CN108538529A - The soft protective resistor of high current and its manufacturing method - Google Patents
The soft protective resistor of high current and its manufacturing method Download PDFInfo
- Publication number
- CN108538529A CN108538529A CN201810615935.9A CN201810615935A CN108538529A CN 108538529 A CN108538529 A CN 108538529A CN 201810615935 A CN201810615935 A CN 201810615935A CN 108538529 A CN108538529 A CN 108538529A
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- China
- Prior art keywords
- insulating substrate
- high current
- backplate
- resistive layer
- layer
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/06—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
- H01C17/065—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick film techniques, e.g. serigraphy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
- H01C17/22—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming
- H01C17/24—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material
- H01C17/242—Apparatus or processes specially adapted for manufacturing resistors adapted for trimming by removing or adding resistive material by laser
Abstract
A kind of soft protective resistor of high current and its manufacturing method include：The soft protective resistor of high current combined with temperature sensor using dual-in-line mounting process manufacture high current resistance; resistive layer (4) left and right ends are overlapped on respectively on two front electrodes (3) for being distributed in lower end, and resistance value adjustment is carried out using the radium-shine cutting of U-shaped or L-type；Insulating substrate (1) back side mounts temperature sensor (8), dual-in-line structure effectively completely cuts off PCB heat dissipations and ensures sensitive sensor circuit load variation to the shadow pay of the soft protective resistor of high current, when there is Overload in circuit, it can in time react rapidly to protect circuit, laser corrects resistance value and uses cutting symmetrical above and below, it ensure that resistance heating point is placed in the middle, it can more accurately detect and reflect circuit load situation, product has design structure ingenious, it is stable and reliable for performance, technical maturity, it is suitable for mass production, the soft protection problem of overload of the products such as motor or large current load can effectively be solved.
Description
Technical field
The present invention relates to IPC classification H01C resistors electronic devices and its structure improved technologies or H02M of manufacturing method
For between exchanging and exchanging, the conversion between AC and DC or between direct current and direct current and for power supply or similar
Power supply system be used together the soft protective resistor of high current and its and its manufacturing method.
Background technology
It is more currently used negative especially in some motor control loops in some heavy loads or big current loop
Abnormal protection mode is carried, is abnormal protection to be carried out to high-current circuit, this kind of using fuse or no-fuse switch etc.
In design protection, being typically designed surplus all can be larger, therefore often when load damages or hard failure occurs completely, just meeting
It plays a protective role, such protection can cause larger economy and the loss of time for user.
The soft protective resistor of high current according to the present invention is manufactured, the soft protection of high current aiming at this kind of application
Resistor is made of a low resistance high-power resistance and a temperature sensor, and high-power resistance can generally concatenate or simultaneously
It is connected in major loop, once major loop load abnormal electric current rises, resistive element can be made to generate heat, cause thermistor resistance value with temperature
Rise and change, set by control circuit, when temperature rise is to certain value, control circuit cut-out master can be made
Circuit power supply source is protected to play, once just can restore normal use again after failure or removing the hidden trouble, passes through the soft guarantor of high current
The application for protecting resistor can play the prevention and control of early stage to the failure of electric machine control system and reduce the wave of maintenance cost
Take, this certain product also has very extensive application in electric power monitoring and other high power load control loops.
Existing high current protection mainly carries out the protection of high current or heavy load using fuse or no-fuse switch,
And there are following major defects for this protection:
1) when circuit plays protection, general insurance silk can be burnt out, and need to be replaced, and increase maintenance cost；No fuse is opened
When pass usage time is long, because mechanical stress and long term thermal environmental work problem, the protection sensitivity of no-fuse switch will produce
Variation, no-fuse switch cannot jump to break in time when can cause to miss protection or the protection causes shielding failure
2) fuse and no-fuse switch protection belong to protect firmly, and in circuit design, design margin is equal for this kind of protection
Larger, when playing protection, large current load has generated destructive damage, and the repair and work to electric equipment products restore to bring
Many inconvenience, if maintenance time is long, the repair amount of money is excessive, or forms irrecoverability under high current damaging impact
Damage.
