CN204118183U - The three-dimensional current collector structure of lithium primary battery negative plate - Google Patents
The three-dimensional current collector structure of lithium primary battery negative plate Download PDFInfo
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- CN204118183U CN204118183U CN201420436290.XU CN201420436290U CN204118183U CN 204118183 U CN204118183 U CN 204118183U CN 201420436290 U CN201420436290 U CN 201420436290U CN 204118183 U CN204118183 U CN 204118183U
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- cone hole
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- current collector
- dimensional current
- collector substrate
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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 relates to the three-dimensional current collector structure of a kind of lithium primary battery negative plate, comprise metal forming collector substrate, be characterized in: on collector substrate, make the three-dimensional current collector structure of one side or two-sided three-dimensional current collector structure, described collector substrate surrounding leaves smooth edge; The three-dimensional current collector structure of described one side is that collector substrate one side has concave cone hole; Described two-sided three-dimensional current collector structure is that collector substrate one side has concave cone hole, another side has convex cone hole.The utility model is by making 3D shape by collector substrate, keep collector substrate edge intact, both the short circuit that all burrs of collector cause battery had been avoided, in turn ensure that stick to collector two sides metal lithium sheet between form cross one another contact-making surface, improve collector and metal lithium sheet adhesion, avoid the disengaging of metal lithium sheet, lithium can evenly, fully be reacted, improve negative plate conductivity, save battery cost of manufacture, ensure that the security reliability of high-rate battery discharge.
Description
Technical field
The utility model belongs to lithium primary battery technical field, particularly relates to the three-dimensional current collector structure of a kind of lithium primary battery negative plate.
Background technology
Lithium primary battery, owing to having excellent performance, is widely used in the field such as stand-by power supply and military affairs of camera, wrist-watch, electronic security, memory ready power supply, notebook computer.Metal lithium sheet as negative plate material is minimum in known metal Atom amount, and electrochemical equivalent is the highest, and negative plate current potential is the most negative, mates the battery formed have superior electrical property with suitable positive electrode.Because metal lithium sheet is as the very high metal of activity, fusing point only has 180 DEG C, and the metal lithium sheet of molten state almost all vigorous reaction can occur with all material; Therefore use merely metal lithium sheet as battery cathode sheet, particularly in high-power battery reaction, in the short time, a large amount of heat release, causes localized hyperthermia, high pressure, may cause burning and blast, have a strong impact on the security performance of lithium battery.
Due to lithium battery there is heavy-current discharge time, lithium metal self is difficult to the ability ensureing constant afflux and water conservancy diversion, and conventional wire guide burrs on edges may cause the problems such as potential safety hazard, therefore usually adopt punching nickel strap, punching Copper Foil or copper pull mesh to be converted into " L " type, " 1 " type as battery cathode sheet collector, play afflux effect and derived by lug.Metal lithium sheet is pressed in collector two sides, forms lithium battery cathode plate.But because the surface of punching nickel strap or punching Copper Foil is all very smooth, mutually intersect the contact-making surface of holding with not easily being formed between metal lithium sheet.This type of collector is can adhere to loosely with during metal lithium sheet compacting, contact uneven, poorly conductive, increase negative plate interface impedance, negative plate conductivity reduces, cause negative plate cannot continue electric discharge, collector and metal lithium sheet particularly during negative plate heavy-current discharge, can be caused to disconnect and depart from.The most important thing is that the collector area due to this form only accounts for 5% ~ 20% of polar plate area, do not cover full wafer negative plate, metal lithium sheet cannot react completely, and especially has metal lithium sheet to remain at the end of heavy-current discharge, adds the potential safety hazard of battery.And the copper pull mesh adopted in early days is as collector, although two metal lithium sheet after compacting can touch through collector and be combined into one, improve the firmness that metal lithium sheet combines, but owing to drawing in the net the own edges burr that easily formation is hard after cutting, the negative plate in electric discharge later stage is along with the consumption gradually of metal lithium sheet, and the metal spine at collector edge exposes, and can cause battery short circuit,, there is larger potential safety hazard in the final security performance directly having influence on battery.
