CN212033111U - New forms of energy battery package thermal runaway protective structure - Google Patents
New forms of energy battery package thermal runaway protective structure Download PDFInfo
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- CN212033111U CN212033111U CN202021163061.7U CN202021163061U CN212033111U CN 212033111 U CN212033111 U CN 212033111U CN 202021163061 U CN202021163061 U CN 202021163061U CN 212033111 U CN212033111 U CN 212033111U
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- mica sheet
- mica
- battery pack
- upper shell
- thermal runaway
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- 230000001681 protective effect Effects 0.000 title description 5
- 239000010445 mica Substances 0.000 claims abstract description 92
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 92
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 10
- 239000012790 adhesive layer Substances 0.000 claims description 8
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 241000446313 Lamella Species 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
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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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- Battery Mounting, Suspending (AREA)
Abstract
A new energy battery pack thermal runaway protection structure comprises an upper shell of a battery pack, wherein reinforcing ribs are arranged on the upper shell, and the new energy battery pack thermal runaway protection structure also comprises a mica sheet layer; a mica sheet bonding area is arranged on the inner side surface of the upper shell, and a plurality of groups of mica sheets are arranged in parallel in the mica sheet bonding area to form a mica sheet layer; in the mica sheet bonding area, a limiting block and a limiting strip are respectively arranged in the area matched with each mica sheet; the mica sheet is provided with a limit groove matched with the limit block. The thermal runaway protection structure is formed by adding the mica sheet layer on the structure of the upper shell of the existing new energy battery pack, the mica sheet layer is formed by integrating and arranging a plurality of mica sheet single sheets, the structure is simple, the cost is low, the matching degree is high, thermal protection can be effectively formed on the inner side surface of the upper shell, the heat resistance and the thermal stability of the upper shell are improved, the service life of the battery pack is prolonged, the safety performance of the battery is improved, and accidents are reduced.
Description
Technical Field
The utility model relates to a shell structure of new forms of energy battery package, specifically speaking are thermal runaway protective structure of casing on new forms of energy battery package.
Background
At present, a new energy battery pack needs to meet the requirement of thermal runaway for ensuring the safety of a whole vehicle. The latest battery pack safety regulations require that a thermal runaway test is carried out on the used battery pack, the original performance of the battery pack cannot be maintained in a continuous high-temperature state due to the characteristics of the composite material, the thermal runaway of the battery pack becomes a great challenge for the upper shell of the composite material battery, and the harsh requirement for thermal runaway protection of the battery pack cannot be met only by the composite material.
With the great application of battery energy in new energy vehicle types and the attention of host factories to the whole battery pack and the safety of the whole vehicle, the thermal stability of the battery pack is taken as an important index of the safety performance of the whole battery pack of the vehicle, and meanwhile, in order to ensure the safety of the whole battery pack and the whole vehicle, special thermal protection needs to be carried out on a battery shell so as to meet the requirement of regulations on the thermal stability of the battery pack. Due to the requirements of the battery pack on energy density and light weight, the upper shell of the battery pack is made of composite materials in the conventional method, and due to the defects of the composite materials in the aspects of high temperature resistance and thermal stability, the composite materials of the upper shell can be decomposed and collapsed when the whole pack is subjected to thermal runaway and continues to reach the temperature of 800-. Therefore, the upper shell made of pure composite materials cannot keep the product structure and the protection function for a long time under a high-temperature condition, and can be damaged along with a large amount of heat and pressure released by thermal runaway of the battery pack, and once the upper shell cannot form a protection layer, the heat generated by battery combustion is possibly transmitted to the whole vehicle, so that the safety of members on the vehicle is damaged.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a to the defect that the high temperature resistant effect of last casing is poor that is formed by the combined material preparation in the battery package that mentions in the background art, provide a thermal runaway protective structure to making in the last casing of new forms of energy battery package.
The utility model adopts the technical proposal that: a new energy battery pack thermal runaway protection structure comprises an upper shell of a battery pack, wherein reinforcing ribs are arranged on the upper shell, and the new energy battery pack thermal runaway protection structure also comprises a mica sheet layer;
a mica sheet bonding area is arranged on the inner side surface of the upper shell, and a plurality of groups of mica sheets are arranged in the mica sheet bonding area in parallel to form a mica sheet layer;
in the mica sheet bonding area, a limiting block and a limiting strip are respectively arranged in the area matched with each mica sheet;
and the mica sheet is provided with a limiting groove matched with the limiting block.
