CN201983384U

CN201983384U - Electromobile automatic air conditioner controller with CAN (Controller Area Network) bus

Info

Publication number: CN201983384U
Application number: CN2010202318459U
Authority: CN
Inventors: 臧竞之
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-21
Filing date: 2010-06-21
Publication date: 2011-09-21
Anticipated expiration: 2020-06-21

Abstract

The utility model discloses an electromobile automatic air conditioner controller with a CAN (Controller Area Network) bus and relates to an electromobile air conditioner controller. The voltage values of each sensor, user switching signals, the data on the CAN bus, and the feedback information of each motor and fan are collected by a main chip of the controller; then the information is comprehensively processed; and each command is transmitted to peripheral execution units such as a cooling-heating motor, the fans, a mode motor, a fresh air/circulating air motor, a refrigeration variable frequency compressor and a PTC (Positive Temperature Coefficient) heater, etc. Meanwhile, partial information is transmitted to other nodes on an electromobile through the CAN bus. The signals are output to an LED (light-emitting diode) drive module by the main chip and are directly displayed on the controller by a green indicator lamp so that customers can directly know the working status of an air-conditioning system.

Description

The electric automobile automatic air condition controller of band CAN bus

Technical field:

The utility model relates to a kind of electric automobile air-conditioner controller.

Background technology

Requirement according to the permanent strategic development of country, electric automobile is the trend of an inevitable development, because the difference of electric automobile and gasoline car is bigger, mainly be that electric automobile adopts the source of battery pack as power, the power of considering electric automobile is limited, therefore requires all ECU modules all to have the ability of low-power consumption.While VMS, the relation of CLM in car load also is very close, according to VMS real-time car load information is issued the CLM node, the CLM node is according to the information of receiving, control compressor start and stop and rotating speed, the start and stop of PTC, thus adjust the power consumption of car load, make the time of electric automobile work longer, it is farther that distance is run.Electric automobile automatic air condition controller is according to the requirement of electric automobile, yet by having given birth to.

Present automotive air-conditioning controller mostly is hand switch formula and motorized adjustment mode greatly, also some is an automatic control mode, and there are many defectives in these automotive air-conditioning controllers: 1, because switching regulator is regulated and control, the compressor start and stop are frequent, noise is big, and the compressor life-span is short; 2, the temperature air door is a manual adjustments, causes manual adjustments frequent more greatly because the car internal and external environment changes, and causes security performance to reduce thus; 3, manual adjustments can not allow air-conditioning be in optimum Working, and comfort level is had a greatly reduced quality; 4, owing to have many uncertain factors on the automobile, sensor is more, and each unit is the swap data and the work that cooperatively interacts well, and data wire is a lot.

Summary of the invention

The utility model provides that a kind of changes in temperature air door degree of regulation height, noise are little, powerful, easy for installation, the electric automobile automatic air condition controller of the band CAN bus of processing ease.

The utility model is achieved by the following technical solution: a kind of electric automobile automatic air condition controller with the CAN bus, its major technique feature are that it partly is made of master chip control part, power supply module part, console switch part, signal input part part, output control part part, demonstration part, CAN Data Control; The external power source of its power supply module part inserts by a protection diode, land by a filter capacitor then, connect a filter inductance simultaneously, behind filter inductance, carrying out filtering with two electric capacity once more lands, add a transient state voltage suppressor simultaneously and land and protect, the power supply by above processing is linked into the stable 5V power supply of regulator block output again; External power source inserts by a diode, inserts the back and lands by a filter capacitor, and simultaneously through a filter inductance, power supply is through carrying out the filtering processing with two electric capacity behind the filter inductance, directly is used for feed system by the power supply after the above processing;

The filtering of " ∏ " type has been adopted in the analog signal importation, after wherein the external voltage signal of a bus inner sensor taps into, earlier land filtering by an electric capacity, then through a current-limiting resistance, with electric capacity filtering once more, directly supply with single-chip microcomputer through the stable voltage signal of above processing and handle behind the voltage process current-limiting resistance; Other sensor voltage collection is also identical with this;

Described controller has adopted the CAN communication technology: two signal line CANH, carry out static with a static releasing tube E1 behind the CANL access controller and eliminate processing, wherein bipod meets CANH respectively, CANL, another pin ground connection, holding wire CANH and CANL connecting resistance R46 simultaneously then, R47, an other end of this two resistance is by a capacitor C 34,473 receive 5 pin of CAN transceiver U3:TJA1040 after landing simultaneously, carry out anti-interference process at holding wire CANH with when CANL connects the static releasing tube through having coupling inductance F1 altogether, connect two capacitor C 7 then respectively, C8 lands, and receives 7 pin of U3 through the signal CANH of above processing, signal CANL receives 6 pin of U3, simultaneously 8 pin of U3 need land through a resistance, and 1 pin of U3 is received 29 pin of single-chip microcomputer by a resistance, and 4 pin of U3 are received 30 pin of single-chip microcomputer by a resistance.

The electric automobile automatic air condition controller of the utility model band CAN bus has adopted the CAN bus structures of how main competitive mode, it has the operation of many main websites and disperses the universal serial bus of arbitration and the characteristics of broadcast communication, on the CAN bus arbitrary node can be at any time on one's own initiative on network other node send information and be regardless of primary and secondary, therefore can between each node, realize fast, efficiently, free communication, the work state information of correlation unit on the automobile can in time be collected so that allow controller be operated in best duty, while is based on the characteristics of CAN bus, the data of exchange only need two lines just can transmit, overcome in the past the many and random shortcoming of data wire on the car load, this utility car air-conditioner controller is to changes in temperature air door degree of regulation height, noise is little, powerful, easy for installation.Processing ease, widely applicable, outward appearance is elegant, security performance good and have memory function.

Description of drawings:

Fig. 1 is an outside drawing of the present utility model;

Fig. 2 is a circuit block diagram of the present utility model;

Fig. 3 is a circuit diagram of the present utility model;

Fig. 4 is that the master chip of Fig. 3 is connected circuit enlarged drawing partly with the CAN bus data.

The specific embodiment:

As shown in Figure 1, this executor man-machine interface is provided with 2 buttons, is respectively: AC button, circulated air button; A big knob, for: the changes in temperature knob; Also have two toggles, be respectively: wind shelves toggle, pattern toggle.

Each button all indicates 1 as duty with green, it during off working state blue indication 2, wind shelves knob establishes 0, AUTO, L, M, H totally 5 gears, it is 18 ℃～32 ℃ that the changes in temperature knob is regulated temperature range, stepping is 2 ℃, the pattern knob is total to blow face, blow face/blow pin, blow pin, blow pin/defrosting, 5 air-out patterns of defrosting, and the changes in temperature knob can 180 ° of both forward and reverse directions rotations, and wind shelves and pattern toggle can rotate by 120 ° of both forward and reverse directions.

As Fig. 2, Fig. 3, Fig. 4, the electric automobile automatic air condition controller of this tape controller LAN (Controller Area Network is called for short CAN) bus is made of power supply module part, collecting sensor signal part, Controller Area Network BUS hop.Its power unit can be good at satisfying the EMC requirement of experiment, provide antijamming capability strong by following assembly for whole system, voltage-stabilized source: 1. external power source inserts by a protection diode RS1M-T (D1), land by a filter capacitor 0.1uF/400V (C29) then, meet a filter inductance 100uH (L2) simultaneously, behind L2, use two electric capacity (C1:100uF/50V once more, C2:0.1uF/50V) carrying out filtering lands, add a transient state voltage suppressor (ZD1) simultaneously and land and protect, the power supply by above processing is linked into the stable 5V power supply of regulator block output again; 2. in order to obtain stable 12V power supply, taked following measure, external power source inserts by a diode 6A60 (D2), inserting the back lands by a filter capacitor 0.1uF/400V (C30), simultaneously through a filter inductance 100uH (L1), power supply is through (C4:100uF/50V C3:0.1uF/50V) carries out the filtering processing, directly is used for feed system by the power supply after the above processing with two electric capacity behind the L1;

In order to gather stable and the strong signal of antijamming capability, the filtering of " ∏ " type has been adopted in the analog signal importation, now a bus inner sensor is wherein described, after external voltage signal taps into, earlier land filtering by an electric capacity (C12:0.1uF/50V), through a current-limiting resistance R2 (2.2K), with an electric capacity (C11:0.1uF/50V) filtering once more, directly supply with single-chip microcomputer through the stable voltage signal of above processing and handle behind the voltage process R2 then.Other sensor voltage collection is also identical with this.

This controller has adopted the CAN communication technology, in order to make communication capacity and antijamming capability strong, controller has adopted following mode to handle: two signal line (CANH, CANL) (wherein bipod meets CANH respectively to adopt an ESD (static releasing tube) E1 to carry out static elimination processing behind the access controller, CANL, another pin ground connection), CANH and CANL meet 1K resistance (R46 simultaneously then, R47), an other end of this two resistance is by a CBB electric capacity (C34,473) receive 5 pin of CAN transceiver (U3:TJA1040) after landing simultaneously, carry out anti-interference process at CANH with when CANL meets ESD through having coupling inductance (F1) altogether, meet two 27P electric capacity (C7 then respectively, C8) land, receive 7 pin of U3 through the signal CANH of above processing, CANL receives 6 pin of U3,8 pin of U3 need land through 4.7K resistance simultaneously, 1 pin of U3 is received 29 pin of single-chip microcomputer by a 1K resistance, 4 pin of U3 are received 30 pin of single-chip microcomputer by a 1K resistance, by the above back whole system handled one stable CAN communication environment have been arranged just.

Master chip control is to be that the core is formed with 9S08DZ32; power unit is by the protection diode; Transient Voltage Suppressor; the inductance that regulator block and elimination are disturbed; compositions such as filter capacitor; the output of two-way power supply is provided simultaneously; the console switch part is made up of 2 buttons and 3 brushes; stimulus part is by car inner sensor signal; car outer sensor signal; the evaporation gauge signal; the changes in temperature motor feedback signals; the speed adjusting module feedback signal; power supply voltage signal; the CAN signal is formed; output control part is by inside and outside circulation motor control output; the output of changes in temperature Electric Machine Control; the output of pattern Electric Machine Control; air blast control output; blower power supply relay control output; compressor control output; green light is adopted in the display part; represent the relay indicating light color with green; blue as the backlight color, the CAN Data Control partly comprises the ESD pipe with bidirectional protective function; jamproof coupling inductance and CAN transceiver etc. altogether.

This utility model automotive air-conditioning controller at first passes through the filtering of " ∏ " shape with car inner sensor signal, car outer sensor signal, the evaporation gauge signal, changes in temperature motor feedback, the speed adjusting module feedback, power supply voltage signal is handled, gather port by AD then and understand external environmental information constantly, can receive the enable signal of the permission AC/PTC work that VMS sends by the CAN bus, information calculations car load current power such as generating set duty, according to current power, adjust the rotating speed of compressor and control refrigerating capacity, receive the instantaneous speed of a motor vehicle that ABS sends in addition, instantaneous speed of a motor vehicle validation signal.Pass through the CAN bus simultaneously with the outer temperature of car, the PTC relay is killed status signal, PTC and compressor horsepower, cooling fan low speed request signal, AC duty, the PTC duty, the air-conditioning fault message, cluster engine request signal etc. sends to VMS, after VMS receives corresponding information, control the start and stop of cooling fan, resources such as the start and stop state of PTC.Master chip is comprehensively by handling the information that collects and user's operation information, come controlled wind speed size, pattern air door state, changes in temperature motor aperture, air inlet selection, compressor state etc. according to set logic, reach best level of comfort in the car to allow.

The automobile electricity provides power supply to whole system respectively, master chip is gathered each sensor voltage value, the subscriber switch signal, the feedback information of the data on the CAN bus and each motor and air blast, then these information are carried out integrated treatment, according to set logic each instruction is flowed to the changes in temperature motor, air blast, the pattern motor, new wind/circulated air motor, peripheral execution units such as refrigeration frequency-changeable compressor and PTC heating, also send partial information on the automobile other nodes by the CAN bus simultaneously, in order to allow the client can be directly acquainted with the duty of air-conditioning system, master chip is exported to the LED driver module with signal, directly shows with green indicating lamp on controller.

Claims

1. the electric automobile automatic air condition controller with the CAN bus is characterized in that it partly is made of master chip control part, power supply module part, console switch part, signal input part part, output control part part, demonstration part, CAN Data Control; The external power source of its power supply module part inserts by a protection diode RS1M-T (D1), land by a filter capacitor C29 then, meet a filter inductance L2 simultaneously, behind filter inductance L2, carrying out filtering with two capacitor C 1, C2 once more lands, add a transient state voltage suppressor ZD1 simultaneously and land and protect, the power supply by above processing is linked into the stable 5V power supply of regulator block output again; External power source inserts by a diode D2, inserting the back lands by a filter capacitor C30, simultaneously through a filter inductance L1, power supply carries out the filtering processing through filtering inductance L 1 back with two capacitor C 4, C3, directly is used for feed system by the power supply after the above processing.

2. a kind of electric automobile automatic air condition controller as claimed in claim 1 with the CAN bus, it is characterized in that the analog signal importation adopted the filtering of " ∏ " type, after wherein the external voltage signal of a bus inner sensor taps into, earlier land filtering by a capacitor C 12, then through a current-limiting resistance R2, with capacitor C 11 filtering once more, directly supply with single-chip microcomputer through the stable voltage signal of above processing and handle behind the voltage process current-limiting resistance R2; Other sensor voltage collection is also identical with this.

3. a kind of electric automobile automatic air condition controller as claimed in claim 1 with the CAN bus, it is characterized in that described controller has adopted the CAN communication technology: two signal line CANH, carry out static with a static releasing tube E1 behind the CANL access controller and eliminate processing, wherein bipod meets holding wire CANH respectively, CANL, another pin ground connection, holding wire CANH and CANL connecting resistance R46 simultaneously then, R47, after landing by a capacitor C 34, receives at an other end of this two resistance 5 pin that model is the CAN transceiver U3 of TJA1040 simultaneously, carry out anti-interference process at holding wire CANH with when holding wire CANL connects the static releasing tube through having coupling inductance F1 altogether, connect two capacitor C 7 then respectively, C8 lands, receive 7 pin of CAN transceiver U3 through the signal CANH of above processing, holding wire CANL receives 6 pin of CAN transceiver U3,8 pin of CAN transceiver U3 need to land through a resistance simultaneously, 1 pin of CAN transceiver U3 is received 29 pin of single-chip microcomputer 9S08DZ32 by a resistance, and 4 pin of CAN transceiver U3 are received 30 pin of single-chip microcomputer 9S08DZ32 by a resistance.