CN220441001U

CN220441001U - FPC, circuit board, motor controller and power assembly

Info

Publication number: CN220441001U
Application number: CN202322110241.9U
Authority: CN
Inventors: 申屠江; 许文兴; 熊杰; 陆法青; 姚引强
Original assignee: Suzhou Huichuan United Power System Co Ltd
Current assignee: Suzhou Huichuan United Power System Co Ltd
Priority date: 2023-08-07
Filing date: 2023-08-07
Publication date: 2024-02-02
Anticipated expiration: 2033-08-07

Abstract

The utility model discloses an FPC, a circuit board, a motor controller and a power assembly. The FPC comprises an FPC body, a first wire and a second wire; the FPC body is provided with a back surface and a front surface which are arranged back to back, the back surface is provided with a plurality of first golden fingers which are arranged at intervals, the front surface is provided with a plurality of second golden fingers which are arranged at intervals, the plurality of first golden fingers and the plurality of second golden fingers are arranged in a staggered manner, and each first golden finger and each second golden finger are arranged in a staggered manner; the first wires are provided with a plurality of first wires, and one end of each first wire is electrically connected with a first golden finger; the second wires are provided with a plurality of second wires, and one end of each second wire is electrically connected with a second golden finger. According to the technical scheme, the distance between the adjacent PIN PINs of the FPC can be ensured to be larger than or equal to 1mm in a limited horizontal space, so that the capability of resisting short circuit failure caused by cleanliness is improved.

Description

FPC, circuit board, motor controller and power assembly

Technical Field

The utility model relates to the technical field of new energy automobiles, in particular to an FPC, a circuit board, a motor controller and a power assembly.

Background

The circuit board is typically soldered to a PCB (Printed Circuit Board ) using a hot bar (hot-press solder) technique.

When the distance between every two adjacent PIN PINs of the FPC is smaller than 1mm, the problem of short circuit failure caused by cleanliness cannot be resisted. In the related art, the FPC generally adopts a design mode of matching a single-row PIN with a single-layer wiring, so that under the miniaturization trend of products, the spacing between adjacent PIN PINs of the FPC cannot be ensured to be greater than or equal to 1mm in a limited horizontal space, and the problem of short circuit failure caused by cleanliness cannot be resisted.

Disclosure of Invention

The utility model mainly aims to provide an FPC, which aims to ensure that the distance between adjacent PIN PINs of the FPC is larger than or equal to 1mm in a limited horizontal space so as to improve the capability of resisting short circuit failure caused by cleanliness.

To achieve the above object, the present utility model provides an FPC comprising:

the FPC body is provided with a back surface and a front surface which are arranged back to back, the back surface is provided with a plurality of first golden fingers arranged at intervals, the front surface is provided with a plurality of second golden fingers arranged at intervals, the first golden fingers and the second golden fingers are arranged in a staggered manner, and each first golden finger and one second golden finger are arranged in a staggered manner;

the first wires are arranged, and one end of each first wire is electrically connected with one first golden finger;

the second wires are arranged, and one end of each second wire is electrically connected with one second golden finger.

In an embodiment of the present utility model, the FPC body has a length direction and a width direction;

the first golden fingers are arranged at intervals along the length direction of the FPC body, and the second golden fingers are arranged at intervals along the length direction of the FPC body.

In an embodiment of the utility model, each of the first gold finger and the second gold finger are arranged in a staggered manner in a width direction of the FPC body.

In an embodiment of the utility model, the first trace is disposed along a width direction of the FPC body;

and/or, the second wire extends along the width direction of the FPC body.

In an embodiment of the present utility model, a distance between any two adjacent first golden fingers is consistent;

and/or the spacing between any two adjacent second golden fingers is consistent.

In an embodiment of the utility model, the back surface is provided with a first insulating film, the first insulating film covers the first trace, and the projection of the first insulating film on the back surface is located outside the projection of the first gold finger and the second gold finger on the back surface.

In an embodiment of the utility model, the front surface is provided with a second insulating film, the second insulating film covers the second wiring, and the projection of the second insulating film on the front surface is located outside the projection of the first gold finger and the second gold finger on the front surface.

The utility model also provides a circuit board which comprises the PCB, the welding layer and the FPC, wherein the PCB, the welding layer and the FPC are sequentially stacked from bottom to top.

