TWI652417B - Buffer anti-collision device and method of manufacturing the same - Google Patents

Abstract

A buffer anti-collision device and a method for manufacturing the energy absorbing plate thereof, the buffer anti-collision device comprises a frame box and a plurality of energy absorbing plates; the frame box is fixed on the surface of the battery case, the frame box has a accommodating space, and the accommodating space has An inner wall surface; a plurality of energy absorbing plates are fixed in the accommodating space, each energy absorbing plate is fixed on the inner wall surface and forms an angle with the inner wall surface, and each energy absorbing plate has a plurality of periodic concave structure punching holes Metal mesh panels, these punched metal mesh panels form an angle with the surface of the fixed battery compartment.

Description

Buffer anti-collision device and method of manufacturing the same

The present invention relates to a buffer anti-collision device and a method for manufacturing the energy absorbing plate thereof, and more particularly to a buffer anti-collision device using a plurality of punched metal mesh plates having a concave-concave structure combined on one side of a battery case and A method of manufacturing an energy absorbing panel.

Generally, the battery case 11 of the small truck is disposed on the side of the frame 10 (as shown in FIG. 1A), and is usually exposed without protection measures. After the frame 10 is impacted by the side, the structure of the battery case 11 is easily destroyed and damaged. The battery module that is housed is more serious, which causes an explosion (especially when a lithium secondary battery is used), which endangers the safety of the user.

In addition, the energy absorbing structure adopted by some manufacturers is to attach a storage box to the side of the battery case, and install a barrier-like plate-shaped energy absorbing structure inside the storage box (as shown in FIG. 1B), for example, a US patent number. US 7338038 B2 discloses the formation of a corrugated structure 122 at the base 121 of the panel to increase the energy absorbing effect.

However, in the field of electric vehicles, various structures are redesigned toward lightweight targets, and thus the above-described energy absorbing structure still has room for improvement.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cushioning anti-collision device that utilizes a combination of a plurality of periodically recessed and perforated metal mesh panels to enhance the buffering capacity of external forces.

It is still another object of the present invention to provide a method of making the periodically recessed punched metal mesh.

In order to achieve the above object of the buffer anti-collision device, the technical means of the present invention is to provide a buffer anti-collision device suitable for mounting on the surface of a battery case of a built-in battery module, comprising a frame box and a plurality of energy absorbing plates, the frame The box fixing device is on the surface of the battery case, the frame box has an accommodating space, the accommodating space has an inner wall surface, and the plurality of energy absorbing plates are fixed on the inner wall surface of the accommodating space, and each energy absorbing panel is A punched metal mesh plate having a plurality of periodic concave-folded structures is fixed to the accommodating space, and each of the energy absorbing panels forms an angle with the fixed inner wall surface.

In order to achieve the above method, the technical means of the present invention is to provide a buffering prevention The manufacturing method of the collision device comprises the steps of: providing a steel coil or a steel strip as a blank plate, and conveying the blank plate to a stamping processing line for processing; applying one of the stamping processing lines to the blanking processing process to the embryo The plate is punched into a plurality of punching holes to form a punched metal mesh plate; and the punching metal mesh plate is concavely folded into a plurality of periodic concave folding structures by one of the stamping forming processes; and cutting The punched metal mesh plate is the energy absorbing plate.

The invention is characterized in that: the invention has a larger space for collapsing than a general fence structure, Therefore, the stress applied to the battery case after the collision can be dispersed, and the structural design of the present invention is lighter than that of the same size of the barrier type energy absorbing structure. The invention utilizes a punched metal mesh plate to maintain its tensile application, and the metal mesh plate structure not only absorbs energy in a forward impact, but also collides and absorbs energy in a longitudinal direction and a vertical direction, in particular, the structure of the mesh can simultaneously generate multiple The deformation of the direction, so as to maximize the compensation of the direction of the stress during the impact, and then reduce, the pressure to eliminate the chaotic stress. In addition, the energy absorbing plate of the present invention has a simple and rapid process and can be fabricated on the same production line. In addition, the present invention is also suitable for the most suitable combination installation in response to different structural needs.

