CN106627038A - Heating switching circuit - Google Patents
Heating switching circuit Download PDFInfo
- Publication number
- CN106627038A CN106627038A CN201611179012.0A CN201611179012A CN106627038A CN 106627038 A CN106627038 A CN 106627038A CN 201611179012 A CN201611179012 A CN 201611179012A CN 106627038 A CN106627038 A CN 106627038A
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- CN
- China
- Prior art keywords
- switching tube
- poles
- diode
- switch circuit
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
- B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
- B60H1/2218—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters controlling the operation of electric heaters
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Resistance Heating (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The invention discloses a heating switching circuit which comprises three switching tubes Q1, Q2 and Q4, two resistors R1 and R2 and two heating elements A and B. An electrode C of the switching tube Q4 is connected with the positive electrode of a high-voltage battery. An electrode E of the switching tube Q4 is connected with one electric connecting end of the heating element A and one electric connecting end of the heating element B. The other electric connecting end of the heating element A is connected with an electrode C of the switching tube Q1. An electrode E of the switching tube Q1 is connected with one end of the resistor R1. The other electric connecting end of the heating element B is connected with an electrode C of the switching tube Q2. An electrode E of the switching tube Q2 is connected with one end of the resistor R2. The other end of the resistor R1 and the other end of the resistor R2 are connected with the negative electrode of the high-voltage battery. An electrode G of the switching tube Q1, an electrode G of the switching tube Q2 and an electrode G of the switching tube Q3 are all connected with a control chip. The heating switching circuit is low in production cost, and when one switching tube fails and a short circuit occurs, the heating element corresponding to the branch circuit still can work normally.
Description
Technical field
The present invention relates to the air heating apparatus used on a kind of automobile, are especially that one kind is used to control air plus hot charging
The heater switch circuit put.
Background technology
The heater switch circuit of prior art as shown in figure 1, heater switch electric routing switch pipe Q1, Q2, Q3, Q4, Q5,
Q6, heater element A, B, C, resistance R1, R2, R3 are formed by connecting.The heater switch circuit has three heater elements, in reality
Also there can be two heater elements in application process.During work, distinguish the G of controlling switch pipe extremely to control by microprocessor
Whether is the work of switching tube Q1, Q2, Q3, Q4, Q5, Q6, and then the working condition to heater element A, B, C is controlled.It is above-mentioned
The heater switch circuit of structure has the following disadvantages：When one switch tube failure short circuit when, due to same branch road also exist it is another
The switching tube of individual series connection, so the corresponding heater element of the branch road still can be controlled.But because it uses six switching tubes
Three heater elements (four switching tubes are control two heating elements) are controlled, therefore its production cost is higher.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of heater switch circuit, the circuit low production cost and when
During individual switch tube failure short circuit, the corresponding heater element of the branch road remains able to normal work.
The technical scheme is that, there is provided a kind of heater switch circuit, including three switching tubes Q1, Q2, Q4, two electricity
Resistance R1, R2, two heating elements A, B；The C poles of the switching tube Q4 are connected with the positive pole of high-tension battery；The E of the switching tube Q4
Pole is connected with an electric connecting terminal of heater element A, an electric connecting terminal of heater element B；Another electrical connection of the heater element A
End is connected with the C poles of switching tube Q1；The E poles of the switching tube Q1 are connected with one end of resistance R1；The heater element B's is another
Electric connecting terminal is connected with the C poles of switching tube Q2；The E poles of the switching tube Q2 are connected with one end of resistance R2；The resistance R1's
The other end, the other end of resistance R2 are connected with the negative pole of high-tension battery；The G poles of the switching tube Q1, the G poles of switching tube Q2, open
The G for closing pipe Q3 is extremely connected with control chip.
Described heater switch circuit also includes that one is used to that the induced-current that heater element is produced to be carried out water conservancy diversion to prevent
The diode D1 that switching tube Q1 is damaged, the anode of the diode D1 is connected with the C poles of switching tube Q1；The moon of the diode D1
Pole is connected with the positive pole of high-tension battery.
Described heater switch circuit also includes that one is used to that the induced-current that heater element is produced to be carried out water conservancy diversion to prevent
The diode D2 that switching tube Q2 is damaged, the anode of the diode D2 is connected with the C poles of switching tube Q2；The moon of the diode D2
Pole is connected with the positive pole of high-tension battery.
Described heater switch circuit also prevents from reversal connection high voltage power supply both positive and negative polarity to damage the two of switching tube Q1, Q2 including one
Pole pipe D4, the anode of diode D4 is connected with the negative pole of high-tension battery, the negative electrode of the diode D4 and the E of switching tube Q4
Pole connects.
After above structure, the present invention compared with prior art, with advantages below：
Heater switch circuit of the present invention by control chip come the conducting of controlling switch pipe Q1, Q2, Q4 with close, so as to control
The break-make of two heating elements A, B processed.When switching tube Q4 is damaged, switching tube Q4 is internally formed path, at this moment switching tube Q1, Q2
Conducting remains able to control the conducting of two heating elements A, B.And when switching tube Q1 is damaged, switching tube Q1 is internally formed path,
At this moment switching tube Q4 conductings remain able to control heater element A conductings.In the same manner, it is also such when switching tube Q2 is damaged.Therefore,
When the circuit is when tube failure short circuit is switched for one, the corresponding heater element of the branch road remains able to normal work.Existing skill
In art, four switching tubes are control two heating elements, and in this application, three switching tubes can control two heating units
Part, therefore reduce production cost relative to prior art.For the application, the heater element of control is more, and it reduces production
The effect of cost is more notable.
Further, described heater switch circuit also includes that one is used to lead the induced-current that heater element is produced
The diode D1 to prevent switching tube Q1 from damaging is flowed, the anode of the diode D1 is connected with the C poles of switching tube Q1；Two pole
The negative electrode of pipe D1 is connected with the positive pole of high-tension battery.Diode D1's arranges the induced electricity conductance that can be produced heater element
Go out, so as to prevent damaging switching tube Q1, and then ensure that the functional reliability of the application heater switch circuit.
Further, described heater switch circuit also includes that one is used to lead the induced-current that heater element is produced
The diode D2 to prevent switching tube Q2 from damaging is flowed, the anode of the diode D2 is connected with the C poles of switching tube Q2；Two pole
The negative electrode of pipe D2 is connected with the positive pole of high-tension battery.Diode D2's arranges the induced electricity conductance that can be produced heater element
Go out, so as to prevent damaging switching tube Q2, and then ensure that the functional reliability of the application heater switch circuit.
Further, described heater switch circuit also prevents reversal connection high voltage power supply both positive and negative polarity from damaging switching tube including one
The diode D4 of Q1, Q2, the anode of diode D4 is connected with the negative pole of high-tension battery, the negative electrode of the diode D4 with open
Close the E poles connection of pipe Q4.Electric current can be led back to high voltage power supply and be born by the setting of diode D4 when high voltage power supply both positive and negative polarity is reversed
Pole, so as to prevent damaging switching tube, and then improves the functional reliability of the application heater switch circuit.
Description of the drawings
Fig. 1 is the circuit theory diagrams of prior art heater switch circuit.
Fig. 2 is the circuit theory diagrams of heater switch circuit embodiments 1 of the present invention.
Fig. 3 is the circuit theory diagrams of heater switch circuit embodiments 2 of the present invention.
Fig. 4 is the circuit theory diagrams of heater switch circuit embodiments 3 of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the invention will be further described with specific embodiment.
As shown in Fig. 2 a kind of heater switch circuit of the invention, including three switching tubes Q1, Q2, Q4, two resistance R1,
R2, two heating elements A, B, heater element A, B are generally PTC, resistance wire etc., and switching tube is IGBT or for MOSFET；Institute
The C poles for stating switching tube Q4 are connected with the positive pole of high-tension battery；The E poles of the switching tube Q4 and an electric connecting terminal of heater element A,
The one electric connecting terminal connection of heater element B；Another electric connecting terminal of the heater element A is connected with the C poles of switching tube Q1；It is described
The E poles of switching tube Q1 are connected with one end of resistance R1；Another electric connecting terminal of the heater element B connects with the C poles of switching tube Q2
Connect；The E poles of the switching tube Q2 are connected with one end of resistance R2；The other end of the resistance R1, the other end of resistance R2 with it is high
The negative pole connection of piezoelectric battery；The G poles of the switching tube Q1, the G poles of switching tube Q2, the G of switching tube Q3 extremely connect with control chip
Connect.In this application, control chip is generally microprocessor.In the present embodiment, a heater element C can also again be added, together
Shi Zengjia resistance R3, switching tube Q3,.So control is capable of achieving by four switching tubes, it is concrete as shown in Figure 4.DC+、
DC- connects high-tension battery.
As shown in figure 3, described heater switch circuit also includes that one is used to carry out the induced-current that heater element is produced
Diode D1 of the water conservancy diversion to prevent switching tube Q1 from damaging, the anode of the diode D1 is connected with the C poles of switching tube Q1；Described two
The negative electrode of pole pipe D1 is connected with the positive pole of high-tension battery.
Described heater switch circuit also includes that one is used to that the induced-current that heater element is produced to be carried out water conservancy diversion to prevent
The diode D2 that switching tube Q2 is damaged, the anode of the diode D2 is connected with the C poles of switching tube Q2；The moon of the diode D2
Pole is connected with the positive pole of high-tension battery.
Described heater switch circuit also prevents from reversal connection high voltage power supply both positive and negative polarity to damage the two of switching tube Q1, Q2 including one
Pole pipe D4, the anode of diode D4 is connected with the negative pole of high-tension battery, the negative electrode of the diode D4 and the E of switching tube Q4
Pole connects.
Below only highly preferred embodiment of the present invention is described, but is not to be construed as limiting the scope of the invention.This
Invention is not limited only to above example, and its concrete structure allows to change.In every case in the protection model of independent claims of the present invention
Enclose interior made various change within the scope of the present invention.
Claims (4)
1. a kind of heater switch circuit, including three switching tubes Q1, Q2, Q4, two resistance R1, R2, two heating elements A, B；
It is characterized in that：The C poles of the switching tube Q4 are connected with the positive pole of high-tension battery；The E poles of the switching tube Q4 and heater element A
An electric connecting terminal, heater element B an electric connecting terminal connection；Another electric connecting terminal of the heater element A and switching tube Q1
C poles connection；The E poles of the switching tube Q1 are connected with one end of resistance R1；Another electric connecting terminal of the heater element B with open
Close the C poles connection of pipe Q2；The E poles of the switching tube Q2 are connected with one end of resistance R2；The other end of the resistance R1, resistance R2
The other end be connected with the negative pole of high-tension battery；The G poles of the switching tube Q1, the G poles of switching tube Q2, switching tube Q3 G it is extremely equal
It is connected with control chip.
2. heater switch circuit according to claim 1, it is characterised in that：Described heater switch circuit is also used including one
The diode D1 for carrying out water conservancy diversion in the induced-current produced to heater element to prevent switching tube Q1 from damaging, the diode D1's
Anode is connected with the C poles of switching tube Q1；The negative electrode of diode D1 is connected with the positive pole of high-tension battery.
3. heater switch circuit according to claim 1, it is characterised in that：Described heater switch circuit is also used including one
The diode D2 for carrying out water conservancy diversion in the induced-current produced to heater element to prevent switching tube Q2 from damaging, the diode D2's
Anode is connected with the C poles of switching tube Q2；The negative electrode of diode D2 is connected with the positive pole of high-tension battery.
4. heater switch circuit according to claim 1, it is characterised in that：Described heater switch circuit is also anti-including one
Only reversal connection high voltage power supply both positive and negative polarity is damaging the diode D4 of switching tube Q1, Q2, the anode and high-tension battery of the diode D4
Negative pole connection, the negative electrode of the diode D4 is connected with the E poles of switching tube Q4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611179012.0A CN106627038B (en) | 2016-12-19 | 2016-12-19 | Heater switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611179012.0A CN106627038B (en) | 2016-12-19 | 2016-12-19 | Heater switch circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106627038A true CN106627038A (en) | 2017-05-10 |
| CN106627038B CN106627038B (en) | 2018-10-12 |
Family
ID=58833680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611179012.0A Active CN106627038B (en) | 2016-12-19 | 2016-12-19 | Heater switch circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106627038B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109246859A (en) * | 2018-06-22 | 2019-01-18 | 杭州先途电子有限公司 | A kind of method for heating and controlling and device |
| CN110907858A (en) * | 2018-09-14 | 2020-03-24 | 杭州先途电子有限公司 | Fault detection method of heating switch circuit and electric heater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3985365B2 (en) * | 1997-12-25 | 2007-10-03 | 株式会社デンソー | Air conditioner for vehicles |
| CN201405970Y (en) * | 2009-05-27 | 2010-02-17 | 陈志飞 | Vehicle-mounted intelligent electric heating device |
| CN201925975U (en) * | 2011-01-28 | 2011-08-10 | 宁波方太厨具有限公司 | High-reliability control circuit for microwave oven |
| CN202634263U (en) * | 2012-04-25 | 2012-12-26 | 宁波中荣声学科技有限公司 | Protection circuit of switching power supply |
| CN202839463U (en) * | 2012-08-23 | 2013-03-27 | 美的集团股份有限公司 | Relay control circuit and electric cooker |
-
2016
- 2016-12-19 CN CN201611179012.0A patent/CN106627038B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3985365B2 (en) * | 1997-12-25 | 2007-10-03 | 株式会社デンソー | Air conditioner for vehicles |
| CN201405970Y (en) * | 2009-05-27 | 2010-02-17 | 陈志飞 | Vehicle-mounted intelligent electric heating device |
| CN201925975U (en) * | 2011-01-28 | 2011-08-10 | 宁波方太厨具有限公司 | High-reliability control circuit for microwave oven |
| CN202634263U (en) * | 2012-04-25 | 2012-12-26 | 宁波中荣声学科技有限公司 | Protection circuit of switching power supply |
| CN202839463U (en) * | 2012-08-23 | 2013-03-27 | 美的集团股份有限公司 | Relay control circuit and electric cooker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109246859A (en) * | 2018-06-22 | 2019-01-18 | 杭州先途电子有限公司 | A kind of method for heating and controlling and device |
| CN109246859B (en) * | 2018-06-22 | 2021-01-22 | 杭州先途电子有限公司 | Heating control method and device |
| CN110907858A (en) * | 2018-09-14 | 2020-03-24 | 杭州先途电子有限公司 | Fault detection method of heating switch circuit and electric heater |
| CN110907858B (en) * | 2018-09-14 | 2022-03-15 | 杭州先途电子有限公司 | Fault detection method of heating switch circuit and electric heater |
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| Publication number | Publication date |
|---|---|
| CN106627038B (en) | 2018-10-12 |
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