The utility model also provides a motor controller which comprises the FPC or the circuit board.

The utility model also provides a power assembly comprising the FPC, the circuit board or the motor controller.

In the FPC provided by the utility model, the plurality of first golden fingers and the plurality of second golden fingers are respectively arranged on the back surface and the front surface of the FPC body, so that the first wiring connected with the first golden fingers only runs on the back surface of the FPC body, and the second wiring connected with the second golden fingers only runs on the front surface of the FPC body. The first golden fingers and the second golden fingers are staggered, and each first golden finger and one second golden finger are staggered. Therefore, the distance between adjacent golden fingers on the same surface can be enlarged through dislocation, namely, the distance between adjacent PIN feet on the same surface is enlarged, and meanwhile, the whole size of the FPC can be ensured not to be enlarged. Therefore, the scheme can ensure that the distance between adjacent PIN PINs of the FPC is larger than or equal to 1mm in a limited horizontal space so as to improve the capacity of resisting short circuit failure caused by cleanliness.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a top view of one embodiment of an FPC of the present utility model;

fig. 2 is a bottom view of an embodiment of the FPC of the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	FPC	12a	Second golden finger
10	FPC body	20	First wiring
				11	Back surface	30	Second wiring
11a	First golden finger	40	First insulating film
				12	Front face	50	Second insulating film

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides an FPC100, which aims to ensure that the distance between adjacent PIN PINs of the FPC100 is larger than or equal to 1mm in a limited horizontal space so as to improve the capability of resisting short circuit failure caused by cleanliness.

The specific structure of the FPC100 of the present utility model will be described below:

referring to fig. 1 and 2 in combination, in an embodiment of the FPC100 according to the present utility model, the FPC100 includes an FPC body 10, a first trace 20 and a second trace 30; the FPC body 10 is provided with a back surface 11 and a front surface 12 which are arranged back to back, the back surface 11 is provided with a plurality of first golden fingers 11a which are arranged at intervals, the front surface 12 is provided with a plurality of second golden fingers 12a which are arranged at intervals, the plurality of first golden fingers 11a and the plurality of second golden fingers 12a are arranged in a staggered manner, and each first golden finger 11a and one second golden finger 12a are arranged in a staggered manner; the first wires 20 are provided with a plurality of first wires, and one end of each first wire 20 is electrically connected to a first golden finger 11a; the second wires 30 are provided in plurality, and one end of each second wire 30 is electrically connected to a second gold finger 12a.

It can be understood that in the FPC100 according to the present utility model, the plurality of first gold fingers 11a and the plurality of second gold fingers 12a are respectively disposed on the back surface 11 and the front surface 12 of the FPC body 10, so that the first wires 20 connected to the first gold fingers 11a only run on the back surface 11 of the FPC body 10, and the second wires 30 connected to the second gold fingers 12a only run on the front surface 12 of the FPC body 10. The first golden fingers 11a and the second golden fingers 12a are staggered, and each first golden finger 11a and one second golden finger 12a are staggered. Therefore, the distance between the adjacent golden fingers on the same surface can be enlarged through dislocation, namely, the distance between the adjacent PIN feet on the same surface is enlarged, and meanwhile, the whole volume of the FPC100 can be ensured not to be enlarged. Therefore, the scheme can ensure that the distance between the adjacent PIN PINs of the FPC100 is larger than or equal to 1mm in a limited horizontal space so as to improve the capacity of resisting short circuit failure caused by cleanliness.

In some embodiments, when 100 golden fingers are required to be disposed on the FPC100, 50 golden fingers may be disposed on the back surface 11 of the FPC body 10, and 50 golden fingers may be disposed on the front surface 12 of the FPC body 10.

It should be noted that, when the FPC100 provided by the present utility model is applied to a circuit board, the FPC100 is connected to the PCB by means of soldering, a plurality of window areas are provided on the surface of the PCB facing the FPC100, each first gold finger 11a area corresponds to one window area, and each second gold finger 12a area corresponds to one window area.

In the practical application process, the plurality of first golden finger 11a regions may be disposed at intervals along the length direction of the FPC body 10, may be disposed at intervals along the width direction of the FPC body 10, and may be disposed at intervals along the circumference direction of the FPC body 10. Similarly, the plurality of second gold finger 12a regions may be provided at intervals along the longitudinal direction of the FPC body 10, may be provided at intervals along the width direction of the FPC body 10, and may be provided at intervals along the circumferential direction of the FPC body 10.

