Battery tray front beam, battery tray, battery assembly and electric equipment

Abstract

The utility model relates to a battery tray front beam, a battery tray, a battery assembly and electric equipment, the battery tray front beam is used for being connected to the front end of a tray frame, the battery tray front beam is an integrated die casting, and the battery tray front beam comprises a front beam body used for containing electrical elements; a weight reduction groove is formed in the outer wall of the front beam body. Therefore, the front beam of the battery tray is directly formed by adopting the integrated die casting and is connected with the tray frame, and the front beam of the battery tray is integrated on the die casting without changing the outer envelope of a battery pack, so that the number of parts and tailor-welding tools is greatly reduced, the welding amount is reduced, and compared with tailor-welding design, the welding efficiency is improved. The integral die-casting can reduce the weight of parts, thereby reducing the cost of the battery pack. Meanwhile, in order to further reduce the weight of the battery tray front beam, the outer wall of the front beam body is provided with the weight reducing groove, so that the use of materials can be reduced, and the production cost is further reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular to a front beam of a battery tray, a battery tray, a battery assembly and an electrical device. Background Art

[0002] Compared with traditional power vehicles, electric vehicles have good energy-saving and environmental protection effects and have been favored by more and more people. The battery pack is the core component of electric vehicles. It is loaded with a certain number of battery modules to store electrical energy as a source of power for driving.

[0003] In the case where the outer envelope of the battery pack is relatively irregular, the irregular part is mainly the shape of the die-cast front beam at the front end of the tray. In the related art, a simple multi-section profile welding scheme is adopted to weld the die-cast front beam as a separate part first, and then weld it to the tray frame. The irregular part of the irregular battery pack needs to be welded multiple times, which is prone to air leakage and requires more welding tools. Utility Model Content

[0004] The purpose of the present disclosure is to provide a battery tray front beam, a battery tray, a battery assembly and an electrical device to at least partially solve the problems existing in the related art.

[0005] In order to achieve the above objectives, the present disclosure provides a battery tray front beam for connecting to the front end of a tray frame, wherein the battery tray front beam is an integral die-casting, and comprises a front beam body for accommodating electrical components, wherein a weight-reducing groove is formed on an outer wall of the front beam body.

[0006] Optionally, the front beam body includes a bottom plate, two oppositely arranged side plates and a side plate connected between the two side plates, the two side plates and one side plate are respectively connected to the outer peripheral edges of the bottom plate, and together with the bottom plate form a accommodating cavity for accommodating electrical components, and the weight-reducing groove is opened on the outer wall of the side plate and / or the outer wall of the bottom plate.

[0007] Optionally, the outer wall of the side panel is provided with the weight-reducing groove, and the distance L1 between the bottom wall of the weight-reducing groove on the side panel and the inner wall of the side panel is 2 mm-4 mm.

[0008] Optionally, the outer wall of the bottom plate is provided with the weight-reducing groove, and a distance L2 between the bottom wall of the weight-reducing groove on the bottom plate and the inner wall of the bottom plate is 2 mm-4 mm.

[0009] Optionally, the battery tray front beam further comprises a connection portion for connecting to the tray frame.

[0010] Optionally, the connecting portion is connected to an end of the side panel away from the side panel, and the connecting portion protrudes vertically from the side panel, the outer wall of the side panel is provided with the weight reducing groove, and the minimum distance between the side wall of the weight reducing groove close to the connecting portion and the side wall of the connecting portion facing the side panel is greater than or equal to 30 mm.

[0011] Optionally, reinforcing ribs are provided in the weight-reducing groove.

[0012] Optionally, the reinforcing ribs include first reinforcing ribs and second reinforcing ribs arranged to intersect each other, and at least one of the first reinforcing ribs and at least one of the second reinforcing ribs are arranged in the weight-reducing groove.

[0013] Optionally, a plurality of the first reinforcing ribs and / or a plurality of the second reinforcing ribs arranged at intervals are provided in the weight-reducing groove, and the distance between adjacent first reinforcing ribs and / or the distance between adjacent second reinforcing ribs is 40 mm-60 mm.

