Pressure-resistant blasting test tool and pressure-resistant blasting test system

Abstract

The utility model provides a pressure-resistant blasting testing tool and a pressure-resistant blasting testing system, and belongs to the technical field of pressure-resistant blasting testing. The pressure-resistant blasting test tool is used for testing the blasting pressure of a pressure relief component, and the pressure relief component comprises a first wall part provided with a pressure relief mechanism. The pressure-resistant blasting test tool comprises a first component and a second component, the first component is provided with an inlet channel, the second component is provided with a discharge channel, the second component and the first component are used for clamping the first wall portion in a matched mode, and the discharge channel is used for discharging a fluid medium flowing through the first wall portion from the inlet channel when the pressure relief mechanism is actuated. The pressure-resistant blasting test tool with the structure is simple in structure, when a blasting test is carried out on the pressure relief component, the first component and the second component can directly act on the two sides of the first wall part of the pressure relief component, the test process can be simplified, and the pressure-resistant blasting test quality of the pressure relief component is improved.

Description

Technical Field

[0001] The present application relates to the technical field of pressure-resistance bursting test, and in particular to a pressure-resistance bursting test tool and a pressure-resistance bursting test system. Background Art

[0002] In recent years, new energy vehicles have developed by leaps and bounds. In the field of electric vehicles, power batteries, as the power source of electric vehicles, play an irreplaceable and important role. With the vigorous promotion of new energy vehicles, the demand for power battery products is also growing. As the demand for batteries increases, higher requirements are placed on the reliability of battery cells.

[0003] In battery technology, in order to improve the reliability of battery cells, a pressure relief component can be set in the battery cell, and the pressure can be relieved through the pressure relief component when the battery cell is in thermal runaway. In the battery cell, it is generally necessary to perform a pressure-resistant explosion test on the pressure relief component to obtain the explosion pressure of the pressure relief component. However, the quality of the pressure-resistant explosion test of the pressure relief component is currently poor, and it is difficult to accurately obtain the explosion pressure of the pressure relief component. Utility Model Content

[0004] The embodiments of the present application provide a pressure-resistance burst test tool and a pressure-resistance burst test system, which can effectively improve the pressure-resistance burst test quality of a pressure relief component.

[0005] In a first aspect, an embodiment of the present application provides a pressure-resistant bursting test fixture for testing the bursting pressure of a pressure relief component, the pressure relief component comprising a first wall portion provided with a pressure relief mechanism; the pressure-resistant bursting test fixture comprises a first component and a second component, the first component being provided with an inlet channel, the second component being provided with a discharge channel, the second component and the first component being used to cooperate in clamping the first wall portion, the discharge channel being used to discharge a fluid medium flowing through the first wall portion from the inlet channel when the pressure relief mechanism is actuated.

[0006] In the above technical solution, the first wall portion is clamped by the cooperation of the first component and the second component to fix the first wall portion. After the fluid medium is injected into the inlet channel of the first component, the pressure in the inlet channel will gradually increase until the pressure in the inlet channel reaches the bursting pressure of the pressure relief component, so that the pressure relief mechanism is actuated, and the fluid medium in the inlet channel will flow through the first wall portion and be discharged through the discharge channel of the second component. In this process, the peak pressure in the inlet channel is the bursting pressure of the pressure relief component. The structure of the pressure-resistant bursting test fixture of this structure is simple. When performing a bursting test on the pressure relief component, the first component and the second component can directly act on both sides of the first wall portion of the pressure relief component, which can simplify the test process and improve the quality of the pressure-resistant bursting test of the pressure relief component.

[0007] In some embodiments, the first component has a first clamping surface, the first clamping surface is used to abut against the first wall portion; the entry channel includes a first avoidance cavity, the first avoidance cavity forms a first opening on the first clamping surface, and the first avoidance cavity is used to avoid the pressure relief mechanism. The provision of the first avoidance cavity can reduce the influence of the first component squeezing the first wall portion on the strength of the pressure relief mechanism, and reduce the risk of premature actuation of the pressure relief mechanism during the test, resulting in inaccurate bursting pressure of the pressure relief component under test.

[0008] In some embodiments, the pressure burst test fixture further includes a first seal, which is disposed on the first component and is used to seal the gap between the first clamping surface and the first wall portion. The provision of the first seal can improve the sealing performance between the first component and the first wall portion, reduce the risk of the fluid medium entering the channel leaking through the gap between the first clamping surface and the first wall portion during the test, and further improve the pressure burst test quality of the pressure relief component.

[0009] In some embodiments, the first sealing member is an annular structure, and the first sealing member is disposed around the first opening. The annular first sealing member has a simple structure and can well achieve sealing between the first component and the first wall portion.

[0010] In some embodiments, the first clamping surface is provided with a first limiting groove, and at least a portion of the first sealing member is accommodated in the first limiting groove. The first limiting groove serves to limit the first sealing member, thereby reducing the difficulty of installing the first sealing member.

[0011] In some embodiments, the entry channel further includes a first channel, one end of the first channel extends to the cavity wall surface of the first avoidance cavity opposite to the first opening, and the other end of the first channel extends to the outer surface of the first component. In this way, the cross section of the first channel can be made smaller than the cross section of the first avoidance cavity, which is beneficial to improve the strength of the first component on the one hand, and facilitates the connection between the entry channel and the fluid medium providing device on the other hand.

[0012] In some embodiments, the second component has a second clamping surface, the second clamping surface is used to abut against the first wall portion; the discharge channel includes a second avoidance cavity, the second avoidance cavity forms a second opening on the second clamping surface, and the second avoidance cavity is used to avoid the pressure relief mechanism. The provision of the second avoidance cavity can reduce the influence of the second component on the strength of the pressure relief mechanism when squeezing the first wall portion, and reduce the risk of premature actuation of the pressure relief mechanism during the test, resulting in inaccurate bursting pressure of the pressure relief component under test.

[0013] In some embodiments, the pressure burst test fixture further includes a second seal, which is disposed on the second component and is used to seal the gap between the second clamping surface and the first wall portion. The provision of the second seal can improve the sealing performance between the second component and the first wall portion, and reduce the risk of fluid medium leaking through the gap between the second clamping surface and the first wall portion during the test.

[0014] In some embodiments, the second sealing member is an annular structure, and the second sealing member is arranged around the second opening. The annular second sealing member has a simple structure and can well achieve sealing between the second component and the first wall.

[0015] In some embodiments, the second clamping surface is provided with a second limiting groove, and at least a portion of the second sealing member is accommodated in the second limiting groove. The second limiting groove serves to limit the second sealing member, thereby reducing the difficulty of installing the second sealing member.

[0016] In some embodiments, the discharge channel further includes a second channel, one end of the second channel extends to the cavity wall surface of the second avoidance cavity opposite to the second opening, and the other end of the second channel extends to the outer surface of the second component. In this way, the cross section of the second channel can be made smaller than the cross section of the second avoidance cavity, which is conducive to improving the strength of the second component.

[0017] In some embodiments, the second component includes a base and a limiting portion; the base has a second clamping surface, the second clamping surface is used to abut against the first wall portion, the discharge channel is formed in the base, and the discharge channel forms a second opening on the second clamping surface; the limiting portion is connected to the base, the limiting portion has an inner side surface, the inner side surface is connected to the second clamping surface, the inner side surface and the second clamping surface jointly define a limiting cavity, the limiting cavity is used to accommodate at least a part of the pressure relief component, so that the second component and the pressure relief component form a positioning fit. The base and the limiting portion jointly form a limiting cavity, and during the test process, the pressure relief component can form a positioning fit with the limiting cavity, so that the pressure relief component can reach the specified position of the second component more quickly, realize the rapid docking of the pressure relief component and the second component, and enable the second component to accurately press against the first wall portion.

[0018] In some embodiments, the pressure-resistant burst test fixture further includes a driving mechanism, which is configured to drive the first component and the second component to approach each other so that the first component and the second component cooperate to clamp the first wall portion. The driving mechanism drives the first component and the second component to approach each other, so that the first component and the second component apply a clamping force to the first wall portion to improve the sealing performance of the first component and the second component with the pressure relief component.

[0019] In some embodiments, the driving mechanism includes a fixed member, a movable member, and a driving member; the fixed member includes a first connecting seat, the movable member is movably disposed on the fixed member along a first direction, along the first direction, the movable member is disposed opposite to the first connecting seat, the first component and the second component are disposed opposite to each other, and are located between the movable member and the first connecting seat; the driving member connects the movable member and the fixed member, and the driving member is configured to drive the movable member to move along the first direction so that the movable member is away from or close to the first connecting seat. By driving the movable member to approach the first connecting seat through the driving member, the first component and the second component can apply a clamping force to the first wall portion, and by driving the movable member to move away from the first connecting seat through the driving member, the extrusion force applied by the driving mechanism to the first component and the second component can be removed. The driving mechanism has a simple structure, can continuously apply pressure to the first component and the second component, and can conveniently remove the pressure relief component after the test is completed.

