System for generating power by using waste heat of driving motor

Abstract

The utility model relates to a system for generating power by using waste heat of a driving motor, which belongs to the field of heat collection and utilization of new energy automobiles, and is characterized in that an output end of a thermoelectric power generation module is connected with a boost control module through a first wire harness, and voltage generated by the thermoelectric power generation module by using temperature difference is output to an input end of the boost control module; after the structure is adopted, the electric vehicle control system has the advantages that the motor controller is adopted to detect the motor temperature of the driving motor, the temperature of the driving motor rises, the temperature of the driving motor rises, and the motor controller is connected with the whole vehicle control unit through a communication wire harness. The voltage generated by the temperature difference power generation module through the temperature difference is output to the input end of the boost control module, the electric quantity generated through the temperature difference is stored in a low-voltage storage battery, the electric quantity of a battery pack consumed by low-voltage electric devices of the whole vehicle is saved, the effects of reducing energy consumption and increasing the endurance mileage are achieved, useless energy is fully utilized for reutilization, and the cost is reduced. The energy utilization rate is improved, and the endurance mileage is increased.

Description

Technical Field

[0001] The utility model relates to the field of heat collection and utilization of new energy vehicles, and specifically refers to a system for generating electricity by utilizing waste heat from a driving motor. Background Art

[0002] With the development of science and technology, new energy vehicles are gradually increasing their requirements for the utilization rate of various energy consumption of the whole vehicle. Increasing the utilization rate of various energy consumption can effectively improve the energy utilization rate of the whole vehicle and increase the driving range. For electric vehicle parts, the drive motor is very likely to generate a lot of heat when running at high speed for a long time. At present, the practical utilization rate of motor heat is extremely low, resulting in energy waste. Utility Model Content

[0003] The utility model aims to solve the above-mentioned technical problems and provide a system for improving the energy utilization rate of the whole vehicle, reducing energy consumption, increasing cruising range, and utilizing the waste heat of the drive motor to generate electricity.

[0004] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0005] A system for generating electricity using waste heat from a drive motor, comprising a vehicle control unit, a motor controller, a drive motor, a boost control module, a temperature difference power generation module, a DC-DC module, a low-voltage battery and a heat dissipation channel;

[0006] The output end of the temperature difference power generation module is connected to the boost control module through a first wiring harness, and the voltage generated by the temperature difference power generation module using the temperature difference is output to the input end of the boost control module;

[0007] The boost control module and the DC-DC module are respectively connected to the low-voltage battery through the first wiring harness, and the generated electricity is output to the low-voltage battery for electricity storage;

[0008] The motor controller and the vehicle control unit are connected via a communication harness, and the vehicle control unit is respectively connected to the DC-DC module and the boost control module via the communication harness;

[0009] One side of the temperature difference power generation module is in contact with the driving motor to absorb heat, and the other side of the temperature difference power generation module is in contact with the heat dissipation water channel to generate a temperature difference.

[0010] Preferably, the temperature difference power generation module and the motor stator of the drive motor are in contact with each other and heat dissipating silicone grease is applied between them.

[0011] Preferably, the motor controller is connected to the drive motor via a first wiring harness.

[0012] Preferably, the vehicle control unit is bolted and installed in the vehicle compartment.

[0013] Preferably, the motor controller drives the drive motor to operate, detects the operating status and motor temperature, and communicates with the vehicle control unit.

[0014] After adopting the above structure, the utility model has the following advantages:

[0015] The utility model adopts a motor controller to detect the motor temperature of the driving motor. When the temperature of the driving motor rises, the voltage generated by the temperature difference of the temperature difference power generation module is output to the input end of the boost control module, so that the electricity generated by the temperature difference is stored in the low-voltage battery, saving the battery pack power consumed by the low-voltage electrical components of the whole vehicle, achieving the effect of reducing energy consumption and increasing the cruising range, making full use of useless energy for reuse, improving energy utilization and increasing the cruising range.

[0016] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a connection schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the installation of the temperature difference power generation module of the utility model.

