Inertial energy storage range extending system

Abstract

The utility model provides an inertial energy storage range extending system, which comprises a brushless direct current motor, a brushless direct current motor and a controller, the brushless direct current motor controller is in control connection with the brushless direct current motor; a rotor of the three-phase brushless generator is connected with a hub of a driven wheel of the vehicle, and the rotating mechanical energy of the driven wheel is converted into electric energy; the battery module comprises a battery pack A and a battery pack B, and the battery pack A and the battery pack B are alternately and electrically connected with the brushless direct current motor controller and the three-phase brushless generator, supply power to the brushless direct current motor controller and store electric energy converted by the three-phase brushless generator; and the PC linked switch is electrically connected between the battery module and the brushless direct current motor controller and between the battery module and the three-phase brushless generator, and is used for realizing alternate electrical connection between the battery pack A and the brushless direct current motor controller and between the battery pack B and the three-phase brushless generator. According to the inertial energy storage range extending system, mechanical energy of the driven wheel of the vehicle is converted into electric energy to be recycled, and the endurance mileage of the vehicle is increased.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle range extender technology, specifically to an inertial energy storage range extender system. Background Technology

[0002] Electric bicycles, as a modern mode of transportation, are becoming increasingly popular in both urban and rural areas. Combining the convenience of traditional bicycles with the power assistance of electric vehicles, they offer advantages such as environmental friendliness, energy conservation, reduced traffic congestion, and improved travel efficiency, providing a new mode of transportation.

[0003] However, electric bicycles also have a significant drawback: limited range. The range of an electric bicycle is limited by battery capacity, generally between 50-100 kilometers, which may not meet the needs of users who require long rides or long-distance travel. Therefore, there is an urgent need for a solution to improve the range of electric bicycles. Utility Model Content

[0004] In order to overcome the defects existing in the prior art, the purpose of this utility model is to provide an inertial energy storage range extender system.

[0005] To achieve the above-mentioned objectives of this utility model, this utility model provides an inertial energy storage range extender system, comprising:

[0006] Brushless DC motors are used to drive the drive wheels of a vehicle.

[0007] A brushless DC motor controller is connected to the brushless DC motor control to control the brushless DC motor to rotate forward, reverse, or stop.

[0008] A three-phase brushless generator, whose rotor is connected to the hub of the driven wheel of a vehicle, is used to convert the mechanical energy of the driven wheel's rotation into electrical energy.

[0009] The battery module includes a battery pack A and a battery pack B, which are alternately electrically connected to a brushless DC motor controller and a three-phase brushless generator to supply power to the brushless DC motor controller and store the electrical energy converted by the three-phase brushless generator.

[0010] The PC linkage switch is electrically connected between the battery module and the brushless DC motor controller and the three-phase brushless generator, and is used to realize the alternating electrical connection between the A battery pack, the B battery pack and the brushless DC motor controller and the three-phase brushless generator.

[0011] This inertial energy storage range extender system increases the vehicle's driving range by converting the mechanical energy of the vehicle's driven wheels into electrical energy and then recovering it.

[0012] Optionally, a three-phase silicon rectifier bridge is provided, with its input terminal electrically connected to the output terminal of the three-phase brushless generator, to convert the three-phase AC power output by the three-phase brushless generator into DC power.

[0013] A filter capacitor, the input of which is connected to the output of the three-phase silicon rectifier bridge, filters the DC power output by the three-phase silicon rectifier bridge.

[0014] The DC-DC power conversion module has its input terminal electrically connected to the output terminal of the filter capacitor and its output terminal electrically connected to the PC linkage switch. It converts the DC voltage filtered by the capacitor into a stable DC voltage, which is then stored by the A battery pack or the B battery pack.

[0015] In this optional solution, the three-phase silicon rectifier bridge converts the three-phase AC power output from the three-phase brushless generator into DC power, which is then rectified and filtered by a filter capacitor to make the DC power output voltage more stable. The DC-DC power conversion module then converts the DC power to obtain the voltage and current suitable for the battery module to store.

