Small insertion piece structure of main current copper bar for battery pack circuit breaking unit

Abstract

The utility model discloses a small insertion piece structure of a main current copper bar for a battery pack circuit breaking unit. The small insertion piece structure comprises the main current copper bar and a small insertion piece used for leading out signals. One surface of the main current copper bar is provided with a sinking groove for positioning; and one part of the small insertion piece is matched in the sinking groove and is fixed with the main current copper bar. According to the utility model, the sinking groove is arranged on the main current copper bar, thereby facilitating the positioning of the small insertion sheet, and preventing the small insertion sheet from rotating at will after installation.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a small inserting piece structure for a main current copper bar of a battery pack disconnecting unit. Background Art

[0002] BDU (Battery Disconnect Unit) is a battery pack disconnect unit designed for the inside of the battery pack and is also a type of distribution box. As a protective battery module in the battery box of an electric vehicle, BDU is a safety solution for lithium batteries in electric vehicles, an important protection module for the high-voltage circuit system of electric vehicles, and an important component of the vehicle control system of electric vehicles. Its role is to coordinate the function conversion and energy distribution of high-voltage accessories such as the drive motor control system, battery management system, charging management system, DC / DC, electric air conditioning, electric power steering, and braking system. In the prior art, the main current copper busbar and the small plug-in are connected to the battery pack disconnect unit, usually by setting a threaded hole on the main current copper busbar and a through hole on the small plug-in, so that the small plug-in is connected to the main current copper busbar by screws. However, this method has the following problems: 1. Due to the small size of the small plug-in, the threaded hole set on the main current copper busbar is small and it is difficult to open the hole. 2. The small plug-in cannot be positioned. 3. After a period of use, the screws loosen, causing the small plug-in to rotate, shake, and other problems. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a small plug-in structure for the main current copper busbar of a battery pack circuit breaker unit. By arranging a sink groove on the main current copper busbar, the positioning of the small plug-in is facilitated and the small plug-in can be prevented from rotating at will after installation.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a small plug-in structure for the main current copper bar of the battery pack circuit breaker unit, comprising the main current copper bar and a small plug-in for signal lead-out; one side of the main current copper bar is provided with a sink groove for positioning; a part of the small plug-in fits in the sink groove and is fixed to the main current copper bar.

[0005] The small plug piece is fixed to the main current copper bar by welding.

[0006] The sink groove of the main current copper bar is provided with a convex bulge, and the small plug is provided with a through hole at a corresponding position. The through hole of the small plug is inserted into the convex bulge of the sink groove of the main current copper bar and fixed by riveting.

[0007] The sink is configured to be a rectangle, square, triangle, polygon or special shape corresponding to the shape of a part of the small insert.

[0008] At least one side of the sink leads to the edge of the main current copper busbar.

[0009] The small plug-in piece is in an L-shape, one side of the L-shape of the small plug-in piece matches with the sink groove of the main current copper bar, and the other side of the L-shape of the small plug-in piece is set as a plug-in structure.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model adopts a sink groove for positioning on one side of the main current copper bar; a part of the small plug fits in the sink groove and is fixed to the main current copper bar. This structure of the utility model can position the small plug through the sink groove and prevent the small plug from rotating at will after installation.

[0012] 2. The utility model adopts the structure that the small plug-in piece and the main current copper bar are fixed by welding. This structure of the utility model makes the connection between the small plug-in piece and the main current copper bar more solid, and prevents the small plug-in piece from falling off during operation.

[0013] 3. The utility model adopts a structure in which the main current copper bar is provided with a convex bulge in the sinking groove, and the small plug-in piece is provided with a through hole at a corresponding position, and the through hole of the small plug-in piece is inserted into the convex bulge of the sinking groove of the main current copper bar and fixed by riveting. In this structure of the utility model, the main current copper bar and the small plug-in piece do not need to be fixed by other connecting parts, so that the structure is simple and the cost is low.

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments; however, the small plug-in structure of the main current copper busbar for the battery pack circuit breaker unit of the present invention is not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the main current copper busbar and the small plug-in sheet of the first embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the coordination between the main current copper bar and the small plug-in piece of the first embodiment of the utility model;

[0017] Figure 3 It is a partial structural schematic diagram of a battery pack disconnecting unit according to the first embodiment of the utility model;

[0018] Figure 4 yes Figure 3 A is an enlarged schematic diagram;

[0019] Figure 5 It is a partial top view of the battery pack disconnecting unit of the first embodiment of the utility model;

[0020] Figure 6 yes Figure 5 The enlarged schematic diagram of point B in FIG. DETAILED DESCRIPTION

[0021] Embodiment 1

[0022] See also Figures 1 to 6 As shown, the utility model is a small plug-in structure for the main current copper bar of the battery pack circuit breaker unit, comprising a main current copper bar 1 and a small plug-in 2 for signal lead-out; one side of the main current copper bar 1 is provided with a sink 11 for positioning; a part of the small plug-in 2 fits in the sink 11 and is fixed to the main current copper bar 1.

