CN214843850U

CN214843850U - Lithium battery air tightness testing device

Info

Publication number: CN214843850U
Application number: CN202121079199.3U
Authority: CN
Inventors: 王伟; 王栋梁
Original assignee: Sichuan Lvtaiwei Technology Co ltd
Current assignee: Sichuan Lvtaiwei Technology Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-11-23
Anticipated expiration: 2031-05-19

Abstract

The utility model discloses a lithium cell gas tightness testing arrangement belongs to lithium cell check out test set technical field. The supporting device comprises a base, wherein a supporting component is arranged on the base, the supporting component is composed of at least two supporting blocks with arc-shaped supporting surfaces, the supporting surfaces of the two supporting blocks are oppositely arranged, the two supporting blocks are in sliding connection relative to the base, and the two supporting blocks are close to or far away from each other relative to the base; the base is further provided with a sealing detection plate and a fixing assembly, the sealing detection plate is fixedly connected to the base, the fixing assembly is connected to the base in a sliding mode, the supporting assembly is located between the sealing detection plate and the fixing assembly, and the sliding direction of the fixing assembly is perpendicular to that of the supporting block. The utility model has the advantages of simple structure, convenient operation, the battery of the different specifications size of can adaptation.

Description

Lithium battery air tightness testing device

Technical Field

The utility model relates to a become a lithium cell gas tightness testing arrangement belongs to lithium cell check out test set technical field.

Background

The lithium battery has high energy density, can be recycled for many times, has long service life and small pollution, and is widely used in the fields of mobile phones, notebooks and the like. The chemical property of lithium metal in the battery is very active, and in order to prevent the lithium metal from reacting with air in a contact manner, the air tightness of the lithium battery has higher requirements, so that the air tightness of the lithium battery is detected in the production process of the lithium battery, the safety performance of the lithium battery is ensured, and the occurrence of the condition that the lithium battery fails or even bursts due to the reaction of electrolyte is avoided.

At present, methods for detecting the air tightness of lithium batteries include: the air pipe is connected to the test hole of the lithium battery, the air is introduced into the test hole, the lithium battery is placed into the sleeve and then soaked in water, and whether air leakage occurs or not is observed. However, in the detection process, the battery is troublesome to mount and dismount, and is required to be immersed in water after being mounted, so that the operation is inconvenient. Among the prior art, publication number is CN 211553216U's patent discloses a simple and easy cylinder lithium cell gas tightness test fixture, include to set up supporting seat and scalable clamping device on the base for it is fixed to install the battery, and set up the detection module who aerifys the pressure measurement on the base, aerify the pressure measurement through aerifing the battery inspection hole, obtains the gas tightness testing result of battery. However, in practical application, the scheme can only detect the batteries with fixed specifications, and when the specification and the size of the batteries are changed, the supporting seat and the telescopic clamping device of the test tool are difficult to adapt to the supporting seat and the telescopic clamping device. Meanwhile, the telescopic clamping device needs manual control of an operator and continuously applies force to keep a clamping state of the battery, the magnitude of the applied force needs the operator to control, when the applied force is too large or too small, a driving handle in the telescopic clamping device deflects upwards or downwards, the clamping force of the battery is weakened, and the accuracy of a test result is not facilitated.

Disclosure of Invention

An object of the utility model is to overcome prior art not enough, provide a lithium cell gas tightness testing arrangement.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a lithium cell gas tightness testing arrangement, includes the base, be provided with supporting component on the base, supporting component comprises for curved supporting shoe by at least two holding surfaces, two the holding surface of supporting shoe sets up relatively, and two the equal relative base sliding connection of supporting shoe, two the relative base of supporting shoe is close to each other or keeps away from. The base is further provided with a sealing detection plate and a fixing assembly, the sealing detection plate is fixedly connected to the base, the fixing assembly is connected to the base in a sliding mode, the supporting assembly is located between the sealing detection plate and the fixing assembly, and the sliding direction of the fixing assembly is perpendicular to that of the supporting block.

