CN218640647U - Automatic drive vehicle thermal management system and automatic drive vehicle - Google Patents

Abstract

The utility model provides an automatic drive vehicle thermal management system and automatic drive vehicle relates to artificial intelligence technical field, especially relates to fields such as autopilot, thermal management. The specific implementation scheme is as follows: the autonomous vehicle includes a computing unit; the thermal management system comprises: a compressor refrigerant circuit, a first antifreeze circuit, a first cooler and a first water pump; a first inner anti-freezing liquid pipeline is arranged in the calculation unit and is connected in series in the first anti-freezing liquid loop; the first cooler includes: a second internal antifreeze line and a first internal refrigerant line; the second inner anti-freezing solution pipeline is connected in series in the first anti-freezing solution loop; a first internal refrigerant line connected in series in the compressor refrigerant circuit; and the first water pump is connected in series in the first antifreeze liquid loop and is used for pumping the antifreeze liquid in the first cooler to the first internal antifreeze liquid pipeline in the computing unit. The present disclosure enables individual temperature control of the computing unit.

Description

Automatic drive vehicle thermal management system and automatic drive vehicle

Technical Field

The present disclosure relates to the field of artificial intelligence technology, and more particularly to the fields of autonomous driving, thermal management, and the like.

Background

The automotive industry is developing trend of the automatic driving vehicle, and in order to ensure normal operation of each component of the automatic driving vehicle and improve comfort of passengers, vehicle thermal management is required to control temperature of the vehicle.

SUMMERY OF THE UTILITY MODEL

The disclosure provides an automatic driving vehicle thermal management system and an automatic driving vehicle.

According to an aspect of the present disclosure, there is provided an autonomous vehicle thermal management system, the autonomous vehicle comprising a computing unit; the thermal management system comprises: a compressor refrigerant circuit, a first antifreeze circuit, a first cooler and a first water pump;

a first internal anti-freezing liquid pipeline is arranged in the computing unit and is connected in series in the first anti-freezing liquid loop;

the first cooler includes: a second internal antifreeze line and a first internal refrigerant line; the second internal antifreeze line is connected in series in the first antifreeze circuit; the first inner refrigerant line is connected in series in the compressor refrigerant circuit;

the first water pump is connected in series in the first antifreeze circuit and used for pumping the antifreeze in the first cooler to the first internal antifreeze pipeline in the computing unit.

According to another aspect of the present disclosure, there is provided an autonomous vehicle including: a thermal management system as claimed in any one of the above first aspects.

The present disclosure enables individual temperature control of the computing unit.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present disclosure, nor do they limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The drawings are included to provide a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:

FIG. 1 is a schematic structural diagram of an autonomous vehicle thermal management system according to a first embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of an autonomous vehicle thermal management system according to a second embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of an autonomous vehicle thermal management system according to a third embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of an autonomous vehicle thermal management system according to a fourth embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of an autonomous vehicle thermal management system according to a fifth embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of an autonomous vehicle thermal management system according to a sixth embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of an autonomous vehicle thermal management system according to a seventh embodiment of the present disclosure.

Detailed Description

Exemplary embodiments of the present disclosure are described below with reference to the accompanying drawings, in which various details of the embodiments of the disclosure are included to assist understanding, and which are to be considered as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.

In order to ensure the normal operation of each part of the automatic driving vehicle and improve the comfort of passengers, vehicle thermal management is needed to realize the control of the temperature of the vehicle.

At present, in order to meet the requirement of normal work of the whole vehicle, a vehicle thermal management system is adopted to control the temperature of the vehicle. The computing unit used as the brain of the automatic driving automobile has large power consumption, and needs to dissipate/heat up in order to meet the requirements of high and low temperature operation of the whole automobile.

In the related art, there are several main cases for controlling the temperature of the computing unit:

1) An air cooling scheme: directly arranging the automatic driving calculation unit in a passenger compartment, and cooling the calculation unit by using cold air in the passenger compartment;

the drawbacks of this solution are: the scheme that the computing unit is directly arranged in the passenger compartment has large noise and influences the driving experience. And the air conditioner needs to be started, and the passenger compartment is started after the temperature of the passenger compartment is reduced and reaches the starting temperature of the calculation unit, so that the overall performance of the air conditioning system and the starting time of the automatic driving system are influenced.

2) An air cooling scheme: arranging the computing unit in an overhaul bin, sucking cold air from a passenger compartment/air conditioning pipeline, and cooling the computing unit;

the drawbacks of this solution are: the calculation unit is arranged in the overhaul bin, cold air is sucked from the passenger compartment/air conditioning pipeline, an air conditioning system must be started before the calculation unit is started, enough air exchange rate in the overhaul bin must be ensured, and otherwise, the calculation unit still has an overtemperature risk. And simultaneously, the overall performance of the original vehicle air conditioning system is reduced. If only air is sucked from the passenger cabin, noise can be transmitted into the passenger cabin along the ventilation pipeline, and the driving experience is influenced.

3) Liquid cooling scheme: the small water cooler is used for placing the water cooler on the vehicle, the air in the passenger compartment is used for dissipating heat of liquid in the water cooler, the PTC is used for heating the liquid, and cooling and heating of cooling liquid in the computing unit are completed so as to meet the thermal management requirement of the computing unit;

the drawbacks of this solution are: the heat dissipation adopts the same water cooler heat dissipation fan, and the liquid in the water cooler is cooled by utilizing the air in the passenger cabin, so that the temperature of the computing unit is reduced. The limit is limited by the limitations of the vehicle-mounted water cooler and the original vehicle air conditioning system, and the computing unit has overtemperature risk when continuously operating at high power.

4) Liquid cooling scheme: and connecting the computing unit in series/parallel to a heat dissipation pipeline of the battery pack, and heating/cooling the computing unit by using the battery thermal management system.

The drawbacks of this solution are: the series/parallel connection of the battery pack heat dissipation pipelines has a large influence on the heat management requirements of the battery, and is inconvenient for the energy consumption and control of the whole vehicle.

In summary, none of the related art solutions for controlling the temperature of the computing unit can achieve independent temperature control of the computing unit.

To enable individual temperature control of a computing unit, embodiments of the present disclosure provide an autonomous vehicle thermal management system, as shown in fig. 1, comprising:

the autonomous vehicle includes a computing unit 100; the thermal management system comprises: a compressor refrigerant circuit 101, a first antifreeze circuit 102, a first cooler 103, and a first water pump 104;

a first internal antifreeze circuit 1001 is arranged in the calculation unit 100, and the first internal antifreeze circuit 1001 is connected in series in the first antifreeze circuit 102;

the first cooler 103 includes: a second internal antifreeze line 1031 and a first internal refrigerant line 1032; second internal antifreeze circuit 1031 is connected in series in first antifreeze circuit 102; first inner refrigerant line 1032 is connected in series in compressor refrigerant circuit 101;

a first water pump 104, connected in series in the first antifreeze circuit 102, is used for pumping antifreeze liquid from the first cooler 103 to the first internal antifreeze line 1001 in the calculation unit 100.

The embodiment of the disclosure thermally manages the computing unit in the automatic driving vehicle, meets the thermal management requirement of the computing unit, realizes independent temperature control of the computing unit, further avoids the influence of other systems on the thermal management of the computing unit, and realizes accurate control of the temperature of the computing unit.

In addition, the method is independent from the thermal management control in other directions, and the control is more flexible and accurate. Further, it is possible to prevent a system bug or security risk due to a thermal management conflict.

Referring to FIG. 1, an embodiment of the present disclosure provides a thermal management system wherein the second internal antifreeze circuit 1031 of the first cooler 103 is connected in series in the first antifreeze circuit 102; a first inner refrigerant line 1032 of the first cooler 103 is connected in series in the compressor refrigerant circuit 101.

Among them, the cooler may also be called a chiller.

The refrigerant in the compressor refrigerant circuit 101 is led to the first cooler 103 through the first inner refrigerant line 1032 of the first cooler 103, and the refrigerant evaporates in the first cooler 103 and absorbs ambient heat, thereby cooling the antifreeze in the second inner antifreeze line 1031 of the first cooler 103, which second inner antifreeze line 1031 is connected in series to the first antifreeze circuit 102, thereby cooling the antifreeze in the first antifreeze circuit 102. The first water pump 104 is connected in series to the first antifreeze circuit 102, so that the antifreeze in the first cooler 103 is pumped to the first internal antifreeze pipeline 1001 in the calculation unit 100, that is, the antifreeze with low temperature is pumped into the first internal antifreeze pipeline 1001 in the calculation unit 100, and thus the calculation unit 100 can be cooled, and the temperature reduction control of the calculation unit 100 is realized.

When there is no heat management requirement, the first water pump 104 is normally operated, so that the first antifreeze solution circuit 102 is operated to ensure the basic heat dissipation requirement of the calculation unit 100.

The computing unit 100 runs software and the like in the prior art to realize the function as the brain of the autonomous driving vehicle.

The original vehicle compressor loop is used for independently refrigerating the computing unit, the influence of air conditioners, battery side heat management strategies and the like is avoided, and the heat management of the automatic driving computing unit is independently realized.

Compared with a mode of cooling the computing unit by utilizing cold air in the passenger cabin, the embodiment of the disclosure independently conducts heat management on the computing unit, can conduct heat management on the computing unit without starting an air conditioner, and can be started after the temperature of the passenger cabin is reduced to reach the starting temperature of the computing unit, so that the influence on the overall performance of an air conditioning system and the starting time of an automatic driving system is avoided, and the influence of noise of the air conditioning system on driving experience is also reduced.

Compared with the mode that the computing unit is arranged in the overhaul bin and cold air is sucked from the passenger compartment/air conditioner pipeline to cool the computing unit, the embodiment of the disclosure independently conducts heat management on the computing unit without enough air exchange amount in the overhaul bin, avoids the over-temperature risk caused by insufficient air exchange amount to the computing unit, and also avoids the influence on the overall performance of the original vehicle air conditioning system. And the influence of the noise of the air conditioning system on the driving experience is avoided, and the noise is only induced draft from the passenger cabin, so that the noise can be transmitted into the passenger cabin along the ventilation pipeline, and the influence on the driving experience is reduced.

Compared with the small water-cooled machine, put the water-cooled machine on the car, utilize passenger cabin in the air to dispel the heat to liquid in the water-cooled machine, utilize PTC (water heating heater) to heat for liquid, accomplish the mode of cooling and heating to the cooling liquid in the calculating unit, what the heat dissipation adopted is the water-cooled machine radiator fan equally, utilize passenger cabin in the air to liquid cooling in the water-cooled machine, accomplish the cooling to the calculating unit, be subject to on-vehicle water-cooled machine and former car air conditioning system limitation, the calculating unit lasts overtemperature risk when high-power operation, this disclosed embodiment independently manages the heat to the calculating unit, the influence to calculating unit heat management such as former car air conditioning system has been avoided, the heat management risk has been reduced.

Compared with a mode that the computing unit is connected in series/parallel to the battery pack heat dissipation pipeline and the battery heat management system is used for heating/cooling the computing unit, the embodiment of the disclosure independently conducts heat management on the computing unit, is not influenced by battery heat management requirements and other management requirements, and avoids inconvenience in energy consumption and control of the whole vehicle.

In an alternative embodiment, as shown in fig. 2, the compressor refrigerant circuit 101 comprises: a refrigerant outlet pipe 1011 and a refrigerant return pipe 1012;

the first anti-icing liquid circuit 102 comprises: a first antifreeze liquid inlet pipeline 1021 and a first antifreeze liquid return pipeline 1022;

an inlet of a first internal anti-freezing solution pipeline 1001 in the computing unit 100 is communicated with a first anti-freezing solution liquid inlet pipeline 1021, and an outlet is communicated with a first anti-freezing solution return pipeline 1022;

an inlet of the second internal antifreeze liquid pipeline 1031 in the first cooler 103 is communicated with the first antifreeze liquid return pipeline 1022, and an outlet is communicated with the first antifreeze liquid inlet pipeline 1021;

the inlet of first inner refrigerant pipe 1032 in first cooler 103 communicates with refrigerant liquid outlet pipe 1011, and the outlet communicates with refrigerant liquid return pipe 1012; for cooling the anti-icing liquid in the second internal anti-icing liquid line 1031 by means of the refrigerant when the first cooler 103 is turned on;

and a first water pump 104 disposed on the first antifreeze solution inlet pipe 1021.

The first anti-icing liquid circuit 102 comprises: the inlet of a first antifreeze solution inlet pipe 1021 and the outlet of the first antifreeze solution return pipe 1022 in the calculation unit 100 are communicated with the first antifreeze solution inlet pipe 1021, so that the first antifreeze solution circuit 102 is communicated with the calculation unit 100, and the first water pump 104 is arranged on the first antifreeze solution inlet pipe 1021, so that the antifreeze solution in the first cooler 103 is pumped to the first antifreeze solution pipe 1001 in the calculation unit 100 by the first water pump 104, and the antifreeze solution flows in the first antifreeze solution circuit 102.

The compressor refrigerant circuit 101 includes: a refrigerant outlet pipe 1011 and a refrigerant return pipe 1012; the inlet of the first internal refrigerant pipe 1032 of the first cooler 103 is communicated with the refrigerant liquid outlet pipe 1011, and the outlet is communicated with the refrigerant liquid return pipe 1012, so that the communication between the compressor refrigerant circuit 101 and the first cooler 103 is realized, the refrigerant liquid outlet pipe 1011 introduces the refrigerant in the compressor refrigerant circuit 101 into the first cooler 103, and the refrigerant returns the first cooler 103 to the compressor refrigerant circuit 101 through the refrigerant liquid return pipe 1012, so that the circulation of the refrigerant in the compressor refrigerant circuit 101 and the first cooler 103 is realized.

The second internal antifreeze circuit 1031 of the first cooler 103 is connected in series in the first antifreeze circuit 102; the first internal refrigerant line 1032 of the first cooler 103 is connected in series in the compressor refrigerant circuit 101, so that the refrigerant outlet line 1011 leads the refrigerant in the compressor refrigerant circuit 101 into the first cooler 103, and the refrigerant evaporates in the first cooler 103 and absorbs ambient heat, thereby cooling the antifreeze in the second internal antifreeze line 1031 of the first cooler 103, which is connected in series in the first antifreeze circuit 102, thereby cooling the antifreeze in the first antifreeze circuit 102. The first water pump 104 is connected in series in the first antifreeze circuit 102, so that the antifreeze in the first cooler 103 is pumped to the first internal antifreeze pipeline 1001 in the calculation unit 100, that is, the antifreeze with low temperature is pumped into the first internal antifreeze pipeline 1001 in the calculation unit 100, and thus the calculation unit 100 can be cooled, and the temperature reduction control of the calculation unit 100 is realized.

The embodiment of the present disclosure independently realizes the temperature reduction control of the automatic driving calculation unit, and can realize the circulation of the refrigerant with the first cooler 103 in the compressor refrigerant circuit 101 and the circulation of the antifreeze in the first antifreeze circuit 102, and realize the circulation control of the calculation unit 100.

In an alternative embodiment, as shown in fig. 3, the thermal management system further comprises: a first water heater 105;

the first water heater 105 is provided on the first antifreeze return line 1022 between the calculation unit 100 and the first cooler 103, and heats the antifreeze in the first antifreeze return line 1022 when turned on.

