CN218966728U

CN218966728U - Heat management system of new energy automobile

Info

Publication number: CN218966728U
Application number: CN202223548841.5U
Authority: CN
Inventors: 高柏恩
Original assignee: Shanghai Steinen Automotive Engineering Technology Co ltd
Current assignee: Shanghai Steinen Automotive Engineering Technology Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-05-05
Anticipated expiration: 2032-12-30

Abstract

The utility model relates to the technical field of battery thermal management, in particular to a thermal management system of a new energy automobile, which comprises a cooling liquid module, a temperature control module, a temperature detection module, a connection module, a power battery and an electric control processing module, wherein the connection module comprises a four-way valve, a cooling liquid pipeline and a refrigerant pipeline, the cooling liquid module comprises cooling liquid, a cooling liquid tank and a cooling liquid pump, the temperature control module comprises a heating module and a cooling module, the cooling module comprises a battery radiator, a battery cooler and a refrigerating loop, the refrigerating loop comprises a condenser, an electric air conditioner compressor, a first thermal expansion valve, a second thermal expansion valve and an evaporator, the temperature detection module comprises a battery cooling liquid inlet temperature sensor, a battery cooling liquid outlet temperature sensor, an atmospheric temperature sensor, a first refrigerant pressure sensor and a second refrigerant pressure sensor.

Description

Heat management system of new energy automobile

Technical Field

The utility model relates to the technical field of battery thermal management, in particular to a thermal management system of a new energy automobile.

Background

At present, energy crisis and environmental protection problems are rapidly pushing the automobile industry to rapidly change from a traditional fuel power mode to a new energy mode, especially to a pure electric mode. Compared with the traditional automobile, the new energy automobile has more parts and components, such as a driving motor, a power battery, an on-vehicle charger and the like. Through the heat management system of the whole vehicle, the normal work of the electric components of the new energy automobile is ensured, and the safety and the power economy of the whole vehicle are further improved. Therefore, the heat management system is an important component of the new energy automobile, and most of the heat management systems in the prior art adopt direct cooling systems, can only cope with the common ambient temperature, and the cooling effect can be greatly reduced when the summer is reached.

Disclosure of Invention

The utility model aims to provide a heat management system of a new energy automobile, which aims to solve the problems in the prior art.

The technical aim of the utility model is realized by the following technical scheme:

the utility model provides a new energy automobile's heat management system, includes coolant liquid module, temperature control module, temperature detection module, connection module, power battery and automatically controlled processing module, connection module includes cross valve, coolant liquid pipeline and refrigerant pipeline, the coolant liquid pipeline is used for the flow of coolant liquid, the refrigerant pipeline is used for the flow of refrigerant, the coolant liquid module includes coolant liquid, coolant liquid pot and coolant liquid pump, coolant liquid module, temperature control module and power battery all pass through coolant liquid pipeline connection, temperature control module includes heating module and cooling module, heating module fixed mounting is in on the power battery, the coolant liquid must pass through heating module rethread coolant liquid pipeline passthrough power battery, cooling module includes battery radiator, battery cooler and refrigerating circuit, the cross valve sets up the exit of coolant liquid pipeline of power battery, the cross valve pass through the coolant liquid pipeline respectively with power battery, coolant liquid pump, battery cooler and battery radiator connection, temperature detection module are used for detecting the temperature of new energy automobile, temperature control module all adopt the equal electrical connection module and automatically controlled processing module.

In a further embodiment, the electronic control processing module includes an electronic control system and a microprocessor.

In a further embodiment, the heating module comprises a PTC heater.

In a further embodiment, the refrigeration circuit comprises a condenser, an electric air conditioner compressor, a first thermal expansion valve, a second thermal expansion valve and an evaporator, the refrigeration circuit uses refrigerant as a cooling medium, the battery cooler and the second thermal expansion valve are connected with each other through a refrigerant pipeline, and the condenser, the electric air conditioner compressor, the first thermal expansion valve, the second thermal expansion valve and the evaporator are connected into a closed circuit through the refrigerant pipeline.

Through adopting above-mentioned technical scheme, when car operational environment temperature is too high, the battery cooler accessible coolant liquid with refrigeration circuit's combined action realizes the cooling to power battery.

In a further embodiment, the temperature detection module includes a battery coolant inlet temperature sensor, a battery coolant outlet temperature sensor, an atmospheric temperature sensor, a first refrigerant pressure sensor, and a second refrigerant pressure sensor, the battery coolant inlet temperature sensor and the battery coolant outlet temperature sensor are respectively disposed at an inlet position and an outlet position of a coolant pipe of the power battery, the atmospheric temperature sensor is used for detecting an outdoor temperature, and the first refrigerant pressure sensor and the second refrigerant pressure sensor are symmetrically disposed inside refrigerant pipes at both ends of the electric air conditioner compressor.

By adopting the technical scheme, the temperature control module can select different working modes according to different conditions by mutually matching the sensors.

