CN207852828U - A kind of soft pack cell - Google Patents
A kind of soft pack cell Download PDFInfo
- Publication number
- CN207852828U CN207852828U CN201820237599.4U CN201820237599U CN207852828U CN 207852828 U CN207852828 U CN 207852828U CN 201820237599 U CN201820237599 U CN 201820237599U CN 207852828 U CN207852828 U CN 207852828U
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- Prior art keywords
- battery core
- lug
- sealing strip
- naked battery
- naked
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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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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides a kind of soft pack cell, packaging film including naked battery core, positive pole ear, negative lug and the naked battery core of encapsulation, the naked battery core positive plate and negative plate are connect with positive pole ear and negative lug respectively, the edge of the packaging film forms sealing strip, the sealing strip includes lug sealing strip, lug side seal side and naked battery core sealing strip, in the side equipped with lug, at least part of naked battery core sealing strip is less than lug sealing strip at a distance from naked battery core at a distance from naked battery core.Scheme used by the utility model can reduce the volume of battery core, mitigate the weight of battery core, keep battery core package assembly compacter, improve the energy density of battery pack.
Description
Technical field
The utility model is related to a kind of soft pack cells.
Background technology
With the fast development of the industries such as electronic communication technology and new-energy automobile, the lithium ion two as main power source
Primary cell is also developed rapidly.Wherein, soft-package battery because with it is small, light-weight, higher than energy, safe, set
A variety of advantages such as flexible are counted, and are widely used in new-energy automobile and mobile electronic product field.
Existing soft bag lithium ionic cell mainly uses aluminum plastic film as packaging material, aluminum plastic film by outer layer nylon layer, in
Layer aluminium foil layer and internal layer polypropylene layer bond hot-pressing processing through binder and form.Lithium ion battery packaging technology is using tradition heat
Packaged type is pressed, naked battery core is placed in the aluminum plastic film bag behind punching hole, in cell polar ear side and the other lateral locations of battery core by two
Layer aluminum plastic film carries out hot-pressing, edge-sealing.Sealing the closedtop area to be formed and side seal area in cell polar ear side and other sides has centainly
Width, especially closedtop area are linear type sealing strip in the prior art, need to occupy certain space, to later stage soft pack cell
Group Design bring certain limitation, seriously affected the volume energy density of soft-package battery group.
Utility model content
In order to keep battery beautiful, reduce the volume of battery, mitigate the weight of battery, improves the energy density per unit volume and again of battery
For amount than energy, the utility model provides a kind of soft pack cell, including naked battery core, positive pole ear, negative lug and the naked battery core of encapsulation
Packaging film, the naked battery core positive plate and negative plate connect with positive pole ear and negative lug respectively, the side of the packaging film
Edge forms sealing strip, and the sealing strip includes lug sealing strip, lug side seal side and naked battery core sealing strip, equipped with lug
Side, at least part of naked battery core sealing strip are less than lug sealing strip at a distance from naked battery core at a distance from naked battery core.
The lug sealing strip is the sealing strip being enclosed in gel, that is, forms the stacking knot of packaging film-lug-packaging film
Structure, lug side seal side are the sealing strip positioned at lug side, and the naked battery core sealing strip is non-positioned at naked battery core side
The sealing strip in lug region.In the side equipped with lug, at least part of naked battery core sealing strip is less than at a distance from naked battery core
Design of the lug sealing strip at a distance from naked battery core can make full use of the space of naked battery core setting lug side, the structure it is close
Edge sealing under the premise of ensureing battery core sealing effect, can discharge lug two compared with linear type sealing strip in the prior art
The space of side can make full use of the space of the lug both sides, keep structure compacter when being assembled to battery core, to
The volume for reducing battery pack, improves the energy density of battery core.In the utility model, sealing strip refers to sealing at a distance from naked battery core
The outlying outer edge from naked battery core is at a distance from naked battery core.
In a kind of embodiment of the utility model, the shape on lug side seal side includes rectangle, kidney-shaped, arch
With it is at least one of trapezoidal.
The shape of sealing strip should according to the demand that naked battery core and the shape and battery modules of lug connecting portion assemble into
Row design, no matter naked battery core or lug are regular shape or irregular shape, ensure at least part of naked battery core sealing
Side is less than lug sealing strip at a distance from naked battery core at a distance from naked battery core.
In a kind of embodiment of the utility model, the width on lug side seal side is close more than or equal to naked battery core
The width of edge sealing.
When soft pack cell charge and discharge, calorific value is very big, and after rapid nitriding, soft pack cell is charging
When heat generation discharge than usual bigger, lug side seal side and the sealing strip of naked battery core sealing strip connecting portion are
Stress concentration position, it is more easily rupturable, therefore sealing hem width degree herein is increased, it is more advantageous to the stability of battery core.
