Battery thermal abuse and short circuit test box

Abstract

The utility model relates to the field of test boxes, and discloses a battery thermal abuse and short circuit test box which comprises a box body, a test bin with an opening, a pressure relief window communicated with the test bin, a pressure relief through hole communicated with the test bin and a test hole communicated with the test bin, the pressure relief window is used for explosion-proof pressure relief, and the pressure relief through hole is used for pressure relief. The test bin is used for accommodating a to-be-tested battery, and the test hole is configured to pass through a short-circuit wire for performing circuit test on the to-be-tested battery; the explosion door covers the opening; the explosion-proof pressure relief door covers the pressure relief window; and the heating mechanism is arranged in the box body and is used for carrying out heat abuse heating control on the test bin. The device not only can be used for thermal abuse test of the battery, but also can be used for short-circuit test of the battery, so that function integration is realized, and test requirements can be better met.

Description

Technical Field

[0001] This utility model relates to the field of test chamber technology, and in particular to a battery thermal abuse and short circuit test chamber. Background Technology

[0002] Currently, there are various types of test chambers used for battery performance testing, the most common being thermal abuse test chambers and battery short circuit test chambers.

[0003] Specifically, a thermal abuse test chamber is a specialized environmental testing device used to simulate and control extreme temperature conditions to perform thermal abuse tests. In a battery thermal abuse test, a fully charged battery, after stabilizing at room temperature, is placed in a thermal abuse test chamber, and the temperature is increased to 130℃±2℃ at a rate of 5℃ / min±2℃ / min, and maintained at this temperature for 10 minutes before the test is stopped. Then, the battery is observed to see if any dangerous situations such as fire or explosion occur, to verify the battery's safety performance under extreme temperature conditions. A battery short-circuit test chamber can simulate the battery's reaction and performance under short-circuit conditions, evaluating the battery's safety performance. Through testing, changes in key parameters such as temperature, voltage, and current of the battery during a short circuit can be observed, thereby determining whether the battery will experience thermal runaway, explosion, or other dangerous situations, ensuring the battery's safety during use.

[0004] However, these test chambers often have limited functionality. For example, thermal abuse test chambers are mainly used for thermal abuse testing, and battery short-circuit test chambers are mainly used for battery short-circuit testing. Consequently, they fail to adequately meet users' needs for thermal abuse and battery short-circuit testing, as well as their testing requirements for complex test modes.

[0005] Therefore, there is an urgent need to provide a battery thermal abuse and short circuit test chamber that can be used for battery thermal abuse and short circuit testing. Utility Model Content

[0006] Therefore, it is necessary to provide a battery thermal abuse and short circuit test chamber to address the existing problems and to use it for battery thermal abuse and short circuit testing.

[0007] This application provides a battery thermal abuse and short circuit test chamber, which includes:

[0008] The enclosure includes an open test chamber, a pressure relief window communicating with the test chamber, a pressure relief through hole communicating with the test chamber, and a test hole communicating with the test chamber. The pressure relief window is used for explosion-proof pressure relief, the pressure relief through hole is used for pressure relief, the test chamber is used to accommodate the battery under test, and the test hole is configured to allow a short-circuit wire for circuit testing of the battery under test to pass through.

[0009] An explosion-proof door is installed over the opening;

[0010] An explosion-proof pressure relief door is installed over the pressure relief window;

[0011] A heating mechanism, located in the housing, is used for thermal abuse control of the test chamber.

[0012] In some implementations, the battery thermal abuse and short-circuit test chamber also includes:

[0013] The explosion-proof door is hinged to the housing via the hinge;

[0014] An explosion-proof chain, one end of which is connected to the housing and the other end of which is connected to the explosion-proof door.

[0015] In some embodiments, at least one explosion-proof chain is connected to each of the four corners of the explosion-proof door.

[0016] In some embodiments, the explosion-proof door includes an observation window for observing the test chamber.

[0017] In some implementations, the battery thermal abuse and short-circuit test chamber also includes:

[0018] An explosion-proof mesh is detachably installed on one side of the explosion-proof door corresponding to the test chamber.

[0019] In some embodiments, the side of the explosion-proof mesh corresponding to the test chamber is the inner side, and the bottom edge of the inner side is provided with a first limiting member; the inner side also includes two side edges adjacent to the bottom edge, and the side edges are provided with slots extending in the vertical direction, and the top of the slots is open in the vertical direction, and the explosion-proof mesh is inserted into the slots from top to bottom.

[0020] In some embodiments, the heating mechanism includes:

[0021] A heating element, disposed in the housing, is used to heat the test chamber;

[0022] A fan, installed in the housing, is used to agitate the airflow within the test chamber;

[0023] A thermometer is installed in the housing for detecting the temperature of the test chamber;

[0024] The controller is located in the housing and is electrically connected to the heating element, the fan, and the thermometer.

[0025] In some embodiments, the test chamber has multiple arrayed air guide holes inside, the fan is located outside the test chamber and the fan supplies air into the test chamber through the air guide holes, and the heating element is disposed on the path of the fan supplying air to the air guide holes.

[0026] In some implementations, the battery thermal abuse and short-circuit test chamber also includes:

[0027] Four pillars are arranged in an array in the test chamber, and each pillar has multiple insertion holes on its side.

[0028] The support plate has plugs at its four corners, and each plug is detachably inserted into the insertion hole in a one-to-one manner so that the support plate is fixed to the column in a suspended manner.

[0029] In some embodiments, the test chamber includes a first sidewall and a second sidewall adjacent to the opening. The first sidewall and the second sidewall are each provided with a strip-shaped groove extending along the opening direction of the opening. Two columns are respectively installed on the first sidewall and the second sidewall by fasteners connecting the strip-shaped grooves, so that the spacing between the two columns on the first sidewall along the opening direction is adjustable, and the spacing between the two columns on the second sidewall along the opening direction is also adjustable.

[0030] The beneficial effects of this utility model are:

[0031] This utility model discloses a battery thermal abuse and short-circuit test chamber. The chamber includes an open test compartment, a pressure relief window connecting to the test compartment, a pressure relief through-hole connecting to the test compartment, and a test hole connecting to the test compartment. The pressure relief window is used for explosion-proof pressure relief, the pressure relief through-hole is used for pressure relief, the test compartment is used to accommodate the battery under test, and the test hole is configured to allow a short-circuit wire for circuit testing of the battery under test to pass through. An explosion-proof door cover is located at the open compartment; an explosion-proof pressure relief door cover is located at the pressure relief window; a heating mechanism is located in the chamber and is used for thermal abuse heating control of the test compartment. When thermal abuse testing is required, the heating mechanism can be used to perform the thermal abuse test; when a battery short-circuit test is required, the short-circuit wire for circuit testing of the battery under test is passed through the test hole and connected to the battery, and then the battery short-circuit test can be performed. Therefore, it can be used not only for battery thermal abuse testing but also for battery short-circuit testing, achieving functional integration and better meeting testing needs. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0033] Figure 1A three-dimensional schematic diagram of a battery thermal abuse and short circuit test chamber provided for embodiments of this application;

[0034] Figure 2 A perspective view of a battery thermal abuse and short circuit test chamber with the explosion-proof door hidden, provided for an embodiment of this application;

[0035] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0036] Figure 4 Another perspective view of a battery thermal abuse and short circuit test chamber provided for an embodiment of this application;

[0037] Figure 5 A front view of a battery thermal abuse and short circuit test chamber provided for an embodiment of this application;

[0038] Figure 6 A schematic diagram of the circuit connection of the heating mechanism provided for an embodiment of this application;

[0039] Figure 7 A schematic diagram illustrating the insertion and mating of an explosion-proof door and an explosion-proof mesh provided for embodiments of this application;

[0040] Figure 8 A schematic diagram of a carrier disk provided for an embodiment of this application.

[0041] Figure label:

[0042] 1. Enclosure; 11. Test chamber; 111. Opening; 112. Air vent; 113. Slot; 114. Fastener; 12. Pressure relief window; 13. Pressure relief through hole; 14. Test hole;

[0043] 2. Explosion-proof door; 21. Observation window;

[0044] 3. Explosion-proof pressure relief door;

[0045] 4. Heating mechanism; 41. Heating element; 42. Fan; 43. Thermometer; 44. Controller;

[0046] 5. Hinges;

[0047] 6. Explosion-proof chain;

[0048] 7. Explosion-proof mesh;

[0049] 8. First limiting component;

[0050] 9. Slot;

[0051] 10. Column; 101. Insertion hole;

[0052] 100. Support plate; 110. Plug. Detailed Implementation

[0053] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0054] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] In this utility model, unless otherwise explicitly specified and limited, a feature "above" or "below" the second feature may mean that the feature is in direct contact with the second feature or indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature may mean that the feature is directly above or diagonally above the second feature, or simply indicates that the feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "beneath" the second feature may mean that the feature is directly below or diagonally below the second feature, or simply indicates that the feature is at a lower horizontal level than the second feature.

[0058] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0059] refer to Figure 1-8 This application provides a battery thermal abuse and short circuit test chamber, which includes a chamber body 1, an explosion-proof door 2, an explosion-proof pressure relief door 3, and a heating mechanism 4. The chamber body 1 includes a test chamber 11 with an opening 111, a pressure relief window 12 communicating with the test chamber 11, a pressure relief through hole 13 communicating with the test chamber 11, and a test hole 14 communicating with the test chamber 11. The pressure relief window 12 is used for explosion-proof pressure relief, the pressure relief through hole 13 is used for pressure relief, the test chamber 11 is used to accommodate the battery under test, and the test hole 14 is configured to allow a short-circuit wire for circuit testing of the battery under test to pass through. The explosion-proof door 2 covers the opening 111; the explosion-proof pressure relief door 3 covers the pressure relief window 12; and the heating mechanism 4 is disposed in the chamber body 1 for thermal abuse heating control of the test chamber 11.

[0060] When thermal abuse testing is required, the heating mechanism 4 can be used to heat the battery to perform the thermal abuse test. When battery short circuit testing is required, the short circuit wire for circuit testing of the battery under test is passed through the test hole 14 and connected to the battery, and then the battery short circuit test can be performed. Therefore, it can be used not only for battery thermal abuse testing, but also for battery short circuit testing, realizing functional integration and better meeting testing needs.

[0061] In some implementations, reference Figure 1-8 The battery thermal abuse and short circuit test chamber also includes hinges 5 and explosion-proof chains 6. The explosion-proof door 2 is hinged to the chamber body 1 via hinges 5. One end of the explosion-proof chain 6 is connected to the chamber body 1, and the other end of the explosion-proof chain 6 is connected to the explosion-proof door 2. The explosion-proof chain 6 is used to strengthen the connection between the explosion-proof door 2 and the chamber body 1, preventing the explosion-proof door 2 from being blown open by the excessive impact of the battery explosion, thus improving safety.

[0062] In some implementations, reference Figure 1-8 At least one explosion-proof chain 6 is connected to each of the four corners of the explosion-proof door 2 to further improve reliability.

[0063] In some implementations, reference Figure 1-8 The explosion-proof door 2 includes an observation window 21 for observing the test chamber 11, which facilitates observation of the internal situation during the test.

[0064] In some implementations, reference Figure 1-8 The battery thermal abuse and short circuit test chamber also includes an explosion-proof mesh 7. The explosion-proof mesh 7 is detachably installed on one side of the explosion-proof door 2 corresponding to the test chamber 11. The explosion-proof mesh 7 further serves as explosion protection. As a component that is easily damaged, the detachable assembly of the explosion-proof mesh 7 allows for easy replacement of the mesh individually. Furthermore, different strength explosion-proof meshes 7 can be replaced according to different battery explosion intensities to correspondingly improve safety.

[0065] For details, please refer to Figure 1-8 In some embodiments, the side of the explosion-proof mesh 7 corresponding to the test chamber 11 is the inner side, and the bottom edge of the inner side is provided with a first limiting member 8; the inner side also includes two side edges adjacent to the bottom edge, and the side edges are provided with slots 9 extending in the vertical direction, and the top of the slots 9 is open in the vertical direction. The explosion-proof mesh 7 is inserted into the slots 9 from top to bottom. The explosion-proof mesh 7 is installed by inserting it, which can realize quick insertion and quick removal, convenient installation and removal, and save time and effort.

[0066] refer to Figure 1-8 In some embodiments, the heating mechanism 4 includes a heating element 41, a fan 42, a thermometer 43, and a controller 44. The heating element 41 is disposed in the housing 1 and is used to heat the test chamber 11; the fan 42 is disposed in the housing 1 and is used to agitate the airflow inside the test chamber 11; the thermometer 43 is disposed in the housing 1 and is used to detect the temperature of the test chamber 11; the controller 44 is disposed in the housing 1 and is electrically connected to the heating element 41, the fan 42, and the thermometer 43 respectively, thereby enabling it to be used for heating and temperature control during thermal abuse. Specifically, other existing heating mechanisms 4 can also be used.

[0067] In some implementations, reference Figure 1-8 The test chamber 11 has multiple arrayed air guide holes 112 inside. The fan 42 is located outside the test chamber 11 and blows air into the test chamber 11 through the air guide holes 112. The heating element 41 is set on the path of the fan 42 blowing air into the air guide holes 112, thereby balancing the temperature of different positions inside the test chamber 11 and achieving the effect of rapid and uniform heating and temperature control.

[0068] refer to Figure 1-8In some embodiments, the battery thermal abuse and short-circuit test chamber also includes four columns 10 and a support tray 100. The four columns 10 are arranged in an array in the test chamber 11, and each column 10 has multiple insertion holes 101 on its side. The support tray 100 has plugs 110 at its four corners, and each plug 110 is detachably inserted into the insertion holes 101 one-to-one, so that the support tray 100 is fixed to the column 10 in a suspended manner. The support tray 100 is detachable, so it can be installed or removed as needed to provide different sizes of storage space for placing batteries, making it convenient to use.

