CN218400116U - Vehicle thermal management system and vehicle - Google Patents

Abstract

The utility model provides a vehicle heat management system and vehicle, the utility model discloses a vehicle heat management system, including motor heat transfer circuit, waste heat recovery pipeline and control assembly, wherein, motor heat transfer pump and motor through motor heat transfer tube coupling have in the motor heat transfer circuit, and the waste heat recovery pipeline is used for retrieving engine exhaust system's waste heat, is equipped with first heat transfer unit between motor heat transfer circuit and the waste heat recovery pipeline, controller control valve, and can control motor heat transfer circuit respectively, the intercommunication and the disconnection in waste heat recovery pipeline and refrigerant return circuit. The utility model discloses a vehicle thermal management system utilizes the exhaust heat that engine exhaust system produced, can heat the motor, and reducible oil consumption and reduce vehicle use cost still can make the motor work under the suitable temperature, and the performance of full play motor.

Description

Vehicle thermal management system and vehicle

Technical Field

The utility model relates to a vehicle thermal management technical field, in particular to vehicle thermal management system. And simultaneously, the utility model discloses still relate to a vehicle of using this vehicle thermal management system.

Background

The conventional vehicles comprise a pure electric vehicle, a hybrid vehicle and a fuel vehicle, wherein the hybrid vehicle can better meet the use requirements of passengers due to the realization of a motor driving mode, an engine driving mode and an engine and motor hybrid driving mode.

However, since the conventional hybrid vehicle is equipped with the motor and the battery, the reduction of the driving range of the vehicle has always plagued various major host plants in cold weather in winter, and the energy is derived from the battery, so that the energy storage is not much more, and the energy utilization rate of the heating of the battery and the passenger compartment is very important. At present, the development of new energy vehicles and the adoption of new technologies are a solution, but the cost is often high.

The efficient heating of the battery, the waste heat utilization of the motor, the ultra-fast charging of the battery and the application of the heat pump technology, the energy-saving technology and the technology facilitating the customer experience all put forward higher requirements on the comprehensive performance of the heat management integrated architecture, and how to effectively combine the functions needs to be realized through a reasonable heat management architecture.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention is directed to a vehicle thermal management system, which is beneficial to the motor to perform better performance and reduce the vehicle use cost.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a vehicle thermal management system, includes motor heat transfer circuit, waste heat recovery pipeline, refrigerant circuit and control assembly, wherein:

the control assembly comprises a plurality of control valves respectively arranged on the motor heat exchange pipeline, the waste heat recovery pipeline and the refrigerant pipeline, and a controller respectively connected with the control valves;

the controller controls the control valves to respectively control the connection and disconnection of the motor heat exchange loop, the waste heat recovery pipeline and the refrigerant loop;

the waste heat recovery pipeline is used for recovering waste heat of an engine exhaust system;

the refrigerant loop is internally provided with a compressor, a condenser and an evaporator which are connected through refrigerant pipelines;

a first heat exchange unit for exchanging heat between the motor heat exchange loop and the waste heat recovery pipeline is arranged between the motor heat exchange loop and the waste heat recovery pipeline;

and a motor heat exchange branch pipeline is connected in parallel in the motor heat exchange loop, and heat exchange is carried out between the motor heat exchange branch pipeline and the refrigerant loop through a heat exchange control passage arranged in the condenser.

Further, a motor heat exchange pump and a motor which are connected through a motor heat exchange pipeline are arranged in the motor heat exchange loop; the vehicle heat management system also comprises a battery heat exchange loop, wherein the battery heat exchange loop is internally provided with a battery heat exchange pump and a battery which are connected through a battery heat exchange pipeline; the battery heat exchange pipeline is connected in parallel in the motor heat exchange loop through a communication pipeline, and the battery heat exchange pump, the battery, the motor heat exchange pump and the motor are connected in series.

Further, the refrigerant system further comprises a refrigerant branch line, wherein the refrigerant branch line and the evaporator are connected in parallel in the refrigerant circuit; and a second heat exchange unit for exchanging heat between the refrigerant branch pipeline and the battery heat exchange loop is arranged between the refrigerant branch pipeline and the battery heat exchange loop.

