CN205194760U - Pressure adaptive energy storage battery packaging hardware - Google Patents
Pressure adaptive energy storage battery packaging hardware Download PDFInfo
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- CN205194760U CN205194760U CN201521035335.3U CN201521035335U CN205194760U CN 205194760 U CN205194760 U CN 205194760U CN 201521035335 U CN201521035335 U CN 201521035335U CN 205194760 U CN205194760 U CN 205194760U
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- battery
- pressure
- elastomer
- flat board
- container
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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 relates to a pressure adaptive battery packaging hardware, including battery and battery case, in battery case is arranged in to the battery, its characterized in that: still be provided with two flat boards in battery case, two relative parallel arrangement of flat board, battery arrange in between two flat boards, and the projection of battery on the flat board is located the flat board, in the battery side was kept away from to two flat boards surface respectively the equipartition have the elastomer more than 3, the surperficial rigid coupling of battery is kept away from respectively to elastomer one end with two flat boards, the other end links to each other with the battery case internal face, the elastomer is compression spring or elasticity cushion. The device can make a response according to the internal pressure change of battery in life cycle, plays balanced battery internal pressure, improves battery life's effect.
Description
Technical field
The utility model relates to a kind of lithium metal battery, metallic aluminium battery, metallic zinc battery, magnesium metal battery of pressure adaptive, belongs to alkali metal secondary battery technical field, particularly lithium-sulfur cell technical field.
Background technology
Be that the battery of representative has obtained fast development since 21 century with lithium metal battery.For lithium-sulfur cell, have the advantages such as low cost, high specific energy, environmental friendliness due to it concurrently, be subject to the extensive concern of domestic and international academia and business circles.Lithium-sulfur cell is intended obtaining extensive use in fields such as extensive energy storage, electric automobile, unmanned aerial vehicles.But the outstanding feature of this type of alkali metal battery is: the inevitable dissolution-deposition process along with metal in the electrochemical reaction process of metal side (as negative pole), the change in volume of negative electrode active material can be brought simultaneously.Meanwhile, the phenomenon that battery also can expand with heat and contract with cold when self is heated, causes certain change in volume.Particularly concerning lithium-sulfur cell, positive pole sulphur can become lithium sulfide after discharge, volumetric expansion more than 70%; Negative pole often produces uneven lithium deposition after charging, and thickness also can expand.The change in volume of positive and negative pole material can cause uncontrollable consequence to the thrust between battery pole piece.Battery failure can be made, blast even on fire time serious.
At present, the lithium-sulfur cell battery container that lithium-sulfur cell researches and develops unit used is soft plastic-aluminum shell substantially, is easily staved by the expansion that battery change produces.Even if it adopts the metallic aluminium battery container of hard to suppress it to expand, pole piece also cannot be avoided to cause diaphragm puncture because of Inner extrusion and be short-circuited.Meanwhile, for battery, electrode interior needs to ensure that necessary thrust is to reduce inner ohmic polarization, so it is necessary for evenly applying certain pressure to battery.
In current research process, the technology generally adopted is fixedly clamped with two pieces of hard clamping plate, to limit the volumetric expansion of battery.Battery can be made in this way to seem not expand although adopt, but grievous injury inside battery.The cycle life of the lithium-sulfur cell adopting this device to research and develop is difficult to the cycle life of breakthrough 100 times.How to solve this problem, become the major issue that lithium-sulfur cell future development faces.
Utility model content
The utility model is for solving above-mentioned purpose; relate to a kind of battery structure; between battery and battery container, introduce pressure regulator, effectively can alleviate the internal pressure change of battery in change in volume process, thus the effect playing protection battery structure, extend energy-storage battery useful life.
For achieving the above object, the concrete technical scheme that the utility model adopts is as follows:
A kind of cell package device of pressure adaptive, comprise battery and battery container, battery is placed in battery container in battery container, is also provided with two flat boards, two opposing parallel settings of flat board, battery is placed between two flat boards, and the projection of battery on flat board is positioned at flat board, is evenly equipped with the elastomer of more than 3 in two flat boards respectively away from the surface of battery side, elastomer one end is affixed away from the surface of battery with two flat boards respectively, and the other end is connected with battery container internal face; Elastomer is Compress Spring or elastic rubber fitting.
Battery is made up of anode pole piece superimposed successively, barrier film, cathode pole piece, and anode pole piece and cathode pole piece are arranged with two platen parallel respectively, changes and carries out self-adaptative adjustment, keep the internal structure of battery to stablize according to the pressure of inside battery; This pressure is caused by one or more change in volume in the parts forming battery, or decomposes by inside battery the gas produced and cause.
