Cooling device for new energy vehicles

Abstract

The present invention provides a cooling device for a new energy vehicle, comprising a water pump, a radiator, a motor cooling component, a motor controller cooling component, a fan, a hydraulic motor, a solenoid valve, a motor temperature sensor, a controller, a power element, and a motor controller temperature sensor; the hydraulic motor is connected to the fan by transmission, the power element is connected to the hydraulic motor by transmission through the solenoid valve, the motor temperature sensor is arranged in the motor cooling component, and the solenoid valve and the motor temperature sensor are both electrically connected to the controller signal; when in use, the controller controls the on-off of the solenoid valve according to the temperature signal detected by the motor temperature sensor and / or the motor controller temperature sensor, thereby correspondingly controlling the start and stop of the hydraulic motor and the fan. The present invention adopts different cooling means according to different road conditions when working through the design of the overall structure, thereby greatly reducing the energy consumed by the cooling device of the new energy vehicle when working, and improving the cruising range of the new energy vehicle.

Description

Technical Field

[0001] The present invention relates to the field of new energy vehicles, and in particular to a cooling device for a new energy vehicle. Background Art

[0002] The cooling device of new energy vehicles is one of the core components of new energy vehicles. The motor of new energy vehicles is composed of an iron core and a winding coil. When the motor is powered on, heat will be generated inside the motor. If the motor is not effectively cooled, the internal temperature of the motor will continue to rise. Excessive temperature will cause the internal coil of the motor to burn or even cause the coil to short-circuit and damage the motor. The function of the motor controller is to invert the DC power of the battery into AC power to drive the motor. If the motor controller is not effectively cooled, the output power of the motor will also be reduced. Therefore, new energy vehicles need to cool the motor controller and the inside of the motor.

[0003] like Figure 1 , Figure 3 and Figure 7 As shown, the existing new energy vehicle cooling device includes a water pump 1, a radiator 2, a motor cooling component 3 and a motor controller cooling component 4. The water inlet of the water pump 1 is connected to the water outlet of the radiator 2, and the water outlet of the water pump 1 is connected to the motor controller cooling component 4; the motor controller cooling component 4 is connected to the motor cooling component 3; the water outlet of the motor cooling component 3 is connected to the water inlet of the radiator 2. The radiator 2 is arranged at the front of the vehicle, and the hot water in the radiator 2 is cooled by natural wind. When the new energy vehicle is driving on a flat road, the driving resistance is small, and the heat generated by the motor and the motor controller is small; when the new energy vehicle is driving on an uphill road, the driving resistance is large, and the heat generated by the motor and the motor controller is large, and the cooling strength needs to be increased. The cooling device of new energy vehicles in the prior art cannot adopt different cooling methods according to the heating conditions of the motor and the motor controller under different working conditions. In this way, the flow rate of the water pump and the heat dissipation area of ​​the radiator can only be designed according to the working conditions where the motor and the motor controller generate a lot of heat, that is, designed according to the working conditions of the new energy vehicle driving on an uphill road. This design will cause the cooling device of the new energy vehicle to consume too much energy, thereby greatly affecting the cruising range of the new energy vehicle. Summary of the invention

[0004] The purpose of the present invention is to provide a cooling device for new energy vehicles that can adopt different cooling methods according to the heating conditions of the motor and the motor controller under different working conditions in order to solve the problems existing in the prior art. By using this device, the energy consumed by the existing cooling device of new energy vehicles during operation can be reduced, thereby improving the cruising range of new energy vehicles.

[0005] The technical solution of the present invention is: the cooling device of the new energy vehicle of the present invention comprises a water pump, a radiator, a motor cooling component and a motor controller cooling component respectively provided with a water inlet and a water outlet; the water inlet of the water pump is communicated with the water outlet of the radiator, the water outlet of the water pump is communicated with the water inlet of the motor controller cooling component; the water outlet of the motor controller cooling component is communicated with the water inlet of the motor cooling component; the water outlet of the motor cooling component is communicated with the water inlet of the radiator; its structural features are:

[0006] It also includes a fan, a hydraulic motor, a solenoid valve, a motor temperature sensor, a controller and a power element; the above-mentioned fan and hydraulic motor are fixedly arranged on the frame of the new energy vehicle, and the fan is arranged on the inner side next to the radiator in a manner facing the radiator; the hydraulic motor is connected to the fan in a transmission manner, the above-mentioned motor temperature sensor is arranged in the motor cooling component, and the above-mentioned solenoid valve, controller and power element are arranged on the body of the new energy vehicle; the power element is connected to the hydraulic motor in a transmission manner through the solenoid valve; the solenoid valve and the motor temperature sensor are both electrically connected to the controller signal; the above-mentioned controller controls the on and off of the solenoid valve according to the temperature signal detected by the motor temperature sensor, thereby correspondingly controlling the start and stop of the hydraulic motor and the fan.

