CN220693392U - Circuit board - Google Patents
Circuit board Download PDFInfo
- Publication number
- CN220693392U CN220693392U CN202321744604.8U CN202321744604U CN220693392U CN 220693392 U CN220693392 U CN 220693392U CN 202321744604 U CN202321744604 U CN 202321744604U CN 220693392 U CN220693392 U CN 220693392U
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- Prior art keywords
- circuit board
- connecting section
- expansion
- board
- overcurrent
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005452 bending Methods 0.000 claims abstract description 71
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 72
- 229910052802 copper Inorganic materials 0.000 claims description 41
- 239000010949 copper Substances 0.000 claims description 41
- 239000011889 copper foil Substances 0.000 claims description 27
- 239000011888 foil Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Structure Of Printed Boards (AREA)
Abstract
The utility model belongs to the technical field of circuit board structures, and particularly discloses a circuit board, which comprises: the main board body, the first expansion board and the second expansion board; the main board body is provided with a connecting section extending along the length direction; the connecting section is provided with a first bending area; the first expansion plate and the second expansion plate are respectively connected to two sides of the connecting section in the width direction; the first expansion plate and the second expansion plate can be bent towards the connecting section so as to be stacked with the connecting section, so that the overcurrent capacity of the connecting area of the bending section can be improved, and the overcurrent requirement of the battery can be met; the change of the appearance structure of the circuit board caused by the arrangement of the first expansion board and the second expansion board is reduced, and the requirement of the flexible circuit board on the appearance structure is met; therefore, under the condition of meeting the appearance structure of the flexible circuit board, the purpose of increasing the overcurrent capacity of the flexible circuit board is achieved, one flexible circuit board is not required to be additionally welded to increase the overcurrent capacity, the processing time is reduced, and the manufacturing cost is reduced.
Description
Technical Field
The utility model relates to the technical field of circuit board structures, in particular to a circuit board.
Background
Currently, in order to adapt to market trend, the battery capacity of the electronic product is gradually increased, and the power required by the battery protection board is also gradually increased, so that the overcurrent capacity (the maximum current allowed to pass through the circuit board) required by the flexible circuit board (Flexible Printed Circuit is abbreviated as FPC) is also gradually increased. However, due to the limitation of the appearance structure of the flexible circuit board, the overcurrent capability of a single flexible circuit board cannot meet the overcurrent capability requirement of the battery, and therefore, an additional flexible circuit board needs to be welded to increase the overcurrent capability, which results in excessively long processing time and increased manufacturing cost.
Disclosure of Invention
The purpose of the utility model is that: the technical problems that in the prior art, the excessive processing time is too long and the manufacturing cost is increased due to the fact that a flexible circuit board is additionally welded to increase the overcurrent capacity of the flexible circuit board are solved.
In order to achieve the above object, the present utility model provides a circuit board comprising:
the main board body is provided with a connecting section extending along the length direction; the connecting section is provided with a first bending area;
the first expansion plate is electrically connected with the connecting section;
the second expansion plate is electrically connected with the connecting section;
the first expansion plate and the second expansion plate are respectively connected to two sides of the connecting section in the width direction; the first expansion plate and the second expansion plate can be bent towards the connecting section so as to be stacked with the connecting section.
Preferably, the edge of the first expansion plate is sequentially provided with a first bending part and a second bending part which extend along the length direction of the connecting section, a first hollowed-out groove is formed between the first bending part and the second bending part, and the first bending part and the second bending part are connected with the connecting section.
Preferably, the edge of the second expansion plate is sequentially provided with a third bending part and a fourth bending part which extend along the length direction of the connecting section, a second hollowed-out groove is formed between the third bending part and the fourth bending part, and the third bending part and the fourth bending part are connected with the connecting section.
Preferably, the first bending area is located at a position of the connecting section corresponding to the first hollowed-out groove and the second hollowed-out groove.
Preferably, the first expansion board comprises a first overcurrent copper foil; the second expansion board comprises a second overcurrent copper foil; the first overcurrent copper foil and the second overcurrent copper foil are electrically connected with the connecting section.
Preferably, the connection section comprises a positive copper layer and a negative copper layer, the positive copper layer and the negative copper layer extend along the length direction of the connection section, and the first overcurrent copper foil is electrically connected with the positive copper layer; the second overcurrent copper foil is electrically connected with the negative copper layer.
