Battery cover plate assembly

Abstract

The utility model relates to the technical field of battery cover plates, and discloses a battery cover plate assembly which comprises a shell, a positive plate is mounted in an inner cavity of the shell, a negative plate is mounted in the inner cavity of the shell, a mounting hole is formed in the outer edge of the shell, a cover plate sheet is mounted at the top of the shell, a reel is fixedly assembled at the bottom of the cover plate sheet, and the reel is fixedly assembled on the outer edge of the shell. An inner cavity of the cover plate piece is in threaded connection with a fixing screw, and a pressure relief cylinder is fixedly assembled in the inner cavity of the cover plate piece. According to the battery cover plate assembly, the reel is arranged at the bottom of the cover plate sheet, so that when the length of the electrode sheet is greater than the height of the shell and the cover plate is mounted, the electrode sheet can be stored in the reel only by aligning the head of the electrode sheet with the opening of the reel; the reel made of the insulating material can effectively avoid the short circuit of the battery caused by the contact between the electrode plates and the shell of the battery, and can better play the role of the battery.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cover plates, in particular to a battery cover plate assembly. Background Art

[0002] With the increasing development of electronic products, batteries are being used more and more widely. As electronic products become smaller and more portable, they require a stable and convenient power source. Batteries play a big role in all aspects of modern social life because of their simple structure, easy to carry, simple charging and discharging, unaffected by external climate and temperature, and stable and reliable performance. The battery cover includes a cover plate, a pole and a lug. The quality of the cover directly affects the performance of the battery.

[0003] When traditional equipment is in use, when installing the cover, the length of the electrode sheet is generally greater than the height of the outer shell. Once the electrode sheet contacts the outer shell during the installation of the cover, it will cause a short circuit in the battery, which can easily cause a fire. Once the battery is squeezed or collided, a large amount of gas will be generated inside. If the gas cannot be released well, it will cause the battery to bulge and explode, which will create a major safety hazard and bring a greater safety hazard to the user. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a battery cover assembly, which has the advantages of strong practicability, good stability, and solves the problems raised in the above-mentioned background technology.

[0005] The utility model provides the following technical solutions: a battery cover assembly, comprising an outer shell, an inner cavity of the outer shell being provided with a positive electrode sheet, an inner cavity of the outer shell being provided with a negative electrode sheet, an outer edge of the outer shell being provided with a mounting hole, a cover sheet being provided with a top of the outer shell, a bottom of the cover sheet being fixedly provided with a reel, an inner cavity of the cover sheet being threadedly connected with a fixing screw, an inner cavity of the cover sheet being fixedly provided with a pressure relief cylinder, an outer edge of the pressure relief cylinder being fixedly provided with a pressure relief nozzle, an inner cavity of the pressure relief cylinder being fixedly provided with a sliding rod, an outer wall of the sliding rod being movably sleeved with a spring, an outer wall of the sliding rod being movably sleeved with a sliding block, an outer wall of the sliding block being fixedly provided with a cross bar, an outer wall of the cross bar being fixedly provided with a vertical rod, an outer wall of the vertical rod being fixedly provided with a partition, and an outer wall of the pressure relief nozzle being provided with an air release hole.

[0006] As a preferred technical solution of the utility model, there are two sliding rods, and the two sliding rods are equidistantly arranged on the inner wall of the pressure relief cylinder.

[0007] As a preferred technical solution of the present utility model, the spring is made of high carbon steel.

[0008] As a preferred technical solution of the utility model, the opening shape and size of the reel is larger than the width of the positive electrode sheet and the negative electrode sheet, and the reel is made of insulating plastic.

[0009] As a preferred technical solution of the utility model, the diameter of the partition plate matches the diameter of the inner cavity of the pressure relief cylinder.

[0010] As a preferred technical solution of the utility model, an anti-skid pad is installed on the outer edge of the partition, and the anti-skid pad is made of silicone material.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The battery cover assembly has a reel arranged at the bottom of the cover. When the length of the electrode sheet is greater than the height of the shell, when installing the cover, the electrode sheet can be stored in the reel by aligning the head of the electrode sheet with the opening of the reel. The reel made of insulating material can effectively prevent the electrode sheet from contacting the battery shell and causing a short circuit of the battery, which can better play the role of the battery, further reduce the possibility of potential safety hazards, and improve the safety of the battery during use.