[0007] A further solution is: it also includes a motor controller temperature sensor; the motor controller temperature sensor is arranged in the motor controller cooling component, and the motor controller temperature sensor is electrically connected to the controller signal; the controller can also control the on and off of the solenoid valve according to the temperature signal detected by the motor controller temperature sensor, thereby correspondingly controlling the start and stop of the hydraulic motor and the fan.

[0008] A further solution is: the above-mentioned motor cooling component includes a motor inner shell and a motor outer shell; the above-mentioned motor inner shell and the motor outer shell are coaxially arranged and the outer peripheral surface of the motor inner shell matches the inner wall of the motor outer shell; the above-mentioned motor inner shell is provided with an inner shell water inlet, an inner shell water outlet and a cooling water channel, and the cooling water channel is connected with the inner shell water inlet and the inner shell water outlet; the above-mentioned motor outer shell is provided with an outer shell water inlet and an outer shell water outlet; the above-mentioned outer shell water inlet is connected with the inner shell water inlet; the above-mentioned outer shell water outlet is connected with the inner shell water outlet; the above-mentioned motor controller cooling component is connected with the outer shell water inlet of the motor cooling component; the outer shell water outlet of the above-mentioned motor cooling component is connected with the water inlet of the radiator.

[0009] A further solution is that the cooling water channel of the motor inner shell is an annular channel arranged at the peripheral portion of the motor inner shell.

[0010] A further solution is that heat dissipation ribs are provided in the cooling water channel of the inner shell of the motor.

[0011] A further solution is: the above-mentioned motor controller cooling component includes a heat sink and a heat sink cover; the above-mentioned heat sink is fixedly connected to the heat sink cover, one end of the heat sink is provided with a motor controller water inlet, a motor controller water outlet and a motor controller cooling water channel, the motor controller cooling water channel is connected with the motor controller water inlet and the motor controller water outlet; the water outlet of the water pump is connected with the motor controller water inlet of the motor controller cooling component; the motor controller water outlet of the motor controller cooling component is connected with the outer shell water inlet of the motor cooling component.

[0012] A further solution is that the cooling water channel of the motor controller is in a multi-layered wave shape.

[0013] A further solution is that: a motor controller heat dissipation rib is arranged in the cooling water channel of the motor controller.

[0014] A further solution is that the power element is an accumulator.

[0015] A further solution is that the power element is a hydraulic pump.

[0016] The present invention has positive effects: the cooling device for new energy vehicles of the present invention can adopt different cooling means according to the heating conditions of the motor and the motor controller of the new energy vehicle under different working conditions (such as flat road driving and uphill driving) through the design of the overall structure during operation. Therefore, the flow rate of the water pump and the heat dissipation area of ​​the radiator of the new energy vehicle only need to be designed according to the working conditions (flat road driving) where the heating of the motor and the motor controller is small, that is, designed according to the working conditions when the new energy vehicle is driving on a flat road, thereby greatly reducing the energy consumed by the cooling device of the new energy vehicle during operation and improving the cruising range of the new energy vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the connection principle of the hydraulic motor, solenoid valve, motor temperature sensor, controller, power element and motor controller temperature sensor of the present invention;

[0019] Figure 3 It is a connection diagram of the motor controller cooling component, the motor controller and the motor controller box of the present invention;

[0020] Figure 4 for Figure 3 A schematic diagram of the structure of the heat sink in FIG.

[0021] Figure 5 for Figure 4 Schematic diagram of the left side;

[0022] Figure 6 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0023] Figure 7 The figure is a schematic diagram of the connection between the motor cooling component and the motor stator of the present invention, and also shows the installation relationship between the motor temperature sensor and the motor stator;

[0024] Figure 8 for Figure 7 Schematic diagram of the structure of the inner shell of the motor;

[0025] Fig. 9 for Figure 7 Schematic diagram of the structure of the motor housing.

