Sample stage and adiabatic acceleration calorimeter

Abstract

The utility model belongs to the technical field of battery detection, and particularly relates to a sample table and a heat insulation acceleration calorimeter, the sample table and the heat insulation acceleration calorimeter comprise a mounting piece and at least three suspension assemblies, the suspension assemblies are arranged on the mounting piece in a penetrating manner, and the length of the suspension assemblies extending out of the mounting piece is adjustable; the suspension assembly is provided with a bearing plate in a suspension manner below the mounting piece; the battery is suspended in the air in the battery testing process, no contact heat exchange exists between the battery and the inner wall of the cavity, the data accuracy is improved, the testing accuracy is improved, the position of the battery in the cavity can be flexibly adjusted, and the battery can be evenly heated.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery detection, and in particular relates to a sample platform and an adiabatic accelerating calorimeter. Background Art

[0002] The thermal stability assessment of lithium-ion batteries is an important part of the safety assessment of lithium-ion batteries. The adiabatic accelerating calorimeter can perform thermal stability tests on lithium-ion batteries, explore the battery's specific heat capacity, self-heating starting temperature, thermal runaway starting temperature and thermal runaway time, and systematically evaluate the thermal stability of the battery.

[0003] Relevant technical center, in the adiabatic accelerating calorimeter, the battery is generally placed on a metal tripod to test the thermal performance parameters. The metal tripod is padded with wool felt and then wrapped with a circle of high-temperature resistant glass fiber tape to prevent heat conduction with the tripod.

[0004] However, the tripod directly contacts the bottom of the cavity, and the heat from the bottom is easily transferred to the large battery through the tripod, resulting in contact heat exchange between the battery, the cavity, and the tripod, so that the test data cannot truly reflect the thermal performance parameters of the battery. It is necessary to manually wrap the insulation material on the tripod, which is troublesome to operate.

[0005] Therefore, due to the technical problem that the battery in the adiabatic accelerating calorimeter contacts the inner wall of the cavity during the test to generate heat exchange, resulting in inaccurate battery detection, it is necessary to design a new sample stage and adiabatic accelerating calorimeter. Utility Model Content

[0006] The utility model aims to provide a sample platform and an adiabatic accelerating calorimeter to solve the above technical problems.

[0007] In order to solve the above technical problems, the utility model provides a sample stage, comprising:

[0008] Mounting parts, and

[0009] At least three suspension components, wherein the suspension components are inserted into the mounting member, and the length of the suspension components extending from the mounting member is adjustable;

[0010] The suspension assembly suspends a bearing plate below the mounting member.

[0011] Furthermore, there are three suspension components, and the suspension components are arranged in a triangle on the mounting member.

[0012] Furthermore, there are four suspension components, and the suspension components are arranged at four corners on the mounting member.

[0013] Further, the suspension assembly includes: a stud and a nut;

[0014] The stud is disposed on the mounting member, that is, the top end of the stud is located above the mounting member, and the bottom end of the stud is located below the mounting member;

[0015] The nut is arranged on the stud, the nut is located below the mounting member, and the nut is suitable for locking the length of the stud extending out of the mounting member;

[0016] A bearing plate is suspended at the bottom of the stud.

[0017] Furthermore, a through hole is provided on the stud, and the through hole is arranged near the bottom end of the stud;

[0018] A connecting wire is passed through the through hole, and a carrying plate is connected to the connecting wire;

[0019] The bearing plate is located below the bottom end of the stud.

[0020] Furthermore, a connecting wire is fixedly connected to the stud, and a bearing plate is connected to the connecting wire;

[0021] The bearing plate is located below the bottom end of the stud.

[0022] Furthermore, the supporting plate is provided with a connecting hole, and the connecting hole corresponds to the connecting line.

[0023] Further, the mounting piece is movably connected to the top surface of the box body;

[0024] The bearing plate is suspended inside the box.

[0025] Furthermore, the bearing plate is suitable for being made of ceramic fiber.

[0026] On the other hand, the utility model also provides an adiabatic accelerating calorimeter using the above sample stage, comprising:

[0027] Sample stage, heating wire, thermocouple wire and power cord;

[0028] The heating wire, the thermocouple wire and the power supply wire are connected to the battery to be tested on the sample stage.