The first wirings 20 may be disposed at intervals along the longitudinal direction of the FPC body 10, may be disposed at intervals along the width direction of the FPC body 10, and may be disposed at intervals along the circumferential direction of the FPC body 10. Similarly, the plurality of second wirings 30 may be disposed at intervals in the longitudinal direction of the FPC body 10, may be disposed at intervals in the width direction of the FPC body 10, and may be disposed at intervals in the circumferential direction of the FPC body 10.

In the practical application process, the distance between two adjacent first golden fingers 11a may be kept consistent or may be inconsistent. Similarly, the spacing between two adjacent second gold fingers 12a may be uniform or non-uniform.

The distance between each adjacent first gold finger 11a and second gold finger 12a may be the same or may be different as long as the distance between each adjacent first gold finger 11a and second gold finger 12a is 1mm or more.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the FPC100 of the present utility model, the FPC body 10 has a length direction and a width direction; the first golden fingers 11a are arranged at intervals along the length direction of the FPC body 10, and the second golden fingers 12a are arranged at intervals along the length direction of the FPC body 10.

By arranging the plurality of first golden fingers 11a at intervals along the length direction of the FPC body 10 and arranging the plurality of second golden fingers 12a at intervals along the length direction of the FPC body 10, the distance between adjacent golden fingers on the same surface can be increased as much as possible on the basis that the plurality of first golden fingers 11a and the plurality of second golden fingers 12a are arranged.

In the practical application process, each first gold finger 11a and one second gold finger 12a may be arranged in a staggered manner in the width direction of the FPC body 10, or may be arranged in a staggered manner in the length direction of the FPC body 10, or may be arranged in a staggered manner in the diagonal direction of the FPC body 10.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the FPC100 of the present utility model, each of the first gold fingers 11a and the second gold fingers 12a are disposed offset in the width direction of the FPC body 10.

By the arrangement, the first wiring 20 can be more convenient to wire on the back surface 11 of the FPC body 10, and the second wiring 30 can be more convenient to wire on the front surface 12 of the FPC body 10; meanwhile, since the first gold finger 11a and the second gold finger 12a are required to be provided with the tin penetration holes, the first trace 20 and the tin penetration Kong Fasheng on the second gold finger 12a can be prevented from interfering with each other and the second trace 30 and the tin penetration Kong Fasheng on the first gold finger 11a can be prevented by arranging each first gold finger 11a and each second gold finger 12a in a staggered manner in the width direction of the FPC body 10.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the FPC100 of the present utility model, the first trace 20 is disposed along the width direction of the FPC body 10; by the arrangement, the first wiring 20 can be arranged more regularly and more attractive on the basis that the first wiring 20 cannot interfere with the tin penetrating holes on the second golden finger 12a.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the FPC100 of the present utility model, the second trace 30 is disposed along the width direction of the FPC body 10; by the arrangement, the second wiring 30 can be arranged more regularly and more attractive on the basis that the second wiring 30 cannot interfere with the tin penetrating holes on the first golden finger 11 a.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the FPC100 of the present utility model, the spacing between any two adjacent first gold fingers 11a is uniform.

By the arrangement, on the basis that the distance between the adjacent PIN PINs of the FPC100 is larger than or equal to 1mm in a limited horizontal space, more first golden fingers 11a are arranged, namely more PIN PINs can be arranged on the back 11 of the FPC 100.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the FPC100 of the present utility model, the spacing between any two adjacent second gold fingers 12a is uniform.

By the arrangement, on the basis that the distance between the adjacent PIN PINs of the FPC100 is larger than or equal to 1mm in a limited horizontal space, more second golden fingers 12a are arranged, namely more PIN PINs can be arranged on the front face 12 of the FPC 100.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the FPC100 of the present utility model, the back surface 11 is provided with a first insulating film 40, the first insulating film 40 covers the first trace 20, and the projection of the first insulating film 40 on the back surface 11 is located outside the projection of the first gold finger 11a and the second gold finger 12a on the back surface 11.

