Testing device

Abstract

The utility model discloses a testing device, and relates to the technical field of testing devices. The testing device comprises a sample carrying platform, a heat management mechanism, a charging and discharging testing device and a short circuit control assembly, the sample carrying platform defines a containing space, the containing space is suitable for containing a to-be-tested piece, and the heat management mechanism communicates with the containing space and is used for driving an insulation heat exchange medium to flow between the heat management mechanism and the containing space; the charging and discharging test equipment is suitable for being electrically connected with a to-be-tested piece, and the short-circuit control assembly is suitable for being electrically connected with the to-be-tested piece to short-circuit the to-be-tested piece. Therefore, the to-be-tested piece is electrically connected with the charging and discharging test equipment or the short-circuit control assembly, the temperature of the insulating heat exchange medium in the accommodating space is adjusted through the thermal management mechanism, various safety tests can be performed on the to-be-tested piece, in addition, the thermal management mechanism can also adjust the temperature of the insulating heat exchange medium, and the safety of the to-be-tested piece is improved. Therefore, overheating and supercooling safety testing is carried out on the to-be-tested piece.

Description

TECHNICAL FIELD

[0001] The utility model relates to test device technical field especially is related to a test device. BACKGROUND

[0002] The power battery is the core part of new energy automobile, and the safety problem of power battery has been concerned. In the related art, the safety test of the submerged power battery is not perfect, and it is difficult to test the safety of the submerged power battery under various special conditions. Therefore, at present, an urgent need exists for a device capable of testing the safety of the submerged power battery under various special conditions. SUMMARY

[0003] The utility model discloses at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a test device, which can comprehensively test the safety of the test piece.

[0004] According to the test device of the utility model embodiment, the test piece is electrically connected with the charge-discharge test equipment or the short-circuit control assembly, and the temperature of the insulating heat exchange medium in the accommodation space is adjusted by the heat management mechanism, so that the test piece can be tested for safety. In addition, the heat management mechanism can also adjust the temperature of the insulating heat exchange medium to test the safety of the test piece under overheat and overcooling conditions.

[0005] According to the test device of the utility model embodiment, the test piece is electrically connected with the charge-discharge test equipment or the short-circuit control assembly, and the temperature of the insulating heat exchange medium in the accommodation space is adjusted by the heat management mechanism, so that the test piece can be tested for safety. In addition, the heat management mechanism can also adjust the temperature of the insulating heat exchange medium to test the safety of the test piece under overheat and overcooling conditions.

[0006] According to some embodiments of the utility model, the test device further comprises: two terminals, the terminal is arranged in the side wall of the sample loading platform and part of the structure extends into the accommodation space, the terminal is suitable for being electrically connected with the test piece, and the charge-discharge test equipment and the short-circuit control assembly can be electrically connected with the terminal.

[0007] According to some embodiments of the utility model, the test device further comprises: a closing device, one of the terminals comprises a first sub-terminal and a second sub-terminal, the closing device is connected between the first sub-terminal and the second sub-terminal, and the closing device can control the on-off of the first sub-terminal and the second sub-terminal.

[0008] According to some embodiments of the present application, the short-circuit control assembly comprises: a support frame and a short-circuiting piece, the short-circuiting piece is movably arranged on the support frame, and the short-circuiting piece can short-circuit two terminal posts.

[0009] According to some embodiments of the present application, the short-circuit control assembly further comprises: a driving piece, the driving piece is arranged on the support frame and is in transmission connection with the short-circuiting piece, and the driving piece is used to drive the short-circuiting piece to move relative to the support frame.

[0010] According to some embodiments of the present application, the support frame comprises: a support column and a support plate, the support plate is connected with the support column, the driving piece is arranged on the support plate, and the short-circuiting piece is sleeved on the support column and can move along the extension direction of the support column.

[0011] According to some embodiments of the present application, the short-circuiting piece comprises: a guide plate and a connecting piece, the guide plate is connected with the connecting piece and is configured as an insulating plate, the guide plate is sleeved on the support column and can move along the extension direction of the support column, and the connecting piece can short-circuit two terminal posts.

[0012] According to some embodiments of the present application, the short-circuit control assembly further comprises: two connecting rows, two connecting rows correspond to two terminal posts one by one and are electrically connected, and the short-circuiting piece can short-circuit two connecting rows.

[0013] According to some embodiments of the present application, two connecting rows are oppositely and spacedly arranged, each connecting row is provided below with a matching piece, the matching piece is electrically connected with the corresponding connecting row, part of each matching piece is located between two connecting rows, and the short-circuiting piece can short-circuit two matching pieces.

