CN212136491U

CN212136491U - Safety combined cap for resistance welding

Info

Publication number: CN212136491U
Application number: CN202020851448.5U
Authority: CN
Inventors: 张涵
Original assignee: Suzhou Zhongding Youpin Technology Co ltd
Current assignee: Suzhou Zhongding Youpin Technology Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-12-11
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses a resistance welding safety combination block relates to battery technical field, including the sealing washer, the inner wall top fixedly connected with top cap of sealing washer, first air vent has been seted up to one side of top cap, the last fixed surface of top cap is connected with the anticorrosive coating, the inner wall middle part fixedly connected with PCT piece of sealing washer, the one end fixedly connected with compression spring of PCT piece, compression spring keeps away from the one end fixedly connected with baffle of PCT piece, the one end fixedly connected with mounting bracket of baffle, the inner wall top swing joint of top cap has the elastic plate, one side swing joint of elastic plate has the pivot. This resistance welds safe combination block through one side fixed connection metal sheet at the explosion-proof piece, can simplify the assembly flow, has reduced the assemble duration, has improved the packaging efficiency, and the cooperation setting of over-compression spring and elastic plate can absorb the pressure that the top cap received, increases the shock resistance of battery, prevents that the battery from damaging.

Description

Safety combined cap for resistance welding

Technical Field

The utility model relates to the technical field of batteries, specifically be a resistance welds safe combined cover cap.

Background

The lithium ion battery is a rechargeable battery, which mainly depends on the movement of lithium ions between a positive electrode and a negative electrode to work, and Li + is inserted and extracted back and forth between the two electrodes in the charging and discharging process: when the battery is charged, Li + is extracted from the positive electrode and is inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; when the battery is discharged, the lithium ion battery has the characteristics of small volume, light weight, strong electric quantity, environmental protection and the like, and is widely applied to industrial production and daily life.

In chinese utility model patent application no: the utility model discloses a lithium battery cap in CN201921245815.0, this lithium battery cap includes battery case, electric core connection piece and block, and the embedding of battery case top middle part is provided with the electric core connection piece, and battery case top swing joint has the block, and the electric core connection piece is located inside the block. The utility model discloses a be provided with gasket, waterproof ventilated membrane, exhaust piece, exhaust hole, high temperature resistant piece and gas outlet, through the three-layer setting of gasket, exhaust piece and high temperature resistant piece, and between the conductivity through waterproof ventilated membrane, exhaust hole and gas outlet. This lithium cell block is inside not to have buffer structure, receives the easy damage of external force thing, reduces life, is unfavorable for promoting.

Therefore, it is necessary to provide a safety combination cap for resistance welding to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

An object of the utility model is to provide a resistance welds safe combination block to solve the inside buffer structure that does not have of current lithium cell block that provides in the above-mentioned background art, receive external force thing and damage easily, reduce life's problem.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a resistance welding safety combination cap comprises a sealing ring, a top cover is fixedly connected to the top of the inner wall of the sealing ring, a first air vent is formed in one side of the top cover, an anti-corrosion layer is fixedly connected to the upper surface of the top cover, a PCT sheet is fixedly connected to the middle of the inner wall of the sealing ring, a compression spring is fixedly connected to one end of the PCT sheet, a baffle is fixedly connected to one end, away from the PCT sheet, of the compression spring, a mounting frame is fixedly connected to one end of the baffle, an elastic plate is movably connected to the top of the inner wall of the top cover, a rotating shaft is movably connected to one side of the elastic plate, the mounting frame is movably connected with the elastic plate through the rotating shaft, a third air vent is formed in one side of the elastic plate, a first mounting groove is formed in one side of the mounting frame, a second mounting groove, the outer portion of the installation rod is movably connected with a roller, the bottom of the inner wall of the sealing ring is fixedly connected with an explosion-proof sheet, explosion-proof nicks are formed in two sides of the explosion-proof sheet, the bottom of the explosion-proof sheet is fixedly connected with a metal plate, a first air vent is formed in one side of the metal plate, and a connecting hole is formed in the center of the metal plate.

Preferably, the number of the rotating shafts is four, the four rotating shafts are uniformly distributed around the elastic plate, and the four rotating shafts are mutually vertical.

Preferably, the size of the anticorrosive coating is equal to that of one side of the top cover, and the circle center of the anticorrosive coating coincides with that of the top cover.

