CN212828228U

CN212828228U - Lower shell of automobile power supply battery box

Info

Publication number: CN212828228U
Application number: CN202021673449.1U
Authority: CN
Inventors: 王成武; 徐治东
Original assignee: Wuhu Fosai Hongren Precision Electronics Co ltd
Current assignee: Wuhu Fosai Hongren Precision Electronics Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-03-30
Anticipated expiration: 2030-08-12

Abstract

The utility model discloses a lower shell of an automobile power battery box, which comprises a lower shell and an air cover, wherein the air cover is fixedly arranged at the bottom of an inner cavity of the lower shell through vibration friction welding; studs and first nuts are arranged on the outer wall of the lower shell at intervals, connecting columns are arranged in the inner cavity of the lower shell and are arranged on the periphery of the air cover at intervals, and second nuts are arranged at the tops of the connecting columns; offer the gas pocket on the gas cap, the top of gas pocket is connected with the air cock, and the bottom of gas cap is provided with annular welding chimb downwards, and the diapire of internal chamber of inferior valve corresponds with the gas cap position and has seted up the through-hole, and the through-hole is located the inside of annular welding chimb, and the bottom of annular welding chimb passes through vibration friction weld with the diapire of internal chamber of inferior valve and fixes. The utility model discloses to among the prior art gas lid and down between the casing through nut and bolt fixed connection, manufacturing cost is higher, and the operation is complicated, and technical problem such as production efficiency hangs down improves, the utility model has the advantages of low in production cost, production efficiency height.

Description

Lower shell of automobile power supply battery box

Technical Field

The utility model relates to a power battery case casing technical field especially relates to a lower casing of car power battery case.

Background

Automobile power battery is the indispensable partly of car, the start-up of engine needs power battery to provide powerful start current, in order to fix and protect power battery, be convenient for simultaneously install power battery and automobile body, power battery's outside all can be provided with the box body, can also play dustproof and waterproof effect through the box body, because power battery charge-discharge's in-process can produce gas, and the battery package is inclosed, thereby the inside and outside atmospheric pressure of balanced battery package of needs exhaust, therefore, be provided with the gas lid on the lower casing of power battery box body, set up the gas pocket on the gas lid, play exhaust and radiating effect through the gas lid.

Among the prior art, all through nut and bolt fixed connection between gas lid and the lower casing, in order to guarantee joint strength, fixed connection is realized to 8 sets of connecting pieces (nut + bolt) that generally need between a gas lid and the lower casing to the cost is higher, and in addition, lower casing inner chamber space is limited, and the operation is complicated when connecting, has reduced production efficiency.

To above technical problem, the utility model discloses a lower casing of automobile power supply battery case, the utility model has the advantages of low in production cost, production efficiency height.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a lower casing of automobile power supply battery case to solve among the prior art automobile power supply battery case under the gas lid on the casing and all be through nut and bolt fixed connection down between the casing, manufacturing cost is higher, operates complicacy moreover, has influenced technical problem such as the efficiency of production, the utility model has the advantages of low in production cost, production efficiency height.

The utility model discloses a following technical scheme realizes: the utility model discloses a lower shell of an automobile power battery box, which comprises a lower shell and an air cover, wherein the air cover is fixedly arranged at the bottom of an inner cavity of the lower shell through vibration friction welding; studs and first nuts are arranged on the outer wall of the lower shell at intervals, connecting columns are arranged in the inner cavity of the lower shell and are arranged on the periphery of the air cover at intervals, and second nuts are arranged at the tops of the connecting columns; offer the gas pocket on the gas cap, the top of gas pocket is connected with the air cock, and the bottom of gas cap is provided with annular welding chimb downwards, and the diapire of internal chamber of inferior valve corresponds with the gas cap position and has seted up the through-hole, and the through-hole is located the inside of annular welding chimb, and the bottom of annular welding chimb passes through vibration friction weld with the diapire of internal chamber of inferior valve and fixes.

Further, in order to carry out fine spacing to the gas lid, the outer peripheral edges of through-hole upwards are provided with annular limiting plate, and annular limiting plate is located the inside of annular welding chimb, and the left and right sides of through-hole still is provided with limit baffle, and limit baffle is located the left and right sides of annular welding chimb to both ends and the front and back inner wall fixed connection of lower casing around limit baffle.

Furthermore, the stud, the first nut and the second nut are all integrally injection-molded with the lower shell.

Furthermore, in order to improve the efficiency of exhaust and heat dissipation, the number of the air covers is two, and the two air covers are arranged at the left end and the right end of the bottom of the inner cavity of the lower shell.

The utility model has the advantages of it is following: the utility model discloses a be provided with annular welding chimb downwards in the bottom of gas lid, the bottom of annular welding chimb is fixed through vibration friction weld with the diapire of inferior valve inner chamber, compares in prior art gas lid and lower casing and carries out fixed connection through fasteners such as bolt and nut, can satisfy the requirement of product strength, has saved the use of fastener again, has reduced manufacturing cost by a wide margin, simplifies the process simultaneously, has improved production efficiency.

