阅读说明：本技术 电动汽车热管理超级域控制系统 (Electric automobile heat management super domain control system ) 是由 龙鹏渊 于 2020-06-22 设计创作，主要内容包括：本发明公开了电动汽车热管理超级域控制系统,系统取消传统电动压缩机、水暖/风暖电加热、冷却液泵、电子风扇、鼓风机等分总成的控制电路,将这些总成的控制部分统一集成到超级域控制器STMU中,可降低各分总成电路布局的复杂度,节省体积空间,减少通讯节点,提高控制效率和可靠性,实现接口的标准化、通用化；同时,该系统可整合产业链上下游企业各自的专业技术优势,降低了重复的技术投入和资源投入,以快速实现零部件设计和整车匹配设计,缩短研发生产周期,提高生产效益,节省了全链条产品的开发费用,其性价比发挥到极致,为社会产生极大的经济价值。(The invention discloses a super domain control system for electric automobile heat management, which cancels control circuits of traditional electric compressors, water heating/air heating electric heating, coolant pumps, electronic fans, blowers and other subassemblies, and integrates control parts of the subassemblies into a super domain controller STMU in a unified way, thereby reducing the complexity of circuit layout of each subassembly, saving volume and space, reducing communication nodes, improving control efficiency and reliability, and realizing standardization and universalization of interfaces; meanwhile, the system can integrate the professional technical advantages of enterprises on the upstream and downstream of the industrial chain, reduce repeated technical investment and resource investment, quickly realize part design and whole vehicle matching design, shorten the research and development production period, improve the production benefit, save the development cost of full-chain products, bring the cost performance into full play, and generate great economic value for the society.)

1. The electric automobile heat management super domain control system is characterized by comprising a heat management super domain controller STMU, wherein one, a plurality of or all of all heat unit assembly controllers on an electric automobile are integrated into the heat management super domain controller, are uniformly controlled by the heat management super domain controller, and drive related heat unit assemblies through a sensor, an actuator, a control valve and a drive circuit so as to realize corresponding required functions;

the thermal unit assembly, which has integrated the controller into the thermal management super domain controller, retains a mechanical structure part, a functional structure part, a motor part;

the electric automobile thermal management super domain control system is also provided with a control circuit for driving the thermal unit assembly and an interface socket for connecting the thermal unit assembly.

2. The domain control system according to claim 1, wherein: the blower assembly motor, the electronic fan assembly motor and the cooling liquid pump motor can be selected to be a high-voltage three-phase brushless motor or a high-voltage three-phase brush motor or a low-voltage brushless motor at will, wherein the high-voltage three-phase brushless motor and the low-voltage brushless motor are subjected to position detection-free and sine wave vector control.

3. The domain control system according to claim 1, wherein: the system is provided with a high-voltage power supply loop to supply power to the thermal management super-domain controller.

4. The domain control system according to claim 1, wherein: the control power supply of the thermal management super domain control system is formed by DC-DC isolation conversion of the high-voltage battery of the electric automobile.

5. The domain control system according to claim 1, wherein: and an aluminum radiator with a cooling liquid flow channel is arranged in the heat management super-domain controller and used for recovering the waste heat of the power device.

6. The domain control system according to claim 1, wherein: the thermal management super-domain controller uses a single MCU to accomplish all control functions.

7. The domain control system according to claim 1, wherein: the thermal unit assembly includes: the system comprises an electric compressor EDC assembly, an air heating electric heating assembly, a water heating electric heating assembly, an air blower assembly, an electronic fan assembly and a cooling liquid pump assembly.

8. The domain control system according to claim 1, wherein: the thermal unit assembly controller includes: the control system comprises an internal or external controller of an EDC assembly of the electric compressor, an internal or external controller of an air heating electric heating assembly, an internal or external controller of a water heating electric heating assembly, an internal or external speed regulation controller of a blower assembly, an internal or external speed regulation controller of an electronic fan assembly and an internal or external controller of a cooling liquid pump assembly.

9. The domain control system according to claim 1, wherein: the system is powered by a high-voltage battery and a low-voltage battery of the electric automobile together.

