CN215338750U - Air tightness detection device - Google Patents

Abstract

The utility model discloses air tightness detection equipment which comprises a machine table, a detection mechanism and a buffer mechanism, wherein the machine table is provided with a conveying rail, the conveying rail is connected with a plurality of material taking mechanisms in a sliding manner, the machine table is sequentially provided with an initial detection station, a first buffer station and a rechecking station along a first direction, and the first direction is the same as the conveying direction of the conveying rail; the detection mechanism is arranged at the initial detection station and the re-detection station and is used for detecting a product to be detected, the detection mechanism is provided with a first station and a second station, the first station and the second station are sequentially arranged along a second direction, and the second direction is vertical to the first direction; the caching mechanism is provided with a plurality of placing positions and used for placing products, the caching mechanism is arranged on the first caching station, and the caching mechanism is located on one side of the first station. The utility model has compact overall layout and small occupied area.

Description

Air tightness detection device

Technical Field

The utility model relates to the field of battery leakage detection equipment, in particular to air tightness detection equipment.

Background

After the battery cell is processed and assembled, the whole battery cell needs to be subjected to air tightness test, and in the test process, the test needs to be performed in multiple processes so as to improve the reliability of the test result. However, in the existing detection equipment, the station layout corresponding to each process is unreasonable and disordered, so that the equipment is large in size, large in occupied area and high in cost.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the air tightness detection equipment which is compact in overall layout and small in occupied area.

The airtightness detection apparatus according to the embodiment of the present invention includes: the machine table is provided with a conveying rail, the conveying rail is connected with a plurality of material taking mechanisms in a sliding mode, an initial detection station, a first cache station and a re-detection station are sequentially arranged on the machine table along a first direction, and the first direction is the same as the conveying direction of the conveying rail; the detection mechanism is arranged at the initial detection station and the re-detection station and is used for detecting a product to be detected, the detection mechanism is provided with a first station and a second station, the first station and the second station are sequentially arranged along a second direction, and the second direction is vertical to the first direction; the caching mechanism is provided with a plurality of placing positions and used for placing products, the caching mechanism is arranged on the first caching station, and the caching mechanism is located on one side of the first station.

The air tightness detection device provided by the embodiment of the utility model at least has the following beneficial effects: by sequentially arranging the primary inspection station, the first buffer station and the reinspection station in the first direction, the material taking mechanism can transfer the product to be detected on the primary inspection station to the first buffer station for temporary storage and then to the reinspection station for detection, wherein, in the detection mechanisms on the initial detection station and the re-detection station, the first station and the second station are arranged in sequence along the second direction, the feeding from the first station can be carried out firstly, then the feeding is carried out to the second station for detection, and the feeding back to the first station is carried out again after the detection is finished, because the second direction is vertical to the first direction, the conveying of the product to be detected between the first station and the second station and the conveying of the product to be detected between the primary detection station, the first buffer station and the re-detection station are not interfered with each other, the whole layout is reasonable and compact, therefore, the whole device is small in size and small in occupied area, and the production cost for storing the device is effectively reduced.

According to some embodiments of the utility model, the cache mechanism comprises a bearing plate, the bearing plate is provided with a plurality of limiting plates, the limiting plates are arranged at intervals along the first direction, every two limiting plates are matched to define the placing position, and a product to be tested is clamped through the two limiting plates so as to be placed conveniently.

According to some embodiments of the utility model, the limiting plate is provided with a plurality of limiting blocks at intervals, and the limiting blocks extend along a direction departing from the bearing plate, so that two ends of a product to be tested are further stabilized, and the product is prevented from tilting.

According to some embodiments of the utility model, the opposite side surfaces of the limiting blocks at two sides of the placing position are provided with the guide surfaces, the guide surfaces are positioned at one ends of the limiting blocks, which are far away from the bearing plate, and when a product to be tested is placed in the placing position, the product to be tested can be guided by the guide surfaces, so that the product to be tested can smoothly slide into the placing position.

