Integrated BDU device

Abstract

The utility model discloses an integrated BDU device, which comprises a shell formed by buckling an upper shell and a lower shell, a PCB is clamped on the lower shell, at least one group of current-carrying busbars, a low-voltage control plug-in and a high-voltage sampling plug-in are integrated on the PCB, the edge of the PCB is provided with a group of connecting end parts, and the connecting end parts are connected with the upper shell and the lower shell. A connecting hole is formed in each connecting end part; the upper shell is arranged on the PCB in a covering mode, the upper shell is provided with a group of checking parts used for containing the connecting end parts, and the checking parts are provided with cover bodies capable of being opened. According to the utility model, the current-carrying busbar, the low-voltage control plug-in and the high-voltage sampling plug-in are integrated on the PCB to respectively replace a traditional load over-current circuit, a high-voltage sampling circuit and a low-voltage control circuit loop, so that the types and the number of parts are reduced, the equipment working procedures are reduced, the installation and the automatic production are convenient, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an integrated BDU device. Background Art

[0002] The Battery Energy Distribution Unit (BDU), or Battery Disconnect Unit, is a special distribution box for electric vehicle power batteries. It can provide pre-charging, super charging, discharge control, circuit overload and short-circuit protection, high-voltage sampling, low-voltage control and other functions for the high-voltage system of new energy vehicles, and protect and monitor the operation of the high-voltage system.

[0003] In the traditional BDU technical solution, for example, as disclosed in the Chinese patent CN205429106U applied by the applicant in 2016, the high voltage is connected by copper busbars, and the low voltage acquisition and control are connected by wire harnesses. The copper busbars and wire harnesses occupy a lot of space inside the BDU, which is not conducive to the centralized arrangement of the internal components of the BDU, has high costs, and is prone to contact wear failure, loose fixation, etc. At the same time, these components are all built into the BDU shell, and the connection between them and the terminals is cumbersome and easy to be connected incorrectly or installed in place, but these cannot be detected whether they are installed in place, which causes great inconvenience to assembly. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an integrated BDU device.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] The integrated BDU device comprises a shell formed by an upper shell and a lower shell buckled together, wherein a PCB board is fixed on the lower shell, and at least a group of current-carrying busbars, a low-voltage control plug-in and a high-voltage sampling plug-in are integrated on the PCB board, and the edge of the PCB board has a group of connection ends, and each of the connection ends is provided with a connection hole; the upper shell cover is arranged on the PCB board, and a group of inspection parts for accommodating the connection ends are opened on the upper shell, and the inspection parts have an openable cover.

[0007] Preferably, the upper shell has a group of recesses, the connecting end is located in the recesses, the cover is detachably covered on the recesses, and the cover and the recesses constitute the inspection part.

[0008] Preferably, at least one connecting end portion is disposed in one of the inspection portions.

[0009] Preferably, hooks are provided on both sides of the cover body, and bayonet holes are provided on both sides of the inner wall of the recess, and the hooks extend into the bayonet holes and engage with them, so that the cover body is covered on the recess.

[0010] Preferably, the top of the hook protrudes from the surface of the upper shell.

[0011] Preferably, the first side of the recess is pivotally connected to the first side of the cover body, and the second side of the cover body is provided with an elastic claw, which abuts against the second side of the recess, so that the cover body is covered on the recess.

[0012] Preferably, the second side of the recess has a step surface, the elastic claw is V-shaped, and the top of the front side wall thereof has a clamping table surface matched with the step surface.

[0013] Preferably, the center of the step surface has a notch, and the middle portion of the front side wall of the elastic claw has a protrusion, and when the engaging table abuts against the step surface, the protrusion is inserted into the notch.

[0014] Preferably, a group of reinforcing ribs arranged at intervals are provided on the inner wall between the front side wall and the rear side wall of the elastic claw.

[0015] Preferably, the port of the lower shell is evenly distributed with a group of snap-in blocks along its edge, and the edge of the port of the upper shell has a group of snaps opposite to the snap-in blocks, and the snaps are connected to the snap-in blocks so that the upper shell and the lower shell are snapped together.

