CN204991847U - Lithium ion battery's mass flow body - Google Patents
Lithium ion battery's mass flow body Download PDFInfo
- Publication number
- CN204991847U CN204991847U CN201520394686.7U CN201520394686U CN204991847U CN 204991847 U CN204991847 U CN 204991847U CN 201520394686 U CN201520394686 U CN 201520394686U CN 204991847 U CN204991847 U CN 204991847U
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- CN
- China
- Prior art keywords
- main body
- active material
- lithium ion
- material layer
- ion battery
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- 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.)
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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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- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model discloses a lithium ion battery's mass flow body, including main part and active material layer, the main part be netted lamellar body, and the active material layer cladding is on the main part surface and fill and make whole of active material layer formation of both sides in the mesh of netted lamellar body. Implement the technical scheme of the utility model, the mesh divide into a plurality of small regions with active material layer to be strengthend, helps in the thickness direction reinforceing being connected of active material layer and main part, makes active material layer can more stabilize the ground cladding in the main part, avoids the condition that the appearance ftractureed, drop.
Description
Technical field
The utility model belongs to field of lithium ion battery, especially relates to a kind of collector of lithium ion battery.
Background technology
Lithium ion battery (Lithium-ionbattery) is a kind of rechargeable battery, it mainly rely on lithium ion between a positive electrode and a negative electrode movement carry out work.
Lithium ion battery refers to the general name of Lithium-ion embeding compound for positive electrode battery.The charge and discharge process of lithium ion battery is exactly embedding and the deintercalation process of lithium ion.In the embedding and deintercalation process of lithium ion, the embedding of simultaneous and lithium ion equivalent electronics and deintercalation.
The positive pole of lithium ion battery---active material is generally LiMn2O4 or cobalt acid lithium, nickel-cobalt lithium manganate material, electric bicycle then generally uses nickle cobalt lithium manganate (being commonly called as ternary) or ternary+a small amount of LiMn2O4, and pure LiMn2O4 and LiFePO4 then fade out gradually because volume is large, performance is bad or cost is high.Conductive current collector uses electrolytic aluminum foil.The negative pole of lithium ion battery---active material is generally graphite, or the carbon of approximate graphite-structure, and conductive current collector uses electrolytic copper foil.
But adopt aluminium foil to be only applicable to thinner active material layer (30 ~ 300 μm) as collector, when active material layer thickens more than 1000 μm, because collector does not play the effect of consolidating active material layer in a thickness direction, therefore active material layer is easy to the situation that appearance is ftractureed, ruptured and come off, and cannot meet the requirement of lithium ion battery process control.
Utility model content
The technical problems to be solved in the utility model is, for above-mentioned defect of the prior art, provides a kind of and can make the collector that active material layer is more firm, avoid active material layer to occur cracking, come off.
The utility model solves the technical scheme that its technical problem adopts: the collector constructing a kind of lithium ion battery, comprise main body and active material layer, main body is netted lamellar body, and active material layer is coated on body surfaces and is filled in the mesh of netted lamellar body and makes the active material layer of both sides form an entirety.
Preferably, the mesh in main body is uniformly distributed.
Preferably, mesh is polygon, shaped form or irregularly shaped.
Preferably, main body is square lamellar body.
Preferably, the madial wall of mesh is provided with the first keeper for strengthening active material layer and main body bonding strength, and the first keeper extends to mesh center and parallel with the plate face of main body or in the angle being less than 90 °.
Preferably, the peritreme of mesh is chamfering, and the degree of depth along mesh direction of chamfering is greater than 1/3 of the mesh degree of depth.
Preferably, the surface of main body is provided with the second keeper.
Preferably, the second keeper is fixed on body surfaces, and has positioning cap to main board face extension, and positioning cap outward flange is greater than the second keeper outer rim.
Preferably, the second keeper is evenly distributed on body surfaces.
Preferably, body surfaces is matsurface.