[0020] In some embodiments, the fixing member further comprises a second connection seat and a guide member; along the first direction, the second connection seat is arranged opposite to the first connection seat, the movable member is located between the second connection seat and the first connection seat, and the driving member connects the second connection seat and the movable member; the guide member extends along the first direction, the guide member connects the second connection seat and the first connection seat, and the movable member is slidably connected to the guide member. By arranging the guide member between the first connection seat and the second connection seat, and making the movable member slidably connected to the guide member, the stability of the movable member moving along the first direction can be improved, so as to apply pressure to the first component and the second component more evenly.

[0021] In a second aspect, an embodiment of the present application provides a pressure-resistant bursting test system, comprising a pressure relief component and a pressure-resistant bursting test tooling provided by any embodiment of the first aspect; the pressure relief component comprises a first wall portion provided with a pressure relief mechanism; the second component and the first component cooperate to clamp the first wall portion.

[0022] In some embodiments, the pressure relief component is a shell, the shell includes a side wall and a first wall portion, the side wall is arranged around the first wall portion, the first wall portion is located at one end of the side wall, and the end of the side wall opposite to the first wall portion is formed with a third opening for the first component to enter the interior of the shell; wherein the first component has a first clamping surface, at least part of the first component is accommodated in the shell, and the first clamping surface is against the inner surface of the first wall portion, so that the first component forms a positioning fit with the shell. During the test process, the first component can be inserted into the shell and forms a positioning fit with the shell, so that the first component can reach the specified position of the first wall portion more quickly, so that the first component can accurately press against the first wall portion.

[0023] In some embodiments, the second component has a limiting cavity, and the limiting cavity has a fourth opening for the shell to enter the limiting cavity; at least part of the shell is accommodated in the limiting cavity, and the cavity wall surface of the limiting cavity opposite to the fourth opening abuts against the outer surface of the first wall portion, so that the second component and the shell form a positioning fit. During the test process, the shell can form a positioning fit with the limiting cavity, so that the shell can reach the specified position of the second component more quickly, and the shell and the second component can be quickly docked, so that the second component and the first component can quickly and accurately clamp the first wall portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 An exploded view of a battery cell provided for some embodiments of the present application;

[0026] Figure 2 An exploded view of a pressure-resistant burst test tool provided in some embodiments of the present application;

[0027] Figure 3 for Figure 2 The structural schematic diagram of the pressure burst test tooling shown;

[0028] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0029] Figure 5 for Figure 3 A schematic structural diagram of the first component shown;

[0030] Figure 6 A diagram showing the position relationship between a first sealing member and a first wall portion provided in some embodiments of the present application;

[0031] Figure 7 A diagram showing the position relationship between the first sealing member and the first wall portion provided in some other embodiments of the present application;

[0032] Figure 8 A position relationship diagram of a first sealing member and a first wall portion provided in some other embodiments of the present application;

[0033] Fig. 9 A position relationship diagram of a first sealing member and a first wall portion provided in some further embodiments of the present application;

[0034] Fig.10 for Figure 3A schematic structural diagram of the second component shown;

[0035] Fig.11 An exploded view of a pressure-resistant burst test tool provided in some other embodiments of the present application;

[0036] Fig.12 for Fig.11 The structural schematic diagram of the pressure burst test tooling shown;

[0037] Fig.13 for Fig.12 A partial enlarged view of point B in the middle;

[0038] Fig.14 for Fig.12 A schematic structural diagram of the second component shown;

[0039] Fig.15 An axonometric diagram of a pressure-resistant burst test tool provided for some embodiments of the present application;

[0040] Fig.16 An exploded diagram of a pressure-resistant burst test system provided in some embodiments of the present application;

[0041] Fig.17 for Fig.16 The assembly drawing of the pressure burst test system shown;

[0042] Fig.18 for Fig.17 An axonometric view of the housing shown;

[0043] Fig.19 for Fig.18 The structural schematic diagram of the shell is shown.

[0044] Icons: 1-first component; 11-entry channel; 111-first avoidance cavity; 1111-first opening; 1112-first cavity wall; 112-first channel; 1121-first entrance; 12-first clamping surface; 121-first limiting groove; 2-second component; 21-discharge channel; 211-second avoidance cavity; 2111-second opening; 2112-second cavity wall; 212-second channel; 2121-second discharge port; 22-second clamping surface; 221-second limiting groove; 23-base; 24-limiting part; 241-inner side; 25-limiting cavity; 251-fourth opening; 3-first sealing member; 4- The second sealing member; 5-driving mechanism; 51-fixing member; 511-first connecting seat; 512-second connecting seat; 513-guiding member; 52-movable member; 53-driving member; 10-pressure-resistant bursting test fixture; 20-battery cell; 201-shell; 2011-shell; 2012-end cover; 202-pressure relief member; 2021-first wall; 20211-inner surface of the first wall; 20212-outer surface of the first wall; 2022-pressure relief mechanism; 2023-side wall; 20231-third opening; 203-electrode assembly; 204-electrode terminal; 100-pressure-resistant bursting test system; X-first direction. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0047] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0048] In the description of this application, it should be noted that, 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 direct connection, or an indirect connection 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 this application can be understood according to specific circumstances.

[0049] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0050] The term "plurality" used in the present application refers to two or more (including two).

[0051] In battery technology, in order to improve the reliability of battery cells, a pressure relief component may be provided in the battery cells, and pressure may be relieved through the pressure relief component when the battery cells are in thermal runaway.

[0052] In a battery cell, it is generally necessary to conduct a pressure-resistant burst test on the pressure relief component to obtain the bursting pressure of the pressure relief component. At present, the pressure-resistant burst test is generally carried out after the battery cell is assembled. That is, by drilling a hole in the pressure relief component, connecting an external pipe, and introducing gas into the battery cell through the pipe until the pressure relief mechanism of the pressure relief component is actuated, and the bursting pressure of the pressure relief component is obtained by measuring the peak pressure inside the battery cell. This test method is complicated to operate, and the welding strength of the shell and the end cover will affect the test quality. If the welding strength of the shell and the end cover is insufficient, it is difficult to obtain the accurate bursting pressure of the pressure relief component. Therefore, the quality of the pressure-resistant burst test of the pressure relief component is currently poor, and it is difficult to accurately obtain the bursting pressure of the pressure relief component.

[0053] In order to solve the problem of poor quality of pressure-resistant burst test of pressure relief components, an embodiment of the present application provides a pressure-resistant burst test fixture, which includes a first component and a second component, wherein the first component is provided with an entry channel, and the second component is provided with a discharge channel, wherein the second component and the first component are used to cooperate to clamp the first wall portion of the pressure relief component, and the discharge channel is used to discharge the fluid medium flowing through the first wall portion from the entry channel when the pressure relief mechanism of the first wall portion is actuated. The pressure-resistant burst test fixture of this structure is simple in structure, and when performing a burst test on the pressure relief component, the first component and the second component can directly act on both sides of the first wall portion of the pressure relief component, which can simplify the test process and improve the quality of the pressure-resistant burst test of the pressure relief component.

[0054] The pressure-resistant burst test tool described in the embodiment of the present application can be used to test the burst pressure of the pressure relief component of a battery cell.

[0055] Among them, the battery cells can be cylindrical battery cells, prismatic battery cells, soft-pack battery cells or battery cells of other shapes. The prismatic battery cells can be triangular prism battery cells, quadrangular prism battery cells, pentagonal prism battery cells, hexagonal prism battery cells, etc. The quadrangular prism battery cells can be square shell battery cells, blade-shaped battery cells, etc.

[0056] Please refer to Figure 1 , Figure 1 This is an exploded view of a battery cell 20 provided in some embodiments of the present application. The battery cell 20 may include a housing 201 and an electrode assembly 203 , wherein the electrode assembly 203 is accommodated in the housing 201 .

[0057] The housing 201 may include a shell 2011 and an end cover 2012 , wherein the shell 2011 has an opening and the end cover 2012 closes the opening of the shell 2011 .

[0058] The housing 2011 is a component for accommodating the electrode assembly 203. The housing 2011 may be a hollow structure with an opening formed at one end, or a hollow structure with openings formed at two opposite ends. The housing 2011 may be in various shapes, such as a cylindrical shape, a rectangular parallelepiped shape, etc. The housing 2011 may be made of various materials, such as copper, iron, aluminum, steel, aluminum alloy, etc.

