CN205946365U

CN205946365U - Battery protection PCB circuit board

Info

Publication number: CN205946365U
Application number: CN201620925510.4U
Authority: CN
Inventors: 常奇源; 王萱
Original assignee: Ai Sheng Precision Circuit Science And Technology Ltd Of Shenzhen
Current assignee: Ai Sheng Precision Circuit Science And Technology Ltd Of Shenzhen
Priority date: 2016-08-24
Filing date: 2016-08-24
Publication date: 2017-02-08
Anticipated expiration: 2026-08-24

Abstract

The utility model discloses a battery protection PCB circuit board, it includes first plywood, a PP plastic layer, the 2nd PP plastic layer and second plywood that top -down stacked gradually, has offered a plurality of through -hole on the first plywood, this through -hole runs through first plywood and sets up, be equipped with the circuit on a PP plastic layer and the 2nd PP plastic layer, wherein, the through -hole is realized by machine drilling that the aperture of through -hole is 0.15mm. The above technical scheme is adopted in the utility model, structure and thickness to current PCB board design, make it be traditional machine drilling with prior art's laser drill change to no high dear laser drilling machine also can make this type of the region between the heart and the diaphragm hole product in can reaching the factory.

Description

A kind of battery protection PCB

Technical field

This utility model is related to wiring board manufacture technology field and in particular to a kind of battery protection PCB.

Background technology

With electronic product towards " short, little, light, thin " development, product space and topology layout be increasingly restricted, A kind of the region between the heart and the diaphragm hole technology of difference interlayer interconnection now must occur and carry out the wires design that supplementary is subject to spacial influence.And battery protection The feature of panel products, MOS device weldering is more and more accurate, and leg pad is also less and less, and spacing is also less and less to weld it is necessary to adopt The region between the heart and the diaphragm hole of mesopore is designed and to be reached interconnection, and for reaching the reliability of welding, the region between the heart and the diaphragm hole must be plated after being filled with using resin again again The mode of upper copper reaches surfacing and the size of solder joint contact surface.In order to make blind hole, existing usually adopt laser drill, And the laser drilling machine that is used for laser drill is very expensive, general producer cannot possess.

Utility model content

Therefore, for above-mentioned problem, the utility model proposes a kind of battery protection PCB, its structure is carried out Improve so as to machine drilling can be adopted, thus solving the deficiency of prior art.

In order to solve above-mentioned technical problem, this utility model be employed technical scheme comprise that a kind of battery protection PCB circuit Plate, including the first laminate stacking gradually from top to bottom, a PP plastic layer, the 2nd PP plastic layer and the second laminate, ground floor Several through holes are offered on plate, this through hole runs through the first laminate and arranges, and this through hole is blind hole；First PP plastic layer and Two PP plastic layers are provided with circuit.

As a further scheme, through hole is to be realized by machine drilling, and the section of through hole is circle, the hole of through hole Footpath is more than or equal to 0.15mm, during actual fabrication, carries out machine drilling first, is then pressed, filled up by resin after pressing, leads to The hole depth in hole determines according to the first laminate.

As a further scheme, the first laminate is additionally provided with circuit PAD（Pad）, circuit PAD is real by Copper Foil Existing, and the organic protective film as protective effect is pasted with Copper Foil.

Thickness and density for ensureing whole PCB plate meet the requirements, and so that machine drilling is achieved, enter one as one The scheme of step, the first laminate and the second laminate are realized by epoxy resin fiberglass cloth laminate, epoxy resin fiberglass The execution standard of cloth laminated board is that the plate-like layers with epoxy phenolics through hot pressing for electrician's special alkali-free glass cloth leaching are suppressed Product resin.The thickness range of this first laminate and the second laminate is 0.2-0.25mm.

Thickness and density for ensureing whole PCB plate meet the requirements, and so that machine drilling is achieved, enter one as one The scheme of step, the thickness of a PP plastic layer and the 2nd PP plastic layer is 0.22 ± 0.01mm.

As a further scheme, the thickness of the first laminate and the second laminate is identical, a PP plastic layer and second The thickness of PP plastic layer is identical.

This utility model adopts such scheme, the construction and thickness of existing pcb board is designed so as to can will be existing The laser drill of technology is changed to traditional machine drilling, and such that it is able to reach in factory, no high expensive laser drilling machine can also Make such the region between the heart and the diaphragm hole product.In addition, also by said structure, can be by existing plating process for filling hole/vacuum resin jack process It is changed to the direct filling perforation of mobility of resin during normally tradition pressing.This utility model not only reduces whole production cost, and And be also easy to realize and promote, there is good practicality.

Brief description

Fig. 1 is the sectional view of pcb board of the present utility model.

Specific embodiment

In conjunction with the drawings and specific embodiments, this utility model is further illustrated.

