CN202613677U - Air-conditioner compressor and heater controller used in electric car - Google Patents

Abstract

The utility model discloses an air-conditioner compressor and a heater controller used in an electric car. A microprocessor is connected with a car body controller, and sampling modules of a micro-programmed control unit (MCU) are respectively connected with a sensor and a draught fan which are arranged on a cold and hot ventilation door. A general purpose input/output (GPIO) 2 module of the MCU is connected with enable signals of the power-driven air-conditioner compressor through an output end of a low-end driver. A pulse-width modulation (PWM) module of the MCU is connected with an input end of the low-end driver, and an output end of the low-end driver is connected with a power control port of the power-driven air-conditioner compressor and a power control port of the power-driven heater. The GPIO 2 module of the MCU is connected with the power-driven air-conditioner compressor through a power-driven air-conditioner compressor consumed power detection circuit and a power-driven air-conditioner compressor diagnosed code detection circuit, and a single program initiation (SPI) module of the MCU is connected with an SPI port of the low-end driver to read and carry out local process of diagnosed information of short-circuit, overcurrent and overvoltage. The air-conditioner compressor and the heater controller used in the electric car solves the problems that car electronic products are long in development period and an air-conditioner system can not be achieved synchronously in an early development stage of the electric car.

Description

The compressor of air conditioner and the heater controller that are used for electric automobile

Technical field

The utility model discloses a kind of compressor of air conditioner and heater controller that is used for electric automobile, belongs to electric automobile air conditioning for automobiles control technology field.

Background technology:

Now, rapid development of automobile industry is gone on a journey people and is become convenient and swift; But also produced a series of negative effect.Wherein the most noticeable is the constantly soaring of global air pollution exponential sum fuel consume total amount.The proposition of electric automobile (EV) notion has solved this a series of contradiction.Car load factory is employed in the mode that original traditional vehicle is transformed at present, produces electric automobile and carries out the whole vehicle functions test.The quality of electric automobile air conditioning function is a major criterion of estimating a car comfort.External motor corporation is making substantial progress aspect this, the production phase of entering that has, and oneself vehicle of being applied to producing in batches.Domesticly start late in the research aspect this, the electric automobile air-conditioner controller of each automobile vendor still is in research and development and advanced development, does not have ripe electric automobile air-conditioner controller.Traditional vehicle uses the engine drives compressor of air conditioner to freeze, and uses engine-cooling system to heat.

Summary of the invention

The utility model provides a kind of compressor of air conditioner and heater controller that is used for electric automobile, has solved the problem that can't realize air-conditioning system in electric vehicle development early stage synchronously.

Disclosed a kind of compressor of air conditioner and the heater controller that is used for electric automobile of the utility model, its technical solution is following:

The CAN module of microprocessor MCU is connected with car body controller through the CAN transceiver; Receive and resolve the CAN bus message; Obtain behind car load high-tension electricity control state, power brick SOC value, AC state and the evaporimeter temperature sensor value etc.; Judge the restriction of starting of air conditioner condition and power output, simultaneously controller state and self-diagnosis information are uploaded to car body controller; The AD sampling module of MCU is connected with air blast with cold and hot damper positions sensor respectively with cold and hot damper positions signal AD Acquisition Circuit through air blast signal AD Acquisition Circuit; The cold and hot damper positions sensor voltage value of sampling and air blast two ends air quantity magnitude of voltage; The power situation that judges need freeze or heat and need output; According to user's input, control compressor or heater work separately and realize refrigeration and heating function; The GPIO2 module of MCU is connected with the input of low-end driver, and the output of low-end driver is connected with the enable signal of electric air-conditioning compressor, the opening and closing of control electric air-conditioning compression; The PWM module of MCU is connected with the input of low-end driver; The output of low-end driver is connected with electric heater power adjustment interface with the power adjustment interface of electric air-conditioning compressor, and the duty of regulating PWM output signal is recently controlled the power output of electric air-conditioning compressor and electric heater; The GPIO2 module of MCU is connected with the electric air-conditioning compressor with electric air-conditioning compressor diagnostic code detection circuit through electric air-conditioning compressor consumed power testing circuit; Gather the power output of electric air-conditioning compressor and the diagnostic message of output, and duty is uploaded to car body controller through the CAN bus; The GPIO1 module of MCU is connected with electric heater through the INTERLOCK testing circuit, and whether the connection that detects electric heater is reliable; The SPI module of MCU is connected with the SPI interface of low-end driver, reads diagnostic messages such as short circuit, overcurrent, overvoltage and carries out this locality processing.

Disclosed compressor of air conditioner and the heater controller that is used for electric automobile of the utility model, concrete structure is following:

Air blast signal two ends connect AD sampling channel PAD01 and the PAD02 of MCU; Cold and hot damper positions signal connects the AD sampling channel PAD00 of MCU; The MOSI of MCU, MISO, SCK and SS are connected SI, SO, CLK and the CS of low-end driver respectively, read the self-diagnosis information of low-end driver; The PP0 of MCU is connected the IN2 and the IN3 of low-end driver with PP5, the OUT2 of low-end driver is connected the PWM and the STB of electric air-conditioning compressor with OUT3, enables the power output of electric air-conditioning compressor and adjustment electric air-conditioning compressor; The PP1 of MCU connects the IN1 of low-end driver, and the OUT1 of low-end driver connects the PWM of electric heater, the power output of adjustment electric heater; The DIAG of electric air-conditioning compressor is connected PT0 and the PT1 of MCU with POWER, the pwm signal of sampling compressor output reads electric air-conditioning compressor real output value and self-diagnosis information; MCU electricity CAN0RXD and CAN0TXD are connected the TXD and the RXD of low speed CAN bus transceiver respectively, and the CANH of CAN bus transceiver is connected gateway with CANL, the transfer bus message; The PS3 of MCU, PS5 and PS6 are connected EN, STB and the WAKE of CAN bus transceiver respectively, and control CAN bus transceiver enables and wake up CAN bus transceiver controller.

The good effect of the utility model is: it is long to have solved the automobile electronics construction cycle; Can't realize air-conditioning system synchronously early stage in electric vehicle development, the problem of car load test data can not in time, comprehensively be provided, this device keeps the guidance panel of traditional vehicle air-conditioning; Through detecting cold and hot damper positions, air blast air output and some temperature sensor information; The power output of real-time regulated electric heater and motor compressor reaches the function of electric automobile heating and refrigeration, and is providing on the basis of comfortable driving environment; Practice thrift the energy loss of electric automobile, effectively prolonged the continual mileage of pure electric automobile.

Description of drawings

Fig. 1 is the utility model air-conditioning motor compressor and electric heater controller system block diagram;

Fig. 2 is the utility model air-conditioning motor compressor and electric heater controller principle block diagram.

The specific embodiment

Embodiment 1

According to shown in Figure 1; The CAN module of microprocessor MCU is connected with car body controller through the CAN transceiver; Receive and resolve the CAN bus message; Obtain behind car load high-tension electricity control state, power brick SOC value, AC state and the evaporimeter temperature sensor value etc., judge that starting of air conditioner condition and power output limit, and are uploaded to car body controller with controller state and self-diagnosis information simultaneously; The AD sampling module of MCU is connected cold and hot damper positions sensor through air blast signal AD Acquisition Circuit respectively with cold and hot damper positions signal AD Acquisition Circuit and is connected with air blast; The cold and hot damper positions sensor voltage value of sampling and air blast two ends air quantity magnitude of voltage; The power situation that judges need freeze or heat and need output; According to user's input, control compressor or heater work separately and realize refrigeration and heating function; The GPIO2 module of MCU is connected with the input of low-end driver, and the output of low-end driver is connected with the enable signal of electric air-conditioning compressor, the opening and closing of control electric air-conditioning compression; The PWM module of MCU is connected with the input of low-end driver; The output of low-end driver is connected with electric heater power adjustment interface with the power adjustment interface of electric air-conditioning compressor, and the duty of regulating PWM output signal is recently controlled the power output of electric air-conditioning compressor and electric heater; The GPIO2 module of MCU is connected with the electric air-conditioning compressor with electric air-conditioning compressor diagnostic code detection circuit through electric air-conditioning compressor consumed power testing circuit; Gather the power output of electric air-conditioning compressor and the diagnostic message of output, and duty is uploaded to car body controller through the CAN bus; The GPIO1 module of MCU is connected with electric heater through the INTERLOCK testing circuit, and whether the connection that detects electric heater is reliable; The SPI module of MCU is connected with the SPI interface of low-end driver, reads diagnostic messages such as short circuit, overcurrent, overvoltage and carries out this locality processing.

Embodiment 2

According to shown in Figure 2, air blast signal two ends connect AD sampling channel PAD01 and the PAD02 of MCU.Cold and hot damper positions signal connects the AD sampling channel PAD00 of MCU.The MOSI of MCU, MISO, SCK and SS are connected SI, SO, CLK and the CS of low-end driver respectively, read the self-diagnosis information of low-end driver.The PP0 of MCU is connected the IN2 and the IN3 of low-end driver with PP5, the OUT2 of low-end driver is connected the PWM and the STB of electric air-conditioning compressor with OUT3, enables the power output of electric air-conditioning compressor and adjustment electric air-conditioning compressor.The PP1 of MCU connects the IN1 of low-end driver, and the OUT1 of low-end driver connects the PWM of electric heater, the power output of adjustment electric heater.The DIAG of electric air-conditioning compressor is connected PT0 and the PT1 of MCU with POWER, the pwm signal of sampling compressor output reads electric air-conditioning compressor real output value and self-diagnosis information.MCU electricity CAN0RXD and CAN0TXD are connected the TXD and the RXD of low speed CAN bus transceiver respectively, and the CANH of CAN bus transceiver is connected gateway with CANL, the transfer bus message.The PS3 of MCU, PS5 and PS6 are connected EN, STB and the WAKE of CAN bus transceiver respectively, and control CAN bus transceiver enables and wake up CAN bus transceiver controller.

The chip that the utility model CAN bus transceiver uses is: the chip that the TJA1055 of NXP company, MCU use is the MC90SXDP512 of Freescale company, and the chip that low-side driver circuitry is used is: the TLE6220GP of Infineon company.Collection is to be made up of a series of capacitance resistance wares, diode and triode with filter circuit.

The course of work of the utility model is following:

Heating process: the high-tension electricity of at first sampling control state (output or disconnection), power brick SOC (dump energy) value, AC (air conditioning) key-press status, air blast voltage and cold and hot damper positions etc.; Satisfying under the electric heater condition of work; MCU directly controls the power output that low-end driver is regulated the dutycycle control electric heater of PWM output; Sampling interlock out value judges whether connector is locked, guarantees that electric heater reliably connects with controller.

Process of refrigerastion: the high-tension electricity of at first sampling control state (output or disconnection), power brick SOC (dump energy) value, AC (air conditioning) key-press status, air blast voltage and cold and hot damper positions etc.; Satisfying under the electric air-conditioning compressor operating condition, MCU directly controls the power output that low-end driver is regulated the dutycycle control electric air-conditioning compressor of PWM output.

The compressor of air conditioner of electric automobile and heater controller comprise MCU, low-end driver, CAN bus transceiver, air blast signal AD Acquisition Circuit, cold and hot damper positions signal AD Acquisition Circuit, INTERLOCK testing circuit, electric air-conditioning compression consumed power testing circuit and electric air-conditioning compressor diagnostic code detection circuit; MCU is through low-end driver control electric air-conditioning compressor and electric heater; The adjustment power output; Connect with gateway through low speed CAN bus transceiver; Receive bus message, and upload to gateway to state of self and diagnostic message.

Claims (2)

1. one kind is used for the compressor of air conditioner of electric automobile and the controller of heater; It is characterized in that: the CAN module of microprocessor MCU is connected with car body controller through the CAN transceiver; Receive and parsing CAN bus message, simultaneously controller state and self-diagnosis information are uploaded to car body controller; The AD sampling module of MCU is connected cold and hot damper positions sensor and air blast through air blast signal AD Acquisition Circuit respectively with cold and hot damper positions signal AD Acquisition Circuit; The GPIO2 module of MCU is connected with the input of low-end driver, and the output of low-end driver is connected with the enable signal of electric air-conditioning compressor; The PWM module of MCU is connected with the input of low-end driver, and the output of low-end driver is connected with electric heater power adjustment interface with the power adjustment interface of electric air-conditioning compressor; The GPIO2 module of MCU is connected with the electric air-conditioning compressor with electric air-conditioning compressor diagnostic code detection circuit through electric air-conditioning compressor consumed power testing circuit, and duty is uploaded to car body controller through the CAN bus; The GPIO1 module of MCU is connected with electric heater through the INTERLOCK testing circuit; The SPI module of MCU is connected with the SPI interface of low-end driver, reads short circuit, overcurrent, overvoltage diagnostic message and carries out this locality and handle.

2. compressor of air conditioner and the heater controller that is used for electric automobile according to claim 1 is characterized in that:

Air blast signal two ends connect AD sampling channel PAD01 and the PAD02 of MCU; Cold and hot damper positions signal connects the AD sampling channel PAD00 of MCU; The MOSI of MCU, MISO, SCK and SS are connected SI, SO, CLK and the CS of low-end driver respectively, read the self-diagnosis information of low-end driver; The PP0 of MCU is connected the IN2 and the IN3 of low-end driver with PP5, the OUT2 of low-end driver is connected the PWM and the STB of electric air-conditioning compressor with OUT3, enables the power output of electric air-conditioning compressor and adjustment electric air-conditioning compressor; The PP1 of MCU connects the IN1 of low-end driver, and the OUT1 of low-end driver connects the PWM of electric heater, the power output of adjustment electric heater; The DIAG of electric air-conditioning compressor is connected PT0 and the PT1 of MCU with POWER, the pwm signal of sampling compressor output reads electric air-conditioning compressor real output value and self-diagnosis information; MCU electricity CAN0RXD and CAN0TXD are connected the TXD and the RXD of low speed CAN bus transceiver respectively, and the CANH of CAN bus transceiver is connected gateway with CANL, the transfer bus message; The PS3 of MCU, PS5 and PS6 are connected EN, STB and the WAKE of CAN bus transceiver respectively, and control CAN bus transceiver enables and wake up CAN bus transceiver controller.

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