CN204407427U - A kind of power energy storage soft bag lithium ionic cell - Google Patents

A kind of power energy storage soft bag lithium ionic cell Download PDF

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Publication number
CN204407427U
CN204407427U CN201420837364.0U CN201420837364U CN204407427U CN 204407427 U CN204407427 U CN 204407427U CN 201420837364 U CN201420837364 U CN 201420837364U CN 204407427 U CN204407427 U CN 204407427U
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China
Prior art keywords
negative
positive
plate
width
reserved
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Expired - Fee Related
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CN201420837364.0U
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Chinese (zh)
Inventor
关成善
宗继月
张敬捧
邵长旺
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Shandong Goldencell Electronics Technology Co Ltd
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Shandong Goldencell Electronics Technology Co Ltd
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Priority to CN201420837364.0U priority Critical patent/CN204407427U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Connection Of Batteries Or Terminals (AREA)

Abstract

A kind of power energy storage soft bag lithium ionic cell, provides one to promote battery discharge power, can improve again the power energy storage soft bag lithium ionic cell of the large multiplying power discharging cycle life of battery.It comprises battery core and lug, battery core is formed by stacking by positive plate and negative plate, positive plate comprises the positive active material on aluminium foil and coating aluminium foil, negative plate comprises the negative electrode active material on Copper Foil and coating Copper Foil, the width that aluminium foil is reserved on positive plate top is the twice that Copper Foil width is reserved on negative plate top, positive plate after superposition welds a positive pole ear, the first half negative plate of battery core and the latter half negative plate respectively weld a negative lug, and positive pole ear width is the twice of negative lug width.The utility model changes traditional cell lamination mode and the welding position of lug, two parts up and down of battery core are made respectively to draw a negative lug, effectively can improve the discharge power of battery, improve the large multiplying power discharging cycle performance of power energy storage soft bag lithium ionic cell.

Description

A kind of power energy storage soft bag lithium ionic cell
Technical field
The utility model relates to technical field of lithium-ion battery, particularly a kind of power energy storage soft bag lithium ionic cell.
Background technology
Lithium ion battery is because of advantages such as its voltage are high, energy density large, have extended cycle life, memory-less effect, security performance are good, environmentally friendly, and be widely used in the fields such as mobile phone, notebook computer, miniature camera, electric bicycle, motorcycle, electric automobile, have a wide range of applications future in the national defense and military equipment field such as field and photovoltaic energy storage system simultaneously.
In order to increase the battery high rate cyclic life-span, traditional method is the proportioning by adjusting anode and cathode slurry, and the content particularly improving binding agent achieves the goal.But the raising of binder content, can make the internal resistance of cell increase, increase the caloric value of battery, the energy density of battery can be reduced simultaneously.Therefore study the large multiplying power of lithium ion battery, focus that heavy-current discharge performance becomes current research.
Summary of the invention
The purpose of this utility model is: provide one to promote battery discharge power, can improve again the power energy storage soft bag lithium ionic cell of the large multiplying power discharging cycle life of battery.
The technical solution of the utility model is as follows:
A kind of power energy storage soft bag lithium ionic cell, comprise battery core and lug, battery core is formed by stacking by positive plate and negative plate, positive plate comprises the positive active material on aluminium foil and coating aluminium foil, negative plate comprises the negative electrode active material on Copper Foil and coating Copper Foil, the width that aluminium foil is reserved on positive plate top is the twice that Copper Foil width is reserved on negative plate top, positive plate after superposition welds a positive pole ear, the first half negative plate of battery core and the latter half negative plate respectively weld a negative lug, and positive pole ear width is the twice of negative lug width.
According to described power energy storage soft bag lithium ionic cell, the length that described positive plate reserves aluminium foil is 17-19mm, and width is 42mm, and reserved aluminium foil and positive plate left side distance are 6.5mm; The length of the reserved Copper Foil of described negative plate is 15-17mm, and width is 21mm, and the right of the first half negative plate and the distance of reserved Copper Foil are 30mm, and the right of the latter half negative plate and the distance of reserved Copper Foil are 8mm.
According to described power energy storage soft bag lithium ionic cell, positive pole ear and negative lug width are respectively 40mm and 20mm, and thickness is 0.2mm.
The utility model is by the design to lug position, change traditional cell lamination mode and the welding position of lug, two parts up and down of battery core are made respectively to draw a negative lug, effectively can improve the discharge power of battery, improve the large multiplying power discharging cycle performance of power energy storage soft bag lithium ionic cell, be adapted to the needs of large-scale industrial production.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model positive plate.
Fig. 2 is the structural representation of the utility model the first half negative plate.
Fig. 3 is the structural representation of the utility model the latter half negative plate.
Fig. 4 is the core strueture schematic diagram after the utility model positive/negative plate lamination.
Fig. 5 is the core strueture schematic diagram of welded bands fluid sealant lug after the utility model lamination.
In accompanying drawing: 1, positive plate; 2, negative plate; 201, the first half negative plate; 202, the latter half negative plate.
Embodiment
A kind of power energy storage soft bag lithium ionic cell, be made up of n positive plate 1 and (n+1) individual negative plate 2, positive pole ear, negative lug, barrier film, lithium-ion electrolyte, aluminum plastic film housing, wherein n is integer, requires to determine n value according to battery design.Positive plate 1 comprises aluminium foil and is coated on one deck positive active material on aluminium foil; Negative plate 2 comprises Copper Foil and is coated on one deck negative electrode active material on Copper Foil.The width of the reserved aluminium foil of positive plate 1 is the twice of the reserved Copper Foil width of negative plate 2.Positive plate 1 is arranged a positive pole ear, the first half negative plate 201 and the latter half negative plate 202 arrange a negative lug respectively, and the width of positive pole ear is the twice of negative lug width.
As Fig. 1, positive plate head leaves the reserved aluminium foil of uncoated positive active material, and the length of reserved aluminium foil is 17-19mm, and width is 42mm, and the distance of positive plate 1 left side and aluminium foil and positive plate 1 left side are 6.5mm to the distance reserving the aluminium foil left side.
As Fig. 2-3, negative plate head leaves the reserved Copper Foil of uncoated negative electrode active material, the length that negative plate 2 reserves Copper Foil is 15-17mm, and width is 21mm; The first half negative plate 201 is 30mm near the distance of a lateral edges on the right of reserved Copper Foil of reserved Copper Foil; The latter half negative plate 202 is 8mm near the distance of a lateral edges on the right side of reserved Copper Foil of reserved Copper Foil.
Positive pole ear and negative lug width are respectively 40mm and 20mm, and thickness is 0.2mm.
For making those skilled in the art understand the purpose of this utility model, technical scheme and advantage better, below in conjunction with accompanying drawing and embodiment to the utility model/further description.Wherein, the positive active material in the utility model, negative electrode active material, barrier film and electrolyte are same as the prior art.
As shown in Figure 1, described positive plate 1 comprises aluminium foil and is coated on one deck positive active material on aluminium foil.Wherein, adopt gap coating method coating, described positive plate head leaves the reserved aluminium foil of uncoated positive active material; By positive plate 1 be arranged on the positive plate positive pole ear reserved on aluminium foil and form positive pole of the present utility model.
As shown in Figures 2 and 3, described negative plate 2 comprises Copper Foil and is coated on one deck negative electrode active material on Copper Foil, and wherein, adopt gap coating method coating, described negative plate head leaves the reserved aluminium foil of uncoated negative electrode active material; First negative lug is welded on the reserved Copper Foil of the first half negative plate 201, and the second negative lug is welded on the reserved Copper Foil of the latter half negative plate 202, forms negative pole of the present utility model by described negative plate 2 and two negative lug.
In the present embodiment, the length that positive plate 1 reserves aluminium foil is 17-19mm, and width is 42mm, and positive plate 1 is 6.5mm near the distance of a lateral edges to reserved aluminium foil of reserving aluminium foil.The length that negative plate 2 reserves Copper Foil is 15-17mm, and width is 21mm; The first half negative plate 201 is 30mm near the distance of a lateral edges to reserved Copper Foil of reserving Copper Foil, and the latter half negative plate 202 is 8mm near the distance of a lateral edges to reserved Copper Foil of reserving Copper Foil.
Positive pole ear of the present utility model is the twice of negative lug width, and wherein the width of positive pole ear and negative lug is respectively 40mm and 20mm, and positive and negative lug thickness is 0.2mm.
As shown in Figure 4, the positive pole ear of band lug fluid sealant and two negative lug are welded on the positive/negative plate of the battery core shown in Fig. 4, the battery core of welded bands fluid sealant lug after the final lamination formed as shown in Figure 5.Then after aluminum plastic film encapsulation, finished product of the present utility model is obtained.

