CN220606140U

CN220606140U - Low-cost flexible circuit board structure

Info

Publication number: CN220606140U
Application number: CN202320573839.9U
Authority: CN
Inventors: 刘寅; 叶国深; 季文帅
Original assignee: Interplex Suzhou Precision Engineering Ltd
Current assignee: Interplex Suzhou Precision Engineering Ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2024-03-15
Anticipated expiration: 2033-03-22

Abstract

The utility model provides a flexible circuit board structure with low cost, which relates to the technical field of automobile electronics, and comprises the following components: the insulating layer assembly comprises an upper insulating layer, a middle insulating layer is arranged at the bottom of the upper insulating layer, and a lower insulating layer is arranged at the bottom of the middle insulating layer. In the current design, the main body area component is a two-layer flexible board, namely, two layers of metal circuits are arranged, the connecting area component, the acquisition area and the mounting structure are single-layer, the dividing reason is based on the difference of cell core module designs, the design space is considered, for example, when the cell core is compact, the main body area component of the flexible circuit board is small in design space, two or more layers of designs are considered at the moment, the connecting area component can be designed into a single layer or two layers according to the difference of connector type selection and PCBA (BMS) design, and the current design is single-layer, and the acquisition area and the mounting structure are realized.

Description

Low-cost flexible circuit board structure

Technical Field

The utility model relates to the technical field of automobile electronics, in particular to a low-cost flexible circuit board structure.

Background

In the field of automotive electronics, various flexible circuit boards, such as a Battery Management System (BMS) of a new energy automobile, are generally used for acquiring parameters such as voltage, current and temperature of each battery cell by using a flexible printed circuit board (FPC).

However, in the prior art, most of the flexible circuits are flexible printed circuit boards, that is, FPCs, and the process flow of FPCs is complex, and the flexible circuits can be completed through a plurality of processes (such as material cutting, hot pressing, etching, surface treatment, reflow soldering, UV curing, etc.), so that the cost is high, meanwhile, the correlation between the processes is high, the process requirement is high, and the superposition of multiple layers of circuits is difficult to realize, so that a novel flexible circuit board structure with low cost needs to be provided.

Disclosure of Invention

The utility model aims to solve the problems of complex process, high requirement on the manufacturing process, high cost and difficult realization of multi-layer circuit superposition in the prior art, and provides a low-cost flexible circuit board structure.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a low cost flexible circuit board structure comprising: the insulation layer assembly comprises an upper insulation layer, a middle insulation layer is arranged at the bottom of the upper insulation layer, and a lower insulation layer is arranged at the bottom of the middle insulation layer; the circuit board layer assembly comprises an upper flexible circuit board, and a lower flexible circuit board is arranged at the bottom of the upper flexible circuit board; a body region assembly and a connection region assembly.

Preferably, the upper flexible circuit board is arranged at the bottom of the lower insulating layer, so that connection among different layers is realized.

Preferably, the main body area assembly includes a front end, one end of the front end is provided with a middle end, one end of the middle end is provided with a tail end, the front end metal lines are thinner and more in number, the tail end metal lines are wider and less in number, because the more backward, the fewer the collection points are, the less the required metal lines are, in order to ensure the consistency of the whole width of the main body area, the more backward the metal lines are designed to be wider so as to ensure the strength of the whole flexible board, and in general, the functions of the front end, the middle end and the tail end are integrated and all play the role of electric signal transmission, but the structures are different, and the performance requirements are consistent.

Preferably, the connection area assembly is disposed on an outer surface of the main body area assembly, the connection area assembly includes an upper layer of metal circuit, and the metal circuits of the upper and lower layers of flexible circuit boards can be designed differently according to different connection modes with the outside.

Preferably, the outer surface of upper metal circuit is provided with lower floor's metal circuit, the surface of main part regional subassembly is provided with the frame, and upper and lower two-layer misplaces here, then merges into one deck, welds with the connector of adaptation later, has the through-hole in the mounting structure to be used for installing on battery package electric core frame.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. in the present design, the main body area component is a two-layer flexible board, i.e. two layers of metal circuits are provided, the connection area component, the collection area and the mounting structure are single-layer, the division is based on the difference of the cell core module designs, the design space is considered, for example, when the cell core is compact, the main body area component of the flexible circuit board is smaller in design space, two or more layers of designs are considered at the moment, the connection area component can be designed into a single layer or two layers according to the difference of the type selection of the connector and the PCBA (BMS) design, the current design is a single layer, the collection area is welded to the cell core by a single layer of exposed metal pads, the mounting structure is also a single layer, and the number of layers consistent with the main body area component can be designed to increase the strength of the flexible board if necessary.

2. In the utility model, the front end metal lines are thinner but more in number, the tail end metal lines are wider but less in number, because the collection points are fewer the more backward, the more backward the metal lines are designed to be wider to ensure the whole width of the main body area is consistent, so as to ensure the strength of the whole soft board.

Drawings

FIG. 1 is a schematic diagram showing the overall structure of a low-cost flexible circuit board structure according to the present utility model;

FIG. 2 is a schematic diagram showing the structure of a flexible circuit board structure with low cost according to the present utility model;

FIG. 3 is a schematic diagram of a main area of a flexible circuit board structure with low cost according to the present utility model;

FIG. 4 is a schematic diagram showing a connection region of a flexible circuit board structure with low cost according to the present utility model;

FIG. 5 is another schematic view illustrating a connection region of a low-cost flexible circuit board structure according to the present utility model;

FIG. 6 is a schematic diagram of an acquisition area of a flexible circuit board structure with low cost according to the present utility model;

FIG. 7 is a schematic diagram showing a mounting structure of a flexible circuit board structure with low cost according to the present utility model;

fig. 8 is a schematic diagram of a low-cost flexible circuit board structure after being mounted.

