CN113670458A - Battery thermal runaway experiment clamp - Google Patents
Battery thermal runaway experiment clamp Download PDFInfo
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- CN113670458A CN113670458A CN202110962377.5A CN202110962377A CN113670458A CN 113670458 A CN113670458 A CN 113670458A CN 202110962377 A CN202110962377 A CN 202110962377A CN 113670458 A CN113670458 A CN 113670458A
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- battery
- thermal runaway
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- clamping plates
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- 238000002474 experimental method Methods 0.000 title claims abstract description 30
- 238000004080 punching Methods 0.000 claims abstract description 6
- 239000008266 hair spray Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 206010037844 rash Diseases 0.000 abstract description 18
- 238000004088 simulation Methods 0.000 abstract description 12
- 238000012795 verification Methods 0.000 abstract description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052744 lithium Inorganic materials 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000001467 acupuncture Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000004964 aerogel Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a thermal runaway experiment clamp for a battery, which relates to the technical field of lithium batteries and comprises a clamping plate, a needle punching hole, a collecting platform, a cover plate and a second temperature sensor; the inner sides of the two clamping plates are opposite; one of the clamping plates is provided with a needle-punched hole which penetrates between the outer side surface and the inner side surface of the clamping plate; the top of each clamping plate is fixedly connected with a collecting platform, and the two collecting platforms respectively extend towards the outer sides of the two clamping plates; the material and thickness of the cover plate simulate the box cover of the battery pack, and the cover plate is positioned above the collecting platform and has a gap with the collecting platform; the second temperature sensors are respectively arranged on the hair spray areas on the top surfaces of the two collecting platforms and the bottom surface of the cover plate. The invention has the advantages that: the device can collect eruptions generated after thermal runaway of the battery core and the temperature of the eruptions so as to carry out simulation model verification.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a thermal runaway experiment clamp for a battery.
Background
The current development of new energy power batteries is trending, lithium batteries move towards higher energy density, along with higher and higher safety risks, researches for improving safety of the batteries are urgently needed to be established, the key problem is the thermal runaway research of the power batteries, and an experimental clamp capable of fixing, heating and needling a battery core and collecting eruptions and temperatures of the eruptions after the thermal runaway of the battery core is needed to research internal mechanisms and external expressions of the thermal runaway of the power batteries.
Patent CN212337945U discloses a battery thermal runaway testing device, which includes a container, a tooling, a needling base and a power mechanism, wherein the tooling is arranged in the container and used for fixing a plurality of batteries to be tested; a steel needle is fixedly arranged on the acupuncture base; the power mechanism is used for pushing the needling base; the side wall of the container is provided with a through hole matched with the steel needle. The shortcomings of the existing battery thermal runaway testing device include: the eruption and the temperature of the eruption after the thermal runaway of the battery core cannot be collected so as to carry out simulation model verification; the thermal runaway experiment of the battery cell or the module under various working conditions cannot be realized; and the size of different battery cores or modules cannot be adapted.
Disclosure of Invention
The invention aims to provide a battery thermal runaway experiment clamp which can collect eruptions generated after thermal runaway of a battery core and the temperature of the eruptions so as to perform simulation model verification.
The invention solves the technical problems through the following technical means: the battery thermal runaway experiment clamp comprises a clamping plate (1), a needle punching hole (2), a collecting platform (5), a cover plate (6) and a second temperature sensor (10); the inner sides of the two clamping plates (1) are opposite; one clamping plate (1) is provided with a needle punched hole (2), and the needle punched hole (2) penetrates between the outer side surface and the inner side surface of the clamping plate (1); the top of each clamping plate (1) is fixedly connected with a collecting platform (5), and the two collecting platforms (5) respectively extend towards the outer sides of the two clamping plates (1); the cover plate (6) is made of a material and has a thickness simulating a box cover of the battery pack, and the cover plate (6) is positioned above the collecting platform (5) and has a gap with the collecting platform (5); a plurality of second temperature sensors (10) are respectively arranged on the hair spray areas on the top surfaces of the two collecting platforms (5) and the bottom surface of the cover plate (6). Fix electric core or module between two splint, utilize the steel needle to pass the acupuncture hole and can carry out the acupuncture experiment of thermal runaway, the case lid of apron simulation battery package, the eruption thing of electric core can be collected to two collection platforms, the temperature of eruption thing can be collected to the second temperature sensor, through the composition and the temperature of analysis eruption thing, can know the weak link of case lid when the battery package inside electric core takes place the thermal runaway, realize simulation case lid convection heat transfer and mark, and can carry out multiphase flow simulation verification and high-speed hot-fluid simulation technical verification.
