Mounting structure for middle lifting point column of battery pack

Abstract

The utility model discloses a battery pack middle lifting point column mounting structure, which relates to the technical field of new energy automobiles, and comprises a cross beam, an upper cover, a frame welding nut, a frame, a frame mounting bolt, a lower box body, a second lifting point column, a second middle nut, a second top nut and a first sealing ring, the frame mounting bolt penetrates through the frame and is fixed on the frame by the frame welding nut; the first middle nut penetrates through the cross beam, the second lifting point column penetrates through the upper cover, the second middle nut and the second lifting point column tightly press the cross beam through threads, the second top nut and the second lifting point column tightly press the upper cover through threads, and the first sealing ring is arranged between the second lifting point column and the upper cover. The utility model can solve the problems of poor air tightness and water leakage easily caused by the sealing mode of the middle nut and the lifting point column of the existing battery pack middle lifting point column mounting structure through the side wall.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicles, in particular to an installation structure of an intermediate suspension point column in a battery pack for a new energy vehicle. Background Art

[0002] As Figure 1 shown, in an existing battery pack, a cross beam 1 is first installed on a lower box body 11, then a first intermediate nut 2 and a suspension point column 9 of a housing are used to tightly press the cross beam 1 through threads, and two second sealing rings are used for sealing. Finally, a first top nut 4 and the first intermediate nut 2 tightly press an upper cover 3 through threads, and a second sealing ring 7 is used for sealing. The first intermediate nut 2 and the suspension point column 9 are sealed through the sealing type on the side wall. It is found that this installation structure is prone to poor airtightness and water leakage during use. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an installation structure of an intermediate suspension point column for a new energy vehicle battery pack, which can solve the problems of poor airtightness and water leakage prone to occur in the existing installation structure of the intermediate suspension point column of the battery pack due to the sealing type of the intermediate nut and the suspension point column through the side wall.

[0004] To solve the above problems, the technical solution of the utility model is: This installation structure of the intermediate suspension point column of the battery pack includes a cross beam, an upper cover, a frame welding nut, a frame, a frame installation bolt and a lower box body; the cross beam is installed on the lower box body, and the frame installation bolt passes through the frame and is fixed on the frame by the frame welding nut; it also includes a second suspension point column of the housing, a second intermediate nut, a second top nut and a first sealing ring; the second suspension point column passes through the upper cover, the second intermediate nut and the second suspension point column tightly press the cross beam through threads, the second top nut and the second suspension point column tightly press the upper cover through threads, and the first sealing ring is arranged between the second suspension point column and the upper cover.

[0005] In the above technical solution, a more specific solution is: The second intermediate nut is a non-standard hexagonal nut.

[0006] Furthermore: The first sealing ring is a circular O-ring.

[0007] Due to adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0008] For the battery pack of the present utility model, first, the crossbeam is installed on the lower box body, then the middle nut presses the crossbeam tightly with the suspension point column of the housing through threads, and finally the top nut presses the upper cover tightly with the suspension point column through threads. An O-ring is used for sealing. There is only one place in the structure that uses the common O-ring sealing structure. The structure is simple, easy to install and reliable, thus solving the problems of poor airtightness and easy water leakage of the battery pack. Description of the Drawings

[0009] Figure 1 is a schematic diagram of the middle installation structure of the existing battery pack;

[0010] Figure 2 is a schematic diagram of the installation structure of the present utility model.

[0011] The reference numerals in the figures are shown as:

[0012] 1. Crossbeam, 2. First middle nut, 3. Upper cover, 4. First top nut, 5. Frame welding nut, 6. Frame, 7. First sealing ring, 8. Second sealing ring, 9. First suspension point column, 10. Frame installation bolt, 11. Lower box body, 12. Second middle nut, 13. Second top nut, 14. Second suspension point column. Detailed Description of the Preferred Embodiment

[0013] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0014] Figure 1 is a middle installation structure of an existing battery pack, including a first middle nut 2, an upper cover 3, a first top nut 4, a frame welding nut 5, a frame 6, a first sealing ring 7, a second sealing ring 8, a suspension point column 9 and a frame installation bolt 10; the first middle nut 2 and the first top nut 4 are corresponding non-standard hexagonal nuts according to the structure and matching of the suspension point column 9. The connection methods and existing problems of all components of the entire middle installation structure have been described in detail in the background art part and will not be elaborated here.

[0015] Figure 2 A middle suspension point column installation structure of a battery pack shown in the figure includes a crossbeam 1, a second middle nut 12, an upper cover 3, a second top nut 13, a frame welding nut 5, a frame 6, a first sealing ring 7, a second suspension point column 14, a frame installation bolt 10 and a lower box body 11.

[0016] The frame mounting bolt 10 is installed inside the second lifting point column 14, passes through the frame 6, and is fixed to the frame 6 by the frame welding nut 5. The second lifting point column 14 of the housing passes through the upper cover 3. The cross beam 1 is installed on the lower box body 11. The second intermediate nut 12 is a non-standard hexagonal nut; the second intermediate nut 12 presses the cross beam 1 through threads with the second lifting point column 14 of the housing, and the second top nut 13 presses the upper cover 3 through threads with the second lifting point column 14. The first sealing ring 7 is arranged between the second lifting point column 14 and the upper cover 3. Both the first sealing ring 7 and the second sealing ring 8 are circular O-ring seals.

[0017] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention; the terms "first", "second", "third" are only used for distinguishing purposes and cannot be construed as indicating or implying relative importance.

Claims

1. An installation structure of a middle suspension point column of a battery pack, comprising a cross beam (1), an upper cover (3), a vehicle frame welding nut (5), a vehicle frame (6), a vehicle frame installation bolt (10) and a lower box body (11); the cross beam (1) is installed on the lower box body (11), and the vehicle frame installation bolt (10) passes through the vehicle frame (6) and is fixed on the vehicle frame (6) by the vehicle frame welding nut (5); characterized in that: It further includes a second lifting point column (14) of the housing, a second intermediate nut (12), a second top nut (13) and a first sealing ring; the second lifting point column (14) passes through the upper cover (3), the second intermediate nut (12) and the second lifting point column (14) press the cross beam (1) through threads, the second top nut (13) and the second lifting point column (14) press the upper cover (3) through threads, and the first sealing ring is arranged between the second lifting point column (14) and the upper cover (3).

2. The installation structure of the middle suspension point column of a battery pack according to claim 1, wherein: The second intermediate nut (12) is a non-standard hexagonal nut.

3. The installation structure of the middle suspension point column of a battery pack according to claim 1, characterized in that: The first sealing ring is a circular O-ring.

4. The installation structure of the middle suspension point column of a battery pack according to claim 2, characterized in that: The first sealing ring is a circular O-ring.

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