Battery module fixing structure

Abstract

The utility model discloses a battery module fixing structure. The battery module fixing structure comprises two end plates and a restraining assembly, the two end plates are respectively arranged at the two ends of the plurality of single batteries, the two end plates are respectively a first end plate and a second end plate, first through holes are formed in the upper sides and the lower sides of the first end plate and the second end plate, and the first end plate and the second end plate have preset thicknesses; the restraining assembly comprises a plurality of restraining rods and a plurality of nuts matched with the restraining rods, the restraining rods are bolts, the restraining rods penetrate through the first through holes in the first end plate and the second end plate respectively and are fixedly connected with the nuts on the outer side of the second end plate, each restraining rod comprises a head and a rod body, and the upper end face of each rod body is a plane. Compared with a ribbon, the battery module fixing structure provided by the utility model is more stable, is convenient to disassemble and can be repeatedly used.

Description

Technical Field

[0001] The utility model relates to the technical field of battery modules, in particular to a battery module fixing structure. Background Art

[0002] The battery module usually includes an outer shell and a number of single cells arranged in the outer shell, and the single cells are generally fixed with cable ties and then placed in the outer shell. Cable ties are usually tied around the sides or upper and lower sides of the single cells. They are made of plastic, cloth or aluminum alloy, etc. The strength or toughness of cable ties made of such materials is limited. They are prone to loosening or even breaking after long-term use, causing the single cells in the outer shell to shake. In addition, cable ties are mostly disposable products and cannot be reused. When repairing the battery module, it is sometimes necessary to directly remove the cable ties and then replace them with new ones, which will undoubtedly increase the maintenance cost. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a battery module fixing structure, which is more stable than a cable tie, and is easy to disassemble and reusable.

[0004] The technical solution of the utility model is as follows:

[0005] A battery module fixing structure includes two end plates and a constraint assembly. The two end plates are respectively arranged at the two ends of a plurality of single cells, wherein the two end plates are respectively a first end plate and a second end plate, the first end plate and the second end plate are both provided with first through holes on both upper and lower sides, and the first end plate and the second end plate both have a predetermined thickness; the constraint assembly includes a plurality of constraint rods and a plurality of nuts matching the constraint rods, wherein the constraint rods are bolts, the constraint rods respectively penetrate the first through holes on the first end plate and the second end plate, and are fixedly connected to the nuts on the outer side of the second end plate, wherein the constraint rods include a head and a rod body, and the upper end surface of the rod body is a plane.

[0006] Preferably, the bottom surfaces of the first end plate and the second end plate are both flat.

[0007] Preferably, the number of the restraining rods and the number of the nuts are at least two.

[0008] Furthermore, a second through hole is provided on the first end plate, the second through hole is connected to the first through hole, and the second through hole is located on the side of the first through hole away from the second end plate, and the second through hole is a regular hexagonal hole so that the head of the constraint rod can be embedded in the second through hole.

[0009] Preferably, the upper end surface of the restraint rod head is parallel to the upper end surface of the rod shaft.

[0010] Specifically, the thickness of the first end plate and the second end plate are both set between 2-5 mm.

[0011] Preferably, an insulating plate is provided on the inner side surfaces of the first end plate and the second end plate.

[0012] Specifically, the outer diameter of the constraint rod shaft is not less than 3 mm.

[0013] Preferably, two sides of the first end plate and the second end plate are flush with two sides of the single battery.

[0014] Preferably, a plurality of protrusions are provided on the bottom surfaces of the first end plate and the second end plate.

[0015] The beneficial effects of the utility model are:

[0016] The first end plate and the second end plate are respectively arranged at both ends of the plurality of single cells, and the first end plate and the second end plate are fixed by nuts after the constraint rod penetrates the first end plate and the second end plate, so as to fix the first end plate and the second end plate at both ends of the plurality of single cells. Compared with the cable tie, the fixing structure is more stable, easy to disassemble and can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.

[0018] In the attached picture:

[0019] Figure 1 This is a front view of the battery module fixing structure of the utility model;

[0020] Figure 2 It is a side view of the battery module fixing structure of the utility model.

[0021] The components represented by the reference numerals are:

[0022] 1 constraint rod, 2 nut, 3 first end plate, 4 second end plate, 5 first through hole, 6 second through hole, 7 insulating plate, 8 single battery. DETAILED DESCRIPTION

[0023] See also Figure 1 and Figure 2 The utility model provides a battery module fixing structure, including two end plates and a constraint assembly.

[0024] Two end plates are respectively arranged at the two ends of the plurality of single cells 8, wherein the two end plates are respectively a first end plate 3 and a second end plate 4, the first end plate 3 and the second end plate 4 are both provided with a first through hole 5 on both the upper and lower sides, and the first end plate 3 and the second end plate 4 both have a predetermined thickness, and optionally, the first end plate 3 and the second end plate 4 can be metal plates, such as aluminum alloy or steel plates, and the thickness of the first end plate 3 and the second end plate 4 is both set between 2-5 mm, so that the first end plate 3 and the second end plate 4 have a certain structural strength, thereby being able to prevent the first end plate 3 and the second end plate 4 from being easily damaged. For example, the thickness of the first end plate 3 and the second end plate 4 can be 3 mm.

[0025] The constraint assembly includes multiple constraint rods 1 and multiple nuts 2 matching the constraint rods 1, wherein the constraint rods 1 are bolts, which pass through the first through holes 5 on the first end plate 3 and the second end plate 4 respectively, and are fixedly connected to the nuts 2 on the outside of the second end plate 4.

