Battery pack box body and battery pack assembly thereof

Abstract

The utility model discloses a battery pack box body and a battery pack assembly thereof. The battery pack box body comprises a front beam, a middle partition beam and a rear beam which are arranged on the bottom surface of the battery pack box body, a first auxiliary beam is arranged at the upper end of the front beam, a second auxiliary beam is arranged at the upper end of the rear beam, the sum of the heights of the front beam and the first auxiliary beam is equal to the heights of the rear beam and the second auxiliary beam, and the sum of the heights of the front beam and the first auxiliary beam is equal to the height of the middle partition beam. The first auxiliary beam and the second auxiliary beam are arranged on the front beam and the rear beam respectively, so that the sum of the height of the front beam and the height of the first auxiliary beam is equal to the height of the middle partition beam, clamping jaws of the box-entering clamp can be conveniently arranged, the box-entering clamp can be compatible with different battery pack box bodies, and compared with a new box-entering clamp, the box-entering clamp has the advantages that the cost is reduced, and the production efficiency is improved. The scheme of arranging the first auxiliary beam and the second auxiliary beam is relatively low in cost and relatively simple in design, so that the manufacturing cost is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive batteries, specifically to a battery pack housing and its battery pack assembly. Background Technology

[0002] In the current process of placing battery modules into the battery pack using CTP (Cell To Pack, also known as module-less technology) technology, the modules are often directly lowered using the inherent space gaps around the side walls of the battery pack housing. However, for battery pack housing structures with zero gaps, they need to be compressed and pressed before placement. The bottom surface of the battery pack housing has a front beam, a middle partition beam, and a rear beam. The front and rear beams are of the same height, while the middle partition beam is taller than the front beam. For large battery modules used in CTP technology (length greater than 1 meter, width greater than 1 meter), the battery module is divided into two battery modules by the middle partition beam. For example... Figure 1 As shown, when the existing box-loading clamp 1' transports and lowers the battery module, due to the height difference between two adjacent beams, a single battery module cannot be simultaneously restrained by the left and right beams when it is lowered. Therefore, the adjacent two grippers of the box-loading clamp need to be made at different heights. The height of the existing first gripper 11' and the existing third gripper 13' is greater than the height of the existing second gripper 12'. Since the height difference between the two adjacent beams in each type of battery pack box is different, the existing box-loading clamp 1' cannot be compatible with different battery pack boxes. It is necessary to make multiple existing box-loading clamps 1' of different sizes, resulting in high manufacturing costs and low work efficiency.

[0003] Therefore, it is urgent to propose a new solution to the above problems. Summary of the Invention

[0004] This utility model provides a battery pack housing and its battery pack assembly, which can solve the problem that existing battery pack clamps are not compatible with different battery pack housings, requiring the manufacture of various existing battery pack clamps of different sizes, resulting in high manufacturing costs and low work efficiency.

[0005] This utility model provides a battery pack housing, including a front beam, a middle partition beam and a rear beam disposed on the bottom surface of the battery pack housing;

[0006] A first auxiliary beam is provided at the upper end of the front beam, and a second auxiliary beam is provided at the upper end of the rear beam. The sum of the heights of the front beam and the first auxiliary beam is equal to the heights of the rear beam and the second auxiliary beam, and the sum of the heights of the front beam and the first auxiliary beam is equal to the height of the intermediate partition beam.

[0007] Furthermore, a support structure for providing support for the first auxiliary beam is horizontally provided between the first auxiliary beam and the front shell of the box body. The support structure includes a support column, an adjustable foot cup, and a locking member. The bottom of the adjustable foot cup abuts against the front shell of the box body, the top of the adjustable foot cup abuts against one end of the support column, the locking member is sleeved on the screw of the adjustable foot cup, and the end of the support column away from the adjustable foot cup is inserted into the side end of the first auxiliary beam.

[0008] Furthermore, the support column has a threaded groove for the adjustable foot cup at one end near the adjustable foot cup, and a plug-in part is provided at one end of the support column near the first auxiliary beam, and a groove for the plug-in part is provided on the first auxiliary beam.