[0014] Optionally, the thickness of the reinforcing rib is 3mm-4mm.

[0015] According to a second aspect of the present disclosure, a battery tray is further provided, comprising a tray frame and the above-mentioned front beam of the battery tray, wherein the front beam of the battery tray is welded to the tray frame.

[0016] According to a third aspect of the present disclosure, a battery assembly is also provided, comprising the above-mentioned battery tray.

[0017] According to a fourth aspect of the present disclosure, there is also provided an electrical device comprising the above-mentioned battery assembly.

[0018] Through the above technical solution, the front beam of the battery tray is directly formed by an integrated die casting and connected to the tray frame. Without changing the outer envelope of the battery pack, the front beam of the battery tray is integrated into a die casting, which not only greatly reduces the number of parts and welding fixtures, but also reduces the amount of welding. Compared with the welding design, the integrated die casting can reduce the weight of the parts, thereby reducing the cost of the battery pack. At the same time, in order to further reduce the weight of the front beam of the battery tray, a weight reduction groove is set on the outer wall of the front beam body to reduce the use of materials and further reduce production costs.

[0019] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0021] Figure 1 is a schematic structural diagram of a front beam of a battery tray provided by an exemplary embodiment of the present disclosure;

[0022] Figure 2 is a bottom view of a front beam of a battery tray provided by an exemplary embodiment of the present disclosure;

[0023] Figure 3 is a side view of a front beam of a battery tray provided by an exemplary embodiment of the present disclosure;

[0024] Figure 4 is a cross-sectional view of a front beam of a battery tray provided by an exemplary embodiment of the present disclosure Figure 1 ;

[0025] Figure 5 is a cross-sectional view of a front beam of a battery tray provided by an exemplary embodiment of the present disclosure Figure 2 ;

[0026] Figure 6 is a schematic structural diagram of a battery tray provided by an exemplary embodiment of the present disclosure;

[0027] Figure 7 is a schematic diagram of the disassembly of a front beam and a mold of a battery tray provided by an exemplary embodiment of the present disclosure;

[0028] Figure 8 It is a schematic diagram of the disassembly of the front beam and the movable and fixed mold of the battery tray provided by an exemplary embodiment of the present disclosure;

[0029] Fig. 9 It is a disassembled front view of a front beam and a movable fixed mold of a battery tray provided in an exemplary embodiment of the present disclosure;

[0030] Fig.10 1 is a disassembled top view of a front beam and a slider assembly of a battery tray provided in an exemplary embodiment of the present disclosure.

[0031] Description of Reference Numerals

[0032] 10 Pallet frame 1 Front beam body

[0033] 101 weight reduction groove 102 reinforcement rib

[0034] 1021 First reinforcement rib 1022 Second reinforcement rib

[0035] 11 bottom plate 12 side plate

[0036] 13 Side plate 2 connection

[0037] 21 Avoidance hole 31 Fixed mold

[0038] 32 movable mold 41 first slide

[0039] 42 Second slider 43 Third slider

[0040] 44 Fourth Slider DETAILED DESCRIPTION

[0041] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0042] In the present disclosure, unless otherwise stated, "inside" and "outside" refer to the outline of the corresponding parts. The terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have order or importance. In the present disclosure, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0043] Reference Figures 1 to 5 The present disclosure provides a front beam of a battery tray, which is used to be connected to the front end of a tray frame 10. The front beam of the battery tray is an integrated die-casting part. The front beam of the battery tray may include a front beam body 1 for accommodating electrical components, and the outer wall of the front beam body 1 is formed with a weight-reducing groove 101. It should be noted that the front beam body 1 forms a receiving cavity for accommodating electrical components, and the outer wall of the front beam body 1 is the wall surface of the front beam body 1 away from the receiving cavity.