Summary of the invention
The utility model provides collector edge without spine for solving in known technology the technical problem that exists, and metal lithium sheet combines firmly, heavy-current discharge performance and the good three-dimensional current collector structure of a kind of lithium primary battery negative plate of security performance.
The utility model comprises following technical scheme:
The three-dimensional current collector structure of lithium primary battery negative plate, comprises metal forming collector substrate, is characterized in: on collector substrate, make the three-dimensional current collector structure of one side or two-sided three-dimensional current collector structure, described collector substrate surrounding leaves smooth edge; The three-dimensional current collector structure of described one side makes concave cone hole for being uniformly distributed in collector substrate one side; Described two-sided three-dimensional current collector structure makes concave cone hole for being uniformly distributed in collector substrate one side, the collector substrate between adjacent two concave cone holes is shaped with convex cone hole; Described convex cone hole and described concave cone hole are distributed on the two sides of collector substrate.
The utility model can also adopt following technical measures:
Described metal forming is nickel foil or Copper Foil.
The distribution mode in described concave cone hole is matrix type, and the degree of depth in concave cone hole is 0.05mm ~ 0.5mm, and the shape that the concave cone hole wall on concave cone hole is overlooked is square, rectangle, triangle, trapezoidal, circular one.
Described convex cone hole is matrix distribution mode, and the shape that the convex cone hole wall on convex cone hole is overlooked is square, rectangle, triangle, trapezoidal, circular one.
The advantage that the utility model has and good effect:
The utility model passes through metal forming as collector substrate, on collector substrate, 3-dimensional metal paper tinsel is suppressed after collector substrate surrounding reserves edge, maintain collector substrate edge intact, both the short circuit that all burrs of metal forming cause final battery had been avoided, in turn ensure that stick to collector substrate two sides metal lithium sheet between form cross one another contact-making surface, significantly improve the adhesion of collector and metal lithium sheet, avoid the disengaging of metal lithium sheet, make lithium can be even, sufficient reaction, improve the conductivity of negative plate, save battery cost of manufacture, ensure that the safe and reliable of lithium primary battery heavy-current discharge.
Accompanying drawing explanation
Fig. 1 is the schematic top plan view of the three-dimensional current collector structure of one side in the utility model;
Fig. 2 is A-A generalized section in Fig. 1;
Fig. 3 is the schematic top plan view of two-sided three-dimensional current collector structure in the utility model;
Fig. 4 is B-B generalized section in Fig. 3;
Fig. 5 is sectional perspective picture schematic diagram in Fig. 3.
In figure: 1-collector substrate, 2-concave cone hole wall, 3-concave cone hole, 4-convex cone hole wall, 5-convex cone hole.
Embodiment
For summary of the invention of the present utility model, Characteristic can be disclosed further, be described in detail as follows especially exemplified by following instance:
The three-dimensional current collector structure of lithium primary battery negative plate, comprises metal forming collector substrate.
Innovative point of the present utility model comprises:
Collector substrate is made the three-dimensional current collector structure of one side or two-sided three-dimensional current collector structure, and described collector substrate surrounding leaves smooth edge; The three-dimensional current collector structure of described one side makes concave cone hole for being uniformly distributed in collector substrate one side; Described two-sided three-dimensional current collector structure makes concave cone hole for being uniformly distributed in collector substrate one side, the collector substrate between adjacent two concave cone holes is shaped with convex cone hole; Described convex cone hole and described concave cone hole are distributed on the two sides of collector substrate.
Innovative point of the present utility model also comprises:
Described metal forming is nickel foil or Copper Foil.
The distribution mode in described concave cone hole is matrix type, and the degree of depth in concave cone hole is 0.05mm ~ 0.5mm, and the shape that the concave cone hole wall on concave cone hole is overlooked is square, rectangle, triangle, trapezoidal, circular one.
Described convex cone hole is matrix distribution mode, and the shape that the convex cone hole wall on convex cone hole is overlooked is square, rectangle, triangle, trapezoidal, circular one.
