Spot inspection device and resistance test system

Abstract

The invention relates to the technical field of battery production and processing equipment, and discloses a point inspection device and a resistance test system.The point inspection device comprises a test standard block, the test standard block comprises a simulation battery, a first tab, a second tab, a resistance standard block, a first terminal and a second terminal, and the resistance standard block is electrically connected with the first terminal and the first tab; the second terminal is electrically connected with the second tab; the switching mechanism comprises a moving module, a first connector and a second connector, the moving module comprises a sliding block, a first driving part and a second driving part, the sliding block can move in the third direction, the first driving part can drive the first connector to move in the second direction, and the second driving part can drive the second connector to move in the second direction; and the first connector is electrically connected with the second connector. And the first connector is in contact with different first terminals, so that each resistor standard block is sequentially communicated with the first tab and the second tab, the manual switching test time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production and processing equipment, and particularly to an inspection device and a resistance testing system. Background Art

[0002] In the production process of lithium battery cells, the cells need to go through a hot pressing process. The hot pressing process mainly heats and presses the soft cells to compact the cells and simultaneously conducts a resistance test on the cells. The resistance testing system consists of a resistance testing instrument, connecting lines, and test probes. If the resistance testing system fails abnormally or inaccurately, resulting in a difference between the detected cell resistance and the actual resistance, there is a risk of flowing short-circuited cells to subsequent processes. Installing short-circuited cells on electrical equipment poses a safety hazard to users.

[0003] Therefore, before normal production of cells by the hot press, a standard resistance block is used to inspect the resistance testing system to check whether the inspection data is consistent with the standard resistance value to determine whether the detection is normal. Generally, when conducting an inspection, resistance standard blocks of multiple gradients are tested on the resistance testing system to check the ability of the resistance testing system to test resistances of various gradients. During the inspection, an operator needs to manually place a resistance standard block on the hot pressing station, manually operate the resistance testing system for inspection, and then place the next gradient standard block for continued testing. This process needs to be repeated five times, and since there are many hot pressing stations, it is very time-consuming and laborious, affecting production efficiency. Summary of the Invention

[0004] The object of the present invention is to provide an inspection device to solve the problem of time-consuming and laborious inspection during the resistance test of the hot press in the prior art, which affects production efficiency. The present invention also provides a resistance testing system using this inspection device.

[0005] To achieve the above object, the present invention provides an inspection device for the resistance test of a hot press. The inspection device has intersecting second and third directions and includes:

[0006] A test standard block, which includes an analog battery, a first tab, a second tab, a resistance standard block, a first terminal, and a second terminal. A plurality of resistance standard blocks are arranged at intervals along the second direction, and a plurality of first terminals are arranged at intervals along the third direction. The resistance standard blocks are electrically connected to the first terminals one by one, each of the resistance standard blocks is electrically connected to the first tab respectively, and the second terminal is electrically connected to the second tab;

[0007] Switching mechanism, the switching mechanism includes a moving module, a first connector and a second connector. The moving module includes a slider, a first driving member and a second driving member. The slider can move along the third direction. The first driving member is fixedly connected to the slider. The first driving member is drivingly connected to the first connector. The first driving member can drive the first connector to move along the second direction. The second driving member is drivingly connected to the second connector. The second driving member can drive the second connector to move along the second direction. The first connector is electrically connected to the second connector.

[0008] Preferably, the simulated battery is provided with a plurality of accommodation cavities spaced along the second direction, and each of the resistance standard blocks corresponds to each of the accommodation cavities one by one, and the resistance standard blocks are embedded in the accommodation cavities.

[0009] Preferably, the test standard block is further provided with a connecting wire and a wire groove. The connecting wire is embedded in the wire groove along the first direction. The wire groove communicates with the accommodation cavity. The first ear, the resistance standard block and the first terminal are connected in series by the connecting wire. The second ear and the second terminal are connected in series by the connecting wire; the first direction intersects with the second direction and the third direction pairwise.