[0026] The reference numerals in the above drawings are as follows:

[0027] Water pump 1, radiator 2;

[0028] Motor cooling component 3, motor inner shell 31, inner shell water inlet 31-1, inner shell water outlet 31-2, cooling water channel 31-3, heat dissipation ribs 31-4, motor shell 32;

[0029] Motor controller cooling component 4, heat sink 41, motor controller water inlet 41-1, motor controller water outlet 41-2, motor controller cooling water channel 41-3, heat sink cover 42;

[0030] Fan 5, hydraulic motor 6, solenoid valve 7, motor temperature sensor 8, controller 9, power element 10, motor controller temperature sensor 11; motor controller 12. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] (Example 1)

[0033] See Figure 1 and Figure 2 The cooling device of the new energy vehicle of this embodiment is mainly composed of a water pump 1, a radiator 2, a motor cooling component 3, a motor controller cooling component 4, a fan 5, a hydraulic motor 6, a solenoid valve 7, a motor temperature sensor 8, a controller 9 and a power element 10.

[0034] The water pump 1, the radiator 2, the motor cooling component 3 and the motor controller cooling component 4 are respectively provided with a water inlet and a water outlet. The water inlet of the water pump 1 is connected to the water outlet of the radiator 2, and the water outlet of the water pump 1 is connected to the water inlet of the motor controller cooling component 4; the water outlet of the motor controller cooling component 4 is connected to the water inlet of the motor cooling component 3; and the water outlet of the motor cooling component 3 is connected to the water inlet of the radiator 2. This part is the prior art and will not be described in detail.

[0035] The fan 5 and the hydraulic motor 6 are both fixedly arranged on the frame of the new energy vehicle, and the fan 5 is arranged on the inner side next to the radiator 2 in a manner facing the radiator 2; the hydraulic motor 6 is transmission-connected to the fan 5, and the motor temperature sensor 8 is arranged in the motor cooling component 3; the solenoid valve 7, the controller 9 and the power element 10 are arranged on the body of the new energy vehicle; the power element 10 is transmission-connected to the hydraulic motor 6 through the solenoid valve 7; the solenoid valve 7 and the motor temperature sensor 8 are both electrically connected to the controller 9 for signals; the controller 9 controls the on and off of the solenoid valve 7 according to the temperature signal detected by the motor temperature sensor 8, thereby correspondingly controlling the start and stop of the hydraulic motor 6 and the fan 5.

[0036] As a preferred embodiment, the cooling device of the new energy vehicle of this embodiment further includes a motor controller temperature sensor 11 ; the motor controller temperature sensor 11 is electrically connected to the controller 9 by signals.

[0037] The controller 9 has built-in motor temperature judgment thresholds and motor controller temperature judgment thresholds. During operation, when the motor temperature detected by the motor temperature sensor 8 and / or the temperature of the motor controller detected by the motor controller temperature sensor 11 reaches the set threshold, the controller 9 controls the solenoid valve 7 to turn on, the power element 10 starts the hydraulic motor 6, and thus starts the fan 5 to work for cooling.

[0038] The hydraulic motor 6 has an oil inlet; in this embodiment, the solenoid valve 7 adopts a flameproof reversing solenoid valve of model GDFW-03-2B11B-D24 / 50, such as Figure 2 The solenoid valve 7 has an oil inlet port P, an execution port B and a terminal K. The oil inlet of the hydraulic motor 6 is connected to the execution port B of the solenoid valve 7; the oil inlet port P of the solenoid valve 7 is connected to the power element 10; when the fan 5 does not need to be started, the oil inlet port P of the solenoid valve 7 is not connected to the execution port B. When the terminal K of the solenoid valve 7 is powered by the controller 9, the oil inlet port P of the solenoid valve 7 is connected to the execution port B, and the hydraulic motor 6 is started.

