Thin-wall light-weight battery pack box body

Abstract

The utility model relates to the technical field of battery packs, in particular to a thin-wall light-weight battery pack box body, which comprises a hard bottom shell and a reelable top cover, the hard bottom shell is provided with a bottom plate and a side vertical plate which are connected with each other, the side vertical plate is provided with a lifting opening, and the lifting opening is used for inserting and installing a detachable lifting lug from top to bottom; the detachable lifting lug comprises a lifting ring at the uppermost end, a fixed hook plate is connected to the lower portion of the lifting ring through a vertical plate, a movable hook plate is arranged between the lifting ring and the fixed hook plate, a transverse movable clamping hook is arranged on the side vertical plate of the hard bottom shell, and the transverse movable clamping hook is extruded by an elastic piece to abut against the detachable lifting lug. The thin-wall light-weight battery pack box body provided by the utility model is reasonable in structure and light in weight, meanwhile, the strength is guaranteed, and the battery pack box body can be taken out after being hoisted into a vehicle body by arranging the detachable lifting lugs, so that the weight of the battery pack box body is reduced, and the edge space of the battery pack box body is not occupied or expanded; and a low-density composite material is used at a safe part, so that the overall weight is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a thin-walled and lightweight battery pack box. Background Art

[0002] With the rapid development of the global new energy vehicle industry, the battery pack, as a core component of electric vehicles, has a direct impact on the vehicle's range and safety. The battery pack's performance must not only meet the physical protection requirements of the battery pack but also meet the lightweight development requirements of the entire vehicle. To ensure structural strength, some battery pack enclosures are made of heavy materials, which inevitably increases the weight of the vehicle and the vehicle's overall weight. This increases the vehicle's weight, reduces energy efficiency, and shortens driving range. Therefore, it is particularly important to continuously develop technologies to improve and upgrade battery pack enclosures to ensure they meet both structural strength requirements and lightweight characteristics. Utility Model Content

[0003] The purpose of the utility model is to provide a thin-walled lightweight battery pack box, which achieves the goal of reducing weight while ensuring structural strength through structural optimization design.

[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0005] A thin-walled, lightweight battery pack case comprises a hard bottom shell and a rollable top cover. The hard bottom shell is provided with a connected bottom plate and side panels. The side panels are provided with hanging holes for inserting and installing detachable lifting ears from top to bottom.

[0006] The detachable lifting ear includes a lifting ring at the top, a fixed hook plate is connected to the lifting ring through a vertical plate, a movable hook plate is arranged between the lifting ring and the fixed hook plate, and a transverse movable hook is arranged on the side vertical plate of the hard bottom shell. The transverse movable hook is squeezed by the elastic part to press against the detachable lifting ear.

[0007] Furthermore, the movable hook plate is sleeved outside the vertical plate and can move up and down based on the vertical plate. A protruding stopper is provided on the vertical plate, and the stopper is located above the movable hook plate. The bottom of the fixed hook plate is a pointed head, and its cross-section gradually increases from bottom to top. The cross-section of the movable hook plate gradually decreases from bottom to top, and the transverse movable hook is provided with a slope inclined from top to bottom on the side near the detachable lifting ear.

[0008] Furthermore, the rollable top cover includes an upper roll skin layer and a lower roll skin layer, and a plurality of support rods are arranged at equal intervals between the two. The upper surface of the support rod is curved and the lower surface is flat. The upper roll skin layer and the lower roll skin layer fit together where they are not blocked by the support rods.

[0009] Furthermore, the side panels of the hard bottom shell are provided with transverse bolt insertion holes and longitudinal bolt insertion holes.

[0010] Furthermore, a transverse movable hook is provided on each side of each detachable lifting ear.

[0011] Furthermore, the movable hook plate moves up and down between the stop block and the fixed hook plate.

[0012] Furthermore, the edge of the rollable top cover is provided with mounting holes that pass through the support rod from top to bottom.

[0013] Furthermore, the bottom plate of the hard bottom shell is stamped with multiple rows of parallel bottom plate reinforcing ribs.

[0014] Furthermore, the hard bottom shell is provided with 8 or more hanging holes, and the detachable hanging ears correspond to the hanging holes one by one.

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

[0016] The thin-walled, lightweight battery pack box provided by this utility model has a reasonable structure, low weight, and guaranteed strength. By providing detachable lifting lugs, the battery pack box can be lifted into the vehicle body and then removed, thereby reducing the weight of the battery pack box. Since the fixed lifting lug design is eliminated, there are no protruding lifting lugs, and the edge space of the battery pack box is not occupied or expanded.

[0017] The thin-walled, lightweight battery pack box provided by the utility model is provided with a rollable top cover, which can be rolled up or opened, thereby improving the efficiency of installation and maintenance. The soft material also has the effect of reducing weight.

[0018] The thin-walled, lightweight battery pack box provided by the utility model is provided with transverse bolt insertion holes and longitudinal bolt insertion holes for installing transverse screw groups and longitudinal screw groups, and is connected to the vehicle body. The connection points are multiple and evenly spaced around the circumference, ensuring that the battery pack box is firmly fixed to the vehicle body.

[0019] The thin-walled, lightweight battery pack box provided by the present invention uses low-density composite materials in safety areas to further reduce the overall weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 for Figure 1 A in the middle is an enlarged schematic diagram;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the detachable hanging ear in the present invention. Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the detachable hanging ear in the present invention. Figure 2 ;

[0025] Figure 5 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0026] Figure 6 This is a schematic diagram of the use state of the utility model;

[0027] Figure 7 This is a schematic structural diagram of the hard bottom shell in the second embodiment of the present utility model;

[0028] Figure 8 This is a schematic cross-sectional view of the side uprights of the hard bottom shell in the second embodiment of the present invention.

[0029] In the figure: 1: hard bottom shell; 1a: lifting mouth; 1b: detachable lifting ear; 1b-1: lifting ring; 1b-2: vertical plate; 1b-3: fixed hook plate; 1b-4: movable hook plate; 1b-5: stopper; 1c: transverse bolt insertion hole; 1d: longitudinal bolt insertion hole; 1e: bottom plate reinforcement rib; 1f: transverse movable hook; 1f-1: slope; 1g: elastic part; 2: retractable top cover; 2a: upper roll skin layer; 2b: lower roll skin layer; 2c: support rod. DETAILED DESCRIPTION

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating the basic structure of the present invention only in a schematic manner. Therefore, they only show components relevant to the present invention. While the present invention is described in detail using structural diagrams, these diagrams are merely examples and should not limit the scope of protection of the present invention.

[0031] See also Figures 1 to 6 Embodiment 1: A thin-walled, lightweight battery pack case includes a hard bottom shell 1 and a rollable top cover 2. The hard bottom shell 1 is provided with a connected bottom plate and side panels. The side panels are provided with hanging openings 1a, which are used to insert and install detachable hanging ears 1b from top to bottom. Specifically, the hard bottom shell 1 is provided with 8 or more hanging openings 1a, and the detachable hanging ears 1b correspond to the hanging openings 1a one by one.

