CN211629251U - Temperature-change-resistant energy storage component - Google Patents
Temperature-change-resistant energy storage component Download PDFInfo
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- CN211629251U CN211629251U CN201922270835.XU CN201922270835U CN211629251U CN 211629251 U CN211629251 U CN 211629251U CN 201922270835 U CN201922270835 U CN 201922270835U CN 211629251 U CN211629251 U CN 211629251U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model belongs to the technical field of the energy storage components and parts, especially, relate to a temperature resistant becomes energy storage components and parts. The utility model provides a temperature-change-resistant energy storage component, which comprises an energy storage component and a flexible temperature control material layer; the flexible temperature control material layer comprises a phase change material layer and a heat insulation layer, and the phase change material layer is bonded with the heat insulation layer; the flexible temperature control material layer twine in the outside of energy storage components and parts just the winding of flexible temperature control material layer the number of piles of energy storage components and parts is more than two-layer, is on same layer in the flexible temperature control material layer, the phase change material layer with the insulating layer for energy storage components and parts from inside to outside sets up. The utility model discloses in, flexible accuse temperature material layer can make energy storage components and parts temperature be difficult to rise fast or descend under high temperature or low temperature environment, solves thermal-insulated, heat preservation and the accuse temperature problem of energy storage components and parts under high temperature and the low temperature environment, and this temperature resistant becomes energy storage components and parts and all is suitable for under high temperature or low temperature environment.
Description
Technical Field
The utility model belongs to the technical field of the energy storage components and parts, especially, relate to a temperature resistant becomes energy storage components and parts.
Background
Lithium ion batteries are one of the most widely used rechargeable secondary batteries at present, and are widely used in the fields of electric vehicles, energy storage, consumer electronics and the like. The lithium ion battery has the advantages of high energy density, long cycle life, no memory effect and the like. However, lithium ion batteries are prone to generate heat during charging and discharging, and particularly during high-power charging and discharging, the heat generation is high, the internal and surface temperatures of the batteries are high, the service life of the batteries is rapidly reduced, and potential safety hazards are prone to be caused due to overhigh temperature. In addition, the service life of the lithium ion battery is also affected when the lithium ion battery is used in a low-temperature environment, and lithium metal dendrites are likely to be formed during low-temperature charging, so that the battery is short-circuited and ignited. Similarly, other energy storage components also face the problem that potential safety hazards are easily generated due to overhigh temperature and the service life is influenced due to overlow temperature. At present, the cooling means of the energy storage component mainly comprises air cooling and liquid cooling, and the air cooling has the advantages of simple system structure, low cost, high energy density of a battery system and poor cooling effect. The liquid cooling has the advantages of high cooling speed and high efficiency, but has complex structure, high cost and low energy density of an energy storage system.
Therefore, it is necessary to develop a more advanced cooling technology for the energy storage device, and how to change the temperature resistance of the energy storage device becomes a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a temperature resistant becomes energy storage components and parts for solve energy storage components and parts high temperature and produce the potential safety hazard easily, the temperature crosses the problem that influences life excessively.
The utility model discloses a concrete technical scheme as follows:
a temperature change resistant energy storage component comprises an energy storage component and a flexible temperature control material layer;
the flexible temperature control material layer comprises a phase change material layer and a heat insulation layer, and the phase change material layer is bonded with the heat insulation layer;
the flexible temperature control material layer twine in the outside of energy storage components and parts just the winding of flexible temperature control material layer the number of piles of energy storage components and parts is more than two-layer, is on same layer in the flexible temperature control material layer, the phase change material layer with the insulating layer for energy storage components and parts from inside to outside sets up.
Preferably, the phase change material of the phase change material layer is selected from an inorganic phase change material, an organic phase change material and/or a composite phase change material;
the heat insulation material of the heat insulation layer is selected from vacuum heat insulation plates, aerogel felts, foamed plastics, rock wool, silicates, foamed glass, ceramic fibers, glass fibers and/or aerogels.
Preferably, the phase-change material layer comprises more than two different phase-change material blocks;
the phase-change material layer is formed by splicing more than two different phase-change material blocks.
