Hanging bracket for lower box body of battery pack

Abstract

The utility model provides a mounting bracket for a lower box body of a battery pack. The mounting bracket comprises a supporting part and a side connecting part, the supporting part comprises a supporting body and a protruding part, the supporting body is provided with a first connecting face used for being welded to the bottom face of the lower box body, and the protruding part is formed in the mode that the supporting body protrudes from the first connecting face to the opposite side of the supporting body. One end of the side connecting part is perpendicularly connected with the supporting body and extends in the direction away from the protruding part, the side connecting part is provided with a second connecting face used for being welded to the side face of the lower box body, and the second connecting face faces the first connecting face. The supporting body protrudes from the first connecting surface to the opposite side direction to form the protruding part, so that the gap between the protruding part and the bottom contact surface of the lower box body is larger, electrophoretic paint can be smoothly adsorbed in the interlayer gap between the protruding part and the bottom contact surface of the lower box body in the electrophoresis process, and the rusting phenomenon of the lower box body and the mounting bracket is greatly reduced; the service life of the mounting support is prolonged, and meanwhile the protruding part can improve the strength of the mounting support.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a battery pack lower box mounting support. BACKGROUND

[0002] At present, mounting support is commonly formed through sheet metal bending mode, mounting support is connected with battery pack lower box through welding mode, mounting support and battery pack lower box are fixed and will be integrally sprayed insulating conductive paint through electrophoresis mode.

[0003] The bottom surface of the existing mounting support is flat, the bottom surface of the mounting support and the bottom surface of the box cannot be completely attached, the electrophoretic paint cannot completely cover the interlayer gap between the mounting support and the bottom surface of the box during the electrophoresis process, resulting in serious rusting phenomenon of the contact surface of the mounting support and the box, reducing the service life of the mounting support, and the structural strength of the mounting support with the flat bottom surface is also weak. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a battery pack lower box mounting support to solve the technical problem that the bottom surface is flat, the bottom surface of the mounting support and the bottom surface of the box cannot be completely attached, resulting in serious rusting phenomenon of the contact surface of the mounting support and the box, reducing the service life of the mounting support, and the structural strength is also weak.

[0005] The technical scheme of the utility model is realized as follows:

[0006] The utility model provides a battery pack lower box mounting support, which comprises a supporting part and a side connecting part, wherein:

[0007] The supporting part comprises a supporting body and a protruding part, a first connecting surface for welding with the bottom surface of the lower box is arranged on the supporting body, and the protruding part is formed by protruding from the first connecting surface to the opposite side of the supporting body;

[0008] One end of the side connecting part is connected perpendicularly with the supporting body and extends away from the protruding part, a second connecting surface for welding with the side surface of the lower box is arranged on the side connecting part, and the second connecting surface faces the first connecting surface.

[0009] On the basis of the above technical scheme, preferably, a liquid leakage hole is arranged on the protruding part.

[0010] On the basis of the above technical scheme, preferably, the liquid leakage hole is a tapered hole, and the diameter of the liquid leakage hole gradually decreases from one side of the protruding part close to the first connecting surface.

[0011] On the basis of the above technical scheme, preferably, the tapering slope of the liquid leakage hole is 60 degrees.

[0012] Based on the above technical solutions, preferably, the support body includes a first support plate and a second support plate, and the protrusion is located between the first support plate and the second support plate; the side connection includes a first connecting ear and a second connecting ear, the first connecting ear is connected to the first support plate, and the second connecting ear is connected to the second support plate.

[0013] Based on the above technical solutions, preferably, the width of the first connecting ear is less than or equal to the width of the first support plate, and the width of the second connecting ear is less than or equal to the width of the second support plate.

[0014] Based on the above technical solutions, preferably, the first connecting ear and the second connecting ear are symmetrically arranged about the center line of the protrusion.

[0015] Based on the above technical solutions, preferably, the first support plate and the second support plate are symmetrically arranged about the center line of the protrusion, and the sum of the widths of the first support plate and the second support plate is less than or equal to the width of the protrusion.

[0016] Based on the above technical solutions, preferably, the connection position between the first support plate and the protrusion is provided with a first transition fillet, and the connection position between the second support plate and the protrusion is provided with a second transition fillet.

[0017] Based on the above technical solutions, preferably, the protrusion is formed by stamping, and the side connection and the support are formed by bending.

[0018] The battery pack lower housing mounting bracket of this utility model has the following advantages over the prior art:

[0019] (1) The support body protrudes from the first connecting surface to the opposite side to form a protrusion, which makes the gap between the protrusion and the bottom of the lower box larger. During the electrophoresis process, the electrophoretic paint can be successfully adsorbed in the interlayer gap between the protrusion and the bottom of the lower box, which improves the salt spray and weather resistance of the lower box, greatly reduces the corrosion of the lower box and the mounting bracket, and improves the service life of the mounting bracket. At the same time, the protrusion can improve the strength of the mounting bracket.