[0010] Preferably, the moving module further includes a frame and a moving motor. The moving motor is fixedly connected to the frame. The slider is slidably assembled to the frame along the third direction. The moving motor is drivingly connected to the slider. The moving motor drives the slider to move along the third direction. The second driving member is fixedly connected to the frame.

[0011] Preferably, the frame is provided with a guide rail extending along the third direction. The slider is slidably connected to the guide rail. Along the third direction, the second driving member is arranged at one end of the guide rail away from the moving motor.

[0012] Preferably, the first driving member and the second driving member are one of a cylinder, an electric push rod or an oil cylinder.

[0013] The present invention also provides a resistance test system for resistance testing of a hot press, including the inspection device according to any one of the above technical solutions. The resistance test system further includes a hot pressing mechanism. The hot pressing mechanism includes an upper hot pressing plate, a lower hot pressing plate, a first probe assembly and a second probe assembly. The upper hot pressing plate and the lower hot pressing plate are spaced along the first direction. The first probe assembly and the second probe assembly are respectively fixedly connected to the upper hot pressing plate;

[0014] The described test standard block is placed on the lower hot pressing plate. The upper hot pressing plate can move along the first direction to drive the first probe assembly to be electrically connected to the first tab and drive the second probe assembly to be electrically connected to the second tab. The first direction intersects with the second direction and the third direction pairwise.

[0015] Preferably, both the first probe assembly and the second probe assembly include a telescopic cylinder and a test probe. The telescopic cylinder is fixedly connected to the upper hot pressing plate. The telescopic cylinder is in transmission connection with the test probe, and the telescopic cylinder can drive the test probe to move along the first direction.

[0016] Preferably, the hot pressing mechanism further includes an assembly plate and a pressure cylinder fixedly connected to the assembly plate. The pressure cylinder is in transmission connection with the upper hot pressing plate, and the pressure cylinder can drive the upper hot pressing plate to reciprocate along the first direction.

[0017] Preferably, the hot pressing mechanism further includes guide rods. There are multiple guide rods, and each guide rod is fixedly connected to the upper hot pressing plate. The assembly plate is further provided with guide holes, and each guide rod penetrates through the guide hole along the first direction.

[0018] Compared with the prior art, the inspection device and the resistance test system according to the embodiments of the present invention have the beneficial effects as follows: A plurality of resistance standard blocks are arranged at intervals along the second direction on the test standard block, so that a plurality of resistance standard blocks are integrally arranged in the test standard block. Since the resistance standard blocks are electrically connected between each first terminal and the first tab, and the second tab is connected to the second terminal, the first connection head of the switching mechanism can move along the third direction driven by the slider, so that the first connection head is aligned with each first terminal along the second direction respectively. The first driving member can drive the first connection head to be electrically connected to each first terminal in sequence, and the second driving member drives the second connection head to be connected to the second terminal. Since the first connection head and the second connection head are electrically connected, each resistance standard block is electrically connected to the second tab through the first terminal, the first connection head, the second connection head, and the second terminal, that is, each resistance standard block is connected in series between the first tab and the second tab. When it is necessary to inspect the resistance test system, the first connection head contacts different first terminals, so that each resistance standard block is sequentially connected to the first tab and the second tab, changing the internal resistance of the simulated battery. The hot pressing mechanism contacts the first tab and the second tab, and the resistance test system performs resistance value testing. There is no need to manually replace the resistance standard block and automatically switch to the next resistance value, greatly reducing the manual switching test time and improving the production efficiency. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the resistance test system of the present invention;

[0020] Figure 2 is Figure 1 a schematic structural view of the hot pressing mechanism of the resistance testing system of

[0021] Figure 3 is Figure 2 a schematic structural view of the first probe assembly and the second probe assembly of the hot pressing mechanism of

[0022] Figure 4 is Figure 1 a schematic structural view of the test standard block of the resistance testing system of

