CN220429811U

CN220429811U - Thermal management system and vehicle

Info

Publication number: CN220429811U
Application number: CN202322174624.2U
Authority: CN
Inventors: 王博; 马国龙; 梁宏斌
Original assignee: Jidu Technology Wuhan Co ltd
Current assignee: Jidu Technology Wuhan Co ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2024-02-02
Anticipated expiration: 2033-08-11

Abstract

The application discloses a thermal management system and a vehicle. The heat management system comprises a motor, an all-in-one controller, a bypass pipeline and a multi-way valve, wherein the motor is connected with the all-in-one controller through a pipeline; the first end of the bypass pipeline is connected between the motor and the all-in-one controller, and the second end of the bypass pipeline is connected to one side of the motor far away from the all-in-one controller; the multi-way valve is arranged at the second end of the bypass pipeline; the heat management system also comprises a first water pump, a water-cooled condenser and a power battery; the thermal management system has a first mode in which the multi-way valve has a first state and a second state; under the condition that the multi-way valve is in a first state, cooling liquid flows through the all-in-one controller from the first water pump, then passes through the bypass pipeline and then sequentially enters the water-cooled condenser and the power battery; under the condition that the multi-way valve is in the second state, at least part of cooling liquid flows through the all-in-one controller and the motor from the first water pump and then sequentially enters the water-cooled condenser and the power battery.

Description

Thermal management system and vehicle

Technical Field

The present application relates to the field of automotive technology, and more particularly, to a thermal management system and a vehicle.

Background

With the improvement of the living standard of people, automobiles are taken into thousands of families and become living necessities of people. In recent years, new energy automobiles are increasingly favored by consumers due to their energy-saving and environment-friendly properties. The heat management technology is one of the core technologies of new energy automobiles, and functions to keep components such as a driving motor, a power battery and the like in a proper temperature range under all working conditions.

However, in the prior art, because the all-in-one controller is integrated with the motor in series, the heat dissipation of the all-in-one controller is larger in water flow demand, so that the motor cannot effectively store heat according to working conditions. The motor cannot store heat rapidly and keep a certain temperature to work in an optimal interval, and the efficiency of the motor cannot reach the optimal value.

In view of the foregoing, a new solution is needed to solve the above-mentioned problems.

Disclosure of Invention

It is an object of the present application to provide a new solution for a thermal management system and a vehicle.

According to a first aspect of the present application, there is provided a thermal management system comprising:

the motor is connected with the all-in-one controller through a pipeline;

the first end of the bypass pipeline is connected between the motor and the all-in-one controller, and the second end of the bypass pipeline is connected to one side, far away from the all-in-one controller, of the motor;

the multi-way valve is arranged at the second end of the bypass pipeline;

the thermal management system further comprises a first water pump, a water-cooled condenser and a power battery; the thermal management system has a first mode in which the multi-way valve has a first state and a second state;

under the condition that the multi-way valve is in a first state, cooling liquid flows through the all-in-one controller from the first water pump, passes through the bypass pipeline and then sequentially enters the water-cooled condenser and the power battery;

and under the condition that the multi-way valve is in a second state, at least part of cooling liquid flows through the all-in-one controller and the motor from the first water pump and then sequentially enters the water-cooled condenser and the power battery.

Optionally, under the condition that the multi-way valve is in the second state, cooling liquid flows through the all-in-one controller and the motor from the first water pump and then sequentially enters the water-cooled condenser and the power battery; or,

and part of cooling liquid flows through the all-in-one controller from the first water pump, passes through the bypass pipeline, then sequentially enters the water-cooled condenser and the power battery, and the other part of cooling liquid flows through the all-in-one controller from the first water pump and the motor, and then sequentially enters the water-cooled condenser and the power battery.

Optionally, the motor has a reference temperature threshold, and the multi-way valve is in the first state when the temperature of the motor is lower than the reference temperature threshold; the multi-way valve is in a second state when the temperature of the motor is equal to or higher than a reference temperature threshold.