[0059] The end cap 2012 is a component that closes the opening of the shell 2011 to isolate the internal environment of the battery cell 20 from the external environment. The end cap 2012 and the shell 2011 together define a receiving space for accommodating the electrode assembly 203, the electrolyte and other components. The end cap 2012 can be connected to the shell 2011 by welding or crimping to close the opening of the shell 2011. The shape of the end cap 2012 can be adapted to the shape of the shell 201. For example, the shell 2011 is a rectangular parallelepiped structure, and the end cap 2012 is a rectangular plate structure adapted to the shell 201. For another example, the shell 2011 is cylindrical, and the end cap 2012 is a circular plate structure adapted to the shell 2011. The material of the end cap 2012 can also be a variety of materials, such as copper, iron, aluminum, steel, aluminum alloy, plastic, etc. The material of the end cap 2012 and the shell 2011 can be the same or different.

[0060] In the embodiment where the housing 2011 is opened at one end, one end cap 2012 may be provided. In the embodiment where the housing 2011 is opened at two opposite ends, two end caps 2012 may be provided, and the two end caps 2012 respectively close the two openings of the housing 2011, and the two end caps 2012 and the housing 2011 together define a receiving space.

[0061] The battery cell 20 may further include an electrode terminal 204, which is disposed on the housing 201 and is used to electrically connect to the tab of the electrode assembly 203 to input or output the electrical energy of the battery cell 20. The electrode terminal 204 may be disposed on the shell 2011 of the housing 201, or may be disposed on the end cover 2012 of the housing 201. The electrode terminal 204 may be directly connected to the tab, for example, the electrode terminal 204 is welded to the tab. The electrode terminal 204 may also be indirectly connected to the tab, for example, the electrode terminal 204 is indirectly connected to the tab through a current collecting member. The current collecting member may be a metal conductor, for example, copper, iron, aluminum, steel, aluminum alloy, etc.

[0062] In the battery cell 20 , the pressure relief component 202 may be the end cover 2012 , the pressure relief component 202 may also be the shell 2011 , or the pressure relief component 202 may be a component installed on the end cover 2012 or the shell 2011 .

[0063] In some embodiments, the pressure relief component 202 may include a first wall portion 2021 , the first wall portion 2021 is provided with a pressure relief mechanism 2022 , and the pressure relief mechanism 2022 is configured to be actuated when the internal pressure of the battery cell 20 reaches a threshold value to release the pressure inside the battery cell 20 .

[0064] The first wall portion 2021 may be a plate-like structure. In the embodiment where the end cover 2012 is used as the pressure relief component 202, the end cover 2012 may be the first wall portion 2021; in the embodiment where the housing 2011 is used as the pressure relief component 202, any wall portion in the housing 2011 may be the first wall portion 2021, for example, the housing 2011 is a hollow structure with an opening formed at one end, and the wall portion of the housing 2011 opposite to the opening is the first wall portion 2021; in the embodiment where the pressure relief component 202 is a component installed on the end cover 2012 or the housing 2011, the pressure relief component 202 may be the first wall portion 2021.

[0065] The pressure relief mechanism 2022 may be a weak portion of the first wall portion 2021, and the weak portion may be formed by providing a pressure relief groove on the first wall portion 2021 to form the pressure relief mechanism 2022. The pressure relief groove may be a groove extending along a closed track, such as an annular groove; the pressure relief groove may also be a groove extending along a non-closed track, such as a linear groove, an H-shaped groove, a U-shaped groove, a Y-shaped groove, an arc-shaped groove, etc.

[0066] In the embodiment of the present application, "actuation" means that the pressure relief mechanism 2022 is in motion or activated to a certain state, so that the internal pressure of the battery cell 20 is released. The action of the pressure relief mechanism 2022 may include but is not limited to: at least a part of the pressure relief mechanism 2022 is broken, shattered, or torn.

[0067] The specific structure of the pressure-resistant bursting test tool 10 is described in detail below with reference to the accompanying drawings.

[0068] Please refer to Figure 2 and Figure 3 , Figure 2 An exploded view of a pressure-resistant burst test tool 10 provided in some embodiments of the present application; Figure 3 for Figure 2 The structural schematic diagram of the pressure-resistance bursting test fixture 10 is shown. The embodiment of the present application provides a pressure-resistance bursting test fixture 10, which is used to test the bursting pressure of a pressure relief component 202, and the pressure relief component 202 includes a first wall portion 2021 provided with a pressure relief mechanism 2022. The pressure-resistance bursting test fixture 10 includes a first component 1 and a second component 2, the first component 1 is provided with an inlet channel 11, the second component 2 is provided with a discharge channel 21, the second component 2 and the first component 1 are used to cooperate to clamp the first wall portion 2021, and the discharge channel 21 is used to discharge the fluid medium flowing from the inlet channel 11 through the first wall portion 2021 when the pressure relief mechanism 2022 is actuated.

[0069] The first component 1 and the second component 2 are two components in the pressure-resistant burst test fixture 10 that can be close to each other, so that the second component 2 and the first component 1 cooperate to clamp the first wall portion 2021. The first component 1 and the second component 2 can be two independent components, and the first component 1 is arranged opposite to the second component 2. When the first wall portion 2021 is clamped by the second component 2 and the first component 1, the second component 2 can be stationary and the first component 1 can move in a direction close to the second component 2, or the first component 1 can be stationary and the second component 2 can move in a direction close to the first component 1, or both the first component 1 and the second component 2 can move to gradually approach each other.

[0070] The first component 1 and the second component 2 may be plate-shaped, elongated, block-shaped, etc. The clamping force of the first component 1 and the second component 2 on the first wall portion 2021 may be provided manually or by a power component. When the first component 1 and the second component 2 clamp the first wall portion 2021, the first component 1 and the first wall portion 2021 may be in a sealed state, which may be achieved by direct contact between the first component 1 and the first wall portion 2021 or by providing a sealing member between the first component 1 and the first wall portion 2021; the second component 2 and the first wall portion 2021 may also be in a sealed state, which may be achieved by direct contact between the second component 2 and the first wall portion 2021 or by providing a sealing member between the second component 2 and the first wall portion 2021.

[0071] The inlet channel 11 may be a hole formed in the first component 1; the outlet channel 21 may be a hole or a groove formed in the second component 2. The fluid medium may be gas, liquid, or the like.

[0072] As an example, the two ends of the inlet channel 11 respectively form a first inlet 1121 and a first outlet, and the first inlet 1121 is formed on the outer surface of the first component 1; the two ends of the outlet channel 21 respectively form a second inlet and a second outlet 2121, and the second outlet 2121 is formed on the outer surface of the second component 2. When the first component 1 and the second component 2 clamp the wall portion, the first outlet faces the first wall portion 2021 and is blocked by the first wall portion 2021, the second inlet faces the first wall portion 2021 and is blocked by the first wall portion 2021, and the first outlet and the second inlet are separated by the first wall portion 2021, so that the inlet channel 11 and the outlet channel 21 are separated by the first wall portion 2021, and the inlet channel 11 and the outlet channel 21 are in a non-connected state. When the pressure relief mechanism 2022 is actuated, a corresponding hole can be formed on the first wall portion 2021, and the inlet channel 11 and the outlet channel 21 are connected through the hole on the first wall portion 2021.

[0073] In the embodiment of the present application, the first wall portion 2021 is clamped by the cooperation of the first component 1 and the second component 2 to fix the first wall portion 2021. After the fluid medium is injected into the inlet channel 11 of the first component 1, the pressure in the inlet channel 11 will gradually increase until the pressure in the inlet channel 11 reaches the bursting pressure of the pressure relief component 202, so that the pressure relief mechanism 2022 is actuated, and the fluid medium in the inlet channel 11 will flow through the first wall portion 2021 and be discharged through the discharge channel 21 of the second component 2. In this process, the peak pressure in the inlet channel 11 is the bursting pressure of the pressure relief component 202. The pressure-resistant bursting test fixture 10 of this structure is simple in structure. When the pressure relief component 202 is subjected to a bursting test, the first component 1 and the second component 2 can directly act on both sides of the first wall portion 2021 of the pressure relief component 202, which can simplify the test process and improve the quality of the pressure-resistant bursting test of the pressure relief component 202.

[0074] During the test, a fluid medium providing device may be connected to the first inlet port 1121, and a fluid medium may be provided to the inlet channel 11 through the fluid medium providing device. The fluid medium providing device may be a gas supply device to provide gas to the inlet channel 11. Of course, the gas supply device may be a device with a pressure measuring function, and then the peak gas pressure in the inlet channel 11 during the test may be measured through the gas supply device, and then the bursting pressure of the pressure relief component 202 may be obtained; a pressure sensor may also be provided in the inlet channel 11, and the peak gas pressure in the inlet channel 11 during the test may be measured through the pressure sensor, and then the bursting pressure of the pressure relief component 202 may be obtained.