In summary, the utility model has the following beneficial effects:

1. the heat management module of the new energy automobile is provided with a battery cooling liquid inlet temperature sensor, a battery cooling liquid outlet temperature sensor, an atmospheric temperature sensor, a first refrigerant pressure sensor, a second refrigerant pressure sensor and an electric control processing module, wherein the sensors are mutually matched, so that the electric control processing module can control the temperature control module to select different working conditions to cope with different environmental temperatures, and the multi-layer cooling effect on the power battery can be achieved, and the multi-layer cooling effect on various environments can be dealt with;

2. the utility model provides a new energy automobile's thermal management module is through being provided with battery cooler and refrigeration circuit, when ambient temperature is too high, and when battery cooler can not satisfy the cooling requirement, refrigeration circuit can reach the cooling requirement to power battery with battery cooler joint work, can play also can effectively cool off power battery's effect when weather temperature is too high.

Drawings

FIG. 1 is a schematic diagram of a thermal management system for a new energy vehicle;

FIG. 2 is a schematic structural diagram of a thermal management system for a new energy vehicle;

FIG. 3 is a schematic diagram of the operation of a thermal management system for a new energy vehicle for implementing mode one and mode two;

FIG. 4 is a schematic diagram of the operation of a thermal management system for a new energy vehicle for implementing mode three;

fig. 5 is a schematic diagram of a thermal management system of a new energy automobile for embodying mode four.

In the figure, 1, a power battery; 2. a four-way valve; 3. a cooling liquid tank; 4. a coolant pump; 5. a battery radiator; 6. a battery cooler; 7. a PTC heater; 8. a condenser; 9. an electric air conditioner compressor; 10. a first thermal expansion valve; 11. a second thermal expansion valve; 12. an evaporator; 13. a battery coolant inlet temperature sensor; 14. a battery coolant outlet temperature sensor; 15. an atmospheric temperature sensor; 16. a first refrigerant pressure sensor; 17. a second refrigerant pressure sensor.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in fig. 1, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, a particular component geometry, and that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying an order of designating the indicated technical features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present specification, the meaning of "plurality" is two or more, unless the direction of the center is specifically defined otherwise.

Example 1:

as shown in fig. 1-2, a thermal management system of a new energy automobile comprises a cooling liquid module, a temperature control module, a temperature detection module, a connection module, a power battery 1 and an electric control processing module, wherein the connection module comprises a four-way valve 2, a cooling liquid pipeline and a refrigerant pipeline, the cooling liquid pipeline is used for flowing of cooling liquid, the refrigerant pipeline is used for flowing of refrigerant, the cooling liquid module comprises cooling liquid, a cooling liquid tank 3 and a cooling liquid pump 4, the cooling liquid module, the temperature control module and the power battery 1 are all connected through the cooling liquid pipeline, the temperature control module comprises a heating module and a cooling module, the heating module is fixedly installed on the power battery 1, the cooling liquid is required to pass through the power battery 1 through the heating module and then passes through the cooling liquid pipeline, the cooling module comprises a battery radiator 5, a battery cooler 6 and a refrigerating circuit, the four-way valve 2 is arranged at the outlet of the cooling liquid pipeline of the power battery 1, the cooling liquid pipeline is respectively connected with the cooling liquid pipeline, the cooling liquid pump 4, the battery cooler 6 and the battery radiator 5, the temperature detection module is used for detecting the temperatures of the new energy automobile, and the cooling liquid module, the temperature control module, the temperature detection module and the electric control module are electrically connected with the processing module through leads.

In this embodiment, the electronic control processing module comprises an electronic control system and a microprocessor, and the heating module comprises a PTC heater 7.

As shown in fig. 1-2, the refrigeration circuit includes a condenser 8, an electric air-conditioning compressor 9, a first thermal expansion valve 10, a second thermal expansion valve 11, and an evaporator 12, the refrigeration circuit uses a refrigerant as a cooling medium, the battery cooler 6 and the second thermal expansion valve 11 are connected to each other through a refrigerant pipe, and the condenser 8, the electric air-conditioning compressor 9, the first thermal expansion valve 10, the second thermal expansion valve 11, and the evaporator 12 are connected into a closed circuit through the refrigerant pipe.

As shown in fig. 2, the temperature detection module includes a battery coolant inlet temperature sensor 13, a battery coolant outlet temperature sensor 14, an atmospheric temperature sensor 15, a first refrigerant pressure sensor 16 and a second refrigerant pressure sensor 17, the battery coolant inlet temperature sensor 13 and the battery coolant outlet temperature sensor 14 are respectively disposed at an inlet position and an outlet position of a coolant pipe of the power battery 1, the atmospheric temperature sensor 15 is used for detecting an outdoor temperature, the first refrigerant pressure sensor 16 and the second refrigerant pressure sensor 17 are symmetrically disposed inside the refrigerant pipe at both ends of the electric air conditioner compressor 9, the internal temperature of the power battery 1 can be detected through the battery coolant inlet temperature sensor 13 and the battery coolant outlet temperature sensor 14, the external air temperature can be detected through the atmospheric temperature sensor 15, the atmospheric temperature sensor 15 can transmit data to the processor, the processor can select a proper cooling mode through the electronic control system according to the data, and the first refrigerant pressure sensor 16 and the second refrigerant pressure sensor 17 are used for judging whether the coolant pipe is blocked or leaked.

