CN202150519U - Lithium ion secondary battery without polar ears - Google Patents
Lithium ion secondary battery without polar ears Download PDFInfo
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- CN202150519U CN202150519U CN201120079126U CN201120079126U CN202150519U CN 202150519 U CN202150519 U CN 202150519U CN 201120079126 U CN201120079126 U CN 201120079126U CN 201120079126 U CN201120079126 U CN 201120079126U CN 202150519 U CN202150519 U CN 202150519U
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- face
- negative pole
- battery
- lithium ion
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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
Abstract
The utility model relates to a lithium ion secondary battery without polar ears, which comprises an electrode core formed by winding and laminating a positive pole, a partition film and a negative pole sequentially, a battery casing and a battery cover. The electrode core is filled in the battery casing, and nonaqueous electrolyte solution is filled in the battery casing and covered by the battery cover. Exposed metal current collecting base bodies are arranged on a positive end face and a negative end face of the electrode core respectively, and current is guided by a positive current collector between the positive end face and the battery cover and a negative current collector between the negative end face and the bottom of the batter casing. The lithium ion secondary battery has the advantages of being low in inner resistance, long in cycling service life, and especially suitable for high-volume lithium battery requiring large current and high power to work.
Description
Technical field
The utility model relates to a kind of lithium rechargeable battery, and being typically with the circle is the lithium ion battery of representative, and emphasis is its internal structure, particularly relates to a kind of electrodeless ear-lithium ion secondary cell.
Background technology
In recent years, along with the fast development of electric tool, electronic toy, electric bicycle, hybrid vehicle, pure electric automobile etc., increasingly high requirement has been proposed for the high power discharge ability of storage battery.The power-type lithium ion storage battery is owing to have preferably the high-power operation performance and high-energy-density and advantage such as light, thereby just promoted the use of above field step by step.
Fig. 1 is the coiling utmost point group structural representation of prior art, and is as shown in the figure.Positive plate 1 includes positive active material for aluminium foil matrix two sides, on aluminium foil, also has at least one aluminium pole ears 2 simultaneously; Negative plate 3 includes negative electrode active material for Copper Foil matrix two sides, on Copper Foil, also has at least one negative lug 4 simultaneously; Positive pole, barrier film, negative pole stack gradually placement, and anodal and negative pole is wrapped up by barrier film 5 fully, and positive pole is wrapped up by negative pole fully.
Fig. 2 is the lithium rechargeable battery structural representation of prior art, and is as shown in the figure.With coiling utmost point group volume shown in Figure 1, and around the pole piece that forms, in the battery case 6 of packing into, negative lug 4 is stretched out barrier film 5, contacts or welds with the battery case bottom, and anodal aluminium pole ears 2 stretches out barrier film 5, contacts or welds with battery cover.
Electrode cores is injected non-aqueous electrolytic solution through behind the desiccant dehumidification, through sealing, change into, operation such as partial volume, make lithium ion battery.
Hence one can see that, the stacking gradually of the electrode cores of electrodeless ear-lithium ion secondary cell by positive pole, barrier film, negative pole, and the columniform pole piece of type of being wound into wherein is provided with lug on positive plate and the negative plate, is used for drawing of electric current.But along with the increase of battery capacity, pole piece length increases fast, in order to reach the requirement of high-power operation, certainly will will increase the quantity of lug, and the lug number increases, and the manufacture difficulty of pole piece increases, and the consistency of whole pole piece descends.Because the difficulty that lithium rechargeable battery is drawn at electric current and heat causes lithium rechargeable battery to be difficult to high capacity and high powerization, has hindered the development of lithium rechargeable battery.
The utility model content
The purpose of the utility model is for overcoming a solution that above shortcoming is developed, and its purpose is to provide a kind of electrodeless cheaply ear-lithium ion secondary cell that can high-power operation.
The technical scheme of the utility model: a kind of electrodeless ear-lithium ion secondary cell; Comprise by positive pole, barrier film, negative pole and stack gradually the electrode cores of reeling and forming; Battery container and battery cover; Electrode cores is packed in the battery container, and battery container is equipped with non-aqueous electrolytic solution, and is sealed by battery cover; The anodal end face of said electrode cores and negative pole end face are equipped with the metal afflux matrix that exposes, respectively by be located at positive pole between anodal end face and the battery cover conflux body and be located at the negative pole end face and the battery container bottom between the negative pole body that confluxes carry out drainage.