[0026] The constraint rod 1 includes a head and a rod body, and the outer diameter of the rod body of the constraint rod 1 is not less than 3 mm, so that the rod body of the constraint rod 1 has a certain rigidity, which is conducive to improving its connection strength. The upper end surface of the rod body is a plane. It can be understood that the upper end surface of the rod body is set as a plane, which can match the bottom surface of the single elevator, so that the single battery can maintain a horizontal state in the shell, increase its stability, and avoid shaking in the shell.

[0027] Furthermore, a second through hole 6 is provided on the first end plate 3, the second through hole 6 is connected to the first through hole 5, and the second through hole 6 is located on the side of the first through hole 5 away from the second end plate 4, and the second through hole 6 is a regular hexagonal hole, so that the head of the constraint rod 1 can be embedded in the second through hole 6, so that the upper end surface of the rod body part of the constraint rod 1 can be kept in a horizontal state, so as to improve the stability of the single cell.

[0028] It should be noted that the upper end surface of the rod body portion of the restraint rod above the single battery may not be set to be a plane.

[0029] In one embodiment, the upper end surface of the head of the constraint rod 1 is parallel to the upper end surface of the rod shaft, so that when the head of the constraint rod 1 is embedded in the second through hole 6, the upper end surface of the rod shaft of the constraint rod 1 remains horizontal.

[0030] A first end plate 3 and a second end plate 4 are respectively arranged at both ends of the plurality of single cells, and a restraining rod 1 is used to penetrate the first end plate 3 and the second end plate 4 and then fixed by a nut 2, so that the first end plate 3 and the second end plate 4 are fixed to both ends of the plurality of single cells. Compared with a cable tie, this fixing structure is more stable, easy to disassemble, and reusable.

[0031] Optionally, in order to further increase the stability of the single battery in the housing, the bottom surfaces of the first end plate 3 and the second end plate 4 are both flat, so that the single battery can maintain a horizontal state in the housing.

[0032] In addition, a plurality of protrusions may be provided on the bottom surfaces of the first end plate 3 and the second end plate 4, so as to increase the friction between the bottom surfaces and the outer shell, which is beneficial to improving stability.

[0033] Furthermore, the number of the restraining rods 1 and the nuts 2 is at least two, so as to improve the stability of the connection between the first end plate 3 and the second end plate 4, thereby making the multiple single cells between the first end plate 3 and the second end plate 4 more stable.

[0034] Optionally, an insulating plate 7 is provided on the inner side surfaces of the first end plate 3 and the second end plate 4 , and the insulating plate 7 can keep the single cell and the first end plate 3 or the second end plate 4 in an insulated state to increase the safety of the single cell.

[0035] Optionally, two sides of the first end plate 3 and the second end plate 4 are flush with two sides of the single battery, so that the first end plate 3, the second end plate 4 and the single battery abut against the inner wall of the housing to improve stability.

[0036] The above are only preferred implementations of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery module fixing structure, characterized in that: include: Two end plates are respectively arranged at two ends of a plurality of single batteries (8), wherein the two end plates are respectively a first end plate (3) and a second end plate (4), first through holes (5) are arranged on upper and lower sides of the first end plate (3) and the second end plate (4), and the first end plate (3) and the second end plate (4) both have a predetermined thickness; A constraint assembly comprises a plurality of constraint rods (1) and a plurality of nuts (2) matched with the constraint rods (1), wherein the constraint rods (1) are bolts, the constraint rods (1) respectively penetrate through first through holes (5) on the first end plate (3) and the second end plate (4), and are fixedly connected to the nuts (2) on the outer side of the second end plate (4), wherein the constraint rods (1) comprise a head and a rod body, and the upper end surface of the rod body is a plane.

2. The battery module fixing structure according to claim 1, characterized in that: The bottom surfaces of the first end plate (3) and the second end plate (4) are both flat surfaces.

3. The battery module fixing structure according to claim 1, characterized in that: The first end plate (3) is also provided with a second through hole (6), the second through hole (6) being connected to the first through hole (5), and the second through hole (6) being located on a side of the first through hole (5) away from the second end plate (4), and the second through hole (6) being a regular hexagonal hole so that the head of the restraining rod (1) can be embedded in the second through hole (6).

4. The battery module fixing structure according to claim 3, characterized in that: The upper end surface of the head of the restraining rod (1) is parallel to the upper end surface of the rod body.

5. The battery module fixing structure according to claim 1, characterized in that: The two sides of the first end plate (3) and the second end plate (4) are flush with the two sides of the single battery.

6. The battery module fixing structure according to claim 1, characterized in that: The thickness of the first end plate (3) and the second end plate (4) are both set between 2 and 5 mm.

7. The battery module fixing structure according to claim 1, characterized in that: Insulating plates (7) are provided on the inner side surfaces of the first end plate (3) and the second end plate (4).

8. The battery module fixing structure according to claim 1, characterized in that: The bottom surfaces of the first end plate (3) and the second end plate (4) are provided with a plurality of protrusions.

9. The battery module fixing structure according to claim 1, characterized in that: The number of the restraining rods (1) and the number of the nuts (2) are both at least two.

10. The battery module fixing structure according to claim 9, characterized in that: The outer diameter of the rod body of the restraining rod (1) is not less than 3 mm.

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