10‧‧‧ frame

11‧‧‧ battery case

12‧‧‧ Energy absorbing structure

121‧‧‧ base

122‧‧‧ Waveform structure

20‧‧‧ frame

21‧‧‧ battery case

30‧‧‧buffer anti-collision device

31‧‧‧Frame Box

311‧‧‧ accommodating space

3111‧‧‧ inner wall

32‧‧‧ energy absorption panel

321‧‧‧ concave structure

40‧‧‧ Stamping production line

41‧‧‧Cutting unit

42‧‧‧ Stamping unit

50‧‧ ‧ embryo board

51‧‧‧punching

52‧‧‧punched metal stencil

521‧‧‧ side

A, A’‧‧‧ angle

Step S10~S40‧‧‧Method for manufacturing energy absorbing plate

1A is a perspective view of a prior art frame and battery case configuration; FIG. 1B is a perspective view of a prior art plate-shaped energy absorbing structure; FIG. 2 is a view showing a configuration example of the buffered collision preventing device of the present invention; FIG. 4 is a perspective view showing a configuration of a vertically arranged energy absorbing plate according to an embodiment of the buffer anti-collision device of the present invention; and FIG. 4 is a perspective view showing an arrangement of an energy absorbing plate in a horizontal stacking manner according to an embodiment of the buffer anti-collision device of the present invention; 5 is a top cross-sectional view showing the relationship between the energy absorbing plate of the embodiment of FIG. 3 and the inner wall surface of the accommodating space; FIG. 6 is a side view showing the angle between the energy absorbing plate and the inner wall surface of the accommodating space of the embodiment of FIG. FIG. 7 is a front view of the embodiment of FIG. 4; FIG. 8 is a schematic view showing the arrangement of a plurality of energy absorbing plates of the buffer anti-collision device of the present invention in the same direction; FIG. 9 is a schematic view of the buffer anti-collision device of the present invention; FIG. 10 is a flow chart showing a method for manufacturing the energy absorbing plate of the buffer anti-collision device of the present invention; and FIG. 11 is a view showing the system for absorbing the energy absorbing plate of the buffer anti-collision device of the present invention; Schematic diagram of the three-dimensional structure of the method.

The embodiments of the present invention are described in detail below with reference to the accompanying drawings, in which FIG. The components shown are not drawn in the number, shape, size ratio, etc. at the time of implementation, and the actual size of the implementation is a selective design, and the component layout form may be more complicated.

First, please refer to FIG. 2 to FIG. 7. The buffer anti-collision device 30 of the present embodiment is adapted to be mounted on the surface of the battery case 21 of the built-in battery module of the frame 20, for example, applied to the side of the truck frame 20. The surface of the battery case 21 on the outer side of the vehicle (see FIG. 2, the longitudinal axis direction of the frame 20 is the X-axis direction and the Y-axis direction is the lateral direction thereof), and the buffer anti-collision device 30 includes a frame case 31. And a plurality of energy absorbing plates 32 disposed in the frame box 31; as shown in FIG. 3, FIG. 4 and FIG. 7, the frame box 31 fixed on the surface of the battery case 21 has an accommodating space 311. The accommodating space has an inner wall surface 3111. The energy absorbing plates 32 are disposed on the inner wall surface 3111 of the accommodating space 311, and each of the energy absorbing plates 32 includes a plurality of continuous concaves periodically along the plate surface direction. The punched metal mesh plate 52 formed by the folded structure 321 forms an angle (A, A') with the surface of the battery case 21 to be fixed (as shown in FIGS. 3 to 6). In detail, referring to FIG. 3 and FIG. 5, the energy absorbing plate 32 forms an angle with the inner wall surface 3111 in a plan view with respect to the Z-axis direction of the frame 20 (shown in FIG. 2). A is disposed, and since the inner wall surface 3111 is disposed in parallel with the surface of the battery case 21, the energy absorbing plate 32 also forms an angle A with the surface of the battery case 21; again, as shown in FIG. 4 and FIG. The energy absorbing plate 32 is disposed at an angle A' with the inner wall surface 3111 with respect to the X-axis direction of the frame 20 (shown in FIG. 2), and because the inner wall surface 3111 and the battery case are The surfaces of the 21 are arranged in parallel, so that the energy absorbing plate 32 also forms an angle A' with the surface of the battery case 21.