Implement the technical solution of the utility model, at least there is following beneficial effect: main body adopts network structure, network structure makes active material layer not only be attached to outside main body, and be filled in mesh, enhance the connection between active material and main body, and active material layer is divided into some zonules to be consolidated by mesh, more contribute to consolidating the connection between active material layer and main body in a thickness direction, active material layer is more firmly coated in main body, avoids the situation occurring cracking, come off.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of the main body of the collector of lithium ion battery in the utility model preferred implementation.
Fig. 2 is the cutaway view of the collector of lithium ion battery in Fig. 1 illustrated embodiment.
Fig. 3 is the partial enlarged drawing at C position in Fig. 2.
Fig. 4 is the schematic diagram of the second execution mode at C position in Fig. 3.
Fig. 5 is the schematic diagram of the third execution mode at C position in Fig. 3.
Fig. 6 is the schematic diagram of the 4th kind of execution mode at C position in Fig. 3.
Wherein, 1. main body; 11. mesh; 12. first keepers; 13. second keepers; 14. electrode ears; 131. positioning cap; 2. active material layer.
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As shown in Figures 1 to 3, the collector of the lithium ion battery in the utility model preferred implementation comprises main body 1 and active material layer 2.
This main body 1 is the mating shapes of netted lamellar body, its shape and battery, and the shape of such as battery is square, and main body 1 is also square netted lamellar body.As shown in Figure 3, be a kind of execution mode of main body 1, main body 1 is the simple meshed network configuration of band.This mesh 11 is polygon, shaped form or irregularly shaped, such as square, hexagon, star or circle etc.; The distribution mode of mesh 11 does not limit, and preferably, mesh 11 is equally distributed, be uniformly distributed the contact that makes active material layer 2 and main body 1 evenly, improve the firmness that active material layer 2 adheres to, the size of mesh 11 sets according to main body size.
The edge of main body 1 is provided with electrode ear 14, for being electrically connected with other assembly of battery.
Active material layer 2 is coated on main body 1 surface and is filled in the mesh 11 of netted lamellar body and makes the active material layer 2 of both sides form an entirety.And active material layer is divided into some zonules by this mesh 11 to be fixed, contribute to the connection strengthening active material layer 2 and main body 1 in a thickness direction, active material layer 2 can be made more firmly on the body 1 coated, avoid the situation occurring cracking, come off.
In certain embodiments, as shown in Figure 4, it is the second execution mode of main body 1, the madial wall of mesh 11 is provided with the first keeper 12 for strengthening active material layer 2 and main body 1 bonding strength, first keeper 12 extends to mesh 11 center and parallel with the plate face of main body 1 or in the angle being less than 90 °, the shape of the first keeper 12 does not limit, for not blocking the shape of mesh 11, such as, the first keeper 12 is the cylinder extended to center, hole from mesh 11 madial wall, convex thorn, cone or flange etc.First keeper 12 helps avoid active material layer 2 and departs from from mesh 11.
In certain embodiments, as shown in Figure 5, it is the third execution mode of main body 1, the peritreme of mesh 11 is chamfering, the degree of depth along mesh 11 direction of chamfering is greater than 1/3 of mesh 11 degree of depth but is less than 1/2 of mesh 11 degree of depth, such chamfer dimesion makes the shape smooth variation between the active material layer 2 in outside main body 1 and mesh 11, not easily produces stress concentration phenomenon.Peritreme in chamfering makes more to fit between active material layer 2 and main body 1, is not easily formed and fills gap.
In certain embodiments, as shown in Figure 6, be the 4th kind of execution mode of main body 1, the surface of main body 1 be evenly distributed with the second keeper 13.Second keeper 13 is fixed on main body 1 surface, and has positioning cap 131 to main body 1 plate face extension, and positioning cap 131 outward flange is greater than the second keeper 13 outer rim.Such as, the first keeper 12 is fixing reverse tapers on the body 1, and one end that reverse taper is larger is positioning cap 131, and understandably, the first keeper 12 also can be down " convex " shape, " Ψ " shape or " ρ " shape etc.Second keeper 13 contributes to the connection strengthening active material layer 2 and main body 1 in a thickness direction.