[0016] The beneficial effects of the utility model are mainly reflected in:

[0017] 1. The current-carrying busbar, low-voltage control plug-in and high-voltage sampling plug-in are integrated on the PCB board, which replace the traditional load overcurrent circuit, high-voltage sampling circuit and low-voltage control circuit loop respectively, reducing the types and quantity of parts and equipment processes, facilitating installation and automated production, and improving production efficiency;

[0018] 2. An inspection part is set on the upper shell, and the connection end is set in the inspection part, so as to detect whether the connection end and the terminal are properly connected and installed, whether the connection is wrong, etc. through the openable cover, which is convenient and fast and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0020] Figure 1 : An exploded schematic diagram of an embodiment of the utility model;

[0021] Figure 2 : A partial exploded schematic diagram of an embodiment of the utility model;

[0022] Figure 3 : A partial structural diagram of an embodiment of the utility model;

[0023] Figure 4 : A cross-sectional view of an embodiment of the utility model;

[0024] Figure 5 : A schematic diagram of the elastic claw in the embodiment of the utility model. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0026] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0027] like Figures 1 to 5 As shown, the utility model discloses an integrated BDU device, including a shell formed by an upper shell 1 and a lower shell 2, wherein a PCB board 3 is clamped on the lower shell 2, and at least a group of current-carrying busbars 4, a low-voltage control plug-in 5 and a high-voltage sampling plug-in 6 are integrated on the PCB board 3, and the edge of the PCB board 3 has a group of connection ends 301, and each of the connection ends 301 is provided with a connection hole 302; the upper shell 2 is covered on the PCB board 3, and a group of inspection parts for accommodating the connection ends 301 are opened on the upper shell 1, and the inspection part has an openable cover 7.

[0028] The port of the lower shell 2 is evenly distributed with a group of snap-fit ​​blocks 201 along its edge, and the port edge of the upper shell 1 has a group of snaps 105 opposite to the snap-fit ​​blocks 201, and the snaps 105 are connected to the snap-fit ​​blocks 201 so that the upper shell 1 and the lower shell 2 are snapped together.

[0029] Other necessary components are also provided on the PCB board 3. The inner walls of the upper shell 1 and the lower shell 2 are respectively in contact with the PCB board 3 to ensure the stability of the PCB board 3. The lower shell 2 is convenient to match the edge of the PCB board 3, so that the PCB board 3 is completely embedded in the lower shell 2.

[0030] The utility model integrates a current-carrying busbar 4, a low-voltage control plug-in 5 and a high-voltage sampling plug-in 6 on a PCB board 3, which respectively replace the traditional load overcurrent circuit, high-voltage sampling circuit, and low-voltage control circuit loop, reduce the types and quantity of parts inside the shell, reduce equipment processes, facilitate installation and automated production, and improve production efficiency.

[0031] Specific as Figure 1 and Figure 2 As shown, the upper housing 1 has a group of recesses 101, the connection end 301 is located in the recess 101, the cover 7 is detachably covered on the recess 101, and the cover 7 and the recess 101 constitute the inspection part. The connection end 301 is arranged in the inspection part to detect whether the connection end 301 and the terminal (not shown in the figure) are connected and installed in place, whether the connection is wrong, etc. through the openable cover 7, which is convenient and fast and convenient for practical use.

[0032] At least one connecting end portion 301 is disposed in one of the inspection portions. In a feasible embodiment, two or more connecting end portions 301 may be accommodated in one of the inspection portions.

[0033] The inspection part has a variety of connection modes, among which two embodiments are preferred: Figure 1 , Figure 2 and Figure 4 A first embodiment of the inspection part is shown. In the first embodiment of the inspection part, hooks 701 are provided on both sides of the cover body 7, and bayonet holes 102 are provided on both sides of the inner wall of the recess 101. The hooks 701 extend into the bayonet holes 102 and engage with them, so that the cover body 7 is covered on the recess 101.

[0034] In order to facilitate opening of the cover 7 , the top of the hook 701 protrudes from the surface of the upper housing 1 , so as to facilitate hand-held extraction. In the first embodiment, the cover 7 can be completely separated from the recess 101 .