[0009] Furthermore, the distance L1 between the first auxiliary beam protruding from the inner surface of the front beam on the side facing the battery module is 1 to 1.5 mm.

[0010] Furthermore, the distance L2 between the second auxiliary beam protruding from the inner surface of the rear beam on the side facing the battery module is 1 to 1.5 mm.

[0011] Furthermore, the first auxiliary beam and the second auxiliary beam are detachably fixed above the front beam and the rear beam by multiple bolts, respectively. The first auxiliary beam and the second auxiliary beam are provided with waist-shaped holes for easy left and right movement and positioning. The front beam and the rear beam are provided with threaded holes that cooperate with the bolts.

[0012] Furthermore, the height of the battery module is greater than the sum of the heights of the first auxiliary beam and the front beam.

[0013] Furthermore, the top of both the first and second auxiliary beams has a chamfer on the side near the battery module to facilitate the insertion of the battery module into the box.

[0014] Furthermore, the battery module enters the battery pack housing through an infeed fixture. The infeed fixture includes a first gripper that abuts against the first auxiliary beam, a second gripper that abuts against the middle partition beam, and a third gripper that abuts against the second auxiliary beam. The first gripper, the second gripper, and the third gripper are at the same height.

[0015] This utility model also includes a battery pack assembly, comprising the aforementioned battery pack housing.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model sets a first auxiliary beam and a second auxiliary beam on the front beam and the rear beam respectively, so that the sum of the height of the front beam and the first auxiliary beam is equal to the height of the middle partition beam, thereby facilitating the setting of the gripper of the box-in clamp, and thus enabling it to be compatible with different battery pack boxes. Compared with making a new box-in clamp, the solution of setting the first auxiliary beam and the second auxiliary beam is relatively low in cost and relatively simple in design, thereby reducing manufacturing costs and improving work efficiency.

[0018] 2. This utility model improves the stability during the box insertion process by providing a support structure horizontally between the first auxiliary beam and the front shell of the box body to support the first auxiliary beam.

[0019] 3. This utility model sets a first auxiliary beam that protrudes a certain distance from the inner surface of the front beam on the side facing the battery module, so that the lower end of the battery module is prevented from being scratched by the step on the upper end of the front beam when it is put into the box. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the existing box-in clamp.

[0021] Figure 2 This is a schematic diagram of the overall structure of the battery pack housing of this utility model;

[0022] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0023] Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point B;

[0024] Figure 5 This is a simplified diagram of the battery pack housing and the housing clamp of this utility model;

[0025] Figure 6 This is a cross-sectional view of the support column of this utility model;

[0026] Reference numerals: 1' Existing box-in clamp; 11' Existing first gripper; 12' Existing second gripper; 13' Existing third gripper; 1. Battery pack housing; 11. Front end shell of housing; 21. Front beam; 22. Middle partition beam; 23. Rear beam; 31. First auxiliary beam; 32. Second auxiliary beam; 33. Bolt; 4. Support structure; 41. Support column; 411. Threaded groove; 412. Insertion part; 42. Adjustable feet; 43. Locking element; 5. Battery module; 6. Box-in clamp; 61. First gripper; 62. Second gripper; 63. Third gripper; 65. Lead screw; 66. Handle. Detailed Implementation

[0027] To further understand the utility model's content, features, and effects, the following embodiments are provided, along with accompanying drawings. Figures 2-6 The details are as follows.

[0028] like Figures 2-6 As shown, this embodiment provides a battery pack housing, including a front beam 21, a middle partition beam 22 and a rear beam 23 disposed on the bottom surface of the battery pack housing 1;

[0029] A first auxiliary beam 31 is provided at the upper end of the front beam 21, and a second auxiliary beam 32 is provided at the upper end of the rear beam 23. The sum of the heights of the front beam 21 and the first auxiliary beam 31 is equal to the heights of the rear beam 23 and the second auxiliary beam 32. The sum of the heights of the front beam 21 and the first auxiliary beam 31 is equal to the height of the intermediate partition beam 22.

