CN212910550U - Thermal management system of hybrid electric vehicle - Google Patents

Abstract

The utility model discloses a heat management system of a hybrid electric vehicle, which comprises a water storage pot, a low-temperature radiator, a first electronic water pump, a first three-way pipe, a water-cooled intercooler, a second three-way pipe, a motor controller, a water-cooled oil cooler, a four-way valve and a synthesis box; the water storage kettle, the low-temperature radiator and the first electronic water pump are sequentially connected in series, the motor controller and the water path of the water-cooled oil cooler are connected in series, and then the water-cooled oil cooler and the water-cooled intercooler are connected in parallel through the first three-way pipe and the second three-way pipe as a whole; the interface A of the four-way valve is communicated with the oil path outlet of the water-cooled oil cooler, the interface B is communicated with the lubricating oil inlet of the synthesis box, the interface C is communicated with the lubricating oil outlet of the synthesis box, and the interface D is communicated with the oil path inlet of the water-cooled oil cooler. The utility model discloses can reduce the whole thickness of front end cooling module, reduce the system consumption simultaneously.

Description

Thermal management system of hybrid electric vehicle

Technical Field

The utility model belongs to car heat management field, concretely relates to hybrid vehicle's heat management system.

Background

Due to the promotion of national strategy, hybrid electric vehicles develop at a high speed in recent years, and various traditional vehicle enterprises and joint venture enterprises join in competition ranks. The hybrid vehicle type adds the synthetic box, a motor controller (PEU), a battery and other heating components on the basis of the original fuel vehicle, and the technical routes of various major companies are different, so that the heat management system architecture is also different, and the heat management system needs to be specially designed according to a power system mechanism.

The existing hybrid electric vehicle heat management system adopts a single loop design, a low-temperature radiator is used for cooling a water-cooled intercooler and a motor controller, and a low-temperature radiator is used for matching with a water-cooled oil cooler to cool a synthesis box; in addition, the oil cooling loop design of the synthesis box only considers the heat dissipation requirement for meeting high load and does not consider the heat preservation requirement under low-load or extremely cold working conditions, so that the viscosity of lubricating oil is increased under low-temperature or extremely cold working conditions, the running resistance of the synthesis box is increased, and the oil consumption is increased.

Disclosure of Invention

The utility model aims at providing a hybrid vehicle's thermal management system to reduce front end cooling module's whole thickness, reduce the system consumption simultaneously.

The utility model discloses a heat management system of hybrid vehicle, including retaining kettle, low temperature radiator, first electronic water pump, first three-way pipe, water-cooled intercooler, second three-way pipe, machine controller, water-cooled oil cooler and synthetic case; an outlet of the water storage kettle is communicated with a cooling liquid inlet of the low-temperature radiator, a cooling liquid outlet of the low-temperature radiator is communicated with a cooling liquid inlet of the first electronic water pump, a cooling liquid outlet of the first electronic water pump is communicated with an inlet of the first three-way pipe, a first outlet of the first three-way pipe is communicated with a cooling liquid inlet of the water-cooling intercooler, a second outlet of the first three-way pipe is communicated with a cooling liquid inlet of the motor controller, a cooling liquid outlet of the water-cooling intercooler is communicated with a first inlet of the second three-way pipe, and an outlet of the second three-way pipe is communicated with an inlet of the water storage kettle; the heat management system further comprises a four-way valve, a connector A of the four-way valve is communicated with an oil path outlet of the water-cooled oil cooler, a connector B of the four-way valve is communicated with a lubricating oil inlet of the synthesis box, a connector C of the four-way valve is communicated with a lubricating oil outlet of the synthesis box, a connector D of the four-way valve is communicated with an oil path inlet of the water-cooled oil cooler, a water path inlet of the water-cooled oil cooler is communicated with a cooling liquid outlet of the motor controller, and a water path outlet of the water-cooled oil cooler is communicated with a.

Preferably, the heat management system further comprises a second electronic water pump connected between the first electronic water pump and the first three-way pipe, a coolant inlet of the second electronic water pump is communicated with a coolant outlet of the first electronic water pump, and a coolant outlet of the second electronic water pump is communicated with an inlet of the first three-way pipe.

