Lithium battery pack structure convenient to assemble

Abstract

The utility model provides a lithium battery pack structure convenient to assemble, which belongs to the field of lithium battery pack structures, and comprises a box body, the box body comprises two opposite mounting side walls, elastic sheets are uniformly arranged on the inner walls of the two opposite mounting side walls, mounting holes are formed in the mounting side walls, bearings are fixedly mounted in the mounting holes, and the elastic sheets are arranged on the inner walls of the two opposite mounting side walls. A bearing is installed on the base, a bolt is installed on the bearing, a movable plate is connected to the bolt, the movable plate is in threaded connection with the bolt, heat dissipation pieces are evenly distributed on the movable plate, an avoiding hole for an elastic piece to pass through is formed in the movable plate, and sliding structures are symmetrically installed on the corner walls of the two ends of the movable plate. When the battery module is installed, the clamping plates displace under the action of external force, so that necessary installation space is reserved for the battery module, and after the battery module is in place, the clamping plates are driven by elastic restoring force of the elastic pieces to achieve the stable and reliable fixing effect on the battery module.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery packs, and in particular to a lithium battery pack structure that is easy to assemble. Background Art

[0002] The battery pack's sturdy outer shell protects the battery modules within, preventing damage such as crushing and puncture. Multiple battery modules are enclosed within a common outer shell frame to form a module. Multiple identical or different modules, along with components such as the battery management system, form a battery pack. The battery pack plays a key role in various fields, particularly in electric and new energy vehicles, where it is a core component. Factors such as the battery pack's sealing, stability, and heat dissipation directly impact the safety of the battery system, and ultimately the safety of the entire vehicle.

[0003] In the current lithium-ion battery pack production process, to ensure the smooth installation of lithium-ion battery modules, it is usually necessary to pre-plan and retain a certain amount of clearance. Although this practice is intended to simplify module assembly, it also leads to complexity in subsequent processes. That is, after the module is assembled, specific filling materials must be used to tightly fill the remaining gaps to ensure the stability and safety of the battery pack's internal structure. However, this not only increases the manual operation link, but also indirectly increases production costs, which restricts overall production efficiency. Utility Model Content

[0004] The purpose of the present invention is to provide a lithium battery pack structure that is easy to assemble, which has the advantages of convenient installation of battery modules, no need for filling materials, and labor cost savings, thereby solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A lithium battery pack structure that is easy to assemble is characterized in that it includes: a box body, the box body includes two opposite mounting side walls, elastic sheets are evenly provided on the inner walls of the two opposite mounting side walls, mounting holes are opened on the mounting side walls, bearings are fixedly installed in the mounting holes, bolts are installed on the bearings, a movable plate is connected to the bolts, the movable plate and the bolts are threadedly connected, heat dissipation parts are evenly distributed on the movable plate, avoidance holes for the elastic sheets to pass through are opened on the movable plate, sliding structures are symmetrically installed on the corner walls at both ends of the movable plate, the sliding structure includes a T-shaped slide bar and a guide member, the front end of the T-shaped slide bar is connected to a splint, and the splint is provided with an avoidance groove that cooperates with the heat dissipation part.

[0007] As a further improvement, the heat sink and the elastic sheet are arranged alternately and repeatedly in sequence.

[0008] As a further improvement, a rubber buffer pad is installed on the side of the clamping plate close to the battery module.

[0009] As a further improvement, the guide member has a cavity inside to facilitate the sliding of the T-shaped slide bar, the cavity is filled with oil, the T-shaped slide bar is provided with an oil guide hole, the guide member surface is provided with a through hole that is connected to the cavity and adapted to the T-shaped slide bar, and the through hole is provided with a sealing ring to prevent oil leakage.

[0010] As a further improvement, a baffle is fixedly installed in the box body, and the box body and the baffle together form a circuit compartment.

[0011] As a further improvement, heat sinks are installed on the side walls of the box.