[0030] This utility model uses a first auxiliary beam and a second auxiliary beam respectively on the front beam and the rear beam to make the sum of the heights of the front beam and the first auxiliary beam equal to the height of the middle partition beam. This facilitates the setting of the grippers of the battery pack clamp, making it compatible with different battery pack boxes. Compared with making a new battery pack clamp, the solution of setting the first auxiliary beam and the second auxiliary beam is relatively low in cost and relatively simple in design, thereby reducing manufacturing costs and improving work efficiency.

[0031] In this embodiment, as Figure 2 and 3 As shown, a support structure 4 is horizontally arranged between the first auxiliary beam 31 and the front shell 11 of the box body to provide support for the first auxiliary beam 31. This support structure includes a support column 41, adjustable feet 42, and a locking element 43. The locking element 43 is preferably a nut, which is adjusted to lock the support column 41 and provide a compressive force of approximately 7000–15000 KN. The bottom of the adjustable feet 42 abuts against the front shell 11 of the box body, and the top of the adjustable feet 42 abuts against one end of the support column 41. The locking element 43 is sleeved on the threaded rod of the adjustable feet 42. The end of the support column 41 away from the adjustable feet 42 is inserted into the side end of the first auxiliary beam 31. This invention improves the stability during the box insertion process by providing a support structure horizontally between the first auxiliary beam and the front shell of the box body to support the first auxiliary beam.

[0032] In this embodiment, as Figure 6 As shown, the support column 41 has a threaded groove 411 for the adjustable foot cup 42 to engage with the screw of the adjustable foot cup 42 at one end, and a plug-in part 412 is provided at the support column 41 near the first auxiliary beam 31. The first auxiliary beam 31 has a groove that engages with the plug-in part 412.

[0033] In this embodiment, as Figure 4As shown, the distance L between the first auxiliary beam 31 protruding from the inner surface of the front beam 21 on the side facing the battery module 5 is 1mm, but it can also be other values ​​between 1 and 1.5mm. The inner surface of the front beam 21 is the side facing the battery module 5. This invention, by setting the first auxiliary beam to protrude from the inner surface of the front beam at a certain distance on the side facing the battery module, prevents the lower end of the battery module from being scratched by the step on the upper end of the front beam when it is placed into the casing.

[0034] In this embodiment, as Figure 5 As shown, similar to the first auxiliary beam 31, the second auxiliary beam 32 protrudes from the inner surface of the rear beam 23 on the side facing the battery module 5 with a distance L1 of 1mm, which can also be other values ​​between 1 and 1.5mm. Additionally, the second auxiliary beam 32 protrudes from the inner surface of the rear beam 23 on the side facing the battery module 5 with a distance L2 of 1mm, which can also be other values ​​between 1 and 1.5mm.

[0035] In this embodiment, as Figure 2 As shown, the first auxiliary beam 31 and the second auxiliary beam 32 are detachably fixed above the front beam 21 and the rear beam 23 by multiple bolts 33. The first auxiliary beam 31 and the second auxiliary beam 32 are provided with waist-shaped holes for easy left and right movement and positioning. This ensures the above-mentioned protruding spacing by moving left and right. The front beam 21 and the rear beam 23 are provided with threaded holes that cooperate with the bolts 33.

[0036] In this embodiment, as Figure 5 As shown, the battery module 5 enters the battery pack housing 1 through the loading clamp 6. The loading clamp 6 includes a first clamp 61 that abuts against the first auxiliary beam 31, a second clamp 62 that abuts against the middle partition beam 22, and a third clamp 63 that abuts against the second auxiliary beam 32. The first clamp 61, the second clamp 62, and the third clamp 63 are at the same height. In addition, a lead screw 65 is provided that passes through the three clamps in sequence. The threads on the left and right sides of the lead screw 65 are turned in opposite directions, so that during rotation, the first clamp 61 and the second clamp 62, and the second clamp 62 and the third clamp 63 can simultaneously press the left and right battery modules 51 respectively. A handle 66 is provided at the end of the lead screw 65 for easy operation.

