CN116021953A

CN116021953A - Heating and heat storage processing method based on vehicle thermal management system and vehicle

Info

Publication number: CN116021953A
Application number: CN202211718611.0A
Authority: CN
Inventors: 陈强; 张皓; 刘月桥; 杨运斌; 王杨
Original assignee: Zhejiang Geely Holding Group Co Ltd; Geely Automobile Research Institute Ningbo Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Geely Automobile Research Institute Ningbo Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-04-28

Abstract

The application provides a processing method for heating and heat storage based on a vehicle thermal management system and an automobile, wherein the vehicle thermal management system comprises the following components: a coolant circuit and a refrigerant circuit; the method comprises the following steps: determining whether to heat a battery and/or a passenger cabin in the vehicle thermal management system according to the environmental information and the current state information of the vehicle thermal management system; when the battery and/or the passenger cabin in the vehicle thermal management system are heated, a matched heating mode is obtained; under the matched heating mode, heating treatment is carried out on the cooling liquid loop by utilizing the electric drive waste heat; and/or performing heat storage treatment through a battery cooler; and/or performing heating treatment by using a refrigerant circuit; and/or performing heating treatment by using a battery cooler. The problems that the existing new energy automobile does not recycle the redundant heat in the automobile, so that the energy consumption is high and the comfort in the automobile in winter is poor are solved.

Description

Heating and heat storage processing method based on vehicle thermal management system and vehicle

Technical Field

The application relates to the technical field of new energy automobiles, in particular to a heating and heat storage processing method based on a vehicle thermal management system and an automobile.

Background

New energy automobiles are increasingly favored by people because of lower emission and saving of limited resources such as fuel oil. For a new energy automobile mainly taking a storage battery as a power source, the energy is very precious, and the excessive energy consumption can cause the significant reduction of the endurance mileage of the automobile.

At present, the temperature of a new energy automobile is low in winter, the heat requirement for heating a passenger cabin and a battery is high, but available heat sources of the automobile are limited, so that most new energy automobiles use an electric heater as a main heat source. However, the electric heater has high energy consumption, so that the vehicle endurance mileage is greatly reduced. Meanwhile, the passenger cabin, the battery and the electric drive loop have considerable heat which is not utilized, and the full recycling of the residual heat is necessary.

However, the heat is not recovered and stored in the prior art, so that the comfort in the vehicle in winter is relatively low while the energy consumption is improved.

Disclosure of Invention

The application provides a heating and heat storage processing method based on a vehicle thermal management system and an automobile, which are used for solving the problems that the existing new energy automobile is high in energy consumption and poor in comfort in the automobile in winter.

In a first aspect, the present application provides a method for processing heating and heat storage based on a thermal management system for a vehicle, the thermal management system for a vehicle comprising: a coolant circuit and a refrigerant circuit; wherein the method comprises the following steps: determining whether to heat a battery and/or a passenger cabin in the vehicle thermal management system according to the environment information and the current state information of the vehicle thermal management system; when the battery and/or the passenger cabin in the vehicle thermal management system are heated, a matched heating mode is obtained; under the matched heating mode, heating treatment is carried out on the cooling liquid loop by utilizing electric drive waste heat; and/or performing heat storage treatment through a battery cooler; and/or performing heating treatment by using a refrigerant circuit; and/or performing heating treatment by using a battery cooler.

In a specific embodiment, when determining to heat the battery in the vehicle thermal management system, performing heating treatment on the cooling liquid loop by using electric drive waste heat in the matched heating mode; and/or performing heat storage treatment through a battery cooler; and/or performing heating treatment by using a refrigerant circuit; and/or performing a heating process using a battery cooler, comprising: under a battery heating mode of heating and matching the battery, heating the battery cooling loop by using electric drive waste heat on the cooling liquid loop; and/or performing heat storage treatment on the refrigerant loop through a battery cooler, and performing heating treatment on the battery cooling loop through the battery cooler on the cooling liquid loop.

In a specific embodiment, in the case that the battery heating mode is the first battery heating mode, the heating the battery cooling circuit by using the electric drive waste heat on the cooling liquid circuit includes: triggering the conduction of a first channel and a second channel of a four-way valve on a cooling liquid loop, and the conduction of the second channel of a first three-way water valve and the conduction of the second channel of a second three-way water valve; and heating the cooling liquid by using the electric drive waste heat generated by the electric drive module on the cooling liquid loop, so that the warmed cooling liquid heats the battery on the battery cooling loop.

In one specific embodiment, in the case where the battery heating mode is the second battery heating mode, the heat storage processing is performed on the refrigerant circuit by a battery cooler, and the heating processing is performed on the cooling liquid circuit by the battery cooler, including: the method comprises the steps of respectively triggering a second stop valve, a third stop valve and a fifth stop valve on a refrigerant loop to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, closing an evaporator inlet electronic expansion valve, and conducting a battery cooler inlet electronic expansion valve and an external air cooler outlet electronic expansion valve so that the battery cooler stores heat in the refrigerant loop; and respectively triggering the conduction of a third channel and the conduction of a fourth channel of the four-way valve on the cooling liquid loop so that the battery cooler heats the battery through the battery cooling loop.

In one specific embodiment, in the case where the battery heating mode is the third battery heating mode, the heat storage processing is performed on the refrigerant circuit by a battery cooler, and the heating processing is performed on the cooling liquid circuit by the battery cooler, including: the method comprises the steps of respectively triggering the conduction of a third channel and a fourth channel of a four-way valve on a cooling liquid loop, the conduction of a second channel of a first three-way water valve, the conduction of a first channel of a second three-way water valve and the conduction of a second channel of a third three-way water valve; heating the cooling liquid by using electric drive waste heat generated by an electric drive module on the cooling liquid loop, so that the warmed cooling liquid is recycled after the heating compressor is sucked in a water-cooling air cooler on the cooling liquid loop; and respectively triggering a second stop valve, a third stop valve and a fifth stop valve on the refrigerant loop to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, closing the electronic expansion valve at the inlet of the evaporator, and conducting the electronic expansion valve at the inlet of the battery cooler and the electronic expansion valve at the outlet of the external air cooler so as to store heat in the refrigerant loop by the battery cooler and heat the battery by the battery cooling loop.

In a specific embodiment, when the battery heating mode is a fourth battery heating mode, the battery cooling circuit is subjected to heating treatment by using electric drive waste heat on the cooling liquid circuit; and performing heat storage processing on the refrigerant circuit by a battery cooler, and performing heating processing on the battery cooling circuit by the battery cooler on the cooling liquid circuit, comprising: the method comprises the steps of respectively triggering the conduction of a first channel and a second channel of a four-way valve on a cooling liquid loop, and enabling the conduction of the second channel of a first three-way water valve and the conduction of the second channel of a second three-way water valve; heating the cooling liquid by using electric drive waste heat generated by an electric drive module on the cooling liquid loop, so that the warmed cooling liquid heats the battery on the battery cooling loop; and respectively triggering a second stop valve, a third stop valve and a fifth stop valve on the refrigerant loop to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, closing the electronic expansion valve at the inlet of the evaporator, and conducting the electronic expansion valve at the inlet of the battery cooler and the electronic expansion valve at the outlet of the external air cooler so as to store heat in the refrigerant loop by the battery cooler and heat the battery by the battery cooling loop.

In a specific embodiment, when determining to heat the passenger cabin in the vehicle thermal management system, performing heating treatment on the cooling liquid loop by using electric drive waste heat in the matched heating mode; and/or performing heat storage treatment through a battery cooler; and/or performing heating treatment by using a refrigerant circuit; and/or performing a heating process using a battery cooler, comprising: in a passenger cabin heating mode of heating and matching the passenger cabin, the passenger cabin is heated by a refrigerant loop; and/or heat treating the passenger compartment with a battery cooler.

