Integrated lifting lug structure for battery pack

Abstract

The utility model belongs to the technical field of electric automobiles, and particularly relates to an integrated lifting lug structure for a battery pack. Comprising a battery pack frame which is provided with a mounting plane extending horizontally; the lifting lug patch is fixedly arranged on the battery pack frame; the lifting lug main body is a hollow cylinder and is fixedly mounted on the lifting lug patch; the multiple supporting frames are evenly distributed between the lifting lug body and the lifting lug patch, and the two ends of each supporting frame are fixedly connected with the outer wall of the lifting lug body and the lifting lug patch correspondingly; the lifting sleeve is coaxially arranged at the top of the lifting lug body in a sleeving mode and fixedly connected with the lifting lug body, and the lifting lug body, the supporting frame and the lifting sleeve form an integrated force bearing structure through welding; and the overall rigidity of the battery pack is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric automobile technical field, especially relate to a integral ear structure for battery pack. BACKGROUND

[0002] With the development of new energy automobile is faster and faster, as its core component battery pack in the reliability performance demand is also higher and higher, and now due to the different vehicle structure leads to some battery pack hoisting point and frame distance is too long, this makes the rigidity of the battery pack is not enough and leads to the test failure more and more, therefore traditional ear structure has been difficult to meet the reliability requirement of battery pack.

[0003] Therefore, an integral ear structure for battery pack is needed to reduce the cost waste caused by test failure and shorten the project design cycle to a certain extent. UTILITY MODEL CONTENT

[0004] In view of the above problem, the utility model provides an integral ear structure for battery pack, comprising:

[0005] The battery pack frame has a horizontally extending mounting plane.

[0006] The ear patch is fixedly arranged on the battery pack frame.

[0007] The ear body is a hollow cylinder and is fixedly installed on the ear patch.

[0008] The support frame is evenly distributed between the ear body and the ear patch, and the two ends of each support frame are fixedly connected with the outer wall of the ear body and the ear patch.

[0009] The hoisting sleeve is coaxially sleeved on the top of the ear body and is fixedly connected with the ear body, and the ear body, the support frame and the hoisting sleeve are welded to form an integral bearing structure.

[0010] Further, a group of plug welding holes are evenly arranged on the ear patch; and one end of the ear body and the support frame is connected with the ear patch by welding.

[0011] Further, the side wall of the ear body is provided with an enclosing plate.

[0012] Further, the cross section of the support frame is L-shaped.

[0013] Further, the cross section of the support frame is triangular.

[0014] Further, the ear body is made of a cold-drawn steel pipe.

[0015] Further, the middle part of the support frame is provided with a longitudinal bump, and the height of the bump is one half to two thirds of the overall height of the support frame.

[0016] Further, the multiple rows of plug welding holes are uniformly distributed in a staggered manner.

[0017] Further, the sealing plate comprises a rectangle and a U-shaped plate.

[0018] Further, the triangular hypotenuse of the support frame is composed of multiple columnar strips.

[0019] Beneficial effects

[0020] The beneficial effects of the utility model relative to the prior art are as follows:

[0021] 1. The lifting lug structure is integrated, the weakness of insufficient overall rigidity of the battery pack due to the weak lifting lug is solved, the overall rigidity of the battery pack is greatly improved, the possibility of fracture of the connection between the battery pack frame and the lifting lug during vibration of the battery pack is reduced, and the integrated lifting lug structure has the advantages of low cost and easy assembly.

[0022] 2. The battery pack frame, the lifting lug patch and the integrated bearing structure are combined, so that the assembly, debugging, disassembly and storage work are facilitated.

[0023] 3. The support frame with two different structures is provided according to the difference in cantilever length of different lifting lug bodies, the cost requirement is reduced while the required structural strength is ensured, and corresponding measures are provided for different battery pack structures;

[0024] Other features and advantages of the utility model will be described in the subsequent description, and some of them will become apparent from the description, or will be understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structure indicated in the description and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0026] Figure 1 An overall axonometric view in the embodiment one of the utility model is shown.