Embodiment 1: make the three-dimensional collector of nickel foil one side
The nickel foil selecting 0.02mm thick is as collector substrate 1, between two metallic roll collector substrate 1 being placed in three-dimensional wite roll pressing machine, two metallic roll diameters are 300mm, and three-dimensional wite roll pressing machine assembled in advance has upper male mould and lower cavity die, and exiting surface is respectively stayed in the both sides of upper and lower mould.Three-dimensional wite roll pressing machine pressure is set to 1 ~ 5kgf/cm
2, pressure roller rotating speed is at 1 turn/min; Start three-dimensional wite roll pressing machine, evenly sent in twin rollers by collector substrate 1, one side is uniformly distributed makes concave cone hole 3, and, in matrix distribution mode, there is the collector substrate 1 in connection two concave cone hole 3 in concave cone hole 3 between two concave cone holes 3; The shape that concave cone hole wall 2 on concave cone hole is overlooked is square, and be light face between collector substrate edge to concave cone hole wall, the surrounding of collector substrate 1 is smooth edge, completes the manufacturing process of the three-dimensional collector of one side as Figure 1-Figure 2.
Embodiment 2: make the three-dimensional collector of Copper Foil one side
Nickel foil in embodiment 1 is replaced to the Copper Foil of thickness 0.02mm, all the other processes are identical with embodiment 1, complete the manufacturing process of the three-dimensional collector of one side as Figure 1-Figure 2.
Embodiment 3: make the two-sided three-dimensional collector of nickel foil
The nickel foil that step 1 selects 0.02mm thick is as collector substrate 1, between two metallic roll collector substrate 1 being placed in three-dimensional wite roll pressing machine, two metallic roll diameters are 300mm, three-dimensional wite roll pressing machine assembled in advance has upper male mould and lower cavity die, and exiting surface is respectively stayed in the both sides of upper and lower mould.Three-dimensional wite roll pressing machine pressure is set to 1 ~ 5kgf/cm
2, pressure roller rotating speed is at 1 turn/min; Start three-dimensional wite roll pressing machine, collector substrate 1 is evenly sent in twin rollers, one side is uniformly distributed makes concave cone hole 3, concave cone hole 3 is in matrix distribution mode, and collector substrate 1 above can be made a concave cone hole 3 again between adjacent concave cone hole 3 minimum aperture distance and have the collector substrate 1 in connection two concave cone hole 3 between two concave cone holes 3; The shape that concave cone hole wall 2 on concave cone hole is overlooked is square, and be light face between collector substrate 1 edge to concave cone hole wall 2, collector substrate 1 surrounding is smooth edge, completes the manufacturing process of the three-dimensional collector of one side as Figure 1-Figure 2.
Step 2 makes two-sided three-dimensional collector
This three-dimensional wite roll pressing machine is placed in equally after the three-dimensional collector upset of one side step 1 completed, the parameter constant of the original setting of step 1, collector substrate 1 between the three-dimensional collector two concave cone hole 3 of one side is made with collector substrate 1 as the plane of symmetry carries out roll-in, the taper hole forming specular with concave cone hole 3 is distributed on the two sides of collector substrate 1 as convex cone hole 5 and concave cone hole 3, and convex cone hole 5 is in matrix distribution mode; The shape that convex cone hole wall 4 on convex cone hole is overlooked is square, and be light face between collector substrate 1 edge to convex cone hole wall 4, the surrounding of collector substrate 1 is smooth edge, completes the manufacturing process of two-sided three-dimensional collector as shown in Figure 3-Figure 5;
The preparation principle of the utility model material:
Be smooth edge by the surrounding of collector substrate, avoid collector edge occur spine and cause the battery short circuit made, and it is with holes recessed due to collector substrate being provided with, convex form constitutes three-dimensional collector, maximum cross one another contact-making surface is formed between the metal lithium sheet making to stick to collector substrate two sides, and there is good adhesion, the battery made so just is made particularly to have arrived the heavy-current discharge later stage in discharge process, lithium cathode sheet containing three-dimensional collector can evenly be reacted always fully, significantly improve the security performance of battery.
Although be described preferred embodiment of the present utility model above, the utility model is not limited to above-mentioned embodiment, and above-mentioned embodiment is only schematic, is not restrictive.Those of ordinary skill in the art, under enlightenment of the present utility model, not departing under the ambit that the utility model aim and claim protect, can also make a lot of form.These all belong within protection range of the present utility model.