[0013] 2. The battery cover assembly has a pressure relief cylinder and a pressure relief nozzle arranged in the inner cavity of the cover plate. When the battery is pressurized and a large amount of gas is generated inside, the gas enters the pressure relief cylinder and squeezes the partition, which is pushed by the gas. When the partition moves to the sliding rod, the gas can enter the pressure relief nozzle from the inner cavity of the pressure relief cylinder and then be discharged from the battery from the vent hole, thereby avoiding the battery explosion caused by the inability to discharge the gas generated by squeezing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the cover plate of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the pressure relief cylinder of the utility model;

[0017] Figure 4 For this utility model Figure 1 Enlarged structural diagram at A in the middle.

[0018] In the figure: 1. outer shell; 2. positive electrode sheet; 3. negative electrode sheet; 4. reel; 5. cover plate; 6. fixing screw; 7. mounting hole; 8. pressure relief nozzle; 9. pressure relief cylinder; 10. sliding rod; 11. spring; 12. slider; 13. horizontal rod; 14. vertical rod; 15. partition; 16. vent hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 A battery cover assembly comprises a shell 1, a positive electrode sheet 2 is installed in the inner cavity of the shell 1, a negative electrode sheet 3 is installed in the inner cavity of the shell 1, a mounting hole 7 is opened on the outer edge of the shell 1, a cover sheet 5 is installed on the top of the shell 1, a reel 4 is fixedly installed on the bottom of the cover sheet 5, a fixing screw 6 is threadedly connected to the inner cavity of the cover sheet 5, a pressure relief cylinder 9 is fixedly installed in the inner cavity of the cover sheet 5, a pressure relief nozzle 8 is fixedly installed on the outer edge of the pressure relief cylinder 9, a slide bar 10 is fixedly installed in the inner cavity of the pressure relief cylinder 9, a spring 11 is movably sleeved on the outer wall of the slide bar 10, a slide block 12 is movably sleeved on the outer wall of the slide block 10, a cross bar 13 is fixedly installed on the outer wall of the slide block 12, a vertical bar 14 is fixedly installed on the outer wall of the cross bar 13, and a vertical bar 14 is fixedly installed on the outer wall of the vertical bar 14 A partition 15 is installed, and an air vent 16 is provided on the outer wall of the pressure relief nozzle 8. Through the pressure relief cylinder 9 and the pressure relief nozzle 8 arranged in the inner cavity of the cover plate 5, when the battery is pressurized and a large amount of gas is generated inside, the gas enters the pressure relief cylinder 9, and is pushed by the gas by squeezing the partition 15. When the partition 15 moves to the slide bar 10, the gas can enter the pressure relief nozzle 8 from the inner cavity of the pressure relief cylinder 9, and then be discharged from the battery from the air vent 16, thereby avoiding the explosion of the battery due to the inability to discharge the gas generated by squeezing. The positive electrode sheet 2 and the negative electrode sheet 3 can be stored in the reel 4 through the arranged reel 4, thereby avoiding contact with the battery shell 1 to cause a short circuit of the battery, thereby affecting the normal use of the battery.

[0021] See also Figure 3 There are two slide bars 10, and the two slide bars 10 are equidistantly arranged on the inner wall of the pressure relief cylinder 9. Slide bars 10 are installed on both sides. The springs 11 on both sides simultaneously apply elastic force to the partition 15 to ensure that the partition 15 does not move during normal use of the battery, isolate the battery from the external environment, and prevent external impurities from affecting the interior of the battery, thereby causing the battery to be unable to be used normally.

[0022] See also Figure 3The spring 11 is made of high carbon steel. The spring 11 made of high carbon steel can have sufficient supporting strength to hold up the partition 15. It can be pushed open only when the pressure inside the battery is too high, thereby fully isolating the battery from the external environment. The spring 11 made of high carbon steel can also have a sufficiently long service life to ensure the stable use of the battery.

