An integrated bdu holder

Abstract

The utility model discloses an integrated BDU support, including support main part, support main part adopts SPCC integrated stamping, is equipped with hollow boss in the long side side edge of support main part, hollow boss is protruding to the outside of support main part and is surrounded with its inside bottom surface and forms the accommodation space C together. The utility model has the advantages of reducing the part cost, low die cost, moderate heat dissipation effect, moderate weight, hollow boss top surface on support main part and its opposite face can set up BMS host computer and slave respectively, achieves redundancy design, and sets up position and is convenient for BMS host computer and slave from the side wiring, and support main part is easy to integrate distribution electrical device, high and low voltage wiring.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, and in particular to an integrated BDU bracket. Background Technology

[0002] In existing battery packs, the integrated BDU brackets are all made of cast aluminum or plastic. Cast aluminum BDU brackets have high strength and high heat dissipation efficiency, but they have high mold costs, high component costs, and are heavy. Currently, they are only used in mid-to-high-end models. Plastic BDU brackets are lightweight, but they have high mold costs and poor heat dissipation.

[0003] The components on the BDU bracket are gradually moving towards integration, avoiding the use of multiple metal brackets and realizing "one bracket to install both BMS and BDU", reducing weight and saving space. The BDU bracket itself and the internal components of the BDU (such as relays, fuses, etc.) are still mostly modularly assembled and have not been completely merged into a non-detachable whole. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is that as BDU brackets become increasingly integrated, a structure is needed to accommodate the installation of internal components on the BDU bracket.

[0005] The above-mentioned technical problems are solved by the following technical solution: This utility model proposes an integrated BDU bracket, which includes a bracket body. The bracket body is integrally stamped by SPCC. A hollow boss is provided on the long side edge of the bracket body. The hollow boss protrudes outward from the bracket body and together with its inner bottom surface forms an accommodating space C.

[0006] In a preferred embodiment of the integrated BDU bracket of this utility model: the hollow boss is divided into a first area and a second area along its length by a stamped groove, the bottom surface of the stamped groove is lower than the top surface of the first area and the second area and higher than the inner bottom surface of the bracket body.

[0007] In a preferred embodiment of the integrated BDU bracket of this utility model: the top surface of the first area is a flat surface A, the top surface of the second area is a flat surface B, and the flat surface A and the flat surface B are flush.

[0008] In a preferred embodiment of the integrated BDU bracket of this utility model: the height of the first flat surface A and the second flat surface B from the inner bottom surface of the bracket body is H.

[0009] In a preferred embodiment of the integrated BDU bracket of this utility model: at least one M3 press-fit nut post is fixed on the flat surface A and flat surface B of the first and second regions respectively.

[0010] In a preferred embodiment of the integrated BDU bracket of this utility model: the outer edge of the second zone is provided with a downwardly folded flange to increase structural rigidity and eliminate sharp edges.

[0011] In a preferred embodiment of the integrated BDU bracket of this utility model: the outer edges of the bracket body are provided with continuous flanges, and the continuous flanges are perpendicular to the inner bottom surface of the bracket body.

[0012] In a preferred embodiment of the integrated BDU bracket of this utility model: the bracket body is further provided with M5 spot-welded bolts and M4 spot-welded nuts.

[0013] In a preferred embodiment of the integrated BDU bracket of this utility model: a main positive relay and a fast charging relay are respectively provided on the left and right sides of the bracket body.

[0014] In a preferred embodiment of the integrated BDU bracket of this utility model: a smoke sensor, a pre-charge resistor, and a predictive relay are sequentially arranged on the bracket body and in front of the hollow boss.

[0015] The beneficial effects of this utility model are as follows: This design reduces the cost of parts, has low mold opening costs, moderate heat dissipation effect, moderate weight, and the hollow boss on the main body of the bracket can be used to set the BMS master and slave respectively on the top surface and the opposite side, achieving a redundant design. The setting position is convenient for the BMS master and slave to be wired from the side, and the main body of the bracket is easy to integrate distributed electrical components and high and low voltage wiring. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments of this utility model will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this utility model and are not intended to limit the scope of this utility model. Wherein:

[0017] Figure 1 A structural diagram of an integrated BDU support is shown.

[0018] Figure 2 An assembly diagram of an integrated BDU bracket is shown. Detailed Implementation

[0019] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0021] Reference Figure 1 This embodiment provides an integrated BDU bracket, including a bracket body 1. The bracket body 1 is integrally stamped using SPCC, which improves the overall rigidity. SPCC is the name of "general-purpose cold-rolled carbon steel sheet and strip" in Japanese standard (JIS). Integrating this material into the bracket body has the advantages of low part cost, low mold opening cost, moderate heat dissipation effect, and moderate weight. A hollow boss 2 is provided on the long side edge of the bracket body 1. The hollow boss 2 forms an "outward-folding box" structure, with the long side becoming a natural reinforcing rib. The hollow boss 2 protrudes outward from the bracket body 1 and together with its inner bottom surface, it forms an accommodating space C. The top side of the hollow boss 2 and the accommodating space C are used to install the BMS master and slave, forming a redundant design. The installation position of the BMS master and slave, that is, the setting position of the hollow boss 2, is located on the long side edge, which facilitates the wiring of the BMS master and slave.

