CN206703855U - Wheel hub motor thermoelectric power supply system - Google Patents

Abstract

A thermoelectric power supply system for a hub motor comprises the hub motor, a wheel, a parameter sensing assembly and a thermoelectric conversion element. The hub motor includes a motor stator and a motor rotor. The motor rotor is rotatably connected to the motor stator and is driven by the hub motor to generate heat energy. The wheel is sleeved on the motor rotor. The parameter sensing assembly is arranged on the wheel to sense a wheel parameter of the wheel. The thermoelectric conversion element is electrically connected to the parameter sensing assembly and comprises a first thermoelectric conversion action part and a second thermoelectric conversion action part opposite to the first thermoelectric conversion action part. The second thermoelectric conversion action part is thermally connected with the motor rotor to absorb heat energy and generate temperature difference with the first thermoelectric conversion action part, so that electric energy is generated and the thermoelectric conversion element supplies the electric energy to the parameter sensing assembly.

Description

Wheel hub motor thermoelectric power supply system

technical field

The utility model relates to a thermoelectric power supply system, in particular to a thermoelectric power supply system for a wheel hub motor that uses heat energy generated by a wheel hub motor of an electric vehicle to make a thermoelectric conversion element generate electric energy.

Background technique

Since the industrial revolution, technology has developed rapidly. The power source used by people evolved from the earliest animal power to the steam engine in the 18th century. Then, it evolved from a steam engine to a diesel engine in the 19th century. In modern times, while promoting the development of science and technology, human beings also pay great attention to the issue of environmental protection. Because the exhaust gas generated by the engine burning diesel or gasoline will cause considerable damage to the environment of the earth, people have begun to develop electric vehicles with electricity as the power source.

The power source of the electric vehicle comes from the electric energy provided by the battery, and the electric energy will make the hub motor connected to the wheel rotate, so as to make the wheel rotate and make the electric vehicle drive on the road. When the battery is out of power, you only need to connect the battery to a power source for charging. After the battery is fully charged, it can continue to supply electric energy to drive the hub motor.

In addition, in order to ensure the driving safety of drivers when driving vehicles, people will install tire pressure detectors on tires. The tire pressure detector will continuously transmit the current air pressure data in the tire to a display device in the car, so that the driver can know the current tire pressure value. Since the tire pressure detector needs electric energy to detect the tire pressure of the tire and transmit the gas pressure data in the tire to the display device, it is necessary to add a battery to the wheel to supply the electric energy required by the tire pressure detector.

Because the tire pressure detector consumes a lot of power, it is necessary to replace the battery that supplies the power of the tire pressure detector from time to time. However, the tire pressure detector is installed in the tire, so the user cannot replace the battery that supplies the power of the tire pressure detector by himself, and has to go to a repair shop to replace the battery that supplies the power of the tire pressure detector. Therefore, it is very inconvenient for the user, not only need to spend extra time to replace the battery at the garage, but also need to pay additional costs for replacing the battery.

Utility model content

In view of the fact that in the prior art, it takes extra time to go to the repair shop to replace the battery that supplies the power of the tire pressure detector, and it also needs to pay for the additional cost of replacing the battery, the purpose of this utility model is to provide a hub motor thermoelectric The power supply system can continuously supply power through the thermoelectric conversion element when the hub motor is operating, so that the power required by the parameter sensing component does not need to be powered by a battery.

In order to achieve the above purpose, the utility model provides a hub motor thermoelectric power supply system, which includes:

Hub motor, including:

a motor stator connected to an electric vehicle body; and

a motor rotor that generates heat when the hub motor is driven, rotatably connected to the motor stator;

a wheel sleeved on the motor rotor;

a parameter sensing assembly for sensing at least one wheel parameter of the wheel, disposed on the wheel; and

A thermoelectric conversion element is electrically connected to the parameter sensing component, and includes:

a first thermoelectric conversion unit; and

a second thermoelectric conversion part for absorbing the heat energy and generating a temperature difference with the first thermoelectric conversion part, thereby generating an electric energy so that the thermoelectric conversion element supplies the electric energy to the parameter sensing element, relative to the first thermoelectric conversion part A thermoelectric conversion unit is thermally connected to the motor rotor.

The hub motor thermoelectric power supply system above, wherein the motor stator is connected to the electric vehicle body along a stator axial direction, the motor rotor is rotatably connected to the motor stator facing away from the stator axial direction, and has a The axial rotor back shaft surface, the second thermoelectric conversion part is connected to the rotor back shaft surface.

