CN214821560U - Waterproof heat insulation sheet of battery - Google Patents
Waterproof heat insulation sheet of battery Download PDFInfo
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- CN214821560U CN214821560U CN202120147374.1U CN202120147374U CN214821560U CN 214821560 U CN214821560 U CN 214821560U CN 202120147374 U CN202120147374 U CN 202120147374U CN 214821560 U CN214821560 U CN 214821560U
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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 belongs to the technical field of the thermal insulation material technique and specifically relates to a waterproof heat shield of battery, including heat shield body and the waterproof cover of high temperature resistant of cladding in the heat shield body outside, the heat shield body includes the insulating layer and is located the fire-retardant layer of insulating layer both sides, the waterproof cover of high temperature resistant forms high temperature resistant film vacuum cladding in the heat shield body outside. The utility model discloses a thermal-insulated function is realized through the insulating layer of heat shield body to the fire-retardant layer through the insulating layer both sides plays fire-retardant effect, for the battery provides the safety guarantee, still at the high temperature resistant waterproof cover of outside vacuum cladding of heat shield body, can play good waterproof effect, effectively avoids the heat shield to absorb water the reduction in strength, avoids battery pack moisture to damage the battery and cause the incident even greatly etc..
Description
Technical Field
The utility model belongs to the technical field of thermal insulation material technique and specifically relates to a waterproof heat insulating sheet of battery.
Background
With the strong support of the country on the development of new energy vehicles, the production and marketing quantity of electric vehicles is rapidly increased, and the industrialization pace is continuously accelerated. At present, the electric automobile mainly uses a lithium ion battery as a power battery, and through development for many years, the safety of the lithium ion power battery is remarkably improved, but under extreme conditions, the lithium battery still has risks of combustion and explosion. The national and local issues various file specifications to further strengthen the fireproof requirement of the power battery and ensure the life and property safety of people.
The main power source of the new energy automobile is derived from a power battery system, and the driving performance, the safety performance and the service life of the new energy automobile are determined. Especially for pure electric vehicles, all power is derived from the battery system. The power battery system generally mainly comprises a battery module, a battery management system BMS, a thermal management system, some electrical and mechanical systems and the like. The power battery module consists of several to hundreds of battery cores which are connected in parallel and in series. Under the vehicle is in different situations of going and environment, monomer electricity core can produce certain heat because its self resistance when the output electric energy, makes self temperature rise. High temperature operational environment and violent collision are two biggest merits that destroy lithium ion battery, arouse battery burning, explosion, and power battery system produces a large amount of heat at the course of the work and gathers in narrow and small battery box, and if the heat can not disperse fast in time, the life-span and the performance of battery module can receive very big influence, appear thermal runaway even, lead to fire explosion etc. so domestic new forms of energy power battery system thermal management more concern in the heat dissipation and monomer level thermal runaway mechanism and characteristic research. The high-efficiency heat insulation flame retardation and thermal runaway protection between the battery cores are less concerned, but when a certain battery monomer triggers thermal runaway, the heat generation quantity increases suddenly, the heat dissipation quantity is far less than the heat generation quantity, the heat is transferred to surrounding batteries, large-scale thermal runaway of the surrounding batteries can be rapidly caused, and potential safety hazards caused by thermal runaway level of the monomer thermal runaway triggering and then spreading to the whole battery system are formed. Therefore, it is necessary to add heat insulation sheets between the battery cells to slow down the propagation speed of thermal runaway and to take further fire-fighting measures to strive for time.
When the battery case containing the battery is cracked or damaged due to long-term use or collision, rainwater and the like may enter to damage the battery, even causing serious safety accidents. Therefore, the waterproof performance of the heat insulation sheet is improved, a safety line can be added to the battery, and the safety is improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a waterproof heat insulating sheet of battery, this heat insulating sheet passes through the insulating layer realization heat-proof function of heat insulating sheet body to fire-retardant layer through the insulating layer both sides plays fire-retardant effect, for the battery provides the safety guarantee, still at the waterproof cover of the high temperature resistant of the outside vacuum cladding of heat insulating sheet body, can play good water-proof effects, effectively avoid the heat insulating sheet to absorb water the reduce intensity, avoid battery pack moisture too big etc. to damage the battery and cause the incident even.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a waterproof heat insulating sheet of battery, includes the heat insulating sheet body and the waterproof cover of high temperature resistant of cladding in the heat insulating sheet body outside, the heat insulating sheet body includes insulating layer and the fire-retardant layer that is located the insulating layer both sides, the waterproof cover of high temperature resistant forms high temperature resistant film vacuum cladding in the heat insulating sheet body outside.
Specifically, the high-temperature resistant film is one of a PET polyester film, a nylon film and an aluminum-plated film.