Optionally, the thermal management system further comprises a cooler, a low-temperature radiator and a second water pump; in the first mode, the cooler, the low temperature radiator, and the second water pump are connected in series.

Optionally, the thermal management system further comprises a cooler, a low-temperature radiator and a second water pump; the thermal management system has a second mode in which the multi-way valve has a third state and a fourth state;

under the condition that the multi-way valve is in a third state, cooling liquid flows through the all-in-one controller from the first water pump, passes through the bypass pipeline and then sequentially enters the water-cooled condenser and the low-temperature radiator;

and under the condition that the multi-way valve is in a fourth state, at least part of cooling liquid flows through the all-in-one controller and the motor from the first water pump and then sequentially enters the water-cooled condenser and the low-temperature radiator.

Optionally, under the condition that the multi-way valve is in a fourth state, cooling liquid flows through the all-in-one controller and the motor from the first water pump and then sequentially enters the water-cooled condenser and the low-temperature radiator; or,

and part of cooling liquid flows through the all-in-one controller from the first water pump, passes through the bypass pipeline, then sequentially enters the water-cooled condenser and the low-temperature radiator, and the other part of cooling liquid flows through the all-in-one controller from the first water pump and the motor, and then sequentially enters the water-cooled condenser and the low-temperature radiator.

Optionally, in the second mode, the cooler, the power battery, and the second water pump are connected in series.

Optionally, the multi-way valve is provided with a first valve port, a second valve port and a third valve port, the first valve port is connected with the second end of the bypass pipeline, the second valve port is connected with the motor through a pipeline, and the third valve port is connected with the water-cooled condenser through a pipeline.

According to a second aspect of the present application there is provided a vehicle comprising a thermal management system as described in the first aspect.

Optionally, the vehicle has a first driving state and a second driving state, and the driving mileage of the first driving state is smaller than the driving mileage of the second driving state;

in the first driving state, the multi-way valve is in a first state;

in the second driving state, the multi-way valve is in a second state.

The technical scheme that this application adopted can reach following beneficial effect:

in the thermal management system provided by the embodiment of the application, the multi-way valve can be flexibly adjusted according to the actual working condition requirement, so that the cooling liquid only dissipates heat for the cooling liquid through the all-in-one controller, and the cooling liquid does not pass through the motor, thereby ensuring the heat storage requirement of the motor. When the motor has heat dissipation requirement, the cooling liquid can pass through the multi-way valve and the motor as well as the all-in-one controller.

Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the present application, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.

FIG. 1 is a schematic structural diagram of a thermal management system according to one embodiment of the present application;

FIG. 2 is a schematic diagram of the operation of a thermal management system in a first mode according to one embodiment of the present application;

FIG. 3 is a schematic diagram of the operation of the thermal management system in a second mode according to one embodiment of the present application.

Reference numerals illustrate:

1. a thermal management system; 100. a motor; 101. an all-in-one controller; 102. a bypass conduit; 103. a multi-way valve; 104. a first water pump; 105. a water-cooled condenser; 106. a power battery; 107. a cooler; 108. a low temperature heat sink; 109. and a second water pump.

Detailed Description

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Referring to FIG. 1, according to one embodiment of the present application, a thermal management system is provided. The thermal management system 1 comprises a motor 100, an all-in-one controller 101, a bypass pipeline 102 and a multi-way valve 103, wherein the motor 100 is connected with the all-in-one controller 101 through a pipeline; a first end of the bypass pipe 102 is connected between the motor 100 and the all-in-one controller 101, and a second end of the bypass pipe 102 is connected to a side of the motor 100 away from the all-in-one controller 101; the multi-way valve 103 is disposed at a second end of the bypass conduit 102;

the thermal management system further comprises a first water pump 104, a water-cooled condenser 105 and a power battery 106; the thermal management system has a first mode in which the multi-way valve 103 has a first state and a second state;

in the case that the multi-way valve 103 is in the first state, the cooling liquid flows from the first water pump 104 through the all-in-one controller 101, then through the bypass pipe 102, and then sequentially enters the water-cooled condenser 105 and the power battery 106;

with the multi-way valve 103 in the second state, at least a portion of the coolant flows from the first water pump 104 through the all-in-one controller 101 and the motor 100, and then sequentially enters the water-cooled condenser 105 and the power battery 106.