In a kind of embodiment of the utility model, the positive pole ear and negative lug are arranged in the same of naked battery core
Side.
In a kind of embodiment of the utility model, the naked battery core sealing strip between the positive pole ear and negative lug
With at a distance from naked battery core be equal to lug sealing strip at a distance from naked battery core；It is naked on the outside of the positive pole ear and/or negative lug
Battery core sealing strip is less than lug sealing strip at a distance from naked battery core at a distance from naked battery core.
Naked battery core sealing strip described in a kind of embodiment of the utility model between positive pole ear and negative lug
With at a distance from naked battery core be less than lug sealing strip at a distance from naked battery core.
Positive and negative lug is arranged at the same side of naked battery core, the naked battery core sealing strip between positive pole ear and negative lug
With at a distance from naked battery core be less than or equal to lug sealing strip at a distance from naked battery core, to be improved while meeting assembly demand
The volume energy density of battery pack.
In a kind of embodiment of the utility model, the positive pole ear and negative lug are separately positioned on naked battery core
Opposite sides.
Position of the lug in naked battery core is designed according to the final stack manner of soft pack cell, can be located at naked electricity
Any one arrangement mode in the same side of core or opposite both sides.
In a kind of embodiment of the utility model, the width of the lug sealing strip is sealed more than or equal to naked battery core
The width on side.
For the sealing effect of naked battery core sealing strip, since lug sealing strip is not that two layers of packaging film is directly close
Envelope, but be sealed by being sealed in package lug in gel, thus leakproofness is relatively weak, can pass through and reinforce sealing strip
Width compensate, to reinforcing the leakproofness of the sealing strip at gel to ensure the safety and stability of battery core.
In a kind of embodiment of the utility model, lug side seal side is sealed with naked battery core sealing strip or lug
Chamfering is arranged in side junction；So that the sealing strip not cracky at the position.
In a kind of embodiment of the utility model, the width of the sealing strip is 2-8mm.
In order to improve the energy density of battery, the size of sealing strip is minimized, the size of 2-8mm is ensureing battery core sealing
The utilization rate in space is improved while effect.
In a kind of embodiment of the utility model, the width of the sealing strip is 5mm.
Include using the advantageous effect of this programme：The free space for making full use of soft pack cell releases lug both sides
Space keeps structure compacter, improves the volume energy density of battery pack；The design of sealing hem width degree considers entire Soft Roll electricity
The working condition of core is reinforced at stress concentration position and weak seal position so that soft pack cell more safety and stability.
Description of the drawings
Fig. 1 show a kind of schematic diagram of embodiment disclosed by the utility model；
Fig. 2 show a kind of schematic diagram of embodiment disclosed by the utility model；
Fig. 3 show a kind of schematic diagram of embodiment disclosed by the utility model；
Fig. 4 show a kind of schematic diagram of embodiment disclosed by the utility model；
Wherein, 21- positive pole ears, 22- negative lugs, 23- gels, 3- packaging films, 31- lug sealing strips, 32- lugs
Side seal side, the naked battery core sealing strips of 33-.
Specific implementation mode
The embodiments of the present invention are described below in conjunction with the accompanying drawings, however the utility model is not restricted to following implementation
Example.
Embodiment 1
As shown in Figure 1, the present embodiment provides a kind of soft pack cell, including naked battery core, positive pole ear 21,22 and of negative lug
The packaging film 3 of naked battery core is encapsulated, the naked battery core positive plate and negative plate are connect with positive pole ear 21 and negative lug 22 respectively,
The edge of the packaging film forms sealing strip, and the sealing strip includes lug sealing strip 31, lug side seal side 32 and naked battery core
Sealing strip 33, the naked battery core sealing strip 33 between positive pole ear 21 and negative lug 22 are less than lug at a distance from naked battery core and seal
Side 31 is at a distance from naked battery core, and the naked battery core sealing strip 33 in 22 outside of positive pole ear 21 and negative lug is at a distance from naked battery core
Less than lug sealing strip 31 at a distance from naked battery core.
Embodiment 2
As shown in Fig. 2, the present embodiment provides a kind of soft pack cell, including naked battery core, positive pole ear 21,22 and of negative lug
The packaging film 3 of naked battery core is encapsulated, the naked battery core positive plate and negative plate are connect with positive pole ear 21 and negative lug 22 respectively,
The positive pole ear 21 and negative lug 22 are arranged in the same side of naked battery core, and the edge of the packaging film 3 forms the sealing of 5mm
Side, the sealing strip include lug sealing strip 31, lug side seal side 32 and naked battery core sealing strip 33, positive pole ear 21 and cathode
Naked battery core sealing strip 33 between lug 22 is less than lug sealing strip 31 at a distance from naked battery core at a distance from naked battery core, positive pole
The naked battery core sealing strip 33 in 22 outside of ear 21 and negative lug is at a distance from naked battery core again smaller than lug sealing strip 31 and naked battery core
Distance, lug side seal side 32 be rectangle.