As shown in fig. 2, the solid line is a coolant pipe and the broken line is a refrigerant pipe.

The specific implementation process comprises the following steps: the thermal management system has four working modes, namely, a first mode: as shown in fig. 3, when the temperature of the power battery 1 is in a normal range, and heating or cooling is not needed, the coolant pump 4 drives the coolant to circulate inside the power battery 1, and only the coolant tank 3 and the coolant pump 4 work, so that the internal temperature of the power battery 1 is kept at a certain temperature;

mode two: as shown in fig. 3, when the battery temperature is low, only the coolant tank 3, the coolant pump 4, and the PTC heater 7 are operated, and the PTC heater 7 is turned on to heat the power battery 1;

mode three: as shown in fig. 4, the atmospheric temperature sensor 15 detects the outside temperature, when the outside temperature is at the normal temperature and the room temperature is not high and the battery needs to be heated, the four-way valve 2 is switched to the pipeline of the battery radiator 5, and only the cooling liquid tank 3, the cooling liquid pump 4 and the battery radiator 5 work, so that the cooling of the power battery 1 can be realized through the battery radiator 5;

mode four: as shown in fig. 5, the ambient temperature sensor 15 detects that the temperature of the outside is high, at this time, the battery radiator 5 cannot cool the power battery 1, at this time, the four-way valve 2 is switched to the battery cooler 6 pipeline, at this time, the cooling liquid tank 3, the cooling liquid pump 4, the battery cooler 6, the evaporator 12, the electric air conditioner compressor 9 and the condenser 8 work, at this time, the heat of the cooling liquid is transferred to the refrigerant through the battery cooler 6, and the refrigerant transfers the heat to the air, so that the cooling of the power battery 1 can be realized.

In the embodiments disclosed herein, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art according to the specific circumstances.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and modifications to the present embodiment, which may not creatively contribute to the present utility model as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present utility model.

Claims

1. The utility model provides a new energy automobile's thermal management system, includes coolant liquid module, temperature control module, temperature detection module, connection module, power battery (1) and automatically controlled processing module, its characterized in that: the connection module comprises a four-way valve (2), a cooling liquid pipe and a refrigerant pipe, wherein the cooling liquid pipe is used for flowing cooling liquid, the refrigerant pipe is used for flowing the refrigerant, the cooling liquid module comprises cooling liquid, a cooling liquid tank (3) and a cooling liquid pump (4), the cooling liquid module, a temperature control module and a power battery (1) are all connected through the cooling liquid pipe, the temperature control module comprises a heating module and a cooling module, the heating module is fixedly installed on the power battery (1), the cooling liquid must pass through the heating module and then pass through the cooling liquid pipe through the power battery (1), the cooling module comprises a battery radiator (5), a battery cooler (6) and a refrigerating loop, the four-way valve (2) is arranged at the outlet of the cooling liquid pipe of the power battery (1), the cooling liquid pump (4), the battery cooler (6) and the battery radiator (5) are respectively connected through the cooling liquid pipe, the temperature detection module is used for detecting the temperature of a new energy automobile, and the temperature detection module, the temperature control module and the temperature detection module are electrically connected with each other through the electric control module.

2. The thermal management system of a new energy automobile of claim 1, wherein: the electric control processing module comprises an electric control system and a microprocessor.

3. The thermal management system of a new energy automobile of claim 1, wherein: the heating module comprises a PTC heater (7).

4. The thermal management system of a new energy automobile of claim 1, wherein: the refrigeration circuit comprises a condenser (8), an electric air conditioner compressor (9), a first thermal expansion valve (10), a second thermal expansion valve (11) and an evaporator (12), wherein the refrigeration circuit adopts a refrigerant as a cooling medium, the battery cooler (6) and the second thermal expansion valve (11) are connected with each other through a refrigerant pipeline, and the condenser (8), the electric air conditioner compressor (9), the first thermal expansion valve (10), the second thermal expansion valve (11) and the evaporator (12) are connected into a closed circuit through the refrigerant pipeline.

5. The thermal management system of a new energy automobile of claim 4, wherein: the temperature detection module comprises a battery cooling liquid inlet temperature sensor (13), a battery cooling liquid outlet temperature sensor (14), an atmospheric temperature sensor (15), a first refrigerant pressure sensor (16) and a second refrigerant pressure sensor (17), wherein the battery cooling liquid inlet temperature sensor (13) and the battery cooling liquid outlet temperature sensor (14) are respectively arranged at the inlet position and the outlet position of a cooling liquid pipeline of the power battery (1), the atmospheric temperature sensor (15) is used for detecting outdoor temperature, and the first refrigerant pressure sensor (16) and the second refrigerant pressure sensor (17) are symmetrically arranged inside the refrigerant pipelines at two ends of the electric air conditioner compressor (9).