Integrated control device and system
By designing integrated control devices, including filtering, heating control and motor control devices, the problem of low exhaust temperature during heating of on-board air conditioners is solved, and more efficient heating effect and lower waiting time is achieved.
Patent Information
- Application Number
- CN202421051632.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-05-15
AI Technical Summary
When heating the vehicle air conditioner, the exhaust temperature is too low, resulting in poor heating effect, and it is difficult to integrate the heating device with the vehicle compressor, and the increase in communication distance leads to increased communication difficulty. The existing technology has failed to effectively solve this problem.
An integrated control device is designed, including a main chip, a heating control device, a motor control device and a filtering device. The high-voltage electricity output from the vehicle power supply is filtered through the filtering device, and the heating control device and the motor control device are controlled to reduce the communication distance and difficulty.
The power consumption quality of integrated control devices, heating elements and compressors is improved, and the function of the main chip controlling the compressor through the motor control device is realized, which improves the heating effect of the on-board air conditioner and reduces the heating waiting time.
Smart Images
Figure CN222580426U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of control circuit technology, and specifically to an integrated control device and system. Background Art
[0002] When the vehicle air conditioner is heating, the gas refrigerant is pressurized by the vehicle compressor and becomes a high-temperature and high-pressure gas, which enters the heat exchanger (the condenser at this time), condenses and liquefies to release heat. When the vehicle compressor is working, it compresses the gas. During the compression process, the gas pressure increases and the temperature also rises. When the vehicle compressor inhales low gas temperature, the exhaust gas temperature is also low. When the vehicle compressor inhales high gas temperature, the exhaust gas temperature is also high. When the vehicle compressor is heating in the air conditioning system, if the exhaust temperature is too low, the heating effect of the air conditioning system will be very poor.
[0003] Therefore, a heating device can be used to further improve the heating effect. Of course, in general, the integration of the heating device and the vehicle compressor is difficult. For example, the communication distance between the heating device and the vehicle compressor increases, which increases the communication difficulty.
[0004] To address the above problems, no effective solution has been proposed yet. Utility Model Content
[0005] The purpose of this application is to provide an integrated control device and system to solve the technical problems raised in the above background technology.
[0006] To achieve the above objectives, this application discloses the following technical solutions:
[0007] In the first aspect, the present application discloses an integrated control device, comprising a main chip, a heating control device, a motor control device and a first filtering device, wherein the heating control device comprises a heating element, the motor control device comprises a three-phase half bridge and a compressor electrically connected to the output end of the three-phase half bridge, the first filtering device is used to be electrically connected to the high-voltage output end of a vehicle power supply and filter the high-voltage electricity output by the vehicle power supply, the first filtering device is electrically connected to the heating element and the three-phase half bridge, respectively, so that the first filtering device is configured to transmit the high-voltage electricity filtered by the first filtering device to the heating element and the three-phase half bridge; the main chip is signal-connected to the three-phase half bridge and the motor control device, respectively.
[0008] Through the above, the high voltage electricity output by the vehicle power supply is filtered through the first filtering device, the heating element is controlled through the heating control device, and the compressor is controlled through the motor control device, thereby improving the power quality of the integrated control device, the heating element and the compressor; realizing the function of the main chip controlling the compressor through the motor control device; and realizing the integration of motor control and heating control.
[0009] Preferably, it also includes a second filtering device, the input end of the second filtering device is used to be electrically connected to the low-voltage output end of the vehicle power supply and filter the low-voltage electricity output by the vehicle power supply, and the second filtering device is electrically connected to the main chip, so that the first filtering device is configured to transmit the low-voltage electricity filtered by the second filtering device to the main chip.
[0010] Through the above, effective filtering of the low-voltage electricity of the vehicle power supply is achieved, and the power quality of the integrated control device is improved.
[0011] Preferably, the second filtering device is used to suppress the external radiation of internal interference. The input end of the second filtering device is electrically connected to the low-voltage output end of the vehicle-mounted power supply. It includes multiple filtering modules connected in series in sequence. Each of the filtering modules includes a second common-mode inductor and multiple second differential-mode inductors. Each pin of each second common-mode inductor is connected to a second differential-mode inductor. A safety capacitor for grounding is arranged between each pin of at least one second common-mode inductor and the second differential-mode inductor corresponding to the pin, or a safety capacitor for grounding is arranged between the second differential-mode inductors of two adjacent second filtering devices.