[0014] According to some embodiments of the present application, the heat management mechanism comprises: a refrigeration assembly, the refrigeration assembly comprises: a compressor, a condenser, an evaporator and a first driving piece, the compressor, the condenser and the evaporator form a first refrigeration circuit, a refrigerant flows in the first refrigeration circuit, the first driving piece, the evaporator and the containing space form a second refrigeration circuit, the second refrigeration circuit flows with the insulating heat exchange medium, and the first refrigeration circuit and the second refrigeration circuit exchange heat through the evaporator; and / or, the heat management mechanism further comprises: a heating assembly, the heating assembly comprises: a heater and a second driving piece, the second driving piece, the heater and the containing space form a heating circuit, and the heating circuit flows with the insulating heat exchange medium.

[0015] Additional aspects and advantages of the present application will be set forth in part in the following description, and in part will become apparent to those skilled in the art upon examination of the following description, or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0017] Figure 1 is a schematic diagram of a test device according to an embodiment of the present application Figure One ;

[0018] Figure 2 is a schematic diagram of a test device according to an embodiment of the present application Figure Two ;

[0019] Figure 3 is a schematic diagram of a short circuit control assembly according to an embodiment of the present application Figure One ;

[0020] Figure 4 is a schematic diagram of a short circuit control assembly according to an embodiment of the present application Figure Two .

[0021] Reference Signs:

[0022] Sample loading platform 21; accommodating space 211;

[0023] Charging and discharging test equipment 22;

[0024] Short circuit control assembly 23; support frame 231; support column 2311; support plate 2312; short circuit piece 232; guide plate 2321; connecting piece 2322; driving piece 233; connecting row 234; matching piece 235; support platform 236; connecting shaft 237;

[0025] Terminal post 24; first sub-terminal post 241; second sub-terminal post 242;

[0026] Closing device 25; charging and discharging equipment rack 26;

[0027] Test device 210; test piece 220. DETAILED DESCRIPTION

[0028] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0029] The following description is made with reference toFigures 1-4 The testing device 210 according to the embodiments of the present application is described.

[0030] As shown in Figures 1-4 The testing device 210 according to the embodiments of the present application comprises a sample loading platform 21, a thermal management mechanism, a charge-discharge testing device 22 and a short-circuit control assembly 23. The sample loading platform 21 defines an accommodation space 211, which is adapted to accommodate a to-be-tested piece 220. The thermal management mechanism is in communication with the accommodation space 211 and is used to drive an insulating heat exchange medium to flow between the thermal management mechanism and the accommodation space 211. The charge-discharge testing device 22 is adapted to be electrically connected with the to-be-tested piece 220. The short-circuit control assembly 23 is adapted to be electrically connected with the to-be-tested piece 220 to short-circuit the to-be-tested piece 220.

[0031] The testing device 210 can be used to perform safety testing on the to-be-tested piece 220, and the safety testing includes but is not limited to overcharge testing, over-discharge testing, overcurrent testing, short-circuit testing, overheat testing and overcooling testing, etc. The to-be-tested piece 220 can be a battery pack, a battery module, a battery cell, etc. The sample loading platform 21 can be configured in a cuboid structure. The sample loading platform 21 can be made of a high-temperature-resistant material, for example, a steel material, such as 304 stainless steel, 316 stainless steel, Q236 structural steel, etc. The sample loading platform 21 can carry the to-be-tested piece 220, and the to-be-tested piece 220 can be placed in the accommodation space 211 defined by the sample loading platform 21. The accommodation space 211 can be provided with an insulating heat exchange medium, such as silicon oil or fluorinated oil, etc. The insulating heat exchange medium can be heat-conducting and non-conducting. The insulating heat exchange medium can immerse the to-be-tested piece 220 to perform safety testing on the fully immersed to-be-tested piece 220.

[0032] As shown in Figure 1 and Figure 2As shown, the test device 210 can further include a charge-discharge device rack 26, and the charge-discharge test device 22 can be placed on the charge-discharge device rack 26, and the charge-discharge test device 22 can be electrically connected with the to-be-tested piece 220, and the working current range of the charge-discharge test device 22 can be 0-1000A, and the working voltage range of the charge-discharge test device 22 can be -5V-100V. When the charge-discharge test device 22 is electrically connected with the to-be-tested piece 220, the charge-discharge test device 22 can implement various effects on the to-be-tested piece 220, for example, charging the to-be-tested piece 220, discharging the to-be-tested piece 220, charging the to-be-tested piece 220 with a large current, discharging the to-be-tested piece 220 with a large current, and the like, so as to perform overcharge test, overdischarge test, overcurrent test and the like safety test on the to-be-tested piece 220. The short-circuit control assembly 23 can be electrically connected with the to-be-tested piece 220, and when the short-circuit control assembly 23 is electrically connected with the to-be-tested piece 220, the short-circuit control assembly 23 can short-circuit the to-be-tested piece 220, so as to perform short-circuit test on the to-be-tested piece 220. Moreover, when performing overcharge test, overdischarge test, overcurrent test, short-circuit test and the like safety test on the to-be-tested piece 220, the thermal management mechanism can adjust the temperature of the insulating heat exchange medium in the accommodation space 211, so as to simulate the thermal management of the to-be-tested piece 220 in an actual situation.