[0075] In some embodiments, please refer to Figure 4 and Figure 5 , Figure 4 for Figure 3A partial enlarged view of the middle A; Figure 5 for Figure 3 The first component 1 is shown as a schematic structural diagram. The first component 1 has a first clamping surface 12, and the first clamping surface 12 is used to abut against the first wall portion 2021. The entry channel 11 includes a first avoidance cavity 111, and the first avoidance cavity 111 forms a first opening 1111 on the first clamping surface 12, and the first avoidance cavity 111 is used to avoid the pressure relief mechanism 2022.

[0076] The first clamping surface 12 is a surface of the first component 1 facing the second component 2 and used to abut against the first wall portion 2021. The first clamping surface 12 may be a plane or a curved surface. The first clamping surface 12 may be an end surface of the first component 1 close to the second component 2. When the first component 1 and the second component 2 clamp the first wall portion 2021, the first clamping surface 12 may directly abut against the first wall portion 2021, that is, the first clamping surface 12 is in direct contact with the first wall portion 2021; the first clamping surface 12 may also indirectly abut against the first wall portion 2021, for example, the first clamping surface 12 indirectly abuts against the first wall portion 2021 through a sealing member.

[0077] A part of the entry channel 11 may be used as the first avoidance chamber 111, or the entire entry channel 11 may be used as the first avoidance chamber 111. The first avoidance chamber 111 may be in various shapes, such as cylindrical, prismatic, etc. The first opening 1111 may also be in various shapes, for example, the first opening 1111 is circular, polygonal, etc. The first opening 1111 may serve as the first discharge port of the entry channel 11. When the first component 1 and the second component 2 clamp the first wall portion 2021, the projection of the pressure relief mechanism 2022 along the thickness direction of the first wall portion 2021 may be located in the first avoidance chamber 111, so as to realize the avoidance function of the first avoidance chamber 111 on the pressure relief mechanism 2022.

[0078] In this embodiment, the provision of the first avoidance chamber 111 can reduce the influence of the first component 1 on the strength of the pressure relief mechanism 2022 when squeezing the first wall portion 2021, thereby reducing the risk of premature actuation of the pressure relief mechanism 2022 during the test, resulting in inaccurate bursting pressure of the tested pressure relief component 202.

[0079] In some embodiments, please refer to Figure 4 and Figure 5 The pressure-resistant bursting test fixture 10 further includes a first seal 3 , which is disposed on the first component 1 , and is used to seal the gap between the first clamping surface 12 and the first wall portion 2021 .

[0080] The first seal 3 may be an annular seal ring, or may include a plurality of seal segments that are separately disposed, and the plurality of seal segments are arranged circumferentially along the first opening 1111. The first seal 3 may at least partially protrude from the first clamping surface 12. The first seal 3 may be disposed on the first clamping surface 12 of the first component 1, so that the first seal 3 entirely protrudes from the first clamping surface 12; or a portion of the first seal 3 may be embedded in the first component 1, so that a portion of the first seal 3 protrudes from the first clamping surface 12. The first seal 3 may be made of a variety of materials, such as rubber, plastic, and plastic.

[0081] During the test, when the first component 1 and the second component 2 clamp the first wall portion 2021, if the first seal 3 completely protrudes from the first clamping surface 12, the first seal 3 may be completely located between the first clamping surface 12 and the first wall portion 2021, so that the first clamping surface 12 is not in contact with the first wall portion 2021; if a portion of the first seal 3 is embedded in the first component 1, only a portion of the first seal 3 may be located between the first clamping surface 12 and the first wall portion 2021, so that the first clamping surface 12 is not in contact with the first wall portion 2021, or the first seal 3 may be deformed after being subjected to the pressure of the first wall portion 2021, so that the first seal 3 is completely embedded in the first component 1, so that the first clamping surface 12 is in contact with the first wall portion 2021.

[0082] In this embodiment, the provision of the first seal 3 can improve the sealing performance between the first component 1 and the first wall portion 2021, reduce the risk of the fluid medium entering the channel 11 leaking through the gap between the first clamping surface 12 and the first wall portion 2021 during the test, and further improve the pressure-resistant burst test quality of the pressure relief component 202.

[0083] In some embodiments, please refer to Figure 6-Figure 10 , Figure 6 A position relationship diagram of the first sealing member 3 and the first wall portion 2021 provided in some embodiments of the present application; Figure 7 A position relationship diagram of the first sealing member 3 and the first wall portion 2021 provided in some other embodiments of the present application; Figure 8 A position relationship diagram of the first sealing member 3 and the first wall portion 2021 provided in some other embodiments of the present application; Fig. 9 A position relationship diagram of the first sealing member 3 and the first wall portion 2021 provided in some further embodiments of the present application;

[0084] Fig.10 1 is an exploded view of a pressure-resistant burst test tool 10 provided in some other embodiments of the present application. The first sealing member 3 is an annular structure, and the first sealing member 3 surrounds the first opening 1111 ( Figure 5 ) settings.

[0085] The first sealing member 3 is a sealing ring, and the first sealing member 3 surrounds the outer side of the first opening 1111 , that is, the first opening 1111 is located on the inner side of the first sealing member 3 .

[0086] The first sealing member 3 extends along a closed track to form an annular structure. The closed track may be circular, rectangular or the like.

[0087] As an example, the first seal 3 includes a plurality of first sealing segments formed in one piece, and the plurality of first sealing segments are connected end to end in sequence to form an annular structure. At least one first sealing segment may extend along a straight trajectory; at least one first sealing segment may also extend along a non-straight trajectory, for example, at least one first sealing segment extends along an arc trajectory.

[0088] exist Figure 6 In the illustrated embodiment, the first wall portion 2021 is provided with a pressure relief groove to form a corresponding pressure relief mechanism 2022, and the pressure relief groove is H-shaped. There are four first sealing sections in the first sealing member 3, two of which are straight grooves, and the two straight grooves are arranged in parallel, and the other two first sealing sections are arc grooves, and the two arc grooves are arranged oppositely, and the arc groove connects the two straight grooves and is tangent to the two straight grooves.

[0089] exist Figure 7 In the illustrated embodiment, the first wall portion 2021 is provided with a pressure relief groove to form a corresponding pressure relief mechanism 2022, and the pressure relief groove is H-shaped. There are four first sealing sections in the first sealing member 3, and the four first sealing sections are all linear grooves, and the four linear grooves are connected end to end in sequence to form a rectangular ring.

[0090] exist Figure 8 In the illustrated embodiment, the first wall portion 2021 is provided with a pressure relief groove to form a corresponding pressure relief mechanism 2022, and the pressure relief groove extends along a closed trajectory, that is, the pressure relief groove is an annular groove. There are four first sealing sections in the first sealing member 3, two of which are linear grooves, and the two linear grooves are arranged in parallel, and the other two first sealing sections are arc grooves, and the two arc grooves are arranged oppositely, and the arc groove connects the two linear grooves and is tangent to the two linear grooves.

[0091] exist Fig. 9 In the illustrated embodiment, the first wall portion 2021 is provided with a pressure relief groove to form a corresponding pressure relief mechanism 2022, and the pressure relief groove extends along a closed track, that is, the pressure relief groove is an annular groove. There are four first sealing sections in the first sealing member 3, and the four first sealing sections are all linear grooves, and the four linear grooves are connected end to end in sequence to form a rectangular ring.

[0092] In this embodiment, the annular first sealing member 3 has a simple structure, is easy to form, has good economy, and can well achieve sealing between the first component 1 and the first wall portion 2021 .

[0093] In some embodiments, please refer to Figure 4 and Figure 5 The first clamping surface 12 is provided with a first limiting groove 121 , and at least a portion of the first sealing member 3 is accommodated in the first limiting groove 121 .

[0094] The first limiting groove 121 is recessed from the first clamping surface 12 in a direction away from the second component 2. The first sealing member 3 can be completely accommodated in the first limiting groove 121, or only a part of it can be accommodated in the first limiting groove 121. The first sealing member 3 and the first limiting groove 121 can form a clearance fit, a transition fit, or an interference fit.

[0095] As an example, the first limiting groove 121 is an annular groove. Along the depth direction of the first limiting groove 121 , the first sealing component 3 is only partially accommodated in the first limiting groove 121 , and the first sealing component 3 forms an interference fit with the first limiting groove 121 .

[0096] In this embodiment, the first limiting groove 121 limits the first sealing member 3 , thereby reducing the difficulty of installing the first sealing member 3 .

