Copper bar assembly and power distribution device

Abstract

The utility model discloses a copper bar assembly and a power distribution device. The copper bar assembly comprises at least one copper bar; the copper bar is arranged on the middleware, and the middleware is detachably connected to a power control device and / or a power distribution device; the connection modes of the middle piece and the copper bars comprise clamping connection, threaded connection, riveting or injection molding; and the middle piece is provided with a limiting groove for accommodating the copper bar. According to the copper bar assembly disclosed by the utility model, the middleware is arranged to assemble the copper bar in advance, and after a production line receives the copper bar assembly, the copper bar assembly can be directly assembled on a power control device and then installed on a power distribution device; during subsequent maintenance and replacement, all the copper bars can be uniformly taken down by disassembling the copper bar assembly, which is convenient and time-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of power electronic equipment, in particular to a copper busbar assembly and a power distribution device. Background Art

[0002] With the development of science and technology and economy, there are often a series of energy and environmental problems. Therefore, new energy vehicles have gradually appeared in people's daily lives. At present, new energy vehicles have increasingly higher requirements for the control, protection, detection and other functions of high-voltage distribution devices (including power distribution units PDU). However, the current distribution devices use a structure in which independent components (including copper busbars, power control devices, etc.) are interconnected to achieve functions. Specifically, the existing practice is to install a single copper busbar on the power control device, and then install the power control device on the base of the distribution device. This practice results in a slow production line for high-voltage distribution devices, and when disassembling, the screws on the copper busbar need to be removed one by one to remove the copper busbar, which is time-consuming and labor-intensive. In addition, the copper busbars are scattered and difficult to manage after disassembly.

[0003] On the other hand, in the above-mentioned high-voltage power distribution equipment, high-voltage sampling points are generally required to monitor whether power control components such as contactors and relays are sticking. Once adhesion is detected, the battery management system will issue an early warning and take relevant measures to ensure the high-voltage safety of the power battery system. Currently, the copper busbar and ring terminal are connected by bolt locking in voltage signal monitoring. This method has a slow production cycle and requires real-time monitoring and recording of torque and rotation angle during production, which also poses a risk of bolts falling. Utility Model Content

[0004] The embodiments of the present invention provide a copper busbar assembly and a power distribution device to solve the problems of the existing power distribution device production line, such as slow beats caused by the separate installation of individual copper buses, and the time-consuming and labor-intensive and difficult management problems of disassembling the copper buses.

[0005] According to one aspect of an embodiment of the present invention, a copper busbar assembly is provided, comprising:

[0006] At least one copper busbar;

[0007] An intermediate component, the copper busbar is arranged on the intermediate component, and the intermediate component is detachably connected to the power control device and / or the power distribution device;

[0008] Wherein, the connection method between the intermediate piece and the copper busbar includes: clamping, threaded connection, riveting or injection molding;

[0009] The intermediate piece is provided with a limiting groove for accommodating the copper busbar.

[0010] In some embodiments, the intermediate piece is an injection molded piece; and / or,

[0011] The copper busbar is generally U-shaped or L-shaped.

[0012] In some embodiments, the middle piece is frame-shaped and is provided with a plurality of the limiting grooves arranged in an array.

[0013] In some embodiments, the intermediate piece is provided with a first buckle for fixing and / or limiting the copper busbar; or,

[0014] The middle piece is provided with a first clip for fixing and / or limiting the copper busbar. The first clip includes a first clip portion and a second clip portion, which are respectively provided on two opposite sides of the copper busbar.

[0015] In some embodiments, the intermediate piece is provided with a second buckle, and the second buckle is used to connect the intermediate piece to the power control device and / or the power distribution device; or,

[0016] The intermediate piece is connected to the power control device and / or the power distribution device by means of threaded connection and / or clamping.

[0017] In some embodiments, the copper busbar assembly further includes a signal sampling module, the signal sampling module includes a sampling terminal, and the sampling terminal is welded to the copper busbar.

