CN113670458B - Battery thermal runaway experimental clamp - Google Patents
Battery thermal runaway experimental clamp Download PDFInfo
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- CN113670458B CN113670458B CN202110962377.5A CN202110962377A CN113670458B CN 113670458 B CN113670458 B CN 113670458B CN 202110962377 A CN202110962377 A CN 202110962377A CN 113670458 B CN113670458 B CN 113670458B
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- cover plate
- thermal runaway
- battery thermal
- clamping plates
- collecting
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- 239000000463 material Substances 0.000 claims abstract description 4
- 238000002474 experimental method Methods 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000012360 testing method Methods 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 14
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004088 simulation Methods 0.000 abstract description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052744 lithium Inorganic materials 0.000 abstract description 4
- 206010037844 rash Diseases 0.000 description 14
- 238000012795 verification Methods 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000011160 research 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a battery thermal runaway experimental clamp, which relates to the technical field of lithium batteries and comprises a clamping plate, a needling 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 needling hole which penetrates through the space 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 extend to the outer sides of the two clamping plates respectively; the material and the thickness of the cover plate simulate the cover plate of the battery pack, and the cover plate is positioned above the collecting platform and a gap is reserved between the cover plate and the collecting platform; the plurality of second temperature sensors are respectively arranged on the top surfaces of the two collecting platforms and the eruption area of the bottom surface of the cover plate. The invention has the advantages that: the temperature of the eruption and the eruption after the thermal runaway of the battery core can be collected to verify the simulation model.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a battery thermal runaway experimental clamp.
Background
At present, the development of new energy power batteries is in trend of large potential, lithium batteries move forward to a higher energy density direction, and along with higher and higher safety risks, researches for improving the safety of the lithium batteries are urgently needed, wherein a key problem is research on thermal runaway of the power batteries, and an experimental fixture capable of fixing, heating and needling electric cores and collecting the temperature of the electric cores after the thermal runaway and the temperature of the electric cores are needed for researching the internal mechanism and external appearance of the thermal runaway of the power batteries.
Patent CN212337945U discloses a battery thermal runaway testing device, which comprises a container, a tool, a needling base and a power mechanism, wherein the tool is arranged in the container and is used for fixing a plurality of batteries to be tested; a steel needle is fixedly arranged on the needling 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. Drawbacks of the existing battery thermal runaway testing device include: the thermal runaway of the current core and the temperature of the spray can not be collected so as to carry out simulation model verification; thermal runaway experiments of the battery cells or the modules under various working conditions cannot be realized; and cannot adapt to the sizes of different battery cells or modules.
Disclosure of Invention
The invention aims to provide a battery thermal runaway experimental clamp capable of collecting a eruption after thermal runaway of a battery core and the temperature of the eruption so as to verify a simulation model.
The invention solves the technical problems by the following technical means: the battery thermal runaway experiment clamp comprises a clamping plate (1), a needling 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; a needling hole (2) is formed in one clamping plate (1), and the needling hole (2) penetrates through the space 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) extend to the outer sides of the two clamping plates (1) respectively; the cover plate (6) is made of materials and has a thickness similar to the case cover of the battery pack, and the cover plate (6) is positioned above the collecting platform (5) and a gap is reserved between the cover plate and the collecting platform (5); a plurality of second temperature sensors (10) are respectively arranged on the top surfaces of the two collecting platforms (5) and the eruption area of the bottom surface of the cover plate (6). The battery cell or the module is fixed between the two clamping plates, a steel needle is utilized to penetrate through a needle hole to perform a needle thermal runaway experiment, the cover plate simulates a box cover of the battery pack, two collecting platforms can collect eruptions of the battery cell, a second temperature sensor can collect the temperature of the eruptions, the weak link of the box cover when the battery cell inside the battery pack is in thermal runaway can be known through analyzing the composition and the temperature of the eruptions, the simulated box cover convective heat exchange calibration is realized, and multiphase flow simulation verification and high-speed thermal fluid simulation technology verification can be performed.
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 arranged between the two clamping plates (1). The heating mechanism and the first temperature sensor can heat the battery cell or the module and control the heating temperature, so that the thermal runaway experiment of the battery cell or the module under various working conditions is realized.
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 outside the cover plate, and the heat insulation performance verification of the battery pack cover and the heat insulation layer is realized.
As an optimized technical scheme, 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 heat insulation layers.
As an optimized technical scheme, the clamping plate (1) is fixedly connected with the two collecting platforms (5) through bolts respectively.