[0035] Figure 1 , Figure 2 and Figure 4 , Figure 5This is a second embodiment of the inspection part. In the second embodiment of the inspection part, the first side of the recess 101 is pivotally connected to the first side of the cover 7, and the second side of the cover 7 is provided with an elastic claw 702, and the elastic claw 702 abuts against the second side of the recess 101, so that the cover 7 is covered on the recess 101. In the second embodiment, the cover 7 is partially separated from the recess 101.

[0036] Specifically, the second side of the recess 101 has a step surface 103, the elastic claw 702 is V-shaped, and the top of the front side wall thereof has a clamping table surface 7021 adapted to the step surface 103. The step surface 103 is lower than the top surface of the upper shell 1, and after the clamping table surface 7021 abuts against the step surface 103, the surface of the clamping table surface 7021 does not protrude from the surface of the upper shell 1.

[0037] Furthermore, the center of the step surface 103 has a notch 104, and the middle part of the front side wall of the elastic claw 702 has a protrusion 7022, and when the clamping table 7021 abuts against the step surface 103, the protrusion 7022 is clamped into the notch 104. The protrusion 7022 is clamped with the notch 104 to prevent the clamping table 7021 from separating from the step surface 103.

[0038] A group of reinforcing ribs 7023 are arranged at intervals on the inner wall between the front side wall and the rear side wall of the elastic claw 702 to enhance the elasticity of the elastic claw 702 .

[0039] In the second embodiment of the detection portion, it is preferably adapted to accommodate more than one connection end 301 .

[0040] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0041] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. Integrated BDU device, characterized by: The invention comprises a housing formed by buckling an upper housing (1) and a lower housing (2), wherein a PCB board (3) is mounted on the lower housing (2), and at least a group of current-carrying busbars (4), a low-voltage control plug-in (5) and a high-voltage sampling plug-in (6) are integrated on the PCB board (3), and the edge of the PCB board (3) has a group of connection ends (301), and each of the connection ends (301) is provided with a connection hole (302); the upper housing (1) is covered on the PCB board (3), and a group of inspection parts for accommodating the connection ends (301) are opened on the upper housing (1), and the inspection parts have an openable cover (7).

2. The integrated BDU device according to claim 1, characterized in that: The upper shell (1) has a group of recesses (101), the connecting end portion (301) is located in the recess (101), the cover body (7) is detachably covered on the recess (101), and the cover body (7) and the recess (101) constitute the inspection portion.

3. The integrated BDU device according to claim 2, characterized in that: At least one connecting end portion (301) is arranged in one of the inspection portions.

4. The integrated BDU device according to claim 3, characterized in that: Hooks (701) are provided on both sides of the cover body (7), and snap holes (102) are provided on both sides of the inner wall of the recess (101); the hooks (701) extend into the snap holes (102) and snap into engagement with them, so that the cover body (7) is covered on the recess (101).

5. The integrated BDU device according to claim 4, characterized in that: The top of the hook (701) protrudes outward from the surface of the upper shell (1).

6. The integrated BDU device according to claim 3, characterized in that: The first side of the recess (101) is pivotally connected to the first side of the cover body (7), and the second side of the cover body (7) is provided with an elastic claw (702), and the elastic claw (702) abuts against the second side of the recess (101), so that the cover body (7) is covered on the recess (101).

7. The integrated BDU device according to claim 6, characterized in that: The second side of the recess (101) has a step surface (103), the elastic claw (702) is V-shaped, and the top of its front side wall has a clamping table surface (7021) that matches the step surface (103).

8. The integrated BDU device according to claim 7, characterized in that: The step surface (103) has a notch (104) at its centre, and the front side wall middle portion of the elastic claw (702) has a protrusion (7022); when the engaging table surface (7021) abuts against the step surface (103), the protrusion (7022) is engaged in the notch (104).

9. The integrated BDU device according to claim 6, characterized in that: A group of reinforcing ribs (7023) are arranged at intervals on the inner wall between the front side wall and the rear side wall of the elastic claw (702).

10. The integrated BDU device according to claim 1, characterized in that: The port of the lower shell (2) is evenly distributed with a group of snap-fit ​​blocks (201) along its edge, and the port edge of the upper shell (1) is provided with a group of snap-fits (105) opposite to the snap-fit ​​blocks (201), wherein the snap-fits (105) are connected to the snap-fit ​​blocks (201) so that the upper shell (1) and the lower shell (2) are snap-fitted.

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