[0012] The beneficial effects of the above technical solution of the utility model are as follows:

[0013] The utility model improves the flexibility and stability of the battery module during installation and fixation by arranging elastic sheets and clamping plates on the inner wall of the battery pack. When the battery module is installed, the clamping plates are displaced under the action of external forces, thereby reserving the necessary installation space for the battery module. After the battery module is in place, the clamping plates are driven by the elastic restoring force of the elastic sheets to achieve a firm and reliable fixation effect on the battery module. At the same time, when the battery pack encounters external vibration or impact, the combination of the elastic sheets and the sliding structure can also effectively absorb and disperse energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0015] Figure 1 It is a schematic diagram of the local structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the sliding structure of the utility model;

[0017] Figure 3 This is an exploded view of the movable plate and splint structure of the utility model.

[0018] Description of reference numerals:

[0019] 1. Box body; 2. Mounting side wall; 3. Sliding structure; 31. T-shaped slide bar; 32. Guide member; 33. Oil; 34. Sealing ring; 35. Oil guide hole; 36. Cavity; 4. Clamp; 41. Avoidance groove; 42. Buffer pad; 5. Movable plate; 51. Avoidance hole; 6. Heat sink; 7. Elastic sheet; 8. Mounting hole; 9. Bolt; 10. Heat sink; 11. Baffle; 12. Circuit compartment. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the existing lithium battery pack production process, in order to ensure the smooth installation of the lithium battery module, it is usually necessary to pre-plan and retain a certain gap. After the lithium battery module is installed, the gap is filled with specific filling materials, which is a relatively cumbersome process. This solution provides elastic sheets and splints on the inner wall of the lithium battery pack. When the lithium battery module is installed, the splint is displaced by external force to leave a gap. After the lithium battery module is installed, the splint is driven by the elastic recovery force of the elastic sheet to apply pressure on the lithium battery module, thereby achieving a stable and reliable fixation effect.

[0023] After introducing the basic principles of the present invention, various non-limiting embodiments of the present invention are described in detail below. The numbers of any elements in the drawings are for illustration only and not for limitation, and any names are for distinction only and do not have any limiting meaning.

[0024] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0025] Example 1 of a lithium battery pack structure that is easy to assemble provided by the present invention:

[0026] like Figure 1-Figure 3As shown, this solution includes: a box body 1, the box body 1 includes two opposite mounting side walls 2, and elastic sheets 7 are evenly provided on the inner walls of the two opposite mounting side walls 2. The elastic sheets 7 are fixedly connected to the mounting side walls 2. A mounting hole 8 is opened on the mounting side wall 2, and a bearing is fixedly installed in the mounting hole 8. A bolt 9 is installed on the bearing, and a movable plate 5 is connected to the bolt 9. The movable plate 5 is connected to the bolt 9 through a threaded connection, and each movable plate 5 is connected by at least two bolts 9. Heat sinks 6 are evenly distributed on the movable plate 5, and the heat sink 6 is fixedly connected to the movable plate 5. The heat sink 6 is made of copper material, and an avoidance hole 51 for the elastic sheet 7 to pass through is opened on the movable plate 5.

[0027] like Figure 1-Figure 3 As shown, sliding structures 3 are symmetrically installed on the corner walls at both ends of the movable plate 5. The sliding structure 3 is fixedly connected to the corner walls. The sliding structure 3 includes a T-shaped slide bar 31 and a guide member 32. The guide member 32 has a cavity 36 inside for facilitating the sliding of the T-shaped slide bar 31. The cavity 36 is filled with oil 33. The T-shaped slide bar 31 is provided with an oil guide hole 35 in the part inside the cavity 36. The surface of the guide member 32 is provided with a through hole that is connected to the cavity 36 and is adapted to the T-shaped slide bar 31. The through hole is provided with a sealing ring 34 for preventing leakage of the oil 33.

