Electrically-driven cooling system coupled with water-air intercooler and automobile

Abstract

The utility model discloses an electrically-driven cooling system coupled with a water-air intercooler and an automobile, and relates to the field of automobile cooling systems, the electrically-driven cooling system comprises a cooling unit, one end of the cooling unit is connected with a water outlet of an electronic water pump, and the other end of the cooling unit is connected with a water inlet of a first three-way valve; a water inlet of the radiator is connected with a first water outlet of the first three-way valve, a water outlet of the radiator is connected with a water inlet of the expansion kettle, the water inlet of the expansion kettle is further connected with a second water outlet of the first three-way valve, and a water outlet of the expansion kettle is connected with a water inlet of the electronic water pump; the temperature sensor is arranged between the expansion kettle and the electronic water pump, and the temperature sensor controls the opening angle of the first water outlet and the second water outlet of the first three-way valve according to the temperature of the cooling liquid; according to the cooling system, small circulation is added, so that the cooling system has the functions of rapid heating and heat preservation, the efficiency of the system is improved, and the risk of inter-cooling freezing can be avoided.

Description

Technical Field

[0001] The utility model belongs to the field of automobile cooling systems, and more specifically relates to an electric drive cooling system coupled with a water-to-air intercooler and an automobile. Background Art

[0002] For vehicles with supercharged water-to-air intercooled engines (including fuel vehicles and hybrid vehicles), the coolant of the water-to-air intercooler is mostly circulated independently, requiring the addition of a separate water pump and radiator. This will result in an increase in parts, complex cabin piping, difficult layout, and high cost. In addition, the water-to-air intercooler does not have a small loop, which will cause the water temperature to rise more slowly. In cold weather, the water temperature has difficulty reaching the optimal state, resulting in intercooler ice formation. For models using EGR, the use of EGR will also be restricted. The electric drive cooling cycle also does not have a small loop, which will also cause the water temperature to rise more slowly, thereby affecting the oil temperature rise and reducing the efficiency of the electric drive system. Utility Model Content

[0003] The purpose of the utility model is to address the deficiencies in the existing technology and provide an electric drive cooling system and a vehicle coupled with a water-to-air intercooler. The cooling system adds a small cycle, so that the cooling system has the functions of rapid heating and heat preservation, improves the efficiency of the system, and avoids the risk of intercooler freezing.

[0004] In order to achieve the above objectives, the present invention provides an electrically driven cooling system coupled with a water-to-air intercooler, comprising:

[0005] a cooling unit, one end of which is connected to the water outlet of the electronic water pump, and the other end of which is connected to the water inlet of the first three-way valve;

[0006] a radiator, whose water inlet is connected to the first water outlet of the first three-way valve, whose water outlet is connected to the water inlet of the expansion kettle, whose water inlet is further connected to the second water outlet of the first three-way valve, and whose water outlet is connected to the water inlet of the electronic water pump;

[0007] A temperature sensor is provided between the expansion kettle and the electronic water pump, and the temperature sensor controls the opening angles of the first water outlet and the second water outlet of the first three-way valve according to the temperature of the coolant.

[0008] Optionally, the cooling unit includes:

[0009] A second three-way valve, the water inlet of which is connected to the water outlet of the electronic water pump;

[0010] a generator cooling branch, one end of which is connected to the first water outlet of the second three-way valve;

[0011] a drive motor cooling branch, one end of which is connected to the second water outlet of the second three-way valve;

[0012] The generator cooling branch and the drive motor cooling branch are connected in parallel, and the other ends of the generator cooling branch and the drive motor cooling branch are both connected to the water inlet of the first three-way valve.

[0013] Optionally, the generator cooling branch includes a generator controller, a water-cooled intercooler and a generator oil cooler connected in series.

[0014] Optionally, the drive motor cooling branch includes a drive motor controller and a drive motor oil cooler connected in series.

[0015] Optionally, the generator controller, the water-cooled intercooler, the generator oil cooler, the drive motor controller and the drive motor oil cooler are all heat source components.

[0016] Optionally, the drive motor controller includes an on-board charger and a DC-DC converter.

[0017] Optionally, the second three-way valve is an electronic three-way valve, and each branch of the second three-way valve is in a normally open state.

[0018] Optionally, the first three-way valve is a wax-type mechanical three-way valve, and the first water outlet and the second water outlet of the first three-way valve are opened alternately.

