An improved lithium battery cap

Abstract

The present invention discloses an improved lithium battery cap, including a cap body, a cross-shaped retaining column, a plurality of conical sealing bodies and an elastic sheet. A cross-shaped receiving groove is provided inside the cap body, a plurality of air holes are provided on the top side wall of the cap body, the cross-shaped retaining column is vertically slidably arranged in the receiving groove, the elastic sheet abuts against the top of the cross-shaped retaining column, a plurality of air holes are located above the elastic sheet, a plurality of circular through holes are vertically provided on the cross-shaped retaining column, a plurality of conical sealing bodies are fixedly provided inside the cap body at equal intervals in coordination with the circular through holes, in the initial state, the conical sealing bodies seal the circular through holes, and the elastic sheet blocks the air holes. When the atmospheric pressure in the present invention is greater than the external environment, the cross-shaped retaining column is lifted upward, the circular through holes are connected to the inside, and the internal air is discharged into the top of the cross-shaped retaining column through the circular through holes. Due to the force of the cross-shaped retaining column on the elastic sheet, the air holes are exposed, and the internal air is discharged from the air holes, thereby avoiding the occurrence of bulging inside the battery.

Description

Technical Field

[0001] The invention relates to an improved lithium battery cap, belonging to the technical field of lithium battery caps. Background Art

[0002] The lithium battery cap in the prior art has average sealing performance and cannot effectively discharge the internal air. It is easy to bulge in hot weather and may even endanger the safety of users in severe cases. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide an improved lithium battery cap that can avoid internal bulging.

[0004] To achieve the above-mentioned purpose, the present invention provides an improved lithium battery cap, comprising a cap body, a cross stopper, a plurality of conical sealing bodies and an elastic sheet, wherein a cross-shaped receiving groove is provided inside the cap body, a plurality of air holes are provided on the top side wall of the cap body, the cross stopper is vertically slidably arranged in the receiving groove, the elastic sheet rests against the top of the cross stopper, a plurality of the air holes are located above the elastic sheet, a plurality of the circular through holes are vertically provided on the cross stopper, a plurality of the conical sealing bodies are fixedly arranged inside the cap body at equal intervals in cooperation with the circular through holes, and in an initial state, the conical sealing bodies seal the circular through holes, and the elastic sheets block the air holes.

[0005] Preferably, the elastic sheet is in a conical shape, the center of the elastic sheet bulges downward to form a hemisphere, and an accommodating groove matching the hemisphere is provided on the upper surface of the cross retaining column.

[0006] Preferably, the cross stopper is made of metal.

[0007] Preferably, the cross-blocking column is in the shape of a column with a "X"-shaped cross section.

[0008] Preferably, the circular through holes are distributed in a circular shape with equal intervals.

[0009] Preferably, the ventilation hole is V-shaped.

[0010] The beneficial effects achieved by the present invention are:

[0011] When the atmospheric pressure in the present invention is greater than that in the external environment, the cross baffle is pushed upward, the round through hole is connected to the interior, and the internal air is discharged into the top of the cross baffle through the round through hole. Due to the force of the cross baffle on the elastic sheet, the air vent is exposed, and the internal air is discharged from the air vent to avoid bulging inside the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional view of the present invention.

[0013] The meanings of the marks in the attached drawings are: 1-cap body; 2-cross blocking column; 3-conical sealing body; 4-elastic sheet; 5-accommodating groove; 6-ventilation hole; 7-round through hole. DETAILED DESCRIPTION

[0014] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0015] An improved lithium battery cap comprises a cap body 1, a cross stopper 2, a plurality of conical sealing bodies 3 and an elastic sheet 4, wherein a cross-shaped receiving groove 5 is provided inside the cap body 1, a plurality of air holes 6 are provided on the top side wall of the cap body 1, the cross stopper 2 is vertically slidably arranged in the receiving groove 5, the elastic sheet 4 abuts against the top of the cross stopper 2, a plurality of the air holes 6 are located above the elastic sheet 4, a plurality of the circular through holes 7 are vertically provided on the cross stopper 2, a plurality of the conical sealing bodies 3 are fixedly arranged inside the cap body 1 at equal intervals in cooperation with the circular through holes 7, and in an initial state, the conical sealing body 3 seals the circular through holes 7, and the elastic sheet 4 blocks the air holes 6.

[0016] Furthermore, the elastic sheet 4 is in a conical shape, the center of the elastic sheet 4 bulges downward to form a hemisphere, and the upper surface of the cross blocking column 2 is provided with a receiving groove matching the hemisphere.

[0017] Furthermore, the cross stopper 2 is made of metal.

[0018] Furthermore, the cross-blocking column 2 has a cylindrical shape with a "X"-shaped cross section.

[0019] Furthermore, the circular through holes 7 are distributed in a circular shape with equal intervals.

[0020] Furthermore, the air vent 6 is V-shaped.

[0021] When the atmospheric pressure in the present invention is greater than that in the external environment, the cross baffle 2 is pushed upward, the round through hole is connected to the inside, and the internal air is discharged into the top of the cross baffle 2 through the round through hole. Due to the force of the cross baffle 2 on the elastic sheet 4, the air vent 6 is exposed, and the internal air is discharged from the air vent 6 to avoid bulging inside the battery.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An improved lithium battery cap, characterized in that: The invention comprises a cap body (1), a cross blocking column (2), a plurality of conical sealing bodies (3) and an elastic sheet (4), wherein a cross-shaped receiving groove (5) is provided inside the cap body (1), a plurality of air holes (6) are provided on the top side wall of the cap body (1), the cross blocking column (2) is vertically slidably arranged in the receiving groove (5), the elastic sheet (4) abuts against the top of the cross blocking column (2), a plurality of the air holes (6) are located above the elastic sheet (4), a plurality of circular through holes (7) are vertically provided on the cross blocking column (2), a plurality of the conical sealing bodies (3) are fixedly arranged at equal intervals in cooperation with the circular through holes (7) inside the cap body (1), and in an initial state, the conical sealing bodies (3) seal the circular through holes (7), the elastic sheet (4) blocks the air holes (6), and the air holes (6) are V-shaped; The elastic sheet (4) has a conical shape, the centre of the elastic sheet (4) bulges downward to form a hemisphere, and a receiving groove matching the hemisphere is provided on the upper surface of the cross blocking column (2).

2. The improved lithium battery cap according to claim 1, characterized in that: The cross stop column (2) is made of metal.

3. The improved lithium battery cap according to claim 1, characterized in that: The cross-blocking column (2) has an outer shape of a column with a "X"-shaped cross section.

4. The improved lithium battery cap according to claim 1, characterized in that: The circular through holes (7) are distributed in an annular manner with equal spacing.

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