According to some embodiments of the utility model, the buffer mechanism is further provided with a slide rail, the slide rail is fixedly installed on the machine table, the length direction of the slide rail is arranged along the second direction, the bearing plate is connected to the slide rail in a sliding manner, and the bearing plate is further provided with a handle, so that the bearing plate can be pulled out manually.

According to some embodiments of the utility model, the material taking mechanism comprises an installation seat and a plurality of clamping blocks, the installation seat is slidably connected to the conveying rail, the clamping blocks are sequentially arranged at the lower end of the installation seat along the first direction, a first driving piece is connected between every two clamping blocks to form a clamping jaw, a plurality of products to be tested can be simultaneously grabbed, and the testing efficiency is improved.

According to some embodiments of the utility model, the mounting base is provided with at least two clamping jaws along the second direction, and the at least two clamping jaws are arranged at intervals, so that stability of grabbing the product is improved.

According to some embodiments of the utility model, at least one of the two clamping blocks of the clamping jaw is provided with an adsorption part, the adsorption part is located on the opposite side surfaces of the two clamping blocks, and when a product to be detected is grabbed, the adsorption part can adsorb the product to be detected, so that the product to be detected is prevented from falling off in the transferring process.

According to some embodiments of the utility model, the airtightness detection equipment is further provided with a pressure-resistant testing mechanism, the pressure-resistant testing mechanism is positioned on one side of the rechecking station, which is far away from the first cache station, the pressure-resistant testing mechanism is provided with a plurality of detection positions, two ends of each detection position are respectively provided with a detection part, and the two detection parts are matched to test the pressure resistance of a product to be tested.

According to some embodiments of the utility model, the air tightness detection device is further provided with a second cache station, the second cache station is provided with the cache mechanism, the cache mechanism and the pressure resistance test mechanism of the second cache station are arranged side by side along the first direction, and the second cache station is used for placing products which are not qualified in the re-inspection.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model, according to some embodiments of the utility model.

Drawings

The utility model is further described with reference to the following figures and examples, in which:

fig. 1 is a schematic structural view of a airtightness detection apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a cache mechanism according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a material taking mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a withstand voltage testing mechanism according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a detecting mechanism according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a detection chamber according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of a detection chamber of an embodiment of the present invention;

FIG. 8 is an enlarged view of portion A of FIG. 7;

FIG. 9 is a schematic view of a clamp according to an embodiment of the present invention;

fig. 10 is a flowchart of a method for detecting airtightness according to an embodiment of the present invention.

A machine 100; a conveying rail 110; a feeding and taking mechanism 120; a mount 121; a clamp block 122; a first driving member 123; an adsorption member 124; a second sensor 125; a transfer material taking mechanism 130; a blanking and material taking mechanism 140;

a withstand voltage test mechanism 200; a detection bit 210; a detection component 220; a driver 230;

a detection mechanism 300; a detection chamber 310; an accommodating space 311; a guide rail 320; a clamp 330; a mounting groove 331; an abutment 332; a fixed block 333; an elastic block 3331; a connecting portion 3332; a positioning block 334; a first spacer 3341; a second head block 335; a connecting block 3351; a drive member 340; the second driving member 341; a push plate 342; an air pipe 350; the first seal ring 351; a sleeve 360; a frame 361; a slider 362; a second seal 363;