[0023] Figure 5 is Figure 4 a top view of the test standard block of

[0024] Figure 6 is Figure 4 a schematic structural view of the test standard block after omitting the simulated battery of

[0025] Figure 7 is Figure 1 a schematic structural view of the switching mechanism of the resistance testing system of

[0026] Figure 8 a schematic view of the state when the first probe assembly and the second probe assembly of the resistance testing system of the present invention are in contact with the first tab and the second tab

[0027] Figure 9 is Figure 8 a schematic structural view after omitting the upper hot pressing plate and the pressure cylinder

[0028] Figure 10 a schematic view of the state when the resistance testing system of the present invention is connected to the first terminal and the second terminal at the first connection point and the second connection point respectively

[0029] Figure 11 is Figure 10 a schematic view of the state when the first connection point is connected to different first terminals of

[0030] In the figure, 1 is a hot pressing mechanism, 11 is an upper hot pressing plate, 12 is a lower hot pressing plate, 13 is a first probe assembly, 14 is a second probe assembly, 15 is a telescopic air cylinder, 16 is a test probe, 17 is a pressure air cylinder, 18 is an assembly plate, 181 is a guiding hole, 19 is a guiding rod, 2 is a test standard block, 21 is a simulated battery, 211 is a receiving cavity, 22 is a first ear, 23 is a second ear, 24 is a resistance standard block, 25 is a first terminal, 26 is a second terminal, 27 is a connecting wire, 28 is a wire groove, 3 is a switching mechanism, 31 is a moving module, 311 is a frame, 312 is a moving motor, 313 is a slider, 314 is a first driving part, 315 is a second driving part, 316 is a guide rail, 32 is a first connector, 33 is a second connector, Z is a first direction, Y is a second direction, and X is a third direction. Detailed implementation manners

[0031] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0032] A preferred embodiment of a spot inspection device of the present invention is as Figures 1 to 11 shown. The spot inspection device is used for resistance testing of a hot press. The spot inspection device includes a test standard block 2 and a switching mechanism 3. The test standard block 2 is used to simulate a battery cell whose resistance needs to be measured, and the switching mechanism 3 is used to change the resistance value of the test standard block 2, so as to eliminate the need for manual resistance value switching and reduce the test time of manual switching.

[0033] The spot inspection device has a first direction Z, a second direction Y, and a third direction X that intersect pairwise. In this embodiment, the first direction Z is the up and down direction of the spot inspection device, the second direction Y is the front and back direction of the spot inspection device, the third direction X is the left and right direction of the spot inspection device, and the first direction Z, the second direction Y, and the third direction X are perpendicular to each other.

[0034] As Figures 4 to 6 shown, the test standard block 2 includes a simulated battery 21, a first ear 22, a second ear 23, a resistance standard block 24, a first terminal 25, and a second terminal 26. The simulated battery 21 is the structural basis of the test standard block 2. The first ear 22, the second ear 23, the resistance standard block 24, the first terminal 25, and the second terminal 26 are all arranged on the simulated battery 21. The first ear 22 and the second ear 23 are used for electrical connection with the hot pressing mechanism 1 to supply the hot pressing mechanism 1 to measure the resistance value of the resistance standard block 24. The first terminal 25 and the second terminal 26 are used for electrical connection with the switching mechanism 3 to enable electrical connection between the first ear 22 and the second ear 23. The size of the simulated battery 21 is the same as the size of the battery cell to be produced, so as to facilitate matching with the hot pressing mechanism 1.

[0035] A plurality of resistance standard blocks 24 are arranged at intervals along the second direction Y, and a plurality of first terminals 25 are arranged at intervals along the third direction X. The resistance standard blocks 24 are electrically connected to the first terminals 25 in a one-to-one correspondence. Each resistance standard block 24 is electrically connected to the first tab 22 respectively, that is, one electrode of each resistance standard block 24 is connected to each first terminal 25 in a one-to-one correspondence, and the other electrode is connected to the first tab 22, ensuring that one resistance standard block 24 is connected between the first tab 22 and each first terminal 25.