[0097] In some embodiments, please refer to Figure 5 The entry channel 11 may further include a first channel 112 , one end of the first channel 112 extends to a cavity wall surface of the first avoidance cavity 111 opposite to the first opening 1111 , and the other end of the first channel 112 extends to an outer surface of the first component 1 .

[0098] The cavity wall surface of the first avoidance cavity 111 opposite to the first opening 1111 is a first cavity wall surface 1112 , and one end of the first channel 112 extends to the first cavity wall surface 1112 , so that the first channel 112 is in communication with the first avoidance cavity 111 .

[0099] The cross section of the first channel 112 may be circular, polygonal, etc., and the cross section of the first avoidance cavity 111 may be circular, polygonal, etc. The first channel 112 may extend along a straight line or a non-straight line. Figure 5 In the illustrated embodiment, the first channel 112 is generally L-shaped.

[0100] The other end of the first channel 112 may form a first inlet 1121 on the outer surface of the first component 1 . During testing, the fluid medium may enter the first channel 112 from the first inlet 1121 , and then enter the first avoidance cavity 111 through the first channel 112 .

[0101] In this embodiment, the cross-section of the first channel 112 can be made smaller than the cross-section of the first avoidance cavity 111, which is beneficial to improving the strength of the first component 1 on the one hand, and is convenient for entering the channel 11 and connecting with the fluid medium providing device on the other hand.

[0102] In some embodiments, please refer to Figure 4 and Fig.10 , Fig.10 for Figure 3 The second component 2 is shown as a schematic structural diagram. The second component 2 has a second clamping surface 22, and the second clamping surface 22 is used to abut against the first wall portion 2021. The discharge channel 21 includes a second avoidance cavity 211, and the second avoidance cavity 211 forms a second opening 2111 on the second clamping surface 22, and the second avoidance cavity 211 is used to avoid the pressure relief mechanism 2022.

[0103] The second clamping surface 22 is the surface of the second component 2 facing the first component 1 and used to abut against the first wall 2021. The second clamping surface 22 can be a flat surface or a curved surface. When the first component 1 and the second component 2 clamp the first wall 2021, the second clamping surface 22 can directly abut against the first wall 2021, that is, the second clamping surface 22 is in direct contact with the first wall 2021; the second clamping surface 22 can also abut against the first wall 2021 indirectly, for example, the second clamping surface 22 indirectly abuts against the first wall 2021 through a sealing member. As an example, in Fig.10 In the illustrated embodiment, the second clamping surface 22 is an end surface of the second component 2 close to one end of the first component 1 .

[0104] A part of the discharge channel 21 may be used as the second avoidance chamber 211, or the entire discharge channel 21 may be used as the second avoidance chamber 211. The second avoidance chamber 211 may be in various shapes, such as cylindrical, prismatic, etc. The second opening 2111 may also be in various shapes, for example, the second opening 2111 is circular, polygonal, etc. The second opening 2111 may serve as a second entrance to the discharge channel 21. When the first component 1 and the second component 2 clamp the first wall portion 2021, the projection of the pressure relief mechanism 2022 along the thickness direction of the first wall portion 2021 may be located in the second avoidance chamber 211, so as to realize the avoidance function of the second avoidance chamber 211 on the pressure relief mechanism 2022.

[0105] In this embodiment, the provision of the second avoidance cavity 211 can reduce the influence of the second component 2 on the strength of the pressure relief mechanism 2022 when squeezing the first wall portion 2021, and reduce the risk of premature actuation of the pressure relief mechanism 2022 during the test, which leads to inaccurate bursting pressure of the pressure relief component 202. In addition, after the pressure relief mechanism 2022 is actuated, a part of the first wall portion 2021 may be turned over, and the first avoidance cavity 111 may avoid the part of the first wall portion 2021 that is turned outward, thereby increasing the pressure relief area of ​​the first wall portion 2021 and improving the accuracy of the bursting pressure of the pressure relief component 202 tested.

[0106] In some embodiments, please refer to Figure 4 and Fig.10The pressure-resistant bursting test fixture 10 further includes a second seal 4 , which is disposed on the second component 2 , and is used to seal the gap between the second clamping surface 22 and the first wall portion 2021 .

[0107] The second seal 4 may be an annular seal ring, or may include a plurality of seal segments that are separately disposed, and the plurality of seal segments are arranged circumferentially along the second opening 2111. The second seal 4 may at least partially protrude from the second clamping surface 22. The second seal 4 may be disposed on the second clamping surface 22 of the second component 2, so that the second seal 4 entirely protrudes from the second clamping surface 22; or a portion of the second seal 4 may be embedded in the second component 2, so that a portion of the second seal 4 protrudes from the second clamping surface 22. The second seal 4 may be made of a variety of materials, such as rubber, plastic, or plastic.

[0108] During the test, when the first component 1 and the second component 2 clamp the first wall portion 2021, if the second seal 4 completely protrudes from the second clamping surface 22, the second seal 4 may be completely located between the second clamping surface 22 and the first wall portion 2021, so that the second clamping surface 22 is not in contact with the first wall portion 2021; if a portion of the second seal 4 is embedded in the second component 2, only a portion of the second seal 4 may be located between the second clamping surface 22 and the first wall portion 2021, so that the second clamping surface 22 is not in contact with the first wall portion 2021, or the second seal 4 may be deformed after being subjected to the pressure of the first wall portion 2021, so that the second seal 4 is completely embedded in the second component 2, so that the second clamping surface 22 is in contact with the first wall portion 2021.

[0109] In this embodiment, the provision of the second seal 4 can improve the sealing performance between the second component 2 and the first wall portion 2021 and reduce the risk of fluid medium leaking through the gap between the second clamping surface 22 and the first wall portion 2021 during testing.

[0110] In some embodiments, the second sealing member 4 is an annular structure, and the second sealing member 4 is disposed around the second opening 2111 .

[0111] The second sealing member 4 is a sealing ring, and the second sealing member 4 surrounds the outer side of the second opening 2111 , that is, the second opening 2111 is located at the inner side of the second sealing member 4 .

[0112] The second sealing member 4 extends along a closed track to form an annular structure. The closed track may be circular, rectangular or the like.

[0113] As an example, the second sealing member 4 includes a plurality of second sealing segments formed in one piece, and the plurality of second sealing segments are connected end to end in sequence to form an annular structure. At least one second sealing segment may extend along a straight trajectory; at least one second sealing segment may also extend along a non-straight trajectory, for example, at least one second sealing segment extends along an arc trajectory.

[0114] In this embodiment, the annular second sealing member 4 has a simple structure and can well achieve sealing between the second component 2 and the first wall portion 2021 .

[0115] In some embodiments, please refer to Figure 4 and Fig.10 The second clamping surface 22 is provided with a second limiting groove 221 , and at least a portion of the second sealing member 4 is accommodated in the second limiting groove 221 .

[0116] The second limiting groove 221 is recessed from the second clamping surface 22 in a direction away from the first component 1. The second sealing member 4 can be completely accommodated in the second limiting groove 221, or only a part of it can be accommodated in the second limiting groove 221. The second sealing member 4 and the second limiting groove 221 can form a clearance fit, a transition fit, or an interference fit.

[0117] As an example, the second limiting groove 221 is an annular groove. Along the depth direction of the second limiting groove 221 , the second sealing component 4 is only partially accommodated in the second limiting groove 221 , and the second sealing component 4 forms an interference fit with the second limiting groove 221 .

[0118] In this embodiment, the second limiting groove 221 limits the second sealing member 4 , thereby reducing the difficulty of installing the second sealing member 4 .

[0119] In some embodiments, please refer to Fig.10 The discharge channel 21 may further include a second channel 212 , one end of which extends to a cavity wall surface of the second avoidance cavity 211 opposite to the second opening 2111 , and the other end of the second channel 212 extends to an outer surface of the second component 2 .

[0120] The cavity wall surface of the second avoidance cavity 211 opposite to the second opening 2111 is a second cavity wall surface 2112 , and one end of the second channel 212 extends to the second cavity wall surface 2112 , so that the second channel 212 is in communication with the second avoidance cavity 211 .

[0121] The cross section of the second channel 212 can be circular, polygonal, etc., and the cross section of the second avoidance cavity 211 can be circular, polygonal, etc. The second channel 212 can extend along a straight track or a non-straight track. Fig.10 In the illustrated embodiment, the second channel 212 is generally L-shaped.

[0122] The other end of the second channel 212 may form a second discharge port 2121 on the outer surface of the second component 2 . During testing, the fluid medium entering the second channel 212 may be discharged to the outside through the second discharge port 2121 .