[0016] Optionally, the DC-DC power conversion module includes:

[0017] The first DC-DC power converter has its input terminal electrically connected to the output terminal of the filter capacitor, and converts the DC voltage filtered by the capacitor into a stable DC voltage.

[0018] The DC-DC adjustable constant voltage and constant current boost module has its input terminal electrically connected to the output terminal of the first DC-DC power converter and its output terminal electrically connected to the PC linkage switch. It modulates and boosts the stable DC voltage output by the first DC-DC power converter and stores it by the A battery pack or the B battery pack.

[0019] Optionally, the PC linkage switch includes:

[0020] The first switch is used to electrically connect the three-phase brushless generator to battery pack A;

[0021] The second switch is used to electrically connect the three-phase brushless generator to the B battery pack;

[0022] The third switch is used to electrically connect battery pack A to the brushless DC motor controller;

[0023] The fourth switch is used to electrically connect the B battery pack to the brushless DC motor controller;

[0024] The first switch and the fourth switch are linked to open or close, and the second switch and the third switch are linked to open or close; the first switch and the second switch are not linked to open or close at the same time, and the third switch and the fourth switch are not linked to open or close at the same time.

[0025] The PC-connected switch in this optional solution has a simple structure and low production cost.

[0026] Optional, also includes:

[0027] A DC relay, whose coil ends are electrically connected to the positive and negative terminals of the battery module, is alternately electrically connected to the A battery pack and the B battery pack via the PC linkage switch, and its normally open contact is located on the connection line between the three-phase brushless generator and the three-phase silicon rectifier bridge.

[0028] The charging switch is electrically located on the line where the coil of the DC relay is electrically connected to the battery module.

[0029] When the vehicle is on a flat road or downhill, the charging switch is closed, and the normally open contact of the DC relay closes, recovering the electrical energy converted by the three-phase brushless generator. When the vehicle is on an uphill or high-resistance road, the charging switch is opened, and the normally open contact of the DC relay opens, preventing the recovery of electrical energy converted by the three-phase brushless generator. This optional solution effectively avoids energy waste due to magnetic resistance on uphill or high-resistance road sections.

[0030] Optionally, a second DC-DC power converter may also be included;

[0031] The second DC-DC power converter is electrically connected to the battery module and converts the voltage output by the battery module. The positive and negative terminals of the output of the second DC-DC power converter are electrically connected to the two ends of the coil of the DC relay.

[0032] Optional, also includes:

[0033] A first voltmeter is electrically connected to both ends of the A battery pack and is used to detect the charge of the A battery pack.

[0034] The second voltmeter is electrically connected to both ends of the B battery pack and is used to detect the charge of the B battery pack.

[0035] This optional solution allows you to view the real-time battery levels of battery packs A and B.

[0036] Optionally, it also includes a charger socket, which is electrically connected to the charging end of the battery module.

[0037] Optionally, the charger socket is inserted into one end of the charger, and the other end of the charger is electrically connected to an external power source. The charger is alternately electrically connected to the A battery pack and the B battery pack via the PC linkage switch to charge either the A battery pack or the B battery pack.

[0038] Optionally, a planetary gear is provided between the rotor and stator of the three-phase brushless generator. This optional solution increases the transmission ratio within the three-phase brushless generator, thereby improving power generation efficiency.

[0039] The beneficial effects of this utility model are:

[0040] The inertial energy storage range extender system proposed in this invention has a simple structure, low production cost, high energy recovery rate, and can effectively improve the driving range of vehicles.

[0041] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0042] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0043] Figure 1 This is a schematic diagram of the principle of this application;

[0044] Figure 2 This is a schematic diagram of the assembly arrangement on the vehicle according to Embodiment 1. Detailed Implementation

[0045] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0046] In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0047] Example 1

[0048] like Figure 1 and Figure 2 As shown, this utility model provides an inertial energy storage range extender system for two-wheeled vehicles, specifically including: a battery module, a PC linkage switch G, a brushless DC motor L, a brushless DC motor controller J, a three-phase brushless generator A, a three-phase silicon rectifier bridge C, a filter capacitor D, and a DC-DC power conversion module.