a caching mechanism 400; a slide rail 410; a carrier plate 420; a position restricting plate 430; a set bit 431; a stop block 432; a guide surface 433; a handle 440; a first sensor 450.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1, the apparatus for detecting air tightness according to an embodiment of the present invention includes a machine table 100, a detection mechanism 300, and a buffer mechanism 400, where the machine table 100 is provided with a conveying rail 110, the conveying rail 110 is located above the machine table 100, the conveying rail 110 is slidably connected to a plurality of material taking mechanisms, the machine table 100 is further provided with a primary inspection station, a first buffer station, and a review station, the primary inspection station, the first buffer station, and the review station are sequentially arranged along a first direction, the first direction is a conveying direction of the conveying rail 110, generally speaking, to improve testing efficiency, the material taking mechanisms include a feeding material taking mechanism 120, a transfer material taking mechanism 130, and a discharging material taking mechanism 140, which are sequentially arranged along the first direction, and have the same structural form, the feeding material taking mechanism 120 is configured to transfer a battery cell to be tested to the primary inspection station, to realize feeding, the transfer material taking mechanism 130 is configured to transfer the battery cell to be tested from the primary inspection station to the first buffer station and transfer the first buffer station to the review station, the blanking and material taking mechanism 140 is used for transferring the tested battery cell from the primary inspection station or the secondary inspection station to the next procedure to realize blanking; the detection mechanism 300 is arranged at the initial detection station and the re-detection station and is used for detecting the electric core to be detected, the detection mechanism 300 is provided with a first station and a second station, the first station and the second station are sequentially arranged along a second direction, the second direction is vertical to the first direction, in the detection mechanism 300, the first station is used for feeding or discharging, and the second station is used for testing; caching mechanism 400 sets up in first cache station, caching mechanism 400 is provided with a plurality of places 431 of being used for placing the electric core that awaits measuring or the unqualified electric core of primary inspection, in the reinspection, need test again single electric core that awaits measuring, consequently, its totality is consuming time longer, consequently, if there is a large amount of defective products, need store it temporarily in placing 431, wait to get the material, caching mechanism 400 is located one side of first station, be convenient for transfer the electric core on the first station to placing 431.

By sequentially arranging the initial inspection station, the first buffer station and the rechecking station in the first direction, the material taking mechanism can transfer the cell to be detected on the initial inspection station to the first buffer station for temporary storage and then to the rechecking station for detection, wherein, in the detection mechanism 300 on the initial detection station and the re-detection station, the first station and the second station are arranged in sequence along the second direction, the feeding from the first station can be carried out firstly, then the detection is carried out by transferring to the second station, and the detection is carried out by transferring back to the first station again after the detection is finished, because the second direction is vertical to the first direction, the transmission of the cell to be tested between the first station and the second station and the transmission of the product to be tested between the primary inspection station, the first buffer station and the re-inspection station are not interfered with each other, the whole layout is reasonable and compact, therefore, the whole device is small in size and small in occupied area, and the production cost for storing the device is effectively reduced.

Referring to fig. 2, it can be understood that the caching mechanism 400 includes a carrier plate 420, the carrier plate 420 is provided with a plurality of limiting plates 430, the plurality of limiting plates 430 are arranged at intervals along a first direction, and every two limiting plates 430 cooperate to define a placement position 431. Wherein, the limiting plate 430 can be directly embedded into the loading plate 420, and every two limiting plates 430 are arranged side by side and form a placing position 431 between the two limiting plates 430, so that the battery cell to be tested is placed between the two limiting plates 430, and the battery cell to be tested is clamped by the two limiting plates 430, so that the battery cell to be tested is placed.

Referring to fig. 2, it can be understood that limiting plate 430 is provided with a plurality of stoppers 432 at intervals, stopper 432 extends along the direction that deviates from loading board 420, specifically, both ends that are located limiting plate 430 all are provided with stopper 432, stopper 432 upwards extends, because the height when the electric core that awaits measuring transversely places is still higher, stopper 432 can further stabilize the both ends of the electric core that awaits measuring, prevent that electric core from taking place to incline and influencing the gas tightness test, and only set up stopper 432 at the both ends of limiting plate 430, can save material.

Referring to fig. 2, it can be understood that guide surfaces 433 are arranged on opposite side surfaces of the limiting blocks 432 on two sides of the placement position 431, the guide surfaces 433 are located at one ends of the limiting blocks 432 departing from the bearing plate 420, and the guide surfaces 433 incline from top to bottom, so that when a to-be-tested battery cell is placed in the to-be-tested battery cell, the to-be-tested battery cell can be guided by the guide surfaces 433 and can smoothly slide into the placement position 431.

