CN109862632A - A kind of the plate thick film heater and its preparation process of new-energy automobile heat management - Google Patents
A kind of the plate thick film heater and its preparation process of new-energy automobile heat management Download PDFInfo
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- CN109862632A CN109862632A CN201910067253.3A CN201910067253A CN109862632A CN 109862632 A CN109862632 A CN 109862632A CN 201910067253 A CN201910067253 A CN 201910067253A CN 109862632 A CN109862632 A CN 109862632A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
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Abstract
The invention discloses a kind of plate thick film heater of new-energy automobile heat management and its preparation processes, belong to heater context, the heater includes substrate layer and dielectric layer, the dielectric layer setting is on the substrate layer, it further include resistive layer, conductor layer, glassy layer and NTC layer, the resistive layer and conductor layer are arranged on dielectric layer, and resistive layer and conductor layer are in same level, the conductor layer is connected to resistive layer, the glassy layer is arranged on resistive layer and conductor layer, and described NTC layers is arranged on glassy layer and connect with conductor layer.By being provided with NTC layers, so that preferably detecting the temperature of heater, so that the monitoring control precision of temperature is higher, multilayer dielectricity layer is printed simultaneously, so that the effect of insulation is more preferable, and the substrate layer being arranged is bigger than dielectric layer and resistive layer, so as to form better heat dissipation, preferably realizes the heat management of automotive thermal tube reason system.
Description
Technical field
The present invention relates to the plate thick film heater of heater context more particularly to a kind of new-energy automobile heat management and its
Preparation process.
Background technique
Thick film thermal printing techniques have graduallyd mature at present, with heating conduction is good, heat dissipation area is big and security performance is high
The characteristics of, but the fully effective design requirement utilized is had not been reached yet for the efficiency and performance of fluid heating.Such as existing skill
It is used to make the thick film heater of new-energy automobile heat management system in art, it generally adopts monolithic heating plate and is fixed on heating gate
On backboard, contacted to avoid thick film circuit in heating plate with external component, at the same guarantee thick film heater power demands and
It avoids leaking electricity.
Substantially using heater strip either using air conditioner compressed in new-energy automobile heat management system in the prior art
The mode of heating is heated, and the effect of heating is bad.Due to smaller, the traditional thick-film heating in the space that thick film heater uses
Device uses traditional sensor circuit or sensor, can make big, the inaccurate feelings of induction deviation occur in high-temperature condition
Condition.Therefore, it is necessary to design a kind of higher thick film heater of precision.
Summary of the invention
The purpose of the present invention is to provide a kind of plate thick film heater of new-energy automobile heat management and its preparation process,
Solve the not high technical problem of existing thick film heater precision.It is particularly customized according to the progress of the demand of client, so that structure
The demand of commodity installation that is upper and meeting businessman well in shape, so that the installation enhanced convenience of businessman, is improved
Economic benefit.
A kind of plate thick film heater of new-energy automobile heat management, including substrate layer and dielectric layer, the dielectric layer are set
It sets on the substrate layer, further includes resistive layer, conductor layer, glassy layer and NTC layer, the resistive layer and conductor layer are arranged at medium
On layer, and resistive layer and conductor layer, in same level, the conductor layer is connected to resistive layer, and the glassy layer is arranged in resistive layer
In conductor layer, described NTC layers is arranged on glassy layer and connect with conductor layer；
The substrate layer is set as rectangular slab structure, and rectangular slab structure side is provided with the substrate lead district of protrusion,
The dielectric layer, resistive layer and glassy layer are disposed as rectangle structure, the area knot of the dielectric layer, resistive layer and glassy layer
Structure is smaller than the rectangular slab structure of substrate layer.
Further, substrate mounting holes, substrate hanging hole and substrate conductor hot zone, the base are provided on the substrate layer
The center of substrate layer is arranged in plate conductor temp.-elevating area, and the substrate conductor hot zone is set as rectangle structure, the base
The side of substrate layer is arranged in plate mounting hole, and the substrate mounting holes are provided in round pore structure, and the substrate hanging hole setting exists
The other side of substrate layer, the substrate hanging hole are set as rectangle hanging hole.
