Multifunctional lithium battery thermal kinetics experimental device

Abstract

The utility model discloses a kind of multifunctional lithium battery thermal dynamics experimental device, belong to lithium battery thermal dynamics technical field, the device includes box, fixed frame is placed inside box, fixed frame includes fixed plate, fixed groove is equipped on fixed plate, heating assembly is placed in fixed groove, battery compartment for placing multiple lithium batteries is equipped in heating assembly, the top of heating assembly is connected with protection plate;The top and bottom of heating assembly are equipped with multiple power supply sockets and detection socket, multiple power supply columns and temperature sensing probe are separately equipped in protection plate interior, fixed groove top;Multiple grooves are sequentially equipped on the both sides of fixed groove, rotatable electrode plate is equipped in groove, the inside of electrode plate is equipped with contact block, rotate multiple electrode plate and heat assembly is clamped between multiple electrode plate, and the contact block of electrode plate is all contacted with lithium battery in heating assembly.The utility model can accurately measure multiple data, provide reliable data support for lithium battery thermal dynamics research.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery thermodynamics technology, specifically relating to a multifunctional lithium battery thermodynamics experimental device. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] The safety of lithium batteries is a crucial factor restricting their large-scale application. Lithium-ion battery thermodynamics is an effective measure to discover and solve safety issues from a fundamental perspective. A deep understanding of lithium-ion battery safety necessitates a systematic study of their thermodynamic mechanisms, clarifying the behavioral characteristics and specific hazards of thermal runaway, thereby enabling reliable regulation of lithium battery safety performance. Existing research on lithium-ion battery thermal runaway mainly focuses on two aspects: firstly, the study of lithium-ion battery thermodynamics, including the causes of thermal runaway, material thermal stability, and the thermodynamics of battery system reactions; secondly, the study of thermal diffusion and propagation performance, including the battery's own heat dissipation capacity, the mechanism and prevention of thermal propagation in battery packs, and optimization of battery pack thermal design. The main research approach involves experimentally obtaining the thermal runaway behavior of lithium battery materials and individual cells, analyzing the battery thermal runaway mechanism, quantifying the thermal properties of the battery using thermal diffusion tests, and employing numerical simulation to model the thermal runaway behavior of large-scale lithium-ion battery packs. This allows for optimization of the thermal design of lithium-ion batteries and their thermal propagation mechanisms, ultimately achieving effective prevention and control of lithium-ion battery thermal runaway. However, existing research on lithium battery thermodynamics experiments is lacking. Existing devices are usually complex in structure, cumbersome in operation, and costly, making them difficult to promote and use. Moreover, they cannot accurately simulate the thermal runaway process of lithium batteries. Utility Model Content

[0004] To address the aforementioned problems and deficiencies in existing technologies, this invention provides a multifunctional lithium battery thermodynamic experimental device. This device solves the problem that the lack of technical research on lithium battery thermodynamic experiments prevents the development of reliable data for lithium battery safety technology. The entire device has a simple structure and is easy to operate. It can accurately measure the temperature, surface, voltage, and resistance changes of the tested lithium battery, providing reliable data support for lithium battery thermodynamic research.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multifunctional lithium battery thermodynamic experimental device includes a housing; a fixing frame is placed inside the housing, the fixing frame includes a fixing plate, the fixing plate is provided with a fixing groove, a heating component is placed in the fixing groove, the heating component is provided with a battery compartment for placing multiple lithium batteries, and a protective plate is connected to the top of the heating component.

[0007] The heating assembly has multiple power sockets and detection sockets at its top and bottom. Multiple power posts and temperature probes are provided inside the protection plate and at the top of the fixing slot, respectively. Multiple grooves are provided on both sides of the fixing slot, and rotatable electrode plates are provided in the grooves. Contact blocks are provided on the inner side of the electrode plates. Rotating the multiple electrode plates will insert the heating assembly between the multiple electrode plates, and the contact blocks of the electrode plates will all contact the lithium battery in the heating assembly.

[0008] In a further technical solution, the multiple sets of power supply pillars and temperature probes inside the protection plate correspond one-to-one with the multiple sets of power sockets and detection sockets on the top of the heating assembly, and the multiple sets of power supply pillars and temperature probes on the top of the fixing slot correspond one-to-one with the multiple sets of power sockets and detection sockets on the bottom of the heating assembly.

[0009] A further technical solution is that the explosion-proof door is rotatably connected to the opening side of the enclosure; one side of the explosion-proof door is rotatably connected to the enclosure, and the other side of the explosion-proof door is detachably connected to the enclosure; the detachable connection includes a bolt connection.