[0049] The battery module includes battery pack A H1 and battery pack B H2. Battery pack A H1 and battery pack B H2 are alternately electrically connected to the brushless DC motor controller J and the three-phase brushless generator A, supplying power to the brushless DC motor controller J and storing the electrical energy converted by the three-phase brushless generator A.

[0050] The PC linkage switch G is electrically connected between the battery module and the brushless DC motor controller J and the three-phase brushless generator A. It is used to realize the alternating electrical connection between battery pack A H1, battery pack B H2 and the brushless DC motor controller J and the three-phase brushless generator A. This electrical connection can be direct or indirect.

[0051] In this embodiment, the PC linkage switch G includes: a first switch g1, a second switch g2, a third switch g3, and a fourth switch g4. Specifically, the first switch g1 is used to directly or indirectly connect the three-phase brushless generator A to battery pack H1 (A); the second switch g2 is used to directly or indirectly connect the three-phase brushless generator A to battery pack H2 (B); the third switch g3 is used to electrically connect battery pack H1 (A) to brushless DC motor controller J; and the fourth switch g4 is used to electrically connect battery pack H2 (B) to brushless DC motor controller J. The first switch g1 and the fourth switch g4 are linked to open or close, and the second switch g2 and the third switch g3 are linked to open or close. The first switch g1 and the second switch g2 cannot be closed or opened simultaneously, and the third switch g3 and the fourth switch g4 cannot be closed or opened simultaneously.

[0052] In this embodiment, the first switch g1 and the fourth switch g4 can be set to position one, and the second switch g2 and the third switch g3 can be set to position two. This can be achieved by setting the toggle switches. When the PC linkage switch G is set to position one, the first switch g1 and the fourth switch g4 are closed, and the second switch g2 and the third switch g3 are open. Battery pack H1 is electrically connected to the three-phase brushless generator A. In this example, an indirect electrical connection is used. The electrical energy converted by the three-phase brushless generator A is processed sequentially by the three-phase silicon rectifier bridge C, the filter capacitor D, and the DC-DC power conversion module before being stored in battery pack H1. Battery pack H2 is electrically connected to the brushless DC motor controller J and supplies power to the brushless DC motor controller J. When the PC linkage switch G is switched to position two, the first switch g1 and the fourth switch g4 are open, and the second switch g2 and the third switch g3 are closed. Battery pack B H2 is electrically connected to the three-phase brushless generator A. In this example, an indirect electrical connection is used. The electrical energy converted by the three-phase brushless generator A is processed sequentially by the three-phase silicon rectifier bridge C, the filter capacitor D, and the DC-DC power conversion module before being stored in battery pack B H2. Battery pack A H1 is electrically connected to the brushless DC motor controller J, supplying power to the brushless DC motor controller J.

[0053] The brushless DC motor controller J is connected to the brushless DC motor L and controls the brushless DC motor L to rotate forward, reverse, or stop. The brushless DC motor L interacts with the vehicle's drive wheel to drive its rotation. When the drive wheel rotates, it drives the driven wheel to rotate. In this embodiment, the drive wheel is, but is not limited to, the rear wheel, and the driven wheel is, but is not limited to, the front wheel. In this embodiment, the brushless DC motor controller J is preferably, but not limited to, set to a power of 350W, and its operating voltage is preferably, but not limited to, DC48V.

[0054] The rotor of the three-phase brushless generator A is connected to the hub of the driven wheel of the vehicle. When the driven wheel rotates, the three-phase brushless generator A converts the mechanical energy of the driven wheel into electrical energy. In this embodiment, the three-phase brushless generator A consists of a hub generator NS high-strength magnet block combined to form an outer rotor rotating magnet. The stator winding of the three-phase brushless generator A is a 6-pole three-phase winding, and its output terminal (U,V,W) voltage is a three-phase AC voltage. Mechanical energy is provided between the rotor and the stator of the three-phase brushless generator A. The planetary gear rotation is formed by the three-phase brushless generator A assembly housing. The rotation ratio of the outer rotor hub to the inner stator winding is preferably, but not limited to, 1:4.2.