[0018] In some embodiments, the signal sampling module further includes a wire and a connection terminal, wherein the wire is connected between the sampling terminal and the connection terminal; and / or,

[0019] The middle piece is provided with a third buckle for limiting the position of the wires in the signal sampling module.

[0020] In some embodiments, the connection terminal and the connector are detachably connected; and / or,

[0021] The connector is detachably connected to the female end of the circuit board.

[0022] According to another aspect of an embodiment of the present invention, a power distribution device is provided, comprising: a base, a power control device and a copper busbar assembly according to any one of the above embodiments, wherein the copper busbar assembly is detachably connected to the power control device, and the copper busbar assembly and / or the power control device are detachably connected to the base.

[0023] Compared with the prior art, the utility model has the following advantages:

[0024] The copper busbar assembly provided in the embodiment of the present invention can realize the pre-assembly of each copper busbar. After receiving the above-mentioned copper busbar assembly, the distribution device production line can directly assemble it to the distribution device; and during subsequent maintenance and replacement, all copper buses can be removed uniformly by disassembling the copper busbar assembly, which is convenient and time-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of a copper busbar assembly provided by an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the exploded structure of a copper busbar assembly provided by one embodiment of the present invention;

[0027] Figure 3 It is a structural diagram of a power distribution device provided in one embodiment of the present utility model.

[0028] Description of the accompanying drawings:

[0029] 100. Copper busbar assembly; 1. Copper busbar; 11. Hole; 2. Middle piece; 21. Frame body; 22. Reinforcement rib; 3. Limiting groove; 4. First clip; 41. First clipping part; 42. Second clipping part; 5. Second clip; 6. Sampling terminal; 7. Wire; 8. Third clip; 9. Connector; 10. Bolt; 200. Power control device; 300. Base. DETAILED DESCRIPTION

[0030] The following description sets forth many specific details to facilitate a thorough understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the scope of the present invention. Therefore, the present invention is not limited to the specific implementations disclosed below.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the 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. Therefore, they cannot be understood as limitations on the present invention.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] In the description of the present invention, reference to terms such as "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention.

[0034] The embodiment of the utility model discloses a copper busbar assembly 100, which is combined with Figure 1 As shown, the copper busbar assembly 100 includes:

[0035] At least one copper busbar 1;

[0036] The copper busbar 1 is connected to and mounted on the middle piece 2, and the middle piece is detachably connected to the power control device 200. The power control device includes but is not limited to contactors, various relays, various switches, and circuit breakers.

[0037] Of course, in some preferred embodiments, the middleware may be connected to the power distribution device in addition to being connected to the power control device, so as to enhance the reliability of the connection.

[0038] This embodiment achieves pre-assembly of the copper busbar 1 by providing an intermediate piece 2 and pre-installing the copper busbar 1 on the intermediate piece 2, so that after receiving the above-mentioned copper busbar assembly 100, the production line of the power distribution device can directly assemble it to the power control device, and then install the power control device to the power distribution device such as PDU; and during subsequent maintenance and replacement, all the copper busbars 1 can be removed uniformly by disassembling the copper busbar assembly 100, which is convenient and time-saving.

[0039] In some optional embodiments, the intermediate member 2 is an injection molded part, and can also be a part made of other insulating materials such as plastic. Figure 2 As shown, the middle piece 2 includes a frame body 21 and reinforcing structures such as reinforcing ribs 22 .

[0040] In addition, combined Figure 1 and Figure 2 The copper busbar 1 shown in the figure is generally U-shaped or L-shaped, with one end connected to the middleware 2 and the power control device 200, and the other end connected to the base 300. The copper busbar 1 is provided with a hole, which can be a through hole or a threaded hole, to facilitate the passage of a bolt to achieve the above-mentioned connection.

[0041] In some embodiments, the connection manner between the intermediate piece 2 and the copper busbar 1 includes at least one of the following manners: clamping, threaded connection, riveting or injection molding.