[0010] A further technical solution is that a camera is provided on the inside of the explosion-proof door, and a handle is provided on the side of the explosion-proof door that is detachably connected to the housing.

[0011] In a further technical solution, the fixing frame also includes multiple support legs, which are fixedly installed on the bottom of the fixing plate.

[0012] In a further technical solution, the fixing plate is also provided with a plurality of evenly distributed heat dissipation holes.

[0013] In a further technical solution, the electrode plate has an inverted L-shaped structure, and the upper part of the electrode plate is detachably connected to the top of the heating assembly.

[0014] In a further technical solution, the protective plate is in the shape of an inverted U, the heating component is inserted into the U-shape of the protective plate, and the two sides of the protective plate are detachably connected to the fixing plate.

[0015] In a further technical solution, the heating assembly includes multiple heating modules, which are fixedly connected to each other. Each heating module has a power socket and a detection socket at its top and bottom.

[0016] The battery compartment is a cavity composed of multiple cylindrical shapes, and each heating module has one cylindrical cavity.

[0017] In a further technical solution, a temperature sensing probe passes through the inner wall of the battery compartment via a detection port and contacts the lithium battery placed in the battery compartment to detect and acquire lithium battery temperature data; a power supply post is inserted into a power socket to supply power to the heating component.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This utility model provides a multifunctional lithium battery thermodynamic experimental device, which solves the problem that the lack of technical research on lithium battery thermodynamic experiments has prevented the development of reliable data for lithium battery safety technology. The entire device has a simple structure and is easy to operate. It can accurately measure the temperature change, surface change, voltage change and resistance change of the tested lithium battery, providing reliable data support for lithium battery thermodynamic research.

[0020] 2. The multifunctional lithium battery thermodynamic experimental device provided by this utility model has a heating component divided into multiple heating modules, which can be used to heat specific areas of lithium batteries or to observe the heat transfer and influence between multiple lithium batteries, providing more effective data support for lithium battery thermodynamic research.

[0021] 3. The multifunctional lithium battery thermodynamic experimental device provided by this utility model provides a safety guarantee for lithium battery thermodynamic research through its protection plate and enclosure. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0023] Figure 1 This is a schematic diagram of the overall structure of the multifunctional lithium battery thermodynamic experimental device described in this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the fixing frame in the device described in this utility model;

[0025] Figure 3 This is a schematic diagram of the heating component in the device described in this utility model;

[0026] Figure 4 This is a schematic diagram of the dispersed structure of the fixing frame, heating component and protective plate in the device described in this utility model;

[0027] Figure 5 This is a schematic diagram of the combined structure of the fixing frame, heating component and protective plate in the device described in this utility model.

[0028] The components are as follows: 1. Enclosure; 2. Explosion-proof door; 3. Fixing frame; 4. Fixing plate; 5. Support leg; 6. Fixing groove; 7. Heat dissipation hole; 8. Power column; 9. Temperature probe; 10. Groove; 11. Electrode plate; 12. Heating component; 13. Protection plate; 14. Contact block; 15. Battery compartment; 16. Heating module; 17. Camera; 18. Handle; 19. Power socket; 20. Detection socket. Detailed Implementation

[0029] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] This utility model discloses a multifunctional lithium battery thermodynamic experimental device, which solves the problem that the lack of technical research on lithium battery thermodynamic experiments has prevented the development of reliable basis for lithium battery safety technology. Through this device, lithium battery thermodynamic experiments can be carried out to collect data on the temperature, voltage and resistance of lithium batteries and to effectively observe the appearance of lithium batteries.

[0032] The multifunctional lithium battery thermodynamic experimental device proposed in this utility model, such as Figure 1 As shown, the device includes a hollow housing 1 containing a mounting bracket 3. An explosion-proof door 2 is rotatably connected to the opening of the housing 1; that is, one side of the explosion-proof door 2 is rotatably connected to the housing 1, while the other side of the explosion-proof door 2 is detachably connected to the housing 1, including bolt connections. Furthermore, a camera 17 is installed inside the explosion-proof door 2, and a handle 18 is provided on the side of the explosion-proof door 2 detachably connected to the housing. The camera facilitates researchers' observation of the lithium battery's status, providing image support for data collection, while the handle facilitates personnel operation.