In the above thermoelectric power supply system for in-wheel motors, the wheel defines a thermoelectric conversion element cooling port which communicates with the first thermoelectric conversion part.

The above-mentioned hub motor thermoelectric power supply system further includes at least one heat dissipation element for cooling the first thermoelectric conversion part, and the at least one heat dissipation element is thermally connected to the first thermoelectric conversion part.

In the aforementioned hub motor thermoelectric power supply system, the at least one heat dissipation element is at least one heat dissipation fin.

In the above-mentioned in-wheel motor thermoelectric power supply system, wherein the wheel has an inner tire space for accommodating a tire gas, the parameter sensing component includes a tire pressure sensing element, and the tire pressure sensing element is at least partially arranged in the inner tire space, The at least one wheel parameter includes an air pressure parameter in the tire.

In the aforementioned in-wheel motor thermoelectric power supply system, wherein the parameter sensing component includes a tire temperature sensing element, the tire temperature sensing element is arranged on the wheel, and the at least one wheel parameter includes a tire temperature parameter.

In the above thermoelectric power supply system for in-wheel motors, wherein the parameter sensing component includes a wheel vibration sensing element, the wheel vibration sensing element is arranged on the wheel, and the at least one wheel parameter includes a vibration parameter.

In the above thermoelectric power supply system for in-wheel motors, the parameter sensing component includes an electrical storage element for storing the electric energy generated by the thermoelectric conversion element, and the electrical storage element is electrically connected to the thermoelectric conversion element.

In the above thermoelectric power supply system for in-wheel motors, the power storage element is one of a battery and a capacitor.

In the aforementioned in-wheel motor thermoelectric power supply system, wherein the parameter sensing component includes a parameter wireless transmission element for transmitting the at least one wheel parameter, the in-wheel motor thermoelectric power supply system further includes an electronic device, and the parameter wireless transmission element is communicatively connected to the electronic device.

Based on the above, the hub motor thermoelectric power supply system provided by the present invention has a thermoelectric conversion element disposed on the motor stator. When the in-wheel motor operates, the second thermoelectric conversion part of the thermoelectric conversion element is heated to generate a temperature difference with the first thermoelectric conversion part, thereby generating electric energy. The thermoelectric conversion element supplies electric energy to the parameter sensing component, and makes the parameter sensing component generate wheel parameters. Thereby, the wheel hub motor thermoelectric power supply system provided by the utility model can achieve energy recovery and utilization.

Compared with the prior art, the hub motor thermoelectric power supply system provided by the utility model can continuously supply power through the thermoelectric conversion element when the hub motor is in operation, and thus does not need to provide power supply required by the parameter sensing components by means of battery power. electricity. Thereby, the prior art avoids the problem that it takes extra time to go to a repair shop to replace the battery supplying the electric energy of the tire pressure detector, and also needs to pay the extra cost for replacing the battery.

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the utility model.

Description of drawings

Fig. 1 shows the exploded schematic view of the hub motor thermoelectric power supply system provided by the preferred embodiment of the present invention;

Fig. 2 shows the schematic diagram of the hub motor thermoelectric power supply system provided by the preferred embodiment of the present invention;

Fig. 3 shows the A-A sectional schematic diagram of the wheel hub motor thermoelectric power supply system provided by the preferred embodiment of the present invention; and

Fig. 4 shows a schematic block diagram of the hub motor thermoelectric power supply system provided by the preferred embodiment of the present invention.

Among them, reference signs

100 hub motor thermoelectric power supply system

1 hub motor

11 Motor stator

111 Stator shaft

12 Motor rotor

121 Rotor back shaft surface

2 wheels

21 wheels

211 rim

2111 outer ring surface of rim

2112 Inner ring surface of rim

212 spokes

2121 Thermoelectric conversion element cooling port

22 tires

3 parameter sensing components

31 Tire pressure sensing element

32 Tire temperature sensing element

33 Wheel vibration sensing element

34 parameter wireless transmission components

35 storage element

4 thermoelectric conversion element

41 First thermoelectric conversion unit

42 Second thermoelectric conversion unit

5 heat sink

6 electronics

200 Electric vehicle body

D wheel parameters

D1 Inner tire gas pressure parameters

D2 tire temperature parameters

D3 Vibration parameters

E stator axial

P1, P2 electric energy

S1 rotor setting space

S2 tire space

detailed description

Below in conjunction with accompanying drawing, structural principle and working principle of the present utility model are specifically described:

