CN204880553U - Drum fan control of vehicle air conditioner system circuit - Google Patents
Drum fan control of vehicle air conditioner system circuit Download PDFInfo
- Publication number
- CN204880553U CN204880553U CN201520680832.2U CN201520680832U CN204880553U CN 204880553 U CN204880553 U CN 204880553U CN 201520680832 U CN201520680832 U CN 201520680832U CN 204880553 U CN204880553 U CN 204880553U
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- China
- Prior art keywords
- air blast
- adjusting module
- speed adjusting
- air
- conditioner controller
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- Air-Conditioning For Vehicles (AREA)
Abstract
The utility model provides a drum fan control of vehicle air conditioner system circuit, include: air conditioner controller, air -blower, air -blower relay, speed governing module, battery power, air -blower relay coil's the other end with the relay control signal interface connection of air conditioner controller, the air -blower anodal with the anodal voltage feedback interface connection of air -blower of air conditioner controller. Like this for drum fan control of vehicle air conditioner system circuit not only possesses speed governing module fault protection function and whether air -blower fault protection function is in the malfunction scheduling problem and can judge the air -blower.
Description
Technical field
The utility model relates to automotive air-conditioning system, particularly relates to a kind of blower for automobile air conditioning system control circuit.
Background technology
In automotive air-conditioning system, air blast and governing system thereof are important parts.Air blast has different gear change functions, to meet the demand of user to different air quantity.Under manual control mode, air blast generally has fixing gear, and as 1 ~ 8 grade, user have selected a certain gear, and air blast, after overregulating, is fixed on this gear work; Under automatic control mode, air blast is in the state of stepless speed regulation, and the air output size of air blast is determined by automatic control algorithm.The gear of air blast regulates general by speed adjusting resistance or speed adjusting module realization.In the system of many gears (being greater than 5 grades), the general speed adjusting module that uses realizes.
The power of air blast comparatively greatly, is generally greater than 200W, belongs to high-power electric appliance, and air blast is opened or turned off, and running to compensate to car load power consumption and engine all can have considerable influence, and the operation of air blast relates to the security of car load operation.Therefore, need blower fault safeguard measure in Air-condition system control, when air blast is out of control, guard mode can be entered in time, be unlikely to affect car load electric power system and dynamical system etc.
As shown in Figure 1, be the blower for automobile air conditioning system control circuit schematic diagram of prior art.After ignition switch power supply is connected, air blast relay is started working (normally opened contact connection), and air blast cathode voltage is battery feed voltage.When air-conditioning system is set as OFF, air-conditioner controller regulates speed adjusting module control signal, and make speed adjusting module be in high impedance status, now, air blast cathode voltage is battery feed voltage, and air blast both end voltage is 0V, and air blast does not work; When the air blast gear of air-conditioning system setting is 1 ~ 8 grade, air-conditioner controller regulates speed adjusting module control signal, speed adjusting module is made to be in different impedance states, according to air blast cathode voltage feedback signal, judge whether adjusted to target voltage, if do not reach target voltage, then proceed to regulate.
But there is following defect in the blower for automobile air conditioning system control circuit of prior art:
1) speed adjusting module failure protection function is not possessed.When speed adjusting module breaks down, as internal short-circuit, air blast will be in runaway condition, even if close air-conditioning, air blast is still in running order.
2) cannot judge whether air blast is in malfunction, as the running resistance increase etc. that stall, corrosion cause.
3) blower fault defencive function is not possessed.When air blast runs appearance exception, can not timely and effective cut-out air blast power supply circuits.
Utility model content
The utility model provides a kind of blower for automobile air conditioning system control circuit, does not possess speed adjusting module failure protection function and blower fault defencive function and cannot judge whether air blast is in the problems such as malfunction with the blower for automobile air conditioning system control circuit solving prior art.
In order to solve the problem, the utility model provides a kind of blower for automobile air conditioning system control circuit, comprise: air-conditioner controller, air blast, air blast relay, speed adjusting module, battery feed, the first end of described speed adjusting module is connected with the speed adjusting module control signal interface of described air-conditioner controller as control end, second end of described speed adjusting module is connected with the negative pole of described air blast, 3rd end ground connection of described speed adjusting module or be connected with described battery feed positive terminal, the negative pole of described air blast is also connected with the air blast cathode voltage feedback interface of described air-conditioner controller, the positive pole of described battery feed is connected with the stationary contact of described air blast relay, the movable contact of described air blast relay is connected with the positive pole of described air blast, one end of described air blast relay coil is connected with ignition switch positive source, it is characterized in that, the other end of described air blast relay coil is connected with the relay control signal interface of described air-conditioner controller, the positive pole of described air blast is connected with the air blast cathode voltage feedback interface of described air-conditioner controller.
Preferably, described speed adjusting module comprises nmos pass transistor, described nmos pass transistor grid is connected with the speed adjusting module control signal interface of described air-conditioner controller as the control end of described speed adjusting module, described nmos transistor drain is connected with the negative pole of described air blast as the second end of described speed adjusting module, and described nmos pass transistor source electrode is as the 3rd end ground connection of described speed adjusting module.
Preferably, described speed adjusting module comprises PMOS transistor, described PMOS transistor grid is connected with the speed adjusting module control signal interface of described air-conditioner controller as the control end of described speed adjusting module, described PMOS transistor drain electrode is connected with the negative pole of described air blast as the second end of described speed adjusting module, and described PMOS transistor source electrode is connected with described battery feed positive terminal as the 3rd end of described speed adjusting module.
Preferably, described speed adjusting module control signal interface, described air blast cathode voltage feedback interface, described relay control signal interface are connected with external circuit by air-conditioner controller connector with described air blast cathode voltage feedback interface.
The beneficial effects of the utility model are; the utility model is by being connected the other end of described air blast relay coil with the relay control signal interface of described air-conditioner controller; the positive pole of described air blast is connected with the air blast cathode voltage feedback interface of described air-conditioner controller, makes blower for automobile air conditioning system control circuit not only possess speed adjusting module failure protection function and blower fault defencive function and can judge whether air blast is in the problems such as malfunction.
Accompanying drawing explanation
Fig. 1 is the blower for automobile air conditioning system control circuit schematic diagram of prior art.
Fig. 2 is blower for automobile air conditioning system control circuit schematic diagram of the present utility model.
1, air-conditioner controller 2, air blast relay 3, air blast 4, speed adjusting module 5, speed adjusting module control signal interface 6, air blast cathode voltage feedback interface 7, ignition switch power supply 8, battery feed 9, air blast cathode voltage feedback interface 10, relay control signal interface
Detailed description of the invention
As shown in Figure 2, be blower for automobile air conditioning system control circuit schematic diagram of the present utility model.The utility model provides a kind of blower for automobile air conditioning system control circuit, comprise: air-conditioner controller 1, air blast relay 2, air blast 3, speed adjusting module 4, battery feed 8, the first end of described speed adjusting module 4 is connected with the speed adjusting module control signal interface 5 of described air-conditioner controller 1 as control end, second end of described speed adjusting module 4 is connected with the negative pole of described air blast 3, 3rd end ground connection of described speed adjusting module 4 or be connected with described battery feed 8 positive terminal, the negative pole of described air blast 3 is also connected with the air blast cathode voltage feedback interface 6 of described air-conditioner controller 1, the positive pole of described battery feed 8 is connected with the stationary contact of described air blast relay 2, the movable contact of described air blast relay 2 is connected with the positive pole of described air blast 3, one end of described air blast relay coil is connected with ignition switch power supply 7 positive pole, it is characterized in that, the other end of described air blast relay coil is connected with the relay control signal interface 10 of described air-conditioner controller 1, the positive pole of described air blast 3 is connected with the air blast cathode voltage feedback interface 9 of described air-conditioner controller 1.
Wherein, described speed adjusting module 4 comprises nmos pass transistor, described nmos pass transistor grid is connected with the speed adjusting module control signal interface 5 of described air-conditioner controller 1 as the control end of described speed adjusting module 4, described nmos transistor drain is connected with the negative pole of described air blast 3 as the second end of described speed adjusting module 4, and described nmos pass transistor source electrode is as the 3rd end ground connection of described speed adjusting module 4.
Wherein, described speed adjusting module control signal interface 4, described air blast cathode voltage feedback interface 5, described relay control signal interface 10 are connected with external circuit by air-conditioner controller connector with described air blast cathode voltage feedback interface 9.The air-conditioner controller connector model that the utility model adopts is KETMG642179.Adopt plug connector mode to connect, air-conditioner controller 1 is connected with external circuit efficiently convenient.
Like this, blower for automobile air conditioning system control circuit is made not only to possess speed adjusting module failure protection function and blower fault defencive function and can judge whether air blast is in the problems such as malfunction.
After ignition switch power supply is connected, air blast relay is started working (normally opened contact connection), and air blast cathode voltage is battery feed voltage.When air-conditioning system is set as OFF, air-conditioner controller regulates speed adjusting module control signal, and make speed adjusting module be in high impedance status, now, air blast cathode voltage is battery feed voltage, and air blast both end voltage is 0V, and air blast does not work; When the air blast gear of air-conditioning system setting is 1 ~ 8 grade, air-conditioner controller regulates speed adjusting module control signal, speed adjusting module is made to be in different impedance states, according to air blast cathode voltage feedback signal, judge whether adjusted to target voltage, if do not reach target voltage, then proceed to regulate.
Air-conditioner controller gathers air blast cathode voltage feedback signal and air blast cathode voltage feedback signal, obtain air blast current voltage, then, the current voltage of air blast is judged, judge air blast current voltage whether in rational voltage range (air blast 1 ~ 8 grade, the voltage range that each gear has it to specify).If exceed the voltage range of regulation, then think that air blast breaks down.When air blast breaks down, in air-conditioner controller, relay control signal exports as 12V high level, and air blast relay is quit work, and cuts off blower circuit.Judgement and the protection of blower fault can be realized like this.
Air-conditioner controller regulates speed adjusting module control signal according to the gear of air blast, and the conducting degree of speed adjusting module (namely hindering the ability of electric current) is changed.When air blast gear changes, and air blast current voltage without significant change time, then speed adjusting module failure of adjustment, thinks that speed adjusting module breaks down.When speed adjusting module breaks down, in air-conditioner controller, relay control signal exports as 12V high level, and air blast relay is quit work, and cuts off blower circuit.Speed adjusting module breakdown judge and protection can be realized like this.
In another embodiment, described speed adjusting module 4 comprises PMOS transistor, described PMOS transistor grid is connected with the speed adjusting module control signal interface 4 of described air-conditioner controller 1 as the control end of described speed adjusting module 4, described PMOS transistor drain electrode is connected with the negative pole of described air blast 3 as the second end of described speed adjusting module, and described PMOS transistor source electrode is connected with described battery feed 8 positive terminal as the 3rd end of described speed adjusting module 4.But though PMOS transistor can be used as high-side driver easily, because conducting resistance is large, price, replaces the reasons such as kind is few, in high-side driver, usually still uses nmos pass transistor.
The utility model provides a kind of blower for automobile air conditioning system control circuit, comprise: air-conditioner controller, air blast, air blast relay, speed adjusting module, battery feed, by the other end of described air blast relay coil is connected with the relay control signal interface of described air-conditioner controller, the positive pole of described air blast is connected with the air blast cathode voltage feedback interface of described air-conditioner controller, blower for automobile air conditioning system control circuit is made not only to possess speed adjusting module failure protection function and blower fault defencive function and can judge whether air blast is in the problems such as malfunction.
Above-described specific embodiment; the purpose of this utility model, technical scheme are further described; be understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a blower for automobile air conditioning system control circuit, comprise: air-conditioner controller, air blast, air blast relay, speed adjusting module, battery feed, the first end of described speed adjusting module is connected with the speed adjusting module control signal interface of described air-conditioner controller as control end, second end of described speed adjusting module is connected with the negative pole of described air blast, 3rd end ground connection of described speed adjusting module or be connected with described battery feed positive terminal, the negative pole of described air blast is also connected with the air blast cathode voltage feedback interface of described air-conditioner controller, the positive pole of described battery feed is connected with the stationary contact of described air blast relay, the movable contact of described air blast relay is connected with the positive pole of described air blast, one end of described air blast relay coil is connected with ignition switch positive source, it is characterized in that, the other end of described air blast relay coil is connected with the relay control signal interface of described air-conditioner controller, the positive pole of described air blast is connected with the air blast cathode voltage feedback interface of described air-conditioner controller.
2. control circuit according to claim 1, it is characterized in that, described speed adjusting module comprises nmos pass transistor, described nmos pass transistor grid is connected with the speed adjusting module control signal interface of described air-conditioner controller as the control end of described speed adjusting module, described nmos transistor drain is connected with the negative pole of described air blast as the second end of described speed adjusting module, and described nmos pass transistor source electrode is as the 3rd end ground connection of described speed adjusting module.
3. control circuit according to claim 1, it is characterized in that, described speed adjusting module comprises PMOS transistor, described PMOS transistor grid is connected with the speed adjusting module control signal interface of described air-conditioner controller as the control end of described speed adjusting module, described PMOS transistor drain electrode is connected with the negative pole of described air blast as the second end of described speed adjusting module, and described PMOS transistor source electrode is connected with described battery feed positive terminal as the 3rd end of described speed adjusting module.
4. control circuit according to claim 1, it is characterized in that, described speed adjusting module control signal interface, described air blast cathode voltage feedback interface, described relay control signal interface are connected with external circuit by air-conditioner controller connector with described air blast cathode voltage feedback interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520680832.2U CN204880553U (en) | 2015-08-28 | 2015-08-28 | Drum fan control of vehicle air conditioner system circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520680832.2U CN204880553U (en) | 2015-08-28 | 2015-08-28 | Drum fan control of vehicle air conditioner system circuit |
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| Publication Number | Publication Date |
|---|---|
| CN204880553U true CN204880553U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520680832.2U Expired - Fee Related CN204880553U (en) | 2015-08-28 | 2015-08-28 | Drum fan control of vehicle air conditioner system circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331778A (en) * | 2018-03-26 | 2018-07-27 | 奇瑞汽车股份有限公司 | Control circuit of blower for vehicle air conditioning |
-
2015
- 2015-08-28 CN CN201520680832.2U patent/CN204880553U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331778A (en) * | 2018-03-26 | 2018-07-27 | 奇瑞汽车股份有限公司 | Control circuit of blower for vehicle air conditioning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20190828 |
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| CF01 | Termination of patent right due to non-payment of annual fee |