Range-extending power system
By setting fan blades on the motor rotor and connecting them to the engine crankshaft, an air circulation is formed, which solves the problem of the impact of the engine torsional vibration on the motor, reduces the motor temperature, improves the generator efficiency and reduces the cost, and realizes clean oil-to-electricity conversion.
Patent Information
- Application Number
- CN202422340589.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-09-25
AI Technical Summary
In existing devices, the impact damage caused by the engine crankshaft torsional vibration on the motor affects the reliable operation of the motor. The engine body temperature is transmitted to the motor rotor and stator, increasing the temperature of the motor rotor and stator, affecting the output electrical performance and increasing the risk of permanent magnet demagnetization.
An extended-range power system is adopted. By setting fan blades on the motor rotor and connecting it to the engine crankshaft, an air circulation is formed to take away the heat of the rotor and stator, lower the temperature, reduce heat loss, and improve the efficiency of the generator.
It effectively reduces the temperature of the motor rotor and stator, reduces heat loss, improves the efficiency of the generator, reduces the purchase cost of the motor, and achieves efficient oil-to-electricity conversion. The use of methanol as a renewable resource reduces costs and cleans emissions.
Smart Images
Figure CN223379010U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric motors, and in particular to a range-extending power system. Background Art
[0002] When the motor is working normally, it will generate stator copper loss, iron loss, additional loss and rotor loss. These losses will cause the motor housing to heat up, that is, temperature rise. Under ideal conditions, if the heat generated by the motor can be completely dissipated at any time, that is, the temperature rise of the motor is zero, as long as the mechanical strength of the motor can be guaranteed, the heat loss in the motor power generation process will be greatly reduced, and the power generation efficiency will be maximized. Under the same conditions, the heat dissipation performance of the motor determines the actual power used by the motor.
[0003] However, existing devices use a transmission method that directly connects the engine crankshaft to the generator rotor. This can cause the engine crankshaft's torsional vibration to impact and damage the motor, affecting its reliable operation. Furthermore, the engine body's temperature is transmitted through the crankshaft and engine block to the motor rotor and stator, increasing the motor's rotor and stator temperatures. This affects the motor's output electrical performance, reduces its temperature rise, and increases the risk of demagnetization of the motor's permanent magnets. Therefore, an extended-range power system is provided to address the issues raised in the aforementioned background technology. Utility Model Content
[0004] In order to make up for the above shortcomings, the present invention provides an extended-range power system, which aims to improve the impact damage of the engine crankshaft torsional vibration on the motor in the existing technology, affecting the reliable operation of the motor. At the same time, the temperature of the engine body is transmitted to the motor rotor and stator along the crankshaft and engine cylinder, which increases the rotor temperature and stator temperature of the motor, affects the output electrical performance of the motor, affects the temperature rise of the motor, and increases the risk of demagnetization of the motor permanent magnet.
[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an extended-range power system, comprising a motor body and an engine, the motor body comprising a motor rotor, a motor stator being provided on the outer side of the motor rotor, at least one fan blade being provided at each end of the motor rotor, the engine being located on one side of the motor body, and the motor rotor being connected to the crankshaft of the engine.
[0006] Furthermore, there are at least two fan blades, and at least two of the fan blades are arranged at intervals along the circumferential direction at the end of the motor rotor.
[0007] Furthermore, it also includes a mounting plate, at least two of the fan blades are integrally formed on the mounting plate, and the mounting plate is detachably mounted on the end of the motor rotor.
[0008] Furthermore, a first vent and a second vent are provided on the motor rotor, and air circulates between the first vent and the second vent through the fan blades.
[0009] Furthermore, the first vent is provided between the motor body and the engine.
[0010] Furthermore, the second vent is provided at an end of the motor rotor away from the engine.
[0011] Furthermore, at least one fan blade is provided at both ends of the motor rotor.
[0012] Furthermore, the motor rotor and the crankshaft are connected by fastening bolts.
[0013] The utility model has the following beneficial effects:
[0014] In this utility model, the rotor is first directly fixed to the engine crankshaft through the rotor fastening bolts, and then the generator stator is installed to complete the assembly of the motor. After the range extender is started by reverse dragging the generator, the range extender enters normal operating state. During the normal operation of the range extender, since the front and rear end faces of the motor rotor are provided with fan blades, the surrounding air can be disturbed to form a moving airflow. The airflow forms a circulating flow of air through the small holes in the front section of the rotor bracket and the small holes in the rear end face of the rotor. The circulating airflow continuously takes away the heat of the rotor and the heat of the stator, thereby reducing the temperature of the generator rotor. The generator with a rotor with built-in fan blade air cooling structure has obvious light weight and compact structure. There is no transmission efficiency loss between the engine and the generator, the temperature rise of the motor stator and rotor is low, and the motor procurement cost is low. Under the same power generation conditions, the range extender has high oil-to-electricity conversion efficiency. At the same time, methanol is a renewable resource with low usage cost and clean emissions, which can effectively achieve carbon neutrality. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a three-dimensional diagram of a range-extending power system proposed by the present utility model;
[0016] Figure 2 This is a schematic diagram of the internal structure of an extended-range power system proposed by the present utility model.