Claims (4)
1. the three-dimensional current collector structure of lithium primary battery negative plate, comprises metal forming collector substrate, it is characterized in that: on collector substrate, make the three-dimensional current collector structure of one side or two-sided three-dimensional current collector structure, described collector substrate surrounding leaves smooth edge; The three-dimensional current collector structure of described one side makes concave cone hole for being uniformly distributed in collector substrate one side; Described two-sided three-dimensional current collector structure makes concave cone hole for being uniformly distributed in collector substrate one side, the collector substrate between adjacent two concave cone holes is shaped with convex cone hole; Described convex cone hole and described concave cone hole are distributed on the two sides of collector substrate.
2. the three-dimensional current collector structure of lithium primary battery negative plate according to claim 1, is characterized in that: described metal forming is nickel foil or Copper Foil.
3. the three-dimensional current collector structure of lithium primary battery negative plate according to claim 1 and 2, it is characterized in that: the distribution mode in described concave cone hole is matrix type, the degree of depth in concave cone hole is 0.05mm ~ 0.5mm, and the shape that the concave cone hole wall on concave cone hole is overlooked is square, rectangle, triangle, trapezoidal, circular one.
4. the three-dimensional current collector structure of lithium primary battery negative plate according to claim 1 and 2, it is characterized in that: described convex cone hole is matrix distribution mode, the shape that the convex cone hole wall on convex cone hole is overlooked is square, rectangle, triangle, trapezoidal, circular one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436290.XU CN204118183U (en) | 2014-08-01 | 2014-08-01 | The three-dimensional current collector structure of lithium primary battery negative plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420436290.XU CN204118183U (en) | 2014-08-01 | 2014-08-01 | The three-dimensional current collector structure of lithium primary battery negative plate |
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| CN204118183U true CN204118183U (en) | 2015-01-21 |
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| CN201420436290.XU Expired - Fee Related CN204118183U (en) | 2014-08-01 | 2014-08-01 | The three-dimensional current collector structure of lithium primary battery negative plate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390695A (en) * | 2015-12-01 | 2016-03-09 | 王立军 | Graphene ultralow-temperature power lithium battery |
| CN105655150A (en) * | 2016-03-01 | 2016-06-08 | 东阳市元江电工有限公司 | Electrochemical power supply electrode |
| CN109686984A (en) * | 2018-12-17 | 2019-04-26 | 惠州佳合能新能源科技有限公司 | Collector, collector preparation method and application collector cathode pole piece |
| CN109716561A (en) * | 2017-01-09 | 2019-05-03 | 株式会社Lg化学 | Lithium metal patterning and the electrochemical appliance using it |
| CN117577868A (en) * | 2023-12-04 | 2024-02-20 | 天津大学 | Integrated lithium-boron alloy single battery and preparation method thereof |
-
2014
- 2014-08-01 CN CN201420436290.XU patent/CN204118183U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390695A (en) * | 2015-12-01 | 2016-03-09 | 王立军 | Graphene ultralow-temperature power lithium battery |
| CN105390695B (en) * | 2015-12-01 | 2019-08-13 | 王立军 | Graphene ultralow temperature dynamic lithium battery |
| CN105655150A (en) * | 2016-03-01 | 2016-06-08 | 东阳市元江电工有限公司 | Electrochemical power supply electrode |
| CN109716561A (en) * | 2017-01-09 | 2019-05-03 | 株式会社Lg化学 | Lithium metal patterning and the electrochemical appliance using it |
| CN109716561B (en) * | 2017-01-09 | 2022-04-26 | 株式会社Lg化学 | Lithium metal patterning and electrochemical device using the same |
| US11990602B2 (en) | 2017-01-09 | 2024-05-21 | Lg Energy Solution, Ltd. | Lithium metal patterning and electrochemical device using the same |
| CN109686984A (en) * | 2018-12-17 | 2019-04-26 | 惠州佳合能新能源科技有限公司 | Collector, collector preparation method and application collector cathode pole piece |
| CN117577868A (en) * | 2023-12-04 | 2024-02-20 | 天津大学 | Integrated lithium-boron alloy single battery and preparation method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20170801 |
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| CF01 | Termination of patent right due to non-payment of annual fee |