The mode of pressure adjusting is that transformation mechanical type constant pressure adjust between battery container and elastomer and/or battery container being arranged gas discharge outlet regulates.
This packaging system is made up of battery and battery container, and battery is made up of anode pole piece superimposed successively, barrier film, cathode pole piece; Two are left certain cavity between flat board and battery container, the thickness of cavity is 0.001 ~ 0.1 times of cell thickness; When battery generation physical expansion time, the space between flat board and battery container is shunk, to ensure the constant pressure between flat board and battery.
This battery container has been provided with vent valve, can ensure the stable of air pressure inside, and prevent entering of extraneous steam, oxygen and carbon dioxide.
This device can be made a response according to the change of the internal pressure of battery in life cycle, plays balancing battery internal pressure, improves the effect of battery life.
Two flat boards outside the residing region of battery projection are evenly equipped with the elastomer of more than 3 respectively away from the surface of battery side.
Accompanying drawing explanation
The vertical view of the energy-storage battery packaging system of the pressure adaptive of Fig. 1 involved by the utility model; Wherein 1-both positive and negative polarity lug, 2-battery container, 3-gas discharge outlet.
Sectional view after the pressure adaptive energy-storage battery encapsulation of Fig. 2 involved by the utility model; Wherein 1-both positive and negative polarity lug, 4-elastomer, 5-is dull and stereotyped.
Embodiment
Embodiment 1
Pressure adaptive structure (Fig. 1,2) is adopted to assemble with the lithium-sulfur cell that negative pole made by lithium metal, carbon-sulfur compound makes positive pole.The spring that the pressure of inside battery is 10 newton by each 10 pressure in two sides is formed, and the gap between battery container and flat board is 10mm.The present embodiment battery is of a size of 80 × 50 × 8, and battery container is of a size of 80 × 50 × 10.Along with the carrying out of charge and discharge cycles, both positive and negative polarity occurs to expand gradually, and when cell internal pressure is greater than 100 Newtonian times, spring is compressed, and the pressure of electrode interior is discharged.Battery under 0.1C, more than 100 times capable of circulation.
Embodiment 2,
Pressure adaptive structure (Fig. 1,2) is adopted to assemble with the lithium-sulfur cell that negative pole made by lithium metal, carbon-sulfur compound makes positive pole.The elastic force rubber cushion that the pressure of inside battery is 10 newton by each 2 pressure in two sides is formed, and the gap between battery container and flat board is 10mm.The present embodiment battery is of a size of 80 × 50 × 8, and metal battery case is of a size of 80 × 50 × 10.Along with the carrying out of charge and discharge cycles, both positive and negative polarity occurs to expand gradually, and when cell internal pressure is greater than 100 Newtonian times, elastic force rubber cushion is compressed, and the pressure of electrode interior is discharged.Battery under 0.1C, more than 100 times capable of circulation.
Embodiment 3,
Pressure adaptive structure (Fig. 1,2) is adopted to assemble with the lithium-sulfur cell that negative pole made by lithium metal, carbon-sulfur compound makes positive pole.The spring that the pressure of inside battery is 10 newton by a slice pressure is formed; One side does not place spring in addition, and direct and battery container is pressed close to.Place the one side of spring, the gap between battery container and flat board is 10mm.The present embodiment battery is of a size of 80 × 50 × 8, and metal battery case is of a size of 80 × 50 × 10.Along with the carrying out of charge and discharge cycles, both positive and negative polarity occurs to expand gradually, and when cell internal pressure is greater than 100 Newtonian times, spring is compressed, and the pressure of electrode interior is discharged.Battery under 0.1C, more than 50 times capable of circulation.
Embodiment 3,
Pressure adaptive structure (Fig. 1,2) is adopted to assemble with the lithium-sulfur cell that negative pole made by lithium metal, carbon-sulfur compound makes positive pole.The elastic force rubber cushion that the pressure of inside battery is 10 newton by a slice pressure is formed; One side does not place elastic force rubber cushion in addition, and direct and battery container is pressed close to.Place the one side of elastic force rubber cushion, the gap between battery container and flat board is 10mm.The present embodiment battery is of a size of 80 × 50 × 8, and metal battery case is of a size of 80 × 50 × 10.Along with the carrying out of charge and discharge cycles, both positive and negative polarity occurs to expand gradually, and when cell internal pressure is greater than 100 Newtonian times, elastic force rubber cushion is compressed, and the pressure of electrode interior is discharged.Battery under 0.1C, more than 50 times capable of circulation.
