阅读说明：本技术 一种用于电动汽车的冷却系统 (Cooling system for electric automobile ) 是由 朱波 杜如海 夏应琪 于 2019-09-12 设计创作，主要内容包括：本发明涉及一种用于电动汽车的冷却系统,当汽车行驶速度小于30km/h时,电机运转,带动散热器扇叶和水泵转动；当汽车行驶速度大于或等于30km/h时,电机停转,通过汽车进气格栅进入的行驶风驱动扇叶转动,并带动水泵转动,水泵开始工作。由水泵泵出得冷却液依次流经驱动电机控制器水套、驱动电机水套、散热器和补偿水箱,实现驱动电机控制器和驱动电机散热效果。本发明所述的一种用于电动汽车的冷却系统,根据车速控制水泵的动力来源,降低了电池能量损耗,充分利用了不利于汽车行驶时的阻力风,增加了纯电动汽车的续航里程。(The invention relates to a cooling system for an electric automobile, wherein when the running speed of the automobile is less than 30km/h, a motor runs to drive fan blades of a radiator and a water pump to rotate; when the running speed of the automobile is greater than or equal to 30km/h, the motor stops running, the fan blades are driven to rotate by running wind entering through the automobile air inlet grille, the water pump is driven to rotate, and the water pump starts to work. The cooling liquid pumped by the water pump flows through the water jacket of the driving motor controller, the water jacket of the driving motor, the radiator and the compensation water tank in sequence, and the heat dissipation effect of the driving motor controller and the driving motor is achieved. According to the cooling system for the electric automobile, the power source of the water pump is controlled according to the speed of the automobile, the energy loss of the battery is reduced, the resistance wind which is not beneficial to the driving of the automobile is fully utilized, and the endurance mileage of the pure electric automobile is increased.)

1. The utility model provides a cooling system for electric automobile, includes radiator (1), water pump (5), driving motor controller water jacket (7), driving motor water jacket (8), compensating tank (12) and motor (6), wherein radiator (1), compensating tank (12), water pump (5), driving motor controller water jacket (7) and driving motor water jacket (8) utilize the hose to establish ties in proper order and form the water cooling circuit, and the lateral surface of radiator (1) corresponds electric automobile's air-inlet grille, its characterized in that:

A fan blade mechanism is arranged corresponding to the inner side surface of the radiator (1), the fan blade mechanism comprises more than two fan blades (2) and a transmission shaft (3), the more than two fan blades (2) are arranged at one end of the transmission shaft (3), and the other end of the transmission shaft (3) is connected with a driving shaft of a water pump (5); the motor (6) is connected with the transmission shaft (3) through a gear transmission pair;

When the running speed of the electric automobile is less than 30km/h, the motor (6) runs to drive the fan blades (2) and the water pump (5) to rotate, and the cooling system is driven by the motor (6) to run; when the running speed of the automobile is greater than or equal to 30km/h, the motor (6) stops running, running wind entering through an air inlet grille of the electric automobile drives the fan blade mechanism to rotate and drives the water pump (5) to rotate, and the cooling system is driven by the running wind to run.

2. The cooling system for an electric vehicle according to claim 1, characterized in that: the water pump (5) is a vane pump, and an impeller shaft (13) of the water pump (5) is communicated with the other end of the transmission shaft (3) through a coupler (10).

3. the cooling system for an electric vehicle according to claim 1, characterized in that: the gear transmission pair consists of a first bevel gear (4) and a second bevel gear (9), the first bevel gear (4) is fixedly arranged on the transmission shaft (3) through a one-way clutch (11), and the second bevel gear (9) is arranged on an output shaft of the motor (6).

4. a cooling system for an electric vehicle according to claim 3, characterized in that: the transmission ratio of the first bevel gear (4) to the second bevel gear (9) is 3.

5. the cooling system for an electric vehicle according to claim 1, characterized in that: the motor (6) is a 12V direct current motor and is directly powered by a vehicle-mounted storage battery.

Technical Field

The invention belongs to the technical field of heat dissipation of a driving motor and a driving motor controller of an electric automobile, and particularly relates to a cooling system of a pure electric automobile with a wind-driven water pump.

Background

at present, the energy density of the power battery is vigorously researched and the reduction of the energy consumption of the power battery by electric automobile parts is actively researched.

The electric automobile on the market adopts permanent magnetism type motor more, and the high temperature can harm motor life-span and working property when the motor is worked, simultaneously for avoiding electric automobile driving motor controller to reduce whole car control performance and spontaneous combustion phenomenon because of high temperature, driving motor and driving motor controller's cooling system is indispensable, and the indirect power battery power supply of water pump among the cooling system drives, inevitably consumed a large amount of energy.