[0042] Optional, combined Figure 1-3In the embodiment shown, the fixing method of the intermediate component 2 and the copper busbar 1 includes limiting with a first clip 4 and connecting with a bolt 10 and a hole 11 at a position where the intermediate component 2 and the copper busbar 1 are in contact with the power control device 200 .

[0043] In some embodiments, combined Figure 2 As shown, the intermediate piece 2 is provided with a limiting groove 3 for accommodating the copper busbar 1, and the copper busbar 1 is partially disposed in the limiting groove.

[0044] In a preferred embodiment, the middle piece 2 is frame-shaped and includes a frame body 21 on which a plurality of limiting grooves arranged in an array are provided. The array can be arranged in a single row or multiple rows. Figure 2 The copper busbar 1 includes four limiting grooves, and each limiting groove 3 is used to accommodate one copper busbar 1.

[0045] In some optional embodiments, the intermediate piece 2 is provided with a first clip 4 for limiting the position of the copper bar 1. Figure 1 and Figure 2 As shown, the first clip 4 includes a first clip portion 41 and a second clip portion 42, which are respectively arranged on opposite sides of the copper busbar. The first clip portion includes a portion perpendicular to the frame body 21 and a raised portion provided on the portion, the raised portion being used to prevent the copper busbar 1 from disengaging from the limiting groove 3.

[0046] In some optional embodiments, the middle piece 2 is provided with a second clip 5, which is used to connect the middle piece 2 to the power distribution device. When connected, the second clip is inserted into the base 300 of the power distribution device described below, thereby limiting and securing the middle piece 2. Preferably, the second clip 5 includes two opposing clipping portions, thereby clipping the middle piece 2 to the base 300 of the power distribution device.

[0047] In an optional embodiment, combined with Figure 3 As shown, according to the installation requirements, the copper busbar assembly 100 is Figure 1 The orientation in the figure is inverted and then installed on the power control device 200 and the distribution device.

[0048] Specifically, during assembly, the copper busbar assembly 100 and the power control device 200 are pre-assembled on the base 300 using the second clip 5 on the copper busbar assembly 100. Bolts 10 are then tightened into holes 11, thereby strengthening the connection between the middleware 2, the power control device 200, and the power distribution device. Furthermore, because the copper busbar is pre-assembled, while ensuring positional accuracy in the X and Y directions, a certain clearance is reserved in the Z direction to accommodate installation tolerances on the copper busbar's locking overlap.

[0049] It should be noted that the first buckle 4 and the second buckle 5 can be arranged on the same side of the middle piece 2 or on opposite sides, and the second buckle 5 adopts a structure similar to that of the first buckle 4 .

[0050] In some embodiments, see Figure 1 As shown, the copper busbar assembly 100 further includes a signal sampling module. The signal sampling module includes a sampling terminal 6. The sampling terminal 6 is welded on the copper busbar 1. Optionally, the signal sampling module collects voltage signals or current signals.

[0051] In this embodiment, by welding the sampling terminal to the copper busbar 1 , a small welding space is required, the structure is simpler, the production cycle is improved, and the risk of the sampling terminal bolt falling off is avoided.

[0052] Specifically, ultrasonic or laser welding is used. Customized tooling is required to secure the sampling terminals 6. The number of sampling terminals 6 is variable, adapting to the voltage monitoring logic of different OEMs. The soldering area of ​​the sampling terminals 6 on each copper busbar must be clearly defined to avoid the soldering area being on the overlapping surface of the copper busbar 1.

[0053] In some embodiments, the signal sampling module further includes a wire 7 and a connection terminal, and the wire 7 is connected between the sampling terminal and the connection terminal.

[0054] The intermediate piece 2 is provided with a third buckle 8 for limiting the position of the wire. Optionally, the third buckle 8 adopts the same or similar structure as the first buckle, including two adjacent clamping parts, and clamps the wire 7 between the two clamping parts.

[0055] In one embodiment, the connection terminal is detachably connected to the connector, which can be specifically connected by plugging or crimping; and the connector is detachably connected to the female end of a circuit board such as a PCB.