[0123] In this embodiment, the cross-section of the second channel 212 can be made smaller than the cross-section of the second avoidance cavity 211 , which is beneficial to improving the strength of the second component 2 .

[0124] In some embodiments, please refer to Figure 11-Figure 14 , Fig.11 An exploded view of a pressure-resistant burst test tool 10 provided in some other embodiments of the present application; Fig.12 for Fig.11 The structural schematic diagram of the pressure-resistant burst test tool 10 shown; Fig.13 for Fig.12 A partial enlarged view of point B in the middle; Fig.14 for Fig.12 The schematic diagram of the structure of the second component 2 is shown. The second component 2 includes a base 23 and a limiting portion 24. The base 23 has a second clamping surface 22, and the second clamping surface 22 is used to abut against the first wall portion 2021. The discharge channel 21 is formed in the base 23, and the discharge channel 21 forms a second opening 2111 on the second clamping surface 22. The limiting portion 24 is connected to the base 23, and the limiting portion 24 has an inner side surface 241, which is connected to the second clamping surface 22. The inner side surface 241 and the second clamping surface 22 jointly define a limiting cavity 25, and the limiting cavity 25 is used to accommodate at least a part of the pressure relief component 202, so that the second component 2 and the pressure relief component 202 form a positioning fit.

[0125] The base 23 and the limiting portion 24 can be integrally formed; the base 23 and the limiting portion 24 can also be separately provided and connected, such as by welding. The second clamping surface 22 is the surface of the base 23 facing the second component 2 for abutting against the first wall 2021. The second clamping surface 22 can be the surface of the base 23 closest to the first component 1. The second clamping surface 22 can be a flat surface or a curved surface.

[0126] The second opening 2111 is located at the end of the discharge channel 21, and the second opening 2111 can serve as a second entrance of the discharge channel 21. The limiting cavity 25 is connected to the discharge channel 21 through the second opening 2111. In the embodiment where the discharge channel 21 includes the second avoidance cavity 211, the second avoidance cavity 211 forms a second opening 2111 on the second clamping surface 22.

[0127] The limiting portion 24 protrudes from the second clamping surface 22, and the cross section of the limiting portion 24 can be an annular structure, such as a circular ring, a rectangular ring, etc. If the cross section of the limiting portion 24 is a circular ring structure, the inner side surface 241 of the limiting portion 24 can be cylindrical, and the limiting cavity 25 can be cylindrical; if the cross section of the limiting portion 24 is a rectangular ring structure, the inner side surface 241 of the limiting portion 24 can be rectangular, and the limiting cavity 25 can be rectangular. The second clamping surface 22 of the base 23 and the inner side surface 241 of the limiting portion 24 are both cavity walls of the limiting cavity 25, wherein the second clamping surface 22 is the cavity wall of the limiting cavity 25 opposite to the opening of the limiting cavity 25, and the opening of the limiting cavity 25 is the fourth opening 251.

[0128] It should be noted that in the embodiment where the second component 2 and the first wall portion 2021 are sealed by the second seal 4, a second limiting groove 221 can be provided on the second clamping surface 22 of the base 23 to accommodate the second seal 4 to position the second seal 4.

[0129] In this embodiment, the base 23 and the limiting portion 24 jointly form a limiting cavity 25. During the test, the pressure relief component 202 can form a positioning fit with the limiting cavity 25, so that the pressure relief component 202 can reach the specified position of the second component 2 more quickly, thereby achieving rapid docking of the pressure relief component 202 with the second component 2, and enabling the second component 2 to accurately press against the first wall portion 2021.

[0130] In some embodiments, please refer to Fig.15 , Fig.15 The isometric view of the pressure-resistance bursting test fixture 10 provided in some embodiments of the present application. The pressure-resistance bursting test fixture 10 may further include a driving mechanism 5 configured to drive the first component 1 and the second component 2 to approach each other so that the first component 1 and the second component 2 cooperate to clamp the first wall portion 2021 .

[0131] The driving mechanism 5 is a mechanism for driving the first component 1 and the second component 2 to move closer to each other. The driving mechanism 5 may only drive the second component 2 to move so that the first component 1 and the second component 2 move closer to each other; the driving mechanism 5 may only drive the first component 1 to move so that the first component 1 and the second component 2 move closer to each other; or the first component 1 and the second component 2 are both movable components, and the driving mechanism 5 drives the first component 1 and the second component 2 to move in opposite directions at the same time so that the first component 1 and the second component 2 move closer to each other.

[0132] The driving mechanism 5 can be of various structures, and a motor, a cylinder, or a hydraulic cylinder can be used as a power source in the driving mechanism 5. For example, if the first component 1 is a fixed component, the second component 2 is a movable component, and the power source in the driving mechanism 5 is a motor, the motor can drive the second component 2 to move through a screw-nut transmission structure, so that the first component 1 and the second component 2 are close to each other to clamp the first wall portion 2021.

[0133] In this embodiment, the driving mechanism 5 drives the first component 1 and the second component 2 to approach each other, so that the first component 1 and the second component 2 apply a clamping force to the first wall portion 2021 to improve the sealing performance between the first component 1 and the second component 2 and the pressure relief component 202 .

[0134] In some embodiments, the driving mechanism 5 may include a fixed member 51, a movable member 52, and a driving member 53. The fixed member 51 includes a first connection seat 511, and the movable member 52 is movably disposed on the fixed member 51 along the first direction X. Along the first direction X, the movable member 52 is disposed opposite to the first connection seat 511, and the first component 1 and the second component 2 are disposed opposite to each other and are located between the movable member 52 and the first connection seat 511. The driving member 53 connects the movable member 52 and the fixed member 51, and the driving member 53 is configured to drive the movable member 52 to move along the first direction X so that the movable member 52 is away from or close to the first connection seat 511.

[0135] The driving member 53 is the power source in the driving mechanism 5. As an example, Fig.15 In the illustrated embodiment, the driving member 53 is a cylinder.

[0136] The movable member 52 can move relative to the fixed member 51 along the first direction X. The movable member 52 can change the distance between the movable member 52 and the first connecting seat 511 relative to the fixed member 51 along the first direction X, thereby changing the distance between the first component 1 and the second component 2 to achieve clamping of the first wall portion 2021.

[0137] It should be noted that the first component 1 and the second component 2 can be placed only between the movable part 52 and the first connecting seat 511, so that any one of the first component 1 and the second component 2 only maintains contact with any one of the movable part 52 and the first connecting seat 511, but is not connected together. In this way, when the driving member 53 drives the movable part 52 away from the first connecting seat 511 after the test is completed, the driving mechanism 5 will not drive the first component 1 and the second component 2 to move; it is also possible that one of the first component 1 and the second component 2 is connected to the movable part 52, and the other is connected to the first connecting seat 511. In this way, when the test is completed, when the driving member 53 drives the movable part 52 away from the first connecting seat 511, the driving mechanism 5 will drive the first component 1 and the second component 2 away from each other.

[0138] The first direction X may be the direction of gravity, and the movable member 52 may be located below the first connection seat 511, or the movable member 52 may be located above the first connection seat 511. The first component 1 and the second component 2 are arranged opposite to each other along the first direction X and are located between the movable member 52 and the first connection seat 511. The first component 1 may contact the first connection seat 511, and the second component 2 may contact the movable member 52, or the first component 1 may contact the movable member 52, and the second component 2 may contact the first connection seat 511.

[0139] As an example, in Fig.15 In the illustrated embodiment, the first connection seat 511 is located below the movable member 52 , the first component 1 is in contact with the first connection seat 511 , and the second component 2 is in contact with the movable member 52 .

[0140] In this embodiment, by driving the movable member 52 to approach the first connecting seat 511 through the driving member 53, the first component 1 and the second component 2 can apply a clamping force to the first wall portion 2021. By driving the movable member 52 away from the first connecting seat 511 through the driving member 53, the squeezing force applied by the driving mechanism 5 to the first component 1 and the second component 2 can be removed. The driving mechanism 5 has a simple structure and can continuously apply pressure to the first component 1 and the second component 2. The pressure relief component 202 can be easily removed after the test.

[0141] In some embodiments, the fixing member 51 further includes a second connection seat 512 and a guide member 513. Along the first direction X, the second connection seat 512 is arranged opposite to the first connection seat 511, the movable member 52 is located between the second connection seat 512 and the first connection seat 511, and the driving member 53 connects the second connection seat 512 and the movable member 52. The guide member 513 extends along the first direction X, the guide member 513 connects the second connection seat 512 and the first connection seat 511, and the movable member 52 is slidably connected to the guide member 513.