In one embodiment, in the case that the passenger compartment heating mode is the first passenger compartment heating mode, the heating process of the passenger compartment by using the battery cooler includes: the third channel conduction and the fourth channel conduction of the four-way valve on the cooling liquid loop are respectively triggered; and the second stop valve and the fourth stop valve on the refrigerant loop are respectively triggered to be conducted, the first stop valve, the third stop valve, the fifth stop valve and the sixth stop valve are closed, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are closed, and the battery cooler inlet electronic expansion valve is conducted, so that heat stored in the battery cooler heats the air sucked by the compressor in the refrigerant loop, and indirectly heats the passenger cabin.

In a specific embodiment, when the passenger cabin heating mode is the second passenger cabin heating mode, the passenger cabin is subjected to heating treatment by using the refrigerant loop; and heating the passenger compartment with a battery cooler, comprising: the third channel conduction and the fourth channel conduction of the four-way valve on the cooling liquid loop are respectively triggered; the method comprises the steps of respectively triggering a second stop valve, a third stop valve and a fifth stop valve on a refrigerant circuit to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, conducting an electronic expansion valve at an inlet of a battery cooler, an electronic expansion valve at an inlet of an evaporator and an electronic expansion valve at an outlet of an external air cooler, and opening a blower to heat a passenger cabin by using the refrigerant circuit; the heat stored in the battery cooler is used to heat the compressor suction in the refrigerant circuit to indirectly heat the passenger compartment.

In one embodiment, when the passenger compartment heating mode is the third passenger compartment heating mode, the heating the passenger compartment with the refrigerant circuit includes: the method comprises the steps of respectively triggering the conduction of a third channel and a fourth channel of a four-way valve on a cooling liquid loop, the conduction of a second channel of a first three-way water valve, the conduction of a first channel of a second three-way water valve and the conduction of a second channel of a third three-way water valve; heating the cooling liquid by using electric drive waste heat generated by an electric drive module on the cooling liquid loop, so that the warmed cooling liquid is recycled after the heating compressor is sucked in a water-cooling air cooler on the cooling liquid loop; and respectively triggering a second stop valve, a third stop valve and a fifth stop valve on the refrigerant circuit to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, closing the electronic expansion valve at the inlet of the battery cooler, conducting the electronic expansion valve at the inlet of the evaporator and the electronic expansion valve at the outlet of the external air cooler, and opening the air blower so as to heat the passenger cabin by using the refrigerant circuit.

In a specific embodiment, in determining to heat both the passenger cabin and the battery in the vehicle thermal management system, performing heating treatment on the coolant loop by using electric drive waste heat in the matched heating mode; and/or performing heat storage treatment through a battery cooler; and/or performing heating treatment by using a refrigerant circuit; and/or performing a heating process using a battery cooler, comprising: in a hybrid heating mode for performing heating matching on a passenger cabin and a battery in the vehicle thermal management system, performing heating treatment on the passenger cabin by using a refrigerant loop, and performing heating treatment on the battery cooling loop by using a battery cooler on the cooling liquid loop; or, the passenger cabin is heated by a refrigerant loop, and the battery cooling loop is heated by electric drive waste heat on the cooling liquid loop.

In one specific embodiment, when the hybrid heating mode is determined to be the first hybrid heating mode, the heating the passenger compartment with the refrigerant circuit and the heating the battery cooling circuit with the battery cooler on the coolant circuit includes: the method comprises the steps of respectively triggering a second stop valve, a third stop valve and a fifth stop valve on a refrigerant circuit to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, conducting an electronic expansion valve at an inlet of a battery cooler, an electronic expansion valve at an inlet of an evaporator and an electronic expansion valve at an outlet of an external air cooler, and opening a blower to heat a passenger cabin by using the refrigerant circuit; the battery cooler stores heat in the refrigerant loop; and triggering the conduction of a third channel and the conduction of a fourth channel of the four-way valve on the cooling liquid loop so that the battery cooler heats the battery through the battery cooling loop.

In one specific embodiment, when the hybrid heating mode is determined to be the second hybrid heating mode, the heating the passenger compartment with the refrigerant circuit and the heating the battery cooling circuit with the battery cooler on the coolant circuit includes: the method comprises the steps of respectively triggering the conduction of a third channel and a fourth channel of a four-way valve on a cooling liquid loop, the conduction of a second channel of a first three-way water valve, the conduction of a first channel of a second three-way water valve and the conduction of a second channel of a third three-way water valve; heating the cooling liquid by using electric drive waste heat generated by an electric drive module on the cooling liquid loop, so that the warmed cooling liquid is recycled after the heating compressor is sucked in a water-cooling air cooler on the cooling liquid loop; the method comprises the steps of respectively triggering a second stop valve, a third stop valve and a fifth stop valve on a refrigerant circuit to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, conducting an electronic expansion valve at an inlet of a battery cooler, an electronic expansion valve at an inlet of an evaporator and an electronic expansion valve at an outlet of an external air cooler, and opening a blower to heat a passenger cabin by using the refrigerant circuit; the battery cooler stores heat in the refrigerant circuit and heats the battery through the battery cooling circuit.

In one specific embodiment, when the hybrid heating mode is determined to be the third hybrid heating mode, the heating the passenger compartment by using the refrigerant circuit and the heating the battery cooling circuit by using the electric drive waste heat on the cooling liquid circuit include: the method comprises the steps of respectively triggering the conduction of a first channel and a second channel of a four-way valve on a cooling liquid loop, and enabling the conduction of the second channel of a first three-way water valve and the conduction of the second channel of a second three-way water valve; heating the cooling liquid by using electric drive waste heat generated by an electric drive module on the cooling liquid loop, so that the warmed cooling liquid heats the battery on the battery cooling loop; and respectively triggering a second stop valve, a third stop valve and a fifth stop valve on the refrigerant circuit to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, conducting the battery cooler inlet electronic expansion valve, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve, and opening the air blower to heat the passenger cabin by using the refrigerant circuit.

In a second aspect, the present application provides an electronic control unit comprising: a processor, a memory, a communication interface; the memory is used for storing executable instructions of the processor; wherein the processor is configured to perform the method of processing heating and heat storage based on the vehicle thermal management system of the first aspect via execution of the executable instructions.

In a third aspect, the present application provides a new energy automobile, comprising: the electronic control unit according to the second aspect, and the thermal management system for a vehicle.

The application provides a processing method for heating and heat storage based on a vehicle thermal management system and an automobile, wherein the vehicle thermal management system comprises the following components: a coolant circuit and a refrigerant circuit; the method comprises the following steps: determining whether to heat a battery and/or a passenger cabin in the vehicle thermal management system according to the environmental information and the current state information of the vehicle thermal management system; when the battery and/or the passenger cabin in the vehicle thermal management system are heated, a matched heating mode is obtained; under the matched heating mode, heating treatment is carried out on the cooling liquid loop by utilizing the electric drive waste heat; and/or performing heat storage treatment through a battery cooler; and/or performing heating treatment by using a refrigerant circuit; and/or performing heating treatment by using a battery cooler. Compared with the existing new energy automobile, the method and the device have the advantages that the extra heat in the automobile is not recycled, whether the battery and/or the passenger cabin are heated is determined according to the environment and the current state of the automobile heat management system, after a heating mode corresponding to a heating part is acquired, the cooling liquid loop and the refrigerant loop are utilized for heating or storing heat, the waste heat in the automobile heat management system is effectively utilized, and the problems that the energy consumption is high and the comfort in the automobile is poor in winter due to the fact that the existing new energy automobile does not recycle the extra heat in the automobile are solved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, it being obvious that the drawings in the following description are some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.

Fig. 1 is a schematic structural diagram of a thermal management system for a vehicle provided in the present application;

fig. 2 is a schematic flow chart of an embodiment of a method for processing heating and heat storage based on a vehicle thermal management system;

fig. 3a is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a first battery heating mode provided in the present application;

FIG. 3b is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a second battery heating mode provided in the present application;

FIG. 3c is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a third battery heating mode provided in the present application;

FIG. 3d is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a fourth battery heating mode provided in the present application;

FIG. 4a is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a first passenger compartment heating mode provided herein;

FIG. 4b is a schematic structural view of an embodiment of a thermal management system for a vehicle in a second passenger compartment heating mode provided herein;

FIG. 4c is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a third passenger compartment heating mode provided herein;

FIG. 5a is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a first hybrid heating mode provided in the present application;

FIG. 5b is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a second hybrid heating mode provided herein;

FIG. 5c is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a third hybrid heating mode provided in the present application;

fig. 6 is a schematic structural diagram of an electronic control unit provided in the present application.

Reference numerals illustrate:

101: a cooling liquid loop;

102: a refrigerant circuit;

103: a water-cooled air cooler;

111: a heat sink;

121: an integrated electric drive and control module;

131: a first three-way water valve;

141: a second three-way water valve;

151: a third three-way water valve;

161: an electric drive loop water pump;

171: an integrated charger module;

181: a four-way valve;

112: an external air cooler;

122: an internal air cooler;

201: a cooling liquid expansion kettle;

202: a battery loop water pump;

203: a battery;

204: a manual exhaust valve;

205: a fan;

206: a battery cooling circuit;

301: a compressor;

302: a regenerator;

303: a gas-liquid separator;

304: a first stop valve;

305: a second shut-off valve;

306: a third stop valve;

307: a battery cooler;

308: a fourth shut-off valve;

309: a fifth shut-off valve;

310: a sixth shut-off valve;

311: a battery cooler inlet electronic expansion valve;

312: an electronic expansion valve at the inlet of the evaporator;

313: an external air cooler outlet electronic expansion valve;

601: an evaporator;

602: a blower.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which a person of ordinary skill in the art would have, based on the embodiments in this application, come within the scope of protection of this application.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims of this application and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The terms referred to in this application are explained first:

battery cooler: the cooling liquid is used in a battery thermal management system, and the cooling liquid is used for taking away heat generated in the working process of the battery or providing heat for the battery, so that the battery is kept in a proper working temperature range, and the service life of the battery is prolonged.

In the prior art, a new energy automobile mainly uses a storage battery as a power source, and the endurance mileage of the automobile is greatly reduced due to the excessively high energy consumption. Because of the low winter air temperature, the heat demand for warming the passenger compartment and the battery is large, but the available heat sources of the vehicle are limited, so that most new energy automobiles use an electric heater as a main heat source. However, the electric heater has high energy consumption, so that the vehicle endurance mileage is greatly reduced. Meanwhile, the passenger cabin, the battery and the electric drive loop have considerable heat which is not utilized, and the full recycling of the residual heat is necessary. However, the heat is not recovered and stored in the prior art, so that the comfort in the vehicle in winter is relatively low while the energy consumption is improved.

Based on the technical problems, the technical conception process of the application is as follows: how to provide a method for controlling a vehicle thermal management system to recycle excess energy so as to reduce energy consumption and improve comfort in a vehicle in winter.

The following describes the technical scheme of the present application in detail through specific embodiments. It should be noted that the following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

Fig. 1 is a schematic structural diagram of a thermal management system for a vehicle provided in the present application. As shown in fig. 1, the heat management system for a vehicle includes: a coolant circuit 101, a refrigerant circuit 102, a water-cooled air cooler 103 for exchanging heat between the coolant and the refrigerant, and a battery cooler 307 for storing energy.

As shown by the solid line in fig. 1, the coolant loop 101 includes a radiator 111, an integrated electric drive and control module 121, a first three-way water valve 131, a second three-way water valve 141, a third three-way water valve 151, an electric drive loop water pump 161, an integrated charger module 171, a four-way valve 181, a coolant expansion kettle 201, a battery loop water pump 202, a battery 203, and a manual exhaust valve 204. Only the coolant circulates in the coolant loop 101, and is mainly used for cooling the integrated electric drive and control module 121 and the integrated charger module 171, and heating the battery.

As shown in fig. 1, each three-way water valve includes three outlets. Illustratively, the first passageway of the first three-way water valve 131 is the passageway between outlet 1 and outlet 2, and the second passageway is the passageway between outlet 1 and outlet 3; the first channel of the second three-way water valve 141 is a passage between the outlet 1 and the outlet 2, and the second channel is a passage between the outlet 1 and the outlet 3; the first channel of the third three-way water valve 151 is a passage between the outlet 1 and the outlet 3, and the second channel is a passage between the outlet 2 and the outlet 3.

As shown in fig. 1, the four-way valve 181 includes four outlets. The four-way valve 181 has a first passage between the outlet 1 and the outlet 2, a second passage between the outlet 3 and the outlet 4, a third passage between the outlet 1 and the outlet 4, and a fourth passage between the outlet 2 and the outlet 3.

As shown by the broken line of fig. 1, the refrigerant circuit 102 includes an external air cooler 112, an internal air cooler 122, a compressor 301, a regenerator 302, a gas-liquid separator 303, a first shut-off valve 304, a second shut-off valve 305, a third shut-off valve 306, a fourth shut-off valve 308, a fifth shut-off valve 309, a sixth shut-off valve 310, a battery cooler inlet electronic expansion valve 311, an evaporator inlet electronic expansion valve 312, an external air cooler outlet electronic expansion valve 313, an evaporator 601, and a blower 602. Only coolant is circulated in the refrigerant circuit 102, and is mainly used for heating the passenger compartment or the battery cooler.

The vehicle thermal management system further comprises a water-cooled air cooler 103, wherein the water-cooled air cooler 103 comprises channels for respectively circulating cooling liquid and refrigerant, and the cooling liquid and the refrigerant can exchange heat in the water-cooled air cooler 103.

The vehicle thermal management system includes a battery cooler 307. The heat generated in the refrigerant circuit 102 may be stored in the battery cooler 307 as the refrigerant flows through the battery cooler 307, and the heat in the coolant circuit may be stored in the battery cooler 307 as the coolant flows through the battery cooler 307. The heat stored in the battery cooler 307 may be used to heat the battery 203 through the battery cooling circuit 206, as well as to heat the passenger compartment.

Fig. 2 is a schematic flow chart of an embodiment of a heating and heat storage processing method based on a vehicle thermal management system. Referring to fig. 2, the method for processing heating and heat storage based on the vehicle thermal management system specifically comprises the following steps:

step S201: and determining whether to heat the battery and/or the passenger cabin in the vehicle thermal management system according to the environmental information and the current state information of the vehicle thermal management system.

In this embodiment, the environmental information may include a current vehicle exterior environment temperature, a vehicle exterior environment humidity, a vehicle exterior illumination intensity, and the like; the current status information may include a current vehicle speed, a current passenger compartment temperature, a current passenger compartment heating request status, a current battery temperature, a current battery thermal management status, a current battery coolant temperature, a current battery charge, a current cooling fan speed, a current electric drive module temperature, a current electric drive loop coolant temperature, a current electric drive operating status, and the like.

Specifically, whether to heat the passenger cabin in the vehicle thermal management system can be determined according to the current environmental temperature, the current passenger cabin temperature and the current passenger cabin heating request state; whether the battery cooling loop in the vehicle thermal management system is heated or not can be determined according to the current environment temperature, the current battery cooling liquid temperature and the current battery thermal management state; whether the electric drive waste heat recovery and utilization are performed or not can be determined according to the current electric drive module temperature, the current electric drive loop cooling liquid temperature, the current electric drive working state and the current battery thermal management request state.

Step S202: and when the battery and/or the passenger cabin in the vehicle thermal management system are heated, acquiring a matched heating mode.

In this embodiment, different components in the thermal management system for a vehicle are heated, matching different heating modes. Illustratively, the battery is heated, matching the battery heating mode; and heating the passenger cabin to match with a passenger cabin heating mode. And heating the passenger cabin and the battery at the same time, and matching a hybrid heating mode.

Step S203: under the matched heating mode, heating treatment is carried out on the cooling liquid loop by utilizing the electric drive waste heat; and/or performing heat storage treatment through a battery cooler; and/or performing heating treatment by using a refrigerant circuit; and/or performing heating treatment by using a battery cooler.

In this embodiment, after the matched heating modes are acquired, corresponding heating treatment is performed by using the heating components in the thermal management system for a vehicle.

For example, in the battery heating mode, heating treatment using the electric drive waste heat may be performed on the coolant circuit 101. Specifically, the cooling fluid is heated by using the residual heat of the electric drive generated by the electric drive module on the cooling fluid circuit 101, so that the warmed cooling fluid heats the battery 203 on the battery cooling circuit 206. The electric drive module includes an integrated electric drive and control module 121 and an integrated charger module 171.

In this embodiment, whether to heat a battery and/or a passenger compartment in the thermal management system for a vehicle is determined according to environmental information and current state information in which the thermal management system for a vehicle is located; when the battery and/or the passenger cabin in the vehicle thermal management system are heated, a matched heating mode is obtained; under the matched heating mode, heating treatment is carried out on the cooling liquid loop by utilizing the electric drive waste heat; and/or performing heat storage treatment through a battery cooler; and/or performing heating treatment by using a refrigerant circuit; and/or performing heating treatment by using a battery cooler. Compared with the existing new energy automobile, the method and the device have the advantages that the extra heat in the automobile is not recycled, whether the battery cooling loop and/or the passenger cabin are heated or not is determined according to the environment and the current state of the automobile heat management system, after a heating mode corresponding to a heating part is acquired, the cooling liquid loop and the refrigerant loop are utilized for heating or storing heat, the waste heat in the automobile heat management system is effectively utilized, and the problems that the energy consumption is high and the comfort in the automobile is poor in winter due to the fact that the existing new energy automobile does not recycle the extra heat in the automobile are solved.

On the basis of the embodiment shown in fig. 2, when the battery is mainly heated, the matched heating mode is the battery heating mode, and further, a specific implementation manner of the step S203 is as follows:

step S2031, performing heating treatment on a battery cooling loop by using electric drive waste heat on the cooling liquid loop; and/or performing heat storage treatment on the refrigerant loop through a battery cooler, and performing heating treatment on the battery cooling loop through the battery cooler on the cooling liquid loop.

More specifically, in the battery heating mode, the battery can be heated by using the electric drive waste heat and/or the battery cooler can be heated to realize specific heating treatment, and the heating treatment has the following realization modes:

first specific embodiment: and heating the battery by using the electric drive waste heat.

Then, the first specific implementation manner of step S2031 is:

step S20311, triggering the first channel conduction and the second channel conduction of the four-way valve on the coolant loop, the second channel conduction of the first three-way water valve and the second channel conduction of the second three-way water valve when the battery heating mode is the first battery heating mode; heating the cooling liquid by using electric drive waste heat generated by an electric drive module on the cooling liquid loop, so that the warmed cooling liquid heats the battery on the battery cooling loop; in this mode, the blower is not operated.

In this embodiment, taking fig. 3a as an example, fig. 3a is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a first battery heating mode provided in the present application, and in combination with the schematic structural diagram, a specific implementation manner of step S20311 is as follows: the cooling fluid provided by the cooling fluid expansion kettle 201 is pressurized by the electric drive loop water pump 161 and enters the integrated charger module 171 and the integrated electric drive and control module 121 through the second channel of the first three-way water valve 131. The integrated charger module 171 and the integrated electric drive and electric control module 121 generate electric drive waste heat to heat the cooling liquid, and the warmed cooling liquid enters the battery cooling loop 206 through the second channel of the second three-way water valve 141 and the four-way valve 181 to heat the battery 203. At the same time, battery cooler 307 may also store heat in battery cooling circuit 206. At this time, the refrigerant circuit 102 is not operated, and the blower 602 is not operated.

In the embodiment, by triggering the conduction of different passages of the four-way valve and the three-way water valves in the cooling liquid loop, the battery is heated by utilizing the electric drive waste heat, and meanwhile, the waste heat in the vehicle thermal management system is stored, so that the problems that the energy consumption is high and the comfort in the vehicle is poor in winter due to the fact that the existing vehicle thermal management system does not recycle the excessive heat in the vehicle are further solved.

A second specific embodiment: and heating the battery cooler.

Then, the second specific implementation manner of step S2031 is:

step S20312, when the battery heating mode is the second battery heating mode, respectively triggering the second stop valve, the third stop valve and the fifth stop valve on the refrigerant circuit to be turned on, closing the first stop valve, the fourth stop valve and the sixth stop valve, closing the electronic expansion valve at the inlet of the evaporator, and switching on the electronic expansion valve at the inlet of the battery cooler and the electronic expansion valve at the outlet of the external air cooler so as to enable the battery cooler to store heat in the refrigerant circuit; the third channel of the four-way valve on the cooling liquid loop is respectively triggered to be conducted, and the fourth channel of the four-way valve on the cooling liquid loop is respectively triggered to be conducted, so that the battery cooler heats the battery through the battery cooling loop; in this mode, the blower is not operated.

In this embodiment, taking fig. 3b as an example, fig. 3b is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a second battery heating mode provided in the present application, and in combination with the schematic structural diagram, a specific implementation manner of step S20312 is as follows: the second stop valve 305, the third stop valve 306, and the fifth stop valve 309 on the refrigerant circuit 102 are turned on, and the first stop valve 304, the fourth stop valve 308, and the sixth stop valve 310 are closed, so that the refrigerant circuit 102 is in the heating mode. The evaporator inlet electronic expansion valve 312 is closed and the battery cooler inlet electronic expansion valve 311 and the external air cooler outlet electronic expansion valve 313 are on, and the blower 602 is not operating, so that the refrigerant circuit 102 is now heating the battery cooler 307. In this mode, the battery cooler 307 stores the residual heat in the refrigerant circuit 102.

The third and fourth passages of the four-way valve 181 in the coolant circuit are connected, and the battery cooler 307 heats the battery 203 through the battery cooling circuit 206.

In this embodiment, the battery cooler is heated by triggering the refrigerant circuit, so that the battery cooler stores the waste heat in the refrigerant circuit, and further heats the battery. The problem that the energy consumption is high and the comfort in the vehicle in winter is poor due to the fact that the existing vehicle heat management system does not recycle the redundant heat in the vehicle is further solved.

Third specific embodiment: and heating the battery cooler.

Then, a third specific implementation manner of step S2031 is:

step S20313, when the battery heating mode is the third battery heating mode, respectively triggering the conduction of the third channel and the conduction of the fourth channel of the four-way valve on the cooling liquid loop, the conduction of the second channel of the first three-way water valve, the conduction of the first channel of the second three-way water valve and the conduction of the second channel of the third three-way water valve; heating the cooling liquid by using electric drive waste heat generated by an electric drive module on the cooling liquid loop, so that the warmed cooling liquid is recycled after the heating compressor is sucked in a water-cooling air cooler on the cooling liquid loop; the method comprises the steps of respectively triggering a second stop valve, a third stop valve and a fifth stop valve on a refrigerant loop to be conducted, closing a first stop valve, a fourth stop valve and a sixth stop valve, closing an evaporator inlet electronic expansion valve, and conducting a battery cooler inlet electronic expansion valve and an external air cooler outlet electronic expansion valve so that the battery cooler stores heat in the refrigerant loop and heats a battery through the battery cooling loop; in this mode, the blower is not operated.

In this embodiment, taking fig. 3c as an example, fig. 3c is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a third battery heating mode provided in the present application, and in combination with the schematic structural diagram, a specific implementation manner of step S20313 is as follows: the cooling fluid provided by the cooling fluid expansion kettle 201 is pressurized by the electric drive loop water pump 161 and enters the integrated charger module 171 and the integrated electric drive and control module 121 through the second channel of the first three-way water valve 131. The integrated charger module 171 and the integrated electric drive and electric control module 121 generate electric drive waste heat to heat the cooling liquid, the warmed cooling liquid enters the water-cooling air cooler 103 through the first channel of the second three-way water valve 141, and exchanges heat with the refrigerant in the water-cooling air cooler 103 to heat the suction gas of the compressor 301 in the refrigerant loop 102, so that the heating efficiency of the refrigerant loop is improved. At the same time, the heat-released coolant is returned to the electric drive circuit water pump 161 through the second passage of the third three-way water valve 151 and the four-way valve 181 for recirculation.

The second stop valve 305, the third stop valve 306, and the fifth stop valve 309 on the refrigerant circuit 102 are turned on, and the first stop valve 304, the fourth stop valve 308, and the sixth stop valve 310 are closed, so that the refrigerant circuit 102 is in the heating mode. The evaporator inlet electronic expansion valve 312 is closed and the battery cooler inlet electronic expansion valve 311 and the external air cooler outlet electronic expansion valve 313 are on, and the blower 602 is not operating, so that the refrigerant circuit 102 is now heating the battery cooler 307. In this mode, the battery cooler 307 stores the residual heat in the refrigerant circuit 102, and the battery cooler 307 heats the battery 203 through the battery cooling circuit 206.

In the embodiment, the cooling liquid in the cooling liquid loop heats the air suction of the compressor by utilizing the electric drive waste heat, so that the heating efficiency of the cooling liquid loop for the battery cooler is improved; the battery cooler stores the waste heat in the vehicle thermal management system on one hand, and on the other hand, the battery is heated through the battery cooling loop by utilizing the stored heat, so that the problems that the existing vehicle thermal management system does not recycle the redundant heat in the vehicle, the energy consumption is high and the comfort in the vehicle in winter is poor are further solved.

Fourth specific embodiment: and heating the battery by using the electric drive waste heat and heating a battery cooler.

Then, a fourth specific implementation manner of step S2031 is:

step S20314, when the battery heating mode is the fourth battery heating mode, respectively triggering the first channel conduction and the second channel conduction of the four-way valve on the coolant loop, the second channel conduction of the first three-way water valve, and the second channel conduction of the second three-way water valve; heating the cooling liquid by using electric drive waste heat generated by an electric drive module on the cooling liquid loop, so that the warmed cooling liquid heats the battery on the battery cooling loop; the method comprises the steps of respectively triggering a second stop valve, a third stop valve and a fifth stop valve on a refrigerant loop to be conducted, closing a first stop valve, a fourth stop valve and a sixth stop valve, closing an evaporator inlet electronic expansion valve, and conducting a battery cooler inlet electronic expansion valve and an external air cooler outlet electronic expansion valve so that the battery cooler stores heat in the refrigerant loop and heats a battery through the battery cooling loop; in this mode, the blower is not operated.

In this embodiment, taking fig. 3d as an example, fig. 3d is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a fourth battery heating mode provided in the present application, and in combination with the schematic structural diagram, a specific implementation manner of step S20314 is as follows: the cooling fluid provided by the cooling fluid expansion kettle 201 is pressurized by the electric drive loop water pump 161 and enters the integrated charger module 171 and the integrated electric drive and control module 121 through the second channel of the first three-way water valve 131. The integrated charger module 171 and the integrated electric drive and electric control module 121 generate electric drive waste heat to heat the cooling liquid, and the warmed cooling liquid enters the battery cooling loop 206 through the second channel of the second three-way water valve 141 and the four-way valve 181 to heat the battery 203. At the same time, battery cooler 307 may also store heat in battery cooling circuit 206.

In the embodiment, the four-way valve and the three-way water valves in the cooling liquid loop are triggered to be conducted in different paths, so that the battery is heated by using the electric drive waste heat; and the battery cooler heats the battery by triggering the refrigerant loop, so that the battery cooler stores the waste heat in the refrigerant loop, and then heats the battery. The battery is heated by utilizing the waste heat in the vehicle thermal management system, and meanwhile, the waste heat in the vehicle thermal management system is stored, so that the problems that the existing vehicle thermal management system is higher in energy consumption and poor in comfort in a vehicle in winter due to the fact that the residual heat in the vehicle is not recycled are further solved.

On the basis of the embodiment shown in fig. 2, when the passenger cabin is mainly heated, the matched cooling mode is the passenger cabin heating mode, and further, a specific implementation manner of the step S203 is as follows:

step S2032, in a passenger cabin heating mode of heating and matching the passenger cabin, heating the passenger cabin by using a refrigerant loop; and/or heat treating the passenger compartment with a battery cooler.

More specifically, in the passenger cabin heating mode, a specific heating process can be implemented by heating with a heat pump and/or using heat stored in a battery cooler, where the heating process is implemented in several ways as follows:

First specific embodiment: the heat stored by the battery cooler is utilized.

Then, the first specific implementation manner of step S2032 is:

step S20321, respectively triggering the third channel conduction and the fourth channel conduction of the four-way valve on the coolant loop when the passenger cabin heating mode is the first passenger cabin heating mode; and the second stop valve and the fourth stop valve on the refrigerant loop are respectively triggered to be conducted, the first stop valve, the third stop valve, the fifth stop valve and the sixth stop valve are closed, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are closed, and the battery cooler inlet electronic expansion valve is conducted, so that heat stored in the battery cooler heats the air sucked by the compressor in the refrigerant loop, and indirectly heats the passenger cabin.

In this embodiment, taking fig. 4a as an example, fig. 4a is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a first passenger cabin heating mode provided in the present application, and in combination with the schematic structural diagram, a specific implementation manner of step S20321 is as follows: the second shutoff valve 305 and the fourth shutoff valve 308 on the refrigerant circuit 102 are turned on, and the first shutoff valve 304, the third shutoff valve 306, the fifth shutoff valve 309, and the sixth shutoff valve 310 are closed, so that the refrigerant circuit 102 is in the heating mode. The evaporator inlet electronic expansion valve 312 and the external air cooler outlet electronic expansion valve 313 are closed and the battery cooler inlet electronic expansion valve 311 is open, so that the refrigerant circuit 102 now cools the battery cooler 307. The heat stored in the battery cooler 307 heats the compressor suction in the refrigerant circuit, thereby indirectly heating the passenger compartment.

In this embodiment, when only the passenger compartment needs to be heated, the battery cooler is cooled by the refrigerant circuit, and further, the passenger compartment is heated by using the heat stored in the battery cooler. The problem that the energy consumption is high and the comfort in the vehicle in winter is poor due to the fact that the existing vehicle heat management system does not recycle the redundant heat in the vehicle is further solved.

A second specific embodiment: the heat pump heats and utilizes the heat stored by the battery cooler.

Then, the second specific implementation manner of step S2032 is:

step S20322, when the passenger cabin heating mode is the second passenger cabin heating mode, respectively triggering the third channel conduction and the fourth channel conduction of the four-way valve on the cooling liquid loop; the method comprises the steps of respectively triggering a second stop valve, a third stop valve and a fifth stop valve on a refrigerant circuit to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, conducting an electronic expansion valve at an inlet of a battery cooler, an electronic expansion valve at an inlet of an evaporator and an electronic expansion valve at an outlet of an external air cooler, and opening a blower to heat a passenger cabin by using the refrigerant circuit; the heat stored in the battery cooler is used to heat the compressor suction in the refrigerant circuit to indirectly heat the passenger compartment.

In this embodiment, taking fig. 4b as an example, fig. 4b is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a second passenger cabin heating mode provided in the present application, and in combination with the schematic structural diagram, a specific implementation manner of step S20322 is as follows: the second stop valve 305, the third stop valve 306, and the fifth stop valve 309 on the refrigerant circuit 102 are turned on, and the first stop valve 304, the fourth stop valve 308, and the sixth stop valve 310 are closed, so that the refrigerant circuit 102 is in the heating mode. The battery cooler inlet electronic expansion valve 311, the evaporator inlet electronic expansion valve 312, and the external air cooler outlet electronic expansion valve 313 are all open, such that the refrigerant circuit 102 is now heating the passenger compartment and cooling the battery cooler 307. In this mode, the heat stored in the battery cooler 307 heats a portion of the compressor suction in the refrigerant circuit 102, thereby indirectly heating the passenger compartment.

