CN208655810U - A kind of drop height type lithium battery coiling core - Google Patents
A kind of drop height type lithium battery coiling core Download PDFInfo
- Publication number
- CN208655810U CN208655810U CN201821369077.6U CN201821369077U CN208655810U CN 208655810 U CN208655810 U CN 208655810U CN 201821369077 U CN201821369077 U CN 201821369077U CN 208655810 U CN208655810 U CN 208655810U
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- lithium battery
- core
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- negative electrode
- diaphragm
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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
Abstract
A kind of drop height type lithium battery coiling core, including positive plate, diaphragm and negative electrode tab, diaphragm is arranged between positive plate and negative electrode tab, three is wound into hollow tube-shape body after stacking gradually, it is equipped with interior concane gap in the expansion plane of positive plate, diaphragm and negative electrode tab, concave inward structure is equipped on the core end face of coiling and molding.In the end face of core, setting concave inward structure is to meet the structure that output electrode extends internally and design needs.The core actual volume of lithium battery can thus maximized, to improve the energy density of this kind of lithium battery, the energy density of the lithium battery of this structure and similar specification same type special lithium battery increase by 10%~20%, compared with the common lithium battery of same specification, energy density can be improved 5%~10%.
Description
Technical field:
The utility model relates to a kind of lithium battery more particularly to a kind of high-energy density lithium batteries.
Background technique:
With the fast development of various electronic products, the application field of lithium ion battery is more and more wider, and demand quickly increases
Long, people put forward higher requirements the capacity of lithium battery, and the capacity of the highly desirable existing lithium battery of people can have larger amplitude
Degree is promoted.Currently, the cylinder and rectangular lithium ion battery of industrialization are all made of stainless steel or aluminium alloy as battery case, gold
Belong to and sealed connection be fixed by the way of welding or riveting between shell and cathode metal cover board or negative metal cover board,
It, must be real using complicated seal insulation structure for electrothermal ability between positive cover board and metal shell to guarantee the insulation between positive and negative anodes
Existing, according to the prior art, the seal insulation structure for electrothermal height between cathode metal cover board, negative metal cover board and metal shell is 4
~5 millimeters, as shown in Figure 1, since metal shell 5 is connected with negative cover, positive cover board 6 and metal battery case 5 it
Between must be provided with seal insulation structure for electrothermal, positive cover board 6 is axially passing sequentially through conductive ring 61, positive clamping ring 62, clamping ring support
Frame 63 is connected with anode ear 3, and conductive ring 61, positive clamping ring 62, clamping ring bracket 63 are propped up in radial direction specific
In the inner ring of special-shaped insulating sealer 8, contact discharge between negative electrode tab and positive electrode in core 1 in order to prevent, special-shaped exhausted
It is equipped between edge sealing element 8 and the upper end of core 1 and is dielectrically separated from pad 9.The output electrode structure of this interior extension directly reduces
The bulk that core 1 is accommodated in battery case 5, causes the energy density of battery to be difficult to increase.In some big specification special type lithiums
In battery, although the radial dimension of output electrode is smaller, only output electrode part needs to extend to lithium battery interior, according to
Current lithium battery manufacturing technology, the core height of this kind of lithium battery can only be that equal height designs, therefore, can only be with output electrode
Between minimum dimension determine the height of core, it follows that lithium battery height dimension under the same conditions, battery case
Interior space is not fully used, and the core volume of this kind of lithium battery is not carried out maximization, and the energy of this kind of lithium battery is close
It spends more much lower than the lithium battery of same specification.
In order to further increase the capacity of existing lithium battery, especially the output of raising electrode needs to prolong structure into battery
The energy density of lithium battery, a kind of drop height type core high-energy density lithium battery of applicant's utility model, the lithium of this structure
The energy density of battery and similar specification same type special lithium battery increase by 10%~20%, the common lithium battery phase with same specification
Than energy density can be improved 5%~10%.
Utility model content:
The purpose of the utility model is to provide a kind of drop height type lithium battery coiling cores.
The technical scheme adopted by the utility model is that:
A kind of drop height type lithium battery coiling core, including positive plate, diaphragm and negative electrode tab, diaphragm are arranged in positive plate and negative electrode tab
Between, three is wound into hollow tube-shape body after stacking gradually, it is characterized in that: in the expansion plane of positive plate, diaphragm and negative electrode tab
It is equipped with interior concane gap, concave inward structure is equipped on the core end face of coiling and molding.
Further, there is concave inward structure in the positive end face of core.
Further, there is concave inward structure in the cathode end face of core.
Further, there is concave inward structure in the positive end face of core and cathode end face.
In the end face of core, setting concave inward structure is to meet the structure that output electrode extends internally and design needs.