As a specific embodiment, referring to Fig. 1, a kind of battery protection PCB of the present utility model, including certainly Upper and under stack gradually the first laminate 1, a PP（Polypropylene, polypropylene）Plastic layer, the 2nd PP plastic layer 3 and Second laminate 4, the first laminate 1 offers several through holes 11, and this through hole 11 runs through the first laminate 1 and arranges, this through hole 11 It is blind hole；First PP plastic layer 2 and the 2nd PP plastic layer 3 are provided with circuit 21.Wherein, through hole 11 is reality by machine drilling Existing, the aperture of through hole 11 is not less than 0.15mm, and the hole depth of through hole 11 determines according to the first laminate 1.

It is additionally provided with circuit PAD on first laminate 1（Pad）12, circuit PAD12 is to be realized by Copper Foil, and is pasted with Copper Foil Organic protective film as protective effect.

For ensureing that the thickness of whole PCB plate and density meets the requirements, machine drilling is made to be achieved, the first laminate 1 and the Two laminates 4 are realized by epoxy resin fiberglass cloth laminate, and the execution standard of epoxy resin fiberglass cloth laminate is Electrician's special alkali-free glass cloth leaching tabular laminated product resin through hot pressing with epoxy phenolics.This first laminate 1 He The thickness range of the second laminate 4 is 0.2-0.25mm.The thickness of the first PP plastic layer 2 and the 2nd PP plastic layer 3 be 0.22 ± 0.01mm.

This utility model adopts such scheme, by the production method in the region between the heart and the diaphragm hole by conventional HDI factory laser drill pattern It has been modified to machine drilling mode.Realizing being changed to the key point of machine drilling by a former central layer, two PP by laser drill And two Copper Foils are changed to two central layers and one or two PP（Two PP are adopted in the present embodiment）, when selecting the region between the heart and the diaphragm hole central layer Need the central layer copper thickness holed can suitably select the way of thin HOZ on the basis of customer requirement, can sink again because after boring Copper and plate electricity make face copper reach customer requirement.Above way is equivalent to first makees two dual platens（Dual platen only makees internal layer one side line Road）, then be combined pressing, enter to be about to the filling of the region between the heart and the diaphragm hole using the mobility of resin in PP during pressing, to reach as laser drill Utilize the effect of resin vacuum consent afterwards, certainly need to do the flow process removing excessive glue together after pressing, the region between the heart and the diaphragm hole is flow to overflowing of plate face Glue removes and removes.

Referring to Fig. 1, in the present embodiment, the first laminate 1 is identical with the thickness of the second laminate 4, a PP plastic layer 2 and second The thickness of PP plastic layer 3 is identical that is to say, that this product adopts the laminate of two condition of equivalent thickness（0.20-0.25mm）And two with The PP plastics of equal thickness are made, and the section of through hole 11 is circle.

During concrete making, the region between the heart and the diaphragm hole process flow for filling holes of this programme is as follows：(I beats 0.15mm for sawing sheet-machine drilling Aperture)-heavy copper-plate electricity-interior figure transfer-(using the mobility filling the region between the heart and the diaphragm hole of resin during pressing, lamination needs interior etching-lamination The plate being drilled and having carried out one side circuit is combined with the plate carrying out one side circuit and PP) --- except excessive glue-machine drilling-heavy copper- Plate electricity-arrive normal flow again.

Although specifically show and describe this utility model in conjunction with preferred embodiment, those skilled in the art should This is understood, in the spirit and scope of the present utility model being limited without departing from appended claims, in form and details On this utility model can be made a variety of changes, be protection domain of the present utility model.

Claims

1. a kind of battery protection PCB it is characterised in that：Including the first laminate stacking gradually from top to bottom, a PP Plastic layer, the 2nd PP plastic layer and the second laminate, the first laminate offers several through holes, this through hole run through the first laminate and Setting；First PP plastic layer and the 2nd PP plastic layer are provided with circuit；Wherein, through hole is to be realized by machine drilling, through hole Aperture is more than or equal to 0.15mm.

2. a kind of battery protection PCB according to claim 1 it is characterised in that：Also set on described first laminate There is circuit PAD.

3. a kind of battery protection PCB according to claim 2 it is characterised in that：Described circuit PAD is by Copper Foil Realize, and the organic protective film as protective effect is pasted with Copper Foil.

4. a kind of battery protection PCB according to claim 1 or 2 or 3 it is characterised in that：Described first laminate Realize by epoxy resin fiberglass cloth laminate with the second laminate.

5. a kind of battery protection PCB according to claim 4 it is characterised in that：Described first laminate and second The thickness range of laminate is 0.2-0.25mm.

6. a kind of battery protection PCB according to claim 1 or 2 or 3 it is characterised in that：A described PP moulds The thickness of the bed of material and the 2nd PP plastic layer is 0.22 ± 0.01mm.

7. a kind of battery protection PCB according to claim 1 it is characterised in that：Described first laminate and second The thickness of laminate is identical, and the thickness of a PP plastic layer and the 2nd PP plastic layer is identical.