[0032] By providing a detachable lifting ear 1b, the battery pack box can be lifted into the vehicle body and then removed, thereby reducing the weight of the battery pack box. Since the fixed self-contained lifting ear design is removed, there is no lifting ear protruding outward, and the edge space of the battery pack box is not occupied or expanded. Specifically, the detachable lifting ear 1b includes a lifting ring 1b-1 at the top, and a fixed hook plate 1b-3 is connected to the lifting ring 1b-1 through the vertical plate 1b-2. A movable hook plate 1b-4 is provided between the lifting ring 1b-1 and the fixed hook plate 1b-3. A transverse movable hook 1f is provided on the side vertical plate of the hard bottom shell 1. The transverse movable hook 1f is squeezed by the elastic member 1g and presses against the detachable lifting ear 1b. A transverse movable hook 1f is provided on each side of each detachable lifting ear 1b; the movable hook plate 1b-4 is sleeved on the outside of the vertical plate 1b-2 and can be moved up and down based on the vertical plate 1b-2. The vertical plate 1b-2 is provided with a protruding stopper 1b-5. When the stopper 1b-5 moves downward, it can drive the movable hook plate 1b-4 to move downward. The stopper 1b-5 is located above the movable hook plate 1b-4. The bottom of the fixed hook plate 1b-3 is pointed, and its cross section gradually increases from bottom to top. The cross section of the movable hook plate 1b-4 gradually decreases from bottom to top. The transverse movable hook 1f is provided with a slope 1f-1 inclined from top to bottom on one side near the detachable lifting ear 1b. The movable hook plate 1b-4 moves up and down between the stopper 1b-5 and the fixed hook plate 1b-3. Figure 3 The figure shows the connection state of the detachable lifting ear 1b and the hard bottom shell 1. At this time, the fixed hook plate 1b-3 is clamped with the transverse movable hook 1f, and the hard bottom shell 1 can be lifted through the uppermost lifting ring 1b-1; the detachable lifting ear 1b is moved downward again, and the block 1b-5 moves downward with the movable hook plate 1b-4, and the transverse movable hook 1f is separated outward. The inclined surface of the movable hook plate 1b-4 contacts the tip of the transverse movable hook 1f until it is as shown. Figure 4 The detachable lifting ear 1b is shown to be about to be separated from the hard bottom shell 1. Then the detachable lifting ear 1b is moved upward. Due to the action of the inclined surface of the movable hook plate 1b-4, the fixed hook plate 1b-3 below is disengaged from the horizontal movable hook 1f, so that the detachable lifting ear 1b is taken out from the lifting mouth 1a.

[0033] The rollable top cover 2 includes an upper roll skin layer 2a and a lower roll skin layer 2b, and a plurality of support rods 2c are arranged at equal intervals between the two. The upper surface of the support rod 2c is a curved surface and the lower surface is a flat surface. The upper roll skin layer 2a and the lower roll skin layer 2b are fitted together where they are not blocked by the support rod 2c. The edge of the rollable top cover 2 is provided with mounting holes that pass through the upper and lower ends of the support rod 2c. Figure 6 As shown, the top cover 2 can be laid or opened in a curled shape, thereby improving work efficiency, and the soft material also has the effect of further reducing weight.

[0034] In addition, transverse bolt holes 1c and longitudinal bolt holes 1d are provided on the side panels of the hard bottom shell 1 for installing transverse screw groups and longitudinal screw groups, which are connected to the vehicle body. There are many connection points and they are evenly spaced around the circumference to ensure that the battery pack box is firmly fixed to the vehicle body; the bottom plate of the hard bottom shell 1 is stamped with multiple rows of parallel bottom plate reinforcement ribs 1e, which improves the overall rigidity and deformation resistance of the bottom plate.

[0035] As a further optimization solution, a first magnetic strip is provided on the edge of the rollable top cover 2, and a second magnetic strip is provided on the top edge of the side plate of the hard bottom shell 1. The first magnetic strip and the second magnetic strip attract each other to optimize the sealing performance, thereby ensuring good sealing performance of the box and preventing the battery pack from getting damp or dusty.

[0036] Under the premise of ensuring the safety of the battery pack, the use of composite materials with a density lower than that of metal plates helps to reduce the overall weight of the vehicle, thereby improving energy efficiency. Example 2: Combining Figure 7 、 Figure 8 As shown, the difference from Example 1 is that the side panels of the hard bottom shell 1 have hollowed-out through-holes to further reduce weight. Lightweight materials can be filled between the hollowed-out holes to insulate the sides of the battery pack case from the outside world. Lightweight materials must also possess flame retardant properties. This type of sheet material can be reinforced with fiber materials and a flame-retardant resin matrix. The fibers can be short or long, arranged unidirectionally or in a woven structure within the matrix, effectively increasing the strength and rigidity of the sheet material. Furthermore, some of the hollowed-out holes can be used to install electrical connectors for connecting the battery pack case to the outside, eliminating the need for additional holes.