Claims (3)

1. a power energy storage soft bag lithium ionic cell, comprise battery core and lug, battery core is formed by stacking by positive plate (1) and negative plate (2), it is characterized in that: positive plate (1) comprises the positive active material on aluminium foil and coating aluminium foil, negative plate (2) comprises the negative electrode active material on Copper Foil and coating Copper Foil, the width that aluminium foil is reserved on positive plate (1) top is the twice that Copper Foil width is reserved on negative plate (2) top, the upper welding positive pole ear of positive plate (1) after superposition, the first half negative plate (201) of battery core and the latter half negative plate (202) be a welding negative lug respectively, positive pole ear width is the twice of negative lug width.
2. according to the power energy storage soft bag lithium ionic cell described in claim 1, it is characterized in that: the length of the reserved aluminium foil of described positive plate (1) is 17-19mm, and width is 42mm, reserved aluminium foil and positive plate (1) left side distance are 6.5mm; The length of the reserved Copper Foil of described negative plate (2) is 15-17mm, and width is 21mm, and the right of the first half negative plate (201) and the distance of reserved Copper Foil are 30mm, and the right of the latter half negative plate (202) and the distance of reserved Copper Foil are 8mm.
3. according to the power energy storage soft bag lithium ionic cell described in claim 2, it is characterized in that: positive pole ear and negative lug width are respectively 40mm and 20mm, thickness is 0.2mm.
CN201420837364.0U 2014-12-26 2014-12-26 A kind of power energy storage soft bag lithium ionic cell Expired - Fee Related CN204407427U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420837364.0U CN204407427U (en) 2014-12-26 2014-12-26 A kind of power energy storage soft bag lithium ionic cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420837364.0U CN204407427U (en) 2014-12-26 2014-12-26 A kind of power energy storage soft bag lithium ionic cell

Publications (1)

Publication Number Publication Date
CN204407427U true CN204407427U (en) 2015-06-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114628856A (en) * 2021-07-23 2022-06-14 万向一二三股份公司 Soft package lithium ion power battery pack tab structure
WO2023134480A1 (en) * 2022-01-12 2023-07-20 宁德时代新能源科技股份有限公司 Electrode assembly, battery cell, battery, and electrical device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114628856A (en) * 2021-07-23 2022-06-14 万向一二三股份公司 Soft package lithium ion power battery pack tab structure
WO2023134480A1 (en) * 2022-01-12 2023-07-20 宁德时代新能源科技股份有限公司 Electrode assembly, battery cell, battery, and electrical device

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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
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150617

Termination date: 20161226