When the electric automobile runs at a high speed, wind resistance is the largest factor consuming battery energy, and the air quantity entering the automobile through the air inlet grille is a negative factor for the electric automobile, so that the running resistance of the automobile is directly increased. At present, how to reduce the energy loss of a water pump to a battery and fully utilize wind energy entering an automobile through an air inlet grille is a difficult problem of directly and indirectly increasing the endurance mileage of a power battery.

disclosure of Invention

In order to reduce the energy loss of the water pump to the battery, fully utilize the resistance wind entering the automobile through the air inlet grille and increase the endurance mileage of the power battery of the electric automobile, the invention provides the cooling system of the wind-driven water pump for the electric automobile.

The utility model provides a cooling system for electric automobile includes radiator 1, water pump 5, driving motor controller water jacket 7, driving motor water jacket 8, compensating water tank 12 and motor 6, wherein radiator 1, compensating water tank 12, water pump 5, driving motor controller water jacket 7 and driving motor water jacket 8 utilize the hose to establish ties in proper order and form the water cooling circuit, and the lateral surface of radiator 1 corresponds the air-inlet grille of electric automobile, its characterized in that:

A fan blade mechanism is arranged corresponding to the inner side surface of the radiator 1, the fan blade mechanism comprises more than two fan blades 2 and a transmission shaft 3, the more than two fan blades 2 are arranged at one end of the transmission shaft 3, and the other end of the transmission shaft 3 is connected with a driving shaft of a water pump 5; the motor 6 is connected with the transmission shaft 3 through a gear transmission pair;

When the running speed of the electric automobile is less than 30km/h, the motor 6 runs to drive the fan blades 2 and the water pump 5 to rotate, and the cooling system is driven by the motor 6 to run; when the running speed of the automobile is greater than or equal to 30km/h, the motor 6 stops running, running wind entering through an air inlet grille of the electric automobile drives the fan blade mechanism to rotate and drives the water pump 5 to rotate, and the cooling system is driven by the running wind to run.

The technical scheme for further limiting is as follows:

The water pump 5 is a vane pump, and an impeller shaft 13 of the water pump 5 is communicated with the other end of the transmission shaft 3 through a coupler 10.

the gear transmission pair consists of a first bevel gear 4 and a second bevel gear 9, the first bevel gear 4 is fixedly arranged on the transmission shaft 3 through a one-way clutch 11, and the second bevel gear 9 is arranged on an output shaft of the motor 6.

The transmission ratio of the first bevel gear 4 and the second bevel gear 9 is 3.

The motor 6 is a 12V direct current motor and is directly powered by a vehicle-mounted storage battery.

The beneficial technical effects of the invention are embodied in the following aspects:

1. the water pump driving power of an electric automobile in the current market is about 50W, and when a pure electric automobile cooling system works, the electric energy consumption of the water pump 50W needs to be continuously ensured; when the running speed of the electric automobile adopting the cooling system is greater than or equal to 30km/h, the water pump is driven by wind energy, 50W of energy output can be saved, and the theoretical endurance mileage can be improved by 4% at most compared with the prior art.

2. In the prior automobile technology, the running wind inevitably enters the front end of the automobile from the air inlet grille, and the wind is one of the resistances in the running process of the automobile; when the running speed of the electric automobile adopting the cooling system is greater than or equal to 30km/h, the fan blades and the water pump are driven by wind entering the air inlet grille, the highest utilization rate of wind energy can reach 70 percent according to energy conservation, the wind energy entering the automobile through the air inlet grille is fully utilized, new renewable energy is actively developed and utilized, and technical support is provided for developing and applying a multi-energy technology in the automobile field.

3. The invention provides good temperature control for the automobile driving motor and the driving motor controller, and the effect is not inferior to the traditional cooling design.

Drawings

FIG. 1 is a schematic diagram of the principles of the present invention;

FIG. 2 is a schematic view of the mechanical structure of the present invention;

Sequence numbers in the upper figure: the device comprises a radiator 1, fan blades 2, a transmission shaft 3, a first bevel gear 4, a water pump 5, a motor 6, a driving motor controller water jacket 7, a driving motor water jacket 8, a second bevel gear 9, a coupler 10, a one-way clutch 11, a compensation water tank 12 and an impeller shaft 13.

Detailed description of the invention

The invention will be further explained by the embodiments with reference to the drawings.