New energy battery pack end plate

Abstract

The utility model discloses a new energy battery pack end plate which comprises two first profile plates, a spring connecting assembly is jointly connected between the two first profile plates, a mounting guide rail is welded to the bottom of one first profile plate, and the other first profile plate is in sliding connection with the mounting guide rail. The two first profile plates form the end plate, and one of the first profile plates can move, so that the thickness of the end plate can be changed, the end plate can be more flexibly mounted in a place with a very small space between a tray of a battery pack and a single battery stack, and the universality is higher; when being subjected to extrusion force, the side plate moves in the direction close to the first profile plate on the left side and extrudes the first spring and the second spring, so that expansion force generated by the module is absorbed to reduce the extrusion force between the battery cells, and the buffer protection effect can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to an end plate of a new energy battery pack. Background Art

[0002] At present, the end plates currently in use are basically based on conventional fixed end plates. In order to address the expansion problem of battery cells, many solutions have made structural modifications to the end plates. In one of the solutions, a buffer groove is provided in the buffer part of the end plate, which will deform away from the battery cell after being compressed, thereby absorbing the expansion force generated by the module to reduce the squeezing force between the battery cells. However, this type of battery module cannot be pre-tightened, that is, the thickness of the end plate cannot be reduced before being installed in the battery pack. When the space between the tray of the battery pack and the single battery stack is particularly small, this type of end plate cannot be installed. Utility Model Content

[0003] In view of the problems existing in the existing end plates of new energy battery packs, the present utility model is proposed.

[0004] Therefore, the purpose of the utility model is to provide an end plate for a new energy battery pack, which solves the problem that the buffer portion of the end plate has a buffer groove, and when compressed, it will deform in a direction away from the battery cell, thereby absorbing the expansion force generated by the module to reduce the squeezing force between the battery cells. However, this form of battery module cannot be pre-tightened, that is, the thickness of the end plate cannot be reduced before being installed in the battery pack. When the space between the tray of the battery pack and the single battery stack is particularly small, this type of end plate cannot be installed.

[0005] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0006] The new energy battery pack end plate comprises two first profile plates, and a spring connection assembly is commonly connected between the two first profile plates;

[0007] A mounting rail is welded to the bottom of one of the first profile plates, and another of the first profile plates is slidably connected to the mounting rail.

[0008] As a preferred solution of the end plate of the new energy battery pack described in the utility model, wherein: the first profile plate is composed of an integrally formed reinforcement plate, a first bridging plate, a second bridging plate and a side plate.

[0009] As a preferred solution of the end plate of the new energy battery pack described in the utility model, wherein: a first weight-reducing hole is formed between the first bridging plate, the second bridging plate and the side plate, and a weight-reducing notch is formed between the reinforcing plate and the first bridging plate.

[0010] As a preferred solution of the new energy battery pack end plate of the utility model, wherein: the spring connection assembly includes a first connecting pin and a second pin, and the first connecting pin and the second pin both pass through two first profile plates;

[0011] The first connecting pin is sleeved with a first spring, the second pin is sleeved with a second spring, and both ends of the first spring and the second spring are respectively welded to two first profile plates.

[0012] As a preferred solution of the end plate of the new energy battery pack described in the utility model, wherein: a through hole is opened on the mounting guide rail.

[0013] As a preferred solution for the end plate of the new energy battery pack described in the utility model, a slide groove is provided at the top of the mounting guide rail, a slider is welded at the bottom end of the first profile plate on the right side, and the inner wall of the slide groove is slidably connected to the slider.

[0014] As a preferred solution of the end plate of the new energy battery pack described in the utility model, wherein: first discs are welded at both ends of the first connecting pin rod, and second discs are welded at both ends of the second pin rod.

[0015] As a preferred solution of the end plate of the new energy battery pack described in the utility model, wherein: the first profile plate is provided with a first through hole for the first connecting pin to pass through, and a second through hole for the second pin to pass through.

[0016] Compared with existing technologies:

[0017] 1. Two first profile plates constitute the end plate, and one of the first profile plates is movable, so that the thickness of the end plate can be changed, so that it can be more flexibly installed in a place where the space between the tray of the battery pack and the single battery stack is particularly small, and has stronger versatility;

[0018] 2. When subjected to extrusion force, the side panel moves toward the first profile panel on the left side and squeezes the first spring and the second spring, thereby absorbing the expansion force generated by the module to reduce the extrusion force between the battery cells, thereby playing a role of buffering protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure provided by the utility model;

[0020] Figure 2 The utility model provides Figure 1 A cross-sectional view of

[0021] Figure 3 The utility model provides Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 The utility model provides Figure 2 Enlarged view of point B in the middle.