Comparative example 1
Do not adopt pressure adaptive structure, directly with plastic-aluminum shell encapsulation lithium-sulfur cell.Battery is of a size of 80 × 50 × 8, and metal battery case is of a size of 80 × 50 × 10.Along with the carrying out of charge and discharge cycles, both positive and negative polarity occurs to expand gradually, and when cell internal pressure is greater than 100 Newtonian times, battery occurs obviously that distortion, battery are under 0.1C, and circulate after 20 times, battery data occurs extremely.
Comparative example 2
Do not adopt pressure adaptive structure, directly with hard aluminum hull encapsulation lithium-sulfur cell.Battery is of a size of 80 × 50 × 8, and metal battery case is of a size of 80 × 50 × 10.Along with the carrying out of charge and discharge cycles, both positive and negative polarity occurs to expand gradually, and battery, under 0.1C, circulate after 10 times, and exception appears in battery data, occurs phenomenon on fire of smoldering.
Claims (7)
1. the cell package device of a pressure adaptive, comprise battery and battery container, battery is placed in battery container, it is characterized in that: in battery container, be also provided with two flat boards, two opposing parallel settings of flat board, battery is placed between two flat boards, the projection of battery on flat board is positioned at flat board, the elastomer of more than 3 is evenly equipped with respectively away from the surface of battery side in two flat boards, elastomer one end is affixed away from the surface of battery with two flat boards respectively, and the other end is connected with battery container internal face; Elastomer is Compress Spring or elastic rubber fitting.
2. according to the cell package device of pressure adaptive described in claim 1, it is characterized in that: battery is made up of anode pole piece superimposed successively, barrier film, cathode pole piece, anode pole piece and cathode pole piece are arranged with two platen parallel respectively, change according to the pressure of inside battery and carry out self-adaptative adjustment, keeping the internal structure of battery to stablize; This pressure is caused by one or more change in volume in the parts forming battery, or decomposes by inside battery the gas produced and cause.
3. according to the cell package device of pressure adaptive described in claim 1, it is characterized in that: the mode of pressure adjusting is that transformation mechanical type constant pressure adjust between battery container and elastomer and/or battery container being arranged gas discharge outlet regulates.
4. according to the cell package device of pressure adaptive described in claim 1 or 3, it is characterized in that: this packaging system is made up of battery and battery container, battery is made up of anode pole piece superimposed successively, barrier film, cathode pole piece; Two are left certain cavity between flat board and battery container, the thickness of cavity is 0.001 ~ 0.1 times of cell thickness; When battery generation physical expansion time, the space between flat board and battery container is shunk, to ensure the constant pressure between flat board and battery.
5. according to the cell package device of pressure adaptive described in claim 3, it is characterized in that: this battery container has been provided with vent valve, the stable of air pressure inside can be ensured, and prevent entering of extraneous steam, oxygen and carbon dioxide.
6. according to the cell package device of the arbitrary described pressure adaptive of claim 1-5, it is characterized in that: this device can be made a response according to the change of the internal pressure of battery in life cycle, plays balancing battery internal pressure, improves the effect of battery life.
7. according to the cell package device of pressure adaptive described in claim 1, it is characterized in that: two flat boards outside the residing region of battery projection are evenly equipped with the elastomer of more than 3 respectively away from the surface of battery side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521035335.3U CN205194760U (en) | 2015-12-14 | 2015-12-14 | Pressure adaptive energy storage battery packaging hardware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521035335.3U CN205194760U (en) | 2015-12-14 | 2015-12-14 | Pressure adaptive energy storage battery packaging hardware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205194760U true CN205194760U (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521035335.3U Expired - Fee Related CN205194760U (en) | 2015-12-14 | 2015-12-14 | Pressure adaptive energy storage battery packaging hardware |
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| Country | Link |
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| CN (1) | CN205194760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110710020A (en) * | 2017-06-08 | 2020-01-17 | Avl李斯特有限公司 | Method for mounting battery unit in housing and mounting apparatus therefor |
-
2015
- 2015-12-14 CN CN201521035335.3U patent/CN205194760U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110710020A (en) * | 2017-06-08 | 2020-01-17 | Avl李斯特有限公司 | Method for mounting battery unit in housing and mounting apparatus therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160427 Termination date: 20191214 |