[0037] This utility model features a thin-walled, lightweight battery pack case. By eliminating the fixed, built-in lifting lugs and eliminating the protruding lugs, the case neither occupies nor expands the edge space of the battery pack, thus reducing overall weight. With the rapid development of electric vehicles and energy storage systems, the demand for battery packs is growing. The battery pack case, which serves as the protective outer shell of the battery pack, utilizes lightweight materials and an optimized structural design. This battery pack case helps improve the energy efficiency and range of new energy vehicles.

[0038] The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. It should be pointed out that for those skilled in the art, without departing from the concept of the present invention, any relevant changes, modifications or additions should fall within the scope of protection of the present invention.

Claims

1. A thin-walled, lightweight battery pack case, characterized by: It comprises a hard bottom shell (1) and a rollable top cover (2), wherein the hard bottom shell (1) is provided with a connected bottom plate and side vertical plates, and the side vertical plates are provided with hanging holes (1a), and the hanging holes (1a) are used for inserting and installing detachable hanging ears (1b) from top to bottom; The detachable lifting ear (1b) comprises a lifting ring (1b-1) at the uppermost end, a fixed hook plate (1b-3) being connected to the lower portion of the lifting ring (1b-1) via a vertical plate (1b-2), a movable hook plate (1b-4) being provided between the lifting ring (1b-1) and the fixed hook plate (1b-3), and a transverse movable hook (1f) being provided on a side vertical plate of the hard bottom shell (1), the transverse movable hook (1f) being pressed against the detachable lifting ear (1b) by an elastic member (1g).

2. The thin-walled, lightweight battery pack box according to claim 1, characterized in that: The movable hook plate (1b-4) is sleeved outside the vertical plate (1b-2) and can move up and down based on the vertical plate (1b-2); a protruding stopper (1b-5) is provided on the vertical plate (1b-2); the stopper (1b-5) is located above the movable hook plate (1b-4); the bottom of the fixed hook plate (1b-3) is pointed, and its cross section gradually increases from bottom to top; the cross section of the movable hook plate (1b-4) gradually decreases from bottom to top; the transverse movable hook (1f) is provided with a slope (1f-1) inclined from top to bottom toward the detachable hanging ear (1b) on a side near the detachable hanging ear (1b).

3. The thin-walled, lightweight battery pack box according to claim 1, characterized in that: The rollable top cover (2) comprises an upper roll skin layer (2a) and a lower roll skin layer (2b), with a plurality of support rods (2c) arranged at equal intervals between the two. The upper surface of the support rods (2c) is a curved surface and the lower surface is a flat surface. The upper roll skin layer (2a) and the lower roll skin layer (2b) fit together at a position not blocked by the support rods (2c).

4. The thin-walled, lightweight battery pack box according to claim 1, characterized in that: A transverse bolt insertion hole (1c) and a longitudinal bolt insertion hole (1d) are provided on the side vertical plate of the hard bottom shell (1).

5. The thin-walled, lightweight battery pack box according to claim 2, characterized in that: A transverse movable hook (1f) is provided on each side of each detachable lifting ear (1b).

6. The thin-walled, lightweight battery pack case according to claim 5, characterized in that: The movable hook plate (1b-4) moves up and down between the stop block (1b-5) and the fixed hook plate (1b-3).

7. The thin-walled, lightweight battery pack box according to claim 3, characterized in that: The edge of the retractable top cover (2) is provided with mounting holes that pass through the support rod (2c) from top to bottom.

8. The thin-walled, lightweight battery pack box according to claim 1, characterized in that: The bottom plate of the hard bottom shell (1) is punched with multiple rows of parallel bottom plate reinforcing ribs (1e).

9. The thin-walled, lightweight battery pack box according to claim 1, characterized in that: The hard bottom shell (1) is provided with ≥8 hanging openings (1a), and the detachable hanging ears (1b) correspond one to one with the hanging openings (1a).

Images