CN102514536A - Vehicle defrosting control method and system - Google Patents
Vehicle defrosting control method and system Download PDFInfo
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- CN102514536A CN102514536A CN2011104461291A CN201110446129A CN102514536A CN 102514536 A CN102514536 A CN 102514536A CN 2011104461291 A CN2011104461291 A CN 2011104461291A CN 201110446129 A CN201110446129 A CN 201110446129A CN 102514536 A CN102514536 A CN 102514536A
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- defogger
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Abstract
The invention provides a vehicle defrosting control method and a vehicle defrosting control system. The method comprises the following steps that: when a vehicle is not started and a rearview mirror, and the like, of the vehicle are defrosted, if the voltage of a storage battery is too low, the system automatically detects the electric quantity of the battery and outputs a signal and a start signal into a defrosting controller. When the vehicle is not started and the rearview mirror, and the like, of the vehicle are defrosted, if the voltage of the storage battery is not enough, a defroster is stopped to ensure that the voltage of the storage battery is kept at a level that the vehicle can be started. The method is simple and reliable; and the system is simple in structure and is convenient to use.
Description
Technical field
The present invention relates to the auto body appliance field, particularly a kind of control method of automobile defrost system and control system.
Background technology
At present, at auto trade, defrost function (comprising back mirror defrosting, rear seat windscreen defrosting) for the terminal user vehicle, uses more and more common.This technological utilization becomes already and solves vehicle safety in winter, easy-to-use important solutions.This system when dispatching from the factory, all has been installed by most of automobiles.As long as mostly designers all be accustomed to being designed to defrost function just can be effective behind ACC, and vehicle into account battery tension not.In addition, because defogger all is some electric heaters generally, need the more electric energy of consumption rate; Therefore, in defrost process, if current voltage is less in the battery; Consume the voltage of a lot of batteries; Also will cause cell pressure after being reduced to a certain degree, driving engine just can't start again, will make troubles to the user like this.
Summary of the invention
For overcoming defrosting when automobile is not lighted a fire in the prior art, too much consume vehicle battery, cause can not starting the deficiency that automobile brings because battery tension is too low.The present invention provides a kind of control method and control system of vehicle defroster, and this method is controlled at and stops defogger defrosting work when cell pressure hangs down, and keeps enough voltage to guarantee storage battery.
The technical scheme that the present invention adopts in order to realize its goal of the invention is: a kind of control method of vehicle defroster; The work of vehicle defroster controller control defogger; Described vehicle defroster controller is after detecting the master cock closure that defrosts on the vehicle; Control described defogger and start working, after the defrosting master cock is broken off, control described defogger and quit work; May further comprise the steps:
Step 1, vehicle defroster controller are after detecting defrosting master cock closure, and whether the ignition signal that detects vehicle is effective, if effectively turn to step 4, otherwise turns to step 2;
The cell pressure of step 2, detection vehicle battery if cell pressure meets the requirements, then turns to step 3, otherwise turns to step 1;
Step 3, control defogger begin defrosting, and continue to detect the cell pressure of vehicle battery, if cell pressure is undesirable, then control control defogger stops defrosting, turns to step 2;
Step 4, control defogger begin defrosting; Break off up to the defrosting master cock.
Further; In the control method of above-mentioned vehicle defroster: the cell pressure of detection vehicle battery is taked to measure cell output voltage and is confirmed; When storage battery output voltage during greater than 11V; Confirm that cell pressure meets the requirements,, confirm that cell pressure does not meet the defrosting condition when storage battery output voltage during less than 11V.
Further, in the control method of above-mentioned vehicle defroster: in the said step 3, when defogger begins to defrost; Detect the cell pressure that detects vehicle battery when undesirable; Postpone 5 seconds, in order to confirm that this low voltage is stable not meeting, afterwards; If it is undesirable to detect the cell pressure continuation that detects vehicle battery, then control control defogger stops defrosting.
The present invention also provides a kind of control system that realizes above-mentioned method; Its technical scheme is; This system comprises defrost controller, defrosting master cock, body accessory source switch, relay; The on-off signal mouth of described defrosting master cock and body accessory source switch is connected with described defrost controller, and described defrost controller control signal output ends connects the control end of described relay, and two contacts of described relay are arranged between defogger and the power supply; Also comprise vehicle ignition signal and the battery voltage detector that detects the vehicle battery tension; The mouth of described vehicle ignition signal is connected with described defrost controller, and the testing result mouth of battery voltage detector is connected with described defrost controller.
Further, in the above-mentioned control system: described battery voltage detector is an instrumentation, and described instrumentation is connected with described defrost controller with low speed CAN bus through the high-speed CAN bus of vehicle itself.
The present invention is not owing to have under the situation of igniting at automobile; When automobile rearview mirror etc. is defrosted or in the defrost process,, then stop defogger work if find that the cell pressure of storage battery is not enough; Voltage to guarantee storage battery is enough to start automobile; This method is simple and reliable, and native system is simple in structure, and is easy to use.
Below will combine accompanying drawing and embodiment, the present invention will be carried out comparatively detailed explanation.
Description of drawings
Fig. 1 is a control system block diagram of the present invention.
Fig. 2 is a control flow chart of the present invention.
Fig. 3 is the embodiment of the invention 2 diagram of circuits.
The specific embodiment
Embodiment 1, and present embodiment is that the car load cell pressure of avoiding causing because of defrosting is crossed the low situation about can't light a fire that causes, in defrost process, detects the car load cell pressure.Adopting the most simple a kind of method in the present embodiment--the mode of-process CAN network obtains the voltage signal of battery through instrument.So just can always detect the voltage of battery in the process of defrosting, and when voltage is reduced to a certain degree, cut off the defrosting control circuit, stop the continuation consumption of cell pressure.
As shown in Figure 1: the battery voltage detector that the system of present embodiment comprises defrost controller, defrosting master cock, body accessory source switch, relay, vehicle ignition signal and detects vehicle battery tension body accessory source switch here is exactly that ACC signal in the operator's compartment is like the switch 1 among the figure; When this signal is effective; Body electric system has been supplied power; Defrost controller obtains power supply equally; The vehicle ignition signal is the IGN signal in the operator's compartment, is the signal that produces behind the engine starting, like the switch 2 among the figure; The defrosting master cock is arranged in the operator's compartment switch by manual control; The on-off signal mouth of the mouth of vehicle ignition signal, defrosting master cock and body accessory source switch is connected with defrost controller, and the defrost controller control signal output ends is succeeded the control end of electrical equipment, and two contacts of relay are arranged between defogger and the power supply; The testing result mouth of battery voltage detector is connected with described defrost controller.
The controlled step of present embodiment is as shown in Figure 2 as follows: the work of vehicle defroster controller control defogger; Described vehicle defroster controller is after detecting the master cock closure that defrosts on the vehicle; Controlling described defogger starts working; After the defrosting master cock is broken off, control described defogger and quit work; May further comprise the steps:
Step 1, vehicle defroster controller are after detecting defrosting master cock closure, and whether the ignition signal that detects vehicle is effective, if effectively turn to step 4, otherwise turns to step 2;
The voltage of step 2, detection vehicle battery if cell pressure greater than 11V, then turns to step 3, otherwise turns to step 1;
Step 3, control defogger begin defrosting, and continue to detect the cell pressure of vehicle battery, if cell pressure continues 5 seconds less than 11V, then control control defogger stops defrosting, turns to step 2;
Step 4, control defogger begin defrosting; Break off up to the defrosting master cock.
Embodiment 2, and the system of present embodiment 2 adopts the system of embodiment 1, just confirm the control flow under the invalid state of IGN, and is as shown in Figure 3
1, instrumentation (CLM) sends on the CAN bus through after the processing of instrument through the voltage of entity line sampling car load battery.
2, (the CAN bus adopts differential voltage to defrost controller, and two-way is arranged, i.e. CAN High and CAN Low, the real-time voltage that reads the vehicle body battery through the CAN bus.
3, under body accessory source switch (ACC) actv. condition, when the user pressed the defrost switch button, CLM detected this on-off signal, carried out defrost function.
4, in the process of carrying out defrost function; The magnitude of voltage of real-time judge battery; Engine ignition voltage according to auto trade is considered; When the voltage that detects battery is lower than 11V (this magnitude of voltage can be set at different values through the EEPROM value that CLM is set, to satisfy the requirement of different main engine plants to this threshold voltage), promptly begin defrosting is taken measures.
5, when voltage is lower than 11V, CLM begins timing in 5 seconds, after reaching 5 seconds, if voltage still is lower than 11V, then cuts off defrosting control immediately.So value is provided with 5 seconds Looking Out Time here; Be because there is a lot of high-performance current consumers in car body itself; The voltage of battery can be dragged down the regular hour when high-performance current consumer starts; For fear of this of short duration low voltage condition that causes because opening other current consumer, specially set this time value.
6, after cutting off defrosting, if defrost switch is still effective, CLM can continue to detect the voltage of battery, if after cell pressure is elevated to 12V, and detect continuous 15 seconds be higher than 12V after, defrosting control can continue to accomplish the defrosting task.The settings in 15 seconds here are in order to judge that cell pressure is the stable 12V that risen to.
In follow-up defrosting work, repeat 1 to 6 step, to realize safe defrosting control.
Claims (5)
1. the control method of a vehicle defroster; The work of vehicle defroster controller control defogger, described vehicle defroster controller is controlled described defogger and is started working after detecting the master cock closure that defrosts on the vehicle; After the defrosting master cock is broken off, control described defogger and quit work; It is characterized in that: may further comprise the steps:
Step 1, vehicle defroster controller are after detecting defrosting master cock closure, and whether the ignition signal that detects vehicle is effective, if effectively turn to step 4, otherwise turns to step 2;
The cell pressure of step 2, detection vehicle battery if cell pressure meets the requirements, then turns to step 3, otherwise turns to step 1;
Step 3, control defogger begin defrosting, and continue to detect the cell pressure of vehicle battery, if cell pressure is undesirable, then control control defogger stops defrosting, turns to step 2;
Step 4, control defogger begin defrosting; Break off up to the defrosting master cock.
2. the control method of vehicle defroster according to claim 1; It is characterized in that: the cell pressure that detects vehicle battery; When storage battery output voltage during greater than 11V; Confirm that cell pressure meets the defrosting condition,, confirm that cell pressure does not meet the defrosting condition when storage battery output voltage during less than 11V.
3. the control method of vehicle defroster according to claim 1; It is characterized in that: in the said step 3, when defogger begins to defrost, detect the cell pressure that detects vehicle battery when undesirable; Postpone 5 seconds; Afterwards, if it is undesirable to detect the cell pressure continuation that detects vehicle battery, then control control defogger stops defrosting.
4. the control system of the control method of a vehicle defroster according to claim 1; Comprise defrost controller, defrosting master cock, body accessory source switch, relay; The on-off signal mouth of described defrosting master cock and body accessory source switch is connected with described defrost controller; Described defrost controller control signal output ends connects the control end of described relay, and two contacts of described relay are arranged between defogger and the power supply; It is characterized in that: also comprise vehicle ignition signal and the battery voltage detector that detects the vehicle battery tension; The mouth of described vehicle ignition signal is connected with described defrost controller, and the testing result mouth of battery voltage detector is connected with described defrost controller.
5. control system according to claim 4 is characterized in that: described battery voltage detector is an instrumentation, and described instrumentation is connected with described defrost controller with low speed CAN bus through the high-speed CAN bus of vehicle itself.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104461291A CN102514536A (en) | 2011-12-27 | 2011-12-27 | Vehicle defrosting control method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104461291A CN102514536A (en) | 2011-12-27 | 2011-12-27 | Vehicle defrosting control method and system |
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| CN102514536A true CN102514536A (en) | 2012-06-27 |
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| CN2011104461291A Pending CN102514536A (en) | 2011-12-27 | 2011-12-27 | Vehicle defrosting control method and system |
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Citations (4)
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| JP2009040191A (en) * | 2007-08-08 | 2009-02-26 | Auto Network Gijutsu Kenkyusho:Kk | Power supply device for vehicle |
| CN101412387A (en) * | 2007-10-18 | 2009-04-22 | 株式会社电装 | Vehicle-use power supply management apparatus |
| US20100082198A1 (en) * | 2008-09-26 | 2010-04-01 | Honda Motor Co., Ltd. | Vehicle load control device |
| CN202413672U (en) * | 2011-12-27 | 2012-09-05 | 昌辉汽车电气系统（安徽）有限公司 | Control system of defrosting of vehicle |
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2011
- 2011-12-27 CN CN2011104461291A patent/CN102514536A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009040191A (en) * | 2007-08-08 | 2009-02-26 | Auto Network Gijutsu Kenkyusho:Kk | Power supply device for vehicle |
| CN101412387A (en) * | 2007-10-18 | 2009-04-22 | 株式会社电装 | Vehicle-use power supply management apparatus |
| US20100082198A1 (en) * | 2008-09-26 | 2010-04-01 | Honda Motor Co., Ltd. | Vehicle load control device |
| JP2010076595A (en) * | 2008-09-26 | 2010-04-08 | Honda Motor Co Ltd | Load control device for vehicle |
| CN202413672U (en) * | 2011-12-27 | 2012-09-05 | 昌辉汽车电气系统（安徽）有限公司 | Control system of defrosting of vehicle |
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Application publication date: 20120627 |