[0029] The beneficial effect of the utility model is that the utility model uses a mounting piece and at least three suspension components, the suspension components are inserted into the mounting piece, and the length of the suspension components extending from the mounting piece is adjustable; the suspension components suspend a load-bearing plate below the mounting piece; the battery is suspended in the air during the battery test, and there is no contact heat exchange between the battery and the inner wall of the cavity, which improves the accuracy of the data, improves the accuracy of the test, and the position of the battery in the cavity can be flexibly adjusted, so that the battery can be heated evenly.

[0030] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a structural schematic diagram of the triangular arrangement of the suspension components of the utility model;

[0034] Figure 2 It is a schematic diagram of the structure of the four corners arrangement of the suspension components of the utility model;

[0035] Figure 3 It is a structural schematic diagram of a sample platform of the utility model.

[0036] In the figure:

[0037] 1 mounting part, 2 studs, 3 nuts, 4 through holes, 5 connecting wires, 6 bearing plates, 7 connecting holes, 8 box body. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] like Figures 1 to 3As shown, at least one embodiment provides a sample table, comprising: a mounting member 1, and at least three suspension components, wherein the suspension components are inserted through the mounting member 1, and the length of the suspension components extending from the mounting member 1 is adjustable, and the suspension height of the support plate 6 is adjusted by adjusting the distance that the suspension components extend from the top surface of the mounting member 1, so that the height of the battery on the support plate 6 can be adjusted in the cavity; the support plate 6 is suspended by the suspension component below the mounting member 1; the battery is suspended in the air during the battery test, and there is no contact heat exchange between the battery and the inner wall of the cavity, thereby improving the accuracy of the data, so that the accuracy of the test is improved, and the position of the battery in the cavity can be flexibly adjusted, so that the battery can be heated evenly.

[0040] An optional implementation manner is that there are three suspension components, and the suspension components are arranged in a triangular shape on the mounting member 1. The three suspension components form a triangle, so that the suspended supporting plate 6 can be stably suspended in the cavity inside the box 8, preventing the battery from falling from the supporting plate 6 during the test.

[0041] Another optional implementation manner is that there are four suspension components, and the suspension components are arranged at four corners on the mounting member 1. The four suspension components form a rectangle, so that the suspended supporting plate 6 can be stably suspended in the cavity inside the box 8 to prevent the battery from falling from the supporting plate 6 during the test.

[0042] The suspension assembly comprises: a stud 2 and a nut 3; the stud 2 is passed through the mounting member 1, that is, the top end of the stud 2 is located above the mounting member 1, and the bottom end of the stud 2 is located below the mounting member 1; the nut 3 is arranged on the stud 2, the nut 3 is located below the mounting member 1, and the nut 3 is suitable for locking the length of the stud 2 extending out of the mounting member 1; a bearing plate 6 is suspended at the bottom of the stud 2; a hole or threaded hole corresponding to the stud 2 can be opened on the mounting member 1 to facilitate the passage of the stud 2. After the position of the stud 2 is determined, the nut 3 can be tightened on the stud 2 so that the nut 3 contacts the bottom surface of the mounting member 1 to fix the position of the stud 2, so that the suspension height of the battery is fixed; the nut 3 can also be tightened on the stud 2 at the same time above the top surface and below the bottom surface of the mounting member 1 to fix the stud 2 from two positions to prevent the stud 2 from moving, so that the suspension height of the battery is fixed.

[0043] In an optional embodiment, a through hole 4 is provided on the stud 2, and the through hole 4 is arranged near the bottom end of the stud 2; a connecting wire 5 is passed through the through hole 4, and a supporting plate 6 is connected to the connecting wire 5; the supporting plate 6 is located below the bottom end of the stud 2; passing the connecting wire 5 through the through hole 4 can facilitate the replacement of the connecting wire 5, and when the connecting wire 5 is damaged, the connecting wire 5 can be directly cut off and pulled out from the through hole 4 for replacement; the connecting wire 5 can be flexible, and when the mounting member 1 is opened, the flexible connecting wire 5 can keep the supporting plate 6 still horizontal, that is, when the mounting member 1 is opened, the connecting wire 5 bends due to the weight of the supporting plate 6, and the supporting plate 6 remains horizontal, thereby preventing the battery from falling into the cavity.

[0044] In another optional embodiment, a connecting wire 5 is fixedly connected to the stud 2, and a supporting plate 6 is connected to the connecting wire 5; the supporting plate 6 is located below the bottom end of the stud 2; the fixed connection method can be welding, etc., which is convenient for fixing the position of the connecting wire 5.

[0045] The carrying plate 6 is provided with a connecting hole 7 , and the connecting hole 7 corresponds to the connecting line 5 , so that the carrying plate 6 is easy to replace.

