Described electrolyte and electric core are contained between metal shell and the cover plate; Described electric core is reeled by positive plate, barrier film and negative plate or is laminated;
Described cover plate is provided with the anodal conducting terminal with the cover plate insulation, and described anodal conducting terminal is electrically connected with positive plate; Described cover plate is provided with the negative pole conducting terminal with the cover plate insulation, and described negative pole conducting terminal is electrically connected with negative plate;
It is characterized in that: also comprise the Electronic Protection element, described Electronic Protection element is arranged between negative pole conducting terminal and the cover plate or between negative pole conducting terminal and the metal shell.
2. lithium-ion-power cell according to claim 1 is characterized in that: be provided with the hole of passing for anodal conducting terminal on described cover plate, between anodal conducting terminal and hole insulating sealer be set;
On described cover plate, be provided with the hole of passing for the negative pole conducting terminal, between negative pole conducting terminal and hole, insulating sealer be set.
3. lithium-ion-power cell according to claim 1 is characterized in that: described lithium-ion-power cell comprises two cover plates, lays respectively at the two ends of metal shell; On the described anodal conducting terminal setting cover plate at one end, described negative pole conducting terminal is arranged on the cover plate of the other end.
4. lithium-ion-power cell according to claim 1 is characterized in that: an end of described Electronic Protection element and the welding of negative pole conducting terminal, the other end and cover plate welding.
5. lithium-ion-power cell according to claim 1 is characterized in that: the surface of described Electronic Protection element is provided with insulating part.
6. according to any described lithium-ion-power cell of claim 1-5, it is characterized in that: described Electronic Protection element is a resistive element.
7. lithium-ion-power cell according to claim 6 is characterized in that: the resistance value of described resistive element is 1～1000K Ω.
8. according to any described lithium-ion-power cell of claim 1-5, it is characterized in that: described Electronic Protection element is the current fusing device.
9. lithium-ion-power cell according to claim 8 is characterized in that: described current fusing device is a fuse, and the blowout current of described fuse is greater than 100A.
10. according to any described lithium-ion-power cell of claim 1-5, it is characterized in that: described Electronic Protection element is PTC.
11. lithium-ion-power cell according to claim 10 is characterized in that: zero power resistance 1～100mohm of described PTC, maximum conducting electric current is 10～100A.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205692735U CN201868522U (en) | 2010-10-16 | 2010-10-16 | Lithium ion power battery |
| JP2013533082A JP5661189B2 (en) | 2010-10-16 | 2011-10-13 | Lithium ion battery |
| EP11832049.8A EP2628204B1 (en) | 2010-10-16 | 2011-10-13 | Lithium-ion battery |
| KR1020137012700A KR101492354B1 (en) | 2010-10-16 | 2011-10-13 | Lithium-ion battery |
| PCT/CN2011/080764 WO2012048652A1 (en) | 2010-10-16 | 2011-10-13 | Lithium-ion battery |
| US13/273,352 US8865330B2 (en) | 2010-10-16 | 2011-10-14 | Lithium-ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205692735U CN201868522U (en) | 2010-10-16 | 2010-10-16 | Lithium ion power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201868522U true CN201868522U (en) | 2011-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205692735U Expired - Lifetime CN201868522U (en) | 2010-10-16 | 2010-10-16 | Lithium ion power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201868522U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012048652A1 (en) * | 2010-10-16 | 2012-04-19 | Byd Company Limited | Lithium-ion battery |
| CN102456910A (en) * | 2010-10-16 | 2012-05-16 | 比亚迪股份有限公司 | Lithium ion power battery |
| CN105470417B (en) * | 2014-09-02 | 2018-05-29 | 宁德时代新能源科技股份有限公司 | Power battery top cover |
-
2010
- 2010-10-16 CN CN2010205692735U patent/CN201868522U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012048652A1 (en) * | 2010-10-16 | 2012-04-19 | Byd Company Limited | Lithium-ion battery |
| CN102456910A (en) * | 2010-10-16 | 2012-05-16 | 比亚迪股份有限公司 | Lithium ion power battery |
| CN105470417B (en) * | 2014-09-02 | 2018-05-29 | 宁德时代新能源科技股份有限公司 | Power battery top cover |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20110615 Effective date of abandoning: 20160309 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |