Aging test apparatus and its usage method

Abstract

The present invention discloses an aging test device and a method of using the same, which belongs to the technical field of new energy vehicles and is used to test a PCB board in a vehicle-mounted battery pack, including a box body and a heater arranged in the box body, two opposite sides of the box body are provided with door bodies, and a placement rack is arranged inside the box body. The placement rack includes a plurality of layers of placement boards arranged at intervals in the vertical direction, each placement board is provided with a placement position, and the placement boards can be pulled out to the placement position outside the door. The present invention enables each placement board to be pulled out separately when placing the PCB board, and there is no need to reserve space for the hand to extend between the upper and lower adjacent placement boards. It is only necessary to reserve the placement space for the PCB board. Compared with the existing placement rack of the same size, more placement boards can be placed, and more placement positions can be set, and the PCB board can be placed from two doors, thereby increasing the placement speed and significantly improving the test efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to an aging test device and a use method thereof. Background Art

[0002] With the rapid development of new energy vehicles, the number of new energy vehicles is increasing. The on-board battery pack is the core component of new energy vehicles and the power source of new energy vehicles. Therefore, whether the on-board battery pack is qualified is very important.

[0003] In order to prevent bad vehicle battery packs from entering the market, it is necessary to perform aging tests on the PCB boards in the vehicle battery packs to ensure that the BMS (battery management system of the vehicle battery pack) and CSC (battery monitor) can operate stably under various working conditions. However, in the existing aging test device, when testing the PCB board, the first method is to open the door of the aging test device, place the PCB board on the placement rack set inside the aging test device, and test the voltage, current stability, communication and other performances of the PCB board in a high temperature environment (usually 85°C); another method is that the placement rack can be pulled out, and the PCB board is first placed on the placement rack, and then the placement rack is pushed into the aging test device. In either case, the distance between the upper and lower adjacent layers of the placement rack must be large enough, and sufficient space must be reserved between the two layers in the vertical direction to ensure that when the operator places the PCB board on the placement rack, it will not be difficult to place it due to the obstruction of the upper fixed placement board, and the PCB board can be placed smoothly in the placement rack, that is, in addition to reserving a placement space for the PCB board between the upper and lower adjacent layers, an operating space for the operator must also be reserved.

[0004] However, such an arrangement results in a large waste of space, resulting in fewer placement boards that can be set up in the aging test device, which in turn results in a smaller number of PCB boards to be tested that can be placed, and low test efficiency.

[0005] Therefore, there is an urgent need for an aging test device and a method of using the same to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide an aging test device and a method for using the same, so as to solve the technical problem in the prior art that the test device can be provided with fewer placement plates, which leads to a smaller number of vehicle-mounted battery packs to be tested and low test efficiency, and to achieve the technical effect of improving the test efficiency.

[0007] As conceived above, the technical solution adopted by the present invention is:

[0008] An aging test device, used for testing a PCB board in a vehicle-mounted battery pack, comprises a box body and a heater arranged in the box body, two opposite sides of the box body are provided with door bodies, and a placement rack is arranged inside the box body;

[0009] The placement rack includes multiple layers of placement boards spaced apart in a vertical direction, each of the placement boards is provided with a placement position, and the placement boards can be pulled out to the placement position and located outside the door body.

[0010] Furthermore, the placement rack is also provided with a slide rail corresponding to the placement plate, and the placement plate is provided with a handle.

[0011] Furthermore, a limiting member is arranged on the slide rail.

[0012] Furthermore, the placement rack includes a first frame body and a second frame body arranged along a first direction, a first end of the first frame body is hinged to the second frame body, and the second end of the first frame body can be selectively fixedly connected to or separated from the second frame body.

[0013] Further, one of the first frame body and the second frame body is provided with a locking piece, and the other frame body is provided with a locking hole capable of cooperating with the locking piece.

[0014] Furthermore, the placement plate on the first frame and the placement plate on the second frame can be pulled out from different door bodies.

[0015] Furthermore, a heat insulation board is provided at the bottom of the box body, and the placement rack is provided on the heat insulation board.

[0016] Furthermore, a guide rail is arranged in the box body, and the placement rack is movably arranged on the guide rail.

[0017] As conceived above, the technical solution adopted by the present invention is:

[0018] A method for using an aging test device, controlling the aging test device to test a PCB board to be tested, comprising the following steps:

[0019] Open the door and pull out a placement plate;

[0020] Placing the PCB board to be tested on the placement position of the pulled out placement plate;

[0021] After the placement plate is reset, the door is closed and the PCB board to be tested is tested.

[0022] Furthermore, each of the placement boards is provided with a plurality of placement positions, and before the PCB board to be tested is tested, the method further includes:

[0023] Detect whether the PCB board is placed on each of the placement positions.

[0024] Beneficial effects of the present invention:

[0025] The aging test device proposed in the present invention can be pulled out individually when placing the PCB board in the vehicle battery pack. There is no need to reserve space for the hand to extend between the upper and lower adjacent placement plates. It is only necessary to reserve the placement space for the vehicle battery pack. When the PCB board needs to be tested, the tester pulls out one placement plate, and the other placement plates remain stationary, and the PCB board to be tested is placed on the placement position of the pulled-out placement plate. At this time, no other placement plates will interfere with the placement of the PCB board. After the PCB board is placed in place, the placement plate is pushed into the box. Compared with the existing placement racks of the same size, the placement rack can be provided with more placement plates, and then more placement positions, which significantly improves the test efficiency.

[0026] In addition, two doors are provided, so that the tester can place the PCB board from both sides of the box at the same time, which increases the placement speed and further improves the test efficiency.

[0027] The method for using the aging test device proposed by the present invention can test more PCB boards at the same time in a limited space, and it is very convenient to place and take out the PCB boards, which significantly improves the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0029] Figure 1 is a schematic diagram of the structure of an aging test device provided by an embodiment of the present invention;

[0030] Figure 2 is a structural schematic diagram of a placement rack provided by an embodiment of the present invention from one viewing angle;

[0031] Figure 3 is a top view of a placement plate provided by an embodiment of the present invention;

[0032] Figure 4 This is a front view of a storage rack provided by an embodiment of the present invention;

[0033] Figure 5 It is a schematic diagram of the structure of the aging test device provided by an embodiment of the present invention after the door body is hidden;

[0034] Figure 6 is a schematic structural diagram of a placement rack provided by an embodiment of the present invention from another perspective;

[0035] Figure 7 is a schematic structural diagram of the locking member and the locking hole provided by an embodiment of the present invention when they cooperate with each other;

[0036] Figure 8 is a schematic structural diagram of a locking member provided by an embodiment of the present invention;

[0037] Fig. 9 is a schematic structural diagram of a locking hole bracket provided by an embodiment of the present invention;

[0038] Fig.10 It is a schematic diagram of the structure of the aging test device provided by the embodiment of the present invention after the door body and the placement rack are hidden;

[0039] Fig.11 is a cross-sectional view of the aging test device provided by an embodiment of the present invention after the door body and the placement rack are hidden;

[0040] Fig.12 is a schematic diagram of air flow when the aging test device provided by an embodiment of the present invention is an internal circulation wind;

[0041] Fig.13 It is a schematic diagram of air flow when the aging test device provided by an embodiment of the present invention is an external circulating wind.

[0042] In the figure:

[0043] 1. Box body; 11. Heater; 12. Door body; 121. Observation window; 13. Placement rack; 131. First rack; 1311. Locking piece; 1312. Locking piece bracket; 132. Second rack; 1321. Locking hole; 1322. Locking hole bracket; 133. Placement plate; 1331. Placement position; 13311. Placement clip; 13312. Placement position connector; 134. Slide rail; 135. Drag chain; 136. Heavy-duty plug; 137. Temperature monitor; 14. Heat insulation board; 15. Guide rail; 16. Operation panel; 17. Display panel;

[0044] 21. Fan; 22. Main air duct; 23. Air inlet duct; 231. Air regulating plate; 24. Exhaust duct; 251. First air valve; 252. Second air valve; 253. Third air valve; 26. Fan base. DETAILED DESCRIPTION

[0045] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, not all.

[0046] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0047] In the description of the present invention, 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 or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The present invention discloses an aging test device for testing a PCB board in a vehicle-mounted battery pack, such as Figure 1 As shown, it includes a box body 1 and a heater 11 arranged in the box body 1. Door bodies 12 are provided on two opposite sides of the box body 1, and a placement rack 13 is provided inside the box body 1. The placement rack 13 includes multiple layers of placement boards 133 arranged at intervals in the vertical direction, and each placement board 133 is provided with a placement position 1331, and the placement boards 133 can be pulled out until the placement position 1331 is located outside the door body 12.

[0049] It can be understood that when it is necessary to perform an aging test on the PCB board, the door body 12 opened on the two sides of the aging test device is opened, and the placement plate 133 is pulled out. The aging test device can place the PCB board from the two door bodies 12 at the same time. After the PCB board is placed on the placement position 1331 on the placement plate 133, the placement plate 133 is pushed into the box body 1, and then the door body 12 is closed to form a closed space in the box body 1. The heater 11 works to heat up the inside of the box body 1, and the aging test of the PCB board is performed.

[0050] Specifically, the heater 11 can generate heat to heat the air inside the box 1 after being powered on. In this embodiment, the heater 11 is a heating wire.

[0051] The aging test device proposed by the present invention can be pulled out individually when placing the PCB board, and there is no need to reserve space for the hand to extend between the upper and lower adjacent placement plates 133. It is only necessary to reserve the placement space for the PCB board. When the PCB board needs to be tested, the tester pulls out one placement plate 133, and the other placement plates 133 remain stationary, and the PCB board to be tested is placed on the placement position 1331 of the pulled out placement plate 133. At this time, no other placement plates 133 will interfere with the placement of the PCB board. After the PCB board is placed in place, the placement plate 133 is pushed into the box 1. Compared with the existing placement rack 13 of the same size, the placement rack 13 can be provided with more placement plates 133, and then more placement positions 1331 are provided, which significantly improves the test efficiency. In addition, two door bodies 12 are provided, and the tester can place the PCB board from both sides of the box 1 at the same time, which improves the placement speed and further improves the test efficiency.

[0052] Furthermore, if Figure 2 and Figure 3 As shown, in order to facilitate the operator to pull out the placement plate 133, the placement rack 13 is also provided with a slide rail 134 corresponding to the placement plate 133, and the placement plate 133 is provided with a handle.

[0053] Specifically, in this embodiment, a ball bearing slide rail is provided on the placement rack 13, and the placement rack 13 and the placement plate 133 are in rolling friction. Compared with sliding friction, rolling friction is smaller, which can reduce the friction resistance between the two and save more effort when pulling out the placement plate 133.

[0054] Furthermore, in order to prevent the placement plate 133 from sliding out of the placement rack 13, a limiting member (not shown in the figure) is provided on the slide rail 134. The limiting member can stop the placement plate 133 at the maximum pull-out position to prevent the placement plate 133 from sliding out of the placement rack 13 due to inertia. The limiting member is a commonly used limiting member in the existing ball bearing slide rail, and will not be described in detail here.

[0055] Furthermore, if Figure 3 and Figure 4 As shown, in this embodiment, a placement clamp 13311 and a placement position connector 13312 are provided on the placement position 1331. After the PCB board to be tested is placed in the placement position 1331, the placement clamp 13311 can clamp the PCB board to be tested and connect the PCB board to be tested with the placement position connector 13312 so that the PCB board is powered on and is in a working state.

[0056] Furthermore, if Figure 3 and4 As shown, in this embodiment, the multi-layer placement boards 133 are all provided with drag chains 135 , and the cables of the placement position connectors 13312 on each placement position 1331 are collected and bound by the drag chains 135 on the placement board 133 .

[0057] Further, see Figure 5 In this embodiment, an operation panel 16 and a display panel 17 are also provided on the box body 1. The display panel 17 can display the test information of the PCB board on each placement position 1331. The operation panel 16 is connected to each placement position connector 13312 and can monitor and control each PCB board.

[0058] Further, see Figure 1 and Figure 5 In order to facilitate the staff to view the test status of the PCB board, in this embodiment, transparent observation windows 121 are provided on the front and rear doors 12. A display panel 17 is provided on the surface of the box body 1 where the door body 12 is provided.

[0059] Further, see Figure 4 and Figure 6 In this embodiment, further, a heavy-load plug 136 is provided at the bottom of the placement rack 13, and the heavy-load plug 136 is connected to the control system of the aging test device. Each placement position connector 13312 is connected to the control system through the heavy-load plug 136, and the operation panel 16 is also connected to the control system of the aging test device. The staff can control each placement position 1331 through the operation panel 16.

[0060] Furthermore, in this embodiment, a QR code (not shown) is provided on each placement position 1331. After the PCB to be tested is placed, the QR code corresponding to the placement position 1331 is scanned to bind the PCB to be tested to the placement position 1331, so as to facilitate product tracing and source tracing.

[0061] Further, see Figure 2 The placement rack 13 includes a first frame body 131 and a second frame body 132 arranged along a first direction, a first end of the first frame body 131 and a second frame body 132 are hinged, and a second end of the first frame body 131 can be selectively fixedly connected to or separated from the second frame body 132.

[0062] Specifically, Figure 1 , Figure 2 and Figure 5 As shown, the first direction is the direction in which the placement rack 13 is pulled out and pushed back, that is, Figure 1 and Figure 5The front-to-back direction. Multi-layer placement plates 133 are arranged at intervals on the first frame 131 and the second frame 132, and the multi-layer placement plates 133 can be pulled out from the door body 12. The first ends of the first frame 131 and the second frame 132 are hinged. During normal operation, the second ends of the first frame 131 and the second frame 132 are fixedly connected together. When maintenance is required, the first frame 131 and the second frame 132 can rotate relative to each other around one end of the hinge to separate the first frame 131 and the second frame 132. Specifically, in the present embodiment, the first frame 131 and the second frame 132 are hinged by hinges, and three hinges are arranged along the vertical direction.

[0063] Further, see Figure 2 and Figure 7 One of the first frame 131 and the second frame 132 is provided with a locking piece 1311 , and the other is provided with a locking hole 1321 capable of cooperating with the locking piece 1311 .

[0064] Of course, in other embodiments, the placement rack 13 may include only one rack body, and the placement plate 133 on the rack body can be pulled out from two door bodies.

[0065] Specifically, Figure 2 and Figure 7-Figure 9 As shown, in this embodiment, a locking member 1311 is provided on the first frame 131, and a locking hole 1321 cooperating with the locking member 1311 is provided on the second frame 132. When the first frame 131 is to be fixedly connected with the second frame 132, the first frame 131 and the second frame 132 are first rotated around the hinge end until they are close to each other, and then the locking member 1311 on the first frame 131 is inserted into the locking hole 1321 on the second frame 132. When the first frame 131 is to be separated from the second frame 132, the locking member 1311 on the first frame 131 is disengaged from the locking hole 1321 on the second frame 132, and the first frame 131 and the second frame 132 can be separated.

[0066] Furthermore, the placement plate 133 on the first frame 131 and the placement plate 133 on the second frame 132 can be pulled out from different door bodies 12 .

[0067] Specifically, in this embodiment, the pulling direction of the multi-layer placement board 133 in the first frame 131 is opposite to the pulling direction of the multi-layer placement board 133 in the second frame 132. The multi-layer placement board 133 of the first frame 131 can be pulled out and pushed back from the front door 12, and the multi-layer placement board 133 of the second frame 132 can be pulled out and pushed back from the rear door 12.

[0068] Further, see Fig.10 A heat insulation board 14 is also provided at the bottom of the box body 1 , and the placement rack 13 is arranged on the heat insulation board 14 .

[0069] Specifically, Fig.10 As shown, a heat insulation board 14 is also provided at the bottom of the box 1, and the placement rack 13 is arranged on the heat insulation board 14. The heat insulation board 14 is arranged to prevent the high-temperature air in the box 1 from heating the ground and causing ground damage when the aging test device tests the PCB board, and can also further improve the sealing effect of the aging test device, avoid heat loss, and avoid high-temperature gas leakage to cause damage to the staff.

[0070] Furthermore, participate Figure 5 A guide rail 15 is arranged in the box body 1 , and the placement rack 13 is movably arranged on the guide rail 15 .

[0071] Specifically, Figure 2 , Figure 5 and Fig.10 As shown, in this embodiment, the guide rail 15 is arranged on the heat insulation board 14. A roller is arranged at the bottom of the box body 1, and the roller is movably arranged on the guide rail 15. When the placement rack 13 needs to be repaired, the placement rack 13 is moved from the inside of the box body 1 to the outside of the box body 1 through the roller and the guide rail 15, and then the locking piece 1311 on the first frame 131 is disengaged from the locking hole 1321 on the second frame 132, so that the unhinged ends of the first frame 131 and the second frame 132 can be separated and opened, and the placement rack 13 can be repaired.

[0072] Furthermore, if Figure 5 As shown, in this embodiment, in order to facilitate pushing the placement rack 13 into the box body 1, the ends of the guide rails 15 are all configured to be trumpet-shaped.

[0073] Further, in order to facilitate the movement of the placement rack 13, a handle is also provided on the placement rack 13. The handle on the placement rack 13 can have the same structure as the handle on the placement plate 133, or it can be different.

[0074] Furthermore, in order to prevent the locking member 1311 and the locking hole 1321 from protruding outwards and affecting the movement of the placement rack 13 from the inside of the box body 1 to the outside of the box body 1, as shown in FIG. Figure 2 and Figure 7 As shown, in this embodiment, the locking piece 1311 and the locking hole 1321 are both arranged on the inner side of the placement rack 13.

[0075] Furthermore, if Figure 2 and Figure 7As shown, the locking piece 1311 is arranged on the first frame 131 through the locking piece bracket 1312, and the second frame 132 is provided with a locking hole bracket 1322, and the locking hole bracket 1322 is provided with a locking hole 1321. The locking piece bracket 1312 and the locking hole bracket 1322 are arranged to ensure that the locking piece 1311 can be inserted into the locking hole 1321 to ensure fixation, and at the same time, the locking hole 1321 can be made farther away from the first frame 131, so that when the first frame 131 and the second frame 132 are rotated and separated, the locking hole 1321 that cooperates with the locking piece 1311 and extends to the first frame 131 will not be too close to the first frame 131 to affect the rotational separation between the first frame 131 and the second frame 132.

[0076] Furthermore, if Figure 1 and Fig.11 As shown, a fan 21, a main air duct 22, an air inlet duct 23, an air exhaust duct 24 and an air regulating plate 231 are also provided in the box body 1.

[0077] Specifically, Figure 1 and Fig.11 As shown, in this embodiment, the fan 21 is fixedly arranged on the top of the box body 1 through the fan seat 26, and the air outlet of the fan 21 is connected to the heater 11. After the heater 11 heats the air sent out by the fan 21, it is sequentially delivered to the placement rack 13 through the main air duct 22 arranged on the top of the box body 1, the air inlet duct 23 on the left side of the placement rack 13, and the air is delivered to the placement rack 13 through the air regulating plate 231 arranged at the outlet of the air inlet duct 23 to heat the environment where the PCB board to be tested on the placement rack 13 is located, so as to facilitate the testing of various performances of the PCB board in a high temperature environment, such as voltage, current stability, communication, etc. The heated air is passed to the air inlet end of the fan 21 through the exhaust duct 24 on the right side of the placement rack 13.

[0078] Further, see Fig.11 A first air valve 251 , a second air valve 252 and a third air valve 253 are also provided between the fan 21 and the heater 11 .

[0079] Specifically, Fig.12 As shown, when the first air valve 251 and the third air valve 253 are closed, the second air valve 252 is opened, and the air is internally circulated at this time. The fan 21 is started, and the air passes through the first air valve 251, the second air valve 252, and the third air valve 253 from the air outlet end of the fan 21 in sequence, and is heated by the heater 11, and then passes through the main air duct 22, the air inlet duct 23, and the air regulating plate 231, and is transported to the placement rack 13, and then is transported to the air inlet end of the fan 21 through the exhaust duct 24.

[0080] like Fig.13As shown, when the first air valve 251 and the third air valve 253 are opened, the second air valve 252 is closed. At this time, it is external circulation air, and the fan 21 is started to output the air in the box 1 from the air outlet end and discharge it outside the box 1 through the first air valve 251. The external fresh air enters the box 1 through the third air valve 253, and is heated by the heater 11, and then is transported to the placement rack 13 through the main air duct 22, the air inlet duct 23, and the air regulating plate 231, and then is transported to the air inlet end of the fan 21 through the exhaust duct 24, and the third air valve 253 at the air outlet end is discharged from the box 1.