[0033] The thermal management mechanism can be in communication with the accommodation space 211, and when the thermal management mechanism is in communication with the accommodation space 211, the thermal management mechanism can drive the insulating heat exchange medium to flow between the thermal management mechanism and the accommodation space 211, and a heat exchange loop can be formed between the thermal management mechanism and the accommodation space 211, and the thermal management mechanism can increase or decrease the temperature of the insulating heat exchange medium in the heat exchange loop, so as to adjust the temperature of the insulating heat exchange medium in the accommodation space 211, so that the to-be-tested piece 220 works in a corresponding temperature range, and the range of the corresponding temperature range can be -40℃-300℃, so that the to-be-tested piece 220 works in an overheating or overcooling temperature range, so as to perform overheat test or overcooling test on the to-be-tested piece 220.

[0034] As some embodiments of the present application, the thermal management mechanism includes a flow rate control mechanism, and the flow rate control mechanism can control the flow rate of the insulating heat exchange medium between the thermal management mechanism and the accommodation space 211, and the flow rate range can be 0.5L / min-30L / min, and the flow rate control mechanism controls the temperature change rate of the to-be-tested piece 220 by controlling the flow rate of the insulating heat exchange medium in the heat exchange loop, so that the to-be-tested piece 220 works in a corresponding temperature range, so as to meet the environmental temperature requirements of different tests, and as some embodiments of the present application, the flow rate control mechanism can be configured as a drive pump.

[0035] It should be noted that the heat management mechanism can be in communication with the accommodation space 211 for a long time, for example, when the charge-discharge test device 22 or the short circuit control assembly 23 is electrically connected with the to-be-tested piece 220, the heat management mechanism can be in communication with the accommodation space 211 and adjust the temperature of the insulating heat exchange medium in the accommodation space 211, or when neither the charge-discharge test device 22 nor the short circuit control assembly 23 is electrically connected with the to-be-tested piece 220, the heat management mechanism can also be in communication with the accommodation space 211 and adjust the temperature of the insulating heat exchange medium in the accommodation space 211, so that the to-be-tested piece 220 can continuously work in the required temperature range of the test.

[0036] In the above embodiment, by electrically connecting the to-be-tested piece 220 with the charge-discharge test device 22 or the short circuit control assembly 23, and adjusting the temperature of the insulating heat exchange medium in the accommodation space 211 by the heat management mechanism, the to-be-tested piece 220 can be subjected to various safety tests, and in addition, the heat management mechanism can also adjust the temperature of the insulating heat exchange medium to perform overheat and overcool safety tests on the to-be-tested piece 220.

[0037] As some embodiments of the present application, the inner wall (including the side wall and the bottom wall) of the accommodation space 211 can be paved with an insulating piece, which can be neoprene, propylene rubber, polyvinyl chloride, polyethylene, silicon nitride porcelain, silicon nitride, tempered glass or organic glass, etc. For example, the inner wall of the accommodation space 211 can be paved with 2cm thick organic glass, and the insulating piece can insulate the to-be-tested piece 220 from the sample loading platform 21, so that the safety test can be smoothly performed, the accuracy of the test result can be ensured, and the risk of electric leakage can be reduced.

[0038] In some embodiments of the present application, as shown in Figures 1-4 The test device 210 further comprises two connecting posts 24, the connecting posts 24 are arranged through the side wall of the sample loading platform 21 and part of the structure extends into the accommodation space 211, the connecting posts 24 are adapted to be electrically connected with the to-be-tested piece 220, and the charge-discharge test device 22 and the short circuit control assembly 23 can be electrically connected with the connecting posts 24.

[0039] Among them, the two connecting posts 24 can be conductive, the two connecting posts 24 can be arranged through the side wall of the sample loading platform 21, part of the structure of the two connecting posts 24 can extend into the accommodation space 211, and part of the structure of the two connecting posts 24 can be located outside the sample loading platform 21, the two connecting posts 24 can be electrically connected with the to-be-tested piece 220, for example, the two connecting posts 24 can be respectively electrically connected with the corresponding positive and negative poles of the to-be-tested piece 220, and the charge-discharge test device 22 and the short circuit control assembly 23 can be selectively electrically connected with the connecting posts 24.

