CN208849021U - A kind of three-dimensional collector lithium-ion-power cell - Google Patents
A kind of three-dimensional collector lithium-ion-power cell Download PDFInfo
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- CN208849021U CN208849021U CN201821547147.2U CN201821547147U CN208849021U CN 208849021 U CN208849021 U CN 208849021U CN 201821547147 U CN201821547147 U CN 201821547147U CN 208849021 U CN208849021 U CN 208849021U
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
The utility model provides a kind of three-dimensional collector lithium-ion-power cell, including positive plate, negative electrode tab, diaphragm and shell, the positive plate, negative electrode tab is spaced apart by diaphragm and is mutually stacked or wound on being formed together battery core, the battery core is placed in shell, the positive plate includes positive electrode substrate and positive active material, the negative electrode tab includes cathode matrix and negative electrode active material, the positive electrode substrate, cathode matrix is nickel foam, the surface of the positive electrode substrate is coated with one layer of metallic aluminum, the positive active material is filled in positive electrode substrate, the negative electrode active material is filled in cathode matrix.A kind of three-dimensional collector lithium-ion-power cell of the utility model, easy to make, energy density is high, and mass density is high.
Description
Technical field
The utility model relates to a kind of three-dimensional collector lithium-ion-power cells.
Background technique
Lithium ion battery is high with its energy density, cycle life is good and is applied to the fields such as communication, number, electric car.
The method hair for improving lithium ion battery energy density at present mainly has: (1) improving the compacted density of material；(2) high capacity is selected
Positive and negative pole material；(3) high-voltage electrolyte is selected；(4) pass through optimization battery design, process recipe；(5) more thin set stream is selected
Body；And method (1)~(4) are difficult to be greatly improved under present condition, and the Improving Measurements of method (5) be nothing but select it is thinner
Aluminium foil (12 μm) and copper foil (8 μm) to realize the raising of its energy density.And negative current collector uses copper foil, there are itself
The defects of density is big, imporosity poor adhesion influences further increasing for its energy density.
Utility model content
The utility model be intended to provide it is a kind of make simple, energy density is high, mass density is high three-dimensional collector lithium from
Sub- power battery.
The utility model is realized by following scheme:
A kind of three-dimensional collector lithium-ion-power cell, including positive plate, negative electrode tab, diaphragm and shell, the positive plate,
Negative electrode tab is spaced apart by diaphragm and is mutually stacked or wound on battery core is formed together, the battery core is placed in shell, the anode
Piece includes positive electrode substrate and positive active material, and the negative electrode tab includes cathode matrix and negative electrode active material, the anode base
Body, cathode matrix are nickel foam, and the surface of the positive electrode substrate is coated with one layer of metallic aluminum, and the positive active material is filled out
It fills in positive electrode substrate, the negative electrode active material is filled in cathode matrix.
Further, the surface coated metallic aluminum of the positive electrode substrate with a thickness of 0.1~2.0 μm.
Further, the positive active material is cobalt acid lithium, LiMn2O4, nickle cobalt lithium manganate, one in nickel cobalt lithium aluminate
Kind is a variety of；The negative electrode active material is one of Si/C, graphite or a variety of.
A kind of three-dimensional collector lithium-ion-power cell of the utility model, structure is simple, easy to make, positive electrode substrate,
Cathode matrix is all made of nickel foam, and coats one layer of metallic aluminum on positive electrode substrate surface, and positive active material is filled in anode
In matrix, negative electrode active material is filled in cathode matrix, and the occupation rate of positive active material, negative electrode active material can be improved,
Positive plate, the volume energy density of negative electrode tab and mass energy density are all higher, using the nickel foam of three-dimensional structure as matrix
Material, be conducive to current density be uniformly distributed with electrolyte permeability, be uniformly distributed, the utilization rate of active material can be improved, mention
The capacity and discharge-rate performance of high-lithium ion battery, while can also be improved the heat balance in battery charge and discharge process, it mentions
High battery cycle life.
Detailed description of the invention
Fig. 1 is the schematic diagram of three-dimensional collector lithium-ion-power cell in embodiment 1；
Fig. 2 is 1C, 3C discharge curve of three-dimensional collector lithium-ion-power cell in embodiment 1；
Fig. 3 is the 1C cycle life curve figure of three-dimensional collector lithium-ion-power cell in embodiment 1.
Specific embodiment
Embodiment simply to illustrate that the utility model a kind of implementation, not as to scope of protection of the utility model
Restricted explanation.