[0023] In the figure: a first profile plate 1, a mounting rail 3, a through hole 4, a reinforcing plate 5, a side plate 6, a first weight-reducing hole 7, a weight-reducing notch 8, a first bridging plate 9, a second bridging plate 10, a first connecting pin 11, a first spring 12, a first disc 13, a second pin 14, a second disc 15, a second spring 16, a slide groove 17, a slider 18, a first through hole 19, a second through hole 20, and a groove 21. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the implementation methods of the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] This utility model provides a new energy battery pack end plate, please refer to Figure 1-4 , comprising two first profile plates 1, wherein a spring connection assembly is commonly connected between the two first profile plates 1;

[0026] A mounting rail 3 is welded to the bottom of one of the first profile plates 1, and the other first profile plate 1 is slidingly connected to the mounting rail 3. The mounting rail 3 has two functions. One is to use the rail 3 to connect with the crossbeam of the car, so an internal threaded hole is opened at the bottom of the mounting rail 3; the other function is to ensure that the two first profile plates 1 are always in a symmetrical state.

[0027] The first profile plate 1 is composed of an integrally formed reinforcement plate 5 , a first bridge plate 9 , a second bridge plate 10 and a side plate 6 .

[0028] A first weight-reducing hole 7 is formed between the first bridge plate 9, the second bridge plate 10 and the side plate 6, and a weight-reducing notch 8 is formed between the reinforcing plate 5 and the first bridge plate 9. The first weight-reducing hole 7 and the weight-reducing notch 8 play a role in reducing weight, making the end plate lighter.

[0029] The spring connection assembly includes a first connection pin 11 and a second pin 14, and the first connection pin 11 and the second pin 14 both pass through the two first profile plates 1;

[0030] The first connecting pin 11 is sleeved with a first spring 12, the second pin 14 is sleeved with a second spring 16, and the two ends of the first spring 12 and the second spring 16 are respectively welded to the two first profile plates 1; the first spring 12 and the second spring 16 use their elastic force to drive the first movable profile plate 1 on the right side to press against the battery pack.

[0031] A through hole 4 is provided on the mounting rail 3. The existence of the through hole 4 can not only reduce the weight of the mounting rail 3, but also use the hole cavity to provide space for bolts fixing the mounting rail 3 and the crossbeam.

[0032] A slide groove 17 is provided at the top of the mounting rail 3, a slider 18 is welded to the bottom of the right first profile plate 1, the inner wall of the slide groove 17 is slidably connected to the slider 18, and both the slide groove 17 and the slider 18 are T-shaped, thereby ensuring the symmetry between the two first profile plates 1.

[0033] The first connecting pin 11 is welded with a first disc 13 at both ends, and the second pin 14 is welded with a second disc 15 at both ends. The first profile plate 1 is provided with a first through hole 19 for the first connecting pin 11 to pass through, and a second through hole 20 for the second pin 14 to pass through, and the first through hole 19 is slidably connected to the first connecting pin 11, and the second through hole 20 is slidably connected to the second pin 14.

[0034] During specific use, the installation of the end plate is achieved by docking the mounting rail 3 with the crossbeam of the automobile; the first movable profile plate 1 on the right side is in contact with the battery module; after being compressed, it will deform in the direction away from the battery cell, that is, the side plate 6 moves towards the first profile plate 1 on the left side, and squeezes the first spring 12 and the second spring 16, thereby absorbing the expansion force generated by the module to reduce the squeezing force between the battery cells; when the squeezing force disappears, the first movable profile plate 1 on the right side is reset under the elastic force of the first spring 12 and the second spring 16.

[0035] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. New energy battery pack end plate, characterized by: It comprises two first profile plates (1), wherein a spring connection assembly is commonly connected between the two first profile plates (1); A mounting rail (3) is welded to the bottom of one of the first profile plates (1), and another of the first profile plates (1) is slidably connected to the mounting rail (3).

2. The new energy battery pack end plate according to claim 1, characterized in that: The first profile plate (1) is composed of an integrally formed reinforcement plate (5), a first bridging plate (9), a second bridging plate (10) and a side plate (6).

3. The new energy battery pack end plate according to claim 2, characterized in that: A first weight-reducing hole (7) is formed between the first bridging plate (9), the second bridging plate (10) and the side plate (6), and a weight-reducing notch (8) is formed between the reinforcing plate (5) and the first bridging plate (9).

4. The new energy battery pack end plate according to claim 1, characterized in that: The spring connection assembly comprises a first connection pin rod (11) and a second pin rod (14), wherein the first connection pin rod (11) and the second pin rod (14) both pass through two first profile plates (1); The first connecting pin rod (11) is sleeved with a first spring (12), the second pin rod (14) is sleeved with a second spring (16), and the two ends of the first spring (12) and the second spring (16) are respectively welded to the two first profile plates (1).

5. The new energy battery pack end plate according to claim 1, characterized in that: The mounting guide rail (3) is provided with a through hole (4).

6. The new energy battery pack end plate according to claim 5, characterized in that: A slide groove (17) is provided at the top end of the installation guide rail (3), a slider (18) is welded at the bottom end of the first profile plate (1) on the right side, and the inner wall of the slide groove (17) is slidably connected to the slider (18).

7. The new energy battery pack end plate according to claim 4, characterized in that: The first connecting pin rod (11) has first discs (13) welded to its two ends, and the second pin rod (14) has second discs (15) welded to its two ends.

8. The new energy battery pack end plate according to claim 7, characterized in that: The first profile plate (1) is provided with a first through hole (19) for the first connecting pin (11) to pass through, and a second through hole (20) for the second pin (14) to pass through.

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