CN210949807U

CN210949807U - Vehicle cooling system

Info

Publication number: CN210949807U
Application number: CN201920853219.4U
Authority: CN
Inventors: 胡均奕; 祝林; 冯梦龙
Original assignee: Zhejiang Geely Holding Group Co Ltd; Ningbo Shangzhongxia Automatic Transmission Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Ningbo Shangzhongxia Automatic Transmission Co Ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-07-07
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses a vehicle cooling system, include: a drive fluid circulation control circuit and a vehicle control device; the drive liquid circulation control circuit includes: the system comprises an intercooler, a water-vapor separator, a water pump, a cooling part of an electrical module, a three-way valve, an oil cooler and an expansion kettle connected with the water-vapor separator which are connected in sequence; a water inlet of the oil cooler is connected with a first water outlet of the three-way valve, and a water outlet of the oil cooler is respectively connected with a second water outlet of the three-way valve and the intercooler; the vehicle control device is coupled with the water pump and used for controlling the opening and closing of the water pump. The utility model provides a vehicle cooling system can be according to the temperature situation of change and each part to the requirement connection of temperature save the arrangement space in each part hydrologic cycle trend and connected mode.

Description

Vehicle cooling system

Technical Field

The utility model relates to a vehicle cooling field especially relates to a vehicle cooling system.

Background

Under the traditional cooling system, the oil temperature of an inlet of an oil cooler of the gearbox is about 130 ℃ at most and about 100 ℃ at least, and corresponds to the temperature of cooling water of 90 ℃, so that the cooling efficiency is not very high (the temperature can be reduced by 3-4 ℃ usually). However, the higher oil temperature interval can ensure that the viscosity of the transmission oil is reduced to the minimum, so that the influence (drag torque) of the transmission oil on the transmission torque between the shaft teeth can be reduced.

Under the traditional cooling system, an additional motor cannot be cooled by using the existing gearbox oil when being cooled, so that a water-cooled motor system appears. The advantage of this system is that the coolant comes from an extra coolant circuit and is not affected by other vehicle component systems. The disadvantage is that the cooling water can not directly contact with the motor, so the motor shell, the silicon steel sheets of the stator and the air between the shell and the stator coil are used as media to cool the stator coil which generates heat, and the cooling efficiency can not be maximized.

The second cooling oil path is mainly used for an integrated motor, the motor is placed inside a gearbox, and a stator coil can be directly contacted with gearbox oil, so that heat conduction can be maximized. However, the scheme has high requirement on the oil temperature of the gearbox, is generally lower than the oil temperature (about 80 ℃) of the traditional gearbox, so that additional air cooling is needed for cooling the gearbox oil, and electronic equipment of a hybrid engine type needs to be cooled. This solution also requires extra transmission oil for guiding outside the transmission body to enter the intercooler for cooling. The cost of later oil changes in the transmission can be higher, and the initial oil level in the transmission can also rise and be heavier.

Therefore, how to provide a vehicle cooling system can maximize the cooling efficiency of the oil cooler of the transmission and reduce the oil temperature of the transmission, which is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

In order to achieve the above object, the present invention provides a vehicle cooling system, including: a drive fluid circulation control circuit and a vehicle control device; the drive liquid circulation control circuit includes: the system comprises an intercooler, a water-vapor separator, a water pump, a cooling part of an electrical module, a three-way valve, an oil cooler and an expansion kettle connected with the water-vapor separator which are connected in sequence; a water inlet of the oil cooler is connected with a first water outlet of the three-way valve, and a water outlet of the oil cooler is respectively connected with a second water outlet of the three-way valve and the intercooler; the vehicle control device is coupled with the water pump and used for controlling the opening and closing of the water pump.

Further, the drive liquid circulation control circuit further includes: a first temperature sensor disposed between the water pump and the appliance module, the first temperature sensor for detecting a temperature of water in the cooling circuit, the first temperature sensor further coupled to the vehicle control device.

Further, the three-way valve is coupled to the vehicle control device for controlling the three-way valve to open or close.

Further, the drive liquid circulation control circuit further includes: the second temperature sensor is arranged inside the gearbox body and coupled with the vehicle control device, the second temperature sensor is used for detecting the oil temperature inside the gearbox body, and the vehicle control device is used for controlling the flow direction of liquid in the three-way valve according to the temperature detected by the second temperature sensor.