In the utility model, this metal afflux matrix is positive plate, the negative plate that an end exceeds diaphragm edge 0.1-50mm in the positive plate that stacks gradually placement, barrier film, the negative plate.
In the utility model, it is 1-10mm that said positive plate, negative plate exceed diaphragm edge.
In the utility model, said positive plate metal afflux matrix and said negative plate metal afflux matrix are the metallic matrix foil of battery lead plate self, the high metal foil of conductivity that perhaps connects with welding or riveted joint mode.
In the utility model, said positive plate is aluminium, titanium or stainless steel; Said negative plate is copper, nickel or tin.
In the utility model, the metal base flow matrix of the anodal end face of electrode cores is an aluminium foil, and the metal afflux matrix of the negative pole end face of electrode cores is a Copper Foil.
In the utility model, the said negative pole body that confluxes is made up of one or more metal materials such as stainless steel, iron, nickel-clad iron, copper, nickel, nickel-clad copper, nickel plated copper.
In the utility model, the said positive pole body that confluxes is made up of stainless steel, aluminium, one or more metal materials of titanium.
In the utility model, said negative pole the conflux profile structure of body of body and said positive pole that confluxes is sheet, band shape, spring-like, plate-like, foam-like, or above combination.
In the utility model, the anodal end face at said metal afflux matrix place is the anode collection end face, and this anode collection end face welds or closely contacts with battery cover through the positive pole body that confluxes; The negative pole end face at said metal afflux matrix place is the negative pole currect collecting end face, and this negative pole currect collecting end face welds or closely contacts with the battery case bottom through the negative pole body that confluxes.
The beneficial effect that the utlity model has: the said electrodeless ear-lithium ion secondary cell of the utility model; Because anodal end face is made up of cathode metal afflux matrix; And the negative pole end face is made up of negative pole metal afflux matrix; Flat through the whirlpool then, formed the integral body that certain intensity is arranged, the afflux uniformity of whole positive plate and negative plate has obtained large increase.And between anodal end face and battery cover, also be provided with positive pole conflux body, especially positive pole conflux body and battery cover, anodal end face through welding after, anodal catchment effect has had the raising of matter especially.Between negative pole end face and battery case bottom, be provided with conflux body, especially negative pole of negative pole and conflux body and negative pole end face, battery case bottom through after welding, the catchment effect of negative pole has obtained the raising of matter equally.Anodal and negative pole currect collecting effect improves in pairs, and the catchment effect of entire cell also improves greatly.
Simultaneously, owing to need on positive plate and negative plate, lug be set, the manufacturing course of processing of whole positive plate and negative plate is simplified greatly, and difficulty reduces greatly.The uniformity and the consistency of pole piece are greatly improved, and the consistency of pole piece is improved.
Therefore, the said electrodeless ear-lithium ion secondary cell of the utility model has the advantages that internal resistance is low, have extended cycle life, and need to be specially adapted to the high capacity lithium ion battery of big electric current, high-power operation.The overall performance that has improved battery has also reduced manufacturing cost simultaneously.
Description of drawings
Fig. 1 is the coiling utmost point group structural representation of prior art;
Fig. 2 is the lithium rechargeable battery structural representation of prior art;
Fig. 3 is the coiling utmost point group structural representation of the utility model;
Fig. 4 is the electrodeless ear-lithium ion secondary battery construction sketch map of the utility model.