Invention content
The object of the present invention is to provide the soft protective resistor of high current and its manufacturing methods, solve the problems, such as above application, lead to
Cleverly structure design and special manufacture technology are crossed, production cost is significantly reduced, improves production efficiency.
The purpose of the present invention will be realized by following technical measures：Large-current electric is manufactured using dual-in-line mounting process
Resistance and temperature sensor combination resistor, using U-shaped or L-type, symmetrically radium-shine cutting line carries out resistance value adjustment；Manufacturing method includes：
A. an insulating substrate is prepared, longitudinal indentation is formed with uniformly corresponding to clathrate in the front and back of the insulating substrate
Line and transverse scribes line；
B. in the back up backplate of insulating substrate, which is located at four corner edges of line of weakness grid,
At least one backplate is located in the middle part of insulating substrate simultaneously, and is dried；
C. it is corresponded in insulating substrate on the front position that the backplate of quadrangle edge distribution is vertically hinted obliquely at, two pairs of printing is just
Face electrode, and be dried, backplate, front electrode are burnt into after dry；
D. in insulating substrate front surface printed resistor layer, resistive layer left and right ends are overlapped on respectively is distributed in two of lower end
It on front electrode, is dried, resistive layer firing is carried out after dry；
E. it between the transverse direction of adjacent resistor layer and resistive layer surface printing protective layer, is burnt into after dry；
F. marking layer, dry, firing are printed as required in protective layer middle position；
G. accurate resistance trimming is carried out to above-mentioned resistive layer by laser, resistance trimming uses U-shaped or L-type cutting line, its resistance value is made to reach
To prescribed limit, laser cutting position is that formula symmetrical above and below cuts resistance trimming, forms accurate adjustment block；
H. dispensing is carried out in insulating substrate back side designated position with spot gluing equipment, mounts temperature sensor, makes temperature sensing
Device pin is bonded as required with the backplate in centre position, and temperature sensor lower surface is made to be fitted closely with insulating substrate, patch
It is toasted after dress；
I. use special equipment that above-mentioned large stretch of insulating substrate is converted into strip base along each transverse scribes line direction in order
Plate；
J. use special equipment by above-mentioned strip insulating substrate along longitudinal direction line of weakness direction be converted into it is granular；
K. it uses special equipment to insert in the backplate of distribution up and down of granular insulating substrate, front electrode corresponding position to draw
Foot, insert pin after cross Reflow Soldering pin is closely connect with resistive layer；
L. product is cleaned with ultrasonic equipment, forms single soft start protective resistor.
Especially, the positive Middle face of insulating substrate has resistive layer, has positive electricity respectively at resistive layer or so opposite sides edge
Pole, in the middle part of the insulating substrate back side and there is backplate at left and right opposite sides edge respectively, locally has pair at resistive layer edge
The accurate adjustment block for claiming cutting isolation, in insulating substrate back side mounting temperature sensor, temperature sensor and insulating substrate back side middle part
Backplate connection, pin is installed in insulating substrate fascia edge, pin connect with backplate or front electrode.In resistance
Layer surface matcoveredn has marking layer in protective layer.Insulating substrate corresponds to quadrangle edge distribution two to front electrode, corresponds to
, there are seven backplates at the back side of insulating substrate, wherein have four corner edges that 4 backplates are located at insulating substrate,
In addition 3 backplates are located at middle part and are distributed with upper and lower position 2,1.
Advantages of the present invention and effect：It directly prints electrode on insulating substrate positive and negative, the printed resistor on front electrode,
Temperature sensor is closely mounted in resistance back centre position, temperature sensor fitting is close, ensures sensitive sensor circuit load
Variation, when Overload occurs in circuit, can in time react rapidly to protect circuit；Laser corrects resistance value using up and down
Symmetrical cutting ensure that the central point of resistive layer fever is entirely capable of vertically being mapped on the temperature sensor at the back side, can play standard
Really reliable detection control, makes protection circuit load element when there is Overload, avoids the occurrence of the large area damage of hardness
It is bad；The design structure of dual-in-line can effectively reduce interference caused by pcb board heat dissipation, it is ensured that resistive performance is stable and examines
It is accurate to survey；Ripe manufacture technology is suitable for mass production, can significant surface pair and solve electric system or large current load etc. it is negative
Lotus abnormal protection problem, and the production of scale can be formed to meet the needs of market.
Description of the drawings
Fig. 1 is the insulating substrate schematic diagram after step a of the present invention；
Fig. 2 is the insulating substrate schematic rear view after step b of the present invention；
Fig. 3 is the insulating substrate front schematic view after step c of the present invention；
Fig. 4 is the insulating substrate front schematic view after step d of the present invention；
Fig. 5 is the insulating substrate front schematic view after step e of the present invention；
Fig. 6 is the insulating substrate front schematic view after step f of the present invention；
Fig. 7 is the insulating substrate front schematic view after step g of the present invention；
Fig. 8 is the insulating substrate schematic rear view after step h of the present invention；
Fig. 9 is the strip substrate schematic diagram after step i of the present invention；
Figure 10 is the granular substrate schematic diagram after step j of the present invention；
Figure 11 is single resistance schematic diagram after step k of the present invention；
Figure 12 is the soft protective resistance finished product schematic diagram of single high current after step l of the present invention；
Figure 13 is the sectional view of the soft protective resistance of high current of the present invention.
Reference numeral includes：
Insulating substrate 1, backplate 2, front electrode 3, resistive layer 4, protective layer 5, marking layer 6, accurate adjustment block 7, temperature pass
Sensor 8, pin 9.
Specific implementation mode
The principle of the present invention includes：
A. the integrated structure for using high current resistance and temperature sensor, makes the function situation of many high currents or heavy load
It can reliably be monitored, large current load can also be avoided to greatest extent, the permanent damage generated because glitch accumulates,
Maintenance cost can be greatly reduced.
B. resistance value adjustment is carried out using the radium-shine cutting line of U-shaped or L-type, design and manufacture is formed symmetrical at the both ends R, makes electricity
The central point of resistance fever can be mapped completely on the temperature sensor at the back side so that the consistency of temperature detection can be concentrated more.
C. it uses dual-in-line mounting structure to manufacture high-power soft protective resistor, had both reduced the path of heat dissipation, and also kept away
The shadow pay that temperature sensor is interfered by pcb board or other devices is exempted from.
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1：As shown in attached drawing 1-13, the soft protective resistor manufacturing method of high current includes：
A. an insulating substrate 1 is prepared, longitudinal quarter is formed with uniformly corresponding to clathrate in the front and back of the insulating substrate
Trace line and transverse scribes line；
B. 4 are located at the four of line of weakness grid in the back up backplate 2 of insulating substrate 1, the backplate 2
A corner edge, while thering are 3 backplates 2 to be distributed with upper and lower position 2,1 close to 1 middle part of insulating substrate, and be dried；
C. on the front position that the backplate 2 of the correspondence quadrangle edge distribution of insulating substrate 1 is vertically hinted obliquely at, two pairs are printed
Front electrode 3, and be dried, backplate 2, front electrode 3 are burnt into after dry；
D. in 1 front surface printed resistor layer 4 of insulating substrate, 4 left and right ends of resistive layer are overlapped on respectively is distributed in lower end
It on two front electrodes 3, is dried, carrying out resistive layer 4 after dry is burnt into；
E. it between the transverse direction of adjacent resistor layer 4 and 4 surface printing protective layer 5 of resistive layer, is burnt into after dry；
F. marking layer 6, dry, firing are printed as required in 5 surface middle position of protective layer；
G. accurate resistance trimming is carried out to above-mentioned resistive layer 4 by laser, its resistance value is made to reach prescribed limit, laser cutting position
For cutting resistance trimming symmetrical above and below, accurate adjustment block 7 is formed；
H. dispensing is carried out in 1 back side designated position of insulating substrate with spot gluing equipment, mounts temperature sensor 8, temperature is made to pass
8 pin of sensor is bonded as required with 3 backplates 2 in centre position, keeps 8 lower surface of temperature sensor tight with insulating substrate 1
Closely connected conjunction is toasted after attachment；
I. use special equipment that above-mentioned large stretch of insulating substrate 1 is converted into strip base along each transverse scribes line direction in order
Plate；
J. use special equipment by above-mentioned strip insulating substrate 1 along longitudinal direction line of weakness direction be converted into it is granular；
K. special equipment is used to be inserted in the backplate of distribution up and down 2 of granular insulating substrate 1,3 corresponding position of front electrode
Pin 9 is filled, crossing reflow soldering after inserting pin 9 closely connect pin 9 with resistive layer 4；
L. product is cleaned with ultrasonic equipment, forms single soft start protective resistor.
In the present embodiment, the soft protective resistor structure of high current includes：Insulating substrate 1, backplate 2, front electrode
3, resistive layer 4, protective layer 5, marking layer 6, accurate adjustment block 7, temperature sensor 8 and pin 9.
As shown in Fig. 13：1 positive Middle face of insulating substrate has resistive layer 4, distinguishes at 4 or so opposite sides edge of resistive layer
There is front electrode 3, in the middle part of 1 back side of insulating substrate and there is backplate 2 at left and right opposite sides edge respectively, in resistive layer 4
Locally there is the accurate adjustment block 7 of symmetrical cutting isolation at edge, in 1 back side mounting temperature sensor 8 of insulating substrate, temperature sensor 8 with
Backplate 2 in the middle part of 1 back side of insulating substrate connects, and pin 9, pin 9 and backplate are installed in 1 fascia edge of insulating substrate
2 or front electrode 3 connect.
In aforementioned, in 4 surface matcoveredn 5 of resistive layer, there is marking layer 6 on 5 surface of protective layer.
In aforementioned, insulating substrate 1 corresponds to quadrangle edge distribution two to front electrode 3, corresponding, in the back of the body of insulating substrate 1
There are seven backplates 2 in face, wherein there is 4 backplates 2 to be located at four corner edges of insulating substrate 1, in addition there is 3 back side electricity
Pole 2 is located at middle part and is distributed with upper and lower position 2,1.
In the present embodiment, such as figure of marking layer 6 shows character in the form of " 1701 ", is not limited to this.
In the present invention, circuit overloads protection is provided, is reacted in time when overload situations occurs in circuit, cut-out in time supplies
Electrical circuit plays a protective role.
The above embodiments are merely illustrative of the technical solutions of the present invention rather than limiting the scope of the invention, although
The present invention is explained in detail with reference to preferred embodiment, it will be understood by those of ordinary skill in the art that, it can be to this hair
Bright technical solution is modified or replaced equivalently, and the spirit and scope without departing from technical solution of the present invention belongs to this hair
Bright protection domain.
Claims (4)
1. a kind of soft protective resistor of high current and its manufacturing method, which is characterized in that manufactured using dual-in-line mounting process
High current resistance and temperature sensor combination resistor carry out symmetrical resistance value adjustment using the radium-shine cutting of U-shaped or L-type；Manufacture
Method includes：
A. an insulating substrate (1) is prepared, longitudinal indentation is formed with uniformly corresponding to clathrate in the front and back of the insulating substrate
Line and transverse scribes line；
B. in the back up backplate (2) of insulating substrate (1), which is located at four angles of line of weakness grid
Edge, while at least one backplate (2) is located in the middle part of insulating substrate (1), and be dried；
C. on the front position that the backplate (2) of the corresponding quadrangle edge distribution of insulating substrate (1) is vertically hinted obliquely at, two pairs are printed
Front electrode (3), and be dried, backplate (2), front electrode (3) are burnt into after dry；
D. in insulating substrate (1) front surface printed resistor layer (4), resistive layer (4) left and right ends are overlapped on respectively is distributed in lower end
Two front electrodes (3) on, be dried, carrying out resistive layer (4) after dry is burnt into；
E. it between the transverse direction of adjacent resistor layer (4) and resistive layer (4) surface printing protective layer (5), is burnt into after dry；
F. marking layer (6), dry, firing are printed as required in protective layer (5) surface middle position；
G. accurate resistance trimming is carried out to above-mentioned resistive layer (4) by laser, resistance trimming is symmetrically cut using U-shaped or L-type, makes its resistance
Value reaches prescribed limit, and laser cutting position is cutting resistance trimming symmetrical above and below, forms accurate adjustment block (7)；
H. dispensing is carried out in insulating substrate (1) back side designated position with spot gluing equipment, attachment temperature sensor (8) makes temperature pass
Sensor (8) pin is bonded as required with the backplate (2) in centre position, makes temperature sensor (8) lower surface and insulating substrate
(1) it fits closely, is toasted after attachment；
I. use special equipment that above-mentioned large stretch of insulating substrate (1) is converted into strip base along each transverse scribes line direction in order
Plate；
J. use special equipment by above-mentioned strip insulating substrate (1) along longitudinal direction line of weakness direction be converted into it is granular；
K. the backplate of distribution up and down (2) using special equipment in granular insulating substrate (1), front electrode (3) corresponding position
Pin (9) is inserted, inserting pin (9) crosses reflow soldering and closely connect pin (9) with resistive layer (4) afterwards；
L. product is cleaned with ultrasonic equipment, forms the single soft protective resistor of high current.
2. the soft protective resistor of high current as described in claim 1 and its manufacturing method, which is characterized in that insulating substrate (1)
Positive Middle face has resistive layer (4), has front electrode (3) respectively at resistive layer (4) left and right opposite sides edge, in insulating substrate
(1) there is backplate (2) in the middle part of the back side and left and right opposite sides edge respectively, locally has symmetrical point at resistive layer (4) edge
The accurate adjustment block (7) for cutting isolation, in insulating substrate (1) back side mounting temperature sensor (8), temperature sensor (8) and insulating substrate
(1) backplate in the middle part of the back side (2) connects, in insulating substrate (1) fascia edge installation pin (9), pin (9) and back side electricity
Pole (2) or front electrode (3) connection.
3. the soft protective resistor of high current as claimed in claim 1 or 2 and its manufacturing method, which is characterized in that in resistive layer
(4) there are marking layer (6) in surface matcoveredn (5) on protective layer (5) surface.
4. the soft protective resistor of high current as claimed in claim 1 or 2 and its and its manufacturing method, which is characterized in that insulation
The corresponding quadrangle edge distribution two of substrate (1) is corresponding to front electrode (3), has seven back side electricity at the back side of insulating substrate (1)
Pole (2), wherein four corner edges for having 4 backplates (2) to be located at insulating substrate (1), in addition there is 3 backplate (2) positions
It is distributed in middle part and with upper and lower position 2,1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810615935.9A CN108538529A (en) | 2018-06-14 | 2018-06-14 | The soft protective resistor of high current and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810615935.9A CN108538529A (en) | 2018-06-14 | 2018-06-14 | The soft protective resistor of high current and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108538529A true CN108538529A (en) | 2018-09-14 |
Family
ID=63471044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810615935.9A Withdrawn CN108538529A (en) | 2018-06-14 | 2018-06-14 | The soft protective resistor of high current and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108538529A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113808800A (en) * | 2021-09-24 | 2021-12-17 | 广东风华高新科技股份有限公司 | Resistor and manufacturing method thereof |
-
2018
- 2018-06-14 CN CN201810615935.9A patent/CN108538529A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113808800A (en) * | 2021-09-24 | 2021-12-17 | 广东风华高新科技股份有限公司 | Resistor and manufacturing method thereof |
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Application publication date: 20180914 |
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| WW01 | Invention patent application withdrawn after publication |