CN206734010U - A kind of electric automobile air conditioner PTC heating systems of high security - Google Patents
A kind of electric automobile air conditioner PTC heating systems of high security Download PDFInfo
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- CN206734010U CN206734010U CN201720541094.2U CN201720541094U CN206734010U CN 206734010 U CN206734010 U CN 206734010U CN 201720541094 U CN201720541094 U CN 201720541094U CN 206734010 U CN206734010 U CN 206734010U
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- electric automobile
- air conditioner
- heating systems
- automobile air
- ptc
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Abstract
Electric automobile field is the utility model is related to, discloses a kind of electric automobile air conditioner PTC heating systems of high security.In electric automobile air conditioner PTC heating systems; not only can be by configuring closed type temperature switch, temperature sensor and two normal-open type relays; the power supply positive pole to ptc heater and negative pole carry out on/off control respectively; realize the dual overheat protector to ptc heater; improve safety in utilization; also the fault detect to PTC heating systems can be realized, by introducing entire car controller to carry out active protection.At the same time it can also carry out in real time and accurately detecting to the temperature inside ptc heater, make the accuracy of overtemperature protection higher.Further, since when ptc heater is stopped, PTC power supply positive poles and negative power supply are cut off, ptc heater can also be reduced and occur the risk leaked electricity when not working, further lift security.
Description
Technical field
Electric automobile field is the utility model is related to, in particular it relates to which a kind of electric automobile air conditioner PTC of high security adds
Hot systems.
Background technology
In existing electric automobile, its air-conditioning heating system typically uses PTC (Positive Temperature
Coefficient, positive temperature coefficient) heater, HVAC will be embedded in as the ptc heater of high voltage operations device
Inside the air channel of (Heating, Ventilation and Air Conditioning, heating ventilation and air adjustment) system,
Realize hot blast feeding.To avoid electric automobile air conditioner heating system from the problem of superheated occur, conventional meanses are to use temperature
Switch to carry out overtemperature protection, but in the work of blower fan gentle breeze or calm failure, if temperature switch breaks down, PTC adds
Hot device continues to heating work, and makes the surface temperature of ptc heater inner fin continue to raise, for example, up to 200 DEG C or
It is higher, and then easily cause HVAC system housing deformation and ablation situation occur, or even trigger the security incident of fire etc..
Utility model content
For the safety problem that the overtemperature protection present in foregoing existing electric automobile air conditioner heating system is ineffective, this practicality
A kind of new electric automobile air conditioner PTC heating systems for providing high security.
The technical solution adopted in the utility model, there is provided a kind of electric automobile air conditioner PTC heating systems of high security,
Including ptc heater, entire car controller, the first normal-open type relay and the second normal-open type relay, wherein, add in the PTC
Closed type temperature switch and temperature sensor are built-in with hot device；The contact branch road both ends difference of first normal-open type relay
Electrically connect the power supply positive pole and heating power supply positive pole of the ptc heater, the path of winding two of first normal-open type relay
End is electrically connected one end and the ground connection of the closed type temperature switch, and the other end electrical connection of the closed type temperature switch is driven
Dynamic voltage；The contact branch road both ends of second normal-open type relay be electrically connected the ptc heater power supply negative pole and
Heating power supply negative pole, the path of winding both ends of second normal-open type relay are electrically connected the level of the entire car controller
Control terminal and the driving voltage；The temperature sensor electrically connects the entire car controller.
Optimization, include the automobile instrument and/or audible-visual annunciator of the electrical connection entire car controller.
Optimization, the both ends export line of the closed type temperature switch uses what is coated by silicon rubber glass fibre sleeve
High temperature resistant line.
Optimization, the export line of the temperature sensor uses the high temperature resistant line coated by silicon rubber glass fibre sleeve.
Optimization, the temperature sensor uses model MF5A NTC type thermistors, and makes the NTC types temperature-sensitive electric
The both ends of resistance are electrically connected the two pins of the entire car controller.Further optimize, the closed type temperature switch and institute
The both ends export line for stating temperature sensor is concentrated and is fitted in model AMP/282106 four core plug connectors.
Optimization, the closed type temperature switch uses model KSD9700 temperature switch.
To sum up, using the electric automobile air conditioner PTC heating systems of high security provided by the utility model, have as follows
Beneficial effect：(1) in electric automobile air conditioner PTC heating systems, by configure closed type temperature switch, temperature sensor and
Two normal-open type relays, the power supply positive pole to ptc heater and negative pole on/off control can be carried out respectively, so as to realize to PTC
The dual overheat protector of heater, improve safety in utilization；(2) by introducing entire car controller, it can also realize and PTC is heated
The fault detect of system, to remind driver by automobile instrument or audible-visual annunciator in time, carry out active protection；(3) may be used
To carry out in real time and accurately detecting to the temperature inside ptc heater, make the accuracy of overtemperature protection higher；(4) due to
When ptc heater is stopped, PTC power supply positive poles and negative power supply are cut off, ptc heater can be reduced and when not working
The risk now leaked electricity, further lifts security；(5) the electric automobile air conditioner PTC heating systems also have device cost it is low,
The advantages that circuit is simple and is easily achieved, is easy to actual promotion and application.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of electric automobile air conditioner PTC heating systems provided by the utility model.
Embodiment
Hereinafter with reference to accompanying drawing, the electronic of high security provided by the utility model is described in detail by way of example
Air conditioning for automobiles PTC heating systems.Herein it should be noted that being used to help understand this reality for the explanation of these way of example
With new, but do not form to restriction of the present utility model.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, expression may have three kinds of passes
System, for example, A and/or B, can be represented：Individualism A, individualism B, while tri- kinds of situations of A and B, the terms be present
"/and " it is another affiliated partner relation of description, expression may have two kinds of relations, for example, A/ and B, can be represented：Individually deposit
In A, two kinds of situations of individualism A and B, in addition, character "/" herein, it is that a kind of "or" is closed to typically represent forward-backward correlation object
System.
Embodiment one
Fig. 1 shows the structural representation of electric automobile air conditioner PTC heating systems provided by the utility model.The present embodiment
The electric automobile air conditioner PTC heating systems of the high security provided, including it is ptc heater, entire car controller, first normally opened
Type relay and the second normal-open type relay, wherein, closed type temperature switch is built-in with the ptc heater and temperature passes
Sensor；The contact branch road both ends of first normal-open type relay be electrically connected the ptc heater power supply positive pole HV+ and
Heating power supply positive pole VHV+, the path of winding both ends of first normal-open type relay are electrically connected the closed type temperature and opened
One end of pass and ground connection, the other end electrical connection driving voltage VCC of the closed type temperature switch；The second open type relay
The contact branch road both ends of device are electrically connected the power supply negative pole HV- and heating power supply negative pole VHV- of the ptc heater, and described
The path of winding both ends of two normal-open type relays are electrically connected the Automatic level control end VC of the entire car controller and the driving
Voltage VCC；The temperature sensor electrically connects the entire car controller.
As shown in figure 1, in the structure of the electric automobile air conditioner PTC heating systems, the heating power supply positive pole VHV+
With the two poles of the earth of the heating power supply negative pole VHV- as heating power supply (can be, but not limited to as automobile power source), for be described
The heating work of ptc heater provides electric energy and supported；The driving voltage VCC is used to provide high level, for example, 5V level or
3.3V level.
The ptc heater is used in the case of being powered at the positive and negative the two poles of the earth of its high pressure, carries out heating operation.The vehicle
Controller is additionally operable to temperature survey of the instantaneous acquiring from the temperature sensor in addition to completing basic whole automobile control function
As a result, its Automatic level control end VC level and according to temperature measurement result is controlled immediately.First normal-open type relay and institute
The second normal-open type relay is stated for performing power supply positive pole and negative pole progress on/off control to the ptc heater respectively.Institute
Closed type temperature switch is stated for the internal temperature according to ptc heater, is performed at high temperature (such as higher than 145 ± 5 DEG C) disconnected
Operation is opened, closed procedure is performed at low temperature (such as less than 90 ± 15 DEG C), to control first normal-open type relay
Working condition；The closed type temperature switch can be, but not limited to the temperature switch using model KSD9700, its operating temperature
For 145 ± 5 DEG C, recovery temperature is 90 ± 15 DEG C, rated voltage AC250V, maximum operating currenbt 5A.The temperature sensor is used
Monitored in real time in the internal temperature to the ptc heater, and testing result is passed into the entire car controller；It is described
Temperature sensor can be, but not limited to using model MF5A NTC (Negat ive Temperature Coefficient,
Negative temperature coefficient) type thermistor (its is pressure-resistant condition：5mA, 1500V and 5S；Precision is R25=5K Ω ± 1%；B25/50=
3750K ± 1%), and the both ends of the NTC type thermistors is electrically connected the two pins (T1, T2) of the entire car controller,
As shown in Figure 1.
The operation principle of the electric automobile air conditioner PTC heating systems can be, but not limited to as follows：(1) when the PTC adds
When the internal temperature of hot device is normal, closed type temperature switch closure, first normal-open type relay and described second normal
The contact branch road of open form relay also closes；(2) it is described when the internal temperature of the ptc heater is increased to 145 ± 5 DEG C
Closed type temperature switch performs disconnection action, makes the path of winding power down of first normal-open type relay (because its both ends is all
Low level), and then the contact branch road of corresponding relay can be disconnected, while the entire car controller is knowing the ptc heater
Internal temperature be higher than 145 DEG C when, can make its Automatic level control end VC export high level, equally make second normal-open type relay
Path of winding power down (because its both ends is all high level), and then the contact branch road of corresponding relay can be disconnected, it is possible thereby to point
Other power supply positive pole and negative pole to the ptc heater turns off control, realizes the dual excess temperature guarantor to the ptc heater
Shield, improve safety in utilization；(3) when the internal temperature of the ptc heater is reduced to 90 ± 15 DEG C, the closed type temperature
Switch closes again, makes the path of winding upper electricity, and then turn on touching for corresponding relay again of first normal-open type relay
Point branch road, while the entire car controller makes its Automatic level control when the internal temperature for knowing the ptc heater is less than 85 DEG C
VC output low levels are held, equally make the path of winding upper electricity, and then turn on corresponding relay again of second normal-open type relay
Contact branch road, thus the positive and negative polarities of the ptc heater can be made to be powered again, and carry out reheating operation.
In system heating process, if the closed type temperature switch fails, the entire car controller is still using temperature
Sensor knows the internal temperature of the ptc heater, and when internally temperature is higher than 145 DEG C, makes its Automatic level control end VC defeated
Go out high level, and then disconnect the power supply negative pole connection of the ptc heater, the ptc heater power down is not worked.
Further, if the entire car controller detects that the temperature sensor also fails, its Automatic level control end VC still can be made defeated
Go out high level, equally disconnect the power supply negative pole connection of the ptc heater, the ptc heater power down is not worked.Thus
, not only can be normal by configuring closed type temperature switch, temperature sensor and two in electric automobile air conditioner PTC heating systems
Open form relay, the power supply positive pole to ptc heater and negative pole progress on/off control, are realized to the dual of ptc heater respectively
Overheat protector, safety in utilization is improved, can also realize the fault detect to PTC heating systems by introducing entire car controller, with
Just active protection is carried out.At the same time it can also carry out in real time and accurately detecting to the temperature inside ptc heater, protect overheat
The accuracy of shield is higher.Further, since when ptc heater is stopped, PTC power supply positive poles and negative power supply are cut off, also
Ptc heater can be reduced and occur the risk leaked electricity when not working, further lift security.
Optimization, include the automobile instrument and/or audible-visual annunciator of the electrical connection entire car controller.As shown in figure 1,
Internal temperature values that can be to the current ptc heater of driver's real-time exhibition by configuring the automobile instrument or other failures
Warning message；By configuring the audible-visual annunciator, can also be carried out when the entire car controller finds fuser malfunction occur
Sound and light alarm.
Optimization, the both ends export line of the closed type temperature switch can be, but not limited to use by silicon rubber glass fibers
Tie up the high temperature resistant line of sleeve pipe cladding.
Optimization, the export line of the temperature sensor can be, but not limited to use and be coated by silicon rubber glass fibre sleeve
High temperature resistant line.
Optimization, the both ends export line of the closed type temperature switch and the temperature sensor, which is concentrated, is fitted in model
For in AMP/282106 four core plug connectors.
To sum up, the electric automobile air conditioner PTC heating systems for the high security that the present embodiment is provided, have following beneficial to effect
Fruit：(1) it is normally opened by configuring closed type temperature switch, temperature sensor and two in electric automobile air conditioner PTC heating systems
Type relay, the power supply positive pole to ptc heater and negative pole on/off control can be carried out respectively, so as to realize to ptc heater
Dual overheat protector, improve safety in utilization；(2) by introducing entire car controller, can also realize to PTC heating systems
Fault detect, to remind driver by automobile instrument or audible-visual annunciator in time, carry out active protection；(3) can be to PTC
The temperature of heater body in real time and accurately detect, and makes the accuracy of overtemperature protection higher；(4) due to being heated in PTC
When device is stopped, PTC power supply positive poles and negative power supply are cut off, ptc heater can be reduced and leaked electricity when not working
Risk, further lift security；(5) the electric automobile air conditioner PTC heating systems also have that device cost is low, circuit is simple
List and the advantages that being easily achieved, it is easy to actual promotion and application.
As described above, it can preferably realize the utility model.For a person skilled in the art, it is new according to this practicality
The teaching of type, design the electric automobile air conditioner PTC heating systems of various forms of high securities and do not need creative labor
It is dynamic.These embodiments are changed in the case where not departing from principle of the present utility model and spirit, change, replace, integrated
Still fallen within modification in the scope of protection of the utility model.
Claims (7)
1. the electric automobile air conditioner PTC heating systems of a kind of high security, it is characterised in that including ptc heater, full-vehicle control
Device, the first normal-open type relay and the second normal-open type relay, wherein, closed type temperature is built-in with the ptc heater
Switch and temperature sensor；
The contact branch road both ends of first normal-open type relay are electrically connected the power supply positive pole (HV+) of the ptc heater
With heating power supply positive pole (VHV+), the path of winding both ends of first normal-open type relay are electrically connected the closed type temperature
Spend one end and the ground connection of switch, the other end electrical connection driving voltage (VCC) of the closed type temperature switch；
The contact branch road both ends of second normal-open type relay are electrically connected the power supply negative pole (HV-) of the ptc heater
With heating power supply negative pole (VHV-), the path of winding both ends of second normal-open type relay are electrically connected the full-vehicle control
The Automatic level control end (VC) of device and the driving voltage (VCC)；
The temperature sensor electrically connects the entire car controller.
2. the electric automobile air conditioner PTC heating systems of a kind of high security as claimed in claim 1, it is characterised in that also wrap
Include the automobile instrument and/or audible-visual annunciator for electrically connecting the entire car controller.
3. the electric automobile air conditioner PTC heating systems of a kind of high security as claimed in claim 1, it is characterised in that described
The both ends export line of closed type temperature switch is using the high temperature resistant line coated by silicon rubber glass fibre sleeve.
4. the electric automobile air conditioner PTC heating systems of a kind of high security as claimed in claim 1, it is characterised in that described
The export line of temperature sensor uses the high temperature resistant line coated by silicon rubber glass fibre sleeve.
5. the electric automobile air conditioner PTC heating systems of a kind of high security as claimed in claim 1, it is characterised in that described
Temperature sensor uses model MF5A NTC type thermistors, and the both ends of the NTC type thermistors is electrically connected institute
State the two pins (T1, T2) of entire car controller.
6. the electric automobile air conditioner PTC heating systems of a kind of high security as claimed in claim 5, it is characterised in that described
The both ends export line of closed type temperature switch and the temperature sensor is fitted in model AMP/282106 four cores by concentrating
In plug connector.
7. the electric automobile air conditioner PTC heating systems of a kind of high security as claimed in claim 1, it is characterised in that described
Closed type temperature switch uses model KSD9700 temperature switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720541094.2U CN206734010U (en) | 2017-05-16 | 2017-05-16 | A kind of electric automobile air conditioner PTC heating systems of high security |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720541094.2U CN206734010U (en) | 2017-05-16 | 2017-05-16 | A kind of electric automobile air conditioner PTC heating systems of high security |
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| Publication Number | Publication Date |
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| CN206734010U true CN206734010U (en) | 2017-12-12 |
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| CN201720541094.2U Active CN206734010U (en) | 2017-05-16 | 2017-05-16 | A kind of electric automobile air conditioner PTC heating systems of high security |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110758058A (en) * | 2019-11-28 | 2020-02-07 | 东风商用车有限公司 | PTC multiple over-temperature protection system of electric automobile |
| CN113447227A (en) * | 2021-06-08 | 2021-09-28 | 北京联合大学 | Method for simulating impact load of insulation paper of traction transformer |
-
2017
- 2017-05-16 CN CN201720541094.2U patent/CN206734010U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110758058A (en) * | 2019-11-28 | 2020-02-07 | 东风商用车有限公司 | PTC multiple over-temperature protection system of electric automobile |
| CN113447227A (en) * | 2021-06-08 | 2021-09-28 | 北京联合大学 | Method for simulating impact load of insulation paper of traction transformer |
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