[0020] As shown in the figure: 1. Vehicle control unit; 2. Motor controller; 3. Drive motor; 4. Boost control module; 5. Temperature difference power generation module; 6. DC-DC module; 7. Low-voltage battery; 8. Communication wiring harness; 9. First wiring harness; 10. Cooling water channel; 11. Motor rotor; 12. Motor stator. DETAILED DESCRIPTION

[0021] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0022] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] The utility model is further described in detail below in conjunction with the full text.

[0024] Combined with Figure 1 and Figure 2 ,

[0025] A system for generating electricity by utilizing waste heat from a driving motor, comprising a vehicle control unit 1, a motor controller 2, a driving motor 3, a boost control module 4, a temperature difference power generation module 5, a DC-DC module 6, a low-voltage battery 7 and a heat dissipation channel 10;

[0026] The output end of the temperature difference power generation module 5 is connected to the boost control module 4 through the first wiring harness 9, and the voltage generated by the temperature difference of the temperature difference power generation module 5 is output to the input end of the boost control module 4; specifically, the temperature difference power generation technology can directly convert thermal energy into electrical energy, and at the same time has the advantages of no pollution, no noise, compact structure, and long life. It is a green, environmentally friendly and energy-saving technology. The power generation power of the thermoelectric power generation sheet is generally between 5-25W, and the thickness is generally between 3-4mm. The output power and power generation efficiency are related to the temperature difference between the cold and hot ends of the power generation sheet. Within the allowable use range of the thermoelectric power generation sheet, the greater the temperature difference, the stronger the power generation capacity.

[0027] The boost control module 4 and the DC-DC module 6 are respectively connected to the low-voltage battery 7 through the first wiring harness 9, and the generated electricity is output to the low-voltage battery 7 for electricity storage;

[0028] The motor controller 2 and the vehicle control unit 1 are connected via a communication harness 8, and the vehicle control unit 1 is respectively connected to the DC-DC module 6 and the boost control module 4 via the communication harness 8;

[0029] One side of the thermoelectric power generation module 5 is in contact with the driving motor 3 to absorb heat, and the other side of the thermoelectric power generation module 5 is in contact with the heat dissipation channel 10 to generate a temperature difference.

[0030] The temperature difference power generation module 5 and the motor stator 12 of the driving motor 3 are attached to each other and heat dissipating silicone grease is applied between them.

[0031] The motor controller 2 is connected to the drive motor 3 via a first wiring harness 9 .

[0032] The vehicle control unit 1 is bolted into the vehicle compartment.

[0033] The motor controller 2 drives the drive motor 3 to operate, detects the operating status and motor temperature, and communicates with the vehicle control unit 1 .

[0034] The vehicle control unit 1 is installed inside the vehicle compartment to detect the vehicle status, communicate with the vehicle components, and is used to control the working status of the boost control module 4 and the DC-DC module 6;

[0035] The motor controller 2 is used to control the operation of the drive motor 3, detect the operating status and motor temperature, and communicate with the vehicle control unit 1;

[0036] The driving motor 3 outputs a running torque to drive the vehicle. Due to the existence of driving resistance, a large amount of heat source is generated during the operation of the driving motor 3, which provides a heat source for the thermoelectric power generation module 5;

[0037] The boost control module 4 is mainly used to boost the output voltage of the temperature difference power generation module 5, communicate with the vehicle control unit 1, and match the low-voltage power demand of the vehicle;

[0038] The temperature difference power generation module 5 uses the heat generated by the drive motor 3 to generate electricity for the operation of the low-voltage electrical components of the vehicle;

[0039] The DC-DC module 6 is mainly used to convert the battery pack voltage of the vehicle and reduce the voltage for low-voltage electrical components of the vehicle;

[0040] The low-voltage battery 7 is used to store the generated electricity and provide power for the low-voltage electrical components of the vehicle;

[0041] When the utility model is implemented, Figure 2 As shown, the structure diagram of the temperature difference power generation module 5 and the drive motor 3, the drive motor 3 includes a motor stator 12 and a motor rotor 11 rotating in the motor stator 12,

[0042] One end of the thermoelectric power generation module 5 is attached to the motor stator 12, and heat dissipation silicone grease is applied in the middle to facilitate heat conduction. The heat generated by the rotation of the motor rotor 11 and the motor stator 12 is transferred to one end of the thermoelectric power generation module 5. The other end of the thermoelectric power generation module 5 is attached to the heat dissipation water channel 10. The temperature difference formed by the cooling water and the heat generated by the motor acts on the two ends of the thermoelectric power generation module 5, generating a temperature difference. The thermoelectric power generation module 5 works to form a stable output voltage.

[0043] The output end of the temperature difference power generation module 5 is connected to the boost control module 4 through the first wiring harness 9, and the voltage generated by the temperature difference power generation module 5 using the temperature difference is output to the input end of the boost control module 4 as the input of the boost control module 4;

[0044] The boost control module 4 and the DC-DC module 6 are connected to the low-voltage battery 7 through the first wiring harness 9, and the generated electricity is output to the low-voltage battery 7 for electricity storage, which is convenient for the use of the voltage electrical components of the whole vehicle;

[0045] The vehicle control unit 1, the motor controller 2, the DC-DC module 6 and the boost control module 4 are connected via a communication harness 8 to facilitate data exchange and control between components.

[0046] The specific workflow is as follows:

[0047] 1. The motor controller 2 detects the motor temperature of the drive motor 3 and transmits the real-time temperature of the drive motor 3 to the vehicle control unit 1 through the communication harness 8;

[0048] 2. When the temperature of the drive motor 3 rises, the temperature of one end of the thermoelectric power generation module 5 close to the drive motor 3 will also rise, forming a temperature difference with the other end. Due to the material characteristics of the thermoelectric power generation module 5, electrons will move in the closed loop, forming a voltage difference output to the boost control module 4;

[0049] 3. The vehicle control unit 1 sends instructions to the DC-DC module 6 and the boost control module 4 on their respective working states according to the collected temperature of the drive motor 3, combined with the temperature difference and the state;

[0050] 4. Finally, the electricity generated by the temperature difference is stored in the low-voltage battery 7, saving the battery pack power consumed by the low-voltage electrical components of the whole vehicle, thereby achieving the effect of reducing energy consumption and increasing the cruising range.

[0051] The above describes the utility model and its implementation methods, which is not restrictive. What is shown in the full text is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. A system for generating electricity using waste heat from a drive motor, characterized in that: It comprises a vehicle control unit (1), a motor controller (2), a drive motor (3), a boost control module (4), a temperature difference power generation module (5), a DC-DC module (6), a low-voltage battery (7) and a heat dissipation channel (10); The output end of the temperature difference power generation module (5) is connected to the boost control module (4) via a first wiring harness (9), and the voltage generated by the temperature difference power generation module (5) using the temperature difference is output to the input end of the boost control module (4); The boost control module (4) and the DC-DC module (6) are respectively connected to the low-voltage battery (7) via a first wiring harness (9), and the generated electricity is output to the low-voltage battery (7) for electricity storage; The motor controller (2) and the vehicle control unit (1) are connected via a communication harness (8), and the vehicle control unit (1) is respectively connected to the DC-DC module (6) and the boost control module (4) via the communication harness (8); One side of the temperature difference power generation module (5) is in contact with the drive motor (3) to absorb heat, and the other side of the temperature difference power generation module (5) is in contact with the heat dissipation channel (10) to generate a temperature difference.

2. According to claim 1, a system for generating electricity using waste heat from a drive motor is characterized in that: The temperature difference power generation module (5) and the motor stator (12) of the drive motor (3) are fitted together and heat dissipation silicone grease is applied between them.

3. The system for generating electricity by utilizing waste heat from a drive motor according to claim 1, characterized in that: The motor controller (2) is connected to the drive motor (3) via a first wiring harness (9).

4. The system for generating electricity using waste heat from a drive motor according to claim 1, characterized in that: The vehicle control unit (1) is bolted and installed in the vehicle compartment.

5. The system for generating electricity by utilizing waste heat from a drive motor according to claim 1, characterized in that: The motor controller (2) drives the drive motor (3) to operate, detects the operating state and the motor temperature, and communicates with the vehicle control unit (1).

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