Furthermore, the supporting component comprises an active group and a passive group, a connecting piece is arranged between the active group and the passive group, and the active group and the passive group are respectively composed of two supporting blocks.

Furthermore, a first groove is formed in the position, corresponding to the active set, of the base, the first groove extends along the sliding direction of the supporting blocks, a bidirectional screw rod is connected in the first groove in a rotating mode, the two supporting blocks of the active set are fixedly connected with connecting blocks with threaded holes, and the thread directions of the threaded holes in the two connecting blocks are opposite.

Furthermore, the first groove side wall is provided with a hole matched with the bidirectional screw rod, the bidirectional screw rod extends out of the base from the hole, and one end of the bidirectional screw rod, which extends out of the base, is fixedly connected with a rotating handle.

Furthermore, a second groove parallel to the first groove is formed in the position, corresponding to the passive group, of the base, a guide rod is fixedly connected in the second groove, and a connecting block with a through hole is fixedly connected to the supporting block of the passive group.

Further, the fixing assembly comprises a fixing seat and an abutting part, and an elastic part is connected between the fixing seat and the abutting part.

Furthermore, the elastic piece is a spring, the fixing seat is fixedly connected with a connecting rod, the spring is sleeved on the connecting rod, and a through hole matched with the connecting rod is formed in the center of the abutting piece.

Furthermore, the fixing seat and the abutting part are respectively provided with a mounting hole matched with the spring.

Furthermore, a longitudinal groove communicated with the first groove is formed in the position, corresponding to the fixing component, of the base, a longitudinal screw rod is connected in the longitudinal groove in a rotating mode, and a connecting block with a threaded hole is fixedly connected to the fixing component; one end of the longitudinal screw rod, which is close to the first groove, is fixedly connected with a first bevel gear, and a second bevel gear matched with the first bevel gear is fixedly connected to the bidirectional screw rod.

Furthermore, an air inlet pipe is fixedly connected to the sealing detection plate, and a pressure measurement piece is arranged in the air inlet pipe.

The utility model has the advantages that:

1) through all setting up supporting component and fixed subassembly into relative base sliding connection, make supporting component and fixed subassembly can make the adjustment according to the specification size of waiting to detect the battery to the battery of the different specification sizes of adaptation improves the utility model discloses testing arrangement is to the universality of various specification batteries.

2) The utility model discloses a supporting component realizes the sliding control to supporting component through setting up the two-way screw rod in the base recess and the connecting block of corresponding threaded hole, when the battery that awaits measuring is great, rotates two-way screw rod, makes two supporting shoe reverse movements of initiative group, keeps away from each other to adapt to the battery of great volume, when the battery that awaits measuring is less, the reverse rotation two-way screw rod makes two supporting shoe of initiative group move in opposite directions, is close to each other, in order to adapt to the battery of less volume.

3) Meanwhile, the position adjustment of the fixing component is also controlled by the bidirectional screw rod, and the bevel gears which are meshed with each other are arranged between the bidirectional screw rod and the longitudinal screw rod, so that the longitudinal screw rod is driven to correspondingly rotate when the bidirectional screw rod is controlled to rotate, and the fixing seat correspondingly moves forwards or backwards. The utility model is simple in operation convenient, but quick adjustment testing arrangement is with the not battery of equidimension of adaptation, and structural stability is good. Fixed subassembly passes through fixing base, spring and butt piece and realizes fixing, and is simple quick, but quick replacement between spring and butt piece, the fixing base avoids the ageing normal use who influences the device of spring.

Drawings

Fig. 1 is a top view of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a schematic structural view of the fixing assembly of the present invention.

Fig. 4 is a schematic view of a part of the structure of the support assembly of the present invention.

