Integrated charger busbar structure

Abstract

The utility model relates to an integrated charger busbar structure, which comprises a PCB layer, a base layer, a buffer part and a conductive end, the base layer is provided with a first side and a second side, the conductive end is connected to the first side of the base layer through the buffer part, and the buffer part is of a flexible structure; the PCB layer is assembled on the base layer, and the conductive end is connected with a pin and is connected with the PCB layer; a threading hole is formed between the first side and the second side in a penetrating mode and faces the conductive end. According to the utility model, through the structural effect of the buffer part, when the conductive end is subjected to a force effect relative to the base layer, the conductive end can generate certain displacement on the base layer, thereby preventing the base layer from being directly subjected to a pulling force, playing a role in protecting the whole busbar, and reducing the occurrence of the phenomenon that the busbar is damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of integrated busbars, in particular to an integrated charger busbar structure. Background Art

[0002] In the related art, after the charger is connected to an external charging source, the integrated busbar evenly distributes the electric energy to multiple groups of battery cells in the vehicle battery. At present, most battery packs use square-structured battery cells, which are easy to arrange, thereby reducing the overall volume of the battery pack and improving the energy density. However, during the use of the battery, the side of the battery cell is prone to expansion, causing the battery cells to be squeezed against each other, thereby destroying the original battery cell arrangement position, and ultimately causing the connection between the battery cell and the busbar to be pulled, thereby damaging the busbar structure. Utility Model Content

[0003] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0004] In view of the following technical problems in the prior art: due to the high-density arrangement of the battery cell groups, the internal arrangement order of the entire package will change when the battery cells expand, so that the electrical connection between the battery cells and the busbar is pulled, causing the busbar to be damaged. In order to solve this technical problem, the utility model provides the following technical solutions:

[0005] An integrated charger busbar structure includes a PCB layer, a base layer, a buffer portion, and a conductive end, wherein:

[0006] The base layer has a first side and a second side, the conductive end is connected to the first side of the base layer through a buffer portion, and the buffer portion is a flexible structure;

[0007] The PCB layer is assembled on the base layer, and the conductive end is connected with a pin and connected to the PCB layer;

[0008] A threading hole is formed between the first side and the second side and faces the conductive end.

[0009] As a preferred technical solution for an integrated charger busbar structure, the PCB layer is encapsulated inside a base layer, a docking hole is constructed on the base layer, and the pin passes through the docking hole.

[0010] As a preferred technical solution for an integrated charger busbar structure, the conductive end is distributed close to the side of the base layer, the PCB layer is located in the middle of the base layer, and the pins are connected to the PCB layer through a conductive bar.

[0011] As a preferred technical solution for an integrated charger busbar structure, the buffer portion is annular in structure, and a through hole is configured on the conductive end, which is connected to the inner side of the buffer portion ring.

[0012] As a preferred technical solution for an integrated charger busbar structure, the pins are distributed beside the conductive end and pass through the buffer portion.

[0013] As a preferred technical solution for an integrated charger busbar structure, the conductive end includes a fitting portion and a locking portion. The fitting portion is in a sheet-like structure and fits onto one side of the buffer portion. The through hole is formed on the locking portion, and a force-applying surface is formed on the locking portion.

[0014] The integrated charger busbar structure provided by the utility model has the beneficial effect that, through the structural effect of the buffer part, when the conductive end is subjected to a force relative to the base layer, it can undergo a certain displacement movement on the base layer, thereby preventing the base layer from being directly subjected to a pulling force, thereby protecting the busbar as a whole and reducing the occurrence of busbar damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0016] Figure 1 It is a three-dimensional diagram of the utility model.

[0017] Figure 2 This is a disassembled diagram of the utility model.

[0018] Figure 3 For the utility model Figure 2 Another perspective view of .

[0019] Figure 4 It is a three-dimensional vertical cut schematic diagram of part of the structure of the utility model.

[0020] Figure 5 It is a schematic diagram of the connection between some structures in the utility model.

[0021] Figure numerals: 1, PCB layer; 2, base layer; 201, first side; 202, second side; 203, threading hole; 204, docking hole; 3, buffer part; 4, conductive end; 401, through hole; 402, fitting part; 403, locking part; 404, force application surface; 5, pin; 6, guide strip. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0026] Reference Figure 1-5 An embodiment of the utility model provides an integrated charger busbar structure, including a PCB layer 1 for realizing power distribution, a base layer 2, a buffer portion 3 and a conductive end 4, wherein the base layer 2 is a hard insulating layer, preferably a resin layer, wherein:

[0027] The base layer 2 has a first side 201 and a second side 202. The conductive end 4 is connected to the first side 201 of the base layer 2 through a buffer portion 3. The buffer portion 3 is a flexible structure and can be made of silicone or rubber. The second side 202 is used to fit onto the battery cell group when the busbar is assembled as a whole.