[0142] The first connection seat 511 and the second connection seat 512 are connected by a guide member 513, and the guide member 513 can guide the movable member 52. The guide members 513 between the first connection seat 511 and the second connection seat 512 can be one, two, three, four or more. The movable member 52 and the guide member 513 can be slidably connected in a variety of ways. For example, the movable member 52 is provided with a through hole that cooperates with the guide member 513; for another example, the guide member 513 is provided with a slide groove, and the movable member 52 has a slider that cooperates with the slide groove.

[0143] The driving member 53 may be disposed between the second connecting base 512 and the movable member 52 , and connect the second connecting base 512 and the movable member 52 . The number of the driving member 53 may be one, two, three or more.

[0144] As an example, the second connection seat 512, the first connection seat 511 and the movable member 52 are all plate-like members. The second connection seat 512 is located above the first connection seat 511, and the movable seat is located between the second connection seat 512 and the first connection seat 511. The guide member 513 is cylindrical, and there are four guide members 513. Through holes are provided at the four corners of the movable member 52, and the four guide members 513 are respectively penetrated through the four through holes. Two driving members 53 are provided between the second connection seat 512 and the movable member 52. The driving member 53 is a cylinder, and the cylinder body of the cylinder is connected to the second connection seat 512, and the piston rod of the cylinder is connected to the movable member 52.

[0145] In this embodiment, by setting a guide member 513 between the first connecting seat 511 and the second connecting seat 512 and making the movable member 52 slidably connected to the guide member 513, the stability of the movable member 52 moving along the first direction X can be improved to apply pressure to the first component 1 and the second component 2 more evenly.

[0146] Please refer to Fig.16 and Fig.17 , Fig.16 An exploded diagram of a pressure-resistant burst testing system 100 provided in some embodiments of the present application; Fig.17 for Fig.16 The assembly diagram of the pressure-resistance burst test system 100 is shown. The embodiment of the present application provides a pressure-resistance burst test system 100, including a pressure relief component 202 and a pressure-resistance burst test fixture 10 provided in any of the above embodiments. The pressure relief component 202 includes a first wall portion 2021 provided with a pressure relief mechanism 2022. The second component 2 and the first component 1 cooperate to clamp the first wall portion 2021.

[0147] In this embodiment, the pressure relief component 202 may be the end cover 2012 of the battery cell 20 , or the shell 2011 of the battery cell 20 , or a component installed on the end cover 2012 or the shell 2011 .

[0148] In some embodiments, Fig.18 for Fig.17 An axonometric view of the housing 2011 is shown; Fig.19 for Fig.18 The pressure relief component 202 is a shell 2011, and the shell 2011 includes a side wall 2023 and a first wall portion 2021. The side wall 2023 is arranged around the first wall portion 2021. The first wall portion 2021 is located at one end of the side wall 2023. The end of the side wall 2023 opposite to the first wall portion 2021 is formed with a third opening 20231 for the first component 1 to enter the interior of the shell 2011; wherein the first component 1 has a first clamping surface 12 ( Figure 5 ), the first component 1 ( Fig.18 and Fig.19At least part of the first component 1 is accommodated in the shell 2011, and the first clamping surface 12 is against the inner surface 20211 of the first wall portion, so that the first component 1 and the shell 2011 form a positioning fit.

[0149] The housing 2011 may be cylindrical or prismatic. Fig.18 and Fig.17 In the illustrated embodiment, the housing 2011 is in a rectangular parallelepiped shape, and the side wall 2023 and the first wall portion 2021 are integrally formed.

[0150] One end of the side wall 2023 forming the third opening 20231 is the open end of the shell 2011. When assembling the battery cell 20, the electrode assembly 203 can enter the shell 2011 through the third opening 20231. When performing a pressure burst test on the shell 2011, the first component 1 can enter the shell 2011 through the third opening 20231 to form a positioning fit with the shell 2011. When the first component 1 forms a positioning fit with the shell 2011, the first clamping surface 12 abuts against the inner surface 20211 of the first wall portion. The first component 1 can be fully accommodated in the shell 2011, or only a portion thereof.

[0151] The inner surface 20211 of the first wall portion is the surface of the first wall portion 2021 in the thickness direction facing the interior of the housing 2011. The first clamping surface 12 abuts against the inner surface 20211 of the first wall portion, and the first clamping surface 12 and the inner surface 20211 of the first wall portion may abut directly or indirectly.

[0152] The positioning fit formed between the first component 1 and the housing 2011 may be a clearance fit, a transition fit or an interference fit.

[0153] In this embodiment, the pressure relief component 202 is a shell 2011. During the test, the first component 1 can be inserted into the shell 2011 and form a positioning fit with the shell 2011, so that the first component 1 can reach the specified position of the first wall portion 2021 more quickly, so that the first component 1 can accurately press against the first wall portion 2021.

[0154] In some embodiments, the second component 2 has a limiting cavity 25 ( Fig.14 The limiting cavity 25 has a fourth opening 251 (shown in FIG. 25 ) for the housing 2011 to enter the limiting cavity 25. Fig.14 At least part of the housing 2011 is accommodated in the limiting cavity 25, and the cavity wall surface of the limiting cavity 25 opposite to the fourth opening 251 abuts against the outer surface 20212 of the first wall portion, so that the second component 2 and the housing 2011 form a positioning fit.

[0155] The outer surface 20212 of the first wall portion is the surface of the first wall portion 2021 facing the outside of the housing 2011 in the thickness direction. The cavity wall surface of the limiting cavity 25 opposite to the fourth opening 251 is the second clamping surface 22 ( Fig.14 As shown in the figure, the second clamping surface 22 may directly abut against the outer surface 20212 of the first wall portion, or the second clamping surface 22 may indirectly abut against the outer surface 20212 of the first wall portion.

[0156] The positioning fit formed between the second component 2 and the housing 2011 may be a clearance fit, a transition fit or an interference fit.

[0157] In this embodiment, the second component 2 has a limiting cavity 25. During the test, the shell 2011 can form a positioning fit with the limiting cavity 25, so that the shell 2011 can reach the specified position of the second component 2 more quickly, thereby realizing the rapid docking of the shell 2011 and the second component 2, so that the second component 2 and the first component 1 can quickly and accurately clamp the first wall portion 2021.

[0158] Please refer to Figure 11-Figure 15 The embodiment of the present application also provides a pressure-resistant burst test fixture 10, which is used to test the burst pressure of the shell 2011 of the battery cell 20, the shell 2011 has an opening, the shell 2011 includes a first wall portion 2021 arranged opposite to the opening, and the first wall portion 2021 is provided with a pressure relief mechanism 2022. The pressure-resistant burst test fixture 10 includes a first component 1, a second component 2, a first seal 3, a second seal 4 and a driving mechanism 5.

[0159] The first component 1 is provided with an inlet channel 11, and the second component 2 is provided with a discharge channel 21. The second component 2 and the first component 1 are used to cooperate to clamp the first wall portion 2021. The discharge channel 21 is used to discharge the fluid medium flowing from the inlet channel 11 through the first wall portion 2021 when the pressure relief mechanism 2022 is actuated.

[0160] The first component 1 is used to form a positioning match with the housing 2011, and the first component 1 has a first clamping surface 12, and the first clamping surface 12 is used to abut against the first wall portion 2021. The entry channel 11 includes a first avoidance cavity 111 and a first channel 112. The first avoidance cavity 111 forms a first opening 1111 on the first clamping surface 12, and the first avoidance cavity 111 is used to avoid the pressure relief mechanism 2022. One end of the first channel 112 extends to the cavity wall surface of the first avoidance cavity 111 opposite to the first opening 1111, and the other end of the first channel 112 extends to the outer surface of the first component 1.

[0161] The first seal 3 is disposed on the first component 1, and is used to seal the gap between the first clamping surface 12 and the first wall portion 2021. The first seal 3 is an annular structure, and is disposed around the first opening 1111. The first clamping surface 12 is provided with a first limiting groove 121, and the first limiting groove 121 is an annular groove, and a portion of the first seal 3 is accommodated in the first limiting groove 121.

[0162] The second component 2 includes a base 23 and a limiting portion 24 . The base 23 has a second clamping surface 22 . The second clamping surface 22 is used to abut against the first wall portion 2021 . The discharge channel 21 is formed in the base 23, and the discharge channel 21 includes a second avoidance cavity 211 and a second channel 212. The second avoidance cavity 211 forms a second opening 2111 on the second clamping surface 22. The second avoidance cavity 211 is used to avoid the pressure relief mechanism 2022. One end of the second channel 212 extends to the cavity wall surface of the second avoidance cavity 211 opposite to the second opening 2111, and the other end of the second channel 212 extends to the outer surface of the base 23. The limiting portion 24 is connected to the base 23, and the limiting portion 24 has an inner side surface 241. The inner side surface 241 is connected to the second clamping surface 22, and the inner side surface 241 and the second clamping surface 22 jointly define a limiting cavity 25. The limiting cavity 25 is connected to the second avoidance cavity 211, and the limiting cavity 25 is used to accommodate at least a portion of the pressure relief component 202 so that the second component 2 and the pressure relief component 202 form a positioning fit.