Please refer to Fig. 1 to Fig. 4 together, Fig. 1 shows the disassembled diagram of the hub motor thermoelectric power supply system provided by the preferred embodiment of the utility model; Fig. 2 shows the hub motor thermoelectric power supply system provided by the preferred embodiment of the utility model Fig. 3 shows the A-A cross-sectional schematic diagram of the hub motor thermoelectric power supply system provided by the preferred embodiment of the utility model; Fig. 4 shows the schematic block diagram of the hub motor thermoelectric power supply system provided by the preferred embodiment of the utility model. As shown in the figure, a preferred embodiment of the present invention provides a hub motor thermoelectric power supply system 100, which includes a hub motor 1, a wheel 2, a parameter sensing component 3, a thermoelectric conversion element 4, a heat dissipation element 5 and An electronic device 6 .

The hub motor 1 includes a motor stator 11 and a motor rotor 12 . The motor stator 11 includes a stator shaft 111 connected to an electric vehicle body 200 along a stator axis E. As shown in FIG. The motor rotor 12 is rotatably connected to the motor stator 11 facing away from the axial direction E of the stator, and has a rotor back axial surface 121 facing away from the axial direction E of the stator. Since the types of the hub motor 1 are too numerous to enumerate, the hub motor 1 shown in FIGS. 1 to 3 is only a schematic diagram, and the detailed structure of the hub motor 1 can refer to a general existing hub motor.

The wheel 2 includes a hub 21 and a tire 22 . The hub 21 includes a rim 211 and a spoke 212 . The rim 211 has a rim outer ring surface 2111 and a rim inner ring surface 2112 opposite to the rim outer ring surface 2111 . The spokes 212 are integrally connected to the side of the rim 211 facing away from the axial direction E of the stator, and are provided with at least one cooling port 2121 for the thermoelectric conversion element. In addition, the spokes 212 and the inner ring surface 2112 of the rim define a rotor installation space S1 for accommodating the motor rotor 12 . Wherein, the motor rotor 12 is locked to the spoke 212 . The tire 22 is sheathed on the outer ring surface 2111 of the rim, and has an inner tire space S2 for accommodating a tire inner gas.

The parameter sensing component 3 is at least partially arranged in the tire inner space S2, and includes a tire pressure sensing element 31, a tire temperature sensing element 32, a wheel vibration sensing element 33, a parameter wireless transmission element 34 and a power storage unit. Element 35. In other embodiments, the tire pressure sensing element 31 , the tire temperature sensing element 32 , the wheel vibration sensing element 33 , the parameter wireless transmission element 34 and the power storage element 35 can be respectively disposed on the wheel 2 . Among them, the tire pressure sensing element 31 and the tire temperature sensing element 32 must be at least partially arranged in the tire inner space S2, the wheel vibration sensing element 33, the parameter wireless transmission element 34 and the electric storage element 35 must be arranged in the wheel 2, but not This is the limit.

The parameter wireless transmission element 34 is electrically connected to the tire pressure sensing element 31 , the tire temperature sensing element 32 and the wheel vibration sensing element 33 . Wherein, the parameter wireless transmission element 34 may be a WIFI transmission element, a Bluetooth transmission element, an NFC transmission element, a ZigBee transmission element or a UWB transmission element, but not limited thereto. The electric storage element 35 is electrically connected to the tire pressure sensing element 31, the tire temperature sensing element 32, the wheel vibration sensing element 33 and the parameter wireless transmission element 34, wherein the electric storage element 35 can be a nickel-cadmium battery or a nickel-hydrogen battery , sodium batteries, lithium batteries or storage capacitors, but not limited thereto.

The thermoelectric conversion element 4 is electrically connected to the tire pressure sensing element 31, the tire temperature sensing element 32, the wheel vibration sensing element 33, the parameter wireless transmission element 34 and the storage element 35, and includes a first thermoelectric conversion unit 41 and a second thermoelectric conversion part 42 opposite to the first thermoelectric conversion part 41 . The first thermoelectric conversion portion 41 faces away from the rotor back shaft surface 121 , and communicates with or is adjacent to the thermoelectric conversion element cooling port 2121 . The second thermoelectric conversion unit 42 is connected to the rotor back-shaft surface 121 . In this embodiment, the thermoelectric conversion element 4 is a thermoelectric chip. In other embodiments, the thermoelectric conversion element 4 may be a thermoelectric chip, but not limited thereto. By the way, thermoelectric chips are also called electrothermal chips or power generation chips.

The heat dissipation element 5 is thermally connected to the first thermoelectric conversion part 41 and at least partially protrudes from the thermoelectric conversion element cooling opening 2121 . In this embodiment, the heat dissipation element 5 is a heat dissipation fin, but it is not limited thereto in other embodiments. The electronic device 6 is communicatively connected to the parameter wireless transmission element 34 . Wherein, the electronic device 6 can be a car host, a mobile phone or a remote monitoring device of a car maintenance factory, but it is not limited to this in other embodiments.

When the electric vehicle is running, the in-wheel motor 1 is driven, so that the motor stator 11 and the motor rotor 12 rotate relatively. The motor rotor 12 generates heat energy due to the current flowing through the hub motor 1 . The second thermoelectric conversion part 42 of the thermoelectric conversion element 4 disposed on the rotor back-axis surface 121 of the motor rotor 12 will be heated by the heat energy to generate a temperature difference with the first thermoelectric conversion part 41, thereby causing the thermoelectric conversion element 4 to generate a temperature difference. Electric energy P1. Wherein, the heat dissipation element 5 continuously cools the first thermoelectric conversion part 41 to maintain a temperature difference between the first thermoelectric conversion part 41 and the second thermoelectric conversion part 42 .

The electric energy P1 generated by the thermoelectric conversion element 4 will be supplied to the tire pressure sensing element 31, tire temperature sensing element 32, wheel vibration sensing element 33, parameter wireless transmission element 34 and power storage element 35 of the parameter sensing component 3, and generate At least one wheel parameter D. Wherein, the wheel parameter D includes the gas pressure parameter D1 in the tire, the tire temperature parameter D2 and the vibration parameter D3. In addition, the electric storage element 35 can store the electric energy P1 transmitted by the thermoelectric conversion element 4, and supply the stored electric energy P2 to the tire pressure sensing element 31, the tire temperature sensing element 32, the wheel vibration sensing element 33 and the parameter wireless transmission element 34 .

The tire pressure sensing element 31 is used to sense the pressure of the air in the tire in the space S2 of the tire, and generate the tire air pressure parameter D1 of the wheel parameter D. The tire temperature sensing element 32 is used to sense the temperature of the tire 22 or the air inside the tire, and generate the tire temperature parameter D2 of the wheel parameter D. The wheel vibration sensing element 33 is used to sense the vibration degree of the wheel 2 and generate a vibration parameter D3 of the wheel parameter D. The parameter wireless transmission element 34 transmits the air pressure parameter D1 in the tire, the tire temperature parameter D2 and the vibration parameter D3 to the electronic device 6 .

When the electronic device 6 is a vehicle host, the driver can know the gas pressure parameter D1 in the tire, the tire temperature parameter D2 and the vibration parameter D3 through the electronic device 6 . Wherein, knowing the tire gas pressure parameter D1 can enable the driver to prevent the tire 22 from being difficult to control due to low tire gas pressure or tire 22 blowout due to too high tire gas pressure. Knowing the tire temperature parameter D2 can enable the driver to prevent tire blowout due to excessive temperature of the tire 22. Knowing the vibration parameter D3 can enable the driver to prevent the wheel 2 from being damaged due to abnormal locking or assembly of the wheel 2 by knowing the abnormal vibration of the wheel 2. issues affecting driving safety.

When the electronic device 6 is a mobile phone, the user can know the above wheel parameter D through the corresponding APP in the mobile phone. When the electronic device 6 is a remote monitoring device of a car maintenance factory, the user can estimate and remind the customer to suggest the date of returning to the factory for maintenance according to the above wheel parameter D.

To sum up, in the hub motor thermoelectric power supply system provided by the present invention, there is a thermoelectric conversion element disposed on the motor rotor of the hub motor. When the in-wheel motor is running, heat energy is generated, which causes a temperature difference between the first thermoelectric conversion part and the second thermoelectric conversion part of the thermoelectric conversion element, and then makes the thermoelectric conversion element generate electric energy. The thermoelectric conversion element will supply electric energy to the tire pressure sensing element, tire temperature sensing element, wheel vibration sensing element, parameter wireless transmission element and power storage element, so as to sense and transmit the gas pressure parameter, tire temperature parameter and vibration parameter in the tire to the electronic device.

Compared with the prior art, the hub motor thermoelectric power supply system provided by the utility model is to convert the first thermoelectric conversion unit and the second thermoelectric conversion unit by supplying the heat energy generated by the hub motor during operation to the second thermoelectric conversion unit. The action part generates a temperature difference, and then the thermoelectric conversion element generates electric energy. The thermoelectric conversion element supplies electric energy to the parameter sensing component, so that the parameter sensing component transmits the wheel parameters to the electronic device. In this way, the thermoelectric conversion element can continuously supply the electric energy of the parameter sensing component without replacing the battery, thus avoiding the need to go to the repair shop to replace the battery that supplies the electric energy of the tire pressure detector when the battery is dead in the prior art. , and it is also necessary to pay the additional cost of replacing the battery.

Of course, the utility model can also have other various embodiments, and those skilled in the art can make various corresponding changes and deformations according to the utility model without departing from the spirit and essence of the utility model, but These corresponding changes and deformations should all belong to the protection scope of the appended claims of the present utility model.

Claims (11)

1. A hub motor thermoelectric power supply system, characterized in that it comprises: Hub motor, including: a motor stator connected to an electric vehicle body; and a motor rotor that generates heat when the hub motor is driven, rotatably connected to the motor stator; a wheel sleeved on the motor rotor; a parameter sensing assembly for sensing at least one wheel parameter of the wheel, disposed on the wheel; and A thermoelectric conversion element is electrically connected to the parameter sensing component, and includes: a first thermoelectric conversion unit; and a second thermoelectric conversion part for absorbing the heat energy and generating a temperature difference with the first thermoelectric conversion part, thereby generating an electric energy so that the thermoelectric conversion element supplies the electric energy to the parameter sensing element, relative to the first thermoelectric conversion part A thermoelectric conversion unit is thermally connected to the motor rotor. 2. The hub motor thermoelectric power supply system according to claim 1, wherein the motor stator is connected to the electric vehicle body along a stator axis, and the motor rotor is rotatably connected to the stator axis The motor stator has a rotor back-axis surface facing away from the axial direction of the stator, and the second thermoelectric conversion part is connected to the rotor back-axis surface. 3 . The thermoelectric power supply system for in-wheel motors according to claim 2 , wherein the wheel defines a thermoelectric conversion element cooling port that communicates with the first thermoelectric conversion unit. 4 . 4. The hub motor thermoelectric power supply system according to claim 1, further comprising at least one heat dissipation element for cooling the first thermoelectric conversion part, the at least one heat dissipation element is thermally connected to the first thermoelectric conversion Action department. 5 . The hub motor thermoelectric power supply system according to claim 4 , wherein the at least one heat dissipation element is at least one heat dissipation fin. 6. The thermoelectric power supply system for in-wheel motors according to claim 1, wherein the wheel has an inner tire space for accommodating gas in the tire, the parameter sensing component includes a tire pressure sensing element, and the tire pressure sensing The element is at least partially arranged in the tire inner space, and the at least one wheel parameter includes a tire inner gas pressure parameter. 7. The in-wheel motor thermoelectric power supply system according to claim 1, wherein the parameter sensing component includes a tire temperature sensing element, the tire temperature sensing element is arranged on the wheel, and the at least one wheel parameter includes a Tire temperature parameters. 8. The in-wheel motor thermoelectric power supply system according to claim 1, wherein the parameter sensing component comprises a wheel vibration sensing element, the wheel vibration sensing element is arranged on the wheel, and the at least one wheel parameter The system contains a vibration parameter. 9. The thermoelectric power supply system for in-wheel motors according to claim 1, wherein the parameter sensing component comprises an electric storage element for storing the electric energy generated by the thermoelectric conversion element, and the electric storage element is electrically connected to in the thermoelectric conversion element. 10 . The thermoelectric power supply system for in-wheel motors according to claim 9 , wherein the power storage element is one of a battery and a capacitor. 11 . 11. The in-wheel motor thermoelectric power supply system according to claim 1, wherein the parameter sensing component includes a parameter wireless transmission element for transmitting the at least one wheel parameter, and the in-wheel motor thermoelectric power supply system further includes an electronic device, the parameter wireless transmission element is communicatively connected to the electronic device.