Embodiment 3
The present embodiment provides a kind of soft pack cells, including naked battery core, positive pole ear 21, negative lug 22 and the naked battery core of encapsulation
Packaging film 3, the naked battery core positive plate and negative plate connect with positive pole ear 21 and negative lug 22 respectively, the anode pole
Ear 21 and negative lug 22 are arranged in the same side of naked battery core, and the edge of the packaging film 3 forms sealing strip, the sealing strip packet
Lug sealing strip 31, lug side seal side 32 and naked battery core sealing strip 33 are included, it is naked between positive pole ear 21 and negative lug 22
Battery core sealing strip 33 is equal to lug sealing strip 31 at a distance from naked battery core at a distance from naked battery core, positive pole ear 21 and negative lug
The naked battery core sealing strip 33 in 22 outsides is less than lug sealing strip 31 at a distance from naked battery core at a distance from naked battery core, lug side seal
Side 32 is trapezoidal, and width of the lug side seal side 32 far from naked battery core one end is 3mm, and the width close to naked battery core one end is 8mm,
The width of sealing strip between both ends changes linearly, and lug sealing strip 31 and naked 33 width of battery core sealing strip are 5mm, the pole
The width on ear side seal side 32 is more than the width of naked battery core sealing strip 33.
Embodiment 4
As shown in figure 3, the present embodiment provides a kind of soft pack cell, including naked battery core, positive pole ear 21,22 and of negative lug
The packaging film 3 of naked battery core is encapsulated, the naked battery core positive plate and negative plate are connect with positive pole ear 21 and negative lug 22 respectively,
The positive pole ear 21 and negative lug 22 are arranged in the same side of naked battery core, and the edge of the packaging film 3 forms sealing strip, institute
It includes lug sealing strip 31, lug side seal side 32 and naked battery core sealing strip 33, positive pole ear 21 and negative lug to state sealing strip
Naked battery core sealing strip 33 between 22 is less than lug sealing strip 31 at a distance from naked battery core at a distance from naked battery core, positive pole ear 21
With the naked battery core sealing strip 33 in the outside of negative lug 22 with naked battery core at a distance from again smaller than lug sealing strip 31 and naked battery core away from
From the width of the lug sealing strip 31 is 4mm, is more than the width 3mm of naked battery core sealing strip 33, and lug side seal side 32 is waist
Shape；The outer edge on lug side seal side 32 is arc-shaped, and lug side seal side 32 is connect with naked battery core sealing strip 33
The width at position is arc-shaped the widest part and width is 5mm, and the most narrow width at other arc-shaped positions is 3mm.
Embodiment 5
As shown in figure 4, the present embodiment provides a kind of soft pack cell, including naked battery core, positive pole ear 21,22 and of negative lug
The packaging film 3 of naked battery core is encapsulated, the naked battery core positive plate and negative plate are connect with positive pole ear 21 and negative lug 22 respectively,
The positive pole ear 21 and negative lug 22 are separately positioned on the opposite sides of naked battery core, and the edge of the packaging film 3 forms close
Edge sealing, the sealing strip include lug sealing strip 31, lug side seal side 32 and naked battery core sealing strip 33, positive pole ear 21 and negative
The naked battery core sealing strip 33 of 22 both sides of pole lug is less than lug sealing strip 31 at a distance from naked battery core at a distance from naked battery core, lug
Side seal side 32 is rectangle, and the width of the lug sealing strip 31 is more than the width of naked battery core sealing strip 33.
The basic principles and main features of the utility model have been shown and described above.The technical staff of the industry should
Solution, the present utility model is not limited to the above embodiments, and what is described in the above embodiment and the description is only the utility model
Principle, the utility model also has various changes and improvements on the premise of not departing from the spirit and scope of the utility model, these
Changes and improvements are both fallen in claimed the scope of the utility model.The protection domain of the requires of the utility model is by appended
Claims and its equivalent define.
Claims (9)
1. a kind of soft pack cell includes the packaging film of naked battery core, positive pole ear, negative lug and the naked battery core of encapsulation, the naked electricity
Core positive plate and negative plate are connect with positive pole ear and negative lug respectively, and the edge of the packaging film forms sealing strip, special
Sign is：The sealing strip includes lug sealing strip, lug side seal side and naked battery core sealing strip, in the side equipped with lug,
At least part of naked battery core sealing strip is less than lug sealing strip at a distance from naked battery core at a distance from naked battery core.