As an optimized technical scheme, the battery thermal runaway experiment clamp further comprises a heating mechanism (8) and a first temperature sensor (9), wherein the heating mechanism (8) and the first temperature sensor (9) are both installed between the two clamping plates (1). Heating mechanism and first temperature sensor can heat electric core or module and control heating temperature, realize the thermal runaway experiment of electric core or module under the multiple operating mode.
As an optimized technical scheme, the battery thermal runaway experiment clamp further comprises a third temperature sensor (11), and the third temperature sensor (11) is installed on the top surface of the cover plate (6). The third temperature sensor can collect the temperature of the outer side of the cover plate, and the heat insulation performance of the battery pack box cover and the heat insulation layer is verified.
As an optimized technical scheme, heat insulation layers are respectively arranged on the inner sides of the two clamping plates (1), the top surface of the collecting platform (5) and the bottom surface of the cover plate (6).
As an optimized technical scheme, the clamping plate (1) and the two collecting platforms (5) are fixedly connected through bolts respectively.
As an optimized technical scheme, the distance between the two clamping plates (1) can be adjusted. Through adjusting the distance between two splint, can adapt to the size of different electric cores or modules.
As an optimized technical scheme, the battery thermal runaway experiment clamp further comprises a screw (3) and a nut (4); the screw rods (3) are divided into two groups and are respectively positioned at the edges of two sides close to the clamping plates (1), each group comprises at least one screw rod (3), and each screw rod (3) penetrates through the two clamping plates (1) and is in sliding fit with the two clamping plates (1); the screw rods (3) are respectively and fixedly connected with nuts (4) on the outer sides of the two clamping plates (1).
As an optimized technical scheme, two collecting platforms (5) are respectively provided with a first connecting hole (51), the first connecting holes (51) are waist-shaped holes, and the length direction of the first connecting holes (51) is perpendicular to the clamping plate (1); the cover plate (6) is provided with a second connecting hole (61), and the two collecting platforms (5) are fixedly connected with the cover plate (6) through bolts penetrating through the first connecting hole (51) and the second connecting hole (61).
As an optimized technical scheme, the battery thermal runaway experiment clamp further comprises a sleeve (7), and the sleeve (7) is sleeved on a bolt outer ring between the collecting platform (5) and the cover plate (6). The distance between the collection platform and the cover plate can be positioned by the sleeve.
As an optimized technical scheme, the battery thermal runaway experiment clamp further comprises a gasket, wherein the gasket is sleeved on an outer ring of the bolt between the collection platform (5) and the cover plate (6), and the gasket and the sleeve (7) are arranged in the axial direction of the bolt sleeved in the middle. The distance between the collecting platform and the cover plate is convenient to adjust.
The invention has the advantages that:
1. the device can collect eruption and temperature of the eruption after thermal runaway of the battery cell, realize calibration of convection heat transfer of the simulation box cover, and can perform multiphase flow simulation verification and high-speed thermal fluid simulation technology verification.
2. Can heat electric core or module and control heating temperature, realize the thermal runaway experiment of electric core or module under the multiple operating mode.
3. The temperature of the outer side of the cover plate can be collected, and the verification of the heat insulation performance of the battery pack box cover and the heat insulation layer is achieved.
4. Through adjusting the distance between two splint, can adapt to the size of different electric cores or modules.
5. Simple structure, reasonable in design when guaranteeing to reach the experiment purpose, furthest has simplified the experimental device, has practiced thrift the experiment cost.
Drawings
Fig. 1 is a schematic front view illustrating a battery cell mounted on a thermal runaway experimental fixture of a battery according to an embodiment of the invention.
FIG. 2 is a schematic right view of a thermal runaway experimental fixture for a battery according to an embodiment of the invention.
FIG. 3 is an axial view of a thermal runaway experimental fixture for a battery according to an embodiment of the invention.
FIG. 4 is a schematic top view of a collection platform according to an embodiment of the present invention.
FIG. 5 is a schematic top view of a cover plate according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 3, the thermal runaway experiment clamp for the battery comprises a clamping plate 1, a needle punching hole 2, a screw rod 3, a nut 4, a collecting platform 5, a cover plate 6, a sleeve 7, a heating mechanism 8, a first temperature sensor 9, a second temperature sensor 10 and a third temperature sensor 11.
