CN209051325U - A kind of automotive seat with constant temperature heating device - Google Patents
A kind of automotive seat with constant temperature heating device Download PDFInfo
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- CN209051325U CN209051325U CN201820911794.0U CN201820911794U CN209051325U CN 209051325 U CN209051325 U CN 209051325U CN 201820911794 U CN201820911794 U CN 201820911794U CN 209051325 U CN209051325 U CN 209051325U
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Abstract
The utility model discloses a kind of automotive seat with constant temperature heating device, including seat, temperature sensor, control circuit and heating system；In the heating system, PTC heating sheet surface is connect with cooling fin, can significantly increase the radiating efficiency of PTC heating sheet；The high insulating heat-conductive film of insulation high-temperature-resistant, thermal coefficient is wrapped up around heated at constant temperature piece, and the thermally conductive good shell of setting, so that the heat that PTC heating sheet generates, by insulating heat-conductive film, heat conduction shell can be effectively transferred heat to, heating power and heat transfer efficiency are further improved.
Description
Technical field
The utility model relates to automotive seating art fields, more particularly to a kind of automotive seats with constant temperature heating device
Chair.
Background technique
In recent years, universal with the comfortable technology of vehicle, built-in hot type Comfortable seat also gradually for people recognize with
It receives.In the existing automotive seat with heating function, the electric heating sheets of use are that resistive heater is wrapped in micarex
On (mica sheet), possess heatproof height, the advantages that good insulation preformance.But the electric heating sheets form of this kind of mode is more single, heats function
Rate and heat transfer efficiency are obviously insufficient.
Summary of the invention
The purpose of the utility model is to provide a kind of automotive seats with constant temperature heating device, can effectively improve automobile
Seat heating power and heat transfer efficiency.
To achieve the above object, the utility model provides following scheme:
A kind of automotive seat with constant temperature heating device, the automotive seat with constant temperature heating device includes: seat
Chair, temperature sensor, control circuit and heating system；
The temperature sensor is arranged in the seat surface, for detecting the temperature of the seat surface；
The control circuit is arranged inside the seat, connect with the temperature sensor, for according to the temperature
Generate computer heating control instruction；
The heating system is arranged inside the seat；The heating system is connect with the control circuit, is used for root
The heating system is opened or closed according to computer heating control instruction；The heating system includes relay and heated at constant temperature dress
It sets；The constant temperature heating device includes heated at constant temperature piece, insulating heat-conductive film, spring and shell；
The insulating heat-conductive film is wrapped in around the heated at constant temperature piece；The shell is hollow structure open at one end；
The heated at constant temperature piece and the spring for wrapping up the insulating heat-conductive film are arranged in the shell；The spring is arranged in institute
The opening of shell is stated, the length and width of the spring is greater than the length and width of the opening；First table of the spring
Face is contacted with the opening, and the second surface of the spring is contacted with the heated at constant temperature piece for wrapping up the insulating heat-conductive film；
The heated at constant temperature piece is by PTC heating sheet, the first cooling fin, the second cooling fin, first electrode and second electrode
Composition；The PTC heating sheet is the carbon fever tablet with ptc characteristics；Two electrodes of the PTC heating sheet are respectively with described
One electrode and second electrode electrical connection；The first surface of the PTC heating sheet is connect with first cooling fin；It is described
The second surface of PTC heating sheet is connect with second cooling fin.
Optionally, the PTC heating sheet, the first electrode and the second electrode are formed as one by hot compression
Body.
Optionally, the PTC heating sheet, first cooling fin, second cooling fin, the first electrode and institute
Stating second electrode is square shape sheet；Shape, the size of first cooling fin and second cooling fin are all the same；Described first
Electrode and shape, the size of the second electrode are all the same；The width of first cooling fin, the first electrode width with
The PTC heating sheet it is of same size；The length of first cooling fin is the first electrode, the second electrode and institute
State the sum of the length of PTC heating sheet.
Optionally, the heated at constant temperature piece with a thickness of 2.2-2.5mm.
Optionally, the material of the first electrode and the second electrode is chemical nickel plating+silver, melt-blown metallic aluminium, printing
One of aluminium+silver or printing aluminium；The material of the insulating heat-conductive film is silica gel, ceramics or is coated in the ceramics of plastic foil
It is a kind of；The material of the shell is steel or aluminium；The material of the cooling fin is copper and aluminium alloy.
Optionally, the heated at constant temperature piece is multiple；Multiple heated at constant temperature pieces are arranged side by side, and two neighboring constant temperature
The ventilation gap that there is gas supply stream to pass through between heating sheet；PTC heating sheet in multiple heated at constant temperature pieces is connected in parallel.
Optionally, the temperature sensor is NTC temperature sensor, and the resistance value of the NTC temperature sensor is with temperature
Degree rises and declines rapidly.
Optionally, the control circuit includes constant-current supply, voltage sensor and voltage comparator；
The constant-current supply is connect with the NTC temperature sensor, for powering for the NTC temperature sensor；
The voltage sensor is connect with the NTC temperature sensor, for measuring the electricity of the NTC temperature sensor
Pressure；
The first input end of the voltage comparator is connect with the voltage sensor, and the second input terminal accesses voltage threshold
Value, the size for the voltage and voltage threshold；When the voltage is greater than the voltage threshold, high level is exported；
When the voltage is less than the voltage threshold, low level is exported；
The relay is connect with the output end of the voltage comparator；The relay is normally opened relay；
When the voltage comparator exports high level, the relay closure connects the constant temperature heating device；
When the voltage comparator exports low level, the relay disconnects the constant temperature heating device.
According to specific embodiment provided by the utility model, the utility model discloses following technical effects:
The utility model provides a kind of automotive seat with constant temperature heating device, including seat, temperature sensor, control
Circuit processed and heating system；In the heating system, PTC heating sheet surface is connect with cooling fin, can significantly increase PTC
The radiating efficiency of heating sheet；The high insulating heat-conductive film of insulation high-temperature-resistant, thermal coefficient is wrapped up around the heated at constant temperature piece, and is set
Thermally conductive good shell is set, so that the heat that PTC heating sheet generates effectively is transferred heat to and led by insulating heat-conductive film
Hot shell, further improves heating power and heat transfer efficiency.
In addition, in constant temperature heating device provided by the utility model, the heated at constant temperature piece can be it is multiple, it is multiple described
Heated at constant temperature piece is arranged side by side, and can significantly improve heating power；And there is gas supply circulation between two neighboring heated at constant temperature piece
The ventilation gap crossed, helps to improve radiating efficiency.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the automotive seat embodiment one provided by the utility model with constant temperature heating device；
Fig. 2 is the control circuit of the automotive seat embodiment one provided by the utility model with constant temperature heating device and adds
The connection schematic diagram of hot systems；
Fig. 3 is the constant temperature heating device of the automotive seat embodiment one provided by the utility model with constant temperature heating device
Structural schematic diagram；
Fig. 4 is the control circuit of the automotive seat embodiment two provided by the utility model with constant temperature heating device and adds
The connection schematic diagram of hot systems.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The purpose of the utility model is to provide a kind of automotive seats with constant temperature heating device, can effectively improve automobile
Seat heating power and heat transfer efficiency.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Fig. 1 is the structural schematic diagram of the automotive seat embodiment one provided by the utility model with constant temperature heating device.
Referring to Fig. 1, a kind of automotive seat with constant temperature heating device, comprising: seat 1, temperature sensor 2, control circuit 3 and heating
System 4.
The seat 1 includes seat 101 and the chair back 102.The temperature sensor 2 is arranged in the seat 101 and the chair back
102 surface, for detecting the temperature on 1 surface of seat.
The temperature sensor 2 is NTC temperature sensor, and the NTC temperature sensor is generally by NTC thermistor, spy
Head, shell (metal-back or plastic casing etc.) extend lead and metal terminal or even end-apparatus composition.Wherein NTC thermistor exists
Under certain measurement power, resistance value has the rule that as the temperature rises and declines rapidly.Therefore it can pass through NTC temperature-sensitive
The resistance change of resistance determines corresponding temperature change.
The inside of the seat bottom is arranged in the control circuit 3, connect with the temperature sensor 2, is used for basis
The temperature generates computer heating control instruction.In the present embodiment, the computer heating control instruction is high level or low level.The heating
System is connect with the control circuit, for opening or closing the heating system according to computer heating control instruction.It needs to infuse
Meaning, the heating system only open Shi Caineng in automobile ignition switch and work.
The heating system 4 includes relay and constant temperature heating device.The constant temperature heating device is set to 101 He of seat
The side that the chair back 102 is in contact with human body.For the ease of cleaning, the constant temperature heating device and seat 101 and the chair back 102 are removable
Unload connection, easy disassembly.
Fig. 2 is the control circuit of the automotive seat embodiment one provided by the utility model with constant temperature heating device and adds
The connection schematic diagram of hot systems, the control circuit 3 include constant-current supply 301, voltage sensor 302 and voltage comparator 303.
The constant-current supply 301 is connect with the NTC temperature sensor 2, for powering for the NTC temperature sensor 2.
The voltage sensor 303 is connect with the NTC temperature sensor 2, for measuring the voltage of the NTC temperature sensor 2.Institute
Stating heating system 4 includes relay 5 and constant temperature heating device 6.The output end of the relay 5 and the voltage comparator 303
Connection；The relay 5 is normally opened relay.
Referring to fig. 2, the first input end of the voltage comparator 5 is connect with the voltage sensor 302, the second input terminal
Access voltage threshold, the size for the voltage and voltage threshold.Voltage threshold determines by corresponding temperature threshold, by
There is the rule for rising with temperature and declining rapidly in the resistance value of NTC temperature sensor, therefore can be by the way that resistance threshold is arranged
Value detects whether the temperature of seat surface is lower than temperature threshold, opens the heating system when being lower than temperature threshold.Work as seat
When the temperature on chair surface reduces, the resistance value of the NTC temperature sensor can be increased rapidly, and the utility model passes through described in setting
Constant-current supply 301 converts the resistance change of the NTC temperature sensor to the variation of voltage, i.e., when the temperature of seat surface
When degree reduces, the resistance value of the NTC temperature sensor can be increased rapidly, and corresponding voltage also increases rapidly；Work as seat surface
Temperature when being lower than temperature threshold, corresponding voltage is higher than voltage threshold, can control at this time open the heating system into
Row seat heating.Specifically:
When the voltage is higher than the voltage threshold, high level is exported；When the voltage comparator 303 exports high level
When, the closure of relay 5 connects the constant temperature heating device 6, carries out seat heating by the constant temperature heating device 6.
When the voltage is lower than the voltage threshold, indicates that seat surface temperature is higher than temperature threshold, add without opening
Hot systems, the voltage comparator 303 exports low level at this time.When the voltage comparator 303 export low level when, it is described after
Electric appliance 5 disconnects the constant temperature heating device 6, and the constant temperature heating device 6 stops heating.
Fig. 3 is the constant temperature heating device of the automotive seat embodiment one provided by the utility model with constant temperature heating device
Structural schematic diagram.Referring to Fig. 3, the constant temperature heating device 6 includes: heated at constant temperature piece, insulating heat-conductive film 606,607 and of spring
Shell 608.The heated at constant temperature piece is by PTC heating sheet 601, the first cooling fin 602, the second cooling fin 603, first electrode 604
And second electrode 605 forms.
The PTC heating sheet 601 is the carbon fever tablet with ptc characteristics, is sutured and is formed with conductive wire, can basis
Different resistance values require and the parameter of heating temperature, adjust the phosphorus content of carbon fever tablet, the area of carbon fever tablet and establishment
Technique etc. meets technical requirements.PTC (Positive Temperature CoeffiCient) refers to resistance at a certain temperature
It sharply increases, the thermistor phenomenon with positive temperature coefficient or material, steady temperature sensor can be dedicated as.
The PTC heating sheet 601 has the advantage that
(1) since carbon fever tablet has ptc characteristics, resistance value becomes larger as temperature increases, when heating sheet is logical
When electricity work, temperature rises, and resistance becomes larger, and power reduces, and when the temperature is too low, resistance reduces, and power increases (voltage is certain)；
(2) the phenomenon that uniformly, temperature consistency is fine for the fever of carbon fever tablet, is not in hot-spot, safety coefficient is very
It is high；
(3) this PTC heating sheet can be temperature automatically controlled, thus the system for saving other auxiliary controls such as temperature controller,
To which product cost greatly reduce, there is the very strong market competitiveness；
(4) carbon fever tablet is soft, and bending resistance is outstanding, and chemical property is stablized, and durability is outstanding, and the PTC is heated
Piece is used in automobile or civil goods industry, has extraordinary comfort.The electric heating sheets that existing vehicle heating appliance uses,
It is mostly to be wrapped in resistive heater on micarex (mica sheet), easily bending fracture, once it squats on the seat or to seat surface
Apply dotted load with backrest, is just likely to cause the fracture of resistive heater or micarex.And the carbon fever that the present invention uses
Piece is soft, and bending resistance is outstanding, will not damage because of unbalance stress, and long service life, job stability are high.
Two electrodes of the PTC heating sheet 601 are electrically connected with the first electrode 604 and the second electrode 605 respectively
It connects.The PTC heating sheet 601, the first electrode 604 and the second electrode 605 are formed as one by hot compression, even
Connect that performance is good, stability is high.
The first surface of the PTC heating sheet 601 is connect with first cooling fin 602；The PTC heating sheet 601
Second surface is connect with second cooling fin 603.The material of first cooling fin 602 and second cooling fin 603 is
Copper and aluminium alloy.By the way that the good cooling fin of heat dissipation performance is arranged on PTC heating sheet surface, can significantly improve described
The heat dissipation of PTC heating sheet, heat transfer efficiency.
Preferably, the PTC heating sheet 601, first cooling fin 602, second cooling fin 603, described first
Electrode 604 and the second electrode 605 are square sheet.First cooling fin 602 and second cooling fin 603
Shape, size are all the same.Shape, the size of the first electrode 604 and the second electrode 605 are all the same.Described first dissipates
The width of backing 602, the first electrode 604 width and the PTC heating sheet 601 it is of same size；First heat dissipation
The length of piece 602 is the sum of the first electrode 604, the second electrode 605 and length of the PTC heating sheet 601.
That is, the PTC heating sheet 601, the first cooling fin 602, the second cooling fin 603, first electrode 604 and 605 groups of second electrode
The cube for synthesizing a regular shape facilitates plating insulating heat-conductive film and later period encapsulation.
In practical applications, the heated at constant temperature piece can be set to multiple.Multiple heated at constant temperature pieces are arranged side by side,
And the ventilation gap that there is gas supply stream to pass through between two neighboring heated at constant temperature piece, further increase heat dissipation, heat transfer property.It is multiple
PTC heating sheet in the heated at constant temperature piece is connected in parallel.
The thickness of the heated at constant temperature piece is preferably 2.2-2.5mm, effectively save occupied space.
The material of the first electrode 604 and the second electrode 605 is chemical nickel plating+silver, melt-blown metallic aluminium, printing aluminium
One of+silver or printing aluminium, conduct electricity very well, high reliablity.
The insulating heat-conductive film 606 is wrapped in around the heated at constant temperature piece.606 one side of insulating heat-conductive film plays
On the other hand the effect that intermediate PTC heating sheet 601 and shell 608 are insulated is played the role of transmitting heat.The insulating heat-conductive
The material of film 606 is one of silica gel, ceramics or the ceramics for being coated with plastic foil, and insulation high-temperature-resistant, thermal coefficient are high, is had
Good thermally conductive, heat-transfer effect.It is placed in shell 608, is adapted with 608 inner wall of shell, by PTC heating sheet with
It, can be by heat transfer that PTC heating sheet generates to shell 608 while heat conduction shell insulate.Therefore, PTC fever tablet generates
Heat effectively transfers heat to shell 608 by insulating heat-conductive film 606, passes to eventually by heat conduction shell 608 cold
But medium.
Preferably, the shell 608 is hollow structure open at one end.Wrap up the heated at constant temperature piece of the insulating heat-conductive film
And the spring 607 is arranged in the shell 608.The opening of the shell 608, institute is arranged in the spring 607
The length and width for stating spring 607 is greater than the length and width of the opening；The first surface of the spring 607 and the opening
Contact, the second surface of the spring are contacted with the heated at constant temperature piece for wrapping up the insulating heat-conductive film.Since the utility model mentions
The constant temperature heating device supplied is chiefly used in automobile heating, and automobile road conditions during traveling are complicated, is easy to appear violent shaking
With jolt, easily cause the damage of auto parts and components.Therefore in the utility model, institute is set in the opening of the shell 608
Spring 607 is stated, shock absorbing effect can be played, avoids motor racing from causing the damage of the PTC heating sheet, influences its heating
Performance.
Preferably, the steel or aluminium of the material selection good heat conduction effect of the shell 608.
Therefore, the heating that constant temperature heating device provided by the utility model is applied to automotive seat is adjusted, it can be effective
The heating power and heat transfer efficiency of chair heating device are improved, there are good heating properties.In addition, being mentioned using the utility model
Supply the automotive seat with constant temperature heating device, can according to the opening and closing of the temperature automatic control heating system of seat surface,
The automation control of seat heating is realized, is adjusted without artificial, improves the convenience and comfort of chair control.
Further, the automotive seat provided by the utility model with constant temperature heating device can also be according to seat surface
The height of temperature realizes that high temperature, medium temperature, the intelligence of low temperature, automation are adjusted.Fig. 4 adds to be provided by the utility model with constant temperature
The control circuit of the automotive seat embodiment two of thermal and the connection schematic diagram of heating system.The present embodiment two and embodiment one
The difference is that the setting to control circuit with heating system is different, rest part is all the same.
Referring to fig. 4, in the present embodiment, the control circuit 3 includes constant-current supply 301, voltage sensor 302 and voltage ratio
Compared with device 303.The voltage comparator 303 includes first voltage comparator 304, second voltage comparator 305 and tertiary voltage
Comparator 306.
The relay 5 includes the first relay 501, the second relay 502 and third relay 503；The constant temperature adds
Thermal 6 includes the first constant temperature heating device 609, the second constant temperature heating device 610 and third constant temperature heating device 611.
Since the PTC heating sheet 601 is the carbon fever tablet with ptc characteristics, is sutured and formed with conductive wire, it can be with
Required according to different resistance values and the parameter of heating temperature, adjust the phosphorus content of carbon fever tablet, carbon fever tablet area and
Basketry etc. meets technical requirements.In the present embodiment, by adjusting the phosphorus content of carbon fever tablet, carbon fever tablet area with
And basketry, so that the heating temperature of first constant temperature heating device 609 is higher than second constant temperature heating device 610
Heating temperature；The heating temperature of second constant temperature heating device 610 is higher than the heating temperature of the third constant temperature heating device 611
Degree.It is well known that people feels that most comfortable temperature is 20 DEG C to 25 DEG C.More than 28 DEG C, people will feel scorching；And it is lower than 14
DEG C, people will feel " cold ", therefore seat temperature is preferably controlled between 18 DEG C to 25 DEG C.General compartment inside and outside temperature difference is 10
It is advisable within DEG C consistent with refrigerator temperature Principles of Regulation, when temperature is lower outside compartment, corresponds to and open low-temperature heat, in compartment
It is corresponding to open high-temperature heating when temperature is higher, not only passenger will not be made not feel good because internal-external temperature difference is excessive, but also can maximum journey
Degree saves electric energy.When needing high temperature shelves to heat, first constant temperature heating device 609 is opened；When needing medium temperature shelves to heat,
Open second constant temperature heating device 610；When needing low temperature shelves to heat, the third constant temperature heating device 611 is opened.
By being introduced above it is found that the resistance value of the NTC temperature sensor 2 can be fast when the temperature of seat surface reduces
Speed increases, and corresponding voltage also increases rapidly；When the temperature of seat surface is lower than temperature threshold, corresponding voltage is higher than
Voltage threshold can control open the heating system progress seat heating at this time.According to this principle, it can further be arranged three
Shelves temperature threshold is heated at high temperature controlling the heating system, medium temperature heating and low-temperature heat.Third gear temperature threshold (first
Temperature threshold, second temperature threshold value and third temperature threshold) respectively correspond three-gear voltage threshold value, respectively first voltage threshold value,
Second voltage threshold value and tertiary voltage threshold value.Wherein, the first temperature threshold is higher than second temperature threshold value, and second temperature threshold value is higher than
Third temperature threshold, corresponding, the first voltage threshold value is lower than the second voltage threshold value；The second voltage threshold value is lower than
The tertiary voltage threshold value.
The first input end of the first voltage comparator 304 is connect with the voltage sensor 302, the second input termination
Enter first voltage threshold value, the size for the voltage and first voltage threshold value.The output of the first voltage comparator
It is end, the normally closed switch K2 of second relay, the normally closed switch K3 of the third relay, first relay, described
First constant temperature heating device is sequentially connected.When seat surface temperature is lower than the first temperature threshold, the NTC temperature sensor
Resistance value is greater than first resistor threshold value, corresponding, and the voltage is greater than the first voltage threshold value, the first voltage ratio at this time
High level is exported compared with device 304.When the first voltage comparator 304 exports high level, first relay 501 connects institute
It states the first constant temperature heating device 609 and carries out the heating of high temperature shelves.When the voltage is less than the first voltage threshold value, seat is indicated
Temperature is not below temperature threshold, and without opening heating device, the first voltage comparator 304 exports low level at this time, described
First relay 501 turns off first constant temperature heating device, and first constant temperature heating device stops heating.
The first input end of the second voltage comparator 305 is connect with the voltage sensor 302, the second input termination
Enter second voltage threshold value, the size for the voltage and second voltage threshold value.The output of the second voltage comparator
End, the normally closed switch K3 of the third relay, second relay, second constant temperature heating device are sequentially connected.When
Seat surface temperature further decreases, and when being lower than second temperature threshold value, the voltage is greater than the second voltage threshold value, institute at this time
It states second voltage comparator 305 and exports high level.When the second voltage comparator 305 export high level when, described second after
Electric appliance 502 connects second constant temperature heating device 610 and carries out the heating of medium temperature shelves.When second relay 502 is connected, institute
The normally closed switch K2 for stating the second relay 502 is disconnected, therefore first relay 501 will not act.When the voltage is less than
When the second voltage threshold value, the second voltage comparator 305 exports low level, and second relay 502 disconnects, at this time
The normally closed switch K2 of second relay 502 is closed, and will not influence the movement of first relay 501.
The first input end of the tertiary voltage comparator 306 is connect with the voltage sensor 302, the second input termination
Enter tertiary voltage threshold value, the size for the voltage and tertiary voltage threshold value.The tertiary voltage comparator 306 it is defeated
Outlet, the third relay 503, the third constant temperature heating device 611 are sequentially connected.When seat surface temperature further drops
Low, when being lower than third temperature threshold, the voltage is greater than the tertiary voltage threshold value, the tertiary voltage comparator 306 at this time
Export high level.When the tertiary voltage comparator 306 exports high level, the third relay 503 connects the third
Constant temperature heating device 611 carries out the heating of low temperature shelves.When the third relay 503 connect when, the third relay 503 it is normal
Make and break is closed K3 and is disconnected, therefore first relay 501 and second relay 502 will not act.When the voltage is small
When the tertiary voltage threshold value, the tertiary voltage comparator 306 exports low level, and the third relay 503 is disconnected at this time
It opens, the normally closed switch K3 closure of the third relay 503 will not influence first relay 501 and second relay
The movement of device 502.
As it can be seen that the automotive seat provided by the utility model with constant temperature heating device can be according to seat surface temperature
Height realizes the intelligent automatic adjusting that high temperature, medium temperature, low temperature shelves heat, and further improves the comfort of seat.
Specific case used herein is expounded the principles of the present invention and embodiment, above embodiments
Explanation be merely used to help understand the method and its core concept of the utility model；Meanwhile for the general technology of this field
Personnel, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.In conclusion
The content of the present specification should not be construed as a limitation of the present invention.
Claims (7)
1. a kind of automotive seat with constant temperature heating device, which is characterized in that the automotive seats with constant temperature heating device
Chair includes: seat, temperature sensor, control circuit and heating system；
The temperature sensor is arranged in the seat surface, for detecting the temperature of the seat surface；
The control circuit is arranged inside the seat, connect with the temperature sensor, for being generated according to the temperature
Computer heating control instruction；
The heating system is arranged inside the seat；The heating system is connect with the control circuit, for according to institute
It states computer heating control instruction and opens or closes the heating system；The heating system includes relay and constant temperature heating device；Institute
Stating constant temperature heating device includes heated at constant temperature piece, insulating heat-conductive film, spring and shell；
The insulating heat-conductive film is wrapped in around the heated at constant temperature piece；The shell is hollow structure open at one end；Package
The heated at constant temperature piece and the spring of the insulating heat-conductive film are arranged in the shell；The spring is arranged in the shell
The opening of body, the length and width of the spring are greater than the length and width of the opening；The first surface of the spring with
The opening contact, the second surface of the spring are contacted with the heated at constant temperature piece for wrapping up the insulating heat-conductive film；
The heated at constant temperature piece is made of PTC heating sheet, the first cooling fin, the second cooling fin, first electrode and second electrode；
The PTC heating sheet is the carbon fever tablet with ptc characteristics；Two electrodes of the PTC heating sheet are electric with described first respectively
Pole and second electrode electrical connection；The first surface of the PTC heating sheet is connect with first cooling fin；The PTC adds
The second surface of backing is connect with second cooling fin.
2. automotive seat according to claim 1, which is characterized in that the PTC heating sheet, the first electrode and institute
Second electrode is stated to be formed as one by hot compression.
3. automotive seat according to claim 1, which is characterized in that the PTC heating sheet, first cooling fin, institute
Stating the second cooling fin, the first electrode and the second electrode is square shape sheet；First cooling fin and described second
Shape, the size of cooling fin are all the same；Shape, the size of the first electrode and the second electrode are all the same；Described first
The width of cooling fin, the first electrode width and the PTC heating sheet it is of same size；The length of first cooling fin
For the sum of the first electrode, the second electrode and length of the PTC heating sheet.
4. automotive seat according to claim 1, which is characterized in that the heated at constant temperature piece with a thickness of 2.2-2.5mm.
5. automotive seat according to claim 1, which is characterized in that the heated at constant temperature piece is multiple；Multiple perseverances
Warm heating sheet is arranged side by side, and the ventilation gap that there is gas supply stream to pass through between two neighboring heated at constant temperature piece；Multiple perseverances
PTC heating sheet in warm heating sheet is connected in parallel.
6. automotive seat according to claim 1, which is characterized in that the temperature sensor is NTC temperature sensor, institute
Stating the resistance value of NTC temperature sensor, as the temperature rises and declines rapidly.
7. automotive seat according to claim 6, which is characterized in that the control circuit includes constant-current supply, voltage biography
Sensor and voltage comparator；
The constant-current supply is connect with the NTC temperature sensor, for powering for the NTC temperature sensor；
The voltage sensor is connect with the NTC temperature sensor, for measuring the voltage of the NTC temperature sensor；
The first input end of the voltage comparator is connect with the voltage sensor, and the second input terminal accesses voltage threshold, is used
In the size of the voltage and voltage threshold；When the voltage is greater than the voltage threshold, high level is exported；When described
When voltage is less than the voltage threshold, low level is exported；
The relay is connect with the output end of the voltage comparator；The relay is normally opened relay；
When the voltage comparator exports high level, the relay closure connects the constant temperature heating device；
When the voltage comparator exports low level, the relay disconnects the constant temperature heating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820911794.0U CN209051325U (en) | 2018-06-13 | 2018-06-13 | A kind of automotive seat with constant temperature heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820911794.0U CN209051325U (en) | 2018-06-13 | 2018-06-13 | A kind of automotive seat with constant temperature heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209051325U true CN209051325U (en) | 2019-07-02 |
Family
ID=67046114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820911794.0U Active CN209051325U (en) | 2018-06-13 | 2018-06-13 | A kind of automotive seat with constant temperature heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209051325U (en) |
-
2018
- 2018-06-13 CN CN201820911794.0U patent/CN209051325U/en active Active
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