[0069] In some implementations, reference Figure 1-8 The test chamber 11 includes a first sidewall and a second sidewall adjacent to the opening 111. The first and second sidewalls each have a strip-shaped groove 113 extending along the opening direction of the opening 111. Two uprights 10 are respectively mounted on the first and second sidewalls by connecting them to the strip-shaped grooves 9 via fasteners (114). This allows the spacing between the two uprights 10 on the first sidewall and the two uprights 10 on the second sidewall to be adjustable along the opening direction. This enables flexible adjustment of the spacing between the two uprights 10 on the first and second sidewalls according to the size of different types of support plates 100. Specifically, the fasteners 114 can be bolts, inserts, or other accessories that can tightly engage with the strip-shaped grooves 9.

[0070] Explanatory, the dimensions of different types of carrier plates 100 mainly refer to the width of the carrier plate 100 in the opening direction of the opening 111 after it is laid flat.

[0071] Finally, it should be noted that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above embodiments illustrate only one implementation of the present utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present utility model, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be determined by the appended claims.

Claims

1. A battery thermal abuse and short-circuit test chamber, characterized in that, include: The housing (1) includes a test chamber (11) with an opening (111), a pressure relief window (12) communicating with the test chamber (11), a pressure relief through hole (13) communicating with the test chamber (11), and a test hole (14) communicating with the test chamber (11). The pressure relief window (12) is used for explosion-proof pressure relief, the pressure relief through hole (13) is used for pressure relief, the test chamber (11) is used to accommodate the battery under test, and the test hole (14) is configured to pass through a short-circuit wire for circuit testing of the battery under test. An explosion-proof door (2) is installed over the opening (111); An explosion-proof pressure relief door (3) is installed over the pressure relief window (12); A heating mechanism (4) is provided in the housing (1) for heat abuse control of the test chamber (11).

2. The battery thermal abuse and short circuit test chamber according to claim 1, characterized in that, Also includes: Hinges (5), the explosion-proof door (2) is hinged to the housing (1) via the hinges (5); An explosion-proof chain (6) is connected at one end to the housing (1) and at the other end to the explosion-proof door (2).

3. The battery thermal abuse and short-circuit test chamber according to claim 2, characterized in that, At least one explosion-proof chain (6) is connected to each of the four corners of the explosion-proof door (2).

4. The battery thermal abuse and short-circuit test chamber according to claim 1, characterized in that, The explosion-proof door (2) includes an observation window (21) for observing the test chamber (11).

5. The battery thermal abuse and short circuit test chamber according to claim 1, characterized in that, Also includes: The explosion-proof mesh (7) is detachably installed on one side of the explosion-proof door (2) corresponding to the test chamber (11).

6. The battery thermal abuse and short-circuit test chamber according to claim 5, characterized in that, The explosion-proof mesh (7) has an inner side corresponding to the test chamber (11), and a first limiting member (8) is protruding from the bottom edge of the inner side. The inner side also includes two side edges adjacent to the bottom edge. The side edges are provided with slots (9) extending in the vertical direction, and the top of the slots (9) is open in the vertical direction. The explosion-proof mesh (7) is inserted into the slots (9) from top to bottom.

7. The battery thermal abuse and short circuit test chamber according to claim 1, characterized in that, The heating mechanism (4) includes: A heating element (41) is disposed in the housing (1) and is used to heat the test chamber (11); A fan (42) is installed in the housing (1) to agitate the airflow inside the test chamber (11); A thermometer (43) is installed in the housing (1) for detecting the temperature of the test chamber (11); The controller (44) is located in the housing (1) and is electrically connected to the heating element (41), the fan (42), and the thermometer (43).

8. The battery thermal abuse and short circuit test chamber according to claim 7, characterized in that, The test chamber (11) has multiple arrayed air guide holes (112) inside. The fan (42) is located outside the test chamber (11) and the fan (42) sends air into the test chamber (11) through the air guide holes (112). The heating element (41) is arranged on the path of the fan (42) sending air into the air guide holes (112).

9. The battery thermal abuse and short circuit test chamber according to claim 1, characterized in that, Also includes: Four pillars (10) are arranged in an array in the test chamber (11), and each pillar (10) has multiple insertion holes (101) on its side. The support plate (100) has a plug (110) at each of its four corners. Each plug (110) is detachably inserted into the insertion hole (101) in a pair, so that the support plate (100) is fixed to the column (10) in a suspended manner.

10. The battery thermal abuse and short-circuit test chamber according to claim 9, characterized in that, The test chamber (11) includes a first sidewall and a second sidewall adjacent to the opening (111). The first sidewall and the second sidewall are respectively provided with strip grooves (113) extending along the opening direction of the opening (111). The first sidewall and the second sidewall are respectively equipped with two columns (10) by connecting the strip grooves (9) with fasteners (114), so that the interval between the two columns (10) on the first sidewall along the opening direction is adjustable, and the interval between the two columns (10) on the second sidewall along the opening direction is adjustable.

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