Further, the cooling member of the appliance module includes: the cooling part of the first electrical element, the cooling part of the second electrical element and the cooling part of the third electrical element are connected in sequence.

Furthermore, the rated temperatures of the cooling piece of the first electrical element, the cooling piece of the second electrical element and the cooling piece of the third electrical element are sequentially increased when the cooling pieces of the first electrical element, the second electrical element and the third electrical element work normally.

Further, the vehicle control apparatus includes: a gearbox controller coupled to the first temperature sensor, the second temperature sensor, the water pump, and the three-way valve, respectively.

Further, the cooling member of the first electrical component is a cooling member of an in-vehicle charger.

Further, the cooling part of the second electrical component is a cooling part of the voltage stabilizer, and the cooling part of the third electrical component is a cooling part of the inverter.

In addition the utility model also provides a vehicle, the vehicle is provided with the aforesaid vehicle cooling system.

Implement the embodiment of the utility model provides a, following beneficial effect has:

the invention firstly removes the traditional loop of the oil cooler, and an additional cooling liquid loop is newly built in the whole vehicle system and is cooled by a special intercooler. Ensuring that the cooling fluid does not have an excessively high heat source. By using the additional cooling circuit, no additional high heat source except for the heat generating parts in the existing circuit is ensured, so that the temperature of the cooling liquid is ensured. Due to the requirement of the serial parts on the cooling liquid (an inverter needs cooling water with the temperature of not higher than 60 ℃), the cooling liquid with lower temperature can be used by connecting the oil cooler into the cooling loop in series, and the cooling efficiency of the oil cooler is improved.

In the cooling loop, a small bypass valve is added at the inlet end of the oil cooler of the gearbox, so that the flow of cooling water can be distributed from 0-100%. The three-way valve is used for distributing cooling water flow entering the oil cooler of the transmission, when the oil temperature is low and needs to be rapidly heated, and when the temperature of cooling water is lower than the oil temperature, the cooling water flow passing through the oil cooler is closed, so that the low-temperature cooling water is ensured not to slow down the temperature rise process of the oil of the transmission. However, when the cooling water temperature is higher than the transmission oil, the cooling water flow passing through the oil cooler needs to be the maximum to increase the temperature rise time of the transmission oil temperature.

According to the invention, by using the latest design idea of the cooling circuit, the oil cooler is connected in series into a group of brand-new cooling liquid circuits which are lower in temperature and higher in flow rate compared with the traditional gearbox cooling liquid circuit, so that the cooling capacity of the oil cooler is ensured. Utilize the coolant liquid of lower temperature, promote the heat exchange efficiency of oil cooler, promote gearbox oil to the cooling efficiency and the cooling capacity of motor.

The water circulation trend and the connection mode of each component are connected according to the water temperature change condition and the requirement of each component on the temperature, so that the arrangement space is saved.

Drawings

In order to illustrate the cleaning device according to the present invention more clearly, the drawings needed for the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.

FIG. 1 is a schematic diagram of a vehicle cooling system according to the present invention;

FIG. 2 is a schematic diagram of a control structure of the cooling system of the present invention;

wherein the reference numerals in the figures correspond to: 11-an intercooler, 12-a water-vapor separator, 13-a water pump, 14-a first temperature sensor, 15-a vehicle-mounted charger, 16-a voltage stabilizer, 17-an inverter, 18-a three-way valve, 19-an oil cooler, 121-an expansion kettle, 21-a vehicle control device, 22-a gearbox controller and 23-a second temperature sensor.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Along with the automobile popularity is higher and higher, the automobile gradually moves into thousands of households, and the increase of automobile space demand is under the prerequisite of vehicle normal work, must reduce the space occupancy of automobile inner part, and the cooling system of traditional vehicle has the space that occupies greatly, problem such as cooling efficiency is low. In order to solve the above problem, the utility model provides a vehicle cooling system, fig. 1 is the utility model discloses a vehicle cooling system's schematic structure, as shown in fig. 1, include: a drive liquid circulation control circuit and a vehicle control device 21;

the drive liquid circulation control circuit includes: the system comprises an intercooler 11, a water-vapor separator 12, a water pump 13, a cooling part of an electrical module, a three-way valve 18, an oil cooler 19 and an expansion kettle 121 connected with the water-vapor separator 12 which are connected in sequence; a water inlet of the oil cooler 19 is connected with a first water outlet of the three-way valve 18, and a water outlet of the oil cooler 19 is respectively connected with a second water outlet of the three-way valve 18 and the intercooler 11;

the vehicle control device 21 is coupled to the water pump 13 for controlling the water pump 13 to be turned on and off.

Specifically, the vehicle cooling system may be configured to reduce the temperature of the heat generating electrical components and the transmission of the vehicle, and the driving liquid circulation control loop may include an intercooler 11, a water-vapor separator 12, a water pump 13, a cooling member of an electrical module, a three-way valve 18, an oil cooler 19, and an expansion tank 121 connected to the water-vapor separator 12, which are connected in sequence. The connection of each device can be through the pipe connection, and the cooling mode of drive liquid circulation control return circuit can be water circulative cooling, also can be oil circulative cooling. The connection order of the intercooler 11, the water-vapor separator 12, the water pump 13, the cooling member of the appliance module, the three-way valve 18, and the oil cooler 19 is not fixed, and the connection positions thereof may be changed as needed. For example, the water pump 13 is disposed between the oil cooler 19 and the intercooler 11.

It should be noted that the material, type, size, and installation position of the intercooler 11, the water-vapor separator 12, the water pump 13, the cooling member of the electrical module, the three-way valve 18, the oil cooler 19, and the expansion tank 121 are not fixed, and may be set according to actual needs.

The vehicle control device 21 may be coupled to the water pump 13 for controlling the opening and closing of the water pump 13, respectively, the vehicle control device 21 may be coupled to the three-way valve 18, and the connection manner of the vehicle control device 21 to the water pump 13 and the three-way valve 18, respectively, may be connected by a can bus or a circuit thereof.

When the vehicle cooling system works, the water pump 13 pulls cooling water or oil in the intercooler 11 into the circulating pipeline, and because the heat generated in the working state of the electrical module is lower than the heat generated in the working state of the oil cooler 19, the cooling water or oil in the pipeline firstly flows through the cooling part of the electrical module and then flows to the second water outlet of the three-way valve 18 until the intercooler 11, and the cooling water or oil is cooled by the intercooler 11 and then circulates. After the motor of the vehicle runs for a certain time, the vehicle control device 21 controls the three-way valve 18 to close the second water outlet and open the first water outlet, cooling water or oil flows through the oil cooler 19 to the intercooler 11, and the intercooler 11 reduces the temperature of the cooling water or oil and recycles the cooling water or oil. When the cooling water or oil generates gas, the expansion tank 121 sucks the gas into the expansion tank 121.

The invention ensures the cooling capacity of the oil cooler 19 by using the latest design idea of the cooling circuit and connecting the oil cooler 19 in series into a group of brand new cooling liquid circuits with lower temperature and higher flow compared with the traditional gearbox cooling liquid circuit. Utilize the coolant liquid of lower temperature, promote the heat exchange efficiency of oil cooler 19, promote gearbox oil to the cooling efficiency and the cooling capacity of motor, each part hydrologic cycle trend and connected mode connect according to the temperature situation of change and each part to the requirement of temperature and save arrangement space. After the motor of the vehicle runs for a certain time, the vehicle control device 21 controls the three-way valve 18 to close the second water outlet and open the first water outlet, so that the oil temperature in the gearbox can reach a better temperature quickly, the phenomenon that the viscosity in the oil tank is too high due to too low oil temperature in the gearbox is avoided, energy loss is increased, the safety index is improved, the water circulation direction and the connection mode of each component are connected according to the water temperature change condition and the requirement of each component on the temperature, and the arrangement space is saved.

On the basis of the above embodiments, in an embodiment of the present specification, the driving liquid circulation control loop further includes: a first temperature sensor 14 arranged between the water pump 13 and the appliance module, the first temperature sensor 14 being adapted to detect the temperature of the water in the cooling circuit, the first temperature sensor 14 being further coupled to the vehicle control means 21.

Specifically, the first temperature sensor 14 may be disposed between the water pump 13 and the electrical module, or between the three-way valve 18 and the electrical module, and the specific location may be set according to actual needs, the first temperature sensor 14 is configured to detect the temperature of the cooling water or oil inside the driving liquid circulation control loop, and the vehicle control device 21 may be configured to detect the operating state of the driving liquid circulation control loop and the operating effect of the intercooler 11 according to the temperature fed back by the first temperature sensor 14.