[0019] Optionally, the expansion kettle is made of transparent material.

[0020] The utility model also provides an automobile, comprising the electric drive cooling system coupled with the water-to-air intercooler.

[0021] The utility model provides an electric drive cooling system and a vehicle coupled with a water-to-air intercooler, the beneficial effects of which are as follows: in the cooling system, the water-to-air intercooler and the electric drive cooling system share the coolant and are coupled into a cooling circulation system, thereby improving the integration level and eliminating a water pump, a radiator and related piping, thereby simplifying the cabin layout, increasing the degree of freedom and reducing the operating cost.

[0022] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0024] Figure 1 A schematic structural diagram of an electric drive cooling system coupled with a water-to-air intercooler according to an embodiment of the present invention is shown.

[0025] Description of reference numerals:

[0026] 1. Electronic water pump; 2. Second three-way valve; 3. Generator controller; 4. Water-cooled intercooler; 5. Generator oil cooler; 6. Drive motor controller; 7. Drive motor oil cooler; 8. First three-way valve; 9. Radiator; 10. Expansion kettle; 11. Temperature sensor. DETAILED DESCRIPTION

[0027] The following describes preferred embodiments of the present invention in greater detail. Although preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0028] The utility model provides an electrically driven cooling system coupled with a water-to-air intercooler, comprising:

[0029] A cooling unit, one end of which is connected to the water outlet of the electronic water pump, and the other end of which is connected to the water inlet of the first three-way valve;

[0030] A radiator, wherein the water inlet is connected to the first water outlet of the first three-way valve, the water outlet of the radiator is connected to the water inlet of the expansion kettle, the water inlet of the expansion kettle is further connected to the second water outlet of the first three-way valve, and the water outlet of the expansion kettle is connected to the water inlet of the electronic water pump;

[0031] The temperature sensor is arranged between the expansion kettle and the electronic water pump. The temperature sensor controls the opening angles of the first water outlet and the second water outlet of the first three-way valve according to the temperature of the coolant.

[0032] Specifically, in the cooling system, the electronic water pump circulates the coolant in the cooling unit, thereby transferring the heat generated by the vehicle power system to the coolant. When the coolant temperature is lower than a preset temperature, the water inlet of the first three-way valve can be connected to the second water outlet. In this way, after the coolant comes out of the cooling unit, it is directly sent back to the expansion pot and the electronic water pump. In this way, the coolant realizes a small circulation operation, so that the coolant temperature rises rapidly and can quickly reach the optimal operating temperature. When the coolant temperature reaches the preset temperature, the opening of the second water outlet is gradually reduced, and the opening of the first water outlet is gradually opened and increased. In this way, the portion of the coolant participating in the small circulation operation begins to decrease, and the coolant begins to flow out of the first water outlet through the radiator and then returns to the expansion pot. In this way, a portion of the coolant also begins to participate in the large circulation operation, exchanging heat through the radiator, thereby maintaining the coolant temperature at a preset temperature. When the coolant temperature is significantly higher than the preset temperature, the water inlet of the first three-way valve is connected only to the first water outlet, and all the coolant participates in the large circulation operation. In this way, the coolant is heat exchanged through the radiator to prevent the vehicle water temperature from being too high.

[0033] The electronic water pump in the cooling system changes the flow of coolant in the system by adjusting the speed, and cooperates with the radiator to regulate the cooling system temperature and coolant temperature.

[0034] Optionally, the cooling unit comprises:

[0035] The water inlet of the second three-way valve is connected to the water outlet of the electronic water pump;

[0036] A generator cooling branch, one end of which is connected to the first water outlet of the second three-way valve;

[0037] A drive motor cooling branch, one end of which is connected to the second water outlet of the second three-way valve;

[0038] The generator cooling branch and the drive motor cooling branch are connected in parallel, and the other ends of the generator cooling branch and the drive motor cooling branch are both connected to the water inlet of the first three-way valve.

[0039] Optionally, the second three-way valve is an electronic three-way valve, and each branch of the second three-way valve is in a normally open state.

[0040] Specifically, the cooling unit includes a second three-way valve, a generator cooling branch, and a drive motor cooling branch, with the two cooling branches connected in parallel. Since the generator cooling branch and the drive motor cooling branch each require a water pump and radiator for cooling, and each cooling method requires coolant, this cooling system connects the two cooling branches in parallel. This allows the two cooling branches to share the coolant, and only a single water pump and radiator are required to circulate both cooling branches.