[0044] Through the above technical solution, the front beam of the battery tray is directly formed by an integrated die casting and connected to the tray frame. Without changing the outer envelope of the battery pack, the front beam of the battery tray is integrated into a die casting, which not only greatly reduces the number of parts and welding fixtures, but also reduces the amount of welding. Compared with the welding design, the integrated die casting can reduce the weight of the parts, thereby reducing the cost of the battery pack. At the same time, in order to further reduce the weight of the front beam of the battery tray, a weight reduction groove is set on the outer wall of the front beam body to reduce the use of materials and further reduce production costs.

[0045] As an exemplary embodiment of the present disclosure, refer to Figure 1 , Figure 2The front beam body 1 may include a bottom plate 11, two oppositely arranged side plates 12, and a side plate 13 connected between the two side plates 12. The two side plates 12 and a side plate 13 are respectively connected to the outer peripheral edges of the bottom plate 11, and together with the bottom plate 11, form a receiving cavity for accommodating electrical components. The connecting portion 2 may include two connecting portion monomers respectively connected to the two side plates 12. The side plate 13 is connected to one end of the side plate 12 away from the connecting portion monomer. The weight-reducing groove 101 is opened on the outer wall of the side plate 12 and the outer wall of the bottom plate 11, or the outer wall of one of the side plate 12 and the bottom plate 11, which can reduce the weight of the product. A reinforcing rib 102 is arranged in the weight-reducing groove 101 to increase the structural strength.

[0046] Further, refer to Figure 3 The outer wall of the side panel 12 may be provided with a weight-reducing groove 101. The distance L1 between the bottom wall of the weight-reducing groove 101 on the side panel 12 and the inner wall of the side panel 12 is 2mm-4mm, specifically 3mm, to ensure that the outer facade of the side panel 12 is at a safe distance of 2mm-4mm from the inner surface. When impacted, the reinforcing ribs will bear the impact without affecting the inner wall of the side panel 12, so as not to affect the sealing of the inner cavity. It should be noted that the side panel 12 is provided with a weight-reducing groove 101 with a side opening, and the bottom wall of the weight-reducing groove 101 is a surface on the weight-reducing groove 101 opposite to the opening; the inner wall of the side panel 12 refers to the wall surface of the side panel 12 used to enclose the accommodating cavity.

[0047] Further, refer to Figure 2 The outer wall of the bottom plate 11 may be provided with a weight-reducing groove 101. The distance L2 between the bottom wall of the weight-reducing groove 101 on the bottom plate 11 and the inner wall of the bottom plate 11 is 2mm-4mm, specifically 3mm. This setting is also to ensure a safe impact distance and prevent the inner wall of the bottom plate 11 from being damaged and affecting the sealing. It should be noted that the bottom plate 11 is provided with a weight-reducing groove 101 with an opening at the bottom. The bottom wall of the weight-reducing groove 101 is a surface on the weight-reducing groove 101 opposite to the opening; the inner wall of the bottom plate 11 refers to the wall surface of the bottom plate 11 used to enclose the accommodating cavity.

[0048] According to an exemplary embodiment of the present disclosure, Figure 6 The front beam of the battery tray may further include a connection portion 2 for connecting to the tray frame 10. Specifically, a avoidance hole 21 for the cold plate nozzle to pass through is formed on the connection portion 2. In an embodiment of the present disclosure, the connection portion 2 may be welded to the tray frame 10.

[0049] In some embodiments, reference Figure 1 , Figure 6The connecting part 2 is connected to the end of the side plate 12 away from the side plate 13, and the connecting part 2 vertically protrudes from the side plate 12. The outer wall of the side plate 12 is provided with a weight-reducing groove 101. The minimum distance between the side wall of the weight-reducing groove 101 close to the connecting part 2 and the side wall of the connecting part 2 facing the side plate 13 is greater than or equal to 30 mm, and can be specifically 20 mm, 25 mm, etc., so as to ensure the connection strength between the connecting part 2 and the front beam body 1. It should be noted that the minimum distance between the side wall of the weight-reducing groove 101 close to the connecting part 2 and the side wall of the connecting part 2 facing the side plate 13 is the distance between the two on the X-axis.