Preferably, the elastic plate is arc-shaped, and the length of the elastic plate is smaller than that of the top cover.

Preferably, the length of the first installation groove is equal to that of the second installation groove, the first installation groove is parallel to the second installation groove, the baffle is perpendicular to the installation frame, and the first installation groove is parallel to the baffle.

Preferably, there are a plurality of first air vents and second air vents, and the plurality of first air vents and second air vents are uniformly distributed on the top cover and the metal plate.

(III) advantageous effects

Compared with the prior art, the utility model provides a resistance welds safe combined cover cap possesses following beneficial effect:

1. this resistance welds safe combination block through the fixed connection metal sheet in one side of explosion-proof piece, can simplify the assembly flow, has reduced the assemble duration, has improved the packaging efficiency.

2. This resistance welds safe combination block sets up through the cooperation of compression spring and elastic plate, can absorb the pressure that the top cap received, increases the shock resistance of battery, prevents that the battery from damaging.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic sectional view of the structure of the present invention;

FIG. 3 is a schematic top sectional view of the elastic plate structure of the present invention;

fig. 4 is a schematic bottom view of the mounting bracket structure of the present invention.

In the figure: 1. a seal ring; 2. an explosion-proof sheet; 3. a first vent hole; 4. a metal plate; 5. connecting holes; 6. Explosion-proof nicking; 7. a rotating shaft; 8. a second vent hole; 9. a compression spring; 10. a baffle plate; 11. a third air hole; 12. an elastic plate; 13. an anticorrosive layer; 14. a top cover; 15. a PCT sheet; 16. a roller; 17. mounting a rod; 18. a first mounting groove; 19. a second mounting groove; 20. and (7) mounting frames.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a resistance welding safety combination cap includes a sealing ring 1, a top cap 14 is fixedly connected to the top of the inner wall of the sealing ring 1, a second vent hole 8 is formed in one side of the top cap 14, an anti-corrosion layer 13 is fixedly connected to the upper surface of the top cap 14, the anti-corrosion layer 13 can prevent the top cap 14 from being corroded, the service life of the top cap 14 is prolonged, the anti-corrosion layer 13 and the top cap 14 have the same size, the center of the anti-corrosion layer 13 coincides with the center of the top cap 14, a PCT sheet 15 is fixedly connected to the middle of the inner wall of the sealing ring 1, the PCT sheet 15 can cut off current when the temperature of a battery is too high, the battery is prevented from being unexpected due to high temperature, a compression spring 9 is fixedly connected to one end of the PCT sheet 15, a baffle 10 is fixedly connected to one end of the compression spring 9 far from, the device can absorb the pressure received by the top cover 14 through the matching arrangement of the compression spring 9 and the elastic plate 12, the impact resistance of the battery is improved, the battery is prevented from being damaged, the elastic plate 12 is arc-shaped, the length of the elastic plate 12 is smaller than that of the top cover 14, one side of the elastic plate 12 is movably connected with four rotating shafts 7, the four rotating shafts 7 are uniformly distributed around the elastic plate 12, the four rotating shafts 7 are mutually vertical, the mounting frame 20 is movably connected with the elastic plate 12 through the rotating shafts 7, one side of the elastic plate 12 is provided with three air holes 11, the three air holes 11 are four, the four third air holes 11 correspond to the rotating shafts 7, the third air holes 11 can accelerate the passing speed of the gas, meanwhile, the length of the elastic plate 12 between the two opposite third air holes 11 can be longer through corresponding to the rotating shafts 7, the strength cannot be influenced, one side of the mounting frame 20 is provided with, the length of the first mounting groove 18 is equal to that of the second mounting groove 19, the first mounting groove 18 is parallel to the second mounting groove 19, the baffle 10 is perpendicular to the mounting frame 20, the first mounting groove 18 is parallel to the baffle 10, the second mounting groove 19 is formed in the other side of the mounting frame 20, the mounting rods 17 are fixedly connected to the insides of the first mounting groove 18 and the second mounting groove 19, the outside of the mounting rod 17 is movably connected with a rolling shaft 16 to reduce friction between the mounting frame 20 and the PCT sheet 15, the bottom of the inner wall of the sealing ring 1 is fixedly connected with the explosion-proof sheet 2, the two sides of the explosion-proof sheet 2 are provided with the explosion-proof nicks 6, the bottom of the explosion-proof sheet 2 is fixedly connected with the metal plate 4, the assembly process can be simplified by fixedly connecting the metal plate 4 to one side of the explosion-proof sheet 2, the assembly time is reduced, the assembly efficiency is improved, the first vent hole 3, the first vent holes 3 and the second vent holes 8 are uniformly distributed on the top cover 14 and the metal plate 4, and the center of the metal plate 4 is provided with a connecting hole 5.