[0012] Through the above, the interference of the external radiation of the internal interference on the control components is reduced by the second filtering device, thereby improving the reliability of the control components.
[0013] Preferably, the first filtering device is used to suppress input ripple current, and includes a first common-mode inductor, a first differential-mode inductor, a first protection capacitor unit, a thin film capacitor unit and a second protection capacitor unit. The input ends of the first common-mode inductor are electrically connected to the high-voltage output end of the vehicle power supply, the positive electrode of the thin film capacitor unit and the input end of the first protection capacitor unit are connected to the first output end of the first common-mode inductor through the first differential-mode inductor, and the negative electrode of the thin film capacitor unit and the input end of the second protection capacitor unit are connected to the second output end of the first common-mode inductor through the first differential-mode inductor.
[0014] Through the above, the first filtering device can effectively suppress the input ripple current, reduce the interference of the input ripple current on the control components, and improve the reliability of the control components.
[0015] Preferably, it also includes a low-voltage control circuit, the low-voltage control circuit includes a first drive circuit and a second drive circuit, the heating control device includes a heating drive circuit, the first drive circuit and the heating drive circuit are electrically connected, and the second drive circuit is electrically connected to the main chip, wherein the output voltage of the second drive circuit is less than the output voltage of the first drive circuit.
[0016] Through the above, it is achieved that the low voltage electricity output by the vehicle power supply is converted into the working voltage required by each circuit in the integrated control device.
[0017] Preferably, the heating control device comprises a heating control switch, wherein the heating control switch is signal-connected to the heating drive circuit, and the heating control switch is electrically connected to an output end of the first filtering device.
[0018] Through the above, effective control of the heating element is achieved through the heating control switch, and effective monitoring of the heating element is achieved through the signal connection between the heating control switch and the heating drive circuit; the main chip can control the compressor according to the operation of the heating element, so that the compressor can start the heating process faster, reduce the heating waiting time, and improve the heating effect of the vehicle air conditioner.
[0019] Preferably, the low-voltage control circuit further includes a third drive circuit, and an input end of the third drive circuit is electrically connected to an output end of the first drive circuit.
[0020] Through the above, the control of the motor control device is achieved.
[0021] Preferably, it also includes a signal transmission module, which is configured to receive the control signal of the vehicle-mounted CAN bus and transmit the control signal to the main chip so that the main chip receives the control signal and executes it; the signal transmission module includes a signal isolation circuit, and the output end of the second drive circuit is electrically connected to the first input end of the signal isolation circuit; the low-voltage control circuit also includes a transformer circuit, the input end of the transformer circuit is electrically connected to the output end of the second filter device, and the output end of the transformer circuit is electrically connected to the second input end of the signal isolation circuit.
[0022] Through the above, the communication between the main chip and the vehicle CAN bus is realized through the signal transmission module, and the protection of the main chip is realized through the signal isolation circuit.
[0023] Preferably, a sensor is further included, and the sensor is signal-connected to the main chip.
[0024] Through the above, real-time monitoring of the operating status is achieved through sensors, and feedback control is achieved through the main chip.
[0025] In a second aspect, the present application discloses a vehicle integrated control system, comprising:
[0026] An on-board power supply, the on-board power supply having a high-voltage output terminal and a low-voltage output terminal;
[0027] An integrated control device as described in any one of the above;
[0028] a heating chamber, in which the heating element of the integrated control device is disposed;
[0029] The heating chamber is provided with a heat conducting medium for transferring heat to the cab and / or the compressor.
[0030] Through the above, the function of converting the vehicle power supply into the working voltage required by each control component is realized through the integrated control device, and the compressor and heating element are effectively controlled through the same main chip, thereby improving the heating effect in the vehicle.
[0031] Beneficial effects: The integrated control device and system of the present application suppress input ripple current through the first filtering device, and reduce the external radiation of internal interference through the second filtering device, thereby improving the reliability of the integrated control device; the heating control device and the motor control device are integrated to improve the integration of the controller, reduce space occupancy, and reduce the communication distance and communication difficulty between the heating element and the compressor. The compressor can be controlled according to the operating status of the heating element, thereby enabling the compressor to start the heating process faster, reduce the heating waiting time, and improve the heating effect of the vehicle air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.
[0033] Figure 1 A schematic block diagram of power supply of an integrated control device provided in an embodiment of the present application;
[0034] Figure 2 A schematic diagram of signal transmission of an integrated control device provided in an embodiment of the present application;
[0035] Figure 3 A circuit schematic diagram of a second filtering device provided in an embodiment of the present application;
[0036] Figure 4 A circuit schematic diagram of a first filtering device provided in an embodiment of the present application;
[0037] Figure 5 A specific example provided for the embodiments of the present application. DETAILED DESCRIPTION
[0038] The technical solutions in the embodiments of the present application are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.
[0039] In this article, the term "comprising" is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "comprising..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0040] Combination Figure 1 and Figure 2 The first aspect of this embodiment discloses an integrated control device, including a main chip, a heating control device, a motor control device and a first filtering device, wherein the heating control device includes a heating element, the motor control device includes a three-phase half bridge and a compressor electrically connected to the output end of the three-phase half bridge, the first filtering device is used to be electrically connected to the high-voltage output end of the vehicle power supply and filter the high-voltage electricity output by the vehicle power supply, the first filtering device is electrically connected to the heating element and the three-phase half bridge respectively, so that the first filtering device is configured to transmit the high-voltage electricity filtered by the first filtering device to the heating element and the three-phase half bridge; the main chip is signal-connected to the three-phase half bridge and the motor control device respectively.
[0041] The high voltage electricity output by the vehicle power supply is filtered through the first filtering device, the heating element is controlled through the heating control device, and the compressor is controlled through the motor control device, thereby improving the power quality of the integrated control device, the heating element and the compressor; the function of the main chip controlling the compressor through the motor control device is realized by connecting the main chip with the three-phase half-bridge and the motor control device signals respectively.
[0042] Specifically, it also includes a second filtering device, the input end of the second filtering device is used to be electrically connected to the low-voltage output end of the vehicle power supply and filter the low-voltage electricity output by the vehicle power supply, and the second filtering device is electrically connected to the main chip, so that the second filtering device is configured to transmit the low-voltage electricity filtered by the second filtering device to the main chip.
[0043] The second filtering device realizes effective filtering of the low-voltage electricity of the vehicle power supply, thereby improving the power quality of the integrated control device.
[0044] Specifically, the second filtering device is used to suppress the external radiation of internal interference. The input end of the second filtering device is electrically connected to the low-voltage output end of the vehicle power supply. It includes multiple filtering modules connected in series in sequence. Each filtering module includes a second common-mode inductor and multiple second differential-mode inductors. Each pin of each second common-mode inductor is connected to a second differential-mode inductor. A safety capacitor for grounding is arranged between each pin of at least one second common-mode inductor and the second differential-mode inductor corresponding to the pin, or a safety capacitor for grounding is arranged between the second differential-mode inductors of two adjacent second filtering devices.
[0045] Combination Figure 3The circuit connection method of the second filtering device is as follows: the cathode of the voltage stabilizing diode D22, the anode of the diode D7 and the pin 1 of the safety capacitor CY12 are all connected to the positive electrode of the low-voltage power output by the vehicle power supply, the pin 2 of the safety capacitor CY12 is connected to the protective conductor PE, the specification of the safety capacitor CY12 is 10pF, the cathode of the diode D7 is connected to the pin 2 of the differential mode inductor LB3, the pin 1 of the differential mode inductor LB3, the pin 1 of the safety capacitor CY9 and the pin 2 of the capacitor C17 are all connected to the pin 3 of the common mode inductor T1, the pin 2 of the safety capacitor CY9 is connected to the protective conductor PE, the specification of the safety capacitor CY9 is 50pF; the pin 1 of the differential mode inductor LB4, the pin 2 of the safety capacitor CY10 and Pin 1 of capacitor C17 is connected to pin 2 of common-mode inductor T1, pin 1 of safety capacitor CY10 is connected to protective conductor PE, the specification of safety capacitor CY10 is 50pF, the positive pole of voltage zener diode D22, pin 2 of differential-mode inductor LB4 and pin 2 of safety capacitor CY11 are all connected to the negative pole of the low-voltage power output by the vehicle power supply, pin 1 of safety capacitor CY11 is connected to protective conductor PE, the specification of safety capacitor CY11 is 10pF; pin 4 of common-mode inductor T1 is connected to pin 2 of differential-mode inductor LB6, pin 1 of common-mode inductor T1 is connected to pin 2 of differential-mode inductor LB7, pin 1 of differential-mode inductor LB6, the positive pole of polarity capacitor E10 and pin 1 of safety capacitor CY5 are all connected to the positive pole of differential-mode inductor LB7, the positive pole of differential-mode inductor LB6, the positive pole of polarity capacitor E10 and the positive pole of safety capacitor CY5 are all connected to the negative pole of the low-voltage power output by the vehicle power supply, the positive pole of differential-mode inductor LB4 ... differential-mode inductor LB6. It is connected to pin 2 of the differential mode inductor LB2, and pin 2 of the safety capacitor CY5 is connected to the protective conductor PE. The specification of the safety capacitor CY5 is 100pF; pin 1 of the differential mode inductor LB7, the negative pole of the polarity capacitor E10 and pin 2 of the safety capacitor CY6 are all connected to pin 2 of the differential mode inductor LB1, and pin 1 of the safety capacitor CY6 is connected to the protective conductor PE. The specification of the safety capacitor CY6 is 100pF; pin 1 of the differential mode inductor LB2 and pin 2 of the capacitor C54 are all connected to pin 3 of the common mode inductor T4, pin 1 of the differential mode inductor LB1 and pin 1 of the capacitor C54 are all connected to pin 2 of the common mode inductor T4, pin 1 of the safety capacitor CY1, pin 2 of the inductor L1, pin 1 of the capacitor C53 and The negative electrode of polar capacitor E8 is connected to pin 4 of common mode inductor T4. Pin 2 of safety capacitor CY2, pin 2 of inductor L2, pin 2 of capacitor C53 and the negative electrode of polar capacitor E8 are connected to pin 1 of common mode inductor T4. Pin 2 of safety capacitor CY1 is connected to protective conductor PE. The specification of safety capacitor CY1 is 1nF. Pin 1 of safety capacitor CY2 is connected to protective conductor PE. The specification of safety capacitor CY2 is 1nF. Pin 1 of inductor L1, pin 1 of safety capacitor CY3, pin 2 of capacitor C52 and pin 2 of resistor R111 are connected to output the positive electrode of 12V voltage. Pin 2 of safety capacitor CY3 is connected to protective conductor PE. The specification of safety capacitor CY3 is 4.7uF; Pin 1 of inductor L2, Pin 2 of safety capacitor CY4, Pin 1 of capacitor C52 and Pin 1 of resistor R111 are connected to output the negative pole of 12V voltage, Pin 2 of safety capacitor CY4 is connected to the protective conductor PE, and the specification of safety capacitor CY4 is 4.7uF. .
[0046] In this embodiment, the safety capacitor used is a Y-type safety capacitor. After the failure of this type of capacitor, it will not cause electric shock and will not endanger personal safety. The safety capacitor also plays the role of power supply filtering, filtering common-mode interference and differential-mode interference respectively. Differential-mode inductance refers to an inductor element that connects two loops in a circuit at the same time, and the current directions in the two loops are opposite; its main function is to enhance the signal in the loop while suppressing some noise interference. The use of differential-mode inductance can effectively reduce the influence of common-mode noise and ground noise, and improve the quality and reliability of the signal. In this embodiment, the differential-mode inductor is mainly used to suppress differential-mode interference. Differential-mode interference refers to electromagnetic interference between transmission lines, such as Figure 4 In the corresponding second filtering device, differential mode interference is the interference generated between +12V and -12V. Common-mode inductance refers to an inductor element that connects two loops in a circuit at the same time, and the current directions in the two loops are consistent; its main function is to offset some common electromagnetic interference and noise, and ensure the relative independence between the loops. The use of common-mode inductance can effectively reduce noise interference and electromagnetic radiation, and reduce the loss of transmission lines. In this embodiment, the common-mode inductance is mainly used to suppress common-mode interference. Common-mode interference refers to the electromagnetic interference between the transmission line and the reference point, such as Figure 4 In the corresponding second filtering device, common mode interference is the interference generated between +12V, -12V and the protective conductor PE. The adjacent common mode inductor T is isolated by differential mode inductor and safety capacitor to isolate the differential mode interference signal and the common mode interference signal. The safety capacitor grounding is to connect one leg of the safety capacitor to PE, which also plays a protective role.
[0047] The second filtering device reduces the interference of the internal interference to the control components caused by external radiation, thereby improving the reliability of the control components.
[0048] Specifically, the first filtering device is used to suppress input ripple current, and includes a first common-mode inductor, a first differential-mode inductor, a first protection capacitor unit, a thin film capacitor unit, and a second protection capacitor unit. The input ends of the first common-mode inductor are electrically connected to the high-voltage output end of the vehicle power supply, the positive electrode of the thin film capacitor unit and the input end of the first protection capacitor unit are connected to the first output end of the first common-mode inductor through the first differential-mode inductor, and the negative electrode of the thin film capacitor unit and the input end of the second protection capacitor unit are connected to the second output end of the first common-mode inductor through the first differential-mode inductor.
[0049] Combination Figure 4As shown, the first protection capacitor unit may include capacitors C59, C58 and C6 connected in parallel, the thin film capacitor unit may include thin film capacitors EC1, EC2, EC3, EC4, EC5, EC6, EC7 and EC8 connected in parallel, and the second protection capacitor unit includes capacitors C79, C81 and C84 connected in parallel. Obviously, the number of capacitors in the first protection capacitor unit and the second protection capacitor unit can be increased or decreased as needed. The number of thin film capacitors in the thin film capacitor unit can also be increased or decreased as needed.
[0050] The connection method of the first filtering device is as follows: the 3rd pin of the first common-mode inductor T2 is connected to the positive electrode of the high voltage output by the vehicle power supply, the 4th pin of the first common-mode inductor T2 is connected to the negative electrode of the high voltage output by the vehicle power supply, the negative electrode of the film capacitor EC1, the negative electrode of the film capacitor EC2, the negative electrode of the film capacitor EC3, the negative electrode of the film capacitor EC4, the negative electrode of the film capacitor EC5, the negative electrode of the film capacitor EC6, the negative electrode of the film capacitor EC7, the negative electrode of the film capacitor EC8, the 2nd pin of the capacitor C79, the 2nd pin of the capacitor C81 and the 2nd pin of the capacitor C84 are all connected to the 1st pin of the first common-mode inductor T2, and the output after the connection is the negative electrode of the high voltage, the 1st pin of the capacitor C79, the 1st pin of the capacitor C81 and the 1st pin of the capacitor C84 are all connected to the protection conductor PE1 is connected; pin 1 of the first differential mode inductor LB5 and pin 4 of the first differential mode inductor LB5 are both connected to pin 2 of the first common mode inductor T2, pin 2 of the first differential mode inductor LB5, the positive electrode of film capacitor EC1, the positive electrode of film capacitor EC2, the positive electrode of film capacitor EC3, the positive electrode of film capacitor EC4, the positive electrode of film capacitor EC5, the positive electrode of film capacitor EC6, the positive electrode of film capacitor EC7, the positive electrode of film capacitor EC8, pin 2 of capacitor C59, pin 2 of capacitor C58 and pin 2 of capacitor C6 are all connected to pin 3 of the first differential mode inductor LB5, and after being connected, the output is the positive electrode of high voltage, pin 1 of capacitor C59, pin 1 of capacitor C58 and pin 1 of capacitor C6 are all connected to the protective conductor PE1.
[0051] The first filtering device can be equivalent to LC filtering, which has a good suppression effect on the input ripple current. The common mode inductance is greater than 1mH, and the differential mode inductance is greater than 2.7*10 -2mH, the capacitance of the film capacitor EC is 3.5uF / 650V. There are 8 film capacitors EC in parallel in the high-voltage filter circuit, totaling 28uF. The film capacitor EC can be but not limited to MKP4; the presence of input ripple current will cause the waveform of the output current to be unstable in the load circuit, which affects the control of the compressor and the heating element in this embodiment, so the input ripple current must be suppressed; the main function of the film capacitor is to store charge, and to store electrical energy by forming an electric field between conductors, which plays a regulating role in the circuit, can withstand high withstand voltage, and is suitable for use in high-voltage circuits. In addition, film capacitors also play the role of current buffering, resonance bypass, and electromagnetic interference suppression in electronic circuits.
[0052] The first filtering device effectively suppresses the input ripple current, reduces the interference of the input ripple current on the control components, and improves the reliability of the control components.
[0053] Specifically, it also includes a low-voltage control circuit, the low-voltage control circuit includes a first drive circuit and a second drive circuit, the heating control device includes a heating drive circuit, the first drive circuit and the heating drive circuit are electrically connected, and the second drive circuit is electrically connected to the main chip, wherein the output voltage of the second drive circuit is less than the output voltage of the first drive circuit.
[0054] The low-voltage control circuit converts the low-voltage electricity output by the vehicle power supply into the working voltage required by each circuit in the integrated control device.
[0055] Specifically, the heating control device includes a heating control switch, wherein the heating control switch is connected to the heating drive circuit signal, and the heating control switch is electrically connected to the output end of the first filtering device.
[0056] The heating element is effectively controlled through the heating control switch, and the heating element is effectively monitored by connecting the heating control switch with the heating drive circuit signal; the main chip can control the compressor according to the operation of the heating element, so that the compressor can start the heating process faster, reduce the heating waiting time, and improve the heating effect of the vehicle air conditioner.
[0057] Specifically, the low-voltage control circuit further includes a third drive circuit, and an input end of the third drive circuit is electrically connected to an output end of the first drive circuit.
[0058] The motor control device is controlled by electrically connecting the input end of the third drive circuit to the output end of the first drive circuit.
[0059] Specifically, it also includes a signal transmission module, which is configured to receive a control signal from the vehicle-mounted CAN bus and transmit the control signal to the main chip so that the main chip receives the control signal and executes it; the signal transmission module includes a signal isolation circuit, and the output end of the second drive circuit is electrically connected to the first input end of the signal isolation circuit; the low-voltage control circuit also includes a transformer circuit, the input end of the transformer circuit is electrically connected to the output end of the second filter device, and the output end of the transformer circuit is electrically connected to the second input end of the signal isolation circuit.
[0060] The communication between the main chip and the vehicle-mounted CAN bus is realized through the signal transmission module, and the protection of the main chip is achieved through the signal isolation circuit.
[0061] Specifically, it also includes a sensor, and the sensor is connected to the main chip signal.
[0062] Real-time monitoring of the operating status is achieved through sensors, and feedback control is achieved through the main chip.
[0063] A second aspect of this embodiment discloses a vehicle integrated control system, including:
[0064] The vehicle-mounted power supply has a high-voltage output terminal and a low-voltage output terminal;
[0065] An integrated control device as any of the above;
[0066] a heating chamber, wherein a heating element of the integrated control device is disposed in the heating chamber;
[0067] A heat transfer medium for transferring heat to the cab and / or the compressor is arranged in the heating chamber.
[0068] The integrated control device realizes the function of converting the vehicle power supply into the working voltage required by each control component, and also realizes effective control of the compressor and heating element through the same main chip; the heating effect inside the vehicle is improved by arranging a heat conducting medium in the heating chamber for transferring heat to the cab and / or the compressor.
[0069] Combination Figure 5 As shown, a specific example of this embodiment, wherein the function of the second filtering device is realized by a low-voltage filtering circuit, the function of the first filtering device is realized by a high-voltage filtering circuit, the function of the low-voltage control circuit is realized by an auxiliary source control circuit, an isolation transformer, a 10V to 5V circuit, a 5.5V to 3.3V circuit and a driving power supply circuit, the function of the signal isolation circuit is realized by a CAN interface circuit and a communication isolation circuit, the function of the third driving circuit is realized by an IGBT driving circuit, the function of the heating driving circuit is realized by a PTC driving circuit, and the function of the heating control switch is realized by an IGBT.
[0070] In summary, the integrated control device and system of the present embodiment suppress input ripple current through the first filtering device, and reduce the external radiation of internal interference through the second filtering device, thereby improving the reliability of the integrated control device; the heating control device and the motor control device are integrated to improve the integration of the controller, reduce space occupancy, and reduce the communication distance and communication difficulty between the heating element and the compressor. The compressor can be controlled according to the operating status of the heating element, thereby enabling the compressor to start the heating process faster, reduce the heating waiting time, and improve the heating effect of the vehicle air conditioner.
[0071] The heating element can be a combination of one or more of a PTC heater, a thin film heater and a thick film heater. In actual implementation, the heating body 31 is set as a PTC heater. Compared with other heaters, the PTC heater has the characteristics of rapid heating, automatic temperature control in the event of a fan failure, and a long service life, which can improve the stability of use and reduce the risk of failure.
[0072] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. An integrated control device, characterized in that: It includes a main chip, a heating control device, a motor control device and a first filtering device, wherein the heating control device includes a heating element, the motor control device includes a three-phase half bridge and a compressor electrically connected to the output end of the three-phase half bridge, the first filtering device is used to be electrically connected to the high-voltage output end of the vehicle power supply and filter the high-voltage electricity output by the vehicle power supply, the first filtering device is electrically connected to the heating element and the three-phase half bridge respectively, so that the first filtering device is configured to transmit the high-voltage electricity filtered by the first filtering device to the heating element and the three-phase half bridge; the main chip is signal-connected to the three-phase half bridge and the motor control device respectively.
2. The integrated control device according to claim 1, characterized in that: It also includes a second filtering device, the input end of the second filtering device is used to be electrically connected to the low-voltage output end of the vehicle power supply and filter the low-voltage electricity output by the vehicle power supply, and the second filtering device is electrically connected to the main chip, so that the second filtering device is configured to transmit the low-voltage electricity filtered by the second filtering device to the main chip.
3. The integrated control device according to claim 2, characterized in that: The second filtering device is used to suppress the external radiation of internal interference. The input end of the second filtering device is electrically connected to the low-voltage output end of the vehicle-mounted power supply. It includes multiple filtering modules connected in series in sequence. Each of the filtering modules includes a second common-mode inductor and multiple second differential-mode inductors. Each pin of each second common-mode inductor is connected to a second differential-mode inductor. A safety capacitor for grounding is arranged between each pin of at least one second common-mode inductor and the second differential-mode inductor corresponding to the pin, or a safety capacitor for grounding is arranged between the second differential-mode inductors of two adjacent second filtering devices.
4. The integrated control device according to claim 1, characterized in that: The first filtering device is used to suppress input ripple current, and includes a first common-mode inductor, a first differential-mode inductor, a first protection capacitor unit, a thin film capacitor unit, and a second protection capacitor unit. The input ends of the first common-mode inductor are electrically connected to the high-voltage output end of the vehicle power supply, the positive electrode of the thin film capacitor unit and the input end of the first protection capacitor unit are connected to the first output end of the first common-mode inductor through the first differential-mode inductor, the negative electrode of the thin film capacitor unit and the input end of the second protection capacitor unit are connected to the second output end of the first common-mode inductor through the first differential-mode inductor, and the output ends of the first protection capacitor unit and the second protection capacitor unit are grounded.
5. The integrated control device according to claim 1, characterized in that: It also includes a low-voltage control circuit, which includes a first drive circuit and a second drive circuit. The heating control device includes a heating drive circuit. The first drive circuit and the heating drive circuit are electrically connected, and the second drive circuit is electrically connected to the main chip, wherein the output voltage of the second drive circuit is less than the output voltage of the first drive circuit.
6. The integrated control device according to claim 5, characterized in that: The heating control device comprises a heating control switch, wherein the heating control switch is signal-connected to the heating drive circuit, and the heating control switch is electrically connected to an output end of the first filtering device.
7. The integrated control device according to claim 5, characterized in that: The low voltage control circuit further includes a third driving circuit, an input end of the third driving circuit is electrically connected to an output end of the first driving circuit.
8. The integrated control device according to claim 5, characterized in that: It also includes a signal transmission module, which is configured to receive a control signal from a vehicle-mounted CAN bus and transmit the control signal to the main chip so that the main chip receives the control signal and executes it; the signal transmission module includes a signal isolation circuit, and the output end of the second drive circuit is electrically connected to the first input end of the signal isolation circuit; the low-voltage control circuit also includes a transformer circuit, and the input end of the transformer circuit is electrically connected to the output end of the second filter device, and the output end of the transformer circuit is electrically connected to the second input end of the signal isolation circuit.
9. The integrated control device according to claim 1, characterized in that: It also includes a sensor, which is connected to the main chip signal.
10. A vehicle integrated control system, characterized in that: include: An on-board power supply, the on-board power supply having a high-voltage output terminal and a low-voltage output terminal; The integrated control device according to any one of claims 1 to 9; a heating chamber, in which the heating element of the integrated control device is disposed; The heating chamber is provided with a heat conducting medium for transferring heat to the cab and / or the compressor.