[0020] (2) The protrusion is provided with a leakage hole, which allows the water stains and moisture accumulated in the gap between the protrusion and the bottom of the lower box to be discharged as soon as possible, avoiding the rust and corrosion of the lower box caused by water droplets soaking the area not electrophoretically reached for a long time, thus improving reliability and lifespan.

[0021] (3) The leakage hole is a conical hole, and the diameter of the leakage hole gradually decreases from the side of the protrusion near the first connecting surface. It has a guiding effect and can drain water stains and water vapor as completely as possible, avoiding water vapor after water evaporation causing corrosion of the lower box and improving reliability.

[0022] (4) By ensuring that the sum of the widths of the first support plate and the second support plate is less than or equal to the width of the protrusion, the width of the protrusion is made as large as possible while ensuring strength, so that the area where the electrophoretic paint can be successfully adsorbed is as large as possible, thereby reducing the possibility of corrosion of the lower box and improving reliability. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Fig. 1 This is a schematic diagram of the structure of the battery pack lower housing mounting bracket of this utility model;

[0025] Fig. 2 This is a schematic diagram of the structure connecting the first connecting surface and the lower housing of this utility model;

[0026] Fig. 3 This is a schematic diagram of the connection between the second connecting surface and the lower housing of this utility model.

[0027] Explanation of reference numerals in the attached drawings: 1-Support part, 2-Side connection part;

[0028] 00 - Lower housing, 100 - First connecting surface, 200 - Second connecting surface;

[0029] 11-Support body, 111-First support plate, 112-Second support plate, 12-Protrusion, 121-Leakage hole, 13-First transition fillet, 14-Second transition fillet;

[0030] 21-First connecting ear, 22-Second connecting ear. Detailed Implementation

[0031] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0032] Reference Figs. 1-3 As shown in the embodiment of this utility model, a battery pack lower housing mounting bracket is proposed, including a support part 1 and a side connection part 2, wherein:

[0033] The support part 1 includes a support body 11 and a protrusion 12. The support body 11 is provided with a first connecting surface 100 for welding to the bottom surface of the lower housing 00. The protrusion 12 is formed by the support body 11 protruding from the first connecting surface 100 to the opposite side. The protrusion 12 is located in the middle of the support body 11, and the length of the protrusion 12 is the same as the length of the support body 11. The first connecting surface 100 contacts the bottom surface of the lower housing 00, and a gap is formed between the protrusion 12 and the bottom surface of the lower housing 00.

[0034] One end of the side connection 2 is perpendicularly connected to the support body 11 and extends away from the protrusion 12. The side connection 2 is provided with a second connection surface 200 for welding to the side of the lower housing 00. The second connection surface 200 faces the first connection surface 100.

[0035] The battery pack lower housing mounting bracket proposed in this embodiment has a protrusion 12 formed by the support body 11 protruding from the first connecting surface 100 to the opposite side. This makes the gap between the protrusion 12 and the bottom contact surface of the lower housing 00 larger. During the electrophoresis process, the electrophoretic paint can be smoothly adsorbed into the interlayer gap between the protrusion 12 and the bottom contact surface of the lower housing 00, which improves the salt spray and weather resistance of the lower housing 00, greatly reduces the corrosion of the lower housing 00 and the mounting bracket, and improves the service life of the mounting bracket. At the same time, the protrusion 12 can improve the strength of the mounting bracket.

[0036] In some embodiments, the protrusion 12 is provided with a drain hole 121. By providing a drain hole 121 on the protrusion 12, water stains and moisture accumulated in the gap between the protrusion 12 and the bottom of the lower housing 00 can be discharged as soon as possible, avoiding the lower housing 00 from rusting and corrosion caused by water droplets soaking the area not reached by electrophoresis for a long time, thereby improving reliability and lifespan.

[0037] In some embodiments, the drain hole 121 is a tapered hole, and the diameter of the drain hole 121 gradually decreases from the side of the protrusion 12 closest to the first connecting surface 100. This design allows the drain hole 121 to have a guiding function, enabling water stains and moisture to be discharged as completely as possible, preventing water vapor from evaporating and causing corrosion of the lower housing 00, thus improving reliability.

[0038] In some embodiments, the taper slope of the drain hole 121 is 60 degrees. With a taper slope of 60 degrees, the drain hole 121 leaks the fastest, allowing water stains and moisture to be discharged more quickly. This further prevents water droplets from prolonged immersion in areas not reached by electrophoresis, which could lead to rust and corrosion of the lower housing.

[0039] In some embodiments, the support body 11 includes a first support plate 111 and a second support plate 112, and the protrusion 12 is located between the first support plate 111 and the second support plate 112; the side connection portion 2 includes a first connecting ear 21 and a second connecting ear 22, the first connecting ear 21 being connected to the first support plate 111, and the second connecting ear 22 being connected to the second support plate 112.

[0040] In some embodiments, the width of the first connecting ear 21 is less than or equal to the width of the first support plate 111, and the width of the second connecting ear 22 is less than or equal to the width of the second support plate 112. By making the width of the first connecting ear 21 less than or equal to the width of the first support plate 111, and the width of the second connecting ear 22 less than or equal to the width of the second support plate 112, it is more convenient to perform the stamping operation of the protrusion 12, improving processing convenience.