As an optimized technical scheme, the distance between the two clamping plates (1) can be adjusted. The size of different battery cells or modules can be adapted by adjusting the distance between the two clamping plates.
As an optimized technical scheme, the battery thermal runaway experiment clamp also comprises a screw (3) and a nut (4); the screws (3) are divided into two groups, are respectively positioned near the edges of two sides of the clamping plates (1), each group comprises at least one screw (3), and each screw (3) penetrates through the two clamping plates (1) and is in sliding fit with the two clamping plates (1); nuts (4) are fixedly connected to the parts of the screws (3) located on the outer sides of the two clamping plates (1) respectively.
As an optimized technical scheme, first connecting holes (51) are respectively formed in the two collecting platforms (5), 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 respectively 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 the outer ring of the bolt between the collecting platform (5) and the cover plate (6). The distance between the collecting platform and the cover plate can be positioned through the sleeve.
As the optimized technical scheme, the battery thermal runaway experiment clamp further comprises a gasket, wherein the gasket is sleeved on the outer ring of the bolt between the collecting platform (5) and the cover plate (6), and the gasket and the sleeve (7) are axially arranged along the middle bolt. The distance between the collection platform and the cover plate is convenient to adjust.
The invention has the advantages that:
1. the device can collect the eruption and the temperature of the eruption after the electric core is out of control, realizes the simulated case cover convection heat exchange calibration, and can perform multiphase flow simulation verification and high-speed hot fluid simulation technology verification.
2. The electric core or the module can be heated and the heating temperature is controlled, so that the thermal runaway experiment of the electric core or the module under various working conditions is realized.
3. The temperature outside the cover plate can be collected, and the heat insulation performance verification of the battery pack cover and the heat insulation layer is realized.
4. The size of different battery cells or modules can be adapted by adjusting the distance between the two clamping plates.
5. Simple structure, reasonable in design has simplified experimental equipment to the maximum extent when guaranteeing to reach experimental objective, has practiced thrift the experiment cost.
Drawings
Fig. 1 is a schematic front view of a battery thermal runaway test fixture with a battery cell mounted thereon according to an embodiment of the present invention.
Fig. 2 is a right side view schematically showing a thermal runaway test fixture for a battery according to an embodiment of the present invention.
Fig. 3 is an isometric view of a battery thermal runaway test fixture according to an embodiment of the invention.
FIG. 4 is a schematic top view of a collection platform according to an embodiment of the invention.
Fig. 5 is a schematic top view of a cover plate according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 3, the battery thermal runaway test fixture comprises a clamping plate 1, a needling hole 2, a screw 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 adopt aerogel with the thickness of 2 mm; one of the clamping plates 1 is provided with a needling hole 2, and the needling 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, are respectively positioned near the edges of two sides of 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; nuts 4 are fixedly connected to the parts of the screws 3, which are positioned outside the two clamping plates 1 respectively; the distance between the two clamping plates 1 can be adjusted by the screw 3 and the 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 are respectively and fixedly connected with the two collecting platforms 5 through a plurality of bolts; 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 extend to the outer sides of the two clamping plates 1 respectively; the top surface of the collecting platform 5 is provided with a heat insulation layer (not shown); referring to fig. 4, two collecting platforms 5 are respectively provided with a first connecting hole 51, and each collecting platform 5 is provided with a first connecting hole 51 on the front and rear sides thereof; the first connecting hole 51 is a waist-shaped hole, and the length direction of the first connecting hole 51 is perpendicular to the clamping plate 1.
The cover plate 6 is made of a steel plate, and the material and the thickness of the cover plate 6 simulate the cover of the battery pack; the cover plate 6 is positioned above the collecting platform 5 and a gap is reserved between the cover plate and 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, second connection holes 61 are respectively provided at four corners of the cover plate 6, and the two collection platforms 5 are fixedly connected with the cover plate 6 by bolts passing through the first connection holes 51 and the second connection holes 61, respectively.
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 test fixture also comprises a gasket (not shown), wherein the gasket is sleeved on the outer ring of the bolt between the collecting platform 5 and the cover plate 6, and the gasket and the sleeve 7 are axially arranged along the middle bolt.
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 electric core 12 arranged between the two clamping plates 1; a plurality of second temperature sensors 10 are respectively installed at the top surfaces of the two collecting platforms 5 and the eruption area of the bottom surface of the cover plate 6; a plurality of third temperature sensors 11 are mounted on the top surface of the cover plate 6.