In the figure, 1, a base; 11. a first groove; 12. a bidirectional screw; 13. rotating the handle; 14. a second groove; 15. a guide bar; 16. a longitudinal slot; 17. a longitudinal screw; 18. a first bevel gear; 19. a second bevel gear; 2. a support assembly; 21. an active group; 22. a passive group; 23. a connecting member; 24. a support block; 25. connecting blocks; 3. sealing the detection plate; 31. an air inlet pipe; 32. measuring and pressing parts; 4. a fixing assembly; 41. a fixed seat; 42. an abutting member; 43. a spring; 44. a connecting rod; 45. a through hole; 46. and (7) installing holes.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 and 4, the utility model provides a technical solution: the utility model provides a lithium cell gas tightness testing arrangement, includes base 1, is provided with the supporting component 2 that is used for treating the battery that detects to support on base 1. The supporting component 2 of the embodiment includes an active set 21 and a passive set 22, the active set 21 and the passive set 22 are respectively composed of two supporting blocks 24, the supporting surfaces of the supporting blocks 24 are arc-shaped, the supporting surfaces of the two supporting blocks 24 of each set are oppositely arranged, namely, the two supporting blocks 24 of the active set 21 or the passive set 22 are protruded towards the left lower side, the other supporting surface is protruded towards the right lower side, and a battery to be detected is placed on the supporting surface of the supporting block 24. In order to accommodate batteries of different sizes, each support block 24 is slidably connected with respect to the base 1, i.e. the support blocks 24 are slidable with respect to the base 1, and the two support blocks 24 of each set can be moved toward or away from each other. A connecting piece 23 is arranged between the active group 21 and the passive group 22, and a supporting block 24 of the active group 21 and a supporting block 24 of the passive group 22 are fixedly connected through the connecting piece 23, so that when the supporting block 24 of the active group 21 is adjusted and moved, the supporting block 24 of the passive group 22 is correspondingly moved.

As shown in fig. 1 and 4, in order to adjust the support assembly 2, a first groove 11 is provided on the base 1 at a position corresponding to the active set 21, where the first groove 11 is located below the support block 24 of the active set 21, and the first groove 11 extends along the sliding direction of the support block 24, that is, along the left-right direction of the base 1. The two-way screw 12 is rotatably connected in the first groove 11, the two support blocks 24 of the active set 21 are both fixedly connected with a connection block 25 with a threaded hole, the connection block 25 is positioned below the support blocks 24, and the threaded hole of the connection block is matched with the threads on the two-way screw 12, that is, the two-way screw 12 can rotate in the threaded hole, so that the corresponding support block 24 moves along the two-way screw 12. And the thread directions of the screw holes on the two connecting blocks 25 in the driving group 21 are opposite, so that when the bidirectional screw 12 rotates, the two connecting blocks 25 move in opposite directions to drive the supporting blocks 24 thereon to move in opposite directions to approach or separate from each other.

As shown in fig. 1, in order to conveniently control the rotation of the bidirectional screw 12, an opening matched with the bidirectional screw 12 is formed on the side wall of the first groove 11, the left end of the bidirectional screw 12 extends out of the base 1 from the opening, and a rotating handle 13 is fixedly connected to one end of the bidirectional screw 12 extending out of the base 1. When a battery to be detected is mounted, the bidirectional screw 12 can be rotated by controlling the rotating handle 13 to adjust the distance between each set of two supporting blocks 24. In order to improve the stability of the supporting component 2, a second groove 14 parallel to the first groove 11 is arranged on the base 1 at a position corresponding to the passive group 22, that is, the second groove 14 is located below the supporting block 24 of the passive group 22, a guide rod 15 is fixedly connected in the second groove 14, and a connecting block 25 with a through hole 45 is fixedly connected below the two supporting blocks 24 of the passive group 22. When the two support blocks 24 of the active set 21 are moved by the bidirectional screw 12, the two support blocks 24 of the passive set 22 are moved along the guide rod 15 by the connecting member 23.