Legend description: 1. an insulating layer assembly; 101. an upper insulating layer; 102. a middle insulating layer; 103. a lower insulating layer; 2. a circuit board layer assembly; 201. an upper flexible circuit board; 202. a lower flexible circuit board; 3. a body region assembly; 301. a front end; 302. a middle end; 303. tail end; 4. a connection region assembly; 401. an upper metal line; 402. a lower metal line; 5. and a frame.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

Referring to fig. 1-8, the present utility model provides a low-cost flexible circuit board structure, comprising: the insulation layer assembly 1, the insulation layer assembly 1 comprises an upper insulation layer 101, a middle insulation layer 102 is arranged at the bottom of the upper insulation layer 101, and a lower insulation layer 103 is arranged at the bottom of the middle insulation layer 102; the circuit board layer assembly 2, the circuit board layer assembly 2 includes an upper flexible circuit board 201, and a lower flexible circuit board 202 is arranged at the bottom of the upper flexible circuit board 201; a body region assembly 3 and a connection region assembly 4.

As shown in fig. 1 to 8, the upper flexible circuit board 201 is disposed at the bottom of the lower insulating layer 103, so as to realize connection between different layers.

As shown in fig. 1-8, the main body area assembly 3 includes a front end 301, one end of the front end 301 is provided with a middle end 302, one end of the middle end 302 is provided with a tail end 303, the front end 301 has thin metal lines but a large number of metal lines, and the tail end 303 has wide metal lines but a small number, because the fewer the collection points are, the fewer the metal lines are needed, in order to ensure the whole width of the main body area to be consistent, the wider the metal lines are designed to ensure the strength of the whole soft board, and in general, the functions of the front end 301, the middle end and the tail end 303 are integrated and all play the role of electric signal transmission, but the structures are different, and the performance requirements are consistent.

As shown in fig. 1 to 8, the connection area assembly 4 is disposed on the outer surface of the main body area assembly 3, and the connection area assembly 4 includes an upper metal circuit 401, and the metal circuits of the upper and lower flexible circuit boards can be designed differently according to the connection mode with the outside.

As shown in fig. 1 to 8, the outer surface of the upper metal wire 401 is provided with a lower metal wire 402, the outer surface of the main body region assembly 3 is provided with a frame 5, the upper and lower layers are dislocated therefrom and then combined into one layer, and then welded with an adapted connector, and through holes are designed in the mounting structure for mounting on the battery pack frame 5.

The application method and the working principle of the device are as follows: in use, in the present design, the main body area assembly 3 is a two-layer flexible board, i.e. there are two layers of metal lines, the connection area assembly 4, the collection area and the mounting structure are single layers, the division reason is based on the difference of the cell core assembly designs, consider the design space, for example, when the cell core is more compact, the main body area assembly 3 of the flexible circuit board is smaller in design space, at this time, consider two or more layers of designs, for the connection area assembly 4, according to the difference of the type selection of the connector and the PCBA (BMS) design, can be designed as a single layer or two layers, the present design is a single layer, for the collection area and the mounting structure, usually a single layer, the collection area is welded to the cell core by a single layer of bare metal pad, for the mounting structure, usually also a single layer, if necessary, can also be designed to be consistent with the main body area assembly 3 in order to increase the strength of the flexible board, the front end 301 metal lines are thinner but more, the tail end 303 metal lines are wider but less in number, because the collection point is less, required metal lines are also less, in order to ensure that the whole width of the main body area is consistent, the whole width is different, the whole metal lines are designed to be wider, the whole metal lines are designed to be more than the tail end, the whole metal lines are designed to be the whole, can be designed to be the same as a whole, the two layers are not designed to be mounted on the front end and the flexible circuit board, and the two layers are different from the front end can be mounted on the flexible circuit board, and the front end can be mounted on the flexible circuit assembly, the flexible circuit board can be mounted on the front end assembly, the flexible circuit assembly is not be the front and the flexible circuit board can be mounted, and the flexible circuit can be mounted, and the two layer can be the front and the flexible circuit module can be mounted, and the front and the device can be mounted.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. A low cost flexible circuit board structure, comprising:

the insulation layer assembly (1), the insulation layer assembly (1) comprises an upper insulation layer (101), a middle insulation layer (102) is arranged at the bottom of the upper insulation layer (101), and a lower insulation layer (103) is arranged at the bottom of the middle insulation layer (102);

the circuit board layer assembly (2), the circuit board layer assembly (2) comprises an upper flexible circuit board (201), and a lower flexible circuit board (202) is arranged at the bottom of the upper flexible circuit board (201);

a main body region assembly (3) and a connection region assembly (4).

2. The low cost flexible circuit board structure of claim 1, wherein: the upper flexible circuit board (201) is arranged at the bottom of the lower insulating layer (103).

3. The low cost flexible circuit board structure of claim 2, wherein: the main body area assembly (3) comprises a front end (301), one end of the front end (301) is provided with a middle end (302), and one end of the middle end (302) is provided with a tail end (303).

4. The low cost flexible circuit board structure of claim 1, wherein: the connecting area assembly (4) is arranged on the outer surface of the main body area assembly (3), and the connecting area assembly (4) comprises an upper layer metal circuit (401).

5. The low cost flexible circuit board structure of claim 4, wherein: the outer surface of the upper metal circuit (401) is provided with a lower metal circuit (402), and the outer surface of the main body area assembly (3) is provided with a frame (5).