Specifically, the heat insulation layer includes a first heat insulation layer, a second heat insulation layer, and a reinforcing layer interposed between the first heat insulation layer and the second heat insulation layer.
Specifically, the heat insulation layer is a PI foam compression sheet formed by hot pressing PI foam.
Specifically, the flame-retardant layer is obtained by coating a flame-retardant coating on the outer side of the heat-insulating layer.
Specifically, the reinforcing layer is a mesh cloth or a flame-retardant cloth, and the reinforcing layer is adhered between the first heat-insulating layer and the second heat-insulating layer through an adhesive.
Specifically, the density of the PI foam compression piece is 100-200 kg/m3The thickness is 1-6 mm.
Specifically, the density of the PI foam compression piece is 120-180 kg/m3The thickness is 2-3 mm.
Specifically, the adsorption vacuum degree of the PI foam compression sheet is greater than 0.05 MPa.
Specifically, the adsorption vacuum degree of the PI foam compression sheet is greater than 0.06 MPa.
The utility model has the advantages that:
(1) the utility model discloses a battery waterproof heat shield realizes thermal-insulated function through the insulating layer of heat shield body to play fire-retardant effect through the fire-retardant layer of insulating layer both sides, provide the safety guarantee for the battery, still at the high temperature resistant waterproof cover of outside vacuum cladding of heat shield body, can play good waterproof effect, effectively avoid the heat shield to absorb water and reduce intensity, avoid battery pack moisture too big etc. damage battery even cause the incident;
(2) the heat insulation layer of the utility model comprises a first flame-retardant layer, a second flame-retardant layer and an enhancement layer clamped between the first flame-retardant layer and the second flame-retardant layer, the area of the heat insulation sheet required by the battery with large volume is larger, the arrangement of the enhancement layer can effectively improve the overall strength of the heat insulation sheet, and the heat insulation sheet is prevented from being damaged in the production, transportation, battery assembly and even use processes;
(3) the heat insulating layer is a PI foam compression sheet formed by PI foam through hot pressing, and has good high temperature resistance effect.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view of another embodiment insulation sheet;
in the figure: 1. a high temperature resistant waterproof jacket; 21. a thermal insulation layer; 211. a first insulating layer; 212. a second thermal insulation layer; 213. an enhancement layer; 22. a flame retardant layer.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
A waterproof and heat-insulating sheet for a battery is shown in figures 1-2 and comprises a heat-insulating sheet body and a high-temperature-resistant waterproof sleeve 1 coated on the outer side of the heat-insulating sheet body, wherein the heat-insulating sheet body comprises a heat-insulating layer 21 and flame-retardant layers 22 positioned on two sides of the heat-insulating layer 21, and the high-temperature-resistant waterproof sleeve 1 is formed by vacuum coating of a high-temperature-resistant film on the outer side of the heat-insulating sheet body. This heat shield passes through the insulating layer 21 realization heat-insulating function of heat shield body, and the fire-retardant layer 22 through insulating layer 21 both sides plays fire-retardant effect, for the battery provides the safety guarantee, still at the waterproof cover 1 of the high temperature resistant of the outside cladding of heat shield body, waterproof cover 1 of high temperature resistant is with high temperature resistant film vacuum cladding in the heat shield body outside, can play good waterproof effect, effectively avoid the heat shield to absorb water the reduction in strength, avoid battery pack moisture to damage the battery and cause the incident even greatly etc..
In a specific embodiment, the high temperature resistant film is one of a PET polyester film, a nylon film and an aluminum-plated film.
In a specific embodiment, as shown in fig. 3, the thermal insulation layer 21 includes a first thermal insulation layer 211, a second thermal insulation layer 212, and a reinforcement layer 213 interposed between the first thermal insulation layer 211 and the second thermal insulation layer 212. Although the battery used in the current electric automobile is small in volume and needs a small area of the heat insulation sheet, the strength of the foam board is enough to meet the strength requirement of the heat insulation sheet. However, with the increase of the demand for the electric quantity of the battery and the expansion of the application field of the battery, the volume of the battery is inevitably increased, and accordingly, a heat insulating sheet with a larger area is also required. For larger areas of the insulation, the foam board itself has insufficient strength, and the insulation is more susceptible to damage during production, transportation, cell assembly, and even use. And the setting of enhancement layer 3 can effectively improve the bulk strength of heat shield, increases toughness, avoids the heat shield to take place to damage in production, transportation, battery equipment and even the use.
In one specific embodiment, the thermal insulation layer 21 is a compressed sheet of PI foam formed by hot pressing PI foam. The PI foam compression sheet has good high-temperature resistance, can play a good heat insulation effect, and can effectively slow down the propagation speed of thermal runaway.