[0037] In this embodiment, as Figure 4 As shown, the height of the battery module 5 is greater than the sum of the heights of the first auxiliary beam 31 and the front beam 21, which makes it easier for the battery module to be placed into the box.

[0038] In this embodiment, as Figure 4 As shown, the top of the first auxiliary beam 31 and the second auxiliary beam 32 are both provided with chamfers on the side near the battery module 5 to facilitate the battery module 5 entering the box.

[0039] This embodiment also includes a battery pack assembly, comprising the aforementioned battery pack housing.

[0040] The above description of the present invention merely illustrates the implementation methods of the present invention and should not be construed as limiting the scope of the utility model patent, nor is it a limitation on the structure of the present invention in any way. It should be noted that those skilled in the art can make various changes and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A battery pack housing, characterized in that: This includes a front beam (21), a middle partition beam (22), and a rear beam (23) located on the bottom surface of the battery pack housing (1); The front beam (21) is provided with a first auxiliary beam (31) at its upper end, and the rear beam (23) is provided with a second auxiliary beam (32) at its upper end. The sum of the heights of the front beam (21) and the first auxiliary beam (31) is equal to the heights of the rear beam (23) and the second auxiliary beam (32). The sum of the heights of the front beam (21) and the first auxiliary beam (31) is equal to the height of the intermediate partition beam (22).

2. The battery pack housing according to claim 1, characterized in that: A support structure (4) for providing support for the first auxiliary beam (31) is horizontally provided between the first auxiliary beam (31) and the front shell (11) of the box body. The support structure (4) includes a support column (41), an adjustable foot cup (42) and a locking member (43). The bottom of the adjustable foot cup (42) abuts against the front shell (11) of the box body, and the top of the adjustable foot cup (42) abuts against one end of the support column (41). The locking member (43) is sleeved on the screw of the adjustable foot cup (42). The end of the support column (41) away from the adjustable foot cup (42) is inserted into the side end of the first auxiliary beam (31).

3. A battery pack housing according to claim 2, characterized in that: The support column (41) has a threaded groove (411) for the screw of the adjustable foot cup (42) at one end near the adjustable foot cup (42), and a plug-in part (412) is provided at one end of the support column (41) near the first auxiliary beam (31), and a groove for the plug-in part (412) is provided on the first auxiliary beam (31).

4. A battery pack housing according to claim 1, characterized in that: The distance L1 between the first auxiliary beam (31) protruding from the inner surface of the front beam (21) on the side facing the battery module (5) is 1 to 1.5 mm.

5. A battery pack housing according to claim 1, characterized in that: The second auxiliary beam (32) protrudes from the inner surface of the rear beam (23) on the side facing the battery module (5) with a distance L2 of 1 to 1.5 mm.

6. The battery pack housing according to any one of claims 1 to 5, characterized in that: The first auxiliary beam (31) and the second auxiliary beam (32) are detachably fixed above the front beam (21) and the rear beam (23) by multiple bolts (33), respectively. The first auxiliary beam (31) and the second auxiliary beam (32) are provided with waist-shaped holes for easy left and right movement and positioning. The front beam (21) and the rear beam (23) are provided with threaded holes that cooperate with the bolts (33).

7. A battery pack housing according to claim 4 or 5, characterized in that: The height of the battery module (5) is greater than the sum of the heights of the first auxiliary beam (31) and the front beam (21).

8. A battery pack housing according to claim 1, characterized in that: The top of the first auxiliary beam (31) and the second auxiliary beam (32) are both provided with chamfers on the side near the battery module (5) to facilitate the battery module (5) entering the box.

9. A battery pack housing according to claim 4 or 5, characterized in that: The battery module (5) enters the battery pack box (1) through the box-entry clamp (6). The box-entry clamp (6) includes a first clamp (61) that abuts against the first auxiliary beam (31), a second clamp (62) that abuts against the middle partition beam (22), and a third clamp (63) that abuts against the second auxiliary beam (32). The first clamp (61), the second clamp (62), and the third clamp (63) are at the same height.

10. A battery pack assembly, characterized in that: Includes the battery pack housing as described in any one of claims 1 to 9.

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