CN209357773U - A kind of device improving soft-package battery cycle life - Google Patents
A kind of device improving soft-package battery cycle life Download PDFInfo
- Publication number
- CN209357773U CN209357773U CN201821933079.3U CN201821933079U CN209357773U CN 209357773 U CN209357773 U CN 209357773U CN 201821933079 U CN201821933079 U CN 201821933079U CN 209357773 U CN209357773 U CN 209357773U
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- Prior art keywords
- pilot hole
- battery
- soft
- pressure
- top board
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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 discloses a kind of device for improving soft-package battery cycle life, including pressure regulator panel, top board, middle pressing plate, lower platen and bolt；The bolt successively passes perpendicularly through the first pilot hole, the second pilot hole, third pilot hole and the 4th pilot hole, the bolt end head and bottom end are respectively equipped with the first nut and the second nut is fixed, spring is equipped between the pressure regulator panel and the top board, the spring pocket is on bolt；Pressure sensor is equipped between the top board and medium pressure plate, the pressure sensor is placed in the center of medium pressure plate；Soft-package battery is equipped between medium pressure plate and the lower platen.The utility model can inhibit volume expansion of the soft-package battery in cyclic process, to improve battery cycle life；In addition, stress variation of the battery in charge and discharge process can be recorded by the pressure sensor of equipment, finishing screen selects the optimum pressure for giving battery, for battery PACK in groups when used pressure reference is provided.
Description
Technical field
The utility model relates to field of lithium ion battery, and in particular to a kind of device for improving soft-package battery cycle life.
Background technique
Recently as electric car wideling popularize in the whole world, dynamic lithium battery is grown rapidly.According to battery
Battery can be divided into cylindrical battery, rectangular aluminum-shell battery and soft-package battery three classes by outer packing, and soft-package battery is due to having safety
Property is good, have extended cycle life, the advantages that internal resistance is small, energy density is high and on the market rapidly by large-scale application.
However just because soft-package battery is aluminum plastic film outer packing, elasticity is larger, and positive and negative pole material is in charge and discharge process
Volume expansion can occur again, held in particular with the use of silicium cathode so that the volume expansion problem of soft-package battery is more serious
Continuous volume expansion causes the SEI film (solid electrolyte membrane) of electrode interface rupturing always and repairing, and electrode is straight with electrolyte
Side reaction occurs for contact, constantly consumes electrolyte and active lithium to repair SEI film, eventually leads to battery capacity and sharply decline
Subtract.Therefore, it studies the stress variation of battery and volume expansion of the battery in charge and discharge process is inhibited to follow to battery is improved
The ring service life is of great significance.Current either academia or industrial circle mostly concentrates in the research to positive and negative pole material,
For directly inhibiting the research of the stress variation of cell expansion and battery in charge and discharge process less with physical method, so
A kind of device is needed to inhibit battery volume expansion, studies battery stress variation, and then reaches the mesh for improving battery cycle life
's.
Summary of the invention
(1) technical problems to be solved
It is easy to happen the volume expansion above problem in order to solve the soft-package battery charge and discharge process of the prior art, this is practical new
Type provides a kind of device for directly inhibiting soft-package battery to expand with physical method.
(2) technical solution
In order to achieve the above object, the main technical schemes of the utility model use include:
It is a kind of improve soft-package battery cycle life device, including pressure regulator panel, top board, middle pressing plate, lower platen and
Bolt；The pressure regulator panel quadrangle is respectively equipped with the first pilot hole；The top board quadrangle is respectively equipped with the second pilot hole；Institute
It states middle pressing plate quadrangle and is respectively equipped with third pilot hole；The lower platen quadrangle is respectively equipped with the 4th pilot hole；The bolt is successively
The first pilot hole, the second pilot hole, third pilot hole and the 4th pilot hole are passed perpendicularly through, the bolt end head and bottom end are set respectively
There are the first nut and the second nut to be fixed, spring, the spring are equipped between the pressure regulator panel and the top board
It covers on bolt；Pressure sensor is equipped between the top board and medium pressure plate, the pressure sensor is placed in described
The center of pressing plate；Soft-package battery is equipped between medium pressure plate and the lower platen.
Preferably, the pressure regulator panel, top board, middle pressing plate, lower platen are by metal material, high molecular material, plank
One of or a variety of compositions.
Preferably, the pressure sensor quantity is 1-10, and shape is round or rectangular.
(3) beneficial effect
It is compared with the prior art, the beneficial effects of the utility model are: the utility model can inhibit soft-package battery following
Volume expansion during ring, to improve battery cycle life；In addition, battery can be recorded by the pressure sensor of equipment
Stress variation in charge and discharge process studies the relationship between cycle life and pressure, and finishing screen, which is selected, gives battery most
Excellent pressure, for battery PACK in groups when used pressure reference is provided.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the partial structural diagram of the utility model.