Referring to fig. 2, it can be understood that the buffer memory mechanism 400 is further provided with a slide rail 410, the slide rail 410 is fixedly installed on the machine platform 100, the length direction of the slide rail 410 is arranged along the second direction, the loading plate 420 is slidably connected to the slide rail 410, the loading plate 420 is further provided with a handle 440, during the retest, a single electric core to be tested needs to be retested, therefore, the total time consumption is long, if a large number of unqualified products exist, a part of the electric core to be tested needs to be taken out first, or a part of the electric core to be tested is directly displayed as unqualified code scanning, and may be directly taken out, the slide rail 410 and the handle 440 are provided, so that the loading plate 420 is conveniently pulled out manually, so as to temporarily take out a part of the electric core to be tested, and avoid overloading of the buffer memory mechanism 400.

Referring to fig. 2, it can be understood that the buffer mechanism 400 is further provided with a plurality of first sensors 450, the first sensors 450 correspond to the placing locations 431 one by one, and the first sensors 450 can detect whether the cells to be tested are placed in the placing locations 431, so as to transmit a signal to a control center (not shown in the figure) to control the operation of the material taking mechanism, or can transmit a signal to an alarm device (not shown in the figure) when the buffer mechanism is fully loaded, so as to inform a worker to take out the cells to be tested in time.

Referring to fig. 3, it can be understood that the material taking mechanism includes a mounting seat 121 and a plurality of clamping blocks 122, the mounting seat 121 is slidably connected to the conveying rail 110, the clamping blocks 122 are sequentially installed at the lower end of the mounting seat 121 along a first direction, a first driving member 123 is connected between every two clamping blocks 122 and forms a clamping jaw, so that the first driving member 123 can drive the two clamping blocks 122 to clamp the battery cell to be tested, so as to transfer the battery cell to be tested, and the material taking mechanism can simultaneously grab a plurality of battery cells to be tested, thereby improving the testing efficiency. Of course, the material taking mechanism can also be a mechanical arm with other structural forms.

Referring to fig. 3, it can be understood that the mounting seat 121 is provided with at least two clamping jaws along the second direction, and the at least two clamping jaws are arranged at intervals, so that the two ends of the battery cell can be clamped simultaneously, and the stability of the battery cell grabbing and transferring process is improved.

Referring to fig. 3, it can be understood that at least one clamping block 122 of the two clamping blocks 122 of the clamping jaw is provided with an adsorption component 124, the adsorption component 124 is located on the opposite side surfaces of the two clamping blocks 122, specifically, the adsorption component 124 is arranged on the opposite side surfaces of the two clamping blocks 122, and the adsorption component 124 is configured as a suction cup.

Referring to fig. 3, it can be understood that a second sensor 125 is disposed between the two clamping blocks 122 of the clamping jaw, and the second sensor 125 is configured to detect a position of a product to be tested, that is, when a battery cell to be tested is grasped, the second sensor 125 can detect whether the battery cell to be tested has partially entered into a space between the two clamping blocks 122, that is, whether the battery cell to be tested has been in place, so as to grasp and transfer the battery cell to be tested.

Referring to fig. 1 and 4, it can be understood that the airtightness detection apparatus is further provided with a pressure-resistant testing mechanism 200, the pressure-resistant testing mechanism 200 is located on one side of the rechecking station away from the first buffer station, that is, the pressure-resistant testing mechanism 200 is located at the rear end of the rechecking station along the conveying direction of the conveying rail 110, the pressure-resistant testing mechanism 200 has a plurality of detection positions 210, wherein the detection positions 210 are identical to the placement positions 431 in the buffer mechanism 400, and are not described herein again, two ends of the detection positions 210 are respectively provided with a detection component 220, such as a probe, and the probe is connected with a driver 230, the two detection components 220 cooperate to test the pressure resistance of the product to be tested, when the electrical core to be tested is qualified in the primary detection station or the rechecking station, the taking mechanism transfers the electrical core having completed the airtightness test to the detection positions 210, and the driver 230 drives the probes at the two ends to contact the electrical core, thereby performing the pressure-resistant test on the electrical core, the electric core subjected to the air tightness test meets the requirement of pressure resistance.