[0056] Specifically, one end of the wire 7 is crimped to the sampling terminal 6, and the other end is crimped to the connector terminal and installed in the connector 9. The connector 9 can be quickly plugged into the corresponding female end on the circuit board to realize the voltage sampling function. Figure 1 and Figure 2 As shown, the wire 7 is assembled into the middle piece 2 , and the direction of the wire 7 can be defined by the third buckle 8 .

[0057] See also Figure 3As shown, a power distribution device provided according to another embodiment of the present invention includes: a base 300, a power control device 200 and a copper busbar assembly 100 according to any one of the above embodiments, the copper busbar assembly 100 is detachably connected to the power control device 200 by a bolt 10 and a snap structure. Specifically, the copper busbar assembly 100 and the power control device 200 are detachably connected to the base 300 by bolts and a second snap 5.

[0058] Optionally, the power control device 200 may be a contactor, a switching device that uses electromagnetic principles and other principles to control the main circuit through a control circuit. As the primary switching control element, the contactor requires the acquisition of its high-voltage contact signals to detect its operating state and improve safety during use. Therefore, the signal sampling module is preferably a voltage acquisition module.

[0059] Specific, combined Figure 3 After the copper busbar assembly 100 is assembled, wait until the contactor 200 is assembled to the base 300 before proceeding to assemble the copper busbar assembly 100. The second clip 5 secures the copper busbar assembly 100 to the base 300, and the retaining structure cooperates to complete the pre-assembly of the copper busbar. Then, the locking bolts 10 secure all the copper busbars. To disassemble and replace the contactor, simply remove the bolts 10 to remove the copper busbar assembly 100 and complete the contactor replacement.

[0060] It should be noted that although the present invention is disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined by the claims of the present invention.

Claims

1. A copper busbar assembly, characterized in that: The copper busbar assembly comprises: At least one copper busbar; An intermediate component, the copper busbar is arranged on the intermediate component, and the intermediate component is detachably connected to the power control device and / or the power distribution device; Wherein, the connection method between the intermediate piece and the copper busbar includes: clamping, threaded connection, riveting or injection molding; The intermediate piece is provided with a limiting groove for accommodating the copper busbar.

2. The copper busbar assembly according to claim 1, characterized in that: The intermediate piece is an injection molded piece; and / or, The copper busbar is in a U-shape or an L-shape as a whole.

3. The copper busbar assembly according to claim 1, characterized in that: The middle piece is frame-shaped and is provided with a plurality of limit grooves arranged in an array.

4. The copper busbar assembly according to claim 1, characterized in that: The intermediate piece is provided with a first buckle for fixing and / or limiting the copper bar; or, The middle piece is provided with a first buckle for fixing and / or limiting the copper bar, and the first buckle includes a first clamping portion and a second clamping portion, which are respectively provided on two opposite sides of the copper bar.

5. The copper busbar assembly according to claim 1 or 2, characterized in that: The intermediate piece is provided with a second buckle, and the second buckle is used to connect the intermediate piece to the power control device and / or the power distribution device; or, The intermediate piece is coupled to the power control device and / or the power distribution device by means of threaded connection and / or snap-on connection.

6. The copper busbar assembly according to claim 1 or 2, characterized in that: The copper busbar assembly further includes a signal sampling module, and the signal sampling module includes a sampling terminal, and the sampling terminal is welded on the copper busbar.

7. The copper busbar assembly according to claim 6, characterized in that: The signal sampling module further includes a wire and a connection terminal, wherein the wire is connected between the sampling terminal and the connection terminal; and / or, The middle piece is provided with a third buckle for limiting the position of the wire in the signal sampling module.

8. The copper busbar assembly according to claim 7, characterized in that: The connection terminal and the connector are detachably connected; and / or, The connector is detachably connected to the female end on the circuit board.

9. A power distribution device, characterized in that: The power distribution device includes a base, a power control device and a copper busbar assembly according to any one of claims 1 to 8, wherein the copper busbar assembly is detachably connected to the power control device, and the copper busbar assembly and / or the power control device are detachably connected to the base.

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