[0028] like Figure 1-Figure 3 As shown, the front end of the T-shaped slide bar 31 is connected to a splint 4, which can move closer to or away from the installation side wall 2 under the action of the sliding structure 3. A rubber buffer pad 42 is installed on the splint 4 near the battery module side. The splint 4 is provided with an avoidance groove 41 that cooperates with the heat sink 6. The heat sink 6 and the elastic sheet 7 are arranged alternately and repeatedly in sequence. The heat sink 6 also limits the elastic sheet 7. The distance between the heat sink 6 and the battery module can be adjusted by fine-tuning the bolt 9.

[0029] like Figure 1-Figure 3 As shown, a heat sink 10 for heat dissipation is installed on the installation side wall 2. The heat sink 10 is made of aluminum alloy. A baffle 11 is fixedly installed inside the box body 1. The box body 1 and the baffle 11 together form a circuit compartment 12, which is used to install a protection circuit.

[0030] like Figure 1-Figure 3 As shown, when in use, the splint 4 is displaced under the action of external force, thereby reserving the necessary installation space for the battery module. After the battery module is in place, the splint 4 is driven by the elastic restoring force of the elastic sheet 7 to achieve a firm and reliable fixing effect on it. At the same time, when the battery pack encounters external vibration or impact, the combination of the elastic sheet 7 and the sliding structure 3 can also effectively absorb and disperse energy.

[0031] Example 2 of a lithium battery pack structure that is easy to assemble provided by the present invention:

[0032] The main difference between it and Example 1 is:

[0033] In this embodiment, the guide member 32 and the movable plate 5 are slidably connected, and the guide member 32 is used to limit the movable plate 5, thereby improving the stability of the movable plate 5 during movement.

[0034] While the above-described ideal embodiments of the present invention serve as a guide, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art will appreciate numerous modifications, variations, and alternatives without departing from the concept and spirit of the present invention. It should be understood that in practicing the present invention, various alternatives to the embodiments of the present invention described herein may be employed. The appended claims are intended to define the scope of the present invention and, therefore, cover modular components, equivalents, or alternatives within the scope of these claims.

Claims

1. A lithium battery pack structure that is easy to assemble, characterized in that: include: A box body (1) comprises two opposite mounting side walls (2), the inner walls of the two opposite mounting side walls (2) are uniformly provided with elastic sheets (7), the mounting side walls (2) are provided with mounting holes (8), a bearing is fixedly installed in the mounting holes (8), a bolt (9) is installed on the bearing, a movable plate (5) is connected to the bolt (9), the movable plate (5) and the bolt (9) are connected by threads, heat dissipation elements (6) are uniformly distributed on the movable plate (5), a avoidance hole (51) for the elastic sheets (7) to pass through is provided on the movable plate (5), sliding structures (3) are symmetrically installed on the corner walls at both ends of the movable plate (5), the sliding structure (3) comprises a T-shaped slide bar (31) and a guide member (32), the front end of the T-shaped slide bar (31) is connected to a clamping plate (4), and the clamping plate (4) is provided with an avoidance groove (41) that cooperates with the heat dissipation element (6).

2. The lithium battery pack structure easy to assemble according to claim 1, characterized in that: The heat sink (6) and the elastic sheet (7) are arranged alternately and repeatedly in sequence.

3. The lithium battery pack structure easy to assemble according to claim 1, characterized in that: A rubber buffer pad (42) is installed on the side of the clamping plate (4) close to the battery module.

4. The lithium battery pack structure easy to assemble according to claim 1, characterized in that: The guide member (32) has a cavity (36) inside for facilitating the sliding of the T-shaped slide bar (31), the cavity (36) is filled with oil (33), the T-shaped slide bar (31) is provided with an oil guide hole (35), the surface of the guide member (32) is provided with a through hole that is connected to the cavity (36) and adapted to the T-shaped slide bar (31), and the through hole is provided with a sealing ring (34) for preventing leakage of the oil (33).

5. The lithium battery pack structure easy to assemble according to claim 1, characterized in that: A baffle (11) is fixedly installed in the box body (1), and the box body (1) and the baffle (11) together form a circuit compartment (12).

6. The lithium battery pack structure easy to assemble according to claim 1, characterized in that: The side wall (2) of the box body (1) is installed with a heat sink (10).

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