Drawings

Fig. 1 is a schematic view of a first three-dimensional structure of the present invention;

fig. 2 is a schematic view of a second three-dimensional structure of the present invention;

FIG. 3 is a schematic view of the three-dimensional structure of the present invention when the air cap is not installed;

FIG. 4 is an enlarged view of the structure at A in FIG. 3;

FIG. 5 is a schematic view of the bottom structure of the air cap;

fig. 6 is a schematic view of the top structure of the air cap.

In the figure: 1. a lower housing; 11. a stud; 12. a first nut; 13. connecting columns; 14. a second nut; 15. a through hole; 2. an air cover; 21. air holes; 22. annularly welding a convex edge; 3. an air tap; 4. an annular limiting plate; 5. and a limiting baffle.

Detailed Description

The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example 1

Embodiment 1 discloses a lower case of a battery case for a power supply of an automobile, which, as shown in fig. 1, 2 and 3, includes a lower case 1 and two gas caps 2, the gas caps 2 are fixedly mounted at the bottom of the inner cavity of the lower case 1 by vibration friction welding, specifically, the number of the gas caps 2 is two, and the two gas caps 2 are disposed at the left and right ends of the bottom of the inner cavity of the lower case 1; studs 11 and first nuts 12 are arranged on the outer wall of the lower shell 1 at intervals, connecting columns 13 are arranged in the inner cavity of the lower shell 1, and the connecting columns 13 are arranged on the periphery of the air cover 2 at intervals; as shown in fig. 4, a second nut 14 is arranged at the top of the connecting column 13, and the stud 11, the first nut 12 and the second nut 14 are all integrally injection-molded with the lower shell 1; as shown in fig. 5 and 6, an air hole 21 is formed in the air cap 2, the top of the air hole 21 is connected with the air faucet 3, and an annular welding flange 22 is downwardly arranged at the bottom end of the air cap 2; as shown in fig. 3, the bottom wall of the inner cavity of the lower shell 1 corresponds to the gas cap 2 and is provided with a through hole 15, the through hole 15 is located inside the annular welding flange 22, the bottom end of the annular welding flange 22 is fixed with the bottom wall of the inner cavity of the lower shell 1 through vibration friction welding, specifically, during welding, the gas cap 2 slightly moves in the front, back, left and right directions, so that vibration friction welding between the bottom end of the annular welding flange 22 and the bottom wall of the inner cavity of the lower shell 1 is realized; as shown in fig. 3 and 4, the outer peripheral edge of through-hole 15 upwards is provided with annular limiting plate 4, and annular limiting plate 4 is located the inside of annular welding chimb 22, and the left and right sides of through-hole 15 still is provided with limit baffle 5, and limit baffle 5 is located the left and right sides of annular welding chimb 22 to both ends and the front and back inner wall fixed connection of casing 1 around limit baffle 5, thereby it is spacing to gas lid 2 that it is fine through annular limiting plate 4 and limit baffle 5.

The principle of the utility model is as follows: the utility model discloses a be provided with annular welding chimb 22 downwards in the bottom of gas lid 2, the bottom of annular welding chimb 22 is fixed through vibration friction welding with the diapire of casing 1 inner chamber down, compares in prior art gas lid 2 and lower casing 1 and carries out fixed connection through fasteners such as screw bolt and nut, can satisfy the requirement of product strength, has saved the use of fastener again, has reduced manufacturing cost by a wide margin, simplifies the process simultaneously, has improved production efficiency.

Claims

1. The lower shell of the automobile power supply battery box is characterized by comprising a lower shell and an air cover, wherein the air cover is fixedly installed at the bottom of an inner cavity of the lower shell through vibration friction welding;

studs and first nuts are arranged on the outer wall of the lower shell at intervals, connecting columns are arranged in the inner cavity of the lower shell at intervals and are arranged on the periphery of the air cover at intervals, and second nuts are arranged at the tops of the connecting columns;

offer the gas pocket on the gas cap, the top of gas pocket is connected with the air cock, the bottom of gas cap is provided with annular welding chimb downwards, the diapire of inferior valve inner chamber with the gas cap position correspondence has seted up the through-hole, the through-hole is located the inside of annular welding chimb, the bottom of annular welding chimb with the diapire of inferior valve inner chamber passes through vibration friction weld and fixes.

2. The lower casing of a battery box for a power supply of an automobile according to claim 1, wherein an annular limiting plate is disposed upward from the outer periphery of the through hole, the annular limiting plate is disposed inside the annular welding flange, limiting baffles are disposed on the left and right sides of the through hole, the limiting baffles are disposed on the left and right sides of the annular welding flange, and the front and rear ends of the limiting baffles are fixedly connected to the front and rear inner walls of the lower casing.

3. The lower case of a battery case for a vehicle power supply according to claim 1, wherein the stud, the first nut and the second nut are integrally injection-molded with the lower case.

4. The lower case of a battery case for a vehicle power supply according to claim 1, wherein the number of the air cap is two, and the two air caps are provided at both left and right ends of the bottom of the inner chamber of the lower case.