By using the first insulating film 40 to cover the first wires 20, the first wires 20 can be insulated and protected by the first insulating film 40, so that the capability of the first wires 20 for resisting short-circuit failure caused by cleanliness is improved; in addition, by making the projection of the first insulating film 40 on the rear surface 11 be located outside the projection of the first gold finger 11a and the second gold finger 12a on the rear surface 11, the first insulating film 40 can be prevented from interfering with the tin-permeable Kong Fasheng on the first gold finger 11a and the second gold finger 12a.

In practical use, the first insulating film 40 may be specifically disposed on the back surface 11 of the FPC body 10 by adhesion, adsorption, or the like.

As an example, the material of the first insulating film 40 may be specifically PE (polyethylene), PP (Polypropylene), or the like.

In some embodiments, the first insulating film 40 may be a castellated insulating film with a staggered arrangement of irregularities.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the FPC100 of the present utility model, the front surface 12 is provided with the second insulating film 50, the second insulating film 50 covers the second trace 30, and the projection of the second insulating film 50 on the front surface 12 is located outside the projection of the first gold finger 11a and the second gold finger 12a on the front surface 12.

By using the second insulating film 50 to cover the second wires 30, the second wires 30 can be insulated and protected by the second insulating film 50, so that the capability of the second wires 30 for resisting short-circuit failure caused by cleanliness is improved; in addition, by making the projection of the second insulating film 50 on the front surface 12 be out of the projections of the first gold finger 11a and the second gold finger 12a on the front surface 12, the second insulating film 50 can be prevented from interfering with the tin-penetration Kong Fasheng on the first gold finger 11a and the second gold finger 12a.

In practical applications, the second insulating film 50 may specifically be disposed on the front surface 12 of the FPC body 10 by bonding, adsorption, or the like.

As an example, the material of the second insulating film 50 may be specifically PE (polyethylene), PP (Polypropylene), or the like.

In some embodiments, the second insulating film 50 may be a castellated insulating film with a staggered arrangement of the irregularities. The shapes of the first insulating film 40 and the second insulating film 50 may or may not be identical.

The utility model also provides a circuit board, which comprises a PCB, a welding layer and the FPC100 which are sequentially laminated from bottom to top, wherein the specific structure of the FPC100 refers to the embodiment, and the circuit board at least has all the beneficial effects brought by the technical schemes of the embodiment because the circuit board adopts all the technical schemes of the embodiment.

In this embodiment, the flexible printed circuit board (FPC) 100 is soldered to the PCB by using the Hotbar technology, so that effective connection between the FPC100 and the PCB can be ensured.

The utility model also provides a motor controller, which comprises the FPC100 or the circuit board, wherein the FPC100 or the circuit board has the specific structure described in the above embodiments, and the motor controller adopts all the technical schemes of all the embodiments, so that the motor controller has at least all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted.

The utility model also provides a power assembly, which comprises the FPC100, the circuit board or the motor controller, wherein the FPC100, the circuit board or the motor controller refer to the embodiment, and the power assembly at least has all the beneficial effects brought by the technical schemes of the embodiment because the power assembly adopts all the technical schemes of all the embodiments, and the detailed description is omitted.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. An FPC, comprising:

2. The FPC of claim 1, wherein said FPC body has a length direction and a width direction;

3. The FPC of claim 2, wherein each of said first gold fingers and said second gold fingers are offset in a width direction of said FPC body.

4. The FPC of claim 3, wherein said first trace is disposed extending in a width direction of said FPC body;

and/or, the second wire extends along the width direction of the FPC body.

5. The FPC of any one of claims 1 to 4, wherein a pitch between any adjacent two of said first gold fingers is uniform;

6. The FPC according to any one of claims 1 to 4, wherein the back surface is provided with a first insulating film, the first insulating film covers the first wiring, and a projection of the first insulating film on the back surface is located outside a projection of the first gold finger and the second gold finger on the back surface.

7. The FPC according to any one of claims 1 to 4, wherein the front surface is provided with a second insulating film, the second insulating film covers the second wiring, and projections of the second insulating film on the front surface are located outside projections of the first gold finger and the second gold finger on the front surface.

8. A circuit board comprising a PCB, a solder layer, and the FPC according to any one of claims 1 to 7, which are laminated in this order from bottom to top.

9. A motor controller comprising the FPC of any one of claims 1 to 7 or the circuit board of claim 8.

10. A powertrain comprising the FPC of any one of claims 1 to 7, or comprising the circuit board of claim 8, or comprising the motor controller of claim 9.