As shown in fig. 1 and 2, a sealing detection plate 3 is further disposed on the base 1, the sealing detection plate 3 of the present embodiment is fixedly connected to an end portion of the base 1, an opening and a sealing member for accommodating an end portion of a battery are disposed on the sealing detection plate 3, an air inlet pipe 31 connected to an air pump is fixed on the sealing detection plate 3, a pressure measuring member 32 is disposed in the air inlet pipe 31, and the corresponding position of the battery is aligned with the end portion of the air inlet pipe 31, so as to perform an inflation test, observe and record the reading of the pressure measuring member 32 during the test, and determine the air tightness of the battery.

As shown in fig. 1 and 3, a fixing component 4 is further disposed on the base 1, the fixing component 4 is slidably connected to the base 1, the supporting component 2 is located between the sealing detection plate 3 and the fixing component 4, the battery to be tested is clamped and fixed by the fixing component 4 and the sealing detection plate 3, the supporting component 2 in the middle provides support for the battery main body, and the sliding direction of the fixing component 4 is perpendicular to the sliding direction of the supporting block 24, so as to realize installation and fixation of the battery in different directions. The fixing assembly 4 of the present embodiment includes a fixing seat 41 and an abutting member 42, an elastic member is connected between the fixing seat 41 and the abutting member 42, the elastic member of the present embodiment is a spring 43, and the battery is tightly fixed by the elastic force of the spring 43. In order to improve the stability of the fixing assembly 4, a connecting rod 44 is fixedly connected to the fixing seat 41, the spring 43 is sleeved on the connecting rod 44, the length of the spring 43 in a natural state is greater than that of the connecting rod 44, and a through hole 45 matched with the connecting rod 44 is formed in the center of the abutting piece 42. In order to facilitate the regular maintenance and replacement of the spring 43 in the fixing assembly 4, the fixing seat 41 and the abutting piece 42 are respectively provided with a mounting hole 46 matched with the spring 43, wherein the matching refers to the matching that the inner diameter of the mounting hole is consistent with the outer diameter of the spring 43, and the connection between the spring 43 and the fixing seat 41 and the abutting piece 42 is realized by inserting the end part of the spring 43 into the mounting hole 46, so that the fixing assembly is simple and convenient.

As shown in fig. 1 and 3, in order to adapt to batteries of different specifications and sizes, a longitudinal groove 16 communicated with the first groove 11 is formed in a position, corresponding to the fixing component 4, on the base 1, that is, the longitudinal groove 16 is located below the fixing component 4, the extending direction of the longitudinal groove 16 is perpendicular to the first groove 11, a longitudinal screw 17 is rotationally connected in the longitudinal groove 16, a connecting block 25 with a threaded hole is fixedly connected below the fixing seat 41, the connecting block 25 is arranged on the longitudinal screw 17 in a penetrating manner, and the position of the fixing seat 41 is moved by rotating the longitudinal screw 17. In order to conveniently control the longitudinal screw 17, a first bevel gear 18 is fixedly connected to one end of the longitudinal screw 17 close to the first groove 11, and a second bevel gear 19 matched with the first bevel gear 18 is fixedly connected to the bidirectional screw 12, wherein the matching means that the second bevel gear 19 is meshed with the first bevel gear 18, and when the second bevel gear 19 rotates along with the bidirectional screw 12, the first bevel gear 18 and the longitudinal screw 17 are driven to rotate along with the second bevel gear 19.