[0041] Optionally, the generator cooling branch includes a generator controller, a water-cooled intercooler and a generator oil cooler connected in series.

[0042] Optionally, the drive motor cooling branch includes a drive motor controller and a drive motor oil cooler connected in series.

[0043] Optionally, the generator controller, the water-cooled intercooler, the generator oil cooler, the drive motor controller and the drive motor oil cooler are all heat source components.

[0044] Specifically, in this cooling system, the electronic water pump, the first three-way valve and the second three-way valve are control components. The first three-way valve changes the connection mode according to the signal of the temperature sensor, and the second three-way valve is in a normally open state. In this way, the above three components can control the working state of the electric drive cooling cycle, that is, the switching of large and small cycles; it is adjusted according to the temperature of the generator controller, the temperature of the drive motor controller, the engine intake temperature, the generator oil temperature, the drive motor oil temperature and the coolant temperature. The engine intake temperature is controlled by the water-cooled intercooler, the generator oil temperature is controlled by the generator oil cooler, and the drive motor oil temperature is controlled by the drive motor oil cooler. The coolant temperature is sensed and monitored by the temperature sensor. In this way, when the coolant temperature does not exceed the preset temperature upper limit, it ensures that the cooling system can quickly heat up the coolant and maintain it at the optimal working temperature.

[0045] Optionally, the drive motor controller includes an on-board charger and a DC-DC converter.

[0046] Optionally, the first three-way valve is a wax-type mechanical three-way valve, and the first water outlet and the second water outlet of the first three-way valve are opened alternately.

[0047] Specifically, the first three-way valve changes the communication mode between the water inlet and the two water outlets according to the coolant temperature. When the coolant temperature is lower than the preset temperature, the second water outlet of the first three-way valve is opened, so that the coolant returns directly to the expansion kettle without passing through the radiator, thereby realizing small-circulation cooling, which can quickly increase the coolant temperature; when the coolant temperature is higher than the preset temperature, the first water outlet of the first three-way valve is opened, so that the coolant passes through the radiator and returns to the expansion kettle, thereby realizing large-circulation cooling, which can exchange heat and cool the coolant through the radiator to prevent the car from running at high temperature.

[0048] Optionally, the expansion kettle is made of transparent material.

[0049] Specifically, the expansion kettle has the function of maintaining the pressure of the cooling system and the circulation components. The remaining coolant can be seen on the outside of the expansion kettle, ensuring that the coolant is within the required volume range, so that the coolant can meet both large and small circulation operations.

[0050] The utility model also provides an automobile, comprising the electric drive cooling system coupled with the water-to-air intercooler.

[0051] Example

[0052] like Figure 1 As shown, the utility model provides an electric drive cooling system coupled with a water-to-air intercooler, comprising:

[0053] A cooling unit, one end of which is connected to the water outlet of the electronic water pump 1, and the other end of which is connected to the water inlet of the first three-way valve 8;

[0054] The water inlet of the radiator 9 is connected to the first water outlet of the first three-way valve 8, the water outlet of the radiator 9 is connected to the water inlet of the expansion kettle 10, the water inlet of the expansion kettle 10 is also connected to the second water outlet of the first three-way valve 8, and the water outlet of the expansion kettle 10 is connected to the water inlet of the electronic water pump 1;

[0055] The temperature sensor 11 is provided between the expansion kettle 10 and the electronic water pump 1 . The temperature sensor 11 controls the opening angles of the first water outlet and the second water outlet of the first three-way valve 8 according to the temperature of the coolant.

[0056] In this embodiment, the cooling unit includes:

[0057] The water inlet of the second three-way valve 2 is connected to the water outlet of the electronic water pump 1;

[0058] A generator cooling branch, one end of which is connected to the first water outlet of the second three-way valve 2;

[0059] The drive motor cooling branch has one end connected to the second water outlet of the second three-way valve 2;

[0060] The generator cooling branch and the drive motor cooling branch are connected in parallel, and the other ends of the generator cooling branch and the drive motor cooling branch are both connected to the water inlet of the first three-way valve 2.

[0061] In this embodiment, the generator cooling branch includes a generator controller 3, a water-cooled intercooler 4, and a generator oil cooler 5 which are sequentially connected in series.

[0062] In this embodiment, the drive motor cooling branch includes a drive motor controller 6 and a drive motor oil cooler 7 which are sequentially connected in series.

[0063] In this embodiment, the generator controller 3 , the water-cooled intercooler 4 , the generator oil cooler 5 , the drive motor controller 6 and the drive motor oil cooler 7 are all heat source components.

[0064] In this embodiment, the drive motor controller 6 includes an on-board charger and a DC-DC converter.

[0065] In this embodiment, the second three-way valve 2 is an electronic three-way valve, and each branch of the second three-way valve 2 is in a normally open state.

[0066] In this embodiment, the first three-way valve 8 is a wax-type mechanical three-way valve.

[0067] In this embodiment, the expansion kettle 10 is made of transparent material.

[0068] The utility model also provides an automobile, comprising the electric drive cooling system coupled with the water-to-air intercooler.

[0069] In summary, the cooling system controls the switching state of the first three-way valve according to the temperature of the coolant. When the coolant temperature is lower than the preset temperature range of the car, the large circulation loop of the radiator 9 is bypassed, and the coolant passes through the generator cooling branch and the drive motor cooling branch and then directly returns to the electronic water pump 1 to form a small circulation, so that the coolant temperature rises rapidly to reach the optimal working temperature; after the coolant temperature reaches the preset temperature, the large circulation loop of the radiator 9 is gradually opened and the small circulation is gradually reduced, and the heat exchange of the radiator 9 is used to keep the coolant temperature within the preset temperature range; when the coolant temperature is obviously close to the preset temperature upper limit, the large circulation loop of the radiator 9 is fully opened and the small circulation loop is completely closed, making full use of the heat exchange of the radiator 9 to prevent the temperature from being too high.

[0070] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An electrically driven cooling system coupled with a water-to-air intercooler, characterized in that: include: a cooling unit, one end of which is connected to the water outlet of the electronic water pump, and the other end of which is connected to the water inlet of the first three-way valve; a radiator, whose water inlet is connected to the first water outlet of the first three-way valve, whose water outlet is connected to the water inlet of the expansion kettle, whose water inlet is further connected to the second water outlet of the first three-way valve, and whose water outlet is connected to the water inlet of the electronic water pump; A temperature sensor is provided between the expansion kettle and the electronic water pump, and the temperature sensor controls the opening angles of the first water outlet and the second water outlet of the first three-way valve according to the temperature of the coolant.

2. The electrically driven cooling system coupled with a water-to-air intercooler according to claim 1, characterized in that: The cooling unit comprises: A second three-way valve, the water inlet of which is connected to the water outlet of the electronic water pump; a generator cooling branch, one end of which is connected to the first water outlet of the second three-way valve; a drive motor cooling branch, one end of which is connected to the second water outlet of the second three-way valve; The generator cooling branch and the drive motor cooling branch are connected in parallel, and the other ends of the generator cooling branch and the drive motor cooling branch are both connected to the water inlet of the first three-way valve.

3. The electrically driven cooling system coupled with a water-to-air intercooler according to claim 2, characterized in that: The generator cooling branch comprises a generator controller, a water-cooled intercooler and a generator oil cooler which are sequentially connected in series.

4. The electrically driven cooling system coupled with a water-to-air intercooler according to claim 3, characterized in that: The drive motor cooling branch includes a drive motor controller and a drive motor oil cooler which are sequentially connected in series.

5. The electrically driven cooling system coupled with a water-to-air intercooler according to claim 4, characterized in that: The generator controller, the water-cooled intercooler, the generator oil cooler, the drive motor controller and the drive motor oil cooler are all heat source components.

6. The electrically driven cooling system coupled with a water-to-air intercooler according to claim 4, characterized in that: The drive motor controller includes an on-board charger and a DC-DC converter.

7. The electrically driven cooling system coupled with a water-to-air intercooler according to claim 2, characterized in that: The second three-way valve is an electronic three-way valve, and each branch of the second three-way valve is in a normally open state.

8. The electrically driven cooling system coupled with a water-to-air intercooler according to claim 1, characterized in that: The first three-way valve is a wax-type mechanical three-way valve, and the first water outlet and the second water outlet of the first three-way valve are opened alternately.

9. The electrically driven cooling system coupled with a water-to-air intercooler according to claim 1, characterized in that: The expansion kettle is made of transparent material.

10. An automobile, characterized in that: An electric drive cooling system comprising the coupled water-to-air intercooler according to any one of claims 1 to 9.

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