[0039] like Figures 7 to 9As shown, the motor cooling component 3 includes a motor inner shell 31 and a motor outer shell 32; the motor inner shell 31 and the motor outer shell 32 are coaxially arranged and the outer peripheral surface of the motor inner shell 31 matches the inner wall of the motor outer shell 32; the motor inner shell 31 is provided with an inner shell water inlet 31-1, an inner shell water outlet 31-2 and a cooling water channel 31-3, and the cooling water channel 31-3 is connected with the inner shell water inlet 31-1 and the inner shell water outlet 31-2; the motor outer shell 32 is provided with an outer shell water inlet 32-1 and an outer shell water outlet 32-2; the outer shell water inlet 32-1 is connected with the inner shell water inlet 31-1; the outer shell water outlet 32-2 is connected with the inner shell water outlet 31-2; the motor controller cooling component 4 is connected with the outer shell water inlet 32-1 of the motor cooling component 3; the outer shell water outlet 32-2 of the motor cooling component 3 is connected with the water inlet of the radiator 2.

[0040] As a preferred embodiment, the cooling water channel 31-3 is an annular channel arranged at the peripheral edge of the motor inner shell 31. This allows for more uniform heat dissipation.

[0041] As a further preferred embodiment, a heat dissipation rib 31 - 4 is provided in the cooling water channel 31 - 3 , so as to achieve a better heat dissipation effect.

[0042] like Figures 3 to 6 As shown, the motor controller cooling component 4 includes a heat sink 41 and a heat sink cover 42; one end of the heat sink 41 cooperates with the heat sink cover 42, and one end of the heat sink 41 is provided with a motor controller water inlet 41-1, a motor controller water outlet 41-2 and a motor controller cooling water channel 41-3, and the motor controller cooling water channel 41-3 is connected with the motor controller water inlet 41-1 and the motor controller water outlet 41-2; the water outlet of the water pump 1 is connected with the motor controller water inlet 41-1 of the motor controller cooling component 4; the motor controller water outlet 41-2 of the motor controller cooling component 4 is connected with the outer shell water inlet 32-1 of the motor cooling component 3.

[0043] As a preferred embodiment, the cooling water channel 41-3 of the motor controller is in a multi-layered wave shape, which can achieve a better heat dissipation effect.

[0044] As a further preferred embodiment, a motor controller heat dissipation rib 41 - 4 is provided in the motor controller cooling water channel 41 - 3 , so as to achieve a better heat dissipation effect.

[0045] The power element 10 may adopt an accumulator; the power element 10 may also adopt a hydraulic pump.

[0046] like Figure 3 and Figure 7As shown, when the present invention is used, one end of the motor controller cooling component 4 is connected to the motor controller 12, and the other end of the motor controller cooling component 4 is fixedly connected to the housing of the motor controller 12. The motor inner shell 31 of the motor cooling component 3 is sleeved on the outer peripheral surface of the motor stator. The motor temperature sensor 8 is in contact with the outer periphery of the motor stator; and the motor controller temperature sensor 11 is in contact with the motor controller.

[0047] The working principle of the present invention is briefly described as follows:

[0048] When the new energy vehicle is traveling on an uphill road, the driving resistance is relatively large, and the heat generated by the motor and the motor controller is relatively large. When the motor temperature detected by the motor temperature sensor 8 and / or the temperature of the motor controller detected by the motor controller temperature sensor 11 reaches the judgment threshold set in the controller 9, the controller 9 controls the connection of the solenoid valve 7, and the power element 10 starts the hydraulic motor 6, thereby starting the fan 5 to cool the hot water in the radiator 2 of the new energy vehicle by natural wind and the fan at the same time.

[0049] When the new energy vehicle is traveling on a flat road, the driving resistance is small, the heat generated by the motor and the controller is small, the motor temperature detected by the motor temperature sensor 8 and / or the temperature of the motor controller detected by the motor controller temperature sensor 11 cannot reach the judgment threshold set in the controller 9, the hydraulic motor 6 and the fan 5 are not started, and the hot water in the radiator 2 of the new energy vehicle is cooled by natural wind.

[0050] From the foregoing, it can be seen that the cooling device of the new energy vehicle of the present invention can adopt different cooling means according to the heating conditions of the motor and the motor controller under different working conditions. Therefore, the flow rate of the water pump and the heat dissipation area of ​​the radiator only need to be designed according to the working conditions when the motor and the motor controller generate little heat, that is, it is designed according to the working conditions when the new energy vehicle is driving on a flat road, thereby greatly reducing the energy consumed by the cooling device of the new energy vehicle when it is working and improving the cruising range of the new energy vehicle.

[0051] The above embodiments are descriptions of specific implementation methods of the present invention rather than limitations of the present invention. Technical personnel in the relevant technical field can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should be included in the patent protection scope of the present invention.