Referring to fig. 1 and 4, it can be understood that the air tightness detection device is further provided with a second cache station, the second cache station is also provided with a cache mechanism 400, the cache mechanism 400 of the second cache station and the voltage withstanding test mechanism 200 are arranged side by side along the first direction, and the second cache station is used for placing the electric core which is unqualified in the rechecking process, so that the electric core can be transferred to the voltage withstanding test mechanism 200 if the rechecking process is qualified, and the electric core can be transferred to the cache mechanism 400 of the second cache station if the rechecking process is unqualified.

Referring to fig. 5 to 10, the detection mechanism 300 includes a detection chamber 310, a guide rail 320, a clamp 330, a driving part 340, an air tube 350, and a sleeve 360, wherein an accommodating space 311 is provided inside the detection chamber 310, and a lower portion of the detection chamber 310 is open; the first station and the second station are arranged at two ends of the guide rail 320, the first station is positioned below the conveying rail 110, and the second station is positioned at the lower part of the detection cavity 310; the clamp 330 is detachably connected with the guide rail 320, the clamp 330 can reciprocate between a first station and a second station along the guide rail 320, and the clamp 330 can be embedded into the detection cavity 310 to seal the accommodating space 311; the driving part 340 is arranged at the second station and is used for driving the clamp 330 to lift; the gas pipe 350 is arranged at one end of the detection cavity 310 in a penetrating way, and the gas pipe 350 is connected with a vacuum pump and a helium filling device (not shown in the figure); the air tube 350 is sleeved with the sleeve tube 360, and one end of the sleeve tube 360 is embedded in the end of the detection cavity 310.

In performing the hermeticity test, the method comprises the following steps:

s1: placing a plurality of battery cells to be tested on the clamp 330 of the primary inspection station, and conveying the battery cells to be tested into the accommodating space 311 through the driving part 340;

s2: the air pipe 350 is abutted against the electric core to be detected, and the sleeve 360 is abutted against the outer wall of the detection cavity 310;

s3: respectively vacuumizing the detection cavity 310 and the battery cell to be detected;

s4: filling helium into the battery cell to be tested;

s5: detecting a helium leakage rate value in the detection cavity 310, and if the helium leakage rate value is greater than a set value, determining that the battery cell to be detected is unqualified;

s6: and taking the cell to be tested out of the detection cavity 310.

In step S2, the air tube 350 abuts against the electric core to be detected, so that the electric core to be detected can be vacuumized through the air tube 350, helium is injected into the electric core to be detected, when the air tube 350 is connected with the electric core to be detected, the sleeve 360 abuts against the detection cavity 310, the gap between the air tube 350 and the detection cavity 310 is sealed, the sealing degree of the detection cavity 310 is improved, and the detection accuracy is improved.

In the specific use, the battery cell to be tested is clamped by the material taking mechanism connected to the conveying rail 110, the battery cell to be tested is placed in the clamp 330 for assembly, after assembly, the clamp 330 is conveyed to the second station from the first station, the clamp 330 is pushed into the detection cavity 310 from the lower part of the detection cavity 310 by the driving part 340, the detection cavity 310 is matched with the clamp 330, the accommodating space 311 is closed, the battery cell is located in the accommodating space 311 for detection, after detection is completed, the battery cell is taken out by the material taking mechanism, unqualified products are placed in the cache mechanism 400 for rechecking, and qualified products are taken out and are discharged.

Wherein, a group of unqualified electric cores to be tested is taken out one by one from the caching mechanism 400 and is respectively and independently placed on the clamp 330 on the rechecking station to respectively detect each electric core to be tested, so as to detect all unqualified products in the electric cores to be tested which are initially checked in the same group.

It can be understood that, in step S6, the battery cell to be tested is first vacuumized, then dry air or nitrogen is injected into the accommodating space 311, the air pipe 350 is separated from the battery cell to be tested, and finally the battery cell to be tested is taken out.

Firstly, extracting helium in the battery core to be tested to enable the interior of the battery core to be tested to be in a vacuum state, and simultaneously injecting nitrogen or dry air into the cavity to enable the vacuum degree in the battery core to be tested to be smaller than the vacuum degree of the cavity, so that the amount of helium leaked into the cavity from the interior of the battery core to be tested is reduced in step S6, and the helium leakage value in the cavity is prevented from being influenced.