[0040] When the charging and discharging test device 22 is electrically connected with the terminal post 24, the to-be-tested piece 220, the two terminal posts 24 and the charging and discharging test device 22 can form a closed loop, and the charging and discharging test device 22 can implement various effects on the to-be-tested piece 220, for example, charging the to-be-tested piece 220, discharging the to-be-tested piece 220, charging the to-be-tested piece 220 with a large current, discharging the to-be-tested piece 220 with a large current and the like, so as to perform overcharge test, overdischarge test, overcurrent test and the like on the to-be-tested piece 220.

[0041] When the short-circuit control assembly 23 is electrically connected with the terminal post 24, the to-be-tested piece 220, the two terminal posts 24 and the short-circuit control assembly 23 can form a closed loop, and the short-circuit control assembly 23 can short-circuit the to-be-tested piece 220, so as to perform short-circuit test on the to-be-tested piece 220.

[0042] In the above embodiment, by arranging the two terminal posts 24, the to-be-tested piece 220 can be selectively electrically connected with the charging and discharging test device 22 and the short-circuit control assembly 23, so as to perform various tests on the to-be-tested piece 220, and the arrangement can complete the wiring work outside the sample loading platform 21, so that the operation is simple and convenient, the operation difficulty is reduced, the test efficiency is improved, and the structure is reasonable and easy to implement.

[0043] In some embodiments of the utility model, as shown in Figures 1-4 The test device 210 further includes a closing device 25, one of the terminal posts 24 includes a first sub-terminal post 241 and a second sub-terminal post 242, the closing device 25 is connected between the first sub-terminal post 241 and the second sub-terminal post 242, and the closing device 25 can control the on-off of the first sub-terminal post 241 and the second sub-terminal post 242.

[0044] The closing device 25 can be connected between the first sub-terminal post 241 and the second sub-terminal post 242 of one of the terminal posts 24, and the closing device 25 can control the on-off of the first sub-terminal post 241 and the second sub-terminal post 242, so as to control whether the to-be-tested piece 220 is in electrical communication with the charging and discharging test device 22 and the short-circuit control assembly 23.When the to-be-tested piece 220 needs to be in electrical communication with the charging and discharging test device 22 or the short-circuit control assembly 23, the controller of the test device 210 can drive the closing device 25 to close, so that the to-be-tested piece 220 and the charging and discharging test device 22 or the short-circuit control assembly 23 form a closed loop, so as to perform corresponding safety test, and when the test is completed, the controller can drive the closing device 25 to open, so as to end the test. By arranging the closing device 25, the on-off of the closed loop can be controlled, so as to control the start or end of the safety test, and the risk of safety accidents can be reduced.

[0045] In some embodiments of the utility model, as shown in Figure 3 andFigure 4 As shown in the figure, the short-circuit control assembly 23 comprises a support frame 231 and a short-circuit piece 232, the short-circuit piece 232 is movably arranged on the support frame 231, and the short-circuit piece 232 can short-circuit the two terminal posts 24.

[0046] The support frame 231 can be fixedly arranged on the outer wall of the sample loading platform 21, and the short-circuit piece 232 is movably arranged on the support frame 231, that is, the short-circuit piece 232 can move relative to the support frame 231, and the short-circuit piece 232 can be moved to be electrically connected with the two terminal posts 24. The resistance of the short-circuit piece 232 is small, for example, the resistance of the short-circuit piece 232 can range from 1 mΩ to 100 mΩ, when the short-circuit piece 232 is electrically connected with the two terminal posts 24, the short-circuit piece 232, the two terminal posts 24 and the to-be-tested piece 220 form a closed loop, and the short-circuit piece 232 short-circuits the two terminal posts 24, so as to short-circuit the to-be-tested piece 220, and the short-circuit test is performed on the to-be-tested piece 220, so as to verify the safety performance of the to-be-tested piece 220. By arranging the movably relative support frame 231 and the short-circuit piece 232, whether the to-be-tested piece 220 is short-circuited and the start and end of the short-circuit test can be selectively controlled, the test difficulty of the short-circuit test can be reduced, and the test efficiency of the short-circuit test can be improved.

[0047] In some embodiments of the utility model, as shown in the figure, Figures 1-4 As shown in the figure, the short-circuit control assembly 23 further comprises a driving piece 233, the driving piece 233 is arranged on the support frame 231 and is in transmission connection with the short-circuit piece 232, and the driving piece 233 is used for driving the short-circuit piece 232 to move relative to the support frame 231.