[0081] Furthermore, if Figure 1 , Figure 2 and Figure 6 As shown, a temperature monitor 137 is also provided on the placement rack 13 , and the temperature monitor 137 can switch the aging test device to external circulation air or internal circulation air according to the temperature in the box body 1 .

[0082] Specifically, the temperature monitor 137 is a temperature probe.

[0083] This embodiment also provides a method for using the aging test device, which controls the aging test device to test a PCB board in a vehicle battery pack to be tested, including the following steps:

[0084] Open the door 12 and pull out a placement plate 133;

[0085] Place the PCB board to be tested on the placement position 1331 of the pulled out placement plate 133;

[0086] After the placement plate 133 is reset, the door body 12 is closed, and the PCB board to be tested is tested.

[0087] Specifically, Figure 1-Figure 11 As shown, in this embodiment, the front and rear doors 12 are first opened, and a placement plate 133 is pulled out from the first frame 131 and the second frame 132 respectively, and then the PCB board to be tested is placed on the detection position, and the placement clamp 13311 fixes the PCB board to be tested, and then the placement plate 133 is pushed back and the door 12 is closed, the heater 11 is powered on to generate heat, and the PCB board to be tested is tested, and the test status of the PCB board is monitored through the display panel 17.

[0088] Furthermore, each placement plate 133 is provided with a plurality of placement positions 1331, and before testing the PCB board to be tested, the following steps are also included:

[0089] Check whether a PCB board is placed on each placement position 1331 .

[0090] It is understandable that by detecting whether a PCB board is placed on each placement position 1331, omissions when placing the PCB board to be tested can be avoided, and aging testing of unloaded placement positions 1331 can be prevented, which may cause damage to the aging test device.

[0091] Optionally, a camera may be provided on the placement position 1331 to detect whether a PCB board is placed on the placement position 1331 .

[0092] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An aging test device for testing a PCB board in a vehicle-mounted battery pack, comprising a box (1) and a heater (11) arranged in the box (1), characterized in that: The box body (1) is provided with door bodies (12) on two opposite sides thereof, and a placement rack (13) is provided inside the box body (1); The placement rack (13) comprises a plurality of placement plates (133) arranged at intervals in the vertical direction, each of the placement plates (133) being provided with a placement position (1331), and the placement plates (133) can be pulled out to the placement position (1331) to be located outside the door body (12).

2. The aging test device according to claim 1, characterized in that: The placement rack (13) is also provided with a slide rail (134) corresponding to the placement plate (133), and the placement plate (133) is provided with a handle.

3. The aging test device according to claim 2, characterized in that: A limiting member is arranged on the slide rail (134).

4. The aging test device according to claim 1, characterized in that: The placement rack (13) comprises a first frame body (131) and a second frame body (132) arranged along a first direction, the first end of the first frame body (131) and the second frame body (132) are hinged, and the second end of the first frame body (131) can be selectively fixedly connected to or separated from the second frame body (132).

5. The aging test device according to claim 4, characterized in that: One of the first frame (131) and the second frame (132) is provided with a locking piece (1311), and the other is provided with a locking hole (1321) capable of cooperating with the locking piece (1311).

6. The aging test device according to claim 4, characterized in that: The placement plate (133) on the first frame (131) and the placement plate (133) on the second frame (132) can be pulled out from different door bodies (12).

7. The aging test device according to claim 1, characterized in that: The bottom of the box body (1) is also provided with a heat insulation board (14), and the placement rack (13) is arranged on the heat insulation board (14).

8. The aging test device according to any one of claims 1 to 7, characterized in that: A guide rail (15) is arranged inside the box body (1), and the placement rack (13) is movably arranged on the guide rail (15).

9. A method for using the aging test device, characterized in that: Controlling the aging test device according to any one of claims 1 to 8 to test the PCB board to be tested comprises the following steps: Open the door body (12) and pull out a placement plate (133); Placing the PCB board to be tested on the placement position (1331) of the pulled-out placement plate (133); After the placement plate (133) is reset, the door body (12) is closed, and the PCB board to be tested is tested.

10. The method for using the aging test device according to claim 9, characterized in that: Each of the placement plates (133) is provided with a plurality of placement positions (1331), and before testing the PCB board to be tested, the method further comprises: Detect whether the PCB board is placed on each of the placement positions (1331).

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