In a specific embodiment, the flame retardant layer 22 is obtained by applying a flame retardant coating on the outer side of the thermal insulation layer 21.
In a specific embodiment, the reinforcing layer 213 is a mesh cloth or a flame retardant cloth, and the reinforcing layer 213 is adhered between the first thermal insulation layer 211 and the second thermal insulation layer 212 by an adhesive. In a specific embodiment, the reinforcing layer 213 is made of flame-retardant cloth, and a flame-retardant line can be added to further slow down the spread of fire.
In one specific embodiment, the density of the PI foam compression sheet is 100-3The thickness is 1-6 mm.
In one specific embodiment, the density of the PI foam compression sheet is 120-180 kg/m3The thickness is 2-3 mm. Under the condition of the density, the thickness of the foam compression sheet is 2-3mm, and a good heat insulation effect can be realized.
In a specific embodiment, the PI foam compression sheet has an adsorption vacuum greater than 0.05 MPa. The foam compression piece with the vacuum degree of 0.05 MPa can be directly sucked up by a vacuum sucker type mechanical arm, and the foam compression piece is conveyed to a required position through the mechanical arm in the assembling process and cannot fall off in the conveying process.
In a specific embodiment, the PI foam compression sheet has an adsorption vacuum greater than 0.06 MPa.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The utility model provides a waterproof heat insulating sheet of battery which characterized in that: including the heat insulating sheet body and cladding at high temperature resistant waterproof cover (1) in the heat insulating sheet body outside, the heat insulating sheet body includes insulating layer (21) and fire-retardant layer (22) that are located insulating layer (21) both sides, high temperature resistant waterproof cover (1) is formed the high temperature resistant film vacuum cladding in the heat insulating sheet body outside.
2. The waterproof and heat-insulating sheet for battery according to claim 1, wherein: the high-temperature resistant film is one of a PET polyester film, a nylon film and an aluminum-plated film.
3. The waterproof and heat-insulating sheet for battery according to claim 1, wherein: the heat insulation layer (21) comprises a first heat insulation layer (211), a second heat insulation layer (212) and a reinforcing layer (213) sandwiched between the first heat insulation layer (211) and the second heat insulation layer (212).
4. The waterproof and heat-insulating sheet for battery according to claim 1, wherein: the heat insulation layer (21) is a PI foam compression sheet formed by hot pressing PI foam.
5. The waterproof and heat-insulating sheet for battery according to claim 1, wherein: the flame-retardant layer (22) is obtained by coating flame-retardant paint on the outer side of the heat-insulating layer (21).
6. The waterproof and heat-insulating sheet for battery according to claim 3, wherein: the reinforcing layer (213) is a mesh cloth or a flame-retardant cloth, and the reinforcing layer (213) is adhered between the first heat-insulating layer (211) and the second heat-insulating layer (212) through an adhesive.
7. The waterproof and heat-insulating sheet for battery according to claim 4, wherein: the density of the PI foam compression sheet is 100-3The thickness is 1-6 mm.
8. The waterproof and heat-insulating sheet for battery according to claim 7, wherein: the density of the PI foam compression sheet is 120-180 kg/m3The thickness is 2-3 mm.
9. The waterproof and heat-insulating sheet for battery according to claim 4, wherein: the adsorption vacuum degree of the PI foam compression sheet is greater than 0.05 MPa.
10. The waterproof and heat-insulating sheet for battery according to claim 9, wherein: the adsorption vacuum degree of the PI foam compression sheet is greater than 0.06 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120147374.1U CN214821560U (en) | 2021-01-19 | 2021-01-19 | Waterproof heat insulation sheet of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120147374.1U CN214821560U (en) | 2021-01-19 | 2021-01-19 | Waterproof heat insulation sheet of battery |
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| Publication Number | Publication Date |
|---|---|
| CN214821560U true CN214821560U (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120147374.1U Active CN214821560U (en) | 2021-01-19 | 2021-01-19 | Waterproof heat insulation sheet of battery |
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| CN (1) | CN214821560U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114361740A (en) * | 2022-03-19 | 2022-04-15 | 浙江荣泰电工器材股份有限公司 | Low-thermal-conductivity mica composite part applied to thermal runaway protection among battery cells and preparation method thereof |
-
2021
- 2021-01-19 CN CN202120147374.1U patent/CN214821560U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114361740A (en) * | 2022-03-19 | 2022-04-15 | 浙江荣泰电工器材股份有限公司 | Low-thermal-conductivity mica composite part applied to thermal runaway protection among battery cells and preparation method thereof |
| CN114361740B (en) * | 2022-03-19 | 2022-06-17 | 浙江荣泰电工器材股份有限公司 | Be applied to thermal runaway protection low heat conduction mica composite between electric core |
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