[0028] The PCB layer 1 is assembled on the base layer 2, and the conductive end 4 is connected with a pin 5, which is connected to the PCB layer 1. The pin 5 is a thin sheet metal structure to adapt to the deformation requirements, or the pin 5 can also be a soft wire structure;

[0029] A threading hole 203 is formed between the first side 201 and the second side 202, and the threading hole 203 faces the conductive end 4;

[0030] Based on the above, when the utility model is assembled on the battery cell group, the second side 202 of the base layer 2 faces the battery cell group, and the wiring terminal on the battery cell extends into the threading hole 203 and is connected to the conductive end 4, thereby completing the circuit assembly between the battery cell and the PCB layer 1, and the base layer 2 is fixedly connected to the battery pack shell. For example, screw holes or other forms of connectors can be configured at corresponding positions on the base layer 2 (omitted in the figure) to establish a connection with the battery pack shell. When the battery cells are squeezed against each other and the single battery cell moves relative to the base layer 2, the conductive end 4 can move synchronously with the battery cell by relying on the flexibility of the buffer layer, thereby avoiding the base layer 2 from being directly subjected to hard pulling force due to the connection of the battery cells, thereby structurally protecting the base layer 2 to reduce or prevent the entire busbar from being damaged due to force.

[0031] Further, see Figure 1 Regarding the specific assembly method of the PCB layer 1, it is encapsulated on the inner side of the base layer 2, so as to increase the structural strength of the base layer 2. A docking hole 204 is constructed on the base layer 2, and the pin 5 passes through the docking hole 204 to establish a connection with the PCB layer 1. The aperture of the docking hole 204 is larger than the outer size of the pin 5, so that the pin 5 will not be excessively hindered by the base layer 2 when it moves with the conductive end 4. The docking hole 204 can also facilitate the alignment effect when the conductive end 4 is assembled on the base layer 2, thereby facilitating the manufacture of the entire busbar structure.

[0032] Further, see Figure 1 and Figure 5 The conductive end 4 is distributed close to the side of the base layer 2, and the PCB layer 1 is located in the middle of the base layer 2, so as to facilitate the neat arrangement of the battery cells. The pin 5 is connected to the PCB layer 1 through a conductive bar 6. The embedding of the conductive bar 6 in the base layer 2 can further increase the structural strength of the base layer 2. The conductive bar 6 is preferably made of copper, so as to facilitate the dispersion of heat on the PCB layer 1 to various parts of the base layer 2, so as to provide temperature reduction protection for the PCB layer 1.

[0033] Further, see Figure 1-4 The buffer portion 3 is annular in structure, and the inner side of the ring is connected to the threading hole 203. The conductive end 4 is provided with a through hole 401, which is connected to the inner side of the ring of the buffer portion 3, so that when connecting the battery cell, the battery cell terminal can be directly inserted into the through hole 401, thereby facilitating the establishment of a connection with the conductive end 4. For a specific connection method, such as bolt connection, the battery cell terminal can adopt a stud-shaped structure, so that the terminal can be locked on the conductive end 4 with the help of a nut.

[0034] Further, see Figure 2-4 The pins 5 are distributed beside the conductive ends 4 and penetrate the buffer part 3, so as to hide the pins 5 and protect the outer surface of the pins 5. In addition, the structure can limit the buffer part 3 with the help of the pins 5 to prevent the buffer part 3 from shifting due to the inadequate connection of the buffer part 3, and at the same time, avoid the pins 5 from obstructing the battery cell terminals.

[0035] Further, see Figure 4 The conductive end 4 includes a fitting portion 402 and a locking portion 403. The fitting portion 402 is in a sheet-like structure and fits on one side of the buffer portion 3, so that it can be pressed on the buffer portion 3 when subjected to force to increase its own stability. The through hole 401 is constructed on the locking portion 403, so that when subjected to force, the force is applied to the locking portion 403, thereby evenly transmitted to various locations on the fitting portion 402. A force-applying surface 404 is constructed on the locking portion 403, which is convenient for contact with the nut when the battery cell terminal is threadedly connected, thereby facilitating the force application of the nut.

[0036] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An integrated charger busbar structure, comprising a PCB layer (1), characterized in that: It also includes a base layer (2), a buffer portion (3) and a conductive end (4), wherein: The base layer (2) has a first side (201) and a second side (202); the conductive end (4) is connected to the first side (201) of the base layer (2) via a buffer portion (3); and the buffer portion (3) is a flexible structure; The PCB layer (1) is mounted on the base layer (2), and the conductive end (4) is connected to a pin (5) and is connected to the PCB layer (1); A threading hole (203) is formed between the first side (201) and the second side (202), and faces the conductive end (4).

2. The integrated charger busbar structure according to claim 1 is characterized in that: The PCB layer (1) is packaged inside the base layer (2); a docking hole (204) is constructed on the base layer (2); and the pin (5) passes through the docking hole (204).

3. The integrated charger busbar structure according to claim 2 is characterized in that: The conductive end (4) is distributed close to the side of the base layer (2), the PCB layer (1) is located in the middle of the base layer (2), and the pin (5) and the PCB layer (1) are connected via a conductive strip (6).

4. The integrated charger busbar structure according to claim 1, characterized in that: The buffer portion (3) is in the form of an annular structure, and a through hole (401) is formed on the conductive end (4) and is butt-jointed to the inner side of the ring of the buffer portion (3).

5. The integrated charger busbar structure according to claim 1, characterized in that: The pins (5) are distributed beside the conductive end (4) and penetrate the buffer portion (3).

6. The integrated charger busbar structure according to claim 4, characterized in that: The conductive end (4) comprises a fitting portion (402) and a locking portion (403); the fitting portion (402) is in a sheet-like structure and is fitted to one side of the buffer portion (3); the through hole (401) is formed on the locking portion (403); and a force-applying surface (404) is formed on the locking portion (403).

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