CN206734006U - A kind of electric automobile air conditioner PTC heating systems for realizing two overheat protection - Google Patents
A kind of electric automobile air conditioner PTC heating systems for realizing two overheat protection Download PDFInfo
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- CN206734006U CN206734006U CN201720541093.8U CN201720541093U CN206734006U CN 206734006 U CN206734006 U CN 206734006U CN 201720541093 U CN201720541093 U CN 201720541093U CN 206734006 U CN206734006 U CN 206734006U
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- electric automobile
- air conditioner
- heating systems
- automobile air
- ptc heating
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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 for realizing two overheat protection.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; power supply positive pole that can be to ptc heater carries out dual on/off control; so as to 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.In addition, the electric automobile air conditioner PTC heating systems also have the advantages that device cost is low, circuit is simple and is easily achieved, it is easy to actual promotion and application.
Description
Technical field
Electric automobile field is the utility model is related to, in particular it relates to a kind of electric automobile for realizing two overheat protection
Air-conditioning PTC heating 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
It is new to provide a kind of electric automobile air conditioner PTC heating systems for realizing two overheat protection.
The technical solution adopted in the utility model, provide a kind of electric automobile air conditioner PTC for realizing two overheat protection
Heating system, including ptc heater, entire car controller and normal-open type relay, wherein, it is built-in with the ptc heater
Closed type temperature switch and temperature sensor；The contact branch road both ends of the normal-open type relay are electrically connected the PTC and added
The power supply positive pole and heating power supply positive pole of hot device, the path of winding both ends of the normal-open type relay are electrically connected described normally closed
One end of type temperature switch and the Automatic level control end of the entire car controller, the other end electrical connection of the closed type temperature switch
Driving voltage；The power supply negative pole electrical connection heating power supply negative pole of the ptc heater, the temperature sensor electrical connection are described whole
Vehicle 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 it is provided by the utility model realize two overheat protection electric automobile air conditioner PTC heating systems,
Have the advantages that：(1) in electric automobile air conditioner PTC heating systems, by configuring closed type temperature switch, temperature
Sensor and two normal-open type relays, power supply positive pole that can be to ptc heater carries out dual on/off control, so as to realize
To the dual overheat protector of ptc heater, safety in utilization is improved；(2) by introducing entire car controller, can also realize pair
The fault detect of PTC heating systems, to remind driver by automobile instrument or audible-visual annunciator in time, carry out active guarantor
Shield；(3) temperature inside ptc heater can be carried out in real time and accurately detecting, makes the accuracy of overtemperature protection higher；
(4) the electric automobile air conditioner PTC heating systems also have the advantages that device cost is low, circuit is simple and is easily achieved, and are 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, described in detail by way of example and provided by the utility model realize that two overheat is protected
The electric automobile air conditioner PTC heating systems of shield.Herein it should be noted that being used to help for the explanation of these way of example
Understand the utility model, 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 for realizing two overheat protection provided, including ptc heater, entire car controller
And normal-open type relay, wherein, closed type temperature switch and temperature sensor are built-in with the ptc heater；It is described normal
The contact branch road both ends of open form relay are electrically connected the power supply positive pole HV+ and heating power supply positive pole VHV of the ptc heater
+, the path of winding both ends of the normal-open type relay are electrically connected one end of the closed type temperature switch and the vehicle
The Automatic level control end VC of controller, the other end electrical connection driving voltage VCC of the closed type temperature switch；The PTC heating
The power supply negative pole HV- electrical connection heating power supply negative pole VHV- of device, the temperature sensor electrically connect 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.The normal-open type relay is used to perform
Power supply positive pole to the ptc heater carries out on/off control.The closed type temperature switch is used for according to ptc heater
Internal temperature, opening operation is performed at high temperature (such as higher than 145 ± 5 DEG C), held at low temperature (such as less than 90 ± 15 DEG C)
Row closed procedure, to control the working condition of first normal-open type relay；The closed type temperature switch can with but not
It is limited to the temperature switch using model KSD9700, its operating temperature is 145 ± 5 DEG C, and recovery temperature is 90 ± 15 DEG C, specified
Voltage AC250V, maximum operating currenbt 5A.The temperature sensor is used to carry out in real time the internal temperature of the ptc heater
Monitoring, and testing result is passed into the entire car controller；The temperature sensor can be, but not limited to use model
MF5A NTC (Negative 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 make the NTC type thermistors
Both ends are 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, the closed type temperature switch closure, the contact branch road of the normal-open type relay also closes；
(2) when the internal temperature of the ptc heater is increased to 145 ± 5 DEG C, the closed type temperature switch performs disconnection action,
Make the path of winding power down (because its both ends is all low level or high level) of the normal-open type relay, and then it is normally opened to disconnect this
The contact branch road of type relay, while the entire car controller is higher than 145 DEG C in the internal temperature for knowing the ptc heater
When, its Automatic level control end VC can be made to export high level, in the case that the closed type temperature switch fails, can also be made
The path of winding power down (because its both ends is all high level) of the normal-open type relay, and then doubly the PTC can be heated
The power supply positive pole of device turns off control, realizes the dual overheat protector to the ptc heater, improves 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, while institute
Entire car controller is stated when the internal temperature for knowing the ptc heater is less than 85 DEG C, its Automatic level control end VC is exported low electricity
It is flat, equally make the path of winding upper electricity, and then turn on the contact branch road of the normal-open type relay again of the normal-open type relay, by
This can make the positive and negative polarities of the ptc heater 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 positive 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 positive 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, power supply positive pole that can be to ptc heater carries out dual on/off control, so as to realize to ptc heater
Dual overheat protector, safety in utilization is improved, can also realize the failure inspection to PTC heating systems by introducing entire car controller
Survey, 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, made
The accuracy of Thermal protection is higher.In addition, the electric automobile air conditioner PTC heating systems also have, device cost is low, circuit is simple
The advantages that with being easily achieved, it is easy to actual promotion and application.
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, what the present embodiment was provided realizes the electric automobile air conditioner PTC heating systems of two overheat protection, has such as
Lower beneficial effect：(1) in electric automobile air conditioner PTC heating systems, by configuring closed type temperature switch, temperature sensor
With two normal-open type relays, power supply positive pole that can be to ptc heater carries out dual on/off control, PTC is added so as to realize
The dual overheat protector of hot device, improve safety in utilization；(2) by introducing entire car controller, it can also realize and system is heated to PTC
The fault detect of system, to remind driver by automobile instrument or audible-visual annunciator in time, carry out active protection；(3) can be with
Temperature inside ptc heater is carried out in real time and accurately to detect, makes the accuracy of overtemperature protection higher；(4) it is described electronic
Air conditioning for automobiles PTC heating systems also have the advantages that device cost is low, circuit is simple and is easily achieved, and are easy to actual popularization and answer
With.
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 various forms of electric automobile air conditioner PTC heating systems for realizing two overheat protection and need not create
The work for the property made.These embodiments are changed in the case where not departing from principle of the present utility model and spirit, change, replaced
Change, integrate and modification is still fallen within the scope of protection of the utility model.
Claims (7)
1. it is a kind of realize two overheat protection electric automobile air conditioner PTC heating systems, it is characterised in that including ptc heater,
Entire car controller and normal-open type relay, wherein, closed type temperature switch and TEMP are built-in with the ptc heater
Device；
The contact branch road both ends of the normal-open type relay are electrically connected the power supply positive pole (HV+) of the ptc heater and added
Thermoelectric generator positive pole (VHV+), the path of winding both ends of the normal-open type relay are electrically connected the closed type temperature switch
One end and the Automatic level control end (VC) of the entire car controller, the other end electrical connection driving voltage of the closed type temperature switch
(VCC)；
Power supply negative pole (HV-) the electrical connection heating power supply negative pole (VHV-) of the ptc heater, the temperature sensor electrical connection
The entire car controller.
2. a kind of electric automobile air conditioner PTC heating systems for realizing two overheat protection as claimed in claim 1, its feature exist
In including the automobile instrument and/or audible-visual annunciator of the electrical connection entire car controller.
3. a kind of electric automobile air conditioner PTC heating systems for realizing two overheat protection as claimed in claim 1, its feature exist
In the both ends export line of the closed type temperature switch is using the high temperature resistant line coated by silicon rubber glass fibre sleeve.
4. a kind of electric automobile air conditioner PTC heating systems for realizing two overheat protection as claimed in claim 1, its feature exist
In the export line of the temperature sensor uses the high temperature resistant line coated by silicon rubber glass fibre sleeve.
5. a kind of electric automobile air conditioner PTC heating systems for realizing two overheat protection as claimed in claim 1, its feature exist
In the temperature sensor uses model MF5A NTC type thermistors, and distinguishes the both ends of the NTC type thermistors
Electrically connect the two pins (T1, T2) of the entire car controller.
6. a kind of electric automobile air conditioner PTC heating systems for realizing two overheat protection as claimed in claim 5, its feature exist
In the both ends export line of the closed type temperature switch and the temperature sensor, which is concentrated, is fitted in model AMP/282106
Four core plug connectors in.
7. a kind of electric automobile air conditioner PTC heating systems for realizing two overheat protection as claimed in claim 1, its feature exist
In the closed type temperature switch uses model KSD9700 temperature switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720541093.8U CN206734006U (en) | 2017-05-16 | 2017-05-16 | A kind of electric automobile air conditioner PTC heating systems for realizing two overheat protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720541093.8U CN206734006U (en) | 2017-05-16 | 2017-05-16 | A kind of electric automobile air conditioner PTC heating systems for realizing two overheat protection |
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| Publication Number | Publication Date |
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| CN206734006U true CN206734006U (en) | 2017-12-12 |
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Cited By (4)
| 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 |
| CN112596558A (en) * | 2020-12-25 | 2021-04-02 | 航电中和山东医疗技术有限公司 | Heating pipe temperature monitoring device and method |
| CN112793383A (en) * | 2020-12-31 | 2021-05-14 | 镇江海姆霍兹传热传动***有限公司 | Electric vehicle and electric heating device thereof |
| 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 CN201720541093.8U patent/CN206734006U/en active Active
Cited By (5)
| 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 |
| CN112596558A (en) * | 2020-12-25 | 2021-04-02 | 航电中和山东医疗技术有限公司 | Heating pipe temperature monitoring device and method |
| CN112596558B (en) * | 2020-12-25 | 2022-06-28 | 航电中和山东医疗技术有限公司 | Heating pipe temperature monitoring device and method |
| CN112793383A (en) * | 2020-12-31 | 2021-05-14 | 镇江海姆霍兹传热传动***有限公司 | Electric vehicle and electric heating device thereof |
| 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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