The working principle of the battery thermal runaway experimental clamp is as follows: by adjusting the distance between the two clamping plates 1, the size of different battery cores or modules can be adapted; the battery cell 12 is placed between the two clamping plates 1, the nut 4 is screwed to fix the battery cell 12, and a steel needle is used for penetrating through the needle hole 2 to perform a needle thermal runaway experiment; the heating mechanism 8 and the first temperature sensor 9 can heat the battery cell 12 and control the heating temperature, so that a thermal runaway experiment of the battery cell 12 under various working conditions is realized; the cover plate 6 simulates a box cover of the battery pack, the eruption of the battery core 12 is ejected upwards from between the two collecting platforms 5, falls back to the two collecting platforms 5 after contacting the cover plate 6, the two collecting platforms 5 can collect the eruption of the battery core 12, the second temperature sensor 10 can collect the temperature of the eruption, and the weak link of the box cover when the battery core in the battery pack is out of control due to the analysis of the composition and the temperature of the eruption can be known, so that the simulated box cover convective heat exchange calibration is realized, and multiphase flow simulation verification and high-speed hot fluid simulation technology verification can be performed; the third temperature sensor 11 can collect the temperature outside the cover plate 6, so that the heat insulation performance verification of the battery pack cover and the heat insulation layer is realized; the battery thermal runaway experiment clamp solves the problems of fixing, heating, temperature acquisition, eruption collection and the like of a battery core of a thermal runaway experiment of a power battery, and enables the thermal runaway experiment to be orderly propelled.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A battery thermal runaway experimental clamp is characterized in that: comprises a clamping plate (1), a needling hole (2), a collecting platform (5), a cover plate (6), a second temperature sensor (10) and a third temperature sensor (11); the inner sides of the two clamping plates (1) are opposite; a needling hole (2) is formed in one clamping plate (1), and the needling hole (2) penetrates through the space 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) extend to the outer sides of the two clamping plates (1) respectively; the cover plate (6) is made of materials and has a thickness similar to the case cover of the battery pack, and the cover plate (6) is positioned above the collecting platform (5) and a gap is reserved between the cover plate and the collecting platform (5); a plurality of second temperature sensors (10) are respectively arranged on the top surfaces of the two collecting platforms (5) and the eruption area of the bottom surface of the cover plate (6); the third temperature sensor (11) is installed on the top surface of the cover plate (6), and the third temperature sensor (11) can collect the temperature of the outer side of the cover plate (6) to verify the heat insulation performance of the battery pack cover and the heat insulation layer.
2. The battery thermal runaway test fixture of 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 arranged between the two clamping plates (1).
3. The battery thermal runaway test fixture of 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.
4. The battery thermal runaway test fixture of claim 1, wherein: the clamping plate (1) is fixedly connected with the two collecting platforms (5) through bolts respectively.
5. The battery thermal runaway test fixture of claim 1, wherein: the distance between the two clamping plates (1) can be adjusted.
6. The battery thermal runaway test fixture of claim 5, wherein: the battery thermal runaway experiment clamp also comprises a screw (3) and a nut (4); the screws (3) are divided into two groups, are respectively positioned near the edges of two sides of the clamping plates (1), each group comprises at least one screw (3), and each screw (3) penetrates through the two clamping plates (1) and is in sliding fit with the two clamping plates (1); nuts (4) are fixedly connected to the parts of the screws (3) located on the outer sides of the two clamping plates (1) respectively.
7. The battery thermal runaway test fixture of claim 5, 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 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 respectively fixedly connected with the cover plate (6) through bolts penetrating through the first connecting hole (51) and the second connecting hole (61).
8. The battery thermal runaway test fixture of claim 7, wherein: the battery thermal runaway experiment clamp further comprises a sleeve (7), and the sleeve (7) is sleeved on the outer ring of the bolt between the collecting platform (5) and the cover plate (6).
9. The battery thermal runaway test fixture of claim 8, wherein: the battery thermal runaway experiment clamp further comprises a gasket, wherein the gasket is sleeved on the outer ring of the bolt between the collecting platform (5) and the cover plate (6), and the gasket and the sleeve (7) are axially arranged along the middle bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110962377.5A CN113670458B (en) | 2021-08-20 | 2021-08-20 | Battery thermal runaway experimental clamp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110962377.5A CN113670458B (en) | 2021-08-20 | 2021-08-20 | Battery thermal runaway experimental clamp |
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| CN113670458B true CN113670458B (en) | 2024-05-14 |
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