[0036] The second terminal 26 is electrically connected to the second tab 23. When measuring the resistance value of the analog battery 21, the first tab 22 and the second tab 23 of the standard battery are used as measurement ends and connected to the hot pressing mechanism 1. At this time, the first tab 22 and the second tab 23 are respectively connected to the two electrodes of the resistance standard block 24 to ensure that the hot pressing mechanism 1 measures the resistance value of the corresponding resistance standard block 24. After the switching mechanism 3 connects the first terminal 25 and the second terminal 26, the second tab 23 is connected to one electrode of the resistance standard block 24 through the first terminal 25 and the second terminal 26, that is, the resistance standard block 24 is connected in series between the first tab 22 and the second tab 23, which can meet the resistance value test requirements.

[0037] The resistance value of each resistance standard block 24 is different. In this embodiment, there are five resistance standard blocks 24, and the resistance values of the five resistance standard blocks 24 are 0 MΩ, 0.1 MΩ, 1 MΩ, 5 MΩ, and 10 MΩ respectively. By connecting different first terminals 25 to the second terminal 26, the switching mechanism 3 can connect resistance standard blocks 24 with different resistance values in series between the first tab 22 and the second tab 23 to achieve automatic switching of the resistance value test.

[0038] As Figure 7 shown, the switching mechanism 3 includes a moving module 31, a first connector 32, and a second connector 33. The moving module 31 is used to drive the first connector 32 and the second connector 33 to move. The first connector 32 is used to be electrically connected to the first terminal 25, and the second connector 33 is used to be electrically connected to the second terminal 26, and the first connector 32 and the second connector 33 are electrically connected between them. When the first connector 32 is connected to the first terminal 25 and the second connector 33 is connected to the second terminal 26, a current path is formed between the first terminal 25, the first connector 32, the second connector 33, the second terminal 26, and the second tab 23.

[0039] The moving module 31 includes a slider 313, a first driving member 314, and a second driving member 315. The first driving member 314 is fixedly connected to the slider 313, the first driving member 314 is in transmission connection with the first connector 32, and the second driving member 315 is in transmission connection with the second connector 33. The slider 313 can move along the third direction X, the first driving member 314 can drive the first connector 32 to move along the second direction Y, and the second driving member 315 can drive the second connector 33 to move along the second direction Y.

[0040] During the process of the slider 313 moving along the third direction X, it can synchronously drive the first driving member 314 and the first connector 32 to move along the third direction X, so that the first connector 32 is respectively opposite to each first terminal 25 arranged at intervals along the third direction X along the second direction Y during the movement. At this time, the first driving member 314 drives the first connector 32 to move along the second direction Y, and the first connector 32 and the first terminal 25 can be inserted and matched to achieve electrical connection. The first connector 32 contacts different first terminals 25, so that each resistance standard block 24 is sequentially connected to the first tab 22 and the second tab 23. The second connector 33 and the second terminal 26 are arranged opposite to each other along the second direction Y and are always aligned. During the resistance test, the second driving member 315 directly drives the second connector 33 to move along the second direction Y, and the second connector 33 and the second terminal 26 can be inserted and matched to achieve electrical connection.

[0041] The test standard block 2 of the inspection device is provided with a plurality of resistance standard blocks 24 arranged at intervals in the second direction Y, so that the plurality of resistance standard blocks 24 are integrally arranged in the test standard block 2. Since the resistance standard blocks 24 are electrically connected between the first terminals 25 and the first ear 22, and the second ear 23 is connected to the second terminal 26, the first connector 32 of the switching mechanism 3 can move along the third direction X driven by the slider 313, so that the first connector 32 is aligned with each of the first terminals 25 along the second direction Y respectively. The first driving member 314 can drive the first connector 32 to be electrically connected to each of the first terminals 25 in sequence, and the second driving member 315 drives the second connector 33 to be connected to the second terminal 26. Since the first connector 32 and the second connector 33 are electrically connected, each of the resistance standard blocks 24 is electrically connected to the second ear 23 through the first terminal 25, the first connector 32, the second connector 33, and the second terminal 26, that is, each of the resistance standard blocks 24 is connected in series between the first ear 22 and the second ear 23. When it is necessary to inspect the resistance test system, the first connector 32 contacts different first terminals 25, so that each of the resistance standard blocks 24 is sequentially connected to the first ear 22 and the second ear 23, changing the internal resistance of the simulated battery 21. The hot pressing mechanism 1 contacts the first ear 22 and the second ear 23, and the resistance test system performs a resistance value test. There is no need to manually replace the resistance standard block 24, and the next resistance value is automatically switched, greatly reducing the manual switching test time and improving the production efficiency.

