Reinforced battery edge covering beam and battery pack

Abstract

The utility model relates to the technical field of battery edge covering beams, in particular to a reinforced battery edge covering beam and a battery pack, the reinforced battery edge covering beam comprises an edge beam body, a cavity is arranged in the edge beam body, a reinforcing beam is arranged in the cavity, the reinforcing beam comprises a frame and a reinforcing rib, and the frame is arranged in the cavity. The frame is fixedly connected with the inner wall of the cavity of the boundary beam body, and the reinforcing ribs are fixedly connected with the inner wall of the frame. The rigidity and the strength of the edge beam are enhanced, the modal, the bending rigidity and the extrusion resistance of the battery pack are improved, and the purposes of enhancing the overall safety performance and the mechanical property of the battery pack and the like are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery edge beam, specifically relates to a reinforced battery edge beam and battery package. BACKGROUND

[0002] The utility model discloses a power battery edge beam structure, this power battery edge beam structure adopts the way of integrated forming and connects, reduces the welding workload required by power battery edge beam structure, and can improve the production efficiency and precision of power battery edge beam structure, can also provide better protection for power battery package. But the whole car is extruded in rear crash, measures the battery package edge beam and is extruded, is limited to the size, thickness, internal space etc. of battery package edge beam, and the rigidity of edge beam is often insufficient, and many battery package edge beams cannot bear 200KN or greater extrusion. At the same time, the rigidity of edge beam is also proportional to the battery package mode, and insufficient rigidity will lead to the fact that the mode cannot be significantly improved, and the mode is insufficient in driving, which will have low-frequency resonance, leading to fatigue fracture of the battery package structure. UTILITY MODEL CONTENTS

[0003] The utility model discloses a reinforced battery edge beam and battery package, which strengthens the rigidity and strength of the edge beam, and is beneficial to increasing the battery package mode, bending and torsional rigidity and extrusion resistance, so as to enhance the overall safety performance and mechanical properties of the battery package.

[0004] To solve the above technical problems, in the first aspect, the utility model provides a reinforced battery edge beam, which comprises an edge beam body, a cavity is arranged in the edge beam body, a reinforcing beam is arranged in the cavity, the reinforcing beam comprises a frame and a reinforcing rib, the frame is fixedly connected with the inner wall of the cavity of the edge beam body, and the reinforcing rib is fixedly connected with the inner wall of the frame.

[0005] In some embodiments, a plurality of weight reduction holes are formed in the edge beam body, the weight reduction holes are used to inject structural glue into the cavity, and the frame and the inner wall of the cavity are fixedly connected through the structural glue.

[0006] Further, a plurality of connecting holes are formed in the top and / or bottom of the edge beam body, the edge beam body is connected with the upper cover and / or lower cover of the battery package through the connecting holes, a plurality of rivet bolts are arranged on the frame, and the frame is connected with the edge beam body and the upper cover and / or lower cover through the rivet bolts.

[0007] In some embodiments, an internal rib is arranged in the cavity of the edge beam body, the internal rib divides the cavity into a plurality of cavity units, and the reinforcing beam is arranged in all or part of the cavity units.

[0008] Further, the reinforcing beam is fixedly connected with the internal rib.

[0009] In some embodiments, the cross section of the reinforcing beam is in the shape of a sun or an eye.

[0010] In some embodiments, the side beam body includes a front side beam body, a rear side beam body, and two side side beam bodies, the inner side of the rear side beam body is provided with a reinforced rear side beam, and the reinforced rear side beam is internally provided with the reinforcing beam.

[0011] Further, the outer side of the side beam body is provided with a lug assembly.

[0012] In a second aspect, the utility model provides a battery pack, including upper cover and lower cover, upper cover and lower cover are respectively with the top and bottom of side beam body is screwed.

[0013] Further, the reinforcing beam is screwed with the upper cover or the lower cover.

[0014] The utility model has the advantages of:

[0015] 1. The utility model discloses a reinforcing beam arranged in the inside of the existing side beam body, the reinforcing beam and the side beam body form a multilayer structure, and the reinforcing beam is internally provided with a reinforcing rib, which improves the overall rigidity, strength and extrusion resistance of the battery pack, further increases the overall modal, bending and torsional stiffness and the limit working condition static strength of the battery pack, and the extrusion resistance of the battery pack in the extrusion experiment is improved from 130KN to 240KN, and the safety in the side collision and rear collision of the whole vehicle is improved.

[0016] 2. The side beam body of the utility model is provided with a weight reduction hole, which can reduce the weight of the side beam body, and structure glue can be injected into the cavity in the side beam body through the weight reduction hole, so that the reinforcing beam is directly fixedly connected with the side beam body without any structural improvement of the existing side beam.

[0017] 3. The reinforcing beam, the side beam body and the upper cover and / or the lower cover are integrated in the utility model, so that the battery pack can be connected and fastened without abnormal sound when being impacted and jumping vertically in the harsh road conditions.

[0018] 4. The utility model discloses that the internal rib is arranged in the cavity of the side beam body, which can increase the strength and rigidity of the side beam body, and on the other hand, the cavity can be divided into smaller cavity units, the reinforcing beam is arranged in the cavity unit, so that the overall strength and rigidity of the battery pack are greater, and the reinforcing beam near the top and bottom of the side beam body can be integrated with the upper cover and the lower cover respectively.

[0019] 5. The utility model discloses a reinforcing beam is set up on the lag bolt, make the side beam body can rivet with reinforcing beam, reinforcing beam is far from the lag bolt one side can be connected with internal rib through structural glue, and the connecting mode is simple, does not change the original battery pack structure design. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the structural diagram of the side beam body and reinforcing beam of the utility model;

[0021] Figure 2 It is the structural diagram of the rear side beam body of the utility model;

[0022] Figure 3 It is the sectional view of the rear side beam body of the utility model;

[0023] Figure 4 It is the sectional view of the side beam body of the utility model.

[0024] Fig. 1 - side beam body; 11 - front side beam body; 12 - rear side beam body; 121 reinforcing rear side beam; 13 - side beam body; 14 - internal rib; 15 - weight reduction hole; 16 - connecting hole; 2 - reinforcing beam; 21 - reinforcing rib; 3 - lower cover; 4 - lug assembly. DETAILED DESCRIPTION

[0025] In order to make the technical problem, technical scheme and beneficial effect of the present application more clearly, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and not to limit the present application.

[0026] As Figure 1 The utility model provides a reinforcing type battery pack side beam, including side beam body 1, the inside of side beam body 1 sets up cavity, sets up reinforcing beam 2 in cavity, reinforcing beam 2 includes frame and reinforcing rib 21, frame and the inner wall fixed connection of cavity of side beam body 1, reinforcing rib 21 and the inner wall fixed connection of frame. Figure 1 The structure diagram when reinforcing beam 2 separates from side beam body 1 is shown in the figure. The thickness of frame and reinforcing rib 21 is 2mm.

[0027] It can be understood that by setting reinforcing beam 2 in the inside of existing side beam body 1, reinforcing beam 2 and side beam body 1 form a multilayer structure, and reinforcing beam 2 is provided with reinforcing rib 21 inside, which improves the overall rigidity, strength and extrusion resistance of the battery pack, thereby increasing the overall modal, bending and torsional stiffness and ultimate working condition static strength of the battery pack, and more effectively improving the front and side extrusion resistance of the battery pack in the extrusion experiment from 130KN to 240KN, and improving the safety in side and rear collisions during vehicle driving.

[0028] In some embodiments, as shown in Figure 1 , 2 the side beam body 1 comprises a front side beam body 11, a rear side beam body 12, and two side side beam bodies 13, the inner side of the rear side beam body 12 is provided with a reinforced rear side beam 121, and the reinforced rear side beam 121 is provided with the reinforcing beam 2.

[0029] In some embodiments, as shown in Figure 1 a plurality of weight reduction holes 15 are formed on the side beam body 1, the weight reduction holes 15 are used to inject structural glue into the cavity, and the frame and the inner wall of the cavity are fixedly connected through the structural glue.

[0030] It can be understood that the weight reduction holes 15 can not only reduce the weight of the side beam body 1, but also inject structural glue into the cavity in the side beam body 1 through the weight reduction holes 15, so as to directly fix the reinforcing beam 2 with the side beam body 1, without any structural improvement on the existing side beam, in addition, the weight reduction holes 15 can also partially offset the increased weight caused by the reinforcing beam 2.

[0031] Further, as shown in Figure 2 a plurality of connecting holes 16 are formed on the top and / or bottom of the side beam body 1, the side beam body 1 is connected with the upper cover and / or lower cover 3 of the battery pack through the connecting holes 16, a plurality of pull rivets are arranged on the frame, and the frame is connected with the side beam body 1 and the upper cover and / or lower cover 3 through the pull rivets.

[0032] It should be noted that the frame can be connected with the side beam body 1 and the upper cover and / or lower cover 3 through the pull rivets alone, or the frame and the side beam body 1 are riveted together through the pull rivets, and then connected with the upper cover and / or lower cover 3.

[0033] Since the reinforcing beam 2 is integrated with the side beam body 1 and the upper cover and / or lower cover 3, when the battery pack is impacted or jumps up, the reinforcing beam 2 can be tightly connected and has no abnormal sound under the relatively severe road conditions in the longitudinal direction.

[0034] In some embodiments, as shown in Figure 3 the cavity of the side beam body 1 is provided with an internal rib 14, the internal rib 14 divides the cavity into a plurality of cavity units, and the reinforcing beam 2 is arranged in all or part of the cavity units.

[0035] Further, the reinforcing beam 2 is fixedly connected with the internal rib 14.

[0036] Figure 3Only one internal rib 14 is shown, which is arranged close to the bottom of the side beam body 1, so that the cavity is divided into two cavity units, the reinforcing beam 2 is arranged in the upper cavity unit only, the top of the reinforcing beam 2 is connected with the side beam body 1 and the upper cover by means of a pull rivet, and the bottom of the reinforcing beam 2 is connected with the reinforcing rib 21 by means of structural glue, so as to fasten the reinforcing beam 2 inside the side beam body 1.

[0037] In some embodiments, the cross section of the reinforcing beam 2 is in the shape of a sun or a circle.

[0038] Further, the outer side of the side beam body 1 is provided with a lug assembly 4.

[0039] The utility model also provides a battery pack, including upper cover and lower cover 3, upper cover and lower cover 3 are connected with the top and bottom of side beam body 1 respectively by screw thread, and the reinforcing beam 2 is connected with the upper cover or lower cover 3 by screw thread.

[0040] The utility model adds the structure of the reinforcing beam 2 on the basis of the existing side beam, without changing the structure design of the existing battery pack, improves the extrusion resistance of the battery pack, greatly improves the overall modal, bending torsional stiffness, strengthens the whole vehicle collision safety performance and high cycle fatigue resistance.In addition, the fixing mode of the reinforcing beam 2 is simple, that is, the structural glue and pull rivet are used to fix, without welding, and the reinforcing beam 2 can use Al6061T6 aluminum profile, which is easy to form and more economical.

[0041] The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A reinforced battery pack edge beam, characterized by: The side beam body (1) is internally provided with a cavity, and a reinforcing beam (2) is arranged in the cavity, the reinforcing beam (2) comprises a frame and reinforcing ribs (21), the frame is fixedly connected with the inner wall of the cavity of the side beam body (1), and the reinforcing ribs (21) are fixedly connected with the inner wall of the frame; A plurality of lightening holes (15) are formed in the side beam body (1), the lightening holes (15) are used for injecting structural glue into the cavity, and the frame and the inner wall of the cavity are fixedly connected through the structural glue.

2. The reinforced battery pack bead beam of claim 1, wherein: A plurality of connecting holes (16) are formed in the top and / or bottom of the side beam body (1), the side beam body (1) is connected with the upper cover and / or lower cover (3) of the battery pack through the connecting holes (16), a plurality of rivet bolts are arranged on the frame, and the frame is connected with the side beam body (1) and the upper cover and / or lower cover (3) through the rivet bolts.

3. The reinforced battery pack edge beam according to claim 1 or 2, characterized in that: An internal rib (14) is arranged in the cavity of the side beam body (1), the internal rib (14) divides the cavity into a plurality of cavity units, and the reinforcing beam (2) is arranged in all or part of the cavity units.

4. The reinforced battery pack bead beam of claim 3, wherein: The reinforcing beam (2) is fixedly connected with the internal rib (14).

5. The reinforced battery pack bead beam of claim 1 or 2, wherein: The cross section of the reinforcing beam (2) is in the shape of a sun or an eye.

6. The reinforced battery pack bead beam of claim 1 or 2, wherein: The side beam body (1) comprises a front side beam body (11), a rear side beam body (12) and two side side beam bodies (13), a reinforcing rear side beam (121) is arranged on the inner side of the rear side beam body (12), and the reinforcing beam (2) is arranged in the reinforcing rear side beam (121).

7. The reinforced battery pack bead beam of claim 1 or 2, wherein: A lug assembly (4) is arranged on the outer side of the side beam body (1).

8. A battery pack having the reinforced battery pack edge beam of any one of claims 1 to 7. The side beam body (1) comprises an upper cover and a lower cover (3), and the upper cover and the lower cover (3) are respectively threadedly connected with the top and the bottom of the side beam body (1).

9. The battery pack of claim 8, wherein: The reinforcing beam (2) is threadedly connected with the upper cover or the lower cover (3).

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