Further, multiple medium reservation holes are provided on the dielectric layer, the medium reservation hole is provided in round hole
Structure.
Further, the resistive layer is made of the resistive conductor of more straight lines, is connected in series between resistive conductor and resistive conductor,
The resistive conductor parallel transverse is arranged on rectangular dielectric layer.
Further, the conductor layer includes connecting wire, NTC electrode, sensor data interface and current interface, described
Connecting wire is connected with each other resistive conductor discontinuities, and the current interface is set as the electric current input/output port of resistive layer, described
NTC electrode one end is connect by connecting wire with sensor data interface, and the other end is connect with NTC layers, the sensing data
Interface and current interface are arranged on the dielectric layer in substrate lead district.
Further, glassy layer preformed hole, glassy layer NTC preformed hole, glassy layer electric current are provided on the glassy layer to connect
Mouth and glassy layer sensor data interface preformed hole, the glassy layer preformed hole are arranged above medium reservation hole, the glass
The top of NTC electrode is arranged in layer NTC preformed hole, and the top of current interface, the glass is arranged in the glassy layer current interface
Glass layer sensor data interface preformed hole is arranged above sensor data interface.
Further, on the NTC layer be brushed with graphite linings, described NTC layers with a thickness of 0.1-0.2mm.
A kind of preparation process of the plate thick film heater of new-energy automobile heat management, the preparation process include following step
Suddenly,
Step 1: corresponding shape being cut into substrate layer according to the requirement of corresponding product, and opens up substrate mounting holes and base
Plate hanging hole；
Step 2: using printing machine by printing first medium in the substrate conductor hot zone of silk-screen printing on the substrate layer
Layer, is put into 850 degrees Celsius of sintering furnace and is sintered, and republishes third dielectric layer after then printing second dielectric layer sintering,
The overall thickness of dielectric layer is not less than 80 microns；
Step 3: be printed on printed resistor layer on dielectric layer using net, between the resistive conductor and resistive conductor in resistive layer between
It is divided into 15 microns -17 microns；
Step 4: the printed conductor layer on dielectric layer, it is cooling after on resistive layer and conductor layer printed glass layer；
Step 5: after glassy layer scleroma, silk-screen printing NTC layers is used at the NTC electrode on glassy layer.
Further, the detailed process in the step 5 are as follows:
Step 5.1: the resistance value of required thermistor is obtained, according to the sheet resistance of resistance material and required resistance value
Design thermistor volume size；
The process of design thermal resistance volume size are as follows:
The resistance value of required thermistor is R, and the sheet resistance of resistance material is R1, then obtains following formula:
R=R1*L/D
Wherein, L is the length of thermistor, and D is the thickness of thermistor,
Obtain the relational expression of the length and width of thermistor:
L/D=R/R1
Wherein, R1=ρ * L/ (W*D)=(ρ/D) * (L/W)；
W be thermistor width, it is known that L be thermistor length and D be thermistor the relationship of thickness after, root
According to design it needs to be determined that one of value, another value can also determine；
Resistance material uses the resistance slurry of model ESL NTC-2115；
When printed resistor material, the length of actual printing is pre-designed than the length for the thermistor being pre-designed
The length of thermistor is the distance between two electrodes；
Step 5.2: needing the region of printing thermal resistance to be dusted processing in thermally conductive insulating layer, use silk-screen printing
Technology is printed on resistance material in thermally conductive insulating layer；
Step 5.3: after printing, being put into sintering furnace and be sintered；
Step 5.4: after sinter molding, molding thermistor being measured, when resistance value and required thermistor
When resistance value difference, the thermistor of sinter molding is modified；
The resistance value for measuring molding thermistor is compared with the resistance value of thermistor required in advance, when than required
Thermistor resistance value hour, according to formula:
L/D=R2/R1
The length L of thermistor is known fixed, and the sheet resistance R1 known fixed of resistance material is then molding measuring
When the resistance value R2 of thermistor is changed to the resistance R of thermistor required in advance, then obtain
L/D2=R/R1
Wherein, D2 is the width of thermistor after amendment,
Modified width size as needed uses laser engraving, and the width on thermistor both sides is carried out laser high temperature carving
Carve volatilization, the width D 2 needed；
It when the resistance value of required thermistor is big, puts back to sintering furnace and is sintered, measure molding after the completion of sintering again
The resistance value of thermistor recycle above-mentioned sintering step, directly if be also greater than the resistance value of required thermistor in advance
It is greater than the resistance value of thermistor required in advance to the resistance value of molding thermistor, if measuring molding thermistor
When resistance value is identical as the resistance value of thermistor required in advance, preparation is completed, if the resistance value of molding thermistor is less than
When the resistance value of thermistor required in advance, above-mentioned the step of being less than amendment is executed.