[0055] The input terminal of the three-phase silicon rectifier bridge C is electrically connected to the output terminal of the three-phase brushless generator A, converting the three-phase AC power output by the three-phase brushless generator A into DC power.

[0056] The input terminal of the filter capacitor D is connected to the output terminal of the three-phase silicon rectifier bridge C to filter the DC power output from the three-phase silicon rectifier bridge C. In this embodiment, the filter capacitor D includes two electrolytic capacitors connected in parallel. The parallel electrolytic capacitors rectify and filter the input DC power supply, resulting in a more stable output voltage for the DC power supply.

[0057] The input terminal of the DC-DC power conversion module is electrically connected to the output terminal of the filter capacitor D, and its output terminal is electrically connected to the PC linkage switch G. It converts the DC voltage after capacitor filtering into a stable DC voltage, which is then stored by battery pack A H1 or battery pack B H2 through the action of PC linkage switch G.

[0058] In this embodiment, the DC-DC power conversion module includes a first DC-DC power converter E and a DC-DC adjustable constant voltage and constant current boost module F. The input terminal of the first DC-DC power converter E is electrically connected to the output terminal of the filter capacitor D, converting the DC voltage filtered by the capacitor into a stable DC voltage. The input terminal of the DC-DC adjustable constant voltage and constant current boost module F is electrically connected to the output terminal of the first DC-DC power converter E, and the output terminal of the DC-DC adjustable constant voltage and constant current boost module F is electrically connected to the PC linkage switch G, modulating and boosting the stable DC voltage output by the first DC-DC power converter E, and storing it in battery pack A H1 or battery pack B H2. In this embodiment, the input voltage of the first DC-DC power converter varies in the range of DC20V-80V, and its DC voltage output terminal is kept in a regulated state of DC12V; the input stable voltage of the DC-DC adjustable constant voltage and constant current boost module F is DC12V, and the output voltage can be modulated to DC56V after being boosted by the adjustable boost module. The current modulation can be adjusted from 0.8A to 3A output current according to the size of the charging load.

[0059] In this embodiment, a power detector N can be electrically installed before the input terminal of the DC-DC power conversion module to detect the power output of the three-phase brushless generator A.

[0060] Before implementing this embodiment, the battery module needs to be charged. This can be achieved by setting a charger socket I at the charging end of the battery module. In this embodiment, charger socket I is inserted into one end of the charger, and the other end of the charger is electrically connected to an external power source. The charger is alternately electrically connected to battery pack A H1 and battery pack B H2 via a PC-linked switch G to charge either battery pack A H1 or battery pack B H2. In this embodiment, the battery capacities of battery pack A H1 and battery pack B H2 are equal and not limited to 12AH / 48V.

[0061] In this embodiment, a first voltmeter P can be electrically installed across the two ends of battery pack A H1 to detect the charge level of battery pack A H1, and a second voltmeter Q can be electrically installed across the two ends of battery pack B H2 to detect the charge level of battery pack B H2. To facilitate the driver's understanding of the charge levels of battery packs A H1 and B H2, the charge level displays for both the first voltmeter P and the second voltmeter Q can be located within the vehicle's dashboard or displayed directly on the display screen S.