[0163] The second sealing member 4 is disposed on the second component 2, and is used to seal the gap between the second clamping surface 22 and the first wall portion 2021. The second sealing member 4 is an annular structure, and the second sealing member 4 is disposed around the second opening 2111. The second clamping surface 22 is provided with a second limiting groove 221, and the second limiting groove 221 is an annular groove, and at least a portion of the second sealing member 4 is accommodated in the second limiting groove 221.

[0164] The driving mechanism 5 includes a fixed member 51, a movable member 52 and a driving member 53. The fixed member 51 includes a first connection seat 511, a second connection seat 512 and a guide member 513. The second connection seat 512 is arranged opposite to the first connection seat 511 along the first direction X. The movable member 52 is located between the second connection seat 512 and the first connection seat 511. The guide member 513 extends along the first direction X. The guide member 513 connects the second connection seat 512 and the first connection seat 511. The movable member 52 is slidably connected to the guide member 513. The driving member 53 is a cylinder. The driving member 53 connects the movable member 52 and the second connection seat 512. The driving member 53 is configured to drive the movable member 52 to move along the first direction X so that the movable member 52 is away from or close to the first connection seat 511. The first component 1 and the second component 2 are arranged opposite to each other along the first direction X and are located between the movable member 52 and the first connection seat 511.

[0165] In such a pressure-resistant burst test fixture 10, the provision of the first sealing member 3 improves the sealing between the first component 1 and the housing 2011, and the provision of the second sealing member 4 improves the sealing between the second component 2 and the housing 2011. During the test, the first component 1 can be inserted into the housing 2011 to form a positioning match with the housing 2011, and the housing 2011 can be inserted into the limiting cavity 25 of the second component 2 to form a positioning match, and the movable member 52 can be driven to move by the driving member 53, so that the movable member 52 and the first connecting seat 511 can continuously apply pressure to the first component 1 and the second component 2, thereby making the first component 1 and the second component 2 cooperate to clamp the first wall 2021 of the housing 2011. During the test, a fluid medium can be injected into the inlet channel 11 of the first component 1 until the pressure in the inlet channel 11 reaches the bursting pressure of the pressure relief component 202, so that the pressure relief mechanism 2022 is actuated, and the fluid medium in the inlet channel 11 will flow through the first wall portion 2021 and be discharged through the discharge channel 21 of the second component 2. During this process, the peak pressure in the inlet channel 11 is the bursting pressure of the pressure relief component 202. The pressure-resistant bursting test fixture 10 of this structure is simple in structure, can simplify the test process, and improve the pressure-resistant bursting test quality of the housing 2011.

[0166] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0167] The above embodiments are only used to illustrate the technical solution of the present application and are not used to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pressure-resistant burst test tool, used for testing the burst pressure of a pressure relief component, wherein the pressure relief component comprises a first wall portion provided with a pressure relief mechanism, characterized in that: The pressure burst test tooling comprises: A first component is provided with an entry passage; The second component is provided with a discharge channel. The second component and the first component are used to cooperate and clamp the first wall portion. The discharge channel is used to discharge the fluid medium flowing from the inlet channel through the first wall portion when the pressure relief mechanism is actuated.

2. The pressure-resistant burst test tool as claimed in claim 1, characterized in that: The first component has a first clamping surface, and the first clamping surface is used to abut against the first wall portion; The entry channel comprises a first avoidance cavity, the first avoidance cavity forms a first opening on the first clamping surface, and the first avoidance cavity is used to avoid the pressure relief mechanism.

3. The pressure-resistant burst test tool as claimed in claim 2, characterized in that: The pressure-resistant burst test tool also includes: The first sealing member is disposed on the first component, and is used for sealing a gap between the first clamping surface and the first wall portion.

4. The pressure-resistant burst test tool as claimed in claim 3, characterized in that: The first sealing member is an annular structure, and the first sealing member is disposed around the first opening.

5. The pressure-resistant burst test tool as claimed in claim 3, characterized in that: The first clamping surface is provided with a first limiting groove, and at least a portion of the first sealing member is accommodated in the first limiting groove.

6. The pressure burst test tool as claimed in claim 2, characterized in that: The entry channel further includes a first channel, one end of which extends to a cavity wall surface of the first avoidance cavity opposite to the first opening, and the other end of the first channel extends to an outer surface of the first component.

7. The pressure burst test tool as claimed in claim 1, characterized in that: The second component has a second clamping surface, and the second clamping surface is used to abut against the first wall portion; The discharge channel includes a second avoidance cavity, the second avoidance cavity forms a second opening on the second clamping surface, and the second avoidance cavity is used to avoid the pressure relief mechanism.

8. The pressure burst test tool as claimed in claim 7, characterized in that: The pressure-resistant burst test tool also includes: The second sealing member is disposed on the second component, and is used for sealing the gap between the second clamping surface and the first wall portion.

9. The pressure burst test tool as claimed in claim 8, characterized in that: The second sealing member is an annular structure, and the second sealing member is disposed around the second opening.

10. The pressure burst test tool as claimed in claim 8, characterized in that: The second clamping surface is provided with a second limiting groove, and at least a portion of the second sealing member is accommodated in the second limiting groove.

11. The pressure burst test tool as claimed in claim 7, characterized in that: The discharge channel further includes a second channel, one end of which extends to a cavity wall surface of the second avoidance cavity opposite to the second opening, and the other end of the second channel extends to an outer surface of the second component.

12. The pressure burst test tool as claimed in any one of claims 1 to 11, characterized in that: The second component comprises: A base having a second clamping surface, the second clamping surface is used to abut against the first wall portion, the discharge channel is formed in the base, and the discharge channel forms a second opening on the second clamping surface; A limiting portion is connected to the base, and the limiting portion has an inner side surface, the inner side surface is connected to the second clamping surface, and the inner side surface and the second clamping surface jointly define a limiting cavity, and the limiting cavity is used to accommodate at least a portion of the pressure relief component so that the second component and the pressure relief component form a positioning fit.

13. The pressure burst test tool as claimed in any one of claims 1 to 11, characterized in that: The pressure-resistant burst test tool also includes: The driving mechanism is configured to drive the first component and the second component to approach each other so that the first component and the second component cooperate to clamp the first wall portion.

14. The pressure burst test tool as claimed in claim 13, characterized in that: The driving mechanism comprises: The fixing member includes a first connecting seat; A movable member is movably disposed on the fixed member along a first direction, wherein the movable member is disposed opposite to the first connecting seat along the first direction, and the first member and the second member are disposed opposite to each other and are located between the movable member and the first connecting seat; A driving member connects the movable member and the fixed member, and is configured to drive the movable member to move along the first direction so that the movable member moves away from or approaches the first connecting seat.

15. The pressure-resistance burst test tool as claimed in claim 14, characterized in that: The fixing member also includes: a second connecting seat, along the first direction, the second connecting seat is arranged opposite to the first connecting seat, the movable member is located between the second connecting seat and the first connecting seat, and the driving member connects the second connecting seat and the movable member; A guide member extends along the first direction, the guide member connects the second connection seat and the first connection seat, and the movable member is slidably connected to the guide member.

16. A pressure explosion test system, characterized in that: include: The pressure relief component comprises a first wall portion provided with a pressure relief mechanism; According to the pressure-resistant burst testing tool as described in any one of claims 1 to 15, the second component and the first component cooperate to clamp the first wall portion.

17. The pressure burst test system according to claim 16, characterized in that: The pressure relief component is a shell, the shell includes a side wall and the first wall portion, the side wall is arranged around the first wall portion, the first wall portion is located at one end of the side wall, and a third opening is formed at one end of the side wall opposite to the first wall portion for the first component to enter the interior of the shell; The first component has a first clamping surface, at least a portion of the first component is accommodated in the shell, and the first clamping surface abuts against an inner surface of the first wall portion, so that the first component and the shell form a positioning fit.

18. The pressure burst test system according to claim 17, characterized in that: The second component has a limiting cavity, and the limiting cavity has a fourth opening for the shell to enter the limiting cavity; At least a portion of the shell is accommodated in the limiting cavity, and a cavity wall surface of the limiting cavity opposite to the fourth opening abuts against an outer surface of the first wall portion, so that the second component forms a positioning fit with the shell.

Images