[0033] The aforementioned mounting bracket 3 is placed inside the housing 1 and is slidably connected to the housing 1. The mounting bracket 3 includes a mounting plate 4 and multiple support legs 5, which are fixedly installed on the bottom of the mounting plate 4. The mounting plate 4 has a mounting groove 6, in which the heating assembly 12 is placed. Figure 3 As shown, the heating component 12 is a cuboid with a battery compartment 15 in its center for holding multiple lithium batteries, as... Figure 4 and Figure 5 As shown, a protective plate 13 is also connected to the top of the heating component 12. The protective plate 13 is inverted U-shaped, and the heating component 12 is inserted into the U-shaped interior of the protective plate 13. The two sides of the protective plate 13 are detachably connected to the fixing plate 4.

[0034] Furthermore, the heating assembly 12 is provided with multiple sets of power sockets 19 and detection sockets 20 at both the top and bottom. Multiple sets of power posts 8 and temperature probes 9 are provided inside the protective plate and at the top of the fixing slot, respectively. The multiple sets of power posts 8 and temperature probes 9 provided inside the protective plate 13 correspond one-to-one with the multiple sets of power sockets 19 and detection sockets 20 at the top of the heating assembly 12. The multiple sets of power posts 8 and temperature probes 9 provided at the top of the fixing slot 6 correspond one-to-one with the multiple sets of power sockets 19 and detection sockets 20 at the bottom of the heating assembly 12. The power sockets 19 and power posts 8 are fitted together, and the detection sockets 20 and temperature probes 9 are fitted together.

[0035] Furthermore, the heating assembly 12 includes multiple heating modules 16, which are fixedly connected to each other. Each heating module 16 has a power socket 19 and a probe socket 20 at its top and bottom. The battery compartment 15 in the heating assembly 12 is a cavity composed of multiple cylinders, and each heating module 16 has a cylindrical cavity for placing lithium batteries. Based on this configuration, multiple lithium batteries can be placed in the battery compartment 15. The temperature probe 9 passes through the probe socket 20 through the inner wall of the battery compartment 15 and contacts the lithium batteries placed in the battery compartment 15 to detect and acquire lithium battery temperature data. Direct contact can further increase the accuracy of the detection data. The design of the heating assembly allows for convenient heating tests on a specific location and also tests the heat transfer and influence between lithium batteries. In addition, the protection board 13 protects the heating assembly 12 for safety and stability while providing power and the temperature probe. The overall layout is reasonable, effectively reducing the bulkiness of the equipment and making operation convenient and quick.

[0036] The aforementioned power supply post 8 is inserted into the power socket 19 to supply power to the heating assembly 12. Furthermore, each heating module 16 has a power socket 19 at its top and bottom. The power supply post 8 corresponding to the top of the fixing slot inside the protective plate is inserted into the power socket 19 of that heating module. Preferably, each heating module has a heating element for heating the battery compartment, which is powered by the power supply post 8. Additionally, the power supply post is electrically connected to an external power source, and the heating element, temperature sensor, camera, etc., are all electrically connected to an external controller for data and control command transmission.

[0037] Based on the above configuration, the battery compartment 15 is located inside the heating assembly 12, which can cover the outside of the lithium battery for heating, thereby improving heating efficiency. The configuration of the power socket 19, power column 8, detection socket 20 and temperature probe 9 improves the efficiency of power connection and placement of temperature probe 9, and reduces the risk of erroneous operation.

[0038] like Figure 5 As shown, multiple grooves 10 are sequentially arranged on both sides of the fixing groove 6. Rotatable electrode plates 11 are installed in the grooves 10. The electrode plates 11 have an inverted L-shaped structure, with a contact block 14 located in the center of their inner side. Rotating the multiple electrode plates 11 allows the heating assembly 12 to be inserted between them. The upper part of the electrode plates 11 is detachably connected to the top of the heating assembly 12, and the contact blocks 14 of the electrode plates 11 all contact the lithium battery in the heating assembly 12. By detachably connecting the electrode plates 11 to the heating assembly 12, positioning of the electrode plates 11 is provided, ensuring that the electrode plates 11 do not move and preventing poor contact between the contact blocks 14 and the lithium battery.

[0039] With the above setup, the fixing plate 4, fixing groove 6, protection plate 13 and box 1 provide a safety guarantee for the study of lithium battery thermodynamics. The power column 8 can provide power to the heating component 12 in a convenient and reliable manner. The temperature probe 9 can detect the battery temperature and the electrode plate 11 can detect the battery voltage and internal resistance.

[0040] In addition, the fixing plate 4 is provided with a number of evenly distributed heat dissipation holes 7 to facilitate the heat dissipation of the heating component 12.