[0022] Reference Figure 1 As an optional embodiment, the hollow boss 2 is divided into a first region 21 and a second region 22 along its length by a stamped groove 23. The bottom surface of the stamped groove 23 is lower than the top surface of the first region 21 and the second region 22 and higher than the inner bottom surface of the bracket body 1. The stamped groove 23 is used to improve the bending strength in the Y direction, and different relay combinations can be covered by only changing the length of the hollow boss 2, thus saving costs.

[0023] Furthermore, the top surface of the first zone 21 is flat surface A, and the top surface of the second zone 22 is flat surface B. Flat surface A and flat surface B are flush, which facilitates the BMS host configuration.

[0024] Furthermore, the distance between the flat surface A of the first zone 21 and the flat surface B of the second zone 22 and the inner bottom surface of the bracket body 1 is H. The height H is also the height of the accommodating space C. The height H must be greater than the height of the BMS slave device. The BMS slave device is installed in the accommodating space C.

[0025] Preferably, at least one M3 press-fit nut post 24 is fixed on the flat surface A and flat surface B of the first zone 21 and the second zone 22 respectively. The nut post design saves space in the Z direction, completes the threading and positioning, reduces the number of parts, and facilitates the integration of the BDU bracket.

[0026] Reference Figure 1 As an optional embodiment, the outer edge of the second zone 22 is provided with a downward folded flange 221 to increase structural rigidity and eliminate sharp edges. The BMS host and slave wiring are close to the flange 221 to avoid scratches when operators plug and unplug the wires.

[0027] Reference Figure 1 As an optional embodiment, the outer edges of the bracket body 1 are provided with continuous flanges 11. The continuous flanges 11 are perpendicular to the inner bottom surface of the bracket body 1. The continuous flanges 11 are cut at the same time as the bracket body 1, eliminating the need for secondary bending or welding, increasing rigidity and avoiding scratches.

[0028] Reference Figures 1-2 As an optional embodiment, the bracket body 1 is also provided with M5 spot welding bolts 12 and M4 spot welding nuts 13, which is a low-cost solution for integrated BDU to realize high voltage, high current and signal integrated wiring.

[0029] Preferably, a main positive relay and a fast charging relay are respectively arranged on the left and right sides of the bracket body 1. The main positive and fast charging relays are arranged on the left and right sides, and the electromagnetic fields cancel each other out. The contacts of the main positive relay and the fast charging relay → copper busbar → bracket body (SPCC thermal conductivity 50W / m·K) → continuous flange 11 → shell form a forced convection channel.

[0030] Preferably, a smoke sensor, a pre-charge resistor, and a predictive relay are sequentially arranged on the main body 1 and in front of the hollow boss 2. The smoke sensor is located at the very front of all high-voltage components. The relay coil pin is directly welded to the M4 spot-welded nut 13 pre-set on the main body 1. The copper busbars at both ends of the pre-charge resistor are locked with M5 spot-welded bolts 12. The above arrangement area on the main body 1 is conducive to the integration of the BDU bracket.

[0031] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. An integrated BDU stent, characterized in that: include, The bracket body (1) is formed by SPCC integral stamping. A hollow boss (2) is provided on the long side edge of the bracket body (1). The hollow boss (2) protrudes outward from the bracket body (1) and together with its inner bottom surface, forms an accommodating space C.

2. The integrated BDU support according to claim 1, characterized in that: The hollow boss (2) is divided into a first region (21) and a second region (22) along its length by a stamping groove (23). The bottom surface of the stamping groove (23) is lower than the top surface of the first region (21) and the second region (22) and higher than the inner bottom surface of the support body (1).

3. The integrated BDU support according to claim 2, characterized in that: The top surface of the first area (21) is a flat surface A, and the top surface of the second area (22) is a flat surface B. The flat surface A and the flat surface B are flush.

4. The integrated BDU support according to claim 3, characterized in that: The distance between the flat surface A of the first zone (21) and the flat surface B of the second zone (22) and the inner bottom surface of the support body (1) is H.

5. The integrated BDU support according to claim 2, characterized in that: At least one M3 press-fit nut post (24) is fixed on the flat surface A and flat surface B of the first region (21) and the second region (22).

6. The integrated BDU support according to claim 2, characterized in that: The outer edge of the second zone (22) is provided with a downward folded flange (221) to increase structural rigidity and eliminate sharp edges.

7. The integrated BDU support according to claim 1, characterized in that: The outer edges of the support body (1) are provided with continuous flanges (11), and the continuous flanges (11) are perpendicular to the inner bottom surface of the support body (1).

8. The integrated BDU support according to claim 7, characterized in that: The support body (1) is also provided with M5 spot weld bolts (12) and M4 spot weld nuts (13).

9. The integrated BDU support according to claim 1, characterized in that: The main positive relay and fast charging relay are respectively installed on the left and right sides of the bracket body (1).

10. The integrated BDU support according to claim 9, characterized in that: A smoke sensor, a pre-charge resistor, and a prediction relay are sequentially arranged on the main body (1) of the bracket and in front of the hollow boss (2).

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