[0027] Figure 2The overall axonometric view of the embodiment one of the utility model is shown.

[0028] Figure 3 The axonometric view of the lug body in the embodiment one of the utility model is shown.

[0029] Figure 4 The axonometric view of the support frame in the embodiment one of the utility model is shown.

[0030] Figure 5 The axonometric view of the lug body in the embodiment two of the utility model is shown.

[0031] Figure 6 The axonometric view of the support frame in the embodiment two of the utility model is shown.

[0032] Figure 7 The axonometric view of the sealing plate in the embodiment of the utility model is shown.

[0033] Figure 8 The axonometric view of the lug patch in the embodiment of the utility model is shown.

[0034] In the figure, 1, hoisting sleeve; 2, support frame; 3, lug body; 4, sealing plate; 5, lug patch; 6, battery package frame. DETAILED DESCRIPTION

[0035] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely explained in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are a part of the embodiments of the utility model, not all the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0036] Embodiment one:

[0037] The application provides a kind of integrated lug structure for battery pack, refer to Figure 1 And Figure 3 , comprising:

[0038] Battery package frame 6 has horizontally extended installation plane;

[0039] Lug patch 5, lug patch 5 is fixedly arranged on battery package frame 6;

[0040] Lug body 3 is hollow cylinder, is fixedly installed on lug patch 5;

[0041] Support frame 2, a plurality of support frames 2 are evenly distributed between the lug body 3 and the lug patch 5, and the two ends of each support frame 2 are fixedly connected with the outer wall of the lug body 3 and the lug patch 5 respectively;

[0042] Lifting sleeve 1, coaxially sleeved on the top of the lug body 3, and fixedly connected with the lug body 3, the lug body 3, the support frame 2 and the lifting sleeve 1 are welded to form an integrated force bearing structure;

[0043] A sleeve hole and a positioning hole are formed on the lug body 3, and then the lifting sleeve 1 and the positioning piece are connected to the lug body 3 by welding process; then the three support frames 2 are evenly distributed and welded on the lug body 3 to form an integrated structure; the lug patch 5 is fixed on the battery pack frame 6; then the integrated force bearing structure is fixed on the lug patch 5; the bolt loosening risk is eliminated through the integrated force bearing structure, and the maintenance frequency of the lug is reduced in the life cycle.

[0044] The application sets the lifting sleeve 1, the support frame 2 and the lug body 3 as an integrated lug structure, solves the weakness of insufficient overall rigidity of the battery pack due to weak lug, greatly improves the overall rigidity of the battery pack, and reduces the possibility of fracture of the connection between the battery pack frame 6 and the lug when the battery pack vibrates, while the integrated lug structure also has the advantages of low cost and easy assembly.

[0045] Reference Figure 1 and Figure 8 A group of plug welding holes are evenly arranged on the lug patch 5; the lug body 3 and one end of the support frame 2 are connected with the lug patch 5 through welding.

[0046] A 2mm×10mm plug welding hole is designed every 50mm in the middle of the lug patch 5; the plug welding hole realizes the rapid positioning of the lug patch 5 and the battery pack frame 6, and the uniform distribution of the plug welding hole makes the welding heat affected zone evenly distributed, and the assembly time can be greatly reduced.

[0047] Reference Figure 1 The side wall of the lug body 3 is provided with an enclosing plate 4.

[0048] The enclosing plate 4 is welded on the side wall of the lug body 3, and the enclosing plate 4 closes the hollow lug body 3, further improving the strength of the lug body 3.

[0049] Reference Figure 1 and Figure 4 The cross section of the support frame 2 is L-shaped.

[0050] According to the length of the lug cantilever, when the length of the lug cantilever is less than 100mm, the support frame 2 is designed as L-shaped to reduce the cost while ensuring the structural strength;

[0051] The lug body 3 is made of a cold-drawn steel pipe.