It will be appreciated that a first seal 351 is provided at the end of the air tube 350 and a second seal 363 is provided between the sleeve 360 and the end of the detection chamber 310. The first sealing ring 351 is used for sealing the joint between the air pipe 350 and the electric core to be detected, and the second sealing ring 363 is used for sealing the joint between the sleeve pipe 360 and the detection cavity 310 and plugging a gap between the air pipe 350 and the detection cavity 310.

In some embodiments, the device further comprises a frame 361, wherein the frame 361 is slidably connected with a sliding block 362, and the sleeve 360 is fixed on the sliding block 362. The sleeve 360 and the air tube 350 move relatively independently, which can improve the coordination of the whole detection mechanism 300 in use.

It is understood that the air tube 350 is disposed through one end of the detection chamber 310, and the air tube 350 is connected to a vacuum pump (not shown). After putting into accommodation space 311 with electric core, trachea 350 offsets with electric core, carries out the evacuation through the evacuation pump to electric core inside, in addition, need mention, detects chamber 310 and also is connected with the equipment that is used for the evacuation to detect in making electric core be in the environment of certain vacuum degree.

In some embodiments, the driving part 340 includes a second driving member 341 and a push plate 342, and the second driving member 341 is fixed to both sides of the guide rail 320; the push plate 342 is fixed at the output end of the second driving member 341; wherein, the two sides of the clamp 330 are provided with abutting parts 332 which can abut against the push plate 342. After the clamp 330 is conveyed to the second station, the second driving member 341 drives the push plate 342 to ascend and abut against the abutting portion 332, so as to drive the clamp 330 to be embedded into the detection cavity 310, and thus the battery cell is placed in the accommodating space 311. It should be mentioned that the second driving member 341 may be a power transmission element such as a cylinder or a cylinder.

The cells are mass-produced during the manufacturing process, and testing one cell at a time greatly affects the overall production efficiency, so in some embodiments, the fixture 330 is provided with at least one mounting groove 331 for embedding the cell. And a plurality of battery cores are tested at one time, so that the working efficiency is further improved.

In some embodiments, the clamp 330 includes a mounting plate, a fixing block 333, and an elastic block 3331, the mounting plate is slidably connected to the guide rail 320, and a slot is disposed in the mounting plate; a plurality of fixing blocks 333 are arranged, the fixing blocks 333 are embedded in the groove positions, two adjacent fixing blocks 333 are matched to form a mounting groove 331, and an assembly groove is formed in the side wall, close to the mounting groove 331, of each fixing block 333; and the elastic block 3331 is embedded in the assembling groove. The battery cell is placed in the mounting groove 331, and the battery cell is clamped by the elastic block 3331 by using elasticity thereof, so that assembly is completed. The mounting plate is slidably connected to the guide rail 320, so that the clamp 330 can move back and forth between the first station and the second station, and the thickness of the elastic block 3331 can be selected according to requirements to match with cells with different thickness dimensions.

In some embodiments, the clamp 330 further includes a positioning block 334, the positioning block 334 is fixed at any end of the slot, and the positioning block 334 is clamped with the fixing block 333 to restrain the position of the fixing block 333. The positioning block 334 is fixed in the slot, and then the fixing block 333 is placed in the slot, so that the fixing block 333 and the positioning block 334 are clamped and positioned, and the positioning block 334 is installed in the slot.

In some embodiments, the mounting groove 331 has a first block 3341 at one end and a second block 335 at the other end, and the first block 3341 is disposed between the fixing block 333 and the positioning block 334. First cushion 3341 and second cushion 335 cooperate with the both ends butt of electric core respectively, and the fixed electric core of cooperation elastic component avoids electric core skew.