The working principle is as follows: when the battery falls from a high place or is subjected to pressure, the top cover 14 transmits the pressure to the elastic plate 12, the elastic plate 12 deforms through the rotating shaft 7 under the action of the top cover 14, the mounting frame 20 and the mounting frame 20 move and squeeze the compression spring 9 under the action of the rolling shaft 16, so that the pressure is absorbed, the excessive damage of the top cover 14 is avoided, when the battery is damaged, a large amount of gas is generated inside the lithium ion battery, the gas passes through the second through holes in the metal plate 4 and reaches the cavity formed by the explosion-proof sheet 2 and the metal plate 4, the gas pressure inside the cavity is increased along with the gradual increase of the gas, so that the welding point between the explosion-proof sheet 2 and the metal plate 4 is broken to form an open circuit, the battery is prevented from continuously generating gas abnormally, the gas pressure in the cavity is still increased under the open circuit state, the gas breaks the explosion-proof nicks 6 on the explosion-proof sheet 2 and penetrates through the, and is discharged to the outside through the second vent hole 8 of the top cover 14 to prevent explosion.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a resistance welds safe combined cover cap, includes sealing washer (1), its characterized in that: the sealing ring is characterized in that a top cover (14) is fixedly connected to the top of the inner wall of the sealing ring (1), a second vent hole (8) is formed in one side of the top cover (14), an anticorrosive layer (13) is fixedly connected to the upper surface of the top cover (14), a PCT sheet (15) is fixedly connected to the middle of the inner wall of the sealing ring (1), a compression spring (9) is fixedly connected to one end of the PCT sheet (15), a baffle (10) is fixedly connected to one end, away from the PCT sheet (15), of the compression spring (9), an installation frame (20) is fixedly connected to one end of the baffle (10), an elastic plate (12) is movably connected to the top of the inner wall of the top cover (14), a rotating shaft (7) is movably connected to one side of the elastic plate (12), the installation frame (20) is movably connected to the elastic plate (12) through the rotating shaft (7, first mounting groove (18) have been seted up to one side of mounting bracket (20), second mounting groove (19) have been seted up to the opposite side of mounting bracket (20), first mounting groove (18) and the equal fixedly connected with installation pole (17) of inside of second mounting groove (19), the outside swing joint of installation pole (17) has roller bearing (16), inner wall bottom fixedly connected with explosion-proof piece (2) of sealing washer (1), explosion-proof nick (6) have been seted up to the both sides of explosion-proof piece (2), bottom fixedly connected with metal sheet (4) of explosion-proof piece (2), first air vent (3) have been seted up to one side of metal sheet (4), connecting hole (5) have been seted up in the center department of metal sheet (4).

2. A resistance welding safety combination cap according to claim 1, characterized in that: the number of the rotating shafts (7) is four, the four rotating shafts (7) are uniformly distributed around the elastic plate (12), and the four rotating shafts (7) are mutually vertical.

3. A resistance welding safety combination cap according to claim 1, characterized in that: the size of the anticorrosive layer (13) is equal to that of one side of the top cover (14), and the circle center of the anticorrosive layer (13) is superposed with that of the top cover (14).

4. A resistance welding safety combination cap according to claim 1, characterized in that: the elastic plate (12) is arc-shaped, and the length of the elastic plate (12) is smaller than that of the top cover (14).

5. A resistance welding safety combination cap according to claim 1, characterized in that: the length of the first installation groove (18) is equal to that of the second installation groove (19), the first installation groove (18) is parallel to the second installation groove (19), the baffle plate (10) is perpendicular to the installation frame (20), and the first installation groove (18) is parallel to the baffle plate (10).

6. A resistance welding safety combination cap according to claim 1, characterized in that: the first vent holes (3) and the second vent holes (8) are multiple, and the first vent holes (3) and the second vent holes (8) are uniformly distributed on the top cover (14) and the metal plate (4).