Wherein the water heating heater may also be called as PTC.

The first water heating heater 105 is connected in series to the first antifreeze liquid return pipeline 1022, and when heating is required, the first water heating heater (PTC) 105 is activated, the first water heating heater 105 heats the antifreeze liquid in the first antifreeze liquid return pipeline 1022, an inlet of the second internal antifreeze liquid pipeline 1031 in the first cooler 103 is communicated with the first antifreeze liquid return pipeline 1022, an outlet of the second internal antifreeze liquid pipeline 1031 in the first cooler 103 is communicated with the first antifreeze liquid inlet pipeline 1021, and the first water pump 104 is arranged on the first antifreeze liquid inlet pipeline 1021, so that the heated antifreeze liquid flows through the first antifreeze liquid return pipeline 1022, flows through the second internal antifreeze liquid pipeline 1031 and the first antifreeze liquid inlet pipeline 1021 in the first cooler 103, and is pumped to the first internal antifreeze liquid pipeline 1001 in the calculation unit 100 by the first water pump 104 to heat the calculation unit 100.

The computing unit 100 is connected with a first water heating heater 105, the first water heating heater 105 is connected with a first cooler 103, and an inlet of a first water pump 104 is connected with the first cooler 103; the first water pump 104 outlet is connected to the computing unit 100, and as such may be understood to form a computing hardware thermal management module.

In the embodiment of the present disclosure, the first water heating heater 105 connected in series in the first antifreeze liquid return pipeline 1022 is used to heat the computing unit 100, so that the thermal management of the computing unit is completed. In addition, in the embodiment of the present disclosure, the computing unit 100 is independently heated by the first water heater 105, so that the influence of other management branches is avoided in the process of heating the computing unit 100, and further, the computing unit can be more flexibly subjected to thermal management control, and system bug or security risk caused by thermal management conflict can also be prevented.

In an alternative embodiment, as shown in fig. 4, a first temperature sensor 106 is further disposed in the first antifreeze liquid inlet pipe 1021, and the first temperature sensor 106 is disposed between the first water pump 104 and the calculation unit 100, and is used for measuring the temperature of the antifreeze liquid entering the first internal antifreeze liquid pipe 1001 of the calculation unit 100; the first cooler 103 and the first warming-in-water heater 105 are turned on or off by this temperature control.

Specifically, the thermal management system may further include: and the first temperature control switch is connected with the first temperature sensor 106, the first cooler 103 and the first heater 105 respectively, so that the first cooler 103 and the first heater 105 are controlled to be turned on and off under temperature control.

The first temperature sensor 106 may measure the temperature of the antifreeze entering the first internal antifreeze pipeline 1001 of the computing unit 100, and start the thermal management strategy by comparing the temperature with a preset allowable temperature of the computing unit 100, that is, may perform temperature adjustment through the thermal management system, where the preset allowable temperature of the computing unit 100 may be determined according to an actual demand, for example, may be a temperature value in a range of 30 degrees celsius to 50 degrees celsius. The cooling is performed in the case where the temperature is greater than the preset allowable temperature of the calculation unit 100, and the heating is performed in the case where the temperature is less than the preset allowable temperature of the calculation unit 100. When the temperature is higher than the preset allowable temperature of the calculation unit 100, the first cooler 103 is turned on by the first temperature control switch, and the antifreeze in the second internal antifreeze line 1031 is cooled by the refrigerant when the first cooler 103 is turned on; when the temperature is lower than the preset allowable temperature of the calculation unit 100, the first heater 105 is turned on, and when the first heater 105 is turned on, the antifreeze in the first antifreeze return line 1022 is heated. Specifically, when the first cooler 103 is turned on, the antifreeze in the second internal antifreeze line 1031 is cooled by the refrigerant to implement the process of cooling the computing unit 100, and when the first heater 105 is turned on, the antifreeze in the first antifreeze return line 1022 is heated to implement the process of heating the computing unit 100, which has been described in detail in the foregoing embodiments, and is not described again here.

By measuring the temperature of the antifreeze entering the first internal antifreeze line 1001 of the calculation unit 100 in the embodiment of the present disclosure, the first cooler 103 and the first water heater 105 can be controlled to be turned on or off according to the actual temperature of the antifreeze to achieve precise temperature control of the calculation unit.

In an optional embodiment, as shown in fig. 5, the thermal management system further includes: a first electronic expansion valve 107; the compressor refrigerant circuit further includes: compressor 1013 and condenser 1014;

the condenser 1014 and the first electronic expansion valve 107 are arranged in series on the refrigerant liquid outlet pipe 1011;

condenser 1014 is disposed adjacent to compressor 1013;

first electronic expansion valve 107 is disposed close to first cooler 103, and is used for communicating refrigerant liquid outlet pipe 1011 with first inner refrigerant pipe 1032 of first cooler 103, and delivering the refrigerant output from condenser 1014 to first inner refrigerant pipe 1032 of first cooler 103.