In the thermal management system provided in the embodiment of the present application, the heat productivity of the all-in-one controller 101 is large, and the cooling liquid is always required to flow through the controller to cool the controller; that is, the coolant needs to flow through the all-in-one controller 101 during substantially all conditions.

However, in most operating conditions, the motor 100 is not required to have coolant flowing therethrough, as the motor 100 needs to be rapidly heat-stored to achieve optimal operating efficiency. For example, in most cases, the operating efficiency of the motor increases significantly with an increase in temperature, with an operating temperature of 40 ℃ being significantly higher than an operating temperature of 10 ℃.

Therefore, in the thermal management system provided in the embodiment of the present application, when the motor is required to store heat quickly to improve the working efficiency, the multi-way valve 103 is adjusted to the first state, and after the cooling liquid comes out of the first water pump 104 and flows through the all-in-one controller 101, the cooling liquid can bypass the motor 100 and pass through the bypass pipeline 102 to enter the water-cooled condenser 105 and the power battery 106 in sequence.

When the motor 100 also needs to flow the cooling liquid to cool down, the multi-way valve 103 is adjusted to the second state, at least part of the cooling liquid flows out of the first water pump 104 and flows through the all-in-one controller 101, and then flows through the motor 100 and sequentially enters the water-cooled condenser 105 and the power battery 106.

In summary, in the thermal management system provided in the embodiment of the present application, the multi-way valve 103 can be flexibly adjusted according to the actual working condition requirement, so that the cooling liquid only passes through the all-in-one controller 101 to dissipate heat for the cooling liquid, and does not pass through the motor 100, thereby ensuring the heat storage requirement of the motor 100. When the motor 100 has a heat dissipation requirement, the cooling liquid can also pass through the all-in-one controller 101 and the motor 100 by adjusting the multi-way valve 103.

Referring to fig. 1, in one embodiment, with the multi-way valve 103 in the second state, the coolant flows from the first water pump 104 through the all-in-one controller 101 and the motor 100, and then sequentially enters the water-cooled condenser 105 and the power battery 106; or,

part of the cooling liquid flows through the all-in-one controller 101 from the first water pump 104, then passes through the bypass pipeline 102, then sequentially enters the water-cooled condenser 105 and the power battery 106, and the other part of the cooling liquid flows through the all-in-one controller 101 and the motor 100 from the first water pump 104, then sequentially enters the water-cooled condenser 105 and the power battery 106.

In this specific example, when the multi-way valve 103 is in the second state, the amount of the cooling liquid flowing through the motor 100 may be the same as the amount of the cooling liquid flowing through the all-in-one controller 101 according to the working condition requirement of the motor 100; alternatively, after the coolant flows through the all-in-one controller 101, only a portion of the coolant flows through the motor 100, while another portion of the coolant flows through the bypass line 102.

In one embodiment, the motor 100 has a reference temperature threshold, and the multi-way valve 103 is in the first state when the temperature of the motor 100 is below the reference temperature threshold; the multi-way valve 103 is in the second state when the temperature of the motor 100 is equal to or higher than a reference temperature threshold.

In this specific example, the temperature of the motor 100 may be monitored by the temperature sensor, and when the temperature of the motor 100 is lower than the reference temperature threshold and the motor 100 needs to store heat, the multi-way valve 103 is in the first state, and the coolant does not pass through the motor 100.

When the temperature of the motor 100 is equal to or higher than the reference temperature threshold and the motor 100 needs to radiate heat for cooling, the multi-way valve 103 is in the second state, and the cooling liquid flows through the motor 100.

The all-in-one controller 101 includes a motor controller, a DCAC inverter, a DCDC inverter, and a high voltage distribution box electrically connected to each other. And the motor controller, the DCAC frequency converter and the DCDC frequency converter are internally provided with temperature sensors which are in communication connection with a controller of the thermal management system.