Compared with the prior art, the utility model discloses a this kind of thermal runaway protective structure is structural increase mica lamella of casing on current new forms of energy battery package, and this mica lamella is integrated by a plurality of mica piece monolithic and arranges and form, simple structure, and is with low costs, and the matching degree is high, can effectively form the thermal protection in last casing inside surface, improves the heat resistance and the heat stability of casing, prolongs the life of battery package, improves the security performance of battery, reduces the occurence of failure.
As a preferred technical scheme: each group of mica sheets comprises two mica sheets which are arranged in parallel, and the adjacent edges of the two mica sheets are respectively provided with a limiting groove.
As a preferred technical scheme: the plurality of groups of mica sheets are arranged in parallel and are distributed in the mica sheet bonding area.
As a preferred technical scheme: in the mica sheet bonding area, two sides of an area corresponding to each mica sheet are respectively provided with a limiting strip and a limiting block; the limiting strips are abutted against the side edges of the mica sheets, and the limiting blocks correspond to the limiting grooves in the mica sheets.
As a preferred technical scheme: the mica sheets are fixed in the mica sheet bonding area through adhesive layers respectively, and the upper surfaces of the mica sheets, the upper surfaces of the limiting blocks and the upper surfaces of the limiting strips are parallel and level.
Drawings
Fig. 1 is a schematic structural diagram of the inner side surface of the upper shell of the present invention.
Fig. 2 is a schematic structural view of the mica sheet group of the present invention.
Fig. 3 is a schematic view of the installation position of the mica sheet and the upper shell.
Fig. 4 is a schematic diagram of the inner side structure of the upper shell after the mica sheet is pasted.
In the figure: the mica sheet bonding device comprises a reinforcing rib 1, a limiting strip 2, a limiting block 3, a mica sheet bonding region 4, an upper shell 5, a mica sheet 6, a limiting groove 7 and an adhesive layer 8.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Referring to the attached drawings 1-4, the thermal runaway prevention structure disclosed by the utility model is formed by adding a thermal protection layer formed by splicing mica sheets on the basis of the shell of the existing new energy battery pack. Mica is used as an ore material with high temperature resistance and strong heat insulation, and can effectively isolate the diffusion of heat and reduce the damage of thermal impact on the composite material. In actual production, according to the shape and structure characteristics of the upper shell, mica sheet single sheets with matched shapes are manufactured, arranged and combined, and then adhered to the inner side of the composite material upper shell to form an effective thermal protection layer.
The thermal runaway protection structure comprises an upper shell 5, wherein reinforcing ribs 1 are arranged on the upper shell, and the thermal runaway protection structure further comprises a limiting strip 2, a limiting block 3, a mica sheet bonding region 4, a mica sheet 6, a limiting groove 7 and an adhesive layer 8. The inner side surface of the upper shell is provided with a mica sheet bonding area, and a plurality of groups of mica sheets are arranged in the mica sheet bonding area in parallel to form a mica sheet layer. In the mica sheet bonding area 4, a limiting block 3 and a limiting strip 2 are respectively arranged in the area matched with each mica sheet. And a limiting groove 7 matched with the limiting block 3 is arranged on the mica sheet.
In this embodiment, each group of mica sheets includes two mica sheets arranged in parallel, the adjacent edges of the two mica sheets are respectively provided with a limiting groove 7, and the two limiting grooves are arranged in a staggered manner.
The plurality of groups of mica sheets are arranged in parallel and are distributed in the mica sheet bonding area. In the mica sheet bonding area, two sides of the area corresponding to each mica sheet are respectively provided with a limiting strip 2 and a limiting block 3. The limiting strips are abutted against the side edges of the mica sheet single sheets, and the limiting blocks correspond to the limiting grooves in the mica sheets, so that the limiting function is achieved, and the assembly and the positioning are facilitated.
The mica sheets are fixed in the mica sheet bonding region through the adhesive layer 8, and the upper surfaces of the mica sheets, the upper surfaces of the limiting blocks and the upper surfaces of the limiting strips are parallel and level.