[0041] In some embodiments, the first connecting ear 21 and the second connecting ear 22 are symmetrically arranged about the center line of the protrusion 12. This symmetrical arrangement of the first connecting ear 21 and the second connecting ear 22 about the center line of the protrusion 12 ensures that the side of the mounting bracket experiences more even stress after welding with the lower housing 00, preventing damage from excessive local stress and improving the stability and reliability of the device.

[0042] In some embodiments, the first support plate 111 and the second support plate 112 are symmetrically arranged about the center line of the protrusion 12, and the sum of the widths of the first support plate 111 and the second support plate 112 is less than or equal to the width of the protrusion 12. By ensuring that the sum of the widths of the first support plate 111 and the second support plate 112 is less than or equal to the width of the protrusion 12, the width of the protrusion 12 is made as large as possible while ensuring strength, thereby maximizing the area where electrophoretic paint can be smoothly adsorbed, thus reducing the possibility of corrosion of the lower housing and improving reliability.

[0043] In some embodiments, a first transition fillet 13 is provided at the connection position between the first support plate 111 and the protrusion 12, and a second transition fillet 14 is provided at the connection position between the second support plate 112 and the protrusion 12. By providing the first transition fillet 13 and the second transition fillet 14, stress concentration at the connection position is avoided, thereby improving the bending resistance of the device and increasing its strength and reliability.

[0044] In some embodiments, the protrusion 12 is formed by stamping, and the side connection 2 and the support 1 are formed by bending. By forming the protrusion 12 by stamping and the side connection 2 and the support 1 by bending, the mounting bracket is integrally formed, resulting in better structural strength, thereby improving reliability and extending service life.

[0045] The working principle of the battery pack lower housing mounting bracket is as follows: the first connecting surface 100 is welded to the bottom surface of the lower housing 00, and the second connecting surface 200 is welded to the side surface of the lower housing 00. A gap is formed between the protrusion 12 and the bottom surface of the lower housing 00. During the electrophoresis process, the electrophoretic paint can be successfully adsorbed into the gap between the protrusion 12 and the bottom contact surface of the lower housing 00, which improves the salt spray and weather resistance of the lower housing 00, greatly reduces the time for the lower housing 00 and the mounting bracket to rust, and improves the life of the mounting bracket. At the same time, the protrusion 12 can improve the strength of the mounting bracket.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery pack lower housing mounting bracket, characterized in that, It includes a support part (1) and a side connection part (2), wherein: The support part (1) includes a support body (11) and a protrusion (12). The support body (11) is provided with a first connecting surface (100) for welding to the bottom surface of the lower box (00). The protrusion (12) is formed by the support body (11) protruding from the first connecting surface (100) to the opposite side. One end of the side connection part (2) is perpendicularly connected to the support body (11) and extends away from the protrusion (12). The side connection part (2) is provided with a second connection surface (200) for welding to the side of the lower box (00). The second connection surface (200) faces the first connection surface (100).

2. The battery pack lower housing mounting bracket as described in claim 1, characterized in that, The protrusion (12) is provided with a leakage hole (121).

3. The battery pack lower housing mounting bracket as described in claim 2, characterized in that, The leakage hole (121) is a conical hole, and the diameter of the leakage hole (121) gradually decreases from the side of the protrusion (12) close to the first connecting surface (100).

4. The battery pack lower housing mounting bracket as described in claim 3, characterized in that, The tapered slope of the leakage hole (121) is 60 degrees.

5. The battery pack lower housing mounting bracket as described in claim 1, characterized in that, The support body (11) includes a first support plate (111) and a second support plate (112), and the protrusion (12) is located between the first support plate (111) and the second support plate (112); the side connection part (2) includes a first connecting ear (21) and a second connecting ear (22), the first connecting ear (21) is connected to the first support plate (111), and the second connecting ear (22) is connected to the second support plate (112).

6. The battery pack lower housing mounting bracket as described in claim 5, characterized in that, The width of the first connecting ear (21) is less than or equal to the width of the first support plate (111), and the width of the second connecting ear (22) is less than or equal to the width of the second support plate (112).

7. The battery pack lower housing mounting bracket as described in claim 6, characterized in that, The first connecting ear (21) and the second connecting ear (22) are symmetrically arranged about the center line of the protrusion (12).

8. The battery pack lower housing mounting bracket as described in claim 5, characterized in that, The first support plate (111) and the second support plate (112) are symmetrically arranged about the center line of the protrusion (12), and the sum of the widths of the first support plate (111) and the second support plate (112) is less than or equal to the width of the protrusion (12).

9. The battery pack lower housing mounting bracket as described in claim 5, characterized in that, The first support plate (111) is provided with a first transition fillet (13) at the connection position with the protrusion (12), and the second support plate (112) is provided with a second transition fillet (14) at the connection position with the protrusion (12).

10. The battery pack lower housing mounting bracket as described in any one of claims 1-9, characterized in that, The protrusion (12) is formed by stamping, and the side connection (2) and the support (1) are formed by bending.

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