[0042] In some embodiments, the simulated battery 21 is provided with a plurality of receiving cavities 211 arranged at intervals in the second direction Y, and each resistance standard block 24 corresponds to each receiving cavity 211 one by one, and the resistance standard block 24 is embedded in the receiving cavity 211.

[0043] Setting a plurality of receiving cavities 211 in the simulated battery 21 corresponding to the resistance standard blocks 24 one by one can separate the resistance standard blocks 24 from each other and increase the safety distance. After the resistance standard block 24 is embedded in the receiving cavity 211, the surface of the simulated battery 21 is made flat, ensuring that the hot pressing mechanism 1 can contact the first ear 22 and the second ear 23 to complete the resistance value test.

[0044] In some embodiments, the test standard block 2 is further provided with a connecting wire 27 and a wire groove 28. The connecting wire 27 is embedded in the wire groove 28 along the first direction Z, and the wire groove 28 communicates with the receiving cavity 211. The first ear 22, the resistance standard block 24 and the first terminal 25 are connected in series by the connecting wire 27, and the second ear 23 and the second terminal 26 are connected in series by the connecting wire 27.

[0045] Connect the connecting wire 27 and the wire groove 28 in the test standard block 2. The connecting wire 27 can be electrically connected to the first tab 22, the resistance standard block 24, and the first terminal 25, and at the same time is electrically connected to the second tab 23 and the second terminal 26, ensuring that the first tab 22 and the second tab 23 are respectively electrically connected to one electrode of the resistance standard block 24 during the test. Meanwhile, the connection method between the various components in the test standard block 2 is simplified, facilitating maintenance and reducing the manufacturing and maintenance costs. When the connecting wire 27 is embedded in the wire groove 28, the wire groove 28 can be used to protect the connecting wire 27 to prevent it from being damaged due to exposure.

[0046] In some embodiments, the moving module 31 further includes a frame 311 and a moving motor 312. The moving motor 312 is fixedly connected to the frame 311. The slider 313 is slidably assembled to the frame 311 along the third direction X. The moving motor 312 is drivingly connected to the slider 313. The moving motor 312 drives the slider 313 to move along the third direction X. The second driving member 315 is fixedly connected to the frame 311.

[0047] The frame 311 forms the structural basis of the moving module 31. The moving motor 312, the slider 313, and the second driving member 315 are all assembled on the frame 311, integrating the mechanism of the moving module 31 for convenient use. The moving motor 312 is drivingly connected to the slider 313. By changing its own rotation direction, the moving motor 312 can adjust the moving direction of the slider 313, causing the slider 313 to reciprocate along the third direction X.

[0048] The second driving member 315 is fixedly connected to the frame 311. During the resistance test, the position of the second connector 33 in the third direction X is different. Therefore, the second driving member 315 only needs to drive the second connector 33 to move along the second direction Y, and the position of the second driving member 315 itself does not need to be changed, simplifying the control system and facilitating use.

[0049] In some embodiments, the frame 311 is provided with a guide rail 316 extending along the third direction X. The slider 313 is slidably connected to the guide rail 316. Along the third direction X, the second driving member 315 is provided at one end of the guide rail 316 away from the moving motor 312.

[0050] A slide rail extending along the third direction X is provided on the frame 311. The slider 313 is in guiding cooperation with the slide rail. The slide rail is used to limit the sliding direction of the slider 313 to increase the stability of the movement of the slider 313. The second driving member is provided at one end of the guide rail 316 away from the moving motor 312, which can prevent the second driving member 315 from interfering with the movement of the slider 313 and increase the movement range of the slider 313.

[0051] In some embodiments, the first driving member 314 and the second driving member 315 are one of a cylinder, an electric push rod, or an oil cylinder.

[0052] As common linear drive mechanisms, cylinders, electric push rods, and oil cylinders can all be used as an embodiment of the first drive member 314 and the second drive member 315. Their control processes are mature and easy to operate.

[0053] The present invention also provides a resistance testing system for resistance testing of a hot press, including a spot-check device and a hot pressing mechanism 1. The specific structure of the spot-check device is the same as that of the spot-check device in any of the above embodiments, and will not be repeated here.

[0054] As Figures 1 to 3 shown in the figure, the hot pressing mechanism 1 includes an upper hot pressing plate 11, a lower hot pressing plate 12, a first probe assembly 13, and a second probe assembly 14. The upper hot pressing plate 11 and the lower hot pressing plate 12 are spaced apart along the first direction Z. The first probe assembly 13 and the second probe assembly 14 are respectively fixedly connected to the upper hot pressing plate 11. The upper hot pressing plate 11 can move along the first direction Z. During the process of the upper hot pressing plate 11 moving along the first direction Z, it can drive the first probe assembly 13 and the second probe assembly 14 to move synchronously along the first direction Z.

[0055] The lower hot pressing plate 12 is used to place the test standard block 2 of the spot-check device. After the test standard block 2 is placed on the lower hot pressing plate 12, the first ear 22 and the first probe assembly 13 are opposite to each other along the first direction Z, and the second probe assembly 14 and the second ear 23 are opposite to each other along the first direction Z. When the first hot pressing plate drives the first probe assembly 13 and the second probe assembly 14 to move along the first direction Z, the first probe assembly 13 is electrically connected to the first ear 22, and the second probe assembly 14 is electrically connected to the second ear 23, so as to test the resistance value of the resistance standard block 24 connected in series between the first ear 22 and the second ear 23.

[0056] In some embodiments, both the first probe assembly 13 and the second probe assembly 14 include a telescopic cylinder 15 and a test probe 16. The telescopic cylinder 15 is fixedly connected to the upper hot pressing plate 11, and the telescopic cylinder 15 is in transmission connection with the test probe 16. The telescopic cylinder 15 can drive the test probe 16 to move along the first direction Z.

[0057] Both the first probe assembly 13 and the second probe assembly 14 are formed by a telescopic cylinder 15 and a test probe 16. When the upper hot pressing plate 11 moves along the first direction Z, the telescopic cylinder 15 and the test probe 16 move synchronously. When the upper hot pressing plate 11 moves to the lowest position, if there is a gap, poor contact, or insufficient contact force between the first ear 22 and the second ear 23 of the test standard block 2 and the test probe 16, the telescopic cylinder 15 can continue to drive the test probe 16 to move along the first direction Z to keep in close contact with the first ear 22 and the second ear 23, thereby increasing the accuracy of the test results.

[0058] In some embodiments, the hot pressing mechanism 1 also includes an assembly plate 18 and a pressure cylinder 17 fixedly connected to the assembly plate 18. The pressure cylinder 17 is transmission-connected to the upper hot pressing plate 11, and the pressure cylinder 17 can drive the upper hot pressing plate 11 to reciprocate along the first direction Z.

[0059] The assembly plate 18 provides an assembly base for the pressure cylinder 17. The pressure cylinder 17 is arranged along the first direction Z. The pressure cylinder 17 can drive the upper hot platen 11 to move along the first direction Z, so as to drive the first probe assembly 13 and the second probe assembly 14 to move synchronously. The pressure cylinder 17 provides a driving force for the movement of the upper hot platen 11. The pressure cylinder 17 has the characteristics of high sensitivity and fast response.