The clamping plates 1 are made of steel plates, and the inner sides of the two clamping plates 1 are opposite; the inner sides of the two clamping plates 1 are respectively provided with a heat insulation layer (not shown), and the heat insulation layers are made of 2mm aerogel; one of the clamping plates 1 is provided with a needle hole 2, and the needle hole 2 penetrates between the outer side surface and the inner side surface of the clamping plate 1.
The screws 3 are divided into two groups and are respectively positioned at the edges of two sides close to the clamping plates 1, each group comprises two screws 3, and each screw 3 penetrates through the two clamping plates 1 and is in sliding fit with the two clamping plates 1; the parts of the screw rods 3, which are positioned at the outer sides of the two clamping plates 1, are respectively and fixedly connected with nuts 4; the distance between the two clamping plates 1 can be adjusted by means of a threaded rod 3 and a nut 4.
The collecting platforms 5 are made of steel plates, the top of each clamping plate 1 is fixedly connected with one collecting platform 5, and the clamping plates 1 and the two collecting platforms 5 are fixedly connected through a plurality of bolts respectively; the distance between the two collecting platforms 5 is equal to the distance between the two clamping plates 1, and the two collecting platforms 5 respectively extend towards the outer sides of the two clamping plates 1; the top surface of the collecting platform 5 is provided with a heat insulation layer (not shown); referring to fig. 4, the two collecting platforms 5 are respectively provided with a first connecting hole 51, and the front side and the rear side of each collecting platform 5 are respectively provided with one first connecting hole 51; the first connection hole 51 is a kidney-shaped hole, and the length direction of the first connection hole 51 is perpendicular to the splint 1.
The cover plate 6 is made of a steel plate, and the material and the thickness of the cover plate 6 simulate the box cover of the battery pack; the cover plate 6 is positioned above the collecting platform 5 and has a gap with the collecting platform 5; the bottom surface of the cover plate 6 is provided with a heat insulation layer (not shown); referring to fig. 5, the four corners of the cover plate 6 are respectively provided with second connection holes 61, and the two collecting platforms 5 are respectively fixedly connected to the cover plate 6 by bolts passing through the first connection holes 51 and the second connection holes 61.
The sleeve 7 is sleeved on the outer ring of the bolt between the collecting platform 5 and the cover plate 6; the battery thermal runaway experiment clamp further comprises a gasket (not shown), wherein the gasket is sleeved on an outer ring of the bolt between the collecting platform 5 and the cover plate 6, and the gasket and the sleeve 7 are arranged along the axial direction of the bolt sleeved in the middle.
The heating mechanism 8 adopts a heating film, the heating mechanism 8 and the first temperature sensor 9 are both arranged between the two clamping plates 1, and the heating mechanism 8 and the first temperature sensor 9 are respectively positioned at two sides of the battery cell 12 arranged between the two clamping plates 1; a plurality of second temperature sensors 10 are respectively installed on the hair spray areas on the top surfaces of the two collecting platforms 5 and the bottom surface of the cover plate 6; a plurality of third temperature sensors 11 are installed on the top surface of the cover plate 6.