[0023] See also Figure 4 The opening shape and size of the reel 4 is larger than the width of the positive electrode sheet 2 and the negative electrode sheet 3, and the reel 4 is made of insulating plastic. The opening of the reel 4 is larger than the width of the positive electrode sheet 2 and the negative electrode sheet 3, so that the positive electrode sheet 2 and the negative electrode sheet 3 can enter the reel 4 more smoothly, avoiding the positive electrode sheet 2 and the negative electrode sheet 3 from contacting the battery shell 1 when installing the cover plate 5, avoiding a short circuit in the battery, and ensuring the normal use of the battery.

[0024] See also Figure 3 The diameter of the partition 15 matches the diameter of the inner cavity of the pressure relief cylinder 9. During normal use of the battery, the battery should be separated from the external environment to prevent external impurities from entering the battery and affecting the battery's service life.

[0025] See also Figure 3 An anti-skid pad is installed on the outer edge of the partition 15, and the anti-skid pad is made of silicone material. The anti-skid pad can fully isolate the inside of the battery from the outside, preventing external air from entering the inside of the battery. The anti-skid pad made of silicone material can more fully seal the pressure relief cylinder 9.

[0026] Working principle: During the use of the above-mentioned device, align the cover plate 5 with the battery shell 1, align the positive electrode sheet 2 and the negative electrode sheet 3 with the reels 4 on the left and right sides of the cover plate 5, and push the cover plate 5 onto the outer edge of the shell 1. Align the mounting holes 7 and install the cover plate 5 on the battery shell 1. If the battery is overloaded and collided during use, causing a sharp increase in the gas inside the battery, when the pressure is greater than the elastic force of the spring 11, the partition 15 can be pushed, and the gas can be discharged from the inner wall of the pressure relief cylinder 9 into the outside air, which can effectively prevent the battery from bulging and exploding.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery cover assembly, comprising a housing (1), characterized in that: The inner cavity of the shell (1) is installed with a positive electrode sheet (2), the inner cavity of the shell (1) is installed with a negative electrode sheet (3), the outer edge of the shell (1) is provided with a mounting hole (7), the top of the shell (1) is installed with a cover plate (5), the bottom of the cover plate (5) is fixedly equipped with a reel (4), the inner cavity of the cover plate (5) is threadedly connected with a fixing screw (6), the inner cavity of the cover plate (5) is fixedly equipped with a pressure relief cylinder (9), and the outer edge of the pressure relief cylinder (9) is fixedly equipped with a pressure relief cylinder (9). The pressure nozzle (8) is fixedly equipped with a slide rod (10) in the inner cavity of the pressure relief cylinder (9), the outer wall of the slide rod (10) is movably sleeved with a spring (11), the outer wall of the slide rod (10) is movably sleeved with a slider (12), the outer wall of the slider (12) is fixedly equipped with a cross bar (13), the outer wall of the cross bar (13) is fixedly equipped with a vertical bar (14), the outer wall of the vertical bar (14) is fixedly equipped with a partition (15), and the outer wall of the pressure relief nozzle (8) is provided with a venting hole (16).

2. A battery cover assembly according to claim 1, characterized in that: There are two slide bars (10), and the two slide bars (10) are arranged at equal distances on the inner wall of the pressure relief cylinder (9).

3. A battery cover assembly according to claim 1, characterized in that: The spring (11) is made of high carbon steel.

4. A battery cover assembly according to claim 1, characterized in that: The opening shape and size of the reel (4) is larger than the width of the positive electrode sheet (2) and the negative electrode sheet (3), and the reel (4) is made of insulating plastic.

5. A battery cover assembly according to claim 1, characterized in that: The diameter of the partition (15) matches the diameter of the inner cavity of the pressure relief cylinder (9).

6. A battery cover assembly according to claim 1, characterized in that: An anti-skid pad is installed on the outer edge of the partition (15), and the anti-skid pad is made of silica gel material.

Images