[0048] The driving piece 233 can be in clamping connection or bolted connection with the support frame 231, and the driving piece 233 can be in transmission connection with the short-circuit piece 232, so as to drive the short-circuit piece 232 to move relative to the support frame 231. When it is needed to short-circuit the to-be-tested piece 220 by the short-circuit control assembly 23, the controller can control the driving piece 233 to work, so as to drive the short-circuit piece 232 to move to a corresponding position relative to the support frame 231, so as to short-circuit the to-be-tested piece 220, and after the short-circuit test is completed, the controller can control the driving piece 233 to work, so as to drive the short-circuit piece 232 to move relative to the support frame 231 and be disconnected with the to-be-tested piece 220. By arranging the driving piece 233, the short-circuit test can be automated, manual wiring is not needed, the test efficiency can be improved, and the safety of the test personnel can be protected.

[0049] As some embodiments of the utility model, as shown in the figure, Figure 3 And Figure 4As shown in the short circuit control assembly 23 can also include a transmission member, the driving member 233 can be in transmission connection with the transmission member, the transmission member can be in transmission connection with the short circuit member 232, the driving member 233 can drive the transmission member to act, so that the transmission member drives the short circuit member 232 relative to the support frame 231 moves.

[0050] As some embodiments of the utility model, the driving member 233 can be configured as a motor, the transmission member can be configured as a gear and rack structure, the gear and the rack are engaged, the rack is fixedly connected with the short circuit member 232, and the driving member 233 can drive the gear to rotate around the gear axis line, when the driving member 233 drives the gear to rotate around the gear axis line, the rack can be driven to move, in turn, the short circuit member 232 is moved, to realize the effect that the short circuit member 232 is driven relative to the support frame 231 by the driving member 233.

[0051] As some other embodiments of the utility model, the driving member 233 can be configured as a motor, the transmission member can be configured as a lead screw connecting sleeve structure, the connecting sleeve is fixedly connected with the short circuit member 232, and the driving member 233 can drive the lead screw to rotate around its own axis line, when the lead screw rotates around its own axis line, the connecting sleeve sleeved on the lead screw can be driven to move, in turn, the short circuit member 232 is moved, to realize the effect that the short circuit member 232 is driven relative to the support frame 231 by the driving member 233.

[0052] As some other embodiments of the utility model, as shown in Figure 3 and Figure 4 The driving member 233 can be configured as a cylinder, the transmission member can be configured as a connecting shaft 237, the connecting shaft 237 is fixedly connected with the short circuit member 232, and the cylinder can drive the connecting shaft 237 to move, when the cylinder drives the connecting shaft 237 to move, the short circuit member 232 can be driven to move, to realize the effect that the short circuit member 232 is driven relative to the support frame 231 by the driving member 233.

[0053] In some embodiments of the utility model, as shown in Figure 3 and Figure 4 The support frame 231 includes: a support column 2311 and a support plate 2312, the support plate 2312 is connected with the support column 2311, the driving member 233 is arranged on the support plate 2312, and the short circuit member 232 is sleeved on the support column 2311 and can move along the extension direction of the support column 2311.

[0054] Among them, the support plate 2312 can be configured as a flat plate structure, the support plate 2312 can provide a larger mounting position, and the driving member 233 can be mounted on the support plate 2312.

[0055] As some embodiments of the present application, the test device 210 can further comprise a support platform 236, the support platform 236 can be fixedly connected with the sample loading platform 21, the upper end of the support column 2311 can be fixedly arranged on the support plate 2312, and the lower end of the support column 2311 can be fixedly arranged on the support platform 236, so that the support column 2311 can not only provide a mounting position, but also can raise the height of the support frame 231, so as to reduce the operation difficulty of the short circuit test.

[0056] The short circuit piece 232 is sleeved on the support column 2311, the support column 2311 guides the movement of the short circuit piece 232, when the driving piece 233 drives the short circuit piece 232 to move, the support column 2311 can drive the short circuit piece 232 to move along the extension direction of the support column 2311, so as to limit the movement direction of the short circuit piece 232, so that the short circuit piece 232 can be connected with the test piece 220 along the preset movement track and form a closed loop, so as to short circuit the test piece 220. By arranging the support plate 2312, the relative position of the driving piece 233 and the support column 2311 can be stabilized, so as to improve the structural stability of the short circuit control assembly 23. By arranging the support column 2311, the movement direction of the short circuit piece 232 can be limited, so that the short circuit piece 232 can move in a preset direction to short circuit the test piece 220 or open the test piece 220, which can improve the use reliability of the short circuit control assembly 23. Moreover, the support column 2311 and the support plate 2312 have simple structure and are convenient to manufacture and install.