The utility model designs concave inward structure at the end face position Ju Bu of core, is extended internally with to avoid output electrode
Structure is only limitted to the height of subcontract core, and then keeps core height to maximize design at other positions, can thus make
The core actual volume of lithium battery maximizes, so that the energy density of this kind of lithium battery is improved, the energy of the lithium battery of this structure
Metric density and similar specification same type special lithium battery increase by 10%~20%, compared with the common lithium battery of same specification, energy
Density can be improved 5%~10%.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram at the positive cover board of existing cylindrical lithium battery；
Fig. 2 is the structural schematic diagram for the high-energy density lithium battery that core upper and lower end face is equipped with concave inward structure；
Fig. 3 is the structural schematic diagram of the utility model；
Fig. 4 is the structural schematic diagram of battery case；
Fig. 5 is the structural schematic diagram that tubular cell shell is connect with electrode cap edges of boards；
Fig. 6 is the structural schematic diagram for the high-energy density lithium battery that core upper surface is equipped with concave inward structure；
In figure: 1- core；2- mandrel；3- anode ear；4- negative electrode lug；5- battery case；6- anode cover board；7- negative cover
Plate；8- abnormity insulating sealer；9- is dielectrically separated from pad；11- positive plate；12 diaphragms；13- negative electrode tab；14- concave inward structure；51- gold
Belong to coating；52- tube body；The port 53- end face；The port 54- outer circle side；The port 55- inner circle side；61- conductive ring；62- anode
Clamping ring；63- clamping ring bracket.
Specific embodiment:
Illustrate to illustrate specific embodiment of the present utility model with reference to the accompanying drawing:
Embodiment 1:
A kind of drop height type lithium battery coiling core, as shown in figure 3, including positive plate 11, diaphragm 12 and negative electrode tab 13, diaphragm 12
It is arranged between positive plate 11 and negative electrode tab 13, in the expansion plane of positive plate 11, diaphragm 12 and negative electrode tab 13, vertically
The center section on side is equipped with interior concane gap, three is wound into hollow tube-shape body after stacking gradually, in the core of coiling and molding
The center of upper and lower end face is equipped with concave inward structure 14.
It is a kind of structural schematic diagram of drop height type core high-energy density lithium battery shown in Fig. 2-Fig. 5, wherein core used
It is exactly the utility model, including core 1, mandrel 2, anode ear 3, negative electrode lug 4 and battery case 5, positive cover board 6 and negative cover
7, core 1 is wound into hollow tube-shape body after being stacked gradually by positive plate 11, diaphragm 12, negative electrode tab 13 and diaphragm 12, and is sleeved on
On mandrel 2, anode ear 3 is connected with positive plate 11, and negative electrode lug 4 is connected with negative electrode tab 13, in battery case 5, positive cover board
6, electrolyte is filled between negative cover 7 and core 1, is equipped with evacuation output electrode in the upper surface of core 1 and lower end surface
Concave inward structure 14, the battery case 5 be ceramic tube-like structure, the port end face 53 of tube body 52, port outer circle side 54 or
Metal coating 51 is equipped at least one on port inner circle side 55, the anode cover board 6 and negative cover 7 are stainless steel,
Positive cover board 6 and negative cover 7 and the battery case 5 of ceramics are sealedly and fixedly connected by welding manner.
Embodiment 2: difference from Example 1 is the structure of core, as shown in fig. 6, in this example, in core 1
End face is equipped with the concave inward structure 14 for avoiding positive output electrode structure, and lower end surface is plane.
There are many embodiments of the present invention, do not enumerate one by one herein, and core can be designed according to the structure of lithium battery and be wanted
It asks, concave inward structure 14 is arbitrarily set on core end face, and the setting quantity of concave inward structure 14 and position are unrestricted, concave inward structure
14 shape also can be changed, as long as being equipped with all schemes of concave inward structure 14 all in the protection model of the utility model in core end face
Within enclosing.
Claims (4)
1. a kind of drop height type lithium battery coiling core, including positive plate (11), diaphragm (12) and negative electrode tab (13), diaphragm (12) setting exists
Between positive plate (11) and negative electrode tab (13), three is wound into hollow tube-shape body after stacking gradually, it is characterized in that: in positive plate
(11), the expansion plane of diaphragm (12) and negative electrode tab (13) is equipped with interior concane gap, is equipped on the core end face of coiling and molding
Concave inward structure (14).
2. drop height type lithium battery coiling core according to claim 1, it is characterized in that: having indent in the positive end face of core (1)
Structure (14).
3. drop height type lithium battery coiling core according to claim 1, it is characterized in that: having indent in the cathode end face of core (1)
Structure (14).
4. drop height type lithium battery coiling core according to claim 1, it is characterized in that: positive end face and negative pole end in core (1)
Face has concave inward structure (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821369077.6U CN208655810U (en) | 2018-08-23 | 2018-08-23 | A kind of drop height type lithium battery coiling core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821369077.6U CN208655810U (en) | 2018-08-23 | 2018-08-23 | A kind of drop height type lithium battery coiling core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208655810U true CN208655810U (en) | 2019-03-26 |
Family
ID=65791305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821369077.6U Active CN208655810U (en) | 2018-08-23 | 2018-08-23 | A kind of drop height type lithium battery coiling core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208655810U (en) |
-
2018
- 2018-08-23 CN CN201821369077.6U patent/CN208655810U/en active Active
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