The battery heat exchange device further comprises a battery heat dissipation pipeline connected in parallel in the battery heat exchange pipeline, and a battery radiator is connected in the battery heat dissipation pipeline; the battery radiator, the battery heat exchange pump and the battery are connected in series through the battery heat dissipation pipeline and the battery heat exchange pipeline to form a battery heat dissipation loop.

Furthermore, the control valves comprise a second four-way valve arranged in the battery heat exchange loop, two valve ports of the second four-way valve are connected in series in the battery heat exchange pipeline, and the other two valve ports are respectively communicated with the battery heat dissipation pipeline and the communication pipeline.

The motor heat exchange loop is characterized by further comprising a motor heat dissipation pipeline connected in parallel in the motor heat exchange loop, wherein a motor radiator is arranged in the motor heat dissipation pipeline; the motor radiator, the motor heat exchange pump and the motor are connected in series through the motor heat dissipation pipeline and the motor heat exchange pipeline to form a motor heat dissipation loop.

Furthermore, the control valves comprise a first four-way valve, two valve ports of the first four-way valve are connected in series in the heat exchange pipeline of the motor, and the other two valve ports are respectively communicated with the heat dissipation pipeline of the motor and the communication pipeline.

Furthermore, a water overflow tank is arranged in the heat dissipation pipeline of the motor.

Further, a motor controller and a system electric element which are connected through the motor heat exchange pipeline are also arranged in the motor heat exchange loop; the motor heat exchange pipeline comprises a motor main heat exchange pipeline provided with at least one of the motor, the motor controller and the system electric element; the motor heat exchange branch pipeline and the motor main heat exchange pipeline are arranged in parallel.

Compared with the prior art, the utility model discloses following advantage has:

vehicle thermal management system, collect the waste heat recovery pipeline of engine exhaust system exhaust heat through setting up to set up first heat transfer unit between motor heat transfer return circuit and waste heat recovery pipeline, at cold weather in winter, the heat that usable engine exhaust system produced heats the motor, does benefit to and guarantees that the motor works under suitable temperature, oil consumption can be reduced, and reduce vehicle use cost.

In addition, the battery heat exchange pipeline is connected in parallel in the motor heat exchange loop through the communicating pipeline, and the battery can be heated by utilizing heat generated by an engine exhaust system, so that the battery can be ensured to work at a proper temperature, and the motor and the battery can play excellent performances.

In addition, the motor radiator is favorable for radiating heat of electric devices such as a motor and the like, the battery radiator is favorable for radiating heat of the battery, and the refrigerant loop of the air conditioner can also utilize the motor radiator and the battery radiator to radiate heat at the same time, so that the air conditioner has better heat radiation performance.

And set up the branch pipeline of motor heat transfer, the fluid in the heat transfer return circuit of the motor can choose whether to flow through the condenser, and reduce the load of motor heat transfer pump, further do benefit to the energy saving.

And simultaneously, the utility model also provides a vehicle, be equipped with in the vehicle as above vehicle thermal management system.

The utility model discloses a vehicle and aforementioned vehicle thermal management system have the same beneficial effect for prior art, no longer describe herein.

Drawings

The accompanying drawings, which form a part of the present disclosure, are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the present disclosure. In the drawings:

fig. 1 is a schematic block diagram of a vehicle thermal management system according to an embodiment of the present invention.

Description of reference numerals:

1. a heat exchange pipeline of the motor; 101. the motor exchanges heat with the pump; 102. a motor; 103. a system electrical component; 104. a motor controller; 105. a first four-way valve; 106. a motor heat dissipation pipeline; 107. a motor radiator; 108. a water overflow tank; 109. a second tee joint; 110. a motor heat exchange branch pipeline; 111. a sixth tee joint; 112. a seventh tee joint; 113. a second three-way valve;

2. a waste heat recovery pipeline; 201. an engine; 202. a first three-way valve; 203. a first tee joint; 204. a bypass line;

3. a battery heat exchange pipeline; 301. a battery heat exchange pump; 302. a battery; 303. a temperature sensor; 304. a gas-liquid separator; 305. an eighth tee joint; 306. a second four-way valve; 307. a third tee joint; 308. a battery heat dissipation pipeline; 309. a battery heat sink;

4. a refrigerant line; 401. compressor, 402, condenser; 403. an evaporator; 405. a fourth tee joint 406, an integrated electromagnetic expansion valve; 407. a fifth tee joint; 408. a thermostatic expansion valve; 409. a stop valve; 410. a refrigerant branch line;

5. a first heat exchange unit; 6. a second heat exchange unit; 7. and a communication pipeline.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood in combination with the specific situation.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to a vehicle thermal management system, which is beneficial to the motor 102 of a vehicle to exert better performance and reducing the use cost of the vehicle by optimizing a management framework and utilizing the exhaust heat of an exhaust system of an engine 201.

In terms of overall design, an exemplary schematic block diagram of the vehicle thermal management system of the embodiment is shown in fig. 1, and the vehicle thermal management system mainly includes a motor heat exchange loop, a waste heat recovery pipeline 2, a refrigerant loop and a control component; wherein: the motor heat exchange loop is provided with a motor heat exchange pump 101 and a motor 102 which are connected through a motor heat exchange pipeline 1, the waste heat recovery pipeline 2 is used for recovering waste heat of an exhaust system of the engine 201, the refrigerant loop is provided with a compressor 401, a condenser 402 and an evaporator 403 which are connected through a refrigerant pipeline 4, the motor heat exchange loop is connected with a motor heat exchange branch pipeline 110 in parallel, and the motor heat exchange branch pipeline 110 and the refrigerant loop exchange heat through a heat exchange control passage arranged in the condenser 402.

The control assembly comprises a plurality of control valves respectively arranged on the motor heat exchange pipeline 1, the waste heat recovery pipeline 2 and the refrigerant pipeline 4, and controllers respectively connected with the control valves, wherein the controllers control the control valves and can respectively control the connection and disconnection of the motor heat exchange loop, the waste heat recovery pipeline 2 and the refrigerant loop.

The vehicle thermal management system of this embodiment, through set up first heat transfer unit 5 between motor heat transfer circuit and waste heat recovery pipeline 2, do benefit to heat exchange between motor heat transfer circuit and waste heat recovery pipeline 2 the two to at low temperature cold weather, usable engine 201 exhaust system's waste heat heats for motor 102.

In order to better understand the vehicle thermal management system of the embodiment, a waste heat recovery pipeline is described first, as a preferred embodiment, the waste heat recovery pipeline passes through the first heat exchange unit 5, and a first three-way valve 202 and a first three-way valve 203 are arranged on the waste heat recovery pipeline, the first three-way valve 202 and the first three-way valve 203 are respectively arranged at two sides of the first heat exchange unit 5, and a bypass pipeline 204 is communicated between the first three-way valve 202 and the first three-way valve 203, so that whether waste heat of an engine exhaust system is utilized or not can be facilitated. Here, the three-way valve 202 is connected to the controller so as to control the connection and disconnection of the waste heat recovery line 2.

As a preferred embodiment, the motor heat exchange loop further includes a motor controller 104 and a system electrical component 103 connected via a motor heat exchange pipeline 1, the motor heat exchange pipeline 1 includes a motor main heat exchange pipeline provided with at least one of the motor 102, the motor controller 104 and the system electrical component 103, and the motor heat exchange branch pipeline 110 and the motor main heat exchange pipeline are connected in parallel. For example, in this embodiment, the motor main heat exchange pipeline connects the motor 102, the motor controller 104, and the system electrical component 103 in series, the three are all disposed in the motor heat exchange loop, the other end of the motor 102 is connected to the motor heat exchange pump 101 through the sixth tee 111, and the other end of the system electrical component 103 is connected to the first heat exchange unit 5.

In addition, a second tee joint 109, a first four-way valve 105 and a seventh tee joint 112 which are connected in series in sequence are arranged in the motor heat exchange loop, one interface of the seventh tee joint 112 is connected to the first heat exchange unit 5, one interface of the second tee joint 109 is connected to an outlet of the motor heat exchange pump 101, and an inlet of the motor heat exchange pump 101 is connected to the sixth tee joint 111, so that the motor heat exchange loop of the embodiment can be formed.

In a preferred embodiment, the heat exchanger further comprises a motor heat radiation pipeline 106 connected in parallel with the battery heat exchange pipeline 3, a motor radiator 107 and an overflow tank 108 are arranged in the motor heat radiation pipeline 106, one end of the motor heat exchange pipeline 1 is connected with one valve port of the first four-way valve 105, and the other end is connected with a second three-way valve 109. Here, the motor radiator 107, the motor heat exchanging pump 101 and the motor 102 are connected in series through the motor heat radiating pipeline 106 and the motor heat exchanging pipeline 1 to form a motor heat radiating loop. The first four-way valve 105 is a control valve disposed in the heat exchange loop of the motor, two valve ports of which are connected in series in the heat exchange pipeline 1 of the motor, and the other two valve ports are respectively communicated with the heat dissipation pipeline 106 of the motor and the communication pipeline 7. In a preferred embodiment, the vehicle thermal management system further comprises a battery heat exchange loop, and the battery heat exchange loop is provided with a battery heat exchange pump 301 and a battery 302 which are connected through a battery heat exchange pipeline 3. In addition, the battery heat exchange pipeline 3 is connected in parallel in the motor heat exchange loop through a communication pipeline 7, the battery heat exchange pump 301, the battery 302, the motor heat exchange pump 101 and the motor 102 are connected in series, and waste heat of an exhaust system of the engine 201 can be used for heating the battery 302.

In a preferred embodiment, the outlet of the battery heat exchanging pump 301 is connected to the second heat exchanging unit 6, the outlet of the battery heat exchanging pump 301 is connected to the temperature sensor 303, the battery heat exchanging pipeline 3 provided with the battery 302 has one end connected to the second heat exchanging unit 6, the other end is connected to the eighth tee 305, the second four-way valve 304 and the gas-liquid separator 306 in sequence, and the other end of the gas-liquid separator 306 is connected to the inlet of the battery heat exchanging pump 301. In this structure, the second four-way valve 306 is a control valve in the battery heat exchange loop, two valve ports of the second four-way valve are connected in series in the battery heat exchange pipeline 3, and the other two valve ports are respectively communicated with the battery heat dissipation pipeline 308 and the communication pipeline 7. The temperature sensor 303 may be connected to a controller, described below, where the temperature sensor 303 may be used to acquire the water temperature and communicate the water temperature information to the controller.

In a preferred embodiment, the vehicle thermal management system further includes a battery heat dissipation pipeline 308 connected in parallel to the battery heat exchange loop, a battery radiator 309 and a third tee 307 are connected to the battery heat dissipation pipeline 308, one end of the battery heat dissipation pipeline 308 is connected to one valve port of the second four-way valve 304, and the other end of the battery heat dissipation pipeline 308 is connected to one port of the eighth tee 305. With the above arrangement, the battery radiator 309, the battery heat exchanging pump 301 and the battery 302 are connected in series through the battery heat radiating pipeline 308 and the battery heat exchanging pipeline 3 to form a battery heat radiating loop.

As a preferred embodiment, the vehicle thermal management system further comprises a refrigerant circuit having a compressor 401, a condenser 402 and an evaporator 403 connected by a refrigerant line 4. Here, the condenser 402 is an existing condenser, the evaporator 403 is an existing evaporator, and a fan may be provided on one side of the evaporator.

In the preferred embodiment, a fourth three-way 405, a stop valve 409 and a thermostatic expansion valve 408 are sequentially provided on the refrigerant line 4 connecting the condenser 402 to the evaporator 403, and a fifth three-way 407 is provided on the refrigerant line 4 connecting the evaporator 403 to the inlet of the compressor 401.

In a preferred embodiment, the vehicle thermal management system of the present embodiment further includes a refrigerant branch pipe 410, the refrigerant branch pipe 410 and the evaporator 403 are connected in parallel in the refrigerant circuit, and a second heat exchange unit 6 for exchanging heat between the refrigerant branch pipe 410 and the battery heat exchange circuit is provided between the two.

For example, in the present embodiment, the refrigerant branch line 410 passes through the second heat exchange unit 6, and the second heat exchange unit 6 is preferably an existing air-cooled water-cooled machine. An integrated electromagnetic expansion valve 406 is provided on the refrigerant branch pipe 410, and one end of the refrigerant branch pipe 410 is connected to one port of the fourth three-way valve 405, and the other end is communicated with one port of the fifth three-way valve 407.

In a preferred embodiment, the motor heat exchange branch line 110 is connected in parallel to the motor heat exchange line 1, and the motor heat exchange branch line 110 exchanges heat with the refrigerant circuit through the heat exchange control path of the condenser 402. For example, in this embodiment, the motor heat exchange branch line 110 passes through the first heat exchange unit 5, and one end of the motor heat exchange branch line 110 is connected to a valve port of the second three-way valve 113, and the other end is connected to a port of the sixth three-way valve 111.

With the above arrangement, two valve ports of the first four-way valve 105 are connected in series in the motor heat exchange pipeline 1, and the other two valve ports are respectively communicated with the motor heat dissipation pipeline 106 and the communication pipeline 7. Two valve ports of the second four-way valve 304 are connected in series in the battery heat exchange pipeline 3, and the other two valve ports are respectively communicated with the battery heat dissipation pipeline 308 and the communication pipeline 7, so that the battery heat exchange loop can be connected in parallel in the motor heat exchange loop, and further, the residual heat of the exhaust system of the engine 201 can be utilized to heat the motor 102 and the battery 302 at the same time.

The vehicle thermal management system of this embodiment, through setting up the waste heat recovery pipeline 2 of collecting engine 201 exhaust system exhaust heat to set up first heat transfer unit 5 between motor heat transfer circuit and waste heat recovery pipeline 2, in winter cold weather, the heat that usable engine 201 exhaust system produced heats motor 102, does benefit to and guarantees that motor 102 works under suitable temperature, but oil consumption reduction, and reduction vehicle use cost.

In addition, the battery heat exchange pipeline 3 is connected in parallel in the motor heat exchange loop through the communication pipeline 7, and the battery 302 can be heated by using heat generated by the exhaust system of the engine 201, so that the battery 302 can be ensured to work at a proper temperature, and the motor 102 and the battery 302 can exert excellent performance.

In a preferred embodiment, the controller is connected to each of the first three-way valve 202, the first four-way valve 105, and the second four-way valve 306, and is also connected to each of the first temperature sensor, the second temperature sensor, the third temperature sensor, the fourth temperature sensor, and the fifth sensor.

Wherein, a first temperature sensor can be installed at a position close to the electric motor 102 for obtaining the temperature of the electric motor, a second temperature sensor can be installed at a position close to the battery 302 for obtaining the temperature of the battery 302, a third temperature sensor can be installed at the outlet of the electric motor radiator 107 or the inlet of the electric motor 102 in the electric motor heat exchange pipeline 1, a fourth temperature sensor can be installed at the outlet of the battery radiator 309 or the inlet of the battery 302 in the battery heat exchange pipeline 3, and a fifth temperature sensor can be installed at the refrigerant outlet of the condenser 402 in the refrigerant pipeline 4.

Preferably, the controller may be further connected to the motor heat exchanger 101, the battery heat exchanger 301, and the compressor 401, and the temperature information obtained by each temperature sensor may be transmitted to the controller, so that the controller controls the operation of each control valve, the motor heat exchanger 101, the battery heat exchanger 301, and the compressor 401 according to the obtained temperature information, thereby implementing the following application scenarios.

The vehicle thermal management system of the embodiment can be applied to the following scenes:

scene one: when the vehicle is driven at an ultralow temperature in winter, the battery 302 and the motor 102 are heated, and pure electricity is realized;

A. when the vehicle engine 201 is started, the three-way valve 202 is opened in the direction a → b by means of proportional adjustment to introduce the exhaust gas into the first heat exchange unit 5, the second three-way valve 113b → a is opened, the direction c is not passed (water is not allowed to pass through the condenser, the energy consumption of the motor heat exchange pump 101 can be reduced, and heat dissipation into the environment can be prevented), the motor heat exchange pump 101 operates, the first four-way valve 105 is opened in the direction c → d, at this time, the motor heat exchange pump 101 in the motor heat exchange loop operates water flow, then the water in the whole loop is heated by the first heat exchange unit 5, electrical components such as the motor 102 and the like can be rapidly made to be at the optimal working temperature, and the vehicle can rapidly achieve the optimal dynamic performance.

B. When the vehicle carries out energy recovery at this moment, or when needing pure electric driving, if the temperature of battery 302 is lower, will influence the efficiency of recovered energy and the discharge capacity of battery 302, lead to the vehicle to retrieve the energy and diminish or the whole car dynamic is poor, need heat for battery 302 this moment, first cross valve 105 realizes c → a logical, second cross valve 306 realizes c → d logical, a and b mouth keep closing, battery heat transfer pump 301 operation, pump hot water into battery 302, heat for battery 302, later flow to motor heat transfer circuit through third tee bend 307, later pass through first heat exchange unit 5 once more, can heat battery 302, do benefit to whole car energy recovery and whole car pure electric driving, do benefit to and reduce whole car energy consumption.

C. When the engine 201 is not started, the battery 302 can recover waste heat of the motor 102 or the motor 102 actively generates heat to heat the battery 302 through the operation of the loop B, so that the purposes of saving energy, improving endurance and rapidly raising temperature of the battery 302 are achieved, for example, when the battery 302 is rapidly charged, the battery 302 needs to be rapidly heated in winter, and the loop formed by connecting the motor 102 and the battery 302 can eliminate a PTC heater in a battery heat exchange loop, so that the cost of the whole vehicle can be reduced.

Scene two: the battery 302, motor 102, and passenger compartment require cooling

D. When the battery 302 needs to be cooled, and when the ambient temperature is low or appropriate, the battery heat exchange loop can use the battery radiator 309 to dissipate heat, at this time, the second four-way valve 306 keeps d → b open, the ports a and c are not open, the battery heat exchange pump 301 operates, the battery 302 is cooled through the battery radiator 309 (compared with air-conditioning cooling and energy saving), if the battery radiator 309 cannot meet the requirement of cooling the battery 302, the second four-way valve 306 keeps d → a open, the ports b and c are not open, the battery heat exchange pump 301 operates, and the battery 302 is cooled through the second heat exchange unit 6.

E. When the heat preservation or the temperature equalization of the battery heat exchange loop is needed, the second four-way valve 306 keeps the d → a normally open, the ports b and c are not open, and the battery heat exchange pump 301 operates.

F. When the degree of cooling of the motor heat exchange circuit is not so strong (when the motor 102 needs to dissipate heat, and the air conditioner is turned off), the first four-way valve 105 keeps d → b open, and the ports a and c are not open, the second three-way valve 113b → a open, the motor heat exchange pump 101 operates (if the engine 201 is operated at this time, the first three-way valve 202 on the exhaust pipe of the engine 201 keeps a → c open, and the direction of b is not open), water is pumped into the components of the motor 102 and the like which need to be cooled, and then the temperature is reduced by the motor radiator 107, if the motor radiator 107 cannot meet the temperature reduction of the motor 102 and the temperature reduction of the water-cooled condenser (the air conditioner is open, the second three-way valve 113b → a and b → c open), the first four-way valve 105 keeps b open, and the ports a and d are not open, water enters b through c and then passes through the battery radiator 309 after the motor heat exchange pump 101 pumps the motor radiator 107 into the motor radiator 107, enters the battery heat exchange circuit through the first four-way valve 105, the c → b open, and the ports a no-d open, and the heat radiator can be simultaneously, and the heat dissipation cost of the motor radiator can be reduced, and the heat radiator can be sufficiently reduced by the weight of the motor radiator 102.

G. If the heat exchange loop of the motor needs heat preservation, the first four-way valve 105 keeps the communication between c → d, and the ports a and b are not communicated; the energy of a heat exchange loop of the motor is not dissipated;

scene three: when the air conditioner needs to cool

H. Only when the air conditioner is opened, the b → c direction of the second three-way valve 113 is opened;

I. when the air conditioning load is not large, the heat of the air conditioning loop needs to be transferred to the motor heat exchange loop through the condenser 402, then the motor radiator 107 cools down, and the refrigeration of the air conditioning loop is realized, and the specific realization loop is the step, the first four-way valve 105 keeps the d → b pass, the a and c ports are not passed, the motor heat exchange pump 101 runs (if the engine 201 works at the moment, the first three-way valve 202 in the waste heat recovery pipeline 2 keeps the a → c pass, and the b direction is not passed), water is pumped into the components needing cooling, such as the motor 102 and the water-cooled condenser, and then the temperature is reduced through the motor radiator 107.

J. When the air-conditioning load is large, the first four-way valve 105 keeps b → a is open, c and d are closed, the motor heat exchange pump 101 pumps water into the motor radiator 107, then the water is pumped into the battery heat exchange loop through the first four-way valve 105, the second four-way valve 306 in the battery heat exchange loop keeps c → b is open, the openings a and d are closed, the water enters b through c, then the water passes through the battery radiator 309, and the two radiators are enabled to simultaneously radiate heat of the motor heat exchange loop and the water-cooled condenser, so that the large load requirement of the air-conditioning loop is met.

Finally, it should be added that, in the embodiment, the three-way valve and the four-way valve both preferably adopt solenoid valves.

The vehicle thermal management system of the embodiment has the following advantages:

A. when the vehicle engine is started, the waste heat of an exhaust system of the engine can be utilized to heat the motor 102 and the battery 302, so that the pure electric mode can be used all the time, the degree that the pure electric mode can be used as long as the engine 201 can be started is achieved, meanwhile, the waste heat of the engine 201 is used for heating all parts needing to be heated, energy needed by heating parts in winter can be greatly saved, and the pure electric endurance mileage of the vehicle at low temperature or low temperature is effectively improved.

B. When the battery 302 needs to be heated, the battery 302 can be selectively heated by using waste heat of the motor 102 or waste gas of the engine 201, when the battery 302 needs to be cooled, the battery radiator 309 can be selectively used for cooling, and the second heat exchange unit 6 can also be used for cooling, so that diversified heating and cooling heat management requirements of the battery 302 can be met, the performance of the battery 302 is ensured to be optimal for a long time, and the diversified heat management mode can meet the requirement of low energy consumption of battery heat management.

C. When the motor 102 needs a large heat dissipation capacity, the motor 102 can simultaneously use the motor radiator 107 and the battery radiator 309 to simultaneously cool down, so that the two radiators are fully utilized to dissipate heat under extreme conditions, and compared with the motor 102 which is independently matched with a radiator with a large capacity, the weight of the whole vehicle, the arrangement space and the cost can be saved.

D. When the air conditioner has smaller capacity, the air conditioning system can selectively use the independent motor radiator 107 to cool the condenser 402 so as to achieve the purpose of cooling; when the vehicle is charged quickly, the battery 302 needs a large cooling capacity, and at the moment, the air conditioning system can select the combination of the motor radiator 107 and the battery radiator 309 to cool the condenser 402, so that the cost of independently matching the radiators can be saved, and the arrangement space occupied by the independently matching the radiators can be reduced.

E. The functions are more, and the integrated level is higher, to whole car, can reduce spare part cost, reduces and arranges the space, reduces whole car cost and weight.

Finally, the embodiment also relates to a vehicle, and the vehicle is provided with the vehicle thermal management system. The vehicle of the embodiment and the vehicle thermal management system have the same beneficial effects compared with the prior art, and are not described herein again.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A vehicle thermal management system, characterized by:

the device comprises a motor heat exchange loop, a waste heat recovery pipeline (2), a refrigerant loop and a control assembly;

the control assembly comprises a plurality of control valves respectively arranged on the motor heat exchange loop, the waste heat recovery pipeline (2) and the refrigerant loop, and a controller (8) respectively connected with the control valves;

the controller (8) controls the control valves and respectively controls the connection or disconnection of the motor heat exchange loop, the waste heat recovery pipeline (2) and the refrigerant loop;