The compressor 1013 generates gaseous refrigerant, the gaseous refrigerant is liquefied by the condenser 1014 and the condenser 1014, when the computing unit 100 needs to be cooled, the first electronic expansion valve 107 is controlled to be opened by the first temperature control switch when the temperature of the anti-freezing liquid in the first internal anti-freezing liquid pipeline 1001 of the computing unit 100 measured by the first temperature sensor 106 is higher than the preset allowable temperature of the computing unit 100, the first electronic expansion valve 107 is arranged close to the first cooler 103, the refrigerant outlet pipeline 1011 is communicated with the first internal refrigerant pipeline 1032 in the first cooler 103, and thus the refrigerant in the refrigerant outlet pipeline 1011 can be introduced into the first cooler 103.

The first inner refrigerant pipe 1032 of the first cooler 103 communicates with the refrigerant return pipe 1012 of the compressor refrigerant circuit 101, and the refrigerant entering the first inner refrigerant pipe 1032 of the first cooler 103 can flow back into the compressor refrigerant circuit 101, thereby realizing the recycling of the refrigerant.

The cooling of the computing unit 100 may be achieved by using the compressor 1013 and the condenser 1014 that are already present in an autonomous vehicle, which on the one hand enables an independent control of the thermal management of the computing unit 100 and on the other hand may also improve the resource utilization. In addition, the opening of the first cooler 103 can be conveniently controlled by the first electronic expansion valve 107, so that the first cooler 103 can be conveniently controlled to complete the cooling of the computing unit 100.

In an optional embodiment, as shown in fig. 6, the thermal management system further comprises: a heating ventilation and air conditioning HVAC201 and a second electronic expansion valve 202;

the HVAC is connected in parallel between the refrigerant liquid outlet pipeline and the refrigerant liquid return pipeline;

the refrigerant lines inside the HVAC communicate with the refrigerant outlet lines through a second electronic expansion valve 202.

HVAC may also be understood as an air conditioning system, and embodiments of the present disclosure may specifically employ air conditioning systems of the related art.

The HVAC is connected in parallel between the refrigerant outlet line and the refrigerant return line of the compressor refrigerant circuit 101, and is cooled by the compressor refrigerant circuit 101. Specifically, the compressor 1013 generates a gaseous refrigerant that is passed through the condenser 1014, the condenser 1014 liquefies the gaseous refrigerant, and in the case where the computing unit 100 needs to be cooled, and in the case where the HVAC needs to be cooled, the second electronic expansion valve 202 is opened, and the refrigerant enters the HVAC. The manner of using the compressor refrigerant circuit 101 to perform thermal management on the HVAC system may be an air conditioning system in the related art, and will not be described herein again.

The heat management and calculation unit of the air conditioning system in the automatic driving vehicle can share the compressor loop 105, and the air conditioning system and the calculation unit are independently subjected to heat management, namely the heat management of the air conditioning system and the heat management of the calculation unit are not affected mutually, so that the control is more flexible and accurate. Preventing system bugs or security risks due to thermal management conflicts.

In an optional embodiment, as shown in fig. 7, the thermal management system according to the embodiment of the present disclosure, the autonomous vehicle further includes: a battery pack 300; the thermal management system further comprises: a second antifreeze circuit 302, a second cooler 303, a second water pump 304 and a three-way valve 308;

second antifreeze circuit 302 includes: a second antifreeze liquid inlet pipeline 3021 and a second antifreeze liquid return pipeline 3022;

a third internal anti-freezing solution pipeline 3001 is arranged in the battery pack 300, an inlet of the third internal anti-freezing solution pipeline 3001 is communicated with a second anti-freezing solution inlet pipeline 3021, and an outlet of the third internal anti-freezing solution pipeline 3001 is communicated with a second anti-freezing solution return pipeline 3022;

the second cooler 303 includes: a fourth inner antifreeze line 3031 and a second inner refrigerant line 3032; an inlet of the fourth internal anti-freezing solution pipeline 3031 is communicated with a second anti-freezing solution return pipeline 3022, and an outlet of the fourth internal anti-freezing solution pipeline 3031 is communicated with a second anti-freezing solution inlet pipeline 3021;

an inlet of the second inner refrigerant pipe 3032 is communicated with the refrigerant liquid outlet pipe 1011, and an outlet thereof is communicated with the refrigerant liquid return pipe 1012; for cooling the anti-icing liquid in the fourth inner anti-icing liquid line 3031 by means of the refrigerant when the compressor refrigerant circuit 101 is switched on;

a second water pump 304, disposed on the second antifreeze return pipe 3022, for pumping the antifreeze in the battery pack 300 into the second cooler 303;

the three-way valve 308 is provided on the refrigerant outlet line 1011 so that the refrigerant enters the first cooler 103 and the second cooler 303, respectively.

The refrigerant in the compressor refrigerant circuit 101 is introduced into the second cooler 303 through the second inner refrigerant line 3032 of the second cooler 303, the refrigerant evaporates in the second cooler 303 and absorbs ambient heat, thereby cooling the antifreeze in the fourth inner antifreeze line 3031 of the second cooler 303, the fourth inner antifreeze line 3031 is connected in series with the second antifreeze circuit 302 and cools the antifreeze in the second antifreeze circuit 302, and the second antifreeze circuit 302 is communicated with the third inner antifreeze line 3001, thereby cooling the battery pack 300.

In the embodiment of the disclosure, the thermal management of the computing unit is realized, the thermal management of the battery pack can be performed, the thermal management of the battery pack and the thermal management of the computing unit are not affected, and the control is more flexible and accurate. Preventing system bugs or security risks due to thermal management conflicts.

The compressor refrigerant circuits including the compressor 1013 and the condenser 1014 are respectively connected to the circuits for thermally managing the computing unit, the air conditioning system, and the battery pack by the three-way valve 308, so that the refrigerant can be introduced into the circuits for thermally managing the computing unit, the air conditioning system, and the battery pack to independently implement the thermal management of the computing unit, the air conditioning system, and the battery pack.

The embodiment of the disclosure can also realize the cooling management of the battery pack on the basis of realizing the thermal management of the computing unit and the HVAC, and the thermal management of the computing unit, the HVAC and the battery pack is related and independent and does not influence each other, thereby improving the flexibility of cooling control and reducing the risk of thermal management conflict. And a compressor refrigerant loop is shared, so that the resource utilization rate is improved.

In an optional embodiment, as shown in fig. 7, the thermal management system provided in the embodiment of the present disclosure may further include: the second water heating heater 305;

the second water heater 305 is provided in the second antifreeze solution inlet pipe 3021 between the battery pack 300 and the second cooler 303, and heats the antifreeze solution in the second antifreeze solution inlet pipe 3021 when it is turned on.

The second water heater 305 is connected in series to the second antifreeze solution inlet pipe 3021, and when heating is required, the second water heater 305 is activated, and the second water heater 305 heats the antifreeze solution in the second antifreeze solution inlet pipe 3021, so that the heated antifreeze solution passes through the second antifreeze solution inlet pipe 3021 and enters the third inner antifreeze solution pipe 3001 in the battery pack 300, thereby heating the battery pack 300.

The embodiment of the disclosure can independently heat the battery pack, and can realize the heating management of the battery pack on the basis of carrying out the heat management on the computing unit and the HVAC, thereby improving the flexibility of heating control and reducing the risk of heat management conflict.

The system can be independently controlled according to the heat management requirements of HVAC, battery pack, computing unit and the like, and is independent of each other. The conflict between the thermal management of the computing unit and the thermal management requirements of the HVAC and the battery pack is avoided, and the risk of thermal management of the computing unit caused by the difference between the thermal management requirements of the computing unit and other thermal management requirements is prevented.

In an optional embodiment, as shown in fig. 7, a second temperature sensor 306 is further disposed on the second antifreeze liquid inlet pipe 3021, and the second temperature sensor 306 is disposed between the second water heating heater 305 and the battery pack 300 for measuring the temperature of antifreeze liquid entering the third internal antifreeze liquid pipe 3001 of the battery pack 300; the second cooler 303 and the second warming-in-water heater 305 are turned on or off by the temperature control.

The thermal management system may further comprise: and the second temperature control switch is respectively connected with the second temperature sensor, the second cooler and the second heater to realize the on and off of the second cooler and the second heater under the control of temperature.

The second temperature sensor 306 may measure the temperature of the antifreeze entering the third internal antifreeze pipeline 3001 of the battery pack 300, and start the thermal management strategy by comparing the measured temperature with a preset allowable temperature of the battery pack 300, that is, the temperature may be adjusted by the thermal management system, where the preset allowable temperature of the battery pack 300 may be determined according to actual requirements, for example, may be a temperature value within a range of 30 degrees celsius to 50 degrees celsius. The cooling is performed when the temperature is higher than the preset allowable temperature of the battery pack 300, and the heating is performed when the temperature is lower than the preset allowable temperature of the battery pack 300.

When the temperature is higher than the preset allowable temperature of the battery pack 300, the second cooler 303 is turned on by the second temperature control switch, the antifreeze in the fourth inner antifreeze line 3031 is cooled by the refrigerant when the second cooler 303 is turned on, specifically, the refrigerant in the compressor refrigerant circuit 101 is introduced into the second cooler 303 through the second inner refrigerant line 3032 of the second cooler 303, and the refrigerant evaporates in the second cooler 303 to absorb ambient heat, thereby cooling the antifreeze in the fourth inner antifreeze line 3031 of the second cooler 303, and the fourth inner antifreeze line 3031 is connected in series to the second antifreeze circuit 302, thereby cooling the antifreeze in the second antifreeze circuit 302. The second antifreeze circuit 302 communicates with the third internal antifreeze conduit 3001 so that the battery pack 300 can be cooled.

When the temperature is lower than the preset allowable temperature of the battery pack 300, the second water heater 305 is turned on by the second temperature control switch, and the antifreeze in the second antifreeze inlet pipe 3021 is heated when the second water heater 305 is turned on. Specifically, when second water heater 305 is turned on, second water heater 305 heats antifreeze solution in second antifreeze solution inlet pipe 3021, so that the heated antifreeze solution passes through second antifreeze solution inlet pipe 3021 and enters third inner antifreeze solution pipe 3001 in battery pack 300 to heat battery pack 300.

By measuring the temperature of the antifreeze solution entering the third internal antifreeze solution pipeline 3001 of the battery pack 300 in the embodiment of the present disclosure, the second cooling 303 and the second water heating heater 305 may be controlled to be turned on or off according to the actual temperature of the antifreeze solution, so as to achieve precise temperature control of the battery pack.

In an optional embodiment, as shown in fig. 7, the thermal management system further comprises: a third electronic expansion valve 307; the third electronic expansion valve 307 is arranged close to the second cooler 303, and is used for communicating the refrigerant liquid outlet pipe 1011 with the second internal refrigerant pipe 3032 in the second cooler 303 and conveying the refrigerant output by the condenser 1014 into the second internal refrigerant pipe 3032;

the first electronic expansion valve 107 is disposed between the three-way valve 308 and the first cooler 103, and the third electronic expansion valve 307 is disposed between the three-way valve 308 and the second cooler 303.

The original compressor 1013 and condenser 1014 in the autonomous vehicle can be used to realize cooling of the computing unit 100, and the original compressor 1013 and condenser 1014 can be used to realize cooling of the battery pack 300, so that on one hand, the computing unit 100 and the battery pack 300 can be independently controlled for thermal management, and on the other hand, the resource utilization rate can be improved. In addition, the third electronic expansion valve 307 can conveniently control the opening of the second cooler 303, so that the second cooler 303 can be conveniently controlled to complete cooling of the battery pack 300.

In an alternative embodiment, as shown in fig. 7, the thermal management system further comprises: an expansion tank 309;

the expansion kettle 309 is communicated with the first antifreeze solution inlet pipeline 1021 and the second antifreeze solution return pipeline 3022, and is used for adding antifreeze solution to the antifreeze solution return pipeline.

The circulation of the antifreeze in the antifreeze loop can be ensured through the expansion kettle, and a foundation is provided for realizing the independent geothermal management of the computing unit and the battery pack.

In an optional embodiment, as shown in fig. 7, the thermal management system further comprises: a fan 401 mounted near the condenser 1014;

the compressor refrigerant circuit 101 further includes:

a drying tank 402; the drying tank 402 is placed on a refrigerant outlet line 1011 of the condenser 1014 communicating with the first cooler 103.

A pressure sensor 403; pressure sensor 403 is located on refrigerant outlet line 1011 connecting condenser 1014 with first cooler 103.

The fan 401, which is installed near the condenser 1014, is used to dissipate heat from the condenser 1014, so that the condenser 1014 itself can be guaranteed to operate normally, and normal operation of the computing unit thermal management is guaranteed.

Dryer can 402, which may also be referred to as a storage tank, functions to remove residual moisture from the thermal management system in addition to filtering contaminants from the thermal management system.

The pressure sensor 403 prevents the thermal management system from operating at the very limited refrigerant line pressure and helps control the speed of the engine cooling fan.

The pressure sensor 403 may output a pressure signal to the engine and when the compressor refrigerant circuit pressure is detected to be too low or too high, the control system stops powering the compressor 1013 clutch and the compressor 1013 stops operating to avoid damage to the thermal management system. When the refrigerant pressure reaches a medium pressure value, the fan operates at a high speed to reduce the refrigerant pressure.

An embodiment of the present disclosure provides an autonomous vehicle, including: the thermal management system of any of the above embodiments.

In addition to the heat management system, the autonomous vehicle may include components included in the autonomous vehicle of the related art. It is understood that, in addition to the heat management system, other components in the autonomous vehicle and the structure, shape, etc. between the components may refer to the related art, and are not described herein again.

The thermal management system provided by the embodiment of the disclosure can independently control the thermal management of the computing unit in the automatic driving vehicle, the thermal management of the computing unit and the thermal management of other directions are independent, the control is more flexible and accurate, system bug or safety risk caused by thermal management conflict can be prevented, and the safety of the automatic driving vehicle comprising the thermal management system can be further improved.

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present disclosure may be executed in parallel or sequentially or in different orders, and are not limited herein as long as the desired results of the technical solutions disclosed in the present disclosure can be achieved.

The above detailed description should not be construed as limiting the scope of the disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims (13)

1. An autonomous vehicle thermal management system, the autonomous vehicle comprising a computing unit; the thermal management system comprises: the system comprises a compressor refrigerant loop, a first antifreeze loop, a first cooler and a first water pump;

a first internal anti-freezing liquid pipeline is arranged in the computing unit and is connected in series in the first anti-freezing liquid loop;

the first cooler includes: a second internal antifreeze line and a first internal refrigerant line; the second internal antifreeze line is connected in series in the first antifreeze circuit; said first inner refrigerant line being connected in series in said compressor refrigerant circuit;

the first water pump is connected in series in the first antifreeze liquid loop and used for pumping antifreeze liquid in the first cooler to the first internal antifreeze liquid pipeline in the computing unit.

2. The thermal management system of claim 1, wherein the compressor refrigerant circuit comprises: a refrigerant outlet line and a refrigerant return line;

the first antifreeze circuit includes: a first antifreeze liquid inlet pipeline and a first antifreeze liquid return pipeline;

an inlet of a first internal antifreeze liquid pipeline in the computing unit is communicated with the first antifreeze liquid inlet pipeline, and an outlet of the first internal antifreeze liquid pipeline in the computing unit is communicated with the first antifreeze liquid return pipeline;

an inlet of a second inner antifreeze liquid pipeline in the first cooler is communicated with the first antifreeze liquid return pipeline, and an outlet of the second inner antifreeze liquid pipeline in the first cooler is communicated with the first antifreeze liquid inlet pipeline;

the inlet of a first internal refrigerant pipeline in the first cooler is communicated with the refrigerant liquid outlet pipeline, and the outlet of the first internal refrigerant pipeline in the first cooler is communicated with the refrigerant liquid return pipeline; a first cooler for cooling the antifreeze in the second internal antifreeze line by a refrigerant when the first cooler is turned on;

the first water pump is arranged on the first antifreeze solution inlet pipeline.

3. The thermal management system of claim 2, further comprising: a first water heater;

the first water heating heater is arranged on a first antifreeze liquid return pipeline between the computing unit and the first cooler and used for heating antifreeze liquid in the first antifreeze liquid return pipeline when the first water heating heater is started.

4. The thermal management system according to claim 3, further provided with a first temperature sensor on said first antifreeze feed line, said first temperature sensor being disposed between said first water pump and said computing unit for measuring the temperature of antifreeze entering said first internal antifreeze line of said computing unit; the first cooler and the first water heater are turned on or off by this temperature control.

5. The thermal management system of claim 4, further comprising: a first electronic expansion valve; the compressor refrigerant circuit further includes: a compressor and a condenser;

the condenser and the first electronic expansion valve are arranged on the refrigerant outlet pipeline in series;

the condenser is arranged close to the compressor;

the first electronic expansion valve is arranged close to the first cooler and used for communicating the refrigerant liquid outlet pipeline with a first internal refrigerant pipeline in the first cooler and conveying the refrigerant output by the condenser to the first internal refrigerant pipeline of the first cooler.

6. The thermal management system of claim 5, further comprising: a heating ventilation and air conditioning HVAC and a second electronic expansion valve;

the HVAC is connected in parallel between the refrigerant outlet line and the refrigerant return line;

and a refrigerant pipeline inside the HVAC is communicated with the refrigerant liquid outlet pipeline through the second electronic expansion valve.

7. The thermal management system of claim 5, the autonomous vehicle further comprising: a battery pack; the thermal management system further comprises: the second antifreeze solution loop, a second cooler, a second water pump and a three-way valve;

the second antifreeze circuit includes: a second antifreeze solution inlet pipeline and a second antifreeze solution return pipeline;

a third inner anti-freezing solution pipeline is arranged in the battery pack, an inlet of the third inner anti-freezing solution pipeline is communicated with the second anti-freezing solution liquid inlet pipeline, and an outlet of the third inner anti-freezing solution pipeline is communicated with the second anti-freezing solution return pipeline;

the second cooler includes: a fourth internal antifreeze fluid line and a second internal refrigerant line; an inlet of the fourth internal antifreeze liquid pipeline is communicated with the second antifreeze liquid return pipeline, and an outlet of the fourth internal antifreeze liquid pipeline is communicated with the second antifreeze liquid inlet pipeline;

the inlet of the second internal refrigerant pipeline is communicated with the refrigerant liquid outlet pipeline, and the outlet of the second internal refrigerant pipeline is communicated with the refrigerant liquid return pipeline; means for cooling antifreeze in said fourth internal antifreeze line with refrigerant when said compressor refrigerant circuit is open;

the second water pump is arranged on the second antifreeze liquid return pipeline and is used for pumping the antifreeze liquid in the battery pack into the second cooler;

the three-way valve is arranged on the refrigerant outlet pipeline, so that the refrigerant enters the first cooler and the second cooler respectively.

8. The thermal management system of claim 7, further comprising: a second water heater;

the second water-heating heater is arranged in a second antifreeze solution inlet pipeline between the battery pack and the second cooler and used for heating antifreeze solution in the second antifreeze solution inlet pipeline when the second water-heating heater is started.

9. The thermal management system according to claim 8, further comprising a second temperature sensor disposed on the second antifreeze liquid inlet pipe, said second temperature sensor being disposed between said second water heater and said battery pack for measuring the temperature of antifreeze liquid entering the third inner antifreeze liquid pipe of the battery pack; the second cooler and the second water heating heater are turned on or off by the temperature control.

10. The thermal management system of claim 7, further comprising: a third electronic expansion valve; the third electronic expansion valve is arranged close to the second cooler and is used for communicating the refrigerant liquid outlet pipeline with a second internal refrigerant pipeline in the second cooler and conveying the refrigerant output by the condenser to the second internal refrigerant pipeline;

the first electronic expansion valve is arranged between the three-way valve and the first cooler, and the third electronic expansion valve is arranged between the three-way valve and the second cooler.

11. The thermal management system of claim 7, further comprising: an expansion kettle;

the expansion kettle is communicated with the first antifreeze solution inlet pipeline and the second antifreeze solution return pipeline and is used for adding antifreeze solution to the antifreeze solution return pipeline.

12. The thermal management system of claim 5, further comprising: a fan mounted adjacent to the condenser;

the compressor refrigerant circuit further includes:

a drying tank; the drying tank is positioned on a refrigerant liquid outlet pipeline communicated with the condenser and the first cooler;

a pressure sensor; the pressure sensor is positioned on a refrigerant liquid outlet pipe communicated with the condenser and the first cooler.

13. An autonomous vehicle, comprising: a thermal management system according to any of claims 1 to 12.

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