Referring to fig. 1 and 2, in one embodiment, the thermal management system further includes a cooler 107, a low temperature radiator 108, and a second water pump 109; in the first mode, the cooler 107, the low temperature radiator 108, and the second water pump 109 are connected in series.

Specifically, the first mode is a low-temperature heat pump mode (winter mode, for example, the ambient temperature is lower than 10 ℃), in which the circuit in which the power battery 106 is located and the circuit in which the motor 100 is located are connected in series (solid line circuit in fig. 2). The temperature of the power battery 106 is low, the heat capacity is large, the water temperature of the cooling liquid in the whole loop is pulled to be low, and the cooling liquid bypasses the motor 100, so that the rapid heat accumulation of the motor 100 is realized; and when the temperature of the motor 100 exceeds the reference temperature threshold value, the multi-way valve 103 is adjusted to slowly increase the water flow of the cooling liquid flowing through the motor 100, so that the temperature of the motor 100 is ensured not to exceed the required value.

Further, in the low temperature heat pump mode, the circuit shown by the dotted line in fig. 2 represents that the low temperature radiator 108 absorbs heat in the environment and then transfers the heat discharge to the passenger compartment of the vehicle through the cooler 107 to meet the heating demand of the passenger compartment.

Referring to fig. 1 and 3, in one embodiment, the thermal management system further includes a cooler 107, a low temperature radiator 108, and a second water pump 109; the thermal management system has a second mode in which the multi-way valve 103 has a third state and a fourth state;

in the case that the multi-way valve 103 is in the third state, the cooling liquid flows from the first water pump 104 through the all-in-one controller 101, then through the bypass pipe 102, and then sequentially enters the water-cooled condenser 105 and the low-temperature radiator 108;

with the multi-way valve 103 in the fourth state, at least a portion of the coolant flows from the first water pump 104 through the all-in-one controller 101 and the motor 100, and then sequentially enters the water-cooled condenser 105 and the low-temperature radiator 108.

Specifically, the second mode is a high temperature cooling mode (summer mode, e.g., ambient temperature higher than 30 ℃), in which the motor 100 is connected in series with the low temperature radiator 108, referring to the solid line circuit in fig. 3; likewise, coolant is controlled to flow through the motor 100 or not through the motor 100 by adjusting the multi-way valve 103 to ensure that the temperature of the motor 100 is in an optimal interval of operating efficiency.

Referring to fig. 3, in one embodiment, in a case where the multi-way valve 103 is in the fourth state, the cooling liquid flows from the first water pump 104 through the all-in-one controller 101 and the motor 100, and then sequentially enters the water-cooled condenser 105 and the low temperature radiator 108; or,

part of the cooling liquid flows through the all-in-one controller 101 from the first water pump 104, then passes through the bypass pipeline 102, then sequentially enters the water-cooled condenser 105 and the low-temperature radiator 108, and the other part of the cooling liquid flows through the all-in-one controller 101 and the motor 100 from the first water pump 104, then sequentially enters the water-cooled condenser 105 and the low-temperature radiator 108.

In this specific example, when the multi-way valve 103 is in the fourth state, the amount of the cooling liquid flowing through the motor 100 may be the same as the amount of the cooling liquid flowing through the all-in-one controller 101 according to the working condition requirement of the motor 100; alternatively, after the coolant flows through the all-in-one controller 101, only a portion of the coolant flows through the motor 100, while another portion of the coolant flows through the bypass line 102.

Referring to fig. 3, in one embodiment, in the second mode, the cooler 107, the power battery 106, and the second water pump 109 are connected in series.

In this specific example, in the high-temperature cooling mode, referring to the circuit shown by the broken line in fig. 3, the power battery 106 is cooled down by the cooler 107 through the circuit shown by the broken line in fig. 3.

Referring to fig. 1, in one embodiment, the multi-way valve 103 has a first valve port connected to the second end of the bypass pipe 102, a second valve port connected to the motor 100 through a pipe, and a third valve port connected to the water-cooled condenser 105 through a pipe.

In this particular example, the multi-way valve 103 is a three-way proportional valve; by adjusting the three-way proportional valve, the coolant can be controlled to flow through the motor 100 or not flow through the motor 100; and can also adjust the proportion of coolant flowing through motor 100 under the condition that coolant flows through motor 100 to better satisfy the demand of actual operating mode.

According to another embodiment of the present application, a vehicle is provided, which comprises a thermal management system 1 as described above.

In one embodiment, the vehicle has a first driving state and a second driving state, the first driving state having a driving range that is less than the driving range of the second driving state;

in the first driving state, the multi-way valve 103 is in a first state;

in the second driving state, the multi-way valve 103 is in a second state.

In this specific example, the first driving state is short-distance driving, and when the estimated driving range is smaller than the driving range threshold value, the first driving state is determined; because the heat capacity of the power battery 106 is large and the temperature rise is slow, the temperature rise of the power battery 106 is very limited under the condition of short distance driving, and the contribution of the temperature rise of the power battery 106 to the endurance mileage is far smaller than the contribution of the efficient operation of the motor 100 to the endurance mileage; therefore, the multi-way valve 103 is adjusted to the first state, i.e. the cooling fluid does not pass through the motor 100, so as to ensure that the motor 100 stores heat rapidly to achieve the optimal working efficiency.

The second driving state is long-distance driving, for example, when the estimated driving mileage is greater than the driving mileage threshold value, the second driving state is judged; at this time, the multi-way valve 103 is adjusted to a second state, that is, the cooling liquid passes through the motor 100, so that heat of the motor 100 is transferred to the power battery 106, and the power battery 106 is heated by using the waste heat of the motor 100; for long distance driving, the temperature of the power battery 106 is increased, the discharge amount of the power battery 106 is increased, and meanwhile, the temperature of the motor is maintained in a proper range, so that the comprehensive benefit of the endurance mileage is optimized.

In addition, in the low temperature heat pump mode (winter mode, for example, the ambient temperature is lower than 10 ℃), the vehicle is started, the thermal management system enters the control judgment stage, and when the air conditioner of the vehicle is turned on, the water path mode is that the power battery 106 is connected in series with the motor 100, and at this time, the opening degree of the control multi-way valve 103 is 0%, and the flow rate of the cooling liquid passing through the motor 100 is 0, so that the motor 100 rapidly stores heat, and the operating temperature of the motor 100 rapidly increases to the optimal section. When the temperature of the motor 100 exceeds a set threshold, the multi-way valve 103 is opened to perform PID adjustment, and the temperature of the motor 100 is controlled to be within an optimal efficiency range.

In the high-temperature cooling mode (summer mode, for example, the ambient temperature is higher than 30 ℃), the water path mode is that the motor 100 is connected in series with the low-temperature radiator 108, at this time, the opening degree of the multi-way valve 103 is controlled to be 0%, and the flow rate of the cooling liquid passing through the motor 100 is controlled to be 0, so that the motor 100 rapidly stores heat, and the operating temperature of the motor 100 rapidly increases to an optimal interval. When the temperature of the motor 100 exceeds a set threshold, the multi-way valve 103 is opened to perform PID adjustment, the temperature of the motor 100 is controlled in an optimal efficiency range, and at this time, the excessive heat of the motor 100 is dissipated through the low-temperature radiator 108.

The foregoing embodiments mainly describe differences between the embodiments, and as long as there is no contradiction between different optimization features of the embodiments, the embodiments may be combined to form a better embodiment, and in consideration of brevity of line text, no further description is given here.

Although specific embodiments of the present application have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the present application. The scope of the application is defined by the appended claims.