[0050] The front beam of the battery tray is die-casted by the moving fixed die assembly and the slider assembly. Specifically, the movement direction of the moving fixed die assembly and the slider assembly is directly designed according to the outer envelope of the front beam of the battery tray. Fig. 9 , Fig.10 In the direction of the arrow, the fixed mold 31 and the movable mold 32 move along the positive and negative directions of the Z axis, the first slider 41 and the third slider 43 move along the positive and negative directions of the X axis, and the second slider 42 and the fourth slider 44 move along the positive and negative directions of the Y axis. Figure 7 The X-axis direction is the front-to-back direction.

[0051] The front beam of the battery tray is formed by integral die casting. Due to the complex shape, the outer envelope and the molding surface are more restricted, especially the bottom surface of the part, that is, the surface formed by the fixed mold 31, cannot be changed. Figure 7-Figure 9 Since a certain draft angle is required during demolding, the side of the connection part 2 facing the side plate 13 cannot be directly molded along the Y-axis direction, otherwise the second slider 42 and the fourth slider 44 will interfere with the connection part 2 during demolding and cannot be demolded. In the embodiment of the present disclosure, the side wall of the connection part 2 facing the side plate 13 is molded on the movable mold 32, and the side wall of the weight reduction groove 101 on the side plate 12 close to the connection part 2 is directly molded on the fourth slider 44. The minimum distance between the A1 surface and the A2 surface in the X-axis direction is 30 mm to ensure the mold strength of the movable mold 32. The die casting molding in the above manner can save machining steps and save materials.

[0052] According to an exemplary embodiment of the present disclosure, Figure 1 In order to ensure the strength of the front beam body 1, a reinforcing rib 102 can be provided in the weight-reducing groove 101. When impacted, the reinforcing rib 102 bears the impact without damaging the inner wall of the front beam body 1, thereby ensuring the air tightness of the inner cavity of the front beam body 1.

[0053] In some embodiments, reference Figure 2 , Figure 3, the reinforcing ribs 102 may include a first reinforcing rib 1021 and a second reinforcing rib 1022 arranged to intersect, and at least one first reinforcing rib 1021 and at least one second reinforcing rib 1022 are arranged in the weight-reducing groove 101. The reinforcing ribs 102 extending in different directions are arranged in a staggered manner, and can withstand impacts in different directions. In an embodiment of the present disclosure, the first reinforcing rib 1021 and the second reinforcing rib 1022 are arranged perpendicular to each other; in other embodiments, the first reinforcing rib 1021 and the second reinforcing rib 1022 may also be arranged in an acute angle or an obtuse angle, and the present disclosure does not limit this.

[0054] Further, refer to Figure 2 , Figure 3 , a plurality of first reinforcing ribs 1021 arranged at intervals and / or a plurality of second reinforcing ribs 1022 arranged at intervals are arranged in the weight-reducing groove 101, and the distance between adjacent first reinforcing ribs 1021 and / or the distance between adjacent second reinforcing ribs 1022 is 40mm-60mm, specifically 50mm. In the embodiment of the present disclosure, the weight-reducing groove 101 provided on the side panel 12 includes a plurality of first reinforcing ribs 1021 arranged at intervals and a second reinforcing rib 1022; the weight-reducing groove 101 provided on the bottom plate 11 includes a plurality of first reinforcing ribs 1021 arranged at intervals and a second reinforcing rib 1022 arranged at intervals. Specifically, the distance between the reinforcing ribs 102 and the number of the reinforcing ribs 102 can be adjusted according to actual needs, all of which fall within the protection scope of the present disclosure.

[0055] In the embodiment of the present disclosure, the thickness of the reinforcing rib 102 may be 3 mm to 4 mm. The thickness of the reinforcing rib 102 may be selected according to actual strength requirements.