The first temperature sensor 14 can detect the operating state of the drive fluid circulation control loop, increasing the reliability of the circulation cooling of the drive fluid circulation control loop.

On the basis of the above embodiments, in an embodiment of the present specification, the driving liquid circulation control loop further includes: the second temperature sensor 23 is arranged inside the gearbox casing, the second temperature sensor 23 is coupled with the vehicle control device 21, the second temperature sensor 23 is used for detecting the oil temperature inside the gearbox casing, and the vehicle control device 21 is used for controlling the flow direction of liquid in the three-way valve 18 according to the temperature detected by the second temperature sensor 23.

Specifically, the second temperature sensor 23 may be configured to detect the temperature of the oil inside the transmission case, and the second temperature sensor 23 may be coupled to the vehicle control device 21 in a can bus connection or a circuit connection. The vehicle control device 21 may be configured to control the flow direction of the fluid in the three-way valve 18 based on the temperature of the oil in the transmission, which is detected by the second temperature sensor 23. For example, when the temperature of the working oil in the motor inside the transmission is preferably 70 to 80 degrees celsius, and the temperature detected by the second temperature sensor 23 is higher than the temperature of the working oil in the motor inside the transmission, the vehicle control device 21 controls the three-way valve 18 to open the first water outlet and close the second water outlet, so that the cooling liquid flows through the oil cooler 19, and the temperature of the oil inside the transmission is reduced.

Because the oil is characterized in that the viscosity is lower when the temperature is higher, and the required better viscosity of the motor in the gearbox is higher, the second temperature sensor 23 is arranged in the gearbox body, so that the heating efficiency of the oil temperature in the gearbox before reaching the better working temperature can be avoided, the cooling efficiency of the driving liquid circulation control loop is improved, and the energy is saved.

On the basis of the above embodiments, in one embodiment of the present specification, the cooling member of the electrical module includes: the cooling part of the first electrical element, the cooling part of the second electrical element and the cooling part of the third electrical element are connected in sequence.

Specifically, the nominal temperatures of the cooling element of the first electrical component, the cooling element of the second electrical component and the cooling element of the third electrical component during normal operation may be sequentially increased. For example, the cooling element of the first electrical component is closer to intercooler 11 than the cooling element of the second electrical component and the cooling element of the third electrical component in the drive fluid circulation control loop.

The cooling efficiency of the driving liquid circulation control loop is increased, faults of vehicle electrical appliances caused by overhigh temperature are avoided, and meanwhile the safety factor of the vehicle is improved.

In addition to the above-described embodiments, in one embodiment of the present specification, the vehicle control device 21 includes: a transmission controller 22, the transmission controller 22 being coupled to the first temperature sensor 14, the second temperature sensor 23, the water pump 13, and the three-way valve 18, respectively.

The vehicle control device 21 may be coupled to the first temperature sensor 14, the second temperature sensor 23, the water pump 13, and the three-way valve 18 via a transmission controller 22, respectively, in a can bus connection.

The management of the vehicle to the cooling system is enhanced, and the vehicle safety index is improved.

On the basis of the above-described embodiment, in one embodiment of the present specification, the cooling member of the first electrical component is a cooling member of the in-vehicle charger 15.

Specifically, the type, size, and mounting position of the in-vehicle charger 15 are not fixed, and may be set according to actual needs.

Since the usage period of the in-vehicle charger 15 is different from the usage period of the oil cooler 19, the cooling efficiency of the vehicle cooling system can be improved.

Additionally the utility model provides a vehicle, the vehicle is provided with above-mentioned vehicle cooling system.

Since the vehicle has the technical effects of the vehicle cooling system, the detailed description is omitted.

The working flow of the vehicle cooling system of the present invention can be shown as follows, fig. 2 is a schematic diagram of the control structure of the vehicle cooling system of the present invention, and the control structure of the vehicle cooling system is shown in fig. 2;

the cooling circuit is independent of the engine cooling circuit, and the circuit is directly connected with the expansion kettle 121 and enters the circuit through the water-vapor separator 12. The water pump 13 is used to drive the coolant through the first temperature sensor 14, the on-board charger 15, and the regulator 16 into the inverter 17, and then through a three-way valve 18. The three-way valve 18 will branch into two oil paths, and the cooling water path a leads the cooling liquid to directly enter the intercooler 11 through the three-way valve 18 without passing through the oil cooler 19. The cooling water path B leads the cooling liquid to completely pass through the oil cooler 19 through the three-way valve 18 and then enter the intercooler 11.