[0057] As some embodiments of the present application, as shown in Figure 3 and Figure 4 The support column 2311 can be provided in plurality, and the number of the support column 2311 can be three, four, five or the like. In this way, the guiding effect of the support column 2311 on the short circuit piece 232 can be improved, the risk that the movement track of the short circuit piece 232 deviates from the preset track during the movement of the short circuit piece 232 driven by the driving piece 233 can be reduced, the use reliability of the short circuit control assembly 23 can be improved, and the structural stability of the support frame 231 can be improved.

[0058] In some embodiments of the present application, as shown in Figure 3 and Figure 4 The short circuit piece 232 comprises a guide plate 2321 and a connecting piece 2322, the guide plate 2321 is connected with the connecting piece 2322 and is configured as an insulating plate, the guide plate 2321 is sleeved on the support column 2311 and can move along the extension direction of the support column 2311, and the connecting piece 2322 can short circuit the two connecting posts 24.

[0059] The guide plate 2321 can be constructed as a flat plate. The guide plate 2321 can have multiple through holes, which correspond one-to-one with multiple support columns 2311 and cooperate with each other. The support columns 2311 pass through the corresponding through holes and guide the guide plate 2321. The guide plate 2321 can be snapped or glued to the connector 2322. The guide plate 2321 can be constructed as an insulating plate. The connector 2322 can be conductive and can be made of materials such as copper, silver, gold, graphite, and conductive plastic.

[0060] When the driving component 233 drives the shorting component 232 to move, the support column 2311 enables the guide plate 2321 to move along the extension direction of the support column 2311, thereby limiting the movement direction of the guide plate 2321. This allows the shorting component 232 to connect with the test piece 220 according to a preset movement trajectory and form a closed loop, thus short-circuiting the test piece 220. By setting the connector 2322, the effect of short-circuiting the test piece 220 can be achieved. By setting the insulated guide plate 2321, the risk of other non-energized components becoming energized can be reduced. For example, the risk of the support frame 231 becoming energized can be reduced, ensuring the safety of the testing process.

[0061] In some embodiments of this utility model, such as Figures 1-4 As shown, the short-circuit control assembly 23 also includes two connecting bars 234, which correspond one-to-one with and are electrically connected to two terminals 24, and the shorting element 232 can short-circuit the two connecting bars 234.

[0062] Both connecting bars 234 are conductive and can be made of materials such as copper, silver, or gold. Each connecting bar 234 corresponds one-to-one with and is electrically connected to one of the two terminals 24. When the shorting piece 232 is electrically connected to the two connecting bars 234, the test piece 220, the two terminals 24, the two connecting bars 234, and the shorting piece 232 form a closed circuit, causing the test piece 220 to be short-circuited. Compared to the terminals 24, the connecting bars 234 have a flatter surface and a larger surface area. Directly connecting the shorting piece 232 to the connecting bars 234 improves the reliability of the electrical connection compared to directly connecting the shorting piece 232 to the terminals 24. Furthermore, the contact area between the two connectors 234 and the shorting piece 232 is relatively large, which can reduce the contact resistance, reduce the risk of the two connectors 234 deteriorating due to overheating, and improve the service life of the two connectors 234. Compared with the two terminals 24, the two connectors 234 are easier to disassemble and replace, which can reduce the difficulty of maintenance and repair.

[0063] In addition, the connecting rows 234 are convenient to design shapes, for example, the connecting rows 234 can be designed as a "L" shape, so that the moving direction of the shorting piece 232 can be more selected, and the arrangement and modeling difficulty of the shorting piece 232 and the support frame 231 can be reduced.

[0064] In some embodiments of the utility model, as shown in Figures 1-4 The two connecting rows 234 are oppositely and spacedly arranged, each of the connecting rows 234 is provided with a matching piece 235 below, the matching piece 235 is electrically connected with the corresponding connecting row 234, and part of each matching piece 235 is located between the two connecting rows 234. The shorting piece 232 can short the two matching pieces 235.