10. The domain control system according to claim 1, 2 or 9, wherein: when a low-voltage motor is adopted in the blower assembly motor, the electronic fan assembly motor and the cooling liquid pump motor, the low-voltage motor, the actuator, the sensor and the control valve are powered by the low-voltage storage battery to form a low-voltage area of the super-domain control system; when the blower assembly motor, the electronic fan assembly motor and the cooling liquid pump motor are all high-voltage motors, the actuator, the sensor and the control valve are powered by the low-voltage storage battery to form a low-voltage area of the super-domain control system;

the low-voltage area is provided with a first microprocessor to realize the control function of the low-voltage area;

the high-voltage motor in the blower assembly motor or the electronic fan assembly motor or the cooling liquid pump motor is powered by the high-voltage battery of the electric automobile to form a high-voltage area of a super-domain control system, and the high-voltage area is provided with a second microprocessor to realize the control function of the high-voltage area;

the power supply loops between the high-voltage area and the low-voltage area are isolated from each other;

and the interactive information between the first microprocessor and the second microprocessor adopts an isolated receiving and transmitting mode.

Technical Field

The invention belongs to the technical field of electric automobiles, and particularly relates to a super domain control system for electric automobile heat management.

Background

The heat management of the traditional fuel vehicle is concentrated on the engine, the engine cooling system is almost not related to the air-conditioning refrigeration system, the common air-conditioning system only borrows the waste heat of the engine to heat the passenger compartment, the two sets of relatively independent systems have extremely high technical maturity, and no space is increased in the aspect of control technology. However, electric vehicles have added battery systems, replacing the internal combustion engine and transmission assembly with an electric machine and transmission assembly, both of which have resulted in significant changes in the overall vehicle thermal management architecture. Such as: the electric automobile has no excessive waste heat of the engine; the battery has weak discharging capacity in low-temperature environment, needs to be preheated and heated by an air conditioner besides supplying power to the motor, has large electric energy consumption and seriously influences endurance. Meanwhile, the refrigerant loop is associated with an air conditioning system and a battery cooling system, and the electric control waste heat of the motor is associated with battery heating and air conditioning heating, so that the thermal management system of the electric automobile is subversively changed, and the waste heat of the electric automobile is not volatilized, but the heat is lost. However, many vehicle enterprises still continue to follow the technical architecture and project management thinking of the traditional fuel vehicle, the air conditioner and the cooling are separated, and the thermal systems of the air conditioner, the battery, the motor electric control and the like are not integrated to be upgraded to the whole vehicle thermal management.

Throughout the endurance anxiety of the electric automobile industry, most automobile enterprises only increase the battery capacity one by one, but ignore the high-efficiency thermal management technology of the whole automobile, particularly do not recognize and understand the importance of the thermal management control technology in the development of the whole thermal system, and do not have an enterprise all over the world so far, including an industry standard bar-Tesla, and also do not have a highly integrated thermal management control system.

As an electric automobile, the thermal management control system mainly comprises: the system comprises an electric compressor assembly (EDC), an air heating and electric heating assembly, a water heating and electric heating assembly, a coolant PUMP assembly (commonly called a water PUMP, PUMP), an electronic fan assembly (also called a cooling fan), a blower assembly and other electric devices in the HVAC assembly, and various electronic/electromagnetic valves, actuators, sensors and the like. However, it is not easy to integrate the control parts of these independent module assemblies to form super domain control, and it is necessary to master the control algorithm of the automatic air conditioner of the conventional fuel vehicle, and also to master the basic functions and control algorithms of other assemblies, which covers multiple disciplines and multiple professional fields, and the technical difficulty is very high. Therefore, in the development of electric vehicles, each subassembly in the thermal management system still selects a relatively simple and easily implemented decentralized development.

The current situation of the integration level of a thermal management system in the industry at present: the heat management controller (also called heat management control module) replacing the traditional fuel vehicle air conditioner controller is adopted to control electric devices on an HVAC assembly and electromagnetic valves in pipelines in a centralized manner, then a plurality of sub-assemblies such as an electric compressor, air heating/water heating electric heating, an electronic fan, a cooling liquid pump, an electronic expansion valve and the like are controlled through bus communication signals, and the whole heat management system generates a plurality of distributed controllers or control modules.