Preferably, the main board body has a first end and a second end, and the first end, the connection section, and the second end are sequentially disposed along the length direction of the connection section.
Preferably, the first end portion is provided with a positive electrode terminal electrically connected to the positive electrode copper layer and a negative electrode terminal electrically connected to the negative electrode copper layer.
Preferably, the second end portion is provided with a connector, and the connector is electrically connected with the positive copper layer and the negative copper layer.
Preferably, when the first expansion plate, the second expansion plate and the connecting section are stacked, the first expansion plate or the second expansion plate covers the first bending area.
The circuit board provided by the utility model has the beneficial effects that: the circuit board is provided with a first expansion board and a second expansion board which are electrically connected with the main board body so as to improve the overcurrent capacity of the bendable connecting section and meet the overcurrent requirement of the battery; the first expansion board and the second expansion board are respectively arranged at two sides of the connecting section, and the first expansion board and the second expansion board are bent towards the connecting section to be in a stacked state, so that the first expansion board, the connecting section and the second expansion board are overlapped, the first expansion board and the second expansion board are prevented from protruding out of the connecting section, the change of the appearance structure of the circuit board caused by the arrangement of the first expansion board and the second expansion board is reduced, and the requirement of the flexible circuit board on the appearance structure is met; therefore, under the condition of meeting the appearance structure of the flexible circuit board, the purpose of increasing the overcurrent capacity of the flexible circuit board is achieved, one flexible circuit board is not required to be additionally welded to increase the overcurrent capacity, the process steps are reduced, the processing time is reduced, and the manufacturing cost is reduced.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
FIG. 1 is a schematic diagram of a circuit board according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram showing the distribution of copper foil of a circuit board according to an embodiment of the utility model;
FIG. 3 is a schematic view of a state structure of a first expansion plate and a second expansion plate in an embodiment of the present utility model when the first expansion plate and the second expansion plate are bent to a stacked state;
FIG. 4 is a schematic cross-sectional view of the connection section, the first expansion plate, and the second expansion plate of the embodiment of the present utility model stacked in sequence;
FIG. 5 is a schematic cross-sectional view of the first expansion plate, the connection section, and the second expansion plate of the embodiment of the present utility model stacked in sequence;
fig. 6 is a schematic cross-sectional view of the connection section, the second expansion board, and the first expansion board according to the embodiment of the present utility model when stacked in order.
In the figure, 100, a main board body; 110. a first end; 111. a positive electrode terminal; 112. a negative electrode terminal; 120. a connection section; 130. a second end; 131. a connector; 140. a conductive layer; 141. a positive copper layer; 142. a negative copper layer; 150. a first bending region; 200. a first expansion plate; 210. a first overcurrent copper foil; 220. the first hollowed-out groove; 230. a first bending part; 240. a second bending part; 300. a second expansion plate; 310. a second overcurrent copper foil; 320. the second hollowed-out groove; 330. a third bending part; 340. and a fourth bending part.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 6, a circuit board according to an embodiment of the utility model will be described.
As shown in fig. 1 and 2, a circuit board according to an embodiment of the present utility model includes: the main board body 100, the first expansion board 200 and the second expansion board 300;
the main board body 100 has a connection section 120 extending in the length direction; the connecting section 120 is provided with a first bending region 150; the main board body 100 is a flexible circuit board (Flexible Printed Circuit is abbreviated as FPC), and the main board body 100 is provided with a first end 110, a connecting section 120 and a second end 130, wherein the first end 110, the connecting section 120 and the second end 130 are sequentially arranged along the length direction of the connecting section 120 (such as the X direction in fig. 1); the first end 110 and the second end 130 each have an electrical connection terminal for connecting the lines of the FPC, and the connection section 120 has a conductive layer 140 therein; the electrical connection terminal of the first end portion 110 and the electrical connection terminal of the second end portion 130 are electrically connected through the conductive layer 140, so that the main board body 100 can be connected to components at both ends. The main board body 100 may be bent at the first bending region 150 so as to adapt to various usage spaces.
The first expansion board 200 is electrically connected with the connection section 120; the second expansion board 300 is electrically connected with the connection section 120; the first expansion board 200 and the second expansion board 300 are respectively connected to two sides of the connecting section 120 in the width direction (e.g., Y direction in fig. 1); the first expansion board 200 and the second expansion board 300 may be bent toward the connection section 120 to be stacked with the connection section 120. The first expansion board 200 and the second expansion board 300 are electrically connected with the conductive layer 140 of the connection section 120 to increase the cross-sectional area of the conductive layer 140, and increase the overcurrent capacity of the connection section 120 (the overcurrent capacity is in direct proportion to the cross-sectional area of the conductor), so that the overcurrent capacity of the main board body 100 can be increased, and the overcurrent capacity requirement of the battery can be met; the first expansion board 200 and the second expansion board 300 can be bent along the direction of the connecting section 120 and stacked with the connecting section 120, so that the main board body 100 formed by stacking the first expansion board 200, the second expansion board 300 and the connecting section 120 presents an appearance similar to the original shape of the connecting section 120, and the appearance structure limitation of the flexible circuit board is met. The external dimensions of the first expansion board 200 and the second expansion board 300 are matched with those of the connecting section 120, so that the first expansion board 200 and the second expansion board 300 after being stacked are prevented from extending to two sides of the connecting section 120 in the width direction so as to be matched with the external structural limitation of the flexible circuit board.
Specifically, referring to fig. 2 and 3, in order to maximize the overcurrent capacity, the size of the first expansion plate 200 and the size of the second expansion plate 300 are the same as the size of the connection section 120; when the first expansion board 200 and the second expansion board 300 are bent, the first expansion board 200 and the second expansion board 300 can be overlapped with the connecting section 120, so that the first expansion board 200 and the second expansion board 300 cannot exceed the connecting section 120, and the appearance structure of the flexible circuit board is prevented from being influenced.
The circuit board of the embodiment is provided with a first expansion board 200 and a second expansion board 300 which are electrically connected with the main board body 100, so that the overcurrent capacity of the bendable connecting section 120 is improved, and the overcurrent requirement of a battery is met; in addition, the first expansion board 200 and the second expansion board 300 are respectively arranged on two sides of the connecting section 120, and the first expansion board 200 and the second expansion board 300 are bent towards the connecting section 120 to overlap with the connecting section 120, so that the first expansion board 200 and the second expansion board 300 are prevented from protruding out of the connecting section 120, the change of the appearance structure of the circuit board caused by the arrangement of the first expansion board 200 and the second expansion board 300 is reduced, and the requirement of the flexible circuit board on the appearance structure is met; therefore, under the condition of meeting the appearance structure of the flexible circuit board, the purpose of increasing the overcurrent capacity of the flexible circuit board is achieved, one flexible circuit board is not required to be additionally welded to increase the overcurrent capacity, the process steps are reduced, the processing time is reduced, and the manufacturing cost is reduced.
According to the stacking direction, the second expansion section 300 and the first expansion plate 200 have various bending forms, such as the connection section 120, the first expansion plate 200 and the second expansion section 300 are stacked in sequence (as shown in fig. 4); or the first expansion board 200, the connecting section 120 and the second expansion section 300 are stacked in sequence (as shown in fig. 5); or the connection section 120, the second expansion section 300, and the first expansion plate 200 are sequentially stacked (as shown in fig. 6).
In some embodiments of the present utility model, referring to fig. 1 and 2, the first expansion board 200 includes a first over-current copper foil 210, the second expansion board 300 includes a second over-current copper foil 310, and the first over-current copper foil 210 and the second over-current copper foil 310 are electrically connected with the connection section 120, that is, the first over-current copper foil 210 of the first expansion board 200 and the second over-current copper foil 310 of the second expansion board 300 are electrically connected with the conductive layer 140 to increase the cross-sectional area of the connection section 120 and increase the over-current capability of the connection section 120;
wherein the conductive layer 140 includes a positive copper layer 141 and a negative copper layer 142; the positive copper layer 141 and the negative copper layer 142 extend along the length direction of the connection section 120, and the first overcurrent copper foil 210 is electrically connected to the positive copper layer 141; the second overcurrent copper foil 310 is electrically connected to the negative copper layer 142. That is, the first overcurrent copper foil 210 of the first expansion board 200 is used for increasing the overcurrent capacity of the positive electrode copper layer 141 of the connection section 120, and the second overcurrent copper foil 310 of the second expansion board 300 is used for increasing the overcurrent capacity of the negative electrode copper layer 142, so that the overcurrent capacity of the connection section 120 is integrally improved, and the overcurrent requirement of the battery is met.