Claims

1. A thermal management system, comprising:

the system comprises a motor (100) and an all-in-one controller (101), wherein the motor (100) is connected with the all-in-one controller (101) through a pipeline;

a bypass pipe (102), a first end of the bypass pipe (102) is connected between the motor (100) and the all-in-one controller (101), and a second end of the bypass pipe (102) is connected to one side of the motor (100) away from the all-in-one controller (101);

-a multi-way valve (103), the multi-way valve (103) being arranged at a second end of the bypass conduit (102);

the thermal management system further comprises a first water pump (104), a water-cooled condenser (105) and a power battery (106); the thermal management system has a first mode in which the multi-way valve (103) has a first state and a second state;

under the condition that the multi-way valve (103) is in a first state, cooling liquid flows through the all-in-one controller (101) from the first water pump (104), passes through the bypass pipeline (102) and then sequentially enters the water-cooled condenser (105) and the power battery (106);

at least part of the cooling liquid flows from the first water pump (104) through the all-in-one controller (101) and the motor (100) and then sequentially enters the water-cooled condenser (105) and the power battery (106) under the condition that the multi-way valve (103) is in a second state.

2. The thermal management system of claim 1, wherein with the multi-way valve (103) in the second state, coolant flows from the first water pump (104) through the all-in-one controller (101) and the electric machine (100) and then sequentially into the water-cooled condenser (105) and the power battery (106); or,

part of cooling liquid flows through the all-in-one controller (101) from the first water pump (104), passes through the bypass pipeline (102), then sequentially enters the water-cooling condenser (105) and the power battery (106), and the other part of cooling liquid flows through the all-in-one controller (101) and the motor (100) from the first water pump (104), and then sequentially enters the water-cooling condenser (105) and the power battery (106).

3. The thermal management system according to claim 1, wherein the electric machine (100) has a reference temperature threshold, the multi-way valve (103) being in a first state when the temperature of the electric machine (100) is below the reference temperature threshold; the multi-way valve (103) is in a second state when the temperature of the motor (100) is equal to or higher than a reference temperature threshold.

4. The thermal management system of claim 1, further comprising a cooler (107), a low temperature radiator (108), and a second water pump (109); in the first mode, the cooler (107), the low temperature radiator (108) and the second water pump (109) are connected in series.

5. The thermal management system of claim 1, further comprising a cooler (107), a low temperature radiator (108), and a second water pump (109); the thermal management system has a second mode in which the multi-way valve (103) has a third state and a fourth state;

under the condition that the multi-way valve (103) is in a third state, cooling liquid flows through the all-in-one controller (101) from the first water pump (104), passes through the bypass pipeline (102) and then sequentially enters the water-cooled condenser (105) and the low-temperature radiator (108);

at least part of the cooling liquid flows from the first water pump (104) through the all-in-one controller (101) and the motor (100) and then sequentially enters the water-cooled condenser (105) and the low-temperature radiator (108) under the condition that the multi-way valve (103) is in a fourth state.

6. The thermal management system of claim 5, wherein with the multi-way valve (103) in a fourth state, coolant flows from the first water pump (104) through the all-in-one controller (101) and the electric motor (100) and then sequentially into the water-cooled condenser (105) and the low-temperature radiator (108); or,

part of cooling liquid flows through the all-in-one controller (101) from the first water pump (104), passes through the bypass pipeline (102), then sequentially enters the water-cooled condenser (105) and the low-temperature radiator (108), and the other part of cooling liquid flows through the all-in-one controller (101) and the motor (100) from the first water pump (104), and then sequentially enters the water-cooled condenser (105) and the low-temperature radiator (108).

7. The thermal management system of claim 5, wherein in the second mode, the cooler (107), the power cell (106), and the second water pump (109) are connected in series.

8. The thermal management system of claim 1, wherein the multi-way valve (103) has a first valve port connected to the second end of the bypass conduit (102), a second valve port connected to the motor (100) via a conduit, and a third valve port connected to the water cooled condenser (105) via a conduit.

9. A vehicle, characterized in that it comprises a thermal management system (1) according to any one of claims 1-8.

10. The vehicle of claim 9, wherein the vehicle has a first driving state and a second driving state, the first driving state having a driving range that is less than the driving range of the second driving state;

in the first driving state, the multi-way valve (103) is in a first state;

in the second driving state, the multi-way valve (103) is in a second state.