[0062] Control Principle: Battery pack A (H1) or battery pack B (H2) is charged by an external power source. During operation, battery pack A (H1) or battery pack B (H2) supplies power to the brushless DC motor controller J. The brushless DC motor controller J controls the brushless DC motor L to rotate forward, reverse, or stop. During the rotation of the brushless DC motor L, the vehicle's drive wheel rotates, thereby moving the vehicle and driving the driven wheel to rotate. When the driven wheel rotates, it synchronously drives the rotor of the three-phase brushless generator A to rotate. The three-phase brushless generator A converts the mechanical energy of the driven wheel rotation into electrical energy, which is then stored in battery pack B (H2) or battery pack A (H1) after being processed sequentially by the three-phase silicon rectifier bridge C, filter capacitor D, first DC-DC power converter E, and DC-DC adjustable constant voltage and constant current boost module F.

[0063] During operation, if battery pack A (H1) is currently powering the brushless DC motor controller J while battery pack B (H2) is storing electricity, then when battery pack A (H1) runs low on power, the PC-linked switch G can be toggled to switch the power supply to battery pack B (H2) while battery pack A (H1) stores electricity. The reverse is also true. When both battery pack A (H1) and battery pack B (H2) are low on power, they can be charged using an external power source.

[0064] In this embodiment, the PC-linked switch G can be controlled manually or automatically by the system. In manual control, the user determines whether a switch position needs to be changed; if so, the user manually moves the PC-linked switch G to the desired position. In automatic system control, the signal input terminal of the vehicle controller (not shown) is electrically connected to the signal output terminals of the first voltmeter P and the second voltmeter Q. The control signal output terminal of the vehicle controller is electrically connected to the control terminal of the PC-linked switch G. In this case, the PC-linked switch G can be an electromagnet switch group or a relay. The vehicle controller receives the power signal of battery pack A H1 collected by the first voltmeter P and the power signal of battery pack B H2 collected by the second voltmeter Q. It determines whether the power signal of battery pack A H1 or battery pack B H2 is lower than a set power threshold. If so, the vehicle controller controls the PC-linked switch G to change position. If both the power signals of battery pack A H1 and battery pack B H2 are lower than the power threshold, the system alerts the user that the battery modules need charging.

[0065] In this embodiment, the first DC-DC power converter and the second DC-DC power converter preferably, but not limited to, use MDK POWER DC buck regulator, and the DC-DC adjustable constant voltage and constant current boost module preferably, but not limited to, uses DIY / DC-DC boost power supply.

[0066] Example 2

[0067] To avoid wasting energy due to magnetic reluctance on uphill or high-resistance road sections, this application also provides a second embodiment, which adds a DC relay, a charging switch R, and a second DC-DC power converter K to the first embodiment.

[0068] In this embodiment, the second DC-DC power converter K is electrically connected to the battery module and alternately connected to battery pack A (H1) and battery pack B (H2) via a PC-linked switch G. The input voltage is supplied by either battery pack A (H1) or battery pack B (H2), and the converter transforms and outputs the voltage. The positive and negative terminals of the output of the second DC-DC power converter K are electrically connected to the coil ends of a DC relay. The normally open contact of the DC relay is located on the connection line between the three-phase brushless generator A and the three-phase silicon rectifier bridge C. The charging switch R is electrically located on the connection line between the DC relay coil and the battery module. In this embodiment, the second DC-DC power converter K outputs a DC 12V voltage, which is regulated to DC 12V to provide power for the DC relay. The charging switch R controls the opening and closing of the DC relay.

[0069] When the vehicle is on a flat road, downhill, or other normal road section, the charging switch R is closed, the normally open contact of the DC relay closes, and the electrical energy converted by the three-phase brushless generator A is recovered. When the vehicle is on an uphill or high-resistance road section, the charging switch R is opened, the normally open contact of the DC relay opens, and the electrical energy converted by the three-phase brushless generator A is not recovered. In this embodiment, the charging switch R can be a manual switch or automatically controlled by the system.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0071] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An inertial energy storage range extender system, characterized in that, include: Brushless DC motors are used to drive the drive wheels of a vehicle. A brushless DC motor controller is connected to the brushless DC motor control to control the brushless DC motor to rotate forward, reverse, or stop. A three-phase brushless generator, whose rotor is connected to the hub of the driven wheel of a vehicle, is used to convert the mechanical energy of the driven wheel's rotation into electrical energy. The battery module includes a battery pack A and a battery pack B, which are alternately electrically connected to a brushless DC motor controller and a three-phase brushless generator to supply power to the brushless DC motor controller and store the electrical energy converted by the three-phase brushless generator. The PC linkage switch is electrically connected between the battery module and the brushless DC motor controller and the three-phase brushless generator, and is used to realize the alternating electrical connection between the A battery pack, the B battery pack and the brushless DC motor controller and the three-phase brushless generator.

2. The inertial energy storage range extender system according to claim 1, characterized in that, Also includes: The input terminal of the three-phase silicon rectifier bridge is electrically connected to the output terminal of the three-phase brushless generator, converting the three-phase AC power output by the three-phase brushless generator into DC power. A filter capacitor, the input of which is connected to the output of the three-phase silicon rectifier bridge, filters the DC power output by the three-phase silicon rectifier bridge. The DC-DC power conversion module has its input terminal electrically connected to the output terminal of the filter capacitor and its output terminal electrically connected to the PC linkage switch. It converts the DC voltage filtered by the capacitor into a stable DC voltage, which is then stored by the A battery pack or the B battery pack.

3. The inertial energy storage range extender system according to claim 2, characterized in that, The DC-DC power conversion module includes: The first DC-DC power converter has its input terminal electrically connected to the output terminal of the filter capacitor, and converts the DC voltage filtered by the capacitor into a stable DC voltage. The DC-DC adjustable constant voltage and constant current boost module has its input terminal electrically connected to the output terminal of the first DC-DC power converter and its output terminal electrically connected to the PC linkage switch. It modulates and boosts the stable DC voltage output by the first DC-DC power converter and stores it by the A battery pack or the B battery pack.

4. The inertial energy storage range extender system according to claim 1, characterized in that, The PC linkage switch includes: The first switch is used to electrically connect the three-phase brushless generator to battery pack A; The second switch is used to electrically connect the three-phase brushless generator to the B battery pack; The third switch is used to electrically connect battery pack A to the brushless DC motor controller; The fourth switch is used to electrically connect the B battery pack to the brushless DC motor controller; The first switch and the fourth switch are linked to open or close, and the second switch and the third switch are linked to open or close; the first switch and the second switch are not linked to open or close at the same time, and the third switch and the fourth switch are not linked to open or close at the same time.

5. The inertial energy storage range extender system according to claim 2, characterized in that, Also includes: A DC relay, whose coil ends are electrically connected to the positive and negative terminals of the battery module, is alternately electrically connected to the A battery pack and the B battery pack via the PC linkage switch, and its normally open contact is located on the connection line between the three-phase brushless generator and the three-phase silicon rectifier bridge. The charging switch is electrically located on the line where the coil of the DC relay is electrically connected to the battery module.

6. The inertial energy storage range extender system according to claim 5, characterized in that, It also includes a second DC-DC power converter; The second DC-DC power converter is electrically connected to the battery module and converts the voltage output by the battery module. The positive and negative terminals of the output of the second DC-DC power converter are electrically connected to the two ends of the coil of the DC relay.

7. The inertial energy storage range extender system according to claim 1, characterized in that, Also includes: A first voltmeter is electrically connected to both ends of the A battery pack and is used to detect the charge of the A battery pack. The second voltmeter is electrically connected to both ends of the B battery pack and is used to detect the charge of the B battery pack.

8. The inertial energy storage range extender system according to claim 1, characterized in that, It also includes a charger socket, which is electrically connected to the charging end of the battery module.

9. The inertial energy storage range extender system according to claim 8, characterized in that, The charger plug is inserted into one end of the charger, and the other end of the charger is electrically connected to an external power source. The charger is alternately electrically connected to battery pack A and battery pack B via the PC linkage switch to charge battery pack A or battery pack B.

10. The inertial energy storage range extender system according to claim 1, characterized in that, Planetary gears are installed between the rotor and stator of the three-phase brushless generator.

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