[0052] Compared with the traditional cast steel lug, the lug body 3 made of a cold-drawn steel pipe reduces the weight by nearly half; at the same time, the surface of the cold-drawn steel pipe is galvanized to improve the corrosion resistance of the lug body 3; at the same time, the flatness of the cold-drawn pipe type lug body 3 is good, which is convenient for welding after being combined with the lug patch 5, improves the flatness of welding, and the cost of cold-drawing process is lower, which can reduce the overall cost.

[0053] The middle part of the support frame 2 is provided with a longitudinal punching rib, and the height of the punching rib is one-half to two-thirds of the overall height of the support frame 2.

[0054] The punching rib and the support frame 2 are integrally formed by welding or extrusion, avoiding complex reinforcement schemes, reducing assembly nodes, and reducing processing difficulty and maintenance cost; while effectively strengthening the key stress area, avoiding material redundancy, and achieving a balance between structural strength and economy.

[0055] The plug weld holes are uniformly distributed in multiple rows.

[0056] Through the staggered distribution of the plug weld holes, the stress concentration is reduced after welding connection, further improving the strength of the connection.

[0057] Example two:

[0058] Compared with example one, reference Figure 2 and Figure 6 , wherein the cross section of the support frame 2 is triangular.

[0059] When the length of the lug cantilever is greater than 100mm, the support frame 2 is designed as a triangular support, further improving the support strength of the support frame 2; ensuring that the lug body 3 and the battery pack frame 6 will not fail due to insufficient rigidity during vibration.

[0060] Reference Figure 5 and Figure 7 , the sealing plate 4 includes a rectangle and a U-shaped plate.

[0061] The rectangular sealing plate 4 is welded to the rectangular side wall of the lug body 3 to strengthen the strength; the U-shaped sealing plate 4 is welded to the continuous U-shaped side wall of the lug body 3 to strengthen the strength of the lug body 3 with different shapes.

[0062] The triangular hypotenuse of the support frame 2 is composed of multiple columnar strips.

[0063] By composing the triangular hypotenuse of the support frame 2 with multiple columnar strips, the strength of the support frame 2 is improved, the weight of the support frame 2 is further reduced, and the cost is saved.

[0064] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features therein can be replaced equivalently; 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 utility model.

Claims

1. An integrated lug structure for a battery pack, comprising: The utility model relates to a kind of battery pack lifting lug, including: Battery package frame (6) with horizontal extension installation plane; Lug patch (5) is fixedly arranged on battery package frame (6); Lug body (3) is hollow cylinder, and is fixedly installed on lug patch (5); Support frame (2) is distributed between lug body (3) and lug patch (5), and the both ends of each support frame (2) are fixedly connected with the outer wall of lug body (3) and lug patch (5); Hoisting sleeve (1) is coaxially sleeved on the top of lug body (3), and is fixedly connected with lug body (3), and lug body (3), support frame (2) and hoisting sleeve (1) are welded to form integral force structure.

2. The integrated ear structure for a battery pack of claim 1, wherein, A group of plug welding holes are evenly arranged on the lug patch (5);Lug body (3) and support frame (2) are connected by welding between one end and lug patch (5).

3. The integrated ear structure for a battery pack of claim 1, wherein, The side wall of lug body (3) is provided with sealing plate (4).

4. The integrated ear structure for a battery pack of claim 3, wherein, The cross section of support frame (2) is L-shaped.

5. The integrated ear structure for a battery pack of claim 3, wherein, The cross section of support frame (2) is triangular.

6. The integrated ear structure for a battery pack of claim 3, wherein, Lug body (3) is made of cold-drawn steel pipe.

7. The integrated ear structure for a battery pack of claim 4, wherein, The middle part of support frame (2) is provided with longitudinal punching rib, and the height of punching rib is one half to two thirds of the overall height of support frame (2).

8. The integrated ear structure for a battery pack of claim 2, wherein, Multiple rows of plug welding holes are evenly distributed in staggered manner.

9. The integrated ear structure for a battery pack of claim 5, wherein, The sealing plate (4) includes rectangle and U-shaped.

10. The integrated ear structure for a battery pack of claim 5, wherein, The triangular hypotenuse of support frame (2) is composed of multiple column bars.

Images