[0041] The specific working process of this utility model is as follows:

[0042] During use, multiple or a single lithium battery is placed in the battery compartment 15, the heating component 12 is placed in the fixing slot 6, the power post 8 in the fixing slot 6 is inserted into the power socket 19, the temperature probe 9 is inserted into the detection socket 20, the protection plate 13 is put on the heating component 12 and connected to the fixing plate 4, the power post 8 on the protection plate 13 is inserted into the power socket 19, the temperature probe 9 is inserted into the detection socket 20, the electrode plate 11 is connected to the top of the heating component 12, the contact block 14 is in contact with the lithium battery, the assembled fixing frame 3 is placed inside the box 1, and finally the explosion-proof door is closed to carry out subsequent lithium battery thermodynamic experiments.

[0043] This invention uses a housing and a protective plate to ensure safety during experiments; the heating component is divided into multiple heating modules to heat different parts of the battery; and temperature sensors, cameras, and electrode plates are set up to accurately collect data and changes in the temperature, appearance, voltage, and resistance of the lithium battery, providing reliable basis and data support for the development of lithium battery safety technology.

[0044] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A multifunctional lithium battery thermodynamic experimental apparatus, characterized in that, Includes a housing; a fixing frame is placed inside the housing, the fixing frame includes a fixing plate, the fixing plate has a fixing groove, a heating component is placed in the fixing groove, the heating component has a battery compartment for placing multiple lithium batteries, and a protective plate is connected to the top of the heating component; The heating assembly has multiple power sockets and detection sockets at its top and bottom. Multiple power posts and temperature probes are provided inside the protection plate and at the top of the fixing slot, respectively. Multiple grooves are provided on both sides of the fixing slot, and rotatable electrode plates are provided in the grooves. Contact blocks are provided on the inner side of the electrode plates. Rotating the multiple electrode plates will insert the heating assembly between the multiple electrode plates, and the contact blocks of the electrode plates will all contact the lithium battery in the heating assembly.

2. The multifunctional lithium battery thermodynamic experimental device as described in claim 1, characterized in that, The multiple sets of power supply posts and temperature probes inside the protection plate correspond one-to-one with the multiple sets of power sockets and detection sockets on the top of the heating assembly, and the multiple sets of power supply posts and temperature probes on the top of the fixing slot correspond one-to-one with the multiple sets of power sockets and detection sockets on the bottom of the heating assembly.

3. The multifunctional lithium battery thermodynamic experimental device as described in claim 1, characterized in that, The enclosure is rotatably connected to an explosion-proof door on its open side; one side of the explosion-proof door is rotatably connected to the enclosure, and the other side of the explosion-proof door is detachably connected to the enclosure; the detachable connection includes a bolt connection.

4. The multifunctional lithium battery thermodynamic experimental device as described in claim 3, characterized in that, A camera is installed on the inside of the explosion-proof door, and a handle is provided on the side of the explosion-proof door that is detachably connected to the housing.

5. The multifunctional lithium battery thermodynamic experimental device as described in claim 1, characterized in that, The mounting bracket also includes multiple legs, which are fixedly installed on the bottom of the mounting plate.

6. The multifunctional lithium battery thermodynamic experimental apparatus as described in claim 1, characterized in that, The mounting plate is also provided with a number of evenly distributed heat dissipation holes.

7. The multifunctional lithium battery thermodynamic experimental apparatus as described in claim 1, characterized in that, The electrode plate has an inverted L-shaped structure, and the upper part of the electrode plate is detachably connected to the top of the heating assembly.

8. The multifunctional lithium battery thermodynamic experimental apparatus as described in claim 1, characterized in that, The protective plate is inverted U-shaped, and the heating component is inserted into the U-shaped part of the protective plate. The two sides of the protective plate are detachably connected to the fixing plate.

9. The multifunctional lithium battery thermodynamic experimental apparatus as described in claim 1, characterized in that, The heating assembly includes multiple heating modules that are fixedly connected to each other. Each heating module has a power socket and a detection socket at its top and bottom. The battery compartment is a cavity composed of multiple cylindrical shapes, and each heating module has one cylindrical cavity.

10. A multifunctional lithium battery thermodynamic experimental apparatus as described in claim 1, characterized in that, The temperature probe passes through the inner wall of the battery compartment via the probe port and contacts the lithium battery placed in the battery compartment to detect and acquire the lithium battery temperature data; the power supply post is inserted into the power socket to supply power to the heating component.

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