[0023] In this embodiment, a convex 12 is provided in the sink 11 of the main current copper bar 1, and a through hole 21 is provided at a corresponding position of the small plug 2. The through hole 21 of the small plug 2 is inserted into the convex 12 of the sink 11 of the main current copper bar 1 and fixed by riveting. Specifically, a part of the small plug 2 is placed in the sink 11, and the through hole 21 on it is aligned with the convex 12, and the convex 12 is pressed with a tool, so as to realize the riveting of the small plug 2 and the main current copper bar 1.

[0024] In this embodiment, the sink 11 is configured to be a rectangle, square, triangle, polygon or special shape corresponding to the shape of a part of the small plug 2. In this embodiment, the sink 11 is configured to be a rectangle. In other embodiments, different sinks and convex ridges can be pressed on the main current copper busbar according to different small plug shapes.

[0025] In this embodiment, at least one side of the sink 11 leads to the edge of the main current copper bus 1 .

[0026] In this embodiment, the small plug 2 is L-shaped, one side 22 of the L-shape matches the sink 11 , and the other side 23 of the L-shape is configured as a plug-in structure to match the plug-in terminal 3 on the battery pack disconnect unit 10 .

[0027] The utility model discloses a small plug-in structure for the main current copper bar of the battery pack circuit breaker unit, wherein one side of the main current copper bar 1 is provided with a sinking groove 11 for positioning; a part of the small plug-in 2 fits in the sinking groove 11 and is fixed to the main current copper bar 1. This structure of the utility model can position the small plug-in through the sinking groove and prevent the small plug-in from rotating at will after installation.

[0028] The utility model discloses a small plug-in structure for the main current copper bar of the battery pack circuit breaker unit, wherein the main current copper bar 1 has a convex 12 in the sink 11, and the small plug-in 2 has a through hole 21 at a corresponding position, and the through hole 21 of the small plug-in 2 is inserted into the convex 12 of the sink 11 of the main current copper bar 1 and fixed by riveting. In this structure of the utility model, the main current copper bar and the small plug-in do not need to be fixed by other connecting parts, so that the structure is simple and the cost is low.

[0029] Embodiment 2

[0030] The utility model provides a small plug-in structure for a main current copper busbar of a battery pack circuit breaker unit, which is different from the first embodiment in that the small plug-in 2 is fixed to the main current copper busbar 1 by welding.

[0031] The utility model discloses a small plug-in structure for the main current copper bar of the battery pack circuit breaker unit, wherein the small plug-in 2 is fixed to the main current copper bar 1 by welding. This structure of the utility model makes the connection between the small plug-in and the main current copper bar more solid, and prevents the small plug-in from falling off during operation.

[0032] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with the field can use the technical content disclosed above to make many possible changes and modifications to the technical solution of the utility model without departing from the scope of the technical solution of the utility model, or modify it into an equivalent equivalent embodiment. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model should fall within the scope of protection of the technical solution of the utility model.

Claims

1. A small plug-in structure for the main current copper bar of a battery pack circuit breaker unit, comprising a main current copper bar and a small plug-in for signal extraction; characterized in that: One side of the main current copper bar is provided with a sink groove for positioning; a part of the small plug piece fits in the sink groove and is fixed to the main current copper bar.

2. The small plug-in structure for the main current copper bar of the battery pack circuit breaker unit according to claim 1 is characterized in that: The small plug piece is fixed to the main current copper busbar by welding.

3. The small plug-in structure of the main current copper bar for the battery pack circuit breaker unit according to claim 1, characterized in that: The sink groove of the main current copper bar is provided with a convex bulge, and the small plug is provided with a through hole at a corresponding position. The through hole of the small plug is inserted into the convex bulge of the sink groove of the main current copper bar and fixed by riveting.

4. The small plug-in structure for the main current copper busbar of the battery pack disconnecting unit according to claim 1, characterized in that: The sink is configured to be a rectangle, square, triangle, polygon or special shape corresponding to the shape of a part of the small insert.

5. The small plug-in structure for the main current copper bar of the battery pack disconnecting unit according to claim 4 is characterized in that: At least one side of the sink leads to the edge of the main current copper busbar.

6. The small plug-in structure for the main current copper bar of the battery pack disconnecting unit according to claim 1, characterized in that: The small plug-in piece is in an L-shape, one side of the L-shape of the small plug-in piece matches with the sink groove of the main current copper bar, and the other side of the L-shape of the small plug-in piece is set as a plug-in structure.

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