[0065] The two connecting rows 234 are oppositely and spacedly arranged, the two connecting rows 234 can define an electrical connection area, the shorting piece 232 can move in the electrical connection area, each of the connecting rows 234 is provided with a matching piece 235 below, the matching piece 235 can be electrically connected with the corresponding connecting row 234, and part of each matching piece 235 is located between the two connecting rows 234. Along the height direction of the test device 210, part of the orthographic projection of the two matching pieces 235 is located between the orthographic projections of the two connecting rows 234. The shorting piece 232 can be moved to a position connected with the two matching pieces 235, so that the two matching pieces 235 are electrically connected, and the to-be-tested piece 220 is short-circuited. By arranging the matching piece 235, the to-be-tested piece 220 can be short-circuited conveniently, the operation difficulty of the test can be reduced, the efficiency and quality of the safety test process can be improved, and in addition, the surface of the matching piece 235 facing the to-be-tested piece 220 and the surface of the to-be-tested piece 220 facing the matching piece 235 can be matched and designed, so that the contact area of the matching piece 235 and the to-be-tested piece 220 is increased, and the reliability of the electrical connection is improved.

[0066] In some embodiments of the utility model, the heat management mechanism comprises: a refrigeration assembly, the refrigeration assembly comprises: a compressor, a condenser, an evaporator and a first driving piece 233, the compressor, the condenser and the evaporator form a first refrigeration circuit, the first refrigeration circuit flows with a refrigerant, the first driving piece 233, the evaporator and the containing space 211 form a second refrigeration circuit, the second refrigeration circuit flows with an insulating heat exchange medium, and the first refrigeration circuit and the second refrigeration circuit exchange heat through the evaporator, and / or the heat management mechanism further comprises: a heating assembly, the heating assembly comprises: a heater and a second driving piece 233, the second driving piece 233, the heater and the containing space 211 form a heating circuit, and the heating circuit flows with the insulating heat exchange medium.

[0067] The heat management mechanism can lower the temperature of the insulation heat exchange medium through the refrigeration assembly, specifically, the compressor, the condenser and the evaporator can form a first refrigeration circuit, the first refrigeration circuit can flow with the refrigerant, the compressor can be used for compressing the refrigerant to increase the pressure and temperature of the refrigerant to form high-temperature and high-pressure refrigerant, the condenser can be used for reducing the temperature of the high-temperature and high-pressure refrigerant compressed by the compressor to dissipate the heat of the high-temperature and high-pressure refrigerant to form low-temperature and high-pressure liquid refrigerant, the first driving member 233, the evaporator and the containing space 211 form a second refrigeration circuit, and the second refrigeration circuit can flow with the insulation heat exchange medium.

[0068] The evaporator can vaporize the low-temperature and low-pressure liquid refrigerant to absorb the heat of the insulation heat exchange medium to lower the temperature of the insulation heat exchange medium, the first driving member 233 can drive the insulation heat exchange medium to flow in the second refrigeration circuit to flow the cooled insulation heat exchange medium with a lower temperature to the containing space 211 and flow the insulation heat exchange medium with a higher temperature not cooled in the containing space 211 to the evaporator, thereby achieving the effect of lowering the overall temperature of the insulation heat exchange medium in the containing space 211 to make the to-be-tested member 220 in a required temperature range for testing to achieve the refrigeration effect.

[0069] The heat management mechanism can raise the temperature of the insulation heat exchange medium through the heating assembly, the second driving member 233, the heater and the containing space 211 form a heating circuit, the heating circuit can flow with the insulation heat exchange medium, the heater can heat the insulation heat exchange medium in the heating circuit to raise the temperature of the insulation heat exchange medium, and the second driving member 233 can drive the insulation heat exchange medium in the heating circuit to flow to flow the heated insulation heat exchange medium with a higher temperature to the containing space 211 and flow the insulation heat exchange medium with a lower temperature not heated in the containing space 211 to the heater, thereby achieving the effect of raising the overall temperature of the insulation heat exchange medium in the containing space 211 to make the to-be-tested member 220 in a required temperature range for testing.

[0070] As some embodiments of the present application, the temperature range of the insulation heat exchange medium during heating test can be 130 DEG C to 300 DEG C.

[0071] In the above embodiments, by setting the refrigeration assembly and the heating assembly, the temperature of the insulation heat exchange medium in the containing space 211 can be adjusted according to the test requirement, thereby adjusting the temperature of the environment of the to-be-tested member 220 to make the to-be-tested member 220 work in a corresponding temperature range.

[0072] The following introduces a specific embodiment of testing the safety of the to-be-tested member 220 by the test device 210 of the present application, the to-be-tested member 220 is a single battery, and the temperature range of the safety test is -40 DEG C to 300 DEG C.

[0073] First, the single battery is placed in the accommodation space 211, the center position of the single battery is coincided with the center position of the accommodation space 211, and the positive and negative pole columns of the single battery are electrically connected with the two wiring columns 24 extending into the accommodation space 211.

[0074] Then, the single battery is immersed in the insulation heat exchange medium, and the temperature of the insulation heat exchange medium in the accommodation space 211 is adjusted to the required temperature for testing by the heat management mechanism.