[0046] The mounting member 1 is movably connected to the top surface of the box 8; the supporting plate 6 is suspended inside the box 8; the mounting member 1 can be a cover plate on the top surface of the box 8, etc.; the battery is placed on the supporting plate 6 and then suspended inside the box 8, the box 8 is heated, and the battery is tested. The box 8 can avoid heat loss, which is convenient for adjusting the ambient temperature around the battery and facilitating testing of the battery; the temperature inside the box 8 may not be very uniform, so the temperature around the battery can reach the required temperature by adjusting the suspension position of the supporting plate 6, so as to facilitate accurate testing of the battery.

[0047] The carrier plate 6 is suitable for being made of ceramic fiber; the high-temperature resistant ceramic fiber board has a very low thermal conductivity, which ensures that there is no heat exchange between the battery and the carrier plate 6, and there is no need to manually wrap wool felt to avoid heat conduction with the battery. The operation is convenient and the data accuracy is improved. For example, the load-bearing capacity of the carrier plate 6 is higher than 10kg, the heat-resistant temperature is as high as 1000°C, the thermal conductivity is very low, and it is located in the middle of the cavity. The height of the carrier plate 6 in the cavity can be changed by adjusting the height of the stud 2. It does not contact the side and bottom of the cavity, which can ensure that the battery is heated evenly and there is no contact heat exchange with the inner wall of the cavity.

[0048] In some other embodiments, an adiabatic accelerating calorimeter using the above-mentioned sample stage is also provided, including: a sample stage, a heating wire, a thermocouple wire and a power cord; the heating wire, the thermocouple wire and the power cord are connected to the battery to be tested on the sample stage; the battery to be tested can be placed on a carrier plate 6, and after the heating wire, the thermocouple wire and the power cord are connected, specific heat capacity, thermal runaway temperature test, etc. can be carried out.

[0049] In summary, the utility model comprises a mounting member 1 and at least three suspension components. The suspension components are inserted into the mounting member 1, and the length of the suspension components extending from the mounting member 1 is adjustable. The suspension components suspend a supporting plate 6 below the mounting member 1. The battery is suspended in the air during the battery test, and there is no contact heat exchange between the battery and the inner wall of the cavity, thereby improving the accuracy of the data and the accuracy of the test. In addition, the position of the battery in the cavity can be flexibly adjusted, so that the battery can be heated evenly.

[0050] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0051] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0053] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A sample stage, characterized in that: include: Mounting parts, and At least three suspension components, the suspension components are inserted into the mounting member, and the length of the suspension components extending from the mounting member is adjustable; The suspension assembly suspends a bearing plate below the mounting member.

2. The sample stage according to claim 1, characterized in that: There are three suspension components, which are arranged in a triangular shape on the mounting member.

3. The sample stage according to claim 1, characterized in that: There are four suspension components, and the suspension components are arranged at four corners on the mounting member.

4. The sample stage according to claim 1, characterized in that: The suspension assembly comprises: a stud and a nut; The stud is disposed on the mounting member, that is, the top end of the stud is located above the mounting member, and the bottom end of the stud is located below the mounting member; The nut is arranged on the stud, the nut is located below the mounting member, and the nut is suitable for locking the length of the stud extending out of the mounting member; A bearing plate is suspended at the bottom of the stud.

5. The sample stage according to claim 4, characterized in that: A through hole is formed on the stud, and the through hole is arranged close to the bottom end of the stud; A connecting wire is passed through the through hole, and a carrying plate is connected to the connecting wire; The bearing plate is located below the bottom end of the stud.

6. The sample stage according to claim 4, characterized in that: A connecting wire is fixedly connected to the stud, and a bearing plate is connected to the connecting wire; The bearing plate is located below the bottom end of the stud.

7. The sample stage according to claim 5 or claim 6, characterized in that: The carrying plate is provided with a connecting hole, and the connecting hole corresponds to the connecting line.

8. The sample stage according to claim 1, characterized in that: The mounting piece is movably connected to the top surface of the box body; The bearing plate is suspended inside the box.

9. The sample stage according to claim 1, characterized in that: The bearing plate is suitably made of ceramic fiber.

10. An adiabatic accelerating calorimeter using the sample stage according to any one of claims 1 to 9, characterized in that: include: Sample stage, heating wire, thermocouple wire and power cord; The heating wire, the thermocouple wire and the power supply wire are connected to the battery to be tested on the sample stage.

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