Due to the adoption of the distributed control module, a large amount of similarities and repetitions are arranged on the circuit of each main thermal system element, so that resource waste is caused. For example: the electric compressor assembly and the air heating and water heating (also called liquid heating) electric heating assembly are all high/low voltage combined devices, wherein the same part comprises: the high-voltage circuit comprises a high-voltage circuit fuse, a high-voltage relay, a high-voltage filtering EMI suppression circuit, an IGBT/Mosfet grid driving and boosting power supply circuit, a voltage/current detection circuit, a CPU peripheral circuit, a bus transceiving circuit, a 12V interface and LDO power supply circuit, a PCB, a cooling liquid circuit and interface, an aluminum radiator and the like; the electronic fan, the cooling liquid PUMP (PUMP1& PUMP2), the blower assembly and other electric devices (such as sensors, actuators, control valves and the like) are all low-voltage devices, wherein the same parts comprise: the low-voltage power supply circuit comprises a low-voltage relay, a low-voltage filtering EMI suppression circuit, an IGBT/Mosfet driving circuit, a voltage/current detection circuit, a CPU peripheral circuit, a bus transceiving circuit, a 12V interface, an LDO power supply circuit, a PCB and the like.

Electric vehicles "lose heat such as gold" and do not have sufficient waste heat for air conditioning and battery heating. Such a distributed management of the power devices of the respective controllers is disadvantageous for waste heat recovery. At present, heat of driving parts such as an electric compressor, a coolant pump, an electronic fan, and a blower is wastefully wasted in the atmosphere.

Each sub-assembly is provided with a control circuit, a high/low voltage loop is complex, wire harnesses, plug-ins and communication nodes are increased, network load is increased, after-sale problems are difficult to analyze and judge, different ECUs come from different suppliers and have different embedded software and bottom layer codes, and meanwhile, unit circuits of hardware parts and DV & PV tests of products are overlapped. The distributed control mode causes considerable redundancy, so that components and codes of the whole thermal management control system are multiplied, the reliability is reduced, and meanwhile, various tasks of development, verification, production and the like of a supplier in the technical field of electronics are overlapped, so that the cost of the whole vehicle is increased and resources are wasted.

The distributed control mode increases the electronic/electric appliance and structural materials, increases the space volume and increases the weight. On the premise of the same volume, after each sub-assembly is provided with a controller, the displacement, the flow and the power of the sub-assembly are necessarily reduced, and the system performance is influenced. Meanwhile, the difficulty brought to the arrangement and weight reduction of the whole vehicle of the vehicle-enterprise is brought.

The system is evolved from the traditional distributed architecture into a centralized domain architecture, and is upgraded from a controller with a single function into integrated domain control of a large system, so that the energy utilization efficiency of the electric automobile can be improved, the endurance mileage is prolonged, and the development time and cost are saved.

For high-voltage devices in a thermal management control system, such as: the electric compressor, the air heating and water heating electric heating assembly and the like should restore the inherent characteristics of the electric compressor, the compressor should be the combination of a mechanical structure and a motor, and the traditional automobile air conditioner compressor manufacturer is enabled to concentrate on the researches of mechanical rotation, noise and the like; the electric heating assembly of air heating and water heating is mainly focused on the electric heating core body, such as PTC (positive temperature coefficient), heating film/wire and the like, but is not suitable for integrating and developing high-voltage driving, control circuits and software parts, and the integration mode enables the controller to work in extremely severe environment, reduces the reliability, occupies the volume and space, and is difficult to realize larger displacement and power under the same volume. For low voltage devices, such as: electronic fans, coolant pumps, blowers, etc., should focus on mechanical structures in combination with the motor, not being suitable for integrating the associated control circuitry and software, etc. This distributed control also does not facilitate waste heat recovery of the various control components.

Disclosure of Invention

In view of the above, the present invention provides a centralized thermal management super domain control system for an electric vehicle.

The purpose of the invention is realized by the following technical scheme:

the electric automobile heat management super domain control system comprises a heat management super domain controller, wherein one, a plurality of or all of all heat unit assembly controllers on an electric automobile are integrated into the heat management super domain controller, are uniformly controlled by the heat management super domain controller, and drive related heat unit assemblies through a sensor, an actuator, a control valve and a drive circuit so as to realize the required corresponding functions;

the thermal unit assembly, which has integrated the controller into the thermal management super domain controller, retains a mechanical structure part, a functional structure part, a motor part;

the electric automobile thermal management super domain control system is also provided with a control circuit for driving the thermal unit assembly and an interface socket for connecting the thermal unit assembly.

Further, the blower assembly motor, the electronic fan assembly motor and the cooling liquid pump motor can be selected to be a high-voltage three-phase brushless motor or a high-voltage three-phase brush motor or a low-voltage brushless motor at will, wherein the high-voltage three-phase brushless motor and the low-voltage brushless motor adopt position detection and sine wave vector control.

Further, the system is provided with a high-voltage power supply loop to supply power to the thermal management super domain controller.

Further, the control power supply of the thermal management super domain control system is formed by DC-DC isolation conversion of the high-voltage battery of the electric automobile.

Further, an aluminum radiator with a cooling liquid flow channel is arranged in the heat management super-domain controller and used for recovering waste heat of the power device.

Further, the thermal management super domain controller uses a single MCU to accomplish all control functions.

Further, the thermal unit assembly includes: the system comprises an electric compressor EDC assembly, an air heating electric heating assembly, a water heating electric heating assembly, an air blower assembly, an electronic fan assembly and a cooling liquid pump assembly.

Further, the thermal unit assembly controller includes: the control system comprises an internal or external controller of an EDC assembly of the electric compressor, an internal or external controller of an air heating electric heating assembly, an internal or external controller of a water heating electric heating assembly, an internal or external speed regulation controller of a blower assembly, an internal or external speed regulation controller of an electronic fan assembly and an internal or external controller of a cooling liquid pump assembly.

Further, the system is jointly powered by a high-voltage battery and a low-voltage battery of the electric automobile.

Further, when a low-voltage motor is adopted in the blower assembly motor, the electronic fan assembly motor and the cooling liquid pump motor, the low-voltage motor, the actuator, the sensor and the control valve are powered by the low-voltage storage battery to form a low-voltage area of the super-domain control system; when the blower assembly motor, the electronic fan assembly motor and the cooling liquid pump motor are all high-voltage motors, the actuator, the sensor and the control valve are powered by the low-voltage storage battery to form a low-voltage area of the super-domain control system;

the low-voltage area is provided with a first microprocessor to realize the control function of the low-voltage area;

the high-voltage motor in the blower assembly motor or the electronic fan assembly motor or the cooling liquid pump motor is powered by the high-voltage battery of the electric automobile to form a high-voltage area of a super-domain control system, and a second microprocessor is arranged in the high-voltage area to realize the control function of the high-voltage area;

the power supply loops between the high-voltage area and the low-voltage area are isolated from each other;

and the interactive information between the first microprocessor and the second microprocessor adopts an isolated receiving and transmitting mode.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

the invention relates to a principle framework which is considered from the perspective of the whole chain of a thermal management control system product of an electric automobile, completely gets rid of the limitation of the traditional fuel automobile, can effectively guide the industry to enter a benign development track, and enables the cost performance of the product to be brought into full play.

1. The electric automobile industry is led to set effective measures and policies in the aspect of a finished automobile heat management control system, so that assemblies such as an electric compressor, an air blower, an electronic fan, a cooling liquid pump, water heating electric heating, air heating electric heating and the like are changed into products without control circuits and software, standard electric interfaces can be set according to indexes such as discharge capacity, flow, power and the like, and the generalization and standardized development of the products can be realized more easily and scientifically;

2. the system can help each part enterprise and the whole vehicle enterprise to define respective development paths, give full play to respective advantages, implement technical classification, reduce repeated technical investment and resource investment, quickly realize part product design and whole vehicle matching design, shorten research and development production period and improve production benefits;

3. according to the invention, the waste heat of each sub-assembly is effectively recovered in the waste heat recovery period, the voltage level is improved, the line loss can be reduced, and the energy utilization efficiency of the whole vehicle is improved; meanwhile, the control parts of all the subassemblies are highly integrated, so that the similarity of products in the aspects of hardware, software and tests is reduced, the resource utilization rate of each unit circuit is improved, the development cost of a full-chain product is saved, the cost performance is brought into play to the utmost extent, and great economic value is generated for the society.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

Detailed Description

The invention is further illustrated by the following figures and examples.