In the manufacturing process, due to the complex shape of the upper shell, the position of a mica sheet bonding area and the positions of the limiting strips and the limiting blocks need to be determined in advance in the designated area of the upper shell, then the mica standard plate is cut into the corresponding product shape according to the actual size, then the single mica sheet is bonded to the bonding area on the inner surface of the upper shell through the adhesive layer, the thermal isolation layer of the upper shell is constructed, the stable and effective thermal runaway protection layer is formed, and the existing upper and lower shell assembling process is not influenced.
Preferably, the mica has a sheet structure and a thickness of about 0.8 mm. The inner side of the upper shell is used for ensuring the bonding performance of the product and ensuring local flatness, namely the bonding area is a flat surface, and the flatness is within 0.5 mm; in order to ensure that the relative position of the mica sheet and the composite material upper shell is limited, the inner side surface of the upper shell is provided with a limiting block integrated with the upper shell, and the height of the limiting block is about 1.5 mm. The height of the adhesive layer is about 0.6mm in order to secure the thickness of the adhesive layer of the adhesive.
Bonding a mica sheet with the upper shell of the composite material: firstly, placing an upper shell in a lower die of a bonding die, and placing a mica sheet in an upper die of the die; spraying an adhesive on the surface of the upper shell in the die; and finally, closing the die, attaching the shell in the die to the mica, applying pressure, maintaining the pressure for a certain time to cure the adhesive, and completing the bonding after the die is opened.
Claims (5)
1. A new energy battery pack thermal runaway protection structure comprises an upper shell of a battery pack, wherein reinforcing ribs are arranged on the upper shell, and the new energy battery pack thermal runaway protection structure is characterized by further comprising a mica sheet layer;
a mica sheet bonding area is arranged on the inner side surface of the upper shell, and a plurality of groups of mica sheets are arranged in the mica sheet bonding area in parallel to form a mica sheet layer;
in the mica sheet bonding area, a limiting block and a limiting strip are respectively arranged in the area matched with each mica sheet;
and the mica sheet is provided with a limiting groove matched with the limiting block.
2. The new energy battery pack thermal runaway protection structure of claim 1, wherein each set of mica sheets comprises two mica sheets arranged in parallel, and the adjacent edges of the two mica sheets are respectively provided with a limiting groove.
3. The new energy battery pack thermal runaway protection structure of claim 2, wherein multiple sets of mica sheets are arranged in parallel and are distributed over the mica sheet bonding area.
4. The new energy battery pack thermal runaway protection structure of claim 1, wherein in the mica sheet bonding area, a limit strip and a limit block are respectively arranged on two sides of the area corresponding to each mica sheet; the limiting strips are abutted against the side edges of the mica sheets, and the limiting blocks correspond to the limiting grooves in the mica sheets.
5. The new energy battery pack thermal runaway protection structure of claim 1, wherein mica sheets are respectively fixed in the mica sheet bonding region through an adhesive layer, and an upper surface of each mica sheet, an upper surface of each limiting block and an upper surface of each limiting strip are flush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021163061.7U CN212033111U (en) | 2020-06-22 | 2020-06-22 | New forms of energy battery package thermal runaway protective structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021163061.7U CN212033111U (en) | 2020-06-22 | 2020-06-22 | New forms of energy battery package thermal runaway protective structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212033111U true CN212033111U (en) | 2020-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021163061.7U Active CN212033111U (en) | 2020-06-22 | 2020-06-22 | New forms of energy battery package thermal runaway protective structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212033111U (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 |
-
2020
- 2020-06-22 CN CN202021163061.7U patent/CN212033111U/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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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 063000 China motor car city, Linyin South Road, Fengrun District, Tangshan City, Hebei Province Patentee after: Diren automobile technology (Tangshan) Co.,Ltd. Address before: 064000 China motor car city, South Linyin Road, Fengrun District, Tangshan City, Hebei Province Patentee before: CONTINENTAL STRUCTURAL PLASTICS, Inc. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 064000 China motor car city, South Linyin Road, Fengrun District, Tangshan City, Hebei Province Patentee after: Weiao Automotive Technology (Tangshan) Co.,Ltd. Country or region after: China Address before: 063000 China motor car city, Linyin South Road, Fengrun District, Tangshan City, Hebei Province Patentee before: Diren automobile technology (Tangshan) Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |