CN203084530U - Control system for PTC electric heater used for pure electric automobile - Google Patents
Control system for PTC electric heater used for pure electric automobile Download PDFInfo
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- CN203084530U CN203084530U CN2013200527059U CN201320052705U CN203084530U CN 203084530 U CN203084530 U CN 203084530U CN 2013200527059 U CN2013200527059 U CN 2013200527059U CN 201320052705 U CN201320052705 U CN 201320052705U CN 203084530 U CN203084530 U CN 203084530U
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- electric heater
- circuit
- ptc electric
- ptc
- voltage
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- 238000001514 detection method Methods 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims abstract description 16
- 238000005485 electric heating Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 238000004378 air conditioning Methods 0.000 description 5
- 239000002826 coolant Substances 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000036760 body temperature Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Control Of Resistance Heating (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The utility model relates to the technical field of automobile control. A control system for a PTC electric heater used for a pure electric automobile disclosed by the utility model includes a CPU module, a low-voltage power supply circuit, a high-voltage power supply circuit, two IGBT driving circuit, a CAN bus communication interface circuit, three temperature detecting circuits, a high-voltage current detecting circuit, three PWM signal output circuit, an input capturing channel circuit and two mode switches. The control system for the PTC electric heater used for the pure electric automobile has functions of PTC electric heating core temperature detection, IGBT temperature detection and high-voltage current monitoring. IGBT output can be cut off automatically according to a state of the control system for the PTC electric heater used for the pure electric automobile. Therefore, the reliability and the safety performance of the pure electric automobile for utilizing a PTC for heating are guaranteed effectively.
Description
Technical Field
The utility model belongs to the technical field of vehicle control, in particular to a PTC electric heater control system for pure electric vehicles air conditioner warm braw system.
Background
Under the current huge challenge that the global automobile industry faces financial crisis and energy environment problems, the electric automobile is developed to realize electrification of an automobile energy power system, the strategic transformation of the traditional automobile industry is promoted, and wide consensus is formed internationally. On a traditional gasoline engine automobile, under normal running conditions, the temperature of engine coolant is usually 90 to 110 ℃, and the heat is used for generating compartment warm air and defrosting by an air conditioning system. On a pure electric vehicle, because an engine is removed, the waste heat of the engine can not be utilized, and the temperature of the cooling liquid of the motor is usually not more than 60 ℃, the functions of warm air and defrosting of a carriage cannot be met. The utilization of the waste heat of the engine coolant to realize warm air has an obvious defect that the warm air can be generated only after the temperature of the engine coolant rises, so that the defrosting function can be realized only in about 10 minutes in cold weather in winter.
Disclosure of Invention
For solving the problem that exists among the prior art, the utility model provides a PTC electric heater control system for pure electric vehicles can effective control pure electric vehicles utilize PTC electric heater to carry out reliability and security that heats.
The utility model provides a PTC electric heater control system for pure electric vehicles, include: the device comprises a CPU module, a low-voltage power supply circuit, a high-voltage power supply circuit, two IGBT (insulated gate bipolar transistor) driving circuits, a CAN (controller area network) bus communication interface circuit, three temperature detection circuits, a high-voltage current detection circuit, three PWM (pulse-width modulation) signal output circuits, an input capture channel circuit and two mode switches; wherein,
the CPU module is used for carrying out system operation, logic analysis and system control;
the low-voltage power supply circuit is used for providing working voltages of the singlechip of the CPU module and other chips in the circuit of the system;
the high-voltage power supply circuit is used for providing direct-current high voltage for the IGBT driving circuit;
the IGBT driving circuit controls the on-off of the IGBT to control whether the PTC electric heating core body is heated or not;
the CAN bus communication interface circuit is used for realizing CAN communication between the system and a superior controller, receiving the information of the temperature inside the vehicle, the temperature outside the vehicle and the target set temperature sent by the superior controller and sending the specific working parameters of the PTC electric heater to the superior controller;
the temperature detection circuit is used for detecting the system temperature, the temperature of the IGBT driving chip and the temperature of the PTC electric heating core body;
the high-voltage current detection circuit is used for measuring the high-voltage current of the PTC electric heater during working;
the PWM signal output circuit is used for controlling whether the IGBT driving circuit works or not and is used for representing the power of the PTC electric heater during working by changing the duty ratio in a PWM control mode;
the input capturing channel circuit is used for acquiring a PWM signal sent by a superior controller in a PWM control mode;
and the mode switch is used for switching the mode of acquiring the target power information sent by the superior controller by the PTC electric heater.
The mode of acquiring the target power information sent by the superior controller by the PTC electric heater comprises a CAN bus control mode and a PWM control mode. Under the CAN bus control mode, the PTC electric heater receives a target power instruction sent by a superior controller through a CAN bus; in the PWM control mode, the PTC electric heater reads the duty ratio of a PWM signal sent by a superior controller to control the output power of the PTC electric heater.
The high-voltage power supply circuit and the low-voltage power supply circuit are isolated from each other.
The system hardware can bear high-voltage with the DC 600V grade, and the high-voltage power supply circuit can convert the DC 600V into 13.5V.
And the CAN bus communication interface hardware adopts a photoelectric coupler for isolation, and single-wire signals transmitted and received by the CAN controller are converted into differential signals.
The utility model has the advantages that: the PTC electric heater has adjustable output power, can quickly reach the expected set target, has good comfort, has low power consumption after stable output, and can effectively reduce the power consumption of the air-conditioning and warm-air system of the pure electric vehicle; the PTC electric heater control system has sub-monitoring capabilities of voltage, current, temperature and the like, and can effectively ensure the safety and reliability of the system; the PTC electric heater control system has two control modes and is suitable for various pure electric vehicle schemes.
Drawings
Fig. 1 is a hardware configuration diagram of a control system proposed in embodiment 1.
Fig. 2 is a schematic diagram of the heating control of the PTC electric heater body by the system proposed in embodiment 2.
Detailed Description
For a better understanding of the design objectives, features and advantages of a PTC electric heater control system for a pure electric vehicle, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Example 1
The utility model provides a PTC electric heater control system for pure electric vehicles, its hardware component is shown as figure 1, include: the system comprises a CPU module 1, a low-voltage power supply circuit 2, a high-voltage power supply circuit 3, two IGBT (insulated gate bipolar transistor) driving circuits 4, a CAN bus communication interface circuit 5, three temperature detection circuits 6, a high-voltage current detection circuit 7, three PWM (pulse width modulation) signal output circuits 8, an input capture channel circuit 9 and two mode switches 10. Wherein:
the CPU module 1 preferably uses an 8-bit microcontroller with low power consumption for performing system operations, logic analysis, and controlling system operations through input/output channels.
And the low-voltage power supply circuit 2 is used for providing power-on voltages of the singlechip of the CPU module and other chips and also providing a logic reference level for the system. In this embodiment, the power-on voltage of the single chip microcomputer and other chips is generally 5V, and the low-voltage power supply circuit 2 can convert the low voltage 12V into 5V.
And the high-voltage power supply circuit 3 is used for providing direct-current high voltage for the IGBT drive circuit 4 and can convert the direct-current high voltage (70V to 600V) into 13.5V.
In this embodiment, the high-voltage power supply circuit 3 and the low-voltage power supply circuit 2 are designed in an isolated manner, so that the anti-interference capability of the system can be effectively enhanced.
And the IGBT driving circuit 4 controls the on and off of the IGBT to control whether the PTC electric heating core body is heated or not.
And the CAN bus communication interface circuit 5 is used for realizing CAN communication between the PTC electric heater control system and a superior controller, receiving the information of the temperature inside the vehicle, the temperature outside the vehicle and the target set temperature sent by the superior controller, and sending specific working parameters of the PTC electric heater to the superior controller. The CAN bus communication interface circuit 5 adopts a photoelectric coupler for isolation on hardware, converts a single-wire signal transmitted and received by a CAN controller into a differential signal, and CAN effectively improve the anti-interference capability of CAN bus communication.
And the temperature detection circuit 6 is used for detecting the system temperature, the temperature of the IGBT driving chip and the temperature of the PTC electric heating core body.
And the high-voltage current detection circuit 7 is used for measuring the high-voltage current of the PTC electric heater during working.
And the PWM signal output circuit 8 has three paths, wherein two paths are used for controlling whether the IGBT driving circuit works, and the third path is used for representing the power of the PTC electric heater when the PTC electric heater works by changing the duty ratio in the PWM control mode.
And the input capture channel circuit 9 is used for acquiring a PWM signal sent by a superior controller in a PWM control mode.
And the mode switch 10 is used for switching the mode of acquiring the target power information sent by the superior controller by the PTC electric heater, and the PTC electric heater CAN acquire the power information sent by the superior controller through a CAN bus control mode or a PWM control mode. Specifically, the CAN bus control mode CAN receive commands such as opening and closing, target power and the like sent by the superior controller through the CAN bus; and the PWM control mode can read the duty ratio of a PWM signal sent by a superior controller to control the output power of the PTC electric heater.
Example 2
The utility model provides a hardware for pure electric vehicles's PTC electric heater control system contains the CPU of a low-power consumption, low pressure supply circuit, direct current high voltage supply circuit, two way IGBT drive circuit, CAN bus communication interface circuit all the way, current detection circuit all the way, three routes temperature detection circuit, three routes PWM signal output circuit, input capture channel all the way, two way mode switch. The PTC electric heater control system has the main functions of receiving a warm air heating demand instruction of the air conditioning system from the upper-level controller and controlling the output of the IGBT to drive the PTC electric heater body to heat. The PTC electric heater control system is provided with two command receiving modes, namely a CAN bus control mode and a PWM control mode, and the two modes CAN be switched through a mode switch. The PTC electric heater control system high voltage circuit and the low voltage circuit are physically isolated from each other. The highest bearable high-voltage level of the hardware of the PTC electric heater control system is direct current 600V. The PTC electric heater control system has the functions of PTC electric heater body temperature detection, IGBT temperature detection and high-voltage current monitoring, IGBT output can be automatically cut off according to the state of the PTC electric heater control system, and the reliability and safety of heating by the PTC of the pure electric vehicle are effectively guaranteed.
The principle of the PTC electric heater control system for realizing the heating control of the PTC electric heater body is shown in figure 2,
the PTC electric heater receives a PTC control mode signal through a GPIO module to determine whether the system enters a PWM control mode or a CAN bus control mode; collecting values of a PTC temperature sensor, an IGBT temperature sensor and a system temperature sensor through an analog input module so as to monitor the temperature of the PTC electric heater heating core body, the temperature of the IGBT body and the temperature of the system CPU in real time; acquiring the working state of an air blower of an air conditioning system and acquiring a control enabling signal of a PTC electric heater of a superior controller through a GPIO (general purpose input/output) channel; and acquiring a target output power command of the PTC electric heater of the superior controller through the input capturing channel. And the PTC electric heater judges whether the system state is normal according to the information such as the mode, the temperature, the working state of the blower and the like set by the system, and adjusts the output power of the system to the target output power according to the PTC enabling instruction. The PTC electric heater can control the IGBT driving circuit to work through the PWM module to adjust the output power of the PTC electric heater, and the power of the PTC electric heater is output by adjusting the duty ratio of the PWM signal. When the PTC electric heater breaks down, the system fault state can be output through the GPIO module, and the PTC fault indicating lamp is lightened. In the CAN bus control mode, the PTC electric heater CAN also obtain the temperature inside the vehicle, the temperature outside the vehicle and target set temperature information sent by a superior controller through the CAN bus to perform auxiliary control, and CAN output the specific working state of the PTC through the CAN bus.
The crystal oscillator of the PTC electric heater is used for providing a system clock for the singlechip, is the basis for the singlechip to carry out any read-write operation, and also provides a reference clock for the CAN bus, the PWM module and the analog input module.
The reset circuit of the PTC electric heater is used for generating system reset when debugging and program downloading are carried out, so that the program counter of the single chip microcomputer returns to the initial position.
The PTC electric heater comprises 8 paths of GPIOs which are digital quantity input and output interfaces and can receive signals of a mode switch, PTC control enable and a blower working state, output a fault state and control a PTC fault indicator lamp.
With reference to embodiments 1 and 2, the utility model provides a PTC electric heater control system for pure electric vehicles, its working process is described as follows:
1. the PTC electric heater controls the system to be powered on at low voltage of 12V, and a system clock is initialized;
2. the PTC electric heater control system initializes a system input/output module, a CAN bus communication interface circuit module, a PWM signal output circuit module and an input capture channel circuit module;
3. the PTC electric heater control system high-voltage input end is electrified, and an IGBT driving circuit module is initialized;
4. periodically detecting the working state of an IGBT driving circuit of the PTC electric heater control system;
5. periodically detecting the working current of a PTC electric heater body of the PTC electric heater control system;
6. periodically detecting the temperature of the PTC electric heater control system and the temperature of the IGBT driving chip;
7. periodically detecting the temperature of a PTC electric heating core body of the PTC electric heater control system;
8. the PTC electric heater control system detects the opening and closing enabling control signal of the PTC electric heater at regular time;
9. the PTC electric heater control system detects the opening and closing state of a blower of a pure electric vehicle air conditioning system assembled by the PTC electric heater at regular time;
10. the working state of the PTC electric heater control system is detected in a timing mode, and the working state comprises the working state of an IGBT driving chip, whether the temperature of the PTC electric heater control system is in a normal range or not, and whether the temperature of a PTC electric heating core body of the PTC electric heater control system is in a normal range or not;
11. and detecting the PTC electric heater control mode of the PTC electric heater control system at regular time.
12. And detecting the target power information of the PTC electric heater control system in a CAN bus control mode or a PWM control mode at regular time, calculating the required current, and adjusting the output power of the PTC electric heater by adjusting the output current of the IGBT drive circuit module.
Claims (6)
1. A PTC electric heater control system for a pure electric vehicle, comprising: the device comprises a CPU module, a low-voltage power supply circuit, a high-voltage power supply circuit, two IGBT (insulated gate bipolar transistor) driving circuits, a CAN (controller area network) bus communication interface circuit, three temperature detection circuits, a high-voltage current detection circuit, three PWM (pulse-width modulation) signal output circuits, an input capture channel circuit and two mode switches; wherein,
the CPU module is used for carrying out system operation, logic analysis and system control;
the low-voltage power supply circuit is used for providing working voltages of the singlechip of the CPU module and other chips in the circuit of the system;
the high-voltage power supply circuit is used for providing direct-current high voltage for the IGBT driving circuit;
the IGBT driving circuit controls the on-off of the IGBT to control whether the PTC electric heating core body is heated or not;
the CAN bus communication interface circuit is used for realizing CAN communication between the system and a superior controller, receiving the information of the temperature inside the vehicle, the temperature outside the vehicle and the target set temperature sent by the superior controller and sending the specific working parameters of the PTC electric heater to the superior controller;
the temperature detection circuit is used for detecting the system temperature, the temperature of the IGBT driving chip and the temperature of the PTC electric heating core body;
the high-voltage current detection circuit is used for measuring the high-voltage current of the PTC electric heater during working;
the PWM signal output circuit is used for controlling whether the IGBT driving circuit works or not and is used for representing the power of the PTC electric heater during working by changing the duty ratio in a PWM control mode;
the input capturing channel circuit is used for acquiring a PWM signal sent by a superior controller in a PWM control mode;
and the mode switch is used for switching the mode of acquiring the target power information sent by the superior controller by the PTC electric heater.
2. The system as claimed in claim 1, wherein the PTC electric heater acquires the target power information transmitted from the upper controller in a manner including a CAN bus control mode and a PWM control mode.
3. The system of claim 2, wherein in the CAN bus control mode, the PTC electric heater receives a target power command transmitted from a superior controller through a CAN bus; in the PWM control mode, the PTC electric heater reads the duty ratio of a PWM signal sent by a superior controller to control the output power of the PTC electric heater.
4. The system of claim 1, wherein the high voltage supply circuit and the low voltage supply circuit of the system are isolated from each other.
5. The system of claim 1, wherein the system hardware can withstand a high voltage of 600V dc, and the high voltage power supply circuit can convert 600V dc to 13.5V dc.
6. The system of claim 1, wherein the CAN bus communication interface hardware is isolated by a photoelectric coupler to convert a single-wire signal transmitted and received by a CAN controller into a differential signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200527059U CN203084530U (en) | 2013-01-30 | 2013-01-30 | Control system for PTC electric heater used for pure electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200527059U CN203084530U (en) | 2013-01-30 | 2013-01-30 | Control system for PTC electric heater used for pure electric automobile |
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| Publication Number | Publication Date |
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| CN203084530U true CN203084530U (en) | 2013-07-24 |
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| CN2013200527059U Expired - Fee Related CN203084530U (en) | 2013-01-30 | 2013-01-30 | Control system for PTC electric heater used for pure electric automobile |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106042834A (en) * | 2016-06-24 | 2016-10-26 | 北京新能源汽车股份有限公司 | Control method and system for warm air of air conditioner of electric automobile |
| CN106144031A (en) * | 2016-08-23 | 2016-11-23 | 淄博爱而生机械智能化科技有限公司 | A kind of packing machine takes scraps of paper finger and takes scraps of paper device |
| CN108663959A (en) * | 2018-06-07 | 2018-10-16 | 南京协和电子科技有限公司 | A kind of PTC controllers showing software online updating by PWM causes for gossip |
| CN108883705A (en) * | 2015-12-04 | 2018-11-23 | 赛博斯维智解决方案公司 | Charging system for motor-driven vehicle |
| CN109693515A (en) * | 2018-12-21 | 2019-04-30 | 浙江睿星新能源有限公司 | A kind of new-energy automobile PTC liquid electric heater |
| CN112015211A (en) * | 2020-08-31 | 2020-12-01 | 芜湖云雀电子科技有限公司 | Control system and control method of high-voltage PTC heater of electric automobile |
| CN112406550A (en) * | 2020-12-01 | 2021-02-26 | 苏州富町根电子科技有限公司 | Safety protection control method for electric heater of electric automobile |
| CN112406547A (en) * | 2020-12-01 | 2021-02-26 | 苏州富町根电子科技有限公司 | Safety protection control system for electric automobile electric heater |
| US11180034B2 (en) | 2015-12-04 | 2021-11-23 | Cyberswitchingpatents, Llc | Electric vehicle charging system with priority charging |
| US12054070B2 (en) | 2015-12-04 | 2024-08-06 | Cyber Switching Solutions, Inc. | Electric vehicle charging system interface |
| US12065046B2 (en) | 2015-12-04 | 2024-08-20 | Cyberswitchingpatents, Llc | Electric vehicle charging method |
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2013
- 2013-01-30 CN CN2013200527059U patent/CN203084530U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11180034B2 (en) | 2015-12-04 | 2021-11-23 | Cyberswitchingpatents, Llc | Electric vehicle charging system with priority charging |
| US11590851B2 (en) | 2015-12-04 | 2023-02-28 | Cyberswitchingpatents, LLC. | Electric vehicle charging system |
| CN108883705A (en) * | 2015-12-04 | 2018-11-23 | 赛博斯维智解决方案公司 | Charging system for motor-driven vehicle |
| US12065046B2 (en) | 2015-12-04 | 2024-08-20 | Cyberswitchingpatents, Llc | Electric vehicle charging method |
| US12054070B2 (en) | 2015-12-04 | 2024-08-06 | Cyber Switching Solutions, Inc. | Electric vehicle charging system interface |
| CN106042834B (en) * | 2016-06-24 | 2019-07-09 | 北京新能源汽车股份有限公司 | Control method and system for warm air of air conditioner of electric automobile |
| CN106042834A (en) * | 2016-06-24 | 2016-10-26 | 北京新能源汽车股份有限公司 | Control method and system for warm air of air conditioner of electric automobile |
| CN106144031A (en) * | 2016-08-23 | 2016-11-23 | 淄博爱而生机械智能化科技有限公司 | A kind of packing machine takes scraps of paper finger and takes scraps of paper device |
| CN108663959A (en) * | 2018-06-07 | 2018-10-16 | 南京协和电子科技有限公司 | A kind of PTC controllers showing software online updating by PWM causes for gossip |
| CN109693515A (en) * | 2018-12-21 | 2019-04-30 | 浙江睿星新能源有限公司 | A kind of new-energy automobile PTC liquid electric heater |
| CN112015211A (en) * | 2020-08-31 | 2020-12-01 | 芜湖云雀电子科技有限公司 | Control system and control method of high-voltage PTC heater of electric automobile |
| CN112406547A (en) * | 2020-12-01 | 2021-02-26 | 苏州富町根电子科技有限公司 | Safety protection control system for electric automobile electric heater |
| CN112406550B (en) * | 2020-12-01 | 2022-04-08 | 苏州富町根电子科技有限公司 | Safety protection control method for electric heater of electric automobile |
| CN112406547B (en) * | 2020-12-01 | 2022-04-08 | 苏州富町根电子科技有限公司 | Safety protection control system for electric automobile electric heater |
| CN112406550A (en) * | 2020-12-01 | 2021-02-26 | 苏州富町根电子科技有限公司 | Safety protection control method for electric heater of electric automobile |
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Address after: 102606 Beijing City Economic Development Zone, Daxing District Caiyu mining and Road No. 1 Patentee after: BAIC BJEV Address before: 102606 Beijing City Economic Development Zone, Daxing District Caiyu mining and Road No. 1 Patentee before: Beijing Automobile New Energy Automobile Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20210130 |
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| CF01 | Termination of patent right due to non-payment of annual fee |