CN213878332U - Lithium ion battery module thermal runaway gas guide structure - Google Patents
Lithium ion battery module thermal runaway gas guide structure Download PDFInfo
- Publication number
- CN213878332U CN213878332U CN202022869835.4U CN202022869835U CN213878332U CN 213878332 U CN213878332 U CN 213878332U CN 202022869835 U CN202022869835 U CN 202022869835U CN 213878332 U CN213878332 U CN 213878332U
- Authority
- CN
- China
- Prior art keywords
- guide structure
- thermal runaway
- gas guide
- battery cell
- lithium ion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The utility model provides a lithium ion battery module thermal runaway gas guide structure, which comprises a plurality of electric core units and a module upper cover arranged above the electric core units, wherein one side of each electric core unit is provided with a gas guide structure, the gas guide structure covers the electric core units, and an exhaust passage is formed between the gas guide structure and the module upper cover; the battery cell unit comprises battery cell monomers, foam and heat insulation materials, wherein the foam or the heat insulation materials are arranged between every two adjacent battery cell monomers, and the foam and the heat insulation materials are arranged at intervals. Lithium ion battery module thermal runaway gas guide structure, can realize thermal runaway high temperature gas's directional eruption, can protect not out of control electric core, separation high temperature gas directly strikes electric core, effectively slows down thermal runaway and spreads speed.
Description
Technical Field
The utility model belongs to the technical field of the battery energy storage, especially, relate to a lithium ion battery module thermal runaway gas guide structure.
Background
Thermal runaway refers to the phenomenon of overheating, ignition and explosion caused by the rapid change of the self-temperature rise rate of a battery due to the heat release chain reaction of a single storage battery. Thermal runaway expansion refers to thermal runaway of a cell or cell unit within a battery pack or system and triggers thermal runaway of adjacent or other cells in the battery system. After thermal runaway occurs (taken from technical and safety conditions of electric motor coach), in order to protect the safety of the passenger compartment, flame should be suppressed, temperature should be controlled, propagation of thermal runaway to other battery cells should be delayed, and energy release amount and release speed should be reduced. The prior art mainly starts to control the high-temperature gas after thermal runaway from two aspects of a battery core and a battery box body. For example, an explosion-proof valve is designed on a battery shell of a cylindrical or square hard shell battery cell, and can be timely destroyed when the pressure is too high, so that the pressure in the battery is released, and the explosion of the battery in thermal runaway is prevented. The direction of the explosion-proof valve determines the burst direction of the thermal runaway high-temperature gas. Because the structure influences, soft-packaged electrical core does not have definite thermal runaway high temperature gas eruption direction, can only start from module or box. Even if the electric core has definite eruption direction, also should set up certain guide structure on module or box, the guide is gaseous to be discharged the battery package and is not heated other electric cores. In the prior art, mica sheets are mostly arranged between a module and an upper cover of a battery pack box body to prevent high-temperature gas from impacting and baking the upper cover, but the method cannot prevent the high-temperature gas from heating other battery cores. The other technical scheme is that an exhaust channel is designed to pass through the explosion-proof valve position of each battery cell, and the opening at the explosion-proof valve position is used for collecting exhausted gas. Due to uncertainty of a soft-package battery cell spraying opening, the scheme cannot be applied.
Disclosure of Invention
In view of this, the utility model aims at providing a lithium ion battery module thermal runaway gas guide structure to a directional eruption that can realize thermal runaway high temperature gas is provided, can protect not out of control electric core, and separation high temperature gas directly strikes electric core, effectively slows down the lithium ion battery module thermal runaway gas guide structure of thermal runaway spreading speed.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a thermal runaway gas guide structure of a lithium ion battery module comprises a plurality of battery cell units and a module upper cover arranged above the battery cell units, wherein one side of each battery cell unit is provided with a gas guide structure, the gas guide structure covers the battery cell units, and an exhaust channel is formed between the gas guide structure and the module upper cover; the battery cell unit comprises battery cell monomers, foam and heat insulation materials, wherein the foam or the heat insulation materials are arranged between every two adjacent battery cell monomers, and the foam and the heat insulation materials are arranged at intervals.
Further, the heat insulating material is aerogel.
Further, the heat insulation material is a mica sheet.
Further, the gas guide structure is made of a material which is resistant to high temperature and can deform after being subjected to gas pressure.
Further, the material of the gas guide structure is steel or copper, and the thickness range is 0.1mm-2 mm.
Furthermore, the cross section of the gas guide structure is of an L-shaped structure and covers the upper part of the battery cell monomer in the battery cell unit where the gas guide structure is located.
Compared with the prior art, lithium ion battery module thermal runaway gas guide structure have following advantage:
(1) lithium ion battery module thermal runaway gaseous guide structure, electric core thermal runaway erupts the back, strike gaseous guide structure, gaseous guide structure atress warp and forms directional eruption mouth, this directional eruption mouth is only opened when corresponding electric core thermal runaway, eruption mouth is the off-state when corresponding electric core monomer not thermal runaway, protect electric core, separation high temperature gas directly strikes electric core, fill thermal-insulated material between gaseous guide structure main part and electric core, the separation gives the heat of electric core through this structure transmission.
(2) Lithium ion battery module thermal runaway gas guide structure, simple structure, low in production cost realizes thermal runaway high temperature gas's directional eruption easily.
(3) Lithium ion battery module thermal runaway gas guide structure, gas guide structure takes place to warp under the gaseous effect of thermal runaway and opens to form directional exhaust passage through the direction of adjustment gas guide structure 4 under the restriction of module upper cover, can realize the change of eruption direction.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is an exploded view of a thermal runaway gas guiding structure of a lithium ion battery module according to an embodiment of the present invention;
fig. 2 is a side view of a thermal runaway gas guiding structure of a lithium ion battery module according to an embodiment of the invention;
fig. 3 is a first side view of a thermal runaway unidirectional burst state of a cell according to an embodiment of the present invention;
fig. 4 is a second side view of a thermal runaway unidirectional burst state of a battery cell according to an embodiment of the present invention;
fig. 5 is a side view of a thermal runaway reversal burst state of a cell according to an embodiment of the present invention.
Schematic representation.
Description of reference numerals:
1-a cell monomer; 2-soaking cotton; 3-heat insulating material; 4-a gas guiding structure; 5-module upper cover; arrow-gas discharge direction.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
A thermal runaway gas guide structure of a lithium ion battery module is shown in figures 1 to 5 and comprises a plurality of battery cell units and a module upper cover 5 arranged above the battery cell units, wherein one side of each battery cell unit is provided with a gas guide structure 4, the gas guide structure 4 covers the battery cell units, and an exhaust channel is formed between the gas guide structure 4 and the module upper cover 5; the electric core unit comprises electric core monomers 1, foam 2, heat insulation materials 3, a gas guide structure 4 and a module upper cover 5, wherein the foam 2 or the heat insulation materials 3 are arranged between every two adjacent electric core monomers 1, and the foam 2 and the heat insulation materials 3 are arranged at intervals.
The number of the battery cell monomers 1 is variable and is changed according to design requirements.
The foam 2 is used for absorbing the expansion of the battery core monomer 1, and can be added at intervals or not added in the scheme.
The heat insulating material 3 can be selected from aerogel, mica sheet and the like.
The gas guide structure 4 is made of a material which is high temperature resistant and can deform after being subjected to gas pressure. Such as: steel, copper, etc., with a thickness of between 0.1mm and 2 mm. The metal plate is bent to form an inverted L-shaped structure, and the inverted L-shaped structure covers the upper part of the battery cell monomer 1.
The module top cover 5 may be used in this patent to limit the amount of deformation of the gas guiding structure 4. The material of the structure should be a material that is resistant to thermal runaway temperatures, such as steel, so as not to melt under the heat of the high temperature gas burst, causing the gas guiding structure 4 to deform too much and lose its guiding effect.
The first embodiment is as follows:
as shown in fig. 3 and 4, when the cell unit 1 is thermally out of control and the gas is discharged from the upper part, the gas guide structure 4 is deformed to form an exhaust channel under the influence of the pressure of the burst gas, so that the directional burst of the gas is realized. The gas guide structure 4 is limited by the module upper cover 5 and can be opened to a specified position at most. After the directional burst of the high-temperature gas, the high-temperature gas flows through the other gas guiding structures 4, which causes the temperature of the gas guiding structures 4 to rise. The heat insulating material 3 can prevent the high temperature of the gas guide structure 4 from being transferred to the battery cell unit 1 without thermal runaway.
In addition, the high temperature gas is restricted by the guide structure 4 and does not flow to the right as shown in fig. 4. Therefore, the gas cannot flow reversely with the bending direction of the gas guide structure 4, so that other gas guide structures 4 are not influenced by reverse airflow to be opened, and the right battery cell monomer 1 can be effectively protected.
According to the technical scheme, the battery cell unit forms a module through the fixation of the frame and other auxiliary mechanisms.
The second embodiment is as follows:
by adjusting the direction of the gas guiding structure 4, as shown in fig. 5, a change of the firing direction can be achieved.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a lithium ion battery module thermal runaway gas guide structure which characterized in that: the battery cell module comprises a plurality of battery cell units and a module upper cover arranged above the battery cell units, wherein one side of each battery cell unit is provided with a gas guide structure, the gas guide structure covers the battery cell units, and an exhaust channel is formed between the gas guide structure and the module upper cover; the battery cell unit comprises battery cell monomers, foam and heat insulation materials, wherein the foam or the heat insulation materials are arranged between every two adjacent battery cell monomers, and the foam and the heat insulation materials are arranged at intervals.
2. The lithium ion battery module thermal runaway gas guiding structure of claim 1, wherein: the heat insulating material is aerogel.
3. The lithium ion battery module thermal runaway gas guiding structure of claim 1, wherein: the heat insulating material is a mica sheet.
4. The lithium ion battery module thermal runaway gas guiding structure of claim 1, wherein: the gas guide structure is made of a material which is resistant to high temperature and can deform after being subjected to gas pressure.
5. The lithium ion battery module thermal runaway gas guiding structure of claim 4, wherein: the material of the gas guide structure is steel or copper, and the thickness range is 0.1mm-2 mm.
6. The lithium ion battery module thermal runaway gas guiding structure of claim 1, wherein: the cross section of the gas guide structure is of an L-shaped structure and covers the upper parts of the battery cell monomers in the battery cell units where the gas guide structure is located.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022869835.4U CN213878332U (en) | 2020-12-03 | 2020-12-03 | Lithium ion battery module thermal runaway gas guide structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022869835.4U CN213878332U (en) | 2020-12-03 | 2020-12-03 | Lithium ion battery module thermal runaway gas guide structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213878332U true CN213878332U (en) | 2021-08-03 |
Family
ID=77041268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022869835.4U Active CN213878332U (en) | 2020-12-03 | 2020-12-03 | Lithium ion battery module thermal runaway gas guide structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213878332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114497873A (en) * | 2022-01-30 | 2022-05-13 | 孚能科技(赣州)股份有限公司 | Heat insulation composite assembly, preparation method thereof, battery module and battery pack |
-
2020
- 2020-12-03 CN CN202022869835.4U patent/CN213878332U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114497873A (en) * | 2022-01-30 | 2022-05-13 | 孚能科技(赣州)股份有限公司 | Heat insulation composite assembly, preparation method thereof, battery module and battery pack |
| CN114497873B (en) * | 2022-01-30 | 2023-09-08 | 孚能科技(赣州)股份有限公司 | Heat insulation composite assembly, preparation method thereof, battery module and battery pack |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3706190B1 (en) | Battery module and battery pack | |
| CN110444835B (en) | Battery pack and vehicle | |
| EP3890057A1 (en) | Battery pack | |
| EP3641013B1 (en) | Protective assembly, sealing cover, and container | |
| CN207409556U (en) | Battery modules | |
| CN112448078A (en) | Energy storage module | |
| CN111769222B (en) | Battery module and battery pack | |
| US20230187774A1 (en) | Traction battery comprising a guide means for a fluid volume flow, and motor vehicle | |
| EP3790070A1 (en) | Battery pack, method for manufacturing same, and vehicle | |
| JPWO2020039722A1 (en) | Battery module | |
| CN107093686B (en) | Battery pack and vehicle | |
| CN113966565B (en) | Battery pack and traffic equipment | |
| CN208433489U (en) | A kind of electric automobile battery box and its heat dissipation, heating system | |
| CN213878332U (en) | Lithium ion battery module thermal runaway gas guide structure | |
| CN211125725U (en) | Thermal protection system for power battery | |
| EP3731301B1 (en) | Energy storage device | |
| CN113782910A (en) | Heat flow discharge device and method of power battery pack, power battery pack and vehicle | |
| CN211017155U (en) | Battery cell module, battery pack and vehicle | |
| KR20230112439A (en) | Battery Module and Battery Pack Having the same | |
| CN219067061U (en) | Battery pack | |
| CN212366138U (en) | Power battery package and electric automobile | |
| CN215527825U (en) | Battery module and battery pack | |
| CN217485659U (en) | Battery shell, battery monomer, battery and consumer | |
| CN217562698U (en) | High-safety soft package battery module and electric vehicle | |
| WO2023050078A1 (en) | Battery, electrical apparatus, method and apparatus for preparing battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |