CN104533217B - Automobile window control circuit - Google Patents
Automobile window control circuit Download PDFInfo
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- CN104533217B CN104533217B CN201410706864.5A CN201410706864A CN104533217B CN 104533217 B CN104533217 B CN 104533217B CN 201410706864 A CN201410706864 A CN 201410706864A CN 104533217 B CN104533217 B CN 104533217B
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- bridge chip
- bridge
- mcu
- low side
- control circuit
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Abstract
The invention discloses an automobile window control circuit. The automobile window control circuit comprises an H-bridge chip; the high edge and the low edge of the output end of one bridge of the H-bridge chip are integrally connected, and while the high edge and the low edge of another bridge are integrally connected, so as to form a high edge driver and a low edge driver which are connected to an automobile window load motor; the high edge driver is synchronously connected with a defrosting load; the control signal input end of the H-bridge chip is connected with the automobile window control and defrosting control signal output end an automobile MCU. The automobile window control circuit has the advantages that internal control circuits of the automobile are simplified, the circuit reliability is improved, the production cost is saved, and the space for the circuit is saved.
Description
Technical field
The present invention relates to vehicle electric field, especially it is provided with one kind and is capable of vehicle window rising function and defrosting multiplexing functions
Circuit structure.
Background technology
The control circuit of vehicle window typically adopts relay mode or adopts h bridge chip at present, is needed using relay mode
2 relays are wanted to realize the positive reverse direction flow of electric current of load.The volume of relay is larger simultaneously, and the condition of application has certain limit
System, is unfavorable for the exploitation design of integrated circuit.H bridge chip equally in order to realize the positive reverse direction flow of load current, needs 2 tunnels
The combination of hsd and 2 road lsd is realized.And the defrosting function of using on automobile is it is also desirable to be used alone a relay or a road
Hsd chip, to drive, is understood multiplex one piece of flash driving chip in design, be increased design cost.
Content of the invention
The technical problem to be solved is to realize a kind of structure to simplify, and possesses the car of rearview mirror defrosting control function
Window control circuit.
To achieve these goals, the technical solution used in the present invention is: window control circuit, including h bridge chip, described
The high-low side of one road and bridge output end of h bridge chip connects, and the high-low side of another road and bridge also connects, and respectively constitutes flash
Drive and low side drives, described flash drives and low side drives vehicle window load motor, and it is negative that described flash driving is concurrently accessed defrosting
Carry, the control signal input of described h bridge chip connects vehicle window control and the demisting control signal output end of vehicle mcu.
Output pin sh2 and dl2 of described h bridge chip is connected together as flash and drives, output pin sh1 and dl1
It is connected together as low side to drive, input pin ih1 and il2 of described h bridge chip connects and control decline with mcu
Vehicle window signal output part connects, and input pin ih2 and il1 and mcu of described h bridge chip control the vehicle window signal output part rising
Connect, the input pin ih2 and mcu demisting control signal output end of described h bridge chip is connected.
Described h bridge chip adopts the h bridge chip of the bts 7811k series of company of Infineon.
It is an advantage of the current invention that having simplified automotive interior control circuit, improving circuit reliability, and reducing and produce into
This, saved circuit and taken up space.
Brief description
Below the content of width accompanying drawing expression every in description of the invention is briefly described:
Fig. 1 is window control circuit schematic diagram；
Fig. 2 is h bridge chip internal structure schematic diagram.
Specific embodiment
The application adopts h bridge chip, the high-low side of road and bridge is connected, the high-low side of another road and bridge also connects one
Rise, drive (hsd) and base to drive (lsd) to form circuit type control vehicle window load motor electricity by opening the flash of different bridges
The positive reverse direction flow of stream, and then realize the raising and lowering of vehicle window, we to realize driving defrosting load using multiplexing hsd scheme,
The hsd that vehicle window rises is driven to be concurrently accessed defrosting load, then vehicle window rises function and can mutually be independent of each other with defrosting function,
Vehicle window declines function and defrosting function avoids situation about simultaneously opening to occur by way of software, because open to make simultaneously
The brachium pontis controlling defrosting produces short circuit.
Specifically as shown in figure 1, the h bridge chip of window control circuit is using the bts 7811k series using company of Infineon
H bridge chip.Output pin sh2 and dl2 of h bridge chip is connected together as flash and drives, and output pin sh1 and dl1 is even
It is connected together and drives as low side, input pin ih1 and il2 of h bridge chip is connected and controlled the vehicle window letter declining with mcu
Number output end connects, and input pin ih2 and il1 and mcu of h bridge chip control the vehicle window signal output part of rising to be connected, h bridge core
The input pin ih2 and mcu demisting control signal output end of piece is connected.
Operation principle is as follows: sh2 and dl2 is linked together by output par, c, sh1 and dl1 connects, when needing vehicle window
When decline, the ih1 pin of input and il2 pin connect, mcu input high level, now sh1 output high level, electric current warp
Overload motor, reaches dl2 and forms loop, return to gnd through dl2；In the same manner, when needing vehicle window to rise, mcu first turns off
Ih1 and il2pin pin, sh1 and dl2 turns off；Now mcu exports high level to ih2 and il1 simultaneously, and now sh2 opens output height
Level, electric current passes through and loads to dl1, then returns to gnd through dl1, forms loop；Describe from the above, 2 different mistakes
Journey, electric current is different through the direction of motor, and then motor achieves rotating, that is, vehicle window function embodiment be rise and under
Fall；When mcu is to ih2 high level, il1 low level, ih1 low level, il2 low level, now only only sh2 output is high electric for chip
Flat, defrosting function is activated；
From the point of view of from the description above, defrosting function and vehicle window rise and can carry out simultaneously, and software controls allows vehicle window to decline and to remove
Frost can not export simultaneously, and allows the handoff delay between 2 be more than 200ms, and this time delay can allow and load the sensing turning off
Electromotive force fully discharges.
As shown in Figure 2 volume h bridge chip, can apply the circuit environment in below 40v, the electric current passing through in below 14a, after
The defrosting electric current maximum 1.8a of visor, in 3a, actually used 2 export simultaneously and do not have wind the normal electric current rising of vehicle window
Danger, chip internal possesses excessively stream and the protection of overload, simultaneously software and hardware can also design protection circuit, allow drive circuit
Work safer reliability.
Above in conjunction with accompanying drawing, the present invention is exemplarily described it is clear that the present invention implements is not subject to aforesaid way
Restriction, as long as employing the improvement of various unsubstantialities that method of the present invention design and technical scheme are carried out, or without changing
Enter and the design of the present invention and technical scheme are directly applied to other occasions, all within protection scope of the present invention.
Claims (2)
1. window control circuit, including h bridge chip it is characterised in that: the high-low side of a road and bridge output end of described h bridge chip is even
Connect together, the high-low side of another road and bridge also connects, respectively constitute flash and drive and the driving of low side, described flash drives and low
Side drives vehicle window load motor, and described flash drives and is concurrently accessed defrosting load, and the control signal input of described h bridge chip is even
The vehicle window picking up a mcu controls and demisting control signal output end;
Output pin sh2 and dl2 of described h bridge chip is connected together as flash and drives, and output pin sh1 and dl1 connects
Drive as low side, input pin ih1 and il2 of described h bridge chip connects and control, with mcu, the car declining together
Window signal output end connects, and input pin ih2 and il1 and mcu of described h bridge chip control the vehicle window signal output part rising even
Connect, the input pin ih2 and mcu demisting control signal output end of described h bridge chip is connected.
2. window control circuit according to claim 1 it is characterised in that: described h bridge chip adopts company of Infineon
The h bridge chip of bts 7811k series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410706864.5A CN104533217B (en) | 2014-11-28 | 2014-11-28 | Automobile window control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410706864.5A CN104533217B (en) | 2014-11-28 | 2014-11-28 | Automobile window control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104533217A CN104533217A (en) | 2015-04-22 |
| CN104533217B true CN104533217B (en) | 2017-01-25 |
Family
ID=52848822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410706864.5A Active CN104533217B (en) | 2014-11-28 | 2014-11-28 | Automobile window control circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN104533217B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459535A (en) * | 2018-01-31 | 2018-08-28 | 东风商用车有限公司 | A kind of integrated form Car's door controlling device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204238736U (en) * | 2014-11-28 | 2015-04-01 | 埃泰克汽车电子(芜湖)有限公司 | Novel window control circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4562387A (en) * | 1984-11-26 | 1985-12-31 | General Motors Corporation | Vehicle power window control |
| CN101748952A (en) * | 2009-12-16 | 2010-06-23 | 贵州大学 | CAN bus electrical control system for automobile windows |
| CN201859342U (en) * | 2010-11-03 | 2011-06-08 | 东风汽车有限公司 | CAN bus type vehicle door control device |
| CN202850734U (en) * | 2012-10-10 | 2013-04-03 | 长安大学 | Anti-pinch controller of car window |
| CN203129820U (en) * | 2012-12-21 | 2013-08-14 | 芜湖蓝宙电子科技有限公司 | Control circuit of anti-pinch power window |
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2014
- 2014-11-28 CN CN201410706864.5A patent/CN104533217B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204238736U (en) * | 2014-11-28 | 2015-04-01 | 埃泰克汽车电子(芜湖)有限公司 | Novel window control circuit |
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| Publication number | Publication date |
|---|---|
| CN104533217A (en) | 2015-04-22 |
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| SE01 | Entry into force of request for substantive examination | ||
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| GR01 | Patent grant | ||
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Address after: 241000 No. 48, Yinhu North Road, Wuhu District, China (Anhui) Free Trade Pilot Zone, Wuhu City, Anhui Province Patentee after: Wuhu Etec Automotive Electronics Co.,Ltd. Address before: 241000 No. 48, Yinhu North Road, Wuhu Economic and Technological Development Zone, Anhui Province Patentee before: ATECH AUTOMOTIVE (WUHU) Co.,Ltd. |
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