The utility model discloses when using, earlier according to the big small dimension adjustment supporting component 2 of battery and the position of fixed subassembly 4, control is rotated the handle and is made two-way screw 12 rotate, supporting shoe 24 and the vertical screw 17 of initiative group 21 rotate along with it, it takes place corresponding removal to drive supporting shoe 24 and the fixing base 41 of passive group 22, adjust the back that finishes, press butt piece 42 to the direction of fixing base 41, place the battery on supporting shoe 24, and aim at the mouth of pipe of intake pipe 31 with the relevant position of battery, then loosen butt piece 42, make butt piece 42 support the tip to the battery under spring 43's spring action, fix the battery, it can to test to ventilate to intake pipe 31 after fixed the completion.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The utility model provides a lithium cell gas tightness testing arrangement, includes base (1), its characterized in that: the supporting component (2) is arranged on the base (1), the supporting component (2) is composed of at least two supporting blocks (24) with arc-shaped supporting surfaces, the supporting surfaces of the two supporting blocks (24) are oppositely arranged, the two supporting blocks (24) are in sliding connection relative to the base (1), and the two supporting blocks (24) are close to or far away from each other relative to the base (1); the sealing detection device is characterized in that a sealing detection plate (3) and a fixing component (4) are further arranged on the base (1), the sealing detection plate (3) is fixedly connected onto the base (1), the fixing component (4) is connected onto the base (1) in a sliding mode, the supporting component (2) is located between the sealing detection plate (3) and the fixing component (4), and the sliding direction of the fixing component (4) is perpendicular to the sliding direction of the supporting block (24).

2. The lithium battery airtightness testing apparatus according to claim 1, wherein: the supporting component (2) comprises an active set (21) and a passive set (22), a connecting piece (23) is arranged between the active set (21) and the passive set (22), and the active set (21) and the passive set (22) are respectively composed of two supporting blocks (24).

3. The lithium battery airtightness testing apparatus according to claim 2, wherein: the driving group is characterized in that a first groove (11) is formed in the position, corresponding to the driving group (21), of the base (1), the first groove (11) extends along the sliding direction of the supporting blocks (24), a bidirectional screw (12) is connected to the first groove (11) in a rotating mode, connecting blocks (25) with threaded holes are fixedly connected to the two supporting blocks (24) of the driving group (21), and the thread directions of the threaded holes in the two connecting blocks (25) are opposite.

4. The lithium battery airtightness testing apparatus according to claim 3, wherein: the opening matched with the two-way screw rod (12) is formed in the side wall of the first groove (11), the two-way screw rod (12) extends out of the base (1) from the opening, and the two-way screw rod (12) extends out of one end of the base (1) and is fixedly connected with a rotating handle (13).

5. The lithium battery airtightness testing apparatus according to claim 2, wherein: a second groove (14) parallel to the first groove (11) is formed in the position, corresponding to the passive group (22), of the base (1), a guide rod (15) is fixedly connected into the second groove (14), and a connecting block (25) with a through hole (45) is fixedly connected onto a supporting block (24) of the passive group (22).

6. The lithium battery airtightness testing apparatus according to claim 1, wherein: the fixing component (4) comprises a fixing seat (41) and an abutting piece (42), and an elastic piece is connected between the fixing seat (41) and the abutting piece (42).

7. The lithium battery airtightness testing apparatus according to claim 6, wherein: the elastic piece is a spring (43), a connecting rod (44) is fixedly connected to the fixing seat (41), the spring (43) is sleeved on the connecting rod (44), and a through hole (45) matched with the connecting rod (44) is formed in the center of the abutting piece (42).

8. The lithium battery airtightness testing apparatus according to claim 7, wherein: and the fixed seat (41) and the abutting part (42) are respectively provided with a mounting hole (46) matched with the spring (43).

9. The lithium battery airtightness testing apparatus according to claim 3, wherein: a longitudinal groove (16) communicated with the first groove (11) is formed in the position, corresponding to the fixing component (4), of the base (1), a longitudinal screw (17) is connected in the longitudinal groove (16) in a rotating mode, and a connecting block (25) with a threaded hole is fixedly connected to the fixing component (4); one end of the longitudinal screw rod (17) close to the first groove (11) is fixedly connected with a first bevel gear (18), and a second bevel gear (19) matched with the first bevel gear (18) is fixedly connected to the bidirectional screw rod (12).

10. The lithium battery airtightness testing apparatus according to claim 1, wherein: an air inlet pipe (31) is fixedly connected to the sealing detection plate (3), and a pressure measurement piece (32) is arranged in the air inlet pipe (31).