Embodiment 1
A kind of three-dimensional collector lithium-ion-power cell, model 130mm × 110mm × 20mm, capacity 32A, such as Fig. 1
Shown, including positive plate 1, negative electrode tab 2, diaphragm 3 and shell 4, positive plate 1, negative electrode tab 2 are spaced apart by diaphragm 3 and are mutually stacked
Battery core is formed together, and battery core is placed in shell, and positive plate includes positive electrode substrate and positive active material, and negative electrode tab includes cathode
Matrix and negative electrode active material, positive electrode substrate, cathode matrix are nickel foam, and the surface of positive electrode substrate is coated with a layer thickness and is
1.5 μm of metallic aluminums, positive active material are filled in positive electrode substrate, and negative electrode active material is filled in cathode matrix, anode
Active material is nickel cobalt lithium aluminate, and negative electrode active material is the mixture of Si/C and graphite.
The three-dimensional collector lithium-ion-power cell of embodiment 1 is subjected to 1C, 3C discharge test, specific test method are as follows:
1. 0.5C constant-current discharge shelves 10min to 2.8V；2. 0.5C constant-current constant-voltage charging is to blanking voltage 4.35V, cut-off current
0.02C shelves 30min；3. 1C/3C constant-current discharge is to 2.8V, 1C, 3C discharge curve are as shown in Fig. 2, can from Fig. 2
Out, 99.98%, the 3C discharge capacity that 1C discharge capacity reaches rated capacity reaches the 99.79% of rated capacity.
The three-dimensional collector lithium-ion-power cell of embodiment 1 is subjected to the test of 1C capacity circulating, specific test method are as follows:
1. 0.5C constant-current discharge shelves 10min to 2.8V；2. 1C constant-current constant-voltage charging to blanking voltage 4.35V, cut-off current 0.02C,
30min is shelved, 3. 1C constant-current discharge to 2.8V, shelves 30min；2.~3. 500 time 4. recycling, 1C capacity circulating life curve
As shown in figure 3, discharge capacity of the cell is maintained at 93.20% or so from figure 3, it can be seen that 1C is recycled 500 times.
Embodiment 2
A kind of three-dimensional collector lithium-ion-power cell, model 32650, capacity 6A, including positive plate, negative electrode tab,
Diaphragm and shell, positive plate, negative electrode tab are spaced apart by diaphragm mutually wound on battery core is formed together, and battery core is placed in shell,
Positive plate includes positive electrode substrate and positive active material, and negative electrode tab includes cathode matrix and negative electrode active material, and positive electrode substrate is born
Pole matrix is nickel foam, and the surface of positive electrode substrate is coated with the metallic aluminum that a layer thickness is 0.5 μm, and positive active material is filled out
It fills in positive electrode substrate, negative electrode active material is filled in cathode matrix, and positive active material is cobalt acid lithium, negative electrode active material
For Si/C.
Claims (2)
1. a kind of three-dimensional collector lithium-ion-power cell, including positive plate, negative electrode tab, diaphragm and shell, the positive plate are born
Pole piece is spaced apart by diaphragm and is mutually stacked or wound on battery core is formed together, the battery core is placed in shell, it is characterised in that:
The positive plate includes positive electrode substrate and positive active material, and the negative electrode tab includes cathode matrix and negative electrode active material, institute
State positive electrode substrate, cathode matrix is nickel foam, the surface of the positive electrode substrate is coated with one layer of metallic aluminum, and the anode is living
Property substance is filled in positive electrode substrate, and the negative electrode active material is filled in cathode matrix.
2. a kind of three-dimensional collector lithium-ion-power cell as described in claim 1, it is characterised in that: the positive electrode substrate table
The metallic aluminum that bread covers with a thickness of 0.1~2.0 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821547147.2U CN208849021U (en) | 2018-09-21 | 2018-09-21 | A kind of three-dimensional collector lithium-ion-power cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821547147.2U CN208849021U (en) | 2018-09-21 | 2018-09-21 | A kind of three-dimensional collector lithium-ion-power cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208849021U true CN208849021U (en) | 2019-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821547147.2U Active CN208849021U (en) | 2018-09-21 | 2018-09-21 | A kind of three-dimensional collector lithium-ion-power cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208849021U (en) |
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2018
- 2018-09-21 CN CN201821547147.2U patent/CN208849021U/en active Active
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