2. soft pack cell according to claim 1, it is characterised in that：The shape on lug side seal side include rectangle,
Kidney-shaped, arch and at least one of trapezoidal.
3. soft pack cell according to claim 1, it is characterised in that：The width on lug side seal side is greater than or equal to
The width of naked battery core sealing strip.
4. soft pack cell according to claim 1, it is characterised in that：The positive pole ear and negative lug are arranged in naked electricity
The same side of core.
5. soft pack cell according to claim 4, it is characterised in that：Naked electricity between the positive pole ear and negative lug
Core sealing strip is equal to lug sealing strip at a distance from naked battery core at a distance from naked battery core.
6. soft pack cell according to claim 4, it is characterised in that：Naked electricity between the positive pole ear and negative lug
Core sealing strip is less than lug sealing strip at a distance from naked battery core at a distance from naked battery core.
7. soft pack cell according to claim 1, it is characterised in that：The positive pole ear and negative lug are separately positioned on
The opposite sides of naked battery core.
8. soft pack cell according to claim 1, it is characterised in that：The width of the lug sealing strip is greater than or equal to naked
The width of battery core sealing strip.
9. soft pack cell according to claim 1, it is characterised in that：Lug side seal side and naked battery core sealing strip or
Chamfering is arranged in lug sealing strip junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820237599.4U CN207852828U (en) | 2018-02-10 | 2018-02-10 | A kind of soft pack cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820237599.4U CN207852828U (en) | 2018-02-10 | 2018-02-10 | A kind of soft pack cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207852828U true CN207852828U (en) | 2018-09-11 |
Family
ID=63409469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820237599.4U Active CN207852828U (en) | 2018-02-10 | 2018-02-10 | A kind of soft pack cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207852828U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111326681A (en) * | 2018-12-14 | 2020-06-23 | 微宏动力系统（湖州）有限公司 | Soft package battery core and battery system |
| CN113270671A (en) * | 2021-05-13 | 2021-08-17 | 宁德新能源科技有限公司 | Battery cell and power utilization device |
| WO2021189264A1 (en) * | 2020-03-24 | 2021-09-30 | 东莞新能安科技有限公司 | Electrochemical device and electronic device |
| CN113690550A (en) * | 2021-07-14 | 2021-11-23 | 东莞新能源科技有限公司 | Battery cell, battery and electric equipment |
| CN114207931A (en) * | 2021-04-09 | 2022-03-18 | 宁德新能源科技有限公司 | Battery cell and power utilization device |
| WO2022160264A1 (en) * | 2021-01-29 | 2022-08-04 | 东莞新能安科技有限公司 | Battery pack and electrical device |
| US20220285766A1 (en) * | 2021-03-03 | 2022-09-08 | Ningde Amperex Technology Limited | Cell and electrical apparatus |
| CN116435670A (en) * | 2023-06-12 | 2023-07-14 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
-
2018
- 2018-02-10 CN CN201820237599.4U patent/CN207852828U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111326681A (en) * | 2018-12-14 | 2020-06-23 | 微宏动力系统（湖州）有限公司 | Soft package battery core and battery system |
| CN111326681B (en) * | 2018-12-14 | 2024-04-23 | 微宏公司 | Soft packet of electric core and battery system |
| WO2021189264A1 (en) * | 2020-03-24 | 2021-09-30 | 东莞新能安科技有限公司 | Electrochemical device and electronic device |
| WO2022160264A1 (en) * | 2021-01-29 | 2022-08-04 | 东莞新能安科技有限公司 | Battery pack and electrical device |
| US20220285766A1 (en) * | 2021-03-03 | 2022-09-08 | Ningde Amperex Technology Limited | Cell and electrical apparatus |
| CN114207931A (en) * | 2021-04-09 | 2022-03-18 | 宁德新能源科技有限公司 | Battery cell and power utilization device |
| WO2022213379A1 (en) * | 2021-04-09 | 2022-10-13 | 宁德新能源科技有限公司 | Battery cell and electrical device |
| CN113270671A (en) * | 2021-05-13 | 2021-08-17 | 宁德新能源科技有限公司 | Battery cell and power utilization device |
| CN113270671B (en) * | 2021-05-13 | 2024-04-16 | 宁德新能源科技有限公司 | Battery core and electricity utilization device |
| CN113690550A (en) * | 2021-07-14 | 2021-11-23 | 东莞新能源科技有限公司 | Battery cell, battery and electric equipment |
| CN116435670A (en) * | 2023-06-12 | 2023-07-14 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
| CN116435670B (en) * | 2023-06-12 | 2023-09-15 | 宁德新能源科技有限公司 | Electrochemical device and electric equipment |
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