Further, the thickness for controlling resistive layer in the step 3 in printed resistor layer is compared by front and back weight, than
It is expected it is light after, one layer of thin resistive layer is republished on original resistive layer.
Present invention employs above-mentioned technical proposal, the present invention is had following technical effect that
The present invention is by being provided with NTC layers, so that the preferably temperature of detection heater, so that the monitoring control of temperature
Precision processed is higher, while printing multilayer dielectricity layer, so that the effect of insulation is more preferable, and the substrate layer being arranged is than dielectric layer and electricity
Resistance layer is big, so as to form better heat dissipation, preferably realizes the heat management of automotive thermal tube reason system, while using
NTC layers, so that heater is thinner, it is more suitable for the use of small article；Resistance value as needed is designed corresponding print
The length and width of brush thermistor, so as to design one according to the demands of different also users the printing preparation side that designs
Method, so that precision is higher, effect is more preferable, while the thickness of the thermistor printed only has 0.1-0.2mm, and traditional patch is electric
The thickness of resistance is greater than 1mm, therefore innovative progress is obtained in thickness, preferably meets the demand of modern microelectronic.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
It is numbered in figure: 1- substrate layer, 1.1- substrate mounting holes, 1.2- substrate lead district, 1.3- substrate hanging hole, 1.4- substrate
Conductor temp.-elevating area, 2- dielectric layer, 2.1- medium reservation hole, 3- resistive layer, 3.1- resistive conductor, 4- conductor layer, 4.1- connecting wire,
4.2-NTC electrode, 4.3- sensor data interface, 4.4- current interface, 5- glassy layer, 5.1- glassy layer preformed hole, 5.2- glass
Glass layer NTC preformed hole, 5.3- glassy layer current interface, 5.4- glassy layer sensor data interface preformed hole, 6-NTC layers.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, referring to the drawings and preferred reality is enumerated
Example is applied, the present invention is described in more detail.However, it is necessary to illustrate, many details listed in specification are only to be
Reader is set to have a thorough explanation to one or more aspects of the present invention, it can also be with even without these specific details
Realize the aspects of the invention.
As shown in Figure 1, a kind of plate thick film heater structural schematic diagram of new-energy automobile heat management according to the present invention,
Including substrate layer 1 and dielectric layer 2, it further includes resistive layer 3, conductor layer 4, glassy layer 5 that the dielectric layer 2, which is arranged on substrate layer 1,
With NTC layer 6, the resistive layer (3) and conductor layer 4 are arranged on dielectric layer 2, and resistive layer 3 and conductor layer 4 are in same level
On, the conductor layer 4 is connected to resistive layer 3, and the glassy layer 5 is arranged on resistive layer 3 and conductor layer 4, and the NTC layer 6 is arranged
It is connect on glassy layer 5 and with conductor layer 4；
The substrate layer 1 is set as rectangular slab structure, and rectangular slab structure side is provided with the substrate lead district of protrusion
1.2, the dielectric layer 2, resistive layer 3 and glassy layer 5 are disposed as rectangle structure, the dielectric layer 2, resistive layer 3 and glass
The area structure of layer 5 is smaller than the rectangular slab structure of substrate layer 1.
Effect of the substrate layer 1 as support, is made of metal material.Effect of the dielectric layer 2 as heat conductive insulating.Conductor layer
4 outputting and inputting as electric current, and the unconnected position of resistive layer 3 is attached processing, while the detection as temperature
Output point afterwards.
In the embodiment of the present invention, substrate mounting holes 1.1, substrate hanging hole 1.3 and substrate conductor are provided on the substrate layer 1
The center of substrate layer 1, the substrate conductor hot zone 1.4 is arranged in hot zone 1.4, the substrate conductor hot zone 1.4
It is set as rectangle structure, the side of substrate layer 1 is arranged in the substrate mounting holes 1.1, and the substrate mounting holes 1.1 are set as
The other side of substrate layer 1 is arranged in circular pore structure, the substrate hanging hole 1.3, and the substrate hanging hole 1.3 is set as rectangle extension
Hole.Substrate layer 1 passes to the effect of heat as support, is mainly used for transmitting heat, since the area of substrate layer 1 is bigger, thus
So that the effect when passing to heat or heat dissipation is more preferable, the application in automotive thermal tube reason system is better met.
In the embodiment of the present invention, multiple medium reservation holes 2.1, the medium reservation hole 2.1 are provided on the dielectric layer 2
It is provided in round pore structure.Medium reservation hole 2.1, which is that the installation in later period is fixed, reserves the hole come, since the product is by client spy
It does not customize, therefore, is provided directly with three or two medium reservation holes 2.1.
In the embodiment of the present invention, the resistive layer 3 is made of the resistive conductor 3.1 of more straight lines, resistive conductor 3.1 and resistive conductor
It is connected in series between 3.1,3.1 parallel transverse of resistive conductor is arranged on rectangular dielectric layer 2.Resistive conductor 3.1 and resistance
Phenomena such as the distance between line 3.1 is generally more than ten microns, preferably prevents electric arc.
In the embodiment of the present invention, the conductor layer 4 includes connecting wire 4.1, NTC electrode 4.2, sensor data interface
4.3 and current interface 4.4, the connecting wire 4.2 is connected with each other 3.1 discontinuities of resistive conductor, and the current interface 4.4 is arranged
For the electric current input/output port of resistive layer 3, described 4.2 one end of NTC electrode passes through connecting wire 4.1 and sensor data interface
4.3 connections, the other end are connect with NTC layer 6, and the sensor data interface 4.3 and current interface 4.4 are arranged at substrate lead
On dielectric layer 2 in area 1.2.Inductive output interface of the NTC electrode 4.2 as NTC layer 6, so as to better temperature sensor
Numerical value.
In the embodiment of the present invention, be provided on the glassy layer 5 glassy layer preformed hole 5.1, glassy layer NTC preformed hole 5.2,
Glassy layer current interface 5.3 and glassy layer sensor data interface preformed hole 5.4, the setting of glassy layer preformed hole 5.1 are being situated between
The top of NTC electrode 4.2 is arranged in 2.1 top of matter preformed hole, the glassy layer NTC preformed hole 5.2, and the glassy layer electric current connects
The top of current interface 4.4 is arranged in mouth 5.3, and the glassy layer sensor data interface preformed hole 5.4 is arranged in sensor number
According to 4.3 top of interface.
In the embodiment of the present invention, on the NTC layer 6 be brushed with graphite linings, the NTC layer 6 with a thickness of 0.1-0.2mm.NTC
The resistance value that the specific length of layer 6 has more the resistance needed is designed, to preferably realize the detection to temperature.
The power of the application is 280VDC/1750W, having a size of 211.5mm*154.3mm, 25 DEG C of normal temperature resistance 175k of NTC
Ω ± 3%, is integrated with NTC temperature sensor by 2600 ± 200ppm/ DEG C of temperature coefficient, and temperature control precision is higher.
A kind of preparation process of the plate thick film heater of new-energy automobile heat management, the preparation process include following step
Suddenly,
Step 1: corresponding shape being cut into substrate layer 1 according to the requirement of corresponding product, and opens up substrate mounting holes 1.1
With substrate hanging hole 1.3, the size of substrate layer 1 is 211.5mm*154.3mm.
Step 2: using printing machine by printing first in the substrate conductor hot zone 1.4 that is screen printed on substrate layer 1
Dielectric layer 2 is put into 850 degrees Celsius of sintering furnace and is sintered, and then prints and republishes third Jie after second dielectric layer 2 is sintered
The overall thickness of matter layer 2, dielectric layer 2 is not less than 80 microns；
Step 3: being printed on printed resistor layer 3 on dielectric layer 2 using net, resistive conductor (3.1) and resistive conductor in resistive layer 3
15 microns -17 microns are divided between 3.1；
Step 4: the printed conductor layer 4 on dielectric layer 2, it is cooling after on resistive layer 3 and conductor layer 4 printed glass layer 5；
Step 5: after the scleroma of glassy layer 5, silk-screen printing NTC layer 6 is used at the NTC electrode 4.2 on glassy layer 5.
Detailed process in the step 5 are as follows:
Step 5.1: the resistance value of required thermistor is obtained, according to the sheet resistance of resistance material and required resistance value
Design thermistor volume size；
The process of design thermal resistance volume size are as follows:
The resistance value of required thermistor is R, and the sheet resistance of resistance material is R1, then obtains following formula:
R=R1*L/D
Wherein, L is the length of thermistor, and D is the thickness of thermistor,
Obtain the relational expression of the length and width of thermistor:
L/D=R/R1
Wherein, R1=ρ * L/ (W*D)=(ρ/D) * (L/W)；
W be thermistor width, it is known that L be thermistor length and D be thermistor the relationship of thickness after, root
According to design it needs to be determined that one of value, another value can also determine；
Resistance material uses the resistance slurry of model ESL NTC-2115；
When printed resistor material, the length of actual printing is pre-designed than the length for the thermistor being pre-designed
The length of thermistor is the distance between two electrodes；
Step 5.2: needing the region of printing thermal resistance to be dusted processing in thermally conductive insulating layer, use silk-screen printing
Technology is printed on resistance material in thermally conductive insulating layer；
Step 5.3: after printing, being put into sintering furnace and be sintered；
Step 5.4: after sinter molding, molding thermistor being measured, when resistance value and required thermistor
When resistance value difference, the thermistor of sinter molding is modified；
The resistance value for measuring molding thermistor is compared with the resistance value of thermistor required in advance, when than required
Thermistor resistance value hour, according to formula:
L/D=R2/R1
The length L of thermistor is known fixed, and the sheet resistance R1 known fixed of resistance material is then molding measuring
When the resistance value R2 of thermistor is changed to the resistance R of thermistor required in advance, then obtain
L/D2=R/R1
Wherein, D2 is the width of thermistor after amendment,
Modified width size as needed uses laser engraving, and the width on thermistor both sides is carried out laser high temperature carving
Carve volatilization, the width D 2 needed；
It when the resistance value of required thermistor is big, puts back to sintering furnace and is sintered, measure molding after the completion of sintering again
The resistance value of thermistor recycle above-mentioned sintering step, directly if be also greater than the resistance value of required thermistor in advance
It is greater than the resistance value of thermistor required in advance to the resistance value of molding thermistor, if measuring molding thermistor
When resistance value is identical as the resistance value of thermistor required in advance, preparation is completed, if the resistance value of molding thermistor is less than
When the resistance value of thermistor required in advance, above-mentioned the step of being less than amendment is executed.
Controlling the thickness of resistive layer 3 in the step 3 in printed resistor layer 3 is compared by front and back weight, than expected
After light, one layer thin of resistive layer 3 is republished on original resistive layer 3.
The resistance value of molding thermistor, if be also greater than the resistance value of thermistor required in advance, in circulation
State sintering step, until the resistance value of molding thermistor is greater than the resistance value of required thermistor in advance, if measurement at
When the resistance value of the thermistor of type is identical as the resistance value of thermistor required in advance, preparation is completed, if molding temperature-sensitive
When the resistance value of resistance is less than the resistance value of thermistor required in advance, above-mentioned the step of being less than amendment is executed.By according to big
It is small to carry out selecting different amendment steps, the resistance value until reaching needs.So that rejection rate is very low, and solves this field
A high rejection rate key technical problem.
The diameter of the hot spot of the laser beam of laser engraving is 0.1mm-0.2mm.When laser engraving, resistance material because
Laser high temperature and volatilize so that the clean degree of engraving is very long, therefore the precision of resistance is more preferable.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, it can also make several improvements and retouch, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of plate thick film heater of new-energy automobile heat management, including substrate layer (1) and dielectric layer (2), the medium
Layer (2) is arranged on substrate layer (1), it is characterised in that: further includes resistive layer (3), conductor layer (4), glassy layer (5) and NTC layers
(6), the resistive layer (3) and conductor layer (4) are arranged on dielectric layer (2), and resistive layer (3) and conductor layer (4) are same
In level, the conductor layer (4) is connected to resistive layer (3), and the glassy layer (5) is arranged on resistive layer (3) and conductor layer (4),
NTC layers described (6) are arranged on glassy layer (5) and connect with conductor layer (4)；
The substrate layer (1) is set as rectangular slab structure, and rectangular slab structure side is provided with the substrate lead district of protrusion
(1.2), the dielectric layer (2), resistive layer (3) and glassy layer (5) are disposed as rectangle structure, the dielectric layer (2), resistance
Rectangular slab structure of the area structure of layer (3) and glassy layer (5) than substrate layer (1) is small.
2. a kind of plate thick film heater of new-energy automobile heat management according to claim 1, it is characterised in that: described
Substrate mounting holes (1.1), substrate hanging hole (1.3) and substrate conductor hot zone (1.4), the substrate are provided on substrate layer (1)
Conductor temp.-elevating area (1.4) is arranged in the center of substrate layer (1), and the substrate conductor hot zone (1.4) is set as rectangle
Structure, the substrate mounting holes (1.1) are arranged in the side of substrate layer (1), and the substrate mounting holes (1.1) are provided in round hole
Structure, the substrate hanging hole (1.3) are arranged in the other side of substrate layer (1), and the substrate hanging hole (1.3) is set as rectangle extension
Hole.
3. a kind of plate thick film heater of new-energy automobile heat management according to claim 2, it is characterised in that: described
Multiple medium reservation holes (2.1) are provided on dielectric layer (2), the medium reservation hole (2.1) is provided in round pore structure.
4. a kind of plate thick film heater of new-energy automobile heat management according to claim 3, it is characterised in that: described
The resistive conductor (3.1) of resistive layer (3) You Duogen straight line forms, and is connected in series between resistive conductor (3.1) and resistive conductor (3.1), institute
Resistive conductor (3.1) parallel transverse is stated to be arranged on rectangular dielectric layer (2).
5. a kind of plate thick film heater of new-energy automobile heat management according to claim 4, it is characterised in that: described
Conductor layer (4) includes connecting wire (4.1), NTC electrode (4.2), sensor data interface (4.3) and current interface (4.4), institute
It states connecting wire (4.2) to be connected with each other resistive conductor (3.1) discontinuities, the current interface (4.4) is set as resistive layer (3)
Electric current input/output port, described NTC electrode (4.2) one end are connected by connecting wire (4.1) and sensor data interface (4.3)
It connects, the other end is connect with NTC layers (6), and the sensor data interface (4.3) and current interface (4.4) are arranged at substrate and draw
On dielectric layer (2) in line area (1.2).
6. a kind of plate thick film heater of new-energy automobile heat management according to claim 5, it is characterised in that: described
Be provided on glassy layer (5) glassy layer preformed hole (5.1), glassy layer NTC preformed hole (5.2), glassy layer current interface (5.3) and
Glassy layer sensor data interface preformed hole (5.4), the glassy layer preformed hole (5.1) are arranged on medium reservation hole (2.1)
Side, the glassy layer NTC preformed hole (5.2) are arranged in the top of NTC electrode (4.2), and the glassy layer current interface (5.3) sets
The top in current interface (4.4) is set, glassy layer sensor data interface preformed hole (5.4) setting connects in sensing data
Above mouth (4.3).
7. a kind of plate thick film heater of new-energy automobile heat management according to claim 6, it is characterised in that: described
On NTC layers (6) be brushed with graphite linings, NTC layers described (6) with a thickness of 0.1-0.2mm.
8. a kind of preparation of the plate thick film heater of new-energy automobile heat management described in -7 any one according to claim 1
Technique, which is characterized in that the preparation process includes the following steps,
Step 1: corresponding shape being cut into substrate layer (1) according to the requirement of corresponding product, and opens up substrate mounting holes (1.1)
With substrate hanging hole (1.3)；
Step 2: passing through the interior printing first in the substrate conductor hot zone (1.4) being screen printed on substrate layer (1) using printing machine
Dielectric layer (2), is put into 850 degrees Celsius of sintering furnace and is sintered, and republishes the after then printing second dielectric layer (2) sintering
The overall thickness of three dielectric layers (2), dielectric layer (2) is not less than 80 microns；
Step 3: being printed on printed resistor layer (3) on dielectric layer (2) using net, resistive conductor (3.1) and resistance in resistive layer (3)
15 microns -17 microns are divided between line (3.1)；
Step 4: the printed conductor layer (4) on dielectric layer (2), it is cooling after on resistive layer (3) and conductor layer (4) printed glass layer
(5)；
Step 5: after glassy layer (5) scleroma, silk-screen printing NTC layers is used at the NTC electrode (4.2) on glassy layer (5)
(6)。
9. a kind of preparation process of the plate thick film heater of new-energy automobile heat management according to claim 8, special
Sign is, the detailed process in the step 5 are as follows:
Step 5.1: obtaining the resistance value of required thermistor, designed according to the sheet resistance of resistance material and required resistance value
Thermistor volume size out；
The process of design thermal resistance volume size are as follows:
The resistance value of required thermistor is R, and the sheet resistance of resistance material is R1, then obtains following formula:
R=R1*L/D
Wherein, L is the length of thermistor, and D is the thickness of thermistor,
Obtain the relational expression of the length and width of thermistor:
L/D=R/R1
Wherein, R1=ρ * L/ (W*D)=(ρ/D) * (L/W)；
W is the width of thermistor, it is known that L be thermistor length and D be thermistor the relationship of thickness after, according to setting
Meter is it needs to be determined that one of value, another value can also determine；
Resistance material uses the resistance slurry of model ESL NTC-2115；
When printed resistor material, the length of actual printing is than the length for the thermistor being pre-designed, the temperature-sensitive being pre-designed
The length of resistance is the distance between two electrodes；
Step 5.2: needing the region of printing thermal resistance to be dusted processing in thermally conductive insulating layer, use screen printing technique
Resistance material is printed in thermally conductive insulating layer；
Step 5.3: after printing, being put into sintering furnace and be sintered；
Step 5.4: after sinter molding, molding thermistor being measured, when the resistance of resistance value and required thermistor
When being worth different, the thermistor of sinter molding is modified；
The resistance value for measuring molding thermistor is compared with the resistance value of thermistor required in advance, when than required heat
The resistance value hour of quick resistance, according to formula:
L/D=R2/R1
The length L of thermistor is known fixed, the sheet resistance R1 known fixed of resistance material, then the molding temperature-sensitive of measurement
When the resistance value R2 of resistance is changed to the resistance R of thermistor required in advance, then L/D2=R/R1 is obtained
Wherein, D2 is the width of thermistor after amendment,
Modified width size as needed uses laser engraving, and the width on thermistor both sides is carried out laser high temperature engraving and is waved
Hair, the width D 2 needed；
It when the resistance value of required thermistor is big, puts back to sintering furnace and is sintered, measure molding heat after the completion of sintering again
If the resistance value of quick resistance recycles above-mentioned sintering step, Zhi Daocheng be also greater than the resistance value of thermistor required in advance
The resistance value of the thermistor of type is greater than the resistance value of thermistor required in advance, if measuring the resistance value of molding thermistor
When identical as the resistance value of thermistor required in advance, preparation is completed, if the resistance value of molding thermistor is less than in advance
When the resistance value of required thermistor, above-mentioned the step of being less than amendment is executed.
10. a kind of preparation process of the plate thick film heater of new-energy automobile heat management according to claim 8, special
Sign is that the thickness of control resistive layer (3) is compared by front and back weight in printed resistor layer (3) in the step 3, than expected
It is light after, one layer of thin resistive layer (3) is republished on original resistive layer (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910067253.3A CN109862632A (en) | 2019-01-24 | 2019-01-24 | A kind of the plate thick film heater and its preparation process of new-energy automobile heat management |
| CN202010044499.1A CN111132396A (en) | 2019-01-24 | 2020-01-16 | Thick film heater of electric automobile heat discharge system and preparation method thereof |
| CN202020093025.1U CN211670999U (en) | 2019-01-24 | 2020-01-16 | Thick film heater of electric automobile heat discharge system |
| CN202010044509.1A CN111132397A (en) | 2019-01-24 | 2020-01-16 | Flat thick film heater for thermal management of new energy automobile and preparation process thereof |
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| CN201910067253.3A CN109862632A (en) | 2019-01-24 | 2019-01-24 | A kind of the plate thick film heater and its preparation process of new-energy automobile heat management |
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| CN202010044509.1A Pending CN111132397A (en) | 2019-01-24 | 2020-01-16 | Flat thick film heater for thermal management of new energy automobile and preparation process thereof |
| CN202020093025.1U Active CN211670999U (en) | 2019-01-24 | 2020-01-16 | Thick film heater of electric automobile heat discharge system |
| CN202010044499.1A Pending CN111132396A (en) | 2019-01-24 | 2020-01-16 | Thick film heater of electric automobile heat discharge system and preparation method thereof |
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| CN202020093025.1U Active CN211670999U (en) | 2019-01-24 | 2020-01-16 | Thick film heater of electric automobile heat discharge system |
| CN202010044499.1A Pending CN111132396A (en) | 2019-01-24 | 2020-01-16 | Thick film heater of electric automobile heat discharge system and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114126119A (en) * | 2021-11-19 | 2022-03-01 | 杭州热威汽车零部件有限公司 | Structure of thick film heater with metal shielding layer and preparation process thereof |
| CN115900062A (en) * | 2022-12-05 | 2023-04-04 | 华中科技大学 | Special-shaped aviation cooling liquid auxiliary heating device and preparation method |
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| CN112911741A (en) * | 2021-01-18 | 2021-06-04 | 安徽宇航派蒙健康科技股份有限公司 | Preparation method of flexible graphene electrothermal film |
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| US7196295B2 (en) * | 2003-11-21 | 2007-03-27 | Watlow Electric Manufacturing Company | Two-wire layered heater system |
| CN201805562U (en) * | 2010-07-16 | 2011-04-20 | 杨旭光 | Thick film heater |
| CN206100484U (en) * | 2016-09-20 | 2017-04-12 | 广东恒美电热科技股份有限公司 | Two -sided thick film heater |
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2019
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114126119A (en) * | 2021-11-19 | 2022-03-01 | 杭州热威汽车零部件有限公司 | Structure of thick film heater with metal shielding layer and preparation process thereof |
| CN115900062A (en) * | 2022-12-05 | 2023-04-04 | 华中科技大学 | Special-shaped aviation cooling liquid auxiliary heating device and preparation method |
| CN115900062B (en) * | 2022-12-05 | 2024-05-14 | 华中科技大学 | Special-shaped aviation cooling liquid auxiliary heating device and preparation method |
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| Publication number | Publication date |
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| CN111132397A (en) | 2020-05-08 |
| CN211670999U (en) | 2020-10-13 |
| CN111132396A (en) | 2020-05-08 |
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