In one embodiment, the frame box 31 is a combination of a plate body or a rod body. The punched metal mesh plate 52 is made of a steel plate or an aluminum plate material. The energy absorbing plates 32 are arranged in parallel with each other at a distance (as shown in FIG. 8) or the energy absorbing plates are arranged in a face-to-face overlapping configuration (as shown in FIG. 9).

Please refer to FIG. 10 and FIG. The step of the method for manufacturing the energy absorbing plate of the embodiment comprises: step S10, providing a steel coil or steel strip as the blank 50, and conveying (along the X'-axis direction in FIG. 11) the blank 50 to a stamping The processing line 40 is processed. In step S20, a punching processing unit 41 is applied to one of the stamping processing lines 40 to perform a punching process (punching along the Z'-axis direction in FIG. 11) for punching the blank 50 into a plurality of punches. The hole 51 forms a punched metal mesh plate 52. Step S30, taking the rush One of the press forming lines 42 is formed by a press forming process (punching along the Z' axis direction in FIG. 11) for punching the punched metal mesh plate 52 into a plurality of cycles. The concave concave structure 321 . In step S40, the punched metal mesh plate 52 is cut into a sheet-shaped energy absorbing plate 32.

In an embodiment, the formed concave structures 321 of the punched metal mesh 52 are continuous or spaced apart.

In one embodiment, the punching holes 51 have a hexagonal cross section, and the punching holes 51 are arranged in a two-dimensional array, and adjacent rows of the punching holes are arranged in a staggered arrangement with each other.

In one embodiment, the punched metal mesh 52 is concavely folded perpendicular to the feed direction of the blank 50, and the position of the concave fold corresponds to the opposite side 521 of the hexagonal punch 51.

Through the above device and process, the present invention utilizes a punched metal mesh plate to maintain its tensile application, the metal mesh plate structure can absorb energy in a positive impact, and can also collaps and absorb energy in the longitudinal and vertical directions, especially a mesh structure. The deformation can be generated in multiple directions at the same time, so that the stress which changes direction during the impact can be maximized, and then reduced, and the pressure is eliminated by the extreme pressure; in addition, the process of the energy absorbing plate of the invention is simple and fast. Can be made on the same production line.

In summary, the present invention is only described as a preferred embodiment or embodiment of the technical means for solving the problem, and is not intended to limit the scope of the invention. That is, the equivalent changes and modifications made in accordance with the scope of the patent application of the present invention or the scope of the invention are covered by the scope of the invention.

Claims (7)

A method for manufacturing an energy absorbing panel, comprising the steps of: providing a steel coil or a steel strip as a blank, and conveying the blank to a stamping processing line for processing; applying a punching processing process of the stamping processing line, The blank plate is punched into a plurality of punched holes to form a punched metal mesh plate, the punched holes are hexagonal in cross section, and the punched holes are arranged in a two-dimensional array; one of the stamping processing lines is stamped and formed The process, the punched metal mesh plate is concavely folded into a plurality of periodic concave fold structures, the punched metal mesh plate is concavely folded perpendicular to the feeding direction of the blank plate, and the position of the concave fold corresponds to the hexagonal shape Opposite sides of the punch; and cutting the punched metal mesh to form the energy absorbing plate. The manufacturing method of claim 1, wherein the formed concave structures of the punched metal mesh are continuous or spaced apart. The manufacturing method according to claim 1, wherein adjacent rows of the punching holes are arranged in a staggered arrangement with each other. The manufacturing method according to claim 1, wherein the energy absorbing plate is in the form of a sheet. The utility model relates to a buffer anti-collision device, which is suitable for being mounted on a surface of a battery case of a built-in battery module. The device comprises: a frame box fixed on the surface of the battery case, the frame box has an accommodating space, the accommodating space Having an inner wall surface, a side facing away from the inner wall is a surface attached to the surface of the battery case; and a plurality of the energy absorbing plates according to claim 1 are fixed in the accommodating space, each energy absorbing The plate is fixed to the inner wall surface and forms an angle with the inner wall surface, and each energy absorbing plate has a plurality of periodic concave folding structures formed on the plate surface of the punched metal mesh plate; The energy absorbing plates are arranged in parallel with each other at a distance or in a face-to-face overlapping configuration. The cushioning anti-collision device of claim 5, wherein the frame box is a combination of a plate body or a rod body. The cushioning anti-collision device of claim 5, wherein the punched metal mesh plate is a steel plate or an aluminum plate.