the waste heat recovery pipeline (2) is used for recovering waste heat of an exhaust system of the engine (201);

the refrigerant circuit is provided with a compressor (401), a condenser (402) and an evaporator (403) which are connected through a refrigerant pipeline (4);

a first heat exchange unit (5) for exchanging heat between the motor heat exchange loop and the waste heat recovery pipeline (2) is arranged between the motor heat exchange loop and the waste heat recovery pipeline;

and a motor heat exchange branch pipeline (110) is connected in parallel in the motor heat exchange loop, and heat exchange is carried out between the motor heat exchange branch pipeline (110) and the refrigerant loop through a heat exchange control passage arranged in the condenser (402).

2. The vehicle thermal management system of claim 1, wherein:

the motor heat exchange loop is internally provided with a motor heat exchange pump (101) and a motor (102) which are connected through a motor heat exchange pipeline (1);

the vehicle thermal management system further comprises a battery heat exchange loop, wherein a battery heat exchange pump (301) and a battery (302) which are connected through a battery heat exchange pipeline (3) are arranged in the battery heat exchange loop;

the battery heat exchange pipeline (3) is connected in parallel in the motor heat exchange loop through a communication pipeline (7), and the battery heat exchange pump (301), the battery (302), the motor heat exchange pump (101) and the motor (102) are connected in series.

3. The vehicle thermal management system of claim 2, wherein:

further comprising a refrigerant branch line (410), the refrigerant branch line (410) and the evaporator (403) being connected in parallel in the refrigerant circuit;

and a second heat exchange unit (6) for exchanging heat between the refrigerant branch pipeline (410) and the battery heat exchange loop is arranged between the refrigerant branch pipeline and the battery heat exchange loop.

4. The vehicle thermal management system of claim 2, wherein:

the heat exchanger also comprises a battery heat dissipation pipeline (308) connected in parallel in the battery heat exchange pipeline (3), and a battery radiator (309) is connected in the battery heat dissipation pipeline (308);

the battery radiator (309), the battery heat exchange pump (301) and the battery (302) are connected in series through the battery heat dissipation pipeline (308) and the battery heat exchange pipeline (3) to form a battery heat dissipation loop.

5. The vehicle thermal management system of claim 4, wherein:

the control valves comprise a second four-way valve (306) arranged in the battery heat exchange loop, two valve ports of the second four-way valve (306) are connected in series in the battery heat exchange pipeline (3), and the other two valve ports are respectively communicated with the battery heat dissipation pipeline (308) and the communication pipeline (7).

6. The vehicle thermal management system of claim 2, wherein:

the motor heat-exchange loop is characterized by also comprising a motor heat-dissipation pipeline (106) connected in parallel in the motor heat-exchange loop, wherein a motor radiator (107) is arranged in the motor heat-dissipation pipeline (106);

the motor radiator (107), the motor heat exchange pump (101) and the motor (102) are connected in series through the motor heat dissipation pipeline (106) and the motor heat exchange pipeline (1) to form a motor heat dissipation loop.

7. The vehicle thermal management system of claim 6, wherein:

the control valves comprise a first four-way valve (105), two valve ports of the first four-way valve (105) are connected in series in the motor heat exchange pipeline (1), and the other two valve ports are respectively communicated with the motor heat dissipation pipeline (106) and the communication pipeline (7).

8. The vehicle thermal management system of claim 6, wherein:

and a water overflow tank (108) is arranged in the motor heat dissipation pipeline (106).

9. The vehicle thermal management system of any of claims 2-8, wherein:

the motor heat exchange loop is also internally provided with a motor controller (104) and a system electrical element (103) which are connected through the motor heat exchange pipeline (1);

the motor heat exchange pipeline (1) comprises a motor main heat exchange pipeline provided with at least one of the motor (102), the motor controller (104) and the system electrical element (103);

the motor heat exchange branch pipeline (110) and the motor main heat exchange pipeline are arranged in parallel.

10. A vehicle, characterized in that:

a vehicle thermal management system according to any one of claims 1 to 9 is provided in the vehicle.

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