[0056] According to a second aspect of the present disclosure, referring to Figure 6 , a battery tray is also provided, the battery tray comprises a tray frame 10 and the above-mentioned battery tray front beam, the battery tray front beam can be welded to the tray frame 10. The tray frame 10 is used to accommodate the battery cells, and the battery tray front beam is used to accommodate the electrical components electrically connected to the battery cells. The battery tray has all the beneficial effects of the above-mentioned battery tray front beam, which will not be repeated here.

[0057] According to the third aspect of the present disclosure, a battery assembly is also provided, the battery assembly comprising the above-mentioned battery tray. Specifically, the battery assembly may include a battery module and a battery pack. The battery assembly has all the beneficial effects of the above-mentioned battery tray and the front beam of the battery tray, which will not be repeated here.

[0058] According to the fourth aspect of the present disclosure, there is also provided an electric device, which includes the above-mentioned battery assembly. Specifically, the electric device may include a vehicle, a spacecraft, an unmanned aerial vehicle, an electric two-wheeled vehicle, an electric multi-wheeled vehicle, an energy storage cabinet, etc. The electric device has all the beneficial effects of the above-mentioned battery assembly, battery tray, and battery tray front beam, which will not be repeated here.

[0059] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0060] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0061] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A front beam of a battery tray, used to connect to the front end of a tray frame, characterized in that: The front beam of the battery tray is an integrated die-casting part, and the front beam of the battery tray includes a front beam body for accommodating electrical components, and a weight-reducing groove is formed on the outer wall of the front beam body.

2. The front beam of the battery tray according to claim 1, characterized in that: The front beam body includes a bottom plate, two oppositely arranged side plates and a side plate connected between the two side plates. The two side plates and one side plate are respectively connected to the outer peripheral edges of the bottom plate and together with the bottom plate form a accommodating cavity for accommodating electrical components. The weight-reducing groove is opened on the outer wall of the side plate and / or the outer wall of the bottom plate.

3. The front beam of the battery tray according to claim 2, characterized in that: The outer wall of the side plate is provided with the weight-reducing groove, and the distance L1 between the bottom wall of the weight-reducing groove on the side plate and the inner wall of the side plate is 2 mm-4 mm.

4. The front beam of the battery tray according to claim 2, characterized in that: The outer wall of the bottom plate is provided with the weight-reducing groove, and the distance L2 between the bottom wall of the weight-reducing groove on the bottom plate and the inner wall of the bottom plate is 2 mm-4 mm.

5. The front beam of the battery tray according to claim 2, characterized in that: The battery tray front beam also includes a connection portion for connecting to the tray frame.

6. The front beam of the battery tray according to claim 5, characterized in that: The connecting portion is connected to an end of the side panel away from the edge panel, and the connecting portion protrudes vertically from the side panel. The outer wall of the side panel is provided with the weight reducing groove, and the minimum distance between the side wall of the weight reducing groove close to the connecting portion and the side wall of the connecting portion facing the side panel is greater than or equal to 30 mm.

7. The front beam of the battery tray according to claim 1, characterized in that: Reinforcing ribs are arranged in the weight-reducing grooves.

8. The front beam of the battery tray according to claim 7, characterized in that: The reinforcing ribs include first reinforcing ribs and second reinforcing ribs arranged to intersect each other, and at least one of the first reinforcing ribs and at least one of the second reinforcing ribs are arranged in the weight-reducing groove.

9. The front beam of the battery tray according to claim 8, characterized in that: A plurality of the first reinforcing ribs and / or a plurality of the second reinforcing ribs arranged at intervals are arranged in the weight-reducing groove, and the distance between adjacent first reinforcing ribs and / or the distance between adjacent second reinforcing ribs is 40 mm-60 mm.

10. The front beam of the battery tray according to claim 7, characterized in that: The thickness of the reinforcing rib is 3mm-4mm.

11. A battery tray, characterized in that: It comprises a tray frame and a battery tray front beam according to any one of claims 1 to 10, wherein the battery tray front beam is welded to the tray frame.

12. A battery assembly, characterized in that: Includes the battery tray as claimed in claim 11.

13. An electrical equipment, characterized in that: A battery assembly comprising the battery assembly of claim 12.

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