[0060] In some embodiments, the hot pressing mechanism 1 further includes a guide rod 19, there are multiple guide rods 19, each guide rod 19 is fixedly connected to the upper hot pressing plate 11; the assembly plate 18 is also provided with a guide hole 181, each guide rod 19 passes through the guide hole 181 along the first direction Z.

[0061] The upper hot platen 11 and the assembly plate 18 are guided by the guide holes 181 and the guide rods 19, which can limit the direction of the upper hot platen 11 when it moves along the first direction Z, and increase the stability of the movement of the upper hot platen 11. In this example, there are four guide rods 19 and four guide holes 181, which are spaced apart in a matrix.

[0062] The working process of the present invention is: when the resistance test system is inspected, Figure 8 As shown, the test standard block 2 is placed on the lower hot pressing plate 12, the pressure cylinder 17 works to drive the upper hot pressing plate 11 to move along the first direction Z, the telescopic cylinder 15 of the first probe assembly 13 and the second probe assembly 14 works to drive the test probe 16 to contact the first pole ear 22 and the second pole ear 23 along the first direction Z; the second driving member 315 works and drives the second connector 33 to move along the second direction Y, so that the second connector 33 and the second terminal 26 are plugged in along the second direction Y; as shown Figure 9 and Figure 10 As shown, the moving motor 312 drives the slider 313 to move along the third direction X, so that the first connector 32 is opposite to one of the first terminals 25 along the second direction Y, and the first driving member 314 works and drives the first connector 32 to move along the second direction Y, so that the first connector 32 is plugged into the first terminal 25 along the second direction Y. At this time, the first pole ear 22, the second pole ear 23 and the resistance standard block 24 are connected in series, and the resistance tester can detect the resistance value of the resistance standard; Figure 11As shown, after the resistance value of a resistance standard block 24 is tested, and so on, the moving motor 312 drives the slider 313 to move along the third direction X, so that the first connector 32 and another first terminal 25 are opposite to each other along the second direction Y. The first driving member 314 drives the first connector 32 to move along the second direction Y and electrically connect with the first terminal 25, so that the first tab 22, the second tab 23 and another resistance standard block 24 are connected in series, and the resistance value test is completed. According to the above method, the resistance value tests of each resistance standard block 24 can be sequentially completed. After the test is completed, the test standard block 2 can be removed from the lower hot pressing plate 12.

[0063] In summary, the embodiment of the present invention provides a spot inspection device and a resistance test system. A plurality of resistance standard blocks are arranged at intervals along the second direction on the test standard block, so that a plurality of resistance standard blocks are integrally arranged in the test standard block. Since the resistance standard blocks are electrically connected between the first terminals and the first tabs, and the second tab is connected to the second terminal, the first connector of the switching mechanism can move along the third direction driven by the slider, so that the first connector and each first terminal are aligned along the second direction respectively. The first driving member can drive the first connector to be electrically connected with each first terminal in turn, and the second driving member drives the second connector to be connected with the second terminal. Since the first connector and the second connector are electrically connected, each resistance standard block is electrically connected to the second tab through the first terminal, the first connector, the second connector and the second terminal, that is, each resistance standard block is connected in series between the first tab and the second tab. When it is necessary to perform spot inspection on the resistance test system, the first connector contacts different first terminals, so that each resistance standard block is sequentially connected to the first tab and the second tab, changing the internal resistance of the simulated battery. The hot pressing mechanism contacts the first tab and the second tab, and the resistance test system performs resistance value test. There is no need to manually replace the resistance standard block and automatically switch to the next resistance value, which greatly reduces the manual switching test time and improves the production efficiency.