In some embodiments of the utility model, the first end 110 has a positive terminal 111 and a negative terminal 112; the positive electrode terminal 111 is electrically connected to the positive electrode copper layer 141, and the negative electrode terminal is electrically connected to the negative electrode copper layer 142, so that the circuit board connects the positive and negative electrodes of the battery through different terminals.
In some embodiments of the utility model, the second end 130 is provided with a connector 131; the connector 131 is electrically connected to the positive copper layer 141 and the negative copper layer 142. The connector 131 is used to connect other components or devices so that the components or devices are in conduction with the battery through the circuit board.
In order to facilitate the second expansion section 300 to bend toward the connecting section 120, referring to fig. 1 and 2, a third bending portion 330 and a fourth bending portion 340 extending along the length direction of the connecting section 120 are sequentially provided at the edge of the second expansion section 300, a second hollow groove 320 is formed between the third bending portion 330 and the fourth bending portion 340, and the third bending portion 330 and the fourth bending portion 340 are connected with the connecting section 120. The third bending portion 330 and the fourth bending portion 340 have a predetermined distance therebetween, so as to form the second hollow groove 320, so that the second expansion section 300 is bent toward the connecting section 120, and the second expansion section 300 is better overlapped on the connecting section 120.
In order to better connect the second overcurrent copper foil 310 with the two ends of the negative electrode copper layer 142 so as to increase the overcurrent capability of the whole negative electrode copper layer 142, referring to fig. 1 and 2, the third bending portion 330 and the fourth bending portion 340 are respectively disposed at the two ends of the connecting section 120, so that the two ends of the second overcurrent copper foil 310 are connected with the two ends of the negative electrode copper layer 142 of the connecting section 120, so as to increase the overcurrent capability of the whole negative electrode copper layer 142, and meet the overcurrent capability requirement of the battery.
Similarly, referring to fig. 1 to 3, in order to facilitate bending of the first expansion board 200 toward the connecting section 120, a first bending portion 230 and a second bending portion 240 extending along the length direction of the connecting section 120 are sequentially disposed at the edge of the first expansion board 200, a first hollow groove 220 is formed between the first bending portion 230 and the second bending portion 240, and the first bending portion 230 and the second bending portion 240 are connected with the connecting section 120. The first bending portion 230 and the second bending portion 240 have a predetermined distance therebetween, so as to form the first hollow groove 220, so that the first expansion board 200 is bent toward the connecting section 120, and the first expansion board 200 is better stacked on the connecting section 120.
In order to better connect the first overcurrent copper foil 210 with the two ends of the positive electrode copper layer 141 so as to increase the overcurrent capacity of the whole positive electrode copper layer 141, referring to fig. 1 to 3, the first bending part 230 and the second bending part 240 are respectively located at the two ends of the connecting section 120, so that the two ends of the first overcurrent copper foil 210 are connected with the two ends of the connecting section 120, thereby increasing the overcurrent capacity of the whole positive electrode copper layer 141 and meeting the overcurrent capacity requirement of the battery.
In order to facilitate bending of the connection section 120, the first bending region 150 is located at a position of the connection section 120 corresponding to the first hollow groove 220 and the second hollow groove 320. Namely, two sides of the first bending region 150 in the width direction correspond to the first hollowed-out groove 220 and the second hollowed-out groove 320 respectively, and two sides of the first bending region 150 in the width direction are not connected with other components; after the first expansion board 200 and the second expansion board 300 are stacked with the connecting section 120, stress on both sides of the first bending region 150 in the width direction is reduced, so that the circuit board is convenient to bend at the first bending region 150.
In some embodiments of the present utility model, when the first expansion board 200, the second expansion board 300, and the connection section 120 are stacked, the first expansion board 200 or the second expansion board 300 covers the first bending region 150. That is, after the first expansion board 200 and the second expansion board 300 are stacked with the connection section 120, the thickness of the circuit board in the first bending area 150 is increased, and the bending performance of the circuit board in the first bending area 150 is increased.