[figure number is to as directed]
1 positive plate, 2 positive pole ears
3 negative plates, 4 negative lug
5 barrier films, 6 battery containers
8 negative pole dressing districts, 7 anode dressing districts
9 negative pole currect collecting end faces, 10 anode collection end faces
11 battery covers, the 12 positive poles body that confluxes
The 13 negative poles body that confluxes
Embodiment
For making architectural feature of the utility model and the effect of being reached there are further understanding and understanding, cooperate detailed explanation, explain as follows in order to preferred embodiment and accompanying drawing:
Fig. 3 is the coiling utmost point group sketch map of the utility model, and is as shown in the figure.Positive plate 1, barrier film 5, negative plate 3 stack gradually placement.Positive plate 1 is divided into dressing district and non-dressing district, and the dressing district is for to include positive active material on the two sides of anodal matrix aluminium foil, and non-dressing district is anodal matrix aluminium foil.The dressing district of positive plate is wrapped in barrier film length and the width range fully before reeling, and a non-dressing district part is in barrier film parcel scope, and a part exceeds the barrier film width in addition, exposes 0.5 millimeter～20 millimeters, preferably exposes 2 millimeters～10 millimeters.It is too small to expose width, is unfavorable for that follow-up whirlpool is flat, and whole pole piece end face is difficult to form effective integral body, and intensity is also not enough, be difficult to support follow-up and positive pole conflux body welding or contact.It is excessive to expose width, and anodal end face intensity is high, but takies more height space, is unfavorable for high capacity.
Negative plate is divided into dressing district and non-dressing district, and the dressing district is for to include negative electrode active material on the two sides of negative pole matrix Copper Foil, and non-dressing district is a negative pole matrix Copper Foil.Negative pole dressing district is wrapped in the length and width range of barrier film fully before reeling, and a non-dressing district part is in barrier film parcel scope, and a part exceeds the barrier film width in addition, exposes 0.1 millimeter～50 millimeters, preferably exposes 1 millimeter～10 millimeters.It is too small to expose width, is unfavorable for that follow-up whirlpool is flat, and whole pole piece end face is difficult to form effective integral body, and intensity is also not enough, be difficult to support follow-up and negative pole conflux body welding or contact.It is excessive to expose width, and negative pole end face intensity is high, but takies more height space, is unfavorable for high capacity.
The width in negative pole dressing district 8 is greater than anode dressing district 7, requires the anode dressing district to be covered parcel by negative pole dressing district fully, will not separate out Li dendrite, battery generation safety problem otherwise have during charging on the corresponding negative plate of the positive pole zone of negative pole dressing district parcel.
Fig. 4 is the electrodeless ear-lithium ion secondary battery construction sketch map of the utility model, and is as shown in the figure, and it is to adopt coiling utmost point group shown in Figure 3, through reeling, forms columned pole piece.
The electrodeless ear-lithium ion secondary cell of the utility model preferred embodiment; Comprise by positive pole 1, barrier film 5, negative pole 3 and stack gradually the electrode cores that constitutes; Battery container 6, and battery cover 11, electrode cores are packed in the battery container 6; And in battery container 6, inject non-aqueous electrolytic solution, seal by battery cover 11 and form.The anodal end face of electrode cores and negative pole end face all have metal afflux matrix to expose, and carry out drainage by positive pole body 12 and the negative pole body that confluxes that confluxes respectively.
In the utility model preferred embodiment, the metal base flow matrix of the anodal end face of electrode cores is an aluminium foil, and the metal afflux matrix of the negative pole end face of electrode cores is a Copper Foil.
The positive terminal aluminium foil of electrode cores exposes, and the negative pole end Copper Foil of electrode cores exposes.The matrix aluminium foil of electrode cores positive plate when reeling and the matrix Copper Foil of negative plate all exceed the certain distance of barrier film end face, and (this distance range is 0.1-50mm; The preferred distance scope is 1-10mm); Be wound into the anodal aluminium foil that will exceed the barrier film end face after the electrode cores again and the negative copper foil whirlpool is flat becomes flat end face, promptly form anode collection end face and negative pole currect collecting end face.
The negative pole body 13 that confluxes is set between the bottom of negative pole end face and battery container 6; The negative pole body 13 that confluxes is made up of one or more metal materials such as stainless steel, iron, nickel-clad iron, copper, nickel, nickel-clad copper, nickel plated copper; The profile structure can be sheet, band shape, spring-like, plate-like, foam-like etc., or above combination.The conflux bottom of body 13 and battery container 6 of this negative pole can be welding, also can be tight contact.
The negative pole end face at metal afflux matrix place is a negative pole currect collecting end face 9, and this negative pole currect collecting end face 9 and the negative pole body 13 that confluxes can be welding, also can be tight contact.
The positive pole body 12 that confluxes is set between anodal end face and battery cover 11; The positive pole body 12 that confluxes is made up of one or more metal materials such as stainless steel, aluminium, titaniums; The profile structure can be sheet, band shape, spring-like, plate-like, foam-like etc., or above combination.The conflux bottom of body 12 and battery cover 11 of this positive pole can be welding, also can be tight contact.