[description of symbols]
1: pressure regulator panel；
101: the first pilot holes
2: spring；
3: top board；
301: the second pilot holes；
4: middle pressing plate；
401: third pilot hole；
5: lower platen；
501: the four pilot holes；
6: bolt；
7: the first nuts；
8: the second nuts；
9: pressure sensor；
10: soft-package battery.
Specific embodiment
It is with reference to the accompanying drawing, right by specific embodiment in order to understand in order to preferably explain the utility model
The utility model is described in detail.
As shown in Figure 1, the utility model provides a kind of technical solution:
A kind of device improving soft-package battery cycle life, including pressure regulator panel 1, top board 3, middle pressing plate 4, lower platen
5。
1 four jiaos of pressure regulator panel are respectively equipped with the first pilot hole 101；3 four jiaos of top board are respectively equipped with the second pilot hole
301；4 four jiaos of middle pressing plate is respectively equipped with third pilot hole 401；Lower platen quadrangle is respectively equipped with the 4th pilot hole 501.
Bolt 6 successively passes perpendicularly through the first pilot hole 101, the second pilot hole 301, third pilot hole 401 and the 4th guiding
Hole 501, and 6 top of bolt and bottom end are respectively equipped with the first nut 7 and the second nut 8 is fixed.
Spring 2 is equipped between pressure regulator panel 1 and top board 3,2 sets of spring in 6 outside of bolt；Top board 3 and middle pressing plate 4
Between be equipped with pressure sensor 9, pressure sensor 9 is placed in the center of middle pressing plate 4；It is equipped between middle pressing plate 4 and lower platen 5 soft
Packet battery 10.
In use, downward pressure can be applied to pressure regulator panel 1, then pass through the power of spring 2, top board 3 and middle pressing plate 4
Conduction finally applies pressure to soft-package battery 10, prevents the expansion of soft-package battery 10, while can also be measured using pressure sensor 9
The pressure value of different extruding degree, for being used with experiment.
Preferably, pressure regulator panel 1, top board 3, middle pressing plate 4, lower platen 5 are by metal material, high molecular material, plank
One of or a variety of compositions.
Preferably, the model MIK-P300 of pressure sensor 9, quantity 1-10, shape are round or rectangular.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It can be understood as that these embodiments can be carried out a variety of variations without departing from the principles and spirit of the present invention, repair
Change, replacement and variant, the scope of the present invention is defined by the appended.
Claims (3)
1. it is a kind of improve soft-package battery cycle life device, it is characterised in that: including pressure regulator panel (1), top board (3),
Middle pressing plate (4), lower platen (5) and bolt (6)；Pressure regulator panel (1) quadrangle is respectively equipped with the first pilot hole (101)；Institute
It states top board (3) quadrangle and is respectively equipped with the second pilot hole (301)；Medium pressure plate (4) quadrangle is respectively equipped with third pilot hole
(401)；The lower platen quadrangle is respectively equipped with the 4th pilot hole (501)；The bolt (6) successively passes perpendicularly through the first pilot hole
(101), the second pilot hole (301), third pilot hole (401) and the 4th pilot hole (501), bolt (6) top and bottom end
It is respectively equipped with the first nut (7) and the second nut (8) is fixed, between the pressure regulator panel (1) and the top board (3)
Equipped with spring (2), the spring (2) covers on bolt (6)；Pressure is equipped between the top board (3) and medium pressure plate (4)
Sensor (9), the pressure sensor (9) are placed in the center of medium pressure plate (4)；Medium pressure plate (4) and the pushing
Soft-package battery (10) are equipped between plate (5).
2. improving the device of soft-package battery cycle life as described in claim 1, it is characterised in that: the pressure regulator panel
(1), top board (3), middle pressing plate (4), lower platen (5) are by one of metal material, high molecular material, plank or a variety of groups
At.
3. improving the device of soft-package battery cycle life as claimed in claim 1 or 2, it is characterised in that: the pressure sensing
Device (9) quantity is 1-10, and shape is round or rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821933079.3U CN209357773U (en) | 2018-11-22 | 2018-11-22 | A kind of device improving soft-package battery cycle life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821933079.3U CN209357773U (en) | 2018-11-22 | 2018-11-22 | A kind of device improving soft-package battery cycle life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209357773U true CN209357773U (en) | 2019-09-06 |
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ID=67783938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821933079.3U Active CN209357773U (en) | 2018-11-22 | 2018-11-22 | A kind of device improving soft-package battery cycle life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209357773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112864464A (en) * | 2021-01-08 | 2021-05-28 | 国联汽车动力电池研究院有限责任公司 | Method and device for improving cycle performance of soft package lithium ion battery |
-
2018
- 2018-11-22 CN CN201821933079.3U patent/CN209357773U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112864464A (en) * | 2021-01-08 | 2021-05-28 | 国联汽车动力电池研究院有限责任公司 | Method and device for improving cycle performance of soft package lithium ion battery |
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