In some embodiments, for every two adjacent fixing blocks 333, at least one fixing block 333 is provided with a connecting portion 3332, and a length-adjustable connecting block 3351 is connected between the connecting portion 3332 and the second cushion block 335. The distance between the first cushion block 3341 and the second cushion block 335 is adjusted by adjusting the length of the connecting block 3351, so as to adapt to battery cells with different sizes, and improve the adaptability of the whole set of clamp 330. It should be noted that the length of the connecting block 3351 is adjustable, in some embodiments, the connecting block 3351 has a telescopic mechanism, and in other embodiments, the connecting block 3351 may be designed in a plurality of different sizes, and the connecting block 3351 with different sizes may be selected according to requirements.

In some embodiments, the two ends of the connecting block 3351 are respectively connected with the connecting portion 3332 and the second block 335 in a clamping manner. The connecting block 3351 is connected between the second cushion block 335 and the connecting part 3332 in a clamping manner, so that the replacement is convenient.

In some embodiments, the side of the elastic block 3331 facing the mounting groove 331 is provided with a slope, and the slope is inclined from top to bottom. When the battery cell is mounted, the battery cell contacts the inclined plane and is guided by the inclined plane, so that the battery cell is assembled in the mounting groove 331.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. An airtightness detection apparatus, comprising:

the machine table is provided with a conveying rail, the conveying rail is connected with a plurality of material taking mechanisms in a sliding mode, an initial detection station, a first cache station and a re-detection station are sequentially arranged on the machine table along a first direction, and the first direction is the same as the conveying direction of the conveying rail;

the detection mechanism is arranged at the initial detection station and the re-detection station and is used for detecting a product to be detected, the detection mechanism is provided with a first station and a second station, the first station and the second station are sequentially arranged along a second direction, and the second direction is vertical to the first direction;

the caching mechanism is provided with a plurality of placing positions and used for placing products, the caching mechanism is arranged on the first caching station, and the caching mechanism is located on one side of the first station.

2. The airtightness detection apparatus according to claim 1, wherein the buffer mechanism includes a bearing plate, the bearing plate is provided with a plurality of limiting plates, the plurality of limiting plates are arranged at intervals in the first direction, and every two limiting plates cooperate to define the placement position.

3. The airtightness detection apparatus according to claim 2, wherein the limiting plate is provided with a plurality of limiting blocks at intervals, and the limiting blocks extend in a direction away from the bearing plate.

4. The airtightness detection apparatus according to claim 3, wherein guide surfaces are provided on opposite sides of the limiting blocks on both sides of the placement position, and the guide surfaces are located at one ends of the limiting blocks, which are away from the bearing plate.

5. The airtightness detection apparatus according to claim 2, wherein the buffer mechanism is further provided with a slide rail, the slide rail is fixedly mounted on the machine platform, the length direction of the slide rail is arranged along the second direction, the bearing plate is slidably connected to the slide rail, and the bearing plate is further provided with a handle.

6. The airtightness detection apparatus according to claim 1, wherein the material taking mechanism includes a mounting seat and a plurality of clamping blocks, the mounting seat is slidably connected to the conveying rail, the plurality of clamping blocks are sequentially mounted on a lower end of the mounting seat along the first direction, and a first driving member is connected between every two clamping blocks and forms a clamping jaw.

7. The apparatus according to claim 6, wherein said mounting base is provided with at least two said clamping jaws along said second direction, said at least two clamping jaws being spaced apart.

8. The apparatus for detecting the airtightness of claim 6, wherein at least one of the two blocks of the clamping jaw is provided with an adsorption member on the opposite side of the two blocks.

9. The airtightness detection apparatus according to claim 1, further comprising a pressure-resistant testing mechanism, wherein the pressure-resistant testing mechanism is located on a side of the rechecking station away from the first buffer station, the pressure-resistant testing mechanism has a plurality of detection positions, two ends of each detection position are respectively provided with a detection component, and the two detection components are matched to test the pressure resistance of the product to be tested.

10. The airtightness detection apparatus according to claim 9, wherein a second buffer storage station is further provided, the second buffer storage station is provided with the buffer storage mechanism, and the buffer storage mechanism and the pressure resistance test mechanism of the second buffer storage station are arranged side by side in the first direction.

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