CN2603528Y - Safety valve type polar column for battery - Google Patents

Abstract

The utility model discloses a battery safety valve type pole rod which comprises a pole rod and a valve body. The valve body comprises a valve hole and an antidetonating membrane press piece, etc. The pole rod has blended with the safety valve into one whole. The valve body is provided inside the pole rod and is separated by insulating material. The pole rod is fixed on a battery cover from which the pole rod is insulated. A battery medium which can connect external conductors and prevent accidental explosion of the battery is a battery safety valve type pole rod which is not limited by the battery end size and can be installed on small capacity batteries freely. The pole rod is simple in structure and solves the problems that the battery safety is affected because the non one body safety valve body is not firmly welded on the battery cover or the relief pressure value of the battery can not be controled effectively because of limitation of the size of the battery shape.

Description

Battery safety valve pole

technical field

The utility model belongs to the application technical field of battery explosion-proof devices, in particular to a battery safety valve type pole.

Background technique

Most of the currently known battery poles are metal entities placed on the metal battery cover, which cannot solve the problem of battery safety. Since the development of lithium-ion batteries, solving battery safety issues has become particularly prominent. For example, scratches are made on the battery case or battery cover to make it thinner, so as to reduce the compressive strength of the case. When the internal pressure of the battery is too high due to abuse conditions such as overcharge, overdischarge, overheating or short circuit , The above-mentioned parts are deformed and arranged to play a safety role. This design is simple and convenient, but the disadvantage is that it is difficult to control the pressure relief value of the battery due to the limitation of the material of the battery case or battery cover, so the safety factor cannot be guaranteed. In addition, on the battery cover with poles, a safety method is arranged on one or both sides of the poles. This safety method can control the pressure relief value of the battery and can effectively ensure the safety of the battery. The problem is limited by the size of the battery.

Contents of the invention

In order to solve the problems in the known technology, the utility model provides a battery safety valve type pole column which can ensure the safety factor of the battery and is not limited by the external size of the battery.

The technical scheme adopted by the utility model to solve the problems existing in the known technology is: a battery safety valve pole, which is composed of a pole and a valve body, and the valve body includes a valve hole, an explosion-proof membrane pressing block, etc. The pole is integrated with the valve body, and the valve body is located in the pole.

The utility model can also be realized by taking the following technical measures: the pole at the bottom of the valve hole is provided with a horizontal through hole; the valve hole is a stepped hole formed by a large hole and a small hole; There is a screw thread connected with the pressing block, and the explosion-proof membrane arranged in the large hole is provided with an explosion-proof gasket at the upper end, and an explosion-proof gasket at the lower end; the cylinder surface at the end of the pole without a valve hole is flat.

The utility model has the advantages and positive effects: (1) the pole and the safety valve are integrated into one body, and the structure is simple, which prevents the safety of the battery from being affected by the welding of the safety valve body on the battery cover; (2) Limited by the size of the battery, it can be freely installed on a small-capacity battery; (3) It can reliably control the pressure relief value of the battery.

Description of drawings

Fig. 1 is the schematic diagram of the utility model embodiment.

Detailed ways

In order to further understand the invention content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

Please refer to the attached drawings, choose an aluminum rod or other metal rod to clamp one end with a lathe, turn the outer diameter to the required size and length of the end of the pole 1, and process the outer thread connected with the wire, and determine the diameter of the valve hole 2 according to the size of the relief pressure. The length of the valve hole 2 is greater than the sum of the length of one end of the pole 1 plus the length of the platform 5, process the threaded hole connected with the pressure block 6, remove the processing material, clamp the processed end, leave the length of the platform 5, and process the other end , a horizontal hole 7 is processed on the cylinder surface at the other end close to the end surface of the table, the horizontal hole 7 communicates with the valve hole 2, the cylinder surface at the other end is processed into a flat shape, and a horizontal hole 7 parallel to the centerline of the horizontal hole 7 is processed near the end holes for connection with other parts inside the battery. Remove the pole, install the explosion-proof gasket 3, the explosion-proof membrane 4, the explosion-proof gasket 3 in the valve hole 2 in sequence, and finally connect the pressure block 6 to become a complete battery safety valve pole.

The action principle of the utility model is: the insulating material is used to fix the pole on the battery cover, and the pole is insulated from the battery cover. The pole can be used to connect the external wires in the battery, and can also prevent the battery from exploding accidentally. It is a battery safety valve pole that is not limited by the size of the battery end face, and the pole and the safety valve are integrated.

Claims (7)

1. a battery safety valve formula pole is made up of pole, valve body, and valve body comprises valve opening, rupture pressure disc briquetting etc., and it is characterized in that: described pole and valve body are one, and valve body is positioned at pole.

2. battery safety valve formula pole according to claim 1 is characterized in that: the pole of described valve opening bottom is provided with horizontal through hole.

3. battery safety valve formula pole according to claim 1 is characterized in that: described valve opening is the stepped hole that macropore, aperture constitute.

4. battery safety valve formula pole according to claim 3, it is characterized in that: described macropore is provided with the screw thread that is connected with briquetting.

5. battery safety valve formula pole according to claim 3 is characterized in that: the rupture pressure disc upper end that is arranged in the macropore is provided with explosion-proof packing ring.

6. battery safety valve formula pole according to claim 3 is characterized in that: the rupture pressure disc lower end that is arranged in the macropore is provided with explosion-proof packing ring.

7. battery safety valve formula pole according to claim 1 is characterized in that: the cylinder that described pole does not have valve opening one end is a flat.