Preferably, the four-way valve has two working modes; the first working mode is as follows: the interface A of the four-way valve is communicated with the interface B, and the interface C is communicated with the interface D; the second working mode is as follows: the interface A of the four-way valve is communicated with the interface D, and the interface C is communicated with the interface B.

The utility model discloses a low temperature radiator had both satisfied the heat dissipation demand of water-cooling intercooler, machine controller, and the cooperation cross valve has also satisfied the heat dissipation demand of synthetic case to reduce front end cooling module's whole thickness, and furthest's performance each part of system's function has reduced the system consumption.

Drawings

Fig. 1 is a schematic diagram of a thermal management system of a hybrid vehicle according to the embodiment.

Detailed Description

The thermal management system of the hybrid electric vehicle shown in fig. 1 comprises a water storage pot 1, a low-temperature radiator 2, a first electronic water pump 3, a second electronic water pump 4, a first three-way pipe 5, a water-cooled intercooler 6, a second three-way pipe 7, a motor controller 8, a water-cooled oil cooler 9, a four-way valve 10 and a synthesis box 11. The water storage pot 1, the low-temperature radiator 2, the first electronic water pump 3, the first three-way pipe 5, the water-cooling intercooler 6, the second three-way pipe 7, the motor controller 8 and the water-cooling oil cooler 9 form a water-cooling branch, and the water-cooling oil cooler 9, the four-way valve 10 and the synthesis box 11 form an oil-cooling branch. The outlet of the water storage kettle 1 is communicated with the cooling liquid inlet of the low-temperature radiator 2, the cooling liquid outlet of the low-temperature radiator 2 is communicated with the cooling liquid inlet of the first electronic water pump 3, the cooling liquid outlet of the first electronic water pump 3 is communicated with the cooling liquid inlet of the second electronic water pump 4, the cooling liquid outlet of the second electronic water pump 4 is communicated with the inlet of the first three-way pipe 5, the first outlet of the first three-way pipe 5 is communicated with the cooling liquid inlet of the water-cooled intercooler 6, the second outlet of the first three-way pipe 5 is communicated with the cooling liquid inlet of the motor controller 8, the cooling liquid outlet of the water-cooled intercooler 6 is communicated with the first inlet of the second three-way pipe 7, the cooling liquid outlet of the motor controller 8 is communicated with the water channel inlet of the water-cooled oil cooler 9, the water channel outlet of the water-cooled oil cooler 9 is communicated with the second inlet of the second three-way pipe 7, the outlet of the second three-way pipe, a connector A of the four-way valve 10 is communicated with an oil path outlet of the water-cooled oil cooler 9, a connector B of the four-way valve 10 is communicated with a lubricating oil inlet of the synthesis box 11, a connector C of the four-way valve 10 is communicated with a lubricating oil outlet of the synthesis box 11, and a connector D of the four-way valve 10 is communicated with an oil path inlet of the water-cooled oil cooler 9. The four-way valve 10 has two working modes; the first working mode is as follows: the interface A of the four-way valve 10 is communicated with the interface B, and the interface C is communicated with the interface D; the second working mode is as follows: the interface A of the four-way valve 10 is communicated with the interface D, and the interface C is communicated with the interface B.

When the oil temperature in the synthesis tank 11 does not reach the set target value (i.e. when the synthesis tank 11 does not need to be cooled), the interface a of the four-way valve 10 is communicated with the interface D, the interface C is communicated with the interface B, and the lubricating oil directly returns to the synthesis tank 11 through the interface C and the interface B without passing through the water-cooled oil cooler 9; meanwhile, the first electronic water pump 3 rotates, the second electronic water pump 4 does not rotate, the cooling liquid in the water storage kettle 1 flows through the low-temperature radiator 2, the first electronic water pump 3, the second electronic water pump 4 and the first three-way pipe 5 and branches into the water-cooled intercooler 6 and the motor controller 8 to dissipate heat of the water-cooled intercooler 6 and the motor controller 8, the cooling liquid flowing out of the water-cooled intercooler 6 returns to the water storage kettle 1 through the second three-way pipe 7, and the cooling liquid flowing out of the motor controller 8 returns to the water storage kettle 1 through the water-cooled oil cooler 9 and the second three-way pipe 7; therefore, at low temperature, the viscosity of the lubricating oil is reduced as much as possible, the working friction resistance of the synthesis box is reduced, and the oil consumption is reduced.

When the oil temperature in the synthesis tank 11 reaches a set target value (i.e. when the synthesis tank 11 needs to be cooled), the interface a of the four-way valve is communicated with the interface B, the interface C is communicated with the interface D, the lubricating oil in the synthesis tank 11 enters the water-cooled oil cooler 9 through the interfaces C and D for cooling, and the cooled lubricating oil returns to the synthesis tank 11 through the interfaces a and B; meanwhile, the first electronic water pump 3 and the second electronic water pump 4 both rotate, the cooling liquid in the water storage kettle 1 flows through the low-temperature radiator 2, the first electronic water pump 3, the second electronic water pump 4 and the first three-way pipe 5, one part of the cooling liquid branches into the water-cooled intercooler 6 to dissipate heat of the water-cooled intercooler 6, the other part of the cooling liquid branches into the motor controller 8 to flow into the water-cooled oil cooler 9 to dissipate heat of the motor controller 8 and the water-cooled oil cooler 9, the cooling liquid flowing out of the water-cooled intercooler 6 returns to the water storage kettle 1 through the second three-way pipe 7, and the cooling liquid flowing out of the water-cooled oil cooler 9 returns to the water storage kettle 1 through the second three-way pipe 7.

Claims (3)

1. A thermal management system of a hybrid electric vehicle comprises a water storage pot (1), a low-temperature radiator (2), a first electronic water pump (3), a first three-way pipe (5), a water-cooling intercooler (6), a second three-way pipe (7), a motor controller (8), a water-cooling oil cooler (9) and a synthesis box (11); an outlet of the water storage kettle (1) is communicated with a cooling liquid inlet of the low-temperature radiator (2), a cooling liquid outlet of the low-temperature radiator (2) is communicated with a cooling liquid inlet of the first electronic water pump (3), a cooling liquid outlet of the first electronic water pump (3) is communicated with an inlet of the first three-way pipe (5), a first outlet of the first three-way pipe (5) is communicated with a cooling liquid inlet of the water-cooled intercooler (6), a second outlet of the first three-way pipe is communicated with a cooling liquid inlet of the motor controller (8), a cooling liquid outlet of the water-cooled intercooler (6) is communicated with a first inlet of the second three-way pipe (7), and an outlet of the second three-way pipe (7) is communicated with an inlet of the water storage kettle (1); the method is characterized in that: the cooling system is characterized by further comprising a four-way valve (10), a connector A of the four-way valve (10) is communicated with an oil path outlet of a water-cooling oil cooler (9), a connector B of the four-way valve (10) is communicated with a lubricating oil inlet of a synthesis box (11), a connector C of the four-way valve (10) is communicated with a lubricating oil outlet of the synthesis box (11), a connector D of the four-way valve (10) is communicated with an oil path inlet of the water-cooling oil cooler (9), a water path inlet of the water-cooling oil cooler (9) is communicated with a cooling liquid outlet of a motor controller (8), and a water path outlet of the water-cooling oil cooler (9) is communicated with a second inlet of.

2. The thermal management system for a hybrid vehicle according to claim 1, characterized in that: the cooling system is characterized by further comprising a second electronic water pump (4) connected between the first electronic water pump (3) and the first three-way pipe (5), a cooling liquid inlet of the second electronic water pump (4) is communicated with a cooling liquid outlet of the first electronic water pump (3), and a cooling liquid outlet of the second electronic water pump (4) is communicated with an inlet of the first three-way pipe (5).

3. The thermal management system for a hybrid vehicle according to claim 1 or 2, characterized in that: the four-way valve (10) has two working modes; the first working mode is as follows: a port A of the four-way valve (10) is communicated with a port B, and a port C is communicated with a port D; the second working mode is as follows: the interface A of the four-way valve (10) is communicated with the interface D, and the interface C is communicated with the interface B.

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