[0064] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A spot inspection device for testing the resistance of a hot press, characterized in that: The inspection device has a second direction and a third direction intersecting each other, including: A test standard block, the test standard block comprising a simulated battery, a first pole lug, a second pole lug, a resistance standard block, a first terminal and a second terminal, a plurality of the resistance standard blocks are arranged at intervals along the second direction, a plurality of the first terminals are arranged at intervals along the third direction, the resistance standard blocks are electrically connected to the first terminals in a one-to-one correspondence, each of the resistance standard blocks is electrically connected to the first pole lug, and the second terminal is electrically connected to the second pole lug; A switching mechanism, the switching mechanism includes a moving module, a first connector and a second connector, the moving module includes a slider, a first driving member and a second driving member, the slider can move along the third direction, the first driving member is fixedly connected to the slider, the first driving member is transmission-connected to the first connector, the first driving member can drive the first connector to move along the second direction, the second driving member is transmission-connected to the second connector, the second driving member can drive the second connector to move along the second direction, and the first connector is electrically connected to the second connector.

2. The inspection device according to claim 1, characterized in that: The simulated battery is provided with a plurality of accommodating cavities spaced apart along the second direction, each of the resistance standard blocks corresponds to each of the accommodating cavities one by one, and the resistance standard blocks are embedded in the accommodating cavities.

3. The inspection device according to claim 2, characterized in that: The test standard block is further provided with a connecting wire and a wire groove, wherein the connecting wire is embedded in the wire groove along a first direction, the wire groove is connected to the accommodating cavity, the first pole lug, the resistance standard block and the first terminal are connected in series by the connecting wire, and the second pole lug and the second terminal are connected in series by the connecting wire; The first direction intersects with the second direction and the third direction in pairs.

4. The inspection device according to any one of claims 1 to 3, characterized in that: The mobile module also includes a frame and a mobile motor, the mobile motor is fixedly connected to the frame, the slider is slidably assembled on the frame along the third direction, the mobile motor is transmission-connected to the slider, the mobile motor drives the slider to move along the third direction, and the second driving member is fixedly connected to the frame.

5. The inspection device according to claim 4, characterized in that: The frame is provided with a guide rail extending along the third direction, the slider is slidably connected to the guide rail, and along the third direction, the second driving member is arranged at an end of the guide rail away from the moving motor.

6. The inspection device according to any one of claims 1 to 3, characterized in that: The first driving member and the second driving member are one of a pneumatic cylinder, an electric push rod or an oil cylinder.

7. A resistance testing system for hot press resistance testing, characterized in that: The inspection device according to any one of claims 1 to 6 is included, wherein the resistance testing system further comprises a hot pressing mechanism, wherein the hot pressing mechanism comprises an upper hot pressing plate, a lower hot pressing plate, a first probe assembly and a second probe assembly, wherein the upper hot pressing plate and the lower hot pressing plate are spaced apart along a first direction, and the first probe assembly and the second probe assembly are respectively fixedly connected to the upper hot pressing plate; The test standard block is placed on the lower hot pressing plate, and the upper hot pressing plate can move along the first direction to drive the first probe assembly to be electrically connected to the first tab and drive the second probe assembly to be electrically connected to the second tab; The first direction intersects the second direction and the third direction in pairs.

8. The resistance testing system according to claim 7, characterized in that: The first probe assembly and the second probe assembly both include a telescopic cylinder and a test probe. The telescopic cylinder is fixedly connected to the upper hot pressing plate and is transmission-connected to the test probe. The telescopic cylinder can drive the test probe to move along the first direction.

9. The resistance testing system according to claim 8, characterized in that: The hot pressing mechanism also includes an assembly plate and a pressure cylinder fixedly connected to the assembly plate, the pressure cylinder is transmission-connected to the upper hot pressing plate, and the pressure cylinder can drive the upper hot pressing plate to reciprocate along the first direction.

10. The resistance testing system according to claim 9, characterized in that: The hot pressing mechanism also includes a guide rod, and there are multiple guide rods, each of which is fixedly connected to the upper hot pressing plate; the assembly plate is also provided with a guide hole, and each of the guide rods passes through the guide hole along the first direction.

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