Claims

1. A cooling device for a new energy vehicle, comprising a water pump (1), a radiator (2), a motor cooling component (3) and a motor controller cooling component (4), each of which is provided with a water inlet and a water outlet respectively; the water inlet of the water pump (1) is communicated with the water outlet of the radiator (2), the water outlet of the water pump (1) is communicated with the water inlet of the motor controller cooling component (4); the water outlet of the motor controller cooling component (4) is communicated with the water inlet of the motor cooling component (3); the water outlet of the motor cooling component (3) is communicated with the water inlet of the radiator (2); the characteristics are: The vehicle further comprises a fan (5), a hydraulic motor (6), a solenoid valve (7), a motor temperature sensor (8), a controller (9) and a power element (10); the fan (5) and the hydraulic motor (6) are both fixedly arranged on a frame of the new energy vehicle, and the fan (5) is arranged on the inner side of the radiator (2) in a manner facing the radiator (2); the hydraulic motor (6) is transmission-connected to the fan (5); the motor temperature sensor (8) is arranged in a motor cooling component (3), and the solenoid valve (7), the controller (9) and the power element (10) are arranged on the body of the new energy vehicle; the power element (10) is transmission-connected to the hydraulic motor (6) via the solenoid valve (7); the solenoid valve (7) and the motor temperature sensor (8) are both signal-electrically connected to the controller (9); the controller (9) controls the on / off of the solenoid valve (7) according to the temperature signal detected by the motor temperature sensor (8), thereby correspondingly controlling the start and stop of the hydraulic motor (6) and the fan (5); It also includes a motor controller temperature sensor (11); the motor controller temperature sensor (11) is arranged in the motor controller cooling component (4), and the motor controller temperature sensor (11) is electrically connected to the controller (9) by signal; the controller (9) can also control the on and off of the solenoid valve (7) according to the temperature signal detected by the motor controller temperature sensor (11), thereby correspondingly controlling the start and stop of the hydraulic motor (6) and the fan (5); The motor cooling component (3) comprises a motor inner shell (31) and a motor outer shell (32); the motor inner shell (31) and the motor outer shell (32) are coaxially arranged, and the outer peripheral surface of the motor inner shell (31) matches the inner wall of the motor outer shell (32); the motor inner shell (31) is provided with an inner shell water inlet (31-1), an inner shell water outlet (31-2) and a cooling water channel (31-3), and the cooling water channel (31-3) is connected to the inner shell water inlet (31-1) and the inner shell water outlet (31-2). The motor housing (32) is provided with a housing water inlet (32-1) and a housing water outlet (32-2); the housing water inlet (32-1) is in communication with the inner housing water inlet (31-1); the housing water outlet (32-2) is in communication with the inner housing water outlet (31-2); the motor controller cooling component (4) is in communication with the housing water inlet (32-1) of the motor cooling component (3); the housing water outlet (32-2) of the motor cooling component (3) is in communication with the water inlet of the radiator (2); The cooling water channel (31-3) of the motor inner shell (31) is an annular channel arranged at the peripheral portion of the motor inner shell (31); The cooling water channel (31-3) of the motor inner shell (31) is provided with heat dissipation ribs (31-4); The motor controller cooling component (4) comprises a heat sink (41) and a heat sink cover (42); the heat sink (41) is fixedly connected to the heat sink cover (42); one end of the heat sink (41) is provided with a motor controller water inlet (41-1), a motor controller water outlet (41-2) and a motor controller cooling water channel (41-3); the motor controller cooling water channel (41-3) is communicated with both the motor controller water inlet (41-1) and the motor controller water outlet (41-2); the water outlet of the water pump (1) is communicated with the motor controller water inlet (41-1) of the motor controller cooling component (4); the motor controller water outlet (41-2) of the motor controller cooling component (4) is communicated with the housing water inlet (32-1) of the motor cooling component (3); The cooling water channel (41-3) of the motor controller is in a multi-layered wave shape; The motor controller cooling water channel (41-3) is provided with motor controller heat dissipation ribs (41-4).

2. The cooling device for new energy vehicles according to claim 1, characterized in that: The power element (10) is an accumulator.

3. The cooling device for new energy vehicles according to claim 1, characterized in that: The power element (10) is a hydraulic pump.

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