The anodal end face at metal afflux matrix place is an anode collection end face 10, and this anode collection end face 10 and the positive pole body 12 that confluxes can be welding, also can be tight contact.
Electrode cores is injected non-aqueous electrolytic solution through behind the desiccant dehumidification, through sealing, change into, operation such as partial volume, make lithium ion battery.
The electrodeless ear-lithium ion secondary cell of the utility model; Because anodal end face is made up of cathode metal afflux matrix; And the negative pole end face is made up of negative pole metal afflux matrix; Flat through the whirlpool then, formed the integral body that certain intensity is arranged, the afflux uniformity of whole positive plate and negative plate has obtained large increase.Between anodal end face and battery cover, also be provided with positive pole conflux body, especially positive pole conflux body and battery cover, anodal end face through welding after, anodal catchment effect has had the raising of matter especially.Between negative pole end face and battery case bottom, be provided with conflux body, especially negative pole of negative pole and conflux body and negative pole end face, battery case bottom through after welding, the catchment effect of negative pole has obtained the raising of matter equally.Anodal and negative pole currect collecting effect improves in pairs, and the catchment effect of entire cell also improves greatly.
Simultaneously, owing to need on positive plate and negative plate, lug be set, the manufacturing course of processing of whole positive plate and negative plate is simplified greatly, and difficulty reduces greatly.The uniformity and the consistency of pole piece are greatly improved, and the consistency of pole piece is improved.
Therefore, the actual effect of the utility model has improved the overall performance of battery on the one hand, has reduced manufacturing cost on the one hand.
Though the utility model is as description object with electrodeless ear-lithium ion secondary cell; Obviously; The same lithium ion battery that is suitable for other shape, for example rectangular lithium ion battery equally can pass through to form anode collection end face and negative pole currect collecting end face; Positive pole body and the negative pole body that confluxes that confluxes is set, reaches the purpose that reduces internal resistance, improves the discharge power characteristic.
Though the utility model be with lithium ion battery as description object, wherein principle and the method battery that is equally applicable to other kind obviously, for example Ni-MH battery equally can adopt.
In sum; Be merely the preferred embodiment of the utility model; Be not to be used for limiting the scope that the utility model is implemented; All equalizations of doing according to the described shape of the utility model claim scope, structure, characteristic and spirit change and modify, and all should be included in the claim scope of the utility model.
Claims (8)
1. electrodeless ear-lithium ion secondary cell; Comprise by positive pole, barrier film, negative pole and stack gradually the electrode cores of reeling and forming; Battery container and battery cover, electrode cores are packed in the battery container, and battery container is equipped with non-aqueous electrolytic solution; And seal by battery cover; It is characterized in that the anodal end face of said electrode cores and negative pole end face are equipped with the metal afflux matrix that exposes, respectively by be located at positive pole between anodal end face and the battery cover conflux body and be located at the negative pole end face and the battery container bottom between the negative pole body that confluxes carry out drainage.
2. a kind of electrodeless ear-lithium ion secondary cell as claimed in claim 1 is characterized in that, this metal afflux matrix is positive plate, the negative plate that an end exceeds diaphragm edge 0.1-50mm in the positive plate that stacks gradually placement, barrier film, the negative plate.
3. a kind of electrodeless ear-lithium ion secondary cell as claimed in claim 2 is characterized in that it is 1-10mm that said positive plate, negative plate exceed diaphragm edge.
4. a kind of electrodeless ear-lithium ion secondary cell as claimed in claim 2; It is characterized in that; Said positive plate metal afflux matrix and said negative plate metal afflux matrix are the metallic matrix foil of battery lead plate self, the high metal foil of conductivity that perhaps connects with welding or riveted joint mode.
5. a kind of electrodeless ear-lithium ion secondary cell as claimed in claim 4 is characterized in that said positive plate is aluminium, titanium or stainless steel; Said negative plate is copper, nickel or tin.
6. a kind of electrodeless ear-lithium ion secondary cell as claimed in claim 1 is characterized in that the metal base flow matrix of the anodal end face of electrode cores is an aluminium foil, and the metal afflux matrix of the negative pole end face of electrode cores is a Copper Foil.