And the gearbox controller 22 closes the first water outlet of the three-way valve 18 and opens the second water outlet of the three-way valve 18 according to the condition that the gearbox oil temperature detected by the second temperature sensor 23 is lower than 95 ℃, and then the A cooling water path is taken.

And the gearbox controller 22 closes the second water outlet of the three-way valve 18, opens the first water outlet of the three-way valve 18 and runs the B cooling water path according to the condition that the gearbox oil temperature detected by the second temperature sensor 23 is higher than 95 ℃.

The first temperature sensor 14 will detect the initial temperature of the water or oil and use this to make temperature detection. The vehicle-mounted charger 15 does not generate any heat when the charging pile is not connected, and the voltage stabilizer 16 can increase the temperature by 5 ℃. The temperature required by the inverter 17 is not higher than 65 ℃, and the flow rate is 8L/min at the lowest and 12L/min at the highest. The temperature at the oil cooler 19 is expected to be at 70 c and the flow rate depends on the open or closed state of the three-way valve 18. With or without flow. The three-way valve 18 is controlled by a transmission controller 22, is an on-off valve, has no flow regulation capability, and can only distribute 0% or 100% of flow to the oil cooler 19.

It should be noted that, in the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is intended or should be construed to indicate or imply relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego the subject matter and should not be construed as an admission that the applicant does not consider such subject matter to be part of the disclosed subject matter.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.

Claims

1. A vehicle cooling system, comprising: a drive fluid circulation control circuit and a vehicle control device (21);

the drive liquid circulation control circuit includes: the system comprises an intercooler (11), a water-vapor separator (12), a water pump (13), a cooling part of an electrical module, a three-way valve (18), an oil cooler (19) and an expansion kettle (121) which are connected with the water-vapor separator (12) in sequence; a water inlet of the oil cooler (19) is connected with a first water outlet of the three-way valve (18), and a water outlet of the oil cooler (19) is respectively connected with a second water outlet of the three-way valve (18) and the intercooler (11);

the vehicle control device (21) is coupled with the water pump (13) and is used for controlling the opening and closing of the water pump (13).

2. The vehicle cooling system of claim 1, wherein the drive liquid circulation control loop further comprises: a first temperature sensor (14) arranged between the water pump (13) and the electrical module, the first temperature sensor (14) being adapted to detect the temperature of water in the cooling circuit, the first temperature sensor (14) being further coupled to the vehicle control means (21).

3. A vehicle cooling system according to claim 1, characterised in that the three-way valve (18) is coupled with the vehicle control device (21), which vehicle control device (21) is arranged to control the three-way valve (18) to open or close.

4. The vehicle cooling system of claim 2, wherein the drive liquid circulation control loop further comprises: a second temperature sensor (23) arranged inside the gearbox casing, wherein the second temperature sensor (23) is coupled with the vehicle control device (21), the second temperature sensor (23) is used for detecting the oil temperature inside the gearbox casing, and the vehicle control device (21) is used for controlling the flowing direction of the liquid in the three-way valve (18) according to the temperature detected by the second temperature sensor (23).

5. The vehicle cooling system of claim 1, wherein the cooling member of the appliance module comprises: the cooling part of the first electrical element, the cooling part of the second electrical element and the cooling part of the third electrical element are connected in sequence.

6. The vehicle cooling system according to claim 5, wherein the cooling member of the first electrical component, the cooling member of the second electrical component, and the cooling member of the third electrical component are sequentially increased in rated temperature at the time of normal operation.

7. The vehicle cooling system according to claim 4, characterized in that the vehicle control device (21) includes: a gearbox controller (22), the gearbox controller (22) being coupled with the first temperature sensor (14), the second temperature sensor (23), the water pump (13), the three-way valve (18), respectively.

8. Vehicle cooling system according to claim 5 or 6, characterised in that the cooling of the first electrical component is a cooling of an on-board charger (15).

9. Vehicle cooling system according to claim 5, characterised in that the cooling of the second electrical component is a cooling of a stabiliser (16) and the cooling of the third electrical component is a cooling of an inverter (17).

10. A vehicle, characterized in that the vehicle is provided with a vehicle cooling system according to any one of claims 1-9.