In certain embodiments, main body 1 surface is matsurface, and coarse surface makes active material layer 2 larger with the contact area of main body, connects tightr.
In sum, active material layer 2 is divided into some zonules to be consolidated by mesh 11, contribute to strengthening active material layer 2 and the connection of main body 1 in a thickness direction, make active material layer 2 more firmly be coated in main body, avoid the situation occurring cracking, come off; First keeper 12, peritreme in chamfering, the second keeper 13 and coarse surface further increase the coated soundness on the body 1 of active material layer 2.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various change, combination and change.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within right of the present utility model.
Claims (10)
1. the collector of a lithium ion battery, comprise main body (1) and active material layer (2), it is characterized in that, described main body (1) is netted lamellar body, and described active material layer (2) is coated on described main body (1) surface and is filled into and makes the described active material layer (2) of both sides form an entirety in the mesh (11) of netted lamellar body.
2. the collector of lithium ion battery according to claim 1, is characterized in that, the described mesh (11) in described main body (1) is uniformly distributed.
3. the collector of lithium ion battery according to claim 1, is characterized in that, described mesh (11) is polygon, shaped form or irregularly shaped.
4. the collector of lithium ion battery according to claim 1, is characterized in that, described main body (1) is square lamellar body.
5. the collector of lithium ion battery according to claim 1, it is characterized in that, the madial wall of described mesh (11) is provided with the first keeper (12) for strengthening active material layer (2) and main body (1) bonding strength, and described first keeper (12) extends to mesh (11) center and parallel with the plate face of main body (1) or in the angle being less than 90 °.
6. the collector of lithium ion battery according to claim 1, it is characterized in that, the peritreme of described mesh (11) is chamfering, and the degree of depth along described mesh (11) direction of described chamfering is greater than 1/3 of described mesh (11) degree of depth.
7. the collector of lithium ion battery according to claim 1, is characterized in that, the surface of described main body (1) is provided with the second keeper (13) to main body extension.
8. the collector of lithium ion battery according to claim 7, it is characterized in that, described second keeper (13) is fixed on main body (1) surface, and having positioning cap (131) to main body (1) plate face extension, described positioning cap (131) outward flange is greater than the second keeper (13) outer rim.
9. the collector of lithium ion battery according to claim 8, is characterized in that, described second keeper (13) is evenly distributed on described main body (1) surface.
10. the collector of lithium ion battery according to claim 1, is characterized in that, described main body (1) surface is matsurface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394686.7U CN204991847U (en) | 2015-06-08 | 2015-06-08 | Lithium ion battery's mass flow body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394686.7U CN204991847U (en) | 2015-06-08 | 2015-06-08 | Lithium ion battery's mass flow body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204991847U true CN204991847U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520394686.7U Expired - Fee Related CN204991847U (en) | 2015-06-08 | 2015-06-08 | Lithium ion battery's mass flow body |
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| Country | Link |
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| CN (1) | CN204991847U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107346831A (en) * | 2016-05-04 | 2017-11-14 | 上海奇谋能源技术开发有限公司 | A kind of method for improving lithium ion battery service life |
-
2015
- 2015-06-08 CN CN201520394686.7U patent/CN204991847U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107346831A (en) * | 2016-05-04 | 2017-11-14 | 上海奇谋能源技术开发有限公司 | A kind of method for improving lithium ion battery service life |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Flow collector for polymer lithium ion cell Effective date of registration: 20171221 Granted publication date: 20160120 Pledgee: China Co truction Bank Corp Dongguan branch Pledgor: DONGGUAN HONGDE BATTERY CO., LTD. Registration number: 2017440000194 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200106 Granted publication date: 20160120 Pledgee: China Co truction Bank Corp Dongguan branch Pledgor: DONGGUAN HONGDE BATTERY CO., LTD. Registration number: 2017440000194 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20200608 |