In summary, compared with the prior art, the circuit board provided by the utility model at least comprises the following beneficial effects:
the circuit board of the embodiment is provided with a first expansion board 200 and a second expansion board 300 which are electrically connected with the main board body 100, so that the overcurrent capacity of the bendable connecting section 120 is improved, and the overcurrent requirement of a battery is met; in addition, the first expansion board 200 and the second expansion board 300 are respectively arranged on two sides of the connecting section 120, and the first expansion board 200 and the second expansion board 300 are bent towards the connecting section 120 to overlap with the connecting section 120, so that the first expansion board 200 and the second expansion board 300 are prevented from protruding out of the connecting section 120, the change of the appearance structure of the circuit board caused by the arrangement of the first expansion board 200 and the second expansion board 300 is reduced, and the requirement of the flexible circuit board on the appearance structure is met; therefore, under the condition of meeting the appearance structure of the flexible circuit board, the purpose of increasing the overcurrent capacity of the flexible circuit board is achieved, one flexible circuit board is not required to be additionally welded to increase the overcurrent capacity, the process steps are reduced, the processing time is reduced, and the manufacturing cost is reduced.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (10)
1. A circuit board, comprising:
a main board body (100) having a connecting section (120) extending in the longitudinal direction; the connecting section (120) is provided with a first bending region (150);
a first expansion board (200) electrically connected to the connection section (120);
a second expansion board (300) electrically connected to the connection section (120);
the first expansion plate (200) and the second expansion plate (300) are respectively connected to two sides of the connecting section (120) in the width direction; the first expansion plate (200) and the second expansion plate (300) can be bent towards the connecting section (120) so as to be stacked with the connecting section (120).
2. The circuit board of claim 1, wherein the circuit board is configured to,
the edge of the first expansion plate (200) is sequentially provided with a first bending part (230) and a second bending part (240) which extend along the length direction of the connecting section (120), a first hollowed-out groove (220) is formed between the first bending part (230) and the second bending part (240), and the first bending part (230) and the second bending part (240) are connected with the connecting section (120).
3. The circuit board of claim 2, wherein the circuit board is configured to,
the edge of the second expansion plate (300) is sequentially provided with a third bending part (330) and a fourth bending part (340) which extend along the length direction of the connecting section (120), a second hollowed-out groove (320) is formed between the third bending part (330) and the fourth bending part (340), and the third bending part (330) and the fourth bending part (340) are connected with the connecting section (120).
4. The circuit board of claim 3, wherein,
the first bending area (150) is located at a position of the connecting section (120) corresponding to the first hollowed-out groove (220) and the second hollowed-out groove (320).
5. The circuit board of claim 1, wherein the circuit board is configured to,
the first expansion board (200) comprises a first overcurrent copper foil (210); the second expansion board (300) comprises a second overcurrent copper foil (310); the first and second overcurrent foils (210, 310) are electrically connected to the connection section (120).
6. The circuit board of claim 5, wherein the circuit board is further configured to,
the connecting section (120) comprises a positive copper layer (141) and a negative copper layer (142), the positive copper layer (141) and the negative copper layer (142) extend along the length direction of the connecting section (120), and the first overcurrent copper foil (210) is electrically connected with the positive copper layer (141); the second overcurrent copper foil (310) is electrically connected to the negative copper layer (142).
7. The circuit board of claim 6, wherein the circuit board is further configured to,
the main board body (100) is provided with a first end part (110) and a second end part (130), wherein the first end part (110), the connecting section (120) and the second end part (130) are sequentially arranged along the length direction of the connecting section (120).
8. The circuit board of claim 7, wherein the circuit board is configured to,
the first end portion (110) is provided with a positive electrode terminal (111) electrically connected to the positive electrode copper layer (141) and a negative electrode terminal (112) electrically connected to the negative electrode copper layer (142).
9. The circuit board of claim 7, wherein the circuit board is configured to,
the second end (130) is provided with a connector (131), and the connector (131) is electrically connected with the positive copper layer (141) and the negative copper layer (142).
10. The circuit board of any one of claims 1-9, wherein,
when the first expansion plate (200), the second expansion plate (300) and the connecting section (120) are stacked, the first expansion plate (200) or the second expansion plate (300) covers the first bending region (150).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321744604.8U CN220693392U (en) | 2023-07-04 | 2023-07-04 | Circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321744604.8U CN220693392U (en) | 2023-07-04 | 2023-07-04 | Circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220693392U true CN220693392U (en) | 2024-03-29 |
Family
ID=90405628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321744604.8U Active CN220693392U (en) | 2023-07-04 | 2023-07-04 | Circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220693392U (en) |
-
2023
- 2023-07-04 CN CN202321744604.8U patent/CN220693392U/en active Active
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