In this embodiment, the refrigerant circuit heats the passenger compartment and the battery cooler refrigerates, and the battery cooler heats the passenger compartment by utilizing the heat stored by the refrigerant circuit, so that the problems that the existing vehicle thermal management system does not recycle the excessive heat in the vehicle, the energy consumption is high, and the comfort in the vehicle in winter is poor are further solved.

Third specific embodiment: and (5) heating by a heat pump.

Then, a third specific implementation manner of step S2032 is:

step S20323, when the passenger cabin heating mode is the third passenger cabin heating mode, triggering the third channel conduction and the fourth channel conduction of the four-way valve on the cooling liquid loop, the second channel conduction of the first three-way water valve, the first channel conduction of the second three-way water valve, and the second channel conduction of the third three-way water valve respectively; heating the cooling liquid by using electric drive waste heat generated by an electric drive module on the cooling liquid loop, so that the warmed cooling liquid is recycled after the heating compressor is sucked in a water-cooling air cooler on the cooling liquid loop; and respectively triggering a second stop valve, a third stop valve and a fifth stop valve on the refrigerant circuit to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, closing the electronic expansion valve at the inlet of the battery cooler, conducting the electronic expansion valve at the inlet of the evaporator and the electronic expansion valve at the outlet of the external air cooler, and opening the air blower so as to heat the passenger cabin by using the refrigerant circuit.

In this embodiment, taking fig. 4c as an example, fig. 4c is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a third passenger cabin heating mode provided in the present application, and in combination with the schematic structural diagram, a specific implementation manner of step S20323 is as follows: the cooling fluid provided by the cooling fluid expansion kettle 201 is pressurized by the electric drive loop water pump 161 and enters the integrated charger module 171 and the integrated electric drive and control module 121 through the second channel of the first three-way water valve 131. The integrated charger module 171 and the integrated electric drive and electric control module 121 generate electric drive waste heat to heat the cooling liquid, the warmed cooling liquid enters the water-cooling air cooler 103 through the first channel of the second three-way water valve 141, and exchanges heat with the refrigerant in the water-cooling air cooler 103 to heat the suction gas of the compressor 301 in the refrigerant loop 102, so that the heating efficiency of the refrigerant loop is improved. At the same time, the heat-released coolant is returned to the electric drive circuit water pump 161 through the second passage of the third three-way water valve 151 and the four-way valve 181 for recirculation.

The second stop valve 305, the third stop valve 306, and the fifth stop valve 309 on the refrigerant circuit 102 are turned on, and the first stop valve 304, the fourth stop valve 308, and the sixth stop valve 310 are closed, so that the refrigerant circuit 102 is in the heating mode. The battery cooler inlet electronic expansion valve 311 is closed and the evaporator inlet electronic expansion valve 312 and the external air cooler outlet electronic expansion valve 313 are open, so that the refrigerant circuit 102 is now heating the passenger compartment.

In this embodiment, the refrigerant loop heats the passenger cabin, and the cooling liquid in the cooling liquid loop heats the compressor by using the electric drive waste heat, so that the efficiency of heating the passenger cabin by the refrigerant loop is improved, the waste heat in the cooling liquid loop is effectively utilized, and the problems of higher energy consumption and poor comfort in the vehicle in winter caused by the fact that the existing vehicle thermal management system does not recycle the excessive heat in the vehicle are further solved.

On the basis of the embodiment shown in fig. 2, when the passenger cabin and the battery in the thermal management system for a vehicle are mainly heated, the matched heating mode is a hybrid heating mode, and further, a specific implementation manner of the step S203 is as follows:

step S2033, in a hybrid heating mode in which the passenger compartment and the battery in the thermal management system for the vehicle are subjected to heating matching, the passenger compartment is subjected to heating treatment by using the refrigerant circuit, and the battery cooling circuit is subjected to heating treatment by using the battery cooler on the coolant circuit; alternatively, the passenger compartment is heated by the refrigerant circuit, and the battery cooling circuit is heated by the electric drive waste heat on the cooling liquid circuit.

More specifically, in the hybrid heating mode, specific heating treatment can be realized by heating by a heat pump and utilizing heat stored in a battery cooler, or by heating by the heat pump and utilizing electric drive waste heat, and the heating treatment has the following realization modes:

first specific embodiment: the heat pump heats and utilizes the heat stored by the battery cooler.

Then, the first specific implementation manner of step S2033 is:

step S20331, when it is determined that the hybrid heating mode is the first hybrid heating mode, respectively triggering the second stop valve, the third stop valve and the fifth stop valve on the refrigerant circuit to be turned on, closing the first stop valve, the fourth stop valve and the sixth stop valve, turning on the battery cooler inlet electronic expansion valve, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve, and opening the blower to perform heating treatment on the passenger compartment by using the refrigerant circuit; the battery cooler stores heat in the refrigerant loop; and triggering the conduction of a third channel and the conduction of a fourth channel of the four-way valve on the cooling liquid loop so that the battery cooler heats the battery through the battery cooling loop.

In this embodiment, taking fig. 5a as an example, fig. 5a is a schematic structural diagram of an embodiment of a vehicle thermal management system in a first hybrid heating mode provided in the present application, and in combination with the schematic structural diagram, a specific implementation manner of step S20331 is as follows: the second stop valve 305, the third stop valve 306, and the fifth stop valve 309 on the refrigerant circuit 102 are turned on, and the first stop valve 304, the fourth stop valve 308, and the sixth stop valve 310 are closed, so that the refrigerant circuit 102 is in the heating mode. The battery cooler inlet electronic expansion valve 311, the evaporator inlet electronic expansion valve 312, and the external air cooler outlet electronic expansion valve 313 are all open, such that the refrigerant circuit 102 is now simultaneously heating the passenger compartment and the battery cooler. In this mode, the battery cooler 307 stores the residual heat in the refrigerant circuit 102.

The coolant in the battery cooling circuit 206 is circulated under pressure by the battery circuit water pump 202 to heat the battery 203. The heat stored in the battery cooler 307 may heat the battery through the battery cooling circuit 206.

In this embodiment, the refrigerant loop heats passenger cabin and battery cooler simultaneously, and the battery cooler on the one hand stores the waste heat in the automobile-used thermal management system, and on the other hand utilizes the heat that it stores, heats the battery through the battery cooling loop, has further solved the problem that the energy consumption that current automobile-used thermal management system did not carry out recycle to the unnecessary heat in the car and cause is higher and the comfort in winter is relatively poor in the car.

Then, the second specific implementation manner of step S2033 is:

step S20332, when it is determined that the hybrid heating mode is the second hybrid heating mode, triggering the third channel conduction and the fourth channel conduction of the four-way valve on the coolant loop, the second channel conduction of the first three-way water valve, the first channel conduction of the second three-way water valve, and the second channel conduction of the third three-way water valve respectively; heating the cooling liquid by using electric drive waste heat generated by an electric drive module on the cooling liquid loop, so that the warmed cooling liquid is recycled after the heating compressor is sucked in a water-cooling air cooler on the cooling liquid loop; the method comprises the steps of respectively triggering a second stop valve, a third stop valve and a fifth stop valve on a refrigerant circuit to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, conducting an electronic expansion valve at an inlet of a battery cooler, an electronic expansion valve at an inlet of an evaporator and an electronic expansion valve at an outlet of an external air cooler, and opening a blower to heat a passenger cabin by using the refrigerant circuit; the battery cooler stores heat in the refrigerant circuit and heats the battery through the battery cooling circuit.

In this embodiment, taking fig. 5b as an example, fig. 5b is a schematic structural diagram of an embodiment of a vehicle thermal management system in a second hybrid heating mode provided in the present application, and in combination with the schematic structural diagram, a specific implementation manner of step S20332 is as follows: the cooling fluid provided by the cooling fluid expansion kettle 201 is pressurized by the electric drive loop water pump 161 and enters the integrated charger module 171 and the integrated electric drive and control module 121 through the second channel of the first three-way water valve 131. The integrated charger module 171 and the integrated electric drive and electric control module 121 generate electric drive waste heat to heat the cooling liquid, the warmed cooling liquid enters the water-cooling air cooler 103 through the first channel of the second three-way water valve 141, and exchanges heat with the refrigerant in the water-cooling air cooler 103 to heat the suction gas of the compressor 301 in the refrigerant loop 102, so that the heating efficiency of the refrigerant loop is improved. At the same time, the heat-released coolant is returned to the electric drive circuit water pump 161 through the second passage of the third three-way water valve 151 and the four-way valve 181 for recirculation.

The second stop valve 305, the third stop valve 306, and the fifth stop valve 309 on the refrigerant circuit 102 are turned on, and the first stop valve 304, the fourth stop valve 308, and the sixth stop valve 310 are closed, so that the refrigerant circuit 102 is in the heating mode. The battery cooler inlet electronic expansion valve 311, the evaporator inlet electronic expansion valve 312, and the external air cooler outlet electronic expansion valve 313 are all open, such that the refrigerant circuit 102 is now simultaneously heating the passenger compartment and the battery cooler 307. In this mode, the battery cooler 307 stores the residual heat in the refrigerant circuit 102.

In this embodiment, the cooling liquid in the cooling liquid loop heats the compressor for air suction by utilizing the electric drive waste heat, so that the heating efficiency of the refrigerant loop for the passenger cabin and the battery cooler is improved, the waste heat in the vehicle thermal management system is stored on the battery cooler side, and the battery is heated by utilizing the stored heat of the battery cooler side, so that the problems of higher energy consumption and poor comfort in the vehicle in winter caused by the fact that the existing vehicle thermal management system does not recycle the excessive heat in the vehicle are further solved.

Third specific embodiment: the heat pump heats and utilizes the waste heat of the electric drive.

Then, a third specific implementation manner of step S2033 is:

step S20333, when it is determined that the hybrid heating mode is the third hybrid heating mode, respectively triggering the first channel conduction and the second channel conduction of the four-way valve on the coolant loop, the second channel conduction of the first three-way water valve, and the second channel conduction of the second three-way water valve; heating the cooling liquid by using electric drive waste heat generated by an electric drive module on the cooling liquid loop, so that the warmed cooling liquid heats the battery on the battery cooling loop; and respectively triggering a second stop valve, a third stop valve and a fifth stop valve on the refrigerant circuit to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, conducting the battery cooler inlet electronic expansion valve, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve, and opening the air blower to heat the passenger cabin by using the refrigerant circuit.

In this embodiment, taking fig. 5c as an example, fig. 5c is a schematic structural diagram of an embodiment of a thermal management system for a vehicle in a third hybrid heating mode provided in the present application, and in combination with the schematic structural diagram, a specific implementation manner of step S20333 is as follows: the cooling fluid provided by the cooling fluid expansion kettle 201 is pressurized by the electric drive loop water pump 161 and enters the integrated charger module 171 and the integrated electric drive and control module 121 through the second channel of the first three-way water valve 131. The integrated charger module 171 and the integrated electric drive and electric control module 121 generate electric drive waste heat to heat the cooling liquid, and the warmed cooling liquid enters the battery cooling loop 206 through the second channel of the second three-way water valve and the four-way valve 181 to heat the battery 203. At the same time, battery cooler 307 may also store heat in battery cooling circuit 206.

The second stop valve 305, the third stop valve 306, and the fifth stop valve 309 on the refrigerant circuit 102 are turned on, and the first stop valve 304, the fourth stop valve 308, and the sixth stop valve 310 are closed, so that the refrigerant circuit 102 is in the heating mode. The battery cooler inlet electronic expansion valve 311, the evaporator inlet electronic expansion valve 312, and the external air cooler outlet electronic expansion valve 313 are all open, such that the refrigerant circuit 102 is now simultaneously heating the passenger compartment and the battery cooler 307. In this mode, the battery cooler 307 also stores the residual heat in the refrigerant circuit 102.

In the embodiment, the four-way valve and the three-way water valves in the cooling liquid loop are triggered to be conducted in different paths, so that the battery is heated by using the electric drive waste heat, the refrigerating liquid loop heats the passenger cabin and the battery cooler at the same time, and the waste heat in the vehicle thermal management system is stored while the passenger cabin is heated. The problem that the energy consumption is high and the comfort in the vehicle in winter is poor due to the fact that the existing vehicle heat management system does not recycle the redundant heat in the vehicle is further solved.

Fig. 6 is a schematic structural diagram of an electronic control unit provided in the present application. As shown in fig. 6, the electronic control unit 60 includes: a processor 61, a memory 62, and a communication interface 63; wherein the memory 62 is used for storing executable instructions of the processor 61; the processor 61 is configured to perform the technical solutions of any of the method embodiments described above via execution of executable instructions.

Alternatively, the memory 62 may be separate or integrated with the processor 61.

Optionally, when the memory 62 is a device separate from the processor 61, the electronic device 60 may further include: bus 64 for connecting the above devices.

The electronic device is configured to execute the technical scheme in any of the foregoing method embodiments, and its implementation principle and technical effects are similar, and are not described herein again.

In this embodiment, a new energy automobile is further provided, and the new energy automobile includes an electronic control unit and a thermal management system for a vehicle as shown in fig. 6, which are not described herein again.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features can be replaced equivalently; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for processing heating and heat storage based on a vehicle thermal management system, characterized in that the vehicle thermal management system comprises: a coolant circuit and a refrigerant circuit; wherein the method comprises the following steps:

determining whether to heat a battery and/or a passenger cabin in the vehicle thermal management system according to the environment information and the current state information of the vehicle thermal management system;

When the battery and/or the passenger cabin in the vehicle thermal management system are heated, a matched heating mode is obtained;

under the matched heating mode, heating treatment is carried out on the cooling liquid loop by utilizing electric drive waste heat; and/or performing heat storage treatment through a battery cooler; and/or performing heating treatment by using a refrigerant circuit; and/or performing heating treatment by using a battery cooler.

2. The method for processing heat and stored energy based on a thermal management system for vehicles according to claim 1, wherein when determining to heat a battery in the thermal management system for vehicles, the heating process is performed on the coolant circuit using the residual heat of electric drive in the matched heating mode; and/or performing heat storage treatment through a battery cooler; and/or performing heating treatment by using a refrigerant circuit; and/or performing a heating process using a battery cooler, comprising:

under a battery heating mode of heating and matching the battery, heating the battery cooling loop by using electric drive waste heat on the cooling liquid loop; and/or performing heat storage treatment on the refrigerant loop through a battery cooler, and performing heating treatment on the battery cooling loop through the battery cooler on the cooling liquid loop.

3. The method for processing heat and stored energy based on a thermal management system for a vehicle according to claim 2, wherein in the case where the battery heating mode is a first battery heating mode, the heating the battery cooling circuit by using the electric drive waste heat on the cooling liquid circuit comprises:

triggering the conduction of a first channel and a second channel of a four-way valve on a cooling liquid loop, and the conduction of the second channel of a first three-way water valve and the conduction of the second channel of a second three-way water valve;

and heating the cooling liquid by using the electric drive waste heat generated by the electric drive module on the cooling liquid loop, so that the warmed cooling liquid heats the battery on the battery cooling loop.

4. The method for processing heat and heat storage based on a thermal management system for a vehicle according to claim 2, wherein in the case where the battery heating mode is a second battery heating mode, the heat storage processing is performed by a battery cooler on the refrigerant circuit, and the heat storage processing is performed on the battery cooling circuit by the battery cooler on the coolant circuit, comprising:

the method comprises the steps of respectively triggering a second stop valve, a third stop valve and a fifth stop valve on a refrigerant loop to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, closing an evaporator inlet electronic expansion valve, and conducting a battery cooler inlet electronic expansion valve and an external air cooler outlet electronic expansion valve so that the battery cooler stores heat in the refrigerant loop;

And respectively triggering the conduction of a third channel and the conduction of a fourth channel of the four-way valve on the cooling liquid loop so that the battery cooler heats the battery through the battery cooling loop.

5. The method for processing heat and heat storage based on a thermal management system for a vehicle according to claim 2, wherein in a case where the battery heating mode is a third battery heating mode, the heat storage processing is performed by a battery cooler on the refrigerant circuit, and the heat storage processing is performed on the battery cooling circuit by the battery cooler on the coolant circuit, comprising:

the method comprises the steps of respectively triggering the conduction of a third channel and a fourth channel of a four-way valve on a cooling liquid loop, the conduction of a second channel of a first three-way water valve, the conduction of a first channel of a second three-way water valve and the conduction of a second channel of a third three-way water valve;

heating the cooling liquid by using electric drive waste heat generated by an electric drive module on the cooling liquid loop, so that the warmed cooling liquid is recycled after the heating compressor is sucked in a water-cooling air cooler on the cooling liquid loop;

and respectively triggering a second stop valve, a third stop valve and a fifth stop valve on the refrigerant loop to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, closing the electronic expansion valve at the inlet of the evaporator, and conducting the electronic expansion valve at the inlet of the battery cooler and the electronic expansion valve at the outlet of the external air cooler so as to store heat in the refrigerant loop by the battery cooler and heat the battery by the battery cooling loop.

6. The method for processing heat and stored energy based on a thermal management system for a vehicle according to claim 2, wherein the battery cooling circuit is subjected to a heating process by using electric drive waste heat on the cooling liquid circuit in a fourth battery heating mode; and performing heat storage processing on the refrigerant circuit by a battery cooler, and performing heating processing on the battery cooling circuit by the battery cooler on the cooling liquid circuit, comprising:

the method comprises the steps of respectively triggering the conduction of a first channel and a second channel of a four-way valve on a cooling liquid loop, and enabling the conduction of the second channel of a first three-way water valve and the conduction of the second channel of a second three-way water valve;

heating the cooling liquid by using electric drive waste heat generated by an electric drive module on the cooling liquid loop, so that the warmed cooling liquid heats the battery on the battery cooling loop;

7. The method for processing heat and stored energy based on a thermal management system for a vehicle according to claim 1, wherein when it is determined to heat a passenger compartment in the thermal management system for a vehicle, the heating process is performed on the coolant circuit using the residual heat of electric drive in the matched heating mode; and/or performing heat storage treatment through a battery cooler; and/or performing heating treatment by using a refrigerant circuit; and/or performing a heating process using a battery cooler, comprising:

in a passenger cabin heating mode of heating and matching the passenger cabin, the passenger cabin is heated by a refrigerant loop; and/or heat treating the passenger compartment with a battery cooler.

8. The method for processing heat and stored heat based on a thermal management system for a vehicle according to claim 7, wherein the heating the passenger compartment with the battery cooler in the passenger compartment heating mode being the first passenger compartment heating mode comprises:

the third channel conduction and the fourth channel conduction of the four-way valve on the cooling liquid loop are respectively triggered;

and the second stop valve and the fourth stop valve on the refrigerant loop are respectively triggered to be conducted, the first stop valve, the third stop valve, the fifth stop valve and the sixth stop valve are closed, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve are closed, and the battery cooler inlet electronic expansion valve is conducted, so that heat stored in the battery cooler heats the air sucked by the compressor in the refrigerant loop, and indirectly heats the passenger cabin.

9. The method according to claim 7, wherein when the passenger compartment heating mode is a second passenger compartment heating mode, the passenger compartment is subjected to heating treatment by using a refrigerant circuit; and heating the passenger compartment with a battery cooler, comprising:

the method comprises the steps of respectively triggering a second stop valve, a third stop valve and a fifth stop valve on a refrigerant circuit to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, conducting an electronic expansion valve at an inlet of a battery cooler, an electronic expansion valve at an inlet of an evaporator and an electronic expansion valve at an outlet of an external air cooler, and opening a blower to heat a passenger cabin by using the refrigerant circuit;

the heat stored in the battery cooler is used to heat the compressor suction in the refrigerant circuit to indirectly heat the passenger compartment.

10. The method for processing heat and stored energy in a vehicle thermal management system according to claim 7, wherein when the passenger compartment heating mode is a third passenger compartment heating mode, the heating the passenger compartment using the refrigerant circuit comprises:

and respectively triggering a second stop valve, a third stop valve and a fifth stop valve on the refrigerant circuit to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, closing the electronic expansion valve at the inlet of the battery cooler, conducting the electronic expansion valve at the inlet of the evaporator and the electronic expansion valve at the outlet of the external air cooler, and opening the air blower so as to heat the passenger cabin by using the refrigerant circuit.

11. The method for processing heat and stored energy based on a thermal management system for a vehicle according to claim 1, wherein in determining that both a passenger compartment and a battery in the thermal management system for a vehicle are heated, the heating is performed on the coolant circuit using the residual heat of electric drive in the matched heating mode; and/or performing heat storage treatment through a battery cooler; and/or performing heating treatment by using a refrigerant circuit; and/or performing a heating process using a battery cooler, comprising:

In a hybrid heating mode for performing heating matching on a passenger cabin and a battery in the vehicle thermal management system, performing heating treatment on the passenger cabin by using a refrigerant loop, and performing heating treatment on the battery cooling loop by using a battery cooler on the cooling liquid loop; or, the passenger cabin is heated by a refrigerant loop, and the battery cooling loop is heated by electric drive waste heat on the cooling liquid loop.

12. The method for processing heat and stored heat based on a thermal management system for a vehicle according to claim 11, wherein when determining that the hybrid heating mode is a first hybrid heating mode, the heating the passenger compartment with the refrigerant circuit and the heating the battery cooling circuit with the battery cooler on the coolant circuit, comprises:

the method comprises the steps of respectively triggering a second stop valve, a third stop valve and a fifth stop valve on a refrigerant circuit to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, conducting an electronic expansion valve at an inlet of a battery cooler, an electronic expansion valve at an inlet of an evaporator and an electronic expansion valve at an outlet of an external air cooler, and opening a blower to heat a passenger cabin by using the refrigerant circuit; the battery cooler stores heat in the refrigerant loop;

And triggering the conduction of a third channel and the conduction of a fourth channel of the four-way valve on the cooling liquid loop so that the battery cooler heats the battery through the battery cooling loop.

13. The method for processing heat and stored heat based on a thermal management system for a vehicle according to claim 11, wherein when determining that the hybrid heating mode is a second hybrid heating mode, the heating the passenger compartment with the refrigerant circuit and the heating the battery cooling circuit with the battery cooler on the coolant circuit, comprises:

The battery cooler stores heat in the refrigerant circuit and heats the battery through the battery cooling circuit.

14. The method for processing heat and stored energy based on a thermal management system for a vehicle according to claim 11, wherein when determining that the hybrid heating mode is a third hybrid heating mode, the heating the passenger compartment with the refrigerant circuit and the heating the battery cooling circuit with the electric drive waste heat on the coolant circuit, comprises:

and respectively triggering a second stop valve, a third stop valve and a fifth stop valve on the refrigerant circuit to be conducted, closing the first stop valve, the fourth stop valve and the sixth stop valve, conducting the battery cooler inlet electronic expansion valve, the evaporator inlet electronic expansion valve and the external air cooler outlet electronic expansion valve, and opening the air blower to heat the passenger cabin by using the refrigerant circuit.

15. An electronic control unit, comprising:

a processor, a memory, a communication interface;

the memory is used for storing executable instructions of the processor;

wherein the processor is configured to perform the method of processing heating and heat storage based on the vehicle thermal management system of any one of claims 1 to 14 via execution of the executable instructions.

16. A new energy automobile, characterized by comprising: the electronic control unit of claim 15, and an in-vehicle thermal management system.