[0075] Then, the single battery is subjected to overcharge test, overdischarge test, overcurrent test and short circuit test by using the charge-discharge test equipment 22 and the short circuit control assembly 23, and the single battery is subjected to overheat test by the heat management mechanism.

[0076] Finally, the voltage, temperature and other data during the single battery test are recorded, and a video can be recorded for subsequent research and analysis of the test operation and test data.

[0077] In the description of the utility model, it is to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0078] In the description of the utility model, "first feature" and "second feature" can include one or more features.

[0079] In the description of the utility model, "a plurality of" means two or more.

[0080] In the description of the utility model, "above" or "below" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature therebetween.

[0081] In the description of the utility model, "above", "above" and "above" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.

[0082] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0083] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A testing device (210), characterized in that, include: A sample carrier platform (21) defines a receiving space (211) adapted to receive a test specimen (220); A thermal management mechanism, which is in communication with the containment space (211) and is used to drive an insulating heat exchange medium to flow between the thermal management mechanism and the containment space (211); A charge-discharge test device (22), wherein the charge-discharge test device (22) is adapted to be electrically connected to the test piece (220); A short-circuit control component (23) is adapted to be electrically connected to the test piece (220) to short-circuit the test piece (220).

2. The testing apparatus (210) according to claim 1, characterized in that, Also includes: Two terminals (24) are provided, which pass through the side wall of the sample platform (21) and have part of their structure extending into the receiving space (211). The terminals (24) are adapted to be electrically connected to the test piece (220). The charge and discharge test equipment (22) and the short circuit control component (23) can both be electrically connected to the terminals (24).

3. The testing apparatus (210) according to claim 2, characterized in that, Also includes: The closing device (25) includes a terminal (24) comprising a first sub-terminal (241) and a second sub-terminal (242), wherein the closing device (25) is connected between the first sub-terminal (241) and the second sub-terminal (242), and the closing device (25) is capable of controlling the on / off state of the first sub-terminal (241) and the second sub-terminal (242).

4. The testing apparatus (210) according to claim 2, characterized in that, The short-circuit control component (23) includes a support frame (231) and a shorting member (232), wherein the shorting member (232) is movably disposed on the support frame (231) and the shorting member (232) is capable of short-circuiting the two terminals (24).

5. The testing apparatus (210) according to claim 4, characterized in that, The short-circuit control component (23) further includes a drive member (233), which is disposed on the support frame (231) and is connected to the shorting member (232) in a transmission manner. The drive member (233) is used to drive the shorting member (232) to move relative to the support frame (231).

6. The testing apparatus (210) according to claim 5, characterized in that, The support frame (231) includes a support column (2311) and a support plate (2312), the support plate (2312) is connected to the support column (2311), the driving member (233) is disposed on the support plate (2312), and the short connector (232) is sleeved on the support column (2311) and can move along the extension direction of the support column (2311).

7. The testing apparatus (210) according to claim 6, characterized in that, The shorting member (232) includes a guide plate (2321) and a connector (2322). The guide plate (2321) is connected to the connector (2322) and is constructed as an insulating plate. The guide plate (2321) is sleeved on the support column (2311) and can move along the extension direction of the support column (2311). The connector (2322) can short-circuit the two terminals (24).

8. The testing apparatus (210) according to claim 4, characterized in that, The short-circuit control component (23) further includes: two connecting bars (234), the two connecting bars (234) correspond one-to-one with the two terminals (24) and are electrically connected, and the shorting member (232) can short-circuit the two connecting bars (234).

9. The testing apparatus (210) according to claim 8, characterized in that, Two connecting bars (234) are arranged opposite to each other and spaced apart. Each connecting bar (234) has a mating part (235) below it. The mating part (235) is electrically connected to the corresponding connecting bar (234). A portion of each mating part (235) is located between the two connecting bars (234). The shorting part (232) can short-circuit the two mating parts (235).

10. The testing apparatus (210) according to any one of claims 1-9, characterized in that, The thermal management mechanism includes a refrigeration component, which includes a compressor, a condenser, an evaporator, and a first drive unit (233). The compressor, the condenser, and the evaporator form a first refrigeration circuit, in which a refrigerant flows. The first drive unit (233), the evaporator, and the accommodating space (211) form a second refrigeration circuit, in which the insulating heat exchange medium flows. The first refrigeration circuit and the second refrigeration circuit exchange heat through the evaporator. And / or, the thermal management mechanism further includes: a heating component, the heating component including: a heater, a second drive member (233), the second drive member (233), the heater and the receiving space (211) forming a heating circuit, the insulating heat exchange medium flowing in the heating circuit.

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