Preferably, the heat insulation layer comprises more than two different heat insulation blocks;
the heat insulation layer is formed by splicing more than two different heat insulation blocks.
Preferably, the phase change temperature of the phase change material layer is 30-70 ℃.
Preferably, the thermal conductivity of the thermal insulation layer is not more than 0.1W/m.K.
Preferably, the phase change material layer and the thermal insulation layer are bonded by an adhesive.
Preferably, the energy storage component is a battery or a super capacitor.
To sum up, the utility model provides a temperature-change-resistant energy storage component, which comprises an energy storage component and a flexible temperature control material layer; the flexible temperature control material layer comprises a phase change material layer and a heat insulation layer, and the phase change material layer is bonded with the heat insulation layer; the flexible temperature control material layer twine in the outside of energy storage components and parts just the winding of flexible temperature control material layer the number of piles of energy storage components and parts is more than two-layer, is on same layer in the flexible temperature control material layer, the phase change material layer with the insulating layer for energy storage components and parts from inside to outside sets up. The utility model discloses in, phase change material layer and insulating layer set up by interior and outside for energy storage components and parts, the insulating layer can the separation or delay the heat of external environment and energy storage components and parts's heat exchange, phase change material layer can absorb the heat of energy storage components and parts during operation release, make temperature control within suitable range, avoid high temperature or low temperature operation, thereby increase of service life and improvement fail safe nature, make temperature-resistant change energy storage components and parts temperature variation, make energy storage components and parts temperature be difficult to rise fast or descend under high temperature or low temperature environment, can solve the thermal-insulated of energy storage components and parts under high temperature and the low temperature environment, keep warm and control the temperature problem, temperature-resistant becomes all suitable for under high temperature or low temperature environment of components and parts. And, the utility model discloses a flexible accuse temperature material layer twines in energy storage components and parts, and flexible accuse temperature material layer need not to make into specific shape and can be applied to the resistant temperature of different shapes and become energy storage components and parts, need not to develop specific mould according to energy storage components and parts, reduces manufacturing cost, and simultaneously, easy operation when flexible accuse temperature material layer uses can realize quick installation, can solve different shapes like the resistant temperature of complicated shape become thermal-insulated, keep warm and the accuse temperature problem of energy storage components and parts.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a schematic structural view of a flexible temperature control material layer according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a temperature-change-resistant energy storage component in an embodiment of the present invention;
illustration of the drawings: 1. a phase change material layer; 2. a thermal insulation layer; 3. and an energy storage component.
Detailed Description
The utility model provides a temperature resistant becomes energy storage components and parts for solve the too high potential safety hazard that produces easily of energy storage components and parts temperature, the temperature crosses the problem that influences life excessively.
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a flexible temperature control material layer in an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a temperature-resistant variable energy storage component in an embodiment of the present invention. The embodiment of the utility model provides a provide a temperature resistant becomes an embodiment of energy storage components and parts includes: the energy storage component 3 and the flexible temperature control material layer;
the flexible temperature control material layer comprises a phase change material layer 1 and a heat insulation layer 2, and the phase change material layer 1 is bonded with the heat insulation layer 2;
the number of layers of the flexible temperature control material layer wound outside the energy storage component 3 and the number of layers of the flexible temperature control material layer wound around the energy storage component 3 are more than two, and in the same layer of flexible temperature control material layer, the phase change material layer 1 and the heat insulation layer 2 are arranged from inside to outside relative to the energy storage component 3.