[0017] Legend:
[0018] 1. Engine; 2. Fastening bolts; 3. Motor rotor; 4. Motor stator; 5. Fan blades; 6. First vent; 7. Motor body; 8. Second vent. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0020] Reference Figure 1 and Figure 2 The present invention provides an embodiment of a range-extended power system, comprising a motor body 7 and an engine 1. The motor body 7 comprises a motor rotor 3. A motor stator 4 is disposed on the outer side of the motor rotor 3. Each end of the motor rotor 3 is provided with at least one fan blade 5. The engine 1 is located on one side of the motor body 7. The motor rotor 3 is connected to the crankshaft of the engine 1.
[0021] The main part of the motor body 7 is composed of an engine 1, a motor rotor 3, and a motor stator 4, wherein the motor rotor 3 is installed on the right side of the engine 1, and the motor stator 4 is installed on the right side of the engine 1. Since the front and rear ends of the motor rotor 3 are provided with fan blades 5, the surrounding air can be disturbed to form a moving airflow. The airflow forms a circulating flow of air through the small holes in the front section of the rotor bracket and the small holes in the rear end face of the rotor. The circulating airflow continuously takes away the heat of the rotor and the heat of the stator, thereby reducing the temperature of the generator rotor 3 and the temperature of the generator stator 4, directly reducing the heat loss of the rotor and the heat loss of the motor stator 4 winding, and improving the generator efficiency of the motor.
[0022] Reference Figure 1 and Figure 2 There are at least two fan blades 5, and at least two fan blades 5 are arranged at intervals along the circumferential direction at the end of the motor rotor 3. A mounting plate is also included. At least two fan blades 5 are integrally formed on the mounting plate. The mounting plate is removed and installed at the end of the motor rotor 3. A first vent 6 and a second vent 8 are provided on the motor rotor 3. Air circulates between the first vent 6 and the second vent 8 through the fan blades 5. The first vent 6 is provided between the motor body 7 and the engine 1, and the second vent 8 is provided at the end of the motor rotor 3 away from the engine 1. At least one fan blade 5 is provided at both ends of the motor rotor 3. The motor rotor 3 and the crankshaft are connected by fastening bolts 2; the motor rotor 3 is directly fixed to the crankshaft of the engine 1 with the rotor fastening bolts 2, and then the generator stator 4 is installed to complete the assembly of the motor.
[0023] Working principle: When using this device, first fix it directly to the crankshaft of the engine 1 through the rotor fastening bolts 2, and then install the generator stator 4 to complete the assembly of the motor. After the range extender is started by reverse dragging the generator, the range extender enters normal operation. During the normal operation of the range extender, since the front and rear end faces of the motor rotor 3 are equipped with fan blades 5, the surrounding air can be disturbed to form a moving airflow. The airflow forms a circulating flow of air through the small holes in the front section of the rotor bracket and the small holes on the rear end face of the rotor. The circulating airflow continuously takes away the heat of the rotor and the heat of the stator, thereby reducing the temperature of the generator rotor 3 and the temperature of the generator stator 4, directly reducing the heat loss of the rotor and the heat loss of the motor stator 4 winding, and improving the generator efficiency of the motor.
[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A range-extending power system comprising a motor body (7) and an engine (1), characterized in that: The motor body (7) includes a motor rotor (3), a motor stator (4) is provided on the outside of the motor rotor (3), and at least one fan blade (5) is provided at each end of the motor rotor (3). The engine (1) is located on one side of the motor body (7), and the motor rotor (3) is connected to the crankshaft of the engine (1).
2. The range-extended power system according to claim 1, characterized in that: There are at least two blades (5), and the at least two blades (5) are arranged at intervals along the circumferential direction at the end of the motor rotor (3).
3. The range-extended power system according to claim 2, characterized in that: It also includes a mounting plate, on which at least two of the fan blades (5) are integrally formed, and the mounting plate is detachably mounted on the end of the motor rotor (3).
4. The range-extended power system according to claim 2, characterized in that: The motor rotor (3) is provided with a first vent (6) and a second vent (8), and air circulates between the first vent (6) and the second vent (8) through the fan blades (5).
5. The range-extended power system according to claim 4, characterized in that: The first vent (6) is provided between the motor body (7) and the engine (1).
6. The range-extended power system according to claim 5, characterized in that: The second vent (8) is provided at the end of the motor rotor (3) away from the engine (1).
7. The range-extended power system according to claim 1, characterized in that: Both ends of the motor rotor (3) are provided with at least one fan blade (5).
8. The range-extended power system according to claim 1, characterized in that: The motor rotor (3) and the crankshaft are connected via fastening bolts (2).