The working principle of the thermal runaway experimental clamp for the battery is as follows: the distance between the two clamping plates 1 can be adjusted to adapt to the sizes of different battery cores or modules; placing the electric core 12 between the two clamping plates 1, screwing the nut 4 to fix the electric core 12, and penetrating the needle punching hole 2 by using a steel needle to perform a needle punching thermal runaway experiment; the heating mechanism 8 and the first temperature sensor 9 can heat the electric core 12 and control the heating temperature, so that a thermal runaway experiment of the electric core 12 under various working conditions is realized; the cover plate 6 simulates a box cover of a battery pack, eruptions of the battery cell 12 are upwards sprayed out from between the two collecting platforms 5 and fall back to the two collecting platforms 5 after contacting the cover plate 6, the two collecting platforms 5 can collect the eruptions of the battery cell 12, the second temperature sensor 10 can collect the temperature of the eruptions, and by analyzing the components and the temperature of the eruptions, weak links of the box cover can be known when the battery cell in the battery pack is out of control due to heat, so that the convection heat exchange calibration of the simulated box cover is realized, and multiphase flow simulation verification and high-speed thermal fluid simulation technology verification can be carried out; the third temperature sensor 11 can collect the temperature outside the cover plate 6, so that the heat insulation performance of the battery pack box cover and the heat insulation layer can be verified; the battery thermal runaway experiment clamp solves the problems of fixing, heating, temperature acquisition, collection of eruptions and the like of the electric core of the thermal runaway experiment of the power battery, and the thermal runaway experiment is orderly promoted.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a battery thermal runaway experiment anchor clamps which characterized in that: comprises a clamping plate (1), a needle punching hole (2), a collecting platform (5), a cover plate (6) and a second temperature sensor (10); the inner sides of the two clamping plates (1) are opposite; one clamping plate (1) is provided with a needle punched hole (2), and the needle punched hole (2) penetrates between the outer side surface and the inner side surface of the clamping plate (1); the top of each clamping plate (1) is fixedly connected with a collecting platform (5), and the two collecting platforms (5) respectively extend towards the outer sides of the two clamping plates (1); the cover plate (6) is made of a material and has a thickness simulating a box cover of the battery pack, and the cover plate (6) is positioned above the collecting platform (5) and has a gap with the collecting platform (5); a plurality of second temperature sensors (10) are respectively arranged on the hair spray areas on the top surfaces of the two collecting platforms (5) and the bottom surface of the cover plate (6).
2. The experimental fixture for thermal runaway of a battery as claimed in claim 1, wherein: the battery thermal runaway experiment clamp further comprises a heating mechanism (8) and a first temperature sensor (9), wherein the heating mechanism (8) and the first temperature sensor (9) are both installed between the two clamping plates (1).
3. The experimental fixture for thermal runaway of a battery as claimed in claim 1, wherein: the battery thermal runaway experiment clamp further comprises a third temperature sensor (11), wherein the third temperature sensor (11) is installed on the top surface of the cover plate (6).
4. The experimental fixture for thermal runaway of a battery as claimed in claim 1, wherein: the inner sides of the two clamping plates (1), the top surface of the collecting platform (5) and the bottom surface of the cover plate (6) are respectively provided with a heat insulation layer.
5. The experimental fixture for thermal runaway of a battery as claimed in claim 1, wherein: the clamping plate (1) is fixedly connected with the two collecting platforms (5) through bolts respectively.
6. The experimental fixture for thermal runaway of a battery as claimed in claim 1, wherein: the distance between the two clamping plates (1) can be adjusted.
7. The experimental fixture for thermal runaway of a battery as claimed in claim 6, wherein: the battery thermal runaway experiment clamp also comprises a screw rod (3) and a nut (4); the screw rods (3) are divided into two groups and are respectively positioned at the edges of two sides close to the clamping plates (1), each group comprises at least one screw rod (3), and each screw rod (3) penetrates through the two clamping plates (1) and is in sliding fit with the two clamping plates (1); the screw rods (3) are respectively and fixedly connected with nuts (4) on the outer sides of the two clamping plates (1).
8. The experimental fixture for thermal runaway of a battery as claimed in claim 6, wherein: the two collecting platforms (5) are respectively provided with a first connecting hole (51), the first connecting holes (51) are waist-shaped holes, and the length direction of the first connecting holes (51) is vertical to the clamping plate (1); the cover plate (6) is provided with a second connecting hole (61), and the two collecting platforms (5) are fixedly connected with the cover plate (6) through bolts penetrating through the first connecting hole (51) and the second connecting hole (61).
9. The experimental fixture for thermal runaway of a battery as claimed in claim 8, wherein: the battery thermal runaway experiment clamp further comprises a sleeve (7), wherein the sleeve (7) is sleeved on a bolt outer ring between the collecting platform (5) and the cover plate (6).
10. The experimental fixture for thermal runaway of a battery as claimed in claim 9, wherein: the battery thermal runaway experiment clamp further comprises a gasket, wherein the gasket is sleeved on a bolt outer ring between the collection platform (5) and the cover plate (6), and the gasket and the sleeve (7) are arranged in the axial direction of a middle bolt in a sleeved mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110962377.5A CN113670458B (en) | 2021-08-20 | 2021-08-20 | Battery thermal runaway experimental clamp |
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| CN202110962377.5A CN113670458B (en) | 2021-08-20 | 2021-08-20 | Battery thermal runaway experimental clamp |
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| CN113670458B CN113670458B (en) | 2024-05-14 |
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| Publication number | Publication date |
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| CN113670458B (en) | 2024-05-14 |
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