The utility model discloses temperature-resistant becomes energy storage components and parts adopts flexible temperature control material layer to control the temperature, the number of piles that flexible temperature control material layer twined energy storage components and parts 3 in the outside of energy storage components and parts 3 and flexible temperature control material layer twined energy storage components and parts 3 is more than two-layer, in same layer flexible temperature control material layer, phase change material layer 1 and insulating layer 2 set up from inside to outside for energy storage components and parts 3, temperature-resistant becomes energy storage components and parts work under external high temperature environment, when external environment temperature is higher than phase change material's phase transition temperature, because the separation effect of insulating layer 2, external heat is difficult to be fast, transmit in a large number to phase change material layer 1, phase change material layer; when the energy storage component 3 close to one side of the phase change material layer 1 generates heat due to the working process and the surface temperature of the energy storage component 3 reaches the phase change temperature of the phase change material in the phase change material layer 1, the phase change material absorbs the heat on the surface of the energy storage component 3 to keep the energy storage component 3 at a proper working temperature, so that the temperature uniformity of the energy storage component is improved, and the service life of the energy storage component is obviously prolonged; when the temperature of the external environment is lower than the temperature of the phase-change material or the energy storage component 3 stops working and generates heat, the heat absorbed by the phase-change material is slowly released to the external environment, and the temperature of the phase-change material is restored below the phase-change temperature again. And, the utility model discloses a flexible accuse temperature material layer twines in energy storage components and parts 3, and specific shape need not to make into on the flexible accuse temperature material layer, can realize quick installation, convenient easy-to-use, and use cost is low.
The embodiment of the utility model provides a phase change material layer 1 and insulating layer 2 set up by interior and outside for energy storage components and parts 3, insulating layer 2 can the separation or delay the heat of external environment and energy storage components and parts 3's heat exchange, phase change material layer 1 can absorb the heat of energy storage components and parts 3 during operation release, make temperature control within suitable scope, avoid high temperature or low temperature operation, thereby increase of service life and improvement fail safe nature, make temperature-resistant energy storage components and parts temperature variation, make energy storage components and parts 3 be difficult to rise fast or descend under high temperature or low temperature environment, can solve the thermal-insulated of energy storage components and parts 3 under high temperature and low temperature environment, keep warm and the accuse temperature problem, temperature-resistant becomes energy storage components and parts and all is suitable for under high temperature or. And, the embodiment of the utility model provides an adopt flexible accuse temperature material layer to twine in energy storage components and parts 3, flexible accuse temperature material layer need not to make into specific shape and can be applied to the resistant temperature of different shapes and become energy storage components and parts, need not to develop specific mould according to energy storage components and parts 3, reduces manufacturing cost, and simultaneously, easy operation when flexible accuse temperature material layer used can realize quick installation, can solve different shapes like the resistant temperature of complicated shape becomes thermal-insulated, heat preservation and the accuse temperature problem of energy storage components and parts.
In the embodiment of the present invention, the phase change material of the phase change material layer 1 is selected from inorganic phase change materials, organic phase change materials and/or composite phase change materials;
the inorganic phase change material is preferably a hydrate of an inorganic salt selected from sodium salt hydrate, potassium salt hydrate, lithium salt hydrate, magnesium salt hydrate, calcium salt hydrate and/or aluminum salt hydrate.
The organic phase change material is selected from paraffin, higher aliphatic hydrocarbon, higher fatty acid, amide and/or high molecular polymer.
The composite phase-change material is a phase-change material formed by mixing an inorganic phase-change material, an organic phase-change material and/or a filling material (support material), an auxiliary material and the like, and preferably the composite phase-change material contains paraffin, expanded graphite and a high polymer material.
Particularly, when the phase change material is made of an amorphous material, the phase change material is packaged in advance and then is bonded with the heat insulation layer. The amorphous material means that the phase-change material cannot keep the original solid shape after the phase change when the temperature reaches or is higher than the phase-change temperature point. The utility model discloses a solution phase change material in advance encapsulates and can not keep original solid morphology problem after taking place the phase transition for the material of encapsulating in advance can select from plastic film, plastic-aluminum membrane, passive aluminium membrane and alloy film etc..
The insulation material of the insulation layer 2 is selected from the group consisting of vacuum insulation panels, aerogel blankets, foams, rock wool, silicates, foamed glass, ceramic fibers, glass fibers and/or aerogels, preferably aerogels.
In the embodiment of the utility model, the phase-change material layer 1 comprises more than two different phase-change material blocks;
the phase-change material layer 1 is formed by splicing more than two different phase-change material blocks.
The heat insulation layer 2 comprises more than two different heat insulation blocks;
the heat insulation layer 2 is formed by splicing more than two different heat insulation blocks.