7. a kind of electrodeless ear-lithium ion secondary cell as claimed in claim 1 is characterized in that, said negative pole the conflux profile structure of body of body and said positive pole that confluxes is sheet, band shape, spring-like, plate-like, foam-like, or above combination.
8. a kind of electrodeless ear-lithium ion secondary cell as claimed in claim 1 is characterized in that, the anodal end face at said metal afflux matrix place is the anode collection end face, and this anode collection end face welds or closely contacts with battery cover through the positive pole body that confluxes; The negative pole end face at said metal afflux matrix place is the negative pole currect collecting end face, and this negative pole currect collecting end face welds or closely contacts with the battery case bottom through the negative pole body that confluxes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120079126U CN202150519U (en) | 2011-03-23 | 2011-03-23 | Lithium ion secondary battery without polar ears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120079126U CN202150519U (en) | 2011-03-23 | 2011-03-23 | Lithium ion secondary battery without polar ears |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202150519U true CN202150519U (en) | 2012-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120079126U Expired - Fee Related CN202150519U (en) | 2011-03-23 | 2011-03-23 | Lithium ion secondary battery without polar ears |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202150519U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393347A (en) * | 2014-10-27 | 2015-03-04 | 江苏津谊新能源科技有限公司 | Manufacturing method of novel lithium ion battery |
| CN108054441A (en) * | 2017-12-29 | 2018-05-18 | 泉州劲鑫电子有限公司 | A kind of high current Ni-MH battery and preparation method thereof |
| CN110034326A (en) * | 2019-04-08 | 2019-07-19 | 江苏金赛尔电池科技有限公司 | A kind of lithium battery and preparation method thereof of no tab |
| CN112186269A (en) * | 2019-07-02 | 2021-01-05 | 北京好风光储能技术有限公司 | Electric core of lithium slurry battery |
| CN112397683A (en) * | 2020-11-17 | 2021-02-23 | 辽宁九夷锂能股份有限公司 | Electrodeless lithium battery and preparation method thereof |
| CN112928281A (en) * | 2021-03-23 | 2021-06-08 | 华中科技大学 | Ear-free cylindrical battery and preparation method thereof |
| CN112993491A (en) * | 2021-02-05 | 2021-06-18 | 刘昌国 | Lithium battery, battery cell and assembly method |
-
2011
- 2011-03-23 CN CN201120079126U patent/CN202150519U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104393347A (en) * | 2014-10-27 | 2015-03-04 | 江苏津谊新能源科技有限公司 | Manufacturing method of novel lithium ion battery |
| CN108054441A (en) * | 2017-12-29 | 2018-05-18 | 泉州劲鑫电子有限公司 | A kind of high current Ni-MH battery and preparation method thereof |
| CN108054441B (en) * | 2017-12-29 | 2023-08-25 | 泉州劲鑫电子有限公司 | High-current nickel-metal hydride battery and preparation method thereof |
| CN110034326A (en) * | 2019-04-08 | 2019-07-19 | 江苏金赛尔电池科技有限公司 | A kind of lithium battery and preparation method thereof of no tab |
| CN112186269A (en) * | 2019-07-02 | 2021-01-05 | 北京好风光储能技术有限公司 | Electric core of lithium slurry battery |
| CN112186269B (en) * | 2019-07-02 | 2022-02-22 | 北京好风光储能技术有限公司 | Electric core of lithium slurry battery |
| CN112397683A (en) * | 2020-11-17 | 2021-02-23 | 辽宁九夷锂能股份有限公司 | Electrodeless lithium battery and preparation method thereof |
| CN112397683B (en) * | 2020-11-17 | 2023-10-17 | 辽宁九夷锂能股份有限公司 | Electrodeless ear lithium battery and preparation method thereof |
| CN112993491A (en) * | 2021-02-05 | 2021-06-18 | 刘昌国 | Lithium battery, battery cell and assembly method |
| CN112928281A (en) * | 2021-03-23 | 2021-06-08 | 华中科技大学 | Ear-free cylindrical battery and preparation method thereof |
| CN112928281B (en) * | 2021-03-23 | 2022-07-05 | 华中科技大学 | Ear-free cylindrical battery and preparation method thereof |
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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: 20120222 Termination date: 20130323 |