The phase-change material block and the heat insulation block are distinguished by the phase-change material and the heat insulation material respectively.
Phase change material layer 1 is formed by the concatenation of the phase change material piece of two above differences, and insulating layer 2 is formed by the concatenation of the heat insulating block of two above differences, can make the different parts of energy storage components and parts 3 use different phase change material and thermal insulation material, realizes better accuse temperature effect.
The phase change material layer 1 can be formed by splicing more than two different phase change material blocks at intervals, and the heat insulation layer 2 can be formed by splicing more than two different heat insulation blocks at intervals.
It should be noted that the number of the phase change material blocks to be spliced is more than one, and the number of the heat insulation blocks to be spliced is more than one, which can be determined according to the needs, and is not specifically limited herein.
In the embodiment of the present invention, the phase transition temperature of the phase change material layer 1 is 30-70 ℃, preferably 40-50 ℃.
In the embodiment of the present invention, the thermal conductivity of the thermal insulation layer 2 is not more than 0.1W/m.K, preferably not more than 0.03W/m.K.
In the embodiment of the utility model provides an in, phase change material layer 1 and insulating layer 2 bond through the adhesive.
In the embodiment of the utility model provides an in, energy storage components and parts 3 are battery or ultracapacitor system.
The battery may be a lithium ion battery, a lead acid battery, or other secondary batteries. It should be noted that other electronic devices and the energy storage component 3 may also use a flexible temperature control material layer for heat insulation, heat preservation, and temperature control, which is not limited herein.
The battery can be a battery pack which is a combination of a plurality of battery cells connected in parallel or in series.
It should be noted that the utility model discloses resistant temperature becomes energy storage components and parts thermal-insulated, keep warm and control the temperature effectual, when energy storage components and parts 3 are the battery, the positive negative pole of battery can be wrapped up in flexible accuse temperature material layer, still can wrap up accessories such as circuit protection board.
Example 1
Use 26650 cylinder type lithium ion battery, at the outside cladding of battery two-layer the utility model discloses flexible accuse temperature material layer. Wherein, the phase change materials of the two phase change material layers are composite phase change materials, and the phase change temperature point is 48 ℃; the heat insulating materials are all aerogel. Thereafter, the cell was placed in an oven at 50 ℃ for 1 hour and 6 hours, and the temperature of the cell was measured, respectively.
Example 2
The same battery as in example 1 was used, and the battery was covered with two layers at the outside. The phase change material of the phase change material layer close to one side of the battery is a composite phase change material, and the phase change temperature point is 40 ℃; the phase change material of the phase change material layer far away from one side of the battery is a composite phase change material, and the phase change temperature point is 48 ℃; the heat insulating materials are all aerogel. The total thickness of the two phase change material layers in this embodiment is the same as that of the two phase change material layers in embodiment 1, and the total thickness of the thermal insulation material layers is the same as that of the two thermal insulation material layers in embodiment 1. Thereafter, the cell was placed in an oven at 50 ℃ for 1 hour and 6 hours, and the temperature of the cell was measured, respectively.
Example 3
The same battery as in example 1 was used, and the battery was covered with two layers at the outside. The phase change material of the phase change material layer close to one side of the battery is a composite phase change material, and the phase change temperature point is 40 ℃; the phase change material of the phase change material layer far away from one side of the battery is a paraffin organic phase change material, and the phase change temperature point is 48 ℃; the heat insulating materials are all aerogel. The total thickness of the two phase change material layers in this embodiment is the same as that of the two phase change material layers in embodiment 1, and the total thickness of the two thermal insulation material layers is the same as that of the two thermal insulation material layers in embodiment 1. Thereafter, the cell was placed in an oven at 50 ℃ for 1 hour and 6 hours, and the temperature of the cell was measured, respectively.
Comparative example 1
The same cells as in example 1 were placed in an oven at 50 ℃ for 1 hour and 6 hours, and the temperature of the cells was measured, respectively.
Comparative example 2
The same battery as in example 1 was used, and the outside of the battery was coated with a layer of composite phase change material, and then with a layer of thermal insulation material, the phase change temperature point of the phase change material was 48 ℃, and the thermal insulation material was aerogel. The thickness of the composite phase-change material is the same as that of the phase-change material layer in the embodiment 1, and the thickness of the heat-insulating material is the same as that of the heat-insulating material layer in the embodiment 1. Thereafter, the cell was placed in an oven at 50 ℃ for 1 hour and 6 hours, and the temperature of the cell was measured, respectively.
Please refer to table 1 for the result, place the temperature after 1 hour and 6 hours in 50 ℃ oven for embodiment 1 ~ 3 and comparative example 1 ~ 2 battery, the result shows, use the utility model discloses the temperature that the battery of flexible accuse temperature material layer can be shelved 1 hour after the environment of 50 ℃ and keep the battery is not higher than 38 ℃, is less than the temperature of battery in comparative example 1 ~ 2, the utility model discloses the thermal-insulated and accuse temperature problem of energy storage components and parts can more effectively be solved to flexible accuse temperature material layer.
TABLE 1 temperatures after 1 hour and 6 hours of standing in 50 ℃ oven for batteries of examples 1-3 and comparative examples 1-2
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A temperature change resistant energy storage component is characterized by comprising an energy storage component and a flexible temperature control material layer;
the flexible temperature control material layer comprises a phase change material layer and a heat insulation layer, and the phase change material layer is bonded with the heat insulation layer;
the flexible temperature control material layer is wound outside the energy storage component, the number of layers of the flexible temperature control material layer wound around the energy storage component is more than two, and in the same layer of flexible temperature control material layer, the phase change material layer and the heat insulation layer are arranged from inside to outside relative to the energy storage component;
the phase change material layer comprises more than two different phase change material blocks;
the phase-change material layer is formed by splicing more than two different phase-change material blocks;
the heat insulation layer comprises more than two different heat insulation blocks;
the heat insulation layer is formed by splicing more than two different heat insulation blocks.
2. The temperature-change-resistant energy storage component as claimed in claim 1, wherein the phase change material of the phase change material layer is selected from inorganic phase change materials, organic phase change materials and/or composite phase change materials;
the heat insulation material of the heat insulation layer is selected from vacuum heat insulation plates, aerogel felts, foamed plastics, rock wool, silicates, foamed glass, ceramic fibers, glass fibers and/or aerogels.
3. The temperature-change-resistant energy storage component as claimed in claim 2, wherein the phase change temperature of the phase change material layer is 30-70 ℃.
4. The temperature-change-resistant energy storage component as claimed in claim 2, wherein the thermal conductivity of the thermal insulation layer is not more than 0.1W/m-K.
5. The temperature-change-resistant energy storage component as claimed in claim 2, wherein the phase change material layer and the thermal insulation layer are bonded by an adhesive.
6. The temperature-change-resistant energy storage component as claimed in claim 1, wherein the energy storage component is a battery or a super capacitor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922270835.XU CN211629251U (en) | 2019-12-17 | 2019-12-17 | Temperature-change-resistant energy storage component |
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| CN201922270835.XU CN211629251U (en) | 2019-12-17 | 2019-12-17 | Temperature-change-resistant energy storage component |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114171323A (en) * | 2021-11-30 | 2022-03-11 | 深圳大学 | Flexible supercapacitor and preparation method and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114171323A (en) * | 2021-11-30 | 2022-03-11 | 深圳大学 | Flexible supercapacitor and preparation method and application thereof |
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Address after: Room 501-503, annex building, Huaye building, No.1-3 Chuimao new street, Xihua Road, Yuexiu District, Guangzhou City, Guangdong Province 510000 Patentee after: China Southern Power Grid Power Technology Co.,Ltd. Address before: Room 501-503, annex building, Huaye building, No.1-3 Chuimao new street, Xihua Road, Yuexiu District, Guangzhou City, Guangdong Province 510000 Patentee before: GUANGDONG ELECTRIC POWER SCIENCE RESEARCH INSTITUTE ENERGY TECHNOLOGY Co.,Ltd. |